Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (200 commits)
  [SCSI] usbstorage: use last_sector_bug flag universally
  [SCSI] libsas: abstract STP task status into a function
  [SCSI] ultrastor: clean up inline asm warnings
  [SCSI] aic7xxx: fix firmware build
  [SCSI] aacraid: fib context lock for management ioctls
  [SCSI] ch: remove forward declarations
  [SCSI] ch: fix device minor number management bug
  [SCSI] ch: handle class_device_create failure properly
  [SCSI] NCR5380: fix section mismatch
  [SCSI] sg: fix /proc/scsi/sg/devices when no SCSI devices
  [SCSI] IB/iSER: add logical unit reset support
  [SCSI] don't use __GFP_DMA for sense buffers if not required
  [SCSI] use dynamically allocated sense buffer
  [SCSI] scsi.h: add macro for enclosure bit of inquiry data
  [SCSI] sd: add fix for devices with last sector access problems
  [SCSI] fix pcmcia compile problem
  [SCSI] aacraid: add Voodoo Lite class of cards.
  [SCSI] aacraid: add new driver features flags
  [SCSI] qla2xxx: Update version number to 8.02.00-k7.
  [SCSI] qla2xxx: Issue correct MBC_INITIALIZE_FIRMWARE command.
  ...

155 files changed, 9359 insertions, 8524 deletions

diff --git a/drivers/scsi/.gitignore b/drivers/scsi/.gitignore
index b385af314356..c89ae9a04399 100644
--- a/drivers/scsi/.gitignore
+++ b/drivers/scsi/.gitignore
@@ -1,3 +1 @@
 53c700_d.h
-53c7xx_d.h
-53c7xx_u.h
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index afb262b4be15..1c244832c6c8 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -2010,6 +2010,7 @@ static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id
         }
 
         pci_set_master(pdev);
+        pci_try_set_mwi(pdev);
 
         if (pci_set_dma_mask(pdev, DMA_64BIT_MASK)
             || pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c
index 71ff3fbfce12..f4c4fe90240a 100644
--- a/drivers/scsi/53c700.c
+++ b/drivers/scsi/53c700.c
@@ -608,7 +608,8 @@ NCR_700_scsi_done(struct NCR_700_Host_Parameters *hostdata,
                         scsi_print_sense("53c700", SCp);
 
 #endif
-                        dma_unmap_single(hostdata->dev, slot->dma_handle, sizeof(SCp->sense_buffer), DMA_FROM_DEVICE);
+                        dma_unmap_single(hostdata->dev, slot->dma_handle,
+                                         SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
                         /* restore the old result if the request sense was
                          * successful */
                         if (result == 0)
@@ -1010,7 +1011,7 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp,
                                 cmnd[1] = (SCp->device->lun & 0x7) << 5;
                                 cmnd[2] = 0;
                                 cmnd[3] = 0;
-                                cmnd[4] = sizeof(SCp->sense_buffer);
+                                cmnd[4] = SCSI_SENSE_BUFFERSIZE;
                                 cmnd[5] = 0;
                                 /* Here's a quiet hack: the
                                  * REQUEST_SENSE command is six bytes,
@@ -1024,14 +1025,14 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp,
                                 SCp->cmd_len = 6; /* command length for
                                                    * REQUEST_SENSE */
                                 slot->pCmd = dma_map_single(hostdata->dev, cmnd, MAX_COMMAND_SIZE, DMA_TO_DEVICE);
-                                slot->dma_handle = dma_map_single(hostdata->dev, SCp->sense_buffer, sizeof(SCp->sense_buffer), DMA_FROM_DEVICE);
-                                slot->SG[0].ins = bS_to_host(SCRIPT_MOVE_DATA_IN | sizeof(SCp->sense_buffer));
+                                slot->dma_handle = dma_map_single(hostdata->dev, SCp->sense_buffer, SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
+                                slot->SG[0].ins = bS_to_host(SCRIPT_MOVE_DATA_IN | SCSI_SENSE_BUFFERSIZE);
                                 slot->SG[0].pAddr = bS_to_host(slot->dma_handle);
                                 slot->SG[1].ins = bS_to_host(SCRIPT_RETURN);
                                 slot->SG[1].pAddr = 0;
                                 slot->resume_offset = hostdata->pScript;
                                 dma_cache_sync(hostdata->dev, slot->SG, sizeof(slot->SG[0])*2, DMA_TO_DEVICE);
-                                dma_cache_sync(hostdata->dev, SCp->sense_buffer, sizeof(SCp->sense_buffer), DMA_FROM_DEVICE);
+                                dma_cache_sync(hostdata->dev, SCp->sense_buffer, SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
 
                                 /* queue the command for reissue */
                                 slot->state = NCR_700_SLOT_QUEUED;
diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c
index 49e1ffa4b2ff..ead47c143ce0 100644
--- a/drivers/scsi/BusLogic.c
+++ b/drivers/scsi/BusLogic.c
@@ -2947,7 +2947,7 @@ static int BusLogic_QueueCommand(struct scsi_cmnd *Command, void (*CompletionRou
                 }
         }
         memcpy(CCB->CDB, CDB, CDB_Length);
-        CCB->SenseDataLength = sizeof(Command->sense_buffer);
+        CCB->SenseDataLength = SCSI_SENSE_BUFFERSIZE;
         CCB->SenseDataPointer = pci_map_single(HostAdapter->PCI_Device, Command->sense_buffer, CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
         CCB->Command = Command;
         Command->scsi_done = CompletionRoutine;
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 184c7ae78519..3e161cd66463 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -341,7 +341,7 @@ config ISCSI_TCP
          The userspace component needed to initialize the driver, documentation,
          and sample configuration files can be found here:
 
-         http://linux-iscsi.sf.net
+         http://open-iscsi.org
 
 config SGIWD93_SCSI
         tristate "SGI WD93C93 SCSI Driver"
@@ -573,10 +573,10 @@ config SCSI_ARCMSR_AER
 source "drivers/scsi/megaraid/Kconfig.megaraid"
 
 config SCSI_HPTIOP
-        tristate "HighPoint RocketRAID 3xxx Controller support"
+        tristate "HighPoint RocketRAID 3xxx/4xxx Controller support"
         depends on SCSI && PCI
         help
-          This option enables support for HighPoint RocketRAID 3xxx
+          This option enables support for HighPoint RocketRAID 3xxx/4xxx
           controllers.
 
           To compile this driver as a module, choose M here; the module
@@ -1288,17 +1288,6 @@ config SCSI_PAS16
           To compile this driver as a module, choose M here: the
           module will be called pas16.
 
-config SCSI_PSI240I
-        tristate "PSI240i support"
-        depends on ISA && SCSI
-        help
-          This is support for the PSI240i EIDE interface card which acts as a
-          SCSI host adapter.  Please read the SCSI-HOWTO, available from
-          <http://www.tldp.org/docs.html#howto>.
-
-          To compile this driver as a module, choose M here: the
-          module will be called psi240i.
-
 config SCSI_QLOGIC_FAS
         tristate "Qlogic FAS SCSI support"
         depends on ISA && SCSI
@@ -1359,21 +1348,6 @@ config SCSI_LPFC
           This lpfc driver supports the Emulex LightPulse
           Family of Fibre Channel PCI host adapters.
 
-config SCSI_SEAGATE
-        tristate "Seagate ST-02 and Future Domain TMC-8xx SCSI support"
-        depends on X86 && ISA && SCSI
-        select CHECK_SIGNATURE
-        ---help---
-          These are 8-bit SCSI controllers; the ST-01 is also supported by
-          this driver.  It is explained in section 3.9 of the SCSI-HOWTO,
-          available from <http://www.tldp.org/docs.html#howto>.  If it
-          doesn't work out of the box, you may have to change some macros at
-          compiletime, which are described in <file:drivers/scsi/seagate.c>.
-
-          To compile this driver as a module, choose M here: the
-          module will be called seagate.
-
-# definitely looks not 64bit safe:
 config SCSI_SIM710
         tristate "Simple 53c710 SCSI support (Compaq, NCR machines)"
         depends on (EISA || MCA) && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 2e6129f13d38..93e1428d03fc 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -16,9 +16,8 @@
 
 CFLAGS_aha152x.o =   -DAHA152X_STAT -DAUTOCONF
 CFLAGS_gdth.o    = # -DDEBUG_GDTH=2 -D__SERIAL__ -D__COM2__ -DGDTH_STATISTICS
-CFLAGS_seagate.o =   -DARBITRATE -DPARITY -DSEAGATE_USE_ASM
 
-subdir-$(CONFIG_PCMCIA)         += pcmcia
+obj-$(CONFIG_PCMCIA)            += pcmcia/
 
 obj-$(CONFIG_SCSI)              += scsi_mod.o
 obj-$(CONFIG_SCSI_TGT)          += scsi_tgt.o
@@ -59,7 +58,6 @@ obj-$(CONFIG_MVME16x_SCSI)	+= 53c700.o	mvme16x_scsi.o
 obj-$(CONFIG_BVME6000_SCSI)     += 53c700.o     bvme6000_scsi.o
 obj-$(CONFIG_SCSI_SIM710)       += 53c700.o     sim710.o
 obj-$(CONFIG_SCSI_ADVANSYS)     += advansys.o
-obj-$(CONFIG_SCSI_PSI240I)      += psi240i.o
 obj-$(CONFIG_SCSI_BUSLOGIC)     += BusLogic.o
 obj-$(CONFIG_SCSI_DPT_I2O)      += dpt_i2o.o
 obj-$(CONFIG_SCSI_U14_34F)      += u14-34f.o
@@ -90,7 +88,6 @@ obj-$(CONFIG_SCSI_QLA_FC)	+= qla2xxx/
 obj-$(CONFIG_SCSI_QLA_ISCSI)    += qla4xxx/
 obj-$(CONFIG_SCSI_LPFC)         += lpfc/
 obj-$(CONFIG_SCSI_PAS16)        += pas16.o
-obj-$(CONFIG_SCSI_SEAGATE)      += seagate.o
 obj-$(CONFIG_SCSI_T128)         += t128.o
 obj-$(CONFIG_SCSI_DMX3191D)     += dmx3191d.o
 obj-$(CONFIG_SCSI_DTC3280)      += dtc.o
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index 2597209183d0..eeddbd19eba5 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -295,16 +295,16 @@ static __inline__ void initialize_SCp(Scsi_Cmnd * cmd)
          * various queues are valid.
          */
 
-        if (cmd->use_sg) {
-                cmd->SCp.buffer = (struct scatterlist *) cmd->request_buffer;
-                cmd->SCp.buffers_residual = cmd->use_sg - 1;
+        if (scsi_bufflen(cmd)) {
+                cmd->SCp.buffer = scsi_sglist(cmd);
+                cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
                 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
                 cmd->SCp.this_residual = cmd->SCp.buffer->length;
         } else {
                 cmd->SCp.buffer = NULL;
                 cmd->SCp.buffers_residual = 0;
-                cmd->SCp.ptr = (char *) cmd->request_buffer;
-                cmd->SCp.this_residual = cmd->request_bufflen;
+                cmd->SCp.ptr = NULL;
+                cmd->SCp.this_residual = 0;
         }
 }
 
@@ -932,7 +932,7 @@ static int __devinit NCR5380_init(struct Scsi_Host *instance, int flags)
  *      @instance: adapter to remove
  */
 
-static void __devexit NCR5380_exit(struct Scsi_Host *instance)
+static void NCR5380_exit(struct Scsi_Host *instance)
 {
         struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
 
@@ -975,14 +975,14 @@ static int NCR5380_queue_command(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
                 case WRITE_6:
                 case WRITE_10:
                         hostdata->time_write[cmd->device->id] -= (jiffies - hostdata->timebase);
-                        hostdata->bytes_write[cmd->device->id] += cmd->request_bufflen;
+                        hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);
                         hostdata->pendingw++;
                         break;
                 case READ:
                 case READ_6:
                 case READ_10:
                         hostdata->time_read[cmd->device->id] -= (jiffies - hostdata->timebase);
-                        hostdata->bytes_read[cmd->device->id] += cmd->request_bufflen;
+                        hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);
                         hostdata->pendingr++;
                         break;
         }
@@ -1157,16 +1157,17 @@ static void NCR5380_main(struct work_struct *work)
  *      Locks: takes the needed instance locks
  */
 
-static irqreturn_t NCR5380_intr(int irq, void *dev_id) 
+static irqreturn_t NCR5380_intr(int dummy, void *dev_id)
 {
         NCR5380_local_declare();
-        struct Scsi_Host *instance = (struct Scsi_Host *)dev_id;
+        struct Scsi_Host *instance = dev_id;
         struct NCR5380_hostdata *hostdata = (struct NCR5380_hostdata *) instance->hostdata;
         int done;
         unsigned char basr;
         unsigned long flags;
 
-        dprintk(NDEBUG_INTR, ("scsi : NCR5380 irq %d triggered\n", irq));
+        dprintk(NDEBUG_INTR, ("scsi : NCR5380 irq %d triggered\n",
+                instance->irq));
 
         do {
                 done = 1;
diff --git a/drivers/scsi/a2091.c b/drivers/scsi/a2091.c
index b7c5385e2efe..23f27c9c9895 100644
--- a/drivers/scsi/a2091.c
+++ b/drivers/scsi/a2091.c
@@ -73,18 +73,9 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
         }
 
         if (!dir_in) {
-            /* copy to bounce buffer for a write */
-            if (cmd->use_sg)
-#if 0
-                panic ("scsi%ddma: incomplete s/g support",
-                       instance->host_no);
-#else
+                /* copy to bounce buffer for a write */
                 memcpy (HDATA(instance)->dma_bounce_buffer,
                         cmd->SCp.ptr, cmd->SCp.this_residual);
-#endif
-            else
-                memcpy (HDATA(instance)->dma_bounce_buffer,
-                        cmd->request_buffer, cmd->request_bufflen);
         }
     }
 
@@ -144,30 +135,13 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
 
     /* copy from a bounce buffer, if necessary */
     if (status && HDATA(instance)->dma_bounce_buffer) {
-        if (SCpnt && SCpnt->use_sg) {
-#if 0
-            panic ("scsi%d: incomplete s/g support",
-                   instance->host_no);
-#else
-            if( HDATA(instance)->dma_dir )
+        if( HDATA(instance)->dma_dir )
                 memcpy (SCpnt->SCp.ptr, 
                         HDATA(instance)->dma_bounce_buffer,
                         SCpnt->SCp.this_residual);
-            kfree (HDATA(instance)->dma_bounce_buffer);
-            HDATA(instance)->dma_bounce_buffer = NULL;
-            HDATA(instance)->dma_bounce_len = 0;
-            
-#endif
-        } else {
-            if (HDATA(instance)->dma_dir && SCpnt)
-                memcpy (SCpnt->request_buffer,
-                        HDATA(instance)->dma_bounce_buffer,
-                        SCpnt->request_bufflen);
-
-            kfree (HDATA(instance)->dma_bounce_buffer);
-            HDATA(instance)->dma_bounce_buffer = NULL;
-            HDATA(instance)->dma_bounce_len = 0;
-        }
+        kfree (HDATA(instance)->dma_bounce_buffer);
+        HDATA(instance)->dma_bounce_buffer = NULL;
+        HDATA(instance)->dma_bounce_len = 0;
     }
 }
 
diff --git a/drivers/scsi/a3000.c b/drivers/scsi/a3000.c
index 796f1c4d772e..d7255c8bf281 100644
--- a/drivers/scsi/a3000.c
+++ b/drivers/scsi/a3000.c
@@ -70,12 +70,8 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
 
         if (!dir_in) {
             /* copy to bounce buffer for a write */
-            if (cmd->use_sg) {
-                memcpy (HDATA(a3000_host)->dma_bounce_buffer,
-                        cmd->SCp.ptr, cmd->SCp.this_residual);
-            } else
-                memcpy (HDATA(a3000_host)->dma_bounce_buffer,
-                        cmd->request_buffer, cmd->request_bufflen);
+            memcpy (HDATA(a3000_host)->dma_bounce_buffer,
+                cmd->SCp.ptr, cmd->SCp.this_residual);
         }
 
         addr = virt_to_bus(HDATA(a3000_host)->dma_bounce_buffer);
@@ -146,7 +142,7 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
 
     /* copy from a bounce buffer, if necessary */
     if (status && HDATA(instance)->dma_bounce_buffer) {
-        if (SCpnt && SCpnt->use_sg) {
+        if (SCpnt) {
             if (HDATA(instance)->dma_dir && SCpnt)
                 memcpy (SCpnt->SCp.ptr,
                         HDATA(instance)->dma_bounce_buffer,
@@ -155,11 +151,6 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
             HDATA(instance)->dma_bounce_buffer = NULL;
             HDATA(instance)->dma_bounce_len = 0;
         } else {
-            if (HDATA(instance)->dma_dir && SCpnt)
-                memcpy (SCpnt->request_buffer,
-                        HDATA(instance)->dma_bounce_buffer,
-                        SCpnt->request_bufflen);
-
             kfree (HDATA(instance)->dma_bounce_buffer);
             HDATA(instance)->dma_bounce_buffer = NULL;
             HDATA(instance)->dma_bounce_len = 0;
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index a77ab8d693d4..d7235f42cf5f 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -31,9 +31,9 @@
 #include <linux/slab.h>
 #include <linux/completion.h>
 #include <linux/blkdev.h>
-#include <linux/dma-mapping.h>
 #include <asm/semaphore.h>
 #include <asm/uaccess.h>
+#include <linux/highmem.h> /* For flush_kernel_dcache_page */
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -56,54 +56,54 @@
 /*
  *      Sense codes
  */
- 
-#define SENCODE_NO_SENSE                        0x00
-#define SENCODE_END_OF_DATA                     0x00
-#define SENCODE_BECOMING_READY                  0x04
-#define SENCODE_INIT_CMD_REQUIRED               0x04
-#define SENCODE_PARAM_LIST_LENGTH_ERROR         0x1A
-#define SENCODE_INVALID_COMMAND                 0x20
-#define SENCODE_LBA_OUT_OF_RANGE                0x21
-#define SENCODE_INVALID_CDB_FIELD               0x24
-#define SENCODE_LUN_NOT_SUPPORTED               0x25
-#define SENCODE_INVALID_PARAM_FIELD             0x26
-#define SENCODE_PARAM_NOT_SUPPORTED             0x26
-#define SENCODE_PARAM_VALUE_INVALID             0x26
-#define SENCODE_RESET_OCCURRED                  0x29
-#define SENCODE_LUN_NOT_SELF_CONFIGURED_YET     0x3E
-#define SENCODE_INQUIRY_DATA_CHANGED            0x3F
-#define SENCODE_SAVING_PARAMS_NOT_SUPPORTED     0x39
-#define SENCODE_DIAGNOSTIC_FAILURE              0x40
-#define SENCODE_INTERNAL_TARGET_FAILURE         0x44
-#define SENCODE_INVALID_MESSAGE_ERROR           0x49
-#define SENCODE_LUN_FAILED_SELF_CONFIG          0x4c
-#define SENCODE_OVERLAPPED_COMMAND              0x4E
+
+#define SENCODE_NO_SENSE                        0x00
+#define SENCODE_END_OF_DATA                     0x00
+#define SENCODE_BECOMING_READY                  0x04
+#define SENCODE_INIT_CMD_REQUIRED               0x04
+#define SENCODE_PARAM_LIST_LENGTH_ERROR         0x1A
+#define SENCODE_INVALID_COMMAND                 0x20
+#define SENCODE_LBA_OUT_OF_RANGE                0x21
+#define SENCODE_INVALID_CDB_FIELD               0x24
+#define SENCODE_LUN_NOT_SUPPORTED               0x25
+#define SENCODE_INVALID_PARAM_FIELD             0x26
+#define SENCODE_PARAM_NOT_SUPPORTED             0x26
+#define SENCODE_PARAM_VALUE_INVALID             0x26
+#define SENCODE_RESET_OCCURRED                  0x29
+#define SENCODE_LUN_NOT_SELF_CONFIGURED_YET     0x3E
+#define SENCODE_INQUIRY_DATA_CHANGED            0x3F
+#define SENCODE_SAVING_PARAMS_NOT_SUPPORTED     0x39
+#define SENCODE_DIAGNOSTIC_FAILURE              0x40
+#define SENCODE_INTERNAL_TARGET_FAILURE         0x44
+#define SENCODE_INVALID_MESSAGE_ERROR           0x49
+#define SENCODE_LUN_FAILED_SELF_CONFIG          0x4c
+#define SENCODE_OVERLAPPED_COMMAND              0x4E
 
 /*
  *      Additional sense codes
  */
- 
-#define ASENCODE_NO_SENSE                       0x00
-#define ASENCODE_END_OF_DATA                    0x05
-#define ASENCODE_BECOMING_READY                 0x01
-#define ASENCODE_INIT_CMD_REQUIRED              0x02
-#define ASENCODE_PARAM_LIST_LENGTH_ERROR        0x00
-#define ASENCODE_INVALID_COMMAND                0x00
-#define ASENCODE_LBA_OUT_OF_RANGE               0x00
-#define ASENCODE_INVALID_CDB_FIELD              0x00
-#define ASENCODE_LUN_NOT_SUPPORTED              0x00
-#define ASENCODE_INVALID_PARAM_FIELD            0x00
-#define ASENCODE_PARAM_NOT_SUPPORTED            0x01
-#define ASENCODE_PARAM_VALUE_INVALID            0x02
-#define ASENCODE_RESET_OCCURRED                 0x00
-#define ASENCODE_LUN_NOT_SELF_CONFIGURED_YET    0x00
-#define ASENCODE_INQUIRY_DATA_CHANGED           0x03
-#define ASENCODE_SAVING_PARAMS_NOT_SUPPORTED    0x00
-#define ASENCODE_DIAGNOSTIC_FAILURE             0x80
-#define ASENCODE_INTERNAL_TARGET_FAILURE        0x00
-#define ASENCODE_INVALID_MESSAGE_ERROR          0x00
-#define ASENCODE_LUN_FAILED_SELF_CONFIG         0x00
-#define ASENCODE_OVERLAPPED_COMMAND             0x00
+
+#define ASENCODE_NO_SENSE                       0x00
+#define ASENCODE_END_OF_DATA                    0x05
+#define ASENCODE_BECOMING_READY                 0x01
+#define ASENCODE_INIT_CMD_REQUIRED              0x02
+#define ASENCODE_PARAM_LIST_LENGTH_ERROR        0x00
+#define ASENCODE_INVALID_COMMAND                0x00
+#define ASENCODE_LBA_OUT_OF_RANGE               0x00
+#define ASENCODE_INVALID_CDB_FIELD              0x00
+#define ASENCODE_LUN_NOT_SUPPORTED              0x00
+#define ASENCODE_INVALID_PARAM_FIELD            0x00
+#define ASENCODE_PARAM_NOT_SUPPORTED            0x01
+#define ASENCODE_PARAM_VALUE_INVALID            0x02
+#define ASENCODE_RESET_OCCURRED                 0x00
+#define ASENCODE_LUN_NOT_SELF_CONFIGURED_YET    0x00
+#define ASENCODE_INQUIRY_DATA_CHANGED           0x03
+#define ASENCODE_SAVING_PARAMS_NOT_SUPPORTED    0x00
+#define ASENCODE_DIAGNOSTIC_FAILURE             0x80
+#define ASENCODE_INTERNAL_TARGET_FAILURE        0x00
+#define ASENCODE_INVALID_MESSAGE_ERROR          0x00
+#define ASENCODE_LUN_FAILED_SELF_CONFIG         0x00
+#define ASENCODE_OVERLAPPED_COMMAND             0x00
 
 #define BYTE0(x) (unsigned char)(x)
 #define BYTE1(x) (unsigned char)((x) >> 8)
@@ -115,8 +115,8 @@
  *----------------------------------------------------------------------------*/
 /* SCSI inquiry data */
 struct inquiry_data {
-        u8 inqd_pdt;    /* Peripheral qualifier | Peripheral Device Type  */
-        u8 inqd_dtq;    /* RMB | Device Type Qualifier  */
+        u8 inqd_pdt;    /* Peripheral qualifier | Peripheral Device Type */
+        u8 inqd_dtq;    /* RMB | Device Type Qualifier */
         u8 inqd_ver;    /* ISO version | ECMA version | ANSI-approved version */
         u8 inqd_rdf;    /* AENC | TrmIOP | Response data format */
         u8 inqd_len;    /* Additional length (n-4) */
@@ -130,7 +130,7 @@ struct inquiry_data {
 /*
  *              M O D U L E   G L O B A L S
  */
- 
+
 static unsigned long aac_build_sg(struct scsi_cmnd* scsicmd, struct sgmap* sgmap);
 static unsigned long aac_build_sg64(struct scsi_cmnd* scsicmd, struct sgmap64* psg);
 static unsigned long aac_build_sgraw(struct scsi_cmnd* scsicmd, struct sgmapraw* psg);
@@ -141,9 +141,10 @@ static char *aac_get_status_string(u32 status);
 
 /*
  *      Non dasd selection is handled entirely in aachba now
- */     
- 
+ */
+
 static int nondasd = -1;
+static int aac_cache = 0;
 static int dacmode = -1;
 
 int aac_commit = -1;
@@ -152,6 +153,8 @@ int aif_timeout = 120;
 
 module_param(nondasd, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(nondasd, "Control scanning of hba for nondasd devices. 0=off, 1=on");
+module_param_named(cache, aac_cache, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(cache, "Disable Queue Flush commands:\n\tbit 0 - Disable FUA in WRITE SCSI commands\n\tbit 1 - Disable SYNCHRONIZE_CACHE SCSI command\n\tbit 2 - Disable only if Battery not protecting Cache");
 module_param(dacmode, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(dacmode, "Control whether dma addressing is using 64 bit DAC. 0=off, 1=on");
 module_param_named(commit, aac_commit, int, S_IRUGO|S_IWUSR);
@@ -179,7 +182,7 @@ MODULE_PARM_DESC(check_interval, "Interval in seconds between adapter health che
 
 int aac_check_reset = 1;
 module_param_named(check_reset, aac_check_reset, int, S_IRUGO|S_IWUSR);
-MODULE_PARM_DESC(aac_check_reset, "If adapter fails health check, reset the adapter.");
+MODULE_PARM_DESC(aac_check_reset, "If adapter fails health check, reset the adapter. a value of -1 forces the reset to adapters programmed to ignore it.");
 
 int expose_physicals = -1;
 module_param(expose_physicals, int, S_IRUGO|S_IWUSR);
@@ -193,12 +196,12 @@ static inline int aac_valid_context(struct scsi_cmnd *scsicmd,
                 struct fib *fibptr) {
         struct scsi_device *device;
 
-        if (unlikely(!scsicmd || !scsicmd->scsi_done )) {
+        if (unlikely(!scsicmd || !scsicmd->scsi_done)) {
                 dprintk((KERN_WARNING "aac_valid_context: scsi command corrupt\n"));
-                aac_fib_complete(fibptr);
-                aac_fib_free(fibptr);
-                return 0;
-        }
+                aac_fib_complete(fibptr);
+                aac_fib_free(fibptr);
+                return 0;
+        }
         scsicmd->SCp.phase = AAC_OWNER_MIDLEVEL;
         device = scsicmd->device;
         if (unlikely(!device || !scsi_device_online(device))) {
@@ -240,7 +243,7 @@ int aac_get_config_status(struct aac_dev *dev, int commit_flag)
                             FsaNormal,
                             1, 1,
                             NULL, NULL);
-        if (status < 0 ) {
+        if (status < 0) {
                 printk(KERN_WARNING "aac_get_config_status: SendFIB failed.\n");
         } else {
                 struct aac_get_config_status_resp *reply
@@ -264,10 +267,10 @@ int aac_get_config_status(struct aac_dev *dev, int commit_flag)
                         struct aac_commit_config * dinfo;
                         aac_fib_init(fibptr);
                         dinfo = (struct aac_commit_config *) fib_data(fibptr);
-        
+
                         dinfo->command = cpu_to_le32(VM_ContainerConfig);
                         dinfo->type = cpu_to_le32(CT_COMMIT_CONFIG);
-        
+
                         status = aac_fib_send(ContainerCommand,
                                     fibptr,
                                     sizeof (struct aac_commit_config),
@@ -293,7 +296,7 @@ int aac_get_config_status(struct aac_dev *dev, int commit_flag)
 int aac_get_containers(struct aac_dev *dev)
 {
         struct fsa_dev_info *fsa_dev_ptr;
-        u32 index; 
+        u32 index;
         int status = 0;
         struct fib * fibptr;
         struct aac_get_container_count *dinfo;
@@ -363,6 +366,7 @@ static void aac_internal_transfer(struct scsi_cmnd *scsicmd, void *data, unsigne
         if (buf && transfer_len > 0)
                 memcpy(buf + offset, data, transfer_len);
 
+        flush_kernel_dcache_page(kmap_atomic_to_page(buf - sg->offset));
         kunmap_atomic(buf - sg->offset, KM_IRQ0);
 
 }
@@ -395,7 +399,7 @@ static void get_container_name_callback(void *context, struct fib * fibptr)
                         do {
                                 *dp++ = (*sp) ? *sp++ : ' ';
                         } while (--count > 0);
-                        aac_internal_transfer(scsicmd, d, 
+                        aac_internal_transfer(scsicmd, d,
                           offsetof(struct inquiry_data, inqd_pid), sizeof(d));
                 }
         }
@@ -431,13 +435,13 @@ static int aac_get_container_name(struct scsi_cmnd * scsicmd)
         dinfo->count = cpu_to_le32(sizeof(((struct aac_get_name_resp *)NULL)->data));
 
         status = aac_fib_send(ContainerCommand,
-                  cmd_fibcontext, 
+                  cmd_fibcontext,
                   sizeof (struct aac_get_name),
-                  FsaNormal, 
-                  0, 1, 
-                  (fib_callback) get_container_name_callback, 
+                  FsaNormal,
+                  0, 1,
+                  (fib_callback)get_container_name_callback,
                   (void *) scsicmd);
-        
+
         /*
          *      Check that the command queued to the controller
          */
@@ -445,7 +449,7 @@ static int aac_get_container_name(struct scsi_cmnd * scsicmd)
                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                 return 0;
         }
-                
+
         printk(KERN_WARNING "aac_get_container_name: aac_fib_send failed with status: %d.\n", status);
         aac_fib_complete(cmd_fibcontext);
         aac_fib_free(cmd_fibcontext);
@@ -652,42 +656,47 @@ struct scsi_inq {
  *      @a:     string to copy from
  *      @b:     string to copy to
  *
- *      Copy a String from one location to another
+ *      Copy a String from one location to another
  *      without copying \0
  */
 
 static void inqstrcpy(char *a, char *b)
 {
 
-        while(*a != (char)0) 
+        while (*a != (char)0)
                 *b++ = *a++;
 }
 
 static char *container_types[] = {
-        "None",
-        "Volume",
-        "Mirror",
-        "Stripe",
-        "RAID5",
-        "SSRW",
-        "SSRO",
-        "Morph",
-        "Legacy",
-        "RAID4",
-        "RAID10",             
-        "RAID00",             
-        "V-MIRRORS",          
-        "PSEUDO R4",          
+        "None",
+        "Volume",
+        "Mirror",
+        "Stripe",
+        "RAID5",
+        "SSRW",
+        "SSRO",
+        "Morph",
+        "Legacy",
+        "RAID4",
+        "RAID10",
+        "RAID00",
+        "V-MIRRORS",
+        "PSEUDO R4",
         "RAID50",
         "RAID5D",
         "RAID5D0",
         "RAID1E",
         "RAID6",
         "RAID60",
-        "Unknown"
+        "Unknown"
 };
 
-
+char * get_container_type(unsigned tindex)
+{
+        if (tindex >= ARRAY_SIZE(container_types))
+                tindex = ARRAY_SIZE(container_types) - 1;
+        return container_types[tindex];
+}
 
 /* Function: setinqstr
  *
@@ -707,16 +716,21 @@ static void setinqstr(struct aac_dev *dev, void *data, int tindex)
 
         if (dev->supplement_adapter_info.AdapterTypeText[0]) {
                 char * cp = dev->supplement_adapter_info.AdapterTypeText;
-                int c = sizeof(str->vid);
-                while (*cp && *cp != ' ' && --c)
-                        ++cp;
-                c = *cp;
-                *cp = '\0';
-                inqstrcpy (dev->supplement_adapter_info.AdapterTypeText,
-                  str->vid); 
-                *cp = c;
-                while (*cp && *cp != ' ')
-                        ++cp;
+                int c;
+                if ((cp[0] == 'A') && (cp[1] == 'O') && (cp[2] == 'C'))
+                        inqstrcpy("SMC", str->vid);
+                else {
+                        c = sizeof(str->vid);
+                        while (*cp && *cp != ' ' && --c)
+                                ++cp;
+                        c = *cp;
+                        *cp = '\0';
+                        inqstrcpy (dev->supplement_adapter_info.AdapterTypeText,
+                                   str->vid);
+                        *cp = c;
+                        while (*cp && *cp != ' ')
+                                ++cp;
+                }
                 while (*cp == ' ')
                         ++cp;
                 /* last six chars reserved for vol type */
@@ -898,9 +912,8 @@ static int aac_bounds_32(struct aac_dev * dev, struct scsi_cmnd * cmd, u64 lba)
                             ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
                             0, 0);
                 memcpy(cmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
-                  (sizeof(dev->fsa_dev[cid].sense_data) > sizeof(cmd->sense_buffer))
-                    ? sizeof(cmd->sense_buffer)
-                    : sizeof(dev->fsa_dev[cid].sense_data));
+                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
+                             SCSI_SENSE_BUFFERSIZE));
                 cmd->scsi_done(cmd);
                 return 1;
         }
@@ -981,7 +994,7 @@ static int aac_read_block(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32
         aac_fib_init(fib);
         readcmd = (struct aac_read *) fib_data(fib);
         readcmd->command = cpu_to_le32(VM_CtBlockRead);
-        readcmd->cid = cpu_to_le16(scmd_id(cmd));
+        readcmd->cid = cpu_to_le32(scmd_id(cmd));
         readcmd->block = cpu_to_le32((u32)(lba&0xffffffff));
         readcmd->count = cpu_to_le32(count * 512);
 
@@ -1013,7 +1026,8 @@ static int aac_write_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u
         writecmd->block[1] = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
         writecmd->count = cpu_to_le32(count<<9);
         writecmd->cid = cpu_to_le16(scmd_id(cmd));
-        writecmd->flags = fua ?
+        writecmd->flags = (fua && ((aac_cache & 5) != 1) &&
+          (((aac_cache & 5) != 5) || !fib->dev->cache_protected)) ?
                 cpu_to_le16(IO_TYPE_WRITE|IO_SUREWRITE) :
                 cpu_to_le16(IO_TYPE_WRITE);
         writecmd->bpTotal = 0;
@@ -1072,7 +1086,7 @@ static int aac_write_block(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u3
         aac_fib_init(fib);
         writecmd = (struct aac_write *) fib_data(fib);
         writecmd->command = cpu_to_le32(VM_CtBlockWrite);
-        writecmd->cid = cpu_to_le16(scmd_id(cmd));
+        writecmd->cid = cpu_to_le32(scmd_id(cmd));
         writecmd->block = cpu_to_le32((u32)(lba&0xffffffff));
         writecmd->count = cpu_to_le32(count * 512);
         writecmd->sg.count = cpu_to_le32(1);
@@ -1190,6 +1204,15 @@ static int aac_scsi_32(struct fib * fib, struct scsi_cmnd * cmd)
                                   (fib_callback) aac_srb_callback, (void *) cmd);
 }
 
+static int aac_scsi_32_64(struct fib * fib, struct scsi_cmnd * cmd)
+{
+        if ((sizeof(dma_addr_t) > 4) &&
+         (num_physpages > (0xFFFFFFFFULL >> PAGE_SHIFT)) &&
+         (fib->dev->adapter_info.options & AAC_OPT_SGMAP_HOST64))
+                return FAILED;
+        return aac_scsi_32(fib, cmd);
+}
+
 int aac_get_adapter_info(struct aac_dev* dev)
 {
         struct fib* fibptr;
@@ -1207,11 +1230,11 @@ int aac_get_adapter_info(struct aac_dev* dev)
         memset(info,0,sizeof(*info));
 
         rcode = aac_fib_send(RequestAdapterInfo,
-                         fibptr, 
+                         fibptr,
                          sizeof(*info),
-                         FsaNormal, 
+                         FsaNormal,
                          -1, 1, /* First `interrupt' command uses special wait */
-                         NULL, 
+                         NULL,
                          NULL);
 
         if (rcode < 0) {
@@ -1222,29 +1245,29 @@ int aac_get_adapter_info(struct aac_dev* dev)
         memcpy(&dev->adapter_info, info, sizeof(*info));
 
         if (dev->adapter_info.options & AAC_OPT_SUPPLEMENT_ADAPTER_INFO) {
-                struct aac_supplement_adapter_info * info;
+                struct aac_supplement_adapter_info * sinfo;
 
                 aac_fib_init(fibptr);
 
-                info = (struct aac_supplement_adapter_info *) fib_data(fibptr);
+                sinfo = (struct aac_supplement_adapter_info *) fib_data(fibptr);
 
-                memset(info,0,sizeof(*info));
+                memset(sinfo,0,sizeof(*sinfo));
 
                 rcode = aac_fib_send(RequestSupplementAdapterInfo,
                                  fibptr,
-                                 sizeof(*info),
+                                 sizeof(*sinfo),
                                  FsaNormal,
                                  1, 1,
                                  NULL,
                                  NULL);
 
                 if (rcode >= 0)
-                        memcpy(&dev->supplement_adapter_info, info, sizeof(*info));
+                        memcpy(&dev->supplement_adapter_info, sinfo, sizeof(*sinfo));
         }
 
 
-        /* 
-         * GetBusInfo 
+        /*
+         * GetBusInfo
          */
 
         aac_fib_init(fibptr);
@@ -1267,6 +1290,8 @@ int aac_get_adapter_info(struct aac_dev* dev)
                          1, 1,
                          NULL, NULL);
 
+        /* reasoned default */
+        dev->maximum_num_physicals = 16;
         if (rcode >= 0 && le32_to_cpu(bus_info->Status) == ST_OK) {
                 dev->maximum_num_physicals = le32_to_cpu(bus_info->TargetsPerBus);
                 dev->maximum_num_channels = le32_to_cpu(bus_info->BusCount);
@@ -1276,7 +1301,7 @@ int aac_get_adapter_info(struct aac_dev* dev)
                 char buffer[16];
                 tmp = le32_to_cpu(dev->adapter_info.kernelrev);
                 printk(KERN_INFO "%s%d: kernel %d.%d-%d[%d] %.*s\n",
-                        dev->name, 
+                        dev->name,
                         dev->id,
                         tmp>>24,
                         (tmp>>16)&0xff,
@@ -1305,19 +1330,21 @@ int aac_get_adapter_info(struct aac_dev* dev)
                           (int)sizeof(dev->supplement_adapter_info.VpdInfo.Tsid),
                           dev->supplement_adapter_info.VpdInfo.Tsid);
                 }
-                if (!aac_check_reset ||
+                if (!aac_check_reset || ((aac_check_reset != 1) &&
                   (dev->supplement_adapter_info.SupportedOptions2 &
-                  le32_to_cpu(AAC_OPTION_IGNORE_RESET))) {
+                  AAC_OPTION_IGNORE_RESET))) {
                         printk(KERN_INFO "%s%d: Reset Adapter Ignored\n",
                           dev->name, dev->id);
                 }
         }
 
+        dev->cache_protected = 0;
+        dev->jbod = ((dev->supplement_adapter_info.FeatureBits &
+                AAC_FEATURE_JBOD) != 0);
         dev->nondasd_support = 0;
         dev->raid_scsi_mode = 0;
-        if(dev->adapter_info.options & AAC_OPT_NONDASD){
+        if(dev->adapter_info.options & AAC_OPT_NONDASD)
                 dev->nondasd_support = 1;
-        }
 
         /*
          * If the firmware supports ROMB RAID/SCSI mode and we are currently
@@ -1338,11 +1365,10 @@ int aac_get_adapter_info(struct aac_dev* dev)
         if (dev->raid_scsi_mode != 0)
                 printk(KERN_INFO "%s%d: ROMB RAID/SCSI mode enabled\n",
                                 dev->name, dev->id);
-                
-        if(nondasd != -1) {  
+
+        if (nondasd != -1)
                 dev->nondasd_support = (nondasd!=0);
-        }
-        if(dev->nondasd_support != 0){
+        if(dev->nondasd_support != 0) {
                 printk(KERN_INFO "%s%d: Non-DASD support enabled.\n",dev->name, dev->id);
         }
 
@@ -1371,12 +1397,14 @@ int aac_get_adapter_info(struct aac_dev* dev)
                         rcode = -ENOMEM;
                 }
         }
-        /* 
+        /*
          * Deal with configuring for the individualized limits of each packet
          * interface.
          */
         dev->a_ops.adapter_scsi = (dev->dac_support)
-                                ? aac_scsi_64
+          ? ((aac_get_driver_ident(dev->cardtype)->quirks & AAC_QUIRK_SCSI_32)
+                                ? aac_scsi_32_64
+                                : aac_scsi_64)
                                 : aac_scsi_32;
         if (dev->raw_io_interface) {
                 dev->a_ops.adapter_bounds = (dev->raw_io_64)
@@ -1393,8 +1421,8 @@ int aac_get_adapter_info(struct aac_dev* dev)
                 if (dev->dac_support) {
                         dev->a_ops.adapter_read = aac_read_block64;
                         dev->a_ops.adapter_write = aac_write_block64;
-                        /* 
-                         * 38 scatter gather elements 
+                        /*
+                         * 38 scatter gather elements
                          */
                         dev->scsi_host_ptr->sg_tablesize =
                                 (dev->max_fib_size -
@@ -1498,9 +1526,8 @@ static void io_callback(void *context, struct fib * fibptr)
                                     ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
                                     0, 0);
                 memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
-                  (sizeof(dev->fsa_dev[cid].sense_data) > sizeof(scsicmd->sense_buffer))
-                    ? sizeof(scsicmd->sense_buffer)
-                    : sizeof(dev->fsa_dev[cid].sense_data));
+                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
+                             SCSI_SENSE_BUFFERSIZE));
         }
         aac_fib_complete(fibptr);
         aac_fib_free(fibptr);
@@ -1524,7 +1551,7 @@ static int aac_read(struct scsi_cmnd * scsicmd)
         case READ_6:
                 dprintk((KERN_DEBUG "aachba: received a read(6) command on id %d.\n", scmd_id(scsicmd)));
 
-                lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | 
+                lba = ((scsicmd->cmnd[1] & 0x1F) << 16) |
                         (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
                 count = scsicmd->cmnd[4];
 
@@ -1534,32 +1561,32 @@ static int aac_read(struct scsi_cmnd * scsicmd)
         case READ_16:
                 dprintk((KERN_DEBUG "aachba: received a read(16) command on id %d.\n", scmd_id(scsicmd)));
 
-                lba =   ((u64)scsicmd->cmnd[2] << 56) |
-                        ((u64)scsicmd->cmnd[3] << 48) |
+                lba =   ((u64)scsicmd->cmnd[2] << 56) |
+                        ((u64)scsicmd->cmnd[3] << 48) |
                         ((u64)scsicmd->cmnd[4] << 40) |
                         ((u64)scsicmd->cmnd[5] << 32) |
-                        ((u64)scsicmd->cmnd[6] << 24) | 
+                        ((u64)scsicmd->cmnd[6] << 24) |
                         (scsicmd->cmnd[7] << 16) |
                         (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
-                count = (scsicmd->cmnd[10] << 24) | 
+                count = (scsicmd->cmnd[10] << 24) |
                         (scsicmd->cmnd[11] << 16) |
                         (scsicmd->cmnd[12] << 8) | scsicmd->cmnd[13];
                 break;
         case READ_12:
                 dprintk((KERN_DEBUG "aachba: received a read(12) command on id %d.\n", scmd_id(scsicmd)));
 
-                lba = ((u64)scsicmd->cmnd[2] << 24) | 
+                lba = ((u64)scsicmd->cmnd[2] << 24) |
                         (scsicmd->cmnd[3] << 16) |
-                        (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
-                count = (scsicmd->cmnd[6] << 24) | 
+                        (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
+                count = (scsicmd->cmnd[6] << 24) |
                         (scsicmd->cmnd[7] << 16) |
-                        (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
+                        (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
                 break;
         default:
                 dprintk((KERN_DEBUG "aachba: received a read(10) command on id %d.\n", scmd_id(scsicmd)));
 
-                lba = ((u64)scsicmd->cmnd[2] << 24) | 
-                        (scsicmd->cmnd[3] << 16) | 
+                lba = ((u64)scsicmd->cmnd[2] << 24) |
+                        (scsicmd->cmnd[3] << 16) |
                         (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
                 count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
                 break;
@@ -1584,7 +1611,7 @@ static int aac_read(struct scsi_cmnd * scsicmd)
                 scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                 return 0;
         }
-                
+
         printk(KERN_WARNING "aac_read: aac_fib_send failed with status: %d.\n", status);
         /*
          *      For some reason, the Fib didn't queue, return QUEUE_FULL
@@ -1619,11 +1646,11 @@ static int aac_write(struct scsi_cmnd * scsicmd)
         } else if (scsicmd->cmnd[0] == WRITE_16) { /* 16 byte command */
                 dprintk((KERN_DEBUG "aachba: received a write(16) command on id %d.\n", scmd_id(scsicmd)));
 
-                lba =   ((u64)scsicmd->cmnd[2] << 56) |
+                lba =   ((u64)scsicmd->cmnd[2] << 56) |
                         ((u64)scsicmd->cmnd[3] << 48) |
                         ((u64)scsicmd->cmnd[4] << 40) |
                         ((u64)scsicmd->cmnd[5] << 32) |
-                        ((u64)scsicmd->cmnd[6] << 24) | 
+                        ((u64)scsicmd->cmnd[6] << 24) |
                         (scsicmd->cmnd[7] << 16) |
                         (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
                 count = (scsicmd->cmnd[10] << 24) | (scsicmd->cmnd[11] << 16) |
@@ -1712,8 +1739,8 @@ static void synchronize_callback(void *context, struct fib *fibptr)
                                     ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
                                     0, 0);
                 memcpy(cmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
-                  min(sizeof(dev->fsa_dev[cid].sense_data),
-                          sizeof(cmd->sense_buffer)));
+                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
+                             SCSI_SENSE_BUFFERSIZE));
         }
 
         aac_fib_complete(fibptr);
@@ -1798,7 +1825,7 @@ static int aac_synchronize(struct scsi_cmnd *scsicmd)
         if (active)
                 return SCSI_MLQUEUE_DEVICE_BUSY;
 
-        aac = (struct aac_dev *)scsicmd->device->host->hostdata;
+        aac = (struct aac_dev *)sdev->host->hostdata;
         if (aac->in_reset)
                 return SCSI_MLQUEUE_HOST_BUSY;
 
@@ -1850,14 +1877,14 @@ static int aac_synchronize(struct scsi_cmnd *scsicmd)
  *      Emulate a SCSI command and queue the required request for the
  *      aacraid firmware.
  */
- 
+
 int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 {
         u32 cid;
         struct Scsi_Host *host = scsicmd->device->host;
         struct aac_dev *dev = (struct aac_dev *)host->hostdata;
         struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev;
-        
+
         if (fsa_dev_ptr == NULL)
                 return -1;
         /*
@@ -1898,7 +1925,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                                 }
                         }
                 } else {  /* check for physical non-dasd devices */
-                        if ((dev->nondasd_support == 1) || expose_physicals) {
+                        if (dev->nondasd_support || expose_physicals ||
+                                        dev->jbod) {
                                 if (dev->in_reset)
                                         return -1;
                                 return aac_send_srb_fib(scsicmd);
@@ -1913,7 +1941,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
          * else Command for the controller itself
          */
         else if ((scsicmd->cmnd[0] != INQUIRY) &&       /* only INQUIRY & TUR cmnd supported for controller */
-                (scsicmd->cmnd[0] != TEST_UNIT_READY)) 
+                (scsicmd->cmnd[0] != TEST_UNIT_READY))
         {
                 dprintk((KERN_WARNING "Only INQUIRY & TUR command supported for controller, rcvd = 0x%x.\n", scsicmd->cmnd[0]));
                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
@@ -1922,9 +1950,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                             SENCODE_INVALID_COMMAND,
                             ASENCODE_INVALID_COMMAND, 0, 0, 0, 0);
                 memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
-                  (sizeof(dev->fsa_dev[cid].sense_data) > sizeof(scsicmd->sense_buffer))
-                    ? sizeof(scsicmd->sense_buffer)
-                    : sizeof(dev->fsa_dev[cid].sense_data));
+                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
+                             SCSI_SENSE_BUFFERSIZE));
                 scsicmd->scsi_done(scsicmd);
                 return 0;
         }
@@ -1939,7 +1966,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                 dprintk((KERN_DEBUG "INQUIRY command, ID: %d.\n", cid));
                 memset(&inq_data, 0, sizeof (struct inquiry_data));
 
-                if (scsicmd->cmnd[1] & 0x1 ) {
+                if (scsicmd->cmnd[1] & 0x1) {
                         char *arr = (char *)&inq_data;
 
                         /* EVPD bit set */
@@ -1974,10 +2001,9 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                                   ASENCODE_NO_SENSE, 0, 7, 2, 0);
                                 memcpy(scsicmd->sense_buffer,
                                   &dev->fsa_dev[cid].sense_data,
-                                  (sizeof(dev->fsa_dev[cid].sense_data) >
-                                    sizeof(scsicmd->sense_buffer))
-                                       ? sizeof(scsicmd->sense_buffer)
-                                       : sizeof(dev->fsa_dev[cid].sense_data));
+                                  min_t(size_t,
+                                        sizeof(dev->fsa_dev[cid].sense_data),
+                                        SCSI_SENSE_BUFFERSIZE));
                         }
                         scsicmd->scsi_done(scsicmd);
                         return 0;
@@ -2092,7 +2118,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                 mode_buf[2] = 0;        /* Device-specific param,
                                            bit 8: 0/1 = write enabled/protected
                                            bit 4: 0/1 = FUA enabled */
-                if (dev->raw_io_interface)
+                if (dev->raw_io_interface && ((aac_cache & 5) != 1))
                         mode_buf[2] = 0x10;
                 mode_buf[3] = 0;        /* Block descriptor length */
                 if (((scsicmd->cmnd[2] & 0x3f) == 8) ||
@@ -2100,7 +2126,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                         mode_buf[0] = 6;
                         mode_buf[4] = 8;
                         mode_buf[5] = 1;
-                        mode_buf[6] = 0x04; /* WCE */
+                        mode_buf[6] = ((aac_cache & 6) == 2)
+                                ? 0 : 0x04; /* WCE */
                         mode_buf_length = 7;
                         if (mode_buf_length > scsicmd->cmnd[4])
                                 mode_buf_length = scsicmd->cmnd[4];
@@ -2123,7 +2150,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                 mode_buf[3] = 0;        /* Device-specific param,
                                            bit 8: 0/1 = write enabled/protected
                                            bit 4: 0/1 = FUA enabled */
-                if (dev->raw_io_interface)
+                if (dev->raw_io_interface && ((aac_cache & 5) != 1))
                         mode_buf[3] = 0x10;
                 mode_buf[4] = 0;        /* reserved */
                 mode_buf[5] = 0;        /* reserved */
@@ -2134,7 +2161,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                         mode_buf[1] = 9;
                         mode_buf[8] = 8;
                         mode_buf[9] = 1;
-                        mode_buf[10] = 0x04; /* WCE */
+                        mode_buf[10] = ((aac_cache & 6) == 2)
+                                ? 0 : 0x04; /* WCE */
                         mode_buf_length = 11;
                         if (mode_buf_length > scsicmd->cmnd[8])
                                 mode_buf_length = scsicmd->cmnd[8];
@@ -2179,7 +2207,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                 return 0;
         }
 
-        switch (scsicmd->cmnd[0]) 
+        switch (scsicmd->cmnd[0])
         {
                 case READ_6:
                 case READ_10:
@@ -2192,11 +2220,11 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                          *      corresponds to a container. Needed to convert
                          *      containers to /dev/sd device names
                          */
-                         
+
                         if (scsicmd->request->rq_disk)
                                 strlcpy(fsa_dev_ptr[cid].devname,
                                 scsicmd->request->rq_disk->disk_name,
-                                min(sizeof(fsa_dev_ptr[cid].devname),
+                                min(sizeof(fsa_dev_ptr[cid].devname),
                                 sizeof(scsicmd->request->rq_disk->disk_name) + 1));
 
                         return aac_read(scsicmd);
@@ -2210,9 +2238,16 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                         return aac_write(scsicmd);
 
                 case SYNCHRONIZE_CACHE:
+                        if (((aac_cache & 6) == 6) && dev->cache_protected) {
+                                scsicmd->result = DID_OK << 16 |
+                                        COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
+                                scsicmd->scsi_done(scsicmd);
+                                return 0;
+                        }
                         /* Issue FIB to tell Firmware to flush it's cache */
-                        return aac_synchronize(scsicmd);
-                        
+                        if ((aac_cache & 6) != 2)
+                                return aac_synchronize(scsicmd);
+                        /* FALLTHRU */
                 default:
                         /*
                          *      Unhandled commands
@@ -2223,9 +2258,9 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                                 ILLEGAL_REQUEST, SENCODE_INVALID_COMMAND,
                                 ASENCODE_INVALID_COMMAND, 0, 0, 0, 0);
                         memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
-                          (sizeof(dev->fsa_dev[cid].sense_data) > sizeof(scsicmd->sense_buffer))
-                            ? sizeof(scsicmd->sense_buffer)
-                            : sizeof(dev->fsa_dev[cid].sense_data));
+                                min_t(size_t,
+                                      sizeof(dev->fsa_dev[cid].sense_data),
+                                      SCSI_SENSE_BUFFERSIZE));
                         scsicmd->scsi_done(scsicmd);
                         return 0;
         }
@@ -2243,7 +2278,7 @@ static int query_disk(struct aac_dev *dev, void __user *arg)
                 return -EFAULT;
         if (qd.cnum == -1)
                 qd.cnum = qd.id;
-        else if ((qd.bus == -1) && (qd.id == -1) && (qd.lun == -1)) 
+        else if ((qd.bus == -1) && (qd.id == -1) && (qd.lun == -1))
         {
                 if (qd.cnum < 0 || qd.cnum >= dev->maximum_num_containers)
                         return -EINVAL;
@@ -2370,7 +2405,7 @@ static void aac_srb_callback(void *context, struct fib * fibptr)
 
         scsicmd->sense_buffer[0] = '\0';  /* Initialize sense valid flag to false */
         /*
-         *      Calculate resid for sg 
+         *      Calculate resid for sg
          */
 
         scsi_set_resid(scsicmd, scsi_bufflen(scsicmd)
@@ -2385,10 +2420,8 @@ static void aac_srb_callback(void *context, struct fib * fibptr)
         if (le32_to_cpu(srbreply->status) != ST_OK){
                 int len;
                 printk(KERN_WARNING "aac_srb_callback: srb failed, status = %d\n", le32_to_cpu(srbreply->status));
-                len = (le32_to_cpu(srbreply->sense_data_size) > 
-                                sizeof(scsicmd->sense_buffer)) ?
-                                sizeof(scsicmd->sense_buffer) : 
-                                le32_to_cpu(srbreply->sense_data_size);
+                len = min_t(u32, le32_to_cpu(srbreply->sense_data_size),
+                            SCSI_SENSE_BUFFERSIZE);
                 scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
                 memcpy(scsicmd->sense_buffer, srbreply->sense_data, len);
         }
@@ -2412,7 +2445,7 @@ static void aac_srb_callback(void *context, struct fib * fibptr)
                 case  WRITE_12:
                 case  READ_16:
                 case  WRITE_16:
-                        if(le32_to_cpu(srbreply->data_xfer_length) < scsicmd->underflow ) {
+                        if (le32_to_cpu(srbreply->data_xfer_length) < scsicmd->underflow) {
                                 printk(KERN_WARNING"aacraid: SCSI CMD underflow\n");
                         } else {
                                 printk(KERN_WARNING"aacraid: SCSI CMD Data Overrun\n");
@@ -2481,26 +2514,23 @@ static void aac_srb_callback(void *context, struct fib * fibptr)
                 printk("aacraid: SRB ERROR(%u) %s scsi cmd 0x%x - scsi status 0x%x\n",
                         le32_to_cpu(srbreply->srb_status) & 0x3F,
                         aac_get_status_string(
-                                le32_to_cpu(srbreply->srb_status) & 0x3F), 
-                        scsicmd->cmnd[0], 
+                                le32_to_cpu(srbreply->srb_status) & 0x3F),
+                        scsicmd->cmnd[0],
                         le32_to_cpu(srbreply->scsi_status));
 #endif
                 scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
                 break;
         }
-        if (le32_to_cpu(srbreply->scsi_status) == 0x02 ){  // Check Condition
+        if (le32_to_cpu(srbreply->scsi_status) == SAM_STAT_CHECK_CONDITION) {
                 int len;
                 scsicmd->result |= SAM_STAT_CHECK_CONDITION;
-                len = (le32_to_cpu(srbreply->sense_data_size) > 
-                                sizeof(scsicmd->sense_buffer)) ?
-                                sizeof(scsicmd->sense_buffer) :
-                                le32_to_cpu(srbreply->sense_data_size);
+                len = min_t(u32, le32_to_cpu(srbreply->sense_data_size),
+                            SCSI_SENSE_BUFFERSIZE);
 #ifdef AAC_DETAILED_STATUS_INFO
                 printk(KERN_WARNING "aac_srb_callback: check condition, status = %d len=%d\n",
                                         le32_to_cpu(srbreply->status), len);
 #endif
                 memcpy(scsicmd->sense_buffer, srbreply->sense_data, len);
-                
         }
         /*
          * OR in the scsi status (already shifted up a bit)
@@ -2517,7 +2547,7 @@ static void aac_srb_callback(void *context, struct fib * fibptr)
  * aac_send_scb_fib
  * @scsicmd: the scsi command block
  *
- * This routine will form a FIB and fill in the aac_srb from the 
+ * This routine will form a FIB and fill in the aac_srb from the
  * scsicmd passed in.
  */
 
@@ -2731,7 +2761,7 @@ static struct aac_srb_status_info srb_status_info[] = {
         { SRB_STATUS_ERROR_RECOVERY,    "Error Recovery"},
         { SRB_STATUS_NOT_STARTED,       "Not Started"},
         { SRB_STATUS_NOT_IN_USE,        "Not In Use"},
-        { SRB_STATUS_FORCE_ABORT,       "Force Abort"},
+        { SRB_STATUS_FORCE_ABORT,       "Force Abort"},
         { SRB_STATUS_DOMAIN_VALIDATION_FAIL,"Domain Validation Failure"},
         { 0xff,                         "Unknown Error"}
 };
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 9abba8b90f70..3195d29f2177 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -1,4 +1,4 @@
-#if (!defined(dprintk))
+#ifndef dprintk
 # define dprintk(x)
 #endif
 /* eg: if (nblank(dprintk(x))) */
@@ -12,7 +12,7 @@
  *----------------------------------------------------------------------------*/
 
 #ifndef AAC_DRIVER_BUILD
-# define AAC_DRIVER_BUILD 2449
+# define AAC_DRIVER_BUILD 2455
 # define AAC_DRIVER_BRANCH "-ms"
 #endif
 #define MAXIMUM_NUM_CONTAINERS  32
@@ -50,9 +50,9 @@ struct diskparm
 /*
  *      Firmware constants
  */
- 
+
 #define         CT_NONE                 0
-#define         CT_OK                   218
+#define         CT_OK                   218
 #define         FT_FILESYS      8       /* ADAPTEC's "FSA"(tm) filesystem */
 #define         FT_DRIVE        9       /* physical disk - addressable in scsi by bus/id/lun */
 
@@ -107,12 +107,12 @@ struct user_sgentryraw {
 
 struct sgmap {
         __le32          count;
-        struct sgentry  sg[1]; 
+        struct sgentry  sg[1];
 };
 
 struct user_sgmap {
         u32             count;
-        struct user_sgentry     sg[1]; 
+        struct user_sgentry     sg[1];
 };
 
 struct sgmap64 {
@@ -137,18 +137,18 @@ struct user_sgmapraw {
 
 struct creation_info
 {
-        u8              buildnum;               /* e.g., 588 */
-        u8              usec;                   /* e.g., 588 */
-        u8              via;                    /* e.g., 1 = FSU,
-                                                 *       2 = API
+        u8              buildnum;               /* e.g., 588 */
+        u8              usec;                   /* e.g., 588 */
+        u8              via;                    /* e.g., 1 = FSU,
+                                                 *       2 = API
                                                  */
-        u8              year;                   /* e.g., 1997 = 97 */
+        u8              year;                   /* e.g., 1997 = 97 */
         __le32          date;                   /*
-                                                 * unsigned     Month           :4;     // 1 - 12
-                                                 * unsigned     Day             :6;     // 1 - 32
-                                                 * unsigned     Hour            :6;     // 0 - 23
-                                                 * unsigned     Minute          :6;     // 0 - 60
-                                                 * unsigned     Second          :6;     // 0 - 60
+                                                 * unsigned     Month           :4;     // 1 - 12
+                                                 * unsigned     Day             :6;     // 1 - 32
+                                                 * unsigned     Hour            :6;     // 0 - 23
+                                                 * unsigned     Minute          :6;     // 0 - 60
+                                                 * unsigned     Second          :6;     // 0 - 60
                                                  */
         __le32          serial[2];                      /* e.g., 0x1DEADB0BFAFAF001 */
 };
@@ -184,7 +184,7 @@ struct creation_info
 /*
  *      Set the queues on a 16 byte alignment
  */
- 
+
 #define QUEUE_ALIGNMENT         16
 
 /*
@@ -203,9 +203,9 @@ struct aac_entry {
  *      The adapter assumes the ProducerIndex and ConsumerIndex are grouped
  *      adjacently and in that order.
  */
- 
+
 struct aac_qhdr {
-        __le64 header_addr;/* Address to hand the adapter to access 
+        __le64 header_addr;/* Address to hand the adapter to access
                               to this queue head */
         __le32 *producer; /* The producer index for this queue (host address) */
         __le32 *consumer; /* The consumer index for this queue (host address) */
@@ -215,7 +215,7 @@ struct aac_qhdr {
  *      Define all the events which the adapter would like to notify
  *      the host of.
  */
- 
+
 #define         HostNormCmdQue          1       /* Change in host normal priority command queue */
 #define         HostHighCmdQue          2       /* Change in host high priority command queue */
 #define         HostNormRespQue         3       /* Change in host normal priority response queue */
@@ -286,17 +286,17 @@ struct aac_fibhdr {
         u8 StructType;          /* Type FIB */
         u8 Flags;               /* Flags for FIB */
         __le16 Size;            /* Size of this FIB in bytes */
-        __le16 SenderSize;      /* Size of the FIB in the sender 
+        __le16 SenderSize;      /* Size of the FIB in the sender
                                    (for response sizing) */
         __le32 SenderFibAddress;  /* Host defined data in the FIB */
-        __le32 ReceiverFibAddress;/* Logical address of this FIB for 
+        __le32 ReceiverFibAddress;/* Logical address of this FIB for
                                      the adapter */
         u32 SenderData;         /* Place holder for the sender to store data */
         union {
                 struct {
-                    __le32 _ReceiverTimeStart;  /* Timestamp for 
+                    __le32 _ReceiverTimeStart;  /* Timestamp for
                                                    receipt of fib */
-                    __le32 _ReceiverTimeDone;   /* Timestamp for 
+                    __le32 _ReceiverTimeDone;   /* Timestamp for
                                                    completion of fib */
                 } _s;
         } _u;
@@ -311,7 +311,7 @@ struct hw_fib {
  *      FIB commands
  */
 
-#define         TestCommandResponse             1
+#define         TestCommandResponse             1
 #define         TestAdapterCommand              2
 /*
  *      Lowlevel and comm commands
@@ -350,10 +350,6 @@ struct hw_fib {
 #define         ContainerCommand64              501
 #define         ContainerRawIo                  502
 /*
- *      Cluster Commands
- */
-#define         ClusterCommand                  550
-/*
  *      Scsi Port commands (scsi passthrough)
  */
 #define         ScsiPortCommand                 600
@@ -375,19 +371,19 @@ struct hw_fib {
  */
 
 enum fib_xfer_state {
-        HostOwned                       = (1<<0),
-        AdapterOwned                    = (1<<1),
-        FibInitialized                  = (1<<2),
-        FibEmpty                        = (1<<3),
-        AllocatedFromPool               = (1<<4),
-        SentFromHost                    = (1<<5),
-        SentFromAdapter                 = (1<<6),
-        ResponseExpected                = (1<<7),
-        NoResponseExpected              = (1<<8),
-        AdapterProcessed                = (1<<9),
-        HostProcessed                   = (1<<10),
-        HighPriority                    = (1<<11),
-        NormalPriority                  = (1<<12),
+        HostOwned                       = (1<<0),
+        AdapterOwned                    = (1<<1),
+        FibInitialized                  = (1<<2),
+        FibEmpty                        = (1<<3),
+        AllocatedFromPool               = (1<<4),
+        SentFromHost                    = (1<<5),
+        SentFromAdapter                 = (1<<6),
+        ResponseExpected                = (1<<7),
+        NoResponseExpected              = (1<<8),
+        AdapterProcessed                = (1<<9),
+        HostProcessed                   = (1<<10),
+        HighPriority                    = (1<<11),
+        NormalPriority                  = (1<<12),
         Async                           = (1<<13),
         AsyncIo                         = (1<<13),      // rpbfix: remove with new regime
         PageFileIo                      = (1<<14),      // rpbfix: remove with new regime
@@ -420,7 +416,7 @@ struct aac_init
         __le32  AdapterFibAlign;
         __le32  printfbuf;
         __le32  printfbufsiz;
-        __le32  HostPhysMemPages;   /* number of 4k pages of host 
+        __le32  HostPhysMemPages;   /* number of 4k pages of host
                                        physical memory */
         __le32  HostElapsedSeconds; /* number of seconds since 1970. */
         /*
@@ -481,7 +477,7 @@ struct adapter_ops
 
 struct aac_driver_ident
 {
-        int     (*init)(struct aac_dev *dev);
+        int     (*init)(struct aac_dev *dev);
         char *  name;
         char *  vname;
         char *  model;
@@ -489,7 +485,7 @@ struct aac_driver_ident
         int     quirks;
 };
 /*
- * Some adapter firmware needs communication memory 
+ * Some adapter firmware needs communication memory
  * below 2gig. This tells the init function to set the
  * dma mask such that fib memory will be allocated where the
  * adapter firmware can get to it.
@@ -521,33 +517,39 @@ struct aac_driver_ident
 #define AAC_QUIRK_17SG  0x0010
 
 /*
+ *      Some adapter firmware does not support 64 bit scsi passthrough
+ * commands.
+ */
+#define AAC_QUIRK_SCSI_32       0x0020
+
+/*
  *      The adapter interface specs all queues to be located in the same
  *      physically contigous block. The host structure that defines the
  *      commuication queues will assume they are each a separate physically
  *      contigous memory region that will support them all being one big
- *      contigous block. 
+ *      contigous block.
  *      There is a command and response queue for each level and direction of
  *      commuication. These regions are accessed by both the host and adapter.
  */
- 
+
 struct aac_queue {
-        u64                     logical;        /*address we give the adapter */
+        u64                     logical;        /*address we give the adapter */
         struct aac_entry        *base;          /*system virtual address */
-        struct aac_qhdr         headers;        /*producer,consumer q headers*/
-        u32                     entries;        /*Number of queue entries */
+        struct aac_qhdr         headers;        /*producer,consumer q headers*/
+        u32                     entries;        /*Number of queue entries */
         wait_queue_head_t       qfull;          /*Event to wait on if q full */
         wait_queue_head_t       cmdready;       /*Cmd ready from the adapter */
-                  /* This is only valid for adapter to host command queues. */ 
-        spinlock_t              *lock;          /* Spinlock for this queue must take this lock before accessing the lock */
+                /* This is only valid for adapter to host command queues. */
+        spinlock_t              *lock;          /* Spinlock for this queue must take this lock before accessing the lock */
         spinlock_t              lockdata;       /* Actual lock (used only on one side of the lock) */
-        struct list_head        cmdq;           /* A queue of FIBs which need to be prcessed by the FS thread. This is */
-                                                /* only valid for command queues which receive entries from the adapter. */
+        struct list_head        cmdq;           /* A queue of FIBs which need to be prcessed by the FS thread. This is */
+                                                /* only valid for command queues which receive entries from the adapter. */
         u32                     numpending;     /* Number of entries on outstanding queue. */
         struct aac_dev *        dev;            /* Back pointer to adapter structure */
 };
 
 /*
- *      Message queues. The order here is important, see also the 
+ *      Message queues. The order here is important, see also the
  *      queue type ordering
  */
 
@@ -559,12 +561,12 @@ struct aac_queue_block
 /*
  *      SaP1 Message Unit Registers
  */
- 
+
 struct sa_drawbridge_CSR {
-                                /*      Offset  |  Name */
+                                /*      Offset  |  Name */
         __le32  reserved[10];   /*      00h-27h |  Reserved */
         u8      LUT_Offset;     /*      28h     |  Lookup Table Offset */
-        u8      reserved1[3];   /*      29h-2bh |  Reserved */
+        u8      reserved1[3];   /*      29h-2bh |  Reserved */
         __le32  LUT_Data;       /*      2ch     |  Looup Table Data */
         __le32  reserved2[26];  /*      30h-97h |  Reserved */
         __le16  PRICLEARIRQ;    /*      98h     |  Primary Clear Irq */
@@ -583,8 +585,8 @@ struct sa_drawbridge_CSR {
         __le32  MAILBOX5;       /*      bch     |  Scratchpad 5 */
         __le32  MAILBOX6;       /*      c0h     |  Scratchpad 6 */
         __le32  MAILBOX7;       /*      c4h     |  Scratchpad 7 */
-        __le32  ROM_Setup_Data; /*      c8h     |  Rom Setup and Data */
-        __le32  ROM_Control_Addr;/*     cch     |  Rom Control and Address */
+        __le32  ROM_Setup_Data; /*      c8h     |  Rom Setup and Data */
+        __le32  ROM_Control_Addr;/*     cch     |  Rom Control and Address */
         __le32  reserved3[12];  /*      d0h-ffh |  reserved */
         __le32  LUT[64];        /*    100h-1ffh |  Lookup Table Entries */
 };
@@ -597,7 +599,7 @@ struct sa_drawbridge_CSR {
 #define Mailbox5        SaDbCSR.MAILBOX5
 #define Mailbox6        SaDbCSR.MAILBOX6
 #define Mailbox7        SaDbCSR.MAILBOX7
-        
+
 #define DoorbellReg_p SaDbCSR.PRISETIRQ
 #define DoorbellReg_s SaDbCSR.SECSETIRQ
 #define DoorbellClrReg_p SaDbCSR.PRICLEARIRQ
@@ -611,19 +613,19 @@ struct sa_drawbridge_CSR {
 #define DOORBELL_5      0x0020
 #define DOORBELL_6      0x0040
 
-        
+
 #define PrintfReady     DOORBELL_5
 #define PrintfDone      DOORBELL_5
-        
+
 struct sa_registers {
         struct sa_drawbridge_CSR        SaDbCSR;                        /* 98h - c4h */
 };
-        
+
 
 #define Sa_MINIPORT_REVISION                    1
 
 #define sa_readw(AEP, CSR)              readl(&((AEP)->regs.sa->CSR))
-#define sa_readl(AEP,  CSR)             readl(&((AEP)->regs.sa->CSR))
+#define sa_readl(AEP, CSR)              readl(&((AEP)->regs.sa->CSR))
 #define sa_writew(AEP, CSR, value)      writew(value, &((AEP)->regs.sa->CSR))
 #define sa_writel(AEP, CSR, value)      writel(value, &((AEP)->regs.sa->CSR))
 
@@ -640,21 +642,21 @@ struct rx_mu_registers {
         __le32  IMRx[2];    /*  1310h  | 10h | Inbound Message Registers */
         __le32  OMRx[2];    /*  1318h  | 18h | Outbound Message Registers */
         __le32  IDR;        /*  1320h  | 20h | Inbound Doorbell Register */
-        __le32  IISR;       /*  1324h  | 24h | Inbound Interrupt 
+        __le32  IISR;       /*  1324h  | 24h | Inbound Interrupt
                                                 Status Register */
-        __le32  IIMR;       /*  1328h  | 28h | Inbound Interrupt 
-                                                Mask Register */
+        __le32  IIMR;       /*  1328h  | 28h | Inbound Interrupt
+                                                Mask Register */
         __le32  ODR;        /*  132Ch  | 2Ch | Outbound Doorbell Register */
-        __le32  OISR;       /*  1330h  | 30h | Outbound Interrupt 
+        __le32  OISR;       /*  1330h  | 30h | Outbound Interrupt
                                                 Status Register */
-        __le32  OIMR;       /*  1334h  | 34h | Outbound Interrupt 
+        __le32  OIMR;       /*  1334h  | 34h | Outbound Interrupt
                                                 Mask Register */
         __le32  reserved2;  /*  1338h  | 38h | Reserved */
         __le32  reserved3;  /*  133Ch  | 3Ch | Reserved */
         __le32  InboundQueue;/* 1340h  | 40h | Inbound Queue Port relative to firmware */
         __le32  OutboundQueue;/*1344h  | 44h | Outbound Queue Port relative to firmware */
-                            /* * Must access through ATU Inbound 
-                                 Translation Window */
+                            /* * Must access through ATU Inbound
+                                 Translation Window */
 };
 
 struct rx_inbound {
@@ -710,12 +712,12 @@ struct rkt_registers {
 typedef void (*fib_callback)(void *ctxt, struct fib *fibctx);
 
 struct aac_fib_context {
-        s16                     type;           // used for verification of structure   
-        s16                     size;
+        s16                     type;           // used for verification of structure
+        s16                     size;
         u32                     unique;         // unique value representing this context
         ulong                   jiffies;        // used for cleanup - dmb changed to ulong
         struct list_head        next;           // used to link context's into a linked list
-        struct semaphore        wait_sem;       // this is used to wait for the next fib to arrive.
+        struct semaphore        wait_sem;       // this is used to wait for the next fib to arrive.
         int                     wait;           // Set to true when thread is in WaitForSingleObject
         unsigned long           count;          // total number of FIBs on FibList
         struct list_head        fib_list;       // this holds fibs and their attachd hw_fibs
@@ -734,9 +736,9 @@ struct sense_data {
         u8 EOM:1;               /* End Of Medium - reserved for random access devices */
         u8 filemark:1;          /* Filemark - reserved for random access devices */
 
-        u8 information[4];      /* for direct-access devices, contains the unsigned 
-                                 * logical block address or residue associated with 
-                                 * the sense key 
+        u8 information[4];      /* for direct-access devices, contains the unsigned
+                                 * logical block address or residue associated with
+                                 * the sense key
                                  */
         u8 add_sense_len;       /* number of additional sense bytes to follow this field */
         u8 cmnd_info[4];        /* not used */
@@ -746,7 +748,7 @@ struct sense_data {
         u8 bit_ptr:3;           /* indicates which byte of the CDB or parameter data
                                  * was in error
                                  */
-        u8 BPV:1;               /* bit pointer valid (BPV): 1- indicates that 
+        u8 BPV:1;               /* bit pointer valid (BPV): 1- indicates that
                                  * the bit_ptr field has valid value
                                  */
         u8 reserved2:2;
@@ -780,24 +782,24 @@ struct fib {
         /*
          *      The Adapter that this I/O is destined for.
          */
-        struct aac_dev          *dev;
+        struct aac_dev          *dev;
         /*
          *      This is the event the sendfib routine will wait on if the
          *      caller did not pass one and this is synch io.
          */
-        struct semaphore        event_wait;
+        struct semaphore        event_wait;
         spinlock_t              event_lock;
 
         u32                     done;   /* gets set to 1 when fib is complete */
-        fib_callback            callback;
-        void                    *callback_data;
+        fib_callback            callback;
+        void                    *callback_data;
         u32                     flags; // u32 dmb was ulong
         /*
          *      And for the internal issue/reply queues (we may be able
          *      to merge these two)
          */
         struct list_head        fiblink;
-        void                    *data;
+        void                    *data;
         struct hw_fib           *hw_fib_va;             /* Actual shared object */
         dma_addr_t              hw_fib_pa;              /* physical address of hw_fib*/
 };
@@ -807,7 +809,7 @@ struct fib {
  *
  *      This is returned by the RequestAdapterInfo block
  */
- 
+
 struct aac_adapter_info
 {
         __le32  platform;
@@ -826,7 +828,7 @@ struct aac_adapter_info
         __le32  biosrev;
         __le32  biosbuild;
         __le32  cluster;
-        __le32  clusterchannelmask; 
+        __le32  clusterchannelmask;
         __le32  serial[2];
         __le32  battery;
         __le32  options;
@@ -863,9 +865,10 @@ struct aac_supplement_adapter_info
         __le32  SupportedOptions2;
         __le32  ReservedGrowth[1];
 };
-#define AAC_FEATURE_FALCON      0x00000010
-#define AAC_OPTION_MU_RESET     0x00000001
-#define AAC_OPTION_IGNORE_RESET 0x00000002
+#define AAC_FEATURE_FALCON      cpu_to_le32(0x00000010)
+#define AAC_FEATURE_JBOD        cpu_to_le32(0x08000000)
+#define AAC_OPTION_MU_RESET     cpu_to_le32(0x00000001)
+#define AAC_OPTION_IGNORE_RESET cpu_to_le32(0x00000002)
 #define AAC_SIS_VERSION_V3      3
 #define AAC_SIS_SLOT_UNKNOWN    0xFF
 
@@ -916,13 +919,13 @@ struct aac_bus_info_response {
 #define AAC_OPT_HOST_TIME_FIB           cpu_to_le32(1<<4)
 #define AAC_OPT_RAID50                  cpu_to_le32(1<<5)
 #define AAC_OPT_4GB_WINDOW              cpu_to_le32(1<<6)
-#define AAC_OPT_SCSI_UPGRADEABLE        cpu_to_le32(1<<7)
+#define AAC_OPT_SCSI_UPGRADEABLE        cpu_to_le32(1<<7)
 #define AAC_OPT_SOFT_ERR_REPORT         cpu_to_le32(1<<8)
-#define AAC_OPT_SUPPORTED_RECONDITION   cpu_to_le32(1<<9)
+#define AAC_OPT_SUPPORTED_RECONDITION   cpu_to_le32(1<<9)
 #define AAC_OPT_SGMAP_HOST64            cpu_to_le32(1<<10)
 #define AAC_OPT_ALARM                   cpu_to_le32(1<<11)
 #define AAC_OPT_NONDASD                 cpu_to_le32(1<<12)
-#define AAC_OPT_SCSI_MANAGED            cpu_to_le32(1<<13)
+#define AAC_OPT_SCSI_MANAGED            cpu_to_le32(1<<13)
 #define AAC_OPT_RAID_SCSI_MODE          cpu_to_le32(1<<14)
 #define AAC_OPT_SUPPLEMENT_ADAPTER_INFO cpu_to_le32(1<<16)
 #define AAC_OPT_NEW_COMM                cpu_to_le32(1<<17)
@@ -942,7 +945,7 @@ struct aac_dev
 
         /*
          *      Map for 128 fib objects (64k)
-         */     
+         */
         dma_addr_t              hw_fib_pa;
         struct hw_fib           *hw_fib_va;
         struct hw_fib           *aif_base_va;
@@ -953,24 +956,24 @@ struct aac_dev
 
         struct fib              *free_fib;
         spinlock_t              fib_lock;
-        
+
         struct aac_queue_block *queues;
         /*
          *      The user API will use an IOCTL to register itself to receive
          *      FIBs from the adapter.  The following list is used to keep
          *      track of all the threads that have requested these FIBs.  The
-         *      mutex is used to synchronize access to all data associated 
+         *      mutex is used to synchronize access to all data associated
          *      with the adapter fibs.
          */
         struct list_head        fib_list;
 
         struct adapter_ops      a_ops;
         unsigned long           fsrev;          /* Main driver's revision number */
-        
+
         unsigned                base_size;      /* Size of mapped in region */
         struct aac_init         *init;          /* Holds initialization info to communicate with adapter */
-        dma_addr_t              init_pa;        /* Holds physical address of the init struct */
-        
+        dma_addr_t              init_pa;        /* Holds physical address of the init struct */
+
         struct pci_dev          *pdev;          /* Our PCI interface */
         void *                  printfbuf;      /* pointer to buffer used for printf's from the adapter */
         void *                  comm_addr;      /* Base address of Comm area */
@@ -984,11 +987,11 @@ struct aac_dev
         struct fsa_dev_info     *fsa_dev;
         struct task_struct      *thread;
         int                     cardtype;
-        
+
         /*
          *      The following is the device specific extension.
          */
-#if (!defined(AAC_MIN_FOOTPRINT_SIZE))
+#ifndef AAC_MIN_FOOTPRINT_SIZE
 #       define AAC_MIN_FOOTPRINT_SIZE 8192
 #endif
         union
@@ -1009,7 +1012,9 @@ struct aac_dev
         /* These are in adapter info but they are in the io flow so
          * lets break them out so we don't have to do an AND to check them
          */
-        u8                      nondasd_support; 
+        u8                      nondasd_support;
+        u8                      jbod;
+        u8                      cache_protected;
         u8                      dac_support;
         u8                      raid_scsi_mode;
         u8                      comm_interface;
@@ -1066,18 +1071,19 @@ struct aac_dev
         (dev)->a_ops.adapter_comm(dev, comm)
 
 #define FIB_CONTEXT_FLAG_TIMED_OUT              (0x00000001)
+#define FIB_CONTEXT_FLAG                        (0x00000002)
 
 /*
  *      Define the command values
  */
- 
+
 #define         Null                    0
-#define         GetAttributes           1
-#define         SetAttributes           2
-#define         Lookup                  3
-#define         ReadLink                4
-#define         Read                    5
-#define         Write                   6
+#define         GetAttributes           1
+#define         SetAttributes           2
+#define         Lookup                  3
+#define         ReadLink                4
+#define         Read                    5
+#define         Write                   6
 #define         Create                  7
 #define         MakeDirectory           8
 #define         SymbolicLink            9
@@ -1173,19 +1179,19 @@ struct aac_dev
 
 struct aac_read
 {
-        __le32          command;
-        __le32          cid;
-        __le32          block;
-        __le32          count;
+        __le32          command;
+        __le32          cid;
+        __le32          block;
+        __le32          count;
         struct sgmap    sg;     // Must be last in struct because it is variable
 };
 
 struct aac_read64
 {
-        __le32          command;
-        __le16          cid;
-        __le16          sector_count;
-        __le32          block;
+        __le32          command;
+        __le16          cid;
+        __le16          sector_count;
+        __le32          block;
         __le16          pad;
         __le16          flags;
         struct sgmap64  sg;     // Must be last in struct because it is variable
@@ -1193,26 +1199,26 @@ struct aac_read64
 
 struct aac_read_reply
 {
-        __le32          status;
-        __le32          count;
+        __le32          status;
+        __le32          count;
 };
 
 struct aac_write
 {
         __le32          command;
-        __le32          cid;
-        __le32          block;
-        __le32          count;
-        __le32          stable; // Not used
+        __le32          cid;
+        __le32          block;
+        __le32          count;
+        __le32          stable; // Not used
         struct sgmap    sg;     // Must be last in struct because it is variable
 };
 
 struct aac_write64
 {
-        __le32          command;
-        __le16          cid;
-        __le16          sector_count;
-        __le32          block;
+        __le32          command;
+        __le16          cid;
+        __le16          sector_count;
+        __le32          block;
         __le16          pad;
         __le16          flags;
 #define IO_TYPE_WRITE 0x00000000
@@ -1223,7 +1229,7 @@ struct aac_write64
 struct aac_write_reply
 {
         __le32          status;
-        __le32          count;
+        __le32          count;
         __le32          committed;
 };
 
@@ -1326,10 +1332,10 @@ struct aac_srb_reply
 #define         SRB_NoDataXfer           0x0000
 #define         SRB_DisableDisconnect    0x0004
 #define         SRB_DisableSynchTransfer 0x0008
-#define         SRB_BypassFrozenQueue    0x0010
+#define         SRB_BypassFrozenQueue    0x0010
 #define         SRB_DisableAutosense     0x0020
 #define         SRB_DataIn               0x0040
-#define         SRB_DataOut              0x0080
+#define         SRB_DataOut              0x0080
 
 /*
  * SRB Functions - set in aac_srb->function
@@ -1352,7 +1358,7 @@ struct aac_srb_reply
 #define SRBF_RemoveDevice       0x0016
 #define SRBF_DomainValidation   0x0017
 
-/* 
+/*
  * SRB SCSI Status - set in aac_srb->scsi_status
  */
 #define SRB_STATUS_PENDING                  0x00
@@ -1511,17 +1517,17 @@ struct aac_get_container_count_resp {
  */
 
 struct aac_mntent {
-        __le32                  oid;
+        __le32                  oid;
         u8                      name[16];       /* if applicable */
         struct creation_info    create_info;    /* if applicable */
         __le32                  capacity;
-        __le32                  vol;            /* substrate structure */
-        __le32                  obj;            /* FT_FILESYS, etc. */
-        __le32                  state;          /* unready for mounting, 
+        __le32                  vol;            /* substrate structure */
+        __le32                  obj;            /* FT_FILESYS, etc. */
+        __le32                  state;          /* unready for mounting,
                                                    readonly, etc. */
-        union aac_contentinfo   fileinfo;       /* Info specific to content 
+        union aac_contentinfo   fileinfo;       /* Info specific to content
                                                    manager (eg, filesystem) */
-        __le32                  altoid;         /* != oid <==> snapshot or 
+        __le32                  altoid;         /* != oid <==> snapshot or
                                                    broken mirror exists */
         __le32                  capacityhigh;
 };
@@ -1538,7 +1544,7 @@ struct aac_query_mount {
 
 struct aac_mount {
         __le32          status;
-        __le32          type;           /* should be same as that requested */
+        __le32          type;           /* should be same as that requested */
         __le32          count;
         struct aac_mntent mnt[1];
 };
@@ -1608,7 +1614,7 @@ struct aac_delete_disk {
         u32     disknum;
         u32     cnum;
 };
- 
+
 struct fib_ioctl
 {
         u32     fibctx;
@@ -1622,10 +1628,10 @@ struct revision
         __le32 version;
         __le32 build;
 };
-        
+
 
 /*
- *      Ugly - non Linux like ioctl coding for back compat.
+ *      Ugly - non Linux like ioctl coding for back compat.
  */
 
 #define CTL_CODE(function, method) (                 \
@@ -1633,7 +1639,7 @@ struct revision
 )
 
 /*
- *      Define the method codes for how buffers are passed for I/O and FS 
+ *      Define the method codes for how buffers are passed for I/O and FS
  *      controls
  */
 
@@ -1644,15 +1650,15 @@ struct revision
  *      Filesystem ioctls
  */
 
-#define FSACTL_SENDFIB                          CTL_CODE(2050, METHOD_BUFFERED)
-#define FSACTL_SEND_RAW_SRB                     CTL_CODE(2067, METHOD_BUFFERED)
+#define FSACTL_SENDFIB                          CTL_CODE(2050, METHOD_BUFFERED)
+#define FSACTL_SEND_RAW_SRB                     CTL_CODE(2067, METHOD_BUFFERED)
 #define FSACTL_DELETE_DISK                      0x163
 #define FSACTL_QUERY_DISK                       0x173
 #define FSACTL_OPEN_GET_ADAPTER_FIB             CTL_CODE(2100, METHOD_BUFFERED)
 #define FSACTL_GET_NEXT_ADAPTER_FIB             CTL_CODE(2101, METHOD_BUFFERED)
 #define FSACTL_CLOSE_GET_ADAPTER_FIB            CTL_CODE(2102, METHOD_BUFFERED)
 #define FSACTL_MINIPORT_REV_CHECK               CTL_CODE(2107, METHOD_BUFFERED)
-#define FSACTL_GET_PCI_INFO                     CTL_CODE(2119, METHOD_BUFFERED)
+#define FSACTL_GET_PCI_INFO                     CTL_CODE(2119, METHOD_BUFFERED)
 #define FSACTL_FORCE_DELETE_DISK                CTL_CODE(2120, METHOD_NEITHER)
 #define FSACTL_GET_CONTAINERS                   2131
 #define FSACTL_SEND_LARGE_FIB                   CTL_CODE(2138, METHOD_BUFFERED)
@@ -1661,7 +1667,7 @@ struct revision
 struct aac_common
 {
         /*
-         *      If this value is set to 1 then interrupt moderation will occur 
+         *      If this value is set to 1 then interrupt moderation will occur
          *      in the base commuication support.
          */
         u32 irq_mod;
@@ -1690,11 +1696,11 @@ extern struct aac_common aac_config;
  *      The following macro is used when sending and receiving FIBs. It is
  *      only used for debugging.
  */
- 
+
 #ifdef DBG
 #define FIB_COUNTER_INCREMENT(counter)          (counter)++
 #else
-#define FIB_COUNTER_INCREMENT(counter)          
+#define FIB_COUNTER_INCREMENT(counter)
 #endif
 
 /*
@@ -1726,17 +1732,17 @@ extern struct aac_common aac_config;
  *
  *      The adapter reports is present state through the phase.  Only
  *      a single phase should be ever be set.  Each phase can have multiple
- *      phase status bits to provide more detailed information about the 
- *      state of the board.  Care should be taken to ensure that any phase 
+ *      phase status bits to provide more detailed information about the
+ *      state of the board.  Care should be taken to ensure that any phase
  *      status bits that are set when changing the phase are also valid
  *      for the new phase or be cleared out.  Adapter software (monitor,
- *      iflash, kernel) is responsible for properly maintining the phase 
+ *      iflash, kernel) is responsible for properly maintining the phase
  *      status mailbox when it is running.
- *                                                                                      
- *      MONKER_API Phases                                                       
  *
- *      Phases are bit oriented.  It is NOT valid  to have multiple bits set                                            
- */                                     
+ *      MONKER_API Phases
+ *
+ *      Phases are bit oriented.  It is NOT valid  to have multiple bits set
+ */
 
 #define SELF_TEST_FAILED                0x00000004
 #define MONITOR_PANIC                   0x00000020
@@ -1759,16 +1765,22 @@ extern struct aac_common aac_config;
  *      For FIB communication, we need all of the following things
  *      to send back to the user.
  */
- 
-#define         AifCmdEventNotify       1       /* Notify of event */
+
+#define         AifCmdEventNotify       1       /* Notify of event */
 #define                 AifEnConfigChange       3       /* Adapter configuration change */
 #define                 AifEnContainerChange    4       /* Container configuration change */
 #define                 AifEnDeviceFailure      5       /* SCSI device failed */
+#define                 AifEnEnclosureManagement 13     /* EM_DRIVE_* */
+#define                         EM_DRIVE_INSERTION      31
+#define                         EM_DRIVE_REMOVAL        32
+#define                 AifEnBatteryEvent       14      /* Change in Battery State */
 #define                 AifEnAddContainer       15      /* A new array was created */
 #define                 AifEnDeleteContainer    16      /* A container was deleted */
 #define                 AifEnExpEvent           23      /* Firmware Event Log */
 #define                 AifExeFirmwarePanic     3       /* Firmware Event Panic */
 #define                 AifHighPriority         3       /* Highest Priority Event */
+#define                 AifEnAddJBOD            30      /* JBOD created */
+#define                 AifEnDeleteJBOD         31      /* JBOD deleted */
 
 #define         AifCmdJobProgress       2       /* Progress report */
 #define                 AifJobCtrZero   101     /* Array Zero progress */
@@ -1780,11 +1792,11 @@ extern struct aac_common aac_config;
 #define                 AifDenVolumeExtendComplete 201 /* A volume extend completed */
 #define         AifReqJobList           100     /* Gets back complete job list */
 #define         AifReqJobsForCtr        101     /* Gets back jobs for specific container */
-#define         AifReqJobsForScsi       102     /* Gets back jobs for specific SCSI device */ 
-#define         AifReqJobReport         103     /* Gets back a specific job report or list of them */ 
+#define         AifReqJobsForScsi       102     /* Gets back jobs for specific SCSI device */
+#define         AifReqJobReport         103     /* Gets back a specific job report or list of them */
 #define         AifReqTerminateJob      104     /* Terminates job */
 #define         AifReqSuspendJob        105     /* Suspends a job */
-#define         AifReqResumeJob         106     /* Resumes a job */ 
+#define         AifReqResumeJob         106     /* Resumes a job */
 #define         AifReqSendAPIReport     107     /* API generic report requests */
 #define         AifReqAPIJobStart       108     /* Start a job from the API */
 #define         AifReqAPIJobUpdate      109     /* Update a job report from the API */
@@ -1803,8 +1815,8 @@ struct aac_aifcmd {
 };
 
 /**
- *      Convert capacity to cylinders
- *      accounting for the fact capacity could be a 64 bit value
+ *      Convert capacity to cylinders
+ *      accounting for the fact capacity could be a 64 bit value
  *
  */
 static inline unsigned int cap_to_cyls(sector_t capacity, unsigned divisor)
@@ -1861,6 +1873,7 @@ int aac_probe_container(struct aac_dev *dev, int cid);
 int _aac_rx_init(struct aac_dev *dev);
 int aac_rx_select_comm(struct aac_dev *dev, int comm);
 int aac_rx_deliver_producer(struct fib * fib);
+char * get_container_type(unsigned type);
 extern int numacb;
 extern int acbsize;
 extern char aac_driver_version[];
diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index 1e6d7a9c75bf..851a7e599c50 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -48,13 +48,13 @@
  *      ioctl_send_fib  -       send a FIB from userspace
  *      @dev:   adapter is being processed
  *      @arg:   arguments to the ioctl call
- *      
+ *
  *      This routine sends a fib to the adapter on behalf of a user level
  *      program.
  */
 # define AAC_DEBUG_PREAMBLE     KERN_INFO
 # define AAC_DEBUG_POSTAMBLE
- 
+
 static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
 {
         struct hw_fib * kfib;
@@ -71,7 +71,7 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
         if(fibptr == NULL) {
                 return -ENOMEM;
         }
-                
+
         kfib = fibptr->hw_fib_va;
         /*
          *      First copy in the header so that we can check the size field.
@@ -109,7 +109,7 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
         if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) {
                 aac_adapter_interrupt(dev);
                 /*
-                 * Since we didn't really send a fib, zero out the state to allow 
+                 * Since we didn't really send a fib, zero out the state to allow
                  * cleanup code not to assert.
                  */
                 kfib->header.XferState = 0;
@@ -169,7 +169,7 @@ static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
 
                 fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT;
                 fibctx->size = sizeof(struct aac_fib_context);
-                /*
+                /*
                  *      Yes yes, I know this could be an index, but we have a
                  * better guarantee of uniqueness for the locked loop below.
                  * Without the aid of a persistent history, this also helps
@@ -189,7 +189,7 @@ static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
                 INIT_LIST_HEAD(&fibctx->fib_list);
                 fibctx->jiffies = jiffies/HZ;
                 /*
-                 *      Now add this context onto the adapter's 
+                 *      Now add this context onto the adapter's
                  *      AdapterFibContext list.
                  */
                 spin_lock_irqsave(&dev->fib_lock, flags);
@@ -207,12 +207,12 @@ static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
                 }
                 list_add_tail(&fibctx->next, &dev->fib_list);
                 spin_unlock_irqrestore(&dev->fib_lock, flags);
-                if (copy_to_user(arg,  &fibctx->unique, 
+                if (copy_to_user(arg, &fibctx->unique,
                                                 sizeof(fibctx->unique))) {
                         status = -EFAULT;
                 } else {
                         status = 0;
-                }       
+                }
         }
         return status;
 }
@@ -221,8 +221,8 @@ static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
  *      next_getadapter_fib     -       get the next fib
  *      @dev: adapter to use
  *      @arg: ioctl argument
- *      
- *      This routine will get the next Fib, if available, from the AdapterFibContext
+ *
+ *      This routine will get the next Fib, if available, from the AdapterFibContext
  *      passed in from the user.
  */
 
@@ -234,7 +234,7 @@ static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
         int status;
         struct list_head * entry;
         unsigned long flags;
-        
+
         if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
                 return -EFAULT;
         /*
@@ -243,6 +243,7 @@ static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
          *      Search the list of AdapterFibContext addresses on the adapter
          *      to be sure this is a valid address
          */
+        spin_lock_irqsave(&dev->fib_lock, flags);
         entry = dev->fib_list.next;
         fibctx = NULL;
 
@@ -251,37 +252,37 @@ static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
                 /*
                  *      Extract the AdapterFibContext from the Input parameters.
                  */
-                if (fibctx->unique == f.fibctx) {   /* We found a winner */
+                if (fibctx->unique == f.fibctx) { /* We found a winner */
                         break;
                 }
                 entry = entry->next;
                 fibctx = NULL;
         }
         if (!fibctx) {
+                spin_unlock_irqrestore(&dev->fib_lock, flags);
                 dprintk ((KERN_INFO "Fib Context not found\n"));
                 return -EINVAL;
         }
 
         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
                  (fibctx->size != sizeof(struct aac_fib_context))) {
+                spin_unlock_irqrestore(&dev->fib_lock, flags);
                 dprintk ((KERN_INFO "Fib Context corrupt?\n"));
                 return -EINVAL;
         }
         status = 0;
-        spin_lock_irqsave(&dev->fib_lock, flags);
         /*
          *      If there are no fibs to send back, then either wait or return
          *      -EAGAIN
          */
 return_fib:
         if (!list_empty(&fibctx->fib_list)) {
-                struct list_head * entry;
                 /*
                  *      Pull the next fib from the fibs
                  */
                 entry = fibctx->fib_list.next;
                 list_del(entry);
-                
+
                 fib = list_entry(entry, struct fib, fiblink);
                 fibctx->count--;
                 spin_unlock_irqrestore(&dev->fib_lock, flags);
@@ -289,7 +290,7 @@ return_fib:
                         kfree(fib->hw_fib_va);
                         kfree(fib);
                         return -EFAULT;
-                }       
+                }
                 /*
                  *      Free the space occupied by this copy of the fib.
                  */
@@ -318,7 +319,7 @@ return_fib:
                         }
                 } else {
                         status = -EAGAIN;
-                }       
+                }
         }
         fibctx->jiffies = jiffies/HZ;
         return status;
@@ -327,7 +328,9 @@ return_fib:
 int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
 {
         struct fib *fib;
+        unsigned long flags;
 
+        spin_lock_irqsave(&dev->fib_lock, flags);
         /*
          *      First free any FIBs that have not been consumed.
          */
@@ -350,6 +353,7 @@ int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
          *      Remove the Context from the AdapterFibContext List
          */
         list_del(&fibctx->next);
+        spin_unlock_irqrestore(&dev->fib_lock, flags);
         /*
          *      Invalidate context
          */
@@ -368,7 +372,7 @@ int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
  *
  *      This routine will close down the fibctx passed in from the user.
  */
- 
+
 static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
 {
         struct aac_fib_context *fibctx;
@@ -415,8 +419,8 @@ static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
  *      @arg: ioctl arguments
  *
  *      This routine returns the driver version.
- *      Under Linux, there have been no version incompatibilities, so this is 
- *      simple!
+ *      Under Linux, there have been no version incompatibilities, so this is
+ *      simple!
  */
 
 static int check_revision(struct aac_dev *dev, void __user *arg)
@@ -426,12 +430,12 @@ static int check_revision(struct aac_dev *dev, void __user *arg)
         u32 version;
 
         response.compat = 1;
-        version = (simple_strtol(driver_version, 
+        version = (simple_strtol(driver_version,
                                 &driver_version, 10) << 24) | 0x00000400;
         version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
         version += simple_strtol(driver_version + 1, NULL, 10);
         response.version = cpu_to_le32(version);
-#       if (defined(AAC_DRIVER_BUILD))
+#       ifdef AAC_DRIVER_BUILD
                 response.build = cpu_to_le32(AAC_DRIVER_BUILD);
 #       else
                 response.build = cpu_to_le32(9999);
@@ -464,7 +468,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
         u32 data_dir;
         void __user *sg_user[32];
         void *sg_list[32];
-        u32   sg_indx = 0;
+        u32 sg_indx = 0;
         u32 byte_count = 0;
         u32 actual_fibsize64, actual_fibsize = 0;
         int i;
@@ -475,7 +479,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                 return -EBUSY;
         }
         if (!capable(CAP_SYS_ADMIN)){
-                dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n")); 
+                dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
                 return -EPERM;
         }
         /*
@@ -490,7 +494,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 
         memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */
         if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
-                dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n")); 
+                dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
                 rcode = -EFAULT;
                 goto cleanup;
         }
@@ -507,7 +511,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                 goto cleanup;
         }
         if(copy_from_user(user_srbcmd, user_srb,fibsize)){
-                dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n")); 
+                dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
                 rcode = -EFAULT;
                 goto cleanup;
         }
@@ -518,15 +522,15 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
         // Fix up srb for endian and force some values
 
         srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);       // Force this
-        srbcmd->channel  = cpu_to_le32(user_srbcmd->channel);
+        srbcmd->channel  = cpu_to_le32(user_srbcmd->channel);
         srbcmd->id       = cpu_to_le32(user_srbcmd->id);
-        srbcmd->lun      = cpu_to_le32(user_srbcmd->lun);
-        srbcmd->timeout  = cpu_to_le32(user_srbcmd->timeout);
-        srbcmd->flags    = cpu_to_le32(flags);
+        srbcmd->lun      = cpu_to_le32(user_srbcmd->lun);
+        srbcmd->timeout  = cpu_to_le32(user_srbcmd->timeout);
+        srbcmd->flags    = cpu_to_le32(flags);
         srbcmd->retry_limit = 0; // Obsolete parameter
         srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
         memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
-        
+
         switch (flags & (SRB_DataIn | SRB_DataOut)) {
         case SRB_DataOut:
                 data_dir = DMA_TO_DEVICE;
@@ -582,7 +586,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                 void* p;
                                 /* Does this really need to be GFP_DMA? */
                                 p = kmalloc(upsg->sg[i].count,GFP_KERNEL|__GFP_DMA);
-                                if(p == 0) {
+                                if(!p) {
                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                           upsg->sg[i].count,i,upsg->count));
                                         rcode = -ENOMEM;
@@ -594,7 +598,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                 sg_list[i] = p; // save so we can clean up later
                                 sg_indx = i;
 
-                                if( flags & SRB_DataOut ){
+                                if (flags & SRB_DataOut) {
                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
                                                 rcode = -EFAULT;
@@ -626,7 +630,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                 void* p;
                                 /* Does this really need to be GFP_DMA? */
                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
-                                if(p == 0) {
+                                if(!p) {
                                         kfree (usg);
                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                           usg->sg[i].count,i,usg->count));
@@ -637,7 +641,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                 sg_list[i] = p; // save so we can clean up later
                                 sg_indx = i;
 
-                                if( flags & SRB_DataOut ){
+                                if (flags & SRB_DataOut) {
                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
                                                 kfree (usg);
                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
@@ -668,7 +672,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                 void* p;
                                 /* Does this really need to be GFP_DMA? */
                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
-                                if(p == 0) {
+                                if(!p) {
                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                           usg->sg[i].count,i,usg->count));
                                         rcode = -ENOMEM;
@@ -680,7 +684,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                 sg_list[i] = p; // save so we can clean up later
                                 sg_indx = i;
 
-                                if( flags & SRB_DataOut ){
+                                if (flags & SRB_DataOut) {
                                         if(copy_from_user(p,sg_user[i],usg->sg[i].count)){
                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
                                                 rcode = -EFAULT;
@@ -698,7 +702,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                 dma_addr_t addr;
                                 void* p;
                                 p = kmalloc(upsg->sg[i].count, GFP_KERNEL);
-                                if(p == 0) {
+                                if (!p) {
                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                           upsg->sg[i].count, i, upsg->count));
                                         rcode = -ENOMEM;
@@ -708,7 +712,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                 sg_list[i] = p; // save so we can clean up later
                                 sg_indx = i;
 
-                                if( flags & SRB_DataOut ){
+                                if (flags & SRB_DataOut) {
                                         if(copy_from_user(p, sg_user[i],
                                                         upsg->sg[i].count)) {
                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
@@ -734,19 +738,19 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
         }
 
         if (status != 0){
-                dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n")); 
+                dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
                 rcode = -ENXIO;
                 goto cleanup;
         }
 
-        if( flags & SRB_DataIn ) {
+        if (flags & SRB_DataIn) {
                 for(i = 0 ; i <= sg_indx; i++){
                         byte_count = le32_to_cpu(
                           (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)
                               ? ((struct sgmap64*)&srbcmd->sg)->sg[i].count
                               : srbcmd->sg.sg[i].count);
                         if(copy_to_user(sg_user[i], sg_list[i], byte_count)){
-                                dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n")); 
+                                dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
                                 rcode = -EFAULT;
                                 goto cleanup;
 
@@ -756,7 +760,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 
         reply = (struct aac_srb_reply *) fib_data(srbfib);
         if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){
-                dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n")); 
+                dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n"));
                 rcode = -EFAULT;
                 goto cleanup;
         }
@@ -775,34 +779,34 @@ cleanup:
 }
 
 struct aac_pci_info {
-        u32 bus;
-        u32 slot;
+        u32 bus;
+        u32 slot;
 };
 
 
 static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
 {
-        struct aac_pci_info pci_info;
+        struct aac_pci_info pci_info;
 
         pci_info.bus = dev->pdev->bus->number;
         pci_info.slot = PCI_SLOT(dev->pdev->devfn);
 
-       if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
-               dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
-               return -EFAULT;
+        if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
+                dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
+                return -EFAULT;
         }
-        return 0;
+        return 0;
 }
- 
+
 
 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
 {
         int status;
-        
+
         /*
          *      HBA gets first crack
          */
-         
+
         status = aac_dev_ioctl(dev, cmd, arg);
         if(status != -ENOTTY)
                 return status;
@@ -832,7 +836,7 @@ int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
                 break;
         default:
                 status = -ENOTTY;
-                break;  
+                break;
         }
         return status;
 }
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 8736813a0296..89cc8b7b42a2 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -301,10 +301,10 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
         if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
                 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
                         (status[0] == 0x00000001)) {
-                if (status[1] & AAC_OPT_NEW_COMM_64)
+                if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
                         dev->raw_io_64 = 1;
                 if (dev->a_ops.adapter_comm &&
-                    (status[1] & AAC_OPT_NEW_COMM))
+                    (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM)))
                         dev->comm_interface = AAC_COMM_MESSAGE;
                 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
                     (status[2] > dev->base_size)) {
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index abce48ccc85b..81b36923e0ef 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -56,7 +56,7 @@
  *      Allocate and map the shared PCI space for the FIB blocks used to
  *      talk to the Adaptec firmware.
  */
- 
+
 static int fib_map_alloc(struct aac_dev *dev)
 {
         dprintk((KERN_INFO
@@ -109,14 +109,16 @@ int aac_fib_setup(struct aac_dev * dev)
         }
         if (i<0)
                 return -ENOMEM;
-                
+
         hw_fib = dev->hw_fib_va;
         hw_fib_pa = dev->hw_fib_pa;
         memset(hw_fib, 0, dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
         /*
          *      Initialise the fibs
          */
-        for (i = 0, fibptr = &dev->fibs[i]; i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); i++, fibptr++) 
+        for (i = 0, fibptr = &dev->fibs[i];
+                i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
+                i++, fibptr++)
         {
                 fibptr->dev = dev;
                 fibptr->hw_fib_va = hw_fib;
@@ -148,13 +150,13 @@ int aac_fib_setup(struct aac_dev * dev)
  *      Allocate a fib from the adapter fib pool. If the pool is empty we
  *      return NULL.
  */
- 
+
 struct fib *aac_fib_alloc(struct aac_dev *dev)
 {
         struct fib * fibptr;
         unsigned long flags;
         spin_lock_irqsave(&dev->fib_lock, flags);
-        fibptr = dev->free_fib; 
+        fibptr = dev->free_fib;
         if(!fibptr){
                 spin_unlock_irqrestore(&dev->fib_lock, flags);
                 return fibptr;
@@ -171,6 +173,7 @@ struct fib *aac_fib_alloc(struct aac_dev *dev)
          *      each I/O
          */
         fibptr->hw_fib_va->header.XferState = 0;
+        fibptr->flags = 0;
         fibptr->callback = NULL;
         fibptr->callback_data = NULL;
 
@@ -183,7 +186,7 @@ struct fib *aac_fib_alloc(struct aac_dev *dev)
  *
  *      Frees up a fib and places it on the appropriate queue
  */
- 
+
 void aac_fib_free(struct fib *fibptr)
 {
         unsigned long flags;
@@ -204,10 +207,10 @@ void aac_fib_free(struct fib *fibptr)
 /**
  *      aac_fib_init    -       initialise a fib
  *      @fibptr: The fib to initialize
- *      
+ *
  *      Set up the generic fib fields ready for use
  */
- 
+
 void aac_fib_init(struct fib *fibptr)
 {
         struct hw_fib *hw_fib = fibptr->hw_fib_va;
@@ -227,12 +230,12 @@ void aac_fib_init(struct fib *fibptr)
  *      Will deallocate and return to the free pool the FIB pointed to by the
  *      caller.
  */
- 
+
 static void fib_dealloc(struct fib * fibptr)
 {
         struct hw_fib *hw_fib = fibptr->hw_fib_va;
         BUG_ON(hw_fib->header.StructType != FIB_MAGIC);
-        hw_fib->header.XferState = 0;        
+        hw_fib->header.XferState = 0;
 }
 
 /*
@@ -241,7 +244,7 @@ static void fib_dealloc(struct fib * fibptr)
  *      these routines and are the only routines which have a knowledge of the
  *       how these queues are implemented.
  */
- 
+
 /**
  *      aac_get_entry           -       get a queue entry
  *      @dev: Adapter
@@ -254,7 +257,7 @@ static void fib_dealloc(struct fib * fibptr)
  *      is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
  *      returned.
  */
- 
+
 static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify)
 {
         struct aac_queue * q;
@@ -279,26 +282,27 @@ static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entr
                                 idx = ADAP_NORM_RESP_ENTRIES;
                 }
                 if (idx != le32_to_cpu(*(q->headers.consumer)))
-                        *nonotify = 1; 
+                        *nonotify = 1;
         }
 
         if (qid == AdapNormCmdQueue) {
-                if (*index >= ADAP_NORM_CMD_ENTRIES) 
+                if (*index >= ADAP_NORM_CMD_ENTRIES)
                         *index = 0; /* Wrap to front of the Producer Queue. */
         } else {
-                if (*index >= ADAP_NORM_RESP_ENTRIES) 
+                if (*index >= ADAP_NORM_RESP_ENTRIES)
                         *index = 0; /* Wrap to front of the Producer Queue. */
         }
 
-        if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { /* Queue is full */
+        /* Queue is full */
+        if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) {
                 printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
                                 qid, q->numpending);
                 return 0;
         } else {
-                *entry = q->base + *index;
+                *entry = q->base + *index;
                 return 1;
         }
-}   
+}
 
 /**
  *      aac_queue_get           -       get the next free QE
@@ -320,31 +324,29 @@ int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw
 {
         struct aac_entry * entry = NULL;
         int map = 0;
-            
+
         if (qid == AdapNormCmdQueue) {
                 /*  if no entries wait for some if caller wants to */
-                while (!aac_get_entry(dev, qid, &entry, index, nonotify)) 
-                {
+                while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
                         printk(KERN_ERR "GetEntries failed\n");
                 }
-                /*
-                 *      Setup queue entry with a command, status and fib mapped
-                 */
-                entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
-                map = 1;
+                /*
+                 *      Setup queue entry with a command, status and fib mapped
+                 */
+                entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
+                map = 1;
         } else {
-                while(!aac_get_entry(dev, qid, &entry, index, nonotify)) 
-                {
+                while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
                         /* if no entries wait for some if caller wants to */
                 }
-                /*
-                 *      Setup queue entry with command, status and fib mapped
-                 */
-                entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
-                entry->addr = hw_fib->header.SenderFibAddress;
-                        /* Restore adapters pointer to the FIB */
+                /*
+                 *      Setup queue entry with command, status and fib mapped
+                 */
+                entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
+                entry->addr = hw_fib->header.SenderFibAddress;
+                        /* Restore adapters pointer to the FIB */
                 hw_fib->header.ReceiverFibAddress = hw_fib->header.SenderFibAddress;    /* Let the adapter now where to find its data */
-                map = 0;
+                map = 0;
         }
         /*
          *      If MapFib is true than we need to map the Fib and put pointers
@@ -356,8 +358,8 @@ int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw
 }
 
 /*
- *      Define the highest level of host to adapter communication routines. 
- *      These routines will support host to adapter FS commuication. These 
+ *      Define the highest level of host to adapter communication routines.
+ *      These routines will support host to adapter FS commuication. These
  *      routines have no knowledge of the commuication method used. This level
  *      sends and receives FIBs. This level has no knowledge of how these FIBs
  *      get passed back and forth.
@@ -379,7 +381,7 @@ int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw
  *      an event to wait on must be supplied. This event will be set when a
  *      response FIB is received from the adapter.
  */
- 
+
 int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
                 int priority, int wait, int reply, fib_callback callback,
                 void *callback_data)
@@ -392,16 +394,17 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
         if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
                 return -EBUSY;
         /*
-         *      There are 5 cases with the wait and reponse requested flags. 
+         *      There are 5 cases with the wait and reponse requested flags.
          *      The only invalid cases are if the caller requests to wait and
          *      does not request a response and if the caller does not want a
          *      response and the Fib is not allocated from pool. If a response
          *      is not requesed the Fib will just be deallocaed by the DPC
          *      routine when the response comes back from the adapter. No
-         *      further processing will be done besides deleting the Fib. We 
+         *      further processing will be done besides deleting the Fib. We
          *      will have a debug mode where the adapter can notify the host
          *      it had a problem and the host can log that fact.
          */
+        fibptr->flags = 0;
         if (wait && !reply) {
                 return -EINVAL;
         } else if (!wait && reply) {
@@ -413,7 +416,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
         } else if (wait && reply) {
                 hw_fib->header.XferState |= cpu_to_le32(ResponseExpected);
                 FIB_COUNTER_INCREMENT(aac_config.NormalSent);
-        } 
+        }
         /*
          *      Map the fib into 32bits by using the fib number
          */
@@ -436,7 +439,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
         hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size);
         if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) {
                 return -EMSGSIZE;
-        }                
+        }
         /*
          *      Get a queue entry connect the FIB to it and send an notify
          *      the adapter a command is ready.
@@ -450,10 +453,10 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
         if (!wait) {
                 fibptr->callback = callback;
                 fibptr->callback_data = callback_data;
+                fibptr->flags = FIB_CONTEXT_FLAG;
         }
 
         fibptr->done = 0;
-        fibptr->flags = 0;
 
         FIB_COUNTER_INCREMENT(aac_config.FibsSent);
 
@@ -473,9 +476,9 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
         aac_adapter_deliver(fibptr);
 
         /*
-         *      If the caller wanted us to wait for response wait now. 
+         *      If the caller wanted us to wait for response wait now.
          */
-    
+
         if (wait) {
                 spin_unlock_irqrestore(&fibptr->event_lock, flags);
                 /* Only set for first known interruptable command */
@@ -522,7 +525,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
                 }
                 spin_unlock_irqrestore(&fibptr->event_lock, flags);
                 BUG_ON(fibptr->done == 0);
-                        
+
                 if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
                         return -ETIMEDOUT;
                 return 0;
@@ -537,15 +540,15 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
                 return 0;
 }
 
-/** 
+/**
  *      aac_consumer_get        -       get the top of the queue
  *      @dev: Adapter
  *      @q: Queue
  *      @entry: Return entry
  *
  *      Will return a pointer to the entry on the top of the queue requested that
- *      we are a consumer of, and return the address of the queue entry. It does
- *      not change the state of the queue. 
+ *      we are a consumer of, and return the address of the queue entry. It does
+ *      not change the state of the queue.
  */
 
 int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry)
@@ -560,10 +563,10 @@ int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entr
                  *      the end of the queue, else we just use the entry
                  *      pointed to by the header index
                  */
-                if (le32_to_cpu(*q->headers.consumer) >= q->entries) 
-                        index = 0;              
+                if (le32_to_cpu(*q->headers.consumer) >= q->entries)
+                        index = 0;
                 else
-                        index = le32_to_cpu(*q->headers.consumer);
+                        index = le32_to_cpu(*q->headers.consumer);
                 *entry = q->base + index;
                 status = 1;
         }
@@ -587,12 +590,12 @@ void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid)
 
         if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer))
                 wasfull = 1;
-        
+
         if (le32_to_cpu(*q->headers.consumer) >= q->entries)
                 *q->headers.consumer = cpu_to_le32(1);
         else
                 *q->headers.consumer = cpu_to_le32(le32_to_cpu(*q->headers.consumer)+1);
-        
+
         if (wasfull) {
                 switch (qid) {
 
@@ -608,7 +611,7 @@ void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid)
                 }
                 aac_adapter_notify(dev, notify);
         }
-}        
+}
 
 /**
  *      aac_fib_adapter_complete        -       complete adapter issued fib
@@ -630,32 +633,32 @@ int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
         if (hw_fib->header.XferState == 0) {
                 if (dev->comm_interface == AAC_COMM_MESSAGE)
                         kfree (hw_fib);
-                return 0;
+                return 0;
         }
         /*
          *      If we plan to do anything check the structure type first.
-         */ 
-        if ( hw_fib->header.StructType != FIB_MAGIC ) {
+         */
+        if (hw_fib->header.StructType != FIB_MAGIC) {
                 if (dev->comm_interface == AAC_COMM_MESSAGE)
                         kfree (hw_fib);
-                return -EINVAL;
+                return -EINVAL;
         }
         /*
          *      This block handles the case where the adapter had sent us a
          *      command and we have finished processing the command. We
-         *      call completeFib when we are done processing the command 
-         *      and want to send a response back to the adapter. This will 
+         *      call completeFib when we are done processing the command
+         *      and want to send a response back to the adapter. This will
          *      send the completed cdb to the adapter.
          */
         if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) {
                 if (dev->comm_interface == AAC_COMM_MESSAGE) {
                         kfree (hw_fib);
                 } else {
-                        u32 index;
-                        hw_fib->header.XferState |= cpu_to_le32(HostProcessed);
+                        u32 index;
+                        hw_fib->header.XferState |= cpu_to_le32(HostProcessed);
                         if (size) {
                                 size += sizeof(struct aac_fibhdr);
-                                if (size > le16_to_cpu(hw_fib->header.SenderSize)) 
+                                if (size > le16_to_cpu(hw_fib->header.SenderSize))
                                         return -EMSGSIZE;
                                 hw_fib->header.Size = cpu_to_le16(size);
                         }
@@ -667,12 +670,11 @@ int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
                         if (!(nointr & (int)aac_config.irq_mod))
                                 aac_adapter_notify(dev, AdapNormRespQueue);
                 }
+        } else {
+                printk(KERN_WARNING "aac_fib_adapter_complete: "
+                        "Unknown xferstate detected.\n");
+                BUG();
         }
-        else 
-        {
-                printk(KERN_WARNING "aac_fib_adapter_complete: Unknown xferstate detected.\n");
-                BUG();
-        }   
         return 0;
 }
 
@@ -682,7 +684,7 @@ int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
  *
  *      Will do all necessary work to complete a FIB.
  */
- 
+
 int aac_fib_complete(struct fib *fibptr)
 {
         struct hw_fib * hw_fib = fibptr->hw_fib_va;
@@ -692,15 +694,15 @@ int aac_fib_complete(struct fib *fibptr)
          */
 
         if (hw_fib->header.XferState == 0)
-                return 0;
+                return 0;
         /*
          *      If we plan to do anything check the structure type first.
-         */ 
+         */
 
         if (hw_fib->header.StructType != FIB_MAGIC)
-                return -EINVAL;
+                return -EINVAL;
         /*
-         *      This block completes a cdb which orginated on the host and we 
+         *      This block completes a cdb which orginated on the host and we
          *      just need to deallocate the cdb or reinit it. At this point the
          *      command is complete that we had sent to the adapter and this
          *      cdb could be reused.
@@ -721,7 +723,7 @@ int aac_fib_complete(struct fib *fibptr)
                 fib_dealloc(fibptr);
         } else {
                 BUG();
-        }   
+        }
         return 0;
 }
 
@@ -741,7 +743,7 @@ void aac_printf(struct aac_dev *dev, u32 val)
         {
                 int length = val & 0xffff;
                 int level = (val >> 16) & 0xffff;
-                
+
                 /*
                  *      The size of the printfbuf is set in port.c
                  *      There is no variable or define for it
@@ -755,7 +757,7 @@ void aac_printf(struct aac_dev *dev, u32 val)
                 else
                         printk(KERN_INFO "%s:%s", dev->name, cp);
         }
-        memset(cp, 0,  256);
+        memset(cp, 0, 256);
 }
 
 
@@ -773,20 +775,20 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
 {
         struct hw_fib * hw_fib = fibptr->hw_fib_va;
         struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data;
-        u32 container;
+        u32 channel, id, lun, container;
         struct scsi_device *device;
         enum {
                 NOTHING,
                 DELETE,
                 ADD,
                 CHANGE
-        } device_config_needed;
+        } device_config_needed = NOTHING;
 
         /* Sniff for container changes */
 
         if (!dev || !dev->fsa_dev)
                 return;
-        container = (u32)-1;
+        container = channel = id = lun = (u32)-1;
 
         /*
          *      We have set this up to try and minimize the number of
@@ -796,13 +798,13 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
          */
         switch (le32_to_cpu(aifcmd->command)) {
         case AifCmdDriverNotify:
-                switch (le32_to_cpu(((u32 *)aifcmd->data)[0])) {
+                switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
                 /*
                  *      Morph or Expand complete
                  */
                 case AifDenMorphComplete:
                 case AifDenVolumeExtendComplete:
-                        container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
+                        container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
                         if (container >= dev->maximum_num_containers)
                                 break;
 
@@ -814,9 +816,9 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                          */
 
                         if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) {
-                                device = scsi_device_lookup(dev->scsi_host_ptr, 
-                                        CONTAINER_TO_CHANNEL(container), 
-                                        CONTAINER_TO_ID(container), 
+                                device = scsi_device_lookup(dev->scsi_host_ptr,
+                                        CONTAINER_TO_CHANNEL(container),
+                                        CONTAINER_TO_ID(container),
                                         CONTAINER_TO_LUN(container));
                                 if (device) {
                                         dev->fsa_dev[container].config_needed = CHANGE;
@@ -835,25 +837,29 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                         if (container >= dev->maximum_num_containers)
                                 break;
                         if ((dev->fsa_dev[container].config_waiting_on ==
-                            le32_to_cpu(*(u32 *)aifcmd->data)) &&
+                            le32_to_cpu(*(__le32 *)aifcmd->data)) &&
                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
                                 dev->fsa_dev[container].config_waiting_on = 0;
                 } else for (container = 0;
                     container < dev->maximum_num_containers; ++container) {
                         if ((dev->fsa_dev[container].config_waiting_on ==
-                            le32_to_cpu(*(u32 *)aifcmd->data)) &&
+                            le32_to_cpu(*(__le32 *)aifcmd->data)) &&
                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
                                 dev->fsa_dev[container].config_waiting_on = 0;
                 }
                 break;
 
         case AifCmdEventNotify:
-                switch (le32_to_cpu(((u32 *)aifcmd->data)[0])) {
+                switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
+                case AifEnBatteryEvent:
+                        dev->cache_protected =
+                                (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3));
+                        break;
                 /*
                  *      Add an Array.
                  */
                 case AifEnAddContainer:
-                        container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
+                        container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
                         if (container >= dev->maximum_num_containers)
                                 break;
                         dev->fsa_dev[container].config_needed = ADD;
@@ -866,7 +872,7 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                  *      Delete an Array.
                  */
                 case AifEnDeleteContainer:
-                        container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
+                        container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
                         if (container >= dev->maximum_num_containers)
                                 break;
                         dev->fsa_dev[container].config_needed = DELETE;
@@ -880,7 +886,7 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                  * waiting on something else, setup to wait on a Config Change.
                  */
                 case AifEnContainerChange:
-                        container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
+                        container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
                         if (container >= dev->maximum_num_containers)
                                 break;
                         if (dev->fsa_dev[container].config_waiting_on &&
@@ -895,6 +901,60 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                 case AifEnConfigChange:
                         break;
 
+                case AifEnAddJBOD:
+                case AifEnDeleteJBOD:
+                        container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
+                        if ((container >> 28))
+                                break;
+                        channel = (container >> 24) & 0xF;
+                        if (channel >= dev->maximum_num_channels)
+                                break;
+                        id = container & 0xFFFF;
+                        if (id >= dev->maximum_num_physicals)
+                                break;
+                        lun = (container >> 16) & 0xFF;
+                        channel = aac_phys_to_logical(channel);
+                        device_config_needed =
+                          (((__le32 *)aifcmd->data)[0] ==
+                            cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE;
+                        break;
+
+                case AifEnEnclosureManagement:
+                        /*
+                         * If in JBOD mode, automatic exposure of new
+                         * physical target to be suppressed until configured.
+                         */
+                        if (dev->jbod)
+                                break;
+                        switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) {
+                        case EM_DRIVE_INSERTION:
+                        case EM_DRIVE_REMOVAL:
+                                container = le32_to_cpu(
+                                        ((__le32 *)aifcmd->data)[2]);
+                                if ((container >> 28))
+                                        break;
+                                channel = (container >> 24) & 0xF;
+                                if (channel >= dev->maximum_num_channels)
+                                        break;
+                                id = container & 0xFFFF;
+                                lun = (container >> 16) & 0xFF;
+                                if (id >= dev->maximum_num_physicals) {
+                                        /* legacy dev_t ? */
+                                        if ((0x2000 <= id) || lun || channel ||
+                                          ((channel = (id >> 7) & 0x3F) >=
+                                          dev->maximum_num_channels))
+                                                break;
+                                        lun = (id >> 4) & 7;
+                                        id &= 0xF;
+                                }
+                                channel = aac_phys_to_logical(channel);
+                                device_config_needed =
+                                  (((__le32 *)aifcmd->data)[3]
+                                    == cpu_to_le32(EM_DRIVE_INSERTION)) ?
+                                  ADD : DELETE;
+                                break;
+                        }
+                        break;
                 }
 
                 /*
@@ -905,13 +965,13 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                         if (container >= dev->maximum_num_containers)
                                 break;
                         if ((dev->fsa_dev[container].config_waiting_on ==
-                            le32_to_cpu(*(u32 *)aifcmd->data)) &&
+                            le32_to_cpu(*(__le32 *)aifcmd->data)) &&
                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
                                 dev->fsa_dev[container].config_waiting_on = 0;
                 } else for (container = 0;
                     container < dev->maximum_num_containers; ++container) {
                         if ((dev->fsa_dev[container].config_waiting_on ==
-                            le32_to_cpu(*(u32 *)aifcmd->data)) &&
+                            le32_to_cpu(*(__le32 *)aifcmd->data)) &&
                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
                                 dev->fsa_dev[container].config_waiting_on = 0;
                 }
@@ -926,9 +986,9 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                  * wait for a container change.
                  */
 
-                if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero))
-                 && ((((u32 *)aifcmd->data)[6] == ((u32 *)aifcmd->data)[5])
-                  || (((u32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess)))) {
+                if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
+                    (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] ||
+                     ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) {
                         for (container = 0;
                             container < dev->maximum_num_containers;
                             ++container) {
@@ -943,9 +1003,9 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                                         jiffies;
                         }
                 }
-                if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero))
-                 && (((u32 *)aifcmd->data)[6] == 0)
-                 && (((u32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning))) {
+                if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
+                    ((__le32 *)aifcmd->data)[6] == 0 &&
+                    ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) {
                         for (container = 0;
                             container < dev->maximum_num_containers;
                             ++container) {
@@ -963,7 +1023,7 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                 break;
         }
 
-        device_config_needed = NOTHING;
+        if (device_config_needed == NOTHING)
         for (container = 0; container < dev->maximum_num_containers;
             ++container) {
                 if ((dev->fsa_dev[container].config_waiting_on == 0) &&
@@ -972,6 +1032,9 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
                         device_config_needed =
                                 dev->fsa_dev[container].config_needed;
                         dev->fsa_dev[container].config_needed = NOTHING;
+                        channel = CONTAINER_TO_CHANNEL(container);
+                        id = CONTAINER_TO_ID(container);
+                        lun = CONTAINER_TO_LUN(container);
                         break;
                 }
         }
@@ -995,34 +1058,56 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
         /*
          * force reload of disk info via aac_probe_container
          */
-        if ((device_config_needed == CHANGE)
-         && (dev->fsa_dev[container].valid == 1))
-                dev->fsa_dev[container].valid = 2;
-        if ((device_config_needed == CHANGE) ||
-                        (device_config_needed == ADD))
+        if ((channel == CONTAINER_CHANNEL) &&
+          (device_config_needed != NOTHING)) {
+                if (dev->fsa_dev[container].valid == 1)
+                        dev->fsa_dev[container].valid = 2;
                 aac_probe_container(dev, container);
-        device = scsi_device_lookup(dev->scsi_host_ptr, 
-                CONTAINER_TO_CHANNEL(container), 
-                CONTAINER_TO_ID(container), 
-                CONTAINER_TO_LUN(container));
+        }
+        device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun);
         if (device) {
                 switch (device_config_needed) {
                 case DELETE:
+                        if (scsi_device_online(device)) {
+                                scsi_device_set_state(device, SDEV_OFFLINE);
+                                sdev_printk(KERN_INFO, device,
+                                        "Device offlined - %s\n",
+                                        (channel == CONTAINER_CHANNEL) ?
+                                                "array deleted" :
+                                                "enclosure services event");
+                        }
+                        break;
+                case ADD:
+                        if (!scsi_device_online(device)) {
+                                sdev_printk(KERN_INFO, device,
+                                        "Device online - %s\n",
+                                        (channel == CONTAINER_CHANNEL) ?
+                                                "array created" :
+                                                "enclosure services event");
+                                scsi_device_set_state(device, SDEV_RUNNING);
+                        }
+                        /* FALLTHRU */
                 case CHANGE:
+                        if ((channel == CONTAINER_CHANNEL)
+                         && (!dev->fsa_dev[container].valid)) {
+                                if (!scsi_device_online(device))
+                                        break;
+                                scsi_device_set_state(device, SDEV_OFFLINE);
+                                sdev_printk(KERN_INFO, device,
+                                        "Device offlined - %s\n",
+                                        "array failed");
+                                break;
+                        }
                         scsi_rescan_device(&device->sdev_gendev);
 
                 default:
                         break;
                 }
                 scsi_device_put(device);
+                device_config_needed = NOTHING;
         }
-        if (device_config_needed == ADD) {
-                scsi_add_device(dev->scsi_host_ptr,
-                  CONTAINER_TO_CHANNEL(container),
-                  CONTAINER_TO_ID(container),
-                  CONTAINER_TO_LUN(container));
-        }
-
+        if (device_config_needed == ADD)
+                scsi_add_device(dev->scsi_host_ptr, channel, id, lun);
 }
 
 static int _aac_reset_adapter(struct aac_dev *aac, int forced)
@@ -1099,7 +1184,8 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced)
         free_irq(aac->pdev->irq, aac);
         kfree(aac->fsa_dev);
         aac->fsa_dev = NULL;
-        if (aac_get_driver_ident(index)->quirks & AAC_QUIRK_31BIT) {
+        quirks = aac_get_driver_ident(index)->quirks;
+        if (quirks & AAC_QUIRK_31BIT) {
                 if (((retval = pci_set_dma_mask(aac->pdev, DMA_31BIT_MASK))) ||
                   ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_31BIT_MASK))))
                         goto out;
@@ -1110,7 +1196,7 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced)
         }
         if ((retval = (*(aac_get_driver_ident(index)->init))(aac)))
                 goto out;
-        if (aac_get_driver_ident(index)->quirks & AAC_QUIRK_31BIT)
+        if (quirks & AAC_QUIRK_31BIT)
                 if ((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK)))
                         goto out;
         if (jafo) {
@@ -1121,15 +1207,14 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced)
                 }
         }
         (void)aac_get_adapter_info(aac);
-        quirks = aac_get_driver_ident(index)->quirks;
         if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) {
-                host->sg_tablesize = 34;
-                host->max_sectors = (host->sg_tablesize * 8) + 112;
-        }
-        if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
-                host->sg_tablesize = 17;
-                host->max_sectors = (host->sg_tablesize * 8) + 112;
-        }
+                host->sg_tablesize = 34;
+                host->max_sectors = (host->sg_tablesize * 8) + 112;
+        }
+        if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
+                host->sg_tablesize = 17;
+                host->max_sectors = (host->sg_tablesize * 8) + 112;
+        }
         aac_get_config_status(aac, 1);
         aac_get_containers(aac);
         /*
@@ -1217,12 +1302,13 @@ int aac_reset_adapter(struct aac_dev * aac, int forced)
         }
 
         /* Quiesce build, flush cache, write through mode */
-        aac_send_shutdown(aac);
+        if (forced < 2)
+                aac_send_shutdown(aac);
         spin_lock_irqsave(host->host_lock, flagv);
-        retval = _aac_reset_adapter(aac, forced);
+        retval = _aac_reset_adapter(aac, forced ? forced : ((aac_check_reset != 0) && (aac_check_reset != 1)));
         spin_unlock_irqrestore(host->host_lock, flagv);
 
-        if (retval == -ENODEV) {
+        if ((forced < 2) && (retval == -ENODEV)) {
                 /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */
                 struct fib * fibctx = aac_fib_alloc(aac);
                 if (fibctx) {
@@ -1338,11 +1424,11 @@ int aac_check_health(struct aac_dev * aac)
                         fib->data = hw_fib->data;
                         aif = (struct aac_aifcmd *)hw_fib->data;
                         aif->command = cpu_to_le32(AifCmdEventNotify);
-                        aif->seqnum = cpu_to_le32(0xFFFFFFFF);
-                        aif->data[0] = AifEnExpEvent;
-                        aif->data[1] = AifExeFirmwarePanic;
-                        aif->data[2] = AifHighPriority;
-                        aif->data[3] = BlinkLED;
+                        aif->seqnum = cpu_to_le32(0xFFFFFFFF);
+                        ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent);
+                        ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic);
+                        ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority);
+                        ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED);
 
                         /*
                          * Put the FIB onto the
@@ -1372,14 +1458,14 @@ int aac_check_health(struct aac_dev * aac)
 
         printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
 
-        if (!aac_check_reset ||
+        if (!aac_check_reset || ((aac_check_reset != 1) &&
                 (aac->supplement_adapter_info.SupportedOptions2 &
-                        le32_to_cpu(AAC_OPTION_IGNORE_RESET)))
+                        AAC_OPTION_IGNORE_RESET)))
                 goto out;
         host = aac->scsi_host_ptr;
         if (aac->thread->pid != current->pid)
                 spin_lock_irqsave(host->host_lock, flagv);
-        BlinkLED = _aac_reset_adapter(aac, 0);
+        BlinkLED = _aac_reset_adapter(aac, aac_check_reset != 1);
         if (aac->thread->pid != current->pid)
                 spin_unlock_irqrestore(host->host_lock, flagv);
         return BlinkLED;
@@ -1399,7 +1485,7 @@ out:
  *      until the queue is empty. When the queue is empty it will wait for
  *      more FIBs.
  */
- 
+
 int aac_command_thread(void *data)
 {
         struct aac_dev *dev = data;
@@ -1425,30 +1511,29 @@ int aac_command_thread(void *data)
         add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
         set_current_state(TASK_INTERRUPTIBLE);
         dprintk ((KERN_INFO "aac_command_thread start\n"));
-        while(1) 
-        {
+        while (1) {
                 spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
                 while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) {
                         struct list_head *entry;
                         struct aac_aifcmd * aifcmd;
 
                         set_current_state(TASK_RUNNING);
-        
+
                         entry = dev->queues->queue[HostNormCmdQueue].cmdq.next;
                         list_del(entry);
-                
+
                         spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
                         fib = list_entry(entry, struct fib, fiblink);
                         /*
-                         *      We will process the FIB here or pass it to a 
-                         *      worker thread that is TBD. We Really can't 
+                         *      We will process the FIB here or pass it to a
+                         *      worker thread that is TBD. We Really can't
                          *      do anything at this point since we don't have
                          *      anything defined for this thread to do.
                          */
                         hw_fib = fib->hw_fib_va;
                         memset(fib, 0, sizeof(struct fib));
                         fib->type = FSAFS_NTC_FIB_CONTEXT;
-                        fib->size = sizeof( struct fib );
+                        fib->size = sizeof(struct fib);
                         fib->hw_fib_va = hw_fib;
                         fib->data = hw_fib->data;
                         fib->dev = dev;
@@ -1462,20 +1547,19 @@ int aac_command_thread(void *data)
                                 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
                                 aac_fib_adapter_complete(fib, (u16)sizeof(u32));
                         } else {
-                                struct list_head *entry;
                                 /* The u32 here is important and intended. We are using
                                    32bit wrapping time to fit the adapter field */
-                                   
+
                                 u32 time_now, time_last;
                                 unsigned long flagv;
                                 unsigned num;
                                 struct hw_fib ** hw_fib_pool, ** hw_fib_p;
                                 struct fib ** fib_pool, ** fib_p;
-                        
+
                                 /* Sniff events */
-                                if ((aifcmd->command == 
+                                if ((aifcmd->command ==
                                      cpu_to_le32(AifCmdEventNotify)) ||
-                                    (aifcmd->command == 
+                                    (aifcmd->command ==
                                      cpu_to_le32(AifCmdJobProgress))) {
                                         aac_handle_aif(dev, fib);
                                 }
@@ -1527,7 +1611,7 @@ int aac_command_thread(void *data)
                                 spin_lock_irqsave(&dev->fib_lock, flagv);
                                 entry = dev->fib_list.next;
                                 /*
-                                 * For each Context that is on the 
+                                 * For each Context that is on the
                                  * fibctxList, make a copy of the
                                  * fib, and then set the event to wake up the
                                  * thread that is waiting for it.
@@ -1552,7 +1636,7 @@ int aac_command_thread(void *data)
                                                  */
                                                 time_last = fibctx->jiffies;
                                                 /*
-                                                 * Has it been > 2 minutes 
+                                                 * Has it been > 2 minutes
                                                  * since the last read off
                                                  * the queue?
                                                  */
@@ -1583,7 +1667,7 @@ int aac_command_thread(void *data)
                                                  */
                                                 list_add_tail(&newfib->fiblink, &fibctx->fib_list);
                                                 fibctx->count++;
-                                                /* 
+                                                /*
                                                  * Set the event to wake up the
                                                  * thread that is waiting.
                                                  */
@@ -1655,11 +1739,11 @@ int aac_command_thread(void *data)
                                 struct fib *fibptr;
 
                                 if ((fibptr = aac_fib_alloc(dev))) {
-                                        u32 * info;
+                                        __le32 *info;
 
                                         aac_fib_init(fibptr);
 
-                                        info = (u32 *) fib_data(fibptr);
+                                        info = (__le32 *) fib_data(fibptr);
                                         if (now.tv_usec > 500000)
                                                 ++now.tv_sec;
 
diff --git a/drivers/scsi/aacraid/dpcsup.c b/drivers/scsi/aacraid/dpcsup.c
index e6032ffc66a6..d1163ded132b 100644
--- a/drivers/scsi/aacraid/dpcsup.c
+++ b/drivers/scsi/aacraid/dpcsup.c
@@ -120,6 +120,7 @@ unsigned int aac_response_normal(struct aac_queue * q)
                          *      NOTE:  we cannot touch the fib after this
                          *          call, because it may have been deallocated.
                          */
+                        fib->flags = 0;
                         fib->callback(fib->callback_data, fib);
                 } else {
                         unsigned long flagv;
@@ -229,11 +230,9 @@ unsigned int aac_command_normal(struct aac_queue *q)
  *      all QE there are and wake up all the waiters before exiting.
  */
 
-unsigned int aac_intr_normal(struct aac_dev * dev, u32 Index)
+unsigned int aac_intr_normal(struct aac_dev * dev, u32 index)
 {
-        u32 index = le32_to_cpu(Index);
-
-        dprintk((KERN_INFO "aac_intr_normal(%p,%x)\n", dev, Index));
+        dprintk((KERN_INFO "aac_intr_normal(%p,%x)\n", dev, index));
         if ((index & 0x00000002L)) {
                 struct hw_fib * hw_fib;
                 struct fib * fib;
@@ -301,7 +300,7 @@ unsigned int aac_intr_normal(struct aac_dev * dev, u32 Index)
 
                 if (hwfib->header.Command == cpu_to_le16(NuFileSystem))
                 {
-                        u32 *pstatus = (u32 *)hwfib->data;
+                        __le32 *pstatus = (__le32 *)hwfib->data;
                         if (*pstatus & cpu_to_le32(0xffff0000))
                                 *pstatus = cpu_to_le32(ST_OK);
                 }
@@ -315,6 +314,7 @@ unsigned int aac_intr_normal(struct aac_dev * dev, u32 Index)
                          *      NOTE:  we cannot touch the fib after this
                          *          call, because it may have been deallocated.
                          */
+                        fib->flags = 0;
                         fib->callback(fib->callback_data, fib);
                 } else {
                         unsigned long flagv;
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 9dd331bc29b0..61be22774e99 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -159,27 +159,27 @@ static struct pci_device_id aac_pci_tbl[] = {
 MODULE_DEVICE_TABLE(pci, aac_pci_tbl);
 
 /*
- * dmb - For now we add the number of channels to this structure.  
+ * dmb - For now we add the number of channels to this structure.
  * In the future we should add a fib that reports the number of channels
  * for the card.  At that time we can remove the channels from here
  */
 static struct aac_driver_ident aac_drivers[] = {
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 2/Si (Iguana/PERC2Si) */
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 3/Di (Opal/PERC3Di) */
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 3/Si (SlimFast/PERC3Si */
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 3/Di (Iguana FlipChip/PERC3DiF */
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 3/Di (Viper/PERC3DiV) */
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 3/Di (Lexus/PERC3DiL) */
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 3/Di (Jaguar/PERC3DiJ) */
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 3/Di (Dagger/PERC3DiD) */
-        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* PERC 3/Di (Boxster/PERC3DiB) */
-        { aac_rx_init, "aacraid",  "ADAPTEC ", "catapult        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* catapult */
-        { aac_rx_init, "aacraid",  "ADAPTEC ", "tomcat          ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* tomcat */
-        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2120S   ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Adaptec 2120S (Crusader) */
-        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Adaptec 2200S (Vulcan) */
-        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Adaptec 2200S (Vulcan-2m) */
-        { aac_rx_init, "aacraid",  "Legend  ", "Legend S220     ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Legend S220 (Legend Crusader) */
-        { aac_rx_init, "aacraid",  "Legend  ", "Legend S230     ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Legend S230 (Legend Vulcan) */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 2/Si (Iguana/PERC2Si) */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Opal/PERC3Di) */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Si (SlimFast/PERC3Si */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Iguana FlipChip/PERC3DiF */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Viper/PERC3DiV) */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Lexus/PERC3DiL) */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Jaguar/PERC3DiJ) */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Dagger/PERC3DiD) */
+        { aac_rx_init, "percraid", "DELL    ", "PERCRAID        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* PERC 3/Di (Boxster/PERC3DiB) */
+        { aac_rx_init, "aacraid",  "ADAPTEC ", "catapult        ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* catapult */
+        { aac_rx_init, "aacraid",  "ADAPTEC ", "tomcat          ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* tomcat */
+        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2120S   ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Adaptec 2120S (Crusader) */
+        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Adaptec 2200S (Vulcan) */
+        { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 2200S   ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Adaptec 2200S (Vulcan-2m) */
+        { aac_rx_init, "aacraid",  "Legend  ", "Legend S220     ", 1, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Legend S220 (Legend Crusader) */
+        { aac_rx_init, "aacraid",  "Legend  ", "Legend S230     ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Legend S230 (Legend Vulcan) */
 
         { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 3230S   ", 2 }, /* Adaptec 3230S (Harrier) */
         { aac_rx_init, "aacraid",  "ADAPTEC ", "Adaptec 3240S   ", 2 }, /* Adaptec 3240S (Tornado) */
@@ -224,8 +224,8 @@ static struct aac_driver_ident aac_drivers[] = {
         { aac_sa_init, "percraid", "DELL    ", "PERCRAID        ", 4, AAC_QUIRK_34SG }, /* Dell PERC2/QC */
         { aac_sa_init, "hpnraid",  "HP      ", "NetRAID         ", 4, AAC_QUIRK_34SG }, /* HP NetRAID-4M */
 
-        { aac_rx_init, "aacraid",  "DELL    ", "RAID            ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Dell Catchall */
-        { aac_rx_init, "aacraid",  "Legend  ", "RAID            ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG }, /* Legend Catchall */
+        { aac_rx_init, "aacraid",  "DELL    ", "RAID            ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Dell Catchall */
+        { aac_rx_init, "aacraid",  "Legend  ", "RAID            ", 2, AAC_QUIRK_31BIT | AAC_QUIRK_34SG | AAC_QUIRK_SCSI_32 }, /* Legend Catchall */
         { aac_rx_init, "aacraid",  "ADAPTEC ", "RAID            ", 2 }, /* Adaptec Catch All */
         { aac_rkt_init, "aacraid", "ADAPTEC ", "RAID            ", 2 }, /* Adaptec Rocket Catch All */
         { aac_nark_init, "aacraid", "ADAPTEC ", "RAID            ", 2 } /* Adaptec NEMER/ARK Catch All */
@@ -239,7 +239,7 @@ static struct aac_driver_ident aac_drivers[] = {
  *      Queues a command for execution by the associated Host Adapter.
  *
  *      TODO: unify with aac_scsi_cmd().
- */ 
+ */
 
 static int aac_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 {
@@ -258,7 +258,7 @@ static int aac_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd
         }
         cmd->SCp.phase = AAC_OWNER_LOWLEVEL;
         return (aac_scsi_cmd(cmd) ? FAILED : 0);
-} 
+}
 
 /**
  *      aac_info                -       Returns the host adapter name
@@ -292,21 +292,21 @@ struct aac_driver_ident* aac_get_driver_ident(int devtype)
  *      @capacity: the sector capacity of the disk
  *      @geom: geometry block to fill in
  *
- *      Return the Heads/Sectors/Cylinders BIOS Disk Parameters for Disk.  
- *      The default disk geometry is 64 heads, 32 sectors, and the appropriate 
- *      number of cylinders so as not to exceed drive capacity.  In order for 
+ *      Return the Heads/Sectors/Cylinders BIOS Disk Parameters for Disk.
+ *      The default disk geometry is 64 heads, 32 sectors, and the appropriate
+ *      number of cylinders so as not to exceed drive capacity.  In order for
  *      disks equal to or larger than 1 GB to be addressable by the BIOS
- *      without exceeding the BIOS limitation of 1024 cylinders, Extended 
- *      Translation should be enabled.   With Extended Translation enabled, 
- *      drives between 1 GB inclusive and 2 GB exclusive are given a disk 
- *      geometry of 128 heads and 32 sectors, and drives above 2 GB inclusive 
- *      are given a disk geometry of 255 heads and 63 sectors.  However, if 
- *      the BIOS detects that the Extended Translation setting does not match 
- *      the geometry in the partition table, then the translation inferred 
- *      from the partition table will be used by the BIOS, and a warning may 
+ *      without exceeding the BIOS limitation of 1024 cylinders, Extended
+ *      Translation should be enabled.   With Extended Translation enabled,
+ *      drives between 1 GB inclusive and 2 GB exclusive are given a disk
+ *      geometry of 128 heads and 32 sectors, and drives above 2 GB inclusive
+ *      are given a disk geometry of 255 heads and 63 sectors.  However, if
+ *      the BIOS detects that the Extended Translation setting does not match
+ *      the geometry in the partition table, then the translation inferred
+ *      from the partition table will be used by the BIOS, and a warning may
  *      be displayed.
  */
- 
+
 static int aac_biosparm(struct scsi_device *sdev, struct block_device *bdev,
                         sector_t capacity, int *geom)
 {
@@ -333,10 +333,10 @@ static int aac_biosparm(struct scsi_device *sdev, struct block_device *bdev,
 
         param->cylinders = cap_to_cyls(capacity, param->heads * param->sectors);
 
-        /* 
+        /*
          *      Read the first 1024 bytes from the disk device, if the boot
          *      sector partition table is valid, search for a partition table
-         *      entry whose end_head matches one of the standard geometry 
+         *      entry whose end_head matches one of the standard geometry
          *      translations ( 64/32, 128/32, 255/63 ).
          */
         buf = scsi_bios_ptable(bdev);
@@ -401,30 +401,44 @@ static int aac_biosparm(struct scsi_device *sdev, struct block_device *bdev,
 
 static int aac_slave_configure(struct scsi_device *sdev)
 {
+        struct aac_dev *aac = (struct aac_dev *)sdev->host->hostdata;
         if ((sdev->type == TYPE_DISK) &&
-                        (sdev_channel(sdev) != CONTAINER_CHANNEL)) {
+                        (sdev_channel(sdev) != CONTAINER_CHANNEL) &&
+                        (!aac->jbod || sdev->inq_periph_qual) &&
+                        (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))) {
                 if (expose_physicals == 0)
                         return -ENXIO;
-                if (expose_physicals < 0) {
-                        struct aac_dev *aac =
-                                (struct aac_dev *)sdev->host->hostdata;
-                        if (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))
-                                sdev->no_uld_attach = 1;
-                }
+                if (expose_physicals < 0)
+                        sdev->no_uld_attach = 1;
         }
         if (sdev->tagged_supported && (sdev->type == TYPE_DISK) &&
-                        (sdev_channel(sdev) == CONTAINER_CHANNEL)) {
+                        (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2)) &&
+                        !sdev->no_uld_attach) {
                 struct scsi_device * dev;
                 struct Scsi_Host *host = sdev->host;
                 unsigned num_lsu = 0;
                 unsigned num_one = 0;
                 unsigned depth;
+                unsigned cid;
 
+                /*
+                 * Firmware has an individual device recovery time typically
+                 * of 35 seconds, give us a margin.
+                 */
+                if (sdev->timeout < (45 * HZ))
+                        sdev->timeout = 45 * HZ;
+                for (cid = 0; cid < aac->maximum_num_containers; ++cid)
+                        if (aac->fsa_dev[cid].valid)
+                                ++num_lsu;
                 __shost_for_each_device(dev, host) {
                         if (dev->tagged_supported && (dev->type == TYPE_DISK) &&
-                                (sdev_channel(dev) == CONTAINER_CHANNEL))
-                                ++num_lsu;
-                        else
+                                        (!aac->raid_scsi_mode ||
+                                                (sdev_channel(sdev) != 2)) &&
+                                        !dev->no_uld_attach) {
+                                if ((sdev_channel(dev) != CONTAINER_CHANNEL)
+                                 || !aac->fsa_dev[sdev_id(dev)].valid)
+                                        ++num_lsu;
+                        } else
                                 ++num_one;
                 }
                 if (num_lsu == 0)
@@ -481,9 +495,35 @@ static int aac_change_queue_depth(struct scsi_device *sdev, int depth)
         return sdev->queue_depth;
 }
 
+static ssize_t aac_show_raid_level(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct scsi_device * sdev = to_scsi_device(dev);
+        if (sdev_channel(sdev) != CONTAINER_CHANNEL)
+                return snprintf(buf, PAGE_SIZE, sdev->no_uld_attach
+                  ? "Hidden\n" : "JBOD");
+        return snprintf(buf, PAGE_SIZE, "%s\n",
+          get_container_type(((struct aac_dev *)(sdev->host->hostdata))
+            ->fsa_dev[sdev_id(sdev)].type));
+}
+
+static struct device_attribute aac_raid_level_attr = {
+        .attr = {
+                .name = "level",
+                .mode = S_IRUGO,
+        },
+        .show = aac_show_raid_level
+};
+
+static struct device_attribute *aac_dev_attrs[] = {
+        &aac_raid_level_attr,
+        NULL,
+};
+
 static int aac_ioctl(struct scsi_device *sdev, int cmd, void __user * arg)
 {
         struct aac_dev *dev = (struct aac_dev *)sdev->host->hostdata;
+        if (!capable(CAP_SYS_RAWIO))
+                return -EPERM;
         return aac_do_ioctl(dev, cmd, arg);
 }
 
@@ -506,17 +546,33 @@ static int aac_eh_abort(struct scsi_cmnd* cmd)
                         break;
         case INQUIRY:
         case READ_CAPACITY:
-        case TEST_UNIT_READY:
                 /* Mark associated FIB to not complete, eh handler does this */
                 for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) {
                         struct fib * fib = &aac->fibs[count];
                         if (fib->hw_fib_va->header.XferState &&
+                          (fib->flags & FIB_CONTEXT_FLAG) &&
                           (fib->callback_data == cmd)) {
                                 fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT;
                                 cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER;
                                 ret = SUCCESS;
                         }
                 }
+                break;
+        case TEST_UNIT_READY:
+                /* Mark associated FIB to not complete, eh handler does this */
+                for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) {
+                        struct scsi_cmnd * command;
+                        struct fib * fib = &aac->fibs[count];
+                        if ((fib->hw_fib_va->header.XferState & cpu_to_le32(Async | NoResponseExpected)) &&
+                          (fib->flags & FIB_CONTEXT_FLAG) &&
+                          ((command = fib->callback_data)) &&
+                          (command->device == cmd->device)) {
+                                fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT;
+                                command->SCp.phase = AAC_OWNER_ERROR_HANDLER;
+                                if (command == cmd)
+                                        ret = SUCCESS;
+                        }
+                }
         }
         return ret;
 }
@@ -539,12 +595,13 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
         for (count = 0; count < (host->can_queue + AAC_NUM_MGT_FIB); ++count) {
                 struct fib * fib = &aac->fibs[count];
                 if (fib->hw_fib_va->header.XferState &&
+                  (fib->flags & FIB_CONTEXT_FLAG) &&
                   (fib->callback_data == cmd)) {
                         fib->flags |= FIB_CONTEXT_FLAG_TIMED_OUT;
                         cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER;
                 }
         }
-        printk(KERN_ERR "%s: Host adapter reset request. SCSI hang ?\n", 
+        printk(KERN_ERR "%s: Host adapter reset request. SCSI hang ?\n",
                                         AAC_DRIVERNAME);
 
         if ((count = aac_check_health(aac)))
@@ -584,8 +641,11 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
          * support a register, instead of a commanded, reset.
          */
         if ((aac->supplement_adapter_info.SupportedOptions2 &
-          le32_to_cpu(AAC_OPTION_MU_RESET|AAC_OPTION_IGNORE_RESET)) ==
-          le32_to_cpu(AAC_OPTION_MU_RESET))
+           AAC_OPTION_MU_RESET) &&
+          aac_check_reset &&
+          ((aac_check_reset != 1) ||
+           (aac->supplement_adapter_info.SupportedOptions2 &
+            AAC_OPTION_IGNORE_RESET)))
                 aac_reset_adapter(aac, 2); /* Bypass wait for command quiesce */
         return SUCCESS; /* Cause an immediate retry of the command with a ten second delay after successful tur */
 }
@@ -632,8 +692,8 @@ static int aac_cfg_open(struct inode *inode, struct file *file)
  *      Bugs: Needs locking against parallel ioctls lower down
  *      Bugs: Needs to handle hot plugging
  */
- 
-static int aac_cfg_ioctl(struct inode *inode,  struct file *file,
+
+static int aac_cfg_ioctl(struct inode *inode, struct file *file,
                 unsigned int cmd, unsigned long arg)
 {
         if (!capable(CAP_SYS_RAWIO))
@@ -646,7 +706,7 @@ static long aac_compat_do_ioctl(struct aac_dev *dev, unsigned cmd, unsigned long
 {
         long ret;
         lock_kernel();
-        switch (cmd) { 
+        switch (cmd) {
         case FSACTL_MINIPORT_REV_CHECK:
         case FSACTL_SENDFIB:
         case FSACTL_OPEN_GET_ADAPTER_FIB:
@@ -656,14 +716,14 @@ static long aac_compat_do_ioctl(struct aac_dev *dev, unsigned cmd, unsigned long
         case FSACTL_QUERY_DISK:
         case FSACTL_DELETE_DISK:
         case FSACTL_FORCE_DELETE_DISK:
-        case FSACTL_GET_CONTAINERS: 
+        case FSACTL_GET_CONTAINERS:
         case FSACTL_SEND_LARGE_FIB:
                 ret = aac_do_ioctl(dev, cmd, (void __user *)arg);
                 break;
 
         case FSACTL_GET_NEXT_ADAPTER_FIB: {
                 struct fib_ioctl __user *f;
-                
+
                 f = compat_alloc_user_space(sizeof(*f));
                 ret = 0;
                 if (clear_user(f, sizeof(*f)))
@@ -676,9 +736,9 @@ static long aac_compat_do_ioctl(struct aac_dev *dev, unsigned cmd, unsigned long
         }
 
         default:
-                ret = -ENOIOCTLCMD; 
+                ret = -ENOIOCTLCMD;
                 break;
-        } 
+        }
         unlock_kernel();
         return ret;
 }
@@ -735,6 +795,25 @@ static ssize_t aac_show_vendor(struct class_device *class_dev,
         return len;
 }
 
+static ssize_t aac_show_flags(struct class_device *class_dev, char *buf)
+{
+        int len = 0;
+        struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
+
+        if (nblank(dprintk(x)))
+                len = snprintf(buf, PAGE_SIZE, "dprintk\n");
+#ifdef AAC_DETAILED_STATUS_INFO
+        len += snprintf(buf + len, PAGE_SIZE - len,
+                        "AAC_DETAILED_STATUS_INFO\n");
+#endif
+        if (dev->raw_io_interface && dev->raw_io_64)
+                len += snprintf(buf + len, PAGE_SIZE - len,
+                                "SAI_READ_CAPACITY_16\n");
+        if (dev->jbod)
+                len += snprintf(buf + len, PAGE_SIZE - len, "SUPPORTED_JBOD\n");
+        return len;
+}
+
 static ssize_t aac_show_kernel_version(struct class_device *class_dev,
                 char *buf)
 {
@@ -742,7 +821,7 @@ static ssize_t aac_show_kernel_version(struct class_device *class_dev,
         int len, tmp;
 
         tmp = le32_to_cpu(dev->adapter_info.kernelrev);
-        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", 
+        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n",
           tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
           le32_to_cpu(dev->adapter_info.kernelbuild));
         return len;
@@ -755,7 +834,7 @@ static ssize_t aac_show_monitor_version(struct class_device *class_dev,
         int len, tmp;
 
         tmp = le32_to_cpu(dev->adapter_info.monitorrev);
-        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", 
+        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n",
           tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
           le32_to_cpu(dev->adapter_info.monitorbuild));
         return len;
@@ -768,7 +847,7 @@ static ssize_t aac_show_bios_version(struct class_device *class_dev,
         int len, tmp;
 
         tmp = le32_to_cpu(dev->adapter_info.biosrev);
-        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", 
+        len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n",
           tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff,
           le32_to_cpu(dev->adapter_info.biosbuild));
         return len;
@@ -844,6 +923,13 @@ static struct class_device_attribute aac_vendor = {
         },
         .show = aac_show_vendor,
 };
+static struct class_device_attribute aac_flags = {
+        .attr = {
+                .name = "flags",
+                .mode = S_IRUGO,
+        },
+        .show = aac_show_flags,
+};
 static struct class_device_attribute aac_kernel_version = {
         .attr = {
                 .name = "hba_kernel_version",
@@ -898,6 +984,7 @@ static struct class_device_attribute aac_reset = {
 static struct class_device_attribute *aac_attrs[] = {
         &aac_model,
         &aac_vendor,
+        &aac_flags,
         &aac_kernel_version,
         &aac_monitor_version,
         &aac_bios_version,
@@ -928,21 +1015,22 @@ static struct scsi_host_template aac_driver_template = {
         .compat_ioctl                   = aac_compat_ioctl,
 #endif
         .queuecommand                   = aac_queuecommand,
-        .bios_param                     = aac_biosparm, 
+        .bios_param                     = aac_biosparm,
         .shost_attrs                    = aac_attrs,
         .slave_configure                = aac_slave_configure,
         .change_queue_depth             = aac_change_queue_depth,
+        .sdev_attrs                     = aac_dev_attrs,
         .eh_abort_handler               = aac_eh_abort,
         .eh_host_reset_handler          = aac_eh_reset,
-        .can_queue                      = AAC_NUM_IO_FIB,       
+        .can_queue                      = AAC_NUM_IO_FIB,
         .this_id                        = MAXIMUM_NUM_CONTAINERS,
         .sg_tablesize                   = 16,
         .max_sectors                    = 128,
 #if (AAC_NUM_IO_FIB > 256)
         .cmd_per_lun                    = 256,
-#else           
-        .cmd_per_lun                    = AAC_NUM_IO_FIB, 
-#endif  
+#else
+        .cmd_per_lun                    = AAC_NUM_IO_FIB,
+#endif
         .use_clustering                 = ENABLE_CLUSTERING,
         .use_sg_chaining                = ENABLE_SG_CHAINING,
         .emulated                       = 1,
@@ -979,18 +1067,18 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
                 goto out;
         error = -ENODEV;
 
-        if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) || 
+        if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) ||
                         pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
                 goto out_disable_pdev;
         /*
          * If the quirk31 bit is set, the adapter needs adapter
          * to driver communication memory to be allocated below 2gig
          */
-        if (aac_drivers[index].quirks & AAC_QUIRK_31BIT) 
+        if (aac_drivers[index].quirks & AAC_QUIRK_31BIT)
                 if (pci_set_dma_mask(pdev, DMA_31BIT_MASK) ||
                                 pci_set_consistent_dma_mask(pdev, DMA_31BIT_MASK))
                         goto out_disable_pdev;
-        
+
         pci_set_master(pdev);
 
         shost = scsi_host_alloc(&aac_driver_template, sizeof(struct aac_dev));
@@ -1003,7 +1091,7 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
         shost->max_cmd_len = 16;
 
         aac = (struct aac_dev *)shost->hostdata;
-        aac->scsi_host_ptr = shost;     
+        aac->scsi_host_ptr = shost;
         aac->pdev = pdev;
         aac->name = aac_driver_template.name;
         aac->id = shost->unique_id;
@@ -1040,7 +1128,7 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
         if (aac_drivers[index].quirks & AAC_QUIRK_31BIT)
                 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK))
                         goto out_deinit;
- 
+
         aac->maximum_num_channels = aac_drivers[index].channels;
         error = aac_get_adapter_info(aac);
         if (error < 0)
@@ -1049,7 +1137,7 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
         /*
          * Lets override negotiations and drop the maximum SG limit to 34
          */
-        if ((aac_drivers[index].quirks & AAC_QUIRK_34SG) && 
+        if ((aac_drivers[index].quirks & AAC_QUIRK_34SG) &&
                         (aac->scsi_host_ptr->sg_tablesize > 34)) {
                 aac->scsi_host_ptr->sg_tablesize = 34;
                 aac->scsi_host_ptr->max_sectors
@@ -1066,17 +1154,17 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
         /*
          * Firware printf works only with older firmware.
          */
-        if (aac_drivers[index].quirks & AAC_QUIRK_34SG) 
+        if (aac_drivers[index].quirks & AAC_QUIRK_34SG)
                 aac->printf_enabled = 1;
         else
                 aac->printf_enabled = 0;
- 
+
         /*
          * max channel will be the physical channels plus 1 virtual channel
          * all containers are on the virtual channel 0 (CONTAINER_CHANNEL)
          * physical channels are address by their actual physical number+1
          */
-        if ((aac->nondasd_support == 1) || expose_physicals)
+        if (aac->nondasd_support || expose_physicals || aac->jbod)
                 shost->max_channel = aac->maximum_num_channels;
         else
                 shost->max_channel = 0;
@@ -1148,10 +1236,10 @@ static void __devexit aac_remove_one(struct pci_dev *pdev)
         kfree(aac->queues);
 
         aac_adapter_ioremap(aac, 0);
-        
+
         kfree(aac->fibs);
         kfree(aac->fsa_dev);
-        
+
         list_del(&aac->entry);
         scsi_host_put(shost);
         pci_disable_device(pdev);
@@ -1172,7 +1260,7 @@ static struct pci_driver aac_pci_driver = {
 static int __init aac_init(void)
 {
         int error;
-        
+
         printk(KERN_INFO "Adaptec %s driver %s\n",
           AAC_DRIVERNAME, aac_driver_version);
 
diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c
index 73eef3dc5dc6..a08bbf1fd76c 100644
--- a/drivers/scsi/aacraid/rx.c
+++ b/drivers/scsi/aacraid/rx.c
@@ -465,7 +465,7 @@ static int aac_rx_restart_adapter(struct aac_dev *dev, int bled)
         u32 var;
 
         if (!(dev->supplement_adapter_info.SupportedOptions2 &
-          le32_to_cpu(AAC_OPTION_MU_RESET)) || (bled >= 0) || (bled == -2)) {
+          AAC_OPTION_MU_RESET) || (bled >= 0) || (bled == -2)) {
                 if (bled)
                         printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
                                 dev->name, dev->id, bled);
@@ -549,7 +549,9 @@ int _aac_rx_init(struct aac_dev *dev)
         dev->OIMR = status = rx_readb (dev, MUnit.OIMR);
         if ((((status & 0x0c) != 0x0c) || aac_reset_devices || reset_devices) &&
           !aac_rx_restart_adapter(dev, 0))
-                ++restart;
+                /* Make sure the Hardware FIFO is empty */
+                while ((++restart < 512) &&
+                  (rx_readl(dev, MUnit.OutboundQueue) != 0xFFFFFFFFL));
         /*
          *      Check to see if the board panic'd while booting.
          */
diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
index 38a1ee2eacd8..374ed025dc5a 100644
--- a/drivers/scsi/advansys.c
+++ b/drivers/scsi/advansys.c
@@ -8233,7 +8233,7 @@ static void adv_isr_callback(ADV_DVC_VAR *adv_dvc_varp, ADV_SCSI_REQ_Q *scsiqp)
                         if (scsiqp->scsi_status == SAM_STAT_CHECK_CONDITION) {
                                 ASC_DBG(2, "SAM_STAT_CHECK_CONDITION\n");
                                 ASC_DBG_PRT_SENSE(2, scp->sense_buffer,
-                                                  sizeof(scp->sense_buffer));
+                                                  SCSI_SENSE_BUFFERSIZE);
                                 /*
                                  * Note: The 'status_byte()' macro used by
                                  * target drivers defined in scsi.h shifts the
@@ -9136,7 +9136,7 @@ static void asc_isr_callback(ASC_DVC_VAR *asc_dvc_varp, ASC_QDONE_INFO *qdonep)
         BUG_ON(asc_dvc_varp != &boardp->dvc_var.asc_dvc_var);
 
         dma_unmap_single(boardp->dev, scp->SCp.dma_handle,
-                        sizeof(scp->sense_buffer), DMA_FROM_DEVICE);
+                         SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
         /*
          * 'qdonep' contains the command's ending status.
          */
@@ -9166,7 +9166,7 @@ static void asc_isr_callback(ASC_DVC_VAR *asc_dvc_varp, ASC_QDONE_INFO *qdonep)
                         if (qdonep->d3.scsi_stat == SAM_STAT_CHECK_CONDITION) {
                                 ASC_DBG(2, "SAM_STAT_CHECK_CONDITION\n");
                                 ASC_DBG_PRT_SENSE(2, scp->sense_buffer,
-                                                  sizeof(scp->sense_buffer));
+                                                  SCSI_SENSE_BUFFERSIZE);
                                 /*
                                  * Note: The 'status_byte()' macro used by
                                  * target drivers defined in scsi.h shifts the
@@ -9881,9 +9881,9 @@ static __le32 advansys_get_sense_buffer_dma(struct scsi_cmnd *scp)
 {
         struct asc_board *board = shost_priv(scp->device->host);
         scp->SCp.dma_handle = dma_map_single(board->dev, scp->sense_buffer,
-                                sizeof(scp->sense_buffer), DMA_FROM_DEVICE);
+                                             SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
         dma_cache_sync(board->dev, scp->sense_buffer,
-                                sizeof(scp->sense_buffer), DMA_FROM_DEVICE);
+                       SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
         return cpu_to_le32(scp->SCp.dma_handle);
 }
 
@@ -9914,7 +9914,7 @@ static int asc_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
         asc_scsi_q->q2.target_ix =
             ASC_TIDLUN_TO_IX(scp->device->id, scp->device->lun);
         asc_scsi_q->q1.sense_addr = advansys_get_sense_buffer_dma(scp);
-        asc_scsi_q->q1.sense_len = sizeof(scp->sense_buffer);
+        asc_scsi_q->q1.sense_len = SCSI_SENSE_BUFFERSIZE;
 
         /*
          * If there are any outstanding requests for the current target,
@@ -10173,7 +10173,7 @@ adv_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
         scsiqp->target_lun = scp->device->lun;
 
         scsiqp->sense_addr = cpu_to_le32(virt_to_bus(&scp->sense_buffer[0]));
-        scsiqp->sense_len = sizeof(scp->sense_buffer);
+        scsiqp->sense_len = SCSI_SENSE_BUFFERSIZE;
 
         /* Build ADV_SCSI_REQ_Q */
 
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index ea8c69947644..6ccdc96cc480 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -260,6 +260,7 @@
 #include <scsi/scsi_dbg.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport_spi.h>
+#include <scsi/scsi_eh.h>
 #include "aha152x.h"
 
 static LIST_HEAD(aha152x_host_list);
@@ -558,9 +559,7 @@ struct aha152x_hostdata {
 struct aha152x_scdata {
         Scsi_Cmnd *next;        /* next sc in queue */
         struct completion *done;/* semaphore to block on */
-        unsigned char aha_orig_cmd_len;
-        unsigned char aha_orig_cmnd[MAX_COMMAND_SIZE];
-        int aha_orig_resid;
+        struct scsi_eh_save ses;
 };
 
 /* access macros for hostdata */
@@ -1017,16 +1016,10 @@ static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete,
            SCp.buffers_residual : left buffers in list
            SCp.phase            : current state of the command */
 
-        if ((phase & (check_condition|resetting)) || !scsi_sglist(SCpnt)) {
-                if (phase & check_condition) {
-                        SCpnt->SCp.ptr           = SCpnt->sense_buffer;
-                        SCpnt->SCp.this_residual = sizeof(SCpnt->sense_buffer);
-                        scsi_set_resid(SCpnt, sizeof(SCpnt->sense_buffer));
-                } else {
-                        SCpnt->SCp.ptr           = NULL;
-                        SCpnt->SCp.this_residual = 0;
-                        scsi_set_resid(SCpnt, 0);
-                }
+        if ((phase & resetting) || !scsi_sglist(SCpnt)) {
+                SCpnt->SCp.ptr           = NULL;
+                SCpnt->SCp.this_residual = 0;
+                scsi_set_resid(SCpnt, 0);
                 SCpnt->SCp.buffer           = NULL;
                 SCpnt->SCp.buffers_residual = 0;
         } else {
@@ -1561,10 +1554,7 @@ static void busfree_run(struct Scsi_Host *shpnt)
                         }
 #endif
 
-                        /* restore old command */
-                        memcpy(cmd->cmnd, sc->aha_orig_cmnd, sizeof(cmd->cmnd));
-                        cmd->cmd_len = sc->aha_orig_cmd_len;
-                        scsi_set_resid(cmd, sc->aha_orig_resid);
+                        scsi_eh_restore_cmnd(cmd, &sc->ses);
 
                         cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
 
@@ -1587,22 +1577,10 @@ static void busfree_run(struct Scsi_Host *shpnt)
                                 DPRINTK(debug_eh, ERR_LEAD "requesting sense\n", CMDINFO(ptr));
 #endif
 
-                                /* save old command */
                                 sc = SCDATA(ptr);
                                 /* It was allocated in aha152x_internal_queue? */
                                 BUG_ON(!sc);
-                                memcpy(sc->aha_orig_cmnd, ptr->cmnd,
-                                                            sizeof(ptr->cmnd));
-                                sc->aha_orig_cmd_len = ptr->cmd_len;
-                                sc->aha_orig_resid = scsi_get_resid(ptr);
-
-                                ptr->cmnd[0]         = REQUEST_SENSE;
-                                ptr->cmnd[1]         = 0;
-                                ptr->cmnd[2]         = 0;
-                                ptr->cmnd[3]         = 0;
-                                ptr->cmnd[4]         = sizeof(ptr->sense_buffer);
-                                ptr->cmnd[5]         = 0;
-                                ptr->cmd_len         = 6;
+                                scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);
 
                                 DO_UNLOCK(flags);
                                 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c
index bbcc2c52d79f..190568ebea3c 100644
--- a/drivers/scsi/aha1542.c
+++ b/drivers/scsi/aha1542.c
@@ -51,15 +51,6 @@
 #define SCSI_BUF_PA(address)    isa_virt_to_bus(address)
 #define SCSI_SG_PA(sgent)       (isa_page_to_bus(sg_page((sgent))) + (sgent)->offset)
 
-static void BAD_DMA(void *address, unsigned int length)
-{
-        printk(KERN_CRIT "buf vaddress %p paddress 0x%lx length %d\n",
-               address,
-               SCSI_BUF_PA(address),
-               length);
-        panic("Buffer at physical address > 16Mb used for aha1542");
-}
-
 static void BAD_SG_DMA(Scsi_Cmnd * SCpnt,
                        struct scatterlist *sgp,
                        int nseg,
@@ -545,7 +536,7 @@ static void aha1542_intr_handle(struct Scsi_Host *shost, void *dev_id)
                    we will still have it in the cdb when we come back */
                 if (ccb[mbo].tarstat == 2)
                         memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen],
-                               sizeof(SCtmp->sense_buffer));
+                               SCSI_SENSE_BUFFERSIZE);
 
 
                 /* is there mail :-) */
@@ -597,8 +588,7 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
         unchar target = SCpnt->device->id;
         unchar lun = SCpnt->device->lun;
         unsigned long flags;
-        void *buff = SCpnt->request_buffer;
-        int bufflen = SCpnt->request_bufflen;
+        int bufflen = scsi_bufflen(SCpnt);
         int mbo;
         struct mailbox *mb;
         struct ccb *ccb;
@@ -619,7 +609,7 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
 #if 0
                 /* scsi_request_sense() provides a buffer of size 256,
                    so there is no reason to expect equality */
-                if (bufflen != sizeof(SCpnt->sense_buffer))
+                if (bufflen != SCSI_SENSE_BUFFERSIZE)
                         printk(KERN_CRIT "aha1542: Wrong buffer length supplied "
                                "for request sense (%d)\n", bufflen);
 #endif
@@ -689,42 +679,29 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
 
         memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen);
 
-        if (SCpnt->use_sg) {
+        if (bufflen) {
                 struct scatterlist *sg;
                 struct chain *cptr;
 #ifdef DEBUG
                 unsigned char *ptr;
 #endif
-                int i;
+                int i, sg_count = scsi_sg_count(SCpnt);
                 ccb[mbo].op = 2;        /* SCSI Initiator Command  w/scatter-gather */
-                SCpnt->host_scribble = kmalloc(512, GFP_KERNEL | GFP_DMA);
+                SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count,
+                                                         GFP_KERNEL | GFP_DMA);
                 cptr = (struct chain *) SCpnt->host_scribble;
                 if (cptr == NULL) {
                         /* free the claimed mailbox slot */
                         HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL;
                         return SCSI_MLQUEUE_HOST_BUSY;
                 }
-                scsi_for_each_sg(SCpnt, sg, SCpnt->use_sg, i) {
-                        if (sg->length == 0 || SCpnt->use_sg > 16 ||
-                            (((int) sg->offset) & 1) || (sg->length & 1)) {
-                                unsigned char *ptr;
-                                printk(KERN_CRIT "Bad segment list supplied to aha1542.c (%d, %d)\n", SCpnt->use_sg, i);
-                                scsi_for_each_sg(SCpnt, sg, SCpnt->use_sg, i) {
-                                        printk(KERN_CRIT "%d: %p %d\n", i,
-                                               sg_virt(sg), sg->length);
-                                };
-                                printk(KERN_CRIT "cptr %x: ", (unsigned int) cptr);
-                                ptr = (unsigned char *) &cptr[i];
-                                for (i = 0; i < 18; i++)
-                                        printk("%02x ", ptr[i]);
-                                panic("Foooooooood fight!");
-                        };
+                scsi_for_each_sg(SCpnt, sg, sg_count, i) {
                         any2scsi(cptr[i].dataptr, SCSI_SG_PA(sg));
                         if (SCSI_SG_PA(sg) + sg->length - 1 > ISA_DMA_THRESHOLD)
-                                BAD_SG_DMA(SCpnt, sg, SCpnt->use_sg, i);
+                                BAD_SG_DMA(SCpnt, scsi_sglist(SCpnt), sg_count, i);
                         any2scsi(cptr[i].datalen, sg->length);
                 };
-                any2scsi(ccb[mbo].datalen, SCpnt->use_sg * sizeof(struct chain));
+                any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain));
                 any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr));
 #ifdef DEBUG
                 printk("cptr %x: ", cptr);
@@ -735,10 +712,8 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
         } else {
                 ccb[mbo].op = 0;        /* SCSI Initiator Command */
                 SCpnt->host_scribble = NULL;
-                any2scsi(ccb[mbo].datalen, bufflen);
-                if (buff && SCSI_BUF_PA(buff + bufflen - 1) > ISA_DMA_THRESHOLD)
-                        BAD_DMA(buff, bufflen);
-                any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(buff));
+                any2scsi(ccb[mbo].datalen, 0);
+                any2scsi(ccb[mbo].dataptr, 0);
         };
         ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7);     /*SCSI Target Id */
         ccb[mbo].rsalen = 16;
diff --git a/drivers/scsi/aha1740.c b/drivers/scsi/aha1740.c
index f6722fd46008..be58a0b097c7 100644
--- a/drivers/scsi/aha1740.c
+++ b/drivers/scsi/aha1740.c
@@ -286,7 +286,7 @@ static irqreturn_t aha1740_intr_handle(int irq, void *dev_id)
                            cdb when we come back */
                         if ( (adapstat & G2INTST_MASK) == G2INTST_CCBERROR ) {
                                 memcpy(SCtmp->sense_buffer, ecbptr->sense, 
-                                       sizeof(SCtmp->sense_buffer));
+                                       SCSI_SENSE_BUFFERSIZE);
                                 errstatus = aha1740_makecode(ecbptr->sense,ecbptr->status);
                         } else
                                 errstatus = 0;
diff --git a/drivers/scsi/aic7xxx/Makefile b/drivers/scsi/aic7xxx/Makefile
index 9a6ce19a4030..e4f70c563bc2 100644
--- a/drivers/scsi/aic7xxx/Makefile
+++ b/drivers/scsi/aic7xxx/Makefile
@@ -33,11 +33,10 @@ aic79xx-y					+= aic79xx_osm.o	\
                                                    aic79xx_proc.o       \
                                                    aic79xx_osm_pci.o
 
-EXTRA_CFLAGS += -Idrivers/scsi
+ccflags-y += -Idrivers/scsi
 ifdef WARNINGS_BECOME_ERRORS
-EXTRA_CFLAGS += -Werror
+ccflags-y += -Werror
 endif
-#EXTRA_CFLAGS += -g
 
 # Files generated that shall be removed upon make clean
 clean-files := aic7xxx_seq.h aic7xxx_reg.h aic7xxx_reg_print.c
@@ -46,53 +45,45 @@ clean-files += aic79xx_seq.h aic79xx_reg.h aic79xx_reg_print.c
 # Dependencies for generated files need to be listed explicitly
 
 $(obj)/aic7xxx_core.o: $(obj)/aic7xxx_seq.h
+$(obj)/aic7xxx_core.o: $(obj)/aic7xxx_reg.h
 $(obj)/aic79xx_core.o: $(obj)/aic79xx_seq.h
-$(obj)/aic79xx_reg_print.c: $(src)/aic79xx_reg_print.c_shipped
-$(obj)/aic7xxx_reg_print.c: $(src)/aic7xxx_reg_print.c_shipped
+$(obj)/aic79xx_core.o: $(obj)/aic79xx_reg.h
 
-$(addprefix $(obj)/,$(aic7xxx-y)): $(obj)/aic7xxx_reg.h
-$(addprefix $(obj)/,$(aic79xx-y)): $(obj)/aic79xx_reg.h
+$(addprefix $(obj)/,$(aic7xxx-y)): $(obj)/aic7xxx_seq.h
+$(addprefix $(obj)/,$(aic79xx-y)): $(obj)/aic79xx_seq.h
 
-aic7xxx-gen-$(CONFIG_AIC7XXX_BUILD_FIRMWARE)    := $(obj)/aic7xxx_seq.h \
-                                                   $(obj)/aic7xxx_reg.h
+aic7xxx-gen-$(CONFIG_AIC7XXX_BUILD_FIRMWARE)    := $(obj)/aic7xxx_reg.h
 aic7xxx-gen-$(CONFIG_AIC7XXX_REG_PRETTY_PRINT)  += $(obj)/aic7xxx_reg_print.c
 
 aicasm-7xxx-opts-$(CONFIG_AIC7XXX_REG_PRETTY_PRINT) := \
         -p $(obj)/aic7xxx_reg_print.c -i aic7xxx_osm.h
 
 ifeq ($(CONFIG_AIC7XXX_BUILD_FIRMWARE),y)
-# Create a dependency chain in generated files
-# to avoid concurrent invocations of the single
-# rule that builds them all.
-aic7xxx_seq.h: aic7xxx_reg.h
-ifeq ($(CONFIG_AIC7XXX_REG_PRETTY_PRINT),y)
-aic7xxx_reg.h: aic7xxx_reg_print.c
-endif
-$(aic7xxx-gen-y): $(src)/aic7xxx.seq $(src)/aic7xxx.reg $(obj)/aicasm/aicasm
+$(obj)/aic7xxx_seq.h: $(src)/aic7xxx.seq $(src)/aic7xxx.reg $(obj)/aicasm/aicasm
         $(obj)/aicasm/aicasm -I$(src) -r $(obj)/aic7xxx_reg.h \
                               $(aicasm-7xxx-opts-y) -o $(obj)/aic7xxx_seq.h \
                               $(src)/aic7xxx.seq
+
+$(aic7xxx-gen-y): $(obj)/aic7xxx_seq.h
+else
+$(obj)/aic7xxx_reg_print.c: $(src)/aic7xxx_reg_print.c_shipped
 endif
 
-aic79xx-gen-$(CONFIG_AIC79XX_BUILD_FIRMWARE)    := $(obj)/aic79xx_seq.h \
-                                                   $(obj)/aic79xx_reg.h
+aic79xx-gen-$(CONFIG_AIC79XX_BUILD_FIRMWARE)    := $(obj)/aic79xx_reg.h
 aic79xx-gen-$(CONFIG_AIC79XX_REG_PRETTY_PRINT)  += $(obj)/aic79xx_reg_print.c
 
 aicasm-79xx-opts-$(CONFIG_AIC79XX_REG_PRETTY_PRINT) := \
         -p $(obj)/aic79xx_reg_print.c -i aic79xx_osm.h
 
 ifeq ($(CONFIG_AIC79XX_BUILD_FIRMWARE),y)
-# Create a dependency chain in generated files
-# to avoid concurrent invocations of the single
-# rule that builds them all.
-aic79xx_seq.h: aic79xx_reg.h
-ifeq ($(CONFIG_AIC79XX_REG_PRETTY_PRINT),y)
-aic79xx_reg.h: aic79xx_reg_print.c
-endif
-$(aic79xx-gen-y): $(src)/aic79xx.seq $(src)/aic79xx.reg $(obj)/aicasm/aicasm
+$(obj)/aic79xx_seq.h: $(src)/aic79xx.seq $(src)/aic79xx.reg $(obj)/aicasm/aicasm
         $(obj)/aicasm/aicasm -I$(src) -r $(obj)/aic79xx_reg.h \
                               $(aicasm-79xx-opts-y) -o $(obj)/aic79xx_seq.h \
                               $(src)/aic79xx.seq
+
+$(aic79xx-gen-y): $(obj)/aic79xx_seq.h
+else
+$(obj)/aic79xx_reg_print.c: $(src)/aic79xx_reg_print.c_shipped
 endif
 
 $(obj)/aicasm/aicasm: $(src)/aicasm/*.[chyl]
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 2d020405480c..0e4708fd43c8 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -1784,7 +1784,7 @@ ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
                         if (scb->flags & SCB_SENSE) {
                                 sense_size = min(sizeof(struct scsi_sense_data)
                                                - ahd_get_sense_residual(scb),
-                                                 (u_long)sizeof(cmd->sense_buffer));
+                                                 (u_long)SCSI_SENSE_BUFFERSIZE);
                                 sense_offset = 0;
                         } else {
                                 /*
@@ -1795,11 +1795,11 @@ ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
                                     scb->sense_data;
                                 sense_size = min_t(size_t,
                                                 scsi_4btoul(siu->sense_length),
-                                                sizeof(cmd->sense_buffer));
+                                                SCSI_SENSE_BUFFERSIZE);
                                 sense_offset = SIU_SENSE_OFFSET(siu);
                         }
 
-                        memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+                        memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
                         memcpy(cmd->sense_buffer,
                                ahd_get_sense_buf(ahd, scb)
                                + sense_offset, sense_size);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index 390b0fc991c5..e310e414067f 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -1801,12 +1801,12 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
 
                         sense_size = min(sizeof(struct scsi_sense_data)
                                        - ahc_get_sense_residual(scb),
-                                         (u_long)sizeof(cmd->sense_buffer));
+                                         (u_long)SCSI_SENSE_BUFFERSIZE);
                         memcpy(cmd->sense_buffer,
                                ahc_get_sense_buf(ahc, scb), sense_size);
-                        if (sense_size < sizeof(cmd->sense_buffer))
+                        if (sense_size < SCSI_SENSE_BUFFERSIZE)
                                 memset(&cmd->sense_buffer[sense_size], 0,
-                                       sizeof(cmd->sense_buffer) - sense_size);
+                                       SCSI_SENSE_BUFFERSIZE - sense_size);
                         cmd->result |= (DRIVER_SENSE << 24);
 #ifdef AHC_DEBUG
                         if (ahc_debug & AHC_SHOW_SENSE) {
diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c
index 8f8db5f0aef7..bcb0b870320c 100644
--- a/drivers/scsi/aic7xxx_old.c
+++ b/drivers/scsi/aic7xxx_old.c
@@ -2696,7 +2696,7 @@ aic7xxx_done(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
   {
     pci_unmap_single(p->pdev,
                      le32_to_cpu(scb->sg_list[0].address),
-                     sizeof(cmd->sense_buffer),
+                     SCSI_SENSE_BUFFERSIZE,
                      PCI_DMA_FROMDEVICE);
   }
   if (scb->flags & SCB_RECOVERY_SCB)
@@ -4267,13 +4267,13 @@ aic7xxx_handle_seqint(struct aic7xxx_host *p, unsigned char intstat)
                        sizeof(generic_sense));
 
                 scb->sense_cmd[1] = (cmd->device->lun << 5);
-                scb->sense_cmd[4] = sizeof(cmd->sense_buffer);
+                scb->sense_cmd[4] = SCSI_SENSE_BUFFERSIZE;
 
                 scb->sg_list[0].length = 
-                  cpu_to_le32(sizeof(cmd->sense_buffer));
+                  cpu_to_le32(SCSI_SENSE_BUFFERSIZE);
                 scb->sg_list[0].address =
                         cpu_to_le32(pci_map_single(p->pdev, cmd->sense_buffer,
-                                                   sizeof(cmd->sense_buffer),
+                                                   SCSI_SENSE_BUFFERSIZE,
                                                    PCI_DMA_FROMDEVICE));
 
                 /*
@@ -4296,7 +4296,7 @@ aic7xxx_handle_seqint(struct aic7xxx_host *p, unsigned char intstat)
                 hscb->residual_data_count[2] = 0;
 
                 scb->sg_count = hscb->SG_segment_count = 1;
-                scb->sg_length = sizeof(cmd->sense_buffer);
+                scb->sg_length = SCSI_SENSE_BUFFERSIZE;
                 scb->tag_action = 0;
                 scb->flags |= SCB_SENSE;
                 /*
@@ -10293,7 +10293,6 @@ static int aic7xxx_queue(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *))
   aic7xxx_position(cmd) = scb->hscb->tag;
   cmd->scsi_done = fn;
   cmd->result = DID_OK;
-  memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
   aic7xxx_error(cmd) = DID_OK;
   aic7xxx_status(cmd) = 0;
   cmd->host_scribble = NULL;
diff --git a/drivers/scsi/aic94xx/aic94xx_dev.c b/drivers/scsi/aic94xx/aic94xx_dev.c
index 3dce618bf414..72042cae7768 100644
--- a/drivers/scsi/aic94xx/aic94xx_dev.c
+++ b/drivers/scsi/aic94xx/aic94xx_dev.c
@@ -165,7 +165,7 @@ static int asd_init_target_ddb(struct domain_device *dev)
         if (dev->port->oob_mode != SATA_OOB_MODE) {
                 flags |= OPEN_REQUIRED;
                 if ((dev->dev_type == SATA_DEV) ||
-                    (dev->tproto & SAS_PROTO_STP)) {
+                    (dev->tproto & SAS_PROTOCOL_STP)) {
                         struct smp_resp *rps_resp = &dev->sata_dev.rps_resp;
                         if (rps_resp->frame_type == SMP_RESPONSE &&
                             rps_resp->function == SMP_REPORT_PHY_SATA &&
@@ -193,7 +193,7 @@ static int asd_init_target_ddb(struct domain_device *dev)
         asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS, flags);
 
         flags = 0;
-        if (dev->tproto & SAS_PROTO_STP)
+        if (dev->tproto & SAS_PROTOCOL_STP)
                 flags |= STP_CL_POL_NO_TX;
         asd_ddbsite_write_byte(asd_ha, ddb, DDB_TARG_FLAGS2, flags);
 
@@ -201,7 +201,7 @@ static int asd_init_target_ddb(struct domain_device *dev)
         asd_ddbsite_write_word(asd_ha, ddb, SEND_QUEUE_TAIL, 0xFFFF);
         asd_ddbsite_write_word(asd_ha, ddb, SISTER_DDB, 0xFFFF);
 
-        if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTO_STP)) {
+        if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
                 i = asd_init_sata(dev);
                 if (i < 0) {
                         asd_free_ddb(asd_ha, ddb);
diff --git a/drivers/scsi/aic94xx/aic94xx_dump.c b/drivers/scsi/aic94xx/aic94xx_dump.c
index 6bd8e3059d27..3d8c4ff1f2ef 100644
--- a/drivers/scsi/aic94xx/aic94xx_dump.c
+++ b/drivers/scsi/aic94xx/aic94xx_dump.c
@@ -903,11 +903,11 @@ void asd_dump_frame_rcvd(struct asd_phy *phy,
         int i;
 
         switch ((dl->status_block[1] & 0x70) >> 3) {
-        case SAS_PROTO_STP:
+        case SAS_PROTOCOL_STP:
                 ASD_DPRINTK("STP proto device-to-host FIS:\n");
                 break;
         default:
-        case SAS_PROTO_SSP:
+        case SAS_PROTOCOL_SSP:
                 ASD_DPRINTK("SAS proto IDENTIFY:\n");
                 break;
         }
diff --git a/drivers/scsi/aic94xx/aic94xx_hwi.c b/drivers/scsi/aic94xx/aic94xx_hwi.c
index 0cd7eed9196c..098b5f39cd31 100644
--- a/drivers/scsi/aic94xx/aic94xx_hwi.c
+++ b/drivers/scsi/aic94xx/aic94xx_hwi.c
@@ -91,7 +91,7 @@ static int asd_init_phy(struct asd_phy *phy)
 
         sas_phy->enabled = 1;
         sas_phy->class = SAS;
-        sas_phy->iproto = SAS_PROTO_ALL;
+        sas_phy->iproto = SAS_PROTOCOL_ALL;
         sas_phy->tproto = 0;
         sas_phy->type = PHY_TYPE_PHYSICAL;
         sas_phy->role = PHY_ROLE_INITIATOR;
diff --git a/drivers/scsi/aic94xx/aic94xx_hwi.h b/drivers/scsi/aic94xx/aic94xx_hwi.h
index 491e5d8a98bc..150f6706d23f 100644
--- a/drivers/scsi/aic94xx/aic94xx_hwi.h
+++ b/drivers/scsi/aic94xx/aic94xx_hwi.h
@@ -72,6 +72,7 @@ struct flash_struct {
         u8     manuf;
         u8     dev_id;
         u8     sec_prot;
+        u8     method;
 
         u32    dir_offs;
 };
@@ -216,6 +217,8 @@ struct asd_ha_struct {
         struct dma_pool  *scb_pool;
 
         struct asd_seq_data  seq; /* sequencer related */
+        u32    bios_status;
+        const struct firmware *bios_image;
 };
 
 /* ---------- Common macros ---------- */
diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
index b70d6e7f96e9..5d761eb67442 100644
--- a/drivers/scsi/aic94xx/aic94xx_init.c
+++ b/drivers/scsi/aic94xx/aic94xx_init.c
@@ -29,6 +29,7 @@
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
+#include <linux/firmware.h>
 
 #include <scsi/scsi_host.h>
 
@@ -36,6 +37,7 @@
 #include "aic94xx_reg.h"
 #include "aic94xx_hwi.h"
 #include "aic94xx_seq.h"
+#include "aic94xx_sds.h"
 
 /* The format is "version.release.patchlevel" */
 #define ASD_DRIVER_VERSION "1.0.3"
@@ -134,7 +136,7 @@ Err:
         return err;
 }
 
-static void __devexit asd_unmap_memio(struct asd_ha_struct *asd_ha)
+static void asd_unmap_memio(struct asd_ha_struct *asd_ha)
 {
         struct asd_ha_addrspace *io_handle;
 
@@ -171,7 +173,7 @@ static int __devinit asd_map_ioport(struct asd_ha_struct *asd_ha)
         return err;
 }
 
-static void __devexit asd_unmap_ioport(struct asd_ha_struct *asd_ha)
+static void asd_unmap_ioport(struct asd_ha_struct *asd_ha)
 {
         pci_release_region(asd_ha->pcidev, PCI_IOBAR_OFFSET);
 }
@@ -208,7 +210,7 @@ Err:
         return err;
 }
 
-static void __devexit asd_unmap_ha(struct asd_ha_struct *asd_ha)
+static void asd_unmap_ha(struct asd_ha_struct *asd_ha)
 {
         if (asd_ha->iospace)
                 asd_unmap_ioport(asd_ha);
@@ -313,6 +315,181 @@ static ssize_t asd_show_dev_pcba_sn(struct device *dev,
 }
 static DEVICE_ATTR(pcba_sn, S_IRUGO, asd_show_dev_pcba_sn, NULL);
 
+#define FLASH_CMD_NONE      0x00
+#define FLASH_CMD_UPDATE    0x01
+#define FLASH_CMD_VERIFY    0x02
+
+struct flash_command {
+     u8      command[8];
+     int     code;
+};
+
+static struct flash_command flash_command_table[] =
+{
+     {"verify",      FLASH_CMD_VERIFY},
+     {"update",      FLASH_CMD_UPDATE},
+     {"",            FLASH_CMD_NONE}      /* Last entry should be NULL. */
+};
+
+struct error_bios {
+     char    *reason;
+     int     err_code;
+};
+
+static struct error_bios flash_error_table[] =
+{
+     {"Failed to open bios image file",      FAIL_OPEN_BIOS_FILE},
+     {"PCI ID mismatch",                     FAIL_CHECK_PCI_ID},
+     {"Checksum mismatch",                   FAIL_CHECK_SUM},
+     {"Unknown Error",                       FAIL_UNKNOWN},
+     {"Failed to verify.",                   FAIL_VERIFY},
+     {"Failed to reset flash chip.",         FAIL_RESET_FLASH},
+     {"Failed to find flash chip type.",     FAIL_FIND_FLASH_ID},
+     {"Failed to erash flash chip.",         FAIL_ERASE_FLASH},
+     {"Failed to program flash chip.",       FAIL_WRITE_FLASH},
+     {"Flash in progress",                   FLASH_IN_PROGRESS},
+     {"Image file size Error",               FAIL_FILE_SIZE},
+     {"Input parameter error",               FAIL_PARAMETERS},
+     {"Out of memory",                       FAIL_OUT_MEMORY},
+     {"OK", 0}  /* Last entry err_code = 0. */
+};
+
+static ssize_t asd_store_update_bios(struct device *dev,
+        struct device_attribute *attr,
+        const char *buf, size_t count)
+{
+        struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
+        char *cmd_ptr, *filename_ptr;
+        struct bios_file_header header, *hdr_ptr;
+        int res, i;
+        u32 csum = 0;
+        int flash_command = FLASH_CMD_NONE;
+        int err = 0;
+
+        cmd_ptr = kzalloc(count*2, GFP_KERNEL);
+
+        if (!cmd_ptr) {
+                err = FAIL_OUT_MEMORY;
+                goto out;
+        }
+
+        filename_ptr = cmd_ptr + count;
+        res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
+        if (res != 2) {
+                err = FAIL_PARAMETERS;
+                goto out1;
+        }
+
+        for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
+                if (!memcmp(flash_command_table[i].command,
+                                 cmd_ptr, strlen(cmd_ptr))) {
+                        flash_command = flash_command_table[i].code;
+                        break;
+                }
+        }
+        if (flash_command == FLASH_CMD_NONE) {
+                err = FAIL_PARAMETERS;
+                goto out1;
+        }
+
+        if (asd_ha->bios_status == FLASH_IN_PROGRESS) {
+                err = FLASH_IN_PROGRESS;
+                goto out1;
+        }
+        err = request_firmware(&asd_ha->bios_image,
+                                   filename_ptr,
+                                   &asd_ha->pcidev->dev);
+        if (err) {
+                asd_printk("Failed to load bios image file %s, error %d\n",
+                           filename_ptr, err);
+                err = FAIL_OPEN_BIOS_FILE;
+                goto out1;
+        }
+
+        hdr_ptr = (struct bios_file_header *)asd_ha->bios_image->data;
+
+        if ((hdr_ptr->contrl_id.vendor != asd_ha->pcidev->vendor ||
+                hdr_ptr->contrl_id.device != asd_ha->pcidev->device) &&
+                (hdr_ptr->contrl_id.sub_vendor != asd_ha->pcidev->vendor ||
+                hdr_ptr->contrl_id.sub_device != asd_ha->pcidev->device)) {
+
+                ASD_DPRINTK("The PCI vendor or device id does not match\n");
+                ASD_DPRINTK("vendor=%x dev=%x sub_vendor=%x sub_dev=%x"
+                " pci vendor=%x pci dev=%x\n",
+                hdr_ptr->contrl_id.vendor,
+                hdr_ptr->contrl_id.device,
+                hdr_ptr->contrl_id.sub_vendor,
+                hdr_ptr->contrl_id.sub_device,
+                asd_ha->pcidev->vendor,
+                asd_ha->pcidev->device);
+                err = FAIL_CHECK_PCI_ID;
+                goto out2;
+        }
+
+        if (hdr_ptr->filelen != asd_ha->bios_image->size) {
+                err = FAIL_FILE_SIZE;
+                goto out2;
+        }
+
+        /* calculate checksum */
+        for (i = 0; i < hdr_ptr->filelen; i++)
+                csum += asd_ha->bios_image->data[i];
+
+        if ((csum & 0x0000ffff) != hdr_ptr->checksum) {
+                ASD_DPRINTK("BIOS file checksum mismatch\n");
+                err = FAIL_CHECK_SUM;
+                goto out2;
+        }
+        if (flash_command == FLASH_CMD_UPDATE) {
+                asd_ha->bios_status = FLASH_IN_PROGRESS;
+                err = asd_write_flash_seg(asd_ha,
+                        &asd_ha->bios_image->data[sizeof(*hdr_ptr)],
+                        0, hdr_ptr->filelen-sizeof(*hdr_ptr));
+                if (!err)
+                        err = asd_verify_flash_seg(asd_ha,
+                                &asd_ha->bios_image->data[sizeof(*hdr_ptr)],
+                                0, hdr_ptr->filelen-sizeof(*hdr_ptr));
+        } else {
+                asd_ha->bios_status = FLASH_IN_PROGRESS;
+                err = asd_verify_flash_seg(asd_ha,
+                        &asd_ha->bios_image->data[sizeof(header)],
+                        0, hdr_ptr->filelen-sizeof(header));
+        }
+
+out2:
+        release_firmware(asd_ha->bios_image);
+out1:
+        kfree(cmd_ptr);
+out:
+        asd_ha->bios_status = err;
+
+        if (!err)
+                return count;
+        else
+                return -err;
+}
+
+static ssize_t asd_show_update_bios(struct device *dev,
+                                    struct device_attribute *attr, char *buf)
+{
+        int i;
+        struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
+
+        for (i = 0; flash_error_table[i].err_code != 0; i++) {
+                if (flash_error_table[i].err_code == asd_ha->bios_status)
+                        break;
+        }
+        if (asd_ha->bios_status != FLASH_IN_PROGRESS)
+                asd_ha->bios_status = FLASH_OK;
+
+        return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
+                        flash_error_table[i].err_code,
+                        flash_error_table[i].reason);
+}
+
+static DEVICE_ATTR(update_bios, S_IRUGO|S_IWUGO,
+        asd_show_update_bios, asd_store_update_bios);
+
 static int asd_create_dev_attrs(struct asd_ha_struct *asd_ha)
 {
         int err;
@@ -328,9 +505,14 @@ static int asd_create_dev_attrs(struct asd_ha_struct *asd_ha)
         err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
         if (err)
                 goto err_biosb;
+        err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
+        if (err)
+                goto err_update_bios;
 
         return 0;
 
+err_update_bios:
+        device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
 err_biosb:
         device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
 err_rev:
@@ -343,6 +525,7 @@ static void asd_remove_dev_attrs(struct asd_ha_struct *asd_ha)
         device_remove_file(&asd_ha->pcidev->dev, &dev_attr_revision);
         device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
         device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
+        device_remove_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
 }
 
 /* The first entry, 0, is used for dynamic ids, the rest for devices
@@ -589,6 +772,7 @@ static int __devinit asd_pci_probe(struct pci_dev *dev,
         asd_ha->sas_ha.dev = &asd_ha->pcidev->dev;
         asd_ha->sas_ha.lldd_ha = asd_ha;
 
+        asd_ha->bios_status = FLASH_OK;
         asd_ha->name = asd_dev->name;
         asd_printk("found %s, device %s\n", asd_ha->name, pci_name(dev));
 
diff --git a/drivers/scsi/aic94xx/aic94xx_scb.c b/drivers/scsi/aic94xx/aic94xx_scb.c
index db6ab1a3b81e..0febad4dd75f 100644
--- a/drivers/scsi/aic94xx/aic94xx_scb.c
+++ b/drivers/scsi/aic94xx/aic94xx_scb.c
@@ -788,12 +788,12 @@ void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc)
 
                 /* initiator port settings are in the hi nibble */
                 if (phy->sas_phy.role == PHY_ROLE_INITIATOR)
-                        control_phy->port_type = SAS_PROTO_ALL << 4;
+                        control_phy->port_type = SAS_PROTOCOL_ALL << 4;
                 else if (phy->sas_phy.role == PHY_ROLE_TARGET)
-                        control_phy->port_type = SAS_PROTO_ALL;
+                        control_phy->port_type = SAS_PROTOCOL_ALL;
                 else
                         control_phy->port_type =
-                                (SAS_PROTO_ALL << 4) | SAS_PROTO_ALL;
+                                (SAS_PROTOCOL_ALL << 4) | SAS_PROTOCOL_ALL;
 
                 /* link reset retries, this should be nominal */
                 control_phy->link_reset_retries = 10;
diff --git a/drivers/scsi/aic94xx/aic94xx_sds.c b/drivers/scsi/aic94xx/aic94xx_sds.c
index 06509bff71f7..2a4c933eb89c 100644
--- a/drivers/scsi/aic94xx/aic94xx_sds.c
+++ b/drivers/scsi/aic94xx/aic94xx_sds.c
@@ -30,6 +30,7 @@
 
 #include "aic94xx.h"
 #include "aic94xx_reg.h"
+#include "aic94xx_sds.h"
 
 /* ---------- OCM stuff ---------- */
 
@@ -1083,3 +1084,391 @@ out:
         kfree(flash_dir);
         return err;
 }
+
+/**
+ * asd_verify_flash_seg - verify data with flash memory
+ * @asd_ha: pointer to the host adapter structure
+ * @src: pointer to the source data to be verified
+ * @dest_offset: offset from flash memory
+ * @bytes_to_verify: total bytes to verify
+ */
+int asd_verify_flash_seg(struct asd_ha_struct *asd_ha,
+                void *src, u32 dest_offset, u32 bytes_to_verify)
+{
+        u8 *src_buf;
+        u8 flash_char;
+        int err;
+        u32 nv_offset, reg, i;
+
+        reg = asd_ha->hw_prof.flash.bar;
+        src_buf = NULL;
+
+        err = FLASH_OK;
+        nv_offset = dest_offset;
+        src_buf = (u8 *)src;
+        for (i = 0; i < bytes_to_verify; i++) {
+                flash_char = asd_read_reg_byte(asd_ha, reg + nv_offset + i);
+                if (flash_char != src_buf[i]) {
+                        err = FAIL_VERIFY;
+                        break;
+                }
+        }
+        return err;
+}
+
+/**
+ * asd_write_flash_seg - write data into flash memory
+ * @asd_ha: pointer to the host adapter structure
+ * @src: pointer to the source data to be written
+ * @dest_offset: offset from flash memory
+ * @bytes_to_write: total bytes to write
+ */
+int asd_write_flash_seg(struct asd_ha_struct *asd_ha,
+                void *src, u32 dest_offset, u32 bytes_to_write)
+{
+        u8 *src_buf;
+        u32 nv_offset, reg, i;
+        int err;
+
+        reg = asd_ha->hw_prof.flash.bar;
+        src_buf = NULL;
+
+        err = asd_check_flash_type(asd_ha);
+        if (err) {
+                ASD_DPRINTK("couldn't find the type of flash. err=%d\n", err);
+                return err;
+        }
+
+        nv_offset = dest_offset;
+        err = asd_erase_nv_sector(asd_ha, nv_offset, bytes_to_write);
+        if (err) {
+                ASD_DPRINTK("Erase failed at offset:0x%x\n",
+                        nv_offset);
+                return err;
+        }
+
+        err = asd_reset_flash(asd_ha);
+        if (err) {
+                ASD_DPRINTK("couldn't reset flash. err=%d\n", err);
+                return err;
+        }
+
+        src_buf = (u8 *)src;
+        for (i = 0; i < bytes_to_write; i++) {
+                /* Setup program command sequence */
+                switch (asd_ha->hw_prof.flash.method) {
+                case FLASH_METHOD_A:
+                {
+                        asd_write_reg_byte(asd_ha,
+                                        (reg + 0xAAA), 0xAA);
+                        asd_write_reg_byte(asd_ha,
+                                        (reg + 0x555), 0x55);
+                        asd_write_reg_byte(asd_ha,
+                                        (reg + 0xAAA), 0xA0);
+                        asd_write_reg_byte(asd_ha,
+                                        (reg + nv_offset + i),
+                                        (*(src_buf + i)));
+                        break;
+                }
+                case FLASH_METHOD_B:
+                {
+                        asd_write_reg_byte(asd_ha,
+                                        (reg + 0x555), 0xAA);
+                        asd_write_reg_byte(asd_ha,
+                                        (reg + 0x2AA), 0x55);
+                        asd_write_reg_byte(asd_ha,
+                                        (reg + 0x555), 0xA0);
+                        asd_write_reg_byte(asd_ha,
+                                        (reg + nv_offset + i),
+                                        (*(src_buf + i)));
+                        break;
+                }
+                default:
+                        break;
+                }
+                if (asd_chk_write_status(asd_ha,
+                                (nv_offset + i), 0) != 0) {
+                        ASD_DPRINTK("aicx: Write failed at offset:0x%x\n",
+                                reg + nv_offset + i);
+                        return FAIL_WRITE_FLASH;
+                }
+        }
+
+        err = asd_reset_flash(asd_ha);
+        if (err) {
+                ASD_DPRINTK("couldn't reset flash. err=%d\n", err);
+                return err;
+        }
+        return 0;
+}
+
+int asd_chk_write_status(struct asd_ha_struct *asd_ha,
+         u32 sector_addr, u8 erase_flag)
+{
+        u32 reg;
+        u32 loop_cnt;
+        u8  nv_data1, nv_data2;
+        u8  toggle_bit1;
+
+        /*
+         * Read from DQ2 requires sector address
+         * while it's dont care for DQ6
+         */
+        reg = asd_ha->hw_prof.flash.bar;
+
+        for (loop_cnt = 0; loop_cnt < 50000; loop_cnt++) {
+                nv_data1 = asd_read_reg_byte(asd_ha, reg);
+                nv_data2 = asd_read_reg_byte(asd_ha, reg);
+
+                toggle_bit1 = ((nv_data1 & FLASH_STATUS_BIT_MASK_DQ6)
+                                 ^ (nv_data2 & FLASH_STATUS_BIT_MASK_DQ6));
+
+                if (toggle_bit1 == 0) {
+                        return 0;
+                } else {
+                        if (nv_data2 & FLASH_STATUS_BIT_MASK_DQ5) {
+                                nv_data1 = asd_read_reg_byte(asd_ha,
+                                                                reg);
+                                nv_data2 = asd_read_reg_byte(asd_ha,
+                                                                reg);
+                                toggle_bit1 =
+                                ((nv_data1 & FLASH_STATUS_BIT_MASK_DQ6)
+                                ^ (nv_data2 & FLASH_STATUS_BIT_MASK_DQ6));
+
+                                if (toggle_bit1 == 0)
+                                        return 0;
+                        }
+                }
+
+                /*
+                 * ERASE is a sector-by-sector operation and requires
+                 * more time to finish while WRITE is byte-byte-byte
+                 * operation and takes lesser time to finish.
+                 *
+                 * For some strange reason a reduced ERASE delay gives different
+                 * behaviour across different spirit boards. Hence we set
+                 * a optimum balance of 50mus for ERASE which works well
+                 * across all boards.
+                 */
+                if (erase_flag) {
+                        udelay(FLASH_STATUS_ERASE_DELAY_COUNT);
+                } else {
+                        udelay(FLASH_STATUS_WRITE_DELAY_COUNT);
+                }
+        }
+        return -1;
+}
+
+/**
+ * asd_hwi_erase_nv_sector - Erase the flash memory sectors.
+ * @asd_ha: pointer to the host adapter structure
+ * @flash_addr: pointer to offset from flash memory
+ * @size: total bytes to erase.
+ */
+int asd_erase_nv_sector(struct asd_ha_struct *asd_ha, u32 flash_addr, u32 size)
+{
+        u32 reg;
+        u32 sector_addr;
+
+        reg = asd_ha->hw_prof.flash.bar;
+
+        /* sector staring address */
+        sector_addr = flash_addr & FLASH_SECTOR_SIZE_MASK;
+
+        /*
+         * Erasing an flash sector needs to be done in six consecutive
+         * write cyles.
+         */
+        while (sector_addr < flash_addr+size) {
+                switch (asd_ha->hw_prof.flash.method) {
+                case FLASH_METHOD_A:
+                        asd_write_reg_byte(asd_ha, (reg + 0xAAA), 0xAA);
+                        asd_write_reg_byte(asd_ha, (reg + 0x555), 0x55);
+                        asd_write_reg_byte(asd_ha, (reg + 0xAAA), 0x80);
+                        asd_write_reg_byte(asd_ha, (reg + 0xAAA), 0xAA);
+                        asd_write_reg_byte(asd_ha, (reg + 0x555), 0x55);
+                        asd_write_reg_byte(asd_ha, (reg + sector_addr), 0x30);
+                        break;
+                case FLASH_METHOD_B:
+                        asd_write_reg_byte(asd_ha, (reg + 0x555), 0xAA);
+                        asd_write_reg_byte(asd_ha, (reg + 0x2AA), 0x55);
+                        asd_write_reg_byte(asd_ha, (reg + 0x555), 0x80);
+                        asd_write_reg_byte(asd_ha, (reg + 0x555), 0xAA);
+                        asd_write_reg_byte(asd_ha, (reg + 0x2AA), 0x55);
+                        asd_write_reg_byte(asd_ha, (reg + sector_addr), 0x30);
+                        break;
+                default:
+                        break;
+                }
+
+                if (asd_chk_write_status(asd_ha, sector_addr, 1) != 0)
+                        return FAIL_ERASE_FLASH;
+
+                sector_addr += FLASH_SECTOR_SIZE;
+        }
+
+        return 0;
+}
+
+int asd_check_flash_type(struct asd_ha_struct *asd_ha)
+{
+        u8 manuf_id;
+        u8 dev_id;
+        u8 sec_prot;
+        u32 inc;
+        u32 reg;
+        int err;
+
+        /* get Flash memory base address */
+        reg = asd_ha->hw_prof.flash.bar;
+
+        /* Determine flash info */
+        err = asd_reset_flash(asd_ha);
+        if (err) {
+                ASD_DPRINTK("couldn't reset flash. err=%d\n", err);
+                return err;
+        }
+
+        asd_ha->hw_prof.flash.method = FLASH_METHOD_UNKNOWN;
+        asd_ha->hw_prof.flash.manuf = FLASH_MANUF_ID_UNKNOWN;
+        asd_ha->hw_prof.flash.dev_id = FLASH_DEV_ID_UNKNOWN;
+
+        /* Get flash info. This would most likely be AMD Am29LV family flash.
+         * First try the sequence for word mode.  It is the same as for
+         * 008B (byte mode only), 160B (word mode) and 800D (word mode).
+         */
+        inc = asd_ha->hw_prof.flash.wide ? 2 : 1;
+        asd_write_reg_byte(asd_ha, reg + 0xAAA, 0xAA);
+        asd_write_reg_byte(asd_ha, reg + 0x555, 0x55);
+        asd_write_reg_byte(asd_ha, reg + 0xAAA, 0x90);
+        manuf_id = asd_read_reg_byte(asd_ha, reg);
+        dev_id = asd_read_reg_byte(asd_ha, reg + inc);
+        sec_prot = asd_read_reg_byte(asd_ha, reg + inc + inc);
+        /* Get out of autoselect mode. */
+        err = asd_reset_flash(asd_ha);
+        if (err) {
+                ASD_DPRINTK("couldn't reset flash. err=%d\n", err);
+                return err;
+        }
+        ASD_DPRINTK("Flash MethodA manuf_id(0x%x) dev_id(0x%x) "
+                "sec_prot(0x%x)\n", manuf_id, dev_id, sec_prot);
+        err = asd_reset_flash(asd_ha);
+        if (err != 0)
+                return err;
+
+        switch (manuf_id) {
+        case FLASH_MANUF_ID_AMD:
+                switch (sec_prot) {
+                case FLASH_DEV_ID_AM29LV800DT:
+                case FLASH_DEV_ID_AM29LV640MT:
+                case FLASH_DEV_ID_AM29F800B:
+                        asd_ha->hw_prof.flash.method = FLASH_METHOD_A;
+                        break;
+                default:
+                        break;
+                }
+                break;
+        case FLASH_MANUF_ID_ST:
+                switch (sec_prot) {
+                case FLASH_DEV_ID_STM29W800DT:
+                case FLASH_DEV_ID_STM29LV640:
+                        asd_ha->hw_prof.flash.method = FLASH_METHOD_A;
+                        break;
+                default:
+                        break;
+                }
+                break;
+        case FLASH_MANUF_ID_FUJITSU:
+                switch (sec_prot) {
+                case FLASH_DEV_ID_MBM29LV800TE:
+                case FLASH_DEV_ID_MBM29DL800TA:
+                        asd_ha->hw_prof.flash.method = FLASH_METHOD_A;
+                        break;
+                }
+                break;
+        case FLASH_MANUF_ID_MACRONIX:
+                switch (sec_prot) {
+                case FLASH_DEV_ID_MX29LV800BT:
+                        asd_ha->hw_prof.flash.method = FLASH_METHOD_A;
+                        break;
+                }
+                break;
+        }
+
+        if (asd_ha->hw_prof.flash.method == FLASH_METHOD_UNKNOWN) {
+                err = asd_reset_flash(asd_ha);
+                if (err) {
+                        ASD_DPRINTK("couldn't reset flash. err=%d\n", err);
+                        return err;
+                }
+
+                /* Issue Unlock sequence for AM29LV008BT */
+                asd_write_reg_byte(asd_ha, (reg + 0x555), 0xAA);
+                asd_write_reg_byte(asd_ha, (reg + 0x2AA), 0x55);
+                asd_write_reg_byte(asd_ha, (reg + 0x555), 0x90);
+                manuf_id = asd_read_reg_byte(asd_ha, reg);
+                dev_id = asd_read_reg_byte(asd_ha, reg + inc);
+                sec_prot = asd_read_reg_byte(asd_ha, reg + inc + inc);
+
+                ASD_DPRINTK("Flash MethodB manuf_id(0x%x) dev_id(0x%x) sec_prot"
+                        "(0x%x)\n", manuf_id, dev_id, sec_prot);
+
+                err = asd_reset_flash(asd_ha);
+                if (err != 0) {
+                        ASD_DPRINTK("couldn't reset flash. err=%d\n", err);
+                        return err;
+                }
+
+                switch (manuf_id) {
+                case FLASH_MANUF_ID_AMD:
+                        switch (dev_id) {
+                        case FLASH_DEV_ID_AM29LV008BT:
+                                asd_ha->hw_prof.flash.method = FLASH_METHOD_B;
+                                break;
+                        default:
+                                break;
+                        }
+                        break;
+                case FLASH_MANUF_ID_ST:
+                        switch (dev_id) {
+                        case FLASH_DEV_ID_STM29008:
+                                asd_ha->hw_prof.flash.method = FLASH_METHOD_B;
+                                break;
+                        default:
+                                break;
+                        }
+                        break;
+                case FLASH_MANUF_ID_FUJITSU:
+                        switch (dev_id) {
+                        case FLASH_DEV_ID_MBM29LV008TA:
+                                asd_ha->hw_prof.flash.method = FLASH_METHOD_B;
+                                break;
+                        }
+                        break;
+                case FLASH_MANUF_ID_INTEL:
+                        switch (dev_id) {
+                        case FLASH_DEV_ID_I28LV00TAT:
+                                asd_ha->hw_prof.flash.method = FLASH_METHOD_B;
+                                break;
+                        }
+                        break;
+                case FLASH_MANUF_ID_MACRONIX:
+                        switch (dev_id) {
+                        case FLASH_DEV_ID_I28LV00TAT:
+                                asd_ha->hw_prof.flash.method = FLASH_METHOD_B;
+                                break;
+                        }
+                        break;
+                default:
+                        return FAIL_FIND_FLASH_ID;
+                }
+        }
+
+        if (asd_ha->hw_prof.flash.method == FLASH_METHOD_UNKNOWN)
+              return FAIL_FIND_FLASH_ID;
+
+        asd_ha->hw_prof.flash.manuf = manuf_id;
+        asd_ha->hw_prof.flash.dev_id = dev_id;
+        asd_ha->hw_prof.flash.sec_prot = sec_prot;
+        return 0;
+}
diff --git a/drivers/scsi/aic94xx/aic94xx_sds.h b/drivers/scsi/aic94xx/aic94xx_sds.h
new file mode 100644
index 000000000000..bb9795a04dc3
--- /dev/null
+++ b/drivers/scsi/aic94xx/aic94xx_sds.h
@@ -0,0 +1,121 @@
+/*
+ * Aic94xx SAS/SATA driver hardware interface header file.
+ *
+ * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
+ * Copyright (C) 2005 Gilbert Wu <gilbert_wu@adaptec.com>
+ *
+ * This file is licensed under GPLv2.
+ *
+ * This file is part of the aic94xx driver.
+ *
+ * The aic94xx driver is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of the
+ * License.
+ *
+ * The aic94xx driver is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the aic94xx driver; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+#ifndef _AIC94XX_SDS_H_
+#define _AIC94XX_SDS_H_
+
+enum {
+        FLASH_METHOD_UNKNOWN,
+        FLASH_METHOD_A,
+        FLASH_METHOD_B
+};
+
+#define FLASH_MANUF_ID_AMD              0x01
+#define FLASH_MANUF_ID_ST               0x20
+#define FLASH_MANUF_ID_FUJITSU          0x04
+#define FLASH_MANUF_ID_MACRONIX         0xC2
+#define FLASH_MANUF_ID_INTEL            0x89
+#define FLASH_MANUF_ID_UNKNOWN          0xFF
+
+#define FLASH_DEV_ID_AM29LV008BT        0x3E
+#define FLASH_DEV_ID_AM29LV800DT        0xDA
+#define FLASH_DEV_ID_STM29W800DT        0xD7
+#define FLASH_DEV_ID_STM29LV640         0xDE
+#define FLASH_DEV_ID_STM29008           0xEA
+#define FLASH_DEV_ID_MBM29LV800TE       0xDA
+#define FLASH_DEV_ID_MBM29DL800TA       0x4A
+#define FLASH_DEV_ID_MBM29LV008TA       0x3E
+#define FLASH_DEV_ID_AM29LV640MT        0x7E
+#define FLASH_DEV_ID_AM29F800B          0xD6
+#define FLASH_DEV_ID_MX29LV800BT        0xDA
+#define FLASH_DEV_ID_MX29LV008CT        0xDA
+#define FLASH_DEV_ID_I28LV00TAT         0x3E
+#define FLASH_DEV_ID_UNKNOWN            0xFF
+
+/* status bit mask values */
+#define FLASH_STATUS_BIT_MASK_DQ6       0x40
+#define FLASH_STATUS_BIT_MASK_DQ5       0x20
+#define FLASH_STATUS_BIT_MASK_DQ2       0x04
+
+/* minimum value in micro seconds needed for checking status */
+#define FLASH_STATUS_ERASE_DELAY_COUNT  50
+#define FLASH_STATUS_WRITE_DELAY_COUNT  25
+
+#define FLASH_SECTOR_SIZE               0x010000
+#define FLASH_SECTOR_SIZE_MASK          0xffff0000
+
+#define FLASH_OK                        0x000000
+#define FAIL_OPEN_BIOS_FILE             0x000100
+#define FAIL_CHECK_PCI_ID               0x000200
+#define FAIL_CHECK_SUM                  0x000300
+#define FAIL_UNKNOWN                    0x000400
+#define FAIL_VERIFY                     0x000500
+#define FAIL_RESET_FLASH                0x000600
+#define FAIL_FIND_FLASH_ID              0x000700
+#define FAIL_ERASE_FLASH                0x000800
+#define FAIL_WRITE_FLASH                0x000900
+#define FAIL_FILE_SIZE                  0x000a00
+#define FAIL_PARAMETERS                 0x000b00
+#define FAIL_OUT_MEMORY                 0x000c00
+#define FLASH_IN_PROGRESS               0x001000
+
+struct controller_id {
+        u32 vendor;     /* PCI Vendor ID */
+        u32 device;     /* PCI Device ID */
+        u32 sub_vendor; /* PCI Subvendor ID */
+        u32 sub_device; /* PCI Subdevice ID */
+};
+
+struct image_info {
+        u32 ImageId;       /* Identifies the image */
+        u32 ImageOffset;   /* Offset the beginning of the file */
+        u32 ImageLength;   /* length of the image */
+        u32 ImageChecksum; /* Image checksum */
+        u32 ImageVersion;  /* Version of the image, could be build number */
+};
+
+struct bios_file_header {
+        u8 signature[32]; /* Signature/Cookie to identify the file */
+        u32 checksum;     /*Entire file checksum with this field zero */
+        u32 antidote;     /* Entire file checksum with this field 0xFFFFFFFF */
+        struct controller_id contrl_id; /*PCI id to identify the controller */
+        u32 filelen;      /*Length of the entire file*/
+        u32 chunk_num;    /*The chunk/part number for multiple Image files */
+        u32 total_chunks; /*Total number of chunks/parts in the image file */
+        u32 num_images;   /* Number of images in the file */
+        u32 build_num;    /* Build number of this image */
+        struct image_info image_header;
+};
+
+int asd_verify_flash_seg(struct asd_ha_struct *asd_ha,
+                void *src, u32 dest_offset, u32 bytes_to_verify);
+int asd_write_flash_seg(struct asd_ha_struct *asd_ha,
+                void *src, u32 dest_offset, u32 bytes_to_write);
+int asd_chk_write_status(struct asd_ha_struct *asd_ha,
+                u32 sector_addr, u8 erase_flag);
+int asd_check_flash_type(struct asd_ha_struct *asd_ha);
+int asd_erase_nv_sector(struct asd_ha_struct *asd_ha,
+                u32 flash_addr, u32 size);
+#endif
diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c
index ee0a98bffcd4..965d4bb999d9 100644
--- a/drivers/scsi/aic94xx/aic94xx_task.c
+++ b/drivers/scsi/aic94xx/aic94xx_task.c
@@ -187,29 +187,13 @@ static void asd_get_response_tasklet(struct asd_ascb *ascb,
         ts->buf_valid_size = 0;
         edb = asd_ha->seq.edb_arr[edb_id + escb->edb_index];
         r = edb->vaddr;
-        if (task->task_proto == SAS_PROTO_SSP) {
+        if (task->task_proto == SAS_PROTOCOL_SSP) {
                 struct ssp_response_iu *iu =
                         r + 16 + sizeof(struct ssp_frame_hdr);
 
                 ts->residual = le32_to_cpu(*(__le32 *)r);
-                ts->resp = SAS_TASK_COMPLETE;
-                if (iu->datapres == 0)
-                        ts->stat = iu->status;
-                else if (iu->datapres == 1)
-                        ts->stat = iu->resp_data[3];
-                else if (iu->datapres == 2) {
-                        ts->stat = SAM_CHECK_COND;
-                        ts->buf_valid_size = min((u32) SAS_STATUS_BUF_SIZE,
-                                         be32_to_cpu(iu->sense_data_len));
-                        memcpy(ts->buf, iu->sense_data, ts->buf_valid_size);
-                        if (iu->status != SAM_CHECK_COND) {
-                                ASD_DPRINTK("device %llx sent sense data, but "
-                                            "stat(0x%x) is not CHECK_CONDITION"
-                                            "\n",
-                                            SAS_ADDR(task->dev->sas_addr),
-                                            iu->status);
-                        }
-                }
+
+                sas_ssp_task_response(&asd_ha->pcidev->dev, task, iu);
         }  else {
                 struct ata_task_resp *resp = (void *) &ts->buf[0];
 
@@ -341,14 +325,14 @@ Again:
         }
 
         switch (task->task_proto) {
-        case SATA_PROTO:
-        case SAS_PROTO_STP:
+        case SAS_PROTOCOL_SATA:
+        case SAS_PROTOCOL_STP:
                 asd_unbuild_ata_ascb(ascb);
                 break;
-        case SAS_PROTO_SMP:
+        case SAS_PROTOCOL_SMP:
                 asd_unbuild_smp_ascb(ascb);
                 break;
-        case SAS_PROTO_SSP:
+        case SAS_PROTOCOL_SSP:
                 asd_unbuild_ssp_ascb(ascb);
         default:
                 break;
@@ -586,17 +570,17 @@ int asd_execute_task(struct sas_task *task, const int num,
         list_for_each_entry(a, &alist, list) {
                 t = a->uldd_task;
                 a->uldd_timer = 1;
-                if (t->task_proto & SAS_PROTO_STP)
-                        t->task_proto = SAS_PROTO_STP;
+                if (t->task_proto & SAS_PROTOCOL_STP)
+                        t->task_proto = SAS_PROTOCOL_STP;
                 switch (t->task_proto) {
-                case SATA_PROTO:
-                case SAS_PROTO_STP:
+                case SAS_PROTOCOL_SATA:
+                case SAS_PROTOCOL_STP:
                         res = asd_build_ata_ascb(a, t, gfp_flags);
                         break;
-                case SAS_PROTO_SMP:
+                case SAS_PROTOCOL_SMP:
                         res = asd_build_smp_ascb(a, t, gfp_flags);
                         break;
-                case SAS_PROTO_SSP:
+                case SAS_PROTOCOL_SSP:
                         res = asd_build_ssp_ascb(a, t, gfp_flags);
                         break;
                 default:
@@ -633,14 +617,14 @@ out_err_unmap:
                         t->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
                         spin_unlock_irqrestore(&t->task_state_lock, flags);
                         switch (t->task_proto) {
-                        case SATA_PROTO:
-                        case SAS_PROTO_STP:
+                        case SAS_PROTOCOL_SATA:
+                        case SAS_PROTOCOL_STP:
                                 asd_unbuild_ata_ascb(a);
                                 break;
-                        case SAS_PROTO_SMP:
+                        case SAS_PROTOCOL_SMP:
                                 asd_unbuild_smp_ascb(a);
                                 break;
-                        case SAS_PROTO_SSP:
+                        case SAS_PROTOCOL_SSP:
                                 asd_unbuild_ssp_ascb(a);
                         default:
                                 break;
diff --git a/drivers/scsi/aic94xx/aic94xx_tmf.c b/drivers/scsi/aic94xx/aic94xx_tmf.c
index c0d0b7d7a8ce..87b2f6e6adfe 100644
--- a/drivers/scsi/aic94xx/aic94xx_tmf.c
+++ b/drivers/scsi/aic94xx/aic94xx_tmf.c
@@ -372,21 +372,21 @@ int asd_abort_task(struct sas_task *task)
         scb->header.opcode = ABORT_TASK;
 
         switch (task->task_proto) {
-        case SATA_PROTO:
-        case SAS_PROTO_STP:
+        case SAS_PROTOCOL_SATA:
+        case SAS_PROTOCOL_STP:
                 scb->abort_task.proto_conn_rate = (1 << 5); /* STP */
                 break;
-        case SAS_PROTO_SSP:
+        case SAS_PROTOCOL_SSP:
                 scb->abort_task.proto_conn_rate  = (1 << 4); /* SSP */
                 scb->abort_task.proto_conn_rate |= task->dev->linkrate;
                 break;
-        case SAS_PROTO_SMP:
+        case SAS_PROTOCOL_SMP:
                 break;
         default:
                 break;
         }
 
-        if (task->task_proto == SAS_PROTO_SSP) {
+        if (task->task_proto == SAS_PROTOCOL_SSP) {
                 scb->abort_task.ssp_frame.frame_type = SSP_TASK;
                 memcpy(scb->abort_task.ssp_frame.hashed_dest_addr,
                        task->dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
@@ -512,7 +512,7 @@ static int asd_initiate_ssp_tmf(struct domain_device *dev, u8 *lun,
         int res = 1;
         struct scb *scb;
 
-        if (!(dev->tproto & SAS_PROTO_SSP))
+        if (!(dev->tproto & SAS_PROTOCOL_SSP))
                 return TMF_RESP_FUNC_ESUPP;
 
         ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index d466a2dac1db..d80dba913a75 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -634,9 +634,9 @@ static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
         pcmd->result = DID_OK << 16;
         if (sensebuffer) {
                 int sense_data_length =
-                        sizeof(struct SENSE_DATA) < sizeof(pcmd->sense_buffer)
-                        ? sizeof(struct SENSE_DATA) : sizeof(pcmd->sense_buffer);
-                memset(sensebuffer, 0, sizeof(pcmd->sense_buffer));
+                        sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE
+                        ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE;
+                memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE);
                 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
                 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
                 sensebuffer->Valid = 1;
diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c
index a9680b5e8ac6..93b61f148653 100644
--- a/drivers/scsi/atari_NCR5380.c
+++ b/drivers/scsi/atari_NCR5380.c
@@ -511,9 +511,9 @@ static inline void initialize_SCp(Scsi_Cmnd *cmd)
          * various queues are valid.
          */
 
-        if (cmd->use_sg) {
-                cmd->SCp.buffer = (struct scatterlist *)cmd->request_buffer;
-                cmd->SCp.buffers_residual = cmd->use_sg - 1;
+        if (scsi_bufflen(cmd)) {
+                cmd->SCp.buffer = scsi_sglist(cmd);
+                cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
                 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
                 cmd->SCp.this_residual = cmd->SCp.buffer->length;
                 /* ++roman: Try to merge some scatter-buffers if they are at
@@ -523,8 +523,8 @@ static inline void initialize_SCp(Scsi_Cmnd *cmd)
         } else {
                 cmd->SCp.buffer = NULL;
                 cmd->SCp.buffers_residual = 0;
-                cmd->SCp.ptr = (char *)cmd->request_buffer;
-                cmd->SCp.this_residual = cmd->request_bufflen;
+                cmd->SCp.ptr = NULL;
+                cmd->SCp.this_residual = 0;
         }
 }
 
@@ -936,21 +936,21 @@ static int NCR5380_queue_command(Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *))
         }
 # endif
 # ifdef NCR5380_STAT_LIMIT
-        if (cmd->request_bufflen > NCR5380_STAT_LIMIT)
+        if (scsi_bufflen(cmd) > NCR5380_STAT_LIMIT)
 # endif
                 switch (cmd->cmnd[0]) {
                 case WRITE:
                 case WRITE_6:
                 case WRITE_10:
                         hostdata->time_write[cmd->device->id] -= (jiffies - hostdata->timebase);
-                        hostdata->bytes_write[cmd->device->id] += cmd->request_bufflen;
+                        hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);
                         hostdata->pendingw++;
                         break;
                 case READ:
                 case READ_6:
                 case READ_10:
                         hostdata->time_read[cmd->device->id] -= (jiffies - hostdata->timebase);
-                        hostdata->bytes_read[cmd->device->id] += cmd->request_bufflen;
+                        hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);
                         hostdata->pendingr++;
                         break;
                 }
@@ -1352,21 +1352,21 @@ static irqreturn_t NCR5380_intr(int irq, void *dev_id)
 static void collect_stats(struct NCR5380_hostdata* hostdata, Scsi_Cmnd *cmd)
 {
 # ifdef NCR5380_STAT_LIMIT
-        if (cmd->request_bufflen > NCR5380_STAT_LIMIT)
+        if (scsi_bufflen(cmd) > NCR5380_STAT_LIMIT)
 # endif
                 switch (cmd->cmnd[0]) {
                 case WRITE:
                 case WRITE_6:
                 case WRITE_10:
                         hostdata->time_write[cmd->device->id] += (jiffies - hostdata->timebase);
-                        /*hostdata->bytes_write[cmd->device->id] += cmd->request_bufflen;*/
+                        /*hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);*/
                         hostdata->pendingw--;
                         break;
                 case READ:
                 case READ_6:
                 case READ_10:
                         hostdata->time_read[cmd->device->id] += (jiffies - hostdata->timebase);
-                        /*hostdata->bytes_read[cmd->device->id] += cmd->request_bufflen;*/
+                        /*hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);*/
                         hostdata->pendingr--;
                         break;
                 }
@@ -1868,7 +1868,7 @@ static int do_abort(struct Scsi_Host *host)
          * the target sees, so we just handshake.
          */
 
-        while (!(tmp = NCR5380_read(STATUS_REG)) & SR_REQ)
+        while (!((tmp = NCR5380_read(STATUS_REG)) & SR_REQ))
                 ;
 
         NCR5380_write(TARGET_COMMAND_REG, PHASE_SR_TO_TCR(tmp));
diff --git a/drivers/scsi/atp870u.c b/drivers/scsi/atp870u.c
index fec58cc47f1c..db6de5e6afb3 100644
--- a/drivers/scsi/atp870u.c
+++ b/drivers/scsi/atp870u.c
@@ -471,18 +471,8 @@ go_42:
                         /*
                          *      Complete the command
                          */
-                        if (workreq->use_sg) {
-                                pci_unmap_sg(dev->pdev,
-                                        (struct scatterlist *)workreq->request_buffer,
-                                        workreq->use_sg,
-                                        workreq->sc_data_direction);
-                        } else if (workreq->request_bufflen &&
-                                        workreq->sc_data_direction != DMA_NONE) {
-                                pci_unmap_single(dev->pdev,
-                                        workreq->SCp.dma_handle,
-                                        workreq->request_bufflen,
-                                        workreq->sc_data_direction);
-                        }                       
+                        scsi_dma_unmap(workreq);
+
                         spin_lock_irqsave(dev->host->host_lock, flags);
                         (*workreq->scsi_done) (workreq);
 #ifdef ED_DBGP
@@ -624,7 +614,7 @@ static int atp870u_queuecommand(struct scsi_cmnd * req_p,
 
         c = scmd_channel(req_p);
         req_p->sense_buffer[0]=0;
-        req_p->resid = 0;
+        scsi_set_resid(req_p, 0);
         if (scmd_channel(req_p) > 1) {
                 req_p->result = 0x00040000;
                 done(req_p);
@@ -722,7 +712,6 @@ static void send_s870(struct atp_unit *dev,unsigned char c)
         unsigned short int tmpcip, w;
         unsigned long l, bttl = 0;
         unsigned int workport;
-        struct scatterlist *sgpnt;
         unsigned long  sg_count;
 
         if (dev->in_snd[c] != 0) {
@@ -793,6 +782,8 @@ oktosend:
         }
         printk("\n");
 #endif  
+        l = scsi_bufflen(workreq);
+
         if (dev->dev_id == ATP885_DEVID) {
                 j = inb(dev->baseport + 0x29) & 0xfe;
                 outb(j, dev->baseport + 0x29);
@@ -800,12 +791,11 @@ oktosend:
         }
         
         if (workreq->cmnd[0] == READ_CAPACITY) {
-                if (workreq->request_bufflen > 8) {
-                        workreq->request_bufflen = 0x08;
-                }
+                if (l > 8)
+                        l = 8;
         }
         if (workreq->cmnd[0] == 0x00) {
-                workreq->request_bufflen = 0;
+                l = 0;
         }
 
         tmport = workport + 0x1b;
@@ -852,40 +842,8 @@ oktosend:
 #ifdef ED_DBGP  
         printk("dev->id[%d][%d].devsp = %2x\n",c,target_id,dev->id[c][target_id].devsp);
 #endif
-        /*
-         *      Figure out the transfer size
-         */
-        if (workreq->use_sg) {
-#ifdef ED_DBGP
-                printk("Using SGL\n");
-#endif          
-                l = 0;
-                
-                sgpnt = (struct scatterlist *) workreq->request_buffer;
-                sg_count = pci_map_sg(dev->pdev, sgpnt, workreq->use_sg,
-                                workreq->sc_data_direction);            
-                
-                for (i = 0; i < workreq->use_sg; i++) {
-                        if (sgpnt[i].length == 0 || workreq->use_sg > ATP870U_SCATTER) {
-                                panic("Foooooooood fight!");
-                        }
-                        l += sgpnt[i].length;
-                }
-#ifdef ED_DBGP          
-                printk( "send_s870: workreq->use_sg %d, sg_count %d l %8ld\n", workreq->use_sg, sg_count, l);
-#endif
-        } else if(workreq->request_bufflen && workreq->sc_data_direction != PCI_DMA_NONE) {
-#ifdef ED_DBGP
-                printk("Not using SGL\n");
-#endif                                  
-                workreq->SCp.dma_handle = pci_map_single(dev->pdev, workreq->request_buffer,
-                                workreq->request_bufflen,
-                                workreq->sc_data_direction);            
-                l = workreq->request_bufflen;
-#ifdef ED_DBGP          
-                printk( "send_s870: workreq->use_sg %d, l %8ld\n", workreq->use_sg, l);
-#endif
-        } else l = 0;
+
+        sg_count = scsi_dma_map(workreq);
         /*
          *      Write transfer size
          */
@@ -938,16 +896,16 @@ oktosend:
          *      a linear chain.
          */
 
-        if (workreq->use_sg) {
-                sgpnt = (struct scatterlist *) workreq->request_buffer;
+        if (l) {
+                struct scatterlist *sgpnt;
                 i = 0;
-                for (j = 0; j < workreq->use_sg; j++) {
-                        bttl = sg_dma_address(&sgpnt[j]);
-                        l=sg_dma_len(&sgpnt[j]);
+                scsi_for_each_sg(workreq, sgpnt, sg_count, j) {
+                        bttl = sg_dma_address(sgpnt);
+                        l=sg_dma_len(sgpnt);
 #ifdef ED_DBGP          
-                printk("1. bttl %x, l %x\n",bttl, l);
+                        printk("1. bttl %x, l %x\n",bttl, l);
 #endif                  
-                while (l > 0x10000) {
+                        while (l > 0x10000) {
                                 (((u16 *) (prd))[i + 3]) = 0x0000;
                                 (((u16 *) (prd))[i + 2]) = 0x0000;
                                 (((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
@@ -965,32 +923,6 @@ oktosend:
                 printk("prd %4x %4x %4x %4x\n",(((unsigned short int *)prd)[0]),(((unsigned short int *)prd)[1]),(((unsigned short int *)prd)[2]),(((unsigned short int *)prd)[3]));
                 printk("2. bttl %x, l %x\n",bttl, l);
 #endif                  
-        } else {
-                /*
-                 *      For a linear request write a chain of blocks
-                 */        
-                bttl = workreq->SCp.dma_handle;
-                l = workreq->request_bufflen;
-                i = 0;
-#ifdef ED_DBGP          
-                printk("3. bttl %x, l %x\n",bttl, l);
-#endif                  
-                while (l > 0x10000) {
-                                (((u16 *) (prd))[i + 3]) = 0x0000;
-                                (((u16 *) (prd))[i + 2]) = 0x0000;
-                                (((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
-                                l -= 0x10000;
-                                bttl += 0x10000;
-                                i += 0x04;
-                        }
-                        (((u16 *) (prd))[i + 3]) = cpu_to_le16(0x8000);
-                        (((u16 *) (prd))[i + 2]) = cpu_to_le16(l);
-                        (((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);          
-#ifdef ED_DBGP          
-                printk("prd %4x %4x %4x %4x\n",(((unsigned short int *)prd)[0]),(((unsigned short int *)prd)[1]),(((unsigned short int *)prd)[2]),(((unsigned short int *)prd)[3]));
-                printk("4. bttl %x, l %x\n",bttl, l);
-#endif                  
-                
         }
         tmpcip += 4;
 #ifdef ED_DBGP          
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index 2311019304c0..7aad15436d24 100644
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -21,6 +21,7 @@
 #include <linux/compat.h>
 #include <linux/chio.h>                 /* here are all the ioctls */
 #include <linux/mutex.h>
+#include <linux/idr.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -33,6 +34,7 @@
 
 #define CH_DT_MAX       16
 #define CH_TYPES        8
+#define CH_MAX_DEVS     128
 
 MODULE_DESCRIPTION("device driver for scsi media changer devices");
 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org>");
@@ -88,17 +90,6 @@ static const char * vendor_labels[CH_TYPES-4] = {
 
 #define MAX_RETRIES   1
 
-static int  ch_probe(struct device *);
-static int  ch_remove(struct device *);
-static int  ch_open(struct inode * inode, struct file * filp);
-static int  ch_release(struct inode * inode, struct file * filp);
-static int  ch_ioctl(struct inode * inode, struct file * filp,
-                     unsigned int cmd, unsigned long arg);
-#ifdef CONFIG_COMPAT
-static long ch_ioctl_compat(struct file * filp,
-                            unsigned int cmd, unsigned long arg);
-#endif
-
 static struct class * ch_sysfs_class;
 
 typedef struct {
@@ -114,30 +105,8 @@ typedef struct {
         struct mutex        lock;
 } scsi_changer;
 
-static LIST_HEAD(ch_devlist);
-static DEFINE_SPINLOCK(ch_devlist_lock);
-static int ch_devcount;
-
-static struct scsi_driver ch_template =
-{
-        .owner          = THIS_MODULE,
-        .gendrv         = {
-                .name   = "ch",
-                .probe  = ch_probe,
-                .remove = ch_remove,
-        },
-};
-
-static const struct file_operations changer_fops =
-{
-        .owner        = THIS_MODULE,
-        .open         = ch_open,
-        .release      = ch_release,
-        .ioctl        = ch_ioctl,
-#ifdef CONFIG_COMPAT
-        .compat_ioctl = ch_ioctl_compat,
-#endif
-};
+static DEFINE_IDR(ch_index_idr);
+static DEFINE_SPINLOCK(ch_index_lock);
 
 static const struct {
         unsigned char  sense;
@@ -207,7 +176,7 @@ ch_do_scsi(scsi_changer *ch, unsigned char *cmd,
 {
         int errno, retries = 0, timeout, result;
         struct scsi_sense_hdr sshdr;
-        
+
         timeout = (cmd[0] == INITIALIZE_ELEMENT_STATUS)
                 ? timeout_init : timeout_move;
 
@@ -245,7 +214,7 @@ static int
 ch_elem_to_typecode(scsi_changer *ch, u_int elem)
 {
         int i;
-        
+
         for (i = 0; i < CH_TYPES; i++) {
                 if (elem >= ch->firsts[i]  &&
                     elem <  ch->firsts[i] +
@@ -261,15 +230,15 @@ ch_read_element_status(scsi_changer *ch, u_int elem, char *data)
         u_char  cmd[12];
         u_char  *buffer;
         int     result;
-        
+
         buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
         if(!buffer)
                 return -ENOMEM;
-        
+
  retry:
         memset(cmd,0,sizeof(cmd));
         cmd[0] = READ_ELEMENT_STATUS;
-        cmd[1] = (ch->device->lun << 5) | 
+        cmd[1] = (ch->device->lun << 5) |
                 (ch->voltags ? 0x10 : 0) |
                 ch_elem_to_typecode(ch,elem);
         cmd[2] = (elem >> 8) & 0xff;
@@ -296,7 +265,7 @@ ch_read_element_status(scsi_changer *ch, u_int elem, char *data)
         return result;
 }
 
-static int 
+static int
 ch_init_elem(scsi_changer *ch)
 {
         int err;
@@ -322,7 +291,7 @@ ch_readconfig(scsi_changer *ch)
         buffer = kzalloc(512, GFP_KERNEL | GFP_DMA);
         if (!buffer)
                 return -ENOMEM;
-        
+
         memset(cmd,0,sizeof(cmd));
         cmd[0] = MODE_SENSE;
         cmd[1] = ch->device->lun << 5;
@@ -365,7 +334,7 @@ ch_readconfig(scsi_changer *ch)
         } else {
                 vprintk("reading element address assigment page failed!\n");
         }
-        
+
         /* vendor specific element types */
         for (i = 0; i < 4; i++) {
                 if (0 == vendor_counts[i])
@@ -443,7 +412,7 @@ static int
 ch_position(scsi_changer *ch, u_int trans, u_int elem, int rotate)
 {
         u_char  cmd[10];
-        
+
         dprintk("position: 0x%x\n",elem);
         if (0 == trans)
                 trans = ch->firsts[CHET_MT];
@@ -462,7 +431,7 @@ static int
 ch_move(scsi_changer *ch, u_int trans, u_int src, u_int dest, int rotate)
 {
         u_char  cmd[12];
-        
+
         dprintk("move: 0x%x => 0x%x\n",src,dest);
         if (0 == trans)
                 trans = ch->firsts[CHET_MT];
@@ -484,7 +453,7 @@ ch_exchange(scsi_changer *ch, u_int trans, u_int src,
             u_int dest1, u_int dest2, int rotate1, int rotate2)
 {
         u_char  cmd[12];
-        
+
         dprintk("exchange: 0x%x => 0x%x => 0x%x\n",
                 src,dest1,dest2);
         if (0 == trans)
@@ -501,7 +470,7 @@ ch_exchange(scsi_changer *ch, u_int trans, u_int src,
         cmd[8]  = (dest2 >> 8) & 0xff;
         cmd[9]  =  dest2       & 0xff;
         cmd[10] = (rotate1 ? 1 : 0) | (rotate2 ? 2 : 0);
-        
+
         return ch_do_scsi(ch, cmd, NULL,0, DMA_NONE);
 }
 
@@ -539,14 +508,14 @@ ch_set_voltag(scsi_changer *ch, u_int elem,
                 elem, tag);
         memset(cmd,0,sizeof(cmd));
         cmd[0]  = SEND_VOLUME_TAG;
-        cmd[1] = (ch->device->lun << 5) | 
+        cmd[1] = (ch->device->lun << 5) |
                 ch_elem_to_typecode(ch,elem);
         cmd[2] = (elem >> 8) & 0xff;
         cmd[3] = elem        & 0xff;
         cmd[5] = clear
                 ? (alternate ? 0x0d : 0x0c)
                 : (alternate ? 0x0b : 0x0a);
-        
+
         cmd[9] = 255;
 
         memcpy(buffer,tag,32);
@@ -562,7 +531,7 @@ static int ch_gstatus(scsi_changer *ch, int type, unsigned char __user *dest)
         int retval = 0;
         u_char data[16];
         unsigned int i;
-        
+
         mutex_lock(&ch->lock);
         for (i = 0; i < ch->counts[type]; i++) {
                 if (0 != ch_read_element_status
@@ -599,20 +568,17 @@ ch_release(struct inode *inode, struct file *file)
 static int
 ch_open(struct inode *inode, struct file *file)
 {
-        scsi_changer *tmp, *ch;
+        scsi_changer *ch;
         int minor = iminor(inode);
 
-        spin_lock(&ch_devlist_lock);
-        ch = NULL;
-        list_for_each_entry(tmp,&ch_devlist,list) {
-                if (tmp->minor == minor)
-                        ch = tmp;
-        }
+        spin_lock(&ch_index_lock);
+        ch = idr_find(&ch_index_idr, minor);
+
         if (NULL == ch || scsi_device_get(ch->device)) {
-                spin_unlock(&ch_devlist_lock);
+                spin_unlock(&ch_index_lock);
                 return -ENXIO;
         }
-        spin_unlock(&ch_devlist_lock);
+        spin_unlock(&ch_index_lock);
 
         file->private_data = ch;
         return 0;
@@ -626,24 +592,24 @@ ch_checkrange(scsi_changer *ch, unsigned int type, unsigned int unit)
         return 0;
 }
 
-static int ch_ioctl(struct inode * inode, struct file * file,
+static long ch_ioctl(struct file *file,
                     unsigned int cmd, unsigned long arg)
 {
         scsi_changer *ch = file->private_data;
         int retval;
         void __user *argp = (void __user *)arg;
-        
+
         switch (cmd) {
         case CHIOGPARAMS:
         {
                 struct changer_params params;
-                
+
                 params.cp_curpicker = 0;
                 params.cp_npickers  = ch->counts[CHET_MT];
                 params.cp_nslots    = ch->counts[CHET_ST];
                 params.cp_nportals  = ch->counts[CHET_IE];
                 params.cp_ndrives   = ch->counts[CHET_DT];
-                
+
                 if (copy_to_user(argp, &params, sizeof(params)))
                         return -EFAULT;
                 return 0;
@@ -673,11 +639,11 @@ static int ch_ioctl(struct inode * inode, struct file * file,
                         return -EFAULT;
                 return 0;
         }
-        
+
         case CHIOPOSITION:
         {
                 struct changer_position pos;
-                
+
                 if (copy_from_user(&pos, argp, sizeof (pos)))
                         return -EFAULT;
 
@@ -692,7 +658,7 @@ static int ch_ioctl(struct inode * inode, struct file * file,
                 mutex_unlock(&ch->lock);
                 return retval;
         }
-        
+
         case CHIOMOVE:
         {
                 struct changer_move mv;
@@ -705,7 +671,7 @@ static int ch_ioctl(struct inode * inode, struct file * file,
                         dprintk("CHIOMOVE: invalid parameter\n");
                         return -EBADSLT;
                 }
-                
+
                 mutex_lock(&ch->lock);
                 retval = ch_move(ch,0,
                                  ch->firsts[mv.cm_fromtype] + mv.cm_fromunit,
@@ -718,7 +684,7 @@ static int ch_ioctl(struct inode * inode, struct file * file,
         case CHIOEXCHANGE:
         {
                 struct changer_exchange mv;
-                
+
                 if (copy_from_user(&mv, argp, sizeof (mv)))
                         return -EFAULT;
 
@@ -728,7 +694,7 @@ static int ch_ioctl(struct inode * inode, struct file * file,
                         dprintk("CHIOEXCHANGE: invalid parameter\n");
                         return -EBADSLT;
                 }
-                
+
                 mutex_lock(&ch->lock);
                 retval = ch_exchange
                         (ch,0,
@@ -743,7 +709,7 @@ static int ch_ioctl(struct inode * inode, struct file * file,
         case CHIOGSTATUS:
         {
                 struct changer_element_status ces;
-                
+
                 if (copy_from_user(&ces, argp, sizeof (ces)))
                         return -EFAULT;
                 if (ces.ces_type < 0 || ces.ces_type >= CH_TYPES)
@@ -759,19 +725,19 @@ static int ch_ioctl(struct inode * inode, struct file * file,
                 u_char  *buffer;
                 unsigned int elem;
                 int     result,i;
-                
+
                 if (copy_from_user(&cge, argp, sizeof (cge)))
                         return -EFAULT;
 
                 if (0 != ch_checkrange(ch, cge.cge_type, cge.cge_unit))
                         return -EINVAL;
                 elem = ch->firsts[cge.cge_type] + cge.cge_unit;
-                
+
                 buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
                 if (!buffer)
                         return -ENOMEM;
                 mutex_lock(&ch->lock);
-                
+
         voltag_retry:
                 memset(cmd,0,sizeof(cmd));
                 cmd[0] = READ_ELEMENT_STATUS;
@@ -782,7 +748,7 @@ static int ch_ioctl(struct inode * inode, struct file * file,
                 cmd[3] = elem        & 0xff;
                 cmd[5] = 1;
                 cmd[9] = 255;
-                
+
                 if (0 == (result = ch_do_scsi(ch, cmd, buffer, 256, DMA_FROM_DEVICE))) {
                         cge.cge_status = buffer[18];
                         cge.cge_flags = 0;
@@ -822,7 +788,7 @@ static int ch_ioctl(struct inode * inode, struct file * file,
                 }
                 kfree(buffer);
                 mutex_unlock(&ch->lock);
-                
+
                 if (copy_to_user(argp, &cge, sizeof (cge)))
                         return -EFAULT;
                 return result;
@@ -835,7 +801,7 @@ static int ch_ioctl(struct inode * inode, struct file * file,
                 mutex_unlock(&ch->lock);
                 return retval;
         }
-                
+
         case CHIOSVOLTAG:
         {
                 struct changer_set_voltag csv;
@@ -876,7 +842,7 @@ static long ch_ioctl_compat(struct file * file,
                             unsigned int cmd, unsigned long arg)
 {
         scsi_changer *ch = file->private_data;
-        
+
         switch (cmd) {
         case CHIOGPARAMS:
         case CHIOGVPARAMS:
@@ -887,13 +853,12 @@ static long ch_ioctl_compat(struct file * file,
         case CHIOINITELEM:
         case CHIOSVOLTAG:
                 /* compatible */
-                return ch_ioctl(NULL /* inode, unused */,
-                                file, cmd, arg);
+                return ch_ioctl(file, cmd, arg);
         case CHIOGSTATUS32:
         {
                 struct changer_element_status32 ces32;
                 unsigned char __user *data;
-                
+
                 if (copy_from_user(&ces32, (void __user *)arg, sizeof (ces32)))
                         return -EFAULT;
                 if (ces32.ces_type < 0 || ces32.ces_type >= CH_TYPES)
@@ -915,63 +880,100 @@ static long ch_ioctl_compat(struct file * file,
 static int ch_probe(struct device *dev)
 {
         struct scsi_device *sd = to_scsi_device(dev);
+        struct class_device *class_dev;
+        int minor, ret = -ENOMEM;
         scsi_changer *ch;
-        
+
         if (sd->type != TYPE_MEDIUM_CHANGER)
                 return -ENODEV;
-    
+
         ch = kzalloc(sizeof(*ch), GFP_KERNEL);
         if (NULL == ch)
                 return -ENOMEM;
 
-        ch->minor = ch_devcount;
+        if (!idr_pre_get(&ch_index_idr, GFP_KERNEL))
+                goto free_ch;
+
+        spin_lock(&ch_index_lock);
+        ret = idr_get_new(&ch_index_idr, ch, &minor);
+        spin_unlock(&ch_index_lock);
+
+        if (ret)
+                goto free_ch;
+
+        if (minor > CH_MAX_DEVS) {
+                ret = -ENODEV;
+                goto remove_idr;
+        }
+
+        ch->minor = minor;
         sprintf(ch->name,"ch%d",ch->minor);
+
+        class_dev = class_device_create(ch_sysfs_class, NULL,
+                                        MKDEV(SCSI_CHANGER_MAJOR, ch->minor),
+                                        dev, "s%s", ch->name);
+        if (IS_ERR(class_dev)) {
+                printk(KERN_WARNING "ch%d: class_device_create failed\n",
+                       ch->minor);
+                ret = PTR_ERR(class_dev);
+                goto remove_idr;
+        }
+
         mutex_init(&ch->lock);
         ch->device = sd;
         ch_readconfig(ch);
         if (init)
                 ch_init_elem(ch);
 
-        class_device_create(ch_sysfs_class, NULL,
-                            MKDEV(SCSI_CHANGER_MAJOR,ch->minor),
-                            dev, "s%s", ch->name);
-
+        dev_set_drvdata(dev, ch);
         sdev_printk(KERN_INFO, sd, "Attached scsi changer %s\n", ch->name);
-        
-        spin_lock(&ch_devlist_lock);
-        list_add_tail(&ch->list,&ch_devlist);
-        ch_devcount++;
-        spin_unlock(&ch_devlist_lock);
+
         return 0;
+remove_idr:
+        idr_remove(&ch_index_idr, minor);
+free_ch:
+        kfree(ch);
+        return ret;
 }
 
 static int ch_remove(struct device *dev)
 {
-        struct scsi_device *sd = to_scsi_device(dev);
-        scsi_changer *tmp, *ch;
+        scsi_changer *ch = dev_get_drvdata(dev);
 
-        spin_lock(&ch_devlist_lock);
-        ch = NULL;
-        list_for_each_entry(tmp,&ch_devlist,list) {
-                if (tmp->device == sd)
-                        ch = tmp;
-        }
-        BUG_ON(NULL == ch);
-        list_del(&ch->list);
-        spin_unlock(&ch_devlist_lock);
+        spin_lock(&ch_index_lock);
+        idr_remove(&ch_index_idr, ch->minor);
+        spin_unlock(&ch_index_lock);
 
         class_device_destroy(ch_sysfs_class,
                              MKDEV(SCSI_CHANGER_MAJOR,ch->minor));
         kfree(ch->dt);
         kfree(ch);
-        ch_devcount--;
         return 0;
 }
 
+static struct scsi_driver ch_template = {
+        .owner          = THIS_MODULE,
+        .gendrv         = {
+                .name   = "ch",
+                .probe  = ch_probe,
+                .remove = ch_remove,
+        },
+};
+
+static const struct file_operations changer_fops = {
+        .owner          = THIS_MODULE,
+        .open           = ch_open,
+        .release        = ch_release,
+        .unlocked_ioctl = ch_ioctl,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl   = ch_ioctl_compat,
+#endif
+};
+
 static int __init init_ch_module(void)
 {
         int rc;
-        
+
         printk(KERN_INFO "SCSI Media Changer driver v" VERSION " \n");
         ch_sysfs_class = class_create(THIS_MODULE, "scsi_changer");
         if (IS_ERR(ch_sysfs_class)) {
@@ -996,11 +998,12 @@ static int __init init_ch_module(void)
         return rc;
 }
 
-static void __exit exit_ch_module(void) 
+static void __exit exit_ch_module(void)
 {
         scsi_unregister_driver(&ch_template.gendrv);
         unregister_chrdev(SCSI_CHANGER_MAJOR, "ch");
         class_destroy(ch_sysfs_class);
+        idr_destroy(&ch_index_idr);
 }
 
 module_init(init_ch_module);
diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
index 024553f9c247..403a7f2d8f9b 100644
--- a/drivers/scsi/constants.c
+++ b/drivers/scsi/constants.c
@@ -362,7 +362,6 @@ void scsi_print_command(struct scsi_cmnd *cmd)
 EXPORT_SYMBOL(scsi_print_command);
 
 /**
- *
  *      scsi_print_status - print scsi status description
  *      @scsi_status: scsi status value
  *
@@ -1369,7 +1368,7 @@ EXPORT_SYMBOL(scsi_print_sense);
 static const char * const hostbyte_table[]={
 "DID_OK", "DID_NO_CONNECT", "DID_BUS_BUSY", "DID_TIME_OUT", "DID_BAD_TARGET",
 "DID_ABORT", "DID_PARITY", "DID_ERROR", "DID_RESET", "DID_BAD_INTR",
-"DID_PASSTHROUGH", "DID_SOFT_ERROR", "DID_IMM_RETRY"};
+"DID_PASSTHROUGH", "DID_SOFT_ERROR", "DID_IMM_RETRY", "DID_REQUEUE"};
 #define NUM_HOSTBYTE_STRS ARRAY_SIZE(hostbyte_table)
 
 static const char * const driverbyte_table[]={
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index a9def6e1d30e..f93c73c0ba53 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -1629,8 +1629,7 @@ static u8 start_scsi(struct AdapterCtlBlk* acb, struct DeviceCtlBlk* dcb,
                 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5));
                 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
                 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
-                DC395x_write8(acb, TRM_S1040_SCSI_FIFO,
-                              sizeof(srb->cmd->sense_buffer));
+                DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SCSI_SENSE_BUFFERSIZE);
                 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
         } else {
                 ptr = (u8 *)srb->cmd->cmnd;
@@ -1915,8 +1914,7 @@ static void command_phase1(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
                 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, (dcb->target_lun << 5));
                 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
                 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
-                DC395x_write8(acb, TRM_S1040_SCSI_FIFO,
-                              sizeof(srb->cmd->sense_buffer));
+                DC395x_write8(acb, TRM_S1040_SCSI_FIFO, SCSI_SENSE_BUFFERSIZE);
                 DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 0);
         }
         srb->state |= SRB_COMMAND;
@@ -3685,7 +3683,7 @@ static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
         srb->target_status = 0;
 
         /* KG: Can this prevent crap sense data ? */
-        memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+        memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
 
         /* Save some data */
         srb->segment_x[DC395x_MAX_SG_LISTENTRY - 1].address =
@@ -3694,15 +3692,15 @@ static void request_sense(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
             srb->segment_x[0].length;
         srb->xferred = srb->total_xfer_length;
         /* srb->segment_x : a one entry of S/G list table */
-        srb->total_xfer_length = sizeof(cmd->sense_buffer);
-        srb->segment_x[0].length = sizeof(cmd->sense_buffer);
+        srb->total_xfer_length = SCSI_SENSE_BUFFERSIZE;
+        srb->segment_x[0].length = SCSI_SENSE_BUFFERSIZE;
         /* Map sense buffer */
         srb->segment_x[0].address =
             pci_map_single(acb->dev, cmd->sense_buffer,
-                           sizeof(cmd->sense_buffer), PCI_DMA_FROMDEVICE);
+                           SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE);
         dprintkdbg(DBG_SG, "request_sense: map buffer %p->%08x(%05x)\n",
                cmd->sense_buffer, srb->segment_x[0].address,
-               sizeof(cmd->sense_buffer));
+               SCSI_SENSE_BUFFERSIZE);
         srb->sg_count = 1;
         srb->sg_index = 0;
 
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index b31d1c95c9fb..19cce125124c 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -2296,9 +2296,8 @@ static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd)
 
                 // copy over the request sense data if it was a check
                 // condition status
-                if(dev_status == 0x02 /*CHECK_CONDITION*/) {
-                        u32 len = sizeof(cmd->sense_buffer);
-                        len = (len > 40) ?  40 : len;
+                if (dev_status == SAM_STAT_CHECK_CONDITION) {
+                        u32 len = min(SCSI_SENSE_BUFFERSIZE, 40);
                         // Copy over the sense data
                         memcpy_fromio(cmd->sense_buffer, (reply+28) , len);
                         if(cmd->sense_buffer[0] == 0x70 /* class 7 */ && 
diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c
index 7ead5210de96..05163cefec12 100644
--- a/drivers/scsi/eata.c
+++ b/drivers/scsi/eata.c
@@ -1623,9 +1623,9 @@ static void map_dma(unsigned int i, struct hostdata *ha)
         if (SCpnt->sense_buffer)
                 cpp->sense_addr =
                     H2DEV(pci_map_single(ha->pdev, SCpnt->sense_buffer,
-                           sizeof SCpnt->sense_buffer, PCI_DMA_FROMDEVICE));
+                           SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE));
 
-        cpp->sense_len = sizeof SCpnt->sense_buffer;
+        cpp->sense_len = SCSI_SENSE_BUFFERSIZE;
 
         count = scsi_dma_map(SCpnt);
         BUG_ON(count < 0);
diff --git a/drivers/scsi/eata_pio.c b/drivers/scsi/eata_pio.c
index 982c5092be11..b5a60926e556 100644
--- a/drivers/scsi/eata_pio.c
+++ b/drivers/scsi/eata_pio.c
@@ -369,7 +369,6 @@ static int eata_pio_queue(struct scsi_cmnd *cmd,
         cp = &hd->ccb[y];
 
         memset(cp, 0, sizeof(struct eata_ccb));
-        memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
 
         cp->status = USED;      /* claim free slot */
 
@@ -385,7 +384,7 @@ static int eata_pio_queue(struct scsi_cmnd *cmd,
                 cp->DataIn = 0; /* Input mode  */
 
         cp->Interpret = (cmd->device->id == hd->hostid);
-        cp->cp_datalen = cpu_to_be32(cmd->request_bufflen);
+        cp->cp_datalen = cpu_to_be32(scsi_bufflen(cmd));
         cp->Auto_Req_Sen = 0;
         cp->cp_reqDMA = 0;
         cp->reqlen = 0;
@@ -402,14 +401,14 @@ static int eata_pio_queue(struct scsi_cmnd *cmd,
         cp->cmd = cmd;
         cmd->host_scribble = (char *) &hd->ccb[y];
 
-        if (cmd->use_sg == 0) {
+        if (!scsi_bufflen(cmd)) {
                 cmd->SCp.buffers_residual = 1;
-                cmd->SCp.ptr = cmd->request_buffer;
-                cmd->SCp.this_residual = cmd->request_bufflen;
+                cmd->SCp.ptr = NULL;
+                cmd->SCp.this_residual = 0;
                 cmd->SCp.buffer = NULL;
         } else {
-                cmd->SCp.buffer = cmd->request_buffer;
-                cmd->SCp.buffers_residual = cmd->use_sg;
+                cmd->SCp.buffer = scsi_sglist(cmd);
+                cmd->SCp.buffers_residual = scsi_sg_count(cmd);
                 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
                 cmd->SCp.this_residual = cmd->SCp.buffer->length;
         }
diff --git a/drivers/scsi/fd_mcs.c b/drivers/scsi/fd_mcs.c
index 8335b608e571..85bd54c77b50 100644
--- a/drivers/scsi/fd_mcs.c
+++ b/drivers/scsi/fd_mcs.c
@@ -1017,24 +1017,6 @@ static irqreturn_t fd_mcs_intr(int irq, void *dev_id)
                 printk(" ** IN DONE %d ** ", current_SC->SCp.have_data_in);
 #endif
 
-#if ERRORS_ONLY
-                if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) {
-                        if ((unsigned char) (*((char *) current_SC->request_buffer + 2)) & 0x0f) {
-                                unsigned char key;
-                                unsigned char code;
-                                unsigned char qualifier;
-
-                                key = (unsigned char) (*((char *) current_SC->request_buffer + 2)) & 0x0f;
-                                code = (unsigned char) (*((char *) current_SC->request_buffer + 12));
-                                qualifier = (unsigned char) (*((char *) current_SC->request_buffer + 13));
-
-                                if (key != UNIT_ATTENTION && !(key == NOT_READY && code == 0x04 && (!qualifier || qualifier == 0x02 || qualifier == 0x01))
-                                    && !(key == ILLEGAL_REQUEST && (code == 0x25 || code == 0x24 || !code)))
-
-                                        printk("fd_mcs: REQUEST SENSE " "Key = %x, Code = %x, Qualifier = %x\n", key, code, qualifier);
-                        }
-                }
-#endif
 #if EVERY_ACCESS
                 printk("BEFORE MY_DONE. . .");
 #endif
@@ -1097,7 +1079,9 @@ static int fd_mcs_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
                 panic("fd_mcs: fd_mcs_queue() NOT REENTRANT!\n");
         }
 #if EVERY_ACCESS
-        printk("queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n", SCpnt->target, *(unsigned char *) SCpnt->cmnd, SCpnt->use_sg, SCpnt->request_bufflen);
+        printk("queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
+                SCpnt->target, *(unsigned char *) SCpnt->cmnd,
+                scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
 #endif
 
         fd_mcs_make_bus_idle(shpnt);
@@ -1107,14 +1091,14 @@ static int fd_mcs_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
 
         /* Initialize static data */
 
-        if (current_SC->use_sg) {
-                current_SC->SCp.buffer = (struct scatterlist *) current_SC->request_buffer;
+        if (scsi_bufflen(current_SC)) {
+                current_SC->SCp.buffer = scsi_sglist(current_SC);
                 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
                 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
-                current_SC->SCp.buffers_residual = current_SC->use_sg - 1;
+                current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1;
         } else {
-                current_SC->SCp.ptr = (char *) current_SC->request_buffer;
-                current_SC->SCp.this_residual = current_SC->request_bufflen;
+                current_SC->SCp.ptr = NULL;
+                current_SC->SCp.this_residual = 0;
                 current_SC->SCp.buffer = NULL;
                 current_SC->SCp.buffers_residual = 0;
         }
@@ -1166,7 +1150,9 @@ static void fd_mcs_print_info(Scsi_Cmnd * SCpnt)
                 break;
         }
 
-        printk("(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n", SCpnt->SCp.phase, SCpnt->device->id, *(unsigned char *) SCpnt->cmnd, SCpnt->use_sg, SCpnt->request_bufflen);
+        printk("(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
+                SCpnt->SCp.phase, SCpnt->device->id, *(unsigned char *) SCpnt->cmnd,
+                scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
         printk("sent_command = %d, have_data_in = %d, timeout = %d\n", SCpnt->SCp.sent_command, SCpnt->SCp.have_data_in, SCpnt->timeout);
 #if DEBUG_RACE
         printk("in_interrupt_flag = %d\n", in_interrupt_flag);
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index b253b8c718d3..c82523908c2e 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -141,7 +141,7 @@
 static void gdth_delay(int milliseconds);
 static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs);
 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
-static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, int irq,
+static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
                                     int gdth_from_wait, int* pIndex);
 static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
                                                                Scsi_Cmnd *scp);
@@ -165,7 +165,6 @@ static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive);
 
 static void gdth_enable_int(gdth_ha_str *ha);
-static unchar gdth_get_status(gdth_ha_str *ha, int irq);
 static int gdth_test_busy(gdth_ha_str *ha);
 static int gdth_get_cmd_index(gdth_ha_str *ha);
 static void gdth_release_event(gdth_ha_str *ha);
@@ -1334,14 +1333,12 @@ static void __init gdth_enable_int(gdth_ha_str *ha)
 }
 
 /* return IStatus if interrupt was from this card else 0 */
-static unchar gdth_get_status(gdth_ha_str *ha, int irq)
+static unchar gdth_get_status(gdth_ha_str *ha)
 {
     unchar IStatus = 0;
 
-    TRACE(("gdth_get_status() irq %d ctr_count %d\n", irq, gdth_ctr_count));
+    TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
 
-        if (ha->irq != (unchar)irq)             /* check IRQ */
-            return false;
         if (ha->type == GDT_EISA)
             IStatus = inb((ushort)ha->bmic + EDOORREG);
         else if (ha->type == GDT_ISA)
@@ -1523,7 +1520,7 @@ static int gdth_wait(gdth_ha_str *ha, int index, ulong32 time)
         return 1;                               /* no wait required */
 
     do {
-        __gdth_interrupt(ha, (int)ha->irq, true, &wait_index);
+        __gdth_interrupt(ha, true, &wait_index);
         if (wait_index == index) {
             answer_found = TRUE;
             break;
@@ -3036,7 +3033,7 @@ static void gdth_clear_events(void)
 
 /* SCSI interface functions */
 
-static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, int irq,
+static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
                                     int gdth_from_wait, int* pIndex)
 {
     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
@@ -3054,7 +3051,7 @@ static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, int irq,
     int act_int_coal = 0;       
 #endif
 
-    TRACE(("gdth_interrupt() IRQ %d\n",irq));
+    TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
 
     /* if polling and not from gdth_wait() -> return */
     if (gdth_polling) {
@@ -3067,7 +3064,8 @@ static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, int irq,
         spin_lock_irqsave(&ha->smp_lock, flags);
 
     /* search controller */
-    if (0 == (IStatus = gdth_get_status(ha, irq))) {
+    IStatus = gdth_get_status(ha);
+    if (IStatus == 0) {
         /* spurious interrupt */
         if (!gdth_polling)
             spin_unlock_irqrestore(&ha->smp_lock, flags);
@@ -3294,9 +3292,9 @@ static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, int irq,
 
 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
 {
-        gdth_ha_str *ha = (gdth_ha_str *)dev_id;
+        gdth_ha_str *ha = dev_id;
 
-        return __gdth_interrupt(ha, irq, false, NULL);
+        return __gdth_interrupt(ha, false, NULL);
 }
 
 static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 6325115e5b3d..5ea1f986220c 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -54,8 +54,7 @@ static struct class shost_class = {
 };
 
 /**
- *      scsi_host_set_state - Take the given host through the host
- *              state model.
+ *      scsi_host_set_state - Take the given host through the host state model.
  *      @shost: scsi host to change the state of.
  *      @state: state to change to.
  *
@@ -440,7 +439,6 @@ static int __scsi_host_match(struct class_device *cdev, void *data)
 
 /**
  * scsi_host_lookup - get a reference to a Scsi_Host by host no
- *
  * @hostnum:    host number to locate
  *
  * Return value:
diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c
index 0844331abb87..e7b2f3575ce9 100644
--- a/drivers/scsi/hptiop.c
+++ b/drivers/scsi/hptiop.c
@@ -1,5 +1,5 @@
 /*
- * HighPoint RR3xxx controller driver for Linux
+ * HighPoint RR3xxx/4xxx controller driver for Linux
  * Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -38,80 +38,84 @@
 #include "hptiop.h"
 
 MODULE_AUTHOR("HighPoint Technologies, Inc.");
-MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx SATA Controller Driver");
+MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx/4xxx Controller Driver");
 
 static char driver_name[] = "hptiop";
-static const char driver_name_long[] = "RocketRAID 3xxx SATA Controller driver";
-static const char driver_ver[] = "v1.2 (070830)";
-
-static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag);
-static void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag);
+static const char driver_name_long[] = "RocketRAID 3xxx/4xxx Controller driver";
+static const char driver_ver[] = "v1.3 (071203)";
+
+static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec);
+static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
+                                struct hpt_iop_request_scsi_command *req);
+static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 tag);
+static void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag);
 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
 
-static inline void hptiop_pci_posting_flush(struct hpt_iopmu __iomem *iop)
-{
-        readl(&iop->outbound_intstatus);
-}
-
-static int iop_wait_ready(struct hpt_iopmu __iomem *iop, u32 millisec)
+static int iop_wait_ready_itl(struct hptiop_hba *hba, u32 millisec)
 {
         u32 req = 0;
         int i;
 
         for (i = 0; i < millisec; i++) {
-                req = readl(&iop->inbound_queue);
+                req = readl(&hba->u.itl.iop->inbound_queue);
                 if (req != IOPMU_QUEUE_EMPTY)
                         break;
                 msleep(1);
         }
 
         if (req != IOPMU_QUEUE_EMPTY) {
-                writel(req, &iop->outbound_queue);
-                hptiop_pci_posting_flush(iop);
+                writel(req, &hba->u.itl.iop->outbound_queue);
+                readl(&hba->u.itl.iop->outbound_intstatus);
                 return 0;
         }
 
         return -1;
 }
 
-static void hptiop_request_callback(struct hptiop_hba *hba, u32 tag)
+static int iop_wait_ready_mv(struct hptiop_hba *hba, u32 millisec)
+{
+        return iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_NOP, millisec);
+}
+
+static void hptiop_request_callback_itl(struct hptiop_hba *hba, u32 tag)
 {
         if (tag & IOPMU_QUEUE_ADDR_HOST_BIT)
-                return hptiop_host_request_callback(hba,
+                hptiop_host_request_callback_itl(hba,
                                 tag & ~IOPMU_QUEUE_ADDR_HOST_BIT);
         else
-                return hptiop_iop_request_callback(hba, tag);
+                hptiop_iop_request_callback_itl(hba, tag);
 }
 
-static inline void hptiop_drain_outbound_queue(struct hptiop_hba *hba)
+static void hptiop_drain_outbound_queue_itl(struct hptiop_hba *hba)
 {
         u32 req;
 
-        while ((req = readl(&hba->iop->outbound_queue)) != IOPMU_QUEUE_EMPTY) {
+        while ((req = readl(&hba->u.itl.iop->outbound_queue)) !=
+                                                IOPMU_QUEUE_EMPTY) {
 
                 if (req & IOPMU_QUEUE_MASK_HOST_BITS)
-                        hptiop_request_callback(hba, req);
+                        hptiop_request_callback_itl(hba, req);
                 else {
                         struct hpt_iop_request_header __iomem * p;
 
                         p = (struct hpt_iop_request_header __iomem *)
-                                ((char __iomem *)hba->iop + req);
+                                ((char __iomem *)hba->u.itl.iop + req);
 
                         if (readl(&p->flags) & IOP_REQUEST_FLAG_SYNC_REQUEST) {
                                 if (readl(&p->context))
-                                        hptiop_request_callback(hba, req);
+                                        hptiop_request_callback_itl(hba, req);
                                 else
                                         writel(1, &p->context);
                         }
                         else
-                                hptiop_request_callback(hba, req);
+                                hptiop_request_callback_itl(hba, req);
                 }
         }
 }
 
-static int __iop_intr(struct hptiop_hba *hba)
+static int iop_intr_itl(struct hptiop_hba *hba)
 {
-        struct hpt_iopmu __iomem *iop = hba->iop;
+        struct hpt_iopmu_itl __iomem *iop = hba->u.itl.iop;
         u32 status;
         int ret = 0;
 
@@ -119,6 +123,7 @@ static int __iop_intr(struct hptiop_hba *hba)
 
         if (status & IOPMU_OUTBOUND_INT_MSG0) {
                 u32 msg = readl(&iop->outbound_msgaddr0);
+
                 dprintk("received outbound msg %x\n", msg);
                 writel(IOPMU_OUTBOUND_INT_MSG0, &iop->outbound_intstatus);
                 hptiop_message_callback(hba, msg);
@@ -126,31 +131,115 @@ static int __iop_intr(struct hptiop_hba *hba)
         }
 
         if (status & IOPMU_OUTBOUND_INT_POSTQUEUE) {
-                hptiop_drain_outbound_queue(hba);
+                hptiop_drain_outbound_queue_itl(hba);
+                ret = 1;
+        }
+
+        return ret;
+}
+
+static u64 mv_outbound_read(struct hpt_iopmu_mv __iomem *mu)
+{
+        u32 outbound_tail = readl(&mu->outbound_tail);
+        u32 outbound_head = readl(&mu->outbound_head);
+
+        if (outbound_tail != outbound_head) {
+                u64 p;
+
+                memcpy_fromio(&p, &mu->outbound_q[mu->outbound_tail], 8);
+                outbound_tail++;
+
+                if (outbound_tail == MVIOP_QUEUE_LEN)
+                        outbound_tail = 0;
+                writel(outbound_tail, &mu->outbound_tail);
+                return p;
+        } else
+                return 0;
+}
+
+static void mv_inbound_write(u64 p, struct hptiop_hba *hba)
+{
+        u32 inbound_head = readl(&hba->u.mv.mu->inbound_head);
+        u32 head = inbound_head + 1;
+
+        if (head == MVIOP_QUEUE_LEN)
+                head = 0;
+
+        memcpy_toio(&hba->u.mv.mu->inbound_q[inbound_head], &p, 8);
+        writel(head, &hba->u.mv.mu->inbound_head);
+        writel(MVIOP_MU_INBOUND_INT_POSTQUEUE,
+                        &hba->u.mv.regs->inbound_doorbell);
+}
+
+static void hptiop_request_callback_mv(struct hptiop_hba *hba, u64 tag)
+{
+        u32 req_type = (tag >> 5) & 0x7;
+        struct hpt_iop_request_scsi_command *req;
+
+        dprintk("hptiop_request_callback_mv: tag=%llx\n", tag);
+
+        BUG_ON((tag & MVIOP_MU_QUEUE_REQUEST_RETURN_CONTEXT) == 0);
+
+        switch (req_type) {
+        case IOP_REQUEST_TYPE_GET_CONFIG:
+        case IOP_REQUEST_TYPE_SET_CONFIG:
+                hba->msg_done = 1;
+                break;
+
+        case IOP_REQUEST_TYPE_SCSI_COMMAND:
+                req = hba->reqs[tag >> 8].req_virt;
+                if (likely(tag & MVIOP_MU_QUEUE_REQUEST_RESULT_BIT))
+                        req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
+
+                hptiop_finish_scsi_req(hba, tag>>8, req);
+                break;
+
+        default:
+                break;
+        }
+}
+
+static int iop_intr_mv(struct hptiop_hba *hba)
+{
+        u32 status;
+        int ret = 0;
+
+        status = readl(&hba->u.mv.regs->outbound_doorbell);
+        writel(~status, &hba->u.mv.regs->outbound_doorbell);
+
+        if (status & MVIOP_MU_OUTBOUND_INT_MSG) {
+                u32 msg;
+                msg = readl(&hba->u.mv.mu->outbound_msg);
+                dprintk("received outbound msg %x\n", msg);
+                hptiop_message_callback(hba, msg);
+                ret = 1;
+        }
+
+        if (status & MVIOP_MU_OUTBOUND_INT_POSTQUEUE) {
+                u64 tag;
+
+                while ((tag = mv_outbound_read(hba->u.mv.mu)))
+                        hptiop_request_callback_mv(hba, tag);
                 ret = 1;
         }
 
         return ret;
 }
 
-static int iop_send_sync_request(struct hptiop_hba *hba,
+static int iop_send_sync_request_itl(struct hptiop_hba *hba,
                                         void __iomem *_req, u32 millisec)
 {
         struct hpt_iop_request_header __iomem *req = _req;
         u32 i;
 
-        writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST,
-                        &req->flags);
-
+        writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST, &req->flags);
         writel(0, &req->context);
-
-        writel((unsigned long)req - (unsigned long)hba->iop,
-                        &hba->iop->inbound_queue);
-
-        hptiop_pci_posting_flush(hba->iop);
+        writel((unsigned long)req - (unsigned long)hba->u.itl.iop,
+                        &hba->u.itl.iop->inbound_queue);
+        readl(&hba->u.itl.iop->outbound_intstatus);
 
         for (i = 0; i < millisec; i++) {
-                __iop_intr(hba);
+                iop_intr_itl(hba);
                 if (readl(&req->context))
                         return 0;
                 msleep(1);
@@ -159,19 +248,49 @@ static int iop_send_sync_request(struct hptiop_hba *hba,
         return -1;
 }
 
-static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
+static int iop_send_sync_request_mv(struct hptiop_hba *hba,
+                                        u32 size_bits, u32 millisec)
 {
+        struct hpt_iop_request_header *reqhdr = hba->u.mv.internal_req;
         u32 i;
 
         hba->msg_done = 0;
+        reqhdr->flags |= cpu_to_le32(IOP_REQUEST_FLAG_SYNC_REQUEST);
+        mv_inbound_write(hba->u.mv.internal_req_phy |
+                        MVIOP_MU_QUEUE_ADDR_HOST_BIT | size_bits, hba);
+
+        for (i = 0; i < millisec; i++) {
+                iop_intr_mv(hba);
+                if (hba->msg_done)
+                        return 0;
+                msleep(1);
+        }
+        return -1;
+}
+
+static void hptiop_post_msg_itl(struct hptiop_hba *hba, u32 msg)
+{
+        writel(msg, &hba->u.itl.iop->inbound_msgaddr0);
+        readl(&hba->u.itl.iop->outbound_intstatus);
+}
+
+static void hptiop_post_msg_mv(struct hptiop_hba *hba, u32 msg)
+{
+        writel(msg, &hba->u.mv.mu->inbound_msg);
+        writel(MVIOP_MU_INBOUND_INT_MSG, &hba->u.mv.regs->inbound_doorbell);
+        readl(&hba->u.mv.regs->inbound_doorbell);
+}
 
-        writel(msg, &hba->iop->inbound_msgaddr0);
+static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
+{
+        u32 i;
 
-        hptiop_pci_posting_flush(hba->iop);
+        hba->msg_done = 0;
+        hba->ops->post_msg(hba, msg);
 
         for (i = 0; i < millisec; i++) {
                 spin_lock_irq(hba->host->host_lock);
-                __iop_intr(hba);
+                hba->ops->iop_intr(hba);
                 spin_unlock_irq(hba->host->host_lock);
                 if (hba->msg_done)
                         break;
@@ -181,46 +300,67 @@ static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
         return hba->msg_done? 0 : -1;
 }
 
-static int iop_get_config(struct hptiop_hba *hba,
+static int iop_get_config_itl(struct hptiop_hba *hba,
                                 struct hpt_iop_request_get_config *config)
 {
         u32 req32;
         struct hpt_iop_request_get_config __iomem *req;
 
-        req32 = readl(&hba->iop->inbound_queue);
+        req32 = readl(&hba->u.itl.iop->inbound_queue);
         if (req32 == IOPMU_QUEUE_EMPTY)
                 return -1;
 
         req = (struct hpt_iop_request_get_config __iomem *)
-                        ((unsigned long)hba->iop + req32);
+                        ((unsigned long)hba->u.itl.iop + req32);
 
         writel(0, &req->header.flags);
         writel(IOP_REQUEST_TYPE_GET_CONFIG, &req->header.type);
         writel(sizeof(struct hpt_iop_request_get_config), &req->header.size);
         writel(IOP_RESULT_PENDING, &req->header.result);
 
-        if (iop_send_sync_request(hba, req, 20000)) {
+        if (iop_send_sync_request_itl(hba, req, 20000)) {
                 dprintk("Get config send cmd failed\n");
                 return -1;
         }
 
         memcpy_fromio(config, req, sizeof(*config));
-        writel(req32, &hba->iop->outbound_queue);
+        writel(req32, &hba->u.itl.iop->outbound_queue);
+        return 0;
+}
+
+static int iop_get_config_mv(struct hptiop_hba *hba,
+                                struct hpt_iop_request_get_config *config)
+{
+        struct hpt_iop_request_get_config *req = hba->u.mv.internal_req;
+
+        req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
+        req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_GET_CONFIG);
+        req->header.size =
+                cpu_to_le32(sizeof(struct hpt_iop_request_get_config));
+        req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
+        req->header.context = cpu_to_le64(IOP_REQUEST_TYPE_GET_CONFIG<<5);
+
+        if (iop_send_sync_request_mv(hba, 0, 20000)) {
+                dprintk("Get config send cmd failed\n");
+                return -1;
+        }
+
+        memcpy(config, req, sizeof(struct hpt_iop_request_get_config));
         return 0;
 }
 
-static int iop_set_config(struct hptiop_hba *hba,
+static int iop_set_config_itl(struct hptiop_hba *hba,
                                 struct hpt_iop_request_set_config *config)
 {
         u32 req32;
         struct hpt_iop_request_set_config __iomem *req;
 
-        req32 = readl(&hba->iop->inbound_queue);
+        req32 = readl(&hba->u.itl.iop->inbound_queue);
         if (req32 == IOPMU_QUEUE_EMPTY)
                 return -1;
 
         req = (struct hpt_iop_request_set_config __iomem *)
-                        ((unsigned long)hba->iop + req32);
+                        ((unsigned long)hba->u.itl.iop + req32);
 
         memcpy_toio((u8 __iomem *)req + sizeof(struct hpt_iop_request_header),
                 (u8 *)config + sizeof(struct hpt_iop_request_header),
@@ -232,22 +372,52 @@ static int iop_set_config(struct hptiop_hba *hba,
         writel(sizeof(struct hpt_iop_request_set_config), &req->header.size);
         writel(IOP_RESULT_PENDING, &req->header.result);
 
-        if (iop_send_sync_request(hba, req, 20000)) {
+        if (iop_send_sync_request_itl(hba, req, 20000)) {
                 dprintk("Set config send cmd failed\n");
                 return -1;
         }
 
-        writel(req32, &hba->iop->outbound_queue);
+        writel(req32, &hba->u.itl.iop->outbound_queue);
         return 0;
 }
 
-static int hptiop_initialize_iop(struct hptiop_hba *hba)
+static int iop_set_config_mv(struct hptiop_hba *hba,
+                                struct hpt_iop_request_set_config *config)
 {
-        struct hpt_iopmu __iomem *iop = hba->iop;
+        struct hpt_iop_request_set_config *req = hba->u.mv.internal_req;
 
-        /* enable interrupts */
+        memcpy(req, config, sizeof(struct hpt_iop_request_set_config));
+        req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
+        req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG);
+        req->header.size =
+                cpu_to_le32(sizeof(struct hpt_iop_request_set_config));
+        req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
+        req->header.context = cpu_to_le64(IOP_REQUEST_TYPE_SET_CONFIG<<5);
+
+        if (iop_send_sync_request_mv(hba, 0, 20000)) {
+                dprintk("Set config send cmd failed\n");
+                return -1;
+        }
+
+        return 0;
+}
+
+static void hptiop_enable_intr_itl(struct hptiop_hba *hba)
+{
         writel(~(IOPMU_OUTBOUND_INT_POSTQUEUE | IOPMU_OUTBOUND_INT_MSG0),
-                        &iop->outbound_intmask);
+                &hba->u.itl.iop->outbound_intmask);
+}
+
+static void hptiop_enable_intr_mv(struct hptiop_hba *hba)
+{
+        writel(MVIOP_MU_OUTBOUND_INT_POSTQUEUE | MVIOP_MU_OUTBOUND_INT_MSG,
+                &hba->u.mv.regs->outbound_intmask);
+}
+
+static int hptiop_initialize_iop(struct hptiop_hba *hba)
+{
+        /* enable interrupts */
+        hba->ops->enable_intr(hba);
 
         hba->initialized = 1;
 
@@ -261,37 +431,74 @@ static int hptiop_initialize_iop(struct hptiop_hba *hba)
         return 0;
 }
 
-static int hptiop_map_pci_bar(struct hptiop_hba *hba)
+static void __iomem *hptiop_map_pci_bar(struct hptiop_hba *hba, int index)
 {
         u32 mem_base_phy, length;
         void __iomem *mem_base_virt;
+
         struct pci_dev *pcidev = hba->pcidev;
 
-        if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_MEM)) {
+
+        if (!(pci_resource_flags(pcidev, index) & IORESOURCE_MEM)) {
                 printk(KERN_ERR "scsi%d: pci resource invalid\n",
                                 hba->host->host_no);
-                return -1;
+                return 0;
         }
 
-        mem_base_phy = pci_resource_start(pcidev, 0);
-        length = pci_resource_len(pcidev, 0);
+        mem_base_phy = pci_resource_start(pcidev, index);
+        length = pci_resource_len(pcidev, index);
         mem_base_virt = ioremap(mem_base_phy, length);
 
         if (!mem_base_virt) {
                 printk(KERN_ERR "scsi%d: Fail to ioremap memory space\n",
                                 hba->host->host_no);
+                return 0;
+        }
+        return mem_base_virt;
+}
+
+static int hptiop_map_pci_bar_itl(struct hptiop_hba *hba)
+{
+        hba->u.itl.iop = hptiop_map_pci_bar(hba, 0);
+        if (hba->u.itl.iop)
+                return 0;
+        else
+                return -1;
+}
+
+static void hptiop_unmap_pci_bar_itl(struct hptiop_hba *hba)
+{
+        iounmap(hba->u.itl.iop);
+}
+
+static int hptiop_map_pci_bar_mv(struct hptiop_hba *hba)
+{
+        hba->u.mv.regs = hptiop_map_pci_bar(hba, 0);
+        if (hba->u.mv.regs == 0)
+                return -1;
+
+        hba->u.mv.mu = hptiop_map_pci_bar(hba, 2);
+        if (hba->u.mv.mu == 0) {
+                iounmap(hba->u.mv.regs);
                 return -1;
         }
 
-        hba->iop = mem_base_virt;
-        dprintk("hptiop_map_pci_bar: iop=%p\n", hba->iop);
         return 0;
 }
 
+static void hptiop_unmap_pci_bar_mv(struct hptiop_hba *hba)
+{
+        iounmap(hba->u.mv.regs);
+        iounmap(hba->u.mv.mu);
+}
+
 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
 {
         dprintk("iop message 0x%x\n", msg);
 
+        if (msg == IOPMU_INBOUND_MSG0_NOP)
+                hba->msg_done = 1;
+
         if (!hba->initialized)
                 return;
 
@@ -303,7 +510,7 @@ static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
                 hba->msg_done = 1;
 }
 
-static inline struct hptiop_request *get_req(struct hptiop_hba *hba)
+static struct hptiop_request *get_req(struct hptiop_hba *hba)
 {
         struct hptiop_request *ret;
 
@@ -316,30 +523,19 @@ static inline struct hptiop_request *get_req(struct hptiop_hba *hba)
         return ret;
 }
 
-static inline void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
+static void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
 {
         dprintk("free_req(%d, %p)\n", req->index, req);
         req->next = hba->req_list;
         hba->req_list = req;
 }
 
-static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
+static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
+                                struct hpt_iop_request_scsi_command *req)
 {
-        struct hpt_iop_request_scsi_command *req;
         struct scsi_cmnd *scp;
-        u32 tag;
-
-        if (hba->iopintf_v2) {
-                tag = _tag & ~ IOPMU_QUEUE_REQUEST_RESULT_BIT;
-                req = hba->reqs[tag].req_virt;
-                if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
-                        req->header.result = IOP_RESULT_SUCCESS;
-        } else {
-                tag = _tag;
-                req = hba->reqs[tag].req_virt;
-        }
 
-        dprintk("hptiop_host_request_callback: req=%p, type=%d, "
+        dprintk("hptiop_finish_scsi_req: req=%p, type=%d, "
                         "result=%d, context=0x%x tag=%d\n",
                         req, req->header.type, req->header.result,
                         req->header.context, tag);
@@ -354,6 +550,8 @@ static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
 
         switch (le32_to_cpu(req->header.result)) {
         case IOP_RESULT_SUCCESS:
+                scsi_set_resid(scp,
+                        scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
                 scp->result = (DID_OK<<16);
                 break;
         case IOP_RESULT_BAD_TARGET:
@@ -371,12 +569,12 @@ static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
         case IOP_RESULT_INVALID_REQUEST:
                 scp->result = (DID_ABORT<<16);
                 break;
-        case IOP_RESULT_MODE_SENSE_CHECK_CONDITION:
+        case IOP_RESULT_CHECK_CONDITION:
+                scsi_set_resid(scp,
+                        scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
                 scp->result = SAM_STAT_CHECK_CONDITION;
-                memset(&scp->sense_buffer,
-                                0, sizeof(scp->sense_buffer));
                 memcpy(&scp->sense_buffer, &req->sg_list,
-                                min(sizeof(scp->sense_buffer),
+                                min_t(size_t, SCSI_SENSE_BUFFERSIZE,
                                         le32_to_cpu(req->dataxfer_length)));
                 break;
 
@@ -391,15 +589,33 @@ static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
         free_req(hba, &hba->reqs[tag]);
 }
 
-void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
+static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 _tag)
+{
+        struct hpt_iop_request_scsi_command *req;
+        u32 tag;
+
+        if (hba->iopintf_v2) {
+                tag = _tag & ~IOPMU_QUEUE_REQUEST_RESULT_BIT;
+                req = hba->reqs[tag].req_virt;
+                if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
+                        req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
+        } else {
+                tag = _tag;
+                req = hba->reqs[tag].req_virt;
+        }
+
+        hptiop_finish_scsi_req(hba, tag, req);
+}
+
+void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag)
 {
         struct hpt_iop_request_header __iomem *req;
         struct hpt_iop_request_ioctl_command __iomem *p;
         struct hpt_ioctl_k *arg;
 
         req = (struct hpt_iop_request_header __iomem *)
-                        ((unsigned long)hba->iop + tag);
-        dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
+                        ((unsigned long)hba->u.itl.iop + tag);
+        dprintk("hptiop_iop_request_callback_itl: req=%p, type=%d, "
                         "result=%d, context=0x%x tag=%d\n",
                         req, readl(&req->type), readl(&req->result),
                         readl(&req->context), tag);
@@ -427,7 +643,7 @@ void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
                 arg->result = HPT_IOCTL_RESULT_FAILED;
 
         arg->done(arg);
-        writel(tag, &hba->iop->outbound_queue);
+        writel(tag, &hba->u.itl.iop->outbound_queue);
 }
 
 static irqreturn_t hptiop_intr(int irq, void *dev_id)
@@ -437,7 +653,7 @@ static irqreturn_t hptiop_intr(int irq, void *dev_id)
         unsigned long flags;
 
         spin_lock_irqsave(hba->host->host_lock, flags);
-        handled = __iop_intr(hba);
+        handled = hba->ops->iop_intr(hba);
         spin_unlock_irqrestore(hba->host->host_lock, flags);
 
         return handled;
@@ -469,6 +685,57 @@ static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
         return HPT_SCP(scp)->sgcnt;
 }
 
+static void hptiop_post_req_itl(struct hptiop_hba *hba,
+                                        struct hptiop_request *_req)
+{
+        struct hpt_iop_request_header *reqhdr = _req->req_virt;
+
+        reqhdr->context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
+                                                        (u32)_req->index);
+        reqhdr->context_hi32 = 0;
+
+        if (hba->iopintf_v2) {
+                u32 size, size_bits;
+
+                size = le32_to_cpu(reqhdr->size);
+                if (size < 256)
+                        size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
+                else if (size < 512)
+                        size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
+                else
+                        size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
+                                                IOPMU_QUEUE_ADDR_HOST_BIT;
+                writel(_req->req_shifted_phy | size_bits,
+                        &hba->u.itl.iop->inbound_queue);
+        } else
+                writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
+                                        &hba->u.itl.iop->inbound_queue);
+}
+
+static void hptiop_post_req_mv(struct hptiop_hba *hba,
+                                        struct hptiop_request *_req)
+{
+        struct hpt_iop_request_header *reqhdr = _req->req_virt;
+        u32 size, size_bit;
+
+        reqhdr->context = cpu_to_le32(_req->index<<8 |
+                                        IOP_REQUEST_TYPE_SCSI_COMMAND<<5);
+        reqhdr->context_hi32 = 0;
+        size = le32_to_cpu(reqhdr->size);
+
+        if (size <= 256)
+                size_bit = 0;
+        else if (size <= 256*2)
+                size_bit = 1;
+        else if (size <= 256*3)
+                size_bit = 2;
+        else
+                size_bit = 3;
+
+        mv_inbound_write((_req->req_shifted_phy << 5) |
+                MVIOP_MU_QUEUE_ADDR_HOST_BIT | size_bit, hba);
+}
+
 static int hptiop_queuecommand(struct scsi_cmnd *scp,
                                 void (*done)(struct scsi_cmnd *))
 {
@@ -518,9 +785,6 @@ static int hptiop_queuecommand(struct scsi_cmnd *scp,
         req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
         req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
         req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
-        req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
-                                                        (u32)_req->index);
-        req->header.context_hi32 = 0;
         req->dataxfer_length = cpu_to_le32(scsi_bufflen(scp));
         req->channel = scp->device->channel;
         req->target = scp->device->id;
@@ -531,21 +795,7 @@ static int hptiop_queuecommand(struct scsi_cmnd *scp,
                                  + sg_count * sizeof(struct hpt_iopsg));
 
         memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
-
-        if (hba->iopintf_v2) {
-                u32 size_bits;
-                if (req->header.size < 256)
-                        size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
-                else if (req->header.size < 512)
-                        size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
-                else
-                        size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
-                                                IOPMU_QUEUE_ADDR_HOST_BIT;
-                writel(_req->req_shifted_phy | size_bits, &hba->iop->inbound_queue);
-        } else
-                writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
-                                        &hba->iop->inbound_queue);
-
+        hba->ops->post_req(hba, _req);
         return 0;
 
 cmd_done:
@@ -563,9 +813,7 @@ static int hptiop_reset_hba(struct hptiop_hba *hba)
 {
         if (atomic_xchg(&hba->resetting, 1) == 0) {
                 atomic_inc(&hba->reset_count);
-                writel(IOPMU_INBOUND_MSG0_RESET,
-                                &hba->iop->inbound_msgaddr0);
-                hptiop_pci_posting_flush(hba->iop);
+                hba->ops->post_msg(hba, IOPMU_INBOUND_MSG0_RESET);
         }
 
         wait_event_timeout(hba->reset_wq,
@@ -601,8 +849,10 @@ static int hptiop_reset(struct scsi_cmnd *scp)
 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
                                                 int queue_depth)
 {
-        if(queue_depth > 256)
-                queue_depth = 256;
+        struct hptiop_hba *hba = (struct hptiop_hba *)sdev->host->hostdata;
+
+        if (queue_depth > hba->max_requests)
+                queue_depth = hba->max_requests;
         scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
         return queue_depth;
 }
@@ -663,6 +913,26 @@ static struct scsi_host_template driver_template = {
         .change_queue_depth         = hptiop_adjust_disk_queue_depth,
 };
 
+static int hptiop_internal_memalloc_mv(struct hptiop_hba *hba)
+{
+        hba->u.mv.internal_req = dma_alloc_coherent(&hba->pcidev->dev,
+                        0x800, &hba->u.mv.internal_req_phy, GFP_KERNEL);
+        if (hba->u.mv.internal_req)
+                return 0;
+        else
+                return -1;
+}
+
+static int hptiop_internal_memfree_mv(struct hptiop_hba *hba)
+{
+        if (hba->u.mv.internal_req) {
+                dma_free_coherent(&hba->pcidev->dev, 0x800,
+                        hba->u.mv.internal_req, hba->u.mv.internal_req_phy);
+                return 0;
+        } else
+                return -1;
+}
+
 static int __devinit hptiop_probe(struct pci_dev *pcidev,
                                         const struct pci_device_id *id)
 {
@@ -708,6 +978,7 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
 
         hba = (struct hptiop_hba *)host->hostdata;
 
+        hba->ops = (struct hptiop_adapter_ops *)id->driver_data;
         hba->pcidev = pcidev;
         hba->host = host;
         hba->initialized = 0;
@@ -725,16 +996,24 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
         host->n_io_port = 0;
         host->irq = pcidev->irq;
 
-        if (hptiop_map_pci_bar(hba))
+        if (hba->ops->map_pci_bar(hba))
                 goto free_scsi_host;
 
-        if (iop_wait_ready(hba->iop, 20000)) {
+        if (hba->ops->iop_wait_ready(hba, 20000)) {
                 printk(KERN_ERR "scsi%d: firmware not ready\n",
                                 hba->host->host_no);
                 goto unmap_pci_bar;
         }
 
-        if (iop_get_config(hba, &iop_config)) {
+        if (hba->ops->internal_memalloc) {
+                if (hba->ops->internal_memalloc(hba)) {
+                        printk(KERN_ERR "scsi%d: internal_memalloc failed\n",
+                                hba->host->host_no);
+                        goto unmap_pci_bar;
+                }
+        }
+
+        if (hba->ops->get_config(hba, &iop_config)) {
                 printk(KERN_ERR "scsi%d: get config failed\n",
                                 hba->host->host_no);
                 goto unmap_pci_bar;
@@ -770,7 +1049,7 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
         set_config.vbus_id = cpu_to_le16(host->host_no);
         set_config.max_host_request_size = cpu_to_le16(req_size);
 
-        if (iop_set_config(hba, &set_config)) {
+        if (hba->ops->set_config(hba, &set_config)) {
                 printk(KERN_ERR "scsi%d: set config failed\n",
                                 hba->host->host_no);
                 goto unmap_pci_bar;
@@ -839,21 +1118,24 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
 
 free_request_mem:
         dma_free_coherent(&hba->pcidev->dev,
-                        hba->req_size*hba->max_requests + 0x20,
+                        hba->req_size * hba->max_requests + 0x20,
                         hba->dma_coherent, hba->dma_coherent_handle);
 
 free_request_irq:
         free_irq(hba->pcidev->irq, hba);
 
 unmap_pci_bar:
-        iounmap(hba->iop);
+        if (hba->ops->internal_memfree)
+                hba->ops->internal_memfree(hba);
 
-free_pci_regions:
-        pci_release_regions(pcidev) ;
+        hba->ops->unmap_pci_bar(hba);
 
 free_scsi_host:
         scsi_host_put(host);
 
+free_pci_regions:
+        pci_release_regions(pcidev);
+
 disable_pci_device:
         pci_disable_device(pcidev);
 
@@ -865,8 +1147,6 @@ static void hptiop_shutdown(struct pci_dev *pcidev)
 {
         struct Scsi_Host *host = pci_get_drvdata(pcidev);
         struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
-        struct hpt_iopmu __iomem *iop = hba->iop;
-        u32    int_mask;
 
         dprintk("hptiop_shutdown(%p)\n", hba);
 
@@ -876,11 +1156,24 @@ static void hptiop_shutdown(struct pci_dev *pcidev)
                                         hba->host->host_no);
 
         /* disable all outbound interrupts */
-        int_mask = readl(&iop->outbound_intmask);
+        hba->ops->disable_intr(hba);
+}
+
+static void hptiop_disable_intr_itl(struct hptiop_hba *hba)
+{
+        u32 int_mask;
+
+        int_mask = readl(&hba->u.itl.iop->outbound_intmask);
         writel(int_mask |
                 IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
-                &iop->outbound_intmask);
-        hptiop_pci_posting_flush(iop);
+                &hba->u.itl.iop->outbound_intmask);
+        readl(&hba->u.itl.iop->outbound_intmask);
+}
+
+static void hptiop_disable_intr_mv(struct hptiop_hba *hba)
+{
+        writel(0, &hba->u.mv.regs->outbound_intmask);
+        readl(&hba->u.mv.regs->outbound_intmask);
 }
 
 static void hptiop_remove(struct pci_dev *pcidev)
@@ -901,7 +1194,10 @@ static void hptiop_remove(struct pci_dev *pcidev)
                         hba->dma_coherent,
                         hba->dma_coherent_handle);
 
-        iounmap(hba->iop);
+        if (hba->ops->internal_memfree)
+                hba->ops->internal_memfree(hba);
+
+        hba->ops->unmap_pci_bar(hba);
 
         pci_release_regions(hba->pcidev);
         pci_set_drvdata(hba->pcidev, NULL);
@@ -910,11 +1206,50 @@ static void hptiop_remove(struct pci_dev *pcidev)
         scsi_host_put(host);
 }
 
+static struct hptiop_adapter_ops hptiop_itl_ops = {
+        .iop_wait_ready    = iop_wait_ready_itl,
+        .internal_memalloc = 0,
+        .internal_memfree  = 0,
+        .map_pci_bar       = hptiop_map_pci_bar_itl,
+        .unmap_pci_bar     = hptiop_unmap_pci_bar_itl,
+        .enable_intr       = hptiop_enable_intr_itl,
+        .disable_intr      = hptiop_disable_intr_itl,
+        .get_config        = iop_get_config_itl,
+        .set_config        = iop_set_config_itl,
+        .iop_intr          = iop_intr_itl,
+        .post_msg          = hptiop_post_msg_itl,
+        .post_req          = hptiop_post_req_itl,
+};
+
+static struct hptiop_adapter_ops hptiop_mv_ops = {
+        .iop_wait_ready    = iop_wait_ready_mv,
+        .internal_memalloc = hptiop_internal_memalloc_mv,
+        .internal_memfree  = hptiop_internal_memfree_mv,
+        .map_pci_bar       = hptiop_map_pci_bar_mv,
+        .unmap_pci_bar     = hptiop_unmap_pci_bar_mv,
+        .enable_intr       = hptiop_enable_intr_mv,
+        .disable_intr      = hptiop_disable_intr_mv,
+        .get_config        = iop_get_config_mv,
+        .set_config        = iop_set_config_mv,
+        .iop_intr          = iop_intr_mv,
+        .post_msg          = hptiop_post_msg_mv,
+        .post_req          = hptiop_post_req_mv,
+};
+
 static struct pci_device_id hptiop_id_table[] = {
-        { PCI_VDEVICE(TTI, 0x3220) },
-        { PCI_VDEVICE(TTI, 0x3320) },
-        { PCI_VDEVICE(TTI, 0x3520) },
-        { PCI_VDEVICE(TTI, 0x4320) },
+        { PCI_VDEVICE(TTI, 0x3220), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3320), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3520), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x4320), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3510), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3511), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3521), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3522), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3410), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3540), (kernel_ulong_t)&hptiop_itl_ops },
+        { PCI_VDEVICE(TTI, 0x3120), (kernel_ulong_t)&hptiop_mv_ops },
+        { PCI_VDEVICE(TTI, 0x3122), (kernel_ulong_t)&hptiop_mv_ops },
+        { PCI_VDEVICE(TTI, 0x3020), (kernel_ulong_t)&hptiop_mv_ops },
         {},
 };
 
diff --git a/drivers/scsi/hptiop.h b/drivers/scsi/hptiop.h
index 2a5e46e001cb..a0289f219752 100644
--- a/drivers/scsi/hptiop.h
+++ b/drivers/scsi/hptiop.h
@@ -1,5 +1,5 @@
 /*
- * HighPoint RR3xxx controller driver for Linux
+ * HighPoint RR3xxx/4xxx controller driver for Linux
  * Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -18,8 +18,7 @@
 #ifndef _HPTIOP_H_
 #define _HPTIOP_H_
 
-struct hpt_iopmu
-{
+struct hpt_iopmu_itl {
         __le32 resrved0[4];
         __le32 inbound_msgaddr0;
         __le32 inbound_msgaddr1;
@@ -54,6 +53,40 @@ struct hpt_iopmu
 #define IOPMU_INBOUND_INT_ERROR      8
 #define IOPMU_INBOUND_INT_POSTQUEUE  0x10
 
+#define MVIOP_QUEUE_LEN  512
+
+struct hpt_iopmu_mv {
+        __le32 inbound_head;
+        __le32 inbound_tail;
+        __le32 outbound_head;
+        __le32 outbound_tail;
+        __le32 inbound_msg;
+        __le32 outbound_msg;
+        __le32 reserve[10];
+        __le64 inbound_q[MVIOP_QUEUE_LEN];
+        __le64 outbound_q[MVIOP_QUEUE_LEN];
+};
+
+struct hpt_iopmv_regs {
+        __le32 reserved[0x20400 / 4];
+        __le32 inbound_doorbell;
+        __le32 inbound_intmask;
+        __le32 outbound_doorbell;
+        __le32 outbound_intmask;
+};
+
+#define MVIOP_MU_QUEUE_ADDR_HOST_MASK   (~(0x1full))
+#define MVIOP_MU_QUEUE_ADDR_HOST_BIT    4
+
+#define MVIOP_MU_QUEUE_ADDR_IOP_HIGH32  0xffffffff
+#define MVIOP_MU_QUEUE_REQUEST_RESULT_BIT   1
+#define MVIOP_MU_QUEUE_REQUEST_RETURN_CONTEXT 2
+
+#define MVIOP_MU_INBOUND_INT_MSG        1
+#define MVIOP_MU_INBOUND_INT_POSTQUEUE  2
+#define MVIOP_MU_OUTBOUND_INT_MSG       1
+#define MVIOP_MU_OUTBOUND_INT_POSTQUEUE 2
+
 enum hpt_iopmu_message {
         /* host-to-iop messages */
         IOPMU_INBOUND_MSG0_NOP = 0,
@@ -72,8 +105,7 @@ enum hpt_iopmu_message {
         IOPMU_OUTBOUND_MSG0_REVALIDATE_DEVICE_MAX = 0x3ff,
 };
 
-struct hpt_iop_request_header
-{
+struct hpt_iop_request_header {
         __le32 size;
         __le32 type;
         __le32 flags;
@@ -104,11 +136,10 @@ enum hpt_iop_result_type {
         IOP_RESULT_RESET,
         IOP_RESULT_INVALID_REQUEST,
         IOP_RESULT_BAD_TARGET,
-        IOP_RESULT_MODE_SENSE_CHECK_CONDITION,
+        IOP_RESULT_CHECK_CONDITION,
 };
 
-struct hpt_iop_request_get_config
-{
+struct hpt_iop_request_get_config {
         struct hpt_iop_request_header header;
         __le32 interface_version;
         __le32 firmware_version;
@@ -121,8 +152,7 @@ struct hpt_iop_request_get_config
         __le32 sdram_size;
 };
 
-struct hpt_iop_request_set_config
-{
+struct hpt_iop_request_set_config {
         struct hpt_iop_request_header header;
         __le32 iop_id;
         __le16 vbus_id;
@@ -130,15 +160,13 @@ struct hpt_iop_request_set_config
         __le32 reserve[6];
 };
 
-struct hpt_iopsg
-{
+struct hpt_iopsg {
         __le32 size;
         __le32 eot; /* non-zero: end of table */
         __le64 pci_address;
 };
 
-struct hpt_iop_request_block_command
-{
+struct hpt_iop_request_block_command {
         struct hpt_iop_request_header header;
         u8     channel;
         u8     target;
@@ -156,8 +184,7 @@ struct hpt_iop_request_block_command
 #define IOP_BLOCK_COMMAND_FLUSH    4
 #define IOP_BLOCK_COMMAND_SHUTDOWN 5
 
-struct hpt_iop_request_scsi_command
-{
+struct hpt_iop_request_scsi_command {
         struct hpt_iop_request_header header;
         u8     channel;
         u8     target;
@@ -168,8 +195,7 @@ struct hpt_iop_request_scsi_command
         struct hpt_iopsg sg_list[1];
 };
 
-struct hpt_iop_request_ioctl_command
-{
+struct hpt_iop_request_ioctl_command {
         struct hpt_iop_request_header header;
         __le32 ioctl_code;
         __le32 inbuf_size;
@@ -182,11 +208,11 @@ struct hpt_iop_request_ioctl_command
 #define HPTIOP_MAX_REQUESTS  256u
 
 struct hptiop_request {
-        struct hptiop_request * next;
-        void *                  req_virt;
-        u32                     req_shifted_phy;
-        struct scsi_cmnd *      scp;
-        int                     index;
+        struct hptiop_request *next;
+        void                  *req_virt;
+        u32                   req_shifted_phy;
+        struct scsi_cmnd      *scp;
+        int                   index;
 };
 
 struct hpt_scsi_pointer {
@@ -198,9 +224,21 @@ struct hpt_scsi_pointer {
 #define HPT_SCP(scp) ((struct hpt_scsi_pointer *)&(scp)->SCp)
 
 struct hptiop_hba {
-        struct hpt_iopmu __iomem * iop;
-        struct Scsi_Host * host;
-        struct pci_dev * pcidev;
+        struct hptiop_adapter_ops *ops;
+        union {
+                struct {
+                        struct hpt_iopmu_itl __iomem *iop;
+                } itl;
+                struct {
+                        struct hpt_iopmv_regs *regs;
+                        struct hpt_iopmu_mv __iomem *mu;
+                        void *internal_req;
+                        dma_addr_t internal_req_phy;
+                } mv;
+        } u;
+
+        struct Scsi_Host *host;
+        struct pci_dev *pcidev;
 
         /* IOP config info */
         u32     interface_version;
@@ -213,15 +251,15 @@ struct hptiop_hba {
 
         u32     req_size; /* host-allocated request buffer size */
 
-        int     iopintf_v2: 1;
-        int     initialized: 1;
-        int     msg_done: 1;
+        u32     iopintf_v2: 1;
+        u32     initialized: 1;
+        u32     msg_done: 1;
 
         struct hptiop_request * req_list;
         struct hptiop_request reqs[HPTIOP_MAX_REQUESTS];
 
         /* used to free allocated dma area */
-        void *      dma_coherent;
+        void        *dma_coherent;
         dma_addr_t  dma_coherent_handle;
 
         atomic_t    reset_count;
@@ -231,19 +269,35 @@ struct hptiop_hba {
         wait_queue_head_t ioctl_wq;
 };
 
-struct hpt_ioctl_k
-{
+struct hpt_ioctl_k {
         struct hptiop_hba * hba;
         u32    ioctl_code;
         u32    inbuf_size;
         u32    outbuf_size;
-        void * inbuf;
-        void * outbuf;
-        u32  * bytes_returned;
+        void   *inbuf;
+        void   *outbuf;
+        u32    *bytes_returned;
         void (*done)(struct hpt_ioctl_k *);
         int    result; /* HPT_IOCTL_RESULT_ */
 };
 
+struct hptiop_adapter_ops {
+        int  (*iop_wait_ready)(struct hptiop_hba *hba, u32 millisec);
+        int  (*internal_memalloc)(struct hptiop_hba *hba);
+        int  (*internal_memfree)(struct hptiop_hba *hba);
+        int  (*map_pci_bar)(struct hptiop_hba *hba);
+        void (*unmap_pci_bar)(struct hptiop_hba *hba);
+        void (*enable_intr)(struct hptiop_hba *hba);
+        void (*disable_intr)(struct hptiop_hba *hba);
+        int  (*get_config)(struct hptiop_hba *hba,
+                                struct hpt_iop_request_get_config *config);
+        int  (*set_config)(struct hptiop_hba *hba,
+                                struct hpt_iop_request_set_config *config);
+        int  (*iop_intr)(struct hptiop_hba *hba);
+        void (*post_msg)(struct hptiop_hba *hba, u32 msg);
+        void (*post_req)(struct hptiop_hba *hba, struct hptiop_request *_req);
+};
+
 #define HPT_IOCTL_RESULT_OK         0
 #define HPT_IOCTL_RESULT_FAILED     (-1)
 
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index 5f2396c03958..30819012898f 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -629,6 +629,16 @@ static int ibmvscsi_send_srp_event(struct srp_event_struct *evt_struct,
                 list_del(&evt_struct->list);
                 del_timer(&evt_struct->timer);
 
+                /* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY.
+                 * Firmware will send a CRQ with a transport event (0xFF) to
+                 * tell this client what has happened to the transport.  This
+                 * will be handled in ibmvscsi_handle_crq()
+                 */
+                if (rc == H_CLOSED) {
+                        dev_warn(hostdata->dev, "send warning. "
+                                 "Receive queue closed, will retry.\n");
+                        goto send_busy;
+                }
                 dev_err(hostdata->dev, "send error %d\n", rc);
                 atomic_inc(&hostdata->request_limit);
                 goto send_error;
@@ -976,58 +986,74 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
         int rsp_rc;
         unsigned long flags;
         u16 lun = lun_from_dev(cmd->device);
+        unsigned long wait_switch = 0;
 
         /* First, find this command in our sent list so we can figure
          * out the correct tag
          */
         spin_lock_irqsave(hostdata->host->host_lock, flags);
-        found_evt = NULL;
-        list_for_each_entry(tmp_evt, &hostdata->sent, list) {
-                if (tmp_evt->cmnd == cmd) {
-                        found_evt = tmp_evt;
-                        break;
+        wait_switch = jiffies + (init_timeout * HZ);
+        do {
+                found_evt = NULL;
+                list_for_each_entry(tmp_evt, &hostdata->sent, list) {
+                        if (tmp_evt->cmnd == cmd) {
+                                found_evt = tmp_evt;
+                                break;
+                        }
                 }
-        }
 
-        if (!found_evt) {
-                spin_unlock_irqrestore(hostdata->host->host_lock, flags);
-                return SUCCESS;
-        }
+                if (!found_evt) {
+                        spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+                        return SUCCESS;
+                }
 
-        evt = get_event_struct(&hostdata->pool);
-        if (evt == NULL) {
-                spin_unlock_irqrestore(hostdata->host->host_lock, flags);
-                sdev_printk(KERN_ERR, cmd->device, "failed to allocate abort event\n");
-                return FAILED;
-        }
+                evt = get_event_struct(&hostdata->pool);
+                if (evt == NULL) {
+                        spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+                        sdev_printk(KERN_ERR, cmd->device,
+                                "failed to allocate abort event\n");
+                        return FAILED;
+                }
         
-        init_event_struct(evt,
-                          sync_completion,
-                          VIOSRP_SRP_FORMAT,
-                          init_timeout);
+                init_event_struct(evt,
+                                  sync_completion,
+                                  VIOSRP_SRP_FORMAT,
+                                  init_timeout);
 
-        tsk_mgmt = &evt->iu.srp.tsk_mgmt;
+                tsk_mgmt = &evt->iu.srp.tsk_mgmt;
         
-        /* Set up an abort SRP command */
-        memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
-        tsk_mgmt->opcode = SRP_TSK_MGMT;
-        tsk_mgmt->lun = ((u64) lun) << 48;
-        tsk_mgmt->tsk_mgmt_func = SRP_TSK_ABORT_TASK;
-        tsk_mgmt->task_tag = (u64) found_evt;
-
-        sdev_printk(KERN_INFO, cmd->device, "aborting command. lun 0x%lx, tag 0x%lx\n",
-                    tsk_mgmt->lun, tsk_mgmt->task_tag);
-
-        evt->sync_srp = &srp_rsp;
-        init_completion(&evt->comp);
-        rsp_rc = ibmvscsi_send_srp_event(evt, hostdata, init_timeout * 2);
+                /* Set up an abort SRP command */
+                memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
+                tsk_mgmt->opcode = SRP_TSK_MGMT;
+                tsk_mgmt->lun = ((u64) lun) << 48;
+                tsk_mgmt->tsk_mgmt_func = SRP_TSK_ABORT_TASK;
+                tsk_mgmt->task_tag = (u64) found_evt;
+
+                evt->sync_srp = &srp_rsp;
+
+                init_completion(&evt->comp);
+                rsp_rc = ibmvscsi_send_srp_event(evt, hostdata, init_timeout * 2);
+
+                if (rsp_rc != SCSI_MLQUEUE_HOST_BUSY)
+                        break;
+
+                spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+                msleep(10);
+                spin_lock_irqsave(hostdata->host->host_lock, flags);
+        } while (time_before(jiffies, wait_switch));
+
         spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+
         if (rsp_rc != 0) {
                 sdev_printk(KERN_ERR, cmd->device,
                             "failed to send abort() event. rc=%d\n", rsp_rc);
                 return FAILED;
         }
 
+        sdev_printk(KERN_INFO, cmd->device,
+                    "aborting command. lun 0x%lx, tag 0x%lx\n",
+                    (((u64) lun) << 48), (u64) found_evt);
+
         wait_for_completion(&evt->comp);
 
         /* make sure we got a good response */
@@ -1099,41 +1125,56 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
         int rsp_rc;
         unsigned long flags;
         u16 lun = lun_from_dev(cmd->device);
+        unsigned long wait_switch = 0;
 
         spin_lock_irqsave(hostdata->host->host_lock, flags);
-        evt = get_event_struct(&hostdata->pool);
-        if (evt == NULL) {
-                spin_unlock_irqrestore(hostdata->host->host_lock, flags);
-                sdev_printk(KERN_ERR, cmd->device, "failed to allocate reset event\n");
-                return FAILED;
-        }
+        wait_switch = jiffies + (init_timeout * HZ);
+        do {
+                evt = get_event_struct(&hostdata->pool);
+                if (evt == NULL) {
+                        spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+                        sdev_printk(KERN_ERR, cmd->device,
+                                "failed to allocate reset event\n");
+                        return FAILED;
+                }
         
-        init_event_struct(evt,
-                          sync_completion,
-                          VIOSRP_SRP_FORMAT,
-                          init_timeout);
+                init_event_struct(evt,
+                                  sync_completion,
+                                  VIOSRP_SRP_FORMAT,
+                                  init_timeout);
 
-        tsk_mgmt = &evt->iu.srp.tsk_mgmt;
+                tsk_mgmt = &evt->iu.srp.tsk_mgmt;
 
-        /* Set up a lun reset SRP command */
-        memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
-        tsk_mgmt->opcode = SRP_TSK_MGMT;
-        tsk_mgmt->lun = ((u64) lun) << 48;
-        tsk_mgmt->tsk_mgmt_func = SRP_TSK_LUN_RESET;
+                /* Set up a lun reset SRP command */
+                memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
+                tsk_mgmt->opcode = SRP_TSK_MGMT;
+                tsk_mgmt->lun = ((u64) lun) << 48;
+                tsk_mgmt->tsk_mgmt_func = SRP_TSK_LUN_RESET;
 
-        sdev_printk(KERN_INFO, cmd->device, "resetting device. lun 0x%lx\n",
-                    tsk_mgmt->lun);
+                evt->sync_srp = &srp_rsp;
+
+                init_completion(&evt->comp);
+                rsp_rc = ibmvscsi_send_srp_event(evt, hostdata, init_timeout * 2);
+
+                if (rsp_rc != SCSI_MLQUEUE_HOST_BUSY)
+                        break;
+
+                spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+                msleep(10);
+                spin_lock_irqsave(hostdata->host->host_lock, flags);
+        } while (time_before(jiffies, wait_switch));
 
-        evt->sync_srp = &srp_rsp;
-        init_completion(&evt->comp);
-        rsp_rc = ibmvscsi_send_srp_event(evt, hostdata, init_timeout * 2);
         spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+
         if (rsp_rc != 0) {
                 sdev_printk(KERN_ERR, cmd->device,
                             "failed to send reset event. rc=%d\n", rsp_rc);
                 return FAILED;
         }
 
+        sdev_printk(KERN_INFO, cmd->device, "resetting device. lun 0x%lx\n",
+                    (((u64) lun) << 48));
+
         wait_for_completion(&evt->comp);
 
         /* make sure we got a good response */
@@ -1386,8 +1427,10 @@ static int ibmvscsi_slave_configure(struct scsi_device *sdev)
         unsigned long lock_flags = 0;
 
         spin_lock_irqsave(shost->host_lock, lock_flags);
-        if (sdev->type == TYPE_DISK)
+        if (sdev->type == TYPE_DISK) {
                 sdev->allow_restart = 1;
+                sdev->timeout = 60 * HZ;
+        }
         scsi_adjust_queue_depth(sdev, 0, shost->cmd_per_lun);
         spin_unlock_irqrestore(shost->host_lock, lock_flags);
         return 0;
diff --git a/drivers/scsi/ibmvscsi/ibmvstgt.c b/drivers/scsi/ibmvscsi/ibmvstgt.c
index 82bcab688b44..d63f11e95abf 100644
--- a/drivers/scsi/ibmvscsi/ibmvstgt.c
+++ b/drivers/scsi/ibmvscsi/ibmvstgt.c
@@ -292,7 +292,7 @@ static int ibmvstgt_cmd_done(struct scsi_cmnd *sc,
         dprintk("%p %p %x %u\n", iue, target, vio_iu(iue)->srp.cmd.cdb[0],
                 cmd->usg_sg);
 
-        if (sc->use_sg)
+        if (scsi_sg_count(sc))
                 err = srp_transfer_data(sc, &vio_iu(iue)->srp.cmd, ibmvstgt_rdma, 1, 1);
 
         spin_lock_irqsave(&target->lock, flags);
diff --git a/drivers/scsi/imm.c b/drivers/scsi/imm.c
index a3d0c6b14958..f97d172844be 100644
--- a/drivers/scsi/imm.c
+++ b/drivers/scsi/imm.c
@@ -837,19 +837,16 @@ static int imm_engine(imm_struct *dev, struct scsi_cmnd *cmd)
 
                 /* Phase 4 - Setup scatter/gather buffers */
         case 4:
-                if (cmd->use_sg) {
-                        /* if many buffers are available, start filling the first */
-                        cmd->SCp.buffer =
-                            (struct scatterlist *) cmd->request_buffer;
+                if (scsi_bufflen(cmd)) {
+                        cmd->SCp.buffer = scsi_sglist(cmd);
                         cmd->SCp.this_residual = cmd->SCp.buffer->length;
                         cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
                 } else {
-                        /* else fill the only available buffer */
                         cmd->SCp.buffer = NULL;
-                        cmd->SCp.this_residual = cmd->request_bufflen;
-                        cmd->SCp.ptr = cmd->request_buffer;
+                        cmd->SCp.this_residual = 0;
+                        cmd->SCp.ptr = NULL;
                 }
-                cmd->SCp.buffers_residual = cmd->use_sg - 1;
+                cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
                 cmd->SCp.phase++;
                 if (cmd->SCp.this_residual & 0x01)
                         cmd->SCp.this_residual++;
diff --git a/drivers/scsi/in2000.c b/drivers/scsi/in2000.c
index c8b452f2878c..8053b1e86ccb 100644
--- a/drivers/scsi/in2000.c
+++ b/drivers/scsi/in2000.c
@@ -369,16 +369,16 @@ static int in2000_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
  *  - SCp.phase records this command's SRCID_ER bit setting
  */
 
-        if (cmd->use_sg) {
-                cmd->SCp.buffer = (struct scatterlist *) cmd->request_buffer;
-                cmd->SCp.buffers_residual = cmd->use_sg - 1;
+        if (scsi_bufflen(cmd)) {
+                cmd->SCp.buffer = scsi_sglist(cmd);
+                cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
                 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
                 cmd->SCp.this_residual = cmd->SCp.buffer->length;
         } else {
                 cmd->SCp.buffer = NULL;
                 cmd->SCp.buffers_residual = 0;
-                cmd->SCp.ptr = (char *) cmd->request_buffer;
-                cmd->SCp.this_residual = cmd->request_bufflen;
+                cmd->SCp.ptr = NULL;
+                cmd->SCp.this_residual = 0;
         }
         cmd->SCp.have_data_in = 0;
 
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index aa0df0a4b22a..73270ff892d9 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -84,7 +84,7 @@
 /*
  *   Global Data
  */
-static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
+static LIST_HEAD(ipr_ioa_head);
 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
 static unsigned int ipr_max_speed = 1;
 static int ipr_testmode = 0;
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index 5c5a9b2628fc..7505cca8e68e 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -389,17 +389,17 @@ static struct  pci_device_id  ips_pci_table[] = {
 MODULE_DEVICE_TABLE( pci, ips_pci_table );
 
 static char ips_hot_plug_name[] = "ips";
-   
+
 static int __devinit  ips_insert_device(struct pci_dev *pci_dev, const struct pci_device_id *ent);
 static void __devexit ips_remove_device(struct pci_dev *pci_dev);
-   
+
 static struct pci_driver ips_pci_driver = {
         .name           = ips_hot_plug_name,
         .id_table       = ips_pci_table,
         .probe          = ips_insert_device,
         .remove         = __devexit_p(ips_remove_device),
 };
-           
+
 
 /*
  * Necessary forward function protoypes
@@ -587,7 +587,7 @@ static void
 ips_setup_funclist(ips_ha_t * ha)
 {
 
-        /*                                
+        /*
          * Setup Functions
          */
         if (IPS_IS_MORPHEUS(ha) || IPS_IS_MARCO(ha)) {
@@ -702,12 +702,8 @@ ips_release(struct Scsi_Host *sh)
         /* free extra memory */
         ips_free(ha);
 
-        /* Free I/O Region */
-        if (ha->io_addr)
-                release_region(ha->io_addr, ha->io_len);
-
         /* free IRQ */
-        free_irq(ha->irq, ha);
+        free_irq(ha->pcidev->irq, ha);
 
         scsi_host_put(sh);
 
@@ -1637,7 +1633,7 @@ ips_make_passthru(ips_ha_t *ha, struct scsi_cmnd *SC, ips_scb_t *scb, int intr)
                                 return (IPS_FAILURE);
                         }
 
-                        if (ha->device_id == IPS_DEVICEID_COPPERHEAD &&
+                        if (ha->pcidev->device == IPS_DEVICEID_COPPERHEAD &&
                             pt->CoppCP.cmd.flashfw.op_code ==
                             IPS_CMD_RW_BIOSFW) {
                                 ret = ips_flash_copperhead(ha, pt, scb);
@@ -2021,7 +2017,7 @@ ips_cleanup_passthru(ips_ha_t * ha, ips_scb_t * scb)
         pt->ExtendedStatus = scb->extended_status;
         pt->AdapterType = ha->ad_type;
 
-        if (ha->device_id == IPS_DEVICEID_COPPERHEAD &&
+        if (ha->pcidev->device == IPS_DEVICEID_COPPERHEAD &&
             (scb->cmd.flashfw.op_code == IPS_CMD_DOWNLOAD ||
              scb->cmd.flashfw.op_code == IPS_CMD_RW_BIOSFW))
                 ips_free_flash_copperhead(ha);
@@ -2075,13 +2071,13 @@ ips_host_info(ips_ha_t * ha, char *ptr, off_t offset, int len)
                           ha->mem_ptr);
         }
 
-        copy_info(&info, "\tIRQ number                        : %d\n", ha->irq);
+        copy_info(&info, "\tIRQ number                        : %d\n", ha->pcidev->irq);
 
     /* For the Next 3 lines Check for Binary 0 at the end and don't include it if it's there. */
     /* That keeps everything happy for "text" operations on the proc file.                    */
 
         if (le32_to_cpu(ha->nvram->signature) == IPS_NVRAM_P5_SIG) {
-        if (ha->nvram->bios_low[3] == 0) { 
+        if (ha->nvram->bios_low[3] == 0) {
             copy_info(&info,
                                   "\tBIOS Version                      : %c%c%c%c%c%c%c\n",
                                   ha->nvram->bios_high[0], ha->nvram->bios_high[1],
@@ -2232,31 +2228,31 @@ ips_identify_controller(ips_ha_t * ha)
 {
         METHOD_TRACE("ips_identify_controller", 1);
 
-        switch (ha->device_id) {
+        switch (ha->pcidev->device) {
         case IPS_DEVICEID_COPPERHEAD:
-                if (ha->revision_id <= IPS_REVID_SERVERAID) {
+                if (ha->pcidev->revision <= IPS_REVID_SERVERAID) {
                         ha->ad_type = IPS_ADTYPE_SERVERAID;
-                } else if (ha->revision_id == IPS_REVID_SERVERAID2) {
+                } else if (ha->pcidev->revision == IPS_REVID_SERVERAID2) {
                         ha->ad_type = IPS_ADTYPE_SERVERAID2;
-                } else if (ha->revision_id == IPS_REVID_NAVAJO) {
+                } else if (ha->pcidev->revision == IPS_REVID_NAVAJO) {
                         ha->ad_type = IPS_ADTYPE_NAVAJO;
-                } else if ((ha->revision_id == IPS_REVID_SERVERAID2)
+                } else if ((ha->pcidev->revision == IPS_REVID_SERVERAID2)
                            && (ha->slot_num == 0)) {
                         ha->ad_type = IPS_ADTYPE_KIOWA;
-                } else if ((ha->revision_id >= IPS_REVID_CLARINETP1) &&
-                           (ha->revision_id <= IPS_REVID_CLARINETP3)) {
+                } else if ((ha->pcidev->revision >= IPS_REVID_CLARINETP1) &&
+                           (ha->pcidev->revision <= IPS_REVID_CLARINETP3)) {
                         if (ha->enq->ucMaxPhysicalDevices == 15)
                                 ha->ad_type = IPS_ADTYPE_SERVERAID3L;
                         else
                                 ha->ad_type = IPS_ADTYPE_SERVERAID3;
-                } else if ((ha->revision_id >= IPS_REVID_TROMBONE32) &&
-                           (ha->revision_id <= IPS_REVID_TROMBONE64)) {
+                } else if ((ha->pcidev->revision >= IPS_REVID_TROMBONE32) &&
+                           (ha->pcidev->revision <= IPS_REVID_TROMBONE64)) {
                         ha->ad_type = IPS_ADTYPE_SERVERAID4H;
                 }
                 break;
 
         case IPS_DEVICEID_MORPHEUS:
-                switch (ha->subdevice_id) {
+                switch (ha->pcidev->subsystem_device) {
                 case IPS_SUBDEVICEID_4L:
                         ha->ad_type = IPS_ADTYPE_SERVERAID4L;
                         break;
@@ -2285,7 +2281,7 @@ ips_identify_controller(ips_ha_t * ha)
                 break;
 
         case IPS_DEVICEID_MARCO:
-                switch (ha->subdevice_id) {
+                switch (ha->pcidev->subsystem_device) {
                 case IPS_SUBDEVICEID_6M:
                         ha->ad_type = IPS_ADTYPE_SERVERAID6M;
                         break;
@@ -2332,20 +2328,20 @@ ips_get_bios_version(ips_ha_t * ha, int intr)
 
         strncpy(ha->bios_version, "       ?", 8);
 
-        if (ha->device_id == IPS_DEVICEID_COPPERHEAD) {
+        if (ha->pcidev->device == IPS_DEVICEID_COPPERHEAD) {
                 if (IPS_USE_MEMIO(ha)) {
                         /* Memory Mapped I/O */
 
                         /* test 1st byte */
                         writel(0, ha->mem_ptr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         if (readb(ha->mem_ptr + IPS_REG_FLDP) != 0x55)
                                 return;
 
                         writel(1, ha->mem_ptr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         if (readb(ha->mem_ptr + IPS_REG_FLDP) != 0xAA)
@@ -2353,20 +2349,20 @@ ips_get_bios_version(ips_ha_t * ha, int intr)
 
                         /* Get Major version */
                         writel(0x1FF, ha->mem_ptr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         major = readb(ha->mem_ptr + IPS_REG_FLDP);
 
                         /* Get Minor version */
                         writel(0x1FE, ha->mem_ptr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
                         minor = readb(ha->mem_ptr + IPS_REG_FLDP);
 
                         /* Get SubMinor version */
                         writel(0x1FD, ha->mem_ptr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
                         subminor = readb(ha->mem_ptr + IPS_REG_FLDP);
 
@@ -2375,14 +2371,14 @@ ips_get_bios_version(ips_ha_t * ha, int intr)
 
                         /* test 1st byte */
                         outl(0, ha->io_addr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         if (inb(ha->io_addr + IPS_REG_FLDP) != 0x55)
                                 return;
 
                         outl(cpu_to_le32(1), ha->io_addr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         if (inb(ha->io_addr + IPS_REG_FLDP) != 0xAA)
@@ -2390,21 +2386,21 @@ ips_get_bios_version(ips_ha_t * ha, int intr)
 
                         /* Get Major version */
                         outl(cpu_to_le32(0x1FF), ha->io_addr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         major = inb(ha->io_addr + IPS_REG_FLDP);
 
                         /* Get Minor version */
                         outl(cpu_to_le32(0x1FE), ha->io_addr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         minor = inb(ha->io_addr + IPS_REG_FLDP);
 
                         /* Get SubMinor version */
                         outl(cpu_to_le32(0x1FD), ha->io_addr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         subminor = inb(ha->io_addr + IPS_REG_FLDP);
@@ -2740,8 +2736,6 @@ ips_next(ips_ha_t * ha, int intr)
                 SC->result = DID_OK;
                 SC->host_scribble = NULL;
 
-                memset(SC->sense_buffer, 0, sizeof (SC->sense_buffer));
-
                 scb->target_id = SC->device->id;
                 scb->lun = SC->device->lun;
                 scb->bus = SC->device->channel;
@@ -2780,10 +2774,11 @@ ips_next(ips_ha_t * ha, int intr)
                 scb->dcdb.cmd_attribute =
                     ips_command_direction[scb->scsi_cmd->cmnd[0]];
 
-        /* Allow a WRITE BUFFER Command to Have no Data */
-        /* This is Used by Tape Flash Utilites          */
-        if ((scb->scsi_cmd->cmnd[0] == WRITE_BUFFER) && (scb->data_len == 0)) 
-            scb->dcdb.cmd_attribute = 0;                  
+                /* Allow a WRITE BUFFER Command to Have no Data */
+                /* This is Used by Tape Flash Utilites          */
+                if ((scb->scsi_cmd->cmnd[0] == WRITE_BUFFER) &&
+                                (scb->data_len == 0))
+                        scb->dcdb.cmd_attribute = 0;
 
                 if (!(scb->dcdb.cmd_attribute & 0x3))
                         scb->dcdb.transfer_length = 0;
@@ -3404,7 +3399,7 @@ ips_map_status(ips_ha_t * ha, ips_scb_t * scb, ips_stat_t * sp)
 
                                 /* Restrict access to physical DASD */
                                 if (scb->scsi_cmd->cmnd[0] == INQUIRY) {
-                                    ips_scmd_buf_read(scb->scsi_cmd, 
+                                    ips_scmd_buf_read(scb->scsi_cmd,
                                       &inquiryData, sizeof (inquiryData));
                                     if ((inquiryData.DeviceType & 0x1f) == TYPE_DISK) {
                                         errcode = DID_TIME_OUT;
@@ -3438,13 +3433,11 @@ ips_map_status(ips_ha_t * ha, ips_scb_t * scb, ips_stat_t * sp)
                                             (IPS_DCDB_TABLE_TAPE *) & scb->dcdb;
                                         memcpy(scb->scsi_cmd->sense_buffer,
                                                tapeDCDB->sense_info,
-                                               sizeof (scb->scsi_cmd->
-                                                       sense_buffer));
+                                               SCSI_SENSE_BUFFERSIZE);
                                 } else {
                                         memcpy(scb->scsi_cmd->sense_buffer,
                                                scb->dcdb.sense_info,
-                                               sizeof (scb->scsi_cmd->
-                                                       sense_buffer));
+                                               SCSI_SENSE_BUFFERSIZE);
                                 }
                                 device_error = 2;       /* check condition */
                         }
@@ -3824,7 +3817,6 @@ ips_send_cmd(ips_ha_t * ha, ips_scb_t * scb)
                         /* attempted, a Check Condition occurred, and Sense   */
                         /* Data indicating an Invalid CDB OpCode is returned. */
                         sp = (char *) scb->scsi_cmd->sense_buffer;
-                        memset(sp, 0, sizeof (scb->scsi_cmd->sense_buffer));
 
                         sp[0] = 0x70;   /* Error Code               */
                         sp[2] = ILLEGAL_REQUEST;        /* Sense Key 5 Illegal Req. */
@@ -4090,10 +4082,10 @@ ips_chkstatus(ips_ha_t * ha, IPS_STATUS * pstatus)
                         scb->scsi_cmd->result = errcode << 16;
                 } else {        /* bus == 0 */
                         /* restrict access to physical drives */
-                        if (scb->scsi_cmd->cmnd[0] == INQUIRY) { 
-                            ips_scmd_buf_read(scb->scsi_cmd, 
+                        if (scb->scsi_cmd->cmnd[0] == INQUIRY) {
+                            ips_scmd_buf_read(scb->scsi_cmd,
                                   &inquiryData, sizeof (inquiryData));
-                            if ((inquiryData.DeviceType & 0x1f) == TYPE_DISK) 
+                            if ((inquiryData.DeviceType & 0x1f) == TYPE_DISK)
                                 scb->scsi_cmd->result = DID_TIME_OUT << 16;
                         }
                 }               /* else */
@@ -4393,8 +4385,6 @@ ips_free(ips_ha_t * ha)
                         ha->mem_ptr = NULL;
                 }
 
-                if (ha->mem_addr)
-                        release_mem_region(ha->mem_addr, ha->mem_len);
                 ha->mem_addr = 0;
 
         }
@@ -4661,8 +4651,8 @@ ips_isinit_morpheus(ips_ha_t * ha)
         uint32_t bits;
 
         METHOD_TRACE("ips_is_init_morpheus", 1);
-   
-        if (ips_isintr_morpheus(ha)) 
+
+        if (ips_isintr_morpheus(ha))
             ips_flush_and_reset(ha);
 
         post = readl(ha->mem_ptr + IPS_REG_I960_MSG0);
@@ -4686,7 +4676,7 @@ ips_isinit_morpheus(ips_ha_t * ha)
 /*   state ( was trying to INIT and an interrupt was already pending ) ...  */
 /*                                                                          */
 /****************************************************************************/
-static void 
+static void
 ips_flush_and_reset(ips_ha_t *ha)
 {
         ips_scb_t *scb;
@@ -4718,9 +4708,9 @@ ips_flush_and_reset(ips_ha_t *ha)
             if (ret == IPS_SUCCESS) {
                 time = 60 * IPS_ONE_SEC;                      /* Max Wait time is 60 seconds */
                 done = 0;
-                    
+
                 while ((time > 0) && (!done)) {
-                   done = ips_poll_for_flush_complete(ha);         
+                   done = ips_poll_for_flush_complete(ha);
                    /* This may look evil, but it's only done during extremely rare start-up conditions ! */
                    udelay(1000);
                    time--;
@@ -4749,17 +4739,17 @@ static int
 ips_poll_for_flush_complete(ips_ha_t * ha)
 {
         IPS_STATUS cstatus;
-    
+
         while (TRUE) {
             cstatus.value = (*ha->func.statupd) (ha);
 
             if (cstatus.value == 0xffffffff)      /* If No Interrupt to process */
                         break;
-            
+
             /* Success is when we see the Flush Command ID */
-            if (cstatus.fields.command_id == IPS_MAX_CMDS ) 
+            if (cstatus.fields.command_id == IPS_MAX_CMDS)
                 return 1;
-         }      
+         }
 
         return 0;
 }
@@ -4903,7 +4893,7 @@ ips_init_copperhead(ips_ha_t * ha)
         /* Enable busmastering */
         outb(IPS_BIT_EBM, ha->io_addr + IPS_REG_SCPR);
 
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 /* fix for anaconda64 */
                 outl(0, ha->io_addr + IPS_REG_NDAE);
 
@@ -4997,7 +4987,7 @@ ips_init_copperhead_memio(ips_ha_t * ha)
         /* Enable busmastering */
         writeb(IPS_BIT_EBM, ha->mem_ptr + IPS_REG_SCPR);
 
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 /* fix for anaconda64 */
                 writel(0, ha->mem_ptr + IPS_REG_NDAE);
 
@@ -5142,7 +5132,7 @@ ips_reset_copperhead(ips_ha_t * ha)
         METHOD_TRACE("ips_reset_copperhead", 1);
 
         DEBUG_VAR(1, "(%s%d) ips_reset_copperhead: io addr: %x, irq: %d",
-                  ips_name, ha->host_num, ha->io_addr, ha->irq);
+                  ips_name, ha->host_num, ha->io_addr, ha->pcidev->irq);
 
         reset_counter = 0;
 
@@ -5187,7 +5177,7 @@ ips_reset_copperhead_memio(ips_ha_t * ha)
         METHOD_TRACE("ips_reset_copperhead_memio", 1);
 
         DEBUG_VAR(1, "(%s%d) ips_reset_copperhead_memio: mem addr: %x, irq: %d",
-                  ips_name, ha->host_num, ha->mem_addr, ha->irq);
+                  ips_name, ha->host_num, ha->mem_addr, ha->pcidev->irq);
 
         reset_counter = 0;
 
@@ -5233,7 +5223,7 @@ ips_reset_morpheus(ips_ha_t * ha)
         METHOD_TRACE("ips_reset_morpheus", 1);
 
         DEBUG_VAR(1, "(%s%d) ips_reset_morpheus: mem addr: %x, irq: %d",
-                  ips_name, ha->host_num, ha->mem_addr, ha->irq);
+                  ips_name, ha->host_num, ha->mem_addr, ha->pcidev->irq);
 
         reset_counter = 0;
 
@@ -5920,7 +5910,7 @@ ips_read_config(ips_ha_t * ha, int intr)
 
                 return (0);
         }
-        
+
         memcpy(ha->conf, ha->ioctl_data, sizeof(*ha->conf));
         return (1);
 }
@@ -5959,7 +5949,7 @@ ips_readwrite_page5(ips_ha_t * ha, int write, int intr)
         scb->cmd.nvram.buffer_addr = ha->ioctl_busaddr;
         if (write)
                 memcpy(ha->ioctl_data, ha->nvram, sizeof(*ha->nvram));
-        
+
         /* issue the command */
         if (((ret =
               ips_send_wait(ha, scb, ips_cmd_timeout, intr)) == IPS_FAILURE)
@@ -6196,32 +6186,32 @@ ips_erase_bios(ips_ha_t * ha)
 
         /* Clear the status register */
         outl(0, ha->io_addr + IPS_REG_FLAP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         outb(0x50, ha->io_addr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         /* Erase Setup */
         outb(0x20, ha->io_addr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         /* Erase Confirm */
         outb(0xD0, ha->io_addr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         /* Erase Status */
         outb(0x70, ha->io_addr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         timeout = 80000;        /* 80 seconds */
 
         while (timeout > 0) {
-                if (ha->revision_id == IPS_REVID_TROMBONE64) {
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64) {
                         outl(0, ha->io_addr + IPS_REG_FLAP);
                         udelay(25);     /* 25 us */
                 }
@@ -6241,13 +6231,13 @@ ips_erase_bios(ips_ha_t * ha)
 
                 /* try to suspend the erase */
                 outb(0xB0, ha->io_addr + IPS_REG_FLDP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 /* wait for 10 seconds */
                 timeout = 10000;
                 while (timeout > 0) {
-                        if (ha->revision_id == IPS_REVID_TROMBONE64) {
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64) {
                                 outl(0, ha->io_addr + IPS_REG_FLAP);
                                 udelay(25);     /* 25 us */
                         }
@@ -6277,12 +6267,12 @@ ips_erase_bios(ips_ha_t * ha)
         /* Otherwise, we were successful */
         /* clear status */
         outb(0x50, ha->io_addr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         /* enable reads */
         outb(0xFF, ha->io_addr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         return (0);
@@ -6308,32 +6298,32 @@ ips_erase_bios_memio(ips_ha_t * ha)
 
         /* Clear the status register */
         writel(0, ha->mem_ptr + IPS_REG_FLAP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         writeb(0x50, ha->mem_ptr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         /* Erase Setup */
         writeb(0x20, ha->mem_ptr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         /* Erase Confirm */
         writeb(0xD0, ha->mem_ptr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         /* Erase Status */
         writeb(0x70, ha->mem_ptr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         timeout = 80000;        /* 80 seconds */
 
         while (timeout > 0) {
-                if (ha->revision_id == IPS_REVID_TROMBONE64) {
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64) {
                         writel(0, ha->mem_ptr + IPS_REG_FLAP);
                         udelay(25);     /* 25 us */
                 }
@@ -6353,13 +6343,13 @@ ips_erase_bios_memio(ips_ha_t * ha)
 
                 /* try to suspend the erase */
                 writeb(0xB0, ha->mem_ptr + IPS_REG_FLDP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 /* wait for 10 seconds */
                 timeout = 10000;
                 while (timeout > 0) {
-                        if (ha->revision_id == IPS_REVID_TROMBONE64) {
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64) {
                                 writel(0, ha->mem_ptr + IPS_REG_FLAP);
                                 udelay(25);     /* 25 us */
                         }
@@ -6389,12 +6379,12 @@ ips_erase_bios_memio(ips_ha_t * ha)
         /* Otherwise, we were successful */
         /* clear status */
         writeb(0x50, ha->mem_ptr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         /* enable reads */
         writeb(0xFF, ha->mem_ptr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         return (0);
@@ -6423,21 +6413,21 @@ ips_program_bios(ips_ha_t * ha, char *buffer, uint32_t buffersize,
         for (i = 0; i < buffersize; i++) {
                 /* write a byte */
                 outl(cpu_to_le32(i + offset), ha->io_addr + IPS_REG_FLAP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 outb(0x40, ha->io_addr + IPS_REG_FLDP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 outb(buffer[i], ha->io_addr + IPS_REG_FLDP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 /* wait up to one second */
                 timeout = 1000;
                 while (timeout > 0) {
-                        if (ha->revision_id == IPS_REVID_TROMBONE64) {
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64) {
                                 outl(0, ha->io_addr + IPS_REG_FLAP);
                                 udelay(25);     /* 25 us */
                         }
@@ -6454,11 +6444,11 @@ ips_program_bios(ips_ha_t * ha, char *buffer, uint32_t buffersize,
                 if (timeout == 0) {
                         /* timeout error */
                         outl(0, ha->io_addr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         outb(0xFF, ha->io_addr + IPS_REG_FLDP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         return (1);
@@ -6468,11 +6458,11 @@ ips_program_bios(ips_ha_t * ha, char *buffer, uint32_t buffersize,
                 if (status & 0x18) {
                         /* programming error */
                         outl(0, ha->io_addr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         outb(0xFF, ha->io_addr + IPS_REG_FLDP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         return (1);
@@ -6481,11 +6471,11 @@ ips_program_bios(ips_ha_t * ha, char *buffer, uint32_t buffersize,
 
         /* Enable reading */
         outl(0, ha->io_addr + IPS_REG_FLAP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         outb(0xFF, ha->io_addr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         return (0);
@@ -6514,21 +6504,21 @@ ips_program_bios_memio(ips_ha_t * ha, char *buffer, uint32_t buffersize,
         for (i = 0; i < buffersize; i++) {
                 /* write a byte */
                 writel(i + offset, ha->mem_ptr + IPS_REG_FLAP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 writeb(0x40, ha->mem_ptr + IPS_REG_FLDP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 writeb(buffer[i], ha->mem_ptr + IPS_REG_FLDP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 /* wait up to one second */
                 timeout = 1000;
                 while (timeout > 0) {
-                        if (ha->revision_id == IPS_REVID_TROMBONE64) {
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64) {
                                 writel(0, ha->mem_ptr + IPS_REG_FLAP);
                                 udelay(25);     /* 25 us */
                         }
@@ -6545,11 +6535,11 @@ ips_program_bios_memio(ips_ha_t * ha, char *buffer, uint32_t buffersize,
                 if (timeout == 0) {
                         /* timeout error */
                         writel(0, ha->mem_ptr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         writeb(0xFF, ha->mem_ptr + IPS_REG_FLDP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         return (1);
@@ -6559,11 +6549,11 @@ ips_program_bios_memio(ips_ha_t * ha, char *buffer, uint32_t buffersize,
                 if (status & 0x18) {
                         /* programming error */
                         writel(0, ha->mem_ptr + IPS_REG_FLAP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         writeb(0xFF, ha->mem_ptr + IPS_REG_FLDP);
-                        if (ha->revision_id == IPS_REVID_TROMBONE64)
+                        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                                 udelay(25);     /* 25 us */
 
                         return (1);
@@ -6572,11 +6562,11 @@ ips_program_bios_memio(ips_ha_t * ha, char *buffer, uint32_t buffersize,
 
         /* Enable reading */
         writel(0, ha->mem_ptr + IPS_REG_FLAP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         writeb(0xFF, ha->mem_ptr + IPS_REG_FLDP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         return (0);
@@ -6601,14 +6591,14 @@ ips_verify_bios(ips_ha_t * ha, char *buffer, uint32_t buffersize,
 
         /* test 1st byte */
         outl(0, ha->io_addr + IPS_REG_FLAP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         if (inb(ha->io_addr + IPS_REG_FLDP) != 0x55)
                 return (1);
 
         outl(cpu_to_le32(1), ha->io_addr + IPS_REG_FLAP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
         if (inb(ha->io_addr + IPS_REG_FLDP) != 0xAA)
                 return (1);
@@ -6617,7 +6607,7 @@ ips_verify_bios(ips_ha_t * ha, char *buffer, uint32_t buffersize,
         for (i = 2; i < buffersize; i++) {
 
                 outl(cpu_to_le32(i + offset), ha->io_addr + IPS_REG_FLAP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 checksum = (uint8_t) checksum + inb(ha->io_addr + IPS_REG_FLDP);
@@ -6650,14 +6640,14 @@ ips_verify_bios_memio(ips_ha_t * ha, char *buffer, uint32_t buffersize,
 
         /* test 1st byte */
         writel(0, ha->mem_ptr + IPS_REG_FLAP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
 
         if (readb(ha->mem_ptr + IPS_REG_FLDP) != 0x55)
                 return (1);
 
         writel(1, ha->mem_ptr + IPS_REG_FLAP);
-        if (ha->revision_id == IPS_REVID_TROMBONE64)
+        if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                 udelay(25);     /* 25 us */
         if (readb(ha->mem_ptr + IPS_REG_FLDP) != 0xAA)
                 return (1);
@@ -6666,7 +6656,7 @@ ips_verify_bios_memio(ips_ha_t * ha, char *buffer, uint32_t buffersize,
         for (i = 2; i < buffersize; i++) {
 
                 writel(i + offset, ha->mem_ptr + IPS_REG_FLAP);
-                if (ha->revision_id == IPS_REVID_TROMBONE64)
+                if (ha->pcidev->revision == IPS_REVID_TROMBONE64)
                         udelay(25);     /* 25 us */
 
                 checksum =
@@ -6837,24 +6827,18 @@ ips_register_scsi(int index)
         }
         ha = IPS_HA(sh);
         memcpy(ha, oldha, sizeof (ips_ha_t));
-        free_irq(oldha->irq, oldha);
+        free_irq(oldha->pcidev->irq, oldha);
         /* Install the interrupt handler with the new ha */
-        if (request_irq(ha->irq, do_ipsintr, IRQF_SHARED, ips_name, ha)) {
+        if (request_irq(ha->pcidev->irq, do_ipsintr, IRQF_SHARED, ips_name, ha)) {
                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
                            "Unable to install interrupt handler\n");
-                scsi_host_put(sh);
-                return -1;
+                goto err_out_sh;
         }
 
         kfree(oldha);
-        ips_sh[index] = sh;
-        ips_ha[index] = ha;
 
         /* Store away needed values for later use */
-        sh->io_port = ha->io_addr;
-        sh->n_io_port = ha->io_addr ? 255 : 0;
         sh->unique_id = (ha->io_addr) ? ha->io_addr : ha->mem_addr;
-        sh->irq = ha->irq;
         sh->sg_tablesize = sh->hostt->sg_tablesize;
         sh->can_queue = sh->hostt->can_queue;
         sh->cmd_per_lun = sh->hostt->cmd_per_lun;
@@ -6867,10 +6851,21 @@ ips_register_scsi(int index)
         sh->max_channel = ha->nbus - 1;
         sh->can_queue = ha->max_cmds - 1;
 
-        scsi_add_host(sh, NULL);
+        if (scsi_add_host(sh, &ha->pcidev->dev))
+                goto err_out;
+
+        ips_sh[index] = sh;
+        ips_ha[index] = ha;
+
         scsi_scan_host(sh);
 
         return 0;
+
+err_out:
+        free_irq(ha->pcidev->irq, ha);
+err_out_sh:
+        scsi_host_put(sh);
+        return -1;
 }
 
 /*---------------------------------------------------------------------------*/
@@ -6882,20 +6877,14 @@ ips_register_scsi(int index)
 static void __devexit
 ips_remove_device(struct pci_dev *pci_dev)
 {
-        int i;
-        struct Scsi_Host *sh;
-        ips_ha_t *ha;
+        struct Scsi_Host *sh = pci_get_drvdata(pci_dev);
 
-        for (i = 0; i < IPS_MAX_ADAPTERS; i++) {
-                ha = ips_ha[i];
-                if (ha) {
-                        if ((pci_dev->bus->number == ha->pcidev->bus->number) &&
-                            (pci_dev->devfn == ha->pcidev->devfn)) {
-                                sh = ips_sh[i];
-                                ips_release(sh);
-                        }
-                }
-        }
+        pci_set_drvdata(pci_dev, NULL);
+
+        ips_release(sh);
+
+        pci_release_regions(pci_dev);
+        pci_disable_device(pci_dev);
 }
 
 /****************************************************************************/
@@ -6949,12 +6938,17 @@ module_exit(ips_module_exit);
 static int __devinit
 ips_insert_device(struct pci_dev *pci_dev, const struct pci_device_id *ent)
 {
-        int uninitialized_var(index);
+        int index = -1;
         int rc;
 
         METHOD_TRACE("ips_insert_device", 1);
-        if (pci_enable_device(pci_dev))
-                return -1;
+        rc = pci_enable_device(pci_dev);
+        if (rc)
+                return rc;
+
+        rc = pci_request_regions(pci_dev, "ips");
+        if (rc)
+                goto err_out;
 
         rc = ips_init_phase1(pci_dev, &index);
         if (rc == SUCCESS)
@@ -6970,6 +6964,19 @@ ips_insert_device(struct pci_dev *pci_dev, const struct pci_device_id *ent)
                 ips_num_controllers++;
 
         ips_next_controller = ips_num_controllers;
+
+        if (rc < 0) {
+                rc = -ENODEV;
+                goto err_out_regions;
+        }
+
+        pci_set_drvdata(pci_dev, ips_sh[index]);
+        return 0;
+
+err_out_regions:
+        pci_release_regions(pci_dev);
+err_out:
+        pci_disable_device(pci_dev);
         return rc;
 }
 
@@ -6992,8 +6999,6 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
         uint32_t mem_len;
         uint8_t bus;
         uint8_t func;
-        uint8_t irq;
-        uint16_t subdevice_id;
         int j;
         int index;
         dma_addr_t dma_address;
@@ -7004,7 +7009,7 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
         METHOD_TRACE("ips_init_phase1", 1);
         index = IPS_MAX_ADAPTERS;
         for (j = 0; j < IPS_MAX_ADAPTERS; j++) {
-                if (ips_ha[j] == 0) {
+                if (ips_ha[j] == NULL) {
                         index = j;
                         break;
                 }
@@ -7014,7 +7019,6 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
                 return -1;
 
         /* stuff that we get in dev */
-        irq = pci_dev->irq;
         bus = pci_dev->bus->number;
         func = pci_dev->devfn;
 
@@ -7042,34 +7046,17 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
                 uint32_t base;
                 uint32_t offs;
 
-                if (!request_mem_region(mem_addr, mem_len, "ips")) {
-                        IPS_PRINTK(KERN_WARNING, pci_dev,
-                                   "Couldn't allocate IO Memory space %x len %d.\n",
-                                   mem_addr, mem_len);
-                        return -1;
-                }
-
                 base = mem_addr & PAGE_MASK;
                 offs = mem_addr - base;
                 ioremap_ptr = ioremap(base, PAGE_SIZE);
+                if (!ioremap_ptr)
+                        return -1;
                 mem_ptr = ioremap_ptr + offs;
         } else {
                 ioremap_ptr = NULL;
                 mem_ptr = NULL;
         }
 
-        /* setup I/O mapped area (if applicable) */
-        if (io_addr) {
-                if (!request_region(io_addr, io_len, "ips")) {
-                        IPS_PRINTK(KERN_WARNING, pci_dev,
-                                   "Couldn't allocate IO space %x len %d.\n",
-                                   io_addr, io_len);
-                        return -1;
-                }
-        }
-
-        subdevice_id = pci_dev->subsystem_device;
-
         /* found a controller */
         ha = kzalloc(sizeof (ips_ha_t), GFP_KERNEL);
         if (ha == NULL) {
@@ -7078,13 +7065,11 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
                 return -1;
         }
 
-
         ips_sh[index] = NULL;
         ips_ha[index] = ha;
         ha->active = 1;
 
         /* Store info in HA structure */
-        ha->irq = irq;
         ha->io_addr = io_addr;
         ha->io_len = io_len;
         ha->mem_addr = mem_addr;
@@ -7092,10 +7077,7 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
         ha->mem_ptr = mem_ptr;
         ha->ioremap_ptr = ioremap_ptr;
         ha->host_num = (uint32_t) index;
-        ha->revision_id = pci_dev->revision;
         ha->slot_num = PCI_SLOT(pci_dev->devfn);
-        ha->device_id = pci_dev->device;
-        ha->subdevice_id = subdevice_id;
         ha->pcidev = pci_dev;
 
         /*
@@ -7240,7 +7222,7 @@ ips_init_phase2(int index)
         }
 
         /* Install the interrupt handler */
-        if (request_irq(ha->irq, do_ipsintr, IRQF_SHARED, ips_name, ha)) {
+        if (request_irq(ha->pcidev->irq, do_ipsintr, IRQF_SHARED, ips_name, ha)) {
                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
                            "Unable to install interrupt handler\n");
                 return ips_abort_init(ha, index);
@@ -7253,14 +7235,14 @@ ips_init_phase2(int index)
         if (!ips_allocatescbs(ha)) {
                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
                            "Unable to allocate a CCB\n");
-                free_irq(ha->irq, ha);
+                free_irq(ha->pcidev->irq, ha);
                 return ips_abort_init(ha, index);
         }
 
         if (!ips_hainit(ha)) {
                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
                            "Unable to initialize controller\n");
-                free_irq(ha->irq, ha);
+                free_irq(ha->pcidev->irq, ha);
                 return ips_abort_init(ha, index);
         }
         /* Free the temporary SCB */
@@ -7270,7 +7252,7 @@ ips_init_phase2(int index)
         if (!ips_allocatescbs(ha)) {
                 IPS_PRINTK(KERN_WARNING, ha->pcidev,
                            "Unable to allocate CCBs\n");
-                free_irq(ha->irq, ha);
+                free_irq(ha->pcidev->irq, ha);
                 return ips_abort_init(ha, index);
         }
 
diff --git a/drivers/scsi/ips.h b/drivers/scsi/ips.h
index 3bcbd9ff056b..e0657b6f009c 100644
--- a/drivers/scsi/ips.h
+++ b/drivers/scsi/ips.h
@@ -60,14 +60,14 @@
     */
    #define IPS_HA(x)                   ((ips_ha_t *) x->hostdata)
    #define IPS_COMMAND_ID(ha, scb)     (int) (scb - ha->scbs)
-   #define IPS_IS_TROMBONE(ha)         (((ha->device_id == IPS_DEVICEID_COPPERHEAD) && \
-                                         (ha->revision_id >= IPS_REVID_TROMBONE32) && \
-                                         (ha->revision_id <= IPS_REVID_TROMBONE64)) ? 1 : 0)
-   #define IPS_IS_CLARINET(ha)         (((ha->device_id == IPS_DEVICEID_COPPERHEAD) && \
-                                         (ha->revision_id >= IPS_REVID_CLARINETP1) && \
-                                         (ha->revision_id <= IPS_REVID_CLARINETP3)) ? 1 : 0)
-   #define IPS_IS_MORPHEUS(ha)         (ha->device_id == IPS_DEVICEID_MORPHEUS)
-   #define IPS_IS_MARCO(ha)            (ha->device_id == IPS_DEVICEID_MARCO)
+   #define IPS_IS_TROMBONE(ha)         (((ha->pcidev->device == IPS_DEVICEID_COPPERHEAD) && \
+                                         (ha->pcidev->revision >= IPS_REVID_TROMBONE32) && \
+                                         (ha->pcidev->revision <= IPS_REVID_TROMBONE64)) ? 1 : 0)
+   #define IPS_IS_CLARINET(ha)         (((ha->pcidev->device == IPS_DEVICEID_COPPERHEAD) && \
+                                         (ha->pcidev->revision >= IPS_REVID_CLARINETP1) && \
+                                         (ha->pcidev->revision <= IPS_REVID_CLARINETP3)) ? 1 : 0)
+   #define IPS_IS_MORPHEUS(ha)         (ha->pcidev->device == IPS_DEVICEID_MORPHEUS)
+   #define IPS_IS_MARCO(ha)            (ha->pcidev->device == IPS_DEVICEID_MARCO)
    #define IPS_USE_I2O_DELIVER(ha)     ((IPS_IS_MORPHEUS(ha) || \
                                          (IPS_IS_TROMBONE(ha) && \
                                           (ips_force_i2o))) ? 1 : 0)
@@ -92,7 +92,7 @@
    #ifndef min
       #define min(x,y) ((x) < (y) ? x : y)
    #endif
-   
+
    #ifndef __iomem       /* For clean compiles in earlier kernels without __iomem annotations */
       #define __iomem
    #endif
@@ -171,7 +171,7 @@
    #define IPS_CMD_DOWNLOAD             0x20
    #define IPS_CMD_RW_BIOSFW            0x22
    #define IPS_CMD_GET_VERSION_INFO     0xC6
-   #define IPS_CMD_RESET_CHANNEL        0x1A  
+   #define IPS_CMD_RESET_CHANNEL        0x1A
 
    /*
     * Adapter Equates
@@ -458,7 +458,7 @@ typedef struct {
    uint32_t reserved3;
    uint32_t buffer_addr;
    uint32_t reserved4;
-} IPS_IOCTL_CMD, *PIPS_IOCTL_CMD; 
+} IPS_IOCTL_CMD, *PIPS_IOCTL_CMD;
 
 typedef struct {
    uint8_t  op_code;
@@ -552,7 +552,7 @@ typedef struct {
    uint32_t cccr;
 } IPS_NVRAM_CMD, *PIPS_NVRAM_CMD;
 
-typedef struct 
+typedef struct
 {
     uint8_t  op_code;
     uint8_t  command_id;
@@ -650,7 +650,7 @@ typedef struct {
    uint8_t   device_address;
    uint8_t   cmd_attribute;
    uint8_t   cdb_length;
-   uint8_t   reserved_for_LUN;   
+   uint8_t   reserved_for_LUN;
    uint32_t  transfer_length;
    uint32_t  buffer_pointer;
    uint16_t  sg_count;
@@ -790,7 +790,7 @@ typedef struct {
                                              /* SubSystem Parameter[4]      */
 #define  IPS_GET_VERSION_SUPPORT 0x00018000  /* Mask for Versioning Support */
 
-typedef struct 
+typedef struct
 {
    uint32_t  revision;
    uint8_t   bootBlkVersion[32];
@@ -1034,7 +1034,6 @@ typedef struct ips_ha {
    uint8_t            ha_id[IPS_MAX_CHANNELS+1];
    uint32_t           dcdb_active[IPS_MAX_CHANNELS];
    uint32_t           io_addr;            /* Base I/O address           */
-   uint8_t            irq;                /* IRQ for adapter            */
    uint8_t            ntargets;           /* Number of targets          */
    uint8_t            nbus;               /* Number of buses            */
    uint8_t            nlun;               /* Number of Luns             */
@@ -1066,10 +1065,7 @@ typedef struct ips_ha {
    int                ioctl_reset;        /* IOCTL Requested Reset Flag */
    uint16_t           reset_count;        /* number of resets           */
    time_t             last_ffdc;          /* last time we sent ffdc info*/
-   uint8_t            revision_id;        /* Revision level             */
-   uint16_t           device_id;          /* PCI device ID              */
    uint8_t            slot_num;           /* PCI Slot Number            */
-   uint16_t           subdevice_id;       /* Subsystem device ID        */
    int                ioctl_len;          /* size of ioctl buffer       */
    dma_addr_t         ioctl_busaddr;      /* dma address of ioctl buffer*/
    uint8_t            bios_version[8];    /* BIOS Revision              */
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 57ce2251abc8..e5be5fd4ef58 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -48,7 +48,7 @@ MODULE_AUTHOR("Dmitry Yusupov <dmitry_yus@yahoo.com>, "
               "Alex Aizman <itn780@yahoo.com>");
 MODULE_DESCRIPTION("iSCSI/TCP data-path");
 MODULE_LICENSE("GPL");
-/* #define DEBUG_TCP */
+#undef DEBUG_TCP
 #define DEBUG_ASSERT
 
 #ifdef DEBUG_TCP
@@ -67,115 +67,429 @@ MODULE_LICENSE("GPL");
 static unsigned int iscsi_max_lun = 512;
 module_param_named(max_lun, iscsi_max_lun, uint, S_IRUGO);
 
+static int iscsi_tcp_hdr_recv_done(struct iscsi_tcp_conn *tcp_conn,
+                                   struct iscsi_segment *segment);
+
+/*
+ * Scatterlist handling: inside the iscsi_segment, we
+ * remember an index into the scatterlist, and set data/size
+ * to the current scatterlist entry. For highmem pages, we
+ * kmap as needed.
+ *
+ * Note that the page is unmapped when we return from
+ * TCP's data_ready handler, so we may end up mapping and
+ * unmapping the same page repeatedly. The whole reason
+ * for this is that we shouldn't keep the page mapped
+ * outside the softirq.
+ */
+
+/**
+ * iscsi_tcp_segment_init_sg - init indicated scatterlist entry
+ * @segment: the buffer object
+ * @sg: scatterlist
+ * @offset: byte offset into that sg entry
+ *
+ * This function sets up the segment so that subsequent
+ * data is copied to the indicated sg entry, at the given
+ * offset.
+ */
 static inline void
-iscsi_buf_init_iov(struct iscsi_buf *ibuf, char *vbuf, int size)
+iscsi_tcp_segment_init_sg(struct iscsi_segment *segment,
+                          struct scatterlist *sg, unsigned int offset)
 {
-        sg_init_one(&ibuf->sg, vbuf, size);
-        ibuf->sent = 0;
-        ibuf->use_sendmsg = 1;
+        segment->sg = sg;
+        segment->sg_offset = offset;
+        segment->size = min(sg->length - offset,
+                            segment->total_size - segment->total_copied);
+        segment->data = NULL;
 }
 
+/**
+ * iscsi_tcp_segment_map - map the current S/G page
+ * @segment: iscsi_segment
+ * @recv: 1 if called from recv path
+ *
+ * We only need to possibly kmap data if scatter lists are being used,
+ * because the iscsi passthrough and internal IO paths will never use high
+ * mem pages.
+ */
 static inline void
-iscsi_buf_init_sg(struct iscsi_buf *ibuf, struct scatterlist *sg)
+iscsi_tcp_segment_map(struct iscsi_segment *segment, int recv)
 {
-        sg_init_table(&ibuf->sg, 1);
-        sg_set_page(&ibuf->sg, sg_page(sg), sg->length, sg->offset);
+        struct scatterlist *sg;
+
+        if (segment->data != NULL || !segment->sg)
+                return;
+
+        sg = segment->sg;
+        BUG_ON(segment->sg_mapped);
+        BUG_ON(sg->length == 0);
+
         /*
-         * Fastpath: sg element fits into single page
+         * If the page count is greater than one it is ok to send
+         * to the network layer's zero copy send path. If not we
+         * have to go the slow sendmsg path. We always map for the
+         * recv path.
          */
-        if (sg->length + sg->offset <= PAGE_SIZE && !PageSlab(sg_page(sg)))
-                ibuf->use_sendmsg = 0;
-        else
-                ibuf->use_sendmsg = 1;
-        ibuf->sent = 0;
+        if (page_count(sg_page(sg)) >= 1 && !recv)
+                return;
+
+        debug_tcp("iscsi_tcp_segment_map %s %p\n", recv ? "recv" : "xmit",
+                  segment);
+        segment->sg_mapped = kmap_atomic(sg_page(sg), KM_SOFTIRQ0);
+        segment->data = segment->sg_mapped + sg->offset + segment->sg_offset;
 }
 
-static inline int
-iscsi_buf_left(struct iscsi_buf *ibuf)
+static inline void
+iscsi_tcp_segment_unmap(struct iscsi_segment *segment)
 {
-        int rc;
+        debug_tcp("iscsi_tcp_segment_unmap %p\n", segment);
 
-        rc = ibuf->sg.length - ibuf->sent;
-        BUG_ON(rc < 0);
-        return rc;
+        if (segment->sg_mapped) {
+                debug_tcp("iscsi_tcp_segment_unmap valid\n");
+                kunmap_atomic(segment->sg_mapped, KM_SOFTIRQ0);
+                segment->sg_mapped = NULL;
+                segment->data = NULL;
+        }
 }
 
+/*
+ * Splice the digest buffer into the buffer
+ */
 static inline void
-iscsi_hdr_digest(struct iscsi_conn *conn, struct iscsi_buf *buf,
-                 u8* crc)
+iscsi_tcp_segment_splice_digest(struct iscsi_segment *segment, void *digest)
 {
-        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-
-        crypto_hash_digest(&tcp_conn->tx_hash, &buf->sg, buf->sg.length, crc);
-        buf->sg.length += sizeof(u32);
+        segment->data = digest;
+        segment->digest_len = ISCSI_DIGEST_SIZE;
+        segment->total_size += ISCSI_DIGEST_SIZE;
+        segment->size = ISCSI_DIGEST_SIZE;
+        segment->copied = 0;
+        segment->sg = NULL;
+        segment->hash = NULL;
 }
 
+/**
+ * iscsi_tcp_segment_done - check whether the segment is complete
+ * @segment: iscsi segment to check
+ * @recv: set to one of this is called from the recv path
+ * @copied: number of bytes copied
+ *
+ * Check if we're done receiving this segment. If the receive
+ * buffer is full but we expect more data, move on to the
+ * next entry in the scatterlist.
+ *
+ * If the amount of data we received isn't a multiple of 4,
+ * we will transparently receive the pad bytes, too.
+ *
+ * This function must be re-entrant.
+ */
 static inline int
-iscsi_hdr_extract(struct iscsi_tcp_conn *tcp_conn)
+iscsi_tcp_segment_done(struct iscsi_segment *segment, int recv, unsigned copied)
 {
-        struct sk_buff *skb = tcp_conn->in.skb;
-
-        tcp_conn->in.zero_copy_hdr = 0;
+        static unsigned char padbuf[ISCSI_PAD_LEN];
+        struct scatterlist sg;
+        unsigned int pad;
 
-        if (tcp_conn->in.copy >= tcp_conn->hdr_size &&
-            tcp_conn->in_progress == IN_PROGRESS_WAIT_HEADER) {
+        debug_tcp("copied %u %u size %u %s\n", segment->copied, copied,
+                  segment->size, recv ? "recv" : "xmit");
+        if (segment->hash && copied) {
                 /*
-                 * Zero-copy PDU Header: using connection context
-                 * to store header pointer.
+                 * If a segment is kmapd we must unmap it before sending
+                 * to the crypto layer since that will try to kmap it again.
                  */
-                if (skb_shinfo(skb)->frag_list == NULL &&
-                    !skb_shinfo(skb)->nr_frags) {
-                        tcp_conn->in.hdr = (struct iscsi_hdr *)
-                                ((char*)skb->data + tcp_conn->in.offset);
-                        tcp_conn->in.zero_copy_hdr = 1;
+                iscsi_tcp_segment_unmap(segment);
+
+                if (!segment->data) {
+                        sg_init_table(&sg, 1);
+                        sg_set_page(&sg, sg_page(segment->sg), copied,
+                                    segment->copied + segment->sg_offset +
+                                                        segment->sg->offset);
+                } else
+                        sg_init_one(&sg, segment->data + segment->copied,
+                                    copied);
+                crypto_hash_update(segment->hash, &sg, copied);
+        }
+
+        segment->copied += copied;
+        if (segment->copied < segment->size) {
+                iscsi_tcp_segment_map(segment, recv);
+                return 0;
+        }
+
+        segment->total_copied += segment->copied;
+        segment->copied = 0;
+        segment->size = 0;
+
+        /* Unmap the current scatterlist page, if there is one. */
+        iscsi_tcp_segment_unmap(segment);
+
+        /* Do we have more scatterlist entries? */
+        debug_tcp("total copied %u total size %u\n", segment->total_copied,
+                   segment->total_size);
+        if (segment->total_copied < segment->total_size) {
+                /* Proceed to the next entry in the scatterlist. */
+                iscsi_tcp_segment_init_sg(segment, sg_next(segment->sg),
+                                          0);
+                iscsi_tcp_segment_map(segment, recv);
+                BUG_ON(segment->size == 0);
+                return 0;
+        }
+
+        /* Do we need to handle padding? */
+        pad = iscsi_padding(segment->total_copied);
+        if (pad != 0) {
+                debug_tcp("consume %d pad bytes\n", pad);
+                segment->total_size += pad;
+                segment->size = pad;
+                segment->data = padbuf;
+                return 0;
+        }
+
+        /*
+         * Set us up for transferring the data digest. hdr digest
+         * is completely handled in hdr done function.
+         */
+        if (segment->hash) {
+                crypto_hash_final(segment->hash, segment->digest);
+                iscsi_tcp_segment_splice_digest(segment,
+                                 recv ? segment->recv_digest : segment->digest);
+                return 0;
+        }
+
+        return 1;
+}
+
+/**
+ * iscsi_tcp_xmit_segment - transmit segment
+ * @tcp_conn: the iSCSI TCP connection
+ * @segment: the buffer to transmnit
+ *
+ * This function transmits as much of the buffer as
+ * the network layer will accept, and returns the number of
+ * bytes transmitted.
+ *
+ * If CRC hashing is enabled, the function will compute the
+ * hash as it goes. When the entire segment has been transmitted,
+ * it will retrieve the hash value and send it as well.
+ */
+static int
+iscsi_tcp_xmit_segment(struct iscsi_tcp_conn *tcp_conn,
+                       struct iscsi_segment *segment)
+{
+        struct socket *sk = tcp_conn->sock;
+        unsigned int copied = 0;
+        int r = 0;
+
+        while (!iscsi_tcp_segment_done(segment, 0, r)) {
+                struct scatterlist *sg;
+                unsigned int offset, copy;
+                int flags = 0;
+
+                r = 0;
+                offset = segment->copied;
+                copy = segment->size - offset;
+
+                if (segment->total_copied + segment->size < segment->total_size)
+                        flags |= MSG_MORE;
+
+                /* Use sendpage if we can; else fall back to sendmsg */
+                if (!segment->data) {
+                        sg = segment->sg;
+                        offset += segment->sg_offset + sg->offset;
+                        r = tcp_conn->sendpage(sk, sg_page(sg), offset, copy,
+                                               flags);
                 } else {
-                        /* ignoring return code since we checked
-                         * in.copy before */
-                        skb_copy_bits(skb, tcp_conn->in.offset,
-                                &tcp_conn->hdr, tcp_conn->hdr_size);
-                        tcp_conn->in.hdr = &tcp_conn->hdr;
+                        struct msghdr msg = { .msg_flags = flags };
+                        struct kvec iov = {
+                                .iov_base = segment->data + offset,
+                                .iov_len = copy
+                        };
+
+                        r = kernel_sendmsg(sk, &msg, &iov, 1, copy);
                 }
-                tcp_conn->in.offset += tcp_conn->hdr_size;
-                tcp_conn->in.copy -= tcp_conn->hdr_size;
-        } else {
-                int hdr_remains;
-                int copylen;
 
-                /*
-                 * PDU header scattered across SKB's,
-                 * copying it... This'll happen quite rarely.
-                 */
+                if (r < 0) {
+                        iscsi_tcp_segment_unmap(segment);
+                        if (copied || r == -EAGAIN)
+                                break;
+                        return r;
+                }
+                copied += r;
+        }
+        return copied;
+}
+
+/**
+ * iscsi_tcp_segment_recv - copy data to segment
+ * @tcp_conn: the iSCSI TCP connection
+ * @segment: the buffer to copy to
+ * @ptr: data pointer
+ * @len: amount of data available
+ *
+ * This function copies up to @len bytes to the
+ * given buffer, and returns the number of bytes
+ * consumed, which can actually be less than @len.
+ *
+ * If hash digest is enabled, the function will update the
+ * hash while copying.
+ * Combining these two operations doesn't buy us a lot (yet),
+ * but in the future we could implement combined copy+crc,
+ * just way we do for network layer checksums.
+ */
+static int
+iscsi_tcp_segment_recv(struct iscsi_tcp_conn *tcp_conn,
+                       struct iscsi_segment *segment, const void *ptr,
+                       unsigned int len)
+{
+        unsigned int copy = 0, copied = 0;
+
+        while (!iscsi_tcp_segment_done(segment, 1, copy)) {
+                if (copied == len) {
+                        debug_tcp("iscsi_tcp_segment_recv copied %d bytes\n",
+                                  len);
+                        break;
+                }
+
+                copy = min(len - copied, segment->size - segment->copied);
+                debug_tcp("iscsi_tcp_segment_recv copying %d\n", copy);
+                memcpy(segment->data + segment->copied, ptr + copied, copy);
+                copied += copy;
+        }
+        return copied;
+}
 
-                if (tcp_conn->in_progress == IN_PROGRESS_WAIT_HEADER)
-                        tcp_conn->in.hdr_offset = 0;
+static inline void
+iscsi_tcp_dgst_header(struct hash_desc *hash, const void *hdr, size_t hdrlen,
+                      unsigned char digest[ISCSI_DIGEST_SIZE])
+{
+        struct scatterlist sg;
 
-                hdr_remains = tcp_conn->hdr_size - tcp_conn->in.hdr_offset;
-                BUG_ON(hdr_remains <= 0);
+        sg_init_one(&sg, hdr, hdrlen);
+        crypto_hash_digest(hash, &sg, hdrlen, digest);
+}
 
-                copylen = min(tcp_conn->in.copy, hdr_remains);
-                skb_copy_bits(skb, tcp_conn->in.offset,
-                        (char*)&tcp_conn->hdr + tcp_conn->in.hdr_offset,
-                        copylen);
+static inline int
+iscsi_tcp_dgst_verify(struct iscsi_tcp_conn *tcp_conn,
+                      struct iscsi_segment *segment)
+{
+        if (!segment->digest_len)
+                return 1;
 
-                debug_tcp("PDU gather offset %d bytes %d in.offset %d "
-                       "in.copy %d\n", tcp_conn->in.hdr_offset, copylen,
-                       tcp_conn->in.offset, tcp_conn->in.copy);
+        if (memcmp(segment->recv_digest, segment->digest,
+                   segment->digest_len)) {
+                debug_scsi("digest mismatch\n");
+                return 0;
+        }
 
-                tcp_conn->in.offset += copylen;
-                tcp_conn->in.copy -= copylen;
-                if (copylen < hdr_remains)  {
-                        tcp_conn->in_progress = IN_PROGRESS_HEADER_GATHER;
-                        tcp_conn->in.hdr_offset += copylen;
-                        return -EAGAIN;
+        return 1;
+}
+
+/*
+ * Helper function to set up segment buffer
+ */
+static inline void
+__iscsi_segment_init(struct iscsi_segment *segment, size_t size,
+                     iscsi_segment_done_fn_t *done, struct hash_desc *hash)
+{
+        memset(segment, 0, sizeof(*segment));
+        segment->total_size = size;
+        segment->done = done;
+
+        if (hash) {
+                segment->hash = hash;
+                crypto_hash_init(hash);
+        }
+}
+
+static inline void
+iscsi_segment_init_linear(struct iscsi_segment *segment, void *data,
+                          size_t size, iscsi_segment_done_fn_t *done,
+                          struct hash_desc *hash)
+{
+        __iscsi_segment_init(segment, size, done, hash);
+        segment->data = data;
+        segment->size = size;
+}
+
+static inline int
+iscsi_segment_seek_sg(struct iscsi_segment *segment,
+                      struct scatterlist *sg_list, unsigned int sg_count,
+                      unsigned int offset, size_t size,
+                      iscsi_segment_done_fn_t *done, struct hash_desc *hash)
+{
+        struct scatterlist *sg;
+        unsigned int i;
+
+        debug_scsi("iscsi_segment_seek_sg offset %u size %llu\n",
+                  offset, size);
+        __iscsi_segment_init(segment, size, done, hash);
+        for_each_sg(sg_list, sg, sg_count, i) {
+                debug_scsi("sg %d, len %u offset %u\n", i, sg->length,
+                           sg->offset);
+                if (offset < sg->length) {
+                        iscsi_tcp_segment_init_sg(segment, sg, offset);
+                        return 0;
                 }
-                tcp_conn->in.hdr = &tcp_conn->hdr;
-                tcp_conn->discontiguous_hdr_cnt++;
-                tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER;
+                offset -= sg->length;
         }
 
+        return ISCSI_ERR_DATA_OFFSET;
+}
+
+/**
+ * iscsi_tcp_hdr_recv_prep - prep segment for hdr reception
+ * @tcp_conn: iscsi connection to prep for
+ *
+ * This function always passes NULL for the hash argument, because when this
+ * function is called we do not yet know the final size of the header and want
+ * to delay the digest processing until we know that.
+ */
+static void
+iscsi_tcp_hdr_recv_prep(struct iscsi_tcp_conn *tcp_conn)
+{
+        debug_tcp("iscsi_tcp_hdr_recv_prep(%p%s)\n", tcp_conn,
+                  tcp_conn->iscsi_conn->hdrdgst_en ? ", digest enabled" : "");
+        iscsi_segment_init_linear(&tcp_conn->in.segment,
+                                tcp_conn->in.hdr_buf, sizeof(struct iscsi_hdr),
+                                iscsi_tcp_hdr_recv_done, NULL);
+}
+
+/*
+ * Handle incoming reply to any other type of command
+ */
+static int
+iscsi_tcp_data_recv_done(struct iscsi_tcp_conn *tcp_conn,
+                         struct iscsi_segment *segment)
+{
+        struct iscsi_conn *conn = tcp_conn->iscsi_conn;
+        int rc = 0;
+
+        if (!iscsi_tcp_dgst_verify(tcp_conn, segment))
+                return ISCSI_ERR_DATA_DGST;
+
+        rc = iscsi_complete_pdu(conn, tcp_conn->in.hdr,
+                        conn->data, tcp_conn->in.datalen);
+        if (rc)
+                return rc;
+
+        iscsi_tcp_hdr_recv_prep(tcp_conn);
         return 0;
 }
 
+static void
+iscsi_tcp_data_recv_prep(struct iscsi_tcp_conn *tcp_conn)
+{
+        struct iscsi_conn *conn = tcp_conn->iscsi_conn;
+        struct hash_desc *rx_hash = NULL;
+
+        if (conn->datadgst_en)
+                rx_hash = &tcp_conn->rx_hash;
+
+        iscsi_segment_init_linear(&tcp_conn->in.segment,
+                                conn->data, tcp_conn->in.datalen,
+                                iscsi_tcp_data_recv_done, rx_hash);
+}
+
 /*
  * must be called with session lock
  */
@@ -184,7 +498,6 @@ iscsi_tcp_cleanup_ctask(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
 {
         struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
         struct iscsi_r2t_info *r2t;
-        struct scsi_cmnd *sc;
 
         /* flush ctask's r2t queues */
         while (__kfifo_get(tcp_ctask->r2tqueue, (void*)&r2t, sizeof(void*))) {
@@ -193,12 +506,12 @@ iscsi_tcp_cleanup_ctask(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
                 debug_scsi("iscsi_tcp_cleanup_ctask pending r2t dropped\n");
         }
 
-        sc = ctask->sc;
-        if (unlikely(!sc))
-                return;
-
-        tcp_ctask->xmstate = XMSTATE_VALUE_IDLE;
-        tcp_ctask->r2t = NULL;
+        r2t = tcp_ctask->r2t;
+        if (r2t != NULL) {
+                __kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
+                            sizeof(void*));
+                tcp_ctask->r2t = NULL;
+        }
 }
 
 /**
@@ -217,11 +530,6 @@ iscsi_data_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
         int datasn = be32_to_cpu(rhdr->datasn);
 
         iscsi_update_cmdsn(session, (struct iscsi_nopin*)rhdr);
-        /*
-         * setup Data-In byte counter (gets decremented..)
-         */
-        ctask->data_count = tcp_conn->in.datalen;
-
         if (tcp_conn->in.datalen == 0)
                 return 0;
 
@@ -242,22 +550,20 @@ iscsi_data_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
         }
 
         if (rhdr->flags & ISCSI_FLAG_DATA_STATUS) {
+                sc->result = (DID_OK << 16) | rhdr->cmd_status;
                 conn->exp_statsn = be32_to_cpu(rhdr->statsn) + 1;
-                if (rhdr->flags & ISCSI_FLAG_DATA_UNDERFLOW) {
+                if (rhdr->flags & (ISCSI_FLAG_DATA_UNDERFLOW |
+                                   ISCSI_FLAG_DATA_OVERFLOW)) {
                         int res_count = be32_to_cpu(rhdr->residual_count);
 
                         if (res_count > 0 &&
-                            res_count <= scsi_bufflen(sc)) {
+                            (rhdr->flags & ISCSI_FLAG_CMD_OVERFLOW ||
+                             res_count <= scsi_bufflen(sc)))
                                 scsi_set_resid(sc, res_count);
-                                sc->result = (DID_OK << 16) | rhdr->cmd_status;
-                        } else
+                        else
                                 sc->result = (DID_BAD_TARGET << 16) |
                                         rhdr->cmd_status;
-                } else if (rhdr->flags & ISCSI_FLAG_DATA_OVERFLOW) {
-                        scsi_set_resid(sc, be32_to_cpu(rhdr->residual_count));
-                        sc->result = (DID_OK << 16) | rhdr->cmd_status;
-                } else
-                        sc->result = (DID_OK << 16) | rhdr->cmd_status;
+                }
         }
 
         conn->datain_pdus_cnt++;
@@ -281,9 +587,6 @@ iscsi_solicit_data_init(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
                         struct iscsi_r2t_info *r2t)
 {
         struct iscsi_data *hdr;
-        struct scsi_cmnd *sc = ctask->sc;
-        int i, sg_count = 0;
-        struct scatterlist *sg;
 
         hdr = &r2t->dtask.hdr;
         memset(hdr, 0, sizeof(struct iscsi_data));
@@ -307,34 +610,6 @@ iscsi_solicit_data_init(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
         conn->dataout_pdus_cnt++;
 
         r2t->sent = 0;
-
-        iscsi_buf_init_iov(&r2t->headbuf, (char*)hdr,
-                           sizeof(struct iscsi_hdr));
-
-        sg = scsi_sglist(sc);
-        r2t->sg = NULL;
-        for (i = 0; i < scsi_sg_count(sc); i++, sg += 1) {
-                /* FIXME: prefetch ? */
-                if (sg_count + sg->length > r2t->data_offset) {
-                        int page_offset;
-
-                        /* sg page found! */
-
-                        /* offset within this page */
-                        page_offset = r2t->data_offset - sg_count;
-
-                        /* fill in this buffer */
-                        iscsi_buf_init_sg(&r2t->sendbuf, sg);
-                        r2t->sendbuf.sg.offset += page_offset;
-                        r2t->sendbuf.sg.length -= page_offset;
-
-                        /* xmit logic will continue with next one */
-                        r2t->sg = sg + 1;
-                        break;
-                }
-                sg_count += sg->length;
-        }
-        BUG_ON(r2t->sg == NULL);
 }
 
 /**
@@ -366,14 +641,11 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
         }
 
         /* fill-in new R2T associated with the task */
-        spin_lock(&session->lock);
         iscsi_update_cmdsn(session, (struct iscsi_nopin*)rhdr);
 
-        if (!ctask->sc || ctask->mtask ||
-             session->state != ISCSI_STATE_LOGGED_IN) {
+        if (!ctask->sc || session->state != ISCSI_STATE_LOGGED_IN) {
                 printk(KERN_INFO "iscsi_tcp: dropping R2T itt %d in "
                        "recovery...\n", ctask->itt);
-                spin_unlock(&session->lock);
                 return 0;
         }
 
@@ -384,7 +656,8 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
         r2t->data_length = be32_to_cpu(rhdr->data_length);
         if (r2t->data_length == 0) {
                 printk(KERN_ERR "iscsi_tcp: invalid R2T with zero data len\n");
-                spin_unlock(&session->lock);
+                __kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
+                            sizeof(void*));
                 return ISCSI_ERR_DATALEN;
         }
 
@@ -395,10 +668,11 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
 
         r2t->data_offset = be32_to_cpu(rhdr->data_offset);
         if (r2t->data_offset + r2t->data_length > scsi_bufflen(ctask->sc)) {
-                spin_unlock(&session->lock);
                 printk(KERN_ERR "iscsi_tcp: invalid R2T with data len %u at "
                        "offset %u and total length %d\n", r2t->data_length,
                        r2t->data_offset, scsi_bufflen(ctask->sc));
+                __kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
+                            sizeof(void*));
                 return ISCSI_ERR_DATALEN;
         }
 
@@ -409,26 +683,55 @@ iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
 
         tcp_ctask->exp_datasn = r2tsn + 1;
         __kfifo_put(tcp_ctask->r2tqueue, (void*)&r2t, sizeof(void*));
-        set_bit(XMSTATE_BIT_SOL_HDR_INIT, &tcp_ctask->xmstate);
-        list_move_tail(&ctask->running, &conn->xmitqueue);
-
-        scsi_queue_work(session->host, &conn->xmitwork);
         conn->r2t_pdus_cnt++;
-        spin_unlock(&session->lock);
 
+        iscsi_requeue_ctask(ctask);
         return 0;
 }
 
+/*
+ * Handle incoming reply to DataIn command
+ */
 static int
-iscsi_tcp_hdr_recv(struct iscsi_conn *conn)
+iscsi_tcp_process_data_in(struct iscsi_tcp_conn *tcp_conn,
+                          struct iscsi_segment *segment)
+{
+        struct iscsi_conn *conn = tcp_conn->iscsi_conn;
+        struct iscsi_hdr *hdr = tcp_conn->in.hdr;
+        int rc;
+
+        if (!iscsi_tcp_dgst_verify(tcp_conn, segment))
+                return ISCSI_ERR_DATA_DGST;
+
+        /* check for non-exceptional status */
+        if (hdr->flags & ISCSI_FLAG_DATA_STATUS) {
+                rc = iscsi_complete_pdu(conn, tcp_conn->in.hdr, NULL, 0);
+                if (rc)
+                        return rc;
+        }
+
+        iscsi_tcp_hdr_recv_prep(tcp_conn);
+        return 0;
+}
+
+/**
+ * iscsi_tcp_hdr_dissect - process PDU header
+ * @conn: iSCSI connection
+ * @hdr: PDU header
+ *
+ * This function analyzes the header of the PDU received,
+ * and performs several sanity checks. If the PDU is accompanied
+ * by data, the receive buffer is set up to copy the incoming data
+ * to the correct location.
+ */
+static int
+iscsi_tcp_hdr_dissect(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
 {
         int rc = 0, opcode, ahslen;
-        struct iscsi_hdr *hdr;
         struct iscsi_session *session = conn->session;
         struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-        uint32_t cdgst, rdgst = 0, itt;
-
-        hdr = tcp_conn->in.hdr;
+        struct iscsi_cmd_task *ctask;
+        uint32_t itt;
 
         /* verify PDU length */
         tcp_conn->in.datalen = ntoh24(hdr->dlength);
@@ -437,78 +740,73 @@ iscsi_tcp_hdr_recv(struct iscsi_conn *conn)
                        tcp_conn->in.datalen, conn->max_recv_dlength);
                 return ISCSI_ERR_DATALEN;
         }
-        tcp_conn->data_copied = 0;
 
-        /* read AHS */
+        /* Additional header segments. So far, we don't
+         * process additional headers.
+         */
         ahslen = hdr->hlength << 2;
-        tcp_conn->in.offset += ahslen;
-        tcp_conn->in.copy -= ahslen;
-        if (tcp_conn->in.copy < 0) {
-                printk(KERN_ERR "iscsi_tcp: can't handle AHS with length "
-                       "%d bytes\n", ahslen);
-                return ISCSI_ERR_AHSLEN;
-        }
-
-        /* calculate read padding */
-        tcp_conn->in.padding = tcp_conn->in.datalen & (ISCSI_PAD_LEN-1);
-        if (tcp_conn->in.padding) {
-                tcp_conn->in.padding = ISCSI_PAD_LEN - tcp_conn->in.padding;
-                debug_scsi("read padding %d bytes\n", tcp_conn->in.padding);
-        }
-
-        if (conn->hdrdgst_en) {
-                struct scatterlist sg;
-
-                sg_init_one(&sg, (u8 *)hdr,
-                            sizeof(struct iscsi_hdr) + ahslen);
-                crypto_hash_digest(&tcp_conn->rx_hash, &sg, sg.length,
-                                   (u8 *)&cdgst);
-                rdgst = *(uint32_t*)((char*)hdr + sizeof(struct iscsi_hdr) +
-                                     ahslen);
-                if (cdgst != rdgst) {
-                        printk(KERN_ERR "iscsi_tcp: hdrdgst error "
-                               "recv 0x%x calc 0x%x\n", rdgst, cdgst);
-                        return ISCSI_ERR_HDR_DGST;
-                }
-        }
 
         opcode = hdr->opcode & ISCSI_OPCODE_MASK;
         /* verify itt (itt encoding: age+cid+itt) */
         rc = iscsi_verify_itt(conn, hdr, &itt);
-        if (rc == ISCSI_ERR_NO_SCSI_CMD) {
-                tcp_conn->in.datalen = 0; /* force drop */
-                return 0;
-        } else if (rc)
+        if (rc)
                 return rc;
 
-        debug_tcp("opcode 0x%x offset %d copy %d ahslen %d datalen %d\n",
-                  opcode, tcp_conn->in.offset, tcp_conn->in.copy,
-                  ahslen, tcp_conn->in.datalen);
+        debug_tcp("opcode 0x%x ahslen %d datalen %d\n",
+                  opcode, ahslen, tcp_conn->in.datalen);
 
         switch(opcode) {
         case ISCSI_OP_SCSI_DATA_IN:
-                tcp_conn->in.ctask = session->cmds[itt];
-                rc = iscsi_data_rsp(conn, tcp_conn->in.ctask);
+                ctask = session->cmds[itt];
+                spin_lock(&conn->session->lock);
+                rc = iscsi_data_rsp(conn, ctask);
+                spin_unlock(&conn->session->lock);
                 if (rc)
                         return rc;
+                if (tcp_conn->in.datalen) {
+                        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
+                        struct hash_desc *rx_hash = NULL;
+
+                        /*
+                         * Setup copy of Data-In into the Scsi_Cmnd
+                         * Scatterlist case:
+                         * We set up the iscsi_segment to point to the next
+                         * scatterlist entry to copy to. As we go along,
+                         * we move on to the next scatterlist entry and
+                         * update the digest per-entry.
+                         */
+                        if (conn->datadgst_en)
+                                rx_hash = &tcp_conn->rx_hash;
+
+                        debug_tcp("iscsi_tcp_begin_data_in(%p, offset=%d, "
+                                  "datalen=%d)\n", tcp_conn,
+                                  tcp_ctask->data_offset,
+                                  tcp_conn->in.datalen);
+                        return iscsi_segment_seek_sg(&tcp_conn->in.segment,
+                                                     scsi_sglist(ctask->sc),
+                                                     scsi_sg_count(ctask->sc),
+                                                     tcp_ctask->data_offset,
+                                                     tcp_conn->in.datalen,
+                                                     iscsi_tcp_process_data_in,
+                                                     rx_hash);
+                }
                 /* fall through */
         case ISCSI_OP_SCSI_CMD_RSP:
-                tcp_conn->in.ctask = session->cmds[itt];
-                if (tcp_conn->in.datalen)
-                        goto copy_hdr;
-
-                spin_lock(&session->lock);
-                rc = __iscsi_complete_pdu(conn, hdr, NULL, 0);
-                spin_unlock(&session->lock);
+                if (tcp_conn->in.datalen) {
+                        iscsi_tcp_data_recv_prep(tcp_conn);
+                        return 0;
+                }
+                rc = iscsi_complete_pdu(conn, hdr, NULL, 0);
                 break;
         case ISCSI_OP_R2T:
-                tcp_conn->in.ctask = session->cmds[itt];
+                ctask = session->cmds[itt];
                 if (ahslen)
                         rc = ISCSI_ERR_AHSLEN;
-                else if (tcp_conn->in.ctask->sc->sc_data_direction ==
-                                                                DMA_TO_DEVICE)
-                        rc = iscsi_r2t_rsp(conn, tcp_conn->in.ctask);
-                else
+                else if (ctask->sc->sc_data_direction == DMA_TO_DEVICE) {
+                        spin_lock(&session->lock);
+                        rc = iscsi_r2t_rsp(conn, ctask);
+                        spin_unlock(&session->lock);
+                } else
                         rc = ISCSI_ERR_PROTO;
                 break;
         case ISCSI_OP_LOGIN_RSP:
@@ -520,8 +818,7 @@ iscsi_tcp_hdr_recv(struct iscsi_conn *conn)
                  * than 8K, but there are no targets that currently do this.
                  * For now we fail until we find a vendor that needs it
                  */
-                if (ISCSI_DEF_MAX_RECV_SEG_LEN <
-                    tcp_conn->in.datalen) {
+                if (ISCSI_DEF_MAX_RECV_SEG_LEN < tcp_conn->in.datalen) {
                         printk(KERN_ERR "iscsi_tcp: received buffer of len %u "
                               "but conn buffer is only %u (opcode %0x)\n",
                               tcp_conn->in.datalen,
@@ -530,8 +827,13 @@ iscsi_tcp_hdr_recv(struct iscsi_conn *conn)
                         break;
                 }
 
-                if (tcp_conn->in.datalen)
-                        goto copy_hdr;
+                /* If there's data coming in with the response,
+                 * receive it to the connection's buffer.
+                 */
+                if (tcp_conn->in.datalen) {
+                        iscsi_tcp_data_recv_prep(tcp_conn);
+                        return 0;
+                }
         /* fall through */
         case ISCSI_OP_LOGOUT_RSP:
         case ISCSI_OP_NOOP_IN:
@@ -543,461 +845,161 @@ iscsi_tcp_hdr_recv(struct iscsi_conn *conn)
                 break;
         }
 
-        return rc;
-
-copy_hdr:
-        /*
-         * if we did zero copy for the header but we will need multiple
-         * skbs to complete the command then we have to copy the header
-         * for later use
-         */
-        if (tcp_conn->in.zero_copy_hdr && tcp_conn->in.copy <=
-           (tcp_conn->in.datalen + tcp_conn->in.padding +
-            (conn->datadgst_en ? 4 : 0))) {
-                debug_tcp("Copying header for later use. in.copy %d in.datalen"
-                          " %d\n", tcp_conn->in.copy, tcp_conn->in.datalen);
-                memcpy(&tcp_conn->hdr, tcp_conn->in.hdr,
-                       sizeof(struct iscsi_hdr));
-                tcp_conn->in.hdr = &tcp_conn->hdr;
-                tcp_conn->in.zero_copy_hdr = 0;
-        }
-        return 0;
-}
-
-/**
- * iscsi_ctask_copy - copy skb bits to the destanation cmd task
- * @conn: iscsi tcp connection
- * @ctask: scsi command task
- * @buf: buffer to copy to
- * @buf_size: size of buffer
- * @offset: offset within the buffer
- *
- * Notes:
- *      The function calls skb_copy_bits() and updates per-connection and
- *      per-cmd byte counters.
- *
- *      Read counters (in bytes):
- *
- *      conn->in.offset         offset within in progress SKB
- *      conn->in.copy           left to copy from in progress SKB
- *                              including padding
- *      conn->in.copied         copied already from in progress SKB
- *      conn->data_copied       copied already from in progress buffer
- *      ctask->sent             total bytes sent up to the MidLayer
- *      ctask->data_count       left to copy from in progress Data-In
- *      buf_left                left to copy from in progress buffer
- **/
-static inline int
-iscsi_ctask_copy(struct iscsi_tcp_conn *tcp_conn, struct iscsi_cmd_task *ctask,
-                void *buf, int buf_size, int offset)
-{
-        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
-        int buf_left = buf_size - (tcp_conn->data_copied + offset);
-        unsigned size = min(tcp_conn->in.copy, buf_left);
-        int rc;
-
-        size = min(size, ctask->data_count);
-
-        debug_tcp("ctask_copy %d bytes at offset %d copied %d\n",
-               size, tcp_conn->in.offset, tcp_conn->in.copied);
-
-        BUG_ON(size <= 0);
-        BUG_ON(tcp_ctask->sent + size > scsi_bufflen(ctask->sc));
-
-        rc = skb_copy_bits(tcp_conn->in.skb, tcp_conn->in.offset,
-                           (char*)buf + (offset + tcp_conn->data_copied), size);
-        /* must fit into skb->len */
-        BUG_ON(rc);
-
-        tcp_conn->in.offset += size;
-        tcp_conn->in.copy -= size;
-        tcp_conn->in.copied += size;
-        tcp_conn->data_copied += size;
-        tcp_ctask->sent += size;
-        ctask->data_count -= size;
-
-        BUG_ON(tcp_conn->in.copy < 0);
-        BUG_ON(ctask->data_count < 0);
-
-        if (buf_size != (tcp_conn->data_copied + offset)) {
-                if (!ctask->data_count) {
-                        BUG_ON(buf_size - tcp_conn->data_copied < 0);
-                        /* done with this PDU */
-                        return buf_size - tcp_conn->data_copied;
-                }
-                return -EAGAIN;
+        if (rc == 0) {
+                /* Anything that comes with data should have
+                 * been handled above. */
+                if (tcp_conn->in.datalen)
+                        return ISCSI_ERR_PROTO;
+                iscsi_tcp_hdr_recv_prep(tcp_conn);
         }
 
-        /* done with this buffer or with both - PDU and buffer */
-        tcp_conn->data_copied = 0;
-        return 0;
+        return rc;
 }
 
 /**
- * iscsi_tcp_copy - copy skb bits to the destanation buffer
- * @conn: iscsi tcp connection
+ * iscsi_tcp_hdr_recv_done - process PDU header
  *
- * Notes:
- *      The function calls skb_copy_bits() and updates per-connection
- *      byte counters.
- **/
-static inline int
-iscsi_tcp_copy(struct iscsi_conn *conn, int buf_size)
-{
-        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-        int buf_left = buf_size - tcp_conn->data_copied;
-        int size = min(tcp_conn->in.copy, buf_left);
-        int rc;
-
-        debug_tcp("tcp_copy %d bytes at offset %d copied %d\n",
-               size, tcp_conn->in.offset, tcp_conn->data_copied);
-        BUG_ON(size <= 0);
-
-        rc = skb_copy_bits(tcp_conn->in.skb, tcp_conn->in.offset,
-                           (char*)conn->data + tcp_conn->data_copied, size);
-        BUG_ON(rc);
-
-        tcp_conn->in.offset += size;
-        tcp_conn->in.copy -= size;
-        tcp_conn->in.copied += size;
-        tcp_conn->data_copied += size;
-
-        if (buf_size != tcp_conn->data_copied)
-                return -EAGAIN;
-
-        return 0;
-}
-
-static inline void
-partial_sg_digest_update(struct hash_desc *desc, struct scatterlist *sg,
-                         int offset, int length)
-{
-        struct scatterlist temp;
-
-        sg_init_table(&temp, 1);
-        sg_set_page(&temp, sg_page(sg), length, offset);
-        crypto_hash_update(desc, &temp, length);
-}
-
-static void
-iscsi_recv_digest_update(struct iscsi_tcp_conn *tcp_conn, char* buf, int len)
-{
-        struct scatterlist tmp;
-
-        sg_init_one(&tmp, buf, len);
-        crypto_hash_update(&tcp_conn->rx_hash, &tmp, len);
-}
-
-static int iscsi_scsi_data_in(struct iscsi_conn *conn)
+ * This is the callback invoked when the PDU header has
+ * been received. If the header is followed by additional
+ * header segments, we go back for more data.
+ */
+static int
+iscsi_tcp_hdr_recv_done(struct iscsi_tcp_conn *tcp_conn,
+                        struct iscsi_segment *segment)
 {
-        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-        struct iscsi_cmd_task *ctask = tcp_conn->in.ctask;
-        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
-        struct scsi_cmnd *sc = ctask->sc;
-        struct scatterlist *sg;
-        int i, offset, rc = 0;
-
-        BUG_ON((void*)ctask != sc->SCp.ptr);
-
-        offset = tcp_ctask->data_offset;
-        sg = scsi_sglist(sc);
-
-        if (tcp_ctask->data_offset)
-                for (i = 0; i < tcp_ctask->sg_count; i++)
-                        offset -= sg[i].length;
-        /* we've passed through partial sg*/
-        if (offset < 0)
-                offset = 0;
-
-        for (i = tcp_ctask->sg_count; i < scsi_sg_count(sc); i++) {
-                char *dest;
-
-                dest = kmap_atomic(sg_page(&sg[i]), KM_SOFTIRQ0);
-                rc = iscsi_ctask_copy(tcp_conn, ctask, dest + sg[i].offset,
-                                      sg[i].length, offset);
-                kunmap_atomic(dest, KM_SOFTIRQ0);
-                if (rc == -EAGAIN)
-                        /* continue with the next SKB/PDU */
-                        return rc;
-                if (!rc) {
-                        if (conn->datadgst_en) {
-                                if (!offset)
-                                        crypto_hash_update(
-                                                        &tcp_conn->rx_hash,
-                                                        &sg[i], sg[i].length);
-                                else
-                                        partial_sg_digest_update(
-                                                        &tcp_conn->rx_hash,
-                                                        &sg[i],
-                                                        sg[i].offset + offset,
-                                                        sg[i].length - offset);
-                        }
-                        offset = 0;
-                        tcp_ctask->sg_count++;
-                }
-
-                if (!ctask->data_count) {
-                        if (rc && conn->datadgst_en)
-                                /*
-                                 * data-in is complete, but buffer not...
-                                 */
-                                partial_sg_digest_update(&tcp_conn->rx_hash,
-                                                         &sg[i],
-                                                         sg[i].offset,
-                                                         sg[i].length-rc);
-                        rc = 0;
-                        break;
-                }
-
-                if (!tcp_conn->in.copy)
-                        return -EAGAIN;
-        }
-        BUG_ON(ctask->data_count);
+        struct iscsi_conn *conn = tcp_conn->iscsi_conn;
+        struct iscsi_hdr *hdr;
 
-        /* check for non-exceptional status */
-        if (tcp_conn->in.hdr->flags & ISCSI_FLAG_DATA_STATUS) {
-                debug_scsi("done [sc %lx res %d itt 0x%x flags 0x%x]\n",
-                           (long)sc, sc->result, ctask->itt,
-                           tcp_conn->in.hdr->flags);
-                spin_lock(&conn->session->lock);
-                __iscsi_complete_pdu(conn, tcp_conn->in.hdr, NULL, 0);
-                spin_unlock(&conn->session->lock);
+        /* Check if there are additional header segments
+         * *prior* to computing the digest, because we
+         * may need to go back to the caller for more.
+         */
+        hdr = (struct iscsi_hdr *) tcp_conn->in.hdr_buf;
+        if (segment->copied == sizeof(struct iscsi_hdr) && hdr->hlength) {
+                /* Bump the header length - the caller will
+                 * just loop around and get the AHS for us, and
+                 * call again. */
+                unsigned int ahslen = hdr->hlength << 2;
+
+                /* Make sure we don't overflow */
+                if (sizeof(*hdr) + ahslen > sizeof(tcp_conn->in.hdr_buf))
+                        return ISCSI_ERR_AHSLEN;
+
+                segment->total_size += ahslen;
+                segment->size += ahslen;
+                return 0;
         }
 
-        return rc;
-}
-
-static int
-iscsi_data_recv(struct iscsi_conn *conn)
-{
-        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-        int rc = 0, opcode;
-
-        opcode = tcp_conn->in.hdr->opcode & ISCSI_OPCODE_MASK;
-        switch (opcode) {
-        case ISCSI_OP_SCSI_DATA_IN:
-                rc = iscsi_scsi_data_in(conn);
-                break;
-        case ISCSI_OP_SCSI_CMD_RSP:
-        case ISCSI_OP_TEXT_RSP:
-        case ISCSI_OP_LOGIN_RSP:
-        case ISCSI_OP_ASYNC_EVENT:
-        case ISCSI_OP_REJECT:
-                /*
-                 * Collect data segment to the connection's data
-                 * placeholder
-                 */
-                if (iscsi_tcp_copy(conn, tcp_conn->in.datalen)) {
-                        rc = -EAGAIN;
-                        goto exit;
+        /* We're done processing the header. See if we're doing
+         * header digests; if so, set up the recv_digest buffer
+         * and go back for more. */
+        if (conn->hdrdgst_en) {
+                if (segment->digest_len == 0) {
+                        iscsi_tcp_segment_splice_digest(segment,
+                                                        segment->recv_digest);
+                        return 0;
                 }
+                iscsi_tcp_dgst_header(&tcp_conn->rx_hash, hdr,
+                                      segment->total_copied - ISCSI_DIGEST_SIZE,
+                                      segment->digest);
 
-                rc = iscsi_complete_pdu(conn, tcp_conn->in.hdr, conn->data,
-                                        tcp_conn->in.datalen);
-                if (!rc && conn->datadgst_en && opcode != ISCSI_OP_LOGIN_RSP)
-                        iscsi_recv_digest_update(tcp_conn, conn->data,
-                                                tcp_conn->in.datalen);
-                break;
-        default:
-                BUG_ON(1);
+                if (!iscsi_tcp_dgst_verify(tcp_conn, segment))
+                        return ISCSI_ERR_HDR_DGST;
         }
-exit:
-        return rc;
+
+        tcp_conn->in.hdr = hdr;
+        return iscsi_tcp_hdr_dissect(conn, hdr);
 }
 
 /**
- * iscsi_tcp_data_recv - TCP receive in sendfile fashion
+ * iscsi_tcp_recv - TCP receive in sendfile fashion
  * @rd_desc: read descriptor
  * @skb: socket buffer
  * @offset: offset in skb
  * @len: skb->len - offset
  **/
 static int
-iscsi_tcp_data_recv(read_descriptor_t *rd_desc, struct sk_buff *skb,
-                unsigned int offset, size_t len)
+iscsi_tcp_recv(read_descriptor_t *rd_desc, struct sk_buff *skb,
+               unsigned int offset, size_t len)
 {
-        int rc;
         struct iscsi_conn *conn = rd_desc->arg.data;
         struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-        int processed;
-        char pad[ISCSI_PAD_LEN];
-        struct scatterlist sg;
-
-        /*
-         * Save current SKB and its offset in the corresponding
-         * connection context.
-         */
-        tcp_conn->in.copy = skb->len - offset;
-        tcp_conn->in.offset = offset;
-        tcp_conn->in.skb = skb;
-        tcp_conn->in.len = tcp_conn->in.copy;
-        BUG_ON(tcp_conn->in.copy <= 0);
-        debug_tcp("in %d bytes\n", tcp_conn->in.copy);
+        struct iscsi_segment *segment = &tcp_conn->in.segment;
+        struct skb_seq_state seq;
+        unsigned int consumed = 0;
+        int rc = 0;
 
-more:
-        tcp_conn->in.copied = 0;
-        rc = 0;
+        debug_tcp("in %d bytes\n", skb->len - offset);
 
         if (unlikely(conn->suspend_rx)) {
                 debug_tcp("conn %d Rx suspended!\n", conn->id);
                 return 0;
         }
 
-        if (tcp_conn->in_progress == IN_PROGRESS_WAIT_HEADER ||
-            tcp_conn->in_progress == IN_PROGRESS_HEADER_GATHER) {
-                rc = iscsi_hdr_extract(tcp_conn);
-                if (rc) {
-                       if (rc == -EAGAIN)
-                                goto nomore;
-                       else {
-                                iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
-                                return 0;
-                       }
-                }
+        skb_prepare_seq_read(skb, offset, skb->len, &seq);
+        while (1) {
+                unsigned int avail;
+                const u8 *ptr;
 
-                /*
-                 * Verify and process incoming PDU header.
-                 */
-                rc = iscsi_tcp_hdr_recv(conn);
-                if (!rc && tcp_conn->in.datalen) {
-                        if (conn->datadgst_en)
-                                crypto_hash_init(&tcp_conn->rx_hash);
-                        tcp_conn->in_progress = IN_PROGRESS_DATA_RECV;
-                } else if (rc) {
-                        iscsi_conn_failure(conn, rc);
-                        return 0;
+                avail = skb_seq_read(consumed, &ptr, &seq);
+                if (avail == 0) {
+                        debug_tcp("no more data avail. Consumed %d\n",
+                                  consumed);
+                        break;
                 }
-        }
-
-        if (tcp_conn->in_progress == IN_PROGRESS_DDIGEST_RECV &&
-            tcp_conn->in.copy) {
-                uint32_t recv_digest;
-
-                debug_tcp("extra data_recv offset %d copy %d\n",
-                          tcp_conn->in.offset, tcp_conn->in.copy);
-
-                if (!tcp_conn->data_copied) {
-                        if (tcp_conn->in.padding) {
-                                debug_tcp("padding -> %d\n",
-                                          tcp_conn->in.padding);
-                                memset(pad, 0, tcp_conn->in.padding);
-                                sg_init_one(&sg, pad, tcp_conn->in.padding);
-                                crypto_hash_update(&tcp_conn->rx_hash,
-                                                   &sg, sg.length);
+                BUG_ON(segment->copied >= segment->size);
+
+                debug_tcp("skb %p ptr=%p avail=%u\n", skb, ptr, avail);
+                rc = iscsi_tcp_segment_recv(tcp_conn, segment, ptr, avail);
+                BUG_ON(rc == 0);
+                consumed += rc;
+
+                if (segment->total_copied >= segment->total_size) {
+                        debug_tcp("segment done\n");
+                        rc = segment->done(tcp_conn, segment);
+                        if (rc != 0) {
+                                skb_abort_seq_read(&seq);
+                                goto error;
                         }
-                        crypto_hash_final(&tcp_conn->rx_hash,
-                                          (u8 *) &tcp_conn->in.datadgst);
-                        debug_tcp("rx digest 0x%x\n", tcp_conn->in.datadgst);
-                }
 
-                rc = iscsi_tcp_copy(conn, sizeof(uint32_t));
-                if (rc) {
-                        if (rc == -EAGAIN)
-                                goto again;
-                        iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
-                        return 0;
-                }
-
-                memcpy(&recv_digest, conn->data, sizeof(uint32_t));
-                if (recv_digest != tcp_conn->in.datadgst) {
-                        debug_tcp("iscsi_tcp: data digest error!"
-                                  "0x%x != 0x%x\n", recv_digest,
-                                  tcp_conn->in.datadgst);
-                        iscsi_conn_failure(conn, ISCSI_ERR_DATA_DGST);
-                        return 0;
-                } else {
-                        debug_tcp("iscsi_tcp: data digest match!"
-                                  "0x%x == 0x%x\n", recv_digest,
-                                  tcp_conn->in.datadgst);
-                        tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER;
+                        /* The done() functions sets up the
+                         * next segment. */
                 }
         }
+        skb_abort_seq_read(&seq);
+        conn->rxdata_octets += consumed;
+        return consumed;
 
-        if (tcp_conn->in_progress == IN_PROGRESS_DATA_RECV &&
-            tcp_conn->in.copy) {
-                debug_tcp("data_recv offset %d copy %d\n",
-                       tcp_conn->in.offset, tcp_conn->in.copy);
-
-                rc = iscsi_data_recv(conn);
-                if (rc) {
-                        if (rc == -EAGAIN)
-                                goto again;
-                        iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
-                        return 0;
-                }
-
-                if (tcp_conn->in.padding)
-                        tcp_conn->in_progress = IN_PROGRESS_PAD_RECV;
-                else if (conn->datadgst_en)
-                        tcp_conn->in_progress = IN_PROGRESS_DDIGEST_RECV;
-                else
-                        tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER;
-                tcp_conn->data_copied = 0;
-        }
-
-        if (tcp_conn->in_progress == IN_PROGRESS_PAD_RECV &&
-            tcp_conn->in.copy) {
-                int copylen = min(tcp_conn->in.padding - tcp_conn->data_copied,
-                                  tcp_conn->in.copy);
-
-                tcp_conn->in.copy -= copylen;
-                tcp_conn->in.offset += copylen;
-                tcp_conn->data_copied += copylen;
-
-                if (tcp_conn->data_copied != tcp_conn->in.padding)
-                        tcp_conn->in_progress = IN_PROGRESS_PAD_RECV;
-                else if (conn->datadgst_en)
-                        tcp_conn->in_progress = IN_PROGRESS_DDIGEST_RECV;
-                else
-                        tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER;
-                tcp_conn->data_copied = 0;
-        }
-
-        debug_tcp("f, processed %d from out of %d padding %d\n",
-               tcp_conn->in.offset - offset, (int)len, tcp_conn->in.padding);
-        BUG_ON(tcp_conn->in.offset - offset > len);
-
-        if (tcp_conn->in.offset - offset != len) {
-                debug_tcp("continue to process %d bytes\n",
-                       (int)len - (tcp_conn->in.offset - offset));
-                goto more;
-        }
-
-nomore:
-        processed = tcp_conn->in.offset - offset;
-        BUG_ON(processed == 0);
-        return processed;
-
-again:
-        processed = tcp_conn->in.offset - offset;
-        debug_tcp("c, processed %d from out of %d rd_desc_cnt %d\n",
-                  processed, (int)len, (int)rd_desc->count);
-        BUG_ON(processed == 0);
-        BUG_ON(processed > len);
-
-        conn->rxdata_octets += processed;
-        return processed;
+error:
+        debug_tcp("Error receiving PDU, errno=%d\n", rc);
+        iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
+        return 0;
 }
 
 static void
 iscsi_tcp_data_ready(struct sock *sk, int flag)
 {
         struct iscsi_conn *conn = sk->sk_user_data;
+        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
         read_descriptor_t rd_desc;
 
         read_lock(&sk->sk_callback_lock);
 
         /*
-         * Use rd_desc to pass 'conn' to iscsi_tcp_data_recv.
+         * Use rd_desc to pass 'conn' to iscsi_tcp_recv.
          * We set count to 1 because we want the network layer to
-         * hand us all the skbs that are available. iscsi_tcp_data_recv
+         * hand us all the skbs that are available. iscsi_tcp_recv
          * handled pdus that cross buffers or pdus that still need data.
          */
         rd_desc.arg.data = conn;
         rd_desc.count = 1;
-        tcp_read_sock(sk, &rd_desc, iscsi_tcp_data_recv);
+        tcp_read_sock(sk, &rd_desc, iscsi_tcp_recv);
 
         read_unlock(&sk->sk_callback_lock);
+
+        /* If we had to (atomically) map a highmem page,
+         * unmap it now. */
+        iscsi_tcp_segment_unmap(&tcp_conn->in.segment);
 }
 
 static void
@@ -1077,121 +1079,173 @@ iscsi_conn_restore_callbacks(struct iscsi_tcp_conn *tcp_conn)
 }
 
 /**
- * iscsi_send - generic send routine
- * @sk: kernel's socket
- * @buf: buffer to write from
- * @size: actual size to write
- * @flags: socket's flags
- */
-static inline int
-iscsi_send(struct iscsi_conn *conn, struct iscsi_buf *buf, int size, int flags)
+ * iscsi_xmit - TCP transmit
+ **/
+static int
+iscsi_xmit(struct iscsi_conn *conn)
 {
         struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-        struct socket *sk = tcp_conn->sock;
-        int offset = buf->sg.offset + buf->sent, res;
+        struct iscsi_segment *segment = &tcp_conn->out.segment;
+        unsigned int consumed = 0;
+        int rc = 0;
 
-        /*
-         * if we got use_sg=0 or are sending something we kmallocd
-         * then we did not have to do kmap (kmap returns page_address)
-         *
-         * if we got use_sg > 0, but had to drop down, we do not
-         * set clustering so this should only happen for that
-         * slab case.
-         */
-        if (buf->use_sendmsg)
-                res = sock_no_sendpage(sk, sg_page(&buf->sg), offset, size, flags);
-        else
-                res = tcp_conn->sendpage(sk, sg_page(&buf->sg), offset, size, flags);
-
-        if (res >= 0) {
-                conn->txdata_octets += res;
-                buf->sent += res;
-                return res;
+        while (1) {
+                rc = iscsi_tcp_xmit_segment(tcp_conn, segment);
+                if (rc < 0)
+                        goto error;
+                if (rc == 0)
+                        break;
+
+                consumed += rc;
+
+                if (segment->total_copied >= segment->total_size) {
+                        if (segment->done != NULL) {
+                                rc = segment->done(tcp_conn, segment);
+                                if (rc < 0)
+                                        goto error;
+                        }
+                }
         }
 
-        tcp_conn->sendpage_failures_cnt++;
-        if (res == -EAGAIN)
-                res = -ENOBUFS;
-        else
-                iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
-        return res;
+        debug_tcp("xmit %d bytes\n", consumed);
+
+        conn->txdata_octets += consumed;
+        return consumed;
+
+error:
+        /* Transmit error. We could initiate error recovery
+         * here. */
+        debug_tcp("Error sending PDU, errno=%d\n", rc);
+        iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
+        return rc;
 }
 
 /**
- * iscsi_sendhdr - send PDU Header via tcp_sendpage()
- * @conn: iscsi connection
- * @buf: buffer to write from
- * @datalen: lenght of data to be sent after the header
- *
- * Notes:
- *      (Tx, Fast Path)
- **/
+ * iscsi_tcp_xmit_qlen - return the number of bytes queued for xmit
+ */
 static inline int
-iscsi_sendhdr(struct iscsi_conn *conn, struct iscsi_buf *buf, int datalen)
+iscsi_tcp_xmit_qlen(struct iscsi_conn *conn)
 {
-        int flags = 0; /* MSG_DONTWAIT; */
-        int res, size;
-
-        size = buf->sg.length - buf->sent;
-        BUG_ON(buf->sent + size > buf->sg.length);
-        if (buf->sent + size != buf->sg.length || datalen)
-                flags |= MSG_MORE;
-
-        res = iscsi_send(conn, buf, size, flags);
-        debug_tcp("sendhdr %d bytes, sent %d res %d\n", size, buf->sent, res);
-        if (res >= 0) {
-                if (size != res)
-                        return -EAGAIN;
-                return 0;
-        }
+        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
+        struct iscsi_segment *segment = &tcp_conn->out.segment;
 
-        return res;
+        return segment->total_copied - segment->total_size;
 }
 
-/**
- * iscsi_sendpage - send one page of iSCSI Data-Out.
- * @conn: iscsi connection
- * @buf: buffer to write from
- * @count: remaining data
- * @sent: number of bytes sent
- *
- * Notes:
- *      (Tx, Fast Path)
- **/
 static inline int
-iscsi_sendpage(struct iscsi_conn *conn, struct iscsi_buf *buf,
-               int *count, int *sent)
+iscsi_tcp_flush(struct iscsi_conn *conn)
 {
-        int flags = 0; /* MSG_DONTWAIT; */
-        int res, size;
-
-        size = buf->sg.length - buf->sent;
-        BUG_ON(buf->sent + size > buf->sg.length);
-        if (size > *count)
-                size = *count;
-        if (buf->sent + size != buf->sg.length || *count != size)
-                flags |= MSG_MORE;
-
-        res = iscsi_send(conn, buf, size, flags);
-        debug_tcp("sendpage: %d bytes, sent %d left %d sent %d res %d\n",
-                  size, buf->sent, *count, *sent, res);
-        if (res >= 0) {
-                *count -= res;
-                *sent += res;
-                if (size != res)
+        int rc;
+
+        while (iscsi_tcp_xmit_qlen(conn)) {
+                rc = iscsi_xmit(conn);
+                if (rc == 0)
                         return -EAGAIN;
-                return 0;
+                if (rc < 0)
+                        return rc;
         }
 
-        return res;
+        return 0;
 }
 
-static inline void
-iscsi_data_digest_init(struct iscsi_tcp_conn *tcp_conn,
-                      struct iscsi_tcp_cmd_task *tcp_ctask)
+/*
+ * This is called when we're done sending the header.
+ * Simply copy the data_segment to the send segment, and return.
+ */
+static int
+iscsi_tcp_send_hdr_done(struct iscsi_tcp_conn *tcp_conn,
+                        struct iscsi_segment *segment)
+{
+        tcp_conn->out.segment = tcp_conn->out.data_segment;
+        debug_tcp("Header done. Next segment size %u total_size %u\n",
+                  tcp_conn->out.segment.size, tcp_conn->out.segment.total_size);
+        return 0;
+}
+
+static void
+iscsi_tcp_send_hdr_prep(struct iscsi_conn *conn, void *hdr, size_t hdrlen)
 {
-        crypto_hash_init(&tcp_conn->tx_hash);
-        tcp_ctask->digest_count = 4;
+        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
+
+        debug_tcp("%s(%p%s)\n", __FUNCTION__, tcp_conn,
+                        conn->hdrdgst_en? ", digest enabled" : "");
+
+        /* Clear the data segment - needs to be filled in by the
+         * caller using iscsi_tcp_send_data_prep() */
+        memset(&tcp_conn->out.data_segment, 0, sizeof(struct iscsi_segment));
+
+        /* If header digest is enabled, compute the CRC and
+         * place the digest into the same buffer. We make
+         * sure that both iscsi_tcp_ctask and mtask have
+         * sufficient room.
+         */
+        if (conn->hdrdgst_en) {
+                iscsi_tcp_dgst_header(&tcp_conn->tx_hash, hdr, hdrlen,
+                                      hdr + hdrlen);
+                hdrlen += ISCSI_DIGEST_SIZE;
+        }
+
+        /* Remember header pointer for later, when we need
+         * to decide whether there's a payload to go along
+         * with the header. */
+        tcp_conn->out.hdr = hdr;
+
+        iscsi_segment_init_linear(&tcp_conn->out.segment, hdr, hdrlen,
+                                iscsi_tcp_send_hdr_done, NULL);
+}
+
+/*
+ * Prepare the send buffer for the payload data.
+ * Padding and checksumming will all be taken care
+ * of by the iscsi_segment routines.
+ */
+static int
+iscsi_tcp_send_data_prep(struct iscsi_conn *conn, struct scatterlist *sg,
+                         unsigned int count, unsigned int offset,
+                         unsigned int len)
+{
+        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
+        struct hash_desc *tx_hash = NULL;
+        unsigned int hdr_spec_len;
+
+        debug_tcp("%s(%p, offset=%d, datalen=%d%s)\n", __FUNCTION__,
+                        tcp_conn, offset, len,
+                        conn->datadgst_en? ", digest enabled" : "");
+
+        /* Make sure the datalen matches what the caller
+           said he would send. */
+        hdr_spec_len = ntoh24(tcp_conn->out.hdr->dlength);
+        WARN_ON(iscsi_padded(len) != iscsi_padded(hdr_spec_len));
+
+        if (conn->datadgst_en)
+                tx_hash = &tcp_conn->tx_hash;
+
+        return iscsi_segment_seek_sg(&tcp_conn->out.data_segment,
+                                   sg, count, offset, len,
+                                   NULL, tx_hash);
+}
+
+static void
+iscsi_tcp_send_linear_data_prepare(struct iscsi_conn *conn, void *data,
+                                   size_t len)
+{
+        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
+        struct hash_desc *tx_hash = NULL;
+        unsigned int hdr_spec_len;
+
+        debug_tcp("%s(%p, datalen=%d%s)\n", __FUNCTION__, tcp_conn, len,
+                  conn->datadgst_en? ", digest enabled" : "");
+
+        /* Make sure the datalen matches what the caller
+           said he would send. */
+        hdr_spec_len = ntoh24(tcp_conn->out.hdr->dlength);
+        WARN_ON(iscsi_padded(len) != iscsi_padded(hdr_spec_len));
+
+        if (conn->datadgst_en)
+                tx_hash = &tcp_conn->tx_hash;
+
+        iscsi_segment_init_linear(&tcp_conn->out.data_segment,
+                                data, len, NULL, tx_hash);
 }
 
 /**
@@ -1207,12 +1261,17 @@ iscsi_data_digest_init(struct iscsi_tcp_conn *tcp_conn,
  *
  *      Called under connection lock.
  **/
-static void
+static int
 iscsi_solicit_data_cont(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
-                        struct iscsi_r2t_info *r2t, int left)
+                        struct iscsi_r2t_info *r2t)
 {
         struct iscsi_data *hdr;
-        int new_offset;
+        int new_offset, left;
+
+        BUG_ON(r2t->data_length - r2t->sent < 0);
+        left = r2t->data_length - r2t->sent;
+        if (left == 0)
+                return 0;
 
         hdr = &r2t->dtask.hdr;
         memset(hdr, 0, sizeof(struct iscsi_data));
@@ -1233,43 +1292,46 @@ iscsi_solicit_data_cont(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
                 r2t->data_count = left;
                 hdr->flags = ISCSI_FLAG_CMD_FINAL;
         }
-        conn->dataout_pdus_cnt++;
-
-        iscsi_buf_init_iov(&r2t->headbuf, (char*)hdr,
-                           sizeof(struct iscsi_hdr));
-
-        if (iscsi_buf_left(&r2t->sendbuf))
-                return;
-
-        iscsi_buf_init_sg(&r2t->sendbuf, r2t->sg);
-        r2t->sg += 1;
-}
 
-static void iscsi_set_padding(struct iscsi_tcp_cmd_task *tcp_ctask,
-                              unsigned long len)
-{
-        tcp_ctask->pad_count = len & (ISCSI_PAD_LEN - 1);
-        if (!tcp_ctask->pad_count)
-                return;
-
-        tcp_ctask->pad_count = ISCSI_PAD_LEN - tcp_ctask->pad_count;
-        debug_scsi("write padding %d bytes\n", tcp_ctask->pad_count);
-        set_bit(XMSTATE_BIT_W_PAD, &tcp_ctask->xmstate);
+        conn->dataout_pdus_cnt++;
+        return 1;
 }
 
 /**
- * iscsi_tcp_cmd_init - Initialize iSCSI SCSI_READ or SCSI_WRITE commands
+ * iscsi_tcp_ctask - Initialize iSCSI SCSI_READ or SCSI_WRITE commands
  * @conn: iscsi connection
  * @ctask: scsi command task
  * @sc: scsi command
  **/
-static void
-iscsi_tcp_cmd_init(struct iscsi_cmd_task *ctask)
+static int
+iscsi_tcp_ctask_init(struct iscsi_cmd_task *ctask)
 {
         struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
+        struct iscsi_conn *conn = ctask->conn;
+        struct scsi_cmnd *sc = ctask->sc;
+        int err;
 
         BUG_ON(__kfifo_len(tcp_ctask->r2tqueue));
-        tcp_ctask->xmstate = 1 << XMSTATE_BIT_CMD_HDR_INIT;
+        tcp_ctask->sent = 0;
+        tcp_ctask->exp_datasn = 0;
+
+        /* Prepare PDU, optionally w/ immediate data */
+        debug_scsi("ctask deq [cid %d itt 0x%x imm %d unsol %d]\n",
+                    conn->id, ctask->itt, ctask->imm_count,
+                    ctask->unsol_count);
+        iscsi_tcp_send_hdr_prep(conn, ctask->hdr, ctask->hdr_len);
+
+        if (!ctask->imm_count)
+                return 0;
+
+        /* If we have immediate data, attach a payload */
+        err = iscsi_tcp_send_data_prep(conn, scsi_sglist(sc), scsi_sg_count(sc),
+                                       0, ctask->imm_count);
+        if (err)
+                return err;
+        tcp_ctask->sent += ctask->imm_count;
+        ctask->imm_count = 0;
+        return 0;
 }
 
 /**
@@ -1281,484 +1343,130 @@ iscsi_tcp_cmd_init(struct iscsi_cmd_task *ctask)
  *      The function can return -EAGAIN in which case caller must
  *      call it again later, or recover. '0' return code means successful
  *      xmit.
- *
- *      Management xmit state machine consists of these states:
- *              XMSTATE_BIT_IMM_HDR_INIT - calculate digest of PDU Header
- *              XMSTATE_BIT_IMM_HDR      - PDU Header xmit in progress
- *              XMSTATE_BIT_IMM_DATA     - PDU Data xmit in progress
- *              XMSTATE_VALUE_IDLE       - management PDU is done
  **/
 static int
 iscsi_tcp_mtask_xmit(struct iscsi_conn *conn, struct iscsi_mgmt_task *mtask)
 {
-        struct iscsi_tcp_mgmt_task *tcp_mtask = mtask->dd_data;
         int rc;
 
-        debug_scsi("mtask deq [cid %d state %x itt 0x%x]\n",
-                conn->id, tcp_mtask->xmstate, mtask->itt);
-
-        if (test_bit(XMSTATE_BIT_IMM_HDR_INIT, &tcp_mtask->xmstate)) {
-                iscsi_buf_init_iov(&tcp_mtask->headbuf, (char*)mtask->hdr,
-                                   sizeof(struct iscsi_hdr));
-
-                if (mtask->data_count) {
-                        set_bit(XMSTATE_BIT_IMM_DATA, &tcp_mtask->xmstate);
-                        iscsi_buf_init_iov(&tcp_mtask->sendbuf,
-                                           (char*)mtask->data,
-                                           mtask->data_count);
-                }
-
-                if (conn->c_stage != ISCSI_CONN_INITIAL_STAGE &&
-                    conn->stop_stage != STOP_CONN_RECOVER &&
-                    conn->hdrdgst_en)
-                        iscsi_hdr_digest(conn, &tcp_mtask->headbuf,
-                                        (u8*)tcp_mtask->hdrext);
-
-                tcp_mtask->sent = 0;
-                clear_bit(XMSTATE_BIT_IMM_HDR_INIT, &tcp_mtask->xmstate);
-                set_bit(XMSTATE_BIT_IMM_HDR, &tcp_mtask->xmstate);
-        }
-
-        if (test_bit(XMSTATE_BIT_IMM_HDR, &tcp_mtask->xmstate)) {
-                rc = iscsi_sendhdr(conn, &tcp_mtask->headbuf,
-                                   mtask->data_count);
-                if (rc)
-                        return rc;
-                clear_bit(XMSTATE_BIT_IMM_HDR, &tcp_mtask->xmstate);
-        }
-
-        if (test_and_clear_bit(XMSTATE_BIT_IMM_DATA, &tcp_mtask->xmstate)) {
-                BUG_ON(!mtask->data_count);
-                /* FIXME: implement.
-                 * Virtual buffer could be spreaded across multiple pages...
-                 */
-                do {
-                        int rc;
-
-                        rc = iscsi_sendpage(conn, &tcp_mtask->sendbuf,
-                                        &mtask->data_count, &tcp_mtask->sent);
-                        if (rc) {
-                                set_bit(XMSTATE_BIT_IMM_DATA, &tcp_mtask->xmstate);
-                                return rc;
-                        }
-                } while (mtask->data_count);
-        }
+        /* Flush any pending data first. */
+        rc = iscsi_tcp_flush(conn);
+        if (rc < 0)
+                return rc;
 
-        BUG_ON(tcp_mtask->xmstate != XMSTATE_VALUE_IDLE);
         if (mtask->hdr->itt == RESERVED_ITT) {
                 struct iscsi_session *session = conn->session;
 
                 spin_lock_bh(&session->lock);
-                list_del(&conn->mtask->running);
-                __kfifo_put(session->mgmtpool.queue, (void*)&conn->mtask,
-                            sizeof(void*));
+                iscsi_free_mgmt_task(conn, mtask);
                 spin_unlock_bh(&session->lock);
         }
+
         return 0;
 }
 
+/*
+ * iscsi_tcp_ctask_xmit - xmit normal PDU task
+ * @conn: iscsi connection
+ * @ctask: iscsi command task
+ *
+ * We're expected to return 0 when everything was transmitted succesfully,
+ * -EAGAIN if there's still data in the queue, or != 0 for any other kind
+ * of error.
+ */
 static int
-iscsi_send_cmd_hdr(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
+iscsi_tcp_ctask_xmit(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
 {
-        struct scsi_cmnd *sc = ctask->sc;
         struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
+        struct scsi_cmnd *sc = ctask->sc;
         int rc = 0;
 
-        if (test_bit(XMSTATE_BIT_CMD_HDR_INIT, &tcp_ctask->xmstate)) {
-                tcp_ctask->sent = 0;
-                tcp_ctask->sg_count = 0;
-                tcp_ctask->exp_datasn = 0;
-
-                if (sc->sc_data_direction == DMA_TO_DEVICE) {
-                        struct scatterlist *sg = scsi_sglist(sc);
-
-                        iscsi_buf_init_sg(&tcp_ctask->sendbuf, sg);
-                        tcp_ctask->sg = sg + 1;
-                        tcp_ctask->bad_sg = sg + scsi_sg_count(sc);
-
-                        debug_scsi("cmd [itt 0x%x total %d imm_data %d "
-                                   "unsol count %d, unsol offset %d]\n",
-                                   ctask->itt, scsi_bufflen(sc),
-                                   ctask->imm_count, ctask->unsol_count,
-                                   ctask->unsol_offset);
-                }
-
-                iscsi_buf_init_iov(&tcp_ctask->headbuf, (char*)ctask->hdr,
-                                  sizeof(struct iscsi_hdr));
-
-                if (conn->hdrdgst_en)
-                        iscsi_hdr_digest(conn, &tcp_ctask->headbuf,
-                                         (u8*)tcp_ctask->hdrext);
-                clear_bit(XMSTATE_BIT_CMD_HDR_INIT, &tcp_ctask->xmstate);
-                set_bit(XMSTATE_BIT_CMD_HDR_XMIT, &tcp_ctask->xmstate);
-        }
-
-        if (test_bit(XMSTATE_BIT_CMD_HDR_XMIT, &tcp_ctask->xmstate)) {
-                rc = iscsi_sendhdr(conn, &tcp_ctask->headbuf, ctask->imm_count);
-                if (rc)
-                        return rc;
-                clear_bit(XMSTATE_BIT_CMD_HDR_XMIT, &tcp_ctask->xmstate);
-
-                if (sc->sc_data_direction != DMA_TO_DEVICE)
-                        return 0;
-
-                if (ctask->imm_count) {
-                        set_bit(XMSTATE_BIT_IMM_DATA, &tcp_ctask->xmstate);
-                        iscsi_set_padding(tcp_ctask, ctask->imm_count);
-
-                        if (ctask->conn->datadgst_en) {
-                                iscsi_data_digest_init(ctask->conn->dd_data,
-                                                       tcp_ctask);
-                                tcp_ctask->immdigest = 0;
-                        }
-                }
-
-                if (ctask->unsol_count) {
-                        set_bit(XMSTATE_BIT_UNS_HDR, &tcp_ctask->xmstate);
-                        set_bit(XMSTATE_BIT_UNS_INIT, &tcp_ctask->xmstate);
-                }
-        }
-        return rc;
-}
-
-static int
-iscsi_send_padding(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
-{
-        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
-        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-        int sent = 0, rc;
-
-        if (test_bit(XMSTATE_BIT_W_PAD, &tcp_ctask->xmstate)) {
-                iscsi_buf_init_iov(&tcp_ctask->sendbuf, (char*)&tcp_ctask->pad,
-                                   tcp_ctask->pad_count);
-                if (conn->datadgst_en)
-                        crypto_hash_update(&tcp_conn->tx_hash,
-                                           &tcp_ctask->sendbuf.sg,
-                                           tcp_ctask->sendbuf.sg.length);
-        } else if (!test_bit(XMSTATE_BIT_W_RESEND_PAD, &tcp_ctask->xmstate))
-                return 0;
-
-        clear_bit(XMSTATE_BIT_W_PAD, &tcp_ctask->xmstate);
-        clear_bit(XMSTATE_BIT_W_RESEND_PAD, &tcp_ctask->xmstate);
-        debug_scsi("sending %d pad bytes for itt 0x%x\n",
-                   tcp_ctask->pad_count, ctask->itt);
-        rc = iscsi_sendpage(conn, &tcp_ctask->sendbuf, &tcp_ctask->pad_count,
-                           &sent);
-        if (rc) {
-                debug_scsi("padding send failed %d\n", rc);
-                set_bit(XMSTATE_BIT_W_RESEND_PAD, &tcp_ctask->xmstate);
-        }
-        return rc;
-}
-
-static int
-iscsi_send_digest(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
-                        struct iscsi_buf *buf, uint32_t *digest)
-{
-        struct iscsi_tcp_cmd_task *tcp_ctask;
-        struct iscsi_tcp_conn *tcp_conn;
-        int rc, sent = 0;
-
-        if (!conn->datadgst_en)
-                return 0;
-
-        tcp_ctask = ctask->dd_data;
-        tcp_conn = conn->dd_data;
-
-        if (!test_bit(XMSTATE_BIT_W_RESEND_DATA_DIGEST, &tcp_ctask->xmstate)) {
-                crypto_hash_final(&tcp_conn->tx_hash, (u8*)digest);
-                iscsi_buf_init_iov(buf, (char*)digest, 4);
-        }
-        clear_bit(XMSTATE_BIT_W_RESEND_DATA_DIGEST, &tcp_ctask->xmstate);
-
-        rc = iscsi_sendpage(conn, buf, &tcp_ctask->digest_count, &sent);
-        if (!rc)
-                debug_scsi("sent digest 0x%x for itt 0x%x\n", *digest,
-                          ctask->itt);
-        else {
-                debug_scsi("sending digest 0x%x failed for itt 0x%x!\n",
-                          *digest, ctask->itt);
-                set_bit(XMSTATE_BIT_W_RESEND_DATA_DIGEST, &tcp_ctask->xmstate);
-        }
-        return rc;
-}
-
-static int
-iscsi_send_data(struct iscsi_cmd_task *ctask, struct iscsi_buf *sendbuf,
-                struct scatterlist **sg, int *sent, int *count,
-                struct iscsi_buf *digestbuf, uint32_t *digest)
-{
-        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
-        struct iscsi_conn *conn = ctask->conn;
-        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-        int rc, buf_sent, offset;
-
-        while (*count) {
-                buf_sent = 0;
-                offset = sendbuf->sent;
-
-                rc = iscsi_sendpage(conn, sendbuf, count, &buf_sent);
-                *sent = *sent + buf_sent;
-                if (buf_sent && conn->datadgst_en)
-                        partial_sg_digest_update(&tcp_conn->tx_hash,
-                                &sendbuf->sg, sendbuf->sg.offset + offset,
-                                buf_sent);
-                if (!iscsi_buf_left(sendbuf) && *sg != tcp_ctask->bad_sg) {
-                        iscsi_buf_init_sg(sendbuf, *sg);
-                        *sg = *sg + 1;
-                }
-
-                if (rc)
-                        return rc;
-        }
-
-        rc = iscsi_send_padding(conn, ctask);
-        if (rc)
+flush:
+        /* Flush any pending data first. */
+        rc = iscsi_tcp_flush(conn);
+        if (rc < 0)
                 return rc;
 
-        return iscsi_send_digest(conn, ctask, digestbuf, digest);
-}
-
-static int
-iscsi_send_unsol_hdr(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
-{
-        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
-        struct iscsi_data_task *dtask;
-        int rc;
-
-        set_bit(XMSTATE_BIT_UNS_DATA, &tcp_ctask->xmstate);
-        if (test_bit(XMSTATE_BIT_UNS_INIT, &tcp_ctask->xmstate)) {
-                dtask = &tcp_ctask->unsol_dtask;
-
-                iscsi_prep_unsolicit_data_pdu(ctask, &dtask->hdr);
-                iscsi_buf_init_iov(&tcp_ctask->headbuf, (char*)&dtask->hdr,
-                                   sizeof(struct iscsi_hdr));
-                if (conn->hdrdgst_en)
-                        iscsi_hdr_digest(conn, &tcp_ctask->headbuf,
-                                        (u8*)dtask->hdrext);
-
-                clear_bit(XMSTATE_BIT_UNS_INIT, &tcp_ctask->xmstate);
-                iscsi_set_padding(tcp_ctask, ctask->data_count);
-        }
-
-        rc = iscsi_sendhdr(conn, &tcp_ctask->headbuf, ctask->data_count);
-        if (rc) {
-                clear_bit(XMSTATE_BIT_UNS_DATA, &tcp_ctask->xmstate);
-                set_bit(XMSTATE_BIT_UNS_HDR, &tcp_ctask->xmstate);
-                return rc;
-        }
+        /* Are we done already? */
+        if (sc->sc_data_direction != DMA_TO_DEVICE)
+                return 0;
 
-        if (conn->datadgst_en) {
-                dtask = &tcp_ctask->unsol_dtask;
-                iscsi_data_digest_init(ctask->conn->dd_data, tcp_ctask);
-                dtask->digest = 0;
-        }
+        if (ctask->unsol_count != 0) {
+                struct iscsi_data *hdr = &tcp_ctask->unsol_dtask.hdr;
 
-        debug_scsi("uns dout [itt 0x%x dlen %d sent %d]\n",
-                   ctask->itt, ctask->unsol_count, tcp_ctask->sent);
-        return 0;
-}
+                /* Prepare a header for the unsolicited PDU.
+                 * The amount of data we want to send will be
+                 * in ctask->data_count.
+                 * FIXME: return the data count instead.
+                 */
+                iscsi_prep_unsolicit_data_pdu(ctask, hdr);
 
-static int
-iscsi_send_unsol_pdu(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
-{
-        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
-        int rc;
+                debug_tcp("unsol dout [itt 0x%x doff %d dlen %d]\n",
+                                ctask->itt, tcp_ctask->sent, ctask->data_count);
 
-        if (test_and_clear_bit(XMSTATE_BIT_UNS_HDR, &tcp_ctask->xmstate)) {
-                BUG_ON(!ctask->unsol_count);
-send_hdr:
-                rc = iscsi_send_unsol_hdr(conn, ctask);
+                iscsi_tcp_send_hdr_prep(conn, hdr, sizeof(*hdr));
+                rc = iscsi_tcp_send_data_prep(conn, scsi_sglist(sc),
+                                              scsi_sg_count(sc),
+                                              tcp_ctask->sent,
+                                              ctask->data_count);
                 if (rc)
-                        return rc;
-        }
-
-        if (test_bit(XMSTATE_BIT_UNS_DATA, &tcp_ctask->xmstate)) {
-                struct iscsi_data_task *dtask = &tcp_ctask->unsol_dtask;
-                int start = tcp_ctask->sent;
+                        goto fail;
+                tcp_ctask->sent += ctask->data_count;
+                ctask->unsol_count -= ctask->data_count;
+                goto flush;
+        } else {
+                struct iscsi_session *session = conn->session;
+                struct iscsi_r2t_info *r2t;
 
-                rc = iscsi_send_data(ctask, &tcp_ctask->sendbuf, &tcp_ctask->sg,
-                                     &tcp_ctask->sent, &ctask->data_count,
-                                     &dtask->digestbuf, &dtask->digest);
-                ctask->unsol_count -= tcp_ctask->sent - start;
-                if (rc)
-                        return rc;
-                clear_bit(XMSTATE_BIT_UNS_DATA, &tcp_ctask->xmstate);
-                /*
-                 * Done with the Data-Out. Next, check if we need
-                 * to send another unsolicited Data-Out.
+                /* All unsolicited PDUs sent. Check for solicited PDUs.
                  */
-                if (ctask->unsol_count) {
-                        debug_scsi("sending more uns\n");
-                        set_bit(XMSTATE_BIT_UNS_INIT, &tcp_ctask->xmstate);
-                        goto send_hdr;
+                spin_lock_bh(&session->lock);
+                r2t = tcp_ctask->r2t;
+                if (r2t != NULL) {
+                        /* Continue with this R2T? */
+                        if (!iscsi_solicit_data_cont(conn, ctask, r2t)) {
+                                debug_scsi("  done with r2t %p\n", r2t);
+
+                                __kfifo_put(tcp_ctask->r2tpool.queue,
+                                            (void*)&r2t, sizeof(void*));
+                                tcp_ctask->r2t = r2t = NULL;
+                        }
                 }
-        }
-        return 0;
-}
-
-static int iscsi_send_sol_pdu(struct iscsi_conn *conn,
-                              struct iscsi_cmd_task *ctask)
-{
-        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
-        struct iscsi_session *session = conn->session;
-        struct iscsi_r2t_info *r2t;
-        struct iscsi_data_task *dtask;
-        int left, rc;
 
-        if (test_bit(XMSTATE_BIT_SOL_HDR_INIT, &tcp_ctask->xmstate)) {
-                if (!tcp_ctask->r2t) {
-                        spin_lock_bh(&session->lock);
+                if (r2t == NULL) {
                         __kfifo_get(tcp_ctask->r2tqueue, (void*)&tcp_ctask->r2t,
                                     sizeof(void*));
-                        spin_unlock_bh(&session->lock);
+                        r2t = tcp_ctask->r2t;
                 }
-send_hdr:
-                r2t = tcp_ctask->r2t;
-                dtask = &r2t->dtask;
-
-                if (conn->hdrdgst_en)
-                        iscsi_hdr_digest(conn, &r2t->headbuf,
-                                        (u8*)dtask->hdrext);
-                clear_bit(XMSTATE_BIT_SOL_HDR_INIT, &tcp_ctask->xmstate);
-                set_bit(XMSTATE_BIT_SOL_HDR, &tcp_ctask->xmstate);
-        }
-
-        if (test_bit(XMSTATE_BIT_SOL_HDR, &tcp_ctask->xmstate)) {
-                r2t = tcp_ctask->r2t;
-                dtask = &r2t->dtask;
-
-                rc = iscsi_sendhdr(conn, &r2t->headbuf, r2t->data_count);
-                if (rc)
-                        return rc;
-                clear_bit(XMSTATE_BIT_SOL_HDR, &tcp_ctask->xmstate);
-                set_bit(XMSTATE_BIT_SOL_DATA, &tcp_ctask->xmstate);
+                spin_unlock_bh(&session->lock);
 
-                if (conn->datadgst_en) {
-                        iscsi_data_digest_init(conn->dd_data, tcp_ctask);
-                        dtask->digest = 0;
+                /* Waiting for more R2Ts to arrive. */
+                if (r2t == NULL) {
+                        debug_tcp("no R2Ts yet\n");
+                        return 0;
                 }
 
-                iscsi_set_padding(tcp_ctask, r2t->data_count);
-                debug_scsi("sol dout [dsn %d itt 0x%x dlen %d sent %d]\n",
-                        r2t->solicit_datasn - 1, ctask->itt, r2t->data_count,
-                        r2t->sent);
-        }
+                debug_scsi("sol dout %p [dsn %d itt 0x%x doff %d dlen %d]\n",
+                        r2t, r2t->solicit_datasn - 1, ctask->itt,
+                        r2t->data_offset + r2t->sent, r2t->data_count);
 
-        if (test_bit(XMSTATE_BIT_SOL_DATA, &tcp_ctask->xmstate)) {
-                r2t = tcp_ctask->r2t;
-                dtask = &r2t->dtask;
+                iscsi_tcp_send_hdr_prep(conn, &r2t->dtask.hdr,
+                                        sizeof(struct iscsi_hdr));
 
-                rc = iscsi_send_data(ctask, &r2t->sendbuf, &r2t->sg,
-                                     &r2t->sent, &r2t->data_count,
-                                     &dtask->digestbuf, &dtask->digest);
+                rc = iscsi_tcp_send_data_prep(conn, scsi_sglist(sc),
+                                              scsi_sg_count(sc),
+                                              r2t->data_offset + r2t->sent,
+                                              r2t->data_count);
                 if (rc)
-                        return rc;
-                clear_bit(XMSTATE_BIT_SOL_DATA, &tcp_ctask->xmstate);
-
-                /*
-                 * Done with this Data-Out. Next, check if we have
-                 * to send another Data-Out for this R2T.
-                 */
-                BUG_ON(r2t->data_length - r2t->sent < 0);
-                left = r2t->data_length - r2t->sent;
-                if (left) {
-                        iscsi_solicit_data_cont(conn, ctask, r2t, left);
-                        goto send_hdr;
-                }
-
-                /*
-                 * Done with this R2T. Check if there are more
-                 * outstanding R2Ts ready to be processed.
-                 */
-                spin_lock_bh(&session->lock);
-                tcp_ctask->r2t = NULL;
-                __kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
-                            sizeof(void*));
-                if (__kfifo_get(tcp_ctask->r2tqueue, (void*)&r2t,
-                                sizeof(void*))) {
-                        tcp_ctask->r2t = r2t;
-                        spin_unlock_bh(&session->lock);
-                        goto send_hdr;
-                }
-                spin_unlock_bh(&session->lock);
+                        goto fail;
+                tcp_ctask->sent += r2t->data_count;
+                r2t->sent += r2t->data_count;
+                goto flush;
         }
         return 0;
-}
-
-/**
- * iscsi_tcp_ctask_xmit - xmit normal PDU task
- * @conn: iscsi connection
- * @ctask: iscsi command task
- *
- * Notes:
- *      The function can return -EAGAIN in which case caller must
- *      call it again later, or recover. '0' return code means successful
- *      xmit.
- *      The function is devided to logical helpers (above) for the different
- *      xmit stages.
- *
- *iscsi_send_cmd_hdr()
- *      XMSTATE_BIT_CMD_HDR_INIT - prepare Header and Data buffers Calculate
- *                                 Header Digest
- *      XMSTATE_BIT_CMD_HDR_XMIT - Transmit header in progress
- *
- *iscsi_send_padding
- *      XMSTATE_BIT_W_PAD        - Prepare and send pading
- *      XMSTATE_BIT_W_RESEND_PAD - retry send pading
- *
- *iscsi_send_digest
- *      XMSTATE_BIT_W_RESEND_DATA_DIGEST - Finalize and send Data Digest
- *      XMSTATE_BIT_W_RESEND_DATA_DIGEST - retry sending digest
- *
- *iscsi_send_unsol_hdr
- *      XMSTATE_BIT_UNS_INIT     - prepare un-solicit data header and digest
- *      XMSTATE_BIT_UNS_HDR      - send un-solicit header
- *
- *iscsi_send_unsol_pdu
- *      XMSTATE_BIT_UNS_DATA     - send un-solicit data in progress
- *
- *iscsi_send_sol_pdu
- *      XMSTATE_BIT_SOL_HDR_INIT - solicit data header and digest initialize
- *      XMSTATE_BIT_SOL_HDR      - send solicit header
- *      XMSTATE_BIT_SOL_DATA     - send solicit data
- *
- *iscsi_tcp_ctask_xmit
- *      XMSTATE_BIT_IMM_DATA     - xmit managment data (??)
- **/
-static int
-iscsi_tcp_ctask_xmit(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
-{
-        struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
-        int rc = 0;
-
-        debug_scsi("ctask deq [cid %d xmstate %x itt 0x%x]\n",
-                conn->id, tcp_ctask->xmstate, ctask->itt);
-
-        rc = iscsi_send_cmd_hdr(conn, ctask);
-        if (rc)
-                return rc;
-        if (ctask->sc->sc_data_direction != DMA_TO_DEVICE)
-                return 0;
-
-        if (test_bit(XMSTATE_BIT_IMM_DATA, &tcp_ctask->xmstate)) {
-                rc = iscsi_send_data(ctask, &tcp_ctask->sendbuf, &tcp_ctask->sg,
-                                     &tcp_ctask->sent, &ctask->imm_count,
-                                     &tcp_ctask->immbuf, &tcp_ctask->immdigest);
-                if (rc)
-                        return rc;
-                clear_bit(XMSTATE_BIT_IMM_DATA, &tcp_ctask->xmstate);
-        }
-
-        rc = iscsi_send_unsol_pdu(conn, ctask);
-        if (rc)
-                return rc;
-
-        rc = iscsi_send_sol_pdu(conn, ctask);
-        if (rc)
-                return rc;
-
-        return rc;
+fail:
+        iscsi_conn_failure(conn, rc);
+        return -EIO;
 }
 
 static struct iscsi_cls_conn *
@@ -1784,9 +1492,6 @@ iscsi_tcp_conn_create(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
 
         conn->dd_data = tcp_conn;
         tcp_conn->iscsi_conn = conn;
-        tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER;
-        /* initial operational parameters */
-        tcp_conn->hdr_size = sizeof(struct iscsi_hdr);
 
         tcp_conn->tx_hash.tfm = crypto_alloc_hash("crc32c", 0,
                                                   CRYPTO_ALG_ASYNC);
@@ -1863,11 +1568,9 @@ static void
 iscsi_tcp_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
 {
         struct iscsi_conn *conn = cls_conn->dd_data;
-        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
 
         iscsi_conn_stop(cls_conn, flag);
         iscsi_tcp_release_conn(conn);
-        tcp_conn->hdr_size = sizeof(struct iscsi_hdr);
 }
 
 static int iscsi_tcp_get_addr(struct iscsi_conn *conn, struct socket *sock,
@@ -1967,7 +1670,7 @@ iscsi_tcp_conn_bind(struct iscsi_cls_session *cls_session,
         /*
          * set receive state machine into initial state
          */
-        tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER;
+        iscsi_tcp_hdr_recv_prep(tcp_conn);
         return 0;
 
 free_socket:
@@ -1977,10 +1680,17 @@ free_socket:
 
 /* called with host lock */
 static void
-iscsi_tcp_mgmt_init(struct iscsi_conn *conn, struct iscsi_mgmt_task *mtask)
+iscsi_tcp_mtask_init(struct iscsi_conn *conn, struct iscsi_mgmt_task *mtask)
 {
-        struct iscsi_tcp_mgmt_task *tcp_mtask = mtask->dd_data;
-        tcp_mtask->xmstate = 1 << XMSTATE_BIT_IMM_HDR_INIT;
+        debug_scsi("mtask deq [cid %d itt 0x%x]\n", conn->id, mtask->itt);
+
+        /* Prepare PDU, optionally w/ immediate data */
+        iscsi_tcp_send_hdr_prep(conn, mtask->hdr, sizeof(*mtask->hdr));
+
+        /* If we have immediate data, attach a payload */
+        if (mtask->data_count)
+                iscsi_tcp_send_linear_data_prepare(conn, mtask->data,
+                                                   mtask->data_count);
 }
 
 static int
@@ -2003,8 +1713,7 @@ iscsi_r2tpool_alloc(struct iscsi_session *session)
                  */
 
                 /* R2T pool */
-                if (iscsi_pool_init(&tcp_ctask->r2tpool, session->max_r2t * 4,
-                                    (void***)&tcp_ctask->r2ts,
+                if (iscsi_pool_init(&tcp_ctask->r2tpool, session->max_r2t * 4, NULL,
                                     sizeof(struct iscsi_r2t_info))) {
                         goto r2t_alloc_fail;
                 }
@@ -2013,8 +1722,7 @@ iscsi_r2tpool_alloc(struct iscsi_session *session)
                 tcp_ctask->r2tqueue = kfifo_alloc(
                       session->max_r2t * 4 * sizeof(void*), GFP_KERNEL, NULL);
                 if (tcp_ctask->r2tqueue == ERR_PTR(-ENOMEM)) {
-                        iscsi_pool_free(&tcp_ctask->r2tpool,
-                                        (void**)tcp_ctask->r2ts);
+                        iscsi_pool_free(&tcp_ctask->r2tpool);
                         goto r2t_alloc_fail;
                 }
         }
@@ -2027,8 +1735,7 @@ r2t_alloc_fail:
                 struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
 
                 kfifo_free(tcp_ctask->r2tqueue);
-                iscsi_pool_free(&tcp_ctask->r2tpool,
-                                (void**)tcp_ctask->r2ts);
+                iscsi_pool_free(&tcp_ctask->r2tpool);
         }
         return -ENOMEM;
 }
@@ -2043,8 +1750,7 @@ iscsi_r2tpool_free(struct iscsi_session *session)
                 struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
 
                 kfifo_free(tcp_ctask->r2tqueue);
-                iscsi_pool_free(&tcp_ctask->r2tpool,
-                                (void**)tcp_ctask->r2ts);
+                iscsi_pool_free(&tcp_ctask->r2tpool);
         }
 }
 
@@ -2060,9 +1766,6 @@ iscsi_conn_set_param(struct iscsi_cls_conn *cls_conn, enum iscsi_param param,
         switch(param) {
         case ISCSI_PARAM_HDRDGST_EN:
                 iscsi_set_param(cls_conn, param, buf, buflen);
-                tcp_conn->hdr_size = sizeof(struct iscsi_hdr);
-                if (conn->hdrdgst_en)
-                        tcp_conn->hdr_size += sizeof(__u32);
                 break;
         case ISCSI_PARAM_DATADGST_EN:
                 iscsi_set_param(cls_conn, param, buf, buflen);
@@ -2071,12 +1774,12 @@ iscsi_conn_set_param(struct iscsi_cls_conn *cls_conn, enum iscsi_param param,
                 break;
         case ISCSI_PARAM_MAX_R2T:
                 sscanf(buf, "%d", &value);
-                if (session->max_r2t == roundup_pow_of_two(value))
+                if (value <= 0 || !is_power_of_2(value))
+                        return -EINVAL;
+                if (session->max_r2t == value)
                         break;
                 iscsi_r2tpool_free(session);
                 iscsi_set_param(cls_conn, param, buf, buflen);
-                if (session->max_r2t & (session->max_r2t - 1))
-                        session->max_r2t = roundup_pow_of_two(session->max_r2t);
                 if (iscsi_r2tpool_alloc(session))
                         return -ENOMEM;
                 break;
@@ -2183,14 +1886,15 @@ iscsi_tcp_session_create(struct iscsi_transport *iscsit,
                 struct iscsi_cmd_task *ctask = session->cmds[cmd_i];
                 struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
 
-                ctask->hdr = &tcp_ctask->hdr;
+                ctask->hdr = &tcp_ctask->hdr.cmd_hdr;
+                ctask->hdr_max = sizeof(tcp_ctask->hdr) - ISCSI_DIGEST_SIZE;
         }
 
         for (cmd_i = 0; cmd_i < session->mgmtpool_max; cmd_i++) {
                 struct iscsi_mgmt_task *mtask = session->mgmt_cmds[cmd_i];
                 struct iscsi_tcp_mgmt_task *tcp_mtask = mtask->dd_data;
 
-                mtask->hdr = &tcp_mtask->hdr;
+                mtask->hdr = (struct iscsi_hdr *) &tcp_mtask->hdr;
         }
 
         if (iscsi_r2tpool_alloc(class_to_transport_session(cls_session)))
@@ -2222,12 +1926,14 @@ static struct scsi_host_template iscsi_sht = {
         .queuecommand           = iscsi_queuecommand,
         .change_queue_depth     = iscsi_change_queue_depth,
         .can_queue              = ISCSI_DEF_XMIT_CMDS_MAX - 1,
-        .sg_tablesize           = ISCSI_SG_TABLESIZE,
+        .sg_tablesize           = 4096,
         .max_sectors            = 0xFFFF,
         .cmd_per_lun            = ISCSI_DEF_CMD_PER_LUN,
         .eh_abort_handler       = iscsi_eh_abort,
+        .eh_device_reset_handler= iscsi_eh_device_reset,
         .eh_host_reset_handler  = iscsi_eh_host_reset,
         .use_clustering         = DISABLE_CLUSTERING,
+        .use_sg_chaining        = ENABLE_SG_CHAINING,
         .slave_configure        = iscsi_tcp_slave_configure,
         .proc_name              = "iscsi_tcp",
         .this_id                = -1,
@@ -2257,14 +1963,17 @@ static struct iscsi_transport iscsi_tcp_transport = {
                                   ISCSI_PERSISTENT_ADDRESS |
                                   ISCSI_TARGET_NAME | ISCSI_TPGT |
                                   ISCSI_USERNAME | ISCSI_PASSWORD |
-                                  ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN,
+                                  ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN |
+                                  ISCSI_FAST_ABORT | ISCSI_ABORT_TMO |
+                                  ISCSI_LU_RESET_TMO |
+                                  ISCSI_PING_TMO | ISCSI_RECV_TMO,
         .host_param_mask        = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
                                   ISCSI_HOST_INITIATOR_NAME |
                                   ISCSI_HOST_NETDEV_NAME,
         .host_template          = &iscsi_sht,
         .conndata_size          = sizeof(struct iscsi_conn),
         .max_conn               = 1,
-        .max_cmd_len            = ISCSI_TCP_MAX_CMD_LEN,
+        .max_cmd_len            = 16,
         /* session management */
         .create_session         = iscsi_tcp_session_create,
         .destroy_session        = iscsi_tcp_session_destroy,
@@ -2283,8 +1992,8 @@ static struct iscsi_transport iscsi_tcp_transport = {
         /* IO */
         .send_pdu               = iscsi_conn_send_pdu,
         .get_stats              = iscsi_conn_get_stats,
-        .init_cmd_task          = iscsi_tcp_cmd_init,
-        .init_mgmt_task         = iscsi_tcp_mgmt_init,
+        .init_cmd_task          = iscsi_tcp_ctask_init,
+        .init_mgmt_task         = iscsi_tcp_mtask_init,
         .xmit_cmd_task          = iscsi_tcp_ctask_xmit,
         .xmit_mgmt_task         = iscsi_tcp_mtask_xmit,
         .cleanup_cmd_task       = iscsi_tcp_cleanup_ctask,
diff --git a/drivers/scsi/iscsi_tcp.h b/drivers/scsi/iscsi_tcp.h
index 68c36cc8997e..ed0b991d1e72 100644
--- a/drivers/scsi/iscsi_tcp.h
+++ b/drivers/scsi/iscsi_tcp.h
@@ -24,71 +24,61 @@
 
 #include <scsi/libiscsi.h>
 
-/* Socket's Receive state machine */
-#define IN_PROGRESS_WAIT_HEADER         0x0
-#define IN_PROGRESS_HEADER_GATHER       0x1
-#define IN_PROGRESS_DATA_RECV           0x2
-#define IN_PROGRESS_DDIGEST_RECV        0x3
-#define IN_PROGRESS_PAD_RECV            0x4
-
-/* xmit state machine */
-#define XMSTATE_VALUE_IDLE                      0
-#define XMSTATE_BIT_CMD_HDR_INIT                0
-#define XMSTATE_BIT_CMD_HDR_XMIT                1
-#define XMSTATE_BIT_IMM_HDR                     2
-#define XMSTATE_BIT_IMM_DATA                    3
-#define XMSTATE_BIT_UNS_INIT                    4
-#define XMSTATE_BIT_UNS_HDR                     5
-#define XMSTATE_BIT_UNS_DATA                    6
-#define XMSTATE_BIT_SOL_HDR                     7
-#define XMSTATE_BIT_SOL_DATA                    8
-#define XMSTATE_BIT_W_PAD                       9
-#define XMSTATE_BIT_W_RESEND_PAD                10
-#define XMSTATE_BIT_W_RESEND_DATA_DIGEST        11
-#define XMSTATE_BIT_IMM_HDR_INIT                12
-#define XMSTATE_BIT_SOL_HDR_INIT                13
-
-#define ISCSI_PAD_LEN                   4
-#define ISCSI_SG_TABLESIZE              SG_ALL
-#define ISCSI_TCP_MAX_CMD_LEN           16
-
 struct crypto_hash;
 struct socket;
+struct iscsi_tcp_conn;
+struct iscsi_segment;
+
+typedef int iscsi_segment_done_fn_t(struct iscsi_tcp_conn *,
+                                    struct iscsi_segment *);
+
+struct iscsi_segment {
+        unsigned char           *data;
+        unsigned int            size;
+        unsigned int            copied;
+        unsigned int            total_size;
+        unsigned int            total_copied;
+
+        struct hash_desc        *hash;
+        unsigned char           recv_digest[ISCSI_DIGEST_SIZE];
+        unsigned char           digest[ISCSI_DIGEST_SIZE];
+        unsigned int            digest_len;
+
+        struct scatterlist      *sg;
+        void                    *sg_mapped;
+        unsigned int            sg_offset;
+
+        iscsi_segment_done_fn_t *done;
+};
 
 /* Socket connection recieve helper */
 struct iscsi_tcp_recv {
         struct iscsi_hdr        *hdr;
-        struct sk_buff          *skb;
-        int                     offset;
-        int                     len;
-        int                     hdr_offset;
-        int                     copy;
-        int                     copied;
-        int                     padding;
-        struct iscsi_cmd_task   *ctask;         /* current cmd in progress */
+        struct iscsi_segment    segment;
+
+        /* Allocate buffer for BHS + AHS */
+        uint32_t                hdr_buf[64];
 
         /* copied and flipped values */
         int                     datalen;
-        int                     datadgst;
-        char                    zero_copy_hdr;
+};
+
+/* Socket connection send helper */
+struct iscsi_tcp_send {
+        struct iscsi_hdr        *hdr;
+        struct iscsi_segment    segment;
+        struct iscsi_segment    data_segment;
 };
 
 struct iscsi_tcp_conn {
         struct iscsi_conn       *iscsi_conn;
         struct socket           *sock;
-        struct iscsi_hdr        hdr;            /* header placeholder */
-        char                    hdrext[4*sizeof(__u16) +
-                                    sizeof(__u32)];
-        int                     data_copied;
         int                     stop_stage;     /* conn_stop() flag: *
                                                  * stop to recover,  *
                                                  * stop to terminate */
-        /* iSCSI connection-wide sequencing */
-        int                     hdr_size;       /* PDU header size */
-
         /* control data */
         struct iscsi_tcp_recv   in;             /* TCP receive context */
-        int                     in_progress;    /* connection state machine */
+        struct iscsi_tcp_send   out;            /* TCP send context */
 
         /* old values for socket callbacks */
         void                    (*old_data_ready)(struct sock *, int);
@@ -103,29 +93,19 @@ struct iscsi_tcp_conn {
         uint32_t                sendpage_failures_cnt;
         uint32_t                discontiguous_hdr_cnt;
 
-        ssize_t (*sendpage)(struct socket *, struct page *, int, size_t, int);
-};
+        int                     error;
 
-struct iscsi_buf {
-        struct scatterlist      sg;
-        unsigned int            sent;
-        char                    use_sendmsg;
+        ssize_t (*sendpage)(struct socket *, struct page *, int, size_t, int);
 };
 
 struct iscsi_data_task {
         struct iscsi_data       hdr;                    /* PDU */
-        char                    hdrext[sizeof(__u32)];  /* Header-Digest */
-        struct iscsi_buf        digestbuf;              /* digest buffer */
-        uint32_t                digest;                 /* data digest */
+        char                    hdrext[ISCSI_DIGEST_SIZE];/* Header-Digest */
 };
 
 struct iscsi_tcp_mgmt_task {
         struct iscsi_hdr        hdr;
-        char                    hdrext[sizeof(__u32)]; /* Header-Digest */
-        unsigned long           xmstate;        /* mgmt xmit progress */
-        struct iscsi_buf        headbuf;        /* header buffer */
-        struct iscsi_buf        sendbuf;        /* in progress buffer */
-        int                     sent;
+        char                    hdrext[ISCSI_DIGEST_SIZE]; /* Header-Digest */
 };
 
 struct iscsi_r2t_info {
@@ -133,38 +113,26 @@ struct iscsi_r2t_info {
         __be32                  exp_statsn;     /* copied from R2T */
         uint32_t                data_length;    /* copied from R2T */
         uint32_t                data_offset;    /* copied from R2T */
-        struct iscsi_buf        headbuf;        /* Data-Out Header Buffer */
-        struct iscsi_buf        sendbuf;        /* Data-Out in progress buffer*/
         int                     sent;           /* R2T sequence progress */
         int                     data_count;     /* DATA-Out payload progress */
-        struct scatterlist      *sg;            /* per-R2T SG list */
         int                     solicit_datasn;
-        struct iscsi_data_task   dtask;        /* which data task */
+        struct iscsi_data_task  dtask;          /* Data-Out header buf */
 };
 
 struct iscsi_tcp_cmd_task {
-        struct iscsi_cmd        hdr;
-        char                    hdrext[4*sizeof(__u16)+ /* AHS */
-                                    sizeof(__u32)];     /* HeaderDigest */
-        char                    pad[ISCSI_PAD_LEN];
-        int                     pad_count;              /* padded bytes */
-        struct iscsi_buf        headbuf;                /* header buf (xmit) */
-        struct iscsi_buf        sendbuf;                /* in progress buffer*/
-        unsigned long           xmstate;                /* xmit xtate machine */
+        struct iscsi_hdr_buff {
+                struct iscsi_cmd        cmd_hdr;
+                char                    hdrextbuf[ISCSI_MAX_AHS_SIZE +
+                                                  ISCSI_DIGEST_SIZE];
+        } hdr;
+
         int                     sent;
-        struct scatterlist      *sg;                    /* per-cmd SG list  */
-        struct scatterlist      *bad_sg;                /* assert statement */
-        int                     sg_count;               /* SG's to process  */
-        uint32_t                exp_datasn;             /* expected target's R2TSN/DataSN */
+        uint32_t                exp_datasn;     /* expected target's R2TSN/DataSN */
         int                     data_offset;
-        struct iscsi_r2t_info   *r2t;                   /* in progress R2T    */
-        struct iscsi_queue      r2tpool;
+        struct iscsi_r2t_info   *r2t;           /* in progress R2T    */
+        struct iscsi_pool       r2tpool;
         struct kfifo            *r2tqueue;
-        struct iscsi_r2t_info   **r2ts;
-        int                     digest_count;
-        uint32_t                immdigest;              /* for imm data */
-        struct iscsi_buf        immbuf;                 /* for imm data digest */
-        struct iscsi_data_task  unsol_dtask;    /* unsol data task */
+        struct iscsi_data_task  unsol_dtask;    /* Data-Out header buf */
 };
 
 #endif /* ISCSI_H */
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 8b57af5baaec..553168ae44f1 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -24,6 +24,7 @@
 #include <linux/types.h>
 #include <linux/kfifo.h>
 #include <linux/delay.h>
+#include <linux/log2.h>
 #include <asm/unaligned.h>
 #include <net/tcp.h>
 #include <scsi/scsi_cmnd.h>
@@ -86,7 +87,7 @@ iscsi_update_cmdsn(struct iscsi_session *session, struct iscsi_nopin *hdr)
                  * xmit thread
                  */
                 if (!list_empty(&session->leadconn->xmitqueue) ||
-                    __kfifo_len(session->leadconn->mgmtqueue))
+                    !list_empty(&session->leadconn->mgmtqueue))
                         scsi_queue_work(session->host,
                                         &session->leadconn->xmitwork);
         }
@@ -122,6 +123,20 @@ void iscsi_prep_unsolicit_data_pdu(struct iscsi_cmd_task *ctask,
 }
 EXPORT_SYMBOL_GPL(iscsi_prep_unsolicit_data_pdu);
 
+static int iscsi_add_hdr(struct iscsi_cmd_task *ctask, unsigned len)
+{
+        unsigned exp_len = ctask->hdr_len + len;
+
+        if (exp_len > ctask->hdr_max) {
+                WARN_ON(1);
+                return -EINVAL;
+        }
+
+        WARN_ON(len & (ISCSI_PAD_LEN - 1)); /* caller must pad the AHS */
+        ctask->hdr_len = exp_len;
+        return 0;
+}
+
 /**
  * iscsi_prep_scsi_cmd_pdu - prep iscsi scsi cmd pdu
  * @ctask: iscsi cmd task
@@ -129,27 +144,32 @@ EXPORT_SYMBOL_GPL(iscsi_prep_unsolicit_data_pdu);
  * Prep basic iSCSI PDU fields for a scsi cmd pdu. The LLD should set
  * fields like dlength or final based on how much data it sends
  */
-static void iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask)
+static int iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask)
 {
         struct iscsi_conn *conn = ctask->conn;
         struct iscsi_session *session = conn->session;
         struct iscsi_cmd *hdr = ctask->hdr;
         struct scsi_cmnd *sc = ctask->sc;
+        unsigned hdrlength;
+        int rc;
 
-        hdr->opcode = ISCSI_OP_SCSI_CMD;
-        hdr->flags = ISCSI_ATTR_SIMPLE;
-        int_to_scsilun(sc->device->lun, (struct scsi_lun *)hdr->lun);
-        hdr->itt = build_itt(ctask->itt, conn->id, session->age);
-        hdr->data_length = cpu_to_be32(scsi_bufflen(sc));
-        hdr->cmdsn = cpu_to_be32(session->cmdsn);
-        session->cmdsn++;
-        hdr->exp_statsn = cpu_to_be32(conn->exp_statsn);
-        memcpy(hdr->cdb, sc->cmnd, sc->cmd_len);
+        ctask->hdr_len = 0;
+        rc = iscsi_add_hdr(ctask, sizeof(*hdr));
+        if (rc)
+                return rc;
+        hdr->opcode = ISCSI_OP_SCSI_CMD;
+        hdr->flags = ISCSI_ATTR_SIMPLE;
+        int_to_scsilun(sc->device->lun, (struct scsi_lun *)hdr->lun);
+        hdr->itt = build_itt(ctask->itt, conn->id, session->age);
+        hdr->data_length = cpu_to_be32(scsi_bufflen(sc));
+        hdr->cmdsn = cpu_to_be32(session->cmdsn);
+        session->cmdsn++;
+        hdr->exp_statsn = cpu_to_be32(conn->exp_statsn);
+        memcpy(hdr->cdb, sc->cmnd, sc->cmd_len);
         if (sc->cmd_len < MAX_COMMAND_SIZE)
                 memset(&hdr->cdb[sc->cmd_len], 0,
                         MAX_COMMAND_SIZE - sc->cmd_len);
 
-        ctask->data_count = 0;
         ctask->imm_count = 0;
         if (sc->sc_data_direction == DMA_TO_DEVICE) {
                 hdr->flags |= ISCSI_FLAG_CMD_WRITE;
@@ -178,9 +198,9 @@ static void iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask)
                         else
                                 ctask->imm_count = min(scsi_bufflen(sc),
                                                         conn->max_xmit_dlength);
-                        hton24(ctask->hdr->dlength, ctask->imm_count);
+                        hton24(hdr->dlength, ctask->imm_count);
                 } else
-                        zero_data(ctask->hdr->dlength);
+                        zero_data(hdr->dlength);
 
                 if (!session->initial_r2t_en) {
                         ctask->unsol_count = min((session->first_burst),
@@ -190,7 +210,7 @@ static void iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask)
 
                 if (!ctask->unsol_count)
                         /* No unsolicit Data-Out's */
-                        ctask->hdr->flags |= ISCSI_FLAG_CMD_FINAL;
+                        hdr->flags |= ISCSI_FLAG_CMD_FINAL;
         } else {
                 hdr->flags |= ISCSI_FLAG_CMD_FINAL;
                 zero_data(hdr->dlength);
@@ -199,13 +219,25 @@ static void iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask)
                         hdr->flags |= ISCSI_FLAG_CMD_READ;
         }
 
-        conn->scsicmd_pdus_cnt++;
+        /* calculate size of additional header segments (AHSs) */
+        hdrlength = ctask->hdr_len - sizeof(*hdr);
+
+        WARN_ON(hdrlength & (ISCSI_PAD_LEN-1));
+        hdrlength /= ISCSI_PAD_LEN;
+
+        WARN_ON(hdrlength >= 256);
+        hdr->hlength = hdrlength & 0xFF;
+
+        if (conn->session->tt->init_cmd_task(conn->ctask))
+                return EIO;
 
-        debug_scsi("iscsi prep [%s cid %d sc %p cdb 0x%x itt 0x%x len %d "
+        conn->scsicmd_pdus_cnt++;
+        debug_scsi("iscsi prep [%s cid %d sc %p cdb 0x%x itt 0x%x len %d "
                 "cmdsn %d win %d]\n",
-                sc->sc_data_direction == DMA_TO_DEVICE ? "write" : "read",
+                sc->sc_data_direction == DMA_TO_DEVICE ? "write" : "read",
                 conn->id, sc, sc->cmnd[0], ctask->itt, scsi_bufflen(sc),
-                session->cmdsn, session->max_cmdsn - session->exp_cmdsn + 1);
+                session->cmdsn, session->max_cmdsn - session->exp_cmdsn + 1);
+        return 0;
 }
 
 /**
@@ -218,13 +250,16 @@ static void iscsi_prep_scsi_cmd_pdu(struct iscsi_cmd_task *ctask)
  */
 static void iscsi_complete_command(struct iscsi_cmd_task *ctask)
 {
-        struct iscsi_session *session = ctask->conn->session;
+        struct iscsi_conn *conn = ctask->conn;
+        struct iscsi_session *session = conn->session;
         struct scsi_cmnd *sc = ctask->sc;
 
         ctask->state = ISCSI_TASK_COMPLETED;
         ctask->sc = NULL;
         /* SCSI eh reuses commands to verify us */
         sc->SCp.ptr = NULL;
+        if (conn->ctask == ctask)
+                conn->ctask = NULL;
         list_del_init(&ctask->running);
         __kfifo_put(session->cmdpool.queue, (void*)&ctask, sizeof(void*));
         sc->scsi_done(sc);
@@ -241,6 +276,112 @@ static void __iscsi_put_ctask(struct iscsi_cmd_task *ctask)
                 iscsi_complete_command(ctask);
 }
 
+/*
+ * session lock must be held
+ */
+static void fail_command(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
+                         int err)
+{
+        struct scsi_cmnd *sc;
+
+        sc = ctask->sc;
+        if (!sc)
+                return;
+
+        if (ctask->state == ISCSI_TASK_PENDING)
+                /*
+                 * cmd never made it to the xmit thread, so we should not count
+                 * the cmd in the sequencing
+                 */
+                conn->session->queued_cmdsn--;
+        else
+                conn->session->tt->cleanup_cmd_task(conn, ctask);
+
+        sc->result = err;
+        scsi_set_resid(sc, scsi_bufflen(sc));
+        if (conn->ctask == ctask)
+                conn->ctask = NULL;
+        /* release ref from queuecommand */
+        __iscsi_put_ctask(ctask);
+}
+
+/**
+ * iscsi_free_mgmt_task - return mgmt task back to pool
+ * @conn: iscsi connection
+ * @mtask: mtask
+ *
+ * Must be called with session lock.
+ */
+void iscsi_free_mgmt_task(struct iscsi_conn *conn,
+                          struct iscsi_mgmt_task *mtask)
+{
+        list_del_init(&mtask->running);
+        if (conn->login_mtask == mtask)
+                return;
+
+        if (conn->ping_mtask == mtask)
+                conn->ping_mtask = NULL;
+        __kfifo_put(conn->session->mgmtpool.queue,
+                    (void*)&mtask, sizeof(void*));
+}
+EXPORT_SYMBOL_GPL(iscsi_free_mgmt_task);
+
+static struct iscsi_mgmt_task *
+__iscsi_conn_send_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
+                      char *data, uint32_t data_size)
+{
+        struct iscsi_session *session = conn->session;
+        struct iscsi_mgmt_task *mtask;
+
+        if (session->state == ISCSI_STATE_TERMINATE)
+                return NULL;
+
+        if (hdr->opcode == (ISCSI_OP_LOGIN | ISCSI_OP_IMMEDIATE) ||
+            hdr->opcode == (ISCSI_OP_TEXT | ISCSI_OP_IMMEDIATE))
+                /*
+                 * Login and Text are sent serially, in
+                 * request-followed-by-response sequence.
+                 * Same mtask can be used. Same ITT must be used.
+                 * Note that login_mtask is preallocated at conn_create().
+                 */
+                mtask = conn->login_mtask;
+        else {
+                BUG_ON(conn->c_stage == ISCSI_CONN_INITIAL_STAGE);
+                BUG_ON(conn->c_stage == ISCSI_CONN_STOPPED);
+
+                if (!__kfifo_get(session->mgmtpool.queue,
+                                 (void*)&mtask, sizeof(void*)))
+                        return NULL;
+        }
+
+        if (data_size) {
+                memcpy(mtask->data, data, data_size);
+                mtask->data_count = data_size;
+        } else
+                mtask->data_count = 0;
+
+        memcpy(mtask->hdr, hdr, sizeof(struct iscsi_hdr));
+        INIT_LIST_HEAD(&mtask->running);
+        list_add_tail(&mtask->running, &conn->mgmtqueue);
+        return mtask;
+}
+
+int iscsi_conn_send_pdu(struct iscsi_cls_conn *cls_conn, struct iscsi_hdr *hdr,
+                        char *data, uint32_t data_size)
+{
+        struct iscsi_conn *conn = cls_conn->dd_data;
+        struct iscsi_session *session = conn->session;
+        int err = 0;
+
+        spin_lock_bh(&session->lock);
+        if (!__iscsi_conn_send_pdu(conn, hdr, data, data_size))
+                err = -EPERM;
+        spin_unlock_bh(&session->lock);
+        scsi_queue_work(session->host, &conn->xmitwork);
+        return err;
+}
+EXPORT_SYMBOL_GPL(iscsi_conn_send_pdu);
+
 /**
  * iscsi_cmd_rsp - SCSI Command Response processing
  * @conn: iscsi connection
@@ -291,17 +432,19 @@ invalid_datalen:
                            min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE));
         }
 
-        if (rhdr->flags & ISCSI_FLAG_CMD_UNDERFLOW) {
+        if (rhdr->flags & (ISCSI_FLAG_CMD_UNDERFLOW |
+                           ISCSI_FLAG_CMD_OVERFLOW)) {
                 int res_count = be32_to_cpu(rhdr->residual_count);
 
-                if (res_count > 0 && res_count <= scsi_bufflen(sc))
+                if (res_count > 0 &&
+                    (rhdr->flags & ISCSI_FLAG_CMD_OVERFLOW ||
+                     res_count <= scsi_bufflen(sc)))
                         scsi_set_resid(sc, res_count);
                 else
                         sc->result = (DID_BAD_TARGET << 16) | rhdr->cmd_status;
-        } else if (rhdr->flags & ISCSI_FLAG_CMD_BIDI_UNDERFLOW)
+        } else if (rhdr->flags & (ISCSI_FLAG_CMD_BIDI_UNDERFLOW |
+                                  ISCSI_FLAG_CMD_BIDI_OVERFLOW))
                 sc->result = (DID_BAD_TARGET << 16) | rhdr->cmd_status;
-        else if (rhdr->flags & ISCSI_FLAG_CMD_OVERFLOW)
-                scsi_set_resid(sc, be32_to_cpu(rhdr->residual_count));
 
 out:
         debug_scsi("done [sc %lx res %d itt 0x%x]\n",
@@ -318,18 +461,51 @@ static void iscsi_tmf_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
         conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
         conn->tmfrsp_pdus_cnt++;
 
-        if (conn->tmabort_state != TMABORT_INITIAL)
+        if (conn->tmf_state != TMF_QUEUED)
                 return;
 
         if (tmf->response == ISCSI_TMF_RSP_COMPLETE)
-                conn->tmabort_state = TMABORT_SUCCESS;
+                conn->tmf_state = TMF_SUCCESS;
         else if (tmf->response == ISCSI_TMF_RSP_NO_TASK)
-                conn->tmabort_state = TMABORT_NOT_FOUND;
+                conn->tmf_state = TMF_NOT_FOUND;
         else
-                conn->tmabort_state = TMABORT_FAILED;
+                conn->tmf_state = TMF_FAILED;
         wake_up(&conn->ehwait);
 }
 
+static void iscsi_send_nopout(struct iscsi_conn *conn, struct iscsi_nopin *rhdr)
+{
+        struct iscsi_nopout hdr;
+        struct iscsi_mgmt_task *mtask;
+
+        if (!rhdr && conn->ping_mtask)
+                return;
+
+        memset(&hdr, 0, sizeof(struct iscsi_nopout));
+        hdr.opcode = ISCSI_OP_NOOP_OUT | ISCSI_OP_IMMEDIATE;
+        hdr.flags = ISCSI_FLAG_CMD_FINAL;
+
+        if (rhdr) {
+                memcpy(hdr.lun, rhdr->lun, 8);
+                hdr.ttt = rhdr->ttt;
+                hdr.itt = RESERVED_ITT;
+        } else
+                hdr.ttt = RESERVED_ITT;
+
+        mtask = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)&hdr, NULL, 0);
+        if (!mtask) {
+                printk(KERN_ERR "Could not send nopout\n");
+                return;
+        }
+
+        /* only track our nops */
+        if (!rhdr) {
+                conn->ping_mtask = mtask;
+                conn->last_ping = jiffies;
+        }
+        scsi_queue_work(conn->session->host, &conn->xmitwork);
+}
+
 static int iscsi_handle_reject(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
                                char *data, int datalen)
 {
@@ -374,6 +550,7 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
         struct iscsi_mgmt_task *mtask;
         uint32_t itt;
 
+        conn->last_recv = jiffies;
         if (hdr->itt != RESERVED_ITT)
                 itt = get_itt(hdr->itt);
         else
@@ -429,10 +606,7 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
                          */
                         if (iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen))
                                 rc = ISCSI_ERR_CONN_FAILED;
-                        list_del(&mtask->running);
-                        if (conn->login_mtask != mtask)
-                                __kfifo_put(session->mgmtpool.queue,
-                                            (void*)&mtask, sizeof(void*));
+                        iscsi_free_mgmt_task(conn, mtask);
                         break;
                 case ISCSI_OP_SCSI_TMFUNC_RSP:
                         if (datalen) {
@@ -441,20 +615,26 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
                         }
 
                         iscsi_tmf_rsp(conn, hdr);
+                        iscsi_free_mgmt_task(conn, mtask);
                         break;
                 case ISCSI_OP_NOOP_IN:
-                        if (hdr->ttt != cpu_to_be32(ISCSI_RESERVED_TAG) || datalen) {
+                        if (hdr->ttt != cpu_to_be32(ISCSI_RESERVED_TAG) ||
+                            datalen) {
                                 rc = ISCSI_ERR_PROTO;
                                 break;
                         }
                         conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
 
-                        if (iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen))
-                                rc = ISCSI_ERR_CONN_FAILED;
-                        list_del(&mtask->running);
-                        if (conn->login_mtask != mtask)
-                                __kfifo_put(session->mgmtpool.queue,
-                                            (void*)&mtask, sizeof(void*));
+                        if (conn->ping_mtask != mtask) {
+                                /*
+                                 * If this is not in response to one of our
+                                 * nops then it must be from userspace.
+                                 */
+                                if (iscsi_recv_pdu(conn->cls_conn, hdr, data,
+                                                   datalen))
+                                        rc = ISCSI_ERR_CONN_FAILED;
+                        }
+                        iscsi_free_mgmt_task(conn, mtask);
                         break;
                 default:
                         rc = ISCSI_ERR_BAD_OPCODE;
@@ -473,8 +653,7 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
                         if (hdr->ttt == cpu_to_be32(ISCSI_RESERVED_TAG))
                                 break;
 
-                        if (iscsi_recv_pdu(conn->cls_conn, hdr, NULL, 0))
-                                rc = ISCSI_ERR_CONN_FAILED;
+                        iscsi_send_nopout(conn, (struct iscsi_nopin*)hdr);
                         break;
                 case ISCSI_OP_REJECT:
                         rc = iscsi_handle_reject(conn, hdr, data, datalen);
@@ -609,20 +788,19 @@ static void iscsi_prep_mtask(struct iscsi_conn *conn,
                 session->tt->init_mgmt_task(conn, mtask);
 
         debug_scsi("mgmtpdu [op 0x%x hdr->itt 0x%x datalen %d]\n",
-                   hdr->opcode, hdr->itt, mtask->data_count);
+                   hdr->opcode & ISCSI_OPCODE_MASK, hdr->itt,
+                   mtask->data_count);
 }
 
 static int iscsi_xmit_mtask(struct iscsi_conn *conn)
 {
         struct iscsi_hdr *hdr = conn->mtask->hdr;
-        int rc, was_logout = 0;
+        int rc;
 
+        if ((hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
+                conn->session->state = ISCSI_STATE_LOGGING_OUT;
         spin_unlock_bh(&conn->session->lock);
-        if ((hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT) {
-                conn->session->state = ISCSI_STATE_IN_RECOVERY;
-                iscsi_block_session(session_to_cls(conn->session));
-                was_logout = 1;
-        }
+
         rc = conn->session->tt->xmit_mgmt_task(conn, conn->mtask);
         spin_lock_bh(&conn->session->lock);
         if (rc)
@@ -630,11 +808,6 @@ static int iscsi_xmit_mtask(struct iscsi_conn *conn)
 
         /* done with this in-progress mtask */
         conn->mtask = NULL;
-
-        if (was_logout) {
-                set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
-                return -ENODATA;
-        }
         return 0;
 }
 
@@ -658,21 +831,13 @@ static int iscsi_check_cmdsn_window_closed(struct iscsi_conn *conn)
 static int iscsi_xmit_ctask(struct iscsi_conn *conn)
 {
         struct iscsi_cmd_task *ctask = conn->ctask;
-        int rc = 0;
-
-        /*
-         * serialize with TMF AbortTask
-         */
-        if (ctask->state == ISCSI_TASK_ABORTING)
-                goto done;
+        int rc;
 
         __iscsi_get_ctask(ctask);
         spin_unlock_bh(&conn->session->lock);
         rc = conn->session->tt->xmit_cmd_task(conn, ctask);
         spin_lock_bh(&conn->session->lock);
         __iscsi_put_ctask(ctask);
-
-done:
         if (!rc)
                 /* done with this ctask */
                 conn->ctask = NULL;
@@ -680,6 +845,22 @@ done:
 }
 
 /**
+ * iscsi_requeue_ctask - requeue ctask to run from session workqueue
+ * @ctask: ctask to requeue
+ *
+ * LLDs that need to run a ctask from the session workqueue should call
+ * this. The session lock must be held.
+ */
+void iscsi_requeue_ctask(struct iscsi_cmd_task *ctask)
+{
+        struct iscsi_conn *conn = ctask->conn;
+
+        list_move_tail(&ctask->running, &conn->requeue);
+        scsi_queue_work(conn->session->host, &conn->xmitwork);
+}
+EXPORT_SYMBOL_GPL(iscsi_requeue_ctask);
+
+/**
  * iscsi_data_xmit - xmit any command into the scheduled connection
  * @conn: iscsi connection
  *
@@ -717,36 +898,40 @@ static int iscsi_data_xmit(struct iscsi_conn *conn)
          * overflow us with nop-ins
          */
 check_mgmt:
-        while (__kfifo_get(conn->mgmtqueue, (void*)&conn->mtask,
-                           sizeof(void*))) {
+        while (!list_empty(&conn->mgmtqueue)) {
+                conn->mtask = list_entry(conn->mgmtqueue.next,
+                                         struct iscsi_mgmt_task, running);
+                if (conn->session->state == ISCSI_STATE_LOGGING_OUT) {
+                        iscsi_free_mgmt_task(conn, conn->mtask);
+                        conn->mtask = NULL;
+                        continue;
+                }
+
                 iscsi_prep_mtask(conn, conn->mtask);
-                list_add_tail(&conn->mtask->running, &conn->mgmt_run_list);
+                list_move_tail(conn->mgmtqueue.next, &conn->mgmt_run_list);
                 rc = iscsi_xmit_mtask(conn);
                 if (rc)
                         goto again;
         }
 
-        /* process command queue */
+        /* process pending command queue */
         while (!list_empty(&conn->xmitqueue)) {
-                /*
-                 * iscsi tcp may readd the task to the xmitqueue to send
-                 * write data
-                 */
+                if (conn->tmf_state == TMF_QUEUED)
+                        break;
+
                 conn->ctask = list_entry(conn->xmitqueue.next,
                                          struct iscsi_cmd_task, running);
-                switch (conn->ctask->state) {
-                case ISCSI_TASK_ABORTING:
-                        break;
-                case ISCSI_TASK_PENDING:
-                        iscsi_prep_scsi_cmd_pdu(conn->ctask);
-                        conn->session->tt->init_cmd_task(conn->ctask);
-                        /* fall through */
-                default:
-                        conn->ctask->state = ISCSI_TASK_RUNNING;
-                        break;
+                if (conn->session->state == ISCSI_STATE_LOGGING_OUT) {
+                        fail_command(conn, conn->ctask, DID_IMM_RETRY << 16);
+                        continue;
+                }
+                if (iscsi_prep_scsi_cmd_pdu(conn->ctask)) {
+                        fail_command(conn, conn->ctask, DID_ABORT << 16);
+                        continue;
                 }
-                list_move_tail(conn->xmitqueue.next, &conn->run_list);
 
+                conn->ctask->state = ISCSI_TASK_RUNNING;
+                list_move_tail(conn->xmitqueue.next, &conn->run_list);
                 rc = iscsi_xmit_ctask(conn);
                 if (rc)
                         goto again;
@@ -755,7 +940,28 @@ check_mgmt:
                  * we need to check the mgmt queue for nops that need to
                  * be sent to aviod starvation
                  */
-                if (__kfifo_len(conn->mgmtqueue))
+                if (!list_empty(&conn->mgmtqueue))
+                        goto check_mgmt;
+        }
+
+        while (!list_empty(&conn->requeue)) {
+                if (conn->session->fast_abort && conn->tmf_state != TMF_INITIAL)
+                        break;
+
+                /*
+                 * we always do fastlogout - conn stop code will clean up.
+                 */
+                if (conn->session->state == ISCSI_STATE_LOGGING_OUT)
+                        break;
+
+                conn->ctask = list_entry(conn->requeue.next,
+                                         struct iscsi_cmd_task, running);
+                conn->ctask->state = ISCSI_TASK_RUNNING;
+                list_move_tail(conn->requeue.next, &conn->run_list);
+                rc = iscsi_xmit_ctask(conn);
+                if (rc)
+                        goto again;
+                if (!list_empty(&conn->mgmtqueue))
                         goto check_mgmt;
         }
         spin_unlock_bh(&conn->session->lock);
@@ -790,6 +996,7 @@ enum {
         FAILURE_SESSION_TERMINATE,
         FAILURE_SESSION_IN_RECOVERY,
         FAILURE_SESSION_RECOVERY_TIMEOUT,
+        FAILURE_SESSION_LOGGING_OUT,
 };
 
 int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
@@ -805,8 +1012,9 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
         sc->SCp.ptr = NULL;
 
         host = sc->device->host;
-        session = iscsi_hostdata(host->hostdata);
+        spin_unlock(host->host_lock);
 
+        session = iscsi_hostdata(host->hostdata);
         spin_lock(&session->lock);
 
         /*
@@ -822,17 +1030,22 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
                  * be entering our queuecommand while a block is starting
                  * up because the block code is not locked)
                  */
-                if (session->state == ISCSI_STATE_IN_RECOVERY) {
+                switch (session->state) {
+                case ISCSI_STATE_IN_RECOVERY:
                         reason = FAILURE_SESSION_IN_RECOVERY;
                         goto reject;
-                }
-
-                if (session->state == ISCSI_STATE_RECOVERY_FAILED)
+                case ISCSI_STATE_LOGGING_OUT:
+                        reason = FAILURE_SESSION_LOGGING_OUT;
+                        goto reject;
+                case ISCSI_STATE_RECOVERY_FAILED:
                         reason = FAILURE_SESSION_RECOVERY_TIMEOUT;
-                else if (session->state == ISCSI_STATE_TERMINATE)
+                        break;
+                case ISCSI_STATE_TERMINATE:
                         reason = FAILURE_SESSION_TERMINATE;
-                else
+                        break;
+                default:
                         reason = FAILURE_SESSION_FREED;
+                }
                 goto fault;
         }
 
@@ -859,7 +1072,6 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 
         atomic_set(&ctask->refcount, 1);
         ctask->state = ISCSI_TASK_PENDING;
-        ctask->mtask = NULL;
         ctask->conn = conn;
         ctask->sc = sc;
         INIT_LIST_HEAD(&ctask->running);
@@ -868,11 +1080,13 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
         spin_unlock(&session->lock);
 
         scsi_queue_work(host, &conn->xmitwork);
+        spin_lock(host->host_lock);
         return 0;
 
 reject:
         spin_unlock(&session->lock);
         debug_scsi("cmd 0x%x rejected (%d)\n", sc->cmnd[0], reason);
+        spin_lock(host->host_lock);
         return SCSI_MLQUEUE_HOST_BUSY;
 
 fault:
@@ -882,6 +1096,7 @@ fault:
         sc->result = (DID_NO_CONNECT << 16);
         scsi_set_resid(sc, scsi_bufflen(sc));
         sc->scsi_done(sc);
+        spin_lock(host->host_lock);
         return 0;
 }
 EXPORT_SYMBOL_GPL(iscsi_queuecommand);
@@ -895,72 +1110,15 @@ int iscsi_change_queue_depth(struct scsi_device *sdev, int depth)
 }
 EXPORT_SYMBOL_GPL(iscsi_change_queue_depth);
 
-static struct iscsi_mgmt_task *
-__iscsi_conn_send_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
-                      char *data, uint32_t data_size)
-{
-        struct iscsi_session *session = conn->session;
-        struct iscsi_mgmt_task *mtask;
-
-        if (session->state == ISCSI_STATE_TERMINATE)
-                return NULL;
-
-        if (hdr->opcode == (ISCSI_OP_LOGIN | ISCSI_OP_IMMEDIATE) ||
-            hdr->opcode == (ISCSI_OP_TEXT | ISCSI_OP_IMMEDIATE))
-                /*
-                 * Login and Text are sent serially, in
-                 * request-followed-by-response sequence.
-                 * Same mtask can be used. Same ITT must be used.
-                 * Note that login_mtask is preallocated at conn_create().
-                 */
-                mtask = conn->login_mtask;
-        else {
-                BUG_ON(conn->c_stage == ISCSI_CONN_INITIAL_STAGE);
-                BUG_ON(conn->c_stage == ISCSI_CONN_STOPPED);
-
-                if (!__kfifo_get(session->mgmtpool.queue,
-                                 (void*)&mtask, sizeof(void*)))
-                        return NULL;
-        }
-
-        if (data_size) {
-                memcpy(mtask->data, data, data_size);
-                mtask->data_count = data_size;
-        } else
-                mtask->data_count = 0;
-
-        INIT_LIST_HEAD(&mtask->running);
-        memcpy(mtask->hdr, hdr, sizeof(struct iscsi_hdr));
-        __kfifo_put(conn->mgmtqueue, (void*)&mtask, sizeof(void*));
-        return mtask;
-}
-
-int iscsi_conn_send_pdu(struct iscsi_cls_conn *cls_conn, struct iscsi_hdr *hdr,
-                        char *data, uint32_t data_size)
-{
-        struct iscsi_conn *conn = cls_conn->dd_data;
-        struct iscsi_session *session = conn->session;
-        int err = 0;
-
-        spin_lock_bh(&session->lock);
-        if (!__iscsi_conn_send_pdu(conn, hdr, data, data_size))
-                err = -EPERM;
-        spin_unlock_bh(&session->lock);
-        scsi_queue_work(session->host, &conn->xmitwork);
-        return err;
-}
-EXPORT_SYMBOL_GPL(iscsi_conn_send_pdu);
-
 void iscsi_session_recovery_timedout(struct iscsi_cls_session *cls_session)
 {
         struct iscsi_session *session = class_to_transport_session(cls_session);
-        struct iscsi_conn *conn = session->leadconn;
 
         spin_lock_bh(&session->lock);
         if (session->state != ISCSI_STATE_LOGGED_IN) {
                 session->state = ISCSI_STATE_RECOVERY_FAILED;
-                if (conn)
-                        wake_up(&conn->ehwait);
+                if (session->leadconn)
+                        wake_up(&session->leadconn->ehwait);
         }
         spin_unlock_bh(&session->lock);
 }
@@ -971,30 +1129,25 @@ int iscsi_eh_host_reset(struct scsi_cmnd *sc)
         struct Scsi_Host *host = sc->device->host;
         struct iscsi_session *session = iscsi_hostdata(host->hostdata);
         struct iscsi_conn *conn = session->leadconn;
-        int fail_session = 0;
 
+        mutex_lock(&session->eh_mutex);
         spin_lock_bh(&session->lock);
         if (session->state == ISCSI_STATE_TERMINATE) {
 failed:
                 debug_scsi("failing host reset: session terminated "
                            "[CID %d age %d]\n", conn->id, session->age);
                 spin_unlock_bh(&session->lock);
+                mutex_unlock(&session->eh_mutex);
                 return FAILED;
         }
 
-        if (sc->SCp.phase == session->age) {
-                debug_scsi("failing connection CID %d due to SCSI host reset\n",
-                           conn->id);
-                fail_session = 1;
-        }
         spin_unlock_bh(&session->lock);
-
+        mutex_unlock(&session->eh_mutex);
         /*
          * we drop the lock here but the leadconn cannot be destoyed while
          * we are in the scsi eh
          */
-        if (fail_session)
-                iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
+        iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
 
         debug_scsi("iscsi_eh_host_reset wait for relogin\n");
         wait_event_interruptible(conn->ehwait,
@@ -1004,73 +1157,56 @@ failed:
         if (signal_pending(current))
                 flush_signals(current);
 
+        mutex_lock(&session->eh_mutex);
         spin_lock_bh(&session->lock);
         if (session->state == ISCSI_STATE_LOGGED_IN)
                 printk(KERN_INFO "iscsi: host reset succeeded\n");
         else
                 goto failed;
         spin_unlock_bh(&session->lock);
-
+        mutex_unlock(&session->eh_mutex);
         return SUCCESS;
 }
 EXPORT_SYMBOL_GPL(iscsi_eh_host_reset);
 
-static void iscsi_tmabort_timedout(unsigned long data)
+static void iscsi_tmf_timedout(unsigned long data)
 {
-        struct iscsi_cmd_task *ctask = (struct iscsi_cmd_task *)data;
-        struct iscsi_conn *conn = ctask->conn;
+        struct iscsi_conn *conn = (struct iscsi_conn *)data;
         struct iscsi_session *session = conn->session;
 
         spin_lock(&session->lock);
-        if (conn->tmabort_state == TMABORT_INITIAL) {
-                conn->tmabort_state = TMABORT_TIMEDOUT;
-                debug_scsi("tmabort timedout [sc %p itt 0x%x]\n",
-                        ctask->sc, ctask->itt);
+        if (conn->tmf_state == TMF_QUEUED) {
+                conn->tmf_state = TMF_TIMEDOUT;
+                debug_scsi("tmf timedout\n");
                 /* unblock eh_abort() */
                 wake_up(&conn->ehwait);
         }
         spin_unlock(&session->lock);
 }
 
-static int iscsi_exec_abort_task(struct scsi_cmnd *sc,
-                                 struct iscsi_cmd_task *ctask)
+static int iscsi_exec_task_mgmt_fn(struct iscsi_conn *conn,
+                                   struct iscsi_tm *hdr, int age,
+                                   int timeout)
 {
-        struct iscsi_conn *conn = ctask->conn;
         struct iscsi_session *session = conn->session;
-        struct iscsi_tm *hdr = &conn->tmhdr;
-
-        /*
-         * ctask timed out but session is OK requests must be serialized.
-         */
-        memset(hdr, 0, sizeof(struct iscsi_tm));
-        hdr->opcode = ISCSI_OP_SCSI_TMFUNC | ISCSI_OP_IMMEDIATE;
-        hdr->flags = ISCSI_TM_FUNC_ABORT_TASK;
-        hdr->flags |= ISCSI_FLAG_CMD_FINAL;
-        memcpy(hdr->lun, ctask->hdr->lun, sizeof(hdr->lun));
-        hdr->rtt = ctask->hdr->itt;
-        hdr->refcmdsn = ctask->hdr->cmdsn;
+        struct iscsi_mgmt_task *mtask;
 
-        ctask->mtask = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)hdr,
-                                            NULL, 0);
-        if (!ctask->mtask) {
+        mtask = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)hdr,
+                                      NULL, 0);
+        if (!mtask) {
                 spin_unlock_bh(&session->lock);
                 iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
-                spin_lock_bh(&session->lock)
-                debug_scsi("abort sent failure [itt 0x%x]\n", ctask->itt);
+                spin_lock_bh(&session->lock);
+                debug_scsi("tmf exec failure\n");
                 return -EPERM;
         }
-        ctask->state = ISCSI_TASK_ABORTING;
+        conn->tmfcmd_pdus_cnt++;
+        conn->tmf_timer.expires = timeout * HZ + jiffies;
+        conn->tmf_timer.function = iscsi_tmf_timedout;
+        conn->tmf_timer.data = (unsigned long)conn;
+        add_timer(&conn->tmf_timer);
+        debug_scsi("tmf set timeout\n");
 
-        debug_scsi("abort sent [itt 0x%x]\n", ctask->itt);
-
-        if (conn->tmabort_state == TMABORT_INITIAL) {
-                conn->tmfcmd_pdus_cnt++;
-                conn->tmabort_timer.expires = 20*HZ + jiffies;
-                conn->tmabort_timer.function = iscsi_tmabort_timedout;
-                conn->tmabort_timer.data = (unsigned long)ctask;
-                add_timer(&conn->tmabort_timer);
-                debug_scsi("abort set timeout [itt 0x%x]\n", ctask->itt);
-        }
         spin_unlock_bh(&session->lock);
         mutex_unlock(&session->eh_mutex);
         scsi_queue_work(session->host, &conn->xmitwork);
@@ -1078,113 +1214,197 @@ static int iscsi_exec_abort_task(struct scsi_cmnd *sc,
         /*
          * block eh thread until:
          *
-         * 1) abort response
-         * 2) abort timeout
+         * 1) tmf response
+         * 2) tmf timeout
          * 3) session is terminated or restarted or userspace has
          * given up on recovery
          */
-        wait_event_interruptible(conn->ehwait,
-                                 sc->SCp.phase != session->age ||
+        wait_event_interruptible(conn->ehwait, age != session->age ||
                                  session->state != ISCSI_STATE_LOGGED_IN ||
-                                 conn->tmabort_state != TMABORT_INITIAL);
+                                 conn->tmf_state != TMF_QUEUED);
         if (signal_pending(current))
                 flush_signals(current);
-        del_timer_sync(&conn->tmabort_timer);
+        del_timer_sync(&conn->tmf_timer);
+
         mutex_lock(&session->eh_mutex);
         spin_lock_bh(&session->lock);
+        /* if the session drops it will clean up the mtask */
+        if (age != session->age ||
+            session->state != ISCSI_STATE_LOGGED_IN)
+                return -ENOTCONN;
         return 0;
 }
 
 /*
- * session lock must be held
+ * Fail commands. session lock held and recv side suspended and xmit
+ * thread flushed
  */
-static struct iscsi_mgmt_task *
-iscsi_remove_mgmt_task(struct kfifo *fifo, uint32_t itt)
+static void fail_all_commands(struct iscsi_conn *conn, unsigned lun)
 {
-        int i, nr_tasks = __kfifo_len(fifo) / sizeof(void*);
-        struct iscsi_mgmt_task *task;
+        struct iscsi_cmd_task *ctask, *tmp;
 
-        debug_scsi("searching %d tasks\n", nr_tasks);
+        if (conn->ctask && (conn->ctask->sc->device->lun == lun || lun == -1))
+                conn->ctask = NULL;
 
-        for (i = 0; i < nr_tasks; i++) {
-                __kfifo_get(fifo, (void*)&task, sizeof(void*));
-                debug_scsi("check task %u\n", task->itt);
+        /* flush pending */
+        list_for_each_entry_safe(ctask, tmp, &conn->xmitqueue, running) {
+                if (lun == ctask->sc->device->lun || lun == -1) {
+                        debug_scsi("failing pending sc %p itt 0x%x\n",
+                                   ctask->sc, ctask->itt);
+                        fail_command(conn, ctask, DID_BUS_BUSY << 16);
+                }
+        }
 
-                if (task->itt == itt) {
-                        debug_scsi("matched task\n");
-                        return task;
+        list_for_each_entry_safe(ctask, tmp, &conn->requeue, running) {
+                if (lun == ctask->sc->device->lun || lun == -1) {
+                        debug_scsi("failing requeued sc %p itt 0x%x\n",
+                                   ctask->sc, ctask->itt);
+                        fail_command(conn, ctask, DID_BUS_BUSY << 16);
                 }
+        }
 
-                __kfifo_put(fifo, (void*)&task, sizeof(void*));
+        /* fail all other running */
+        list_for_each_entry_safe(ctask, tmp, &conn->run_list, running) {
+                if (lun == ctask->sc->device->lun || lun == -1) {
+                        debug_scsi("failing in progress sc %p itt 0x%x\n",
+                                   ctask->sc, ctask->itt);
+                        fail_command(conn, ctask, DID_BUS_BUSY << 16);
+                }
         }
-        return NULL;
 }
 
-static int iscsi_ctask_mtask_cleanup(struct iscsi_cmd_task *ctask)
+static void iscsi_suspend_tx(struct iscsi_conn *conn)
 {
-        struct iscsi_conn *conn = ctask->conn;
-        struct iscsi_session *session = conn->session;
-
-        if (!ctask->mtask)
-                return -EINVAL;
+        set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
+        scsi_flush_work(conn->session->host);
+}
 
-        if (!iscsi_remove_mgmt_task(conn->mgmtqueue, ctask->mtask->itt))
-                list_del(&ctask->mtask->running);
-        __kfifo_put(session->mgmtpool.queue, (void*)&ctask->mtask,
-                    sizeof(void*));
-        ctask->mtask = NULL;
-        return 0;
+static void iscsi_start_tx(struct iscsi_conn *conn)
+{
+        clear_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
+        scsi_queue_work(conn->session->host, &conn->xmitwork);
 }
 
-/*
- * session lock must be held
- */
-static void fail_command(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask,
-                         int err)
+static enum scsi_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *scmd)
 {
-        struct scsi_cmnd *sc;
+        struct iscsi_cls_session *cls_session;
+        struct iscsi_session *session;
+        struct iscsi_conn *conn;
+        enum scsi_eh_timer_return rc = EH_NOT_HANDLED;
 
-        sc = ctask->sc;
-        if (!sc)
-                return;
+        cls_session = starget_to_session(scsi_target(scmd->device));
+        session = class_to_transport_session(cls_session);
 
-        if (ctask->state == ISCSI_TASK_PENDING)
+        debug_scsi("scsi cmd %p timedout\n", scmd);
+
+        spin_lock(&session->lock);
+        if (session->state != ISCSI_STATE_LOGGED_IN) {
                 /*
-                 * cmd never made it to the xmit thread, so we should not count
-                 * the cmd in the sequencing
+                 * We are probably in the middle of iscsi recovery so let
+                 * that complete and handle the error.
                  */
-                conn->session->queued_cmdsn--;
-        else
-                conn->session->tt->cleanup_cmd_task(conn, ctask);
-        iscsi_ctask_mtask_cleanup(ctask);
+                rc = EH_RESET_TIMER;
+                goto done;
+        }
 
-        sc->result = err;
-        scsi_set_resid(sc, scsi_bufflen(sc));
-        if (conn->ctask == ctask)
-                conn->ctask = NULL;
-        /* release ref from queuecommand */
-        __iscsi_put_ctask(ctask);
+        conn = session->leadconn;
+        if (!conn) {
+                /* In the middle of shuting down */
+                rc = EH_RESET_TIMER;
+                goto done;
+        }
+
+        if (!conn->recv_timeout && !conn->ping_timeout)
+                goto done;
+        /*
+         * if the ping timedout then we are in the middle of cleaning up
+         * and can let the iscsi eh handle it
+         */
+        if (time_before_eq(conn->last_recv + (conn->recv_timeout * HZ) +
+                            (conn->ping_timeout * HZ), jiffies))
+                rc = EH_RESET_TIMER;
+        /*
+         * if we are about to check the transport then give the command
+         * more time
+         */
+        if (time_before_eq(conn->last_recv + (conn->recv_timeout * HZ),
+                           jiffies))
+                rc = EH_RESET_TIMER;
+        /* if in the middle of checking the transport then give us more time */
+        if (conn->ping_mtask)
+                rc = EH_RESET_TIMER;
+done:
+        spin_unlock(&session->lock);
+        debug_scsi("return %s\n", rc == EH_RESET_TIMER ? "timer reset" : "nh");
+        return rc;
 }
 
-static void iscsi_suspend_tx(struct iscsi_conn *conn)
+static void iscsi_check_transport_timeouts(unsigned long data)
 {
-        set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
-        scsi_flush_work(conn->session->host);
+        struct iscsi_conn *conn = (struct iscsi_conn *)data;
+        struct iscsi_session *session = conn->session;
+        unsigned long timeout, next_timeout = 0, last_recv;
+
+        spin_lock(&session->lock);
+        if (session->state != ISCSI_STATE_LOGGED_IN)
+                goto done;
+
+        timeout = conn->recv_timeout;
+        if (!timeout)
+                goto done;
+
+        timeout *= HZ;
+        last_recv = conn->last_recv;
+        if (time_before_eq(last_recv + timeout + (conn->ping_timeout * HZ),
+                           jiffies)) {
+                printk(KERN_ERR "ping timeout of %d secs expired, "
+                       "last rx %lu, last ping %lu, now %lu\n",
+                       conn->ping_timeout, last_recv,
+                       conn->last_ping, jiffies);
+                spin_unlock(&session->lock);
+                iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
+                return;
+        }
+
+        if (time_before_eq(last_recv + timeout, jiffies)) {
+                if (time_before_eq(conn->last_ping, last_recv)) {
+                        /* send a ping to try to provoke some traffic */
+                        debug_scsi("Sending nopout as ping on conn %p\n", conn);
+                        iscsi_send_nopout(conn, NULL);
+                }
+                next_timeout = last_recv + timeout + (conn->ping_timeout * HZ);
+        } else {
+                next_timeout = last_recv + timeout;
+        }
+
+        if (next_timeout) {
+                debug_scsi("Setting next tmo %lu\n", next_timeout);
+                mod_timer(&conn->transport_timer, next_timeout);
+        }
+done:
+        spin_unlock(&session->lock);
 }
 
-static void iscsi_start_tx(struct iscsi_conn *conn)
+static void iscsi_prep_abort_task_pdu(struct iscsi_cmd_task *ctask,
+                                      struct iscsi_tm *hdr)
 {
-        clear_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
-        scsi_queue_work(conn->session->host, &conn->xmitwork);
+        memset(hdr, 0, sizeof(*hdr));
+        hdr->opcode = ISCSI_OP_SCSI_TMFUNC | ISCSI_OP_IMMEDIATE;
+        hdr->flags = ISCSI_TM_FUNC_ABORT_TASK & ISCSI_FLAG_TM_FUNC_MASK;
+        hdr->flags |= ISCSI_FLAG_CMD_FINAL;
+        memcpy(hdr->lun, ctask->hdr->lun, sizeof(hdr->lun));
+        hdr->rtt = ctask->hdr->itt;
+        hdr->refcmdsn = ctask->hdr->cmdsn;
 }
 
 int iscsi_eh_abort(struct scsi_cmnd *sc)
 {
         struct Scsi_Host *host = sc->device->host;
         struct iscsi_session *session = iscsi_hostdata(host->hostdata);
-        struct iscsi_cmd_task *ctask;
         struct iscsi_conn *conn;
-        int rc;
+        struct iscsi_cmd_task *ctask;
+        struct iscsi_tm *hdr;
+        int rc, age;
 
         mutex_lock(&session->eh_mutex);
         spin_lock_bh(&session->lock);
@@ -1199,19 +1419,23 @@ int iscsi_eh_abort(struct scsi_cmnd *sc)
                 return SUCCESS;
         }
 
-        ctask = (struct iscsi_cmd_task *)sc->SCp.ptr;
-        conn = ctask->conn;
-
-        conn->eh_abort_cnt++;
-        debug_scsi("aborting [sc %p itt 0x%x]\n", sc, ctask->itt);
-
         /*
          * If we are not logged in or we have started a new session
          * then let the host reset code handle this
          */
-        if (session->state != ISCSI_STATE_LOGGED_IN ||
-            sc->SCp.phase != session->age)
-                goto failed;
+        if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN ||
+            sc->SCp.phase != session->age) {
+                spin_unlock_bh(&session->lock);
+                mutex_unlock(&session->eh_mutex);
+                return FAILED;
+        }
+
+        conn = session->leadconn;
+        conn->eh_abort_cnt++;
+        age = session->age;
+
+        ctask = (struct iscsi_cmd_task *)sc->SCp.ptr;
+        debug_scsi("aborting [sc %p itt 0x%x]\n", sc, ctask->itt);
 
         /* ctask completed before time out */
         if (!ctask->sc) {
@@ -1219,27 +1443,26 @@ int iscsi_eh_abort(struct scsi_cmnd *sc)
                 goto success;
         }
 
-        /* what should we do here ? */
-        if (conn->ctask == ctask) {
-                printk(KERN_INFO "iscsi: sc %p itt 0x%x partially sent. "
-                       "Failing abort\n", sc, ctask->itt);
-                goto failed;
-        }
-
         if (ctask->state == ISCSI_TASK_PENDING) {
                 fail_command(conn, ctask, DID_ABORT << 16);
                 goto success;
         }
 
-        conn->tmabort_state = TMABORT_INITIAL;
-        rc = iscsi_exec_abort_task(sc, ctask);
-        if (rc || sc->SCp.phase != session->age ||
-            session->state != ISCSI_STATE_LOGGED_IN)
+        /* only have one tmf outstanding at a time */
+        if (conn->tmf_state != TMF_INITIAL)
+                goto failed;
+        conn->tmf_state = TMF_QUEUED;
+
+        hdr = &conn->tmhdr;
+        iscsi_prep_abort_task_pdu(ctask, hdr);
+
+        if (iscsi_exec_task_mgmt_fn(conn, hdr, age, session->abort_timeout)) {
+                rc = FAILED;
                 goto failed;
-        iscsi_ctask_mtask_cleanup(ctask);
+        }
 
-        switch (conn->tmabort_state) {
-        case TMABORT_SUCCESS:
+        switch (conn->tmf_state) {
+        case TMF_SUCCESS:
                 spin_unlock_bh(&session->lock);
                 iscsi_suspend_tx(conn);
                 /*
@@ -1248,22 +1471,26 @@ int iscsi_eh_abort(struct scsi_cmnd *sc)
                 write_lock_bh(conn->recv_lock);
                 spin_lock(&session->lock);
                 fail_command(conn, ctask, DID_ABORT << 16);
+                conn->tmf_state = TMF_INITIAL;
                 spin_unlock(&session->lock);
                 write_unlock_bh(conn->recv_lock);
                 iscsi_start_tx(conn);
                 goto success_unlocked;
-        case TMABORT_NOT_FOUND:
-                if (!ctask->sc) {
+        case TMF_TIMEDOUT:
+                spin_unlock_bh(&session->lock);
+                iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
+                goto failed_unlocked;
+        case TMF_NOT_FOUND:
+                if (!sc->SCp.ptr) {
+                        conn->tmf_state = TMF_INITIAL;
                         /* ctask completed before tmf abort response */
                         debug_scsi("sc completed while abort in progress\n");
                         goto success;
                 }
                 /* fall through */
         default:
-                /* timedout or failed */
-                spin_unlock_bh(&session->lock);
-                iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
-                goto failed_unlocked;
+                conn->tmf_state = TMF_INITIAL;
+                goto failed;
         }
 
 success:
@@ -1276,65 +1503,152 @@ success_unlocked:
 failed:
         spin_unlock_bh(&session->lock);
 failed_unlocked:
-        debug_scsi("abort failed [sc %lx itt 0x%x]\n", (long)sc, ctask->itt);
+        debug_scsi("abort failed [sc %p itt 0x%x]\n", sc,
+                    ctask ? ctask->itt : 0);
         mutex_unlock(&session->eh_mutex);
         return FAILED;
 }
 EXPORT_SYMBOL_GPL(iscsi_eh_abort);
 
+static void iscsi_prep_lun_reset_pdu(struct scsi_cmnd *sc, struct iscsi_tm *hdr)
+{
+        memset(hdr, 0, sizeof(*hdr));
+        hdr->opcode = ISCSI_OP_SCSI_TMFUNC | ISCSI_OP_IMMEDIATE;
+        hdr->flags = ISCSI_TM_FUNC_LOGICAL_UNIT_RESET & ISCSI_FLAG_TM_FUNC_MASK;
+        hdr->flags |= ISCSI_FLAG_CMD_FINAL;
+        int_to_scsilun(sc->device->lun, (struct scsi_lun *)hdr->lun);
+        hdr->rtt = RESERVED_ITT;
+}
+
+int iscsi_eh_device_reset(struct scsi_cmnd *sc)
+{
+        struct Scsi_Host *host = sc->device->host;
+        struct iscsi_session *session = iscsi_hostdata(host->hostdata);
+        struct iscsi_conn *conn;
+        struct iscsi_tm *hdr;
+        int rc = FAILED;
+
+        debug_scsi("LU Reset [sc %p lun %u]\n", sc, sc->device->lun);
+
+        mutex_lock(&session->eh_mutex);
+        spin_lock_bh(&session->lock);
+        /*
+         * Just check if we are not logged in. We cannot check for
+         * the phase because the reset could come from a ioctl.
+         */
+        if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN)
+                goto unlock;
+        conn = session->leadconn;
+
+        /* only have one tmf outstanding at a time */
+        if (conn->tmf_state != TMF_INITIAL)
+                goto unlock;
+        conn->tmf_state = TMF_QUEUED;
+
+        hdr = &conn->tmhdr;
+        iscsi_prep_lun_reset_pdu(sc, hdr);
+
+        if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age,
+                                    session->lu_reset_timeout)) {
+                rc = FAILED;
+                goto unlock;
+        }
+
+        switch (conn->tmf_state) {
+        case TMF_SUCCESS:
+                break;
+        case TMF_TIMEDOUT:
+                spin_unlock_bh(&session->lock);
+                iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
+                goto done;
+        default:
+                conn->tmf_state = TMF_INITIAL;
+                goto unlock;
+        }
+
+        rc = SUCCESS;
+        spin_unlock_bh(&session->lock);
+
+        iscsi_suspend_tx(conn);
+        /* need to grab the recv lock then session lock */
+        write_lock_bh(conn->recv_lock);
+        spin_lock(&session->lock);
+        fail_all_commands(conn, sc->device->lun);
+        conn->tmf_state = TMF_INITIAL;
+        spin_unlock(&session->lock);
+        write_unlock_bh(conn->recv_lock);
+
+        iscsi_start_tx(conn);
+        goto done;
+
+unlock:
+        spin_unlock_bh(&session->lock);
+done:
+        debug_scsi("iscsi_eh_device_reset %s\n",
+                  rc == SUCCESS ? "SUCCESS" : "FAILED");
+        mutex_unlock(&session->eh_mutex);
+        return rc;
+}
+EXPORT_SYMBOL_GPL(iscsi_eh_device_reset);
+
+/*
+ * Pre-allocate a pool of @max items of @item_size. By default, the pool
+ * should be accessed via kfifo_{get,put} on q->queue.
+ * Optionally, the caller can obtain the array of object pointers
+ * by passing in a non-NULL @items pointer
+ */
 int
-iscsi_pool_init(struct iscsi_queue *q, int max, void ***items, int item_size)
+iscsi_pool_init(struct iscsi_pool *q, int max, void ***items, int item_size)
 {
-        int i;
+        int i, num_arrays = 1;
 
-        *items = kmalloc(max * sizeof(void*), GFP_KERNEL);
-        if (*items == NULL)
-                return -ENOMEM;
+        memset(q, 0, sizeof(*q));
 
         q->max = max;
-        q->pool = kmalloc(max * sizeof(void*), GFP_KERNEL);
-        if (q->pool == NULL) {
-                kfree(*items);
-                return -ENOMEM;
-        }
+
+        /* If the user passed an items pointer, he wants a copy of
+         * the array. */
+        if (items)
+                num_arrays++;
+        q->pool = kzalloc(num_arrays * max * sizeof(void*), GFP_KERNEL);
+        if (q->pool == NULL)
+                goto enomem;
 
         q->queue = kfifo_init((void*)q->pool, max * sizeof(void*),
                               GFP_KERNEL, NULL);
-        if (q->queue == ERR_PTR(-ENOMEM)) {
-                kfree(q->pool);
-                kfree(*items);
-                return -ENOMEM;
-        }
+        if (q->queue == ERR_PTR(-ENOMEM))
+                goto enomem;
 
         for (i = 0; i < max; i++) {
-                q->pool[i] = kmalloc(item_size, GFP_KERNEL);
+                q->pool[i] = kzalloc(item_size, GFP_KERNEL);
                 if (q->pool[i] == NULL) {
-                        int j;
-
-                        for (j = 0; j < i; j++)
-                                kfree(q->pool[j]);
-
-                        kfifo_free(q->queue);
-                        kfree(q->pool);
-                        kfree(*items);
-                        return -ENOMEM;
+                        q->max = i;
+                        goto enomem;
                 }
-                memset(q->pool[i], 0, item_size);
-                (*items)[i] = q->pool[i];
                 __kfifo_put(q->queue, (void*)&q->pool[i], sizeof(void*));
         }
+
+        if (items) {
+                *items = q->pool + max;
+                memcpy(*items, q->pool, max * sizeof(void *));
+        }
+
         return 0;
+
+enomem:
+        iscsi_pool_free(q);
+        return -ENOMEM;
 }
 EXPORT_SYMBOL_GPL(iscsi_pool_init);
 
-void iscsi_pool_free(struct iscsi_queue *q, void **items)
+void iscsi_pool_free(struct iscsi_pool *q)
 {
         int i;
 
         for (i = 0; i < q->max; i++)
-                kfree(items[i]);
-        kfree(q->pool);
-        kfree(items);
+                kfree(q->pool[i]);
+        if (q->pool)
+                kfree(q->pool);
 }
 EXPORT_SYMBOL_GPL(iscsi_pool_free);
 
@@ -1387,7 +1701,7 @@ iscsi_session_setup(struct iscsi_transport *iscsit,
                 qdepth = ISCSI_DEF_CMD_PER_LUN;
         }
 
-        if (cmds_max < 2 || (cmds_max & (cmds_max - 1)) ||
+        if (!is_power_of_2(cmds_max) ||
             cmds_max >= ISCSI_MGMT_ITT_OFFSET) {
                 if (cmds_max != 0)
                         printk(KERN_ERR "iscsi: invalid can_queue of %d. "
@@ -1411,12 +1725,16 @@ iscsi_session_setup(struct iscsi_transport *iscsit,
         shost->max_cmd_len = iscsit->max_cmd_len;
         shost->transportt = scsit;
         shost->transportt->create_work_queue = 1;
+        shost->transportt->eh_timed_out = iscsi_eh_cmd_timed_out;
         *hostno = shost->host_no;
 
         session = iscsi_hostdata(shost->hostdata);
         memset(session, 0, sizeof(struct iscsi_session));
         session->host = shost;
         session->state = ISCSI_STATE_FREE;
+        session->fast_abort = 1;
+        session->lu_reset_timeout = 15;
+        session->abort_timeout = 10;
         session->mgmtpool_max = ISCSI_MGMT_CMDS_MAX;
         session->cmds_max = cmds_max;
         session->queued_cmdsn = session->cmdsn = initial_cmdsn;
@@ -1479,9 +1797,9 @@ module_put:
 cls_session_fail:
         scsi_remove_host(shost);
 add_host_fail:
-        iscsi_pool_free(&session->mgmtpool, (void**)session->mgmt_cmds);
+        iscsi_pool_free(&session->mgmtpool);
 mgmtpool_alloc_fail:
-        iscsi_pool_free(&session->cmdpool, (void**)session->cmds);
+        iscsi_pool_free(&session->cmdpool);
 cmdpool_alloc_fail:
         scsi_host_put(shost);
         return NULL;
@@ -1501,11 +1819,11 @@ void iscsi_session_teardown(struct iscsi_cls_session *cls_session)
         struct iscsi_session *session = iscsi_hostdata(shost->hostdata);
         struct module *owner = cls_session->transport->owner;
 
-        iscsi_unblock_session(cls_session);
+        iscsi_remove_session(cls_session);
         scsi_remove_host(shost);
 
-        iscsi_pool_free(&session->mgmtpool, (void**)session->mgmt_cmds);
-        iscsi_pool_free(&session->cmdpool, (void**)session->cmds);
+        iscsi_pool_free(&session->mgmtpool);
+        iscsi_pool_free(&session->cmdpool);
 
         kfree(session->password);
         kfree(session->password_in);
@@ -1516,7 +1834,7 @@ void iscsi_session_teardown(struct iscsi_cls_session *cls_session)
         kfree(session->hwaddress);
         kfree(session->initiatorname);
 
-        iscsi_destroy_session(cls_session);
+        iscsi_free_session(cls_session);
         scsi_host_put(shost);
         module_put(owner);
 }
@@ -1546,17 +1864,17 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
         conn->c_stage = ISCSI_CONN_INITIAL_STAGE;
         conn->id = conn_idx;
         conn->exp_statsn = 0;
-        conn->tmabort_state = TMABORT_INITIAL;
+        conn->tmf_state = TMF_INITIAL;
+
+        init_timer(&conn->transport_timer);
+        conn->transport_timer.data = (unsigned long)conn;
+        conn->transport_timer.function = iscsi_check_transport_timeouts;
+
         INIT_LIST_HEAD(&conn->run_list);
         INIT_LIST_HEAD(&conn->mgmt_run_list);
+        INIT_LIST_HEAD(&conn->mgmtqueue);
         INIT_LIST_HEAD(&conn->xmitqueue);
-
-        /* initialize general immediate & non-immediate PDU commands queue */
-        conn->mgmtqueue = kfifo_alloc(session->mgmtpool_max * sizeof(void*),
-                                        GFP_KERNEL, NULL);
-        if (conn->mgmtqueue == ERR_PTR(-ENOMEM))
-                goto mgmtqueue_alloc_fail;
-
+        INIT_LIST_HEAD(&conn->requeue);
         INIT_WORK(&conn->xmitwork, iscsi_xmitworker);
 
         /* allocate login_mtask used for the login/text sequences */
@@ -1574,7 +1892,7 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
                 goto login_mtask_data_alloc_fail;
         conn->login_mtask->data = conn->data = data;
 
-        init_timer(&conn->tmabort_timer);
+        init_timer(&conn->tmf_timer);
         init_waitqueue_head(&conn->ehwait);
 
         return cls_conn;
@@ -1583,8 +1901,6 @@ login_mtask_data_alloc_fail:
         __kfifo_put(session->mgmtpool.queue, (void*)&conn->login_mtask,
                     sizeof(void*));
 login_mtask_alloc_fail:
-        kfifo_free(conn->mgmtqueue);
-mgmtqueue_alloc_fail:
         iscsi_destroy_conn(cls_conn);
         return NULL;
 }
@@ -1603,8 +1919,9 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
         struct iscsi_session *session = conn->session;
         unsigned long flags;
 
+        del_timer_sync(&conn->transport_timer);
+
         spin_lock_bh(&session->lock);
-        set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
         conn->c_stage = ISCSI_CONN_CLEANUP_WAIT;
         if (session->leadconn == conn) {
                 /*
@@ -1637,7 +1954,7 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
         }
 
         /* flush queued up work because we free the connection below */
-        scsi_flush_work(session->host);
+        iscsi_suspend_tx(conn);
 
         spin_lock_bh(&session->lock);
         kfree(conn->data);
@@ -1648,8 +1965,6 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
                 session->leadconn = NULL;
         spin_unlock_bh(&session->lock);
 
-        kfifo_free(conn->mgmtqueue);
-
         iscsi_destroy_conn(cls_conn);
 }
 EXPORT_SYMBOL_GPL(iscsi_conn_teardown);
@@ -1672,11 +1987,29 @@ int iscsi_conn_start(struct iscsi_cls_conn *cls_conn)
                 return -EINVAL;
         }
 
+        if (conn->ping_timeout && !conn->recv_timeout) {
+                printk(KERN_ERR "iscsi: invalid recv timeout of zero "
+                      "Using 5 seconds\n.");
+                conn->recv_timeout = 5;
+        }
+
+        if (conn->recv_timeout && !conn->ping_timeout) {
+                printk(KERN_ERR "iscsi: invalid ping timeout of zero "
+                      "Using 5 seconds.\n");
+                conn->ping_timeout = 5;
+        }
+
         spin_lock_bh(&session->lock);
         conn->c_stage = ISCSI_CONN_STARTED;
         session->state = ISCSI_STATE_LOGGED_IN;
         session->queued_cmdsn = session->cmdsn;
 
+        conn->last_recv = jiffies;
+        conn->last_ping = jiffies;
+        if (conn->recv_timeout && conn->ping_timeout)
+                mod_timer(&conn->transport_timer,
+                          jiffies + (conn->recv_timeout * HZ));
+
         switch(conn->stop_stage) {
         case STOP_CONN_RECOVER:
                 /*
@@ -1684,7 +2017,7 @@ int iscsi_conn_start(struct iscsi_cls_conn *cls_conn)
                  * commands after successful recovery
                  */
                 conn->stop_stage = 0;
-                conn->tmabort_state = TMABORT_INITIAL;
+                conn->tmf_state = TMF_INITIAL;
                 session->age++;
                 spin_unlock_bh(&session->lock);
 
@@ -1709,55 +2042,27 @@ flush_control_queues(struct iscsi_session *session, struct iscsi_conn *conn)
         struct iscsi_mgmt_task *mtask, *tmp;
 
         /* handle pending */
-        while (__kfifo_get(conn->mgmtqueue, (void*)&mtask, sizeof(void*))) {
-                if (mtask == conn->login_mtask)
-                        continue;
+        list_for_each_entry_safe(mtask, tmp, &conn->mgmtqueue, running) {
                 debug_scsi("flushing pending mgmt task itt 0x%x\n", mtask->itt);
-                __kfifo_put(session->mgmtpool.queue, (void*)&mtask,
-                            sizeof(void*));
+                iscsi_free_mgmt_task(conn, mtask);
         }
 
         /* handle running */
         list_for_each_entry_safe(mtask, tmp, &conn->mgmt_run_list, running) {
                 debug_scsi("flushing running mgmt task itt 0x%x\n", mtask->itt);
-                list_del(&mtask->running);
-
-                if (mtask == conn->login_mtask)
-                        continue;
-                __kfifo_put(session->mgmtpool.queue, (void*)&mtask,
-                           sizeof(void*));
+                iscsi_free_mgmt_task(conn, mtask);
         }
 
         conn->mtask = NULL;
 }
 
-/* Fail commands. Mutex and session lock held and recv side suspended */
-static void fail_all_commands(struct iscsi_conn *conn)
-{
-        struct iscsi_cmd_task *ctask, *tmp;
-
-        /* flush pending */
-        list_for_each_entry_safe(ctask, tmp, &conn->xmitqueue, running) {
-                debug_scsi("failing pending sc %p itt 0x%x\n", ctask->sc,
-                           ctask->itt);
-                fail_command(conn, ctask, DID_BUS_BUSY << 16);
-        }
-
-        /* fail all other running */
-        list_for_each_entry_safe(ctask, tmp, &conn->run_list, running) {
-                debug_scsi("failing in progress sc %p itt 0x%x\n",
-                           ctask->sc, ctask->itt);
-                fail_command(conn, ctask, DID_BUS_BUSY << 16);
-        }
-
-        conn->ctask = NULL;
-}
-
 static void iscsi_start_session_recovery(struct iscsi_session *session,
                                          struct iscsi_conn *conn, int flag)
 {
         int old_stop_stage;
 
+        del_timer_sync(&conn->transport_timer);
+
         mutex_lock(&session->eh_mutex);
         spin_lock_bh(&session->lock);
         if (conn->stop_stage == STOP_CONN_TERM) {
@@ -1818,7 +2123,7 @@ static void iscsi_start_session_recovery(struct iscsi_session *session,
          * flush queues.
          */
         spin_lock_bh(&session->lock);
-        fail_all_commands(conn);
+        fail_all_commands(conn, -1);
         flush_control_queues(session, conn);
         spin_unlock_bh(&session->lock);
         mutex_unlock(&session->eh_mutex);
@@ -1869,6 +2174,21 @@ int iscsi_set_param(struct iscsi_cls_conn *cls_conn,
         uint32_t value;
 
         switch(param) {
+        case ISCSI_PARAM_FAST_ABORT:
+                sscanf(buf, "%d", &session->fast_abort);
+                break;
+        case ISCSI_PARAM_ABORT_TMO:
+                sscanf(buf, "%d", &session->abort_timeout);
+                break;
+        case ISCSI_PARAM_LU_RESET_TMO:
+                sscanf(buf, "%d", &session->lu_reset_timeout);
+                break;
+        case ISCSI_PARAM_PING_TMO:
+                sscanf(buf, "%d", &conn->ping_timeout);
+                break;
+        case ISCSI_PARAM_RECV_TMO:
+                sscanf(buf, "%d", &conn->recv_timeout);
+                break;
         case ISCSI_PARAM_MAX_RECV_DLENGTH:
                 sscanf(buf, "%d", &conn->max_recv_dlength);
                 break;
@@ -1983,6 +2303,15 @@ int iscsi_session_get_param(struct iscsi_cls_session *cls_session,
         int len;
 
         switch(param) {
+        case ISCSI_PARAM_FAST_ABORT:
+                len = sprintf(buf, "%d\n", session->fast_abort);
+                break;
+        case ISCSI_PARAM_ABORT_TMO:
+                len = sprintf(buf, "%d\n", session->abort_timeout);
+                break;
+        case ISCSI_PARAM_LU_RESET_TMO:
+                len = sprintf(buf, "%d\n", session->lu_reset_timeout);
+                break;
         case ISCSI_PARAM_INITIAL_R2T_EN:
                 len = sprintf(buf, "%d\n", session->initial_r2t_en);
                 break;
@@ -2040,6 +2369,12 @@ int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
         int len;
 
         switch(param) {
+        case ISCSI_PARAM_PING_TMO:
+                len = sprintf(buf, "%u\n", conn->ping_timeout);
+                break;
+        case ISCSI_PARAM_RECV_TMO:
+                len = sprintf(buf, "%u\n", conn->recv_timeout);
+                break;
         case ISCSI_PARAM_MAX_RECV_DLENGTH:
                 len = sprintf(buf, "%u\n", conn->max_recv_dlength);
                 break;
diff --git a/drivers/scsi/libsas/Kconfig b/drivers/scsi/libsas/Kconfig
index c01a40d321d4..18f33cd54411 100644
--- a/drivers/scsi/libsas/Kconfig
+++ b/drivers/scsi/libsas/Kconfig
@@ -38,6 +38,15 @@ config SCSI_SAS_ATA
                 Builds in ATA support into libsas.  Will necessitate
                 the loading of libata along with libsas.
 
+config SCSI_SAS_HOST_SMP
+        bool "Support for SMP interpretation for SAS hosts"
+        default y
+        depends on SCSI_SAS_LIBSAS
+        help
+                Allows sas hosts to receive SMP frames.  Selecting this
+                option builds an SMP interpreter into libsas.  Say
+                N here if you want to save the few kb this consumes.
+
 config SCSI_SAS_LIBSAS_DEBUG
         bool "Compile the SAS Domain Transport Attributes in debug mode"
         default y
diff --git a/drivers/scsi/libsas/Makefile b/drivers/scsi/libsas/Makefile
index fd387b91856e..1ad1323c60fa 100644
--- a/drivers/scsi/libsas/Makefile
+++ b/drivers/scsi/libsas/Makefile
@@ -33,5 +33,7 @@ libsas-y +=  sas_init.o     \
                 sas_dump.o     \
                 sas_discover.o \
                 sas_expander.o \
-                sas_scsi_host.o
+                sas_scsi_host.o \
+                sas_task.o
 libsas-$(CONFIG_SCSI_SAS_ATA) +=        sas_ata.o
+libsas-$(CONFIG_SCSI_SAS_HOST_SMP) +=   sas_host_smp.o
\ No newline at end of file
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 827cfb132f21..0996f866f14c 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -498,7 +498,7 @@ static int sas_execute_task(struct sas_task *task, void *buffer, int size,
                         goto ex_err;
                 }
                 wait_for_completion(&task->completion);
-                res = -ETASK;
+                res = -ECOMM;
                 if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
                         int res2;
                         SAS_DPRINTK("task aborted, flags:0x%x\n",
diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index 5f3a0d7b18de..31b9af224243 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -98,7 +98,7 @@ static int sas_get_port_device(struct asd_sas_port *port)
                         dev->dev_type = SATA_PM;
                 else
                         dev->dev_type = SATA_DEV;
-                dev->tproto = SATA_PROTO;
+                dev->tproto = SAS_PROTOCOL_SATA;
         } else {
                 struct sas_identify_frame *id =
                         (struct sas_identify_frame *) dev->frame_rcvd;
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 8727436b222d..aefd865a5788 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -96,7 +96,7 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size,
                 }
 
                 wait_for_completion(&task->completion);
-                res = -ETASK;
+                res = -ECOMM;
                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
                         SAS_DPRINTK("smp task timed out or aborted\n");
                         i->dft->lldd_abort_task(task);
@@ -109,6 +109,16 @@ static int smp_execute_task(struct domain_device *dev, void *req, int req_size,
                     task->task_status.stat == SAM_GOOD) {
                         res = 0;
                         break;
+                } if (task->task_status.resp == SAS_TASK_COMPLETE &&
+                      task->task_status.stat == SAS_DATA_UNDERRUN) {
+                        /* no error, but return the number of bytes of
+                         * underrun */
+                        res = task->task_status.residual;
+                        break;
+                } if (task->task_status.resp == SAS_TASK_COMPLETE &&
+                      task->task_status.stat == SAS_DATA_OVERRUN) {
+                        res = -EMSGSIZE;
+                        break;
                 } else {
                         SAS_DPRINTK("%s: task to dev %016llx response: 0x%x "
                                     "status 0x%x\n", __FUNCTION__,
@@ -656,9 +666,9 @@ static struct domain_device *sas_ex_discover_end_dev(
         sas_ex_get_linkrate(parent, child, phy);
 
 #ifdef CONFIG_SCSI_SAS_ATA
-        if ((phy->attached_tproto & SAS_PROTO_STP) || phy->attached_sata_dev) {
+        if ((phy->attached_tproto & SAS_PROTOCOL_STP) || phy->attached_sata_dev) {
                 child->dev_type = SATA_DEV;
-                if (phy->attached_tproto & SAS_PROTO_STP)
+                if (phy->attached_tproto & SAS_PROTOCOL_STP)
                         child->tproto = phy->attached_tproto;
                 if (phy->attached_sata_dev)
                         child->tproto |= SATA_DEV;
@@ -695,7 +705,7 @@ static struct domain_device *sas_ex_discover_end_dev(
                 }
         } else
 #endif
-          if (phy->attached_tproto & SAS_PROTO_SSP) {
+          if (phy->attached_tproto & SAS_PROTOCOL_SSP) {
                 child->dev_type = SAS_END_DEV;
                 rphy = sas_end_device_alloc(phy->port);
                 /* FIXME: error handling */
@@ -1896,11 +1906,9 @@ int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
         }
 
         /* no rphy means no smp target support (ie aic94xx host) */
-        if (!rphy) {
-                printk("%s: can we send a smp request to a host?\n",
-                       __FUNCTION__);
-                return -EINVAL;
-        }
+        if (!rphy)
+                return sas_smp_host_handler(shost, req, rsp);
+
         type = rphy->identify.device_type;
 
         if (type != SAS_EDGE_EXPANDER_DEVICE &&
@@ -1926,6 +1934,15 @@ int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
 
         ret = smp_execute_task(dev, bio_data(req->bio), req->data_len,
                                bio_data(rsp->bio), rsp->data_len);
+        if (ret > 0) {
+                /* positive number is the untransferred residual */
+                rsp->data_len = ret;
+                req->data_len = 0;
+                ret = 0;
+        } else if (ret == 0) {
+                rsp->data_len = 0;
+                req->data_len = 0;
+        }
 
         return ret;
 }
diff --git a/drivers/scsi/libsas/sas_host_smp.c b/drivers/scsi/libsas/sas_host_smp.c
new file mode 100644
index 000000000000..16f93123271e
--- /dev/null
+++ b/drivers/scsi/libsas/sas_host_smp.c
@@ -0,0 +1,274 @@
+/*
+ * Serial Attached SCSI (SAS) Expander discovery and configuration
+ *
+ * Copyright (C) 2007 James E.J. Bottomley
+ *              <James.Bottomley@HansenPartnership.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 only.
+ */
+#include <linux/scatterlist.h>
+#include <linux/blkdev.h>
+
+#include "sas_internal.h"
+
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_sas.h>
+#include "../scsi_sas_internal.h"
+
+static void sas_host_smp_discover(struct sas_ha_struct *sas_ha, u8 *resp_data,
+                                  u8 phy_id)
+{
+        struct sas_phy *phy;
+        struct sas_rphy *rphy;
+
+        if (phy_id >= sas_ha->num_phys) {
+                resp_data[2] = SMP_RESP_NO_PHY;
+                return;
+        }
+        resp_data[2] = SMP_RESP_FUNC_ACC;
+
+        phy = sas_ha->sas_phy[phy_id]->phy;
+        resp_data[9] = phy_id;
+        resp_data[13] = phy->negotiated_linkrate;
+        memcpy(resp_data + 16, sas_ha->sas_addr, SAS_ADDR_SIZE);
+        memcpy(resp_data + 24, sas_ha->sas_phy[phy_id]->attached_sas_addr,
+               SAS_ADDR_SIZE);
+        resp_data[40] = (phy->minimum_linkrate << 4) |
+                phy->minimum_linkrate_hw;
+        resp_data[41] = (phy->maximum_linkrate << 4) |
+                phy->maximum_linkrate_hw;
+
+        if (!sas_ha->sas_phy[phy_id]->port ||
+            !sas_ha->sas_phy[phy_id]->port->port_dev)
+                return;
+
+        rphy = sas_ha->sas_phy[phy_id]->port->port_dev->rphy;
+        resp_data[12] = rphy->identify.device_type << 4;
+        resp_data[14] = rphy->identify.initiator_port_protocols;
+        resp_data[15] = rphy->identify.target_port_protocols;
+}
+
+static void sas_report_phy_sata(struct sas_ha_struct *sas_ha, u8 *resp_data,
+                                u8 phy_id)
+{
+        struct sas_rphy *rphy;
+        struct dev_to_host_fis *fis;
+        int i;
+
+        if (phy_id >= sas_ha->num_phys) {
+                resp_data[2] = SMP_RESP_NO_PHY;
+                return;
+        }
+
+        resp_data[2] = SMP_RESP_PHY_NO_SATA;
+
+        if (!sas_ha->sas_phy[phy_id]->port)
+                return;
+
+        rphy = sas_ha->sas_phy[phy_id]->port->port_dev->rphy;
+        fis = (struct dev_to_host_fis *)
+                sas_ha->sas_phy[phy_id]->port->port_dev->frame_rcvd;
+        if (rphy->identify.target_port_protocols != SAS_PROTOCOL_SATA)
+                return;
+
+        resp_data[2] = SMP_RESP_FUNC_ACC;
+        resp_data[9] = phy_id;
+        memcpy(resp_data + 16, sas_ha->sas_phy[phy_id]->attached_sas_addr,
+               SAS_ADDR_SIZE);
+
+        /* check to see if we have a valid d2h fis */
+        if (fis->fis_type != 0x34)
+                return;
+
+        /* the d2h fis is required by the standard to be in LE format */
+        for (i = 0; i < 20; i += 4) {
+                u8 *dst = resp_data + 24 + i, *src =
+                        &sas_ha->sas_phy[phy_id]->port->port_dev->frame_rcvd[i];
+                dst[0] = src[3];
+                dst[1] = src[2];
+                dst[2] = src[1];
+                dst[3] = src[0];
+        }
+}
+
+static void sas_phy_control(struct sas_ha_struct *sas_ha, u8 phy_id,
+                            u8 phy_op, enum sas_linkrate min,
+                            enum sas_linkrate max, u8 *resp_data)
+{
+        struct sas_internal *i =
+                to_sas_internal(sas_ha->core.shost->transportt);
+        struct sas_phy_linkrates rates;
+
+        if (phy_id >= sas_ha->num_phys) {
+                resp_data[2] = SMP_RESP_NO_PHY;
+                return;
+        }
+        switch (phy_op) {
+        case PHY_FUNC_NOP:
+        case PHY_FUNC_LINK_RESET:
+        case PHY_FUNC_HARD_RESET:
+        case PHY_FUNC_DISABLE:
+        case PHY_FUNC_CLEAR_ERROR_LOG:
+        case PHY_FUNC_CLEAR_AFFIL:
+        case PHY_FUNC_TX_SATA_PS_SIGNAL:
+                break;
+
+        default:
+                resp_data[2] = SMP_RESP_PHY_UNK_OP;
+                return;
+        }
+
+        rates.minimum_linkrate = min;
+        rates.maximum_linkrate = max;
+
+        if (i->dft->lldd_control_phy(sas_ha->sas_phy[phy_id], phy_op, &rates))
+                resp_data[2] = SMP_RESP_FUNC_FAILED;
+        else
+                resp_data[2] = SMP_RESP_FUNC_ACC;
+}
+
+int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
+                         struct request *rsp)
+{
+        u8 *req_data = NULL, *resp_data = NULL, *buf;
+        struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
+        int error = -EINVAL, resp_data_len = rsp->data_len;
+
+        /* eight is the minimum size for request and response frames */
+        if (req->data_len < 8 || rsp->data_len < 8)
+                goto out;
+
+        if (bio_offset(req->bio) + req->data_len > PAGE_SIZE ||
+            bio_offset(rsp->bio) + rsp->data_len > PAGE_SIZE) {
+                shost_printk(KERN_ERR, shost,
+                        "SMP request/response frame crosses page boundary");
+                goto out;
+        }
+
+        req_data = kzalloc(req->data_len, GFP_KERNEL);
+
+        /* make sure frame can always be built ... we copy
+         * back only the requested length */
+        resp_data = kzalloc(max(rsp->data_len, 128U), GFP_KERNEL);
+
+        if (!req_data || !resp_data) {
+                error = -ENOMEM;
+                goto out;
+        }
+
+        local_irq_disable();
+        buf = kmap_atomic(bio_page(req->bio), KM_USER0) + bio_offset(req->bio);
+        memcpy(req_data, buf, req->data_len);
+        kunmap_atomic(buf - bio_offset(req->bio), KM_USER0);
+        local_irq_enable();
+
+        if (req_data[0] != SMP_REQUEST)
+                goto out;
+
+        /* always succeeds ... even if we can't process the request
+         * the result is in the response frame */
+        error = 0;
+
+        /* set up default don't know response */
+        resp_data[0] = SMP_RESPONSE;
+        resp_data[1] = req_data[1];
+        resp_data[2] = SMP_RESP_FUNC_UNK;
+
+        switch (req_data[1]) {
+        case SMP_REPORT_GENERAL:
+                req->data_len -= 8;
+                resp_data_len -= 32;
+                resp_data[2] = SMP_RESP_FUNC_ACC;
+                resp_data[9] = sas_ha->num_phys;
+                break;
+
+        case SMP_REPORT_MANUF_INFO:
+                req->data_len -= 8;
+                resp_data_len -= 64;
+                resp_data[2] = SMP_RESP_FUNC_ACC;
+                memcpy(resp_data + 12, shost->hostt->name,
+                       SAS_EXPANDER_VENDOR_ID_LEN);
+                memcpy(resp_data + 20, "libsas virt phy",
+                       SAS_EXPANDER_PRODUCT_ID_LEN);
+                break;
+
+        case SMP_READ_GPIO_REG:
+                /* FIXME: need GPIO support in the transport class */
+                break;
+
+        case SMP_DISCOVER:
+                req->data_len =- 16;
+                if (req->data_len < 0) {
+                        req->data_len = 0;
+                        error = -EINVAL;
+                        goto out;
+                }
+                resp_data_len -= 56;
+                sas_host_smp_discover(sas_ha, resp_data, req_data[9]);
+                break;
+
+        case SMP_REPORT_PHY_ERR_LOG:
+                /* FIXME: could implement this with additional
+                 * libsas callbacks providing the HW supports it */
+                break;
+
+        case SMP_REPORT_PHY_SATA:
+                req->data_len =- 16;
+                if (req->data_len < 0) {
+                        req->data_len = 0;
+                        error = -EINVAL;
+                        goto out;
+                }
+                resp_data_len -= 60;
+                sas_report_phy_sata(sas_ha, resp_data, req_data[9]);
+                break;
+
+        case SMP_REPORT_ROUTE_INFO:
+                /* Can't implement; hosts have no routes */
+                break;
+
+        case SMP_WRITE_GPIO_REG:
+                /* FIXME: need GPIO support in the transport class */
+                break;
+
+        case SMP_CONF_ROUTE_INFO:
+                /* Can't implement; hosts have no routes */
+                break;
+
+        case SMP_PHY_CONTROL:
+                req->data_len =- 44;
+                if (req->data_len < 0) {
+                        req->data_len = 0;
+                        error = -EINVAL;
+                        goto out;
+                }
+                resp_data_len -= 8;
+                sas_phy_control(sas_ha, req_data[9], req_data[10],
+                                req_data[32] >> 4, req_data[33] >> 4,
+                                resp_data);
+                break;
+
+        case SMP_PHY_TEST_FUNCTION:
+                /* FIXME: should this be implemented? */
+                break;
+
+        default:
+                /* probably a 2.0 function */
+                break;
+        }
+
+        local_irq_disable();
+        buf = kmap_atomic(bio_page(rsp->bio), KM_USER0) + bio_offset(rsp->bio);
+        memcpy(buf, resp_data, rsp->data_len);
+        flush_kernel_dcache_page(bio_page(rsp->bio));
+        kunmap_atomic(buf - bio_offset(rsp->bio), KM_USER0);
+        local_irq_enable();
+        rsp->data_len = resp_data_len;
+
+ out:
+        kfree(req_data);
+        kfree(resp_data);
+        return error;
+}
diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h
index 2b8213b1832d..b4f9368f116a 100644
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -45,7 +45,7 @@
 void sas_scsi_recover_host(struct Scsi_Host *shost);
 
 int sas_show_class(enum sas_class class, char *buf);
-int sas_show_proto(enum sas_proto proto, char *buf);
+int sas_show_proto(enum sas_protocol proto, char *buf);
 int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
 int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
 
@@ -80,6 +80,20 @@ struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
 
 void sas_hae_reset(struct work_struct *work);
 
+#ifdef CONFIG_SCSI_SAS_HOST_SMP
+extern int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
+                                struct request *rsp);
+#else
+static inline int sas_smp_host_handler(struct Scsi_Host *shost,
+                                       struct request *req,
+                                       struct request *rsp)
+{
+        shost_printk(KERN_ERR, shost,
+                "Cannot send SMP to a sas host (not enabled in CONFIG)\n");
+        return -EINVAL;
+}
+#endif
+
 static inline void sas_queue_event(int event, spinlock_t *lock,
                                    unsigned long *pending,
                                    struct work_struct *work,
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index a3fdc57e2673..f869fba86807 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -108,7 +108,7 @@ static void sas_scsi_task_done(struct sas_task *task)
                         break;
                 case SAM_CHECK_COND:
                         memcpy(sc->sense_buffer, ts->buf,
-                               max(SCSI_SENSE_BUFFERSIZE, ts->buf_valid_size));
+                               min(SCSI_SENSE_BUFFERSIZE, ts->buf_valid_size));
                         stat = SAM_CHECK_COND;
                         break;
                 default:
@@ -148,7 +148,6 @@ static struct sas_task *sas_create_task(struct scsi_cmnd *cmd,
         if (!task)
                 return NULL;
 
-        *(u32 *)cmd->sense_buffer = 0;
         task->uldd_task = cmd;
         ASSIGN_SAS_TASK(cmd, task);
 
@@ -200,6 +199,10 @@ int sas_queue_up(struct sas_task *task)
  */
 int sas_queuecommand(struct scsi_cmnd *cmd,
                      void (*scsi_done)(struct scsi_cmnd *))
+        __releases(host->host_lock)
+        __acquires(dev->sata_dev.ap->lock)
+        __releases(dev->sata_dev.ap->lock)
+        __acquires(host->host_lock)
 {
         int res = 0;
         struct domain_device *dev = cmd_to_domain_dev(cmd);
@@ -410,7 +413,7 @@ static int sas_recover_I_T(struct domain_device *dev)
 }
 
 /* Find the sas_phy that's attached to this device */
-struct sas_phy *find_local_sas_phy(struct domain_device *dev)
+static struct sas_phy *find_local_sas_phy(struct domain_device *dev)
 {
         struct domain_device *pdev = dev->parent;
         struct ex_phy *exphy = NULL;
diff --git a/drivers/scsi/libsas/sas_task.c b/drivers/scsi/libsas/sas_task.c
new file mode 100644
index 000000000000..594524d5bfa1
--- /dev/null
+++ b/drivers/scsi/libsas/sas_task.c
@@ -0,0 +1,36 @@
+#include <linux/kernel.h>
+#include <scsi/sas.h>
+#include <scsi/libsas.h>
+
+/* fill task_status_struct based on SSP response frame */
+void sas_ssp_task_response(struct device *dev, struct sas_task *task,
+                           struct ssp_response_iu *iu)
+{
+        struct task_status_struct *tstat = &task->task_status;
+
+        tstat->resp = SAS_TASK_COMPLETE;
+
+        if (iu->datapres == 0)
+                tstat->stat = iu->status;
+        else if (iu->datapres == 1)
+                tstat->stat = iu->resp_data[3];
+        else if (iu->datapres == 2) {
+                tstat->stat = SAM_CHECK_COND;
+                tstat->buf_valid_size =
+                        min_t(int, SAS_STATUS_BUF_SIZE,
+                              be32_to_cpu(iu->sense_data_len));
+                memcpy(tstat->buf, iu->sense_data, tstat->buf_valid_size);
+
+                if (iu->status != SAM_CHECK_COND)
+                        dev_printk(KERN_WARNING, dev,
+                                   "dev %llx sent sense data, but "
+                                   "stat(%x) is not CHECK CONDITION\n",
+                                   SAS_ADDR(task->dev->sas_addr),
+                                   iu->status);
+        }
+        else
+                /* when datapres contains corrupt/unknown value... */
+                tstat->stat = SAM_CHECK_COND;
+}
+EXPORT_SYMBOL_GPL(sas_ssp_task_response);
+
diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c
index 2ad0a27dbaab..5cff0204227d 100644
--- a/drivers/scsi/libsrp.c
+++ b/drivers/scsi/libsrp.c
@@ -192,18 +192,18 @@ static int srp_direct_data(struct scsi_cmnd *sc, struct srp_direct_buf *md,
 
         if (dma_map) {
                 iue = (struct iu_entry *) sc->SCp.ptr;
-                sg = sc->request_buffer;
+                sg = scsi_sglist(sc);
 
-                dprintk("%p %u %u %d\n", iue, sc->request_bufflen,
-                        md->len, sc->use_sg);
+                dprintk("%p %u %u %d\n", iue, scsi_bufflen(sc),
+                        md->len, scsi_sg_count(sc));
 
-                nsg = dma_map_sg(iue->target->dev, sg, sc->use_sg,
+                nsg = dma_map_sg(iue->target->dev, sg, scsi_sg_count(sc),
                                  DMA_BIDIRECTIONAL);
                 if (!nsg) {
-                        printk("fail to map %p %d\n", iue, sc->use_sg);
+                        printk("fail to map %p %d\n", iue, scsi_sg_count(sc));
                         return 0;
                 }
-                len = min(sc->request_bufflen, md->len);
+                len = min(scsi_bufflen(sc), md->len);
         } else
                 len = md->len;
 
@@ -229,10 +229,10 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd,
 
         if (dma_map || ext_desc) {
                 iue = (struct iu_entry *) sc->SCp.ptr;
-                sg = sc->request_buffer;
+                sg = scsi_sglist(sc);
 
                 dprintk("%p %u %u %d %d\n",
-                        iue, sc->request_bufflen, id->len,
+                        iue, scsi_bufflen(sc), id->len,
                         cmd->data_in_desc_cnt, cmd->data_out_desc_cnt);
         }
 
@@ -268,13 +268,14 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd,
 
 rdma:
         if (dma_map) {
-                nsg = dma_map_sg(iue->target->dev, sg, sc->use_sg, DMA_BIDIRECTIONAL);
+                nsg = dma_map_sg(iue->target->dev, sg, scsi_sg_count(sc),
+                                 DMA_BIDIRECTIONAL);
                 if (!nsg) {
-                        eprintk("fail to map %p %d\n", iue, sc->use_sg);
+                        eprintk("fail to map %p %d\n", iue, scsi_sg_count(sc));
                         err = -EIO;
                         goto free_mem;
                 }
-                len = min(sc->request_bufflen, id->len);
+                len = min(scsi_bufflen(sc), id->len);
         } else
                 len = id->len;
 
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index ba3ecab9baf3..f26b9538affe 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -29,7 +29,8 @@ struct lpfc_sli2_slim;
 #define LPFC_MAX_NS_RETRY       3       /* Number of retry attempts to contact
                                            the NameServer  before giving up. */
 #define LPFC_CMD_PER_LUN        3       /* max outstanding cmds per lun */
-#define LPFC_SG_SEG_CNT         64      /* sg element count per scsi cmnd */
+#define LPFC_DEFAULT_SG_SEG_CNT 64      /* sg element count per scsi cmnd */
+#define LPFC_MAX_SG_SEG_CNT     256     /* sg element count per scsi cmnd */
 #define LPFC_IOCB_LIST_CNT      2250    /* list of IOCBs for fast-path usage. */
 #define LPFC_Q_RAMP_UP_INTERVAL 120     /* lun q_depth ramp up interval */
 
@@ -68,6 +69,7 @@ struct lpfc_dmabuf {
         struct list_head list;
         void *virt;             /* virtual address ptr */
         dma_addr_t phys;        /* mapped address */
+        uint32_t   buffer_tag;  /* used for tagged queue ring */
 };
 
 struct lpfc_dma_pool {
@@ -272,10 +274,16 @@ struct lpfc_vport {
 #define FC_ABORT_DISCOVERY      0x8000   /* we want to abort discovery */
 #define FC_NDISC_ACTIVE         0x10000  /* NPort discovery active */
 #define FC_BYPASSED_MODE        0x20000  /* NPort is in bypassed mode */
-#define FC_RFF_NOT_SUPPORTED    0x40000  /* RFF_ID was rejected by switch */
 #define FC_VPORT_NEEDS_REG_VPI  0x80000  /* Needs to have its vpi registered */
 #define FC_RSCN_DEFERRED        0x100000 /* A deferred RSCN being processed */
 
+        uint32_t ct_flags;
+#define FC_CT_RFF_ID            0x1      /* RFF_ID accepted by switch */
+#define FC_CT_RNN_ID            0x2      /* RNN_ID accepted by switch */
+#define FC_CT_RSNN_NN           0x4      /* RSNN_NN accepted by switch */
+#define FC_CT_RSPN_ID           0x8      /* RSPN_ID accepted by switch */
+#define FC_CT_RFT_ID            0x10     /* RFT_ID accepted by switch */
+
         struct list_head fc_nodes;
 
         /* Keep counters for the number of entries in each list. */
@@ -344,6 +352,7 @@ struct lpfc_vport {
         uint32_t cfg_discovery_threads;
         uint32_t cfg_log_verbose;
         uint32_t cfg_max_luns;
+        uint32_t cfg_enable_da_id;
 
         uint32_t dev_loss_tmo_changed;
 
@@ -360,6 +369,7 @@ struct lpfc_vport {
 
 struct hbq_s {
         uint16_t entry_count;     /* Current number of HBQ slots */
+        uint16_t buffer_count;    /* Current number of buffers posted */
         uint32_t next_hbqPutIdx;  /* Index to next HBQ slot to use */
         uint32_t hbqPutIdx;       /* HBQ slot to use */
         uint32_t local_hbqGetIdx; /* Local copy of Get index from Port */
@@ -377,6 +387,11 @@ struct hbq_s {
 #define LPFC_ELS_HBQ    0
 #define LPFC_EXTRA_HBQ  1
 
+enum hba_temp_state {
+        HBA_NORMAL_TEMP,
+        HBA_OVER_TEMP
+};
+
 struct lpfc_hba {
         struct lpfc_sli sli;
         uint32_t sli_rev;               /* SLI2 or SLI3 */
@@ -457,7 +472,8 @@ struct lpfc_hba {
         uint64_t cfg_soft_wwnn;
         uint64_t cfg_soft_wwpn;
         uint32_t cfg_hba_queue_depth;
-
+        uint32_t cfg_enable_hba_reset;
+        uint32_t cfg_enable_hba_heartbeat;
 
         lpfc_vpd_t vpd;         /* vital product data */
 
@@ -544,8 +560,7 @@ struct lpfc_hba {
         struct list_head port_list;
         struct lpfc_vport *pport;       /* physical lpfc_vport pointer */
         uint16_t max_vpi;               /* Maximum virtual nports */
-#define LPFC_MAX_VPI 100                /* Max number of VPI supported */
-#define LPFC_MAX_VPORTS (LPFC_MAX_VPI+1)/* Max number of VPorts supported */
+#define LPFC_MAX_VPI 0xFFFF             /* Max number of VPI supported */
         unsigned long *vpi_bmask;       /* vpi allocation table */
 
         /* Data structure used by fabric iocb scheduler */
@@ -563,16 +578,30 @@ struct lpfc_hba {
         struct dentry *hba_debugfs_root;
         atomic_t debugfs_vport_count;
         struct dentry *debug_hbqinfo;
-        struct dentry *debug_dumpslim;
+        struct dentry *debug_dumpHostSlim;
+        struct dentry *debug_dumpHBASlim;
         struct dentry *debug_slow_ring_trc;
         struct lpfc_debugfs_trc *slow_ring_trc;
         atomic_t slow_ring_trc_cnt;
 #endif
 
+        /* Used for deferred freeing of ELS data buffers */
+        struct list_head elsbuf;
+        int elsbuf_cnt;
+        int elsbuf_prev_cnt;
+
+        uint8_t temp_sensor_support;
         /* Fields used for heart beat. */
         unsigned long last_completion_time;
         struct timer_list hb_tmofunc;
         uint8_t hb_outstanding;
+        /*
+         * Following bit will be set for all buffer tags which are not
+         * associated with any HBQ.
+         */
+#define QUE_BUFTAG_BIT  (1<<31)
+        uint32_t buffer_tag_count;
+        enum hba_temp_state over_temp_state;
 };
 
 static inline struct Scsi_Host *
@@ -598,5 +627,15 @@ lpfc_is_link_up(struct lpfc_hba *phba)
                 phba->link_state == LPFC_HBA_READY;
 }
 
-#define FC_REG_DUMP_EVENT       0x10    /* Register for Dump events */
+#define FC_REG_DUMP_EVENT               0x10    /* Register for Dump events */
+#define FC_REG_TEMPERATURE_EVENT        0x20    /* Register for temperature
+                                                   event */
 
+struct temp_event {
+        uint32_t event_type;
+        uint32_t event_code;
+        uint32_t data;
+};
+#define LPFC_CRIT_TEMP          0x1
+#define LPFC_THRESHOLD_TEMP     0x2
+#define LPFC_NORMAL_TEMP        0x3
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 80a11218b9bb..4bae4a2ed2f1 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -1,7 +1,7 @@
 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
- * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
+ * Copyright (C) 2004-2008 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.emulex.com                                                  *
  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
@@ -45,6 +45,10 @@
 #define LPFC_MIN_DEVLOSS_TMO 1
 #define LPFC_MAX_DEVLOSS_TMO 255
 
+#define LPFC_MAX_LINK_SPEED 8
+#define LPFC_LINK_SPEED_BITMAP 0x00000117
+#define LPFC_LINK_SPEED_STRING "0, 1, 2, 4, 8"
+
 static void
 lpfc_jedec_to_ascii(int incr, char hdw[])
 {
@@ -86,6 +90,15 @@ lpfc_serialnum_show(struct class_device *cdev, char *buf)
 }
 
 static ssize_t
+lpfc_temp_sensor_show(struct class_device *cdev, char *buf)
+{
+        struct Scsi_Host *shost = class_to_shost(cdev);
+        struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
+        struct lpfc_hba   *phba = vport->phba;
+        return snprintf(buf, PAGE_SIZE, "%d\n",phba->temp_sensor_support);
+}
+
+static ssize_t
 lpfc_modeldesc_show(struct class_device *cdev, char *buf)
 {
         struct Scsi_Host  *shost = class_to_shost(cdev);
@@ -178,12 +191,9 @@ lpfc_state_show(struct class_device *cdev, char *buf)
         case LPFC_LINK_UP:
         case LPFC_CLEAR_LA:
         case LPFC_HBA_READY:
-                len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - \n");
+                len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - ");
 
                 switch (vport->port_state) {
-                        len += snprintf(buf + len, PAGE_SIZE-len,
-                                        "initializing\n");
-                        break;
                 case LPFC_LOCAL_CFG_LINK:
                         len += snprintf(buf + len, PAGE_SIZE-len,
                                         "Configuring Link\n");
@@ -252,8 +262,7 @@ lpfc_issue_lip(struct Scsi_Host *shost)
         int mbxstatus = MBXERR_ERROR;
 
         if ((vport->fc_flag & FC_OFFLINE_MODE) ||
-            (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) ||
-            (vport->port_state != LPFC_VPORT_READY))
+            (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
                 return -EPERM;
 
         pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
@@ -305,12 +314,14 @@ lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
 
         psli = &phba->sli;
 
+        /* Wait a little for things to settle down, but not
+         * long enough for dev loss timeout to expire.
+         */
         for (i = 0; i < psli->num_rings; i++) {
                 pring = &psli->ring[i];
-                /* The linkdown event takes 30 seconds to timeout. */
                 while (pring->txcmplq_cnt) {
                         msleep(10);
-                        if (cnt++ > 3000) {
+                        if (cnt++ > 500) {  /* 5 secs */
                                 lpfc_printf_log(phba,
                                         KERN_WARNING, LOG_INIT,
                                         "0466 Outstanding IO when "
@@ -336,6 +347,9 @@ lpfc_selective_reset(struct lpfc_hba *phba)
         struct completion online_compl;
         int status = 0;
 
+        if (!phba->cfg_enable_hba_reset)
+                return -EIO;
+
         status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
 
         if (status != 0)
@@ -409,6 +423,8 @@ lpfc_board_mode_store(struct class_device *cdev, const char *buf, size_t count)
         struct completion online_compl;
         int status=0;
 
+        if (!phba->cfg_enable_hba_reset)
+                return -EACCES;
         init_completion(&online_compl);
 
         if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
@@ -908,6 +924,8 @@ static CLASS_DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
 static CLASS_DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
 static CLASS_DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
 static CLASS_DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
+static CLASS_DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show,
+                         NULL);
 
 
 static char *lpfc_soft_wwn_key = "C99G71SL8032A";
@@ -971,6 +989,14 @@ lpfc_soft_wwpn_store(struct class_device *cdev, const char *buf, size_t count)
         unsigned int i, j, cnt=count;
         u8 wwpn[8];
 
+        if (!phba->cfg_enable_hba_reset)
+                return -EACCES;
+        spin_lock_irq(&phba->hbalock);
+        if (phba->over_temp_state == HBA_OVER_TEMP) {
+                spin_unlock_irq(&phba->hbalock);
+                return -EACCES;
+        }
+        spin_unlock_irq(&phba->hbalock);
         /* count may include a LF at end of string */
         if (buf[cnt-1] == '\n')
                 cnt--;
@@ -1102,7 +1128,13 @@ MODULE_PARM_DESC(lpfc_sli_mode, "SLI mode selector:"
                  " 2 - select SLI-2 even on SLI-3 capable HBAs,"
                  " 3 - select SLI-3");
 
-LPFC_ATTR_R(enable_npiv, 0, 0, 1, "Enable NPIV functionality");
+int lpfc_enable_npiv = 0;
+module_param(lpfc_enable_npiv, int, 0);
+MODULE_PARM_DESC(lpfc_enable_npiv, "Enable NPIV functionality");
+lpfc_param_show(enable_npiv);
+lpfc_param_init(enable_npiv, 0, 0, 1);
+static CLASS_DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO,
+                         lpfc_enable_npiv_show, NULL);
 
 /*
 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
@@ -1248,6 +1280,13 @@ LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffff,
                        "Verbose logging bit-mask");
 
 /*
+# lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters
+# objects that have been registered with the nameserver after login.
+*/
+LPFC_VPORT_ATTR_R(enable_da_id, 0, 0, 1,
+                  "Deregister nameserver objects before LOGO");
+
+/*
 # lun_queue_depth:  This parameter is used to limit the number of outstanding
 # commands per FCP LUN. Value range is [1,128]. Default value is 30.
 */
@@ -1369,7 +1408,33 @@ LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1,
 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
 # Default value is 0.
 */
-LPFC_ATTR_RW(topology, 0, 0, 6, "Select Fibre Channel topology");
+static int
+lpfc_topology_set(struct lpfc_hba *phba, int val)
+{
+        int err;
+        uint32_t prev_val;
+        if (val >= 0 && val <= 6) {
+                prev_val = phba->cfg_topology;
+                phba->cfg_topology = val;
+                err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
+                if (err)
+                        phba->cfg_topology = prev_val;
+                return err;
+        }
+        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                "%d:0467 lpfc_topology attribute cannot be set to %d, "
+                "allowed range is [0, 6]\n",
+                phba->brd_no, val);
+        return -EINVAL;
+}
+static int lpfc_topology = 0;
+module_param(lpfc_topology, int, 0);
+MODULE_PARM_DESC(lpfc_topology, "Select Fibre Channel topology");
+lpfc_param_show(topology)
+lpfc_param_init(topology, 0, 0, 6)
+lpfc_param_store(topology)
+static CLASS_DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR,
+                lpfc_topology_show, lpfc_topology_store);
 
 /*
 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
@@ -1381,7 +1446,59 @@ LPFC_ATTR_RW(topology, 0, 0, 6, "Select Fibre Channel topology");
 #       8  = 8 Gigabaud
 # Value range is [0,8]. Default value is 0.
 */
-LPFC_ATTR_R(link_speed, 0, 0, 8, "Select link speed");
+static int
+lpfc_link_speed_set(struct lpfc_hba *phba, int val)
+{
+        int err;
+        uint32_t prev_val;
+
+        if (((val == LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) ||
+                ((val == LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) ||
+                ((val == LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) ||
+                ((val == LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) ||
+                ((val == LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)))
+                return -EINVAL;
+
+        if ((val >= 0 && val <= LPFC_MAX_LINK_SPEED)
+                && (LPFC_LINK_SPEED_BITMAP & (1 << val))) {
+                prev_val = phba->cfg_link_speed;
+                phba->cfg_link_speed = val;
+                err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
+                if (err)
+                        phba->cfg_link_speed = prev_val;
+                return err;
+        }
+
+        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                "%d:0469 lpfc_link_speed attribute cannot be set to %d, "
+                "allowed range is [0, 8]\n",
+                phba->brd_no, val);
+        return -EINVAL;
+}
+
+static int lpfc_link_speed = 0;
+module_param(lpfc_link_speed, int, 0);
+MODULE_PARM_DESC(lpfc_link_speed, "Select link speed");
+lpfc_param_show(link_speed)
+static int
+lpfc_link_speed_init(struct lpfc_hba *phba, int val)
+{
+        if ((val >= 0 && val <= LPFC_MAX_LINK_SPEED)
+                && (LPFC_LINK_SPEED_BITMAP & (1 << val))) {
+                phba->cfg_link_speed = val;
+                return 0;
+        }
+        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                        "0454 lpfc_link_speed attribute cannot "
+                        "be set to %d, allowed values are "
+                        "["LPFC_LINK_SPEED_STRING"]\n", val);
+        phba->cfg_link_speed = 0;
+        return -EINVAL;
+}
+
+lpfc_param_store(link_speed)
+static CLASS_DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR,
+                lpfc_link_speed_show, lpfc_link_speed_store);
 
 /*
 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
@@ -1479,7 +1596,30 @@ LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
 */
 LPFC_ATTR_R(use_msi, 0, 0, 1, "Use Message Signaled Interrupts, if possible");
 
+/*
+# lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware.
+#       0  = HBA resets disabled
+#       1  = HBA resets enabled (default)
+# Value range is [0,1]. Default value is 1.
+*/
+LPFC_ATTR_R(enable_hba_reset, 1, 0, 1, "Enable HBA resets from the driver.");
+
+/*
+# lpfc_enable_hba_heartbeat: Enable HBA heartbeat timer..
+#       0  = HBA Heartbeat disabled
+#       1  = HBA Heartbeat enabled (default)
+# Value range is [0,1]. Default value is 1.
+*/
+LPFC_ATTR_R(enable_hba_heartbeat, 1, 0, 1, "Enable HBA Heartbeat.");
 
+/*
+ * lpfc_sg_seg_cnt: Initial Maximum DMA Segment Count
+ * This value can be set to values between 64 and 256. The default value is
+ * 64, but may be increased to allow for larger Max I/O sizes. The scsi layer
+ * will be allowed to request I/Os of sizes up to (MAX_SEG_COUNT * SEG_SIZE).
+ */
+LPFC_ATTR_R(sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, LPFC_DEFAULT_SG_SEG_CNT,
+            LPFC_MAX_SG_SEG_CNT, "Max Scatter Gather Segment Count");
 
 struct class_device_attribute *lpfc_hba_attrs[] = {
         &class_device_attr_info,
@@ -1494,6 +1634,7 @@ struct class_device_attribute *lpfc_hba_attrs[] = {
         &class_device_attr_state,
         &class_device_attr_num_discovered_ports,
         &class_device_attr_lpfc_drvr_version,
+        &class_device_attr_lpfc_temp_sensor,
         &class_device_attr_lpfc_log_verbose,
         &class_device_attr_lpfc_lun_queue_depth,
         &class_device_attr_lpfc_hba_queue_depth,
@@ -1530,6 +1671,9 @@ struct class_device_attribute *lpfc_hba_attrs[] = {
         &class_device_attr_lpfc_soft_wwnn,
         &class_device_attr_lpfc_soft_wwpn,
         &class_device_attr_lpfc_soft_wwn_enable,
+        &class_device_attr_lpfc_enable_hba_reset,
+        &class_device_attr_lpfc_enable_hba_heartbeat,
+        &class_device_attr_lpfc_sg_seg_cnt,
         NULL,
 };
 
@@ -1552,6 +1696,7 @@ struct class_device_attribute *lpfc_vport_attrs[] = {
         &class_device_attr_lpfc_max_luns,
         &class_device_attr_nport_evt_cnt,
         &class_device_attr_npiv_info,
+        &class_device_attr_lpfc_enable_da_id,
         NULL,
 };
 
@@ -1727,13 +1872,18 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
 
         spin_lock_irq(&phba->hbalock);
 
+        if (phba->over_temp_state == HBA_OVER_TEMP) {
+                sysfs_mbox_idle(phba);
+                spin_unlock_irq(&phba->hbalock);
+                return  -EACCES;
+        }
+
         if (off == 0 &&
             phba->sysfs_mbox.state  == SMBOX_WRITING &&
             phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {
 
                 switch (phba->sysfs_mbox.mbox->mb.mbxCommand) {
                         /* Offline only */
-                case MBX_WRITE_NV:
                 case MBX_INIT_LINK:
                 case MBX_DOWN_LINK:
                 case MBX_CONFIG_LINK:
@@ -1744,9 +1894,7 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
                 case MBX_DUMP_CONTEXT:
                 case MBX_RUN_DIAGS:
                 case MBX_RESTART:
-                case MBX_FLASH_WR_ULA:
                 case MBX_SET_MASK:
-                case MBX_SET_SLIM:
                 case MBX_SET_DEBUG:
                         if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
                                 printk(KERN_WARNING "mbox_read:Command 0x%x "
@@ -1756,6 +1904,8 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
                                 spin_unlock_irq(&phba->hbalock);
                                 return -EPERM;
                         }
+                case MBX_WRITE_NV:
+                case MBX_WRITE_VPARMS:
                 case MBX_LOAD_SM:
                 case MBX_READ_NV:
                 case MBX_READ_CONFIG:
@@ -1772,6 +1922,8 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
                 case MBX_LOAD_EXP_ROM:
                 case MBX_BEACON:
                 case MBX_DEL_LD_ENTRY:
+                case MBX_SET_VARIABLE:
+                case MBX_WRITE_WWN:
                         break;
                 case MBX_READ_SPARM64:
                 case MBX_READ_LA:
@@ -1793,6 +1945,17 @@ sysfs_mbox_read(struct kobject *kobj, struct bin_attribute *bin_attr,
                         return -EPERM;
                 }
 
+                /* If HBA encountered an error attention, allow only DUMP
+                 * mailbox command until the HBA is restarted.
+                 */
+                if ((phba->pport->stopped) &&
+                        (phba->sysfs_mbox.mbox->mb.mbxCommand
+                                != MBX_DUMP_MEMORY)) {
+                        sysfs_mbox_idle(phba);
+                        spin_unlock_irq(&phba->hbalock);
+                        return -EPERM;
+                }
+
                 phba->sysfs_mbox.mbox->vport = vport;
 
                 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
@@ -1993,7 +2156,8 @@ lpfc_get_host_speed(struct Scsi_Host *shost)
                                 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
                         break;
                 }
-        }
+        } else
+                fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
 
         spin_unlock_irq(shost->host_lock);
 }
@@ -2013,7 +2177,7 @@ lpfc_get_host_fabric_name (struct Scsi_Host *shost)
                 node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
         else
                 /* fabric is local port if there is no F/FL_Port */
-                node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
+                node_name = 0;
 
         spin_unlock_irq(shost->host_lock);
 
@@ -2337,8 +2501,6 @@ struct fc_function_template lpfc_transport_functions = {
         .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
         .terminate_rport_io = lpfc_terminate_rport_io,
 
-        .vport_create = lpfc_vport_create,
-        .vport_delete = lpfc_vport_delete,
         .dd_fcvport_size = sizeof(struct lpfc_vport *),
 };
 
@@ -2414,21 +2576,23 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
         lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
         lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
         lpfc_use_msi_init(phba, lpfc_use_msi);
+        lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
+        lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
         phba->cfg_poll = lpfc_poll;
         phba->cfg_soft_wwnn = 0L;
         phba->cfg_soft_wwpn = 0L;
-        /*
-         * The total number of segments is the configuration value plus 2
-         * since the IOCB need a command and response bde.
-         */
-        phba->cfg_sg_seg_cnt = LPFC_SG_SEG_CNT + 2;
+        lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
+        /* Also reinitialize the host templates with new values. */
+        lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
+        lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
         /*
          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
-         * used to create the sg_dma_buf_pool must be dynamically calculated
+         * used to create the sg_dma_buf_pool must be dynamically calculated.
+         * 2 segments are added since the IOCB needs a command and response bde.
          */
         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
                         sizeof(struct fcp_rsp) +
-                        (phba->cfg_sg_seg_cnt * sizeof(struct ulp_bde64));
+                        ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
         lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
         return;
 }
@@ -2448,5 +2612,6 @@ lpfc_get_vport_cfgparam(struct lpfc_vport *vport)
         lpfc_discovery_threads_init(vport, lpfc_discovery_threads);
         lpfc_max_luns_init(vport, lpfc_max_luns);
         lpfc_scan_down_init(vport, lpfc_scan_down);
+        lpfc_enable_da_id_init(vport, lpfc_enable_da_id);
         return;
 }
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
index a599e1510710..50fcb7c930bc 100644
--- a/drivers/scsi/lpfc/lpfc_crtn.h
+++ b/drivers/scsi/lpfc/lpfc_crtn.h
@@ -23,6 +23,8 @@ typedef int (*node_filter)(struct lpfc_nodelist *ndlp, void *param);
 struct fc_rport;
 void lpfc_dump_mem(struct lpfc_hba *, LPFC_MBOXQ_t *, uint16_t);
 void lpfc_read_nv(struct lpfc_hba *, LPFC_MBOXQ_t *);
+void lpfc_config_async(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
+
 void lpfc_heart_beat(struct lpfc_hba *, LPFC_MBOXQ_t *);
 int lpfc_read_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb,
                  struct lpfc_dmabuf *mp);
@@ -43,9 +45,9 @@ void lpfc_init_link(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t, uint32_t);
 struct lpfc_vport *lpfc_find_vport_by_did(struct lpfc_hba *, uint32_t);
 void lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove);
 int lpfc_linkdown(struct lpfc_hba *);
+void lpfc_port_link_failure(struct lpfc_vport *);
 void lpfc_mbx_cmpl_read_la(struct lpfc_hba *, LPFC_MBOXQ_t *);
 
-void lpfc_mbx_cmpl_clear_la(struct lpfc_hba *, LPFC_MBOXQ_t *);
 void lpfc_mbx_cmpl_reg_login(struct lpfc_hba *, LPFC_MBOXQ_t *);
 void lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *, LPFC_MBOXQ_t *);
 void lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *, LPFC_MBOXQ_t *);
@@ -66,15 +68,15 @@ int lpfc_check_sli_ndlp(struct lpfc_hba *, struct lpfc_sli_ring *,
 void lpfc_nlp_init(struct lpfc_vport *, struct lpfc_nodelist *, uint32_t);
 struct lpfc_nodelist *lpfc_nlp_get(struct lpfc_nodelist *);
 int  lpfc_nlp_put(struct lpfc_nodelist *);
+int  lpfc_nlp_not_used(struct lpfc_nodelist *ndlp);
 struct lpfc_nodelist *lpfc_setup_disc_node(struct lpfc_vport *, uint32_t);
 void lpfc_disc_list_loopmap(struct lpfc_vport *);
 void lpfc_disc_start(struct lpfc_vport *);
-void lpfc_disc_flush_list(struct lpfc_vport *);
 void lpfc_cleanup_discovery_resources(struct lpfc_vport *);
+void lpfc_cleanup(struct lpfc_vport *);
 void lpfc_disc_timeout(unsigned long);
 
 struct lpfc_nodelist *__lpfc_findnode_rpi(struct lpfc_vport *, uint16_t);
-struct lpfc_nodelist *lpfc_findnode_rpi(struct lpfc_vport *, uint16_t);
 
 void lpfc_worker_wake_up(struct lpfc_hba *);
 int lpfc_workq_post_event(struct lpfc_hba *, void *, void *, uint32_t);
@@ -82,17 +84,17 @@ int lpfc_do_work(void *);
 int lpfc_disc_state_machine(struct lpfc_vport *, struct lpfc_nodelist *, void *,
                             uint32_t);
 
-void lpfc_register_new_vport(struct lpfc_hba *, struct lpfc_vport *,
-                        struct lpfc_nodelist *);
 void lpfc_do_scr_ns_plogi(struct lpfc_hba *, struct lpfc_vport *);
 int lpfc_check_sparm(struct lpfc_vport *, struct lpfc_nodelist *,
                      struct serv_parm *, uint32_t);
 int lpfc_els_abort(struct lpfc_hba *, struct lpfc_nodelist *);
+void lpfc_more_plogi(struct lpfc_vport *);
+void lpfc_more_adisc(struct lpfc_vport *);
+void lpfc_end_rscn(struct lpfc_vport *);
 int lpfc_els_chk_latt(struct lpfc_vport *);
 int lpfc_els_abort_flogi(struct lpfc_hba *);
 int lpfc_initial_flogi(struct lpfc_vport *);
 int lpfc_initial_fdisc(struct lpfc_vport *);
-int lpfc_issue_els_fdisc(struct lpfc_vport *, struct lpfc_nodelist *, uint8_t);
 int lpfc_issue_els_plogi(struct lpfc_vport *, uint32_t, uint8_t);
 int lpfc_issue_els_prli(struct lpfc_vport *, struct lpfc_nodelist *, uint8_t);
 int lpfc_issue_els_adisc(struct lpfc_vport *, struct lpfc_nodelist *, uint8_t);
@@ -112,7 +114,6 @@ int lpfc_els_rsp_prli_acc(struct lpfc_vport *, struct lpfc_iocbq *,
 void lpfc_cancel_retry_delay_tmo(struct lpfc_vport *, struct lpfc_nodelist *);
 void lpfc_els_retry_delay(unsigned long);
 void lpfc_els_retry_delay_handler(struct lpfc_nodelist *);
-void lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *);
 void lpfc_els_unsol_event(struct lpfc_hba *, struct lpfc_sli_ring *,
                           struct lpfc_iocbq *);
 int lpfc_els_handle_rscn(struct lpfc_vport *);
@@ -124,7 +125,6 @@ int lpfc_els_disc_adisc(struct lpfc_vport *);
 int lpfc_els_disc_plogi(struct lpfc_vport *);
 void lpfc_els_timeout(unsigned long);
 void lpfc_els_timeout_handler(struct lpfc_vport *);
-void lpfc_hb_timeout(unsigned long);
 void lpfc_hb_timeout_handler(struct lpfc_hba *);
 
 void lpfc_ct_unsol_event(struct lpfc_hba *, struct lpfc_sli_ring *,
@@ -142,7 +142,6 @@ void lpfc_hba_init(struct lpfc_hba *, uint32_t *);
 int lpfc_post_buffer(struct lpfc_hba *, struct lpfc_sli_ring *, int, int);
 void lpfc_decode_firmware_rev(struct lpfc_hba *, char *, int);
 int lpfc_online(struct lpfc_hba *);
-void lpfc_block_mgmt_io(struct lpfc_hba *);
 void lpfc_unblock_mgmt_io(struct lpfc_hba *);
 void lpfc_offline_prep(struct lpfc_hba *);
 void lpfc_offline(struct lpfc_hba *);
@@ -165,7 +164,6 @@ int lpfc_mbox_tmo_val(struct lpfc_hba *, int);
 
 void lpfc_config_hbq(struct lpfc_hba *, uint32_t, struct lpfc_hbq_init *,
         uint32_t , LPFC_MBOXQ_t *);
-struct lpfc_hbq_entry * lpfc_sli_next_hbq_slot(struct lpfc_hba *, uint32_t);
 struct hbq_dmabuf *lpfc_els_hbq_alloc(struct lpfc_hba *);
 void lpfc_els_hbq_free(struct lpfc_hba *, struct hbq_dmabuf *);
 
@@ -178,7 +176,6 @@ void lpfc_poll_start_timer(struct lpfc_hba * phba);
 void lpfc_sli_poll_fcp_ring(struct lpfc_hba * hba);
 struct lpfc_iocbq * lpfc_sli_get_iocbq(struct lpfc_hba *);
 void lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocb);
-void __lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocb);
 uint16_t lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocb);
 
 void lpfc_reset_barrier(struct lpfc_hba * phba);
@@ -204,11 +201,14 @@ int lpfc_sli_ringpostbuf_put(struct lpfc_hba *, struct lpfc_sli_ring *,
 struct lpfc_dmabuf *lpfc_sli_ringpostbuf_get(struct lpfc_hba *,
                                              struct lpfc_sli_ring *,
                                              dma_addr_t);
+
+uint32_t lpfc_sli_get_buffer_tag(struct lpfc_hba *);
+struct lpfc_dmabuf * lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *,
+                        struct lpfc_sli_ring *, uint32_t );
+
 int lpfc_sli_hbq_count(void);
-int lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *, uint32_t);
 int lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *, uint32_t);
 void lpfc_sli_hbqbuf_free_all(struct lpfc_hba *);
-struct hbq_dmabuf *lpfc_sli_hbqbuf_find(struct lpfc_hba *, uint32_t);
 int lpfc_sli_hbq_size(void);
 int lpfc_sli_issue_abort_iotag(struct lpfc_hba *, struct lpfc_sli_ring *,
                                struct lpfc_iocbq *);
@@ -219,9 +219,6 @@ int lpfc_sli_abort_iocb(struct lpfc_vport *, struct lpfc_sli_ring *, uint16_t,
 void lpfc_mbox_timeout(unsigned long);
 void lpfc_mbox_timeout_handler(struct lpfc_hba *);
 
-struct lpfc_nodelist *__lpfc_find_node(struct lpfc_vport *, node_filter,
-                                       void *);
-struct lpfc_nodelist *lpfc_find_node(struct lpfc_vport *, node_filter, void *);
 struct lpfc_nodelist *lpfc_findnode_did(struct lpfc_vport *, uint32_t);
 struct lpfc_nodelist *lpfc_findnode_wwpn(struct lpfc_vport *,
                                          struct lpfc_name *);
@@ -260,6 +257,7 @@ extern struct scsi_host_template lpfc_vport_template;
 extern struct fc_function_template lpfc_transport_functions;
 extern struct fc_function_template lpfc_vport_transport_functions;
 extern int lpfc_sli_mode;
+extern int lpfc_enable_npiv;
 
 int  lpfc_vport_symbolic_node_name(struct lpfc_vport *, char *, size_t);
 void lpfc_terminate_rport_io(struct fc_rport *);
@@ -281,11 +279,8 @@ extern void lpfc_debugfs_slow_ring_trc(struct lpfc_hba *, char *, uint32_t,
 extern struct lpfc_hbq_init *lpfc_hbq_defs[];
 
 /* Interface exported by fabric iocb scheduler */
-int lpfc_issue_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *);
-void lpfc_fabric_abort_vport(struct lpfc_vport *);
 void lpfc_fabric_abort_nport(struct lpfc_nodelist *);
 void lpfc_fabric_abort_hba(struct lpfc_hba *);
-void lpfc_fabric_abort_flogi(struct lpfc_hba *);
 void lpfc_fabric_block_timeout(unsigned long);
 void lpfc_unblock_fabric_iocbs(struct lpfc_hba *);
 void lpfc_adjust_queue_depth(struct lpfc_hba *);
diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index c701e4d611a9..92441ce610ed 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -19,7 +19,7 @@
  *******************************************************************/
 
 /*
- * Fibre Channel SCSI LAN Device Driver CT support
+ * Fibre Channel SCSI LAN Device Driver CT support: FC Generic Services FC-GS
  */
 
 #include <linux/blkdev.h>
@@ -57,45 +57,27 @@
 
 static char *lpfc_release_version = LPFC_DRIVER_VERSION;
 
-/*
- * lpfc_ct_unsol_event
- */
 static void
-lpfc_ct_unsol_buffer(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
-                     struct lpfc_dmabuf *mp, uint32_t size)
+lpfc_ct_ignore_hbq_buffer(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
+                          struct lpfc_dmabuf *mp, uint32_t size)
 {
         if (!mp) {
-                printk(KERN_ERR "%s (%d): Unsolited CT, no buffer, "
-                       "piocbq = %p, status = x%x, mp = %p, size = %d\n",
-                       __FUNCTION__, __LINE__,
-                       piocbq, piocbq->iocb.ulpStatus, mp, size);
+                lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+                                "0146 Ignoring unsolicted CT No HBQ "
+                                "status = x%x\n",
+                                piocbq->iocb.ulpStatus);
         }
-
-        printk(KERN_ERR "%s (%d): Ignoring unsolicted CT piocbq = %p, "
-               "buffer = %p, size = %d, status = x%x\n",
-               __FUNCTION__, __LINE__,
-               piocbq, mp, size,
-               piocbq->iocb.ulpStatus);
-
+        lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+                        "0145 Ignoring unsolicted CT HBQ Size:%d "
+                        "status = x%x\n",
+                        size, piocbq->iocb.ulpStatus);
 }
 
 static void
-lpfc_ct_ignore_hbq_buffer(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
-                          struct lpfc_dmabuf *mp, uint32_t size)
+lpfc_ct_unsol_buffer(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
+                     struct lpfc_dmabuf *mp, uint32_t size)
 {
-        if (!mp) {
-                printk(KERN_ERR "%s (%d): Unsolited CT, no "
-                       "HBQ buffer, piocbq = %p, status = x%x\n",
-                       __FUNCTION__, __LINE__,
-                       piocbq, piocbq->iocb.ulpStatus);
-        } else {
-                lpfc_ct_unsol_buffer(phba, piocbq, mp, size);
-                printk(KERN_ERR "%s (%d): Ignoring unsolicted CT "
-                       "piocbq = %p, buffer = %p, size = %d, "
-                       "status = x%x\n",
-                       __FUNCTION__, __LINE__,
-                       piocbq, mp, size, piocbq->iocb.ulpStatus);
-        }
+        lpfc_ct_ignore_hbq_buffer(phba, piocbq, mp, size);
 }
 
 void
@@ -109,11 +91,8 @@ lpfc_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         struct lpfc_iocbq *iocbq;
         dma_addr_t paddr;
         uint32_t size;
-        struct lpfc_dmabuf *bdeBuf1 = piocbq->context2;
-        struct lpfc_dmabuf *bdeBuf2 = piocbq->context3;
-
-        piocbq->context2 = NULL;
-        piocbq->context3 = NULL;
+        struct list_head head;
+        struct lpfc_dmabuf *bdeBuf;
 
         if (unlikely(icmd->ulpStatus == IOSTAT_NEED_BUFFER)) {
                 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
@@ -122,7 +101,7 @@ lpfc_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 /* Not enough posted buffers; Try posting more buffers */
                 phba->fc_stat.NoRcvBuf++;
                 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
-                        lpfc_post_buffer(phba, pring, 0, 1);
+                        lpfc_post_buffer(phba, pring, 2, 1);
                 return;
         }
 
@@ -133,38 +112,34 @@ lpfc_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 return;
 
         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
-                list_for_each_entry(iocbq, &piocbq->list, list) {
+                INIT_LIST_HEAD(&head);
+                list_add_tail(&head, &piocbq->list);
+                list_for_each_entry(iocbq, &head, list) {
                         icmd = &iocbq->iocb;
-                        if (icmd->ulpBdeCount == 0) {
-                                printk(KERN_ERR "%s (%d): Unsolited CT, no "
-                                       "BDE, iocbq = %p, status = x%x\n",
-                                       __FUNCTION__, __LINE__,
-                                       iocbq, iocbq->iocb.ulpStatus);
+                        if (icmd->ulpBdeCount == 0)
                                 continue;
-                        }
-
+                        bdeBuf = iocbq->context2;
+                        iocbq->context2 = NULL;
                         size  = icmd->un.cont64[0].tus.f.bdeSize;
-                        lpfc_ct_ignore_hbq_buffer(phba, piocbq, bdeBuf1, size);
-                        lpfc_in_buf_free(phba, bdeBuf1);
+                        lpfc_ct_unsol_buffer(phba, piocbq, bdeBuf, size);
+                        lpfc_in_buf_free(phba, bdeBuf);
                         if (icmd->ulpBdeCount == 2) {
-                                lpfc_ct_ignore_hbq_buffer(phba, piocbq, bdeBuf2,
-                                                          size);
-                                lpfc_in_buf_free(phba, bdeBuf2);
+                                bdeBuf = iocbq->context3;
+                                iocbq->context3 = NULL;
+                                size  = icmd->unsli3.rcvsli3.bde2.tus.f.bdeSize;
+                                lpfc_ct_unsol_buffer(phba, piocbq, bdeBuf,
+                                                     size);
+                                lpfc_in_buf_free(phba, bdeBuf);
                         }
                 }
+                list_del(&head);
         } else {
                 struct lpfc_iocbq  *next;
 
                 list_for_each_entry_safe(iocbq, next, &piocbq->list, list) {
                         icmd = &iocbq->iocb;
-                        if (icmd->ulpBdeCount == 0) {
-                                printk(KERN_ERR "%s (%d): Unsolited CT, no "
-                                       "BDE, iocbq = %p, status = x%x\n",
-                                       __FUNCTION__, __LINE__,
-                                       iocbq, iocbq->iocb.ulpStatus);
-                                continue;
-                        }
-
+                        if (icmd->ulpBdeCount == 0)
+                                lpfc_ct_unsol_buffer(phba, piocbq, NULL, 0);
                         for (i = 0; i < icmd->ulpBdeCount; i++) {
                                 paddr = getPaddr(icmd->un.cont64[i].addrHigh,
                                                  icmd->un.cont64[i].addrLow);
@@ -176,6 +151,7 @@ lpfc_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                         }
                         list_del(&iocbq->list);
                         lpfc_sli_release_iocbq(phba, iocbq);
+                        lpfc_post_buffer(phba, pring, i, 1);
                 }
         }
 }
@@ -203,7 +179,7 @@ lpfc_alloc_ct_rsp(struct lpfc_hba *phba, int cmdcode, struct ulp_bde64 *bpl,
         struct lpfc_dmabuf *mp;
         int cnt, i = 0;
 
-        /* We get chucks of FCELSSIZE */
+        /* We get chunks of FCELSSIZE */
         cnt = size > FCELSSIZE ? FCELSSIZE: size;
 
         while (size) {
@@ -426,6 +402,7 @@ lpfc_ns_rsp(struct lpfc_vport *vport, struct lpfc_dmabuf *mp, uint32_t Size)
 
         lpfc_set_disctmo(vport);
         vport->num_disc_nodes = 0;
+        vport->fc_ns_retry = 0;
 
 
         list_add_tail(&head, &mp->list);
@@ -458,7 +435,7 @@ lpfc_ns_rsp(struct lpfc_vport *vport, struct lpfc_dmabuf *mp, uint32_t Size)
                             ((lpfc_find_vport_by_did(phba, Did) == NULL) ||
                              vport->cfg_peer_port_login)) {
                                 if ((vport->port_type != LPFC_NPIV_PORT) ||
-                                    (vport->fc_flag & FC_RFF_NOT_SUPPORTED) ||
+                                    (!(vport->ct_flags & FC_CT_RFF_ID)) ||
                                     (!vport->cfg_restrict_login)) {
                                         ndlp = lpfc_setup_disc_node(vport, Did);
                                         if (ndlp) {
@@ -506,7 +483,17 @@ lpfc_ns_rsp(struct lpfc_vport *vport, struct lpfc_dmabuf *mp, uint32_t Size)
                                                 Did, vport->fc_flag,
                                                 vport->fc_rscn_id_cnt);
 
-                                                if (lpfc_ns_cmd(vport,
+                                                /* This NPortID was previously
+                                                 * a FCP target, * Don't even
+                                                 * bother to send GFF_ID.
+                                                 */
+                                                ndlp = lpfc_findnode_did(vport,
+                                                        Did);
+                                                if (ndlp && (ndlp->nlp_type &
+                                                        NLP_FCP_TARGET))
+                                                        lpfc_setup_disc_node
+                                                                (vport, Did);
+                                                else if (lpfc_ns_cmd(vport,
                                                         SLI_CTNS_GFF_ID,
                                                         0, Did) == 0)
                                                         vport->num_disc_nodes++;
@@ -554,7 +541,7 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         struct lpfc_dmabuf *outp;
         struct lpfc_sli_ct_request *CTrsp;
         struct lpfc_nodelist *ndlp;
-        int rc;
+        int rc, retry;
 
         /* First save ndlp, before we overwrite it */
         ndlp = cmdiocb->context_un.ndlp;
@@ -574,7 +561,6 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         if (vport->load_flag & FC_UNLOADING)
                 goto out;
 
-
         if (lpfc_els_chk_latt(vport) || lpfc_error_lost_link(irsp)) {
                 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
                                  "0216 Link event during NS query\n");
@@ -585,14 +571,35 @@ lpfc_cmpl_ct_cmd_gid_ft(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         if (irsp->ulpStatus) {
                 /* Check for retry */
                 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
-                        if ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
-                                (irsp->un.ulpWord[4] != IOERR_NO_RESOURCES))
+                        retry = 1;
+                        if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
+                                switch (irsp->un.ulpWord[4]) {
+                                case IOERR_NO_RESOURCES:
+                                        /* We don't increment the retry
+                                         * count for this case.
+                                         */
+                                        break;
+                                case IOERR_LINK_DOWN:
+                                case IOERR_SLI_ABORTED:
+                                case IOERR_SLI_DOWN:
+                                        retry = 0;
+                                        break;
+                                default:
+                                        vport->fc_ns_retry++;
+                                }
+                        }
+                        else
                                 vport->fc_ns_retry++;
-                        /* CT command is being retried */
-                        rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
+
+                        if (retry) {
+                                /* CT command is being retried */
+                                rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
                                          vport->fc_ns_retry, 0);
-                        if (rc == 0)
-                                goto out;
+                                if (rc == 0) {
+                                        /* success */
+                                        goto out;
+                                }
+                        }
                 }
                 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
@@ -698,7 +705,7 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         struct lpfc_dmabuf *inp = (struct lpfc_dmabuf *) cmdiocb->context1;
         struct lpfc_dmabuf *outp = (struct lpfc_dmabuf *) cmdiocb->context2;
         struct lpfc_sli_ct_request *CTrsp;
-        int did;
+        int did, rc, retry;
         uint8_t fbits;
         struct lpfc_nodelist *ndlp;
 
@@ -729,6 +736,39 @@ lpfc_cmpl_ct_cmd_gff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 }
         }
         else {
+                /* Check for retry */
+                if (cmdiocb->retry < LPFC_MAX_NS_RETRY) {
+                        retry = 1;
+                        if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
+                                switch (irsp->un.ulpWord[4]) {
+                                case IOERR_NO_RESOURCES:
+                                        /* We don't increment the retry
+                                         * count for this case.
+                                         */
+                                        break;
+                                case IOERR_LINK_DOWN:
+                                case IOERR_SLI_ABORTED:
+                                case IOERR_SLI_DOWN:
+                                        retry = 0;
+                                        break;
+                                default:
+                                        cmdiocb->retry++;
+                                }
+                        }
+                        else
+                                cmdiocb->retry++;
+
+                        if (retry) {
+                                /* CT command is being retried */
+                                rc = lpfc_ns_cmd(vport, SLI_CTNS_GFF_ID,
+                                         cmdiocb->retry, did);
+                                if (rc == 0) {
+                                        /* success */
+                                        lpfc_ct_free_iocb(phba, cmdiocb);
+                                        return;
+                                }
+                        }
+                }
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                                  "0267 NameServer GFF Rsp "
                                  "x%x Error (%d %d) Data: x%x x%x\n",
@@ -778,8 +818,8 @@ out:
 
 
 static void
-lpfc_cmpl_ct_cmd_rft_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
-                        struct lpfc_iocbq *rspiocb)
+lpfc_cmpl_ct(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+             struct lpfc_iocbq *rspiocb)
 {
         struct lpfc_vport *vport = cmdiocb->vport;
         struct lpfc_dmabuf *inp;
@@ -809,7 +849,7 @@ lpfc_cmpl_ct_cmd_rft_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 
         /* RFT request completes status <ulpStatus> CmdRsp <CmdRsp> */
         lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
-                         "0209 RFT request completes, latt %d, "
+                         "0209 CT Request completes, latt %d, "
                          "ulpStatus x%x CmdRsp x%x, Context x%x, Tag x%x\n",
                          latt, irsp->ulpStatus,
                          CTrsp->CommandResponse.bits.CmdRsp,
@@ -848,10 +888,44 @@ out:
 }
 
 static void
+lpfc_cmpl_ct_cmd_rft_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+                        struct lpfc_iocbq *rspiocb)
+{
+        IOCB_t *irsp = &rspiocb->iocb;
+        struct lpfc_vport *vport = cmdiocb->vport;
+
+        if (irsp->ulpStatus == IOSTAT_SUCCESS) {
+                struct lpfc_dmabuf *outp;
+                struct lpfc_sli_ct_request *CTrsp;
+
+                outp = (struct lpfc_dmabuf *) cmdiocb->context2;
+                CTrsp = (struct lpfc_sli_ct_request *) outp->virt;
+                if (CTrsp->CommandResponse.bits.CmdRsp ==
+                    be16_to_cpu(SLI_CT_RESPONSE_FS_ACC))
+                        vport->ct_flags |= FC_CT_RFT_ID;
+        }
+        lpfc_cmpl_ct(phba, cmdiocb, rspiocb);
+        return;
+}
+
+static void
 lpfc_cmpl_ct_cmd_rnn_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         struct lpfc_iocbq *rspiocb)
 {
-        lpfc_cmpl_ct_cmd_rft_id(phba, cmdiocb, rspiocb);
+        IOCB_t *irsp = &rspiocb->iocb;
+        struct lpfc_vport *vport = cmdiocb->vport;
+
+        if (irsp->ulpStatus == IOSTAT_SUCCESS) {
+                struct lpfc_dmabuf *outp;
+                struct lpfc_sli_ct_request *CTrsp;
+
+                outp = (struct lpfc_dmabuf *) cmdiocb->context2;
+                CTrsp = (struct lpfc_sli_ct_request *) outp->virt;
+                if (CTrsp->CommandResponse.bits.CmdRsp ==
+                    be16_to_cpu(SLI_CT_RESPONSE_FS_ACC))
+                        vport->ct_flags |= FC_CT_RNN_ID;
+        }
+        lpfc_cmpl_ct(phba, cmdiocb, rspiocb);
         return;
 }
 
@@ -859,7 +933,20 @@ static void
 lpfc_cmpl_ct_cmd_rspn_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                          struct lpfc_iocbq *rspiocb)
 {
-        lpfc_cmpl_ct_cmd_rft_id(phba, cmdiocb, rspiocb);
+        IOCB_t *irsp = &rspiocb->iocb;
+        struct lpfc_vport *vport = cmdiocb->vport;
+
+        if (irsp->ulpStatus == IOSTAT_SUCCESS) {
+                struct lpfc_dmabuf *outp;
+                struct lpfc_sli_ct_request *CTrsp;
+
+                outp = (struct lpfc_dmabuf *) cmdiocb->context2;
+                CTrsp = (struct lpfc_sli_ct_request *) outp->virt;
+                if (CTrsp->CommandResponse.bits.CmdRsp ==
+                    be16_to_cpu(SLI_CT_RESPONSE_FS_ACC))
+                        vport->ct_flags |= FC_CT_RSPN_ID;
+        }
+        lpfc_cmpl_ct(phba, cmdiocb, rspiocb);
         return;
 }
 
@@ -867,7 +954,32 @@ static void
 lpfc_cmpl_ct_cmd_rsnn_nn(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                          struct lpfc_iocbq *rspiocb)
 {
-        lpfc_cmpl_ct_cmd_rft_id(phba, cmdiocb, rspiocb);
+        IOCB_t *irsp = &rspiocb->iocb;
+        struct lpfc_vport *vport = cmdiocb->vport;
+
+        if (irsp->ulpStatus == IOSTAT_SUCCESS) {
+                struct lpfc_dmabuf *outp;
+                struct lpfc_sli_ct_request *CTrsp;
+
+                outp = (struct lpfc_dmabuf *) cmdiocb->context2;
+                CTrsp = (struct lpfc_sli_ct_request *) outp->virt;
+                if (CTrsp->CommandResponse.bits.CmdRsp ==
+                    be16_to_cpu(SLI_CT_RESPONSE_FS_ACC))
+                        vport->ct_flags |= FC_CT_RSNN_NN;
+        }
+        lpfc_cmpl_ct(phba, cmdiocb, rspiocb);
+        return;
+}
+
+static void
+lpfc_cmpl_ct_cmd_da_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+        struct lpfc_vport *vport = cmdiocb->vport;
+
+        /* even if it fails we will act as though it succeeded. */
+        vport->ct_flags = 0;
+        lpfc_cmpl_ct(phba, cmdiocb, rspiocb);
         return;
 }
 
@@ -878,10 +990,17 @@ lpfc_cmpl_ct_cmd_rff_id(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         IOCB_t *irsp = &rspiocb->iocb;
         struct lpfc_vport *vport = cmdiocb->vport;
 
-        if (irsp->ulpStatus != IOSTAT_SUCCESS)
-            vport->fc_flag |= FC_RFF_NOT_SUPPORTED;
+        if (irsp->ulpStatus == IOSTAT_SUCCESS) {
+                struct lpfc_dmabuf *outp;
+                struct lpfc_sli_ct_request *CTrsp;
 
-        lpfc_cmpl_ct_cmd_rft_id(phba, cmdiocb, rspiocb);
+                outp = (struct lpfc_dmabuf *) cmdiocb->context2;
+                CTrsp = (struct lpfc_sli_ct_request *) outp->virt;
+                if (CTrsp->CommandResponse.bits.CmdRsp ==
+                    be16_to_cpu(SLI_CT_RESPONSE_FS_ACC))
+                        vport->ct_flags |= FC_CT_RFF_ID;
+        }
+        lpfc_cmpl_ct(phba, cmdiocb, rspiocb);
         return;
 }
 
@@ -1001,6 +1120,8 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode,
                 bpl->tus.f.bdeSize = RSPN_REQUEST_SZ;
         else if (cmdcode == SLI_CTNS_RSNN_NN)
                 bpl->tus.f.bdeSize = RSNN_REQUEST_SZ;
+        else if (cmdcode == SLI_CTNS_DA_ID)
+                bpl->tus.f.bdeSize = DA_ID_REQUEST_SZ;
         else if (cmdcode == SLI_CTNS_RFF_ID)
                 bpl->tus.f.bdeSize = RFF_REQUEST_SZ;
         else
@@ -1029,31 +1150,34 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode,
         case SLI_CTNS_GFF_ID:
                 CtReq->CommandResponse.bits.CmdRsp =
                         be16_to_cpu(SLI_CTNS_GFF_ID);
-                CtReq->un.gff.PortId = be32_to_cpu(context);
+                CtReq->un.gff.PortId = cpu_to_be32(context);
                 cmpl = lpfc_cmpl_ct_cmd_gff_id;
                 break;
 
         case SLI_CTNS_RFT_ID:
+                vport->ct_flags &= ~FC_CT_RFT_ID;
                 CtReq->CommandResponse.bits.CmdRsp =
                     be16_to_cpu(SLI_CTNS_RFT_ID);
-                CtReq->un.rft.PortId = be32_to_cpu(vport->fc_myDID);
+                CtReq->un.rft.PortId = cpu_to_be32(vport->fc_myDID);
                 CtReq->un.rft.fcpReg = 1;
                 cmpl = lpfc_cmpl_ct_cmd_rft_id;
                 break;
 
         case SLI_CTNS_RNN_ID:
+                vport->ct_flags &= ~FC_CT_RNN_ID;
                 CtReq->CommandResponse.bits.CmdRsp =
                     be16_to_cpu(SLI_CTNS_RNN_ID);
-                CtReq->un.rnn.PortId = be32_to_cpu(vport->fc_myDID);
+                CtReq->un.rnn.PortId = cpu_to_be32(vport->fc_myDID);
                 memcpy(CtReq->un.rnn.wwnn,  &vport->fc_nodename,
                        sizeof (struct lpfc_name));
                 cmpl = lpfc_cmpl_ct_cmd_rnn_id;
                 break;
 
         case SLI_CTNS_RSPN_ID:
+                vport->ct_flags &= ~FC_CT_RSPN_ID;
                 CtReq->CommandResponse.bits.CmdRsp =
                     be16_to_cpu(SLI_CTNS_RSPN_ID);
-                CtReq->un.rspn.PortId = be32_to_cpu(vport->fc_myDID);
+                CtReq->un.rspn.PortId = cpu_to_be32(vport->fc_myDID);
                 size = sizeof(CtReq->un.rspn.symbname);
                 CtReq->un.rspn.len =
                         lpfc_vport_symbolic_port_name(vport,
@@ -1061,6 +1185,7 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode,
                 cmpl = lpfc_cmpl_ct_cmd_rspn_id;
                 break;
         case SLI_CTNS_RSNN_NN:
+                vport->ct_flags &= ~FC_CT_RSNN_NN;
                 CtReq->CommandResponse.bits.CmdRsp =
                     be16_to_cpu(SLI_CTNS_RSNN_NN);
                 memcpy(CtReq->un.rsnn.wwnn, &vport->fc_nodename,
@@ -1071,11 +1196,18 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode,
                         CtReq->un.rsnn.symbname, size);
                 cmpl = lpfc_cmpl_ct_cmd_rsnn_nn;
                 break;
+        case SLI_CTNS_DA_ID:
+                /* Implement DA_ID Nameserver request */
+                CtReq->CommandResponse.bits.CmdRsp =
+                        be16_to_cpu(SLI_CTNS_DA_ID);
+                CtReq->un.da_id.port_id = cpu_to_be32(vport->fc_myDID);
+                cmpl = lpfc_cmpl_ct_cmd_da_id;
+                break;
         case SLI_CTNS_RFF_ID:
-                vport->fc_flag &= ~FC_RFF_NOT_SUPPORTED;
+                vport->ct_flags &= ~FC_CT_RFF_ID;
                 CtReq->CommandResponse.bits.CmdRsp =
                     be16_to_cpu(SLI_CTNS_RFF_ID);
-                CtReq->un.rff.PortId = be32_to_cpu(vport->fc_myDID);;
+                CtReq->un.rff.PortId = cpu_to_be32(vport->fc_myDID);;
                 CtReq->un.rff.fbits = FC4_FEATURE_INIT;
                 CtReq->un.rff.type_code = FC_FCP_DATA;
                 cmpl = lpfc_cmpl_ct_cmd_rff_id;
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index d6a98bc970ff..783d1eea13ef 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -43,6 +43,7 @@
 #include "lpfc_crtn.h"
 #include "lpfc_vport.h"
 #include "lpfc_version.h"
+#include "lpfc_compat.h"
 #include "lpfc_debugfs.h"
 
 #ifdef CONFIG_LPFC_DEBUG_FS
@@ -75,18 +76,18 @@ module_param(lpfc_debugfs_enable, int, 0);
 MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");
 
 /* This MUST be a power of 2 */
-static int lpfc_debugfs_max_disc_trc = 0;
+static int lpfc_debugfs_max_disc_trc;
 module_param(lpfc_debugfs_max_disc_trc, int, 0);
 MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
         "Set debugfs discovery trace depth");
 
 /* This MUST be a power of 2 */
-static int lpfc_debugfs_max_slow_ring_trc = 0;
+static int lpfc_debugfs_max_slow_ring_trc;
 module_param(lpfc_debugfs_max_slow_ring_trc, int, 0);
 MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
         "Set debugfs slow ring trace depth");
 
-static int lpfc_debugfs_mask_disc_trc = 0;
+int lpfc_debugfs_mask_disc_trc;
 module_param(lpfc_debugfs_mask_disc_trc, int, 0);
 MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
         "Set debugfs discovery trace mask");
@@ -100,8 +101,11 @@ MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
 #define LPFC_NODELIST_SIZE 8192
 #define LPFC_NODELIST_ENTRY_SIZE 120
 
-/* dumpslim output buffer size */
-#define LPFC_DUMPSLIM_SIZE 4096
+/* dumpHBASlim output buffer size */
+#define LPFC_DUMPHBASLIM_SIZE 4096
+
+/* dumpHostSlim output buffer size */
+#define LPFC_DUMPHOSTSLIM_SIZE 4096
 
 /* hbqinfo output buffer size */
 #define LPFC_HBQINFO_SIZE 8192
@@ -243,16 +247,17 @@ lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
         raw_index = phba->hbq_get[i];
         getidx = le32_to_cpu(raw_index);
         len +=  snprintf(buf+len, size-len,
-                "entrys:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
-                hbqs->entry_count, hbqs->hbqPutIdx, hbqs->next_hbqPutIdx,
-                hbqs->local_hbqGetIdx, getidx);
+                "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
+                hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
+                hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
 
         hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
         for (j=0; j<hbqs->entry_count; j++) {
                 len +=  snprintf(buf+len, size-len,
                         "%03d: %08x %04x %05x ", j,
-                        hbqe->bde.addrLow, hbqe->bde.tus.w, hbqe->buffer_tag);
-
+                        le32_to_cpu(hbqe->bde.addrLow),
+                        le32_to_cpu(hbqe->bde.tus.w),
+                        le32_to_cpu(hbqe->buffer_tag));
                 i = 0;
                 found = 0;
 
@@ -276,7 +281,7 @@ lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
                 list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
                         hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
                         phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
-                        if (phys == hbqe->bde.addrLow) {
+                        if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
                                 len +=  snprintf(buf+len, size-len,
                                         "Buf%d: %p %06x\n", i,
                                         hbq_buf->dbuf.virt, hbq_buf->tag);
@@ -297,18 +302,58 @@ skipit:
         return len;
 }
 
+static int lpfc_debugfs_last_hba_slim_off;
+
+static int
+lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
+{
+        int len = 0;
+        int i, off;
+        uint32_t *ptr;
+        char buffer[1024];
+
+        off = 0;
+        spin_lock_irq(&phba->hbalock);
+
+        len +=  snprintf(buf+len, size-len, "HBA SLIM\n");
+        lpfc_memcpy_from_slim(buffer,
+                ((uint8_t *)phba->MBslimaddr) + lpfc_debugfs_last_hba_slim_off,
+                1024);
+
+        ptr = (uint32_t *)&buffer[0];
+        off = lpfc_debugfs_last_hba_slim_off;
+
+        /* Set it up for the next time */
+        lpfc_debugfs_last_hba_slim_off += 1024;
+        if (lpfc_debugfs_last_hba_slim_off >= 4096)
+                lpfc_debugfs_last_hba_slim_off = 0;
+
+        i = 1024;
+        while (i > 0) {
+                len +=  snprintf(buf+len, size-len,
+                "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
+                off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
+                *(ptr+5), *(ptr+6), *(ptr+7));
+                ptr += 8;
+                i -= (8 * sizeof(uint32_t));
+                off += (8 * sizeof(uint32_t));
+        }
+
+        spin_unlock_irq(&phba->hbalock);
+        return len;
+}
+
 static int
-lpfc_debugfs_dumpslim_data(struct lpfc_hba *phba, char *buf, int size)
+lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
 {
         int len = 0;
-        int cnt, i, off;
+        int i, off;
         uint32_t word0, word1, word2, word3;
         uint32_t *ptr;
         struct lpfc_pgp *pgpp;
         struct lpfc_sli *psli = &phba->sli;
         struct lpfc_sli_ring *pring;
 
-        cnt = LPFC_DUMPSLIM_SIZE;
         off = 0;
         spin_lock_irq(&phba->hbalock);
 
@@ -620,7 +665,34 @@ out:
 }
 
 static int
-lpfc_debugfs_dumpslim_open(struct inode *inode, struct file *file)
+lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
+{
+        struct lpfc_hba *phba = inode->i_private;
+        struct lpfc_debug *debug;
+        int rc = -ENOMEM;
+
+        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
+        if (!debug)
+                goto out;
+
+        /* Round to page boundry */
+        debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
+        if (!debug->buffer) {
+                kfree(debug);
+                goto out;
+        }
+
+        debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
+                LPFC_DUMPHBASLIM_SIZE);
+        file->private_data = debug;
+
+        rc = 0;
+out:
+        return rc;
+}
+
+static int
+lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
 {
         struct lpfc_hba *phba = inode->i_private;
         struct lpfc_debug *debug;
@@ -631,14 +703,14 @@ lpfc_debugfs_dumpslim_open(struct inode *inode, struct file *file)
                 goto out;
 
         /* Round to page boundry */
-        debug->buffer = kmalloc(LPFC_DUMPSLIM_SIZE, GFP_KERNEL);
+        debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
         if (!debug->buffer) {
                 kfree(debug);
                 goto out;
         }
 
-        debug->len = lpfc_debugfs_dumpslim_data(phba, debug->buffer,
-                LPFC_DUMPSLIM_SIZE);
+        debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
+                LPFC_DUMPHOSTSLIM_SIZE);
         file->private_data = debug;
 
         rc = 0;
@@ -741,10 +813,19 @@ static struct file_operations lpfc_debugfs_op_hbqinfo = {
         .release =      lpfc_debugfs_release,
 };
 
-#undef lpfc_debugfs_op_dumpslim
-static struct file_operations lpfc_debugfs_op_dumpslim = {
+#undef lpfc_debugfs_op_dumpHBASlim
+static struct file_operations lpfc_debugfs_op_dumpHBASlim = {
+        .owner =        THIS_MODULE,
+        .open =         lpfc_debugfs_dumpHBASlim_open,
+        .llseek =       lpfc_debugfs_lseek,
+        .read =         lpfc_debugfs_read,
+        .release =      lpfc_debugfs_release,
+};
+
+#undef lpfc_debugfs_op_dumpHostSlim
+static struct file_operations lpfc_debugfs_op_dumpHostSlim = {
         .owner =        THIS_MODULE,
-        .open =         lpfc_debugfs_dumpslim_open,
+        .open =         lpfc_debugfs_dumpHostSlim_open,
         .llseek =       lpfc_debugfs_lseek,
         .read =         lpfc_debugfs_read,
         .release =      lpfc_debugfs_release,
@@ -812,15 +893,27 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
                         goto debug_failed;
                 }
 
-                /* Setup dumpslim */
-                snprintf(name, sizeof(name), "dumpslim");
-                phba->debug_dumpslim =
+                /* Setup dumpHBASlim */
+                snprintf(name, sizeof(name), "dumpHBASlim");
+                phba->debug_dumpHBASlim =
+                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
+                                 phba->hba_debugfs_root,
+                                 phba, &lpfc_debugfs_op_dumpHBASlim);
+                if (!phba->debug_dumpHBASlim) {
+                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
+                                "0409 Cannot create debugfs dumpHBASlim\n");
+                        goto debug_failed;
+                }
+
+                /* Setup dumpHostSlim */
+                snprintf(name, sizeof(name), "dumpHostSlim");
+                phba->debug_dumpHostSlim =
                         debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
                                  phba->hba_debugfs_root,
-                                 phba, &lpfc_debugfs_op_dumpslim);
-                if (!phba->debug_dumpslim) {
+                                 phba, &lpfc_debugfs_op_dumpHostSlim);
+                if (!phba->debug_dumpHostSlim) {
                         lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
-                                "0409 Cannot create debugfs dumpslim\n");
+                                "0409 Cannot create debugfs dumpHostSlim\n");
                         goto debug_failed;
                 }
 
@@ -970,9 +1063,13 @@ lpfc_debugfs_terminate(struct lpfc_vport *vport)
                         debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
                         phba->debug_hbqinfo = NULL;
                 }
-                if (phba->debug_dumpslim) {
-                        debugfs_remove(phba->debug_dumpslim); /* dumpslim */
-                        phba->debug_dumpslim = NULL;
+                if (phba->debug_dumpHBASlim) {
+                        debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
+                        phba->debug_dumpHBASlim = NULL;
+                }
+                if (phba->debug_dumpHostSlim) {
+                        debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
+                        phba->debug_dumpHostSlim = NULL;
                 }
                 if (phba->slow_ring_trc) {
                         kfree(phba->slow_ring_trc);
diff --git a/drivers/scsi/lpfc/lpfc_disc.h b/drivers/scsi/lpfc/lpfc_disc.h
index aacac9ac5381..cfe81c50529a 100644
--- a/drivers/scsi/lpfc/lpfc_disc.h
+++ b/drivers/scsi/lpfc/lpfc_disc.h
@@ -36,7 +36,6 @@ enum lpfc_work_type {
         LPFC_EVT_WARM_START,
         LPFC_EVT_KILL,
         LPFC_EVT_ELS_RETRY,
-        LPFC_EVT_DEV_LOSS_DELAY,
         LPFC_EVT_DEV_LOSS,
 };
 
@@ -92,6 +91,7 @@ struct lpfc_nodelist {
 #define NLP_LOGO_SND       0x100        /* sent LOGO request for this entry */
 #define NLP_RNID_SND       0x400        /* sent RNID request for this entry */
 #define NLP_ELS_SND_MASK   0x7e0        /* sent ELS request for this entry */
+#define NLP_DEFER_RM       0x10000      /* Remove this ndlp if no longer used */
 #define NLP_DELAY_TMO      0x20000      /* delay timeout is running for node */
 #define NLP_NPR_2B_DISC    0x40000      /* node is included in num_disc_nodes */
 #define NLP_RCV_PLOGI      0x80000      /* Rcv'ed PLOGI from remote system */
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 8085900635d4..c6b739dc6bc3 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -18,7 +18,7 @@
  * more details, a copy of which can be found in the file COPYING  *
  * included with this package.                                     *
  *******************************************************************/
-
+/* See Fibre Channel protocol T11 FC-LS for details */
 #include <linux/blkdev.h>
 #include <linux/pci.h>
 #include <linux/interrupt.h>
@@ -42,6 +42,14 @@ static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
                           struct lpfc_iocbq *);
 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
                         struct lpfc_iocbq *);
+static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
+static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
+                                struct lpfc_nodelist *ndlp, uint8_t retry);
+static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
+                                  struct lpfc_iocbq *iocb);
+static void lpfc_register_new_vport(struct lpfc_hba *phba,
+                                    struct lpfc_vport *vport,
+                                    struct lpfc_nodelist *ndlp);
 
 static int lpfc_max_els_tries = 3;
 
@@ -109,14 +117,11 @@ lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
 
         /* fill in BDEs for command */
         /* Allocate buffer for command payload */
-        if (((pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL)) == 0) ||
-            ((pcmd->virt = lpfc_mbuf_alloc(phba,
-                                           MEM_PRI, &(pcmd->phys))) == 0)) {
-                kfree(pcmd);
-
-                lpfc_sli_release_iocbq(phba, elsiocb);
-                return NULL;
-        }
+        pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+        if (pcmd)
+                pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
+        if (!pcmd || !pcmd->virt)
+                goto els_iocb_free_pcmb_exit;
 
         INIT_LIST_HEAD(&pcmd->list);
 
@@ -126,13 +131,8 @@ lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
                 if (prsp)
                         prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
                                                      &prsp->phys);
-                if (prsp == 0 || prsp->virt == 0) {
-                        kfree(prsp);
-                        lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
-                        kfree(pcmd);
-                        lpfc_sli_release_iocbq(phba, elsiocb);
-                        return NULL;
-                }
+                if (!prsp || !prsp->virt)
+                        goto els_iocb_free_prsp_exit;
                 INIT_LIST_HEAD(&prsp->list);
         } else {
                 prsp = NULL;
@@ -143,15 +143,8 @@ lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
         if (pbuflist)
                 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
                                                  &pbuflist->phys);
-        if (pbuflist == 0 || pbuflist->virt == 0) {
-                lpfc_sli_release_iocbq(phba, elsiocb);
-                lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
-                lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
-                kfree(pcmd);
-                kfree(prsp);
-                kfree(pbuflist);
-                return NULL;
-        }
+        if (!pbuflist || !pbuflist->virt)
+                goto els_iocb_free_pbuf_exit;
 
         INIT_LIST_HEAD(&pbuflist->list);
 
@@ -196,7 +189,10 @@ lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
                 bpl->tus.w = le32_to_cpu(bpl->tus.w);
         }
 
+        /* prevent preparing iocb with NULL ndlp reference */
         elsiocb->context1 = lpfc_nlp_get(ndlp);
+        if (!elsiocb->context1)
+                goto els_iocb_free_pbuf_exit;
         elsiocb->context2 = pcmd;
         elsiocb->context3 = pbuflist;
         elsiocb->retry = retry;
@@ -222,8 +218,20 @@ lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
                                  cmdSize);
         }
         return elsiocb;
-}
 
+els_iocb_free_pbuf_exit:
+        lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
+        kfree(pbuflist);
+
+els_iocb_free_prsp_exit:
+        lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
+        kfree(prsp);
+
+els_iocb_free_pcmb_exit:
+        kfree(pcmd);
+        lpfc_sli_release_iocbq(phba, elsiocb);
+        return NULL;
+}
 
 static int
 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
@@ -234,40 +242,53 @@ lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
         struct lpfc_nodelist *ndlp;
         struct serv_parm *sp;
         int rc;
+        int err = 0;
 
         sp = &phba->fc_fabparam;
         ndlp = lpfc_findnode_did(vport, Fabric_DID);
-        if (!ndlp)
+        if (!ndlp) {
+                err = 1;
                 goto fail;
+        }
 
         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
-        if (!mbox)
+        if (!mbox) {
+                err = 2;
                 goto fail;
+        }
 
         vport->port_state = LPFC_FABRIC_CFG_LINK;
         lpfc_config_link(phba, mbox);
         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         mbox->vport = vport;
 
-        rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
-        if (rc == MBX_NOT_FINISHED)
+        rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+        if (rc == MBX_NOT_FINISHED) {
+                err = 3;
                 goto fail_free_mbox;
+        }
 
         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
-        if (!mbox)
+        if (!mbox) {
+                err = 4;
                 goto fail;
+        }
         rc = lpfc_reg_login(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
                             0);
-        if (rc)
+        if (rc) {
+                err = 5;
                 goto fail_free_mbox;
+        }
 
         mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
         mbox->vport = vport;
         mbox->context2 = lpfc_nlp_get(ndlp);
 
-        rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
-        if (rc == MBX_NOT_FINISHED)
+        rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+        if (rc == MBX_NOT_FINISHED) {
+                err = 6;
                 goto fail_issue_reg_login;
+        }
 
         return 0;
 
@@ -282,7 +303,7 @@ fail_free_mbox:
 fail:
         lpfc_vport_set_state(vport, FC_VPORT_FAILED);
         lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
-                "0249 Cannot issue Register Fabric login\n");
+                "0249 Cannot issue Register Fabric login: Err %d\n", err);
         return -ENXIO;
 }
 
@@ -370,11 +391,12 @@ lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                 }
                 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
                         lpfc_mbx_unreg_vpi(vport);
+                        spin_lock_irq(shost->host_lock);
                         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+                        spin_unlock_irq(shost->host_lock);
                 }
         }
 
-        ndlp->nlp_sid = irsp->un.ulpWord[4] & Mask_DID;
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
 
         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
@@ -429,8 +451,7 @@ lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 
                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
                 mbox->vport = vport;
-                rc = lpfc_sli_issue_mbox(phba, mbox,
-                                         MBX_NOWAIT | MBX_STOP_IOCB);
+                rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
                 if (rc == MBX_NOT_FINISHED) {
                         mempool_free(mbox, phba->mbox_mem_pool);
                         goto fail;
@@ -463,6 +484,9 @@ lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                 lpfc_nlp_put(ndlp);
         }
 
+        /* If we are pt2pt with another NPort, force NPIV off! */
+        phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
+
         spin_lock_irq(shost->host_lock);
         vport->fc_flag |= FC_PT2PT;
         spin_unlock_irq(shost->host_lock);
@@ -488,6 +512,9 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 
         /* Check to see if link went down during discovery */
         if (lpfc_els_chk_latt(vport)) {
+                /* One additional decrement on node reference count to
+                 * trigger the release of the node
+                 */
                 lpfc_nlp_put(ndlp);
                 goto out;
         }
@@ -562,8 +589,13 @@ flogifail:
 
                 /* Start discovery */
                 lpfc_disc_start(vport);
+        } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
+                        ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
+                        (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) &&
+                        (phba->link_state != LPFC_CLEAR_LA)) {
+                /* If FLOGI failed enable link interrupt. */
+                lpfc_issue_clear_la(phba, vport);
         }
-
 out:
         lpfc_els_free_iocb(phba, cmdiocb);
 }
@@ -685,6 +717,9 @@ lpfc_initial_flogi(struct lpfc_vport *vport)
         struct lpfc_hba *phba = vport->phba;
         struct lpfc_nodelist *ndlp;
 
+        vport->port_state = LPFC_FLOGI;
+        lpfc_set_disctmo(vport);
+
         /* First look for the Fabric ndlp */
         ndlp = lpfc_findnode_did(vport, Fabric_DID);
         if (!ndlp) {
@@ -696,7 +731,11 @@ lpfc_initial_flogi(struct lpfc_vport *vport)
         } else {
                 lpfc_dequeue_node(vport, ndlp);
         }
+
         if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
+                /* This decrement of reference count to node shall kick off
+                 * the release of the node.
+                 */
                 lpfc_nlp_put(ndlp);
         }
         return 1;
@@ -720,11 +759,16 @@ lpfc_initial_fdisc(struct lpfc_vport *vport)
                 lpfc_dequeue_node(vport, ndlp);
         }
         if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
+                /* decrement node reference count to trigger the release of
+                 * the node.
+                 */
                 lpfc_nlp_put(ndlp);
+                return 0;
         }
         return 1;
 }
-static void
+
+void
 lpfc_more_plogi(struct lpfc_vport *vport)
 {
         int sentplogi;
@@ -752,6 +796,8 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
 {
         struct lpfc_vport    *vport = ndlp->vport;
         struct lpfc_nodelist *new_ndlp;
+        struct lpfc_rport_data *rdata;
+        struct fc_rport *rport;
         struct serv_parm *sp;
         uint8_t  name[sizeof(struct lpfc_name)];
         uint32_t rc;
@@ -788,11 +834,34 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
         lpfc_unreg_rpi(vport, new_ndlp);
         new_ndlp->nlp_DID = ndlp->nlp_DID;
         new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
+
+        if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
+                new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
+        ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+
         lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
 
         /* Move this back to NPR state */
-        if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0)
+        if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
+                /* The new_ndlp is replacing ndlp totally, so we need
+                 * to put ndlp on UNUSED list and try to free it.
+                 */
+
+                /* Fix up the rport accordingly */
+                rport =  ndlp->rport;
+                if (rport) {
+                        rdata = rport->dd_data;
+                        if (rdata->pnode == ndlp) {
+                                lpfc_nlp_put(ndlp);
+                                ndlp->rport = NULL;
+                                rdata->pnode = lpfc_nlp_get(new_ndlp);
+                                new_ndlp->rport = rport;
+                        }
+                        new_ndlp->nlp_type = ndlp->nlp_type;
+                }
+
                 lpfc_drop_node(vport, ndlp);
+        }
         else {
                 lpfc_unreg_rpi(vport, ndlp);
                 ndlp->nlp_DID = 0; /* Two ndlps cannot have the same did */
@@ -801,6 +870,27 @@ lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
         return new_ndlp;
 }
 
+void
+lpfc_end_rscn(struct lpfc_vport *vport)
+{
+        struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+        if (vport->fc_flag & FC_RSCN_MODE) {
+                /*
+                 * Check to see if more RSCNs came in while we were
+                 * processing this one.
+                 */
+                if (vport->fc_rscn_id_cnt ||
+                    (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
+                        lpfc_els_handle_rscn(vport);
+                else {
+                        spin_lock_irq(shost->host_lock);
+                        vport->fc_flag &= ~FC_RSCN_MODE;
+                        spin_unlock_irq(shost->host_lock);
+                }
+        }
+}
+
 static void
 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                     struct lpfc_iocbq *rspiocb)
@@ -871,13 +961,6 @@ lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         goto out;
                 }
                 /* PLOGI failed */
-                if (ndlp->nlp_DID == NameServer_DID) {
-                        lpfc_vport_set_state(vport, FC_VPORT_FAILED);
-                        lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
-                                         "0250 Nameserver login error: "
-                                         "0x%x / 0x%x\n",
-                                         irsp->ulpStatus, irsp->un.ulpWord[4]);
-                }
                 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
                 if (lpfc_error_lost_link(irsp)) {
                         rc = NLP_STE_FREED_NODE;
@@ -905,20 +988,7 @@ lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         spin_unlock_irq(shost->host_lock);
 
                         lpfc_can_disctmo(vport);
-                        if (vport->fc_flag & FC_RSCN_MODE) {
-                                /*
-                                 * Check to see if more RSCNs came in while
-                                 * we were processing this one.
-                                 */
-                                if ((vport->fc_rscn_id_cnt == 0) &&
-                                    (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
-                                        spin_lock_irq(shost->host_lock);
-                                        vport->fc_flag &= ~FC_RSCN_MODE;
-                                        spin_unlock_irq(shost->host_lock);
-                                } else {
-                                        lpfc_els_handle_rscn(vport);
-                                }
-                        }
+                        lpfc_end_rscn(vport);
                 }
         }
 
@@ -933,6 +1003,7 @@ lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
         struct lpfc_hba  *phba = vport->phba;
         struct serv_parm *sp;
         IOCB_t *icmd;
+        struct lpfc_nodelist *ndlp;
         struct lpfc_iocbq *elsiocb;
         struct lpfc_sli_ring *pring;
         struct lpfc_sli *psli;
@@ -943,8 +1014,11 @@ lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
         psli = &phba->sli;
         pring = &psli->ring[LPFC_ELS_RING];     /* ELS ring */
 
+        ndlp = lpfc_findnode_did(vport, did);
+        /* If ndlp if not NULL, we will bump the reference count on it */
+
         cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
-        elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, NULL, did,
+        elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
                                      ELS_CMD_PLOGI);
         if (!elsiocb)
                 return 1;
@@ -1109,7 +1183,7 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         return 0;
 }
 
-static void
+void
 lpfc_more_adisc(struct lpfc_vport *vport)
 {
         int sentadisc;
@@ -1134,8 +1208,6 @@ lpfc_more_adisc(struct lpfc_vport *vport)
 static void
 lpfc_rscn_disc(struct lpfc_vport *vport)
 {
-        struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
-
         lpfc_can_disctmo(vport);
 
         /* RSCN discovery */
@@ -1144,19 +1216,7 @@ lpfc_rscn_disc(struct lpfc_vport *vport)
                 if (lpfc_els_disc_plogi(vport))
                         return;
 
-        if (vport->fc_flag & FC_RSCN_MODE) {
-                /* Check to see if more RSCNs came in while we were
-                 * processing this one.
-                 */
-                if ((vport->fc_rscn_id_cnt == 0) &&
-                    (!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
-                        spin_lock_irq(shost->host_lock);
-                        vport->fc_flag &= ~FC_RSCN_MODE;
-                        spin_unlock_irq(shost->host_lock);
-                } else {
-                        lpfc_els_handle_rscn(vport);
-                }
-        }
+        lpfc_end_rscn(vport);
 }
 
 static void
@@ -1413,6 +1473,13 @@ lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         psli = &phba->sli;
         pring = &psli->ring[LPFC_ELS_RING];
 
+        spin_lock_irq(shost->host_lock);
+        if (ndlp->nlp_flag & NLP_LOGO_SND) {
+                spin_unlock_irq(shost->host_lock);
+                return 0;
+        }
+        spin_unlock_irq(shost->host_lock);
+
         cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                                      ndlp->nlp_DID, ELS_CMD_LOGO);
@@ -1499,6 +1566,9 @@ lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
                                      ndlp->nlp_DID, ELS_CMD_SCR);
 
         if (!elsiocb) {
+                /* This will trigger the release of the node just
+                 * allocated
+                 */
                 lpfc_nlp_put(ndlp);
                 return 1;
         }
@@ -1520,10 +1590,17 @@ lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
         phba->fc_stat.elsXmitSCR++;
         elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
+                /* The additional lpfc_nlp_put will cause the following
+                 * lpfc_els_free_iocb routine to trigger the rlease of
+                 * the node.
+                 */
                 lpfc_nlp_put(ndlp);
                 lpfc_els_free_iocb(phba, elsiocb);
                 return 1;
         }
+        /* This will cause the callback-function lpfc_cmpl_els_cmd to
+         * trigger the release of node.
+         */
         lpfc_nlp_put(ndlp);
         return 0;
 }
@@ -1555,6 +1632,9 @@ lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
         elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
                                      ndlp->nlp_DID, ELS_CMD_RNID);
         if (!elsiocb) {
+                /* This will trigger the release of the node just
+                 * allocated
+                 */
                 lpfc_nlp_put(ndlp);
                 return 1;
         }
@@ -1591,35 +1671,21 @@ lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
         phba->fc_stat.elsXmitFARPR++;
         elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
         if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
+                /* The additional lpfc_nlp_put will cause the following
+                 * lpfc_els_free_iocb routine to trigger the release of
+                 * the node.
+                 */
                 lpfc_nlp_put(ndlp);
                 lpfc_els_free_iocb(phba, elsiocb);
                 return 1;
         }
+        /* This will cause the callback-function lpfc_cmpl_els_cmd to
+         * trigger the release of the node.
+         */
         lpfc_nlp_put(ndlp);
         return 0;
 }
 
-static void
-lpfc_end_rscn(struct lpfc_vport *vport)
-{
-        struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
-
-        if (vport->fc_flag & FC_RSCN_MODE) {
-                /*
-                 * Check to see if more RSCNs came in while we were
-                 * processing this one.
-                 */
-                if (vport->fc_rscn_id_cnt ||
-                    (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
-                        lpfc_els_handle_rscn(vport);
-                else {
-                        spin_lock_irq(shost->host_lock);
-                        vport->fc_flag &= ~FC_RSCN_MODE;
-                        spin_unlock_irq(shost->host_lock);
-                }
-        }
-}
-
 void
 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
 {
@@ -1675,7 +1741,10 @@ lpfc_els_retry_delay(unsigned long ptr)
                 return;
         }
 
-        evtp->evt_arg1  = ndlp;
+        /* We need to hold the node by incrementing the reference
+         * count until the queued work is done
+         */
+        evtp->evt_arg1  = lpfc_nlp_get(ndlp);
         evtp->evt       = LPFC_EVT_ELS_RETRY;
         list_add_tail(&evtp->evt_listp, &phba->work_list);
         if (phba->work_wait)
@@ -1759,6 +1828,7 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         uint32_t *elscmd;
         struct ls_rjt stat;
         int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
+        int logerr = 0;
         uint32_t cmd = 0;
         uint32_t did;
 
@@ -1815,6 +1885,7 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         break;
 
                 case IOERR_NO_RESOURCES:
+                        logerr = 1; /* HBA out of resources */
                         retry = 1;
                         if (cmdiocb->retry > 100)
                                 delay = 100;
@@ -1843,6 +1914,7 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 
         case IOSTAT_NPORT_BSY:
         case IOSTAT_FABRIC_BSY:
+                logerr = 1; /* Fabric / Remote NPort out of resources */
                 retry = 1;
                 break;
 
@@ -1923,6 +1995,15 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         if (did == FDMI_DID)
                 retry = 1;
 
+        if ((cmd == ELS_CMD_FLOGI) &&
+            (phba->fc_topology != TOPOLOGY_LOOP)) {
+                /* FLOGI retry policy */
+                retry = 1;
+                maxretry = 48;
+                if (cmdiocb->retry >= 32)
+                        delay = 1000;
+        }
+
         if ((++cmdiocb->retry) >= maxretry) {
                 phba->fc_stat.elsRetryExceeded++;
                 retry = 0;
@@ -2006,11 +2087,46 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 }
         }
         /* No retry ELS command <elsCmd> to remote NPORT <did> */
-        lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+        if (logerr) {
+                lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                         "0137 No retry ELS command x%x to remote "
+                         "NPORT x%x: Out of Resources: Error:x%x/%x\n",
+                         cmd, did, irsp->ulpStatus,
+                         irsp->un.ulpWord[4]);
+        }
+        else {
+                lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
                          "0108 No retry ELS command x%x to remote "
                          "NPORT x%x Retried:%d Error:x%x/%x\n",
                          cmd, did, cmdiocb->retry, irsp->ulpStatus,
                          irsp->un.ulpWord[4]);
+        }
+        return 0;
+}
+
+static int
+lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
+{
+        struct lpfc_dmabuf *buf_ptr;
+
+        /* Free the response before processing the command.  */
+        if (!list_empty(&buf_ptr1->list)) {
+                list_remove_head(&buf_ptr1->list, buf_ptr,
+                                 struct lpfc_dmabuf,
+                                 list);
+                lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
+                kfree(buf_ptr);
+        }
+        lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
+        kfree(buf_ptr1);
+        return 0;
+}
+
+static int
+lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
+{
+        lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
+        kfree(buf_ptr);
         return 0;
 }
 
@@ -2018,30 +2134,63 @@ int
 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
 {
         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
+        struct lpfc_nodelist *ndlp;
 
-        if (elsiocb->context1) {
-                lpfc_nlp_put(elsiocb->context1);
+        ndlp = (struct lpfc_nodelist *)elsiocb->context1;
+        if (ndlp) {
+                if (ndlp->nlp_flag & NLP_DEFER_RM) {
+                        lpfc_nlp_put(ndlp);
+
+                        /* If the ndlp is not being used by another discovery
+                         * thread, free it.
+                         */
+                        if (!lpfc_nlp_not_used(ndlp)) {
+                                /* If ndlp is being used by another discovery
+                                 * thread, just clear NLP_DEFER_RM
+                                 */
+                                ndlp->nlp_flag &= ~NLP_DEFER_RM;
+                        }
+                }
+                else
+                        lpfc_nlp_put(ndlp);
                 elsiocb->context1 = NULL;
         }
         /* context2  = cmd,  context2->next = rsp, context3 = bpl */
         if (elsiocb->context2) {
-                buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
-                /* Free the response before processing the command.  */
-                if (!list_empty(&buf_ptr1->list)) {
-                        list_remove_head(&buf_ptr1->list, buf_ptr,
-                                         struct lpfc_dmabuf,
-                                         list);
-                        lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
-                        kfree(buf_ptr);
+                if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
+                        /* Firmware could still be in progress of DMAing
+                         * payload, so don't free data buffer till after
+                         * a hbeat.
+                         */
+                        elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
+                        buf_ptr = elsiocb->context2;
+                        elsiocb->context2 = NULL;
+                        if (buf_ptr) {
+                                buf_ptr1 = NULL;
+                                spin_lock_irq(&phba->hbalock);
+                                if (!list_empty(&buf_ptr->list)) {
+                                        list_remove_head(&buf_ptr->list,
+                                                buf_ptr1, struct lpfc_dmabuf,
+                                                list);
+                                        INIT_LIST_HEAD(&buf_ptr1->list);
+                                        list_add_tail(&buf_ptr1->list,
+                                                &phba->elsbuf);
+                                        phba->elsbuf_cnt++;
+                                }
+                                INIT_LIST_HEAD(&buf_ptr->list);
+                                list_add_tail(&buf_ptr->list, &phba->elsbuf);
+                                phba->elsbuf_cnt++;
+                                spin_unlock_irq(&phba->hbalock);
+                        }
+                } else {
+                        buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
+                        lpfc_els_free_data(phba, buf_ptr1);
                 }
-                lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
-                kfree(buf_ptr1);
         }
 
         if (elsiocb->context3) {
                 buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
-                lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
-                kfree(buf_ptr);
+                lpfc_els_free_bpl(phba, buf_ptr);
         }
         lpfc_sli_release_iocbq(phba, elsiocb);
         return 0;
@@ -2065,15 +2214,20 @@ lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                          "Data: x%x x%x x%x\n",
                          ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
                          ndlp->nlp_rpi);
-        switch (ndlp->nlp_state) {
-        case NLP_STE_UNUSED_NODE:       /* node is just allocated */
-                lpfc_drop_node(vport, ndlp);
-                break;
-        case NLP_STE_NPR_NODE:          /* NPort Recovery mode */
-                lpfc_unreg_rpi(vport, ndlp);
-                break;
-        default:
-                break;
+
+        if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
+                /* NPort Recovery mode or node is just allocated */
+                if (!lpfc_nlp_not_used(ndlp)) {
+                        /* If the ndlp is being used by another discovery
+                         * thread, just unregister the RPI.
+                         */
+                        lpfc_unreg_rpi(vport, ndlp);
+                } else {
+                        /* Indicate the node has already released, should
+                         * not reference to it from within lpfc_els_free_iocb.
+                         */
+                        cmdiocb->context1 = NULL;
+                }
         }
         lpfc_els_free_iocb(phba, cmdiocb);
         return;
@@ -2089,7 +2243,14 @@ lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
         lpfc_mbuf_free(phba, mp->virt, mp->phys);
         kfree(mp);
         mempool_free(pmb, phba->mbox_mem_pool);
-        lpfc_nlp_put(ndlp);
+        if (ndlp) {
+                lpfc_nlp_put(ndlp);
+                /* This is the end of the default RPI cleanup logic for this
+                 * ndlp. If no other discovery threads are using this ndlp.
+                 * we should free all resources associated with it.
+                 */
+                lpfc_nlp_not_used(ndlp);
+        }
         return;
 }
 
@@ -2100,15 +2261,29 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
         struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
         struct Scsi_Host  *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
-        IOCB_t *irsp;
+        IOCB_t  *irsp;
+        uint8_t *pcmd;
         LPFC_MBOXQ_t *mbox = NULL;
         struct lpfc_dmabuf *mp = NULL;
+        uint32_t ls_rjt = 0;
 
         irsp = &rspiocb->iocb;
 
         if (cmdiocb->context_un.mbox)
                 mbox = cmdiocb->context_un.mbox;
 
+        /* First determine if this is a LS_RJT cmpl. Note, this callback
+         * function can have cmdiocb->contest1 (ndlp) field set to NULL.
+         */
+        pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
+        if (ndlp && (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
+                /* A LS_RJT associated with Default RPI cleanup has its own
+                 * seperate code path.
+                 */
+                if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
+                        ls_rjt = 1;
+        }
+
         /* Check to see if link went down during discovery */
         if (!ndlp || lpfc_els_chk_latt(vport)) {
                 if (mbox) {
@@ -2119,6 +2294,15 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         }
                         mempool_free(mbox, phba->mbox_mem_pool);
                 }
+                if (ndlp && (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
+                        if (lpfc_nlp_not_used(ndlp)) {
+                                ndlp = NULL;
+                                /* Indicate the node has already released,
+                                 * should not reference to it from within
+                                 * the routine lpfc_els_free_iocb.
+                                 */
+                                cmdiocb->context1 = NULL;
+                        }
                 goto out;
         }
 
@@ -2150,20 +2334,39 @@ lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                                 lpfc_nlp_set_state(vport, ndlp,
                                            NLP_STE_REG_LOGIN_ISSUE);
                         }
-                        if (lpfc_sli_issue_mbox(phba, mbox,
-                                                (MBX_NOWAIT | MBX_STOP_IOCB))
+                        if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
                             != MBX_NOT_FINISHED) {
                                 goto out;
                         }
-                        lpfc_nlp_put(ndlp);
-                        /* NOTE: we should have messages for unsuccessful
-                           reglogin */
+
+                        /* ELS rsp: Cannot issue reg_login for <NPortid> */
+                        lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                                "0138 ELS rsp: Cannot issue reg_login for x%x "
+                                "Data: x%x x%x x%x\n",
+                                ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+                                ndlp->nlp_rpi);
+
+                        if (lpfc_nlp_not_used(ndlp)) {
+                                ndlp = NULL;
+                                /* Indicate node has already been released,
+                                 * should not reference to it from within
+                                 * the routine lpfc_els_free_iocb.
+                                 */
+                                cmdiocb->context1 = NULL;
+                        }
                 } else {
                         /* Do not drop node for lpfc_els_abort'ed ELS cmds */
                         if (!lpfc_error_lost_link(irsp) &&
                             ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
-                                lpfc_drop_node(vport, ndlp);
-                                ndlp = NULL;
+                                if (lpfc_nlp_not_used(ndlp)) {
+                                        ndlp = NULL;
+                                        /* Indicate node has already been
+                                         * released, should not reference
+                                         * to it from within the routine
+                                         * lpfc_els_free_iocb.
+                                         */
+                                        cmdiocb->context1 = NULL;
+                                }
                         }
                 }
                 mp = (struct lpfc_dmabuf *) mbox->context1;
@@ -2178,7 +2381,21 @@ out:
                 spin_lock_irq(shost->host_lock);
                 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
                 spin_unlock_irq(shost->host_lock);
+
+                /* If the node is not being used by another discovery thread,
+                 * and we are sending a reject, we are done with it.
+                 * Release driver reference count here and free associated
+                 * resources.
+                 */
+                if (ls_rjt)
+                        if (lpfc_nlp_not_used(ndlp))
+                                /* Indicate node has already been released,
+                                 * should not reference to it from within
+                                 * the routine lpfc_els_free_iocb.
+                                 */
+                                cmdiocb->context1 = NULL;
         }
+
         lpfc_els_free_iocb(phba, cmdiocb);
         return;
 }
@@ -2349,14 +2566,6 @@ lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
         elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
         rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
 
-        /* If the node is in the UNUSED state, and we are sending
-         * a reject, we are done with it.  Release driver reference
-         * count here.  The outstanding els will release its reference on
-         * completion and the node can be freed then.
-         */
-        if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
-                lpfc_nlp_put(ndlp);
-
         if (rc == IOCB_ERROR) {
                 lpfc_els_free_iocb(phba, elsiocb);
                 return 1;
@@ -2642,7 +2851,10 @@ lpfc_els_disc_plogi(struct lpfc_vport *vport)
                         }
                 }
         }
-        if (sentplogi == 0) {
+        if (sentplogi) {
+                lpfc_set_disctmo(vport);
+        }
+        else {
                 spin_lock_irq(shost->host_lock);
                 vport->fc_flag &= ~FC_NLP_MORE;
                 spin_unlock_irq(shost->host_lock);
@@ -2830,10 +3042,10 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
                         "RCV RSCN defer:  did:x%x/ste:x%x flg:x%x",
                         ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
 
+                spin_lock_irq(shost->host_lock);
                 vport->fc_flag |= FC_RSCN_DEFERRED;
                 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
                     !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
-                        spin_lock_irq(shost->host_lock);
                         vport->fc_flag |= FC_RSCN_MODE;
                         spin_unlock_irq(shost->host_lock);
                         if (rscn_cnt) {
@@ -2862,7 +3074,6 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
                                          vport->fc_rscn_id_cnt, vport->fc_flag,
                                          vport->port_state);
                 } else {
-                        spin_lock_irq(shost->host_lock);
                         vport->fc_flag |= FC_RSCN_DISCOVERY;
                         spin_unlock_irq(shost->host_lock);
                         /* ReDiscovery RSCN */
@@ -2877,7 +3088,9 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
 
                 /* send RECOVERY event for ALL nodes that match RSCN payload */
                 lpfc_rscn_recovery_check(vport);
+                spin_lock_irq(shost->host_lock);
                 vport->fc_flag &= ~FC_RSCN_DEFERRED;
+                spin_unlock_irq(shost->host_lock);
                 return 0;
         }
 
@@ -2929,6 +3142,8 @@ lpfc_els_handle_rscn(struct lpfc_vport *vport)
 
         /* To process RSCN, first compare RSCN data with NameServer */
         vport->fc_ns_retry = 0;
+        vport->num_disc_nodes = 0;
+
         ndlp = lpfc_findnode_did(vport, NameServer_DID);
         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
                 /* Good ndlp, issue CT Request to NameServer */
@@ -3022,8 +3237,7 @@ lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
                         mbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
                         mbox->vport = vport;
-                        rc = lpfc_sli_issue_mbox
-                                (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
+                        rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
                         lpfc_set_loopback_flag(phba);
                         if (rc == MBX_NOT_FINISHED) {
                                 mempool_free(mbox, phba->mbox_mem_pool);
@@ -3140,7 +3354,10 @@ lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
         elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
                                      lpfc_max_els_tries, ndlp,
                                      ndlp->nlp_DID, ELS_CMD_ACC);
+
+        /* Decrement the ndlp reference count from previous mbox command */
         lpfc_nlp_put(ndlp);
+
         if (!elsiocb)
                 return;
 
@@ -3160,13 +3377,13 @@ lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
                 status |= 0x4;
 
         rps_rsp->rsvd1 = 0;
-        rps_rsp->portStatus = be16_to_cpu(status);
-        rps_rsp->linkFailureCnt = be32_to_cpu(mb->un.varRdLnk.linkFailureCnt);
-        rps_rsp->lossSyncCnt = be32_to_cpu(mb->un.varRdLnk.lossSyncCnt);
-        rps_rsp->lossSignalCnt = be32_to_cpu(mb->un.varRdLnk.lossSignalCnt);
-        rps_rsp->primSeqErrCnt = be32_to_cpu(mb->un.varRdLnk.primSeqErrCnt);
-        rps_rsp->invalidXmitWord = be32_to_cpu(mb->un.varRdLnk.invalidXmitWord);
-        rps_rsp->crcCnt = be32_to_cpu(mb->un.varRdLnk.crcCnt);
+        rps_rsp->portStatus = cpu_to_be16(status);
+        rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
+        rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
+        rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
+        rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
+        rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
+        rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
         /* Xmit ELS RPS ACC response tag <ulpIoTag> */
         lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
                          "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
@@ -3223,11 +3440,13 @@ lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
                         mbox->context2 = lpfc_nlp_get(ndlp);
                         mbox->vport = vport;
                         mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
-                        if (lpfc_sli_issue_mbox (phba, mbox,
-                            (MBX_NOWAIT | MBX_STOP_IOCB)) != MBX_NOT_FINISHED)
+                        if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
+                                != MBX_NOT_FINISHED)
                                 /* Mbox completion will send ELS Response */
                                 return 0;
-
+                        /* Decrement reference count used for the failed mbox
+                         * command.
+                         */
                         lpfc_nlp_put(ndlp);
                         mempool_free(mbox, phba->mbox_mem_pool);
                 }
@@ -3461,6 +3680,7 @@ lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
                                          * other NLP_FABRIC logins
                                          */
                                         lpfc_drop_node(vport, ndlp);
+
                                 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
                                         /* Fail outstanding I/O now since this
                                          * device is marked for PLOGI
@@ -3469,8 +3689,6 @@ lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
                                 }
                         }
 
-                        vport->port_state = LPFC_FLOGI;
-                        lpfc_set_disctmo(vport);
                         lpfc_initial_flogi(vport);
                         return 0;
                 }
@@ -3711,6 +3929,7 @@ static void
 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                       struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
 {
+        struct Scsi_Host  *shost;
         struct lpfc_nodelist *ndlp;
         struct ls_rjt stat;
         uint32_t *payload;
@@ -3750,11 +3969,19 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                         goto dropit;
 
                 lpfc_nlp_init(vport, ndlp, did);
+                lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
                 newnode = 1;
                 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) {
                         ndlp->nlp_type |= NLP_FABRIC;
                 }
-                lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
+        }
+        else {
+                if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
+                        /* This is simular to the new node path */
+                        lpfc_nlp_get(ndlp);
+                        lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+                        newnode = 1;
+                }
         }
 
         phba->fc_stat.elsRcvFrame++;
@@ -3783,6 +4010,12 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                         rjt_err = LSRJT_UNABLE_TPC;
                         break;
                 }
+
+                shost = lpfc_shost_from_vport(vport);
+                spin_lock_irq(shost->host_lock);
+                ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
+                spin_unlock_irq(shost->host_lock);
+
                 lpfc_disc_state_machine(vport, ndlp, elsiocb,
                                         NLP_EVT_RCV_PLOGI);
 
@@ -3795,7 +4028,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 phba->fc_stat.elsRcvFLOGI++;
                 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
                 if (newnode)
-                        lpfc_drop_node(vport, ndlp);
+                        lpfc_nlp_put(ndlp);
                 break;
         case ELS_CMD_LOGO:
                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
@@ -3825,7 +4058,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 phba->fc_stat.elsRcvRSCN++;
                 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
                 if (newnode)
-                        lpfc_drop_node(vport, ndlp);
+                        lpfc_nlp_put(ndlp);
                 break;
         case ELS_CMD_ADISC:
                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
@@ -3897,7 +4130,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 phba->fc_stat.elsRcvLIRR++;
                 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
                 if (newnode)
-                        lpfc_drop_node(vport, ndlp);
+                        lpfc_nlp_put(ndlp);
                 break;
         case ELS_CMD_RPS:
                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
@@ -3907,7 +4140,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 phba->fc_stat.elsRcvRPS++;
                 lpfc_els_rcv_rps(vport, elsiocb, ndlp);
                 if (newnode)
-                        lpfc_drop_node(vport, ndlp);
+                        lpfc_nlp_put(ndlp);
                 break;
         case ELS_CMD_RPL:
                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
@@ -3917,7 +4150,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 phba->fc_stat.elsRcvRPL++;
                 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
                 if (newnode)
-                        lpfc_drop_node(vport, ndlp);
+                        lpfc_nlp_put(ndlp);
                 break;
         case ELS_CMD_RNID:
                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
@@ -3927,7 +4160,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 phba->fc_stat.elsRcvRNID++;
                 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
                 if (newnode)
-                        lpfc_drop_node(vport, ndlp);
+                        lpfc_nlp_put(ndlp);
                 break;
         default:
                 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
@@ -3942,7 +4175,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                                  "0115 Unknown ELS command x%x "
                                  "received from NPORT x%x\n", cmd, did);
                 if (newnode)
-                        lpfc_drop_node(vport, ndlp);
+                        lpfc_nlp_put(ndlp);
                 break;
         }
 
@@ -3958,10 +4191,11 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         return;
 
 dropit:
-        lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
+        if (vport && !(vport->load_flag & FC_UNLOADING))
+                lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
                         "(%d):0111 Dropping received ELS cmd "
                         "Data: x%x x%x x%x\n",
-                        vport ? vport->vpi : 0xffff, icmd->ulpStatus,
+                        vport->vpi, icmd->ulpStatus,
                         icmd->un.ulpWord[4], icmd->ulpTimeout);
         phba->fc_stat.elsRcvDrop++;
 }
@@ -4114,8 +4348,9 @@ lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
         struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
         MAILBOX_t *mb = &pmb->mb;
 
+        spin_lock_irq(shost->host_lock);
         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
-        lpfc_nlp_put(ndlp);
+        spin_unlock_irq(shost->host_lock);
 
         if (mb->mbxStatus) {
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
@@ -4135,7 +4370,9 @@ lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
                 default:
                         /* Try to recover from this error */
                         lpfc_mbx_unreg_vpi(vport);
+                        spin_lock_irq(shost->host_lock);
                         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+                        spin_unlock_irq(shost->host_lock);
                         lpfc_initial_fdisc(vport);
                         break;
                 }
@@ -4146,14 +4383,21 @@ lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
                 else
                         lpfc_do_scr_ns_plogi(phba, vport);
         }
+
+        /* Now, we decrement the ndlp reference count held for this
+         * callback function
+         */
+        lpfc_nlp_put(ndlp);
+
         mempool_free(pmb, phba->mbox_mem_pool);
         return;
 }
 
-void
+static void
 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
                         struct lpfc_nodelist *ndlp)
 {
+        struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
         LPFC_MBOXQ_t *mbox;
 
         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
@@ -4162,25 +4406,31 @@ lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
                 mbox->vport = vport;
                 mbox->context2 = lpfc_nlp_get(ndlp);
                 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
-                if (lpfc_sli_issue_mbox(phba, mbox,
-                                        MBX_NOWAIT | MBX_STOP_IOCB)
+                if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
                     == MBX_NOT_FINISHED) {
+                        /* mailbox command not success, decrement ndlp
+                         * reference count for this command
+                         */
+                        lpfc_nlp_put(ndlp);
                         mempool_free(mbox, phba->mbox_mem_pool);
-                        vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
 
-                        lpfc_vport_set_state(vport, FC_VPORT_FAILED);
                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                                 "0253 Register VPI: Can't send mbox\n");
+                        goto mbox_err_exit;
                 }
         } else {
-                lpfc_vport_set_state(vport, FC_VPORT_FAILED);
-
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
                                  "0254 Register VPI: no memory\n");
-
-                vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
-                lpfc_nlp_put(ndlp);
+                goto mbox_err_exit;
         }
+        return;
+
+mbox_err_exit:
+        lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+        spin_lock_irq(shost->host_lock);
+        vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
+        spin_unlock_irq(shost->host_lock);
+        return;
 }
 
 static void
@@ -4251,7 +4501,9 @@ lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                                 lpfc_unreg_rpi(vport, np);
                         }
                         lpfc_mbx_unreg_vpi(vport);
+                        spin_lock_irq(shost->host_lock);
                         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+                        spin_unlock_irq(shost->host_lock);
                 }
 
                 if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
@@ -4259,14 +4511,15 @@ lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 else
                         lpfc_do_scr_ns_plogi(phba, vport);
 
-                lpfc_nlp_put(ndlp); /* Free Fabric ndlp for vports */
+                /* Unconditionaly kick off releasing fabric node for vports */
+                lpfc_nlp_put(ndlp);
         }
 
 out:
         lpfc_els_free_iocb(phba, cmdiocb);
 }
 
-int
+static int
 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                      uint8_t retry)
 {
@@ -4539,7 +4792,7 @@ lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
         }
 }
 
-int
+static int
 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
 {
         unsigned long iflags;
@@ -4583,7 +4836,7 @@ lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
 }
 
 
-void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
+static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
 {
         LIST_HEAD(completions);
         struct lpfc_hba  *phba = vport->phba;
@@ -4663,6 +4916,7 @@ void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
 }
 
 
+#if 0
 void lpfc_fabric_abort_flogi(struct lpfc_hba *phba)
 {
         LIST_HEAD(completions);
@@ -4693,5 +4947,6 @@ void lpfc_fabric_abort_flogi(struct lpfc_hba *phba)
                 (piocb->iocb_cmpl) (phba, piocb, piocb);
         }
 }
+#endif  /*  0  */
 
 
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index c81c2b3228d6..dc042bd97baa 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -57,6 +57,7 @@ static uint8_t lpfcAlpaArray[] = {
 };
 
 static void lpfc_disc_timeout_handler(struct lpfc_vport *);
+static void lpfc_disc_flush_list(struct lpfc_vport *vport);
 
 void
 lpfc_terminate_rport_io(struct fc_rport *rport)
@@ -107,20 +108,14 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
         struct lpfc_nodelist * ndlp;
         struct lpfc_vport *vport;
         struct lpfc_hba   *phba;
-        struct completion devloss_compl;
         struct lpfc_work_evt *evtp;
+        int  put_node;
+        int  put_rport;
 
         rdata = rport->dd_data;
         ndlp = rdata->pnode;
-
-        if (!ndlp) {
-                if (rport->scsi_target_id != -1) {
-                        printk(KERN_ERR "Cannot find remote node"
-                                " for rport in dev_loss_tmo_callbk x%x\n",
-                                rport->port_id);
-                }
+        if (!ndlp)
                 return;
-        }
 
         vport = ndlp->vport;
         phba  = vport->phba;
@@ -129,15 +124,35 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
                 "rport devlosscb: sid:x%x did:x%x flg:x%x",
                 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
 
-        init_completion(&devloss_compl);
+        /* Don't defer this if we are in the process of deleting the vport
+         * or unloading the driver. The unload will cleanup the node
+         * appropriately we just need to cleanup the ndlp rport info here.
+         */
+        if (vport->load_flag & FC_UNLOADING) {
+                put_node = rdata->pnode != NULL;
+                put_rport = ndlp->rport != NULL;
+                rdata->pnode = NULL;
+                ndlp->rport = NULL;
+                if (put_node)
+                        lpfc_nlp_put(ndlp);
+                if (put_rport)
+                        put_device(&rport->dev);
+                return;
+        }
+
+        if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
+                return;
+
         evtp = &ndlp->dev_loss_evt;
 
         if (!list_empty(&evtp->evt_listp))
                 return;
 
         spin_lock_irq(&phba->hbalock);
-        evtp->evt_arg1  = ndlp;
-        evtp->evt_arg2  = &devloss_compl;
+        /* We need to hold the node by incrementing the reference
+         * count until this queued work is done
+         */
+        evtp->evt_arg1  = lpfc_nlp_get(ndlp);
         evtp->evt       = LPFC_EVT_DEV_LOSS;
         list_add_tail(&evtp->evt_listp, &phba->work_list);
         if (phba->work_wait)
@@ -145,8 +160,6 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
 
         spin_unlock_irq(&phba->hbalock);
 
-        wait_for_completion(&devloss_compl);
-
         return;
 }
 
@@ -154,7 +167,7 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
  * This function is called from the worker thread when dev_loss_tmo
  * expire.
  */
-void
+static void
 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 {
         struct lpfc_rport_data *rdata;
@@ -162,6 +175,8 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
         struct lpfc_vport *vport;
         struct lpfc_hba   *phba;
         uint8_t *name;
+        int  put_node;
+        int  put_rport;
         int warn_on = 0;
 
         rport = ndlp->rport;
@@ -178,14 +193,32 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
                 "rport devlosstmo:did:x%x type:x%x id:x%x",
                 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
 
-        if (!(vport->load_flag & FC_UNLOADING) &&
-            ndlp->nlp_state == NLP_STE_MAPPED_NODE)
+        /* Don't defer this if we are in the process of deleting the vport
+         * or unloading the driver. The unload will cleanup the node
+         * appropriately we just need to cleanup the ndlp rport info here.
+         */
+        if (vport->load_flag & FC_UNLOADING) {
+                if (ndlp->nlp_sid != NLP_NO_SID) {
+                        /* flush the target */
+                        lpfc_sli_abort_iocb(vport,
+                                        &phba->sli.ring[phba->sli.fcp_ring],
+                                        ndlp->nlp_sid, 0, LPFC_CTX_TGT);
+                }
+                put_node = rdata->pnode != NULL;
+                put_rport = ndlp->rport != NULL;
+                rdata->pnode = NULL;
+                ndlp->rport = NULL;
+                if (put_node)
+                        lpfc_nlp_put(ndlp);
+                if (put_rport)
+                        put_device(&rport->dev);
                 return;
+        }
 
-        if (ndlp->nlp_type & NLP_FABRIC) {
-                int  put_node;
-                int  put_rport;
+        if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
+                return;
 
+        if (ndlp->nlp_type & NLP_FABRIC) {
                 /* We will clean up these Nodes in linkup */
                 put_node = rdata->pnode != NULL;
                 put_rport = ndlp->rport != NULL;
@@ -227,23 +260,20 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
                                  ndlp->nlp_state, ndlp->nlp_rpi);
         }
 
+        put_node = rdata->pnode != NULL;
+        put_rport = ndlp->rport != NULL;
+        rdata->pnode = NULL;
+        ndlp->rport = NULL;
+        if (put_node)
+                lpfc_nlp_put(ndlp);
+        if (put_rport)
+                put_device(&rport->dev);
+
         if (!(vport->load_flag & FC_UNLOADING) &&
             !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
             !(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
-            (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
+            (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) {
                 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
-        else {
-                int  put_node;
-                int  put_rport;
-
-                put_node = rdata->pnode != NULL;
-                put_rport = ndlp->rport != NULL;
-                rdata->pnode = NULL;
-                ndlp->rport = NULL;
-                if (put_node)
-                        lpfc_nlp_put(ndlp);
-                if (put_rport)
-                        put_device(&rport->dev);
         }
 }
 
@@ -260,7 +290,6 @@ lpfc_work_list_done(struct lpfc_hba *phba)
 {
         struct lpfc_work_evt  *evtp = NULL;
         struct lpfc_nodelist  *ndlp;
-        struct lpfc_vport     *vport;
         int free_evt;
 
         spin_lock_irq(&phba->hbalock);
@@ -270,35 +299,22 @@ lpfc_work_list_done(struct lpfc_hba *phba)
                 spin_unlock_irq(&phba->hbalock);
                 free_evt = 1;
                 switch (evtp->evt) {
-                case LPFC_EVT_DEV_LOSS_DELAY:
-                        free_evt = 0; /* evt is part of ndlp */
-                        ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
-                        vport = ndlp->vport;
-                        if (!vport)
-                                break;
-
-                        lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
-                                "rport devlossdly:did:x%x flg:x%x",
-                                ndlp->nlp_DID, ndlp->nlp_flag, 0);
-
-                        if (!(vport->load_flag & FC_UNLOADING) &&
-                            !(ndlp->nlp_flag & NLP_DELAY_TMO) &&
-                            !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
-                                lpfc_disc_state_machine(vport, ndlp, NULL,
-                                        NLP_EVT_DEVICE_RM);
-                        }
-                        break;
                 case LPFC_EVT_ELS_RETRY:
                         ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
                         lpfc_els_retry_delay_handler(ndlp);
                         free_evt = 0; /* evt is part of ndlp */
+                        /* decrement the node reference count held
+                         * for this queued work
+                         */
+                        lpfc_nlp_put(ndlp);
                         break;
                 case LPFC_EVT_DEV_LOSS:
                         ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
-                        lpfc_nlp_get(ndlp);
                         lpfc_dev_loss_tmo_handler(ndlp);
                         free_evt = 0;
-                        complete((struct completion *)(evtp->evt_arg2));
+                        /* decrement the node reference count held for
+                         * this queued work
+                         */
                         lpfc_nlp_put(ndlp);
                         break;
                 case LPFC_EVT_ONLINE:
@@ -373,7 +389,7 @@ lpfc_work_done(struct lpfc_hba *phba)
                 lpfc_handle_latt(phba);
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS; i++) {
+                for(i = 0; i <= phba->max_vpi; i++) {
                         /*
                          * We could have no vports in array if unloading, so if
                          * this happens then just use the pport
@@ -405,14 +421,14 @@ lpfc_work_done(struct lpfc_hba *phba)
                         vport->work_port_events &= ~work_port_events;
                         spin_unlock_irq(&vport->work_port_lock);
                 }
-        lpfc_destroy_vport_work_array(vports);
+        lpfc_destroy_vport_work_array(phba, vports);
 
         pring = &phba->sli.ring[LPFC_ELS_RING];
         status = (ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
         status >>= (4*LPFC_ELS_RING);
         if ((status & HA_RXMASK)
                 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
-                if (pring->flag & LPFC_STOP_IOCB_MASK) {
+                if (pring->flag & LPFC_STOP_IOCB_EVENT) {
                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
                 } else {
                         lpfc_sli_handle_slow_ring_event(phba, pring,
@@ -544,6 +560,7 @@ lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
 void
 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
 {
+        struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
         struct lpfc_hba  *phba = vport->phba;
         struct lpfc_nodelist *ndlp, *next_ndlp;
         int  rc;
@@ -552,7 +569,9 @@ lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
                         continue;
 
-                if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN)
+                if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
+                        ((vport->port_type == LPFC_NPIV_PORT) &&
+                        (ndlp->nlp_DID == NameServer_DID)))
                         lpfc_unreg_rpi(vport, ndlp);
 
                 /* Leave Fabric nodes alone on link down */
@@ -565,14 +584,30 @@ lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
         }
         if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
                 lpfc_mbx_unreg_vpi(vport);
+                spin_lock_irq(shost->host_lock);
                 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+                spin_unlock_irq(shost->host_lock);
         }
 }
 
+void
+lpfc_port_link_failure(struct lpfc_vport *vport)
+{
+        /* Cleanup any outstanding RSCN activity */
+        lpfc_els_flush_rscn(vport);
+
+        /* Cleanup any outstanding ELS commands */
+        lpfc_els_flush_cmd(vport);
+
+        lpfc_cleanup_rpis(vport, 0);
+
+        /* Turn off discovery timer if its running */
+        lpfc_can_disctmo(vport);
+}
+
 static void
 lpfc_linkdown_port(struct lpfc_vport *vport)
 {
-        struct lpfc_nodelist *ndlp, *next_ndlp;
         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 
         fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
@@ -581,21 +616,8 @@ lpfc_linkdown_port(struct lpfc_vport *vport)
                 "Link Down:       state:x%x rtry:x%x flg:x%x",
                 vport->port_state, vport->fc_ns_retry, vport->fc_flag);
 
-        /* Cleanup any outstanding RSCN activity */
-        lpfc_els_flush_rscn(vport);
-
-        /* Cleanup any outstanding ELS commands */
-        lpfc_els_flush_cmd(vport);
+        lpfc_port_link_failure(vport);
 
-        lpfc_cleanup_rpis(vport, 0);
-
-        /* free any ndlp's on unused list */
-        list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
-                if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
-                        lpfc_drop_node(vport, ndlp);
-
-        /* Turn off discovery timer if its running */
-        lpfc_can_disctmo(vport);
 }
 
 int
@@ -618,18 +640,18 @@ lpfc_linkdown(struct lpfc_hba *phba)
         spin_unlock_irq(&phba->hbalock);
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
                         /* Issue a LINK DOWN event to all nodes */
                         lpfc_linkdown_port(vports[i]);
                 }
-        lpfc_destroy_vport_work_array(vports);
+        lpfc_destroy_vport_work_array(phba, vports);
         /* Clean up any firmware default rpi's */
         mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (mb) {
                 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
                 mb->vport = vport;
                 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
-                if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
+                if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
                     == MBX_NOT_FINISHED) {
                         mempool_free(mb, phba->mbox_mem_pool);
                 }
@@ -643,8 +665,7 @@ lpfc_linkdown(struct lpfc_hba *phba)
                         lpfc_config_link(phba, mb);
                         mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
                         mb->vport = vport;
-                        if (lpfc_sli_issue_mbox(phba, mb,
-                                                (MBX_NOWAIT | MBX_STOP_IOCB))
+                        if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
                             == MBX_NOT_FINISHED) {
                                 mempool_free(mb, phba->mbox_mem_pool);
                         }
@@ -686,7 +707,6 @@ static void
 lpfc_linkup_port(struct lpfc_vport *vport)
 {
         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
-        struct lpfc_nodelist *ndlp, *next_ndlp;
         struct lpfc_hba  *phba = vport->phba;
 
         if ((vport->load_flag & FC_UNLOADING) != 0)
@@ -713,11 +733,6 @@ lpfc_linkup_port(struct lpfc_vport *vport)
         if (vport->fc_flag & FC_LBIT)
                 lpfc_linkup_cleanup_nodes(vport);
 
-                                /* free any ndlp's in unused state */
-        list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
-                                 nlp_listp)
-                if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
-                        lpfc_drop_node(vport, ndlp);
 }
 
 static int
@@ -734,9 +749,9 @@ lpfc_linkup(struct lpfc_hba *phba)
 
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++)
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
                         lpfc_linkup_port(vports[i]);
-        lpfc_destroy_vport_work_array(vports);
+        lpfc_destroy_vport_work_array(phba, vports);
         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
                 lpfc_issue_clear_la(phba, phba->pport);
 
@@ -749,7 +764,7 @@ lpfc_linkup(struct lpfc_hba *phba)
  * as the completion routine when the command is
  * handed off to the SLI layer.
  */
-void
+static void
 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
         struct lpfc_vport *vport = pmb->vport;
@@ -852,8 +867,6 @@ lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
          * LPFC_FLOGI while waiting for FLOGI cmpl
          */
         if (vport->port_state != LPFC_FLOGI) {
-                vport->port_state = LPFC_FLOGI;
-                lpfc_set_disctmo(vport);
                 lpfc_initial_flogi(vport);
         }
         return;
@@ -1022,8 +1035,7 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
                 lpfc_read_sparam(phba, sparam_mbox, 0);
                 sparam_mbox->vport = vport;
                 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
-                rc = lpfc_sli_issue_mbox(phba, sparam_mbox,
-                                    (MBX_NOWAIT | MBX_STOP_IOCB));
+                rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
                 if (rc == MBX_NOT_FINISHED) {
                         mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
@@ -1040,8 +1052,7 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
                 lpfc_config_link(phba, cfglink_mbox);
                 cfglink_mbox->vport = vport;
                 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
-                rc = lpfc_sli_issue_mbox(phba, cfglink_mbox,
-                                    (MBX_NOWAIT | MBX_STOP_IOCB));
+                rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
                 if (rc != MBX_NOT_FINISHED)
                         return;
                 mempool_free(cfglink_mbox, phba->mbox_mem_pool);
@@ -1174,6 +1185,9 @@ lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
         lpfc_mbuf_free(phba, mp->virt, mp->phys);
         kfree(mp);
         mempool_free(pmb, phba->mbox_mem_pool);
+        /* decrement the node reference count held for this callback
+         * function.
+         */
         lpfc_nlp_put(ndlp);
 
         return;
@@ -1219,7 +1233,7 @@ lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
         lpfc_unreg_vpi(phba, vport->vpi, mbox);
         mbox->vport = vport;
         mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
-        rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
+        rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
         if (rc == MBX_NOT_FINISHED) {
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
                                  "1800 Could not issue unreg_vpi\n");
@@ -1319,7 +1333,7 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
                 vports = lpfc_create_vport_work_array(phba);
                 if (vports != NULL)
                         for(i = 0;
-                            i < LPFC_MAX_VPORTS && vports[i] != NULL;
+                            i <= phba->max_vpi && vports[i] != NULL;
                             i++) {
                                 if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
                                         continue;
@@ -1335,7 +1349,7 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
                                                         "Fabric support\n");
                                 }
                         }
-                lpfc_destroy_vport_work_array(vports);
+                lpfc_destroy_vport_work_array(phba, vports);
                 lpfc_do_scr_ns_plogi(phba, vport);
         }
 
@@ -1361,11 +1375,16 @@ lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 
         if (mb->mbxStatus) {
 out:
+                /* decrement the node reference count held for this
+                 * callback function.
+                 */
                 lpfc_nlp_put(ndlp);
                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
                 kfree(mp);
                 mempool_free(pmb, phba->mbox_mem_pool);
-                lpfc_drop_node(vport, ndlp);
+
+                /* If no other thread is using the ndlp, free it */
+                lpfc_nlp_not_used(ndlp);
 
                 if (phba->fc_topology == TOPOLOGY_LOOP) {
                         /*
@@ -1410,6 +1429,9 @@ out:
                 goto out;
         }
 
+        /* decrement the node reference count held for this
+         * callback function.
+         */
         lpfc_nlp_put(ndlp);
         lpfc_mbuf_free(phba, mp->virt, mp->phys);
         kfree(mp);
@@ -1656,8 +1678,18 @@ lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 void
 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
+        /*
+         * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
+         * be used if we wish to issue the "last" lpfc_nlp_put() to remove
+         * the ndlp from the vport. The ndlp marked as UNUSED on the list
+         * until ALL other outstanding threads have completed. We check
+         * that the ndlp not already in the UNUSED state before we proceed.
+         */
+        if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
+                return;
         lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
         lpfc_nlp_put(ndlp);
+        return;
 }
 
 /*
@@ -1868,8 +1900,7 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
                         lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
                         mbox->vport = vport;
                         mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
-                        rc = lpfc_sli_issue_mbox(phba, mbox,
-                                                 (MBX_NOWAIT | MBX_STOP_IOCB));
+                        rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
                         if (rc == MBX_NOT_FINISHED)
                                 mempool_free(mbox, phba->mbox_mem_pool);
                 }
@@ -1892,8 +1923,8 @@ lpfc_unreg_all_rpis(struct lpfc_vport *vport)
                 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
                 mbox->vport = vport;
                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
-                rc = lpfc_sli_issue_mbox(phba, mbox,
-                                         (MBX_NOWAIT | MBX_STOP_IOCB));
+                mbox->context1 = NULL;
+                rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
                 if (rc == MBX_NOT_FINISHED) {
                         mempool_free(mbox, phba->mbox_mem_pool);
                 }
@@ -1912,8 +1943,8 @@ lpfc_unreg_default_rpis(struct lpfc_vport *vport)
                 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
                 mbox->vport = vport;
                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
-                rc = lpfc_sli_issue_mbox(phba, mbox,
-                                         (MBX_NOWAIT | MBX_STOP_IOCB));
+                mbox->context1 = NULL;
+                rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
                 if (rc == MBX_NOT_FINISHED) {
                         lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
                                          "1815 Could not issue "
@@ -1981,11 +2012,6 @@ lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
         if (!list_empty(&ndlp->dev_loss_evt.evt_listp))
                 list_del_init(&ndlp->dev_loss_evt.evt_listp);
 
-        if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) {
-                list_del_init(&ndlp->dev_loss_evt.evt_listp);
-                complete((struct completion *)(ndlp->dev_loss_evt.evt_arg2));
-        }
-
         lpfc_unreg_rpi(vport, ndlp);
 
         return 0;
@@ -1999,12 +2025,39 @@ lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 static void
 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
+        struct lpfc_hba  *phba = vport->phba;
         struct lpfc_rport_data *rdata;
+        LPFC_MBOXQ_t *mbox;
+        int rc;
 
         if (ndlp->nlp_flag & NLP_DELAY_TMO) {
                 lpfc_cancel_retry_delay_tmo(vport, ndlp);
         }
 
+        if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
+                /* For this case we need to cleanup the default rpi
+                 * allocated by the firmware.
+                 */
+                if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
+                        != NULL) {
+                        rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
+                            (uint8_t *) &vport->fc_sparam, mbox, 0);
+                        if (rc) {
+                                mempool_free(mbox, phba->mbox_mem_pool);
+                        }
+                        else {
+                                mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
+                                mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
+                                mbox->vport = vport;
+                                mbox->context2 = NULL;
+                                rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+                                if (rc == MBX_NOT_FINISHED) {
+                                        mempool_free(mbox, phba->mbox_mem_pool);
+                                }
+                        }
+                }
+        }
+
         lpfc_cleanup_node(vport, ndlp);
 
         /*
@@ -2132,6 +2185,12 @@ lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
         }
         if (vport->fc_flag & FC_RSCN_MODE) {
                 if (lpfc_rscn_payload_check(vport, did)) {
+                        /* If we've already recieved a PLOGI from this NPort
+                         * we don't need to try to discover it again.
+                         */
+                        if (ndlp->nlp_flag & NLP_RCV_PLOGI)
+                                return NULL;
+
                         spin_lock_irq(shost->host_lock);
                         ndlp->nlp_flag |= NLP_NPR_2B_DISC;
                         spin_unlock_irq(shost->host_lock);
@@ -2144,8 +2203,13 @@ lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
                 } else
                         ndlp = NULL;
         } else {
+                /* If we've already recieved a PLOGI from this NPort,
+                 * or we are already in the process of discovery on it,
+                 * we don't need to try to discover it again.
+                 */
                 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
-                    ndlp->nlp_state == NLP_STE_PLOGI_ISSUE)
+                    ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
+                    ndlp->nlp_flag & NLP_RCV_PLOGI)
                         return NULL;
                 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
                 spin_lock_irq(shost->host_lock);
@@ -2220,8 +2284,7 @@ lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
                 lpfc_clear_la(phba, mbox);
                 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
                 mbox->vport = vport;
-                rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT |
-                                                      MBX_STOP_IOCB));
+                rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
                 if (rc == MBX_NOT_FINISHED) {
                         mempool_free(mbox, phba->mbox_mem_pool);
                         lpfc_disc_flush_list(vport);
@@ -2244,8 +2307,7 @@ lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
                 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox);
                 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
                 regvpimbox->vport = vport;
-                if (lpfc_sli_issue_mbox(phba, regvpimbox,
-                                        (MBX_NOWAIT | MBX_STOP_IOCB))
+                if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
                                         == MBX_NOT_FINISHED) {
                         mempool_free(regvpimbox, phba->mbox_mem_pool);
                 }
@@ -2414,7 +2476,7 @@ lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
         }
 }
 
-void
+static void
 lpfc_disc_flush_list(struct lpfc_vport *vport)
 {
         struct lpfc_nodelist *ndlp, *next_ndlp;
@@ -2426,7 +2488,6 @@ lpfc_disc_flush_list(struct lpfc_vport *vport)
                         if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
                             ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
                                 lpfc_free_tx(phba, ndlp);
-                                lpfc_nlp_put(ndlp);
                         }
                 }
         }
@@ -2516,6 +2577,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport)
                         if (ndlp->nlp_type & NLP_FABRIC) {
                                 /* Clean up the ndlp on Fabric connections */
                                 lpfc_drop_node(vport, ndlp);
+
                         } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
                                 /* Fail outstanding IO now since device
                                  * is marked for PLOGI.
@@ -2524,9 +2586,8 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport)
                         }
                 }
                 if (vport->port_state != LPFC_FLOGI) {
-                        vport->port_state = LPFC_FLOGI;
-                        lpfc_set_disctmo(vport);
                         lpfc_initial_flogi(vport);
+                        return;
                 }
                 break;
 
@@ -2536,7 +2597,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport)
                 /* Initial FLOGI timeout */
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                                  "0222 Initial %s timeout\n",
-                                 vport->vpi ? "FLOGI" : "FDISC");
+                                 vport->vpi ? "FDISC" : "FLOGI");
 
                 /* Assume no Fabric and go on with discovery.
                  * Check for outstanding ELS FLOGI to abort.
@@ -2558,10 +2619,10 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport)
                 /* Next look for NameServer ndlp */
                 ndlp = lpfc_findnode_did(vport, NameServer_DID);
                 if (ndlp)
-                        lpfc_nlp_put(ndlp);
-                /* Start discovery */
-                lpfc_disc_start(vport);
-                break;
+                        lpfc_els_abort(phba, ndlp);
+
+                /* ReStart discovery */
+                goto restart_disc;
 
         case LPFC_NS_QRY:
         /* Check for wait for NameServer Rsp timeout */
@@ -2580,6 +2641,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport)
                 }
                 vport->fc_ns_retry = 0;
 
+restart_disc:
                 /*
                  * Discovery is over.
                  * set port_state to PORT_READY if SLI2.
@@ -2608,8 +2670,7 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport)
                 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
                 initlinkmbox->vport = vport;
                 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
-                rc = lpfc_sli_issue_mbox(phba, initlinkmbox,
-                                         (MBX_NOWAIT | MBX_STOP_IOCB));
+                rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
                 lpfc_set_loopback_flag(phba);
                 if (rc == MBX_NOT_FINISHED)
                         mempool_free(initlinkmbox, phba->mbox_mem_pool);
@@ -2664,12 +2725,14 @@ lpfc_disc_timeout_handler(struct lpfc_vport *vport)
                 clrlaerr = 1;
                 break;
 
+        case LPFC_LINK_UP:
+                lpfc_issue_clear_la(phba, vport);
+                /* Drop thru */
         case LPFC_LINK_UNKNOWN:
         case LPFC_WARM_START:
         case LPFC_INIT_START:
         case LPFC_INIT_MBX_CMDS:
         case LPFC_LINK_DOWN:
-        case LPFC_LINK_UP:
         case LPFC_HBA_ERROR:
                 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
                                  "0230 Unexpected timeout, hba link "
@@ -2723,7 +2786,9 @@ lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
         else
                 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
 
-                                /* Mailbox took a reference to the node */
+        /* decrement the node reference count held for this callback
+         * function.
+         */
         lpfc_nlp_put(ndlp);
         lpfc_mbuf_free(phba, mp->virt, mp->phys);
         kfree(mp);
@@ -2747,19 +2812,19 @@ lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
                       sizeof(ndlp->nlp_portname)) == 0;
 }
 
-struct lpfc_nodelist *
+static struct lpfc_nodelist *
 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
 {
         struct lpfc_nodelist *ndlp;
 
         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
-                if (ndlp->nlp_state != NLP_STE_UNUSED_NODE &&
-                    filter(ndlp, param))
+                if (filter(ndlp, param))
                         return ndlp;
         }
         return NULL;
 }
 
+#if 0
 /*
  * Search node lists for a remote port matching filter criteria
  * Caller needs to hold host_lock before calling this routine.
@@ -2775,6 +2840,7 @@ lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
         spin_unlock_irq(shost->host_lock);
         return ndlp;
 }
+#endif  /*  0  */
 
 /*
  * This routine looks up the ndlp lists for the given RPI. If rpi found it
@@ -2786,6 +2852,7 @@ __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
         return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
 }
 
+#if 0
 struct lpfc_nodelist *
 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
 {
@@ -2797,6 +2864,7 @@ lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
         spin_unlock_irq(shost->host_lock);
         return ndlp;
 }
+#endif  /*  0  */
 
 /*
  * This routine looks up the ndlp lists for the given WWPN. If WWPN found it
@@ -2837,6 +2905,9 @@ lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         return;
 }
 
+/* This routine releases all resources associated with a specifc NPort's ndlp
+ * and mempool_free's the nodelist.
+ */
 static void
 lpfc_nlp_release(struct kref *kref)
 {
@@ -2851,16 +2922,57 @@ lpfc_nlp_release(struct kref *kref)
         mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
 }
 
+/* This routine bumps the reference count for a ndlp structure to ensure
+ * that one discovery thread won't free a ndlp while another discovery thread
+ * is using it.
+ */
 struct lpfc_nodelist *
 lpfc_nlp_get(struct lpfc_nodelist *ndlp)
 {
-        if (ndlp)
+        if (ndlp) {
+                lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
+                        "node get:        did:x%x flg:x%x refcnt:x%x",
+                        ndlp->nlp_DID, ndlp->nlp_flag,
+                        atomic_read(&ndlp->kref.refcount));
                 kref_get(&ndlp->kref);
+        }
         return ndlp;
 }
 
+
+/* This routine decrements the reference count for a ndlp structure. If the
+ * count goes to 0, this indicates the the associated nodelist should be freed.
+ */
 int
 lpfc_nlp_put(struct lpfc_nodelist *ndlp)
 {
+        if (ndlp) {
+                lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
+                "node put:        did:x%x flg:x%x refcnt:x%x",
+                        ndlp->nlp_DID, ndlp->nlp_flag,
+                        atomic_read(&ndlp->kref.refcount));
+        }
         return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0;
 }
+
+/* This routine free's the specified nodelist if it is not in use
+ * by any other discovery thread. This routine returns 1 if the ndlp
+ * is not being used by anyone and has been freed. A return value of
+ * 0 indicates it is being used by another discovery thread and the
+ * refcount is left unchanged.
+ */
+int
+lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
+{
+        lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
+                "node not used:   did:x%x flg:x%x refcnt:x%x",
+                ndlp->nlp_DID, ndlp->nlp_flag,
+                atomic_read(&ndlp->kref.refcount));
+
+        if (atomic_read(&ndlp->kref.refcount) == 1) {
+                lpfc_nlp_put(ndlp);
+                return 1;
+        }
+        return 0;
+}
+
diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index 451accd5564b..041f83e7634a 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -139,6 +139,9 @@ struct lpfc_sli_ct_request {
                         uint8_t len;
                         uint8_t symbname[255];
                 } rsnn;
+                struct da_id { /* For DA_ID requests */
+                        uint32_t port_id;
+                } da_id;
                 struct rspn {   /* For RSPN_ID requests */
                         uint32_t PortId;
                         uint8_t len;
@@ -150,11 +153,7 @@ struct lpfc_sli_ct_request {
                 struct gff_acc {
                         uint8_t fbits[128];
                 } gff_acc;
-#ifdef __BIG_ENDIAN_BITFIELD
 #define FCP_TYPE_FEATURE_OFFSET 7
-#else   /*  __LITTLE_ENDIAN_BITFIELD */
-#define FCP_TYPE_FEATURE_OFFSET 4
-#endif
                 struct rff {
                         uint32_t PortId;
                         uint8_t reserved[2];
@@ -177,6 +176,8 @@ struct lpfc_sli_ct_request {
                            sizeof(struct rnn))
 #define  RSNN_REQUEST_SZ  (offsetof(struct lpfc_sli_ct_request, un) + \
                            sizeof(struct rsnn))
+#define DA_ID_REQUEST_SZ (offsetof(struct lpfc_sli_ct_request, un) + \
+                          sizeof(struct da_id))
 #define  RSPN_REQUEST_SZ  (offsetof(struct lpfc_sli_ct_request, un) + \
                            sizeof(struct rspn))
 
@@ -1228,7 +1229,8 @@ typedef struct {		/* FireFly BIU registers */
 #define HS_FFER3       0x20000000       /* Bit 29 */
 #define HS_FFER2       0x40000000       /* Bit 30 */
 #define HS_FFER1       0x80000000       /* Bit 31 */
-#define HS_FFERM       0xFF000000       /* Mask for error bits 31:24 */
+#define HS_CRIT_TEMP   0x00000100       /* Bit 8  */
+#define HS_FFERM       0xFF000100       /* Mask for error bits 31:24 and 8 */
 
 /* Host Control Register */
 
@@ -1277,12 +1279,14 @@ typedef struct {		/* FireFly BIU registers */
 #define MBX_DEL_LD_ENTRY    0x1D
 #define MBX_RUN_PROGRAM     0x1E
 #define MBX_SET_MASK        0x20
-#define MBX_SET_SLIM        0x21
+#define MBX_SET_VARIABLE    0x21
 #define MBX_UNREG_D_ID      0x23
 #define MBX_KILL_BOARD      0x24
 #define MBX_CONFIG_FARP     0x25
 #define MBX_BEACON          0x2A
 #define MBX_HEARTBEAT       0x31
+#define MBX_WRITE_VPARMS    0x32
+#define MBX_ASYNCEVT_ENABLE 0x33
 
 #define MBX_CONFIG_HBQ      0x7C
 #define MBX_LOAD_AREA       0x81
@@ -1297,7 +1301,7 @@ typedef struct {		/* FireFly BIU registers */
 #define MBX_REG_VNPID       0x96
 #define MBX_UNREG_VNPID     0x97
 
-#define MBX_FLASH_WR_ULA    0x98
+#define MBX_WRITE_WWN       0x98
 #define MBX_SET_DEBUG       0x99
 #define MBX_LOAD_EXP_ROM    0x9C
 
@@ -1344,6 +1348,7 @@ typedef struct {		/* FireFly BIU registers */
 
 /*  SLI_2 IOCB Command Set */
 
+#define CMD_ASYNC_STATUS        0x7C
 #define CMD_RCV_SEQUENCE64_CX   0x81
 #define CMD_XMIT_SEQUENCE64_CR  0x82
 #define CMD_XMIT_SEQUENCE64_CX  0x83
@@ -1368,6 +1373,7 @@ typedef struct {		/* FireFly BIU registers */
 #define CMD_FCP_TRECEIVE64_CX   0xA1
 #define CMD_FCP_TRSP64_CX       0xA3
 
+#define CMD_QUE_XRI64_CX        0xB3
 #define CMD_IOCB_RCV_SEQ64_CX   0xB5
 #define CMD_IOCB_RCV_ELS64_CX   0xB7
 #define CMD_IOCB_RCV_CONT64_CX  0xBB
@@ -1406,6 +1412,8 @@ typedef struct {		/* FireFly BIU registers */
 #define MBX_BUSY                   0xffffff /* Attempted cmd to busy Mailbox */
 #define MBX_TIMEOUT                0xfffffe /* time-out expired waiting for */
 
+#define TEMPERATURE_OFFSET 0xB0 /* Slim offset for critical temperature event */
+
 /*
  *    Begin Structure Definitions for Mailbox Commands
  */
@@ -2606,6 +2614,18 @@ typedef struct {
         uint32_t IPAddress;
 } CONFIG_FARP_VAR;
 
+/* Structure for MB Command MBX_ASYNCEVT_ENABLE (0x33) */
+
+typedef struct {
+#ifdef __BIG_ENDIAN_BITFIELD
+        uint32_t rsvd:30;
+        uint32_t ring:2;        /* Ring for ASYNC_EVENT iocb Bits 0-1*/
+#else /*  __LITTLE_ENDIAN */
+        uint32_t ring:2;        /* Ring for ASYNC_EVENT iocb Bits 0-1*/
+        uint32_t rsvd:30;
+#endif
+} ASYNCEVT_ENABLE_VAR;
+
 /* Union of all Mailbox Command types */
 #define MAILBOX_CMD_WSIZE       32
 #define MAILBOX_CMD_SIZE        (MAILBOX_CMD_WSIZE * sizeof(uint32_t))
@@ -2645,6 +2665,7 @@ typedef union {
         CONFIG_PORT_VAR varCfgPort;     /* cmd = 0x88 (CONFIG_PORT)  */
         REG_VPI_VAR varRegVpi;          /* cmd = 0x96 (REG_VPI) */
         UNREG_VPI_VAR varUnregVpi;      /* cmd = 0x97 (UNREG_VPI) */
+        ASYNCEVT_ENABLE_VAR varCfgAsyncEvent; /*cmd = x33 (CONFIG_ASYNC) */
 } MAILVARIANTS;
 
 /*
@@ -2973,6 +2994,34 @@ typedef struct {
 #endif
 } RCV_ELS_REQ64;
 
+/* IOCB Command template for RCV_SEQ64 */
+struct rcv_seq64 {
+        struct ulp_bde64 elsReq;
+        uint32_t hbq_1;
+        uint32_t parmRo;
+#ifdef __BIG_ENDIAN_BITFIELD
+        uint32_t rctl:8;
+        uint32_t type:8;
+        uint32_t dfctl:8;
+        uint32_t ls:1;
+        uint32_t fs:1;
+        uint32_t rsvd2:3;
+        uint32_t si:1;
+        uint32_t bc:1;
+        uint32_t rsvd3:1;
+#else   /*  __LITTLE_ENDIAN_BITFIELD */
+        uint32_t rsvd3:1;
+        uint32_t bc:1;
+        uint32_t si:1;
+        uint32_t rsvd2:3;
+        uint32_t fs:1;
+        uint32_t ls:1;
+        uint32_t dfctl:8;
+        uint32_t type:8;
+        uint32_t rctl:8;
+#endif
+};
+
 /* IOCB Command template for all 64 bit FCP Initiator commands */
 typedef struct {
         ULP_BDL bdl;
@@ -2987,6 +3036,21 @@ typedef struct {
         uint32_t fcpt_Length;   /* transfer ready for IWRITE */
 } FCPT_FIELDS64;
 
+/* IOCB Command template for Async Status iocb commands */
+typedef struct {
+        uint32_t rsvd[4];
+        uint32_t param;
+#ifdef __BIG_ENDIAN_BITFIELD
+        uint16_t evt_code;              /* High order bits word 5 */
+        uint16_t sub_ctxt_tag;          /* Low  order bits word 5 */
+#else   /*  __LITTLE_ENDIAN_BITFIELD */
+        uint16_t sub_ctxt_tag;          /* High order bits word 5 */
+        uint16_t evt_code;              /* Low  order bits word 5 */
+#endif
+} ASYNCSTAT_FIELDS;
+#define ASYNC_TEMP_WARN         0x100
+#define ASYNC_TEMP_SAFE         0x101
+
 /* IOCB Command template for CMD_IOCB_RCV_ELS64_CX (0xB7)
    or CMD_IOCB_RCV_SEQ64_CX (0xB5) */
 
@@ -3004,7 +3068,26 @@ struct rcv_sli3 {
         struct ulp_bde64 bde2;
 };
 
+/* Structure used for a single HBQ entry */
+struct lpfc_hbq_entry {
+        struct ulp_bde64 bde;
+        uint32_t buffer_tag;
+};
 
+/* IOCB Command template for QUE_XRI64_CX (0xB3) command */
+typedef struct {
+        struct lpfc_hbq_entry   buff;
+        uint32_t                rsvd;
+        uint32_t                rsvd1;
+} QUE_XRI64_CX_FIELDS;
+
+struct que_xri64cx_ext_fields {
+        uint32_t        iotag64_low;
+        uint32_t        iotag64_high;
+        uint32_t        ebde_count;
+        uint32_t        rsvd;
+        struct lpfc_hbq_entry   buff[5];
+};
 
 typedef struct _IOCB {  /* IOCB structure */
         union {
@@ -3028,6 +3111,9 @@ typedef struct _IOCB {	/* IOCB structure */
                 XMT_SEQ_FIELDS64 xseq64;        /* XMIT / BCAST cmd */
                 FCPI_FIELDS64 fcpi64;   /* FCP 64 bit Initiator template */
                 FCPT_FIELDS64 fcpt64;   /* FCP 64 bit target template */
+                ASYNCSTAT_FIELDS asyncstat; /* async_status iocb */
+                QUE_XRI64_CX_FIELDS quexri64cx; /* que_xri64_cx fields */
+                struct rcv_seq64 rcvseq64;      /* RCV_SEQ64 and RCV_CONT64 */
 
                 uint32_t ulpWord[IOCB_WORD_SZ - 2];     /* generic 6 'words' */
         } un;
@@ -3085,6 +3171,10 @@ typedef struct _IOCB {	/* IOCB structure */
 
         union {
                 struct rcv_sli3 rcvsli3; /* words 8 - 15 */
+
+                /* words 8-31 used for que_xri_cx iocb */
+                struct que_xri64cx_ext_fields que_xri64cx_ext_words;
+
                 uint32_t sli3Words[24]; /* 96 extra bytes for SLI-3 */
         } unsli3;
 
@@ -3124,12 +3214,6 @@ typedef struct _IOCB {	/* IOCB structure */
 
 } IOCB_t;
 
-/* Structure used for a single HBQ entry */
-struct lpfc_hbq_entry {
-        struct ulp_bde64 bde;
-        uint32_t buffer_tag;
-};
-
 
 #define SLI1_SLIM_SIZE   (4 * 1024)
 
@@ -3172,6 +3256,8 @@ lpfc_is_LC_HBA(unsigned short device)
             (device == PCI_DEVICE_ID_BSMB) ||
             (device == PCI_DEVICE_ID_ZMID) ||
             (device == PCI_DEVICE_ID_ZSMB) ||
+            (device == PCI_DEVICE_ID_SAT_MID) ||
+            (device == PCI_DEVICE_ID_SAT_SMB) ||
             (device == PCI_DEVICE_ID_RFLY))
                 return 1;
         else
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index ecebdfa00470..3205f7488d1c 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -212,6 +212,18 @@ out_free_mbox:
         return 0;
 }
 
+/* Completion handler for config async event mailbox command. */
+static void
+lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
+{
+        if (pmboxq->mb.mbxStatus == MBX_SUCCESS)
+                phba->temp_sensor_support = 1;
+        else
+                phba->temp_sensor_support = 0;
+        mempool_free(pmboxq, phba->mbox_mem_pool);
+        return;
+}
+
 /************************************************************************/
 /*                                                                      */
 /*    lpfc_config_port_post                                             */
@@ -234,6 +246,15 @@ lpfc_config_port_post(struct lpfc_hba *phba)
         int i, j;
         int rc;
 
+        spin_lock_irq(&phba->hbalock);
+        /*
+         * If the Config port completed correctly the HBA is not
+         * over heated any more.
+         */
+        if (phba->over_temp_state == HBA_OVER_TEMP)
+                phba->over_temp_state = HBA_NORMAL_TEMP;
+        spin_unlock_irq(&phba->hbalock);
+
         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
         if (!pmb) {
                 phba->link_state = LPFC_HBA_ERROR;
@@ -343,7 +364,7 @@ lpfc_config_port_post(struct lpfc_hba *phba)
 
         phba->link_state = LPFC_LINK_DOWN;
 
-        /* Only process IOCBs on ring 0 till hba_state is READY */
+        /* Only process IOCBs on ELS ring till hba_state is READY */
         if (psli->ring[psli->extra_ring].cmdringaddr)
                 psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
         if (psli->ring[psli->fcp_ring].cmdringaddr)
@@ -409,7 +430,21 @@ lpfc_config_port_post(struct lpfc_hba *phba)
                 return -EIO;
         }
         /* MBOX buffer will be freed in mbox compl */
+        pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        lpfc_config_async(phba, pmb, LPFC_ELS_RING);
+        pmb->mbox_cmpl = lpfc_config_async_cmpl;
+        pmb->vport = phba->pport;
+        rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 
+        if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
+                lpfc_printf_log(phba,
+                                KERN_ERR,
+                                LOG_INIT,
+                                "0456 Adapter failed to issue "
+                                "ASYNCEVT_ENABLE mbox status x%x \n.",
+                                rc);
+                mempool_free(pmb, phba->mbox_mem_pool);
+        }
         return (0);
 }
 
@@ -449,6 +484,9 @@ lpfc_hba_down_post(struct lpfc_hba *phba)
         struct lpfc_sli *psli = &phba->sli;
         struct lpfc_sli_ring *pring;
         struct lpfc_dmabuf *mp, *next_mp;
+        struct lpfc_iocbq *iocb;
+        IOCB_t *cmd = NULL;
+        LIST_HEAD(completions);
         int i;
 
         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
@@ -464,16 +502,42 @@ lpfc_hba_down_post(struct lpfc_hba *phba)
                 }
         }
 
+        spin_lock_irq(&phba->hbalock);
         for (i = 0; i < psli->num_rings; i++) {
                 pring = &psli->ring[i];
+
+                /* At this point in time the HBA is either reset or DOA. Either
+                 * way, nothing should be on txcmplq as it will NEVER complete.
+                 */
+                list_splice_init(&pring->txcmplq, &completions);
+                pring->txcmplq_cnt = 0;
+                spin_unlock_irq(&phba->hbalock);
+
+                while (!list_empty(&completions)) {
+                        iocb = list_get_first(&completions, struct lpfc_iocbq,
+                                list);
+                        cmd = &iocb->iocb;
+                        list_del_init(&iocb->list);
+
+                        if (!iocb->iocb_cmpl)
+                                lpfc_sli_release_iocbq(phba, iocb);
+                        else {
+                                cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
+                                cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
+                                (iocb->iocb_cmpl) (phba, iocb, iocb);
+                        }
+                }
+
                 lpfc_sli_abort_iocb_ring(phba, pring);
+                spin_lock_irq(&phba->hbalock);
         }
+        spin_unlock_irq(&phba->hbalock);
 
         return 0;
 }
 
 /* HBA heart beat timeout handler */
-void
+static void
 lpfc_hb_timeout(unsigned long ptr)
 {
         struct lpfc_hba *phba;
@@ -512,8 +576,10 @@ void
 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
 {
         LPFC_MBOXQ_t *pmboxq;
+        struct lpfc_dmabuf *buf_ptr;
         int retval;
         struct lpfc_sli *psli = &phba->sli;
+        LIST_HEAD(completions);
 
         if ((phba->link_state == LPFC_HBA_ERROR) ||
                 (phba->pport->load_flag & FC_UNLOADING) ||
@@ -540,49 +606,88 @@ lpfc_hb_timeout_handler(struct lpfc_hba *phba)
         }
         spin_unlock_irq(&phba->pport->work_port_lock);
 
-        /* If there is no heart beat outstanding, issue a heartbeat command */
-        if (!phba->hb_outstanding) {
-                pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
-                if (!pmboxq) {
-                        mod_timer(&phba->hb_tmofunc,
-                                jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
-                        return;
+        if (phba->elsbuf_cnt &&
+                (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
+                spin_lock_irq(&phba->hbalock);
+                list_splice_init(&phba->elsbuf, &completions);
+                phba->elsbuf_cnt = 0;
+                phba->elsbuf_prev_cnt = 0;
+                spin_unlock_irq(&phba->hbalock);
+
+                while (!list_empty(&completions)) {
+                        list_remove_head(&completions, buf_ptr,
+                                struct lpfc_dmabuf, list);
+                        lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
+                        kfree(buf_ptr);
                 }
+        }
+        phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
 
-                lpfc_heart_beat(phba, pmboxq);
-                pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
-                pmboxq->vport = phba->pport;
-                retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
+        /* If there is no heart beat outstanding, issue a heartbeat command */
+        if (phba->cfg_enable_hba_heartbeat) {
+                if (!phba->hb_outstanding) {
+                        pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
+                        if (!pmboxq) {
+                                mod_timer(&phba->hb_tmofunc,
+                                          jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
+                                return;
+                        }
 
-                if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
-                        mempool_free(pmboxq, phba->mbox_mem_pool);
+                        lpfc_heart_beat(phba, pmboxq);
+                        pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
+                        pmboxq->vport = phba->pport;
+                        retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
+
+                        if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
+                                mempool_free(pmboxq, phba->mbox_mem_pool);
+                                mod_timer(&phba->hb_tmofunc,
+                                          jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
+                                return;
+                        }
                         mod_timer(&phba->hb_tmofunc,
-                                jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
+                                  jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
+                        phba->hb_outstanding = 1;
                         return;
+                } else {
+                        /*
+                        * If heart beat timeout called with hb_outstanding set
+                        * we need to take the HBA offline.
+                        */
+                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                        "0459 Adapter heartbeat failure, "
+                                        "taking this port offline.\n");
+
+                        spin_lock_irq(&phba->hbalock);
+                        psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
+                        spin_unlock_irq(&phba->hbalock);
+
+                        lpfc_offline_prep(phba);
+                        lpfc_offline(phba);
+                        lpfc_unblock_mgmt_io(phba);
+                        phba->link_state = LPFC_HBA_ERROR;
+                        lpfc_hba_down_post(phba);
                 }
-                mod_timer(&phba->hb_tmofunc,
-                        jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
-                phba->hb_outstanding = 1;
-                return;
-        } else {
-                /*
-                 * If heart beat timeout called with hb_outstanding set we
-                 * need to take the HBA offline.
-                 */
-                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
-                                "0459 Adapter heartbeat failure, taking "
-                                "this port offline.\n");
+        }
+}
 
-                spin_lock_irq(&phba->hbalock);
-                psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
-                spin_unlock_irq(&phba->hbalock);
+static void
+lpfc_offline_eratt(struct lpfc_hba *phba)
+{
+        struct lpfc_sli   *psli = &phba->sli;
 
-                lpfc_offline_prep(phba);
-                lpfc_offline(phba);
-                lpfc_unblock_mgmt_io(phba);
-                phba->link_state = LPFC_HBA_ERROR;
-                lpfc_hba_down_post(phba);
-        }
+        spin_lock_irq(&phba->hbalock);
+        psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
+        spin_unlock_irq(&phba->hbalock);
+        lpfc_offline_prep(phba);
+
+        lpfc_offline(phba);
+        lpfc_reset_barrier(phba);
+        lpfc_sli_brdreset(phba);
+        lpfc_hba_down_post(phba);
+        lpfc_sli_brdready(phba, HS_MBRDY);
+        lpfc_unblock_mgmt_io(phba);
+        phba->link_state = LPFC_HBA_ERROR;
+        return;
 }
 
 /************************************************************************/
@@ -601,6 +706,8 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
         struct lpfc_sli_ring  *pring;
         struct lpfc_vport **vports;
         uint32_t event_data;
+        unsigned long temperature;
+        struct temp_event temp_event_data;
         struct Scsi_Host  *shost;
         int i;
 
@@ -608,6 +715,9 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
          * since we cannot communicate with the pci card anyway. */
         if (pci_channel_offline(phba->pcidev))
                 return;
+        /* If resets are disabled then leave the HBA alone and return */
+        if (!phba->cfg_enable_hba_reset)
+                return;
 
         if (phba->work_hs & HS_FFER6 ||
             phba->work_hs & HS_FFER5) {
@@ -620,14 +730,14 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
                 vports = lpfc_create_vport_work_array(phba);
                 if (vports != NULL)
                         for(i = 0;
-                            i < LPFC_MAX_VPORTS && vports[i] != NULL;
+                            i <= phba->max_vpi && vports[i] != NULL;
                             i++){
                                 shost = lpfc_shost_from_vport(vports[i]);
                                 spin_lock_irq(shost->host_lock);
                                 vports[i]->fc_flag |= FC_ESTABLISH_LINK;
                                 spin_unlock_irq(shost->host_lock);
                         }
-                lpfc_destroy_vport_work_array(vports);
+                lpfc_destroy_vport_work_array(phba, vports);
                 spin_lock_irq(&phba->hbalock);
                 psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
                 spin_unlock_irq(&phba->hbalock);
@@ -655,6 +765,31 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
                         return;
                 }
                 lpfc_unblock_mgmt_io(phba);
+        } else if (phba->work_hs & HS_CRIT_TEMP) {
+                temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
+                temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
+                temp_event_data.event_code = LPFC_CRIT_TEMP;
+                temp_event_data.data = (uint32_t)temperature;
+
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "0459 Adapter maximum temperature exceeded "
+                                "(%ld), taking this port offline "
+                                "Data: x%x x%x x%x\n",
+                                temperature, phba->work_hs,
+                                phba->work_status[0], phba->work_status[1]);
+
+                shost = lpfc_shost_from_vport(phba->pport);
+                fc_host_post_vendor_event(shost, fc_get_event_number(),
+                                          sizeof(temp_event_data),
+                                          (char *) &temp_event_data,
+                                          SCSI_NL_VID_TYPE_PCI
+                                          | PCI_VENDOR_ID_EMULEX);
+
+                spin_lock_irq(&phba->hbalock);
+                phba->over_temp_state = HBA_OVER_TEMP;
+                spin_unlock_irq(&phba->hbalock);
+                lpfc_offline_eratt(phba);
+
         } else {
                 /* The if clause above forces this code path when the status
                  * failure is a value other than FFER6.  Do not call the offline
@@ -672,14 +807,7 @@ lpfc_handle_eratt(struct lpfc_hba *phba)
                                 sizeof(event_data), (char *) &event_data,
                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
 
-                spin_lock_irq(&phba->hbalock);
-                psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
-                spin_unlock_irq(&phba->hbalock);
-                lpfc_offline_prep(phba);
-                lpfc_offline(phba);
-                lpfc_unblock_mgmt_io(phba);
-                phba->link_state = LPFC_HBA_ERROR;
-                lpfc_hba_down_post(phba);
+                lpfc_offline_eratt(phba);
         }
 }
 
@@ -699,21 +827,25 @@ lpfc_handle_latt(struct lpfc_hba *phba)
         LPFC_MBOXQ_t *pmb;
         volatile uint32_t control;
         struct lpfc_dmabuf *mp;
-        int rc = -ENOMEM;
+        int rc = 0;
 
         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
-        if (!pmb)
+        if (!pmb) {
+                rc = 1;
                 goto lpfc_handle_latt_err_exit;
+        }
 
         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
-        if (!mp)
+        if (!mp) {
+                rc = 2;
                 goto lpfc_handle_latt_free_pmb;
+        }
 
         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
-        if (!mp->virt)
+        if (!mp->virt) {
+                rc = 3;
                 goto lpfc_handle_latt_free_mp;
-
-        rc = -EIO;
+        }
 
         /* Cleanup any outstanding ELS commands */
         lpfc_els_flush_all_cmd(phba);
@@ -722,9 +854,11 @@ lpfc_handle_latt(struct lpfc_hba *phba)
         lpfc_read_la(phba, pmb, mp);
         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_la;
         pmb->vport = vport;
-        rc = lpfc_sli_issue_mbox (phba, pmb, (MBX_NOWAIT | MBX_STOP_IOCB));
-        if (rc == MBX_NOT_FINISHED)
+        rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
+        if (rc == MBX_NOT_FINISHED) {
+                rc = 4;
                 goto lpfc_handle_latt_free_mbuf;
+        }
 
         /* Clear Link Attention in HA REG */
         spin_lock_irq(&phba->hbalock);
@@ -756,10 +890,8 @@ lpfc_handle_latt_err_exit:
         lpfc_linkdown(phba);
         phba->link_state = LPFC_HBA_ERROR;
 
-        /* The other case is an error from issue_mbox */
-        if (rc == -ENOMEM)
-                lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
-                                "0300 READ_LA: no buffers\n");
+        lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
+                     "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
 
         return;
 }
@@ -1088,9 +1220,8 @@ lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt,
                 /* Allocate buffer to post */
                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
                 if (mp1)
-                    mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
-                                                &mp1->phys);
-                if (mp1 == 0 || mp1->virt == 0) {
+                    mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
+                if (!mp1 || !mp1->virt) {
                         kfree(mp1);
                         lpfc_sli_release_iocbq(phba, iocb);
                         pring->missbufcnt = cnt;
@@ -1104,7 +1235,7 @@ lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt,
                         if (mp2)
                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
                                                             &mp2->phys);
-                        if (mp2 == 0 || mp2->virt == 0) {
+                        if (!mp2 || !mp2->virt) {
                                 kfree(mp2);
                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
                                 kfree(mp1);
@@ -1280,15 +1411,39 @@ lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
         kfree(HashWorking);
 }
 
-static void
+void
 lpfc_cleanup(struct lpfc_vport *vport)
 {
+        struct lpfc_hba   *phba = vport->phba;
         struct lpfc_nodelist *ndlp, *next_ndlp;
+        int i = 0;
 
-        /* clean up phba - lpfc specific */
-        lpfc_can_disctmo(vport);
-        list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
-                lpfc_nlp_put(ndlp);
+        if (phba->link_state > LPFC_LINK_DOWN)
+                lpfc_port_link_failure(vport);
+
+        list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
+                if (ndlp->nlp_type & NLP_FABRIC)
+                        lpfc_disc_state_machine(vport, ndlp, NULL,
+                                        NLP_EVT_DEVICE_RECOVERY);
+                lpfc_disc_state_machine(vport, ndlp, NULL,
+                                             NLP_EVT_DEVICE_RM);
+        }
+
+        /* At this point, ALL ndlp's should be gone
+         * because of the previous NLP_EVT_DEVICE_RM.
+         * Lets wait for this to happen, if needed.
+         */
+        while (!list_empty(&vport->fc_nodes)) {
+
+                if (i++ > 3000) {
+                        lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
+                                "0233 Nodelist not empty\n");
+                        break;
+                }
+
+                /* Wait for any activity on ndlps to settle */
+                msleep(10);
+        }
         return;
 }
 
@@ -1307,14 +1462,14 @@ lpfc_establish_link_tmo(unsigned long ptr)
                         phba->pport->fc_flag, phba->pport->port_state);
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
                         struct Scsi_Host *shost;
                         shost = lpfc_shost_from_vport(vports[i]);
                         spin_lock_irqsave(shost->host_lock, iflag);
                         vports[i]->fc_flag &= ~FC_ESTABLISH_LINK;
                         spin_unlock_irqrestore(shost->host_lock, iflag);
                 }
-        lpfc_destroy_vport_work_array(vports);
+        lpfc_destroy_vport_work_array(phba, vports);
 }
 
 void
@@ -1339,6 +1494,16 @@ lpfc_stop_phba_timers(struct lpfc_hba *phba)
         return;
 }
 
+static void
+lpfc_block_mgmt_io(struct lpfc_hba * phba)
+{
+        unsigned long iflag;
+
+        spin_lock_irqsave(&phba->hbalock, iflag);
+        phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
+        spin_unlock_irqrestore(&phba->hbalock, iflag);
+}
+
 int
 lpfc_online(struct lpfc_hba *phba)
 {
@@ -1369,7 +1534,7 @@ lpfc_online(struct lpfc_hba *phba)
 
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
                         struct Scsi_Host *shost;
                         shost = lpfc_shost_from_vport(vports[i]);
                         spin_lock_irq(shost->host_lock);
@@ -1378,23 +1543,13 @@ lpfc_online(struct lpfc_hba *phba)
                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
                         spin_unlock_irq(shost->host_lock);
                 }
-                lpfc_destroy_vport_work_array(vports);
+                lpfc_destroy_vport_work_array(phba, vports);
 
         lpfc_unblock_mgmt_io(phba);
         return 0;
 }
 
 void
-lpfc_block_mgmt_io(struct lpfc_hba * phba)
-{
-        unsigned long iflag;
-
-        spin_lock_irqsave(&phba->hbalock, iflag);
-        phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
-        spin_unlock_irqrestore(&phba->hbalock, iflag);
-}
-
-void
 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
 {
         unsigned long iflag;
@@ -1409,6 +1564,8 @@ lpfc_offline_prep(struct lpfc_hba * phba)
 {
         struct lpfc_vport *vport = phba->pport;
         struct lpfc_nodelist  *ndlp, *next_ndlp;
+        struct lpfc_vport **vports;
+        int i;
 
         if (vport->fc_flag & FC_OFFLINE_MODE)
                 return;
@@ -1417,10 +1574,34 @@ lpfc_offline_prep(struct lpfc_hba * phba)
 
         lpfc_linkdown(phba);
 
-        /* Issue an unreg_login to all nodes */
-        list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp)
-                if (ndlp->nlp_state != NLP_STE_UNUSED_NODE)
-                        lpfc_unreg_rpi(vport, ndlp);
+        /* Issue an unreg_login to all nodes on all vports */
+        vports = lpfc_create_vport_work_array(phba);
+        if (vports != NULL) {
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+                        struct Scsi_Host *shost;
+
+                        if (vports[i]->load_flag & FC_UNLOADING)
+                                continue;
+                        shost = lpfc_shost_from_vport(vports[i]);
+                        list_for_each_entry_safe(ndlp, next_ndlp,
+                                                 &vports[i]->fc_nodes,
+                                                 nlp_listp) {
+                                if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
+                                        continue;
+                                if (ndlp->nlp_type & NLP_FABRIC) {
+                                        lpfc_disc_state_machine(vports[i], ndlp,
+                                                NULL, NLP_EVT_DEVICE_RECOVERY);
+                                        lpfc_disc_state_machine(vports[i], ndlp,
+                                                NULL, NLP_EVT_DEVICE_RM);
+                                }
+                                spin_lock_irq(shost->host_lock);
+                                ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+                                spin_unlock_irq(shost->host_lock);
+                                lpfc_unreg_rpi(vports[i], ndlp);
+                        }
+                }
+        }
+        lpfc_destroy_vport_work_array(phba, vports);
 
         lpfc_sli_flush_mbox_queue(phba);
 }
@@ -1439,9 +1620,9 @@ lpfc_offline(struct lpfc_hba *phba)
         lpfc_stop_phba_timers(phba);
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++)
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
                         lpfc_stop_vport_timers(vports[i]);
-        lpfc_destroy_vport_work_array(vports);
+        lpfc_destroy_vport_work_array(phba, vports);
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                         "0460 Bring Adapter offline\n");
         /* Bring down the SLI Layer and cleanup.  The HBA is offline
@@ -1452,15 +1633,14 @@ lpfc_offline(struct lpfc_hba *phba)
         spin_unlock_irq(&phba->hbalock);
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
                         shost = lpfc_shost_from_vport(vports[i]);
-                        lpfc_cleanup(vports[i]);
                         spin_lock_irq(shost->host_lock);
                         vports[i]->work_port_events = 0;
                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
                         spin_unlock_irq(shost->host_lock);
                 }
-        lpfc_destroy_vport_work_array(vports);
+        lpfc_destroy_vport_work_array(phba, vports);
 }
 
 /******************************************************************************
@@ -1674,6 +1854,8 @@ void lpfc_host_attrib_init(struct Scsi_Host *shost)
         fc_host_supported_speeds(shost) = 0;
         if (phba->lmt & LMT_10Gb)
                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
+        if (phba->lmt & LMT_8Gb)
+                fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
         if (phba->lmt & LMT_4Gb)
                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
         if (phba->lmt & LMT_2Gb)
@@ -1707,13 +1889,14 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
         struct Scsi_Host  *shost = NULL;
         void *ptr;
         unsigned long bar0map_len, bar2map_len;
-        int error = -ENODEV;
+        int error = -ENODEV, retval;
         int  i, hbq_count;
         uint16_t iotag;
+        int bars = pci_select_bars(pdev, IORESOURCE_MEM);
 
-        if (pci_enable_device(pdev))
+        if (pci_enable_device_bars(pdev, bars))
                 goto out;
-        if (pci_request_regions(pdev, LPFC_DRIVER_NAME))
+        if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
                 goto out_disable_device;
 
         phba = kzalloc(sizeof (struct lpfc_hba), GFP_KERNEL);
@@ -1823,9 +2006,11 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
         lpfc_sli_setup(phba);
         lpfc_sli_queue_setup(phba);
 
-        error = lpfc_mem_alloc(phba);
-        if (error)
+        retval = lpfc_mem_alloc(phba);
+        if (retval) {
+                error = retval;
                 goto out_free_hbqslimp;
+        }
 
         /* Initialize and populate the iocb list per host.  */
         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
@@ -1880,6 +2065,9 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
         /* Initialize list of fabric iocbs */
         INIT_LIST_HEAD(&phba->fabric_iocb_list);
 
+        /* Initialize list to save ELS buffers */
+        INIT_LIST_HEAD(&phba->elsbuf);
+
         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
         if (!vport)
                 goto out_kthread_stop;
@@ -1891,8 +2079,8 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
         pci_set_drvdata(pdev, shost);
 
         if (phba->cfg_use_msi) {
-                error = pci_enable_msi(phba->pcidev);
-                if (!error)
+                retval = pci_enable_msi(phba->pcidev);
+                if (!retval)
                         phba->using_msi = 1;
                 else
                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
@@ -1900,11 +2088,12 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
                                         "with IRQ\n");
         }
 
-        error = request_irq(phba->pcidev->irq, lpfc_intr_handler, IRQF_SHARED,
+        retval = request_irq(phba->pcidev->irq, lpfc_intr_handler, IRQF_SHARED,
                             LPFC_DRIVER_NAME, phba);
-        if (error) {
+        if (retval) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                         "0451 Enable interrupt handler failed\n");
+                error = retval;
                 goto out_disable_msi;
         }
 
@@ -1914,11 +2103,15 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
 
-        if (lpfc_alloc_sysfs_attr(vport))
+        if (lpfc_alloc_sysfs_attr(vport)) {
+                error = -ENOMEM;
                 goto out_free_irq;
+        }
 
-        if (lpfc_sli_hba_setup(phba))
+        if (lpfc_sli_hba_setup(phba)) {
+                error = -ENODEV;
                 goto out_remove_device;
+        }
 
         /*
          * hba setup may have changed the hba_queue_depth so we need to adjust
@@ -1975,7 +2168,7 @@ out_idr_remove:
 out_free_phba:
         kfree(phba);
 out_release_regions:
-        pci_release_regions(pdev);
+        pci_release_selected_regions(pdev, bars);
 out_disable_device:
         pci_disable_device(pdev);
 out:
@@ -1991,6 +2184,8 @@ lpfc_pci_remove_one(struct pci_dev *pdev)
         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
         struct lpfc_hba   *phba = vport->phba;
+        int bars = pci_select_bars(pdev, IORESOURCE_MEM);
+
         spin_lock_irq(&phba->hbalock);
         vport->load_flag |= FC_UNLOADING;
         spin_unlock_irq(&phba->hbalock);
@@ -1998,8 +2193,12 @@ lpfc_pci_remove_one(struct pci_dev *pdev)
         kfree(vport->vname);
         lpfc_free_sysfs_attr(vport);
 
+        kthread_stop(phba->worker_thread);
+
         fc_remove_host(shost);
         scsi_remove_host(shost);
+        lpfc_cleanup(vport);
+
         /*
          * Bring down the SLI Layer. This step disable all interrupts,
          * clears the rings, discards all mailbox commands, and resets
@@ -2014,9 +2213,6 @@ lpfc_pci_remove_one(struct pci_dev *pdev)
         spin_unlock_irq(&phba->hbalock);
 
         lpfc_debugfs_terminate(vport);
-        lpfc_cleanup(vport);
-
-        kthread_stop(phba->worker_thread);
 
         /* Release the irq reservation */
         free_irq(phba->pcidev->irq, phba);
@@ -2048,7 +2244,7 @@ lpfc_pci_remove_one(struct pci_dev *pdev)
 
         kfree(phba);
 
-        pci_release_regions(pdev);
+        pci_release_selected_regions(pdev, bars);
         pci_disable_device(pdev);
 }
 
@@ -2239,12 +2435,22 @@ lpfc_init(void)
         printk(LPFC_MODULE_DESC "\n");
         printk(LPFC_COPYRIGHT "\n");
 
+        if (lpfc_enable_npiv) {
+                lpfc_transport_functions.vport_create = lpfc_vport_create;
+                lpfc_transport_functions.vport_delete = lpfc_vport_delete;
+        }
         lpfc_transport_template =
                                 fc_attach_transport(&lpfc_transport_functions);
-        lpfc_vport_transport_template =
-                        fc_attach_transport(&lpfc_vport_transport_functions);
-        if (!lpfc_transport_template || !lpfc_vport_transport_template)
+        if (lpfc_transport_template == NULL)
                 return -ENOMEM;
+        if (lpfc_enable_npiv) {
+                lpfc_vport_transport_template =
+                        fc_attach_transport(&lpfc_vport_transport_functions);
+                if (lpfc_vport_transport_template == NULL) {
+                        fc_release_transport(lpfc_transport_template);
+                        return -ENOMEM;
+                }
+        }
         error = pci_register_driver(&lpfc_driver);
         if (error) {
                 fc_release_transport(lpfc_transport_template);
@@ -2259,7 +2465,8 @@ lpfc_exit(void)
 {
         pci_unregister_driver(&lpfc_driver);
         fc_release_transport(lpfc_transport_template);
-        fc_release_transport(lpfc_vport_transport_template);
+        if (lpfc_enable_npiv)
+                fc_release_transport(lpfc_vport_transport_template);
 }
 
 module_init(lpfc_init);
diff --git a/drivers/scsi/lpfc/lpfc_logmsg.h b/drivers/scsi/lpfc/lpfc_logmsg.h
index 626e4d878725..c5841d7565f7 100644
--- a/drivers/scsi/lpfc/lpfc_logmsg.h
+++ b/drivers/scsi/lpfc/lpfc_logmsg.h
@@ -26,6 +26,7 @@
 #define LOG_IP                        0x20      /* IP traffic history */
 #define LOG_FCP                       0x40      /* FCP traffic history */
 #define LOG_NODE                      0x80      /* Node table events */
+#define LOG_TEMP                      0x100     /* Temperature sensor events */
 #define LOG_MISC                      0x400     /* Miscellaneous events */
 #define LOG_SLI                       0x800     /* SLI events */
 #define LOG_FCP_ERROR                 0x1000    /* log errors, not underruns */
diff --git a/drivers/scsi/lpfc/lpfc_mbox.c b/drivers/scsi/lpfc/lpfc_mbox.c
index a592733664e9..dfc63f6ccd7b 100644
--- a/drivers/scsi/lpfc/lpfc_mbox.c
+++ b/drivers/scsi/lpfc/lpfc_mbox.c
@@ -82,6 +82,24 @@ lpfc_read_nv(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 }
 
 /**********************************************/
+/*  lpfc_config_async  Issue a                */
+/*  MBX_ASYNC_EVT_ENABLE mailbox command      */
+/**********************************************/
+void
+lpfc_config_async(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb,
+                uint32_t ring)
+{
+        MAILBOX_t *mb;
+
+        mb = &pmb->mb;
+        memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
+        mb->mbxCommand = MBX_ASYNCEVT_ENABLE;
+        mb->un.varCfgAsyncEvent.ring = ring;
+        mb->mbxOwner = OWN_HOST;
+        return;
+}
+
+/**********************************************/
 /*  lpfc_heart_beat  Issue a HEART_BEAT       */
 /*                mailbox command             */
 /**********************************************/
@@ -270,8 +288,10 @@ lpfc_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb, int vpi)
 
         /* Get a buffer to hold the HBAs Service Parameters */
 
-        if (((mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == 0) ||
-            ((mp->virt = lpfc_mbuf_alloc(phba, 0, &(mp->phys))) == 0)) {
+        mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
+        if (mp)
+                mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
+        if (!mp || !mp->virt) {
                 kfree(mp);
                 mb->mbxCommand = MBX_READ_SPARM64;
                 /* READ_SPARAM: no buffers */
@@ -369,8 +389,10 @@ lpfc_reg_login(struct lpfc_hba *phba, uint16_t vpi, uint32_t did,
         mb->mbxOwner = OWN_HOST;
 
         /* Get a buffer to hold NPorts Service Parameters */
-        if (((mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == NULL) ||
-            ((mp->virt = lpfc_mbuf_alloc(phba, 0, &(mp->phys))) == 0)) {
+        mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
+        if (mp)
+                mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
+        if (!mp || !mp->virt) {
                 kfree(mp);
                 mb->mbxCommand = MBX_REG_LOGIN64;
                 /* REG_LOGIN: no buffers */
@@ -874,7 +896,7 @@ lpfc_mbox_tmo_val(struct lpfc_hba *phba, int cmd)
         case MBX_DOWN_LOAD:     /* 0x1C */
         case MBX_DEL_LD_ENTRY:  /* 0x1D */
         case MBX_LOAD_AREA:     /* 0x81 */
-        case MBX_FLASH_WR_ULA:  /* 0x98 */
+        case MBX_WRITE_WWN:     /* 0x98 */
         case MBX_LOAD_EXP_ROM:  /* 0x9C */
                 return LPFC_MBOX_TMO_FLASH_CMD;
         }
diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 43c3b8a0d76a..6dc5ab8d6716 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -98,6 +98,7 @@ lpfc_mem_alloc(struct lpfc_hba * phba)
 
  fail_free_hbq_pool:
         lpfc_sli_hbqbuf_free_all(phba);
+        pci_pool_destroy(phba->lpfc_hbq_pool);
  fail_free_nlp_mem_pool:
         mempool_destroy(phba->nlp_mem_pool);
         phba->nlp_mem_pool = NULL;
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index 880af0cd463d..4a0e3406e37a 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -287,6 +287,24 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
         lp = (uint32_t *) pcmd->virt;
         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
+        if (wwn_to_u64(sp->portName.u.wwn) == 0) {
+                lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                                 "0140 PLOGI Reject: invalid nname\n");
+                stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+                stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
+                lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+                        NULL);
+                return 0;
+        }
+        if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
+                lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                                 "0141 PLOGI Reject: invalid pname\n");
+                stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+                stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
+                lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+                        NULL);
+                return 0;
+        }
         if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
                 /* Reject this request because invalid parameters */
                 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
@@ -343,8 +361,7 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                 lpfc_config_link(phba, mbox);
                 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
                 mbox->vport = vport;
-                rc = lpfc_sli_issue_mbox
-                        (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
+                rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
                 if (rc == MBX_NOT_FINISHED) {
                         mempool_free(mbox, phba->mbox_mem_pool);
                         goto out;
@@ -407,6 +424,61 @@ lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                         ndlp, mbox);
                 return 1;
         }
+
+        /* If the remote NPort logs into us, before we can initiate
+         * discovery to them, cleanup the NPort from discovery accordingly.
+         */
+        if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
+                spin_lock_irq(shost->host_lock);
+                ndlp->nlp_flag &= ~NLP_DELAY_TMO;
+                spin_unlock_irq(shost->host_lock);
+                del_timer_sync(&ndlp->nlp_delayfunc);
+                ndlp->nlp_last_elscmd = 0;
+
+                if (!list_empty(&ndlp->els_retry_evt.evt_listp))
+                        list_del_init(&ndlp->els_retry_evt.evt_listp);
+
+                if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+                        spin_lock_irq(shost->host_lock);
+                        ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+                        spin_unlock_irq(shost->host_lock);
+
+                        if ((ndlp->nlp_flag & NLP_ADISC_SND) &&
+                                (vport->num_disc_nodes)) {
+                                /* Check to see if there are more
+                                 * ADISCs to be sent
+                                 */
+                                lpfc_more_adisc(vport);
+
+                                if ((vport->num_disc_nodes == 0) &&
+                                        (vport->fc_npr_cnt))
+                                        lpfc_els_disc_plogi(vport);
+
+                                if (vport->num_disc_nodes == 0) {
+                                        spin_lock_irq(shost->host_lock);
+                                        vport->fc_flag &= ~FC_NDISC_ACTIVE;
+                                        spin_unlock_irq(shost->host_lock);
+                                        lpfc_can_disctmo(vport);
+                                        lpfc_end_rscn(vport);
+                                }
+                        }
+                        else if (vport->num_disc_nodes) {
+                                /* Check to see if there are more
+                                 * PLOGIs to be sent
+                                 */
+                                lpfc_more_plogi(vport);
+
+                                if (vport->num_disc_nodes == 0) {
+                                        spin_lock_irq(shost->host_lock);
+                                        vport->fc_flag &= ~FC_NDISC_ACTIVE;
+                                        spin_unlock_irq(shost->host_lock);
+                                        lpfc_can_disctmo(vport);
+                                        lpfc_end_rscn(vport);
+                                }
+                        }
+                }
+        }
+
         lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
         return 1;
 
@@ -501,12 +573,9 @@ lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                 spin_unlock_irq(shost->host_lock);
 
                 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
-                ndlp->nlp_prev_state = ndlp->nlp_state;
-                lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
-        } else {
-                ndlp->nlp_prev_state = ndlp->nlp_state;
-                lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
         }
+        ndlp->nlp_prev_state = ndlp->nlp_state;
+        lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
 
         spin_lock_irq(shost->host_lock);
         ndlp->nlp_flag &= ~NLP_NPR_ADISC;
@@ -594,6 +663,25 @@ lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         return ndlp->nlp_state;
 }
 
+static uint32_t
+lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+                  void *arg, uint32_t evt)
+{
+        /* This transition is only legal if we previously
+         * rcv'ed a PLOGI. Since we don't want 2 discovery threads
+         * working on the same NPortID, do nothing for this thread
+         * to stop it.
+         */
+        if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
+                lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
+                         "0253 Illegal State Transition: node x%x "
+                         "event x%x, state x%x Data: x%x x%x\n",
+                         ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
+                         ndlp->nlp_flag);
+        }
+        return ndlp->nlp_state;
+}
+
 /* Start of Discovery State Machine routines */
 
 static uint32_t
@@ -605,11 +693,8 @@ lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         cmdiocb = (struct lpfc_iocbq *) arg;
 
         if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
-                ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
-                lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
                 return ndlp->nlp_state;
         }
-        lpfc_drop_node(vport, ndlp);
         return NLP_STE_FREED_NODE;
 }
 
@@ -618,7 +703,6 @@ lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                          void *arg, uint32_t evt)
 {
         lpfc_issue_els_logo(vport, ndlp, 0);
-        lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
         return ndlp->nlp_state;
 }
 
@@ -633,7 +717,6 @@ lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
         ndlp->nlp_flag |= NLP_LOGO_ACC;
         spin_unlock_irq(shost->host_lock);
         lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
-        lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
 
         return ndlp->nlp_state;
 }
@@ -642,7 +725,6 @@ static uint32_t
 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                            void *arg, uint32_t evt)
 {
-        lpfc_drop_node(vport, ndlp);
         return NLP_STE_FREED_NODE;
 }
 
@@ -650,7 +732,6 @@ static uint32_t
 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                            void *arg, uint32_t evt)
 {
-        lpfc_drop_node(vport, ndlp);
         return NLP_STE_FREED_NODE;
 }
 
@@ -752,6 +833,7 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
                             uint32_t evt)
 {
         struct lpfc_hba    *phba = vport->phba;
+        struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
         struct lpfc_iocbq  *cmdiocb, *rspiocb;
         struct lpfc_dmabuf *pcmd, *prsp, *mp;
         uint32_t *lp;
@@ -778,6 +860,12 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
 
         lp = (uint32_t *) prsp->virt;
         sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
+        if (wwn_to_u64(sp->portName.u.wwn) == 0 ||
+            wwn_to_u64(sp->nodeName.u.wwn) == 0) {
+                lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+                                 "0142 PLOGI RSP: Invalid WWN.\n");
+                goto out;
+        }
         if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
                 goto out;
         /* PLOGI chkparm OK */
@@ -828,13 +916,15 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
                 }
                 mbox->context2 = lpfc_nlp_get(ndlp);
                 mbox->vport = vport;
-                if (lpfc_sli_issue_mbox(phba, mbox,
-                                        (MBX_NOWAIT | MBX_STOP_IOCB))
+                if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
                     != MBX_NOT_FINISHED) {
                         lpfc_nlp_set_state(vport, ndlp,
                                            NLP_STE_REG_LOGIN_ISSUE);
                         return ndlp->nlp_state;
                 }
+                /* decrement node reference count to the failed mbox
+                 * command
+                 */
                 lpfc_nlp_put(ndlp);
                 mp = (struct lpfc_dmabuf *) mbox->context1;
                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
@@ -864,13 +954,27 @@ out:
                                  "0261 Cannot Register NameServer login\n");
         }
 
-        /* Free this node since the driver cannot login or has the wrong
-           sparm */
-        lpfc_drop_node(vport, ndlp);
+        spin_lock_irq(shost->host_lock);
+        ndlp->nlp_flag |= NLP_DEFER_RM;
+        spin_unlock_irq(shost->host_lock);
         return NLP_STE_FREED_NODE;
 }
 
 static uint32_t
+lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+                           void *arg, uint32_t evt)
+{
+        return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
+        struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
+{
+        return ndlp->nlp_state;
+}
+
+static uint32_t
 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
                            void *arg, uint32_t evt)
 {
@@ -1137,7 +1241,7 @@ lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
                    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
                         mp = (struct lpfc_dmabuf *) (mb->context1);
                         if (mp) {
-                                lpfc_mbuf_free(phba, mp->virt, mp->phys);
+                                __lpfc_mbuf_free(phba, mp->virt, mp->phys);
                                 kfree(mp);
                         }
                         lpfc_nlp_put(ndlp);
@@ -1197,8 +1301,8 @@ lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
                  * retry discovery.
                  */
                 if (mb->mbxStatus == MBXERR_RPI_FULL) {
-                        ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
-                        lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
+                        ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+                        lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
                         return ndlp->nlp_state;
                 }
 
@@ -1378,7 +1482,7 @@ out:
                 lpfc_issue_els_logo(vport, ndlp, 0);
 
                 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
-                lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
+                lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
                 return ndlp->nlp_state;
         }
 
@@ -1753,7 +1857,7 @@ lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
 
         irsp = &rspiocb->iocb;
         if (irsp->ulpStatus) {
-                lpfc_drop_node(vport, ndlp);
+                ndlp->nlp_flag |= NLP_DEFER_RM;
                 return NLP_STE_FREED_NODE;
         }
         return ndlp->nlp_state;
@@ -1942,9 +2046,9 @@ static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
         lpfc_rcv_els_plogi_issue,       /* RCV_PRLO        */
         lpfc_cmpl_plogi_plogi_issue,    /* CMPL_PLOGI      */
         lpfc_disc_illegal,              /* CMPL_PRLI       */
-        lpfc_disc_illegal,              /* CMPL_LOGO       */
+        lpfc_cmpl_logo_plogi_issue,     /* CMPL_LOGO       */
         lpfc_disc_illegal,              /* CMPL_ADISC      */
-        lpfc_disc_illegal,              /* CMPL_REG_LOGIN  */
+        lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN  */
         lpfc_device_rm_plogi_issue,     /* DEVICE_RM       */
         lpfc_device_recov_plogi_issue,  /* DEVICE_RECOVERY */
 
@@ -1968,7 +2072,7 @@ static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
         lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC       */
         lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC       */
         lpfc_rcv_prlo_reglogin_issue,   /* RCV_PRLO        */
-        lpfc_disc_illegal,              /* CMPL_PLOGI      */
+        lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
         lpfc_disc_illegal,              /* CMPL_PRLI       */
         lpfc_disc_illegal,              /* CMPL_LOGO       */
         lpfc_disc_illegal,              /* CMPL_ADISC      */
@@ -1982,7 +2086,7 @@ static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
         lpfc_rcv_padisc_prli_issue,     /* RCV_ADISC       */
         lpfc_rcv_padisc_prli_issue,     /* RCV_PDISC       */
         lpfc_rcv_prlo_prli_issue,       /* RCV_PRLO        */
-        lpfc_disc_illegal,              /* CMPL_PLOGI      */
+        lpfc_cmpl_plogi_illegal,        /* CMPL_PLOGI      */
         lpfc_cmpl_prli_prli_issue,      /* CMPL_PRLI       */
         lpfc_disc_illegal,              /* CMPL_LOGO       */
         lpfc_disc_illegal,              /* CMPL_ADISC      */
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 4e46045dea6d..6483c62730b3 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -130,7 +130,7 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
 
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
                         shost = lpfc_shost_from_vport(vports[i]);
                         shost_for_each_device(sdev, shost) {
                                 new_queue_depth =
@@ -151,7 +151,7 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
                                                         new_queue_depth);
                         }
                 }
-        lpfc_destroy_vport_work_array(vports);
+        lpfc_destroy_vport_work_array(phba, vports);
         atomic_set(&phba->num_rsrc_err, 0);
         atomic_set(&phba->num_cmd_success, 0);
 }
@@ -166,7 +166,7 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba)
 
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
-                for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) {
+                for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
                         shost = lpfc_shost_from_vport(vports[i]);
                         shost_for_each_device(sdev, shost) {
                                 if (sdev->ordered_tags)
@@ -179,7 +179,7 @@ lpfc_ramp_up_queue_handler(struct lpfc_hba *phba)
                                                         sdev->queue_depth+1);
                         }
                 }
-        lpfc_destroy_vport_work_array(vports);
+        lpfc_destroy_vport_work_array(phba, vports);
         atomic_set(&phba->num_rsrc_err, 0);
         atomic_set(&phba->num_cmd_success, 0);
 }
@@ -380,7 +380,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
                 (num_bde * sizeof (struct ulp_bde64));
         iocb_cmd->ulpBdeCount = 1;
         iocb_cmd->ulpLe = 1;
-        fcp_cmnd->fcpDl = be32_to_cpu(scsi_bufflen(scsi_cmnd));
+        fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
         return 0;
 }
 
@@ -542,6 +542,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
         int result;
         struct scsi_device *sdev, *tmp_sdev;
         int depth = 0;
+        unsigned long flags;
 
         lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4];
         lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
@@ -608,6 +609,15 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
         cmd->scsi_done(cmd);
 
         if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
+                /*
+                 * If there is a thread waiting for command completion
+                 * wake up the thread.
+                 */
+                spin_lock_irqsave(sdev->host->host_lock, flags);
+                lpfc_cmd->pCmd = NULL;
+                if (lpfc_cmd->waitq)
+                        wake_up(lpfc_cmd->waitq);
+                spin_unlock_irqrestore(sdev->host->host_lock, flags);
                 lpfc_release_scsi_buf(phba, lpfc_cmd);
                 return;
         }
@@ -669,6 +679,16 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
                 }
         }
 
+        /*
+         * If there is a thread waiting for command completion
+         * wake up the thread.
+         */
+        spin_lock_irqsave(sdev->host->host_lock, flags);
+        lpfc_cmd->pCmd = NULL;
+        if (lpfc_cmd->waitq)
+                wake_up(lpfc_cmd->waitq);
+        spin_unlock_irqrestore(sdev->host->host_lock, flags);
+
         lpfc_release_scsi_buf(phba, lpfc_cmd);
 }
 
@@ -743,6 +763,8 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
         piocbq->iocb.ulpContext = pnode->nlp_rpi;
         if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
                 piocbq->iocb.ulpFCP2Rcvy = 1;
+        else
+                piocbq->iocb.ulpFCP2Rcvy = 0;
 
         piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
         piocbq->context1  = lpfc_cmd;
@@ -1018,8 +1040,8 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd)
         struct lpfc_iocbq *abtsiocb;
         struct lpfc_scsi_buf *lpfc_cmd;
         IOCB_t *cmd, *icmd;
-        unsigned int loop_count = 0;
         int ret = SUCCESS;
+        DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
 
         lpfc_block_error_handler(cmnd);
         lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
@@ -1074,17 +1096,15 @@ lpfc_abort_handler(struct scsi_cmnd *cmnd)
         if (phba->cfg_poll & DISABLE_FCP_RING_INT)
                 lpfc_sli_poll_fcp_ring (phba);
 
+        lpfc_cmd->waitq = &waitq;
         /* Wait for abort to complete */
-        while (lpfc_cmd->pCmd == cmnd)
-        {
-                if (phba->cfg_poll & DISABLE_FCP_RING_INT)
-                        lpfc_sli_poll_fcp_ring (phba);
+        wait_event_timeout(waitq,
+                          (lpfc_cmd->pCmd != cmnd),
+                           (2*vport->cfg_devloss_tmo*HZ));
 
-                schedule_timeout_uninterruptible(LPFC_ABORT_WAIT * HZ);
-                if (++loop_count
-                    > (2 * vport->cfg_devloss_tmo)/LPFC_ABORT_WAIT)
-                        break;
-        }
+        spin_lock_irq(shost->host_lock);
+        lpfc_cmd->waitq = NULL;
+        spin_unlock_irq(shost->host_lock);
 
         if (lpfc_cmd->pCmd == cmnd) {
                 ret = FAILED;
@@ -1438,7 +1458,7 @@ struct scsi_host_template lpfc_template = {
         .slave_destroy          = lpfc_slave_destroy,
         .scan_finished          = lpfc_scan_finished,
         .this_id                = -1,
-        .sg_tablesize           = LPFC_SG_SEG_CNT,
+        .sg_tablesize           = LPFC_DEFAULT_SG_SEG_CNT,
         .use_sg_chaining        = ENABLE_SG_CHAINING,
         .cmd_per_lun            = LPFC_CMD_PER_LUN,
         .use_clustering         = ENABLE_CLUSTERING,
@@ -1459,7 +1479,7 @@ struct scsi_host_template lpfc_vport_template = {
         .slave_destroy          = lpfc_slave_destroy,
         .scan_finished          = lpfc_scan_finished,
         .this_id                = -1,
-        .sg_tablesize           = LPFC_SG_SEG_CNT,
+        .sg_tablesize           = LPFC_DEFAULT_SG_SEG_CNT,
         .cmd_per_lun            = LPFC_CMD_PER_LUN,
         .use_clustering         = ENABLE_CLUSTERING,
         .use_sg_chaining        = ENABLE_SG_CHAINING,
diff --git a/drivers/scsi/lpfc/lpfc_scsi.h b/drivers/scsi/lpfc/lpfc_scsi.h
index 31787bb6d53e..daba92374985 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.h
+++ b/drivers/scsi/lpfc/lpfc_scsi.h
@@ -138,6 +138,7 @@ struct lpfc_scsi_buf {
          * Iotag is in here
          */
         struct lpfc_iocbq cur_iocbq;
+        wait_queue_head_t *waitq;
 };
 
 #define LPFC_SCSI_DMA_EXT_SIZE 264
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index ce348c5c706c..fdd01e384e36 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -106,7 +106,7 @@ lpfc_sli_get_iocbq(struct lpfc_hba *phba)
         return iocbq;
 }
 
-void
+static void
 __lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
         size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
@@ -199,6 +199,7 @@ lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
         case CMD_RCV_ELS_REQ_CX:
         case CMD_RCV_SEQUENCE64_CX:
         case CMD_RCV_ELS_REQ64_CX:
+        case CMD_ASYNC_STATUS:
         case CMD_IOCB_RCV_SEQ64_CX:
         case CMD_IOCB_RCV_ELS64_CX:
         case CMD_IOCB_RCV_CONT64_CX:
@@ -473,8 +474,7 @@ lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
         if (pring->txq_cnt &&
             lpfc_is_link_up(phba) &&
             (pring->ringno != phba->sli.fcp_ring ||
-             phba->sli.sli_flag & LPFC_PROCESS_LA) &&
-            !(pring->flag & LPFC_STOP_IOCB_MBX)) {
+             phba->sli.sli_flag & LPFC_PROCESS_LA)) {
 
                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
@@ -489,32 +489,7 @@ lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
         return;
 }
 
-/* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
-static void
-lpfc_sli_turn_on_ring(struct lpfc_hba *phba, int ringno)
-{
-        struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
-                &phba->slim2p->mbx.us.s3_pgp.port[ringno] :
-                &phba->slim2p->mbx.us.s2.port[ringno];
-        unsigned long iflags;
-
-        /* If the ring is active, flag it */
-        spin_lock_irqsave(&phba->hbalock, iflags);
-        if (phba->sli.ring[ringno].cmdringaddr) {
-                if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
-                        phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
-                        /*
-                         * Force update of the local copy of cmdGetInx
-                         */
-                        phba->sli.ring[ringno].local_getidx
-                                = le32_to_cpu(pgp->cmdGetInx);
-                        lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
-                }
-        }
-        spin_unlock_irqrestore(&phba->hbalock, iflags);
-}
-
-struct lpfc_hbq_entry *
+static struct lpfc_hbq_entry *
 lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
 {
         struct hbq_s *hbqp = &phba->hbqs[hbqno];
@@ -565,6 +540,7 @@ lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
                         list_del(&hbq_buf->dbuf.list);
                         (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
                 }
+                phba->hbqs[i].buffer_count = 0;
         }
 }
 
@@ -633,8 +609,8 @@ lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
                 return 0;
         }
 
-        start = lpfc_hbq_defs[hbqno]->buffer_count;
-        end = count + lpfc_hbq_defs[hbqno]->buffer_count;
+        start = phba->hbqs[hbqno].buffer_count;
+        end = count + start;
         if (end > lpfc_hbq_defs[hbqno]->entry_count) {
                 end = lpfc_hbq_defs[hbqno]->entry_count;
         }
@@ -646,7 +622,7 @@ lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
                         return 1;
                 hbq_buffer->tag = (i | (hbqno << 16));
                 if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
-                        lpfc_hbq_defs[hbqno]->buffer_count++;
+                        phba->hbqs[hbqno].buffer_count++;
                 else
                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
         }
@@ -660,14 +636,14 @@ lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
                                          lpfc_hbq_defs[qno]->add_count));
 }
 
-int
+static int
 lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
 {
         return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
                                          lpfc_hbq_defs[qno]->init_count));
 }
 
-struct hbq_dmabuf *
+static struct hbq_dmabuf *
 lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
 {
         struct lpfc_dmabuf *d_buf;
@@ -686,7 +662,7 @@ lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
         }
         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
                         "1803 Bad hbq tag. Data: x%x x%x\n",
-                        tag, lpfc_hbq_defs[tag >> 16]->buffer_count);
+                        tag, phba->hbqs[tag >> 16].buffer_count);
         return NULL;
 }
 
@@ -712,6 +688,7 @@ lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
         case MBX_LOAD_SM:
         case MBX_READ_NV:
         case MBX_WRITE_NV:
+        case MBX_WRITE_VPARMS:
         case MBX_RUN_BIU_DIAG:
         case MBX_INIT_LINK:
         case MBX_DOWN_LINK:
@@ -739,7 +716,7 @@ lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
         case MBX_DEL_LD_ENTRY:
         case MBX_RUN_PROGRAM:
         case MBX_SET_MASK:
-        case MBX_SET_SLIM:
+        case MBX_SET_VARIABLE:
         case MBX_UNREG_D_ID:
         case MBX_KILL_BOARD:
         case MBX_CONFIG_FARP:
@@ -751,9 +728,10 @@ lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
         case MBX_READ_RPI64:
         case MBX_REG_LOGIN64:
         case MBX_READ_LA64:
-        case MBX_FLASH_WR_ULA:
+        case MBX_WRITE_WWN:
         case MBX_SET_DEBUG:
         case MBX_LOAD_EXP_ROM:
+        case MBX_ASYNCEVT_ENABLE:
         case MBX_REG_VPI:
         case MBX_UNREG_VPI:
         case MBX_HEARTBEAT:
@@ -953,6 +931,17 @@ lpfc_sli_replace_hbqbuff(struct lpfc_hba *phba, uint32_t tag)
         return &new_hbq_entry->dbuf;
 }
 
+static struct lpfc_dmabuf *
+lpfc_sli_get_buff(struct lpfc_hba *phba,
+                        struct lpfc_sli_ring *pring,
+                        uint32_t tag)
+{
+        if (tag & QUE_BUFTAG_BIT)
+                return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
+        else
+                return lpfc_sli_replace_hbqbuff(phba, tag);
+}
+
 static int
 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                             struct lpfc_iocbq *saveq)
@@ -961,19 +950,112 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         WORD5            * w5p;
         uint32_t           Rctl, Type;
         uint32_t           match, i;
+        struct lpfc_iocbq *iocbq;
 
         match = 0;
         irsp = &(saveq->iocb);
-        if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
-            || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)
-            || (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)
-            || (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX)) {
+
+        if (irsp->ulpStatus == IOSTAT_NEED_BUFFER)
+                return 1;
+        if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
+                if (pring->lpfc_sli_rcv_async_status)
+                        pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
+                else
+                        lpfc_printf_log(phba,
+                                        KERN_WARNING,
+                                        LOG_SLI,
+                                        "0316 Ring %d handler: unexpected "
+                                        "ASYNC_STATUS iocb received evt_code "
+                                        "0x%x\n",
+                                        pring->ringno,
+                                        irsp->un.asyncstat.evt_code);
+                return 1;
+        }
+
+        if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
+                if (irsp->ulpBdeCount != 0) {
+                        saveq->context2 = lpfc_sli_get_buff(phba, pring,
+                                                irsp->un.ulpWord[3]);
+                        if (!saveq->context2)
+                                lpfc_printf_log(phba,
+                                        KERN_ERR,
+                                        LOG_SLI,
+                                        "0341 Ring %d Cannot find buffer for "
+                                        "an unsolicited iocb. tag 0x%x\n",
+                                        pring->ringno,
+                                        irsp->un.ulpWord[3]);
+                }
+                if (irsp->ulpBdeCount == 2) {
+                        saveq->context3 = lpfc_sli_get_buff(phba, pring,
+                                                irsp->unsli3.sli3Words[7]);
+                        if (!saveq->context3)
+                                lpfc_printf_log(phba,
+                                        KERN_ERR,
+                                        LOG_SLI,
+                                        "0342 Ring %d Cannot find buffer for an"
+                                        " unsolicited iocb. tag 0x%x\n",
+                                        pring->ringno,
+                                        irsp->unsli3.sli3Words[7]);
+                }
+                list_for_each_entry(iocbq, &saveq->list, list) {
+                        irsp = &(iocbq->iocb);
+                        if (irsp->ulpBdeCount != 0) {
+                                iocbq->context2 = lpfc_sli_get_buff(phba, pring,
+                                                        irsp->un.ulpWord[3]);
+                                if (!iocbq->context2)
+                                        lpfc_printf_log(phba,
+                                                KERN_ERR,
+                                                LOG_SLI,
+                                                "0343 Ring %d Cannot find "
+                                                "buffer for an unsolicited iocb"
+                                                ". tag 0x%x\n", pring->ringno,
+                                                irsp->un.ulpWord[3]);
+                        }
+                        if (irsp->ulpBdeCount == 2) {
+                                iocbq->context3 = lpfc_sli_get_buff(phba, pring,
+                                                irsp->unsli3.sli3Words[7]);
+                                if (!iocbq->context3)
+                                        lpfc_printf_log(phba,
+                                                KERN_ERR,
+                                                LOG_SLI,
+                                                "0344 Ring %d Cannot find "
+                                                "buffer for an unsolicited "
+                                                "iocb. tag 0x%x\n",
+                                                pring->ringno,
+                                                irsp->unsli3.sli3Words[7]);
+                        }
+                }
+        }
+        if (irsp->ulpBdeCount != 0 &&
+            (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX ||
+             irsp->ulpStatus == IOSTAT_INTERMED_RSP)) {
+                int found = 0;
+
+                /* search continue save q for same XRI */
+                list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) {
+                        if (iocbq->iocb.ulpContext == saveq->iocb.ulpContext) {
+                                list_add_tail(&saveq->list, &iocbq->list);
+                                found = 1;
+                                break;
+                        }
+                }
+                if (!found)
+                        list_add_tail(&saveq->clist,
+                                      &pring->iocb_continue_saveq);
+                if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) {
+                        list_del_init(&iocbq->clist);
+                        saveq = iocbq;
+                        irsp = &(saveq->iocb);
+                } else
+                        return 0;
+        }
+        if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) ||
+            (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) ||
+            (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) {
                 Rctl = FC_ELS_REQ;
                 Type = FC_ELS_DATA;
         } else {
-                w5p =
-                    (WORD5 *) & (saveq->iocb.un.
-                                 ulpWord[5]);
+                w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]);
                 Rctl = w5p->hcsw.Rctl;
                 Type = w5p->hcsw.Type;
 
@@ -988,15 +1070,6 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 }
         }
 
-        if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
-                if (irsp->ulpBdeCount != 0)
-                        saveq->context2 = lpfc_sli_replace_hbqbuff(phba,
-                                                irsp->un.ulpWord[3]);
-                if (irsp->ulpBdeCount == 2)
-                        saveq->context3 = lpfc_sli_replace_hbqbuff(phba,
-                                                irsp->unsli3.sli3Words[7]);
-        }
-
         /* unSolicited Responses */
         if (pring->prt[0].profile) {
                 if (pring->prt[0].lpfc_sli_rcv_unsol_event)
@@ -1006,12 +1079,9 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         } else {
                 /* We must search, based on rctl / type
                    for the right routine */
-                for (i = 0; i < pring->num_mask;
-                     i++) {
-                        if ((pring->prt[i].rctl ==
-                             Rctl)
-                            && (pring->prt[i].
-                                type == Type)) {
+                for (i = 0; i < pring->num_mask; i++) {
+                        if ((pring->prt[i].rctl == Rctl)
+                            && (pring->prt[i].type == Type)) {
                                 if (pring->prt[i].lpfc_sli_rcv_unsol_event)
                                         (pring->prt[i].lpfc_sli_rcv_unsol_event)
                                                         (phba, pring, saveq);
@@ -1084,6 +1154,12 @@ lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                                                 IOSTAT_LOCAL_REJECT;
                                         saveq->iocb.un.ulpWord[4] =
                                                 IOERR_SLI_ABORTED;
+
+                                        /* Firmware could still be in progress
+                                         * of DMAing payload, so don't free data
+                                         * buffer till after a hbeat.
+                                         */
+                                        saveq->iocb_flag |= LPFC_DELAY_MEM_FREE;
                                 }
                         }
                         (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
@@ -1572,12 +1648,7 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
 
                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
 
-                if (list_empty(&(pring->iocb_continueq))) {
-                        list_add(&rspiocbp->list, &(pring->iocb_continueq));
-                } else {
-                        list_add_tail(&rspiocbp->list,
-                                      &(pring->iocb_continueq));
-                }
+                list_add_tail(&rspiocbp->list, &(pring->iocb_continueq));
 
                 pring->iocb_continueq_cnt++;
                 if (irsp->ulpLe) {
@@ -1642,17 +1713,17 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
                         if (type == LPFC_SOL_IOCB) {
-                                spin_unlock_irqrestore(&phba->hbalock,
-                                                       iflag);
+                                spin_unlock_irqrestore(&phba->hbalock, iflag);
                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
                                                                saveq);
                                 spin_lock_irqsave(&phba->hbalock, iflag);
                         } else if (type == LPFC_UNSOL_IOCB) {
-                                spin_unlock_irqrestore(&phba->hbalock,
-                                                       iflag);
+                                spin_unlock_irqrestore(&phba->hbalock, iflag);
                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
                                                                  saveq);
                                 spin_lock_irqsave(&phba->hbalock, iflag);
+                                if (!rc)
+                                        free_saveq = 0;
                         } else if (type == LPFC_ABORT_IOCB) {
                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
                                     ((cmdiocbp =
@@ -1921,8 +1992,8 @@ lpfc_sli_brdkill(struct lpfc_hba *phba)
                         "0329 Kill HBA Data: x%x x%x\n",
                         phba->pport->port_state, psli->sli_flag);
 
-        if ((pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
-                                                  GFP_KERNEL)) == 0)
+        pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!pmb)
                 return 1;
 
         /* Disable the error attention */
@@ -2113,7 +2184,10 @@ lpfc_sli_chipset_init(struct lpfc_hba *phba)
                            <status> */
                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                         "0436 Adapter failed to init, "
-                                        "timeout, status reg x%x\n", status);
+                                        "timeout, status reg x%x, "
+                                        "FW Data: A8 x%x AC x%x\n", status,
+                                        readl(phba->MBslimaddr + 0xa8),
+                                        readl(phba->MBslimaddr + 0xac));
                         phba->link_state = LPFC_HBA_ERROR;
                         return -ETIMEDOUT;
                 }
@@ -2125,7 +2199,10 @@ lpfc_sli_chipset_init(struct lpfc_hba *phba)
                            <status> */
                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                         "0437 Adapter failed to init, "
-                                        "chipset, status reg x%x\n", status);
+                                        "chipset, status reg x%x, "
+                                        "FW Data: A8 x%x AC x%x\n", status,
+                                        readl(phba->MBslimaddr + 0xa8),
+                                        readl(phba->MBslimaddr + 0xac));
                         phba->link_state = LPFC_HBA_ERROR;
                         return -EIO;
                 }
@@ -2153,7 +2230,10 @@ lpfc_sli_chipset_init(struct lpfc_hba *phba)
                 /* Adapter failed to init, chipset, status reg <status> */
                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                 "0438 Adapter failed to init, chipset, "
-                                "status reg x%x\n", status);
+                                "status reg x%x, "
+                                "FW Data: A8 x%x AC x%x\n", status,
+                                readl(phba->MBslimaddr + 0xa8),
+                                readl(phba->MBslimaddr + 0xac));
                 phba->link_state = LPFC_HBA_ERROR;
                 return -EIO;
         }
@@ -2485,11 +2565,16 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
         lpfc_sli_abort_iocb_ring(phba, pring);
 
         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
-                        "0316 Resetting board due to mailbox timeout\n");
+                        "0345 Resetting board due to mailbox timeout\n");
         /*
          * lpfc_offline calls lpfc_sli_hba_down which will clean up
          * on oustanding mailbox commands.
          */
+        /* If resets are disabled then set error state and return. */
+        if (!phba->cfg_enable_hba_reset) {
+                phba->link_state = LPFC_HBA_ERROR;
+                return;
+        }
         lpfc_offline_prep(phba);
         lpfc_offline(phba);
         lpfc_sli_brdrestart(phba);
@@ -2507,6 +2592,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
         uint32_t status, evtctr;
         uint32_t ha_copy;
         int i;
+        unsigned long timeout;
         unsigned long drvr_flag = 0;
         volatile uint32_t word0, ldata;
         void __iomem *to_slim;
@@ -2519,7 +2605,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                                         "1806 Mbox x%x failed. No vport\n",
                                         pmbox->mb.mbxCommand);
                         dump_stack();
-                        return MBXERR_ERROR;
+                        return MBX_NOT_FINISHED;
                 }
         }
 
@@ -2571,21 +2657,6 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                         return MBX_NOT_FINISHED;
                 }
 
-                /* Handle STOP IOCB processing flag. This is only meaningful
-                 * if we are not polling for mbox completion.
-                 */
-                if (flag & MBX_STOP_IOCB) {
-                        flag &= ~MBX_STOP_IOCB;
-                        /* Now flag each ring */
-                        for (i = 0; i < psli->num_rings; i++) {
-                                /* If the ring is active, flag it */
-                                if (psli->ring[i].cmdringaddr) {
-                                        psli->ring[i].flag |=
-                                            LPFC_STOP_IOCB_MBX;
-                                }
-                        }
-                }
-
                 /* Another mailbox command is still being processed, queue this
                  * command to be processed later.
                  */
@@ -2620,23 +2691,6 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                 return MBX_BUSY;
         }
 
-        /* Handle STOP IOCB processing flag. This is only meaningful
-         * if we are not polling for mbox completion.
-         */
-        if (flag & MBX_STOP_IOCB) {
-                flag &= ~MBX_STOP_IOCB;
-                if (flag == MBX_NOWAIT) {
-                        /* Now flag each ring */
-                        for (i = 0; i < psli->num_rings; i++) {
-                                /* If the ring is active, flag it */
-                                if (psli->ring[i].cmdringaddr) {
-                                        psli->ring[i].flag |=
-                                            LPFC_STOP_IOCB_MBX;
-                                }
-                        }
-                }
-        }
-
         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
 
         /* If we are not polling, we MUST be in SLI2 mode */
@@ -2714,18 +2768,24 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
         }
 
         wmb();
-        /* interrupt board to doit right away */
-        writel(CA_MBATT, phba->CAregaddr);
-        readl(phba->CAregaddr); /* flush */
 
         switch (flag) {
         case MBX_NOWAIT:
-                /* Don't wait for it to finish, just return */
+                /* Set up reference to mailbox command */
                 psli->mbox_active = pmbox;
+                /* Interrupt board to do it */
+                writel(CA_MBATT, phba->CAregaddr);
+                readl(phba->CAregaddr); /* flush */
+                /* Don't wait for it to finish, just return */
                 break;
 
         case MBX_POLL:
+                /* Set up null reference to mailbox command */
                 psli->mbox_active = NULL;
+                /* Interrupt board to do it */
+                writel(CA_MBATT, phba->CAregaddr);
+                readl(phba->CAregaddr); /* flush */
+
                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
                         /* First read mbox status word */
                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
@@ -2737,15 +2797,15 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
 
                 /* Read the HBA Host Attention Register */
                 ha_copy = readl(phba->HAregaddr);
-
-                i = lpfc_mbox_tmo_val(phba, mb->mbxCommand);
-                i *= 1000; /* Convert to ms */
-
+                timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
+                                                             mb->mbxCommand) *
+                                           1000) + jiffies;
+                i = 0;
                 /* Wait for command to complete */
                 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
                        (!(ha_copy & HA_MBATT) &&
                         (phba->link_state > LPFC_WARM_START))) {
-                        if (i-- <= 0) {
+                        if (time_after(jiffies, timeout)) {
                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
                                 spin_unlock_irqrestore(&phba->hbalock,
                                                        drvr_flag);
@@ -2758,12 +2818,12 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                             && (evtctr != psli->slistat.mbox_event))
                                 break;
 
-                        spin_unlock_irqrestore(&phba->hbalock,
-                                               drvr_flag);
-
-                        msleep(1);
-
-                        spin_lock_irqsave(&phba->hbalock, drvr_flag);
+                        if (i++ > 10) {
+                                spin_unlock_irqrestore(&phba->hbalock,
+                                                       drvr_flag);
+                                msleep(1);
+                                spin_lock_irqsave(&phba->hbalock, drvr_flag);
+                        }
 
                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
                                 /* First copy command data */
@@ -2848,7 +2908,7 @@ lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 /*
  * Lockless version of lpfc_sli_issue_iocb.
  */
-int
+static int
 __lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                     struct lpfc_iocbq *piocb, uint32_t flag)
 {
@@ -2879,9 +2939,9 @@ __lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 
         /*
          * Check to see if we are blocking IOCB processing because of a
-         * outstanding mbox command.
+         * outstanding event.
          */
-        if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
+        if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
                 goto iocb_busy;
 
         if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
@@ -2993,6 +3053,61 @@ lpfc_extra_ring_setup( struct lpfc_hba *phba)
         return 0;
 }
 
+static void
+lpfc_sli_async_event_handler(struct lpfc_hba * phba,
+        struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
+{
+        IOCB_t *icmd;
+        uint16_t evt_code;
+        uint16_t temp;
+        struct temp_event temp_event_data;
+        struct Scsi_Host *shost;
+
+        icmd = &iocbq->iocb;
+        evt_code = icmd->un.asyncstat.evt_code;
+        temp = icmd->ulpContext;
+
+        if ((evt_code != ASYNC_TEMP_WARN) &&
+                (evt_code != ASYNC_TEMP_SAFE)) {
+                lpfc_printf_log(phba,
+                        KERN_ERR,
+                        LOG_SLI,
+                        "0346 Ring %d handler: unexpected ASYNC_STATUS"
+                        " evt_code 0x%x\n",
+                        pring->ringno,
+                        icmd->un.asyncstat.evt_code);
+                return;
+        }
+        temp_event_data.data = (uint32_t)temp;
+        temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
+        if (evt_code == ASYNC_TEMP_WARN) {
+                temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
+                lpfc_printf_log(phba,
+                                KERN_ERR,
+                                LOG_TEMP,
+                                "0347 Adapter is very hot, please take "
+                                "corrective action. temperature : %d Celsius\n",
+                                temp);
+        }
+        if (evt_code == ASYNC_TEMP_SAFE) {
+                temp_event_data.event_code = LPFC_NORMAL_TEMP;
+                lpfc_printf_log(phba,
+                                KERN_ERR,
+                                LOG_TEMP,
+                                "0340 Adapter temperature is OK now. "
+                                "temperature : %d Celsius\n",
+                                temp);
+        }
+
+        /* Send temperature change event to applications */
+        shost = lpfc_shost_from_vport(phba->pport);
+        fc_host_post_vendor_event(shost, fc_get_event_number(),
+                sizeof(temp_event_data), (char *) &temp_event_data,
+                SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
+
+}
+
+
 int
 lpfc_sli_setup(struct lpfc_hba *phba)
 {
@@ -3059,6 +3174,8 @@ lpfc_sli_setup(struct lpfc_hba *phba)
                         pring->fast_iotag = 0;
                         pring->iotag_ctr = 0;
                         pring->iotag_max = 4096;
+                        pring->lpfc_sli_rcv_async_status =
+                                lpfc_sli_async_event_handler;
                         pring->num_mask = 4;
                         pring->prt[0].profile = 0;      /* Mask 0 */
                         pring->prt[0].rctl = FC_ELS_REQ;
@@ -3123,6 +3240,7 @@ lpfc_sli_queue_setup(struct lpfc_hba *phba)
                 INIT_LIST_HEAD(&pring->txq);
                 INIT_LIST_HEAD(&pring->txcmplq);
                 INIT_LIST_HEAD(&pring->iocb_continueq);
+                INIT_LIST_HEAD(&pring->iocb_continue_saveq);
                 INIT_LIST_HEAD(&pring->postbufq);
         }
         spin_unlock_irq(&phba->hbalock);
@@ -3193,6 +3311,7 @@ lpfc_sli_hba_down(struct lpfc_hba *phba)
         LIST_HEAD(completions);
         struct lpfc_sli *psli = &phba->sli;
         struct lpfc_sli_ring *pring;
+        struct lpfc_dmabuf *buf_ptr;
         LPFC_MBOXQ_t *pmb;
         struct lpfc_iocbq *iocb;
         IOCB_t *cmd = NULL;
@@ -3232,6 +3351,19 @@ lpfc_sli_hba_down(struct lpfc_hba *phba)
                 }
         }
 
+        spin_lock_irqsave(&phba->hbalock, flags);
+        list_splice_init(&phba->elsbuf, &completions);
+        phba->elsbuf_cnt = 0;
+        phba->elsbuf_prev_cnt = 0;
+        spin_unlock_irqrestore(&phba->hbalock, flags);
+
+        while (!list_empty(&completions)) {
+                list_remove_head(&completions, buf_ptr,
+                        struct lpfc_dmabuf, list);
+                lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
+                kfree(buf_ptr);
+        }
+
         /* Return any active mbox cmds */
         del_timer_sync(&psli->mbox_tmo);
         spin_lock_irqsave(&phba->hbalock, flags);
@@ -3294,6 +3426,47 @@ lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         return 0;
 }
 
+uint32_t
+lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
+{
+        spin_lock_irq(&phba->hbalock);
+        phba->buffer_tag_count++;
+        /*
+         * Always set the QUE_BUFTAG_BIT to distiguish between
+         * a tag assigned by HBQ.
+         */
+        phba->buffer_tag_count |= QUE_BUFTAG_BIT;
+        spin_unlock_irq(&phba->hbalock);
+        return phba->buffer_tag_count;
+}
+
+struct lpfc_dmabuf *
+lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+                        uint32_t tag)
+{
+        struct lpfc_dmabuf *mp, *next_mp;
+        struct list_head *slp = &pring->postbufq;
+
+        /* Search postbufq, from the begining, looking for a match on tag */
+        spin_lock_irq(&phba->hbalock);
+        list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
+                if (mp->buffer_tag == tag) {
+                        list_del_init(&mp->list);
+                        pring->postbufq_cnt--;
+                        spin_unlock_irq(&phba->hbalock);
+                        return mp;
+                }
+        }
+
+        spin_unlock_irq(&phba->hbalock);
+        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                        "0410 Cannot find virtual addr for buffer tag on "
+                        "ring %d Data x%lx x%p x%p x%x\n",
+                        pring->ringno, (unsigned long) tag,
+                        slp->next, slp->prev, pring->postbufq_cnt);
+
+        return NULL;
+}
 
 struct lpfc_dmabuf *
 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
@@ -3361,6 +3534,12 @@ lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                         pring->txcmplq_cnt--;
                         spin_unlock_irq(&phba->hbalock);
 
+                        /* Firmware could still be in progress of DMAing
+                         * payload, so don't free data buffer till after
+                         * a hbeat.
+                         */
+                        abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE;
+
                         abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
                         abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
                         abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
@@ -3699,7 +3878,7 @@ lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
         unsigned long flag;
 
         /* The caller must leave context1 empty. */
-        if (pmboxq->context1 != 0)
+        if (pmboxq->context1)
                 return MBX_NOT_FINISHED;
 
         /* setup wake call as IOCB callback */
@@ -3771,7 +3950,6 @@ lpfc_intr_handler(int irq, void *dev_id)
         uint32_t ha_copy;
         uint32_t work_ha_copy;
         unsigned long status;
-        int i;
         uint32_t control;
 
         MAILBOX_t *mbox, *pmbox;
@@ -3888,7 +4066,6 @@ lpfc_intr_handler(int irq, void *dev_id)
                 }
 
                 if (work_ha_copy & HA_ERATT) {
-                        phba->link_state = LPFC_HBA_ERROR;
                         /*
                          * There was a link/board error.  Read the
                          * status register to retrieve the error event
@@ -3920,7 +4097,7 @@ lpfc_intr_handler(int irq, void *dev_id)
                                  * Stray Mailbox Interrupt, mbxCommand <cmd>
                                  * mbxStatus <status>
                                  */
-                                lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX |
+                                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
                                                 LOG_SLI,
                                                 "(%d):0304 Stray Mailbox "
                                                 "Interrupt mbxCommand x%x "
@@ -3928,51 +4105,60 @@ lpfc_intr_handler(int irq, void *dev_id)
                                                 (vport ? vport->vpi : 0),
                                                 pmbox->mbxCommand,
                                                 pmbox->mbxStatus);
-                        }
-                        phba->last_completion_time = jiffies;
-                        del_timer_sync(&phba->sli.mbox_tmo);
-
-                        phba->sli.mbox_active = NULL;
-                        if (pmb->mbox_cmpl) {
-                                lpfc_sli_pcimem_bcopy(mbox, pmbox,
-                                                      MAILBOX_CMD_SIZE);
-                        }
-                        if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
-                                pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
+                                /* clear mailbox attention bit */
+                                work_ha_copy &= ~HA_MBATT;
+                        } else {
+                                phba->last_completion_time = jiffies;
+                                del_timer(&phba->sli.mbox_tmo);
 
-                                lpfc_debugfs_disc_trc(vport,
-                                        LPFC_DISC_TRC_MBOX_VPORT,
-                                        "MBOX dflt rpi: : status:x%x rpi:x%x",
-                                        (uint32_t)pmbox->mbxStatus,
-                                        pmbox->un.varWords[0], 0);
-
-                                if ( !pmbox->mbxStatus) {
-                                        mp = (struct lpfc_dmabuf *)
-                                                (pmb->context1);
-                                        ndlp = (struct lpfc_nodelist *)
-                                                pmb->context2;
-
-                                        /* Reg_LOGIN of dflt RPI was successful.
-                                         * new lets get rid of the RPI using the
-                                         * same mbox buffer.
-                                         */
-                                        lpfc_unreg_login(phba, vport->vpi,
-                                                pmbox->un.varWords[0], pmb);
-                                        pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
-                                        pmb->context1 = mp;
-                                        pmb->context2 = ndlp;
-                                        pmb->vport = vport;
-                                        spin_lock(&phba->hbalock);
-                                        phba->sli.sli_flag &=
-                                                ~LPFC_SLI_MBOX_ACTIVE;
-                                        spin_unlock(&phba->hbalock);
-                                        goto send_current_mbox;
+                                phba->sli.mbox_active = NULL;
+                                if (pmb->mbox_cmpl) {
+                                        lpfc_sli_pcimem_bcopy(mbox, pmbox,
+                                                        MAILBOX_CMD_SIZE);
+                                }
+                                if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
+                                        pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
+
+                                        lpfc_debugfs_disc_trc(vport,
+                                                LPFC_DISC_TRC_MBOX_VPORT,
+                                                "MBOX dflt rpi: : "
+                                                "status:x%x rpi:x%x",
+                                                (uint32_t)pmbox->mbxStatus,
+                                                pmbox->un.varWords[0], 0);
+
+                                        if (!pmbox->mbxStatus) {
+                                                mp = (struct lpfc_dmabuf *)
+                                                        (pmb->context1);
+                                                ndlp = (struct lpfc_nodelist *)
+                                                        pmb->context2;
+
+                                                /* Reg_LOGIN of dflt RPI was
+                                                 * successful. new lets get
+                                                 * rid of the RPI using the
+                                                 * same mbox buffer.
+                                                 */
+                                                lpfc_unreg_login(phba,
+                                                        vport->vpi,
+                                                        pmbox->un.varWords[0],
+                                                        pmb);
+                                                pmb->mbox_cmpl =
+                                                        lpfc_mbx_cmpl_dflt_rpi;
+                                                pmb->context1 = mp;
+                                                pmb->context2 = ndlp;
+                                                pmb->vport = vport;
+                                                spin_lock(&phba->hbalock);
+                                                phba->sli.sli_flag &=
+                                                        ~LPFC_SLI_MBOX_ACTIVE;
+                                                spin_unlock(&phba->hbalock);
+                                                goto send_current_mbox;
+                                        }
                                 }
+                                spin_lock(&phba->pport->work_port_lock);
+                                phba->pport->work_port_events &=
+                                        ~WORKER_MBOX_TMO;
+                                spin_unlock(&phba->pport->work_port_lock);
+                                lpfc_mbox_cmpl_put(phba, pmb);
                         }
-                        spin_lock(&phba->pport->work_port_lock);
-                        phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
-                        spin_unlock(&phba->pport->work_port_lock);
-                        lpfc_mbox_cmpl_put(phba, pmb);
                 }
                 if ((work_ha_copy & HA_MBATT) &&
                     (phba->sli.mbox_active == NULL)) {
@@ -3990,10 +4176,6 @@ send_current_mbox:
                                         lpfc_mbox_cmpl_put(phba, pmb);
                                         goto send_next_mbox;
                                 }
-                        } else {
-                                /* Turn on IOCB processing */
-                                for (i = 0; i < phba->sli.num_rings; i++)
-                                        lpfc_sli_turn_on_ring(phba, i);
                         }
 
                 }
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h
index 51b2b6b949be..7249fd252cbb 100644
--- a/drivers/scsi/lpfc/lpfc_sli.h
+++ b/drivers/scsi/lpfc/lpfc_sli.h
@@ -33,6 +33,7 @@ typedef enum _lpfc_ctx_cmd {
 struct lpfc_iocbq {
         /* lpfc_iocbqs are used in double linked lists */
         struct list_head list;
+        struct list_head clist;
         uint16_t iotag;         /* pre-assigned IO tag */
         uint16_t rsvd1;
 
@@ -44,6 +45,7 @@ struct lpfc_iocbq {
 #define LPFC_IO_FCP             4       /* FCP command -- iocbq in scsi_buf */
 #define LPFC_DRIVER_ABORTED     8       /* driver aborted this request */
 #define LPFC_IO_FABRIC          0x10    /* Iocb send using fabric scheduler */
+#define LPFC_DELAY_MEM_FREE     0x20    /* Defer free'ing of FC data */
 
         uint8_t abort_count;
         uint8_t rsvd2;
@@ -92,8 +94,6 @@ typedef struct lpfcMboxq {
 #define MBX_POLL        1       /* poll mailbox till command done, then
                                    return */
 #define MBX_NOWAIT      2       /* issue command then return immediately */
-#define MBX_STOP_IOCB   4       /* Stop iocb processing till mbox cmds
-                                   complete */
 
 #define LPFC_MAX_RING_MASK  4   /* max num of rctl/type masks allowed per
                                    ring */
@@ -129,9 +129,7 @@ struct lpfc_sli_ring {
         uint16_t flag;          /* ring flags */
 #define LPFC_DEFERRED_RING_EVENT 0x001  /* Deferred processing a ring event */
 #define LPFC_CALL_RING_AVAILABLE 0x002  /* indicates cmd was full */
-#define LPFC_STOP_IOCB_MBX       0x010  /* Stop processing IOCB cmds mbox */
 #define LPFC_STOP_IOCB_EVENT     0x020  /* Stop processing IOCB cmds event */
-#define LPFC_STOP_IOCB_MASK      0x030  /* Stop processing IOCB cmds mask */
         uint16_t abtsiotag;     /* tracks next iotag to use for ABTS */
 
         uint32_t local_getidx;   /* last available cmd index (from cmdGetInx) */
@@ -163,9 +161,12 @@ struct lpfc_sli_ring {
         struct list_head iocb_continueq;
         uint16_t iocb_continueq_cnt;    /* current length of queue */
         uint16_t iocb_continueq_max;    /* max length */
+        struct list_head iocb_continue_saveq;
 
         struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
         uint32_t num_mask;      /* number of mask entries in prt array */
+        void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
+                struct lpfc_sli_ring *, struct lpfc_iocbq *);
 
         struct lpfc_sli_ring_stat stats;        /* SLI statistical info */
 
@@ -199,9 +200,6 @@ struct lpfc_hbq_init {
         uint32_t add_count;     /* number to allocate when starved */
 } ;
 
-#define LPFC_MAX_HBQ 16
-
-
 /* Structure used to hold SLI statistical counters and info */
 struct lpfc_sli_stat {
         uint64_t mbox_stat_err;  /* Mbox cmds completed status error */
diff --git a/drivers/scsi/lpfc/lpfc_version.h b/drivers/scsi/lpfc/lpfc_version.h
index 0081f49286bc..4b633d39a82a 100644
--- a/drivers/scsi/lpfc/lpfc_version.h
+++ b/drivers/scsi/lpfc/lpfc_version.h
@@ -1,7 +1,7 @@
 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
- * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
+ * Copyright (C) 2004-2008 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.emulex.com                                                  *
  *                                                                 *
@@ -18,10 +18,10 @@
  * included with this package.                                     *
  *******************************************************************/
 
-#define LPFC_DRIVER_VERSION "8.2.2"
+#define LPFC_DRIVER_VERSION "8.2.4"
 
 #define LPFC_DRIVER_NAME "lpfc"
 
 #define LPFC_MODULE_DESC "Emulex LightPulse Fibre Channel SCSI driver " \
                 LPFC_DRIVER_VERSION
-#define LPFC_COPYRIGHT "Copyright(c) 2004-2007 Emulex.  All rights reserved."
+#define LPFC_COPYRIGHT "Copyright(c) 2004-2008 Emulex.  All rights reserved."
diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c
index dcb415e717c3..9fad7663c117 100644
--- a/drivers/scsi/lpfc/lpfc_vport.c
+++ b/drivers/scsi/lpfc/lpfc_vport.c
@@ -125,15 +125,26 @@ lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
         pmb->vport = vport;
         rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
         if (rc != MBX_SUCCESS) {
-                lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
-                                 "1818 VPort failed init, mbxCmd x%x "
-                                 "READ_SPARM mbxStatus x%x, rc = x%x\n",
-                                 mb->mbxCommand, mb->mbxStatus, rc);
-                lpfc_mbuf_free(phba, mp->virt, mp->phys);
-                kfree(mp);
-                if (rc != MBX_TIMEOUT)
-                        mempool_free(pmb, phba->mbox_mem_pool);
-                return -EIO;
+                if (signal_pending(current)) {
+                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
+                                         "1830 Signal aborted mbxCmd x%x\n",
+                                         mb->mbxCommand);
+                        lpfc_mbuf_free(phba, mp->virt, mp->phys);
+                        kfree(mp);
+                        if (rc != MBX_TIMEOUT)
+                                mempool_free(pmb, phba->mbox_mem_pool);
+                        return -EINTR;
+                } else {
+                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
+                                         "1818 VPort failed init, mbxCmd x%x "
+                                         "READ_SPARM mbxStatus x%x, rc = x%x\n",
+                                         mb->mbxCommand, mb->mbxStatus, rc);
+                        lpfc_mbuf_free(phba, mp->virt, mp->phys);
+                        kfree(mp);
+                        if (rc != MBX_TIMEOUT)
+                                mempool_free(pmb, phba->mbox_mem_pool);
+                        return -EIO;
+                }
         }
 
         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
@@ -204,6 +215,7 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
         int instance;
         int vpi;
         int rc = VPORT_ERROR;
+        int status;
 
         if ((phba->sli_rev < 3) ||
                 !(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
@@ -248,13 +260,19 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
         vport->vpi = vpi;
         lpfc_debugfs_initialize(vport);
 
-        if (lpfc_vport_sparm(phba, vport)) {
-                lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
-                                 "1813 Create VPORT failed. "
-                                 "Cannot get sparam\n");
+        if ((status = lpfc_vport_sparm(phba, vport))) {
+                if (status == -EINTR) {
+                        lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+                                         "1831 Create VPORT Interrupted.\n");
+                        rc = VPORT_ERROR;
+                } else {
+                        lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+                                         "1813 Create VPORT failed. "
+                                         "Cannot get sparam\n");
+                        rc = VPORT_NORESOURCES;
+                }
                 lpfc_free_vpi(phba, vpi);
                 destroy_port(vport);
-                rc = VPORT_NORESOURCES;
                 goto error_out;
         }
 
@@ -427,7 +445,6 @@ int
 lpfc_vport_delete(struct fc_vport *fc_vport)
 {
         struct lpfc_nodelist *ndlp = NULL;
-        struct lpfc_nodelist *next_ndlp;
         struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost;
         struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
         struct lpfc_hba   *phba = vport->phba;
@@ -482,8 +499,18 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
 
         ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
         if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
-                phba->link_state >= LPFC_LINK_UP) {
-
+            phba->link_state >= LPFC_LINK_UP) {
+                if (vport->cfg_enable_da_id) {
+                        timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
+                        if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
+                                while (vport->ct_flags && timeout)
+                                        timeout = schedule_timeout(timeout);
+                        else
+                                lpfc_printf_log(vport->phba, KERN_WARNING,
+                                                LOG_VPORT,
+                                                "1829 CT command failed to "
+                                                "delete objects on fabric. \n");
+                }
                 /* First look for the Fabric ndlp */
                 ndlp = lpfc_findnode_did(vport, Fabric_DID);
                 if (!ndlp) {
@@ -503,23 +530,20 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
         }
 
 skip_logo:
+        lpfc_cleanup(vport);
         lpfc_sli_host_down(vport);
 
-        list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
-                lpfc_disc_state_machine(vport, ndlp, NULL,
-                                             NLP_EVT_DEVICE_RECOVERY);
-                lpfc_disc_state_machine(vport, ndlp, NULL,
-                                             NLP_EVT_DEVICE_RM);
-        }
-
         lpfc_stop_vport_timers(vport);
         lpfc_unreg_all_rpis(vport);
-        lpfc_unreg_default_rpis(vport);
-        /*
-         * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
-         * scsi_host_put() to release the vport.
-         */
-        lpfc_mbx_unreg_vpi(vport);
+
+        if (!(phba->pport->load_flag & FC_UNLOADING)) {
+                lpfc_unreg_default_rpis(vport);
+                /*
+                 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
+                 * does the scsi_host_put() to release the vport.
+                 */
+                lpfc_mbx_unreg_vpi(vport);
+        }
 
         lpfc_free_vpi(phba, vport->vpi);
         vport->work_port_events = 0;
@@ -532,16 +556,13 @@ skip_logo:
         return VPORT_OK;
 }
 
-EXPORT_SYMBOL(lpfc_vport_create);
-EXPORT_SYMBOL(lpfc_vport_delete);
-
 struct lpfc_vport **
 lpfc_create_vport_work_array(struct lpfc_hba *phba)
 {
         struct lpfc_vport *port_iterator;
         struct lpfc_vport **vports;
         int index = 0;
-        vports = kzalloc(LPFC_MAX_VPORTS * sizeof(struct lpfc_vport *),
+        vports = kzalloc((phba->max_vpi + 1) * sizeof(struct lpfc_vport *),
                          GFP_KERNEL);
         if (vports == NULL)
                 return NULL;
@@ -560,12 +581,12 @@ lpfc_create_vport_work_array(struct lpfc_hba *phba)
 }
 
 void
-lpfc_destroy_vport_work_array(struct lpfc_vport **vports)
+lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
 {
         int i;
         if (vports == NULL)
                 return;
-        for (i=0; vports[i] != NULL && i < LPFC_MAX_VPORTS; i++)
+        for (i=0; vports[i] != NULL && i <= phba->max_vpi; i++)
                 scsi_host_put(lpfc_shost_from_vport(vports[i]));
         kfree(vports);
 }
diff --git a/drivers/scsi/lpfc/lpfc_vport.h b/drivers/scsi/lpfc/lpfc_vport.h
index 91da17751a37..96c445333b69 100644
--- a/drivers/scsi/lpfc/lpfc_vport.h
+++ b/drivers/scsi/lpfc/lpfc_vport.h
@@ -89,7 +89,7 @@ int lpfc_vport_delete(struct fc_vport *);
 int lpfc_vport_getinfo(struct Scsi_Host *, struct vport_info *);
 int lpfc_vport_tgt_remove(struct Scsi_Host *, uint, uint);
 struct lpfc_vport **lpfc_create_vport_work_array(struct lpfc_hba *);
-void lpfc_destroy_vport_work_array(struct lpfc_vport **);
+void lpfc_destroy_vport_work_array(struct lpfc_hba *, struct lpfc_vport **);
 
 /*
  *  queuecommand  VPORT-specific return codes. Specified in  the host byte code.
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 66c652035730..765c24d2bc38 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -4889,7 +4889,7 @@ __megaraid_shutdown(adapter_t *adapter)
                 mdelay(1000);
 }
 
-static void
+static void __devexit
 megaraid_remove_one(struct pci_dev *pdev)
 {
         struct Scsi_Host *host = pci_get_drvdata(pdev);
diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c
index c8923108183a..24e32e446e76 100644
--- a/drivers/scsi/megaraid/megaraid_mbox.c
+++ b/drivers/scsi/megaraid/megaraid_mbox.c
@@ -300,7 +300,7 @@ static struct pci_device_id pci_id_table_g[] =  {
 MODULE_DEVICE_TABLE(pci, pci_id_table_g);
 
 
-static struct pci_driver megaraid_pci_driver_g = {
+static struct pci_driver megaraid_pci_driver = {
         .name           = "megaraid",
         .id_table       = pci_id_table_g,
         .probe          = megaraid_probe_one,
@@ -394,7 +394,7 @@ megaraid_init(void)
 
 
         // register as a PCI hot-plug driver module
-        rval = pci_register_driver(&megaraid_pci_driver_g);
+        rval = pci_register_driver(&megaraid_pci_driver);
         if (rval < 0) {
                 con_log(CL_ANN, (KERN_WARNING
                         "megaraid: could not register hotplug support.\n"));
@@ -415,7 +415,7 @@ megaraid_exit(void)
         con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n"));
 
         // unregister as PCI hotplug driver
-        pci_unregister_driver(&megaraid_pci_driver_g);
+        pci_unregister_driver(&megaraid_pci_driver);
 
         return;
 }
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index e3c5c5282203..d7ec921865c4 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -2,7 +2,7 @@
  *
  *              Linux MegaRAID driver for SAS based RAID controllers
  *
- * Copyright (c) 2003-2005  LSI Logic Corporation.
+ * Copyright (c) 2003-2005  LSI Corporation.
  *
  *         This program is free software; you can redistribute it and/or
  *         modify it under the terms of the GNU General Public License
@@ -10,7 +10,7 @@
  *         2 of the License, or (at your option) any later version.
  *
  * FILE         : megaraid_sas.c
- * Version      : v00.00.03.10-rc5
+ * Version      : v00.00.03.16-rc1
  *
  * Authors:
  *      (email-id : megaraidlinux@lsi.com)
@@ -31,6 +31,7 @@
 #include <linux/moduleparam.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
+#include <linux/mutex.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/uio.h>
@@ -46,10 +47,18 @@
 #include <scsi/scsi_host.h>
 #include "megaraid_sas.h"
 
+/*
+ * poll_mode_io:1- schedule complete completion from q cmd
+ */
+static unsigned int poll_mode_io;
+module_param_named(poll_mode_io, poll_mode_io, int, 0);
+MODULE_PARM_DESC(poll_mode_io,
+        "Complete cmds from IO path, (default=0)");
+
 MODULE_LICENSE("GPL");
 MODULE_VERSION(MEGASAS_VERSION);
 MODULE_AUTHOR("megaraidlinux@lsi.com");
-MODULE_DESCRIPTION("LSI Logic MegaRAID SAS Driver");
+MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
 
 /*
  * PCI ID table for all supported controllers
@@ -76,6 +85,10 @@ static DEFINE_MUTEX(megasas_async_queue_mutex);
 
 static u32 megasas_dbg_lvl;
 
+static void
+megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
+                     u8 alt_status);
+
 /**
  * megasas_get_cmd -    Get a command from the free pool
  * @instance:           Adapter soft state
@@ -855,6 +868,12 @@ megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
         atomic_inc(&instance->fw_outstanding);
 
         instance->instancet->fire_cmd(cmd->frame_phys_addr ,cmd->frame_count-1,instance->reg_set);
+        /*
+         * Check if we have pend cmds to be completed
+         */
+        if (poll_mode_io && atomic_read(&instance->fw_outstanding))
+                tasklet_schedule(&instance->isr_tasklet);
+
 
         return 0;
 
@@ -886,6 +905,64 @@ static int megasas_slave_configure(struct scsi_device *sdev)
 }
 
 /**
+ * megasas_complete_cmd_dpc      -      Returns FW's controller structure
+ * @instance_addr:                      Address of adapter soft state
+ *
+ * Tasklet to complete cmds
+ */
+static void megasas_complete_cmd_dpc(unsigned long instance_addr)
+{
+        u32 producer;
+        u32 consumer;
+        u32 context;
+        struct megasas_cmd *cmd;
+        struct megasas_instance *instance =
+                                (struct megasas_instance *)instance_addr;
+        unsigned long flags;
+
+        /* If we have already declared adapter dead, donot complete cmds */
+        if (instance->hw_crit_error)
+                return;
+
+        spin_lock_irqsave(&instance->completion_lock, flags);
+
+        producer = *instance->producer;
+        consumer = *instance->consumer;
+
+        while (consumer != producer) {
+                context = instance->reply_queue[consumer];
+
+                cmd = instance->cmd_list[context];
+
+                megasas_complete_cmd(instance, cmd, DID_OK);
+
+                consumer++;
+                if (consumer == (instance->max_fw_cmds + 1)) {
+                        consumer = 0;
+                }
+        }
+
+        *instance->consumer = producer;
+
+        spin_unlock_irqrestore(&instance->completion_lock, flags);
+
+        /*
+         * Check if we can restore can_queue
+         */
+        if (instance->flag & MEGASAS_FW_BUSY
+                && time_after(jiffies, instance->last_time + 5 * HZ)
+                && atomic_read(&instance->fw_outstanding) < 17) {
+
+                spin_lock_irqsave(instance->host->host_lock, flags);
+                instance->flag &= ~MEGASAS_FW_BUSY;
+                instance->host->can_queue =
+                                instance->max_fw_cmds - MEGASAS_INT_CMDS;
+
+                spin_unlock_irqrestore(instance->host->host_lock, flags);
+        }
+}
+
+/**
  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
  * @instance:                           Adapter soft state
  *
@@ -908,6 +985,11 @@ static int megasas_wait_for_outstanding(struct megasas_instance *instance)
                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
                         printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
                                "commands to complete\n",i,outstanding);
+                        /*
+                         * Call cmd completion routine. Cmd to be
+                         * be completed directly without depending on isr.
+                         */
+                        megasas_complete_cmd_dpc((unsigned long)instance);
                 }
 
                 msleep(1000);
@@ -1100,7 +1182,7 @@ megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
 static struct scsi_host_template megasas_template = {
 
         .module = THIS_MODULE,
-        .name = "LSI Logic SAS based MegaRAID driver",
+        .name = "LSI SAS based MegaRAID driver",
         .proc_name = "megaraid_sas",
         .slave_configure = megasas_slave_configure,
         .queuecommand = megasas_queue_command,
@@ -1749,57 +1831,119 @@ megasas_get_ctrl_info(struct megasas_instance *instance,
 }
 
 /**
- * megasas_complete_cmd_dpc      -      Returns FW's controller structure
- * @instance_addr:                      Address of adapter soft state
+ * megasas_issue_init_mfi -     Initializes the FW
+ * @instance:           Adapter soft state
  *
- * Tasklet to complete cmds
+ * Issues the INIT MFI cmd
  */
-static void megasas_complete_cmd_dpc(unsigned long instance_addr)
+static int
+megasas_issue_init_mfi(struct megasas_instance *instance)
 {
-        u32 producer;
-        u32 consumer;
         u32 context;
+
         struct megasas_cmd *cmd;
-        struct megasas_instance *instance = (struct megasas_instance *)instance_addr;
-        unsigned long flags;
 
-        /* If we have already declared adapter dead, donot complete cmds */
-        if (instance->hw_crit_error)
-                return;
+        struct megasas_init_frame *init_frame;
+        struct megasas_init_queue_info *initq_info;
+        dma_addr_t init_frame_h;
+        dma_addr_t initq_info_h;
 
-        producer = *instance->producer;
-        consumer = *instance->consumer;
+        /*
+         * Prepare a init frame. Note the init frame points to queue info
+         * structure. Each frame has SGL allocated after first 64 bytes. For
+         * this frame - since we don't need any SGL - we use SGL's space as
+         * queue info structure
+         *
+         * We will not get a NULL command below. We just created the pool.
+         */
+        cmd = megasas_get_cmd(instance);
 
-        while (consumer != producer) {
-                context = instance->reply_queue[consumer];
+        init_frame = (struct megasas_init_frame *)cmd->frame;
+        initq_info = (struct megasas_init_queue_info *)
+                ((unsigned long)init_frame + 64);
 
-                cmd = instance->cmd_list[context];
+        init_frame_h = cmd->frame_phys_addr;
+        initq_info_h = init_frame_h + 64;
 
-                megasas_complete_cmd(instance, cmd, DID_OK);
+        context = init_frame->context;
+        memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
+        memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
+        init_frame->context = context;
 
-                consumer++;
-                if (consumer == (instance->max_fw_cmds + 1)) {
-                        consumer = 0;
-                }
-        }
+        initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
+        initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
 
-        *instance->consumer = producer;
+        initq_info->producer_index_phys_addr_lo = instance->producer_h;
+        initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
+
+        init_frame->cmd = MFI_CMD_INIT;
+        init_frame->cmd_status = 0xFF;
+        init_frame->queue_info_new_phys_addr_lo = initq_info_h;
+
+        init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
 
         /*
-         * Check if we can restore can_queue
+         * disable the intr before firing the init frame to FW
          */
-        if (instance->flag & MEGASAS_FW_BUSY
-                && time_after(jiffies, instance->last_time + 5 * HZ)
-                && atomic_read(&instance->fw_outstanding) < 17) {
+        instance->instancet->disable_intr(instance->reg_set);
 
-                spin_lock_irqsave(instance->host->host_lock, flags);
-                instance->flag &= ~MEGASAS_FW_BUSY;
-                instance->host->can_queue =
-                                instance->max_fw_cmds - MEGASAS_INT_CMDS;
+        /*
+         * Issue the init frame in polled mode
+         */
 
-                spin_unlock_irqrestore(instance->host->host_lock, flags);
+        if (megasas_issue_polled(instance, cmd)) {
+                printk(KERN_ERR "megasas: Failed to init firmware\n");
+                megasas_return_cmd(instance, cmd);
+                goto fail_fw_init;
         }
 
+        megasas_return_cmd(instance, cmd);
+
+        return 0;
+
+fail_fw_init:
+        return -EINVAL;
+}
+
+/**
+ * megasas_start_timer - Initializes a timer object
+ * @instance:           Adapter soft state
+ * @timer:              timer object to be initialized
+ * @fn:                 timer function
+ * @interval:           time interval between timer function call
+ */
+static inline void
+megasas_start_timer(struct megasas_instance *instance,
+                        struct timer_list *timer,
+                        void *fn, unsigned long interval)
+{
+        init_timer(timer);
+        timer->expires = jiffies + interval;
+        timer->data = (unsigned long)instance;
+        timer->function = fn;
+        add_timer(timer);
+}
+
+/**
+ * megasas_io_completion_timer - Timer fn
+ * @instance_addr:      Address of adapter soft state
+ *
+ * Schedules tasklet for cmd completion
+ * if poll_mode_io is set
+ */
+static void
+megasas_io_completion_timer(unsigned long instance_addr)
+{
+        struct megasas_instance *instance =
+                        (struct megasas_instance *)instance_addr;
+
+        if (atomic_read(&instance->fw_outstanding))
+                tasklet_schedule(&instance->isr_tasklet);
+
+        /* Restart timer */
+        if (poll_mode_io)
+                mod_timer(&instance->io_completion_timer,
+                        jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
 }
 
 /**
@@ -1814,22 +1958,15 @@ static int megasas_init_mfi(struct megasas_instance *instance)
         u32 reply_q_sz;
         u32 max_sectors_1;
         u32 max_sectors_2;
+        u32 tmp_sectors;
         struct megasas_register_set __iomem *reg_set;
-
-        struct megasas_cmd *cmd;
         struct megasas_ctrl_info *ctrl_info;
-
-        struct megasas_init_frame *init_frame;
-        struct megasas_init_queue_info *initq_info;
-        dma_addr_t init_frame_h;
-        dma_addr_t initq_info_h;
-
         /*
          * Map the message registers
          */
         instance->base_addr = pci_resource_start(instance->pdev, 0);
 
-        if (pci_request_regions(instance->pdev, "megasas: LSI Logic")) {
+        if (pci_request_regions(instance->pdev, "megasas: LSI")) {
                 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
                 return -EBUSY;
         }
@@ -1900,52 +2037,8 @@ static int megasas_init_mfi(struct megasas_instance *instance)
                 goto fail_reply_queue;
         }
 
-        /*
-         * Prepare a init frame. Note the init frame points to queue info
-         * structure. Each frame has SGL allocated after first 64 bytes. For
-         * this frame - since we don't need any SGL - we use SGL's space as
-         * queue info structure
-         *
-         * We will not get a NULL command below. We just created the pool.
-         */
-        cmd = megasas_get_cmd(instance);
-
-        init_frame = (struct megasas_init_frame *)cmd->frame;
-        initq_info = (struct megasas_init_queue_info *)
-            ((unsigned long)init_frame + 64);
-
-        init_frame_h = cmd->frame_phys_addr;
-        initq_info_h = init_frame_h + 64;
-
-        memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
-        memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
-
-        initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
-        initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
-
-        initq_info->producer_index_phys_addr_lo = instance->producer_h;
-        initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
-
-        init_frame->cmd = MFI_CMD_INIT;
-        init_frame->cmd_status = 0xFF;
-        init_frame->queue_info_new_phys_addr_lo = initq_info_h;
-
-        init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
-
-        /*
-         * disable the intr before firing the init frame to FW
-         */
-        instance->instancet->disable_intr(instance->reg_set);
-
-        /*
-         * Issue the init frame in polled mode
-         */
-        if (megasas_issue_polled(instance, cmd)) {
-                printk(KERN_DEBUG "megasas: Failed to init firmware\n");
+        if (megasas_issue_init_mfi(instance))
                 goto fail_fw_init;
-        }
-
-        megasas_return_cmd(instance, cmd);
 
         ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
 
@@ -1958,17 +2051,20 @@ static int megasas_init_mfi(struct megasas_instance *instance)
          * Note that older firmwares ( < FW ver 30) didn't report information
          * to calculate max_sectors_1. So the number ended up as zero always.
          */
+        tmp_sectors = 0;
         if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
 
                 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
                     ctrl_info->max_strips_per_io;
                 max_sectors_2 = ctrl_info->max_request_size;
 
-                instance->max_sectors_per_req = (max_sectors_1 < max_sectors_2)
-                    ? max_sectors_1 : max_sectors_2;
-        } else
-                instance->max_sectors_per_req = instance->max_num_sge *
-                    PAGE_SIZE / 512;
+                tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
+        }
+
+        instance->max_sectors_per_req = instance->max_num_sge *
+                                                PAGE_SIZE / 512;
+        if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
+                instance->max_sectors_per_req = tmp_sectors;
 
         kfree(ctrl_info);
 
@@ -1976,12 +2072,17 @@ static int megasas_init_mfi(struct megasas_instance *instance)
         * Setup tasklet for cmd completion
         */
 
-        tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
-                        (unsigned long)instance);
+        tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
+                (unsigned long)instance);
+
+        /* Initialize the cmd completion timer */
+        if (poll_mode_io)
+                megasas_start_timer(instance, &instance->io_completion_timer,
+                                megasas_io_completion_timer,
+                                MEGASAS_COMPLETION_TIMER_INTERVAL);
         return 0;
 
       fail_fw_init:
-        megasas_return_cmd(instance, cmd);
 
         pci_free_consistent(instance->pdev, reply_q_sz,
                             instance->reply_queue, instance->reply_queue_h);
@@ -2263,6 +2364,28 @@ static int megasas_io_attach(struct megasas_instance *instance)
         return 0;
 }
 
+static int
+megasas_set_dma_mask(struct pci_dev *pdev)
+{
+        /*
+         * All our contollers are capable of performing 64-bit DMA
+         */
+        if (IS_DMA64) {
+                if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) != 0) {
+
+                        if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
+                                goto fail_set_dma_mask;
+                }
+        } else {
+                if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
+                        goto fail_set_dma_mask;
+        }
+        return 0;
+
+fail_set_dma_mask:
+        return 1;
+}
+
 /**
  * megasas_probe_one -  PCI hotplug entry point
  * @pdev:               PCI device structure
@@ -2296,19 +2419,8 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 
         pci_set_master(pdev);
 
-        /*
-         * All our contollers are capable of performing 64-bit DMA
-         */
-        if (IS_DMA64) {
-                if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) != 0) {
-
-                        if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
-                                goto fail_set_dma_mask;
-                }
-        } else {
-                if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
-                        goto fail_set_dma_mask;
-        }
+        if (megasas_set_dma_mask(pdev))
+                goto fail_set_dma_mask;
 
         host = scsi_host_alloc(&megasas_template,
                                sizeof(struct megasas_instance));
@@ -2357,8 +2469,9 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
         init_waitqueue_head(&instance->abort_cmd_wait_q);
 
         spin_lock_init(&instance->cmd_pool_lock);
+        spin_lock_init(&instance->completion_lock);
 
-        sema_init(&instance->aen_mutex, 1);
+        mutex_init(&instance->aen_mutex);
         sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
 
         /*
@@ -2490,8 +2603,10 @@ static void megasas_flush_cache(struct megasas_instance *instance)
 /**
  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
  * @instance:                           Adapter soft state
+ * @opcode:                             Shutdown/Hibernate
  */
-static void megasas_shutdown_controller(struct megasas_instance *instance)
+static void megasas_shutdown_controller(struct megasas_instance *instance,
+                                        u32 opcode)
 {
         struct megasas_cmd *cmd;
         struct megasas_dcmd_frame *dcmd;
@@ -2514,7 +2629,7 @@ static void megasas_shutdown_controller(struct megasas_instance *instance)
         dcmd->flags = MFI_FRAME_DIR_NONE;
         dcmd->timeout = 0;
         dcmd->data_xfer_len = 0;
-        dcmd->opcode = MR_DCMD_CTRL_SHUTDOWN;
+        dcmd->opcode = opcode;
 
         megasas_issue_blocked_cmd(instance, cmd);
 
@@ -2524,6 +2639,139 @@ static void megasas_shutdown_controller(struct megasas_instance *instance)
 }
 
 /**
+ * megasas_suspend -    driver suspend entry point
+ * @pdev:               PCI device structure
+ * @state:              PCI power state to suspend routine
+ */
+static int __devinit
+megasas_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+        struct Scsi_Host *host;
+        struct megasas_instance *instance;
+
+        instance = pci_get_drvdata(pdev);
+        host = instance->host;
+
+        if (poll_mode_io)
+                del_timer_sync(&instance->io_completion_timer);
+
+        megasas_flush_cache(instance);
+        megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
+        tasklet_kill(&instance->isr_tasklet);
+
+        pci_set_drvdata(instance->pdev, instance);
+        instance->instancet->disable_intr(instance->reg_set);
+        free_irq(instance->pdev->irq, instance);
+
+        pci_save_state(pdev);
+        pci_disable_device(pdev);
+
+        pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+        return 0;
+}
+
+/**
+ * megasas_resume-      driver resume entry point
+ * @pdev:               PCI device structure
+ */
+static int __devinit
+megasas_resume(struct pci_dev *pdev)
+{
+        int rval;
+        struct Scsi_Host *host;
+        struct megasas_instance *instance;
+
+        instance = pci_get_drvdata(pdev);
+        host = instance->host;
+        pci_set_power_state(pdev, PCI_D0);
+        pci_enable_wake(pdev, PCI_D0, 0);
+        pci_restore_state(pdev);
+
+        /*
+         * PCI prepping: enable device set bus mastering and dma mask
+         */
+        rval = pci_enable_device(pdev);
+
+        if (rval) {
+                printk(KERN_ERR "megasas: Enable device failed\n");
+                return rval;
+        }
+
+        pci_set_master(pdev);
+
+        if (megasas_set_dma_mask(pdev))
+                goto fail_set_dma_mask;
+
+        /*
+         * Initialize MFI Firmware
+         */
+
+        *instance->producer = 0;
+        *instance->consumer = 0;
+
+        atomic_set(&instance->fw_outstanding, 0);
+
+        /*
+         * We expect the FW state to be READY
+         */
+        if (megasas_transition_to_ready(instance))
+                goto fail_ready_state;
+
+        if (megasas_issue_init_mfi(instance))
+                goto fail_init_mfi;
+
+        tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
+                        (unsigned long)instance);
+
+        /*
+         * Register IRQ
+         */
+        if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED,
+                "megasas", instance)) {
+                printk(KERN_ERR "megasas: Failed to register IRQ\n");
+                goto fail_irq;
+        }
+
+        instance->instancet->enable_intr(instance->reg_set);
+
+        /*
+         * Initiate AEN (Asynchronous Event Notification)
+         */
+        if (megasas_start_aen(instance))
+                printk(KERN_ERR "megasas: Start AEN failed\n");
+
+        /* Initialize the cmd completion timer */
+        if (poll_mode_io)
+                megasas_start_timer(instance, &instance->io_completion_timer,
+                                megasas_io_completion_timer,
+                                MEGASAS_COMPLETION_TIMER_INTERVAL);
+        return 0;
+
+fail_irq:
+fail_init_mfi:
+        if (instance->evt_detail)
+                pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
+                                instance->evt_detail,
+                                instance->evt_detail_h);
+
+        if (instance->producer)
+                pci_free_consistent(pdev, sizeof(u32), instance->producer,
+                                instance->producer_h);
+        if (instance->consumer)
+                pci_free_consistent(pdev, sizeof(u32), instance->consumer,
+                                instance->consumer_h);
+        scsi_host_put(host);
+
+fail_set_dma_mask:
+fail_ready_state:
+
+        pci_disable_device(pdev);
+
+        return -ENODEV;
+}
+
+/**
  * megasas_detach_one - PCI hot"un"plug entry point
  * @pdev:               PCI device structure
  */
@@ -2536,9 +2784,12 @@ static void megasas_detach_one(struct pci_dev *pdev)
         instance = pci_get_drvdata(pdev);
         host = instance->host;
 
+        if (poll_mode_io)
+                del_timer_sync(&instance->io_completion_timer);
+
         scsi_remove_host(instance->host);
         megasas_flush_cache(instance);
-        megasas_shutdown_controller(instance);
+        megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
         tasklet_kill(&instance->isr_tasklet);
 
         /*
@@ -2660,6 +2911,7 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
         void *sense = NULL;
         dma_addr_t sense_handle;
         u32 *sense_ptr;
+        unsigned long *sense_buff;
 
         memset(kbuff_arr, 0, sizeof(kbuff_arr));
 
@@ -2764,14 +3016,16 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
          */
         if (ioc->sense_len) {
                 /*
-                 * sense_ptr points to the location that has the user
+                 * sense_buff points to the location that has the user
                  * sense buffer address
                  */
-                sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw +
-                                     ioc->sense_off);
+                sense_buff = (unsigned long *) ((unsigned long)ioc->frame.raw +
+                                                                ioc->sense_off);
 
-                if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
-                                 sense, ioc->sense_len)) {
+                if (copy_to_user((void __user *)(unsigned long)(*sense_buff),
+                                sense, ioc->sense_len)) {
+                        printk(KERN_ERR "megasas: Failed to copy out to user "
+                                        "sense data\n");
                         error = -EFAULT;
                         goto out;
                 }
@@ -2874,10 +3128,10 @@ static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
         if (!instance)
                 return -ENODEV;
 
-        down(&instance->aen_mutex);
+        mutex_lock(&instance->aen_mutex);
         error = megasas_register_aen(instance, aen.seq_num,
                                      aen.class_locale_word);
-        up(&instance->aen_mutex);
+        mutex_unlock(&instance->aen_mutex);
         return error;
 }
 
@@ -2977,6 +3231,8 @@ static struct pci_driver megasas_pci_driver = {
         .id_table = megasas_pci_table,
         .probe = megasas_probe_one,
         .remove = __devexit_p(megasas_detach_one),
+        .suspend = megasas_suspend,
+        .resume = megasas_resume,
         .shutdown = megasas_shutdown,
 };
 
@@ -3004,7 +3260,7 @@ static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
 static ssize_t
 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
 {
-        return sprintf(buf,"%u",megasas_dbg_lvl);
+        return sprintf(buf, "%u\n", megasas_dbg_lvl);
 }
 
 static ssize_t
@@ -3019,7 +3275,65 @@ megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t coun
 }
 
 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUGO, megasas_sysfs_show_dbg_lvl,
-                   megasas_sysfs_set_dbg_lvl);
+                megasas_sysfs_set_dbg_lvl);
+
+static ssize_t
+megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
+{
+        return sprintf(buf, "%u\n", poll_mode_io);
+}
+
+static ssize_t
+megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
+                                const char *buf, size_t count)
+{
+        int retval = count;
+        int tmp = poll_mode_io;
+        int i;
+        struct megasas_instance *instance;
+
+        if (sscanf(buf, "%u", &poll_mode_io) < 1) {
+                printk(KERN_ERR "megasas: could not set poll_mode_io\n");
+                retval = -EINVAL;
+        }
+
+        /*
+         * Check if poll_mode_io is already set or is same as previous value
+         */
+        if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
+                goto out;
+
+        if (poll_mode_io) {
+                /*
+                 * Start timers for all adapters
+                 */
+                for (i = 0; i < megasas_mgmt_info.max_index; i++) {
+                        instance = megasas_mgmt_info.instance[i];
+                        if (instance) {
+                                megasas_start_timer(instance,
+                                        &instance->io_completion_timer,
+                                        megasas_io_completion_timer,
+                                        MEGASAS_COMPLETION_TIMER_INTERVAL);
+                        }
+                }
+        } else {
+                /*
+                 * Delete timers for all adapters
+                 */
+                for (i = 0; i < megasas_mgmt_info.max_index; i++) {
+                        instance = megasas_mgmt_info.instance[i];
+                        if (instance)
+                                del_timer_sync(&instance->io_completion_timer);
+                }
+        }
+
+out:
+        return retval;
+}
+
+static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUGO,
+                megasas_sysfs_show_poll_mode_io,
+                megasas_sysfs_set_poll_mode_io);
 
 /**
  * megasas_init - Driver load entry point
@@ -3070,8 +3384,16 @@ static int __init megasas_init(void)
                                   &driver_attr_dbg_lvl);
         if (rval)
                 goto err_dcf_dbg_lvl;
+        rval = driver_create_file(&megasas_pci_driver.driver,
+                                  &driver_attr_poll_mode_io);
+        if (rval)
+                goto err_dcf_poll_mode_io;
 
         return rval;
+
+err_dcf_poll_mode_io:
+        driver_remove_file(&megasas_pci_driver.driver,
+                           &driver_attr_dbg_lvl);
 err_dcf_dbg_lvl:
         driver_remove_file(&megasas_pci_driver.driver,
                            &driver_attr_release_date);
@@ -3090,6 +3412,8 @@ err_pcidrv:
 static void __exit megasas_exit(void)
 {
         driver_remove_file(&megasas_pci_driver.driver,
+                           &driver_attr_poll_mode_io);
+        driver_remove_file(&megasas_pci_driver.driver,
                            &driver_attr_dbg_lvl);
         driver_remove_file(&megasas_pci_driver.driver,
                            &driver_attr_release_date);
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 4dffc918a414..6466bdf548c2 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -2,7 +2,7 @@
  *
  *              Linux MegaRAID driver for SAS based RAID controllers
  *
- * Copyright (c) 2003-2005  LSI Logic Corporation.
+ * Copyright (c) 2003-2005  LSI Corporation.
  *
  *              This program is free software; you can redistribute it and/or
  *              modify it under the terms of the GNU General Public License
@@ -18,9 +18,9 @@
 /*
  * MegaRAID SAS Driver meta data
  */
-#define MEGASAS_VERSION                         "00.00.03.10-rc5"
-#define MEGASAS_RELDATE                         "May 17, 2007"
-#define MEGASAS_EXT_VERSION                     "Thu May 17 10:09:32 PDT 2007"
+#define MEGASAS_VERSION                         "00.00.03.16-rc1"
+#define MEGASAS_RELDATE                         "Nov. 07, 2007"
+#define MEGASAS_EXT_VERSION                     "Thu. Nov. 07 10:09:32 PDT 2007"
 
 /*
  * Device IDs
@@ -117,6 +117,7 @@
 #define MR_FLUSH_DISK_CACHE                     0x02
 
 #define MR_DCMD_CTRL_SHUTDOWN                   0x01050000
+#define MR_DCMD_HIBERNATE_SHUTDOWN              0x01060000
 #define MR_ENABLE_DRIVE_SPINDOWN                0x01
 
 #define MR_DCMD_CTRL_EVENT_GET_INFO             0x01040100
@@ -570,7 +571,8 @@ struct megasas_ctrl_info {
 #define IS_DMA64                                (sizeof(dma_addr_t) == 8)
 
 #define MFI_OB_INTR_STATUS_MASK                 0x00000002
-#define MFI_POLL_TIMEOUT_SECS                   10
+#define MFI_POLL_TIMEOUT_SECS                   60
+#define MEGASAS_COMPLETION_TIMER_INTERVAL      (HZ/10)
 
 #define MFI_REPLY_1078_MESSAGE_INTERRUPT        0x80000000
 
@@ -1083,13 +1085,15 @@ struct megasas_instance {
         struct megasas_cmd **cmd_list;
         struct list_head cmd_pool;
         spinlock_t cmd_pool_lock;
+        /* used to synch producer, consumer ptrs in dpc */
+        spinlock_t completion_lock;
         struct dma_pool *frame_dma_pool;
         struct dma_pool *sense_dma_pool;
 
         struct megasas_evt_detail *evt_detail;
         dma_addr_t evt_detail_h;
         struct megasas_cmd *aen_cmd;
-        struct semaphore aen_mutex;
+        struct mutex aen_mutex;
         struct semaphore ioctl_sem;
 
         struct Scsi_Host *host;
@@ -1108,6 +1112,8 @@ struct megasas_instance {
 
         u8 flag;
         unsigned long last_time;
+
+        struct timer_list io_completion_timer;
 };
 
 #define MEGASAS_IS_LOGICAL(scp)                                         \
diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c
index 016c462bc771..c02771aa6c9b 100644
--- a/drivers/scsi/ncr53c8xx.c
+++ b/drivers/scsi/ncr53c8xx.c
@@ -4963,7 +4963,8 @@ void ncr_complete (struct ncb *np, struct ccb *cp)
                 **      Copy back sense data to caller's buffer.
                 */
                 memcpy(cmd->sense_buffer, cp->sense_buf,
-                       min(sizeof(cmd->sense_buffer), sizeof(cp->sense_buf)));
+                       min_t(size_t, SCSI_SENSE_BUFFERSIZE,
+                             sizeof(cp->sense_buf)));
 
                 if (DEBUG_FLAGS & (DEBUG_RESULT|DEBUG_TINY)) {
                         u_char * p = (u_char*) & cmd->sense_buffer;
diff --git a/drivers/scsi/pcmcia/Kconfig b/drivers/scsi/pcmcia/Kconfig
index fa481b515ead..53857c6b6d4d 100644
--- a/drivers/scsi/pcmcia/Kconfig
+++ b/drivers/scsi/pcmcia/Kconfig
@@ -6,7 +6,8 @@ menuconfig SCSI_LOWLEVEL_PCMCIA
         bool "PCMCIA SCSI adapter support"
         depends on SCSI!=n && PCMCIA!=n
 
-if SCSI_LOWLEVEL_PCMCIA && SCSI && PCMCIA
+# drivers have problems when build in, so require modules
+if SCSI_LOWLEVEL_PCMCIA && SCSI && PCMCIA && m
 
 config PCMCIA_AHA152X
         tristate "Adaptec AHA152X PCMCIA support"
diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c
index a45d89b14147..5082ca3c6876 100644
--- a/drivers/scsi/pcmcia/nsp_cs.c
+++ b/drivers/scsi/pcmcia/nsp_cs.c
@@ -135,6 +135,11 @@ static nsp_hw_data nsp_data_base; /* attach <-> detect glue */
 
 #define NSP_DEBUG_BUF_LEN               150
 
+static inline void nsp_inc_resid(struct scsi_cmnd *SCpnt, int residInc)
+{
+        scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) + residInc);
+}
+
 static void nsp_cs_message(const char *func, int line, char *type, char *fmt, ...)
 {
         va_list args;
@@ -192,8 +197,10 @@ static int nsp_queuecommand(struct scsi_cmnd *SCpnt,
 #endif
         nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
 
-        nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "SCpnt=0x%p target=%d lun=%d buff=0x%p bufflen=%d use_sg=%d",
-                   SCpnt, target, SCpnt->device->lun, SCpnt->request_buffer, SCpnt->request_bufflen, SCpnt->use_sg);
+        nsp_dbg(NSP_DEBUG_QUEUECOMMAND,
+                "SCpnt=0x%p target=%d lun=%d sglist=0x%p bufflen=%d sg_count=%d",
+                SCpnt, target, SCpnt->device->lun, scsi_sglist(SCpnt),
+                scsi_bufflen(SCpnt), scsi_sg_count(SCpnt));
         //nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "before CurrentSC=0x%p", data->CurrentSC);
 
         SCpnt->scsi_done        = done;
@@ -225,7 +232,7 @@ static int nsp_queuecommand(struct scsi_cmnd *SCpnt,
         SCpnt->SCp.have_data_in = IO_UNKNOWN;
         SCpnt->SCp.sent_command = 0;
         SCpnt->SCp.phase        = PH_UNDETERMINED;
-        SCpnt->resid            = SCpnt->request_bufflen;
+        scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
 
         /* setup scratch area
            SCp.ptr              : buffer pointer
@@ -233,14 +240,14 @@ static int nsp_queuecommand(struct scsi_cmnd *SCpnt,
            SCp.buffer           : next buffer
            SCp.buffers_residual : left buffers in list
            SCp.phase            : current state of the command */
-        if (SCpnt->use_sg) {
-                SCpnt->SCp.buffer           = (struct scatterlist *) SCpnt->request_buffer;
+        if (scsi_bufflen(SCpnt)) {
+                SCpnt->SCp.buffer           = scsi_sglist(SCpnt);
                 SCpnt->SCp.ptr              = BUFFER_ADDR;
                 SCpnt->SCp.this_residual    = SCpnt->SCp.buffer->length;
-                SCpnt->SCp.buffers_residual = SCpnt->use_sg - 1;
+                SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
         } else {
-                SCpnt->SCp.ptr              = (char *) SCpnt->request_buffer;
-                SCpnt->SCp.this_residual    = SCpnt->request_bufflen;
+                SCpnt->SCp.ptr              = NULL;
+                SCpnt->SCp.this_residual    = 0;
                 SCpnt->SCp.buffer           = NULL;
                 SCpnt->SCp.buffers_residual = 0;
         }
@@ -721,7 +728,9 @@ static void nsp_pio_read(struct scsi_cmnd *SCpnt)
         ocount = data->FifoCount;
 
         nsp_dbg(NSP_DEBUG_DATA_IO, "in SCpnt=0x%p resid=%d ocount=%d ptr=0x%p this_residual=%d buffers=0x%p nbuf=%d",
-                SCpnt, SCpnt->resid, ocount, SCpnt->SCp.ptr, SCpnt->SCp.this_residual, SCpnt->SCp.buffer, SCpnt->SCp.buffers_residual);
+                SCpnt, scsi_get_resid(SCpnt), ocount, SCpnt->SCp.ptr,
+                SCpnt->SCp.this_residual, SCpnt->SCp.buffer,
+                SCpnt->SCp.buffers_residual);
 
         time_out = 1000;
 
@@ -771,7 +780,7 @@ static void nsp_pio_read(struct scsi_cmnd *SCpnt)
                         return;
                 }
 
-                SCpnt->resid             -= res;
+                nsp_inc_resid(SCpnt, -res);
                 SCpnt->SCp.ptr           += res;
                 SCpnt->SCp.this_residual -= res;
                 ocount                   += res;
@@ -795,10 +804,12 @@ static void nsp_pio_read(struct scsi_cmnd *SCpnt)
 
         if (time_out == 0) {
                 nsp_msg(KERN_DEBUG, "pio read timeout resid=%d this_residual=%d buffers_residual=%d",
-                        SCpnt->resid, SCpnt->SCp.this_residual, SCpnt->SCp.buffers_residual);
+                        scsi_get_resid(SCpnt), SCpnt->SCp.this_residual,
+                        SCpnt->SCp.buffers_residual);
         }
         nsp_dbg(NSP_DEBUG_DATA_IO, "read ocount=0x%x", ocount);
-        nsp_dbg(NSP_DEBUG_DATA_IO, "r cmd=%d resid=0x%x\n", data->CmdId, SCpnt->resid);
+        nsp_dbg(NSP_DEBUG_DATA_IO, "r cmd=%d resid=0x%x\n", data->CmdId,
+                                                        scsi_get_resid(SCpnt));
 }
 
 /*
@@ -816,7 +827,9 @@ static void nsp_pio_write(struct scsi_cmnd *SCpnt)
         ocount   = data->FifoCount;
 
         nsp_dbg(NSP_DEBUG_DATA_IO, "in fifocount=%d ptr=0x%p this_residual=%d buffers=0x%p nbuf=%d resid=0x%x",
-                data->FifoCount, SCpnt->SCp.ptr, SCpnt->SCp.this_residual, SCpnt->SCp.buffer, SCpnt->SCp.buffers_residual, SCpnt->resid);
+                data->FifoCount, SCpnt->SCp.ptr, SCpnt->SCp.this_residual,
+                SCpnt->SCp.buffer, SCpnt->SCp.buffers_residual,
+                scsi_get_resid(SCpnt));
 
         time_out = 1000;
 
@@ -830,7 +843,7 @@ static void nsp_pio_write(struct scsi_cmnd *SCpnt)
 
                         nsp_dbg(NSP_DEBUG_DATA_IO, "phase changed stat=0x%x, res=%d\n", stat, res);
                         /* Put back pointer */
-                        SCpnt->resid             += res;
+                        nsp_inc_resid(SCpnt, res);
                         SCpnt->SCp.ptr           -= res;
                         SCpnt->SCp.this_residual += res;
                         ocount                   -= res;
@@ -866,7 +879,7 @@ static void nsp_pio_write(struct scsi_cmnd *SCpnt)
                         break;
                 }
 
-                SCpnt->resid             -= res;
+                nsp_inc_resid(SCpnt, -res);
                 SCpnt->SCp.ptr           += res;
                 SCpnt->SCp.this_residual -= res;
                 ocount                   += res;
@@ -886,10 +899,12 @@ static void nsp_pio_write(struct scsi_cmnd *SCpnt)
         data->FifoCount = ocount;
 
         if (time_out == 0) {
-                nsp_msg(KERN_DEBUG, "pio write timeout resid=0x%x", SCpnt->resid);
+                nsp_msg(KERN_DEBUG, "pio write timeout resid=0x%x",
+                                                        scsi_get_resid(SCpnt));
         }
         nsp_dbg(NSP_DEBUG_DATA_IO, "write ocount=0x%x", ocount);
-        nsp_dbg(NSP_DEBUG_DATA_IO, "w cmd=%d resid=0x%x\n", data->CmdId, SCpnt->resid);
+        nsp_dbg(NSP_DEBUG_DATA_IO, "w cmd=%d resid=0x%x\n", data->CmdId,
+                                                        scsi_get_resid(SCpnt));
 }
 #undef RFIFO_CRIT
 #undef WFIFO_CRIT
@@ -911,9 +926,8 @@ static int nsp_nexus(struct scsi_cmnd *SCpnt)
         nsp_index_write(base, SYNCREG,  sync->SyncRegister);
         nsp_index_write(base, ACKWIDTH, sync->AckWidth);
 
-        if (SCpnt->use_sg    == 0        ||
-            SCpnt->resid % 4 != 0        ||
-            SCpnt->resid     <= PAGE_SIZE ) {
+        if (scsi_get_resid(SCpnt) % 4 != 0 ||
+            scsi_get_resid(SCpnt) <= PAGE_SIZE ) {
                 data->TransferMode = MODE_IO8;
         } else if (nsp_burst_mode == BURST_MEM32) {
                 data->TransferMode = MODE_MEM32;
diff --git a/drivers/scsi/ppa.c b/drivers/scsi/ppa.c
index 67ee51a3d7e1..f655ae320b48 100644
--- a/drivers/scsi/ppa.c
+++ b/drivers/scsi/ppa.c
@@ -750,18 +750,16 @@ static int ppa_engine(ppa_struct *dev, struct scsi_cmnd *cmd)
                 cmd->SCp.phase++;
 
         case 4:         /* Phase 4 - Setup scatter/gather buffers */
-                if (cmd->use_sg) {
-                        /* if many buffers are available, start filling the first */
-                        cmd->SCp.buffer = (struct scatterlist *) cmd->request_buffer;
+                if (scsi_bufflen(cmd)) {
+                        cmd->SCp.buffer = scsi_sglist(cmd);
                         cmd->SCp.this_residual = cmd->SCp.buffer->length;
                         cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
                 } else {
-                        /* else fill the only available buffer */
                         cmd->SCp.buffer = NULL;
-                        cmd->SCp.this_residual = cmd->request_bufflen;
-                        cmd->SCp.ptr = cmd->request_buffer;
+                        cmd->SCp.this_residual = 0;
+                        cmd->SCp.ptr = NULL;
                 }
-                cmd->SCp.buffers_residual = cmd->use_sg - 1;
+                cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
                 cmd->SCp.phase++;
 
         case 5:         /* Phase 5 - Data transfer stage */
diff --git a/drivers/scsi/psi240i.c b/drivers/scsi/psi240i.c
deleted file mode 100644
index 899e89d6fe67..000000000000
--- a/drivers/scsi/psi240i.c
+++ /dev/null
@@ -1,689 +0,0 @@
-/*+M*************************************************************************
- * Perceptive Solutions, Inc. PSI-240I device driver proc support for Linux.
- *
- * Copyright (c) 1997 Perceptive Solutions, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- *      File Name:              psi240i.c
- *
- *      Description:    SCSI driver for the PSI240I EIDE interface card.
- *
- *-M*************************************************************************/
-
-#include <linux/module.h>
-
-#include <linux/blkdev.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/stat.h>
-
-#include <asm/dma.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-
-#include "psi240i.h"
-#include "psi_chip.h"
-
-//#define DEBUG 1
-
-#ifdef DEBUG
-#define DEB(x) x
-#else
-#define DEB(x)
-#endif
-
-#define MAXBOARDS 6     /* Increase this and the sizes of the arrays below, if you need more. */
-
-#define PORT_DATA                               0
-#define PORT_ERROR                              1
-#define PORT_SECTOR_COUNT               2
-#define PORT_LBA_0                              3
-#define PORT_LBA_8                              4
-#define PORT_LBA_16                             5
-#define PORT_LBA_24                             6
-#define PORT_STAT_CMD                   7
-#define PORT_SEL_FAIL                   8
-#define PORT_IRQ_STATUS                 9
-#define PORT_ADDRESS                    10
-#define PORT_FAIL                               11
-#define PORT_ALT_STAT                   12
-
-typedef struct
-        {
-        UCHAR                   device;                         // device code
-        UCHAR                   byte6;                          // device select register image
-        UCHAR                   spigot;                         // spigot number
-        UCHAR                   expectingIRQ;           // flag for expecting and interrupt
-        USHORT                  sectors;                        // number of sectors per track
-        USHORT                  heads;                          // number of heads
-        USHORT                  cylinders;                      // number of cylinders for this device
-        USHORT                  spareword;                      // placeholder
-        ULONG                   blocks;                         // number of blocks on device
-        }       OUR_DEVICE, *POUR_DEVICE;
-
-typedef struct
-        {
-        USHORT           ports[13];
-        OUR_DEVICE       device[8];
-        struct scsi_cmnd *pSCmnd;
-        IDE_STRUCT       ide;
-        ULONG            startSector;
-        USHORT           sectorCount;
-        struct scsi_cmnd *SCpnt;
-        VOID            *buffer;
-        USHORT           expectingIRQ;
-        }       ADAPTER240I, *PADAPTER240I;
-
-#define HOSTDATA(host) ((PADAPTER240I)&host->hostdata)
-
-static struct   Scsi_Host *PsiHost[6] = {NULL,};  /* One for each IRQ level (10-15) */
-static                  IDENTIFY_DATA   identifyData;
-static                  SETUP                   ChipSetup;
-
-static  USHORT  portAddr[6] = {CHIP_ADRS_0, CHIP_ADRS_1, CHIP_ADRS_2, CHIP_ADRS_3, CHIP_ADRS_4, CHIP_ADRS_5};
-
-/****************************************************************
- *      Name:   WriteData       :LOCAL
- *
- *      Description:    Write data to device.
- *
- *      Parameters:             padapter - Pointer adapter data structure.
- *
- *      Returns:                TRUE if drive does not assert DRQ in time.
- *
- ****************************************************************/
-static int WriteData (PADAPTER240I padapter)
-        {
-        ULONG   timer;
-        USHORT *pports = padapter->ports;
-
-        timer = jiffies + TIMEOUT_DRQ;                                                          // calculate the timeout value
-        do  {
-                if ( inb_p (pports[PORT_STAT_CMD]) & IDE_STATUS_DRQ )
-                        {
-                        outsw (pports[PORT_DATA], padapter->buffer, (USHORT)padapter->ide.ide.ide[2] * 256);
-                        return 0;
-                        }
-                }       while ( time_after(timer, jiffies) );                                                                   // test for timeout
-
-        padapter->ide.ide.ides.cmd = 0;                                                                 // null out the command byte
-        return 1;
-        }
-/****************************************************************
- *      Name:   IdeCmd  :LOCAL
- *
- *      Description:    Process a queued command from the SCSI manager.
- *
- *      Parameters:             padapter - Pointer adapter data structure.
- *
- *      Returns:                Zero if no error or status register contents on error.
- *
- ****************************************************************/
-static UCHAR IdeCmd (PADAPTER240I padapter)
-        {
-        ULONG   timer;
-        USHORT *pports = padapter->ports;
-        UCHAR   status;
-
-        outb_p (padapter->ide.ide.ides.spigot, pports[PORT_SEL_FAIL]);  // select the spigot
-        outb_p (padapter->ide.ide.ide[6], pports[PORT_LBA_24]);                 // select the drive
-        timer = jiffies + TIMEOUT_READY;                                                        // calculate the timeout value
-        do  {
-                status = inb_p (padapter->ports[PORT_STAT_CMD]);
-                if ( status & IDE_STATUS_DRDY )
-                        {
-                        outb_p (padapter->ide.ide.ide[2], pports[PORT_SECTOR_COUNT]);
-                        outb_p (padapter->ide.ide.ide[3], pports[PORT_LBA_0]);
-                        outb_p (padapter->ide.ide.ide[4], pports[PORT_LBA_8]);
-                        outb_p (padapter->ide.ide.ide[5], pports[PORT_LBA_16]);
-                        padapter->expectingIRQ = 1;
-                        outb_p (padapter->ide.ide.ide[7], pports[PORT_STAT_CMD]);
-
-                        if ( padapter->ide.ide.ides.cmd == IDE_CMD_WRITE_MULTIPLE )
-                                return (WriteData (padapter));
-
-                        return 0;
-                        }
-                }       while ( time_after(timer, jiffies) );                                                                   // test for timeout
-
-        padapter->ide.ide.ides.cmd = 0;                                                                 // null out the command byte
-        return status;
-        }
-/****************************************************************
- *      Name:   SetupTransfer   :LOCAL
- *
- *      Description:    Setup a data transfer command.
- *
- *      Parameters:             padapter - Pointer adapter data structure.
- *                                      drive    - Drive/head register upper nibble only.
- *
- *      Returns:                TRUE if no data to transfer.
- *
- ****************************************************************/
-static int SetupTransfer (PADAPTER240I padapter, UCHAR drive)
-        {
-        if ( padapter->sectorCount )
-                {
-                *(ULONG *)padapter->ide.ide.ides.lba = padapter->startSector;
-                padapter->ide.ide.ide[6] |= drive;
-                padapter->ide.ide.ides.sectors = ( padapter->sectorCount > SECTORSXFER ) ? SECTORSXFER : padapter->sectorCount;
-                padapter->sectorCount -= padapter->ide.ide.ides.sectors;        // bump the start and count for next xfer
-                padapter->startSector += padapter->ide.ide.ides.sectors;
-                return 0;
-                }
-        else
-                {
-                padapter->ide.ide.ides.cmd = 0;                                                         // null out the command byte
-                padapter->SCpnt = NULL;
-                return 1;
-                }
-        }
-/****************************************************************
- *      Name:   DecodeError     :LOCAL
- *
- *      Description:    Decode and process device errors.
- *
- *      Parameters:             pshost - Pointer to host data block.
- *                                      status - Status register code.
- *
- *      Returns:                The driver status code.
- *
- ****************************************************************/
-static ULONG DecodeError (struct Scsi_Host *pshost, UCHAR status)
-        {
-        PADAPTER240I    padapter = HOSTDATA(pshost);
-        UCHAR                   error;
-
-        padapter->expectingIRQ = 0;
-        padapter->SCpnt = NULL;
-        if ( status & IDE_STATUS_WRITE_FAULT )
-                {
-                return DID_PARITY << 16;
-                }
-        if ( status & IDE_STATUS_BUSY )
-                return DID_BUS_BUSY << 16;
-
-        error = inb_p (padapter->ports[PORT_ERROR]);
-        DEB(printk ("\npsi240i error register: %x", error));
-        switch ( error )
-                {
-                case IDE_ERROR_AMNF:
-                case IDE_ERROR_TKONF:
-                case IDE_ERROR_ABRT:
-                case IDE_ERROR_IDFN:
-                case IDE_ERROR_UNC:
-                case IDE_ERROR_BBK:
-                default:
-                        return DID_ERROR << 16;
-                }
-        return DID_ERROR << 16;
-        }
-/****************************************************************
- *      Name:   Irq_Handler     :LOCAL
- *
- *      Description:    Interrupt handler.
- *
- *      Parameters:             irq             - Hardware IRQ number.
- *                                      dev_id  -
- *
- *      Returns:                TRUE if drive is not ready in time.
- *
- ****************************************************************/
-static void Irq_Handler (int irq, void *dev_id)
-        {
-        struct Scsi_Host *shost;        // Pointer to host data block
-        PADAPTER240I padapter;          // Pointer to adapter control structure
-        USHORT *pports;                 // I/O port array
-        struct scsi_cmnd *SCpnt;
-        UCHAR status;
-        int z;
-
-        DEB(printk ("\npsi240i received interrupt\n"));
-
-        shost = PsiHost[irq - 10];
-        if ( !shost )
-                panic ("Splunge!");
-
-        padapter = HOSTDATA(shost);
-        pports = padapter->ports;
-        SCpnt = padapter->SCpnt;
-
-        if ( !padapter->expectingIRQ )
-                {
-                DEB(printk ("\npsi240i Unsolicited interrupt\n"));
-                return;
-                }
-        padapter->expectingIRQ = 0;
-
-        status = inb_p (padapter->ports[PORT_STAT_CMD]);                        // read the device status
-        if ( status & (IDE_STATUS_ERROR | IDE_STATUS_WRITE_FAULT) )
-                goto irqerror;
-
-        DEB(printk ("\npsi240i processing interrupt"));
-        switch ( padapter->ide.ide.ides.cmd )                                                   // decide how to handle the interrupt
-                {
-                case IDE_CMD_READ_MULTIPLE:
-                        if ( status & IDE_STATUS_DRQ )
-                                {
-                                insw (pports[PORT_DATA], padapter->buffer, (USHORT)padapter->ide.ide.ides.sectors * 256);
-                                padapter->buffer += padapter->ide.ide.ides.sectors * 512;
-                                if ( SetupTransfer (padapter, padapter->ide.ide.ide[6] & 0xF0) )
-                                        {
-                                        SCpnt->result = DID_OK << 16;
-                                        padapter->SCpnt = NULL;
-                                        SCpnt->scsi_done (SCpnt);
-                                        return;
-                                        }
-                                if ( !(status = IdeCmd (padapter)) )
-                                        return;
-                                }
-                        break;
-
-                case IDE_CMD_WRITE_MULTIPLE:
-                        padapter->buffer += padapter->ide.ide.ides.sectors * 512;
-                        if ( SetupTransfer (padapter, padapter->ide.ide.ide[6] & 0xF0) )
-                                {
-                                SCpnt->result = DID_OK << 16;
-                                padapter->SCpnt = NULL;
-                                SCpnt->scsi_done (SCpnt);
-                                return;
-                                }
-                        if ( !(status = IdeCmd (padapter)) )
-                                return;
-                        break;
-
-                case IDE_COMMAND_IDENTIFY:
-                        {
-                        PINQUIRYDATA    pinquiryData  = SCpnt->request_buffer;
-
-                        if ( status & IDE_STATUS_DRQ )
-                                {
-                                insw (pports[PORT_DATA], &identifyData, sizeof (identifyData) >> 1);
-
-                                memset (pinquiryData, 0, SCpnt->request_bufflen);               // Zero INQUIRY data structure.
-                                pinquiryData->DeviceType = 0;
-                                pinquiryData->Versions = 2;
-                                pinquiryData->AdditionalLength = 35 - 4;
-
-                                // Fill in vendor identification fields.
-                                for ( z = 0;  z < 8;  z += 2 )
-                                        {
-                                        pinquiryData->VendorId[z]         = ((UCHAR *)identifyData.ModelNumber)[z + 1];
-                                        pinquiryData->VendorId[z + 1] = ((UCHAR *)identifyData.ModelNumber)[z];
-                                        }
-
-                                // Initialize unused portion of product id.
-                                for ( z = 0;  z < 4;  z++ )
-                                        pinquiryData->ProductId[12 + z] = ' ';
-
-                                // Move firmware revision from IDENTIFY data to
-                                // product revision in INQUIRY data.
-                                for ( z = 0;  z < 4;  z += 2 )
-                                        {
-                                        pinquiryData->ProductRevisionLevel[z]    = ((UCHAR *)identifyData.FirmwareRevision)[z + 1];
-                                        pinquiryData->ProductRevisionLevel[z + 1] = ((UCHAR *)identifyData.FirmwareRevision)[z];
-                                        }
-
-                                SCpnt->result = DID_OK << 16;
-                                padapter->SCpnt = NULL;
-                                SCpnt->scsi_done (SCpnt);
-                                return;
-                                }
-                        break;
-                        }
-
-                default:
-                        SCpnt->result = DID_OK << 16;
-                        padapter->SCpnt = NULL;
-                        SCpnt->scsi_done (SCpnt);
-                        return;
-                }
-
-irqerror:;
-        DEB(printk ("\npsi240i error  Device Status: %X\n", status));
-        SCpnt->result = DecodeError (shost, status);
-        SCpnt->scsi_done (SCpnt);
-        }
-
-static irqreturn_t do_Irq_Handler (int irq, void *dev_id)
-{
-        unsigned long flags;
-        struct Scsi_Host *dev = dev_id;
-        
-        spin_lock_irqsave(dev->host_lock, flags);
-        Irq_Handler(irq, dev_id);
-        spin_unlock_irqrestore(dev->host_lock, flags);
-        return IRQ_HANDLED;
-}
-
-/****************************************************************
- *      Name:   Psi240i_QueueCommand
- *
- *      Description:    Process a queued command from the SCSI manager.
- *
- *      Parameters:             SCpnt - Pointer to SCSI command structure.
- *                                      done  - Pointer to done function to call.
- *
- *      Returns:                Status code.
- *
- ****************************************************************/
-static int Psi240i_QueueCommand(struct scsi_cmnd *SCpnt,
-                                void (*done)(struct scsi_cmnd *))
-        {
-        UCHAR *cdb = (UCHAR *)SCpnt->cmnd;
-        // Pointer to SCSI CDB
-        PADAPTER240I padapter = HOSTDATA (SCpnt->device->host);
-        // Pointer to adapter control structure
-        POUR_DEVICE pdev = &padapter->device [SCpnt->device->id];
-        // Pointer to device information
-        UCHAR rc;
-        // command return code
-
-        SCpnt->scsi_done = done;
-        padapter->ide.ide.ides.spigot = pdev->spigot;
-        padapter->buffer = SCpnt->request_buffer;
-        if (done)
-                {
-                if ( !pdev->device )
-                        {
-                        SCpnt->result = DID_BAD_TARGET << 16;
-                        done (SCpnt);
-                        return 0;
-                        }
-                }
-        else
-                {
-                printk("psi240i_queuecommand: %02X: done can't be NULL\n", *cdb);
-                return 0;
-                }
-
-        switch ( *cdb )
-                {
-                case SCSIOP_INQUIRY:                                    // inquiry CDB
-                        {
-                        padapter->ide.ide.ide[6] = pdev->byte6;
-                        padapter->ide.ide.ides.cmd = IDE_COMMAND_IDENTIFY;
-                        break;
-                        }
-
-                case SCSIOP_TEST_UNIT_READY:                    // test unit ready CDB
-                        SCpnt->result = DID_OK << 16;
-                        done (SCpnt);
-                        return 0;
-
-                case SCSIOP_READ_CAPACITY:                              // read capctiy CDB
-                        {
-                        PREAD_CAPACITY_DATA     pdata = (PREAD_CAPACITY_DATA)SCpnt->request_buffer;
-
-                        pdata->blksiz = 0x20000;
-                        XANY2SCSI ((UCHAR *)&pdata->blks, pdev->blocks);
-                        SCpnt->result = DID_OK << 16;
-                        done (SCpnt);
-                        return 0;
-                        }
-
-                case SCSIOP_VERIFY:                                             // verify CDB
-                        *(ULONG *)padapter->ide.ide.ides.lba = XSCSI2LONG (&cdb[2]);
-                        padapter->ide.ide.ide[6] |= pdev->byte6;
-                        padapter->ide.ide.ide[2] = (UCHAR)((USHORT)cdb[8] | ((USHORT)cdb[7] << 8));
-                        padapter->ide.ide.ides.cmd = IDE_COMMAND_VERIFY;
-                        break;
-
-                case SCSIOP_READ:                                               // read10 CDB
-                        padapter->startSector = XSCSI2LONG (&cdb[2]);
-                        padapter->sectorCount = (USHORT)cdb[8] | ((USHORT)cdb[7] << 8);
-                        SetupTransfer (padapter, pdev->byte6);
-                        padapter->ide.ide.ides.cmd = IDE_CMD_READ_MULTIPLE;
-                        break;
-
-                case SCSIOP_READ6:                                              // read6  CDB
-                        padapter->startSector = SCSI2LONG (&cdb[1]);
-                        padapter->sectorCount = cdb[4];
-                        SetupTransfer (padapter, pdev->byte6);
-                        padapter->ide.ide.ides.cmd = IDE_CMD_READ_MULTIPLE;
-                        break;
-
-                case SCSIOP_WRITE:                                              // write10 CDB
-                        padapter->startSector = XSCSI2LONG (&cdb[2]);
-                        padapter->sectorCount = (USHORT)cdb[8] | ((USHORT)cdb[7] << 8);
-                        SetupTransfer (padapter, pdev->byte6);
-                        padapter->ide.ide.ides.cmd = IDE_CMD_WRITE_MULTIPLE;
-                        break;
-                case SCSIOP_WRITE6:                                             // write6  CDB
-                        padapter->startSector = SCSI2LONG (&cdb[1]);
-                        padapter->sectorCount = cdb[4];
-                        SetupTransfer (padapter, pdev->byte6);
-                        padapter->ide.ide.ides.cmd = IDE_CMD_WRITE_MULTIPLE;
-                        break;
-
-                default:
-                        DEB (printk ("psi240i_queuecommand: Unsupported command %02X\n", *cdb));
-                        SCpnt->result = DID_ERROR << 16;
-                        done (SCpnt);
-                        return 0;
-                }
-
-        padapter->SCpnt = SCpnt;                                                                        // Save this command data
-
-        rc = IdeCmd (padapter);
-        if ( rc )
-                {
-                padapter->expectingIRQ = 0;
-                DEB (printk ("psi240i_queuecommand: %02X, %02X: Device failed to respond for command\n", *cdb, padapter->ide.ide.ides.cmd));
-                SCpnt->result = DID_ERROR << 16;
-                done (SCpnt);
-                return 0;
-                }
-        DEB (printk("psi240i_queuecommand: %02X, %02X now waiting for interrupt ", *cdb, padapter->ide.ide.ides.cmd));
-        return 0;
-        }
-
-/***************************************************************************
- *      Name:                   ReadChipMemory
- *
- *      Description:    Read information from controller memory.
- *
- *      Parameters:             psetup  - Pointer to memory image of setup information.
- *                                      base    - base address of memory.
- *                                      length  - lenght of data space in bytes.
- *                                      port    - I/O address of data port.
- *
- *      Returns:                Nothing.
- *
- **************************************************************************/
-static void ReadChipMemory (void *pdata, USHORT base, USHORT length, USHORT port)
-        {
-        USHORT  z, zz;
-        UCHAR   *pd = (UCHAR *)pdata;
-        outb_p (SEL_NONE, port + REG_SEL_FAIL);                         // setup data port
-        zz = 0;
-        while ( zz < length )
-                {
-                outw_p (base, port + REG_ADDRESS);                              // setup address
-
-                for ( z = 0;  z < 8;  z++ )
-                        {
-                        if ( (zz + z) < length )
-                        *pd++ = inb_p (port + z);       // read data byte
-                        }
-                zz += 8;
-                base += 8;
-                }
-        }
-/****************************************************************
- *      Name:   Psi240i_Detect
- *
- *      Description:    Detect and initialize our boards.
- *
- *      Parameters:             tpnt - Pointer to SCSI host template structure.
- *
- *      Returns:                Number of adapters found.
- *
- ****************************************************************/
-static int Psi240i_Detect (struct scsi_host_template *tpnt)
-        {
-        int                                     board;
-        int                                     count = 0;
-        int                                     unit;
-        int                                     z;
-        USHORT                          port, port_range = 16;
-        CHIP_CONFIG_N           chipConfig;
-        CHIP_DEVICE_N           chipDevice[8];
-        struct Scsi_Host   *pshost;
-
-        for ( board = 0;  board < MAXBOARDS;  board++ )                                 // scan for I/O ports
-                {
-                pshost = NULL;
-                port = portAddr[board];                                                         // get base address to test
-                if ( !request_region (port, port_range, "psi240i") )
-                        continue;
-                if ( inb_p (port + REG_FAIL) != CHIP_ID )                       // do the first test for likley hood that it is us
-                        goto host_init_failure;
-                outb_p (SEL_NONE, port + REG_SEL_FAIL);                         // setup EEPROM/RAM access
-                outw (0, port + REG_ADDRESS);                                           // setup EEPROM address zero
-                if ( inb_p (port) != 0x55 )                                                     // test 1st byte
-                        goto host_init_failure;                                                                 //   nope
-                if ( inb_p (port + 1) != 0xAA )                                         // test 2nd byte
-                        goto host_init_failure;                                                         //   nope
-
-                // at this point our board is found and can be accessed.  Now we need to initialize
-                // our informatation and register with the kernel.
-
-
-                ReadChipMemory (&chipConfig, CHIP_CONFIG, sizeof (chipConfig), port);
-                ReadChipMemory (&chipDevice, CHIP_DEVICE, sizeof (chipDevice), port);
-                ReadChipMemory (&ChipSetup, CHIP_EEPROM_DATA, sizeof (ChipSetup), port);
-
-                if ( !chipConfig.numDrives )                                            // if no devices on this board
-                        goto host_init_failure;
-
-                pshost = scsi_register (tpnt, sizeof(ADAPTER240I));
-                if(pshost == NULL)
-                        goto host_init_failure; 
-
-                PsiHost[chipConfig.irq - 10] = pshost;
-                pshost->unique_id = port;
-                pshost->io_port = port;
-                pshost->n_io_port = 16;  /* Number of bytes of I/O space used */
-                pshost->irq = chipConfig.irq;
-
-                for ( z = 0;  z < 11;  z++ )                                            // build regester address array
-                        HOSTDATA(pshost)->ports[z] = port + z;
-                HOSTDATA(pshost)->ports[11] = port + REG_FAIL;
-                HOSTDATA(pshost)->ports[12] = port + REG_ALT_STAT;
-                DEB (printk ("\nPorts ="));
-                DEB (for (z=0;z<13;z++) printk(" %#04X",HOSTDATA(pshost)->ports[z]););
-
-                for ( z = 0;  z < chipConfig.numDrives;  ++z )
-                        {
-                        unit = chipDevice[z].channel & 0x0F;
-                        HOSTDATA(pshost)->device[unit].device    = ChipSetup.setupDevice[unit].device;
-                        HOSTDATA(pshost)->device[unit].byte6     = (UCHAR)(((unit & 1) << 4) | 0xE0);
-                        HOSTDATA(pshost)->device[unit].spigot    = (UCHAR)(1 << (unit >> 1));
-                        HOSTDATA(pshost)->device[unit].sectors   = ChipSetup.setupDevice[unit].sectors;
-                        HOSTDATA(pshost)->device[unit].heads     = ChipSetup.setupDevice[unit].heads;
-                        HOSTDATA(pshost)->device[unit].cylinders = ChipSetup.setupDevice[unit].cylinders;
-                        HOSTDATA(pshost)->device[unit].blocks    = ChipSetup.setupDevice[unit].blocks;
-                        DEB (printk ("\nHOSTDATA->device    = %X", HOSTDATA(pshost)->device[unit].device));
-                        DEB (printk ("\n          byte6     = %X", HOSTDATA(pshost)->device[unit].byte6));
-                        DEB (printk ("\n          spigot    = %X", HOSTDATA(pshost)->device[unit].spigot));
-                        DEB (printk ("\n          sectors   = %X", HOSTDATA(pshost)->device[unit].sectors));
-                        DEB (printk ("\n          heads     = %X", HOSTDATA(pshost)->device[unit].heads));
-                        DEB (printk ("\n          cylinders = %X", HOSTDATA(pshost)->device[unit].cylinders));
-                        DEB (printk ("\n          blocks    = %lX", HOSTDATA(pshost)->device[unit].blocks));
-                        }
-
-                if ( request_irq (chipConfig.irq, do_Irq_Handler, 0, "psi240i", pshost) == 0 ) 
-                        {
-                        printk("\nPSI-240I EIDE CONTROLLER: at I/O = %x  IRQ = %d\n", port, chipConfig.irq);
-                        printk("(C) 1997 Perceptive Solutions, Inc. All rights reserved\n\n");
-                        count++;
-                        continue;
-                        }
-
-                printk ("Unable to allocate IRQ for PSI-240I controller.\n");
-           
-host_init_failure:
-                
-                release_region (port, port_range);
-                if (pshost)
-                        scsi_unregister (pshost);
-
-                }
-        return count;
-        }
-
-static int Psi240i_Release(struct Scsi_Host *shost)
-{
-        if (shost->irq)
-                free_irq(shost->irq, NULL);
-        if (shost->io_port && shost->n_io_port)
-                release_region(shost->io_port, shost->n_io_port);
-        scsi_unregister(shost);
-        return 0;
-}
-
-/****************************************************************
- *      Name:   Psi240i_BiosParam
- *
- *      Description:    Process the biosparam request from the SCSI manager to
- *                                      return C/H/S data.
- *
- *      Parameters:             disk - Pointer to SCSI disk structure.
- *                                      dev      - Major/minor number from kernel.
- *                                      geom - Pointer to integer array to place geometry data.
- *
- *      Returns:                zero.
- *
- ****************************************************************/
-static int Psi240i_BiosParam (struct scsi_device *sdev, struct block_device *dev,
-                sector_t capacity, int geom[])
-        {
-        POUR_DEVICE     pdev;
-
-        pdev = &(HOSTDATA(sdev->host)->device[sdev_id(sdev)]);
-
-        geom[0] = pdev->heads;
-        geom[1] = pdev->sectors;
-        geom[2] = pdev->cylinders;
-        return 0;
-        }
-
-MODULE_LICENSE("GPL");
-
-static struct scsi_host_template driver_template = {
-        .proc_name              = "psi240i", 
-        .name                   = "PSI-240I EIDE Disk Controller",
-        .detect                 = Psi240i_Detect,
-        .release                = Psi240i_Release,
-        .queuecommand           = Psi240i_QueueCommand,
-        .bios_param             = Psi240i_BiosParam,
-        .can_queue              = 1,
-        .this_id                = -1,
-        .sg_tablesize           = SG_NONE,
-        .cmd_per_lun            = 1, 
-        .use_clustering         = DISABLE_CLUSTERING,
-};
-#include "scsi_module.c"
diff --git a/drivers/scsi/psi240i.h b/drivers/scsi/psi240i.h
deleted file mode 100644
index 21ebb9214004..000000000000
--- a/drivers/scsi/psi240i.h
+++ /dev/null
@@ -1,315 +0,0 @@
-/*+M*************************************************************************
- * Perceptive Solutions, Inc. PSI-240I device driver proc support for Linux.
- *
- * Copyright (c) 1997 Perceptive Solutions, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- *      File Name:              psi240i.h
- *
- *      Description:    Header file for the SCSI driver for the PSI240I
- *                                      EIDE interface card.
- *
- *-M*************************************************************************/
-#ifndef _PSI240I_H
-#define _PSI240I_H
-
-#include <linux/types.h>
-
-#ifndef PSI_EIDE_SCSIOP
-#define PSI_EIDE_SCSIOP 1
-
-/************************************************/
-/*              Some defines that we like                               */
-/************************************************/
-#define CHAR            char
-#define UCHAR           unsigned char
-#define SHORT           short
-#define USHORT          unsigned short
-#define BOOL            unsigned short
-#define LONG            long
-#define ULONG           unsigned long
-#define VOID            void
-
-/************************************************/
-/*              Timeout konstants                                               */
-/************************************************/
-#define TIMEOUT_READY                           10              // 100 mSec
-#define TIMEOUT_DRQ                                     40              // 400 mSec
-
-/************************************************/
-/*              Misc. macros                                                    */
-/************************************************/
-#define ANY2SCSI(up, p)                                 \
-((UCHAR *)up)[0] = (((ULONG)(p)) >> 8); \
-((UCHAR *)up)[1] = ((ULONG)(p));
-
-#define SCSI2LONG(up)                                   \
-( (((long)*(((UCHAR *)up))) << 16)              \
-+ (((long)(((UCHAR *)up)[1])) << 8)             \
-+ ((long)(((UCHAR *)up)[2])) )
-
-#define XANY2SCSI(up, p)                                \
-((UCHAR *)up)[0] = ((long)(p)) >> 24;   \
-((UCHAR *)up)[1] = ((long)(p)) >> 16;   \
-((UCHAR *)up)[2] = ((long)(p)) >> 8;    \
-((UCHAR *)up)[3] = ((long)(p));
-
-#define XSCSI2LONG(up)                                  \
-( (((long)(((UCHAR *)up)[0])) << 24)    \
-+ (((long)(((UCHAR *)up)[1])) << 16)    \
-+ (((long)(((UCHAR *)up)[2])) <<  8)    \
-+ ((long)(((UCHAR *)up)[3])) )
-
-/************************************************/
-/*              SCSI CDB operation codes                                */
-/************************************************/
-#define SCSIOP_TEST_UNIT_READY          0x00
-#define SCSIOP_REZERO_UNIT                      0x01
-#define SCSIOP_REWIND                           0x01
-#define SCSIOP_REQUEST_BLOCK_ADDR       0x02
-#define SCSIOP_REQUEST_SENSE            0x03
-#define SCSIOP_FORMAT_UNIT                      0x04
-#define SCSIOP_READ_BLOCK_LIMITS        0x05
-#define SCSIOP_REASSIGN_BLOCKS          0x07
-#define SCSIOP_READ6                            0x08
-#define SCSIOP_RECEIVE                          0x08
-#define SCSIOP_WRITE6                           0x0A
-#define SCSIOP_PRINT                            0x0A
-#define SCSIOP_SEND                                     0x0A
-#define SCSIOP_SEEK6                            0x0B
-#define SCSIOP_TRACK_SELECT                     0x0B
-#define SCSIOP_SLEW_PRINT                       0x0B
-#define SCSIOP_SEEK_BLOCK                       0x0C
-#define SCSIOP_PARTITION                        0x0D
-#define SCSIOP_READ_REVERSE                     0x0F
-#define SCSIOP_WRITE_FILEMARKS          0x10
-#define SCSIOP_FLUSH_BUFFER                     0x10
-#define SCSIOP_SPACE                            0x11
-#define SCSIOP_INQUIRY                          0x12
-#define SCSIOP_VERIFY6                          0x13
-#define SCSIOP_RECOVER_BUF_DATA         0x14
-#define SCSIOP_MODE_SELECT                      0x15
-#define SCSIOP_RESERVE_UNIT                     0x16
-#define SCSIOP_RELEASE_UNIT                     0x17
-#define SCSIOP_COPY                                     0x18
-#define SCSIOP_ERASE                            0x19
-#define SCSIOP_MODE_SENSE                       0x1A
-#define SCSIOP_START_STOP_UNIT          0x1B
-#define SCSIOP_STOP_PRINT                       0x1B
-#define SCSIOP_LOAD_UNLOAD                      0x1B
-#define SCSIOP_RECEIVE_DIAGNOSTIC       0x1C
-#define SCSIOP_SEND_DIAGNOSTIC          0x1D
-#define SCSIOP_MEDIUM_REMOVAL           0x1E
-#define SCSIOP_READ_CAPACITY            0x25
-#define SCSIOP_READ                                     0x28
-#define SCSIOP_WRITE                            0x2A
-#define SCSIOP_SEEK                                     0x2B
-#define SCSIOP_LOCATE                           0x2B
-#define SCSIOP_WRITE_VERIFY                     0x2E
-#define SCSIOP_VERIFY                           0x2F
-#define SCSIOP_SEARCH_DATA_HIGH         0x30
-#define SCSIOP_SEARCH_DATA_EQUAL        0x31
-#define SCSIOP_SEARCH_DATA_LOW          0x32
-#define SCSIOP_SET_LIMITS                       0x33
-#define SCSIOP_READ_POSITION            0x34
-#define SCSIOP_SYNCHRONIZE_CACHE        0x35
-#define SCSIOP_COMPARE                          0x39
-#define SCSIOP_COPY_COMPARE                     0x3A
-#define SCSIOP_WRITE_DATA_BUFF          0x3B
-#define SCSIOP_READ_DATA_BUFF           0x3C
-#define SCSIOP_CHANGE_DEFINITION        0x40
-#define SCSIOP_READ_SUB_CHANNEL         0x42
-#define SCSIOP_READ_TOC                         0x43
-#define SCSIOP_READ_HEADER                      0x44
-#define SCSIOP_PLAY_AUDIO                       0x45
-#define SCSIOP_PLAY_AUDIO_MSF           0x47
-#define SCSIOP_PLAY_TRACK_INDEX         0x48
-#define SCSIOP_PLAY_TRACK_RELATIVE      0x49
-#define SCSIOP_PAUSE_RESUME                     0x4B
-#define SCSIOP_LOG_SELECT                       0x4C
-#define SCSIOP_LOG_SENSE                        0x4D
-#define SCSIOP_MODE_SELECT10            0x55
-#define SCSIOP_MODE_SENSE10                     0x5A
-#define SCSIOP_LOAD_UNLOAD_SLOT         0xA6
-#define SCSIOP_MECHANISM_STATUS         0xBD
-#define SCSIOP_READ_CD                          0xBE
-
-// IDE command definitions
-#define IDE_COMMAND_ATAPI_RESET         0x08
-#define IDE_COMMAND_READ                        0x20
-#define IDE_COMMAND_WRITE                       0x30
-#define IDE_COMMAND_RECALIBRATE         0x10
-#define IDE_COMMAND_SEEK                        0x70
-#define IDE_COMMAND_SET_PARAMETERS      0x91
-#define IDE_COMMAND_VERIFY                      0x40
-#define IDE_COMMAND_ATAPI_PACKET        0xA0
-#define IDE_COMMAND_ATAPI_IDENTIFY      0xA1
-#define IDE_CMD_READ_MULTIPLE           0xC4
-#define IDE_CMD_WRITE_MULTIPLE          0xC5
-#define IDE_CMD_SET_MULTIPLE            0xC6
-#define IDE_COMMAND_WRITE_DMA           0xCA
-#define IDE_COMMAND_READ_DMA            0xC8
-#define IDE_COMMAND_IDENTIFY            0xEC
-
-// IDE status definitions
-#define IDE_STATUS_ERROR                        0x01
-#define IDE_STATUS_INDEX                        0x02
-#define IDE_STATUS_CORRECTED_ERROR      0x04
-#define IDE_STATUS_DRQ                          0x08
-#define IDE_STATUS_DSC                          0x10
-#define IDE_STATUS_WRITE_FAULT          0x20
-#define IDE_STATUS_DRDY                         0x40
-#define IDE_STATUS_BUSY                         0x80
-
-// IDE error definitions
-#define IDE_ERROR_AMNF                          0x01
-#define IDE_ERROR_TKONF                         0x02
-#define IDE_ERROR_ABRT                          0x04
-#define IDE_ERROR_MCR                           0x08
-#define IDE_ERROR_IDFN                          0x10
-#define IDE_ERROR_MC                            0x20
-#define IDE_ERROR_UNC                           0x40
-#define IDE_ERROR_BBK                           0x80
-
-//      IDE interface structure
-typedef struct _IDE_STRUCT
-        {
-        union
-                {
-                UCHAR   ide[9];
-                struct
-                        {
-                        USHORT  data;
-                        UCHAR   sectors;
-                        UCHAR   lba[4];
-                        UCHAR   cmd;
-                        UCHAR   spigot;
-                        }       ides;
-                } ide;
-        }       IDE_STRUCT;
-
-// SCSI read capacity structure
-typedef struct _READ_CAPACITY_DATA
-        {
-        ULONG blks;                             /* total blocks (converted to little endian) */
-        ULONG blksiz;                   /* size of each (converted to little endian) */
-        }       READ_CAPACITY_DATA, *PREAD_CAPACITY_DATA;
-
-// SCSI inquiry data
-#ifndef HOSTS_C
-
-typedef struct _INQUIRYDATA
-        {
-        UCHAR DeviceType                        :5;
-        UCHAR DeviceTypeQualifier       :3;
-        UCHAR DeviceTypeModifier        :7;
-        UCHAR RemovableMedia            :1;
-    UCHAR Versions;
-    UCHAR ResponseDataFormat;
-    UCHAR AdditionalLength;
-    UCHAR Reserved[2];
-        UCHAR SoftReset                         :1;
-        UCHAR CommandQueue                      :1;
-        UCHAR Reserved2                         :1;
-        UCHAR LinkedCommands            :1;
-        UCHAR Synchronous                       :1;
-        UCHAR Wide16Bit                         :1;
-        UCHAR Wide32Bit                         :1;
-        UCHAR RelativeAddressing        :1;
-    UCHAR VendorId[8];
-    UCHAR ProductId[16];
-    UCHAR ProductRevisionLevel[4];
-    UCHAR VendorSpecific[20];
-    UCHAR Reserved3[40];
-        }       INQUIRYDATA, *PINQUIRYDATA;
-#endif
-
-// IDE IDENTIFY data
-typedef struct _IDENTIFY_DATA
-        {
-    USHORT GeneralConfiguration;            // 00
-    USHORT NumberOfCylinders;               // 02
-    USHORT Reserved1;                       // 04
-    USHORT NumberOfHeads;                   // 06
-    USHORT UnformattedBytesPerTrack;        // 08
-    USHORT UnformattedBytesPerSector;       // 0A
-    USHORT SectorsPerTrack;                 // 0C
-    USHORT VendorUnique1[3];                // 0E
-    USHORT SerialNumber[10];                // 14
-    USHORT BufferType;                      // 28
-    USHORT BufferSectorSize;                // 2A
-    USHORT NumberOfEccBytes;                // 2C
-    USHORT FirmwareRevision[4];             // 2E
-    USHORT ModelNumber[20];                 // 36
-    UCHAR  MaximumBlockTransfer;            // 5E
-    UCHAR  VendorUnique2;                   // 5F
-    USHORT DoubleWordIo;                    // 60
-    USHORT Capabilities;                    // 62
-    USHORT Reserved2;                       // 64
-    UCHAR  VendorUnique3;                   // 66
-    UCHAR  PioCycleTimingMode;              // 67
-    UCHAR  VendorUnique4;                   // 68
-    UCHAR  DmaCycleTimingMode;              // 69
-    USHORT TranslationFieldsValid:1;        // 6A
-    USHORT Reserved3:15;
-    USHORT NumberOfCurrentCylinders;        // 6C
-    USHORT NumberOfCurrentHeads;            // 6E
-    USHORT CurrentSectorsPerTrack;          // 70
-    ULONG  CurrentSectorCapacity;           // 72
-    USHORT Reserved4[197];                  // 76
-        }       IDENTIFY_DATA, *PIDENTIFY_DATA;
-
-// Identify data without the Reserved4.
-typedef struct _IDENTIFY_DATA2 {
-    USHORT GeneralConfiguration;            // 00
-    USHORT NumberOfCylinders;               // 02
-    USHORT Reserved1;                       // 04
-    USHORT NumberOfHeads;                   // 06
-    USHORT UnformattedBytesPerTrack;        // 08
-    USHORT UnformattedBytesPerSector;       // 0A
-    USHORT SectorsPerTrack;                 // 0C
-    USHORT VendorUnique1[3];                // 0E
-    USHORT SerialNumber[10];                // 14
-    USHORT BufferType;                      // 28
-    USHORT BufferSectorSize;                // 2A
-    USHORT NumberOfEccBytes;                // 2C
-    USHORT FirmwareRevision[4];             // 2E
-    USHORT ModelNumber[20];                 // 36
-    UCHAR  MaximumBlockTransfer;            // 5E
-    UCHAR  VendorUnique2;                   // 5F
-    USHORT DoubleWordIo;                    // 60
-    USHORT Capabilities;                    // 62
-    USHORT Reserved2;                       // 64
-    UCHAR  VendorUnique3;                   // 66
-    UCHAR  PioCycleTimingMode;              // 67
-    UCHAR  VendorUnique4;                   // 68
-    UCHAR  DmaCycleTimingMode;              // 69
-        USHORT TranslationFieldsValid:1;        // 6A
-    USHORT Reserved3:15;
-    USHORT NumberOfCurrentCylinders;        // 6C
-    USHORT NumberOfCurrentHeads;            // 6E
-    USHORT CurrentSectorsPerTrack;          // 70
-    ULONG  CurrentSectorCapacity;           // 72
-        }       IDENTIFY_DATA2, *PIDENTIFY_DATA2;
-
-#endif  // PSI_EIDE_SCSIOP
-
-// function prototypes
-int Psi240i_Command(struct scsi_cmnd *SCpnt);
-int Psi240i_Abort(struct scsi_cmnd *SCpnt);
-int Psi240i_Reset(struct scsi_cmnd *SCpnt, unsigned int flags);
-#endif
diff --git a/drivers/scsi/psi_chip.h b/drivers/scsi/psi_chip.h
deleted file mode 100644
index 224cf8f64c97..000000000000
--- a/drivers/scsi/psi_chip.h
+++ /dev/null
@@ -1,195 +0,0 @@
-/*+M*************************************************************************
- * Perceptive Solutions, Inc. PSI-240I device driver proc support for Linux.
- *
- * Copyright (c) 1997 Perceptive Solutions, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- *      File Name:      psi_chip.h
- *
- *      Description:    This file contains the interface defines and
- *                                      error codes.
- *
- *-M*************************************************************************/
-#ifndef PSI_CHIP
-#define PSI_CHIP
-
-/************************************************/
-/*              Misc konstants                                                  */
-/************************************************/
-#define CHIP_MAXDRIVES                  8
-
-/************************************************/
-/*              Chip I/O addresses                                              */
-/************************************************/
-#define CHIP_ADRS_0                             0x0130
-#define CHIP_ADRS_1                             0x0150
-#define CHIP_ADRS_2                             0x0190
-#define CHIP_ADRS_3                             0x0210
-#define CHIP_ADRS_4                             0x0230
-#define CHIP_ADRS_5                             0x0250
-
-/************************************************/
-/*              EEPROM locations                */
-/************************************************/
-#define CHIP_EEPROM_BIOS                0x0000          // BIOS base address
-#define CHIP_EEPROM_DATA                0x2000          // SETUP data base address
-#define CHIP_EEPROM_FACTORY             0x2400          // FACTORY data base address
-#define CHIP_EEPROM_SETUP               0x3000          // SETUP PROGRAM base address
-
-#define CHIP_EEPROM_SIZE                32768U          // size of the entire EEPROM
-#define CHIP_EEPROM_BIOS_SIZE   8192            // size of the BIOS in bytes
-#define CHIP_EEPROM_DATA_SIZE   4096            // size of factory, setup, log data block in bytes
-#define CHIP_EEPROM_SETUP_SIZE  20480U          // size of the setup program in bytes
-
-/************************************************/
-/*              Chip Interrupts                                                 */
-/************************************************/
-#define CHIP_IRQ_10                             0x72
-#define CHIP_IRQ_11                             0x73
-#define CHIP_IRQ_12                             0x74
-
-/************************************************/
-/*              Chip Setup addresses            */
-/************************************************/
-#define CHIP_SETUP_BASE                 0x0000C000L
-
-/************************************************/
-/*              Chip Register address offsets   */
-/************************************************/
-#define REG_DATA                                0x00
-#define REG_ERROR                               0x01
-#define REG_SECTOR_COUNT                0x02
-#define REG_LBA_0                               0x03
-#define REG_LBA_8                               0x04
-#define REG_LBA_16                              0x05
-#define REG_LBA_24                              0x06
-#define REG_STAT_CMD                    0x07
-#define REG_SEL_FAIL                    0x08
-#define REG_IRQ_STATUS                  0x09
-#define REG_ADDRESS                             0x0A
-#define REG_FAIL                                0x0C
-#define REG_ALT_STAT                    0x0E
-#define REG_DRIVE_ADRS                  0x0F
-
-/************************************************/
-/*              Chip RAM locations              */
-/************************************************/
-#define CHIP_DEVICE                             0x8000
-#define CHIP_DEVICE_0                   0x8000
-#define CHIP_DEVICE_1                   0x8008
-#define CHIP_DEVICE_2                   0x8010
-#define CHIP_DEVICE_3                   0x8018
-#define CHIP_DEVICE_4                   0x8020
-#define CHIP_DEVICE_5                   0x8028
-#define CHIP_DEVICE_6                   0x8030
-#define CHIP_DEVICE_7                   0x8038
-typedef struct
-        {
-        UCHAR   channel;                // channel of this device (0-8).
-        UCHAR   spt;                    // Sectors Per Track.
-        ULONG   spc;                    // Sectors Per Cylinder.
-        }       CHIP_DEVICE_N;
-
-#define CHIP_CONFIG                             0x8100          // address of boards configuration.
-typedef struct
-        {
-        UCHAR           irq;                    // interrupt request channel number
-        UCHAR           numDrives;              // Number of accessible drives
-        UCHAR           fastFormat;             // Boolean for fast format enable
-        }       CHIP_CONFIG_N;
-
-#define CHIP_MAP                                0x8108          // eight byte device type map.
-
-
-#define CHIP_RAID                               0x8120          // array of RAID signature structures and LBA
-#define CHIP_RAID_1                             0x8120
-#define CHIP_RAID_2                             0x8130
-#define CHIP_RAID_3                             0x8140
-#define CHIP_RAID_4                             0x8150
-
-/************************************************/
-/*              Chip Register Masks             */
-/************************************************/
-#define CHIP_ID                                 0x7B
-#define SEL_RAM                                 0x8000
-#define MASK_FAIL                               0x80
-
-/************************************************/
-/*              Chip cable select bits          */
-/************************************************/
-#define SECTORSXFER                             8
-
-/************************************************/
-/*              Chip cable select bits          */
-/************************************************/
-#define SEL_NONE                                0x00
-#define SEL_1                                   0x01
-#define SEL_2                                   0x02
-#define SEL_3                                   0x04
-#define SEL_4                                   0x08
-
-/************************************************/
-/*              Programmable Interrupt Controller*/
-/************************************************/
-#define PIC1                                    0x20            // first 8259 base port address
-#define PIC2                                    0xA0            // second 8259 base port address
-#define INT_OCW1                                1                       // Operation Control Word 1: IRQ mask
-#define EOI                                             0x20            // non-specific end-of-interrupt
-
-/************************************************/
-/*              Device/Geometry controls                                */
-/************************************************/
-#define GEOMETRY_NONE                   0x0                     // No device
-#define GEOMETRY_AUTO                   0x1                     // Geometry set automatically
-#define GEOMETRY_USER                   0x2                     // User supplied geometry
-
-#define DEVICE_NONE                             0x0                     // No device present
-#define DEVICE_INACTIVE                 0x1                     // device present but not registered active
-#define DEVICE_ATAPI                    0x2                     // ATAPI device (CD_ROM, Tape, Etc...)
-#define DEVICE_DASD_NONLBA              0x3                     // Non LBA incompatible device
-#define DEVICE_DASD_LBA                 0x4                     // LBA compatible device
-
-/************************************************/
-/*              Setup Structure Definitions     */
-/************************************************/
-typedef struct                                                  // device setup parameters
-        {
-        UCHAR                   geometryControl;        // geometry control flags
-        UCHAR                   device;                         // device code
-        USHORT                  sectors;                        // number of sectors per track
-        USHORT                  heads;                          // number of heads
-        USHORT                  cylinders;                      // number of cylinders for this device
-        ULONG                   blocks;                         // number of blocks on device
-        USHORT                  spare1;
-        USHORT                  spare2;
-        } SETUP_DEVICE, *PSETUP_DEVICE;
-
-typedef struct          // master setup structure
-        {
-        USHORT                  startupDelay;
-        USHORT                  promptBIOS;
-        USHORT                  fastFormat;
-        USHORT                  spare2;
-        USHORT                  spare3;
-        USHORT                  spare4;
-        USHORT                  spare5;
-        USHORT                  spare6;
-        SETUP_DEVICE    setupDevice[8];
-        }       SETUP, *PSETUP;
-
-#endif
-
diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c
index 288640756099..c94906abfee3 100644
--- a/drivers/scsi/qla1280.c
+++ b/drivers/scsi/qla1280.c
@@ -528,7 +528,7 @@ __setup("qla1280=", qla1280_setup);
 #define CMD_CDBLEN(Cmnd)        Cmnd->cmd_len
 #define CMD_CDBP(Cmnd)          Cmnd->cmnd
 #define CMD_SNSP(Cmnd)          Cmnd->sense_buffer
-#define CMD_SNSLEN(Cmnd)        sizeof(Cmnd->sense_buffer)
+#define CMD_SNSLEN(Cmnd)        SCSI_SENSE_BUFFERSIZE
 #define CMD_RESULT(Cmnd)        Cmnd->result
 #define CMD_HANDLE(Cmnd)        Cmnd->host_scribble
 #define CMD_REQUEST(Cmnd)       Cmnd->request->cmd
@@ -3715,7 +3715,7 @@ qla1280_status_entry(struct scsi_qla_host *ha, struct response *pkt,
                         } else
                                 sense_sz = 0;
                         memset(cmd->sense_buffer + sense_sz, 0,
-                               sizeof(cmd->sense_buffer) - sense_sz);
+                               SCSI_SENSE_BUFFERSIZE - sense_sz);
 
                         dprintk(2, "qla1280_status_entry: Check "
                                 "condition Sense data, b %i, t %i, "
diff --git a/drivers/scsi/qla2xxx/Makefile b/drivers/scsi/qla2xxx/Makefile
index 71ddb5db4944..c51fd1f86639 100644
--- a/drivers/scsi/qla2xxx/Makefile
+++ b/drivers/scsi/qla2xxx/Makefile
@@ -1,4 +1,4 @@
 qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \
-                qla_dbg.o qla_sup.o qla_attr.o qla_mid.o
+                qla_dbg.o qla_sup.o qla_attr.o qla_mid.o qla_dfs.o
 
 obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index fb388b8c07cf..adf97320574b 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -9,7 +9,7 @@
 #include <linux/kthread.h>
 #include <linux/vmalloc.h>
 
-int qla24xx_vport_disable(struct fc_vport *, bool);
+static int qla24xx_vport_disable(struct fc_vport *, bool);
 
 /* SYSFS attributes --------------------------------------------------------- */
 
@@ -958,7 +958,7 @@ qla2x00_issue_lip(struct Scsi_Host *shost)
 {
         scsi_qla_host_t *ha = shost_priv(shost);
 
-        set_bit(LOOP_RESET_NEEDED, &ha->dpc_flags);
+        qla2x00_loop_reset(ha);
         return 0;
 }
 
@@ -967,35 +967,51 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
 {
         scsi_qla_host_t *ha = shost_priv(shost);
         int rval;
-        uint16_t mb_stat[1];
-        link_stat_t stat_buf;
+        struct link_statistics *stats;
+        dma_addr_t stats_dma;
         struct fc_host_statistics *pfc_host_stat;
 
-        rval = QLA_FUNCTION_FAILED;
         pfc_host_stat = &ha->fc_host_stat;
         memset(pfc_host_stat, -1, sizeof(struct fc_host_statistics));
 
+        stats = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &stats_dma);
+        if (stats == NULL) {
+                DEBUG2_3_11(printk("%s(%ld): Failed to allocate memory.\n",
+                    __func__, ha->host_no));
+                goto done;
+        }
+        memset(stats, 0, DMA_POOL_SIZE);
+
+        rval = QLA_FUNCTION_FAILED;
         if (IS_FWI2_CAPABLE(ha)) {
-                rval = qla24xx_get_isp_stats(ha, (uint32_t *)&stat_buf,
-                    sizeof(stat_buf) / 4, mb_stat);
+                rval = qla24xx_get_isp_stats(ha, stats, stats_dma);
         } else if (atomic_read(&ha->loop_state) == LOOP_READY &&
                     !test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) &&
                     !test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) &&
                     !ha->dpc_active) {
                 /* Must be in a 'READY' state for statistics retrieval. */
-                rval = qla2x00_get_link_status(ha, ha->loop_id, &stat_buf,
-                    mb_stat);
+                rval = qla2x00_get_link_status(ha, ha->loop_id, stats,
+                    stats_dma);
         }
 
         if (rval != QLA_SUCCESS)
-                goto done;
+                goto done_free;
+
+        pfc_host_stat->link_failure_count = stats->link_fail_cnt;
+        pfc_host_stat->loss_of_sync_count = stats->loss_sync_cnt;
+        pfc_host_stat->loss_of_signal_count = stats->loss_sig_cnt;
+        pfc_host_stat->prim_seq_protocol_err_count = stats->prim_seq_err_cnt;
+        pfc_host_stat->invalid_tx_word_count = stats->inval_xmit_word_cnt;
+        pfc_host_stat->invalid_crc_count = stats->inval_crc_cnt;
+        if (IS_FWI2_CAPABLE(ha)) {
+                pfc_host_stat->tx_frames = stats->tx_frames;
+                pfc_host_stat->rx_frames = stats->rx_frames;
+                pfc_host_stat->dumped_frames = stats->dumped_frames;
+                pfc_host_stat->nos_count = stats->nos_rcvd;
+        }
 
-        pfc_host_stat->link_failure_count = stat_buf.link_fail_cnt;
-        pfc_host_stat->loss_of_sync_count = stat_buf.loss_sync_cnt;
-        pfc_host_stat->loss_of_signal_count = stat_buf.loss_sig_cnt;
-        pfc_host_stat->prim_seq_protocol_err_count = stat_buf.prim_seq_err_cnt;
-        pfc_host_stat->invalid_tx_word_count = stat_buf.inval_xmit_word_cnt;
-        pfc_host_stat->invalid_crc_count = stat_buf.inval_crc_cnt;
+done_free:
+        dma_pool_free(ha->s_dma_pool, stats, stats_dma);
 done:
         return pfc_host_stat;
 }
@@ -1113,7 +1129,7 @@ vport_create_failed_2:
         return FC_VPORT_FAILED;
 }
 
-int
+static int
 qla24xx_vport_delete(struct fc_vport *fc_vport)
 {
         scsi_qla_host_t *ha = shost_priv(fc_vport->shost);
@@ -1124,7 +1140,7 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
 
         down(&ha->vport_sem);
         ha->cur_vport_count--;
-        clear_bit(vha->vp_idx, (unsigned long *)ha->vp_idx_map);
+        clear_bit(vha->vp_idx, ha->vp_idx_map);
         up(&ha->vport_sem);
 
         kfree(vha->node_name);
@@ -1146,7 +1162,7 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
         return 0;
 }
 
-int
+static int
 qla24xx_vport_disable(struct fc_vport *fc_vport, bool disable)
 {
         scsi_qla_host_t *vha = fc_vport->dd_data;
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c
index eaa04dabcdf6..d88e98c476b0 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -1051,6 +1051,7 @@ qla25xx_fw_dump(scsi_qla_host_t *ha, int hardware_locked)
         struct qla25xx_fw_dump *fw;
         uint32_t        ext_mem_cnt;
         void            *nxt;
+        struct qla2xxx_fce_chain *fcec;
 
         risc_address = ext_mem_cnt = 0;
         flags = 0;
@@ -1321,10 +1322,31 @@ qla25xx_fw_dump(scsi_qla_host_t *ha, int hardware_locked)
         if (rval != QLA_SUCCESS)
                 goto qla25xx_fw_dump_failed_0;
 
+        /* Fibre Channel Trace Buffer. */
         nxt = qla2xxx_copy_queues(ha, nxt);
         if (ha->eft)
                 memcpy(nxt, ha->eft, ntohl(ha->fw_dump->eft_size));
 
+        /* Fibre Channel Event Buffer. */
+        if (!ha->fce)
+                goto qla25xx_fw_dump_failed_0;
+
+        ha->fw_dump->version |= __constant_htonl(DUMP_CHAIN_VARIANT);
+
+        fcec = nxt + ntohl(ha->fw_dump->eft_size);
+        fcec->type = __constant_htonl(DUMP_CHAIN_FCE | DUMP_CHAIN_LAST);
+        fcec->chain_size = htonl(sizeof(struct qla2xxx_fce_chain) +
+            fce_calc_size(ha->fce_bufs));
+        fcec->size = htonl(fce_calc_size(ha->fce_bufs));
+        fcec->addr_l = htonl(LSD(ha->fce_dma));
+        fcec->addr_h = htonl(MSD(ha->fce_dma));
+
+        iter_reg = fcec->eregs;
+        for (cnt = 0; cnt < 8; cnt++)
+                *iter_reg++ = htonl(ha->fce_mb[cnt]);
+
+        memcpy(iter_reg, ha->fce, ntohl(fcec->size));
+
 qla25xx_fw_dump_failed_0:
         if (rval != QLA_SUCCESS) {
                 qla_printk(KERN_WARNING, ha,
@@ -1428,21 +1450,6 @@ qla2x00_print_scsi_cmd(struct scsi_cmnd * cmd)
         printk("  sp flags=0x%x\n", sp->flags);
 }
 
-void
-qla2x00_dump_pkt(void *pkt)
-{
-        uint32_t i;
-        uint8_t *data = (uint8_t *) pkt;
-
-        for (i = 0; i < 64; i++) {
-                if (!(i % 4))
-                        printk("\n%02x: ", i);
-
-                printk("%02x ", data[i]);
-        }
-        printk("\n");
-}
-
 #if defined(QL_DEBUG_ROUTINES)
 /*
  * qla2x00_formatted_dump_buffer
diff --git a/drivers/scsi/qla2xxx/qla_dbg.h b/drivers/scsi/qla2xxx/qla_dbg.h
index a50ecf0b7c84..524598afc81c 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.h
+++ b/drivers/scsi/qla2xxx/qla_dbg.h
@@ -256,6 +256,25 @@ struct qla25xx_fw_dump {
 #define EFT_BYTES_PER_BUFFER    0x4000
 #define EFT_SIZE                ((EFT_BYTES_PER_BUFFER) * (EFT_NUM_BUFFERS))
 
+#define FCE_NUM_BUFFERS         64
+#define FCE_BYTES_PER_BUFFER    0x400
+#define FCE_SIZE                ((FCE_BYTES_PER_BUFFER) * (FCE_NUM_BUFFERS))
+#define fce_calc_size(b)        ((FCE_BYTES_PER_BUFFER) * (b))
+
+struct qla2xxx_fce_chain {
+        uint32_t type;
+        uint32_t chain_size;
+
+        uint32_t size;
+        uint32_t addr_l;
+        uint32_t addr_h;
+        uint32_t eregs[8];
+};
+
+#define DUMP_CHAIN_VARIANT      0x80000000
+#define DUMP_CHAIN_FCE          0x7FFFFAF0
+#define DUMP_CHAIN_LAST         0x80000000
+
 struct qla2xxx_fw_dump {
         uint8_t signature[4];
         uint32_t version;
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 04e8cbca4c0d..6f129da37589 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -623,9 +623,6 @@ typedef struct {
 #define MBC_GET_LINK_PRIV_STATS         0x6d    /* Get link & private data. */
 #define MBC_SET_VENDOR_ID               0x76    /* Set Vendor ID. */
 
-#define TC_ENABLE                       4
-#define TC_DISABLE                      5
-
 /* Firmware return data sizes */
 #define FCAL_MAP_SIZE   128
 
@@ -862,14 +859,20 @@ typedef struct {
 #define GLSO_SEND_RPS   BIT_0
 #define GLSO_USE_DID    BIT_3
 
-typedef struct {
-        uint32_t        link_fail_cnt;
-        uint32_t        loss_sync_cnt;
-        uint32_t        loss_sig_cnt;
-        uint32_t        prim_seq_err_cnt;
-        uint32_t        inval_xmit_word_cnt;
-        uint32_t        inval_crc_cnt;
-} link_stat_t;
+struct link_statistics {
+        uint32_t link_fail_cnt;
+        uint32_t loss_sync_cnt;
+        uint32_t loss_sig_cnt;
+        uint32_t prim_seq_err_cnt;
+        uint32_t inval_xmit_word_cnt;
+        uint32_t inval_crc_cnt;
+        uint32_t unused1[0x1b];
+        uint32_t tx_frames;
+        uint32_t rx_frames;
+        uint32_t dumped_frames;
+        uint32_t unused2[2];
+        uint32_t nos_rcvd;
+};
 
 /*
  * NVRAM Command values.
@@ -2116,14 +2119,6 @@ struct qla_msix_entry {
 
 #define WATCH_INTERVAL          1       /* number of seconds */
 
-/* NPIV */
-#define MAX_MULTI_ID_LOOP                     126
-#define MAX_MULTI_ID_FABRIC                    64
-#define MAX_NUM_VPORT_LOOP                      (MAX_MULTI_ID_LOOP - 1)
-#define MAX_NUM_VPORT_FABRIC                    (MAX_MULTI_ID_FABRIC - 1)
-#define MAX_NUM_VHBA_LOOP                       (MAX_MULTI_ID_LOOP - 1)
-#define MAX_NUM_VHBA_FABRIC                     (MAX_MULTI_ID_FABRIC - 1)
-
 /*
  * Linux Host Adapter structure
  */
@@ -2161,6 +2156,7 @@ typedef struct scsi_qla_host {
                 uint32_t        gpsc_supported          :1;
                 uint32_t        vsan_enabled            :1;
                 uint32_t        npiv_supported          :1;
+                uint32_t        fce_enabled             :1;
         } flags;
 
         atomic_t        loop_state;
@@ -2273,8 +2269,7 @@ typedef struct scsi_qla_host {
 
         int             bars;
         device_reg_t __iomem *iobase;           /* Base I/O address */
-        unsigned long   pio_address;
-        unsigned long   pio_length;
+        resource_size_t pio_address;
 #define MIN_IOBASE_LEN          0x100
 
         /* ISP ring lock, rings, and indexes */
@@ -2416,9 +2411,9 @@ typedef struct scsi_qla_host {
 #define MBX_INTR_WAIT   2
 #define MBX_UPDATE_FLASH_ACTIVE 3
 
-        struct semaphore mbx_cmd_sem;   /* Serialialize mbx access */
         struct semaphore vport_sem;     /* Virtual port synchronization */
-        struct semaphore mbx_intr_sem;  /* Used for completion notification */
+        struct completion mbx_cmd_comp; /* Serialize mbx access */
+        struct completion mbx_intr_comp;  /* Used for completion notification */
 
         uint32_t        mbx_flags;
 #define  MBX_IN_PROGRESS        BIT_0
@@ -2455,6 +2450,15 @@ typedef struct scsi_qla_host {
         dma_addr_t      eft_dma;
         void            *eft;
 
+        struct dentry *dfs_dir;
+        struct dentry *dfs_fce;
+        dma_addr_t      fce_dma;
+        void            *fce;
+        uint32_t        fce_bufs;
+        uint16_t        fce_mb[8];
+        uint64_t        fce_wr, fce_rd;
+        struct mutex    fce_mutex;
+
         uint8_t         host_str[16];
         uint32_t        pci_attr;
         uint16_t        chip_revision;
@@ -2507,7 +2511,7 @@ typedef struct scsi_qla_host {
 
         struct list_head        vp_list;        /* list of VP */
         struct fc_vport *fc_vport;      /* holds fc_vport * for each vport */
-        uint8_t         vp_idx_map[16];
+        unsigned long   vp_idx_map[(MAX_MULTI_ID_FABRIC / 8) / sizeof(unsigned long)];
         uint16_t        num_vhosts;     /* number of vports created */
         uint16_t        num_vsans;      /* number of vsan created */
         uint16_t        vp_idx;         /* vport ID */
diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
new file mode 100644
index 000000000000..1479c60441c8
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -0,0 +1,175 @@
+/*
+ * QLogic Fibre Channel HBA Driver
+ * Copyright (c)  2003-2005 QLogic Corporation
+ *
+ * See LICENSE.qla2xxx for copyright and licensing details.
+ */
+#include "qla_def.h"
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+static struct dentry *qla2x00_dfs_root;
+static atomic_t qla2x00_dfs_root_count;
+
+static int
+qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
+{
+        scsi_qla_host_t *ha = s->private;
+        uint32_t cnt;
+        uint32_t *fce;
+        uint64_t fce_start;
+
+        mutex_lock(&ha->fce_mutex);
+
+        seq_printf(s, "FCE Trace Buffer\n");
+        seq_printf(s, "In Pointer = %llx\n\n", ha->fce_wr);
+        seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);
+        seq_printf(s, "FCE Enable Registers\n");
+        seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",
+            ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],
+            ha->fce_mb[5], ha->fce_mb[6]);
+
+        fce = (uint32_t *) ha->fce;
+        fce_start = (unsigned long long) ha->fce_dma;
+        for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {
+                if (cnt % 8 == 0)
+                        seq_printf(s, "\n%llx: ",
+                            (unsigned long long)((cnt * 4) + fce_start));
+                else
+                        seq_printf(s, " ");
+                seq_printf(s, "%08x", *fce++);
+        }
+
+        seq_printf(s, "\nEnd\n");
+
+        mutex_unlock(&ha->fce_mutex);
+
+        return 0;
+}
+
+static int
+qla2x00_dfs_fce_open(struct inode *inode, struct file *file)
+{
+        scsi_qla_host_t *ha = inode->i_private;
+        int rval;
+
+        if (!ha->flags.fce_enabled)
+                goto out;
+
+        mutex_lock(&ha->fce_mutex);
+
+        /* Pause tracing to flush FCE buffers. */
+        rval = qla2x00_disable_fce_trace(ha, &ha->fce_wr, &ha->fce_rd);
+        if (rval)
+                qla_printk(KERN_WARNING, ha,
+                    "DebugFS: Unable to disable FCE (%d).\n", rval);
+
+        ha->flags.fce_enabled = 0;
+
+        mutex_unlock(&ha->fce_mutex);
+out:
+        return single_open(file, qla2x00_dfs_fce_show, ha);
+}
+
+static int
+qla2x00_dfs_fce_release(struct inode *inode, struct file *file)
+{
+        scsi_qla_host_t *ha = inode->i_private;
+        int rval;
+
+        if (ha->flags.fce_enabled)
+                goto out;
+
+        mutex_lock(&ha->fce_mutex);
+
+        /* Re-enable FCE tracing. */
+        ha->flags.fce_enabled = 1;
+        memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));
+        rval = qla2x00_enable_fce_trace(ha, ha->fce_dma, ha->fce_bufs,
+            ha->fce_mb, &ha->fce_bufs);
+        if (rval) {
+                qla_printk(KERN_WARNING, ha,
+                    "DebugFS: Unable to reinitialize FCE (%d).\n", rval);
+                ha->flags.fce_enabled = 0;
+        }
+
+        mutex_unlock(&ha->fce_mutex);
+out:
+        return single_release(inode, file);
+}
+
+static const struct file_operations dfs_fce_ops = {
+        .open           = qla2x00_dfs_fce_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = qla2x00_dfs_fce_release,
+};
+
+int
+qla2x00_dfs_setup(scsi_qla_host_t *ha)
+{
+        if (!IS_QLA25XX(ha))
+                goto out;
+        if (!ha->fce)
+                goto out;
+
+        if (qla2x00_dfs_root)
+                goto create_dir;
+
+        atomic_set(&qla2x00_dfs_root_count, 0);
+        qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);
+        if (!qla2x00_dfs_root) {
+                qla_printk(KERN_NOTICE, ha,
+                    "DebugFS: Unable to create root directory.\n");
+                goto out;
+        }
+
+create_dir:
+        if (ha->dfs_dir)
+                goto create_nodes;
+
+        mutex_init(&ha->fce_mutex);
+        ha->dfs_dir = debugfs_create_dir(ha->host_str, qla2x00_dfs_root);
+        if (!ha->dfs_dir) {
+                qla_printk(KERN_NOTICE, ha,
+                    "DebugFS: Unable to create ha directory.\n");
+                goto out;
+        }
+
+        atomic_inc(&qla2x00_dfs_root_count);
+
+create_nodes:
+        ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, ha,
+            &dfs_fce_ops);
+        if (!ha->dfs_fce) {
+                qla_printk(KERN_NOTICE, ha,
+                    "DebugFS: Unable to fce node.\n");
+                goto out;
+        }
+out:
+        return 0;
+}
+
+int
+qla2x00_dfs_remove(scsi_qla_host_t *ha)
+{
+        if (ha->dfs_fce) {
+                debugfs_remove(ha->dfs_fce);
+                ha->dfs_fce = NULL;
+        }
+
+        if (ha->dfs_dir) {
+                debugfs_remove(ha->dfs_dir);
+                ha->dfs_dir = NULL;
+                atomic_dec(&qla2x00_dfs_root_count);
+        }
+
+        if (atomic_read(&qla2x00_dfs_root_count) == 0 &&
+            qla2x00_dfs_root) {
+                debugfs_remove(qla2x00_dfs_root);
+                qla2x00_dfs_root = NULL;
+        }
+
+        return 0;
+}
diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index 25364b1aaf12..9337e138ed63 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -952,9 +952,31 @@ struct device_reg_24xx {
         uint32_t iobase_sdata;
 };
 
+/* Trace Control *************************************************************/
+
+#define TC_AEN_DISABLE          0
+
+#define TC_EFT_ENABLE           4
+#define TC_EFT_DISABLE          5
+
+#define TC_FCE_ENABLE           8
+#define TC_FCE_OPTIONS          0
+#define TC_FCE_DEFAULT_RX_SIZE  2112
+#define TC_FCE_DEFAULT_TX_SIZE  2112
+#define TC_FCE_DISABLE          9
+#define TC_FCE_DISABLE_TRACE    BIT_0
+
 /* MID Support ***************************************************************/
 
-#define MAX_MID_VPS     125
+#define MIN_MULTI_ID_FABRIC     64      /* Must be power-of-2. */
+#define MAX_MULTI_ID_FABRIC     256     /* ... */
+
+#define for_each_mapped_vp_idx(_ha, _idx)               \
+        for (_idx = find_next_bit((_ha)->vp_idx_map,    \
+                (_ha)->max_npiv_vports + 1, 1);         \
+            _idx <= (_ha)->max_npiv_vports;             \
+            _idx = find_next_bit((_ha)->vp_idx_map,     \
+                (_ha)->max_npiv_vports + 1, _idx + 1))  \
 
 struct mid_conf_entry_24xx {
         uint16_t reserved_1;
@@ -982,7 +1004,7 @@ struct mid_init_cb_24xx {
         uint16_t count;
         uint16_t options;
 
-        struct mid_conf_entry_24xx entries[MAX_MID_VPS];
+        struct mid_conf_entry_24xx entries[MAX_MULTI_ID_FABRIC];
 };
 
 
@@ -1002,10 +1024,6 @@ struct mid_db_entry_24xx {
         uint8_t reserved_1;
 };
 
-struct mid_db_24xx {
-        struct mid_db_entry_24xx entries[MAX_MID_VPS];
-};
-
  /*
  * Virtual Fabric ID type definition.
  */
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index 09cb2a908059..ba35fc26ce6b 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -65,33 +65,25 @@ extern int ql2xextended_error_logging;
 extern int ql2xqfullrampup;
 extern int num_hosts;
 
+extern int qla2x00_loop_reset(scsi_qla_host_t *);
+
 /*
  * Global Functions in qla_mid.c source file.
  */
-extern struct scsi_host_template qla2x00_driver_template;
 extern struct scsi_host_template qla24xx_driver_template;
 extern struct scsi_transport_template *qla2xxx_transport_vport_template;
-extern uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
 extern void qla2x00_timer(scsi_qla_host_t *);
 extern void qla2x00_start_timer(scsi_qla_host_t *, void *, unsigned long);
-extern void qla2x00_stop_timer(scsi_qla_host_t *);
-extern uint32_t qla24xx_allocate_vp_id(scsi_qla_host_t *);
 extern void qla24xx_deallocate_vp_id(scsi_qla_host_t *);
 extern int qla24xx_disable_vp (scsi_qla_host_t *);
 extern int qla24xx_enable_vp (scsi_qla_host_t *);
-extern void qla2x00_mem_free(scsi_qla_host_t *);
 extern int qla24xx_control_vp(scsi_qla_host_t *, int );
 extern int qla24xx_modify_vp_config(scsi_qla_host_t *);
 extern int qla2x00_send_change_request(scsi_qla_host_t *, uint16_t, uint16_t);
 extern void qla2x00_vp_stop_timer(scsi_qla_host_t *);
 extern int qla24xx_configure_vhba (scsi_qla_host_t *);
-extern int qla24xx_get_vp_entry(scsi_qla_host_t *, uint16_t, int);
-extern int qla24xx_get_vp_database(scsi_qla_host_t *, uint16_t);
-extern int qla2x00_do_dpc_vp(scsi_qla_host_t *);
 extern void qla24xx_report_id_acquisition(scsi_qla_host_t *,
     struct vp_rpt_id_entry_24xx *);
-extern scsi_qla_host_t * qla24xx_find_vhost_by_name(scsi_qla_host_t *,
-    uint8_t *);
 extern void qla2x00_do_dpc_all_vps(scsi_qla_host_t *);
 extern int qla24xx_vport_create_req_sanity_check(struct fc_vport *);
 extern scsi_qla_host_t * qla24xx_create_vhost(struct fc_vport *);
@@ -103,8 +95,6 @@ extern char *qla2x00_get_fw_version_str(struct scsi_qla_host *, char *);
 extern void qla2x00_mark_device_lost(scsi_qla_host_t *, fc_port_t *, int, int);
 extern void qla2x00_mark_all_devices_lost(scsi_qla_host_t *, int);
 
-extern int qla2x00_down_timeout(struct semaphore *, unsigned long);
-
 extern struct fw_blob *qla2x00_request_firmware(scsi_qla_host_t *);
 
 extern int qla2x00_wait_for_hba_online(scsi_qla_host_t *);
@@ -113,7 +103,6 @@ extern void qla2xxx_wake_dpc(scsi_qla_host_t *);
 extern void qla2x00_alert_all_vps(scsi_qla_host_t *, uint16_t *);
 extern void qla2x00_async_event(scsi_qla_host_t *, uint16_t *);
 extern void qla2x00_vp_abort_isp(scsi_qla_host_t *);
-extern int qla24xx_vport_delete(struct fc_vport *);
 
 /*
  * Global Function Prototypes in qla_iocb.c source file.
@@ -222,21 +211,16 @@ extern int
 qla2x00_get_fcal_position_map(scsi_qla_host_t *ha, char *pos_map);
 
 extern int
-qla2x00_get_link_status(scsi_qla_host_t *, uint16_t, link_stat_t *,
-    uint16_t *);
+qla2x00_get_link_status(scsi_qla_host_t *, uint16_t, struct link_statistics *,
+    dma_addr_t);
 
 extern int
-qla24xx_get_isp_stats(scsi_qla_host_t *, uint32_t *, uint32_t, uint16_t *);
+qla24xx_get_isp_stats(scsi_qla_host_t *, struct link_statistics *,
+    dma_addr_t);
 
 extern int qla24xx_abort_command(scsi_qla_host_t *, srb_t *);
 extern int qla24xx_abort_target(fc_port_t *);
 
-extern int qla2x00_system_error(scsi_qla_host_t *);
-
-extern int
-qla2x00_get_serdes_params(scsi_qla_host_t *, uint16_t *, uint16_t *,
-    uint16_t *);
-
 extern int
 qla2x00_set_serdes_params(scsi_qla_host_t *, uint16_t, uint16_t, uint16_t);
 
@@ -244,13 +228,19 @@ extern int
 qla2x00_stop_firmware(scsi_qla_host_t *);
 
 extern int
-qla2x00_trace_control(scsi_qla_host_t *, uint16_t, dma_addr_t, uint16_t);
+qla2x00_enable_eft_trace(scsi_qla_host_t *, dma_addr_t, uint16_t);
+extern int
+qla2x00_disable_eft_trace(scsi_qla_host_t *);
 
 extern int
-qla2x00_read_sfp(scsi_qla_host_t *, dma_addr_t, uint16_t, uint16_t, uint16_t);
+qla2x00_enable_fce_trace(scsi_qla_host_t *, dma_addr_t, uint16_t , uint16_t *,
+    uint32_t *);
 
 extern int
-qla2x00_get_idma_speed(scsi_qla_host_t *, uint16_t, uint16_t *, uint16_t *);
+qla2x00_disable_fce_trace(scsi_qla_host_t *, uint64_t *, uint64_t *);
+
+extern int
+qla2x00_read_sfp(scsi_qla_host_t *, dma_addr_t, uint16_t, uint16_t, uint16_t);
 
 extern int
 qla2x00_set_idma_speed(scsi_qla_host_t *, uint16_t, uint16_t, uint16_t *);
@@ -270,11 +260,7 @@ extern void qla2x00_free_irqs(scsi_qla_host_t *);
 /*
  * Global Function Prototypes in qla_sup.c source file.
  */
-extern void qla2x00_lock_nvram_access(scsi_qla_host_t *);
-extern void qla2x00_unlock_nvram_access(scsi_qla_host_t *);
 extern void qla2x00_release_nvram_protection(scsi_qla_host_t *);
-extern uint16_t qla2x00_get_nvram_word(scsi_qla_host_t *, uint32_t);
-extern void qla2x00_write_nvram_word(scsi_qla_host_t *, uint32_t, uint16_t);
 extern uint32_t *qla24xx_read_flash_data(scsi_qla_host_t *, uint32_t *,
     uint32_t, uint32_t);
 extern uint8_t *qla2x00_read_nvram_data(scsi_qla_host_t *, uint8_t *, uint32_t,
@@ -321,7 +307,6 @@ extern void qla25xx_fw_dump(scsi_qla_host_t *, int);
 extern void qla2x00_dump_regs(scsi_qla_host_t *);
 extern void qla2x00_dump_buffer(uint8_t *, uint32_t);
 extern void qla2x00_print_scsi_cmd(struct scsi_cmnd *);
-extern void qla2x00_dump_pkt(void *);
 
 /*
  * Global Function Prototypes in qla_gs.c source file.
@@ -356,4 +341,10 @@ extern void qla2x00_free_sysfs_attr(scsi_qla_host_t *);
 extern void qla2x00_init_host_attr(scsi_qla_host_t *);
 extern void qla2x00_alloc_sysfs_attr(scsi_qla_host_t *);
 extern void qla2x00_free_sysfs_attr(scsi_qla_host_t *);
+
+/*
+ * Global Function Prototypes in qla_dfs.c source file.
+ */
+extern int qla2x00_dfs_setup(scsi_qla_host_t *);
+extern int qla2x00_dfs_remove(scsi_qla_host_t *);
 #endif /* _QLA_GBL_H */
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 191dafd89be0..d0633ca894be 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -732,9 +732,9 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *ha)
 {
         int rval;
         uint32_t dump_size, fixed_size, mem_size, req_q_size, rsp_q_size,
-            eft_size;
-        dma_addr_t eft_dma;
-        void *eft;
+            eft_size, fce_size;
+        dma_addr_t tc_dma;
+        void *tc;
 
         if (ha->fw_dump) {
                 qla_printk(KERN_WARNING, ha,
@@ -743,7 +743,7 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *ha)
         }
 
         ha->fw_dumped = 0;
-        fixed_size = mem_size = eft_size = 0;
+        fixed_size = mem_size = eft_size = fce_size = 0;
         if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
                 fixed_size = sizeof(struct qla2100_fw_dump);
         } else if (IS_QLA23XX(ha)) {
@@ -758,21 +758,21 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *ha)
                     sizeof(uint32_t);
 
                 /* Allocate memory for Extended Trace Buffer. */
-                eft = dma_alloc_coherent(&ha->pdev->dev, EFT_SIZE, &eft_dma,
+                tc = dma_alloc_coherent(&ha->pdev->dev, EFT_SIZE, &tc_dma,
                     GFP_KERNEL);
-                if (!eft) {
+                if (!tc) {
                         qla_printk(KERN_WARNING, ha, "Unable to allocate "
                             "(%d KB) for EFT.\n", EFT_SIZE / 1024);
                         goto cont_alloc;
                 }
 
-                rval = qla2x00_trace_control(ha, TC_ENABLE, eft_dma,
-                    EFT_NUM_BUFFERS);
+                memset(tc, 0, EFT_SIZE);
+                rval = qla2x00_enable_eft_trace(ha, tc_dma, EFT_NUM_BUFFERS);
                 if (rval) {
                         qla_printk(KERN_WARNING, ha, "Unable to initialize "
                             "EFT (%d).\n", rval);
-                        dma_free_coherent(&ha->pdev->dev, EFT_SIZE, eft,
-                            eft_dma);
+                        dma_free_coherent(&ha->pdev->dev, EFT_SIZE, tc,
+                            tc_dma);
                         goto cont_alloc;
                 }
 
@@ -780,9 +780,40 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *ha)
                     EFT_SIZE / 1024);
 
                 eft_size = EFT_SIZE;
-                memset(eft, 0, eft_size);
-                ha->eft_dma = eft_dma;
-                ha->eft = eft;
+                ha->eft_dma = tc_dma;
+                ha->eft = tc;
+
+                /* Allocate memory for Fibre Channel Event Buffer. */
+                if (!IS_QLA25XX(ha))
+                        goto cont_alloc;
+
+                tc = dma_alloc_coherent(&ha->pdev->dev, FCE_SIZE, &tc_dma,
+                    GFP_KERNEL);
+                if (!tc) {
+                        qla_printk(KERN_WARNING, ha, "Unable to allocate "
+                            "(%d KB) for FCE.\n", FCE_SIZE / 1024);
+                        goto cont_alloc;
+                }
+
+                memset(tc, 0, FCE_SIZE);
+                rval = qla2x00_enable_fce_trace(ha, tc_dma, FCE_NUM_BUFFERS,
+                    ha->fce_mb, &ha->fce_bufs);
+                if (rval) {
+                        qla_printk(KERN_WARNING, ha, "Unable to initialize "
+                            "FCE (%d).\n", rval);
+                        dma_free_coherent(&ha->pdev->dev, FCE_SIZE, tc,
+                            tc_dma);
+                        ha->flags.fce_enabled = 0;
+                        goto cont_alloc;
+                }
+
+                qla_printk(KERN_INFO, ha, "Allocated (%d KB) for FCE...\n",
+                    FCE_SIZE / 1024);
+
+                fce_size = sizeof(struct qla2xxx_fce_chain) + EFT_SIZE;
+                ha->flags.fce_enabled = 1;
+                ha->fce_dma = tc_dma;
+                ha->fce = tc;
         }
 cont_alloc:
         req_q_size = ha->request_q_length * sizeof(request_t);
@@ -790,7 +821,7 @@ cont_alloc:
 
         dump_size = offsetof(struct qla2xxx_fw_dump, isp);
         dump_size += fixed_size + mem_size + req_q_size + rsp_q_size +
-            eft_size;
+            eft_size + fce_size;
 
         ha->fw_dump = vmalloc(dump_size);
         if (!ha->fw_dump) {
@@ -922,9 +953,9 @@ qla2x00_setup_chip(scsi_qla_host_t *ha)
                                         ha->flags.npiv_supported = 1;
                                         if ((!ha->max_npiv_vports) ||
                                             ((ha->max_npiv_vports + 1) %
-                                            MAX_MULTI_ID_FABRIC))
+                                            MIN_MULTI_ID_FABRIC))
                                                 ha->max_npiv_vports =
-                                                    MAX_NUM_VPORT_FABRIC;
+                                                    MIN_MULTI_ID_FABRIC - 1;
                                 }
 
                                 if (ql2xallocfwdump)
@@ -1162,7 +1193,10 @@ qla2x00_init_rings(scsi_qla_host_t *ha)
 
         DEBUG(printk("scsi(%ld): Issue init firmware.\n", ha->host_no));
 
-        mid_init_cb->count = ha->max_npiv_vports;
+        if (ha->flags.npiv_supported)
+                mid_init_cb->count = cpu_to_le16(ha->max_npiv_vports);
+
+        mid_init_cb->options = __constant_cpu_to_le16(BIT_1);
 
         rval = qla2x00_init_firmware(ha, ha->init_cb_size);
         if (rval) {
@@ -2566,14 +2600,7 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *ha, struct list_head *new_fcports)
 
                 /* Bypass virtual ports of the same host. */
                 if (pha->num_vhosts) {
-                        vp_index = find_next_bit(
-                            (unsigned long *)pha->vp_idx_map,
-                            MAX_MULTI_ID_FABRIC + 1, 1);
-
-                        for (;vp_index <= MAX_MULTI_ID_FABRIC;
-                            vp_index = find_next_bit(
-                            (unsigned long *)pha->vp_idx_map,
-                            MAX_MULTI_ID_FABRIC + 1, vp_index + 1)) {
+                        for_each_mapped_vp_idx(pha, vp_index) {
                                 empty_vp_index = 1;
                                 found_vp = 0;
                                 list_for_each_entry(vha, &pha->vp_list,
@@ -2592,7 +2619,8 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *ha, struct list_head *new_fcports)
                                     new_fcport->d_id.b24 == vha->d_id.b24)
                                         break;
                         }
-                        if (vp_index <= MAX_MULTI_ID_FABRIC)
+
+                        if (vp_index <= pha->max_npiv_vports)
                                 continue;
                 }
 
@@ -3245,7 +3273,7 @@ qla2x00_abort_isp(scsi_qla_host_t *ha)
                         clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
 
                         if (ha->eft) {
-                                rval = qla2x00_trace_control(ha, TC_ENABLE,
+                                rval = qla2x00_enable_eft_trace(ha,
                                     ha->eft_dma, EFT_NUM_BUFFERS);
                                 if (rval) {
                                         qla_printk(KERN_WARNING, ha,
@@ -3253,6 +3281,21 @@ qla2x00_abort_isp(scsi_qla_host_t *ha)
                                             "(%d).\n", rval);
                                 }
                         }
+
+                        if (ha->fce) {
+                                ha->flags.fce_enabled = 1;
+                                memset(ha->fce, 0,
+                                    fce_calc_size(ha->fce_bufs));
+                                rval = qla2x00_enable_fce_trace(ha,
+                                    ha->fce_dma, ha->fce_bufs, ha->fce_mb,
+                                    &ha->fce_bufs);
+                                if (rval) {
+                                        qla_printk(KERN_WARNING, ha,
+                                            "Unable to reinitialize FCE "
+                                            "(%d).\n", rval);
+                                        ha->flags.fce_enabled = 0;
+                                }
+                        }
                 } else {        /* failed the ISP abort */
                         ha->flags.online = 1;
                         if (test_bit(ISP_ABORT_RETRY, &ha->dpc_flags)) {
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 1104bd2eed40..642a0c3f09c6 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -104,7 +104,7 @@ qla2100_intr_handler(int irq, void *dev_id)
         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
-                up(&ha->mbx_intr_sem);
+                complete(&ha->mbx_intr_comp);
         }
 
         return (IRQ_HANDLED);
@@ -216,7 +216,7 @@ qla2300_intr_handler(int irq, void *dev_id)
         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
-                up(&ha->mbx_intr_sem);
+                complete(&ha->mbx_intr_comp);
         }
 
         return (IRQ_HANDLED);
@@ -347,10 +347,6 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                 break;
 
         case MBA_SYSTEM_ERR:            /* System Error */
-                mb[1] = RD_MAILBOX_REG(ha, reg, 1);
-                mb[2] = RD_MAILBOX_REG(ha, reg, 2);
-                mb[3] = RD_MAILBOX_REG(ha, reg, 3);
-
                 qla_printk(KERN_INFO, ha,
                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
                     mb[1], mb[2], mb[3]);
@@ -579,12 +575,15 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
                 /* Check if the Vport has issued a SCR */
                 if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags))
                         break;
+                /* Only handle SCNs for our Vport index. */
+                if (ha->flags.npiv_supported && ha->vp_idx != mb[3])
+                        break;
 
                 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
                     ha->host_no));
                 DEBUG(printk(KERN_INFO
-                    "scsi(%ld): RSCN database changed -- %04x %04x.\n",
-                    ha->host_no, mb[1], mb[2]));
+                    "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
+                    ha->host_no, mb[1], mb[2], mb[3]));
 
                 rscn_entry = (mb[1] << 16) | mb[2];
                 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
@@ -823,6 +822,35 @@ qla2x00_process_response_queue(struct scsi_qla_host *ha)
         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
 }
 
+static inline void
+qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len)
+{
+        struct scsi_cmnd *cp = sp->cmd;
+
+        if (sense_len >= SCSI_SENSE_BUFFERSIZE)
+                sense_len = SCSI_SENSE_BUFFERSIZE;
+
+        CMD_ACTUAL_SNSLEN(cp) = sense_len;
+        sp->request_sense_length = sense_len;
+        sp->request_sense_ptr = cp->sense_buffer;
+        if (sp->request_sense_length > 32)
+                sense_len = 32;
+
+        memcpy(cp->sense_buffer, sense_data, sense_len);
+
+        sp->request_sense_ptr += sense_len;
+        sp->request_sense_length -= sense_len;
+        if (sp->request_sense_length != 0)
+                sp->ha->status_srb = sp;
+
+        DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
+            "cmd=%p pid=%ld\n", __func__, sp->ha->host_no, cp->device->channel,
+            cp->device->id, cp->device->lun, cp, cp->serial_number));
+        if (sense_len)
+                DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
+                    CMD_ACTUAL_SNSLEN(cp)));
+}
+
 /**
  * qla2x00_status_entry() - Process a Status IOCB entry.
  * @ha: SCSI driver HA context
@@ -977,36 +1005,11 @@ qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
                 if (lscsi_status != SS_CHECK_CONDITION)
                         break;
 
-                /* Copy Sense Data into sense buffer. */
-                memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
-
+                memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
                 if (!(scsi_status & SS_SENSE_LEN_VALID))
                         break;
 
-                if (sense_len >= sizeof(cp->sense_buffer))
-                        sense_len = sizeof(cp->sense_buffer);
-
-                CMD_ACTUAL_SNSLEN(cp) = sense_len;
-                sp->request_sense_length = sense_len;
-                sp->request_sense_ptr = cp->sense_buffer;
-
-                if (sp->request_sense_length > 32)
-                        sense_len = 32;
-
-                memcpy(cp->sense_buffer, sense_data, sense_len);
-
-                sp->request_sense_ptr += sense_len;
-                sp->request_sense_length -= sense_len;
-                if (sp->request_sense_length != 0)
-                        ha->status_srb = sp;
-
-                DEBUG5(printk("%s(): Check condition Sense data, "
-                    "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
-                    ha->host_no, cp->device->channel, cp->device->id,
-                    cp->device->lun, cp, cp->serial_number));
-                if (sense_len)
-                        DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
-                            CMD_ACTUAL_SNSLEN(cp)));
+                qla2x00_handle_sense(sp, sense_data, sense_len);
                 break;
 
         case CS_DATA_UNDERRUN:
@@ -1061,34 +1064,11 @@ qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
                         if (lscsi_status != SS_CHECK_CONDITION)
                                 break;
 
-                        /* Copy Sense Data into sense buffer */
-                        memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
-
+                        memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
                         if (!(scsi_status & SS_SENSE_LEN_VALID))
                                 break;
 
-                        if (sense_len >= sizeof(cp->sense_buffer))
-                                sense_len = sizeof(cp->sense_buffer);
-
-                        CMD_ACTUAL_SNSLEN(cp) = sense_len;
-                        sp->request_sense_length = sense_len;
-                        sp->request_sense_ptr = cp->sense_buffer;
-
-                        if (sp->request_sense_length > 32)
-                                sense_len = 32;
-
-                        memcpy(cp->sense_buffer, sense_data, sense_len);
-
-                        sp->request_sense_ptr += sense_len;
-                        sp->request_sense_length -= sense_len;
-                        if (sp->request_sense_length != 0)
-                                ha->status_srb = sp;
-
-                        DEBUG5(printk("%s(): Check condition Sense data, "
-                            "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
-                            __func__, ha->host_no, cp->device->channel,
-                            cp->device->id, cp->device->lun, cp,
-                            cp->serial_number));
+                        qla2x00_handle_sense(sp, sense_data, sense_len);
 
                         /*
                          * In case of a Underrun condition, set both the lscsi
@@ -1108,10 +1088,6 @@ qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
 
                                 cp->result = DID_ERROR << 16 | lscsi_status;
                         }
-
-                        if (sense_len)
-                                DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
-                                    CMD_ACTUAL_SNSLEN(cp)));
                 } else {
                         /*
                          * If RISC reports underrun and target does not report
@@ -1621,7 +1597,7 @@ qla24xx_intr_handler(int irq, void *dev_id)
         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
-                up(&ha->mbx_intr_sem);
+                complete(&ha->mbx_intr_comp);
         }
 
         return IRQ_HANDLED;
@@ -1758,7 +1734,7 @@ qla24xx_msix_default(int irq, void *dev_id)
         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
-                up(&ha->mbx_intr_sem);
+                complete(&ha->mbx_intr_comp);
         }
 
         return IRQ_HANDLED;
@@ -1853,6 +1829,18 @@ qla2x00_request_irqs(scsi_qla_host_t *ha)
                 goto skip_msix;
         }
 
+        if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
+            (ha->pdev->subsystem_device == 0x7040 ||
+                ha->pdev->subsystem_device == 0x7041 ||
+                ha->pdev->subsystem_device == 0x1705)) {
+                DEBUG2(qla_printk(KERN_WARNING, ha,
+                    "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
+                    ha->pdev->subsystem_vendor,
+                    ha->pdev->subsystem_device));
+
+                goto skip_msi;
+        }
+
         ret = qla24xx_enable_msix(ha);
         if (!ret) {
                 DEBUG2(qla_printk(KERN_INFO, ha,
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index ccd662a6f5dc..0c10c0b0fb73 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -8,19 +8,6 @@
 
 #include <linux/delay.h>
 
-static void
-qla2x00_mbx_sem_timeout(unsigned long data)
-{
-        struct semaphore        *sem_ptr = (struct semaphore *)data;
-
-        DEBUG11(printk("qla2x00_sem_timeout: entered.\n"));
-
-        if (sem_ptr != NULL) {
-                up(sem_ptr);
-        }
-
-        DEBUG11(printk("qla2x00_mbx_sem_timeout: exiting.\n"));
-}
 
 /*
  * qla2x00_mailbox_command
@@ -47,7 +34,6 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp)
         int             rval;
         unsigned long    flags = 0;
         device_reg_t __iomem *reg;
-        struct timer_list       tmp_intr_timer;
         uint8_t         abort_active;
         uint8_t         io_lock_on;
         uint16_t        command;
@@ -72,7 +58,8 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp)
          * non ISP abort time.
          */
         if (!abort_active) {
-                if (qla2x00_down_timeout(&ha->mbx_cmd_sem, mcp->tov * HZ)) {
+                if (!wait_for_completion_timeout(&ha->mbx_cmd_comp,
+                    mcp->tov * HZ)) {
                         /* Timeout occurred. Return error. */
                         DEBUG2_3_11(printk("%s(%ld): cmd access timeout. "
                             "Exiting.\n", __func__, ha->host_no));
@@ -135,22 +122,6 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp)
         /* Wait for mbx cmd completion until timeout */
 
         if (!abort_active && io_lock_on) {
-                /* sleep on completion semaphore */
-                DEBUG11(printk("%s(%ld): INTERRUPT MODE. Initializing timer.\n",
-                    __func__, ha->host_no));
-
-                init_timer(&tmp_intr_timer);
-                tmp_intr_timer.data = (unsigned long)&ha->mbx_intr_sem;
-                tmp_intr_timer.expires = jiffies + mcp->tov * HZ;
-                tmp_intr_timer.function =
-                    (void (*)(unsigned long))qla2x00_mbx_sem_timeout;
-
-                DEBUG11(printk("%s(%ld): Adding timer.\n", __func__,
-                    ha->host_no));
-                add_timer(&tmp_intr_timer);
-
-                DEBUG11(printk("%s(%ld): going to unlock & sleep. "
-                    "time=0x%lx.\n", __func__, ha->host_no, jiffies));
 
                 set_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
 
@@ -160,17 +131,10 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp)
                         WRT_REG_WORD(&reg->isp.hccr, HCCR_SET_HOST_INT);
                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
-                /* Wait for either the timer to expire
-                 * or the mbox completion interrupt
-                 */
-                down(&ha->mbx_intr_sem);
+                wait_for_completion_timeout(&ha->mbx_intr_comp, mcp->tov * HZ);
 
-                DEBUG11(printk("%s(%ld): waking up. time=0x%lx\n", __func__,
-                    ha->host_no, jiffies));
                 clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
 
-                /* delete the timer */
-                del_timer(&tmp_intr_timer);
         } else {
                 DEBUG3_11(printk("%s(%ld): cmd=%x POLLING MODE.\n", __func__,
                     ha->host_no, command));
@@ -299,7 +263,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *pvha, mbx_cmd_t *mcp)
 
         /* Allow next mbx cmd to come in. */
         if (!abort_active)
-                up(&ha->mbx_cmd_sem);
+                complete(&ha->mbx_cmd_comp);
 
         if (rval) {
                 DEBUG2_3_11(printk("%s(%ld): **** FAILED. mbx0=%x, mbx1=%x, "
@@ -905,7 +869,7 @@ qla2x00_get_adapter_id(scsi_qla_host_t *ha, uint16_t *id, uint8_t *al_pa,
 
         mcp->mb[0] = MBC_GET_ADAPTER_LOOP_ID;
         mcp->mb[9] = ha->vp_idx;
-        mcp->out_mb = MBX_0;
+        mcp->out_mb = MBX_9|MBX_0;
         mcp->in_mb = MBX_9|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
         mcp->tov = 30;
         mcp->flags = 0;
@@ -1016,7 +980,7 @@ qla2x00_init_firmware(scsi_qla_host_t *ha, uint16_t size)
         DEBUG11(printk("qla2x00_init_firmware(%ld): entered.\n",
             ha->host_no));
 
-        if (ha->flags.npiv_supported)
+        if (ha->fw_attributes & BIT_2)
                 mcp->mb[0] = MBC_MID_INITIALIZE_FIRMWARE;
         else
                 mcp->mb[0] = MBC_INITIALIZE_FIRMWARE;
@@ -2042,29 +2006,20 @@ qla2x00_get_fcal_position_map(scsi_qla_host_t *ha, char *pos_map)
  */
 int
 qla2x00_get_link_status(scsi_qla_host_t *ha, uint16_t loop_id,
-    link_stat_t *ret_buf, uint16_t *status)
+    struct link_statistics *stats, dma_addr_t stats_dma)
 {
         int rval;
         mbx_cmd_t mc;
         mbx_cmd_t *mcp = &mc;
-        link_stat_t *stat_buf;
-        dma_addr_t stat_buf_dma;
+        uint32_t *siter, *diter, dwords;
 
         DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
 
-        stat_buf = dma_pool_alloc(ha->s_dma_pool, GFP_ATOMIC, &stat_buf_dma);
-        if (stat_buf == NULL) {
-                DEBUG2_3_11(printk("%s(%ld): Failed to allocate memory.\n",
-                    __func__, ha->host_no));
-                return BIT_0;
-        }
-        memset(stat_buf, 0, sizeof(link_stat_t));
-
         mcp->mb[0] = MBC_GET_LINK_STATUS;
-        mcp->mb[2] = MSW(stat_buf_dma);
-        mcp->mb[3] = LSW(stat_buf_dma);
-        mcp->mb[6] = MSW(MSD(stat_buf_dma));
-        mcp->mb[7] = LSW(MSD(stat_buf_dma));
+        mcp->mb[2] = MSW(stats_dma);
+        mcp->mb[3] = LSW(stats_dma);
+        mcp->mb[6] = MSW(MSD(stats_dma));
+        mcp->mb[7] = LSW(MSD(stats_dma));
         mcp->out_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
         mcp->in_mb = MBX_0;
         if (IS_FWI2_CAPABLE(ha)) {
@@ -2089,78 +2044,43 @@ qla2x00_get_link_status(scsi_qla_host_t *ha, uint16_t loop_id,
                 if (mcp->mb[0] != MBS_COMMAND_COMPLETE) {
                         DEBUG2_3_11(printk("%s(%ld): cmd failed. mbx0=%x.\n",
                             __func__, ha->host_no, mcp->mb[0]));
-                        status[0] = mcp->mb[0];
-                        rval = BIT_1;
+                        rval = QLA_FUNCTION_FAILED;
                 } else {
-                        /* copy over data -- firmware data is LE. */
-                        ret_buf->link_fail_cnt =
-                            le32_to_cpu(stat_buf->link_fail_cnt);
-                        ret_buf->loss_sync_cnt =
-                            le32_to_cpu(stat_buf->loss_sync_cnt);
-                        ret_buf->loss_sig_cnt =
-                            le32_to_cpu(stat_buf->loss_sig_cnt);
-                        ret_buf->prim_seq_err_cnt =
-                            le32_to_cpu(stat_buf->prim_seq_err_cnt);
-                        ret_buf->inval_xmit_word_cnt =
-                            le32_to_cpu(stat_buf->inval_xmit_word_cnt);
-                        ret_buf->inval_crc_cnt =
-                            le32_to_cpu(stat_buf->inval_crc_cnt);
-
-                        DEBUG11(printk("%s(%ld): stat dump: fail_cnt=%d "
-                            "loss_sync=%d loss_sig=%d seq_err=%d "
-                            "inval_xmt_word=%d inval_crc=%d.\n", __func__,
-                            ha->host_no, stat_buf->link_fail_cnt,
-                            stat_buf->loss_sync_cnt, stat_buf->loss_sig_cnt,
-                            stat_buf->prim_seq_err_cnt,
-                            stat_buf->inval_xmit_word_cnt,
-                            stat_buf->inval_crc_cnt));
+                        /* Copy over data -- firmware data is LE. */
+                        dwords = offsetof(struct link_statistics, unused1) / 4;
+                        siter = diter = &stats->link_fail_cnt;
+                        while (dwords--)
+                                *diter++ = le32_to_cpu(*siter++);
                 }
         } else {
                 /* Failed. */
                 DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                     ha->host_no, rval));
-                rval = BIT_1;
         }
 
-        dma_pool_free(ha->s_dma_pool, stat_buf, stat_buf_dma);
-
         return rval;
 }
 
 int
-qla24xx_get_isp_stats(scsi_qla_host_t *ha, uint32_t *dwbuf, uint32_t dwords,
-    uint16_t *status)
+qla24xx_get_isp_stats(scsi_qla_host_t *ha, struct link_statistics *stats,
+    dma_addr_t stats_dma)
 {
         int rval;
         mbx_cmd_t mc;
         mbx_cmd_t *mcp = &mc;
-        uint32_t *sbuf, *siter;
-        dma_addr_t sbuf_dma;
+        uint32_t *siter, *diter, dwords;
 
         DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
 
-        if (dwords > (DMA_POOL_SIZE / 4)) {
-                DEBUG2_3_11(printk("%s(%ld): Unabled to retrieve %d DWORDs "
-                    "(max %d).\n", __func__, ha->host_no, dwords,
-                    DMA_POOL_SIZE / 4));
-                return BIT_0;
-        }
-        sbuf = dma_pool_alloc(ha->s_dma_pool, GFP_ATOMIC, &sbuf_dma);
-        if (sbuf == NULL) {
-                DEBUG2_3_11(printk("%s(%ld): Failed to allocate memory.\n",
-                    __func__, ha->host_no));
-                return BIT_0;
-        }
-        memset(sbuf, 0, DMA_POOL_SIZE);
-
         mcp->mb[0] = MBC_GET_LINK_PRIV_STATS;
-        mcp->mb[2] = MSW(sbuf_dma);
-        mcp->mb[3] = LSW(sbuf_dma);
-        mcp->mb[6] = MSW(MSD(sbuf_dma));
-        mcp->mb[7] = LSW(MSD(sbuf_dma));
-        mcp->mb[8] = dwords;
+        mcp->mb[2] = MSW(stats_dma);
+        mcp->mb[3] = LSW(stats_dma);
+        mcp->mb[6] = MSW(MSD(stats_dma));
+        mcp->mb[7] = LSW(MSD(stats_dma));
+        mcp->mb[8] = sizeof(struct link_statistics) / 4;
+        mcp->mb[9] = ha->vp_idx;
         mcp->mb[10] = 0;
-        mcp->out_mb = MBX_10|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
+        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
         mcp->in_mb = MBX_2|MBX_1|MBX_0;
         mcp->tov = 30;
         mcp->flags = IOCTL_CMD;
@@ -2170,23 +2090,20 @@ qla24xx_get_isp_stats(scsi_qla_host_t *ha, uint32_t *dwbuf, uint32_t dwords,
                 if (mcp->mb[0] != MBS_COMMAND_COMPLETE) {
                         DEBUG2_3_11(printk("%s(%ld): cmd failed. mbx0=%x.\n",
                             __func__, ha->host_no, mcp->mb[0]));
-                        status[0] = mcp->mb[0];
-                        rval = BIT_1;
+                        rval = QLA_FUNCTION_FAILED;
                 } else {
                         /* Copy over data -- firmware data is LE. */
-                        siter = sbuf;
+                        dwords = sizeof(struct link_statistics) / 4;
+                        siter = diter = &stats->link_fail_cnt;
                         while (dwords--)
-                                *dwbuf++ = le32_to_cpu(*siter++);
+                                *diter++ = le32_to_cpu(*siter++);
                 }
         } else {
                 /* Failed. */
                 DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
                     ha->host_no, rval));
-                rval = BIT_1;
         }
 
-        dma_pool_free(ha->s_dma_pool, sbuf, sbuf_dma);
-
         return rval;
 }
 
@@ -2331,6 +2248,8 @@ atarget_done:
         return rval;
 }
 
+#if 0
+
 int
 qla2x00_system_error(scsi_qla_host_t *ha)
 {
@@ -2360,47 +2279,7 @@ qla2x00_system_error(scsi_qla_host_t *ha)
         return rval;
 }
 
-/**
- * qla2x00_get_serdes_params() -
- * @ha: HA context
- *
- * Returns
- */
-int
-qla2x00_get_serdes_params(scsi_qla_host_t *ha, uint16_t *sw_em_1g,
-    uint16_t *sw_em_2g, uint16_t *sw_em_4g)
-{
-        int rval;
-        mbx_cmd_t mc;
-        mbx_cmd_t *mcp = &mc;
-
-        DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
-
-        mcp->mb[0] = MBC_SERDES_PARAMS;
-        mcp->mb[1] = 0;
-        mcp->out_mb = MBX_1|MBX_0;
-        mcp->in_mb = MBX_4|MBX_3|MBX_2|MBX_0;
-        mcp->tov = 30;
-        mcp->flags = 0;
-        rval = qla2x00_mailbox_command(ha, mcp);
-
-        if (rval != QLA_SUCCESS) {
-                /*EMPTY*/
-                DEBUG2_3_11(printk("%s(%ld): failed=%x (%x).\n", __func__,
-                    ha->host_no, rval, mcp->mb[0]));
-        } else {
-                DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
-
-                if (sw_em_1g)
-                        *sw_em_1g = mcp->mb[2];
-                if (sw_em_2g)
-                        *sw_em_2g = mcp->mb[3];
-                if (sw_em_4g)
-                        *sw_em_4g = mcp->mb[4];
-        }
-
-        return rval;
-}
+#endif  /*  0  */
 
 /**
  * qla2x00_set_serdes_params() -
@@ -2471,7 +2350,7 @@ qla2x00_stop_firmware(scsi_qla_host_t *ha)
 }
 
 int
-qla2x00_trace_control(scsi_qla_host_t *ha, uint16_t ctrl, dma_addr_t eft_dma,
+qla2x00_enable_eft_trace(scsi_qla_host_t *ha, dma_addr_t eft_dma,
     uint16_t buffers)
 {
         int rval;
@@ -2484,22 +2363,18 @@ qla2x00_trace_control(scsi_qla_host_t *ha, uint16_t ctrl, dma_addr_t eft_dma,
         DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
 
         mcp->mb[0] = MBC_TRACE_CONTROL;
-        mcp->mb[1] = ctrl;
-        mcp->out_mb = MBX_1|MBX_0;
+        mcp->mb[1] = TC_EFT_ENABLE;
+        mcp->mb[2] = LSW(eft_dma);
+        mcp->mb[3] = MSW(eft_dma);
+        mcp->mb[4] = LSW(MSD(eft_dma));
+        mcp->mb[5] = MSW(MSD(eft_dma));
+        mcp->mb[6] = buffers;
+        mcp->mb[7] = TC_AEN_DISABLE;
+        mcp->out_mb = MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
         mcp->in_mb = MBX_1|MBX_0;
-        if (ctrl == TC_ENABLE) {
-                mcp->mb[2] = LSW(eft_dma);
-                mcp->mb[3] = MSW(eft_dma);
-                mcp->mb[4] = LSW(MSD(eft_dma));
-                mcp->mb[5] = MSW(MSD(eft_dma));
-                mcp->mb[6] = buffers;
-                mcp->mb[7] = 0;
-                mcp->out_mb |= MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2;
-        }
         mcp->tov = 30;
         mcp->flags = 0;
         rval = qla2x00_mailbox_command(ha, mcp);
-
         if (rval != QLA_SUCCESS) {
                 DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
                     __func__, ha->host_no, rval, mcp->mb[0], mcp->mb[1]));
@@ -2511,8 +2386,7 @@ qla2x00_trace_control(scsi_qla_host_t *ha, uint16_t ctrl, dma_addr_t eft_dma,
 }
 
 int
-qla2x00_read_sfp(scsi_qla_host_t *ha, dma_addr_t sfp_dma, uint16_t addr,
-    uint16_t off, uint16_t count)
+qla2x00_disable_eft_trace(scsi_qla_host_t *ha)
 {
         int rval;
         mbx_cmd_t mc;
@@ -2523,24 +2397,16 @@ qla2x00_read_sfp(scsi_qla_host_t *ha, dma_addr_t sfp_dma, uint16_t addr,
 
         DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
 
-        mcp->mb[0] = MBC_READ_SFP;
-        mcp->mb[1] = addr;
-        mcp->mb[2] = MSW(sfp_dma);
-        mcp->mb[3] = LSW(sfp_dma);
-        mcp->mb[6] = MSW(MSD(sfp_dma));
-        mcp->mb[7] = LSW(MSD(sfp_dma));
-        mcp->mb[8] = count;
-        mcp->mb[9] = off;
-        mcp->mb[10] = 0;
-        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
-        mcp->in_mb = MBX_0;
+        mcp->mb[0] = MBC_TRACE_CONTROL;
+        mcp->mb[1] = TC_EFT_DISABLE;
+        mcp->out_mb = MBX_1|MBX_0;
+        mcp->in_mb = MBX_1|MBX_0;
         mcp->tov = 30;
         mcp->flags = 0;
         rval = qla2x00_mailbox_command(ha, mcp);
-
         if (rval != QLA_SUCCESS) {
-                DEBUG2_3_11(printk("%s(%ld): failed=%x (%x).\n", __func__,
-                    ha->host_no, rval, mcp->mb[0]));
+                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
+                    __func__, ha->host_no, rval, mcp->mb[0], mcp->mb[1]));
         } else {
                 DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
         }
@@ -2549,176 +2415,168 @@ qla2x00_read_sfp(scsi_qla_host_t *ha, dma_addr_t sfp_dma, uint16_t addr,
 }
 
 int
-qla2x00_get_idma_speed(scsi_qla_host_t *ha, uint16_t loop_id,
-    uint16_t *port_speed, uint16_t *mb)
+qla2x00_enable_fce_trace(scsi_qla_host_t *ha, dma_addr_t fce_dma,
+    uint16_t buffers, uint16_t *mb, uint32_t *dwords)
 {
         int rval;
         mbx_cmd_t mc;
         mbx_cmd_t *mcp = &mc;
 
-        if (!IS_IIDMA_CAPABLE(ha))
+        if (!IS_QLA25XX(ha))
                 return QLA_FUNCTION_FAILED;
 
         DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
 
-        mcp->mb[0] = MBC_PORT_PARAMS;
-        mcp->mb[1] = loop_id;
-        mcp->mb[2] = mcp->mb[3] = mcp->mb[4] = mcp->mb[5] = 0;
-        mcp->out_mb = MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
-        mcp->in_mb = MBX_5|MBX_4|MBX_3|MBX_1|MBX_0;
+        mcp->mb[0] = MBC_TRACE_CONTROL;
+        mcp->mb[1] = TC_FCE_ENABLE;
+        mcp->mb[2] = LSW(fce_dma);
+        mcp->mb[3] = MSW(fce_dma);
+        mcp->mb[4] = LSW(MSD(fce_dma));
+        mcp->mb[5] = MSW(MSD(fce_dma));
+        mcp->mb[6] = buffers;
+        mcp->mb[7] = TC_AEN_DISABLE;
+        mcp->mb[8] = 0;
+        mcp->mb[9] = TC_FCE_DEFAULT_RX_SIZE;
+        mcp->mb[10] = TC_FCE_DEFAULT_TX_SIZE;
+        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|
+            MBX_1|MBX_0;
+        mcp->in_mb = MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
         mcp->tov = 30;
         mcp->flags = 0;
         rval = qla2x00_mailbox_command(ha, mcp);
-
-        /* Return mailbox statuses. */
-        if (mb != NULL) {
-                mb[0] = mcp->mb[0];
-                mb[1] = mcp->mb[1];
-                mb[3] = mcp->mb[3];
-                mb[4] = mcp->mb[4];
-                mb[5] = mcp->mb[5];
-        }
-
         if (rval != QLA_SUCCESS) {
-                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
-                    ha->host_no, rval));
+                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
+                    __func__, ha->host_no, rval, mcp->mb[0], mcp->mb[1]));
         } else {
                 DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
-                if (port_speed)
-                        *port_speed = mcp->mb[3];
+
+                if (mb)
+                        memcpy(mb, mcp->mb, 8 * sizeof(*mb));
+                if (dwords)
+                        *dwords = mcp->mb[6];
         }
 
         return rval;
 }
 
 int
-qla2x00_set_idma_speed(scsi_qla_host_t *ha, uint16_t loop_id,
-    uint16_t port_speed, uint16_t *mb)
+qla2x00_disable_fce_trace(scsi_qla_host_t *ha, uint64_t *wr, uint64_t *rd)
 {
         int rval;
         mbx_cmd_t mc;
         mbx_cmd_t *mcp = &mc;
 
-        if (!IS_IIDMA_CAPABLE(ha))
+        if (!IS_FWI2_CAPABLE(ha))
                 return QLA_FUNCTION_FAILED;
 
         DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
 
-        mcp->mb[0] = MBC_PORT_PARAMS;
-        mcp->mb[1] = loop_id;
-        mcp->mb[2] = BIT_0;
-        mcp->mb[3] = port_speed & (BIT_2|BIT_1|BIT_0);
-        mcp->mb[4] = mcp->mb[5] = 0;
-        mcp->out_mb = MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
-        mcp->in_mb = MBX_5|MBX_4|MBX_3|MBX_1|MBX_0;
+        mcp->mb[0] = MBC_TRACE_CONTROL;
+        mcp->mb[1] = TC_FCE_DISABLE;
+        mcp->mb[2] = TC_FCE_DISABLE_TRACE;
+        mcp->out_mb = MBX_2|MBX_1|MBX_0;
+        mcp->in_mb = MBX_9|MBX_8|MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|
+            MBX_1|MBX_0;
         mcp->tov = 30;
         mcp->flags = 0;
         rval = qla2x00_mailbox_command(ha, mcp);
-
-        /* Return mailbox statuses. */
-        if (mb != NULL) {
-                mb[0] = mcp->mb[0];
-                mb[1] = mcp->mb[1];
-                mb[3] = mcp->mb[3];
-                mb[4] = mcp->mb[4];
-                mb[5] = mcp->mb[5];
-        }
-
         if (rval != QLA_SUCCESS) {
-                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
-                    ha->host_no, rval));
+                DEBUG2_3_11(printk("%s(%ld): failed=%x mb[0]=%x mb[1]=%x.\n",
+                    __func__, ha->host_no, rval, mcp->mb[0], mcp->mb[1]));
         } else {
                 DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
+
+                if (wr)
+                        *wr = (uint64_t) mcp->mb[5] << 48 |
+                            (uint64_t) mcp->mb[4] << 32 |
+                            (uint64_t) mcp->mb[3] << 16 |
+                            (uint64_t) mcp->mb[2];
+                if (rd)
+                        *rd = (uint64_t) mcp->mb[9] << 48 |
+                            (uint64_t) mcp->mb[8] << 32 |
+                            (uint64_t) mcp->mb[7] << 16 |
+                            (uint64_t) mcp->mb[6];
         }
 
         return rval;
 }
 
-/*
- * qla24xx_get_vp_database
- *      Get the VP's database for all configured ports.
- *
- * Input:
- *      ha = adapter block pointer.
- *      size = size of initialization control block.
- *
- * Returns:
- *      qla2x00 local function return status code.
- *
- * Context:
- *      Kernel context.
- */
 int
-qla24xx_get_vp_database(scsi_qla_host_t *ha, uint16_t size)
+qla2x00_read_sfp(scsi_qla_host_t *ha, dma_addr_t sfp_dma, uint16_t addr,
+    uint16_t off, uint16_t count)
 {
         int rval;
         mbx_cmd_t mc;
         mbx_cmd_t *mcp = &mc;
 
-        DEBUG11(printk("scsi(%ld):%s - entered.\n",
-            ha->host_no, __func__));
+        if (!IS_FWI2_CAPABLE(ha))
+                return QLA_FUNCTION_FAILED;
 
-        mcp->mb[0] = MBC_MID_GET_VP_DATABASE;
-        mcp->mb[2] = MSW(ha->init_cb_dma);
-        mcp->mb[3] = LSW(ha->init_cb_dma);
-        mcp->mb[4] = 0;
-        mcp->mb[5] = 0;
-        mcp->mb[6] = MSW(MSD(ha->init_cb_dma));
-        mcp->mb[7] = LSW(MSD(ha->init_cb_dma));
-        mcp->out_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
-        mcp->in_mb = MBX_1|MBX_0;
-        mcp->buf_size = size;
-        mcp->flags = MBX_DMA_OUT;
-        mcp->tov = MBX_TOV_SECONDS;
+        DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
+
+        mcp->mb[0] = MBC_READ_SFP;
+        mcp->mb[1] = addr;
+        mcp->mb[2] = MSW(sfp_dma);
+        mcp->mb[3] = LSW(sfp_dma);
+        mcp->mb[6] = MSW(MSD(sfp_dma));
+        mcp->mb[7] = LSW(MSD(sfp_dma));
+        mcp->mb[8] = count;
+        mcp->mb[9] = off;
+        mcp->mb[10] = 0;
+        mcp->out_mb = MBX_10|MBX_9|MBX_8|MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0;
+        mcp->in_mb = MBX_0;
+        mcp->tov = 30;
+        mcp->flags = 0;
         rval = qla2x00_mailbox_command(ha, mcp);
 
         if (rval != QLA_SUCCESS) {
-                /*EMPTY*/
-                DEBUG2_3_11(printk("%s(%ld): failed=%x "
-                    "mb0=%x.\n",
-                    __func__, ha->host_no, rval, mcp->mb[0]));
+                DEBUG2_3_11(printk("%s(%ld): failed=%x (%x).\n", __func__,
+                    ha->host_no, rval, mcp->mb[0]));
         } else {
-                /*EMPTY*/
-                DEBUG11(printk("%s(%ld): done.\n",
-                    __func__, ha->host_no));
+                DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
         }
 
         return rval;
 }
 
 int
-qla24xx_get_vp_entry(scsi_qla_host_t *ha, uint16_t size, int vp_id)
+qla2x00_set_idma_speed(scsi_qla_host_t *ha, uint16_t loop_id,
+    uint16_t port_speed, uint16_t *mb)
 {
         int rval;
         mbx_cmd_t mc;
         mbx_cmd_t *mcp = &mc;
 
+        if (!IS_IIDMA_CAPABLE(ha))
+                return QLA_FUNCTION_FAILED;
+
         DEBUG11(printk("%s(%ld): entered.\n", __func__, ha->host_no));
 
-        mcp->mb[0] = MBC_MID_GET_VP_ENTRY;
-        mcp->mb[2] = MSW(ha->init_cb_dma);
-        mcp->mb[3] = LSW(ha->init_cb_dma);
-        mcp->mb[4] = 0;
-        mcp->mb[5] = 0;
-        mcp->mb[6] = MSW(MSD(ha->init_cb_dma));
-        mcp->mb[7] = LSW(MSD(ha->init_cb_dma));
-        mcp->mb[9] = vp_id;
-        mcp->out_mb = MBX_9|MBX_7|MBX_6|MBX_3|MBX_2|MBX_0;
-        mcp->in_mb = MBX_0;
-        mcp->buf_size = size;
-        mcp->flags = MBX_DMA_OUT;
+        mcp->mb[0] = MBC_PORT_PARAMS;
+        mcp->mb[1] = loop_id;
+        mcp->mb[2] = BIT_0;
+        mcp->mb[3] = port_speed & (BIT_2|BIT_1|BIT_0);
+        mcp->mb[4] = mcp->mb[5] = 0;
+        mcp->out_mb = MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
+        mcp->in_mb = MBX_5|MBX_4|MBX_3|MBX_1|MBX_0;
         mcp->tov = 30;
+        mcp->flags = 0;
         rval = qla2x00_mailbox_command(ha, mcp);
 
+        /* Return mailbox statuses. */
+        if (mb != NULL) {
+                mb[0] = mcp->mb[0];
+                mb[1] = mcp->mb[1];
+                mb[3] = mcp->mb[3];
+                mb[4] = mcp->mb[4];
+                mb[5] = mcp->mb[5];
+        }
+
         if (rval != QLA_SUCCESS) {
-                /*EMPTY*/
-                DEBUG2_3_11(printk("qla24xx_get_vp_entry(%ld): failed=%x "
-                    "mb0=%x.\n",
-                    ha->host_no, rval, mcp->mb[0]));
+                DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
+                    ha->host_no, rval));
         } else {
-                /*EMPTY*/
-                DEBUG11(printk("qla24xx_get_vp_entry(%ld): done.\n",
-                    ha->host_no));
+                DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
         }
 
         return rval;
@@ -2873,7 +2731,7 @@ qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
         DEBUG11(printk("%s(%ld): entered. Enabling index %d\n", __func__,
             ha->host_no, vp_index));
 
-        if (vp_index == 0 || vp_index >= MAX_MULTI_ID_LOOP)
+        if (vp_index == 0 || vp_index >= ha->max_npiv_vports)
                 return QLA_PARAMETER_ERROR;
 
         vce = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &vce_dma);
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 821ee74aadc6..cf784cdafb01 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -39,7 +39,7 @@ qla2x00_vp_stop_timer(scsi_qla_host_t *vha)
         }
 }
 
-uint32_t
+static uint32_t
 qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
 {
         uint32_t vp_id;
@@ -47,16 +47,15 @@ qla24xx_allocate_vp_id(scsi_qla_host_t *vha)
 
         /* Find an empty slot and assign an vp_id */
         down(&ha->vport_sem);
-        vp_id = find_first_zero_bit((unsigned long *)ha->vp_idx_map,
-                                MAX_MULTI_ID_FABRIC);
-        if (vp_id > MAX_MULTI_ID_FABRIC) {
-                DEBUG15(printk ("vp_id %d is bigger than MAX_MULTI_ID_FABRID\n",
-                    vp_id));
+        vp_id = find_first_zero_bit(ha->vp_idx_map, ha->max_npiv_vports + 1);
+        if (vp_id > ha->max_npiv_vports) {
+                DEBUG15(printk ("vp_id %d is bigger than max-supported %d.\n",
+                    vp_id, ha->max_npiv_vports));
                 up(&ha->vport_sem);
                 return vp_id;
         }
 
-        set_bit(vp_id, (unsigned long *)ha->vp_idx_map);
+        set_bit(vp_id, ha->vp_idx_map);
         ha->num_vhosts++;
         vha->vp_idx = vp_id;
         list_add_tail(&vha->vp_list, &ha->vp_list);
@@ -73,12 +72,12 @@ qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
         down(&ha->vport_sem);
         vp_id = vha->vp_idx;
         ha->num_vhosts--;
-        clear_bit(vp_id, (unsigned long *)ha->vp_idx_map);
+        clear_bit(vp_id, ha->vp_idx_map);
         list_del(&vha->vp_list);
         up(&ha->vport_sem);
 }
 
-scsi_qla_host_t *
+static scsi_qla_host_t *
 qla24xx_find_vhost_by_name(scsi_qla_host_t *ha, uint8_t *port_name)
 {
         scsi_qla_host_t *vha;
@@ -216,11 +215,7 @@ qla2x00_alert_all_vps(scsi_qla_host_t *ha, uint16_t *mb)
         if (ha->parent)
                 return;
 
-        i = find_next_bit((unsigned long *)ha->vp_idx_map,
-            MAX_MULTI_ID_FABRIC + 1, 1);
-        for (;i <= MAX_MULTI_ID_FABRIC;
-            i = find_next_bit((unsigned long *)ha->vp_idx_map,
-            MAX_MULTI_ID_FABRIC + 1, i + 1)) {
+        for_each_mapped_vp_idx(ha, i) {
                 vp_idx_matched = 0;
 
                 list_for_each_entry(vha, &ha->vp_list, vp_list) {
@@ -270,7 +265,7 @@ qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
         qla24xx_enable_vp(vha);
 }
 
-int
+static int
 qla2x00_do_dpc_vp(scsi_qla_host_t *vha)
 {
         if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) {
@@ -311,11 +306,7 @@ qla2x00_do_dpc_all_vps(scsi_qla_host_t *ha)
 
         clear_bit(VP_DPC_NEEDED, &ha->dpc_flags);
 
-        i = find_next_bit((unsigned long *)ha->vp_idx_map,
-            MAX_MULTI_ID_FABRIC + 1, 1);
-        for (;i <= MAX_MULTI_ID_FABRIC;
-            i = find_next_bit((unsigned long *)ha->vp_idx_map,
-            MAX_MULTI_ID_FABRIC + 1, i + 1)) {
+        for_each_mapped_vp_idx(ha, i) {
                 vp_idx_matched = 0;
 
                 list_for_each_entry(vha, &ha->vp_list, vp_list) {
@@ -350,15 +341,17 @@ qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 
         /* Check up unique WWPN */
         u64_to_wwn(fc_vport->port_name, port_name);
+        if (!memcmp(port_name, ha->port_name, WWN_SIZE))
+                return VPCERR_BAD_WWN;
         vha = qla24xx_find_vhost_by_name(ha, port_name);
         if (vha)
                 return VPCERR_BAD_WWN;
 
         /* Check up max-npiv-supports */
         if (ha->num_vhosts > ha->max_npiv_vports) {
-                DEBUG15(printk("scsi(%ld): num_vhosts %d is bigger than "
-                    "max_npv_vports %d.\n", ha->host_no,
-                    (uint16_t) ha->num_vhosts, (int) ha->max_npiv_vports));
+                DEBUG15(printk("scsi(%ld): num_vhosts %ud is bigger than "
+                    "max_npv_vports %ud.\n", ha->host_no,
+                    ha->num_vhosts, ha->max_npiv_vports));
                 return VPCERR_UNSUPPORTED;
         }
         return 0;
@@ -412,8 +405,9 @@ qla24xx_create_vhost(struct fc_vport *fc_vport)
         }
         vha->mgmt_svr_loop_id = 10 + vha->vp_idx;
 
-        init_MUTEX(&vha->mbx_cmd_sem);
-        init_MUTEX_LOCKED(&vha->mbx_intr_sem);
+        init_completion(&vha->mbx_cmd_comp);
+        complete(&vha->mbx_cmd_comp);
+        init_completion(&vha->mbx_intr_comp);
 
         INIT_LIST_HEAD(&vha->list);
         INIT_LIST_HEAD(&vha->fcports);
@@ -450,7 +444,7 @@ qla24xx_create_vhost(struct fc_vport *fc_vport)
         num_hosts++;
 
         down(&ha->vport_sem);
-        set_bit(vha->vp_idx, (unsigned long *)ha->vp_idx_map);
+        set_bit(vha->vp_idx, ha->vp_idx_map);
         ha->cur_vport_count++;
         up(&ha->vport_sem);
 
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 8ecc0470b8f3..aba1e6d48066 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -105,13 +105,12 @@ static int qla2xxx_eh_abort(struct scsi_cmnd *);
 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
-static int qla2x00_loop_reset(scsi_qla_host_t *ha);
 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
 
 static int qla2x00_change_queue_depth(struct scsi_device *, int);
 static int qla2x00_change_queue_type(struct scsi_device *, int);
 
-struct scsi_host_template qla2x00_driver_template = {
+static struct scsi_host_template qla2x00_driver_template = {
         .module                 = THIS_MODULE,
         .name                   = QLA2XXX_DRIVER_NAME,
         .queuecommand           = qla2x00_queuecommand,
@@ -179,13 +178,6 @@ struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;
  * Timer routines
  */
 
-void qla2x00_timer(scsi_qla_host_t *);
-
-__inline__ void qla2x00_start_timer(scsi_qla_host_t *,
-    void *, unsigned long);
-static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
-__inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
-
 __inline__ void
 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
 {
@@ -203,7 +195,7 @@ qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
         mod_timer(&ha->timer, jiffies + interval * HZ);
 }
 
-__inline__ void
+static __inline__ void
 qla2x00_stop_timer(scsi_qla_host_t *ha)
 {
         del_timer_sync(&ha->timer);
@@ -214,12 +206,11 @@ static int qla2x00_do_dpc(void *data);
 
 static void qla2x00_rst_aen(scsi_qla_host_t *);
 
-uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
-void qla2x00_mem_free(scsi_qla_host_t *ha);
+static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
+static void qla2x00_mem_free(scsi_qla_host_t *ha);
 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
-void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
 
 /* -------------------------------------------------------------------------- */
 
@@ -1060,7 +1051,7 @@ eh_host_reset_lock:
 * Returns:
 *      0 = success
 */
-static int
+int
 qla2x00_loop_reset(scsi_qla_host_t *ha)
 {
         int ret;
@@ -1479,8 +1470,7 @@ qla2x00_set_isp_flags(scsi_qla_host_t *ha)
 static int
 qla2x00_iospace_config(scsi_qla_host_t *ha)
 {
-        unsigned long   pio, pio_len, pio_flags;
-        unsigned long   mmio, mmio_len, mmio_flags;
+        resource_size_t pio;
 
         if (pci_request_selected_regions(ha->pdev, ha->bars,
             QLA2XXX_DRIVER_NAME)) {
@@ -1495,10 +1485,8 @@ qla2x00_iospace_config(scsi_qla_host_t *ha)
 
         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
         pio = pci_resource_start(ha->pdev, 0);
-        pio_len = pci_resource_len(ha->pdev, 0);
-        pio_flags = pci_resource_flags(ha->pdev, 0);
-        if (pio_flags & IORESOURCE_IO) {
-                if (pio_len < MIN_IOBASE_LEN) {
+        if (pci_resource_flags(ha->pdev, 0) & IORESOURCE_IO) {
+                if (pci_resource_len(ha->pdev, 0) < MIN_IOBASE_LEN) {
                         qla_printk(KERN_WARNING, ha,
                             "Invalid PCI I/O region size (%s)...\n",
                                 pci_name(ha->pdev));
@@ -1511,28 +1499,23 @@ qla2x00_iospace_config(scsi_qla_host_t *ha)
                 pio = 0;
         }
         ha->pio_address = pio;
-        ha->pio_length = pio_len;
 
 skip_pio:
         /* Use MMIO operations for all accesses. */
-        mmio = pci_resource_start(ha->pdev, 1);
-        mmio_len = pci_resource_len(ha->pdev, 1);
-        mmio_flags = pci_resource_flags(ha->pdev, 1);
-
-        if (!(mmio_flags & IORESOURCE_MEM)) {
+        if (!(pci_resource_flags(ha->pdev, 1) & IORESOURCE_MEM)) {
                 qla_printk(KERN_ERR, ha,
-                    "region #0 not an MMIO resource (%s), aborting\n",
+                    "region #1 not an MMIO resource (%s), aborting\n",
                     pci_name(ha->pdev));
                 goto iospace_error_exit;
         }
-        if (mmio_len < MIN_IOBASE_LEN) {
+        if (pci_resource_len(ha->pdev, 1) < MIN_IOBASE_LEN) {
                 qla_printk(KERN_ERR, ha,
                     "Invalid PCI mem region size (%s), aborting\n",
                         pci_name(ha->pdev));
                 goto iospace_error_exit;
         }
 
-        ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
+        ha->iobase = ioremap(pci_resource_start(ha->pdev, 1), MIN_IOBASE_LEN);
         if (!ha->iobase) {
                 qla_printk(KERN_ERR, ha,
                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
@@ -1701,9 +1684,10 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
         /* load the F/W, read paramaters, and init the H/W */
         ha->instance = num_hosts;
 
-        init_MUTEX(&ha->mbx_cmd_sem);
         init_MUTEX(&ha->vport_sem);
-        init_MUTEX_LOCKED(&ha->mbx_intr_sem);
+        init_completion(&ha->mbx_cmd_comp);
+        complete(&ha->mbx_cmd_comp);
+        init_completion(&ha->mbx_intr_comp);
 
         INIT_LIST_HEAD(&ha->list);
         INIT_LIST_HEAD(&ha->fcports);
@@ -1807,6 +1791,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 
         qla2x00_init_host_attr(ha);
 
+        qla2x00_dfs_setup(ha);
+
         qla_printk(KERN_INFO, ha, "\n"
             " QLogic Fibre Channel HBA Driver: %s\n"
             "  QLogic %s - %s\n"
@@ -1838,6 +1824,8 @@ qla2x00_remove_one(struct pci_dev *pdev)
 
         ha = pci_get_drvdata(pdev);
 
+        qla2x00_dfs_remove(ha);
+
         qla2x00_free_sysfs_attr(ha);
 
         fc_remove_host(ha->host);
@@ -1871,8 +1859,11 @@ qla2x00_free_device(scsi_qla_host_t *ha)
                 kthread_stop(t);
         }
 
+        if (ha->flags.fce_enabled)
+                qla2x00_disable_fce_trace(ha, NULL, NULL);
+
         if (ha->eft)
-                qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
+                qla2x00_disable_eft_trace(ha);
 
         ha->flags.online = 0;
 
@@ -2016,7 +2007,7 @@ qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
 *      0  = success.
 *      1  = failure.
 */
-uint8_t
+static uint8_t
 qla2x00_mem_alloc(scsi_qla_host_t *ha)
 {
         char    name[16];
@@ -2213,7 +2204,7 @@ qla2x00_mem_alloc(scsi_qla_host_t *ha)
 * Input:
 *      ha = adapter block pointer.
 */
-void
+static void
 qla2x00_mem_free(scsi_qla_host_t *ha)
 {
         struct list_head        *fcpl, *fcptemp;
@@ -2228,6 +2219,10 @@ qla2x00_mem_free(scsi_qla_host_t *ha)
         /* free sp pool */
         qla2x00_free_sp_pool(ha);
 
+        if (ha->fce)
+                dma_free_coherent(&ha->pdev->dev, FCE_SIZE, ha->fce,
+                    ha->fce_dma);
+
         if (ha->fw_dump) {
                 if (ha->eft)
                         dma_free_coherent(&ha->pdev->dev,
@@ -2748,23 +2743,6 @@ qla2x00_timer(scsi_qla_host_t *ha)
         qla2x00_restart_timer(ha, WATCH_INTERVAL);
 }
 
-/* XXX(hch): crude hack to emulate a down_timeout() */
-int
-qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
-{
-        const unsigned int step = 100; /* msecs */
-        unsigned int iterations = jiffies_to_msecs(timeout)/100;
-
-        do {
-                if (!down_trylock(sema))
-                        return 0;
-                if (msleep_interruptible(step))
-                        break;
-        } while (--iterations > 0);
-
-        return -ETIMEDOUT;
-}
-
 /* Firmware interface routines. */
 
 #define FW_BLOBS        6
diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c
index ad2fa01bd233..b68fb73613ed 100644
--- a/drivers/scsi/qla2xxx/qla_sup.c
+++ b/drivers/scsi/qla2xxx/qla_sup.c
@@ -22,7 +22,7 @@ static void qla2x00_nv_write(scsi_qla_host_t *, uint16_t);
  * qla2x00_lock_nvram_access() -
  * @ha: HA context
  */
-void
+static void
 qla2x00_lock_nvram_access(scsi_qla_host_t *ha)
 {
         uint16_t data;
@@ -55,7 +55,7 @@ qla2x00_lock_nvram_access(scsi_qla_host_t *ha)
  * qla2x00_unlock_nvram_access() -
  * @ha: HA context
  */
-void
+static void
 qla2x00_unlock_nvram_access(scsi_qla_host_t *ha)
 {
         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
@@ -74,7 +74,7 @@ qla2x00_unlock_nvram_access(scsi_qla_host_t *ha)
  *
  * Returns the word read from nvram @addr.
  */
-uint16_t
+static uint16_t
 qla2x00_get_nvram_word(scsi_qla_host_t *ha, uint32_t addr)
 {
         uint16_t        data;
@@ -93,7 +93,7 @@ qla2x00_get_nvram_word(scsi_qla_host_t *ha, uint32_t addr)
  * @addr: Address in NVRAM to write
  * @data: word to program
  */
-void
+static void
 qla2x00_write_nvram_word(scsi_qla_host_t *ha, uint32_t addr, uint16_t data)
 {
         int count;
@@ -550,7 +550,7 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr,
         int ret;
         uint32_t liter, miter;
         uint32_t sec_mask, rest_addr, conf_addr;
-        uint32_t fdata, findex ;
+        uint32_t fdata, findex, cnt;
         uint8_t man_id, flash_id;
         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
         dma_addr_t optrom_dma;
@@ -690,8 +690,14 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t *dwptr, uint32_t faddr,
                             0xff0000) | ((fdata >> 16) & 0xff));
         }
 
-        /* Enable flash write-protection. */
+        /* Enable flash write-protection and wait for completion. */
         qla24xx_write_flash_dword(ha, flash_conf_to_access_addr(0x101), 0x9c);
+        for (cnt = 300; cnt &&
+            qla24xx_read_flash_dword(ha,
+                    flash_conf_to_access_addr(0x005)) & BIT_0;
+            cnt--) {
+                udelay(10);
+        }
 
         /* Disable flash write. */
         WRT_REG_DWORD(&reg->ctrl_status,
diff --git a/drivers/scsi/qla2xxx/qla_version.h b/drivers/scsi/qla2xxx/qla_version.h
index ae6f7a2fb19f..2c2f6b4697c7 100644
--- a/drivers/scsi/qla2xxx/qla_version.h
+++ b/drivers/scsi/qla2xxx/qla_version.h
@@ -7,7 +7,7 @@
 /*
  * Driver version
  */
-#define QLA2XXX_VERSION      "8.02.00-k5"
+#define QLA2XXX_VERSION      "8.02.00-k7"
 
 #define QLA_DRIVER_MAJOR_VER    8
 #define QLA_DRIVER_MINOR_VER    2
diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
index d692c713416a..cbe0a17ced5f 100644
--- a/drivers/scsi/qla4xxx/ql4_init.c
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -5,6 +5,7 @@
  * See LICENSE.qla4xxx for copyright and licensing details.
  */
 
+#include <scsi/iscsi_if.h>
 #include "ql4_def.h"
 #include "ql4_glbl.h"
 #include "ql4_dbg.h"
@@ -1305,7 +1306,8 @@ int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
                 atomic_set(&ddb_entry->relogin_timer, 0);
                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
-                iscsi_if_create_session_done(ddb_entry->conn);
+                iscsi_session_event(ddb_entry->sess,
+                                    ISCSI_KEVENT_CREATE_SESSION);
                 /*
                  * Change the lun state to READY in case the lun TIMEOUT before
                  * the device came back.
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c
index 4a154beb0d39..0f029d0d7315 100644
--- a/drivers/scsi/qla4xxx/ql4_isr.c
+++ b/drivers/scsi/qla4xxx/ql4_isr.c
@@ -123,15 +123,14 @@ static void qla4xxx_status_entry(struct scsi_qla_host *ha,
                         break;
 
                 /* Copy Sense Data into sense buffer. */
-                memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+                memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
 
                 sensebytecnt = le16_to_cpu(sts_entry->senseDataByteCnt);
                 if (sensebytecnt == 0)
                         break;
 
                 memcpy(cmd->sense_buffer, sts_entry->senseData,
-                       min(sensebytecnt,
-                           (uint16_t) sizeof(cmd->sense_buffer)));
+                       min_t(uint16_t, sensebytecnt, SCSI_SENSE_BUFFERSIZE));
 
                 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: sense key = %x, "
                               "ASC/ASCQ = %02x/%02x\n", ha->host_no,
@@ -208,8 +207,7 @@ static void qla4xxx_status_entry(struct scsi_qla_host *ha,
                                 break;
 
                         /* Copy Sense Data into sense buffer. */
-                        memset(cmd->sense_buffer, 0,
-                               sizeof(cmd->sense_buffer));
+                        memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
 
                         sensebytecnt =
                                 le16_to_cpu(sts_entry->senseDataByteCnt);
@@ -217,8 +215,7 @@ static void qla4xxx_status_entry(struct scsi_qla_host *ha,
                                 break;
 
                         memcpy(cmd->sense_buffer, sts_entry->senseData,
-                               min(sensebytecnt,
-                                   (uint16_t) sizeof(cmd->sense_buffer)));
+                               min_t(uint16_t, sensebytecnt, SCSI_SENSE_BUFFERSIZE));
 
                         DEBUG2(printk("scsi%ld:%d:%d:%d: %s: sense key = %x, "
                                       "ASC/ASCQ = %02x/%02x\n", ha->host_no,
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 89460d27c689..f55b9f7d9396 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -298,8 +298,7 @@ void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry)
                 return;
 
         if (ddb_entry->conn) {
-                iscsi_if_destroy_session_done(ddb_entry->conn);
-                iscsi_destroy_conn(ddb_entry->conn);
+                atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
                 iscsi_remove_session(ddb_entry->sess);
         }
         iscsi_free_session(ddb_entry->sess);
@@ -309,6 +308,7 @@ int qla4xxx_add_sess(struct ddb_entry *ddb_entry)
 {
         int err;
 
+        ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count;
         err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index);
         if (err) {
                 DEBUG2(printk(KERN_ERR "Could not add session.\n"));
@@ -321,9 +321,6 @@ int qla4xxx_add_sess(struct ddb_entry *ddb_entry)
                 DEBUG2(printk(KERN_ERR "Could not add connection.\n"));
                 return -ENOMEM;
         }
-
-        ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count;
-        iscsi_if_create_session_done(ddb_entry->conn);
         return 0;
 }
 
diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c
index 7a2e7986b038..65455ab1f3b9 100644
--- a/drivers/scsi/qlogicpti.c
+++ b/drivers/scsi/qlogicpti.c
@@ -871,11 +871,12 @@ static inline int load_cmd(struct scsi_cmnd *Cmnd, struct Command_Entry *cmd,
         struct scatterlist *sg, *s;
         int i, n;
 
-        if (Cmnd->use_sg) {
+        if (scsi_bufflen(Cmnd)) {
                 int sg_count;
 
-                sg = (struct scatterlist *) Cmnd->request_buffer;
-                sg_count = sbus_map_sg(qpti->sdev, sg, Cmnd->use_sg, Cmnd->sc_data_direction);
+                sg = scsi_sglist(Cmnd);
+                sg_count = sbus_map_sg(qpti->sdev, sg, scsi_sg_count(Cmnd),
+                                                      Cmnd->sc_data_direction);
 
                 ds = cmd->dataseg;
                 cmd->segment_cnt = sg_count;
@@ -914,16 +915,6 @@ static inline int load_cmd(struct scsi_cmnd *Cmnd, struct Command_Entry *cmd,
                         }
                         sg_count -= n;
                 }
-        } else if (Cmnd->request_bufflen) {
-                Cmnd->SCp.ptr = (char *)(unsigned long)
-                        sbus_map_single(qpti->sdev,
-                                        Cmnd->request_buffer,
-                                        Cmnd->request_bufflen,
-                                        Cmnd->sc_data_direction);
-
-                cmd->dataseg[0].d_base = (u32) ((unsigned long)Cmnd->SCp.ptr);
-                cmd->dataseg[0].d_count = Cmnd->request_bufflen;
-                cmd->segment_cnt = 1;
         } else {
                 cmd->dataseg[0].d_base = 0;
                 cmd->dataseg[0].d_count = 0;
@@ -1151,7 +1142,7 @@ static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti)
 
                 if (sts->state_flags & SF_GOT_SENSE)
                         memcpy(Cmnd->sense_buffer, sts->req_sense_data,
-                               sizeof(Cmnd->sense_buffer));
+                               SCSI_SENSE_BUFFERSIZE);
 
                 if (sts->hdr.entry_type == ENTRY_STATUS)
                         Cmnd->result =
@@ -1159,17 +1150,11 @@ static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti)
                 else
                         Cmnd->result = DID_ERROR << 16;
 
-                if (Cmnd->use_sg) {
+                if (scsi_bufflen(Cmnd))
                         sbus_unmap_sg(qpti->sdev,
-                                      (struct scatterlist *)Cmnd->request_buffer,
-                                      Cmnd->use_sg,
+                                      scsi_sglist(Cmnd), scsi_sg_count(Cmnd),
                                       Cmnd->sc_data_direction);
-                } else if (Cmnd->request_bufflen) {
-                        sbus_unmap_single(qpti->sdev,
-                                          (__u32)((unsigned long)Cmnd->SCp.ptr),
-                                          Cmnd->request_bufflen,
-                                          Cmnd->sc_data_direction);
-                }
+
                 qpti->cmd_count[Cmnd->device->id]--;
                 sbus_writew(out_ptr, qpti->qregs + MBOX5);
                 Cmnd->host_scribble = (unsigned char *) done_queue;
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 0fb1709ce5e3..1a9fba6a9f92 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -122,6 +122,11 @@ static const char *const scsi_device_types[] = {
         "Automation/Drive ",
 };
 
+/**
+ * scsi_device_type - Return 17 char string indicating device type.
+ * @type: type number to look up
+ */
+
 const char * scsi_device_type(unsigned type)
 {
         if (type == 0x1e)
@@ -136,32 +141,45 @@ const char * scsi_device_type(unsigned type)
 EXPORT_SYMBOL(scsi_device_type);
 
 struct scsi_host_cmd_pool {
-        struct kmem_cache       *slab;
-        unsigned int    users;
-        char            *name;
-        unsigned int    slab_flags;
-        gfp_t           gfp_mask;
+        struct kmem_cache       *cmd_slab;
+        struct kmem_cache       *sense_slab;
+        unsigned int            users;
+        char                    *cmd_name;
+        char                    *sense_name;
+        unsigned int            slab_flags;
+        gfp_t                   gfp_mask;
 };
 
 static struct scsi_host_cmd_pool scsi_cmd_pool = {
-        .name           = "scsi_cmd_cache",
+        .cmd_name       = "scsi_cmd_cache",
+        .sense_name     = "scsi_sense_cache",
         .slab_flags     = SLAB_HWCACHE_ALIGN,
 };
 
 static struct scsi_host_cmd_pool scsi_cmd_dma_pool = {
-        .name           = "scsi_cmd_cache(DMA)",
+        .cmd_name       = "scsi_cmd_cache(DMA)",
+        .sense_name     = "scsi_sense_cache(DMA)",
         .slab_flags     = SLAB_HWCACHE_ALIGN|SLAB_CACHE_DMA,
         .gfp_mask       = __GFP_DMA,
 };
 
 static DEFINE_MUTEX(host_cmd_pool_mutex);
 
+/**
+ * __scsi_get_command - Allocate a struct scsi_cmnd
+ * @shost: host to transmit command
+ * @gfp_mask: allocation mask
+ *
+ * Description: allocate a struct scsi_cmd from host's slab, recycling from the
+ *              host's free_list if necessary.
+ */
 struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *shost, gfp_t gfp_mask)
 {
         struct scsi_cmnd *cmd;
+        unsigned char *buf;
 
-        cmd = kmem_cache_alloc(shost->cmd_pool->slab,
-                        gfp_mask | shost->cmd_pool->gfp_mask);
+        cmd = kmem_cache_alloc(shost->cmd_pool->cmd_slab,
+                               gfp_mask | shost->cmd_pool->gfp_mask);
 
         if (unlikely(!cmd)) {
                 unsigned long flags;
@@ -173,19 +191,32 @@ struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *shost, gfp_t gfp_mask)
                         list_del_init(&cmd->list);
                 }
                 spin_unlock_irqrestore(&shost->free_list_lock, flags);
+
+                if (cmd) {
+                        buf = cmd->sense_buffer;
+                        memset(cmd, 0, sizeof(*cmd));
+                        cmd->sense_buffer = buf;
+                }
+        } else {
+                buf = kmem_cache_alloc(shost->cmd_pool->sense_slab,
+                                       gfp_mask | shost->cmd_pool->gfp_mask);
+                if (likely(buf)) {
+                        memset(cmd, 0, sizeof(*cmd));
+                        cmd->sense_buffer = buf;
+                } else {
+                        kmem_cache_free(shost->cmd_pool->cmd_slab, cmd);
+                        cmd = NULL;
+                }
         }
 
         return cmd;
 }
 EXPORT_SYMBOL_GPL(__scsi_get_command);
 
-/*
- * Function:    scsi_get_command()
- *
- * Purpose:     Allocate and setup a scsi command block
- *
- * Arguments:   dev     - parent scsi device
- *              gfp_mask- allocator flags
+/**
+ * scsi_get_command - Allocate and setup a scsi command block
+ * @dev: parent scsi device
+ * @gfp_mask: allocator flags
  *
  * Returns:     The allocated scsi command structure.
  */
@@ -202,7 +233,6 @@ struct scsi_cmnd *scsi_get_command(struct scsi_device *dev, gfp_t gfp_mask)
         if (likely(cmd != NULL)) {
                 unsigned long flags;
 
-                memset(cmd, 0, sizeof(*cmd));
                 cmd->device = dev;
                 init_timer(&cmd->eh_timeout);
                 INIT_LIST_HEAD(&cmd->list);
@@ -217,6 +247,12 @@ struct scsi_cmnd *scsi_get_command(struct scsi_device *dev, gfp_t gfp_mask)
 }
 EXPORT_SYMBOL(scsi_get_command);
 
+/**
+ * __scsi_put_command - Free a struct scsi_cmnd
+ * @shost: dev->host
+ * @cmd: Command to free
+ * @dev: parent scsi device
+ */
 void __scsi_put_command(struct Scsi_Host *shost, struct scsi_cmnd *cmd,
                         struct device *dev)
 {
@@ -230,19 +266,19 @@ void __scsi_put_command(struct Scsi_Host *shost, struct scsi_cmnd *cmd,
         }
         spin_unlock_irqrestore(&shost->free_list_lock, flags);
 
-        if (likely(cmd != NULL))
-                kmem_cache_free(shost->cmd_pool->slab, cmd);
+        if (likely(cmd != NULL)) {
+                kmem_cache_free(shost->cmd_pool->sense_slab,
+                                cmd->sense_buffer);
+                kmem_cache_free(shost->cmd_pool->cmd_slab, cmd);
+        }
 
         put_device(dev);
 }
 EXPORT_SYMBOL(__scsi_put_command);
 
-/*
- * Function:    scsi_put_command()
- *
- * Purpose:     Free a scsi command block
- *
- * Arguments:   cmd     - command block to free
+/**
+ * scsi_put_command - Free a scsi command block
+ * @cmd: command block to free
  *
  * Returns:     Nothing.
  *
@@ -263,12 +299,13 @@ void scsi_put_command(struct scsi_cmnd *cmd)
 }
 EXPORT_SYMBOL(scsi_put_command);
 
-/*
- * Function:    scsi_setup_command_freelist()
- *
- * Purpose:     Setup the command freelist for a scsi host.
+/**
+ * scsi_setup_command_freelist - Setup the command freelist for a scsi host.
+ * @shost: host to allocate the freelist for.
  *
- * Arguments:   shost   - host to allocate the freelist for.
+ * Description: The command freelist protects against system-wide out of memory
+ * deadlock by preallocating one SCSI command structure for each host, so the
+ * system can always write to a swap file on a device associated with that host.
  *
  * Returns:     Nothing.
  */
@@ -282,16 +319,24 @@ int scsi_setup_command_freelist(struct Scsi_Host *shost)
 
         /*
          * Select a command slab for this host and create it if not
-         * yet existant.
+         * yet existent.
          */
         mutex_lock(&host_cmd_pool_mutex);
         pool = (shost->unchecked_isa_dma ? &scsi_cmd_dma_pool : &scsi_cmd_pool);
         if (!pool->users) {
-                pool->slab = kmem_cache_create(pool->name,
-                                sizeof(struct scsi_cmnd), 0,
-                                pool->slab_flags, NULL);
-                if (!pool->slab)
+                pool->cmd_slab = kmem_cache_create(pool->cmd_name,
+                                                   sizeof(struct scsi_cmnd), 0,
+                                                   pool->slab_flags, NULL);
+                if (!pool->cmd_slab)
+                        goto fail;
+
+                pool->sense_slab = kmem_cache_create(pool->sense_name,
+                                                     SCSI_SENSE_BUFFERSIZE, 0,
+                                                     pool->slab_flags, NULL);
+                if (!pool->sense_slab) {
+                        kmem_cache_destroy(pool->cmd_slab);
                         goto fail;
+                }
         }
 
         pool->users++;
@@ -301,29 +346,36 @@ int scsi_setup_command_freelist(struct Scsi_Host *shost)
         /*
          * Get one backup command for this host.
          */
-        cmd = kmem_cache_alloc(shost->cmd_pool->slab,
-                        GFP_KERNEL | shost->cmd_pool->gfp_mask);
+        cmd = kmem_cache_alloc(shost->cmd_pool->cmd_slab,
+                               GFP_KERNEL | shost->cmd_pool->gfp_mask);
         if (!cmd)
                 goto fail2;
-        list_add(&cmd->list, &shost->free_list);                
+
+        cmd->sense_buffer = kmem_cache_alloc(shost->cmd_pool->sense_slab,
+                                             GFP_KERNEL |
+                                             shost->cmd_pool->gfp_mask);
+        if (!cmd->sense_buffer)
+                goto fail2;
+
+        list_add(&cmd->list, &shost->free_list);
         return 0;
 
  fail2:
-        if (!--pool->users)
-                kmem_cache_destroy(pool->slab);
-        return -ENOMEM;
+        if (cmd)
+                kmem_cache_free(shost->cmd_pool->cmd_slab, cmd);
+        mutex_lock(&host_cmd_pool_mutex);
+        if (!--pool->users) {
+                kmem_cache_destroy(pool->cmd_slab);
+                kmem_cache_destroy(pool->sense_slab);
+        }
  fail:
         mutex_unlock(&host_cmd_pool_mutex);
         return -ENOMEM;
-
 }
 
-/*
- * Function:    scsi_destroy_command_freelist()
- *
- * Purpose:     Release the command freelist for a scsi host.
- *
- * Arguments:   shost   - host that's freelist is going to be destroyed
+/**
+ * scsi_destroy_command_freelist - Release the command freelist for a scsi host.
+ * @shost: host whose freelist is going to be destroyed
  */
 void scsi_destroy_command_freelist(struct Scsi_Host *shost)
 {
@@ -332,12 +384,16 @@ void scsi_destroy_command_freelist(struct Scsi_Host *shost)
 
                 cmd = list_entry(shost->free_list.next, struct scsi_cmnd, list);
                 list_del_init(&cmd->list);
-                kmem_cache_free(shost->cmd_pool->slab, cmd);
+                kmem_cache_free(shost->cmd_pool->sense_slab,
+                                cmd->sense_buffer);
+                kmem_cache_free(shost->cmd_pool->cmd_slab, cmd);
         }
 
         mutex_lock(&host_cmd_pool_mutex);
-        if (!--shost->cmd_pool->users)
-                kmem_cache_destroy(shost->cmd_pool->slab);
+        if (!--shost->cmd_pool->users) {
+                kmem_cache_destroy(shost->cmd_pool->cmd_slab);
+                kmem_cache_destroy(shost->cmd_pool->sense_slab);
+        }
         mutex_unlock(&host_cmd_pool_mutex);
 }
 
@@ -441,8 +497,12 @@ void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
 }
 #endif
 
-/* 
- * Assign a serial number to the request for error recovery
+/**
+ * scsi_cmd_get_serial - Assign a serial number to a command
+ * @host: the scsi host
+ * @cmd: command to assign serial number to
+ *
+ * Description: a serial number identifies a request for error recovery
  * and debugging purposes.  Protected by the Host_Lock of host.
  */
 static inline void scsi_cmd_get_serial(struct Scsi_Host *host, struct scsi_cmnd *cmd)
@@ -452,14 +512,12 @@ static inline void scsi_cmd_get_serial(struct Scsi_Host *host, struct scsi_cmnd
                 cmd->serial_number = host->cmd_serial_number++;
 }
 
-/*
- * Function:    scsi_dispatch_command
- *
- * Purpose:     Dispatch a command to the low-level driver.
- *
- * Arguments:   cmd - command block we are dispatching.
+/**
+ * scsi_dispatch_command - Dispatch a command to the low-level driver.
+ * @cmd: command block we are dispatching.
  *
- * Notes:
+ * Return: nonzero return request was rejected and device's queue needs to be
+ * plugged.
  */
 int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 {
@@ -585,7 +643,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 
 /**
  * scsi_req_abort_cmd -- Request command recovery for the specified command
- * cmd: pointer to the SCSI command of interest
+ * @cmd: pointer to the SCSI command of interest
  *
  * This function requests that SCSI Core start recovery for the
  * command by deleting the timer and adding the command to the eh
@@ -606,9 +664,9 @@ EXPORT_SYMBOL(scsi_req_abort_cmd);
  * @cmd: The SCSI Command for which a low-level device driver (LLDD) gives
  * ownership back to SCSI Core -- i.e. the LLDD has finished with it.
  *
- * This function is the mid-level's (SCSI Core) interrupt routine, which
- * regains ownership of the SCSI command (de facto) from a LLDD, and enqueues
- * the command to the done queue for further processing.
+ * Description: This function is the mid-level's (SCSI Core) interrupt routine,
+ * which regains ownership of the SCSI command (de facto) from a LLDD, and
+ * enqueues the command to the done queue for further processing.
  *
  * This is the producer of the done queue who enqueues at the tail.
  *
@@ -617,7 +675,7 @@ EXPORT_SYMBOL(scsi_req_abort_cmd);
 static void scsi_done(struct scsi_cmnd *cmd)
 {
         /*
-         * We don't have to worry about this one timing out any more.
+         * We don't have to worry about this one timing out anymore.
          * If we are unable to remove the timer, then the command
          * has already timed out.  In which case, we have no choice but to
          * let the timeout function run, as we have no idea where in fact
@@ -660,10 +718,11 @@ static struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
         return *(struct scsi_driver **)cmd->request->rq_disk->private_data;
 }
 
-/*
- * Function:    scsi_finish_command
+/**
+ * scsi_finish_command - cleanup and pass command back to upper layer
+ * @cmd: the command
  *
- * Purpose:     Pass command off to upper layer for finishing of I/O
+ * Description: Pass command off to upper layer for finishing of I/O
  *              request, waking processes that are waiting on results,
  *              etc.
  */
@@ -708,18 +767,14 @@ void scsi_finish_command(struct scsi_cmnd *cmd)
 }
 EXPORT_SYMBOL(scsi_finish_command);
 
-/*
- * Function:    scsi_adjust_queue_depth()
- *
- * Purpose:     Allow low level drivers to tell us to change the queue depth
- *              on a specific SCSI device
- *
- * Arguments:   sdev    - SCSI Device in question
- *              tagged  - Do we use tagged queueing (non-0) or do we treat
- *                        this device as an untagged device (0)
- *              tags    - Number of tags allowed if tagged queueing enabled,
- *                        or number of commands the low level driver can
- *                        queue up in non-tagged mode (as per cmd_per_lun).
+/**
+ * scsi_adjust_queue_depth - Let low level drivers change a device's queue depth
+ * @sdev: SCSI Device in question
+ * @tagged: Do we use tagged queueing (non-0) or do we treat
+ *          this device as an untagged device (0)
+ * @tags: Number of tags allowed if tagged queueing enabled,
+ *        or number of commands the low level driver can
+ *        queue up in non-tagged mode (as per cmd_per_lun).
  *
  * Returns:     Nothing
  *
@@ -742,8 +797,8 @@ void scsi_adjust_queue_depth(struct scsi_device *sdev, int tagged, int tags)
 
         spin_lock_irqsave(sdev->request_queue->queue_lock, flags);
 
-        /* Check to see if the queue is managed by the block layer
-         * if it is, and we fail to adjust the depth, exit */
+        /* Check to see if the queue is managed by the block layer.
+         * If it is, and we fail to adjust the depth, exit. */
         if (blk_queue_tagged(sdev->request_queue) &&
             blk_queue_resize_tags(sdev->request_queue, tags) != 0)
                 goto out;
@@ -772,20 +827,17 @@ void scsi_adjust_queue_depth(struct scsi_device *sdev, int tagged, int tags)
 }
 EXPORT_SYMBOL(scsi_adjust_queue_depth);
 
-/*
- * Function:    scsi_track_queue_full()
+/**
+ * scsi_track_queue_full - track QUEUE_FULL events to adjust queue depth
+ * @sdev: SCSI Device in question
+ * @depth: Current number of outstanding SCSI commands on this device,
+ *         not counting the one returned as QUEUE_FULL.
  *
- * Purpose:     This function will track successive QUEUE_FULL events on a
+ * Description: This function will track successive QUEUE_FULL events on a
  *              specific SCSI device to determine if and when there is a
  *              need to adjust the queue depth on the device.
  *
- * Arguments:   sdev    - SCSI Device in question
- *              depth   - Current number of outstanding SCSI commands on
- *                        this device, not counting the one returned as
- *                        QUEUE_FULL.
- *
- * Returns:     0 - No change needed
- *              >0 - Adjust queue depth to this new depth
+ * Returns:     0 - No change needed, >0 - Adjust queue depth to this new depth,
  *              -1 - Drop back to untagged operation using host->cmd_per_lun
  *                      as the untagged command depth
  *
@@ -824,10 +876,10 @@ int scsi_track_queue_full(struct scsi_device *sdev, int depth)
 EXPORT_SYMBOL(scsi_track_queue_full);
 
 /**
- * scsi_device_get  -  get an addition reference to a scsi_device
+ * scsi_device_get  -  get an additional reference to a scsi_device
  * @sdev:       device to get a reference to
  *
- * Gets a reference to the scsi_device and increments the use count
+ * Description: Gets a reference to the scsi_device and increments the use count
  * of the underlying LLDD module.  You must hold host_lock of the
  * parent Scsi_Host or already have a reference when calling this.
  */
@@ -849,8 +901,8 @@ EXPORT_SYMBOL(scsi_device_get);
  * scsi_device_put  -  release a reference to a scsi_device
  * @sdev:       device to release a reference on.
  *
- * Release a reference to the scsi_device and decrements the use count
- * of the underlying LLDD module.  The device is freed once the last
+ * Description: Release a reference to the scsi_device and decrements the use
+ * count of the underlying LLDD module.  The device is freed once the last
  * user vanishes.
  */
 void scsi_device_put(struct scsi_device *sdev)
@@ -867,7 +919,7 @@ void scsi_device_put(struct scsi_device *sdev)
 }
 EXPORT_SYMBOL(scsi_device_put);
 
-/* helper for shost_for_each_device, thus not documented */
+/* helper for shost_for_each_device, see that for documentation */
 struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *shost,
                                            struct scsi_device *prev)
 {
@@ -895,6 +947,8 @@ EXPORT_SYMBOL(__scsi_iterate_devices);
 /**
  * starget_for_each_device  -  helper to walk all devices of a target
  * @starget:    target whose devices we want to iterate over.
+ * @data:       Opaque passed to each function call.
+ * @fn:         Function to call on each device
  *
  * This traverses over each device of @starget.  The devices have
  * a reference that must be released by scsi_host_put when breaking
@@ -946,13 +1000,13 @@ EXPORT_SYMBOL(__starget_for_each_device);
  * @starget:    SCSI target pointer
  * @lun:        SCSI Logical Unit Number
  *
- * Looks up the scsi_device with the specified @lun for a give
- * @starget. The returned scsi_device does not have an additional
+ * Description: Looks up the scsi_device with the specified @lun for a given
+ * @starget.  The returned scsi_device does not have an additional
  * reference.  You must hold the host's host_lock over this call and
  * any access to the returned scsi_device.
  *
- * Note:  The only reason why drivers would want to use this is because
- * they're need to access the device list in irq context.  Otherwise you
+ * Note:  The only reason why drivers should use this is because
+ * they need to access the device list in irq context.  Otherwise you
  * really want to use scsi_device_lookup_by_target instead.
  **/
 struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *starget,
@@ -974,9 +1028,9 @@ EXPORT_SYMBOL(__scsi_device_lookup_by_target);
  * @starget:    SCSI target pointer
  * @lun:        SCSI Logical Unit Number
  *
- * Looks up the scsi_device with the specified @channel, @id, @lun for a
- * give host.  The returned scsi_device has an additional reference that
- * needs to be release with scsi_host_put once you're done with it.
+ * Description: Looks up the scsi_device with the specified @channel, @id, @lun
+ * for a given host.  The returned scsi_device has an additional reference that
+ * needs to be released with scsi_device_put once you're done with it.
  **/
 struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *starget,
                                                  uint lun)
@@ -996,19 +1050,19 @@ struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *starget,
 EXPORT_SYMBOL(scsi_device_lookup_by_target);
 
 /**
- * scsi_device_lookup - find a device given the host (UNLOCKED)
+ * __scsi_device_lookup - find a device given the host (UNLOCKED)
  * @shost:      SCSI host pointer
  * @channel:    SCSI channel (zero if only one channel)
- * @pun:        SCSI target number (physical unit number)
+ * @id:         SCSI target number (physical unit number)
  * @lun:        SCSI Logical Unit Number
  *
- * Looks up the scsi_device with the specified @channel, @id, @lun for a
- * give host. The returned scsi_device does not have an additional reference.
- * You must hold the host's host_lock over this call and any access to the
- * returned scsi_device.
+ * Description: Looks up the scsi_device with the specified @channel, @id, @lun
+ * for a given host. The returned scsi_device does not have an additional
+ * reference.  You must hold the host's host_lock over this call and any access
+ * to the returned scsi_device.
  *
  * Note:  The only reason why drivers would want to use this is because
- * they're need to access the device list in irq context.  Otherwise you
+ * they need to access the device list in irq context.  Otherwise you
  * really want to use scsi_device_lookup instead.
  **/
 struct scsi_device *__scsi_device_lookup(struct Scsi_Host *shost,
@@ -1033,9 +1087,9 @@ EXPORT_SYMBOL(__scsi_device_lookup);
  * @id:         SCSI target number (physical unit number)
  * @lun:        SCSI Logical Unit Number
  *
- * Looks up the scsi_device with the specified @channel, @id, @lun for a
- * give host.  The returned scsi_device has an additional reference that
- * needs to be release with scsi_host_put once you're done with it.
+ * Description: Looks up the scsi_device with the specified @channel, @id, @lun
+ * for a given host.  The returned scsi_device has an additional reference that
+ * needs to be released with scsi_device_put once you're done with it.
  **/
 struct scsi_device *scsi_device_lookup(struct Scsi_Host *shost,
                 uint channel, uint id, uint lun)
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 46cae5a212de..82c06f0a9d02 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -329,7 +329,7 @@ int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done)
         if (done == NULL)
                 return 0;       /* assume mid level reprocessing command */
 
-        SCpnt->resid = 0;
+        scsi_set_resid(SCpnt, 0);
         if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) {
                 printk(KERN_INFO "scsi_debug: cmd ");
                 for (k = 0, len = SCpnt->cmd_len; k < len; ++k)
@@ -603,26 +603,16 @@ static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr,
         void * kaddr_off;
         struct scatterlist * sg;
 
-        if (0 == scp->request_bufflen)
+        if (0 == scsi_bufflen(scp))
                 return 0;
-        if (NULL == scp->request_buffer)
+        if (NULL == scsi_sglist(scp))
                 return (DID_ERROR << 16);
         if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) ||
               (scp->sc_data_direction == DMA_FROM_DEVICE)))
                 return (DID_ERROR << 16);
-        if (0 == scp->use_sg) {
-                req_len = scp->request_bufflen;
-                act_len = (req_len < arr_len) ? req_len : arr_len;
-                memcpy(scp->request_buffer, arr, act_len);
-                if (scp->resid)
-                        scp->resid -= act_len;
-                else
-                        scp->resid = req_len - act_len;
-                return 0;
-        }
         active = 1;
         req_len = act_len = 0;
-        scsi_for_each_sg(scp, sg, scp->use_sg, k) {
+        scsi_for_each_sg(scp, sg, scsi_sg_count(scp), k) {
                 if (active) {
                         kaddr = (unsigned char *)
                                 kmap_atomic(sg_page(sg), KM_USER0);
@@ -640,10 +630,10 @@ static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr,
                 }
                 req_len += sg->length;
         }
-        if (scp->resid)
-                scp->resid -= act_len;
+        if (scsi_get_resid(scp))
+                scsi_set_resid(scp, scsi_get_resid(scp) - act_len);
         else
-                scp->resid = req_len - act_len;
+                scsi_set_resid(scp, req_len - act_len);
         return 0;
 }
 
@@ -656,22 +646,15 @@ static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr,
         void * kaddr_off;
         struct scatterlist * sg;
 
-        if (0 == scp->request_bufflen)
+        if (0 == scsi_bufflen(scp))
                 return 0;
-        if (NULL == scp->request_buffer)
+        if (NULL == scsi_sglist(scp))
                 return -1;
         if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) ||
               (scp->sc_data_direction == DMA_TO_DEVICE)))
                 return -1;
-        if (0 == scp->use_sg) {
-                req_len = scp->request_bufflen;
-                len = (req_len < max_arr_len) ? req_len : max_arr_len;
-                memcpy(arr, scp->request_buffer, len);
-                return len;
-        }
-        sg = scsi_sglist(scp);
         req_len = fin = 0;
-        for (k = 0; k < scp->use_sg; ++k, sg = sg_next(sg)) {
+        scsi_for_each_sg(scp, sg, scsi_sg_count(scp), k) {
                 kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0);
                 if (NULL == kaddr)
                         return -1;
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 348cc5a6e3cd..b8de041bc0ae 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -276,11 +276,12 @@ static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
 }
 
 /**
- * scsi_dev_info_list_add: add one dev_info list entry.
+ * scsi_dev_info_list_add - add one dev_info list entry.
+ * @compatible: if true, null terminate short strings.  Otherwise space pad.
  * @vendor:     vendor string
  * @model:      model (product) string
  * @strflags:   integer string
- * @flag:       if strflags NULL, use this flag value
+ * @flags:      if strflags NULL, use this flag value
  *
  * Description:
  *      Create and add one dev_info entry for @vendor, @model, @strflags or
@@ -322,8 +323,7 @@ static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
 }
 
 /**
- * scsi_dev_info_list_add_str: parse dev_list and add to the
- * scsi_dev_info_list.
+ * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
  * @dev_list:   string of device flags to add
  *
  * Description:
@@ -374,15 +374,15 @@ static int scsi_dev_info_list_add_str(char *dev_list)
 }
 
 /**
- * get_device_flags - get device specific flags from the dynamic device
- * list. Called during scan time.
+ * get_device_flags - get device specific flags from the dynamic device list.
+ * @sdev:       &scsi_device to get flags for
  * @vendor:     vendor name
  * @model:      model name
  *
  * Description:
  *     Search the scsi_dev_info_list for an entry matching @vendor and
  *     @model, if found, return the matching flags value, else return
- *     the host or global default settings.
+ *     the host or global default settings.  Called during scan time.
  **/
 int scsi_get_device_flags(struct scsi_device *sdev,
                           const unsigned char *vendor,
@@ -483,13 +483,11 @@ stop_output:
 }
 
 /* 
- * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via
- * /proc.
+ * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
  *
- * Use: echo "vendor:model:flag" > /proc/scsi/device_info
- *
- * To add a black/white list entry for vendor and model with an integer
- * value of flag to the scsi device info list.
+ * Description: Adds a black/white list entry for vendor and model with an
+ * integer value of flag to the scsi device info list.
+ * To use, echo "vendor:model:flag" > /proc/scsi/device_info
  */
 static int proc_scsi_devinfo_write(struct file *file, const char __user *buf,
                                    unsigned long length, void *data)
@@ -532,8 +530,7 @@ MODULE_PARM_DESC(default_dev_flags,
                  "scsi default device flag integer value");
 
 /**
- * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove
- *      the scsi_dev_info_list.
+ * scsi_dev_info_list_delete - called from scsi.c:exit_scsi to remove the scsi_dev_info_list.
  **/
 void scsi_exit_devinfo(void)
 {
@@ -552,13 +549,12 @@ void scsi_exit_devinfo(void)
 }
 
 /**
- * scsi_dev_list_init: set up the dynamic device list.
- * @dev_list:   string of device flags to add
+ * scsi_init_devinfo - set up the dynamic device list.
  *
  * Description:
- *      Add command line @dev_list entries, then add
+ *      Add command line entries from scsi_dev_flags, then add
  *      scsi_static_device_list entries to the scsi device info list.
- **/
+ */
 int __init scsi_init_devinfo(void)
 {
 #ifdef CONFIG_SCSI_PROC_FS
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index ebaca4ca4a13..547e85aa414f 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -62,7 +62,7 @@ void scsi_eh_wakeup(struct Scsi_Host *shost)
  * @shost:      SCSI host to invoke error handling on.
  *
  * Schedule SCSI EH without scmd.
- **/
+ */
 void scsi_schedule_eh(struct Scsi_Host *shost)
 {
         unsigned long flags;
@@ -86,7 +86,7 @@ EXPORT_SYMBOL_GPL(scsi_schedule_eh);
  *
  * Return value:
  *      0 on failure.
- **/
+ */
 int scsi_eh_scmd_add(struct scsi_cmnd *scmd, int eh_flag)
 {
         struct Scsi_Host *shost = scmd->device->host;
@@ -121,7 +121,7 @@ int scsi_eh_scmd_add(struct scsi_cmnd *scmd, int eh_flag)
  *    This should be turned into an inline function.  Each scsi command
  *    has its own timer, and as it is added to the queue, we set up the
  *    timer.  When the command completes, we cancel the timer.
- **/
+ */
 void scsi_add_timer(struct scsi_cmnd *scmd, int timeout,
                     void (*complete)(struct scsi_cmnd *))
 {
@@ -155,7 +155,7 @@ void scsi_add_timer(struct scsi_cmnd *scmd, int timeout,
  * Return value:
  *     1 if we were able to detach the timer.  0 if we blew it, and the
  *     timer function has already started to run.
- **/
+ */
 int scsi_delete_timer(struct scsi_cmnd *scmd)
 {
         int rtn;
@@ -181,7 +181,7 @@ int scsi_delete_timer(struct scsi_cmnd *scmd)
  *     only in that the normal completion handling might run, but if the
  *     normal completion function determines that the timer has already
  *     fired, then it mustn't do anything.
- **/
+ */
 void scsi_times_out(struct scsi_cmnd *scmd)
 {
         enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
@@ -224,7 +224,7 @@ void scsi_times_out(struct scsi_cmnd *scmd)
  *
  * Return value:
  *     0 when dev was taken offline by error recovery. 1 OK to proceed.
- **/
+ */
 int scsi_block_when_processing_errors(struct scsi_device *sdev)
 {
         int online;
@@ -245,7 +245,7 @@ EXPORT_SYMBOL(scsi_block_when_processing_errors);
  * scsi_eh_prt_fail_stats - Log info on failures.
  * @shost:      scsi host being recovered.
  * @work_q:     Queue of scsi cmds to process.
- **/
+ */
 static inline void scsi_eh_prt_fail_stats(struct Scsi_Host *shost,
                                           struct list_head *work_q)
 {
@@ -295,7 +295,7 @@ static inline void scsi_eh_prt_fail_stats(struct Scsi_Host *shost,
  * Notes:
  *      When a deferred error is detected the current command has
  *      not been executed and needs retrying.
- **/
+ */
 static int scsi_check_sense(struct scsi_cmnd *scmd)
 {
         struct scsi_sense_hdr sshdr;
@@ -398,7 +398,7 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
  *    queued during error recovery.  the main difference here is that we
  *    don't allow for the possibility of retries here, and we are a lot
  *    more restrictive about what we consider acceptable.
- **/
+ */
 static int scsi_eh_completed_normally(struct scsi_cmnd *scmd)
 {
         /*
@@ -452,7 +452,7 @@ static int scsi_eh_completed_normally(struct scsi_cmnd *scmd)
 /**
  * scsi_eh_done - Completion function for error handling.
  * @scmd:       Cmd that is done.
- **/
+ */
 static void scsi_eh_done(struct scsi_cmnd *scmd)
 {
         struct completion     *eh_action;
@@ -469,7 +469,7 @@ static void scsi_eh_done(struct scsi_cmnd *scmd)
 /**
  * scsi_try_host_reset - ask host adapter to reset itself
  * @scmd:       SCSI cmd to send hsot reset.
- **/
+ */
 static int scsi_try_host_reset(struct scsi_cmnd *scmd)
 {
         unsigned long flags;
@@ -498,7 +498,7 @@ static int scsi_try_host_reset(struct scsi_cmnd *scmd)
 /**
  * scsi_try_bus_reset - ask host to perform a bus reset
  * @scmd:       SCSI cmd to send bus reset.
- **/
+ */
 static int scsi_try_bus_reset(struct scsi_cmnd *scmd)
 {
         unsigned long flags;
@@ -533,7 +533,7 @@ static int scsi_try_bus_reset(struct scsi_cmnd *scmd)
  *    unreliable for a given host, then the host itself needs to put a
  *    timer on it, and set the host back to a consistent state prior to
  *    returning.
- **/
+ */
 static int scsi_try_bus_device_reset(struct scsi_cmnd *scmd)
 {
         int rtn;
@@ -568,7 +568,7 @@ static int __scsi_try_to_abort_cmd(struct scsi_cmnd *scmd)
  *    author of the low-level driver wishes this operation to be timed,
  *    they can provide this facility themselves.  helper functions in
  *    scsi_error.c can be supplied to make this easier to do.
- **/
+ */
 static int scsi_try_to_abort_cmd(struct scsi_cmnd *scmd)
 {
         /*
@@ -601,7 +601,7 @@ static void scsi_abort_eh_cmnd(struct scsi_cmnd *scmd)
  * sent must be one that does not transfer any data.  If @sense_bytes != 0
  * @cmnd is ignored and this functions sets up a REQUEST_SENSE command
  * and cmnd buffers to read @sense_bytes into @scmd->sense_buffer.
- **/
+ */
 void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses,
                         unsigned char *cmnd, int cmnd_size, unsigned sense_bytes)
 {
@@ -625,7 +625,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses,
 
         if (sense_bytes) {
                 scmd->request_bufflen = min_t(unsigned,
-                                       sizeof(scmd->sense_buffer), sense_bytes);
+                                       SCSI_SENSE_BUFFERSIZE, sense_bytes);
                 sg_init_one(&ses->sense_sgl, scmd->sense_buffer,
                                                        scmd->request_bufflen);
                 scmd->request_buffer = &ses->sense_sgl;
@@ -657,7 +657,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses,
          * Zero the sense buffer.  The scsi spec mandates that any
          * untransferred sense data should be interpreted as being zero.
          */
-        memset(scmd->sense_buffer, 0, sizeof(scmd->sense_buffer));
+        memset(scmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
 }
 EXPORT_SYMBOL(scsi_eh_prep_cmnd);
 
@@ -667,7 +667,7 @@ EXPORT_SYMBOL(scsi_eh_prep_cmnd);
  * @ses:        saved information from a coresponding call to scsi_prep_eh_cmnd
  *
  * Undo any damage done by above scsi_prep_eh_cmnd().
- **/
+ */
 void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, struct scsi_eh_save *ses)
 {
         /*
@@ -697,7 +697,7 @@ EXPORT_SYMBOL(scsi_eh_restore_cmnd);
  *
  * Return value:
  *    SUCCESS or FAILED or NEEDS_RETRY
- **/
+ */
 static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, unsigned char *cmnd,
                              int cmnd_size, int timeout, unsigned sense_bytes)
 {
@@ -765,7 +765,7 @@ static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, unsigned char *cmnd,
  *    Some hosts automatically obtain this information, others require
  *    that we obtain it on our own. This function will *not* return until
  *    the command either times out, or it completes.
- **/
+ */
 static int scsi_request_sense(struct scsi_cmnd *scmd)
 {
         return scsi_send_eh_cmnd(scmd, NULL, 0, SENSE_TIMEOUT, ~0);
@@ -779,10 +779,10 @@ static int scsi_request_sense(struct scsi_cmnd *scmd)
  * Notes:
  *    We don't want to use the normal command completion while we are are
  *    still handling errors - it may cause other commands to be queued,
- *    and that would disturb what we are doing.  thus we really want to
+ *    and that would disturb what we are doing.  Thus we really want to
  *    keep a list of pending commands for final completion, and once we
  *    are ready to leave error handling we handle completion for real.
- **/
+ */
 void scsi_eh_finish_cmd(struct scsi_cmnd *scmd, struct list_head *done_q)
 {
         scmd->device->host->host_failed--;
@@ -794,7 +794,7 @@ EXPORT_SYMBOL(scsi_eh_finish_cmd);
 /**
  * scsi_eh_get_sense - Get device sense data.
  * @work_q:     Queue of commands to process.
- * @done_q:     Queue of proccessed commands..
+ * @done_q:     Queue of processed commands.
  *
  * Description:
  *    See if we need to request sense information.  if so, then get it
@@ -802,7 +802,7 @@ EXPORT_SYMBOL(scsi_eh_finish_cmd);
  *
  * Notes:
  *    This has the unfortunate side effect that if a shost adapter does
- *    not automatically request sense information, that we end up shutting
+ *    not automatically request sense information, we end up shutting
  *    it down before we request it.
  *
  *    All drivers should request sense information internally these days,
@@ -810,7 +810,7 @@ EXPORT_SYMBOL(scsi_eh_finish_cmd);
  *
  *    XXX: Long term this code should go away, but that needs an audit of
  *         all LLDDs first.
- **/
+ */
 int scsi_eh_get_sense(struct list_head *work_q,
                       struct list_head *done_q)
 {
@@ -858,11 +858,11 @@ EXPORT_SYMBOL_GPL(scsi_eh_get_sense);
 
 /**
  * scsi_eh_tur - Send TUR to device.
- * @scmd:       Scsi cmd to send TUR
+ * @scmd:       &scsi_cmnd to send TUR
  *
  * Return value:
  *    0 - Device is ready. 1 - Device NOT ready.
- **/
+ */
 static int scsi_eh_tur(struct scsi_cmnd *scmd)
 {
         static unsigned char tur_command[6] = {TEST_UNIT_READY, 0, 0, 0, 0, 0};
@@ -887,17 +887,17 @@ retry_tur:
 }
 
 /**
- * scsi_eh_abort_cmds - abort canceled commands.
- * @shost:      scsi host being recovered.
- * @eh_done_q:  list_head for processed commands.
+ * scsi_eh_abort_cmds - abort pending commands.
+ * @work_q:     &list_head for pending commands.
+ * @done_q:     &list_head for processed commands.
  *
  * Decription:
  *    Try and see whether or not it makes sense to try and abort the
- *    running command.  this only works out to be the case if we have one
- *    command that has timed out.  if the command simply failed, it makes
+ *    running command.  This only works out to be the case if we have one
+ *    command that has timed out.  If the command simply failed, it makes
  *    no sense to try and abort the command, since as far as the shost
  *    adapter is concerned, it isn't running.
- **/
+ */
 static int scsi_eh_abort_cmds(struct list_head *work_q,
                               struct list_head *done_q)
 {
@@ -931,11 +931,11 @@ static int scsi_eh_abort_cmds(struct list_head *work_q,
 
 /**
  * scsi_eh_try_stu - Send START_UNIT to device.
- * @scmd:       Scsi cmd to send START_UNIT
+ * @scmd:       &scsi_cmnd to send START_UNIT
  *
  * Return value:
  *    0 - Device is ready. 1 - Device NOT ready.
- **/
+ */
 static int scsi_eh_try_stu(struct scsi_cmnd *scmd)
 {
         static unsigned char stu_command[6] = {START_STOP, 0, 0, 0, 1, 0};
@@ -956,13 +956,14 @@ static int scsi_eh_try_stu(struct scsi_cmnd *scmd)
 
  /**
  * scsi_eh_stu - send START_UNIT if needed
- * @shost:      scsi host being recovered.
- * @eh_done_q:  list_head for processed commands.
+ * @shost:      &scsi host being recovered.
+ * @work_q:     &list_head for pending commands.
+ * @done_q:     &list_head for processed commands.
  *
  * Notes:
  *    If commands are failing due to not ready, initializing command required,
  *      try revalidating the device, which will end up sending a start unit. 
- **/
+ */
 static int scsi_eh_stu(struct Scsi_Host *shost,
                               struct list_head *work_q,
                               struct list_head *done_q)
@@ -1008,14 +1009,15 @@ static int scsi_eh_stu(struct Scsi_Host *shost,
 /**
  * scsi_eh_bus_device_reset - send bdr if needed
  * @shost:      scsi host being recovered.
- * @eh_done_q:  list_head for processed commands.
+ * @work_q:     &list_head for pending commands.
+ * @done_q:     &list_head for processed commands.
  *
  * Notes:
- *    Try a bus device reset.  still, look to see whether we have multiple
+ *    Try a bus device reset.  Still, look to see whether we have multiple
  *    devices that are jammed or not - if we have multiple devices, it
  *    makes no sense to try bus_device_reset - we really would need to try
  *    a bus_reset instead. 
- **/
+ */
 static int scsi_eh_bus_device_reset(struct Scsi_Host *shost,
                                     struct list_head *work_q,
                                     struct list_head *done_q)
@@ -1063,9 +1065,10 @@ static int scsi_eh_bus_device_reset(struct Scsi_Host *shost,
 
 /**
  * scsi_eh_bus_reset - send a bus reset 
- * @shost:      scsi host being recovered.
- * @eh_done_q:  list_head for processed commands.
- **/
+ * @shost:      &scsi host being recovered.
+ * @work_q:     &list_head for pending commands.
+ * @done_q:     &list_head for processed commands.
+ */
 static int scsi_eh_bus_reset(struct Scsi_Host *shost,
                              struct list_head *work_q,
                              struct list_head *done_q)
@@ -1122,7 +1125,7 @@ static int scsi_eh_bus_reset(struct Scsi_Host *shost,
  * scsi_eh_host_reset - send a host reset 
  * @work_q:     list_head for processed commands.
  * @done_q:     list_head for processed commands.
- **/
+ */
 static int scsi_eh_host_reset(struct list_head *work_q,
                               struct list_head *done_q)
 {
@@ -1157,8 +1160,7 @@ static int scsi_eh_host_reset(struct list_head *work_q,
  * scsi_eh_offline_sdevs - offline scsi devices that fail to recover
  * @work_q:     list_head for processed commands.
  * @done_q:     list_head for processed commands.
- *
- **/
+ */
 static void scsi_eh_offline_sdevs(struct list_head *work_q,
                                   struct list_head *done_q)
 {
@@ -1191,7 +1193,7 @@ static void scsi_eh_offline_sdevs(struct list_head *work_q,
  *    is woken.  In cases where the error code indicates an error that
  *    doesn't require the error handler read (i.e. we don't need to
  *    abort/reset), this function should return SUCCESS.
- **/
+ */
 int scsi_decide_disposition(struct scsi_cmnd *scmd)
 {
         int rtn;
@@ -1372,7 +1374,7 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd)
  *
  *      If scsi_allocate_request() fails for what ever reason, we
  *      completely forget to lock the door.
- **/
+ */
 static void scsi_eh_lock_door(struct scsi_device *sdev)
 {
         unsigned char cmnd[MAX_COMMAND_SIZE];
@@ -1396,7 +1398,7 @@ static void scsi_eh_lock_door(struct scsi_device *sdev)
  * Notes:
  *    When we entered the error handler, we blocked all further i/o to
  *    this device.  we need to 'reverse' this process.
- **/
+ */
 static void scsi_restart_operations(struct Scsi_Host *shost)
 {
         struct scsi_device *sdev;
@@ -1440,9 +1442,9 @@ static void scsi_restart_operations(struct Scsi_Host *shost)
 /**
  * scsi_eh_ready_devs - check device ready state and recover if not.
  * @shost:      host to be recovered.
- * @eh_done_q:  list_head for processed commands.
- *
- **/
+ * @work_q:     &list_head for pending commands.
+ * @done_q:     &list_head for processed commands.
+ */
 void scsi_eh_ready_devs(struct Scsi_Host *shost,
                         struct list_head *work_q,
                         struct list_head *done_q)
@@ -1458,8 +1460,7 @@ EXPORT_SYMBOL_GPL(scsi_eh_ready_devs);
 /**
  * scsi_eh_flush_done_q - finish processed commands or retry them.
  * @done_q:     list_head of processed commands.
- *
- **/
+ */
 void scsi_eh_flush_done_q(struct list_head *done_q)
 {
         struct scsi_cmnd *scmd, *next;
@@ -1513,7 +1514,7 @@ EXPORT_SYMBOL(scsi_eh_flush_done_q);
  *    scsi_finish_cmd() called for it.  we do all of the retry stuff
  *    here, so when we restart the host after we return it should have an
  *    empty queue.
- **/
+ */
 static void scsi_unjam_host(struct Scsi_Host *shost)
 {
         unsigned long flags;
@@ -1540,7 +1541,7 @@ static void scsi_unjam_host(struct Scsi_Host *shost)
  * Notes:
  *    This is the main error handling loop.  This is run as a kernel thread
  *    for every SCSI host and handles all error handling activity.
- **/
+ */
 int scsi_error_handler(void *data)
 {
         struct Scsi_Host *shost = data;
@@ -1769,7 +1770,7 @@ EXPORT_SYMBOL(scsi_reset_provider);
  *
  * Return value:
  *      1 if valid sense data information found, else 0;
- **/
+ */
 int scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
                          struct scsi_sense_hdr *sshdr)
 {
@@ -1819,14 +1820,12 @@ int scsi_command_normalize_sense(struct scsi_cmnd *cmd,
                                  struct scsi_sense_hdr *sshdr)
 {
         return scsi_normalize_sense(cmd->sense_buffer,
-                        sizeof(cmd->sense_buffer), sshdr);
+                        SCSI_SENSE_BUFFERSIZE, sshdr);
 }
 EXPORT_SYMBOL(scsi_command_normalize_sense);
 
 /**
- * scsi_sense_desc_find - search for a given descriptor type in
- *                      descriptor sense data format.
- *
+ * scsi_sense_desc_find - search for a given descriptor type in descriptor sense data format.
  * @sense_buffer:       byte array of descriptor format sense data
  * @sb_len:             number of valid bytes in sense_buffer
  * @desc_type:          value of descriptor type to find
@@ -1837,7 +1836,7 @@ EXPORT_SYMBOL(scsi_command_normalize_sense);
  *
  * Return value:
  *      pointer to start of (first) descriptor if found else NULL
- **/
+ */
 const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
                                 int desc_type)
 {
@@ -1865,9 +1864,7 @@ const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
 EXPORT_SYMBOL(scsi_sense_desc_find);
 
 /**
- * scsi_get_sense_info_fld - attempts to get information field from
- *                      sense data (either fixed or descriptor format)
- *
+ * scsi_get_sense_info_fld - get information field from sense data (either fixed or descriptor format)
  * @sense_buffer:       byte array of sense data
  * @sb_len:             number of valid bytes in sense_buffer
  * @info_out:           pointer to 64 integer where 8 or 4 byte information
@@ -1875,7 +1872,7 @@ EXPORT_SYMBOL(scsi_sense_desc_find);
  *
  * Return value:
  *      1 if information field found, 0 if not found.
- **/
+ */
 int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
                             u64 * info_out)
 {
diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c
index 32293f451669..28b19ef26309 100644
--- a/drivers/scsi/scsi_ioctl.c
+++ b/drivers/scsi/scsi_ioctl.c
@@ -174,10 +174,15 @@ static int scsi_ioctl_get_pci(struct scsi_device *sdev, void __user *arg)
 }
 
 
-/*
- * the scsi_ioctl() function differs from most ioctls in that it does
- * not take a major/minor number as the dev field.  Rather, it takes
- * a pointer to a scsi_devices[] element, a structure. 
+/**
+ * scsi_ioctl - Dispatch ioctl to scsi device
+ * @sdev: scsi device receiving ioctl
+ * @cmd: which ioctl is it
+ * @arg: data associated with ioctl
+ *
+ * Description: The scsi_ioctl() function differs from most ioctls in that it
+ * does not take a major/minor number as the dev field.  Rather, it takes
+ * a pointer to a &struct scsi_device.
  */
 int scsi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
 {
@@ -239,7 +244,7 @@ int scsi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
                 return scsi_set_medium_removal(sdev, SCSI_REMOVAL_ALLOW);
         case SCSI_IOCTL_TEST_UNIT_READY:
                 return scsi_test_unit_ready(sdev, IOCTL_NORMAL_TIMEOUT,
-                                            NORMAL_RETRIES);
+                                            NORMAL_RETRIES, NULL);
         case SCSI_IOCTL_START_UNIT:
                 scsi_cmd[0] = START_STOP;
                 scsi_cmd[1] = 0;
@@ -264,9 +269,12 @@ int scsi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
 }
 EXPORT_SYMBOL(scsi_ioctl);
 
-/*
- * the scsi_nonblock_ioctl() function is designed for ioctls which may
- * be executed even if the device is in recovery.
+/**
+ * scsi_nonblock_ioctl() - Handle SG_SCSI_RESET
+ * @sdev: scsi device receiving ioctl
+ * @cmd: Must be SC_SCSI_RESET
+ * @arg: pointer to int containing SG_SCSI_RESET_{DEVICE,BUS,HOST}
+ * @filp: either NULL or a &struct file which must have the O_NONBLOCK flag.
  */
 int scsi_nonblockable_ioctl(struct scsi_device *sdev, int cmd,
                             void __user *arg, struct file *filp)
@@ -276,7 +284,7 @@ int scsi_nonblockable_ioctl(struct scsi_device *sdev, int cmd,
         /* The first set of iocts may be executed even if we're doing
          * error processing, as long as the device was opened
          * non-blocking */
-        if (filp && filp->f_flags & O_NONBLOCK) {
+        if (filp && (filp->f_flags & O_NONBLOCK)) {
                 if (scsi_host_in_recovery(sdev->host))
                         return -ENODEV;
         } else if (!scsi_block_when_processing_errors(sdev))
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index a9ac5b1b1667..4cf902efbdbf 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -175,7 +175,7 @@ int scsi_queue_insert(struct scsi_cmnd *cmd, int reason)
  *
  * returns the req->errors value which is the scsi_cmnd result
  * field.
- **/
+ */
 int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
                  int data_direction, void *buffer, unsigned bufflen,
                  unsigned char *sense, int timeout, int retries, int flags)
@@ -274,7 +274,7 @@ static void scsi_bi_endio(struct bio *bio, int error)
 /**
  * scsi_req_map_sg - map a scatterlist into a request
  * @rq:         request to fill
- * @sg:         scatterlist
+ * @sgl:        scatterlist
  * @nsegs:      number of elements
  * @bufflen:    len of buffer
  * @gfp:        memory allocation flags
@@ -365,14 +365,16 @@ free_bios:
  * @sdev:       scsi device
  * @cmd:        scsi command
  * @cmd_len:    length of scsi cdb
- * @data_direction: data direction
+ * @data_direction: DMA_TO_DEVICE, DMA_FROM_DEVICE, or DMA_NONE
  * @buffer:     data buffer (this can be a kernel buffer or scatterlist)
  * @bufflen:    len of buffer
  * @use_sg:     if buffer is a scatterlist this is the number of elements
  * @timeout:    request timeout in seconds
  * @retries:    number of times to retry request
- * @flags:      or into request flags
- **/
+ * @privdata:   data passed to done()
+ * @done:       callback function when done
+ * @gfp:        memory allocation flags
+ */
 int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
                        int cmd_len, int data_direction, void *buffer, unsigned bufflen,
                        int use_sg, int timeout, int retries, void *privdata,
@@ -439,7 +441,7 @@ static void scsi_init_cmd_errh(struct scsi_cmnd *cmd)
 {
         cmd->serial_number = 0;
         cmd->resid = 0;
-        memset(cmd->sense_buffer, 0, sizeof cmd->sense_buffer);
+        memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
         if (cmd->cmd_len == 0)
                 cmd->cmd_len = COMMAND_SIZE(cmd->cmnd[0]);
 }
@@ -524,7 +526,7 @@ static void scsi_run_queue(struct request_queue *q)
         struct Scsi_Host *shost = sdev->host;
         unsigned long flags;
 
-        if (sdev->single_lun)
+        if (scsi_target(sdev)->single_lun)
                 scsi_single_lun_run(sdev);
 
         spin_lock_irqsave(shost->host_lock, flags);
@@ -1102,7 +1104,6 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
  *
  * Returns:     0 on success
  *              BLKPREP_DEFER if the failure is retryable
- *              BLKPREP_KILL if the failure is fatal
  */
 static int scsi_init_io(struct scsi_cmnd *cmd)
 {
@@ -1136,17 +1137,9 @@ static int scsi_init_io(struct scsi_cmnd *cmd)
          * each segment.
          */
         count = blk_rq_map_sg(req->q, req, cmd->request_buffer);
-        if (likely(count <= cmd->use_sg)) {
-                cmd->use_sg = count;
-                return BLKPREP_OK;
-        }
-
-        printk(KERN_ERR "Incorrect number of segments after building list\n");
-        printk(KERN_ERR "counted %d, received %d\n", count, cmd->use_sg);
-        printk(KERN_ERR "req nr_sec %lu, cur_nr_sec %u\n", req->nr_sectors,
-                        req->current_nr_sectors);
-
-        return BLKPREP_KILL;
+        BUG_ON(count > cmd->use_sg);
+        cmd->use_sg = count;
+        return BLKPREP_OK;
 }
 
 static struct scsi_cmnd *scsi_get_cmd_from_req(struct scsi_device *sdev,
@@ -1557,7 +1550,7 @@ static void scsi_request_fn(struct request_queue *q)
 
                 if (!scsi_host_queue_ready(q, shost, sdev))
                         goto not_ready;
-                if (sdev->single_lun) {
+                if (scsi_target(sdev)->single_lun) {
                         if (scsi_target(sdev)->starget_sdev_user &&
                             scsi_target(sdev)->starget_sdev_user != sdev)
                                 goto not_ready;
@@ -1675,6 +1668,14 @@ struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost,
 
         if (!shost->use_clustering)
                 clear_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
+
+        /*
+         * set a reasonable default alignment on word boundaries: the
+         * host and device may alter it using
+         * blk_queue_update_dma_alignment() later.
+         */
+        blk_queue_dma_alignment(q, 0x03);
+
         return q;
 }
 EXPORT_SYMBOL(__scsi_alloc_queue);
@@ -1804,7 +1805,7 @@ void scsi_exit_queue(void)
  *      @timeout: command timeout
  *      @retries: number of retries before failing
  *      @data: returns a structure abstracting the mode header data
- *      @sense: place to put sense data (or NULL if no sense to be collected).
+ *      @sshdr: place to put sense data (or NULL if no sense to be collected).
  *              must be SCSI_SENSE_BUFFERSIZE big.
  *
  *      Returns zero if successful; negative error number or scsi
@@ -1871,8 +1872,7 @@ scsi_mode_select(struct scsi_device *sdev, int pf, int sp, int modepage,
 EXPORT_SYMBOL_GPL(scsi_mode_select);
 
 /**
- *      scsi_mode_sense - issue a mode sense, falling back from 10 to 
- *              six bytes if necessary.
+ *      scsi_mode_sense - issue a mode sense, falling back from 10 to six bytes if necessary.
  *      @sdev:  SCSI device to be queried
  *      @dbd:   set if mode sense will allow block descriptors to be returned
  *      @modepage: mode page being requested
@@ -1881,13 +1881,13 @@ EXPORT_SYMBOL_GPL(scsi_mode_select);
  *      @timeout: command timeout
  *      @retries: number of retries before failing
  *      @data: returns a structure abstracting the mode header data
- *      @sense: place to put sense data (or NULL if no sense to be collected).
+ *      @sshdr: place to put sense data (or NULL if no sense to be collected).
  *              must be SCSI_SENSE_BUFFERSIZE big.
  *
  *      Returns zero if unsuccessful, or the header offset (either 4
  *      or 8 depending on whether a six or ten byte command was
  *      issued) if successful.
- **/
+ */
 int
 scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
                   unsigned char *buffer, int len, int timeout, int retries,
@@ -1981,40 +1981,69 @@ scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
 }
 EXPORT_SYMBOL(scsi_mode_sense);
 
+/**
+ *      scsi_test_unit_ready - test if unit is ready
+ *      @sdev:  scsi device to change the state of.
+ *      @timeout: command timeout
+ *      @retries: number of retries before failing
+ *      @sshdr_external: Optional pointer to struct scsi_sense_hdr for
+ *              returning sense. Make sure that this is cleared before passing
+ *              in.
+ *
+ *      Returns zero if unsuccessful or an error if TUR failed.  For
+ *      removable media, a return of NOT_READY or UNIT_ATTENTION is
+ *      translated to success, with the ->changed flag updated.
+ **/
 int
-scsi_test_unit_ready(struct scsi_device *sdev, int timeout, int retries)
+scsi_test_unit_ready(struct scsi_device *sdev, int timeout, int retries,
+                     struct scsi_sense_hdr *sshdr_external)
 {
         char cmd[] = {
                 TEST_UNIT_READY, 0, 0, 0, 0, 0,
         };
-        struct scsi_sense_hdr sshdr;
+        struct scsi_sense_hdr *sshdr;
         int result;
-        
-        result = scsi_execute_req(sdev, cmd, DMA_NONE, NULL, 0, &sshdr,
-                                  timeout, retries);
+
+        if (!sshdr_external)
+                sshdr = kzalloc(sizeof(*sshdr), GFP_KERNEL);
+        else
+                sshdr = sshdr_external;
+
+        /* try to eat the UNIT_ATTENTION if there are enough retries */
+        do {
+                result = scsi_execute_req(sdev, cmd, DMA_NONE, NULL, 0, sshdr,
+                                          timeout, retries);
+        } while ((driver_byte(result) & DRIVER_SENSE) &&
+                 sshdr && sshdr->sense_key == UNIT_ATTENTION &&
+                 --retries);
+
+        if (!sshdr)
+                /* could not allocate sense buffer, so can't process it */
+                return result;
 
         if ((driver_byte(result) & DRIVER_SENSE) && sdev->removable) {
 
-                if ((scsi_sense_valid(&sshdr)) &&
-                    ((sshdr.sense_key == UNIT_ATTENTION) ||
-                     (sshdr.sense_key == NOT_READY))) {
+                if ((scsi_sense_valid(sshdr)) &&
+                    ((sshdr->sense_key == UNIT_ATTENTION) ||
+                     (sshdr->sense_key == NOT_READY))) {
                         sdev->changed = 1;
                         result = 0;
                 }
         }
+        if (!sshdr_external)
+                kfree(sshdr);
         return result;
 }
 EXPORT_SYMBOL(scsi_test_unit_ready);
 
 /**
- *      scsi_device_set_state - Take the given device through the device
- *              state model.
+ *      scsi_device_set_state - Take the given device through the device state model.
  *      @sdev:  scsi device to change the state of.
  *      @state: state to change to.
  *
  *      Returns zero if unsuccessful or an error if the requested 
  *      transition is illegal.
- **/
+ */
 int
 scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
 {
@@ -2264,7 +2293,7 @@ EXPORT_SYMBOL_GPL(sdev_evt_send_simple);
  *      Must be called with user context, may sleep.
  *
  *      Returns zero if unsuccessful or an error if not.
- **/
+ */
 int
 scsi_device_quiesce(struct scsi_device *sdev)
 {
@@ -2289,7 +2318,7 @@ EXPORT_SYMBOL(scsi_device_quiesce);
  *      queues.
  *
  *      Must be called with user context, may sleep.
- **/
+ */
 void
 scsi_device_resume(struct scsi_device *sdev)
 {
@@ -2326,8 +2355,7 @@ scsi_target_resume(struct scsi_target *starget)
 EXPORT_SYMBOL(scsi_target_resume);
 
 /**
- * scsi_internal_device_block - internal function to put a device
- *                              temporarily into the SDEV_BLOCK state
+ * scsi_internal_device_block - internal function to put a device temporarily into the SDEV_BLOCK state
  * @sdev:       device to block
  *
  * Block request made by scsi lld's to temporarily stop all
@@ -2342,7 +2370,7 @@ EXPORT_SYMBOL(scsi_target_resume);
  *      state, all commands are deferred until the scsi lld reenables
  *      the device with scsi_device_unblock or device_block_tmo fires.
  *      This routine assumes the host_lock is held on entry.
- **/
+ */
 int
 scsi_internal_device_block(struct scsi_device *sdev)
 {
@@ -2382,7 +2410,7 @@ EXPORT_SYMBOL_GPL(scsi_internal_device_block);
  *      (which must be a legal transition) allowing the midlayer to
  *      goose the queue for this device.  This routine assumes the 
  *      host_lock is held upon entry.
- **/
+ */
 int
 scsi_internal_device_unblock(struct scsi_device *sdev)
 {
@@ -2460,7 +2488,7 @@ EXPORT_SYMBOL_GPL(scsi_target_unblock);
 
 /**
  * scsi_kmap_atomic_sg - find and atomically map an sg-elemnt
- * @sg:         scatter-gather list
+ * @sgl:        scatter-gather list
  * @sg_count:   number of segments in sg
  * @offset:     offset in bytes into sg, on return offset into the mapped area
  * @len:        bytes to map, on return number of bytes mapped
@@ -2509,8 +2537,7 @@ void *scsi_kmap_atomic_sg(struct scatterlist *sgl, int sg_count,
 EXPORT_SYMBOL(scsi_kmap_atomic_sg);
 
 /**
- * scsi_kunmap_atomic_sg - atomically unmap a virtual address, previously
- *                         mapped with scsi_kmap_atomic_sg
+ * scsi_kunmap_atomic_sg - atomically unmap a virtual address, previously mapped with scsi_kmap_atomic_sg
  * @virt:       virtual address to be unmapped
  */
 void scsi_kunmap_atomic_sg(void *virt)
diff --git a/drivers/scsi/scsi_netlink.c b/drivers/scsi/scsi_netlink.c
index 40579edca101..3e1591828171 100644
--- a/drivers/scsi/scsi_netlink.c
+++ b/drivers/scsi/scsi_netlink.c
@@ -32,11 +32,12 @@ EXPORT_SYMBOL_GPL(scsi_nl_sock);
 
 
 /**
- * scsi_nl_rcv_msg -
- *    Receive message handler. Extracts message from a receive buffer.
+ * scsi_nl_rcv_msg - Receive message handler.
+ * @skb:                socket receive buffer
+ *
+ * Description: Extracts message from a receive buffer.
  *    Validates message header and calls appropriate transport message handler
  *
- * @skb:                socket receive buffer
  *
  **/
 static void
@@ -99,9 +100,7 @@ next_msg:
 
 
 /**
- * scsi_nl_rcv_event -
- *    Event handler for a netlink socket.
- *
+ * scsi_nl_rcv_event - Event handler for a netlink socket.
  * @this:               event notifier block
  * @event:              event type
  * @ptr:                event payload
@@ -129,9 +128,7 @@ static struct notifier_block scsi_netlink_notifier = {
 
 
 /**
- * scsi_netlink_init -
- *    Called by SCSI subsystem to intialize the SCSI transport netlink
- *    interface
+ * scsi_netlink_init - Called by SCSI subsystem to intialize the SCSI transport netlink interface
  *
  **/
 void
@@ -160,9 +157,7 @@ scsi_netlink_init(void)
 
 
 /**
- * scsi_netlink_exit -
- *    Called by SCSI subsystem to disable the SCSI transport netlink
- *    interface
+ * scsi_netlink_exit - Called by SCSI subsystem to disable the SCSI transport netlink interface
  *
  **/
 void
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index bb6f051beda8..ed395154a5b1 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -45,6 +45,16 @@ static struct proc_dir_entry *proc_scsi;
 /* Protect sht->present and sht->proc_dir */
 static DEFINE_MUTEX(global_host_template_mutex);
 
+/**
+ * proc_scsi_read - handle read from /proc by calling host's proc_info() command
+ * @buffer: passed to proc_info
+ * @start: passed to proc_info
+ * @offset: passed to proc_info
+ * @length: passed to proc_info
+ * @eof: returns whether length read was less than requested
+ * @data: pointer to a &struct Scsi_Host
+ */
+
 static int proc_scsi_read(char *buffer, char **start, off_t offset,
                           int length, int *eof, void *data)
 {
@@ -57,6 +67,13 @@ static int proc_scsi_read(char *buffer, char **start, off_t offset,
         return n;
 }
 
+/**
+ * proc_scsi_write_proc - Handle write to /proc by calling host's proc_info()
+ * @file: not used
+ * @buf: source of data to write.
+ * @count: number of bytes (at most PROC_BLOCK_SIZE) to write.
+ * @data: pointer to &struct Scsi_Host
+ */
 static int proc_scsi_write_proc(struct file *file, const char __user *buf,
                            unsigned long count, void *data)
 {
@@ -80,6 +97,13 @@ out:
         return ret;
 }
 
+/**
+ * scsi_proc_hostdir_add - Create directory in /proc for a scsi host
+ * @sht: owner of this directory
+ *
+ * Sets sht->proc_dir to the new directory.
+ */
+
 void scsi_proc_hostdir_add(struct scsi_host_template *sht)
 {
         if (!sht->proc_info)
@@ -97,6 +121,10 @@ void scsi_proc_hostdir_add(struct scsi_host_template *sht)
         mutex_unlock(&global_host_template_mutex);
 }
 
+/**
+ * scsi_proc_hostdir_rm - remove directory in /proc for a scsi host
+ * @sht: owner of directory
+ */
 void scsi_proc_hostdir_rm(struct scsi_host_template *sht)
 {
         if (!sht->proc_info)
@@ -110,6 +138,11 @@ void scsi_proc_hostdir_rm(struct scsi_host_template *sht)
         mutex_unlock(&global_host_template_mutex);
 }
 
+
+/**
+ * scsi_proc_host_add - Add entry for this host to appropriate /proc dir
+ * @shost: host to add
+ */
 void scsi_proc_host_add(struct Scsi_Host *shost)
 {
         struct scsi_host_template *sht = shost->hostt;
@@ -133,6 +166,10 @@ void scsi_proc_host_add(struct Scsi_Host *shost)
         p->owner = sht->module;
 }
 
+/**
+ * scsi_proc_host_rm - remove this host's entry from /proc
+ * @shost: which host
+ */
 void scsi_proc_host_rm(struct Scsi_Host *shost)
 {
         char name[10];
@@ -143,7 +180,14 @@ void scsi_proc_host_rm(struct Scsi_Host *shost)
         sprintf(name,"%d", shost->host_no);
         remove_proc_entry(name, shost->hostt->proc_dir);
 }
-
+/**
+ * proc_print_scsidevice - return data about this host
+ * @dev: A scsi device
+ * @data: &struct seq_file to output to.
+ *
+ * Description: prints Host, Channel, Id, Lun, Vendor, Model, Rev, Type,
+ * and revision.
+ */
 static int proc_print_scsidevice(struct device *dev, void *data)
 {
         struct scsi_device *sdev = to_scsi_device(dev);
@@ -189,6 +233,21 @@ static int proc_print_scsidevice(struct device *dev, void *data)
         return 0;
 }
 
+/**
+ * scsi_add_single_device - Respond to user request to probe for/add device
+ * @host: user-supplied decimal integer
+ * @channel: user-supplied decimal integer
+ * @id: user-supplied decimal integer
+ * @lun: user-supplied decimal integer
+ *
+ * Description: called by writing "scsi add-single-device" to /proc/scsi/scsi.
+ *
+ * does scsi_host_lookup() and either user_scan() if that transport
+ * type supports it, or else scsi_scan_host_selected()
+ *
+ * Note: this seems to be aimed exclusively at SCSI parallel busses.
+ */
+
 static int scsi_add_single_device(uint host, uint channel, uint id, uint lun)
 {
         struct Scsi_Host *shost;
@@ -206,6 +265,16 @@ static int scsi_add_single_device(uint host, uint channel, uint id, uint lun)
         return error;
 }
 
+/**
+ * scsi_remove_single_device - Respond to user request to remove a device
+ * @host: user-supplied decimal integer
+ * @channel: user-supplied decimal integer
+ * @id: user-supplied decimal integer
+ * @lun: user-supplied decimal integer
+ *
+ * Description: called by writing "scsi remove-single-device" to
+ * /proc/scsi/scsi.  Does a scsi_device_lookup() and scsi_remove_device()
+ */
 static int scsi_remove_single_device(uint host, uint channel, uint id, uint lun)
 {
         struct scsi_device *sdev;
@@ -226,6 +295,25 @@ static int scsi_remove_single_device(uint host, uint channel, uint id, uint lun)
         return error;
 }
 
+/**
+ * proc_scsi_write - handle writes to /proc/scsi/scsi
+ * @file: not used
+ * @buf: buffer to write
+ * @length: length of buf, at most PAGE_SIZE
+ * @ppos: not used
+ *
+ * Description: this provides a legacy mechanism to add or remove devices by
+ * Host, Channel, ID, and Lun.  To use,
+ * "echo 'scsi add-single-device 0 1 2 3' > /proc/scsi/scsi" or
+ * "echo 'scsi remove-single-device 0 1 2 3' > /proc/scsi/scsi" with
+ * "0 1 2 3" replaced by the Host, Channel, Id, and Lun.
+ *
+ * Note: this seems to be aimed at parallel SCSI. Most modern busses (USB,
+ * SATA, Firewire, Fibre Channel, etc) dynamically assign these values to
+ * provide a unique identifier and nothing more.
+ */
+
+
 static ssize_t proc_scsi_write(struct file *file, const char __user *buf,
                                size_t length, loff_t *ppos)
 {
@@ -291,6 +379,11 @@ static ssize_t proc_scsi_write(struct file *file, const char __user *buf,
         return err;
 }
 
+/**
+ * proc_scsi_show - show contents of /proc/scsi/scsi (attached devices)
+ * @s: output goes here
+ * @p: not used
+ */
 static int proc_scsi_show(struct seq_file *s, void *p)
 {
         seq_printf(s, "Attached devices:\n");
@@ -298,10 +391,17 @@ static int proc_scsi_show(struct seq_file *s, void *p)
         return 0;
 }
 
+/**
+ * proc_scsi_open - glue function
+ * @inode: not used
+ * @file: passed to single_open()
+ *
+ * Associates proc_scsi_show with this file
+ */
 static int proc_scsi_open(struct inode *inode, struct file *file)
 {
         /*
-         * We don't really needs this for the write case but it doesn't
+         * We don't really need this for the write case but it doesn't
          * harm either.
          */
         return single_open(file, proc_scsi_show, NULL);
@@ -315,6 +415,9 @@ static const struct file_operations proc_scsi_operations = {
         .release        = single_release,
 };
 
+/**
+ * scsi_init_procfs - create scsi and scsi/scsi in procfs
+ */
 int __init scsi_init_procfs(void)
 {
         struct proc_dir_entry *pde;
@@ -336,6 +439,9 @@ err1:
         return -ENOMEM;
 }
 
+/**
+ * scsi_exit_procfs - Remove scsi/scsi and scsi from procfs
+ */
 void scsi_exit_procfs(void)
 {
         remove_proc_entry("scsi/scsi", NULL);
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 40ea71cd2ca6..1dc165ad17fb 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -221,6 +221,9 @@ static void scsi_unlock_floptical(struct scsi_device *sdev,
 
 /**
  * scsi_alloc_sdev - allocate and setup a scsi_Device
+ * @starget: which target to allocate a &scsi_device for
+ * @lun: which lun
+ * @hostdata: usually NULL and set by ->slave_alloc instead
  *
  * Description:
  *     Allocate, initialize for io, and return a pointer to a scsi_Device.
@@ -472,7 +475,6 @@ static void scsi_target_reap_usercontext(struct work_struct *work)
 
 /**
  * scsi_target_reap - check to see if target is in use and destroy if not
- *
  * @starget: target to be checked
  *
  * This is used after removing a LUN or doing a last put of the target
@@ -863,7 +865,7 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
                 sdev->no_start_on_add = 1;
 
         if (*bflags & BLIST_SINGLELUN)
-                sdev->single_lun = 1;
+                scsi_target(sdev)->single_lun = 1;
 
         sdev->use_10_for_rw = 1;
 
@@ -928,8 +930,7 @@ static inline void scsi_destroy_sdev(struct scsi_device *sdev)
 
 #ifdef CONFIG_SCSI_LOGGING
 /** 
- * scsi_inq_str - print INQUIRY data from min to max index,
- * strip trailing whitespace
+ * scsi_inq_str - print INQUIRY data from min to max index, strip trailing whitespace
  * @buf:   Output buffer with at least end-first+1 bytes of space
  * @inq:   Inquiry buffer (input)
  * @first: Offset of string into inq
@@ -957,9 +958,10 @@ static unsigned char *scsi_inq_str(unsigned char *buf, unsigned char *inq,
  * scsi_probe_and_add_lun - probe a LUN, if a LUN is found add it
  * @starget:    pointer to target device structure
  * @lun:        LUN of target device
- * @sdevscan:   probe the LUN corresponding to this scsi_device
- * @sdevnew:    store the value of any new scsi_device allocated
  * @bflagsp:    store bflags here if not NULL
+ * @sdevp:      probe the LUN corresponding to this scsi_device
+ * @rescan:     if nonzero skip some code only needed on first scan
+ * @hostdata:   passed to scsi_alloc_sdev()
  *
  * Description:
  *     Call scsi_probe_lun, if a LUN with an attached device is found,
@@ -1110,6 +1112,8 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget,
  * scsi_sequential_lun_scan - sequentially scan a SCSI target
  * @starget:    pointer to target structure to scan
  * @bflags:     black/white list flag for LUN 0
+ * @scsi_level: Which version of the standard does this device adhere to
+ * @rescan:     passed to scsi_probe_add_lun()
  *
  * Description:
  *     Generally, scan from LUN 1 (LUN 0 is assumed to already have been
@@ -1220,7 +1224,7 @@ EXPORT_SYMBOL(scsilun_to_int);
 
 /**
  * int_to_scsilun: reverts an int into a scsi_lun
- * @int:        integer to be reverted
+ * @lun:        integer to be reverted
  * @scsilun:    struct scsi_lun to be set.
  *
  * Description:
@@ -1252,18 +1256,22 @@ EXPORT_SYMBOL(int_to_scsilun);
 
 /**
  * scsi_report_lun_scan - Scan using SCSI REPORT LUN results
- * @sdevscan:   scan the host, channel, and id of this scsi_device
+ * @starget: which target
+ * @bflags: Zero or a mix of BLIST_NOLUN, BLIST_REPORTLUN2, or BLIST_NOREPORTLUN
+ * @rescan: nonzero if we can skip code only needed on first scan
  *
  * Description:
- *     If @sdevscan is for a SCSI-3 or up device, send a REPORT LUN
- *     command, and scan the resulting list of LUNs by calling
- *     scsi_probe_and_add_lun.
+ *   Fast scanning for modern (SCSI-3) devices by sending a REPORT LUN command.
+ *   Scan the resulting list of LUNs by calling scsi_probe_and_add_lun.
  *
- *     Modifies sdevscan->lun.
+ *   If BLINK_REPORTLUN2 is set, scan a target that supports more than 8
+ *   LUNs even if it's older than SCSI-3.
+ *   If BLIST_NOREPORTLUN is set, return 1 always.
+ *   If BLIST_NOLUN is set, return 0 always.
  *
  * Return:
  *     0: scan completed (or no memory, so further scanning is futile)
- *     1: no report lun scan, or not configured
+ *     1: could not scan with REPORT LUN
  **/
 static int scsi_report_lun_scan(struct scsi_target *starget, int bflags,
                                 int rescan)
@@ -1481,6 +1489,7 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel,
         if (scsi_host_scan_allowed(shost))
                 scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata);
         mutex_unlock(&shost->scan_mutex);
+        transport_configure_device(&starget->dev);
         scsi_target_reap(starget);
         put_device(&starget->dev);
 
@@ -1561,6 +1570,7 @@ static void __scsi_scan_target(struct device *parent, unsigned int channel,
  out_reap:
         /* now determine if the target has any children at all
          * and if not, nuke it */
+        transport_configure_device(&starget->dev);
         scsi_target_reap(starget);
 
         put_device(&starget->dev);
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 00b386677392..ed83cdb6e67d 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -1018,6 +1018,7 @@ int scsi_sysfs_add_host(struct Scsi_Host *shost)
         }
 
         transport_register_device(&shost->shost_gendev);
+        transport_configure_device(&shost->shost_gendev);
         return 0;
 }
 
diff --git a/drivers/scsi/scsi_tgt_if.c b/drivers/scsi/scsi_tgt_if.c
index 9815a1a2db24..d2557dbc2dc1 100644
--- a/drivers/scsi/scsi_tgt_if.c
+++ b/drivers/scsi/scsi_tgt_if.c
@@ -112,7 +112,7 @@ int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, u64 itn_id,
         memset(&ev, 0, sizeof(ev));
         ev.p.cmd_req.host_no = shost->host_no;
         ev.p.cmd_req.itn_id = itn_id;
-        ev.p.cmd_req.data_len = cmd->request_bufflen;
+        ev.p.cmd_req.data_len = scsi_bufflen(cmd);
         memcpy(ev.p.cmd_req.scb, cmd->cmnd, sizeof(ev.p.cmd_req.scb));
         memcpy(ev.p.cmd_req.lun, lun, sizeof(ev.p.cmd_req.lun));
         ev.p.cmd_req.attribute = cmd->tag;
diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c
index a91761c3645f..93ece8f4e5de 100644
--- a/drivers/scsi/scsi_tgt_lib.c
+++ b/drivers/scsi/scsi_tgt_lib.c
@@ -180,7 +180,7 @@ static void scsi_tgt_cmd_destroy(struct work_struct *work)
                 container_of(work, struct scsi_tgt_cmd, work);
         struct scsi_cmnd *cmd = tcmd->rq->special;
 
-        dprintk("cmd %p %d %lu\n", cmd, cmd->sc_data_direction,
+        dprintk("cmd %p %d %u\n", cmd, cmd->sc_data_direction,
                 rq_data_dir(cmd->request));
         scsi_unmap_user_pages(tcmd);
         scsi_host_put_command(scsi_tgt_cmd_to_host(cmd), cmd);
@@ -327,11 +327,11 @@ static void scsi_tgt_cmd_done(struct scsi_cmnd *cmd)
 {
         struct scsi_tgt_cmd *tcmd = cmd->request->end_io_data;
 
-        dprintk("cmd %p %lu\n", cmd, rq_data_dir(cmd->request));
+        dprintk("cmd %p %u\n", cmd, rq_data_dir(cmd->request));
 
         scsi_tgt_uspace_send_status(cmd, tcmd->itn_id, tcmd->tag);
 
-        if (cmd->request_buffer)
+        if (scsi_sglist(cmd))
                 scsi_free_sgtable(cmd);
 
         queue_work(scsi_tgtd, &tcmd->work);
@@ -342,7 +342,7 @@ static int scsi_tgt_transfer_response(struct scsi_cmnd *cmd)
         struct Scsi_Host *shost = scsi_tgt_cmd_to_host(cmd);
         int err;
 
-        dprintk("cmd %p %lu\n", cmd, rq_data_dir(cmd->request));
+        dprintk("cmd %p %u\n", cmd, rq_data_dir(cmd->request));
 
         err = shost->hostt->transfer_response(cmd, scsi_tgt_cmd_done);
         switch (err) {
@@ -365,16 +365,12 @@ static int scsi_tgt_init_cmd(struct scsi_cmnd *cmd, gfp_t gfp_mask)
 
         cmd->request_bufflen = rq->data_len;
 
-        dprintk("cmd %p cnt %d %lu\n", cmd, cmd->use_sg, rq_data_dir(rq));
-        count = blk_rq_map_sg(rq->q, rq, cmd->request_buffer);
-        if (likely(count <= cmd->use_sg)) {
-                cmd->use_sg = count;
-                return 0;
-        }
-
-        eprintk("cmd %p cnt %d\n", cmd, cmd->use_sg);
-        scsi_free_sgtable(cmd);
-        return -EINVAL;
+        dprintk("cmd %p cnt %d %lu\n", cmd, scsi_sg_count(cmd),
+                rq_data_dir(rq));
+        count = blk_rq_map_sg(rq->q, rq, scsi_sglist(cmd));
+        BUG_ON(count > cmd->use_sg);
+        cmd->use_sg = count;
+        return 0;
 }
 
 /* TODO: test this crap and replace bio_map_user with new interface maybe */
@@ -496,8 +492,8 @@ int scsi_tgt_kspace_exec(int host_no, u64 itn_id, int result, u64 tag,
         }
         cmd = rq->special;
 
-        dprintk("cmd %p scb %x result %d len %d bufflen %u %lu %x\n",
-                cmd, cmd->cmnd[0], result, len, cmd->request_bufflen,
+        dprintk("cmd %p scb %x result %d len %d bufflen %u %u %x\n",
+                cmd, cmd->cmnd[0], result, len, scsi_bufflen(cmd),
                 rq_data_dir(rq), cmd->cmnd[0]);
 
         if (result == TASK_ABORTED) {
@@ -617,7 +613,7 @@ int scsi_tgt_kspace_it_nexus_rsp(int host_no, u64 itn_id, int result)
         struct Scsi_Host *shost;
         int err = -EINVAL;
 
-        dprintk("%d %d %llx\n", host_no, result, (unsigned long long) mid);
+        dprintk("%d %d%llx\n", host_no, result, (unsigned long long)itn_id);
 
         shost = scsi_host_lookup(host_no);
         if (IS_ERR(shost)) {
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 7a7cfe583b2a..b1119da6e88c 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -481,9 +481,9 @@ MODULE_PARM_DESC(dev_loss_tmo,
                  " exceeded, the scsi target is removed. Value should be"
                  " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT.");
 
-/**
+/*
  * Netlink Infrastructure
- **/
+ */
 
 static atomic_t fc_event_seq;
 
@@ -491,10 +491,10 @@ static atomic_t fc_event_seq;
  * fc_get_event_number - Obtain the next sequential FC event number
  *
  * Notes:
- *   We could have inline'd this, but it would have required fc_event_seq to
+ *   We could have inlined this, but it would have required fc_event_seq to
  *   be exposed. For now, live with the subroutine call.
  *   Atomic used to avoid lock/unlock...
- **/
+ */
 u32
 fc_get_event_number(void)
 {
@@ -505,7 +505,6 @@ EXPORT_SYMBOL(fc_get_event_number);
 
 /**
  * fc_host_post_event - called to post an even on an fc_host.
- *
  * @shost:              host the event occurred on
  * @event_number:       fc event number obtained from get_fc_event_number()
  * @event_code:         fc_host event being posted
@@ -513,7 +512,7 @@ EXPORT_SYMBOL(fc_get_event_number);
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 void
 fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
                 enum fc_host_event_code event_code, u32 event_data)
@@ -579,17 +578,16 @@ EXPORT_SYMBOL(fc_host_post_event);
 
 
 /**
- * fc_host_post_vendor_event - called to post a vendor unique event on
- *                             a fc_host
- *
+ * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host
  * @shost:              host the event occurred on
  * @event_number:       fc event number obtained from get_fc_event_number()
  * @data_len:           amount, in bytes, of vendor unique data
  * @data_buf:           pointer to vendor unique data
+ * @vendor_id:          Vendor id
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 void
 fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
                 u32 data_len, char * data_buf, u64 vendor_id)
@@ -1900,7 +1898,6 @@ static int fc_vport_match(struct attribute_container *cont,
 
 /**
  * fc_timed_out - FC Transport I/O timeout intercept handler
- *
  * @scmd:       The SCSI command which timed out
  *
  * This routine protects against error handlers getting invoked while a
@@ -1920,7 +1917,7 @@ static int fc_vport_match(struct attribute_container *cont,
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 static enum scsi_eh_timer_return
 fc_timed_out(struct scsi_cmnd *scmd)
 {
@@ -2133,7 +2130,7 @@ EXPORT_SYMBOL(fc_release_transport);
  *      1 - work queued for execution
  *      0 - work is already queued
  *      -EINVAL - work queue doesn't exist
- **/
+ */
 static int
 fc_queue_work(struct Scsi_Host *shost, struct work_struct *work)
 {
@@ -2152,7 +2149,7 @@ fc_queue_work(struct Scsi_Host *shost, struct work_struct *work)
 /**
  * fc_flush_work - Flush a fc_host's workqueue.
  * @shost:      Pointer to Scsi_Host bound to fc_host.
- **/
+ */
 static void
 fc_flush_work(struct Scsi_Host *shost)
 {
@@ -2175,7 +2172,7 @@ fc_flush_work(struct Scsi_Host *shost)
  *
  * Return value:
  *      1 on success / 0 already queued / < 0 for error
- **/
+ */
 static int
 fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work,
                                 unsigned long delay)
@@ -2195,7 +2192,7 @@ fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work,
 /**
  * fc_flush_devloss - Flush a fc_host's devloss workqueue.
  * @shost:      Pointer to Scsi_Host bound to fc_host.
- **/
+ */
 static void
 fc_flush_devloss(struct Scsi_Host *shost)
 {
@@ -2212,21 +2209,20 @@ fc_flush_devloss(struct Scsi_Host *shost)
 
 
 /**
- * fc_remove_host - called to terminate any fc_transport-related elements
- *                  for a scsi host.
- * @rport:      remote port to be unblocked.
+ * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host.
+ * @shost:      Which &Scsi_Host
  *
  * This routine is expected to be called immediately preceeding the
  * a driver's call to scsi_remove_host().
  *
  * WARNING: A driver utilizing the fc_transport, which fails to call
- *   this routine prior to scsi_remote_host(), will leave dangling
+ *   this routine prior to scsi_remove_host(), will leave dangling
  *   objects in /sys/class/fc_remote_ports. Access to any of these
  *   objects can result in a system crash !!!
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 void
 fc_remove_host(struct Scsi_Host *shost)
 {
@@ -2281,10 +2277,10 @@ EXPORT_SYMBOL(fc_remove_host);
 
 /**
  * fc_starget_delete - called to delete the scsi decendents of an rport
- *                  (target and all sdevs)
- *
  * @work:       remote port to be operated on.
- **/
+ *
+ * Deletes target and all sdevs.
+ */
 static void
 fc_starget_delete(struct work_struct *work)
 {
@@ -2303,9 +2299,8 @@ fc_starget_delete(struct work_struct *work)
 
 /**
  * fc_rport_final_delete - finish rport termination and delete it.
- *
  * @work:       remote port to be deleted.
- **/
+ */
 static void
 fc_rport_final_delete(struct work_struct *work)
 {
@@ -2375,7 +2370,7 @@ fc_rport_final_delete(struct work_struct *work)
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 static struct fc_rport *
 fc_rport_create(struct Scsi_Host *shost, int channel,
         struct fc_rport_identifiers  *ids)
@@ -2462,8 +2457,7 @@ delete_rport:
 }
 
 /**
- * fc_remote_port_add - notifies the fc transport of the existence
- *              of a remote FC port.
+ * fc_remote_port_add - notify fc transport of the existence of a remote FC port.
  * @shost:      scsi host the remote port is connected to.
  * @channel:    Channel on shost port connected to.
  * @ids:        The world wide names, fc address, and FC4 port
@@ -2499,7 +2493,7 @@ delete_rport:
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 struct fc_rport *
 fc_remote_port_add(struct Scsi_Host *shost, int channel,
         struct fc_rport_identifiers  *ids)
@@ -2683,19 +2677,18 @@ EXPORT_SYMBOL(fc_remote_port_add);
 
 
 /**
- * fc_remote_port_delete - notifies the fc transport that a remote
- *              port is no longer in existence.
+ * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence.
  * @rport:      The remote port that no longer exists
  *
  * The LLDD calls this routine to notify the transport that a remote
  * port is no longer part of the topology. Note: Although a port
  * may no longer be part of the topology, it may persist in the remote
  * ports displayed by the fc_host. We do this under 2 conditions:
- * - If the port was a scsi target, we delay its deletion by "blocking" it.
+ * 1) If the port was a scsi target, we delay its deletion by "blocking" it.
  *   This allows the port to temporarily disappear, then reappear without
  *   disrupting the SCSI device tree attached to it. During the "blocked"
  *   period the port will still exist.
- * - If the port was a scsi target and disappears for longer than we
+ * 2) If the port was a scsi target and disappears for longer than we
  *   expect, we'll delete the port and the tear down the SCSI device tree
  *   attached to it. However, we want to semi-persist the target id assigned
  *   to that port if it eventually does exist. The port structure will
@@ -2709,7 +2702,8 @@ EXPORT_SYMBOL(fc_remote_port_add);
  * temporary blocked state. From the LLDD's perspective, the rport no
  * longer exists. From the SCSI midlayer's perspective, the SCSI target
  * exists, but all sdevs on it are blocked from further I/O. The following
- * is then expected:
+ * is then expected.
+ *
  *   If the remote port does not return (signaled by a LLDD call to
  *   fc_remote_port_add()) within the dev_loss_tmo timeout, then the
  *   scsi target is removed - killing all outstanding i/o and removing the
@@ -2731,7 +2725,7 @@ EXPORT_SYMBOL(fc_remote_port_add);
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 void
 fc_remote_port_delete(struct fc_rport  *rport)
 {
@@ -2792,12 +2786,12 @@ fc_remote_port_delete(struct fc_rport  *rport)
 EXPORT_SYMBOL(fc_remote_port_delete);
 
 /**
- * fc_remote_port_rolechg - notifies the fc transport that the roles
- *              on a remote may have changed.
+ * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed.
  * @rport:      The remote port that changed.
+ * @roles:      New roles for this port.
  *
- * The LLDD calls this routine to notify the transport that the roles
- * on a remote port may have changed. The largest effect of this is
+ * Description: The LLDD calls this routine to notify the transport that the
+ * roles on a remote port may have changed. The largest effect of this is
  * if a port now becomes a FCP Target, it must be allocated a
  * scsi target id.  If the port is no longer a FCP target, any
  * scsi target id value assigned to it will persist in case the
@@ -2810,7 +2804,7 @@ EXPORT_SYMBOL(fc_remote_port_delete);
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 void
 fc_remote_port_rolechg(struct fc_rport  *rport, u32 roles)
 {
@@ -2875,12 +2869,12 @@ fc_remote_port_rolechg(struct fc_rport  *rport, u32 roles)
 EXPORT_SYMBOL(fc_remote_port_rolechg);
 
 /**
- * fc_timeout_deleted_rport - Timeout handler for a deleted remote port,
- *                      which we blocked, and has now failed to return
- *                      in the allotted time.
- *
+ * fc_timeout_deleted_rport - Timeout handler for a deleted remote port.
  * @work:       rport target that failed to reappear in the allotted time.
- **/
+ *
+ * Description: An attempt to delete a remote port blocks, and if it fails
+ *              to return in the allotted time this gets called.
+ */
 static void
 fc_timeout_deleted_rport(struct work_struct *work)
 {
@@ -2984,14 +2978,12 @@ fc_timeout_deleted_rport(struct work_struct *work)
 }
 
 /**
- * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a
- *                       disconnected SCSI target.
- *
+ * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target.
  * @work:       rport to terminate io on.
  *
  * Notes: Only requests the failure of the io, not that all are flushed
  *    prior to returning.
- **/
+ */
 static void
 fc_timeout_fail_rport_io(struct work_struct *work)
 {
@@ -3008,9 +3000,8 @@ fc_timeout_fail_rport_io(struct work_struct *work)
 
 /**
  * fc_scsi_scan_rport - called to perform a scsi scan on a remote port.
- *
  * @work:       remote port to be scanned.
- **/
+ */
 static void
 fc_scsi_scan_rport(struct work_struct *work)
 {
@@ -3047,7 +3038,7 @@ fc_scsi_scan_rport(struct work_struct *work)
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 static int
 fc_vport_create(struct Scsi_Host *shost, int channel, struct device *pdev,
         struct fc_vport_identifiers  *ids, struct fc_vport **ret_vport)
@@ -3172,7 +3163,7 @@ delete_vport:
  *
  * Notes:
  *      This routine assumes no locks are held on entry.
- **/
+ */
 int
 fc_vport_terminate(struct fc_vport *vport)
 {
@@ -3232,9 +3223,8 @@ EXPORT_SYMBOL(fc_vport_terminate);
 
 /**
  * fc_vport_sched_delete - workq-based delete request for a vport
- *
  * @work:       vport to be deleted.
- **/
+ */
 static void
 fc_vport_sched_delete(struct work_struct *work)
 {
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 5428d15f23c6..ef0e74264880 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -30,10 +30,10 @@
 #include <scsi/scsi_transport_iscsi.h>
 #include <scsi/iscsi_if.h>
 
-#define ISCSI_SESSION_ATTRS 15
+#define ISCSI_SESSION_ATTRS 18
 #define ISCSI_CONN_ATTRS 11
 #define ISCSI_HOST_ATTRS 4
-#define ISCSI_TRANSPORT_VERSION "2.0-724"
+#define ISCSI_TRANSPORT_VERSION "2.0-867"
 
 struct iscsi_internal {
         int daemon_pid;
@@ -50,6 +50,7 @@ struct iscsi_internal {
 };
 
 static atomic_t iscsi_session_nr; /* sysfs session id for next new session */
+static struct workqueue_struct *iscsi_eh_timer_workq;
 
 /*
  * list of registered transports and lock that must
@@ -115,6 +116,8 @@ static struct attribute_group iscsi_transport_group = {
         .attrs = iscsi_transport_attrs,
 };
 
+
+
 static int iscsi_setup_host(struct transport_container *tc, struct device *dev,
                             struct class_device *cdev)
 {
@@ -124,13 +127,30 @@ static int iscsi_setup_host(struct transport_container *tc, struct device *dev,
         memset(ihost, 0, sizeof(*ihost));
         INIT_LIST_HEAD(&ihost->sessions);
         mutex_init(&ihost->mutex);
+
+        snprintf(ihost->unbind_workq_name, KOBJ_NAME_LEN, "iscsi_unbind_%d",
+                shost->host_no);
+        ihost->unbind_workq = create_singlethread_workqueue(
+                                                ihost->unbind_workq_name);
+        if (!ihost->unbind_workq)
+                return -ENOMEM;
+        return 0;
+}
+
+static int iscsi_remove_host(struct transport_container *tc, struct device *dev,
+                             struct class_device *cdev)
+{
+        struct Scsi_Host *shost = dev_to_shost(dev);
+        struct iscsi_host *ihost = shost->shost_data;
+
+        destroy_workqueue(ihost->unbind_workq);
         return 0;
 }
 
 static DECLARE_TRANSPORT_CLASS(iscsi_host_class,
                                "iscsi_host",
                                iscsi_setup_host,
-                               NULL,
+                               iscsi_remove_host,
                                NULL);
 
 static DECLARE_TRANSPORT_CLASS(iscsi_session_class,
@@ -252,7 +272,7 @@ static void session_recovery_timedout(struct work_struct *work)
 void iscsi_unblock_session(struct iscsi_cls_session *session)
 {
         if (!cancel_delayed_work(&session->recovery_work))
-                flush_scheduled_work();
+                flush_workqueue(iscsi_eh_timer_workq);
         scsi_target_unblock(&session->dev);
 }
 EXPORT_SYMBOL_GPL(iscsi_unblock_session);
@@ -260,11 +280,40 @@ EXPORT_SYMBOL_GPL(iscsi_unblock_session);
 void iscsi_block_session(struct iscsi_cls_session *session)
 {
         scsi_target_block(&session->dev);
-        schedule_delayed_work(&session->recovery_work,
-                             session->recovery_tmo * HZ);
+        queue_delayed_work(iscsi_eh_timer_workq, &session->recovery_work,
+                           session->recovery_tmo * HZ);
 }
 EXPORT_SYMBOL_GPL(iscsi_block_session);
 
+static void __iscsi_unbind_session(struct work_struct *work)
+{
+        struct iscsi_cls_session *session =
+                        container_of(work, struct iscsi_cls_session,
+                                     unbind_work);
+        struct Scsi_Host *shost = iscsi_session_to_shost(session);
+        struct iscsi_host *ihost = shost->shost_data;
+
+        /* Prevent new scans and make sure scanning is not in progress */
+        mutex_lock(&ihost->mutex);
+        if (list_empty(&session->host_list)) {
+                mutex_unlock(&ihost->mutex);
+                return;
+        }
+        list_del_init(&session->host_list);
+        mutex_unlock(&ihost->mutex);
+
+        scsi_remove_target(&session->dev);
+        iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION);
+}
+
+static int iscsi_unbind_session(struct iscsi_cls_session *session)
+{
+        struct Scsi_Host *shost = iscsi_session_to_shost(session);
+        struct iscsi_host *ihost = shost->shost_data;
+
+        return queue_work(ihost->unbind_workq, &session->unbind_work);
+}
+
 struct iscsi_cls_session *
 iscsi_alloc_session(struct Scsi_Host *shost,
                     struct iscsi_transport *transport)
@@ -281,6 +330,7 @@ iscsi_alloc_session(struct Scsi_Host *shost,
         INIT_DELAYED_WORK(&session->recovery_work, session_recovery_timedout);
         INIT_LIST_HEAD(&session->host_list);
         INIT_LIST_HEAD(&session->sess_list);
+        INIT_WORK(&session->unbind_work, __iscsi_unbind_session);
 
         /* this is released in the dev's release function */
         scsi_host_get(shost);
@@ -297,6 +347,7 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
 {
         struct Scsi_Host *shost = iscsi_session_to_shost(session);
         struct iscsi_host *ihost;
+        unsigned long flags;
         int err;
 
         ihost = shost->shost_data;
@@ -313,9 +364,15 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
         }
         transport_register_device(&session->dev);
 
+        spin_lock_irqsave(&sesslock, flags);
+        list_add(&session->sess_list, &sesslist);
+        spin_unlock_irqrestore(&sesslock, flags);
+
         mutex_lock(&ihost->mutex);
         list_add(&session->host_list, &ihost->sessions);
         mutex_unlock(&ihost->mutex);
+
+        iscsi_session_event(session, ISCSI_KEVENT_CREATE_SESSION);
         return 0;
 
 release_host:
@@ -328,9 +385,10 @@ EXPORT_SYMBOL_GPL(iscsi_add_session);
  * iscsi_create_session - create iscsi class session
  * @shost: scsi host
  * @transport: iscsi transport
+ * @target_id: which target
  *
  * This can be called from a LLD or iscsi_transport.
- **/
+ */
 struct iscsi_cls_session *
 iscsi_create_session(struct Scsi_Host *shost,
                      struct iscsi_transport *transport,
@@ -350,19 +408,58 @@ iscsi_create_session(struct Scsi_Host *shost,
 }
 EXPORT_SYMBOL_GPL(iscsi_create_session);
 
+static void iscsi_conn_release(struct device *dev)
+{
+        struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev);
+        struct device *parent = conn->dev.parent;
+
+        kfree(conn);
+        put_device(parent);
+}
+
+static int iscsi_is_conn_dev(const struct device *dev)
+{
+        return dev->release == iscsi_conn_release;
+}
+
+static int iscsi_iter_destroy_conn_fn(struct device *dev, void *data)
+{
+        if (!iscsi_is_conn_dev(dev))
+                return 0;
+        return iscsi_destroy_conn(iscsi_dev_to_conn(dev));
+}
+
 void iscsi_remove_session(struct iscsi_cls_session *session)
 {
         struct Scsi_Host *shost = iscsi_session_to_shost(session);
         struct iscsi_host *ihost = shost->shost_data;
+        unsigned long flags;
+        int err;
 
-        if (!cancel_delayed_work(&session->recovery_work))
-                flush_scheduled_work();
+        spin_lock_irqsave(&sesslock, flags);
+        list_del(&session->sess_list);
+        spin_unlock_irqrestore(&sesslock, flags);
 
-        mutex_lock(&ihost->mutex);
-        list_del(&session->host_list);
-        mutex_unlock(&ihost->mutex);
+        /*
+         * If we are blocked let commands flow again. The lld or iscsi
+         * layer should set up the queuecommand to fail commands.
+         */
+        iscsi_unblock_session(session);
+        iscsi_unbind_session(session);
+        /*
+         * If the session dropped while removing devices then we need to make
+         * sure it is not blocked
+         */
+        if (!cancel_delayed_work(&session->recovery_work))
+                flush_workqueue(iscsi_eh_timer_workq);
+        flush_workqueue(ihost->unbind_workq);
 
-        scsi_remove_target(&session->dev);
+        /* hw iscsi may not have removed all connections from session */
+        err = device_for_each_child(&session->dev, NULL,
+                                    iscsi_iter_destroy_conn_fn);
+        if (err)
+                dev_printk(KERN_ERR, &session->dev, "iscsi: Could not delete "
+                           "all connections for session. Error %d.\n", err);
 
         transport_unregister_device(&session->dev);
         device_del(&session->dev);
@@ -371,9 +468,9 @@ EXPORT_SYMBOL_GPL(iscsi_remove_session);
 
 void iscsi_free_session(struct iscsi_cls_session *session)
 {
+        iscsi_session_event(session, ISCSI_KEVENT_DESTROY_SESSION);
         put_device(&session->dev);
 }
-
 EXPORT_SYMBOL_GPL(iscsi_free_session);
 
 /**
@@ -382,7 +479,7 @@ EXPORT_SYMBOL_GPL(iscsi_free_session);
  *
  * Can be called by a LLD or iscsi_transport. There must not be
  * any running connections.
- **/
+ */
 int iscsi_destroy_session(struct iscsi_cls_session *session)
 {
         iscsi_remove_session(session);
@@ -391,20 +488,6 @@ int iscsi_destroy_session(struct iscsi_cls_session *session)
 }
 EXPORT_SYMBOL_GPL(iscsi_destroy_session);
 
-static void iscsi_conn_release(struct device *dev)
-{
-        struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev);
-        struct device *parent = conn->dev.parent;
-
-        kfree(conn);
-        put_device(parent);
-}
-
-static int iscsi_is_conn_dev(const struct device *dev)
-{
-        return dev->release == iscsi_conn_release;
-}
-
 /**
  * iscsi_create_conn - create iscsi class connection
  * @session: iscsi cls session
@@ -418,12 +501,13 @@ static int iscsi_is_conn_dev(const struct device *dev)
  * for software iscsi we could be trying to preallocate a connection struct
  * in which case there could be two connection structs and cid would be
  * non-zero.
- **/
+ */
 struct iscsi_cls_conn *
 iscsi_create_conn(struct iscsi_cls_session *session, uint32_t cid)
 {
         struct iscsi_transport *transport = session->transport;
         struct iscsi_cls_conn *conn;
+        unsigned long flags;
         int err;
 
         conn = kzalloc(sizeof(*conn) + transport->conndata_size, GFP_KERNEL);
@@ -452,6 +536,11 @@ iscsi_create_conn(struct iscsi_cls_session *session, uint32_t cid)
                 goto release_parent_ref;
         }
         transport_register_device(&conn->dev);
+
+        spin_lock_irqsave(&connlock, flags);
+        list_add(&conn->conn_list, &connlist);
+        conn->active = 1;
+        spin_unlock_irqrestore(&connlock, flags);
         return conn;
 
 release_parent_ref:
@@ -465,17 +554,23 @@ EXPORT_SYMBOL_GPL(iscsi_create_conn);
 
 /**
  * iscsi_destroy_conn - destroy iscsi class connection
- * @session: iscsi cls session
+ * @conn: iscsi cls session
  *
  * This can be called from a LLD or iscsi_transport.
- **/
+ */
 int iscsi_destroy_conn(struct iscsi_cls_conn *conn)
 {
+        unsigned long flags;
+
+        spin_lock_irqsave(&connlock, flags);
+        conn->active = 0;
+        list_del(&conn->conn_list);
+        spin_unlock_irqrestore(&connlock, flags);
+
         transport_unregister_device(&conn->dev);
         device_unregister(&conn->dev);
         return 0;
 }
-
 EXPORT_SYMBOL_GPL(iscsi_destroy_conn);
 
 /*
@@ -685,132 +780,74 @@ iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
 }
 
 /**
- * iscsi_if_destroy_session_done - send session destr. completion event
- * @conn: last connection for session
- *
- * This is called by HW iscsi LLDs to notify userpsace that its HW has
- * removed a session.
- **/
-int iscsi_if_destroy_session_done(struct iscsi_cls_conn *conn)
+ * iscsi_session_event - send session destr. completion event
+ * @session: iscsi class session
+ * @event: type of event
+ */
+int iscsi_session_event(struct iscsi_cls_session *session,
+                        enum iscsi_uevent_e event)
 {
         struct iscsi_internal *priv;
-        struct iscsi_cls_session *session;
         struct Scsi_Host *shost;
         struct iscsi_uevent *ev;
         struct sk_buff  *skb;
         struct nlmsghdr *nlh;
-        unsigned long flags;
         int rc, len = NLMSG_SPACE(sizeof(*ev));
 
-        priv = iscsi_if_transport_lookup(conn->transport);
+        priv = iscsi_if_transport_lookup(session->transport);
         if (!priv)
                 return -EINVAL;
-
-        session = iscsi_dev_to_session(conn->dev.parent);
         shost = iscsi_session_to_shost(session);
 
         skb = alloc_skb(len, GFP_KERNEL);
         if (!skb) {
-                dev_printk(KERN_ERR, &conn->dev, "Cannot notify userspace of "
-                          "session creation event\n");
+                dev_printk(KERN_ERR, &session->dev, "Cannot notify userspace "
+                          "of session event %u\n", event);
                 return -ENOMEM;
         }
 
         nlh = __nlmsg_put(skb, priv->daemon_pid, 0, 0, (len - sizeof(*nlh)), 0);
         ev = NLMSG_DATA(nlh);
-        ev->transport_handle = iscsi_handle(conn->transport);
-        ev->type = ISCSI_KEVENT_DESTROY_SESSION;
-        ev->r.d_session.host_no = shost->host_no;
-        ev->r.d_session.sid = session->sid;
-
-        /*
-         * this will occur if the daemon is not up, so we just warn
-         * the user and when the daemon is restarted it will handle it
-         */
-        rc = iscsi_broadcast_skb(skb, GFP_KERNEL);
-        if (rc < 0)
-                dev_printk(KERN_ERR, &conn->dev, "Cannot notify userspace of "
-                          "session destruction event. Check iscsi daemon\n");
-
-        spin_lock_irqsave(&sesslock, flags);
-        list_del(&session->sess_list);
-        spin_unlock_irqrestore(&sesslock, flags);
+        ev->transport_handle = iscsi_handle(session->transport);
 
-        spin_lock_irqsave(&connlock, flags);
-        conn->active = 0;
-        list_del(&conn->conn_list);
-        spin_unlock_irqrestore(&connlock, flags);
-
-        return rc;
-}
-EXPORT_SYMBOL_GPL(iscsi_if_destroy_session_done);
-
-/**
- * iscsi_if_create_session_done - send session creation completion event
- * @conn: leading connection for session
- *
- * This is called by HW iscsi LLDs to notify userpsace that its HW has
- * created a session or a existing session is back in the logged in state.
- **/
-int iscsi_if_create_session_done(struct iscsi_cls_conn *conn)
-{
-        struct iscsi_internal *priv;
-        struct iscsi_cls_session *session;
-        struct Scsi_Host *shost;
-        struct iscsi_uevent *ev;
-        struct sk_buff  *skb;
-        struct nlmsghdr *nlh;
-        unsigned long flags;
-        int rc, len = NLMSG_SPACE(sizeof(*ev));
-
-        priv = iscsi_if_transport_lookup(conn->transport);
-        if (!priv)
+        ev->type = event;
+        switch (event) {
+        case ISCSI_KEVENT_DESTROY_SESSION:
+                ev->r.d_session.host_no = shost->host_no;
+                ev->r.d_session.sid = session->sid;
+                break;
+        case ISCSI_KEVENT_CREATE_SESSION:
+                ev->r.c_session_ret.host_no = shost->host_no;
+                ev->r.c_session_ret.sid = session->sid;
+                break;
+        case ISCSI_KEVENT_UNBIND_SESSION:
+                ev->r.unbind_session.host_no = shost->host_no;
+                ev->r.unbind_session.sid = session->sid;
+                break;
+        default:
+                dev_printk(KERN_ERR, &session->dev, "Invalid event %u.\n",
+                           event);
+                kfree_skb(skb);
                 return -EINVAL;
-
-        session = iscsi_dev_to_session(conn->dev.parent);
-        shost = iscsi_session_to_shost(session);
-
-        skb = alloc_skb(len, GFP_KERNEL);
-        if (!skb) {
-                dev_printk(KERN_ERR, &conn->dev, "Cannot notify userspace of "
-                          "session creation event\n");
-                return -ENOMEM;
         }
 
-        nlh = __nlmsg_put(skb, priv->daemon_pid, 0, 0, (len - sizeof(*nlh)), 0);
-        ev = NLMSG_DATA(nlh);
-        ev->transport_handle = iscsi_handle(conn->transport);
-        ev->type = ISCSI_UEVENT_CREATE_SESSION;
-        ev->r.c_session_ret.host_no = shost->host_no;
-        ev->r.c_session_ret.sid = session->sid;
-
         /*
          * this will occur if the daemon is not up, so we just warn
          * the user and when the daemon is restarted it will handle it
          */
         rc = iscsi_broadcast_skb(skb, GFP_KERNEL);
         if (rc < 0)
-                dev_printk(KERN_ERR, &conn->dev, "Cannot notify userspace of "
-                          "session creation event. Check iscsi daemon\n");
-
-        spin_lock_irqsave(&sesslock, flags);
-        list_add(&session->sess_list, &sesslist);
-        spin_unlock_irqrestore(&sesslock, flags);
-
-        spin_lock_irqsave(&connlock, flags);
-        list_add(&conn->conn_list, &connlist);
-        conn->active = 1;
-        spin_unlock_irqrestore(&connlock, flags);
+                dev_printk(KERN_ERR, &session->dev, "Cannot notify userspace "
+                          "of session event %u. Check iscsi daemon\n", event);
         return rc;
 }
-EXPORT_SYMBOL_GPL(iscsi_if_create_session_done);
+EXPORT_SYMBOL_GPL(iscsi_session_event);
 
 static int
 iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_uevent *ev)
 {
         struct iscsi_transport *transport = priv->iscsi_transport;
         struct iscsi_cls_session *session;
-        unsigned long flags;
         uint32_t hostno;
 
         session = transport->create_session(transport, &priv->t,
@@ -821,10 +858,6 @@ iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_uevent *ev)
         if (!session)
                 return -ENOMEM;
 
-        spin_lock_irqsave(&sesslock, flags);
-        list_add(&session->sess_list, &sesslist);
-        spin_unlock_irqrestore(&sesslock, flags);
-
         ev->r.c_session_ret.host_no = hostno;
         ev->r.c_session_ret.sid = session->sid;
         return 0;
@@ -835,7 +868,6 @@ iscsi_if_create_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev)
 {
         struct iscsi_cls_conn *conn;
         struct iscsi_cls_session *session;
-        unsigned long flags;
 
         session = iscsi_session_lookup(ev->u.c_conn.sid);
         if (!session) {
@@ -854,28 +886,17 @@ iscsi_if_create_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev)
 
         ev->r.c_conn_ret.sid = session->sid;
         ev->r.c_conn_ret.cid = conn->cid;
-
-        spin_lock_irqsave(&connlock, flags);
-        list_add(&conn->conn_list, &connlist);
-        conn->active = 1;
-        spin_unlock_irqrestore(&connlock, flags);
-
         return 0;
 }
 
 static int
 iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev)
 {
-        unsigned long flags;
         struct iscsi_cls_conn *conn;
 
         conn = iscsi_conn_lookup(ev->u.d_conn.sid, ev->u.d_conn.cid);
         if (!conn)
                 return -EINVAL;
-        spin_lock_irqsave(&connlock, flags);
-        conn->active = 0;
-        list_del(&conn->conn_list);
-        spin_unlock_irqrestore(&connlock, flags);
 
         if (transport->destroy_conn)
                 transport->destroy_conn(conn);
@@ -1002,7 +1023,6 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         struct iscsi_internal *priv;
         struct iscsi_cls_session *session;
         struct iscsi_cls_conn *conn;
-        unsigned long flags;
 
         priv = iscsi_if_transport_lookup(iscsi_ptr(ev->transport_handle));
         if (!priv)
@@ -1020,13 +1040,16 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 break;
         case ISCSI_UEVENT_DESTROY_SESSION:
                 session = iscsi_session_lookup(ev->u.d_session.sid);
-                if (session) {
-                        spin_lock_irqsave(&sesslock, flags);
-                        list_del(&session->sess_list);
-                        spin_unlock_irqrestore(&sesslock, flags);
-
+                if (session)
                         transport->destroy_session(session);
-                } else
+                else
+                        err = -EINVAL;
+                break;
+        case ISCSI_UEVENT_UNBIND_SESSION:
+                session = iscsi_session_lookup(ev->u.d_session.sid);
+                if (session)
+                        iscsi_unbind_session(session);
+                else
                         err = -EINVAL;
                 break;
         case ISCSI_UEVENT_CREATE_CONN:
@@ -1179,6 +1202,8 @@ iscsi_conn_attr(port, ISCSI_PARAM_CONN_PORT);
 iscsi_conn_attr(exp_statsn, ISCSI_PARAM_EXP_STATSN);
 iscsi_conn_attr(persistent_address, ISCSI_PARAM_PERSISTENT_ADDRESS);
 iscsi_conn_attr(address, ISCSI_PARAM_CONN_ADDRESS);
+iscsi_conn_attr(ping_tmo, ISCSI_PARAM_PING_TMO);
+iscsi_conn_attr(recv_tmo, ISCSI_PARAM_RECV_TMO);
 
 #define iscsi_cdev_to_session(_cdev) \
         iscsi_dev_to_session(_cdev->dev)
@@ -1217,6 +1242,9 @@ iscsi_session_attr(username, ISCSI_PARAM_USERNAME, 1);
 iscsi_session_attr(username_in, ISCSI_PARAM_USERNAME_IN, 1);
 iscsi_session_attr(password, ISCSI_PARAM_PASSWORD, 1);
 iscsi_session_attr(password_in, ISCSI_PARAM_PASSWORD_IN, 1);
+iscsi_session_attr(fast_abort, ISCSI_PARAM_FAST_ABORT, 0);
+iscsi_session_attr(abort_tmo, ISCSI_PARAM_ABORT_TMO, 0);
+iscsi_session_attr(lu_reset_tmo, ISCSI_PARAM_LU_RESET_TMO, 0);
 
 #define iscsi_priv_session_attr_show(field, format)                     \
 static ssize_t                                                          \
@@ -1413,6 +1441,8 @@ iscsi_register_transport(struct iscsi_transport *tt)
         SETUP_CONN_RD_ATTR(exp_statsn, ISCSI_EXP_STATSN);
         SETUP_CONN_RD_ATTR(persistent_address, ISCSI_PERSISTENT_ADDRESS);
         SETUP_CONN_RD_ATTR(persistent_port, ISCSI_PERSISTENT_PORT);
+        SETUP_CONN_RD_ATTR(ping_tmo, ISCSI_PING_TMO);
+        SETUP_CONN_RD_ATTR(recv_tmo, ISCSI_RECV_TMO);
 
         BUG_ON(count > ISCSI_CONN_ATTRS);
         priv->conn_attrs[count] = NULL;
@@ -1438,6 +1468,9 @@ iscsi_register_transport(struct iscsi_transport *tt)
         SETUP_SESSION_RD_ATTR(password_in, ISCSI_USERNAME_IN);
         SETUP_SESSION_RD_ATTR(username, ISCSI_PASSWORD);
         SETUP_SESSION_RD_ATTR(username_in, ISCSI_PASSWORD_IN);
+        SETUP_SESSION_RD_ATTR(fast_abort, ISCSI_FAST_ABORT);
+        SETUP_SESSION_RD_ATTR(abort_tmo, ISCSI_ABORT_TMO);
+        SETUP_SESSION_RD_ATTR(lu_reset_tmo,ISCSI_LU_RESET_TMO);
         SETUP_PRIV_SESSION_RD_ATTR(recovery_tmo);
 
         BUG_ON(count > ISCSI_SESSION_ATTRS);
@@ -1518,8 +1551,14 @@ static __init int iscsi_transport_init(void)
                 goto unregister_session_class;
         }
 
+        iscsi_eh_timer_workq = create_singlethread_workqueue("iscsi_eh");
+        if (!iscsi_eh_timer_workq)
+                goto release_nls;
+
         return 0;
 
+release_nls:
+        sock_release(nls->sk_socket);
 unregister_session_class:
         transport_class_unregister(&iscsi_session_class);
 unregister_conn_class:
@@ -1533,6 +1572,7 @@ unregister_transport_class:
 
 static void __exit iscsi_transport_exit(void)
 {
+        destroy_workqueue(iscsi_eh_timer_workq);
         sock_release(nls->sk_socket);
         transport_class_unregister(&iscsi_connection_class);
         transport_class_unregister(&iscsi_session_class);
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 3120f4b3a11a..f2149d0bb999 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -173,6 +173,7 @@ static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
 
                 handler = to_sas_internal(shost->transportt)->f->smp_handler;
                 ret = handler(shost, rphy, req);
+                req->errors = ret;
 
                 spin_lock_irq(q->queue_lock);
 
@@ -323,7 +324,7 @@ static int do_sas_phy_delete(struct device *dev, void *data)
 }
 
 /**
- * sas_remove_children  --  tear down a devices SAS data structures
+ * sas_remove_children  -  tear down a devices SAS data structures
  * @dev:        device belonging to the sas object
  *
  * Removes all SAS PHYs and remote PHYs for a given object
@@ -336,7 +337,7 @@ void sas_remove_children(struct device *dev)
 EXPORT_SYMBOL(sas_remove_children);
 
 /**
- * sas_remove_host  --  tear down a Scsi_Host's SAS data structures
+ * sas_remove_host  -  tear down a Scsi_Host's SAS data structures
  * @shost:      Scsi Host that is torn down
  *
  * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
@@ -577,7 +578,7 @@ static void sas_phy_release(struct device *dev)
 }
 
 /**
- * sas_phy_alloc  --  allocates and initialize a SAS PHY structure
+ * sas_phy_alloc  -  allocates and initialize a SAS PHY structure
  * @parent:     Parent device
  * @number:     Phy index
  *
@@ -618,7 +619,7 @@ struct sas_phy *sas_phy_alloc(struct device *parent, int number)
 EXPORT_SYMBOL(sas_phy_alloc);
 
 /**
- * sas_phy_add  --  add a SAS PHY to the device hierarchy
+ * sas_phy_add  -  add a SAS PHY to the device hierarchy
  * @phy:        The PHY to be added
  *
  * Publishes a SAS PHY to the rest of the system.
@@ -638,7 +639,7 @@ int sas_phy_add(struct sas_phy *phy)
 EXPORT_SYMBOL(sas_phy_add);
 
 /**
- * sas_phy_free  --  free a SAS PHY
+ * sas_phy_free  -  free a SAS PHY
  * @phy:        SAS PHY to free
  *
  * Frees the specified SAS PHY.
@@ -655,7 +656,7 @@ void sas_phy_free(struct sas_phy *phy)
 EXPORT_SYMBOL(sas_phy_free);
 
 /**
- * sas_phy_delete  --  remove SAS PHY
+ * sas_phy_delete  -  remove SAS PHY
  * @phy:        SAS PHY to remove
  *
  * Removes the specified SAS PHY.  If the SAS PHY has an
@@ -677,7 +678,7 @@ sas_phy_delete(struct sas_phy *phy)
 EXPORT_SYMBOL(sas_phy_delete);
 
 /**
- * scsi_is_sas_phy  --  check if a struct device represents a SAS PHY
+ * scsi_is_sas_phy  -  check if a struct device represents a SAS PHY
  * @dev:        device to check
  *
  * Returns:
@@ -843,7 +844,6 @@ EXPORT_SYMBOL(sas_port_alloc_num);
 
 /**
  * sas_port_add - add a SAS port to the device hierarchy
- *
  * @port:       port to be added
  *
  * publishes a port to the rest of the system
@@ -868,7 +868,7 @@ int sas_port_add(struct sas_port *port)
 EXPORT_SYMBOL(sas_port_add);
 
 /**
- * sas_port_free  --  free a SAS PORT
+ * sas_port_free  -  free a SAS PORT
  * @port:       SAS PORT to free
  *
  * Frees the specified SAS PORT.
@@ -885,7 +885,7 @@ void sas_port_free(struct sas_port *port)
 EXPORT_SYMBOL(sas_port_free);
 
 /**
- * sas_port_delete  --  remove SAS PORT
+ * sas_port_delete  -  remove SAS PORT
  * @port:       SAS PORT to remove
  *
  * Removes the specified SAS PORT.  If the SAS PORT has an
@@ -924,7 +924,7 @@ void sas_port_delete(struct sas_port *port)
 EXPORT_SYMBOL(sas_port_delete);
 
 /**
- * scsi_is_sas_port --  check if a struct device represents a SAS port
+ * scsi_is_sas_port -  check if a struct device represents a SAS port
  * @dev:        device to check
  *
  * Returns:
@@ -1309,6 +1309,7 @@ static void sas_rphy_initialize(struct sas_rphy *rphy)
 
 /**
  * sas_end_device_alloc - allocate an rphy for an end device
+ * @parent: which port
  *
  * Allocates an SAS remote PHY structure, connected to @parent.
  *
@@ -1345,6 +1346,8 @@ EXPORT_SYMBOL(sas_end_device_alloc);
 
 /**
  * sas_expander_alloc - allocate an rphy for an end device
+ * @parent: which port
+ * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
  *
  * Allocates an SAS remote PHY structure, connected to @parent.
  *
@@ -1383,7 +1386,7 @@ struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
 EXPORT_SYMBOL(sas_expander_alloc);
 
 /**
- * sas_rphy_add  --  add a SAS remote PHY to the device hierarchy
+ * sas_rphy_add  -  add a SAS remote PHY to the device hierarchy
  * @rphy:       The remote PHY to be added
  *
  * Publishes a SAS remote PHY to the rest of the system.
@@ -1430,8 +1433,8 @@ int sas_rphy_add(struct sas_rphy *rphy)
 EXPORT_SYMBOL(sas_rphy_add);
 
 /**
- * sas_rphy_free  --  free a SAS remote PHY
- * @rphy        SAS remote PHY to free
+ * sas_rphy_free  -  free a SAS remote PHY
+ * @rphy: SAS remote PHY to free
  *
  * Frees the specified SAS remote PHY.
  *
@@ -1459,7 +1462,7 @@ void sas_rphy_free(struct sas_rphy *rphy)
 EXPORT_SYMBOL(sas_rphy_free);
 
 /**
- * sas_rphy_delete  --  remove and free SAS remote PHY
+ * sas_rphy_delete  -  remove and free SAS remote PHY
  * @rphy:       SAS remote PHY to remove and free
  *
  * Removes the specified SAS remote PHY and frees it.
@@ -1473,7 +1476,7 @@ sas_rphy_delete(struct sas_rphy *rphy)
 EXPORT_SYMBOL(sas_rphy_delete);
 
 /**
- * sas_rphy_remove  --  remove SAS remote PHY
+ * sas_rphy_remove  -  remove SAS remote PHY
  * @rphy:       SAS remote phy to remove
  *
  * Removes the specified SAS remote PHY.
@@ -1504,7 +1507,7 @@ sas_rphy_remove(struct sas_rphy *rphy)
 EXPORT_SYMBOL(sas_rphy_remove);
 
 /**
- * scsi_is_sas_rphy  --  check if a struct device represents a SAS remote PHY
+ * scsi_is_sas_rphy  -  check if a struct device represents a SAS remote PHY
  * @dev:        device to check
  *
  * Returns:
@@ -1604,7 +1607,7 @@ static int sas_user_scan(struct Scsi_Host *shost, uint channel,
         SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
 
 /**
- * sas_attach_transport  --  instantiate SAS transport template
+ * sas_attach_transport  -  instantiate SAS transport template
  * @ft:         SAS transport class function template
  */
 struct scsi_transport_template *
@@ -1715,7 +1718,7 @@ sas_attach_transport(struct sas_function_template *ft)
 EXPORT_SYMBOL(sas_attach_transport);
 
 /**
- * sas_release_transport  --  release SAS transport template instance
+ * sas_release_transport  -  release SAS transport template instance
  * @t:          transport template instance
  */
 void sas_release_transport(struct scsi_transport_template *t)
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index 4df21c92ff1e..1fb60313a516 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -52,13 +52,6 @@
 struct spi_internal {
         struct scsi_transport_template t;
         struct spi_function_template *f;
-        /* The actual attributes */
-        struct class_device_attribute private_attrs[SPI_NUM_ATTRS];
-        /* The array of null terminated pointers to attributes 
-         * needed by scsi_sysfs.c */
-        struct class_device_attribute *attrs[SPI_NUM_ATTRS + SPI_OTHER_ATTRS + 1];
-        struct class_device_attribute private_host_attrs[SPI_HOST_ATTRS];
-        struct class_device_attribute *host_attrs[SPI_HOST_ATTRS + 1];
 };
 
 #define to_spi_internal(tmpl)   container_of(tmpl, struct spi_internal, t)
@@ -174,17 +167,20 @@ static int spi_host_setup(struct transport_container *tc, struct device *dev,
         return 0;
 }
 
+static int spi_host_configure(struct transport_container *tc,
+                              struct device *dev,
+                              struct class_device *cdev);
+
 static DECLARE_TRANSPORT_CLASS(spi_host_class,
                                "spi_host",
                                spi_host_setup,
                                NULL,
-                               NULL);
+                               spi_host_configure);
 
 static int spi_host_match(struct attribute_container *cont,
                           struct device *dev)
 {
         struct Scsi_Host *shost;
-        struct spi_internal *i;
 
         if (!scsi_is_host_device(dev))
                 return 0;
@@ -194,11 +190,13 @@ static int spi_host_match(struct attribute_container *cont,
             != &spi_host_class.class)
                 return 0;
 
-        i = to_spi_internal(shost->transportt);
-        
-        return &i->t.host_attrs.ac == cont;
+        return &shost->transportt->host_attrs.ac == cont;
 }
 
+static int spi_target_configure(struct transport_container *tc,
+                                struct device *dev,
+                                struct class_device *cdev);
+
 static int spi_device_configure(struct transport_container *tc,
                                 struct device *dev,
                                 struct class_device *cdev)
@@ -300,8 +298,10 @@ store_spi_transport_##field(struct class_device *cdev, const char *buf, \
         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);    \
         struct spi_internal *i = to_spi_internal(shost->transportt);    \
                                                                         \
+        if (!i->f->set_##field)                                         \
+                return -EINVAL;                                         \
         val = simple_strtoul(buf, NULL, 0);                             \
-        i->f->set_##field(starget, val);                        \
+        i->f->set_##field(starget, val);                                \
         return count;                                                   \
 }
 
@@ -317,6 +317,8 @@ store_spi_transport_##field(struct class_device *cdev, const char *buf, \
         struct spi_transport_attrs *tp                                  \
                 = (struct spi_transport_attrs *)&starget->starget_data; \
                                                                         \
+        if (i->f->set_##field)                                          \
+                return -EINVAL;                                         \
         val = simple_strtoul(buf, NULL, 0);                             \
         if (val > tp->max_##field)                                      \
                 val = tp->max_##field;                                  \
@@ -327,14 +329,14 @@ store_spi_transport_##field(struct class_device *cdev, const char *buf, \
 #define spi_transport_rd_attr(field, format_string)                     \
         spi_transport_show_function(field, format_string)               \
         spi_transport_store_function(field, format_string)              \
-static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR,                      \
+static CLASS_DEVICE_ATTR(field, S_IRUGO,                                \
                          show_spi_transport_##field,                    \
                          store_spi_transport_##field);
 
 #define spi_transport_simple_attr(field, format_string)                 \
         spi_transport_show_simple(field, format_string)                 \
         spi_transport_store_simple(field, format_string)                \
-static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR,                      \
+static CLASS_DEVICE_ATTR(field, S_IRUGO,                                \
                          show_spi_transport_##field,                    \
                          store_spi_transport_##field);
 
@@ -342,7 +344,7 @@ static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR,			\
         spi_transport_show_function(field, format_string)               \
         spi_transport_store_max(field, format_string)                   \
         spi_transport_simple_attr(max_##field, format_string)           \
-static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR,                      \
+static CLASS_DEVICE_ATTR(field, S_IRUGO,                                \
                          show_spi_transport_##field,                    \
                          store_spi_transport_##field);
 
@@ -472,6 +474,9 @@ store_spi_transport_period(struct class_device *cdev, const char *buf,
                 (struct spi_transport_attrs *)&starget->starget_data;
         int period, retval;
 
+        if (!i->f->set_period)
+                return -EINVAL;
+
         retval = store_spi_transport_period_helper(cdev, buf, count, &period);
 
         if (period < tp->min_period)
@@ -482,7 +487,7 @@ store_spi_transport_period(struct class_device *cdev, const char *buf,
         return retval;
 }
 
-static CLASS_DEVICE_ATTR(period, S_IRUGO | S_IWUSR, 
+static CLASS_DEVICE_ATTR(period, S_IRUGO,
                          show_spi_transport_period,
                          store_spi_transport_period);
 
@@ -490,9 +495,14 @@ static ssize_t
 show_spi_transport_min_period(struct class_device *cdev, char *buf)
 {
         struct scsi_target *starget = transport_class_to_starget(cdev);
+        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+        struct spi_internal *i = to_spi_internal(shost->transportt);
         struct spi_transport_attrs *tp =
                 (struct spi_transport_attrs *)&starget->starget_data;
 
+        if (!i->f->set_period)
+                return -EINVAL;
+
         return show_spi_transport_period_helper(buf, tp->min_period);
 }
 
@@ -509,7 +519,7 @@ store_spi_transport_min_period(struct class_device *cdev, const char *buf,
 }
 
 
-static CLASS_DEVICE_ATTR(min_period, S_IRUGO | S_IWUSR, 
+static CLASS_DEVICE_ATTR(min_period, S_IRUGO,
                          show_spi_transport_min_period,
                          store_spi_transport_min_period);
 
@@ -531,12 +541,15 @@ static ssize_t store_spi_host_signalling(struct class_device *cdev,
         struct spi_internal *i = to_spi_internal(shost->transportt);
         enum spi_signal_type type = spi_signal_to_value(buf);
 
+        if (!i->f->set_signalling)
+                return -EINVAL;
+
         if (type != SPI_SIGNAL_UNKNOWN)
                 i->f->set_signalling(shost, type);
 
         return count;
 }
-static CLASS_DEVICE_ATTR(signalling, S_IRUGO | S_IWUSR,
+static CLASS_DEVICE_ATTR(signalling, S_IRUGO,
                          show_spi_host_signalling,
                          store_spi_host_signalling);
 
@@ -1262,35 +1275,6 @@ int spi_print_msg(const unsigned char *msg)
 EXPORT_SYMBOL(spi_print_msg);
 #endif /* ! CONFIG_SCSI_CONSTANTS */
 
-#define SETUP_ATTRIBUTE(field)                                          \
-        i->private_attrs[count] = class_device_attr_##field;            \
-        if (!i->f->set_##field) {                                       \
-                i->private_attrs[count].attr.mode = S_IRUGO;            \
-                i->private_attrs[count].store = NULL;                   \
-        }                                                               \
-        i->attrs[count] = &i->private_attrs[count];                     \
-        if (i->f->show_##field)                                         \
-                count++
-
-#define SETUP_RELATED_ATTRIBUTE(field, rel_field)                       \
-        i->private_attrs[count] = class_device_attr_##field;            \
-        if (!i->f->set_##rel_field) {                                   \
-                i->private_attrs[count].attr.mode = S_IRUGO;            \
-                i->private_attrs[count].store = NULL;                   \
-        }                                                               \
-        i->attrs[count] = &i->private_attrs[count];                     \
-        if (i->f->show_##rel_field)                                     \
-                count++
-
-#define SETUP_HOST_ATTRIBUTE(field)                                     \
-        i->private_host_attrs[count] = class_device_attr_##field;       \
-        if (!i->f->set_##field) {                                       \
-                i->private_host_attrs[count].attr.mode = S_IRUGO;       \
-                i->private_host_attrs[count].store = NULL;              \
-        }                                                               \
-        i->host_attrs[count] = &i->private_host_attrs[count];           \
-        count++
-
 static int spi_device_match(struct attribute_container *cont,
                             struct device *dev)
 {
@@ -1343,16 +1327,156 @@ static DECLARE_TRANSPORT_CLASS(spi_transport_class,
                                "spi_transport",
                                spi_setup_transport_attrs,
                                NULL,
-                               NULL);
+                               spi_target_configure);
 
 static DECLARE_ANON_TRANSPORT_CLASS(spi_device_class,
                                     spi_device_match,
                                     spi_device_configure);
 
+static struct attribute *host_attributes[] = {
+        &class_device_attr_signalling.attr,
+        NULL
+};
+
+static struct attribute_group host_attribute_group = {
+        .attrs = host_attributes,
+};
+
+static int spi_host_configure(struct transport_container *tc,
+                              struct device *dev,
+                              struct class_device *cdev)
+{
+        struct kobject *kobj = &cdev->kobj;
+        struct Scsi_Host *shost = transport_class_to_shost(cdev);
+        struct spi_internal *si = to_spi_internal(shost->transportt);
+        struct attribute *attr = &class_device_attr_signalling.attr;
+        int rc = 0;
+
+        if (si->f->set_signalling)
+                rc = sysfs_chmod_file(kobj, attr, attr->mode | S_IWUSR);
+
+        return rc;
+}
+
+/* returns true if we should be showing the variable.  Also
+ * overloads the return by setting 1<<1 if the attribute should
+ * be writeable */
+#define TARGET_ATTRIBUTE_HELPER(name) \
+        (si->f->show_##name ? 1 : 0) + \
+        (si->f->set_##name ? 2 : 0)
+
+static int target_attribute_is_visible(struct kobject *kobj,
+                                       struct attribute *attr, int i)
+{
+        struct class_device *cdev =
+                container_of(kobj, struct class_device, kobj);
+        struct scsi_target *starget = transport_class_to_starget(cdev);
+        struct Scsi_Host *shost = transport_class_to_shost(cdev);
+        struct spi_internal *si = to_spi_internal(shost->transportt);
+
+        if (attr == &class_device_attr_period.attr &&
+            spi_support_sync(starget))
+                return TARGET_ATTRIBUTE_HELPER(period);
+        else if (attr == &class_device_attr_min_period.attr &&
+                 spi_support_sync(starget))
+                return TARGET_ATTRIBUTE_HELPER(period);
+        else if (attr == &class_device_attr_offset.attr &&
+                 spi_support_sync(starget))
+                return TARGET_ATTRIBUTE_HELPER(offset);
+        else if (attr == &class_device_attr_max_offset.attr &&
+                 spi_support_sync(starget))
+                return TARGET_ATTRIBUTE_HELPER(offset);
+        else if (attr == &class_device_attr_width.attr &&
+                 spi_support_wide(starget))
+                return TARGET_ATTRIBUTE_HELPER(width);
+        else if (attr == &class_device_attr_max_width.attr &&
+                 spi_support_wide(starget))
+                return TARGET_ATTRIBUTE_HELPER(width);
+        else if (attr == &class_device_attr_iu.attr &&
+                 spi_support_ius(starget))
+                return TARGET_ATTRIBUTE_HELPER(iu);
+        else if (attr == &class_device_attr_dt.attr &&
+                 spi_support_dt(starget))
+                return TARGET_ATTRIBUTE_HELPER(dt);
+        else if (attr == &class_device_attr_qas.attr &&
+                 spi_support_qas(starget))
+                return TARGET_ATTRIBUTE_HELPER(qas);
+        else if (attr == &class_device_attr_wr_flow.attr &&
+                 spi_support_ius(starget))
+                return TARGET_ATTRIBUTE_HELPER(wr_flow);
+        else if (attr == &class_device_attr_rd_strm.attr &&
+                 spi_support_ius(starget))
+                return TARGET_ATTRIBUTE_HELPER(rd_strm);
+        else if (attr == &class_device_attr_rti.attr &&
+                 spi_support_ius(starget))
+                return TARGET_ATTRIBUTE_HELPER(rti);
+        else if (attr == &class_device_attr_pcomp_en.attr &&
+                 spi_support_ius(starget))
+                return TARGET_ATTRIBUTE_HELPER(pcomp_en);
+        else if (attr == &class_device_attr_hold_mcs.attr &&
+                 spi_support_ius(starget))
+                return TARGET_ATTRIBUTE_HELPER(hold_mcs);
+        else if (attr == &class_device_attr_revalidate.attr)
+                return 1;
+
+        return 0;
+}
+
+static struct attribute *target_attributes[] = {
+        &class_device_attr_period.attr,
+        &class_device_attr_min_period.attr,
+        &class_device_attr_offset.attr,
+        &class_device_attr_max_offset.attr,
+        &class_device_attr_width.attr,
+        &class_device_attr_max_width.attr,
+        &class_device_attr_iu.attr,
+        &class_device_attr_dt.attr,
+        &class_device_attr_qas.attr,
+        &class_device_attr_wr_flow.attr,
+        &class_device_attr_rd_strm.attr,
+        &class_device_attr_rti.attr,
+        &class_device_attr_pcomp_en.attr,
+        &class_device_attr_hold_mcs.attr,
+        &class_device_attr_revalidate.attr,
+        NULL
+};
+
+static struct attribute_group target_attribute_group = {
+        .attrs = target_attributes,
+        .is_visible = target_attribute_is_visible,
+};
+
+static int spi_target_configure(struct transport_container *tc,
+                                struct device *dev,
+                                struct class_device *cdev)
+{
+        struct kobject *kobj = &cdev->kobj;
+        int i;
+        struct attribute *attr;
+        int rc;
+
+        for (i = 0; (attr = target_attributes[i]) != NULL; i++) {
+                int j = target_attribute_group.is_visible(kobj, attr, i);
+
+                /* FIXME: as well as returning -EEXIST, which we'd like
+                 * to ignore, sysfs also does a WARN_ON and dumps a trace,
+                 * which is bad, so temporarily, skip attributes that are
+                 * already visible (the revalidate one) */
+                if (j && attr != &class_device_attr_revalidate.attr)
+                        rc = sysfs_add_file_to_group(kobj, attr,
+                                                target_attribute_group.name);
+                /* and make the attribute writeable if we have a set
+                 * function */
+                if ((j & 1))
+                        rc = sysfs_chmod_file(kobj, attr, attr->mode | S_IWUSR);
+        }
+
+        return 0;
+}
+
 struct scsi_transport_template *
 spi_attach_transport(struct spi_function_template *ft)
 {
-        int count = 0;
         struct spi_internal *i = kzalloc(sizeof(struct spi_internal),
                                          GFP_KERNEL);
 
@@ -1360,47 +1484,17 @@ spi_attach_transport(struct spi_function_template *ft)
                 return NULL;
 
         i->t.target_attrs.ac.class = &spi_transport_class.class;
-        i->t.target_attrs.ac.attrs = &i->attrs[0];
+        i->t.target_attrs.ac.grp = &target_attribute_group;
         i->t.target_attrs.ac.match = spi_target_match;
         transport_container_register(&i->t.target_attrs);
         i->t.target_size = sizeof(struct spi_transport_attrs);
         i->t.host_attrs.ac.class = &spi_host_class.class;
-        i->t.host_attrs.ac.attrs = &i->host_attrs[0];
+        i->t.host_attrs.ac.grp = &host_attribute_group;
         i->t.host_attrs.ac.match = spi_host_match;
         transport_container_register(&i->t.host_attrs);
         i->t.host_size = sizeof(struct spi_host_attrs);
         i->f = ft;
 
-        SETUP_ATTRIBUTE(period);
-        SETUP_RELATED_ATTRIBUTE(min_period, period);
-        SETUP_ATTRIBUTE(offset);
-        SETUP_RELATED_ATTRIBUTE(max_offset, offset);
-        SETUP_ATTRIBUTE(width);
-        SETUP_RELATED_ATTRIBUTE(max_width, width);
-        SETUP_ATTRIBUTE(iu);
-        SETUP_ATTRIBUTE(dt);
-        SETUP_ATTRIBUTE(qas);
-        SETUP_ATTRIBUTE(wr_flow);
-        SETUP_ATTRIBUTE(rd_strm);
-        SETUP_ATTRIBUTE(rti);
-        SETUP_ATTRIBUTE(pcomp_en);
-        SETUP_ATTRIBUTE(hold_mcs);
-
-        /* if you add an attribute but forget to increase SPI_NUM_ATTRS
-         * this bug will trigger */
-        BUG_ON(count > SPI_NUM_ATTRS);
-
-        i->attrs[count++] = &class_device_attr_revalidate;
-
-        i->attrs[count] = NULL;
-
-        count = 0;
-        SETUP_HOST_ATTRIBUTE(signalling);
-
-        BUG_ON(count > SPI_HOST_ATTRS);
-
-        i->host_attrs[count] = NULL;
-
         return &i->t;
 }
 EXPORT_SYMBOL(spi_attach_transport);
diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c
index 65c584db33bd..2445c98ae95e 100644
--- a/drivers/scsi/scsi_transport_srp.c
+++ b/drivers/scsi/scsi_transport_srp.c
@@ -185,11 +185,10 @@ static int srp_host_match(struct attribute_container *cont, struct device *dev)
 
 /**
  * srp_rport_add - add a SRP remote port to the device hierarchy
- *
  * @shost:      scsi host the remote port is connected to.
  * @ids:        The port id for the remote port.
  *
- * publishes a port to the rest of the system
+ * Publishes a port to the rest of the system.
  */
 struct srp_rport *srp_rport_add(struct Scsi_Host *shost,
                                 struct srp_rport_identifiers *ids)
@@ -242,8 +241,8 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost,
 EXPORT_SYMBOL_GPL(srp_rport_add);
 
 /**
- * srp_rport_del  --  remove a SRP remote port
- * @port:       SRP remote port to remove
+ * srp_rport_del  -  remove a SRP remote port
+ * @rport:      SRP remote port to remove
  *
  * Removes the specified SRP remote port.
  */
@@ -271,7 +270,7 @@ static int do_srp_rport_del(struct device *dev, void *data)
 }
 
 /**
- * srp_remove_host  --  tear down a Scsi_Host's SRP data structures
+ * srp_remove_host  -  tear down a Scsi_Host's SRP data structures
  * @shost:      Scsi Host that is torn down
  *
  * Removes all SRP remote ports for a given Scsi_Host.
@@ -297,7 +296,7 @@ static int srp_it_nexus_response(struct Scsi_Host *shost, u64 nexus, int result)
 }
 
 /**
- * srp_attach_transport  --  instantiate SRP transport template
+ * srp_attach_transport  -  instantiate SRP transport template
  * @ft:         SRP transport class function template
  */
 struct scsi_transport_template *
@@ -337,7 +336,7 @@ srp_attach_transport(struct srp_function_template *ft)
 EXPORT_SYMBOL_GPL(srp_attach_transport);
 
 /**
- * srp_release_transport  --  release SRP transport template instance
+ * srp_release_transport  -  release SRP transport template instance
  * @t:          transport template instance
  */
 void srp_release_transport(struct scsi_transport_template *t)
diff --git a/drivers/scsi/scsicam.c b/drivers/scsi/scsicam.c
index cd68a66c7bb3..3f21bc65e8c6 100644
--- a/drivers/scsi/scsicam.c
+++ b/drivers/scsi/scsicam.c
@@ -24,6 +24,14 @@
 static int setsize(unsigned long capacity, unsigned int *cyls, unsigned int *hds,
                    unsigned int *secs);
 
+/**
+ * scsi_bios_ptable - Read PC partition table out of first sector of device.
+ * @dev: from this device
+ *
+ * Description: Reads the first sector from the device and returns %0x42 bytes
+ *              starting at offset %0x1be.
+ * Returns: partition table in kmalloc(GFP_KERNEL) memory, or NULL on error.
+ */
 unsigned char *scsi_bios_ptable(struct block_device *dev)
 {
         unsigned char *res = kmalloc(66, GFP_KERNEL);
@@ -43,15 +51,17 @@ unsigned char *scsi_bios_ptable(struct block_device *dev)
 }
 EXPORT_SYMBOL(scsi_bios_ptable);
 
-/*
- * Function : int scsicam_bios_param (struct block_device *bdev, ector_t capacity, int *ip)
+/**
+ * scsicam_bios_param - Determine geometry of a disk in cylinders/heads/sectors.
+ * @bdev: which device
+ * @capacity: size of the disk in sectors
+ * @ip: return value: ip[0]=heads, ip[1]=sectors, ip[2]=cylinders
  *
- * Purpose : to determine the BIOS mapping used for a drive in a 
+ * Description : determine the BIOS mapping/geometry used for a drive in a
  *      SCSI-CAM system, storing the results in ip as required
  *      by the HDIO_GETGEO ioctl().
  *
  * Returns : -1 on failure, 0 on success.
- *
  */
 
 int scsicam_bios_param(struct block_device *bdev, sector_t capacity, int *ip)
@@ -98,15 +108,18 @@ int scsicam_bios_param(struct block_device *bdev, sector_t capacity, int *ip)
 }
 EXPORT_SYMBOL(scsicam_bios_param);
 
-/*
- * Function : static int scsi_partsize(unsigned char *buf, unsigned long 
- *     capacity,unsigned int *cyls, unsigned int *hds, unsigned int *secs);
+/**
+ * scsi_partsize - Parse cylinders/heads/sectors from PC partition table
+ * @buf: partition table, see scsi_bios_ptable()
+ * @capacity: size of the disk in sectors
+ * @cyls: put cylinders here
+ * @hds: put heads here
+ * @secs: put sectors here
  *
- * Purpose : to determine the BIOS mapping used to create the partition
+ * Description: determine the BIOS mapping/geometry used to create the partition
  *      table, storing the results in *cyls, *hds, and *secs 
  *
- * Returns : -1 on failure, 0 on success.
- *
+ * Returns: -1 on failure, 0 on success.
  */
 
 int scsi_partsize(unsigned char *buf, unsigned long capacity,
@@ -194,7 +207,7 @@ EXPORT_SYMBOL(scsi_partsize);
  *
  * WORKING                                                    X3T9.2
  * DRAFT                                                        792D
- *
+ * see http://www.t10.org/ftp/t10/drafts/cam/cam-r12b.pdf
  *
  *                                                        Revision 6
  *                                                         10-MAR-94
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index a69b155f39a2..24eba3118b5a 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -395,6 +395,15 @@ static int sd_prep_fn(struct request_queue *q, struct request *rq)
                 goto out;
         }
 
+        /*
+         * Some devices (some sdcards for one) don't like it if the
+         * last sector gets read in a larger then 1 sector read.
+         */
+        if (unlikely(sdp->last_sector_bug &&
+            rq->nr_sectors > sdp->sector_size / 512 &&
+            block + this_count == get_capacity(disk)))
+                this_count -= sdp->sector_size / 512;
+
         SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, "block=%llu\n",
                                         (unsigned long long)block));
 
@@ -736,6 +745,7 @@ static int sd_media_changed(struct gendisk *disk)
 {
         struct scsi_disk *sdkp = scsi_disk(disk);
         struct scsi_device *sdp = sdkp->device;
+        struct scsi_sense_hdr *sshdr = NULL;
         int retval;
 
         SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_media_changed\n"));
@@ -749,8 +759,11 @@ static int sd_media_changed(struct gendisk *disk)
          * can deal with it then.  It is only because of unrecoverable errors
          * that we would ever take a device offline in the first place.
          */
-        if (!scsi_device_online(sdp))
-                goto not_present;
+        if (!scsi_device_online(sdp)) {
+                set_media_not_present(sdkp);
+                retval = 1;
+                goto out;
+        }
 
         /*
          * Using TEST_UNIT_READY enables differentiation between drive with
@@ -762,8 +775,12 @@ static int sd_media_changed(struct gendisk *disk)
          * sd_revalidate() is called.
          */
         retval = -ENODEV;
-        if (scsi_block_when_processing_errors(sdp))
-                retval = scsi_test_unit_ready(sdp, SD_TIMEOUT, SD_MAX_RETRIES);
+
+        if (scsi_block_when_processing_errors(sdp)) {
+                sshdr  = kzalloc(sizeof(*sshdr), GFP_KERNEL);
+                retval = scsi_test_unit_ready(sdp, SD_TIMEOUT, SD_MAX_RETRIES,
+                                              sshdr);
+        }
 
         /*
          * Unable to test, unit probably not ready.   This usually
@@ -771,8 +788,13 @@ static int sd_media_changed(struct gendisk *disk)
          * and we will figure it out later once the drive is
          * available again.
          */
-        if (retval)
-                 goto not_present;
+        if (retval || (scsi_sense_valid(sshdr) &&
+                       /* 0x3a is medium not present */
+                       sshdr->asc == 0x3a)) {
+                set_media_not_present(sdkp);
+                retval = 1;
+                goto out;
+        }
 
         /*
          * For removable scsi disk we have to recognise the presence
@@ -783,12 +805,12 @@ static int sd_media_changed(struct gendisk *disk)
 
         retval = sdp->changed;
         sdp->changed = 0;
-
+out:
+        if (retval != sdkp->previous_state)
+                sdev_evt_send_simple(sdp, SDEV_EVT_MEDIA_CHANGE, GFP_KERNEL);
+        sdkp->previous_state = retval;
+        kfree(sshdr);
         return retval;
-
-not_present:
-        set_media_not_present(sdkp);
-        return 1;
 }
 
 static int sd_sync_cache(struct scsi_disk *sdkp)
diff --git a/drivers/scsi/seagate.c b/drivers/scsi/seagate.c
deleted file mode 100644
index b11324479b5b..000000000000
--- a/drivers/scsi/seagate.c
+++ /dev/null
@@ -1,1667 +0,0 @@
-/*
- *    seagate.c Copyright (C) 1992, 1993 Drew Eckhardt
- *      low level scsi driver for ST01/ST02, Future Domain TMC-885,
- *      TMC-950 by Drew Eckhardt <drew@colorado.edu>
- *
- *      Note : TMC-880 boards don't work because they have two bits in
- *              the status register flipped, I'll fix this "RSN"
- *      [why do I have strong feeling that above message is from 1993? :-)
- *              pavel@ucw.cz]
- *
- *      This card does all the I/O via memory mapped I/O, so there is no need
- *      to check or allocate a region of the I/O address space.
- */
-
-/* 1996 - to use new read{b,w,l}, write{b,w,l}, and phys_to_virt
- * macros, replaced assembler routines with C. There's probably a
- * performance hit, but I only have a cdrom and can't tell. Define
- * SEAGATE_USE_ASM if you want the old assembler code -- SJT
- *
- * 1998-jul-29 - created DPRINTK macros and made it work under 
- * linux 2.1.112, simplified some #defines etc. <pavel@ucw.cz>
- *
- * Aug 2000 - aeb - deleted seagate_st0x_biosparam(). It would try to
- * read the physical disk geometry, a bad mistake. Of course it doesn't
- * matter much what geometry one invents, but on large disks it
- * returned 256 (or more) heads, causing all kind of failures.
- * Of course this means that people might see a different geometry now,
- * so boot parameters may be necessary in some cases.
- */
-
-/*
- * Configuration :
- * To use without BIOS -DOVERRIDE=base_address -DCONTROLLER=FD or SEAGATE
- * -DIRQ will override the default of 5.
- * Note: You can now set these options from the kernel's "command line".
- * The syntax is:
- *
- *     st0x=ADDRESS,IRQ                (for a Seagate controller)
- * or:
- *     tmc8xx=ADDRESS,IRQ              (for a TMC-8xx or TMC-950 controller)
- * eg:
- *     tmc8xx=0xC8000,15
- *
- * will configure the driver for a TMC-8xx style controller using IRQ 15
- * with a base address of 0xC8000.
- *
- * -DARBITRATE 
- *      Will cause the host adapter to arbitrate for the
- *      bus for better SCSI-II compatibility, rather than just
- *      waiting for BUS FREE and then doing its thing.  Should
- *      let us do one command per Lun when I integrate my
- *      reorganization changes into the distribution sources.
- *
- * -DDEBUG=65535
- *      Will activate debug code.
- *
- * -DFAST or -DFAST32 
- *      Will use blind transfers where possible
- *
- * -DPARITY  
- *      This will enable parity.
- *
- * -DSEAGATE_USE_ASM
- *      Will use older seagate assembly code. should be (very small amount)
- *      Faster.
- *
- * -DSLOW_RATE=50
- *      Will allow compatibility with broken devices that don't
- *      handshake fast enough (ie, some CD ROM's) for the Seagate
- *      code.
- *
- *      50 is some number, It will let you specify a default
- *      transfer rate if handshaking isn't working correctly.
- *
- * -DOLDCNTDATASCEME  There is a new sceme to set the CONTROL
- *                    and DATA reigsters which complies more closely
- *                    with the SCSI2 standard. This hopefully eliminates
- *                    the need to swap the order these registers are
- *                    'messed' with. It makes the following two options
- *                    obsolete. To reenable the old sceme define this.
- *
- * The following to options are patches from the SCSI.HOWTO
- *
- * -DSWAPSTAT  This will swap the definitions for STAT_MSG and STAT_CD.
- *
- * -DSWAPCNTDATA  This will swap the order that seagate.c messes with
- *                the CONTROL an DATA registers.
- */
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/signal.h>
-#include <linux/string.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/blkdev.h>
-#include <linux/stat.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi.h>
-
-#include <scsi/scsi_dbg.h>
-#include <scsi/scsi_host.h>
-
-
-#ifdef DEBUG
-#define DPRINTK( when, msg... ) do { if ( (DEBUG & (when)) == (when) ) printk( msg ); } while (0)
-#else
-#define DPRINTK( when, msg... ) do { } while (0)
-#define DEBUG 0
-#endif
-#define DANY( msg... ) DPRINTK( 0xffff, msg );
-
-#ifndef IRQ
-#define IRQ 5
-#endif
-
-#ifdef FAST32
-#define FAST
-#endif
-
-#undef LINKED                   /* Linked commands are currently broken! */
-
-#if defined(OVERRIDE) && !defined(CONTROLLER)
-#error Please use -DCONTROLLER=SEAGATE or -DCONTROLLER=FD to override controller type
-#endif
-
-#ifndef __i386__
-#undef SEAGATE_USE_ASM
-#endif
-
-/*
-        Thanks to Brian Antoine for the example code in his Messy-Loss ST-01
-                driver, and Mitsugu Suzuki for information on the ST-01
-                SCSI host.
-*/
-
-/*
-        CONTROL defines
-*/
-
-#define CMD_RST                 0x01
-#define CMD_SEL                 0x02
-#define CMD_BSY                 0x04
-#define CMD_ATTN                0x08
-#define CMD_START_ARB           0x10
-#define CMD_EN_PARITY           0x20
-#define CMD_INTR                0x40
-#define CMD_DRVR_ENABLE         0x80
-
-/*
-        STATUS
-*/
-#ifdef SWAPSTAT
-#define STAT_MSG                0x08
-#define STAT_CD                 0x02
-#else
-#define STAT_MSG                0x02
-#define STAT_CD                 0x08
-#endif
-
-#define STAT_BSY                0x01
-#define STAT_IO                 0x04
-#define STAT_REQ                0x10
-#define STAT_SEL                0x20
-#define STAT_PARITY             0x40
-#define STAT_ARB_CMPL           0x80
-
-/* 
-        REQUESTS
-*/
-
-#define REQ_MASK (STAT_CD |  STAT_IO | STAT_MSG)
-#define REQ_DATAOUT 0
-#define REQ_DATAIN STAT_IO
-#define REQ_CMDOUT STAT_CD
-#define REQ_STATIN (STAT_CD | STAT_IO)
-#define REQ_MSGOUT (STAT_MSG | STAT_CD)
-#define REQ_MSGIN (STAT_MSG | STAT_CD | STAT_IO)
-
-extern volatile int seagate_st0x_timeout;
-
-#ifdef PARITY
-#define BASE_CMD CMD_EN_PARITY
-#else
-#define BASE_CMD  0
-#endif
-
-/*
-        Debugging code
-*/
-
-#define PHASE_BUS_FREE 1
-#define PHASE_ARBITRATION 2
-#define PHASE_SELECTION 4
-#define PHASE_DATAIN 8
-#define PHASE_DATAOUT 0x10
-#define PHASE_CMDOUT 0x20
-#define PHASE_MSGIN 0x40
-#define PHASE_MSGOUT 0x80
-#define PHASE_STATUSIN 0x100
-#define PHASE_ETC (PHASE_DATAIN | PHASE_DATAOUT | PHASE_CMDOUT | PHASE_MSGIN | PHASE_MSGOUT | PHASE_STATUSIN)
-#define PRINT_COMMAND 0x200
-#define PHASE_EXIT 0x400
-#define PHASE_RESELECT 0x800
-#define DEBUG_FAST 0x1000
-#define DEBUG_SG   0x2000
-#define DEBUG_LINKED    0x4000
-#define DEBUG_BORKEN    0x8000
-
-/* 
- *      Control options - these are timeouts specified in .01 seconds.
- */
-
-/* 30, 20 work */
-#define ST0X_BUS_FREE_DELAY 25
-#define ST0X_SELECTION_DELAY 25
-
-#define SEAGATE 1               /* these determine the type of the controller */
-#define FD      2
-
-#define ST0X_ID_STR     "Seagate ST-01/ST-02"
-#define FD_ID_STR       "TMC-8XX/TMC-950"
-
-static int internal_command (unsigned char target, unsigned char lun,
-                             const void *cmnd,
-                             void *buff, int bufflen, int reselect);
-
-static int incommand;           /* set if arbitration has finished
-                                   and we are in some command phase. */
-
-static unsigned int base_address = 0;   /* Where the card ROM starts, used to 
-                                           calculate memory mapped register
-                                           location.  */
-
-static void __iomem *st0x_cr_sr;        /* control register write, status
-                                           register read.  256 bytes in
-                                           length.
-                                           Read is status of SCSI BUS, as per 
-                                           STAT masks.  */
-
-static void __iomem *st0x_dr;   /* data register, read write 256
-                                   bytes in length.  */
-
-static volatile int st0x_aborted = 0;   /* set when we are aborted, ie by a
-                                           time out, etc.  */
-
-static unsigned char controller_type = 0;       /* set to SEAGATE for ST0x
-                                                   boards or FD for TMC-8xx
-                                                   boards */
-static int irq = IRQ;
-
-module_param(base_address, uint, 0);
-module_param(controller_type, byte, 0);
-module_param(irq, int, 0);
-MODULE_LICENSE("GPL");
-
-
-#define retcode(result) (((result) << 16) | (message << 8) | status)
-#define STATUS ((u8) readb(st0x_cr_sr))
-#define DATA ((u8) readb(st0x_dr))
-#define WRITE_CONTROL(d) { writeb((d), st0x_cr_sr); }
-#define WRITE_DATA(d) { writeb((d), st0x_dr); }
-
-#ifndef OVERRIDE
-static unsigned int seagate_bases[] = {
-        0xc8000, 0xca000, 0xcc000,
-        0xce000, 0xdc000, 0xde000
-};
-
-typedef struct {
-        const unsigned char *signature;
-        unsigned offset;
-        unsigned length;
-        unsigned char type;
-} Signature;
-
-static Signature __initdata signatures[] = {
-        {"ST01 v1.7  (C) Copyright 1987 Seagate", 15, 37, SEAGATE},
-        {"SCSI BIOS 2.00  (C) Copyright 1987 Seagate", 15, 40, SEAGATE},
-
-/*
- * The following two lines are NOT mistakes.  One detects ROM revision
- * 3.0.0, the other 3.2.  Since seagate has only one type of SCSI adapter,
- * and this is not going to change, the "SEAGATE" and "SCSI" together
- * are probably "good enough"
- */
-
-        {"SEAGATE SCSI BIOS ", 16, 17, SEAGATE},
-        {"SEAGATE SCSI BIOS ", 17, 17, SEAGATE},
-
-/*
- * However, future domain makes several incompatible SCSI boards, so specific
- * signatures must be used.
- */
-
-        {"FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89", 5, 46, FD},
-        {"FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89", 5, 46, FD},
-        {"FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90", 5, 47, FD},
-        {"FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90", 5, 47, FD},
-        {"FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90", 5, 46, FD},
-        {"FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92", 5, 44, FD},
-        {"IBM F1 BIOS V1.1004/30/92", 5, 25, FD},
-        {"FUTURE DOMAIN TMC-950", 5, 21, FD},
-        /* Added for 2.2.16 by Matthias_Heidbrink@b.maus.de */
-        {"IBM F1 V1.2009/22/93", 5, 25, FD},
-};
-
-#define NUM_SIGNATURES ARRAY_SIZE(signatures)
-#endif                          /* n OVERRIDE */
-
-/*
- * hostno stores the hostnumber, as told to us by the init routine.
- */
-
-static int hostno = -1;
-static void seagate_reconnect_intr (int, void *);
-static irqreturn_t do_seagate_reconnect_intr (int, void *);
-static int seagate_st0x_bus_reset(struct scsi_cmnd *);
-
-#ifdef FAST
-static int fast = 1;
-#else
-#define fast 0
-#endif
-
-#ifdef SLOW_RATE
-/*
- * Support for broken devices :
- * The Seagate board has a handshaking problem.  Namely, a lack
- * thereof for slow devices.  You can blast 600K/second through
- * it if you are polling for each byte, more if you do a blind
- * transfer.  In the first case, with a fast device, REQ will
- * transition high-low or high-low-high before your loop restarts
- * and you'll have no problems.  In the second case, the board
- * will insert wait states for up to 13.2 usecs for REQ to
- * transition low->high, and everything will work.
- *
- * However, there's nothing in the state machine that says
- * you *HAVE* to see a high-low-high set of transitions before
- * sending the next byte, and slow things like the Trantor CD ROMS
- * will break because of this.
- *
- * So, we need to slow things down, which isn't as simple as it
- * seems.  We can't slow things down period, because then people
- * who don't recompile their kernels will shoot me for ruining
- * their performance.  We need to do it on a case per case basis.
- *
- * The best for performance will be to, only for borken devices
- * (this is stored on a per-target basis in the scsi_devices array)
- *
- * Wait for a low->high transition before continuing with that
- * transfer.  If we timeout, continue anyways.  We don't need
- * a long timeout, because REQ should only be asserted until the
- * corresponding ACK is received and processed.
- *
- * Note that we can't use the system timer for this, because of
- * resolution, and we *really* can't use the timer chip since
- * gettimeofday() and the beeper routines use that.  So,
- * the best thing for us to do will be to calibrate a timing
- * loop in the initialization code using the timer chip before
- * gettimeofday() can screw with it.
- *
- * FIXME: this is broken (not borken :-). Empty loop costs less than
- * loop with ISA access in it! -- pavel@ucw.cz
- */
-
-static int borken_calibration = 0;
-
-static void __init borken_init (void)
-{
-        register int count = 0, start = jiffies + 1, stop = start + 25;
-
-        /* FIXME: There may be a better approach, this is a straight port for
-           now */
-        preempt_disable();
-        while (time_before (jiffies, start))
-                cpu_relax();
-        for (; time_before (jiffies, stop); ++count)
-                cpu_relax();
-        preempt_enable();
-
-/*
- * Ok, we now have a count for .25 seconds.  Convert to a
- * count per second and divide by transfer rate in K.  */
-
-        borken_calibration = (count * 4) / (SLOW_RATE * 1024);
-
-        if (borken_calibration < 1)
-                borken_calibration = 1;
-}
-
-static inline void borken_wait (void)
-{
-        register int count;
-
-        for (count = borken_calibration; count && (STATUS & STAT_REQ); --count)
-                cpu_relax();
-                
-#if (DEBUG & DEBUG_BORKEN)
-        if (count)
-                printk ("scsi%d : borken timeout\n", hostno);
-#endif
-}
-
-#endif                          /* def SLOW_RATE */
-
-/* These beasts only live on ISA, and ISA means 8MHz. Each ULOOP()
- * contains at least one ISA access, which takes more than 0.125
- * usec. So if we loop 8 times time in usec, we are safe.
- */
-
-#define ULOOP( i ) for (clock = i*8;;)
-#define TIMEOUT (!(clock--))
-
-static int __init seagate_st0x_detect (struct scsi_host_template * tpnt)
-{
-        struct Scsi_Host *instance;
-        int i, j;
-        unsigned long cr, dr;
-
-        tpnt->proc_name = "seagate";
-/*
- *      First, we try for the manual override.
- */
-        DANY ("Autodetecting ST0x / TMC-8xx\n");
-
-        if (hostno != -1) {
-                printk (KERN_ERR "seagate_st0x_detect() called twice?!\n");
-                return 0;
-        }
-
-/* If the user specified the controller type from the command line,
-   controller_type will be non-zero, so don't try to detect one */
-
-        if (!controller_type) {
-#ifdef OVERRIDE
-                base_address = OVERRIDE;
-                controller_type = CONTROLLER;
-
-                DANY ("Base address overridden to %x, controller type is %s\n",
-                      base_address,
-                      controller_type == SEAGATE ? "SEAGATE" : "FD");
-#else                           /* OVERRIDE */
-/*
- *      To detect this card, we simply look for the signature
- *      from the BIOS version notice in all the possible locations
- *      of the ROM's.  This has a nice side effect of not trashing
- *      any register locations that might be used by something else.
- *
- * XXX - note that we probably should be probing the address
- * space for the on-board RAM instead.
- */
-
-                for (i = 0; i < ARRAY_SIZE(seagate_bases); ++i) {
-                        void __iomem *p = ioremap(seagate_bases[i], 0x2000);
-                        if (!p)
-                                continue;
-                        for (j = 0; j < NUM_SIGNATURES; ++j)
-                                if (check_signature(p + signatures[j].offset, signatures[j].signature, signatures[j].length)) {
-                                        base_address = seagate_bases[i];
-                                        controller_type = signatures[j].type;
-                                        break;
-                                }
-                        iounmap(p);
-                }
-#endif                          /* OVERRIDE */
-        }
-        /* (! controller_type) */
-        tpnt->this_id = (controller_type == SEAGATE) ? 7 : 6;
-        tpnt->name = (controller_type == SEAGATE) ? ST0X_ID_STR : FD_ID_STR;
-
-        if (!base_address) {
-                printk(KERN_INFO "seagate: ST0x/TMC-8xx not detected.\n");
-                return 0;
-        }
-
-        cr = base_address + (controller_type == SEAGATE ? 0x1a00 : 0x1c00);
-        dr = cr + 0x200;
-        st0x_cr_sr = ioremap(cr, 0x100);
-        st0x_dr = ioremap(dr, 0x100);
-
-        DANY("%s detected. Base address = %x, cr = %x, dr = %x\n",
-              tpnt->name, base_address, cr, dr);
-
-        /*
-         *      At all times, we will use IRQ 5.  Should also check for IRQ3
-         *      if we lose our first interrupt.
-         */
-        instance = scsi_register (tpnt, 0);
-        if (instance == NULL)
-                return 0;
-
-        hostno = instance->host_no;
-        if (request_irq (irq, do_seagate_reconnect_intr, IRQF_DISABLED, (controller_type == SEAGATE) ? "seagate" : "tmc-8xx", instance)) {
-                printk(KERN_ERR "scsi%d : unable to allocate IRQ%d\n", hostno, irq);
-                return 0;
-        }
-        instance->irq = irq;
-        instance->io_port = base_address;
-#ifdef SLOW_RATE
-        printk(KERN_INFO "Calibrating borken timer... ");
-        borken_init();
-        printk(" %d cycles per transfer\n", borken_calibration);
-#endif
-        printk (KERN_INFO "This is one second... ");
-        {
-                int clock;
-                ULOOP (1 * 1000 * 1000) {
-                        STATUS;
-                        if (TIMEOUT)
-                                break;
-                }
-        }
-
-        printk ("done, %s options:"
-#ifdef ARBITRATE
-                " ARBITRATE"
-#endif
-#if DEBUG
-                " DEBUG"
-#endif
-#ifdef FAST
-                " FAST"
-#ifdef FAST32
-                "32"
-#endif
-#endif
-#ifdef LINKED
-                " LINKED"
-#endif
-#ifdef PARITY
-                " PARITY"
-#endif
-#ifdef SEAGATE_USE_ASM
-                " SEAGATE_USE_ASM"
-#endif
-#ifdef SLOW_RATE
-                " SLOW_RATE"
-#endif
-#ifdef SWAPSTAT
-                " SWAPSTAT"
-#endif
-#ifdef SWAPCNTDATA
-                " SWAPCNTDATA"
-#endif
-                "\n", tpnt->name);
-        return 1;
-}
-
-static const char *seagate_st0x_info (struct Scsi_Host *shpnt)
-{
-        static char buffer[64];
-
-        snprintf(buffer, 64, "%s at irq %d, address 0x%05X",
-                 (controller_type == SEAGATE) ? ST0X_ID_STR : FD_ID_STR,
-                 irq, base_address);
-        return buffer;
-}
-
-/*
- * These are our saved pointers for the outstanding command that is
- * waiting for a reconnect
- */
-
-static unsigned char current_target, current_lun;
-static unsigned char *current_cmnd, *current_data;
-static int current_nobuffs;
-static struct scatterlist *current_buffer;
-static int current_bufflen;
-
-#ifdef LINKED
-/*
- * linked_connected indicates whether or not we are currently connected to
- * linked_target, linked_lun and in an INFORMATION TRANSFER phase,
- * using linked commands.
- */
-
-static int linked_connected = 0;
-static unsigned char linked_target, linked_lun;
-#endif
-
-static void (*done_fn) (struct scsi_cmnd *) = NULL;
-static struct scsi_cmnd *SCint = NULL;
-
-/*
- * These control whether or not disconnect / reconnect will be attempted,
- * or are being attempted.
- */
-
-#define NO_RECONNECT    0
-#define RECONNECT_NOW   1
-#define CAN_RECONNECT   2
-
-/*
- * LINKED_RIGHT indicates that we are currently connected to the correct target
- * for this command, LINKED_WRONG indicates that we are connected to the wrong
- * target. Note that these imply CAN_RECONNECT and require defined(LINKED).
- */
-
-#define LINKED_RIGHT    3
-#define LINKED_WRONG    4
-
-/*
- * This determines if we are expecting to reconnect or not.
- */
-
-static int should_reconnect = 0;
-
-/*
- * The seagate_reconnect_intr routine is called when a target reselects the
- * host adapter.  This occurs on the interrupt triggered by the target
- * asserting SEL.
- */
-
-static irqreturn_t do_seagate_reconnect_intr(int irq, void *dev_id)
-{
-        unsigned long flags;
-        struct Scsi_Host *dev = dev_id;
-        
-        spin_lock_irqsave (dev->host_lock, flags);
-        seagate_reconnect_intr (irq, dev_id);
-        spin_unlock_irqrestore (dev->host_lock, flags);
-        return IRQ_HANDLED;
-}
-
-static void seagate_reconnect_intr (int irq, void *dev_id)
-{
-        int temp;
-        struct scsi_cmnd *SCtmp;
-
-        DPRINTK (PHASE_RESELECT, "scsi%d : seagate_reconnect_intr() called\n", hostno);
-
-        if (!should_reconnect)
-                printk(KERN_WARNING "scsi%d: unexpected interrupt.\n", hostno);
-        else {
-                should_reconnect = 0;
-
-                DPRINTK (PHASE_RESELECT, "scsi%d : internal_command(%d, %08x, %08x, RECONNECT_NOW\n", 
-                        hostno, current_target, current_data, current_bufflen);
-
-                temp = internal_command (current_target, current_lun, current_cmnd, current_data, current_bufflen, RECONNECT_NOW);
-
-                if (msg_byte(temp) != DISCONNECT) {
-                        if (done_fn) {
-                                DPRINTK(PHASE_RESELECT, "scsi%d : done_fn(%d,%08x)", hostno, hostno, temp);
-                                if (!SCint)
-                                        panic ("SCint == NULL in seagate");
-                                SCtmp = SCint;
-                                SCint = NULL;
-                                SCtmp->result = temp;
-                                done_fn(SCtmp);
-                        } else
-                                printk(KERN_ERR "done_fn() not defined.\n");
-                }
-        }
-}
-
-/*
- * The seagate_st0x_queue_command() function provides a queued interface
- * to the seagate SCSI driver.  Basically, it just passes control onto the
- * seagate_command() function, after fixing it so that the done_fn()
- * is set to the one passed to the function.  We have to be very careful,
- * because there are some commands on some devices that do not disconnect,
- * and if we simply call the done_fn when the command is done then another
- * command is started and queue_command is called again...  We end up
- * overflowing the kernel stack, and this tends not to be such a good idea.
- */
-
-static int recursion_depth = 0;
-
-static int seagate_st0x_queue_command(struct scsi_cmnd * SCpnt,
-                                      void (*done) (struct scsi_cmnd *))
-{
-        int result, reconnect;
-        struct scsi_cmnd *SCtmp;
-
-        DANY ("seagate: que_command");
-        done_fn = done;
-        current_target = SCpnt->device->id;
-        current_lun = SCpnt->device->lun;
-        current_cmnd = SCpnt->cmnd;
-        current_data = (unsigned char *) SCpnt->request_buffer;
-        current_bufflen = SCpnt->request_bufflen;
-        SCint = SCpnt;
-        if (recursion_depth)
-                return 1;
-        recursion_depth++;
-        do {
-#ifdef LINKED
-                /*
-                 * Set linked command bit in control field of SCSI command.
-                 */
-
-                current_cmnd[SCpnt->cmd_len] |= 0x01;
-                if (linked_connected) {
-                        DPRINTK (DEBUG_LINKED, "scsi%d : using linked commands, current I_T_L nexus is ", hostno);
-                        if (linked_target == current_target && linked_lun == current_lun) 
-                        {
-                                DPRINTK(DEBUG_LINKED, "correct\n");
-                                reconnect = LINKED_RIGHT;
-                        } else {
-                                DPRINTK(DEBUG_LINKED, "incorrect\n");
-                                reconnect = LINKED_WRONG;
-                        }
-                } else
-#endif                          /* LINKED */
-                        reconnect = CAN_RECONNECT;
-
-                result = internal_command(SCint->device->id, SCint->device->lun, SCint->cmnd,
-                                      SCint->request_buffer, SCint->request_bufflen, reconnect);
-                if (msg_byte(result) == DISCONNECT)
-                        break;
-                SCtmp = SCint;
-                SCint = NULL;
-                SCtmp->result = result;
-                done_fn(SCtmp);
-        }
-        while (SCint);
-        recursion_depth--;
-        return 0;
-}
-
-static int internal_command (unsigned char target, unsigned char lun,
-                  const void *cmnd, void *buff, int bufflen, int reselect)
-{
-        unsigned char *data = NULL;
-        struct scatterlist *buffer = NULL;
-        int clock, temp, nobuffs = 0, done = 0, len = 0;
-#if DEBUG
-        int transfered = 0, phase = 0, newphase;
-#endif
-        register unsigned char status_read;
-        unsigned char tmp_data, tmp_control, status = 0, message = 0;
-        unsigned transfersize = 0, underflow = 0;
-#ifdef SLOW_RATE
-        int borken = (int) SCint->device->borken;       /* Does the current target require
-                                                           Very Slow I/O ?  */
-#endif
-
-        incommand = 0;
-        st0x_aborted = 0;
-
-#if (DEBUG & PRINT_COMMAND)
-        printk("scsi%d : target = %d, command = ", hostno, target);
-        __scsi_print_command((unsigned char *) cmnd);
-#endif
-
-#if (DEBUG & PHASE_RESELECT)
-        switch (reselect) {
-        case RECONNECT_NOW:
-                printk("scsi%d : reconnecting\n", hostno);
-                break;
-#ifdef LINKED
-        case LINKED_RIGHT:
-                printk("scsi%d : connected, can reconnect\n", hostno);
-                break;
-        case LINKED_WRONG:
-                printk("scsi%d : connected to wrong target, can reconnect\n",
-                        hostno);
-                break;
-#endif
-        case CAN_RECONNECT:
-                printk("scsi%d : allowed to reconnect\n", hostno);
-                break;
-        default:
-                printk("scsi%d : not allowed to reconnect\n", hostno);
-        }
-#endif
-
-        if (target == (controller_type == SEAGATE ? 7 : 6))
-                return DID_BAD_TARGET;
-
-        /*
-         *      We work it differently depending on if this is is "the first time,"
-         *      or a reconnect.  If this is a reselect phase, then SEL will
-         *      be asserted, and we must skip selection / arbitration phases.
-         */
-
-        switch (reselect) {
-        case RECONNECT_NOW:
-                DPRINTK (PHASE_RESELECT, "scsi%d : phase RESELECT \n", hostno);
-                /*
-                 *      At this point, we should find the logical or of our ID
-                 *      and the original target's ID on the BUS, with BSY, SEL,
-                 *      and I/O signals asserted.
-                 *
-                 *      After ARBITRATION phase is completed, only SEL, BSY,
-                 *      and the target ID are asserted.  A valid initiator ID
-                 *      is not on the bus until IO is asserted, so we must wait
-                 *      for that.
-                 */
-                ULOOP (100 * 1000) {
-                        temp = STATUS;
-                        if ((temp & STAT_IO) && !(temp & STAT_BSY))
-                                break;
-                        if (TIMEOUT) {
-                                DPRINTK (PHASE_RESELECT, "scsi%d : RESELECT timed out while waiting for IO .\n", hostno);
-                                return (DID_BAD_INTR << 16);
-                        }
-                }
-
-                /*
-                 *      After I/O is asserted by the target, we can read our ID
-                 *      and its ID off of the BUS.
-                 */
-
-                if (!((temp = DATA) & (controller_type == SEAGATE ? 0x80 : 0x40))) {
-                        DPRINTK (PHASE_RESELECT, "scsi%d : detected reconnect request to different target.\n\tData bus = %d\n", hostno, temp);
-                        return (DID_BAD_INTR << 16);
-                }
-
-                if (!(temp & (1 << current_target))) {
-                        printk(KERN_WARNING "scsi%d : Unexpected reselect interrupt.  Data bus = %d\n", hostno, temp);
-                        return (DID_BAD_INTR << 16);
-                }
-
-                buffer = current_buffer;
-                cmnd = current_cmnd;    /* WDE add */
-                data = current_data;    /* WDE add */
-                len = current_bufflen;  /* WDE add */
-                nobuffs = current_nobuffs;
-
-                /*
-                 *      We have determined that we have been selected.  At this
-                 *      point, we must respond to the reselection by asserting
-                 *      BSY ourselves
-                 */
-
-#if 1
-                WRITE_CONTROL (BASE_CMD | CMD_DRVR_ENABLE | CMD_BSY);
-#else
-                WRITE_CONTROL (BASE_CMD | CMD_BSY);
-#endif
-
-                /*
-                 *      The target will drop SEL, and raise BSY, at which time
-                 *      we must drop BSY.
-                 */
-
-                ULOOP (100 * 1000) {
-                        if (!(STATUS & STAT_SEL))
-                                break;
-                        if (TIMEOUT) {
-                                WRITE_CONTROL (BASE_CMD | CMD_INTR);
-                                DPRINTK (PHASE_RESELECT, "scsi%d : RESELECT timed out while waiting for SEL.\n", hostno);
-                                return (DID_BAD_INTR << 16);
-                        }
-                }
-                WRITE_CONTROL (BASE_CMD);
-                /*
-                 *      At this point, we have connected with the target
-                 *      and can get on with our lives.
-                 */
-                break;
-        case CAN_RECONNECT:
-#ifdef LINKED
-                /*
-                 * This is a bletcherous hack, just as bad as the Unix #!
-                 * interpreter stuff. If it turns out we are using the wrong
-                 * I_T_L nexus, the easiest way to deal with it is to go into
-                 *  our INFORMATION TRANSFER PHASE code, send a ABORT
-                 * message on MESSAGE OUT phase, and then loop back to here.
-                 */
-connect_loop:
-#endif
-                DPRINTK (PHASE_BUS_FREE, "scsi%d : phase = BUS FREE \n", hostno);
-
-                /*
-                 *    BUS FREE PHASE
-                 *
-                 *      On entry, we make sure that the BUS is in a BUS FREE
-                 *      phase, by insuring that both BSY and SEL are low for
-                 *      at least one bus settle delay.  Several reads help
-                 *      eliminate wire glitch.
-                 */
-
-#ifndef ARBITRATE
-#error FIXME: this is broken: we may not use jiffies here - we are under cli(). It will hardlock.
-                clock = jiffies + ST0X_BUS_FREE_DELAY;
-
-                while (((STATUS | STATUS | STATUS) & (STAT_BSY | STAT_SEL)) && (!st0x_aborted) && time_before (jiffies, clock))
-                        cpu_relax();
-
-                if (time_after (jiffies, clock))
-                        return retcode (DID_BUS_BUSY);
-                else if (st0x_aborted)
-                        return retcode (st0x_aborted);
-#endif
-                DPRINTK (PHASE_SELECTION, "scsi%d : phase = SELECTION\n", hostno);
-
-                clock = jiffies + ST0X_SELECTION_DELAY;
-
-                /*
-                 * Arbitration/selection procedure :
-                 * 1.  Disable drivers
-                 * 2.  Write HOST adapter address bit
-                 * 3.  Set start arbitration.
-                 * 4.  We get either ARBITRATION COMPLETE or SELECT at this
-                 *     point.
-                 * 5.  OR our ID and targets on bus.
-                 * 6.  Enable SCSI drivers and asserted SEL and ATTN
-                 */
-
-#ifdef ARBITRATE
-                /* FIXME: verify host lock is always held here */
-                WRITE_CONTROL(0);
-                WRITE_DATA((controller_type == SEAGATE) ? 0x80 : 0x40);
-                WRITE_CONTROL(CMD_START_ARB);
-
-                ULOOP (ST0X_SELECTION_DELAY * 10000) {
-                        status_read = STATUS;
-                        if (status_read & STAT_ARB_CMPL)
-                                break;
-                        if (st0x_aborted)       /* FIXME: What? We are going to do something even after abort? */
-                                break;
-                        if (TIMEOUT || (status_read & STAT_SEL)) {
-                                printk(KERN_WARNING "scsi%d : arbitration lost or timeout.\n", hostno);
-                                WRITE_CONTROL (BASE_CMD);
-                                return retcode (DID_NO_CONNECT);
-                        }
-                }
-                DPRINTK (PHASE_SELECTION, "scsi%d : arbitration complete\n", hostno);
-#endif
-
-                /*
-                 *    When the SCSI device decides that we're gawking at it, 
-                 *    it will respond by asserting BUSY on the bus.
-                 *
-                 *    Note : the Seagate ST-01/02 product manual says that we
-                 *    should twiddle the DATA register before the control
-                 *    register. However, this does not work reliably so we do
-                 *    it the other way around.
-                 *
-                 *    Probably could be a problem with arbitration too, we
-                 *    really should try this with a SCSI protocol or logic 
-                 *    analyzer to see what is going on.
-                 */
-                tmp_data = (unsigned char) ((1 << target) | (controller_type == SEAGATE ? 0x80 : 0x40));
-                tmp_control = BASE_CMD | CMD_DRVR_ENABLE | CMD_SEL | (reselect ? CMD_ATTN : 0);
-
-                /* FIXME: verify host lock is always held here */
-#ifdef OLDCNTDATASCEME
-#ifdef SWAPCNTDATA
-                WRITE_CONTROL (tmp_control);
-                WRITE_DATA (tmp_data);
-#else
-                WRITE_DATA (tmp_data);
-                WRITE_CONTROL (tmp_control);
-#endif
-#else
-                tmp_control ^= CMD_BSY; /* This is guesswork. What used to be in driver    */
-                WRITE_CONTROL (tmp_control);    /* could never work: it sent data into control     */
-                WRITE_DATA (tmp_data);  /* register and control info into data. Hopefully  */
-                tmp_control ^= CMD_BSY; /* fixed, but order of first two may be wrong.     */
-                WRITE_CONTROL (tmp_control);    /* -- pavel@ucw.cz   */
-#endif
-
-                ULOOP (250 * 1000) {
-                        if (st0x_aborted) {
-                                /*
-                                 *      If we have been aborted, and we have a
-                                 *      command in progress, IE the target 
-                                 *      still has BSY asserted, then we will
-                                 *      reset the bus, and notify the midlevel
-                                 *      driver to expect sense.
-                                 */
-
-                                WRITE_CONTROL (BASE_CMD);
-                                if (STATUS & STAT_BSY) {
-                                        printk(KERN_WARNING "scsi%d : BST asserted after we've been aborted.\n", hostno);
-                                        seagate_st0x_bus_reset(NULL);
-                                        return retcode (DID_RESET);
-                                }
-                                return retcode (st0x_aborted);
-                        }
-                        if (STATUS & STAT_BSY)
-                                break;
-                        if (TIMEOUT) {
-                                DPRINTK (PHASE_SELECTION, "scsi%d : NO CONNECT with target %d, stat = %x \n", hostno, target, STATUS);
-                                return retcode (DID_NO_CONNECT);
-                        }
-                }
-
-                /* Establish current pointers.  Take into account scatter / gather */
-
-                if ((nobuffs = SCint->use_sg)) {
-#if (DEBUG & DEBUG_SG)
-                        {
-                                int i;
-                                printk("scsi%d : scatter gather requested, using %d buffers.\n", hostno, nobuffs);
-                                for (i = 0; i < nobuffs; ++i)
-                                        printk("scsi%d : buffer %d address = %p length = %d\n",
-                                             hostno, i,
-                                             sg_virt(&buffer[i]),
-                                             buffer[i].length);
-                        }
-#endif
-
-                        buffer = (struct scatterlist *) SCint->request_buffer;
-                        len = buffer->length;
-                        data = sg_virt(buffer);
-                } else {
-                        DPRINTK (DEBUG_SG, "scsi%d : scatter gather not requested.\n", hostno);
-                        buffer = NULL;
-                        len = SCint->request_bufflen;
-                        data = (unsigned char *) SCint->request_buffer;
-                }
-
-                DPRINTK (PHASE_DATAIN | PHASE_DATAOUT, "scsi%d : len = %d\n",
-                         hostno, len);
-
-                break;
-#ifdef LINKED
-        case LINKED_RIGHT:
-                break;
-        case LINKED_WRONG:
-                break;
-#endif
-        }                       /* end of switch(reselect) */
-
-        /*
-         *    There are several conditions under which we wish to send a message :
-         *      1.  When we are allowing disconnect / reconnect, and need to
-         *      establish the I_T_L nexus via an IDENTIFY with the DiscPriv bit
-         *      set.
-         *
-         *      2.  When we are doing linked commands, are have the wrong I_T_L
-         *      nexus established and want to send an ABORT message.
-         */
-
-        /* GCC does not like an ifdef inside a macro, so do it the hard way. */
-#ifdef LINKED
-        WRITE_CONTROL (BASE_CMD | CMD_DRVR_ENABLE | (((reselect == CAN_RECONNECT)|| (reselect == LINKED_WRONG))? CMD_ATTN : 0));
-#else
-        WRITE_CONTROL (BASE_CMD | CMD_DRVR_ENABLE | (((reselect == CAN_RECONNECT))? CMD_ATTN : 0));
-#endif
-
-        /*
-         *    INFORMATION TRANSFER PHASE
-         *
-         *      The nasty looking read / write inline assembler loops we use for
-         *      DATAIN and DATAOUT phases are approximately 4-5 times as fast as
-         *      the 'C' versions - since we're moving 1024 bytes of data, this
-         *      really adds up.
-         *
-         *      SJT: The nasty-looking assembler is gone, so it's slower.
-         *
-         */
-
-        DPRINTK (PHASE_ETC, "scsi%d : phase = INFORMATION TRANSFER\n", hostno);
-
-        incommand = 1;
-        transfersize = SCint->transfersize;
-        underflow = SCint->underflow;
-
-        /*
-         *      Now, we poll the device for status information,
-         *      and handle any requests it makes.  Note that since we are unsure
-         *      of how much data will be flowing across the system, etc and
-         *      cannot make reasonable timeouts, that we will instead have the
-         *      midlevel driver handle any timeouts that occur in this phase.
-         */
-
-        while (((status_read = STATUS) & STAT_BSY) && !st0x_aborted && !done) {
-#ifdef PARITY
-                if (status_read & STAT_PARITY) {
-                        printk(KERN_ERR "scsi%d : got parity error\n", hostno);
-                        st0x_aborted = DID_PARITY;
-                }
-#endif
-                if (status_read & STAT_REQ) {
-#if ((DEBUG & PHASE_ETC) == PHASE_ETC)
-                        if ((newphase = (status_read & REQ_MASK)) != phase) {
-                                phase = newphase;
-                                switch (phase) {
-                                case REQ_DATAOUT:
-                                        printk ("scsi%d : phase = DATA OUT\n", hostno);
-                                        break;
-                                case REQ_DATAIN:
-                                        printk ("scsi%d : phase = DATA IN\n", hostno);
-                                        break;
-                                case REQ_CMDOUT:
-                                        printk
-                                            ("scsi%d : phase = COMMAND OUT\n", hostno);
-                                        break;
-                                case REQ_STATIN:
-                                        printk ("scsi%d : phase = STATUS IN\n", hostno);
-                                        break;
-                                case REQ_MSGOUT:
-                                        printk
-                                            ("scsi%d : phase = MESSAGE OUT\n", hostno);
-                                        break;
-                                case REQ_MSGIN:
-                                        printk ("scsi%d : phase = MESSAGE IN\n", hostno);
-                                        break;
-                                default:
-                                        printk ("scsi%d : phase = UNKNOWN\n", hostno);
-                                        st0x_aborted = DID_ERROR;
-                                }
-                        }
-#endif
-                        switch (status_read & REQ_MASK) {
-                        case REQ_DATAOUT:
-                                /*
-                                 * If we are in fast mode, then we simply splat
-                                 * the data out in word-sized chunks as fast as
-                                 * we can.
-                                 */
-
-                                if (!len) {
-#if 0
-                                        printk("scsi%d: underflow to target %d lun %d \n", hostno, target, lun);
-                                        st0x_aborted = DID_ERROR;
-                                        fast = 0;
-#endif
-                                        break;
-                                }
-
-                                if (fast && transfersize
-                                    && !(len % transfersize)
-                                    && (len >= transfersize)
-#ifdef FAST32
-                                    && !(transfersize % 4)
-#endif
-                                    ) {
-                                        DPRINTK (DEBUG_FAST,
-                                                 "scsi%d : FAST transfer, underflow = %d, transfersize = %d\n"
-                                                 "         len = %d, data = %08x\n",
-                                                 hostno, SCint->underflow,
-                                                 SCint->transfersize, len,
-                                                 data);
-
-                        /* SJT: Start. Fast Write */
-#ifdef SEAGATE_USE_ASM
-                                        __asm__ ("cld\n\t"
-#ifdef FAST32
-                                                 "shr $2, %%ecx\n\t"
-                                                 "1:\t"
-                                                 "lodsl\n\t"
-                                                 "movl %%eax, (%%edi)\n\t"
-#else
-                                                 "1:\t"
-                                                 "lodsb\n\t"
-                                                 "movb %%al, (%%edi)\n\t"
-#endif
-                                                 "loop 1b;"
-                                      /* output */ :
-                                      /* input */ :"D" (st0x_dr),
-                                                 "S"
-                                                 (data),
-                                                 "c" (SCint->transfersize)
-/* clobbered */
-                                      :  "eax", "ecx",
-                                                 "esi");
-#else                           /* SEAGATE_USE_ASM */
-                                        memcpy_toio(st0x_dr, data, transfersize);
-#endif                          /* SEAGATE_USE_ASM */
-/* SJT: End */
-                                        len -= transfersize;
-                                        data += transfersize;
-                                        DPRINTK (DEBUG_FAST, "scsi%d : FAST transfer complete len = %d data = %08x\n", hostno, len, data);
-                                } else {
-                                        /*
-                                         *    We loop as long as we are in a 
-                                         *    data out phase, there is data to
-                                         *    send, and BSY is still active.
-                                         */
-
-/* SJT: Start. Slow Write. */
-#ifdef SEAGATE_USE_ASM
-
-                                        int __dummy_1, __dummy_2;
-
-/*
- *      We loop as long as we are in a data out phase, there is data to send, 
- *      and BSY is still active.
- */
-/* Local variables : len = ecx , data = esi, 
-                     st0x_cr_sr = ebx, st0x_dr =  edi
-*/
-                                        __asm__ (
-                                                        /* Test for any data here at all. */
-                                                        "orl %%ecx, %%ecx\n\t"
-                                                        "jz 2f\n\t" "cld\n\t"
-/*                    "movl st0x_cr_sr, %%ebx\n\t"  */
-/*                    "movl st0x_dr, %%edi\n\t"  */
-                                                        "1:\t"
-                                                        "movb (%%ebx), %%al\n\t"
-                                                        /* Test for BSY */
-                                                        "test $1, %%al\n\t"
-                                                        "jz 2f\n\t"
-                                                        /* Test for data out phase - STATUS & REQ_MASK should be 
-                                                           REQ_DATAOUT, which is 0. */
-                                                        "test $0xe, %%al\n\t"
-                                                        "jnz 2f\n\t"
-                                                        /* Test for REQ */
-                                                        "test $0x10, %%al\n\t"
-                                                        "jz 1b\n\t"
-                                                        "lodsb\n\t"
-                                                        "movb %%al, (%%edi)\n\t"
-                                                        "loop 1b\n\t" "2:\n"
-                                      /* output */ :"=S" (data), "=c" (len),
-                                                        "=b"
-                                                        (__dummy_1),
-                                                        "=D" (__dummy_2)
-/* input */
-                                      :         "0" (data), "1" (len),
-                                                        "2" (st0x_cr_sr),
-                                                        "3" (st0x_dr)
-/* clobbered */
-                                      :         "eax");
-#else                           /* SEAGATE_USE_ASM */
-                                        while (len) {
-                                                unsigned char stat;
-
-                                                stat = STATUS;
-                                                if (!(stat & STAT_BSY)
-                                                    || ((stat & REQ_MASK) !=
-                                                        REQ_DATAOUT))
-                                                        break;
-                                                if (stat & STAT_REQ) {
-                                                        WRITE_DATA (*data++);
-                                                        --len;
-                                                }
-                                        }
-#endif                          /* SEAGATE_USE_ASM */
-/* SJT: End. */
-                                }
-
-                                if (!len && nobuffs) {
-                                        --nobuffs;
-                                        ++buffer;
-                                        len = buffer->length;
-                                        data = sg_virt(buffer);
-                                        DPRINTK (DEBUG_SG,
-                                                 "scsi%d : next scatter-gather buffer len = %d address = %08x\n",
-                                                 hostno, len, data);
-                                }
-                                break;
-
-                        case REQ_DATAIN:
-#ifdef SLOW_RATE
-                                if (borken) {
-#if (DEBUG & (PHASE_DATAIN))
-                                        transfered += len;
-#endif
-                                        for (; len && (STATUS & (REQ_MASK | STAT_REQ)) == (REQ_DATAIN | STAT_REQ); --len) {
-                                                *data++ = DATA;
-                                                borken_wait();
-                                        }
-#if (DEBUG & (PHASE_DATAIN))
-                                        transfered -= len;
-#endif
-                                } else
-#endif
-
-                                        if (fast && transfersize
-                                            && !(len % transfersize)
-                                            && (len >= transfersize)
-#ifdef FAST32
-                                            && !(transfersize % 4)
-#endif
-                                    ) {
-                                        DPRINTK (DEBUG_FAST,
-                                                 "scsi%d : FAST transfer, underflow = %d, transfersize = %d\n"
-                                                 "         len = %d, data = %08x\n",
-                                                 hostno, SCint->underflow,
-                                                 SCint->transfersize, len,
-                                                 data);
-
-/* SJT: Start. Fast Read */
-#ifdef SEAGATE_USE_ASM
-                                        __asm__ ("cld\n\t"
-#ifdef FAST32
-                                                 "shr $2, %%ecx\n\t"
-                                                 "1:\t"
-                                                 "movl (%%esi), %%eax\n\t"
-                                                 "stosl\n\t"
-#else
-                                                 "1:\t"
-                                                 "movb (%%esi), %%al\n\t"
-                                                 "stosb\n\t"
-#endif
-                                                 "loop 1b\n\t"
-                                      /* output */ :
-                                      /* input */ :"S" (st0x_dr),
-                                                 "D"
-                                                 (data),
-                                                 "c" (SCint->transfersize)
-/* clobbered */
-                                      :  "eax", "ecx",
-                                                 "edi");
-#else                           /* SEAGATE_USE_ASM */
-                                        memcpy_fromio(data, st0x_dr, len);
-#endif                          /* SEAGATE_USE_ASM */
-/* SJT: End */
-                                        len -= transfersize;
-                                        data += transfersize;
-#if (DEBUG & PHASE_DATAIN)
-                                        printk ("scsi%d: transfered += %d\n", hostno, transfersize);
-                                        transfered += transfersize;
-#endif
-
-                                        DPRINTK (DEBUG_FAST, "scsi%d : FAST transfer complete len = %d data = %08x\n", hostno, len, data);
-                                } else {
-
-#if (DEBUG & PHASE_DATAIN)
-                                        printk ("scsi%d: transfered += %d\n", hostno, len);
-                                        transfered += len;      /* Assume we'll transfer it all, then
-                                                                   subtract what we *didn't* transfer */
-#endif
-
-/*
- *      We loop as long as we are in a data in phase, there is room to read,
- *      and BSY is still active
- */
-
-/* SJT: Start. */
-#ifdef SEAGATE_USE_ASM
-
-                                        int __dummy_3, __dummy_4;
-
-/* Dummy clobbering variables for the new gcc-2.95 */
-
-/*
- *      We loop as long as we are in a data in phase, there is room to read, 
- *      and BSY is still active
- */
-                                        /* Local variables : ecx = len, edi = data
-                                           esi = st0x_cr_sr, ebx = st0x_dr */
-                                        __asm__ (
-                                                        /* Test for room to read */
-                                                        "orl %%ecx, %%ecx\n\t"
-                                                        "jz 2f\n\t" "cld\n\t"
-/*                "movl st0x_cr_sr, %%esi\n\t"  */
-/*                "movl st0x_dr, %%ebx\n\t"  */
-                                                        "1:\t"
-                                                        "movb (%%esi), %%al\n\t"
-                                                        /* Test for BSY */
-                                                        "test $1, %%al\n\t"
-                                                        "jz 2f\n\t"
-                                                        /* Test for data in phase - STATUS & REQ_MASK should be REQ_DATAIN, 
-                                                           = STAT_IO, which is 4. */
-                                                        "movb $0xe, %%ah\n\t"
-                                                        "andb %%al, %%ah\n\t"
-                                                        "cmpb $0x04, %%ah\n\t"
-                                                        "jne 2f\n\t"
-                                                        /* Test for REQ */
-                                                        "test $0x10, %%al\n\t"
-                                                        "jz 1b\n\t"
-                                                        "movb (%%ebx), %%al\n\t"
-                                                        "stosb\n\t"
-                                                        "loop 1b\n\t" "2:\n"
-                                      /* output */ :"=D" (data), "=c" (len),
-                                                        "=S"
-                                                        (__dummy_3),
-                                                        "=b" (__dummy_4)
-/* input */
-                                      :         "0" (data), "1" (len),
-                                                        "2" (st0x_cr_sr),
-                                                        "3" (st0x_dr)
-/* clobbered */
-                                      :         "eax");
-#else                           /* SEAGATE_USE_ASM */
-                                        while (len) {
-                                                unsigned char stat;
-
-                                                stat = STATUS;
-                                                if (!(stat & STAT_BSY)
-                                                    || ((stat & REQ_MASK) !=
-                                                        REQ_DATAIN))
-                                                        break;
-                                                if (stat & STAT_REQ) {
-                                                        *data++ = DATA;
-                                                        --len;
-                                                }
-                                        }
-#endif                          /* SEAGATE_USE_ASM */
-/* SJT: End. */
-#if (DEBUG & PHASE_DATAIN)
-                                        printk ("scsi%d: transfered -= %d\n", hostno, len);
-                                        transfered -= len;      /* Since we assumed all of Len got  *
-                                                                   transfered, correct our mistake */
-#endif
-                                }
-
-                                if (!len && nobuffs) {
-                                        --nobuffs;
-                                        ++buffer;
-                                        len = buffer->length;
-                                        data = sg_virt(buffer);
-                                        DPRINTK (DEBUG_SG, "scsi%d : next scatter-gather buffer len = %d address = %08x\n", hostno, len, data);
-                                }
-                                break;
-
-                        case REQ_CMDOUT:
-                                while (((status_read = STATUS) & STAT_BSY) &&
-                                       ((status_read & REQ_MASK) == REQ_CMDOUT))
-                                        if (status_read & STAT_REQ) {
-                                                WRITE_DATA (*(const unsigned char *) cmnd);
-                                                cmnd = 1 + (const unsigned char *)cmnd;
-#ifdef SLOW_RATE
-                                                if (borken)
-                                                        borken_wait ();
-#endif
-                                        }
-                                break;
-
-                        case REQ_STATIN:
-                                status = DATA;
-                                break;
-
-                        case REQ_MSGOUT:
-                                /*
-                                 *      We can only have sent a MSG OUT if we
-                                 *      requested to do this by raising ATTN.
-                                 *      So, we must drop ATTN.
-                                 */
-                                WRITE_CONTROL (BASE_CMD | CMD_DRVR_ENABLE);
-                                /*
-                                 *      If we are reconnecting, then we must 
-                                 *      send an IDENTIFY message in response
-                                 *      to MSGOUT.
-                                 */
-                                switch (reselect) {
-                                case CAN_RECONNECT:
-                                        WRITE_DATA (IDENTIFY (1, lun));
-                                        DPRINTK (PHASE_RESELECT | PHASE_MSGOUT, "scsi%d : sent IDENTIFY message.\n", hostno);
-                                        break;
-#ifdef LINKED
-                                case LINKED_WRONG:
-                                        WRITE_DATA (ABORT);
-                                        linked_connected = 0;
-                                        reselect = CAN_RECONNECT;
-                                        goto connect_loop;
-                                        DPRINTK (PHASE_MSGOUT | DEBUG_LINKED, "scsi%d : sent ABORT message to cancel incorrect I_T_L nexus.\n", hostno);
-#endif                                  /* LINKED */
-                                        DPRINTK (DEBUG_LINKED, "correct\n");
-                                default:
-                                        WRITE_DATA (NOP);
-                                        printk("scsi%d : target %d requested MSGOUT, sent NOP message.\n", hostno, target);
-                                }
-                                break;
-
-                        case REQ_MSGIN:
-                                switch (message = DATA) {
-                                case DISCONNECT:
-                                        DANY("seagate: deciding to disconnect\n");
-                                        should_reconnect = 1;
-                                        current_data = data;    /* WDE add */
-                                        current_buffer = buffer;
-                                        current_bufflen = len;  /* WDE add */
-                                        current_nobuffs = nobuffs;
-#ifdef LINKED
-                                        linked_connected = 0;
-#endif
-                                        done = 1;
-                                        DPRINTK ((PHASE_RESELECT | PHASE_MSGIN), "scsi%d : disconnected.\n", hostno);
-                                        break;
-
-#ifdef LINKED
-                                case LINKED_CMD_COMPLETE:
-                                case LINKED_FLG_CMD_COMPLETE:
-#endif
-                                case COMMAND_COMPLETE:
-                                        /*
-                                         * Note : we should check for underflow here.
-                                         */
-                                        DPRINTK(PHASE_MSGIN, "scsi%d : command complete.\n", hostno);
-                                        done = 1;
-                                        break;
-                                case ABORT:
-                                        DPRINTK(PHASE_MSGIN, "scsi%d : abort message.\n", hostno);
-                                        done = 1;
-                                        break;
-                                case SAVE_POINTERS:
-                                        current_buffer = buffer;
-                                        current_bufflen = len;  /* WDE add */
-                                        current_data = data;    /* WDE mod */
-                                        current_nobuffs = nobuffs;
-                                        DPRINTK (PHASE_MSGIN, "scsi%d : pointers saved.\n", hostno);
-                                        break;
-                                case RESTORE_POINTERS:
-                                        buffer = current_buffer;
-                                        cmnd = current_cmnd;
-                                        data = current_data;    /* WDE mod */
-                                        len = current_bufflen;
-                                        nobuffs = current_nobuffs;
-                                        DPRINTK(PHASE_MSGIN, "scsi%d : pointers restored.\n", hostno);
-                                        break;
-                                default:
-
-                                        /*
-                                         *      IDENTIFY distinguishes itself
-                                         *      from the other messages by 
-                                         *      setting the high bit.
-                                         *
-                                         *      Note : we need to handle at 
-                                         *      least one outstanding command
-                                         *      per LUN, and need to hash the 
-                                         *      SCSI command for that I_T_L
-                                         *      nexus based on the known ID 
-                                         *      (at this point) and LUN.
-                                         */
-
-                                        if (message & 0x80) {
-                                                DPRINTK (PHASE_MSGIN, "scsi%d : IDENTIFY message received from id %d, lun %d.\n", hostno, target, message & 7);
-                                        } else {
-                                                /*
-                                                 *      We should go into a
-                                                 *      MESSAGE OUT phase, and
-                                                 *      send  a MESSAGE_REJECT
-                                                 *      if we run into a message 
-                                                 *      that we don't like.  The
-                                                 *      seagate driver needs 
-                                                 *      some serious 
-                                                 *      restructuring first
-                                                 *      though.
-                                                 */
-                                                DPRINTK (PHASE_MSGIN, "scsi%d : unknown message %d from target %d.\n", hostno, message, target);
-                                        }
-                                }
-                                break;
-                        default:
-                                printk(KERN_ERR "scsi%d : unknown phase.\n", hostno);
-                                st0x_aborted = DID_ERROR;
-                        }       /* end of switch (status_read &  REQ_MASK) */
-#ifdef SLOW_RATE
-                        /*
-                         * I really don't care to deal with borken devices in
-                         * each single byte transfer case (ie, message in,
-                         * message out, status), so I'll do the wait here if 
-                         * necessary.
-                         */
-                        if(borken)
-                                borken_wait();
-#endif
-
-                }               /* if(status_read & STAT_REQ) ends */
-        }                       /* while(((status_read = STATUS)...) ends */
-
-        DPRINTK(PHASE_DATAIN | PHASE_DATAOUT | PHASE_EXIT, "scsi%d : Transfered %d bytes\n", hostno, transfered);
-
-#if (DEBUG & PHASE_EXIT)
-#if 0                           /* Doesn't work for scatter/gather */
-        printk("Buffer : \n");
-        for(i = 0; i < 20; ++i)
-                printk("%02x  ", ((unsigned char *) data)[i]);  /* WDE mod */
-        printk("\n");
-#endif
-        printk("scsi%d : status = ", hostno);
-        scsi_print_status(status);
-        printk(" message = %02x\n", message);
-#endif
-
-        /* We shouldn't reach this until *after* BSY has been deasserted */
-
-#ifdef LINKED
-        else
-        {
-                /*
-                 * Fix the message byte so that unsuspecting high level drivers
-                 * don't puke when they see a LINKED COMMAND message in place of
-                 * the COMMAND COMPLETE they may be expecting.  Shouldn't be
-                 * necessary, but it's better to be on the safe side.
-                 *
-                 * A non LINKED* message byte will indicate that the command
-                 * completed, and we are now disconnected.
-                 */
-
-                switch (message) {
-                case LINKED_CMD_COMPLETE:
-                case LINKED_FLG_CMD_COMPLETE:
-                        message = COMMAND_COMPLETE;
-                        linked_target = current_target;
-                        linked_lun = current_lun;
-                        linked_connected = 1;
-                        DPRINTK (DEBUG_LINKED, "scsi%d : keeping I_T_L nexus established for linked command.\n", hostno);
-                        /* We also will need to adjust status to accommodate intermediate
-                           conditions. */
-                        if ((status == INTERMEDIATE_GOOD) || (status == INTERMEDIATE_C_GOOD))
-                                status = GOOD;
-                        break;
-                        /*
-                         * We should also handle what are "normal" termination
-                         * messages here (ABORT, BUS_DEVICE_RESET?, and
-                         * COMMAND_COMPLETE individually, and flake if things
-                         * aren't right.
-                         */
-                default:
-                        DPRINTK (DEBUG_LINKED, "scsi%d : closing I_T_L nexus.\n", hostno);
-                        linked_connected = 0;
-                }
-        }
-#endif  /* LINKED */
-
-        if (should_reconnect) {
-                DPRINTK (PHASE_RESELECT, "scsi%d : exiting seagate_st0x_queue_command() with reconnect enabled.\n", hostno);
-                WRITE_CONTROL (BASE_CMD | CMD_INTR);
-        } else
-                WRITE_CONTROL (BASE_CMD);
-
-        return retcode (st0x_aborted);
-}                               /* end of internal_command */
-
-static int seagate_st0x_abort(struct scsi_cmnd * SCpnt)
-{
-        st0x_aborted = DID_ABORT;
-        return SUCCESS;
-}
-
-#undef ULOOP
-#undef TIMEOUT
-
-/*
- * the seagate_st0x_reset function resets the SCSI bus 
- *
- * May be called with SCpnt = NULL
- */
-
-static int seagate_st0x_bus_reset(struct scsi_cmnd * SCpnt)
-{
-        /* No timeouts - this command is going to fail because it was reset. */
-        DANY ("scsi%d: Reseting bus... ", hostno);
-
-        /* assert  RESET signal on SCSI bus.  */
-        WRITE_CONTROL (BASE_CMD | CMD_RST);
-
-        mdelay (20);
-
-        WRITE_CONTROL (BASE_CMD);
-        st0x_aborted = DID_RESET;
-
-        DANY ("done.\n");
-        return SUCCESS;
-}
-
-static int seagate_st0x_release(struct Scsi_Host *shost)
-{
-        if (shost->irq)
-                free_irq(shost->irq, shost);
-        release_region(shost->io_port, shost->n_io_port);
-        return 0;
-}
-
-static struct scsi_host_template driver_template = {
-        .detect                 = seagate_st0x_detect,
-        .release                = seagate_st0x_release,
-        .info                   = seagate_st0x_info,
-        .queuecommand           = seagate_st0x_queue_command,
-        .eh_abort_handler       = seagate_st0x_abort,
-        .eh_bus_reset_handler   = seagate_st0x_bus_reset,
-        .can_queue              = 1,
-        .this_id                = 7,
-        .sg_tablesize           = SG_ALL,
-        .cmd_per_lun            = 1,
-        .use_clustering         = DISABLE_CLUSTERING,
-};
-#include "scsi_module.c"
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index f1871ea04045..17216b76efdc 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -602,8 +602,9 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
          * but is is possible that the app intended SG_DXFER_TO_DEV, because there
          * is a non-zero input_size, so emit a warning.
          */
-        if (hp->dxfer_direction == SG_DXFER_TO_FROM_DEV)
-                if (printk_ratelimit())
+        if (hp->dxfer_direction == SG_DXFER_TO_FROM_DEV) {
+                static char cmd[TASK_COMM_LEN];
+                if (strcmp(current->comm, cmd) && printk_ratelimit()) {
                         printk(KERN_WARNING
                                "sg_write: data in/out %d/%d bytes for SCSI command 0x%x--"
                                "guessing data in;\n" KERN_WARNING "   "
@@ -611,6 +612,9 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
                                old_hdr.reply_len - (int)SZ_SG_HEADER,
                                input_size, (unsigned int) cmnd[0],
                                current->comm);
+                        strcpy(cmd, current->comm);
+                }
+        }
         k = sg_common_write(sfp, srp, cmnd, sfp->timeout, blocking);
         return (k < 0) ? k : count;
 }
@@ -1418,7 +1422,6 @@ sg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
                 goto out;
         }
 
-        class_set_devdata(cl_dev, sdp);
         error = cdev_add(cdev, MKDEV(SCSI_GENERIC_MAJOR, sdp->index), 1);
         if (error)
                 goto cdev_add_err;
@@ -1431,11 +1434,14 @@ sg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
                                 MKDEV(SCSI_GENERIC_MAJOR, sdp->index),
                                 cl_dev->dev, "%s",
                                 disk->disk_name);
-                if (IS_ERR(sg_class_member))
-                        printk(KERN_WARNING "sg_add: "
-                                "class_device_create failed\n");
+                if (IS_ERR(sg_class_member)) {
+                        printk(KERN_ERR "sg_add: "
+                               "class_device_create failed\n");
+                        error = PTR_ERR(sg_class_member);
+                        goto cdev_add_err;
+                }
                 class_set_devdata(sg_class_member, sdp);
-                error = sysfs_create_link(&scsidp->sdev_gendev.kobj, 
+                error = sysfs_create_link(&scsidp->sdev_gendev.kobj,
                                           &sg_class_member->kobj, "generic");
                 if (error)
                         printk(KERN_ERR "sg_add: unable to make symlink "
@@ -1447,6 +1453,8 @@ sg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
                     "Attached scsi generic sg%d type %d\n", sdp->index,
                     scsidp->type);
 
+        class_set_devdata(cl_dev, sdp);
+
         return 0;
 
 cdev_add_err:
@@ -2521,7 +2529,7 @@ sg_idr_max_id(int id, void *p, void *data)
 static int
 sg_last_dev(void)
 {
-        int k = 0;
+        int k = -1;
         unsigned long iflags;
 
         read_lock_irqsave(&sg_index_lock, iflags);
diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c
index eef82758d047..d4ebe8c67ba9 100644
--- a/drivers/scsi/sgiwd93.c
+++ b/drivers/scsi/sgiwd93.c
@@ -159,6 +159,7 @@ void sgiwd93_reset(unsigned long base)
         udelay(50);
         hregs->ctrl = 0;
 }
+EXPORT_SYMBOL_GPL(sgiwd93_reset);
 
 static inline void init_hpc_chain(struct hpc_data *hd)
 {
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index c61999031141..1fcee16fa36d 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -67,8 +67,6 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_WORM);
 
 #define SR_DISKS        256
 
-#define MAX_RETRIES     3
-#define SR_TIMEOUT      (30 * HZ)
 #define SR_CAPABILITIES \
         (CDC_CLOSE_TRAY|CDC_OPEN_TRAY|CDC_LOCK|CDC_SELECT_SPEED| \
          CDC_SELECT_DISC|CDC_MULTI_SESSION|CDC_MCN|CDC_MEDIA_CHANGED| \
@@ -179,21 +177,28 @@ static int sr_media_change(struct cdrom_device_info *cdi, int slot)
 {
         struct scsi_cd *cd = cdi->handle;
         int retval;
+        struct scsi_sense_hdr *sshdr;
 
         if (CDSL_CURRENT != slot) {
                 /* no changer support */
                 return -EINVAL;
         }
 
-        retval = scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES);
-        if (retval) {
-                /* Unable to test, unit probably not ready.  This usually
-                 * means there is no disc in the drive.  Mark as changed,
-                 * and we will figure it out later once the drive is
-                 * available again.  */
+        sshdr =  kzalloc(sizeof(*sshdr), GFP_KERNEL);
+        retval = scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES,
+                                      sshdr);
+        if (retval || (scsi_sense_valid(sshdr) &&
+                       /* 0x3a is medium not present */
+                       sshdr->asc == 0x3a)) {
+                /* Media not present or unable to test, unit probably not
+                 * ready. This usually means there is no disc in the drive.
+                 * Mark as changed, and we will figure it out later once
+                 * the drive is available again.
+                 */
                 cd->device->changed = 1;
-                return 1;       /* This will force a flush, if called from
-                                 * check_disk_change */
+                /* This will force a flush, if called from check_disk_change */
+                retval = 1;
+                goto out;
         };
 
         retval = cd->device->changed;
@@ -203,9 +208,17 @@ static int sr_media_change(struct cdrom_device_info *cdi, int slot)
         if (retval) {
                 /* check multisession offset etc */
                 sr_cd_check(cdi);
-
                 get_sectorsize(cd);
         }
+
+out:
+        /* Notify userspace, that media has changed. */
+        if (retval != cd->previous_state)
+                sdev_evt_send_simple(cd->device, SDEV_EVT_MEDIA_CHANGE,
+                                     GFP_KERNEL);
+        cd->previous_state = retval;
+        kfree(sshdr);
+
         return retval;
 }
  
diff --git a/drivers/scsi/sr.h b/drivers/scsi/sr.h
index d65de9621b27..81fbc0b78a52 100644
--- a/drivers/scsi/sr.h
+++ b/drivers/scsi/sr.h
@@ -20,6 +20,9 @@
 #include <linux/genhd.h>
 #include <linux/kref.h>
 
+#define MAX_RETRIES     3
+#define SR_TIMEOUT      (30 * HZ)
+
 struct scsi_device;
 
 /* The CDROM is fairly slow, so we need a little extra time */
@@ -37,6 +40,7 @@ typedef struct scsi_cd {
         unsigned xa_flag:1;     /* CD has XA sectors ? */
         unsigned readcd_known:1;        /* drive supports READ_CD (0xbe) */
         unsigned readcd_cdda:1; /* reading audio data using READ_CD */
+        unsigned previous_state:1;      /* media has changed */
         struct cdrom_device_info cdi;
         /* We hold gendisk and scsi_device references on probe and use
          * the refs on this kref to decide when to release them */
diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c
index e1589f91706a..d5cebff1d646 100644
--- a/drivers/scsi/sr_ioctl.c
+++ b/drivers/scsi/sr_ioctl.c
@@ -275,18 +275,6 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc)
 /* ---------------------------------------------------------------------- */
 /* interface to cdrom.c                                                   */
 
-static int test_unit_ready(Scsi_CD *cd)
-{
-        struct packet_command cgc;
-
-        memset(&cgc, 0, sizeof(struct packet_command));
-        cgc.cmd[0] = GPCMD_TEST_UNIT_READY;
-        cgc.quiet = 1;
-        cgc.data_direction = DMA_NONE;
-        cgc.timeout = IOCTL_TIMEOUT;
-        return sr_do_ioctl(cd, &cgc);
-}
-
 int sr_tray_move(struct cdrom_device_info *cdi, int pos)
 {
         Scsi_CD *cd = cdi->handle;
@@ -310,14 +298,46 @@ int sr_lock_door(struct cdrom_device_info *cdi, int lock)
 
 int sr_drive_status(struct cdrom_device_info *cdi, int slot)
 {
+        struct scsi_cd *cd = cdi->handle;
+        struct scsi_sense_hdr sshdr;
+        struct media_event_desc med;
+
         if (CDSL_CURRENT != slot) {
                 /* we have no changer support */
                 return -EINVAL;
         }
-        if (0 == test_unit_ready(cdi->handle))
+        if (0 == scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES,
+                                      &sshdr))
                 return CDS_DISC_OK;
 
-        return CDS_TRAY_OPEN;
+        if (!cdrom_get_media_event(cdi, &med)) {
+                if (med.media_present)
+                        return CDS_DISC_OK;
+                else if (med.door_open)
+                        return CDS_TRAY_OPEN;
+                else
+                        return CDS_NO_DISC;
+        }
+
+        /*
+         * 0x04 is format in progress .. but there must be a disc present!
+         */
+        if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04)
+                return CDS_DISC_OK;
+
+        /*
+         * If not using Mt Fuji extended media tray reports,
+         * just return TRAY_OPEN since ATAPI doesn't provide
+         * any other way to detect this...
+         */
+        if (scsi_sense_valid(&sshdr) &&
+            /* 0x3a is medium not present */
+            sshdr.asc == 0x3a)
+                return CDS_NO_DISC;
+        else
+                return CDS_TRAY_OPEN;
+
+        return CDS_DRIVE_NOT_READY;
 }
 
 int sr_disk_status(struct cdrom_device_info *cdi)
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 328c47c6aeb1..71952703125a 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -9,7 +9,7 @@
    Steve Hirsch, Andreas Koppenh"ofer, Michael Leodolter, Eyal Lebedinsky,
    Michael Schaefer, J"org Weule, and Eric Youngdale.
 
-   Copyright 1992 - 2007 Kai Makisara
+   Copyright 1992 - 2008 Kai Makisara
    email Kai.Makisara@kolumbus.fi
 
    Some small formal changes - aeb, 950809
@@ -17,7 +17,7 @@
    Last modified: 18-JAN-1998 Richard Gooch <rgooch@atnf.csiro.au> Devfs support
  */
 
-static const char *verstr = "20070203";
+static const char *verstr = "20080117";
 
 #include <linux/module.h>
 
@@ -3214,8 +3214,7 @@ static int partition_tape(struct scsi_tape *STp, int size)
 
 
 /* The ioctl command */
-static int st_ioctl(struct inode *inode, struct file *file,
-                    unsigned int cmd_in, unsigned long arg)
+static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
 {
         int i, cmd_nr, cmd_type, bt;
         int retval = 0;
@@ -3870,7 +3869,7 @@ static const struct file_operations st_fops =
         .owner =        THIS_MODULE,
         .read =         st_read,
         .write =        st_write,
-        .ioctl =        st_ioctl,
+        .unlocked_ioctl = st_ioctl,
 #ifdef CONFIG_COMPAT
         .compat_ioctl = st_compat_ioctl,
 #endif
diff --git a/drivers/scsi/sun3_NCR5380.c b/drivers/scsi/sun3_NCR5380.c
index 2dcde373b20e..bcaba86060ab 100644
--- a/drivers/scsi/sun3_NCR5380.c
+++ b/drivers/scsi/sun3_NCR5380.c
@@ -515,9 +515,9 @@ static __inline__ void initialize_SCp(struct scsi_cmnd *cmd)
      * various queues are valid.
      */
 
-    if (cmd->use_sg) {
-        cmd->SCp.buffer = (struct scatterlist *) cmd->request_buffer;
-        cmd->SCp.buffers_residual = cmd->use_sg - 1;
+    if (scsi_bufflen(cmd)) {
+        cmd->SCp.buffer = scsi_sglist(cmd);
+        cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
         cmd->SCp.ptr = (char *) SGADDR(cmd->SCp.buffer);
         cmd->SCp.this_residual = cmd->SCp.buffer->length;
 
@@ -528,8 +528,8 @@ static __inline__ void initialize_SCp(struct scsi_cmnd *cmd)
     } else {
         cmd->SCp.buffer = NULL;
         cmd->SCp.buffers_residual = 0;
-        cmd->SCp.ptr = (char *) cmd->request_buffer;
-        cmd->SCp.this_residual = cmd->request_bufflen;
+        cmd->SCp.ptr = NULL;
+        cmd->SCp.this_residual = 0;
     }
     
 }
@@ -935,7 +935,7 @@ static int NCR5380_queue_command(struct scsi_cmnd *cmd,
     }
 # endif
 # ifdef NCR5380_STAT_LIMIT
-    if (cmd->request_bufflen > NCR5380_STAT_LIMIT)
+    if (scsi_bufflen(cmd) > NCR5380_STAT_LIMIT)
 # endif
         switch (cmd->cmnd[0])
         {
@@ -943,14 +943,14 @@ static int NCR5380_queue_command(struct scsi_cmnd *cmd,
             case WRITE_6:
             case WRITE_10:
                 hostdata->time_write[cmd->device->id] -= (jiffies - hostdata->timebase);
-                hostdata->bytes_write[cmd->device->id] += cmd->request_bufflen;
+                hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);
                 hostdata->pendingw++;
                 break;
             case READ:
             case READ_6:
             case READ_10:
                 hostdata->time_read[cmd->device->id] -= (jiffies - hostdata->timebase);
-                hostdata->bytes_read[cmd->device->id] += cmd->request_bufflen;
+                hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);
                 hostdata->pendingr++;
                 break;
         }
@@ -1345,7 +1345,7 @@ static void collect_stats(struct NCR5380_hostdata *hostdata,
                           struct scsi_cmnd *cmd)
 {
 # ifdef NCR5380_STAT_LIMIT
-    if (cmd->request_bufflen > NCR5380_STAT_LIMIT)
+    if (scsi_bufflen(cmd) > NCR5380_STAT_LIMIT)
 # endif
         switch (cmd->cmnd[0])
         {
@@ -1353,14 +1353,14 @@ static void collect_stats(struct NCR5380_hostdata *hostdata,
             case WRITE_6:
             case WRITE_10:
                 hostdata->time_write[cmd->device->id] += (jiffies - hostdata->timebase);
-                /*hostdata->bytes_write[cmd->device->id] += cmd->request_bufflen;*/
+                /*hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);*/
                 hostdata->pendingw--;
                 break;
             case READ:
             case READ_6:
             case READ_10:
                 hostdata->time_read[cmd->device->id] += (jiffies - hostdata->timebase);
-                /*hostdata->bytes_read[cmd->device->id] += cmd->request_bufflen;*/
+                /*hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);*/
                 hostdata->pendingr--;
                 break;
         }
@@ -1863,7 +1863,7 @@ static int do_abort (struct Scsi_Host *host)
      * the target sees, so we just handshake.
      */
     
-    while (!(tmp = NCR5380_read(STATUS_REG)) & SR_REQ);
+    while (!((tmp = NCR5380_read(STATUS_REG)) & SR_REQ));
 
     NCR5380_write(TARGET_COMMAND_REG, PHASE_SR_TO_TCR(tmp));
 
diff --git a/drivers/scsi/sym53c416.c b/drivers/scsi/sym53c416.c
index 90cee94d9522..1f6fd1680335 100644
--- a/drivers/scsi/sym53c416.c
+++ b/drivers/scsi/sym53c416.c
@@ -328,27 +328,13 @@ static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer,
 static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id)
 {
         struct Scsi_Host *dev = dev_id;
-        int base = 0;
+        int base = dev->io_port;
         int i;
         unsigned long flags = 0;
         unsigned char status_reg, pio_int_reg, int_reg;
         struct scatterlist *sg;
         unsigned int tot_trans = 0;
 
-        /* We search the base address of the host adapter which caused the interrupt */
-        /* FIXME: should pass dev_id sensibly as hosts[i] */
-        for(i = 0; i < host_index && !base; i++)
-                if(irq == hosts[i].irq)
-                        base = hosts[i].base;
-        /* If no adapter found, we cannot handle the interrupt. Leave a message */
-        /* and continue. This should never happen...                            */
-        if(!base)
-        {
-                printk(KERN_ERR "sym53c416: No host adapter defined for interrupt %d\n", irq);
-                return IRQ_NONE;
-        }
-        /* Now we have the base address and we can start handling the interrupt */
-
         spin_lock_irqsave(dev->host_lock,flags);
         status_reg = inb(base + STATUS_REG);
         pio_int_reg = inb(base + PIO_INT_REG);
diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c
index 9e0908d1981a..21e926dcdab0 100644
--- a/drivers/scsi/sym53c8xx_2/sym_glue.c
+++ b/drivers/scsi/sym53c8xx_2/sym_glue.c
@@ -207,10 +207,9 @@ void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid)
                         /*
                          *  Bounce back the sense data to user.
                          */
-                        memset(&cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+                        memset(&cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
                         memcpy(cmd->sense_buffer, cp->sns_bbuf,
-                              min(sizeof(cmd->sense_buffer),
-                                  (size_t)SYM_SNS_BBUF_LEN));
+                               min(SCSI_SENSE_BUFFERSIZE, SYM_SNS_BBUF_LEN));
 #if 0
                         /*
                          *  If the device reports a UNIT ATTENTION condition 
@@ -609,22 +608,24 @@ static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
          */
 #define WAIT_FOR_PCI_RECOVERY   35
         if (pci_channel_offline(pdev)) {
-                struct completion *io_reset;
                 int finished_reset = 0;
                 init_completion(&eh_done);
                 spin_lock_irq(shost->host_lock);
                 /* Make sure we didn't race */
                 if (pci_channel_offline(pdev)) {
-                        if (!sym_data->io_reset)
-                                sym_data->io_reset = &eh_done;
-                        io_reset = sym_data->io_reset;
+                        BUG_ON(sym_data->io_reset);
+                        sym_data->io_reset = &eh_done;
                 } else {
                         finished_reset = 1;
                 }
                 spin_unlock_irq(shost->host_lock);
                 if (!finished_reset)
-                        finished_reset = wait_for_completion_timeout(io_reset,
+                        finished_reset = wait_for_completion_timeout
+                                                (sym_data->io_reset,
                                                 WAIT_FOR_PCI_RECOVERY*HZ);
+                spin_lock_irq(shost->host_lock);
+                sym_data->io_reset = NULL;
+                spin_unlock_irq(shost->host_lock);
                 if (!finished_reset)
                         return SCSI_FAILED;
         }
@@ -1744,7 +1745,7 @@ static int __devinit sym2_probe(struct pci_dev *pdev,
         return -ENODEV;
 }
 
-static void __devexit sym2_remove(struct pci_dev *pdev)
+static void sym2_remove(struct pci_dev *pdev)
 {
         struct Scsi_Host *shost = pci_get_drvdata(pdev);
 
@@ -1879,7 +1880,6 @@ static void sym2_io_resume(struct pci_dev *pdev)
         spin_lock_irq(shost->host_lock);
         if (sym_data->io_reset)
                 complete_all(sym_data->io_reset);
-        sym_data->io_reset = NULL;
         spin_unlock_irq(shost->host_lock);
 }
 
@@ -2056,7 +2056,7 @@ static struct pci_driver sym2_driver = {
         .name           = NAME53C8XX,
         .id_table       = sym2_id_table,
         .probe          = sym2_probe,
-        .remove         = __devexit_p(sym2_remove),
+        .remove         = sym2_remove,
         .err_handler    = &sym2_err_handler,
 };
 
diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c
index 44193049c4ae..5b04ddfed26c 100644
--- a/drivers/scsi/tmscsim.c
+++ b/drivers/scsi/tmscsim.c
@@ -444,7 +444,7 @@ static int dc390_pci_map (struct dc390_srb* pSRB)
 
         /* Map sense buffer */
         if (pSRB->SRBFlag & AUTO_REQSENSE) {
-                pSRB->pSegmentList      = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
+                pSRB->pSegmentList      = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
                 pSRB->SGcount           = pci_map_sg(pdev, pSRB->pSegmentList, 1,
                                                      DMA_FROM_DEVICE);
                 cmdp->saved_dma_handle  = sg_dma_address(pSRB->pSegmentList);
@@ -599,7 +599,7 @@ dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_sr
             DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
             DC390_write8 (ScsiFifo, 0);
             DC390_write8 (ScsiFifo, 0);
-            DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
+            DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE);
             DC390_write8 (ScsiFifo, 0);
             DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
           }
@@ -1389,7 +1389,7 @@ dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus
         DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
         DC390_write8 (ScsiFifo, 0);
         DC390_write8 (ScsiFifo, 0);
-        DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
+        DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE);
         DC390_write8 (ScsiFifo, 0);
         DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
     }
diff --git a/drivers/scsi/u14-34f.c b/drivers/scsi/u14-34f.c
index 7edd6ceb13b2..4bc5407f9695 100644
--- a/drivers/scsi/u14-34f.c
+++ b/drivers/scsi/u14-34f.c
@@ -1121,9 +1121,9 @@ static void map_dma(unsigned int i, unsigned int j) {
 
    if (SCpnt->sense_buffer)
       cpp->sense_addr = H2DEV(pci_map_single(HD(j)->pdev, SCpnt->sense_buffer,
-                           sizeof SCpnt->sense_buffer, PCI_DMA_FROMDEVICE));
+                           SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE));
 
-   cpp->sense_len = sizeof SCpnt->sense_buffer;
+   cpp->sense_len = SCSI_SENSE_BUFFERSIZE;
 
    if (scsi_bufflen(SCpnt)) {
            count = scsi_dma_map(SCpnt);
diff --git a/drivers/scsi/ultrastor.c b/drivers/scsi/ultrastor.c
index 6d1f0edd7985..75eca6b22db5 100644
--- a/drivers/scsi/ultrastor.c
+++ b/drivers/scsi/ultrastor.c
@@ -298,9 +298,16 @@ static inline int find_and_clear_bit_16(unsigned long *field)
 {
   int rv;
 
-  if (*field == 0) panic("No free mscp");
-  asm("xorl %0,%0\n0:\tbsfw %1,%w0\n\tbtr %0,%1\n\tjnc 0b"
-      : "=&r" (rv), "=m" (*field) : "1" (*field));
+  if (*field == 0)
+    panic("No free mscp");
+
+  asm volatile (
+        "xorl %0,%0\n\t"
+        "0: bsfw %1,%w0\n\t"
+        "btr %0,%1\n\t"
+        "jnc 0b"
+        : "=&r" (rv), "=m" (*field) :);
+
   return rv;
 }
 
@@ -741,7 +748,7 @@ static int ultrastor_queuecommand(struct scsi_cmnd *SCpnt,
     }
     my_mscp->command_link = 0;          /*???*/
     my_mscp->scsi_command_link_id = 0;  /*???*/
-    my_mscp->length_of_sense_byte = sizeof SCpnt->sense_buffer;
+    my_mscp->length_of_sense_byte = SCSI_SENSE_BUFFERSIZE;
     my_mscp->length_of_scsi_cdbs = SCpnt->cmd_len;
     memcpy(my_mscp->scsi_cdbs, SCpnt->cmnd, my_mscp->length_of_scsi_cdbs);
     my_mscp->adapter_status = 0;
diff --git a/drivers/scsi/wd33c93.c b/drivers/scsi/wd33c93.c
index fdbb92d1f722..f286c37da7e0 100644
--- a/drivers/scsi/wd33c93.c
+++ b/drivers/scsi/wd33c93.c
@@ -407,16 +407,16 @@ wd33c93_queuecommand(struct scsi_cmnd *cmd,
  *  - SCp.phase records this command's SRCID_ER bit setting
  */
 
-        if (cmd->use_sg) {
-                cmd->SCp.buffer = (struct scatterlist *) cmd->request_buffer;
-                cmd->SCp.buffers_residual = cmd->use_sg - 1;
+        if (scsi_bufflen(cmd)) {
+                cmd->SCp.buffer = scsi_sglist(cmd);
+                cmd->SCp.buffers_residual = scsi_sg_count(cmd) - 1;
                 cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
                 cmd->SCp.this_residual = cmd->SCp.buffer->length;
         } else {
                 cmd->SCp.buffer = NULL;
                 cmd->SCp.buffers_residual = 0;
-                cmd->SCp.ptr = (char *) cmd->request_buffer;
-                cmd->SCp.this_residual = cmd->request_bufflen;
+                cmd->SCp.ptr = NULL;
+                cmd->SCp.this_residual = 0;
         }
 
 /* WD docs state that at the conclusion of a "LEVEL2" command, the
diff --git a/drivers/scsi/wd7000.c b/drivers/scsi/wd7000.c
index 03cd44f231df..b4304ae78527 100644
--- a/drivers/scsi/wd7000.c
+++ b/drivers/scsi/wd7000.c
@@ -1108,13 +1108,10 @@ static int wd7000_queuecommand(struct scsi_cmnd *SCpnt,
         scb->host = host;
 
         nseg = scsi_sg_count(SCpnt);
-        if (nseg) {
+        if (nseg > 1) {
                 struct scatterlist *sg;
                 unsigned i;
 
-                if (SCpnt->device->host->sg_tablesize == SG_NONE) {
-                        panic("wd7000_queuecommand: scatter/gather not supported.\n");
-                }
                 dprintk("Using scatter/gather with %d elements.\n", nseg);
 
                 sgb = scb->sgb;
@@ -1128,7 +1125,10 @@ static int wd7000_queuecommand(struct scsi_cmnd *SCpnt,
                 }
         } else {
                 scb->op = 0;
-                any2scsi(scb->dataptr, isa_virt_to_bus(scsi_sglist(SCpnt)));
+                if (nseg) {
+                        struct scatterlist *sg = scsi_sglist(SCpnt);
+                        any2scsi(scb->dataptr, isa_page_to_bus(sg_page(sg)) + sg->offset);
+                }
                 any2scsi(scb->maxlen, scsi_bufflen(SCpnt));
         }
 
@@ -1524,7 +1524,7 @@ static __init int wd7000_detect(struct scsi_host_template *tpnt)
                                  *  For boards before rev 6.0, scatter/gather isn't supported.
                                  */
                                 if (host->rev1 < 6)
-                                        sh->sg_tablesize = SG_NONE;
+                                        sh->sg_tablesize = 1;
 
                                 present++;      /* count it */