[SCSI] aacraid: add Voodoo Lite class of cards.

The cards being added are supported in a limited sense already through
family matching, but we needed to add some functionality to the driver
to expose selectively the physical drives. These Physical drives are
specifically marked to not be part of any array and thus are declared
JBODs (Just a Bunch Of Drives) for generic SCSI access.

We report that this is the second patch in a set of two, but merely
depends on the stand-alone functionality of the first patch which adds
in that case the ability to report a driver feature flag via sysfs. We
leverage that functionality by reporting that this driver now supports
this new JBOD feature for the controller so that the array management
applications may react accordingly and guide the user as they manage
the controller.

Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

4 files changed, 44 insertions, 6 deletions

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 8d7b7703ee2a..d7235f42cf5f 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -1339,6 +1339,8 @@ int aac_get_adapter_info(struct aac_dev* dev)
         }
 
         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)
@@ -1923,7 +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);
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 8a5b9c898e5b..3195d29f2177 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -12,7 +12,7 @@
  *----------------------------------------------------------------------------*/
 
 #ifndef AAC_DRIVER_BUILD
-# define AAC_DRIVER_BUILD 2454
+# define AAC_DRIVER_BUILD 2455
 # define AAC_DRIVER_BRANCH "-ms"
 #endif
 #define MAXIMUM_NUM_CONTAINERS  32
@@ -866,6 +866,7 @@ struct aac_supplement_adapter_info
         __le32  ReservedGrowth[1];
 };
 #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
@@ -1012,6 +1013,7 @@ struct aac_dev
          * lets break them out so we don't have to do an AND to check them
          */
         u8                      nondasd_support;
+        u8                      jbod;
         u8                      cache_protected;
         u8                      dac_support;
         u8                      raid_scsi_mode;
@@ -1777,6 +1779,8 @@ extern struct aac_common aac_config;
 #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 */
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 1dd2e57c3345..81b36923e0ef 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -901,7 +901,31 @@ 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:
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 5ab733d4faf4..61be22774e99 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -404,6 +404,7 @@ 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) &&
+                        (!aac->jbod || sdev->inq_periph_qual) &&
                         (!aac->raid_scsi_mode || (sdev_channel(sdev) != 2))) {
                 if (expose_physicals == 0)
                         return -ENXIO;
@@ -411,7 +412,8 @@ static int aac_slave_configure(struct scsi_device *sdev)
                         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;
@@ -430,8 +432,11 @@ static int aac_slave_configure(struct scsi_device *sdev)
                                 ++num_lsu;
                 __shost_for_each_device(dev, host) {
                         if (dev->tagged_supported && (dev->type == TYPE_DISK) &&
-                                (sdev_channel(dev) == CONTAINER_CHANNEL)) {
-                                if (!aac->fsa_dev[sdev_id(dev)].valid)
+                                        (!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;
@@ -804,6 +809,8 @@ static ssize_t aac_show_flags(struct class_device *class_dev, char *buf)
         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;
 }
 
@@ -1157,7 +1164,7 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
          * 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;