Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull first round of SCSI updates from James Bottomley:
 "This patch consists of the usual driver updates (megaraid_sas,
  scsi_debug, qla2xxx, qla4xxx, lpfc, bnx2fc, be2iscsi, hpsa, ipr) plus
  an assortment of minor fixes and the first precursors of SCSI-MQ (the
  code path simplifications) and the bug fix for the USB oops on remove
  (which involves an infrastructure change, so is sent via the main tree
  with a delayed backport after a cycle in which it is shown to
  introduce no new bugs)"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (196 commits)
  [SCSI] sd: Quiesce mode sense error messages
  [SCSI] add support for per-host cmd pools
  [SCSI] simplify command allocation and freeing a bit
  [SCSI] megaraid: simplify internal command handling
  [SCSI] ses: Use vpd information from scsi_device
  [SCSI] Add EVPD page 0x83 and 0x80 to sysfs
  [SCSI] Return VPD page length in scsi_vpd_inquiry()
  [SCSI] scsi_sysfs: Implement 'is_visible' callback
  [SCSI] hpsa: update driver version to 3.4.4-1
  [SCSI] hpsa: fix bad endif placement in RAID 5 mapper code
  [SCSI] qla2xxx: Fix build errors related to invalid print fields on some architectures.
  [SCSI] bfa: Replace large udelay() with mdelay()
  [SCSI] vmw_pvscsi: Some improvements in pvscsi driver.
  [SCSI] vmw_pvscsi: Add support for I/O requests coalescing.
  [SCSI] vmw_pvscsi: Fix pvscsi_abort() function.
  [SCSI] remove deprecated IRQF_DISABLED from SCSI
  [SCSI] bfa: Updating Maintainers email ids
  [SCSI] ipr: Add new CCIN definition for Grand Canyon support
  [SCSI] ipr: Format HCAM overlay ID 0x21
  [SCSI] ipr: Use pci_enable_msi_range() and pci_enable_msix_range()
  ...

7 files changed, 44 insertions, 12 deletions

diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 297a8026f454..d4de24b4d4c6 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -728,6 +728,7 @@
 #define PCI_DEVICE_ID_SI_7018           0x7018
 
 #define PCI_VENDOR_ID_HP                0x103c
+#define PCI_VENDOR_ID_HP_3PAR           0x1590
 #define PCI_DEVICE_ID_HP_VISUALIZE_EG   0x1005
 #define PCI_DEVICE_ID_HP_VISUALIZE_FX6  0x1006
 #define PCI_DEVICE_ID_HP_VISUALIZE_FX4  0x1008
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 309f51336fb9..7221a24e821b 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -327,12 +327,19 @@ struct iscsi_session {
         struct iscsi_transport  *tt;
         struct Scsi_Host        *host;
         struct iscsi_conn       *leadconn;      /* leading connection */
-        spinlock_t              lock;           /* protects session state, *
-                                                 * sequence numbers,       *
+        /* Between the forward and the backward locks exists a strict locking
+         * hierarchy. The mutual exclusion zone protected by the forward lock
+         * can enclose the mutual exclusion zone protected by the backward lock
+         * but not vice versa.
+         */
+        spinlock_t              frwd_lock;      /* protects session state, *
+                                                 * cmdsn, queued_cmdsn     *
                                                  * session resources:      *
-                                                 * - cmdpool,              *
-                                                 * - mgmtpool,             *
-                                                 * - r2tpool               */
+                                                 * - cmdpool kfifo_out ,   *
+                                                 * - mgmtpool,             */
+        spinlock_t              back_lock;      /* protects cmdsn_exp      *
+                                                 * cmdsn_max,              *
+                                                 * cmdpool kfifo_in        */
         int                     state;          /* session state           */
         int                     age;            /* counts session re-opens */
 
diff --git a/include/scsi/libiscsi_tcp.h b/include/scsi/libiscsi_tcp.h
index 215469a9b801..2a7aa75dd009 100644
--- a/include/scsi/libiscsi_tcp.h
+++ b/include/scsi/libiscsi_tcp.h
@@ -83,6 +83,8 @@ struct iscsi_tcp_task {
         struct iscsi_pool       r2tpool;
         struct kfifo            r2tqueue;
         void                    *dd_data;
+        spinlock_t              pool2queue;
+        spinlock_t              queue2pool;
 };
 
 enum {
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 91558a1f97f4..dd7c998221b3 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -142,8 +142,7 @@ static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
 extern struct scsi_cmnd *scsi_get_command(struct scsi_device *, gfp_t);
 extern struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *, gfp_t);
 extern void scsi_put_command(struct scsi_cmnd *);
-extern void __scsi_put_command(struct Scsi_Host *, struct scsi_cmnd *,
-                               struct device *);
+extern void __scsi_put_command(struct Scsi_Host *, struct scsi_cmnd *);
 extern void scsi_finish_command(struct scsi_cmnd *cmd);
 
 extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
@@ -156,9 +155,6 @@ extern void scsi_release_buffers(struct scsi_cmnd *cmd);
 extern int scsi_dma_map(struct scsi_cmnd *cmd);
 extern void scsi_dma_unmap(struct scsi_cmnd *cmd);
 
-struct scsi_cmnd *scsi_allocate_command(gfp_t gfp_mask);
-void scsi_free_command(gfp_t gfp_mask, struct scsi_cmnd *cmd);
-
 static inline unsigned scsi_sg_count(struct scsi_cmnd *cmd)
 {
         return cmd->sdb.table.nents;
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index d65fbec2533d..4e845b80efd3 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -113,6 +113,12 @@ struct scsi_device {
         const char * vendor;            /* [back_compat] point into 'inquiry' ... */
         const char * model;             /* ... after scan; point to static string */
         const char * rev;               /* ... "nullnullnullnull" before scan */
+
+#define SCSI_VPD_PG_LEN                255
+        int vpd_pg83_len;
+        unsigned char *vpd_pg83;
+        int vpd_pg80_len;
+        unsigned char *vpd_pg80;
         unsigned char current_tag;      /* current tag */
         struct scsi_target      *sdev_target;   /* used only for single_lun */
 
@@ -235,12 +241,24 @@ struct scsi_dh_data {
 #define sdev_printk(prefix, sdev, fmt, a...)    \
         dev_printk(prefix, &(sdev)->sdev_gendev, fmt, ##a)
 
+#define sdev_dbg(sdev, fmt, a...) \
+        dev_dbg(&(sdev)->sdev_gendev, fmt, ##a)
+
 #define scmd_printk(prefix, scmd, fmt, a...)                            \
         (scmd)->request->rq_disk ?                                      \
         sdev_printk(prefix, (scmd)->device, "[%s] " fmt,                \
                     (scmd)->request->rq_disk->disk_name, ##a) :         \
         sdev_printk(prefix, (scmd)->device, fmt, ##a)
 
+#define scmd_dbg(scmd, fmt, a...)                                          \
+        do {                                                               \
+                if ((scmd)->request->rq_disk)                              \
+                        sdev_dbg((scmd)->device, "[%s] " fmt,              \
+                                 (scmd)->request->rq_disk->disk_name, ##a);\
+                else                                                       \
+                        sdev_dbg((scmd)->device, fmt, ##a);                \
+        } while (0)
+
 enum scsi_target_state {
         STARGET_CREATED = 1,
         STARGET_RUNNING,
@@ -257,7 +275,7 @@ struct scsi_target {
         struct list_head        siblings;
         struct list_head        devices;
         struct device           dev;
-        unsigned int            reap_ref; /* protected by the host lock */
+        struct kref             reap_ref; /* last put renders target invisible */
         unsigned int            channel;
         unsigned int            id; /* target id ... replace
                                      * scsi_device.id eventually */
@@ -284,7 +302,6 @@ struct scsi_target {
 #define SCSI_DEFAULT_TARGET_BLOCKED     3
 
         char                    scsi_level;
-        struct execute_work     ew;
         enum scsi_target_state  state;
         void                    *hostdata; /* available to low-level driver */
         unsigned long           starget_data[0]; /* for the transport */
@@ -309,6 +326,7 @@ extern int scsi_add_device(struct Scsi_Host *host, uint channel,
 extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh);
 extern void scsi_remove_device(struct scsi_device *);
 extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh);
+void scsi_attach_vpd(struct scsi_device *sdev);
 
 extern int scsi_device_get(struct scsi_device *);
 extern void scsi_device_put(struct scsi_device *);
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 53075e5039e6..94844fc77b97 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -15,6 +15,7 @@ struct completion;
 struct module;
 struct scsi_cmnd;
 struct scsi_device;
+struct scsi_host_cmd_pool;
 struct scsi_target;
 struct Scsi_Host;
 struct scsi_host_cmd_pool;
@@ -524,6 +525,12 @@ struct scsi_host_template {
          *   scsi_netlink.h
          */
         u64 vendor_id;
+
+        /*
+         * Additional per-command data allocated for the driver.
+         */
+        unsigned int cmd_size;
+        struct scsi_host_cmd_pool *cmd_pool;
 };
 
 /*
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index b797e8fad669..8c79980dc8f2 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -130,6 +130,7 @@ enum fc_vport_state {
 #define FC_PORTSPEED_4GBIT              8
 #define FC_PORTSPEED_8GBIT              0x10
 #define FC_PORTSPEED_16GBIT             0x20
+#define FC_PORTSPEED_32GBIT             0x40
 #define FC_PORTSPEED_NOT_NEGOTIATED     (1 << 15) /* Speed not established */
 
 /*