[SCSI] lpfc 8.3.12: BSG Fixes and enhancements

- Add memcpy to mailbox completion to transfer reply correctly.
- Add support for BSG mailbox commands (dump, update_cfg, and
   event_log_status).
- Add warning message and refuse mailbox command while mgmt is blocked.
- Add checks for memory allocation failure.
- Add check for sli4 dump zero BDE size.
- Only copy data if mailbox commands succeed.
- Add support for Read Event Log mailbox command.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index 0cf9a2bd3469..e654d01dad24 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -1732,6 +1732,17 @@ typedef struct {
         } un;
 } BIU_DIAG_VAR;
 
+/* Structure for MB command READ_EVENT_LOG (0x38) */
+struct READ_EVENT_LOG_VAR {
+        uint32_t word1;
+#define lpfc_event_log_SHIFT    29
+#define lpfc_event_log_MASK     0x00000001
+#define lpfc_event_log_WORD     word1
+#define USE_MAILBOX_RESPONSE    1
+        uint32_t offset;
+        struct ulp_bde64 rcv_bde64;
+};
+
 /* Structure for MB Command INIT_LINK (05) */
 
 typedef struct {
@@ -2966,6 +2977,9 @@ typedef union {
         REG_VPI_VAR varRegVpi;          /* cmd = 0x96 (REG_VPI) */
         UNREG_VPI_VAR varUnregVpi;      /* cmd = 0x97 (UNREG_VPI) */
         ASYNCEVT_ENABLE_VAR varCfgAsyncEvent; /*cmd = x33 (CONFIG_ASYNC) */
+        struct READ_EVENT_LOG_VAR varRdEventLog;        /* cmd = 0x38
+                                                         * (READ_EVENT_LOG)
+                                                         */
         struct config_msi_var varCfgMSI;/* cmd = x30 (CONFIG_MSI)     */
 } MAILVARIANTS;