[SCSI] lpfc 8.2.8 v2 : Add statistical reporting control and additional fc vendor events

Added support for new sysfs attributes: lpfc_stat_data_ctrl and
lpfc_max_scsicmpl_time. The attributes control statistical reporting
of io load.

Added support for new fc vendor events for error reporting.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 15 insertions, 12 deletions

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 3a500d683065..60a9e6e9384b 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -40,6 +40,8 @@ struct lpfc_sli2_slim;
 #define LPFC_MIN_TGT_QDEPTH     100
 #define LPFC_MAX_TGT_QDEPTH     0xFFFF
 
+#define  LPFC_MAX_BUCKET_COUNT 20       /* Maximum no. of buckets for stat data
+                                           collection. */
 /*
  * Following time intervals are used of adjusting SCSI device
  * queue depths when there are driver resource error or Firmware
@@ -381,6 +383,8 @@ struct lpfc_vport {
         struct lpfc_debugfs_trc *disc_trc;
         atomic_t disc_trc_cnt;
 #endif
+        uint8_t stat_data_enabled;
+        uint8_t stat_data_blocked;
 };
 
 struct hbq_s {
@@ -641,6 +645,17 @@ struct lpfc_hba {
         uint32_t buffer_tag_count;
         int wait_4_mlo_maint_flg;
         wait_queue_head_t wait_4_mlo_m_q;
+        /* data structure used for latency data collection */
+#define LPFC_NO_BUCKET     0
+#define LPFC_LINEAR_BUCKET 1
+#define LPFC_POWER2_BUCKET 2
+        uint8_t  bucket_type;
+        uint32_t bucket_base;
+        uint32_t bucket_step;
+
+/* Maximum number of events that can be outstanding at any time*/
+#define LPFC_MAX_EVT_COUNT 512
+        atomic_t fast_event_count;
 };
 
 static inline struct Scsi_Host *
@@ -699,15 +714,3 @@ lpfc_sli_read_hs(struct lpfc_hba *phba)
         return;
 }
 
-#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