[SCSI] lpfc 8.2.3 : Added support for ASICs that report temperature

Added support for ASICs that report temperature. Temperature notices are
 reported as events and logged. Temperature can be read via sysfs.

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

1 files changed, 55 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index ecebdfa00470..17f445478beb 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                                             */
@@ -409,7 +421,21 @@ 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);
 }
 
@@ -601,6 +627,8 @@ 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;
 
@@ -655,6 +683,33 @@ 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);
+
+                psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
+                lpfc_offline_prep(phba);
+                lpfc_offline(phba);
+                lpfc_unblock_mgmt_io(phba);
+                phba->link_state = LPFC_HBA_ERROR;
+                lpfc_hba_down_post(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