[SCSI] qla2xxx: Add hardware trace-logging support.

Recent ISPs have a region within FLASH which acts as a repository
for the logging of serious hardware and software failures.
Currently, the region is large enough to support up to 255
entries.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index eb77067533ab..3d290417bfc6 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1690,6 +1690,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
                 ha->gid_list_info_size = 8;
                 ha->optrom_size = OPTROM_SIZE_25XX;
                 ha->isp_ops = &qla25xx_isp_ops;
+                ha->hw_event_start = PCI_FUNC(pdev->devfn) ?
+                    FA_HW_EVENT1_ADDR: FA_HW_EVENT0_ADDR;
         }
         host->can_queue = ha->request_q_length + 128;
 
@@ -2244,6 +2246,23 @@ qla2x00_post_aen_work(struct scsi_qla_host *ha, enum fc_host_event_code code,
         return qla2x00_post_work(ha, e, 1);
 }
 
+int
+qla2x00_post_hwe_work(struct scsi_qla_host *ha, uint16_t code, uint16_t d1,
+    uint16_t d2, uint16_t d3)
+{
+        struct qla_work_evt *e;
+
+        e = qla2x00_alloc_work(ha, QLA_EVT_HWE_LOG, 1);
+        if (!e)
+                return QLA_FUNCTION_FAILED;
+
+        e->u.hwe.code = code;
+        e->u.hwe.d1 = d1;
+        e->u.hwe.d2 = d2;
+        e->u.hwe.d3 = d3;
+        return qla2x00_post_work(ha, e, 1);
+}
+
 static void
 qla2x00_do_work(struct scsi_qla_host *ha)
 {
@@ -2260,6 +2279,10 @@ qla2x00_do_work(struct scsi_qla_host *ha)
                         fc_host_post_event(ha->host, fc_get_event_number(),
                             e->u.aen.code, e->u.aen.data);
                         break;
+                case QLA_EVT_HWE_LOG:
+                        qla2xxx_hw_event_log(ha, e->u.hwe.code, e->u.hwe.d1,
+                            e->u.hwe.d2, e->u.hwe.d3);
+                        break;
                 }
                 if (e->flags & QLA_EVT_FLAG_FREE)
                         kfree(e);