scsi: qla2xxx: Add logs for SFP temperature monitoring

Add logs for SFP Temperature Alert async event to check if laser is
enabled/disabled.

Signed-off-by: Bikash Hazarika <bhazarika@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20230821130045.34850-5-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 867025c..e987881 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -56,6 +56,22 @@ const char *const port_state_str[] = {
        [FCS_ONLINE]            = "ONLINE"
 };
 
+#define SFP_DISABLE_LASER_INITIATED    0x15  /* Sub code of 8070 AEN */
+#define SFP_ENABLE_LASER_INITIATED     0x16  /* Sub code of 8070 AEN */
+
+static inline void display_Laser_info(scsi_qla_host_t *vha,
+                                     u16 mb1, u16 mb2, u16 mb3) {
+
+       if (mb1 == SFP_DISABLE_LASER_INITIATED)
+               ql_log(ql_log_warn, vha, 0xf0a2,
+                      "SFP temperature (%d C) reached/exceeded the threshold (%d C). Laser is disabled.\n",
+                      mb3, mb2);
+       if (mb1 == SFP_ENABLE_LASER_INITIATED)
+               ql_log(ql_log_warn, vha, 0xf0a3,
+                      "SFP temperature (%d C) reached normal operating level. Laser is enabled.\n",
+                      mb3);
+}
+
 static void
 qla24xx_process_abts(struct scsi_qla_host *vha, struct purex_item *pkt)
 {
@@ -1927,6 +1943,8 @@ global_port_update:
                break;
 
        case MBA_TEMPERATURE_ALERT:
+               if (IS_QLA27XX(ha) || IS_QLA28XX(ha))
+                       display_Laser_info(vha, mb[1], mb[2], mb[3]);
                ql_dbg(ql_dbg_async, vha, 0x505e,
                    "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
                break;