Executing driver on servers with more than 32 CPUs were faced with command
timeouts. This is because we were not geting completions for commands
submitted on IQ32 - IQ63.
Set E64Q bit to enable upper inbound and outbound queues 32 to 63 in the
MPI main configuration table.
Added 500ms delay after successful MPI initialization as mentioned in
controller datasheet.
Signed-off-by: Ajish Koshy <Ajish.Koshy@xxxxxxxxxxxxx>
Signed-off-by: Viswas G <Viswas.G@xxxxxxxxxxxxx>
Fixes: 05c6c029a44d ("scsi: pm80xx: Increase number of supported queues")
Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Acked-by: Jack Wang <jinpu.wang@xxxxxxxxx>
---
drivers/scsi/pm8001/pm80xx_hwi.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index a331a8ad0558..575d0f2a2d40 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -766,6 +766,10 @@ static void init_default_table_values(struct pm8001_hba_info *pm8001_ha)
pm8001_ha->main_cfg_tbl.pm80xx_tbl.pcs_event_log_severity = 0x01;
pm8001_ha->main_cfg_tbl.pm80xx_tbl.fatal_err_interrupt = 0x01;
+ /* Enable higher IQs and OQs, 32 to 63, bit 16 */
+ if (pm8001_ha->max_q_num > 32)
+ pm8001_ha->main_cfg_tbl.pm80xx_tbl.fatal_err_interrupt |=
+ 1 << 16;
/* Disable end to end CRC checking */
pm8001_ha->main_cfg_tbl.pm80xx_tbl.crc_core_dump = (0x1 << 16);
@@ -1027,6 +1031,13 @@ static int mpi_init_check(struct pm8001_hba_info *pm8001_ha)
if (0x0000 != gst_len_mpistate)
return -EBUSY;
+ /*
+ * As per controller datasheet, after successful MPI
+ * initialization minimum 500ms delay is required before
+ * issuing commands.
+ */
+ msleep(500);
+
return 0;
}
--
2.31.1
