scsi: pm80xx: Enable upper inbound, outbound queues

stable inclusion
from stable-v5.10.112
commit da9cf24aa739f48cdbf5b2624eacb4a6c81cf9e9
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5HL0X

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=da9cf24aa739f48cdbf5b2624eacb4a6c81cf9e9

--------------------------------

[ Upstream commit bcd8a452 ]

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.

Link: https://lore.kernel.org/r/20220411064603.668448-3-Ajish.Koshy@microchip.com
Fixes: 05c6c029 ("scsi: pm80xx: Increase number of supported queues")
Reviewed-by: NDamien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: NJack Wang <jinpu.wang@ionos.com>
Signed-off-by: NAjish Koshy <Ajish.Koshy@microchip.com>
Signed-off-by: NViswas G <Viswas.G@microchip.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>

drivers/scsi/pm8001/pm80xx_hwi.c

@@ -765,6 +765,10 @@ 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);
 
@@ -1024,6 +1028,13 @@ 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;
 }