Commit 79db8301 authored by Chandrakanth Patil's avatar Chandrakanth Patil Committed by Martin K. Petersen
Browse files

scsi: megaraid_sas: Send all non-RW I/Os for TYPE_ENCLOSURE device through firmware 

The driver issues all non-ReadWrite I/Os for TYPE_ENCLOSURE devices through
the fast path with invalid dev handle. Fast path in turn directs all the
I/Os to the firmware. As firmware stopped handling those I/Os from SAS3.5
generation of controllers (Ventura generation and onwards) this will lead
to I/O failures.

Switch the driver to issue all the non-ReadWrite I/Os for TYPE_ENCLOSURE
devices directly to firmware for SAS3.5 generation of controllers and
later.

Link: https://lore.kernel.org/r/20210528131307.25683-2-chandrakanth.patil@broadcom.com


Cc: <stable@vger.kernel.org> # v5.11+
Signed-off-by: default avatarChandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: default avatarSumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 9fc4abfe

drivers/scsi/megaraid/megaraid_sas_fusion.c

+8 −2
Original line number Diff line number Diff line
@@ -3203,6 +3203,8 @@ megasas_build_io_fusion(struct megasas_instance *instance, 
{

	int sge_count;

	u8  cmd_type;

	u16 pd_index = 0;

	u8 drive_type = 0;

	struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;

	struct MR_PRIV_DEVICE *mr_device_priv_data;

	mr_device_priv_data = scp->device->hostdata;
@@ -3237,8 +3239,12 @@ megasas_build_io_fusion(struct megasas_instance *instance, 
		megasas_build_syspd_fusion(instance, scp, cmd, true);

		break;

	case NON_READ_WRITE_SYSPDIO:

		if (instance->secure_jbod_support ||

		    mr_device_priv_data->is_tm_capable)

		pd_index = MEGASAS_PD_INDEX(scp);

		drive_type = instance->pd_list[pd_index].driveType;

		if ((instance->secure_jbod_support ||

		     mr_device_priv_data->is_tm_capable) ||

		     (instance->adapter_type >= VENTURA_SERIES &&

		     drive_type == TYPE_ENCLOSURE))

			megasas_build_syspd_fusion(instance, scp, cmd, false);

		else

			megasas_build_syspd_fusion(instance, scp, cmd, true);