aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi
diff options
context:
space:
mode:
authorShivasharan S <shivasharan.srikanteshwara@broadcom.com>2018-01-05 05:27:47 -0800
committerMartin K. Petersen <martin.petersen@oracle.com>2018-01-10 23:25:19 -0500
commit54b28049ac1bc5a1141fdd8997187206f87b0a29 (patch)
tree80575320ae277893abe21184711dd21b3a9f3120 /drivers/scsi
parent88d155c61acd3fb852c0a20be2d840f0765cae7c (diff)
scsi: megaraid_sas: re-work DCMD refire code
No functional changes. This patch is a re-work of DCMD refire code to better manage all the different cases to decide whether to REFIRE or SKIP or COMPLETE certain DCMD. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_base.c6
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fusion.c55
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fusion.h6
3 files changed, 48 insertions, 19 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 40775408c222..d92279eec8f8 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -4694,10 +4694,12 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
sizeof(struct megasas_ctrl_info));
if ((instance->adapter_type != MFI_SERIES) &&
- !instance->mask_interrupts)
+ !instance->mask_interrupts) {
ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
- else
+ } else {
ret = megasas_issue_polled(instance, cmd);
+ cmd->flags |= DRV_DCMD_SKIP_REFIRE;
+ }
switch (ret) {
case DCMD_SUCCESS:
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index ef36f2ac7cb6..0a85f3c48ef6 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -3957,6 +3957,8 @@ void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
u16 smid;
bool refire_cmd = 0;
+ u8 result;
+ u32 opcode = 0;
fusion = instance->ctrl_context;
@@ -3967,29 +3969,47 @@ void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
cmd_fusion = fusion->cmd_list[j];
cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
smid = le16_to_cpu(cmd_mfi->context.smid);
+ result = REFIRE_CMD;
if (!smid)
continue;
- /* Do not refire shutdown command */
- if (le32_to_cpu(cmd_mfi->frame->dcmd.opcode) ==
- MR_DCMD_CTRL_SHUTDOWN) {
- cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
- megasas_complete_cmd(instance, cmd_mfi, DID_OK);
- continue;
+ req_desc = megasas_get_request_descriptor(instance, smid - 1);
+
+ switch (cmd_mfi->frame->hdr.cmd) {
+ case MFI_CMD_DCMD:
+ opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
+ /* Do not refire shutdown command */
+ if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
+ cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
+ result = COMPLETE_CMD;
+ break;
+ }
+
+ refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
+ (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
+ !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
+
+ if (!refire_cmd)
+ result = RETURN_CMD;
+
+ break;
+
+ default:
+ break;
}
- req_desc = megasas_get_request_descriptor
- (instance, smid - 1);
- refire_cmd = req_desc && ((cmd_mfi->frame->dcmd.opcode !=
- cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) &&
- (cmd_mfi->frame->dcmd.opcode !=
- cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO)))
- && !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
- if (refire_cmd)
+ switch (result) {
+ case REFIRE_CMD:
megasas_fire_cmd_fusion(instance, req_desc);
- else
+ break;
+ case RETURN_CMD:
megasas_return_cmd(instance, cmd_mfi);
+ break;
+ case COMPLETE_CMD:
+ megasas_complete_cmd(instance, cmd_mfi, DID_OK);
+ break;
+ }
}
}
@@ -4629,8 +4649,6 @@ transition_to_ready:
continue;
}
- megasas_refire_mgmt_cmd(instance);
-
if (megasas_get_ctrl_info(instance)) {
dev_info(&instance->pdev->dev,
"Failed from %s %d\n",
@@ -4639,6 +4657,9 @@ transition_to_ready:
retval = FAILED;
goto out;
}
+
+ megasas_refire_mgmt_cmd(instance);
+
/* Reset load balance info */
if (fusion->load_balance_info)
memset(fusion->load_balance_info, 0,
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 1814d79cb98d..8e5ebee6517f 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -1344,6 +1344,12 @@ union desc_value {
} u;
};
+enum CMD_RET_VALUES {
+ REFIRE_CMD = 1,
+ COMPLETE_CMD = 2,
+ RETURN_CMD = 3,
+};
+
void megasas_free_cmds_fusion(struct megasas_instance *instance);
int megasas_ioc_init_fusion(struct megasas_instance *instance);
u8 megasas_get_map_info(struct megasas_instance *instance);

Privacy Policy