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megaraid_sas : Add separate function for refiring MFI commands 

This patch will add separate function for refiring MFI commands in Fusion
adapters's OCR code.

Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Sumit.Saxena@avagotech.com 2015-04-23 16:30:24 +05:30 committed by James Bottomley
parent d3557fc8be
commit 9b82818286
1 changed files with 39 additions and 41 deletions
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80
drivers/scsi/megaraid/megaraid_sas_fusion.c
View File

@ -2511,6 +2511,43 @@ void megasas_reset_reply_desc(struct megasas_instance *instance)
reply_desc->Words = ULLONG_MAX;
}
/*
* megasas_refire_mgmt_cmd : Re-fire management commands
* @instance: Controller's soft instance
*/
void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
{
int j;
struct megasas_cmd_fusion *cmd_fusion;
struct fusion_context *fusion;
struct megasas_cmd *cmd_mfi;
union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
u16 smid;
fusion = instance->ctrl_context;
/* Re-fire management commands.
* Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
*/
for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
cmd_fusion = fusion->cmd_list[j];
cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
smid = le16_to_cpu(cmd_mfi->context.smid);
if (!smid)
continue;
req_desc = megasas_get_request_descriptor
(instance, smid - 1);
if (req_desc && (cmd_mfi->frame->dcmd.opcode !=
cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO))) {
instance->instancet->fire_cmd(instance,
req_desc->u.low, req_desc->u.high,
instance->reg_set);
} else
megasas_return_cmd(instance, cmd_mfi);
}
}
/* Check for a second path that is currently UP */
int megasas_check_mpio_paths(struct megasas_instance *instance,
struct scsi_cmnd *scmd)
@ -2538,12 +2575,10 @@ out:
/* Core fusion reset function */
int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
{
int retval = SUCCESS, i, j, retry = 0, convert = 0;
int retval = SUCCESS, i, retry = 0, convert = 0;
struct megasas_instance *instance;
struct megasas_cmd_fusion *cmd_fusion;
struct fusion_context *fusion;
struct megasas_cmd *cmd_mfi;
union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
u32 host_diag, abs_state, status_reg, reset_adapter;
u32 io_timeout_in_crash_mode = 0;
@ -2790,44 +2825,7 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
continue;
}
/* Re-fire management commands */
for (j = 0 ; j < instance->max_fw_cmds; j++) {
cmd_fusion = fusion->cmd_list[j];
if (cmd_fusion->sync_cmd_idx !=
(u32)ULONG_MAX) {
cmd_mfi =
instance->
cmd_list[cmd_fusion->sync_cmd_idx];
if (cmd_mfi->frame->dcmd.opcode ==
cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) {
megasas_return_mfi_mpt_pthr(instance, cmd_mfi, cmd_fusion);
} else {
req_desc =
megasas_get_request_descriptor(
instance,
cmd_mfi->context.smid
-1);
if (!req_desc) {
printk(KERN_WARNING
"req_desc NULL"
" for scsi%d\n",
instance->host->host_no);
/* Return leaked MPT
frame */
megasas_return_cmd_fusion(instance, cmd_fusion);
} else {
instance->instancet->
fire_cmd(instance,
req_desc->
u.low,
req_desc->
u.high,
instance->
reg_set);
}
}
}
}
megasas_refire_mgmt_cmd(instance);
if (megasas_get_ctrl_info(instance)) {
dev_info(&instance->pdev->dev,