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scsi: be2iscsi: Add IOCTL to check UER supported

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BE3 and SH cards can recover from transient parity errors treated
earlier as unrecoverable errors.

Add IOCTL to query FW support for this feature.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Jitendra Bhivare
2016-08-19 15:20:14 +05:30
committed by Martin K. Petersen
parent 10bcd47dff
commit 6694095b5a
5 changed files with 89 additions and 19 deletions
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58
drivers/scsi/be2iscsi/be_cmds.c
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@@ -277,11 +277,10 @@ int beiscsi_mccq_compl_wait(struct beiscsi_hba *phba,
static int beiscsi_process_mbox_compl(struct be_ctrl_info *ctrl,
struct be_mcc_compl *compl)
{
u16 compl_status, extd_status;
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
struct be_cmd_req_hdr *hdr = embedded_payload(wrb);
struct be_cmd_resp_hdr *resp_hdr;
u16 compl_status, extd_status;
/**
* To check if valid bit is set, check the entire word as we don't know
@@ -315,14 +314,7 @@ static int beiscsi_process_mbox_compl(struct be_ctrl_info *ctrl,
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
"BC_%d : error in cmd completion: Subsystem : %d Opcode : %d status(compl/extd)=%d/%d\n",
hdr->subsystem, hdr->opcode, compl_status, extd_status);
if (compl_status == MCC_STATUS_INSUFFICIENT_BUFFER) {
/* if status is insufficient buffer, check the length */
resp_hdr = (struct be_cmd_resp_hdr *) hdr;
if (resp_hdr->response_length)
return 0;
}
return -EINVAL;
return compl_status;
}
static void beiscsi_process_async_link(struct beiscsi_hba *phba,
@@ -507,10 +499,8 @@ int beiscsi_process_mcc_compl(struct be_ctrl_info *ctrl,
if (ctrl->ptag_state[tag].cbfn)
ctrl->ptag_state[tag].cbfn(phba, tag);
else
beiscsi_log(phba, KERN_ERR,
BEISCSI_LOG_MBOX | BEISCSI_LOG_INIT |
BEISCSI_LOG_CONFIG,
"BC_%d : MBX ASYNC command with no callback\n");
__beiscsi_log(phba, KERN_ERR,
"BC_%d : MBX ASYNC command with no callback\n");
free_mcc_wrb(ctrl, tag);
return 0;
}
@@ -1371,3 +1361,43 @@ int be_cmd_set_vlan(struct beiscsi_hba *phba,
return tag;
}
int beiscsi_set_uer_feature(struct beiscsi_hba *phba)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_cmd_set_features *ioctl;
struct be_mcc_wrb *wrb;
int ret = 0;
mutex_lock(&ctrl->mbox_lock);
wrb = wrb_from_mbox(&ctrl->mbox_mem);
memset(wrb, 0, sizeof(*wrb));
ioctl = embedded_payload(wrb);
be_wrb_hdr_prepare(wrb, sizeof(*ioctl), true, 0);
be_cmd_hdr_prepare(&ioctl->h.req_hdr, CMD_SUBSYSTEM_COMMON,
OPCODE_COMMON_SET_FEATURES,
EMBED_MBX_MAX_PAYLOAD_SIZE);
ioctl->feature = BE_CMD_SET_FEATURE_UER;
ioctl->param_len = sizeof(ioctl->param.req);
ioctl->param.req.uer = BE_CMD_UER_SUPP_BIT;
ret = be_mbox_notify(ctrl);
if (!ret) {
phba->ue2rp = ioctl->param.resp.ue2rp;
set_bit(BEISCSI_HBA_UER_SUPP, &phba->state);
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
"BG_%d : HBA error recovery supported\n");
} else {
/**
* Check "MCC_STATUS_INVALID_LENGTH" for SKH.
* Older FW versions return this error.
*/
if (ret == MCC_STATUS_ILLEGAL_REQUEST ||
ret == MCC_STATUS_INVALID_LENGTH)
__beiscsi_log(phba, KERN_INFO,
"BG_%d : HBA error recovery not supported\n");
}
mutex_unlock(&ctrl->mbox_lock);
return ret;
}