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scsi: cxlflash: Update send_tmf() parameters 

The current send_tmf() implementation is based on the caller providing a
SCSI command reference. In reality all that is needed is a SCSI device
reference as the routine uses a private command.

Refactor send_tmf() to pass the private adapter configuration reference
and a SCSI device reference. As a nice side effect, this will ease the
burden of converting caller routines to be based solely off of a SCSI
device reference.

Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Matthew R. Ochs 2017-06-28 12:14:30 -05:00 committed by Martin K. Petersen
parent acfeb23b29
commit 32abbedaaf
1 changed files with 13 additions and 14 deletions
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27
drivers/scsi/cxlflash/main.c
View File

@ -459,21 +459,20 @@ static u32 cmd_to_target_hwq(struct Scsi_Host *host, struct scsi_cmnd *scp,
/**
* send_tmf() - sends a Task Management Function (TMF)
* @afu: AFU to checkout from.
* @scp: SCSI command from stack describing target.
* @cfg: Internal structure associated with the host.
* @sdev: SCSI device destined for TMF.
* @tmfcmd: TMF command to send.
*
* Return:
* 0 on success, SCSI_MLQUEUE_HOST_BUSY or -errno on failure
*/
static int send_tmf(struct afu *afu, struct scsi_cmnd *scp, u64 tmfcmd)
static int send_tmf(struct cxlflash_cfg *cfg, struct scsi_device *sdev,
u64 tmfcmd)
{
struct Scsi_Host *host = scp->device->host;
struct cxlflash_cfg *cfg = shost_priv(host);
struct afu *afu = cfg->afu;
struct afu_cmd *cmd = NULL;
struct device *dev = &cfg->dev->dev;
int hwq_index = cmd_to_target_hwq(host, scp, afu);
struct hwq *hwq = get_hwq(afu, hwq_index);
struct hwq *hwq = get_hwq(afu, PRIMARY_HWQ);
char *buf = NULL;
ulong lock_flags;
int rc = 0;
@ -500,12 +499,12 @@ static int send_tmf(struct afu *afu, struct scsi_cmnd *scp, u64 tmfcmd)
cmd->parent = afu;
cmd->cmd_tmf = true;
cmd->hwq_index = hwq_index;
cmd->hwq_index = hwq->index;
cmd->rcb.ctx_id = hwq->ctx_hndl;
cmd->rcb.msi = SISL_MSI_RRQ_UPDATED;
cmd->rcb.port_sel = CHAN2PORTMASK(scp->device->channel);
cmd->rcb.lun_id = lun_to_lunid(scp->device->lun);
cmd->rcb.port_sel = CHAN2PORTMASK(sdev->channel);
cmd->rcb.lun_id = lun_to_lunid(sdev->lun);
cmd->rcb.req_flags = (SISL_REQ_FLAGS_PORT_LUN_ID |
SISL_REQ_FLAGS_SUP_UNDERRUN |
SISL_REQ_FLAGS_TMF_CMD);
@ -2430,15 +2429,15 @@ out:
static int cxlflash_eh_device_reset_handler(struct scsi_cmnd *scp)
{
int rc = SUCCESS;
struct Scsi_Host *host = scp->device->host;
struct scsi_device *sdev = scp->device;
struct Scsi_Host *host = sdev->host;
struct cxlflash_cfg *cfg = shost_priv(host);
struct device *dev = &cfg->dev->dev;
struct afu *afu = cfg->afu;
int rcr = 0;
dev_dbg(dev, "%s: (scp=%p) %d/%d/%d/%llu "
"cdb=(%08x-%08x-%08x-%08x)\n", __func__, scp, host->host_no,
scp->device->channel, scp->device->id, scp->device->lun,
sdev->channel, sdev->id, sdev->lun,
get_unaligned_be32(&((u32 *)scp->cmnd)[0]),
get_unaligned_be32(&((u32 *)scp->cmnd)[1]),
get_unaligned_be32(&((u32 *)scp->cmnd)[2]),
@ -2447,7 +2446,7 @@ static int cxlflash_eh_device_reset_handler(struct scsi_cmnd *scp)
retry:
switch (cfg->state) {
case STATE_NORMAL:
rcr = send_tmf(afu, scp, TMF_LUN_RESET);
rcr = send_tmf(cfg, sdev, TMF_LUN_RESET);
if (unlikely(rcr))
rc = FAILED;
break;