mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 18:14:07 +08:00
scsi: cxlflash: Migrate IOARRIN specific routines to function pointers
As staging for supporting hardware with a different queuing mechanism, move the send_cmd() and context_reset() routines to function pointers that are configured when the AFU is initialized. In addition, rename the existing routines to better reflect the queue model they support. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Acked-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
parent
9d89326c66
commit
48b4be36ed
@ -161,6 +161,9 @@ struct afu {
|
||||
* fields after this point
|
||||
*/
|
||||
|
||||
int (*send_cmd)(struct afu *, struct afu_cmd *);
|
||||
void (*context_reset)(struct afu_cmd *);
|
||||
|
||||
/* AFU HW */
|
||||
struct cxl_ioctl_start_work work;
|
||||
struct cxlflash_afu_map __iomem *afu_map; /* entire MMIO map */
|
||||
|
@ -188,12 +188,10 @@ static void cmd_complete(struct afu_cmd *cmd)
|
||||
}
|
||||
|
||||
/**
|
||||
* context_reset() - timeout handler for AFU commands
|
||||
* context_reset_ioarrin() - reset command owner context via IOARRIN register
|
||||
* @cmd: AFU command that timed out.
|
||||
*
|
||||
* Sends a reset to the AFU.
|
||||
*/
|
||||
static void context_reset(struct afu_cmd *cmd)
|
||||
static void context_reset_ioarrin(struct afu_cmd *cmd)
|
||||
{
|
||||
int nretry = 0;
|
||||
u64 rrin = 0x1;
|
||||
@ -217,14 +215,14 @@ static void context_reset(struct afu_cmd *cmd)
|
||||
}
|
||||
|
||||
/**
|
||||
* send_cmd() - sends an AFU command
|
||||
* send_cmd_ioarrin() - sends an AFU command via IOARRIN register
|
||||
* @afu: AFU associated with the host.
|
||||
* @cmd: AFU command to send.
|
||||
*
|
||||
* Return:
|
||||
* 0 on success, SCSI_MLQUEUE_HOST_BUSY on failure
|
||||
*/
|
||||
static int send_cmd(struct afu *afu, struct afu_cmd *cmd)
|
||||
static int send_cmd_ioarrin(struct afu *afu, struct afu_cmd *cmd)
|
||||
{
|
||||
struct cxlflash_cfg *cfg = afu->parent;
|
||||
struct device *dev = &cfg->dev->dev;
|
||||
@ -273,7 +271,7 @@ static int wait_resp(struct afu *afu, struct afu_cmd *cmd)
|
||||
|
||||
timeout = wait_for_completion_timeout(&cmd->cevent, timeout);
|
||||
if (!timeout) {
|
||||
context_reset(cmd);
|
||||
afu->context_reset(cmd);
|
||||
rc = -1;
|
||||
}
|
||||
|
||||
@ -330,7 +328,7 @@ static int send_tmf(struct afu *afu, struct scsi_cmnd *scp, u64 tmfcmd)
|
||||
SISL_REQ_FLAGS_TMF_CMD);
|
||||
memcpy(cmd->rcb.cdb, &tmfcmd, sizeof(tmfcmd));
|
||||
|
||||
rc = send_cmd(afu, cmd);
|
||||
rc = afu->send_cmd(afu, cmd);
|
||||
if (unlikely(rc)) {
|
||||
spin_lock_irqsave(&cfg->tmf_slock, lock_flags);
|
||||
cfg->tmf_active = false;
|
||||
@ -461,7 +459,7 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp)
|
||||
cmd->rcb.req_flags = req_flags;
|
||||
memcpy(cmd->rcb.cdb, scp->cmnd, sizeof(cmd->rcb.cdb));
|
||||
|
||||
rc = send_cmd(afu, cmd);
|
||||
rc = afu->send_cmd(afu, cmd);
|
||||
if (unlikely(rc))
|
||||
scsi_dma_unmap(scp);
|
||||
out:
|
||||
@ -1631,6 +1629,9 @@ static int init_afu(struct cxlflash_cfg *cfg)
|
||||
goto err2;
|
||||
}
|
||||
|
||||
afu->send_cmd = send_cmd_ioarrin;
|
||||
afu->context_reset = context_reset_ioarrin;
|
||||
|
||||
pr_debug("%s: afu version %s, interface version 0x%llX\n", __func__,
|
||||
afu->version, afu->interface_version);
|
||||
|
||||
@ -1723,7 +1724,7 @@ int cxlflash_afu_sync(struct afu *afu, ctx_hndl_t ctx_hndl_u,
|
||||
*((__be16 *)&cmd->rcb.cdb[2]) = cpu_to_be16(ctx_hndl_u);
|
||||
*((__be32 *)&cmd->rcb.cdb[4]) = cpu_to_be32(res_hndl_u);
|
||||
|
||||
rc = send_cmd(afu, cmd);
|
||||
rc = afu->send_cmd(afu, cmd);
|
||||
if (unlikely(rc))
|
||||
goto out;
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user