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path: root/drivers/scsi/cxlflash
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Diffstat (limited to 'drivers/scsi/cxlflash')
-rw-r--r--drivers/scsi/cxlflash/common.h2
-rw-r--r--drivers/scsi/cxlflash/main.c9
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/cxlflash/common.h b/drivers/scsi/cxlflash/common.h
index e9b61087b72b..3eaa3be43d24 100644
--- a/drivers/scsi/cxlflash/common.h
+++ b/drivers/scsi/cxlflash/common.h
@@ -158,6 +158,7 @@ struct afu_cmd {
u32 hwq_index;
u8 cmd_tmf:1;
+ struct list_head list; /* Pending commands link */
/* As per the SISLITE spec the IOARCB EA has to be 16-byte aligned.
* However for performance reasons the IOARCB/IOASA should be
@@ -193,6 +194,7 @@ struct hwq {
struct sisl_ctrl_map __iomem *ctrl_map; /* MC control map */
ctx_hndl_t ctx_hndl; /* master's context handle */
u32 index; /* Index of this hwq */
+ struct list_head pending_cmds; /* Commands pending completion */
atomic_t hsq_credits;
spinlock_t hsq_slock; /* Hardware send queue lock */
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 20c2c5e111b4..1446fabe4cf6 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -162,8 +162,13 @@ static void cmd_complete(struct afu_cmd *cmd)
struct afu *afu = cmd->parent;
struct cxlflash_cfg *cfg = afu->parent;
struct device *dev = &cfg->dev->dev;
+ struct hwq *hwq = get_hwq(afu, cmd->hwq_index);
bool cmd_is_tmf;
+ spin_lock_irqsave(&hwq->hsq_slock, lock_flags);
+ list_del(&cmd->list);
+ spin_unlock_irqrestore(&hwq->hsq_slock, lock_flags);
+
if (cmd->scp) {
scp = cmd->scp;
if (unlikely(cmd->sa.ioasc))
@@ -279,6 +284,7 @@ static int send_cmd_ioarrin(struct afu *afu, struct afu_cmd *cmd)
hwq->room = room - 1;
}
+ list_add(&cmd->list, &hwq->pending_cmds);
writeq_be((u64)&cmd->rcb, &hwq->host_map->ioarrin);
out:
spin_unlock_irqrestore(&hwq->hsq_slock, lock_flags);
@@ -319,6 +325,8 @@ static int send_cmd_sq(struct afu *afu, struct afu_cmd *cmd)
hwq->hsq_curr++;
else
hwq->hsq_curr = hwq->hsq_start;
+
+ list_add(&cmd->list, &hwq->pending_cmds);
writeq_be((u64)hwq->hsq_curr, &hwq->host_map->sq_tail);
spin_unlock_irqrestore(&hwq->hsq_slock, lock_flags);
@@ -1840,6 +1848,7 @@ static int init_mc(struct cxlflash_cfg *cfg, u32 index)
hwq->afu = cfg->afu;
hwq->index = index;
+ INIT_LIST_HEAD(&hwq->pending_cmds);
if (index == PRIMARY_HWQ)
ctx = cxl_get_context(cfg->dev);