[PATCH v2 08/18] scsi: libsas: Add sas_task.tmf

John Garry
2022-02-17T15:49:04Z

Add a pointer to a sas_tmf_task to the sas_task struct, as this will be
used when the common LLDD TMF code is factored out.

Also set it for the LLDDs to store per-sas_task TMF info.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Yihang Li <liyihang6@hisilicon.com>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 16 ++++++---------
drivers/scsi/mvsas/mv_sas.c | 15 ++++++--------
drivers/scsi/pm8001/pm8001_sas.c | 28 ++++++++++-----------------
include/scsi/libsas.h | 1 +
4 files changed, 23 insertions(+), 37 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 88e641143b82..bd40323f7053 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -463,8 +463,7 @@ void hisi_sas_task_deliver(struct hisi_hba *hisi_hba,
spin_unlock(&dq->lock);
}

-static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
- struct sas_tmf_task *tmf)
+static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
{
int n_elem = 0, n_elem_dif = 0, n_elem_req = 0;
struct domain_device *device = task->dev;
@@ -575,8 +574,8 @@ static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
slot->task = task;
slot->port = port;

- slot->tmf = tmf;
- slot->is_internal = tmf;
+ slot->tmf = task->tmf;
+ slot->is_internal = task->tmf;

/* protect task_prep and start_delivery sequence */
hisi_sas_task_deliver(hisi_hba, slot, dq, sas_dev, NULL);
@@ -1106,11 +1105,6 @@ static void hisi_sas_dev_gone(struct domain_device *device)
up(&hisi_hba->sem);
}

-static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
-{
- return hisi_sas_task_exec(task, gfp_flags, NULL);
-}
-
static int hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no,
struct sas_phy_linkrates *r)
{
@@ -1264,7 +1258,9 @@ static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
task->slow_task->timer.expires = jiffies + TASK_TIMEOUT;
add_timer(&task->slow_task->timer);

- res = hisi_sas_task_exec(task, GFP_KERNEL, tmf);
+ task->tmf = tmf;
+
+ res = hisi_sas_queue_command(task, GFP_KERNEL);
if (res) {
del_timer_sync(&task->slow_task->timer);
dev_err(dev, "abort tmf: executing internal task failed: %d\n",
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index 53509996db9f..47fcd8de9ece 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -837,14 +837,14 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf
return rc;
}

-static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
- struct completion *completion, int is_tmf,
- struct sas_tmf_task *tmf)
+int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
{
struct mvs_info *mvi = NULL;
u32 rc = 0;
u32 pass = 0;
unsigned long flags = 0;
+ struct sas_tmf_task *tmf = task->tmf;
+ int is_tmf = !!task->tmf;

mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;

@@ -861,11 +861,6 @@ static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
return rc;
}

-int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
-{
- return mvs_task_exec(task, gfp_flags, NULL, 0, NULL);
-}
-
static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
{
u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
@@ -1297,7 +1292,9 @@ static int mvs_exec_internal_tmf_task(struct domain_device *dev,
task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
add_timer(&task->slow_task->timer);

- res = mvs_task_exec(task, GFP_KERNEL, NULL, 1, tmf);
+ task->tmf = tmf;
+
+ res = mvs_queue_command(task, GFP_KERNEL);

if (res) {
del_timer(&task->slow_task->timer);
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index a93b7f0bb358..a53e4b54154f 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -371,15 +371,14 @@ static int sas_find_local_port_id(struct domain_device *dev)

#define DEV_IS_GONE(pm8001_dev) \
((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)))
+
/**
- * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
+ * pm8001_queue_command - register for upper layer used, all IO commands sent
+ * to HBA are from this interface.
* @task: the task to be execute.
- * @gfp_flags: gfp_flags.
- * @is_tmf: if it is task management task.
- * @tmf: the task management IU
+ * @gfp_flags: gfp_flags
*/
-static int pm8001_task_exec(struct sas_task *task,
- gfp_t gfp_flags, int is_tmf, struct sas_tmf_task *tmf)
+int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
{
struct domain_device *dev = task->dev;
struct pm8001_hba_info *pm8001_ha;
@@ -390,6 +389,8 @@ static int pm8001_task_exec(struct sas_task *task,
u32 tag = 0xdeadbeef, rc = 0, n_elem = 0;
unsigned long flags = 0;
enum sas_protocol task_proto = t->task_proto;
+ struct sas_tmf_task *tmf = task->tmf;
+ int is_tmf = !!task->tmf;

if (!dev->port) {
struct task_status_struct *tsm = &t->task_status;
@@ -504,17 +505,6 @@ static int pm8001_task_exec(struct sas_task *task,
return rc;
}

-/**
- * pm8001_queue_command - register for upper layer used, all IO commands sent
- * to HBA are from this interface.
- * @task: the task to be execute.
- * @gfp_flags: gfp_flags
- */
-int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
-{
- return pm8001_task_exec(task, gfp_flags, 0, NULL);
-}
-
/**
* pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
* @pm8001_ha: our hba card information
@@ -749,7 +739,9 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
add_timer(&task->slow_task->timer);

- res = pm8001_task_exec(task, GFP_KERNEL, 1, tmf);
+ task->tmf = tmf;
+
+ res = pm8001_queue_command(task, GFP_KERNEL);

if (res) {
del_timer(&task->slow_task->timer);
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 7a55853fad7b..9c181ebccfee 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -610,6 +610,7 @@ struct sas_task {
void *lldd_task; /* for use by LLDDs */
void *uldd_task;
struct sas_task_slow *slow_task;
+ struct sas_tmf_task *tmf;
};

struct sas_task_slow {
--
2.26.2