[PATCH 3/4] scsi: pm8001: Use libsas internal abort support

John Garry
2022-03-03T12:24:54Z

New special handling is added for SAS_PROTOCOL_INTERNAL_ABORT proto so that
we may use the common queue command API.

Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/pm8001/pm8001_hwi.c | 27 +++--
drivers/scsi/pm8001/pm8001_hwi.h | 5 -
drivers/scsi/pm8001/pm8001_sas.c | 186 +++++++++++--------------------
drivers/scsi/pm8001/pm8001_sas.h | 6 +-
drivers/scsi/pm8001/pm80xx_hwi.h | 5 -
5 files changed, 82 insertions(+), 147 deletions(-)

diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index 048ff41852c9..84402a9dddbf 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -4477,22 +4477,25 @@ pm8001_chip_isr(struct pm8001_hba_info *pm8001_ha, u8 vec)
}

static int send_task_abort(struct pm8001_hba_info *pm8001_ha, u32 opc,
- u32 dev_id, u8 flag, u32 task_tag, u32 cmd_tag)
+ u32 dev_id, enum sas_internal_abort type, u32 task_tag, u32 cmd_tag)
{
struct task_abort_req task_abort;

memset(&task_abort, 0, sizeof(task_abort));
- if (ABORT_SINGLE == (flag & ABORT_MASK)) {
+ if (type == SAS_INTERNAL_ABORT_SINGLE) {
task_abort.abort_all = 0;
task_abort.device_id = cpu_to_le32(dev_id);
task_abort.tag_to_abort = cpu_to_le32(task_tag);
- task_abort.tag = cpu_to_le32(cmd_tag);
- } else if (ABORT_ALL == (flag & ABORT_MASK)) {
+ } else if (type == SAS_INTERNAL_ABORT_DEV) {
task_abort.abort_all = cpu_to_le32(1);
task_abort.device_id = cpu_to_le32(dev_id);
- task_abort.tag = cpu_to_le32(cmd_tag);
+ } else {
+ pm8001_dbg(pm8001_ha, EH, "unknown type (%d)\n", type);
+ return -EIO;
}

+ task_abort.tag = cpu_to_le32(cmd_tag);
+
return pm8001_mpi_build_cmd(pm8001_ha, 0, opc, &task_abort,
sizeof(task_abort), 0);
}
@@ -4501,12 +4504,16 @@ static int send_task_abort(struct pm8001_hba_info *pm8001_ha, u32 opc,
* pm8001_chip_abort_task - SAS abort task when error or exception happened.
*/
int pm8001_chip_abort_task(struct pm8001_hba_info *pm8001_ha,
- struct pm8001_device *pm8001_dev, u8 flag, u32 task_tag, u32 cmd_tag)
+ struct pm8001_ccb_info *ccb)
{
- u32 opc, device_id;
+ struct sas_task *task = ccb->task;
+ struct sas_internal_abort_task *abort = &task->abort_task;
+ struct pm8001_device *pm8001_dev = ccb->device;
int rc = TMF_RESP_FUNC_FAILED;
+ u32 opc, device_id;
+
pm8001_dbg(pm8001_ha, EH, "cmd_tag = %x, abort task tag = 0x%x\n",
- cmd_tag, task_tag);
+ ccb->ccb_tag, abort->tag);
if (pm8001_dev->dev_type == SAS_END_DEVICE)
opc = OPC_INB_SSP_ABORT;
else if (pm8001_dev->dev_type == SAS_SATA_DEV)
@@ -4514,8 +4521,8 @@ int pm8001_chip_abort_task(struct pm8001_hba_info *pm8001_ha,
else
opc = OPC_INB_SMP_ABORT;/* SMP */
device_id = pm8001_dev->device_id;
- rc = send_task_abort(pm8001_ha, opc, device_id, flag,
- task_tag, cmd_tag);
+ rc = send_task_abort(pm8001_ha, opc, device_id, abort->type,
+ abort->tag, ccb->ccb_tag);
if (rc != TMF_RESP_FUNC_COMPLETE)
pm8001_dbg(pm8001_ha, EH, "rc= %d\n", rc);
return rc;
diff --git a/drivers/scsi/pm8001/pm8001_hwi.h b/drivers/scsi/pm8001/pm8001_hwi.h
index d1f3aa93325b..961d0465b923 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.h
+++ b/drivers/scsi/pm8001/pm8001_hwi.h
@@ -434,11 +434,6 @@ struct task_abort_req {
u32 reserved[11];
} __attribute__((packed, aligned(4)));

-/* These flags used for SSP SMP & SATA Abort */
-#define ABORT_MASK 0x3
-#define ABORT_SINGLE 0x0
-#define ABORT_ALL 0x1
-
/**
* brief the data structure of SSP SATA SMP Abort Response
* use to describe SSP SMP & SATA Abort Response ( 64 bytes)
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index ac9c40c95070..d1224674173e 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -324,6 +324,18 @@ static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
}

+/**
+ * pm8001_task_prep_internal_abort - the dispatcher function, prepare data
+ * for internal abort task
+ * @pm8001_ha: our hba card information
+ * @ccb: the ccb which attached to sata task
+ */
+static int pm8001_task_prep_internal_abort(struct pm8001_hba_info *pm8001_ha,
+ struct pm8001_ccb_info *ccb)
+{
+ return PM8001_CHIP_DISP->task_abort(pm8001_ha, ccb);
+}
+
/**
* pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
* @pm8001_ha: our hba card information
@@ -367,6 +379,43 @@ 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)))

+
+static int pm8001_deliver_command(struct pm8001_hba_info *pm8001_ha,
+ struct pm8001_ccb_info *ccb)
+{
+ struct sas_task *task = ccb->task;
+ enum sas_protocol task_proto = task->task_proto;
+ struct sas_tmf_task *tmf = task->tmf;
+ int is_tmf = !!tmf;
+ int rc;
+
+ switch (task_proto) {
+ case SAS_PROTOCOL_SMP:
+ rc = pm8001_task_prep_smp(pm8001_ha, ccb);
+ break;
+ case SAS_PROTOCOL_SSP:
+ if (is_tmf)
+ rc = pm8001_task_prep_ssp_tm(pm8001_ha, ccb, tmf);
+ else
+ rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
+ break;
+ case SAS_PROTOCOL_SATA:
+ case SAS_PROTOCOL_STP:
+ rc = pm8001_task_prep_ata(pm8001_ha, ccb);
+ break;
+ case SAS_PROTOCOL_INTERNAL_ABORT:
+ rc = pm8001_task_prep_internal_abort(pm8001_ha, ccb);
+ break;
+ default:
+ dev_err(pm8001_ha->dev, "unknown sas_task proto: 0x%x\n",
+ task_proto);
+ rc = -EINVAL;
+ break;
+ }
+
+ return rc;
+}
+
/**
* pm8001_queue_command - register for upper layer used, all IO commands sent
* to HBA are from this interface.
@@ -379,16 +428,15 @@ int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
enum sas_protocol task_proto = task->task_proto;
struct domain_device *dev = task->dev;
struct pm8001_device *pm8001_dev = dev->lldd_dev;
+ bool internal_abort = sas_is_internal_abort(task);
struct pm8001_hba_info *pm8001_ha;
struct pm8001_port *port = NULL;
struct pm8001_ccb_info *ccb;
- struct sas_tmf_task *tmf = task->tmf;
- int is_tmf = !!task->tmf;
unsigned long flags;
u32 n_elem = 0;
int rc = 0;

- if (!dev->port) {
+ if (!internal_abort && !dev->port) {
ts->resp = SAS_TASK_UNDELIVERED;
ts->stat = SAS_PHY_DOWN;
if (dev->dev_type != SAS_SATA_DEV)
@@ -410,7 +458,8 @@ int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
pm8001_dev = dev->lldd_dev;
port = &pm8001_ha->port[sas_find_local_port_id(dev)];

- if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) {
+ if (!internal_abort && (DEV_IS_GONE(pm8001_dev) ||
+ !port->port_attached)) {
ts->resp = SAS_TASK_UNDELIVERED;
ts->stat = SAS_PHY_DOWN;
if (sas_protocol_ata(task_proto)) {
@@ -448,27 +497,7 @@ int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)

atomic_inc(&pm8001_dev->running_req);

- switch (task_proto) {
- case SAS_PROTOCOL_SMP:
- rc = pm8001_task_prep_smp(pm8001_ha, ccb);
- break;
- case SAS_PROTOCOL_SSP:
- if (is_tmf)
- rc = pm8001_task_prep_ssp_tm(pm8001_ha, ccb, tmf);
- else
- rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
- break;
- case SAS_PROTOCOL_SATA:
- case SAS_PROTOCOL_STP:
- rc = pm8001_task_prep_ata(pm8001_ha, ccb);
- break;
- default:
- dev_printk(KERN_ERR, pm8001_ha->dev,
- "unknown sas_task proto: 0x%x\n", task_proto);
- rc = -EINVAL;
- break;
- }
-
+ rc = pm8001_deliver_command(pm8001_ha, ccb);
if (rc) {
atomic_dec(&pm8001_dev->running_req);
if (!sas_protocol_ata(task_proto) && n_elem)
@@ -668,87 +697,7 @@ void pm8001_task_done(struct sas_task *task)
complete(&task->slow_task->completion);
}

-static void pm8001_tmf_timedout(struct timer_list *t)
-{
- struct sas_task_slow *slow = from_timer(slow, t, timer);
- struct sas_task *task = slow->task;
- unsigned long flags;
-
- spin_lock_irqsave(&task->task_state_lock, flags);
- if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
- task->task_state_flags |= SAS_TASK_STATE_ABORTED;
- complete(&task->slow_task->completion);
- }
- spin_unlock_irqrestore(&task->task_state_lock, flags);
-}
-
#define PM8001_TASK_TIMEOUT 20
-static int
-pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
- struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
- u32 task_tag)
-{
- int res, retry;
- struct pm8001_ccb_info *ccb;
- struct sas_task *task = NULL;
-
- for (retry = 0; retry < 3; retry++) {
- task = sas_alloc_slow_task(GFP_KERNEL);
- if (!task)
- return -ENOMEM;
-
- task->dev = dev;
- task->task_proto = dev->tproto;
- task->task_done = pm8001_task_done;
- task->slow_task->timer.function = pm8001_tmf_timedout;
- task->slow_task->timer.expires =
- jiffies + PM8001_TASK_TIMEOUT * HZ;
- add_timer(&task->slow_task->timer);
-
- ccb = pm8001_ccb_alloc(pm8001_ha, pm8001_dev, task);
- if (!ccb) {
- res = -SAS_QUEUE_FULL;
- break;
- }
-
- res = PM8001_CHIP_DISP->task_abort(pm8001_ha, pm8001_dev, flag,
- task_tag, ccb->ccb_tag);
- if (res) {
- del_timer(&task->slow_task->timer);
- pm8001_dbg(pm8001_ha, FAIL,
- "Executing internal task failed\n");
- pm8001_ccb_free(pm8001_ha, ccb);
- break;
- }
-
- wait_for_completion(&task->slow_task->completion);
- res = TMF_RESP_FUNC_FAILED;
-
- /* Even TMF timed out, return direct. */
- if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
- pm8001_dbg(pm8001_ha, FAIL, "TMF task timeout.\n");
- break;
- }
-
- if (task->task_status.resp == SAS_TASK_COMPLETE &&
- task->task_status.stat == SAS_SAM_STAT_GOOD) {
- res = TMF_RESP_FUNC_COMPLETE;
- break;
- }
-
- pm8001_dbg(pm8001_ha, EH,
- " Task to dev %016llx response: 0x%x status 0x%x\n",
- SAS_ADDR(dev->sas_addr),
- task->task_status.resp,
- task->task_status.stat);
- sas_free_task(task);
- task = NULL;
- }
-
- BUG_ON(retry == 3 && task != NULL);
- sas_free_task(task);
- return res;
-}

/**
* pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
@@ -769,8 +718,7 @@ static void pm8001_dev_gone_notify(struct domain_device *dev)
pm8001_dev->device_id, pm8001_dev->dev_type);
if (atomic_read(&pm8001_dev->running_req)) {
spin_unlock_irqrestore(&pm8001_ha->lock, flags);
- pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
- dev, 1, 0);
+ sas_execute_internal_abort_dev(dev, 0, NULL);
while (atomic_read(&pm8001_dev->running_req))
msleep(20);
spin_lock_irqsave(&pm8001_ha->lock, flags);
@@ -893,8 +841,7 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev)
goto out;
}
msleep(2000);
- rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
- dev, 1, 0);
+ rc = sas_execute_internal_abort_dev(dev, 0, NULL);
if (rc) {
pm8001_dbg(pm8001_ha, EH, "task abort failed %x\n"
"with rc %d\n", pm8001_dev->device_id, rc);
@@ -939,8 +886,7 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
goto out;
}
/* send internal ssp/sata/smp abort command to FW */
- rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
- dev, 1, 0);
+ sas_execute_internal_abort_dev(dev, 0, NULL);
msleep(100);

/* deregister the target device */
@@ -955,8 +901,7 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
wait_for_completion(&completion_setstate);
} else {
/* send internal ssp/sata/smp abort command to FW */
- rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
- dev, 1, 0);
+ sas_execute_internal_abort_dev(dev, 0, NULL);
msleep(100);

/* deregister the target device */
@@ -983,8 +928,7 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
DECLARE_COMPLETION_ONSTACK(completion_setstate);
if (dev_is_sata(dev)) {
struct sas_phy *phy = sas_get_local_phy(dev);
- rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
- dev, 1, 0);
+ sas_execute_internal_abort_dev(dev, 0, NULL);
rc = sas_phy_reset(phy, 1);
sas_put_local_phy(phy);
pm8001_dev->setds_completion = &completion_setstate;
@@ -1084,8 +1028,7 @@ int pm8001_abort_task(struct sas_task *task)
spin_unlock_irqrestore(&task->task_state_lock, flags);
if (task->task_proto & SAS_PROTOCOL_SSP) {
rc = sas_abort_task(task, tag);
- pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
- pm8001_dev->sas_device, 0, tag);
+ sas_execute_internal_abort_single(dev, tag, 0, NULL);
} else if (task->task_proto & SAS_PROTOCOL_SATA ||
task->task_proto & SAS_PROTOCOL_STP) {
if (pm8001_ha->chip_id == chip_8006) {
@@ -1158,8 +1101,7 @@ int pm8001_abort_task(struct sas_task *task)
* is removed from the ccb. on success the caller is
* going to free the task.
*/
- ret = pm8001_exec_internal_task_abort(pm8001_ha,
- pm8001_dev, pm8001_dev->sas_device, 1, tag);
+ ret = sas_execute_internal_abort_dev(dev, 0, NULL);
if (ret)
goto out;
ret = wait_for_completion_timeout(
@@ -1175,14 +1117,12 @@ int pm8001_abort_task(struct sas_task *task)
pm8001_dev, DS_OPERATIONAL);
wait_for_completion(&completion);
} else {
- rc = pm8001_exec_internal_task_abort(pm8001_ha,
- pm8001_dev, pm8001_dev->sas_device, 0, tag);
+ ret = sas_execute_internal_abort_single(dev, tag, 0, NULL);
}
rc = TMF_RESP_FUNC_COMPLETE;
} else if (task->task_proto & SAS_PROTOCOL_SMP) {
/* SMP */
- rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
- pm8001_dev->sas_device, 0, tag);
+ rc = sas_execute_internal_abort_single(dev, tag, 0, NULL);

}
out:
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index d522bd0bb46b..060ab680a7ed 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -196,8 +196,7 @@ struct pm8001_dispatch {
int (*phy_ctl_req)(struct pm8001_hba_info *pm8001_ha,
u32 phy_id, u32 phy_op);
int (*task_abort)(struct pm8001_hba_info *pm8001_ha,
- struct pm8001_device *pm8001_dev, u8 flag, u32 task_tag,
- u32 cmd_tag);
+ struct pm8001_ccb_info *ccb);
int (*ssp_tm_req)(struct pm8001_hba_info *pm8001_ha,
struct pm8001_ccb_info *ccb, struct sas_tmf_task *tmf);
int (*get_nvmd_req)(struct pm8001_hba_info *pm8001_ha, void *payload);
@@ -683,8 +682,7 @@ int pm8001_chip_ssp_tm_req(struct pm8001_hba_info *pm8001_ha,
struct pm8001_ccb_info *ccb,
struct sas_tmf_task *tmf);
int pm8001_chip_abort_task(struct pm8001_hba_info *pm8001_ha,
- struct pm8001_device *pm8001_dev,
- u8 flag, u32 task_tag, u32 cmd_tag);
+ struct pm8001_ccb_info *ccb);
int pm8001_chip_dereg_dev_req(struct pm8001_hba_info *pm8001_ha, u32 device_id);
void pm8001_chip_make_sg(struct scatterlist *scatter, int nr, void *prd);
void pm8001_work_fn(struct work_struct *work);
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.h b/drivers/scsi/pm8001/pm80xx_hwi.h
index b9d9d113809b..acf6e3005b84 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.h
+++ b/drivers/scsi/pm8001/pm80xx_hwi.h
@@ -672,11 +672,6 @@ struct task_abort_req {
u32 reserved[27];
} __attribute__((packed, aligned(4)));

-/* These flags used for SSP SMP & SATA Abort */
-#define ABORT_MASK 0x3
-#define ABORT_SINGLE 0x0
-#define ABORT_ALL 0x1
-
/**
* brief the data structure of SSP SATA SMP Abort Response
* use to describe SSP SMP & SATA Abort Response ( 64 bytes)
--
2.26.2