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scsi: libsas: Move SMP task handlers to core

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Move the SMP task handlers to the core host code as they will be re-used
for executing internal abort and TMF tasks.

Link: https://lore.kernel.org/r/1645112566-115804-7-git-send-email-john.garry@huawei.com
Tested-by: Yihang Li <liyihang6@hisilicon.com>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2022-02-17 23:42:34 +08:00 committed by Martin K. Petersen
parent da19eaba6e
commit 4aef43b25d
3 changed files with 29 additions and 22 deletions
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24
drivers/scsi/libsas/sas_expander.c
View File

@ -28,26 +28,6 @@ static int sas_disable_routing(struct domain_device *dev, u8 *sas_addr);
/* ---------- SMP task management ---------- */
static void smp_task_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);
}
static void smp_task_done(struct sas_task *task)
{
del_timer(&task->slow_task->timer);
complete(&task->slow_task->completion);
}
/* Give it some long enough timeout. In seconds. */
#define SMP_TIMEOUT 10
@ -78,9 +58,9 @@ static int smp_execute_task_sg(struct domain_device *dev,
task->smp_task.smp_req = *req;
task->smp_task.smp_resp = *resp;
task->task_done = smp_task_done;
task->task_done = sas_task_internal_done;
task->slow_task->timer.function = smp_task_timedout;
task->slow_task->timer.function = sas_task_internal_timedout;
task->slow_task->timer.expires = jiffies + SMP_TIMEOUT*HZ;
add_timer(&task->slow_task->timer);

3
drivers/scsi/libsas/sas_internal.h
View File

@ -95,6 +95,9 @@ void sas_destruct_devices(struct asd_sas_port *port);
extern const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS];
extern const work_func_t sas_port_event_fns[PORT_NUM_EVENTS];
void sas_task_internal_done(struct sas_task *task);
void sas_task_internal_timedout(struct timer_list *t);
#ifdef CONFIG_SCSI_SAS_HOST_SMP
extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost);
#else

24
drivers/scsi/libsas/sas_scsi_host.c
View File

@ -893,6 +893,30 @@ int sas_bios_param(struct scsi_device *scsi_dev,
}
EXPORT_SYMBOL_GPL(sas_bios_param);
void sas_task_internal_done(struct sas_task *task)
{
del_timer(&task->slow_task->timer);
complete(&task->slow_task->completion);
}
void sas_task_internal_timedout(struct timer_list *t)
{
struct sas_task_slow *slow = from_timer(slow, t, timer);
struct sas_task *task = slow->task;
bool is_completed = true;
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;
is_completed = false;
}
spin_unlock_irqrestore(&task->task_state_lock, flags);
if (!is_completed)
complete(&task->slow_task->completion);
}
/*
* Tell an upper layer that it needs to initiate an abort for a given task.
* This should only ever be called by an LLDD.