From: John Garry <john.garry@huawei.com>
Date: Thu, 17 Feb 2022 23:42:34 +0800
Subject: scsi: libsas: Move SMP task handlers to core
Git-commit: 4aef43b25df2bc81bebea1aa335a0696ab3a2275
Patch-mainline: v5.18-rc1
References: jsc#PED-1559
Move the SMP task handlers to the core host code as they will be re-used
for executing internal abort and TMF tasks.
[lduncan: refrehsed to apply cleanly]
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>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/scsi/libsas/sas_expander.c | 24 ++----------------------
drivers/scsi/libsas/sas_internal.h | 3 +++
drivers/scsi/libsas/sas_scsi_host.c | 24 ++++++++++++++++++++++++
3 files changed, 29 insertions(+), 22 deletions(-)
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -28,26 +28,6 @@ static int sas_disable_routing(struct do
/* ---------- 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 do
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);
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -95,6 +95,9 @@ void sas_destruct_devices(struct asd_sas
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
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -885,6 +885,30 @@ int sas_bios_param(struct scsi_device *s
return 0;
}
+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.