[Resend 09/11] mpt3sas: simplify mpt3sas_scsi_issue_tm()
Suganath Prabu S
suganath-prabu.subramani at broadcom.com
Thu Jan 4 04:57:09 PST 2018
From: Hannes Reinecke <hare at suse.de>
Move the check for outstanding commands out of the function
allowing us to simplify the overall code.
Signed-off-by: Hannes Reinecke <hare at suse.com>
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani at broadcom.com>
---
drivers/scsi/mpt3sas/mpt3sas_base.h | 6 +-
drivers/scsi/mpt3sas/mpt3sas_ctl.c | 4 +-
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 106 ++++++++++++-----------------------
3 files changed, 41 insertions(+), 75 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
index 23e9af5..58ac923 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -1444,11 +1444,9 @@ u8 mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
void mpt3sas_scsih_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase);
int mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle,
- uint channel, uint id, uint lun, u8 type, u16 smid_task,
- ulong timeout);
+ u64 lun, u8 type, u16 smid_task, u16 msix_task, ulong timeout);
int mpt3sas_scsih_issue_locked_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle,
- uint channel, uint id, uint lun, u8 type, u16 smid_task,
- ulong timeout);
+ u64 lun, u8 type, u16 smid_task, u16 msix_task, ulong timeout);
void mpt3sas_scsih_set_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle);
void mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle);
diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
index 4f23498..fc74e22 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
@@ -1075,8 +1075,8 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
le16_to_cpu(mpi_request->FunctionDependent1));
mpt3sas_halt_firmware(ioc);
mpt3sas_scsih_issue_locked_tm(ioc,
- le16_to_cpu(mpi_request->FunctionDependent1), 0, 0,
- 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 30);
+ le16_to_cpu(mpi_request->FunctionDependent1), 0,
+ MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 0, 30);
} else
mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
}
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index c6cbadc..e6c8dec 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -1495,25 +1495,24 @@ _scsih_scsi_lookup_get_clear(struct MPT3SAS_ADAPTER *ioc, u16 smid)
* This will search for a scmd pointer in the scsi_lookup array,
* returning the revelent smid. A returned value of zero means invalid.
*/
-static u16
+struct scsiio_tracker *
_scsih_scsi_lookup_find_by_scmd(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd
*scmd)
{
- u16 smid;
- unsigned long flags;
+ struct scsiio_tracker *st = NULL;
+ unsigned long flags;
int i;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
- smid = 0;
for (i = 0; i < ioc->scsiio_depth; i++) {
if (ioc->scsi_lookup[i].scmd == scmd) {
- smid = ioc->scsi_lookup[i].smid;
+ st = &ioc->scsi_lookup[i];
goto out;
}
}
out:
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
- return smid;
+ return st;
}
/**
@@ -2646,32 +2645,30 @@ mpt3sas_scsih_clear_tm_flag(struct MPT3SAS_ADAPTER *ioc, u16 handle)
/**
* mpt3sas_scsih_issue_tm - main routine for sending tm requests
* @ioc: per adapter struct
- * @device_handle: device handle
- * @channel: the channel assigned by the OS
- * @id: the id assigned by the OS
+ * @handle: device handle
* @lun: lun number
* @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in mpi2_init.h)
* @smid_task: smid assigned to the task
+ * @msix_task: MSIX table index supplied by the OS
* @timeout: timeout in seconds
* Context: user
*
* A generic API for sending task management requests to firmware.
*
* The callback index is set inside `ioc->tm_cb_idx`.
+ * The caller is responsible to check for outstanding commands.
*
* Return SUCCESS or FAILED.
*/
int
-mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
- uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
+mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle,
+ u64 lun, u8 type, u16 smid_task, u16 msix_task, ulong timeout)
{
Mpi2SCSITaskManagementRequest_t *mpi_request;
Mpi2SCSITaskManagementReply_t *mpi_reply;
u16 smid = 0;
u32 ioc_state;
- struct scsiio_tracker *scsi_lookup = NULL;
int rc;
- u16 msix_task = 0;
lockdep_assert_held(&ioc->tm_cmds.mutex);
@@ -2703,14 +2700,6 @@ mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
return (!rc) ? SUCCESS : FAILED;
}
- if (type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) {
- scsi_lookup = mpt3sas_get_st_from_smid(ioc, smid_task);
- if (!scsi_lookup)
- return FAILED;
- if (scsi_lookup->cb_idx == 0xFF)
- return SUCCESS;
- }
-
smid = mpt3sas_base_get_smid_hpr(ioc, ioc->tm_cb_idx);
if (!smid) {
pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
@@ -2733,12 +2722,6 @@ mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN);
mpt3sas_scsih_set_tm_flag(ioc, handle);
init_completion(&ioc->tm_cmds.done);
- if ((type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) &&
- scsi_lookup &&
- (scsi_lookup->msix_io < ioc->reply_queue_count))
- msix_task = scsi_lookup->msix_io;
- else
- msix_task = 0;
ioc->put_smid_hi_priority(ioc, smid, msix_task);
wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ);
if (!(ioc->tm_cmds.status & MPT3_CMD_COMPLETE)) {
@@ -2772,25 +2755,7 @@ mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
sizeof(Mpi2SCSITaskManagementRequest_t)/4);
}
}
-
- switch (type) {
- case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
- rc = SUCCESS;
- if (scsi_lookup && scsi_lookup->scmd == NULL)
- break;
- rc = FAILED;
- break;
-
- case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
- case MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
- case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
- case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
- rc = SUCCESS;
- break;
- default:
- rc = FAILED;
- break;
- }
+ rc = SUCCESS;
out:
mpt3sas_scsih_clear_tm_flag(ioc, handle);
@@ -2799,13 +2764,13 @@ out:
}
int mpt3sas_scsih_issue_locked_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle,
- uint channel, uint id, uint lun, u8 type, u16 smid_task, ulong timeout)
+ u64 lun, u8 type, u16 smid_task, u16 msix_task, ulong timeout)
{
int ret;
mutex_lock(&ioc->tm_cmds.mutex);
- ret = mpt3sas_scsih_issue_tm(ioc, handle, channel, id, lun, type,
- smid_task, timeout);
+ ret = mpt3sas_scsih_issue_tm(ioc, handle, lun, type, smid_task,
+ msix_task, timeout);
mutex_unlock(&ioc->tm_cmds.mutex);
return ret;
@@ -2904,7 +2869,7 @@ scsih_abort(struct scsi_cmnd *scmd)
{
struct MPT3SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
struct MPT3SAS_DEVICE *sas_device_priv_data;
- u16 smid;
+ struct scsiio_tracker *st = NULL;
u16 handle;
int r;
@@ -2923,8 +2888,8 @@ scsih_abort(struct scsi_cmnd *scmd)
}
/* search for the command */
- smid = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
- if (!smid) {
+ st = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
+ if (!st) {
scmd->result = DID_RESET << 16;
r = SUCCESS;
goto out;
@@ -2942,10 +2907,12 @@ scsih_abort(struct scsi_cmnd *scmd)
mpt3sas_halt_firmware(ioc);
handle = sas_device_priv_data->sas_target->handle;
- r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
- scmd->device->id, scmd->device->lun,
- MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30);
-
+ r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->lun,
+ MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
+ st->smid, st->msix_io, 30);
+ /* Command must be cleared after abort */
+ if (r == SUCCESS && st->scmd)
+ r = FAILED;
out:
sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
@@ -3001,9 +2968,8 @@ scsih_dev_reset(struct scsi_cmnd *scmd)
goto out;
}
- r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
- scmd->device->id, scmd->device->lun,
- MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 30);
+ r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->lun,
+ MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 0, 30);
/* Check for busy commands after reset */
if (r == SUCCESS && atomic_read(&scmd->device->device_busy))
r = FAILED;
@@ -3065,9 +3031,8 @@ scsih_target_reset(struct scsi_cmnd *scmd)
goto out;
}
- r = mpt3sas_scsih_issue_locked_tm(ioc, handle, scmd->device->channel,
- scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
- 30);
+ r = mpt3sas_scsih_issue_locked_tm(ioc, handle, 0,
+ MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 0, 30);
/* Check for busy commands after reset */
if (r == SUCCESS && atomic_read(&starget->target_busy))
r = FAILED;
@@ -7421,6 +7386,7 @@ _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
{
struct scsi_cmnd *scmd;
struct scsi_device *sdev;
+ struct scsiio_tracker *st;
u16 smid, handle;
u32 lun;
struct MPT3SAS_DEVICE *sas_device_priv_data;
@@ -7462,7 +7428,8 @@ _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
if (ioc->shost_recovery)
goto out;
- scmd = ioc->scsi_lookup[smid - 1].scmd;
+ st = &ioc->scsi_lookup[smid - 1];
+ scmd = st->scmd;
if (!scmd)
continue;
sdev = scmd->device;
@@ -7486,8 +7453,9 @@ _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
goto out;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
- r = mpt3sas_scsih_issue_tm(ioc, handle, 0, 0, lun,
- MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid, 30);
+ r = mpt3sas_scsih_issue_tm(ioc, handle, lun,
+ MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid,
+ st->msix_io, 30);
if (r == FAILED) {
sdev_printk(KERN_WARNING, sdev,
"mpt3sas_scsih_issue_tm: FAILED when sending "
@@ -7526,10 +7494,10 @@ _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
if (ioc->shost_recovery)
goto out_no_lock;
- r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id,
- sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid,
- 30);
- if (r == FAILED) {
+ r = mpt3sas_scsih_issue_tm(ioc, handle, sdev->lun,
+ MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid,
+ st->msix_io, 30);
+ if (r == FAILED || st->scmd) {
sdev_printk(KERN_WARNING, sdev,
"mpt3sas_scsih_issue_tm: ABORT_TASK: FAILED : "
"scmd(%p)\n", scmd);
--
2.5.5
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