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Message-Id: <20160912152201.877609183@linuxfoundation.org>
Date: Mon, 12 Sep 2016 18:59:39 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Suganath prabu Subramani
<suganath-prabu.subramani@...gotech.com>,
Chaitra P B <chaitra.basappa@...gotech.com>,
Tomas Henzl <thenzl@...hat.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.4 070/192] [PATCH 073/135] mpt3sas: Fix for Asynchronous completion of timedout IO and task abort of timedout IO.
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 03d1fb3a65783979f23bd58b5a0387e6992d9e26 ]
Track msix of each IO and use the same msix for issuing abort to timed
out IO. With this driver will process IO's reply first followed by TM.
Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@...gotech.com>
Signed-off-by: Chaitra P B <chaitra.basappa@...gotech.com>
Reviewed-by: Tomas Henzl <thenzl@...hat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 20 +++++++++++---------
drivers/scsi/mpt3sas/mpt3sas_base.h | 5 ++++-
drivers/scsi/mpt3sas/mpt3sas_ctl.c | 2 +-
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 12 +++++++++---
4 files changed, 25 insertions(+), 14 deletions(-)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -2242,6 +2242,12 @@ mpt3sas_base_get_reply_virt_addr(struct
return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
}
+static inline u8
+_base_get_msix_index(struct MPT3SAS_ADAPTER *ioc)
+{
+ return ioc->cpu_msix_table[raw_smp_processor_id()];
+}
+
/**
* mpt3sas_base_get_smid - obtain a free smid from internal queue
* @ioc: per adapter object
@@ -2302,6 +2308,7 @@ mpt3sas_base_get_smid_scsiio(struct MPT3
request->scmd = scmd;
request->cb_idx = cb_idx;
smid = request->smid;
+ request->msix_io = _base_get_msix_index(ioc);
list_del(&request->tracker_list);
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return smid;
@@ -2424,12 +2431,6 @@ _base_writeq(__u64 b, volatile void __io
}
#endif
-static inline u8
-_base_get_msix_index(struct MPT3SAS_ADAPTER *ioc)
-{
- return ioc->cpu_msix_table[raw_smp_processor_id()];
-}
-
/**
* mpt3sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
* @ioc: per adapter object
@@ -2483,18 +2484,19 @@ mpt3sas_base_put_smid_fast_path(struct M
* mpt3sas_base_put_smid_hi_priority - send Task Managment request to firmware
* @ioc: per adapter object
* @smid: system request message index
- *
+ * @msix_task: msix_task will be same as msix of IO incase of task abort else 0.
* Return nothing.
*/
void
-mpt3sas_base_put_smid_hi_priority(struct MPT3SAS_ADAPTER *ioc, u16 smid)
+mpt3sas_base_put_smid_hi_priority(struct MPT3SAS_ADAPTER *ioc, u16 smid,
+ u16 msix_task)
{
Mpi2RequestDescriptorUnion_t descriptor;
u64 *request = (u64 *)&descriptor;
descriptor.HighPriority.RequestFlags =
MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
- descriptor.HighPriority.MSIxIndex = 0;
+ descriptor.HighPriority.MSIxIndex = msix_task;
descriptor.HighPriority.SMID = cpu_to_le16(smid);
descriptor.HighPriority.LMID = 0;
descriptor.HighPriority.Reserved1 = 0;
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -643,6 +643,7 @@ struct chain_tracker {
* @cb_idx: callback index
* @direct_io: To indicate whether I/O is direct (WARPDRIVE)
* @tracker_list: list of free request (ioc->free_list)
+ * @msix_io: IO's msix
*/
struct scsiio_tracker {
u16 smid;
@@ -651,6 +652,7 @@ struct scsiio_tracker {
u8 direct_io;
struct list_head chain_list;
struct list_head tracker_list;
+ u16 msix_io;
};
/**
@@ -1213,7 +1215,8 @@ void mpt3sas_base_put_smid_scsi_io(struc
u16 handle);
void mpt3sas_base_put_smid_fast_path(struct MPT3SAS_ADAPTER *ioc, u16 smid,
u16 handle);
-void mpt3sas_base_put_smid_hi_priority(struct MPT3SAS_ADAPTER *ioc, u16 smid);
+void mpt3sas_base_put_smid_hi_priority(struct MPT3SAS_ADAPTER *ioc,
+ u16 smid, u16 msix_task);
void mpt3sas_base_put_smid_default(struct MPT3SAS_ADAPTER *ioc, u16 smid);
void mpt3sas_base_initialize_callback_handler(void);
u8 mpt3sas_base_register_callback_handler(MPT_CALLBACK cb_func);
--- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
@@ -817,7 +817,7 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPT
tm_request->DevHandle));
ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
data_in_dma, data_in_sz);
- mpt3sas_base_put_smid_hi_priority(ioc, smid);
+ mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
break;
}
case MPI2_FUNCTION_SMP_PASSTHROUGH:
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -2193,6 +2193,7 @@ mpt3sas_scsih_issue_tm(struct MPT3SAS_AD
unsigned long timeleft;
struct scsiio_tracker *scsi_lookup = NULL;
int rc;
+ u16 msix_task = 0;
if (m_type == TM_MUTEX_ON)
mutex_lock(&ioc->tm_cmds.mutex);
@@ -2256,7 +2257,12 @@ mpt3sas_scsih_issue_tm(struct MPT3SAS_AD
int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN);
mpt3sas_scsih_set_tm_flag(ioc, handle);
init_completion(&ioc->tm_cmds.done);
- mpt3sas_base_put_smid_hi_priority(ioc, smid);
+ if ((type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) &&
+ (scsi_lookup->msix_io < ioc->reply_queue_count))
+ msix_task = scsi_lookup->msix_io;
+ else
+ msix_task = 0;
+ mpt3sas_base_put_smid_hi_priority(ioc, smid, msix_task);
timeleft = wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ);
if (!(ioc->tm_cmds.status & MPT3_CMD_COMPLETE)) {
pr_err(MPT3SAS_FMT "%s: timeout\n",
@@ -3151,7 +3157,7 @@ _scsih_tm_tr_send(struct MPT3SAS_ADAPTER
mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
mpi_request->DevHandle = cpu_to_le16(handle);
mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
- mpt3sas_base_put_smid_hi_priority(ioc, smid);
+ mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
mpt3sas_trigger_master(ioc, MASTER_TRIGGER_DEVICE_REMOVAL);
out:
@@ -3332,7 +3338,7 @@ _scsih_tm_tr_volume_send(struct MPT3SAS_
mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
mpi_request->DevHandle = cpu_to_le16(handle);
mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
- mpt3sas_base_put_smid_hi_priority(ioc, smid);
+ mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
}
/**
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