summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorSuganath Prabu S <suganath-prabu.subramani@broadcom.com>2019-05-31 08:14:39 -0400
committerMartin K. Petersen <martin.petersen@oracle.com>2019-06-18 19:46:26 -0400
commit998c3001d31a278c9fb5cf68a2b0285dc7c76cdd (patch)
tree5c5f0d51cafb1819be0a2991d344f1a445e78f8e /drivers
parent5dd48a555a40431787e4e780ec6b3a7632250853 (diff)
scsi: mpt3sas: save and use MSI-X index for posting RD
In the IO submission path _base_get_msix_index is called twice. Initially while getting the smid and subsequently while posting the request descriptor (RD). Refactor code to query msix index only while posting the request descriptor. Save determined msix index in msix_io field. Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/mpt3sas/mpt3sas_base.c42
-rw-r--r--drivers/scsi/mpt3sas/mpt3sas_base.h1
-rw-r--r--drivers/scsi/mpt3sas/mpt3sas_scsih.c1
3 files changed, 35 insertions, 9 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 74cb060e594f..8779d2b04fad 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -3399,8 +3399,8 @@ mpt3sas_base_get_smid_scsiio(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx,
smid = tag + 1;
request->cb_idx = cb_idx;
- request->msix_io = _base_get_msix_index(ioc, NULL);
request->smid = smid;
+ request->scmd = scmd;
INIT_LIST_HEAD(&request->chain_list);
return smid;
}
@@ -3454,6 +3454,7 @@ void mpt3sas_base_clear_st(struct MPT3SAS_ADAPTER *ioc,
return;
st->cb_idx = 0xFF;
st->direct_io = 0;
+ st->scmd = NULL;
atomic_set(&ioc->chain_lookup[st->smid - 1].chain_offset, 0);
st->smid = 0;
}
@@ -3553,6 +3554,29 @@ _base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock)
#endif
/**
+ * _base_set_and_get_msix_index - get the msix index and assign to msix_io
+ * variable of scsi tracker
+ * @ioc: per adapter object
+ * @smid: system request message index
+ *
+ * returns msix index.
+ */
+static u8
+_base_set_and_get_msix_index(struct MPT3SAS_ADAPTER *ioc, u16 smid)
+{
+ struct scsiio_tracker *st = NULL;
+
+ if (smid < ioc->hi_priority_smid)
+ st = _get_st_from_smid(ioc, smid);
+
+ if (st == NULL)
+ return _base_get_msix_index(ioc, NULL);
+
+ st->msix_io = ioc->get_msix_index_for_smlio(ioc, st->scmd);
+ return st->msix_io;
+}
+
+/**
* _base_put_smid_mpi_ep_scsi_io - send SCSI_IO request to firmware
* @ioc: per adapter object
* @smid: system request message index
@@ -3573,7 +3597,7 @@ _base_put_smid_mpi_ep_scsi_io(struct MPT3SAS_ADAPTER *ioc,
_base_clone_mpi_to_sys_mem(mpi_req_iomem, (void *)mfp,
ioc->request_sz);
descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
- descriptor.SCSIIO.MSIxIndex = _base_get_msix_index(ioc, NULL);
+ descriptor.SCSIIO.MSIxIndex = _base_set_and_get_msix_index(ioc, smid);
descriptor.SCSIIO.SMID = cpu_to_le16(smid);
descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
descriptor.SCSIIO.LMID = 0;
@@ -3595,7 +3619,7 @@ _base_put_smid_scsi_io(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 handle)
descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
- descriptor.SCSIIO.MSIxIndex = _base_get_msix_index(ioc, NULL);
+ descriptor.SCSIIO.MSIxIndex = _base_set_and_get_msix_index(ioc, smid);
descriptor.SCSIIO.SMID = cpu_to_le16(smid);
descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
descriptor.SCSIIO.LMID = 0;
@@ -3618,7 +3642,7 @@ _base_put_smid_fast_path(struct MPT3SAS_ADAPTER *ioc, u16 smid,
descriptor.SCSIIO.RequestFlags =
MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO;
- descriptor.SCSIIO.MSIxIndex = _base_get_msix_index(ioc, NULL);
+ descriptor.SCSIIO.MSIxIndex = _base_set_and_get_msix_index(ioc, smid);
descriptor.SCSIIO.SMID = cpu_to_le16(smid);
descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
descriptor.SCSIIO.LMID = 0;
@@ -3682,7 +3706,7 @@ mpt3sas_base_put_smid_nvme_encap(struct MPT3SAS_ADAPTER *ioc, u16 smid)
descriptor.Default.RequestFlags =
MPI26_REQ_DESCRIPT_FLAGS_PCIE_ENCAPSULATED;
- descriptor.Default.MSIxIndex = _base_get_msix_index(ioc, NULL);
+ descriptor.Default.MSIxIndex = _base_set_and_get_msix_index(ioc, smid);
descriptor.Default.SMID = cpu_to_le16(smid);
descriptor.Default.LMID = 0;
descriptor.Default.DescriptorTypeDependent = 0;
@@ -3714,7 +3738,7 @@ _base_put_smid_default(struct MPT3SAS_ADAPTER *ioc, u16 smid)
}
request = (u64 *)&descriptor;
descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
- descriptor.Default.MSIxIndex = _base_get_msix_index(ioc, NULL);
+ descriptor.Default.MSIxIndex = _base_set_and_get_msix_index(ioc, smid);
descriptor.Default.SMID = cpu_to_le16(smid);
descriptor.Default.LMID = 0;
descriptor.Default.DescriptorTypeDependent = 0;
@@ -3744,7 +3768,7 @@ _base_put_smid_scsi_io_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid,
u32 *request = (u32 *)&descriptor;
descriptor.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
- descriptor.MSIxIndex = _base_get_msix_index(ioc, NULL);
+ descriptor.MSIxIndex = _base_set_and_get_msix_index(ioc, smid);
descriptor.SMID = cpu_to_le16(smid);
writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost);
@@ -3766,7 +3790,7 @@ _base_put_smid_fast_path_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid,
u32 *request = (u32 *)&descriptor;
descriptor.RequestFlags = MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO;
- descriptor.MSIxIndex = _base_get_msix_index(ioc, NULL);
+ descriptor.MSIxIndex = _base_set_and_get_msix_index(ioc, smid);
descriptor.SMID = cpu_to_le16(smid);
writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost);
@@ -3810,7 +3834,7 @@ _base_put_smid_default_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid)
u32 *request = (u32 *)&descriptor;
descriptor.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
- descriptor.MSIxIndex = _base_get_msix_index(ioc, NULL);
+ descriptor.MSIxIndex = _base_set_and_get_msix_index(ioc, smid);
descriptor.SMID = cpu_to_le16(smid);
writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost);
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
index 85db1f261380..f3818e30baed 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -830,6 +830,7 @@ struct chain_lookup {
*/
struct scsiio_tracker {
u16 smid;
+ struct scsi_cmnd *scmd;
u8 cb_idx;
u8 direct_io;
struct pcie_sg_list pcie_sg_list;
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 1008c5e30274..3e93c4ab841b 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -5210,6 +5210,7 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
((ioc_status & MPI2_IOCSTATUS_MASK)
!= MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) {
st->direct_io = 0;
+ st->scmd = scmd;
memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
mpi_request->DevHandle =
cpu_to_le16(sas_device_priv_data->sas_target->handle);