diff options
| author | Suganath Prabu Subramani | 2017-10-31 13:32:28 +0100 |
|---|---|---|
| committer | Martin K. Petersen | 2017-11-03 17:20:52 +0100 |
| commit | 016d5c35e27824f31c394009dd0f72f2c6b0dc85 (patch) | |
| tree | 8a631356de4f2c8b1fd937a7b9d4de35f09c2421 /drivers/scsi/mpt3sas/mpt3sas_scsih.c | |
| parent | scsi: mpt3sas: Add nvme device support in slave alloc, target alloc and probe (diff) | |
| download | kernel-qcow2-linux-016d5c35e27824f31c394009dd0f72f2c6b0dc85.tar.gz kernel-qcow2-linux-016d5c35e27824f31c394009dd0f72f2c6b0dc85.tar.xz kernel-qcow2-linux-016d5c35e27824f31c394009dd0f72f2c6b0dc85.zip | |
scsi: mpt3sas: SGL to PRP Translation for I/Os to NVMe devices
* Added support for translating the SGLs associated with incoming
commands either to IEE SGL or NVMe PRPs for NVMe devices.
* The hardware translation of IEEE SGL to NVMe PRPs has limitations
and if a command cannot be translated by hardware then it will go to
firmware and the firmware needs to translate it. This will have a
performance impact. To avoid that, the driver proactively checks
whether the translation will be done in hardware or not. If not, then
driver translates.
[mkp: clarified commit message]
Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
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/scsi/mpt3sas/mpt3sas_scsih.c')
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_scsih.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index c86399759705..d7f92f0867fd 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -4255,7 +4255,7 @@ _scsih_flush_running_cmds(struct MPT3SAS_ADAPTER *ioc) */ static void _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, - Mpi2SCSIIORequest_t *mpi_request) + Mpi25SCSIIORequest_t *mpi_request) { u16 eedp_flags; unsigned char prot_op = scsi_get_prot_op(scmd); @@ -4358,7 +4358,8 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd) struct _raid_device *raid_device; struct request *rq = scmd->request; int class; - Mpi2SCSIIORequest_t *mpi_request; + Mpi25SCSIIORequest_t *mpi_request; + struct _pcie_device *pcie_device = NULL; u32 mpi_control; u16 smid; u16 handle; @@ -4446,7 +4447,7 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd) goto out; } mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); - memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t)); + memset(mpi_request, 0, ioc->request_sz); _scsih_setup_eedp(ioc, scmd, mpi_request); if (scmd->cmd_len == 32) @@ -4465,13 +4466,14 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd) mpi_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; mpi_request->SenseBufferLowAddress = mpt3sas_base_get_sense_buffer_dma(ioc, smid); - mpi_request->SGLOffset0 = offsetof(Mpi2SCSIIORequest_t, SGL) / 4; + mpi_request->SGLOffset0 = offsetof(Mpi25SCSIIORequest_t, SGL) / 4; int_to_scsilun(sas_device_priv_data->lun, (struct scsi_lun *) mpi_request->LUN); memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len); if (mpi_request->DataLength) { - if (ioc->build_sg_scmd(ioc, scmd, smid)) { + pcie_device = sas_target_priv_data->pcie_dev; + if (ioc->build_sg_scmd(ioc, scmd, smid, pcie_device)) { mpt3sas_base_free_smid(ioc, smid); goto out; } @@ -4924,7 +4926,7 @@ out_unlock: static u8 _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) { - Mpi2SCSIIORequest_t *mpi_request; + Mpi25SCSIIORequest_t *mpi_request; Mpi2SCSIIOReply_t *mpi_reply; struct scsi_cmnd *scmd; u16 ioc_status; |