From 3c621b3ee1432e7a2aca4a3b670b1d05f19ecf9c Mon Sep 17 00:00:00 2001 From: Eric Moore Date: Mon, 18 May 2009 12:59:41 -0600 Subject: [PATCH] [SCSI] mpt2sas: T10 DIF Support This add support for type 1 and 3 DIF support per the Oracle API. Signed-off-by: Eric Moore Signed-off-by: James Bottomley --- drivers/scsi/mpt2sas/mpt2sas_base.h | 1 + drivers/scsi/mpt2sas/mpt2sas_scsih.c | 118 +++++++++++++++++++++++++++ 2 files changed, 119 insertions(+) diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h index 36b1d1052ba1..aba81fb320b7 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.h +++ b/drivers/scsi/mpt2sas/mpt2sas_base.h @@ -61,6 +61,7 @@ #include #include #include +#include #include "mpt2sas_debug.h" diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index e3a7967259e7..5394f6196416 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -2389,6 +2389,106 @@ mpt2sas_scsih_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase) } } +/** + * _scsih_setup_eedp - setup MPI request for EEDP transfer + * @scmd: pointer to scsi command object + * @mpi_request: pointer to the SCSI_IO reqest message frame + * + * Supporting protection 1 and 3. + * + * Returns nothing + */ +static void +_scsih_setup_eedp(struct scsi_cmnd *scmd, Mpi2SCSIIORequest_t *mpi_request) +{ + u16 eedp_flags; + unsigned char prot_op = scsi_get_prot_op(scmd); + unsigned char prot_type = scsi_get_prot_type(scmd); + + if (prot_type == SCSI_PROT_DIF_TYPE0 || + prot_type == SCSI_PROT_DIF_TYPE2 || + prot_op == SCSI_PROT_NORMAL) + return; + + if (prot_op == SCSI_PROT_READ_STRIP) + eedp_flags = MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP; + else if (prot_op == SCSI_PROT_WRITE_INSERT) + eedp_flags = MPI2_SCSIIO_EEDPFLAGS_INSERT_OP; + else + return; + + mpi_request->EEDPBlockSize = scmd->device->sector_size; + + switch (prot_type) { + case SCSI_PROT_DIF_TYPE1: + + /* + * enable ref/guard checking + * auto increment ref tag + */ + mpi_request->EEDPFlags = eedp_flags | + MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | + MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | + MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD; + mpi_request->CDB.EEDP32.PrimaryReferenceTag = + cpu_to_be32(scsi_get_lba(scmd)); + + break; + + case SCSI_PROT_DIF_TYPE3: + + /* + * enable guard checking + */ + mpi_request->EEDPFlags = eedp_flags | + MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD; + + break; + } +} + +/** + * _scsih_eedp_error_handling - return sense code for EEDP errors + * @scmd: pointer to scsi command object + * @ioc_status: ioc status + * + * Returns nothing + */ +static void +_scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status) +{ + u8 ascq; + u8 sk; + u8 host_byte; + + switch (ioc_status) { + case MPI2_IOCSTATUS_EEDP_GUARD_ERROR: + ascq = 0x01; + break; + case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR: + ascq = 0x02; + break; + case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR: + ascq = 0x03; + break; + default: + ascq = 0x00; + break; + } + + if (scmd->sc_data_direction == DMA_TO_DEVICE) { + sk = ILLEGAL_REQUEST; + host_byte = DID_ABORT; + } else { + sk = ABORTED_COMMAND; + host_byte = DID_OK; + } + + scsi_build_sense_buffer(0, scmd->sense_buffer, sk, 0x10, ascq); + scmd->result = DRIVER_SENSE << 24 | (host_byte << 16) | + SAM_STAT_CHECK_CONDITION; +} + /** * scsih_qcmd - main scsi request entry point * @scmd: pointer to scsi command object @@ -2470,6 +2570,7 @@ scsih_qcmd(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *)) } mpi_request = mpt2sas_base_get_msg_frame(ioc, smid); memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t)); + _scsih_setup_eedp(scmd, mpi_request); mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; if (sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) @@ -2604,6 +2705,15 @@ _scsih_scsi_ioc_info(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd, case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED: desc_ioc_state = "scsi ext terminated"; break; + case MPI2_IOCSTATUS_EEDP_GUARD_ERROR: + desc_ioc_state = "eedp guard error"; + break; + case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR: + desc_ioc_state = "eedp ref tag error"; + break; + case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR: + desc_ioc_state = "eedp app tag error"; + break; default: desc_ioc_state = "unknown"; break; @@ -2939,6 +3049,11 @@ scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply) scmd->result = DID_RESET << 16; break; + case MPI2_IOCSTATUS_EEDP_GUARD_ERROR: + case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR: + case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR: + _scsih_eedp_error_handling(scmd, ioc_status); + break; case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR: case MPI2_IOCSTATUS_INVALID_FUNCTION: case MPI2_IOCSTATUS_INVALID_SGL: @@ -5503,6 +5618,9 @@ scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto out_add_shost_fail; } + scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION + | SHOST_DIF_TYPE3_PROTECTION); + /* event thread */ snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name), "fw_event%d", ioc->id); -- 2.30.2