This add support for type 1 and 3 DIF support per the Oracle API.
Signed-off-by: Eric Moore <eric.moore@xxxxxxx>
diff -uaprN a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h
--- a/drivers/scsi/mpt2sas/mpt2sas_base.h 2009-04-13 15:45:09.000000000 -0600
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.h 2009-04-13 16:31:27.000000000 -0600
@@ -61,6 +61,7 @@
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_sas.h>
#include <scsi/scsi_dbg.h>
+#include <scsi/scsi_eh.h>
#include "mpt2sas_debug.h"
diff -uaprN a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
--- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c 2009-04-13 15:58:57.000000000 -0600
+++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c 2009-04-13 16:30:29.000000000 -0600
@@ -2390,6 +2390,94 @@ mpt2sas_scsih_reset_handler(struct MPT2S
}
/**
+ * _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;
+
+ /*
+ * enable ref/app/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_APPTAG |
+ MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
+
+ /* set block size */
+ mpi_request->EEDPBlockSize = scmd->device->sector_size;
+ mpi_request->CDB.EEDP32.PrimaryApplicationTagMask = 0xFFFF;
+ mpi_request->CDB.EEDP32.PrimaryApplicationTag = 0;
+ mpi_request->CDB.EEDP32.PrimaryReferenceTag =
+ cpu_to_be32(scsi_get_lba(scmd));
+}
+
+/**
+ * _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
* @done: function pointer to be invoked on completion
@@ -2470,6 +2558,7 @@ scsih_qcmd(struct scsi_cmnd *scmd, void
}
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 +2693,15 @@ _scsih_scsi_ioc_info(struct MPT2SAS_ADAP
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 +3037,11 @@ scsih_io_done(struct MPT2SAS_ADAPTER *io
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 +5606,10 @@ scsih_probe(struct pci_dev *pdev, const
goto out_add_shost_fail;
}
+ scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
+ | SHOST_DIF_TYPE3_PROTECTION);
+ scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
+
/* event thread */
snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name),
"fw_event%d", ioc->id);
--
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