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[SCSI] qla2xxx: T10 DIF Type 2 support

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Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Arun Easi 2010-07-23 15:28:38 +05:00 committed by James Bottomley
parent 3dbe756a66
commit 0c47087485
4 changed files with 43 additions and 6 deletions
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2
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -1758,8 +1758,10 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable)
" protection.\n"));
scsi_host_set_prot(vha->host,
SHOST_DIF_TYPE1_PROTECTION
| SHOST_DIF_TYPE2_PROTECTION
| SHOST_DIF_TYPE3_PROTECTION
| SHOST_DIX_TYPE1_PROTECTION
| SHOST_DIX_TYPE2_PROTECTION
| SHOST_DIX_TYPE3_PROTECTION);
scsi_host_set_guard(vha->host, SHOST_DIX_GUARD_CRC);
} else

35
drivers/scsi/qla2xxx/qla_iocb.c
View File

@ -712,6 +712,25 @@ qla24xx_set_t10dif_tags(struct scsi_cmnd *cmd, struct fw_dif_context *pkt,
* match LBA in CDB + N
*/
case SCSI_PROT_DIF_TYPE2:
if (!ql2xenablehba_err_chk)
break;
if (scsi_prot_sg_count(cmd)) {
spt = page_address(sg_page(scsi_prot_sglist(cmd))) +
scsi_prot_sglist(cmd)[0].offset;
pkt->app_tag = swab32(spt->app_tag);
pkt->app_tag_mask[0] = 0xff;
pkt->app_tag_mask[1] = 0xff;
}
pkt->ref_tag = cpu_to_le32((uint32_t)
(0xffffffff & scsi_get_lba(cmd)));
/* enable ALL bytes of the ref tag */
pkt->ref_tag_mask[0] = 0xff;
pkt->ref_tag_mask[1] = 0xff;
pkt->ref_tag_mask[2] = 0xff;
pkt->ref_tag_mask[3] = 0xff;
break;
/* For Type 3 protection: 16 bit GUARD only */
@ -1062,7 +1081,7 @@ qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
total_bytes = data_bytes;
dif_bytes = 0;
blk_size = cmd->device->sector_size;
if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE1) {
if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
dif_bytes = (data_bytes / blk_size) * 8;
total_bytes += dif_bytes;
}
@ -1100,6 +1119,12 @@ qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
vha->host_no, dif_bytes, dif_bytes, total_bytes, total_bytes,
crc_ctx_pkt->blk_size, crc_ctx_pkt->blk_size));
if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
DEBUG18(printk(KERN_INFO "%s: Zero data bytes or DMA-NONE %d\n",
__func__, data_bytes));
cmd_pkt->byte_count = __constant_cpu_to_le32(0);
return QLA_SUCCESS;
}
/* Walks data segments */
cmd_pkt->control_flags |=
@ -1310,9 +1335,11 @@ qla24xx_dif_start_scsi(srb_t *sp)
#define QDSS_GOT_Q_SPACE BIT_0
/* Only process protection in this routine */
if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL)
return qla24xx_start_scsi(sp);
/* Only process protection or >16 cdb in this routine */
if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
if (cmd->cmd_len <= 16)
return qla24xx_start_scsi(sp);
}
/* Setup device pointers. */

5
drivers/scsi/qla2xxx/qla_mid.c
View File

@ -399,7 +399,10 @@ qla24xx_create_vhost(struct fc_vport *fc_vport)
host->can_queue = base_vha->req->length + 128;
host->this_id = 255;
host->cmd_per_lun = 3;
host->max_cmd_len = MAX_CMDSZ;
if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
host->max_cmd_len = 32;
else
host->max_cmd_len = MAX_CMDSZ;
host->max_channel = MAX_BUSES - 1;
host->max_lun = MAX_LUNS;
host->unique_id = host->host_no;

7
drivers/scsi/qla2xxx/qla_os.c
View File

@ -2147,7 +2147,10 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
host->this_id = 255;
host->cmd_per_lun = 3;
host->unique_id = host->host_no;
host->max_cmd_len = MAX_CMDSZ;
if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
host->max_cmd_len = 32;
else
host->max_cmd_len = MAX_CMDSZ;
host->max_channel = MAX_BUSES - 1;
host->max_lun = MAX_LUNS;
host->transportt = qla2xxx_transport_template;
@ -2255,8 +2258,10 @@ skip_dpc:
" protection.\n"));
scsi_host_set_prot(host,
SHOST_DIF_TYPE1_PROTECTION
| SHOST_DIF_TYPE2_PROTECTION
| SHOST_DIF_TYPE3_PROTECTION
| SHOST_DIX_TYPE1_PROTECTION
| SHOST_DIX_TYPE2_PROTECTION
| SHOST_DIX_TYPE3_PROTECTION);
scsi_host_set_guard(host, SHOST_DIX_GUARD_CRC);
} else