summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJames Bottomley <JBottomley@Parallels.com>2013-05-07 15:38:18 -0700
committerJames Bottomley <JBottomley@Parallels.com>2013-06-04 11:15:59 -0700
commite73823f7a2c921dcf068d34ea03bd682498d9e42 (patch)
tree8b5b2262352572b3069a671f7578ea6d5ef07162
parent9edf7d75ee5f21663a0183d21f702682d0ef132f (diff)
[SCSI] libsas: implement > 16 byte CDB support
Remove the arbitrary expectation in libsas that all SCSI commands are 16 bytes or less. Instead do all copies via cmd->cmd_len (and use a pointer to this in the libsas task instead of a copy). Note that this still doesn't enable > 16 byte CDB support in the underlying drivers because their internal format has to be fixed and the wire format of > 16 byte CDBs according to the SAS spec is different. the libsas drivers (isci, aic94xx, mvsas and pm8xxx are all updated for this change. Cc: Lukasz Dorau <lukasz.dorau@intel.com> Cc: Maciej Patelczyk <maciej.patelczyk@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Jack Wang <xjtuwjp@gmail.com> Cc: Lindar Liu <lindar_liu@usish.com> Cc: Xiangliang Yu <yuxiangl@marvell.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
-rw-r--r--drivers/scsi/aic94xx/aic94xx_task.c3
-rw-r--r--drivers/scsi/isci/request.c4
-rw-r--r--drivers/scsi/libsas/sas_scsi_host.c2
-rw-r--r--drivers/scsi/mvsas/mv_sas.c3
-rw-r--r--drivers/scsi/pm8001/pm8001_hwi.c3
-rw-r--r--drivers/scsi/pm8001/pm80xx_hwi.c21
-rw-r--r--include/scsi/libsas.h2
7 files changed, 21 insertions, 17 deletions
diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c
index 393e7ce8e95..59b86e260ce 100644
--- a/drivers/scsi/aic94xx/aic94xx_task.c
+++ b/drivers/scsi/aic94xx/aic94xx_task.c
@@ -505,7 +505,8 @@ static int asd_build_ssp_ascb(struct asd_ascb *ascb, struct sas_task *task,
scb->ssp_task.ssp_cmd.efb_prio_attr |= EFB_MASK;
scb->ssp_task.ssp_cmd.efb_prio_attr |= (task->ssp_task.task_prio << 3);
scb->ssp_task.ssp_cmd.efb_prio_attr |= (task->ssp_task.task_attr & 7);
- memcpy(scb->ssp_task.ssp_cmd.cdb, task->ssp_task.cdb, 16);
+ memcpy(scb->ssp_task.ssp_cmd.cdb, task->ssp_task.cmd->cmnd,
+ task->ssp_task.cmd->cmd_len);
scb->ssp_task.sister_scb = cpu_to_le16(0xFFFF);
scb->ssp_task.conn_handle = cpu_to_le16(
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index e3e3bcbd5a9..7b082157eb7 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -184,8 +184,8 @@ static void sci_io_request_build_ssp_command_iu(struct isci_request *ireq)
cmd_iu->task_attr = task->ssp_task.task_attr;
cmd_iu->_r_c = 0;
- sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb,
- sizeof(task->ssp_task.cdb) / sizeof(u32));
+ sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cmd->cmnd,
+ task->ssp_task.cmd->cmd_len / sizeof(u32));
}
static void sci_task_request_build_ssp_task_iu(struct isci_request *ireq)
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 6e795a174a1..da3aee17faa 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -167,7 +167,7 @@ static struct sas_task *sas_create_task(struct scsi_cmnd *cmd,
int_to_scsilun(cmd->device->lun, &lun);
memcpy(task->ssp_task.LUN, &lun.scsi_lun, 8);
task->ssp_task.task_attr = TASK_ATTR_SIMPLE;
- memcpy(task->ssp_task.cdb, cmd->cmnd, 16);
+ task->ssp_task.cmd = cmd;
task->scatter = scsi_sglist(cmd);
task->num_scatter = scsi_sg_count(cmd);
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index c9e244984e3..f14665a6293 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -686,7 +686,8 @@ static int mvs_task_prep_ssp(struct mvs_info *mvi,
if (ssp_hdr->frame_type != SSP_TASK) {
buf_cmd[9] = fburst | task->ssp_task.task_attr |
(task->ssp_task.task_prio << 3);
- memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16);
+ memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
+ task->ssp_task.cmd->cmd_len);
} else{
buf_cmd[10] = tmf->tmf;
switch (tmf->tmf) {
diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index 69dd49c05f1..a58546f73f0 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -4291,7 +4291,8 @@ static int pm8001_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha,
ssp_cmd.ssp_iu.efb_prio_attr |= 0x80;
ssp_cmd.ssp_iu.efb_prio_attr |= (task->ssp_task.task_prio << 3);
ssp_cmd.ssp_iu.efb_prio_attr |= (task->ssp_task.task_attr & 7);
- memcpy(ssp_cmd.ssp_iu.cdb, task->ssp_task.cdb, 16);
+ memcpy(ssp_cmd.ssp_iu.cdb, task->ssp_task.cmd->cmnd,
+ task->ssp_task.cmd->cmd_len);
circularQ = &pm8001_ha->inbnd_q_tbl[0];
/* fill in PRD (scatter/gather) table, if any */
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index 302514d8157..f6c65eeafb5 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -3559,9 +3559,9 @@ err_out:
static int check_enc_sas_cmd(struct sas_task *task)
{
- if ((task->ssp_task.cdb[0] == READ_10)
- || (task->ssp_task.cdb[0] == WRITE_10)
- || (task->ssp_task.cdb[0] == WRITE_VERIFY))
+ u8 cmd = task->ssp_task.cmd->cmnd[0];
+
+ if (cmd == READ_10 || cmd == WRITE_10 || cmd == WRITE_VERIFY)
return 1;
else
return 0;
@@ -3624,7 +3624,8 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha,
ssp_cmd.ssp_iu.efb_prio_attr |= 0x80;
ssp_cmd.ssp_iu.efb_prio_attr |= (task->ssp_task.task_prio << 3);
ssp_cmd.ssp_iu.efb_prio_attr |= (task->ssp_task.task_attr & 7);
- memcpy(ssp_cmd.ssp_iu.cdb, task->ssp_task.cdb, 16);
+ memcpy(ssp_cmd.ssp_iu.cdb, task->ssp_task.cmd->cmnd,
+ task->ssp_task.cmd->cmd_len);
circularQ = &pm8001_ha->inbnd_q_tbl[0];
/* Check if encryption is set */
@@ -3632,7 +3633,7 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha,
!(pm8001_ha->encrypt_info.status) && check_enc_sas_cmd(task)) {
PM8001_IO_DBG(pm8001_ha, pm8001_printk(
"Encryption enabled.Sending Encrypt SAS command 0x%x\n",
- task->ssp_task.cdb[0]));
+ task->ssp_task.cmd->cmnd[0]));
opc = OPC_INB_SSP_INI_DIF_ENC_IO;
/* enable encryption. 0 for SAS 1.1 and SAS 2.0 compatible TLR*/
ssp_cmd.dad_dir_m_tlr = cpu_to_le32
@@ -3666,14 +3667,14 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha,
/* XTS mode. All other fields are 0 */
ssp_cmd.key_cmode = 0x6 << 4;
/* set tweak values. Should be the start lba */
- ssp_cmd.twk_val0 = cpu_to_le32((task->ssp_task.cdb[2] << 24) |
- (task->ssp_task.cdb[3] << 16) |
- (task->ssp_task.cdb[4] << 8) |
- (task->ssp_task.cdb[5]));
+ ssp_cmd.twk_val0 = cpu_to_le32((task->ssp_task.cmd->cmnd[2] << 24) |
+ (task->ssp_task.cmd->cmnd[3] << 16) |
+ (task->ssp_task.cmd->cmnd[4] << 8) |
+ (task->ssp_task.cmd->cmnd[5]));
} else {
PM8001_IO_DBG(pm8001_ha, pm8001_printk(
"Sending Normal SAS command 0x%x inb q %x\n",
- task->ssp_task.cdb[0], inb));
+ task->ssp_task.cmd->cmnd[0], inb));
/* fill in PRD (scatter/gather) table, if any */
if (task->num_scatter > 1) {
pm8001_chip_make_sg(task->scatter, ccb->n_elem,
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index e2c1e66d58a..f843dd8722a 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -608,7 +608,7 @@ struct sas_ssp_task {
u8 enable_first_burst:1;
enum task_attribute task_attr;
u8 task_prio;
- u8 cdb[16];
+ struct scsi_cmnd *cmd;
};
struct sas_task {