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scsi: remove abuses of scsi_populate_tag 

Unless we want to build a SPI tag message we should just check SCMD_TAGGED
instead of reverse engineering a tag type through the use of
scsi_populate_tag_msg.

Also rename the function to spi_populate_tag_msg, make it behave like the
other spi message helpers, and move it to the spi transport class.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
This commit is contained in:
Christoph Hellwig 2014-10-30 14:30:06 +01:00
parent abd0c533e3
commit 5066863337
19 changed files with 56 additions and 311 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/s390/scsi/zfcp_fc.h
View File

@ -212,8 +212,6 @@ static inline
void zfcp_fc_scsi_to_fcp(struct fcp_cmnd *fcp, struct scsi_cmnd *scsi,
u8 tm_flags)
{
char tag[2];
int_to_scsilun(scsi->device->lun, (struct scsi_lun *) &fcp->fc_lun);
if (unlikely(tm_flags)) {
@ -221,16 +219,6 @@ void zfcp_fc_scsi_to_fcp(struct fcp_cmnd *fcp, struct scsi_cmnd *scsi,
return;
}
if (scsi_populate_tag_msg(scsi, tag)) {
switch (tag[0]) {
case MSG_ORDERED_TAG:
fcp->fc_pri_ta |= FCP_PTA_ORDERED;
break;
case MSG_SIMPLE_TAG:
fcp->fc_pri_ta |= FCP_PTA_SIMPLE;
break;
};
} else
fcp->fc_pri_ta = FCP_PTA_SIMPLE;
if (scsi->sc_data_direction == DMA_FROM_DEVICE)

2
drivers/scsi/53c700.c
View File

@ -1427,7 +1427,7 @@ NCR_700_start_command(struct scsi_cmnd *SCp)
if((hostdata->tag_negotiated & (1<<scmd_id(SCp)))
&& (slot->tag != SCSI_NO_TAG && SCp->cmnd[0] != REQUEST_SENSE &&
slot->flags != NCR_700_FLAG_AUTOSENSE)) {
count += scsi_populate_tag_msg(SCp, &hostdata->msgout[count]);
count += spi_populate_tag_msg(&hostdata->msgout[count], SCp);
}
if(hostdata->fast &&

9
drivers/scsi/aic7xxx/aic79xx_osm.c
View File

@ -1619,15 +1619,6 @@ ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
}
if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
int msg_bytes;
uint8_t tag_msgs[2];
msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
hscb->control |= tag_msgs[0];
if (tag_msgs[0] == MSG_ORDERED_TASK)
dev->commands_since_idle_or_otag = 0;
} else
if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
&& (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
hscb->control |= MSG_ORDERED_TASK;

10
drivers/scsi/aic7xxx/aic7xxx_osm.c
View File

@ -1501,15 +1501,7 @@ ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
}
if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
int msg_bytes;
uint8_t tag_msgs[2];
msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
hscb->control |= tag_msgs[0];
if (tag_msgs[0] == MSG_ORDERED_TASK)
dev->commands_since_idle_or_otag = 0;
} else if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
&& (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
hscb->control |= MSG_ORDERED_TASK;
dev->commands_since_idle_or_otag = 0;

16
drivers/scsi/bnx2fc/bnx2fc_io.c
View File

@ -1725,7 +1725,6 @@ void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
struct fcp_cmnd *fcp_cmnd)
{
struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
char tag[2];
memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
@ -1739,22 +1738,11 @@ void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
fcp_cmnd->fc_tm_flags = io_req->mp_req.tm_flags;
fcp_cmnd->fc_flags = io_req->io_req_flags;
if (scsi_populate_tag_msg(sc_cmd, tag)) {
switch (tag[0]) {
case HEAD_OF_QUEUE_TAG:
fcp_cmnd->fc_pri_ta = FCP_PTA_HEADQ;
break;
case ORDERED_QUEUE_TAG:
fcp_cmnd->fc_pri_ta = FCP_PTA_ORDERED;
break;
default:
if (sc_cmd->flags & SCMD_TAGGED)
fcp_cmnd->fc_pri_ta = FCP_PTA_SIMPLE;
break;
}
} else {
else
fcp_cmnd->fc_pri_ta = 0;
}
}
static void bnx2fc_parse_fcp_rsp(struct bnx2fc_cmd *io_req,
struct fcoe_fcp_rsp_payload *fcp_rsp,

29
drivers/scsi/csiostor/csio_scsi.c
View File

@ -152,28 +152,6 @@ csio_scsi_itnexus_loss_error(uint16_t error)
return 0;
}
static inline void
csio_scsi_tag(struct scsi_cmnd *scmnd, uint8_t *tag, uint8_t hq,
uint8_t oq, uint8_t sq)
{
char stag[2];
if (scsi_populate_tag_msg(scmnd, stag)) {
switch (stag[0]) {
case HEAD_OF_QUEUE_TAG:
*tag = hq;
break;
case ORDERED_QUEUE_TAG:
*tag = oq;
break;
default:
*tag = sq;
break;
}
} else
*tag = 0;
}
/*
* csio_scsi_fcp_cmnd - Frame the SCSI FCP command paylod.
* @req: IO req structure.
@ -192,11 +170,12 @@ csio_scsi_fcp_cmnd(struct csio_ioreq *req, void *addr)
int_to_scsilun(scmnd->device->lun, &fcp_cmnd->fc_lun);
fcp_cmnd->fc_tm_flags = 0;
fcp_cmnd->fc_cmdref = 0;
fcp_cmnd->fc_pri_ta = 0;
memcpy(fcp_cmnd->fc_cdb, scmnd->cmnd, 16);
csio_scsi_tag(scmnd, &fcp_cmnd->fc_pri_ta,
FCP_PTA_HEADQ, FCP_PTA_ORDERED, FCP_PTA_SIMPLE);
if (scmnd->flags & SCMD_TAGGED)
fcp_cmnd->fc_pri_ta = FCP_PTA_SIMPLE;
else
fcp_cmnd->fc_pri_ta = 0;
fcp_cmnd->fc_dl = cpu_to_be32(scsi_bufflen(scmnd));
if (req->nsge)

2
drivers/scsi/esp_scsi.c
View File

@ -663,7 +663,7 @@ static struct esp_cmd_entry *find_and_prep_issuable_command(struct esp *esp)
return ent;
}
if (!scsi_populate_tag_msg(cmd, &ent->tag[0])) {
if (!spi_populate_tag_msg(&ent->tag[0], cmd)) {
ent->tag[0] = 0;
ent->tag[1] = 0;
}

11
drivers/scsi/fnic/fnic_scsi.c
View File

@ -325,13 +325,11 @@ static inline int fnic_queue_wq_copy_desc(struct fnic *fnic,
struct fc_rport_libfc_priv *rp = rport->dd_data;
struct host_sg_desc *desc;
struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats;
u8 pri_tag = 0;
unsigned int i;
unsigned long intr_flags;
int flags;
u8 exch_flags;
struct scsi_lun fc_lun;
char msg[2];
if (sg_count) {
/* For each SGE, create a device desc entry */
@ -357,12 +355,6 @@ static inline int fnic_queue_wq_copy_desc(struct fnic *fnic,
int_to_scsilun(sc->device->lun, &fc_lun);
pri_tag = FCPIO_ICMND_PTA_SIMPLE;
msg[0] = MSG_SIMPLE_TAG;
scsi_populate_tag_msg(sc, msg);
if (msg[0] == MSG_ORDERED_TAG)
pri_tag = FCPIO_ICMND_PTA_ORDERED;
/* Enqueue the descriptor in the Copy WQ */
spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags);
@ -394,7 +386,8 @@ static inline int fnic_queue_wq_copy_desc(struct fnic *fnic,
io_req->sgl_list_pa,
io_req->sense_buf_pa,
0, /* scsi cmd ref, always 0 */
pri_tag, /* scsi pri and tag */
FCPIO_ICMND_PTA_SIMPLE,
/* scsi pri and tag */
flags, /* command flags */
sc->cmnd, sc->cmd_len,
scsi_bufflen(sc),

14
drivers/scsi/ibmvscsi/ibmvfc.c
View File

@ -1643,19 +1643,9 @@ static int ibmvfc_queuecommand_lck(struct scsi_cmnd *cmnd,
int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun);
memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len);
if (scsi_populate_tag_msg(cmnd, tag)) {
vfc_cmd->task_tag = cpu_to_be64(tag[1]);
switch (tag[0]) {
case MSG_SIMPLE_TAG:
if (cmnd->flags & SCMD_TAGGED) {
vfc_cmd->task_tag = cpu_to_be64(cmnd->tag);
vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK;
break;
case MSG_HEAD_TAG:
vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE;
break;
case MSG_ORDERED_TAG:
vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK;
break;
};
}
if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev))))

34
drivers/scsi/ipr.c
View File

@ -5658,35 +5658,6 @@ static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
return 0;
}
/**
* ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
* @scsi_cmd: scsi command struct
*
* Return value:
* task attributes
**/
static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
{
u8 tag[2];
u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
if (scsi_populate_tag_msg(scsi_cmd, tag)) {
switch (tag[0]) {
case MSG_SIMPLE_TAG:
rc = IPR_FLAGS_LO_SIMPLE_TASK;
break;
case MSG_HEAD_TAG:
rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
break;
case MSG_ORDERED_TAG:
rc = IPR_FLAGS_LO_ORDERED_TASK;
break;
};
}
return rc;
}
/**
* ipr_erp_done - Process completion of ERP for a device
* @ipr_cmd: ipr command struct
@ -6222,7 +6193,10 @@ static int ipr_queuecommand(struct Scsi_Host *shost,
ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
}
ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
if (scsi_cmd->flags & SCMD_TAGGED)
ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
else
ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
}
if (scsi_cmd->cmnd[0] >= 0xC0 &&

14
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -4266,7 +4266,6 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
int datadir = scsi_cmnd->sc_data_direction;
char tag[2];
uint8_t *ptr;
bool sli4;
uint32_t fcpdl;
@ -4288,19 +4287,6 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
}
if (scsi_populate_tag_msg(scsi_cmnd, tag)) {
switch (tag[0]) {
case HEAD_OF_QUEUE_TAG:
fcp_cmnd->fcpCntl1 = HEAD_OF_Q;
break;
case ORDERED_QUEUE_TAG:
fcp_cmnd->fcpCntl1 = ORDERED_Q;
break;
default:
fcp_cmnd->fcpCntl1 = SIMPLE_Q;
break;
}
} else
fcp_cmnd->fcpCntl1 = SIMPLE_Q;
sli4 = (phba->sli_rev == LPFC_SLI_REV4);

34
drivers/scsi/pmcraid.c
View File

@ -3168,36 +3168,6 @@ static int pmcraid_eh_host_reset_handler(struct scsi_cmnd *scmd)
return pmcraid_reset_bringup(pinstance) == 0 ? SUCCESS : FAILED;
}
/**
* pmcraid_task_attributes - Translate SPI Q-Tags to task attributes
* @scsi_cmd: scsi command struct
*
* Return value
* number of tags or 0 if the task is not tagged
*/
static u8 pmcraid_task_attributes(struct scsi_cmnd *scsi_cmd)
{
char tag[2];
u8 rc = 0;
if (scsi_populate_tag_msg(scsi_cmd, tag)) {
switch (tag[0]) {
case MSG_SIMPLE_TAG:
rc = TASK_TAG_SIMPLE;
break;
case MSG_HEAD_TAG:
rc = TASK_TAG_QUEUE_HEAD;
break;
case MSG_ORDERED_TAG:
rc = TASK_TAG_ORDERED;
break;
};
}
return rc;
}
/**
* pmcraid_init_ioadls - initializes IOADL related fields in IOARCB
* @cmd: pmcraid command struct
@ -3553,7 +3523,9 @@ static int pmcraid_queuecommand_lck(
}
ioarcb->request_flags0 |= NO_LINK_DESCS;
ioarcb->request_flags1 |= pmcraid_task_attributes(scsi_cmd);
if (scsi_cmd->flags & SCMD_TAGGED)
ioarcb->request_flags1 |= TASK_TAG_SIMPLE;
if (RES_IS_GSCSI(res->cfg_entry))
ioarcb->request_flags1 |= DELAY_AFTER_RESET;

86
drivers/scsi/qla2xxx/qla_iocb.c
View File

@ -325,7 +325,6 @@ qla2x00_start_scsi(srb_t *sp)
struct qla_hw_data *ha;
struct req_que *req;
struct rsp_que *rsp;
char tag[2];
/* Setup device pointers. */
ret = 0;
@ -404,26 +403,7 @@ qla2x00_start_scsi(srb_t *sp)
/* Set target ID and LUN number*/
SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id);
cmd_pkt->lun = cpu_to_le16(cmd->device->lun);
/* Update tagged queuing modifier */
if (scsi_populate_tag_msg(cmd, tag)) {
switch (tag[0]) {
case HEAD_OF_QUEUE_TAG:
cmd_pkt->control_flags =
__constant_cpu_to_le16(CF_HEAD_TAG);
break;
case ORDERED_QUEUE_TAG:
cmd_pkt->control_flags =
__constant_cpu_to_le16(CF_ORDERED_TAG);
break;
default:
cmd_pkt->control_flags =
__constant_cpu_to_le16(CF_SIMPLE_TAG);
break;
}
} else {
cmd_pkt->control_flags = __constant_cpu_to_le16(CF_SIMPLE_TAG);
}
/* Load SCSI command packet. */
memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len);
@ -1264,7 +1244,6 @@ qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
uint16_t fcp_cmnd_len;
struct fcp_cmnd *fcp_cmnd;
dma_addr_t crc_ctx_dma;
char tag[2];
cmd = GET_CMD_SP(sp);
@ -1356,25 +1335,7 @@ qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32(
MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
fcp_cmnd->task_management = 0;
/*
* Update tagged queuing modifier if using command tag queuing
*/
if (scsi_populate_tag_msg(cmd, tag)) {
switch (tag[0]) {
case HEAD_OF_QUEUE_TAG:
fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE;
break;
case ORDERED_QUEUE_TAG:
fcp_cmnd->task_attribute = TSK_ORDERED;
break;
default:
fcp_cmnd->task_attribute = TSK_SIMPLE;
break;
}
} else {
fcp_cmnd->task_attribute = TSK_SIMPLE;
}
cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
@ -1495,7 +1456,6 @@ qla24xx_start_scsi(srb_t *sp)
struct scsi_cmnd *cmd = GET_CMD_SP(sp);
struct scsi_qla_host *vha = sp->fcport->vha;
struct qla_hw_data *ha = vha->hw;
char tag[2];
/* Setup device pointers. */
ret = 0;
@ -1578,22 +1538,7 @@ qla24xx_start_scsi(srb_t *sp)
int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
/* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */
if (scsi_populate_tag_msg(cmd, tag)) {
switch (tag[0]) {
case HEAD_OF_QUEUE_TAG:
cmd_pkt->task = TSK_HEAD_OF_QUEUE;
break;
case ORDERED_QUEUE_TAG:
cmd_pkt->task = TSK_ORDERED;
break;
default:
cmd_pkt->task = TSK_SIMPLE;
break;
}
} else {
cmd_pkt->task = TSK_SIMPLE;
}
/* Load SCSI command packet. */
memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
@ -2310,7 +2255,6 @@ qla82xx_start_scsi(srb_t *sp)
struct qla_hw_data *ha = vha->hw;
struct req_que *req = NULL;
struct rsp_que *rsp = NULL;
char tag[2];
/* Setup device pointers. */
ret = 0;
@ -2489,22 +2433,6 @@ qla82xx_start_scsi(srb_t *sp)
else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
ctx->fcp_cmnd->additional_cdb_len |= 2;
/*
* Update tagged queuing modifier -- default is TSK_SIMPLE (0).
*/
if (scsi_populate_tag_msg(cmd, tag)) {
switch (tag[0]) {
case HEAD_OF_QUEUE_TAG:
ctx->fcp_cmnd->task_attribute =
TSK_HEAD_OF_QUEUE;
break;
case ORDERED_QUEUE_TAG:
ctx->fcp_cmnd->task_attribute =
TSK_ORDERED;
break;
}
}
/* Populate the FCP_PRIO. */
if (ha->flags.fcp_prio_enabled)
ctx->fcp_cmnd->task_attribute |=
@ -2565,20 +2493,6 @@ qla82xx_start_scsi(srb_t *sp)
host_to_fcp_swap((uint8_t *)&cmd_pkt->lun,
sizeof(cmd_pkt->lun));
/*
* Update tagged queuing modifier -- default is TSK_SIMPLE (0).
*/
if (scsi_populate_tag_msg(cmd, tag)) {
switch (tag[0]) {
case HEAD_OF_QUEUE_TAG:
cmd_pkt->task = TSK_HEAD_OF_QUEUE;
break;
case ORDERED_QUEUE_TAG:
cmd_pkt->task = TSK_ORDERED;
break;
}
}
/* Populate the FCP_PRIO. */
if (ha->flags.fcp_prio_enabled)
cmd_pkt->task |= sp->fcport->fcp_prio << 3;

13
drivers/scsi/qla2xxx/qla_mr.c
View File

@ -3086,7 +3086,6 @@ qlafx00_start_scsi(srb_t *sp)
struct cmd_type_7_fx00 *cmd_pkt;
struct cmd_type_7_fx00 lcmd_pkt;
struct scsi_lun llun;
char tag[2];
/* Setup device pointers. */
ret = 0;
@ -3157,18 +3156,6 @@ qlafx00_start_scsi(srb_t *sp)
host_to_adap((uint8_t *)&llun, (uint8_t *)&lcmd_pkt.lun,
sizeof(lcmd_pkt.lun));
/* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */
if (scsi_populate_tag_msg(cmd, tag)) {
switch (tag[0]) {
case HEAD_OF_QUEUE_TAG:
lcmd_pkt.task = TSK_HEAD_OF_QUEUE;
break;
case ORDERED_QUEUE_TAG:
lcmd_pkt.task = TSK_ORDERED;
break;
}
}
/* Load SCSI command packet. */
host_to_adap(cmd->cmnd, lcmd_pkt.fcp_cdb, sizeof(lcmd_pkt.fcp_cdb));
lcmd_pkt.byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));

10
drivers/scsi/qla4xxx/ql4_iocb.c
View File

@ -280,7 +280,6 @@ int qla4xxx_send_command_to_isp(struct scsi_qla_host *ha, struct srb * srb)
uint16_t req_cnt;
unsigned long flags;
uint32_t index;
char tag[2];
/* Get real lun and adapter */
ddb_entry = srb->ddb;
@ -352,15 +351,6 @@ int qla4xxx_send_command_to_isp(struct scsi_qla_host *ha, struct srb * srb)
/* Set tagged queueing control flags */
cmd_entry->control_flags |= CF_SIMPLE_TAG;
if (scsi_populate_tag_msg(cmd, tag))
switch (tag[0]) {
case MSG_HEAD_TAG:
cmd_entry->control_flags |= CF_HEAD_TAG;
break;
case MSG_ORDERED_TAG:
cmd_entry->control_flags |= CF_ORDERED_TAG;
break;
}
qla4xxx_advance_req_ring_ptr(ha);
qla4xxx_build_scsi_iocbs(srb, cmd_entry, tot_dsds);

23
drivers/scsi/scsi_transport_spi.c
View File

@ -32,6 +32,7 @@
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>
@ -1207,6 +1208,28 @@ int spi_populate_ppr_msg(unsigned char *msg, int period, int offset,
}
EXPORT_SYMBOL_GPL(spi_populate_ppr_msg);
/**
* spi_populate_tag_msg - place a tag message in a buffer
* @msg: pointer to the area to place the tag
* @cmd: pointer to the scsi command for the tag
*
* Notes:
* designed to create the correct type of tag message for the
* particular request. Returns the size of the tag message.
* May return 0 if TCQ is disabled for this device.
**/
int spi_populate_tag_msg(unsigned char *msg, struct scsi_cmnd *cmd)
{
if (cmd->flags & SCMD_TAGGED) {
*msg++ = MSG_SIMPLE_TAG;
*msg++ = cmd->request->tag;
return 2;
}
return 0;
}
EXPORT_SYMBOL_GPL(spi_populate_tag_msg);
#ifdef CONFIG_SCSI_CONSTANTS
static const char * const one_byte_msgs[] = {
/* 0x00 */ "Task Complete", NULL /* Extended Message */, "Save Pointers",

12
drivers/scsi/tmscsim.c
View File

@ -243,7 +243,6 @@
#include <scsi/scsicam.h>
#include <scsi/scsi_tcq.h>
#define DC390_BANNER "Tekram DC390/AM53C974"
#define DC390_VERSION "2.1d 2004-05-27"
@ -508,7 +507,6 @@ dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_sr
struct scsi_cmnd *scmd = pSRB->pcmd;
struct scsi_device *sdev = scmd->device;
u8 cmd, disc_allowed, try_sync_nego;
char tag[2];
pSRB->ScsiPhase = SCSI_NOP0;
@ -560,11 +558,11 @@ dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_sr
cmd = SEL_W_ATN;
DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
/* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
DC390_write8(ScsiFifo, tag[0]);
pDCB->TagMask |= 1 << tag[1];
pSRB->TagNumber = tag[1];
DC390_write8(ScsiFifo, tag[1]);
if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && (scmd->flags & SCMD_TAGGED)) {
DC390_write8(ScsiFifo, MSG_SIMPLE_TAG);
pDCB->TagMask |= 1 << scmd->request->tag;
pSRB->TagNumber = scmd->request->tag;
DC390_write8(ScsiFifo, scmd->request->tag);
DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for SRB %p, block tag %02x\n", pSRB, tag[1]));
cmd = SEL_W_ATN3;
} else {

21
include/scsi/scsi_tcq.h
View File

@ -80,27 +80,6 @@ static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
scsi_adjust_queue_depth(sdev, 0, depth);
}
/**
* scsi_populate_tag_msg - place a tag message in a buffer
* @SCpnt: pointer to the Scsi_Cmnd for the tag
* @msg: pointer to the area to place the tag
*
* Notes:
* designed to create the correct type of tag message for the
* particular request. Returns the size of the tag message.
* May return 0 if TCQ is disabled for this device.
**/
static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg)
{
if (cmd->flags & SCMD_TAGGED) {
*msg++ = MSG_SIMPLE_TAG;
*msg++ = cmd->request->tag;
return 2;
}
return 0;
}
static inline struct scsi_cmnd *scsi_mq_find_tag(struct Scsi_Host *shost,
int unique_tag)
{

1
include/scsi/scsi_transport_spi.h
View File

@ -157,5 +157,6 @@ int spi_populate_width_msg(unsigned char *msg, int width);
int spi_populate_sync_msg(unsigned char *msg, int period, int offset);
int spi_populate_ppr_msg(unsigned char *msg, int period, int offset, int width,
int options);
int spi_populate_tag_msg(unsigned char *msg, struct scsi_cmnd *cmd);
#endif /* SCSI_TRANSPORT_SPI_H */