complete(SRpnt->waiting);
}
-static struct st_request *st_allocate_request(void)
+static struct st_request *st_allocate_request(struct scsi_tape *stp)
{
- return kzalloc(sizeof(struct st_request), GFP_KERNEL);
+ struct st_request *streq;
+
+ streq = kzalloc(sizeof(*streq), GFP_KERNEL);
+ if (streq)
+ streq->stp = stp;
+ else {
+ DEBC(printk(KERN_ERR "%s: Can't get SCSI request.\n",
+ tape_name(stp)););
+ if (signal_pending(current))
+ stp->buffer->syscall_result = -EINTR;
+ else
+ stp->buffer->syscall_result = -EBUSY;
+ }
+
+ return streq;
}
static void st_release_request(struct st_request *streq)
return NULL;
}
- if (SRpnt == NULL) {
- SRpnt = st_allocate_request();
- if (SRpnt == NULL) {
- DEBC( printk(KERN_ERR "%s: Can't get SCSI request.\n",
- tape_name(STp)); );
- if (signal_pending(current))
- (STp->buffer)->syscall_result = (-EINTR);
- else
- (STp->buffer)->syscall_result = (-EBUSY);
+ if (!SRpnt) {
+ SRpnt = st_allocate_request(STp);
+ if (!SRpnt)
return NULL;
- }
- SRpnt->stp = STp;
}
/* If async IO, set last_SRpnt. This ptr tells write_behind_check
return SRpnt;
}
+static int st_scsi_kern_execute(struct st_request *streq,
+ const unsigned char *cmd, int data_direction,
+ void *buffer, unsigned bufflen, int timeout,
+ int retries)
+{
+ struct scsi_tape *stp = streq->stp;
+ int ret, resid;
+
+ stp->buffer->cmdstat.have_sense = 0;
+ memcpy(streq->cmd, cmd, sizeof(streq->cmd));
+
+ ret = scsi_execute(stp->device, cmd, data_direction, buffer, bufflen,
+ streq->sense, timeout, retries, 0, &resid);
+ if (driver_byte(ret) & DRIVER_ERROR)
+ return -EBUSY;
+
+ stp->buffer->cmdstat.midlevel_result = streq->result = ret;
+ stp->buffer->cmdstat.residual = resid;
+ stp->buffer->syscall_result = st_chk_result(stp, streq);
+
+ return 0;
+}
/* Handle the write-behind checking (waits for completion). Returns -ENOSPC if
write has been correct but EOM early warning reached, -EIO if write ended in
tape_name(STp), forward ? "forward" : "backward"));
SRpnt = st_do_scsi(NULL, STp, cmd, 0, DMA_NONE,
- STp->device->timeout, MAX_RETRIES, 1);
+ STp->device->request_queue->rq_timeout,
+ MAX_RETRIES, 1);
if (!SRpnt)
return (STp->buffer)->syscall_result;
cmd[4] = blks;
SRpnt = st_do_scsi(NULL, STp, cmd, transfer, DMA_TO_DEVICE,
- STp->device->timeout, MAX_WRITE_RETRIES, 1);
+ STp->device->request_queue->rq_timeout,
+ MAX_WRITE_RETRIES, 1);
if (!SRpnt)
return (STp->buffer)->syscall_result;
int attentions, waits, max_wait, scode;
int retval = CHKRES_READY, new_session = 0;
unsigned char cmd[MAX_COMMAND_SIZE];
- struct st_request *SRpnt = NULL;
+ struct st_request *SRpnt;
struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat;
+ SRpnt = st_allocate_request(STp);
+ if (!SRpnt)
+ return STp->buffer->syscall_result;
+
max_wait = do_wait ? ST_BLOCK_SECONDS : 0;
for (attentions=waits=0; ; ) {
memset((void *) &cmd[0], 0, MAX_COMMAND_SIZE);
cmd[0] = TEST_UNIT_READY;
- SRpnt = st_do_scsi(SRpnt, STp, cmd, 0, DMA_NONE,
- STp->long_timeout, MAX_READY_RETRIES, 1);
- if (!SRpnt) {
- retval = (STp->buffer)->syscall_result;
+ retval = st_scsi_kern_execute(SRpnt, cmd, DMA_NONE, NULL, 0,
+ STp->long_timeout,
+ MAX_READY_RETRIES);
+ if (retval)
break;
- }
if (cmdstatp->have_sense) {
break;
}
- if (SRpnt != NULL)
- st_release_request(SRpnt);
+ st_release_request(SRpnt);
+
return retval;
}
cmd[0] = READ_BLOCK_LIMITS;
SRpnt = st_do_scsi(SRpnt, STp, cmd, 6, DMA_FROM_DEVICE,
- STp->device->timeout, MAX_READY_RETRIES, 1);
+ STp->device->request_queue->rq_timeout,
+ MAX_READY_RETRIES, 1);
if (!SRpnt) {
retval = (STp->buffer)->syscall_result;
goto err_out;
cmd[4] = 12;
SRpnt = st_do_scsi(SRpnt, STp, cmd, 12, DMA_FROM_DEVICE,
- STp->device->timeout, MAX_READY_RETRIES, 1);
+ STp->device->request_queue->rq_timeout,
+ MAX_READY_RETRIES, 1);
if (!SRpnt) {
retval = (STp->buffer)->syscall_result;
goto err_out;
cmd[4] = 1 + STp->two_fm;
SRpnt = st_do_scsi(NULL, STp, cmd, 0, DMA_NONE,
- STp->device->timeout, MAX_WRITE_RETRIES, 1);
+ STp->device->request_queue->rq_timeout,
+ MAX_WRITE_RETRIES, 1);
if (!SRpnt) {
result = (STp->buffer)->syscall_result;
goto out;
cmd[4] = blks;
SRpnt = st_do_scsi(SRpnt, STp, cmd, transfer, DMA_TO_DEVICE,
- STp->device->timeout, MAX_WRITE_RETRIES, !async_write);
+ STp->device->request_queue->rq_timeout,
+ MAX_WRITE_RETRIES, !async_write);
if (!SRpnt) {
retval = STbp->syscall_result;
goto out;
SRpnt = *aSRpnt;
SRpnt = st_do_scsi(SRpnt, STp, cmd, bytes, DMA_FROM_DEVICE,
- STp->device->timeout, MAX_RETRIES, 1);
+ STp->device->request_queue->rq_timeout,
+ MAX_RETRIES, 1);
release_buffering(STp, 1);
*aSRpnt = SRpnt;
if (!SRpnt)
DEBC( printk(KERN_INFO "%s: Long timeout set to %d seconds.\n", name,
(value & ~MT_ST_SET_LONG_TIMEOUT)));
} else {
- STp->device->timeout = value * HZ;
+ blk_queue_rq_timeout(STp->device->request_queue,
+ value * HZ);
DEBC( printk(KERN_INFO "%s: Normal timeout set to %d seconds.\n",
name, value) );
}
cmd[4] = 255;
SRpnt = st_do_scsi(SRpnt, STp, cmd, cmd[4], DMA_FROM_DEVICE,
- STp->device->timeout, 0, 1);
+ STp->device->request_queue->rq_timeout, 0, 1);
if (SRpnt == NULL)
return (STp->buffer)->syscall_result;
(STp->buffer)->b_data[pgo + MP_OFF_PAGE_NBR] &= MP_MSK_PAGE_NBR;
SRpnt = st_do_scsi(SRpnt, STp, cmd, cmd[4], DMA_TO_DEVICE,
- (slow ? STp->long_timeout : STp->device->timeout), 0, 1);
+ (slow ? STp->long_timeout : STp->device->request_queue->rq_timeout), 0, 1);
if (SRpnt == NULL)
return (STp->buffer)->syscall_result;
}
if (STp->immediate) {
cmd[1] = 1; /* Don't wait for completion */
- timeout = STp->device->timeout;
+ timeout = STp->device->request_queue->rq_timeout;
}
else
timeout = STp->long_timeout;
cmd[2] = (arg >> 16);
cmd[3] = (arg >> 8);
cmd[4] = arg;
- timeout = STp->device->timeout;
+ timeout = STp->device->request_queue->rq_timeout;
DEBC(
if (cmd_in == MTWEOF)
printk(ST_DEB_MSG "%s: Writing %d filemarks.\n", name,
cmd[0] = REZERO_UNIT;
if (STp->immediate) {
cmd[1] = 1; /* Don't wait for completion */
- timeout = STp->device->timeout;
+ timeout = STp->device->request_queue->rq_timeout;
}
DEBC(printk(ST_DEB_MSG "%s: Rewinding tape.\n", name));
fileno = blkno = at_sm = 0;
cmd[0] = START_STOP;
if (STp->immediate) {
cmd[1] = 1; /* Don't wait for completion */
- timeout = STp->device->timeout;
+ timeout = STp->device->request_queue->rq_timeout;
}
cmd[4] = 3;
DEBC(printk(ST_DEB_MSG "%s: Retensioning tape.\n", name));
cmd[1] = (arg ? 1 : 0); /* Long erase with non-zero argument */
if (STp->immediate) {
cmd[1] |= 2; /* Don't wait for completion */
- timeout = STp->device->timeout;
+ timeout = STp->device->request_queue->rq_timeout;
}
else
timeout = STp->long_timeout * 8;
(STp->buffer)->b_data[9] = (ltmp >> 16);
(STp->buffer)->b_data[10] = (ltmp >> 8);
(STp->buffer)->b_data[11] = ltmp;
- timeout = STp->device->timeout;
+ timeout = STp->device->request_queue->rq_timeout;
DEBC(
if (cmd_in == MTSETBLK || cmd_in == SET_DENS_AND_BLK)
printk(ST_DEB_MSG
scmd[1] = 1;
}
SRpnt = st_do_scsi(NULL, STp, scmd, 20, DMA_FROM_DEVICE,
- STp->device->timeout, MAX_READY_RETRIES, 1);
+ STp->device->request_queue->rq_timeout,
+ MAX_READY_RETRIES, 1);
if (!SRpnt)
return (STp->buffer)->syscall_result;
}
if (STp->immediate) {
scmd[1] |= 1; /* Don't wait for completion */
- timeout = STp->device->timeout;
+ timeout = STp->device->request_queue->rq_timeout;
}
SRpnt = st_do_scsi(NULL, STp, scmd, 0, DMA_NONE,
tpnt->partition = 0;
tpnt->new_partition = 0;
tpnt->nbr_partitions = 0;
- tpnt->device->timeout = ST_TIMEOUT;
+ blk_queue_rq_timeout(tpnt->device->request_queue, ST_TIMEOUT);
tpnt->long_timeout = ST_LONG_TIMEOUT;
tpnt->try_dio = try_direct_io && !SDp->host->unchecked_isa_dma;