Last modified: 18-JAN-1998 Richard Gooch <rgooch@atnf.csiro.au> Devfs support
*/
-static char *verstr = "20050830";
+static const char *verstr = "20050830";
#include <linux/module.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_ioctl.h>
-#include <scsi/scsi_request.h>
#include <scsi/sg.h>
#endif
/* Bit reversed order to get same names for same minors with all
mode counts */
-static char *st_formats[] = {
+static const char *st_formats[] = {
"", "r", "k", "s", "l", "t", "o", "u",
"m", "v", "p", "x", "a", "y", "q", "z"};
static void move_buffer_data(struct st_buffer *, int);
static void buf_to_sg(struct st_buffer *, unsigned int);
-static int st_map_user_pages(struct scatterlist *, const unsigned int,
- unsigned long, size_t, int, unsigned long);
static int sgl_map_user_pages(struct scatterlist *, const unsigned int,
unsigned long, size_t, int);
static int sgl_unmap_user_pages(struct scatterlist *, const unsigned int, int);
}
-static void st_analyze_sense(struct scsi_request *SRpnt, struct st_cmdstatus *s)
+static void st_analyze_sense(struct st_request *SRpnt, struct st_cmdstatus *s)
{
const u8 *ucp;
- const u8 *sense = SRpnt->sr_sense_buffer;
+ const u8 *sense = SRpnt->sense;
- s->have_sense = scsi_request_normalize_sense(SRpnt, &s->sense_hdr);
+ s->have_sense = scsi_normalize_sense(SRpnt->sense,
+ SCSI_SENSE_BUFFERSIZE, &s->sense_hdr);
s->flags = 0;
if (s->have_sense) {
/* Convert the result to success code */
-static int st_chk_result(struct scsi_tape *STp, struct scsi_request * SRpnt)
+static int st_chk_result(struct scsi_tape *STp, struct st_request * SRpnt)
{
- int result = SRpnt->sr_result;
+ int result = SRpnt->result;
u8 scode;
DEB(const char *stp;)
char *name = tape_name(STp);
DEB(
if (debugging) {
- printk(ST_DEB_MSG "%s: Error: %x, cmd: %x %x %x %x %x %x Len: %d\n",
+ printk(ST_DEB_MSG "%s: Error: %x, cmd: %x %x %x %x %x %x\n",
name, result,
- SRpnt->sr_cmnd[0], SRpnt->sr_cmnd[1], SRpnt->sr_cmnd[2],
- SRpnt->sr_cmnd[3], SRpnt->sr_cmnd[4], SRpnt->sr_cmnd[5],
- SRpnt->sr_bufflen);
+ SRpnt->cmd[0], SRpnt->cmd[1], SRpnt->cmd[2],
+ SRpnt->cmd[3], SRpnt->cmd[4], SRpnt->cmd[5]);
if (cmdstatp->have_sense)
- scsi_print_req_sense("st", SRpnt);
+ __scsi_print_sense("st", SRpnt->sense, SCSI_SENSE_BUFFERSIZE);
} ) /* end DEB */
if (!debugging) { /* Abnormal conditions for tape */
if (!cmdstatp->have_sense)
/* scode != UNIT_ATTENTION && */
scode != BLANK_CHECK &&
scode != VOLUME_OVERFLOW &&
- SRpnt->sr_cmnd[0] != MODE_SENSE &&
- SRpnt->sr_cmnd[0] != TEST_UNIT_READY) {
+ SRpnt->cmd[0] != MODE_SENSE &&
+ SRpnt->cmd[0] != TEST_UNIT_READY) {
printk(KERN_WARNING "%s: Error with sense data: ", name);
- scsi_print_req_sense("st", SRpnt);
+ __scsi_print_sense("st", SRpnt->sense,
+ SCSI_SENSE_BUFFERSIZE);
}
}
if (cmdstatp->fixed_format &&
STp->cln_mode >= EXTENDED_SENSE_START) { /* Only fixed format sense */
if (STp->cln_sense_value)
- STp->cleaning_req |= ((SRpnt->sr_sense_buffer[STp->cln_mode] &
+ STp->cleaning_req |= ((SRpnt->sense[STp->cln_mode] &
STp->cln_sense_mask) == STp->cln_sense_value);
else
- STp->cleaning_req |= ((SRpnt->sr_sense_buffer[STp->cln_mode] &
+ STp->cleaning_req |= ((SRpnt->sense[STp->cln_mode] &
STp->cln_sense_mask) != 0);
}
if (cmdstatp->have_sense &&
if (cmdstatp->have_sense &&
scode == RECOVERED_ERROR
#if ST_RECOVERED_WRITE_FATAL
- && SRpnt->sr_cmnd[0] != WRITE_6
- && SRpnt->sr_cmnd[0] != WRITE_FILEMARKS
+ && SRpnt->cmd[0] != WRITE_6
+ && SRpnt->cmd[0] != WRITE_FILEMARKS
#endif
) {
STp->recover_count++;
DEB(
if (debugging) {
- if (SRpnt->sr_cmnd[0] == READ_6)
+ if (SRpnt->cmd[0] == READ_6)
stp = "read";
- else if (SRpnt->sr_cmnd[0] == WRITE_6)
+ else if (SRpnt->cmd[0] == WRITE_6)
stp = "write";
else
stp = "ioctl";
/* Wakeup from interrupt */
-static void st_sleep_done(struct scsi_cmnd * SCpnt)
+static void st_sleep_done(void *data, char *sense, int result, int resid)
{
- struct scsi_tape *STp = container_of(SCpnt->request->rq_disk->private_data,
- struct scsi_tape, driver);
+ struct st_request *SRpnt = data;
+ struct scsi_tape *STp = SRpnt->stp;
- (STp->buffer)->cmdstat.midlevel_result = SCpnt->result;
- SCpnt->request->rq_status = RQ_SCSI_DONE;
+ memcpy(SRpnt->sense, sense, SCSI_SENSE_BUFFERSIZE);
+ (STp->buffer)->cmdstat.midlevel_result = SRpnt->result = result;
DEB( STp->write_pending = 0; )
- if (SCpnt->request->waiting)
- complete(SCpnt->request->waiting);
+ if (SRpnt->waiting)
+ complete(SRpnt->waiting);
+}
+
+static struct st_request *st_allocate_request(void)
+{
+ return kzalloc(sizeof(struct st_request), GFP_KERNEL);
+}
+
+static void st_release_request(struct st_request *streq)
+{
+ kfree(streq);
}
/* Do the scsi command. Waits until command performed if do_wait is true.
Otherwise write_behind_check() is used to check that the command
has finished. */
-static struct scsi_request *
-st_do_scsi(struct scsi_request * SRpnt, struct scsi_tape * STp, unsigned char *cmd,
+static struct st_request *
+st_do_scsi(struct st_request * SRpnt, struct scsi_tape * STp, unsigned char *cmd,
int bytes, int direction, int timeout, int retries, int do_wait)
{
struct completion *waiting;
- unsigned char *bp;
/* if async, make sure there's no command outstanding */
if (!do_wait && ((STp->buffer)->last_SRpnt)) {
}
if (SRpnt == NULL) {
- SRpnt = scsi_allocate_request(STp->device, GFP_ATOMIC);
+ SRpnt = st_allocate_request();
if (SRpnt == NULL) {
DEBC( printk(KERN_ERR "%s: Can't get SCSI request.\n",
tape_name(STp)); );
(STp->buffer)->syscall_result = (-EBUSY);
return NULL;
}
+ SRpnt->stp = STp;
}
/* If async IO, set last_SRpnt. This ptr tells write_behind_check
waiting = &STp->wait;
init_completion(waiting);
- SRpnt->sr_use_sg = STp->buffer->do_dio || (bytes > (STp->buffer)->frp[0].length);
- if (SRpnt->sr_use_sg) {
- if (!STp->buffer->do_dio)
- buf_to_sg(STp->buffer, bytes);
- SRpnt->sr_use_sg = (STp->buffer)->sg_segs;
- bp = (char *) &((STp->buffer)->sg[0]);
- } else
- bp = (STp->buffer)->b_data;
- SRpnt->sr_data_direction = direction;
- SRpnt->sr_cmd_len = 0;
- SRpnt->sr_request->waiting = waiting;
- SRpnt->sr_request->rq_status = RQ_SCSI_BUSY;
- SRpnt->sr_request->rq_disk = STp->disk;
- SRpnt->sr_request->end_io = blk_end_sync_rq;
- STp->buffer->cmdstat.have_sense = 0;
+ SRpnt->waiting = waiting;
- scsi_do_req(SRpnt, (void *) cmd, bp, bytes,
- st_sleep_done, timeout, retries);
+ if (!STp->buffer->do_dio)
+ buf_to_sg(STp->buffer, bytes);
- if (do_wait) {
+ memcpy(SRpnt->cmd, cmd, sizeof(SRpnt->cmd));
+ STp->buffer->cmdstat.have_sense = 0;
+ STp->buffer->syscall_result = 0;
+
+ if (scsi_execute_async(STp->device, cmd, direction,
+ &((STp->buffer)->sg[0]), bytes, (STp->buffer)->sg_segs,
+ timeout, retries, SRpnt, st_sleep_done, GFP_KERNEL)) {
+ /* could not allocate the buffer or request was too large */
+ (STp->buffer)->syscall_result = (-EBUSY);
+ (STp->buffer)->last_SRpnt = NULL;
+ }
+ else if (do_wait) {
wait_for_completion(waiting);
- SRpnt->sr_request->waiting = NULL;
- if (SRpnt->sr_request->rq_status != RQ_SCSI_DONE)
- SRpnt->sr_result |= (DRIVER_ERROR << 24);
+ SRpnt->waiting = NULL;
(STp->buffer)->syscall_result = st_chk_result(STp, SRpnt);
}
+
return SRpnt;
}
struct st_buffer *STbuffer;
struct st_partstat *STps;
struct st_cmdstatus *cmdstatp;
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
STbuffer = STp->buffer;
if (!STbuffer->writing)
wait_for_completion(&(STp->wait));
SRpnt = STbuffer->last_SRpnt;
STbuffer->last_SRpnt = NULL;
- SRpnt->sr_request->waiting = NULL;
- if (SRpnt->sr_request->rq_status != RQ_SCSI_DONE)
- SRpnt->sr_result |= (DRIVER_ERROR << 24);
+ SRpnt->waiting = NULL;
(STp->buffer)->syscall_result = st_chk_result(STp, SRpnt);
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
STbuffer->buffer_bytes -= STbuffer->writing;
STps = &(STp->ps[STp->partition]);
it messes up the block number). */
static int cross_eof(struct scsi_tape * STp, int forward)
{
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
unsigned char cmd[MAX_COMMAND_SIZE];
cmd[0] = SPACE;
if (!SRpnt)
return (STp->buffer)->syscall_result;
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
if ((STp->buffer)->cmdstat.midlevel_result != 0)
int offset, transfer, blks;
int result;
unsigned char cmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
struct st_partstat *STps;
result = write_behind_check(STp);
STp->dirty = 0;
(STp->buffer)->buffer_bytes = 0;
}
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
}
return result;
}
-/* Lock or unlock the drive door. Don't use when scsi_request allocated. */
+/* Lock or unlock the drive door. Don't use when st_request allocated. */
static int do_door_lock(struct scsi_tape * STp, int do_lock)
{
int retval, cmd;
int attentions, waits, max_wait, scode;
int retval = CHKRES_READY, new_session = 0;
unsigned char cmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt = NULL;
+ struct st_request *SRpnt = NULL;
struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat;
max_wait = do_wait ? ST_BLOCK_SECONDS : 0;
}
if (SRpnt != NULL)
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
return retval;
}
int i, retval, new_session = 0, do_wait;
unsigned char cmd[MAX_COMMAND_SIZE], saved_cleaning;
unsigned short st_flags = filp->f_flags;
- struct scsi_request *SRpnt = NULL;
+ struct st_request *SRpnt = NULL;
struct st_modedef *STm;
struct st_partstat *STps;
char *name = tape_name(STp);
goto err_out;
}
- if (!SRpnt->sr_result && !STp->buffer->cmdstat.have_sense) {
+ if (!SRpnt->result && !STp->buffer->cmdstat.have_sense) {
STp->max_block = ((STp->buffer)->b_data[1] << 16) |
((STp->buffer)->b_data[2] << 8) | (STp->buffer)->b_data[3];
STp->min_block = ((STp->buffer)->b_data[4] << 8) |
}
STp->drv_write_prot = ((STp->buffer)->b_data[2] & 0x80) != 0;
}
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
STp->inited = 1;
{
int result = 0, result2;
unsigned char cmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
struct scsi_tape *STp = filp->private_data;
struct st_modedef *STm = &(STp->modes[STp->current_mode]);
struct st_partstat *STps = &(STp->ps[STp->partition]);
cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) &&
(!cmdstatp->remainder_valid || cmdstatp->uremainder64 == 0))) {
/* Write successful at EOM */
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
if (STps->drv_file >= 0)
STps->drv_file++;
STps->eof = ST_FM;
}
else { /* Write error */
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
printk(KERN_ERR "%s: Error on write filemark.\n", name);
if (result == 0)
i = STp->try_dio && try_rdio;
else
i = STp->try_dio && try_wdio;
+
if (i && ((unsigned long)buf & queue_dma_alignment(
STp->device->request_queue)) == 0) {
- i = st_map_user_pages(&(STbp->sg[0]), STbp->use_sg,
- (unsigned long)buf, count, (is_read ? READ : WRITE),
- STp->max_pfn);
+ i = sgl_map_user_pages(&(STbp->sg[0]), STbp->use_sg,
+ (unsigned long)buf, count, (is_read ? READ : WRITE));
if (i > 0) {
STbp->do_dio = i;
STbp->buffer_bytes = 0; /* can be used as transfer counter */
/* Can be called more than once after each setup_buffer() */
-static void release_buffering(struct scsi_tape *STp)
+static void release_buffering(struct scsi_tape *STp, int is_read)
{
struct st_buffer *STbp;
STbp = STp->buffer;
if (STbp->do_dio) {
- sgl_unmap_user_pages(&(STbp->sg[0]), STbp->do_dio, 0);
+ sgl_unmap_user_pages(&(STbp->sg[0]), STbp->do_dio, is_read);
STbp->do_dio = 0;
+ STbp->sg_segs = 0;
}
}
int async_write;
unsigned char cmd[MAX_COMMAND_SIZE];
const char __user *b_point;
- struct scsi_request *SRpnt = NULL;
+ struct st_request *SRpnt = NULL;
struct scsi_tape *STp = filp->private_data;
struct st_modedef *STm;
struct st_partstat *STps;
retval = STbp->syscall_result;
goto out;
}
- if (async_write) {
+ if (async_write && !STbp->syscall_result) {
STbp->writing = transfer;
STp->dirty = !(STbp->writing ==
STbp->buffer_bytes);
} else {
count += do_count;
STps->drv_block = (-1); /* Too cautious? */
- retval = (-EIO);
+ retval = STbp->syscall_result;
}
}
out:
if (SRpnt != NULL)
- scsi_release_request(SRpnt);
- release_buffering(STp);
+ st_release_request(SRpnt);
+ release_buffering(STp, 0);
up(&STp->lock);
return retval;
Does release user buffer mapping if it is set.
*/
static long read_tape(struct scsi_tape *STp, long count,
- struct scsi_request ** aSRpnt)
+ struct st_request ** aSRpnt)
{
int transfer, blks, bytes;
unsigned char cmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
struct st_modedef *STm;
struct st_partstat *STps;
struct st_buffer *STbp;
SRpnt = *aSRpnt;
SRpnt = st_do_scsi(SRpnt, STp, cmd, bytes, DMA_FROM_DEVICE,
STp->device->timeout, MAX_RETRIES, 1);
- release_buffering(STp);
+ release_buffering(STp, 1);
*aSRpnt = SRpnt;
if (!SRpnt)
return STbp->syscall_result;
retval = 1;
DEBC(printk(ST_DEB_MSG "%s: Sense: %2x %2x %2x %2x %2x %2x %2x %2x\n",
name,
- SRpnt->sr_sense_buffer[0], SRpnt->sr_sense_buffer[1],
- SRpnt->sr_sense_buffer[2], SRpnt->sr_sense_buffer[3],
- SRpnt->sr_sense_buffer[4], SRpnt->sr_sense_buffer[5],
- SRpnt->sr_sense_buffer[6], SRpnt->sr_sense_buffer[7]));
+ SRpnt->sense[0], SRpnt->sense[1],
+ SRpnt->sense[2], SRpnt->sense[3],
+ SRpnt->sense[4], SRpnt->sense[5],
+ SRpnt->sense[6], SRpnt->sense[7]));
if (cmdstatp->have_sense) {
if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK)
}
STbp->buffer_bytes = bytes - transfer;
} else {
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = *aSRpnt = NULL;
if (transfer == blks) { /* We did not get anything, error */
printk(KERN_NOTICE "%s: Incorrect block size.\n", name);
ssize_t retval = 0;
ssize_t i, transfer;
int special, do_dio = 0;
- struct scsi_request *SRpnt = NULL;
+ struct st_request *SRpnt = NULL;
struct scsi_tape *STp = filp->private_data;
struct st_modedef *STm;
struct st_partstat *STps;
out:
if (SRpnt != NULL) {
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
}
if (do_dio) {
- release_buffering(STp);
+ release_buffering(STp, 1);
STbp->buffer_bytes = 0;
}
up(&STp->lock);
static int read_mode_page(struct scsi_tape *STp, int page, int omit_block_descs)
{
unsigned char cmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt = NULL;
+ struct st_request *SRpnt = NULL;
memset(cmd, 0, MAX_COMMAND_SIZE);
cmd[0] = MODE_SENSE;
if (SRpnt == NULL)
return (STp->buffer)->syscall_result;
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
return (STp->buffer)->syscall_result;
}
{
int pgo;
unsigned char cmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt = NULL;
+ struct st_request *SRpnt = NULL;
memset(cmd, 0, MAX_COMMAND_SIZE);
cmd[0] = MODE_SELECT;
if (SRpnt == NULL)
return (STp->buffer)->syscall_result;
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
return (STp->buffer)->syscall_result;
}
DEB( char *name = tape_name(STp); )
unsigned char cmd[MAX_COMMAND_SIZE];
struct st_partstat *STps;
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
if (STp->ready != ST_READY && !load_code) {
if (STp->ready == ST_NO_TAPE)
return (STp->buffer)->syscall_result;
retval = (STp->buffer)->syscall_result;
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
if (!retval) { /* SCSI command successful */
int ioctl_result;
int chg_eof = 1;
unsigned char cmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
struct st_partstat *STps;
int fileno, blkno, at_sm, undone;
int datalen = 0, direction = DMA_NONE;
ioctl_result = (STp->buffer)->syscall_result;
if (!ioctl_result) { /* SCSI command successful */
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
STps->drv_block = blkno;
STps->drv_file = fileno;
/* Try the other possible state of Page Format if not
already tried */
STp->use_pf = !STp->use_pf | PF_TESTED;
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
return st_int_ioctl(STp, cmd_in, arg);
}
if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK)
STps->eof = ST_EOD;
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
}
{
int result;
unsigned char scmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
DEB( char *name = tape_name(STp); )
if (STp->ready != ST_READY)
DEBC(printk(ST_DEB_MSG "%s: Got tape pos. blk %d part %d.\n", name,
*block, *partition));
}
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
return result;
unsigned int blk;
int timeout;
unsigned char scmd[MAX_COMMAND_SIZE];
- struct scsi_request *SRpnt;
+ struct st_request *SRpnt;
DEB( char *name = tape_name(STp); )
if (STp->ready != ST_READY)
result = 0;
}
- scsi_release_request(SRpnt);
+ st_release_request(SRpnt);
SRpnt = NULL;
return result;
static struct st_buffer *
new_tape_buffer(int from_initialization, int need_dma, int max_sg)
{
- int i, got = 0, segs = 0;
+ int i, got = 0;
gfp_t priority;
struct st_buffer *tb;
return NULL;
}
memset(tb, 0, i);
- tb->frp_segs = tb->orig_frp_segs = segs;
+ tb->frp_segs = tb->orig_frp_segs = 0;
tb->use_sg = max_sg;
- if (segs > 0)
- tb->b_data = page_address(tb->sg[0].page);
tb->frp = (struct st_buf_fragment *)(&(tb->sg[0]) + max_sg);
tb->in_use = 1;
priority = GFP_KERNEL | __GFP_NOWARN;
if (need_dma)
priority |= GFP_DMA;
- for (b_size = PAGE_SIZE, order=0;
+ for (b_size = PAGE_SIZE, order=0; order <= 6 &&
b_size < new_size - STbuffer->buffer_size;
order++, b_size *= 2)
; /* empty */
}
STbuffer->frp_segs = STbuffer->orig_frp_segs;
STbuffer->frp_sg_current = 0;
+ STbuffer->sg_segs = 0;
}
struct st_buffer *buffer;
int i, j, mode, dev_num, error;
char *stp;
- u64 bounce_limit;
if (SDp->type != TYPE_TAPE)
return -ENODEV;
return -ENODEV;
}
- i = SDp->host->sg_tablesize;
+ i = min(SDp->request_queue->max_hw_segments,
+ SDp->request_queue->max_phys_segments);
if (st_max_sg_segs < i)
i = st_max_sg_segs;
buffer = new_tape_buffer(1, (SDp->host)->unchecked_isa_dma, i);
tpnt->long_timeout = ST_LONG_TIMEOUT;
tpnt->try_dio = try_direct_io && !SDp->host->unchecked_isa_dma;
- bounce_limit = scsi_calculate_bounce_limit(SDp->host) >> PAGE_SHIFT;
- if (bounce_limit > ULONG_MAX)
- bounce_limit = ULONG_MAX;
- tpnt->max_pfn = bounce_limit;
-
for (i = 0; i < ST_NBR_MODES; i++) {
STm = &(tpnt->modes[i]);
STm->defined = 0;
sdev_printk(KERN_WARNING, SDp,
"Attached scsi tape %s", tape_name(tpnt));
- printk(KERN_WARNING "%s: try direct i/o: %s (alignment %d B), max page reachable by HBA %lu\n",
+ printk(KERN_WARNING "%s: try direct i/o: %s (alignment %d B)\n",
tape_name(tpnt), tpnt->try_dio ? "yes" : "no",
- queue_dma_alignment(SDp->request_queue) + 1, tpnt->max_pfn);
+ queue_dma_alignment(SDp->request_queue) + 1);
return 0;
static void st_intr(struct scsi_cmnd *SCpnt)
{
- scsi_io_completion(SCpnt, (SCpnt->result ? 0: SCpnt->bufflen), 1);
+ /*
+ * The caller should be checking the request's errors
+ * value.
+ */
+ scsi_io_completion(SCpnt, SCpnt->bufflen, 0);
}
/*
return;
}
-
-/* Pin down user pages and put them into a scatter gather list. Returns <= 0 if
- - mapping of all pages not successful
- - any page is above max_pfn
- (i.e., either completely successful or fails)
-*/
-static int st_map_user_pages(struct scatterlist *sgl, const unsigned int max_pages,
- unsigned long uaddr, size_t count, int rw,
- unsigned long max_pfn)
-{
- int i, nr_pages;
-
- nr_pages = sgl_map_user_pages(sgl, max_pages, uaddr, count, rw);
- if (nr_pages <= 0)
- return nr_pages;
-
- for (i=0; i < nr_pages; i++) {
- if (page_to_pfn(sgl[i].page) > max_pfn)
- goto out_unmap;
- }
- return nr_pages;
-
- out_unmap:
- sgl_unmap_user_pages(sgl, nr_pages, 0);
- return 0;
-}
-
-
/* The following functions may be useful for a larger audience. */
static int sgl_map_user_pages(struct scatterlist *sgl, const unsigned int max_pages,
unsigned long uaddr, size_t count, int rw)
projects / powerpc.git / blobdiff