if (!hwif->ide_dma_read(drive))
return ide_started;
break;
-#ifdef CONFIG_BLK_DEV_IDE_TCQ
- case WIN_READDMA_QUEUED:
- case WIN_READDMA_QUEUED_EXT:
- return __ide_dma_queued_read(drive);
- case WIN_WRITEDMA_QUEUED:
- case WIN_WRITEDMA_QUEUED_EXT:
- return __ide_dma_queued_write(drive);
-#endif
default:
if (task->handler == NULL)
return ide_stopped;
*/
#ifndef CONFIG_IDE_TASKFILE_IO
-#define task_map_rq(rq, flags) ide_map_buffer((rq), (flags))
-#define task_unmap_rq(rq, buf, flags) ide_unmap_buffer((rq), (buf), (flags))
-
/*
* Handler for command with PIO data-in phase, READ
*/
-/*
- * FIXME before 2.4 enable ...
- * DATA integrity issue upon error. <andre@linux-ide.org>
- */
ide_startstop_t task_in_intr (ide_drive_t *drive)
{
struct request *rq = HWGROUP(drive)->rq;
ide_hwif_t *hwif = HWIF(drive);
char *pBuf = NULL;
u8 stat;
- unsigned long flags;
if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),DATA_READY,BAD_R_STAT)) {
if (stat & (ERR_STAT|DRQ_STAT)) {
-#if 0
- DTF("%s: attempting to recover last " \
- "sector counter status=0x%02x\n",
- drive->name, stat);
- /*
- * Expect a BUG BOMB if we attempt to rewind the
- * offset in the BH aka PAGE in the current BLOCK
- * segment. This is different than the HOST segment.
- */
-#endif
- if (!rq->bio)
- rq->current_nr_sectors++;
return DRIVER(drive)->error(drive, "task_in_intr", stat);
}
if (!(stat & BUSY_STAT)) {
return ide_started;
}
}
-#if 0
- /*
- * Holding point for a brain dump of a thought :-/
- */
-
- if (!OK_STAT(stat,DRIVE_READY,drive->bad_wstat)) {
- DTF("%s: READ attempting to recover last " \
- "sector counter status=0x%02x\n",
- drive->name, stat);
- rq->current_nr_sectors++;
- return DRIVER(drive)->error(drive, "task_in_intr", stat);
- }
- if (!rq->current_nr_sectors)
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- return ide_stopped;
-
- if (--rq->current_nr_sectors <= 0)
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- return ide_stopped;
-#endif
-
- pBuf = task_map_rq(rq, &flags);
+ pBuf = rq->buffer + task_rq_offset(rq);
DTF("Read: %p, rq->current_nr_sectors: %d, stat: %02x\n",
pBuf, (int) rq->current_nr_sectors, stat);
taskfile_input_data(drive, pBuf, SECTOR_WORDS);
- task_unmap_rq(rq, pBuf, &flags);
- /*
- * FIXME :: We really can not legally get a new page/bh
- * regardless, if this is the end of our segment.
- * BH walking or segment can only be updated after we have a good
- * hwif->INB(IDE_STATUS_REG); return.
- */
+
+ /* FIXME: check drive status */
if (--rq->current_nr_sectors <= 0)
if (!DRIVER(drive)->end_request(drive, 1, 0))
return ide_stopped;
char *pBuf = NULL;
unsigned int msect = drive->mult_count;
unsigned int nsect;
- unsigned long flags;
u8 stat;
if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),DATA_READY,BAD_R_STAT)) {
if (stat & (ERR_STAT|DRQ_STAT)) {
- if (!rq->bio) {
- rq->current_nr_sectors += drive->mult_count;
- /*
- * NOTE: could rewind beyond beginning :-/
- */
- } else {
- printk(KERN_ERR "%s: MULTI-READ assume all data " \
- "transfered is bad status=0x%02x\n",
- drive->name, stat);
- }
return DRIVER(drive)->error(drive, "task_mulin_intr", stat);
}
/* no data yet, so wait for another interrupt */
nsect = rq->current_nr_sectors;
if (nsect > msect)
nsect = msect;
- pBuf = task_map_rq(rq, &flags);
+ pBuf = rq->buffer + task_rq_offset(rq);
DTF("Multiread: %p, nsect: %d, msect: %d, " \
" rq->current_nr_sectors: %d\n",
pBuf, nsect, msect, rq->current_nr_sectors);
taskfile_input_data(drive, pBuf, nsect * SECTOR_WORDS);
- task_unmap_rq(rq, pBuf, &flags);
rq->errors = 0;
rq->current_nr_sectors -= nsect;
msect -= nsect;
- /*
- * FIXME :: We really can not legally get a new page/bh
- * regardless, if this is the end of our segment.
- * BH walking or segment can only be updated after we have a
- * good hwif->INB(IDE_STATUS_REG); return.
- */
+
+ /* FIXME: check drive status */
if (!rq->current_nr_sectors) {
if (!DRIVER(drive)->end_request(drive, 1, 0))
return ide_stopped;
*/
ide_startstop_t pre_task_out_intr (ide_drive_t *drive, struct request *rq)
{
- char *pBuf = NULL;
- unsigned long flags;
ide_startstop_t startstop;
if (ide_wait_stat(&startstop, drive, DATA_READY,
return startstop;
}
/* For Write_sectors we need to stuff the first sector */
- pBuf = task_map_rq(rq, &flags);
- taskfile_output_data(drive, pBuf, SECTOR_WORDS);
+ taskfile_output_data(drive, rq->buffer + task_rq_offset(rq), SECTOR_WORDS);
rq->current_nr_sectors--;
- task_unmap_rq(rq, pBuf, &flags);
return ide_started;
}
ide_hwif_t *hwif = HWIF(drive);
struct request *rq = HWGROUP(drive)->rq;
char *pBuf = NULL;
- unsigned long flags;
u8 stat;
if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), DRIVE_READY, drive->bad_wstat)) {
- DTF("%s: WRITE attempting to recover last " \
- "sector counter status=0x%02x\n",
- drive->name, stat);
- rq->current_nr_sectors++;
return DRIVER(drive)->error(drive, "task_out_intr", stat);
}
/*
return ide_stopped;
if ((rq->current_nr_sectors==1) ^ (stat & DRQ_STAT)) {
rq = HWGROUP(drive)->rq;
- pBuf = task_map_rq(rq, &flags);
+ pBuf = rq->buffer + task_rq_offset(rq);
DTF("write: %p, rq->current_nr_sectors: %d\n",
pBuf, (int) rq->current_nr_sectors);
taskfile_output_data(drive, pBuf, SECTOR_WORDS);
- task_unmap_rq(rq, pBuf, &flags);
rq->errors = 0;
rq->current_nr_sectors--;
}
EXPORT_SYMBOL(task_out_intr);
-#undef ALTERNATE_STATE_DIAGRAM_MULTI_OUT
-
ide_startstop_t pre_task_mulout_intr (ide_drive_t *drive, struct request *rq)
{
-#ifdef ALTERNATE_STATE_DIAGRAM_MULTI_OUT
- ide_hwif_t *hwif = HWIF(drive);
- char *pBuf = NULL;
- unsigned int nsect = 0, msect = drive->mult_count;
- u8 stat;
- unsigned long flags;
-#endif /* ALTERNATE_STATE_DIAGRAM_MULTI_OUT */
-
ide_task_t *args = rq->special;
ide_startstop_t startstop;
-#if 0
- /*
- * assign private copy for multi-write
- */
- memcpy(&HWGROUP(drive)->wrq, rq, sizeof(struct request));
-#endif
-
if (ide_wait_stat(&startstop, drive, DATA_READY,
drive->bad_wstat, WAIT_DRQ)) {
printk(KERN_ERR "%s: no DRQ after issuing %s\n",
drive->addressing ? "MULTWRITE_EXT" : "MULTWRITE");
return startstop;
}
-#ifdef ALTERNATE_STATE_DIAGRAM_MULTI_OUT
-
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
- pBuf = task_map_rq(rq, &flags);
- DTF("Pre-Multiwrite: %p, nsect: %d, msect: %d, " \
- "rq->current_nr_sectors: %ld\n",
- pBuf, nsect, msect, rq->current_nr_sectors);
- msect -= nsect;
- taskfile_output_data(drive, pBuf, nsect * SECTOR_WORDS);
- task_unmap_rq(rq, pBuf, &flags);
- rq->current_nr_sectors -= nsect;
- if (!rq->current_nr_sectors) {
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- if (!rq->bio) {
- stat = hwif->INB(IDE_STATUS_REG);
- return ide_stopped;
- }
- }
- } while (msect);
- rq->errors = 0;
- return ide_started;
-#else /* ! ALTERNATE_STATE_DIAGRAM_MULTI_OUT */
if (!(drive_is_ready(drive))) {
int i;
for (i=0; i<100; i++) {
* move the DATA-TRANSFER T-Bar as BSY != 0. <andre@linux-ide.org>
*/
return args->handler(drive);
-#endif /* ALTERNATE_STATE_DIAGRAM_MULTI_OUT */
}
EXPORT_SYMBOL(pre_task_mulout_intr);
-/*
- * FIXME before enabling in 2.4 ... DATA integrity issue upon error.
- */
/*
* Handler for command write multiple
* Called directly from execute_drive_cmd for the first bunch of sectors,
u8 stat = hwif->INB(IDE_STATUS_REG);
struct request *rq = HWGROUP(drive)->rq;
char *pBuf = NULL;
- ide_startstop_t startstop = ide_stopped;
unsigned int msect = drive->mult_count;
unsigned int nsect;
- unsigned long flags;
- /*
- * (ks/hs): Handle last IRQ on multi-sector transfer,
- * occurs after all data was sent in this chunk
- */
- if (rq->current_nr_sectors == 0) {
+ if (!OK_STAT(stat, DATA_READY, BAD_R_STAT) || !rq->current_nr_sectors) {
if (stat & (ERR_STAT|DRQ_STAT)) {
- if (!rq->bio) {
- rq->current_nr_sectors += drive->mult_count;
- /*
- * NOTE: could rewind beyond beginning :-/
- */
- } else {
- printk(KERN_ERR "%s: MULTI-WRITE assume all data " \
- "transfered is bad status=0x%02x\n",
- drive->name, stat);
- }
return DRIVER(drive)->error(drive, "task_mulout_intr", stat);
}
- if (!rq->bio)
+ /* Handle last IRQ, occurs after all data was sent. */
+ if (!rq->current_nr_sectors) {
DRIVER(drive)->end_request(drive, 1, 0);
- return startstop;
- }
- /*
- * DON'T be lazy code the above and below togather !!!
- */
- if (!OK_STAT(stat,DATA_READY,BAD_R_STAT)) {
- if (stat & (ERR_STAT|DRQ_STAT)) {
- if (!rq->bio) {
- rq->current_nr_sectors += drive->mult_count;
- /*
- * NOTE: could rewind beyond beginning :-/
- */
- } else {
- printk("%s: MULTI-WRITE assume all data " \
- "transfered is bad status=0x%02x\n",
- drive->name, stat);
- }
- return DRIVER(drive)->error(drive, "task_mulout_intr", stat);
+ return ide_stopped;
}
/* no data yet, so wait for another interrupt */
if (HWGROUP(drive)->handler == NULL)
return ide_started;
}
-#ifndef ALTERNATE_STATE_DIAGRAM_MULTI_OUT
if (HWGROUP(drive)->handler != NULL) {
unsigned long lflags;
spin_lock_irqsave(&ide_lock, lflags);
del_timer(&HWGROUP(drive)->timer);
spin_unlock_irqrestore(&ide_lock, lflags);
}
-#endif /* ALTERNATE_STATE_DIAGRAM_MULTI_OUT */
do {
nsect = rq->current_nr_sectors;
if (nsect > msect)
nsect = msect;
- pBuf = task_map_rq(rq, &flags);
+ pBuf = rq->buffer + task_rq_offset(rq);
DTF("Multiwrite: %p, nsect: %d, msect: %d, " \
"rq->current_nr_sectors: %ld\n",
pBuf, nsect, msect, rq->current_nr_sectors);
msect -= nsect;
taskfile_output_data(drive, pBuf, nsect * SECTOR_WORDS);
- task_unmap_rq(rq, pBuf, &flags);
rq->current_nr_sectors -= nsect;
- /*
- * FIXME :: We really can not legally get a new page/bh
- * regardless, if this is the end of our segment.
- * BH walking or segment can only be updated after we
- * have a good hwif->INB(IDE_STATUS_REG); return.
- */
+
+ /* FIXME: check drive status */
if (!rq->current_nr_sectors) {
if (!DRIVER(drive)->end_request(drive, 1, 0))
if (!rq->bio)
else
rq.nr_sectors = data_size / SECTOR_SIZE;
+ if (!rq.nr_sectors) {
+ printk(KERN_ERR "%s: in/out command without data\n",
+ drive->name);
+ return -EFAULT;
+ }
+
rq.hard_nr_sectors = rq.nr_sectors;
rq.hard_cur_sectors = rq.current_nr_sectors = rq.nr_sectors;
}
char *pBuf = NULL;
int retries = 5;
- if (rq->current_nr_sectors == 0)
- return DRIVER(drive)->error(drive, "flagged_task_in_intr (no data requested)", stat);
-
if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) {
if (stat & ERR_STAT) {
return DRIVER(drive)->error(drive, "flagged_task_in_intr", stat);
int retries = 5;
unsigned int msect, nsect;
- if (rq->current_nr_sectors == 0)
- return DRIVER(drive)->error(drive, "flagged_task_mulin_intr (no data requested)", stat);
-
msect = drive->mult_count;
if (msect == 0)
return DRIVER(drive)->error(drive, "flagged_task_mulin_intr (multimode not set)", stat);
*/
ide_startstop_t flagged_pre_task_out_intr (ide_drive_t *drive, struct request *rq)
{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
ide_startstop_t startstop;
- if (!rq->current_nr_sectors) {
- return DRIVER(drive)->error(drive, "flagged_pre_task_out_intr (write data not specified)", stat);
- }
-
if (ide_wait_stat(&startstop, drive, DATA_READY,
BAD_W_STAT, WAIT_DRQ)) {
printk(KERN_ERR "%s: No DRQ bit after issuing write command.\n", drive->name);
ide_startstop_t startstop;
unsigned int msect, nsect;
- if (!rq->current_nr_sectors)
- return DRIVER(drive)->error(drive, "flagged_pre_task_mulout_intr (write data not specified)", stat);
-
msect = drive->mult_count;
if (msect == 0)
return DRIVER(drive)->error(drive, "flagged_pre_task_mulout_intr (multimode not set)", stat);
git://git.onelab.eu / linux-2.6.git / blobdiff