#define DEBUG_TASKFILE 0 /* unset when fixed */
-#if DEBUG_TASKFILE
-#define DTF(x...) printk(x)
-#else
-#define DTF(x...)
-#endif
-
static void ata_bswap_data (void *buffer, int wcount)
{
u16 *p = buffer;
hwif->OUTB(taskfile->high_cylinder, IDE_HCYL_REG);
hwif->OUTB((taskfile->device_head & HIHI) | drive->select.all, IDE_SELECT_REG);
-#ifdef CONFIG_IDE_TASKFILE_IO
+
if (task->handler != NULL) {
if (task->prehandler != NULL) {
hwif->OUTBSYNC(drive, taskfile->command, IDE_COMMAND_REG);
ide_execute_command(drive, taskfile->command, task->handler, WAIT_WORSTCASE, NULL);
return ide_started;
}
-#else
- if (task->handler != NULL) {
- ide_execute_command(drive, taskfile->command, task->handler, WAIT_WORSTCASE, NULL);
- if (task->prehandler != NULL)
- return task->prehandler(drive, task->rq);
- return ide_started;
- }
-#endif
if (!drive->using_dma)
return ide_stopped;
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;
local_irq_enable();
if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) {
- DTF("%s: command opcode 0x%02x\n", drive->name,
- args->tfRegister[IDE_COMMAND_OFFSET]);
return DRIVER(drive)->error(drive, "task_no_data_intr", stat);
/* calls ide_end_drive_cmd */
}
EXPORT_SYMBOL(task_no_data_intr);
-/*
- * old taskfile PIO handlers, to be killed as soon as possible.
- */
-#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)
+static void task_buffer_sectors(ide_drive_t *drive, struct request *rq,
+ unsigned nsect, unsigned rw)
{
- 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)) {
- DTF("task_in_intr to Soon wait for next interrupt\n");
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
- 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
+ char *buf = rq->buffer + blk_rq_offset(rq);
- pBuf = task_map_rq(rq, &flags);
- 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.
- */
- if (--rq->current_nr_sectors <= 0)
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- return ide_stopped;
- /*
- * ERM, it is techincally legal to leave/exit here but it makes
- * a mess of the code ...
- */
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
+ rq->sector += nsect;
+ rq->current_nr_sectors -= nsect;
+ rq->nr_sectors -= nsect;
+ __task_sectors(drive, buf, nsect, rw);
}
-EXPORT_SYMBOL(task_in_intr);
-
-/*
- * Handler for command with Read Multiple
- */
-ide_startstop_t task_mulin_intr (ide_drive_t *drive)
+static inline void task_buffer_multi_sectors(ide_drive_t *drive,
+ struct request *rq, unsigned rw)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- unsigned int msect = drive->mult_count;
- unsigned int nsect;
- unsigned long flags;
- u8 stat;
+ unsigned int msect = drive->mult_count, nsect;
- 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 */
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
+ nsect = rq->current_nr_sectors;
+ if (nsect > msect)
+ nsect = msect;
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
- pBuf = task_map_rq(rq, &flags);
- 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.
- */
- if (!rq->current_nr_sectors) {
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- return ide_stopped;
- }
- } while (msect);
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
+ task_buffer_sectors(drive, rq, nsect, rw);
}
-EXPORT_SYMBOL(task_mulin_intr);
-
-/*
- * VERIFY ME before 2.4 ... unexpected race is possible based on details
- * RMK with 74LS245/373/374 TTL buffer logic because of passthrough.
- */
-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,
- drive->bad_wstat, WAIT_DRQ)) {
- printk(KERN_ERR "%s: no DRQ after issuing WRITE%s\n",
- drive->name,
- drive->addressing ? "_EXT" : "");
- 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);
- rq->current_nr_sectors--;
- task_unmap_rq(rq, pBuf, &flags);
- return ide_started;
-}
-
-EXPORT_SYMBOL(pre_task_out_intr);
-
-/*
- * Handler for command with PIO data-out phase WRITE
- *
- * WOOHOO this is a CORRECT STATE DIAGRAM NOW, <andre@linux-ide.org>
- */
-ide_startstop_t task_out_intr (ide_drive_t *drive)
+#ifdef CONFIG_IDE_TASKFILE_IO
+static void task_sectors(ide_drive_t *drive, struct request *rq,
+ unsigned nsect, unsigned rw)
{
- 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);
- }
- /*
- * Safe to update request for partial completions.
- * We have a good STATUS CHECK!!!
- */
- if (!rq->current_nr_sectors)
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- return ide_stopped;
- if ((rq->current_nr_sectors==1) ^ (stat & DRQ_STAT)) {
- rq = HWGROUP(drive)->rq;
- pBuf = task_map_rq(rq, &flags);
- 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);
+ if (rq->cbio) { /* fs request */
rq->errors = 0;
- rq->current_nr_sectors--;
- }
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
+ task_bio_sectors(drive, rq, nsect, rw);
+ } else /* task request */
+ task_buffer_sectors(drive, rq, nsect, rw);
}
-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)
+static inline void task_bio_multi_sectors(ide_drive_t *drive,
+ struct request *rq, unsigned rw)
{
-#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->name,
- drive->addressing ? "MULTWRITE_EXT" : "MULTWRITE");
- return startstop;
- }
-#ifdef ALTERNATE_STATE_DIAGRAM_MULTI_OUT
+ unsigned int nsect, msect = drive->mult_count;
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++) {
- if (drive_is_ready(drive))
- break;
- }
- }
-
- /*
- * WARNING :: if the drive as not acked good status we may not
- * 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,
- * afterwards only by the ISR
- */
-ide_startstop_t task_mulout_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- 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 (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)
- 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);
- }
- /* no data yet, so wait for another interrupt */
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
-#ifndef ALTERNATE_STATE_DIAGRAM_MULTI_OUT
- if (HWGROUP(drive)->handler != NULL) {
- unsigned long lflags;
- spin_lock_irqsave(&ide_lock, lflags);
- HWGROUP(drive)->handler = NULL;
- del_timer(&HWGROUP(drive)->timer);
- spin_unlock_irqrestore(&ide_lock, lflags);
- }
-#endif /* ALTERNATE_STATE_DIAGRAM_MULTI_OUT */
+ task_bio_sectors(drive, rq, nsect, rw);
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
- pBuf = task_map_rq(rq, &flags);
- 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.
- */
- if (!rq->current_nr_sectors) {
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- if (!rq->bio)
- return ide_stopped;
- }
+ if (!rq->nr_sectors)
+ msect = 0;
+ else
+ msect -= nsect;
} while (msect);
- rq->errors = 0;
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
}
-EXPORT_SYMBOL(task_mulout_intr);
-
-#else /* !CONFIG_IDE_TASKFILE_IO */
+static void task_multi_sectors(ide_drive_t *drive,
+ struct request *rq, unsigned rw)
+{
+ if (rq->cbio) { /* fs request */
+ rq->errors = 0;
+ task_bio_multi_sectors(drive, rq, rw);
+ } else /* task request */
+ task_buffer_multi_sectors(drive, rq, rw);
+}
+#else
+# define task_sectors(d, rq, nsect, rw) task_buffer_sectors(d, rq, nsect, rw)
+# define task_multi_sectors(d, rq, rw) task_buffer_multi_sectors(d, rq, rw)
+#endif /* CONFIG_IDE_TASKFILE_IO */
static u8 wait_drive_not_busy(ide_drive_t *drive)
{
return stat;
}
+#ifdef CONFIG_IDE_TASKFILE_IO
+static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
+ const char *s, u8 stat, unsigned cur_bad)
+{
+ if (rq->bio) {
+ int sectors = rq->hard_nr_sectors - rq->nr_sectors - cur_bad;
+
+ if (sectors > 0)
+ drive->driver->end_request(drive, 1, sectors);
+ }
+ return drive->driver->error(drive, s, stat);
+}
+#else
+# define task_error(d, rq, s, stat, cur_bad) drive->driver->error(d, s, stat)
+#endif
+
+static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
+{
+ if (rq->flags & REQ_DRIVE_TASKFILE) {
+ ide_task_t *task = rq->special;
+
+ if (task->tf_out_flags.all) {
+ u8 err = drive->hwif->INB(IDE_ERROR_REG);
+ ide_end_drive_cmd(drive, stat, err);
+ return;
+ }
+ }
+ drive->driver->end_request(drive, 1, rq->hard_nr_sectors);
+}
+
/*
* Handler for command with PIO data-in phase (Read).
*/
ide_startstop_t task_in_intr (ide_drive_t *drive)
{
struct request *rq = HWGROUP(drive)->rq;
- u8 stat, good_stat;
+ u8 stat = HWIF(drive)->INB(IDE_STATUS_REG);
- good_stat = DATA_READY;
- stat = HWIF(drive)->INB(IDE_STATUS_REG);
-check_status:
- if (!OK_STAT(stat, good_stat, BAD_R_STAT)) {
+ if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) {
if (stat & (ERR_STAT | DRQ_STAT))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
- /* BUSY_STAT: No data yet, so wait for another IRQ. */
+ return task_error(drive, rq, __FUNCTION__, stat, 0);
+ /* No data yet, so wait for another IRQ. */
ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
- /*
- * Complete previously submitted bios (if any).
- * Status was already verifyied.
- */
- while (rq->bio != rq->cbio)
- if (!DRIVER(drive)->end_request(drive, 1, bio_sectors(rq->bio)))
- return ide_stopped;
- /* Complete rq->buffer based request (ioctls). */
- if (!rq->bio && !rq->nr_sectors) {
- ide_end_drive_cmd(drive, stat, HWIF(drive)->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- rq->errors = 0;
task_sectors(drive, rq, 1, IDE_PIO_IN);
/* If it was the last datablock check status and finish transfer. */
if (!rq->nr_sectors) {
- good_stat = 0;
stat = wait_drive_not_busy(drive);
- goto check_status;
+ if (!OK_STAT(stat, 0, BAD_R_STAT))
+ return task_error(drive, rq, __FUNCTION__, stat, 1);
+ task_end_request(drive, rq, stat);
+ return ide_stopped;
}
/* Still data left to transfer. */
ide_startstop_t task_mulin_intr (ide_drive_t *drive)
{
struct request *rq = HWGROUP(drive)->rq;
- unsigned int msect = drive->mult_count;
- unsigned int nsect;
- u8 stat, good_stat;
+ u8 stat = HWIF(drive)->INB(IDE_STATUS_REG);
- good_stat = DATA_READY;
- stat = HWIF(drive)->INB(IDE_STATUS_REG);
-check_status:
- if (!OK_STAT(stat, good_stat, BAD_R_STAT)) {
+ if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) {
if (stat & (ERR_STAT | DRQ_STAT))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
- /* BUSY_STAT: No data yet, so wait for another IRQ. */
+ return task_error(drive, rq, __FUNCTION__, stat, 0);
+ /* No data yet, so wait for another IRQ. */
ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
- /*
- * Complete previously submitted bios (if any).
- * Status was already verifyied.
- */
- while (rq->bio != rq->cbio)
- if (!DRIVER(drive)->end_request(drive, 1, bio_sectors(rq->bio)))
- return ide_stopped;
- /* Complete rq->buffer based request (ioctls). */
- if (!rq->bio && !rq->nr_sectors) {
- ide_end_drive_cmd(drive, stat, HWIF(drive)->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- rq->errors = 0;
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
-
- task_sectors(drive, rq, nsect, IDE_PIO_IN);
-
- if (!rq->nr_sectors)
- msect = 0;
- else
- msect -= nsect;
- } while (msect);
+ task_multi_sectors(drive, rq, IDE_PIO_IN);
/* If it was the last datablock check status and finish transfer. */
if (!rq->nr_sectors) {
- good_stat = 0;
stat = wait_drive_not_busy(drive);
- goto check_status;
+ if (!OK_STAT(stat, 0, BAD_R_STAT))
+ return task_error(drive, rq, __FUNCTION__, stat, drive->mult_count);
+ task_end_request(drive, rq, stat);
+ return ide_stopped;
}
/* Still data left to transfer. */
u8 stat;
stat = HWIF(drive)->INB(IDE_STATUS_REG);
- if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) {
- if ((stat & (ERR_STAT | DRQ_STAT)) ||
- ((stat & WRERR_STAT) && !drive->nowerr))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
- if (stat & BUSY_STAT) {
- /* Not ready yet, so wait for another IRQ. */
- ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
- }
+ if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
+ return task_error(drive, rq, __FUNCTION__, stat, 1);
/* Deal with unexpected ATA data phase. */
- if ((!(stat & DATA_READY) && rq->nr_sectors) ||
- ((stat & DATA_READY) && !rq->nr_sectors))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
+ if (((stat & DRQ_STAT) == 0) ^ !rq->nr_sectors)
+ return task_error(drive, rq, __FUNCTION__, stat, 1);
- /*
- * Complete previously submitted bios (if any).
- * Status was already verifyied.
- */
- while (rq->bio != rq->cbio)
- if (!DRIVER(drive)->end_request(drive, 1, bio_sectors(rq->bio)))
- return ide_stopped;
- /* Complete rq->buffer based request (ioctls). */
- if (!rq->bio && !rq->nr_sectors) {
- ide_end_drive_cmd(drive, stat, HWIF(drive)->INB(IDE_ERROR_REG));
+ if (!rq->nr_sectors) {
+ task_end_request(drive, rq, stat);
return ide_stopped;
}
/* Still data left to transfer. */
- ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
-
- rq->errors = 0;
task_sectors(drive, rq, 1, IDE_PIO_OUT);
+ ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
if (!drive->unmask)
local_irq_disable();
- return task_out_intr(drive);
+ ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
+ task_sectors(drive, rq, 1, IDE_PIO_OUT);
+
+ return ide_started;
}
EXPORT_SYMBOL(pre_task_out_intr);
ide_startstop_t task_mulout_intr (ide_drive_t *drive)
{
struct request *rq = HWGROUP(drive)->rq;
- unsigned int msect = drive->mult_count;
- unsigned int nsect;
u8 stat;
stat = HWIF(drive)->INB(IDE_STATUS_REG);
- if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) {
- if ((stat & (ERR_STAT | DRQ_STAT)) ||
- ((stat & WRERR_STAT) && !drive->nowerr))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
- if (stat & BUSY_STAT) {
- /* Not ready yet, so wait for another IRQ. */
- ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
- }
+ if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
+ return task_error(drive, rq, __FUNCTION__, stat, drive->mult_count);
/* Deal with unexpected ATA data phase. */
- if ((!(stat & DATA_READY) && rq->nr_sectors) ||
- ((stat & DATA_READY) && !rq->nr_sectors))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
+ if (((stat & DRQ_STAT) == 0) ^ !rq->nr_sectors)
+ return task_error(drive, rq, __FUNCTION__, stat, drive->mult_count);
- /*
- * Complete previously submitted bios (if any).
- * Status was already verifyied.
- */
- while (rq->bio != rq->cbio)
- if (!DRIVER(drive)->end_request(drive, 1, bio_sectors(rq->bio)))
- return ide_stopped;
- /* Complete rq->buffer based request (ioctls). */
- if (!rq->bio && !rq->nr_sectors) {
- ide_end_drive_cmd(drive, stat, HWIF(drive)->INB(IDE_ERROR_REG));
+ if (!rq->nr_sectors) {
+ task_end_request(drive, rq, stat);
return ide_stopped;
}
/* Still data left to transfer. */
+ task_multi_sectors(drive, rq, IDE_PIO_OUT);
ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
- rq->errors = 0;
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
-
- task_sectors(drive, rq, nsect, IDE_PIO_OUT);
-
- if (!rq->nr_sectors)
- msect = 0;
- else
- msect -= nsect;
- } while (msect);
-
return ide_started;
}
EXPORT_SYMBOL(task_mulout_intr);
if (!drive->unmask)
local_irq_disable();
- return task_mulout_intr(drive);
+ ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
+ task_multi_sectors(drive, rq, IDE_PIO_OUT);
+
+ return ide_started;
}
EXPORT_SYMBOL(pre_task_mulout_intr);
-#endif /* !CONFIG_IDE_TASKFILE_IO */
-
int ide_diag_taskfile (ide_drive_t *drive, ide_task_t *args, unsigned long data_size, u8 *buf)
{
struct request rq;
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;
}
#define MAX_DMA (256*SECTOR_WORDS)
ide_startstop_t flagged_taskfile(ide_drive_t *, ide_task_t *);
-ide_startstop_t flagged_task_no_data_intr(ide_drive_t *);
-ide_startstop_t flagged_task_in_intr(ide_drive_t *);
-ide_startstop_t flagged_task_mulin_intr(ide_drive_t *);
-ide_startstop_t flagged_pre_task_out_intr(ide_drive_t *, struct request *);
-ide_startstop_t flagged_task_out_intr(ide_drive_t *);
-ide_startstop_t flagged_pre_task_mulout_intr(ide_drive_t *, struct request *);
-ide_startstop_t flagged_task_mulout_intr(ide_drive_t *);
int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
{
int taskin = 0;
int taskout = 0;
u8 io_32bit = drive->io_32bit;
+ char __user *buf = (char __user *)arg;
// printk("IDE Taskfile ...\n");
req_task = kmalloc(tasksize, GFP_KERNEL);
if (req_task == NULL) return -ENOMEM;
memset(req_task, 0, tasksize);
- if (copy_from_user(req_task, (void *) arg, tasksize)) {
+ if (copy_from_user(req_task, buf, tasksize)) {
kfree(req_task);
return -EFAULT;
}
goto abort;
}
memset(outbuf, 0, taskout);
- if (copy_from_user(outbuf, (void *)arg + outtotal, taskout)) {
+ if (copy_from_user(outbuf, buf + outtotal, taskout)) {
err = -EFAULT;
goto abort;
}
goto abort;
}
memset(inbuf, 0, taskin);
- if (copy_from_user(inbuf, (void *)arg + intotal , taskin)) {
+ if (copy_from_user(inbuf, buf + intotal, taskin)) {
err = -EFAULT;
goto abort;
}
err = -EPERM;
goto abort;
}
- if (args.tf_out_flags.all != 0) {
- args.prehandler = &flagged_pre_task_mulout_intr;
- args.handler = &flagged_task_mulout_intr;
- } else {
- args.prehandler = &pre_task_mulout_intr;
- args.handler = &task_mulout_intr;
- }
+ args.prehandler = &pre_task_mulout_intr;
+ args.handler = &task_mulout_intr;
err = ide_diag_taskfile(drive, &args, taskout, outbuf);
break;
case TASKFILE_OUT:
- if (args.tf_out_flags.all != 0) {
- args.prehandler = &flagged_pre_task_out_intr;
- args.handler = &flagged_task_out_intr;
- } else {
- args.prehandler = &pre_task_out_intr;
- args.handler = &task_out_intr;
- }
+ args.prehandler = &pre_task_out_intr;
+ args.handler = &task_out_intr;
err = ide_diag_taskfile(drive, &args, taskout, outbuf);
break;
case TASKFILE_MULTI_IN:
err = -EPERM;
goto abort;
}
- if (args.tf_out_flags.all != 0) {
- args.handler = &flagged_task_mulin_intr;
- } else {
- args.handler = &task_mulin_intr;
- }
+ args.handler = &task_mulin_intr;
err = ide_diag_taskfile(drive, &args, taskin, inbuf);
break;
case TASKFILE_IN:
- if (args.tf_out_flags.all != 0) {
- args.handler = &flagged_task_in_intr;
- } else {
- args.handler = &task_in_intr;
- }
+ args.handler = &task_in_intr;
err = ide_diag_taskfile(drive, &args, taskin, inbuf);
break;
case TASKFILE_NO_DATA:
- if (args.tf_out_flags.all != 0) {
- args.handler = &flagged_task_no_data_intr;
- } else {
- args.handler = &task_no_data_intr;
- }
+ args.handler = &task_no_data_intr;
err = ide_diag_taskfile(drive, &args, 0, NULL);
break;
default:
req_task->in_flags = args.tf_in_flags;
req_task->out_flags = args.tf_out_flags;
- if (copy_to_user((void *)arg, req_task, tasksize)) {
+ if (copy_to_user(buf, req_task, tasksize)) {
err = -EFAULT;
goto abort;
}
if (taskout) {
int outtotal = tasksize;
- if (copy_to_user((void *)arg+outtotal, outbuf, taskout)) {
+ if (copy_to_user(buf + outtotal, outbuf, taskout)) {
err = -EFAULT;
goto abort;
}
}
if (taskin) {
int intotal = tasksize + taskout;
- if (copy_to_user((void *)arg+intotal, inbuf, taskin)) {
+ if (copy_to_user(buf + intotal, inbuf, taskin)) {
err = -EFAULT;
goto abort;
}
return ide_do_drive_cmd(drive, &rq, ide_wait);
}
- if (copy_from_user(args, (void *)arg, 4))
+ if (copy_from_user(args, (void __user *)arg, 4))
return -EFAULT;
memset(&tfargs, 0, sizeof(ide_task_t));
ide_driveid_update(drive);
}
abort:
- if (copy_to_user((void *)arg, argbuf, argsize))
+ if (copy_to_user((void __user *)arg, argbuf, argsize))
err = -EFAULT;
if (argsize > 4)
kfree(argbuf);
*/
int ide_task_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
{
+ void __user *p = (void __user *)arg;
int err = 0;
u8 args[7], *argbuf = args;
int argsize = 7;
- if (copy_from_user(args, (void *)arg, 7))
+ if (copy_from_user(args, p, 7))
return -EFAULT;
err = ide_wait_cmd_task(drive, argbuf);
- if (copy_to_user((void *)arg, argbuf, argsize))
+ if (copy_to_user(p, argbuf, argsize))
err = -EFAULT;
return err;
}
void debug_taskfile(drive, task);
#endif /* CONFIG_IDE_TASK_IOCTL_DEBUG */
+ if (task->data_phase == TASKFILE_MULTI_IN ||
+ task->data_phase == TASKFILE_MULTI_OUT) {
+ if (!drive->mult_count) {
+ printk(KERN_ERR "%s: multimode not set!\n", drive->name);
+ return ide_stopped;
+ }
+ }
+
/*
* (ks) Check taskfile in/out flags.
* If set, then execute as it is defined.
return ide_stopped;
/* Issue the command */
+ if (task->prehandler) {
+ hwif->OUTBSYNC(drive, taskfile->command, IDE_COMMAND_REG);
+ ndelay(400); /* FIXME */
+ return task->prehandler(drive, task->rq);
+ }
ide_execute_command(drive, taskfile->command, task->handler, WAIT_WORSTCASE, NULL);
- if (task->prehandler != NULL)
- return task->prehandler(drive, HWGROUP(drive)->rq);
}
return ide_started;
}
EXPORT_SYMBOL(flagged_taskfile);
-
-ide_startstop_t flagged_task_no_data_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat;
-
- local_irq_enable();
-
- if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), READY_STAT, BAD_STAT)) {
- if (stat & ERR_STAT) {
- return DRIVER(drive)->error(drive, "flagged_task_no_data_intr", stat);
- }
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_no_data_intr (unexpected phase)", stat);
- }
-
- ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG));
-
- return ide_stopped;
-}
-
-/*
- * Handler for command with PIO data-in phase
- */
-ide_startstop_t flagged_task_in_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- 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);
- }
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_in_intr (unexpected data phase)", stat);
- }
-
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
- DTF("Read - rq->current_nr_sectors: %d, status: %02x\n", (int) rq->current_nr_sectors, stat);
-
- taskfile_input_data(drive, pBuf, SECTOR_WORDS);
-
- if (--rq->current_nr_sectors != 0) {
- /*
- * (ks) We don't know which command was executed.
- * So, we wait the 'WORSTCASE' value.
- */
- ide_set_handler(drive, &flagged_task_in_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
- /*
- * (ks) Last sector was transfered, wait until drive is ready.
- * This can take up to 10 usec. We willl wait max 50 us.
- */
- while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
- udelay(10);
- ide_end_drive_cmd (drive, stat, hwif->INB(IDE_ERROR_REG));
-
- return ide_stopped;
-}
-
-ide_startstop_t flagged_task_mulin_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- 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);
-
- if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) {
- if (stat & ERR_STAT) {
- return DRIVER(drive)->error(drive, "flagged_task_mulin_intr", stat);
- }
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_mulin_intr (unexpected data phase)", stat);
- }
-
- nsect = (rq->current_nr_sectors > msect) ? msect : rq->current_nr_sectors;
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
-
- DTF("Multiread: %p, nsect: %d , rq->current_nr_sectors: %ld\n",
- pBuf, nsect, rq->current_nr_sectors);
-
- taskfile_input_data(drive, pBuf, nsect * SECTOR_WORDS);
-
- rq->current_nr_sectors -= nsect;
- if (rq->current_nr_sectors != 0) {
- /*
- * (ks) We don't know which command was executed.
- * So, we wait the 'WORSTCASE' value.
- */
- ide_set_handler(drive, &flagged_task_mulin_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
-
- /*
- * (ks) Last sector was transfered, wait until drive is ready.
- * This can take up to 10 usec. We willl wait max 50 us.
- */
- while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
- udelay(10);
- ide_end_drive_cmd (drive, stat, hwif->INB(IDE_ERROR_REG));
-
- return ide_stopped;
-}
-
-/*
- * Pre handler for command with PIO data-out phase
- */
-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);
- return startstop;
- }
-
- taskfile_output_data(drive, rq->buffer, SECTOR_WORDS);
- --rq->current_nr_sectors;
-
- return ide_started;
-}
-
-ide_startstop_t flagged_task_out_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
-
- if (!OK_STAT(stat, DRIVE_READY, BAD_W_STAT))
- return DRIVER(drive)->error(drive, "flagged_task_out_intr", stat);
-
- if (!rq->current_nr_sectors) {
- ide_end_drive_cmd (drive, stat, hwif->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- if (!OK_STAT(stat, DATA_READY, BAD_W_STAT)) {
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_out_intr (unexpected data phase)", stat);
- }
-
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
- DTF("Write - rq->current_nr_sectors: %d, status: %02x\n",
- (int) rq->current_nr_sectors, stat);
-
- taskfile_output_data(drive, pBuf, SECTOR_WORDS);
- --rq->current_nr_sectors;
-
- /*
- * (ks) We don't know which command was executed.
- * So, we wait the 'WORSTCASE' value.
- */
- ide_set_handler(drive, &flagged_task_out_intr, WAIT_WORSTCASE, NULL);
-
- return ide_started;
-}
-
-ide_startstop_t flagged_pre_task_mulout_intr (ide_drive_t *drive, struct request *rq)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- char *pBuf = NULL;
- 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);
-
- 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);
- return startstop;
- }
-
- nsect = (rq->current_nr_sectors > msect) ? msect : rq->current_nr_sectors;
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
- DTF("Multiwrite: %p, nsect: %d , rq->current_nr_sectors: %ld\n",
- pBuf, nsect, rq->current_nr_sectors);
-
- taskfile_output_data(drive, pBuf, nsect * SECTOR_WORDS);
-
- rq->current_nr_sectors -= nsect;
-
- return ide_started;
-}
-
-ide_startstop_t flagged_task_mulout_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- unsigned int msect, nsect;
-
- msect = drive->mult_count;
- if (msect == 0)
- return DRIVER(drive)->error(drive, "flagged_task_mulout_intr (multimode not set)", stat);
-
- if (!OK_STAT(stat, DRIVE_READY, BAD_W_STAT))
- return DRIVER(drive)->error(drive, "flagged_task_mulout_intr", stat);
-
- if (!rq->current_nr_sectors) {
- ide_end_drive_cmd (drive, stat, hwif->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- if (!OK_STAT(stat, DATA_READY, BAD_W_STAT)) {
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_mulout_intr (unexpected data phase)", stat);
- }
-
- nsect = (rq->current_nr_sectors > msect) ? msect : rq->current_nr_sectors;
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
- DTF("Multiwrite: %p, nsect: %d , rq->current_nr_sectors: %ld\n",
- pBuf, nsect, rq->current_nr_sectors);
-
- taskfile_output_data(drive, pBuf, nsect * SECTOR_WORDS);
- rq->current_nr_sectors -= nsect;
-
- /*
- * (ks) We don't know which command was executed.
- * So, we wait the 'WORSTCASE' value.
- */
- ide_set_handler(drive, &flagged_task_mulout_intr, WAIT_WORSTCASE, NULL);
-
- return ide_started;
-}
git://git.onelab.eu / linux-2.6.git / blobdiff