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Subject[PATCH] 2.5.21 IDE 91
Thu Jun 13 22:59:54 CEST 2002 ide-clean-91

- Realize that the only place where ata_do_taskfile gets used is ide-disk.c
move it and its "friends' over there.

- Unify the do_request method for disk devices. This saves quite a lot of code.

- Make task_muin_intr and task_in_intr use the same busy status checks on
entry.

- Unfold get_command at the single only place where it's used.

- Add missing __ata_end_request on kill_rq path.

- Rename udma_tcq_taskfile() to udma_tcq_init to make the code look like to
normal udma_init. Revert the logics of udma_init and it's
implementations to mirror that of udma_tcq_init().

- Fix a tinny bug in pmac_udma_init() where it was reporting the wrong value up
on failure.

- Revert the logics of udma_start(). It's called from udma_init context.
Realize that it is always returning ide_started. Make it self and the
implementations of it return void.

diff -urN linux-2.5.21/drivers/ide/alim15x3.c linux/drivers/ide/alim15x3.c
--- linux-2.5.21/drivers/ide/alim15x3.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/alim15x3.c 2002-06-14 14:23:39.000000000 +0200
@@ -259,7 +259,7 @@
static int ali15x3_udma_init(struct ata_device *drive, struct request *rq)
{
if ((m5229_revision < 0xC2) && (drive->type != ATA_DISK))
- return 1; /* try PIO instead of DMA */
+ return ide_stopped; /* try PIO instead of DMA */

return udma_pci_init(drive, rq);
}
diff -urN linux-2.5.21/drivers/ide/hpt34x.c linux/drivers/ide/hpt34x.c
--- linux-2.5.21/drivers/ide/hpt34x.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/hpt34x.c 2002-06-14 14:20:16.000000000 +0200
@@ -175,7 +175,7 @@
u8 cmd;

if (!(count = udma_new_table(drive, rq)))
- return 1; /* try PIO instead of DMA */
+ return ide_stopped; /* try PIO instead of DMA */

if (rq_data_dir(rq) == READ)
cmd = 0x09;
@@ -192,7 +192,7 @@
OUT_BYTE((cmd == 0x09) ? WIN_READDMA : WIN_WRITEDMA, IDE_COMMAND_REG);
}

- return 0;
+ return ide_started;
}
#endif

diff -urN linux-2.5.21/drivers/ide/hpt366.c linux/drivers/ide/hpt366.c
--- linux-2.5.21/drivers/ide/hpt366.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/hpt366.c 2002-06-14 15:11:39.000000000 +0200
@@ -858,7 +858,7 @@
udelay(10);
}

-static int hpt370_udma_start(struct ata_device *drive, struct request *__rq)
+static void hpt370_udma_start(struct ata_device *drive, struct request *__rq)
{
struct ata_channel *ch = drive->channel;

@@ -870,8 +870,6 @@
*/

outb(inb(ch->dma_base) | 1, ch->dma_base); /* start DMA */
-
- return 0;
}

static void do_timeout_irq(struct ata_device *drive)
diff -urN linux-2.5.21/drivers/ide/icside.c linux/drivers/ide/icside.c
--- linux-2.5.21/drivers/ide/icside.c 2002-06-14 12:45:00.000000000 +0200
+++ linux/drivers/ide/icside.c 2002-06-14 15:11:08.000000000 +0200
@@ -447,18 +447,13 @@
return get_dma_residue(ch->hw.dma) != 0;
}

-static int icside_dma_start(struct ata_device *drive, struct request *rq)
+static void icside_dma_start(struct ata_device *drive, struct request *rq)
{
struct ata_channel *ch = drive->channel;

- /*
- * We can not enable DMA on both channels.
- */
+ /* We can not enable DMA on both channels simultaneously. */
BUG_ON(dma_channel_active(ch->hw.dma));
-
enable_dma(ch->hw.dma);
-
- return 0;
}

/*
@@ -524,10 +519,10 @@
u8 int cmd;

if (icside_dma_common(drive, rq, DMA_MODE_WRITE))
- return 1;
+ return ide_stopped;

if (drive->type != ATA_DISK)
- return 0;
+ return ide_started;

ata_set_handler(drive, icside_dmaintr, WAIT_CMD, NULL);

@@ -543,7 +538,7 @@

enable_dma(ch->hw.dma);

- return 0;
+ return ide_started;
}

static int icside_irq_status(struct ata_device *drive)
diff -urN linux-2.5.21/drivers/ide/ide.c linux/drivers/ide/ide.c
--- linux-2.5.21/drivers/ide/ide.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/ide.c 2002-06-14 13:18:44.000000000 +0200
@@ -702,7 +702,8 @@
spin_unlock_irq(ch->lock);
ata_ops(drive)->end_request(drive, rq, 0);
spin_lock_irq(ch->lock);
- }
+ } else
+ __ata_end_request(drive, rq, 0, 0);
} else
__ata_end_request(drive, rq, 0, 0);

diff -urN linux-2.5.21/drivers/ide/ide-cd.c linux/drivers/ide/ide-cd.c
--- linux-2.5.21/drivers/ide/ide-cd.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/ide-cd.c 2002-06-14 14:23:18.000000000 +0200
@@ -741,7 +741,7 @@
else {
if (info->dma) {
if (info->cmd == READ || info->cmd == WRITE)
- info->dma = !udma_init(drive, rq);
+ info->dma = udma_init(drive, rq);
else
printk("ide-cd: DMA set, but not allowed\n");
}
diff -urN linux-2.5.21/drivers/ide/ide-disk.c linux/drivers/ide/ide-disk.c
--- linux-2.5.21/drivers/ide/ide-disk.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/ide-disk.c 2002-06-14 14:18:25.000000000 +0200
@@ -102,40 +102,44 @@
spin_lock_irqsave(ch->lock, flags);

if (!ata_status(drive, DATA_READY, BAD_R_STAT)) {
- if (drive->status & (ERR_STAT|DRQ_STAT)) {
+ if (drive->status & (ERR_STAT | DRQ_STAT)) {
spin_unlock_irqrestore(ch->lock, flags);

return ata_error(drive, rq, __FUNCTION__);
}

- if (!(drive->status & BUSY_STAT)) {
-// printk("task_in_intr to Soon wait for next interrupt\n");
- ata_set_handler(drive, task_in_intr, WAIT_CMD, NULL);
- spin_unlock_irqrestore(ch->lock, flags);
+ /* no data yet, so wait for another interrupt */
+ ata_set_handler(drive, task_in_intr, WAIT_CMD, NULL);

- return ide_started;
+ ret = ide_started;
+ } else {
+
+ // printk("Read: %p, rq->current_nr_sectors: %d\n", buf, (int) rq->current_nr_sectors);
+ {
+ unsigned long flags;
+ char *buf;
+
+ buf = ide_map_rq(rq, &flags);
+ ata_read(drive, buf, SECTOR_WORDS);
+ ide_unmap_rq(rq, buf, &flags);
}
- }

-// printk("Read: %p, rq->current_nr_sectors: %d\n", buf, (int) rq->current_nr_sectors);
- {
- unsigned long flags;
- char *buf;
-
- buf = ide_map_rq(rq, &flags);
- ata_read(drive, buf, SECTOR_WORDS);
- ide_unmap_rq(rq, buf, &flags);
- }
+ /* First segment of the request is complete. note that this does not
+ * necessarily mean that the entire request is done!! this is only true
+ * if ata_end_request() returns 0.
+ */
+ rq->errors = 0;
+ --rq->current_nr_sectors;

- /* First segment of the request is complete. note that this does not
- * necessarily mean that the entire request is done!! this is only true
- * if ata_end_request() returns 0.
- */
+ if (rq->current_nr_sectors <= 0) {
+ if (!__ata_end_request(drive, rq, 1, 0)) {
+ // printk("Request Ended stat: %02x\n", drive->status);
+ spin_unlock_irqrestore(ch->lock, flags);
+
+ return ide_stopped;
+ }
+ }

- if (--rq->current_nr_sectors <= 0 && !__ata_end_request(drive, rq, 1, 0)) {
-// printk("Request Ended stat: %02x\n", drive->status);
- ret = ide_stopped;
- } else {
/* still data left to transfer */
ata_set_handler(drive, task_in_intr, WAIT_CMD, NULL);

@@ -197,7 +201,7 @@

spin_lock_irqsave(ch->lock, flags);
if (!ata_status(drive, DATA_READY, BAD_R_STAT)) {
- if (drive->status & (ERR_STAT|DRQ_STAT)) {
+ if (drive->status & (ERR_STAT | DRQ_STAT)) {
spin_unlock_irqrestore(ch->lock, flags);

return ata_error(drive, rq, __FUNCTION__);
@@ -235,16 +239,16 @@

rq->errors = 0;
rq->current_nr_sectors -= nsect;
- msect -= nsect;

/* FIXME: this seems buggy */
- if (!rq->current_nr_sectors) {
+ if (rq->current_nr_sectors <= 0) {
if (!__ata_end_request(drive, rq, 1, 0)) {
spin_unlock_irqrestore(ch->lock, flags);

return ide_stopped;
}
}
+ msect -= nsect;
} while (msect);

/* more data left */
@@ -343,212 +347,138 @@
}

/*
- * Decode with physical ATA command to use and setup associated data.
+ * Channel lock should be held on entry.
*/
-static u8 get_command(struct ata_device *drive, struct ata_taskfile *ar, int cmd)
+static ide_startstop_t __do_request(struct ata_device *drive,
+ struct ata_taskfile *ar, struct request *rq)
{
- int lba48bit = (drive->id->cfs_enable_2 & 0x0400) ? 1 : 0;
-
-#if 1
- lba48bit = drive->addressing;
-#endif
-
- if (lba48bit) {
- if (cmd == READ) {
- ar->command_type = IDE_DRIVE_TASK_IN;
- if (drive->using_tcq) {
- return WIN_READDMA_QUEUED_EXT;
- } else if (drive->using_dma) {
- return WIN_READDMA_EXT;
- } else if (drive->mult_count) {
- ar->handler = task_mulin_intr;
- return WIN_MULTREAD_EXT;
- } else {
- ar->handler = task_in_intr;
- return WIN_READ_EXT;
- }
- } else if (cmd == WRITE) {
- ar->command_type = IDE_DRIVE_TASK_RAW_WRITE;
- if (drive->using_tcq) {
- return WIN_WRITEDMA_QUEUED_EXT;
- } else if (drive->using_dma) {
- return WIN_WRITEDMA_EXT;
- } else if (drive->mult_count) {
- ar->handler = task_mulout_intr;
- return WIN_MULTWRITE_EXT;
- } else {
- ar->handler = task_out_intr;
- return WIN_WRITE_EXT;
- }
- }
- } else {
- if (cmd == READ) {
- ar->command_type = IDE_DRIVE_TASK_IN;
- if (drive->using_tcq) {
- return WIN_READDMA_QUEUED;
- } else if (drive->using_dma) {
- return WIN_READDMA;
- } else if (drive->mult_count) {
- ar->handler = task_in_intr;
- return WIN_MULTREAD;
- } else {
- ar->handler = task_in_intr;
- return WIN_READ;
- }
- } else if (cmd == WRITE) {
- ar->command_type = IDE_DRIVE_TASK_RAW_WRITE;
- if (drive->using_tcq) {
- return WIN_WRITEDMA_QUEUED;
- } else if (drive->using_dma) {
- return WIN_WRITEDMA;
- } else if (drive->mult_count) {
- ar->handler = task_mulout_intr;
- return WIN_MULTWRITE;
- } else {
- ar->handler = task_out_intr;
- return WIN_WRITE;
- }
- }
- }
-
- /* not reached! */
- return WIN_NOP;
-}
-
-static ide_startstop_t chs_do_request(struct ata_device *drive, struct request *rq, sector_t block)
-{
- struct ata_taskfile args;
- int sectors;
-
- unsigned int track = (block / drive->sect);
- unsigned int sect = (block % drive->sect) + 1;
- unsigned int head = (track % drive->head);
- unsigned int cyl = (track / drive->head);
-
- sectors = rq->nr_sectors;
- if (sectors == 256)
- sectors = 0;
-
- memset(&args, 0, sizeof(args));
-
- if (blk_rq_tagged(rq)) {
- args.taskfile.feature = sectors;
- args.taskfile.sector_count = rq->tag << 3;
- } else
- args.taskfile.sector_count = sectors;
-
- args.taskfile.sector_number = sect;
- args.taskfile.low_cylinder = cyl;
- args.taskfile.high_cylinder = (cyl>>8);
-
- args.taskfile.device_head = head;
- args.taskfile.device_head |= drive->select.all;
- args.cmd = get_command(drive, &args, rq_data_dir(rq));
-
-#ifdef DEBUG
- printk("%s: %sing: ", drive->name,
- (rq_data_dir(rq)==READ) ? "read" : "writ");
- if (lba) printk("LBAsect=%lld, ", block);
- else printk("CHS=%d/%d/%d, ", cyl, head, sect);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=%p\n", rq->buffer);
-#endif
-
- rq->special = &args;
-
- return ata_do_taskfile(drive, &args, rq);
-}
-
-static ide_startstop_t lba28_do_request(struct ata_device *drive, struct request *rq, sector_t block)
-{
- struct ata_taskfile args;
- int sectors;
-
- sectors = rq->nr_sectors;
- if (sectors == 256)
- sectors = 0;
-
- memset(&args, 0, sizeof(args));
-
- if (blk_rq_tagged(rq)) {
- args.taskfile.feature = sectors;
- args.taskfile.sector_count = rq->tag << 3;
- } else
- args.taskfile.sector_count = sectors;
-
- args.taskfile.sector_number = block;
- args.taskfile.low_cylinder = (block >>= 8);
-
- args.taskfile.high_cylinder = (block >>= 8);
+ struct hd_driveid *id = drive->id;

- args.taskfile.device_head = ((block >> 8) & 0x0f);
- args.taskfile.device_head |= drive->select.all;
- args.cmd = get_command(drive, &args, rq_data_dir(rq));
+ /* (ks/hs): Moved to start, do not use for multiple out commands.
+ * FIXME: why not?! */
+ if (!(ar->cmd == CFA_WRITE_MULTI_WO_ERASE ||
+ ar->cmd == WIN_MULTWRITE ||
+ ar->cmd == WIN_MULTWRITE_EXT)) {
+ ata_irq_enable(drive, 1);
+ ata_mask(drive);
+ }
+
+ if ((id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400) &&
+ (drive->addressing == 1))
+ ata_out_regfile(drive, &ar->hobfile);
+
+ ata_out_regfile(drive, &ar->taskfile);
+
+ OUT_BYTE((ar->taskfile.device_head & (drive->addressing ? 0xE0 : 0xEF)) | drive->select.all,
+ IDE_SELECT_REG);
+
+ if (ar->XXX_handler) {
+ struct ata_channel *ch = drive->channel;
+
+ ata_set_handler(drive, ar->XXX_handler, WAIT_CMD, NULL);
+ OUT_BYTE(ar->cmd, IDE_COMMAND_REG);
+
+ /* FIXME: Warning check for race between handler and prehandler
+ * for writing first block of data. however since we are well
+ * inside the boundaries of the seek, we should be okay.
+ *
+ * FIXME: Replace the switch by using a proper command_type.
+ */

-#ifdef DEBUG
- printk("%s: %sing: ", drive->name,
- (rq_data_dir(rq)==READ) ? "read" : "writ");
- if (lba) printk("LBAsect=%lld, ", block);
- else printk("CHS=%d/%d/%d, ", cyl, head, sect);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=%p\n", rq->buffer);
-#endif
+ if (ar->cmd == CFA_WRITE_SECT_WO_ERASE ||
+ ar->cmd == WIN_WRITE ||
+ ar->cmd == WIN_WRITE_EXT ||
+ ar->cmd == WIN_WRITE_VERIFY ||
+ ar->cmd == WIN_WRITE_BUFFER ||
+ ar->cmd == WIN_DOWNLOAD_MICROCODE ||
+ ar->cmd == CFA_WRITE_MULTI_WO_ERASE ||
+ ar->cmd == WIN_MULTWRITE ||
+ ar->cmd == WIN_MULTWRITE_EXT) {
+ ide_startstop_t startstop;
+
+ if (ata_status_poll(drive, DATA_READY, drive->bad_wstat,
+ WAIT_DRQ, rq, &startstop)) {
+ printk(KERN_ERR "%s: no DRQ after issuing %s\n",
+ drive->name, drive->mult_count ? "MULTWRITE" : "WRITE");

- rq->special = &args;
+ return startstop;
+ }

- return ata_do_taskfile(drive, &args, rq);
-}
+ /* FIXME: This doesn't make the slightest sense.
+ * (ks/hs): Fixed Multi Write
+ */
+ if (!(ar->cmd == CFA_WRITE_MULTI_WO_ERASE ||
+ ar->cmd == WIN_MULTWRITE ||
+ ar->cmd == WIN_MULTWRITE_EXT)) {
+ unsigned long flags;
+ char *buf = ide_map_rq(rq, &flags);

-/*
- * 268435455 == 137439 MB or 28bit limit
- * 320173056 == 163929 MB or 48bit addressing
- * 1073741822 == 549756 MB or 48bit addressing fake drive
- */
+ /* For Write_sectors we need to stuff the first sector */
+ ata_write(drive, buf, SECTOR_WORDS);

-static ide_startstop_t lba48_do_request(struct ata_device *drive, struct request *rq, sector_t block)
-{
- struct ata_taskfile args;
- int sectors;
+ rq->current_nr_sectors--;
+ ide_unmap_rq(rq, buf, &flags);

- sectors = rq->nr_sectors;
- if (sectors == 65536)
- sectors = 0;
+ return ide_started;
+ } else {
+ int i;
+ int ret;

- memset(&args, 0, sizeof(args));
+ /* Polling wait until the drive is ready.
+ *
+ * Stuff the first sector(s) by calling the
+ * handler driectly therafter.
+ *
+ * FIXME: Replace hard-coded 100, what about
+ * error handling?
+ */
+
+ for (i = 0; i < 100; ++i) {
+ if (drive_is_ready(drive))
+ break;
+ }
+ if (!drive_is_ready(drive)) {
+ printk(KERN_ERR "DISASTER WAITING TO HAPPEN!\n");
+ }
+ /* FIXME: make this unlocking go away*/
+ spin_unlock_irq(ch->lock);
+ ret = ar->XXX_handler(drive, rq);
+ spin_lock_irq(ch->lock);

- if (blk_rq_tagged(rq)) {
- args.taskfile.feature = sectors;
- args.hobfile.feature = sectors >> 8;
- args.taskfile.sector_count = rq->tag << 3;
+ return ret;
+ }
+ }
} else {
- args.taskfile.sector_count = sectors;
- args.hobfile.sector_count = sectors >> 8;
- }
-
- args.taskfile.sector_number = block; /* low lba */
- args.taskfile.low_cylinder = (block >>= 8); /* mid lba */
- args.taskfile.high_cylinder = (block >>= 8); /* hi lba */
- args.taskfile.device_head = drive->select.all;
-
- args.hobfile.sector_number = (block >>= 8); /* low lba */
- args.hobfile.low_cylinder = (block >>= 8); /* mid lba */
- args.hobfile.high_cylinder = (block >>= 8); /* hi lba */
- args.hobfile.device_head = drive->select.all;
+ /*
+ * FIXME: This is a gross hack, need to unify tcq dma proc and
+ * regular dma proc. It should now be easier.
+ *
+ * FIXME: Handle the alternateives by a command type.
+ */

- args.cmd = get_command(drive, &args, rq_data_dir(rq));
+ if (!drive->using_dma)
+ return ide_started;

-#ifdef DEBUG
- printk("%s: %sing: ", drive->name,
- (rq_data_dir(rq)==READ) ? "read" : "writ");
- if (lba) printk("LBAsect=%lld, ", block);
- else printk("CHS=%d/%d/%d, ", cyl, head, sect);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=%p\n",rq->buffer);
+ /* for dma commands we don't set the handler */
+ if (ar->cmd == WIN_WRITEDMA ||
+ ar->cmd == WIN_WRITEDMA_EXT ||
+ ar->cmd == WIN_READDMA ||
+ ar->cmd == WIN_READDMA_EXT)
+ return udma_init(drive, rq);
+#ifdef CONFIG_BLK_DEV_IDE_TCQ
+ else if (ar->cmd == WIN_WRITEDMA_QUEUED ||
+ ar->cmd == WIN_WRITEDMA_QUEUED_EXT ||
+ ar->cmd == WIN_READDMA_QUEUED ||
+ ar->cmd == WIN_READDMA_QUEUED_EXT)
+ return udma_tcq_init(drive, rq);
#endif
+ else {
+ printk(KERN_ERR "%s: unknown command %x\n", __FUNCTION__, ar->cmd);
+ return ide_stopped;
+ }
+ }

- rq->special = &args;
-
- return ata_do_taskfile(drive, &args, rq);
+ return ide_started;
}

/*
@@ -560,10 +490,13 @@
*/
static ide_startstop_t idedisk_do_request(struct ata_device *drive, struct request *rq, sector_t block)
{
+ struct ata_taskfile args;
+ unsigned int sectors;
+
/* This issues a special drive command.
*/
if (rq->flags & REQ_SPECIAL)
- return ata_do_taskfile(drive, rq->special, rq);
+ return __do_request(drive, rq->special, rq);

/* FIXME: this check doesn't make sense */
if (!(rq->flags & REQ_CMD)) {
@@ -597,15 +530,150 @@
}
}

- if ((drive->id->cfs_enable_2 & 0x0400) && (drive->addressing))
- return lba48_do_request(drive, rq, block);
- else if (drive->select.b.lba)
- return lba28_do_request(drive, rq, block);
- else
- return chs_do_request(drive, rq, block);
+ memset(&args, 0, sizeof(args));
+ sectors = rq->nr_sectors;
+ /* Dispatch depending up on the drive access method. */
+ if ((drive->id->cfs_enable_2 & 0x0400) && (drive->addressing)) {
+ /* LBA 48 bit */
+ /*
+ * 268435455 == 137439 MB or 28bit limit
+ * 320173056 == 163929 MB or 48bit addressing
+ * 1073741822 == 549756 MB or 48bit addressing fake drive
+ */
+ if (sectors == 65536)
+ sectors = 0;
+
+ if (blk_rq_tagged(rq)) {
+ args.taskfile.feature = sectors;
+ args.hobfile.feature = sectors >> 8;
+ args.taskfile.sector_count = rq->tag << 3;
+ } else {
+ args.taskfile.sector_count = sectors;
+ args.hobfile.sector_count = sectors >> 8;
+ }
+
+ args.taskfile.sector_number = block; /* low lba */
+ args.taskfile.low_cylinder = (block >>= 8); /* mid lba */
+ args.taskfile.high_cylinder = (block >>= 8); /* hi lba */
+ args.taskfile.device_head = drive->select.all;
+
+ args.hobfile.sector_number = (block >>= 8); /* low lba */
+ args.hobfile.low_cylinder = (block >>= 8); /* mid lba */
+ args.hobfile.high_cylinder = (block >>= 8); /* hi lba */
+ } else if (drive->select.b.lba) {
+ /* LBA 28 bit */
+ if (sectors == 256)
+ sectors = 0;
+
+ if (blk_rq_tagged(rq)) {
+ args.taskfile.feature = sectors;
+ args.taskfile.sector_count = rq->tag << 3;
+ } else
+ args.taskfile.sector_count = sectors;
+
+ args.taskfile.sector_number = block;
+ args.taskfile.low_cylinder = (block >>= 8);
+ args.taskfile.high_cylinder = (block >>= 8);
+ args.taskfile.device_head = ((block >> 8) & 0x0f);
+ } else {
+ /* CHS */
+ unsigned int track = (block / drive->sect);
+ unsigned int sect = (block % drive->sect) + 1;
+ unsigned int head = (track % drive->head);
+ unsigned int cyl = (track / drive->head);
+
+ if (sectors == 256)
+ sectors = 0;
+
+ if (blk_rq_tagged(rq)) {
+ args.taskfile.feature = sectors;
+ args.taskfile.sector_count = rq->tag << 3;
+ } else
+ args.taskfile.sector_count = sectors;
+
+ args.taskfile.sector_number = sect;
+ args.taskfile.low_cylinder = cyl;
+ args.taskfile.high_cylinder = (cyl>>8);
+ args.taskfile.device_head = head;
+ }
+ args.taskfile.device_head |= drive->select.all;
+
+ /*
+ * Decode with physical ATA command to use and setup associated data.
+ */
+
+ if (rq_data_dir(rq) == READ) {
+ args.command_type = IDE_DRIVE_TASK_IN;
+ if (drive->addressing) {
+ if (drive->using_tcq) {
+ args.cmd = WIN_READDMA_QUEUED_EXT;
+ } else if (drive->using_dma) {
+ args.cmd = WIN_READDMA_EXT;
+ } else if (drive->mult_count) {
+ args.XXX_handler = task_mulin_intr;
+ args.cmd = WIN_MULTREAD_EXT;
+ } else {
+ args.XXX_handler = task_in_intr;
+ args.cmd = WIN_READ_EXT;
+ }
+ } else {
+ if (drive->using_tcq) {
+ args.cmd = WIN_READDMA_QUEUED;
+ } else if (drive->using_dma) {
+ args.cmd = WIN_READDMA;
+ } else if (drive->mult_count) {
+ /* FIXME : Shouldn't this be task_mulin_intr?! */
+ args.XXX_handler = task_in_intr;
+ args.cmd = WIN_MULTREAD;
+ } else {
+ args.XXX_handler = task_in_intr;
+ args.cmd = WIN_READ;
+ }
+ }
+ } else {
+ args.command_type = IDE_DRIVE_TASK_RAW_WRITE;
+ if (drive->addressing) {
+ if (drive->using_tcq) {
+ args.cmd = WIN_WRITEDMA_QUEUED_EXT;
+ } else if (drive->using_dma) {
+ args.cmd = WIN_WRITEDMA_EXT;
+ } else if (drive->mult_count) {
+ args.XXX_handler = task_mulout_intr;
+ args.cmd = WIN_MULTWRITE_EXT;
+ } else {
+ args.XXX_handler = task_out_intr;
+ args.cmd = WIN_WRITE_EXT;
+ }
+ } else {
+ if (drive->using_tcq) {
+ args.cmd = WIN_WRITEDMA_QUEUED;
+ } else if (drive->using_dma) {
+ args.cmd = WIN_WRITEDMA;
+ } else if (drive->mult_count) {
+ args.XXX_handler = task_mulout_intr;
+ args.cmd = WIN_MULTWRITE;
+ } else {
+ args.XXX_handler = task_out_intr;
+ args.cmd = WIN_WRITE;
+ }
+ }
+ }
+
+
+#ifdef DEBUG
+ printk("%s: %sing: ", drive->name,
+ (rq_data_dir(rq)==READ) ? "read" : "writ");
+ if (lba) printk("LBAsect=%lld, ", block);
+ else printk("CHS=%d/%d/%d, ", cyl, head, sect);
+ printk("sectors=%ld, ", rq->nr_sectors);
+ printk("buffer=%p\n", rq->buffer);
+#endif
+ rq->special = &args;
+
+ return __do_request(drive, &args, rq);
}

-static int idedisk_open(struct inode *inode, struct file *filp, struct ata_device *drive)
+static int idedisk_open(struct inode *inode, struct file *__fp, struct ata_device *drive)
{
MOD_INC_USE_COUNT;
if (drive->removable && drive->usage == 1) {
diff -urN linux-2.5.21/drivers/ide/ide-floppy.c linux/drivers/ide/ide-floppy.c
--- linux-2.5.21/drivers/ide/ide-floppy.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/ide-floppy.c 2002-06-14 14:21:59.000000000 +0200
@@ -1102,7 +1102,7 @@
udma_enable(drive, 0, 1);

if (test_bit (PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
- dma_ok = !udma_init(drive, rq);
+ dma_ok = udma_init(drive, rq);
#endif

ata_irq_enable(drive, 1);
diff -urN linux-2.5.21/drivers/ide/ide-pmac.c linux/drivers/ide/ide-pmac.c
--- linux-2.5.21/drivers/ide/ide-pmac.c 2002-06-14 12:45:00.000000000 +0200
+++ linux/drivers/ide/ide-pmac.c 2002-06-14 15:03:31.000000000 +0200
@@ -1365,7 +1365,8 @@
*/
ix = pmac_ide_find(drive);
if (ix < 0)
- return 0;
+ return ide_started;
+
dma = pmac_ide[ix].dma_regs;
ata4 = (pmac_ide[ix].kind == controller_kl_ata4 ||
pmac_ide[ix].kind == controller_kl_ata4_80);
@@ -1373,7 +1374,8 @@
out_le32(&dma->control, (RUN << 16) | RUN);
/* Make sure it gets to the controller right now */
(void)in_le32(&dma->control);
- return 0;
+
+ return ide_started;
}

static int pmac_udma_stop(struct ata_device *drive)
@@ -1411,7 +1413,7 @@
*/
ix = pmac_ide_find(drive);
if (ix < 0)
- return 0;
+ return ide_stopped;

if (rq_data_dir(rq) == READ)
reading = 1;
@@ -1423,7 +1425,7 @@
pmac_ide[ix].kind == controller_kl_ata4_80);

if (!pmac_ide_build_dmatable(drive, rq, ix, !reading))
- return 1;
+ return ide_stopped;
/* Apple adds 60ns to wrDataSetup on reads */
if (ata4 && (pmac_ide[ix].timings[unit] & TR_66_UDMA_EN)) {
out_le32((unsigned *)(IDE_DATA_REG + IDE_TIMING_CONFIG + _IO_BASE),
@@ -1433,7 +1435,7 @@
}
drive->waiting_for_dma = 1;
if (drive->type != ATA_DISK)
- return 0;
+ return ide_started;

ata_set_handler(drive, ide_dma_intr, WAIT_CMD, NULL);
if ((rq->flags & REQ_SPECIAL) &&
@@ -1447,7 +1449,9 @@
OUT_BYTE(reading ? WIN_READDMA : WIN_WRITEDMA, IDE_COMMAND_REG);
}

- return udma_start(drive, rq);
+ udma_start(drive, rq);
+
+ return ide_started;
}

/*
diff -urN linux-2.5.21/drivers/ide/ide-tape.c linux/drivers/ide/ide-tape.c
--- linux-2.5.21/drivers/ide/ide-tape.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/ide-tape.c 2002-06-14 14:20:30.000000000 +0200
@@ -2290,7 +2290,7 @@
udma_enable(drive, 0, 1);
}
if (test_bit (PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
- dma_ok = !udma_init(drive, rq);
+ dma_ok = udma_init(drive, rq);
#endif

ata_irq_enable(drive, 1);
diff -urN linux-2.5.21/drivers/ide/ide-taskfile.c linux/drivers/ide/ide-taskfile.c
--- linux-2.5.21/drivers/ide/ide-taskfile.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/ide-taskfile.c 2002-06-14 02:04:27.000000000 +0200
@@ -177,145 +177,6 @@
}

/*
- * Channel lock should be held on entry.
- */
-ide_startstop_t ata_do_taskfile(struct ata_device *drive,
- struct ata_taskfile *ar, struct request *rq)
-{
- struct hd_driveid *id = drive->id;
-
- /* (ks/hs): Moved to start, do not use for multiple out commands.
- * FIXME: why not?! */
- if (!(ar->cmd == CFA_WRITE_MULTI_WO_ERASE ||
- ar->cmd == WIN_MULTWRITE ||
- ar->cmd == WIN_MULTWRITE_EXT)) {
- ata_irq_enable(drive, 1);
- ata_mask(drive);
- }
-
- if ((id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400) &&
- (drive->addressing == 1))
- ata_out_regfile(drive, &ar->hobfile);
-
- ata_out_regfile(drive, &ar->taskfile);
-
- OUT_BYTE((ar->taskfile.device_head & (drive->addressing ? 0xE0 : 0xEF)) | drive->select.all,
- IDE_SELECT_REG);
-
- if (ar->handler) {
- struct ata_channel *ch = drive->channel;
-
- /* This is apparently supposed to reset the wait timeout for
- * the interrupt to accur.
- */
-
- ata_set_handler(drive, ar->handler, WAIT_CMD, NULL);
- OUT_BYTE(ar->cmd, IDE_COMMAND_REG);
-
- /* FIXME: Warning check for race between handler and prehandler
- * for writing first block of data. however since we are well
- * inside the boundaries of the seek, we should be okay.
- *
- * FIXME: Replace the switch by using a proper command_type.
- */
-
- if (ar->cmd == CFA_WRITE_SECT_WO_ERASE ||
- ar->cmd == WIN_WRITE ||
- ar->cmd == WIN_WRITE_EXT ||
- ar->cmd == WIN_WRITE_VERIFY ||
- ar->cmd == WIN_WRITE_BUFFER ||
- ar->cmd == WIN_DOWNLOAD_MICROCODE ||
- ar->cmd == CFA_WRITE_MULTI_WO_ERASE ||
- ar->cmd == WIN_MULTWRITE ||
- ar->cmd == WIN_MULTWRITE_EXT) {
- ide_startstop_t startstop;
-
- if (ata_status_poll(drive, DATA_READY, drive->bad_wstat,
- WAIT_DRQ, rq, &startstop)) {
- printk(KERN_ERR "%s: no DRQ after issuing %s\n",
- drive->name, drive->mult_count ? "MULTWRITE" : "WRITE");
-
- return startstop;
- }
-
- /* FIXME: This doesn't make the slightest sense.
- * (ks/hs): Fixed Multi Write
- */
- if (!(ar->cmd == CFA_WRITE_MULTI_WO_ERASE ||
- ar->cmd == WIN_MULTWRITE ||
- ar->cmd == WIN_MULTWRITE_EXT)) {
- unsigned long flags;
- char *buf = ide_map_rq(rq, &flags);
-
- /* For Write_sectors we need to stuff the first sector */
- ata_write(drive, buf, SECTOR_WORDS);
-
- rq->current_nr_sectors--;
- ide_unmap_rq(rq, buf, &flags);
-
- return ide_started;
- } else {
- int i;
- int ret;
-
- /* Polling wait until the drive is ready.
- *
- * Stuff the first sector(s) by calling the
- * handler driectly therafter.
- *
- * FIXME: Replace hard-coded 100, what about
- * error handling?
- */
-
- for (i = 0; i < 100; ++i) {
- if (drive_is_ready(drive))
- break;
- }
- if (!drive_is_ready(drive)) {
- printk(KERN_ERR "DISASTER WAITING TO HAPPEN!\n");
- }
- /* FIXME: make this unlocking go away*/
- spin_unlock_irq(ch->lock);
- ret = ar->handler(drive, rq);
- spin_lock_irq(ch->lock);
-
- return ret;
- }
- }
- } else {
- /*
- * FIXME: This is a gross hack, need to unify tcq dma proc and
- * regular dma proc. It should now be easier.
- *
- * FIXME: Handle the alternateives by a command type.
- */
-
- if (!drive->using_dma)
- return ide_started;
-
- /* for dma commands we don't set the handler */
- if (ar->cmd == WIN_WRITEDMA ||
- ar->cmd == WIN_WRITEDMA_EXT ||
- ar->cmd == WIN_READDMA ||
- ar->cmd == WIN_READDMA_EXT)
- return !udma_init(drive, rq);
-#ifdef CONFIG_BLK_DEV_IDE_TCQ
- else if (ar->cmd == WIN_WRITEDMA_QUEUED ||
- ar->cmd == WIN_WRITEDMA_QUEUED_EXT ||
- ar->cmd == WIN_READDMA_QUEUED ||
- ar->cmd == WIN_READDMA_QUEUED_EXT)
- return udma_tcq_taskfile(drive, rq);
-#endif
- else {
- printk(KERN_ERR "%s: unknown command %x\n", __FUNCTION__, ar->cmd);
- return ide_stopped;
- }
- }
-
- return ide_started;
-}
-
-/*
* This function issues a special IDE device request onto the request queue.
*
* If action is ide_wait, then the rq is queued at the end of the request
@@ -436,7 +297,7 @@
struct request req;

ar->command_type = IDE_DRIVE_TASK_NO_DATA;
- ar->handler = ata_special_intr;
+ ar->XXX_handler = ata_special_intr;

memset(&req, 0, sizeof(req));
req.flags = REQ_SPECIAL;
@@ -449,6 +310,5 @@
EXPORT_SYMBOL(ide_do_drive_cmd);
EXPORT_SYMBOL(ata_read);
EXPORT_SYMBOL(ata_write);
-EXPORT_SYMBOL(ata_do_taskfile);
EXPORT_SYMBOL(ata_special_intr);
EXPORT_SYMBOL(ide_raw_taskfile);
diff -urN linux-2.5.21/drivers/ide/ioctl.c linux/drivers/ide/ioctl.c
--- linux-2.5.21/drivers/ide/ioctl.c 2002-06-14 12:45:00.000000000 +0200
+++ linux/drivers/ide/ioctl.c 2002-06-14 02:08:02.000000000 +0200
@@ -54,9 +54,6 @@
if (copy_from_user(vals, (void *)arg, 4))
return -EFAULT;

- memset(&req, 0, sizeof(req));
- req.flags = REQ_SPECIAL;
-
memset(&args, 0, sizeof(args));

args.taskfile.feature = vals[2];
@@ -83,10 +80,14 @@

/* Issue ATA command and wait for completion.
*/
- args.handler = ata_special_intr;
+ args.command_type = IDE_DRIVE_TASK_NO_DATA;
+ args.XXX_handler = ata_special_intr;

- req.buffer = argbuf + 4;
+ memset(&req, 0, sizeof(req));
+ req.flags = REQ_SPECIAL;
req.special = &args;
+
+ req.buffer = argbuf + 4;
err = ide_do_drive_cmd(drive, &req, ide_wait);

argbuf[0] = drive->status;
diff -urN linux-2.5.21/drivers/ide/ns87415.c linux/drivers/ide/ns87415.c
--- linux-2.5.21/drivers/ide/ns87415.c 2002-06-09 07:28:49.000000000 +0200
+++ linux/drivers/ide/ns87415.c 2002-06-14 14:27:42.000000000 +0200
@@ -105,12 +105,12 @@
{
ns87415_prepare_drive(drive, 1); /* select DMA xfer */

- if (!udma_pci_init(drive, rq)) /* use standard DMA stuff */
- return 0;
+ if (udma_pci_init(drive, rq)) /* use standard DMA stuff */
+ return ide_started;

ns87415_prepare_drive(drive, 0); /* DMA failed: select PIO xfer */

- return 1;
+ return ide_stopped;
}

static int ns87415_udma_setup(struct ata_device *drive)
diff -urN linux-2.5.21/drivers/ide/pcidma.c linux/drivers/ide/pcidma.c
--- linux-2.5.21/drivers/ide/pcidma.c 2002-06-14 12:45:03.000000000 +0200
+++ linux/drivers/ide/pcidma.c 2002-06-14 15:12:30.000000000 +0200
@@ -420,13 +420,11 @@
struct ata_channel *ch = drive->channel;
unsigned long dma_base = ch->dma_base;

- /* Note that this is done *after* the cmd has
- * been issued to the drive, as per the BM-IDE spec.
- * The Promise Ultra33 doesn't work correctly when
- * we do this part before issuing the drive cmd.
+ /* Note that this is done *after* the cmd has been issued to the drive,
+ * as per the BM-IDE spec. The Promise Ultra33 doesn't work correctly
+ * when we do this part before issuing the drive cmd.
*/
- outb(inb(dma_base)|1, dma_base); /* start DMA */
- return 0;
+ outb(inb(dma_base) | 1, dma_base); /* start DMA */
}

/*
@@ -545,11 +543,11 @@
u8 cmd;

if (ata_start_dma(drive, rq))
- return 1;
+ return ide_stopped;

/* No DMA transfers on ATAPI devices. */
if (drive->type != ATA_DISK)
- return 0;
+ return ide_started;

if (rq_data_dir(rq) == READ)
cmd = 0x08;
@@ -562,7 +560,9 @@
else
outb(cmd ? WIN_READDMA : WIN_WRITEDMA, IDE_COMMAND_REG);

- return udma_start(drive, rq);
+ udma_start(drive, rq);
+
+ return ide_started;
}

EXPORT_SYMBOL(ide_dma_intr);
diff -urN linux-2.5.21/drivers/ide/pdc202xx.c linux/drivers/ide/pdc202xx.c
--- linux-2.5.21/drivers/ide/pdc202xx.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/pdc202xx.c 2002-06-14 15:13:37.000000000 +0200
@@ -573,8 +573,6 @@
*/

outb(inb(ch->dma_base) | 1, ch->dma_base); /* start DMA */
-
- return 0;
}

int pdc202xx_udma_stop(struct ata_device *drive)
diff -urN linux-2.5.21/drivers/ide/pdc4030.c linux/drivers/ide/pdc4030.c
--- linux-2.5.21/drivers/ide/pdc4030.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/ide/pdc4030.c 2002-06-14 02:09:46.000000000 +0200
@@ -784,7 +784,7 @@
args.taskfile.high_cylinder = (block>>=8);
args.taskfile.device_head = ((block>>8)&0x0f)|drive->select.all;
args.cmd = (rq_data_dir(rq) == READ) ? PROMISE_READ : PROMISE_WRITE;
- args.handler = NULL;
+ args.XXX_handler = NULL;
rq->special = &args;

return do_pdc4030_io(drive, &args, rq);
diff -urN linux-2.5.21/drivers/ide/sl82c105.c linux/drivers/ide/sl82c105.c
--- linux-2.5.21/drivers/ide/sl82c105.c 2002-06-09 07:28:39.000000000 +0200
+++ linux/drivers/ide/sl82c105.c 2002-06-14 14:22:23.000000000 +0200
@@ -209,6 +209,7 @@
static int sl82c105_dma_init(struct ata_device *drive, struct request *rq)
{
sl82c105_reset_host(drive->channel->pci_dev);
+
return udma_pci_init(drive, rq);
}

diff -urN linux-2.5.21/drivers/ide/tcq.c linux/drivers/ide/tcq.c
--- linux-2.5.21/drivers/ide/tcq.c 2002-06-14 12:45:03.000000000 +0200
+++ linux/drivers/ide/tcq.c 2002-06-14 15:04:59.000000000 +0200
@@ -84,7 +84,7 @@
{
struct ata_channel *ch = drive->channel;
request_queue_t *q = &drive->queue;
- struct ata_taskfile *args;
+ struct ata_taskfile *ar;
struct request *rq;
unsigned long flags;

@@ -110,8 +110,8 @@
* executed before any new commands are started. issue a NOP
* to clear internal queue on drive.
*/
- args = kmalloc(sizeof(*args), GFP_ATOMIC);
- if (!args) {
+ ar = kmalloc(sizeof(*ar), GFP_ATOMIC);
+ if (!ar) {
printk(KERN_ERR "ATA: %s: failed to issue NOP\n", drive->name);
goto out;
}
@@ -126,10 +126,10 @@
*/
BUG_ON(!rq);

- rq->special = args;
- args->cmd = WIN_NOP;
- args->handler = tcq_nop_handler;
- args->command_type = IDE_DRIVE_TASK_NO_DATA;
+ rq->special = ar;
+ ar->cmd = WIN_NOP;
+ ar->XXX_handler = tcq_nop_handler;
+ ar->command_type = IDE_DRIVE_TASK_NO_DATA;

rq->rq_dev = mk_kdev(drive->channel->major, (drive->select.b.unit)<<PARTN_BITS);
_elv_add_request(q, rq, 0, 0);
@@ -539,10 +539,9 @@
return ide_stopped;

set_irq(drive, ide_dmaq_intr);
- if (!udma_start(drive, rq))
- return ide_started;
+ udma_start(drive, rq);

- return ide_stopped;
+ return ide_started;
}

/*
@@ -550,7 +549,7 @@
*
* Channel lock should be held.
*/
-ide_startstop_t udma_tcq_taskfile(struct ata_device *drive, struct request *rq)
+ide_startstop_t udma_tcq_init(struct ata_device *drive, struct request *rq)
{
u8 stat;
u8 feat;
diff -urN linux-2.5.21/drivers/ide/trm290.c linux/drivers/ide/trm290.c
--- linux-2.5.21/drivers/ide/trm290.c 2002-06-14 12:45:00.000000000 +0200
+++ linux/drivers/ide/trm290.c 2002-06-14 15:12:48.000000000 +0200
@@ -179,7 +179,6 @@
static int trm290_udma_start(struct ata_device *drive, struct request *__rq)
{
/* Nothing to be done here. */
- return 0;
}

static int trm290_udma_stop(struct ata_device *drive)
@@ -210,7 +209,7 @@
#ifdef TRM290_NO_DMA_WRITES
trm290_prepare_drive(drive, 0); /* select PIO xfer */

- return 1;
+ return ide_stopped;
#endif
} else {
reading = 2;
@@ -219,7 +218,7 @@

if (!(count = udma_new_table(drive, rq))) {
trm290_prepare_drive(drive, 0); /* select PIO xfer */
- return 1; /* try PIO instead of DMA */
+ return ide_stopped; /* try PIO instead of DMA */
}

trm290_prepare_drive(drive, 1); /* select DMA xfer */
@@ -233,7 +232,7 @@
outb(reading ? WIN_READDMA : WIN_WRITEDMA, IDE_COMMAND_REG);
}

- return 0;
+ return ide_started;
}

static int trm290_udma_irq_status(struct ata_device *drive)
diff -urN linux-2.5.21/drivers/scsi/ide-scsi.c linux/drivers/scsi/ide-scsi.c
--- linux-2.5.21/drivers/scsi/ide-scsi.c 2002-06-14 12:45:13.000000000 +0200
+++ linux/drivers/scsi/ide-scsi.c 2002-06-14 14:18:13.000000000 +0200
@@ -444,7 +444,7 @@
bcount = min(pc->request_transfer, 63 * 1024); /* Request to transfer the entire buffer at once */

if (drive->using_dma && rq->bio)
- dma_ok = !udma_init(drive, rq);
+ dma_ok = udma_init(drive, rq);

ata_select(drive, 10);
ata_irq_enable(drive, 1);
diff -urN linux-2.5.21/include/linux/ide.h linux/include/linux/ide.h
--- linux-2.5.21/include/linux/ide.h 2002-06-14 12:45:13.000000000 +0200
+++ linux/include/linux/ide.h 2002-06-14 15:14:20.000000000 +0200
@@ -459,9 +459,9 @@
int (*udma_setup)(struct ata_device *);

void (*udma_enable)(struct ata_device *, int, int);
- int (*udma_start) (struct ata_device *, struct request *rq);
+ void (*udma_start) (struct ata_device *, struct request *);
int (*udma_stop) (struct ata_device *);
- int (*udma_init) (struct ata_device *, struct request *rq);
+ int (*udma_init) (struct ata_device *, struct request *);
int (*udma_irq_status) (struct ata_device *);
void (*udma_timeout) (struct ata_device *);
void (*udma_irq_lost) (struct ata_device *);
@@ -651,15 +651,12 @@
struct hd_drive_task_hdr hobfile;
u8 cmd; /* actual ATA command */
int command_type;
- ide_startstop_t (*handler)(struct ata_device *, struct request *);
+ ide_startstop_t (*XXX_handler)(struct ata_device *, struct request *);
};

extern void ata_read(struct ata_device *, void *, unsigned int);
extern void ata_write(struct ata_device *, void *, unsigned int);

-extern ide_startstop_t ata_do_taskfile(struct ata_device *,
- struct ata_taskfile *, struct request *);
-
/*
* Special Flagged Register Validation Caller
*/
@@ -751,9 +748,9 @@
drive->channel->udma_enable(drive, on, verbose);
}

-static inline int udma_start(struct ata_device *drive, struct request *rq)
+static inline void udma_start(struct ata_device *drive, struct request *rq)
{
- return drive->channel->udma_start(drive, rq);
+ drive->channel->udma_start(drive, rq);
}

static inline int udma_stop(struct ata_device *drive)
@@ -764,7 +761,7 @@
/*
* Initiate actual DMA data transfer. The direction is encoded in the request.
*/
-static inline int udma_init(struct ata_device *drive, struct request *rq)
+static inline ide_startstop_t udma_init(struct ata_device *drive, struct request *rq)
{
return drive->channel->udma_init(drive, rq);
}
@@ -802,7 +799,7 @@
extern int udma_black_list(struct ata_device *);
extern int udma_white_list(struct ata_device *);

-extern ide_startstop_t udma_tcq_taskfile(struct ata_device *, struct request *);
+extern ide_startstop_t udma_tcq_init(struct ata_device *, struct request *);
extern int udma_tcq_enable(struct ata_device *, int);

extern ide_startstop_t ide_dma_intr(struct ata_device *, struct request *);
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