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ide: switch ide_cmd_ioctl() to use REQ_TYPE_ATA_TASKFILE requests

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Based on the earlier work by Tejun Heo.

There should be no functionality changes caused by this patch.

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-01-26 20:13:13 +01:00
parent 34f5d5ae35
commit 5a9e77af97
2 changed files with 33 additions and 34 deletions
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4
drivers/ide/ide-iops.c
View file

@ -619,7 +619,7 @@ u8 eighty_ninty_three (ide_drive_t *drive)
int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
{
if (args->tf.command == WIN_SETFEATURES &&
args->tf.lbal > XFER_UDMA_2 &&
args->tf.nsect > XFER_UDMA_2 &&
args->tf.feature == SETFEATURES_XFER) {
if (eighty_ninty_three(drive) == 0) {
printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
@ -639,7 +639,7 @@ int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
int set_transfer (ide_drive_t *drive, ide_task_t *args)
{
if (args->tf.command == WIN_SETFEATURES &&
args->tf.lbal >= XFER_SW_DMA_0 &&
args->tf.nsect >= XFER_SW_DMA_0 &&
args->tf.feature == SETFEATURES_XFER &&
(drive->id->dma_ultra ||
drive->id->dma_mword ||

63
drivers/ide/ide-taskfile.c
View file

@ -750,31 +750,11 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
}
#endif
static int ide_wait_cmd(ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature,
u8 sectors, u8 *buf)
{
struct request rq;
u8 buffer[4];
if (!buf)
buf = buffer;
memset(buf, 0, 4 + SECTOR_WORDS * 4 * sectors);
ide_init_drive_cmd(&rq);
rq.cmd_type = REQ_TYPE_ATA_CMD;
rq.buffer = buf;
*buf++ = cmd;
*buf++ = nsect;
*buf++ = feature;
*buf++ = sectors;
return ide_do_drive_cmd(drive, &rq, ide_wait);
}
int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
{
int err = 0;
u8 args[4], *argbuf = args;
u8 xfer_rate = 0;
int argsize = 4;
u8 *buf = NULL;
int bufsize = 0, err = 0;
u8 args[4], xfer_rate = 0;
ide_task_t tfargs;
struct ide_taskfile *tf = &tfargs.tf;
@ -792,23 +772,39 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
memset(&tfargs, 0, sizeof(ide_task_t));
tf->feature = args[2];
tf->nsect = args[3];
tf->lbal = args[1];
if (args[0] == WIN_SMART) {
tf->nsect = args[3];
tf->lbal = args[1];
tf->lbam = 0x4f;
tf->lbah = 0xc2;
tfargs.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_IN_NSECT;
} else {
tf->nsect = args[1];
tfargs.tf_flags = IDE_TFLAG_OUT_FEATURE |
IDE_TFLAG_OUT_NSECT | IDE_TFLAG_IN_NSECT;
}
tf->command = args[0];
tfargs.data_phase = args[3] ? TASKFILE_IN : TASKFILE_NO_DATA;
if (args[3]) {
argsize = 4 + (SECTOR_WORDS * 4 * args[3]);
argbuf = kzalloc(argsize, GFP_KERNEL);
if (argbuf == NULL)
tfargs.tf_flags |= IDE_TFLAG_IO_16BIT;
bufsize = SECTOR_WORDS * 4 * args[3];
buf = kzalloc(bufsize, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
}
if (set_transfer(drive, &tfargs)) {
xfer_rate = args[1];
if (ide_ata66_check(drive, &tfargs))
goto abort;
}
err = ide_wait_cmd(drive, args[0], args[1], args[2], args[3], argbuf);
err = ide_raw_taskfile(drive, &tfargs, buf, args[3]);
args[0] = tf->status;
args[1] = tf->error;
args[2] = tf->nsect;
if (!err && xfer_rate) {
/* active-retuning-calls future */
@ -816,10 +812,13 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
ide_driveid_update(drive);
}
abort:
if (copy_to_user((void __user *)arg, argbuf, argsize))
if (copy_to_user((void __user *)arg, &args, 4))
err = -EFAULT;
if (argsize > 4)
kfree(argbuf);
if (buf) {
if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
err = -EFAULT;
kfree(buf);
}
return err;
}