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ide: convert 'pio_mode' device setting to use DS_SYNC flag

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* Convert 'pio_mode' device setting to use DS_SYNC flag.

* Remove unused special_t.b.{set_tune,serviced} and ide_drive_t.tune_req.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2008-10-13 21:39:40 +02:00
parent 7f612f272a
commit 6982daf71c
3 changed files with 48 additions and 79 deletions
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52
drivers/ide/ide.c
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@@ -314,9 +314,32 @@ out:
#endif
}
/*
* handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
*/
static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
{
switch (req_pio) {
case 202:
case 201:
case 200:
case 102:
case 101:
case 100:
return (hwif->host_flags & IDE_HFLAG_ABUSE_DMA_MODES) ? 1 : 0;
case 9:
case 8:
return (hwif->host_flags & IDE_HFLAG_ABUSE_PREFETCH) ? 1 : 0;
case 7:
case 6:
return (hwif->host_flags & IDE_HFLAG_ABUSE_FAST_DEVSEL) ? 1 : 0;
default:
return 0;
}
}
static int set_pio_mode(ide_drive_t *drive, int arg)
{
struct request *rq;
ide_hwif_t *hwif = drive->hwif;
const struct ide_port_ops *port_ops = hwif->port_ops;
@@ -327,17 +350,26 @@ static int set_pio_mode(ide_drive_t *drive, int arg)
(hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
return -ENOSYS;
if (drive->special.b.set_tune)
return -EBUSY;
if (set_pio_mode_abuse(drive->hwif, arg)) {
if (arg == 8 || arg == 9) {
unsigned long flags;
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
/* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */
spin_lock_irqsave(&ide_lock, flags);
port_ops->set_pio_mode(drive, arg);
spin_unlock_irqrestore(&ide_lock, flags);
} else
port_ops->set_pio_mode(drive, arg);
} else {
int keep_dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
drive->tune_req = (u8) arg;
drive->special.b.set_tune = 1;
ide_set_pio(drive, arg);
blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
if (hwif->host_flags & IDE_HFLAG_SET_PIO_MODE_KEEP_DMA) {
if (keep_dma)
ide_dma_on(drive);
}
}
return 0;
}
@@ -367,7 +399,7 @@ ide_gen_devset_rw(io_32bit, io_32bit);
ide_gen_devset_rw(keepsettings, ksettings);
ide_gen_devset_rw(unmaskirq, unmaskirq);
ide_gen_devset_rw(using_dma, using_dma);
__IDE_DEVSET(pio_mode, 0, NULL, set_pio_mode);
__IDE_DEVSET(pio_mode, DS_SYNC, NULL, set_pio_mode);
static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
{