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ide: add ide_set{_max}_pio() (take 4)

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* Add IDE_HFLAG_ABUSE_{PREFETCH,FAST_DEVSEL,DMA_MODES} flags
  and set them in ht6560, cmd640, cmd64x and sc1200 host drivers.

* Add set_pio_mode_abuse() for checking if host driver has a non-standard
  ->tuneproc() implementation and use it in do_special().

* Add ide_set_pio() for setting PIO mode (it uses hwif->pio_mask to find
  the maximum PIO mode supported by the host), also add ide_set_max_pio()
  wrapper for ide_set_pio() to use for auto-tuning.  Convert users of
  ->tuneproc to use ide_set{_max}_pio() where possible.  This leaves only
  do_special(), set_using_pio(), ide_hwif_restore() and ide_set_pio() as
  a direct users of ->tuneproc.

* Remove no longer needed ide_get_best_pio_mode() calls and printk-s
  reporting PIO mode selected from ->tuneproc implementations.

* Rename ->tuneproc hook to ->set_pio_mode and make 'pio' argument const.

* Remove stale comment from ide_config_drive_speed().

v2:
* Fix "ata_" prefix (Noticed by Jeff).

v3:
* Minor cleanups/fixups per Sergei's suggestions.

v4:
* Fix compile problem in drivers/ide/pci/cmd640.c
  (Noticed by Andrew Morton).

* Improve some ->set_pio_mode comments.

Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2007-10-11 23:54:00 +02:00
parent 842c19ad6f
commit 26bcb879c0
45 changed files with 318 additions and 326 deletions
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16
drivers/ide/pci/cs5535.c
View File

@@ -147,16 +147,16 @@ static int cs5535_set_drive(ide_drive_t *drive, u8 speed)
return 0;
}
/****
* cs5535_tuneproc - PIO setup
* @drive: drive to set up
* @pio: mode to use (255 for 'best possible')
/**
* cs5535_set_pio_mode - PIO setup
* @drive: drive
* @pio: PIO mode number
*
* A callback from the upper layers for PIO-only tuning.
*/
static void cs5535_tuneproc(ide_drive_t *drive, u8 pio)
static void cs5535_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
pio = ide_get_best_pio_mode(drive, pio, 4);
ide_config_drive_speed(drive, XFER_PIO_0 + pio);
cs5535_set_speed(drive, XFER_PIO_0 + pio);
}
@@ -169,7 +169,7 @@ static int cs5535_dma_check(ide_drive_t *drive)
return 0;
if (ide_use_fast_pio(drive))
cs5535_tuneproc(drive, 255);
ide_set_max_pio(drive);
return -1;
}
@@ -198,7 +198,7 @@ static void __devinit init_hwif_cs5535(ide_hwif_t *hwif)
hwif->autodma = 0;
hwif->tuneproc = &cs5535_tuneproc;
hwif->set_pio_mode = &cs5535_set_pio_mode;
hwif->speedproc = &cs5535_set_drive;
hwif->ide_dma_check = &cs5535_dma_check;