ide: add ide_set{_max}_pio() (take 4)
* 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>
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index b66f9d1..07492d7 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -17,11 +17,11 @@
* 41
* 43
*
- * | PIO 0 | c0 | 80 | 0 | piix_tune_drive(drive, 0);
- * | PIO 2 | SW2 | d0 | 90 | 4 | piix_tune_drive(drive, 2);
- * | PIO 3 | MW1 | e1 | a1 | 9 | piix_tune_drive(drive, 3);
- * | PIO 4 | MW2 | e3 | a3 | b | piix_tune_drive(drive, 4);
- *
+ * | PIO 0 | c0 | 80 | 0 |
+ * | PIO 2 | SW2 | d0 | 90 | 4 |
+ * | PIO 3 | MW1 | e1 | a1 | 9 |
+ * | PIO 4 | MW2 | e3 | a3 | b |
+ *
* sitre = word40 & 0x4000; primary
* sitre = word42 & 0x4000; secondary
*
@@ -204,16 +204,16 @@
}
/**
- * piix_tune_drive - tune a drive attached to PIIX
+ * piix_set_pio_mode - set PIO mode
* @drive: drive to tune
* @pio: desired PIO mode
*
* Set the drive's PIO mode (might be useful if drive is not registered
* in CMOS for any reason).
*/
-static void piix_tune_drive (ide_drive_t *drive, u8 pio)
+
+static void piix_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
- pio = ide_get_best_pio_mode(drive, pio, 4);
piix_tune_pio(drive, pio);
(void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
}
@@ -317,7 +317,7 @@
return 0;
if (ide_use_fast_pio(drive))
- piix_tune_drive(drive, 255);
+ ide_set_max_pio(drive);
return -1;
}
@@ -454,7 +454,8 @@
}
hwif->autodma = 0;
- hwif->tuneproc = &piix_tune_drive;
+
+ hwif->set_pio_mode = &piix_set_pio_mode;
hwif->speedproc = &piix_tune_chipset;
hwif->drives[0].autotune = 1;
hwif->drives[1].autotune = 1;