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>

1 files changed, 3 insertions, 9 deletions

diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index b04db9ff1938..670cb748481f 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -99,18 +99,12 @@ void auide_outsw(unsigned long port, void *addr, u32 count)
 
 #endif
 
-static void auide_tune_drive(ide_drive_t *drive, byte pio)
+static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         int mem_sttime;
         int mem_stcfg;
         u8 speed;
 
-        /* get the best pio mode for the drive */
-        pio = ide_get_best_pio_mode(drive, pio, 4);
-
-        printk(KERN_INFO "%s: setting Au1XXX IDE to PIO mode%d\n",
-               drive->name, pio);
-
         mem_sttime = 0;
         mem_stcfg  = au_readl(MEM_STCFG2);
 
@@ -184,7 +178,7 @@ static int auide_tune_chipset(ide_drive_t *drive, const u8 speed)
         mem_stcfg  = au_readl(MEM_STCFG2);
 
         if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) {
-                auide_tune_drive(drive, speed - XFER_PIO_0);
+                au1xxx_set_pio_mode(drive, speed - XFER_PIO_0);
                 return 0;
         }
 
@@ -712,7 +706,7 @@ static int au_ide_probe(struct device *dev)
         hwif->OUTSW                     = auide_outsw;
 #endif
 
-        hwif->tuneproc                  = &auide_tune_drive;
+        hwif->set_pio_mode              = &au1xxx_set_pio_mode;
         hwif->speedproc                 = &auide_tune_chipset;
 
 #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA