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path: root/drivers/ide/pci/piix.c
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Diffstat (limited to 'drivers/ide/pci/piix.c')
-rw-r--r--drivers/ide/pci/piix.c40
1 files changed, 16 insertions, 24 deletions
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 5cfa9378bbb8..fd8214a7ab98 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/piix.c Version 0.51 Jul 6, 2007
+ * linux/drivers/ide/pci/piix.c Version 0.52 Jul 14, 2007
*
* Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
* Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
@@ -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 @@ static void piix_tune_pio (ide_drive_t *drive, u8 pio)
}
/**
- * 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);
}
@@ -221,19 +221,18 @@ static void piix_tune_drive (ide_drive_t *drive, u8 pio)
/**
* piix_tune_chipset - tune a PIIX interface
* @drive: IDE drive to tune
- * @xferspeed: speed to configure
+ * @speed: speed to configure
*
* Set a PIIX interface channel to the desired speeds. This involves
* requires the right timing data into the PIIX configuration space
* then setting the drive parameters appropriately
*/
-
-static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+
+static int piix_tune_chipset(ide_drive_t *drive, const u8 speed)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
u8 maslave = hwif->channel ? 0x42 : 0x40;
- u8 speed = ide_rate_filter(drive, xferspeed);
int a_speed = 3 << (drive->dn * 4);
int u_flag = 1 << drive->dn;
int v_flag = 0x01 << drive->dn;
@@ -260,11 +259,6 @@ static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
case XFER_MW_DMA_2:
case XFER_MW_DMA_1:
case XFER_SW_DMA_2: break;
- case XFER_PIO_4:
- case XFER_PIO_3:
- case XFER_PIO_2:
- case XFER_PIO_1:
- case XFER_PIO_0: break;
default: return -1;
}
@@ -294,10 +288,7 @@ static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
}
- if (speed > XFER_PIO_4)
- piix_tune_pio(drive, piix_dma_2_pio(speed));
- else
- piix_tune_pio(drive, speed - XFER_PIO_0);
+ piix_tune_pio(drive, piix_dma_2_pio(speed));
return ide_config_drive_speed(drive, speed);
}
@@ -318,7 +309,7 @@ static int piix_config_drive_xfer_rate (ide_drive_t *drive)
return 0;
if (ide_use_fast_pio(drive))
- piix_tune_drive(drive, 255);
+ ide_set_max_pio(drive);
return -1;
}
@@ -455,7 +446,8 @@ static void __devinit init_hwif_piix(ide_hwif_t *hwif)
}
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;