/*
- * linux/drivers/ide/pci/atiixp.c Version 0.01-bart2 Feb. 26, 2004
+ * linux/drivers/ide/pci/atiixp.c Version 0.02 Jun 16 2007
*
* Copyright (C) 2003 ATI Inc. <hyu@ati.com>
- * Copyright (C) 2004 Bartlomiej Zolnierkiewicz
- *
+ * Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
*/
#include <linux/types.h>
static DEFINE_SPINLOCK(atiixp_lock);
-/**
- * atiixp_ratemask - compute rate mask for ATIIXP IDE
- * @drive: IDE drive to compute for
- *
- * Returns the available modes for the ATIIXP IDE controller.
- */
-
-static u8 atiixp_ratemask(ide_drive_t *drive)
-{
- u8 mode = 3;
-
- if (!eighty_ninty_three(drive))
- mode = min(mode, (u8)1);
- return mode;
-}
-
/**
* atiixp_dma_2_pio - return the PIO mode matching DMA
* @xfer_rate: transfer speed
}
}
-static int atiixp_ide_dma_host_on(ide_drive_t *drive)
+static void atiixp_dma_host_on(ide_drive_t *drive)
{
struct pci_dev *dev = drive->hwif->pci_dev;
unsigned long flags;
spin_unlock_irqrestore(&atiixp_lock, flags);
- return __ide_dma_host_on(drive);
+ ide_dma_host_on(drive);
}
-static int atiixp_ide_dma_host_off(ide_drive_t *drive)
+static void atiixp_dma_host_off(ide_drive_t *drive)
{
struct pci_dev *dev = drive->hwif->pci_dev;
unsigned long flags;
spin_unlock_irqrestore(&atiixp_lock, flags);
- return __ide_dma_host_off(drive);
+ ide_dma_host_off(drive);
}
/**
- * atiixp_tune_drive - tune a drive attached to a ATIIXP
+ * atiixp_tune_pio - tune a drive attached to a ATIIXP
* @drive: drive to tune
* @pio: desired PIO mode
*
* Set the interface PIO mode.
*/
-static void atiixp_tuneproc(ide_drive_t *drive, u8 pio)
+static void atiixp_tune_pio(ide_drive_t *drive, u8 pio)
{
struct pci_dev *dev = drive->hwif->pci_dev;
unsigned long flags;
spin_unlock_irqrestore(&atiixp_lock, flags);
}
+static void atiixp_tuneproc(ide_drive_t *drive, u8 pio)
+{
+ pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
+ atiixp_tune_pio(drive, pio);
+ (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio);
+}
+
/**
* atiixp_tune_chipset - tune a ATIIXP interface
* @drive: IDE drive to tune
u16 tmp16;
u8 speed, pio;
- speed = ide_rate_filter(atiixp_ratemask(drive), xferspeed);
+ speed = ide_rate_filter(drive, xferspeed);
+
+ if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) {
+ atiixp_tune_pio(drive, speed - XFER_PIO_0);
+ return ide_config_drive_speed(drive, speed);
+ }
spin_lock_irqsave(&atiixp_lock, flags);
else
pio = speed - XFER_PIO_0;
- atiixp_tuneproc(drive, pio);
+ atiixp_tune_pio(drive, pio);
return ide_config_drive_speed(drive, speed);
}
-/**
- * atiixp_config_drive_for_dma - configure drive for DMA
- * @drive: IDE drive to configure
- *
- * Set up a ATIIXP interface channel for the best available speed.
- * We prefer UDMA if it is available and then MWDMA. If DMA is
- * not available we switch to PIO and return 0.
- */
-
-static int atiixp_config_drive_for_dma(ide_drive_t *drive)
-{
- u8 speed = ide_dma_speed(drive, atiixp_ratemask(drive));
-
- /* If no DMA speed was available then disable DMA and use PIO. */
- if (!speed) {
- u8 tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL);
- speed = atiixp_dma_2_pio(XFER_PIO_0 + tspeed) + XFER_PIO_0;
- }
-
- (void) atiixp_speedproc(drive, speed);
- return ide_dma_enable(drive);
-}
-
/**
* atiixp_dma_check - set up an IDE device
* @drive: IDE drive to configure
static int atiixp_dma_check(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct hd_driveid *id = drive->id;
- u8 tspeed, speed;
-
drive->init_speed = 0;
- if ((id->capability & 1) && drive->autodma) {
+ if (ide_tune_dma(drive))
+ return 0;
- if (ide_use_dma(drive)) {
- if (atiixp_config_drive_for_dma(drive))
- return hwif->ide_dma_on(drive);
- }
-
- goto fast_ata_pio;
+ if (ide_use_fast_pio(drive))
+ atiixp_tuneproc(drive, 255);
- } else if ((id->capability & 8) || (id->field_valid & 2)) {
-fast_ata_pio:
- tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL);
- speed = atiixp_dma_2_pio(XFER_PIO_0 + tspeed) + XFER_PIO_0;
- hwif->speedproc(drive, speed);
- return hwif->ide_dma_off_quietly(drive);
- }
- /* IORDY not supported */
- return 0;
+ return -1;
}
/**
hwif->swdma_mask = 0x04;
pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
+
if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
- hwif->udma_four = 1;
+ hwif->cbl = ATA_CBL_PATA80;
else
- hwif->udma_four = 0;
+ hwif->cbl = ATA_CBL_PATA40;
- hwif->ide_dma_host_on = &atiixp_ide_dma_host_on;
- hwif->ide_dma_host_off = &atiixp_ide_dma_host_off;
+ hwif->dma_host_on = &atiixp_dma_host_on;
+ hwif->dma_host_off = &atiixp_dma_host_off;
hwif->ide_dma_check = &atiixp_dma_check;
if (!noautodma)
hwif->autodma = 1;
{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP300_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
+ { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
{ 0, },
};
MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);
projects / cascardo / linux.git / blobdiff