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atiixp: remove ->dma_host_on and ->dma_host_off methods

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* Enable/disable UDMA in atiixp_set_dma_mode().

* Remove no longer needed atiixp_dma_host_{on,off}() and save_mdma_mode[].

* Bump driver version.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-01-26 20:13:02 +01:00
parent 07a085ebd3
commit 8ae60e34dd
1 changed files with 18 additions and 53 deletions
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71
drivers/ide/pci/atiixp.c
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@ -1,5 +1,5 @@
/*
* linux/drivers/ide/pci/atiixp.c Version 0.03 Aug 3 2007
* linux/drivers/ide/pci/atiixp.c Version 0.05 Nov 9 2007
*
* Copyright (C) 2003 ATI Inc. <hyu@ati.com>
* Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
@ -43,47 +43,8 @@ static atiixp_ide_timing mdma_timing[] = {
{ 0x02, 0x00 },
};
static int save_mdma_mode[4];
static DEFINE_SPINLOCK(atiixp_lock);
static void atiixp_dma_host_on(ide_drive_t *drive)
{
struct pci_dev *dev = drive->hwif->pci_dev;
unsigned long flags;
u16 tmp16;
spin_lock_irqsave(&atiixp_lock, flags);
pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
if (save_mdma_mode[drive->dn])
tmp16 &= ~(1 << drive->dn);
else
tmp16 |= (1 << drive->dn);
pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);
spin_unlock_irqrestore(&atiixp_lock, flags);
ide_dma_host_on(drive);
}
static void atiixp_dma_host_off(ide_drive_t *drive)
{
struct pci_dev *dev = drive->hwif->pci_dev;
unsigned long flags;
u16 tmp16;
spin_lock_irqsave(&atiixp_lock, flags);
pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
tmp16 &= ~(1 << drive->dn);
pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);
spin_unlock_irqrestore(&atiixp_lock, flags);
ide_dma_host_off(drive);
}
/**
* atiixp_set_pio_mode - set host controller for PIO mode
* @drive: drive
@ -132,26 +93,33 @@ static void atiixp_set_dma_mode(ide_drive_t *drive, const u8 speed)
int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
u32 tmp32;
u16 tmp16;
u16 udma_ctl = 0;
spin_lock_irqsave(&atiixp_lock, flags);
save_mdma_mode[drive->dn] = 0;
pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl);
if (speed >= XFER_UDMA_0) {
pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
tmp16 &= ~(0x07 << (drive->dn * 4));
tmp16 |= ((speed & 0x07) << (drive->dn * 4));
pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
} else {
if ((speed >= XFER_MW_DMA_0) && (speed <= XFER_MW_DMA_2)) {
save_mdma_mode[drive->dn] = speed;
pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
tmp32 &= ~(0xff << timing_shift);
tmp32 |= (mdma_timing[speed & 0x03].recover_width << timing_shift) |
(mdma_timing[speed & 0x03].command_width << (timing_shift + 4));
pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
}
udma_ctl |= (1 << drive->dn);
} else if (speed >= XFER_MW_DMA_0) {
u8 i = speed & 0x03;
pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
tmp32 &= ~(0xff << timing_shift);
tmp32 |= (mdma_timing[i].recover_width << timing_shift) |
(mdma_timing[i].command_width << (timing_shift + 4));
pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
udma_ctl &= ~(1 << drive->dn);
}
pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl);
spin_unlock_irqrestore(&atiixp_lock, flags);
}
@ -181,9 +149,6 @@ static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
hwif->cbl = ATA_CBL_PATA80;
else
hwif->cbl = ATA_CBL_PATA40;
hwif->dma_host_on = &atiixp_dma_host_on;
hwif->dma_host_off = &atiixp_dma_host_off;
}
static const struct ide_port_info atiixp_pci_info[] __devinitdata = {