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it8213/piix/slc90e66: remove {it8213,piix,slc90e66}_dma_2_pio()

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Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2007-10-16 22:29:54 +02:00
父節點 94c7fa0fcc
當前提交 8c91abf862
共有 3 個文件被更改，包括 33 次插入 和 88 次删除
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44
drivers/ide/pci/piix.c
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@@ -105,37 +105,6 @@
static int no_piix_dma;
/**
* piix_dma_2_pio - return the PIO mode matching DMA
* @xfer_rate: transfer speed
*
* Returns the nearest equivalent PIO timing for the DMA
* mode requested by the controller.
*/
static u8 piix_dma_2_pio (u8 xfer_rate) {
switch(xfer_rate) {
case XFER_UDMA_6:
case XFER_UDMA_5:
case XFER_UDMA_4:
case XFER_UDMA_3:
case XFER_UDMA_2:
case XFER_UDMA_1:
case XFER_UDMA_0:
case XFER_MW_DMA_2:
return 4;
case XFER_MW_DMA_1:
return 3;
case XFER_SW_DMA_2:
return 2;
case XFER_MW_DMA_0:
case XFER_SW_DMA_1:
case XFER_SW_DMA_0:
default:
return 0;
}
}
/**
* piix_set_pio_mode - set host controller for PIO mode
* @drive: drive
@@ -225,7 +194,7 @@ static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed)
int u_speed = 0;
int sitre;
u16 reg4042, reg4a;
u8 reg48, reg54, reg55;
u8 reg48, reg54, reg55, pio;
pci_read_config_word(dev, maslave, &reg4042);
sitre = (reg4042 & 0x4000) ? 1 : 0;
@@ -262,7 +231,11 @@ static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed)
pci_write_config_byte(dev, 0x54, reg54 | v_flag);
} else
pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
pio = 4;
} else {
const u8 mwdma_to_pio[] = { 0, 3, 4 };
if (reg48 & u_flag)
pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
if (reg4a & a_speed)
@@ -271,9 +244,14 @@ static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed)
pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
if (reg55 & w_flag)
pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
if (speed >= XFER_MW_DMA_0)
pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
else
pio = 2; /* only SWDMA2 is allowed */
}
piix_set_pio_mode(drive, piix_dma_2_pio(speed));
piix_set_pio_mode(drive, pio);
}
/**