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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-10-16 22:29:54 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-10-16 22:29:54 +0200
commit8c91abf86280a1b900619ee0d8ae1840e943110e (patch)
treef78a53e4860fbde0bc0c741ef186c5a40d272b17 /drivers/ide/pci/it8213.c
parent94c7fa0fcc89571b24c90e0a7545ad31aa390f24 (diff)
it8213/piix/slc90e66: remove {it8213,piix,slc90e66}_dma_2_pio()
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/it8213.c')
-rw-r--r--drivers/ide/pci/it8213.c44
1 files changed, 11 insertions, 33 deletions
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index ecf4ce078dc..6dab0daf494 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -18,37 +18,6 @@
#include <asm/io.h>
/**
- * it8213_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 it8213_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;
- }
-}
-
-/**
* it8213_set_pio_mode - set host controller for PIO mode
* @drive: drive
* @pio: PIO mode number
@@ -124,7 +93,7 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
int w_flag = 0x10 << drive->dn;
int u_speed = 0;
u16 reg4042, reg4a;
- u8 reg48, reg54, reg55;
+ u8 reg48, reg54, reg55, pio;
pci_read_config_word(dev, maslave, &reg4042);
pci_read_config_byte(dev, 0x48, &reg48);
@@ -165,7 +134,11 @@ static void it8213_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)
@@ -174,9 +147,14 @@ static void it8213_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 */
}
- it8213_set_pio_mode(drive, it8213_dma_2_pio(speed));
+ it8213_set_pio_mode(drive, pio);
}
/**