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ide: add ide_tune_dma() helper

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After reworking the code responsible for selecting the best DMA
transfer mode it is now possible to add generic ide_tune_dma() helper.

Convert some IDE PCI host drivers to use it (the ones left need more work).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2007-05-10 00:01:09 +02:00
parent 2d5eaa6dd7
commit 29e744d088
14 changed files with 34 additions and 206 deletions
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15
drivers/ide/pci/cs5535.c
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@@ -164,26 +164,13 @@ static void cs5535_tuneproc(ide_drive_t *drive, u8 xferspeed)
cs5535_set_speed(drive, xferspeed);
}
static int cs5535_config_drive_for_dma(ide_drive_t *drive)
{
u8 speed = ide_max_dma_mode(drive);
/* If no DMA speed was available then let dma_check hit pio */
if (!speed) {
return 0;
}
cs5535_set_drive(drive, speed);
return ide_dma_enable(drive);
}
static int cs5535_dma_check(ide_drive_t *drive)
{
u8 speed;
drive->init_speed = 0;
if (ide_use_dma(drive) && cs5535_config_drive_for_dma(drive))
if (ide_tune_dma(drive))
return 0;
if (ide_use_fast_pio(drive)) {