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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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20
drivers/ide/ide-dma.c
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@@ -779,6 +779,26 @@ u8 ide_max_dma_mode(ide_drive_t *drive)
EXPORT_SYMBOL_GPL(ide_max_dma_mode);
int ide_tune_dma(ide_drive_t *drive)
{
u8 speed;
/* TODO: use only ide_max_dma_mode() */
if (!ide_use_dma(drive))
return 0;
speed = ide_max_dma_mode(drive);
if (!speed)
return 0;
drive->hwif->speedproc(drive, speed);
return ide_dma_enable(drive);
}
EXPORT_SYMBOL_GPL(ide_tune_dma);
void ide_dma_verbose(ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;