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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/pci/hpt366.c
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@@ -669,24 +669,6 @@ static void hpt3xx_tune_drive(ide_drive_t *drive, u8 pio)
(void) hpt3xx_tune_chipset (drive, XFER_PIO_0 + pio);
}
/*
* This allows the configuration of ide_pci chipset registers
* for cards that learn about the drive's UDMA, DMA, PIO capabilities
* after the drive is reported by the OS. Initially designed for
* HPT366 UDMA chipset by HighPoint|Triones Technologies, Inc.
*
*/
static int config_chipset_for_dma(ide_drive_t *drive)
{
u8 speed = ide_max_dma_mode(drive);
if (!speed)
return 0;
(void) hpt3xx_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int hpt3xx_quirkproc(ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;
@@ -741,7 +723,7 @@ static int hpt366_config_drive_xfer_rate(ide_drive_t *drive)
{
drive->init_speed = 0;
if (ide_use_dma(drive) && config_chipset_for_dma(drive))
if (ide_tune_dma(drive))
return 0;
if (ide_use_fast_pio(drive))