cy82c693: add ->set_dma_mode method
* Fix SWDMA/MWDMA masks in cy82c693_chipset.
* Add IDE_HFLAG_CY82C693 host flag and use it in ide_tune_dma() to
check whether the DMA should be enabled even if ide_max_dma_mode()
fails.
* Convert cy82c693_dma_enable() to become cy82c693_set_dma_mode()
and remove no longer needed cy82c693_ide_dma_on(). Then set
IDE_HFLAG_CY82C693 instead of IDE_HFLAG_TRUST_BIOS_FOR_DMA in
cy82c693_chipset.
* Bump driver version.
As a result of this patch cy82c693 driver will configure and use DMA on
all SWDMA0-2 and MWDMA0-2 capable ATA devices instead of relying on BIOS.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 18c78ad..9d6dabb 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -755,6 +755,7 @@
static int ide_tune_dma(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
u8 speed;
if (noautodma || drive->nodma || (drive->id->capability & 1) == 0)
@@ -767,15 +768,21 @@
if (ide_id_dma_bug(drive))
return 0;
- if (drive->hwif->host_flags & IDE_HFLAG_TRUST_BIOS_FOR_DMA)
+ if (hwif->host_flags & IDE_HFLAG_TRUST_BIOS_FOR_DMA)
return config_drive_for_dma(drive);
speed = ide_max_dma_mode(drive);
- if (!speed)
- return 0;
+ if (!speed) {
+ /* is this really correct/needed? */
+ if ((hwif->host_flags & IDE_HFLAG_CY82C693) &&
+ ide_dma_good_drive(drive))
+ return 1;
+ else
+ return 0;
+ }
- if (drive->hwif->host_flags & IDE_HFLAG_NO_SET_MODE)
+ if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)
return 0;
if (ide_set_dma_mode(drive, speed))