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author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-02-17 02:40:25 +0100 |
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committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-02-17 02:40:25 +0100 |
commit | 7569e8dc2213ecc47024ea5edbadc8736487d926 (patch) | |
tree | 44c47e85b5e87c75972c077da31f198c4f597688 /drivers/ide/pci/cs5535.c | |
parent | 056a697b7388844a1341e92e277bff8e5bf61ec9 (diff) | |
download | linux-7569e8dc2213ecc47024ea5edbadc8736487d926.tar.bz2 |
ide: add ide_use_fast_pio() helper (v3)
* add ide_use_fast_pio() helper for use by host drivers
* add DMA capability and hwif->autodma checks to ide_use_dma()
- au1xxx-ide/it8213/it821x drivers didn't check for (id->capability & 1)
[ for the IT8211/2 in SMART mode this check shouldn't be made but since
in it821x_fixups() we set DMA bit explicitly:
if(strstr(id->model, "Integrated Technology Express")) {
/* In raid mode the ident block is slightly buggy
We need to set the bits so that the IDE layer knows
LBA28. LBA48 and DMA ar valid */
id->capability |= 3; /* LBA28, DMA */
we are better off using generic helper if we can ]
- ide-cris driver didn't set ->autodma
[ before the patch hwif->autodma was only checked in the chipset specific
hwif->ide_dma_check implementations, for ide-cris it is cris_dma_check()
function so there no behavior change here ]
v2:
* updated patch description (thanks to Alan Cox for the feedback)
v3:
* updated for scc_pata driver
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/cs5535.c')
-rw-r--r-- | drivers/ide/pci/cs5535.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c index 5c5aec28e671..e47653f4d1dd 100644 --- a/drivers/ide/pci/cs5535.c +++ b/drivers/ide/pci/cs5535.c @@ -196,21 +196,14 @@ static int cs5535_config_drive_for_dma(ide_drive_t *drive) static int cs5535_dma_check(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - struct hd_driveid *id = drive->id; u8 speed; drive->init_speed = 0; - if ((id->capability & 1) && drive->autodma) { - if (ide_use_dma(drive)) { - if (cs5535_config_drive_for_dma(drive)) - return hwif->ide_dma_on(drive); - } - - goto fast_ata_pio; + if (ide_use_dma(drive) && cs5535_config_drive_for_dma(drive)) + return hwif->ide_dma_on(drive); - } else if ((id->capability & 8) || (id->field_valid & 2)) { -fast_ata_pio: + if (ide_use_fast_pio(drive)) { speed = ide_get_best_pio_mode(drive, 255, 4, NULL); cs5535_set_drive(drive, speed); return hwif->ide_dma_off_quietly(drive); |