diff options
| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-13 17:47:50 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-13 17:47:50 +0200 |
| commit | 254bb5503611da57240ed6df1cfe6d7f0f185027 (patch) | |
| tree | 6ba845e77e6173bb0a3ba09d7934bc8f07974a9d /drivers | |
| parent | aedea5910ce44fea79e2c517bb22e0006372156f (diff) | |
ide-pmac: use ide_tune_dma() (take 2)
* Add missing initialization of hwif->autodma and drive->autodma to
pmac_ide_setup_dma().
* Use ide_tune_dma() in pmac_ide_dma_check().
While at it:
* Fix pmac_ide_dma_check() return value if DMA mode is not programmed
(should be "-1" otherwise ide_set_dma() will try to enable DMA).
* Remove unnecessary drive->using_dma fiddling (->dma_off_quietly is always
called before ide_set_dma() call and ide_set_dma() calls ->ide_dma_on if
->ide_dma_check returns "0").
v2:
* No reason to blacklist all ide_floppy devices and the old code was always
enabling DMA anyway (without even programming controller/device if the
device was ide_floppy).
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ide/ppc/pmac.c | 25 |
1 files changed, 7 insertions, 18 deletions
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c index 24f73291c4d..a1d24cd1293 100644 --- a/drivers/ide/ppc/pmac.c +++ b/drivers/ide/ppc/pmac.c @@ -1593,24 +1593,10 @@ pmac_ide_destroy_dmatable (ide_drive_t *drive) static int pmac_ide_dma_check(ide_drive_t *drive) { - int enable = 1; + if (ide_tune_dma(drive)) + return 0; - drive->using_dma = 0; - - if (drive->media == ide_floppy) - enable = 0; - if ((drive->id->capability & 1) == 0 && !__ide_dma_good_drive(drive)) - enable = 0; - if (__ide_dma_bad_drive(drive)) - enable = 0; - - if (enable) { - u8 mode = ide_max_dma_mode(drive); - - if (mode && pmac_ide_tune_chipset(drive, mode) == 0) - drive->using_dma = 1; - } - return 0; + return -1; } /* @@ -1844,7 +1830,10 @@ pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif) hwif->mwdma_mask = 0x07; hwif->swdma_mask = 0x00; break; - } + } + + hwif->autodma = 1; + hwif->drives[1].autodma = hwif->drives[0].autodma = hwif->autodma; } #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */ |