diff options
| -rw-r--r-- | drivers/ide/ppc/pmac.c | 102 |
1 files changed, 4 insertions, 98 deletions
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c index d6a1a9be58a..ad58c7ecf85 100644 --- a/drivers/ide/ppc/pmac.c +++ b/drivers/ide/ppc/pmac.c @@ -1671,108 +1671,19 @@ pmac_ide_destroy_dmatable (ide_drive_t *drive) } /* - * Pick up best MDMA timing for the drive and apply it - */ -static int -pmac_ide_mdma_enable(ide_drive_t *drive, u16 mode) -{ - ide_hwif_t *hwif = HWIF(drive); - pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data; - u32 *timings, *timings2; - u32 timing_local[2]; - int ret; - - /* which drive is it ? */ - timings = &pmif->timings[drive->select.b.unit & 0x01]; - timings2 = &pmif->timings[(drive->select.b.unit & 0x01) + 2]; - - /* Copy timings to local image */ - timing_local[0] = *timings; - timing_local[1] = *timings2; - - /* Calculate controller timings */ - set_timings_mdma(drive, pmif->kind, &timing_local[0], &timing_local[1], mode); - - /* Set feature on drive */ - printk(KERN_INFO "%s: Enabling MultiWord DMA %d\n", drive->name, mode & 0xf); - ret = pmac_ide_do_setfeature(drive, mode); - if (ret) { - printk(KERN_WARNING "%s: Failed !\n", drive->name); - return 0; - } - - /* Apply timings to controller */ - *timings = timing_local[0]; - *timings2 = timing_local[1]; - - return 1; -} - -/* - * Pick up best UDMA timing for the drive and apply it - */ -static int -pmac_ide_udma_enable(ide_drive_t *drive, u16 mode) -{ - ide_hwif_t *hwif = HWIF(drive); - pmac_ide_hwif_t* pmif = (pmac_ide_hwif_t *)hwif->hwif_data; - u32 *timings, *timings2; - u32 timing_local[2]; - int ret; - - /* which drive is it ? */ - timings = &pmif->timings[drive->select.b.unit & 0x01]; - timings2 = &pmif->timings[(drive->select.b.unit & 0x01) + 2]; - - /* Copy timings to local image */ - timing_local[0] = *timings; - timing_local[1] = *timings2; - - /* Calculate timings for interface */ - if (pmif->kind == controller_un_ata6 - || pmif->kind == controller_k2_ata6) - ret = set_timings_udma_ata6( &timing_local[0], - &timing_local[1], - mode); - else if (pmif->kind == controller_sh_ata6) - ret = set_timings_udma_shasta( &timing_local[0], - &timing_local[1], - mode); - else - ret = set_timings_udma_ata4(&timing_local[0], mode); - if (ret) - return 0; - - /* Set feature on drive */ - printk(KERN_INFO "%s: Enabling Ultra DMA %d\n", drive->name, mode & 0x0f); - ret = pmac_ide_do_setfeature(drive, mode); - if (ret) { - printk(KERN_WARNING "%s: Failed !\n", drive->name); - return 0; - } - - /* Apply timings to controller */ - *timings = timing_local[0]; - *timings2 = timing_local[1]; - - return 1; -} - -/* * Check what is the best DMA timing setting for the drive and * call appropriate functions to apply it. */ static int pmac_ide_dma_check(ide_drive_t *drive) { - struct hd_driveid *id = drive->id; - ide_hwif_t *hwif = HWIF(drive); int enable = 1; + drive->using_dma = 0; if (drive->media == ide_floppy) enable = 0; - if (((id->capability & 1) == 0) && !__ide_dma_good_drive(drive)) + if ((drive->id->capability & 1) == 0 && !__ide_dma_good_drive(drive)) enable = 0; if (__ide_dma_bad_drive(drive)) enable = 0; @@ -1780,13 +1691,8 @@ pmac_ide_dma_check(ide_drive_t *drive) if (enable) { u8 mode = ide_max_dma_mode(drive); - if (mode >= XFER_UDMA_0) - drive->using_dma = pmac_ide_udma_enable(drive, mode); - else if (mode >= XFER_MW_DMA_0) - drive->using_dma = pmac_ide_mdma_enable(drive, mode); - - /* Apply settings to controller */ - pmac_ide_do_update_timings(drive); + if (mode && pmac_ide_tune_chipset(drive, mode) == 0) + drive->using_dma = 1; } return 0; } |