diff options
Diffstat (limited to 'drivers/ide')
-rw-r--r-- | drivers/ide/pci/serverworks.c | 68 |
1 files changed, 15 insertions, 53 deletions
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c index 2fa6d92d16cc..a94e77d67db3 100644 --- a/drivers/ide/pci/serverworks.c +++ b/drivers/ide/pci/serverworks.c @@ -1,9 +1,10 @@ /* - * linux/drivers/ide/pci/serverworks.c Version 0.8 25 Ebr 2003 + * linux/drivers/ide/pci/serverworks.c Version 0.9 Mar 4 2007 * * Copyright (C) 1998-2000 Michel Aubry * Copyright (C) 1998-2000 Andrzej Krzysztofowicz * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> + * Copyright (C) 2007 Bartlomiej Zolnierkiewicz * Portions copyright (c) 2001 Sun Microsystems * * @@ -136,19 +137,14 @@ static int svwks_tune_chipset (ide_drive_t *drive, u8 xferspeed) ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; - u8 speed; - u8 pio = ide_get_best_pio_mode(drive, 255, 5, NULL); + u8 speed = ide_rate_filter(drive, xferspeed); + u8 pio = ide_get_best_pio_mode(drive, 255, 4, NULL); u8 unit = (drive->select.b.unit & 0x01); u8 csb5 = svwks_csb_check(dev); u8 ultra_enable = 0, ultra_timing = 0; u8 dma_timing = 0, pio_timing = 0; u16 csb5_pio = 0; - if (xferspeed == 255) /* PIO auto-tuning */ - speed = XFER_PIO_0 + pio; - else - speed = ide_rate_filter(drive, xferspeed); - /* If we are about to put a disk into UDMA mode we screwed up. Our code assumes we never _ever_ do this on an OSB4 */ @@ -231,6 +227,9 @@ oem_setup_failed: case XFER_MW_DMA_2: case XFER_MW_DMA_1: case XFER_MW_DMA_0: + /* + * TODO: always setup PIO mode so this won't be needed + */ pio_timing |= pio_modes[pio]; csb5_pio |= (pio << (4*drive->dn)); dma_timing |= dma_modes[speed - XFER_MW_DMA_0]; @@ -242,6 +241,9 @@ oem_setup_failed: case XFER_UDMA_2: case XFER_UDMA_1: case XFER_UDMA_0: + /* + * TODO: always setup PIO mode so this won't be needed + */ pio_timing |= pio_modes[pio]; csb5_pio |= (pio << (4*drive->dn)); dma_timing |= dma_modes[2]; @@ -262,58 +264,18 @@ oem_setup_failed: return (ide_config_drive_speed(drive, speed)); } -static void config_chipset_for_pio (ide_drive_t *drive) -{ - u16 eide_pio_timing[6] = {960, 480, 240, 180, 120, 90}; - u16 xfer_pio = drive->id->eide_pio_modes; - u8 timing, speed, pio; - - pio = ide_get_best_pio_mode(drive, 255, 5, NULL); - - if (xfer_pio > 4) - xfer_pio = 0; - - if (drive->id->eide_pio_iordy > 0) - for (xfer_pio = 5; - xfer_pio>0 && - drive->id->eide_pio_iordy>eide_pio_timing[xfer_pio]; - xfer_pio--); - else - xfer_pio = (drive->id->eide_pio_modes & 4) ? 0x05 : - (drive->id->eide_pio_modes & 2) ? 0x04 : - (drive->id->eide_pio_modes & 1) ? 0x03 : - (drive->id->tPIO & 2) ? 0x02 : - (drive->id->tPIO & 1) ? 0x01 : xfer_pio; - - timing = (xfer_pio >= pio) ? xfer_pio : pio; - - switch(timing) { - case 4: speed = XFER_PIO_4;break; - case 3: speed = XFER_PIO_3;break; - case 2: speed = XFER_PIO_2;break; - case 1: speed = XFER_PIO_1;break; - default: - speed = (!drive->id->tPIO) ? XFER_PIO_0 : XFER_PIO_SLOW; - break; - } - (void) svwks_tune_chipset(drive, speed); - drive->current_speed = speed; -} - static void svwks_tune_drive (ide_drive_t *drive, u8 pio) { - if(pio == 255) - (void) svwks_tune_chipset(drive, 255); - else - (void) svwks_tune_chipset(drive, (XFER_PIO_0 + pio)); + pio = ide_get_best_pio_mode(drive, pio, 4, NULL); + (void)svwks_tune_chipset(drive, XFER_PIO_0 + pio); } static int config_chipset_for_dma (ide_drive_t *drive) { u8 speed = ide_max_dma_mode(drive); - if (!(speed)) - speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL); + if (!speed) + return 0; (void) svwks_tune_chipset(drive, speed); return ide_dma_enable(drive); @@ -327,7 +289,7 @@ static int svwks_config_drive_xfer_rate (ide_drive_t *drive) return 0; if (ide_use_fast_pio(drive)) - config_chipset_for_pio(drive); + svwks_tune_drive(drive, 255); return -1; } |