diff options
Diffstat (limited to 'drivers/ide/pci/it821x.c')
| -rw-r--r-- | drivers/ide/pci/it821x.c | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c index b761015ee190..1aada445a9c8 100644 --- a/drivers/ide/pci/it821x.c +++ b/drivers/ide/pci/it821x.c @@ -138,8 +138,7 @@ static void it821x_program_udma(ide_drive_t *drive, u16 timing) struct pci_dev *dev = to_pci_dev(hwif->dev); struct it821x_dev *itdev = ide_get_hwifdata(hwif); int channel = hwif->channel; - int unit = drive->select.b.unit; - u8 conf; + u8 unit = drive->dn & 1, conf; /* Program UDMA timing bits */ if(itdev->clock_mode == ATA_66) @@ -168,13 +167,11 @@ static void it821x_clock_strategy(ide_drive_t *drive) ide_hwif_t *hwif = drive->hwif; struct pci_dev *dev = to_pci_dev(hwif->dev); struct it821x_dev *itdev = ide_get_hwifdata(hwif); + ide_drive_t *pair; + int clock, altclock, sel = 0; + u8 unit = drive->dn & 1, v; - u8 unit = drive->select.b.unit; - ide_drive_t *pair = &hwif->drives[1-unit]; - - int clock, altclock; - u8 v; - int sel = 0; + pair = &hwif->drives[1 - unit]; if(itdev->want[0][0] > itdev->want[1][0]) { clock = itdev->want[0][1]; @@ -240,16 +237,17 @@ static void it821x_clock_strategy(ide_drive_t *drive) static void it821x_set_pio_mode(ide_drive_t *drive, const u8 pio) { - ide_hwif_t *hwif = drive->hwif; + ide_hwif_t *hwif = drive->hwif; struct it821x_dev *itdev = ide_get_hwifdata(hwif); - int unit = drive->select.b.unit; - ide_drive_t *pair = &hwif->drives[1 - unit]; - u8 set_pio = pio; + ide_drive_t *pair; + u8 unit = drive->dn & 1, set_pio = pio; /* Spec says 89 ref driver uses 88 */ static u16 pio_timings[]= { 0xAA88, 0xA382, 0xA181, 0x3332, 0x3121 }; static u8 pio_want[] = { ATA_66, ATA_66, ATA_66, ATA_66, ATA_ANY }; + pair = &hwif->drives[1 - unit]; + /* * Compute the best PIO mode we can for a given device. We must * pick a speed that does not cause problems with the other device @@ -286,9 +284,7 @@ static void it821x_tune_mwdma (ide_drive_t *drive, byte mode_wanted) ide_hwif_t *hwif = drive->hwif; struct pci_dev *dev = to_pci_dev(hwif->dev); struct it821x_dev *itdev = (void *)ide_get_hwifdata(hwif); - int unit = drive->select.b.unit; - int channel = hwif->channel; - u8 conf; + u8 unit = drive->dn & 1, channel = hwif->channel, conf; static u16 dma[] = { 0x8866, 0x3222, 0x3121 }; static u8 mwdma_want[] = { ATA_ANY, ATA_66, ATA_ANY }; @@ -325,9 +321,7 @@ static void it821x_tune_udma (ide_drive_t *drive, byte mode_wanted) ide_hwif_t *hwif = drive->hwif; struct pci_dev *dev = to_pci_dev(hwif->dev); struct it821x_dev *itdev = ide_get_hwifdata(hwif); - int unit = drive->select.b.unit; - int channel = hwif->channel; - u8 conf; + u8 unit = drive->dn & 1, channel = hwif->channel, conf; static u16 udma[] = { 0x4433, 0x4231, 0x3121, 0x2121, 0x1111, 0x2211, 0x1111 }; static u8 udma_want[] = { ATA_ANY, ATA_50, ATA_ANY, ATA_66, ATA_66, ATA_50, ATA_66 }; @@ -369,7 +363,8 @@ static void it821x_dma_start(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; struct it821x_dev *itdev = ide_get_hwifdata(hwif); - int unit = drive->select.b.unit; + u8 unit = drive->dn & 1; + if(itdev->mwdma[unit] != MWDMA_OFF) it821x_program(drive, itdev->mwdma[unit]); else if(itdev->udma[unit] != UDMA_OFF && itdev->timing10) @@ -389,9 +384,10 @@ static void it821x_dma_start(ide_drive_t *drive) static int it821x_dma_end(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; - int unit = drive->select.b.unit; struct it821x_dev *itdev = ide_get_hwifdata(hwif); int ret = __ide_dma_end(drive); + u8 unit = drive->dn & 1; + if(itdev->mwdma[unit] != MWDMA_OFF) it821x_program(drive, itdev->pio[unit]); return ret; |