diff options
Diffstat (limited to 'drivers/ide/pci/serverworks.c')
| -rw-r--r-- | drivers/ide/pci/serverworks.c | 51 |
1 files changed, 32 insertions, 19 deletions
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c index 47bcd91c9b5..d9c4fd1ae99 100644 --- a/drivers/ide/pci/serverworks.c +++ b/drivers/ide/pci/serverworks.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/serverworks.c Version 0.9 Mar 4 2007 + * linux/drivers/ide/pci/serverworks.c Version 0.11 Jun 2 2007 * * Copyright (C) 1998-2000 Michel Aubry * Copyright (C) 1998-2000 Andrzej Krzysztofowicz @@ -170,42 +170,55 @@ static int svwks_tune_chipset (ide_drive_t *drive, u8 xferspeed) if (!drive->init_speed) { u8 dma_stat = inb(hwif->dma_status); -dma_pio: if (((ultra_enable << (7-drive->dn) & 0x80) == 0x80) && ((dma_stat & (1<<(5+unit))) == (1<<(5+unit)))) { drive->current_speed = drive->init_speed = XFER_UDMA_0 + udma_modes[(ultra_timing >> (4*unit)) & ~(0xF0)]; return 0; } else if ((dma_timing) && ((dma_stat&(1<<(5+unit)))==(1<<(5+unit)))) { - u8 dmaspeed = dma_timing; + u8 dmaspeed; - dma_timing &= ~0xFFU; - if ((dmaspeed & 0x20) == 0x20) + switch (dma_timing & 0x77) { + case 0x20: dmaspeed = XFER_MW_DMA_2; - else if ((dmaspeed & 0x21) == 0x21) + break; + case 0x21: dmaspeed = XFER_MW_DMA_1; - else if ((dmaspeed & 0x77) == 0x77) + break; + case 0x77: dmaspeed = XFER_MW_DMA_0; - else + break; + default: goto dma_pio; + } + drive->current_speed = drive->init_speed = dmaspeed; return 0; - } else if (pio_timing) { - u8 piospeed = pio_timing; + } +dma_pio: + if (pio_timing) { + u8 piospeed; - pio_timing &= ~0xFFU; - if ((piospeed & 0x20) == 0x20) + switch (pio_timing & 0x7f) { + case 0x20: piospeed = XFER_PIO_4; - else if ((piospeed & 0x22) == 0x22) + break; + case 0x22: piospeed = XFER_PIO_3; - else if ((piospeed & 0x34) == 0x34) + break; + case 0x34: piospeed = XFER_PIO_2; - else if ((piospeed & 0x47) == 0x47) + break; + case 0x47: piospeed = XFER_PIO_1; - else if ((piospeed & 0x5d) == 0x5d) + break; + case 0x5d: piospeed = XFER_PIO_0; - else + break; + default: goto oem_setup_failed; + } + drive->current_speed = drive->init_speed = piospeed; return 0; } @@ -214,8 +227,8 @@ dma_pio: oem_setup_failed: - pio_timing &= ~0xFFU; - dma_timing &= ~0xFFU; + pio_timing = 0; + dma_timing = 0; ultra_timing &= ~(0x0F << (4*unit)); ultra_enable &= ~(0x01 << drive->dn); csb5_pio &= ~(0x0F << (4*drive->dn)); |