diff options
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/pci/it8213.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c index 95dbed7e6022..70b3245dbf62 100644 --- a/drivers/ide/pci/it8213.c +++ b/drivers/ide/pci/it8213.c @@ -21,7 +21,7 @@ * it8213_dma_2_pio - return the PIO mode matching DMA * @xfer_rate: transfer speed * - * Returns the nearest equivalent PIO timing for the PIO or DMA + * Returns the nearest equivalent PIO timing for the DMA * mode requested by the controller. */ @@ -35,34 +35,28 @@ static u8 it8213_dma_2_pio (u8 xfer_rate) { case XFER_UDMA_1: case XFER_UDMA_0: case XFER_MW_DMA_2: - case XFER_PIO_4: return 4; case XFER_MW_DMA_1: - case XFER_PIO_3: return 3; case XFER_SW_DMA_2: - case XFER_PIO_2: return 2; case XFER_MW_DMA_0: case XFER_SW_DMA_1: case XFER_SW_DMA_0: - case XFER_PIO_1: - case XFER_PIO_0: - case XFER_PIO_SLOW: default: return 0; } } /* - * it8213_tuneproc - tune a drive + * it8213_tune_pio - tune a drive * @drive: drive to tune * @pio: desired PIO mode * * Set the interface PIO mode. */ -static void it8213_tuneproc (ide_drive_t *drive, u8 pio) +static void it8213_tune_pio(ide_drive_t *drive, const u8 pio) { ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; @@ -82,8 +76,6 @@ static void it8213_tuneproc (ide_drive_t *drive, u8 pio) { 2, 1 }, { 2, 3 }, }; - pio = ide_get_best_pio_mode(drive, pio, 4); - spin_lock_irqsave(&tune_lock, flags); pci_read_config_word(dev, master_port, &master_data); @@ -113,6 +105,13 @@ static void it8213_tuneproc (ide_drive_t *drive, u8 pio) spin_unlock_irqrestore(&tune_lock, flags); } +static void it8213_tuneproc(ide_drive_t *drive, u8 pio) +{ + pio = ide_get_best_pio_mode(drive, pio, 4); + it8213_tune_pio(drive, pio); + ide_config_drive_speed(drive, XFER_PIO_0 + pio); +} + /** * it8213_tune_chipset - set controller timings * @drive: Drive to set up @@ -193,7 +192,12 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed) if (reg55 & w_flag) pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); } - it8213_tuneproc(drive, it8213_dma_2_pio(speed)); + + if (speed > XFER_PIO_4) + it8213_tune_pio(drive, it8213_dma_2_pio(speed)); + else + it8213_tune_pio(drive, speed - XFER_PIO_0); + return ide_config_drive_speed(drive, speed); } @@ -209,13 +213,10 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed) static int it8213_config_drive_for_dma (ide_drive_t *drive) { - u8 pio; - if (ide_tune_dma(drive)) return 0; - pio = ide_get_best_pio_mode(drive, 255, 4); - it8213_tune_chipset(drive, XFER_PIO_0 + pio); + it8213_tuneproc(drive, 255); return -1; } |