diff options
Diffstat (limited to 'drivers/ata/pata_sis.c')
| -rw-r--r-- | drivers/ata/pata_sis.c | 91 |
1 files changed, 22 insertions, 69 deletions
diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c index 8af0dc88fd98..5c30d56dec84 100644 --- a/drivers/ata/pata_sis.c +++ b/drivers/ata/pata_sis.c @@ -252,25 +252,24 @@ static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev) } /** - * sis_133_do_piomode - Initialize host controller PATA PIO/DMA timings + * sis_133_set_piomode - Initialize host controller PATA PIO timings * @ap: Port whose timings we are configuring * @adev: Device we are configuring for. * * Set PIO mode for device, in host controller PCI config space. This - * function handles PIO set up for the later ATA133 devices. The same - * timings are used for MWDMA. + * function handles PIO set up for the later ATA133 devices. * * LOCKING: * None (inherited from caller). */ -static void sis_133_do_piomode(struct ata_port *ap, struct ata_device *adev, - int speed) +static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); int port = 0x40; u32 t1; u32 reg54; + int speed = adev->pio_mode - XFER_PIO_0; const u32 timing133[] = { 0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */ @@ -306,42 +305,6 @@ static void sis_133_do_piomode(struct ata_port *ap, struct ata_device *adev, } /** - * sis_133_set_piomode - Initialize host controller PATA PIO timings - * @ap: Port whose timings we are configuring - * @adev: Device we are configuring for. - * - * Set PIO mode for device, in host controller PCI config space. This - * function handles PIO set up for the later ATA133 devices. - * - * LOCKING: - * None (inherited from caller). - */ - -static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev) -{ - - sis_133_do_piomode(ap, adev, adev->pio_mode - XFER_PIO_0); -} - -/** - * mwdma_clip_to_pio - clip MWDMA mode - * @adev: device - * - * As the SiS shared MWDMA and PIO timings we must program the equivalent - * PIO timing for the MWDMA mode but we must not program one higher than - * the permitted PIO timing of the device. - */ - -static int mwdma_clip_to_pio(struct ata_device *adev) -{ - const int mwdma_to_pio[3] = { - XFER_PIO_0, XFER_PIO_3, XFER_PIO_4 - }; - return min(mwdma_to_pio[adev->dma_mode - XFER_MW_DMA_0], - adev->pio_mode - XFER_PIO_0); -} - -/** * sis_old_set_dmamode - Initialize host controller PATA DMA timings * @ap: Port whose timings we are configuring * @adev: Device to program @@ -369,7 +332,6 @@ static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev) if (adev->dma_mode < XFER_UDMA_0) { /* bits 3-0 hold recovery timing bits 8-10 active timing and the higher bits are dependant on the device */ - speed = mwdma_clip_to_pio(adev); timing &= ~0x870F; timing |= mwdma_bits[speed]; } else { @@ -410,7 +372,6 @@ static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev) if (adev->dma_mode < XFER_UDMA_0) { /* bits 3-0 hold recovery timing bits 8-10 active timing and the higher bits are dependant on the device, bit 15 udma */ - speed = mwdma_clip_to_pio(adev); timing &= ~0x870F; timing |= mwdma_bits[speed]; } else { @@ -428,7 +389,7 @@ static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev) * @adev: Device to program * * Set UDMA/MWDMA mode for device, in host controller PCI config space. - * Handles later UDMA100 devices. + * Handles UDMA66 and early UDMA100 devices. * * LOCKING: * None (inherited from caller). @@ -439,25 +400,21 @@ static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev) struct pci_dev *pdev = to_pci_dev(ap->host->dev); int speed = adev->dma_mode - XFER_MW_DMA_0; int drive_pci = sis_old_port_base(adev); - u16 timing; + u8 timing; - const u16 udma_bits[] = { - 0x8B00, 0x8700, 0x8500, 0x8300, 0x8200, 0x8100}; - const u8 mwdma_bits[] = { 0x08, 0x32, 0x31 }; + const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81}; - pci_read_config_word(pdev, drive_pci, &timing); + pci_read_config_byte(pdev, drive_pci + 1, &timing); if (adev->dma_mode < XFER_UDMA_0) { - speed = mwdma_clip_to_pio(adev); - timing &= ~0x80FF; - timing |= mwdma_bits[speed]; + /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */ } else { /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */ speed = adev->dma_mode - XFER_UDMA_0; - timing &= ~0x8F00; + timing &= ~0x8F; timing |= udma_bits[speed]; } - pci_write_config_word(pdev, drive_pci, timing); + pci_write_config_byte(pdev, drive_pci + 1, timing); } /** @@ -477,26 +434,21 @@ static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *a struct pci_dev *pdev = to_pci_dev(ap->host->dev); int speed = adev->dma_mode - XFER_MW_DMA_0; int drive_pci = sis_old_port_base(adev); - u16 timing; - /* Bits 15-12 are timing */ - static const u16 udma_bits[] = { - 0x8F00, 0x8A00, 0x8700, 0x8500, 0x8300, 0x8200, 0x8100 - }; - static const u8 mwdma_bits[] = { 0x08, 0x32, 0x31 }; + u8 timing; + /* Low 4 bits are timing */ + static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81}; - pci_read_config_word(pdev, drive_pci, &timing); + pci_read_config_byte(pdev, drive_pci + 1, &timing); if (adev->dma_mode < XFER_UDMA_0) { - speed = mwdma_clip_to_pio(adev); - timing &= ~0x80FF; - timing = mwdma_bits[speed]; + /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */ } else { /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */ speed = adev->dma_mode - XFER_UDMA_0; - timing &= ~0x8F00; + timing &= ~0x8F; timing |= udma_bits[speed]; } - pci_write_config_word(pdev, drive_pci, timing); + pci_write_config_byte(pdev, drive_pci + 1, timing); } /** @@ -527,12 +479,13 @@ static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev) if (reg54 & 0x40000000) port = 0x70; port += (8 * ap->port_no) + (4 * adev->devno); + pci_read_config_dword(pdev, port, &t1); if (adev->dma_mode < XFER_UDMA_0) { - speed = mwdma_clip_to_pio(adev); - sis_133_do_piomode(ap, adev, speed); - t1 &= ~4; /* UDMA off */ + t1 &= ~0x00000004; + /* FIXME: need data sheet to add MWDMA here. Also lacking on + ide/pci driver */ } else { speed = adev->dma_mode - XFER_UDMA_0; /* if & 8 no UDMA133 - need info for ... */ |
