diff options
Diffstat (limited to 'drivers/ata/pata_sl82c105.c')
| -rw-r--r-- | drivers/ata/pata_sl82c105.c | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/drivers/ata/pata_sl82c105.c b/drivers/ata/pata_sl82c105.c index 47b290b5604a..f8499786917a 100644 --- a/drivers/ata/pata_sl82c105.c +++ b/drivers/ata/pata_sl82c105.c @@ -8,7 +8,7 @@ * * and in part on the documentation and errata sheet */ - + #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> @@ -40,7 +40,7 @@ enum { * * Set up cable type and use generic probe init */ - + static int sl82c105_pre_reset(struct ata_port *ap) { static const struct pci_bits sl82c105_enable_bits[] = { @@ -75,7 +75,7 @@ static void sl82c105_error_handler(struct ata_port *ap) * so a configure_dmamode call will undo any work we do here and vice * versa */ - + static void sl82c105_configure_piomode(struct ata_port *ap, struct ata_device *adev, int pio) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); @@ -84,7 +84,7 @@ static void sl82c105_configure_piomode(struct ata_port *ap, struct ata_device *a }; u16 dummy; int timing = 0x44 + (8 * ap->port_no) + (4 * adev->devno); - + pci_write_config_word(pdev, timing, pio_timing[pio]); /* Can we lose this oddity of the old driver */ pci_read_config_word(pdev, timing, &dummy); @@ -98,7 +98,7 @@ static void sl82c105_configure_piomode(struct ata_port *ap, struct ata_device *a * Called to do the PIO mode setup. Our timing registers are shared * but we want to set the PIO timing by default. */ - + static void sl82c105_set_piomode(struct ata_port *ap, struct ata_device *adev) { sl82c105_configure_piomode(ap, adev, adev->pio_mode - XFER_PIO_0); @@ -112,7 +112,7 @@ static void sl82c105_set_piomode(struct ata_port *ap, struct ata_device *adev) * Load DMA cycle times into the chip ready for a DMA transfer * to occur. */ - + static void sl82c105_configure_dmamode(struct ata_port *ap, struct ata_device *adev) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); @@ -122,7 +122,7 @@ static void sl82c105_configure_dmamode(struct ata_port *ap, struct ata_device *a u16 dummy; int timing = 0x44 + (8 * ap->port_no) + (4 * adev->devno); int dma = adev->dma_mode - XFER_MW_DMA_0; - + pci_write_config_word(pdev, timing, dma_timing[dma]); /* Can we lose this oddity of the old driver */ pci_read_config_word(pdev, timing, &dummy); @@ -137,7 +137,7 @@ static void sl82c105_configure_dmamode(struct ata_port *ap, struct ata_device *a * for the device in question. Set appropriate PIO timings not DMA * timings at this point. */ - + static void sl82c105_set_dmamode(struct ata_port *ap, struct ata_device *adev) { switch(adev->dma_mode) { @@ -152,7 +152,7 @@ static void sl82c105_set_dmamode(struct ata_port *ap, struct ata_device *adev) break; default: BUG(); - } + } } /** @@ -160,16 +160,16 @@ static void sl82c105_set_dmamode(struct ata_port *ap, struct ata_device *adev) * @ap: ATA interface * * The sl82c105 has some serious problems with the DMA engine - * when transfers don't run as expected or ATAPI is used. The + * when transfers don't run as expected or ATAPI is used. The * recommended fix is to reset the engine each use using a chip * test register. */ - + static void sl82c105_reset_engine(struct ata_port *ap) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); u16 val; - + pci_read_config_word(pdev, 0x7E, &val); pci_write_config_word(pdev, 0x7E, val | 4); pci_write_config_word(pdev, 0x7E, val & ~4); @@ -180,21 +180,21 @@ static void sl82c105_reset_engine(struct ata_port *ap) * @qc: ATA command * * Reset the DMA engine each use as recommended by the errata - * document. + * document. * * FIXME: if we switch clock at BMDMA start/end we might get better * PIO performance on DMA capable devices. */ - + static void sl82c105_bmdma_start(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; sl82c105_reset_engine(ap); - + /* Set the clocks for DMA */ sl82c105_configure_dmamode(ap, qc->dev); - /* Activate DMA */ + /* Activate DMA */ ata_bmdma_start(qc); } @@ -212,14 +212,14 @@ static void sl82c105_bmdma_start(struct ata_queued_cmd *qc) * We assume bmdma_stop is always called if bmdma_start as called. If * not then we may need to wrap qc_issue. */ - + static void sl82c105_bmdma_stop(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; ata_bmdma_stop(qc); sl82c105_reset_engine(ap); - + /* This will redo the initial setup of the DMA device to matching PIO timings */ sl82c105_set_dmamode(ap, qc->dev); @@ -269,11 +269,11 @@ static struct ata_port_operations sl82c105_port_ops = { .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, - + .port_start = ata_port_start, .port_stop = ata_port_stop, .host_stop = ata_host_stop -}; +}; /** * sl82c105_bridge_revision - find bridge version @@ -283,7 +283,7 @@ static struct ata_port_operations sl82c105_port_ops = { * providing it is a Winbond 553 reports the revision. If it cannot * find a revision or the right device it returns -1 */ - + static int sl82c105_bridge_revision(struct pci_dev *pdev) { struct pci_dev *bridge; @@ -315,7 +315,7 @@ static int sl82c105_bridge_revision(struct pci_dev *pdev) return rev; } - + static int sl82c105_init_one(struct pci_dev *dev, const struct pci_device_id *id) { static struct ata_port_info info_dma = { @@ -336,7 +336,7 @@ static int sl82c105_init_one(struct pci_dev *dev, const struct pci_device_id *id int rev; rev = sl82c105_bridge_revision(dev); - + if (rev == -1) dev_printk(KERN_WARNING, &dev->dev, "pata_sl82c105: Unable to find bridge, disabling DMA.\n"); else if (rev <= 5) @@ -345,7 +345,7 @@ static int sl82c105_init_one(struct pci_dev *dev, const struct pci_device_id *id port_info[0] = &info_dma; port_info[1] = &info_dma; } - + pci_read_config_dword(dev, 0x40, &val); val |= CTRL_P0EN | CTRL_P0F16 | CTRL_P1F16; pci_write_config_dword(dev, 0x40, val); |