diff options
Diffstat (limited to 'drivers/ata/ata_piix.c')
| -rw-r--r-- | drivers/ata/ata_piix.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 12b3a42fb35..1a4c03d5de9 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -127,7 +127,7 @@ enum { ich6_sata_ahci = 8, ich6m_sata_ahci = 9, ich8_sata_ahci = 10, - + /* constants for mapping table */ P0 = 0, /* port 0 */ P1 = 1, /* port 1 */ @@ -196,7 +196,7 @@ static const struct pci_device_id piix_pci_tbl[] = { { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 }, /* C-ICH (i810E2) */ { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, - /* ESB (855GME/875P + 6300ESB) UDMA 100 */ + /* ESB (855GME/875P + 6300ESB) UDMA 100 */ { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, /* ICH6 (and 6) (i915) UDMA 100 */ { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, @@ -458,7 +458,7 @@ static struct ata_port_info piix_port_info[] = { .udma_mask = ATA_UDMA4, .port_ops = &ich_pata_ops, }, - + /* ich_pata_100: 3 */ { .sht = &piix_sht, @@ -759,7 +759,7 @@ static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev) u8 slave_data; u8 udma_enable; int control = 0; - + /* * See Intel Document 298600-004 for the timing programing rules * for ICH controllers. @@ -777,7 +777,7 @@ static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev) if (ata_pio_need_iordy(adev)) control |= 2; /* IE enable */ - /* Intel specifies that the PPE functionality is for disk only */ + /* Intel specifies that the PPE functionality is for disk only */ if (adev->class == ATA_DEV_ATA) control |= 4; /* PPE enable */ @@ -806,7 +806,7 @@ static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev) /* Ensure the UDMA bit is off - it will be turned back on if UDMA is selected */ - + if (ap->udma_mask) { pci_read_config_byte(dev, 0x48, &udma_enable); udma_enable &= ~(1 << (2 * ap->port_no + adev->devno)); @@ -835,7 +835,7 @@ static void do_pata_set_dmamode (struct ata_port *ap, struct ata_device *adev, i u8 speed = adev->dma_mode; int devid = adev->devno + 2 * ap->port_no; u8 udma_enable; - + static const /* ISP RTC */ u8 timings[][2] = { { 0, 0 }, { 0, 0 }, @@ -851,13 +851,13 @@ static void do_pata_set_dmamode (struct ata_port *ap, struct ata_device *adev, i u16 udma_timing; u16 ideconf; int u_clock, u_speed; - + /* * UDMA is handled by a combination of clock switching and - * selection of dividers - * + * selection of dividers + * * Handy rule: Odd modes are UDMATIMx 01, even are 02 - * except UDMA0 which is 00 + * except UDMA0 which is 00 */ u_speed = min(2 - (udma & 1), udma); if (udma == 5) @@ -866,16 +866,16 @@ static void do_pata_set_dmamode (struct ata_port *ap, struct ata_device *adev, i u_clock = 1; /* 66Mhz */ else u_clock = 0; /* 33Mhz */ - + udma_enable |= (1 << devid); - + /* Load the CT/RP selection */ pci_read_config_word(dev, 0x4A, &udma_timing); udma_timing &= ~(3 << (4 * devid)); udma_timing |= u_speed << (4 * devid); pci_write_config_word(dev, 0x4A, udma_timing); - if (isich) { + if (isich) { /* Select a 33/66/100Mhz clock */ pci_read_config_word(dev, 0x54, &ideconf); ideconf &= ~(0x1001 << devid); @@ -897,12 +897,12 @@ static void do_pata_set_dmamode (struct ata_port *ap, struct ata_device *adev, i XFER_PIO_0, XFER_PIO_3, XFER_PIO_4 }; int pio = needed_pio[mwdma] - XFER_PIO_0; - + control = 3; /* IORDY|TIME1 */ - + /* If the drive MWDMA is faster than it can do PIO then we must force PIO into PIO0 */ - + if (adev->pio_mode < needed_pio[mwdma]) /* Enable DMA timing only */ control |= 8; /* PIO cycles in PIO0 */ @@ -916,7 +916,7 @@ static void do_pata_set_dmamode (struct ata_port *ap, struct ata_device *adev, i slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0); pci_write_config_byte(dev, 0x44, slave_data); } else { /* Master */ - master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY + master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY and master timing bits */ master_data |= control; master_data |= |