diff options
Diffstat (limited to 'src/southbridge/via/vt8231/vt8231_ide.c')
| -rw-r--r-- | src/southbridge/via/vt8231/vt8231_ide.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/src/southbridge/via/vt8231/vt8231_ide.c b/src/southbridge/via/vt8231/vt8231_ide.c index c1df5ef5cd..46479c4af3 100644 --- a/src/southbridge/via/vt8231/vt8231_ide.c +++ b/src/southbridge/via/vt8231/vt8231_ide.c @@ -18,7 +18,7 @@ static void ide_init(struct device *dev) * or it is possibly a timing issue. Ben Hewson 29 Apr 2007. */ - /* + /* printk(BIOS_INFO, "%s: enabling compatibility IDE addresses\n", __func__); enables = pci_read_config8(dev, 0x42); printk(BIOS_DEBUG, "enables in reg 0x42 0x%x\n", enables); @@ -28,73 +28,73 @@ static void ide_init(struct device *dev) printk(BIOS_DEBUG, "enables in reg 0x42 read back as 0x%x\n", enables); */ } - + enables = pci_read_config8(dev, 0x40); printk(BIOS_DEBUG, "enables in reg 0x40 0x%x\n", enables); enables |= 3; pci_write_config8(dev, 0x40, enables); enables = pci_read_config8(dev, 0x40); printk(BIOS_DEBUG, "enables in reg 0x40 read back as 0x%x\n", enables); - + // Enable prefetch buffers enables = pci_read_config8(dev, 0x41); enables |= 0xf0; pci_write_config8(dev, 0x41, enables); - + // Lower thresholds (cause award does it) enables = pci_read_config8(dev, 0x43); enables &= ~0x0f; enables |= 0x05; pci_write_config8(dev, 0x43, enables); - + // PIO read prefetch counter (cause award does it) pci_write_config8(dev, 0x44, 0x18); - + // Use memory read multiple pci_write_config8(dev, 0x45, 0x1c); - - // address decoding. + + // address decoding. // we want "flexible", i.e. 1f0-1f7 etc. or native PCI - // kevinh@ispiri.com - the standard linux drivers seem ass slow when + // kevinh@ispiri.com - the standard linux drivers seem ass slow when // used in native mode - I've changed back to classic enables = pci_read_config8(dev, 0x9); printk(BIOS_DEBUG, "enables in reg 0x9 0x%x\n", enables); - // by the book, set the low-order nibble to 0xa. + // by the book, set the low-order nibble to 0xa. if (conf->enable_native_ide) { enables &= ~0xf; - // cf/cg silicon needs an 'f' here. + // cf/cg silicon needs an 'f' here. enables |= 0xf; } else { enables &= ~0x5; } - + pci_write_config8(dev, 0x9, enables); enables = pci_read_config8(dev, 0x9); printk(BIOS_DEBUG, "enables in reg 0x9 read back as 0x%x\n", enables); - - // standard bios sets master bit. + + // standard bios sets master bit. enables = pci_read_config8(dev, 0x4); printk(BIOS_DEBUG, "command in reg 0x4 0x%x\n", enables); enables |= 7; - + // No need for stepping - kevinh@ispiri.com enables &= ~0x80; - + pci_write_config8(dev, 0x4, enables); enables = pci_read_config8(dev, 0x4); printk(BIOS_DEBUG, "command in reg 0x4 reads back as 0x%x\n", enables); - + if (!conf->enable_native_ide) { // Use compatability mode - per award bios pci_write_config32(dev, 0x10, 0x0); pci_write_config32(dev, 0x14, 0x0); pci_write_config32(dev, 0x18, 0x0); pci_write_config32(dev, 0x1c, 0x0); - + // Force interrupts to use compat mode - just like Award bios pci_write_config8(dev, 0x3d, 00); pci_write_config8(dev, 0x3c, 0xff); - } + } } static struct device_operations ide_ops = { |