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/* by yhlu 2005.10 */
static unsigned get_sbdn(unsigned bus)
{
device_t dev;
/* Find the device.
* There can only be one 8111 on a hypertransport chain/bus.
*/
dev = pci_locate_device_on_bus(
PCI_ID(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_PCI),
bus);
return (dev>>15) & 0x1f;
}
static void enable_cf9_x(unsigned sbbusn, unsigned sbdn)
{
device_t dev;
uint8_t byte;
dev = PCI_DEV(sbbusn, sbdn+1, 3); //ACPI
/* enable cf9 */
byte = pci_read_config8(dev, 0x41);
byte |= (1<<6) | (1<<5);
pci_write_config8(dev, 0x41, byte);
}
static void enable_cf9(void)
{
unsigned sblk = get_sblk();
unsigned sbbusn = get_sbbusn(sblk);
unsigned sbdn = get_sbdn(sbbusn);
enable_cf9_x(sbbusn, sbdn);
}
static void hard_reset(void)
{
set_bios_reset();
/* reset */
enable_cf9();
outb(0x0e, 0x0cf9); // make sure cf9 is enabled
}
static void enable_fid_change_on_sb(unsigned sbbusn, unsigned sbdn)
{
device_t dev;
dev = PCI_DEV(sbbusn, sbdn+1, 3); // ACPI
pci_write_config8(dev, 0x74, 4);
/* set VFSMAF ( VID/FID System Management Action Field) to 2 */
pci_write_config32(dev, 0x70, 2<<12);
}
static void soft_reset_x(unsigned sbbusn, unsigned sbdn)
{
device_t dev;
dev = PCI_DEV(sbbusn, sbdn+1, 0); //ISA
/* Reset */
set_bios_reset();
pci_write_config8(dev, 0x47, 1);
}
static void soft_reset(void)
{
unsigned sblk = get_sblk();
unsigned sbbusn = get_sbbusn(sblk);
unsigned sbdn = get_sbdn(sbbusn);
return soft_reset_x(sbbusn, sbdn);
}
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