| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007 AMD |
| * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| static unsigned get_sbdn(unsigned bus) |
| { |
| device_t dev; |
| |
| /* Find the device. */ |
| dev = pci_locate_device_on_bus( |
| PCI_ID(PCI_VENDOR_ID_SIS, PCI_DEVICE_ID_SIS_SIS761), |
| bus); |
| |
| return (dev>>15) & 0x1f; |
| } |
| |
| static void hard_reset(void) |
| { |
| set_bios_reset(); |
| |
| /* full reset */ |
| outb(0x0a, 0x0cf9); |
| outb(0x0e, 0x0cf9); |
| } |
| |
| static void enable_fid_change_on_sb(unsigned sbbusn, unsigned sbdn) |
| { |
| /* default value for sis966 is good */ |
| /* set VFSMAF ( VID/FID System Management Action Field) to 2 */ |
| |
| } |
| |
| static void soft_reset(void) |
| { |
| set_bios_reset(); |
| |
| /* link reset */ |
| outb(0x02, 0x0cf9); |
| outb(0x06, 0x0cf9); |
| |
| } |
| |