2 * This file is part of the LinuxBIOS project.
4 * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published by
8 * the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include <device/device.h>
21 #include <device/pci.h>
22 #include <device/pci_ids.h>
23 #include <console/console.h>
25 static void bridge_enable(struct device *dev)
27 print_debug("B188 device dump\n");
29 /* VIA recommends this, sorry no known info. */
30 writeback(dev, 0x40, 0x91);
31 writeback(dev, 0x41, 0x40);
32 writeback(dev, 0x43, 0x44);
33 writeback(dev, 0x44, 0x31);
34 writeback(dev, 0x45, 0x3a);
35 writeback(dev, 0x46, 0x88); /* PCI ID lo */
36 writeback(dev, 0x47, 0xb1); /* PCI ID hi */
37 writeback(dev, 0x3e, 0x16); /* Bridge control */
42 static const struct device_operations bridge_ops = {
43 .read_resources = pci_bus_read_resources,
44 .set_resources = pci_dev_set_resources,
45 .enable_resources = pci_bus_enable_resources,
46 .enable = bridge_enable,
47 .scan_bus = pci_scan_bridge,
48 .reset_bus = pci_bus_reset,
52 static const struct pci_driver northbridge_driver __pci_driver = {
54 .vendor = PCI_VENDOR_ID_VIA,
55 .device = PCI_DEVICE_ID_VIA_K8T890CE_BR,