2 * This file is part of the coreboot project.
4 * Copyright (C) 2005 Linux Networx
5 * (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #include <console/console.h>
22 #include <device/device.h>
23 #include <device/pci.h>
24 #include <device/pci_ids.h>
25 #include <device/agp.h>
27 static void agp_tune_dev(device_t dev)
31 cap = pci_find_capability(dev, PCI_CAP_ID_AGP);
35 /* The OS is responsible for AGP tuning so do nothing here. */
38 unsigned int agp_scan_bus(struct bus *bus, unsigned int min_devfn,
39 unsigned int max_devfn, unsigned int max)
43 max = pci_scan_bus(bus, min_devfn, max_devfn, max);
45 for (child = bus->children; child; child = child->sibling) {
46 if ((child->path.pci.devfn < min_devfn) ||
47 (child->path.pci.devfn > max_devfn)) {
56 unsigned int agp_scan_bridge(device_t dev, unsigned int max)
58 return do_pci_scan_bridge(dev, max, agp_scan_bus);
61 /** Default device operations for AGP bridges. */
62 static struct pci_operations agp_bus_ops_pci = {
66 struct device_operations default_agp_ops_bus = {
67 .read_resources = pci_bus_read_resources,
68 .set_resources = pci_dev_set_resources,
69 .enable_resources = pci_bus_enable_resources,
71 .scan_bus = agp_scan_bridge,
73 .reset_bus = pci_bus_reset,
74 .ops_pci = &agp_bus_ops_pci,