1/*
 2 * fixup-loongson3.c
 3 *
 4 * Copyright (C) 2012 Lemote, Inc.
 5 * Author: Xiang Yu, xiangy@lemote.com
 6 *         Chen Huacai, chenhc@lemote.com
 7 *
 8 * This program is free software; you can redistribute  it and/or modify it
 9 * under  the terms of  the GNU General  Public License as published by the
10 * Free Software Foundation;  either version 2 of the  License, or (at your
11 * option) any later version.
12 *
13 * THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
14 * WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
16 * NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
19 * USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 */
25
26#include <linux/pci.h>
27#include <boot_param.h>
28
29static void print_fixup_info(const struct pci_dev *pdev)
30{
31	dev_info(&pdev->dev, "Device %x:%x, irq %d\n",
32			pdev->vendor, pdev->device, pdev->irq);
33}
34
35int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
36{
37	print_fixup_info(dev);
38	return dev->irq;
39}
40
41static void pci_fixup_radeon(struct pci_dev *pdev)
42{
43	struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
44
45	if (res->start)
46		return;
47
48	if (!loongson_sysconf.vgabios_addr)
49		return;
50
51	pci_disable_rom(pdev);
52	if (res->parent)
53		release_resource(res);
54
55	res->start = virt_to_phys((void *) loongson_sysconf.vgabios_addr);
56	res->end   = res->start + 256*1024 - 1;
57	res->flags = IORESOURCE_MEM | IORESOURCE_ROM_SHADOW |
58		     IORESOURCE_PCI_FIXED;
59
60	dev_info(&pdev->dev, "BAR %d: assigned %pR for Radeon ROM\n",
61		 PCI_ROM_RESOURCE, res);
62}
63
64DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
65				PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon);
66
67/* Do platform specific device initialization at pci_enable_device() time */
68int pcibios_plat_dev_init(struct pci_dev *dev)
69{
70	return 0;
71}