LXR linux/arch/mips/pci/fixup-loongson3.c

   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 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}
  72