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
  29 static 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
  35 int __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
  41 static 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
  64 DECLARE_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 */
  68 int pcibios_plat_dev_init(struct pci_dev *dev)
  69 {
  70         return 0;
  71 }