arch/mips/loongson64/vbios_quirk.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2
   3 #include <linux/pci.h>
   4 #include <loongson.h>
   5
   6 static void pci_fixup_video(struct pci_dev *pdev)
   7 {
   8         struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
   9
  10         if (res->start)
  11                 return;
  12
  13         if (!loongson_sysconf.vgabios_addr)
  14                 return;
  15
  16         pci_disable_rom(pdev);
  17         if (res->parent)
  18                 release_resource(res);
  19
  20         res->start = virt_to_phys((void *) loongson_sysconf.vgabios_addr);
  21         res->end   = res->start + 256*1024 - 1;
  22         res->flags = IORESOURCE_MEM | IORESOURCE_ROM_SHADOW |
  23                      IORESOURCE_PCI_FIXED;
  24
  25         dev_info(&pdev->dev, "Video device with shadowed ROM at %pR\n", res);
  26 }
  27 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, 0x9615,
  28                                PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_video);