Quelle  vbios_quirk.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0+

#include <linux/pci.h>
#include <loongson.h>

static void pci_fixup_video(struct pci_dev *pdev)
{
 struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];

 if (res->start)
  return;

 if (!loongson_sysconf.vgabios_addr)
  return;

 pci_disable_rom(pdev);
 if (res->parent)
  release_resource(res);

 res->start = virt_to_phys((void *) loongson_sysconf.vgabios_addr);
 res->end   = res->start + 256*1024 - 1;
 res->flags = IORESOURCE_MEM | IORESOURCE_ROM_SHADOW |
       IORESOURCE_PCI_FIXED;

 dev_info(&pdev->dev, "Video device with shadowed ROM at %pR\n", res);
}
DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, 0x9615,
          PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_video);