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);
29
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