1 // SPDX-License-Identifier: GPL-2.0+
2 
3 #include <linux/pci.h>
4 #include <loongson.h>
5 
6 static void pci_fixup_radeon(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, "BAR %d: assigned %pR for Radeon ROM\n",
26 		 PCI_ROM_RESOURCE, res);
27 }
28 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, 0x9615,
29 				PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon);
30