1 | // SPDX-License-Identifier: GPL-2.0+ |
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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(new: 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 |