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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/mips/loongson64/vbios_quirk.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/loongson64/vbios_quirk.c')
-rw-r--r--arch/mips/loongson64/vbios_quirk.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/mips/loongson64/vbios_quirk.c b/arch/mips/loongson64/vbios_quirk.c
new file mode 100644
index 0000000000..3115d4de98
--- /dev/null
+++ b/arch/mips/loongson64/vbios_quirk.c
@@ -0,0 +1,28 @@
+// 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);