drm/nouveau: fix fetching vbios from above 4GiB vram addresses
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index ff339df..1aa73d3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -135,13 +135,14 @@
int i;
if (dev_priv->card_type >= NV_50) {
- uint32_t vbios_vram = (nv_rd32(dev, 0x619f04) & ~0xff) << 8;
-
- if (!vbios_vram)
- vbios_vram = (nv_rd32(dev, 0x1700) << 16) + 0xf0000;
+ u64 addr = (u64)(nv_rd32(dev, 0x619f04) & 0xffffff00) << 8;
+ if (!addr) {
+ addr = (u64)nv_rd32(dev, 0x1700) << 16;
+ addr += 0xf0000;
+ }
old_bar0_pramin = nv_rd32(dev, 0x1700);
- nv_wr32(dev, 0x1700, vbios_vram >> 16);
+ nv_wr32(dev, 0x1700, addr >> 16);
}
/* bail if no rom signature */