drm/nv50: fix memory detection for cards with >=4GiB VRAM
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 206bd16..2853ba0 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -364,9 +364,14 @@
} else
if (dev_priv->flags & (NV_NFORCE | NV_NFORCE2)) {
dev_priv->vram_size = nouveau_mem_detect_nforce(dev);
- } else {
+ } else
+ if (dev_priv->card_type < NV_50) {
dev_priv->vram_size = nv_rd32(dev, NV04_FIFO_DATA);
dev_priv->vram_size &= NV10_FIFO_DATA_RAM_AMOUNT_MB_MASK;
+ } else {
+ dev_priv->vram_size = nv_rd32(dev, NV04_FIFO_DATA);
+ dev_priv->vram_size |= (dev_priv->vram_size & 0xff) << 32;
+ dev_priv->vram_size &= 0xffffffff00;
if (dev_priv->chipset == 0xaa || dev_priv->chipset == 0xac) {
dev_priv->vram_sys_base = nv_rd32(dev, 0x100e10);
dev_priv->vram_sys_base <<= 12;