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-rw-r--r--shared-core/nouveau_state.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/shared-core/nouveau_state.c b/shared-core/nouveau_state.c
index 7c9503e8..16c86494 100644
--- a/shared-core/nouveau_state.c
+++ b/shared-core/nouveau_state.c
@@ -454,6 +454,9 @@ int nouveau_firstopen(struct drm_device *dev)
return 0;
}
+#define NV40_CHIPSET_MASK 0x00000baf
+#define NV44_CHIPSET_MASK 0x00005450
+
int nouveau_load(struct drm_device *dev, unsigned long flags)
{
struct drm_nouveau_private *dev_priv;
@@ -497,10 +500,16 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
if (architecture >= 0x50) {
dev_priv->card_type = NV_50;
- } else if (architecture >= 0x44) {
- dev_priv->card_type = NV_44;
} else if (architecture >= 0x40) {
- dev_priv->card_type = NV_40;
+ uint8_t subarch = architecture & 0xf;
+ /* Selection criteria borrowed from NV40EXA */
+ if (NV40_CHIPSET_MASK & (1 << subarch)) {
+ dev_priv->card_type = NV_40;
+ } else if (NV44_CHIPSET_MASK & (1 << subarch)) {
+ dev_priv->card_type = NV_44;
+ } else {
+ dev_priv->card_type = NV_UNKNOWN;
+ }
} else if (architecture >= 0x30) {
dev_priv->card_type = NV_30;
} else if (architecture >= 0x20) {