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path: root/drivers/gpu/drm/nouveau/nv50_graph.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_graph.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_graph.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_graph.c b/drivers/gpu/drm/nouveau/nv50_graph.c
index ca79f32be44..6d504801b51 100644
--- a/drivers/gpu/drm/nouveau/nv50_graph.c
+++ b/drivers/gpu/drm/nouveau/nv50_graph.c
@@ -84,7 +84,7 @@ nv50_graph_init_regs__nv(struct drm_device *dev)
nv_wr32(dev, 0x400804, 0xc0000000);
nv_wr32(dev, 0x406800, 0xc0000000);
nv_wr32(dev, 0x400c04, 0xc0000000);
- nv_wr32(dev, 0x401804, 0xc0000000);
+ nv_wr32(dev, 0x401800, 0xc0000000);
nv_wr32(dev, 0x405018, 0xc0000000);
nv_wr32(dev, 0x402000, 0xc0000000);
@@ -165,6 +165,12 @@ nv50_graph_channel(struct drm_device *dev)
uint32_t inst;
int i;
+ /* Be sure we're not in the middle of a context switch or bad things
+ * will happen, such as unloading the wrong pgraph context.
+ */
+ if (!nv_wait(0x400300, 0x00000001, 0x00000000))
+ NV_ERROR(dev, "Ctxprog is still running\n");
+
inst = nv_rd32(dev, NV50_PGRAPH_CTXCTL_CUR);
if (!(inst & NV50_PGRAPH_CTXCTL_CUR_LOADED))
return NULL;
@@ -275,19 +281,18 @@ nv50_graph_load_context(struct nouveau_channel *chan)
int
nv50_graph_unload_context(struct drm_device *dev)
{
- uint32_t inst, fifo = nv_rd32(dev, 0x400500);
+ uint32_t inst;
inst = nv_rd32(dev, NV50_PGRAPH_CTXCTL_CUR);
if (!(inst & NV50_PGRAPH_CTXCTL_CUR_LOADED))
return 0;
inst &= NV50_PGRAPH_CTXCTL_CUR_INSTANCE;
- nv_wr32(dev, 0x400500, fifo & ~1);
+ nouveau_wait_for_idle(dev);
nv_wr32(dev, 0x400784, inst);
nv_wr32(dev, 0x400824, nv_rd32(dev, 0x400824) | 0x20);
nv_wr32(dev, 0x400304, nv_rd32(dev, 0x400304) | 0x01);
nouveau_wait_for_idle(dev);
- nv_wr32(dev, 0x400500, fifo);
nv_wr32(dev, NV50_PGRAPH_CTXCTL_CUR, inst);
return 0;