drm/nv50: implement possible workaround for NV86 PGRAPH TLB flush hang
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 60a54fa..10a8d4e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -307,6 +307,7 @@
void (*destroy_context)(struct nouveau_channel *);
int (*load_context)(struct nouveau_channel *);
int (*unload_context)(struct drm_device *);
+ void (*tlb_flush)(struct drm_device *dev);
};
struct nouveau_pgraph_object_method {
@@ -339,6 +340,7 @@
void (*destroy_context)(struct nouveau_channel *);
int (*load_context)(struct nouveau_channel *);
int (*unload_context)(struct drm_device *);
+ void (*tlb_flush)(struct drm_device *dev);
void (*set_region_tiling)(struct drm_device *dev, int i, uint32_t addr,
uint32_t size, uint32_t pitch);
@@ -1014,6 +1016,7 @@
extern void nv50_fifo_destroy_context(struct nouveau_channel *);
extern int nv50_fifo_load_context(struct nouveau_channel *);
extern int nv50_fifo_unload_context(struct drm_device *);
+extern void nv50_fifo_tlb_flush(struct drm_device *dev);
/* nvc0_fifo.c */
extern int nvc0_fifo_init(struct drm_device *);
@@ -1091,6 +1094,8 @@
extern int nv50_graph_unload_context(struct drm_device *);
extern void nv50_graph_context_switch(struct drm_device *);
extern int nv50_grctx_init(struct nouveau_grctx *);
+extern void nv50_graph_tlb_flush(struct drm_device *dev);
+extern void nv86_graph_tlb_flush(struct drm_device *dev);
/* nvc0_graph.c */
extern int nvc0_graph_init(struct drm_device *);