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authorBen Skeggs <bskeggs@redhat.com>2017-01-16 10:22:59 +1000
committerBen Skeggs <bskeggs@redhat.com>2017-02-17 17:38:10 +1000
commit17041c7eef2efb998b28f770442156401701cd3c (patch)
tree3546d19825ba38eecbf5adef06f79c6211125f39 /drivers/gpu
parent84cd0a55659ad7ab5792d5319b315e1e5bba312a (diff)
downloadlinux-17041c7eef2efb998b28f770442156401701cd3c.tar.bz2
drm/nouveau/core: add engine method to assist in determining chsw direction
FIFO gives us load/save/switch status, and we need to be able to determine which direction a "switch" is failing during channel recovery. In order to do this, we apparently need to query the engine itself. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/nouveau/include/nvkm/core/engine.h2
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/core/engine.c8
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/engine.h b/drivers/gpu/drm/nouveau/include/nvkm/core/engine.h
index 9ebfd8782366..d4cd2fbfde88 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/engine.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/engine.h
@@ -20,6 +20,7 @@ struct nvkm_engine_func {
int (*fini)(struct nvkm_engine *, bool suspend);
void (*intr)(struct nvkm_engine *);
void (*tile)(struct nvkm_engine *, int region, struct nvkm_fb_tile *);
+ bool (*chsw_load)(struct nvkm_engine *);
struct {
int (*sclass)(struct nvkm_oclass *, int index,
@@ -44,4 +45,5 @@ int nvkm_engine_new_(const struct nvkm_engine_func *, struct nvkm_device *,
struct nvkm_engine *nvkm_engine_ref(struct nvkm_engine *);
void nvkm_engine_unref(struct nvkm_engine **);
void nvkm_engine_tile(struct nvkm_engine *, int region);
+bool nvkm_engine_chsw_load(struct nvkm_engine *);
#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/engine.c b/drivers/gpu/drm/nouveau/nvkm/core/engine.c
index ee8e5831fe37..b6c916954a10 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/engine.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/engine.c
@@ -27,6 +27,14 @@
#include <subdev/fb.h>
+bool
+nvkm_engine_chsw_load(struct nvkm_engine *engine)
+{
+ if (engine->func->chsw_load)
+ return engine->func->chsw_load(engine);
+ return false;
+}
+
void
nvkm_engine_unref(struct nvkm_engine **pengine)
{