From 17041c7eef2efb998b28f770442156401701cd3c Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 16 Jan 2017 10:22:59 +1000 Subject: [PATCH] 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 --- drivers/gpu/drm/nouveau/include/nvkm/core/engine.h | 2 ++ drivers/gpu/drm/nouveau/nvkm/core/engine.c | 8 ++++++++ 2 files changed, 10 insertions(+) diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/engine.h b/drivers/gpu/drm/nouveau/include/nvkm/core/engine.h index 9ebfd87..d4cd2fb 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 ee8e583..b6c9169 100644 --- a/drivers/gpu/drm/nouveau/nvkm/core/engine.c +++ b/drivers/gpu/drm/nouveau/nvkm/core/engine.c @@ -27,6 +27,14 @@ #include +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) { -- 2.7.4