From 9b234db37825860b833ba110673301e2009f0546 Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Sun, 7 Jul 2013 10:45:43 +0200 Subject: [PATCH] drm/nouveau: add falcon interrupt handler This prevents 100% cpu usage on fermi cards when the exit interrupt from the secret scrubber is not acked. Signed-off-by: Maarten Lankhorst Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c | 1 + drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c | 1 + drivers/gpu/drm/nouveau/core/engine/falcon.c | 19 +++++++++++++++++++ drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c | 1 + drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c | 1 + drivers/gpu/drm/nouveau/core/engine/vp/nve0.c | 1 + drivers/gpu/drm/nouveau/core/include/engine/falcon.h | 2 ++ 7 files changed, 26 insertions(+) diff --git a/drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c index 262c9f5..ce860de 100644 --- a/drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c @@ -90,6 +90,7 @@ nvc0_bsp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret; nv_subdev(priv)->unit = 0x00008000; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nvc0_bsp_cclass; nv_engine(priv)->sclass = nvc0_bsp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c b/drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c index c46882c..ba6aeca 100644 --- a/drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c +++ b/drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c @@ -90,6 +90,7 @@ nve0_bsp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret; nv_subdev(priv)->unit = 0x00008000; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nve0_bsp_cclass; nv_engine(priv)->sclass = nve0_bsp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/engine/falcon.c b/drivers/gpu/drm/nouveau/core/engine/falcon.c index 3c7a31f..e03fc8e 100644 --- a/drivers/gpu/drm/nouveau/core/engine/falcon.c +++ b/drivers/gpu/drm/nouveau/core/engine/falcon.c @@ -23,6 +23,25 @@ #include #include +void +nouveau_falcon_intr(struct nouveau_subdev *subdev) +{ + struct nouveau_falcon *falcon = (void *)subdev; + u32 dispatch = nv_ro32(falcon, 0x01c); + u32 intr = nv_ro32(falcon, 0x008) & dispatch & ~(dispatch >> 16); + + if (intr & 0x00000010) { + nv_debug(falcon, "ucode halted\n"); + nv_wo32(falcon, 0x004, 0x00000010); + intr &= ~0x00000010; + } + + if (intr) { + nv_error(falcon, "unhandled intr 0x%08x\n", intr); + nv_wo32(falcon, 0x004, intr); + } +} + u32 _nouveau_falcon_rd32(struct nouveau_object *object, u64 addr) { diff --git a/drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c index 98072c1..73719aa 100644 --- a/drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c @@ -90,6 +90,7 @@ nvc0_ppp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret; nv_subdev(priv)->unit = 0x00000002; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nvc0_ppp_cclass; nv_engine(priv)->sclass = nvc0_ppp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c index 1879229..ac1f62a 100644 --- a/drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c @@ -90,6 +90,7 @@ nvc0_vp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret; nv_subdev(priv)->unit = 0x00020000; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nvc0_vp_cclass; nv_engine(priv)->sclass = nvc0_vp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/engine/vp/nve0.c b/drivers/gpu/drm/nouveau/core/engine/vp/nve0.c index d28ecbf..d4c3108 100644 --- a/drivers/gpu/drm/nouveau/core/engine/vp/nve0.c +++ b/drivers/gpu/drm/nouveau/core/engine/vp/nve0.c @@ -90,6 +90,7 @@ nve0_vp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret; nv_subdev(priv)->unit = 0x00020000; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nve0_vp_cclass; nv_engine(priv)->sclass = nve0_vp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/include/engine/falcon.h b/drivers/gpu/drm/nouveau/core/include/engine/falcon.h index 1edec38..181aa7d 100644 --- a/drivers/gpu/drm/nouveau/core/include/engine/falcon.h +++ b/drivers/gpu/drm/nouveau/core/include/engine/falcon.h @@ -72,6 +72,8 @@ int nouveau_falcon_create_(struct nouveau_object *, struct nouveau_object *, struct nouveau_oclass *, u32, bool, const char *, const char *, int, void **); +void nouveau_falcon_intr(struct nouveau_subdev *subdev); + #define _nouveau_falcon_dtor _nouveau_engine_dtor int _nouveau_falcon_init(struct nouveau_object *); int _nouveau_falcon_fini(struct nouveau_object *, bool); -- 2.7.4