From 66adbfb00d55996079661d11ff9b6064b925b44e Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 30 May 2016 08:39:27 +1000 Subject: [PATCH] drm/nouveau/mc: support for temporarily masking interrupts from a specific device Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/include/nvkm/subdev/mc.h | 1 + drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c | 15 +++++++++++++++ drivers/gpu/drm/nouveau/nvkm/subdev/mc/priv.h | 2 ++ 3 files changed, 18 insertions(+) diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/mc.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/mc.h index c5f12352c0eb..81435d5a4adf 100644 --- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/mc.h +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/mc.h @@ -13,6 +13,7 @@ void nvkm_mc_reset(struct nvkm_device *, enum nvkm_devidx); void nvkm_mc_intr(struct nvkm_device *, bool *handled); void nvkm_mc_intr_unarm(struct nvkm_device *); void nvkm_mc_intr_rearm(struct nvkm_device *); +void nvkm_mc_intr_mask(struct nvkm_device *, enum nvkm_devidx, bool enable); void nvkm_mc_unk260(struct nvkm_device *, u32 data); int nv04_mc_new(struct nvkm_device *, int, struct nvkm_mc **); diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c index 6f10638ab9e4..6b25e25f9eba 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c @@ -34,6 +34,21 @@ nvkm_mc_unk260(struct nvkm_device *device, u32 data) mc->func->unk260(mc, data); } +void +nvkm_mc_intr_mask(struct nvkm_device *device, enum nvkm_devidx devidx, bool en) +{ + struct nvkm_mc *mc = device->mc; + const struct nvkm_mc_map *map; + if (likely(mc) && mc->func->intr_mask) { + u32 mask = nvkm_top_intr_mask(device, devidx); + for (map = mc->func->intr; !mask && map->stat; map++) { + if (map->unit == devidx) + mask = map->stat; + } + mc->func->intr_mask(mc, mask, en ? mask : 0); + } +} + void nvkm_mc_intr_unarm(struct nvkm_device *device) { diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/priv.h index 0229c7e01729..fb4ce6df50f4 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mc/priv.h +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mc/priv.h @@ -21,6 +21,8 @@ struct nvkm_mc_func { void (*intr_unarm)(struct nvkm_mc *); /* enable reporting of interrupts to host */ void (*intr_rearm)(struct nvkm_mc *); + /* (un)mask delivery of specific interrupts */ + void (*intr_mask)(struct nvkm_mc *, u32 mask, u32 stat); /* retrieve pending interrupt mask (NV_PMC_INTR) */ u32 (*intr_stat)(struct nvkm_mc *); const struct nvkm_mc_map *reset; -- 2.20.1