diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 12d32579b95..6291dcdf5d4 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2165,23 +2165,29 @@ i915_gem_object_unbind(struct drm_i915_gem_object *obj) return -EINVAL; } + ret = i915_gem_object_finish_gpu(obj); + if (ret == -ERESTARTSYS) + return ret; + /* Continue on if we fail due to EIO, the GPU is hung so we + * should be safe and we need to cleanup or else we might + * cause memory corruption through use-after-free. + */ + /* blow away mappings if mapped through GTT */ i915_gem_release_mmap(obj); /* Move the object to the CPU domain to ensure that * any possible CPU writes while it's not in the GTT - * are flushed when we go to remap it. This will - * also ensure that all pending GPU writes are finished - * before we unbind. + * are flushed when we go to remap it. */ - ret = i915_gem_object_set_to_cpu_domain(obj, 1); + if (ret == 0) + ret = i915_gem_object_set_to_cpu_domain(obj, 1); if (ret == -ERESTARTSYS) return ret; - /* Continue on if we fail due to EIO, the GPU is hung so we - * should be safe and we need to cleanup or else we might - * cause memory corruption through use-after-free. - */ if (ret) { + /* In the event of a disaster, abandon all caches and + * hope for the best. + */ i915_gem_clflush_object(obj); obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU; } @@ -3045,11 +3051,11 @@ i915_gem_object_set_to_display_plane(struct drm_i915_gem_object *obj, } int -i915_gem_object_flush_gpu(struct drm_i915_gem_object *obj) +i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj) { int ret; - if (!obj->active) + if ((obj->base.read_domains & I915_GEM_GPU_DOMAINS) == 0) return 0; if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) { @@ -3058,6 +3064,9 @@ i915_gem_object_flush_gpu(struct drm_i915_gem_object *obj) return ret; } + /* Ensure that we invalidate the GPU's caches and TLBs. */ + obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS; + return i915_gem_object_wait_rendering(obj); } |