From 841cd7737557785c0f215b0984c06aaaaa882302 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 6 Aug 2014 15:04:48 +0200 Subject: drm/i915: Only refcount ppgtt if it actually is one This essentially unbreaks non-ppgtt operation where we'd scribble over random memory. While at it give the vm_to_ppgtt function a proper prefix and make it a bit more paranoid. Reviewed-by: Michel Thierry Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 10 +++++++++- drivers/gpu/drm/i915/i915_gem.c | 3 ++- drivers/gpu/drm/i915/i915_gem_gtt.c | 3 ++- 3 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 101fc637eb46..454badf31dfd 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2512,6 +2512,15 @@ static inline bool i915_is_ggtt(struct i915_address_space *vm) return vm == ggtt; } +static inline struct i915_hw_ppgtt * +i915_vm_to_ppgtt(struct i915_address_space *vm) +{ + WARN_ON(i915_is_ggtt(vm)); + + return container_of(vm, struct i915_hw_ppgtt, base); +} + + static inline bool i915_gem_obj_ggtt_bound(struct drm_i915_gem_object *obj) { return i915_gem_obj_bound(obj, obj_to_ggtt(obj)); @@ -2547,7 +2556,6 @@ void i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj); /* i915_gem_context.c */ #define ctx_to_ppgtt(ctx) container_of((ctx)->vm, struct i915_hw_ppgtt, base) -#define vm_to_ppgtt(vm) container_of(vm, struct i915_hw_ppgtt, base) int __must_check i915_gem_context_init(struct drm_device *dev); void i915_gem_context_fini(struct drm_device *dev); void i915_gem_context_reset(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 8061d45eaa80..e3e30cd474be 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -4485,7 +4485,8 @@ void i915_gem_vma_destroy(struct i915_vma *vma) vm = vma->vm; - i915_ppgtt_put(vm_to_ppgtt(vm)); + if (!i915_is_ggtt(vm)) + i915_ppgtt_put(i915_vm_to_ppgtt(vm)); list_del(&vma->vma_link); diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index a5715faba65f..48d8f4a21c3f 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -2187,7 +2187,8 @@ i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj, if (!vma) vma = __i915_gem_vma_create(obj, vm); - i915_ppgtt_get(vm_to_ppgtt(vm)); + if (!i915_is_ggtt(vm)) + i915_ppgtt_get(i915_vm_to_ppgtt(vm)); return vma; } -- cgit v1.2.1