On Mon, Mar 21, 2022 at 02:58:55PM +0100, Christian König wrote:
> That should now be handled by the common dma_resv framework.
>
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
> Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
> drivers/gpu/drm/i915/gem/i915_gem_object.c | 29 ++++++--------------
> drivers/gpu/drm/i915/gem/i915_gem_object.h | 5 ++--
> drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 15 +---------
> drivers/gpu/drm/i915/i915_vma.c | 9 +++++-
> 4 files changed, 19 insertions(+), 39 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
> index d87b508b59b1..fd240435ffef 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
> @@ -742,18 +742,19 @@ static const struct drm_gem_object_funcs i915_gem_object_funcs = {
> /**
> * i915_gem_object_get_moving_fence - Get the object's moving fence if any
> * @obj: The object whose moving fence to get.
> + * @fence: The resulting fence
> *
> * A non-signaled moving fence means that there is an async operation
> * pending on the object that needs to be waited on before setting up
> * any GPU- or CPU PTEs to the object's pages.
> *
> - * Return: A refcounted pointer to the object's moving fence if any,
> - * NULL otherwise.
> + * Return: Negative error code or 0 for success.
> */
> -struct dma_fence *
> -i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj)
> +int i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj,
> + struct dma_fence **fence)
> {
> - return dma_fence_get(i915_gem_to_ttm(obj)->moving);
> + return dma_resv_get_singleton(obj->base.resv, DMA_RESV_USAGE_KERNEL,
> + fence);
> }
>
> /**
> @@ -771,23 +772,9 @@ i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj)
> int i915_gem_object_wait_moving_fence(struct drm_i915_gem_object *obj,
> bool intr)
> {
> - struct dma_fence *fence = i915_gem_to_ttm(obj)->moving;
> - int ret;
> -
> assert_object_held(obj);
> - if (!fence)
> - return 0;
> -
> - ret = dma_fence_wait(fence, intr);
> - if (ret)
> - return ret;
> -
> - if (fence->error)
> - return fence->error;
> -
> - i915_gem_to_ttm(obj)->moving = NULL;
> - dma_fence_put(fence);
> - return 0;
> + return dma_resv_wait_timeout(obj->base. resv, DMA_RESV_USAGE_KERNEL,
> + intr, MAX_SCHEDULE_TIMEOUT);
> }
>
> #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
> index f66d46882ea7..be57af8bfb31 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
> @@ -521,9 +521,8 @@ i915_gem_object_finish_access(struct drm_i915_gem_object *obj)
> i915_gem_object_unpin_pages(obj);
> }
>
> -struct dma_fence *
> -i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj);
> -
> +int i915_gem_object_get_moving_fence(struct drm_i915_gem_object *obj,
> + struct dma_fence **fence);
> int i915_gem_object_wait_moving_fence(struct drm_i915_gem_object *obj,
> bool intr);
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> index e4a232e22f9d..4d5d0cd64f23 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
> @@ -452,19 +452,6 @@ __i915_ttm_move(struct ttm_buffer_object *bo,
> return fence;
> }
>
> -static int
> -prev_deps(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx,
> - struct i915_deps *deps)
> -{
> - int ret;
> -
> - ret = i915_deps_add_dependency(deps, bo->moving, ctx);
> - if (!ret)
> - ret = i915_deps_add_resv(deps, bo->base.resv, ctx);
> -
> - return ret;
> -}
> -
> /**
> * i915_ttm_move - The TTM move callback used by i915.
> * @bo: The buffer object.
> @@ -519,7 +506,7 @@ int i915_ttm_move(struct ttm_buffer_object *bo, bool evict,
> struct i915_deps deps;
>
> i915_deps_init(&deps, GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN);
> - ret = prev_deps(bo, ctx, &deps);
> + ret = i915_deps_add_resv(&deps, bo->base.resv, ctx);
> if (ret) {
> i915_refct_sgt_put(dst_rsgt);
> return ret;
> diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
> index 52fd6705a518..8737159f4706 100644
> --- a/drivers/gpu/drm/i915/i915_vma.c
> +++ b/drivers/gpu/drm/i915/i915_vma.c
> @@ -1247,10 +1247,17 @@ int i915_vma_pin_ww(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
> if (err)
> return err;
>
> + if (vma->obj) {
> + err = i915_gem_object_get_moving_fence(vma->obj, &moving);
> + if (err)
> + return err;
> + } else {
> + moving = NULL;
> + }
> +
> if (flags & PIN_GLOBAL)
> wakeref = intel_runtime_pm_get(&vma->vm->i915->runtime_pm);
>
> - moving = vma->obj ? i915_gem_object_get_moving_fence(vma->obj) : NULL;
> if (flags & vma->vm->bind_async_flags || moving) {
> /* lock VM */
> err = i915_vm_lock_objects(vma->vm, ww);
> --
> 2.25.1
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
