On 2016å¹´12æ??16æ?¥ 01:10, Nicolai Hähnle wrote:
> From: Nicolai Hähnle <nicolai.haehnle at amd.com>
>
> Ensure that the driver can listen to evictions even when they don't take the
> path through ttm_bo_driver::move.
>
> This is crucial for amdgpu, which relies on an eviction counter to skip
> re-binding page tables when possible.
>
> Signed-off-by: Nicolai Hähnle <nicolai.haehnle at amd.com>
Acked-by: Chunming Zhou <david1.zhou at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 3 ++-
> drivers/gpu/drm/nouveau/nouveau_bo.c | 3 ++-
> drivers/gpu/drm/qxl/qxl_ttm.c | 1 +
> drivers/gpu/drm/radeon/radeon_object.c | 1 +
> drivers/gpu/drm/radeon/radeon_object.h | 1 +
> drivers/gpu/drm/ttm/ttm_bo.c | 8 ++++----
> drivers/gpu/drm/virtio/virtgpu_ttm.c | 1 +
> drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c | 1 +
> include/drm/ttm/ttm_bo_driver.h | 10 ++++++++--
> 10 files changed, 22 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index bf79b73..c29db99 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -842,20 +842,21 @@ int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
>
> if (metadata_size)
> *metadata_size = bo->metadata_size;
> if (flags)
> *flags = bo->metadata_flags;
>
> return 0;
> }
>
> void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
> + bool evict,
> struct ttm_mem_reg *new_mem)
> {
> struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
> struct amdgpu_bo *abo;
> struct ttm_mem_reg *old_mem = &bo->mem;
>
> if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
> return;
>
> abo = container_of(bo, struct amdgpu_bo, tbo);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> index 5cbf59e..4306b2f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
> @@ -148,21 +148,22 @@ void amdgpu_bo_fini(struct amdgpu_device *adev);
> int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
> struct vm_area_struct *vma);
> int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags);
> void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags);
> int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
> uint32_t metadata_size, uint64_t flags);
> int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
> size_t buffer_size, uint32_t *metadata_size,
> uint64_t *flags);
> void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
> - struct ttm_mem_reg *new_mem);
> + bool evict,
> + struct ttm_mem_reg *new_mem);
> int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
> void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
> bool shared);
> u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo);
> int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
> struct amdgpu_ring *ring,
> struct amdgpu_bo *bo,
> struct reservation_object *resv,
> struct dma_fence **fence, bool direct);
> int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
> index e0c0007..6fa1521 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> @@ -1187,21 +1187,22 @@ nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
> ret = nouveau_bo_move_m2mf(bo, true, intr, no_wait_gpu, new_mem);
> if (ret)
> goto out;
>
> out:
> ttm_bo_mem_put(bo, &tmp_mem);
> return ret;
> }
>
> static void
> -nouveau_bo_move_ntfy(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem)
> +nouveau_bo_move_ntfy(struct ttm_buffer_object *bo, bool evict,
> + struct ttm_mem_reg *new_mem)
> {
> struct nouveau_bo *nvbo = nouveau_bo(bo);
> struct nvkm_vma *vma;
>
> /* ttm can now (stupidly) pass the driver bos it didn't create... */
> if (bo->destroy != nouveau_bo_del_ttm)
> return;
>
> list_for_each_entry(vma, &nvbo->vma_list, head) {
> if (new_mem && new_mem->mem_type != TTM_PL_SYSTEM &&
> diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c
> index 1176133..f3939a9 100644
> --- a/drivers/gpu/drm/qxl/qxl_ttm.c
> +++ b/drivers/gpu/drm/qxl/qxl_ttm.c
> @@ -360,20 +360,21 @@ static int qxl_bo_move(struct ttm_buffer_object *bo,
>
> if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
> qxl_move_null(bo, new_mem);
> return 0;
> }
> return ttm_bo_move_memcpy(bo, interruptible, no_wait_gpu,
> new_mem);
> }
>
> static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
> + bool evict,
> struct ttm_mem_reg *new_mem)
> {
> struct qxl_bo *qbo;
> struct qxl_device *qdev;
>
> if (!qxl_ttm_bo_is_qxl_bo(bo))
> return;
> qbo = to_qxl_bo(bo);
> qdev = qbo->gem_base.dev->dev_private;
>
> diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
> index 41b72ce..74b2760 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.c
> +++ b/drivers/gpu/drm/radeon/radeon_object.c
> @@ -758,20 +758,21 @@ int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
> return 0;
> }
>
> if ((bo->surface_reg >= 0) && !has_moved)
> return 0;
>
> return radeon_bo_get_surface_reg(bo);
> }
>
> void radeon_bo_move_notify(struct ttm_buffer_object *bo,
> + bool evict,
> struct ttm_mem_reg *new_mem)
> {
> struct radeon_bo *rbo;
>
> if (!radeon_ttm_bo_is_radeon_bo(bo))
> return;
>
> rbo = container_of(bo, struct radeon_bo, tbo);
> radeon_bo_check_tiling(rbo, 0, 1);
> radeon_vm_bo_invalidate(rbo->rdev, rbo);
> diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
> index a10bb3d..9ffd821 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.h
> +++ b/drivers/gpu/drm/radeon/radeon_object.h
> @@ -143,20 +143,21 @@ extern void radeon_bo_fini(struct radeon_device *rdev);
> extern int radeon_bo_list_validate(struct radeon_device *rdev,
> struct ww_acquire_ctx *ticket,
> struct list_head *head, int ring);
> extern int radeon_bo_set_tiling_flags(struct radeon_bo *bo,
> u32 tiling_flags, u32 pitch);
> extern void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
> u32 *tiling_flags, u32 *pitch);
> extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
> bool force_drop);
> extern void radeon_bo_move_notify(struct ttm_buffer_object *bo,
> + bool evict,
> struct ttm_mem_reg *new_mem);
> extern int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
> extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);
> extern void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,
> bool shared);
>
> /*
> * sub allocation
> */
>
> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> index d506361..d4973e9c 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> @@ -335,45 +335,45 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
> goto out_err;
>
> if (mem->mem_type != TTM_PL_SYSTEM) {
> ret = ttm_tt_bind(bo->ttm, mem);
> if (ret)
> goto out_err;
> }
>
> if (bo->mem.mem_type == TTM_PL_SYSTEM) {
> if (bdev->driver->move_notify)
> - bdev->driver->move_notify(bo, mem);
> + bdev->driver->move_notify(bo, evict, mem);
> bo->mem = *mem;
> mem->mm_node = NULL;
> goto moved;
> }
> }
>
> if (bdev->driver->move_notify)
> - bdev->driver->move_notify(bo, mem);
> + bdev->driver->move_notify(bo, evict, mem);
>
> if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) &&
> !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED))
> ret = ttm_bo_move_ttm(bo, interruptible, no_wait_gpu, mem);
> else if (bdev->driver->move)
> ret = bdev->driver->move(bo, evict, interruptible,
> no_wait_gpu, mem);
> else
> ret = ttm_bo_move_memcpy(bo, interruptible, no_wait_gpu, mem);
>
> if (ret) {
> if (bdev->driver->move_notify) {
> struct ttm_mem_reg tmp_mem = *mem;
> *mem = bo->mem;
> bo->mem = tmp_mem;
> - bdev->driver->move_notify(bo, mem);
> + bdev->driver->move_notify(bo, false, mem);
> bo->mem = *mem;
> *mem = tmp_mem;
> }
>
> goto out_err;
> }
>
> moved:
> if (bo->evicted) {
> if (bdev->driver->invalidate_caches) {
> @@ -407,21 +407,21 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
> * Call bo::reserved.
> * Will release GPU memory type usage on destruction.
> * This is the place to put in driver specific hooks to release
> * driver private resources.
> * Will release the bo::reserved lock.
> */
>
> static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo)
> {
> if (bo->bdev->driver->move_notify)
> - bo->bdev->driver->move_notify(bo, NULL);
> + bo->bdev->driver->move_notify(bo, false, NULL);
>
> ttm_tt_destroy(bo->ttm);
> bo->ttm = NULL;
> ttm_bo_mem_put(bo, &bo->mem);
>
> ww_mutex_unlock (&bo->resv->lock);
> }
>
> static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo)
> {
> diff --git a/drivers/gpu/drm/virtio/virtgpu_ttm.c b/drivers/gpu/drm/virtio/virtgpu_ttm.c
> index 4a1de9f..10387d7 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_ttm.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_ttm.c
> @@ -379,20 +379,21 @@ static int virtio_gpu_bo_move(struct ttm_buffer_object *bo,
>
> ret = ttm_bo_wait(bo, interruptible, no_wait_gpu);
> if (ret)
> return ret;
>
> virtio_gpu_move_null(bo, new_mem);
> return 0;
> }
>
> static void virtio_gpu_bo_move_notify(struct ttm_buffer_object *tbo,
> + bool evict,
> struct ttm_mem_reg *new_mem)
> {
> struct virtio_gpu_object *bo;
> struct virtio_gpu_device *vgdev;
>
> bo = container_of(tbo, struct virtio_gpu_object, tbo);
> vgdev = (struct virtio_gpu_device *)bo->gem_base.dev->dev_private;
>
> if (!new_mem || (new_mem->placement & TTM_PL_FLAG_SYSTEM)) {
> if (bo->hw_res_handle)
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
> index c894a48..caa279b 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
> @@ -818,20 +818,21 @@ static int vmw_ttm_fault_reserve_notify(struct ttm_buffer_object *bo)
> * vmw_move_notify - TTM move_notify_callback
> *
> * @bo: The TTM buffer object about to move.
> * @mem: The struct ttm_mem_reg indicating to what memory
> * region the move is taking place.
> *
> * Calls move_notify for all subsystems needing it.
> * (currently only resources).
> */
> static void vmw_move_notify(struct ttm_buffer_object *bo,
> + bool evict,
> struct ttm_mem_reg *mem)
> {
> vmw_resource_move_notify(bo, mem);
> vmw_query_move_notify(bo, mem);
> }
>
>
> /**
> * vmw_swap_notify - TTM move_notify_callback
> *
> diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
> index cdbdb40..8b4bec7 100644
> --- a/include/drm/ttm/ttm_bo_driver.h
> +++ b/include/drm/ttm/ttm_bo_driver.h
> @@ -424,23 +424,29 @@ struct ttm_bo_driver {
> *
> * Called from the map / write / read methods to verify that the
> * caller is permitted to access the buffer object.
> * This member may be set to NULL, which will refuse this kind of
> * access for all buffer objects.
> * This function should return 0 if access is granted, -EPERM otherwise.
> */
> int (*verify_access)(struct ttm_buffer_object *bo,
> struct file *filp);
>
> - /* hook to notify driver about a driver move so it
> - * can do tiling things */
> + /**
> + * Hook to notify driver about a driver move so it
> + * can do tiling things and book-keeping.
> + *
> + * @evict: whether this move is evicting the buffer from the graphics
> + * address space
> + */
> void (*move_notify)(struct ttm_buffer_object *bo,
> + bool evict,
> struct ttm_mem_reg *new_mem);
> /* notify the driver we are taking a fault on this BO
> * and have reserved it */
> int (*fault_reserve_notify)(struct ttm_buffer_object *bo);
>
> /**
> * notify the driver that we're about to swap out this bo
> */
> void (*swap_notify)(struct ttm_buffer_object *bo);
>
