1 /* SPDX-License-Identifier: MIT */
9 #include <linux/dma-fence.h>
21 	 * The sg mask of the pages sg_table. i.e the mask of
27 	 * The gtt page sizes we are allowed to use given the
29 	 * express the smallest unit we can use for the whole
31 	 * to use opportunistically.
37  * struct i915_vma_bindinfo - Information needed for async bind
42  * @pages: The pages sg-table.
43  * @page_sizes: Page sizes of the pages.
44  * @pages_rsgt: Refcounted sg-table when delayed object destruction
46  * @readonly: Whether the vma should be bound read-only.
50 	struct sg_table *pages;  member
58  * struct i915_vma_resource - Snapshotted unbind information.
72  * @vm: non-refcounted pointer to the vm. This is for internal use only and
82  * @guard: The size of guard area preceding and trailing the bind.
91  * take a wakeref in the dma-fence signalling critical path, it needs to be
95  * @tlb: pointer for obj->mm.tlb, if async unbind. Otherwise, NULL
129 	u32 guard;  member
157  * i915_vma_resource_get - Take a reference on a vma resource
165 	dma_fence_get(&vma_res->unbind_fence);  in i915_vma_resource_get()
170  * i915_vma_resource_put - Release a reference to a struct i915_vma_resource
175 	dma_fence_put(&vma_res->unbind_fence);  in i915_vma_resource_put()
179  * i915_vma_resource_init - Initialize a vma resource.
182  * @pages: The pages sg-table.
183  * @page_sizes: Page sizes of the pages.
186  * @readonly: Whether the vma should be bound read-only.
194  * @guard: The size of the guard area preceding and trailing the bind.
203 					  struct sg_table *pages,  in i915_vma_resource_init()  argument
214 					  u32 guard)  in i915_vma_resource_init()  argument
217 	vma_res->vm = vm;  in i915_vma_resource_init()
218 	vma_res->bi.pages = pages;  in i915_vma_resource_init()
219 	vma_res->bi.page_sizes = *page_sizes;  in i915_vma_resource_init()
221 		vma_res->bi.pages_rsgt = i915_refct_sgt_get(pages_rsgt);  in i915_vma_resource_init()
222 	vma_res->bi.readonly = readonly;  in i915_vma_resource_init()
223 	vma_res->bi.lmem = lmem;  in i915_vma_resource_init()
225 	vma_res->mr = mr;  in i915_vma_resource_init()
227 	vma_res->ops = ops;  in i915_vma_resource_init()
228 	vma_res->private = private;  in i915_vma_resource_init()
229 	vma_res->start = start;  in i915_vma_resource_init()
230 	vma_res->node_size = node_size;  in i915_vma_resource_init()
231 	vma_res->vma_size = size;  in i915_vma_resource_init()
232 	vma_res->guard = guard;  in i915_vma_resource_init()
237 	GEM_BUG_ON(refcount_read(&vma_res->hold_count) != 1);  in i915_vma_resource_fini()
238 	if (vma_res->bi.pages_rsgt)  in i915_vma_resource_fini()
239 		i915_refct_sgt_put(vma_res->bi.pages_rsgt);  in i915_vma_resource_fini()
240 	i915_sw_fence_fini(&vma_res->chain);  in i915_vma_resource_fini()