i915/gt/intel_gtt.c

41 struct drm_i915_gem_object *alloc_pt_lmem(struct i915_address_space *vm, int sz)
57 	obj = __i915_gem_object_create_lmem_with_ps(vm->i915, sz, sz,
58 						    vm->lmem_pt_obj_flags);
60 	 * Ensure all paging structures for this vm share the same dma-resv
65 		obj->base.resv = i915_vm_resv_get(vm);
66 		obj->shares_resv_from = vm;
68 		if (vm->fpriv)
69 			i915_drm_client_add_object(vm->fpriv->client, obj);
75 struct drm_i915_gem_object *alloc_pt_dma(struct i915_address_space *vm, int sz)
79 	if (I915_SELFTEST_ONLY(should_fail(&vm->fault_attr, 1)))
80 		i915_gem_shrink_all(vm->i915);
82 	obj = i915_gem_object_create_internal(vm->i915, sz);
84 	 * Ensure all paging structures for this vm share the same dma-resv
89 		obj->base.resv = i915_vm_resv_get(vm);
90 		obj->shares_resv_from = vm;
92 		if (vm->fpriv)
93 			i915_drm_client_add_object(vm->fpriv->client, obj);
99 int map_pt_dma(struct i915_address_space *vm, struct drm_i915_gem_object *obj)
104 	type = intel_gt_coherent_map_type(vm->gt, obj, true);
112 	if (IS_METEORLAKE(vm->i915))
123 int map_pt_dma_locked(struct i915_address_space *vm, struct drm_i915_gem_object *obj)
128 	type = intel_gt_coherent_map_type(vm->gt, obj, true);
136 	if (IS_METEORLAKE(vm->i915))
170 			 * Delay the vm and vm mutex freeing until the
173 			i915_vm_resv_get(vma->vm);
183 static void __i915_vm_close(struct i915_address_space *vm)
185 	mutex_lock(&vm->mutex);
187 	clear_vm_list(&vm->bound_list);
188 	clear_vm_list(&vm->unbound_list);
191 	GEM_BUG_ON(!list_empty(&vm->bound_list));
192 	GEM_BUG_ON(!list_empty(&vm->unbound_list));
194 	mutex_unlock(&vm->mutex);
197 /* lock the vm into the current ww, if we lock one, we lock all */
198 int i915_vm_lock_objects(struct i915_address_space *vm,
201 	if (vm->scratch[0]->base.resv == &vm->_resv) {
202 		return i915_gem_object_lock(vm->scratch[0], ww);
204 		struct i915_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
211 void i915_address_space_fini(struct i915_address_space *vm)
213 	drm_mm_takedown(&vm->mm);
226 	struct i915_address_space *vm =
227 		container_of(kref, typeof(*vm), resv_ref);
229 	dma_resv_fini(&vm->_resv);
230 	mutex_destroy(&vm->mutex);
232 	kfree(vm);
237 	struct i915_address_space *vm =
240 	__i915_vm_close(vm);
243 	i915_vma_resource_bind_dep_sync_all(vm);
245 	vm->cleanup(vm);
246 	i915_address_space_fini(vm);
248 	i915_vm_resv_put(vm);
253 	struct i915_address_space *vm =
256 	GEM_BUG_ON(i915_is_ggtt(vm));
257 	trace_i915_ppgtt_release(vm);
259 	queue_work(vm->i915->wq, &vm->release_work);
262 void i915_address_space_init(struct i915_address_space *vm, int subclass)
264 	kref_init(&vm->ref);
270 	if (!kref_read(&vm->resv_ref))
271 		kref_init(&vm->resv_ref);
273 	vm->pending_unbind = RB_ROOT_CACHED;
274 	INIT_WORK(&vm->release_work, __i915_vm_release);
277 	 * The vm->mutex must be reclaim safe (for use in the shrinker).
281 	mutex_init(&vm->mutex);
282 	lockdep_set_subclass(&vm->mutex, subclass);
284 	if (!intel_vm_no_concurrent_access_wa(vm->i915)) {
285 		i915_gem_shrinker_taints_mutex(vm->i915, &vm->mutex);
289 		 * which is allowed to allocate memory. This means &vm->mutex
295 		mutex_acquire(&vm->mutex.dep_map, 0, 0, _THIS_IP_);
297 		mutex_release(&vm->mutex.dep_map, _THIS_IP_);
299 	dma_resv_init(&vm->_resv);
301 	GEM_BUG_ON(!vm->total);
302 	drm_mm_init(&vm->mm, 0, vm->total);
304 	memset64(vm->min_alignment, I915_GTT_MIN_ALIGNMENT,
305 		 ARRAY_SIZE(vm->min_alignment));
307 	if (HAS_64K_PAGES(vm->i915)) {
308 		vm->min_alignment[INTEL_MEMORY_LOCAL] = I915_GTT_PAGE_SIZE_64K;
309 		vm->min_alignment[INTEL_MEMORY_STOLEN_LOCAL] = I915_GTT_PAGE_SIZE_64K;
312 	vm->mm.head_node.color = I915_COLOR_UNEVICTABLE;
314 	INIT_LIST_HEAD(&vm->bound_list);
315 	INIT_LIST_HEAD(&vm->unbound_list);
360 int setup_scratch_page(struct i915_address_space *vm)
372 	 * scratch (read-only) between all vm, we create one 64k scratch page
376 	if (i915_vm_is_4lvl(vm) &&
377 	    HAS_PAGE_SIZES(vm->i915, I915_GTT_PAGE_SIZE_64K) &&
378 	    !HAS_64K_PAGES(vm->i915))
384 		obj = vm->alloc_scratch_dma(vm, size);
388 		if (map_pt_dma(vm, obj))
410 		vm->scratch[0] = obj;
411 		vm->scratch_order = get_order(size);
424 void free_scratch(struct i915_address_space *vm)
428 	if (!vm->scratch[0])
431 	for (i = 0; i <= vm->top; i++)
432 		i915_gem_object_put(vm->scratch[i]);
696 __vm_create_scratch_for_read(struct i915_address_space *vm, unsigned long size)
701 	obj = i915_gem_object_create_internal(vm->i915, PAGE_ALIGN(size));
707 	vma = i915_vma_instance(obj, vm, NULL);
717 __vm_create_scratch_for_read_pinned(struct i915_address_space *vm, unsigned long size)
722 	vma = __vm_create_scratch_for_read(vm, size);