| /* |
| * Copyright © 2016 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| * |
| */ |
| |
| #include "../i915_selftest.h" |
| |
| #include "mock_gem_device.h" |
| |
| static int populate_ggtt(struct drm_i915_private *i915) |
| { |
| struct drm_i915_gem_object *obj; |
| u64 size; |
| |
| for (size = 0; |
| size + I915_GTT_PAGE_SIZE <= i915->ggtt.base.total; |
| size += I915_GTT_PAGE_SIZE) { |
| struct i915_vma *vma; |
| |
| obj = i915_gem_object_create_internal(i915, I915_GTT_PAGE_SIZE); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0); |
| if (IS_ERR(vma)) |
| return PTR_ERR(vma); |
| } |
| |
| if (!list_empty(&i915->mm.unbound_list)) { |
| size = 0; |
| list_for_each_entry(obj, &i915->mm.unbound_list, global_link) |
| size++; |
| |
| pr_err("Found %lld objects unbound!\n", size); |
| return -EINVAL; |
| } |
| |
| if (list_empty(&i915->ggtt.base.inactive_list)) { |
| pr_err("No objects on the GGTT inactive list!\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static void unpin_ggtt(struct drm_i915_private *i915) |
| { |
| struct i915_vma *vma; |
| |
| list_for_each_entry(vma, &i915->ggtt.base.inactive_list, vm_link) |
| i915_vma_unpin(vma); |
| } |
| |
| static void cleanup_objects(struct drm_i915_private *i915) |
| { |
| struct drm_i915_gem_object *obj, *on; |
| |
| list_for_each_entry_safe(obj, on, &i915->mm.unbound_list, global_link) |
| i915_gem_object_put(obj); |
| |
| list_for_each_entry_safe(obj, on, &i915->mm.bound_list, global_link) |
| i915_gem_object_put(obj); |
| |
| mutex_unlock(&i915->drm.struct_mutex); |
| |
| i915_gem_drain_freed_objects(i915); |
| |
| mutex_lock(&i915->drm.struct_mutex); |
| } |
| |
| static int igt_evict_something(void *arg) |
| { |
| struct drm_i915_private *i915 = arg; |
| struct i915_ggtt *ggtt = &i915->ggtt; |
| int err; |
| |
| /* Fill the GGTT with pinned objects and try to evict one. */ |
| |
| err = populate_ggtt(i915); |
| if (err) |
| goto cleanup; |
| |
| /* Everything is pinned, nothing should happen */ |
| err = i915_gem_evict_something(&ggtt->base, |
| I915_GTT_PAGE_SIZE, 0, 0, |
| 0, U64_MAX, |
| 0); |
| if (err != -ENOSPC) { |
| pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n", |
| err); |
| goto cleanup; |
| } |
| |
| unpin_ggtt(i915); |
| |
| /* Everything is unpinned, we should be able to evict something */ |
| err = i915_gem_evict_something(&ggtt->base, |
| I915_GTT_PAGE_SIZE, 0, 0, |
| 0, U64_MAX, |
| 0); |
| if (err) { |
| pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n", |
| err); |
| goto cleanup; |
| } |
| |
| cleanup: |
| cleanup_objects(i915); |
| return err; |
| } |
| |
| static int igt_overcommit(void *arg) |
| { |
| struct drm_i915_private *i915 = arg; |
| struct drm_i915_gem_object *obj; |
| struct i915_vma *vma; |
| int err; |
| |
| /* Fill the GGTT with pinned objects and then try to pin one more. |
| * We expect it to fail. |
| */ |
| |
| err = populate_ggtt(i915); |
| if (err) |
| goto cleanup; |
| |
| obj = i915_gem_object_create_internal(i915, I915_GTT_PAGE_SIZE); |
| if (IS_ERR(obj)) { |
| err = PTR_ERR(obj); |
| goto cleanup; |
| } |
| |
| list_move(&obj->global_link, &i915->mm.unbound_list); |
| |
| vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0); |
| if (!IS_ERR(vma) || PTR_ERR(vma) != -ENOSPC) { |
| pr_err("Failed to evict+insert, i915_gem_object_ggtt_pin returned err=%d\n", (int)PTR_ERR(vma)); |
| err = -EINVAL; |
| goto cleanup; |
| } |
| |
| cleanup: |
| cleanup_objects(i915); |
| return err; |
| } |
| |
| static int igt_evict_for_vma(void *arg) |
| { |
| struct drm_i915_private *i915 = arg; |
| struct i915_ggtt *ggtt = &i915->ggtt; |
| struct drm_mm_node target = { |
| .start = 0, |
| .size = 4096, |
| }; |
| int err; |
| |
| /* Fill the GGTT with pinned objects and try to evict a range. */ |
| |
| err = populate_ggtt(i915); |
| if (err) |
| goto cleanup; |
| |
| /* Everything is pinned, nothing should happen */ |
| err = i915_gem_evict_for_node(&ggtt->base, &target, 0); |
| if (err != -ENOSPC) { |
| pr_err("i915_gem_evict_for_node on a full GGTT returned err=%d\n", |
| err); |
| goto cleanup; |
| } |
| |
| unpin_ggtt(i915); |
| |
| /* Everything is unpinned, we should be able to evict the node */ |
| err = i915_gem_evict_for_node(&ggtt->base, &target, 0); |
| if (err) { |
| pr_err("i915_gem_evict_for_node returned err=%d\n", |
| err); |
| goto cleanup; |
| } |
| |
| cleanup: |
| cleanup_objects(i915); |
| return err; |
| } |
| |
| static void mock_color_adjust(const struct drm_mm_node *node, |
| unsigned long color, |
| u64 *start, |
| u64 *end) |
| { |
| } |
| |
| static int igt_evict_for_cache_color(void *arg) |
| { |
| struct drm_i915_private *i915 = arg; |
| struct i915_ggtt *ggtt = &i915->ggtt; |
| const unsigned long flags = PIN_OFFSET_FIXED; |
| struct drm_mm_node target = { |
| .start = I915_GTT_PAGE_SIZE * 2, |
| .size = I915_GTT_PAGE_SIZE, |
| .color = I915_CACHE_LLC, |
| }; |
| struct drm_i915_gem_object *obj; |
| struct i915_vma *vma; |
| int err; |
| |
| /* Currently the use of color_adjust is limited to cache domains within |
| * the ggtt, and so the presence of mm.color_adjust is assumed to be |
| * i915_gtt_color_adjust throughout our driver, so using a mock color |
| * adjust will work just fine for our purposes. |
| */ |
| ggtt->base.mm.color_adjust = mock_color_adjust; |
| |
| obj = i915_gem_object_create_internal(i915, I915_GTT_PAGE_SIZE); |
| if (IS_ERR(obj)) { |
| err = PTR_ERR(obj); |
| goto cleanup; |
| } |
| i915_gem_object_set_cache_level(obj, I915_CACHE_LLC); |
| |
| vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, |
| I915_GTT_PAGE_SIZE | flags); |
| if (IS_ERR(vma)) { |
| pr_err("[0]i915_gem_object_ggtt_pin failed\n"); |
| err = PTR_ERR(vma); |
| goto cleanup; |
| } |
| |
| obj = i915_gem_object_create_internal(i915, I915_GTT_PAGE_SIZE); |
| if (IS_ERR(obj)) { |
| err = PTR_ERR(obj); |
| goto cleanup; |
| } |
| i915_gem_object_set_cache_level(obj, I915_CACHE_LLC); |
| |
| /* Neighbouring; same colour - should fit */ |
| vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, |
| (I915_GTT_PAGE_SIZE * 2) | flags); |
| if (IS_ERR(vma)) { |
| pr_err("[1]i915_gem_object_ggtt_pin failed\n"); |
| err = PTR_ERR(vma); |
| goto cleanup; |
| } |
| |
| i915_vma_unpin(vma); |
| |
| /* Remove just the second vma */ |
| err = i915_gem_evict_for_node(&ggtt->base, &target, 0); |
| if (err) { |
| pr_err("[0]i915_gem_evict_for_node returned err=%d\n", err); |
| goto cleanup; |
| } |
| |
| /* Attempt to remove the first *pinned* vma, by removing the (empty) |
| * neighbour -- this should fail. |
| */ |
| target.color = I915_CACHE_L3_LLC; |
| |
| err = i915_gem_evict_for_node(&ggtt->base, &target, 0); |
| if (!err) { |
| pr_err("[1]i915_gem_evict_for_node returned err=%d\n", err); |
| err = -EINVAL; |
| goto cleanup; |
| } |
| |
| err = 0; |
| |
| cleanup: |
| unpin_ggtt(i915); |
| cleanup_objects(i915); |
| ggtt->base.mm.color_adjust = NULL; |
| return err; |
| } |
| |
| static int igt_evict_vm(void *arg) |
| { |
| struct drm_i915_private *i915 = arg; |
| struct i915_ggtt *ggtt = &i915->ggtt; |
| int err; |
| |
| /* Fill the GGTT with pinned objects and try to evict everything. */ |
| |
| err = populate_ggtt(i915); |
| if (err) |
| goto cleanup; |
| |
| /* Everything is pinned, nothing should happen */ |
| err = i915_gem_evict_vm(&ggtt->base); |
| if (err) { |
| pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n", |
| err); |
| goto cleanup; |
| } |
| |
| unpin_ggtt(i915); |
| |
| err = i915_gem_evict_vm(&ggtt->base); |
| if (err) { |
| pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n", |
| err); |
| goto cleanup; |
| } |
| |
| cleanup: |
| cleanup_objects(i915); |
| return err; |
| } |
| |
| int i915_gem_evict_mock_selftests(void) |
| { |
| static const struct i915_subtest tests[] = { |
| SUBTEST(igt_evict_something), |
| SUBTEST(igt_evict_for_vma), |
| SUBTEST(igt_evict_for_cache_color), |
| SUBTEST(igt_evict_vm), |
| SUBTEST(igt_overcommit), |
| }; |
| struct drm_i915_private *i915; |
| int err; |
| |
| i915 = mock_gem_device(); |
| if (!i915) |
| return -ENOMEM; |
| |
| mutex_lock(&i915->drm.struct_mutex); |
| err = i915_subtests(tests, i915); |
| mutex_unlock(&i915->drm.struct_mutex); |
| |
| drm_dev_unref(&i915->drm); |
| return err; |
| } |