2 * Copyright © 2016 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
25 #include <linux/pm_domain.h>
26 #include <linux/pm_runtime.h>
28 #include "mock_engine.h"
29 #include "mock_context.h"
30 #include "mock_request.h"
31 #include "mock_gem_device.h"
32 #include "mock_gem_object.h"
34 #include "mock_uncore.h"
36 void mock_device_flush(struct drm_i915_private *i915)
38 struct intel_engine_cs *engine;
39 enum intel_engine_id id;
41 lockdep_assert_held(&i915->drm.struct_mutex);
43 for_each_engine(engine, i915, id)
44 mock_engine_flush(engine);
46 i915_retire_requests(i915);
47 GEM_BUG_ON(i915->gt.active_requests);
50 static void mock_device_release(struct drm_device *dev)
52 struct drm_i915_private *i915 = to_i915(dev);
53 struct intel_engine_cs *engine;
54 enum intel_engine_id id;
56 mutex_lock(&i915->drm.struct_mutex);
57 mock_device_flush(i915);
58 i915_gem_contexts_lost(i915);
59 mutex_unlock(&i915->drm.struct_mutex);
61 cancel_delayed_work_sync(&i915->gt.retire_work);
62 cancel_delayed_work_sync(&i915->gt.idle_work);
63 i915_gem_drain_workqueue(i915);
65 mutex_lock(&i915->drm.struct_mutex);
66 for_each_engine(engine, i915, id)
67 mock_engine_free(engine);
68 i915_gem_contexts_fini(i915);
69 mutex_unlock(&i915->drm.struct_mutex);
71 drain_workqueue(i915->wq);
72 i915_gem_drain_freed_objects(i915);
74 mutex_lock(&i915->drm.struct_mutex);
76 i915_gem_timeline_fini(&i915->gt.global_timeline);
77 mutex_unlock(&i915->drm.struct_mutex);
79 destroy_workqueue(i915->wq);
81 kmem_cache_destroy(i915->priorities);
82 kmem_cache_destroy(i915->dependencies);
83 kmem_cache_destroy(i915->requests);
84 kmem_cache_destroy(i915->vmas);
85 kmem_cache_destroy(i915->objects);
87 i915_gemfs_fini(i915);
89 drm_mode_config_cleanup(&i915->drm);
91 drm_dev_fini(&i915->drm);
92 put_device(&i915->drm.pdev->dev);
95 static struct drm_driver mock_driver = {
97 .driver_features = DRIVER_GEM,
98 .release = mock_device_release,
100 .gem_close_object = i915_gem_close_object,
101 .gem_free_object_unlocked = i915_gem_free_object,
104 static void release_dev(struct device *dev)
106 struct pci_dev *pdev = to_pci_dev(dev);
111 static void mock_retire_work_handler(struct work_struct *work)
115 static void mock_idle_work_handler(struct work_struct *work)
119 static int pm_domain_resume(struct device *dev)
121 return pm_generic_runtime_resume(dev);
124 static int pm_domain_suspend(struct device *dev)
126 return pm_generic_runtime_suspend(dev);
129 static struct dev_pm_domain pm_domain = {
131 .runtime_suspend = pm_domain_suspend,
132 .runtime_resume = pm_domain_resume,
136 struct drm_i915_private *mock_gem_device(void)
138 struct drm_i915_private *i915;
139 struct intel_engine_cs *engine;
140 enum intel_engine_id id;
141 struct pci_dev *pdev;
144 pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL);
148 device_initialize(&pdev->dev);
149 pdev->class = PCI_BASE_CLASS_DISPLAY << 16;
150 pdev->dev.release = release_dev;
151 dev_set_name(&pdev->dev, "mock");
152 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
154 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
155 /* hack to disable iommu for the fake device; force identity mapping */
156 pdev->dev.archdata.iommu = (void *)-1;
159 dev_pm_domain_set(&pdev->dev, &pm_domain);
160 pm_runtime_enable(&pdev->dev);
161 pm_runtime_dont_use_autosuspend(&pdev->dev);
162 WARN_ON(pm_runtime_get_sync(&pdev->dev));
164 i915 = (struct drm_i915_private *)(pdev + 1);
165 pci_set_drvdata(pdev, i915);
167 err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev);
169 pr_err("Failed to initialise mock GEM device: err=%d\n", err);
172 i915->drm.pdev = pdev;
173 i915->drm.dev_private = i915;
175 /* Using the global GTT may ask questions about KMS users, so prepare */
176 drm_mode_config_init(&i915->drm);
178 mkwrite_device_info(i915)->gen = -1;
180 mkwrite_device_info(i915)->page_sizes =
181 I915_GTT_PAGE_SIZE_4K |
182 I915_GTT_PAGE_SIZE_64K |
183 I915_GTT_PAGE_SIZE_2M;
185 mock_uncore_init(i915);
186 i915_gem_init__mm(i915);
188 init_waitqueue_head(&i915->gpu_error.wait_queue);
189 init_waitqueue_head(&i915->gpu_error.reset_queue);
191 i915->wq = alloc_ordered_workqueue("mock", 0);
195 mock_init_contexts(i915);
197 INIT_DELAYED_WORK(&i915->gt.retire_work, mock_retire_work_handler);
198 INIT_DELAYED_WORK(&i915->gt.idle_work, mock_idle_work_handler);
200 i915->gt.awake = true;
202 i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN);
206 i915->vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN);
210 i915->requests = KMEM_CACHE(mock_request,
212 SLAB_RECLAIM_ACCOUNT |
213 SLAB_TYPESAFE_BY_RCU);
217 i915->dependencies = KMEM_CACHE(i915_dependency,
219 SLAB_RECLAIM_ACCOUNT);
220 if (!i915->dependencies)
223 i915->priorities = KMEM_CACHE(i915_priolist, SLAB_HWCACHE_ALIGN);
224 if (!i915->priorities)
225 goto err_dependencies;
227 mutex_lock(&i915->drm.struct_mutex);
228 INIT_LIST_HEAD(&i915->gt.rings);
229 INIT_LIST_HEAD(&i915->gt.timelines);
230 err = i915_gem_timeline_init__global(i915);
232 mutex_unlock(&i915->drm.struct_mutex);
236 mock_init_ggtt(i915);
237 mutex_unlock(&i915->drm.struct_mutex);
239 mkwrite_device_info(i915)->ring_mask = BIT(0);
240 i915->engine[RCS] = mock_engine(i915, "mock", RCS);
241 if (!i915->engine[RCS])
244 i915->kernel_context = mock_context(i915, NULL);
245 if (!i915->kernel_context)
248 WARN_ON(i915_gemfs_init(i915));
253 for_each_engine(engine, i915, id)
254 mock_engine_free(engine);
256 kmem_cache_destroy(i915->priorities);
258 kmem_cache_destroy(i915->dependencies);
260 kmem_cache_destroy(i915->requests);
262 kmem_cache_destroy(i915->vmas);
264 kmem_cache_destroy(i915->objects);
266 destroy_workqueue(i915->wq);
268 drm_mode_config_cleanup(&i915->drm);
269 drm_dev_fini(&i915->drm);
271 put_device(&pdev->dev);