2 * Copyright © 2016 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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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>
27 #include <linux/iommu.h>
29 #include <drm/drm_managed.h>
31 #include "gt/intel_gt.h"
32 #include "gt/intel_gt_requests.h"
33 #include "gt/mock_engine.h"
34 #include "intel_memory_region.h"
35 #include "intel_region_ttm.h"
37 #include "mock_request.h"
38 #include "mock_gem_device.h"
40 #include "mock_uncore.h"
41 #include "mock_region.h"
43 #include "gem/selftests/mock_context.h"
44 #include "gem/selftests/mock_gem_object.h"
46 void mock_device_flush(struct drm_i915_private *i915)
48 struct intel_gt *gt = to_gt(i915);
49 struct intel_engine_cs *engine;
50 enum intel_engine_id id;
53 for_each_engine(engine, gt, id)
54 mock_engine_flush(engine);
55 } while (intel_gt_retire_requests_timeout(gt, MAX_SCHEDULE_TIMEOUT,
59 static void mock_device_release(struct drm_device *dev)
61 struct drm_i915_private *i915 = to_i915(dev);
63 if (!i915->do_release)
66 mock_device_flush(i915);
67 intel_gt_driver_remove(to_gt(i915));
69 i915_gem_drain_workqueue(i915);
71 mock_fini_ggtt(to_gt(i915)->ggtt);
72 destroy_workqueue(i915->wq);
74 intel_region_ttm_device_fini(i915);
75 intel_gt_driver_late_release_all(i915);
76 intel_memory_regions_driver_release(i915);
78 drm_mode_config_cleanup(&i915->drm);
81 i915_params_free(&i915->params);
84 static const struct drm_driver mock_driver = {
86 .driver_features = DRIVER_GEM,
87 .release = mock_device_release,
90 static void release_dev(struct device *dev)
92 struct pci_dev *pdev = to_pci_dev(dev);
97 static int pm_domain_resume(struct device *dev)
99 return pm_generic_runtime_resume(dev);
102 static int pm_domain_suspend(struct device *dev)
104 return pm_generic_runtime_suspend(dev);
107 static struct dev_pm_domain pm_domain = {
109 .runtime_suspend = pm_domain_suspend,
110 .runtime_resume = pm_domain_resume,
114 static void mock_gt_probe(struct drm_i915_private *i915)
116 i915->gt[0] = &i915->gt0;
117 i915->gt[0]->name = "Mock GT";
120 struct drm_i915_private *mock_gem_device(void)
122 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
123 static struct dev_iommu fake_iommu = { .priv = (void *)-1 };
125 struct drm_i915_private *i915;
126 struct intel_device_info *i915_info;
127 struct pci_dev *pdev;
131 pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
134 device_initialize(&pdev->dev);
135 pdev->class = PCI_BASE_CLASS_DISPLAY << 16;
136 pdev->dev.release = release_dev;
137 dev_set_name(&pdev->dev, "mock");
138 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
140 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
141 /* HACK to disable iommu for the fake device; force identity mapping */
142 pdev->dev.iommu = &fake_iommu;
144 if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
145 put_device(&pdev->dev);
149 i915 = devm_drm_dev_alloc(&pdev->dev, &mock_driver,
150 struct drm_i915_private, drm);
152 pr_err("Failed to allocate mock GEM device: err=%ld\n", PTR_ERR(i915));
153 devres_release_group(&pdev->dev, NULL);
154 put_device(&pdev->dev);
159 pci_set_drvdata(pdev, i915);
161 dev_pm_domain_set(&pdev->dev, &pm_domain);
162 pm_runtime_enable(&pdev->dev);
163 pm_runtime_dont_use_autosuspend(&pdev->dev);
164 if (pm_runtime_enabled(&pdev->dev))
165 WARN_ON(pm_runtime_get_sync(&pdev->dev));
168 i915_params_copy(&i915->params, &i915_modparams);
170 intel_runtime_pm_init_early(&i915->runtime_pm);
171 /* wakeref tracking has significant overhead */
172 i915->runtime_pm.no_wakeref_tracking = true;
174 /* Using the global GTT may ask questions about KMS users, so prepare */
175 drm_mode_config_init(&i915->drm);
177 RUNTIME_INFO(i915)->graphics.ip.ver = -1;
179 RUNTIME_INFO(i915)->page_sizes =
180 I915_GTT_PAGE_SIZE_4K |
181 I915_GTT_PAGE_SIZE_64K |
182 I915_GTT_PAGE_SIZE_2M;
184 RUNTIME_INFO(i915)->memory_regions = REGION_SMEM;
186 /* simply use legacy cache level for mock device */
187 i915_info = (struct intel_device_info *)INTEL_INFO(i915);
188 i915_info->max_pat_index = 3;
189 for (i = 0; i < I915_MAX_CACHE_LEVEL; i++)
190 i915_info->cachelevel_to_pat[i] = i;
192 intel_memory_regions_hw_probe(i915);
194 spin_lock_init(&i915->gpu_error.lock);
196 i915_gem_init__mm(i915);
197 intel_root_gt_init_early(i915);
198 mock_uncore_init(&i915->uncore, i915);
199 atomic_inc(&to_gt(i915)->wakeref.count); /* disable; no hw support */
200 to_gt(i915)->awake = -ENODEV;
203 ret = intel_region_ttm_device_init(i915);
207 i915->wq = alloc_ordered_workqueue("mock", 0);
211 mock_init_contexts(i915);
213 /* allocate the ggtt */
214 ret = intel_gt_assign_ggtt(to_gt(i915));
218 mock_init_ggtt(to_gt(i915));
219 to_gt(i915)->vm = i915_vm_get(&to_gt(i915)->ggtt->vm);
221 RUNTIME_INFO(i915)->platform_engine_mask = BIT(0);
222 to_gt(i915)->info.engine_mask = BIT(0);
224 to_gt(i915)->engine[RCS0] = mock_engine(i915, "mock", RCS0);
225 if (!to_gt(i915)->engine[RCS0])
228 if (mock_engine_init(to_gt(i915)->engine[RCS0]))
231 __clear_bit(I915_WEDGED, &to_gt(i915)->reset.flags);
232 intel_engines_driver_register(i915);
234 i915->do_release = true;
235 ida_init(&i915->selftest.mock_region_instances);
240 intel_gt_driver_remove(to_gt(i915));
242 destroy_workqueue(i915->wq);
244 intel_region_ttm_device_fini(i915);
246 intel_gt_driver_late_release_all(i915);
247 intel_memory_regions_driver_release(i915);
248 drm_mode_config_cleanup(&i915->drm);
249 mock_destroy_device(i915);
254 void mock_destroy_device(struct drm_i915_private *i915)
256 struct device *dev = i915->drm.dev;
258 devres_release_group(dev, NULL);