1 /* 2 * Copyright © 2016 Intel Corporation 3 * 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: 10 * 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 13 * Software. 14 * 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 21 * IN THE SOFTWARE. 22 * 23 */ 24 25 #include <linux/pm_domain.h> 26 #include <linux/pm_runtime.h> 27 28 #include "gt/intel_gt.h" 29 #include "gt/intel_gt_requests.h" 30 #include "gt/mock_engine.h" 31 32 #include "mock_request.h" 33 #include "mock_gem_device.h" 34 #include "mock_gtt.h" 35 #include "mock_uncore.h" 36 37 #include "gem/selftests/mock_context.h" 38 #include "gem/selftests/mock_gem_object.h" 39 40 void mock_device_flush(struct drm_i915_private *i915) 41 { 42 struct intel_engine_cs *engine; 43 enum intel_engine_id id; 44 45 do { 46 for_each_engine(engine, i915, id) 47 mock_engine_flush(engine); 48 } while (intel_gt_retire_requests_timeout(&i915->gt, 49 MAX_SCHEDULE_TIMEOUT)); 50 } 51 52 static void mock_device_release(struct drm_device *dev) 53 { 54 struct drm_i915_private *i915 = to_i915(dev); 55 struct intel_engine_cs *engine; 56 enum intel_engine_id id; 57 58 mock_device_flush(i915); 59 60 i915_gem_drain_workqueue(i915); 61 62 for_each_engine(engine, i915, id) 63 mock_engine_free(engine); 64 i915_gem_driver_release__contexts(i915); 65 66 intel_timelines_fini(i915); 67 68 drain_workqueue(i915->wq); 69 i915_gem_drain_freed_objects(i915); 70 71 mock_fini_ggtt(&i915->ggtt); 72 destroy_workqueue(i915->wq); 73 74 i915_gemfs_fini(i915); 75 76 drm_mode_config_cleanup(&i915->drm); 77 78 drm_dev_fini(&i915->drm); 79 put_device(&i915->drm.pdev->dev); 80 } 81 82 static struct drm_driver mock_driver = { 83 .name = "mock", 84 .driver_features = DRIVER_GEM, 85 .release = mock_device_release, 86 87 .gem_close_object = i915_gem_close_object, 88 .gem_free_object_unlocked = i915_gem_free_object, 89 }; 90 91 static void release_dev(struct device *dev) 92 { 93 struct pci_dev *pdev = to_pci_dev(dev); 94 95 kfree(pdev); 96 } 97 98 static int pm_domain_resume(struct device *dev) 99 { 100 return pm_generic_runtime_resume(dev); 101 } 102 103 static int pm_domain_suspend(struct device *dev) 104 { 105 return pm_generic_runtime_suspend(dev); 106 } 107 108 static struct dev_pm_domain pm_domain = { 109 .ops = { 110 .runtime_suspend = pm_domain_suspend, 111 .runtime_resume = pm_domain_resume, 112 }, 113 }; 114 115 struct drm_i915_private *mock_gem_device(void) 116 { 117 struct drm_i915_private *i915; 118 struct pci_dev *pdev; 119 int err; 120 121 pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL); 122 if (!pdev) 123 goto err; 124 125 device_initialize(&pdev->dev); 126 pdev->class = PCI_BASE_CLASS_DISPLAY << 16; 127 pdev->dev.release = release_dev; 128 dev_set_name(&pdev->dev, "mock"); 129 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 130 131 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU) 132 /* hack to disable iommu for the fake device; force identity mapping */ 133 pdev->dev.archdata.iommu = (void *)-1; 134 #endif 135 136 i915 = (struct drm_i915_private *)(pdev + 1); 137 pci_set_drvdata(pdev, i915); 138 139 dev_pm_domain_set(&pdev->dev, &pm_domain); 140 pm_runtime_enable(&pdev->dev); 141 pm_runtime_dont_use_autosuspend(&pdev->dev); 142 if (pm_runtime_enabled(&pdev->dev)) 143 WARN_ON(pm_runtime_get_sync(&pdev->dev)); 144 145 err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); 146 if (err) { 147 pr_err("Failed to initialise mock GEM device: err=%d\n", err); 148 goto put_device; 149 } 150 i915->drm.pdev = pdev; 151 i915->drm.dev_private = i915; 152 153 intel_runtime_pm_init_early(&i915->runtime_pm); 154 155 /* Using the global GTT may ask questions about KMS users, so prepare */ 156 drm_mode_config_init(&i915->drm); 157 158 mkwrite_device_info(i915)->gen = -1; 159 160 mkwrite_device_info(i915)->page_sizes = 161 I915_GTT_PAGE_SIZE_4K | 162 I915_GTT_PAGE_SIZE_64K | 163 I915_GTT_PAGE_SIZE_2M; 164 165 mock_uncore_init(&i915->uncore); 166 i915_gem_init__mm(i915); 167 intel_gt_init_early(&i915->gt, i915); 168 atomic_inc(&i915->gt.wakeref.count); /* disable; no hw support */ 169 i915->gt.awake = -ENODEV; 170 171 i915->wq = alloc_ordered_workqueue("mock", 0); 172 if (!i915->wq) 173 goto err_drv; 174 175 mock_init_contexts(i915); 176 177 intel_timelines_init(i915); 178 179 mock_init_ggtt(i915, &i915->ggtt); 180 181 mkwrite_device_info(i915)->engine_mask = BIT(0); 182 183 i915->engine[RCS0] = mock_engine(i915, "mock", RCS0); 184 if (!i915->engine[RCS0]) 185 goto err_unlock; 186 187 i915->kernel_context = mock_context(i915, NULL); 188 if (!i915->kernel_context) 189 goto err_engine; 190 191 if (mock_engine_init(i915->engine[RCS0])) 192 goto err_context; 193 194 intel_engines_driver_register(i915); 195 196 WARN_ON(i915_gemfs_init(i915)); 197 198 return i915; 199 200 err_context: 201 i915_gem_driver_release__contexts(i915); 202 err_engine: 203 mock_engine_free(i915->engine[RCS0]); 204 err_unlock: 205 intel_timelines_fini(i915); 206 destroy_workqueue(i915->wq); 207 err_drv: 208 drm_mode_config_cleanup(&i915->drm); 209 drm_dev_fini(&i915->drm); 210 put_device: 211 put_device(&pdev->dev); 212 err: 213 return NULL; 214 } 215