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/mock_engine.h" 30 31 #include "mock_request.h" 32 #include "mock_gem_device.h" 33 #include "mock_gtt.h" 34 #include "mock_uncore.h" 35 36 #include "gem/selftests/mock_context.h" 37 #include "gem/selftests/mock_gem_object.h" 38 39 void mock_device_flush(struct drm_i915_private *i915) 40 { 41 struct intel_engine_cs *engine; 42 enum intel_engine_id id; 43 44 lockdep_assert_held(&i915->drm.struct_mutex); 45 46 do { 47 for_each_engine(engine, i915, id) 48 mock_engine_flush(engine); 49 } while (i915_retire_requests(i915)); 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 mutex_lock(&i915->drm.struct_mutex); 59 mock_device_flush(i915); 60 mutex_unlock(&i915->drm.struct_mutex); 61 62 flush_work(&i915->gem.idle_work); 63 i915_gem_drain_workqueue(i915); 64 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); 70 71 intel_timelines_fini(i915); 72 73 drain_workqueue(i915->wq); 74 i915_gem_drain_freed_objects(i915); 75 76 mutex_lock(&i915->drm.struct_mutex); 77 mock_fini_ggtt(&i915->ggtt); 78 mutex_unlock(&i915->drm.struct_mutex); 79 80 destroy_workqueue(i915->wq); 81 82 i915_gemfs_fini(i915); 83 84 drm_mode_config_cleanup(&i915->drm); 85 86 drm_dev_fini(&i915->drm); 87 put_device(&i915->drm.pdev->dev); 88 } 89 90 static struct drm_driver mock_driver = { 91 .name = "mock", 92 .driver_features = DRIVER_GEM, 93 .release = mock_device_release, 94 95 .gem_close_object = i915_gem_close_object, 96 .gem_free_object_unlocked = i915_gem_free_object, 97 }; 98 99 static void release_dev(struct device *dev) 100 { 101 struct pci_dev *pdev = to_pci_dev(dev); 102 103 kfree(pdev); 104 } 105 106 static void mock_retire_work_handler(struct work_struct *work) 107 { 108 } 109 110 static void mock_idle_work_handler(struct work_struct *work) 111 { 112 } 113 114 static int pm_domain_resume(struct device *dev) 115 { 116 return pm_generic_runtime_resume(dev); 117 } 118 119 static int pm_domain_suspend(struct device *dev) 120 { 121 return pm_generic_runtime_suspend(dev); 122 } 123 124 static struct dev_pm_domain pm_domain = { 125 .ops = { 126 .runtime_suspend = pm_domain_suspend, 127 .runtime_resume = pm_domain_resume, 128 }, 129 }; 130 131 struct drm_i915_private *mock_gem_device(void) 132 { 133 struct drm_i915_private *i915; 134 struct pci_dev *pdev; 135 int err; 136 137 pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL); 138 if (!pdev) 139 goto err; 140 141 device_initialize(&pdev->dev); 142 pdev->class = PCI_BASE_CLASS_DISPLAY << 16; 143 pdev->dev.release = release_dev; 144 dev_set_name(&pdev->dev, "mock"); 145 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 146 147 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU) 148 /* hack to disable iommu for the fake device; force identity mapping */ 149 pdev->dev.archdata.iommu = (void *)-1; 150 #endif 151 152 i915 = (struct drm_i915_private *)(pdev + 1); 153 pci_set_drvdata(pdev, i915); 154 155 dev_pm_domain_set(&pdev->dev, &pm_domain); 156 pm_runtime_enable(&pdev->dev); 157 pm_runtime_dont_use_autosuspend(&pdev->dev); 158 if (pm_runtime_enabled(&pdev->dev)) 159 WARN_ON(pm_runtime_get_sync(&pdev->dev)); 160 161 err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); 162 if (err) { 163 pr_err("Failed to initialise mock GEM device: err=%d\n", err); 164 goto put_device; 165 } 166 i915->drm.pdev = pdev; 167 i915->drm.dev_private = i915; 168 169 intel_runtime_pm_init_early(&i915->runtime_pm); 170 171 /* Using the global GTT may ask questions about KMS users, so prepare */ 172 drm_mode_config_init(&i915->drm); 173 174 mkwrite_device_info(i915)->gen = -1; 175 176 mkwrite_device_info(i915)->page_sizes = 177 I915_GTT_PAGE_SIZE_4K | 178 I915_GTT_PAGE_SIZE_64K | 179 I915_GTT_PAGE_SIZE_2M; 180 181 mock_uncore_init(&i915->uncore); 182 i915_gem_init__mm(i915); 183 intel_gt_init_early(&i915->gt, i915); 184 atomic_inc(&i915->gt.wakeref.count); /* disable; no hw support */ 185 186 i915->wq = alloc_ordered_workqueue("mock", 0); 187 if (!i915->wq) 188 goto err_drv; 189 190 mock_init_contexts(i915); 191 192 INIT_DELAYED_WORK(&i915->gem.retire_work, mock_retire_work_handler); 193 INIT_WORK(&i915->gem.idle_work, mock_idle_work_handler); 194 195 i915->gt.awake = true; 196 197 intel_timelines_init(i915); 198 199 mutex_lock(&i915->drm.struct_mutex); 200 201 mock_init_ggtt(i915, &i915->ggtt); 202 203 mkwrite_device_info(i915)->engine_mask = BIT(0); 204 205 i915->engine[RCS0] = mock_engine(i915, "mock", RCS0); 206 if (!i915->engine[RCS0]) 207 goto err_unlock; 208 209 i915->kernel_context = mock_context(i915, NULL); 210 if (!i915->kernel_context) 211 goto err_engine; 212 213 if (mock_engine_init(i915->engine[RCS0])) 214 goto err_context; 215 216 intel_engines_driver_register(i915); 217 mutex_unlock(&i915->drm.struct_mutex); 218 219 WARN_ON(i915_gemfs_init(i915)); 220 221 return i915; 222 223 err_context: 224 i915_gem_contexts_fini(i915); 225 err_engine: 226 mock_engine_free(i915->engine[RCS0]); 227 err_unlock: 228 mutex_unlock(&i915->drm.struct_mutex); 229 intel_timelines_fini(i915); 230 destroy_workqueue(i915->wq); 231 err_drv: 232 drm_mode_config_cleanup(&i915->drm); 233 drm_dev_fini(&i915->drm); 234 put_device: 235 put_device(&pdev->dev); 236 err: 237 return NULL; 238 } 239