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 "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" 33 #include "mock_gtt.h" 34 #include "mock_uncore.h" 35 36 void mock_device_flush(struct drm_i915_private *i915) 37 { 38 struct intel_engine_cs *engine; 39 enum intel_engine_id id; 40 41 lockdep_assert_held(&i915->drm.struct_mutex); 42 43 for_each_engine(engine, i915, id) 44 mock_engine_flush(engine); 45 46 i915_retire_requests(i915); 47 GEM_BUG_ON(i915->gt.active_requests); 48 } 49 50 static void mock_device_release(struct drm_device *dev) 51 { 52 struct drm_i915_private *i915 = to_i915(dev); 53 struct intel_engine_cs *engine; 54 enum intel_engine_id id; 55 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); 60 61 drain_delayed_work(&i915->gt.retire_work); 62 drain_delayed_work(&i915->gt.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 i915_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 struct drm_i915_private *i915 = 113 container_of(work, typeof(*i915), gt.idle_work.work); 114 115 i915->gt.active_engines = 0; 116 } 117 118 static int pm_domain_resume(struct device *dev) 119 { 120 return pm_generic_runtime_resume(dev); 121 } 122 123 static int pm_domain_suspend(struct device *dev) 124 { 125 return pm_generic_runtime_suspend(dev); 126 } 127 128 static struct dev_pm_domain pm_domain = { 129 .ops = { 130 .runtime_suspend = pm_domain_suspend, 131 .runtime_resume = pm_domain_resume, 132 }, 133 }; 134 135 struct drm_i915_private *mock_gem_device(void) 136 { 137 struct drm_i915_private *i915; 138 struct pci_dev *pdev; 139 int err; 140 141 pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL); 142 if (!pdev) 143 goto err; 144 145 device_initialize(&pdev->dev); 146 pdev->class = PCI_BASE_CLASS_DISPLAY << 16; 147 pdev->dev.release = release_dev; 148 dev_set_name(&pdev->dev, "mock"); 149 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 150 151 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU) 152 /* hack to disable iommu for the fake device; force identity mapping */ 153 pdev->dev.archdata.iommu = (void *)-1; 154 #endif 155 156 i915 = (struct drm_i915_private *)(pdev + 1); 157 pci_set_drvdata(pdev, i915); 158 159 intel_runtime_pm_init_early(i915); 160 161 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)); 166 167 err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); 168 if (err) { 169 pr_err("Failed to initialise mock GEM device: err=%d\n", err); 170 goto put_device; 171 } 172 i915->drm.pdev = pdev; 173 i915->drm.dev_private = i915; 174 175 /* Using the global GTT may ask questions about KMS users, so prepare */ 176 drm_mode_config_init(&i915->drm); 177 178 mkwrite_device_info(i915)->gen = -1; 179 180 mkwrite_device_info(i915)->page_sizes = 181 I915_GTT_PAGE_SIZE_4K | 182 I915_GTT_PAGE_SIZE_64K | 183 I915_GTT_PAGE_SIZE_2M; 184 185 mock_uncore_init(&i915->uncore); 186 i915_gem_init__mm(i915); 187 188 init_waitqueue_head(&i915->gpu_error.wait_queue); 189 init_waitqueue_head(&i915->gpu_error.reset_queue); 190 init_srcu_struct(&i915->gpu_error.reset_backoff_srcu); 191 mutex_init(&i915->gpu_error.wedge_mutex); 192 193 i915->wq = alloc_ordered_workqueue("mock", 0); 194 if (!i915->wq) 195 goto err_drv; 196 197 mock_init_contexts(i915); 198 199 INIT_DELAYED_WORK(&i915->gt.retire_work, mock_retire_work_handler); 200 INIT_DELAYED_WORK(&i915->gt.idle_work, mock_idle_work_handler); 201 202 i915->gt.awake = true; 203 204 i915_timelines_init(i915); 205 206 INIT_LIST_HEAD(&i915->gt.active_rings); 207 INIT_LIST_HEAD(&i915->gt.closed_vma); 208 209 mutex_lock(&i915->drm.struct_mutex); 210 211 mock_init_ggtt(i915, &i915->ggtt); 212 213 mkwrite_device_info(i915)->engine_mask = BIT(0); 214 i915->kernel_context = mock_context(i915, NULL); 215 if (!i915->kernel_context) 216 goto err_unlock; 217 218 i915->engine[RCS0] = mock_engine(i915, "mock", RCS0); 219 if (!i915->engine[RCS0]) 220 goto err_context; 221 222 mutex_unlock(&i915->drm.struct_mutex); 223 224 WARN_ON(i915_gemfs_init(i915)); 225 226 return i915; 227 228 err_context: 229 i915_gem_contexts_fini(i915); 230 err_unlock: 231 mutex_unlock(&i915->drm.struct_mutex); 232 i915_timelines_fini(i915); 233 destroy_workqueue(i915->wq); 234 err_drv: 235 drm_mode_config_cleanup(&i915->drm); 236 drm_dev_fini(&i915->drm); 237 put_device: 238 put_device(&pdev->dev); 239 err: 240 return NULL; 241 } 242