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 cancel_delayed_work_sync(&i915->gt.retire_work); 62 cancel_delayed_work_sync(&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 drain_workqueue(i915->wq); 72 i915_gem_drain_freed_objects(i915); 73 74 mutex_lock(&i915->drm.struct_mutex); 75 mock_fini_ggtt(i915); 76 mutex_unlock(&i915->drm.struct_mutex); 77 WARN_ON(!list_empty(&i915->gt.timelines)); 78 79 destroy_workqueue(i915->wq); 80 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); 86 87 i915_gemfs_fini(i915); 88 89 drm_mode_config_cleanup(&i915->drm); 90 91 drm_dev_fini(&i915->drm); 92 put_device(&i915->drm.pdev->dev); 93 } 94 95 static struct drm_driver mock_driver = { 96 .name = "mock", 97 .driver_features = DRIVER_GEM, 98 .release = mock_device_release, 99 100 .gem_close_object = i915_gem_close_object, 101 .gem_free_object_unlocked = i915_gem_free_object, 102 }; 103 104 static void release_dev(struct device *dev) 105 { 106 struct pci_dev *pdev = to_pci_dev(dev); 107 108 kfree(pdev); 109 } 110 111 static void mock_retire_work_handler(struct work_struct *work) 112 { 113 } 114 115 static void mock_idle_work_handler(struct work_struct *work) 116 { 117 } 118 119 static int pm_domain_resume(struct device *dev) 120 { 121 return pm_generic_runtime_resume(dev); 122 } 123 124 static int pm_domain_suspend(struct device *dev) 125 { 126 return pm_generic_runtime_suspend(dev); 127 } 128 129 static struct dev_pm_domain pm_domain = { 130 .ops = { 131 .runtime_suspend = pm_domain_suspend, 132 .runtime_resume = pm_domain_resume, 133 }, 134 }; 135 136 struct drm_i915_private *mock_gem_device(void) 137 { 138 struct drm_i915_private *i915; 139 struct pci_dev *pdev; 140 int err; 141 142 pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL); 143 if (!pdev) 144 goto err; 145 146 device_initialize(&pdev->dev); 147 pdev->class = PCI_BASE_CLASS_DISPLAY << 16; 148 pdev->dev.release = release_dev; 149 dev_set_name(&pdev->dev, "mock"); 150 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 151 152 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU) 153 /* hack to disable iommu for the fake device; force identity mapping */ 154 pdev->dev.archdata.iommu = (void *)-1; 155 #endif 156 157 dev_pm_domain_set(&pdev->dev, &pm_domain); 158 pm_runtime_enable(&pdev->dev); 159 pm_runtime_dont_use_autosuspend(&pdev->dev); 160 WARN_ON(pm_runtime_get_sync(&pdev->dev)); 161 162 i915 = (struct drm_i915_private *)(pdev + 1); 163 pci_set_drvdata(pdev, i915); 164 165 err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); 166 if (err) { 167 pr_err("Failed to initialise mock GEM device: err=%d\n", err); 168 goto put_device; 169 } 170 i915->drm.pdev = pdev; 171 i915->drm.dev_private = i915; 172 173 /* Using the global GTT may ask questions about KMS users, so prepare */ 174 drm_mode_config_init(&i915->drm); 175 176 mkwrite_device_info(i915)->gen = -1; 177 178 mkwrite_device_info(i915)->page_sizes = 179 I915_GTT_PAGE_SIZE_4K | 180 I915_GTT_PAGE_SIZE_64K | 181 I915_GTT_PAGE_SIZE_2M; 182 183 mock_uncore_init(i915); 184 i915_gem_init__mm(i915); 185 186 init_waitqueue_head(&i915->gpu_error.wait_queue); 187 init_waitqueue_head(&i915->gpu_error.reset_queue); 188 189 i915->wq = alloc_ordered_workqueue("mock", 0); 190 if (!i915->wq) 191 goto err_drv; 192 193 mock_init_contexts(i915); 194 195 INIT_DELAYED_WORK(&i915->gt.retire_work, mock_retire_work_handler); 196 INIT_DELAYED_WORK(&i915->gt.idle_work, mock_idle_work_handler); 197 198 i915->gt.awake = true; 199 200 i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN); 201 if (!i915->objects) 202 goto err_wq; 203 204 i915->vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN); 205 if (!i915->vmas) 206 goto err_objects; 207 208 i915->requests = KMEM_CACHE(mock_request, 209 SLAB_HWCACHE_ALIGN | 210 SLAB_RECLAIM_ACCOUNT | 211 SLAB_TYPESAFE_BY_RCU); 212 if (!i915->requests) 213 goto err_vmas; 214 215 i915->dependencies = KMEM_CACHE(i915_dependency, 216 SLAB_HWCACHE_ALIGN | 217 SLAB_RECLAIM_ACCOUNT); 218 if (!i915->dependencies) 219 goto err_requests; 220 221 i915->priorities = KMEM_CACHE(i915_priolist, SLAB_HWCACHE_ALIGN); 222 if (!i915->priorities) 223 goto err_dependencies; 224 225 INIT_LIST_HEAD(&i915->gt.timelines); 226 INIT_LIST_HEAD(&i915->gt.active_rings); 227 INIT_LIST_HEAD(&i915->gt.closed_vma); 228 229 mutex_lock(&i915->drm.struct_mutex); 230 231 mock_init_ggtt(i915); 232 233 mkwrite_device_info(i915)->ring_mask = BIT(0); 234 i915->kernel_context = mock_context(i915, NULL); 235 if (!i915->kernel_context) 236 goto err_unlock; 237 238 i915->engine[RCS] = mock_engine(i915, "mock", RCS); 239 if (!i915->engine[RCS]) 240 goto err_context; 241 242 mutex_unlock(&i915->drm.struct_mutex); 243 244 WARN_ON(i915_gemfs_init(i915)); 245 246 return i915; 247 248 err_context: 249 i915_gem_contexts_fini(i915); 250 err_unlock: 251 mutex_unlock(&i915->drm.struct_mutex); 252 kmem_cache_destroy(i915->priorities); 253 err_dependencies: 254 kmem_cache_destroy(i915->dependencies); 255 err_requests: 256 kmem_cache_destroy(i915->requests); 257 err_vmas: 258 kmem_cache_destroy(i915->vmas); 259 err_objects: 260 kmem_cache_destroy(i915->objects); 261 err_wq: 262 destroy_workqueue(i915->wq); 263 err_drv: 264 drm_mode_config_cleanup(&i915->drm); 265 drm_dev_fini(&i915->drm); 266 put_device: 267 put_device(&pdev->dev); 268 err: 269 return NULL; 270 } 271