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_runtime.h> 26 27 #include "mock_engine.h" 28 #include "mock_context.h" 29 #include "mock_request.h" 30 #include "mock_gem_device.h" 31 #include "mock_gem_object.h" 32 #include "mock_gtt.h" 33 #include "mock_uncore.h" 34 35 void mock_device_flush(struct drm_i915_private *i915) 36 { 37 struct intel_engine_cs *engine; 38 enum intel_engine_id id; 39 40 lockdep_assert_held(&i915->drm.struct_mutex); 41 42 for_each_engine(engine, i915, id) 43 mock_engine_flush(engine); 44 45 i915_gem_retire_requests(i915); 46 } 47 48 static void mock_device_release(struct drm_device *dev) 49 { 50 struct drm_i915_private *i915 = to_i915(dev); 51 struct intel_engine_cs *engine; 52 enum intel_engine_id id; 53 54 mutex_lock(&i915->drm.struct_mutex); 55 mock_device_flush(i915); 56 mutex_unlock(&i915->drm.struct_mutex); 57 58 cancel_delayed_work_sync(&i915->gt.retire_work); 59 cancel_delayed_work_sync(&i915->gt.idle_work); 60 61 mutex_lock(&i915->drm.struct_mutex); 62 for_each_engine(engine, i915, id) 63 mock_engine_free(engine); 64 i915_gem_context_fini(i915); 65 mutex_unlock(&i915->drm.struct_mutex); 66 67 drain_workqueue(i915->wq); 68 i915_gem_drain_freed_objects(i915); 69 70 mutex_lock(&i915->drm.struct_mutex); 71 mock_fini_ggtt(i915); 72 i915_gem_timeline_fini(&i915->gt.global_timeline); 73 mutex_unlock(&i915->drm.struct_mutex); 74 75 destroy_workqueue(i915->wq); 76 77 kmem_cache_destroy(i915->priorities); 78 kmem_cache_destroy(i915->dependencies); 79 kmem_cache_destroy(i915->requests); 80 kmem_cache_destroy(i915->vmas); 81 kmem_cache_destroy(i915->objects); 82 83 drm_dev_fini(&i915->drm); 84 put_device(&i915->drm.pdev->dev); 85 } 86 87 static struct drm_driver mock_driver = { 88 .name = "mock", 89 .driver_features = DRIVER_GEM, 90 .release = mock_device_release, 91 92 .gem_close_object = i915_gem_close_object, 93 .gem_free_object_unlocked = i915_gem_free_object, 94 }; 95 96 static void release_dev(struct device *dev) 97 { 98 struct pci_dev *pdev = to_pci_dev(dev); 99 100 kfree(pdev); 101 } 102 103 static void mock_retire_work_handler(struct work_struct *work) 104 { 105 } 106 107 static void mock_idle_work_handler(struct work_struct *work) 108 { 109 } 110 111 struct drm_i915_private *mock_gem_device(void) 112 { 113 struct drm_i915_private *i915; 114 struct intel_engine_cs *engine; 115 enum intel_engine_id id; 116 struct pci_dev *pdev; 117 int err; 118 119 pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL); 120 if (!pdev) 121 goto err; 122 123 device_initialize(&pdev->dev); 124 pdev->class = PCI_BASE_CLASS_DISPLAY << 16; 125 pdev->dev.release = release_dev; 126 dev_set_name(&pdev->dev, "mock"); 127 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 128 129 pm_runtime_dont_use_autosuspend(&pdev->dev); 130 pm_runtime_get_sync(&pdev->dev); 131 132 i915 = (struct drm_i915_private *)(pdev + 1); 133 pci_set_drvdata(pdev, i915); 134 135 err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); 136 if (err) { 137 pr_err("Failed to initialise mock GEM device: err=%d\n", err); 138 goto put_device; 139 } 140 i915->drm.pdev = pdev; 141 i915->drm.dev_private = i915; 142 143 /* Using the global GTT may ask questions about KMS users, so prepare */ 144 drm_mode_config_init(&i915->drm); 145 146 mkwrite_device_info(i915)->gen = -1; 147 148 spin_lock_init(&i915->mm.object_stat_lock); 149 mock_uncore_init(i915); 150 151 init_waitqueue_head(&i915->gpu_error.wait_queue); 152 init_waitqueue_head(&i915->gpu_error.reset_queue); 153 154 i915->wq = alloc_ordered_workqueue("mock", 0); 155 if (!i915->wq) 156 goto put_device; 157 158 INIT_WORK(&i915->mm.free_work, __i915_gem_free_work); 159 init_llist_head(&i915->mm.free_list); 160 INIT_LIST_HEAD(&i915->mm.unbound_list); 161 INIT_LIST_HEAD(&i915->mm.bound_list); 162 163 ida_init(&i915->context_hw_ida); 164 165 INIT_DELAYED_WORK(&i915->gt.retire_work, mock_retire_work_handler); 166 INIT_DELAYED_WORK(&i915->gt.idle_work, mock_idle_work_handler); 167 168 i915->gt.awake = true; 169 170 i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN); 171 if (!i915->objects) 172 goto err_wq; 173 174 i915->vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN); 175 if (!i915->vmas) 176 goto err_objects; 177 178 i915->requests = KMEM_CACHE(mock_request, 179 SLAB_HWCACHE_ALIGN | 180 SLAB_RECLAIM_ACCOUNT | 181 SLAB_TYPESAFE_BY_RCU); 182 if (!i915->requests) 183 goto err_vmas; 184 185 i915->dependencies = KMEM_CACHE(i915_dependency, 186 SLAB_HWCACHE_ALIGN | 187 SLAB_RECLAIM_ACCOUNT); 188 if (!i915->dependencies) 189 goto err_requests; 190 191 i915->priorities = KMEM_CACHE(i915_priolist, SLAB_HWCACHE_ALIGN); 192 if (!i915->priorities) 193 goto err_dependencies; 194 195 mutex_lock(&i915->drm.struct_mutex); 196 INIT_LIST_HEAD(&i915->gt.timelines); 197 err = i915_gem_timeline_init__global(i915); 198 if (err) { 199 mutex_unlock(&i915->drm.struct_mutex); 200 goto err_priorities; 201 } 202 203 mock_init_ggtt(i915); 204 mutex_unlock(&i915->drm.struct_mutex); 205 206 mkwrite_device_info(i915)->ring_mask = BIT(0); 207 i915->engine[RCS] = mock_engine(i915, "mock"); 208 if (!i915->engine[RCS]) 209 goto err_dependencies; 210 211 i915->kernel_context = mock_context(i915, NULL); 212 if (!i915->kernel_context) 213 goto err_engine; 214 215 return i915; 216 217 err_engine: 218 for_each_engine(engine, i915, id) 219 mock_engine_free(engine); 220 err_priorities: 221 kmem_cache_destroy(i915->priorities); 222 err_dependencies: 223 kmem_cache_destroy(i915->dependencies); 224 err_requests: 225 kmem_cache_destroy(i915->requests); 226 err_vmas: 227 kmem_cache_destroy(i915->vmas); 228 err_objects: 229 kmem_cache_destroy(i915->objects); 230 err_wq: 231 destroy_workqueue(i915->wq); 232 put_device: 233 put_device(&pdev->dev); 234 err: 235 return NULL; 236 } 237