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 <drm/drm_managed.h> 29 30 #include "gt/intel_gt.h" 31 #include "gt/intel_gt_requests.h" 32 #include "gt/mock_engine.h" 33 #include "intel_memory_region.h" 34 35 #include "mock_request.h" 36 #include "mock_gem_device.h" 37 #include "mock_gtt.h" 38 #include "mock_uncore.h" 39 #include "mock_region.h" 40 41 #include "gem/selftests/mock_context.h" 42 #include "gem/selftests/mock_gem_object.h" 43 44 void mock_device_flush(struct drm_i915_private *i915) 45 { 46 struct intel_gt *gt = &i915->gt; 47 struct intel_engine_cs *engine; 48 enum intel_engine_id id; 49 50 do { 51 for_each_engine(engine, gt, id) 52 mock_engine_flush(engine); 53 } while (intel_gt_retire_requests_timeout(gt, MAX_SCHEDULE_TIMEOUT)); 54 } 55 56 static void mock_device_release(struct drm_device *dev) 57 { 58 struct drm_i915_private *i915 = to_i915(dev); 59 60 if (!i915->do_release) 61 goto out; 62 63 mock_device_flush(i915); 64 intel_gt_driver_remove(&i915->gt); 65 66 i915_gem_driver_release__contexts(i915); 67 68 i915_gem_drain_workqueue(i915); 69 i915_gem_drain_freed_objects(i915); 70 71 mock_fini_ggtt(&i915->ggtt); 72 destroy_workqueue(i915->wq); 73 74 intel_gt_driver_late_release(&i915->gt); 75 intel_memory_regions_driver_release(i915); 76 77 drm_mode_config_cleanup(&i915->drm); 78 79 out: 80 put_device(&i915->drm.pdev->dev); 81 i915->drm.pdev = NULL; 82 } 83 84 static struct drm_driver mock_driver = { 85 .name = "mock", 86 .driver_features = DRIVER_GEM, 87 .release = mock_device_release, 88 89 .gem_close_object = i915_gem_close_object, 90 .gem_free_object_unlocked = i915_gem_free_object, 91 }; 92 93 static void release_dev(struct device *dev) 94 { 95 struct pci_dev *pdev = to_pci_dev(dev); 96 97 kfree(pdev); 98 } 99 100 static int pm_domain_resume(struct device *dev) 101 { 102 return pm_generic_runtime_resume(dev); 103 } 104 105 static int pm_domain_suspend(struct device *dev) 106 { 107 return pm_generic_runtime_suspend(dev); 108 } 109 110 static struct dev_pm_domain pm_domain = { 111 .ops = { 112 .runtime_suspend = pm_domain_suspend, 113 .runtime_resume = pm_domain_resume, 114 }, 115 }; 116 117 struct drm_i915_private *mock_gem_device(void) 118 { 119 struct drm_i915_private *i915; 120 struct pci_dev *pdev; 121 int err; 122 123 pdev = kzalloc(sizeof(*pdev), GFP_KERNEL); 124 if (!pdev) 125 return NULL; 126 i915 = kzalloc(sizeof(*i915), GFP_KERNEL); 127 if (!i915) { 128 kfree(pdev); 129 return NULL; 130 } 131 132 device_initialize(&pdev->dev); 133 pdev->class = PCI_BASE_CLASS_DISPLAY << 16; 134 pdev->dev.release = release_dev; 135 dev_set_name(&pdev->dev, "mock"); 136 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 137 138 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU) 139 /* hack to disable iommu for the fake device; force identity mapping */ 140 pdev->dev.archdata.iommu = (void *)-1; 141 #endif 142 143 pci_set_drvdata(pdev, i915); 144 145 dev_pm_domain_set(&pdev->dev, &pm_domain); 146 pm_runtime_enable(&pdev->dev); 147 pm_runtime_dont_use_autosuspend(&pdev->dev); 148 if (pm_runtime_enabled(&pdev->dev)) 149 WARN_ON(pm_runtime_get_sync(&pdev->dev)); 150 151 err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); 152 if (err) { 153 pr_err("Failed to initialise mock GEM device: err=%d\n", err); 154 put_device(&pdev->dev); 155 kfree(i915); 156 157 return NULL; 158 } 159 i915->drm.pdev = pdev; 160 drmm_add_final_kfree(&i915->drm, i915); 161 162 intel_runtime_pm_init_early(&i915->runtime_pm); 163 164 /* Using the global GTT may ask questions about KMS users, so prepare */ 165 drm_mode_config_init(&i915->drm); 166 167 mkwrite_device_info(i915)->gen = -1; 168 169 mkwrite_device_info(i915)->page_sizes = 170 I915_GTT_PAGE_SIZE_4K | 171 I915_GTT_PAGE_SIZE_64K | 172 I915_GTT_PAGE_SIZE_2M; 173 174 mkwrite_device_info(i915)->memory_regions = REGION_SMEM; 175 intel_memory_regions_hw_probe(i915); 176 177 mock_uncore_init(&i915->uncore, i915); 178 179 i915_gem_init__mm(i915); 180 intel_gt_init_early(&i915->gt, i915); 181 atomic_inc(&i915->gt.wakeref.count); /* disable; no hw support */ 182 i915->gt.awake = -ENODEV; 183 184 i915->wq = alloc_ordered_workqueue("mock", 0); 185 if (!i915->wq) 186 goto err_drv; 187 188 mock_init_contexts(i915); 189 190 mock_init_ggtt(i915, &i915->ggtt); 191 i915->gt.vm = i915_vm_get(&i915->ggtt.vm); 192 193 mkwrite_device_info(i915)->engine_mask = BIT(0); 194 195 i915->gt.engine[RCS0] = mock_engine(i915, "mock", RCS0); 196 if (!i915->gt.engine[RCS0]) 197 goto err_unlock; 198 199 if (mock_engine_init(i915->gt.engine[RCS0])) 200 goto err_context; 201 202 __clear_bit(I915_WEDGED, &i915->gt.reset.flags); 203 intel_engines_driver_register(i915); 204 205 i915->do_release = true; 206 207 return i915; 208 209 err_context: 210 intel_gt_driver_remove(&i915->gt); 211 err_unlock: 212 destroy_workqueue(i915->wq); 213 err_drv: 214 intel_gt_driver_late_release(&i915->gt); 215 intel_memory_regions_driver_release(i915); 216 drm_mode_config_cleanup(&i915->drm); 217 drm_dev_put(&i915->drm); 218 219 return NULL; 220 } 221