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