drivers/gpu/drm/i915/selftests/mock_gem_device.c

   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 }