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 "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_gem_retire_requests(i915);
  47 }
  48
  49 static void mock_device_release(struct drm_device *dev)
  50 {
  51         struct drm_i915_private *i915 = to_i915(dev);
  52         struct intel_engine_cs *engine;
  53         enum intel_engine_id id;
  54
  55         mutex_lock(&i915->drm.struct_mutex);
  56         mock_device_flush(i915);
  57         i915_gem_contexts_lost(i915);
  58         mutex_unlock(&i915->drm.struct_mutex);
  59
  60         cancel_delayed_work_sync(&i915->gt.retire_work);
  61         cancel_delayed_work_sync(&i915->gt.idle_work);
  62         i915_gem_drain_workqueue(i915);
  63
  64         mutex_lock(&i915->drm.struct_mutex);
  65         for_each_engine(engine, i915, id)
  66                 mock_engine_free(engine);
  67         i915_gem_contexts_fini(i915);
  68         mutex_unlock(&i915->drm.struct_mutex);
  69
  70         drain_workqueue(i915->wq);
  71         i915_gem_drain_freed_objects(i915);
  72
  73         mutex_lock(&i915->drm.struct_mutex);
  74         mock_fini_ggtt(i915);
  75         i915_gem_timeline_fini(&i915->gt.global_timeline);
  76         mutex_unlock(&i915->drm.struct_mutex);
  77
  78         destroy_workqueue(i915->wq);
  79
  80         kmem_cache_destroy(i915->priorities);
  81         kmem_cache_destroy(i915->dependencies);
  82         kmem_cache_destroy(i915->requests);
  83         kmem_cache_destroy(i915->vmas);
  84         kmem_cache_destroy(i915->objects);
  85
  86         drm_dev_fini(&i915->drm);
  87         put_device(&i915->drm.pdev->dev);
  88 }
  89
  90 static struct drm_driver mock_driver = {
  91         .name = "mock",
  92         .driver_features = DRIVER_GEM,
  93         .release = mock_device_release,
  94
  95         .gem_close_object = i915_gem_close_object,
  96         .gem_free_object_unlocked = i915_gem_free_object,
  97 };
  98
  99 static void release_dev(struct device *dev)
 100 {
 101         struct pci_dev *pdev = to_pci_dev(dev);
 102
 103         kfree(pdev);
 104 }
 105
 106 static void mock_retire_work_handler(struct work_struct *work)
 107 {
 108 }
 109
 110 static void mock_idle_work_handler(struct work_struct *work)
 111 {
 112 }
 113
 114 static int pm_domain_resume(struct device *dev)
 115 {
 116         return pm_generic_runtime_resume(dev);
 117 }
 118
 119 static int pm_domain_suspend(struct device *dev)
 120 {
 121         return pm_generic_runtime_suspend(dev);
 122 }
 123
 124 static struct dev_pm_domain pm_domain = {
 125         .ops = {
 126                 .runtime_suspend = pm_domain_suspend,
 127                 .runtime_resume = pm_domain_resume,
 128         },
 129 };
 130
 131 struct drm_i915_private *mock_gem_device(void)
 132 {
 133         struct drm_i915_private *i915;
 134         struct intel_engine_cs *engine;
 135         enum intel_engine_id id;
 136         struct pci_dev *pdev;
 137         int err;
 138
 139         pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL);
 140         if (!pdev)
 141                 goto err;
 142
 143         device_initialize(&pdev->dev);
 144         pdev->class = PCI_BASE_CLASS_DISPLAY << 16;
 145         pdev->dev.release = release_dev;
 146         dev_set_name(&pdev->dev, "mock");
 147         dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 148
 149         dev_pm_domain_set(&pdev->dev, &pm_domain);
 150         pm_runtime_enable(&pdev->dev);
 151         pm_runtime_dont_use_autosuspend(&pdev->dev);
 152         WARN_ON(pm_runtime_get_sync(&pdev->dev));
 153
 154         i915 = (struct drm_i915_private *)(pdev + 1);
 155         pci_set_drvdata(pdev, i915);
 156
 157         err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev);
 158         if (err) {
 159                 pr_err("Failed to initialise mock GEM device: err=%d\n", err);
 160                 goto put_device;
 161         }
 162         i915->drm.pdev = pdev;
 163         i915->drm.dev_private = i915;
 164
 165         /* Using the global GTT may ask questions about KMS users, so prepare */
 166         drm_mode_config_init(&i915->drm);
 167
 168         mkwrite_device_info(i915)->gen = -1;
 169
 170         spin_lock_init(&i915->mm.object_stat_lock);
 171         mock_uncore_init(i915);
 172
 173         init_waitqueue_head(&i915->gpu_error.wait_queue);
 174         init_waitqueue_head(&i915->gpu_error.reset_queue);
 175
 176         i915->wq = alloc_ordered_workqueue("mock", 0);
 177         if (!i915->wq)
 178                 goto put_device;
 179
 180         INIT_WORK(&i915->mm.free_work, __i915_gem_free_work);
 181         init_llist_head(&i915->mm.free_list);
 182         INIT_LIST_HEAD(&i915->mm.unbound_list);
 183         INIT_LIST_HEAD(&i915->mm.bound_list);
 184
 185         mock_init_contexts(i915);
 186
 187         INIT_DELAYED_WORK(&i915->gt.retire_work, mock_retire_work_handler);
 188         INIT_DELAYED_WORK(&i915->gt.idle_work, mock_idle_work_handler);
 189
 190         i915->gt.awake = true;
 191
 192         i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN);
 193         if (!i915->objects)
 194                 goto err_wq;
 195
 196         i915->vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN);
 197         if (!i915->vmas)
 198                 goto err_objects;
 199
 200         i915->requests = KMEM_CACHE(mock_request,
 201                                     SLAB_HWCACHE_ALIGN |
 202                                     SLAB_RECLAIM_ACCOUNT |
 203                                     SLAB_TYPESAFE_BY_RCU);
 204         if (!i915->requests)
 205                 goto err_vmas;
 206
 207         i915->dependencies = KMEM_CACHE(i915_dependency,
 208                                         SLAB_HWCACHE_ALIGN |
 209                                         SLAB_RECLAIM_ACCOUNT);
 210         if (!i915->dependencies)
 211                 goto err_requests;
 212
 213         i915->priorities = KMEM_CACHE(i915_priolist, SLAB_HWCACHE_ALIGN);
 214         if (!i915->priorities)
 215                 goto err_dependencies;
 216
 217         mutex_lock(&i915->drm.struct_mutex);
 218         INIT_LIST_HEAD(&i915->gt.timelines);
 219         err = i915_gem_timeline_init__global(i915);
 220         if (err) {
 221                 mutex_unlock(&i915->drm.struct_mutex);
 222                 goto err_priorities;
 223         }
 224
 225         mock_init_ggtt(i915);
 226         mutex_unlock(&i915->drm.struct_mutex);
 227
 228         mkwrite_device_info(i915)->ring_mask = BIT(0);
 229         i915->engine[RCS] = mock_engine(i915, "mock", RCS);
 230         if (!i915->engine[RCS])
 231                 goto err_priorities;
 232
 233         i915->kernel_context = mock_context(i915, NULL);
 234         if (!i915->kernel_context)
 235                 goto err_engine;
 236
 237         return i915;
 238
 239 err_engine:
 240         for_each_engine(engine, i915, id)
 241                 mock_engine_free(engine);
 242 err_priorities:
 243         kmem_cache_destroy(i915->priorities);
 244 err_dependencies:
 245         kmem_cache_destroy(i915->dependencies);
 246 err_requests:
 247         kmem_cache_destroy(i915->requests);
 248 err_vmas:
 249         kmem_cache_destroy(i915->vmas);
 250 err_objects:
 251         kmem_cache_destroy(i915->objects);
 252 err_wq:
 253         destroy_workqueue(i915->wq);
 254 put_device:
 255         put_device(&pdev->dev);
 256 err:
 257         return NULL;
 258 }