mock_gem_device.c 7.0 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/*
 * Copyright © 2016 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 */

25
#include <linux/pm_domain.h>
26 27
#include <linux/pm_runtime.h>

28 29 30
#include "mock_engine.h"
#include "mock_context.h"
#include "mock_request.h"
31 32
#include "mock_gem_device.h"
#include "mock_gem_object.h"
33
#include "mock_gtt.h"
34
#include "mock_uncore.h"
35

36 37 38 39 40 41 42 43 44 45 46 47 48
void mock_device_flush(struct drm_i915_private *i915)
{
	struct intel_engine_cs *engine;
	enum intel_engine_id id;

	lockdep_assert_held(&i915->drm.struct_mutex);

	for_each_engine(engine, i915, id)
		mock_engine_flush(engine);

	i915_gem_retire_requests(i915);
}

49 50 51
static void mock_device_release(struct drm_device *dev)
{
	struct drm_i915_private *i915 = to_i915(dev);
52 53 54 55 56
	struct intel_engine_cs *engine;
	enum intel_engine_id id;

	mutex_lock(&i915->drm.struct_mutex);
	mock_device_flush(i915);
57
	i915_gem_contexts_lost(i915);
58
	mutex_unlock(&i915->drm.struct_mutex);
59

60 61
	cancel_delayed_work_sync(&i915->gt.retire_work);
	cancel_delayed_work_sync(&i915->gt.idle_work);
62
	i915_gem_drain_workqueue(i915);
63 64 65 66

	mutex_lock(&i915->drm.struct_mutex);
	for_each_engine(engine, i915, id)
		mock_engine_free(engine);
67
	i915_gem_contexts_fini(i915);
68 69 70
	mutex_unlock(&i915->drm.struct_mutex);

	drain_workqueue(i915->wq);
71 72
	i915_gem_drain_freed_objects(i915);

73 74 75 76 77
	mutex_lock(&i915->drm.struct_mutex);
	mock_fini_ggtt(i915);
	i915_gem_timeline_fini(&i915->gt.global_timeline);
	mutex_unlock(&i915->drm.struct_mutex);

78 79
	destroy_workqueue(i915->wq);

80
	kmem_cache_destroy(i915->priorities);
81 82
	kmem_cache_destroy(i915->dependencies);
	kmem_cache_destroy(i915->requests);
83
	kmem_cache_destroy(i915->vmas);
84 85
	kmem_cache_destroy(i915->objects);

M
Matthew Auld 已提交
86 87
	i915_gemfs_fini(i915);

88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107
	drm_dev_fini(&i915->drm);
	put_device(&i915->drm.pdev->dev);
}

static struct drm_driver mock_driver = {
	.name = "mock",
	.driver_features = DRIVER_GEM,
	.release = mock_device_release,

	.gem_close_object = i915_gem_close_object,
	.gem_free_object_unlocked = i915_gem_free_object,
};

static void release_dev(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);

	kfree(pdev);
}

108 109 110 111 112 113 114 115
static void mock_retire_work_handler(struct work_struct *work)
{
}

static void mock_idle_work_handler(struct work_struct *work)
{
}

116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132
static int pm_domain_resume(struct device *dev)
{
	return pm_generic_runtime_resume(dev);
}

static int pm_domain_suspend(struct device *dev)
{
	return pm_generic_runtime_suspend(dev);
}

static struct dev_pm_domain pm_domain = {
	.ops = {
		.runtime_suspend = pm_domain_suspend,
		.runtime_resume = pm_domain_resume,
	},
};

133 134 135
struct drm_i915_private *mock_gem_device(void)
{
	struct drm_i915_private *i915;
136 137
	struct intel_engine_cs *engine;
	enum intel_engine_id id;
138 139 140 141 142 143 144 145
	struct pci_dev *pdev;
	int err;

	pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL);
	if (!pdev)
		goto err;

	device_initialize(&pdev->dev);
146
	pdev->class = PCI_BASE_CLASS_DISPLAY << 16;
147 148 149 150
	pdev->dev.release = release_dev;
	dev_set_name(&pdev->dev, "mock");
	dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));

151
#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
152 153
	/* hack to disable iommu for the fake device; force identity mapping */
	pdev->dev.archdata.iommu = (void *)-1;
154
#endif
155

156 157
	dev_pm_domain_set(&pdev->dev, &pm_domain);
	pm_runtime_enable(&pdev->dev);
158
	pm_runtime_dont_use_autosuspend(&pdev->dev);
159
	WARN_ON(pm_runtime_get_sync(&pdev->dev));
160 161 162 163 164 165 166 167 168 169 170 171

	i915 = (struct drm_i915_private *)(pdev + 1);
	pci_set_drvdata(pdev, i915);

	err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev);
	if (err) {
		pr_err("Failed to initialise mock GEM device: err=%d\n", err);
		goto put_device;
	}
	i915->drm.pdev = pdev;
	i915->drm.dev_private = i915;

172 173 174
	/* Using the global GTT may ask questions about KMS users, so prepare */
	drm_mode_config_init(&i915->drm);

175 176
	mkwrite_device_info(i915)->gen = -1;

177
	mkwrite_device_info(i915)->page_sizes =
178
		I915_GTT_PAGE_SIZE_4K |
179 180
		I915_GTT_PAGE_SIZE_64K |
		I915_GTT_PAGE_SIZE_2M;
181

182
	mock_uncore_init(i915);
183
	i915_gem_init__mm(i915);
184

185 186 187 188 189 190 191
	init_waitqueue_head(&i915->gpu_error.wait_queue);
	init_waitqueue_head(&i915->gpu_error.reset_queue);

	i915->wq = alloc_ordered_workqueue("mock", 0);
	if (!i915->wq)
		goto put_device;

192
	mock_init_contexts(i915);
193 194 195 196 197 198

	INIT_DELAYED_WORK(&i915->gt.retire_work, mock_retire_work_handler);
	INIT_DELAYED_WORK(&i915->gt.idle_work, mock_idle_work_handler);

	i915->gt.awake = true;

199 200
	i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN);
	if (!i915->objects)
201
		goto err_wq;
202

203 204 205 206
	i915->vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN);
	if (!i915->vmas)
		goto err_objects;

207 208 209
	i915->requests = KMEM_CACHE(mock_request,
				    SLAB_HWCACHE_ALIGN |
				    SLAB_RECLAIM_ACCOUNT |
210
				    SLAB_TYPESAFE_BY_RCU);
211 212 213 214 215 216 217 218 219
	if (!i915->requests)
		goto err_vmas;

	i915->dependencies = KMEM_CACHE(i915_dependency,
					SLAB_HWCACHE_ALIGN |
					SLAB_RECLAIM_ACCOUNT);
	if (!i915->dependencies)
		goto err_requests;

220 221 222 223
	i915->priorities = KMEM_CACHE(i915_priolist, SLAB_HWCACHE_ALIGN);
	if (!i915->priorities)
		goto err_dependencies;

224 225 226 227 228
	mutex_lock(&i915->drm.struct_mutex);
	INIT_LIST_HEAD(&i915->gt.timelines);
	err = i915_gem_timeline_init__global(i915);
	if (err) {
		mutex_unlock(&i915->drm.struct_mutex);
229
		goto err_priorities;
230 231 232 233 234
	}

	mock_init_ggtt(i915);
	mutex_unlock(&i915->drm.struct_mutex);

235
	mkwrite_device_info(i915)->ring_mask = BIT(0);
236
	i915->engine[RCS] = mock_engine(i915, "mock", RCS);
237
	if (!i915->engine[RCS])
238
		goto err_priorities;
239 240 241 242 243

	i915->kernel_context = mock_context(i915, NULL);
	if (!i915->kernel_context)
		goto err_engine;

244 245 246 247
	i915->preempt_context = mock_context(i915, NULL);
	if (!i915->preempt_context)
		goto err_kernel_context;

M
Matthew Auld 已提交
248 249
	WARN_ON(i915_gemfs_init(i915));

250 251
	return i915;

252 253
err_kernel_context:
	i915_gem_context_put(i915->kernel_context);
254 255 256
err_engine:
	for_each_engine(engine, i915, id)
		mock_engine_free(engine);
257 258
err_priorities:
	kmem_cache_destroy(i915->priorities);
259 260 261 262
err_dependencies:
	kmem_cache_destroy(i915->dependencies);
err_requests:
	kmem_cache_destroy(i915->requests);
263 264 265 266
err_vmas:
	kmem_cache_destroy(i915->vmas);
err_objects:
	kmem_cache_destroy(i915->objects);
267 268
err_wq:
	destroy_workqueue(i915->wq);
269 270 271 272 273
put_device:
	put_device(&pdev->dev);
err:
	return NULL;
}