summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/i915/selftests/mock_gem_device.c
blob: fff11c90f1fa599f444fc16edb9976e2e1271743 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
/*
 * 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.
 *
 */

#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/iommu.h>

#include <drm/drm_managed.h>

#include "gt/intel_gt.h"
#include "gt/intel_gt_requests.h"
#include "gt/mock_engine.h"
#include "intel_memory_region.h"
#include "intel_region_ttm.h"

#include "mock_request.h"
#include "mock_gem_device.h"
#include "mock_gtt.h"
#include "mock_uncore.h"
#include "mock_region.h"

#include "gem/selftests/mock_context.h"
#include "gem/selftests/mock_gem_object.h"

void mock_device_flush(struct drm_i915_private *i915)
{
	struct intel_gt *gt = to_gt(i915);
	struct intel_engine_cs *engine;
	enum intel_engine_id id;

	do {
		for_each_engine(engine, gt, id)
			mock_engine_flush(engine);
	} while (intel_gt_retire_requests_timeout(gt, MAX_SCHEDULE_TIMEOUT,
						  NULL));
}

static void mock_device_release(struct drm_device *dev)
{
	struct drm_i915_private *i915 = to_i915(dev);

	if (!i915->do_release)
		goto out;

	mock_device_flush(i915);
	intel_gt_driver_remove(to_gt(i915));

	i915_gem_drain_workqueue(i915);
	i915_gem_drain_freed_objects(i915);

	mock_fini_ggtt(to_gt(i915)->ggtt);
	destroy_workqueue(i915->wq);

	intel_region_ttm_device_fini(i915);
	intel_gt_driver_late_release_all(i915);
	intel_memory_regions_driver_release(i915);

	drm_mode_config_cleanup(&i915->drm);

out:
	i915_params_free(&i915->params);
}

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

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

	kfree(pdev);
}

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,
	},
};

static void mock_gt_probe(struct drm_i915_private *i915)
{
	i915->gt[0] = &i915->gt0;
	i915->gt[0]->name = "Mock GT";
}

struct drm_i915_private *mock_gem_device(void)
{
#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
	static struct dev_iommu fake_iommu = { .priv = (void *)-1 };
#endif
	struct drm_i915_private *i915;
	struct pci_dev *pdev;
	int ret;

	pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
	if (!pdev)
		return NULL;
	device_initialize(&pdev->dev);
	pdev->class = PCI_BASE_CLASS_DISPLAY << 16;
	pdev->dev.release = release_dev;
	dev_set_name(&pdev->dev, "mock");
	dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));

#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
	/* HACK to disable iommu for the fake device; force identity mapping */
	pdev->dev.iommu = &fake_iommu;
#endif
	if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
		put_device(&pdev->dev);
		return NULL;
	}

	i915 = devm_drm_dev_alloc(&pdev->dev, &mock_driver,
				  struct drm_i915_private, drm);
	if (IS_ERR(i915)) {
		pr_err("Failed to allocate mock GEM device: err=%ld\n", PTR_ERR(i915));
		devres_release_group(&pdev->dev, NULL);
		put_device(&pdev->dev);

		return NULL;
	}

	pci_set_drvdata(pdev, i915);

	dev_pm_domain_set(&pdev->dev, &pm_domain);
	pm_runtime_enable(&pdev->dev);
	pm_runtime_dont_use_autosuspend(&pdev->dev);
	if (pm_runtime_enabled(&pdev->dev))
		WARN_ON(pm_runtime_get_sync(&pdev->dev));


	i915_params_copy(&i915->params, &i915_modparams);

	intel_runtime_pm_init_early(&i915->runtime_pm);
	/* wakeref tracking has significant overhead */
	i915->runtime_pm.no_wakeref_tracking = true;

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

	RUNTIME_INFO(i915)->graphics.ip.ver = -1;

	RUNTIME_INFO(i915)->page_sizes =
		I915_GTT_PAGE_SIZE_4K |
		I915_GTT_PAGE_SIZE_64K |
		I915_GTT_PAGE_SIZE_2M;

	RUNTIME_INFO(i915)->memory_regions = REGION_SMEM;
	intel_memory_regions_hw_probe(i915);

	spin_lock_init(&i915->gpu_error.lock);

	i915_gem_init__mm(i915);
	intel_root_gt_init_early(i915);
	mock_uncore_init(&i915->uncore, i915);
	atomic_inc(&to_gt(i915)->wakeref.count); /* disable; no hw support */
	to_gt(i915)->awake = -ENODEV;
	mock_gt_probe(i915);

	ret = intel_region_ttm_device_init(i915);
	if (ret)
		goto err_ttm;

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

	mock_init_contexts(i915);

	/* allocate the ggtt */
	ret = intel_gt_assign_ggtt(to_gt(i915));
	if (ret)
		goto err_unlock;

	mock_init_ggtt(to_gt(i915));
	to_gt(i915)->vm = i915_vm_get(&to_gt(i915)->ggtt->vm);

	RUNTIME_INFO(i915)->platform_engine_mask = BIT(0);
	to_gt(i915)->info.engine_mask = BIT(0);

	to_gt(i915)->engine[RCS0] = mock_engine(i915, "mock", RCS0);
	if (!to_gt(i915)->engine[RCS0])
		goto err_unlock;

	if (mock_engine_init(to_gt(i915)->engine[RCS0]))
		goto err_context;

	__clear_bit(I915_WEDGED, &to_gt(i915)->reset.flags);
	intel_engines_driver_register(i915);

	i915->do_release = true;
	ida_init(&i915->selftest.mock_region_instances);

	return i915;

err_context:
	intel_gt_driver_remove(to_gt(i915));
err_unlock:
	destroy_workqueue(i915->wq);
err_drv:
	intel_region_ttm_device_fini(i915);
err_ttm:
	intel_gt_driver_late_release_all(i915);
	intel_memory_regions_driver_release(i915);
	drm_mode_config_cleanup(&i915->drm);
	mock_destroy_device(i915);

	return NULL;
}

void mock_destroy_device(struct drm_i915_private *i915)
{
	struct device *dev = i915->drm.dev;

	devres_release_group(dev, NULL);
	put_device(dev);
}