]> Git Repo - linux.git/blob - drivers/gpu/drm/i915/selftests/mock_gem_device.c
Merge tag 'amd-drm-next-6.5-2023-06-09' of https://gitlab.freedesktop.org/agd5f/linux...
[linux.git] / 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 #include <linux/iommu.h>
28
29 #include <drm/drm_managed.h>
30
31 #include "gt/intel_gt.h"
32 #include "gt/intel_gt_requests.h"
33 #include "gt/mock_engine.h"
34 #include "intel_memory_region.h"
35 #include "intel_region_ttm.h"
36
37 #include "mock_request.h"
38 #include "mock_gem_device.h"
39 #include "mock_gtt.h"
40 #include "mock_uncore.h"
41 #include "mock_region.h"
42
43 #include "gem/selftests/mock_context.h"
44 #include "gem/selftests/mock_gem_object.h"
45
46 void mock_device_flush(struct drm_i915_private *i915)
47 {
48         struct intel_gt *gt = to_gt(i915);
49         struct intel_engine_cs *engine;
50         enum intel_engine_id id;
51
52         do {
53                 for_each_engine(engine, gt, id)
54                         mock_engine_flush(engine);
55         } while (intel_gt_retire_requests_timeout(gt, MAX_SCHEDULE_TIMEOUT,
56                                                   NULL));
57 }
58
59 static void mock_device_release(struct drm_device *dev)
60 {
61         struct drm_i915_private *i915 = to_i915(dev);
62
63         if (!i915->do_release)
64                 goto out;
65
66         mock_device_flush(i915);
67         intel_gt_driver_remove(to_gt(i915));
68
69         i915_gem_drain_workqueue(i915);
70
71         mock_fini_ggtt(to_gt(i915)->ggtt);
72         destroy_workqueue(i915->wq);
73
74         intel_region_ttm_device_fini(i915);
75         intel_gt_driver_late_release_all(i915);
76         intel_memory_regions_driver_release(i915);
77
78         drm_mode_config_cleanup(&i915->drm);
79
80 out:
81         i915_params_free(&i915->params);
82 }
83
84 static const struct drm_driver mock_driver = {
85         .name = "mock",
86         .driver_features = DRIVER_GEM,
87         .release = mock_device_release,
88 };
89
90 static void release_dev(struct device *dev)
91 {
92         struct pci_dev *pdev = to_pci_dev(dev);
93
94         kfree(pdev);
95 }
96
97 static int pm_domain_resume(struct device *dev)
98 {
99         return pm_generic_runtime_resume(dev);
100 }
101
102 static int pm_domain_suspend(struct device *dev)
103 {
104         return pm_generic_runtime_suspend(dev);
105 }
106
107 static struct dev_pm_domain pm_domain = {
108         .ops = {
109                 .runtime_suspend = pm_domain_suspend,
110                 .runtime_resume = pm_domain_resume,
111         },
112 };
113
114 static void mock_gt_probe(struct drm_i915_private *i915)
115 {
116         i915->gt[0] = &i915->gt0;
117         i915->gt[0]->name = "Mock GT";
118 }
119
120 struct drm_i915_private *mock_gem_device(void)
121 {
122 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
123         static struct dev_iommu fake_iommu = { .priv = (void *)-1 };
124 #endif
125         struct drm_i915_private *i915;
126         struct intel_device_info *i915_info;
127         struct pci_dev *pdev;
128         unsigned int i;
129         int ret;
130
131         pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
132         if (!pdev)
133                 return NULL;
134         device_initialize(&pdev->dev);
135         pdev->class = PCI_BASE_CLASS_DISPLAY << 16;
136         pdev->dev.release = release_dev;
137         dev_set_name(&pdev->dev, "mock");
138         dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
139
140 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
141         /* HACK to disable iommu for the fake device; force identity mapping */
142         pdev->dev.iommu = &fake_iommu;
143 #endif
144         if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
145                 put_device(&pdev->dev);
146                 return NULL;
147         }
148
149         i915 = devm_drm_dev_alloc(&pdev->dev, &mock_driver,
150                                   struct drm_i915_private, drm);
151         if (IS_ERR(i915)) {
152                 pr_err("Failed to allocate mock GEM device: err=%ld\n", PTR_ERR(i915));
153                 devres_release_group(&pdev->dev, NULL);
154                 put_device(&pdev->dev);
155
156                 return NULL;
157         }
158
159         pci_set_drvdata(pdev, i915);
160
161         dev_pm_domain_set(&pdev->dev, &pm_domain);
162         pm_runtime_enable(&pdev->dev);
163         pm_runtime_dont_use_autosuspend(&pdev->dev);
164         if (pm_runtime_enabled(&pdev->dev))
165                 WARN_ON(pm_runtime_get_sync(&pdev->dev));
166
167
168         i915_params_copy(&i915->params, &i915_modparams);
169
170         intel_runtime_pm_init_early(&i915->runtime_pm);
171         /* wakeref tracking has significant overhead */
172         i915->runtime_pm.no_wakeref_tracking = true;
173
174         /* Using the global GTT may ask questions about KMS users, so prepare */
175         drm_mode_config_init(&i915->drm);
176
177         RUNTIME_INFO(i915)->graphics.ip.ver = -1;
178
179         RUNTIME_INFO(i915)->page_sizes =
180                 I915_GTT_PAGE_SIZE_4K |
181                 I915_GTT_PAGE_SIZE_64K |
182                 I915_GTT_PAGE_SIZE_2M;
183
184         RUNTIME_INFO(i915)->memory_regions = REGION_SMEM;
185
186         /* simply use legacy cache level for mock device */
187         i915_info = (struct intel_device_info *)INTEL_INFO(i915);
188         i915_info->max_pat_index = 3;
189         for (i = 0; i < I915_MAX_CACHE_LEVEL; i++)
190                 i915_info->cachelevel_to_pat[i] = i;
191
192         intel_memory_regions_hw_probe(i915);
193
194         spin_lock_init(&i915->gpu_error.lock);
195
196         i915_gem_init__mm(i915);
197         intel_root_gt_init_early(i915);
198         mock_uncore_init(&i915->uncore, i915);
199         atomic_inc(&to_gt(i915)->wakeref.count); /* disable; no hw support */
200         to_gt(i915)->awake = -ENODEV;
201         mock_gt_probe(i915);
202
203         ret = intel_region_ttm_device_init(i915);
204         if (ret)
205                 goto err_ttm;
206
207         i915->wq = alloc_ordered_workqueue("mock", 0);
208         if (!i915->wq)
209                 goto err_drv;
210
211         mock_init_contexts(i915);
212
213         /* allocate the ggtt */
214         ret = intel_gt_assign_ggtt(to_gt(i915));
215         if (ret)
216                 goto err_unlock;
217
218         mock_init_ggtt(to_gt(i915));
219         to_gt(i915)->vm = i915_vm_get(&to_gt(i915)->ggtt->vm);
220
221         RUNTIME_INFO(i915)->platform_engine_mask = BIT(0);
222         to_gt(i915)->info.engine_mask = BIT(0);
223
224         to_gt(i915)->engine[RCS0] = mock_engine(i915, "mock", RCS0);
225         if (!to_gt(i915)->engine[RCS0])
226                 goto err_unlock;
227
228         if (mock_engine_init(to_gt(i915)->engine[RCS0]))
229                 goto err_context;
230
231         __clear_bit(I915_WEDGED, &to_gt(i915)->reset.flags);
232         intel_engines_driver_register(i915);
233
234         i915->do_release = true;
235         ida_init(&i915->selftest.mock_region_instances);
236
237         return i915;
238
239 err_context:
240         intel_gt_driver_remove(to_gt(i915));
241 err_unlock:
242         destroy_workqueue(i915->wq);
243 err_drv:
244         intel_region_ttm_device_fini(i915);
245 err_ttm:
246         intel_gt_driver_late_release_all(i915);
247         intel_memory_regions_driver_release(i915);
248         drm_mode_config_cleanup(&i915->drm);
249         mock_destroy_device(i915);
250
251         return NULL;
252 }
253
254 void mock_destroy_device(struct drm_i915_private *i915)
255 {
256         struct device *dev = i915->drm.dev;
257
258         devres_release_group(dev, NULL);
259         put_device(dev);
260 }
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