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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_runtime.h> | |
26 | ||
27 | #include "mock_gem_device.h" | |
28 | #include "mock_gem_object.h" | |
29 | ||
30 | static void mock_device_release(struct drm_device *dev) | |
31 | { | |
32 | struct drm_i915_private *i915 = to_i915(dev); | |
33 | ||
34 | i915_gem_drain_freed_objects(i915); | |
35 | ||
36 | kmem_cache_destroy(i915->objects); | |
37 | ||
38 | drm_dev_fini(&i915->drm); | |
39 | put_device(&i915->drm.pdev->dev); | |
40 | } | |
41 | ||
42 | static struct drm_driver mock_driver = { | |
43 | .name = "mock", | |
44 | .driver_features = DRIVER_GEM, | |
45 | .release = mock_device_release, | |
46 | ||
47 | .gem_close_object = i915_gem_close_object, | |
48 | .gem_free_object_unlocked = i915_gem_free_object, | |
49 | }; | |
50 | ||
51 | static void release_dev(struct device *dev) | |
52 | { | |
53 | struct pci_dev *pdev = to_pci_dev(dev); | |
54 | ||
55 | kfree(pdev); | |
56 | } | |
57 | ||
58 | struct drm_i915_private *mock_gem_device(void) | |
59 | { | |
60 | struct drm_i915_private *i915; | |
61 | struct pci_dev *pdev; | |
62 | int err; | |
63 | ||
64 | pdev = kzalloc(sizeof(*pdev) + sizeof(*i915), GFP_KERNEL); | |
65 | if (!pdev) | |
66 | goto err; | |
67 | ||
68 | device_initialize(&pdev->dev); | |
69 | pdev->dev.release = release_dev; | |
70 | dev_set_name(&pdev->dev, "mock"); | |
71 | dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); | |
72 | ||
73 | pm_runtime_dont_use_autosuspend(&pdev->dev); | |
74 | pm_runtime_get_sync(&pdev->dev); | |
75 | ||
76 | i915 = (struct drm_i915_private *)(pdev + 1); | |
77 | pci_set_drvdata(pdev, i915); | |
78 | ||
79 | err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev); | |
80 | if (err) { | |
81 | pr_err("Failed to initialise mock GEM device: err=%d\n", err); | |
82 | goto put_device; | |
83 | } | |
84 | i915->drm.pdev = pdev; | |
85 | i915->drm.dev_private = i915; | |
86 | ||
87 | mkwrite_device_info(i915)->gen = -1; | |
88 | ||
89 | spin_lock_init(&i915->mm.object_stat_lock); | |
90 | ||
91 | INIT_WORK(&i915->mm.free_work, __i915_gem_free_work); | |
92 | init_llist_head(&i915->mm.free_list); | |
93 | ||
94 | i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN); | |
95 | if (!i915->objects) | |
96 | goto put_device; | |
97 | ||
98 | return i915; | |
99 | ||
100 | put_device: | |
101 | put_device(&pdev->dev); | |
102 | err: | |
103 | return NULL; | |
104 | } |