1 | /* |
2 | * \file drm_legacy_misc.c |
3 | * Misc legacy support functions. |
4 | * |
5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> |
6 | * \author Gareth Hughes <gareth@valinux.com> |
7 | */ |
8 | |
9 | /* |
10 | * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com |
11 | * |
12 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
13 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
14 | * All Rights Reserved. |
15 | * |
16 | * Permission is hereby granted, free of charge, to any person obtaining a |
17 | * copy of this software and associated documentation files (the "Software"), |
18 | * to deal in the Software without restriction, including without limitation |
19 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
20 | * and/or sell copies of the Software, and to permit persons to whom the |
21 | * Software is furnished to do so, subject to the following conditions: |
22 | * |
23 | * The above copyright notice and this permission notice (including the next |
24 | * paragraph) shall be included in all copies or substantial portions of the |
25 | * Software. |
26 | * |
27 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
28 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
29 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
30 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
31 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
32 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
33 | * OTHER DEALINGS IN THE SOFTWARE. |
34 | */ |
35 | |
36 | #include <drm/drm_device.h> |
37 | #include <drm/drm_drv.h> |
38 | #include <drm/drm_print.h> |
39 | |
40 | #include "drm_internal.h" |
41 | #include "drm_legacy.h" |
42 | |
43 | void drm_legacy_init_members(struct drm_device *dev) |
44 | { |
45 | INIT_LIST_HEAD(list: &dev->ctxlist); |
46 | INIT_LIST_HEAD(list: &dev->vmalist); |
47 | INIT_LIST_HEAD(list: &dev->maplist); |
48 | spin_lock_init(&dev->buf_lock); |
49 | mutex_init(&dev->ctxlist_mutex); |
50 | } |
51 | |
52 | void drm_legacy_destroy_members(struct drm_device *dev) |
53 | { |
54 | mutex_destroy(lock: &dev->ctxlist_mutex); |
55 | } |
56 | |
57 | int drm_legacy_setup(struct drm_device * dev) |
58 | { |
59 | int ret; |
60 | |
61 | if (dev->driver->firstopen && |
62 | drm_core_check_feature(dev, feature: DRIVER_LEGACY)) { |
63 | ret = dev->driver->firstopen(dev); |
64 | if (ret != 0) |
65 | return ret; |
66 | } |
67 | |
68 | ret = drm_legacy_dma_setup(dev); |
69 | if (ret < 0) |
70 | return ret; |
71 | |
72 | |
73 | DRM_DEBUG("\n" ); |
74 | return 0; |
75 | } |
76 | |
77 | void drm_legacy_dev_reinit(struct drm_device *dev) |
78 | { |
79 | if (dev->irq_enabled) |
80 | drm_legacy_irq_uninstall(dev); |
81 | |
82 | mutex_lock(&dev->struct_mutex); |
83 | |
84 | drm_legacy_agp_clear(dev); |
85 | |
86 | drm_legacy_sg_cleanup(dev); |
87 | drm_legacy_vma_flush(d: dev); |
88 | drm_legacy_dma_takedown(dev); |
89 | |
90 | mutex_unlock(lock: &dev->struct_mutex); |
91 | |
92 | dev->sigdata.lock = NULL; |
93 | |
94 | dev->context_flag = 0; |
95 | dev->last_context = 0; |
96 | dev->if_version = 0; |
97 | |
98 | DRM_DEBUG("lastclose completed\n" ); |
99 | } |
100 | |
101 | void drm_master_legacy_init(struct drm_master *master) |
102 | { |
103 | spin_lock_init(&master->lock.spinlock); |
104 | init_waitqueue_head(&master->lock.lock_queue); |
105 | } |
106 | |