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
drm_legacy_init_members(struct drm_device * dev)43 void drm_legacy_init_members(struct drm_device *dev)
44 {
45 INIT_LIST_HEAD(&dev->ctxlist);
46 INIT_LIST_HEAD(&dev->vmalist);
47 INIT_LIST_HEAD(&dev->maplist);
48 spin_lock_init(&dev->buf_lock);
49 mutex_init(&dev->ctxlist_mutex);
50 }
51
drm_legacy_destroy_members(struct drm_device * dev)52 void drm_legacy_destroy_members(struct drm_device *dev)
53 {
54 mutex_destroy(&dev->ctxlist_mutex);
55 }
56
drm_legacy_setup(struct drm_device * dev)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, 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
drm_legacy_dev_reinit(struct drm_device * dev)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(dev);
88 drm_legacy_dma_takedown(dev);
89
90 mutex_unlock(&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
drm_master_legacy_init(struct drm_master * master)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