1 /* $NetBSD: drm_legacy_misc.c,v 1.3 2021/12/19 12:30:04 riastradh Exp $ */
2
3 /*
4 * \file drm_legacy_misc.c
5 * Misc legacy support functions.
6 *
7 * \author Rickard E. (Rik) Faith <faith@valinux.com>
8 * \author Gareth Hughes <gareth@valinux.com>
9 */
10
11 /*
12 * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com
13 *
14 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
15 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
16 * All Rights Reserved.
17 *
18 * Permission is hereby granted, free of charge, to any person obtaining a
19 * copy of this software and associated documentation files (the "Software"),
20 * to deal in the Software without restriction, including without limitation
21 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
22 * and/or sell copies of the Software, and to permit persons to whom the
23 * Software is furnished to do so, subject to the following conditions:
24 *
25 * The above copyright notice and this permission notice (including the next
26 * paragraph) shall be included in all copies or substantial portions of the
27 * Software.
28 *
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
30 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
31 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
32 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
33 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
34 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
35 * OTHER DEALINGS IN THE SOFTWARE.
36 */
37
38 #include <sys/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: drm_legacy_misc.c,v 1.3 2021/12/19 12:30:04 riastradh Exp $");
40
41 #include <drm/drm_agpsupport.h>
42 #include <drm/drm_device.h>
43 #include <drm/drm_drv.h>
44 #include <drm/drm_irq.h>
45 #include <drm/drm_print.h>
46
47 #include "drm_internal.h"
48 #include "drm_legacy.h"
49
50 #include <linux/nbsd-namespace.h>
51
drm_legacy_init_members(struct drm_device * dev)52 void drm_legacy_init_members(struct drm_device *dev)
53 {
54 INIT_LIST_HEAD(&dev->ctxlist);
55 INIT_LIST_HEAD(&dev->vmalist);
56 INIT_LIST_HEAD(&dev->maplist);
57 spin_lock_init(&dev->buf_lock);
58 mutex_init(&dev->ctxlist_mutex);
59 }
60
drm_legacy_destroy_members(struct drm_device * dev)61 void drm_legacy_destroy_members(struct drm_device *dev)
62 {
63 mutex_destroy(&dev->ctxlist_mutex);
64 spin_lock_destroy(&dev->buf_lock);
65 }
66
drm_legacy_setup(struct drm_device * dev)67 int drm_legacy_setup(struct drm_device * dev)
68 {
69 int ret;
70
71 if (dev->driver->firstopen &&
72 drm_core_check_feature(dev, DRIVER_LEGACY)) {
73 ret = dev->driver->firstopen(dev);
74 if (ret != 0)
75 return ret;
76 }
77
78 ret = drm_legacy_dma_setup(dev);
79 if (ret < 0)
80 return ret;
81
82
83 DRM_DEBUG("\n");
84 return 0;
85 }
86
drm_legacy_dev_reinit(struct drm_device * dev)87 void drm_legacy_dev_reinit(struct drm_device *dev)
88 {
89 if (dev->irq_enabled)
90 drm_irq_uninstall(dev);
91
92 mutex_lock(&dev->struct_mutex);
93
94 drm_legacy_agp_clear(dev);
95
96 drm_legacy_sg_cleanup(dev);
97 drm_legacy_vma_flush(dev);
98 drm_legacy_dma_takedown(dev);
99
100 mutex_unlock(&dev->struct_mutex);
101
102 dev->sigdata.lock = NULL;
103
104 dev->context_flag = 0;
105 dev->last_context = 0;
106 dev->if_version = 0;
107
108 DRM_DEBUG("lastclose completed\n");
109 }
110
drm_master_legacy_init(struct drm_master * master)111 void drm_master_legacy_init(struct drm_master *master)
112 {
113 spin_lock_init(&master->lock.spinlock);
114 DRM_INIT_WAITQUEUE(&master->lock.lock_queue, "drmlock");
115 }
116