Hold the lock while we save/restore register for suspend/resume.
[dragonfly.git] / sys / dev / drm / i915_drv.c
1 /* i915_drv.c -- Intel i915 driver -*- linux-c -*-
2  * Created: Wed Feb 14 17:10:04 2001 by gareth@valinux.com
3  */
4 /*-
5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6  * All Rights Reserved.
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a
9  * copy of this software and associated documentation files (the "Software"),
10  * to deal in the Software without restriction, including without limitation
11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12  * and/or sell copies of the Software, and to permit persons to whom the
13  * Software is furnished to do so, subject to the following conditions:
14  *
15  * The above copyright notice and this permission notice (including the next
16  * paragraph) shall be included in all copies or substantial portions of the
17  * Software.
18  *
19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25  * OTHER DEALINGS IN THE SOFTWARE.
26  *
27  * Authors:
28  *    Gareth Hughes <gareth@valinux.com>
29  *
30  */
31
32 #include "dev/drm/drmP.h"
33 #include "dev/drm/drm.h"
34 #include "dev/drm/i915_drm.h"
35 #include "dev/drm/i915_drv.h"
36 #include "dev/drm/drm_pciids.h"
37
38 /* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */
39 static drm_pci_id_list_t i915_pciidlist[] = {
40         i915_PCI_IDS
41 };
42
43 static int i915_suspend(device_t kdev)
44 {
45         struct drm_device *dev = device_get_softc(kdev);
46
47         if (!dev || !dev->dev_private) {
48                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
49                 return -ENODEV;
50         }
51
52         DRM_LOCK();
53         DRM_DEBUG("starting suspend\n");
54         i915_save_state(dev);
55         DRM_UNLOCK();
56
57         return (bus_generic_suspend(kdev));
58 }
59
60 static int i915_resume(device_t kdev)
61 {
62         struct drm_device *dev = device_get_softc(kdev);
63
64         DRM_LOCK();
65         i915_restore_state(dev);
66         DRM_DEBUG("finished resume\n");
67         DRM_UNLOCK();
68
69         return (bus_generic_resume(kdev));
70 }
71
72 static void i915_configure(struct drm_device *dev)
73 {
74         dev->driver->driver_features =
75            DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | DRIVER_USE_MTRR |
76            DRIVER_HAVE_IRQ;
77
78         dev->driver->buf_priv_size      = sizeof(drm_i915_private_t);
79         dev->driver->load               = i915_driver_load;
80         dev->driver->unload             = i915_driver_unload;
81         dev->driver->preclose           = i915_driver_preclose;
82         dev->driver->lastclose          = i915_driver_lastclose;
83         dev->driver->device_is_agp      = i915_driver_device_is_agp;
84         dev->driver->enable_vblank      = i915_enable_vblank;
85         dev->driver->disable_vblank     = i915_disable_vblank;
86         dev->driver->irq_preinstall     = i915_driver_irq_preinstall;
87         dev->driver->irq_postinstall    = i915_driver_irq_postinstall;
88         dev->driver->irq_uninstall      = i915_driver_irq_uninstall;
89         dev->driver->irq_handler        = i915_driver_irq_handler;
90
91         dev->driver->ioctls             = i915_ioctls;
92         dev->driver->max_ioctl          = i915_max_ioctl;
93
94         dev->driver->name               = DRIVER_NAME;
95         dev->driver->desc               = DRIVER_DESC;
96         dev->driver->date               = DRIVER_DATE;
97         dev->driver->major              = DRIVER_MAJOR;
98         dev->driver->minor              = DRIVER_MINOR;
99         dev->driver->patchlevel         = DRIVER_PATCHLEVEL;
100 }
101
102 static int
103 i915_probe(device_t kdev)
104 {
105         return drm_probe(kdev, i915_pciidlist);
106 }
107
108 static int
109 i915_attach(device_t kdev)
110 {
111         struct drm_device *dev = device_get_softc(kdev);
112
113         dev->driver = malloc(sizeof(struct drm_driver_info), DRM_MEM_DRIVER,
114             M_WAITOK | M_ZERO);
115
116         i915_configure(dev);
117
118         return drm_attach(kdev, i915_pciidlist);
119 }
120
121 static int
122 i915_detach(device_t kdev)
123 {
124         struct drm_device *dev = device_get_softc(kdev);
125         int ret;
126
127         ret = drm_detach(kdev);
128
129         free(dev->driver, DRM_MEM_DRIVER);
130
131         return ret;
132 }
133
134 static device_method_t i915_methods[] = {
135         /* Device interface */
136         DEVMETHOD(device_probe,         i915_probe),
137         DEVMETHOD(device_attach,        i915_attach),
138         DEVMETHOD(device_suspend,       i915_suspend),
139         DEVMETHOD(device_resume,        i915_resume),
140         DEVMETHOD(device_detach,        i915_detach),
141
142         { 0, 0 }
143 };
144
145 static driver_t i915_driver = {
146 #if __FreeBSD_version >= 700010
147         "drm",
148 #else
149         "drmsub",
150 #endif
151         i915_methods,
152         sizeof(struct drm_device)
153 };
154
155 extern devclass_t drm_devclass;
156 #if __FreeBSD_version >= 700010
157 DRIVER_MODULE(i915, vgapci, i915_driver, drm_devclass, 0, 0);
158 #else
159 DRIVER_MODULE(i915, agp, i915_driver, drm_devclass, 0, 0);
160 #endif
161 MODULE_DEPEND(i915, drm, 1, 1, 1);