1 /* $NetBSD: radeon_module.c,v 1.8 2022/07/17 15:36:59 riastradh Exp $ */
2
3 /*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Taylor R. Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: radeon_module.c,v 1.8 2022/07/17 15:36:59 riastradh Exp $");
34
35 #include <sys/types.h>
36 #include <sys/module.h>
37 #ifndef _MODULE
38 #include <sys/once.h>
39 #endif
40 #include <sys/systm.h>
41
42 #include <drm/drm_device.h>
43 #include <drm/drm_drv.h>
44 #include <drm/drm_sysctl.h>
45
46 #include "radeon_drv.h"
47
48 MODULE(MODULE_CLASS_DRIVER, radeon, "drmkms,drmkms_pci,drmkms_ttm"); /* XXX drmkms_i2c */
49
50 #ifdef _MODULE
51 #include "ioconf.c"
52 #endif
53
54 /* XXX Kludge to get these from radeon_drv.c. */
55 extern struct drm_driver *const radeon_drm_driver;
56 extern int radeon_max_kms_ioctl;
57
58 struct drm_sysctl_def radeon_def = DRM_SYSCTL_INIT();
59
60 static int
radeon_init(void)61 radeon_init(void)
62 {
63 int error;
64
65 error = drm_guarantee_initialized();
66 if (error)
67 return error;
68
69 radeon_drm_driver->num_ioctls = radeon_max_kms_ioctl;
70 radeon_drm_driver->driver_features |= DRIVER_MODESET;
71
72 drm_sysctl_init(&radeon_def);
73
74 return 0;
75 }
76
77 int radeon_guarantee_initialized(void); /* XXX */
78 int
radeon_guarantee_initialized(void)79 radeon_guarantee_initialized(void)
80 {
81 #ifdef _MODULE
82 return 0;
83 #else
84 static ONCE_DECL(radeon_init_once);
85
86 return RUN_ONCE(&radeon_init_once, &radeon_init);
87 #endif
88 }
89
90 static void
radeon_fini(void)91 radeon_fini(void)
92 {
93
94 drm_sysctl_fini(&radeon_def);
95 }
96
97 static int
radeon_modcmd(modcmd_t cmd,void * arg __unused)98 radeon_modcmd(modcmd_t cmd, void *arg __unused)
99 {
100 int error;
101
102 switch (cmd) {
103 case MODULE_CMD_INIT:
104 /* XXX Kludge it up... Must happen before attachment. */
105 #ifdef _MODULE
106 error = radeon_init();
107 #else
108 error = radeon_guarantee_initialized();
109 #endif
110 if (error) {
111 aprint_error("radeon: failed to initialize: %d\n",
112 error);
113 return error;
114 }
115 #ifdef _MODULE
116 error = config_init_component(cfdriver_ioconf_radeon,
117 cfattach_ioconf_radeon, cfdata_ioconf_radeon);
118 if (error) {
119 aprint_error("radeon: failed to init component"
120 ": %d\n", error);
121 radeon_fini();
122 return error;
123 }
124 #endif
125 return 0;
126
127 case MODULE_CMD_FINI:
128 #ifdef _MODULE
129 error = config_fini_component(cfdriver_ioconf_radeon,
130 cfattach_ioconf_radeon, cfdata_ioconf_radeon);
131 if (error) {
132 aprint_error("radeon: failed to fini component"
133 ": %d\n", error);
134 return error;
135 }
136 #endif
137 radeon_fini();
138 return 0;
139
140 default:
141 return ENOTTY;
142 }
143 }
144