1 /* $NetBSD: i915_module.c,v 1.19 2022/07/17 14:10:43 riastradh Exp $ */
2
3 /*-
4 * Copyright (c) 2013 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: i915_module.c,v 1.19 2022/07/17 14:10:43 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_sysctl.h>
44
45 #include "i915_drv.h"
46 #include "i915_globals.h"
47 #include "gt/intel_rps.h"
48
49 MODULE(MODULE_CLASS_DRIVER, i915drmkms, "acpivga,drmkms,drmkms_pci"); /* XXX drmkms_i2c */
50
51 #ifdef _MODULE
52 #include "ioconf.c"
53 #endif
54
55 struct drm_sysctl_def i915_def = DRM_SYSCTL_INIT();
56
57 /* XXX use link sets for DEFINE_SPINLOCK */
58 extern spinlock_t i915_sw_fence_lock;
59 extern spinlock_t *const i915_schedule_lock;
60
61 static int
i915drmkms_init(void)62 i915drmkms_init(void)
63 {
64 int error;
65
66 error = drm_guarantee_initialized();
67 if (error)
68 return error;
69
70 /* XXX errno Linux->NetBSD */
71 error = -i915_globals_init();
72 if (error)
73 return error;
74
75 drm_sysctl_init(&i915_def);
76 spin_lock_init(&mchdev_lock);
77 spin_lock_init(&i915_sw_fence_lock);
78 spin_lock_init(i915_schedule_lock);
79
80 return 0;
81 }
82
83 int i915drmkms_guarantee_initialized(void); /* XXX */
84 int
i915drmkms_guarantee_initialized(void)85 i915drmkms_guarantee_initialized(void)
86 {
87 #ifdef _MODULE
88 return 0;
89 #else
90 static ONCE_DECL(i915drmkms_init_once);
91
92 return RUN_ONCE(&i915drmkms_init_once, &i915drmkms_init);
93 #endif
94 }
95
96 static void
i915drmkms_fini(void)97 i915drmkms_fini(void)
98 {
99
100 spin_lock_destroy(i915_schedule_lock);
101 spin_lock_destroy(&i915_sw_fence_lock);
102 spin_lock_destroy(&mchdev_lock);
103 drm_sysctl_fini(&i915_def);
104
105 i915_globals_exit();
106 }
107
108 static int
i915drmkms_modcmd(modcmd_t cmd,void * arg __unused)109 i915drmkms_modcmd(modcmd_t cmd, void *arg __unused)
110 {
111 int error;
112
113 switch (cmd) {
114 case MODULE_CMD_INIT:
115 /* XXX Kludge it up... Must happen before attachment. */
116 #ifdef _MODULE
117 error = i915drmkms_init();
118 #else
119 error = i915drmkms_guarantee_initialized();
120 #endif
121 if (error) {
122 aprint_error("i915drmkms: failed to initialize: %d\n",
123 error);
124 return error;
125 }
126 #ifdef _MODULE
127 error = config_init_component(cfdriver_ioconf_i915drmkms,
128 cfattach_ioconf_i915drmkms, cfdata_ioconf_i915drmkms);
129 if (error) {
130 aprint_error("i915drmkms: failed to init component"
131 ": %d\n", error);
132 i915drmkms_fini();
133 return error;
134 }
135 #endif
136 return 0;
137
138 case MODULE_CMD_FINI:
139 #ifdef _MODULE
140 error = config_fini_component(cfdriver_ioconf_i915drmkms,
141 cfattach_ioconf_i915drmkms, cfdata_ioconf_i915drmkms);
142 if (error) {
143 aprint_error("i915drmkms: failed to fini component"
144 ": %d\n", error);
145 return error;
146 }
147 #endif
148 i915drmkms_fini();
149 return 0;
150
151 default:
152 return ENOTTY;
153 }
154 }
155