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
48MODULE(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.  */
55extern struct drm_driver *const radeon_drm_driver;
56extern int radeon_max_kms_ioctl;
57
58struct drm_sysctl_def radeon_def = DRM_SYSCTL_INIT();
59
60static int
61radeon_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
77int	radeon_guarantee_initialized(void); /* XXX */
78int
79radeon_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
90static void
91radeon_fini(void)
92{
93
94	drm_sysctl_fini(&radeon_def);
95}
96
97static int
98radeon_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