radeon_module.c revision 1.5 
1/*	$NetBSD: radeon_module.c,v 1.5 2018/08/28 03:35:08 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 1.5 2018/08/28 03:35:08 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/drmP.h>
43#include <drm/drm_sysctl.h>
44
45#include "radeon_drv.h"
46
47MODULE(MODULE_CLASS_DRIVER, radeon, "drmkms,drmkms_pci"); /* XXX drmkms_i2c, drmkms_ttm */
48
49#ifdef _MODULE
50#include "ioconf.c"
51#endif
52
53/* XXX Kludge to get these from radeon_drv.c.  */
54extern struct drm_driver *const radeon_drm_driver;
55extern int radeon_max_kms_ioctl;
56
57struct drm_sysctl_def radeon_def = DRM_SYSCTL_INIT();
58
59static int
60radeon_init(void)
61{
62	int error;
63
64	error = drm_guarantee_initialized();
65	if (error)
66		return error;
67
68	radeon_drm_driver->num_ioctls = radeon_max_kms_ioctl;
69	radeon_drm_driver->driver_features |= DRIVER_MODESET;
70
71	drm_sysctl_init(&radeon_def);
72
73	return 0;
74}
75
76int	radeon_guarantee_initialized(void); /* XXX */
77int
78radeon_guarantee_initialized(void)
79{
80#ifdef _MODULE
81	return 0;
82#else
83	static ONCE_DECL(radeon_init_once);
84
85	return RUN_ONCE(&radeon_init_once, &radeon_init);
86#endif
87}
88
89static void
90radeon_fini(void)
91{
92
93	drm_sysctl_fini(&radeon_def);
94}
95
96static int
97radeon_modcmd(modcmd_t cmd, void *arg __unused)
98{
99	int error;
100
101	switch (cmd) {
102	case MODULE_CMD_INIT:
103		/* XXX Kludge it up...  Must happen before attachment.  */
104#ifdef _MODULE
105		error = radeon_init();
106#else
107		error = radeon_guarantee_initialized();
108#endif
109		if (error) {
110			aprint_error("radeon: failed to initialize: %d\n",
111			    error);
112			return error;
113		}
114#ifdef _MODULE
115		error = config_init_component(cfdriver_ioconf_radeon,
116		    cfattach_ioconf_radeon, cfdata_ioconf_radeon);
117		if (error) {
118			aprint_error("radeon: failed to init component"
119			    ": %d\n", error);
120			radeon_fini();
121			return error;
122		}
123#endif
124		return 0;
125
126	case MODULE_CMD_FINI:
127#ifdef _MODULE
128		error = config_fini_component(cfdriver_ioconf_radeon,
129		    cfattach_ioconf_radeon, cfdata_ioconf_radeon);
130		if (error) {
131			aprint_error("radeon: failed to fini component"
132			    ": %d\n", error);
133			return error;
134		}
135#endif
136		radeon_fini();
137		return 0;
138
139	default:
140		return ENOTTY;
141	}
142}
143