radeon_module.c revision 1.2 
1/*	$NetBSD: radeon_module.c,v 1.2 2014/07/26 21:12:43 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 1.2 2014/07/26 21:12:43 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/drmP.h>
43
44#include "radeon_drv.h"
45
46MODULE(MODULE_CLASS_DRIVER, radeon, "drmkms,drmkms_pci"); /* XXX drmkms_i2c, drmkms_ttm */
47
48#ifdef _MODULE
49#include "ioconf.c"
50#endif
51
52/* XXX Kludge to get these from radeon_drv.c.  */
53extern struct drm_driver *const radeon_drm_driver;
54extern int radeon_max_kms_ioctl;
55
56static int
57radeon_init(void)
58{
59	extern int drm_guarantee_initialized(void);
60	int error;
61
62	error = drm_guarantee_initialized();
63	if (error)
64		return error;
65
66	radeon_drm_driver->num_ioctls = radeon_max_kms_ioctl;
67	radeon_drm_driver->driver_features |= DRIVER_MODESET;
68
69	error = drm_pci_init(radeon_drm_driver, NULL);
70	if (error) {
71		aprint_error("radeon: failed to init pci: %d\n",
72		    error);
73		return error;
74	}
75
76	return 0;
77}
78
79int	radeon_guarantee_initialized(void); /* XXX */
80int
81radeon_guarantee_initialized(void)
82{
83#ifdef _MODULE
84	return 0;
85#else
86	static ONCE_DECL(radeon_init_once);
87
88	return RUN_ONCE(&radeon_init_once, &radeon_init);
89#endif
90}
91
92static void
93radeon_fini(void)
94{
95
96	drm_pci_exit(radeon_drm_driver, NULL);
97}
98
99static int
100radeon_modcmd(modcmd_t cmd, void *arg __unused)
101{
102	int error;
103
104	switch (cmd) {
105	case MODULE_CMD_INIT:
106		/* XXX Kludge it up...  Must happen before attachment.  */
107#ifdef _MODULE
108		error = radeon_init();
109#else
110		error = radeon_guarantee_initialized();
111#endif
112		if (error) {
113			aprint_error("radeon: failed to initialize: %d\n",
114			    error);
115			return error;
116		}
117#ifdef _MODULE
118		error = config_init_component(cfdriver_ioconf_radeon,
119		    cfattach_ioconf_radeon, cfdata_ioconf_radeon);
120		if (error) {
121			aprint_error("radeon: failed to init component"
122			    ": %d\n", error);
123			radeon_fini();
124			return error;
125		}
126#endif
127		return 0;
128
129	case MODULE_CMD_FINI:
130#ifdef _MODULE
131		error = config_fini_component(cfdriver_ioconf_radeon,
132		    cfattach_ioconf_radeon, cfdata_ioconf_radeon);
133		if (error) {
134			aprint_error("radeon: failed to fini component"
135			    ": %d\n", error);
136			return error;
137		}
138#endif
139		radeon_fini();
140		return 0;
141
142	default:
143		return ENOTTY;
144	}
145}
146