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radeon_module.c revision 1.3.18.1 
      1 /*	$NetBSD: radeon_module.c,v 1.3.18.1 2018/09/06 06:56:37 pgoyette 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 1.3.18.1 2018/09/06 06:56:37 pgoyette 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 
     47 MODULE(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.  */
     54 extern struct drm_driver *const radeon_drm_driver;
     55 extern int radeon_max_kms_ioctl;
     56 
     57 struct drm_sysctl_def radeon_def = DRM_SYSCTL_INIT();
     58 
     59 static int
     60 radeon_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 
     76 int	radeon_guarantee_initialized(void); /* XXX */
     77 int
     78 radeon_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 
     89 static void
     90 radeon_fini(void)
     91 {
     92 
     93 	drm_sysctl_fini(&radeon_def);
     94 }
     95 
     96 static int
     97 radeon_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