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nouveau_module.c revision 1.1.4.1 
      1 /*	$NetBSD: nouveau_module.c,v 1.1.4.1 2014/09/21 17:41:53 snj 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: nouveau_module.c,v 1.1.4.1 2014/09/21 17:41:53 snj 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 <core/object.h>
     45 #include <engine/device.h>
     46 
     47 MODULE(MODULE_CLASS_DRIVER, nouveau, "drmkms,drmkms_pci"); /* XXX drmkms_i2c, drmkms_ttm */
     48 
     49 #ifdef _MODULE
     50 #include "ioconf.c"
     51 #endif
     52 
     53 extern struct drm_driver *const nouveau_drm_driver; /* XXX */
     54 
     55 static int
     56 nouveau_init(void)
     57 {
     58 	extern int drm_guarantee_initialized(void);
     59 	int error;
     60 
     61 	error = drm_guarantee_initialized();
     62 	if (error)
     63 		return error;
     64 
     65 	error = drm_pci_init(nouveau_drm_driver, NULL);
     66 	if (error) {
     67 		aprint_error("nouveau: failed to init pci: %d\n", error);
     68 		return error;
     69 	}
     70 
     71 	nouveau_objects_init();
     72 	nouveau_devices_init();
     73 #if 0				/* XXX nouveau acpi */
     74 	nouveau_register_dsm_handler();
     75 #endif
     76 
     77 	return 0;
     78 }
     79 
     80 int	nouveau_guarantee_initialized(void); /* XXX */
     81 int
     82 nouveau_guarantee_initialized(void)
     83 {
     84 #ifdef _MODULE
     85 	return 0;
     86 #else
     87 	static ONCE_DECL(nouveau_init_once);
     88 
     89 	return RUN_ONCE(&nouveau_init_once, &nouveau_init);
     90 #endif
     91 }
     92 
     93 static void
     94 nouveau_fini(void)
     95 {
     96 
     97 #if 0				/* XXX nouveau acpi */
     98 	nouveau_unregister_dsm_handler();
     99 #endif
    100 	nouveau_devices_fini();
    101 	nouveau_objects_fini();
    102 	drm_pci_exit(nouveau_drm_driver, NULL);
    103 }
    104 
    105 static int
    106 nouveau_modcmd(modcmd_t cmd, void *arg __unused)
    107 {
    108 	int error;
    109 
    110 	switch (cmd) {
    111 	case MODULE_CMD_INIT:
    112 #ifdef _MODULE
    113 		error = nouveau_init();
    114 #else
    115 		error = nouveau_guarantee_initialized();
    116 #endif
    117 		if (error) {
    118 			aprint_error("nouveau: failed to initialize: %d\n",
    119 			    error);
    120 			return error;
    121 		}
    122 #ifdef _MODULE
    123 		error = config_init_component(cfdriver_ioconf_nouveau,
    124 		    cfattach_ioconf_nouveau, cfdata_ioconf_nouveau);
    125 		if (error) {
    126 			aprint_error("nouveau: failed to init component"
    127 			    ": %d\n", error);
    128 			nouveau_fini();
    129 			return error;
    130 		}
    131 #endif
    132 		return 0;
    133 
    134 	case MODULE_CMD_FINI:
    135 #ifdef _MODULE
    136 		error = config_fini_component(cfdriver_ioconf_nouveau,
    137 		    cfattach_ioconf_nouveau, cfdata_ioconf_nouveau);
    138 		if (error) {
    139 			aprint_error("nouveau: failed to fini component"
    140 			    ": %d\n", error);
    141 			return error;
    142 		}
    143 #endif
    144 		nouveau_fini();
    145 		return 0;
    146 
    147 	default:
    148 		return ENOTTY;
    149 	}
    150 }
    151