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      1 /*	$NetBSD: nouveau_module.c,v 1.11 2022/07/17 15:36:51 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: nouveau_module.c,v 1.11 2022/07/17 15:36:51 riastradh Exp $");
     34 
     35 #include <sys/types.h>
     36 #include <sys/module.h>
     37 #include <sys/systm.h>
     38 
     39 #include <drm/drm_sysctl.h>
     40 
     41 #include <core/device.h>
     42 
     43 MODULE(MODULE_CLASS_DRIVER, nouveau, "drmkms,drmkms_ttm"); /* XXX drmkms_i2c */
     44 
     45 #ifdef _MODULE
     46 #include "ioconf.c"
     47 #endif
     48 
     49 struct drm_sysctl_def nouveau_def = DRM_SYSCTL_INIT();
     50 
     51 static int
     52 nouveau_init(void)
     53 {
     54 
     55 	nvkm_devices_init();
     56 	drm_sysctl_init(&nouveau_def);
     57 
     58 	return 0;
     59 }
     60 
     61 static void
     62 nouveau_fini(void)
     63 {
     64 
     65 	drm_sysctl_fini(&nouveau_def);
     66 	nvkm_devices_fini();
     67 }
     68 
     69 static int
     70 nouveau_modcmd(modcmd_t cmd, void *arg __unused)
     71 {
     72 	int error;
     73 
     74 	switch (cmd) {
     75 	case MODULE_CMD_INIT:
     76 		error = nouveau_init();
     77 		if (error) {
     78 			aprint_error("nouveau: failed to initialize: %d\n",
     79 			    error);
     80 			return error;
     81 		}
     82 #ifdef _MODULE
     83 		error = config_init_component(cfdriver_ioconf_nouveau,
     84 		    cfattach_ioconf_nouveau, cfdata_ioconf_nouveau);
     85 		if (error) {
     86 			aprint_error("nouveau: failed to init component"
     87 			    ": %d\n", error);
     88 			nouveau_fini();
     89 			return error;
     90 		}
     91 #endif
     92 		return 0;
     93 
     94 	case MODULE_CMD_FINI:
     95 #ifdef _MODULE
     96 		error = config_fini_component(cfdriver_ioconf_nouveau,
     97 		    cfattach_ioconf_nouveau, cfdata_ioconf_nouveau);
     98 		if (error) {
     99 			aprint_error("nouveau: failed to fini component"
    100 			    ": %d\n", error);
    101 			return error;
    102 		}
    103 #endif
    104 		nouveau_fini();
    105 		return 0;
    106 
    107 	default:
    108 		return ENOTTY;
    109 	}
    110 }
    111