drm_module.c revision 1.7.4.2
1 1.7.4.2 tls /* $NetBSD: drm_module.c,v 1.7.4.2 2014/08/20 00:04:20 tls Exp $ */ 2 1.7.4.2 tls 3 1.7.4.2 tls /*- 4 1.7.4.2 tls * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.7.4.2 tls * All rights reserved. 6 1.7.4.2 tls * 7 1.7.4.2 tls * This code is derived from software contributed to The NetBSD Foundation 8 1.7.4.2 tls * by Taylor R. Campbell. 9 1.7.4.2 tls * 10 1.7.4.2 tls * Redistribution and use in source and binary forms, with or without 11 1.7.4.2 tls * modification, are permitted provided that the following conditions 12 1.7.4.2 tls * are met: 13 1.7.4.2 tls * 1. Redistributions of source code must retain the above copyright 14 1.7.4.2 tls * notice, this list of conditions and the following disclaimer. 15 1.7.4.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.7.4.2 tls * notice, this list of conditions and the following disclaimer in the 17 1.7.4.2 tls * documentation and/or other materials provided with the distribution. 18 1.7.4.2 tls * 19 1.7.4.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.7.4.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.7.4.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.7.4.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.7.4.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.7.4.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.7.4.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.7.4.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.7.4.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.7.4.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.7.4.2 tls * POSSIBILITY OF SUCH DAMAGE. 30 1.7.4.2 tls */ 31 1.7.4.2 tls 32 1.7.4.2 tls #include <sys/cdefs.h> 33 1.7.4.2 tls __KERNEL_RCSID(0, "$NetBSD: drm_module.c,v 1.7.4.2 2014/08/20 00:04:20 tls Exp $"); 34 1.7.4.2 tls 35 1.7.4.2 tls #include <sys/types.h> 36 1.7.4.2 tls #include <sys/device.h> 37 1.7.4.2 tls #include <sys/module.h> 38 1.7.4.2 tls #ifndef _MODULE 39 1.7.4.2 tls #include <sys/once.h> 40 1.7.4.2 tls #endif 41 1.7.4.2 tls #include <sys/reboot.h> 42 1.7.4.2 tls #include <sys/systm.h> 43 1.7.4.2 tls 44 1.7.4.2 tls #include <linux/mutex.h> 45 1.7.4.2 tls 46 1.7.4.2 tls #include <drm/drmP.h> 47 1.7.4.2 tls 48 1.7.4.2 tls /* 49 1.7.4.2 tls * XXX I2C stuff should be moved to a separate drmkms_i2c module. 50 1.7.4.2 tls */ 51 1.7.4.2 tls MODULE(MODULE_CLASS_DRIVER, drmkms, "iic,drmkms_linux"); 52 1.7.4.2 tls 53 1.7.4.2 tls #ifdef _MODULE 54 1.7.4.2 tls #include "ioconf.c" 55 1.7.4.2 tls #endif 56 1.7.4.2 tls 57 1.7.4.2 tls struct mutex drm_global_mutex; 58 1.7.4.2 tls 59 1.7.4.2 tls static int 60 1.7.4.2 tls drm_init(void) 61 1.7.4.2 tls { 62 1.7.4.2 tls extern int linux_guarantee_initialized(void); 63 1.7.4.2 tls int error; 64 1.7.4.2 tls 65 1.7.4.2 tls error = linux_guarantee_initialized(); 66 1.7.4.2 tls if (error) 67 1.7.4.2 tls return error; 68 1.7.4.2 tls 69 1.7.4.2 tls if (ISSET(boothowto, AB_DEBUG)) 70 1.7.4.2 tls drm_debug = ~(unsigned int)0; 71 1.7.4.2 tls 72 1.7.4.2 tls spin_lock_init(&drm_minor_lock); 73 1.7.4.2 tls idr_init(&drm_minors_idr); 74 1.7.4.2 tls linux_mutex_init(&drm_global_mutex); 75 1.7.4.2 tls drm_connector_ida_init(); 76 1.7.4.2 tls drm_global_init(); 77 1.7.4.2 tls 78 1.7.4.2 tls return 0; 79 1.7.4.2 tls } 80 1.7.4.2 tls 81 1.7.4.2 tls int drm_guarantee_initialized(void); /* XXX */ 82 1.7.4.2 tls int 83 1.7.4.2 tls drm_guarantee_initialized(void) 84 1.7.4.2 tls { 85 1.7.4.2 tls #ifdef _MODULE 86 1.7.4.2 tls return 0; 87 1.7.4.2 tls #else 88 1.7.4.2 tls static ONCE_DECL(drm_init_once); 89 1.7.4.2 tls 90 1.7.4.2 tls return RUN_ONCE(&drm_init_once, &drm_init); 91 1.7.4.2 tls #endif 92 1.7.4.2 tls } 93 1.7.4.2 tls 94 1.7.4.2 tls static void 95 1.7.4.2 tls drm_fini(void) 96 1.7.4.2 tls { 97 1.7.4.2 tls 98 1.7.4.2 tls drm_global_release(); 99 1.7.4.2 tls drm_connector_ida_destroy(); 100 1.7.4.2 tls linux_mutex_destroy(&drm_global_mutex); 101 1.7.4.2 tls idr_destroy(&drm_minors_idr); 102 1.7.4.2 tls spin_lock_destroy(&drm_minor_lock); 103 1.7.4.2 tls } 104 1.7.4.2 tls 105 1.7.4.2 tls static int 106 1.7.4.2 tls drmkms_modcmd(modcmd_t cmd, void *arg __unused) 107 1.7.4.2 tls { 108 1.7.4.2 tls #ifdef _MODULE 109 1.7.4.2 tls devmajor_t bmajor = NODEVMAJOR, cmajor = NODEVMAJOR; 110 1.7.4.2 tls #endif 111 1.7.4.2 tls int error; 112 1.7.4.2 tls 113 1.7.4.2 tls switch (cmd) { 114 1.7.4.2 tls case MODULE_CMD_INIT: 115 1.7.4.2 tls #ifdef _MODULE 116 1.7.4.2 tls error = drm_init(); 117 1.7.4.2 tls #else 118 1.7.4.2 tls error = drm_guarantee_initialized(); 119 1.7.4.2 tls #endif 120 1.7.4.2 tls if (error) 121 1.7.4.2 tls return error; 122 1.7.4.2 tls #ifdef _MODULE 123 1.7.4.2 tls error = devsw_attach("drm", NULL, &bmajor, 124 1.7.4.2 tls &drm_cdevsw, &cmajor); 125 1.7.4.2 tls if (error) { 126 1.7.4.2 tls aprint_error("drmkms: unable to attach devsw: %d\n", 127 1.7.4.2 tls error); 128 1.7.4.2 tls return error; 129 1.7.4.2 tls } 130 1.7.4.2 tls #endif 131 1.7.4.2 tls return 0; 132 1.7.4.2 tls 133 1.7.4.2 tls case MODULE_CMD_FINI: 134 1.7.4.2 tls #ifdef _MODULE 135 1.7.4.2 tls error = devsw_detach(NULL, &drm_cdevsw); 136 1.7.4.2 tls if (error) 137 1.7.4.2 tls return error; 138 1.7.4.2 tls #endif 139 1.7.4.2 tls drm_fini(); 140 1.7.4.2 tls return 0; 141 1.7.4.2 tls 142 1.7.4.2 tls default: 143 1.7.4.2 tls return ENOTTY; 144 1.7.4.2 tls } 145 1.7.4.2 tls } 146
Indexes created Thu Oct 02 14:10:14 GMT 2025