drm_module.c revision 1.5.4.2
1 1.5.4.2 rmind /* $NetBSD: drm_module.c,v 1.5.4.2 2014/05/18 17:46:00 rmind Exp $ */ 2 1.5.4.2 rmind 3 1.5.4.2 rmind /*- 4 1.5.4.2 rmind * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 1.5.4.2 rmind * All rights reserved. 6 1.5.4.2 rmind * 7 1.5.4.2 rmind * This code is derived from software contributed to The NetBSD Foundation 8 1.5.4.2 rmind * by Taylor R. Campbell. 9 1.5.4.2 rmind * 10 1.5.4.2 rmind * Redistribution and use in source and binary forms, with or without 11 1.5.4.2 rmind * modification, are permitted provided that the following conditions 12 1.5.4.2 rmind * are met: 13 1.5.4.2 rmind * 1. Redistributions of source code must retain the above copyright 14 1.5.4.2 rmind * notice, this list of conditions and the following disclaimer. 15 1.5.4.2 rmind * 2. Redistributions in binary form must reproduce the above copyright 16 1.5.4.2 rmind * notice, this list of conditions and the following disclaimer in the 17 1.5.4.2 rmind * documentation and/or other materials provided with the distribution. 18 1.5.4.2 rmind * 19 1.5.4.2 rmind * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.5.4.2 rmind * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.5.4.2 rmind * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.5.4.2 rmind * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.5.4.2 rmind * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.5.4.2 rmind * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.5.4.2 rmind * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.5.4.2 rmind * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.5.4.2 rmind * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.5.4.2 rmind * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.5.4.2 rmind * POSSIBILITY OF SUCH DAMAGE. 30 1.5.4.2 rmind */ 31 1.5.4.2 rmind 32 1.5.4.2 rmind #include <sys/cdefs.h> 33 1.5.4.2 rmind __KERNEL_RCSID(0, "$NetBSD: drm_module.c,v 1.5.4.2 2014/05/18 17:46:00 rmind Exp $"); 34 1.5.4.2 rmind 35 1.5.4.2 rmind #include <sys/types.h> 36 1.5.4.2 rmind #include <sys/device.h> 37 1.5.4.2 rmind #include <sys/module.h> 38 1.5.4.2 rmind #include <sys/reboot.h> 39 1.5.4.2 rmind #include <sys/systm.h> 40 1.5.4.2 rmind 41 1.5.4.2 rmind #include <drm/drmP.h> 42 1.5.4.2 rmind 43 1.5.4.2 rmind /* 44 1.5.4.2 rmind * XXX I2C stuff should be moved to a separate drmkms_i2c module. 45 1.5.4.2 rmind */ 46 1.5.4.2 rmind MODULE(MODULE_CLASS_DRIVER, drmkms, "iic,drmkms_linux"); 47 1.5.4.2 rmind 48 1.5.4.2 rmind #ifdef _MODULE 49 1.5.4.2 rmind #include "ioconf.c" 50 1.5.4.2 rmind #endif 51 1.5.4.2 rmind 52 1.5.4.2 rmind /* 53 1.5.4.2 rmind * XXX Mega-kludge. See drm_init in drm_drv.c for details. 54 1.5.4.2 rmind */ 55 1.5.4.2 rmind #ifdef _MODULE 56 1.5.4.2 rmind static const int linux_suppress_init = 1; 57 1.5.4.2 rmind #else 58 1.5.4.2 rmind extern int linux_suppress_init; 59 1.5.4.2 rmind #endif 60 1.5.4.2 rmind 61 1.5.4.2 rmind static int 62 1.5.4.2 rmind drmkms_modcmd(modcmd_t cmd, void *arg __unused) 63 1.5.4.2 rmind { 64 1.5.4.2 rmind #ifdef _MODULE 65 1.5.4.2 rmind devmajor_t bmajor = NODEVMAJOR, cmajor = NODEVMAJOR; 66 1.5.4.2 rmind int error; 67 1.5.4.2 rmind #endif 68 1.5.4.2 rmind 69 1.5.4.2 rmind switch (cmd) { 70 1.5.4.2 rmind case MODULE_CMD_INIT: 71 1.5.4.2 rmind if (!linux_suppress_init) { 72 1.5.4.2 rmind linux_mutex_init(&drm_global_mutex); 73 1.5.4.2 rmind if (ISSET(boothowto, AB_DEBUG)) 74 1.5.4.2 rmind drm_debug = ~(unsigned int)0; 75 1.5.4.2 rmind } 76 1.5.4.2 rmind #ifdef _MODULE 77 1.5.4.2 rmind error = config_init_component(cfdriver_ioconf_drmkms, 78 1.5.4.2 rmind cfattach_ioconf_drmkms, cfdata_ioconf_drmkms); 79 1.5.4.2 rmind if (error) { 80 1.5.4.2 rmind aprint_error("drmkms: unable to init component: %d\n", 81 1.5.4.2 rmind error); 82 1.5.4.2 rmind goto init_fail0; 83 1.5.4.2 rmind } 84 1.5.4.2 rmind error = devsw_attach("drm", NULL, &bmajor, 85 1.5.4.2 rmind &drm_cdevsw, &cmajor); 86 1.5.4.2 rmind if (error) { 87 1.5.4.2 rmind aprint_error("drmkms: unable to attach devsw: %d\n", 88 1.5.4.2 rmind error); 89 1.5.4.2 rmind goto init_fail1; 90 1.5.4.2 rmind } 91 1.5.4.2 rmind #endif 92 1.5.4.2 rmind return 0; 93 1.5.4.2 rmind 94 1.5.4.2 rmind #ifdef _MODULE 95 1.5.4.2 rmind init_fail2: __unused 96 1.5.4.2 rmind (void)devsw_detach(NULL, &drm_cdevsw); 97 1.5.4.2 rmind init_fail1: (void)config_fini_component(cfdriver_ioconf_drmkms, 98 1.5.4.2 rmind cfattach_ioconf_drmkms, cfdata_ioconf_drmkms); 99 1.5.4.2 rmind init_fail0: linux_mutex_destroy(&drm_global_mutex); 100 1.5.4.2 rmind return error; 101 1.5.4.2 rmind #endif /* _MODULE */ 102 1.5.4.2 rmind 103 1.5.4.2 rmind case MODULE_CMD_FINI: 104 1.5.4.2 rmind #ifdef _MODULE 105 1.5.4.2 rmind error = devsw_detach(NULL, &drm_cdevsw); 106 1.5.4.2 rmind if (error) 107 1.5.4.2 rmind return error; 108 1.5.4.2 rmind error = config_fini_component(cfdriver_ioconf_drmkms, 109 1.5.4.2 rmind cfattach_ioconf_drmkms, cfdata_ioconf_drmkms); 110 1.5.4.2 rmind if (error) 111 1.5.4.2 rmind /* XXX Now what? Reattach the devsw? */ 112 1.5.4.2 rmind return error; 113 1.5.4.2 rmind #endif 114 1.5.4.2 rmind linux_mutex_destroy(&drm_global_mutex); 115 1.5.4.2 rmind return 0; 116 1.5.4.2 rmind 117 1.5.4.2 rmind default: 118 1.5.4.2 rmind return ENOTTY; 119 1.5.4.2 rmind } 120 1.5.4.2 rmind } 121
Indexes created Thu Oct 02 14:10:14 GMT 2025