linux_module.c revision 1.4.4.3
1 1.4.4.2 tls /* $NetBSD: linux_module.c,v 1.4.4.3 2017/12/03 11:38:00 jdolecek Exp $ */ 2 1.4.4.2 tls 3 1.4.4.2 tls /*- 4 1.4.4.2 tls * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 1.4.4.2 tls * All rights reserved. 6 1.4.4.2 tls * 7 1.4.4.2 tls * This code is derived from software contributed to The NetBSD Foundation 8 1.4.4.2 tls * by Taylor R. Campbell. 9 1.4.4.2 tls * 10 1.4.4.2 tls * Redistribution and use in source and binary forms, with or without 11 1.4.4.2 tls * modification, are permitted provided that the following conditions 12 1.4.4.2 tls * are met: 13 1.4.4.2 tls * 1. Redistributions of source code must retain the above copyright 14 1.4.4.2 tls * notice, this list of conditions and the following disclaimer. 15 1.4.4.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.4.4.2 tls * notice, this list of conditions and the following disclaimer in the 17 1.4.4.2 tls * documentation and/or other materials provided with the distribution. 18 1.4.4.2 tls * 19 1.4.4.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.4.4.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.4.4.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.4.4.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.4.4.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.4.4.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.4.4.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.4.4.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.4.4.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.4.4.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.4.4.2 tls * POSSIBILITY OF SUCH DAMAGE. 30 1.4.4.2 tls */ 31 1.4.4.2 tls 32 1.4.4.2 tls #include <sys/cdefs.h> 33 1.4.4.2 tls __KERNEL_RCSID(0, "$NetBSD: linux_module.c,v 1.4.4.3 2017/12/03 11:38:00 jdolecek Exp $"); 34 1.4.4.2 tls 35 1.4.4.2 tls #include <sys/module.h> 36 1.4.4.2 tls #ifndef _MODULE 37 1.4.4.2 tls #include <sys/once.h> 38 1.4.4.2 tls #endif 39 1.4.4.2 tls 40 1.4.4.2 tls #include <linux/highmem.h> 41 1.4.4.2 tls #include <linux/idr.h> 42 1.4.4.2 tls #include <linux/io.h> 43 1.4.4.2 tls #include <linux/mutex.h> 44 1.4.4.2 tls #include <linux/reservation.h> 45 1.4.4.2 tls #include <linux/workqueue.h> 46 1.4.4.2 tls 47 1.4.4.3 jdolecek MODULE(MODULE_CLASS_MISC, drmkms_linux, "i2cexec"); 48 1.4.4.2 tls 49 1.4.4.2 tls DEFINE_WW_CLASS(reservation_ww_class __cacheline_aligned); 50 1.4.4.2 tls 51 1.4.4.2 tls static int 52 1.4.4.2 tls linux_init(void) 53 1.4.4.2 tls { 54 1.4.4.2 tls int error; 55 1.4.4.2 tls 56 1.4.4.2 tls error = linux_idr_module_init(); 57 1.4.4.2 tls if (error) { 58 1.4.4.2 tls printf("linux: unable to initialize idr: %d\n", error); 59 1.4.4.2 tls goto fail0; 60 1.4.4.2 tls } 61 1.4.4.2 tls 62 1.4.4.2 tls error = linux_kmap_init(); 63 1.4.4.2 tls if (error) { 64 1.4.4.2 tls printf("linux: unable to initialize kmap: %d\n", error); 65 1.4.4.2 tls goto fail1; 66 1.4.4.2 tls } 67 1.4.4.2 tls 68 1.4.4.2 tls error = linux_workqueue_init(); 69 1.4.4.2 tls if (error) { 70 1.4.4.2 tls printf("linux: unable to initialize workqueues: %d\n", error); 71 1.4.4.2 tls goto fail2; 72 1.4.4.2 tls } 73 1.4.4.2 tls 74 1.4.4.2 tls error = linux_writecomb_init(); 75 1.4.4.2 tls if (error) { 76 1.4.4.2 tls printf("linux: unable to initialize write-combining: %d\n", 77 1.4.4.2 tls error); 78 1.4.4.2 tls goto fail3; 79 1.4.4.2 tls } 80 1.4.4.2 tls 81 1.4.4.2 tls return 0; 82 1.4.4.2 tls 83 1.4.4.2 tls fail4: __unused 84 1.4.4.2 tls linux_writecomb_fini(); 85 1.4.4.2 tls fail3: linux_workqueue_fini(); 86 1.4.4.2 tls fail2: linux_kmap_fini(); 87 1.4.4.2 tls fail1: linux_idr_module_fini(); 88 1.4.4.2 tls fail0: return error; 89 1.4.4.2 tls } 90 1.4.4.2 tls 91 1.4.4.2 tls int linux_guarantee_initialized(void); /* XXX */ 92 1.4.4.2 tls int 93 1.4.4.2 tls linux_guarantee_initialized(void) 94 1.4.4.2 tls { 95 1.4.4.2 tls #ifdef _MODULE 96 1.4.4.2 tls return 0; 97 1.4.4.2 tls #else 98 1.4.4.2 tls static ONCE_DECL(linux_init_once); 99 1.4.4.2 tls 100 1.4.4.2 tls return RUN_ONCE(&linux_init_once, &linux_init); 101 1.4.4.2 tls #endif 102 1.4.4.2 tls } 103 1.4.4.2 tls 104 1.4.4.2 tls static void 105 1.4.4.2 tls linux_fini(void) 106 1.4.4.2 tls { 107 1.4.4.2 tls 108 1.4.4.2 tls linux_writecomb_fini(); 109 1.4.4.2 tls linux_workqueue_fini(); 110 1.4.4.2 tls linux_kmap_fini(); 111 1.4.4.3 jdolecek linux_idr_module_fini(); 112 1.4.4.2 tls } 113 1.4.4.2 tls 114 1.4.4.2 tls static int 115 1.4.4.2 tls drmkms_linux_modcmd(modcmd_t cmd, void *arg __unused) 116 1.4.4.2 tls { 117 1.4.4.2 tls 118 1.4.4.2 tls switch (cmd) { 119 1.4.4.2 tls case MODULE_CMD_INIT: 120 1.4.4.2 tls #ifdef _MODULE 121 1.4.4.2 tls return linux_init(); 122 1.4.4.2 tls #else 123 1.4.4.2 tls return linux_guarantee_initialized(); 124 1.4.4.2 tls #endif 125 1.4.4.2 tls case MODULE_CMD_FINI: 126 1.4.4.2 tls linux_fini(); 127 1.4.4.2 tls return 0; 128 1.4.4.2 tls default: 129 1.4.4.2 tls return ENOTTY; 130 1.4.4.2 tls } 131 1.4.4.2 tls } 132
Indexes created Thu Sep 25 16:09:42 GMT 2025