linux_module.c revision 1.2
1 1.2 riastrad /* $NetBSD: linux_module.c,v 1.2 2014/03/18 18:20:43 riastradh Exp $ */ 2 1.2 riastrad 3 1.2 riastrad /*- 4 1.2 riastrad * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 1.2 riastrad * All rights reserved. 6 1.2 riastrad * 7 1.2 riastrad * This code is derived from software contributed to The NetBSD Foundation 8 1.2 riastrad * by Taylor R. Campbell. 9 1.2 riastrad * 10 1.2 riastrad * Redistribution and use in source and binary forms, with or without 11 1.2 riastrad * modification, are permitted provided that the following conditions 12 1.2 riastrad * are met: 13 1.2 riastrad * 1. Redistributions of source code must retain the above copyright 14 1.2 riastrad * notice, this list of conditions and the following disclaimer. 15 1.2 riastrad * 2. Redistributions in binary form must reproduce the above copyright 16 1.2 riastrad * notice, this list of conditions and the following disclaimer in the 17 1.2 riastrad * documentation and/or other materials provided with the distribution. 18 1.2 riastrad * 19 1.2 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2 riastrad * POSSIBILITY OF SUCH DAMAGE. 30 1.2 riastrad */ 31 1.2 riastrad 32 1.2 riastrad #include <sys/cdefs.h> 33 1.2 riastrad __KERNEL_RCSID(0, "$NetBSD: linux_module.c,v 1.2 2014/03/18 18:20:43 riastradh Exp $"); 34 1.2 riastrad 35 1.2 riastrad #include <sys/module.h> 36 1.2 riastrad 37 1.2 riastrad #include <linux/highmem.h> 38 1.2 riastrad #include <linux/mutex.h> 39 1.2 riastrad #include <linux/workqueue.h> 40 1.2 riastrad 41 1.2 riastrad MODULE(MODULE_CLASS_MISC, drmkms_linux, NULL); 42 1.2 riastrad 43 1.2 riastrad #ifndef _MODULE 44 1.2 riastrad /* 45 1.2 riastrad * XXX Mega-kludge. See drm_init in drm_drv.c for details. 46 1.2 riastrad */ 47 1.2 riastrad int linux_suppress_init = 0; 48 1.2 riastrad #endif 49 1.2 riastrad 50 1.2 riastrad static int 51 1.2 riastrad drmkms_linux_modcmd(modcmd_t cmd, void *arg __unused) 52 1.2 riastrad { 53 1.2 riastrad int error; 54 1.2 riastrad 55 1.2 riastrad switch (cmd) { 56 1.2 riastrad case MODULE_CMD_INIT: 57 1.2 riastrad #ifndef _MODULE 58 1.2 riastrad if (linux_suppress_init) 59 1.2 riastrad return 0; 60 1.2 riastrad #endif 61 1.2 riastrad error = linux_kmap_init(); 62 1.2 riastrad if (error) { 63 1.2 riastrad aprint_error("drmkms_linux:" 64 1.2 riastrad " unable to initialize linux kmap: %d", 65 1.2 riastrad error); 66 1.2 riastrad goto init_fail0; 67 1.2 riastrad } 68 1.2 riastrad error = linux_workqueue_init(); 69 1.2 riastrad if (error) { 70 1.2 riastrad aprint_error("drmkms_linux:" 71 1.2 riastrad " unable to initialize workqueues: %d", 72 1.2 riastrad error); 73 1.2 riastrad goto init_fail1; 74 1.2 riastrad } 75 1.2 riastrad return 0; 76 1.2 riastrad 77 1.2 riastrad init_fail1: linux_kmap_fini(); 78 1.2 riastrad init_fail0: return error; 79 1.2 riastrad 80 1.2 riastrad case MODULE_CMD_FINI: 81 1.2 riastrad linux_workqueue_fini(); 82 1.2 riastrad linux_kmap_fini(); 83 1.2 riastrad return 0; 84 1.2 riastrad 85 1.2 riastrad default: 86 1.2 riastrad return ENOTTY; 87 1.2 riastrad } 88 1.2 riastrad } 89
Indexes created Tue Sep 23 23:09:58 GMT 2025