1 /*- 2 * Copyright (c) 2006 The FreeBSD Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/file.h> 32 #include <sys/kernel.h> 33 #include <sys/module.h> 34 #include <sys/proc.h> 35 #include <sys/systm.h> 36 37 #include <dev/tdfx/tdfx_linux.h> 38 39 LINUX_IOCTL_SET(tdfx, LINUX_IOCTL_TDFX_MIN, LINUX_IOCTL_TDFX_MAX); 40 41 /* 42 * Linux emulation IOCTL for /dev/tdfx 43 */ 44 static int 45 linux_ioctl_tdfx(struct thread *td, struct linux_ioctl_args* args) 46 { 47 int error = 0; 48 u_long cmd = args->cmd & 0xffff; 49 50 /* The structure passed to ioctl has two shorts, one int 51 and one void*. */ 52 char d_pio[2*sizeof(short) + sizeof(int) + sizeof(void*)]; 53 54 struct file *fp; 55 56 if ((error = fget(td, args->fd, &fp)) != 0) 57 return (error); 58 /* We simply copy the data and send it right to ioctl */ 59 copyin((caddr_t)args->arg, &d_pio, sizeof(d_pio)); 60 error = fo_ioctl(fp, cmd, (caddr_t)&d_pio, td->td_ucred, td); 61 fdrop(fp, td); 62 return error; 63 } 64 65 static int 66 tdfx_linux_modevent(struct module *mod __unused, int what, void *arg __unused) 67 { 68 69 switch (what) { 70 case MOD_LOAD: 71 case MOD_UNLOAD: 72 return (0); 73 } 74 return (EOPNOTSUPP); 75 } 76 77 static moduledata_t tdfx_linux_mod = { 78 "tdfx_linux", 79 tdfx_linux_modevent, 80 0 81 }; 82 83 /* As in SYSCALL_MODULE */ 84 DECLARE_MODULE(tdfx_linux, tdfx_linux_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 85 MODULE_VERSION(tdfx_linux, 1); 86 MODULE_DEPEND(tdfx_linux, tdfx, 1, 1, 1); 87 MODULE_DEPEND(tdfx_linux, linux, 1, 1, 1); 88