1 /* 2 * Copyright (c) 2014, LSI Corp. All rights reserved. Author: Kashyap Desai, 3 * Sibananda Sahu Support: freebsdraid@lsi.com 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 2. Redistributions 11 * in binary form must reproduce the above copyright notice, this list of 12 * conditions and the following disclaimer in the documentation and/or other 13 * materials provided with the distribution. 3. Neither the name of the 14 * <ORGANIZATION> nor the names of its contributors may be used to endorse or 15 * promote products derived from this software without specific prior written 16 * permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 * 30 * The views and conclusions contained in the software and documentation are 31 * those of the authors and should not be interpreted as representing 32 * official policies,either expressed or implied, of the FreeBSD Project. 33 * 34 * Send feedback to: <megaraidfbsd@lsi.com> Mail to: LSI Corporation, 1621 35 * Barber Lane, Milpitas, CA 95035 ATTN: MegaRaid FreeBSD 36 * 37 */ 38 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 45 #if (__FreeBSD_version > 900000) 46 #include <sys/capability.h> 47 #endif 48 49 #include <sys/conf.h> 50 #include <sys/kernel.h> 51 #include <sys/module.h> 52 #include <sys/file.h> 53 #include <sys/proc.h> 54 #include <machine/bus.h> 55 56 #if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */ 57 #include <machine/../linux32/linux.h> 58 #include <machine/../linux32/linux32_proto.h> 59 #else 60 #include <machine/../linux/linux.h> 61 #include <machine/../linux/linux_proto.h> 62 #endif 63 #include <compat/linux/linux_ioctl.h> 64 #include <compat/linux/linux_util.h> 65 66 #include <dev/mrsas/mrsas.h> 67 #include <dev/mrsas/mrsas_ioctl.h> 68 69 /* There are multiple ioctl number ranges that need to be handled */ 70 #define MRSAS_LINUX_IOCTL_MIN 0x4d00 71 #define MRSAS_LINUX_IOCTL_MAX 0x4d01 72 73 static linux_ioctl_function_t mrsas_linux_ioctl; 74 static struct linux_ioctl_handler mrsas_linux_handler = {mrsas_linux_ioctl, 75 MRSAS_LINUX_IOCTL_MIN, 76 MRSAS_LINUX_IOCTL_MAX}; 77 78 SYSINIT(mrsas_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 79 linux_ioctl_register_handler, &mrsas_linux_handler); 80 SYSUNINIT(mrsas_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 81 linux_ioctl_unregister_handler, &mrsas_linux_handler); 82 83 static struct linux_device_handler mrsas_device_handler = 84 {"mrsas", "megaraid_sas", "mrsas0", "megaraid_sas_ioctl_node", -1, 0, 1}; 85 86 SYSINIT(mrsas_register2, SI_SUB_KLD, SI_ORDER_MIDDLE, 87 linux_device_register_handler, &mrsas_device_handler); 88 SYSUNINIT(mrsas_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE, 89 linux_device_unregister_handler, &mrsas_device_handler); 90 91 static int 92 mrsas_linux_modevent(module_t mod __unused, int cmd __unused, void *data __unused) 93 { 94 return (0); 95 } 96 97 /* 98 * mrsas_linux_ioctl: linux emulator IOCtl commands entry point. 99 * 100 * This function is the entry point for IOCtls from linux binaries. 101 * It calls the mrsas_ioctl function for processing 102 * depending on the IOCTL command received. 103 */ 104 static int 105 mrsas_linux_ioctl(struct thread *p, struct linux_ioctl_args *args) 106 { 107 #if (__FreeBSD_version >= 1000000) 108 cap_rights_t rights; 109 110 #endif 111 struct file *fp; 112 int error; 113 u_long cmd = args->cmd; 114 115 if (cmd != MRSAS_LINUX_CMD32) { 116 error = ENOTSUP; 117 goto END; 118 } 119 #if (__FreeBSD_version >= 1000000) 120 error = fget(p, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp); 121 #elif (__FreeBSD_version <= 900000) 122 error = fget(p, args->fd, &fp); 123 #else /* For FreeBSD version greater than 124 * 9.0.0 but less than 10.0.0 */ 125 error = fget(p, args->fd, CAP_IOCTL, &fp); 126 #endif 127 if (error != 0) 128 goto END; 129 130 error = fo_ioctl(fp, cmd, (caddr_t)args->arg, p->td_ucred, p); 131 fdrop(fp, p); 132 END: 133 return (error); 134 } 135 136 DEV_MODULE(mrsas_linux, mrsas_linux_modevent, NULL); 137 MODULE_DEPEND(mrsas, linux, 1, 1, 1); 138