1 /* 2 * Copyright (c) 2015, AVAGO Tech. All rights reserved. Author: Kashyap Desai, 3 * Copyright (c) 2014, LSI Corp. All rights reserved. Author: Kashyap Desai, 4 * Sibananda Sahu Support: freebsdraid@avagotech.com 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * 1. Redistributions of source code must retain the above copyright notice, 11 * this list of conditions and the following disclaimer. 2. Redistributions 12 * in binary form must reproduce the above copyright notice, this list of 13 * conditions and the following disclaimer in the documentation and/or other 14 * materials provided with the distribution. 3. Neither the name of the 15 * <ORGANIZATION> nor the names of its contributors may be used to endorse or 16 * promote products derived from this software without specific prior written 17 * permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * The views and conclusions contained in the software and documentation are 32 * those of the authors and should not be interpreted as representing 33 * official policies,either expressed or implied, of the FreeBSD Project. 34 * 35 * Send feedback to: <megaraidfbsd@avagotech.com> Mail to: AVAGO TECHNOLOGIES, 1621 36 * Barber Lane, Milpitas, CA 95035 ATTN: MegaRaid FreeBSD 37 * 38 */ 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 46 #if (__FreeBSD_version >= 1001511) 47 #include <sys/capsicum.h> 48 #elif (__FreeBSD_version > 900000) 49 #include <sys/capability.h> 50 #endif 51 52 #include <sys/conf.h> 53 #include <sys/kernel.h> 54 #include <sys/module.h> 55 #include <sys/file.h> 56 #include <sys/proc.h> 57 #include <machine/bus.h> 58 59 #if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */ 60 #include <machine/../linux32/linux.h> 61 #include <machine/../linux32/linux32_proto.h> 62 #else 63 #include <machine/../linux/linux.h> 64 #include <machine/../linux/linux_proto.h> 65 #endif 66 #include <compat/linux/linux_ioctl.h> 67 #include <compat/linux/linux_util.h> 68 69 #include <dev/mrsas/mrsas.h> 70 #include <dev/mrsas/mrsas_ioctl.h> 71 72 /* There are multiple ioctl number ranges that need to be handled */ 73 #define MRSAS_LINUX_IOCTL_MIN 0x4d00 74 #define MRSAS_LINUX_IOCTL_MAX 0x4d01 75 76 static linux_ioctl_function_t mrsas_linux_ioctl; 77 static struct linux_ioctl_handler mrsas_linux_handler = {mrsas_linux_ioctl, 78 MRSAS_LINUX_IOCTL_MIN, 79 MRSAS_LINUX_IOCTL_MAX}; 80 81 SYSINIT(mrsas_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 82 linux_ioctl_register_handler, &mrsas_linux_handler); 83 SYSUNINIT(mrsas_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 84 linux_ioctl_unregister_handler, &mrsas_linux_handler); 85 86 static struct linux_device_handler mrsas_device_handler = 87 {"mrsas", "megaraid_sas", "mrsas0", "megaraid_sas_ioctl_node", -1, 0, 1}; 88 89 SYSINIT(mrsas_register2, SI_SUB_KLD, SI_ORDER_MIDDLE, 90 linux_device_register_handler, &mrsas_device_handler); 91 SYSUNINIT(mrsas_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE, 92 linux_device_unregister_handler, &mrsas_device_handler); 93 94 static int 95 mrsas_linux_modevent(module_t mod __unused, int cmd __unused, void *data __unused) 96 { 97 return (0); 98 } 99 100 /* 101 * mrsas_linux_ioctl: linux emulator IOCtl commands entry point. 102 * 103 * This function is the entry point for IOCtls from linux binaries. 104 * It calls the mrsas_ioctl function for processing 105 * depending on the IOCTL command received. 106 */ 107 static int 108 mrsas_linux_ioctl(struct thread *p, struct linux_ioctl_args *args) 109 { 110 #if (__FreeBSD_version >= 1000000) 111 cap_rights_t rights; 112 113 #endif 114 struct file *fp; 115 int error; 116 u_long cmd = args->cmd; 117 118 if (cmd != MRSAS_LINUX_CMD32) { 119 error = ENOTSUP; 120 goto END; 121 } 122 #if (__FreeBSD_version >= 1000000) 123 error = fget(p, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp); 124 #elif (__FreeBSD_version <= 900000) 125 error = fget(p, args->fd, &fp); 126 #else /* For FreeBSD version greater than 127 * 9.0.0 but less than 10.0.0 */ 128 error = fget(p, args->fd, CAP_IOCTL, &fp); 129 #endif 130 if (error != 0) 131 goto END; 132 133 error = fo_ioctl(fp, cmd, (caddr_t)args->arg, p->td_ucred, p); 134 fdrop(fp, p); 135 END: 136 return (error); 137 } 138 139 DEV_MODULE(mrsas_linux, mrsas_linux_modevent, NULL); 140 MODULE_DEPEND(mrsas, linux, 1, 1, 1); 141