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 > 900000) 47 #include <sys/capability.h> 48 #endif 49 50 #include <sys/conf.h> 51 #include <sys/kernel.h> 52 #include <sys/module.h> 53 #include <sys/file.h> 54 #include <sys/proc.h> 55 #include <machine/bus.h> 56 57 #if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */ 58 #include <machine/../linux32/linux.h> 59 #include <machine/../linux32/linux32_proto.h> 60 #else 61 #include <machine/../linux/linux.h> 62 #include <machine/../linux/linux_proto.h> 63 #endif 64 #include <compat/linux/linux_ioctl.h> 65 #include <compat/linux/linux_util.h> 66 67 #include <dev/mrsas/mrsas.h> 68 #include <dev/mrsas/mrsas_ioctl.h> 69 70 /* There are multiple ioctl number ranges that need to be handled */ 71 #define MRSAS_LINUX_IOCTL_MIN 0x4d00 72 #define MRSAS_LINUX_IOCTL_MAX 0x4d01 73 74 static linux_ioctl_function_t mrsas_linux_ioctl; 75 static struct linux_ioctl_handler mrsas_linux_handler = {mrsas_linux_ioctl, 76 MRSAS_LINUX_IOCTL_MIN, 77 MRSAS_LINUX_IOCTL_MAX}; 78 79 SYSINIT(mrsas_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 80 linux_ioctl_register_handler, &mrsas_linux_handler); 81 SYSUNINIT(mrsas_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 82 linux_ioctl_unregister_handler, &mrsas_linux_handler); 83 84 static struct linux_device_handler mrsas_device_handler = 85 {"mrsas", "megaraid_sas", "mrsas0", "megaraid_sas_ioctl_node", -1, 0, 1}; 86 87 SYSINIT(mrsas_register2, SI_SUB_KLD, SI_ORDER_MIDDLE, 88 linux_device_register_handler, &mrsas_device_handler); 89 SYSUNINIT(mrsas_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE, 90 linux_device_unregister_handler, &mrsas_device_handler); 91 92 static int 93 mrsas_linux_modevent(module_t mod __unused, int cmd __unused, void *data __unused) 94 { 95 return (0); 96 } 97 98 /* 99 * mrsas_linux_ioctl: linux emulator IOCtl commands entry point. 100 * 101 * This function is the entry point for IOCtls from linux binaries. 102 * It calls the mrsas_ioctl function for processing 103 * depending on the IOCTL command received. 104 */ 105 static int 106 mrsas_linux_ioctl(struct thread *p, struct linux_ioctl_args *args) 107 { 108 #if (__FreeBSD_version >= 1000000) 109 cap_rights_t rights; 110 111 #endif 112 struct file *fp; 113 int error; 114 u_long cmd = args->cmd; 115 116 if (cmd != MRSAS_LINUX_CMD32) { 117 error = ENOTSUP; 118 goto END; 119 } 120 #if (__FreeBSD_version >= 1000000) 121 error = fget(p, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp); 122 #elif (__FreeBSD_version <= 900000) 123 error = fget(p, args->fd, &fp); 124 #else /* For FreeBSD version greater than 125 * 9.0.0 but less than 10.0.0 */ 126 error = fget(p, args->fd, CAP_IOCTL, &fp); 127 #endif 128 if (error != 0) 129 goto END; 130 131 error = fo_ioctl(fp, cmd, (caddr_t)args->arg, p->td_ucred, p); 132 fdrop(fp, p); 133 END: 134 return (error); 135 } 136 137 DEV_MODULE(mrsas_linux, mrsas_linux_modevent, NULL); 138 MODULE_DEPEND(mrsas, linux, 1, 1, 1); 139