1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (C) 2012-2013 Intel Corporation 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/ioccom.h> 31 32 #include <err.h> 33 #include <fcntl.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <sysexits.h> 38 #include <unistd.h> 39 40 #include "nvmecontrol.h" 41 42 static struct options { 43 const char *dev; 44 } opt = { 45 .dev = NULL 46 }; 47 48 static const struct args args[] = { 49 { arg_string, &opt.dev, "controller-id|namespace-id" }, 50 { arg_none, NULL, NULL }, 51 }; 52 53 static void 54 reset(const struct cmd *f, int argc, char *argv[]) 55 { 56 int fd; 57 char *path; 58 uint32_t nsid; 59 60 if (arg_parse(argc, argv, f)) 61 return; 62 open_dev(opt.dev, &fd, 1, 1); 63 get_nsid(fd, &path, &nsid); 64 if (nsid != 0) { 65 close(fd); 66 open_dev(path, &fd, 1, 1); 67 } 68 free(path); 69 70 if (ioctl(fd, NVME_RESET_CONTROLLER) < 0) 71 err(EX_IOERR, "reset request to %s failed", opt.dev); 72 73 exit(0); 74 } 75 76 static struct cmd reset_cmd = { 77 .name = "reset", 78 .fn = reset, 79 .descr = "Perform a controller-level reset", 80 .args = args, 81 }; 82 83 CMD_COMMAND(reset_cmd); 84