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/cdefs.h> 30 #include <sys/param.h> 31 #include <sys/ioccom.h> 32 33 #include <err.h> 34 #include <fcntl.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <sysexits.h> 39 #include <unistd.h> 40 41 #include "nvmecontrol.h" 42 43 static struct options { 44 const char *dev; 45 } opt = { 46 .dev = NULL 47 }; 48 49 static const struct args args[] = { 50 { arg_string, &opt.dev, "controller-id|namespace-id" }, 51 { arg_none, NULL, NULL }, 52 }; 53 54 static void 55 reset(const struct cmd *f, int argc, char *argv[]) 56 { 57 int fd; 58 char *path; 59 uint32_t nsid; 60 61 if (arg_parse(argc, argv, f)) 62 return; 63 open_dev(opt.dev, &fd, 1, 1); 64 get_nsid(fd, &path, &nsid); 65 if (nsid != 0) { 66 close(fd); 67 open_dev(path, &fd, 1, 1); 68 } 69 free(path); 70 71 if (ioctl(fd, NVME_RESET_CONTROLLER) < 0) 72 err(EX_IOERR, "reset request to %s failed", opt.dev); 73 74 exit(0); 75 } 76 77 static struct cmd reset_cmd = { 78 .name = "reset", 79 .fn = reset, 80 .descr = "Perform a controller-level reset", 81 .args = args, 82 }; 83 84 CMD_COMMAND(reset_cmd); 85