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 #include <sys/stat.h> 33 34 #include <ctype.h> 35 #include <dlfcn.h> 36 #include <err.h> 37 #include <errno.h> 38 #include <fcntl.h> 39 #include <libutil.h> 40 #include <paths.h> 41 #include <stdbool.h> 42 #include <stddef.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <sysexits.h> 47 #include <unistd.h> 48 49 #include "nvmecontrol.h" 50 51 static void 52 print_bytes(void *data, uint32_t length) 53 { 54 uint32_t i, j; 55 uint8_t *p, *end; 56 57 end = (uint8_t *)data + length; 58 59 for (i = 0; i < length; i++) { 60 p = (uint8_t *)data + (i*16); 61 printf("%03x: ", i*16); 62 for (j = 0; j < 16 && p < end; j++) 63 printf("%02x ", *p++); 64 if (p >= end) 65 break; 66 printf("\n"); 67 } 68 printf("\n"); 69 } 70 71 static void 72 print_dwords(void *data, uint32_t length) 73 { 74 uint32_t *p; 75 uint32_t i, j; 76 77 p = (uint32_t *)data; 78 length /= sizeof(uint32_t); 79 80 for (i = 0; i < length; i+=8) { 81 printf("%03x: ", i*4); 82 for (j = 0; j < 8; j++) 83 printf("%08x ", p[i+j]); 84 printf("\n"); 85 } 86 87 printf("\n"); 88 } 89 90 void 91 print_hex(void *data, uint32_t length) 92 { 93 if (length >= sizeof(uint32_t) || length % sizeof(uint32_t) == 0) 94 print_dwords(data, length); 95 else 96 print_bytes(data, length); 97 } 98 99 int 100 read_controller_data(int fd, struct nvme_controller_data *cdata) 101 { 102 struct nvme_pt_command pt; 103 104 memset(&pt, 0, sizeof(pt)); 105 pt.cmd.opc = NVME_OPC_IDENTIFY; 106 pt.cmd.cdw10 = htole32(1); 107 pt.buf = cdata; 108 pt.len = sizeof(*cdata); 109 pt.is_read = 1; 110 111 if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) 112 return (errno); 113 114 /* Convert data to host endian */ 115 nvme_controller_data_swapbytes(cdata); 116 117 if (nvme_completion_is_error(&pt.cpl)) 118 return (EIO); 119 return (0); 120 } 121 122 int 123 read_namespace_data(int fd, uint32_t nsid, struct nvme_namespace_data *nsdata) 124 { 125 struct nvme_pt_command pt; 126 127 memset(&pt, 0, sizeof(pt)); 128 pt.cmd.opc = NVME_OPC_IDENTIFY; 129 pt.cmd.nsid = htole32(nsid); 130 pt.cmd.cdw10 = htole32(0); 131 pt.buf = nsdata; 132 pt.len = sizeof(*nsdata); 133 pt.is_read = 1; 134 135 if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) 136 return (errno); 137 138 /* Convert data to host endian */ 139 nvme_namespace_data_swapbytes(nsdata); 140 141 if (nvme_completion_is_error(&pt.cpl)) 142 return (EIO); 143 return (0); 144 } 145 146 int 147 open_dev(const char *str, int *fd, int write, int exit_on_error) 148 { 149 char full_path[64]; 150 151 snprintf(full_path, sizeof(full_path), _PATH_DEV"%s", str); 152 *fd = open(full_path, write ? O_RDWR : O_RDONLY); 153 if (*fd < 0) { 154 if (exit_on_error) { 155 err(EX_OSFILE, "could not open %s%s", full_path, 156 write ? " for write" : ""); 157 } else 158 return (errno); 159 } 160 161 return (0); 162 } 163 164 void 165 get_nsid(int fd, char **ctrlr_str, uint32_t *nsid) 166 { 167 struct nvme_get_nsid gnsid; 168 169 if (ioctl(fd, NVME_GET_NSID, &gnsid) < 0) 170 err(EX_OSERR, "NVME_GET_NSID ioctl failed"); 171 if (ctrlr_str != NULL) 172 *ctrlr_str = strndup(gnsid.cdev, sizeof(gnsid.cdev)); 173 if (nsid != NULL) 174 *nsid = gnsid.nsid; 175 } 176 177 int 178 main(int argc, char *argv[]) 179 { 180 static char dir[MAXPATHLEN]; 181 182 cmd_init(); 183 184 cmd_load_dir("/lib/nvmecontrol", NULL, NULL); 185 snprintf(dir, MAXPATHLEN, "%s/lib/nvmecontrol", getlocalbase()); 186 cmd_load_dir(dir, NULL, NULL); 187 188 cmd_dispatch(argc, argv, NULL); 189 190 return (0); 191 } 192