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 #include <sys/stat.h> 32 33 #include <ctype.h> 34 #include <dlfcn.h> 35 #include <err.h> 36 #include <errno.h> 37 #include <fcntl.h> 38 #include <libutil.h> 39 #include <paths.h> 40 #include <stdbool.h> 41 #include <stddef.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <sysexits.h> 46 #include <unistd.h> 47 48 #include "nvmecontrol.h" 49 50 static void 51 print_bytes(void *data, uint32_t length) 52 { 53 uint32_t i, j; 54 uint8_t *p, *end; 55 56 end = (uint8_t *)data + length; 57 58 for (i = 0; i < length; i++) { 59 p = (uint8_t *)data + (i*16); 60 printf("%03x: ", i*16); 61 for (j = 0; j < 16 && p < end; j++) 62 printf("%02x ", *p++); 63 if (p >= end) 64 break; 65 printf("\n"); 66 } 67 printf("\n"); 68 } 69 70 static void 71 print_dwords(void *data, uint32_t length) 72 { 73 uint32_t *p; 74 uint32_t i, j; 75 76 p = (uint32_t *)data; 77 length /= sizeof(uint32_t); 78 79 for (i = 0; i < length; i+=8) { 80 printf("%03x: ", i*4); 81 for (j = 0; j < 8; j++) 82 printf("%08x ", p[i+j]); 83 printf("\n"); 84 } 85 86 printf("\n"); 87 } 88 89 void 90 print_hex(void *data, uint32_t length) 91 { 92 if (length >= sizeof(uint32_t) || length % sizeof(uint32_t) == 0) 93 print_dwords(data, length); 94 else 95 print_bytes(data, length); 96 } 97 98 int 99 read_controller_data(int fd, struct nvme_controller_data *cdata) 100 { 101 struct nvme_pt_command pt; 102 103 memset(&pt, 0, sizeof(pt)); 104 pt.cmd.opc = NVME_OPC_IDENTIFY; 105 pt.cmd.cdw10 = htole32(1); 106 pt.buf = cdata; 107 pt.len = sizeof(*cdata); 108 pt.is_read = 1; 109 110 if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) 111 return (errno); 112 113 /* Convert data to host endian */ 114 nvme_controller_data_swapbytes(cdata); 115 116 if (nvme_completion_is_error(&pt.cpl)) 117 return (EIO); 118 return (0); 119 } 120 121 int 122 read_namespace_data(int fd, uint32_t nsid, struct nvme_namespace_data *nsdata) 123 { 124 struct nvme_pt_command pt; 125 126 memset(&pt, 0, sizeof(pt)); 127 pt.cmd.opc = NVME_OPC_IDENTIFY; 128 pt.cmd.nsid = htole32(nsid); 129 pt.cmd.cdw10 = htole32(0); 130 pt.buf = nsdata; 131 pt.len = sizeof(*nsdata); 132 pt.is_read = 1; 133 134 if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) 135 return (errno); 136 137 /* Convert data to host endian */ 138 nvme_namespace_data_swapbytes(nsdata); 139 140 if (nvme_completion_is_error(&pt.cpl)) 141 return (EIO); 142 return (0); 143 } 144 145 int 146 open_dev(const char *str, int *fd, int write, int exit_on_error) 147 { 148 char full_path[MAXPATHLEN]; 149 150 if (str[0] == '/') /* Full path */ 151 strlcpy(full_path, str, sizeof(full_path)); 152 else /* Add /dev/ */ 153 snprintf(full_path, sizeof(full_path), _PATH_DEV"%s", str); 154 *fd = open(full_path, write ? O_RDWR : O_RDONLY); 155 if (*fd < 0) { 156 if (exit_on_error) { 157 err(EX_OSFILE, "could not open %s%s", full_path, 158 write ? " for write" : ""); 159 } else 160 return (errno); 161 } 162 163 return (0); 164 } 165 166 void 167 get_nsid(int fd, char **ctrlr_str, uint32_t *nsid) 168 { 169 struct nvme_get_nsid gnsid; 170 171 if (ioctl(fd, NVME_GET_NSID, &gnsid) < 0) 172 err(EX_OSERR, "NVME_GET_NSID ioctl failed"); 173 if (ctrlr_str != NULL) 174 *ctrlr_str = strndup(gnsid.cdev, sizeof(gnsid.cdev)); 175 if (nsid != NULL) 176 *nsid = gnsid.nsid; 177 } 178 179 int 180 main(int argc, char *argv[]) 181 { 182 static char dir[MAXPATHLEN]; 183 184 cmd_init(); 185 186 cmd_load_dir("/lib/nvmecontrol", NULL, NULL); 187 snprintf(dir, MAXPATHLEN, "%s/lib/nvmecontrol", getlocalbase()); 188 cmd_load_dir(dir, NULL, NULL); 189 190 cmd_dispatch(argc, argv, NULL); 191 192 return (0); 193 } 194