1/* 2 * ata_id - reads product/serial number from ATA drives 3 * 4 * Copyright (C) 2005-2008 Kay Sievers <kay@vrfy.org> 5 * Copyright (C) 2009 Lennart Poettering <lennart@poettering.net> 6 * Copyright (C) 2009-2010 David Zeuthen <zeuthen@gmail.com> 7 * 8 * This program is free software: you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation, either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program. If not, see <http://www.gnu.org/licenses/>. 20 */ 21 22#ifndef _GNU_SOURCE 23#define _GNU_SOURCE 1 24#endif 25 26#include <stdio.h> 27#include <stdlib.h> 28#include <stdint.h> 29#include <unistd.h> 30#include <fcntl.h> 31#include <ctype.h> 32#include <string.h> 33#include <errno.h> 34#include <getopt.h> 35#include <scsi/scsi.h> 36#include <scsi/sg.h> 37#include <scsi/scsi_ioctl.h> 38#include <sys/ioctl.h> 39#include <sys/types.h> 40#include <sys/stat.h> 41#include <linux/types.h> 42#include <linux/hdreg.h> 43#include <linux/fs.h> 44#include <linux/cdrom.h> 45#include <linux/bsg.h> 46#include <arpa/inet.h> 47 48#include "libudev.h" 49#include "libudev-private.h" 50#include "udev-util.h" 51#include "log.h" 52 53#define COMMAND_TIMEOUT_MSEC (30 * 1000) 54 55static int disk_scsi_inquiry_command(int fd, 56 void *buf, 57 size_t buf_len) 58{ 59 uint8_t cdb[6] = { 60 /* 61 * INQUIRY, see SPC-4 section 6.4 62 */ 63 [0] = 0x12, /* OPERATION CODE: INQUIRY */ 64 [3] = (buf_len >> 8), /* ALLOCATION LENGTH */ 65 [4] = (buf_len & 0xff), 66 }; 67 uint8_t sense[32] = {}; 68 struct sg_io_v4 io_v4 = { 69 .guard = 'Q', 70 .protocol = BSG_PROTOCOL_SCSI, 71 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD, 72 .request_len = sizeof(cdb), 73 .request = (uintptr_t) cdb, 74 .max_response_len = sizeof(sense), 75 .response = (uintptr_t) sense, 76 .din_xfer_len = buf_len, 77 .din_xferp = (uintptr_t) buf, 78 .timeout = COMMAND_TIMEOUT_MSEC, 79 }; 80 int ret; 81 82 ret = ioctl(fd, SG_IO, &io_v4); 83 if (ret != 0) { 84 /* could be that the driver doesn't do version 4, try version 3 */ 85 if (errno == EINVAL) { 86 struct sg_io_hdr io_hdr = { 87 .interface_id = 'S', 88 .cmdp = (unsigned char*) cdb, 89 .cmd_len = sizeof (cdb), 90 .dxferp = buf, 91 .dxfer_len = buf_len, 92 .sbp = sense, 93 .mx_sb_len = sizeof(sense), 94 .dxfer_direction = SG_DXFER_FROM_DEV, 95 .timeout = COMMAND_TIMEOUT_MSEC, 96 }; 97 98 ret = ioctl(fd, SG_IO, &io_hdr); 99 if (ret != 0) 100 return ret; 101 102 /* even if the ioctl succeeds, we need to check the return value */ 103 if (!(io_hdr.status == 0 && 104 io_hdr.host_status == 0 && 105 io_hdr.driver_status == 0)) { 106 errno = EIO; 107 return -1; 108 } 109 } else 110 return ret; 111 } 112 113 /* even if the ioctl succeeds, we need to check the return value */ 114 if (!(io_v4.device_status == 0 && 115 io_v4.transport_status == 0 && 116 io_v4.driver_status == 0)) { 117 errno = EIO; 118 return -1; 119 } 120 121 return 0; 122} 123 124static int disk_identify_command(int fd, 125 void *buf, 126 size_t buf_len) 127{ 128 uint8_t cdb[12] = { 129 /* 130 * ATA Pass-Through 12 byte command, as described in 131 * 132 * T10 04-262r8 ATA Command Pass-Through 133 * 134 * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf 135 */ 136 [0] = 0xa1, /* OPERATION CODE: 12 byte pass through */ 137 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */ 138 [2] = 0x2e, /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */ 139 [3] = 0, /* FEATURES */ 140 [4] = 1, /* SECTORS */ 141 [5] = 0, /* LBA LOW */ 142 [6] = 0, /* LBA MID */ 143 [7] = 0, /* LBA HIGH */ 144 [8] = 0 & 0x4F, /* SELECT */ 145 [9] = 0xEC, /* Command: ATA IDENTIFY DEVICE */ 146 }; 147 uint8_t sense[32] = {}; 148 uint8_t *desc = sense + 8; 149 struct sg_io_v4 io_v4 = { 150 .guard = 'Q', 151 .protocol = BSG_PROTOCOL_SCSI, 152 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD, 153 .request_len = sizeof(cdb), 154 .request = (uintptr_t) cdb, 155 .max_response_len = sizeof(sense), 156 .response = (uintptr_t) sense, 157 .din_xfer_len = buf_len, 158 .din_xferp = (uintptr_t) buf, 159 .timeout = COMMAND_TIMEOUT_MSEC, 160 }; 161 int ret; 162 163 ret = ioctl(fd, SG_IO, &io_v4); 164 if (ret != 0) { 165 /* could be that the driver doesn't do version 4, try version 3 */ 166 if (errno == EINVAL) { 167 struct sg_io_hdr io_hdr = { 168 .interface_id = 'S', 169 .cmdp = (unsigned char*) cdb, 170 .cmd_len = sizeof (cdb), 171 .dxferp = buf, 172 .dxfer_len = buf_len, 173 .sbp = sense, 174 .mx_sb_len = sizeof (sense), 175 .dxfer_direction = SG_DXFER_FROM_DEV, 176 .timeout = COMMAND_TIMEOUT_MSEC, 177 }; 178 179 ret = ioctl(fd, SG_IO, &io_hdr); 180 if (ret != 0) 181 return ret; 182 } else 183 return ret; 184 } 185 186 if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) { 187 errno = EIO; 188 return -1; 189 } 190 191 return 0; 192} 193 194static int disk_identify_packet_device_command(int fd, 195 void *buf, 196 size_t buf_len) 197{ 198 uint8_t cdb[16] = { 199 /* 200 * ATA Pass-Through 16 byte command, as described in 201 * 202 * T10 04-262r8 ATA Command Pass-Through 203 * 204 * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf 205 */ 206 [0] = 0x85, /* OPERATION CODE: 16 byte pass through */ 207 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */ 208 [2] = 0x2e, /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */ 209 [3] = 0, /* FEATURES */ 210 [4] = 0, /* FEATURES */ 211 [5] = 0, /* SECTORS */ 212 [6] = 1, /* SECTORS */ 213 [7] = 0, /* LBA LOW */ 214 [8] = 0, /* LBA LOW */ 215 [9] = 0, /* LBA MID */ 216 [10] = 0, /* LBA MID */ 217 [11] = 0, /* LBA HIGH */ 218 [12] = 0, /* LBA HIGH */ 219 [13] = 0, /* DEVICE */ 220 [14] = 0xA1, /* Command: ATA IDENTIFY PACKET DEVICE */ 221 [15] = 0, /* CONTROL */ 222 }; 223 uint8_t sense[32] = {}; 224 uint8_t *desc = sense + 8; 225 struct sg_io_v4 io_v4 = { 226 .guard = 'Q', 227 .protocol = BSG_PROTOCOL_SCSI, 228 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD, 229 .request_len = sizeof (cdb), 230 .request = (uintptr_t) cdb, 231 .max_response_len = sizeof (sense), 232 .response = (uintptr_t) sense, 233 .din_xfer_len = buf_len, 234 .din_xferp = (uintptr_t) buf, 235 .timeout = COMMAND_TIMEOUT_MSEC, 236 }; 237 int ret; 238 239 ret = ioctl(fd, SG_IO, &io_v4); 240 if (ret != 0) { 241 /* could be that the driver doesn't do version 4, try version 3 */ 242 if (errno == EINVAL) { 243 struct sg_io_hdr io_hdr = { 244 .interface_id = 'S', 245 .cmdp = (unsigned char*) cdb, 246 .cmd_len = sizeof (cdb), 247 .dxferp = buf, 248 .dxfer_len = buf_len, 249 .sbp = sense, 250 .mx_sb_len = sizeof (sense), 251 .dxfer_direction = SG_DXFER_FROM_DEV, 252 .timeout = COMMAND_TIMEOUT_MSEC, 253 }; 254 255 ret = ioctl(fd, SG_IO, &io_hdr); 256 if (ret != 0) 257 return ret; 258 } else 259 return ret; 260 } 261 262 if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) { 263 errno = EIO; 264 return -1; 265 } 266 267 return 0; 268} 269 270/** 271 * disk_identify_get_string: 272 * @identify: A block of IDENTIFY data 273 * @offset_words: Offset of the string to get, in words. 274 * @dest: Destination buffer for the string. 275 * @dest_len: Length of destination buffer, in bytes. 276 * 277 * Copies the ATA string from @identify located at @offset_words into @dest. 278 */ 279static void disk_identify_get_string(uint8_t identify[512], 280 unsigned int offset_words, 281 char *dest, 282 size_t dest_len) 283{ 284 unsigned int c1; 285 unsigned int c2; 286 287 while (dest_len > 0) { 288 c1 = identify[offset_words * 2 + 1]; 289 c2 = identify[offset_words * 2]; 290 *dest = c1; 291 dest++; 292 *dest = c2; 293 dest++; 294 offset_words++; 295 dest_len -= 2; 296 } 297} 298 299static void disk_identify_fixup_string(uint8_t identify[512], 300 unsigned int offset_words, 301 size_t len) 302{ 303 disk_identify_get_string(identify, offset_words, 304 (char *) identify + offset_words * 2, len); 305} 306 307static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words) 308{ 309 uint16_t *p; 310 311 p = (uint16_t *) identify; 312 p[offset_words] = le16toh (p[offset_words]); 313} 314 315/** 316 * disk_identify: 317 * @udev: The libudev context. 318 * @fd: File descriptor for the block device. 319 * @out_identify: Return location for IDENTIFY data. 320 * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE. 321 * 322 * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the 323 * device represented by @fd. If successful, then the result will be 324 * copied into @out_identify and @out_is_packet_device. 325 * 326 * This routine is based on code from libatasmart, Copyright 2008 327 * Lennart Poettering, LGPL v2.1. 328 * 329 * Returns: 0 if the data was successfully obtained, otherwise 330 * non-zero with errno set. 331 */ 332static int disk_identify(struct udev *udev, 333 int fd, 334 uint8_t out_identify[512], 335 int *out_is_packet_device) 336{ 337 int ret; 338 uint8_t inquiry_buf[36]; 339 int peripheral_device_type; 340 int all_nul_bytes; 341 int n; 342 int is_packet_device = 0; 343 344 /* init results */ 345 memzero(out_identify, 512); 346 347 /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device 348 * we could accidentally blank media. This is because MMC's BLANK 349 * command has the same op-code (0x61). 350 * 351 * To prevent this from happening we bail out if the device 352 * isn't a Direct Access Block Device, e.g. SCSI type 0x00 353 * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY 354 * command first... libata is handling this via its SCSI 355 * emulation layer. 356 * 357 * This also ensures that we're actually dealing with a device 358 * that understands SCSI commands. 359 * 360 * (Yes, it is a bit perverse that we're tunneling the ATA 361 * command through SCSI and relying on the ATA driver 362 * emulating SCSI well-enough...) 363 * 364 * (See commit 160b069c25690bfb0c785994c7c3710289179107 for 365 * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635 366 * for the original bug-report.) 367 */ 368 ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf)); 369 if (ret != 0) 370 goto out; 371 372 /* SPC-4, section 6.4.2: Standard INQUIRY data */ 373 peripheral_device_type = inquiry_buf[0] & 0x1f; 374 if (peripheral_device_type == 0x05) 375 { 376 is_packet_device = 1; 377 ret = disk_identify_packet_device_command(fd, out_identify, 512); 378 goto check_nul_bytes; 379 } 380 if (peripheral_device_type != 0x00) { 381 ret = -1; 382 errno = EIO; 383 goto out; 384 } 385 386 /* OK, now issue the IDENTIFY DEVICE command */ 387 ret = disk_identify_command(fd, out_identify, 512); 388 if (ret != 0) 389 goto out; 390 391 check_nul_bytes: 392 /* Check if IDENTIFY data is all NUL bytes - if so, bail */ 393 all_nul_bytes = 1; 394 for (n = 0; n < 512; n++) { 395 if (out_identify[n] != '\0') { 396 all_nul_bytes = 0; 397 break; 398 } 399 } 400 401 if (all_nul_bytes) { 402 ret = -1; 403 errno = EIO; 404 goto out; 405 } 406 407out: 408 if (out_is_packet_device != NULL) 409 *out_is_packet_device = is_packet_device; 410 return ret; 411} 412 413int main(int argc, char *argv[]) 414{ 415 _cleanup_udev_unref_ struct udev *udev = NULL; 416 struct hd_driveid id; 417 union { 418 uint8_t byte[512]; 419 uint16_t wyde[256]; 420 uint64_t octa[64]; 421 } identify; 422 char model[41]; 423 char model_enc[256]; 424 char serial[21]; 425 char revision[9]; 426 const char *node = NULL; 427 int export = 0; 428 _cleanup_close_ int fd = -1; 429 uint16_t word; 430 int is_packet_device = 0; 431 static const struct option options[] = { 432 { "export", no_argument, NULL, 'x' }, 433 { "help", no_argument, NULL, 'h' }, 434 {} 435 }; 436 437 log_open(); 438 439 udev = udev_new(); 440 if (udev == NULL) 441 return 0; 442 443 while (1) { 444 int option; 445 446 option = getopt_long(argc, argv, "xh", options, NULL); 447 if (option == -1) 448 break; 449 450 switch (option) { 451 case 'x': 452 export = 1; 453 break; 454 case 'h': 455 printf("Usage: ata_id [--export] [--help] <device>\n" 456 " -x,--export print values as environment keys\n" 457 " -h,--help print this help text\n\n"); 458 return 0; 459 } 460 } 461 462 node = argv[optind]; 463 if (node == NULL) { 464 log_error("no node specified"); 465 return 1; 466 } 467 468 fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC); 469 if (fd < 0) { 470 log_error("unable to open '%s'", node); 471 return 1; 472 } 473 474 if (disk_identify(udev, fd, identify.byte, &is_packet_device) == 0) { 475 /* 476 * fix up only the fields from the IDENTIFY data that we are going to 477 * use and copy it into the hd_driveid struct for convenience 478 */ 479 disk_identify_fixup_string(identify.byte, 10, 20); /* serial */ 480 disk_identify_fixup_string(identify.byte, 23, 8); /* fwrev */ 481 disk_identify_fixup_string(identify.byte, 27, 40); /* model */ 482 disk_identify_fixup_uint16(identify.byte, 0); /* configuration */ 483 disk_identify_fixup_uint16(identify.byte, 75); /* queue depth */ 484 disk_identify_fixup_uint16(identify.byte, 76); /* SATA capabilities */ 485 disk_identify_fixup_uint16(identify.byte, 82); /* command set supported */ 486 disk_identify_fixup_uint16(identify.byte, 83); /* command set supported */ 487 disk_identify_fixup_uint16(identify.byte, 84); /* command set supported */ 488 disk_identify_fixup_uint16(identify.byte, 85); /* command set supported */ 489 disk_identify_fixup_uint16(identify.byte, 86); /* command set supported */ 490 disk_identify_fixup_uint16(identify.byte, 87); /* command set supported */ 491 disk_identify_fixup_uint16(identify.byte, 89); /* time required for SECURITY ERASE UNIT */ 492 disk_identify_fixup_uint16(identify.byte, 90); /* time required for enhanced SECURITY ERASE UNIT */ 493 disk_identify_fixup_uint16(identify.byte, 91); /* current APM values */ 494 disk_identify_fixup_uint16(identify.byte, 94); /* current AAM value */ 495 disk_identify_fixup_uint16(identify.byte, 108); /* WWN */ 496 disk_identify_fixup_uint16(identify.byte, 109); /* WWN */ 497 disk_identify_fixup_uint16(identify.byte, 110); /* WWN */ 498 disk_identify_fixup_uint16(identify.byte, 111); /* WWN */ 499 disk_identify_fixup_uint16(identify.byte, 128); /* device lock function */ 500 disk_identify_fixup_uint16(identify.byte, 217); /* nominal media rotation rate */ 501 memcpy(&id, identify.byte, sizeof id); 502 } else { 503 /* If this fails, then try HDIO_GET_IDENTITY */ 504 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) { 505 log_debug_errno(errno, "HDIO_GET_IDENTITY failed for '%s': %m", node); 506 return 2; 507 } 508 } 509 510 memcpy(model, id.model, 40); 511 model[40] = '\0'; 512 udev_util_encode_string(model, model_enc, sizeof(model_enc)); 513 util_replace_whitespace((char *) id.model, model, 40); 514 util_replace_chars(model, NULL); 515 util_replace_whitespace((char *) id.serial_no, serial, 20); 516 util_replace_chars(serial, NULL); 517 util_replace_whitespace((char *) id.fw_rev, revision, 8); 518 util_replace_chars(revision, NULL); 519 520 if (export) { 521 /* Set this to convey the disk speaks the ATA protocol */ 522 printf("ID_ATA=1\n"); 523 524 if ((id.config >> 8) & 0x80) { 525 /* This is an ATAPI device */ 526 switch ((id.config >> 8) & 0x1f) { 527 case 0: 528 printf("ID_TYPE=cd\n"); 529 break; 530 case 1: 531 printf("ID_TYPE=tape\n"); 532 break; 533 case 5: 534 printf("ID_TYPE=cd\n"); 535 break; 536 case 7: 537 printf("ID_TYPE=optical\n"); 538 break; 539 default: 540 printf("ID_TYPE=generic\n"); 541 break; 542 } 543 } else { 544 printf("ID_TYPE=disk\n"); 545 } 546 printf("ID_BUS=ata\n"); 547 printf("ID_MODEL=%s\n", model); 548 printf("ID_MODEL_ENC=%s\n", model_enc); 549 printf("ID_REVISION=%s\n", revision); 550 if (serial[0] != '\0') { 551 printf("ID_SERIAL=%s_%s\n", model, serial); 552 printf("ID_SERIAL_SHORT=%s\n", serial); 553 } else { 554 printf("ID_SERIAL=%s\n", model); 555 } 556 557 if (id.command_set_1 & (1<<5)) { 558 printf("ID_ATA_WRITE_CACHE=1\n"); 559 printf("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0); 560 } 561 if (id.command_set_1 & (1<<10)) { 562 printf("ID_ATA_FEATURE_SET_HPA=1\n"); 563 printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0); 564 565 /* 566 * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address 567 * so it is easy to check whether the protected area is in use. 568 */ 569 } 570 if (id.command_set_1 & (1<<3)) { 571 printf("ID_ATA_FEATURE_SET_PM=1\n"); 572 printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0); 573 } 574 if (id.command_set_1 & (1<<1)) { 575 printf("ID_ATA_FEATURE_SET_SECURITY=1\n"); 576 printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0); 577 printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2); 578 if ((id.cfs_enable_1 & (1<<1))) /* enabled */ { 579 if (id.dlf & (1<<8)) 580 printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n"); 581 else 582 printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n"); 583 } 584 if (id.dlf & (1<<5)) 585 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2); 586 if (id.dlf & (1<<4)) 587 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n"); 588 if (id.dlf & (1<<3)) 589 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n"); 590 if (id.dlf & (1<<2)) 591 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n"); 592 } 593 if (id.command_set_1 & (1<<0)) { 594 printf("ID_ATA_FEATURE_SET_SMART=1\n"); 595 printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0); 596 } 597 if (id.command_set_2 & (1<<9)) { 598 printf("ID_ATA_FEATURE_SET_AAM=1\n"); 599 printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0); 600 printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8); 601 printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff); 602 } 603 if (id.command_set_2 & (1<<5)) { 604 printf("ID_ATA_FEATURE_SET_PUIS=1\n"); 605 printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0); 606 } 607 if (id.command_set_2 & (1<<3)) { 608 printf("ID_ATA_FEATURE_SET_APM=1\n"); 609 printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0); 610 if ((id.cfs_enable_2 & (1<<3))) 611 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff); 612 } 613 if (id.command_set_2 & (1<<0)) 614 printf("ID_ATA_DOWNLOAD_MICROCODE=1\n"); 615 616 /* 617 * Word 76 indicates the capabilities of a SATA device. A PATA device shall set 618 * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then 619 * the device does not claim compliance with the Serial ATA specification and words 620 * 76 through 79 are not valid and shall be ignored. 621 */ 622 623 word = identify.wyde[76]; 624 if (word != 0x0000 && word != 0xffff) { 625 printf("ID_ATA_SATA=1\n"); 626 /* 627 * If bit 2 of word 76 is set to one, then the device supports the Gen2 628 * signaling rate of 3.0 Gb/s (see SATA 2.6). 629 * 630 * If bit 1 of word 76 is set to one, then the device supports the Gen1 631 * signaling rate of 1.5 Gb/s (see SATA 2.6). 632 */ 633 if (word & (1<<2)) 634 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n"); 635 if (word & (1<<1)) 636 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n"); 637 } 638 639 /* Word 217 indicates the nominal media rotation rate of the device */ 640 word = identify.wyde[217]; 641 if (word == 0x0001) 642 printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */ 643 else if (word >= 0x0401 && word <= 0xfffe) 644 printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word); 645 646 /* 647 * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier 648 * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE. 649 * All other values are reserved. 650 */ 651 word = identify.wyde[108]; 652 if ((word & 0xf000) == 0x5000) { 653 uint64_t wwwn; 654 655 wwwn = identify.wyde[108]; 656 wwwn <<= 16; 657 wwwn |= identify.wyde[109]; 658 wwwn <<= 16; 659 wwwn |= identify.wyde[110]; 660 wwwn <<= 16; 661 wwwn |= identify.wyde[111]; 662 printf("ID_WWN=0x%1$" PRIx64 "\n" 663 "ID_WWN_WITH_EXTENSION=0x%1$" PRIx64 "\n", 664 wwwn); 665 } 666 667 /* from Linux's include/linux/ata.h */ 668 if (identify.wyde[0] == 0x848a || 669 identify.wyde[0] == 0x844a || 670 (identify.wyde[83] & 0xc004) == 0x4004) 671 printf("ID_ATA_CFA=1\n"); 672 } else { 673 if (serial[0] != '\0') 674 printf("%s_%s\n", model, serial); 675 else 676 printf("%s\n", model); 677 } 678 679 return 0; 680} 681