atacmds.h

硬盘各项性能的测试,如温度容量版本健康度型号

/*
 * atacmds.h
 *
 * Home page of code is: http://smartmontools.sourceforge.net
 *
 * Copyright (C) 2002-8 Bruce Allen <[e-mail]>
 * Copyright (C) 1999-2000 Michael Cornwell <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * You should have received a copy of the GNU General Public License
 * (for example COPYING); if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * This code was originally developed as a Senior Thesis by Michael Cornwell
 * at the Concurrent Systems Laboratory (now part of the Storage Systems
 * Research Center), Jack Baskin School of Engineering, University of
 * California, Santa Cruz. http://ssrc.soe.ucsc.edu/
 *
 */

#ifndef ATACMDS_H_
#define ATACMDS_H_

#define ATACMDS_H_CVSID "$Id: atacmds.h,v 1.90 2008/03/04 22:09:47 ballen4705 Exp $\n"

// Macro to check expected size of struct at compile time using a
// dummy typedef.  On size mismatch, compiler reports a negative array
// size.  If you see an error message of this form, it means that the
// #pragma pack(1) pragma below is not having the desired effect on
// your compiler.
#define ASSERT_SIZEOF_STRUCT(s, n) \
  typedef char assert_sizeof_struct_##s[(sizeof(struct s) == (n)) ? 1 : -1]

// Add __attribute__((packed)) if compiler supports it
// because some gcc versions (at least ARM) lack support of #pragma pack()
#ifdef HAVE_ATTR_PACKED
#define ATTR_PACKED __attribute__((packed))
#else
#define ATTR_PACKED
#endif

typedef enum {
  // returns no data, just succeeds or fails
  ENABLE,
  DISABLE,
  AUTOSAVE,
  IMMEDIATE_OFFLINE,
  AUTO_OFFLINE,
  STATUS,       // just says if SMART is working or not
  STATUS_CHECK, // says if disk's SMART status is healthy, or failing
  // return 512 bytes of data:
  READ_VALUES,
  READ_THRESHOLDS,
  READ_LOG,
  IDENTIFY,
  PIDENTIFY,
  // returns 1 byte of data
  CHECK_POWER_MODE,
  // writes 512 bytes of data:
  WRITE_LOG
} smart_command_set;

// ATA Specification Command Register Values (Commands)
#define ATA_IDENTIFY_DEVICE             0xec                                              
#define ATA_IDENTIFY_PACKET_DEVICE      0xa1
#define ATA_SMART_CMD                   0xb0
#define ATA_CHECK_POWER_MODE            0xe5

// ATA Specification Feature Register Values (SMART Subcommands).
// Note that some are obsolete as of ATA-7.
#define ATA_SMART_READ_VALUES           0xd0
#define ATA_SMART_READ_THRESHOLDS       0xd1
#define ATA_SMART_AUTOSAVE              0xd2
#define ATA_SMART_SAVE                  0xd3
#define ATA_SMART_IMMEDIATE_OFFLINE     0xd4
#define ATA_SMART_READ_LOG_SECTOR       0xd5
#define ATA_SMART_WRITE_LOG_SECTOR      0xd6
#define ATA_SMART_WRITE_THRESHOLDS      0xd7
#define ATA_SMART_ENABLE                0xd8
#define ATA_SMART_DISABLE               0xd9
#define ATA_SMART_STATUS                0xda
// SFF 8035i Revision 2 Specification Feature Register Value (SMART
// Subcommand)
#define ATA_SMART_AUTO_OFFLINE          0xdb

// Sector Number values for ATA_SMART_IMMEDIATE_OFFLINE Subcommand
#define OFFLINE_FULL_SCAN               0
#define SHORT_SELF_TEST                 1
#define EXTEND_SELF_TEST                2
#define CONVEYANCE_SELF_TEST            3
#define SELECTIVE_SELF_TEST             4
#define ABORT_SELF_TEST                 127
#define SHORT_CAPTIVE_SELF_TEST         129
#define EXTEND_CAPTIVE_SELF_TEST        130
#define CONVEYANCE_CAPTIVE_SELF_TEST    131
#define SELECTIVE_CAPTIVE_SELF_TEST     132
#define CAPTIVE_MASK                    (0x01<<7)

// Maximum allowed number of SMART Attributes
#define NUMBER_ATA_SMART_ATTRIBUTES     30

// Needed parts of the ATA DRIVE IDENTIFY Structure. Those labeled
// word* are NOT used.
#pragma pack(1)
struct ata_identify_device {
  unsigned short words000_009[10];
  unsigned char  serial_no[20];
  unsigned short words020_022[3];
  unsigned char  fw_rev[8];
  unsigned char  model[40];
  unsigned short words047_079[33];
  unsigned short major_rev_num;
  unsigned short minor_rev_num;
  unsigned short command_set_1;
  unsigned short command_set_2;
  unsigned short command_set_extension;
  unsigned short cfs_enable_1;
  unsigned short word086;
  unsigned short csf_default;
  unsigned short words088_255[168];
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_identify_device, 512);

/* ata_smart_attribute is the vendor specific in SFF-8035 spec */ 
#pragma pack(1)
struct ata_smart_attribute {
  unsigned char id;
  // meaning of flag bits: see MACROS just below
  // WARNING: MISALIGNED!
  unsigned short flags; 
  unsigned char current;
  unsigned char worst;
  unsigned char raw[6];
  unsigned char reserv;
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_attribute, 12);

// MACROS to interpret the flags bits in the previous structure.
// These have not been implemented using bitflags and a union, to make
// it portable across bit/little endian and different platforms.

// 0: Prefailure bit

// From SFF 8035i Revision 2 page 19: Bit 0 (pre-failure/advisory bit)
// - If the value of this bit equals zero, an attribute value less
// than or equal to its corresponding attribute threshold indicates an
// advisory condition where the usage or age of the device has
// exceeded its intended design life period. If the value of this bit
// equals one, an attribute value less than or equal to its
// corresponding attribute threshold indicates a prefailure condition
// where imminent loss of data is being predicted.
#define ATTRIBUTE_FLAGS_PREFAILURE(x) (x & 0x01)

// 1: Online bit 

//  From SFF 8035i Revision 2 page 19: Bit 1 (on-line data collection
// bit) - If the value of this bit equals zero, then the attribute
// value is updated only during off-line data collection
// activities. If the value of this bit equals one, then the attribute
// value is updated during normal operation of the device or during
// both normal operation and off-line testing.
#define ATTRIBUTE_FLAGS_ONLINE(x) (x & 0x02)


// The following are (probably) IBM's, Maxtors and  Quantum's definitions for the
// vendor-specific bits:
// 2: Performance type bit
#define ATTRIBUTE_FLAGS_PERFORMANCE(x) (x & 0x04)

// 3: Errorrate type bit
#define ATTRIBUTE_FLAGS_ERRORRATE(x) (x & 0x08)

// 4: Eventcount bit
#define ATTRIBUTE_FLAGS_EVENTCOUNT(x) (x & 0x10)

// 5: Selfpereserving bit
#define ATTRIBUTE_FLAGS_SELFPRESERVING(x) (x & 0x20)


// Last ten bits are reserved for future use

/* ata_smart_values is format of the read drive Attribute command */
/* see Table 34 of T13/1321D Rev 1 spec (Device SMART data structure) for *some* info */
#pragma pack(1)
struct ata_smart_values {
  unsigned short int revnumber;
  struct ata_smart_attribute vendor_attributes [NUMBER_ATA_SMART_ATTRIBUTES];
  unsigned char offline_data_collection_status;
  unsigned char self_test_exec_status;  //IBM # segments for offline collection
  unsigned short int total_time_to_complete_off_line; // IBM different
  unsigned char vendor_specific_366; // Maxtor & IBM curent segment pointer
  unsigned char offline_data_collection_capability;
  unsigned short int smart_capability;
  unsigned char errorlog_capability;
  unsigned char vendor_specific_371;  // Maxtor, IBM: self-test failure checkpoint see below!
  unsigned char short_test_completion_time;
  unsigned char extend_test_completion_time;
  unsigned char conveyance_test_completion_time;
  unsigned char reserved_375_385[11];
  unsigned char vendor_specific_386_510[125]; // Maxtor bytes 508-509 Attribute/Threshold Revision #
  unsigned char chksum;
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_values, 512);

/* Maxtor, IBM: self-test failure checkpoint byte meaning:
 00 - write test
 01 - servo basic
 02 - servo random
 03 - G-list scan
 04 - Handling damage
 05 - Read scan
*/

/* Vendor attribute of SMART Threshold (compare to ata_smart_attribute above) */
#pragma pack(1)
struct ata_smart_threshold_entry {
  unsigned char id;
  unsigned char threshold;
  unsigned char reserved[10];
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_threshold_entry, 12);

/* Format of Read SMART THreshold Command */
/* Compare to ata_smart_values above */
#pragma pack(1)
struct ata_smart_thresholds_pvt {
  unsigned short int revnumber;
  struct ata_smart_threshold_entry thres_entries[NUMBER_ATA_SMART_ATTRIBUTES];
  unsigned char reserved[149];
  unsigned char chksum;
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_thresholds_pvt, 512);


// Table 42 of T13/1321D Rev 1 spec (Error Data Structure)
#pragma pack(1)
struct ata_smart_errorlog_error_struct {
  unsigned char reserved;
  unsigned char error_register;
  unsigned char sector_count;
  unsigned char sector_number;
  unsigned char cylinder_low;
  unsigned char cylinder_high;
  unsigned char drive_head;
  unsigned char status;
  unsigned char extended_error[19];
  unsigned char state;
  unsigned short timestamp;
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_errorlog_error_struct, 30);


// Table 41 of T13/1321D Rev 1 spec (Command Data Structure)
#pragma pack(1)
struct ata_smart_errorlog_command_struct {
  unsigned char devicecontrolreg;
  unsigned char featuresreg;
  unsigned char sector_count;
  unsigned char sector_number;
  unsigned char cylinder_low;
  unsigned char cylinder_high;
  unsigned char drive_head;
  unsigned char commandreg;
  unsigned int timestamp;
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_errorlog_command_struct, 12);

// Table 40 of T13/1321D Rev 1 spec (Error log data structure)
#pragma pack(1)
struct ata_smart_errorlog_struct {
  struct ata_smart_errorlog_command_struct commands[5];
  struct ata_smart_errorlog_error_struct error_struct;
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_errorlog_struct, 90);

// Table 39 of T13/1321D Rev 1 spec (SMART error log sector)
#pragma pack(1)
struct ata_smart_errorlog {
  unsigned char revnumber;
  unsigned char error_log_pointer;
  struct ata_smart_errorlog_struct errorlog_struct[5];
  unsigned short int ata_error_count;
  unsigned char reserved[57];
  unsigned char checksum;
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_errorlog, 512);

// Table 45 of T13/1321D Rev 1 spec (Self-test log descriptor entry)
#pragma pack(1)
struct ata_smart_selftestlog_struct {
  unsigned char selftestnumber; // Sector number register
  unsigned char selfteststatus;
  unsigned short int timestamp;
  unsigned char selftestfailurecheckpoint;
  unsigned int lbafirstfailure;
  unsigned char vendorspecific[15];
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_selftestlog_struct, 24);

// Table 44 of T13/1321D Rev 1 spec (Self-test log data structure)
#pragma pack(1)
struct ata_smart_selftestlog {
  unsigned short int revnumber;
  struct ata_smart_selftestlog_struct selftest_struct[21];
  unsigned char vendorspecific[2];
  unsigned char mostrecenttest;
  unsigned char reserved[2];
  unsigned char chksum;
} ATTR_PACKED;
#pragma pack()
ASSERT_SIZEOF_STRUCT(ata_smart_selftestlog, 512);

// SMART LOG DIRECTORY Table 52 of T13/1532D Vol 1 Rev 1a
#pragma pack(1)
struct ata_smart_log_entry {
  unsigned char numsectors;