#ifndef _LINUX_SCSI_H#define _LINUX_SCSI_H/* * This header file contains public constants and structures used by * the scsi code for linux. *//*    $Header: /usr/src/linux/include/linux/RCS/scsi.h,v 1.3 1993/09/24 12:20:33 drew Exp $    For documentation on the OPCODES, MESSAGES, and SENSE values,    please consult the SCSI standard.*//* *      SCSI opcodes */#define TEST_UNIT_READY       0x00#define REZERO_UNIT           0x01#define REQUEST_SENSE         0x03#define FORMAT_UNIT           0x04#define READ_BLOCK_LIMITS     0x05#define REASSIGN_BLOCKS       0x07#define READ_6                0x08#define WRITE_6               0x0a#define SEEK_6                0x0b#define READ_REVERSE          0x0f#define WRITE_FILEMARKS       0x10#define SPACE                 0x11#define INQUIRY               0x12#define RECOVER_BUFFERED_DATA 0x14#define MODE_SELECT           0x15#define RESERVE               0x16#define RELEASE               0x17#define COPY                  0x18#define ERASE                 0x19#define MODE_SENSE            0x1a#define START_STOP            0x1b#define RECEIVE_DIAGNOSTIC    0x1c#define SEND_DIAGNOSTIC       0x1d#define ALLOW_MEDIUM_REMOVAL  0x1e#define SET_WINDOW            0x24#define READ_CAPACITY         0x25#define READ_10               0x28#define WRITE_10              0x2a#define SEEK_10               0x2b#define WRITE_VERIFY          0x2e#define VERIFY                0x2f#define SEARCH_HIGH           0x30#define SEARCH_EQUAL          0x31#define SEARCH_LOW            0x32#define SET_LIMITS            0x33#define PRE_FETCH             0x34#define READ_POSITION         0x34#define SYNCHRONIZE_CACHE     0x35#define LOCK_UNLOCK_CACHE     0x36#define READ_DEFECT_DATA      0x37#define MEDIUM_SCAN           0x38#define COMPARE               0x39#define COPY_VERIFY           0x3a#define WRITE_BUFFER          0x3b#define READ_BUFFER           0x3c#define UPDATE_BLOCK          0x3d#define READ_LONG             0x3e#define WRITE_LONG            0x3f#define CHANGE_DEFINITION     0x40#define WRITE_SAME            0x41#define READ_TOC              0x43#define LOG_SELECT            0x4c#define LOG_SENSE             0x4d#define MODE_SELECT_10        0x55#define MODE_SENSE_10         0x5a#define MOVE_MEDIUM           0xa5#define READ_12               0xa8#define WRITE_12              0xaa#define WRITE_VERIFY_12       0xae#define SEARCH_HIGH_12        0xb0#define SEARCH_EQUAL_12       0xb1#define SEARCH_LOW_12         0xb2#define READ_ELEMENT_STATUS   0xb8#define SEND_VOLUME_TAG       0xb6#define WRITE_LONG_2          0xea/* *  Status codes */#define GOOD                 0x00#define CHECK_CONDITION      0x01#define CONDITION_GOOD       0x02#define BUSY                 0x04#define INTERMEDIATE_GOOD    0x08#define INTERMEDIATE_C_GOOD  0x0a#define RESERVATION_CONFLICT 0x0c#define COMMAND_TERMINATED   0x11#define QUEUE_FULL           0x14#define STATUS_MASK          0x3e/* *  SENSE KEYS */#define NO_SENSE            0x00#define RECOVERED_ERROR     0x01#define NOT_READY           0x02#define MEDIUM_ERROR        0x03#define HARDWARE_ERROR      0x04#define ILLEGAL_REQUEST     0x05#define UNIT_ATTENTION      0x06#define DATA_PROTECT        0x07#define BLANK_CHECK         0x08#define COPY_ABORTED        0x0a#define ABORTED_COMMAND     0x0b#define VOLUME_OVERFLOW     0x0d#define MISCOMPARE          0x0e/* *  DEVICE TYPES */#define TYPE_DISK           0x00#define TYPE_TAPE           0x01#define TYPE_PROCESSOR      0x03    /* HP scanners use this */#define TYPE_WORM           0x04    /* Treated as ROM by our system */#define TYPE_ROM            0x05#define TYPE_SCANNER        0x06#define TYPE_MOD            0x07    /* Magneto-optical disk - 				     * - treated as TYPE_DISK */#define TYPE_MEDIUM_CHANGER 0x08#define TYPE_ENCLOSURE      0x0d    /* Enclosure Services Device */#define TYPE_NO_LUN         0x7f/* * standard mode-select header prepended to all mode-select commands * * moved here from cdrom.h -- kraxel */struct ccs_modesel_head{    u_char  _r1;    /* reserved */    u_char  medium; /* device-specific medium type */    u_char  _r2;    /* reserved */    u_char  block_desc_length; /* block descriptor length */    u_char  density; /* device-specific density code */    u_char  number_blocks_hi; /* number of blocks in this block desc */    u_char  number_blocks_med;    u_char  number_blocks_lo;    u_char  _r3;    u_char  block_length_hi; /* block length for blocks in this desc */    u_char  block_length_med;    u_char  block_length_lo;};/* *  MESSAGE CODES */#define COMMAND_COMPLETE    0x00#define EXTENDED_MESSAGE    0x01#define     EXTENDED_MODIFY_DATA_POINTER    0x00#define     EXTENDED_SDTR                   0x01#define     EXTENDED_EXTENDED_IDENTIFY      0x02    /* SCSI-I only */#define     EXTENDED_WDTR                   0x03#define SAVE_POINTERS       0x02#define RESTORE_POINTERS    0x03#define DISCONNECT          0x04#define INITIATOR_ERROR     0x05#define ABORT               0x06#define MESSAGE_REJECT      0x07#define NOP                 0x08#define MSG_PARITY_ERROR    0x09#define LINKED_CMD_COMPLETE 0x0a#define LINKED_FLG_CMD_COMPLETE 0x0b#define BUS_DEVICE_RESET    0x0c#define INITIATE_RECOVERY   0x0f            /* SCSI-II only */#define RELEASE_RECOVERY    0x10            /* SCSI-II only */#define SIMPLE_QUEUE_TAG    0x20#define HEAD_OF_QUEUE_TAG   0x21#define ORDERED_QUEUE_TAG   0x22/* * Here are some scsi specific ioctl commands which are sometimes useful. *//* These are a few other constants  only used by scsi  devices */#define SCSI_IOCTL_GET_IDLUN 0x5382/* Used to turn on and off tagged queuing for scsi devices */#define SCSI_IOCTL_TAGGED_ENABLE 0x5383#define SCSI_IOCTL_TAGGED_DISABLE 0x5384/* Used to obtain the host number of a device. */#define SCSI_IOCTL_PROBE_HOST 0x5385/* Used to get the bus number for a device */#define SCSI_IOCTL_GET_BUS_NUMBER 0x5386/* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically * adjust the settings for this buffer only.  This must remain at the end * of the file. * --------------------------------------------------------------------------- * Local variables: * c-indent-level: 4  * c-brace-imaginary-offset: 0 * c-brace-offset: -4 * c-argdecl-indent: 4 * c-label-offset: -4 * c-continued-statement-offset: 4 * c-continued-brace-offset: 0 * indent-tabs-mode: nil * tab-width: 8 * End: */#endif