FreeBSD/Linux Kernel Cross Reference
sys/scsi/scsi_disk.h

     /*      $OpenBSD: scsi_disk.h,v 1.43 2022/01/11 23:10:11 jsg Exp $      */
     /*      $NetBSD: scsi_disk.h,v 1.10 1996/07/05 16:19:05 christos Exp $  */
     
     /*
      * SCSI interface description
      */
     
     /*
      * Some lines of this file come from a file of the name "scsi.h"
     * distributed by OSF as part of mach2.5,
     *  so the following disclaimer has been kept.
     *
     * Copyright 1990 by Open Software Foundation,
     * Grenoble, FRANCE
     *
     *              All Rights Reserved
     *
     *   Permission to use, copy, modify, and distribute this software and
     * its documentation for any purpose and without fee is hereby granted,
     * provided that the above copyright notice appears in all copies and
     * that both the copyright notice and this permission notice appear in
     * supporting documentation, and that the name of OSF or Open Software
     * Foundation not be used in advertising or publicity pertaining to
     * distribution of the software without specific, written prior
     * permission.
     *
     *   OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
     * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
     * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
     * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
     * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
     * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
     * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     */
    
    /*
     * Largely written by Julian Elischer (julian@tfs.com)
     * for TRW Financial Systems.
     *
     * TRW Financial Systems, in accordance with their agreement with Carnegie
     * Mellon University, makes this software available to CMU to distribute
     * or use in any manner that they see fit as long as this message is kept with
     * the software. For this reason TFS also grants any other persons or
     * organisations permission to use or modify this software.
     *
     * TFS supplies this software to be publicly redistributed
     * on the understanding that TFS is not responsible for the correct
     * functioning of this software in any circumstances.
     *
     * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
     */
    
    /*
     * SCSI command format
     */
    
    #ifndef _SCSI_SCSI_DISK_H
    #define _SCSI_SCSI_DISK_H
    
    /*
     * XXX Is this also used by ATAPI?
     */
    #define FORMAT_UNIT             0x04
    struct scsi_format_unit {
            u_int8_t opcode;
            u_int8_t flags;
    #define SFU_DLF_MASK    0x07
    #define SFU_CMPLST      0x08
    #define SFU_FMTDATA     0x10
            u_int8_t vendor_specific;
            u_int8_t interleave[2];
            u_int8_t control;
    };
    
    /*
     * If the FmtData bit is set, a FORMAT UNIT parameter list is transferred
     * to the target during the DATA OUT phase.  The parameter list includes
     *
     *      Defect list header
     *      Initialization pattern descriptor (if any)
     *      Defect descriptor(s) (if any)
     */
    
    struct scsi_format_unit_defect_list_header {
            u_int8_t reserved;
            u_int8_t flags;
    #define DLH_VS          0x01            /* vendor specific */
    #define DLH_IMMED       0x02            /* immediate return */
    #define DLH_DSP         0x04            /* disable saving parameters */
    #define DLH_IP          0x08            /* initialization pattern */
    #define DLH_STPF        0x10            /* stop format */
    #define DLH_DCRT        0x20            /* disable certification */
    #define DLH_DPRY        0x40            /* disable primary */
    #define DLH_FOV         0x80            /* format options valid */
            u_int8_t defect_lst_len[2];
    };
    
    /*
     * See Table 117 of the SCSI-2 specification for a description of
    * the IP modifier.
    */
   struct scsi_initialization_pattern_descriptor {
           u_int8_t ip_modifier;
           u_int8_t pattern_type;
   #define IP_TYPE_DEFAULT         0x01
   #define IP_TYPE_REPEAT          0x01
                                   /* 0x02 -> 0x7f: reserved */
                                   /* 0x80 -> 0xff: vendor-specific */
           u_int8_t pattern_length[2];
   #if 0
           u_int8_t pattern[...];
   #endif /* 0 */
   };
   
   /*
    * Defect descriptors.  These are used as the defect lists in the FORMAT UNIT
    * and READ DEFECT DATA commands, and as the translate page of the
    * SEND DIAGNOSTIC and RECEIVE DIAGNOSTIC RESULTS commands.
    */
   
   /* Block format */
   struct scsi_defect_descriptor_bf {
           u_int8_t block_address[4];
   };
   
   /* Bytes from index format */
   struct scsi_defect_descriptor_bfif {
           u_int8_t cylinder[2];
           u_int8_t head;
           u_int8_t bytes_from_index[2];
   };
   
   /* Physical sector format */
   struct scsi_defect_descriptor_psf {
           u_int8_t cylinder[2];
           u_int8_t head;
           u_int8_t sector[2];
   };
   
   
   struct scsi_reassign_blocks {
           u_int8_t opcode;
           u_int8_t byte2;
           u_int8_t unused[3];
           u_int8_t control;
   };
   
   /*
    * XXX Is this also used by ATAPI?
    */
   #define REZERO_UNIT             0x01
   struct scsi_rezero_unit {
           u_int8_t opcode;
           u_int8_t byte2;
           u_int8_t reserved[3];
           u_int8_t control;
   };
   
   struct scsi_rw {
           u_int8_t opcode;
           u_int8_t addr[3];
   #define SRW_TOPADDR     0x1F    /* only 5 bits here */
           u_int8_t length;
           u_int8_t control;
   };
   
   struct scsi_rw_10 {
           u_int8_t opcode;
           u_int8_t byte2;
   #define SRWB_RELADDR    0x01
           u_int8_t addr[4];
           u_int8_t reserved;
           u_int8_t length[2];
           u_int8_t control;
   };
   
   struct scsi_rw_12 {
           u_int8_t opcode;
           u_int8_t byte2;
           u_int8_t addr[4];
           u_int8_t length[4];
           u_int8_t reserved;
           u_int8_t control;
   };
   
   struct scsi_rw_16 {
           u_int8_t opcode;
           u_int8_t byte2;
           u_int8_t addr[8];
           u_int8_t length[4];
           u_int8_t reserved;
           u_int8_t control;
   };
   
   struct scsi_write_same_10 {
           u_int8_t opcode;
           u_int8_t flags;
   #define WRITE_SAME_F_LBDATA     (1 << 1)
   #define WRITE_SAME_F_PBDATA     (1 << 2)
           u_int8_t lba[4];
           u_int8_t group_number;
           u_int8_t length[2];
           u_int8_t control;
   };
   
   struct scsi_write_same_16 {
           u_int8_t opcode;
           u_int8_t flags;
   /* includes WRITE SAME 10 flags */
   #define WRITE_SAME_F_UNMAP      (1 << 3)
   #define WRITE_SAME_F_ANCHOR     (1 << 4)
           u_int8_t lba[8];
           u_int8_t length[4];
           u_int8_t group_number;
           u_int8_t control;
   };
   
   struct scsi_unmap {
           u_int8_t opcode;
           u_int8_t anchor;
           u_int8_t _reserved[4];
           u_int8_t group_number;
           u_int8_t list_len[2];
           u_int8_t control;
   };
   
   struct scsi_unmap_data {
           u_int8_t data_length[2];
           u_int8_t desc_length[2];
           u_int8_t _reserved[4];
   
           /* followed by struct scsi_unmap_desc */
   };
   
   struct scsi_unmap_desc {
           u_int8_t logical_addr[8];
           u_int8_t logical_blocks[4];
           u_int8_t _reserved[4];
   };
   
   struct scsi_read_capacity {
           u_int8_t opcode;
           u_int8_t byte2;
           u_int8_t addr[4];
           u_int8_t unused[3];
           u_int8_t control;
   };
   
   struct scsi_read_capacity_16 {
           u_int8_t opcode;
           u_int8_t byte2;
   #define SRC16_SERVICE_ACTION    0x10
           u_int8_t addr[8];
           u_int8_t length[4];
           u_int8_t reserved;
           u_int8_t control;
   };
   
   struct scsi_start_stop {
           u_int8_t opcode;
           u_int8_t byte2;
           u_int8_t unused[2];
           u_int8_t how;
   #define SSS_STOP                0x00
   #define SSS_START               0x01
   #define SSS_LOEJ                0x02
           u_int8_t control;
   };
   
   
   /*
    * XXX Does ATAPI have an equivalent?
    */
   struct scsi_synchronize_cache {
           u_int8_t opcode;
           u_int8_t flags;
   #define SSC_RELADR      0x01
   #define SSC_IMMED       0x02
           u_int8_t addr[4];
           u_int8_t reserved;
           u_int8_t length[2];
           u_int8_t control;
   };
   
   
   
   /*
    * Disk specific opcodes
    */
   #define REASSIGN_BLOCKS         0x07
   #define READ_COMMAND            0x08
   #define WRITE_COMMAND           0x0a
   #define READ_CAPACITY           0x25
   #define READ_CAPACITY_16        0x9e
   #define READ_10                 0x28
   #define WRITE_10                0x2a
   #define READ_12                 0xa8
   #define WRITE_12                0xaa
   #define READ_16                 0x88
   #define WRITE_16                0x8a
   #define SYNCHRONIZE_CACHE       0x35
   #define WRITE_SAME_10           0x41
   #define WRITE_SAME_16           0x93
   #define UNMAP                   0x42
   
   
   struct scsi_reassign_blocks_data {
           u_int8_t reserved[2];
           u_int8_t length[2];
           struct {
                   u_int8_t dlbaddr[4];
           } defect_descriptor[1];
   };
   
   /* Only the lower 6 bits of the pg_code field are used for page #. */
   #define PAGE_DISK_FORMAT        3
   #define PAGE_RIGID_GEOMETRY     4
   #define PAGE_FLEX_GEOMETRY      5
   #define PAGE_REDUCED_GEOMETRY   6
   #define PAGE_CACHING_MODE       8
   
   struct page_disk_format {
           u_int8_t pg_code;       /* page code (should be 3) */
           u_int8_t pg_length;     /* page length (should be 0x16) */
           u_int8_t trk_z[2];      /* tracks per zone */
           u_int8_t alt_sec[2];    /* alternate sectors per zone */
           u_int8_t alt_trk_z[2];  /* alternate tracks per zone */
           u_int8_t alt_trk_v[2];  /* alternate tracks per volume */
           u_int8_t ph_sec_t[2];   /* physical sectors per track */
           u_int8_t bytes_s[2];    /* bytes per sector */
           u_int8_t interleave[2]; /* interleave */
           u_int8_t trk_skew[2];   /* track skew factor */
           u_int8_t cyl_skew[2];   /* cylinder skew */
           u_int8_t flags;         /* various */
   #define DISK_FMT_SURF   0x10
   #define DISK_FMT_RMB    0x20
   #define DISK_FMT_HSEC   0x40
   #define DISK_FMT_SSEC   0x80
           u_int8_t reserved1;
           u_int8_t reserved2;
           u_int8_t reserved3;
   };
   
   struct page_rigid_geometry {
           u_int8_t pg_code;       /* page code (should be 4) */
           u_int8_t pg_length;     /* page length (should be 0x12 or 0x16) */
           u_int8_t ncyl[3];       /* number of cylinders */
           u_int8_t nheads;        /* number of heads */
           u_int8_t st_cyl_wp[3];  /* starting cyl., write precomp */
           u_int8_t st_cyl_rwc[3]; /* starting cyl., red. write cur */
           u_int8_t driv_step[2];  /* drive step rate */
           u_int8_t land_zone[3];  /* landing zone cylinder */
           u_int8_t sp_sync_ctl;   /* spindle synch control */
   #define SPINDLE_SYNCH_MASK      0x03    /* mask of valid bits */
   #define SPINDLE_SYNCH_NONE      0x00    /* synch disabled or not supported */
   #define SPINDLE_SYNCH_SLAVE     0x01    /* disk is a slave */
   #define SPINDLE_SYNCH_MASTER    0x02    /* disk is a master */
   #define SPINDLE_SYNCH_MCONTROL  0x03    /* disk is a master control */
           u_int8_t rot_offset;    /* rotational offset (for spindle synch) */
           u_int8_t reserved1;
           u_int8_t rpm[2];        /* media rotation speed */
           u_int8_t reserved2;
           u_int8_t reserved3;
   };
   
   struct page_flex_geometry {
           u_int8_t pg_code;       /* page code (should be 5) */
           u_int8_t pg_length;     /* page length (should be 0x1a or 0x1e) */
           u_int8_t xfr_rate[2];
           u_int8_t nheads;        /* number of heads */
           u_int8_t ph_sec_tr;     /* physical sectors per track */
           u_int8_t bytes_s[2];    /* bytes per sector */
           u_int8_t ncyl[2];       /* number of cylinders */
           u_int8_t st_cyl_wp[2];  /* start cyl., write precomp */
           u_int8_t st_cyl_rwc[2]; /* start cyl., red. write cur */
           u_int8_t driv_step[2];  /* drive step rate */
           u_int8_t driv_step_w;   /* drive step pulse width */
           u_int8_t head_settle[2];/* head settle delay */
           u_int8_t motor_on;      /* motor on delay */
           u_int8_t motor_off;     /* motor off delay */
           u_int8_t flags;         /* various flags */
   #define MOTOR_ON                0x20    /* motor on (pin 16)? */
   #define START_AT_SECTOR_1       0x40    /* start at sector 1  */
   #define READY_VALID             0x20    /* RDY (pin 34) valid */
           u_int8_t step_p_cyl;    /* step pulses per cylinder */
           u_int8_t write_pre;     /* write precompensation */
           u_int8_t head_load;     /* head load delay */
           u_int8_t head_unload;   /* head unload delay */
           u_int8_t pin_34_2;      /* pin 34 (6) pin 2 (7/11) definition */
           u_int8_t pin_4_1;       /* pin 4 (8/9) pin 1 (13) definition */
           u_int8_t rpm[2];        /* media rotation speed */
           u_int8_t reserved1;
           u_int8_t reserved2;
   };
   
   struct page_reduced_geometry {
           u_int8_t pg_code;       /* page code (should be 6) */
           u_int8_t pg_length;     /* page length (should be 0x0B) */
           u_int8_t wcd;           /* bit 0 = write cache disable */
           u_int8_t bytes_s[2];    /* bytes per sector */
           u_int8_t sectors[5];    /* total number of sectors */
           u_int8_t pow_perf;      /* power/performance level */
           u_int8_t flags;         /* various */
   #define LOCK_DISABLED   0x1
   #define FORMAT_DISABLED 0x2
   #define WRITE_DISABLED  0x4
   #define READ_DISABLED   0x8
           u_int8_t reserved;
   };
   
   struct page_caching_mode {
           u_int8_t pg_code;       /* page code (should be 8) */
           u_int8_t pg_length;     /* page length (should be 0x12) */
           u_int8_t flags;
   #define PG_CACHE_FL_RCD         (1<<0)
   #define PG_CACHE_FL_MF          (1<<1)
   #define PG_CACHE_FL_WCE         (1<<2)
   #define PG_CACHE_FL_SIZE        (1<<3)
   #define PG_CACHE_FL_DISC        (1<<4)
   #define PG_CACHE_FL_CAP         (1<<5)
   #define PG_CACHE_FL_ABPF        (1<<6)
   #define PG_CACHE_FL_IC          (1<<7)
           u_int8_t priority;
   #define PG_CACHE_PRI_DEMAND(_f)         ((_f) & 0x0f)
   #define PG_CACHE_PRI_WRITE(_f)          (((_f) >> 4) & 0x0f)
           u_int8_t dis_prefetch_tl[2];
           u_int8_t min_prefetch[2];
           u_int8_t max_prefetch[2];
           u_int8_t max_prefetch_ceil[2];
   };
   
   #define SI_PG_DISK_LIMITS       0xb0 /* block limits */
   #define SI_PG_DISK_INFO         0xb1 /* device characteristics */
   #define SI_PG_DISK_THIN         0xb2 /* thin provisioning */
   
   struct scsi_vpd_disk_limits {
           struct scsi_vpd_hdr hdr;
   #define SI_PG_DISK_LIMITS_LEN           0x10
   #define SI_PG_DISK_LIMITS_LEN_THIN      0x3c
   
           u_int8_t                _reserved1[1];
           u_int8_t                max_comp_wr_len;
           u_int8_t                optimal_xfer_granularity[2];
   
           u_int8_t                max_xfer_len[4];
   
           u_int8_t                optimal_xfer[4];
   
           u_int8_t                max_xd_prefetch_len[4];
   
           u_int8_t                max_unmap_lba_count[4];
   
           u_int8_t                max_unmap_desc_count[4];
   
           u_int8_t                optimal_unmap_granularity[4];
   
           u_int8_t                unmap_granularity_align[4];
   #define SI_PG_DISK_LIMITS_UGAVALID      (1U << 31)
   
           u_int8_t                _reserved2[28];
   };
   
   struct scsi_vpd_disk_info {
           struct scsi_vpd_hdr     hdr;
           u_int8_t                rpm[2];
   #define VPD_DISK_INFO_RPM_UNDEF         0x0000
   #define VPD_DISK_INFO_RPM_NONE          0x0001
           u_int8_t                _reserved1[1];
           u_int8_t                form_factor;
   #define VPD_DISK_INFO_FORM_MASK         0xf
   #define VPD_DISK_INFO_FORM_UNDEF        0x0
   #define VPD_DISK_INFO_FORM_5_25         0x1
   #define VPD_DISK_INFO_FORM_3_5          0x2
   #define VPD_DISK_INFO_FORM_2_5          0x3
   #define VPD_DISK_INFO_FORM_1_8          0x4
   #define VPD_DISK_INFO_FORM_LT_1_8       0x5
           u_int8_t                _reserved2[56];
   };
   
   struct scsi_vpd_disk_thin {
           struct scsi_vpd_hdr     hdr;
   
           u_int8_t                threshold_exponent;
           u_int8_t                flags;
   #define VPD_DISK_THIN_DP                (1 << 0) /* descriptor present */
   #define VPD_DISK_THIN_ANC_SUP           (0x7 << 1)
   #define VPD_DISK_THIN_ANC_SUP_NO        (0x0 << 1)
   #define VPD_DISK_THIN_ANC_SUP_YES       (0x1 << 1)
   #define VPD_DISK_THIN_TPWS              (1 << 6) /* WRITE SAME 16 */
   #define VPD_DISK_THIN_TPU               (1 << 7) /* UNMAP */
           u_int8_t                _reserved1[2];
   
           /* followed by a designation descriptor if DP is set */
   };
   
   #endif /* _SCSI_SCSI_DISK_H */

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