include/scsi/sg.h

   1 #ifndef _SCSI_SG_H
   2 #define _SCSI_SG_H
   3
   4 #define SG_DXFER_NONE -1
   5 #define SG_DXFER_TO_DEV -2
   6 #define SG_DXFER_FROM_DEV -3
   7 #define SG_DXFER_TO_FROM_DEV -4
   8 #define SG_FLAG_DIRECT_IO 1
   9 #define SG_FLAG_LUN_INHIBIT 2
  10 #define SG_FLAG_NO_DXFER 0x10000
  11 #define SG_INFO_OK_MASK 0x1
  12 #define SG_INFO_OK 0x0
  13 #define SG_INFO_CHECK 0x1
  14 #define SG_INFO_DIRECT_IO_MASK 0x6
  15 #define SG_INFO_INDIRECT_IO 0x0
  16 #define SG_INFO_DIRECT_IO 0x2
  17 #define SG_INFO_MIXED_IO 0x4
  18 #define SG_EMULATED_HOST 0x2203
  19 #define SG_SET_TRANSFORM 0x2204
  20 #define SG_GET_TRANSFORM 0x2205
  21 #define SG_SET_RESERVED_SIZE 0x2275
  22 #define SG_GET_RESERVED_SIZE 0x2272
  23 #define SG_GET_SCSI_ID 0x2276
  24 #define SG_SET_FORCE_LOW_DMA 0x2279
  25 #define SG_GET_LOW_DMA 0x227a
  26 #define SG_SET_FORCE_PACK_ID 0x227b
  27 #define SG_GET_PACK_ID 0x227c
  28 #define SG_GET_NUM_WAITING 0x227d
  29 #define SG_GET_SG_TABLESIZE 0x227F
  30 #define SG_GET_VERSION_NUM 0x2282
  31 #define SG_SCSI_RESET 0x2284
  32 #define SG_SCSI_RESET_NOTHING 0
  33 #define SG_SCSI_RESET_DEVICE 1
  34 #define SG_SCSI_RESET_BUS 2
  35 #define SG_SCSI_RESET_HOST 3
  36 #define SG_IO 0x2285
  37 #define SG_GET_REQUEST_TABLE 0x2286
  38 #define SG_SET_KEEP_ORPHAN 0x2287
  39 #define SG_GET_KEEP_ORPHAN 0x2288
  40 #define SG_SCATTER_SZ (8 * 4096)
  41 #define SG_DEFAULT_RETRIES 1
  42 #define SG_DEF_FORCE_LOW_DMA 0
  43 #define SG_DEF_FORCE_PACK_ID 0
  44 #define SG_DEF_KEEP_ORPHAN 0
  45 #define SG_DEF_RESERVED_SIZE SG_SCATTER_SZ
  46 #define SG_MAX_QUEUE 16
  47 #define SG_BIG_BUFF SG_DEF_RESERVED_SIZE
  48 #define SG_MAX_SENSE 16
  49 #define SG_SET_TIMEOUT 0x2201
  50 #define SG_GET_TIMEOUT 0x2202
  51 #define SG_GET_COMMAND_Q 0x2270
  52 #define SG_SET_COMMAND_Q 0x2271
  53 #define SG_SET_DEBUG 0x227e
  54 #define SG_NEXT_CMD_LEN 0x2283
  55 #define SG_DEFAULT_TIMEOUT (60*100) /* 60*HZ */
  56 #define SG_DEF_COMMAND_Q 0
  57 #define SG_DEF_UNDERRUN_FLAG 0
  58
  59 typedef struct sg_iovec {
  60         void *iov_base;
  61         unsigned long iov_len;
  62 } sg_iovec_t;
  63
  64 typedef struct sg_io_hdr {
  65         int interface_id;
  66         int dxfer_direction;
  67         unsigned char cmd_len;
  68         unsigned char mx_sb_len;
  69         unsigned short iovec_count;
  70         unsigned dxfer_len;
  71         void *dxferp;
  72         unsigned char *cmdp;
  73         unsigned char *sbp;
  74         unsigned timeout;
  75         unsigned flags;
  76         int pack_id;
  77         void *usr_ptr;
  78         unsigned char status;
  79         unsigned char masked_status;
  80         unsigned char msg_status;
  81         unsigned char sb_len_wr;
  82         unsigned short host_status;
  83         unsigned short driver_status;
  84         int resid;
  85         unsigned int duration;
  86         unsigned int info;
  87 } sg_io_hdr_t;
  88
  89 struct sg_scsi_id {
  90         int host_no;
  91         int channel;
  92         int scsi_id;
  93         int lun;
  94         int scsi_type;
  95         short h_cmd_per_lun;
  96         short d_queue_depth;
  97         int unused[2];
  98 };
  99
 100 typedef struct sg_req_info {
 101         char req_state;
 102         char orphan;
 103         char sg_io_owned;
 104         char problem;
 105         int pack_id;
 106         void *usr_ptr;
 107         unsigned duration;
 108         int unused;
 109 } sg_req_info_t;
 110
 111 typedef struct sg_io_hdr Sg_io_hdr;
 112 typedef struct sg_io_vec Sg_io_vec;
 113 typedef struct sg_scsi_id Sg_scsi_id;
 114 typedef struct sg_req_info Sg_req_info;
 115
 116 struct sg_header {
 117         int pack_len;
 118         int reply_len;
 119         int pack_id;
 120         int result;
 121         unsigned twelve_byte:1;
 122         unsigned target_status:5;
 123         unsigned host_status:8;
 124         unsigned driver_status:8;
 125         unsigned other_flags:10;
 126         unsigned char sense_buffer[SG_MAX_SENSE];
 127 };
 128
 129 #endif