drivers/net/wan/farsync.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *      FarSync X21 driver for Linux
   4  *
   5  *      Actually sync driver for X.21, V.35 and V.24 on FarSync T-series cards
   6  *
   7  *      Copyright (C) 2001 FarSite Communications Ltd.
   8  *      www.farsite.co.uk
   9  *
  10  *      Author: R.J.Dunlop      <bob.dunlop@farsite.co.uk>
  11  *
  12  *      For the most part this file only contains structures and information
  13  *      that is visible to applications outside the driver. Shared memory
  14  *      layout etc is internal to the driver and described within farsync.c.
  15  *      Overlap exists in that the values used for some fields within the
  16  *      ioctl interface extend into the cards firmware interface so values in
  17  *      this file may not be changed arbitrarily.
  18  */
  19
  20 /*      What's in a name
  21  *
  22  *      The project name for this driver is Oscar. The driver is intended to be
  23  *      used with the FarSite T-Series cards (T2P & T4P) running in the high
  24  *      speed frame shifter mode. This is sometimes referred to as X.21 mode
  25  *      which is a complete misnomer as the card continues to support V.24 and
  26  *      V.35 as well as X.21.
  27  *
  28  *      A short common prefix is useful for routines within the driver to avoid
  29  *      conflict with other similar drivers and I chosen to use "fst_" for this
  30  *      purpose (FarSite T-series).
  31  *
  32  *      Finally the device driver needs a short network interface name. Since
  33  *      "hdlc" is already in use I've chosen the even less informative "sync"
  34  *      for the present.
  35  */
  36 #define FST_NAME                "fst"           /* In debug/info etc */
  37 #define FST_NDEV_NAME           "sync"          /* For net interface */
  38 #define FST_DEV_NAME            "farsync"       /* For misc interfaces */
  39
  40
  41 /*      User version number
  42  *
  43  *      This version number is incremented with each official release of the
  44  *      package and is a simplified number for normal user reference.
  45  *      Individual files are tracked by the version control system and may
  46  *      have individual versions (or IDs) that move much faster than the
  47  *      the release version as individual updates are tracked.
  48  */
  49 #define FST_USER_VERSION        "1.04"
  50
  51
  52 /*      Ioctl call command values
  53  */
  54 #define FSTWRITE        (SIOCDEVPRIVATE+10)
  55 #define FSTCPURESET     (SIOCDEVPRIVATE+11)
  56 #define FSTCPURELEASE   (SIOCDEVPRIVATE+12)
  57 #define FSTGETCONF      (SIOCDEVPRIVATE+13)
  58 #define FSTSETCONF      (SIOCDEVPRIVATE+14)
  59
  60
  61 /*      FSTWRITE
  62  *
  63  *      Used to write a block of data (firmware etc) before the card is running
  64  */
  65 struct fstioc_write {
  66         unsigned int  size;
  67         unsigned int  offset;
  68         unsigned char data[];
  69 };
  70
  71
  72 /*      FSTCPURESET and FSTCPURELEASE
  73  *
  74  *      These take no additional data.
  75  *      FSTCPURESET forces the cards CPU into a reset state and holds it there.
  76  *      FSTCPURELEASE releases the CPU from this reset state allowing it to run,
  77  *      the reset vector should be setup before this ioctl is run.
  78  */
  79
  80 /*      FSTGETCONF and FSTSETCONF
  81  *
  82  *      Get and set a card/ports configuration.
  83  *      In order to allow selective setting of items and for the kernel to
  84  *      indicate a partial status response the first field "valid" is a bitmask
  85  *      indicating which other fields in the structure are valid.
  86  *      Many of the field names in this structure match those used in the
  87  *      firmware shared memory configuration interface and come originally from
  88  *      the NT header file Smc.h
  89  *
  90  *      When used with FSTGETCONF this structure should be zeroed before use.
  91  *      This is to allow for possible future expansion when some of the fields
  92  *      might be used to indicate a different (expanded) structure.
  93  */
  94 struct fstioc_info {
  95         unsigned int   valid;           /* Bits of structure that are valid */
  96         unsigned int   nports;          /* Number of serial ports */
  97         unsigned int   type;            /* Type index of card */
  98         unsigned int   state;           /* State of card */
  99         unsigned int   index;           /* Index of port ioctl was issued on */
 100         unsigned int   smcFirmwareVersion;
 101         unsigned long  kernelVersion;   /* What Kernel version we are working with */
 102         unsigned short lineInterface;   /* Physical interface type */
 103         unsigned char  proto;           /* Line protocol */
 104         unsigned char  internalClock;   /* 1 => internal clock, 0 => external */
 105         unsigned int   lineSpeed;       /* Speed in bps */
 106         unsigned int   v24IpSts;        /* V.24 control input status */
 107         unsigned int   v24OpSts;        /* V.24 control output status */
 108         unsigned short clockStatus;     /* lsb: 0=> present, 1=> absent */
 109         unsigned short cableStatus;     /* lsb: 0=> present, 1=> absent */
 110         unsigned short cardMode;        /* lsb: LED id mode */
 111         unsigned short debug;           /* Debug flags */
 112         unsigned char  transparentMode; /* Not used always 0 */
 113         unsigned char  invertClock;     /* Invert clock feature for syncing */
 114         unsigned char  startingSlot;    /* Time slot to use for start of tx */
 115         unsigned char  clockSource;     /* External or internal */
 116         unsigned char  framing;         /* E1, T1 or J1 */
 117         unsigned char  structure;       /* unframed, double, crc4, f4, f12, */
 118                                         /* f24 f72 */
 119         unsigned char  interface;       /* rj48c or bnc */
 120         unsigned char  coding;          /* hdb3 b8zs */
 121         unsigned char  lineBuildOut;    /* 0, -7.5, -15, -22 */
 122         unsigned char  equalizer;       /* short or lon haul settings */
 123         unsigned char  loopMode;        /* various loopbacks */
 124         unsigned char  range;           /* cable lengths */
 125         unsigned char  txBufferMode;    /* tx elastic buffer depth */
 126         unsigned char  rxBufferMode;    /* rx elastic buffer depth */
 127         unsigned char  losThreshold;    /* Attenuation on LOS signal */
 128         unsigned char  idleCode;        /* Value to send as idle timeslot */
 129         unsigned int   receiveBufferDelay; /* delay thro rx buffer timeslots */
 130         unsigned int   framingErrorCount; /* framing errors */
 131         unsigned int   codeViolationCount; /* code violations */
 132         unsigned int   crcErrorCount;   /* CRC errors */
 133         int            lineAttenuation; /* in dB*/
 134         unsigned short lossOfSignal;
 135         unsigned short receiveRemoteAlarm;
 136         unsigned short alarmIndicationSignal;
 137 };
 138
 139 /* "valid" bitmask */
 140 #define FSTVAL_NONE     0x00000000      /* Nothing valid (firmware not running).
 141                                          * Slight misnomer. In fact nports,
 142                                          * type, state and index will be set
 143                                          * based on hardware detected.
 144                                          */
 145 #define FSTVAL_OMODEM   0x0000001F      /* First 5 bits correspond to the
 146                                          * output status bits defined for
 147                                          * v24OpSts
 148                                          */
 149 #define FSTVAL_SPEED    0x00000020      /* internalClock, lineSpeed, clockStatus
 150                                          */
 151 #define FSTVAL_CABLE    0x00000040      /* lineInterface, cableStatus */
 152 #define FSTVAL_IMODEM   0x00000080      /* v24IpSts */
 153 #define FSTVAL_CARD     0x00000100      /* nports, type, state, index,
 154                                          * smcFirmwareVersion
 155                                          */
 156 #define FSTVAL_PROTO    0x00000200      /* proto */
 157 #define FSTVAL_MODE     0x00000400      /* cardMode */
 158 #define FSTVAL_PHASE    0x00000800      /* Clock phase */
 159 #define FSTVAL_TE1      0x00001000      /* T1E1 Configuration */
 160 #define FSTVAL_DEBUG    0x80000000      /* debug */
 161 #define FSTVAL_ALL      0x00001FFF      /* Note: does not include DEBUG flag */
 162
 163 /* "type" */
 164 #define FST_TYPE_NONE   0               /* Probably should never happen */
 165 #define FST_TYPE_T2P    1               /* T2P X21 2 port card */
 166 #define FST_TYPE_T4P    2               /* T4P X21 4 port card */
 167 #define FST_TYPE_T1U    3               /* T1U X21 1 port card */
 168 #define FST_TYPE_T2U    4               /* T2U X21 2 port card */
 169 #define FST_TYPE_T4U    5               /* T4U X21 4 port card */
 170 #define FST_TYPE_TE1    6               /* T1E1 X21 1 port card */
 171
 172 /* "family" */
 173 #define FST_FAMILY_TXP  0               /* T2P or T4P */
 174 #define FST_FAMILY_TXU  1               /* T1U or T2U or T4U */
 175
 176 /* "state" */
 177 #define FST_UNINIT      0               /* Raw uninitialised state following
 178                                          * system startup */
 179 #define FST_RESET       1               /* Processor held in reset state */
 180 #define FST_DOWNLOAD    2               /* Card being downloaded */
 181 #define FST_STARTING    3               /* Released following download */
 182 #define FST_RUNNING     4               /* Processor running */
 183 #define FST_BADVERSION  5               /* Bad shared memory version detected */
 184 #define FST_HALTED      6               /* Processor flagged a halt */
 185 #define FST_IFAILED     7               /* Firmware issued initialisation failed
 186                                          * interrupt
 187                                          */
 188 /* "lineInterface" */
 189 #define V24             1
 190 #define X21             2
 191 #define V35             3
 192 #define X21D            4
 193 #define T1              5
 194 #define E1              6
 195 #define J1              7
 196
 197 /* "proto" */
 198 #define FST_RAW         4               /* Two way raw packets */
 199 #define FST_GEN_HDLC    5               /* Using "Generic HDLC" module */
 200
 201 /* "internalClock" */
 202 #define INTCLK          1
 203 #define EXTCLK          0
 204
 205 /* "v24IpSts" bitmask */
 206 #define IPSTS_CTS       0x00000001      /* Clear To Send (Indicate for X.21) */
 207 #define IPSTS_INDICATE  IPSTS_CTS
 208 #define IPSTS_DSR       0x00000002      /* Data Set Ready (T2P Port A) */
 209 #define IPSTS_DCD       0x00000004      /* Data Carrier Detect */
 210 #define IPSTS_RI        0x00000008      /* Ring Indicator (T2P Port A) */
 211 #define IPSTS_TMI       0x00000010      /* Test Mode Indicator (Not Supported)*/
 212
 213 /* "v24OpSts" bitmask */
 214 #define OPSTS_RTS       0x00000001      /* Request To Send (Control for X.21) */
 215 #define OPSTS_CONTROL   OPSTS_RTS
 216 #define OPSTS_DTR       0x00000002      /* Data Terminal Ready */
 217 #define OPSTS_DSRS      0x00000004      /* Data Signalling Rate Select (Not
 218                                          * Supported) */
 219 #define OPSTS_SS        0x00000008      /* Select Standby (Not Supported) */
 220 #define OPSTS_LL        0x00000010      /* Maintenance Test (Not Supported) */
 221
 222 /* "cardMode" bitmask */
 223 #define CARD_MODE_IDENTIFY      0x0001
 224
 225 /*
 226  * Constants for T1/E1 configuration
 227  */
 228
 229 /*
 230  * Clock source
 231  */
 232 #define CLOCKING_SLAVE       0
 233 #define CLOCKING_MASTER      1
 234
 235 /*
 236  * Framing
 237  */
 238 #define FRAMING_E1           0
 239 #define FRAMING_J1           1
 240 #define FRAMING_T1           2
 241
 242 /*
 243  * Structure
 244  */
 245 #define STRUCTURE_UNFRAMED   0
 246 #define STRUCTURE_E1_DOUBLE  1
 247 #define STRUCTURE_E1_CRC4    2
 248 #define STRUCTURE_E1_CRC4M   3
 249 #define STRUCTURE_T1_4       4
 250 #define STRUCTURE_T1_12      5
 251 #define STRUCTURE_T1_24      6
 252 #define STRUCTURE_T1_72      7
 253
 254 /*
 255  * Interface
 256  */
 257 #define INTERFACE_RJ48C      0
 258 #define INTERFACE_BNC        1
 259
 260 /*
 261  * Coding
 262  */
 263
 264 #define CODING_HDB3          0
 265 #define CODING_NRZ           1
 266 #define CODING_CMI           2
 267 #define CODING_CMI_HDB3      3
 268 #define CODING_CMI_B8ZS      4
 269 #define CODING_AMI           5
 270 #define CODING_AMI_ZCS       6
 271 #define CODING_B8ZS          7
 272
 273 /*
 274  * Line Build Out
 275  */
 276 #define LBO_0dB              0
 277 #define LBO_7dB5             1
 278 #define LBO_15dB             2
 279 #define LBO_22dB5            3
 280
 281 /*
 282  * Range for long haul t1 > 655ft
 283  */
 284 #define RANGE_0_133_FT       0
 285 #define RANGE_0_40_M         RANGE_0_133_FT
 286 #define RANGE_133_266_FT     1
 287 #define RANGE_40_81_M        RANGE_133_266_FT
 288 #define RANGE_266_399_FT     2
 289 #define RANGE_81_122_M       RANGE_266_399_FT
 290 #define RANGE_399_533_FT     3
 291 #define RANGE_122_162_M       RANGE_399_533_FT
 292 #define RANGE_533_655_FT     4
 293 #define RANGE_162_200_M      RANGE_533_655_FT
 294 /*
 295  * Receive Equaliser
 296  */
 297 #define EQUALIZER_SHORT      0
 298 #define EQUALIZER_LONG       1
 299
 300 /*
 301  * Loop modes
 302  */
 303 #define LOOP_NONE            0
 304 #define LOOP_LOCAL           1
 305 #define LOOP_PAYLOAD_EXC_TS0 2
 306 #define LOOP_PAYLOAD_INC_TS0 3
 307 #define LOOP_REMOTE          4
 308
 309 /*
 310  * Buffer modes
 311  */
 312 #define BUFFER_2_FRAME       0
 313 #define BUFFER_1_FRAME       1
 314 #define BUFFER_96_BIT        2
 315 #define BUFFER_NONE          3
 316
 317 /*      Debug support
 318  *
 319  *      These should only be enabled for development kernels, production code
 320  *      should define FST_DEBUG=0 in order to exclude the code.
 321  *      Setting FST_DEBUG=1 will include all the debug code but in a disabled
 322  *      state, use the FSTSETCONF ioctl to enable specific debug actions, or
 323  *      FST_DEBUG can be set to prime the debug selection.
 324  */
 325 #define FST_DEBUG       0x0000
 326 #if FST_DEBUG
 327
 328 extern int fst_debug_mask;              /* Bit mask of actions to debug, bits
 329                                          * listed below. Note: Bit 0 is used
 330                                          * to trigger the inclusion of this
 331                                          * code, without enabling any actions.
 332                                          */
 333 #define DBG_INIT        0x0002          /* Card detection and initialisation */
 334 #define DBG_OPEN        0x0004          /* Open and close sequences */
 335 #define DBG_PCI         0x0008          /* PCI config operations */
 336 #define DBG_IOCTL       0x0010          /* Ioctls and other config */
 337 #define DBG_INTR        0x0020          /* Interrupt routines (be careful) */
 338 #define DBG_TX          0x0040          /* Packet transmission */
 339 #define DBG_RX          0x0080          /* Packet reception */
 340 #define DBG_CMD         0x0100          /* Port command issuing */
 341
 342 #define DBG_ASS         0xFFFF          /* Assert like statements. Code that
 343                                          * should never be reached, if you see
 344                                          * one of these then I've been an ass
 345                                          */
 346 #endif  /* FST_DEBUG */
 347