sys/dev/serial/si/si.h

   1 /*
   2  * Device driver for Specialix range (SI/XIO) of serial line multiplexors.
   3  * 'C' definitions for Specialix serial multiplex driver.
   4  *
   5  * Copyright (C) 1990, 1992, 1998 Specialix International,
   6  * Copyright (C) 1993, Andy Rutter <andy@acronym.co.uk>
   7  * Copyright (C) 1995, Peter Wemm <peter@netplex.com.au>
   8  *
   9  * Derived from:        SunOS 4.x version
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notices, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notices, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by Andy Rutter of
  22  *      Advanced Methods and Tools Ltd. based on original information
  23  *      from Specialix International.
  24  * 4. Neither the name of Advanced Methods and Tools, nor Specialix
  25  *    International may be used to endorse or promote products derived from
  26  *    this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
  29  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  30  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
  31  * NO EVENT SHALL THE AUTHORS BE LIABLE.
  32  *
  33  * $FreeBSD: src/sys/dev/si/si.h,v 1.16 2000/01/24 07:24:00 peter Exp $
  34  * $DragonFly: src/sys/dev/serial/si/si.h,v 1.4 2004/09/19 01:20:42 dillon Exp $
  35  */
  36
  37 #include <sys/callout.h>
  38 #include <sys/ioccom.h>
  39
  40 /*
  41  * Macro to turn a device number into various parameters, and test for
  42  * CONTROL device.
  43  * max of 4 controllers with up to 32 ports per controller.
  44  * minor device allocation is:
  45  * adapter      port
  46  *   0          0-31
  47  *   1          32-63
  48  *   2          64-95
  49  *   3          96-127
  50  */
  51 #define SI_MAXPORTPERCARD       32
  52 #define SI_MAXCONTROLLER        4
  53
  54
  55 /*
  56  * breakup of minor device number:
  57  * lowest 5 bits:       port number on card             0x1f
  58  * next 2 bits:         card number                     0x60
  59  * top bit:             callout                         0x80
  60  * next 8 bits is the major number
  61  * next 2 bits select initial/lock states
  62  * next 1 bit selects the master control device
  63  */
  64
  65 #define SI_PORT_MASK            0x1f
  66 #define SI_CARD_MASK            0x60
  67 #define SI_TTY_MASK             0x7f
  68 #define SI_CALLOUT_MASK         0x80
  69 #define SI_INIT_STATE_MASK      0x10000
  70 #define SI_LOCK_STATE_MASK      0x20000
  71 #define SI_STATE_MASK           0x30000
  72 #define SI_CONTROLDEV_MASK      0x40000
  73 #define SI_SPECIAL_MASK         0x70000
  74
  75 #define SI_CARDSHIFT            5
  76 #define SI_PORT(m)              (m & SI_PORT_MASK)
  77 #define SI_CARD(m)              ((m & SI_CARD_MASK) >> SI_CARDSHIFT)
  78 #define SI_TTY(m)               (m & SI_TTY_MASK)
  79
  80 #define IS_CALLOUT(m)           (m & SI_CALLOUT_MASK)
  81 #define IS_STATE(m)             (m & SI_STATE_MASK)
  82 #define IS_CONTROLDEV(m)        (m & SI_CONTROLDEV_MASK)
  83 #define IS_SPECIAL(m)           (m & SI_SPECIAL_MASK)
  84
  85 #define MINOR2SC(m)     ((struct si_softc *)devclass_get_softc(si_devclass, SI_CARD(m)))
  86 #define MINOR2PP(m)     (MINOR2SC((m))->sc_ports + SI_PORT((m)))
  87 #define MINOR2TP(m)     (MINOR2PP((m))->sp_tty)
  88 #define TP2PP(tp)       (MINOR2PP(SI_TTY(minor((tp)->t_dev))))
  89
  90 /* Buffer parameters */
  91 #define SI_BUFFERSIZE   256
  92
  93 typedef unsigned char   BYTE;           /* Type cast for unsigned 8 bit */
  94 typedef unsigned short  WORD;           /* Type cast for unsigned 16 bit */
  95
  96
  97 /*
  98  * Hardware `registers', stored in the shared memory.
  99  * These are related to the firmware running on the Z280.
 100  */
 101
 102 struct si_reg   {
 103         BYTE    initstat;
 104         BYTE    memsize;
 105         WORD    int_count;
 106         WORD    revision;
 107         BYTE    rx_int_count;           /* isr_count on Jet */
 108         BYTE    main_count;             /* spare on Z-280 */
 109         WORD    int_pending;
 110         WORD    int_counter;
 111         BYTE    int_scounter;
 112         BYTE    res[0x80 - 13];
 113 };
 114
 115 /*
 116  *      Per module control structure, stored in shared memory.
 117  */
 118 struct si_module {
 119         WORD    sm_next;                /* Next module */
 120         BYTE    sm_type;                /* Number of channels */
 121         BYTE    sm_number;              /* Module number on cable */
 122         BYTE    sm_dsr;                 /* Private dsr copy */
 123         BYTE    sm_res[0x80 - 5];       /* Reserve space to 128 bytes */
 124 };
 125
 126 /*
 127  *      The 'next' pointer & with 0x7fff + SI base addres give
 128  *      the address of the next module block if fitted. (else 0)
 129  *      Note that next points to the TX buffer so 0x60 must be
 130  *      subtracted to find the true base.
 131  */
 132 #define TA4             0x00
 133 #define TA8             0x08
 134 #define TA4_ASIC        0x0A
 135 #define TA8_ASIC        0x0B
 136 #define MTA             0x28
 137 #define SXDC            0x48
 138
 139 /*
 140  *      Per channel(port) control structure, stored in shared memory.
 141  */
 142 struct  si_channel {
 143         /*
 144          * Generic stuff
 145          */
 146         WORD    next;                   /* Next Channel */
 147         WORD    addr_uart;              /* Uart address */
 148         WORD    module;                 /* address of module struct */
 149         BYTE    type;                   /* Uart type */
 150         BYTE    fill;
 151         /*
 152          * Uart type specific stuff
 153          */
 154         BYTE    x_status;               /* XON / XOFF status */
 155         BYTE    c_status;               /* cooking status */
 156         BYTE    hi_rxipos;              /* stuff into rx buff */
 157         BYTE    hi_rxopos;              /* stuff out of rx buffer */
 158         BYTE    hi_txopos;              /* Stuff into tx ptr */
 159         BYTE    hi_txipos;              /* ditto out */
 160         BYTE    hi_stat;                /* Command register */
 161         BYTE    dsr_bit;                /* Magic bit for DSR */
 162         BYTE    txon;                   /* TX XON char */
 163         BYTE    txoff;                  /* ditto XOFF */
 164         BYTE    rxon;                   /* RX XON char */
 165         BYTE    rxoff;                  /* ditto XOFF */
 166         BYTE    hi_mr1;                 /* mode 1 image */
 167         BYTE    hi_mr2;                 /* mode 2 image */
 168         BYTE    hi_csr;                 /* clock register */
 169         BYTE    hi_op;                  /* Op control */
 170         BYTE    hi_ip;                  /* Input pins */
 171         BYTE    hi_state;               /* status */
 172         BYTE    hi_prtcl;               /* Protocol */
 173         BYTE    hi_txon;                /* host copy tx xon stuff */
 174         BYTE    hi_txoff;
 175         BYTE    hi_rxon;
 176         BYTE    hi_rxoff;
 177         BYTE    close_prev;             /* Was channel previously closed */
 178         BYTE    hi_break;               /* host copy break process */
 179         BYTE    break_state;            /* local copy ditto */
 180         BYTE    hi_mask;                /* Mask for CS7 etc. */
 181         BYTE    mask_z280;              /* Z280's copy */
 182         BYTE    res[0x60 - 36];
 183         BYTE    hi_txbuf[SI_BUFFERSIZE];
 184         BYTE    hi_rxbuf[SI_BUFFERSIZE];
 185         BYTE    res1[0xA0];
 186 };
 187
 188 /*
 189  *      Register definitions
 190  */
 191
 192 /*
 193  *      Break input control register definitions
 194  */
 195 #define BR_IGN          0x01    /* Ignore any received breaks */
 196 #define BR_INT          0x02    /* Interrupt on received break */
 197 #define BR_PARMRK       0x04    /* Enable parmrk parity error processing */
 198 #define BR_PARIGN       0x08    /* Ignore chars with parity errors */
 199
 200 /*
 201  *      Protocol register provided by host for XON/XOFF and cooking
 202  */
 203 #define SP_TANY         0x01    /* Tx XON any char */
 204 #define SP_TXEN         0x02    /* Tx XON/XOFF enabled */
 205 #define SP_CEN          0x04    /* Cooking enabled */
 206 #define SP_RXEN         0x08    /* Rx XON/XOFF enabled */
 207 #define SP_DCEN         0x20    /* DCD / DTR check */
 208 #define SP_PAEN         0x80    /* Parity checking enabled */
 209
 210 /*
 211  *      HOST STATUS / COMMAND REGISTER
 212  */
 213 #define IDLE_OPEN       0x00    /* Default mode, TX and RX polled
 214                                    buffer updated etc */
 215 #define LOPEN           0x02    /* Local open command (no modem ctl */
 216 #define MOPEN           0x04    /* Open and monitor modem lines (blocks
 217                                    for DCD */
 218 #define MPEND           0x06    /* Wating for DCD */
 219 #define CONFIG          0x08    /* Channel config has changed */
 220 #define CLOSE           0x0A    /* Close channel */
 221 #define SBREAK          0x0C    /* Start break */
 222 #define EBREAK          0x0E    /* End break */
 223 #define IDLE_CLOSE      0x10    /* Closed channel */
 224 #define IDLE_BREAK      0x12    /* In a break */
 225 #define FCLOSE          0x14    /* Force a close */
 226 #define RESUME          0x16    /* Clear a pending xoff */
 227 #define WFLUSH          0x18    /* Flush output buffer */
 228 #define RFLUSH          0x1A    /* Flush input buffer */
 229
 230 /*
 231  *      Host status register
 232  */
 233 #define ST_BREAK        0x01    /* Break received (clear with config) */
 234
 235 /*
 236  *      OUTPUT PORT REGISTER
 237  */
 238 #define OP_CTS  0x01    /* Enable CTS */
 239 #define OP_DSR  0x02    /* Enable DSR */
 240 /*
 241  *      INPUT PORT REGISTER
 242  */
 243 #define IP_DCD  0x04    /* DCD High */
 244 #define IP_DTR  0x20    /* DTR High */
 245 #define IP_RTS  0x02    /* RTS High */
 246 #define IP_RI   0x40    /* RI  High */
 247
 248 /*
 249  *      Mode register and uart specific stuff
 250  */
 251 /*
 252  *      MODE REGISTER 1
 253  */
 254 #define MR1_5_BITS      0x00
 255 #define MR1_6_BITS      0x01
 256 #define MR1_7_BITS      0x02
 257 #define MR1_8_BITS      0x03
 258 /*
 259  *      Parity
 260  */
 261 #define MR1_ODD         0x04
 262 #define MR1_EVEN        0x00
 263 /*
 264  *      Parity mode
 265  */
 266 #define MR1_WITH        0x00
 267 #define MR1_FORCE       0x08
 268 #define MR1_NONE        0x10
 269 #define MR1_SPECIAL     0x18
 270 /*
 271  *      Error mode
 272  */
 273 #define MR1_CHAR        0x00
 274 #define MR1_BLOCK       0x20
 275 /*
 276  *      Request to send line automatic control
 277  */
 278 #define MR1_CTSCONT     0x80
 279
 280 /*
 281  *      MODE REGISTER 2
 282  */
 283 /*
 284  *      Number of stop bits
 285  */
 286 #define MR2_1_STOP      0x07
 287 #define MR2_2_STOP      0x0F
 288 /*
 289  *      Clear to send automatic testing before character sent
 290  */
 291 #define MR2_RTSCONT     0x10
 292 /*
 293  *      Reset RTS automatically after sending character?
 294  */
 295 #define MR2_CTSCONT     0x20
 296 /*
 297  *      Channel mode
 298  */
 299 #define MR2_NORMAL      0x00
 300 #define MR2_AUTO        0x40
 301 #define MR2_LOCAL       0x80
 302 #define MR2_REMOTE      0xC0
 303
 304 /*
 305  *      CLOCK SELECT REGISTER - this and the code assumes ispeed == ospeed
 306  */
 307 /*
 308  * Clocking rates are in lower and upper nibbles.. R = upper, T = lower
 309  */
 310 #define CLK75           0x0
 311 #define CLK110          0x1     /* 110 on XIO!! */
 312 #define CLK38400        0x2     /* out of sequence */
 313 #define CLK150          0x3
 314 #define CLK300          0x4
 315 #define CLK600          0x5
 316 #define CLK1200         0x6
 317 #define CLK2000         0x7
 318 #define CLK2400         0x8
 319 #define CLK4800         0x9
 320 #define CLK7200         0xa     /* unchecked */
 321 #define CLK9600         0xb
 322 #define CLK19200        0xc
 323 #define CLK57600        0xd
 324
 325 /*
 326  * Per-port (channel) soft information structure, stored in the driver.
 327  * This is visible via ioctl()'s.
 328  */
 329 struct si_port {
 330         volatile struct si_channel *sp_ccb;
 331         struct tty      *sp_tty;
 332         int             sp_pend;        /* pending command */
 333         int             sp_last_hi_ip;  /* cached DCD */
 334         int             sp_state;
 335         int             sp_active_out;  /* callout is open */
 336         int             sp_dtr_wait;    /* DTR holddown in hz */
 337         int             sp_delta_overflows;
 338         u_int           sp_wopeners;    /* # procs waiting DCD */
 339         u_char          sp_hotchar;     /* ldisc specific ASAP char */
 340         /* Initial state. */
 341         struct termios  sp_iin;
 342         struct termios  sp_iout;
 343         /* Lock state. */
 344         struct termios  sp_lin;
 345         struct termios  sp_lout;
 346         struct callout  lstart_ch;      /* For canceling our timeout */
 347         struct callout  dtr_ch;         /* DTR wakeup */
 348 #ifdef  SI_DEBUG
 349         int             sp_debug;       /* debug mask */
 350 #endif
 351 };
 352
 353 /* sp_state */
 354 #define SS_CLOSED       0x0000
 355 #define SS_OPEN         0x0001  /* Port is active                       */
 356 /*                      0x0002  --                                      */
 357 /*                      0x0004  --                                      */
 358 /*                      0x0008  --                                      */
 359 /*                      0x0010  --                                      */
 360 /*                      0x0020  --                                      */
 361 /*                      0x0040  --                                      */
 362 /*                      0x0080  --                                      */
 363 #define SS_LSTART       0x0100  /* lstart timeout pending               */
 364 #define SS_INLSTART     0x0200  /* running an lstart induced t_oproc    */
 365 #define SS_CLOSING      0x0400  /* in the middle of a siclose()         */
 366 /*                      0x0800  --                                      */
 367 #define SS_WAITWRITE    0x1000
 368 #define SS_BLOCKWRITE   0x2000
 369 #define SS_DTR_OFF      0x4000  /* DTR held off                         */
 370
 371 /*
 372  *      Command post flags
 373  */
 374 #define SI_NOWAIT       0x00    /* Don't wait for command */
 375 #define SI_WAIT         0x01    /* Wait for complete */
 376
 377 /*
 378  * Extensive debugging stuff - manipulated using siconfig(8)
 379  */
 380 #define DBG_ENTRY               0x00000001
 381 #define DBG_DRAIN               0x00000002
 382 #define DBG_OPEN                0x00000004
 383 #define DBG_CLOSE               0x00000008
 384 #define DBG_READ                0x00000010
 385 #define DBG_WRITE               0x00000020
 386 #define DBG_PARAM               0x00000040
 387 #define DBG_INTR                0x00000080
 388 #define DBG_IOCTL               0x00000100
 389 /*                              0x00000200 */
 390 #define DBG_SELECT              0x00000400
 391 #define DBG_OPTIM               0x00000800
 392 #define DBG_START               0x00001000
 393 #define DBG_EXIT                0x00002000
 394 #define DBG_FAIL                0x00004000
 395 #define DBG_STOP                0x00008000
 396 #define DBG_AUTOBOOT            0x00010000
 397 #define DBG_MODEM               0x00020000
 398 #define DBG_DOWNLOAD            0x00040000
 399 #define DBG_LSTART              0x00080000
 400 #define DBG_POLL                0x00100000
 401 #define DBG_ALL                 0xffffffff
 402
 403 /*
 404  *      SI ioctls
 405  */
 406 /*
 407  * struct for use by Specialix ioctls - used by siconfig(8)
 408  */
 409 typedef struct {
 410         unsigned char
 411                 sid_port:5,                     /* 0 - 31 ports per card */
 412                 sid_card:2,                     /* 0 - 3 cards */
 413                 sid_control:1;                  /* controlling device (all cards) */
 414 } sidev_t;
 415 struct si_tcsi {
 416         sidev_t tc_dev;
 417         union {
 418                 int     x_int;
 419                 int     x_dbglvl;
 420         }       tc_action;
 421 #define tc_card         tc_dev.sid_card
 422 #define tc_port         tc_dev.sid_port
 423 #define tc_int          tc_action.x_int
 424 #define tc_dbglvl       tc_action.x_dbglvl
 425 };
 426
 427 struct si_pstat {
 428         sidev_t tc_dev;
 429         union {
 430                 struct si_port    x_siport;
 431                 struct si_channel x_ccb;
 432                 struct tty        x_tty;
 433         } tc_action;
 434 #define tc_siport       tc_action.x_siport
 435 #define tc_ccb          tc_action.x_ccb
 436 #define tc_tty          tc_action.x_tty
 437 };
 438
 439 #define IOCTL_MIN       96
 440 #define TCSIDEBUG       _IOW('S', 96, struct si_tcsi)   /* Toggle debug */
 441 #define TCSIRXIT        _IOW('S', 97, struct si_tcsi)   /* RX int throttle */
 442 #define TCSIIT          _IOW('S', 98, struct si_tcsi)   /* TX int throttle */
 443                         /* 99 defunct */
 444                         /* 100 defunct */
 445                         /* 101 defunct */
 446                         /* 102 defunct */
 447                         /* 103 defunct */
 448                         /* 104 defunct */
 449 #define TCSISTATE       _IOWR('S', 105, struct si_tcsi) /* get current state of RTS
 450                                                    DCD and DTR pins */
 451                         /* 106 defunct */
 452 #define TCSIPORTS       _IOR('S', 107, int)     /* Number of ports found */
 453 #define TCSISDBG_LEVEL  _IOW('S', 108, struct si_tcsi)  /* equivalent of TCSIDEBUG which sets a
 454                                          * particular debug level (DBG_??? bit
 455                                          * mask), default is 0xffff */
 456 #define TCSIGDBG_LEVEL  _IOWR('S', 109, struct si_tcsi)
 457 #define TCSIGRXIT       _IOWR('S', 110, struct si_tcsi)
 458 #define TCSIGIT         _IOWR('S', 111, struct si_tcsi)
 459                         /* 112 defunct */
 460                         /* 113 defunct */
 461                         /* 114 defunct */
 462                         /* 115 defunct */
 463                         /* 116 defunct */
 464                         /* 117 defunct */
 465
 466 #define TCSISDBG_ALL    _IOW('S', 118, int)             /* set global debug level */
 467 #define TCSIGDBG_ALL    _IOR('S', 119, int)             /* get global debug level */
 468
 469                         /* 120 defunct */
 470                         /* 121 defunct */
 471                         /* 122 defunct */
 472                         /* 123 defunct */
 473 #define TCSIMODULES     _IOR('S', 124, int)     /* Number of modules found */
 474
 475 /* Various stats and monitoring hooks per tty device */
 476 #define TCSI_PORT       _IOWR('S', 125, struct si_pstat) /* get si_port */
 477 #define TCSI_CCB        _IOWR('S', 126, struct si_pstat) /* get si_ccb */
 478 #define TCSI_TTY        _IOWR('S', 127, struct si_pstat) /* get tty struct */
 479
 480 #define IOCTL_MAX       127
 481
 482 #define IS_SI_IOCTL(cmd)        ((u_int)((cmd)&0xff00) == ('S'<<8) && \
 483                 (u_int)((cmd)&0xff) >= IOCTL_MIN && \
 484                 (u_int)((cmd)&0xff) <= IOCTL_MAX)
 485
 486 #define CONTROLDEV      "/dev/si_control"