sx.h

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    1 /*
    2  * Device driver for Specialix I/O8+ multiport serial card.
    3  *
    4  * Copyright 2003 Frank Mayhar <frank@exit.com>
    5  *
    6  * Derived from the "si" driver by Peter Wemm <peter@netplex.com.au>, using
    7  * lots of information from the Linux "specialix" driver by Roger Wolff
    8  * <R.E.Wolff@BitWizard.nl> and from the Intel CD1865 "Intelligent Eight-
    9  * Channel Communications Controller" datasheet.  Roger was also nice
   10  * enough to answer numerous questions about stuff specific to the I/O8+
   11  * not covered by the CD1865 datasheet.
   12  *
   13  * Redistribution and use in source and binary forms, with or without
   14  * modification, are permitted provided that the following conditions
   15  * are met:
   16  * 1. Redistributions of source code must retain the above copyright
   17  *    notices, this list of conditions and the following disclaimer.
   18  * 2. Redistributions in binary form must reproduce the above copyright
   19  *    notices, this list of conditions and the following disclaimer in the
   20  *    documentation and/or other materials provided with the distribution.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
   23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
   25  * NO EVENT SHALL THE AUTHORS BE LIABLE.
   26  *
   27  * $FreeBSD: releng/5.3/sys/dev/sx/sx.h 131981 2004-07-11 15:18:39Z phk $
   28  */
   29 
   30 
   31 /*
   32  * Per-channel soft information structure, stored in the driver.  It's called
   33  * "sx_port" just because the si driver calls it "si_port."
   34  *
   35  * This information is mostly visible via ioctl().
   36  */
   37 struct sx_port {
   38         int             sp_chan;        /* Channel number, for convenience.   */
   39         struct tty      *sp_tty;
   40         int             sp_state;
   41         int             sp_active_out;  /* callout is open */
   42         int             sp_delta_overflows;
   43         u_int           sp_wopeners;    /* Processes waiting for DCD.         */
   44         struct termios  sp_iin;         /* Initial state.                     */
   45         struct termios  sp_iout;
   46         struct termios  sp_lin;         /* Lock state.                        */
   47         struct termios  sp_lout;
   48 #ifdef  SX_DEBUG
   49         int             sp_debug;       /* debug mask */
   50 #endif
   51 };
   52 
   53 /*
   54  * Various important values.
   55  */
   56 #define SX_NUMCHANS     8       /* Eight channels on an I/O8+.                */
   57 #define SX_PCI_IO_SPACE 8       /* How much address space to use.             */
   58 #define SX_CCR_TIMEOUT  10000   /* Channel Command Register timeout, 10ms.    */
   59 #define SX_GSVR_TIMEOUT 1000    /* GSVR reset timeout, 1ms.                   */
   60 #define SX_CD1865_ID    0x10    /* ID of the I/O8+ CD1865 chip.               */
   61 #define SX_EI           0x80    /* "Enable interrupt" flag for I/O8+ commands.*/
   62 
   63 #define SX_DATA_REG     0       /* Data register.                             */
   64 #define SX_ADDR_REG     1       /* Address register.                          */
   65 
   66 /*
   67  * The I/O8+ has a 25MHz oscillator on board, but the CD1865 runs at half
   68  * that.
   69  */
   70 #define SX_CD1865_CLOCK 12500000        /* CD1865 clock on I/O8+.             */
   71 #define SX_CD1865_TICK 4000             /* Timer tick rate, via prescaler.    */
   72 #define SX_CD1865_PRESCALE (SX_CD1865_CLOCK/SX_CD1865_TICK) /* Prescale value.*/
   73 
   74 #include <sys/callout.h>
   75 
   76 /*
   77  * Device numbering for the sx device.
   78  *
   79  * The minor number is broken up into four fields as follows:
   80  *      Field                   Bits    Mask
   81  *      ---------------------   ----    ----
   82  *      Channel (port) number   0-2     0x07
   83  *      "DTR pin is DTR" flag   3       0x08
   84  *      Unused (zero)           4       0x10
   85  *      Card number             5-6     0x60
   86  *      Callout device flag     7       0x80
   87  *
   88  * The next 8 bits in the word is the major number, followed by the
   89  * "initial state device" flag and then the "lock state device" flag.
   90  */
   91 #define SX_CHAN_MASK            0x07
   92 #define SX_DTRPIN_MASK          0x08
   93 #define SX_CARD_MASK            0x60
   94 #define SX_TTY_MASK             0x7f
   95 #define SX_CALLOUT_MASK         0x80
   96 #define SX_INIT_STATE_MASK      0x10000
   97 #define SX_LOCK_STATE_MASK      0x20000
   98 #define SX_STATE_MASK           0x30000
   99 #define SX_SPECIAL_MASK         0x30000
  100 
  101 #define SX_CARDSHIFT            5
  102 #define SX_MINOR2CHAN(m)        (m & SX_CHAN_MASK)
  103 #define SX_MINOR2CARD(m)        ((m & SX_CARD_MASK) >> SX_CARDSHIFT)
  104 #define SX_MINOR2TTY(m)         (m & SX_TTY_MASK)
  105 
  106 #define DEV_IS_CALLOUT(m)       (m & SX_CALLOUT_MASK)
  107 #define DEV_IS_STATE(m)         (m & SX_STATE_MASK)
  108 #define DEV_IS_SPECIAL(m)       (m & SX_SPECIAL_MASK)
  109 #define DEV_DTRPIN(m)           (m & SX_DTRPIN_MASK)
  110 
  111 #define MINOR2SC(m)     ((struct sx_softc *)devclass_get_softc(sx_devclass,\
  112                                                               SX_MINOR2CARD(m)))
  113 #define MINOR2PP(m)     (MINOR2SC((m))->sc_ports + SX_MINOR2CHAN((m)))
  114 #define MINOR2TP(m)     (MINOR2PP((m))->sp_tty)
  115 #define TP2PP(tp)       (MINOR2PP(SX_MINOR2TTY(minor((tp)->t_dev))))
  116 #define TP2SC(tp)       (MINOR2SC(minor((tp)->t_dev)))
  117 #define PP2SC(pp)       (MINOR2SC(minor((pp)->sp_tty->t_dev)))
  118 
  119 /* Buffer parameters */
  120 #define SX_BUFFERSIZE   CD1865_RFIFOSZ  /* Just the size of the receive FIFO. */
  121 #define SX_I_HIGH_WATER (TTYHOG - 2 * SX_BUFFERSIZE)
  122 
  123 /*
  124  * Precomputed bitrate clock divisors.  Formula is
  125  *
  126  *                Clock rate (Hz)        12500000
  127  *      divisor = ---------------  or  ------------
  128  *                 16 * bit rate       16 * bitrate
  129  *
  130  * All values are rounded to the nearest integer.
  131  */
  132 #define CLK75           0x28b1          /* 10416.666667                       */
  133 #define CLK110          0x1bbe          /*  7102.272727                       */
  134 #define CLK150          0x1458          /*  5208.333333                       */
  135 #define CLK300          0x0a2c          /*  2604.166667                       */
  136 #define CLK600          0x0516          /*  1302.083333                       */
  137 #define CLK1200         0x028b          /*   651.0416667                      */
  138 #define CLK2000         0x0187          /*   390.625                          */
  139 #define CLK2400         0x0146          /*   325.5208333                      */
  140 #define CLK4800         0x00a3          /*   162.7604167                      */
  141 #define CLK7200         0x006d          /*   108.5069444                      */
  142 #define CLK9600         0x0051          /*    81.38020833                     */
  143 #define CLK19200        0x0029          /*    40.69010417                     */
  144 #define CLK38400        0x0014          /*    20.34505208                     */
  145 #define CLK57600        0x000e          /*    13.56336806                     */
  146 #define CLK115200       0x0007          /*     6.781684028                    */
  147 
  148 
  149 /* sp_state */
  150 #define SX_SS_CLOSED    0x00000         /* Port is closed.                    */
  151 #define SX_SS_OPEN      0x00001         /* Port is open and active.           */
  152 #define SX_SS_XMIT      0x00002         /* We're transmitting data.           */
  153 #define SX_SS_INTR      0x00004         /* We're processing an interrupt.     */
  154 #define SX_SS_CLOSING   0x00008         /* in the middle of an sxclose()      */
  155 #define SX_SS_WAITWRITE 0x00010
  156 #define SX_SS_BLOCKWRITE 0x00020
  157 #define SX_SS_DTR_OFF   0x00040         /* DTR held off                       */
  158 #define SX_SS_IFLOW     0x00080         /* Input (RTS) flow control on.       */
  159 #define SX_SS_OFLOW     0x00100         /* Output (CTS) flow control on.      */
  160 #define SX_SS_IRCV      0x00200         /* In a receive interrupt.            */
  161 #define SX_SS_IMODEM    0x00400         /* In a modem-signal interrupt.       */
  162 #define SX_SS_IRCVEXC   0x00800         /* In a receive-exception interrupt.  */
  163 #define SX_SS_IXMIT     0x01000         /* In a transmit interrupt.           */
  164 #define SX_SS_OSTOP     0x02000         /* Stopped by output flow control.    */
  165 #define SX_SS_ISTOP     0x04000         /* Stopped by input flow control.     */
  166 #define SX_SS_DTRPIN    0x08000         /* DTR/RTS pin is DTR.                */
  167 #define SX_SS_DOBRK     0x10000         /* Change break status.               */
  168 #define SX_SS_BREAK     0x20000         /* Doing break.                       */
  169 
  170 #define SX_DTRPIN(pp)   ((pp)->sp_state & SX_SS_DTRPIN) /* DTR/RTS pin is DTR.*/
  171 #define SX_XMITTING(pp) ((pp)->sp_state & SX_SS_XMIT) /* We're transmitting.  */
  172 #define SX_INTR(pp)     ((pp)->sp_state & SX_SS_INTR) /* In an interrupt.     */
  173 #define SX_IXMIT(pp)    ((pp)->sp_state & SX_SS_IXMIT) /* Transmit interrupt. */
  174 #define SX_IFLOW(pp)    ((pp)->sp_state & SX_SS_IFLOW) /* Input flow control. */
  175 #define SX_OFLOW(pp)    ((pp)->sp_state & SX_SS_OFLOW) /* Output flow control.*/
  176 #define SX_IRCV(pp)     ((pp)->sp_state & SX_SS_IRCV) /* Receive interrupt.   */
  177 #define SX_IMODEM(pp)   ((pp)->sp_state & SX_SS_IMODEM) /* Modem state change.*/
  178 #define SX_IRCVEXC(pp)  ((pp)->sp_state & SX_SS_IRCVEXC) /* Rcv exception.    */
  179 #define SX_OSTOP(pp)    ((pp)->sp_state & SX_SS_OSTOP) /* Output stopped.     */
  180 #define SX_ISTOP(pp)    ((pp)->sp_state & SX_SS_ISTOP) /* Input stopped.      */
  181 #define SX_DOBRK(pp)    ((pp)->sp_state & SX_SS_DOBRK) /* Change break status.*/
  182 #define SX_BREAK(pp)    ((pp)->sp_state & SX_SS_BREAK) /* Doing break.        */
  183 
  184 #define DBG_ENTRY               0x00000001
  185 #define DBG_DRAIN               0x00000002
  186 #define DBG_OPEN                0x00000004
  187 #define DBG_CLOSE               0x00000008
  188 /*                              0x00000010*/
  189 #define DBG_WRITE               0x00000020
  190 #define DBG_PARAM               0x00000040
  191 #define DBG_INTR                0x00000080
  192 #define DBG_IOCTL               0x00000100
  193 /*                              0x00000200 */
  194 /*                              0x00000400*/
  195 #define DBG_OPTIM               0x00000800
  196 #define DBG_START               0x00001000
  197 #define DBG_EXIT                0x00002000
  198 #define DBG_FAIL                0x00004000
  199 #define DBG_STOP                0x00008000
  200 #define DBG_AUTOBOOT            0x00010000
  201 #define DBG_MODEM               0x00020000
  202 #define DBG_MODEM_STATE         0x00040000
  203 #define DBG_RECEIVE             0x00080000
  204 #define DBG_POLL                0x00100000
  205 #define DBG_TRANSMIT            0x00200000
  206 #define DBG_RECEIVE_EXC         0x00400000
  207 #define DBG_PRINTF              0x80000000
  208 #define DBG_ALL                 0xffffffff
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FreeBSD/Linux Kernel Cross Reference sys/dev/sx/sx.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/sx/sx.h
