/*      $NetBSD: mscreg.h,v 1.9 2007/02/22 05:04:12 thorpej Exp $ */

/*
* Copyright (c) 1982, 1986, 1990 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*    - created by zik 931207
*    - Fixed break value. 950108 RFH
*    - Added 6502 field to mscmemory so board can be halted while
*      it's memory is being reloaded. 950108 RFH
*    - Ripped out structure guts and replaced with Jukka Marin's stuff for his
*      freely redistributable version of the 2232 6502c code. Yea!!!!!!
*      950916 RFH
*    - Added Jukka's turbo board detection support and tmpbuf for copys. 950918
*    - Change to NetBSD style for integration in to the main tree. 950919
*/

/*
* Copyright (c) 1993 Zik.
* Copyright (c) 1995 Jukka Marin <[email protected]>.
* Copyright (c) 1995 Rob Healey <[email protected]>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*    - created by zik 931207
*    - Fixed break value. 950108 RFH
*    - Added 6502 field to mscmemory so board can be halted while
*      it's memory is being reloaded. 950108 RFH
*    - Ripped out structure guts and replaced with Jukka Marin's stuff for his
*      freely redistributable version of the 2232 6502c code. Yea!!!!!!
*      950916 RFH
*    - Added Jukka's turbo board detection support and tmpbuf for copys. 950918
*    - Change to NetBSD style for integration in to the main tree. 950919
*/

#define NUMLINES        7       /* number of lines per card */
#define IOBUFLEN        256     /* number of bytes per buffer */
#define IOBUFLENMASK    0xff    /* mask for maximum number of bytes */
#define IOBUFHIGHWATER  192     /* point at which to enable output */
#define IOBUFLOWWATER   128     /* point at which to wake output */

#define MSC_VBL_PRIORITY        1       /* priority of vbl interrupt handler */

#define MSC_UNKNOWN     0       /* crystal not known */
#define MSC_NORMAL      1       /* normal A2232 (1.8432 MHz oscillator) */
#define MSC_TURBO       2       /* turbo A2232 (3.6864 MHz oscillator) */


struct msccommon {
       char   Crystal; /* normal (1) or turbo (2) board? */
       u_char Pad_a;
       u_char TimerH;  /* timer value after speed check */
       u_char TimerL;
       u_char CDHead;  /* head pointer for CD message queue */
       u_char CDTail;  /* tail pointer for CD message queue */
       u_char CDStatus;
       u_char Pad_b;
};

struct mscstatus {
       u_char InHead;          /* input queue head */
       u_char InTail;          /* input queue tail */
       u_char OutDisable;      /* disables output */
       u_char OutHead;         /* output queue head */
       u_char OutTail;         /* output queue tail */
       u_char OutCtrl;         /* soft flow control character to send */
       u_char OutFlush;        /* flushes output buffer */
       u_char Setup;           /* causes reconfiguration */
       u_char Param;           /* parameter byte - see MSCPARAM */
       u_char Command;         /* command byte - see MSCCMD */
       u_char SoftFlow;        /* enables xon/xoff flow control */
       /* private 65C02 fields: */
       u_char XonOff;          /* stores XON/XOFF enable/disable */
};

#define MSC_MEMPAD1     \
   (0x0200 - NUMLINES * sizeof(struct mscstatus) - sizeof(struct msccommon))
#define MSC_MEMPAD2     (0x2000 - NUMLINES * IOBUFLEN - IOBUFLEN)

struct mscmemory {
       struct mscstatus Status[NUMLINES];      /* 0x0000-0x006f status areas */
       struct msccommon Common;                /* 0x0070-0x0077 common flags */
       u_char Dummy1[MSC_MEMPAD1];             /* 0x00XX-0x01ff */
       u_char OutBuf[NUMLINES][IOBUFLEN];      /* 0x0200-0x08ff output bufs */
       u_char InBuf[NUMLINES][IOBUFLEN];       /* 0x0900-0x0fff input bufs */
       u_char InCtl[NUMLINES][IOBUFLEN];       /* 0x1000-0x16ff control data */
       u_char CDBuf[IOBUFLEN];                 /* 0x1700-0x17ff CD event buffer */
       u_char Dummy2[MSC_MEMPAD2];             /* 0x1800-0x2fff */
       u_char Code[0x1000];                    /* 0x3000-0x3fff code area */
       u_short InterruptAck;                   /* 0x4000        intr ack */
       u_char Dummy3[0x3ffe];                  /* 0x4002-0x7fff */
       u_short Enable6502Reset;                /* 0x8000 Stop board, */
                                               /*  6502 RESET line held low */
       u_char Dummy4[0x3ffe];                  /* 0x8002-0xbfff */
       u_short ResetBoard;                     /* 0xc000 reset board & run, */
                                               /*  6502 RESET line held high */
};

#undef MSC_MEMPAD1
#undef MSC_MEMPAD2

struct mscdevice {
       volatile struct mscmemory *board;       /* where the board is located */
       int flags;                      /* modem control flags */
       int openflags;                  /* flags for device open */
       u_char unit;                    /* which unit (ie. which board) */
       u_char port;                    /* which port on the board (0-6) */
       u_char active;                  /* does this port have hardware? */
       u_char closing;                 /* are we flushing before close? */
       char tmpbuf[IOBUFLEN];          /* temp buffer for data transfers */
};

#define MSCINCTL_CHAR   0       /* corresponding byte in InBuf is a character */
#define MSCINCTL_EVENT  1       /* corresponding byte in InBuf is an event */

#define MSCEVENT_Break          1       /* break set */
#define MSCEVENT_CarrierOn      2       /* carrier raised */
#define MSCEVENT_CarrierOff     3       /* carrier dropped */

#define MSCCMD_Enable           0x1     /* enable/DTR bit */
#define MSCCMD_Close            0x2     /* close the device */
#define MSCCMD_Open             0xb     /* open the device */
#define MSCCMD_CMask            0xf     /* command mask */
#define MSCCMD_RTSOff           0x0     /* turn off RTS */
#define MSCCMD_RTSOn            0x8     /* turn on RTS */
#define MSCCMD_Break            0xd     /* transmit a break */
#define MSCCMD_RTSMask          0xc     /* mask for RTS stuff */
#define MSCCMD_NoParity         0x00    /* don't use parity */
#define MSCCMD_OddParity        0x20    /* odd parity */
#define MSCCMD_EvenParity       0x60    /* even parity */
#define MSCCMD_ParityMask       0xe0    /* parity mask */

#define MSCPARAM_B115200        0x0     /* baud rates */
#define MSCPARAM_B50            0x1
#define MSCPARAM_B75            0x2
#define MSCPARAM_B110           0x3
#define MSCPARAM_B134           0x4
#define MSCPARAM_B150           0x5
#define MSCPARAM_B300           0x6
#define MSCPARAM_B600           0x7
#define MSCPARAM_B1200          0x8
#define MSCPARAM_B1800          0x9
#define MSCPARAM_B2400          0xa
#define MSCPARAM_B3600          0xb
#define MSCPARAM_B4800          0xc
#define MSCPARAM_B7200          0xd
#define MSCPARAM_B9600          0xe
#define MSCPARAM_B19200         0xf
#define MSCPARAM_BaudMask       0xf     /* baud rate mask */
#define MSCPARAM_RcvBaud        0x10    /* enable receive baud rate */
#define MSCPARAM_8Bit           0x00    /* numbers of bits */
#define MSCPARAM_7Bit           0x20
#define MSCPARAM_6Bit           0x40
#define MSCPARAM_5Bit           0x60
#define MSCPARAM_BitMask        0x60    /* numbers of bits mask */

/* tty number from device */
#define MSCTTY(dev)     (minor(dev) & 0x7e)

/* slot number from device */
#define MSCSLOT(dev)    ((minor(dev) & 0x7e)>>1)

/* dialin mode from device */
#define MSCDIALIN(dev)  (minor(dev) & 0x01)

/* board number from device */
#define MSCBOARD(dev)   ((minor(dev))>>4)

/* line number from device */
#define MSCLINE(dev)    (((minor(dev)) & 0xe)>>1)

/* number of slots */
#define MSCSLOTS        ((NMSC-1)*8+7)

/* number of ttys */
#define MSCTTYS         (MSCSLOTS*2)

/* board number given slot number */
#define MSCUNIT(slot)   ((slot)>>3)

/* slot number given unit and line */
#define MSCSLOTUL(unit,line)    (((unit)<<3)+(line))

/* tty number given slot */
#define MSCTTYSLOT(slot)        ((slot)<<1)

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