usr/src/sys/vax/if/if_dpreg.h

/*
 * Copyright (c) 1982, 1986, 1988 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. 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.
 *
 *      @(#)if_dpreg.h  7.2 (Berkeley) 8/30/90
 */

/*
 * DPV-11 Registers and bits.
 */
struct dpdevice {
        short   dprcsr;         /* Receive Control and Status Register */
        union   {
                short   u_rdsr; /* Receive Data and Status Reg, rd only */
                short   u_sar;  /* Parameter Control Sync/Address Reg, wr only*/
        }       dpun;
        short   dpclr;          /* Parameter Control/Character Length Reg */
        short   dptdsr;         /* Transmit Data and Status Register */
};

#define dprdsr  dpun.u_rdsr
#define dpsar   dpun.u_sar


/* bits in dprcsr */
#define DP_RL   0x0001          /* Remote Loopback Mode */
#define DP_DTR  0x0002          /* Data Terminal Ready (modem) */
#define DP_RTS  0x0004          /* Request to Send (modem) */
#define DP_LL   0x0008          /* Local Loopback */
#define DP_RE   0x0010          /* Enable Receiver */
#define DP_MIE  0x0020          /* Modem (Change) Interrupt Enable */
#define DP_RIE  0x0040          /* Receiver Interrupt Enable */
#define DP_RDR  0x0080          /* Receiver Data Ready */
#define DP_SFD  0x0100          /* Sync or Flag Detected */
#define DP_DSR  0x0200          /* Data Set Ready (modem) */
#define DP_RSR  0x0400          /* Receiver Status Ready (attention) */
#define DP_RA   0x0800          /* Receiver Active (receiving data) */
#define DP_RR   0x1000          /* Receiver Ready (modem) */
#define DP_CTS  0x2000          /* Clear to Send (modem) */
#define DP_IC   0x4000          /* Incoming Call */
#define DP_MSC  0x8000          /* Modem Status Change (CTS, RR, IC, DM) */

/* flags for modem-control */
#define DP_ON   DP_DTR
#define DP_OFF  0

/* bits in dprdsr */
#define DP_RBUF 0x00ff          /* Received Data */
#define DP_RSM  0x0100          /* Receiver Start of Message */
#define DP_REM  0x0200          /* Receiver End of Message */
#define DP_RGA  0x0400          /* Receiver Go-Ahead or Abort */
#define DP_ROVR 0x0800          /* Receiver Receiver Over-Run */
#define DP_RABC 0x7000          /* Reciever Assembled Bit Count */
#define DP_REC  0x8000          /* Reciever Error Check */

/* bits in dpsar */
#define DP_SYNC 0x00ff          /* Sync Char or Station Address */
#define DP_EM   0x0700          /* Error Detection Mode */
#define DP_IDLE 0x0800          /* Idle Mode Select */
#define DP_SAM  0x1000          /* Secondary Address Mode */
#define DP_SSLM 0x2000          /* Strip Synch/Loop Mode */
#define DP_CHRM 0x4000          /* Character/Bit Mode */
#define DP_APA  0x8000          /* Recognize All Parties Addressed */

/* bits in dpclr */
#define DP_CLR  0x0001          /* Reset DP */
#define DP_XA   0x0002          /* Transmiter Active (transmitting data) */
#define DP_XBE  0x0004          /* Transmit Buffer Available */
#define DP_ILB  0x0008          /* Internal Loopback (Maintenance Mode) */
#define DP_XE   0x0010          /* Transmit Enable */
#define DP_SQTM 0x0020          /* Signal Quality/Test Mode */
#define DP_XIE  0x0040          /* Transmit Interrupt Enable */
#define DP_MBZ1 0x0080          /* Reserved (must be zero) */
#define DP_RCL  0x0700          /* Receive Character Length */
#define DP_RL8  0x0000          /* RCL = 8 bits */
#define DP_RL7  0x0700          /* RCL = 7 bits */
#define DP_RL6  0x0600          /* RCL = 6 bits */
#define DP_ECF  0x0800          /* Extended Control Field Option */
#define DP_EAF  0x1000          /* Extended Address Field Option */
#define DP_XCL  0xE000          /* Transmit Character Length */
#define DP_XL8  0x0000          /* XCL = 8 bits */
#define DP_XL7  0xE000          /* XCL = 7 bits */
#define DP_XL6  0xC000          /* XCL = 6 bits */


/* bits in dptdsr */
#define DP_XBUF 0x00FF          /* data to be transmitted */
#define DP_XSM  0x0100          /* Transmit Start of Message */
#define DP_XEM  0x0200          /* Transmit End of Message */
#define DP_XABO 0x0400          /* Tranmsit Abort */
#define DP_XGA  0x0800          /* Tranmsit Go - Ahead */
#define DP_MBZ2 0x7000          /* Reserved (must be zero) */
#define DP_XERR 0x8000          /* Data Late -- XBUF not serviced in time */

#define DP_MTU  2048            /* Very Big X.25 data, normally 128 */