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Annotation of Net2/arch/vax/if/if_dmv.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)if_dmv.h    7.4 (Berkeley) 6/28/90
        !            34:  */
        !            35: 
        !            36: /*
        !            37:  * DMV-11 Driver
        !            38:  *
        !            39:  * Qbus Sync DDCMP interface - DMV operated in full duplex, point to point mode
        !            40:  *
        !            41:  * Written by Bob Kridle of Mt Xinu
        !            42:  * starting from if_dmc.h version 6.4 dated 6/8/85 
        !            43:  */
        !            44: 
        !            45: struct dmvdevice {
        !            46:        union {
        !            47:                u_char    xbsel[2];
        !            48:                u_short xwsel;
        !            49:        } xw0;
        !            50:        union {
        !            51:                u_char    xbsel[2];
        !            52:                u_short xwsel;
        !            53:        } xw1;
        !            54:        union {
        !            55:                u_char    xbsel[2];
        !            56:                u_short xwsel;
        !            57:        } xw2;
        !            58:        union {
        !            59:                u_char    xbsel[2];
        !            60:                u_short xwsel;
        !            61:        } xw3;
        !            62:        union {
        !            63:                u_char    xbsel[2];
        !            64:                u_short xwsel;
        !            65:        } xw4;
        !            66: };
        !            67: 
        !            68: #define  bsel0 xw0.xbsel[0]
        !            69: #define  bsel1 xw0.xbsel[1]
        !            70: #define  bsel2 xw1.xbsel[0]
        !            71: #define  bsel3 xw1.xbsel[1]
        !            72: #define  bsel4 xw2.xbsel[0]
        !            73: #define  bsel5 xw2.xbsel[1]
        !            74: #define  bsel6 xw3.xbsel[0]
        !            75: #define  bsel7 xw3.xbsel[1]
        !            76: #define  bsel10        xw4.xbsel[0]
        !            77: #define  bsel11        xw4.xbsel[1]
        !            78: 
        !            79: #define         wsel0  xw0.xwsel
        !            80: #define         wsel2  xw1.xwsel
        !            81: #define         wsel4  xw2.xwsel
        !            82: #define         wsel6  xw3.xwsel
        !            83: #define         wsel10 xw4.xwsel
        !            84: 
        !            85: /*
        !            86:  * dmv software packet encapsulation.  This allows the dmv
        !            87:  * link to be multiplexed among several protocols.
        !            88:  * The first eight bytes of the dmc header are garbage,
        !            89:  * since on a vax the uba has been known to mung these
        !            90:  * bytes.  The next two bytes encapsulate packet type.
        !            91:  */
        !            92: struct dmv_header {
        !            93:        short   dmv_type;       /* encapsulate packet type */
        !            94: };
        !            95: 
        !            96: /* packet types */
        !            97: #define        DMV_IPTYPE      1
        !            98: #define        DMV_TRAILER     2
        !            99: #define        DMV_NTRAILER    16
        !           100: 
        !           101: /*
        !           102:  * DMVMTU includes space for data (1024) + 
        !           103:  * protocol header (256) + trailer descriptor (4).
        !           104:  * The software link encapsulation header (dmv_header)
        !           105:  * is handled separately.
        !           106:  */
        !           107: #define DMVMTU  1284
        !           108: 
        !           109: #define        RDYSCAN 16      /* loop delay for RDYI after RQI */
        !           110: 
        !           111:        /* defines for bsel0 */
        !           112: 
        !           113: #define        DMV_IEI         0x01            /* interrupt enable, input */
        !           114: #define        DMV_IEO         0x10            /* interrupt enable, output */
        !           115: #define        DMV_RQI         0x80            /* request input */
        !           116: #define DMV0BITS       "\10\8RQI\5IEO\1IEI"
        !           117: 
        !           118:        /* defines for bsel1 */
        !           119: 
        !           120: #define        DMV_MCLR        0x40            /* master clear */
        !           121: #define        DMV_RUN         0x80            /* run */
        !           122: #define DMV1BITS       "\10\8RUN\7MCLR"
        !           123: 
        !           124:        /* defines for bsel2 */
        !           125: 
        !           126: #define        DMV_CMD         0x07            /* command/response type field */
        !           127: 
        !           128: 
        !           129:        /* input commands */
        !           130: 
        !           131: #define        DMV_BACCR       0x00            /* buffer address, char. count - rec */
        !           132: #define        DMV_BACCX       0x04            /* buffer address, char. count - xmit */
        !           133: #define        DMV_MDEFI       0x02            /* mode definition input */
        !           134: #define        DMV_CNTRLI      0x01            /* control input */
        !           135: 
        !           136:        /* response identifiers */
        !           137: 
        !           138: #define        DMV_CNTRLO      0x01            /* control output */
        !           139: #define        DMV_MDEFO       0x02            /* information output */
        !           140: #define        DMV_BDRUS       0x00            /* buffer definition - rec. used */
        !           141: #define        DMV_BDRUNUS     0x03            /* buffer disposition - rec. unused */
        !           142: #define        DMV_BDXSA       0x04            /* buffer dispostiion - sent & ack */
        !           143: #define        DMV_BDXSN       0x06            /* buffer dispostiion - sent & not ack*/
        !           144: #define        DMV_BDXNS       0x07            /* buffer dispostiion - not sent */
        !           145: 
        !           146: #define DMV_22BIT      0x08            /* buffer address in 22 bit format */
        !           147: #define DMV_RDI                0x10            /* ready for input */
        !           148: #define DMV_RDO                0x80            /* ready for output */
        !           149: #define DMV2BITS       "\10\8RDO\5RDI"
        !           150: 
        !           151:        /* defines for CNTRLI mode */
        !           152: 
        !           153: #define        DMV_RDTSS       0x20            /* read tributary status slot */
        !           154: #define        DMV_RDCTSS      0x40            /* read/clear tributary status slot */
        !           155: #define        DMV_WRTSS       0x80            /* write tributary status slot */
        !           156: #define        DMV_TRIBN       0x1f            /* tributary number */
        !           157: #define        DMV_RQKEY       0x1f            /* control command request key */
        !           158: #define DMV_ECBP       0x100           /* establish common buffer pool */
        !           159: 
        !           160:        /* relevant command request keys */
        !           161: 
        !           162: #define DMV_NOP                0x00            /* no-op */
        !           163: #define DMV_ESTTRIB    0x01            /* establish tributary */
        !           164: #define DMV_REQSUS     0x03            /* request start up state */
        !           165: #define DMV_REQHS      0x05            /* request halt state */
        !           166: #define DMV_WMC                0x10            /* write modem control */
        !           167: #define DMV_RMC                0x11            /* read modem control */
        !           168: 
        !           169:        /* some interesting CNTRLO codes 
        !           170:         *
        !           171:         * use the manual if yours isn't here!!
        !           172:         */
        !           173: 
        !           174: #define        DMV_RTE         0002            /* receive threshold error */
        !           175: #define        DMV_TTE         0004            /* xmit threshold error */
        !           176: #define        DMV_STE         0006            /* select threshold error */
        !           177: #define DMV_ORUN       0024            /* other end enters run state */
        !           178: #define DMV_NXM                0302            /* non-existant memory */
        !           179: #define DMV_MODD       0304            /* modem disconnected */
        !           180: #define DMV_QOVF       0306            /* response queue overflow */
        !           181: #define DMV_CXRL       0310            /* modem cxr lost */
        !           182: 
        !           183: #define DMV_EEC                0377            /* CNTRLO error code mask */

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