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Annotation of Net2/arch/tahoe/if/if_exreg.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1989 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Excelan Inc.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. All advertising materials mentioning features or use of this software
        !            17:  *    must display the following acknowledgement:
        !            18:  *     This product includes software developed by the University of
        !            19:  *     California, Berkeley and its contributors.
        !            20:  * 4. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)if_exreg.h  7.3 (Berkeley) 6/28/90
        !            37:  */
        !            38: 
        !            39: struct exdevice {
        !            40:        ushort  ex_porta;       /* write on porta resets EXOS */
        !            41:        ushort  ex_portb;       /* write on portb interrupts EXOS */
        !            42: };
        !            43: 
        !            44: /* EXOS I/O PORT A write definitions */
        !            45: #define        EX_RESET        0       /* value doesn't really matter... */
        !            46: 
        !            47: /* EXOS I/O PORT B write definitions */
        !            48: #define        EX_NTRUPT       0
        !            49: 
        !            50: /* EXOS I/O PORT B read definitions */
        !            51: #define        EX_TESTOK       1       /* set when self-diagnostics passed */
        !            52: #define        EX_UNREADY      (1<<3)  /* set until EXOS ready to read from B */
        !            53: 
        !            54: /* message buffer status field definitions */
        !            55: #define        MH_OWNER        1       /* mask for status bit for owner */
        !            56: #define        MH_HOST         0       /* if 0, the host owns the buffer */
        !            57: #define        MH_EXOS         1       /* if 1, the EXOS owns the buffer */
        !            58: 
        !            59: /* EXOS Link Level request codes */
        !            60: #define        LLTRANSMIT      0xC     /* send a packet */
        !            61: #define        LLRTRANSMIT     0xE     /* send a packet, and self-receive */
        !            62: #define        LLRECEIVE       0xD     /* receive a packet */
        !            63: #define        LLNET_MODE      0x8     /* read/write mode control objects */
        !            64: #define        LLNET_ADDRS     0x9     /* read/write receive address slots */
        !            65: #define        LLNET_RECV      0xA     /* read/alter receive slot enable bit */
        !            66: #define        LLNET_STSTCS    0xB     /* read/reset network statistics objects */
        !            67: 
        !            68: /* Link Level return codes common to all requests */
        !            69: #define        LL_OK           0       /* successful completion */
        !            70: #define        LLX_MODE        0xA1    /* EXOS not in link level mode (impossible) */
        !            71: 
        !            72: /* LLTRANSMIT unique return codes */
        !            73: #define        LLXM_1RTRY      0x1     /* successful xmission, 1 retry */
        !            74: #define        LLXM_RTRYS      0x2     /* successful xmission, more than 1 retry */
        !            75: #define        LLXM_NSQE       0x8     /* successful xmission, no SQE TEST signal */
        !            76: #define        LLXM_CLSN       0x10    /* xmission failed, excess retries */
        !            77: #define        LLXM_NCS        0x20    /* xmission failed, no carrier sense */
        !            78: #define        LLXM_LNGTH      0x40    /* xmission failed, bad packet length */
        !            79: #define        XMIT_BITS       "\7\7LENGTH\6CARRIER\5XCLSNS\4SQETST"
        !            80: /*#define      LLXM_ERROR      (LLXM_NSQE|LLXM_CLSN|LLXM_NCS|LLXM_LNGTH)*/
        !            81: #define        LLXM_ERROR      (LLXM_CLSN|LLXM_NCS|LLXM_LNGTH)
        !            82: 
        !            83: /* LLRECEIVE unique return codes */
        !            84: #define        LLRC_TRUNC      0x4     /* pkt received, but truncated to fit buffer */
        !            85: #define        LLRC_ALIGN      0x10    /* pkt received, but with alignment error */
        !            86: #define        LLRC_CRC        0x20    /* pkt received, but with CRC error */
        !            87: #define        LLRC_BUFLEN     0x40    /* no pkt received, buffer less than 64 bytes */
        !            88:                                /* this should never happen here */
        !            89: #define        RECV_BITS       "\7\7BUFLEN\6CRC\5ALIGN\3TRUNC"
        !            90: 
        !            91: /* LLNET_ADDRS unique return codes */
        !            92: #define        LLNA_BADSLOT    0xD1    /* slot doesn't exist or can't be accessed */
        !            93: #define        LLNA_BADADDR    0xD3    /* invalid address for designated slot */
        !            94: 
        !            95: /* LLNET_RECV unique return codes */
        !            96: #define        LLNR_BADSLOT    0xD1    /* slot doesn't exist or can't be accessed */
        !            97: #define        LLNR_BADADDR    0xD2    /* designated slot was empty */
        !            98: 
        !            99: /* address slot object indices */
        !           100: #define        NULLSLOT        0       /* the null slot */
        !           101: #define        MINMCSLOT       1       /* minimum multicast slot index */
        !           102: #define        MAXMCSLOT       8       /* default maximum multicast slot index */
        !           103: #define        PHYSSLOT        253     /* physical slot index */
        !           104: #define        UNVRSSLOT       254     /* universal slot index */
        !           105: #define        BROADSLOT       255     /* broadcast slot index */
        !           106: 
        !           107: /* request mask bit definitions */
        !           108: #define        WRITE_OBJ       1       /* write the object */
        !           109: #define        READ_OBJ        2       /* read the object */
        !           110: #define        ENABLE_RCV      4       /* enable reception on designated slot */
        !           111: 
        !           112: /* NET_MODE options mask bit definitions */
        !           113: #define        OPT_ALIGN       0x10    /* receive packets with alignment errors */
        !           114: #define        OPT_CRC         0x20    /* receive packets with CRC errors */
        !           115: #define        OPT_DSABLE      0x80    /* disconnect controller hardware */
        !           116: 
        !           117: /* NET_MODE mode field value definitions */
        !           118: #define        MODE_OFF        0       /* stop transmission and reception */
        !           119: #define        MODE_PERF       1       /* perfect multicast address filtering */
        !           120: #define        MODE_HW         2       /* hardware-only multicast address filtering */
        !           121: #define        MODE_PROM       3       /* promiscuous reception */
        !           122: 
        !           123: #define        NFRAGMENTS 8    /* number fragments that the EXOS will scatter/gather */
        !           124: #define        EXMAXRBUF 1518  /* per EXOS 202 manual 5.3.7 (maybe 1518 would do) */
        !           125: 
        !           126: /*
        !           127:  * N.B.  Structures below are carefully constructed so that
        !           128:  * they correspond to the message formats that NX firmware
        !           129:  * defines.  None of them should contain any compiler-instigated
        !           130:  * padding.  Be especially careful about VAX C longword alignment!
        !           131:  */
        !           132: 
        !           133: struct ex_stat {
        !           134:        u_long  sa_fsent;       /* frames sent without errors */
        !           135:        u_long  sa_xsclsn;      /* frames aborted excess collisions */
        !           136:        u_long  sa_nsqe;        /* frames subject to heartbeat failure */
        !           137:        u_long  sa_undef;       /* undefined (TDR on EXOS 101) */
        !           138:        u_long  sa_frcvd;       /* frames received no errors */
        !           139:        u_long  sa_align;       /* frames received alignment error */
        !           140:        u_long  sa_crc;         /* frames received crc error */
        !           141:        u_long  sa_flost;       /* frames lost */
        !           142: };
        !           143: 
        !           144: struct buf_blk {               /* packet/buffer block descriptor */
        !           145:        u_short bb_len;                 /* length of block, in bytes */
        !           146:        struct  i86_long {
        !           147:            u_short     realaddr[2];            /* address of block */
        !           148:        }       bb_addr;
        !           149:        /*
        !           150:         * Array above is really a single u_long field.
        !           151:         * We kludge its definition to defeat word-alignment.
        !           152:         */
        !           153: };
        !           154: 
        !           155: struct net_mode {              /* read/write mode control objects */
        !           156: /*12*/ u_char  nm_rqst;        /* request code */
        !           157: /*13*/ u_char  nm_rply;        /* reply code */
        !           158: /*14*/ u_char  nm_mask;                /* bit-wise switches for read, write */
        !           159: /*15*/ u_char  nm_optn;                /* acceptable packet reception errors */
        !           160: /*16*/ u_char  nm_mode;                /* EXOS filtering mode */
        !           161: /*17*/
        !           162: };
        !           163: 
        !           164: struct net_addrs {             /* read/write receive address slots */
        !           165: /*12*/ u_char  na_rqst;        /* request code */
        !           166: /*13*/ u_char  na_rply;        /* reply code */
        !           167: /*14*/ u_char  na_mask;                /* bit-wise switches for read, write */
        !           168: /*15*/ u_char  na_slot;                /* index of address slot */
        !           169: /*16*/ u_char  na_addrs[6];            /* address read and/or written */
        !           170: /*22*/
        !           171: };
        !           172: 
        !           173: struct net_recv {              /* read/alter receive slot enable bit */
        !           174: /*12*/ u_char  nr_rqst;        /* request code */
        !           175: /*13*/ u_char  nr_rply;        /* reply code */
        !           176: /*14*/ u_char  nr_mask;                /* bit-wise switches for read, write */
        !           177: /*15*/ u_char  nr_slot;                /* index of address slot */
        !           178: /*16*/
        !           179: };
        !           180: 
        !           181: struct net_ststcs {            /* read/reset network statistics objects */
        !           182: /*12*/ u_char  ns_rqst;        /* request code */
        !           183: /*13*/ u_char  ns_rply;        /* reply code */
        !           184: /*14*/ u_char  ns_mask;                /* bit-wise switches for read, write */
        !           185: /*15*/ u_char  ns_rsrv;                /* reserved for EXOS */
        !           186: /*16*/ u_short ns_nobj;                /* number of objects to work on */
        !           187: /*18*/ u_short ns_xobj;                /* index of first object to work on */
        !           188: /*20*/ u_long  ns_bufp;                /* pointer to statistics buffer */
        !           189: /*24*/
        !           190: };
        !           191: 
        !           192: struct enet_xmit {             /* send a packet on the Ethernet */
        !           193: /*12*/ u_char  et_rqst;        /* request code */
        !           194: /*13*/ u_char  et_rply;        /* reply code */
        !           195: /*14*/ u_char  et_slot;                /* address slot matching dest address */
        !           196: /*15*/ u_char  et_nblock;              /* number of blocks composing packet */
        !           197: /*16*/ struct  buf_blk et_blks[NFRAGMENTS];    /* array of block descriptors */
        !           198: /*22-64*/
        !           199: };
        !           200: 
        !           201: struct enet_recv {             /* receive a packet on the Ethernet */
        !           202: /*12*/ u_char  er_rqst;        /* request code */
        !           203: /*13*/ u_char  er_rply;        /* reply code */
        !           204: /*14*/ u_char  er_slot;                /* address slot matching dest address */
        !           205: /*15*/ u_char  er_nblock;              /* number of blocks composing buffer */
        !           206: /*16*/ struct  buf_blk er_blks[NFRAGMENTS];    /* array of block descriptors */
        !           207: /*22-64*/
        !           208: };
        !           209: 
        !           210: /* we send requests and receive replys with the EXOS using this structure */
        !           211: struct ex_msg {
        !           212: /*00*/ u_short mb_link;        /* address of next message buffer */
        !           213: /*02*/ u_char  mb_rsrv;        /* reserved for use by EXOS */
        !           214: /*03*/ u_char  mb_status;      /* used bit-wise for message protocol */
        !           215: /*04*/ u_short mb_length;      /* length, in bytes, of the rest */
        !           216: /*06*/ short   mb_1rsrv;       /* reserved for used by EXOS */
        !           217: /*08*/ struct  ifvba *mb_pkb;  /* available to user */
        !           218: /*12*/ union   mb_all {
        !           219:                struct  net_mode        mb_net_mode;
        !           220:                struct  net_addrs       mb_net_addrs;
        !           221:                struct  net_recv        mb_net_recv;
        !           222:                struct  net_ststcs      mb_net_ststcs;
        !           223:                struct  enet_xmit       mb_enet_xmit;
        !           224:                struct  enet_recv       mb_enet_recv;
        !           225:        } mb_all;
        !           226: /* following field is used only by host, not read by board */
        !           227:        struct  ex_msg *mb_next;        /* host's pointer to next message */
        !           228: };
        !           229: #define        mb_nm   mb_all.mb_net_mode
        !           230: #define        mb_na   mb_all.mb_net_addrs
        !           231: #define        mb_nr   mb_all.mb_net_recv
        !           232: #define        mb_ns   mb_all.mb_net_ststcs
        !           233: #define        mb_et   mb_all.mb_enet_xmit
        !           234: #define        mb_er   mb_all.mb_enet_recv
        !           235: #define        mb_rqst mb_nm.nm_rqst
        !           236: #define        mb_rply mb_nm.nm_rply
        !           237: #define        MBDATALEN (sizeof(union mb_all)+6)
        !           238: 
        !           239: struct ex_conf {
        !           240: /*00*/ u_short cm_1rsrv;       /* reserved, must be 1 */
        !           241: /*02*/ char    cm_vc[4];       /* returns ASCII version code */
        !           242: /*06*/ u_char  cm_cc;          /* returns config completion code */
        !           243: /*07*/ u_char  cm_opmode;      /* specifies operation mode */
        !           244: /*08*/ u_short cm_dfo;         /* specifies host data format option */
        !           245: /*00*/ u_char  cm_dcn1;        /* reserved, must be 1 */
        !           246: /*11*/ u_char  cm_2rsrv[2];    /* reserved, must be 0 */
        !           247: /*13*/ u_char  cm_ham;         /* specifies host address mode */
        !           248: /*14*/ u_char  cm_3rsrv;       /* reserved, must be 0 */
        !           249: /*15*/ u_char  cm_mapsiz;      /* reserved, must be 0 */
        !           250: /*16*/ u_char  cm_byteptrn[4]; /* host data format option test pattern */
        !           251: /*20*/ u_short cm_wordptrn[2];
        !           252: /*24*/ u_long  cm_lwordptrn;
        !           253: /*28*/ u_char  cm_rsrvd[20];
        !           254: /*48*/ u_long  cm_mba;         /* use 0xFFFFFFFF in link level mode */
        !           255: /*52*/ u_char  cm_nproc;       /* use 0xFF in link level mode */
        !           256: /*53*/ u_char  cm_nmbox;       /* use 0xFF in link level mode */
        !           257: /*54*/ u_char  cm_nmcast;      /* use 0xFF in link level mode */
        !           258: /*55*/ u_char  cm_nhost;       /* use 1 in link level mode */
        !           259: 
        !           260:        /* the next five parameters define the request message queue */
        !           261: /*56*/ u_long  cm_h2xba;       /* base address of message queue */
        !           262: /*60*/ u_short cm_h2xhdr;      /* address offset of msg Q header */
        !           263: /*62*/ u_char  cm_h2xtyp;      /* interrupt type */
        !           264: /*63*/ u_char  cm_h2xval;      /* interrupt value (not used) */
        !           265: /*64*/ u_short cm_h2xaddr;     /* interrupt vector */
        !           266: /*66*/ u_short cm_h2xpad;      /* pad out unused portion of vector */
        !           267: 
        !           268:        /* the next five parameters define the reply message queue */
        !           269: /*68*/ u_long  cm_x2hba;       /* base address of message queue */
        !           270: /*72*/ u_short cm_x2hhdr;      /* address offset of msg Q header */
        !           271: /*74*/ u_char  cm_x2htyp;      /* interrupt type */
        !           272: /*75*/ u_char  cm_x2hval;      /* interrupt value (not used) */
        !           273: /*76*/ u_short cm_x2haddr;     /* interrupt vector */
        !           274: /*78*/ u_short cm_x2hpad;      /* pad out unused portion of vector */
        !           275: /*80*/
        !           276: };

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