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Annotation of 43BSDTahoe/sys/vaxif/if_hyreg.h, revision 1.1

1.1     ! root        1: /*
        !             2:  *     @(#)if_hyreg.h  7.1 (Berkeley) 6/5/86
        !             3:  *
        !             4:  * $Header: if_hyreg.h,v 10.0 84/06/30 19:51:34 steveg Stable $
        !             5:  * $Locker:  $
        !             6:  *
        !             7:  * Modifications from Berkeley 4.2 BSD
        !             8:  * Copyright (c) 1983, Tektronix Inc.
        !             9:  * All Rights Reserved
        !            10:  *
        !            11:  */
        !            12: 
        !            13: 
        !            14: /*
        !            15:  * Network Systems Corporation Hyperchannel interface
        !            16:  *
        !            17:  * supports A410 adapter interfaced via a DEC DR-11B, NSC PI-13 or PI-14
        !            18:  *     (PI-14 is a PI-13 with different line drivers, software is
        !            19:  *     identical to a PI-13)
        !            20:  *
        !            21:  * Written by Steve Glaser, Tektronix Inc., July 1982
        !            22:  *
        !            23:  * NOTE:
        !            24:  *
        !            25:  * DR11B code has not been fully checked out with 4.1a.
        !            26:  * The first adapters at Tek came with DR11Bs, and the code once worked,
        !            27:  * but those have been upgraded to PI-13s.
        !            28:  */
        !            29: 
        !            30: /*
        !            31:  * The HYPERchannel driver sends and receives messages formatted:
        !            32:  *
        !            33:  *     +---------------------------------------+       ---
        !            34:  *     |                                       |       /|\
        !            35:  *     |  HYPERchannel adapter header (hy_hdr) |        |
        !            36:  *     |                                       |        |
        !            37:  *     +---------------------------------------+        |
        !            38:  *     |                                       |        |
        !            39:  *     |     Internet Protocol header (ip)     |    message proper
        !            40:  *     |                                       |    (64 bytes max)
        !            41:  *     +---------------------------------------+        |
        !            42:  *     |                                       |        |
        !            43:  *     |       TCP header + user data          |        |
        !            44:  *     |       (if it all fits here)           |        |
        !            45:  *     |                                       |       \|/
        !            46:  *     +---------------------------------------+       ---
        !            47:  *
        !            48:  *     +---------------------------------------+       ---
        !            49:  *     |                                       |       /|\
        !            50:  *     |                                       |        |
        !            51:  *     |       TCP header + user data          |  associated data
        !            52:  *     |                                       |        |
        !            53:  *     |                                       |       \|/
        !            54:  *     +---------------------------------------+       ---
        !            55:  *
        !            56:  * If all of the datagram will fit in the message proper (including
        !            57:  * the TCP header and user data) the entire datagram is passed in
        !            58:  * the message proper and the associated data feature of the HYPERchannel
        !            59:  * is not used.
        !            60:  *
        !            61:  * The mapping from internet addresses to HYPERchannel addresses is:
        !            62:  *
        !            63:  *      0       7 8      15 16                   31
        !            64:  *     +---------+---------+-----------------------+
        !            65:  *     | network | special | HYPERchannel address  |
        !            66:  *     +---------+---------+-----------------------+
        !            67:  *
        !            68:  *     |<------------ internet address ----------->|
        !            69:  *
        !            70:  * The hyperchannel address is decoded as follows:
        !            71:  *
        !            72:  *       0                 7 8             13 14  15
        !            73:  *     +-------------------+----------------+------+
        !            74:  *     |   adapter number  |      zero      | port |
        !            75:  *     +-------------------+----------------+------+
        !            76:  *
        !            77:  * The low 2 bits are port number (interpreted by hyperchannel hardware).
        !            78:  *
        !            79:  * The encoding of special bits is:
        !            80:  *
        !            81:  *     00      normal packet
        !            82:  *
        !            83:  *     01      loop this packet back to the sender at the
        !            84:  *             specified adapter (ip header source/destination addresses
        !            85:  *             swapped before sending, command bits added to tell the
        !            86:  *             remote HYPERchannel adapter debug & performance studies]
        !            87:  *             this code acts like 02 (below) if the ip destination (before
        !            88:  *             any swapping) and the destination address don't match (e.g.
        !            89:  *             this packet is being routed through a gateway)
        !            90:  *
        !            91:  *     02      loop this packet back to the sender at the
        !            92:  *             specified adapter, but go through the specified adapter's
        !            93:  *             IP.  This is for testing IP's store and forward mechanism.
        !            94:  *
        !            95:  *     other   undefined, currently treated as normal packet
        !            96:  *
        !            97:  */
        !            98: #define MPSIZE         64      /* "Message Proper" size */
        !            99: #define MAXRETRY       4
        !           100: 
        !           101: /*
        !           102:  * Device registers
        !           103:  */
        !           104: struct hydevice {
        !           105:        short   hyd_wcr;        /* word count (negated) */
        !           106:        u_short hyd_bar;        /* bus address bits 15-0 */
        !           107:        u_short hyd_csr;        /* control and status */
        !           108:        u_short hyd_dbuf;       /* data buffer */
        !           109: };
        !           110: 
        !           111: /*
        !           112:  * CSR bit layout
        !           113:  */
        !           114: #define        S_ERROR    0100000      /* error */
        !           115: #define        S_NEX      0040000      /* non-existent memory error */
        !           116: #define        S_ATTN     0020000      /* attn (always zero) */
        !           117: #ifdef PI13
        !           118: #define S_STKINTR  0010000     /* stacked interrupt */
        !           119: #else
        !           120: #define        S_MAINT    0010000      /* maintenance (not used) */
        !           121: #endif
        !           122: #define        S_A        0004000      /* device status A (recieve data available) */
        !           123: #define        S_B        0002000      /* device status B (normal termination) */
        !           124: #define        S_C        0001000      /* device status C (abnormal termination) */
        !           125: #ifdef PI13
        !           126: #define S_POWEROFF 0000400     /* power off indicator */
        !           127: #else
        !           128: #define        S_CYCLE    0000400      /* cycle (not used) */
        !           129: #endif
        !           130: #define        S_READY    0000200      /* ready */
        !           131: #define        S_IE       0000100      /* interrupt enable */
        !           132: #define        S_XBA      0000060      /* bus address bit bits 17 and 16 */
        !           133: #define S_CLRINT   0000014     /* clear stacked interrupt */
        !           134: #define        S_IATTN    0000010      /* interrupt on attention only */
        !           135: #define S_WC       0000004     /* interrupt on word count == 0 only */
        !           136: #define S_IATTNWC  0000000     /* interrupt on word count == 0 and attention */
        !           137: #define        S_BURST    0000002      /* burst mode DMA (not used) */
        !           138: #define        S_GO       0000001      /* go */
        !           139: 
        !           140: #define XBASHIFT       12
        !           141: 
        !           142: #define HY_CSR_BITS "\20\
        !           143: \20ERROR\17NEX\16ATTN\15STKINTR\14RECV_DATA\13NORMAL\12ABNORMAL\11POWER\
        !           144: \10READY\07IENABLE\06XBA17\05XBA16\04IATTN\03IWC\02BURST\01GO"
        !           145: 
        !           146: /*
        !           147:  * PI13 status conditions
        !           148:  */
        !           149: #define        HYS_RECVDATA(x) (((x)->hyd_csr & S_A) != 0)     /* get adapter data */
        !           150: #define        HYS_NORMAL(x)   (((x)->hyd_csr & S_B) != 0)     /* done normally */
        !           151: #define        HYS_ABNORMAL(x) (((x)->hyd_csr & S_C) != 0)     /* done abnormally */
        !           152: #define        HYS_ERROR(x)    (((x)->hyd_csr & S_ERROR) != 0) /* error condition */
        !           153: #define        HYS_DONE(x)     (((x)->hyd_csr & (S_ERROR|S_B|S_C)) != 0)
        !           154: 
        !           155: /*
        !           156:  * Function Codes for the Hyperchannel Adapter
        !           157:  * The codes are offset so they can be "or"ed into
        !           158:  * the reg data buffer
        !           159:  */
        !           160: #define        HYF_XMITMSG     0x04    /* transmit message */
        !           161: #define        HYF_XMITDATA    0x08    /* transmit associated data */
        !           162: #define        HYF_XMITLSTDATA 0x0C    /* transmit last associated data */
        !           163: #define        HYF_XMITLOCMSG  0x10    /* transmit local message */
        !           164: #define        HYF_INPUTMSG    0x24    /* input message proper */
        !           165: #define        HYF_INPUTDATA   0x28    /* input assiciated data */
        !           166: #define        HYF_STATUS      0x40    /* request status */
        !           167: #define        HYF_DUMPREGS    0x50    /* dump extention registers */
        !           168: #define        HYF_MARKP0      0x60    /* mark down port 0 */
        !           169: #define        HYF_MARKP1      0x64    /* mark down port 1 */
        !           170: #define        HYF_MARKP2      0x68    /* mark down port 2 */
        !           171: #define        HYF_MARKP3      0x6C    /* mark down port 3 */
        !           172: #define        HYF_MP0RR       0x70    /* mark down port 0 and reroute messages */
        !           173: #define        HYF_MP1RR       0x74    /* mark down port 1 and reroute messages */
        !           174: #define        HYF_MP2RR       0x78    /* mark down port 2 and reroute messages */
        !           175: #define        HYF_MP3RR       0x7C    /* mark down port 3 and reroute messages */
        !           176: #define        HYF_RSTATS      0xA0    /* read statistics */
        !           177: #define        HYF_RCSTATS     0xA4    /* read and clear statistics */
        !           178: #define        HYF_SETTEST     0xC0    /* enable test operations *set test mode) */
        !           179: #define        HYF_SADDR_LEN   0xC4    /* test mode: set address and length */
        !           180: #define        HYF_WBUFF       0xC8    /* test mode: write buffer */
        !           181: #define        HYF_RBUFF       0xCC    /* test mode: read buffer */
        !           182: #define HYF_CLRADAPTER 0xE0    /* clear adapter */
        !           183: #define        HYF_END_OP      0xE4    /* end operation */
        !           184: #define        HYF_CLRWFMSG    0xE6    /* clear wait for mwssage */
        !           185: #define        HYF_WAITFORMSG  0xE8    /* wait for message */

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