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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Digital Equipment Corp.
        !             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_qereg.h  7.3 (Berkeley) 6/28/90
        !            37:  */
        !            38: 
        !            39: /* @(#)if_qereg.h      1.2 (ULTRIX) 1/3/85 */
        !            40:  
        !            41: /****************************************************************
        !            42:  *                                                             *
        !            43:  *        Licensed from Digital Equipment Corporation          *
        !            44:  *                       Copyright (c)                                 *
        !            45:  *               Digital Equipment Corporation                 *
        !            46:  *                   Maynard, Massachusetts                    *
        !            47:  *                         1985, 1986                          *
        !            48:  *                    All rights reserved.                     *
        !            49:  *                                                             *
        !            50:  *        The Information in this software is subject to change *
        !            51:  *   without notice and should not be construed as a commitment *
        !            52:  *   by  Digital  Equipment  Corporation.   Digital   makes  no *
        !            53:  *   representations about the suitability of this software for *
        !            54:  *   any purpose.  It is supplied "As Is" without expressed  or *
        !            55:  *   implied  warranty.                                        *
        !            56:  *                                                             *
        !            57:  *        If the Regents of the University of California or its *
        !            58:  *   licensees modify the software in a manner creating        *
        !            59:  *   diriviative copyright rights, appropriate copyright       *
        !            60:  *   legends may be placed on  the drivative work in addition   *
        !            61:  *   to that set forth above.                                  *
        !            62:  *                                                             *
        !            63:  ****************************************************************/
        !            64: /* ---------------------------------------------------------------------
        !            65:  * Modification History 
        !            66:  *
        !            67:  *  13 Feb. 84 -- rjl
        !            68:  *
        !            69:  *     Initial version of driver. derived from IL driver.
        !            70:  * 
        !            71:  * ---------------------------------------------------------------------
        !            72:  */
        !            73:  
        !            74: /*
        !            75:  * Digital Q-BUS to NI Adapter 
        !            76:  */
        !            77: struct qedevice {
        !            78:        u_short qe_sta_addr[2];         /* Station address (actually 6  */
        !            79:        u_short qe_rcvlist_lo;          /* Receive list lo address      */
        !            80:        u_short qe_rcvlist_hi;          /* Receive list hi address      */
        !            81:        u_short qe_xmtlist_lo;          /* Transmit list lo address     */
        !            82:        u_short qe_xmtlist_hi;          /* Transmit list hi address     */
        !            83:        u_short qe_vector;              /* Interrupt vector             */
        !            84:        u_short qe_csr;                 /* Command and Status Register  */
        !            85: };
        !            86:  
        !            87: /*
        !            88:  * Command and status bits (csr)
        !            89:  */
        !            90: #define QE_RCV_ENABLE  0x0001          /* Receiver enable              */
        !            91: #define QE_RESET       0x0002          /* Software reset               */
        !            92: #define QE_NEX_MEM_INT 0x0004          /* Non existant mem interrupt   */
        !            93: #define QE_LOAD_ROM    0x0008          /* Load boot/diag from rom      */
        !            94: #define QE_XL_INVALID  0x0010          /* Transmit list invalid        */
        !            95: #define QE_RL_INVALID  0x0020          /* Receive list invalid         */
        !            96: #define QE_INT_ENABLE  0x0040          /* Interrupt enable             */
        !            97: #define QE_XMIT_INT    0x0080          /* Transmit interrupt           */
        !            98: #define QE_ILOOP       0x0100          /* Internal loopback            */
        !            99: #define QE_ELOOP       0x0200          /* External loopback            */
        !           100: #define QE_STIM_ENABLE 0x0400          /* Sanity timer enable          */
        !           101: #define QE_POWERUP     0x1000          /* Tranceiver power on          */
        !           102: #define QE_CARRIER     0x2000          /* Carrier detect               */
        !           103: #define QE_RCV_INT     0x8000          /* Receiver interrupt           */
        !           104:  
        !           105: /*
        !           106:  * Transmit and receive ring discriptor ---------------------------
        !           107:  *
        !           108:  * The QNA uses the flag, status1 and the valid bit as a handshake/semiphore
        !           109:  * mechinism. 
        !           110:  * 
        !           111:  * The flag word is written on ( bits 15,15 set to 1 ) when it reads the
        !           112:  * descriptor. If the valid bit is set it considers the address to be valid.
        !           113:  * When it uses the buffer pointed to by the valid address it sets status word
        !           114:  * one.
        !           115:  */
        !           116: struct qe_ring {
        !           117:        u_short qe_flag;                /* Buffer utilization flags     */
        !           118:        u_short qe_addr_hi:6,           /* Hi order bits of buffer addr */
        !           119:              qe_odd_begin:1,           /* Odd byte begin and end (xmit)*/
        !           120:              qe_odd_end:1,
        !           121:              qe_fill1:4,
        !           122:              qe_setup:1,               /* Setup packet                 */
        !           123:              qe_eomsg:1,               /* End of message flag          */
        !           124:              qe_chain:1,               /* Chain address instead of buf */
        !           125:              qe_valid:1;               /* Address field is valid       */
        !           126:        u_short qe_addr_lo;             /* Low order bits of address    */
        !           127:        short qe_buf_len;               /* Negative buffer length       */
        !           128:        u_short qe_status1;             /* Status word one              */
        !           129:        u_short qe_status2;             /* Status word two              */
        !           130: };
        !           131:  
        !           132: /*
        !           133:  * Status word definations (receive)
        !           134:  *     word1
        !           135:  */
        !           136: #define QE_OVF                 0x0001  /* Receiver overflow            */
        !           137: #define QE_CRCERR              0x0002  /* CRC error                    */
        !           138: #define QE_FRAME               0x0004  /* Framing alignment error      */
        !           139: #define QE_SHORT               0x0008  /* Packet size < 10 bytes       */
        !           140: #define QE_RBL_HI              0x0700  /* Hi bits of receive len       */
        !           141: #define QE_RUNT                        0x0800  /* Runt packet                  */
        !           142: #define QE_DISCARD             0x1000  /* Discard the packet           */
        !           143: #define QE_ESETUP              0x2000  /* Looped back setup or eloop   */
        !           144: #define QE_ERROR               0x4000  /* Receiver error               */
        !           145: #define QE_LASTNOT             0x8000  /* Not the last in the packet   */
        !           146: /*     word2                                                           */
        !           147: #define QE_RBL_LO              0x00ff  /* Low bits of receive len      */
        !           148:  
        !           149: /*
        !           150:  * Status word definations (transmit)
        !           151:  *     word1
        !           152:  */
        !           153: #define QE_CCNT                        0x00f0  /* Collision count this packet  */
        !           154: #define QE_FAIL                        0x0100  /* Heart beat check failure     */
        !           155: #define QE_ABORT               0x0200  /* Transmission abort           */
        !           156: #define QE_STE16               0x0400  /* Sanity timer default on      */
        !           157: #define QE_NOCAR               0x0800  /* No carrier                   */
        !           158: #define QE_LOSS                        0x1000  /* Loss of carrier while xmit   */
        !           159: /*     word2                                                           */
        !           160: #define QE_TDR                 0x3fff  /* Time domain reflectometry    */
        !           161:  
        !           162: /*
        !           163:  * General constant definations
        !           164:  */
        !           165: #define QEALLOC                0       /* Allocate an mbuf             */
        !           166: #define QENOALLOC              1       /* No mbuf allocation           */
        !           167: #define QEDEALLOC              2       /* Release an mbuf chain        */
        !           168:  
        !           169: #define QE_NOTYET              0x8000  /* Descriptor not in use yet    */
        !           170: #define QE_INUSE               0x4000  /* Descriptor being used by QNA */
        !           171: #define QE_MASK                        0xc000  /* Lastnot/error/used mask      */

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