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Annotation of Net2/arch/vax/uba/tmscpreg.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1991 The 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:  *     @(#)tmscpreg.h  7.2 (Berkeley) 5/9/91
        !            34:  */
        !            35: 
        !            36: /*     @(#)tmscpreg.h  1.1     11/2/84 84/09/25        */
        !            37: 
        !            38: /****************************************************************
        !            39:  *                                                             *
        !            40:  *        Licensed from Digital Equipment Corporation          *
        !            41:  *                       Copyright (c)                                 *
        !            42:  *               Digital Equipment Corporation                 *
        !            43:  *                   Maynard, Massachusetts                    *
        !            44:  *                         1985, 1986                          *
        !            45:  *                    All rights reserved.                     *
        !            46:  *                                                             *
        !            47:  *        The Information in this software is subject to change *
        !            48:  *   without notice and should not be construed as a commitment *
        !            49:  *   by  Digital  Equipment  Corporation.   Digital   makes  no *
        !            50:  *   representations about the suitability of this software for *
        !            51:  *   any purpose.  It is supplied "As Is" without expressed  or *
        !            52:  *   implied  warranty.                                        *
        !            53:  *                                                             *
        !            54:  *        If the Regents of the University of California or its *
        !            55:  *   licensees modify the software in a manner creating        *
        !            56:  *   diriviative copyright rights, appropriate copyright       *
        !            57:  *   legends may be placed on  the drivative work in addition   *
        !            58:  *   to that set forth above.                                  *
        !            59:  *                                                             *
        !            60:  ****************************************************************/
        !            61: /*
        !            62:  * TMSCP registers and structures
        !            63:  */
        !            64:  
        !            65: struct tmscpdevice {
        !            66:        short   tmscpip;        /* initialization and polling */
        !            67:        short   tmscpsa;        /* status and address */
        !            68: };
        !            69:  
        !            70: #define        TMSCP_ERR               0100000 /* error bit */
        !            71: #define        TMSCP_STEP4     0040000 /* step 4 has started */
        !            72: #define        TMSCP_STEP3     0020000 /* step 3 has started */
        !            73: #define        TMSCP_STEP2     0010000 /* step 2 has started */
        !            74: #define        TMSCP_STEP1     0004000 /* step 1 has started */
        !            75: #define        TMSCP_NV                0002000 /* no host settable interrupt vector */
        !            76: #define        TMSCP_QB                0001000 /* controller supports Q22 bus */
        !            77: #define        TMSCP_DI                0000400 /* controller implements diagnostics */
        !            78: #define        TMSCP_OD                0000200 /* port allows odd host addr's in the buffer descriptor */
        !            79: #define        TMSCP_IE                0000200 /* interrupt enable */
        !            80: #define        TMSCP_MP                0000100 /* port supports address mapping */
        !            81: #define        TMSCP_LF                0000002 /* host requests last fail response packet */
        !            82: #define        TMSCP_PI                0000001 /* host requests adapter purge interrupts */
        !            83: #define        TMSCP_GO                0000001 /* start operation, after init */
        !            84:  
        !            85:  
        !            86: /*
        !            87:  * TMSCP Communications Area
        !            88:  */
        !            89:  
        !            90: struct tmscpca {
        !            91:        short   ca_xxx1;        /* unused */
        !            92:        char    ca_xxx2;        /* unused */
        !            93:        char    ca_bdp;         /* BDP to purge */
        !            94:        short   ca_cmdint;      /* command queue transition interrupt flag */
        !            95:        short   ca_rspint;      /* response queue transition interrupt flag */
        !            96:        long    ca_rspdsc[NRSP];/* response descriptors */
        !            97:        long    ca_cmddsc[NCMD];/* command descriptors */
        !            98: };
        !            99:  
        !           100: #define        ca_ringbase     ca_rspdsc[0]
        !           101:  
        !           102: #define        TMSCP_OWN       0x80000000      /* port owns this descriptor (else host
        !           103:  owns it) */
        !           104: #define        TMSCP_INT       0x40000000      /* allow interrupt on ring transition */
        !           105:  
        !           106: #define        TMSCP_MAP       0x80000000      /* modifier for mapped buffer descriptors */
        !           107:  
        !           108: /*
        !           109:  * TMSCP packet info (same as MSCP)
        !           110:  */
        !           111: struct mscp_header {
        !           112:        short   tmscp_msglen;   /* length of MSCP packet */
        !           113:        char    tmscp_credits;  /* low 4 bits: credits, high 4 bits: msgtype */
        !           114:        char    tmscp_vcid;     /* virtual circuit id (connection id) */
        !           115: };

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