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Annotation of sys/arch/alpha/tc/sccvar.h, Revision 1.1

1.1     ! nbrk        1: /* $OpenBSD: sccvar.h,v 1.6 2003/06/02 23:27:44 millert Exp $ */
        !             2: /* $NetBSD: sccvar.h,v 1.7 2001/08/26 16:39:56 simonb Exp $ */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1991,1990,1989,1994,1995 Carnegie Mellon University
        !             6:  * All Rights Reserved.
        !             7:  *
        !             8:  * Permission to use, copy, modify and distribute this software and its
        !             9:  * documentation is hereby granted, provided that both the copyright
        !            10:  * notice and this permission notice appear in all copies of the
        !            11:  * software, derivative works or modified versions, and any portions
        !            12:  * thereof, and that both notices appear in supporting documentation.
        !            13:  *
        !            14:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            15:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            16:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            17:  *
        !            18:  * Carnegie Mellon requests users of this software to return to
        !            19:  *
        !            20:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
        !            21:  *  School of Computer Science
        !            22:  *  Carnegie Mellon University
        !            23:  *  Pittsburgh PA 15213-3890
        !            24:  *
        !            25:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            26:  * the rights to redistribute these changes.
        !            27:  */
        !            28:
        !            29: /*-
        !            30:  * Copyright (c) 1992, 1993
        !            31:  *     The Regents of the University of California.  All rights reserved.
        !            32:  *
        !            33:  * This code is derived from software contributed to Berkeley by
        !            34:  * Ralph Campbell and Rick Macklem.
        !            35:  *
        !            36:  * Redistribution and use in source and binary forms, with or without
        !            37:  * modification, are permitted provided that the following conditions
        !            38:  * are met:
        !            39:  * 1. Redistributions of source code must retain the above copyright
        !            40:  *    notice, this list of conditions and the following disclaimer.
        !            41:  * 2. Redistributions in binary form must reproduce the above copyright
        !            42:  *    notice, this list of conditions and the following disclaimer in the
        !            43:  *    documentation and/or other materials provided with the distribution.
        !            44:  * 3. Neither the name of the University nor the names of its contributors
        !            45:  *    may be used to endorse or promote products derived from this software
        !            46:  *    without specific prior written permission.
        !            47:  *
        !            48:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            49:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            50:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            51:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            52:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            53:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            54:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            55:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            56:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            57:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            58:  * SUCH DAMAGE.
        !            59:  *
        !            60:  *     from: @(#)sccreg.h      8.1 (Berkeley) 6/10/93
        !            61:  */
        !            62:
        !            63: /*
        !            64:  * Definitions for Intel 82530 serial communications chip.  Each chip is a
        !            65:  * dual uart with the A channels used for the keyboard and mouse with the B
        !            66:  * channel(s) for comm ports with modem control. Since some registers are
        !            67:  * used for the other channel, the following macros are used to access the
        !            68:  * register ports.
        !            69:  */
        !            70:
        !            71: #if 1
        !            72: #define alpha_sparse
        !            73: #endif
        !            74:
        !            75: #define        DENSE
        !            76: #ifdef alpha_sparse
        !            77: #undef DENSE
        !            78: #define        SPARSE
        !            79: #endif
        !            80:
        !            81: typedef struct {
        !            82:        struct {
        !            83:                volatile u_int  scc_command;    /* Register select. */
        !            84: #ifdef SPARSE
        !            85:                u_int           scc_pad0;
        !            86: #endif
        !            87:                volatile u_int  scc_data;       /* Rx/Tx buffer */
        !            88: #ifdef SPARSE
        !            89:                u_int           scc_pad1;
        !            90: #endif
        !            91:        } scc_channel[2];
        !            92: } scc_regmap_t;
        !            93:
        !            94: #define        scc_get_datum(d, v) \
        !            95:        do { (v) = ((d) >> 8) & 0xff; alpha_mb(); DELAY(5); } while (0)
        !            96: #define        scc_set_datum(d, v) \
        !            97:        do { (d) = (volatile unsigned int)(v) << 8; alpha_mb(); DELAY(5); } while (0)
        !            98:
        !            99: /* From <pmax/dev/pdma.h>. */
        !           100: struct pdma {
        !           101:        void    *p_addr;
        !           102:        char    *p_mem;
        !           103:        char    *p_end;
        !           104:        int     p_arg;
        !           105:        void    (*p_fcn)(struct tty *tp);
        !           106: };
        !           107:
        !           108: /*
        !           109:  * Minor device numbers for scc.  Weird because B channel comes first and
        !           110:  * the A channels are wired for keyboard/mouse and the B channels for the
        !           111:  * comm port(s).
        !           112:  */
        !           113: #define        SCCCOMM2_PORT   0x0
        !           114: #define        SCCMOUSE_PORT   0x1
        !           115: #define        SCCCOMM3_PORT   0x2
        !           116: #define        SCCKBD_PORT     0x3
        !           117:
        !           118: int    alpha_donot_kludge_scc;