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Annotation of sys/arch/sparc/dev/bwtworeg.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: bwtworeg.h,v 1.4 2003/06/02 23:27:53 millert Exp $    */
                      2: /*     $NetBSD: bwtworeg.h,v 1.3 1996/02/27 00:32:39 pk Exp $ */
                      3:
                      4: /*
                      5:  * Copyright (c) 1992, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This software was developed by the Computer Systems Engineering group
                      9:  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
                     10:  * contributed to Berkeley.
                     11:  *
                     12:  * All advertising materials mentioning features or use of this software
                     13:  * must display the following acknowledgement:
                     14:  *     This product includes software developed by the University of
                     15:  *     California, Lawrence Berkeley Laboratory.
                     16:  *
                     17:  * Redistribution and use in source and binary forms, with or without
                     18:  * modification, are permitted provided that the following conditions
                     19:  * are met:
                     20:  * 1. Redistributions of source code must retain the above copyright
                     21:  *    notice, this list of conditions and the following disclaimer.
                     22:  * 2. Redistributions in binary form must reproduce the above copyright
                     23:  *    notice, this list of conditions and the following disclaimer in the
                     24:  *    documentation and/or other materials provided with the distribution.
                     25:  * 3. Neither the name of the University nor the names of its contributors
                     26:  *    may be used to endorse or promote products derived from this software
                     27:  *    without specific prior written permission.
                     28:  *
                     29:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     30:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     31:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     32:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     33:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     34:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     35:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     36:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     37:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     38:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     39:  * SUCH DAMAGE.
                     40:  *
                     41:  *     @(#)bwtworeg.h  8.1 (Berkeley) 6/11/93
                     42:  */
                     43:
                     44: /*
                     45:  * bwtwo display registers.
                     46:  *
                     47:  * The registers start at offset 0x400000 and repeat every 32 bytes
                     48:  * (presumably only the low order address lines are decoded).  Video RAM
                     49:  * starts at offset 0x800000.  We use separate pointers to each so that
                     50:  * the sparc addressing modes work well.
                     51:  */
                     52: struct bwtworeg {
                     53:        struct fbcontrol bw_fbc;
                     54: };
                     55:
                     56: /* offsets */
                     57: #define        BWREG_ID        0
                     58: #define        BWREG_REG       0x400000
                     59: #define        BWREG_MEM       0x800000
                     60:
                     61: /* same, but for gdb */
                     62: struct bwtwo_all {
                     63:        long    ba_id;                  /* ID = 0xfe010104 on my IPC */
                     64:        char    ba_xxx0[0x400000-4];
                     65:        struct  fbcontrol ba_reg;       /* control registers */
                     66:        char    ba_xxx1[0x400000-32];
                     67:        char    ba_ram[4096];           /* actually larger */
                     68: };