sys/arch/sun3/dev/cg4reg.h

   1 /*      $NetBSD: cg4reg.h,v 1.5.48.3 2004/09/21 13:23:19 skrll Exp $    */
   2
   3 /*
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This software was developed by the Computer Systems Engineering group
   8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
   9  * contributed to Berkeley.
  10  *
  11  * All advertising materials mentioning features or use of this software
  12  * must display the following acknowledgement:
  13  *      This product includes software developed by the University of
  14  *      California, Lawrence Berkeley Laboratory.
  15  *
  16  * Redistribution and use in source and binary forms, with or without
  17  * modification, are permitted provided that the following conditions
  18  * are met:
  19  * 1. Redistributions of source code must retain the above copyright
  20  *    notice, this list of conditions and the following disclaimer.
  21  * 2. Redistributions in binary form must reproduce the above copyright
  22  *    notice, this list of conditions and the following disclaimer in the
  23  *    documentation and/or other materials provided with the distribution.
  24  * 3. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  *      @(#)cgthreereg.h        8.2 (Berkeley) 10/30/93
  41  */
  42
  43 /*
  44  * Size that can be mapped (user-level mmap).
  45  */
  46 #define CG4_OVERLAY_SIZE         0x20000        /* size of overlay plane */
  47 #define CG4_ENABLE_SIZE          0x20000        /* size of enable plane */
  48 #define CG4_PIXMAP_SIZE         0x100000        /* size of frame buffer */
  49
  50 /* number of colormap entries */
  51 #define CG4_CMAP_ENTRIES        256
  52
  53 /*
  54  * There are two kinds of cg4 hardware:
  55  * "Type A" has a AMD DACs (Digital-to-Analog Converters)
  56  * "Type B" has a Brooktree DACs.  H/W addresses differ too.
  57  */
  58
  59 /*
  60  * Memory layout of the Type A hardware (OBMEM)
  61  */
  62 #define CG4A_OFF_ENABLE     0
  63 #define CG4A_OFF_PIXMAP   0x400000
  64 #define CG4A_OFF_OVERLAY  0xC00000
  65 #define CG4A_OBIO_CMAP    0x0E0000      /* OBIO space! */
  66
  67 /* colormap/status register structure */
  68 struct amd_regs {
  69         u_char r[CG4_CMAP_ENTRIES];
  70         u_char g[CG4_CMAP_ENTRIES];
  71         u_char b[CG4_CMAP_ENTRIES];
  72         u_char status;
  73 #define CG4A_STATUS_FIRSTHALF   0x80
  74 #define CG4A_STATUS_TOOLATE     0x40
  75 };
  76
  77
  78 /*
  79  * Memory layout of the Type B hardware (OBMEM)
  80  * P4 appears on the Sun3/60 at 0xFF300000, so
  81  * define things relative to that.
  82  */
  83 #define CG4B_OFF_CMAP  (-0x100000)
  84 #define CG4B_OFF_OVERLAY 0x100000
  85 #define CG4B_OFF_ENABLE  0x300000
  86 #define CG4B_OFF_PIXMAP  0x500000
  87