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cg4reg.h revision 1.4 
      1 /*	$NetBSD: cg4reg.h,v 1.4 1998/02/08 05:20:08 gwr 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. All advertising materials mentioning features or use of this software
     25  *    must display the following acknowledgement:
     26  *	This product includes software developed by the University of
     27  *	California, Berkeley and its contributors.
     28  * 4. Neither the name of the University nor the names of its contributors
     29  *    may be used to endorse or promote products derived from this software
     30  *    without specific prior written permission.
     31  *
     32  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     33  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     34  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     35  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     36  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     40  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     41  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     42  * SUCH DAMAGE.
     43  *
     44  *	@(#)cgthreereg.h	8.2 (Berkeley) 10/30/93
     45  */
     46 
     47 /*
     48  * Size that can be mapped (user-level mmap).
     49  */
     50 #define	CG4_OVERLAY_SIZE	 0x20000	/* size of overlay plane */
     51 #define	CG4_ENABLE_SIZE 	 0x20000	/* size of enable plane */
     52 #define	CG4_PIXMAP_SIZE		0x100000	/* size of frame buffer */
     53 
     54 /* number of colormap entries */
     55 #define CG4_CMAP_ENTRIES	256
     56 
     57 /*
     58  * There are two kinds of cg4 hardware:
     59  * "Type A" has a AMD DACs (Digital-to-Analog Converters)
     60  * "Type B" has a Brooktree DACs.  H/W addresses differ too.
     61  */
     62 
     63 /*
     64  * Memory layout of the Type A hardware (OBMEM)
     65  */
     66 #define CG4A_DEF_BASE   0xFE400000	/* Sun3/110 */
     67 #define CG4A_OFF_ENABLE     0
     68 #define CG4A_OFF_PIXMAP	  0x400000
     69 #define CG4A_OFF_OVERLAY  0xC00000
     70 #define CG4A_OBIO_CMAP	  0x0E0000	/* OBIO space! */
     71 
     72 /* colormap/status register structure */
     73 struct amd_regs {
     74 	u_char r[CG4_CMAP_ENTRIES];
     75 	u_char g[CG4_CMAP_ENTRIES];
     76 	u_char b[CG4_CMAP_ENTRIES];
     77 	u_char status;
     78 #define CG4A_STATUS_FIRSTHALF	0x80
     79 #define CG4A_STATUS_TOOLATE	0x40
     80 };
     81 
     82 
     83 /*
     84  * Memory layout of the Type B hardware (OBMEM)
     85  * P4 appears on the Sun3/60 at 0xFF300000, so
     86  * define things relative to that.
     87  */
     88 #define CG4B_DEF_BASE  0xFF300000	/* Sun3/60 */
     89 #define CG4B_OFF_CMAP  (-0x100000)
     90 #define CG4B_OFF_OVERLAY 0x100000
     91 #define CG4B_OFF_ENABLE  0x300000
     92 #define CG4B_OFF_PIXMAP  0x500000
     93 
     94