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      1  1.4  andvar /* $NetBSD: cfbreg.h,v 1.4 2022/06/03 17:04:54 andvar Exp $ */
      2  1.1     cgd 
      3  1.1     cgd /*
      4  1.1     cgd  * Copyright (c) 1996 Carnegie-Mellon University.
      5  1.1     cgd  * All rights reserved.
      6  1.1     cgd  *
      7  1.1     cgd  * Author: Chris G. Demetriou
      8  1.1     cgd  *
      9  1.1     cgd  * Permission to use, copy, modify and distribute this software and
     10  1.1     cgd  * its documentation is hereby granted, provided that both the copyright
     11  1.1     cgd  * notice and this permission notice appear in all copies of the
     12  1.1     cgd  * software, derivative works or modified versions, and any portions
     13  1.1     cgd  * thereof, and that both notices appear in supporting documentation.
     14  1.1     cgd  *
     15  1.1     cgd  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  1.1     cgd  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  1.1     cgd  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  1.1     cgd  *
     19  1.1     cgd  * Carnegie Mellon requests users of this software to return to
     20  1.1     cgd  *
     21  1.1     cgd  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  1.1     cgd  *  School of Computer Science
     23  1.1     cgd  *  Carnegie Mellon University
     24  1.1     cgd  *  Pittsburgh PA 15213-3890
     25  1.1     cgd  *
     26  1.1     cgd  * any improvements or extensions that they make and grant Carnegie the
     27  1.1     cgd  * rights to redistribute these changes.
     28  1.1     cgd  */
     29  1.1     cgd 
     30  1.1     cgd /*
     31  1.1     cgd  * Color Frame Buffer definitions, from:
     32  1.1     cgd  * ``PMAG-BA TURBOchannel Color Frame Buffer Functional Specification
     33  1.4  andvar  * (Revision 1.2)''.
     34  1.1     cgd  *
     35  1.3    flxd  * All definitions are in "dense" TURBOchannel space.
     36  1.1     cgd  */
     37  1.1     cgd 
     38  1.1     cgd /*
     39  1.1     cgd  * Size of the CFB address space.
     40  1.1     cgd  */
     41  1.1     cgd #define	CFB_SIZE		0x400000
     42  1.1     cgd 
     43  1.1     cgd /*
     44  1.1     cgd  * Offsets into slot space of each functional unit.
     45  1.1     cgd  */
     46  1.1     cgd #define	CFB_FB_OFFSET		0x000000	/* Frame buffer */
     47  1.1     cgd #define	CFB_FB_SIZE		0x100000
     48  1.1     cgd #define	CFB_RAMDAC_OFFSET	0x200000	/* Bt495 RAMDAC Registers */
     49  1.1     cgd #define	CFB_RAMDAC_SIZE		0x100000
     50  1.1     cgd #define	CFB_IREQCTRL_OFFSET	0x300000	/* IReq Control region */
     51  1.1     cgd #define	CFB_IREQCTRL_SIZE	0x080000
     52  1.1     cgd 
     53  1.1     cgd /*
     54  1.1     cgd  * Bt459 RAMDAC registers (offsets from CFB_RAMDAC_OFFSET)
     55  1.1     cgd  */
     56  1.1     cgd #define	CFB_RAMDAC_ADDRLOW	0x0000	/* Address register low byte */
     57  1.1     cgd #define	CFB_RAMDAC_ADDRHIGH	0x0004	/* Address register high byte */
     58  1.1     cgd #define	CFB_RAMDAC_REGDATA	0x0008	/* Register addressed by addr reg */
     59  1.1     cgd #define	CFB_RAMDAC_CMAPDATA	0x000c	/* Colormap loc addressed by addr reg */
     60