sys/dev/video/gsc/gscreg.h

   1 /* gscreg.h - port and bit definitions for the Genius GS-4500 interface
   2  *
   3  *
   4  * Copyright (c) 1995 Gunther Schadow.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Gunther Schadow.
  17  * 4. The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  * $FreeBSD: src/sys/i386/isa/gscreg.h,v 1.2.16.1 2000/08/03 01:01:20 peter Exp $
  32  * $DragonFly: src/sys/dev/video/gsc/gscreg.h,v 1.2 2003/06/17 04:28:37 dillon Exp $
  33  */
  34
  35 /*
  36  * status register (r)
  37  */
  38
  39 /* the DMA/IRQ jumper configuration */
  40
  41 #define GSC_CNF_MASK  0x5a
  42
  43 #define GSC_CNF_DMA1 (~0x02 & GSC_CNF_MASK)
  44 #define GSC_CNF_DMA3 (~0x08 & GSC_CNF_MASK)
  45 #define GSC_CNF_IRQ3 (~0x10 & GSC_CNF_MASK)
  46 #define GSC_CNF_IRQ5 (~0x40 & GSC_CNF_MASK)
  47
  48 /* the resolution switch setting */
  49
  50 #define GSC_RES_MASK  0x24
  51
  52 #define GSC_RES_400   0x00
  53 #define GSC_RES_300   0x04
  54 #define GSC_RES_200   0x20
  55 #define GSC_RES_100   0x24
  56
  57 /* other flags */
  58
  59 #define GSC_RDY_FLAG  0x80
  60
  61 #define GSC_IRQ_FLAG  0x01
  62
  63 /*
  64  * control register (w)
  65  */
  66
  67 /* power on */
  68
  69 #define GSC_POWER_ON  0x01
  70
  71 /* pixel per line count */
  72
  73 #define GSC_CNT_MASK  0xf0
  74
  75 #define GSC_CNT_3648  0x30
  76 #define GSC_CNT_2544  0x90
  77 #define GSC_CNT_1696  0xb0
  78 #define GSC_CNT_1648  0xe0
  79 #define GSC_CNT_1264  0x80
  80 #define GSC_CNT_840   0xa0
  81 #define GSC_CNT_424   0xf0
  82
  83 /*
  84  * port addresses
  85  */
  86
  87 #define GSC_DATA(iob) (iob + (iob == 0x270 ? 0x02 : 0x01))
  88 #define GSC_STAT(iob) (iob + (iob == 0x270 ? 0x03 : 0x02))
  89 #define GSC_CTRL(iob) (iob + (iob == 0x270 ? 0x0a : 0x03))
  90 #define GSC_CLRP(iob) (iob + (iob == 0x270 ? 0x0b : 0x04))