The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/gscreg.h

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    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: releng/5.0/sys/i386/isa/gscreg.h 59874 2000-05-01 20:32:07Z peter $
   32  */
   33 
   34 /*
   35  * status register (r)
   36  */
   37 
   38 /* the DMA/IRQ jumper configuration */
   39 
   40 #define GSC_CNF_MASK  0x5a
   41 
   42 #define GSC_CNF_DMA1 (~0x02 & GSC_CNF_MASK)
   43 #define GSC_CNF_DMA3 (~0x08 & GSC_CNF_MASK)
   44 #define GSC_CNF_IRQ3 (~0x10 & GSC_CNF_MASK)
   45 #define GSC_CNF_IRQ5 (~0x40 & GSC_CNF_MASK)
   46 
   47 /* the resolution switch setting */
   48 
   49 #define GSC_RES_MASK  0x24
   50 
   51 #define GSC_RES_400   0x00
   52 #define GSC_RES_300   0x04
   53 #define GSC_RES_200   0x20
   54 #define GSC_RES_100   0x24
   55 
   56 /* other flags */
   57 
   58 #define GSC_RDY_FLAG  0x80
   59 
   60 #define GSC_IRQ_FLAG  0x01
   61 
   62 /*
   63  * control register (w)
   64  */
   65 
   66 /* power on */
   67 
   68 #define GSC_POWER_ON  0x01
   69 
   70 /* pixel per line count */
   71 
   72 #define GSC_CNT_MASK  0xf0
   73 
   74 #define GSC_CNT_3648  0x30
   75 #define GSC_CNT_2544  0x90
   76 #define GSC_CNT_1696  0xb0
   77 #define GSC_CNT_1648  0xe0
   78 #define GSC_CNT_1264  0x80
   79 #define GSC_CNT_840   0xa0
   80 #define GSC_CNT_424   0xf0
   81 
   82 /*
   83  * port addresses
   84  */
   85 
   86 #define GSC_DATA(iob) (iob + (iob == 0x270 ? 0x02 : 0x01))
   87 #define GSC_STAT(iob) (iob + (iob == 0x270 ? 0x03 : 0x02))
   88 #define GSC_CTRL(iob) (iob + (iob == 0x270 ? 0x0a : 0x03))
   89 #define GSC_CLRP(iob) (iob + (iob == 0x270 ? 0x0b : 0x04))

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