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/cyreg.h

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    1 /*-
    2  * Copyright (c) 1995 Bruce Evans.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name of the author nor the names of contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/5.1/sys/i386/isa/cyreg.h 50477 1999-08-28 01:08:13Z peter $
   30  */
   31 
   32 /*
   33  * Definitions for Cyclades Cyclom-Y serial boards.
   34  */
   35 
   36 /*
   37  * Cyclades register offsets.  These are physical offsets for ISA boards
   38  * and physical offsets divided by 2 for PCI boards.
   39  */
   40 #define CY8_SVCACKR             0x100   /* (r) */
   41 #define CY8_SVCACKT             0x200   /* (r) */
   42 #define CY8_SVCACKM             0x300   /* (r) */
   43 #define CY16_RESET              0x1400  /* (r) */
   44 #define CY_CLEAR_INTR           0x1800  /* intr ack address (w) */
   45 
   46 #define CY_MAX_CD1400s          8       /* for Cyclom-32Y */
   47 
   48 #define CY_CLOCK(version)       ((version) >= 0x48 ? 60000000 : 25000000)
   49 #define CY_RTS_DTR_SWAPPED(version)     ((version) >= 0x48)
   50 
   51 /*
   52  * The `cd' macros are for access to cd1400 registers.  The `cy' macros
   53  * are for access to Cyclades registers.  Both sets of macros scale the
   54  * register number to get an offset, but the scales are different for
   55  * mostly historical reasons.
   56  */
   57 #ifdef CyDebug
   58 #define cd_inb(iobase, reg, cy_align) \
   59         (++cd_inbs, *((iobase) + (2 * (reg) << (cy_align))))
   60 #define cy_inb(iobase, reg, cy_align) \
   61         (++cy_inbs, *((iobase) + ((reg) << (cy_align))))
   62 #define cd_outb(iobase, reg, cy_align, val) \
   63         (++cd_outbs, (void)(*((iobase) + (2 * (reg) << (cy_align))) = (val)))
   64 #define cy_outb(iobase, reg, cy_align, val) \
   65         (++cy_outbs, (void)(*((iobase) + ((reg) << (cy_align))) = (val)))
   66 #else
   67 #define cd_inb(iobase, reg, cy_align) \
   68         (*((iobase) + (2 * (reg) << (cy_align))))
   69 #define cy_inb(iobase, reg, cy_align) \
   70         (*((iobase) + ((reg) << (cy_align))))
   71 #define cd_outb(iobase, reg, cy_align, val) \
   72         ((void)(*((iobase) + (2 * (reg) << (cy_align))) = (val)))
   73 #define cy_outb(iobase, reg, cy_align, val) \
   74         ((void)(*((iobase) + ((reg) << (cy_align))) = (val)))
   75 #endif

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