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Diffstat (limited to 'sys/x86/isa/isa.h')
| -rw-r--r-- | sys/x86/isa/isa.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/sys/x86/isa/isa.h b/sys/x86/isa/isa.h new file mode 100644 index 0000000..78bd956 --- /dev/null +++ b/sys/x86/isa/isa.h @@ -0,0 +1,102 @@ +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from: @(#)isa.h 5.7 (Berkeley) 5/9/91 + * $FreeBSD$ + */ + +#ifdef PC98 +#error isa.h is included from PC-9801 source +#endif + +#ifndef _X86_ISA_ISA_H_ +#define _X86_ISA_ISA_H_ + +/* BEWARE: Included in both assembler and C code */ + +/* + * ISA Bus conventions + */ + +/* + * Input / Output Port Assignments + */ +#ifndef IO_ISABEGIN +#define IO_ISABEGIN 0x000 /* 0x000 - Beginning of I/O Registers */ + + /* CPU Board */ +#define IO_ICU1 0x020 /* 8259A Interrupt Controller #1 */ +#define IO_PMP1 0x026 /* 82347 Power Management Peripheral */ +#define IO_KBD 0x060 /* 8042 Keyboard */ +#define IO_RTC 0x070 /* RTC */ +#define IO_NMI IO_RTC /* NMI Control */ +#define IO_ICU2 0x0A0 /* 8259A Interrupt Controller #2 */ + + /* Cards */ +#define IO_VGA 0x3C0 /* E/VGA Ports */ +#define IO_CGA 0x3D0 /* CGA Ports */ +#define IO_MDA 0x3B0 /* Monochome Adapter */ + +#define IO_ISAEND 0x3FF /* End (actually Max) of I/O Regs */ +#endif /* !IO_ISABEGIN */ + +/* + * Input / Output Port Sizes - these are from several sources, and tend + * to be the larger of what was found. + */ +#ifndef IO_ISASIZES +#define IO_ISASIZES + +#define IO_CGASIZE 12 /* CGA controllers */ +#define IO_MDASIZE 12 /* Monochrome display controllers */ +#define IO_VGASIZE 16 /* VGA controllers */ + +#endif /* !IO_ISASIZES */ + +/* + * Input / Output Memory Physical Addresses + */ +#ifndef IOM_BEGIN +#define IOM_BEGIN 0x0A0000 /* Start of I/O Memory "hole" */ +#define IOM_END 0x100000 /* End of I/O Memory "hole" */ +#define IOM_SIZE (IOM_END - IOM_BEGIN) +#endif /* !IOM_BEGIN */ + +/* + * RAM Physical Address Space (ignoring the above mentioned "hole") + */ +#ifndef RAM_BEGIN +#define RAM_BEGIN 0x0000000 /* Start of RAM Memory */ +#define RAM_END 0x1000000 /* End of RAM Memory */ +#define RAM_SIZE (RAM_END - RAM_BEGIN) +#endif /* !RAM_BEGIN */ + +#endif /* !_X86_ISA_ISA_H_ */ |
