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/* |
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* ioaccess.h |
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* |
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* Windows Device Driver Kit |
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* |
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* This file is part of the w32api package. |
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* |
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* THIS SOFTWARE IS NOT COPYRIGHTED |
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* |
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* This source code is offered for use in the public domain. You may |
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* use, modify or distribute it freely. |
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* |
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* This code is distributed in the hope that it will be useful but |
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* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY |
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* DISCLAIMED. This includes but is not limited to warranties of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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* |
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*/ |
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#ifndef __IOACCESS_H |
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#define __IOACCESS_H |
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|
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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|
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#define H2I(p) PtrToUshort(p) |
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|
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#ifndef NO_PORT_MACROS |
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|
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#if defined(_X86_) || defined(_M_AMD64) |
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#define READ_REGISTER_UCHAR(r) (*(volatile UCHAR *)(r)) |
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#define READ_REGISTER_USHORT(r) (*(volatile USHORT *)(r)) |
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#define READ_REGISTER_ULONG(r) (*(volatile ULONG *)(r)) |
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#define WRITE_REGISTER_UCHAR(r, v) (*(volatile UCHAR *)(r) = (v)) |
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#define WRITE_REGISTER_USHORT(r, v) (*(volatile USHORT *)(r) = (v)) |
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#define WRITE_REGISTER_ULONG(r, v) (*(volatile ULONG *)(r) = (v)) |
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#define READ_PORT_UCHAR(p) (UCHAR)(__inbyte (H2I(p))) |
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#define READ_PORT_USHORT(p) (USHORT)(__inword (H2I(p))) |
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#define READ_PORT_ULONG(p) (ULONG)(__indword (H2I(p))) |
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#define WRITE_PORT_UCHAR(p, v) __outbyte (H2I(p), (v)) |
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#define WRITE_PORT_USHORT(p, v) __outword (H2I(p), (v)) |
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#define WRITE_PORT_ULONG(p, v) __outdword (H2I(p), (v)) |
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|
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#define MEMORY_BARRIER() |
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|
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#elif defined(_PPC_) || defined(_MIPS_) || defined(_ARM_) |
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|
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#define READ_REGISTER_UCHAR(r) (*(volatile UCHAR * const)(r)) |
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#define READ_REGISTER_USHORT(r) (*(volatile USHORT * const)(r)) |
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#define READ_REGISTER_ULONG(r) (*(volatile ULONG * const)(r)) |
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#define WRITE_REGISTER_UCHAR(r, v) (*(volatile UCHAR * const)(r) = (v)) |
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#define WRITE_REGISTER_USHORT(r, v) (*(volatile USHORT * const)(r) = (v)) |
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#define WRITE_REGISTER_ULONG(r, v) (*(volatile ULONG * const)(r) = (v)) |
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#define READ_PORT_UCHAR(r) READ_REGISTER_UCHAR(r) |
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#define READ_PORT_USHORT(r) READ_REGISTER_USHORT(r) |
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#define READ_PORT_ULONG(r) READ_REGISTER_ULONG(r) |
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#define WRITE_PORT_UCHAR(p, v) WRITE_REGISTER_UCHAR(p, (UCHAR) (v)) |
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#define WRITE_PORT_USHORT(p, v) WRITE_REGISTER_USHORT(p, (USHORT) (v)) |
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#define WRITE_PORT_ULONG(p, v) WRITE_REGISTER_ULONG(p, (ULONG) (v)) |
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|
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#else |
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|
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#error Unsupported architecture |
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|
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#endif |
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|
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#endif /* NO_PORT_MACROS */ |
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|
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#ifdef __cplusplus |
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} |
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#endif |
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|
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#endif /* __IOACCESS_H */ |
