80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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ioaccess.h
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Abstract:
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This file contains the definitions to read and write IO registers.
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Author:
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Lluis Abello (lluis) 1-May-91
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Environment:
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Kernel mode
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Revision History:
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--*/
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#ifndef _IOACCESS
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#define _IOACCESS
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//
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// I/O space read and write macros.
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//
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#ifdef R4000
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#undef READ_REGISTER_UCHAR
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#undef READ_REGISTER_USHORT
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#undef READ_REGISTER_ULONG
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#undef WRITE_REGISTER_UCHAR
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#undef WRITE_REGISTER_USHORT
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#undef WRITE_REGISTER_ULONG
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// #define READ_REGISTER_UCHAR(x) NtReadByte(x)
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// #define READ_REGISTER_USHORT(x) NtReadShort(x)
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// #define READ_REGISTER_ULONG(x) NtReadLong(x)
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// #define WRITE_REGISTER_UCHAR(x, y) NtFlushByteBuffer(x,y)
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// #define WRITE_REGISTER_USHORT(x, y) NtFlushShortBuffer(x,y)
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// #define WRITE_REGISTER_ULONG(x, y) NtFlushLongBuffer(x,y)
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#define READ_REGISTER_UCHAR(x) *(volatile UCHAR * const)(x)
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#define READ_REGISTER_USHORT(x) *(volatile USHORT * const)(x)
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#define READ_REGISTER_ULONG(x) *(volatile ULONG * const)(x)
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#define WRITE_REGISTER_UCHAR(x, y) *(volatile UCHAR * const)(x) = y
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#define WRITE_REGISTER_USHORT(x, y) *(volatile USHORT * const)(x) = y
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#define WRITE_REGISTER_ULONG(x, y) *(volatile ULONG * const)(x) = y
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#endif //R4000
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#ifdef R3000
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#undef READ_REGISTER_UCHAR
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#undef READ_REGISTER_USHORT
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#undef READ_REGISTER_ULONG
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#undef WRITE_REGISTER_UCHAR
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#undef WRITE_REGISTER_USHORT
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#undef WRITE_REGISTER_ULONG
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#define READ_REGISTER_UCHAR(x) \
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*(volatile UCHAR * const)(x)
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#define READ_REGISTER_USHORT(x) \
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*(volatile USHORT * const)(x)
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#define READ_REGISTER_ULONG(x) \
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*(volatile ULONG * const)(x)
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#define WRITE_REGISTER_UCHAR(x, y) \
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*(volatile UCHAR * const)(x) = y; FlushWriteBuffer()
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#define WRITE_REGISTER_USHORT(x, y) \
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*(volatile USHORT * const)(x) = y; FlushWriteBuffer()
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#define WRITE_REGISTER_ULONG(x, y) \
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*(volatile ULONG * const)(x) = y; FlushWriteBuffer()
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#endif //R3000
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#endif //_IOACCESS
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