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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374/* * ioaccess.h * * Windows Device Driver Kit * * This file is part of the w32api package. * * THIS SOFTWARE IS NOT COPYRIGHTED * * This source code is offered for use in the public domain. You may * use, modify or distribute it freely. * * This code is distributed in the hope that it will be useful but * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY * DISCLAIMED. This includes but is not limited to warranties of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * */#ifndef __IOACCESS_H#define __IOACCESS_H
#ifdef __cplusplusextern "C" {#endif
#define H2I(p) PtrToUshort(p)
#ifndef NO_PORT_MACROS
#if defined(_X86_) || defined(_M_AMD64)#define READ_REGISTER_UCHAR(r) (*(volatile UCHAR *)(r))#define READ_REGISTER_USHORT(r) (*(volatile USHORT *)(r))#define READ_REGISTER_ULONG(r) (*(volatile ULONG *)(r))#define WRITE_REGISTER_UCHAR(r, v) (*(volatile UCHAR *)(r) = (v))#define WRITE_REGISTER_USHORT(r, v) (*(volatile USHORT *)(r) = (v))#define WRITE_REGISTER_ULONG(r, v) (*(volatile ULONG *)(r) = (v))#define READ_PORT_UCHAR(p) (UCHAR)(__inbyte (H2I(p)))#define READ_PORT_USHORT(p) (USHORT)(__inword (H2I(p)))#define READ_PORT_ULONG(p) (ULONG)(__indword (H2I(p)))#define WRITE_PORT_UCHAR(p, v) __outbyte (H2I(p), (v))#define WRITE_PORT_USHORT(p, v) __outword (H2I(p), (v))#define WRITE_PORT_ULONG(p, v) __outdword (H2I(p), (v))
#define MEMORY_BARRIER()
#elif defined(_PPC_) || defined(_MIPS_) || defined(_ARM_) || defined(_ARM64_)
#define READ_REGISTER_UCHAR(r) (*(volatile UCHAR * const)(r))#define READ_REGISTER_USHORT(r) (*(volatile USHORT * const)(r))#define READ_REGISTER_ULONG(r) (*(volatile ULONG * const)(r))#define WRITE_REGISTER_UCHAR(r, v) (*(volatile UCHAR * const)(r) = (v))#define WRITE_REGISTER_USHORT(r, v) (*(volatile USHORT * const)(r) = (v))#define WRITE_REGISTER_ULONG(r, v) (*(volatile ULONG * const)(r) = (v))#define READ_PORT_UCHAR(r) READ_REGISTER_UCHAR(r)#define READ_PORT_USHORT(r) READ_REGISTER_USHORT(r)#define READ_PORT_ULONG(r) READ_REGISTER_ULONG(r)#define WRITE_PORT_UCHAR(p, v) WRITE_REGISTER_UCHAR(p, (UCHAR) (v))#define WRITE_PORT_USHORT(p, v) WRITE_REGISTER_USHORT(p, (USHORT) (v))#define WRITE_PORT_ULONG(p, v) WRITE_REGISTER_ULONG(p, (ULONG) (v))
#else
#error Unsupported architecture
#endif
#endif /* NO_PORT_MACROS */
#ifdef __cplusplus}#endif
#endif /* __IOACCESS_H */