| /* |
| * 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 __cplusplus |
| extern "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_) |
| |
| #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 */ |