You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.5 KiB
54 lines
1.5 KiB
/*++
|
|
|
|
Copyright (c) 1989-1995 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
ioaccess.h
|
|
|
|
Abstract:
|
|
|
|
Definitions of function prototypes for accessing I/O ports and
|
|
memory on I/O adapters from display drivers.
|
|
|
|
Cloned from parts of nti386.h.
|
|
|
|
Author:
|
|
|
|
|
|
--*/
|
|
|
|
|
|
//
|
|
// Memory barriers on AMD64, X86 and IA64 are not required since the Io
|
|
// Operations are always garanteed to be executed in order
|
|
//
|
|
|
|
#if defined(_AMD64_) || defined(_X86_) || defined(_IA64_)
|
|
|
|
#define MEMORY_BARRIER() 0
|
|
|
|
#else
|
|
#error "No Target Architecture"
|
|
#endif
|
|
|
|
//
|
|
// I/O space read and write macros.
|
|
//
|
|
|
|
#if defined(_X86_)
|
|
|
|
#define READ_REGISTER_UCHAR(Register) (*(volatile UCHAR *)(Register))
|
|
#define READ_REGISTER_USHORT(Register) (*(volatile USHORT *)(Register))
|
|
#define READ_REGISTER_ULONG(Register) (*(volatile ULONG *)(Register))
|
|
#define WRITE_REGISTER_UCHAR(Register, Value) (*(volatile UCHAR *)(Register) = (Value))
|
|
#define WRITE_REGISTER_USHORT(Register, Value) (*(volatile USHORT *)(Register) = (Value))
|
|
#define WRITE_REGISTER_ULONG(Register, Value) (*(volatile ULONG *)(Register) = (Value))
|
|
#define READ_PORT_UCHAR(Port) inp (Port)
|
|
#define READ_PORT_USHORT(Port) inpw (Port)
|
|
#define READ_PORT_ULONG(Port) inpd (Port)
|
|
#define WRITE_PORT_UCHAR(Port, Value) outp ((Port), (Value))
|
|
#define WRITE_PORT_USHORT(Port, Value) outpw ((Port), (Value))
|
|
#define WRITE_PORT_ULONG(Port, Value) outpd ((Port), (Value))
|
|
|
|
#endif
|