#ifndef CYGONCE_IO_H#define CYGONCE_IO_H// ====================================================================////      io.h////      Device I/O //// ====================================================================//####ECOSGPLCOPYRIGHTBEGIN####// -------------------------------------------// This file is part of eCos, the Embedded Configurable Operating System.// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.//// eCos is free software; you can redistribute it and/or modify it under// the terms of the GNU General Public License as published by the Free// Software Foundation; either version 2 or (at your option) any later version.//// eCos is distributed in the hope that it will be useful, but WITHOUT ANY// WARRANTY; without even the implied warranty of MERCHANTABILITY or// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License// for more details.//// You should have received a copy of the GNU General Public License along// with eCos; if not, write to the Free Software Foundation, Inc.,// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.//// As a special exception, if other files instantiate templates or use macros// or inline functions from this file, or you compile this file and link it// with other works to produce a work based on this file, this file does not// by itself cause the resulting work to be covered by the GNU General Public// License. However the source code for this file must still be made available// in accordance with section (3) of the GNU General Public License.//// This exception does not invalidate any other reasons why a work based on// this file might be covered by the GNU General Public License.//// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.// at http://sources.redhat.com/ecos/ecos-license/// -------------------------------------------//####ECOSGPLCOPYRIGHTEND####// ====================================================================//#####DESCRIPTIONBEGIN####//// Author(s):   gthomas// Contributors:        gthomas// Date:        1999-02-04// Purpose:     Describe low level I/O interfaces.// Description:////####DESCRIPTIONEND####//// ====================================================================// This file contains the user-level visible I/O interfaces//#include <pkgconf/system.h>//#include <pkgconf/hal.h>#include "cyg_type.h"#ifdef CYGPKG_ERROR#include "codes.h"#else//#error I/O subsystem requires 'error' package#endif typedef int Cyg_ErrNo;#ifdef __cplusplusextern "C" {#endiftypedef void *cyg_io_handle_t;// Lookup a device and return it's handleCyg_ErrNo cyg_io_lookup(const char *name,                         cyg_io_handle_t *handle);// Write data to a deviceCyg_ErrNo cyg_io_write(cyg_io_handle_t handle,                        const void *buf,                        cyg_uint32 *len);// Read data from a deviceCyg_ErrNo cyg_io_read(cyg_io_handle_t handle,                       void *buf,                       cyg_uint32 *len);// Write data to a block deviceCyg_ErrNo cyg_io_bwrite(cyg_io_handle_t handle,                        const void *buf,                        cyg_uint32 *len,                       cyg_uint32 pos);// Read data from a block deviceCyg_ErrNo cyg_io_bread(cyg_io_handle_t handle,                       void *buf,                       cyg_uint32 *len,                      cyg_uint32 pos);// Get the configuration of a deviceCyg_ErrNo cyg_io_get_config(cyg_io_handle_t handle,                             cyg_uint32 key,                            void *buf,                             cyg_uint32 *len);// Change the configuration of a deviceCyg_ErrNo cyg_io_set_config(cyg_io_handle_t handle,                             cyg_uint32 key,                            const void *buf,                             cyg_uint32 *len);// Test a device for readiness    cyg_bool cyg_io_select(cyg_io_handle_t handle,                       cyg_uint32 which,                       CYG_ADDRWORD info);#ifdef __cplusplus}#endif#endif  /* CYGONCE_IO_H *//* EOF io.h */