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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [io/] [common/] [current/] [include/] [io.h] - Rev 825
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#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 Free Software Foundation, 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., // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 v2. // // This exception does not invalidate any other reasons why a work based // on this file might be covered by the GNU General Public 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/infra/cyg_type.h> #ifdef CYGPKG_ERROR #include <cyg/error/codes.h> #else #error I/O subsystem requires 'error' package #endif // typedef int Cyg_ErrNo; #ifdef __cplusplus extern "C" { #endif typedef void *cyg_io_handle_t; // Lookup a device and return it's handle Cyg_ErrNo cyg_io_lookup(const char *name, cyg_io_handle_t *handle); // Write data to a device Cyg_ErrNo cyg_io_write(cyg_io_handle_t handle, const void *buf, cyg_uint32 *len); // Read data from a device Cyg_ErrNo cyg_io_read(cyg_io_handle_t handle, void *buf, cyg_uint32 *len); // Write data to a block device Cyg_ErrNo cyg_io_bwrite(cyg_io_handle_t handle, const void *buf, cyg_uint32 *len, cyg_uint32 pos); // Read data from a block device Cyg_ErrNo cyg_io_bread(cyg_io_handle_t handle, void *buf, cyg_uint32 *len, cyg_uint32 pos); // Get the configuration of a device Cyg_ErrNo cyg_io_get_config(cyg_io_handle_t handle, cyg_uint32 key, void *buf, cyg_uint32 *len); // Change the configuration of a device Cyg_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 */
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