📄 devtab.h
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#ifndef CYGONCE_IO_DEVTAB_H
#define CYGONCE_IO_DEVTAB_H
// ====================================================================
//
// devtab.h
//
// Device I/O Table
//
// ====================================================================
//####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####
//
// ====================================================================
// Private include file. This file should only be used by device
// drivers, not application code.
#include <pkgconf/system.h>
#include <cyg/io/io.h>
#include <cyg/hal/drv_api.h>
#include <cyg/hal/hal_tables.h>
// Set of functions which handle top level I/O functions
typedef struct {
Cyg_ErrNo (*write)(cyg_io_handle_t handle,
const void *buf,
cyg_uint32 *len);
Cyg_ErrNo (*read)(cyg_io_handle_t handle,
void *buf,
cyg_uint32 *len);
Cyg_ErrNo (*bwrite)(cyg_io_handle_t handle,
const void *buf,
cyg_uint32 *len,
cyg_uint32 pos);
Cyg_ErrNo (*bread)(cyg_io_handle_t handle,
void *buf,
cyg_uint32 *len,
cyg_uint32 pos);
cyg_bool (*select)(cyg_io_handle_t handle,
cyg_uint32 which,
CYG_ADDRWORD info);
Cyg_ErrNo (*get_config)(cyg_io_handle_t handle,
cyg_uint32 key,
void *buf,
cyg_uint32 *len);
Cyg_ErrNo (*set_config)(cyg_io_handle_t handle,
cyg_uint32 key,
const void *buf,
cyg_uint32 *len);
} cyg_devio_table_t;
// Default functions
__externC Cyg_ErrNo cyg_devio_cwrite(cyg_io_handle_t handle,
const void *buf, cyg_uint32 *len);
__externC Cyg_ErrNo cyg_devio_cread(cyg_io_handle_t handle,
void *buf, cyg_uint32 *len);
__externC Cyg_ErrNo cyg_devio_bwrite(cyg_io_handle_t handle,
const void *buf, cyg_uint32 *len,
cyg_uint32 pos);
__externC Cyg_ErrNo cyg_devio_bread(cyg_io_handle_t handle,
void *buf, cyg_uint32 *len,
cyg_uint32 pos);
__externC Cyg_ErrNo cyg_devio_select(cyg_io_handle_t handle,
cyg_uint32 which,
CYG_ADDRWORD info);
__externC Cyg_ErrNo cyg_devio_get_config(cyg_io_handle_t handle,
cyg_uint32 key,
void* buf,
cyg_uint32* len);
__externC Cyg_ErrNo cyg_devio_set_config(cyg_io_handle_t handle,
cyg_uint32 key,
void* buf,
cyg_uint32* len);
// Initialization macros
#define CHAR_DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) \cyg_devio_table_t _l = { \ _write, \ _read, \ cyg_devio_bwrite, \ cyg_devio_bread, \ _select, \ _get_config, \ _set_config, \};
#define BLOCK_DEVIO_TABLE(_l,_bwrite,_bread,_select,_get_config,_set_config) \cyg_devio_table_t _l = { \ cyg_devio_cwrite, \ cyg_devio_cread, \ _bwrite, \ _bread, \ _select, \ _get_config, \ _set_config, \};
#define DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) \ CHAR_DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config)
typedef struct cyg_devtab_entry {
const char *name;
const char *dep_name;
cyg_devio_table_t *handlers;
bool (*init)(struct cyg_devtab_entry *tab);
Cyg_ErrNo (*lookup)(struct cyg_devtab_entry **tab,
struct cyg_devtab_entry *sub_tab,
const char *name);
void *priv;
unsigned long status;
} CYG_HAL_TABLE_TYPE cyg_devtab_entry_t;
#define CYG_DEVTAB_STATUS_AVAIL 0x0001
#define CYG_DEVTAB_STATUS_CHAR 0x1000
#define CYG_DEVTAB_STATUS_BLOCK 0x2000
extern cyg_devtab_entry_t __DEVTAB__[], __DEVTAB_END__;
#define CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = { \ _name, \ _dep_name, \ _handlers, \ _init, \ _lookup, \ _priv, \ CYG_DEVTAB_STATUS_CHAR \};
#define BLOCK_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = { \ _name, \ _dep_name, \ _handlers, \ _init, \ _lookup, \ _priv, \ CYG_DEVTAB_STATUS_BLOCK \};
#define DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \ CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv)
#define DEVTAB_ENTRY_NO_INIT(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \cyg_devtab_entry_t _l = { \ _name, \ _dep_name, \ _handlers, \ _init, \ _lookup, \ _priv, \ CYG_DEVTAB_STATUS_CHAR \};
#endif // CYGONCE_IO_DEVTAB_H
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