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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [io/] [common/] [current/] [include/] [devtab.h] - Rev 825
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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 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#### // // ==================================================================== // 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, // in blocks cyg_uint32 pos); // in blocks Cyg_ErrNo (*bread)(cyg_io_handle_t handle, void *buf, cyg_uint32 *len, // in blocks cyg_uint32 pos); // in blocks 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, \ }; // Note: _bwrite and _bread pass len and pos in terms of blocks, not // bytes. #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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