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[/] [ao486/] [trunk/] [syn/] [components/] [sd_card/] [firmware/] [bsp/] [HAL/] [inc/] [sys/] [alt_dev.h] - Blame information for rev 8

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1 8 alfik
#ifndef __ALT_DEV_H__
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#define __ALT_DEV_H__
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/******************************************************************************
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*                                                                             *
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* License Agreement                                                           *
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*                                                                             *
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* Copyright (c) 2004 Altera Corporation, San Jose, California, USA.           *
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* All rights reserved.                                                        *
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*                                                                             *
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* Permission is hereby granted, free of charge, to any person obtaining a     *
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* copy of this software and associated documentation files (the "Software"),  *
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* to deal in the Software without restriction, including without limitation   *
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,    *
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* and/or sell copies of the Software, and to permit persons to whom the       *
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* Software is furnished to do so, subject to the following conditions:        *
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*                                                                             *
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* The above copyright notice and this permission notice shall be included in  *
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* all copies or substantial portions of the Software.                         *
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*                                                                             *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  *
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      *
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING     *
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER         *
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* DEALINGS IN THE SOFTWARE.                                                   *
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*                                                                             *
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* This agreement shall be governed in all respects by the laws of the State   *
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* of California and by the laws of the United States of America.              *
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*                                                                             *
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* Altera does not recommend, suggest or require that this reference design    *
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* file be used in conjunction or combination with any other product.          *
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******************************************************************************/
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/******************************************************************************
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*                                                                             *
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* THIS IS A LIBRARY READ-ONLY SOURCE FILE. DO NOT EDIT.                       *
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*                                                                             *
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******************************************************************************/
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#include "system.h"
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#include "sys/alt_llist.h"
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#include "priv/alt_dev_llist.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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/*
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 * The value ALT_IRQ_NOT_CONNECTED is used to represent an unconnected
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 * interrupt line. It cannot evaluate to a valid interrupt number.
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 */
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#define ALT_IRQ_NOT_CONNECTED (-1)
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typedef struct alt_dev_s alt_dev;
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struct stat;
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/*
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 * The file descriptor structure definition.
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 */
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typedef struct alt_fd_s
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{
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  alt_dev* dev;
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  alt_u8*  priv;
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  int      fd_flags;
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} alt_fd;
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/*
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 * The device structure definition.
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 */
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struct alt_dev_s {
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  alt_llist    llist;     /* for internal use */
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  const char*  name;
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  int (*open)  (alt_fd* fd, const char* name, int flags, int mode);
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  int (*close) (alt_fd* fd);
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  int (*read)  (alt_fd* fd, char* ptr, int len);
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  int (*write) (alt_fd* fd, const char* ptr, int len);
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  int (*lseek) (alt_fd* fd, int ptr, int dir);
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  int (*fstat) (alt_fd* fd, struct stat* buf);
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  int (*ioctl) (alt_fd* fd, int req, void* arg);
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};
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/*
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 * Functions used to register device for access through the C standard
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 * library.
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 *
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 * The only difference between alt_dev_reg() and alt_fs_reg() is the
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 * interpretation that open() places on the device name. In the case of
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 * alt_dev_reg the device is assumed to be a particular character device,
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 * and so there must be an exact match in the name for open to succeed.
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 * In the case of alt_fs_reg() the name of the device is treated as the
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 * mount point for a directory, and so any call to open() where the name
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 * is the root of the device filename will succeed.
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 */
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extern int alt_fs_reg  (alt_dev* dev);
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static ALT_INLINE int alt_dev_reg (alt_dev* dev)
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{
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  extern alt_llist alt_dev_list;
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  return alt_dev_llist_insert ((alt_dev_llist*) dev, &alt_dev_list);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ALT_DEV_H__ */

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