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#ifndef __ALT_DEV_H__

#define __ALT_DEV_H__

/******************************************************************************

*                                                                             *

* License Agreement                                                           *

*                                                                             *

* Copyright (c) 2004 Altera Corporation, San Jose, California, USA.           *

* All rights reserved.                                                        *

*                                                                             *

* Permission is hereby granted, free of charge, to any person obtaining a     *

* copy of this software and associated documentation files (the "Software"),  *

* to deal in the Software without restriction, including without limitation   *

* the rights to use, copy, modify, merge, publish, distribute, sublicense,    *

* and/or sell copies of the Software, and to permit persons to whom the       *

* Software is furnished to do so, subject to the following conditions:        *

*                                                                             *

* The above copyright notice and this permission notice shall be included in  *

* all copies or substantial portions of the Software.                         *

*                                                                             *

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  *

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    *

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      *

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING     *

* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER         *

* DEALINGS IN THE SOFTWARE.                                                   *

*                                                                             *

* This agreement shall be governed in all respects by the laws of the State   *

* of California and by the laws of the United States of America.              *

*                                                                             *

* Altera does not recommend, suggest or require that this reference design    *

* file be used in conjunction or combination with any other product.          *

******************************************************************************/

/******************************************************************************

*                                                                             *

* THIS IS A LIBRARY READ-ONLY SOURCE FILE. DO NOT EDIT.                       *

*                                                                             *

******************************************************************************/

#include "system.h"

#include "sys/alt_llist.h"

#include "priv/alt_dev_llist.h"

#ifdef __cplusplus

extern "C"

{

#endif /* __cplusplus */

/*

 * The value ALT_IRQ_NOT_CONNECTED is used to represent an unconnected

 * interrupt line. It cannot evaluate to a valid interrupt number.

 */

#define ALT_IRQ_NOT_CONNECTED (-1)

typedef struct alt_dev_s alt_dev;

struct stat;

/*

 * The file descriptor structure definition.

 */

typedef struct alt_fd_s

{

  alt_dev* dev;

  alt_u8*  priv;

  int      fd_flags;

} alt_fd;

/*

 * The device structure definition.

 */

struct alt_dev_s {

  alt_llist    llist;     /* for internal use */

  const char*  name;

  int (*open)  (alt_fd* fd, const char* name, int flags, int mode);

  int (*close) (alt_fd* fd);

  int (*read)  (alt_fd* fd, char* ptr, int len);

  int (*write) (alt_fd* fd, const char* ptr, int len);

  int (*lseek) (alt_fd* fd, int ptr, int dir);

  int (*fstat) (alt_fd* fd, struct stat* buf);

  int (*ioctl) (alt_fd* fd, int req, void* arg);

};

/*

 * Functions used to register device for access through the C standard

 * library.

 *

 * The only difference between alt_dev_reg() and alt_fs_reg() is the

 * interpretation that open() places on the device name. In the case of

 * alt_dev_reg the device is assumed to be a particular character device,

 * and so there must be an exact match in the name for open to succeed.

 * In the case of alt_fs_reg() the name of the device is treated as the

 * mount point for a directory, and so any call to open() where the name

 * is the root of the device filename will succeed.

 */

extern int alt_fs_reg  (alt_dev* dev);

static ALT_INLINE int alt_dev_reg (alt_dev* dev)

{

  extern alt_llist alt_dev_list;

  return alt_dev_llist_insert ((alt_dev_llist*) dev, &alt_dev_list);

}

#ifdef __cplusplus

}

#endif

#endif /* __ALT_DEV_H__ */