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116 lines
4.7 KiB
C
116 lines
4.7 KiB
C
#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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