0,0 → 1,102 |
/* |
* Copyright (c) 2005 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup genericconsole |
* @{ |
*/ |
/** @file |
*/ |
|
#ifndef KERN_CHARDEV_H_ |
#define KERN_CHARDEV_H_ |
|
#include <arch/types.h> |
#include <synch/waitq.h> |
#include <synch/spinlock.h> |
|
#define INDEV_BUFLEN 512 |
|
struct indev; |
|
/* Input character device operations interface. */ |
typedef struct { |
/** Read character directly from device, assume interrupts disabled. */ |
wchar_t (* poll)(struct indev *); |
} indev_operations_t; |
|
/** Character input device. */ |
typedef struct indev { |
char *name; |
waitq_t wq; |
|
/** Protects everything below. */ |
SPINLOCK_DECLARE(lock); |
wchar_t buffer[INDEV_BUFLEN]; |
size_t counter; |
|
/** Implementation of indev operations. */ |
indev_operations_t *op; |
size_t index; |
void *data; |
} indev_t; |
|
|
struct outdev; |
|
/* Output character device operations interface. */ |
typedef struct { |
/** Write character to output. */ |
void (* write)(struct outdev *, wchar_t, bool); |
} outdev_operations_t; |
|
/** Character input device. */ |
typedef struct outdev { |
char *name; |
|
/** Protects everything below. */ |
SPINLOCK_DECLARE(lock); |
|
/** Implementation of outdev operations. */ |
outdev_operations_t *op; |
void *data; |
} outdev_t; |
|
extern void indev_initialize(char *name, indev_t *indev, |
indev_operations_t *op); |
extern void indev_push_character(indev_t *indev, wchar_t ch); |
extern wchar_t indev_pop_character(indev_t *indev); |
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extern void outdev_initialize(char *name, outdev_t *outdev, |
outdev_operations_t *op); |
|
extern bool check_poll(indev_t *indev); |
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#endif /* KERN_CHARDEV_H_ */ |
|
/** @} |
*/ |