69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/*
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* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
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* The President and Fellows of Harvard College.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _GENERIC_CONSOLE_H_
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#define _GENERIC_CONSOLE_H_
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/*
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* Device data for the hardware-independent system console.
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*
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* devdata, send, and sendpolled are provided by the underlying
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* device, and are to be initialized by the attach routine.
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*/
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#define CONSOLE_INPUT_BUFFER_SIZE 32
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struct con_softc {
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/* initialized by attach routine */
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void *cs_devdata;
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void (*cs_send)(void *devdata, int ch);
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void (*cs_sendpolled)(void *devdata, int ch);
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/* initialized by config routine */
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struct semaphore *cs_rsem;
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struct semaphore *cs_wsem;
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unsigned char cs_gotchars[CONSOLE_INPUT_BUFFER_SIZE];
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unsigned cs_gotchars_head; /* next slot to put a char in */
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unsigned cs_gotchars_tail; /* next slot to take a char out */
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};
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/*
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* Functions called by lower-level drivers
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*/
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void con_input(/*struct con_softc*/ void *cs, int ch);
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void con_start(/*struct con_softc*/ void *cs);
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/*
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* Functions called by higher-level code
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*
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* putch/getch - see <lib.h>
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*/
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#endif /* _GENERIC_CONSOLE_H_ */
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