/* * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009 * The President and Fellows of Harvard College. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``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 UNIVERSITY OR CONTRIBUTORS 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. */ #ifndef _GENERIC_CONSOLE_H_ #define _GENERIC_CONSOLE_H_ /* * Device data for the hardware-independent system console. * * devdata, send, and sendpolled are provided by the underlying * device, and are to be initialized by the attach routine. */ #define CONSOLE_INPUT_BUFFER_SIZE 32 struct con_softc { /* initialized by attach routine */ void *cs_devdata; void (*cs_send)(void *devdata, int ch); void (*cs_sendpolled)(void *devdata, int ch); /* initialized by config routine */ struct semaphore *cs_rsem; struct semaphore *cs_wsem; unsigned char cs_gotchars[CONSOLE_INPUT_BUFFER_SIZE]; unsigned cs_gotchars_head; /* next slot to put a char in */ unsigned cs_gotchars_tail; /* next slot to take a char out */ }; /* * Functions called by lower-level drivers */ void con_input(/*struct con_softc*/ void *cs, int ch); void con_start(/*struct con_softc*/ void *cs); /* * Functions called by higher-level code * * putch/getch - see <lib.h> */ #endif /* _GENERIC_CONSOLE_H_ */