cs350/kern/dev/lamebus/lhd.h

/*
 * 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 _LAMEBUS_LHD_H_
#define _LAMEBUS_LHD_H_

#include <device.h>

/*
 * Our sector size
 */
#define LHD_SECTSIZE  512

/*
 * Hardware device data associated with lhd (LAMEbus hard disk)
 */
struct lhd_softc {
	/* Initialized by lower-level attach code */
	void *lh_busdata;		/* The bus we're on */ 
	uint32_t lh_buspos;		/* Our slot on that bus */
	int lh_unit;			/* What number lhd we are */

	/*
	 * Initialized by config_lhd 
	 */

	void *lh_buf;			/* Pointer to on-card I/O buffer */
	int lh_result;			/* Result from I/O operation */
	struct semaphore *lh_clear;	/* Synchronization */
	struct semaphore *lh_done;

	struct device lh_dev;		/* VFS device structure */
};

/* Functions called by lower-level drivers */
void lhd_irq(/*struct lhd_softc*/ void *);	/* Interrupt handler */

#endif /* _LAMEBUS_LHD_H_ */