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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* Author: David B. Golub, Carnegie Mellon University
* Date: 3/89
*/
/*
* Mach device emulation definitions (i386at version).
*
* Copyright (c) 1996 The University of Utah and
* the Computer Systems Laboratory at the University of Utah (CSL).
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software is hereby
* granted provided that (1) source code retains these copyright, permission,
* and disclaimer notices, and (2) redistributions including binaries
* reproduce the notices in supporting documentation, and (3) all advertising
* materials mentioning features or use of this software display the following
* acknowledgement: ``This product includes software developed by the
* Computer Systems Laboratory at the University of Utah.''
*
* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* CSL requests users of this software to return to csl-dist@cs.utah.edu any
* improvements that they make and grant CSL redistribution rights.
*
* Author: Shantanu Goel, University of Utah CSL
*/
#ifndef _DEVICE_DEV_HDR_H_
#define _DEVICE_DEV_HDR_H_
#include <mach.h>
#include <hurd.h>
#include <hurd/ports.h>
#include <cthreads.h>
#include "device_emul.h"
/*
* Operations list for major device types.
*/
struct dev_ops {
char * d_name; /* name for major device */
int (*d_open)(); /* open device */
int (*d_close)(); /* close device */
int (*d_read)(); /* read */
int (*d_write)(); /* write */
int (*d_getstat)(); /* get status/control */
int (*d_setstat)(); /* set status/control */
vm_offset_t (*d_mmap)(); /* map memory */
int (*d_async_in)();/* asynchronous input setup */
int (*d_reset)(); /* reset device */
int (*d_port_death)();
/* clean up reply ports */
int d_subdev; /* number of sub-devices per
unit */
int (*d_dev_info)(); /* driver info for kernel */
};
typedef struct dev_ops *dev_ops_t;
/* This structure is associated with each open device port.
* The port representing the device points to this structure. */
struct emul_device
{
struct device_emulation_ops *emul_ops;
void *emul_data;
};
typedef struct emul_device *emul_device_t;
#define DEVICE_NULL ((device_t) 0)
/*
* Generic device header. May be allocated with the device,
* or built when the device is opened.
*/
struct mach_device {
struct port_info port;
struct emul_device dev; /* the real device structure */
};
typedef struct mach_device *mach_device_t;
#define MACH_DEVICE_NULL ((mach_device_t)0)
/*
* To find and remove device entries
*/
mach_device_t device_lookup(char *); /* by name */
/*
* To find and remove port-to-device mappings
*/
void dev_port_enter(mach_device_t);
void dev_port_remove(mach_device_t);
/*
* To call a routine on each device
*/
boolean_t dev_map(boolean_t (*)(), mach_port_t);
/*
* To lock and unlock state and open-count
*/
#define device_lock(device) mutex_lock(&(device)->lock)
#define device_unlock(device) mutex_unlock(&(device)->lock)
#endif /* _DEVICE_DEV_HDR_H_ */
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