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/*
* Mach Operating System
* Copyright (c) 1993,1991,1990,1989 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: 8/88
*/
#ifndef _DEVICE_CONF_H_
#define _DEVICE_CONF_H_
#include <mach/machine/vm_types.h>
#include <sys/types.h>
#include <mach/port.h>
#include <mach/vm_prot.h>
struct io_req;
typedef struct io_req *io_req_t;
typedef int io_return_t;
/*
* Operations list for major device types.
*/
struct dev_ops {
char * d_name; /* name for major device */
int (*d_open)(dev_t, int, io_req_t);/* open device */
void (*d_close)(dev_t, int); /* close device */
int (*d_read)(dev_t, io_req_t); /* read */
int (*d_write)(dev_t, io_req_t); /* write */
int (*d_getstat)(dev_t, int, int *, natural_t *); /* get status/control */
int (*d_setstat)(dev_t, int, int *, natural_t); /* set status/control */
int (*d_mmap)(dev_t, vm_offset_t, vm_prot_t); /* map memory */
int (*d_async_in)(); /* asynchronous input setup */
int (*d_reset)(); /* reset device */
int (*d_port_death)(dev_t, mach_port_t);
/* 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;
/*
* Routines for null entries.
*/
extern int nulldev(void); /* no operation - OK */
extern int nulldev_open(dev_t dev, int flag, io_req_t ior);
extern void nulldev_close(dev_t dev, int flags);
extern int nulldev_read(dev_t dev, io_req_t ior);
extern int nulldev_write(dev_t dev, io_req_t ior);
extern io_return_t nulldev_getstat(dev_t dev, int flavor, int *data, natural_t *count);
extern io_return_t nulldev_setstat(dev_t dev, int flavor, int *data, natural_t count);
extern io_return_t nulldev_portdeath(dev_t dev, mach_port_t port);
extern int nodev(void); /* no operation - error */
extern int nomap(dev_t dev, vm_offset_t off, int prot); /* no operation - error */
/*
* Flavor constants for d_dev_info routine
*/
#define D_INFO_BLOCK_SIZE 1
/*
* Head of list of attached devices
*/
extern struct dev_ops dev_name_list[];
extern int dev_name_count;
/*
* Macro to search device list
*/
#define dev_search(dp) \
for (dp = dev_name_list; \
dp < &dev_name_list[dev_name_count]; \
dp++)
/*
* Indirection vectors for certain devices.
*/
struct dev_indirect {
char * d_name; /* name for device */
dev_ops_t d_ops; /* operations (major device) */
int d_unit; /* and unit number */
};
typedef struct dev_indirect *dev_indirect_t;
/*
* List of indirect devices.
*/
extern struct dev_indirect dev_indirect_list[];
extern int dev_indirect_count;
/*
* Macro to search indirect list
*/
#define dev_indirect_search(di) \
for (di = dev_indirect_list; \
di < &dev_indirect_list[dev_indirect_count]; \
di++)
#endif /* _DEVICE_CONF_H_ */
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