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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: 8/89
*
* Device service utility routines.
*/
#ifndef DS_ROUTINES_H
#define DS_ROUTINES_H
#include <vm/vm_map.h>
#include <device/device_types.h>
#include <device/io_req.h>
#include <mach/machine/vm_types.h>
/*
* Map for device IO memory.
*/
extern vm_map_t device_io_map;
extern queue_head_t io_done_list;
kern_return_t device_read_alloc(io_req_t, vm_size_t);
kern_return_t device_write_get(io_req_t, boolean_t *);
boolean_t device_write_dealloc(io_req_t);
void device_reference(device_t);
boolean_t ds_notify(mach_msg_header_t *msg);
boolean_t ds_open_done(io_req_t);
boolean_t ds_read_done(io_req_t);
boolean_t ds_write_done(io_req_t);
void iowait (io_req_t ior);
kern_return_t device_pager_setup(
const mach_device_t device,
int prot,
vm_offset_t offset,
vm_size_t size,
mach_port_t *pager);
extern void mach_device_init(void);
extern void dev_lookup_init(void);
extern void device_pager_init(void);
extern void io_done_thread(void) __attribute__ ((noreturn));
io_return_t ds_device_write_trap(
device_t dev,
dev_mode_t mode,
recnum_t recnum,
vm_offset_t data,
vm_size_t count);
io_return_t ds_device_writev_trap(
device_t dev,
dev_mode_t mode,
recnum_t recnum,
io_buf_vec_t *iovec,
vm_size_t count);
#endif /* DS_ROUTINES_H */
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