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NetBSD/sys/uvm/uvm_device.h

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Round of uvm.h cleanup. The poorly named uvm.h is generally supposed to be for uvm-internal users only. - Narrow it to files that actually need it -- mostly files that need to query whether curlwp is the pagedaemon, which should maybe be exposed by an external header. - Use uvm_extern.h where feasible and uvm_*.h for things not exposed by it. We should split up uvm_extern.h but this will serve for now to reduce the uvm.h dependencies. - Use uvm_stat.h and #ifdef UVMHIST uvm.h for files that use UVMHIST(ubchist), since ubchist is declared in uvm.h but the reference evaporates if UVMHIST is not defined, so we reduce header file dependencies. - Make uvm_device.h and uvm_swap.h independently includable while here. ok chs@
2020-09-05 19:30:10 +03:00
/* $NetBSD: uvm_device.h,v 1.14 2020/09/05 16:30:13 riastradh Exp $ */
initial import of the new virtual memory system, UVM, into -current. UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some minor portions derived from the old Mach code. i provided some help getting swap and paging working, and other bug fixes/ideas. chuck silvers <chuq@chuq.com> also provided some other fixes. this is the UVM kernel code portion. this will be KNF'd shortly. :-)
1998-02-05 09:25:08 +03:00
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
restore rcsids
1998-02-07 14:07:38 +03:00
*
* from: Id: uvm_device.h,v 1.1.2.2 1997/10/03 17:39:44 chuck Exp
initial import of the new virtual memory system, UVM, into -current. UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some minor portions derived from the old Mach code. i provided some help getting swap and paging working, and other bug fixes/ideas. chuck silvers <chuq@chuq.com> also provided some other fixes. this is the UVM kernel code portion. this will be KNF'd shortly. :-)
1998-02-05 09:25:08 +03:00
*/
add/cleanup multiple inclusion protection.
1998-02-10 05:34:17 +03:00
#ifndef _UVM_UVM_DEVICE_H_
#define _UVM_UVM_DEVICE_H_
initial import of the new virtual memory system, UVM, into -current. UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some minor portions derived from the old Mach code. i provided some help getting swap and paging working, and other bug fixes/ideas. chuck silvers <chuq@chuq.com> also provided some other fixes. this is the UVM kernel code portion. this will be KNF'd shortly. :-)
1998-02-05 09:25:08 +03:00
/*
* uvm_device.h
*
* device handle into the VM system.
*/
Round of uvm.h cleanup. The poorly named uvm.h is generally supposed to be for uvm-internal users only. - Narrow it to files that actually need it -- mostly files that need to query whether curlwp is the pagedaemon, which should maybe be exposed by an external header. - Use uvm_extern.h where feasible and uvm_*.h for things not exposed by it. We should split up uvm_extern.h but this will serve for now to reduce the uvm.h dependencies. - Use uvm_stat.h and #ifdef UVMHIST uvm.h for files that use UVMHIST(ubchist), since ubchist is declared in uvm.h but the reference evaporates if UVMHIST is not defined, so we reduce header file dependencies. - Make uvm_device.h and uvm_swap.h independently includable while here. ok chs@
2020-09-05 19:30:10 +03:00
#include <sys/types.h>
#include <sys/queue.h>
#include <uvm/uvm_object.h>
initial import of the new virtual memory system, UVM, into -current. UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some minor portions derived from the old Mach code. i provided some help getting swap and paging working, and other bug fixes/ideas. chuck silvers <chuq@chuq.com> also provided some other fixes. this is the UVM kernel code portion. this will be KNF'd shortly. :-)
1998-02-05 09:25:08 +03:00
/*
* the uvm_device structure. object is put at the top of the data structure.
* this allows:
* (struct uvm_device *) == (struct uvm_object *)
*/
struct uvm_device {
KNF.
1998-03-09 03:58:55 +03:00
struct uvm_object u_obj; /* the actual VM object */
int u_flags; /* flags [LOCKED BY UDV_LOCK!] */
dev_t u_device; /* our device */
LIST_ENTRY(uvm_device) u_list; /* list of device objects */
initial import of the new virtual memory system, UVM, into -current. UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some minor portions derived from the old Mach code. i provided some help getting swap and paging working, and other bug fixes/ideas. chuck silvers <chuq@chuq.com> also provided some other fixes. this is the UVM kernel code portion. this will be KNF'd shortly. :-)
1998-02-05 09:25:08 +03:00
};
/*
* u_flags values
*/
#define UVM_DEVICE_HOLD 0x1 /* someone has a "hold" on it */
#define UVM_DEVICE_WANTED 0x2 /* someone wants to put a "hold" on */
Protect prototypes, certain macros, and inlines from userland.
1999-06-21 21:25:11 +04:00
#ifdef _KERNEL
Round of uvm.h cleanup. The poorly named uvm.h is generally supposed to be for uvm-internal users only. - Narrow it to files that actually need it -- mostly files that need to query whether curlwp is the pagedaemon, which should maybe be exposed by an external header. - Use uvm_extern.h where feasible and uvm_*.h for things not exposed by it. We should split up uvm_extern.h but this will serve for now to reduce the uvm.h dependencies. - Use uvm_stat.h and #ifdef UVMHIST uvm.h for files that use UVMHIST(ubchist), since ubchist is declared in uvm.h but the reference evaporates if UVMHIST is not defined, so we reduce header file dependencies. - Make uvm_device.h and uvm_swap.h independently includable while here. ok chs@
2020-09-05 19:30:10 +03:00
#include <uvm/uvm_param.h>
#include <uvm/uvm_prot.h>
initial import of the new virtual memory system, UVM, into -current. UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some minor portions derived from the old Mach code. i provided some help getting swap and paging working, and other bug fixes/ideas. chuck silvers <chuq@chuq.com> also provided some other fixes. this is the UVM kernel code portion. this will be KNF'd shortly. :-)
1998-02-05 09:25:08 +03:00
/*
* prototypes
*/
add a new "fo_mmap" fileops method to allow use of arbitrary uvm_objects for mappings of file objects. move vnode-specific details of mmap()ing a vnode from uvm_mmap() to the new vnode-specific vn_mmap(). add new uvm_mmap_dev() and uvm_mmap_anon() convenience functions for mapping character devices and anonymous memory, and replace all other calls to uvm_mmap() with those. use the new fileop in drm2 so that libdrm can use mmap() to map things like on other platforms (instead of the ioctl that we have used so far).
2014-12-15 02:48:58 +03:00
struct uvm_object *udv_attach(dev_t, vm_prot_t, voff_t, vsize_t);
initial import of the new virtual memory system, UVM, into -current. UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some minor portions derived from the old Mach code. i provided some help getting swap and paging working, and other bug fixes/ideas. chuck silvers <chuq@chuq.com> also provided some other fixes. this is the UVM kernel code portion. this will be KNF'd shortly. :-)
1998-02-05 09:25:08 +03:00
Protect prototypes, certain macros, and inlines from userland.
1999-06-21 21:25:11 +04:00
#endif /* _KERNEL */
add/cleanup multiple inclusion protection.
1998-02-10 05:34:17 +03:00
#endif /* _UVM_UVM_DEVICE_H_ */