2003-09-25 19:14:40 +00:00
|
|
|
.\"
|
|
|
|
|
.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
|
|
|
|
|
.\" 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 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 AUTHOR 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.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
|
|
|
|
.Dd July 21, 2003
|
|
|
|
|
.Dt PMAP_MAP 9
|
2004-07-06 07:02:31 +00:00
|
|
|
.Os
|
2003-09-25 19:14:40 +00:00
|
|
|
.Sh NAME
|
|
|
|
|
.Nm pmap_map
|
|
|
|
|
.Nd map a physical memory range into kernel virtual address (KVA) space
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.In sys/param.h
|
|
|
|
|
.In vm/vm.h
|
|
|
|
|
.In vm/pmap.h
|
|
|
|
|
.Ft vm_offset_t
|
2004-07-05 18:13:50 +00:00
|
|
|
.Fo pmap_map
|
|
|
|
|
.Fa "vm_offset_t *virt" "vm_paddr_t start" "vm_paddr_t end" "int prot"
|
|
|
|
|
.Fc
|
2003-09-25 19:14:40 +00:00
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.Fn pmap_map
|
|
|
|
|
function maps a range of physical addresses into kernel virtual address (KVA)
|
|
|
|
|
space, from
|
|
|
|
|
.Fa start
|
|
|
|
|
to
|
|
|
|
|
.Fa end ,
|
|
|
|
|
with protection bits
|
|
|
|
|
.Fa prot .
|
|
|
|
|
.Pp
|
|
|
|
|
The value passed in
|
|
|
|
|
.Fa *virt
|
|
|
|
|
is treated as a hint for the virtual address of the beginning of the mapping.
|
|
|
|
|
.Sh IMPLEMENTATION NOTES
|
|
|
|
|
The
|
|
|
|
|
.Fa prot
|
|
|
|
|
argument is currently ignored by machine-dependent implementations.
|
|
|
|
|
.Pp
|
|
|
|
|
Architectures which can support a direct mapped physical to virtual
|
|
|
|
|
region can return the appropriate address within that region, leaving
|
|
|
|
|
.Fa *virt
|
|
|
|
|
unchanged.
|
|
|
|
|
.Sh RETURN VALUES
|
|
|
|
|
The
|
|
|
|
|
.Fn pmap_map
|
|
|
|
|
function returns the virtual address of the beginning of the mapping, if
|
|
|
|
|
the mapping was successfully made;
|
|
|
|
|
.Fa *virt
|
|
|
|
|
will also be updated with the first usable address after the mapped region.
|
|
|
|
|
.Pp
|
|
|
|
|
If the function is unsuccessful,
|
|
|
|
|
.Dv NULL
|
|
|
|
|
is returned.
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr pmap 9
|
|
|
|
|
.Sh AUTHORS
|
|
|
|
|
This manual page was written by
|
|
|
|
|
.An Bruce M Simpson Aq bms@spc.org .
|
