98 lines
2.4 KiB
Groff
98 lines
2.4 KiB
Groff
.\" $OpenBSD: glxsb.4,v 1.5 2007/05/31 19:19:54 jmc Exp $
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.\"
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.\"Copyright (c) 2006 Tom Cosgrove <tom@openbsd.org>
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.\"
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.\"Permission to use, copy, modify, and distribute this software for any
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.\"purpose with or without fee is hereby granted, provided that the above
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.\"copyright notice and this permission notice appear in all copies.
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.\"
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.\"THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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.\"WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\"MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.\"ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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.\"WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\"ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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.\"OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd June 8, 2008
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.Dt GLXSB 4 i386
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.Os
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.Sh NAME
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.Nm glxsb
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.Nd Geode LX Security Block crypto accelerator
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device crypto"
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.Cd "device glxsb"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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glxsb_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver supports the security block of the Geode LX series processors.
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The Geode LX is a member of the AMD Geode family
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of integrated x86 system chips.
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.Pp
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Driven by periodic checks for available data from the generator,
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.Nm
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supplies entropy to the
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.Xr random 4
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driver for common usage.
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.Pp
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.Nm
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also supports acceleration of AES-128-CBC operations for
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.Xr crypto 4 .
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It also registers itself to accelerate other HMAC algorithms, although
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there is no hardware acceleration for those algorithms.
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This is only needed so
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.Nm
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can work with
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.Xr ipsec 4 .
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.Sh CAVEAT
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The
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.Xr crypto 9
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framework will fail to open the crypto session on the device if the AES
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key's length is != 128 bits.
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This prevents the use of the
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.Nm
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device driver with AES keys of length != 128 bits.
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.Sh SEE ALSO
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.Xr crypto 4 ,
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.Xr intro 4 ,
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.Xr ipsec 4 ,
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.Xr pci 4 ,
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.Xr random 4 ,
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.Xr crypto 9
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Ox 4.1 .
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The
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.Nm
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device driver was imported into
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.Fx 7.1 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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device driver was written for
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.Ox
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by
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.An Tom Cosgrove .
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It was ported to
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.Fx
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by
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.An Patrick Lamaiziere Aq Mt patfbsd@davenulle.org .
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