1.\" $OpenBSD: glxsb.4,v 1.5 2007/05/31 19:19:54 jmc Exp $ 2.\" 3.\"Copyright (c) 2006 Tom Cosgrove <tom@openbsd.org> 4.\" 5.\"Permission to use, copy, modify, and distribute this software for any 6.\"purpose with or without fee is hereby granted, provided that the above 7.\"copyright notice and this permission notice appear in all copies. 8.\" 9.\"THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\"WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\"MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\"ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\"WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\"ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\"OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.\" $FreeBSD$ 18.\" 19.Dd June 8, 2008 20.Dt GLXSB 4 i386 21.Os 22.Sh NAME 23.Nm glxsb 24.Nd Geode LX Security Block crypto accelerator 25.Sh SYNOPSIS 26To compile this driver into the kernel, 27place the following lines in your 28kernel configuration file: 29.Bd -ragged -offset indent 30.Cd "device crypto" 31.Cd "device glxsb" 32.Ed 33.Pp 34Alternatively, to load the driver as a 35module at boot time, place the following line in 36.Xr loader.conf 5 : 37.Bd -literal -offset indent 38glxsb_load="YES" 39.Ed 40.Sh DESCRIPTION 41The 42.Nm 43driver supports the security block of the Geode LX series processors. 44The Geode LX is a member of the AMD Geode family 45of integrated x86 system chips. 46.Pp 47Driven by periodic checks for available data from the generator, 48.Nm 49supplies entropy to the 50.Xr random 4 51driver for common usage. 52.Pp 53.Nm 54also supports acceleration of AES-128-CBC operations for 55.Xr crypto 4 . 56It also registers itself to accelerate other HMAC algorithms, although 57there is no hardware acceleration for those algorithms. 58This is only needed so 59.Nm 60can work with 61.Xr ipsec 4 . 62.Sh CAVEAT 63The 64.Xr crypto 9 65framework will fail to open the crypto session on the device if the AES 66key's length is != 128 bits. 67This prevents the use of the 68.Nm 69device driver with AES keys of length != 128 bits. 70.Sh SEE ALSO 71.Xr crypto 4 , 72.Xr intro 4 , 73.Xr pci 4 , 74.Xr ipsec 4 , 75.Xr random 4 , 76.Xr crypto 9 77.Sh HISTORY 78The 79.Nm 80device driver first appeared in 81.Ox 4.1 . 82The 83.Nm 84device driver was imported into 85.Fx 7.1 . 86.Sh AUTHORS 87.An -nosplit 88The 89.Nm 90device driver was written for 91.Ox 92by 93.An Tom Cosgrove . 94It was ported to 95.Fx 96by 97.An Patrick Lamaiziere Aq patfbsd@davenulle.org . 98