Backport of glxsb(4) to RELENG_6

[Lars Engels]

On Fri, Feb 13, 2009 at 09:05:16PM +0100, Patrick Lamaizière wrote:
> Le Fri, 13 Feb 2009 15:43:33 +0100,
> Patrick Lamaizière <patfbsd at davenulle.org>:
> 
> > Le Thu, 12 Feb 2009 22:34:43 +0100,
> > Lars Engels <lme at FreeBSD.org>:
> > 
> > Hi,
> > 
> > > I just tried it, but I get this message: 
> > > glxsb0: <AMD Geode LX Security Block (AES-128-CBC, RNG)> mem
> > > 0xefff4000-0xefff7fff irq 9 at device 1.2 on pci0 
> > 
> > > glxsb0: cannot allocate DMA memory of 32768 bytes (12)
> > 
> > I think you are very low on memory and the driver cannot allocate his
> > DMA-able buffer (error 12=ENOMEM)
> > 
> > This is not really a bug. 
> 
> To Lars: Yes it should work at bootime. You must also load the module
> cryptodev.ko to use it with openssl.
> 
> > But i've found another problem related to
> > the taskqueue. 
> > 
> > I'm doing a fake driver to be able to test on a vmware machine.
> 
> I've tested most of the driver and I think (hope) this is ok.
> 
> http://user.lamaiziere.net/patrick/glxsb-6-130209.tar.gz
> 
> Let me know how it works.

Sorry for the late reply. I just tried the new version (thanks for
compiling, stas :) ) and it works now:
glxsb0: <AMD Geode LX Security Block (AES-128-CBC, RNG)> mem 0xefff4000-0xefff7fff irq 9 at device 1.2 on pci0

moe:~# geli list
Geom name: mirror/dataraid1.eli
EncryptionAlgorithm: AES-CBC
KeyLength: 128
Crypto: hardware
[...]

But the speed is the same. I still only get ~1.2MB/s transfer speed over
the net.
However, this doesn't seem to be related to geli. The cpu is pretty much
idling:
last pid:  2769;  load averages:  0.06,  0.10,  0.08 up 0+00:18:04  12:23:07
39 processes:  1 running, 38 sleeping
CPU:  0.8% user,  0.0% nice, 16.7% system,  9.3% interrupt, 73.2% idle
Mem: 25M Active, 100M Inact, 35M Wired, 6192K Cache, 27M Buf, 588K Free


Anyways, thank you for your work on backporting the driver, Patrick! :)

Lars
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