QAT driver

[Mark Johnston]

On Mon, Nov 09, 2020 at 10:08:33PM +0300, Özkan KIRIK wrote:
> This is cutted output, full output is attached. It's using C620. I think
> it's supported.
> There are two QAT chips SoC. Is it possible to use both of them ?
> 
> none100 at pci0:181:0:0:   class=0x0b4000 card=0x00008086 chip=0x37c88086
> rev=0x04 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = 'C62x Chipset QuickAssist Technology'
>     class      = processor
> none101 at pci0:182:0:0:   class=0x0b4000 card=0x00008086 chip=0x37c88086
> rev=0x04 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = 'C62x Chipset QuickAssist Technology'
>     class      = processor

Yes, this should be recognized by the driver.  This particular device
type is untested though, so I'd be interested in hearing results on way
or another.

There shouldn't be any problem using multiple qat(4) instances, though
this was not tested either.  In OpenCrypto's model each session is bound
to a specific device and new sessions are bound to the device with
fewest sessions, so if you have at least two crypto sessions active in
your workload both QAT devices will be used, for better or worse.

> On Mon, Nov 9, 2020 at 9:53 PM Mark Johnston <markj at freebsd.org> wrote:
> 
> > On Mon, Nov 09, 2020 at 09:44:40PM +0300, Özkan KIRIK wrote:
> > > great job! thank you!
> > >
> > > Does the work supports Xeon D-2100 series ? (Exact model: Xeon D-2146NT)
> > > Regards