[Bug 1814682] Review Request: rshim - rshim driver for Mellanox BlueField SoC

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https://bugzilla.redhat.com/show_bug.cgi?id=1814682



--- Comment #23 from Alaa Hleihel (Mellanox) <ahleihel@xxxxxxxxxx> ---
Thanks!

I see is pbunyan's setup :)

* mellanox-bluefield-01.khw4.lab.eng.bos.redhat.com
This is indeed the BlueFeild card, that we also refer to as the SmartNIC.

The 'external' host that host this card is also an ARM64 system in this case
(which doesn't matter much for us), it is:
hpe-mantis-01.khw4.lab.eng.bos.redhat.com
I used to connect to the SmartNIC console from the mantis host using this
command:
# minicom --baudrate 115200 --device /dev/ttyUSB0
Anyway, you already got a direct SSH connection to this SmartNIC (ssh to
mellanox-bluefield-01.khw4.lab.eng.bos.redhat.com host).

So to test out the new rshim user-space package, you need to login to the
mantis host and install it there.
But first, note that you need to remove the rshim kernel module that is
currently installed and running there (RPM package
rshim-1.16-0.ga7ad4e6_4.18.0_80.el8.aarch64.aarch64)
[root@hpe-mantis-01 ~]# lsmod | grep rshim
rshim_net             262144  0
rshim_pcie            262144  0
rshim                 262144  2 rshim_pcie,rshim_net
[root@hpe-mantis-01 ~]# 


(In reply to Honggang LI from comment #22)
> (In reply to Alaa Hleihel (Mellanox) from comment #20)
> 
> > Connecting to the SmartNIC is possible via couple of interfaces:
> > 1. minicom to the UART/USB interface (if cables are connected)
> > 2. using rshim driver on the external host, we get the /dev/rshimX/console
>            ^^^^^^^^^^^^
> 
> Do you mean kernel space driver? or user space driver?

Either one will provide this console. But we are moving away from the kernel
implementation to the user-space one,
so let's focus on the new user-space driver.

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