mpr.4: Add Broadcom LSI 3808 to support list

[zldrobit_gmail.com]

Summary

The product brief "MegaRAID™ 9500 PCIe Gen 4.0 Tri-Mode Storage Adapters" (https://docs.broadcom.com/doc/MegaRAID-9500-Tri-Mode-Storage-Adapters) confirms that LSI 3808/3908 are supported in FreeBSD.

[ziaee]

Have you tested this? There is also a newer driver called mrsas.

[zldrobit_gmail.com]

IIRC, I only have LSI 3808 (MegaRAID 9500 8i), and I could test it tomorrow. The original mailing list about LSI 3808 I found is Re: SAS3808 PCI-E 4.0, FreeBSD / ZFS support ?.

[ziaee]

Awesome, thank you so much. When you test it tomorrow, could you also test blacklisting it and using mrsas as well? We've been having a big problem trying to identify what is supported lately, and we do have an open review for it:

https://reviews.freebsd.org/D52125

Thank you so much!

[zldrobit_gmail.com]

@ziaee I tested the LSI SAS 3908 (MegaRAID 9560 8i), with 14.3-RELEASE. The mrsas driver is automatically loaded, it works with either JBOD mode or RAID0. However, after devctl detach -f and devctl set driver -f device mpr, devctl responded with "device not configured". Even with hint.mpr.0.at="pcix:y:z" in device.hints, the mrsas driver will be loaded instead of the mpr one. In my test, mpr driver does not support SAS 3908, at least with the current firmware. So I delete the SAS 3908 in the support list of the patch.