Where is hptrr kernel module in 13.3 ?

I wanted to use an old "RocketRaid 1740" SATA PCI card in a machine,
and that requires the "hptrr" driver.  This page:

https://www.freebsd.org/releases/13.3R/hardware/

Suggests it's part of the 13.3 release, but I cannot find anything but
a man page for it on my 13.3 systems (all three of them).

Further, I installed the source tree (using git) because I though
maybe I had to build the module, but hptrr isn't mentioned at
all in the /usr/src/sys/amd64/GENERIC file, so I can't "enable" it
to be built as part of the kernel.

What am I missing?

Thanks,
Bill Dudley
This email is free of malware because I run Linux.