Kudos to Henri Hennebert (https://github.com/hlh-restart/rtsx) https://reviews.freebsd.org/rS367998

No need anymore:

A sad attempt on porting OpenBSD rtsx driver to FreeBSD.

Based on this: https://www.freebsd.org/doc/en_US.ISO8859-1/books/arch-handbook/pci.html example.

What works:

• probe (with fixed dev id x)
• attach (and pcidev initialization... even detects if card is present or not when kldloading the module)
• detach (atleast kldunload)

TODO:

• hao doai FreeBSD BUS
• devmethods to implement the mmc interface