On Sun, 1 Mar 2020, BALATON Zoltan wrote:
is not legacy mode but "not 100% native mode". The prog-if is set to 0x8a which corresponds to native mode but this is what the Linux fixup function does, firmware sets it to 0x8f which means native mode.
I mean, 0x8a legacy mode and 0x8f native mode, I see firmware poking 0x8f and Amiga like OSes reading that yet expecting legacy interrupts. Linux fixes up prog-if so its driver detects legacy interrupts but still uses ioports from PCI BARs.
Regards, BALATON Zoltan
