[Patch] Display IOMMU pci subclass

From: Dmitry Luhtionov <dmitryluhtionov_at_gmail.com> Date: Tue, 6 May 2014 12:48:03 +0300 · This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:49 UTC

pciconf output, found on Tyan S8236 motherboard

none0_at_pci0:0:0:2:       class=0x080600 card=0x5a231002 chip=0x5a231002
rev=0x00 hdr=0x00
    vendor     = 'Advanced Micro Devices [AMD] nee ATI'
    device     = 'RD990 I/O Memory Management Unit (IOMMU)'
    class      = base peripheral

References:

http://www.pcisig.com/specifications/conventional/ECN_subclass_IB.pdf
http://www.pcisig.com/specifications/pciexpress/specifications/ECN-Change_Root_Complex_Event_Collector_Class_Code_2012-12-13.pdf