The controllers looks like this

# pciconf -l -BbcV ppt2@pci0:0:26:0
ppt2@pci0:0:26:0:       class=0x0c0320 card=0x72708086 chip=0x8d2d8086
rev=0x05 hdr=0x00
     bar   [10] = type Memory, range 32, base 0xc6134000, size 1024, enabled

     cap 01[50] = powerspec 2  supports D0 D3  current D0
     cap 0a[58] = EHCI Debug Port at offset 0xa0 in map 0x14
     cap 13[98] = PCI Advanced Features: FLR TP

More importantly, EHCI controllers don't support MSI/MSI-x interrupts which is currently required for bhyve PCI-passthru.


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