TODO

   1 Capabilities with partial decoding:
   2 - PCIe 2nd set of control/status registers (have spec)
   3 - HyperTransport caps (have spec)
   4
   5 Capabilities with no decoding:
   6 - VPD (have spec)
   7 - CompactPCI hot-swap
   8 - CompactPCI central resource control
   9 - AGP3
  10 - Secure device
  11 - SATA HBA (have spec)
  12 - Advanced features (have spec)
  13 - Advanced Error Reporting (ext'd)
  14 - Virtual Channel (ext'd)
  15 - Power Budgeting (ext'd)
  16 - Root Complex * (ext'd)
  17 - Multi-Function Virtual Channel (ext'd)
  18 - Root Bridge Control Block (ext'd)
  19 - Access Controls (ext'd)
  20
  21 PCIIDS:
  22 - delete old DB at SF