TODO

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