关于USB主控器!

如何才能知道主板上是用的是开放型主控器还是用的能用的主控器？

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PCI bus 00 device 1F function 02:  Header Type \'non-bridge\' (multi-func)
Vendor: 8086 Intel Corporation                                
Device: 2442 ???                                              
Class:  0C serial bus           Revision: 05
SubClass: 03 USB                 ProgramI/F: 00
CommandReg: 0005 = I/O-on busmstr
Status Reg: 0280 = fast-trns (med)
CacheLine:   00 Latency: 00 BIST:     00
SubsysVendor:    8086 SubsysDevice: 2442
Base Addresses:
(4) 0000D001 = I/O base=0000D000 len=32
CardBus:     00000000 ExpansionROM: 00000000 (no ROM)
INTline:   0B INTpin:       04
MinGrant:   00 MaxLatency:   00
Device-Specific Data:
 40: 00000000  00000000  00000000  00000000  00000000  00000000
 58: 00000000  00000000  00000010  00000000  00000000  00000000
 70: 00000000  00000000  00000000  00000000  00000000  00000000
 88: 00000000  00000000  00000000  00000000  00000000  00000000
 A0: 00000000  00000000  00000000  00000000  00000000  00000000
 B8: 00000000  00000000  00002F00  00000000  00000000  00000000
 D0: 00000000  00000000  00000000  00000000  00000000  00000000
 E8: 00000000  00000000  00000000  00000000  00000F47  00000000

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这是我用pci config 看到，　我的主控器是不通用型！

可以通过读取控制器的PCI CLASS CODE来区别。
UHCI:0C0300h
OHCI:0C0310h :)