现在6466桥片设置的是透明模式，p_vio,s_vio都是3.3，设备是正常设备。
在tornado 2.2, vxworks 5.5下，现在桥配置如下：
-> pciDeviceShow
Scanning function 0 of each PCI device on bus 0
Using configuration mechanism 0
bus device function vendorID deviceID class
00000000 00000000 00000000 00001057 00000012 000b2000
00000000 00000015 00000000 000010b5 00006540 00060400
00000000 00000016 00000000 000010b5 00006540 00060400
00000000 00000017 00000000 000010e3 00000148 00068000
value = 0 = 0x0
-> pciHeaderShow 0,0x15
vendor ID = 0x10b5
device ID = 0x6540
command register = 0x0007
status register = 0x02b0
revision ID = 0xcb
class code = 0x06
sub class code = 0x04
programming interface = 0x00
cache line = 0x08
latency time = 0x40
header type = 0x01
BIST = 0x00
base address 0 = 0x00000000
base address 1 = 0x00000000
primary bus number = 0x00
secondary bus number = 0x01
subordinate bus number = 0x01
secondary latency timer = 0x40
IO base = 0x01
IO limit = 0x81
secondary status = 0x22a0
memory base = 0x9000
memory limit = 0x9100
prefetch memory base = 0xc001
prefetch memory limit = 0xc101