Oracle SPARC T5-4 Service Manual page 154

Understanding PCIe Root Complex Connections
This diagram illustrates the root complex connections between the four CPUs and the 16 PCIe
I/O slots. Each CPU supports two I/O root complex fabrics. Each root complex connects to two
I/O slots through one of five multiplexing switches.
The port ID values shown in the diagram correspond to the pci@ values reported in the
showdevs command output. For example:
PM
0
0
0
0
1
1
1
1
0
0
0
0
154 SPARC T5-4 Server Service Manual • July 2016
CPU Switch I/O Slot
0 0 1
0 0 2
0 1 3
0 1 4
2 1 5
2 1 6
2 2 7
2 2 8
1 2 9
1 2 10
1 3 11
1 3 12
Root Complex Path
/pci@300/pci@1/pci@0/pci@6
/pci@300/pci@1/pci@0/pci@c
/pci@340/pci@1/pci@0/pci@6
/pci@340/pci@1/pci@0/pci@c
/pci@400/pci@1/pci@0/pci@e
/pci@400/pci@1/pci@0/pci@8
/pci@440/pci@1/pci@0/pci@e
/pci@440/pci@1/pci@0/pci@8
/pci@380/pci@1/pci@0/pci@a
/pci@380/pci@1/pci@0/pci@4
/pci@3c0/pci@1/pci@0/pci@e
/pci@3c0/pci@1/pci@0/pci@8