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SPARC T5-8 Server Service Manual

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Updated: February 2019
 
 

Root Complex Connections (Two Processor Modules)

This diagram illustrates the root complex connections between the two processor modules and the 16 PCIe I/O slots in a half-populated server. Each CPU supports two I/O root complex fabrics. Each root complex connects to four I/O slots through two of five multiplexing switches.

image:Graphic showing the PCIe root complex topology for a half-populated server.

The port ID values shown in the diagram correspond to the pci@ values reported in the showdevs command output. For example:

PM
CPU
Switch
I/O Slot
Root Complex Path
0
0
0
1
/pci@300/pci@1/pci@0/pci@6
0
0
0
2
/pci@300/pci@1/pci@0/pci@c
0
0
1
3
/pci@340/pci@1/pci@0/pci@6
0
0
1
4
/pci@340/pci@1/pci@0/pci@c
3
2
1
5
/pci@600/pci@1/pci@0/pci@e
3
2
1
6
/pci@600/pci@1/pci@0/pci@8
3
2
2
7
/pci@640/pci@1/pci@0/pci@e
3
2
2
8
/pci@640/pci@1/pci@0/pci@8
0
1
2
9
/pci@380/pci@1/pci@0/pci@a
0
1
2
10
/pci@380/pci@1/pci@0/pci@4
0
1
3
11
/pci@3c0/pci@1/pci@0/pci@e
0
1
3
12
/pci@3c0/pci@1/pci@0/pci@8
3
3
3
13
/pci@680/pci@1/pci@0/pci@a
3
3
3
14
/pci@680/pci@1/pci@0/pci@4
3
3
4
15
/pci@6c0/pci@1/pci@0/pci@8
3
3
4
16
/pci@6c0/pci@1/pci@0/pci@4

Note - If you are upgrading the server, return to Server Upgrade Process.

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