Oracle SPARC T8-2 User Manual

I/O Root Complex Connections
I/O Root Complex Connections
SPARC T8 servers use a dedicated chip (IO Hub) to host the PCIe fabric. Each IOH chip has
five root complexes, four are sixteen lanes wide (x16), and one is eight lanes wide (x8). The
root complexes are divided up and assigned to all of the I/O devices in the server. The SPARC
T8-2 server contains two IOH chips. Each IOH chip connects to four of the PCIe slots. The
following table describes the device paths for the server.
The pci@ values reported in the OpenBoot show-devs command output are paths in the I/O root
complex topology.
Device
Name
IOH Root
Complex
(IOS)
Width Root Complex Path Oracle ILOM
Target
PCIeSlot1 0 3 x16
/pci@306/pci@1 /SYS/MB/PCIE1
PCIeSlot2 0 2 x16
/pci@307/pci@1 /SYS/MB/PCIE2
PCIeSlot3 0 1 x8
/pci@300/pci@2 /SYS/MB/PCIE3
PCIeSlot4 0 0 x8
/pci@301/pci@2 /SYS/MB/PCIE4
PCIeSlot5 1 3 x8
/pci@302/pci@2 /SYS/MB/PCIE5
PCIeSlot6 1 0 x8
/pci@303/pci@2 /SYS/MB/PCIE6
PCIeSlot7 1 2 x16
/pci@304/pci@1 /SYS/MB/PCIE7
PCIeSlot8 1 1 x16
/pci@305/pci@1 /SYS/MB/PCIE8
NET0 0 1 x8
/pci@300/pci@1/network@0 /SYS/MB/NET0
NET1 0 1 x8
/pci@300/pci@1/network@0,1 /SYS/MB/NET1
NET2 0 1 x8
/pci@300/pci@1/network@0,2 /SYS/MB/NET2
NET3 0 1 x8
/pci@300/pci@1/network@0,3 /SYS/MB/NET3
SAS0 0 0 x8
/pci@301/pci@1 /SYS/MB/SASHBA0
SAS1 1 0 x8
/pci@303/pci@1 /SYS/MB/SASHBA1
SPM 0 4 1x of
x4
/pci@309/pci@1 /SYS/MB/SPM
USB 1 4 x4
/pci@308/pci@1 /SYS/MB/USB_CTRL
eUSB 1 4 x1
/pci@308/pci@1/usb@0/hub@1/storage@3 /SYS/MB/
EUSB_DISK
USB - Rear Top 1 4 x1
/pci@308/pci@1/usb@0/storage@7 /SYS/MB/USB1
USB - Rear Bottom 1 4 x1
/pci@308/pci@1/usb@0/storage@2 /SYS/MB/USB0
USB - Front Left 1 4 x1
/pci@308/pci@1/usb@0/hub@4/storage@2 /SYS/FANBD/USB0
USB - Front Right 1 4 x1
/pci@308/pci@1/usb@0/hub@4/storage@1 /SYS/FANBD/USB1
Servicing PCIe Cards 121

Oracle SPARC T8-2 Specifications

General

Brand	Oracle
Model	SPARC T8-2
Category	Server
Language	English