Device Map For Pci Express Cards; C.2 Device Map Examples - Oracle SPARC Enterprise M4000 Installation And Service Manual

C.2 Device Map Examples
As shown in the diagrams below, the OpenBoot PROM displays the following parts
in sequence for each PCI card in an External I/O Expansion Unit:
The I/O Unit (IOU) slot in the server
■
Multiple devices inside the I/O boat
■
The PCI card in the I/O boat
■
Disk drives, SCSI ports, or networks that connect to the PCI card
■
C.2.1

Device Map for PCI Express Cards

This is an example of a complete device path for a PCI Express (PCIe) card in a PCI
Express boat:
/IOU_slot/pci@0/pci@9/pci@0/pci@9/abc@n
IOU_slot is the IOU slot to which the link card for a External I/O Expansion Unit is
connected. See
FIGURE C-1
accumulation of ports from the host data bus (item 1) to the PCI card (item 6).
Device Path for PCI Express (PCIe) PCI Cards
FIGURE C-1
1
and
TABLE C-1
shows the device path for a PCI Express card. The device path is the
2
1a
0
.
TABLE C-2
3 4
0
9
1
0
Appendix C PCI Cards and Device Mapping
5
6
9
1
0
9
1
0
PCIe slot 6
PCIe slot 5
PCIe slot 4
PCIe slot 3
PCIe slot 2
PCIe slot 1
C-3