Dynamic Reconfiguration - IDT 89HPES64H16G2 User Manual

IDT Architectural Overview
Notes
PES64H16G2 User Manual
Each partition operates logically as a completely independent PCIe switch that implements the behavior
and capabilities outlined in the PCI Express Base specification required of a switch.
The PES64H16G2 supports boot-time (i.e., Fundamental Reset) and runtime configuration of ports into
partitions. Boot time configuration may be performed via serial EEPROM, external SMBus master, or soft-
ware executing on a root port (e.g., BIOS, OS, drive or hypervisor).
Runtime reconfiguration allows the number of active partitions in the device and assignment of ports to
partitions to be modified while the system is active. Runtime reconfiguration does not affect partitions
whose configuration is not modified.
Partitioning is described in detail in Chapter 6, Switch Partitions.

Dynamic Reconfiguration

The PES64H16G2 supports two forms of dynamic reconfiguration. The first is reconfiguration of the
ports associated with a switch partition. The second is reconfiguration of the operating mode of a port. Parti-
tion and port reconfiguration may be initiated by software executing on a root or SMBus master.
Dynamic reconfiguration of the operating mode of a port or partition configuration is described in section
Port Operating Mode Change on page 6-7.
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