PCIe subsystem supports the following
transactions:
- Memory Read/Write in
inbound/outbound direction in
Root
Complex
(RC)
and End Point (EP) modes.
- I/O Read/Write in outbound
direction in
RC
mode.
- Configuration Read/Write in
outbound direction in
RC
mode.
- Configuration Read/Write in
inbound direction in EP mode.
- Message Transactions for
interrupts and power management in
RC
and EP modes.
The following transactions are not
supported:
- Locked Read transactions and
associated messages.
- Inbound I/O Transaction Layer Packets (TLPs).
- User defined messages.