P4080 PCIe Adapter SDK User Guide Production Release

Freescale Semiconductor
o pkt_drv_process_command_ring(): Poll for Command enqueues by the host driver
to the Tx Command Ring. Commands are dequeued from the ring and appropriate
handlers invoked for command processing. Examples of hardware function driver
commands sent by the host include Hardware Function Driver load and unload. For
the Ethernet Hardware Function, Frame Queues are also initialized by the handlers
invoked as a result of command requests from Host Packet Driver.
o pkt_drv_host_poll():_Poll for Packet enqueues by host driver to the host Tx ring of
the core. Packets are dequeued from the Tx ring and enqueued to the Tx FQ as
described in the transmit flow in Section 4.5
o dma_channel_poll(): Poll for DMA completions in DMA chain.
o qman_poll(): Poll for received packets from the qman software portal. Packets are
enqueued to the corresponding host Rx ring and MSI asserted to the corresponding
core. This is described in the receive flow of Section 4.6
o Poll for DMA completions in DMA chain.
o bman_poll(): Poll for BMan driver notifications to the Packet process application.
o Poll for DMA completions in DMA chain.
The worker threads running on other cores execute the following tasks:
Initializing the bman/qman portals for the core
Running the packet processing poll loop that does:
o pkt_drv_host_poll():Poll for packet enqueues by host driver to the host Tx ring of
the core. Packets are dequeued from the Tx ring and enqueued to the Tx FQ as
described in the transmit flow in Section 4.5
o dma_channel_poll(): Poll for DMA completions in DMA chain.
o qman_poll(): Poll for received packets from the qman software portal. Packets are
enqueued to the corresponding host Rx ring and MSI asserted to the corresponding
core. This is described in the receive flow of Section 4.6
o Poll for DMA completions in DMA chain.
o bman_poll(): Poll for BMan driver notifications to the Packet process application.
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