Altera Arria V Avalon-ST - Manual (Page 194)

Figure 16-4: Root Port BFM
BFM Shared Memory
(altpcietb_bfm_shmem
_common)
BFM Log Interface
(altpcietb_bfm_log
_common)
Root Port RTL Model (altpcietb_bfm_rp_top_x8_pipen1b)
IP Functional Simulation
Model of the Root
Port Interface
(altpcietb_bfm_driver_rp)
Avalon-ST Interface
(altpcietb_bfm_vc_intf)
Root Port BFM
BFM Read/Write Shared Request Procedures
BFM Configuration Procedures
BFM Request Interface
(altpcietb_bfm_req_intf_common)
The functionality of each of the modules included is explained below.
• BFM shared memory (
altpcietb_bfm_shmem_common Verilog HDL include file)—The Root Port BFM is
based on the BFM memory that is used for the following purposes:
• Storing data received with all completions from the PCI Express link.
• Storing data received with all write transactions received from the PCI Express link.
• Sourcing data for all completions in response to read transactions received from the PCI Express link.
• Sourcing data for most write transactions issued to the PCI Express link. The only exception is certain
BFM write procedures that have a four-byte field of write data passed in the call.
• Storing a data structure that contains the sizes of and the values programmed in the BARs of the
Endpoint.
A set of procedures is provided to read, write, fill, and check the shared memory from the BFM driver. For
details on these procedures, see BFM Shared Memory Access Procedures.
16-24 Root Port BFM
2014.12.15
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