Altera Stratix V Avalon-ST Bedienungsanleitung Seite 235

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Figure 17-4: 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.
17-24
Root Port BFM
UG-01097_avst
2014.12.15
Altera Corporation
Testbench and Design Example
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