Altera Arria V Hard IP for PCI Express - Manual (Page 254)

17–32 Chapter 17: Testbench and Design Example
BFM Procedures and Functions
Arria V Hard IP for PCI Express December 2013 Altera Corporation
User Guide
ebfm_cfgwr_imm_nowt Procedure
The ebfm_cfgwr_imm_nowt procedure writes up to four bytes of data to the specified
configuration register. This procedure returns as soon as the VC interface module
accepts the transaction, allowing other writes to be issued in the interim. Use this
procedure only when successful completion status is expected.
Table 17–25. ebfm_cfgwr_imm_nowt Procedure
Location altpcietb_bfm_driver_rp.v
Syntax ebfm_cfgwr_imm_nowt(bus_num, dev_num, fnc_num, imm_regb_adr, regb_len, imm_data)
Arguments
bus_num PCI Express bus number of the target device.
dev_num PCI Express device number of the target device.
fnc_num Function number in the target device to be accessed.
regb_ad Byte-specific address of the register to be written.
regb_ln
Length, in bytes, of the data written. Maximum length is four bytes, The regb_ln the
regb_ad arguments cannot cross a DWORD boundary.
imm_data
Data to be written
This argument is reg [31:0] .
In both languages, the bits written depend on the length:
Length Bits Written
4 [31:0]
3 [23:0]
2 [15:0]
1 [7:0]