Altera Arria V Hard IP for PCI Express - Manual (Page 257)

Chapter 17: Testbench and Design Example 17–35
BFM Procedures and Functions
December 2013 Altera Corporation Arria V Hard IP for PCI Express
User Guide
ebfm_cfg_decode_bar Procedure
The ebfm_cfg_decode_bar procedure analyzes the information in the BAR table for
the specified BAR and returns details about the BAR attributes.
BFM Shared Memory Access Procedures
The following procedures and functions are in the Verilog HDL include file
altpcietb_bfm_driver.v
. These procedures and functions support accessing the BFM
shared memory.
Shared Memory Constants
The following constants are defined in altpcietb_bfm_driver.v. They select a data
pattern in the
shmem_fill and shmem_chk_ok routines. These shared memory
constants are all Verilog HDL type integer .
Table 17–29. ebfm_cfg_decode_bar Procedure
Location altpcietb_bfm_driver_rp.v
Syntax ebfm_cfg_decode_bar(bar_table, bar_num, log2_size, is_mem, is_pref, is_64b)
Arguments bar_table Address of the Endpoint bar_table structure in BFM shared memory.
bar_num BAR number to analyze.
log2_size
This argument is set by the procedure to the log base 2 of the size of the BAR. If the BAR is
not enabled, this argument will be set to 0.
is_mem
The procedure sets this argument to indicate if the BAR is a memory space BAR (1) or I/O
Space BAR (0).
is_pref
The procedure sets this argument to indicate if the BAR is a prefetchable BAR (1) or non-
prefetchable BAR (0).
is_64b
The procedure sets this argument to indicate if the BAR is a 64-bit BAR (1) or 32-bit BAR
(0). This is set to 1 only for the lower numbered BAR of the pair.
Table 17–30. Constants: Verilog HDL Type INTEGER
Constant Description
SHMEM_FILL_ZEROS Specifies a data pattern of all zeros
SHMEM_FILL_BYTE_INC Specifies a data pattern of incrementing 8-bit bytes (0x00, 0x01, 0x02, etc.)
SHMEM_FILL_WORD_INC Specifies a data pattern of incrementing 16-bit words (0x0000, 0x0001, 0x0002, etc.)
SHMEM_FILL_DWORD_INC
Specifies a data pattern of incrementing 32-bit dwords (0x00000000, 0x00000001,
0x00000002, etc.)
SHMEM_FILL_QWORD_INC
Specifies a data pattern of incrementing 64-bit qwords (0x0000000000000000,
0x0000000000000001, 0x0000000000000002, etc.)
SHMEM_FILL_ONE Specifies a data pattern of all ones