Altera Mentor Verification IP Altera Edition AMBA AXI4-Lite - Manual (Page 192)

Mentor Verification IP AE AXI4-Lite User Guide, V10.3 192
VHDL Master BFM
execute_transaction()
April 2014
execute_transaction()
This procedure executes a master transaction that is uniquely identified by the transaction_id
argument, previously created with either the
create_write_transaction() or procedure. A
transaction can be blocking (default) or nonblocking, based on the setting of the transaction
operation_mode field.
The results of execute_transaction() for write transactions varies based on how write transaction
fields are set. If the transaction gen_write_strobes field is set, execute_transaction ()
automatically corrects any previously set write_strobes field array elements. However, if the
gen_write_strobes field is not set, then any previously assigned write_strobes field array
elements will be passed onto the WSTRB protocol signals, which can result in a protocol
violation if not correctly set. Refer to “
Automatic Correction of Byte Lane Strobes ” on page 146
for more details.
If the write_data_mode field for a write transaction is set to AXI4_DATA_WITH_ADDRESS ,
execute_transaction () calls the execute_write_addr_phase() and execute_write_data_phase()
procedures simultaneously; otherwise, execute_write_data_phase() is called after
execute_write_addr_phase() so that the write data beat occurs after the write address phase
(default). It then calls the get_write_response_phase() procedure to complete the write
transaction.
For a read transaction, execute_transaction() calls the execute_read_addr_phase() procedure
followed by the get_read_data_phase() procedure to complete the read transaction
Prototype procedure execute_transaction
(
transaction_id : in integer;
bfm_id : in integer;
path_id : in axi4_path_t; --optional
signal tr_if : inout axi4_vhd_if_struct_t
);
Arguments transaction_id Transaction identifier. Refer to “ Overloaded Procedure
Common Arguments ” on page 151 for more details.
bfm_id BFM identifier. Refer to “ Overloaded Procedure
Common Arguments ” on page 151 for more details.
path_id (Optional) Parallel process path identifier:
AXI4_PATH_0
AXI4_PATH_1
AXI4_PATH_2
AXI4_PATH_3
AXI4_PATH_4
Refer to “ Overloaded Procedure Common Arguments ”
on page 151 for more details.
tr_if Transaction signal interface. Refer to “ Overloaded
Procedure Common Arguments ” on page 151 for more
details.
Returns None