Visible to Intel only — GUID: dsu1456876861581
Ixiasoft
Visible to Intel only — GUID: dsu1456876861581
Ixiasoft
7.2.8. Port-Write Transactions
To test port-writes, the test performs some basic configuration of the port-write registers in the DUT and the sister_rio module. It then programs the DUT to transmit port-write request packets to the sister_rio module. The port-writes are received by the sister_rio module and retrieved by the test program.
The configuration enables the RX_PACKET_STORED interrupt in the sister_rio module. If this interrupt is enabled, the sister_rio module asserts its mnt_mnt_s_irq signal when the sister_rio module receives a Port-Write transaction and the payload can be retrieved. To enable the interrupt, the testbench calls the sister_sys_mnt_master_bfm read_write_cmd task.
Operation | Action |
---|---|
Places data into the TX_PORT_WRITE_BUFFER. | Write incrementing payload to registers at addresses 0x10210 to 0x1024C. |
Indicates to the DUT that Port-Write data is ready. | Write DESTINATION_ID = 0xCD or 0xCDCD, depending on the device ID width setting, and PACKET_READY = 0x1 to 0x10200. |
Waits for the sister_rio module to receive the port-write. | Monitor the sister_rio module mnt_mnt_s_irq signal. |
Verifies that the sister_rio module has the interrupt bit PACKET_STORED set. | Read register at address 0x10080. |
Retrieves the Port-Write payload from the sister_rio module and checks for data integrity. | Read registers at addresses 0x10260–0x1029C. |
Checks the sister_rio module Rx Port Write Status register for correct payload size | Read register at address 0x10254. |
Clears the PACKET_STORED interrupt in the sister_rio module | Write 1'b1 to bit 4 of register at address 0x10080. |
Waits for the next interrupt at the sister _rio module. | Monitor the sister_rio module mnt_mnt_s_irq signal. |