Intel IXP2400, Руководство пользователя, Страница: 315 / 320

Development Tools User’s Guide 315
Intel
®
IXP2400/IXP2800 Network Processors
SPI4 Bus Functional Model
E.3.2 Simulation Control
The simulation control functions are:
•
spi4_set_device_stop_control (see Section E.3.2.1 )
•
spi4_set_port_stop_control (see Section E.3.2.1 )
•
spi4_set_sim_options (see Section E.3.2.2 )
E.3.2.1 spi4_set_X_stop_control
The
spi4_set_X_stop_control
sets simulation control over the specified spi4 device/port.
int spi4_set_device_stop_control (int device_id,
int stop_type,
int num_packets)
int spi4_set_port_stop_control (int device_id,
int port_num,
int stop_type,
int num_packets)
where:
device_id : unique device id for each device
port_num port in the specified device
stop_type 0: no stop-control
1: stop on sending X packets to IXP/MSF
2: stop on receiving X packets from IXP/MSF
num_packets number of packets received/transmitted for the stop condition to be true
E.3.2.2 spi4_set_sim_options
The
spi4_set_sim_options
sets simulation control over:
•
Running in unbounded mode - spi4 mode at full-bandwidth of IXP/MSF bus.
•
Ignoring the spi4_bfm receive buffer overflow.
•
Ignoring the spi4_bfm transmit buffer underflow.
int spi4_set_sim_options (int run_unbounded,
int ignore_rx_buffer_overflow,
int ignore_tx_buffer_underflow)
where:
run_unbounded 1: run unbounded mode otherwise run normal mode
ignore_rx_buffer_overflow 1: ignore spi4_bfm rx FIFO overflow
ignore_tx_buffer_underflow 1: ignore spi4_bfm tx FIFO underflow