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Intel
IXP2400/IXP2800 Network Processors
SPI4 Bus Functional Model
E.3.3
Flow Control
The flow control functions are:
•
spi4_set_rx_fc_info (see
•
spi4_set_tx_fc_info (see
•
spi4_set_rx_calendar (see
•
spi4_set_tx_calendar (see
E.3.3.1
spi4_set_rx_fc_info/spi4_set_tx_fc_info/spi4_set_rx_calendar /
spi4_set_tx_calendar
The spi4_set_rx_fc_info/spi4_set_tx_fc_info/
spi4_set_tx_calendarrspi4_set_tx_calendar sets the flow control information.
The parameters specified in these three functions are also supported by the
spi4_set_device_rx_param/spi4_set_device_tx_param.
where:
device_id_str
nBurst1
nBurst2
nMaxiFifoInterval
nHWM
nPort Addr
316
Section
E.3.3.1)
Section
E.3.3.1)
Section
E.3.3.1)
Section
E.3.3.1)
int spi4_set_rx_fc_info(char *device_id_str,
int nBurst1
int nBurst2
int nMaxiFifoInterval,
int nHWM
int nPortAddr)
int spi4_set_tx_fc_info(char *device_id_str,
int nBurst1
int nBurst2
int nMaxiFifoInterval,
int nHWM
int nPortAddr)
string representation of device_id
Rx/Tx SPI4 Flow Control MaxBurst1 (16-byte/unit)
Rx/Tx SPI4 Flow Control MaxBurst2 (16-byte/unit)
Tx SPI4 Flow Control time interval FIFO_MAX_T (msf cycle)
Rx/Tx High Water Mark
physical port address
int spi4_set_rx_calendar(int device_id,
int calendar_length
int index
int calendar
int spi4_set_tx_calendar(int device_id,
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