2.2 BSP Rel. 1.0 for PPMC-275 Programmer's Guide
2.2 BSP Rel. 1.0 for PPMC-275 Programmer's Guide
2.2 BSP Rel. 1.0 for PPMC-275 Programmer's Guide
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List of APIs API Call Reference<br />
int<br />
rxBuffSize<br />
unsigned int<br />
rxDescBaseAddr<br />
unsigned int<br />
rxBuffBaseAddr<br />
Size of Rx buffer<br />
Rx descriptors memory area base addr.<br />
Rx buffer memory area base addr.<br />
OUTPUT The routine updates the Ethernet port control struct with in<strong>for</strong>mation<br />
regarding the Rx descriptors and buffers.<br />
RETURN<br />
False If the given descriptors memory area is not aligned<br />
according to Ethernet SDMA specifications.<br />
True Otherwise.<br />
bool etherInitTxDescRing(ETH_PORT_INFO *pEthPortCtrl, ETH_QUEUE txQueue, int<br />
txDescNum,int txBuffSize,unsigned int txDescBaseAddr,unsigned int xBuffBaseAddr)<br />
This function prepares a Tx chained list of descriptors and packet<br />
buffers in a <strong>for</strong>m of a ring. The routine must be called after port<br />
initialization routine and be<strong>for</strong>e port start routine. The Ethernet<br />
SDMA engine uses CPU bus addresses to access the various<br />
devices in the system (i.e. DRAM). This function uses the ethernet<br />
struct 'virtual to physical' routine (set by the user) to set the ring<br />
with physical addresses.<br />
INPUT<br />
ETH_PORT_INFO<br />
*pEthPortCtrl<br />
ETH_QUEUE<br />
txQueue<br />
Ethernet Port Control struct.<br />
Number of Tx queue.<br />
int txDescNum Number of Tx descriptors<br />
int txBuffSize Size of Tx buffer<br />
unsigned int<br />
txDescBaseAddr<br />
Tx descriptors memory area base addr.<br />
5 - 38 VxWorks 5.5/Tornado <strong>2.2</strong> <strong>BSP</strong> <strong>Rel</strong>. <strong>1.0</strong> <strong>for</strong> <strong>PPMC</strong>-<strong>275</strong>
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