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EMAC_Core_Config. More...
#include <csl_emac.h>
Data Fields | |
| EMAC_Pkt *(* | pfcbGetPacket )(Handle hApplication) |
| void(* | pfcbFreePacket )(Handle hApplication, EMAC_Pkt *pPacket) |
| EMAC_Pkt *(* | pfcbRxPacket )(Handle hApplication, EMAC_Pkt *pPacket) |
| void(* | pfcbStatus )(Handle hApplication) |
| void(* | pfcbStatistics )(Handle hApplication) |
| Uint8 | DescBase |
| EMAC_ChannelInfo | ChannelInfo |
| Uint8 | NumOfMacAddrs |
| EMAC_AddrConfig ** | MacAddr |
| Uint32 | RxMaxPktPool |
EMAC_Core_Config.
The EMAC_Core_Config structure defines configurations specific to individual cores when the EMAC device is operating. It is passed to the device when the device is initialized for individual cores (EMAC_coreInit()), and remains in effect until the device is de-initialized for the corresponding cores (EMAC_coreDeInit()).
The following is a short description of the configuration fields:
A list of callback functions is used to register callback functions with a particular core the EMAC peripheral instance. Callback functions are used by EMAC to communicate with the application. These functions are REQUIRED for operation. The same callback table can be used for multiple cores and/or multiple driver instances.
pfcbGetPacket - Called by EMAC to get a free packet buffer from the application layer for receive data. This function should return NULL is no free packets are available. The size of the packet buffer must be large enough to accommodate a full sized packet (1514 or 1518 depending on the EMAC_CONFIG_MODEFLG_RXCRC flag), plus any application buffer padding (DataOffset).
pfcbFreePacket - Called by EMAC to give a free packet buffer back to the application layer. This function is used to return transmit packets. Note that at the time of the call, structure fields other than pDataBuffer and BufferLen are in an undefined state.
pfcbRxPacket - Called to give a received data packet to the application layer. The applicaiton must accept the packet. When the application is finished with the packet, it can return it to its own free queue. This function also returns a pointer to a free packet to replace the received packet on the EMAC free list. It returns NULL when no free packets are available. The return packet is the same as would be returned by pfcbGetPacket. Thus if a newly received packet is not desired, it can simply be returned to EMAC via the return value.
pfcbStatus - Called to indicate to the application that it should call EMAC_getStatus() to read the current device status. This call is made when device status changes.
pfcbStatistics - Called to indicate to the application that it should call EMAC_getStatistics() to read the current Ethernet statistics. Called when the statistic counters are to the point of overflow.
The hApplication calling argument is the application's handle as supplied to the EMAC device for individual cores in the EMAC_coreInit() function.
DescBase - Descriptor memory selction to place the EMAC descriptors
ChannelInfo - Tx and Rx Channel information to be used by the core
NumOfMacAddrs - Number of MAC addresses to be assigned to the core
MacAddr - Device MAC addresses for the core
RxMaxPktPool - Max Rx packet buffers to get from pool (Must be in the range of 8 to 192)
Tx and Rx Channel information for individual cores to use
This member is for descriptor memory selction to place the EMAC descriptors in CPPI RAM or L2 RAM or DDR memory
Mac Addresses structure
Number of MAC addresses to be assigned for individual cores
| void(* _EMAC_Core_Config::pfcbFreePacket)(Handle hApplication, EMAC_Pkt *pPacket) |
Free packet call back
| EMAC_Pkt*(* _EMAC_Core_Config::pfcbGetPacket)(Handle hApplication) |
Get packet call back
| EMAC_Pkt*(* _EMAC_Core_Config::pfcbRxPacket)(Handle hApplication, EMAC_Pkt *pPacket) |
Receive packet call back
| void(* _EMAC_Core_Config::pfcbStatistics)(Handle hApplication) |
Get statistics call back
| void(* _EMAC_Core_Config::pfcbStatus)(Handle hApplication) |
Get status call back
Max Rx packet buffers to get from pool