BSP Developer's Guide

VxWorks 5.5
BSP Developer’s Guide
pMblk
Passes a pointer to an mBlk structure containing the data you want to send.
For more information on how to setup an mBlk, see H.3.1 Setting Up and Using
a Memory Pool for Receive and Transmit Buffers, p.276.
Starting a Stopped but Loaded Driver: endStart( )
Your endStart( ) entry point should do whatever is necessary to make the driver
active. For example, it should register your device driver’s interrupt service
routine.Your endStart( ) must take the following form:
Status endStart
(
void* pCookie /* pointer to device-identifying END_OBJ structure */
)
This function should return OK or ERROR. If an error occurs, it should set errno.
The parameters are:
pCookie
Passes a pointer to the END_OBJ structure returned by endLoad( ).
However, your endStart( ) should probably include this pointer as a
parameter to the sysIntConnect( ) call that it uses to register your ISR. Your
ISR might not have any direct use for this END_OBJ pointer, but it should pass
it in to the driver entry point that handles task-level processing for packet
reception.
When it comes time to pass the packet up to the MUX, your driver must call
the MUX-supplied function referenced in pCookie.receiveRtn. See Providing
Network Device Abstraction: END_OBJ, p.283.
Stopping the Driver Without Unloading It: endStop( )
Your endStop( ) entry point can assume that the driver is already loaded and that
somebody has already called endLoad( ). Within your endStop( ), you should do
whatever is necessary to make the driver inactive without actually unloading the
driver. Your endStop( ) must take the following form:
STATUS endStop
(
void* pCookie /* pointer to a device-identifying END_OBJ structure */
)
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