2.2 BSP Rel. 1.0 for PPMC-275 Programmer's Guide

API Call Reference List of APIs
Software Modules
External Apis
void frcDbIntCtrlInit(void)
The Interrupt handler has a table which holds information on the
connected user ISR. An Interrupt generated by one of the doorbell
bits will result a search through this table in order to allocate the
generating interrupt cause. After the initiating interrupt cause is
identify, the ISR reside in the same table entry is executed. The
controller interface also includes interrupt control routines which
can enable/disable specific interrupts.
• VxDbIntCtrl.c
• VxDbIntCtrl.h
INPUT Not Applicable
This routines connects the drivers interrupt handler, to its corresponding
bits in the MV device main Interrupt Controller using
the gtIntConnect() routine. It is also cleans and masks interrupts.
OUTPUT The Doorbell cause & mask register are initialized (set to zero).
Driver's ISR are connected to the main cause register.
RETURNS Not Applicable
STATUS frcDbIntConnect(DB_CAUSE cause,VOIDFUNCPTR routine, int parameter, int prio)
DESCRIPTION This routine connects a specified user ISR to a specified Doorbell
interrupt cause. The ISR handler has its own user ISR array. The
connection is done by setting the desired routine and parameter in
the cause array (dbCauseArray[ ])
Check for existing connection for the cause bit in the table.
Connecting the user ISR by inserting the given parameters into
an entry according to the user ISR given priority.
INPUT
DB_CAUSE cause Doorbell interrupt cause. See SDMA_DB.
VxWorks 5.5/Tornado 2.2 BSP Rel. 1.0 for PPMC-275 5 - 135