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

API Call Reference List of APIs
System Resource Usage
Restrictions
External Interface
System interrupt sources are connected to a GPP pin. Make sure
the GPP pin is configured to act as interrupt.
Interrupt acknowledgement is completed by the device driver that
triggered the interrupt (not by the System Interrupt Controller).
GPP pin descriptions Use the following macros as interrupt vectors intConnect routine
(located in pmc275.h file)
• CARRIER_INT0 Describes interrupt input from carrier card
(GPP pin 6)
• CARRIER_INT1 Describes interrupt input from carrier card
(GPP pin 7)
• WD_NMI Describe watchdog NMI interrupt (GPP pin 18)
• PHY0_INT Describes Interrupt from Ethernet PHY0 (GPP pin
12)
• PHY0_INT Describes Interrupt from Ethernet PHY0 (GPP pin
13)
PCI_INTA Describes PCI interrupt A (GPP pin 27)
PCI_INTB Describes PCI interrupt B (GPP pin 29)
PCI_INTC Describes PCI interrupt C (GPP pin 16)
PCI_INTD Describes PCI interrupt D (GPP pin 17)
Driver's API This driver provides function pointers to VxWorks, thus interrupt
control (Connect, Enable and Disable) is performed using the
VxWorks interface.
STATUS gtIntCtrlInit ()
DESCRIPTION This driver initializes the GPP Interrupt Controller and assigns the
VxWorks interrupt control routines pointers to the system interrupt
controller. This function is called in the system initialization
routine sysHwInit2() of sysLib.c.
VxWorks 5.5/Tornado 2.2 BSP Rel. 1.0 for PPMC-275 5 - 13