pci_irq_routing_options()

Retrieve PCI IRQ routing information

Synopsis:

#include <hw/pci.h>

int pci_irq_routing_options( 
                    IRQRoutingOptionsBuffer * buf, 
                    uint32_t * irq );

Library:

libc

Description:

The pci_irq_routing_options() function returns the following:

PCI interrupt routing options available on the system motherboard
the current state of interrupts that are currently exclusively assigned to PCI.

Routing information is returned in a data buffer that contains an IRQ routing for each PCI device or slot.

The layout for the IRQ Routing Options Buffer can be found in PCI BIOS SPECIFICATION Revision 2.1. It can be obtained from the PCI Special Interest Group at http://pcisig.com/.

Returns:

PCI_SUCCESS: Success.

Classification:

QNX 6

Safety:
Cancellation point	Yes
Interrupt handler	No
Signal handler	Yes
Thread	Yes

pci_attach(), pci_attach_device(), pci_detach(), pci_detach_device(), pci_find_class(), pci_find_device(), pci_present(), pci_read_config(), pci_read_config8(), pci_read_config16(), pci_read_config32(), pci_rescan_bus(), pci_write_config(), pci_write_config8(), pci_write_config16(), pci_write_config32()