pci_map_irq()

Map an interrupt pin to an IRQ

Synopsis:

#include <hw/pci.h>

int pci_map_irq( unsigned bus, 
                 unsigned dev_func, 
                 short intno, 
                 short intpin );

Arguments:

bus

The bus number of the device.

dev_func

The device or function number of the device. The device number is in bits 7 through 3, and the function number is in bits 2 through 0.

intno

The interrupt to be mapped (e.g. 0 - 15 on x86).

intpin

The PCI interrupt pin (0x0a - 0x0d).

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The pci_map_irq() function maps a PCI interrupt pin to a specific interrupt request (IRQ).

---

You must successfully call pci_attach() before calling any of the other PCI functions.

---

Returns:

PCI_SUCCESS

Success.

PCI_SET_FAILED

The PCI server was unable to map the intno/intpin.

PCI_UNSUPPORTED_FUNCTION

This function isn't supported.

-1

You haven't called pci_attach(), or the call to it failed.

Classification:

QNX Neutrino

See also:

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()