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Map an interrupt pin to an IRQ
#include <hw/pci.h>
int pci_map_irq( unsigned bus,
unsigned dev_func,
short intno,
short intpin );
- 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).
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
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. |
- 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.
QNX Neutrino
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()
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