DDI_INTR_GET_SUPPORTED_TYPES(9F) Kernel Functions for Drivers

NAME

ddi_intr_get_supported_types - return information on supported hardware
interrupt types

SYNOPSIS

#include <sys/types.h>
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>

int ddi_intr_get_supported_types(dev_info_t *dip, int *typesp);

INTERFACE LEVEL

illumos DDI specific (illumos DDI)

PARAMETERS

dip
Pointer to dev_info structure


typesp
Pointer to supported interrupt types

DESCRIPTION

The ddi_intr_get_supported_types() function retrieves the interrupt types
supported by a particular hardware device and by the system software.
Upon successful return, the supported types are returned as a bit mask in
the integer pointed to by the typesp argument. See <sys/ddi_intr.h> for a
list of interrupts that can be returned by a hardware device.


For PCI devices that support MSI and/or MSI-X based hardware, this
interface returns only the interrupt types that are supported by all the
hardware in the path to the hardware device.


An interrupt type is usable by the hardware device if it is returned by
the ddi_intr_get_supported_types() function. The device driver can be
programmed to use one of the returned interrupt types to receive hardware
interrupts.

RETURN VALUES

The ddi_intr_get_supported_types() function returns:

DDI_SUCCESS
On success.


DDI_EINVAL
On encountering invalid input parameters.


DDI_INTR_NOTFOUND
Returned when the hardware device is found not to
support any hardware interrupts.

CONTEXT

The ddi_intr_get_supported_types() function can be called from user or
kernel non-interrupt context.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+

SEE ALSO

pcmcia(4D), pci(5), sysbus(5), attributes(7), ddi_intr_add_handler(9F),
ddi_intr_alloc(9F), ddi_intr_enable(9F)


Writing Device Drivers

NOTES

The ddi_intr_get_supported_types() function can be called by the device
driver even at any time if the driver has added an interrupt handler for
a given interrupt type.


Soft interrupts are always usable and are not returned by this interface.


Any consumer of this interface should verify that the return value is not
equal to DDI_SUCCESS. Incomplete checking for failure codes could result
in inconsistent behavior among platforms.


April 7, 2005 DDI_INTR_GET_SUPPORTED_TYPES(9F)