ddi_intr_get_pending(9F) Kernel Functions for Drivers ddi_intr_get_pending(9F)NAMEddi_intr_get_pending - get pending bit for a given interrupt
SYNOPSIS
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
int ddi_intr_get_pending(ddi_intr_handle_t h, int *pendingp);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
PARAMETERS
h DDI interrupt handle
pendingp Pointer to the pending capability returned for this
handle
DESCRIPTION
The ddi_intr_get_pending() function returns non-zero as the integer
pointed to by the pendingp argument if a corresponding interrupt is
pending. The corresponding interrupt handle h must already be allo‐
cated. The call succeeds if the device or host bridge supports the
ability to read the interrupt pending bits of its interrupts. The
driver should use ddi_intr_get_cap() function to see if the
DDI_INTR_FLAG_PENDING flag is returned to indicate that interrupts sup‐
port interrupt pending bits.
If the DDI_INTR_FLAG_PENDING capability is not supported,
ddi_intr_get_pending() returns DDI_ENOTSUP and zero in pendingp.
RETURN VALUES
The ddi_intr_get_pending() function returns:
DDI_SUCCESS On success.
DDI_EINVAL On encountering invalid input parameters.
DDI_FAILURE On any implementation specific failure.
DDI_ENOTSUP On device not supporting operation.
CONTEXT
The ddi_intr_get_pending() function can be called from either user or
kernel non-interrupt context.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Evolving │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOattributes(5), ddi_intr_block_enable(9F), ddi_intr_block_disable(9F),
ddi_intr_clr_mask(9F), ddi_intr_disable(9F), ddi_intr_enable(9F),
ddi_intr_set_mask(9F)
Writing Device Drivers
NOTES
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.
SunOS 5.10 07Apr 2005 ddi_intr_get_pending(9F)
