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#include <sys/types.h> #include <sys/conf.h> #include <sys/ddi.h> #include <sys/sunddi.h> int ddi_intr_get_pri(ddi_intr_handle_t h, uint_t *prip);
int ddi_intr_set_pri(ddi_intr_handle_t h, uint_t pri);
Solaris DDI specific (Solaris DDI).
ddi_intr_get_pri() h
DDI interrupt handle
Pointer to the priority returned for this handle
ddi_intr_set_pri() h
DDI interrupt handle
Contains the priority to be set
The ddi_intr_get_pri() function returns the current priority of the interrupt handle h of a given device. Upon a successful return, prip points to a small integer value, typically in the DDI_INTR_PRI_MIN...DDI_INTR_PRI_MAX range, that represents the current software priority setting for the interrupt. See <sys/ddi_intr.h> for values of DDI_INTR_PRI_MIN or DDI_INTR_PRI_MAX.
The ddi_intr_get_pri() function can be called any time, even if the driver adds an interrupt handler for the interrupt specification.
The software priority returned from ddi_intr_get_pri() can be used in calls to mutex_init() and rw_init().
The ddi_intr_set_pri() function sets the priority pri of the interrupt handle h of a given device. The function validates that the argument is within the supported range.
The ddi_intr_set_pri() function can only be called prior to adding the interrupt handler or when an interrupt handler is unassigned. DDI_FAILURE is returned in all other cases.
The ddi_intr_get_pri() and ddi_intr_set_pri() functions return: DDI_SUCCESS
On success.
On encountering invalid input parameters.
On any implementation specific failure.
On device not supporting operation.
The ddi_intr_get_pri() and ddi_intr_set_pri() functions can be called from kernel non-interrupt context.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Interface Stability Committed |
attributes(5), ddi_intr_alloc(9F), ddi_intr_enable(9F), mutex_init(9F), rw_init(9F)
Writing Device Drivers
The priority returned from ddi_intr_get_pri() should be typecast by calling the DDI_INTR_PRI macro before passing it onto mutex_init(9F).
Consumers of these interfaces should verify that the return value is not equal to DDI_SUCCESS. Incomplete checking for failure codes could result in inconsistent behavior among platforms.