DDI_SLAVEONLY(9F) Kernel Functions for Drivers DDI_SLAVEONLY(9F)

ddi_slaveonly - tell if a device is installed in a slave access only location

#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
int ddi_slaveonly(dev_info_t *dip);

illumos DDI specific (illumos DDI).

dip
A pointer to the device's dev_info structure.

The ddi_slaveonly() function tells the caller if the bus, or part of the bus that the device is installed on, does not permit the device to become a DMA master, that is, whether the device has been installed in a slave access only slot.

DDI_SUCCESS
The device has been installed in a slave access only location.

DDI_FAILURE

The device has not been installed in a slave access only location.

The ddi_slaveonly() function can be called from user, interrupt, or kernel context.

Writing Device Drivers
January 16, 2006 OmniOS