+#define IRQ_SET_BUF_LEN (sizeof(struct vfio_irq_set) + sizeof(int))
+
+int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle,
+ uint32_t index)
+{
+ struct vfio_irq_set *irq_set;
+ char irq_set_buf[IRQ_SET_BUF_LEN];
+ int *fd_ptr, fd, ret;
+
+ /* Prepare vfio_irq_set structure and SET the IRQ in VFIO */
+ /* Give the eventfd to VFIO */
+ fd = eventfd(0, 0);
+ irq_set = (struct vfio_irq_set *)irq_set_buf;
+ irq_set->argsz = sizeof(irq_set_buf);
+ irq_set->count = 1;
+ irq_set->flags = VFIO_IRQ_SET_DATA_EVENTFD |
+ VFIO_IRQ_SET_ACTION_TRIGGER;
+ irq_set->index = index;
+ irq_set->start = 0;
+ fd_ptr = (int *)&irq_set->data;
+ *fd_ptr = fd;
+
+ ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
+ if (ret < 0) {
+ FSLMC_VFIO_LOG(ERR, "Unable to set IRQ in VFIO, ret: %d\n",
+ ret);
+ return -1;
+ }
+
+ /* Set the FD and update the flags */
+ intr_handle->fd = fd;
+ return 0;
+}
+