+/*
+ * All device has iova as va
+ */
+static inline int
+fslmc_all_device_support_iova(void)
+{
+ int ret = 0;
+ struct rte_dpaa2_device *dev;
+ struct rte_dpaa2_driver *drv;
+
+ TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
+ TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
+ ret = rte_fslmc_match(drv, dev);
+ if (ret)
+ continue;
+ /* if the driver is not supporting IOVA */
+ if (!(drv->drv_flags & RTE_DPAA2_DRV_IOVA_AS_VA))
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/*
+ * Get iommu class of DPAA2 devices on the bus.
+ */
+static enum rte_iova_mode
+rte_dpaa2_get_iommu_class(void)
+{
+ bool is_vfio_noiommu_enabled = 1;
+ bool has_iova_va;
+
+ if (TAILQ_EMPTY(&rte_fslmc_bus.device_list))
+ return RTE_IOVA_DC;
+
+#ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
+ return RTE_IOVA_PA;
+#endif
+
+ /* check if all devices on the bus support Virtual addressing or not */
+ has_iova_va = fslmc_all_device_support_iova();
+
+#ifdef VFIO_PRESENT
+ is_vfio_noiommu_enabled = rte_vfio_noiommu_is_enabled() == true ?
+ true : false;
+#endif
+
+ if (has_iova_va && !is_vfio_noiommu_enabled)
+ return RTE_IOVA_VA;
+
+ return RTE_IOVA_PA;
+}
+
+static int
+fslmc_bus_plug(struct rte_device *dev __rte_unused)
+{
+ /* No operation is performed while plugging the device */
+ return 0;
+}
+
+static int
+fslmc_bus_unplug(struct rte_device *dev __rte_unused)
+{
+ /* No operation is performed while unplugging the device */
+ return 0;
+}
+
+static void *
+fslmc_bus_dev_iterate(const void *start, const char *str,
+ const struct rte_dev_iterator *it __rte_unused)
+{
+ const struct rte_dpaa2_device *dstart;
+ struct rte_dpaa2_device *dev;
+ char *dup, *dev_name = NULL;
+
+ if (str == NULL) {
+ DPAA2_BUS_DEBUG("No device string");
+ return NULL;
+ }
+
+ /* Expectation is that device would be name=device_name */
+ if (strncmp(str, "name=", 5) != 0) {
+ DPAA2_BUS_DEBUG("Invalid device string (%s)\n", str);
+ return NULL;
+ }
+
+ /* Now that name=device_name format is available, split */
+ dup = strdup(str);
+ dev_name = dup + strlen("name=");
+
+ if (start != NULL) {
+ dstart = RTE_DEV_TO_FSLMC_CONST(start);
+ dev = TAILQ_NEXT(dstart, next);
+ } else {
+ dev = TAILQ_FIRST(&rte_fslmc_bus.device_list);
+ }
+
+ while (dev != NULL) {
+ if (strcmp(dev->device.name, dev_name) == 0) {
+ free(dup);
+ return &dev->device;
+ }
+ dev = TAILQ_NEXT(dev, next);
+ }
+
+ free(dup);
+ return NULL;
+}
+