+static int fslmc_map_dma(uint64_t vaddr, rte_iova_t iovaddr, size_t len);
+static int fslmc_unmap_dma(uint64_t vaddr, rte_iova_t iovaddr, size_t len);
+
+static void
+fslmc_memevent_cb(enum rte_mem_event type, const void *addr, size_t len,
+ void *arg __rte_unused)
+{
+ struct rte_memseg_list *msl;
+ struct rte_memseg *ms;
+ size_t cur_len = 0, map_len = 0;
+ uint64_t virt_addr;
+ rte_iova_t iova_addr;
+ int ret;
+
+ msl = rte_mem_virt2memseg_list(addr);
+
+ while (cur_len < len) {
+ const void *va = RTE_PTR_ADD(addr, cur_len);
+
+ ms = rte_mem_virt2memseg(va, msl);
+ iova_addr = ms->iova;
+ virt_addr = ms->addr_64;
+ map_len = ms->len;
+
+ DPAA2_BUS_DEBUG("Request for %s, va=%p, "
+ "virt_addr=0x%" PRIx64 ", "
+ "iova=0x%" PRIx64 ", map_len=%zu",
+ type == RTE_MEM_EVENT_ALLOC ?
+ "alloc" : "dealloc",
+ va, virt_addr, iova_addr, map_len);
+
+ /* iova_addr may be set to RTE_BAD_IOVA */
+ if (iova_addr == RTE_BAD_IOVA) {
+ DPAA2_BUS_DEBUG("Segment has invalid iova, skipping\n");
+ cur_len += map_len;
+ continue;
+ }
+
+ if (type == RTE_MEM_EVENT_ALLOC)
+ ret = fslmc_map_dma(virt_addr, iova_addr, map_len);
+ else
+ ret = fslmc_unmap_dma(virt_addr, iova_addr, map_len);
+
+ if (ret != 0) {
+ DPAA2_BUS_ERR("DMA Mapping/Unmapping failed. "
+ "Map=%d, addr=%p, len=%zu, err:(%d)",
+ type, va, map_len, ret);
+ return;
+ }
+
+ cur_len += map_len;
+ }
+
+ if (type == RTE_MEM_EVENT_ALLOC)
+ DPAA2_BUS_DEBUG("Total Mapped: addr=%p, len=%zu",
+ addr, len);
+ else
+ DPAA2_BUS_DEBUG("Total Unmapped: addr=%p, len=%zu",
+ addr, len);
+}
+
+static int
+fslmc_map_dma(uint64_t vaddr, rte_iova_t iovaddr __rte_unused, size_t len)