diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c
index 3b06e21..5a7f436 100644
--- a/lib/librte_eal/bsdapp/eal/eal.c
+++ b/lib/librte_eal/bsdapp/eal/eal.c
@@ -755,6 +755,8 @@ int rte_vfio_enable(const char *modname);
 int rte_vfio_is_enabled(const char *modname);
 int rte_vfio_noiommu_is_enabled(void);
 int rte_vfio_clear_group(int vfio_group_fd);
+int rte_vfio_dma_map(uint64_t vaddr, uint64_t iova, uint64_t len);
+int rte_vfio_dma_unmap(uint64_t vaddr, uint64_t iova, uint64_t len);
 
 int rte_vfio_setup_device(__rte_unused const char *sysfs_base,
 		      __rte_unused const char *dev_addr,
@@ -790,3 +792,17 @@ int rte_vfio_clear_group(__rte_unused int vfio_group_fd)
 {
 	return 0;
 }
+
+int
+rte_vfio_dma_map(uint64_t __rte_unused vaddr, __rte_unused uint64_t iova,
+		  __rte_unused uint64_t len)
+{
+	return -1;
+}
+
+int
+rte_vfio_dma_unmap(uint64_t __rte_unused vaddr, uint64_t __rte_unused iova,
+		    __rte_unused uint64_t len)
+{
+	return -1;
+}
diff --git a/lib/librte_eal/common/include/rte_vfio.h b/lib/librte_eal/common/include/rte_vfio.h
index e981a62..093c309 100644
--- a/lib/librte_eal/common/include/rte_vfio.h
+++ b/lib/librte_eal/common/include/rte_vfio.h
@@ -123,6 +123,45 @@ int rte_vfio_noiommu_is_enabled(void);
 int
 rte_vfio_clear_group(int vfio_group_fd);
 
+/**
+ * Map memory region for use with VFIO.
+ *
+ * @param vaddr
+ *   Starting virtual address of memory to be mapped.
+ *
+ * @param iova
+ *   Starting IOVA address of memory to be mapped.
+ *
+ * @param len
+ *   Length of memory segment being mapped.
+ *
+ * @return
+ *   0 if success.
+ *   -1 on error.
+ */
+int
+rte_vfio_dma_map(uint64_t vaddr, uint64_t iova, uint64_t len);
+
+
+/**
+ * Unmap memory region from VFIO.
+ *
+ * @param vaddr
+ *   Starting virtual address of memory to be unmapped.
+ *
+ * @param iova
+ *   Starting IOVA address of memory to be unmapped.
+ *
+ * @param len
+ *   Length of memory segment being unmapped.
+ *
+ * @return
+ *   0 if success.
+ *   -1 on error.
+ */
+int
+rte_vfio_dma_unmap(uint64_t vaddr, uint64_t iova, uint64_t len);
+
 #endif /* VFIO_PRESENT */
 
 #endif /* _RTE_VFIO_H_ */
diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.c b/lib/librte_eal/linuxapp/eal/eal_vfio.c
index 5192763..8fe8984 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.c
@@ -22,17 +22,35 @@
 static struct vfio_config vfio_cfg;
 
 static int vfio_type1_dma_map(int);
+static int vfio_type1_dma_mem_map(int, uint64_t, uint64_t, uint64_t, int);
 static int vfio_spapr_dma_map(int);
 static int vfio_noiommu_dma_map(int);
+static int vfio_noiommu_dma_mem_map(int, uint64_t, uint64_t, uint64_t, int);
 
 /* IOMMU types we support */
 static const struct vfio_iommu_type iommu_types[] = {
 	/* x86 IOMMU, otherwise known as type 1 */
-	{ RTE_VFIO_TYPE1, "Type 1", &vfio_type1_dma_map},
+	{
+		.type_id = RTE_VFIO_TYPE1,
+		.name = "Type 1",
+		.dma_map_func = &vfio_type1_dma_map,
+		.dma_user_map_func = &vfio_type1_dma_mem_map
+	},
 	/* ppc64 IOMMU, otherwise known as spapr */
-	{ RTE_VFIO_SPAPR, "sPAPR", &vfio_spapr_dma_map},
+	{
+		.type_id = RTE_VFIO_SPAPR,
+		.name = "sPAPR",
+		.dma_map_func = &vfio_spapr_dma_map,
+		.dma_user_map_func = NULL
+		// TODO: work with PPC64 people on enabling this, window size!
+	},
 	/* IOMMU-less mode */
-	{ RTE_VFIO_NOIOMMU, "No-IOMMU", &vfio_noiommu_dma_map},
+	{
+		.type_id = RTE_VFIO_NOIOMMU,
+		.name = "No-IOMMU",
+		.dma_map_func = &vfio_noiommu_dma_map,
+		.dma_user_map_func = &vfio_noiommu_dma_mem_map
+	},
 };
 
 int
@@ -333,9 +351,10 @@ rte_vfio_setup_device(const char *sysfs_base, const char *dev_addr,
 		 */
 		if (internal_config.process_type == RTE_PROC_PRIMARY &&
 				vfio_cfg.vfio_active_groups == 1) {
+			const struct vfio_iommu_type *t;
+
 			/* select an IOMMU type which we will be using */
-			const struct vfio_iommu_type *t =
-				vfio_set_iommu_type(vfio_cfg.vfio_container_fd);
+			t = vfio_set_iommu_type(vfio_cfg.vfio_container_fd);
 			if (!t) {
 				RTE_LOG(ERR, EAL,
 					"  %s failed to select IOMMU type\n",
@@ -353,6 +372,8 @@ rte_vfio_setup_device(const char *sysfs_base, const char *dev_addr,
 				rte_vfio_clear_group(vfio_group_fd);
 				return -1;
 			}
+
+			vfio_cfg.vfio_iommu_type = t;
 		}
 	}
 
@@ -665,13 +686,54 @@ vfio_get_group_no(const char *sysfs_base,
 }
 
 static int
+vfio_type1_dma_mem_map(int vfio_container_fd, uint64_t vaddr, uint64_t iova,
+		uint64_t len, int do_map)
+{
+	struct vfio_iommu_type1_dma_map dma_map;
+	struct vfio_iommu_type1_dma_unmap dma_unmap;
+	int ret;
+
+	if (do_map != 0) {
+		memset(&dma_map, 0, sizeof(dma_map));
+		dma_map.argsz = sizeof(struct vfio_iommu_type1_dma_map);
+		dma_map.vaddr = vaddr;
+		dma_map.size = len;
+		dma_map.iova = iova;
+		dma_map.flags = VFIO_DMA_MAP_FLAG_READ |
+				VFIO_DMA_MAP_FLAG_WRITE;
+
+		ret = ioctl(vfio_container_fd, VFIO_IOMMU_MAP_DMA, &dma_map);
+		if (ret) {
+			RTE_LOG(ERR, EAL, "  cannot set up DMA remapping, error %i (%s)\n",
+				errno, strerror(errno));
+				return -1;
+		}
+
+	} else {
+		memset(&dma_unmap, 0, sizeof(dma_unmap));
+		dma_unmap.argsz = sizeof(struct vfio_iommu_type1_dma_unmap);
+		dma_unmap.size = len;
+		dma_unmap.iova = iova;
+
+		ret = ioctl(vfio_container_fd, VFIO_IOMMU_UNMAP_DMA,
+				&dma_unmap);
+		if (ret) {
+			RTE_LOG(ERR, EAL, "  cannot clear DMA remapping, error %i (%s)\n",
+					errno, strerror(errno));
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static int
 vfio_type1_dma_map(int vfio_container_fd)
 {
-	int i, ret;
+	int i;
 
 	/* map all DPDK segments for DMA. use 1:1 PA to IOVA mapping */
 	for (i = 0; i < RTE_MAX_MEMSEG_LISTS; i++) {
-		struct vfio_iommu_type1_dma_map dma_map;
 		struct rte_memseg_list *msl;
 		struct rte_fbarray *arr;
 		int ms_idx, next_idx;
@@ -697,23 +759,9 @@ vfio_type1_dma_map(int vfio_container_fd)
 			len = ms->hugepage_sz;
 			hw_addr = ms->iova;
 
-			memset(&dma_map, 0, sizeof(dma_map));
-			dma_map.argsz = sizeof(struct vfio_iommu_type1_dma_map);
-			dma_map.vaddr = addr;
-			dma_map.size = len;
-			dma_map.iova = hw_addr;
-			dma_map.flags = VFIO_DMA_MAP_FLAG_READ |
-					VFIO_DMA_MAP_FLAG_WRITE;
-
-			ret = ioctl(vfio_container_fd, VFIO_IOMMU_MAP_DMA,
-					&dma_map);
-
-			if (ret) {
-				RTE_LOG(ERR, EAL, "  cannot set up DMA remapping, "
-						  "error %i (%s)\n", errno,
-						  strerror(errno));
+			if (vfio_type1_dma_mem_map(vfio_container_fd, addr,
+					hw_addr, len, 1))
 				return -1;
-			}
 		}
 	}
 
@@ -865,6 +913,49 @@ vfio_noiommu_dma_map(int __rte_unused vfio_container_fd)
 	return 0;
 }
 
+static int
+vfio_noiommu_dma_mem_map(int __rte_unused vfio_container_fd,
+			 uint64_t __rte_unused vaddr,
+			 uint64_t __rte_unused iova, uint64_t __rte_unused len,
+			 int __rte_unused do_map)
+{
+	/* No-IOMMU mode does not need DMA mapping */
+	return 0;
+}
+
+static int
+vfio_dma_mem_map(uint64_t vaddr, uint64_t iova, uint64_t len, int do_map)
+{
+	const struct vfio_iommu_type *t = vfio_cfg.vfio_iommu_type;
+
+	if (!t) {
+		RTE_LOG(ERR, EAL, "  VFIO support not initialized\n");
+		return -1;
+	}
+
+	if (!t->dma_user_map_func) {
+		RTE_LOG(ERR, EAL,
+			"  VFIO custom DMA region maping not supported by IOMMU %s\n",
+			t->name);
+		return -1;
+	}
+
+	return t->dma_user_map_func(vfio_cfg.vfio_container_fd, vaddr, iova,
+			len, do_map);
+}
+
+int
+rte_vfio_dma_map(uint64_t vaddr, uint64_t iova, uint64_t len)
+{
+	return vfio_dma_mem_map(vaddr, iova, len, 1);
+}
+
+int
+rte_vfio_dma_unmap(uint64_t vaddr, uint64_t iova, uint64_t len)
+{
+	return vfio_dma_mem_map(vaddr, iova, len, 0);
+}
+
 int
 rte_vfio_noiommu_is_enabled(void)
 {
@@ -897,4 +988,20 @@ rte_vfio_noiommu_is_enabled(void)
 	return c == 'Y';
 }
 
+#else
+
+int
+rte_vfio_dma_map(uint64_t __rte_unused vaddr, __rte_unused uint64_t iova,
+		  __rte_unused uint64_t len)
+{
+	return -1;
+}
+
+int
+rte_vfio_dma_unmap(uint64_t __rte_unused vaddr, uint64_t __rte_unused iova,
+		    __rte_unused uint64_t len)
+{
+	return -1;
+}
+
 #endif
diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.h b/lib/librte_eal/linuxapp/eal/eal_vfio.h
index 8059577..b68703e 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.h
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.h
@@ -19,6 +19,7 @@
 
 #ifdef VFIO_PRESENT
 
+#include <stdint.h>
 #include <linux/vfio.h>
 
 #define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU
@@ -110,6 +111,7 @@ struct vfio_config {
 	int vfio_enabled;
 	int vfio_container_fd;
 	int vfio_active_groups;
+	const struct vfio_iommu_type *vfio_iommu_type;
 	struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
 };
 
@@ -119,9 +121,18 @@ struct vfio_config {
  * */
 typedef int (*vfio_dma_func_t)(int);
 
+/* Custom memory region DMA mapping function prototype.
+ * Takes VFIO container fd, virtual address, phisical address, length and
+ * operation type (0 to unmap 1 for map) as a parameters.
+ * Returns 0 on success, -1 on error.
+ **/
+typedef int (*vfio_dma_user_func_t)(int fd, uint64_t vaddr, uint64_t iova,
+		uint64_t len, int do_map);
+
 struct vfio_iommu_type {
 	int type_id;
 	const char *name;
+	vfio_dma_user_func_t dma_user_map_func;
 	vfio_dma_func_t dma_map_func;
 };
 
