mempool/dpaa2: map external memory with VFIO

[dpdk.git] / drivers / bus / fslmc / fslmc_vfio.c

diff --git a/drivers/bus/fslmc/fslmc_vfio.c b/drivers/bus/fslmc/fslmc_vfio.c
index 1383af4..247b2a4 100644 (file)
--- a/drivers/bus/fslmc/fslmc_vfio.c
+++ b/drivers/bus/fslmc/fslmc_vfio.c
@@ -358,6 +358,45 @@ fslmc_dmamap_seg(const struct rte_memseg_list *msl __rte_unused,
        return ret;
 }
 
+int
+rte_fslmc_vfio_mem_dmamap(uint64_t vaddr, uint64_t iova, uint64_t size)
+{
+       int ret;
+       struct fslmc_vfio_group *group;
+       struct vfio_iommu_type1_dma_map dma_map = {
+               .argsz = sizeof(struct vfio_iommu_type1_dma_map),
+               .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
+       };
+
+       if (fslmc_iommu_type == RTE_VFIO_NOIOMMU) {
+               DPAA2_BUS_DEBUG("Running in NOIOMMU mode");
+               return 0;
+       }
+
+       /* SET DMA MAP for IOMMU */
+       group = &vfio_group;
+       if (!group->container) {
+               DPAA2_BUS_ERR("Container is not connected");
+               return -1;
+       }
+
+       dma_map.size = size;
+       dma_map.vaddr = vaddr;
+       dma_map.iova = iova;
+
+       DPAA2_BUS_DEBUG("VFIO dmamap 0x%llx:0x%llx, size 0x%llx\n",
+                       dma_map.vaddr, dma_map.iova, dma_map.size);
+       ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
+                   &dma_map);
+       if (ret) {
+               printf("Unable to map DMA address (errno = %d)\n",
+                       errno);
+               return ret;
+       }
+
+       return 0;
+}
+
 int rte_fslmc_vfio_dmamap(void)
 {
        int i = 0, ret;