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From: Hemant Agrawal <hemant.agrawal@nxp.com>
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CC: <thomas.monjalon@6wind.com>, <bruce.richardson@intel.com>,
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Subject: [dpdk-dev] [PATCHv2 33/34] bus/fslmc: add support for dmamap to ARM
SMMU
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X-List-Received-Date: Mon, 19 Dec 2016 15:22:32 -0000
Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
drivers/bus/fslmc/fslmc_vfio.c | 97 ++++++++++++++++++++++++++++++++++++++++
drivers/bus/fslmc/fslmc_vfio.h | 1 +
drivers/net/dpaa2/dpaa2_ethdev.c | 2 +
3 files changed, 100 insertions(+)
diff --git a/drivers/bus/fslmc/fslmc_vfio.c b/drivers/bus/fslmc/fslmc_vfio.c
index 8d6a3eb..44cf3d1 100644
--- a/drivers/bus/fslmc/fslmc_vfio.c
+++ b/drivers/bus/fslmc/fslmc_vfio.c
@@ -77,8 +77,10 @@
static struct fslmc_vfio_group vfio_groups[VFIO_MAX_GRP];
static struct fslmc_vfio_container vfio_containers[VFIO_MAX_CONTAINERS];
static int container_device_fd;
+static uint32_t *msi_intr_vaddr;
void *(*mcp_ptr_list);
static uint32_t mcp_id;
+static int is_dma_done;
static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
{
@@ -148,6 +150,35 @@ static int vfio_connect_container(struct fslmc_vfio_group *vfio_group)
return 0;
}
+static int vfio_map_irq_region(struct fslmc_vfio_group *group)
+{
+ int ret;
+ unsigned long *vaddr = NULL;
+ struct vfio_iommu_type1_dma_map map = {
+ .argsz = sizeof(map),
+ .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
+ .vaddr = 0x6030000,
+ .iova = 0x6030000,
+ .size = 0x1000,
+ };
+
+ vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
+ PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
+ if (vaddr == MAP_FAILED) {
+ FSLMC_VFIO_LOG(ERR, "Unable to map region (errno = %d)", errno);
+ return -errno;
+ }
+
+ msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
+ map.vaddr = (unsigned long)vaddr;
+ ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
+ if (ret == 0)
+ return 0;
+
+ FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA fails (errno = %d)", errno);
+ return -errno;
+}
+
int vfio_dmamap_mem_region(uint64_t vaddr,
uint64_t iova,
uint64_t size)
@@ -170,6 +201,72 @@ int vfio_dmamap_mem_region(uint64_t vaddr,
}
return 0;
}
+
+int fslmc_vfio_dmamap(void)
+{
+ 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,
+ };
+
+ int i;
+ const struct rte_memseg *memseg;
+
+ if (is_dma_done)
+ return 0;
+ is_dma_done = 1;
+
+ for (i = 0; i < RTE_MAX_MEMSEG; i++) {
+ memseg = rte_eal_get_physmem_layout();
+ if (memseg == NULL) {
+ FSLMC_VFIO_LOG(ERR, "Cannot get physical layout.");
+ return -ENODEV;
+ }
+
+ if (memseg[i].addr == NULL && memseg[i].len == 0)
+ break;
+
+ dma_map.size = memseg[i].len;
+ dma_map.vaddr = memseg[i].addr_64;
+#ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
+ dma_map.iova = memseg[i].phys_addr;
+#else
+ dma_map.iova = dma_map.vaddr;
+#endif
+
+ /* SET DMA MAP for IOMMU */
+ group = &vfio_groups[0];
+
+ if (!group->container) {
+ FSLMC_VFIO_LOG(ERR, "Container is not connected ");
+ return -1;
+ }
+
+ FSLMC_VFIO_LOG(DEBUG, "-->Initial SHM Virtual ADDR %llX",
+ dma_map.vaddr);
+ FSLMC_VFIO_LOG(DEBUG, "-----> DMA size 0x%llX\n", dma_map.size);
+ ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA,
+ &dma_map);
+ if (ret) {
+ FSLMC_VFIO_LOG(ERR, "VFIO_IOMMU_MAP_DMA API"
+ "(errno = %d)", errno);
+ return ret;
+ }
+ FSLMC_VFIO_LOG(DEBUG, "-----> dma_map.vaddr = 0x%llX",
+ dma_map.vaddr);
+ }
+
+ /* TODO - This is a W.A. as VFIO currently does not add the mapping of
+ * the interrupt region to SMMU. This should be removed once the
+ * support is added in the Kernel.
+ */
+ vfio_map_irq_region(group);
+
+ return 0;
+}
+
static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
{
int64_t v_addr = (int64_t)MAP_FAILED;
diff --git a/drivers/bus/fslmc/fslmc_vfio.h b/drivers/bus/fslmc/fslmc_vfio.h
index c5a42fe..83a7c68 100644
--- a/drivers/bus/fslmc/fslmc_vfio.h
+++ b/drivers/bus/fslmc/fslmc_vfio.h
@@ -70,5 +70,6 @@ int vfio_dmamap_mem_region(
int fslmc_vfio_setup_group(void);
int fslmc_vfio_process_group(struct rte_bus *bus);
+int fslmc_vfio_dmamap(void);
#endif /* _FSLMC_VFIO_H_ */
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index d1456d5..3a90e7c 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -911,6 +911,8 @@ void dpaa2_dev_stats_reset(struct rte_eth_dev *dev)
eth_dev->rx_pkt_burst = dpaa2_dev_rx;
eth_dev->tx_pkt_burst = dpaa2_dev_tx;
+ fslmc_vfio_dmamap();
+
return 0;
}
--
1.9.1