Test case mmap's system pages and tries to performs a user
DMA map and unmap both partially and fully.
Signed-off-by: Nithin Dabilpuram <ndabilpu...@marvell.com>
Acked-by: Anatoly Burakov <anatoly.bura...@intel.com>
---
app/test/meson.build | 1 +
app/test/test_vfio.c | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 104 insertions(+)
create mode 100644 app/test/test_vfio.c
diff --git a/app/test/meson.build b/app/test/meson.build
index 94fd39f..d9eedb6 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -139,6 +139,7 @@ test_sources = files('commands.c',
'test_trace_register.c',
'test_trace_perf.c',
'test_version.c',
+ 'test_vfio.c',
'virtual_pmd.c'
)
diff --git a/app/test/test_vfio.c b/app/test/test_vfio.c
new file mode 100644
index 0000000..00626d4
--- /dev/null
+++ b/app/test/test_vfio.c
@@ -0,0 +1,103 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2020 Marvell.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#include <rte_common.h>
+#include <rte_eal.h>
+#include <rte_eal_paging.h>
+#include <rte_errno.h>
+#include <rte_memory.h>
+#include <rte_vfio.h>
+
+#include "test.h"
+
+static int
+test_memory_vfio_dma_map(void)
+{
+ uint64_t sz1, sz2, sz = 2 * rte_mem_page_size();
+ uint64_t unmap1, unmap2;
+ uint8_t *mem;
+ int ret;
+
+ /* Allocate twice size of page */
+ mem = mmap(NULL, sz, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ if (mem == MAP_FAILED) {
+ printf("Failed to allocate memory for external heap\n");
+ return -1;
+ }
+
+ /* Force page allocation */
+ memset(mem, 0, sz);
+
+ /* map the whole region */
+ ret = rte_vfio_container_dma_map(RTE_VFIO_DEFAULT_CONTAINER_FD,
+ (uintptr_t)mem, (rte_iova_t)mem, sz);
+ if (ret) {
+ /* Check if VFIO is not available or no device is probed */
+ if (rte_errno == ENOTSUP || rte_errno == ENODEV) {
+ ret = 1;
+ goto fail;
+ }
+ printf("Failed to dma map whole region, ret=%d(%s)\n",
+ ret, rte_strerror(rte_errno));
+ goto fail;
+ }
+
+ unmap1 = (uint64_t)mem + (sz / 2);
+ sz1 = sz / 2;
+ unmap2 = (uint64_t)mem;
+ sz2 = sz / 2;
+ /* unmap the partial region */
+ ret = rte_vfio_container_dma_unmap(RTE_VFIO_DEFAULT_CONTAINER_FD,
+ unmap1, (rte_iova_t)unmap1, sz1);
+ if (ret) {
+ if (rte_errno == ENOTSUP) {
+ printf("Partial dma unmap not supported\n");
+ unmap2 = (uint64_t)mem;
+ sz2 = sz;
+ } else {
+ printf("Failed to unmap second half region,
ret=%d(%s)\n",
+ ret, rte_strerror(rte_errno));
+ goto fail;
+ }
+ }
+
+ /* unmap the remaining region */
+ ret = rte_vfio_container_dma_unmap(RTE_VFIO_DEFAULT_CONTAINER_FD,
+ unmap2, (rte_iova_t)unmap2, sz2);
+ if (ret) {
+ printf("Failed to unmap remaining region, ret=%d(%s)\n", ret,
+ rte_strerror(rte_errno));
+ goto fail;
+ }
+
+fail:
+ munmap(mem, sz);
+ return ret;
+}
+
+static int
+test_vfio(void)
+{
+ int ret;
+
+ /* test for vfio dma map/unmap */
+ ret = test_memory_vfio_dma_map();
+ if (ret == 1) {
+ printf("VFIO dma map/unmap unsupported\n");
+ } else if (ret < 0) {
+ printf("Error vfio dma map/unmap, ret=%d\n", ret);
+ return -1;
+ }
+
+ return 0;
+}
+
+REGISTER_TEST_COMMAND(vfio_autotest, test_vfio);
--
2.8.4
