For each dmadev instance, perform some basic copy tests to validate that
functionality.
Signed-off-by: Bruce Richardson <bruce.richard...@intel.com>
---
app/test/test_dmadev.c | 174 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 174 insertions(+)
diff --git a/app/test/test_dmadev.c b/app/test/test_dmadev.c
index 12f7c69629..261f45db71 100644
--- a/app/test/test_dmadev.c
+++ b/app/test/test_dmadev.c
@@ -2,12 +2,15 @@
* Copyright(c) 2021 HiSilicon Limited.
* Copyright(c) 2021 Intel Corporation.
*/
+#include <unistd.h>
#include <inttypes.h>
#include <rte_common.h>
#include <rte_dev.h>
#include <rte_dmadev.h>
#include <rte_bus_vdev.h>
+#include <rte_mbuf.h>
+#include <rte_random.h>
#include "test.h"
@@ -16,6 +19,11 @@ extern int test_dmadev_api(uint16_t dev_id);
#define PRINT_ERR(...) print_err(__func__, __LINE__, __VA_ARGS__)
+#define COPY_LEN 1024
+
+static struct rte_mempool *pool;
+static uint16_t id_count;
+
static inline int
__rte_format_printf(3, 4)
print_err(const char *func, int lineno, const char *format, ...)
@@ -31,6 +39,134 @@ print_err(const char *func, int lineno, const char *format,
...)
return ret;
}
+static inline void
+await_hw(int dev_id, uint16_t vchan)
+{
+ int idle = rte_dmadev_vchan_idle(dev_id, vchan);
+ if (idle < 0) {
+ /* for drivers that don't support this op, just sleep for 25
microseconds */
+ usleep(25);
+ return;
+ }
+
+ /* for those that do, *max* end time is one second from now, but all
should be faster */
+ const uint64_t end_cycles = rte_get_timer_cycles() + rte_get_timer_hz();
+ while (!idle && rte_get_timer_cycles() < end_cycles) {
+ rte_pause();
+ idle = rte_dmadev_vchan_idle(dev_id, vchan);
+ }
+}
+
+static int
+test_enqueue_copies(int dev_id, uint16_t vchan)
+{
+ unsigned int i;
+ uint16_t id;
+
+ /* test doing a single copy */
+ do {
+ struct rte_mbuf *src, *dst;
+ char *src_data, *dst_data;
+
+ src = rte_pktmbuf_alloc(pool);
+ dst = rte_pktmbuf_alloc(pool);
+ src_data = rte_pktmbuf_mtod(src, char *);
+ dst_data = rte_pktmbuf_mtod(dst, char *);
+
+ for (i = 0; i < COPY_LEN; i++)
+ src_data[i] = rte_rand() & 0xFF;
+
+ id = rte_dmadev_copy(dev_id, vchan, src->buf_iova +
src->data_off,
+ dst->buf_iova + dst->data_off, COPY_LEN,
RTE_DMA_OP_FLAG_SUBMIT);
+ if (id != id_count) {
+ PRINT_ERR("Error with rte_dmadev_copy, got %u, expected
%u\n",
+ id, id_count);
+ return -1;
+ }
+
+ /* give time for copy to finish, then check it was done */
+ await_hw(dev_id, vchan);
+
+ for (i = 0; i < COPY_LEN; i++) {
+ if (dst_data[i] != src_data[i]) {
+ PRINT_ERR("Data mismatch at char %u [Got %02x
not %02x]\n", i,
+ dst_data[i], src_data[i]);
+ rte_dmadev_dump(dev_id, stderr);
+ return -1;
+ }
+ }
+
+ /* now check completion works */
+ if (rte_dmadev_completed(dev_id, vchan, 1, &id, NULL) != 1) {
+ PRINT_ERR("Error with rte_dmadev_completed\n");
+ return -1;
+ }
+ if (id != id_count) {
+ PRINT_ERR("Error:incorrect job id received, %u
[expected %u]\n",
+ id, id_count);
+ return -1;
+ }
+
+ rte_pktmbuf_free(src);
+ rte_pktmbuf_free(dst);
+
+ /* now check completion works */
+ if (rte_dmadev_completed(dev_id, 0, 1, NULL, NULL) != 0) {
+ PRINT_ERR("Error with rte_dmadev_completed in empty
check\n");
+ return -1;
+ }
+ id_count++;
+
+ } while (0);
+
+ /* test doing a multiple single copies */
+ do {
+ const uint16_t max_ops = 4;
+ struct rte_mbuf *src, *dst;
+ char *src_data, *dst_data;
+
+ src = rte_pktmbuf_alloc(pool);
+ dst = rte_pktmbuf_alloc(pool);
+ src_data = rte_pktmbuf_mtod(src, char *);
+ dst_data = rte_pktmbuf_mtod(dst, char *);
+
+ for (i = 0; i < COPY_LEN; i++)
+ src_data[i] = rte_rand() & 0xFF;
+
+ /* perform the same copy <max_ops> times */
+ for (i = 0; i < max_ops; i++) {
+ if (rte_dmadev_copy(dev_id, vchan,
+ src->buf_iova + src->data_off,
+ dst->buf_iova + dst->data_off,
+ COPY_LEN, RTE_DMA_OP_FLAG_SUBMIT) !=
id_count++) {
+ PRINT_ERR("Error with rte_dmadev_copy\n");
+ return -1;
+ }
+ }
+ await_hw(dev_id, vchan);
+
+ if ((i = rte_dmadev_completed(dev_id, vchan, max_ops * 2, &id,
NULL)) != max_ops) {
+ PRINT_ERR("Error with rte_dmadev_completed, got %u not
%u\n", i, max_ops);
+ return -1;
+ }
+ if (id != id_count - 1) {
+ PRINT_ERR("Error, incorrect job id returned: got %u not
%u\n",
+ id, id_count - 1);
+ return -1;
+ }
+ for (i = 0; i < COPY_LEN; i++) {
+ if (dst_data[i] != src_data[i]) {
+ PRINT_ERR("Data mismatch at char %u\n", i);
+ return -1;
+ }
+ }
+ rte_pktmbuf_free(src);
+ rte_pktmbuf_free(dst);
+ } while (0);
+
+ return 0;
+}
+
static int
test_dmadev_instance(uint16_t dev_id)
{
@@ -43,6 +179,7 @@ test_dmadev_instance(uint16_t dev_id)
.nb_desc = TEST_RINGSIZE,
};
const int vchan = 0;
+ int i;
printf("\n### Test dmadev instance %u\n", dev_id);
@@ -79,10 +216,47 @@ test_dmadev_instance(uint16_t dev_id)
stats.completed, stats.submitted, stats.errors);
return -1;
}
+ id_count = 0;
+
+ /* create a mempool for running tests */
+ pool = rte_pktmbuf_pool_create("TEST_DMADEV_POOL",
+ TEST_RINGSIZE * 2, /* n == num elements */
+ 32, /* cache size */
+ 0, /* priv size */
+ 2048, /* data room size */
+ info.device->numa_node);
+ if (pool == NULL) {
+ PRINT_ERR("Error with mempool creation\n");
+ return -1;
+ }
+
+ /* run the test cases, use many iterations to ensure UINT16_MAX id
wraparound */
+ printf("DMA Dev: %u, Running Copy Tests\n", dev_id);
+ for (i = 0; i < 640; i++) {
+
+ if (test_enqueue_copies(dev_id, vchan) != 0) {
+ printf("Error with iteration %d\n", i);
+ rte_dmadev_dump(dev_id, stdout);
+ goto err;
+ }
+ rte_dmadev_stats_get(dev_id, 0, &stats);
+ printf("Ops submitted: %"PRIu64"\t", stats.submitted);
+ printf("Ops completed: %"PRIu64"\t", stats.completed);
+ printf("Errors: %"PRIu64"\r", stats.errors);
+ }
+ printf("\n");
+
+
+ rte_mempool_free(pool);
rte_dmadev_stop(dev_id);
rte_dmadev_stats_reset(dev_id, vchan);
return 0;
+
+err:
+ rte_mempool_free(pool);
+ rte_dmadev_stop(dev_id);
+ return -1;
}
static int
--
2.30.2
