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Diffstat (limited to 'tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c')
-rw-r--r--tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
index d179d81e2355..29af27acd40e 100644
--- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
+++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
@@ -218,6 +218,84 @@ out:
return ret;
}
+static int test_alloc_zeroed(char *heap_name, size_t size)
+{
+ int heap_fd = -1, dmabuf_fd[32];
+ int i, j, ret;
+ void *p = NULL;
+ char *c;
+
+ printf(" Testing alloced %ldk buffers are zeroed: ", size / 1024);
+ heap_fd = dmabuf_heap_open(heap_name);
+ if (heap_fd < 0)
+ return -1;
+
+ /* Allocate and fill a bunch of buffers */
+ for (i = 0; i < 32; i++) {
+ ret = dmabuf_heap_alloc(heap_fd, size, 0, &dmabuf_fd[i]);
+ if (ret < 0) {
+ printf("FAIL (Allocation (%i) failed)\n", i);
+ goto out;
+ }
+ /* mmap and fill with simple pattern */
+ p = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, dmabuf_fd[i], 0);
+ if (p == MAP_FAILED) {
+ printf("FAIL (mmap() failed!)\n");
+ ret = -1;
+ goto out;
+ }
+ dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_START);
+ memset(p, 0xff, size);
+ dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_END);
+ munmap(p, size);
+ }
+ /* close them all */
+ for (i = 0; i < 32; i++)
+ close(dmabuf_fd[i]);
+
+ /* Allocate and validate all buffers are zeroed */
+ for (i = 0; i < 32; i++) {
+ ret = dmabuf_heap_alloc(heap_fd, size, 0, &dmabuf_fd[i]);
+ if (ret < 0) {
+ printf("FAIL (Allocation (%i) failed)\n", i);
+ goto out;
+ }
+
+ /* mmap and validate everything is zero */
+ p = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, dmabuf_fd[i], 0);
+ if (p == MAP_FAILED) {
+ printf("FAIL (mmap() failed!)\n");
+ ret = -1;
+ goto out;
+ }
+ dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_START);
+ c = (char *)p;
+ for (j = 0; j < size; j++) {
+ if (c[j] != 0) {
+ printf("FAIL (Allocated buffer not zeroed @ %i)\n", j);
+ break;
+ }
+ }
+ dmabuf_sync(dmabuf_fd[i], DMA_BUF_SYNC_END);
+ munmap(p, size);
+ }
+ /* close them all */
+ for (i = 0; i < 32; i++)
+ close(dmabuf_fd[i]);
+
+ close(heap_fd);
+ printf("OK\n");
+ return 0;
+
+out:
+ while (i > 0) {
+ close(dmabuf_fd[i]);
+ i--;
+ }
+ close(heap_fd);
+ return ret;
+}
+
/* Test the ioctl version compatibility w/ a smaller structure then expected */
static int dmabuf_heap_alloc_older(int fd, size_t len, unsigned int flags,
int *dmabuf_fd)
@@ -386,6 +464,14 @@ int main(void)
if (ret)
break;
+ ret = test_alloc_zeroed(dir->d_name, 4 * 1024);
+ if (ret)
+ break;
+
+ ret = test_alloc_zeroed(dir->d_name, ONE_MEG);
+ if (ret)
+ break;
+
ret = test_alloc_compat(dir->d_name);
if (ret)
break;