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-rw-r--r--tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c152
1 files changed, 120 insertions, 32 deletions
diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
index 909da9cdda97..890a8236a8ba 100644
--- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
+++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
@@ -13,10 +13,9 @@
#include <sys/types.h>
#include <linux/dma-buf.h>
+#include <linux/dma-heap.h>
#include <drm/drm.h>
-#include "../../../../include/uapi/linux/dma-heap.h"
-
#define DEVPATH "/dev/dma_heap"
static int check_vgem(int fd)
@@ -130,16 +129,13 @@ static int dmabuf_heap_alloc(int fd, size_t len, unsigned int flags,
dmabuf_fd);
}
-static void dmabuf_sync(int fd, int start_stop)
+static int dmabuf_sync(int fd, int start_stop)
{
struct dma_buf_sync sync = {
.flags = start_stop | DMA_BUF_SYNC_RW,
};
- int ret;
- ret = ioctl(fd, DMA_BUF_IOCTL_SYNC, &sync);
- if (ret)
- printf("sync failed %d\n", errno);
+ return ioctl(fd, DMA_BUF_IOCTL_SYNC, &sync);
}
#define ONE_MEG (1024 * 1024)
@@ -151,16 +147,14 @@ static int test_alloc_and_import(char *heap_name)
void *p = NULL;
int ret;
- printf("Testing heap: %s\n", heap_name);
-
heap_fd = dmabuf_heap_open(heap_name);
if (heap_fd < 0)
return -1;
- printf("Allocating 1 MEG\n");
+ printf(" Testing allocation and importing: ");
ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd);
if (ret) {
- printf("Allocation Failed!\n");
+ printf("FAIL (Allocation Failed!)\n");
ret = -1;
goto out;
}
@@ -172,11 +166,10 @@ static int test_alloc_and_import(char *heap_name)
dmabuf_fd,
0);
if (p == MAP_FAILED) {
- printf("mmap() failed: %m\n");
+ printf("FAIL (mmap() failed)\n");
ret = -1;
goto out;
}
- printf("mmap passed\n");
dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START);
memset(p, 1, ONE_MEG / 2);
@@ -186,25 +179,31 @@ static int test_alloc_and_import(char *heap_name)
importer_fd = open_vgem();
if (importer_fd < 0) {
ret = importer_fd;
- printf("Failed to open vgem\n");
- goto out;
+ printf("(Could not open vgem - skipping): ");
+ } else {
+ ret = import_vgem_fd(importer_fd, dmabuf_fd, &handle);
+ if (ret < 0) {
+ printf("FAIL (Failed to import buffer)\n");
+ goto out;
+ }
}
- ret = import_vgem_fd(importer_fd, dmabuf_fd, &handle);
+ ret = dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START);
if (ret < 0) {
- printf("Failed to import buffer\n");
+ printf("FAIL (DMA_BUF_SYNC_START failed!)\n");
goto out;
}
- printf("import passed\n");
- dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START);
memset(p, 0xff, ONE_MEG);
- dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END);
- printf("syncs passed\n");
+ ret = dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END);
+ if (ret < 0) {
+ printf("FAIL (DMA_BUF_SYNC_END failed!)\n");
+ goto out;
+ }
close_handle(importer_fd, handle);
ret = 0;
-
+ printf(" OK\n");
out:
if (p)
munmap(p, ONE_MEG);
@@ -218,6 +217,84 @@ 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)
@@ -292,23 +369,24 @@ static int test_alloc_compat(char *heap_name)
if (heap_fd < 0)
return -1;
- printf("Testing (theoretical)older alloc compat\n");
+ printf(" Testing (theoretical)older alloc compat: ");
ret = dmabuf_heap_alloc_older(heap_fd, ONE_MEG, 0, &dmabuf_fd);
if (ret) {
- printf("Older compat allocation failed!\n");
+ printf("FAIL (Older compat allocation failed!)\n");
ret = -1;
goto out;
}
close(dmabuf_fd);
+ printf("OK\n");
- printf("Testing (theoretical)newer alloc compat\n");
+ printf(" Testing (theoretical)newer alloc compat: ");
ret = dmabuf_heap_alloc_newer(heap_fd, ONE_MEG, 0, &dmabuf_fd);
if (ret) {
- printf("Newer compat allocation failed!\n");
+ printf("FAIL (Newer compat allocation failed!)\n");
ret = -1;
goto out;
}
- printf("Ioctl compatibility tests passed\n");
+ printf("OK\n");
out:
if (dmabuf_fd >= 0)
close(dmabuf_fd);
@@ -327,17 +405,17 @@ static int test_alloc_errors(char *heap_name)
if (heap_fd < 0)
return -1;
- printf("Testing expected error cases\n");
+ printf(" Testing expected error cases: ");
ret = dmabuf_heap_alloc(0, ONE_MEG, 0x111111, &dmabuf_fd);
if (!ret) {
- printf("Did not see expected error (invalid fd)!\n");
+ printf("FAIL (Did not see expected error (invalid fd)!)\n");
ret = -1;
goto out;
}
ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0x111111, &dmabuf_fd);
if (!ret) {
- printf("Did not see expected error (invalid heap flags)!\n");
+ printf("FAIL (Did not see expected error (invalid heap flags)!)\n");
ret = -1;
goto out;
}
@@ -345,12 +423,12 @@ static int test_alloc_errors(char *heap_name)
ret = dmabuf_heap_alloc_fdflags(heap_fd, ONE_MEG,
~(O_RDWR | O_CLOEXEC), 0, &dmabuf_fd);
if (!ret) {
- printf("Did not see expected error (invalid fd flags)!\n");
+ printf("FAIL (Did not see expected error (invalid fd flags)!)\n");
ret = -1;
goto out;
}
- printf("Expected error checking passed\n");
+ printf("OK\n");
ret = 0;
out:
if (dmabuf_fd >= 0)
@@ -379,10 +457,20 @@ int main(void)
if (!strncmp(dir->d_name, "..", 3))
continue;
+ printf("Testing heap: %s\n", dir->d_name);
+ printf("=======================================\n");
ret = test_alloc_and_import(dir->d_name);
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;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.