lkml.org 
[lkml]   [2019]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC][PATCH 5/5 v2] kselftests: Add dma-heap test
Date
Add very trivial allocation test for dma-heaps.

TODO: Need to actually do some validation on
the returned dma-buf.

Cc: Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
v2: Switched to use reworked dma-heap apis
---
tools/testing/selftests/dmabuf-heaps/Makefile | 11 +++
tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 96 ++++++++++++++++++++++
2 files changed, 107 insertions(+)
create mode 100644 tools/testing/selftests/dmabuf-heaps/Makefile
create mode 100644 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c

diff --git a/tools/testing/selftests/dmabuf-heaps/Makefile b/tools/testing/selftests/dmabuf-heaps/Makefile
new file mode 100644
index 0000000..c414ad3
--- /dev/null
+++ b/tools/testing/selftests/dmabuf-heaps/Makefile
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0
+CFLAGS += -static -O3 -Wl,-no-as-needed -Wall
+#LDLIBS += -lrt -lpthread -lm
+
+# these are all "safe" tests that don't modify
+# system time or require escalated privileges
+TEST_GEN_PROGS = dmabuf-heap
+
+
+include ../lib.mk
+
diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
new file mode 100644
index 0000000..06837a4
--- /dev/null
+++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+
+#include "../../../../include/uapi/linux/dma-heap.h"
+
+#define DEVPATH "/dev/dma_heap"
+
+int dmabuf_heap_open(char *name)
+{
+ int ret, fd;
+ char buf[256];
+
+ ret = sprintf(buf, "%s/%s", DEVPATH, name);
+ if (ret < 0) {
+ printf("sprintf failed!\n");
+ return ret;
+ }
+
+ fd = open(buf, O_RDWR);
+ if (fd < 0)
+ printf("open %s failed!\n", buf);
+ return fd;
+}
+
+int dmabuf_heap_alloc(int fd, size_t len, unsigned int flags, int *dmabuf_fd)
+{
+ struct dma_heap_allocation_data data = {
+ .len = len,
+ .flags = flags,
+ };
+ int ret;
+
+ if (dmabuf_fd == NULL)
+ return -EINVAL;
+
+ ret = ioctl(fd, DMA_HEAP_IOC_ALLOC, &data);
+ if (ret < 0)
+ return ret;
+ *dmabuf_fd = (int)data.fd;
+ return ret;
+}
+
+#define ONE_MEG (1024*1024)
+
+void do_test(char *heap_name)
+{
+ int heap_fd = -1, dmabuf_fd = -1;
+ int ret;
+
+ printf("Testing heap: %s\n", heap_name);
+
+ heap_fd = dmabuf_heap_open(heap_name);
+ if (heap_fd < 0)
+ return;
+
+ printf("Allocating 1 MEG\n");
+ ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd);
+ if (ret)
+ goto out;
+
+ /* DO SOMETHING WITH THE DMABUF HERE? */
+
+out:
+ if (dmabuf_fd >= 0)
+ close(dmabuf_fd);
+ if (heap_fd >= 0)
+ close(heap_fd);
+}
+
+
+int main(void)
+{
+ DIR *d;
+ struct dirent *dir;
+
+ d = opendir(DEVPATH);
+ if (!d) {
+ printf("No %s directory?\n", DEVPATH);
+ return -1;
+ }
+
+ while ((dir = readdir(d)) != NULL)
+ do_test(dir->d_name);
+
+
+ return 0;
+}
--
2.7.4
\
 
 \ /
  Last update: 2019-03-05 21:55    [W:0.291 / U:16.036 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site