[igt-dev] [PATCH i-g-t] panfrost: Test labeling functionality

[Rohan Garg]

Introduce tests to cover the new generic labeling ioctl's
being reviewed here [1].

Signed-off-by: Rohan Garg <rohan.garg at collabora.com>

[1] https://patchwork.freedesktop.org/series/77267/

Signed-off-by: Rohan Garg <rohan.garg at collabora.com>
---
 include/drm-uapi/drm.h    |  23 ++++++-
 tests/meson.build         |   1 +
 tests/panfrost_bo_label.c | 129 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 152 insertions(+), 1 deletion(-)
 create mode 100644 tests/panfrost_bo_label.c

diff --git a/include/drm-uapi/drm.h b/include/drm-uapi/drm.h
index c7fd2a35..87124882 100644
--- a/include/drm-uapi/drm.h
+++ b/include/drm-uapi/drm.h
@@ -620,6 +620,25 @@ struct drm_gem_open {
 	__u64 size;
 };
 
+/** struct drm_handle_label - ioctl argument for labelling BOs.
+ *
+ * This label's a BO with a userspace label
+ *
+ */
+struct drm_handle_label {
+	/** Handle for the object being labelled. */
+	__u32 handle;
+
+	/** Label and label length (len includes the trailing NULL).
+	 *  Label lenght *MUST* be smaller than PAGE_SIZE.
+	 */
+	__u32 len;
+	__u64 label;
+
+	/** Flags .. Currently no flags are defined */
+	__u32 flags;
+};
+
 #define DRM_CAP_DUMB_BUFFER		0x1
 #define DRM_CAP_VBLANK_HIGH_CRTC	0x2
 #define DRM_CAP_DUMB_PREFERRED_DEPTH	0x3
@@ -941,8 +960,10 @@ extern "C" {
 #define DRM_IOCTL_SYNCOBJ_QUERY		DRM_IOWR(0xCB, struct drm_syncobj_timeline_array)
 #define DRM_IOCTL_SYNCOBJ_TRANSFER	DRM_IOWR(0xCC, struct drm_syncobj_transfer)
 #define DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL	DRM_IOWR(0xCD, struct drm_syncobj_timeline_array)
-
 #define DRM_IOCTL_MODE_GETFB2		DRM_IOWR(0xCE, struct drm_mode_fb_cmd2)
+#define DRM_IOCTL_HANDLE_SET_LABEL      DRM_IOWR(0xCF, struct drm_handle_label)
+#define DRM_IOCTL_HANDLE_GET_LABEL      DRM_IOWR(0xD0, struct drm_handle_label)
+
 
 /**
  * Device specific ioctls should only be in their respective headers
diff --git a/tests/meson.build b/tests/meson.build
index e69bdb7d..ee91bf48 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -72,6 +72,7 @@ test_progs = [
 	'kms_vblank',
 	'kms_vrr',
 	'meta_test',
+        'panfrost_bo_label',
 	'panfrost_get_param',
 	'panfrost_gem_new',
 	'panfrost_prime',
diff --git a/tests/panfrost_bo_label.c b/tests/panfrost_bo_label.c
new file mode 100644
index 00000000..d3179458
--- /dev/null
+++ b/tests/panfrost_bo_label.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright © 2020 Collabora Ltd.
+ *     Author: Rohan Garg <rohan.garg at collabora.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "igt.h"
+#include "igt_panfrost.h"
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <poll.h>
+#include "vc4_drm.h"
+
+static int
+set_label(int fd, int handle, const char *label)
+{
+	struct drm_handle_label args = { 0 };
+	if (label) {
+		args.handle = handle;
+		args.len = strlen(label) + 1;
+		args.label= (uintptr_t)label;
+	}
+
+	return drmIoctl(fd, DRM_IOCTL_HANDLE_SET_LABEL, &args);
+}
+
+static const char*
+get_label(int fd, int handle)
+{
+	struct drm_handle_label args = {
+                .handle = handle,
+		.len = 10,
+		.label = (uintptr_t) malloc(sizeof(char*) * 10)
+        };
+
+	drmIoctl(fd, DRM_IOCTL_HANDLE_GET_LABEL, &args);
+
+	if (!args.label)
+		return NULL;
+
+	igt_assert(args.label);
+
+        args.label = (uintptr_t) realloc(args.label, args.len);
+
+	drmIoctl(fd, DRM_IOCTL_HANDLE_GET_LABEL, &args);
+
+        return args.label;
+}
+
+
+igt_main
+{
+	int fd;
+
+	igt_fixture
+		fd = drm_open_driver(DRIVER_ANY);
+
+	igt_subtest("set-label") {
+		struct panfrost_bo *bo = igt_panfrost_gem_new(fd, 4096);
+		int ret;
+		ret = set_label(fd, bo->handle, "a test label");
+		igt_assert(ret == 0);
+
+		ret = set_label(fd, bo->handle, "a new test label");
+		igt_assert(ret == 0);
+
+		igt_panfrost_free_bo(fd, bo);
+	}
+
+	igt_subtest("get-label") {
+		struct panfrost_bo *bo = igt_panfrost_gem_new(fd, 4096);
+		set_label(fd, bo->handle, "a test label");
+		const char* label = get_label(fd, bo->handle);
+		igt_assert(strcmp(label, "a test label") == 0);
+		free(label);
+		igt_panfrost_free_bo(fd, bo);
+	}
+
+	igt_subtest("clear-label") {
+		struct panfrost_bo *bo = igt_panfrost_gem_new(fd, 4096);
+		set_label(fd, bo->handle, NULL);
+		igt_assert_eq(NULL, get_label(fd, bo->handle));
+		igt_panfrost_free_bo(fd, bo);
+	}
+
+	igt_subtest("label-too-long") {
+		char label[4096] = {[0 ... 4095] = 'a'};
+		int ret;
+		struct panfrost_bo *bo = igt_panfrost_gem_new(fd, 4096);
+		ret = set_label(fd, bo->handle, label);
+		igt_assert_eq(-1, ret);
+		igt_assert_eq(EINVAL, errno);
+		igt_panfrost_free_bo(fd, bo);
+	}
+
+	igt_subtest("set-bad-handle") {
+		int ret = set_label(fd, 0xd0d0d0d0, "bad handle");
+		igt_assert_eq(-1, ret);
+		igt_assert_eq(ENOENT, errno);
+	}
+
+	igt_fixture
+		close(fd);
+}
-- 
2.17.1