[2/5] drm: add drm_exec selftests

Commit Message

Christian König April 26, 2022, 1:22 p.m. UTC

Largely just the initial skeleton.

Signed-off-by: Christian König <[e-mail]>
---
 drivers/gpu/drm/selftests/Makefile            |  2 +-
 .../gpu/drm/selftests/drm_exec_selftests.h    | 10 +++
 drivers/gpu/drm/selftests/test-drm_exec.c     | 74 +++++++++++++++++++
 3 files changed, 85 insertions(+), 1 deletion(-)
 create mode 100644 drivers/gpu/drm/selftests/drm_exec_selftests.h
 create mode 100644 drivers/gpu/drm/selftests/test-drm_exec.c

Patch

diff --git a/drivers/gpu/drm/selftests/Makefile b/drivers/gpu/drm/selftests/Makefile
index 5ba5f9138c95..0ab4b0f0642f 100644
--- a/drivers/gpu/drm/selftests/Makefile
+++ b/drivers/gpu/drm/selftests/Makefile
@@ -5,4 +5,4 @@  test-drm_modeset-y := test-drm_modeset_common.o test-drm_plane_helper.o \
 		      test-drm_rect.o
 
 obj-$(CONFIG_DRM_DEBUG_SELFTEST) += test-drm_mm.o test-drm_modeset.o test-drm_cmdline_parser.o \
-				    test-drm_buddy.o
+				    test-drm_buddy.o test-drm_exec.o
diff --git a/drivers/gpu/drm/selftests/drm_exec_selftests.h b/drivers/gpu/drm/selftests/drm_exec_selftests.h
new file mode 100644
index 000000000000..d88ec9c85fe6
--- /dev/null
+++ b/drivers/gpu/drm/selftests/drm_exec_selftests.h
@@ -0,0 +1,10 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/* List each unit test as selftest(name, function)
+ *
+ * The name is used as both an enum and expanded as igt__name to create
+ * a module parameter. It must be unique and legal for a C identifier.
+ *
+ * Tests are executed in order by igt/drm_exec
+ */
+selftest(sanitycheck, igt_sanitycheck) /* keep first (selfcheck for igt) */
+selftest(exec_lock1, igt_exec_lock1)
diff --git a/drivers/gpu/drm/selftests/test-drm_exec.c b/drivers/gpu/drm/selftests/test-drm_exec.c
new file mode 100644
index 000000000000..de2c3d986828
--- /dev/null
+++ b/drivers/gpu/drm/selftests/test-drm_exec.c
@@ -0,0 +1,74 @@ 
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#define pr_fmt(fmt) "drm_exec: " fmt
+
+#include <linux/module.h>
+#include <linux/prime_numbers.h>
+
+#include <drm/drm_exec.h>
+#include <drm/drm_device.h>
+#include <drm/drm_gem.h>
+
+#include "../lib/drm_random.h"
+
+#define TESTS "drm_exec_selftests.h"
+#include "drm_selftest.h"
+
+static	struct drm_device dev;
+
+static int igt_sanitycheck(void *ignored)
+{
+	struct drm_exec exec;
+
+	drm_exec_init(&exec, true);
+	drm_exec_fini(&exec);
+	pr_info("%s - ok!\n", __func__);
+	return 0;
+}
+
+static int igt_exec_lock1(void *ignored)
+{
+	struct drm_gem_object gobj = { };
+	struct drm_exec exec;
+	int ret;
+
+	drm_gem_private_object_init(&dev, &gobj, PAGE_SIZE);
+
+	drm_exec_init(&exec, true);
+	drm_exec_while_not_all_locked(&exec) {
+		ret = drm_exec_prepare_obj(&exec, &gobj, 1);
+		drm_exec_continue_on_contention(&exec);
+		if (ret) {
+			drm_exec_fini(&exec);
+			pr_err("%s - err %d!\n", __func__, ret);
+			return ret;
+		}
+	}
+	drm_exec_fini(&exec);
+	pr_info("%s - ok!\n", __func__);
+	return 0;
+}
+
+#include "drm_selftest.c"
+
+static int __init test_drm_exec_init(void)
+{
+	int err;
+
+	err = run_selftests(selftests, ARRAY_SIZE(selftests), NULL);
+
+	return err > 0 ? 0 : err;
+}
+
+static void __exit test_drm_exec_exit(void)
+{
+}
+
+module_init(test_drm_exec_init);
+module_exit(test_drm_exec_exit);
+
+MODULE_AUTHOR("AMD");
+MODULE_LICENSE("GPL and additional rights");