tests/amdgpu: Add amdgpu module reload test

Test to ensure unloading and loading of amdgpu driver works

Tested on:
ASIC: NAVI14

Changes since v1:
* Added documentaion
* Updated commit message

Signed-off-by: Victor Lu <victorchengchi.lu@amd.com>
Co-developed-by: Anson Jacob <Anson.Jacob@amd.com>
Cc: Petri Latvala <petri.latvala@intel.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Mark Yacoub <markyacoub@google.com>
Acked-by: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>

2 files changed, 84 insertions, 0 deletions

diff --git a/tests/amdgpu/amd_module_load.c b/tests/amdgpu/amd_module_load.c
new file mode 100644
index 00000000..77df96d5
--- /dev/null
+++ b/tests/amdgpu/amd_module_load.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2021 Advanced Micro Devices, Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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_kmod.h"
+
+#include <amdgpu.h>
+#include <amdgpu_drm.h>
+#include <sys/ioctl.h>
+
+/**
+ * sanity_check:
+ *
+ * Ensures the driver is able to respond to DRM_IOCTL_AMDGPU_INFO ioctl
+ * with a timeout.
+ *
+ */
+static void sanity_check(void)
+{
+	int err = 0;
+	int fd;
+	int arg_ret;
+	struct drm_amdgpu_info args = {0};
+
+	args.return_pointer = (uintptr_t) &arg_ret;
+	args.return_size = sizeof(int);
+	args.query = AMDGPU_INFO_HW_IP_INFO;
+	args.query_hw_ip.type = AMDGPU_HW_IP_COMPUTE;
+
+	fd = drm_open_driver(DRIVER_AMDGPU);
+	igt_set_timeout(1, "Module reload timeout!");
+
+	if (ioctl(fd, DRM_IOCTL_AMDGPU_INFO, &args) < 0)
+		err = -errno;
+
+	igt_set_timeout(0, NULL);
+	close(fd);
+
+	igt_assert_eq(err, 0);
+}
+
+igt_main
+{
+	igt_describe("Make sure reloading amdgpu drivers works");
+	igt_subtest("reload") {
+		int err;
+		igt_amdgpu_driver_unload();
+
+		err = igt_amdgpu_driver_load(NULL);
+
+		igt_assert_eq(err, 0);
+
+		sanity_check();
+
+		igt_amdgpu_driver_unload();
+	}
+
+	igt_fixture
+	{
+		/* load the module back in */
+		igt_amdgpu_driver_load(NULL);
+	}
+}
diff --git a/tests/amdgpu/meson.build b/tests/amdgpu/meson.build
index b92aa22b..84179410 100644
--- a/tests/amdgpu/meson.build
+++ b/tests/amdgpu/meson.build
@@ -9,6 +9,7 @@ if libdrm_amdgpu.found()
 			  'amd_cs_nop',
 			  'amd_info',
 			  'amd_prime',
+			  'amd_module_load',
 			]
 	amdgpu_deps += libdrm_amdgpu
 endif