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>

1 files changed, 59 insertions, 0 deletions

diff --git a/lib/igt_kmod.c b/lib/igt_kmod.c
index 55295fa5..10e98384 100644
--- a/lib/igt_kmod.c
+++ b/lib/igt_kmod.c
@@ -433,6 +433,65 @@ igt_i915_driver_unload(void)
 	return IGT_EXIT_SUCCESS;
 }
 
+/**
+ * igt_amdgpu_driver_load:
+ * @opts: options to pass to amdgpu driver
+ *
+ * Returns: IGT_EXIT_SUCCESS or IGT_EXIT_FAILURE.
+ *
+ * Loads the amdgpu driver and its dependencies.
+ *
+ */
+int
+igt_amdgpu_driver_load(const char *opts)
+{
+	if (opts)
+		igt_info("Reloading amdgpu with %s\n\n", opts);
+
+	if (igt_kmod_load("amdgpu", opts)) {
+		igt_warn("Could not load amdgpu\n");
+		return IGT_EXIT_FAILURE;
+	}
+
+	bind_fbcon(true);
+
+	return IGT_EXIT_SUCCESS;
+}
+
+/**
+ * igt_amdgpu_driver_unload:
+ *
+ * Returns: IGT_EXIT_SUCCESS on success, IGT_EXIT_FAILURE on failure
+ * and IGT_EXIT_SKIP if amdgpu could not be unloaded.
+ *
+ * Unloads the amdgpu driver and its dependencies.
+ *
+ */
+int
+igt_amdgpu_driver_unload(void)
+{
+	bind_fbcon(false);
+
+	if (igt_kmod_is_loaded("amdgpu")) {
+		if (igt_kmod_unload("amdgpu", 0)) {
+			igt_warn("Could not unload amdgpu\n");
+			igt_kmod_list_loaded();
+			igt_lsof("/dev/dri");
+			return IGT_EXIT_SKIP;
+		}
+	}
+
+	igt_kmod_unload("drm_kms_helper", 0);
+	igt_kmod_unload("drm", 0);
+
+	if (igt_kmod_is_loaded("amdgpu")) {
+		igt_warn("amdgpu.ko still loaded!\n");
+		return IGT_EXIT_FAILURE;
+	}
+
+	return IGT_EXIT_SUCCESS;
+}
+
 static void kmsg_dump(int fd)
 {
 	char record[4096 + 1];