[PATCH i-g-t 7/8] tests/intel/xe_drm_fdinfo: Add tests for virtual engines

[Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>]

Add tests to verify utilization on virtual engines.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
---
 tests/intel/xe_drm_fdinfo.c | 77 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 76 insertions(+), 1 deletion(-)

diff --git a/tests/intel/xe_drm_fdinfo.c b/tests/intel/xe_drm_fdinfo.c
index 2d25c2fbd..96b246364 100644
--- a/tests/intel/xe_drm_fdinfo.c
+++ b/tests/intel/xe_drm_fdinfo.c
@@ -43,6 +43,18 @@
  * SUBTEST: drm-all-busy-idle-check-all
  * Description: Check that all engines show busy when all are loaded
  *
+ * SUBTEST: drm-virtual-idle
+ * Description: Check that virtual engines show no load when idle
+ *
+ * SUBTEST: drm-virtual-busy-idle
+ * Description: Check that virtual engines show load when idle after busy
+ *
+ * SUBTEST: drm-virtual-all-busy-idle-check-all
+ * Description: Check that all virtual engines show busy when loaded
+ *
+ * SUBTEST: drm-virtual-busy-idle-isolation
+ * Description: Check that virtual engine load does not spill over to other drm clients
+ *
  * SUBTEST: drm-total-resident
  * Description: Create and compare total and resident memory consumption by client
  *
@@ -714,12 +726,60 @@ all_busy_check_all(int fd, struct drm_xe_engine_class_instance *hwe, int width,
 	if (flags & TEST_ISOLATION)
 		close(local_fd);
 }
+
+static void
+multi_all_busy_check_all(int fd, unsigned int flags)
+{
+	struct pceu_cycles pceu1[DRM_XE_ENGINE_CLASS_COMPUTE + 1];
+	struct pceu_cycles pceu2[DRM_XE_ENGINE_CLASS_COMPUTE + 1];
+	struct xe_spin_ctx *ctx[DRM_XE_ENGINE_CLASS_COMPUTE + 1] = {};
+	struct drm_xe_engine_class_instance *hwe;
+	int local_fd = fd, count, class;
+	uint32_t vm;
+
+	if (flags & TEST_ISOLATION)
+		local_fd = drm_reopen_driver(fd);
+
+	vm = xe_vm_create(local_fd, 0, 0);
+	if (flags & TEST_BUSY) {
+		xe_for_each_multi_engine(local_fd, hwe, count) {
+			class = hwe->engine_class;
+			ctx[class] = xe_spin_ctx_init(local_fd, hwe, vm,
+						      1,
+						      count);
+			xe_spin_sync_start(local_fd, ctx[class]);
+		}
+	}
+
+	read_engine_cycles(local_fd, pceu1);
+	measured_usleep(batch_duration_ns / 1000);
+	if (flags & TEST_TRAILING_IDLE) {
+		xe_for_each_multi_engine(local_fd, hwe, count) {
+			xe_spin_sync_end(local_fd, ctx[hwe->engine_class]);
+		}
+	}
+	read_engine_cycles(local_fd, pceu2);
+
+	xe_for_each_multi_engine(local_fd, hwe, count) {
+		class = hwe->engine_class;
+		check_results(pceu1, pceu2, class,
+			      1,
+			      flags);
+		xe_spin_sync_end(local_fd, ctx[class]);
+		xe_spin_ctx_destroy(local_fd, ctx[class]);
+	}
+	xe_vm_destroy(local_fd, vm);
+
+	if (flags & TEST_ISOLATION)
+		close(local_fd);
+}
+
 igt_main
 {
 	struct drm_xe_engine_class_instance *hwe;
 	unsigned int num_engines = 0, num_classes = 0;
 	unsigned int classes[16] = { };
-	int xe;
+	int xe, count;
 
 	igt_fixture {
 		struct drm_client_fdinfo info = { };
@@ -772,6 +832,21 @@ igt_main
 	igt_subtest("drm-all-busy-idle-check-all")
 		all_busy_check_all(xe, hwe, 1, 1, TEST_BUSY | TEST_TRAILING_IDLE);
 
+	igt_subtest("drm-virtual-idle")
+		xe_for_each_multi_engine(xe, hwe, count)
+			single(xe, hwe, 1, count, 0);
+
+	igt_subtest("drm-virtual-busy-idle")
+		xe_for_each_multi_engine(xe, hwe, count)
+			single(xe, hwe, 1, count, TEST_BUSY | TEST_TRAILING_IDLE);
+
+	igt_subtest("drm-virtual-all-busy-idle-check-all")
+		multi_all_busy_check_all(xe, TEST_BUSY | TEST_TRAILING_IDLE);
+
+	igt_subtest("drm-virtual-busy-idle-isolation")
+		xe_for_each_multi_engine(xe, hwe, count)
+			single(xe, hwe, 1, count, TEST_BUSY | TEST_TRAILING_IDLE | TEST_ISOLATION);
+
 	igt_describe("Create and compare total and resident memory consumption by client");
 	igt_subtest("drm-total-resident")
 		test_total_resident(xe);
-- 
2.34.1