[PATCH i-g-t 6/8] tests/intel/xe_drm_fdinfo: Add an iterator for virtual engines

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

Add a helper iterator for virtual engines.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
---
 tests/intel/xe_drm_fdinfo.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tests/intel/xe_drm_fdinfo.c b/tests/intel/xe_drm_fdinfo.c
index 8f8b4d599..2d25c2fbd 100644
--- a/tests/intel/xe_drm_fdinfo.c
+++ b/tests/intel/xe_drm_fdinfo.c
@@ -87,6 +87,34 @@ static const uint64_t batch_addr[] = {
 	0x1d0000,
 	0x1e0000,
 };
+
+#define MAX_GTS 2
+#define MAX_INSTANCE 9
+struct virtual_hwe {
+	struct drm_xe_engine_class_instance eci[MAX_INSTANCE];
+	int count;
+} vhwe[MAX_GTS][DRM_XE_ENGINE_CLASS_COMPUTE + 1] = {};
+
+static void list_virtual_engines(int fd)
+{
+	struct drm_xe_engine_class_instance *hwe;
+
+	xe_for_each_engine(fd, hwe) {
+		struct virtual_hwe *v;
+
+		igt_assert(hwe->gt_id < MAX_GTS);
+		igt_assert(hwe->engine_class < DRM_XE_ENGINE_CLASS_COMPUTE + 1);
+		v = &vhwe[hwe->gt_id][hwe->engine_class];
+
+		igt_assert(v->count < MAX_INSTANCE);
+		v->eci[v->count++] = *hwe;
+	}
+}
+#define xe_for_each_multi_engine(__fd, __hwe, __count) \
+	for (int igt_unique(gt) = 0; igt_unique(gt) < MAX_GTS; igt_unique(gt)++) \
+		for (int igt_unique(c) = 0; igt_unique(c) < DRM_XE_ENGINE_CLASS_COMPUTE + 1; igt_unique(c)++) \
+			for_if((__hwe = &vhwe[igt_unique(gt)][igt_unique(c)].eci[0]) && ((__count = vhwe[igt_unique(gt)][igt_unique(c)].count) > 1))
+
 static void read_engine_cycles(int xe, struct pceu_cycles *pceu)
 {
 	struct drm_client_fdinfo info = { };
@@ -702,6 +730,7 @@ igt_main
 		igt_require(igt_parse_drm_fdinfo(xe, &info, NULL, 0, NULL, 0));
 		igt_require(info.num_engines);
 
+		list_virtual_engines(xe);
 		xe_for_each_engine(xe, hwe) {
 			num_engines++;
 			igt_assert(hwe->engine_class < ARRAY_SIZE(classes));
-- 
2.34.1