[PATCH i-g-t v2 04/10] tests/intel/xe_drm_fdinfo: Add helpers for spinning batches

[Umesh Nerlige Ramappa]

Add helpers for submitting batches and waiting for them to start.

v2: Remove xe prefixes from the structures and helpers (Lucas)

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
---
 tests/intel/xe_drm_fdinfo.c | 135 ++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)

diff --git a/tests/intel/xe_drm_fdinfo.c b/tests/intel/xe_drm_fdinfo.c
index c697f3e53..037f25e53 100644
--- a/tests/intel/xe_drm_fdinfo.c
+++ b/tests/intel/xe_drm_fdinfo.c
@@ -54,6 +54,17 @@ static const char *engine_map[] = {
 	"vecs",
 	"ccs",
 };
+
+static const uint64_t batch_addr[] = {
+	0x170000,
+	0x180000,
+	0x190000,
+	0x1a0000,
+	0x1b0000,
+	0x1c0000,
+	0x1d0000,
+	0x1e0000,
+};
 static void read_engine_cycles(int xe, struct pceu_cycles *pceu)
 {
 	struct drm_client_fdinfo info = { };
@@ -329,6 +340,130 @@ static void basic_engine_utilization(int xe)
 	igt_require(info.num_engines);
 }
 
+#define MAX_PARALLEL 8
+struct spin_ctx {
+	uint32_t vm;
+	uint64_t addr[MAX_PARALLEL];
+	struct drm_xe_sync sync[2];
+	struct drm_xe_exec exec;
+	uint32_t exec_queue;
+	size_t bo_size;
+	uint32_t bo;
+	struct xe_spin *spin;
+	struct xe_spin_opts spin_opts;
+	bool ended;
+	uint16_t class;
+	uint16_t width;
+	uint16_t num_placements;
+};
+
+static struct spin_ctx *
+spin_ctx_init(int fd, struct drm_xe_engine_class_instance *hwe, uint32_t vm,
+	      uint16_t width, uint16_t num_placements)
+{
+	struct spin_ctx *ctx = calloc(1, sizeof(*ctx));
+
+	igt_assert(width && num_placements &&
+		   (width == 1 || num_placements == 1));
+
+	igt_assert(width <= MAX_PARALLEL);
+
+	ctx->class = hwe->engine_class;
+	ctx->width = width;
+	ctx->num_placements = num_placements;
+	ctx->vm = vm;
+	for (int i = 0; i < ctx->width; i++)
+		ctx->addr[i] = batch_addr[hwe->engine_class];
+
+	ctx->exec.num_batch_buffer = width;
+	ctx->exec.num_syncs = 2;
+	ctx->exec.syncs = to_user_pointer(ctx->sync);
+
+	ctx->sync[0].type = DRM_XE_SYNC_TYPE_SYNCOBJ;
+	ctx->sync[0].flags = DRM_XE_SYNC_FLAG_SIGNAL;
+	ctx->sync[0].handle = syncobj_create(fd, 0);
+
+	ctx->sync[1].type = DRM_XE_SYNC_TYPE_SYNCOBJ;
+	ctx->sync[1].flags = DRM_XE_SYNC_FLAG_SIGNAL;
+	ctx->sync[1].handle = syncobj_create(fd, 0);
+
+	ctx->bo_size = sizeof(struct xe_spin);
+	ctx->bo_size = xe_bb_size(fd, ctx->bo_size);
+	ctx->bo = xe_bo_create(fd, ctx->vm, ctx->bo_size,
+			       vram_if_possible(fd, hwe->gt_id),
+			       DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM);
+	ctx->spin = xe_bo_map(fd, ctx->bo, ctx->bo_size);
+
+	igt_assert_eq(__xe_exec_queue_create(fd, ctx->vm, width, num_placements,
+					     hwe, 0, &ctx->exec_queue), 0);
+
+	xe_vm_bind_async(fd, ctx->vm, 0, ctx->bo, 0, ctx->addr[0], ctx->bo_size,
+			 ctx->sync, 1);
+
+	return ctx;
+}
+
+static void
+spin_sync_start(int fd, struct spin_ctx *ctx)
+{
+	if (!ctx)
+		return;
+
+	ctx->spin_opts.addr = ctx->addr[0];
+	ctx->spin_opts.preempt = true;
+	xe_spin_init(ctx->spin, &ctx->spin_opts);
+
+	/* re-use sync[0] for exec */
+	ctx->sync[0].flags &= ~DRM_XE_SYNC_FLAG_SIGNAL;
+
+	ctx->exec.exec_queue_id = ctx->exec_queue;
+	if (ctx->width > 1)
+		ctx->exec.address = to_user_pointer(ctx->addr);
+	else
+		ctx->exec.address = ctx->addr[0];
+	xe_exec(fd, &ctx->exec);
+
+	xe_spin_wait_started(ctx->spin);
+	igt_assert(!syncobj_wait(fd, &ctx->sync[1].handle, 1, 1, 0, NULL));
+
+	igt_debug("%s: spinner started\n", engine_map[ctx->class]);
+}
+
+static void
+spin_sync_end(int fd, struct spin_ctx *ctx)
+{
+	if (!ctx || ctx->ended)
+		return;
+
+	xe_spin_end(ctx->spin);
+
+	igt_assert(syncobj_wait(fd, &ctx->sync[1].handle, 1, INT64_MAX, 0, NULL));
+	igt_assert(syncobj_wait(fd, &ctx->sync[0].handle, 1, INT64_MAX, 0, NULL));
+
+	ctx->sync[0].flags |= DRM_XE_SYNC_FLAG_SIGNAL;
+	xe_vm_unbind_async(fd, ctx->vm, 0, 0, ctx->addr[0], ctx->bo_size, ctx->sync, 1);
+	igt_assert(syncobj_wait(fd, &ctx->sync[0].handle, 1, INT64_MAX, 0, NULL));
+
+	ctx->ended = true;
+	igt_debug("%s: spinner ended\n", engine_map[ctx->class]);
+}
+
+static void
+spin_ctx_destroy(int fd, struct spin_ctx *ctx)
+{
+	if (!ctx)
+		return;
+
+	syncobj_destroy(fd, ctx->sync[0].handle);
+	syncobj_destroy(fd, ctx->sync[1].handle);
+	xe_exec_queue_destroy(fd, ctx->exec_queue);
+
+	munmap(ctx->spin, ctx->bo_size);
+	gem_close(fd, ctx->bo);
+
+	free(ctx);
+}
+
 igt_main
 {
 	int xe;
-- 
2.38.1