[igt-dev] [PATCH i-g-t v2 3/3] tests/api_intel_bb: Add misplaced_blitter test

[Karolina Drobnik]

Exercise intel_bb with a custom context engines layout.

Signed-off-by: Karolina Drobnik <karolina.drobnik at intel.com>
---
 tests/i915/api_intel_bb.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/tests/i915/api_intel_bb.c b/tests/i915/api_intel_bb.c
index 6ba1fd1b..44272e9a 100644
--- a/tests/i915/api_intel_bb.c
+++ b/tests/i915/api_intel_bb.c
@@ -50,6 +50,8 @@
 #define COLOR_77	0x77
 #define COLOR_CC	0xcc
 
+#define MI_FLUSH_DW	(0x26 << 23)
+
 IGT_TEST_DESCRIPTION("intel_bb API check.");
 
 enum reloc_objects {
@@ -1209,6 +1211,38 @@ static void full_batch(struct buf_ops *bops)
 	intel_bb_destroy(ibb);
 }
 
+static void misplaced_blitter(struct buf_ops *bops)
+{
+	int i915 = buf_ops_get_fd(bops);
+	struct intel_bb *ibb;
+
+	gem_require_contexts(i915);
+
+	/* Use custom configuration with blitter at index 0 */
+	const intel_ctx_cfg_t cfg = (intel_ctx_cfg_t) {
+			.num_engines = 2,
+			.engines = {
+				{ .engine_class = I915_ENGINE_CLASS_COPY,
+				  .engine_instance = 0
+				},
+				{ .engine_class = I915_ENGINE_CLASS_RENDER,
+				  .engine_instance = 0
+				},
+			},
+		};
+	const intel_ctx_t *ctx = intel_ctx_create(i915, &cfg);
+
+	ibb = intel_bb_create_with_context(i915, ctx->id, &ctx->cfg, PAGE_SIZE);
+
+	/* Try to execute blitter-specific instruction */
+	intel_bb_out(ibb, MI_FLUSH_DW);
+	intel_bb_emit_bbe(ibb);
+	intel_bb_flush_blit(ibb);
+
+	intel_bb_destroy(ibb);
+	intel_ctx_destroy(i915, ctx);
+}
+
 static int render(struct buf_ops *bops, uint32_t tiling, bool do_reloc,
 		  uint32_t width, uint32_t height)
 {
@@ -1581,6 +1615,10 @@ igt_main_args("dpibc:", NULL, help_str, opt_handler, NULL)
 	igt_subtest("full-batch")
 		full_batch(bops);
 
+	igt_describe("Execute intel_bb with set of engines provided by userspace");
+	igt_subtest("misplaced-blitter")
+		misplaced_blitter(bops);
+
 	igt_subtest_with_dynamic("render") {
 		for (i = 0; i < ARRAY_SIZE(tests); i++) {
 			const struct test *t = &tests[i];
-- 
2.25.1