[igt-dev] [PATCH i-g-t v23 22/37] tests/api_intel_bb: Add subtest to check render batch on the last page

@@ -36,6 +36,7 @@
 #include <glib.h>
 #include <zlib.h>
 #include "intel_bufops.h"
+#include "sw_sync.h"
 
 #define PAGE_SIZE 4096
 

@@ -1320,6 +1321,77 @@ static void render_ccs(struct buf_ops *bops)
 	igt_assert_f(fails == 0, "render-ccs fails: %d\n", fails);
 }
 
+static void last_page(struct buf_ops *bops, uint32_t width, uint32_t height)
+{
+	struct intel_bb *ibb1, *ibb2;
+	struct intel_buf src, dst;
+	int i915 = buf_ops_get_fd(bops);
+	uint32_t devid = intel_get_drm_devid(i915);
+	igt_render_copyfunc_t render_copy = NULL;
+	uint64_t gtt_size;
+	uint64_t ctx;
+	int ret;
+
+	igt_require(gem_uses_full_ppgtt(i915));
+	gtt_size = gem_aperture_size(i915);
+
+	ctx = gem_context_create(i915);
+
+	ibb1 = intel_bb_create_full(i915, ctx, PAGE_SIZE,
+				   0, gtt_size, INTEL_ALLOCATOR_SIMPLE,
+				   ALLOC_STRATEGY_LOW_TO_HIGH);
+
+	ibb2 = intel_bb_create_full(i915, 0, PAGE_SIZE,
+				   0, gtt_size, INTEL_ALLOCATOR_SIMPLE,
+				   ALLOC_STRATEGY_HIGH_TO_LOW);
+
+	if (debug_bb) {
+		intel_bb_set_debug(ibb1, true);
+		intel_bb_set_debug(ibb2, true);
+	}
+
+	scratch_buf_init(bops, &src, width, height, I915_TILING_NONE,
+			 I915_COMPRESSION_NONE);
+	scratch_buf_init(bops, &dst, width, height, I915_TILING_NONE,
+			 I915_COMPRESSION_NONE);
+	scratch_buf_draw_pattern(bops, &src,
+				 0, 0, width, height,
+				 0, 0, width, height, 0);
+
+	render_copy = igt_get_render_copyfunc(devid);
+	igt_assert(render_copy);
+
+	render_copy(ibb1,
+		    &src,
+		    0, 0, width, height,
+		    &dst,
+		    0, 0);
+	gem_sync(i915, dst.handle);
+	sync_fence_wait(ibb1->fence, -1);
+	igt_assert_eq(sync_fence_status(ibb1->fence), 1);
+	intel_bb_destroy(ibb1);
+
+	intel_buf_close(bops, &dst);
+	scratch_buf_init(bops, &dst, width, height, I915_TILING_NONE,
+			 I915_COMPRESSION_NONE);
+
+	render_copy(ibb2,
+		    &src,
+		    0, 0, width, height,
+		    &dst,
+		    0, 0);
+
+	/* We likely got a hang here, so free resources before assert */
+	sync_fence_wait(ibb2->fence, -1);
+	ret = sync_fence_status(ibb2->fence);
+
+	intel_bb_destroy(ibb2);
+	intel_buf_close(bops, &src);
+	intel_buf_close(bops, &dst);
+
+	igt_assert_f(ret == 1, "Batch in last page in rcs leads to hang\n");
+}
+
 static int opt_handler(int opt, int opt_index, void *data)
 {
 	switch (opt) {

@@ -1471,6 +1543,9 @@ igt_main_args("dpib", NULL, help_str, opt_handler, NULL)
 	igt_subtest("render-ccs")
 		render_ccs(bops);
 
+	igt_subtest("last-page")
+		last_page(bops, 512, 512);
+
 	igt_fixture {
 		buf_ops_destroy(bops);
 		close(i915);