[Intel-gfx] [PATCH igt] igt/gem_eio: Check hang/eio recovery during suspend

[Chris Wilson]

When we suspend, we do not want to be interrupted by a pending reset, or
failure of that reset. After the resume, the errors should be noted as
usual.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 tests/gem_eio.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/tests/gem_eio.c b/tests/gem_eio.c
index 608b2dfd..899cb627 100644
--- a/tests/gem_eio.c
+++ b/tests/gem_eio.c
@@ -207,6 +207,51 @@ static void test_inflight(int fd)
 	}
 }
 
+static void test_inflight_suspend(int fd)
+{
+	struct drm_i915_gem_execbuffer2 execbuf;
+	struct drm_i915_gem_exec_object2 obj[2];
+	uint32_t bbe = MI_BATCH_BUFFER_END;
+	int fence[64]; /* conservative estimate of ring size */
+	igt_hang_t hang;
+
+	igt_require(gem_has_exec_fence(fd));
+	igt_require(i915_reset_control(false));
+
+	memset(obj, 0, sizeof(obj));
+	obj[0].flags = EXEC_OBJECT_WRITE;
+	obj[1].handle = gem_create(fd, 4096);
+	gem_write(fd, obj[1].handle, 0, &bbe, sizeof(bbe));
+
+	hang = igt_hang_ring(fd, 0);
+	obj[0].handle = hang.handle;
+
+	memset(&execbuf, 0, sizeof(execbuf));
+	execbuf.buffers_ptr = to_user_pointer(obj);
+	execbuf.buffer_count = 2;
+	execbuf.flags = I915_EXEC_FENCE_OUT;
+
+	for (unsigned int n = 0; n < ARRAY_SIZE(fence); n++) {
+		gem_execbuf_wr(fd, &execbuf);
+		fence[n] = execbuf.rsvd2 >> 32;
+		igt_assert(fence[n] != -1);
+	}
+
+	igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
+				      SUSPEND_TEST_DEVICES);
+
+	igt_post_hang_ring(fd, hang);
+
+	igt_assert_eq(__gem_wait(fd, obj[1].handle, -1), 0);
+	for (unsigned int n = 0; n < ARRAY_SIZE(fence); n++) {
+		igt_assert_eq(sync_fence_status(fence[n]), -EIO);
+		close(fence[n]);
+	}
+
+	igt_assert(i915_reset_control(true));
+	trigger_reset(fd);
+}
+
 static uint32_t __gem_context_create(int fd)
 {
 	struct drm_i915_gem_context_create create;
@@ -454,4 +499,7 @@ igt_main
 		igt_skip_on(caps & HAVE_SEMAPHORES);
 		test_inflight_internal(fd);
 	}
+
+	igt_subtest("in-flight-suspend")
+		test_inflight_suspend(fd);
 }
-- 
2.14.2