[Intel-gfx] [PATCH 5/5] flip_test: add wf-vblank test for expired sequence

[Imre Deak]

Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 tests/flip_test.c |   61 ++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 49 insertions(+), 12 deletions(-)

diff --git a/tests/flip_test.c b/tests/flip_test.c
index 7fed2f1..bffd5b4 100644
--- a/tests/flip_test.c
+++ b/tests/flip_test.c
@@ -52,6 +52,7 @@
 #define TEST_VBLANK		(1 << 8)
 #define TEST_VBLANK_BLOCK	(1 << 9)
 #define TEST_VBLANK_ABSOLUTE	(1 << 10)
+#define TEST_VBLANK_EXPIRED_SEQ	(1 << 11)
 
 #define EVENT_FLIP		(1 << 0)
 #define EVENT_VBLANK		(1 << 1)
@@ -221,13 +222,14 @@ struct vblank_reply {
 	struct timeval ts;
 };
 
-static int do_wait_for_vblank(struct test_output *o, int crtc_idx,
-			      int target_seq, struct vblank_reply *reply)
+static int __wait_for_vblank(unsigned int flags, int crtc_idx,
+			      int target_seq, unsigned long ret_data,
+			      struct vblank_reply *reply)
 {
 	drmVBlank wait_vbl;
 	int ret;
 	unsigned crtc_idx_mask;
-	bool event = !(o->flags & TEST_VBLANK_BLOCK);
+	bool event = !(flags & TEST_VBLANK_BLOCK);
 
 	memset(&wait_vbl, 0, sizeof(wait_vbl));
 
@@ -235,13 +237,13 @@ static int do_wait_for_vblank(struct test_output *o, int crtc_idx,
 	assert(!(crtc_idx_mask & ~DRM_VBLANK_HIGH_CRTC_MASK));
 
 	wait_vbl.request.type = crtc_idx_mask;
-	if (o->flags & TEST_VBLANK_ABSOLUTE)
+	if (flags & TEST_VBLANK_ABSOLUTE)
 		wait_vbl.request.type |= DRM_VBLANK_ABSOLUTE;
 	else
 		wait_vbl.request.type |= DRM_VBLANK_RELATIVE;
 	if (event) {
 		wait_vbl.request.type |= DRM_VBLANK_EVENT;
-		wait_vbl.request.signal = (unsigned long)o;
+		wait_vbl.request.signal = ret_data;
 	}
 	wait_vbl.request.sequence = target_seq;
 
@@ -251,17 +253,25 @@ static int do_wait_for_vblank(struct test_output *o, int crtc_idx,
 		reply->ts.tv_sec = wait_vbl.reply.tval_sec;
 		reply->ts.tv_usec = wait_vbl.reply.tval_usec;
 		reply->sequence = wait_vbl.reply.sequence;
-
-		if (event) {
-			assert(!(o->pending_events & EVENT_VBLANK));
-			o->pending_events |= EVENT_VBLANK;
-		}
 	} else
 		ret = -errno;
 
 	return ret;
 }
 
+static int do_wait_for_vblank(struct test_output *o, int pipe_id,
+			      int target_seq, struct vblank_reply *reply)
+{
+	int ret;
+
+	ret = __wait_for_vblank(o->flags, pipe_id, target_seq, (unsigned long)o,
+				reply);
+	if (ret == 0 && !(o->flags & TEST_VBLANK_BLOCK))
+		set_flag(&o->pending_events, EVENT_VBLANK);
+
+	return ret;
+}
+
 static bool
 analog_tv_connector(struct test_output *o)
 {
@@ -330,6 +340,12 @@ static void vblank_handler(int fd, unsigned int frame, unsigned int sec,
 	fixup_premature_vblank_ts(o, &o->vblank_state);
 }
 
+static bool seq_before(unsigned int s1, unsigned int s2)
+{
+	/* This bounding matches the one in DRM_IOCTL_WAIT_VBLANK. */
+	return s1 - s2 > 1UL << 23;
+}
+
 static void check_state(struct test_output *o, struct event_state *es)
 {
 	struct timeval diff;
@@ -355,8 +371,7 @@ static void check_state(struct test_output *o, struct event_state *es)
 	if (es->count == 0)
 		return;
 
-	/* This bounding matches the one in DRM_IOCTL_WAIT_VBLANK. */
-	if (es->current_seq - (es->last_seq + es->seq_step) > 1UL << 23) {
+	if (seq_before(es->current_seq, es->last_seq + es->seq_step)) {
 		fprintf(stderr, "unexpected %s seq %u, should be >= %u\n",
 			es->name, es->current_seq, es->last_seq + es->seq_step);
 		exit(10);
@@ -460,6 +475,26 @@ static unsigned int run_test_step(struct test_output *o)
 	o->current_fb_id = !o->current_fb_id;
 	new_fb_id = o->fb_ids[o->current_fb_id];
 
+	if ((o->flags & TEST_VBLANK_EXPIRED_SEQ) &&
+	    !(o->pending_events & EVENT_VBLANK) &&
+	    (o->vblank_state.count > 0 || o->flip_state.count > 0)) {
+		struct event_state *es;
+		struct vblank_reply reply;
+		unsigned int exp_seq;
+
+		if (o->vblank_state.count > 0)
+			es = &o->vblank_state;
+		else
+			es = &o->flip_state;
+
+		exp_seq = es->last_seq - 1;
+		do_or_die(__wait_for_vblank(TEST_VBLANK_ABSOLUTE |
+					    TEST_VBLANK_BLOCK, o->pipe, exp_seq,
+					    0, &reply));
+		assert(!seq_before(reply.sequence, exp_seq));
+		assert(!timercmp(&reply.ts, &es->last_ts, <));
+	}
+
 	if (do_flip && (o->flags & TEST_EINVAL) && o->flip_state.count > 0)
 		assert(do_page_flip(o, new_fb_id) == expected_einval);
 
@@ -934,6 +969,8 @@ int main(int argc, char **argv)
 		{ 30, TEST_FLIP | TEST_PAN | TEST_WITH_DUMMY_LOAD, "delayed flip vs panning" },
 		{ 30, TEST_FLIP | TEST_MODESET | TEST_EINVAL, "flip vs modeset" },
 		{ 30, TEST_FLIP | TEST_MODESET | TEST_WITH_DUMMY_LOAD, "delayed flip vs modeset" },
+		{ 5,  TEST_FLIP | TEST_VBLANK_EXPIRED_SEQ,
+					"flip vs. expired vblank" },
 
 		{ 15, TEST_FLIP | TEST_VBLANK | TEST_VBLANK_ABSOLUTE |
 		      TEST_CHECK_TS, "flip vs absolute wf-vblank" },
-- 
1.7.9.5