[igt-dev] [PATCH i-g-t 21/27] gem_wsim: Allow RCS virtual engine with SSEU control

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

To allow exercising the SSEU configuration in combination with Virtual
Engine, allow RCS to be specified in the engine map and use appropriate
index based addressing when applying SSEU configuration to it.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 benchmarks/gem_wsim.c | 51 ++++++++++++++++++++++++++++++-------------
 1 file changed, 36 insertions(+), 15 deletions(-)

diff --git a/benchmarks/gem_wsim.c b/benchmarks/gem_wsim.c
index ede505e537fd..fe70e7719d88 100644
--- a/benchmarks/gem_wsim.c
+++ b/benchmarks/gem_wsim.c
@@ -382,7 +382,8 @@ static int parse_engine_map(struct w_step *step, const char *_str)
 		if ((int)engine < 0)
 			return -1;
 
-		if (engine != VCS && engine != VCS1 && engine != VCS2)
+		if (engine != VCS && engine != VCS1 && engine != VCS2 &&
+		    engine != RCS)
 			return -1; /* TODO */
 
 		add = engine == VCS ? 2 : 1;
@@ -1183,7 +1184,7 @@ static struct drm_i915_gem_context_param_sseu get_device_sseu(void)
 }
 
 static uint64_t
-set_ctx_sseu(uint32_t ctx, uint64_t slice_mask)
+set_ctx_sseu(struct ctx *ctx, uint64_t slice_mask)
 {
 	struct drm_i915_gem_context_param_sseu sseu = get_device_sseu();
 	struct drm_i915_gem_context_param param = { };
@@ -1191,10 +1192,17 @@ set_ctx_sseu(uint32_t ctx, uint64_t slice_mask)
 	if (slice_mask == -1)
 		slice_mask = device_sseu.slice_mask;
 
+	if (ctx->engine_map && ctx->wants_balance) {
+		sseu.flags = I915_CONTEXT_SSEU_FLAG_ENGINE_INDEX;
+		sseu.engine.engine_class = I915_ENGINE_CLASS_INVALID;
+		sseu.engine.engine_instance = 0;
+	}
+
 	sseu.slice_mask = slice_mask;
 
-	param.ctx_id = ctx;
+	param.ctx_id = ctx->id;
 	param.param = I915_CONTEXT_PARAM_SSEU;
+	param.size = sizeof(sseu);
 	param.value = (uintptr_t)&sseu;
 
 	gem_context_set_param(fd, &param);
@@ -1458,10 +1466,17 @@ prepare_workload(unsigned int id, struct workload *wrk, unsigned int flags)
 					ctx->engine_map_count;
 
 				for (j = 0; j < ctx->engine_map_count; j++) {
-					load_balance.engines[j].engine_class =
-						I915_ENGINE_CLASS_VIDEO; /* FIXME */
-					load_balance.engines[j].engine_instance =
-						ctx->engine_map[j] - VCS1; /* FIXME */
+					if (ctx->engine_map[j] == RCS) {
+						load_balance.engines[j].engine_class =
+							I915_ENGINE_CLASS_RENDER;
+						load_balance.engines[j].engine_instance =
+							0; /* FIXME */
+					} else {
+						load_balance.engines[j].engine_class =
+							I915_ENGINE_CLASS_VIDEO; /* FIXME */
+						load_balance.engines[j].engine_instance =
+							ctx->engine_map[j] - VCS1; /* FIXME */
+					}
 				}
 			} else {
 				set_engines.extensions = 0;
@@ -1474,10 +1489,16 @@ prepare_workload(unsigned int id, struct workload *wrk, unsigned int flags)
 				I915_ENGINE_CLASS_INVALID_NONE;
 
 			for (j = 1; j <= ctx->engine_map_count; j++) {
-				set_engines.engines[j].engine_class =
-					I915_ENGINE_CLASS_VIDEO; /* FIXME */
-				set_engines.engines[j].engine_instance =
-					ctx->engine_map[j - 1] - VCS1; /* FIXME */
+				if (ctx->engine_map[j - 1] == RCS) {
+					set_engines.engines[j].engine_class =
+						I915_ENGINE_CLASS_RENDER;
+					set_engines.engines[j].engine_instance = 0; /* FIXME */
+				} else {
+					set_engines.engines[j].engine_class =
+						I915_ENGINE_CLASS_VIDEO; /* FIXME */
+					set_engines.engines[j].engine_instance =
+						ctx->engine_map[j - 1] - VCS1; /* FIXME */
+				}
 			}
 
 			for (j = 0; j < ctx->bond_count; j++) {
@@ -1556,7 +1577,7 @@ prepare_workload(unsigned int id, struct workload *wrk, unsigned int flags)
 
 		if (wrk->sseu) {
 			/* Set to slice 0 only, one slice. */
-			ctx->sseu = set_ctx_sseu(ctx_id, 1);
+			ctx->sseu = set_ctx_sseu(ctx, 1);
 		}
 
 		if (share_vm)
@@ -2540,9 +2561,9 @@ static void *run_workload(void *data)
 				   w->type == BOND) {
 				continue;
 			} else if (w->type == SSEU) {
-				if (w->sseu != wrk->ctx_list[w->context].sseu) {
-					wrk->ctx_list[w->context].sseu =
-						set_ctx_sseu(wrk->ctx_list[w->context].id,
+				if (w->sseu != wrk->ctx_list[w->context * 2].sseu) {
+					wrk->ctx_list[w->context * 2].sseu =
+						set_ctx_sseu(&wrk->ctx_list[w->context * 2],
 							     w->sseu);
 				}
 				continue;
-- 
2.20.1