r600g: determine in advance if hw has vertex cache

src/gallium/drivers/r600/r600_hw_context.c

@@ -1163,22 +1163,11 @@ void r600_inval_texture_cache(struct r600_context *ctx)
 
 void r600_inval_vertex_cache(struct r600_context *ctx)
 {
-	if (ctx->family == CHIP_RV610 ||
-	    ctx->family == CHIP_RV620 ||
-	    ctx->family == CHIP_RS780 ||
-	    ctx->family == CHIP_RS880 ||
-	    ctx->family == CHIP_RV710 ||
-	    ctx->family == CHIP_CEDAR ||
-	    ctx->family == CHIP_PALM ||
-	    ctx->family == CHIP_SUMO ||
-	    ctx->family == CHIP_SUMO2 ||
-	    ctx->family == CHIP_CAICOS ||
-	    ctx->family == CHIP_CAYMAN ||
-	    ctx->family == CHIP_ARUBA) {
+	if (ctx->has_vertex_cache) {
+		ctx->surface_sync_cmd.flush_flags |= S_0085F0_VC_ACTION_ENA(1);
+	} else {
 		/* Some GPUs don't have the vertex cache and must use the texture cache instead. */
 		ctx->surface_sync_cmd.flush_flags |= S_0085F0_TC_ACTION_ENA(1);
-	} else {
-		ctx->surface_sync_cmd.flush_flags |= S_0085F0_VC_ACTION_ENA(1);
 	}
 	r600_atom_dirty(ctx, &ctx->surface_sync_cmd.atom);
 }

src/gallium/drivers/r600/r600_pipe.c

@@ -263,6 +263,11 @@ static struct pipe_context *r600_create_context(struct pipe_screen *screen, void
 		if (r600_context_init(rctx))
 			goto fail;
 		rctx->custom_dsa_flush = r600_create_db_flush_dsa(rctx);
+		rctx->has_vertex_cache = !(rctx->family == CHIP_RV610 ||
+					   rctx->family == CHIP_RV620 ||
+					   rctx->family == CHIP_RS780 ||
+					   rctx->family == CHIP_RS880 ||
+					   rctx->family == CHIP_RV710);
 		break;
 	case EVERGREEN:
 	case CAYMAN:
@@ -271,6 +276,13 @@ static struct pipe_context *r600_create_context(struct pipe_screen *screen, void
 		if (evergreen_context_init(rctx))
 			goto fail;
 		rctx->custom_dsa_flush = evergreen_create_db_flush_dsa(rctx);
+		rctx->has_vertex_cache = !(rctx->family == CHIP_CEDAR ||
+					   rctx->family == CHIP_PALM ||
+					   rctx->family == CHIP_SUMO ||
+					   rctx->family == CHIP_SUMO2 ||
+					   rctx->family == CHIP_CAICOS ||
+					   rctx->family == CHIP_CAYMAN ||
+					   rctx->family == CHIP_ARUBA);
 		break;
 	default:
 		R600_ERR("Unsupported chip class %d.\n", rctx->chip_class);

src/gallium/drivers/r600/r600_pipe.h

@@ -235,6 +235,7 @@ struct r600_context {
 	struct blitter_context		*blitter;
 	enum radeon_family		family;
 	enum chip_class			chip_class;
+	boolean				has_vertex_cache;
 	unsigned			r6xx_num_clause_temp_gprs;
 	void				*custom_dsa_flush;
 	struct r600_screen		*screen;