drm/amd/display: Add debug bit to disable unbounded requesting

[Description]
Add debug bit to disable unbounded requesting.
Reviewed-by: NJun Lei <Jun.Lei@amd.com>
Acked-by: NJasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: NDillon Varone <Dillon.Varone@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc.h

@@ -872,6 +872,7 @@ struct dc_debug_options {
 	enum lttpr_mode lttpr_mode_override;
 	unsigned int dsc_delay_factor_wa_x1000;
 	unsigned int min_prefetch_in_strobe_ns;
+	bool disable_unbounded_requesting;
 };
 
 struct gpu_info_soc_bounding_box_v1_0;

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c

@@ -726,6 +726,7 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.allow_sw_cursor_fallback = false, // Linux can't do SW cursor "fallback"
 	.alloc_extra_way_for_cursor = true,
 	.min_prefetch_in_strobe_ns = 60000, // 60us
+	.disable_unbounded_requesting = false,
 };
 
 static const struct dc_debug_options debug_defaults_diags = {

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c

@@ -357,6 +357,7 @@ void dcn32_set_det_allocations(struct dc *dc, struct dc_state *context,
 	int i, pipe_cnt;
 	struct resource_context *res_ctx = &context->res_ctx;
 	struct pipe_ctx *pipe;
+	bool disable_unbounded_requesting = dc->debug.disable_z9_mpc || dc->debug.disable_unbounded_requesting;
 
 	for (i = 0, pipe_cnt = 0; i < dc->res_pool->pipe_count; i++) {
 
@@ -373,7 +374,7 @@ void dcn32_set_det_allocations(struct dc *dc, struct dc_state *context,
 	 */
 	if (pipe_cnt == 1) {
 		pipes[0].pipe.src.det_size_override = DCN3_2_MAX_DET_SIZE;
-		if (pipe->plane_state && !dc->debug.disable_z9_mpc && pipe->plane_state->tiling_info.gfx9.swizzle != DC_SW_LINEAR) {
+		if (pipe->plane_state && !disable_unbounded_requesting && pipe->plane_state->tiling_info.gfx9.swizzle != DC_SW_LINEAR) {
 			if (!is_dual_plane(pipe->plane_state->format)) {
 				pipes[0].pipe.src.det_size_override = DCN3_2_DEFAULT_DET_SIZE;
 				pipes[0].pipe.src.unbounded_req_mode = true;

drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c

@@ -724,6 +724,7 @@ static const struct dc_debug_options debug_defaults_drv = {
 	.allow_sw_cursor_fallback = false, // Linux can't do SW cursor "fallback"
 	.alloc_extra_way_for_cursor = true,
 	.min_prefetch_in_strobe_ns = 60000, // 60us
+	.disable_unbounded_requesting = false,
 };
 
 static const struct dc_debug_options debug_defaults_diags = {