drm/amd/display: Update idle optimization handling

[How]
 - use dc interface instead of hwss interface in cursor functions, to keep
dc->idle_optimizations_allowed updated
 - add dc interface to check if idle optimizations might apply to a plane
Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -3138,9 +3138,11 @@ void dc_lock_memory_clock_frequency(struct dc *dc)
 			core_link_enable_stream(dc->current_state, &dc->current_state->res_ctx.pipe_ctx[i]);
 }
 
-bool dc_is_plane_eligible_for_idle_optimizaitons(struct dc *dc,
-						 struct dc_plane_state *plane)
+bool dc_is_plane_eligible_for_idle_optimizaitons(struct dc *dc, struct dc_plane_state *plane)
 {
+	if (dc->hwss.does_plane_fit_in_mall && dc->hwss.does_plane_fit_in_mall(dc, plane))
+		return true;
+
 	return false;
 }
 

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

@@ -171,6 +171,9 @@ struct dc_caps {
 	bool dmcub_support;
 	uint32_t num_of_internal_disp;
 	enum dp_protocol_version max_dp_protocol_version;
+	unsigned int mall_size_per_mem_channel;
+	unsigned int mall_size_total;
+	unsigned int cursor_cache_size;
 	struct dc_plane_cap planes[MAX_PLANES];
 	struct dc_color_caps color;
 };
@@ -499,6 +502,7 @@ struct dc_debug_options {
 	bool dmcub_emulation;
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	bool disable_idle_power_optimizations;
+	unsigned int mall_size_override;
 #endif
 	bool dmub_command_table; /* for testing only */
 	struct dc_bw_validation_profile bw_val_profile;

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

@@ -71,6 +71,7 @@ struct dc_plane_address {
 	union {
 		struct{
 			PHYSICAL_ADDRESS_LOC addr;
+			PHYSICAL_ADDRESS_LOC cursor_cache_addr;
 			PHYSICAL_ADDRESS_LOC meta_addr;
 			union large_integer dcc_const_color;
 		} grph;

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c

@@ -814,6 +814,19 @@ bool dcn30_apply_idle_power_optimizations(struct dc *dc, bool enable)
 	return true;
 }
 
+bool dcn30_does_plane_fit_in_mall(struct dc *dc, struct dc_plane_state *plane)
+{
+	// add meta size?
+	unsigned int surface_size = plane->plane_size.surface_pitch * plane->plane_size.surface_size.height *
+			(plane->format >= SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616 ? 8 : 4);
+	unsigned int mall_size = dc->caps.mall_size_total;
+
+	if (dc->debug.mall_size_override)
+		mall_size = 1024 * 1024 * dc->debug.mall_size_override;
+
+	return (surface_size + dc->caps.cursor_cache_size) < mall_size;
+}
+
 void dcn30_hardware_release(struct dc *dc)
 {
 	/* if pstate unsupported, force it supported */

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.h

@@ -65,6 +65,8 @@ void dcn30_set_avmute(struct pipe_ctx *pipe_ctx, bool enable);
 void dcn30_update_info_frame(struct pipe_ctx *pipe_ctx);
 void dcn30_program_dmdata_engine(struct pipe_ctx *pipe_ctx);
 
+bool dcn30_does_plane_fit_in_mall(struct dc *dc, struct dc_plane_state *plane);
+
 bool dcn30_apply_idle_power_optimizations(struct dc *dc, bool enable);
 
 void dcn30_hardware_release(struct dc *dc);

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c

@@ -91,6 +91,7 @@ static const struct hw_sequencer_funcs dcn30_funcs = {
 	.get_vupdate_offset_from_vsync = dcn10_get_vupdate_offset_from_vsync,
 	.calc_vupdate_position = dcn10_calc_vupdate_position,
 	.apply_idle_power_optimizations = dcn30_apply_idle_power_optimizations,
+	.does_plane_fit_in_mall = dcn30_does_plane_fit_in_mall,
 	.set_backlight_level = dcn21_set_backlight_level,
 	.set_abm_immediate_disable = dcn21_set_abm_immediate_disable,
 	.hardware_release = dcn30_hardware_release,

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c

@@ -2631,6 +2631,10 @@ static bool dcn30_resource_construct(
 	dc->caps.max_cursor_size = 256;
 	dc->caps.min_horizontal_blanking_period = 80;
 	dc->caps.dmdata_alloc_size = 2048;
+	dc->caps.mall_size_per_mem_channel = 8;
+	/* total size = mall per channel * num channels * 1024 * 1024 */
+	dc->caps.mall_size_total = dc->caps.mall_size_per_mem_channel * dc->ctx->dc_bios->vram_info.num_chans * 1048576;
+	dc->caps.cursor_cache_size = dc->caps.max_cursor_size * dc->caps.max_cursor_size * 8;
 
 	dc->caps.max_slave_planes = 1;
 	dc->caps.post_blend_color_processing = true;

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

@@ -217,6 +217,8 @@ struct hw_sequencer_funcs {
 	/* Idle Optimization Related */
 	bool (*apply_idle_power_optimizations)(struct dc *dc, bool enable);
 
+	bool (*does_plane_fit_in_mall)(struct dc *dc, struct dc_plane_state *plane);
+
 	bool (*is_abm_supported)(struct dc *dc,
 			struct dc_state *context, struct dc_stream_state *stream);