From: Lee, Alvin <Alvin.Lee2@xxxxxxx>
[ Upstream commit 5c1a431aaf52bbba8b6e2c4e9b4037a09509c0e3 ]
[Description]
Regkey option for forcing num ways for subvp for debug purposes
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Reviewed-by: Jun Lei <Jun.Lei@xxxxxxx>
Acked-by: Pavle Kotarac <Pavle.Kotarac@xxxxxxx>
Signed-off-by: Alvin Lee <Alvin.Lee2@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Stable-dep-of: 4d2852412306 ("drm/amd/display: Fix calculation for cursor CAB allocation")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
.../drm/amd/display/dc/dcn32/dcn32_resource_helpers.c | 11 ++++++++---
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index dbf8158b832e..a652dec5d02f 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -746,6 +746,7 @@ struct dc_debug_options {
bool force_disable_subvp;
bool force_subvp_mclk_switch;
bool allow_sw_cursor_fallback;
+ unsigned int force_subvp_num_ways;
bool force_usr_allow;
/* uses value at boot and disables switch */
bool disable_dtb_ref_clk_switch;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
index 13cd1f2e50ca..7c37575d69c7 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
@@ -54,13 +54,14 @@ uint32_t dcn32_helper_calculate_num_ways_for_subvp(struct dc *dc, struct dc_stat
uint32_t num_mblks = 0;
uint32_t cache_lines_per_plane = 0;
uint32_t i = 0, j = 0;
- uint32_t mblk_width = 0;
- uint32_t mblk_height = 0;
+ uint16_t mblk_width = 0;
+ uint16_t mblk_height = 0;
uint32_t full_vp_width_blk_aligned = 0;
uint32_t full_vp_height_blk_aligned = 0;
uint32_t mall_alloc_width_blk_aligned = 0;
uint32_t mall_alloc_height_blk_aligned = 0;
- uint32_t full_vp_height = 0;
+ uint16_t full_vp_height = 0;
+ bool subvp_in_use = false;
for (i = 0; i < dc->res_pool->pipe_count; i++) {
struct pipe_ctx *pipe = &context->res_ctx.pipe_ctx[i];
@@ -70,6 +71,7 @@ uint32_t dcn32_helper_calculate_num_ways_for_subvp(struct dc *dc, struct dc_stat
pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) {
struct pipe_ctx *main_pipe = NULL;
+ subvp_in_use = true;
/* Get full viewport height from main pipe (required for MBLK calculation) */
for (j = 0; j < dc->res_pool->pipe_count; j++) {
main_pipe = &context->res_ctx.pipe_ctx[j];
@@ -129,6 +131,9 @@ uint32_t dcn32_helper_calculate_num_ways_for_subvp(struct dc *dc, struct dc_stat
if (cache_lines_used % lines_per_way > 0)
num_ways++;
+ if (subvp_in_use && dc->debug.force_subvp_num_ways > 0)
+ num_ways = dc->debug.force_subvp_num_ways;
+
return num_ways;
}
--
2.35.1
