From: Lee, Alvin Alvin.Lee2@amd.com
[ Upstream commit 5c1a431aaf52bbba8b6e2c4e9b4037a09509c0e3 ]
[Description] Regkey option for forcing num ways for subvp for debug purposes
Tested-by: Daniel Wheeler daniel.wheeler@amd.com Reviewed-by: Jun Lei Jun.Lei@amd.com Acked-by: Pavle Kotarac Pavle.Kotarac@amd.com Signed-off-by: Alvin Lee Alvin.Lee2@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Stable-dep-of: 4d2852412306 ("drm/amd/display: Fix calculation for cursor CAB allocation") Signed-off-by: Sasha Levin sashal@kernel.org --- 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; }