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drm/amd/display: calculate the remain segments for all pipes

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[ Upstream commit d3069feecdb5542604d29b59acfd1fd213bad95b ]

[WHY]
In some cases the remain de-tile buffer segments will be greater
than zero if we don't add the non-top pipe to calculate, at
this time the override de-tile buffer size will be valid and used.
But it makes the de-tile buffer segments used finally for all of pipes
exceed the maximum.

[HOW]
Add the non-top pipe to calculate the remain de-tile buffer segments.
Don't set override size to use the average according to pipe count
if the value exceed the maximum.

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Zhikai Zhai <zhikai.zhai@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zhikai Zhai
2025-02-27 20:09:14 +08:00
committed by Greg Kroah-Hartman
parent 4c2a348875
commit 1da3dc7372
1 changed files with 19 additions and 21 deletions
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40
drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c
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@@ -1692,7 +1692,7 @@ static int dcn315_populate_dml_pipes_from_context(
pipes[pipe_cnt].dout.dsc_input_bpc = 0;
DC_FP_START();
dcn31_zero_pipe_dcc_fraction(pipes, pipe_cnt);
if (pixel_rate_crb && !pipe->top_pipe && !pipe->prev_odm_pipe) {
if (pixel_rate_crb) {
int bpp = source_format_to_bpp(pipes[pipe_cnt].pipe.src.source_format);
/* Ceil to crb segment size */
int approx_det_segs_required_for_pstate = dcn_get_approx_det_segs_required_for_pstate(
@@ -1749,28 +1749,26 @@ static int dcn315_populate_dml_pipes_from_context(
continue;
}
if (!pipe->top_pipe && !pipe->prev_odm_pipe) {
bool split_required = pipe->stream->timing.pix_clk_100hz >= dcn_get_max_non_odm_pix_rate_100hz(&dc->dml.soc)
|| (pipe->plane_state && pipe->plane_state->src_rect.width > 5120);
bool split_required = pipe->stream->timing.pix_clk_100hz >= dcn_get_max_non_odm_pix_rate_100hz(&dc->dml.soc)
|| (pipe->plane_state && pipe->plane_state->src_rect.width > 5120);
if (remaining_det_segs > MIN_RESERVED_DET_SEGS && crb_pipes != 0)
pipes[pipe_cnt].pipe.src.det_size_override += (remaining_det_segs - MIN_RESERVED_DET_SEGS) / crb_pipes +
(crb_idx < (remaining_det_segs - MIN_RESERVED_DET_SEGS) % crb_pipes ? 1 : 0);
if (pipes[pipe_cnt].pipe.src.det_size_override > 2 * DCN3_15_MAX_DET_SEGS) {
/* Clamp to 2 pipe split max det segments */
remaining_det_segs += pipes[pipe_cnt].pipe.src.det_size_override - 2 * (DCN3_15_MAX_DET_SEGS);
pipes[pipe_cnt].pipe.src.det_size_override = 2 * DCN3_15_MAX_DET_SEGS;
}
if (pipes[pipe_cnt].pipe.src.det_size_override > DCN3_15_MAX_DET_SEGS || split_required) {
/* If we are splitting we must have an even number of segments */
remaining_det_segs += pipes[pipe_cnt].pipe.src.det_size_override % 2;
pipes[pipe_cnt].pipe.src.det_size_override -= pipes[pipe_cnt].pipe.src.det_size_override % 2;
}
/* Convert segments into size for DML use */
pipes[pipe_cnt].pipe.src.det_size_override *= DCN3_15_CRB_SEGMENT_SIZE_KB;
crb_idx++;
if (remaining_det_segs > MIN_RESERVED_DET_SEGS && crb_pipes != 0)
pipes[pipe_cnt].pipe.src.det_size_override += (remaining_det_segs - MIN_RESERVED_DET_SEGS) / crb_pipes +
(crb_idx < (remaining_det_segs - MIN_RESERVED_DET_SEGS) % crb_pipes ? 1 : 0);
if (pipes[pipe_cnt].pipe.src.det_size_override > 2 * DCN3_15_MAX_DET_SEGS) {
/* Clamp to 2 pipe split max det segments */
remaining_det_segs += pipes[pipe_cnt].pipe.src.det_size_override - 2 * (DCN3_15_MAX_DET_SEGS);
pipes[pipe_cnt].pipe.src.det_size_override = 2 * DCN3_15_MAX_DET_SEGS;
}
if (pipes[pipe_cnt].pipe.src.det_size_override > DCN3_15_MAX_DET_SEGS || split_required) {
/* If we are splitting we must have an even number of segments */
remaining_det_segs += pipes[pipe_cnt].pipe.src.det_size_override % 2;
pipes[pipe_cnt].pipe.src.det_size_override -= pipes[pipe_cnt].pipe.src.det_size_override % 2;
}
/* Convert segments into size for DML use */
pipes[pipe_cnt].pipe.src.det_size_override *= DCN3_15_CRB_SEGMENT_SIZE_KB;
crb_idx++;
pipe_cnt++;
}
}