From: Gabe Teeger Gabe.Teeger@amd.com
[what] Graphics hang observed with 3 displays connected to DP2.0 mst dock.
[why] There's a mismatch in dml and dc between the assignments of hpo link encoders.
[how] Add a new array in dml that tracks the current mapping of HPO stream encoders to HPO link encoders in dc.
Cc: stable@vger.kernel.org Reviewed-by: Sung joon Kim sungjoon.kim@amd.com Reviewed-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Signed-off-by: Gabe Teeger Gabe.Teeger@amd.com Signed-off-by: Hamza Mahfooz hamza.mahfooz@amd.com --- .../amd/display/dc/dml2/dml2_internal_types.h | 2 +- .../display/dc/dml2/dml2_translation_helper.c | 67 +++++++++---------- .../display/dc/dml2/dml2_translation_helper.h | 2 +- .../gpu/drm/amd/display/dc/dml2/dml2_utils.c | 12 +--- 4 files changed, 34 insertions(+), 49 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_internal_types.h b/drivers/gpu/drm/amd/display/dc/dml2/dml2_internal_types.h index 3ba184be25d3..140ec01545db 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_internal_types.h +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_internal_types.h @@ -101,7 +101,7 @@ struct dml2_wrapper_scratch { struct dml2_dml_to_dc_pipe_mapping dml_to_dc_pipe_mapping; bool enable_flexible_pipe_mapping; bool plane_duplicate_exists; - unsigned int dp2_mst_stream_count; + int hpo_stream_to_link_encoder_mapping[MAX_HPO_DP2_ENCODERS]; };
struct dml2_helper_det_policy_scratch { diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c index 7e39873832bf..bde4250853b1 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c @@ -733,8 +733,7 @@ static void populate_dml_timing_cfg_from_stream_state(struct dml_timing_cfg_st * }
static void populate_dml_output_cfg_from_stream_state(struct dml_output_cfg_st *out, unsigned int location, - const struct dc_stream_state *in, const struct pipe_ctx *pipe, - unsigned int dp2_mst_stream_count) + const struct dc_stream_state *in, const struct pipe_ctx *pipe, struct dml2_context *dml2) { unsigned int output_bpc;
@@ -747,8 +746,8 @@ static void populate_dml_output_cfg_from_stream_state(struct dml_output_cfg_st * case SIGNAL_TYPE_DISPLAY_PORT_MST: case SIGNAL_TYPE_DISPLAY_PORT: out->OutputEncoder[location] = dml_dp; - if (is_dp2p0_output_encoder(pipe, dp2_mst_stream_count)) - out->OutputEncoder[location] = dml_dp2p0; + if (dml2->v20.scratch.hpo_stream_to_link_encoder_mapping[location] != -1) + out->OutputEncoder[dml2->v20.scratch.hpo_stream_to_link_encoder_mapping[location]] = dml_dp2p0; break; case SIGNAL_TYPE_EDP: out->OutputEncoder[location] = dml_edp; @@ -1199,36 +1198,6 @@ static void dml2_populate_pipe_to_plane_index_mapping(struct dml2_context *dml2, } }
-static unsigned int calculate_dp2_mst_stream_count(struct dc_state *context) -{ - int i, j; - unsigned int dp2_mst_stream_count = 0; - - for (i = 0; i < context->stream_count; i++) { - struct dc_stream_state *stream = context->streams[i]; - - if (!stream || stream->signal != SIGNAL_TYPE_DISPLAY_PORT_MST) - continue; - - for (j = 0; j < MAX_PIPES; j++) { - struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[j]; - - if (!pipe_ctx || !pipe_ctx->stream) - continue; - - if (stream != pipe_ctx->stream) - continue; - - if (pipe_ctx->stream_res.hpo_dp_stream_enc && pipe_ctx->link_res.hpo_dp_link_enc) { - dp2_mst_stream_count++; - break; - } - } - } - - return dp2_mst_stream_count; -} - static void populate_dml_writeback_cfg_from_stream_state(struct dml_writeback_cfg_st *out, unsigned int location, const struct dc_stream_state *in) { @@ -1269,6 +1238,30 @@ static void populate_dml_writeback_cfg_from_stream_state(struct dml_writeback_cf } } } + +static void dml2_map_hpo_stream_encoder_to_hpo_link_encoder_index(struct dml2_context *dml2, struct dc_state *context) +{ + int i; + struct pipe_ctx *current_pipe_context; + + /* Scratch gets reset to zero in dml, but link encoder instance can be zero, so reset to -1 */ + for (i = 0; i < MAX_HPO_DP2_ENCODERS; i++) { + dml2->v20.scratch.hpo_stream_to_link_encoder_mapping[i] = -1; + } + + /* If an HPO stream encoder is allocated to a pipe, get the instance of it's allocated HPO Link encoder */ + for (i = 0; i < MAX_PIPES; i++) { + current_pipe_context = &context->res_ctx.pipe_ctx[i]; + if (current_pipe_context->stream && + current_pipe_context->stream_res.hpo_dp_stream_enc && + current_pipe_context->link_res.hpo_dp_link_enc && + dc_is_dp_signal(current_pipe_context->stream->signal)) { + dml2->v20.scratch.hpo_stream_to_link_encoder_mapping[current_pipe_context->stream_res.hpo_dp_stream_enc->inst] = + current_pipe_context->link_res.hpo_dp_link_enc->inst; + } + } +} + void map_dc_state_into_dml_display_cfg(struct dml2_context *dml2, struct dc_state *context, struct dml_display_cfg_st *dml_dispcfg) { int i = 0, j = 0, k = 0; @@ -1291,8 +1284,8 @@ void map_dc_state_into_dml_display_cfg(struct dml2_context *dml2, struct dc_stat if (dml2->v20.dml_core_ctx.ip.hostvm_enable) dml2->v20.dml_core_ctx.policy.AllowForPStateChangeOrStutterInVBlankFinal = dml_prefetch_support_uclk_fclk_and_stutter;
- dml2->v20.scratch.dp2_mst_stream_count = calculate_dp2_mst_stream_count(context); dml2_populate_pipe_to_plane_index_mapping(dml2, context); + dml2_map_hpo_stream_encoder_to_hpo_link_encoder_index(dml2, context);
for (i = 0; i < context->stream_count; i++) { current_pipe_context = NULL; @@ -1313,7 +1306,7 @@ void map_dc_state_into_dml_display_cfg(struct dml2_context *dml2, struct dc_stat ASSERT(disp_cfg_stream_location >= 0 && disp_cfg_stream_location <= __DML2_WRAPPER_MAX_STREAMS_PLANES__);
populate_dml_timing_cfg_from_stream_state(&dml_dispcfg->timing, disp_cfg_stream_location, context->streams[i]); - populate_dml_output_cfg_from_stream_state(&dml_dispcfg->output, disp_cfg_stream_location, context->streams[i], current_pipe_context, dml2->v20.scratch.dp2_mst_stream_count); + populate_dml_output_cfg_from_stream_state(&dml_dispcfg->output, disp_cfg_stream_location, context->streams[i], current_pipe_context, dml2); /*Call site for populate_dml_writeback_cfg_from_stream_state*/ populate_dml_writeback_cfg_from_stream_state(&dml_dispcfg->writeback, disp_cfg_stream_location, context->streams[i]); @@ -1378,7 +1371,7 @@ void map_dc_state_into_dml_display_cfg(struct dml2_context *dml2, struct dc_stat
if (j >= 1) { populate_dml_timing_cfg_from_stream_state(&dml_dispcfg->timing, disp_cfg_plane_location, context->streams[i]); - populate_dml_output_cfg_from_stream_state(&dml_dispcfg->output, disp_cfg_plane_location, context->streams[i], current_pipe_context, dml2->v20.scratch.dp2_mst_stream_count); + populate_dml_output_cfg_from_stream_state(&dml_dispcfg->output, disp_cfg_plane_location, context->streams[i], current_pipe_context, dml2); switch (context->streams[i]->debug.force_odm_combine_segments) { case 2: dml2->v20.dml_core_ctx.policy.ODMUse[disp_cfg_plane_location] = dml_odm_use_policy_combine_2to1; diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.h b/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.h index 55659b22d87f..d764773938f4 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.h +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.h @@ -36,6 +36,6 @@ void dml2_translate_socbb_params(const struct dc *in_dc, struct soc_bounding_box void dml2_translate_soc_states(const struct dc *in_dc, struct soc_states_st *out, int num_states); void map_dc_state_into_dml_display_cfg(struct dml2_context *dml2, struct dc_state *context, struct dml_display_cfg_st *dml_dispcfg); void dml2_update_pipe_ctx_dchub_regs(struct _vcs_dpi_dml_display_rq_regs_st *rq_regs, struct _vcs_dpi_dml_display_dlg_regs_st *disp_dlg_regs, struct _vcs_dpi_dml_display_ttu_regs_st *disp_ttu_regs, struct pipe_ctx *out); -bool is_dp2p0_output_encoder(const struct pipe_ctx *pipe, unsigned int dp2_mst_stream_count); +bool is_dp2p0_output_encoder(const struct pipe_ctx *pipe);
#endif //__DML2_TRANSLATION_HELPER_H__ diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c b/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c index 9e8ff3a9718e..9a33158b63bf 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c @@ -153,7 +153,7 @@ unsigned int dml2_util_get_maximum_odm_combine_for_output(bool force_odm_4to1, e } }
-bool is_dp2p0_output_encoder(const struct pipe_ctx *pipe_ctx, unsigned int dp2_mst_stream_count) +bool is_dp2p0_output_encoder(const struct pipe_ctx *pipe_ctx) { if (pipe_ctx == NULL || pipe_ctx->stream == NULL) return false; @@ -161,14 +161,6 @@ bool is_dp2p0_output_encoder(const struct pipe_ctx *pipe_ctx, unsigned int dp2_m /* If this assert is hit then we have a link encoder dynamic management issue */ ASSERT(pipe_ctx->stream_res.hpo_dp_stream_enc ? pipe_ctx->link_res.hpo_dp_link_enc != NULL : true);
- /* Count MST hubs once by treating only 1st remote sink in topology as an encoder */ - if (pipe_ctx->stream->link && pipe_ctx->stream->link->remote_sinks[0] && dp2_mst_stream_count > 1) { - return (pipe_ctx->stream_res.hpo_dp_stream_enc && - pipe_ctx->link_res.hpo_dp_link_enc && - dc_is_dp_signal(pipe_ctx->stream->signal) && - (pipe_ctx->stream->link->remote_sinks[0]->sink_id == pipe_ctx->stream->sink->sink_id)); - } - return (pipe_ctx->stream_res.hpo_dp_stream_enc && pipe_ctx->link_res.hpo_dp_link_enc && dc_is_dp_signal(pipe_ctx->stream->signal)); @@ -181,7 +173,7 @@ bool is_dtbclk_required(const struct dc *dc, struct dc_state *context) for (i = 0; i < dc->res_pool->pipe_count; i++) { if (!context->res_ctx.pipe_ctx[i].stream) continue; - if (is_dp2p0_output_encoder(&context->res_ctx.pipe_ctx[i], context->bw_ctx.dml2->v20.scratch.dp2_mst_stream_count)) + if (is_dp2p0_output_encoder(&context->res_ctx.pipe_ctx[i])) return true; } return false;