From: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx>
DML does not take the fact that dcn315 does not have enough detile
buffer to max all pipes. This change adds a workaround to apply
the same logic DC does when calculating detile buffer size in DML.
Reviewed-by: Charlene Liu <Charlene.Liu@xxxxxxx>
Acked-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx>
---
.../gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c | 2 +-
.../display/dc/dml/dcn31/display_mode_vba_31.c | 15 +++++++++++++++
.../gpu/drm/amd/display/dc/dml/display_mode_lib.c | 1 +
.../gpu/drm/amd/display/dc/dml/display_mode_lib.h | 1 +
4 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c
index 5dbd363b275b..87bfc42bdaaf 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c
@@ -692,7 +692,7 @@ void dcn315_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_param
}
if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment))
- dml_init_instance(&dc->dml, &dcn3_15_soc, &dcn3_15_ip, DML_PROJECT_DCN31);
+ dml_init_instance(&dc->dml, &dcn3_15_soc, &dcn3_15_ip, DML_PROJECT_DCN315);
else
dml_init_instance(&dc->dml, &dcn3_15_soc, &dcn3_15_ip, DML_PROJECT_DCN31_FPGA);
}
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
index 8dfe639b6508..b612edb14417 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
@@ -43,6 +43,8 @@
#define BPP_BLENDED_PIPE 0xffffffff
#define DCN31_MAX_DSC_IMAGE_WIDTH 5184
#define DCN31_MAX_FMT_420_BUFFER_WIDTH 4096
+#define DCN3_15_MIN_COMPBUF_SIZE_KB 128
+#define DCN3_15_MAX_DET_SIZE 384
// For DML-C changes that hasn't been propagated to VBA yet
//#define __DML_VBA_ALLOW_DELTA__
@@ -3775,6 +3777,17 @@ static noinline void CalculatePrefetchSchedulePerPlane(
&v->VReadyOffsetPix[k]);
}
+static void PatchDETBufferSizeInKByte(unsigned int NumberOfActivePlanes, int NoOfDPPThisState[], unsigned int config_return_buffer_size_in_kbytes, unsigned int *DETBufferSizeInKByte)
+{
+ int i, total_pipes = 0;
+ for (i = 0; i < NumberOfActivePlanes; i++)
+ total_pipes += NoOfDPPThisState[i];
+ *DETBufferSizeInKByte = ((config_return_buffer_size_in_kbytes - DCN3_15_MIN_COMPBUF_SIZE_KB) / 64 / total_pipes) * 64;
+ if (*DETBufferSizeInKByte > DCN3_15_MAX_DET_SIZE)
+ *DETBufferSizeInKByte = DCN3_15_MAX_DET_SIZE;
+}
+
+
void dml31_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib)
{
struct vba_vars_st *v = &mode_lib->vba;
@@ -4533,6 +4546,8 @@ void dml31_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
v->ODMCombineEnableThisState[k] = v->ODMCombineEnablePerState[i][k];
}
+ if (v->NumberOfActivePlanes > 1 && mode_lib->project == DML_PROJECT_DCN315)
+ PatchDETBufferSizeInKByte(v->NumberOfActivePlanes, v->NoOfDPPThisState, v->ip.config_return_buffer_size_in_kbytes, &v->DETBufferSizeInKByte[0]);
CalculateSwathAndDETConfiguration(
false,
v->NumberOfActivePlanes,
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.c b/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.c
index f5400eda07a5..4125d3d111d1 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.c
@@ -114,6 +114,7 @@ void dml_init_instance(struct display_mode_lib *lib,
break;
case DML_PROJECT_DCN31:
case DML_PROJECT_DCN31_FPGA:
+ case DML_PROJECT_DCN315:
lib->funcs = dml31_funcs;
break;
case DML_PROJECT_DCN314:
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
index b1878a1440e2..3d643d50c3eb 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h
@@ -40,6 +40,7 @@ enum dml_project {
DML_PROJECT_DCN21,
DML_PROJECT_DCN30,
DML_PROJECT_DCN31,
+ DML_PROJECT_DCN315,
DML_PROJECT_DCN31_FPGA,
DML_PROJECT_DCN314,
DML_PROJECT_DCN32,
--
2.37.2
