drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c
Extension
.c
Size
296140 bytes
Lines
7618
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (VStartup * LineTime < *TSetup + *Tdmdl + Tdmbf + Tdmec + Tdmsks) {
			*NotEnoughTimeForDynamicMetadata = true;
			dml_print("DML::%s: Not Enough Time for Dynamic Meta!\n", __func__);
			dml_print("DML::%s: Tdmbf: %fus - time for dmd transfer from dchub to dio output buffer\n", __func__, Tdmbf);
			dml_print("DML::%s: Tdmec: %fus - time dio takes to transfer dmd\n", __func__, Tdmec);
			dml_print("DML::%s: Tdmsks: %fus - time before active dmd must complete transmission at dio\n", __func__, Tdmsks);
			dml_print("DML::%s: Tdmdl: %fus - time for fabric to become ready and fetch dmd\n", __func__, *Tdmdl);
		} else {
			*NotEnoughTimeForDynamicMetadata = false;
		}
	} else {
		*NotEnoughTimeForDynamicMetadata = false;
	}

	*Tdmdl_vm = (DynamicMetadataEnable == true && DynamicMetadataVMEnabled == true && GPUVMEnable == true ? TWait + Tvm_trips : 0);

	if (myPipe->ScalerEnabled)
		DPPCycles = (unsigned int)(DPPCLKDelaySubtotalPlusCNVCFormater + DPPCLKDelaySCL);
	else
		DPPCycles = (unsigned int)(DPPCLKDelaySubtotalPlusCNVCFormater + DPPCLKDelaySCLLBOnly);

	DPPCycles = (unsigned int)(DPPCycles + myPipe->NumberOfCursors * DPPCLKDelayCNVCCursor);

	DISPCLKCycles = (unsigned int)DISPCLKDelaySubtotal;

	if (myPipe->DPPCLK == 0.0 || myPipe->DISPCLK == 0.0)
		return true;

	*DSTXAfterScaler = DPPCycles * myPipe->PixelClock / myPipe->DPPCLK + DISPCLKCycles * myPipe->PixelClock / myPipe->DISPCLK + DSCDelay;

#ifdef __DML_VBA_DEBUG__
	dml_print("DML::%s: DPPCycles: %d\n", __func__, DPPCycles);
	dml_print("DML::%s: PixelClock: %f\n", __func__, myPipe->PixelClock);
	dml_print("DML::%s: DPPCLK: %f\n", __func__, myPipe->DPPCLK);
	dml_print("DML::%s: DISPCLKCycles: %d\n", __func__, DISPCLKCycles);
	dml_print("DML::%s: DISPCLK: %f\n", __func__, myPipe->DISPCLK);
	dml_print("DML::%s: DSCDelay: %d\n", __func__, DSCDelay);
	dml_print("DML::%s: DSTXAfterScaler: %d\n", __func__, *DSTXAfterScaler);
	dml_print("DML::%s: ODMCombineIsEnabled: %d\n", __func__, myPipe->ODMCombineIsEnabled);
#endif

	*DSTXAfterScaler = *DSTXAfterScaler + ((myPipe->ODMCombineIsEnabled) ? 18 : 0) + (myPipe->DPPPerPlane - 1) * DPP_RECOUT_WIDTH;

	if (OutputFormat == dm_420 || (myPipe->InterlaceEnable && myPipe->ProgressiveToInterlaceUnitInOPP))
		*DSTYAfterScaler = 1;
	else
		*DSTYAfterScaler = 0;

	DSTTotalPixelsAfterScaler = *DSTYAfterScaler * myPipe->HTotal + *DSTXAfterScaler;
	*DSTYAfterScaler = dml_floor(DSTTotalPixelsAfterScaler / myPipe->HTotal, 1);
	*DSTXAfterScaler = DSTTotalPixelsAfterScaler - ((double) (*DSTYAfterScaler * myPipe->HTotal));

#ifdef __DML_VBA_DEBUG__
	dml_print("DML::%s: DSTXAfterScaler: %d (final)\n", __func__, *DSTXAfterScaler);
#endif

	MyError = false;

	Tr0_trips = trip_to_mem * (HostVMDynamicLevelsTrips + 1);
	Tvm_trips_rounded = dml_ceil(4.0 * Tvm_trips / LineTime, 1) / 4 * LineTime;
	Tr0_trips_rounded = dml_ceil(4.0 * Tr0_trips / LineTime, 1) / 4 * LineTime;

#ifdef __DML_VBA_ALLOW_DELTA__
	if (!myPipe->DCCEnable) {
		Tr0_trips = 0.0;
		Tr0_trips_rounded = 0.0;
	}
#endif

	if (!GPUVMEnable) {
		Tvm_trips = 0.0;
		Tvm_trips_rounded = 0.0;
	}

	if (GPUVMEnable) {
		if (GPUVMPageTableLevels >= 3) {
			*Tno_bw = UrgentExtraLatency + trip_to_mem * ((GPUVMPageTableLevels - 2) - 1);
		} else {
			*Tno_bw = 0;
		}
	} else if (!myPipe->DCCEnable) {
		*Tno_bw = LineTime;
	} else {
		*Tno_bw = LineTime / 4;
	}

	if (myPipe->SourcePixelFormat == dm_420_8 || myPipe->SourcePixelFormat == dm_420_10 || myPipe->SourcePixelFormat == dm_420_12)
		bytes_pp = myPipe->BytePerPixelY + myPipe->BytePerPixelC / 4;
	else
		bytes_pp = myPipe->BytePerPixelY + myPipe->BytePerPixelC;

Annotation

Implementation Notes