compute-runtime/shared/source/gen12lp/preamble_gen12lp.cpp

/*
 * Copyright (C) 2019-2024 Intel Corporation
 *
 * SPDX-License-Identifier: MIT
 *
 */

#include "shared/source/command_stream/csr_definitions.h"
#include "shared/source/execution_environment/root_device_environment.h"
#include "shared/source/gen12lp/hw_cmds_base.h"
#include "shared/source/helpers/hw_info.h"
#include "shared/source/helpers/pipe_control_args.h"
#include "shared/source/helpers/pipeline_select_helper.h"
#include "shared/source/helpers/preamble_bdw_and_later.inl"

namespace NEO {

using Family = Gen12LpFamily;

template <>
uint32_t PreambleHelper<Family>::getL3Config(const HardwareInfo &hwInfo, bool useSLM) {
    uint32_t l3Config = 0;

    switch (hwInfo.platform.eProductFamily) {
    case IGFX_TIGERLAKE_LP:
        l3Config = getL3ConfigHelper<IGFX_TIGERLAKE_LP>(useSLM);
        break;
    default:
        l3Config = getL3ConfigHelper<IGFX_TIGERLAKE_LP>(true);
    }
    return l3Config;
}

template <>
void PreambleHelper<Family>::programPipelineSelect(LinearStream *pCommandStream,
                                                   const PipelineSelectArgs &pipelineSelectArgs,
                                                   const RootDeviceEnvironment &rootDeviceEnvironment) {

    using PIPELINE_SELECT = typename Family::PIPELINE_SELECT;

    if (MemorySynchronizationCommands<Family>::isBarrierPriorToPipelineSelectWaRequired(rootDeviceEnvironment)) {
        PipeControlArgs args;
        args.renderTargetCacheFlushEnable = true;
        MemorySynchronizationCommands<Family>::addSingleBarrier(*pCommandStream, args);
    }

    auto cmdSpace = pCommandStream->getSpaceForCmd<PIPELINE_SELECT>();
    PIPELINE_SELECT pipelineSelectCmd = Family::cmdInitPipelineSelect;

    auto mask = pipelineSelectEnablePipelineSelectMaskBits | pipelineSelectMediaSamplerDopClockGateMaskBits;
    auto pipeline = pipelineSelectArgs.is3DPipelineRequired ? PIPELINE_SELECT::PIPELINE_SELECTION_3D : PIPELINE_SELECT::PIPELINE_SELECTION_GPGPU;

    pipelineSelectCmd.setPipelineSelection(pipeline);
    pipelineSelectCmd.setMediaSamplerDopClockGateEnable(!pipelineSelectArgs.mediaSamplerRequired);

    if (pipelineSelectArgs.systolicPipelineSelectSupport) {
        mask |= pipelineSelectSystolicModeEnableMaskBits;
        pipelineSelectCmd.setSpecialModeEnable(pipelineSelectArgs.systolicPipelineSelectMode);
    }

    pipelineSelectCmd.setMaskBits(mask);

    *cmdSpace = pipelineSelectCmd;
}

template <>
size_t PreambleHelper<Family>::getCmdSizeForPipelineSelect(const RootDeviceEnvironment &rootDeviceEnvironment) {
    size_t size = 0;
    using PIPELINE_SELECT = typename Family::PIPELINE_SELECT;
    size += sizeof(PIPELINE_SELECT);
    if (MemorySynchronizationCommands<Family>::isBarrierPriorToPipelineSelectWaRequired(rootDeviceEnvironment)) {
        size += sizeof(PIPE_CONTROL);
    }
    return size;
}

template <>
void PreambleHelper<Family>::addPipeControlBeforeVfeCmd(LinearStream *pCommandStream, const HardwareInfo *hwInfo, EngineGroupType engineGroupType) {
    PipeControlArgs args = {};
    if (hwInfo->workaroundTable.flags.waSendMIFLUSHBeforeVFE) {
        if (engineGroupType != EngineGroupType::compute) {
            args.renderTargetCacheFlushEnable = true;
            args.depthCacheFlushEnable = true;
            args.depthStallEnable = true;
        }
        args.dcFlushEnable = true;
    }

    MemorySynchronizationCommands<Family>::addSingleBarrier(*pCommandStream, args);
}

template <>
void PreambleHelper<Family>::programL3(LinearStream *pCommandStream, uint32_t l3Config, bool isBcs) {
}

template <>
uint32_t PreambleHelper<Family>::getUrbEntryAllocationSize() {
    return 1024u;
}

template <>
void PreambleHelper<Family>::appendProgramVFEState(const RootDeviceEnvironment &rootDeviceEnvironment, const StreamProperties &streamProperties, void *cmd) {
    FrontEndStateCommand *mediaVfeState = static_cast<FrontEndStateCommand *>(cmd);
    bool disableEUFusion = streamProperties.frontEndState.disableEUFusion.value == 1;
    auto &gfxCoreHelper = rootDeviceEnvironment.getHelper<GfxCoreHelper>();
    auto &hwInfo = *rootDeviceEnvironment.getHardwareInfo();
    if (!gfxCoreHelper.isFusedEuDispatchEnabled(hwInfo, disableEUFusion)) {
        mediaVfeState->setDisableSlice0Subslice2(true);
    }
    if (debugManager.flags.MediaVfeStateMaxSubSlices.get() != -1) {
        mediaVfeState->setMaximumNumberOfDualSubslices(debugManager.flags.MediaVfeStateMaxSubSlices.get());
    }
}

// Explicitly instantiate PreambleHelper for Gen12Lp device family
template struct PreambleHelper<Family>;
} // namespace NEO