compute-runtime/runtime/gen8/gpgpu_walker_gen8.cpp

/*
 * Copyright (C) 2018 Intel Corporation
 *
 * SPDX-License-Identifier: MIT
 *
 */

#include "runtime/gen8/hw_info.h"
#include "runtime/command_queue/gpgpu_walker.h"
#include "runtime/command_queue/gpgpu_walker.inl"
#include "runtime/command_queue/hardware_interface.h"
#include "runtime/command_queue/hardware_interface.inl"
#include "runtime/command_queue/hardware_interface_base.inl"

namespace OCLRT {

template <>
void GpgpuWalkerHelper<BDWFamily>::applyWADisableLSQCROPERFforOCL(OCLRT::LinearStream *pCommandStream, const Kernel &kernel, bool disablePerfMode) {
    if (disablePerfMode) {
        if (kernel.getKernelInfo().patchInfo.executionEnvironment->UsesFencesForReadWriteImages) {
            // Set bit L3SQC_BIT_LQSC_RO_PERF_DIS in L3SQC_REG4
            GpgpuWalkerHelper<BDWFamily>::addAluReadModifyWriteRegister(pCommandStream, L3SQC_REG4, ALU_OPCODE_OR, L3SQC_BIT_LQSC_RO_PERF_DIS);
        }
    } else {
        if (kernel.getKernelInfo().patchInfo.executionEnvironment->UsesFencesForReadWriteImages) {
            // Add PIPE_CONTROL with CS_Stall to wait till GPU finishes its work
            typedef typename BDWFamily::PIPE_CONTROL PIPE_CONTROL;
            auto pCmd = reinterpret_cast<PIPE_CONTROL *>(pCommandStream->getSpace(sizeof(PIPE_CONTROL)));
            *pCmd = PIPE_CONTROL::sInit();
            pCmd->setCommandStreamerStallEnable(true);
            // Clear bit L3SQC_BIT_LQSC_RO_PERF_DIS in L3SQC_REG4
            GpgpuWalkerHelper<BDWFamily>::addAluReadModifyWriteRegister(pCommandStream, L3SQC_REG4, ALU_OPCODE_AND, ~L3SQC_BIT_LQSC_RO_PERF_DIS);
        }
    }
}

template <>
size_t GpgpuWalkerHelper<BDWFamily>::getSizeForWADisableLSQCROPERFforOCL(const Kernel *pKernel) {
    typedef typename BDWFamily::MI_LOAD_REGISTER_REG MI_LOAD_REGISTER_REG;
    typedef typename BDWFamily::MI_LOAD_REGISTER_IMM MI_LOAD_REGISTER_IMM;
    typedef typename BDWFamily::PIPE_CONTROL PIPE_CONTROL;
    typedef typename BDWFamily::MI_MATH MI_MATH;
    typedef typename BDWFamily::MI_MATH_ALU_INST_INLINE MI_MATH_ALU_INST_INLINE;
    size_t n = 0;
    if ((pKernel != nullptr) && pKernel->getKernelInfo().patchInfo.executionEnvironment->UsesFencesForReadWriteImages) {
        n += sizeof(PIPE_CONTROL) +
             (2 * sizeof(MI_LOAD_REGISTER_REG) +
              sizeof(MI_LOAD_REGISTER_IMM) +
              sizeof(PIPE_CONTROL) +
              sizeof(MI_MATH) +
              NUM_ALU_INST_FOR_READ_MODIFY_WRITE * sizeof(MI_MATH_ALU_INST_INLINE)) *
                 2; // For 2 WADisableLSQCROPERFforOCL WAs
    }
    return n;
}

template class HardwareInterface<BDWFamily>;

template class GpgpuWalkerHelper<BDWFamily>;

template struct EnqueueOperation<BDWFamily>;

} // namespace OCLRT