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Add BB_START prepatching WA - disabled by default

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Signed-off-by: Bartosz Dunajski <bartosz.dunajski@intel.com>
This commit is contained in:
Bartosz Dunajski
2022-03-10 13:34:16 +00:00
committed by Compute-Runtime-Automation
parent 1b4319fdab
commit 79fedd59e4
4 changed files with 53 additions and 12 deletions
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23
shared/source/command_stream/command_stream_receiver_hw_base.inl
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@@ -94,13 +94,21 @@ inline void CommandStreamReceiverHw<GfxFamily>::addBatchBufferEnd(LinearStream &
template <typename GfxFamily>
inline void CommandStreamReceiverHw<GfxFamily>::programEndingCmd(LinearStream &commandStream, Device &device, void **patchLocation, bool directSubmissionEnabled) {
if (directSubmissionEnabled) {
uint64_t startAddress = 0;
if (DebugManager.flags.BatchBufferStartPrepatchingWaEnabled.get() == 1) {
startAddress = commandStream.getGraphicsAllocation()->getGpuAddress() + commandStream.getUsed();
}
*patchLocation = commandStream.getSpace(sizeof(MI_BATCH_BUFFER_START));
auto bbStart = reinterpret_cast<MI_BATCH_BUFFER_START *>(*patchLocation);
MI_BATCH_BUFFER_START cmd = {};
addBatchBufferStart(&cmd, 0ull, false);
addBatchBufferStart(&cmd, startAddress, false);
*bbStart = cmd;
} else {
PreemptionHelper::programStateSipEndWa<GfxFamily>(commandStream, device);
if (!EngineHelpers::isBcs(osContext->getEngineType())) {
PreemptionHelper::programStateSipEndWa<GfxFamily>(commandStream, device);
}
this->addBatchBufferEnd(commandStream, patchLocation);
}
}
@@ -1091,16 +1099,7 @@ uint32_t CommandStreamReceiverHw<GfxFamily>::flushBcsTask(const BlitPropertiesCo
}
void *endingCmdPtr = nullptr;
if (blitterDirectSubmission) {
endingCmdPtr = commandStream.getSpace(0);
EncodeBatchBufferStartOrEnd<GfxFamily>::programBatchBufferStart(&commandStream,
0ull,
false);
} else {
auto batchBufferEnd = reinterpret_cast<MI_BATCH_BUFFER_END *>(
commandStream.getSpace(sizeof(MI_BATCH_BUFFER_END)));
*batchBufferEnd = GfxFamily::cmdInitBatchBufferEnd;
}
programEndingCmd(commandStream, device, &endingCmdPtr, blitterDirectSubmission);
EncodeNoop<GfxFamily>::alignToCacheLine(commandStream);

1
shared/source/debug_settings/debug_variables_base.inl
View File

@@ -195,6 +195,7 @@ DECLARE_DEBUG_VARIABLE(int32_t, OverridePatIndex, -1, "-1: default, >=0: PatInde
DECLARE_DEBUG_VARIABLE(int32_t, UseTileMemoryBankInVirtualMemoryCreation, -1, "-1: default - on, 0: do not assign tile memory bank to virtual memory space, 1: assign tile memory bank to virtual memory space")
DECLARE_DEBUG_VARIABLE(int32_t, OverrideTimestampEvents, -1, "-1: default (based on user settings), 0: Force disable timestamp events (no timestamps will be reported), 1: Force enable timestamp events")
DECLARE_DEBUG_VARIABLE(int32_t, ForcePreParserEnabledForMiArbCheck, -1, "-1: default , 0: PreParser disabled, 1: PreParser enabled")
DECLARE_DEBUG_VARIABLE(int32_t, BatchBufferStartPrepatchingWaEnabled, -1, "-1: default , 0: disabled, 1: enabled. WA applies valid VA pointing to 'self' instead of 0x0. This mitigates incorrect VA preparsing.")
DECLARE_DEBUG_VARIABLE(bool, DisableScratchPages, false, "Disable scratch pages during VM creations")
/*LOGGING FLAGS*/
DECLARE_DEBUG_VARIABLE(int32_t, PrintDriverDiagnostics, -1, "prints driver diagnostics messages to standard output, value corresponds to hint level")