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/*
* Copyright (C) 2021-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include <stdint.h>
namespace NEO {
struct MemAdviseFlags {
union {
uint8_t allFlags; /* all memAdvise flags */
struct
{
uint8_t readOnly : 1; /* ZE_MEMORY_ADVICE_SET_READ_MOSTLY or ZE_MEMORY_ADVICE_CLEAR_READ_MOSTLY */
uint8_t devicePreferredLocation : 1; /* ZE_MEMORY_ADVICE_SET_PREFERRED_LOCATION or ZE_MEMORY_ADVICE_CLEAR_PREFERRED_LOCATION */
uint8_t nonAtomic : 1; /* ZE_MEMORY_ADVICE_SET_NON_ATOMIC_MOSTLY or ZE_MEMORY_ADVICE_CLEAR_NON_ATOMIC_MOSTLY */
uint8_t cachedMemory : 1; /* ZE_MEMORY_ADVICE_BIAS_CACHED or ZE_MEMORY_ADVICE_BIAS_UNCACHED */
uint8_t cpuMigrationBlocked : 1; /* ZE_MEMORY_ADVICE_SET_READ_MOSTLY and ZE_MEMORY_ADVICE_SET_PREFERRED_LOCATION */
uint8_t systemPreferredLocation : 1; /* ZE_MEMORY_ADVICE_SET_SYSTEM_MEMORY_PREFERRED_LOCATION or ZE_MEMORY_ADVICE_CLEAR_SYSTEM_MEMORY_PREFERRED_LOCATION */
uint8_t reserved1 : 1;
uint8_t reserved0 : 1;
};
};
MemAdviseFlags() {
allFlags = 0;
cachedMemory = 1;
}
};
static_assert(sizeof(MemAdviseFlags) == sizeof(uint8_t), "");
enum class MemAdvise : uint8_t {
setReadMostly = 0, /* hint that memory will be read from frequently and written to rarely */
clearReadMostly, /* removes the effect of SetReadMostly */
setPreferredLocation, /* hint that the preferred memory location is the specified device */
clearPreferredLocation, /* removes the effect of SetPreferredLocation */
setNonAtomicMostly, /* hints that memory will mostly be accessed non-atomically */
clearNonAtomicMostly, /* removes the effect of SetNonAtomicMostly */
biasCached, /* hints that memory should be cached */
biasUncached, /* hints that memory should not be cached */
setSystemMemoryPreferredLocation, /* hint that the preferred memory location is host memory */
clearSystemMemoryPreferredLocation, /* removes the effect of SetSystemMemoryPreferredLocation */
invalidAdvise /* invalid advise */
};
} // namespace NEO
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