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/*
*
* Copyright (C) 2019-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
* @file zer_nullddi.cpp
*
*/
#include "ze_null.h"
#include <cstring>
namespace driver
{
///////////////////////////////////////////////////////////////////////////////
/// @brief Intercept function for zerGetLastErrorDescription
__zedlllocal ze_result_t ZE_APICALL
zerGetLastErrorDescription(
const char** ppString ///< [in,out] pointer to a null-terminated array of characters describing
///< cause of error.
)
{
ze_result_t result = ZE_RESULT_SUCCESS;
// if the driver has created a custom function, then call it instead of using the generic path
auto pfnGetLastErrorDescription = context.zerDdiTable.Global.pfnGetLastErrorDescription;
if( nullptr != pfnGetLastErrorDescription )
{
result = pfnGetLastErrorDescription( ppString );
}
else
{
// generic implementation
}
char *env_str = context.setenv_var_with_driver_id("zerGetLastErrorDescription", ZEL_NULL_DRIVER_ID);
context.env_vars.push_back(env_str);
return result;
}
///////////////////////////////////////////////////////////////////////////////
/// @brief Intercept function for zerTranslateDeviceHandleToIdentifier
__zedlllocal uint32_t ZE_APICALL
zerTranslateDeviceHandleToIdentifier(
ze_device_handle_t hDevice ///< [in] handle of the device
)
{
uint32_t result {};
// if the driver has created a custom function, then call it instead of using the generic path
auto pfnTranslateDeviceHandleToIdentifier = context.zerDdiTable.Global.pfnTranslateDeviceHandleToIdentifier;
if( nullptr != pfnTranslateDeviceHandleToIdentifier )
{
result = pfnTranslateDeviceHandleToIdentifier( hDevice );
}
else
{
// generic implementation
}
char *env_str = context.setenv_var_with_driver_id("zerTranslateDeviceHandleToIdentifier", ZEL_NULL_DRIVER_ID);
context.env_vars.push_back(env_str);
return result;
}
///////////////////////////////////////////////////////////////////////////////
/// @brief Intercept function for zerTranslateIdentifierToDeviceHandle
__zedlllocal ze_device_handle_t ZE_APICALL
zerTranslateIdentifierToDeviceHandle(
uint32_t identifier ///< [in] integer identifier of the device
)
{
ze_device_handle_t result {};
// if the driver has created a custom function, then call it instead of using the generic path
auto pfnTranslateIdentifierToDeviceHandle = context.zerDdiTable.Global.pfnTranslateIdentifierToDeviceHandle;
if( nullptr != pfnTranslateIdentifierToDeviceHandle )
{
result = pfnTranslateIdentifierToDeviceHandle( identifier );
}
else
{
// generic implementation
}
char *env_str = context.setenv_var_with_driver_id("zerTranslateIdentifierToDeviceHandle", ZEL_NULL_DRIVER_ID);
context.env_vars.push_back(env_str);
return result;
}
///////////////////////////////////////////////////////////////////////////////
/// @brief Intercept function for zerGetDefaultContext
__zedlllocal ze_context_handle_t ZE_APICALL
zerGetDefaultContext(
void
)
{
ze_context_handle_t result {};
// if the driver has created a custom function, then call it instead of using the generic path
auto pfnGetDefaultContext = context.zerDdiTable.Global.pfnGetDefaultContext;
if( nullptr != pfnGetDefaultContext )
{
result = pfnGetDefaultContext( );
}
else
{
// generic implementation
}
char *env_str = context.setenv_var_with_driver_id("zerGetDefaultContext", ZEL_NULL_DRIVER_ID);
context.env_vars.push_back(env_str);
return result;
}
} // namespace driver
#if defined(__cplusplus)
extern "C" {
#endif
///////////////////////////////////////////////////////////////////////////////
/// @brief Exported function for filling application's Global table
/// with current process' addresses
///
/// @returns
/// - ::ZE_RESULT_SUCCESS
/// - ::ZE_RESULT_ERROR_INVALID_NULL_POINTER
/// - ::ZE_RESULT_ERROR_UNSUPPORTED_VERSION
ZE_DLLEXPORT ze_result_t ZE_APICALL
zerGetGlobalProcAddrTable(
ze_api_version_t version, ///< [in] API version requested
zer_global_dditable_t* pDdiTable ///< [in,out] pointer to table of DDI function pointers
)
{
auto zer_api_disable = getenv_string( "ZEL_TEST_NULL_DRIVER_DISABLE_ZER_API" );
#ifndef ZEL_NULL_DRIVER_ID
#define ZEL_NULL_DRIVER_ID 1
#endif
std::string null_driver_id_str = std::to_string(ZEL_NULL_DRIVER_ID);
auto zer_api_unsupported = (zer_api_disable == null_driver_id_str);
if(zer_api_unsupported)
return ZE_RESULT_ERROR_UNSUPPORTED_FEATURE;
if( nullptr == pDdiTable )
return ZE_RESULT_ERROR_INVALID_NULL_POINTER;
if( driver::context.version < version )
return ZE_RESULT_ERROR_UNSUPPORTED_VERSION;
ze_result_t result = ZE_RESULT_SUCCESS;
pDdiTable->pfnGetLastErrorDescription = driver::zerGetLastErrorDescription;
pDdiTable->pfnTranslateDeviceHandleToIdentifier = driver::zerTranslateDeviceHandleToIdentifier;
pDdiTable->pfnTranslateIdentifierToDeviceHandle = driver::zerTranslateIdentifierToDeviceHandle;
pDdiTable->pfnGetDefaultContext = driver::zerGetDefaultContext;
return result;
}
#if defined(__cplusplus)
};
#endif
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