Ben Sander
136 línte
3.7 KiB
C++
136 línte
3.7 KiB
C++
/*
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Copyright (c) 2015-2016 Advanced Micro Devices, Inc. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANNTY OF ANY KIND, EXPRESS OR
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IMPLIED, INNCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANNY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER INN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR INN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include "hip_runtime.h"
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#include "hcc_detail/hip_hcc.h"
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#include "hcc_detail/trace_helper.h"
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#define USE_PEER_TO_PEER 1
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/**
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* @warning HCC returns 0 in *canAccessPeer ; Need to update this function when RT supports P2P
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*/
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//---
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hipError_t hipDeviceCanAccessPeer ( int* canAccessPeer, int deviceId, int peerDeviceId)
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{
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HIP_INIT_API(canAccessPeer, deviceId, peerDeviceId);
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hipError_t err = hipSuccess;
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#if USE_PEER_TO_PEER
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auto device = ihipGetDevice(deviceId);
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auto peerDevice = ihipGetDevice(peerDeviceId);
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if ((device != NULL) && (peerDevice != NULL)) {
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#if USE_PEER_TO_PEER==2
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*canAccessPeer = peerDevice->_acc.is_peer(device->_acc);
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#else
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*canAccessPeer = 0;
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#endif
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} else {
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*canAccessPeer = false;
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err = hipErrorInvalidDevice;
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}
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#else
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*canAccessPeer = false;
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#endif
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return ihipLogStatus(err);
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}
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/**
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* warning Need to update this function when RT supports P2P
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*/
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//---
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hipError_t hipDeviceDisablePeerAccess ( int peerDevice )
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{
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HIP_INIT_API(peerDevice);
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// TODO-p2p
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return ihipLogStatus(hipSuccess);
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};
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/**
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* @warning Need to update this function when RT supports P2P
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*/
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//---
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// Enable registering memory on peerDevice for direct access from the current device.
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hipError_t hipDeviceEnablePeerAccess (int peerDeviceId, unsigned int flags)
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{
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std::call_once(hip_initialized, ihipInit);
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hipError_t err = hipSuccess;
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#if USE_PEER_TO_PEER
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if (flags != 0) {
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err = hipErrorInvalidValue;
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} else {
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auto peerDevice = ihipGetDevice(peerDeviceId);
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if (peerDevice != NULL) {
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} else {
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err = hipErrorInvalidDevice;
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}
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}
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#endif
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return ihipLogStatus(err);
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}
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//---
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hipError_t hipMemcpyPeer ( void* dst, int dstDevice, const void* src, int srcDevice, size_t sizeBytes )
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{
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std::call_once(hip_initialized, ihipInit);
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// HCC has a unified memory architecture so device specifiers are not required.
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return hipMemcpy(dst, src, sizeBytes, hipMemcpyDefault);
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};
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/**
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* @bug This function uses a synchronous copy
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*/
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//---
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hipError_t hipMemcpyPeerAsync ( void* dst, int dstDevice, const void* src, int srcDevice, size_t sizeBytes, hipStream_t stream )
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{
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std::call_once(hip_initialized, ihipInit);
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// HCC has a unified memory architecture so device specifiers are not required.
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return hipMemcpyAsync(dst, src, sizeBytes, hipMemcpyDefault, stream);
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};
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/**
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* @return #hipSuccess
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*/
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//---
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hipError_t hipDriverGetVersion(int *driverVersion)
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{
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HIP_INIT_API(driverVersion);
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if (driverVersion) {
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*driverVersion = 4;
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}
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return ihipLogStatus(hipSuccess);
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}
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