9313294efe
Remove the line "For use for simulation and test purposes only" in files were AMD is the only copyright holder listed in the header. This happens to be the case for all files where this line exists, removing it completely from gem5. Change-Id: I623f266b002f564301b28774f49081099cfc60fd Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53943 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/*
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* Copyright (c) 2015 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "gpu-compute/simple_pool_manager.hh"
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#include "base/logging.hh"
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namespace gem5
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{
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// return the min number of elements that the manager can reserve given
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// a request for "size" elements
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uint32_t
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SimplePoolManager::minAllocatedElements(uint32_t size)
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{
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fatal_if(size <= 0 || size > poolSize(), "Illegal VGPR region size=%d\n",
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size);
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return size % minAllocation() > 0 ?
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(minAllocation() - (size % minAllocation())) + size : size;
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}
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std::string
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SimplePoolManager::printRegion()
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{
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std::string _cout;
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if (_reservedGroups == 0)
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_cout = "VRF is empty\n";
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else if (_reservedGroups > 0) {
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uint32_t reservedEntries = _reservedGroups * _regionSize;
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_cout = "VRF reserves " + std::to_string(reservedEntries) + " VGPRs\n";
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}
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return _cout;
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}
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bool
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SimplePoolManager::canAllocate(uint32_t numRegions, uint32_t size)
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{
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return _reservedGroups == 0;
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}
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void
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SimplePoolManager::freeRegion(uint32_t firstIdx, uint32_t lastIdx)
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{
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assert(_reservedGroups > 0);
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--_reservedGroups;
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if (!_reservedGroups)
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_nxtFreeIdx = 0;
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}
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uint32_t
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SimplePoolManager::allocateRegion(const uint32_t size,
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uint32_t *reservedPoolSize)
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{
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uint32_t actualSize = minAllocatedElements(size);
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uint32_t startIdx = _nxtFreeIdx;
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_nxtFreeIdx += actualSize;
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_regionSize = actualSize;
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assert(_nxtFreeIdx < poolSize());
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*reservedPoolSize = actualSize;
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++_reservedGroups;
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return startIdx;
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}
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uint32_t
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SimplePoolManager::regionSize(std::pair<uint32_t, uint32_t> ®ion)
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{
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bool wrapAround = (region.first > region.second);
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if (!wrapAround) {
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return region.second - region.first + 1;
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} else {
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return region.second + poolSize() - region.first + 1;
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}
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}
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} // namespace gem5
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