07c613ff5e
Use a TranslationGen to iterate over the translations for a region, rather than using a ChunkGenerator with a fixed page size the device needs to know. Change-Id: I5da565232bd5282074ef279ca74e556daeffef70 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50763 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Matthew Poremba <matthew.poremba@amd.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Matthew Poremba <matthew.poremba@amd.com>
77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
/*
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* Copyright (c) 2021 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* For use for simulation and test purposes only
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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 "dev/dma_virt_device.hh"
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namespace gem5
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{
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void
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DmaVirtDevice::dmaReadVirt(Addr host_addr, unsigned size,
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DmaCallback *cb, void *data, Tick delay)
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{
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dmaVirt(&DmaDevice::dmaRead, host_addr, size, cb, data, delay);
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}
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void
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DmaVirtDevice::dmaWriteVirt(Addr host_addr, unsigned size,
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DmaCallback *cb, void *data, Tick delay)
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{
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dmaVirt(&DmaDevice::dmaWrite, host_addr, size, cb, data, delay);
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}
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void
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DmaVirtDevice::dmaVirt(DmaFnPtr dmaFn, Addr addr, unsigned size,
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DmaCallback *cb, void *data, Tick delay)
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{
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if (size == 0) {
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if (cb)
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schedule(cb->getChunkEvent(), curTick() + delay);
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return;
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}
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// move the buffer data pointer with the chunks
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uint8_t *loc_data = (uint8_t*)data;
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TranslationGenPtr gen = translate(addr, size);
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for (const auto &range: *gen) {
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fatal_if(range.fault, "Failed translation: vaddr 0x%x", range.vaddr);
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Event *event = cb ? cb->getChunkEvent() : nullptr;
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(this->*dmaFn)(range.paddr, range.size, event, loc_data, delay);
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loc_data += range.size;
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}
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}
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} // namespace gem5
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