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/*
* Copyright (c) 2021 Advanced Micro Devices, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "dev/dma_virt_device.hh"
namespace gem5
{
void
DmaVirtDevice::dmaReadVirt(Addr host_addr, unsigned size,
DmaCallback *cb, void *data, Tick delay)
{
dmaVirt(&DmaDevice::dmaRead, host_addr, size, cb, data, delay);
}
void
DmaVirtDevice::dmaWriteVirt(Addr host_addr, unsigned size,
DmaCallback *cb, void *data, Tick delay)
{
dmaVirt(&DmaDevice::dmaWrite, host_addr, size, cb, data, delay);
}
void
DmaVirtDevice::dmaVirt(DmaFnPtr dmaFn, Addr addr, unsigned size,
DmaCallback *cb, void *data, Tick delay)
{
if (size == 0) {
if (cb)
schedule(cb->getChunkEvent(), curTick() + delay);
return;
}
// move the buffer data pointer with the chunks
uint8_t *loc_data = (uint8_t*)data;
TranslationGenPtr gen = translate(addr, size);
for (const auto &range: *gen) {
fatal_if(range.fault, "Failed translation: vaddr 0x%x", range.vaddr);
Event *event = cb ? cb->getChunkEvent() : nullptr;
(this->*dmaFn)(range.paddr, range.size, event, loc_data, delay);
loc_data += range.size;
}
}
} // namespace gem5