mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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157d5b21d7
This edits the headers in every file so the copyright notice mentions RWTH Aachen University. We also update some copyright years and fix various comments so the header is the same across all of VILLASframework. * Harmonize comment and code-style Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com> * Harmonize comment and code-style Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com> --------- Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com>
96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
/* DMA unit test.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2017 Steffen Vogel <post@steffenvogel.de>
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <criterion/criterion.h>
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#include <villas/log.hpp>
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#include <villas/utils.hpp>
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#include <villas/memory.hpp>
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#include <villas/fpga/card.hpp>
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#include <villas/fpga/ips/dma.hpp>
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#include <villas/fpga/ips/bram.hpp>
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#include "global.hpp"
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using namespace villas;
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// cppcheck-suppress unknownMacro
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Test(fpga, dma, .description = "DMA")
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{
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auto logger = logging.get("unit-test:dma");
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std::list<std::shared_ptr<fpga::ip::Dma>> dmaIps;
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for (auto &ip : state.cards.front()->ips) {
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if (*ip == fpga::Vlnv("xilinx.com:ip:axi_dma:")) {
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auto dma = std::dynamic_pointer_cast<fpga::ip::Dma>(ip);
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dmaIps.push_back(dma);
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}
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}
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size_t count = 0;
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for (auto &dma : dmaIps) {
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logger->info("Testing {}", *dma);
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if (not dma->loopbackPossible()) {
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logger->info("Loopback test not possible for {}", *dma);
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continue;
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}
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dma->connectLoopback();
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// Simple DMA can only transfer up to 4 kb due to PCIe page size burst
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// limitation
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size_t len = 4 * (1 << 10);
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#if 0
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// Allocate memory to use with DMA
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auto src = HostDmaRam::getAllocator().allocate<char>(len);
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auto dst = HostDmaRam::getAllocator().allocate<char>(len);
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#elif 0
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// ... only works with IOMMU enabled currently
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// Find a block RAM IP to write to
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auto bramIp = state.cards.front()->lookupIp(fpga::Vlnv("xilinx.com:ip:axi_bram_ctrl:"));
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auto bram = std::dynamic_pointer_cast<fpga::ip::Bram>(bramIp);
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cr_assert_not_null(bram, "Couldn't find BRAM");
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auto src = bram->getAllocator().allocate<char>(len);
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auto dst = bram->getAllocator().allocate<char>(len);
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#else
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// ... only works with IOMMU enabled currently
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auto &alloc = villas::HostRam::getAllocator();
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const std::shared_ptr<villas::MemoryBlock> srcBlock = alloc.allocateBlock(len);
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const std::shared_ptr<villas::MemoryBlock> dstBlock = alloc.allocateBlock(len);
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villas::MemoryAccessor<char> src(*srcBlock);
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villas::MemoryAccessor<char> dst(*dstBlock);
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#endif
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// Make sure memory is accessible for DMA
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dma->makeAccesibleFromVA(srcBlock);
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dma->makeAccesibleFromVA(dstBlock);
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// Get new random data
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const size_t lenRandom = utils::readRandom(&src, len);
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cr_assert(len == lenRandom, "Failed to get random data");
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// Start transfer
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cr_assert(dma->memcpy(src.getMemoryBlock(), dst.getMemoryBlock(), len),
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"DMA ping pong failed");
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// Compare data
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cr_assert(memcmp(&src, &dst, len) == 0, "Data not equal");
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logger->info(CLR_GRN("Passed"));
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count++;
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}
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cr_assert(count > 0, "No DMA found");
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MemoryManager::get().getGraph().dump();
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fpga::ip::Node::getGraph().dump();
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}
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