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https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
#include <criterion/criterion.h>
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#include <villas/log.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 <villas/utils.h>
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#include "global.hpp"
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#include <villas/memory.hpp>
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Test(fpga, dma, .description = "DMA")
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{
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auto logger = loggerGetOrCreate("unittest:dma");
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size_t count = 0;
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for(auto& ip : state.cards.front()->ips) {
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// skip non-dma IPs
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if(*ip != villas::fpga::Vlnv("xilinx.com:ip:axi_dma:"))
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continue;
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logger->info("Testing {}", *ip);
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auto dma = reinterpret_cast<villas::fpga::ip::Dma&>(*ip);
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if(not dma.loopbackPossible()) {
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logger->info("Loopback test not possible for {}", *ip);
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continue;
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}
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count++;
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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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// find a block RAM IP to write to
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auto bramIp = state.cards.front()->lookupIp(villas::fpga::Vlnv("xilinx.com:ip:axi_bram_ctrl:"));
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auto bram = reinterpret_cast<villas::fpga::ip::Bram*>(bramIp);
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cr_assert_not_null(bram, "Couldn't find BRAM");
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/* Allocate memory to use with DMA */
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auto src = villas::HostDmaRam::getAllocator().allocate<char>(len);
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auto dst = villas::HostDmaRam::getAllocator().allocate<char>(len);
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/* ... only works with IOMMU enabled currently */
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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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/* ... only works with IOMMU enabled currently */
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// auto src = villas::HostRam::getAllocator().allocate<char>(len);
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// auto dst = villas::HostRam::getAllocator().allocate<char>(len);
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/* Make sure memory is accessible for DMA */
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cr_assert(dma.makeAccesibleFromVA(src.getMemoryBlock()),
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"Source memory not accessible for DMA");
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cr_assert(dma.makeAccesibleFromVA(dst.getMemoryBlock()),
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"Destination memory not accessible for DMA");
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/* Get new random data */
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const size_t lenRandom = read_random(&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(TXT_GREEN("Passed"));
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}
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villas::MemoryManager::get().dump();
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cr_assert(count > 0, "No Dma found");
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}
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