ubuntu20 qt6.4.3 ustc镜像安装 xdma

文件下载地质
命令

 ./qt-unified-linux-x64-4.5.2-online.run --mirror https://mirrors.ustc.edu.cn/qtproject

没有镜像就下砸错误hash verification while downloading,this is temporary error,please retry

部分安装器不支持 --mirror

cd ~/workspace/dma_ip_drivers/XDMA/linux-kernel/tests
chmod +x load_driver.sh
sudo ./load_driver.sh
chmod +x run_test.sh
chmod +x dma_memory_mapped_test.sh
sudo ./run_test.sh

kobosp@i76:~/ZDYZPCIe/dma_ip_drivers-2020.2/XDMA/linux-kernel/tests$ grep -i 'data rate' hw_log_h2c.txtdata rate * bytes length = 64, rate = 0.027303 data rate * bytes length = 128, rate = 0.054371 data rate * bytes length = 256, rate = 0.108158 data rate * bytes length = 512, rate = 0.218187 data rate * bytes length = 1024, rate = 0.425214 data rate * bytes length = 2048, rate = 0.788233 data rate * bytes length = 4096, rate = 0.895843 data rate * bytes length = 8192, rate = 0.884780 data rate * bytes length = 16384, rate = 0.879069 data rate * bytes length = 32768, rate = 0.886491 data rate * bytes length = 65536, rate = 0.887784 data rate * bytes length = 131072, rate = 0.901306 data rate * bytes length = 262144, rate = 0.888169 data rate * bytes length = 524288, rate = 0.899780 data rate * bytes length = 1048576, rate = 0.902360 data rate * bytes length = 2097152, rate = 0.901646 data rate * bytes length = 4194304, rate = 0.884004 data rate * bytes length = 64, rate = 0.026916 data rate * bytes length = 128, rate = 0.054047 data rate * bytes length = 256, rate = 0.108097 data rate * bytes length = 512, rate = 0.215282 data rate * bytes length = 1024, rate = 0.428506 data rate * bytes length = 2048, rate = 0.786080 data rate * bytes length = 4096, rate = 0.887400 data rate * bytes length = 8192, rate = 0.880339 data rate * bytes length = 16384, rate = 0.880579 data rate * bytes length = 32768, rate = 0.891512 data rate * bytes length = 65536, rate = 0.891024 data rate * bytes length = 131072, rate = 0.889635 data rate * bytes length = 262144, rate = 0.901533 data rate * bytes length = 524288, rate = 0.894085 data rate * bytes length = 1048576, rate = 0.897564 data rate * bytes length = 2097152, rate = 0.893859 data rate * bytes length = 4194304, rate = 0.902320 

kobosp@i76:~/ZDYZPCIe/dma_ip_drivers-2020.2/XDMA/linux-kernel/tests$ grep -i 'data rate' hw_log_c2h.txtdata rate * bytes length = 64, rate = 0.026920 data rate * bytes length = 128, rate = 0.054528 data rate * bytes length = 256, rate = 0.108012 data rate * bytes length = 512, rate = 0.211802 data rate * bytes length = 1024, rate = 0.372087 data rate * bytes length = 2048, rate = 0.695932 data rate * bytes length = 4096, rate = 0.654649 data rate * bytes length = 8192, rate = 0.655725 data rate * bytes length = 16384, rate = 0.655914 data rate * bytes length = 32768, rate = 0.652136 data rate * bytes length = 65536, rate = 0.656272 data rate * bytes length = 131072, rate = 0.650770 data rate * bytes length = 262144, rate = 0.650932 data rate * bytes length = 524288, rate = 0.653743 data rate * bytes length = 1048576, rate = 0.651811 data rate * bytes length = 2097152, rate = 0.648225 data rate * bytes length = 4194304, rate = 0.650039 data rate * bytes length = 64, rate = 0.027291 data rate * bytes length = 128, rate = 0.054480 data rate * bytes length = 256, rate = 0.108384 data rate * bytes length = 512, rate = 0.209561 data rate * bytes length = 1024, rate = 0.379272 data rate * bytes length = 2048, rate = 0.691824 data rate * bytes length = 4096, rate = 0.652392 data rate * bytes length = 8192, rate = 0.653060 data rate * bytes length = 16384, rate = 0.653323 data rate * bytes length = 32768, rate = 0.651619 data rate * bytes length = 65536, rate = 0.652823 data rate * bytes length = 131072, rate = 0.651224 data rate * bytes length = 262144, rate = 0.656310 data rate * bytes length = 524288, rate = 0.651557 data rate * bytes length = 1048576, rate = 0.652695 data rate * bytes length = 2097152, rate = 0.648976 data rate * bytes length = 4194304, rate = 0.655456 

dma_ip_drivers-2020.2版本可以用于k7plus
可以看到，这些 XDMA 相关设备都是只有 root 读写权限的。所以我们需要设置相应的权限以使当前用
户也可以读写 XDMA。在终端中输入如下命令并执行：

sudo chown $USER:$USER /dev/xdma0*
ls -l /dev/xdma*

pcie2x8速度理论4GB

同时读写

BUS Bandwidth
PCI 1056 MBps
AGP 8x 2.1 GBps
PCIe 1.0 / x4 1 GBps
PCIe 1.0 / x8 2 GBps
PCIe 1.0 / x16 4 GBps
PCIe 2.0 / x4 2 GBps
PCIe 2.0 / x8 4 GBps
PCIe 2.0 / x16 8 GBps
PCIe 3.0 / x1 1.97 GBps
PCIe 3.0 / x4 3.94 GBps
PCIe 3.0 / x8 7.88 GBps
PCIe 3.0 / x16 15.75 GBps
PCIe 4.0 / x1 3.94 GBps
PCIe 4.0 / x4 7.88 GBps
PCIe 4.0 / x8 15.75 GBps
PCIe 4.0 / x16 31.5 GBps
PCIe 5.0 / x16
Firewire 400/800

63 GBps
400/800 Mbps

USB 1.0 12 Mbps
USB 2.0 480 Mbps
USB 3.0 4.8 Gbps
USB 3.1 10 Gbps​
Gigabit Ethernet 1 Gbps
IDE (ATA 100) 800 MBps
IDE (ATA 133) 1064 MBps
SATA 1.5 Gbps
SATA II 3 Gbps
SATA III 6 Gbps