Forum Discussion
NZhan1
Occasional Contributor
Occasional ContributorArria10 DMA失败
使用10AX027和CPU调试PCIe时发现以下问题： 调试过程中软件驱动负责分配一块物理内存，然后把物理内存地址写入FPGA，FPGA从这个物理内存地址做DMA，读取内容。 在Xeon系列的硬件平台上的异常现象是： 当驱动分配的物理内存在4G以上时，FPGA做DMA是可以的，分配到4G以下时，FPGA发送tlp的读请求后，始终得不到响应，DMA失败。 做了以下尝试： 将FPGA及...
SengKok_L_Intel
Regular Contributor
Regular ContributorPlease do let me know if you have an update or more help is needed here. Thanks.
NZhan1Occasional Contributor
Occasional ContributorHi Sengkok,
I have not got test result from customer, but currently there is no more requests. Thanks!
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