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基于Xilinux FPGA的PCI-E网卡,如何访问寄存器?



有款VERIS72056的多功能卡,目前插在PC上当做光口万兆网卡使用(PCI-E X8),此卡是Xilinux FPGA为控制器的。

目前在linux 驱动调试阶段,通过ioremap获取的卡的寄存器首地址后进行读操作,发现数据不对。

   向请教此卡如何对寄存器进行地址映射以及如何进行读写? 谢谢