pcie 学习资料搜集

写的比较清楚的 PCI实践之路

https://blog.youkuaiyun.com/abcamus/article/details/74157026

 

https://blog.youkuaiyun.com/abcamus/article/details/72812507

 

pcie 扫盲系列

http://blog.chinaaet.com/justlxy/p/5100053251

 

 

dma inbound/outbound   理解

http://www.ssdfans.com/blog/2018/11/01/%E4%BB%8Ecpu%E8%A7%92%E5%BA%A6%E7%90%86%E8%A7%A3pcie%E7%BB%AD%E9%9B%86/

 

 

https://blog.youkuaiyun.com/heliangbin87/article/details/73322998

https://baijiahao.baidu.com/s?id=1590483430637574612&wfr=spider&for=pc

 

https://blog.youkuaiyun.com/abcamus/article/details/73518752

https://blog.youkuaiyun.com/Buyi_Shizi/article/details/51068609

 

pcie transfer的理解

inbound   outbound

pcie 到sys mem的转换

sys mem到pcie 的转换

CIE配置空间里，0x10开始后面有6个32位的BAR寄存器，BAR寄存器中存储的数据是表示PCIE设备在PCIE地址空间中的基地址，注意这里不是表示PCIE设备内存在CPU内存中的映射地址