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pcie outbound能映射到C6678的寄存器地址吗?



如题,用某powerpc板作为RC,C6678作为EP,目前已经能用RC枚举到6678,且能通过PCIE映射到C6678的DDR3、L2等地址,并能正常读写。

现在我想用RC映射到6678的寄存器(比如0x02600000),但是发现往里面写值失败,请教各位专家如何解决?