Communication protocol through PCI between host and target

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Hi all,

I am a newbie here please bear with me.

In my custom board the communication between host and target
should happen through PCI interface.

The target processor runs u-boot, and host processor is running linux.

The target devices will be accessed from the host by /dev nodes.

To reduce the workload on host all the target calls like
open, read ,write ,ioctl are passed directly to the target.

There will be a common PCI buffer between host
and target and target will take commands from this buffer
and execute. The result of executed API also will be put to a shared buffer
between host and target. [This is what I am planning to implement]

Anybody has come across similar sort of scenario?
Any ideas or any pointers will be highly appreciated.

Regards,
Arun C
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