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I am writing a driver for a device which takes two things.
Two Circular ring buffers. One for submitting the commands and other for completing them. The driver writes the commands with a tag to the submission ring buffer and then the hardware writes the completions to completion ring buffer.
Each command can have a SGL list.
I am pretty sure that for the ring buffers itself, I should be able to allocate a Common buffer and assign it to the device.
For 2 (region where I create the SGL descriptors) , I believe that common buffer should do the trick as well but would like to be corrected if I am missing something.
Assuming My device can transfer data up to 256 MB.
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