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Hi,
I am running rocket chip on ZC706, and trying to write a MMIO device. I found if I set concurrency = 1 in TLRegisterRouter , because I wanted to use RegisterWriteIO, speed of writing to and reading from MMIO were both 0x18. But When I set concurrency = 0, speed of writing to MMIO was 0x1e and speed of reading from MMIO was 0x10.
I know that there will be a queue to keep the request from tile if I set concurrency = 1, but I don't think this queue will influence reading and writing differently.
This discussion was converted from issue #1888 on January 12, 2023 00:50.
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Hi,
I am running rocket chip on ZC706, and trying to write a MMIO device. I found if I set
concurrency = 1inTLRegisterRouter, because I wanted to useRegisterWriteIO, speed of writing to and reading from MMIO were both 0x18. But When I setconcurrency = 0, speed of writing to MMIO was 0x1e and speed of reading from MMIO was 0x10.I know that there will be a queue to keep the request from tile if I set
concurrency = 1, but I don't think this queue will influence reading and writing differently.Can anyone help me? Thanks!
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