Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 25 Oct 2019 08:53:19 -0700 (PDT) | From | Paul Walmsley <> | Subject | Re: [PATCH v2] RISC-V: Add PCIe I/O BAR memory mapping |
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On Fri, 25 Oct 2019, Yash Shah wrote:
> For legacy I/O BARs (non-MMIO BARs) to work correctly on RISC-V Linux, > we need to establish a reserved memory region for them, so that drivers > that wish to use the legacy I/O BARs can issue reads and writes against > a memory region that is mapped to the host PCIe controller's I/O BAR > mapping. > > Signed-off-by: Yash Shah <yash.shah@sifive.com>
Thanks. And just to confirm: this is a fix, right? Without this patch, legacy PCIe I/O resources won't be accessible on RISC-V?
- Paul
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