Messages in this thread | | | From | Yash Shah <> | Subject | RE: [PATCH v2] RISC-V: Add PCIe I/O BAR memory mapping | Date | Tue, 29 Oct 2019 04:19:56 +0000 |
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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?
Yes, this is a fix.
- Yash
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