Messages in this thread | | | From | Duc Dang <> | Date | Fri, 26 Jun 2015 10:26:48 -0700 | Subject | Re: [PATCH 1/1] pci: xgene: Enable huge outbound bar support |
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On Fri, Jun 26, 2015 at 7:26 AM, Bjorn Helgaas <bhelgaas@google.com> wrote: > Hi Duc, > > On Thu, Jun 25, 2015 at 8:05 PM, Duc Dang <dhdang@apm.com> wrote: >> X-Gene PCIe controllers support huge outbound BARs (with size upto >> 64GB). This patch configures additional 1 outbound BAR for X-Gene >> PCIe controllers with size larger than 4GB. This is required to >> support devices that request huge outbound memory (nVidia K40 as an >> example) > > The PCI specs don't use the "outbound BAR" terminology. I assume this > is what we normally call "windows" or "apertures" for MMIO access by > the CPU? (The specs rarely use those terms either, but they're > commonly used in Linux, and the PCIe spec does mention them a couple > times.)
Yes, Bjorn. The "outbound BAR" that I mentioned is the MMIO window. I will change these terms in next patch.
> > By "request huge outbound memory," I assume you simply mean the device > has a huge BAR, right? Yes, I meant "the device has a huge BAR". I will change the description for this in next patch as well
> > Bjorn
Regards, Duc Dang.
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