linux-kernel - Re: [PATCH 6/7] MIPS: SGI-IP27: use generic PCI driver

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Date:   Wed, 30 Jan 2019 09:28:55 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Thomas Bogendoerfer <tbogendoerfer@...e.de>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        James Hogan <jhogan@...nel.org>, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-pci@...r.kernel.org,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Paul Burton <paul.burton@...s.com>,
        Ralf Baechle <ralf@...ux-mips.org>
Subject: Re: [PATCH 6/7] MIPS: SGI-IP27: use generic PCI driver

On Wed, Jan 30, 2019 at 06:25:20PM +0100, Thomas Bogendoerfer wrote:
> 
> and it's already there:-) Each struct device has a field numa_node and pci_bus has
> contains a struct device. arm64 is already using it only not so nice part is the
> usage of pcibios_root_bridge_prepare() to set the numa_node for the root bus.

Oh, great.  Maybe we can then just use that field for mips for now
and gradually move all architectures over.

> > Or add a add_dev callback, similar to what I did for a previous series
> > that we didn't end up needing after all:
> > 
> > http://git.infradead.org/users/hch/misc.git/commitdiff/06d9b4fc7deed336edc1292fe2e661729e98ec39
> 
> that's exactly what I'm looking for. Should I add the patch for my patchset or
> are you going to submit it after having a use case ?

Feel free to pick it up.  For the dma addressing limitations we
decided that exposing it through a DT property is the right way, so
that series isn't going anywhere.