linux-kernel - Re: [PATCH v11 00/11] PCI: brcmstb: enable PCIe for STB chips

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Message-ID: <CA+-6iNzoz3pM2pJksXogeuou6wB9W-59rN-amCLERFLuY5zLMg@mail.gmail.com>
Date:   Mon, 7 Sep 2020 13:43:23 -0400
From:   Jim Quinlan <james.quinlan@...adcom.com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:     Christoph Hellwig <hch@....de>,
        Florian Fainelli <f.fainelli@...il.com>,
        "open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS" 
        <linux-pci@...r.kernel.org>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Robin Murphy <robin.murphy@....com>,
        "maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE" 
        <bcm-kernel-feedback-list@...adcom.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Dan Williams <dan.j.williams@...el.com>,
        "open list:STAGING SUBSYSTEM" <devel@...verdev.osuosl.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE" 
        <devicetree@...r.kernel.org>,
        "open list:DRM DRIVERS FOR ALLWINNER A10" 
        <dri-devel@...ts.freedesktop.org>, Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        "open list:IOMMU DRIVERS" <iommu@...ts.linux-foundation.org>,
        Joerg Roedel <jroedel@...e.de>,
        Julien Grall <julien.grall@....com>,
        "open list:ACPI FOR ARM64 (ACPI/arm64)" <linux-acpi@...r.kernel.org>,
        "moderated list:ARM PORT" <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:ALLWINNER A10 CSI DRIVER" <linux-media@...r.kernel.org>,
        "open list:REMOTE PROCESSOR (REMOTEPROC) SUBSYSTEM" 
        <linux-remoteproc@...r.kernel.org>,
        "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" 
        <linux-rpi-kernel@...ts.infradead.org>,
        "open list:SUPERH" <linux-sh@...r.kernel.org>,
        "open list:USB SUBSYSTEM" <linux-usb@...r.kernel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Saravana Kannan <saravanak@...gle.com>,
        Stefano Stabellini <sstabellini@...nel.org>
Subject: Re: [PATCH v11 00/11] PCI: brcmstb: enable PCIe for STB chips

On Mon, Sep 7, 2020 at 5:16 AM Lorenzo Pieralisi
<lorenzo.pieralisi@....com> wrote:
>
> On Thu, Aug 27, 2020 at 09:29:59AM -0400, Jim Quinlan wrote:
> > On Thu, Aug 27, 2020 at 2:35 AM Christoph Hellwig <hch@....de> wrote:
> > >
> > > On Tue, Aug 25, 2020 at 10:40:27AM -0700, Florian Fainelli wrote:
> > > > Hi,
> > > >
> > > > On 8/24/2020 12:30 PM, Jim Quinlan wrote:
> > > >>
> > > >> Patchset Summary:
> > > >>    Enhance a PCIe host controller driver.  Because of its unusual design
> > > >>    we are foced to change dev->dma_pfn_offset into a more general role
> > > >>    allowing multiple offsets.  See the 'v1' notes below for more info.
> > > >
> > > > We are version 11 and counting, and it is not clear to me whether there is
> > > > any chance of getting these patches reviewed and hopefully merged for the
> > > > 5.10 merge window.
> > > >
> > > > There are a lot of different files being touched, so what would be the
> > > > ideal way of routing those changes towards inclusion?
> > >
> > > FYI, I offered to take the dma-mapping bits through the dma-mapping tree.
> > > I have a bit of a backlog, but plan to review and if Jim is ok with that
> > > apply the current version.
> > Sounds good to me.
>
> Hi Jim,
>
> is the dependency now solved ? Should we review/take this series as
> is for v5.10 through the PCI tree ?
Hello Lorenzo,

We are still working out a regression with the DMA offset commit on
the RaspberryPi.  Nicolas has found the root cause and we are now
devising a solution.

Thanks,
Jim Quinlan
Broadcom STB

>
> Thanks,
> Lorenzo