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Re: [Qemu-arm] [Qemu-devel] [PATCH v4 09/14] pci: Add support for Design

From: Philippe Mathieu-Daudé
Subject: Re: [Qemu-arm] [Qemu-devel] [PATCH v4 09/14] pci: Add support for Designware IP block
Date: Wed, 17 Jan 2018 13:45:13 -0300

Hi Andrey,

On Wed, Jan 17, 2018 at 1:12 PM, Andrey Smirnov
<address@hidden> wrote:
> On Wed, Jan 17, 2018 at 7:23 AM, Marcel Apfelbaum
> <address@hidden> wrote:
>> That being said, if Andrey can point me to the PCI spec for the Designware
>> PCI host bridge and what parts they implemented for it I can have a look,
>> sure.
>> (I will not be available for a week or so, but right after)
> Just in case you still want this:
> To the best of my knowledge, Synposys does not provide specification
> for their PCIe IP to general public and I am in no way affiliated with
> them, so I don't have any backchannels to get it any other way.
> The next best thing to an actual spec, that I found to be pretty
> useful, is PCIe chapter of i.MX6Q Reference Manual
> (https://www.nxp.com/docs/en/reference-manual/IMX6DQRM.pdf   page
> 4049), which is what I used to implement the code in question.

Please add a comment about it in your respin, such:

Based on "i.MX6 Applications Processor Reference Manual" (Document
Number: IMX6DQRM Rev. 4)

> Last, and probably the most important, "source of truth" was actual
> Linux PCIe driver for i.MX/Designware which I used as a sort of
> inverse reference implementation.

Same here:

Reversed from Linux v4.9 drivers/pci/host/pcie-designware.c

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