linux-kernel - Re: [PATCH v6 0/19] Refactoring Microchip PCIe driver and add StarFive PCIe

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Message-ID: <88ba051e-040c-4ff0-1cb0-2b6f01cb950c@starfivetech.com>
Date:   Fri, 15 Sep 2023 18:33:18 +0800
From:   Minda Chen <minda.chen@...rfivetech.com>
To:     Daire McNamara <daire.mcnamara@...rochip.com>,
        Conor Dooley <conor@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>
CC:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-pci@...r.kernel.org>,
        Pali Rohár <pali@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mason Huo <mason.huo@...rfivetech.com>,
        Leyfoon Tan <leyfoon.tan@...rfivetech.com>,
        Kevin Xie <kevin.xie@...rfivetech.com>
Subject: Re: [PATCH v6 0/19] Refactoring Microchip PCIe driver and add
 StarFive PCIe



On 2023/9/15 18:22, Minda Chen wrote:
> This patchset final purpose is add PCIe driver for StarFive JH7110 SoC.
> JH7110 using PLDA XpressRICH PCIe IP. Microchip PolarFire Using the
> same IP and have commit their codes, which are mixed with PLDA
> controller codes and Microchip platform codes.
> 
> For re-use the PLDA controller codes, I request refactoring microchip
> codes, move PLDA common codes to PLDA files.
> Desigware and Cadence is good example for refactoring codes.
> 
> So first step is extract the PLDA common codes from microchip, and
> refactoring the microchip codes.(patch1 - 16)
> Then, add Starfive codes. (patch17 - 19)
> 
> This patchset is base on v6.6-rc1
> 
> patch1 is move PLDA XpressRICH PCIe host common properties dt-binding
>        docs from microchip,pcie-host.yaml
> patch2 is move PolarFire codes to PLDA directory.
> patch3 is move PLDA IP register macros to plda-pcie.h
> patch4 is rename data structure in microchip codes.
> patch5 is rename two setup functions in microchip codes, prepare to move
> to common file.
> patch6 is change the arguments of plda_pcie_setup_iomems()
> patch7 is move the two setup functions to common file pcie-plda-host.c
> patch8 is Add PLDA event interrupt codes and IRQ domain ops.
> patch9 is rename the IRQ related functions, prepare to move to
> pcie-plda-host.
> patch10 - 14 is modify the event codes, preparing for support starfive
> and microchip two platforms.
> patch15 is move IRQ related functions to pcie-plda-host.c
> patch16 is set plda_event_handler to static.
> patch17 is add StarFive JH7110 PCIe dt-binding doc.
> patch18 is add StarFive JH7110 Soc PCIe codes.
> patch19 is Starfive dts config
> 
> previous version:
> v1:https://patchwork.kernel.org/project/linux-pci/cover/20230719102057.22329-1-minda.chen@starfivetech.com/
> v2:https://patchwork.kernel.org/project/linux-pci/cover/20230727103949.26149-1-minda.chen@starfivetech.com/
> v3:https://patchwork.kernel.org/project/linux-pci/cover/20230814082016.104181-1-minda.chen@starfivetech.com/
> v4:https://patchwork.kernel.org/project/linux-pci/cover/20230825090129.65721-1-minda.chen@starfivetech.com/
> v5:https://patchwork.kernel.org/project/linux-pci/cover/20230907091058.125630-1-minda.chen@starfivetech.com/
> 
> change:
>   v6:
>     v5 patch 4 split to patch 4 -6. New patches just contain one
> function modification. It is more reguluar.
>     patch 7: Just move the two setup functions only
>     patch 8 : draw a graph of PLDA local register, make it easier to
> review the codes.
>     v5 patch 7 split to patch 9- 14. Each patch just contain one
> function modification. It is more regular.
>     patch 9: rename IRQ related functions.
>     patch 10 - 14 : modify the events codes, total five patch.
>     patch 15: move IRQ related functions to pcie-plda-host.c
>     patch 16: Add new patch 16.
>     patch 18- 19 using "linux,pci-domain" dts setting.
> 
Hi Bjorn
I have noticed that the previous patches of refactoring codes is not so regular( the patched of modify Microchip' codes), and you
don't give any comment to the patches. 
Now this verison is more regular and easier to review. Could you please review the driver codes?

Hi Conor and Daire
Thanks for reviewing. Now I split more patches and make it easier to review.