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From:   "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Date:   Thu, 7 May 2020 08:34:40 +0100
Message-ID: <CA+V-a8vrkgZG5vZG7PwGH1Oq0KmTE1E5=2+3w2t5KX9mvV42fQ@mail.gmail.com>
Subject: Re: [PATCH v9 0/8] Add endpoint driver for R-Car PCIe controller
To:     Kishon Vijay Abraham I <kishon@ti.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc:     Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Rob Herring <robh+dt@kernel.org>,
        Andrew Murray <amurray@thegoodpenguin.co.uk>,
        Tom Joseph <tjoseph@cadence.com>,
        Jingoo Han <jingoohan1@gmail.com>,
        Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
        Marek Vasut <marek.vasut+renesas@gmail.com>,
        Shawn Lin <shawn.lin@rock-chips.com>,
        Heiko Stuebner <heiko@sntech.de>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        linux-pci <linux-pci@vger.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>,
        Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@lists.infradead.org>,
        LAK <linux-arm-kernel@lists.infradead.org>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
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Hi Kishon,

On Thu, May 7, 2020 at 4:13 AM Kishon Vijay Abraham I <kishon@ti.com> wrote:
>
> Hi Prabhakar,
>
> On 5/5/2020 3:17 PM, Lad, Prabhakar wrote:
> > Hi Lorenzo,
> >
> > On Tue, May 5, 2020 at 10:44 AM Lorenzo Pieralisi
> > <lorenzo.pieralisi@arm.com> wrote:
> >>
> >> On Thu, Apr 30, 2020 at 09:43:20AM +0100, Lad, Prabhakar wrote:
> >>> Hi Kishon,
> >>>
> >>> On Thu, Apr 23, 2020 at 7:23 PM Lad Prabhakar
> >>> <prabhakar.mahadev-lad.rj@bp.renesas.com> wrote:
> >>>>
> >>>> Hi All,
> >>>>
> >>>> This patch series adds support for endpoint driver for R-Car PCIe controller on
> >>>> R-Car/RZ-G2x SoC's, this also extends the epf framework to handle multiple windows
> >>>> supported by the controller for mapping PCI address locally.
> >>>>
> >>>> Note:
> >>>> The cadence/rockchip/designware endpoint drivers are build tested only.
> >>>>
> >>>> Changes for v9 (Re-spun this series as there were minimal changes requested):
> >>>> * Rebased patches on top of v5.7.rc1
> >>>> * Replaced mdelay(1) with usleep_range(1000, 1001) in rcar_pcie_ep_assert_intx()
> >>>> * Added a check for max_functions read from DT to restrict with
> >>>>   RCAR_EPC_MAX_FUNCTIONS
> >>>> * Replaced MSICAP0_MMENUM with MSICAP0_MMESE
> >>>> * Retry ioremap for other windows on failure in pci_epc_mem_alloc_addr()
> >>>> * Fixed looping for number windows in pci_epc_mem_exit()
> >>>> * Set maximum to 1 for max-functions in DT binding (I have restored the acks
> >>>>   from  Rob and Shimoda-san)
> >>>> * Sorted the entry in MAINTAINERS
> >>>>
> >>>> Changes for v8:
> >>>> * Dropped adding R8A774C0 (0x002d) pci-id in pci_ids.h
> >>>> * Fixed typo in commit message for patch 2/8
> >>>> * Reworded commit message for patch 5/8 as suggested by Bjorn
> >>>> * Split up patch to add pci_epc_mem_init() interface to add page_size argument
> >>>>   as suggested by Bjorn.
> >>>>
> >>>> Changes for v7:
> >>>> * Fixed review comments pointed by Shimoda-san
> >>>>   1] Made DT bindings dual licensed, added Shimoda-san as maintainer and fixed
> >>>>      the example as its built with #{address,size}-cells = <1>. I have still
> >>>>      restored the Ack from Rob and Shimoda-san with these changes.
> >>>>   2] Split up the patches so that they can be picked up by respective subsystem
> >>>>      patches 1/4-9/11 are now part of this series.
> >>>>   3] Dropped altering a comment in pci-epc.h
> >>>>   4] Used a local variable align_size in pci_epc_mem_alloc_addr() so that size
> >>>>      variable doesn't get overwritten in the loop.
> >>>>   5] Replaced i-=1 with i--
> >>>>   6] Replaced rcar with R-Car in patch subject and description.
> >>>>   7] Set MACCTLR in init() callback
> >>>>
> >>>> Changes for v6:
> >>>> 1] Rebased patches on endpoint branch of https://git.kernel.org/pub/
> >>>>    scm/linux/kernel/git/lpieralisi/pci.git/
> >>>> 2] Fixed review comments from Shimoda-san
> >>>>    a] Made sure defconfig changes were in separate patch
> >>>>    b] Created rcar_pcie_host/rcar_pcie_ep structures
> >>>>    c] Added pci-id for R8A774C0
> >>>>    d] Added entry in MAINTAINERS for dt-binding
> >>>>    e] Dropped unnecessary braces
> >>>> 3] Added support for msi.
> >>>>
> >>>> Changes for v5:
> >>>> 1] Rebased patches on next branch of https://git.kernel.org/pub/scm/
> >>>>    linux/kernel/git/helgaas/pci.git
> >>>> 2] Fixed review comments reported by Kishon while fetching the matching
> >>>>    window in function pci_epc_get_matching_window()
> >>>> 3] Fixed review comments reported by Bjorn
> >>>>    a] Split patch up first patch so that its easier to review and incremental
> >>>>    b] Fixed typos
> >>>> 4] Included Reviewed tag from Rob for the dt-binding patch
> >>>> 5] Fixed issue reported by Nathan for assigning variable to itself
> >>>>
> >>>> Changes for v4:
> >>>> 1] Fixed dtb_check error reported by Rob
> >>>> 2] Fixed review comments reported by Kishon
> >>>>    a] Dropped pci_epc_find_best_fit_window()
> >>>>    b] Fixed initializing mem ptr in __pci_epc_mem_init()
> >>>>    c] Dropped map_size from pci_epc_mem_window structure
> >>>>
> >>>> Changes for v3:
> >>>> 1] Fixed review comments from Bjorn and Kishon.
> >>>> 3] Converted to DT schema
> >>>>
> >>>> Changes for v2:
> >>>> 1] Fixed review comments from Biju for dt-bindings to include an example
> >>>>    for a tested platform.
> >>>> 2] Fixed review comments from Kishon to extend the features of outbound
> >>>>    regions in epf framework.
> >>>> 3] Added support to parse outbound-ranges in OF.
> >>>>
> >>>> Lad Prabhakar (8):
> >>>>   PCI: rcar: Rename pcie-rcar.c to pcie-rcar-host.c
> >>>>   PCI: rcar: Move shareable code to a common file
> >>>>   PCI: rcar: Fix calculating mask for PCIEPAMR register
> >>>>   PCI: endpoint: Pass page size as argument to pci_epc_mem_init()
> >>>>   PCI: endpoint: Add support to handle multiple base for mapping
> >>>>     outbound memory
> >>> Could you please do the needy for the above two patches, so that this
> >>> can be picked up by Lorenzo.
> >>
> >> Yes please. I would kindly ask you to rebase it on top of my
> >> pci/rcar branch - with Kishon's ACK when provided.
> >>
> > Sure will do that as soon as I get Kishon's Ack.
>
> I've given my Acked by on the two endpoint core patches. I've also tested my
> endpoint series [1] after applying this series.
>
Thank you for testing and the Ack's.

Cheers,
--Prabhakar

> Thanks
> Kishon
>
> [1] -> http://lore.kernel.org/r/20200506151429.12255-1-kishon@ti.com
> >
> > Cheers,
> > --Prabhakar
> >
> >> Thanks,
> >> Lorenzo
> >>
> >>> Cheers,
> >>> --Prabhakar
> >>>
> >>>>   dt-bindings: PCI: rcar: Add bindings for R-Car PCIe endpoint
> >>>>     controller
> >>>>   PCI: rcar: Add endpoint mode support
> >>>>   MAINTAINERS: Add file patterns for rcar PCI device tree bindings
> >>>>
> >>>>  .../devicetree/bindings/pci/rcar-pci-ep.yaml  |   77 ++
> >>>>  MAINTAINERS                                   |    1 +
> >>>>  drivers/pci/controller/Kconfig                |   18 +
> >>>>  drivers/pci/controller/Makefile               |    3 +-
> >>>>  .../pci/controller/cadence/pcie-cadence-ep.c  |    2 +-
> >>>>  .../pci/controller/dwc/pcie-designware-ep.c   |   16 +-
> >>>>  drivers/pci/controller/pcie-rcar-ep.c         |  557 ++++++++
> >>>>  drivers/pci/controller/pcie-rcar-host.c       | 1065 +++++++++++++++
> >>>>  drivers/pci/controller/pcie-rcar.c            | 1206 +----------------
> >>>>  drivers/pci/controller/pcie-rcar.h            |  140 ++
> >>>>  drivers/pci/controller/pcie-rockchip-ep.c     |    2 +-
> >>>>  drivers/pci/endpoint/pci-epc-mem.c            |  204 ++-
> >>>>  include/linux/pci-epc.h                       |   38 +-
> >>>>  13 files changed, 2078 insertions(+), 1251 deletions(-)
> >>>>  create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-ep.yaml
> >>>>  create mode 100644 drivers/pci/controller/pcie-rcar-ep.c
> >>>>  create mode 100644 drivers/pci/controller/pcie-rcar-host.c
> >>>>  create mode 100644 drivers/pci/controller/pcie-rcar.h
> >>>>
> >>>> --
> >>>> 2.17.1
> >>>>