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From:   "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Date:   Tue, 5 May 2020 10:47:15 +0100
Message-ID: <CA+V-a8t2iVNsWnc4ekwkAKAnLx5Mzc+chWnzsi3kuXRrJv34+A@mail.gmail.com>
Subject: Re: [PATCH v9 0/8] Add endpoint driver for R-Car PCIe controller
To:     Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Kishon Vijay Abraham I <kishon@ti.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 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.

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
> > >