linux-kernel - Re: [PATCH v6 0/7] Add SR-IOV support in PCIe Endpoint Core

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Message-ID: <11f417e8-6bc5-93dd-f915-04b352bc61d1@ti.com>
Date:   Wed, 26 May 2021 18:04:58 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Tom Joseph <tjoseph@...ence.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Marek Vasut <marek.vasut+renesas@...il.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Marek Vasut <marek.vasut+renesas@...il.com>,
        <yoshihiro.shimoda.uh@...esas.com>, <jingoohan1@...il.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Vidya Sagar <vidyas@...dia.com>,
        Jesper Nilsson <jesper.nilsson@...s.com>,
        Minghuan Lian <minghuan.Lian@....com>,
        Mingkai Hu <mingkai.hu@....com>, Roy Zang <roy.zang@....com>
CC:     Jonathan Corbet <corbet@....net>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-pci@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-renesas-soc@...r.kernel.org>,
        <linux-rockchip@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Lokesh Vutla <lokeshvutla@...com>
Subject: Re: [PATCH v6 0/7] Add SR-IOV support in PCIe Endpoint Core

Hi All,

On 17/05/21 1:17 pm, Kishon Vijay Abraham I wrote:
> Patch series
> *) Adds support to add virtual functions to enable endpoint controller
>    which supports SR-IOV capability
> *) Add support in Cadence endpoint driver to configure virtual functions
> *) Enable pci_endpoint_test driver to create pci_device for virtual
>    functions
> 
> v1 of the patch series can be found at [1]
> v2 of the patch series can be found at [2]
> v3 of the patch series can be found at [3]
> v4 of the patch series can be found at [4]
> v5 of the patch series can be found at [5]
> 
> Here both physical functions and virtual functions use the same
> pci_endpoint_test driver and existing pcitest utility can be used
> to test virtual functions as well.

I request to help test this series in your platform either with SR-IOV
capability or without SR-IOV capability to make sure there are no
regressions.

Thanks in advance for the help!

Best Regards
Kishon

> 
> Changes from v5:
> *) Rebased to 5.13-rc1
> 
> Changes from v4:
> *) Added a fix in Cadence driver which was overwriting BAR configuration
>    of physical function.
> *) Didn't include Tom's Acked-by since Cadence driver is modified in
>    this revision.
> 
> Changes from v3:
> *) Fixed Rob's comment and added his Reviewed-by as suggested by him.
> 
> Changes from v2:
> *) Fixed DT binding documentation comment by Rob
> *) Fixed the error check in pci-epc-core.c
> 
> Changes from v1:
> *) Re-based and Re-worked to latest kernel 5.10.0-rc2+ (now has generic
>    binding for EP)
> 
> [1] -> http://lore.kernel.org/r/20191231113534.30405-1-kishon@ti.com
> [2] -> http://lore.kernel.org/r/20201112175358.2653-1-kishon@ti.com
> [3] -> https://lore.kernel.org/r/20210305050410.9201-1-kishon@ti.com
> [4] -> http://lore.kernel.org/r/20210310160943.7606-1-kishon@ti.com
> [5] -> https://lore.kernel.org/r/20210419083401.31628-1-kishon@ti.com
> 
> Kishon Vijay Abraham I (7):
>   dt-bindings: PCI: pci-ep: Add binding to specify virtual function
>   PCI: endpoint: Add support to add virtual function in endpoint core
>   PCI: endpoint: Add support to link a physical function to a virtual
>     function
>   PCI: endpoint: Add virtual function number in pci_epc ops
>   PCI: cadence: Add support to configure virtual functions
>   misc: pci_endpoint_test: Populate sriov_configure ops to configure
>     SR-IOV device
>   Documentation: PCI: endpoint/pci-endpoint-cfs: Guide to use SR-IOV
> 
>  .../PCI/endpoint/pci-endpoint-cfs.rst         |  12 +-
>  .../devicetree/bindings/pci/pci-ep.yaml       |   7 +
>  drivers/misc/pci_endpoint_test.c              |   1 +
>  .../pci/controller/cadence/pcie-cadence-ep.c  | 285 ++++++++++++++----
>  drivers/pci/controller/cadence/pcie-cadence.h |   7 +
>  .../pci/controller/dwc/pcie-designware-ep.c   |  36 +--
>  drivers/pci/controller/pcie-rcar-ep.c         |  19 +-
>  drivers/pci/controller/pcie-rockchip-ep.c     |  18 +-
>  drivers/pci/endpoint/functions/pci-epf-ntb.c  |  79 +++--
>  drivers/pci/endpoint/functions/pci-epf-test.c |  66 ++--
>  drivers/pci/endpoint/pci-ep-cfs.c             |  24 ++
>  drivers/pci/endpoint/pci-epc-core.c           | 130 +++++---
>  drivers/pci/endpoint/pci-epf-core.c           | 144 ++++++++-
>  include/linux/pci-epc.h                       |  57 ++--
>  include/linux/pci-epf.h                       |  16 +-
>  15 files changed, 684 insertions(+), 217 deletions(-)
>