linux-kernel - Re: [PATCH 00/24] Add support for PCIe RC and EP mode in TI's AM654 SoC

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Date:   Wed, 6 Feb 2019 18:20:21 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Rob Herring <robh+dt@...nel.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Mark Rutland <mark.rutland@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Murali Karicheri <m-karicheri2@...com>,
        Jesper Nilsson <jesper.nilsson@...s.com>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-arm-kernel@...s.com>
Subject: Re: [PATCH 00/24] Add support for PCIe RC and EP mode in TI's AM654
 SoC

Hi Lorenzo,

On 04/02/19 10:10 PM, Lorenzo Pieralisi wrote:
> On Mon, Jan 14, 2019 at 06:54:00PM +0530, Kishon Vijay Abraham I wrote:
>> Add PCIe RC support for TI's AM654 SoC. The PCIe controller in AM654
>> uses Synopsys core revision 4.90a and uses the same TI wrapper as used
>> in keystone2 with certain modification. Hence AM654 will use the same
>> pci wrapper driver pci-keystone.c
>>
>> This series was initially part of [1]. This series only includes patches
>> that has to be merged via Lorenzo's tree. The PHY patches and dt patches
>> will be sent separately.
>>
>> This series is created over my keystone MSI cleanup series [2] and EPC
>> features series [3].
> 
> Hi Kishon,
> 
> so I would suggest we merge those series first, starting from the MSI
> clean-up.
> 
> I will mark this series as awaiting upstream, it is on my radar but
> we have to get the two others done first.

Sure. I have one outstanding comment to be fixed on my legacy interrupt cleanup
patch in the MSI cleanup series. I'll resend the series without the legacy
interrupt cleanup patch so that we can get most of the patches for 5.1. I'll
come back to it later.

I'm not sure how many tested EPC features cleanup. However I've got ACK from
Shawn Lin for the v2 of EPC features cleanup series and Layerscape EP series
was created on top of EPC features cleanup series.

Thanks
Kishon

> 
> Thanks,
> Lorenzo
> 
>> This series:
>> *) Cleanup pci-keystone driver so that both RC mode and EP mode of
>>    AM654 can be supported
>> *) Modify epc-core to support allocation of aligned buffers required for
>>    AM654
>> *) Fix ATU unroll identification
>> *) Add support for both host mode and device mode in AM654    
>>
>> [1] -> https://lore.kernel.org/patchwork/cover/989487/
>> [2] -> https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1883081.html
>> [3] -> https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1899011.html
>>
>> Kishon Vijay Abraham I (24):
>>   PCI: keystone: Add start_link/stop_link dw_pcie_ops
>>   PCI: keystone: Cleanup error_irq configuration
>>   dt-bindings: PCI: keystone: Add "reg-names" binding information
>>   PCI: keystone: Perform host initialization in a single function
>>   PCI: keystone: Use platform_get_resource_byname to get memory
>>     resources
>>   PCI: keystone: Move initializations to appropriate places
>>   dt-bindings: PCI: Add dt-binding to configure PCIe mode
>>   PCI: keystone: Explicitly set the PCIe mode
>>   dt-bindings: PCI: Document "atu" reg-names
>>   PCI: dwc: Enable iATU unroll for endpoint too
>>   PCI: dwc: Fix ATU identification for designware version >= 4.80
>>   PCI: keystone: Prevent ARM32 specific code to be compiled for ARM64
>>   dt-bindings: PCI: Add PCI RC dt binding documentation for AM654
>>   PCI: keystone: Add support for PCIe RC in AM654x Platforms
>>   PCI: keystone: Invoke phy_reset API before enabling PHY
>>   PCI: endpoint: Add support to allocate aligned buffers to be mapped in
>>     BARs
>>   PCI: dwc: Add const qualifier to struct dw_pcie_ep_ops
>>   PCI: dwc: Fix dw_pcie_ep_find_capability to return correct capability
>>     offset
>>   PCI: dwc: Add callbacks for accessing dbi2 address space
>>   PCI: keystone: Add support for PCIe EP in AM654x Platforms
>>   PCI: designware-ep: Configure RESBAR to advertise the smallest size
>>   PCI: designware-ep: Use aligned ATU window for raising MSI interrupts
>>   misc: pci_endpoint_test: Add support to test PCI EP in AM654x
>>   misc: pci_endpoint_test: Fix test_reg_bar to be updated in
>>     pci_endpoint_test
>>
>>  .../bindings/pci/designware-pcie.txt          |   7 +-
>>  .../devicetree/bindings/pci/pci-keystone.txt  |  14 +-
>>  drivers/misc/pci_endpoint_test.c              |  17 +
>>  drivers/pci/controller/dwc/Kconfig            |  25 +-
>>  drivers/pci/controller/dwc/pci-dra7xx.c       |   2 +-
>>  drivers/pci/controller/dwc/pci-keystone.c     | 505 ++++++++++++++----
>>  drivers/pci/controller/dwc/pcie-artpec6.c     |   2 +-
>>  .../pci/controller/dwc/pcie-designware-ep.c   |  55 +-
>>  .../pci/controller/dwc/pcie-designware-host.c |  19 -
>>  .../pci/controller/dwc/pcie-designware-plat.c |   2 +-
>>  drivers/pci/controller/dwc/pcie-designware.c  |  52 ++
>>  drivers/pci/controller/dwc/pcie-designware.h  |  15 +-
>>  drivers/pci/endpoint/functions/pci-epf-test.c |   5 +-
>>  drivers/pci/endpoint/pci-epf-core.c           |  10 +-
>>  include/linux/pci-epc.h                       |   2 +
>>  include/linux/pci-epf.h                       |   3 +-
>>  16 files changed, 587 insertions(+), 148 deletions(-)
>>
>> -- 
>> 2.17.1
>>