[v4,0/7] Amazon's Annapurna Labs DT-based PCIe host controller driver

This series adds support for Amazon's Annapurna Labs DT-based PCIe host
controller driver.
Additionally, it adds 3 quirks (ACS, VPD and MSI-X) and 2 generic DWC patches.

Changes since v3:
- Removed PATCH 8/8 since the usage of the PCI flags will be discussed
  in the upcoming LPC
- Align commit subject with the folder convention
- Added explanation regarding ECAM "overload" mechanism
- Switched to read/write{_relaxed} APIs
- Modified a dev_err to dev_dbg
- Removed unnecessary variable
- Removed driver details from dt-binding description
- Changed to SoC specific compatibles
- Fixed typo in a commit message
- Added comment regarding MSI in the MSI-X quirk

Changes since v2:
- Added al_pcie_controller_readl/writel() wrappers
- Reorganized local vars in several functions according to reverse
  tree structure
- Removed unnecessary check of ret value
- Changed return type of al_pcie_config_prepare() from int to void
- Removed check if link is up from probe() [done internally in
  dw_pcie_rd/wr_conf()]

Changes since v1:
- Added comment regarding 0x0031 being used as a dev_id for non root-port devices as well
- Fixed different message/comment/print wordings
- Added panic stacktrace to commit message of MSI-x quirk patch
- Changed to pci_warn() instead of dev_warn()
- Added unit_address after node_name in dt-binding
- Updated Kconfig help description
- Used GENMASK and FIELD_PREP/GET where appropriate
- Removed leftover field from struct al_pcie and moved all ptrs to
  the beginning
- Re-wrapped function definitions and invocations to use fewer lines
- Change %p to %px in dbg prints in rd/wr_conf() functions
- Removed validation that the port is configured to RC mode (as this is
  added generically in PATCH 7/8)
- Removed unnecessary variable initializations
- Swtiched to %pR for printing resources


Ali Saidi (1):
  PCI: Add ACS quirk for Amazon Annapurna Labs root ports

Jonathan Chocron (6):
  PCI: Add Amazon's Annapurna Labs vendor ID
  PCI/VPD: Add VPD release quirk for Amazon's Annapurna Labs Root Port
  PCI: Add quirk to disable MSI-X support for Amazon's Annapurna Labs
    Root Port
  dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge binding
  PCI: dwc: al: Add support for DW based driver type
  PCI: dwc: Add validation that PCIe core is set to correct mode

 .../devicetree/bindings/pci/pcie-al.txt       |  46 +++
 MAINTAINERS                                   |   3 +-
 drivers/pci/controller/dwc/Kconfig            |  12 +
 drivers/pci/controller/dwc/pcie-al.c          | 365 ++++++++++++++++++
 .../pci/controller/dwc/pcie-designware-ep.c   |   8 +
 .../pci/controller/dwc/pcie-designware-host.c |   8 +
 drivers/pci/quirks.c                          |  37 ++
 drivers/pci/vpd.c                             |  16 +
 include/linux/pci_ids.h                       |   2 +
 9 files changed, 496 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/pci/pcie-al.txt

On Wed, Aug 21, 2019 at 06:35:40PM +0300, Jonathan Chocron wrote:
> This series adds support for Amazon's Annapurna Labs DT-based PCIe host
> controller driver.
> Additionally, it adds 3 quirks (ACS, VPD and MSI-X) and 2 generic DWC patches.
> 
> Changes since v3:
> - Removed PATCH 8/8 since the usage of the PCI flags will be discussed
>   in the upcoming LPC
> - Align commit subject with the folder convention
> - Added explanation regarding ECAM "overload" mechanism
> - Switched to read/write{_relaxed} APIs
> - Modified a dev_err to dev_dbg
> - Removed unnecessary variable
> - Removed driver details from dt-binding description
> - Changed to SoC specific compatibles
> - Fixed typo in a commit message
> - Added comment regarding MSI in the MSI-X quirk
> 
> Changes since v2:
> - Added al_pcie_controller_readl/writel() wrappers
> - Reorganized local vars in several functions according to reverse
>   tree structure
> - Removed unnecessary check of ret value
> - Changed return type of al_pcie_config_prepare() from int to void
> - Removed check if link is up from probe() [done internally in
>   dw_pcie_rd/wr_conf()]
> 
> Changes since v1:
> - Added comment regarding 0x0031 being used as a dev_id for non root-port devices as well
> - Fixed different message/comment/print wordings
> - Added panic stacktrace to commit message of MSI-x quirk patch
> - Changed to pci_warn() instead of dev_warn()
> - Added unit_address after node_name in dt-binding
> - Updated Kconfig help description
> - Used GENMASK and FIELD_PREP/GET where appropriate
> - Removed leftover field from struct al_pcie and moved all ptrs to
>   the beginning
> - Re-wrapped function definitions and invocations to use fewer lines
> - Change %p to %px in dbg prints in rd/wr_conf() functions
> - Removed validation that the port is configured to RC mode (as this is
>   added generically in PATCH 7/8)
> - Removed unnecessary variable initializations
> - Swtiched to %pR for printing resources
> 
> 
> Ali Saidi (1):
>   PCI: Add ACS quirk for Amazon Annapurna Labs root ports
> 
> Jonathan Chocron (6):
>   PCI: Add Amazon's Annapurna Labs vendor ID
>   PCI/VPD: Add VPD release quirk for Amazon's Annapurna Labs Root Port
>   PCI: Add quirk to disable MSI-X support for Amazon's Annapurna Labs
>     Root Port
>   dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge binding
>   PCI: dwc: al: Add support for DW based driver type
>   PCI: dwc: Add validation that PCIe core is set to correct mode
> 
>  .../devicetree/bindings/pci/pcie-al.txt       |  46 +++
>  MAINTAINERS                                   |   3 +-
>  drivers/pci/controller/dwc/Kconfig            |  12 +
>  drivers/pci/controller/dwc/pcie-al.c          | 365 ++++++++++++++++++
>  .../pci/controller/dwc/pcie-designware-ep.c   |   8 +
>  .../pci/controller/dwc/pcie-designware-host.c |   8 +
>  drivers/pci/quirks.c                          |  37 ++
>  drivers/pci/vpd.c                             |  16 +
>  include/linux/pci_ids.h                       |   2 +
>  9 files changed, 496 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/pci/pcie-al.txt

Hi Jonathan,

are you going to send a v5 for this series ? If we should consider
it for v5.4 I expect it to be on the list this week as soon as possible.

Thanks,
Lorenzo

On Mon, 2019-09-02 at 10:58 +0100, Lorenzo Pieralisi wrote:
> On Wed, Aug 21, 2019 at 06:35:40PM +0300, Jonathan Chocron wrote:
> > This series adds support for Amazon's Annapurna Labs DT-based PCIe
> > host
> > controller driver.
> > Additionally, it adds 3 quirks (ACS, VPD and MSI-X) and 2 generic
> > DWC patches.
> > 
> > Changes since v3:
> > - Removed PATCH 8/8 since the usage of the PCI flags will be
> > discussed
> >   in the upcoming LPC
> > - Align commit subject with the folder convention
> > - Added explanation regarding ECAM "overload" mechanism
> > - Switched to read/write{_relaxed} APIs
> > - Modified a dev_err to dev_dbg
> > - Removed unnecessary variable
> > - Removed driver details from dt-binding description
> > - Changed to SoC specific compatibles
> > - Fixed typo in a commit message
> > - Added comment regarding MSI in the MSI-X quirk
> > 
> > Changes since v2:
> > - Added al_pcie_controller_readl/writel() wrappers
> > - Reorganized local vars in several functions according to reverse
> >   tree structure
> > - Removed unnecessary check of ret value
> > - Changed return type of al_pcie_config_prepare() from int to void
> > - Removed check if link is up from probe() [done internally in
> >   dw_pcie_rd/wr_conf()]
> > 
> > Changes since v1:
> > - Added comment regarding 0x0031 being used as a dev_id for non
> > root-port devices as well
> > - Fixed different message/comment/print wordings
> > - Added panic stacktrace to commit message of MSI-x quirk patch
> > - Changed to pci_warn() instead of dev_warn()
> > - Added unit_address after node_name in dt-binding
> > - Updated Kconfig help description
> > - Used GENMASK and FIELD_PREP/GET where appropriate
> > - Removed leftover field from struct al_pcie and moved all ptrs to
> >   the beginning
> > - Re-wrapped function definitions and invocations to use fewer
> > lines
> > - Change %p to %px in dbg prints in rd/wr_conf() functions
> > - Removed validation that the port is configured to RC mode (as
> > this is
> >   added generically in PATCH 7/8)
> > - Removed unnecessary variable initializations
> > - Swtiched to %pR for printing resources
> > 
> > 
> > Ali Saidi (1):
> >   PCI: Add ACS quirk for Amazon Annapurna Labs root ports
> > 
> > Jonathan Chocron (6):
> >   PCI: Add Amazon's Annapurna Labs vendor ID
> >   PCI/VPD: Add VPD release quirk for Amazon's Annapurna Labs Root
> > Port
> >   PCI: Add quirk to disable MSI-X support for Amazon's Annapurna
> > Labs
> >     Root Port
> >   dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge
> > binding
> >   PCI: dwc: al: Add support for DW based driver type
> >   PCI: dwc: Add validation that PCIe core is set to correct mode
> > 
> >  .../devicetree/bindings/pci/pcie-al.txt       |  46 +++
> >  MAINTAINERS                                   |   3 +-
> >  drivers/pci/controller/dwc/Kconfig            |  12 +
> >  drivers/pci/controller/dwc/pcie-al.c          | 365
> > ++++++++++++++++++
> >  .../pci/controller/dwc/pcie-designware-ep.c   |   8 +
> >  .../pci/controller/dwc/pcie-designware-host.c |   8 +
> >  drivers/pci/quirks.c                          |  37 ++
> >  drivers/pci/vpd.c                             |  16 +
> >  include/linux/pci_ids.h                       |   2 +
> >  9 files changed, 496 insertions(+), 1 deletion(-)
> >  create mode 100644 Documentation/devicetree/bindings/pci/pcie-
> > al.txt
> 
> Hi Jonathan,
> 
> are you going to send a v5 for this series ? If we should consider
> it for v5.4 I expect it to be on the list this week as soon as
> possible.
> 
Yes, I'll send it by tomorrow.

> Thanks,
> Lorenzo