[PATCH v5 00/14] Fix and improve the Rockchip endpoint driver

[Manivannan Sadhasivam]

On Wed, Nov 13, 2024 at 11:29:48PM +0900, Damien Le Moal wrote:
> On 10/29/24 19:35, Damien Le Moal wrote:
> > On 10/17/24 10:58, Damien Le Moal wrote:
> >> This patch series fix the PCI address mapping handling of the Rockchip
> >> PCI endpoint driver, refactor some of its code, improves link training
> >> and adds handling of the PERST# signal.
> >>
> >> This series is organized as follows:
> >>  - Patch 1 fixes the rockchip ATU programming
> >>  - Patch 2, 3 and 4 introduce small code improvments
> >>  - Patch 5 implements the .align_addr() operation to make the RK3399
> >>    endpoint controller driver fully functional with the new
> >>    pci_epc_mem_map() function
> >>  - Patch 6 uses the new align_addr operation function to fix the ATU
> >>    programming for MSI IRQ data mapping
> >>  - Patch 7, 8, 9 and 10 refactor the driver code to make it more
> >>    readable
> >>  - Patch 11 introduces the .stop() endpoint controller operation to
> >>    correctly disable the endpopint controller after use
> >>  - Patch 12 improves link training
> >>  - Patch 13 implements handling of the #PERST signal
> >>  - Patch 14 adds a DT overlay file to enable EP mode and define the
> >>    PERST# GPIO (reset-gpios) property.
> >>
> >> These patches were tested using a Pine Rockpro64 board used as an
> >> endpoint with the test endpoint function driver and a prototype nvme
> >> endpoint function driver.
> > 
> > Ping ? If there are no issues, can we get this queued up ?
> 
> Mani,
> 
> Ping AGAIN !!!!
> 
> I do not see anything queued in pci/next. What is the blocker ?
> These patches have been sitting on the list for nearly a month now, PLEASE DO
> SOMETHING. Comment or apply, but please reply something.
> 

Damien,

Sorry for the late reply. Things got a bit hectic due to company onsite meeting.
I'm going through my queue now.

But FYI, I don't merge patches outside drivers/pci/endpoint/

- Mani

> > 
> >>
> >> Changes from v4:
> >>  - Added patch 6
> >>  - Added comments to patch 12 and 13 to clarify link training handling
> >>    and PERST# GPIO use.
> >>  - Added patch 14
> >>
> >> Changes from v3:
> >>  - Addressed Mani's comments (see mailing list for details).
> >>  - Removed old patch 11 (dt-binding changes) and instead use in patch 12
> >>    the already defined reset_gpios property.
> >>  - Added patch 6
> >>  - Added review tags
> >>
> >> Changes from v2:
> >>  - Split the patch series
> >>  - Corrected patch 11 to add the missing "maxItem"
> >>
> >> Changes from v1:
> >>  - Changed pci_epc_check_func() to pci_epc_function_is_valid() in patch
> >>    1.
> >>  - Removed patch "PCI: endpoint: Improve pci_epc_mem_alloc_addr()"
> >>    (former patch 2 of v1)
> >>  - Various typos cleanups all over. Also fixed some blank space
> >>    indentation.
> >>  - Added review tags
> >>
> >> Damien Le Moal (14):
> >>   PCI: rockchip-ep: Fix address translation unit programming
> >>   PCI: rockchip-ep: Use a macro to define EP controller .align feature
> >>   PCI: rockchip-ep: Improve rockchip_pcie_ep_unmap_addr()
> >>   PCI: rockchip-ep: Improve rockchip_pcie_ep_map_addr()
> >>   PCI: rockchip-ep: Implement the pci_epc_ops::align_addr() operation
> >>   PCI: rockchip-ep: Fix MSI IRQ data mapping
> >>   PCI: rockchip-ep: Rename rockchip_pcie_parse_ep_dt()
> >>   PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() memory allocations
> >>   PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() MSI-X hiding
> >>   PCI: rockchip-ep: Refactor endpoint link training enable
> >>   PCI: rockship-ep: Implement the pci_epc_ops::stop_link() operation
> >>   PCI: rockchip-ep: Improve link training
> >>   PCI: rockchip-ep: Handle PERST# signal in endpoint mode
> >>   arm64: dts: rockchip: Add rockpro64 overlay for PCIe endpoint mode
> >>
> >>  arch/arm64/boot/dts/rockchip/Makefile         |   1 +
> >>  .../rockchip/rk3399-rockpro64-pcie-ep.dtso    |  20 +
> >>  drivers/pci/controller/pcie-rockchip-ep.c     | 432 ++++++++++++++----
> >>  drivers/pci/controller/pcie-rockchip-host.c   |   4 +-
> >>  drivers/pci/controller/pcie-rockchip.c        |  21 +-
> >>  drivers/pci/controller/pcie-rockchip.h        |  24 +-
> >>  6 files changed, 406 insertions(+), 96 deletions(-)
> >>  create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-rockpro64-pcie-ep.dtso
> >>
> > 
> > 
> 
> 
> -- 
> Damien Le Moal
> Western Digital Research

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