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Message-ID: <20200511103654.GD24149@e121166-lin.cambridge.arm.com>
Date: Mon, 11 May 2020 11:36:54 +0100
From: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Cc: Rob Herring <robh+dt@...nel.org>, Tom Joseph <tjoseph@...ence.com>,
Jingoo Han <jingoohan1@...il.com>,
Bjorn Helgaas <bhelgaas@...gle.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>,
Kishon Vijay Abraham I <kishon@...com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
linux-rockchip@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org,
Prabhakar <prabhakar.csengg@...il.com>
Subject: Re: [PATCH v10 0/8] Add endpoint driver for R-Car PCIe controller
On Thu, May 07, 2020 at 01:33:11PM +0100, Lad Prabhakar 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 rockchip/dwc endpoint drivers are build tested only and was tested on cadence
> by Kishon (https://lkml.org/lkml/2020/5/6/1535)
>
> Changes for v10:
> * Rebased patches on top of pci/rcar branch on tree
> https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git
> * Made pci_epc_get_matching_window() as static
> * Included Ack's from Kishon for patches 4/8 and 5/8
> * Included Reviewed-by tag from Shimoda-san for patches 4/8 and 5/8
>
> Changes for v9:
> * 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
> 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 | 563 ++++++++
> drivers/pci/controller/pcie-rcar-host.c | 1130 +++++++++++++++
> drivers/pci/controller/pcie-rcar.c | 1268 +----------------
> 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, 2150 insertions(+), 1312 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
Applied to pci/rcar, thanks !
Lorenzo
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