Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support.
To support them, modify PCIe DesignWare common codes.
Changes from v3:
- Rebased on next-20220721.
-- And reverted the following patch.
ef685262346b PCI: designware-ep: Allow pcie_ep_set_bar change inbound map address
-- And based on the following patches:
[PATCH RESEND v4 00/15] PCI: dwc: Add hw version and dma-ranges support
https://lore.kernel.org/linux-pci/20220624143947.8991-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/
[PATCH v3 00/17] PCI: dwc: Add generic resources and Baikal-T1 support
https://lore.kernel.org/linux-pci/20220610085706.15741-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/
[PATCH v3 00/24] dmaengine: dw-edma: Add RP/EP local DMA controllers support
https://lore.kernel.org/all/20220610091459.17612-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/
[PATCH 2/3] arm64: dts: renesas: r8a779f0: Add SDHI0 support
https://lore.kernel.org/all/20220711134656.277730-3-wsa+renesas@xxxxxxxxxxxxxxxxxxxx/
[PATCH 3/3] arm64: dts: renesas: spider-cpu: enable eMMC0
https://lore.kernel.org/all/20220711134656.277730-4-wsa+renesas@xxxxxxxxxxxxxxxxxxxx/
- Patches' order is changed.
- Add Reviewed-by in patch [01/12] and [01/12].
- Modify pcie-designware.c to detect the eDMA in a new patch [07/12].
https://lore.kernel.org/all/20220701085420.870306-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/
Changes from v2:
- Remove some unneeded functions in patch [09/13].
- Fix error messages in patch [09/13].
- Rebase implementation of patch [10/13] on patch [09/13].
https://lore.kernel.org/all/20220627122417.809615-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/
Changes from v1:
- Fix a lot of warning/errors by 'make DT_CHECKER_FLAGS=-m dt_binding_check'.
- Add PCI_EXP_LNKCAP_MLW macros into pci_regs.h
- Remove "extern" in pcie-rcar-gen4.h.
- Add ep_pre_init() into dw_pcie_ep_ops for this controller.
- Add a new flag "reset_all_bars" into dw_pcie_ep. If this way is acceptable,
I'll make patches for other endpoint controllers to simplify.
- Move timing of getting num-lanes property for {ep_pre,host}_init().
- Remove some platform_get_resource().
- Remove "struct rcar_gen4_pcie_ep".
- Allow a kernel module for both host and ep of this controller.
- Minor fixes for checkpatch.pl.
https://lore.kernel.org/all/20220613115712.2831386-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/
Yoshihiro Shimoda (12):
dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host
dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint
PCI: Add PCI_EXP_LNKCAP_MLW macros
PCI: controller: dwc: Expose dw_pcie_ep_exit() to module
PCI: dwc: Add ep_pre_init() callback to dw_pcie_ep_ops
PCI: dwc: Add reset_all_bars flag
PCI: dwc: Avoid reading a register to detect whether eDMA exists
PCI: renesas: Add R-Car Gen4 PCIe Host support
PCI: renesas: Add R-Car Gen4 PCIe Endpoint support
MAINTAINERS: Update PCI DRIVER FOR RENESAS R-CAR for R-Car Gen4
arm64: dts: renesas: r8a779f0: Add PCIe Host and Endpoint nodes
arm64: dts: renesas: r8a779f0: spider: Enable PCIe Host ch0
.../bindings/pci/rcar-gen4-pci-ep.yaml | 99 +++++++++
.../bindings/pci/rcar-gen4-pci-host.yaml | 97 +++++++++
MAINTAINERS | 1 +
.../boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 39 ++++
arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 122 +++++++++++
drivers/pci/controller/dwc/Kconfig | 18 ++
drivers/pci/controller/dwc/Makefile | 4 +
.../pci/controller/dwc/pcie-designware-ep.c | 14 ++
drivers/pci/controller/dwc/pcie-designware.c | 4 +-
drivers/pci/controller/dwc/pcie-designware.h | 2 +
.../pci/controller/dwc/pcie-rcar-gen4-ep.c | 182 ++++++++++++++++
.../pci/controller/dwc/pcie-rcar-gen4-host.c | 195 ++++++++++++++++++
drivers/pci/controller/dwc/pcie-rcar-gen4.c | 181 ++++++++++++++++
drivers/pci/controller/dwc/pcie-rcar-gen4.h | 63 ++++++
include/uapi/linux/pci_regs.h | 7 +
15 files changed, 1026 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml
create mode 100644 Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml
create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c
create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-host.c
create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4.c
create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4.h
--
2.25.1
