Hello all, This series adds PCIe endpoint mode support for the rockchip rk3588 SoC. This series is based on: pci/next (git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git) This series has the following dependencies: 1) https://lore.kernel.org/linux-pci/20240418-pci-epf-rework-v3-0-222a5d1ed2e5@xxxxxxxxxx/ The series in 1) has not been merged to pci/next yet. 2) https://lore.kernel.org/linux-phy/20240412125818.17052-1-cassel@xxxxxxxxxx/ The series in 2) has already been merged to phy/next. Even though this series (the series in $subject) has a runtime dependency on the changes that are currently queued in the PHY tree, there is no need to coordinate between the PCI tree and the PHY tree (i.e. this series can be merged via the PCI tree even for the coming merge window (v6.10-rc1)). This is because there is no compile time dependency between the changes in the PHY tree and this series. Likewise, the device tree overlays in this series passes "make CHECK_DTBS=y" even without the changes in the PHY tree. This series (including dependencies) can also be found in git: https://github.com/floatious/linux/commits/rockchip-pcie-ep-v1 Testing done: This series has been tested with two rock5b:s, one running in RC mode and one running in EP mode. This series has also been tested with an Intel x86 host and rock5b running in EP mode. BAR4 exposes the ATU Port Logic Structure and the DMA Port Logic Structure to the host. The EPC controller driver thus disables this BAR as init time, because if it doesn't, when the host writes the test pattern to this BAR, all the iATU settings will get wiped, resulting in all further BAR accesses being non-functional. Running pcitest.sh (modified to also perform the READ and WRITE tests with the -d option, i.e. with DMA enabled) results in the following: $ /usr/bin/pcitest.sh BAR tests BAR0: OKAY BAR1: OKAY BAR2: OKAY BAR3: OKAY BAR4: NOT OKAY BAR5: OKAY Interrupt tests SET IRQ TYPE TO LEGACY: OKAY LEGACY IRQ: NOT OKAY SET IRQ TYPE TO MSI: OKAY MSI1: OKAY MSI2: OKAY MSI3: OKAY MSI4: OKAY MSI5: OKAY MSI6: OKAY MSI7: OKAY MSI8: OKAY MSI9: OKAY MSI10: OKAY MSI11: OKAY MSI12: OKAY MSI13: OKAY MSI14: OKAY MSI15: OKAY MSI16: OKAY MSI17: OKAY MSI18: OKAY MSI19: OKAY MSI20: OKAY MSI21: OKAY MSI22: OKAY MSI23: OKAY MSI24: OKAY MSI25: OKAY MSI26: OKAY MSI27: OKAY MSI28: OKAY MSI29: OKAY MSI30: OKAY MSI31: OKAY MSI32: OKAY SET IRQ TYPE TO MSI-X: OKAY MSI-X1: OKAY MSI-X2: OKAY MSI-X3: OKAY MSI-X4: OKAY MSI-X5: OKAY MSI-X6: OKAY MSI-X7: OKAY MSI-X8: OKAY MSI-X9: OKAY MSI-X10: OKAY MSI-X11: OKAY MSI-X12: OKAY MSI-X13: OKAY MSI-X14: OKAY MSI-X15: OKAY MSI-X16: OKAY MSI-X17: OKAY MSI-X18: OKAY MSI-X19: OKAY MSI-X20: OKAY MSI-X21: OKAY MSI-X22: OKAY MSI-X23: OKAY MSI-X24: OKAY MSI-X25: OKAY MSI-X26: OKAY MSI-X27: OKAY MSI-X28: OKAY MSI-X29: OKAY MSI-X30: OKAY MSI-X31: OKAY MSI-X32: OKAY Read Tests SET IRQ TYPE TO MSI: OKAY READ ( 1 bytes): OKAY READ ( 1024 bytes): OKAY READ ( 1025 bytes): OKAY READ (1024000 bytes): OKAY READ (1024001 bytes): OKAY Write Tests WRITE ( 1 bytes): OKAY WRITE ( 1024 bytes): OKAY WRITE ( 1025 bytes): OKAY WRITE (1024000 bytes): OKAY WRITE (1024001 bytes): OKAY Copy Tests COPY ( 1 bytes): OKAY COPY ( 1024 bytes): OKAY COPY ( 1025 bytes): OKAY COPY (1024000 bytes): OKAY COPY (1024001 bytes): OKAY Read Tests DMA READ ( 1 bytes): OKAY READ ( 1024 bytes): OKAY READ ( 1025 bytes): OKAY READ (1024000 bytes): OKAY READ (1024001 bytes): OKAY Write Tests DMA WRITE ( 1 bytes): OKAY WRITE ( 1024 bytes): OKAY WRITE ( 1025 bytes): OKAY WRITE (1024000 bytes): OKAY WRITE (1024001 bytes): OKAY Corresponding output on the EP side: rockchip-dw-pcie a40000000.pcie-ep: EP cannot raise INTX IRQs pci_epf_test pci_epf_test.0: WRITE => Size: 1 B, DMA: NO, Time: 0.000000292 s, Rate: 3424 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1024 B, DMA: NO, Time: 0.000007583 s, Rate: 135038 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1025 B, DMA: NO, Time: 0.000007584 s, Rate: 135152 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1024000 B, DMA: NO, Time: 0.009164167 s, Rate: 111739 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1024001 B, DMA: NO, Time: 0.009164458 s, Rate: 111736 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1 B, DMA: NO, Time: 0.000001750 s, Rate: 571 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1024 B, DMA: NO, Time: 0.000147875 s, Rate: 6924 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1025 B, DMA: NO, Time: 0.000149041 s, Rate: 6877 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1024000 B, DMA: NO, Time: 0.147537833 s, Rate: 6940 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1024001 B, DMA: NO, Time: 0.147533750 s, Rate: 6940 KB/s pci_epf_test pci_epf_test.0: COPY => Size: 1 B, DMA: NO, Time: 0.000003208 s, Rate: 311 KB/s pci_epf_test pci_epf_test.0: COPY => Size: 1024 B, DMA: NO, Time: 0.000156625 s, Rate: 6537 KB/s pci_epf_test pci_epf_test.0: COPY => Size: 1025 B, DMA: NO, Time: 0.000158375 s, Rate: 6471 KB/s pci_epf_test pci_epf_test.0: COPY => Size: 1024000 B, DMA: NO, Time: 0.156902666 s, Rate: 6526 KB/s pci_epf_test pci_epf_test.0: COPY => Size: 1024001 B, DMA: NO, Time: 0.156847833 s, Rate: 6528 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1 B, DMA: YES, Time: 0.000185500 s, Rate: 5 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1024 B, DMA: YES, Time: 0.000177334 s, Rate: 5774 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1025 B, DMA: YES, Time: 0.000178792 s, Rate: 5732 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1024000 B, DMA: YES, Time: 0.000486209 s, Rate: 2106090 KB/s pci_epf_test pci_epf_test.0: WRITE => Size: 1024001 B, DMA: YES, Time: 0.000486791 s, Rate: 2103574 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1 B, DMA: YES, Time: 0.000177333 s, Rate: 5 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1024 B, DMA: YES, Time: 0.000177625 s, Rate: 5764 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1025 B, DMA: YES, Time: 0.000171208 s, Rate: 5986 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1024000 B, DMA: YES, Time: 0.000701167 s, Rate: 1460422 KB/s pci_epf_test pci_epf_test.0: READ => Size: 1024001 B, DMA: YES, Time: 0.000702625 s, Rate: 1457393 KB/s Kind regards, Niklas --- Niklas Cassel (12): dt-bindings: PCI: snps,dw-pcie-ep: Add vendor specific reg-name dt-bindings: PCI: snps,dw-pcie-ep: Add vendor specific interrupt-names dt-bindings: PCI: snps,dw-pcie-ep: Add tx_int{a,b,c,d} legacy irqs dt-bindings: rockchip: Add DesignWare based PCIe Endpoint controller PCI: dw-rockchip: Fix weird indentation PCI: dw-rockchip: Add rockchip_pcie_ltssm() helper PCI: dw-rockchip: Refactor the driver to prepare for EP mode PCI: dw-rockchip: Add explicit rockchip,rk3588-pcie compatible PCI: dw-rockchip: Add endpoint mode support misc: pci_endpoint_test: Add support for rockchip rk3588 arm64: dts: rockchip: Add PCIe endpoint mode support arm64: dts: rockchip: Add rock5b overlays for PCIe endpoint mode .../bindings/pci/rockchip-dw-pcie-ep.yaml | 192 +++++++++++++++ .../devicetree/bindings/pci/snps,dw-pcie-ep.yaml | 13 +- arch/arm64/boot/dts/rockchip/Makefile | 5 + .../boot/dts/rockchip/rk3588-rock-5b-pcie-ep.dtso | 25 ++ .../dts/rockchip/rk3588-rock-5b-pcie-srns.dtso | 16 ++ arch/arm64/boot/dts/rockchip/rk3588.dtsi | 35 +++ drivers/misc/pci_endpoint_test.c | 11 + drivers/pci/controller/dwc/Kconfig | 17 +- drivers/pci/controller/dwc/pcie-dw-rockchip.c | 263 +++++++++++++++++++-- 9 files changed, 552 insertions(+), 25 deletions(-) --- base-commit: b88f21dc523c39db93b1d3e29c4ede34ac8cdc3c change-id: 20240424-rockchip-pcie-ep-v1-87c78b16d53c Best regards, -- Niklas Cassel <cassel@xxxxxxxxxx>
