This patch series *) adds PCI endpoint core layer *) modifies designware/dra7xx driver to be configured in EP mode *) adds a PCI endpoint *test* function driver Known Limitation: *) Does not support multi-function devices TODO: *) access buffers in RC *) MSI interrupts *) Enable user space control for the RC side PCI driver *) Adapt all other users of designware to use the new design HOW TO: ON THE EP SIDE: *************** /* EP function is configured using configfs */ # mount -t configfs none /sys/kernel/config /* PCI EP core layer creates "pci_ep" entry in configfs */ # cd /sys/kernel/config/pci_ep/ /* * This is the 1st step in creating an endpoint function. This * creates the endpoint function device *instance*. The string * before the .<num> suffix will identify the driver this * EP function will bind to. * Just pci_epf_test is also valid. The .<num> suffix is used * if there are multiple PCI controllers and all of them wants * to use the same function. */ # mkdir pci_epf_test.0 /* * When the above command is given, the function device will * also be bound to a function driver. To find the list of * function drivers available in the system, use the following * command. To create a new driver, the following can be referred * drivers/pci/endpoint/functions/pci-epf-test.c */ # ls /sys/bus/pci-epf/drivers pci_epf_test /* Now configure the endpoint function */ # cd pci_epf_test.0 /* These are the fields that can be configured */ # ls baseclass_code function revid vendorid cache_line_size interrupt_pin subclass_code deviceid peripheral subsys_id epc progif_code subsys_vendor_id /* The function driver will populate these fields with default values */ # cat vendorid 0xffff # cat interrupt_pin 0x0001 /* The user can configure any of these fields */ # echo 0x104c > vendorid /* * Next is binding this function driver to the controller driver. In * order to find the possible controller drivers that this function * driver can be bound to, the following sysfs entry can be used */ # ls /sys/class/pci_epc/ 51000000.pci /* Now bind the function driver to the controller driver */ # echo "51000000.pcie" > epc [ 494.743487] dra7-pcie 51000000.pcie: no free inbound window [ 494.749367] pci_epf_test pci_epf_test.0: failed to set BAR4 [ 494.755238] dra7-pcie 51000000.pcie: no free inbound window [ 494.761451] pci_epf_test pci_epf_test.0: failed to set BAR5 /* * the above error messages are due to non availability of free * inbound windows. So the function drivers in dra7xx can use * only 4 (BAR0..BAR3) BARs */ /****** PCI endpoint is configured ******/ ON THE HOST SIDE: ***************** # modprobe pci_endpoint_test [ 8.197560] ****** Testing pci-endpoint-test Device ****** [ 9.056990] Reset: OKAY [ 9.059753] BAR1 OKAY [ 9.062419] BAR2 OKAY [ 9.069506] BAR3 OKAY [ 9.071880] BAR4 NOT OKAY [ 9.074618] BAR5 NOT OKAY [ 9.379257] Legacy IRQ: OKAY [ 9.382281] ****** End Test ****** /* * Rightnow these tests gets executed as soon as the pci_endpoint_test * module gets inserted. These will be modified so that user/user script * can control this. Once the functionality for EP to access RC buffer * is added, more tests can be added including throughput measurement tests. */ Kishon Vijay Abraham I (11): pci: endpoint: add EP core layer to enable EP controller and EP functions pci: endpoint: introduce configfs entry for configuring EP functions Documentation: PCI: guide to use PCI Endpoint Core Layer pci: endpoint: functions: add an EP function to test PCI pci: rename *host* directory to *controller* pci: controller: split designware into *core* and *host* pci: controller: designware: Add EP mode support pci: controller: dra7xx: Add EP mode support misc: add a new host side PCI endpoint test driver ARM: dts: DRA7: Modify pcie1 dt node for EP mode HACK: pci: controller: dra7xx: disable smart idle Documentation/PCI/00-INDEX | 5 + Documentation/PCI/pci-endpoint.txt | 199 ++++++++++ Documentation/PCI/pci-test.txt | 79 ++++ .../devicetree/bindings/pci/designware-pcie.txt | 26 +- Documentation/devicetree/bindings/pci/ti-pci.txt | 30 +- MAINTAINERS | 50 +-- arch/arm/boot/dts/dra7.dtsi | 43 +-- drivers/Makefile | 4 + drivers/misc/Kconfig | 7 + drivers/misc/Makefile | 1 + drivers/misc/pci_endpoint_test.c | 291 +++++++++++++++ drivers/pci/Kconfig | 3 +- drivers/pci/Makefile | 3 - drivers/pci/{host => controller}/Kconfig | 109 +++++- drivers/pci/{host => controller}/Makefile | 2 + drivers/pci/{host => controller}/pci-aardvark.c | 0 drivers/pci/{host => controller}/pci-dra7xx.c | 340 +++++++++++++---- drivers/pci/{host => controller}/pci-exynos.c | 0 drivers/pci/{host => controller}/pci-host-common.c | 0 .../pci/{host => controller}/pci-host-generic.c | 0 drivers/pci/{host => controller}/pci-hyperv.c | 0 drivers/pci/{host => controller}/pci-imx6.c | 0 drivers/pci/{host => controller}/pci-keystone-dw.c | 0 drivers/pci/{host => controller}/pci-keystone.c | 0 drivers/pci/{host => controller}/pci-keystone.h | 0 drivers/pci/{host => controller}/pci-layerscape.c | 0 drivers/pci/{host => controller}/pci-mvebu.c | 0 drivers/pci/{host => controller}/pci-rcar-gen2.c | 0 drivers/pci/{host => controller}/pci-tegra.c | 0 .../pci/{host => controller}/pci-thunder-ecam.c | 0 drivers/pci/{host => controller}/pci-thunder-pem.c | 0 drivers/pci/{host => controller}/pci-versatile.c | 0 drivers/pci/{host => controller}/pci-xgene-msi.c | 0 drivers/pci/{host => controller}/pci-xgene.c | 0 drivers/pci/{host => controller}/pcie-altera-msi.c | 0 drivers/pci/{host => controller}/pcie-altera.c | 0 drivers/pci/{host => controller}/pcie-armada8k.c | 0 drivers/pci/{host => controller}/pcie-artpec6.c | 0 drivers/pci/controller/pcie-designware-ep.c | 228 ++++++++++++ .../pcie-designware-host.c} | 294 +++------------ .../{host => controller}/pcie-designware-plat.c | 0 drivers/pci/controller/pcie-designware.c | 233 ++++++++++++ drivers/pci/controller/pcie-designware.h | 238 ++++++++++++ drivers/pci/{host => controller}/pcie-hisi.c | 0 drivers/pci/{host => controller}/pcie-iproc-bcma.c | 0 drivers/pci/{host => controller}/pcie-iproc-msi.c | 0 .../pci/{host => controller}/pcie-iproc-platform.c | 0 drivers/pci/{host => controller}/pcie-iproc.c | 0 drivers/pci/{host => controller}/pcie-iproc.h | 0 drivers/pci/{host => controller}/pcie-qcom.c | 0 drivers/pci/{host => controller}/pcie-rcar.c | 0 drivers/pci/{host => controller}/pcie-spear13xx.c | 0 drivers/pci/{host => controller}/pcie-xilinx-nwl.c | 0 drivers/pci/{host => controller}/pcie-xilinx.c | 0 drivers/pci/endpoint/Kconfig | 25 ++ drivers/pci/endpoint/Makefile | 6 + drivers/pci/endpoint/functions/Kconfig | 12 + drivers/pci/endpoint/functions/Makefile | 5 + drivers/pci/endpoint/functions/pci-epf-test.c | 272 ++++++++++++++ drivers/pci/endpoint/pci-ep-cfs.c | 275 ++++++++++++++ drivers/pci/endpoint/pci-epc-core.c | 389 ++++++++++++++++++++ drivers/pci/endpoint/pci-epf-core.c | 338 +++++++++++++++++ drivers/pci/host/pcie-designware.h | 89 ----- include/linux/mod_devicetable.h | 10 + include/linux/pci-epc.h | 100 +++++ include/linux/pci-epf.h | 159 ++++++++ 66 files changed, 3373 insertions(+), 492 deletions(-) create mode 100644 Documentation/PCI/pci-endpoint.txt create mode 100644 Documentation/PCI/pci-test.txt create mode 100644 drivers/misc/pci_endpoint_test.c rename drivers/pci/{host => controller}/Kconfig (79%) rename drivers/pci/{host => controller}/Makefile (93%) rename drivers/pci/{host => controller}/pci-aardvark.c (100%) rename drivers/pci/{host => controller}/pci-dra7xx.c (62%) rename drivers/pci/{host => controller}/pci-exynos.c (100%) rename drivers/pci/{host => controller}/pci-host-common.c (100%) rename drivers/pci/{host => controller}/pci-host-generic.c (100%) rename drivers/pci/{host => controller}/pci-hyperv.c (100%) rename drivers/pci/{host => controller}/pci-imx6.c (100%) rename drivers/pci/{host => controller}/pci-keystone-dw.c (100%) rename drivers/pci/{host => controller}/pci-keystone.c (100%) rename drivers/pci/{host => controller}/pci-keystone.h (100%) rename drivers/pci/{host => controller}/pci-layerscape.c (100%) rename drivers/pci/{host => controller}/pci-mvebu.c (100%) rename drivers/pci/{host => controller}/pci-rcar-gen2.c (100%) rename drivers/pci/{host => controller}/pci-tegra.c (100%) rename drivers/pci/{host => controller}/pci-thunder-ecam.c (100%) rename drivers/pci/{host => controller}/pci-thunder-pem.c (100%) rename drivers/pci/{host => controller}/pci-versatile.c (100%) rename drivers/pci/{host => controller}/pci-xgene-msi.c (100%) rename drivers/pci/{host => controller}/pci-xgene.c (100%) rename drivers/pci/{host => controller}/pcie-altera-msi.c (100%) rename drivers/pci/{host => controller}/pcie-altera.c (100%) rename drivers/pci/{host => controller}/pcie-armada8k.c (100%) rename drivers/pci/{host => controller}/pcie-artpec6.c (100%) create mode 100644 drivers/pci/controller/pcie-designware-ep.c rename drivers/pci/{host/pcie-designware.c => controller/pcie-designware-host.c} (64%) rename drivers/pci/{host => controller}/pcie-designware-plat.c (100%) create mode 100644 drivers/pci/controller/pcie-designware.c create mode 100644 drivers/pci/controller/pcie-designware.h rename drivers/pci/{host => controller}/pcie-hisi.c (100%) rename drivers/pci/{host => controller}/pcie-iproc-bcma.c (100%) rename drivers/pci/{host => controller}/pcie-iproc-msi.c (100%) rename drivers/pci/{host => controller}/pcie-iproc-platform.c (100%) rename drivers/pci/{host => controller}/pcie-iproc.c (100%) rename drivers/pci/{host => controller}/pcie-iproc.h (100%) rename drivers/pci/{host => controller}/pcie-qcom.c (100%) rename drivers/pci/{host => controller}/pcie-rcar.c (100%) rename drivers/pci/{host => controller}/pcie-spear13xx.c (100%) rename drivers/pci/{host => controller}/pcie-xilinx-nwl.c (100%) rename drivers/pci/{host => controller}/pcie-xilinx.c (100%) create mode 100644 drivers/pci/endpoint/Kconfig create mode 100644 drivers/pci/endpoint/Makefile create mode 100644 drivers/pci/endpoint/functions/Kconfig create mode 100644 drivers/pci/endpoint/functions/Makefile create mode 100644 drivers/pci/endpoint/functions/pci-epf-test.c create mode 100644 drivers/pci/endpoint/pci-ep-cfs.c create mode 100644 drivers/pci/endpoint/pci-epc-core.c create mode 100644 drivers/pci/endpoint/pci-epf-core.c delete mode 100644 drivers/pci/host/pcie-designware.h create mode 100644 include/linux/pci-epc.h create mode 100644 include/linux/pci-epf.h -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html