Hi, On 04/01/21 9:16 pm, Kishon Vijay Abraham I wrote: > +MAINTAINERS for platforms supporting PCIe EP mode > > Hi All, > > I've looped you in since the platform you maintain supports PCIe EP > mode. This series builds NTB functionality on top of PCIe endpoint > framework. For NTB functionality it needs atleast two endpoint > instances. I'm trying to see if someone can help me test this series in > any of the platforms you support. > > Even if your platform cannot enable NTB, if you can just apply this > patch series and test pci_epf_test that would be very much helpful. > > Thanks in advance for your help. Gentle ping for providing your "Reviewed-by" and "Tested-by". Thank You, Kishon > > Best Regards, > Kishon > > On 04/01/21 8:58 pm, Kishon Vijay Abraham I wrote: >> This series is about implementing SW defined Non-Transparent Bridge (NTB) >> using multiple endpoint (EP) instances. This series has been tested using >> 2 endpoint instances in J7 connected to J7 board on one end and DRA7 board >> on the other end. However there is nothing platform specific for the NTB >> functionality. >> >> This was presented in Linux Plumbers Conference. Link to presentation >> and video can be found @ [1] >> Created a video demo @ [9] >> >> RFC patch series can be found @ [2] >> v1 patch series can be found @ [3] >> v2 patch series can be found @ [4] >> v3 patch series can be found @ [5] >> v4 patch series can be found @ [6] >> v5 patch series can be found @ [7] >> v6 patch series can be found @ [8] >> v7 patch series can be found @ [10] >> v8 patch series can be found @ [11] >> >> Changes from v8: >> 1) Do not use devm_request_irq/devm_free_irq as pci_free_irq_vectors() >> has to be used after free_irq >> 2) Drop "NTB: tool: Enable the NTB/PCIe link on the local or remote side >> of bridge" as there is a debugfs entry to enable the link >> >> Changes from v7: >> 1) Used values stored in ctrl_reg_bar, peer_spad_reg_bar and db_reg_bar >> instead of hardcoded values in pci_iomap of ntb_hw_epf.c driver >> >> Changes from v6: >> 1) Fixed issues when multiple NTB devices are creating using multiple >> functions >> 2) Fixed issue with writing scratchpad register >> 3) Created a video demo @ [9] >> >> Changes from v5: >> 1) Fixed a formatting issue in Kconfig pointed out by Randy >> 2) Checked for Error or Null in pci_epc_add_epf() >> >> Changes from v4: >> 1) Fixed error condition checks in pci_epc_add_epf() >> >> Changes from v3: >> 1) Fixed Documentation edits suggested by Randy Dunlap <rdunlap@xxxxxxxxxxxxx> >> >> Changes from v2: >> 1) Add support for the user to create sub-directory of 'EPF Device' >> directory (for endpoint function specific configuration using >> configfs). >> 2) Add documentation for NTB specific attributes in configfs >> 3) Check for PCI_CLASS_MEMORY_RAM (PCIe class) before binding ntb_hw_epf >> driver >> 4) Other documentation fixes >> >> Changes from v1: >> 1) As per Rob's comment, removed support for creating NTB function >> device from DT >> 2) Add support to create NTB EPF device using configfs (added support in >> configfs to associate primary and secondary EPC with EPF. >> >> Changes from RFC: >> 1) Converted the DT binding patches to YAML schema and merged the >> DT binding patches together >> 2) NTB documentation is converted to .rst >> 3) One HOST can now interrupt the other HOST using MSI-X interrupts >> 4) Added support for teardown of memory window and doorbell >> configuration >> 5) Add support to provide support 64-bit memory window size from >> DT >> >> [1] -> https://linuxplumbersconf.org/event/4/contributions/395/ >> [2] -> http://lore.kernel.org/r/20190926112933.8922-1-kishon@xxxxxx >> [3] -> http://lore.kernel.org/r/20200514145927.17555-1-kishon@xxxxxx >> [4] -> http://lore.kernel.org/r/20200611130525.22746-1-kishon@xxxxxx >> [5] -> http://lore.kernel.org/r/20200904075052.8911-1-kishon@xxxxxx >> [6] -> http://lore.kernel.org/r/20200915042110.3015-1-kishon@xxxxxx >> [7] -> http://lore.kernel.org/r/20200918064227.1463-1-kishon@xxxxxx >> [8] -> http://lore.kernel.org/r/20200924092519.17082-1-kishon@xxxxxx >> [9] -> https://youtu.be/dLKKxrg5-rY >> [10] -> http://lore.kernel.org/r/20200930153519.7282-1-kishon@xxxxxx >> [11] -> http://lore.kernel.org/r/20201111153559.19050-1-kishon@xxxxxx >> >> Kishon Vijay Abraham I (17): >> Documentation: PCI: Add specification for the *PCI NTB* function >> device >> PCI: endpoint: Make *_get_first_free_bar() take into account 64 bit >> BAR >> PCI: endpoint: Add helper API to get the 'next' unreserved BAR >> PCI: endpoint: Make *_free_bar() to return error codes on failure >> PCI: endpoint: Remove unused pci_epf_match_device() >> PCI: endpoint: Add support to associate secondary EPC with EPF >> PCI: endpoint: Add support in configfs to associate two EPCs with EPF >> PCI: endpoint: Add pci_epc_ops to map MSI irq >> PCI: endpoint: Add pci_epf_ops for epf drivers to expose function >> specific attrs >> PCI: endpoint: Allow user to create sub-directory of 'EPF Device' >> directory >> PCI: cadence: Implement ->msi_map_irq() ops >> PCI: cadence: Configure LM_EP_FUNC_CFG based on epc->function_num_map >> PCI: endpoint: Add EP function driver to provide NTB functionality >> PCI: Add TI J721E device to pci ids >> NTB: Add support for EPF PCI-Express Non-Transparent Bridge >> Documentation: PCI: Add configfs binding documentation for pci-ntb >> endpoint function >> Documentation: PCI: Add userguide for PCI endpoint NTB function >> >> .../PCI/endpoint/function/binding/pci-ntb.rst | 38 + >> Documentation/PCI/endpoint/index.rst | 3 + >> .../PCI/endpoint/pci-endpoint-cfs.rst | 10 + >> .../PCI/endpoint/pci-ntb-function.rst | 351 +++ >> Documentation/PCI/endpoint/pci-ntb-howto.rst | 160 ++ >> drivers/misc/pci_endpoint_test.c | 1 - >> drivers/ntb/hw/Kconfig | 1 + >> drivers/ntb/hw/Makefile | 1 + >> drivers/ntb/hw/epf/Kconfig | 6 + >> drivers/ntb/hw/epf/Makefile | 1 + >> drivers/ntb/hw/epf/ntb_hw_epf.c | 754 ++++++ >> .../pci/controller/cadence/pcie-cadence-ep.c | 60 +- >> drivers/pci/endpoint/functions/Kconfig | 12 + >> drivers/pci/endpoint/functions/Makefile | 1 + >> drivers/pci/endpoint/functions/pci-epf-ntb.c | 2114 +++++++++++++++++ >> drivers/pci/endpoint/functions/pci-epf-test.c | 13 +- >> drivers/pci/endpoint/pci-ep-cfs.c | 176 +- >> drivers/pci/endpoint/pci-epc-core.c | 130 +- >> drivers/pci/endpoint/pci-epf-core.c | 105 +- >> include/linux/pci-epc.h | 39 +- >> include/linux/pci-epf.h | 28 +- >> include/linux/pci_ids.h | 1 + >> 22 files changed, 3932 insertions(+), 73 deletions(-) >> create mode 100644 Documentation/PCI/endpoint/function/binding/pci-ntb.rst >> create mode 100644 Documentation/PCI/endpoint/pci-ntb-function.rst >> create mode 100644 Documentation/PCI/endpoint/pci-ntb-howto.rst >> create mode 100644 drivers/ntb/hw/epf/Kconfig >> create mode 100644 drivers/ntb/hw/epf/Makefile >> create mode 100644 drivers/ntb/hw/epf/ntb_hw_epf.c >> create mode 100644 drivers/pci/endpoint/functions/pci-epf-ntb.c >>
