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Date: Thu, 24 Sep 2020 14:55:18 +0530 From: Kishon Vijay Abraham I <kishon@...com> To: Bjorn Helgaas <bhelgaas@...gle.com>, Jonathan Corbet <corbet@....net>, Kishon Vijay Abraham I <kishon@...com>, Lorenzo Pieralisi <lorenzo.pieralisi@....com>, Arnd Bergmann <arnd@...db.de>, Jon Mason <jdmason@...zu.us>, Dave Jiang <dave.jiang@...el.com>, Allen Hubbe <allenbh@...il.com>, Tom Joseph <tjoseph@...ence.com>, Rob Herring <robh@...nel.org> CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, <linux-pci@...r.kernel.org>, <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-ntb@...glegroups.com> Subject: [PATCH v6 16/17] Documentation: PCI: Add configfs binding documentation for pci-ntb endpoint function Add binding documentation for pci-ntb endpoint function that helps in adding and configuring pci-ntb endpoint function. Signed-off-by: Kishon Vijay Abraham I <kishon@...com> --- .../PCI/endpoint/function/binding/pci-ntb.rst | 38 +++++++++++++++++++ Documentation/PCI/endpoint/index.rst | 1 + 2 files changed, 39 insertions(+) create mode 100644 Documentation/PCI/endpoint/function/binding/pci-ntb.rst diff --git a/Documentation/PCI/endpoint/function/binding/pci-ntb.rst b/Documentation/PCI/endpoint/function/binding/pci-ntb.rst new file mode 100644 index 000000000000..40253d3d5163 --- /dev/null +++ b/Documentation/PCI/endpoint/function/binding/pci-ntb.rst @@ -0,0 +1,38 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================== +PCI NTB Endpoint Function +========================== + +1) Create a subdirectory to pci_epf_ntb directory in configfs. + +Standard EPF Configurable Fields: + +================ =========================================================== +vendorid should be 0x104c +deviceid should be 0xb00d for TI's J721E SoC +revid don't care +progif_code don't care +subclass_code should be 0x00 +baseclass_code should be 0x5 +cache_line_size don't care +subsys_vendor_id don't care +subsys_id don't care +interrupt_pin don't care +msi_interrupts don't care +msix_interrupts don't care +================ =========================================================== + +2) Create a subdirectory to directory created in 1 + +NTB EPF specific configurable fields: + +================ =========================================================== +db_count Number of doorbells; default = 4 +mw1 size of memory window1 +mw2 size of memory window2 +mw3 size of memory window3 +mw4 size of memory window4 +num_mws Number of memory windows; max = 4 +spad_count Number of scratchpad registers; default = 64 +================ =========================================================== diff --git a/Documentation/PCI/endpoint/index.rst b/Documentation/PCI/endpoint/index.rst index ef6861128506..9cb6e5f3c4d5 100644 --- a/Documentation/PCI/endpoint/index.rst +++ b/Documentation/PCI/endpoint/index.rst @@ -14,3 +14,4 @@ PCI Endpoint Framework pci-ntb-function function/binding/pci-test + function/binding/pci-ntb -- 2.17.1
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