[RFC,0/4] NTB function for PCIe RC to EP connection

Message ID	20220215053844.7119-1-Frank.Li@nxp.com (mailing list archive)
Headers	show Return-Path: <linux-pci-owner@kernel.org> From: Frank Li <Frank.Li@nxp.com> To: linux-pci@vger.kernel.org, kishon@ti.com, lorenzo.pieralisi@arm.com, kw@linux.com, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, lznuaa@gmail.com, hongxing.zhu@nxp.com Subject: [RFC PATCH 0/4] NTB function for PCIe RC to EP connection Date: Mon, 14 Feb 2022 23:38:40 -0600 Message-Id: <20220215053844.7119-1-Frank.Li@nxp.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit MIME-Version: 1.0 Precedence: bulk
Series	NTB function for PCIe RC to EP connection \| expand [RFC,0/4] NTB function for PCIe RC to EP connection [RFC,1/4] PCI: designware-ep: Allow pcie_ep_set_bar change inbound map address [RFC,2/4] NTB: epf: Added more flexible memory map method [RFC,3/4] NTB: EPF: support NTB transfer between PCI RC and EP connection [RFC,4/4] Documentation: PCI: Add specification for the PCI vNTB function device

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20220215053844.7119-1-Frank.Li@nxp.com (mailing list archive)

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From: Frank Li <Frank.Li@nxp.com>
To: linux-pci@vger.kernel.org, kishon@ti.com,
        lorenzo.pieralisi@arm.com, kw@linux.com, jingoohan1@gmail.com,
        gustavo.pimentel@synopsys.com, lznuaa@gmail.com,
        hongxing.zhu@nxp.com
Subject: [RFC PATCH 0/4] NTB function for PCIe RC to EP connection
Date: Mon, 14 Feb 2022 23:38:40 -0600
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Series

NTB function for PCIe RC to EP connection | expand

Message

Frank Li Feb. 15, 2022, 5:38 a.m. UTC

This implement NTB function for PCIe EP to RC connections.
The existed ntb epf need two PCI EPs and two PCI Host. 

This just need EP to RC connections.

    ┌────────────┐         ┌─────────────────────────────────────┐
    │            │         │                                     │
    ├────────────┤         │                      ┌──────────────┤
    │ NTB        │         │                      │ NTB          │
    │ NetDev     │         │                      │ NetDev       │
    ├────────────┤         │                      ├──────────────┤
    │ NTB        │         │                      │ NTB          │
    │ Transfer   │         │                      │ Transfer     │
    ├────────────┤         │                      ├──────────────┤
    │            │         │                      │              │
    │  PCI NTB   │         │                      │              │
    │    EPF     │         │                      │              │
    │   Driver   │         │                      │ PCI Virtual  │
    │            │         ├───────────────┐      │ NTB Driver   │
    │            │         │ PCI EP NTB    │◄────►│              │
    │            │         │  FN Driver    │      │              │
    ├────────────┤         ├───────────────┤      ├──────────────┤
    │            │         │               │      │              │
    │  PCI BUS   │ ◄─────► │  PCI EP BUS   │      │  Virtual PCI │
    │            │  PCI    │               │      │     BUS      │
    └────────────┘         └───────────────┴──────┴──────────────┘
        PCI RC                        PCI EP



Frank Li (4):
  PCI: designware-ep: Allow pcie_ep_set_bar change inbound map address
  NTB: epf: Added more flexible memory map method
  NTB: EPF: support NTB transfer between PCI RC and EP connection
  Documentation: PCI: Add specification for the PCI vNTB function device

 Documentation/PCI/endpoint/index.rst          |    2 +
 .../PCI/endpoint/pci-vntb-function.rst        |  126 ++
 Documentation/PCI/endpoint/pci-vntb-howto.rst |  161 ++
 drivers/ntb/hw/epf/ntb_hw_epf.c               |   48 +-
 .../pci/controller/dwc/pcie-designware-ep.c   |   10 +-
 drivers/pci/endpoint/functions/Kconfig        |   11 +
 drivers/pci/endpoint/functions/Makefile       |    1 +
 drivers/pci/endpoint/functions/pci-epf-vntb.c | 1425 +++++++++++++++++
 8 files changed, 1770 insertions(+), 14 deletions(-)
 create mode 100644 Documentation/PCI/endpoint/pci-vntb-function.rst
 create mode 100644 Documentation/PCI/endpoint/pci-vntb-howto.rst
 create mode 100644 drivers/pci/endpoint/functions/pci-epf-vntb.c