Re: [PATCH v4 36/63] Documentation: PCI: convert endpoint/pci-test-howto.txt to reST

Mauro Carvalho Chehab
2019-04-24T17:00:35Z

Em Wed, 24 Apr 2019 00:29:05 +0800
Changbin Du <changbin.du@gmail.com> escreveu:

> This converts the plain text documentation to reStructuredText format and
> add it to Sphinx TOC tree. No essential content change.
>
> Signed-off-by: Changbin Du <changbin.du@gmail.com>
> Acked-by: Bjorn Helgaas <bhelgaas@google.com>

Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

> ---
> Documentation/PCI/endpoint/index.rst | 1 +
> ...{pci-test-howto.txt => pci-test-howto.rst} | 81 +++++++++++++------
> 2 files changed, 56 insertions(+), 26 deletions(-)
> rename Documentation/PCI/endpoint/{pci-test-howto.txt => pci-test-howto.rst} (78%)
>
> diff --git a/Documentation/PCI/endpoint/index.rst b/Documentation/PCI/endpoint/index.rst
> index b680a3fc4fec..d114ea74b444 100644
> --- a/Documentation/PCI/endpoint/index.rst
> +++ b/Documentation/PCI/endpoint/index.rst
> @@ -10,3 +10,4 @@ PCI Endpoint Framework
> pci-endpoint
> pci-endpoint-cfs
> pci-test-function
> + pci-test-howto
> diff --git a/Documentation/PCI/endpoint/pci-test-howto.txt b/Documentation/PCI/endpoint/pci-test-howto.rst
> similarity index 78%
> rename from Documentation/PCI/endpoint/pci-test-howto.txt
> rename to Documentation/PCI/endpoint/pci-test-howto.rst
> index 040479f437a5..909f770a07d6 100644
> --- a/Documentation/PCI/endpoint/pci-test-howto.txt
> +++ b/Documentation/PCI/endpoint/pci-test-howto.rst
> @@ -1,38 +1,51 @@
> - PCI TEST USERGUIDE
> - Kishon Vijay Abraham I <kishon@ti.com>
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +===================
> +PCI Test User Guide
> +===================
> +
> +:Author: Kishon Vijay Abraham I <kishon@ti.com>
>
> This document is a guide to help users use pci-epf-test function driver
> and pci_endpoint_test host driver for testing PCI. The list of steps to
> be followed in the host side and EP side is given below.
>
> -1. Endpoint Device
> +Endpoint Device
> +===============
>
> -1.1 Endpoint Controller Devices
> +Endpoint Controller Devices
> +---------------------------
>
> -To find the list of endpoint controller devices in the system:
> +To find the list of endpoint controller devices in the system::
>
> # ls /sys/class/pci_epc/
> 51000000.pcie_ep
>
> -If PCI_ENDPOINT_CONFIGFS is enabled
> +If PCI_ENDPOINT_CONFIGFS is enabled::
> +
> # ls /sys/kernel/config/pci_ep/controllers
> 51000000.pcie_ep
>
> -1.2 Endpoint Function Drivers
>
> -To find the list of endpoint function drivers in the system:
> +Endpoint Function Drivers
> +-------------------------
> +
> +To find the list of endpoint function drivers in the system::
>
> # ls /sys/bus/pci-epf/drivers
> pci_epf_test
>
> -If PCI_ENDPOINT_CONFIGFS is enabled
> +If PCI_ENDPOINT_CONFIGFS is enabled::
> +
> # ls /sys/kernel/config/pci_ep/functions
> pci_epf_test
>
> -1.3 Creating pci-epf-test Device
> +
> +Creating pci-epf-test Device
> +----------------------------
>
> PCI endpoint function device can be created using the configfs. To create
> -pci-epf-test device, the following commands can be used
> +pci-epf-test device, the following commands can be used::
>
> # mount -t configfs none /sys/kernel/config
> # cd /sys/kernel/config/pci_ep/
> @@ -42,7 +55,7 @@ The "mkdir func1" above creates the pci-epf-test function device that will
> be probed by pci_epf_test driver.
>
> The PCI endpoint framework populates the directory with the following
> -configurable fields.
> +configurable fields::
>
> # ls functions/pci_epf_test/func1
> baseclass_code interrupt_pin progif_code subsys_id
> @@ -51,67 +64,83 @@ configurable fields.
>
> The PCI endpoint function driver populates these entries with default values
> when the device is bound to the driver. The pci-epf-test driver populates
> -vendorid with 0xffff and interrupt_pin with 0x0001
> +vendorid with 0xffff and interrupt_pin with 0x0001::
>
> # cat functions/pci_epf_test/func1/vendorid
> 0xffff
> # cat functions/pci_epf_test/func1/interrupt_pin
> 0x0001
>
> -1.4 Configuring pci-epf-test Device
> +
> +Configuring pci-epf-test Device
> +-------------------------------
>
> The user can configure the pci-epf-test device using configfs entry. In order
> to change the vendorid and the number of MSI interrupts used by the function
> -device, the following commands can be used.
> +device, the following commands can be used::
>
> # echo 0x104c > functions/pci_epf_test/func1/vendorid
> # echo 0xb500 > functions/pci_epf_test/func1/deviceid
> # echo 16 > functions/pci_epf_test/func1/msi_interrupts
> # echo 8 > functions/pci_epf_test/func1/msix_interrupts
>
> -1.5 Binding pci-epf-test Device to EP Controller
> +
> +Binding pci-epf-test Device to EP Controller
> +--------------------------------------------
>
> In order for the endpoint function device to be useful, it has to be bound to
> a PCI endpoint controller driver. Use the configfs to bind the function
> -device to one of the controller driver present in the system.
> +device to one of the controller driver present in the system::
>
> # ln -s functions/pci_epf_test/func1 controllers/51000000.pcie_ep/
>
> Once the above step is completed, the PCI endpoint is ready to establish a link
> with the host.
>
> -1.6 Start the Link
> +
> +Start the Link
> +--------------
>
> In order for the endpoint device to establish a link with the host, the _start_
> -field should be populated with '1'.
> +field should be populated with '1'::
>
> # echo 1 > controllers/51000000.pcie_ep/start
>
> -2. RootComplex Device
>
> -2.1 lspci Output
> +RootComplex Device
> +==================
> +
> +lspci Output
> +------------
>
> -Note that the devices listed here correspond to the value populated in 1.4 above
> +Note that the devices listed here correspond to the value populated in 1.4
> +above::
>
> 00:00.0 PCI bridge: Texas Instruments Device 8888 (rev 01)
> 01:00.0 Unassigned class [ff00]: Texas Instruments Device b500
>
> -2.2 Using Endpoint Test function Device
> +
> +Using Endpoint Test function Device
> +-----------------------------------
>
> pcitest.sh added in tools/pci/ can be used to run all the default PCI endpoint
> -tests. To compile this tool the following commands should be used:
> +tests. To compile this tool the following commands should be used::
>
> # cd <kernel-dir>
> # make -C tools/pci
>
> -or if you desire to compile and install in your system:
> +or if you desire to compile and install in your system::
>
> # cd <kernel-dir>
> # make -C tools/pci install
>
> The tool and script will be located in <rootfs>/usr/bin/
>
> -2.2.1 pcitest.sh Output
> +
> +pcitest.sh Output
> +~~~~~~~~~~~~~~~~~
> +::
> +
> # pcitest.sh
> BAR tests
>

Thanks,
Mauro