Documentation: PCI: convert endpoint/pci-test-howto.txt to reST

Convert 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>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

Documentation/PCI/endpoint/index.rst

@@ -10,3 +10,4 @@ PCI Endpoint Framework
    pci-endpoint
    pci-endpoint-cfs
    pci-test-function
+   pci-test-howto

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
+==================
 
-Note that the devices listed here correspond to the value populated in 1.4 above
+lspci Output
+------------
+
+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