linux-kernel - [PATCH v4 6/6] docs: ABI: Add sysfs documentation interface of dw-xdata-pcie driver

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Message-Id: <45f0701b523cda52b4b7f42351b63d5a0b6040b6.1612389746.git.gustavo.pimentel@synopsys.com>
Date:   Wed,  3 Feb 2021 23:03:30 +0100
From:   Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>
To:     linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        dmaengine@...r.kernel.org, Vinod Koul <vkoul@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>
Subject: [PATCH v4 6/6] docs: ABI: Add sysfs documentation interface of dw-xdata-pcie driver

This patch describes the sysfs interface implemented on the dw-xdata-pcie
driver.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@...opsys.com>
---
 Documentation/ABI/testing/sysfs-driver-xdata | 46 ++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-driver-xdata

diff --git a/Documentation/ABI/testing/sysfs-driver-xdata b/Documentation/ABI/testing/sysfs-driver-xdata
new file mode 100644
index 00000000..a7bb44b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-xdata
@@ -0,0 +1,46 @@
+What:		/sys/kernel/dw-xdata-pcie/write
+Date:		February 2021
+KernelVersion:	5.12
+Contact:	Gustavo Pimentel <gustavo.pimentel@...opsys.com>
+Description:	Allows the user to enable the PCIe traffic generator which
+		will create write TLPs frames - from the Root Complex to the
+		Endpoint direction.
+		Usage e.g.
+		 echo 1 > /sys/kernel/dw-xdata-pcie/write
+
+		The user can read the current PCIe link throughput generated
+		through this generator.
+		Usage e.g.
+		 cat /sys/kernel/dw-xdata-pcie/write
+		 204 MB/s
+
+		The file is read and write.
+
+What:		/sys/kernel/dw-xdata-pcie/read
+Date:		February 2021
+KernelVersion:	5.12
+Contact:	Gustavo Pimentel <gustavo.pimentel@...opsys.com>
+Description:	Allows the user to enable the PCIe traffic generator which
+		will create read TLPs frames - from the Endpoint to the Root
+		Complex direction.
+		Usage e.g.
+		 echo 1 > /sys/kernel/dw-xdata-pcie/read
+
+		The user can read the current PCIe link throughput generated
+		through this generator.
+		Usage e.g.
+		 cat /sys/kernel/dw-xdata-pcie/read
+		 199 MB/s
+
+		The file is read and write.
+
+What:		/sys/kernel/dw-xdata-pcie/stop
+Date:		February 2021
+KernelVersion:	5.12
+Contact:	Gustavo Pimentel <gustavo.pimentel@...opsys.com>
+Description:	Allows the user to disable the PCIe traffic generator in all
+		directions.
+		Usage e.g.
+		 echo 1 > /sys/kernel/dw-xdata-pcie/stop
+
+		The file is write only.
-- 
2.7.4