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docs: ABI: Add sysfs documentation interface of dw-xdata-pcie driver

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

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Link: https://lore.kernel.org/r/438c4ca9f6cc9e1cb29a65c0d2cca9a3d3f181b1.1617016509.git.gustavo.pimentel@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gustavo Pimentel
2021-03-29 13:17:48 +02:00
committed by Greg Kroah-Hartman
parent 49917294ab
commit 177260a705
1 changed files with 49 additions and 0 deletions
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Documentation/ABI/testing/sysfs-driver-xdata Normal file
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What: /sys/class/misc/drivers/dw-xdata-pcie.<device>/write
Date: April 2021
KernelVersion: 5.13
Contact: Gustavo Pimentel <gustavo.pimentel@synopsys.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 or to disable the PCIe traffic generator
in all directions.
Write y/1/on to enable, n/0/off to disable
Usage e.g.
echo 1 > /sys/class/misc/dw-xdata-pcie.<device>/write
or
echo 0 > /sys/class/misc/dw-xdata-pcie.<device>/write
The user can read the current PCIe link throughput generated
through this generator in MB/s.
Usage e.g.
cat /sys/class/misc/dw-xdata-pcie.<device>/write
204
The file is read and write.
What: /sys/class/misc/dw-xdata-pcie.<device>/read
Date: April 2021
KernelVersion: 5.13
Contact: Gustavo Pimentel <gustavo.pimentel@synopsys.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 or to disable the PCIe traffic generator
in all directions.
Write y/1/on to enable, n/0/off to disable
Usage e.g.
echo 1 > /sys/class/misc/dw-xdata-pcie.<device>/read
or
echo 0 > /sys/class/misc/dw-xdata-pcie.<device>/read
The user can read the current PCIe link throughput generated
through this generator in MB/s.
Usage e.g.
cat /sys/class/misc/dw-xdata-pcie.<device>/read
199
The file is read and write.