[PATCH 0/5] misc: Add Add Synopsys DesignWare xData IP driver

[PATCH 0/5] misc: Add Add Synopsys DesignWare xData IP driver

[Gustavo Pimentel]

This patch series adds a new driver called xData-pcie for the Synopsys
DesignWare PCIe prototype.

The driver configures and enables the Synopsys DesignWare PCIe traffic
generator IP inside of prototype Endpoint which will generate upstream
and downstream PCIe traffic. This allows to quickly test the PCIe link
throughput speed and check is the prototype solution has some limitation
or not.

Cc: Derek Kiernan <derek.kiernan@xilinx.com>
Cc: Dragan Cvetic <dragan.cvetic@xilinx.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-pci@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

Gustavo Pimentel (5):
  misc: Add Synopsys DesignWare xData IP driver
  misc: Add Synopsys DesignWare xData IP driver to Makefile
  misc: Add Synopsys DesignWare xData IP driver to Kconfig
  Documentation: misc-devices: Add Documentation for dw-xdata-pcie
    driver
  MAINTAINERS: Add Synopsys xData IP driver maintainer

 Documentation/misc-devices/dw-xdata-pcie.rst |  43 +++
 MAINTAINERS                                  |   7 +
 drivers/misc/Kconfig                         |  10 +
 drivers/misc/Makefile                        |   1 +
 drivers/misc/dw-xdata-pcie.c                 | 395 +++++++++++++++++++++++++++
 5 files changed, 456 insertions(+)
 create mode 100644 Documentation/misc-devices/dw-xdata-pcie.rst
 create mode 100644 drivers/misc/dw-xdata-pcie.c

-- 
2.7.4

[PATCH 4/5] Documentation: misc-devices: Add Documentation for dw-xdata-pcie driver

[Gustavo Pimentel]

Add Documentation for dw-xdata-pcie driver.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
---
 Documentation/misc-devices/dw-xdata-pcie.rst | 43 ++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Documentation/misc-devices/dw-xdata-pcie.rst

diff --git a/Documentation/misc-devices/dw-xdata-pcie.rst b/Documentation/misc-devices/dw-xdata-pcie.rst
new file mode 100644
index 00000000..4d4616e
--- /dev/null
+++ b/Documentation/misc-devices/dw-xdata-pcie.rst
@@ -0,0 +1,43 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+===========================================================================w
+Driver for Synopsys DesignWare PCIe traffic generator (also known as xData)
+===========================================================================
+
+This driver should be used as a host-side (Root Complex) driver and Synopsys
+DesignWare prototype that includes this IP.
+
+The "dw-xdata-pcie" driver can be used to enable/disable PCIe traffic
+generator in either direction (mutual exclusion) besides allowing the
+PCIe link performance analysis.
+
+The interaction with this driver is done through the module parameter and
+can be changed in runtime. The driver outputs the requested command state
+information to /var/log/kern.log or dmesg.
+
+Request write TLPs traffic generation - Root Complex to Endpoint direction
+- Command:
+	echo w > /sys/module/dw_xdata_pcie/parameters/command
+- Output example:
+	dw-xdata-pcie 0000:01.0: xData: requested write transfer
+	dw-xdata-pcie 0000:01.0: xData: started write direction
+
+Request read TLPs traffic generation - Endpoint to Root Complex direction:
+- Command:
+	echo r > /sys/module/dw_xdata_pcie/parameters/command
+- Output example:
+	dw-xdata-pcie 0000:01.0: xData: requested read transfer
+	dw-xdata-pcie 0000:01.0: xData: started read direction
+
+Request to stop any current TLP transfer:
+- Command:
+	echo s > /sys/module/dw_xdata_pcie/parameters/command
+- Output example:
+	dw-xdata-pcie 0000:01.0: xData: requested stop any transfer
+
+Request PCIe link performance analysis:
+- Command:
+	echo p > /sys/module/dw_xdata_pcie/parameters/command
+   - Output example:
+	dw-xdata-pcie 0000:01.0: xData: requested performance analysis
+	dw-xdata-pcie 0000:01.0: xData: time=112000000us, read=0 MB/s, write=0 MB/s
-- 
2.7.4

[PATCH 5/5] MAINTAINERS: Add Synopsys xData IP driver maintainer

[Gustavo Pimentel]

Add Synopsys xData IP driver maintainer.

This driver aims to support Synopsys xData IP and is normally distributed
along with Synopsys PCIe EndPoint IP as a PCIe traffic generator (depends
of the use and licensing agreement).

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
---
 Documentation/misc-devices/dw-xdata-pcie.rst | 4 ++--
 MAINTAINERS                                  | 7 +++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/misc-devices/dw-xdata-pcie.rst b/Documentation/misc-devices/dw-xdata-pcie.rst
index 4d4616e..3d2981d 100644
--- a/Documentation/misc-devices/dw-xdata-pcie.rst
+++ b/Documentation/misc-devices/dw-xdata-pcie.rst
@@ -1,6 +1,6 @@
 .. SPDX-License-Identifier: GPL-2.0
 
-===========================================================================w
+===========================================================================
 Driver for Synopsys DesignWare PCIe traffic generator (also known as xData)
 ===========================================================================
 
@@ -40,4 +40,4 @@ Request PCIe link performance analysis:
 	echo p > /sys/module/dw_xdata_pcie/parameters/command
    - Output example:
 	dw-xdata-pcie 0000:01.0: xData: requested performance analysis
-	dw-xdata-pcie 0000:01.0: xData: time=112000000us, read=0 MB/s, write=0 MB/s
+	dw-xdata-pcie 0000:01.0: xData: time=100000000 us, write=0 MB/s, read=0 MB/s
diff --git a/MAINTAINERS b/MAINTAINERS
index 8671573..8856f6b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4983,6 +4983,13 @@ S:	Maintained
 F:	drivers/dma/dw-edma/
 F:	include/linux/dma/edma.h
 
+DESIGNWARE XDATA IP DRIVER
+M:	Gustavo Pimentel <gustavo.pimentel@synopsys.com>
+L:	linux-pci@vger.kernel.org
+S:	Maintained
+F:	Documentation/misc-devices/dw-xdata-pcie.rst
+F:	drivers/misc/dw-xdata-pcie.c
+
 DESIGNWARE USB2 DRD IP DRIVER
 M:	Minas Harutyunyan <hminas@synopsys.com>
 L:	linux-usb@vger.kernel.org
-- 
2.7.4