Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 158 insertions, 0 deletions

diff --git a/kernel/Documentation/networking/iphase.txt b/kernel/Documentation/networking/iphase.txt
new file mode 100644
index 000000000..670b72f16
--- /dev/null
+++ b/kernel/Documentation/networking/iphase.txt
@@ -0,0 +1,158 @@
+
+                              READ ME FISRT
+		  ATM (i)Chip IA Linux Driver Source
+--------------------------------------------------------------------------------
+                     Read This Before You Begin!
+--------------------------------------------------------------------------------
+
+Description
+-----------
+
+This is the README file for the Interphase PCI ATM (i)Chip IA Linux driver 
+source release.
+
+The features and limitations of this driver are as follows:
+    - A single VPI (VPI value of 0) is supported.
+    - Supports 4K VCs for the server board (with 512K control memory) and 1K 
+      VCs for the client board (with 128K control memory).
+    - UBR, ABR and CBR service categories are supported.
+    - Only AAL5 is supported. 
+    - Supports setting of PCR on the VCs. 
+    - Multiple adapters in a system are supported.
+    - All variants of Interphase ATM PCI (i)Chip adapter cards are supported, 
+      including x575 (OC3, control memory 128K , 512K and packet memory 128K, 
+      512K and 1M), x525 (UTP25) and x531 (DS3 and E3). See 
+      http://www.iphase.com/
+      for details.
+    - Only x86 platforms are supported.
+    - SMP is supported.
+
+
+Before You Start
+---------------- 
+
+
+Installation
+------------
+
+1. Installing the adapters in the system
+   To install the ATM adapters in the system, follow the steps below.
+       a. Login as root.
+       b. Shut down the system and power off the system.
+       c. Install one or more ATM adapters in the system.
+       d. Connect each adapter to a port on an ATM switch. The green 'Link' 
+          LED on the front panel of the adapter will be on if the adapter is 
+          connected to the switch properly when the system is powered up.
+       e. Power on and boot the system.
+
+2. [ Removed ]
+
+3. Rebuild kernel with ABR support
+   [ a. and b. removed ]
+    c. Reconfigure the kernel, choose the Interphase ia driver through "make 
+       menuconfig" or "make xconfig".
+    d. Rebuild the kernel, loadable modules and the atm tools. 
+    e. Install the new built kernel and modules and reboot.
+
+4. Load the adapter hardware driver (ia driver) if it is built as a module
+       a. Login as root.
+       b. Change directory to /lib/modules/<kernel-version>/atm.
+       c. Run "insmod suni.o;insmod iphase.o"
+	  The yellow 'status' LED on the front panel of the adapter will blink 
+          while the driver is loaded in the system.
+       d. To verify that the 'ia' driver is loaded successfully, run the 
+          following command:
+
+              cat /proc/atm/devices
+
+          If the driver is loaded successfully, the output of the command will 
+          be similar to the following lines:
+
+              Itf Type    ESI/"MAC"addr AAL(TX,err,RX,err,drop) ...
+              0   ia      xxxxxxxxx  0 ( 0 0 0 0 0 )  5 ( 0 0 0 0 0 )
+
+          You can also check the system log file /var/log/messages for messages
+          related to the ATM driver.
+
+5. Ia Driver Configuration 
+
+5.1 Configuration of adapter buffers
+    The (i)Chip boards have 3 different packet RAM size variants: 128K, 512K and
+    1M. The RAM size decides the number of buffers and buffer size. The default 
+    size and number of buffers are set as following: 
+
+          Total    Rx RAM   Tx RAM   Rx Buf   Tx Buf   Rx buf   Tx buf
+         RAM size   size     size     size     size      cnt      cnt
+         --------  ------   ------   ------   ------   ------   ------
+           128K      64K      64K      10K      10K       6        6
+           512K     256K     256K      10K      10K      25       25
+             1M     512K     512K      10K      10K      51       51
+
+       These setting should work well in most environments, but can be
+       changed by typing the following command: 
+ 
+           insmod <IA_DIR>/ia.o IA_RX_BUF=<RX_CNT> IA_RX_BUF_SZ=<RX_SIZE> \
+                   IA_TX_BUF=<TX_CNT> IA_TX_BUF_SZ=<TX_SIZE> 
+       Where:
+            RX_CNT = number of receive buffers in the range (1-128)
+            RX_SIZE = size of receive buffers in the range (48-64K)
+            TX_CNT = number of transmit buffers in the range (1-128)
+            TX_SIZE = size of transmit buffers in the range (48-64K)
+
+            1. Transmit and receive buffer size must be a multiple of 4.
+            2. Care should be taken so that the memory required for the
+               transmit and receive buffers is less than or equal to the
+               total adapter packet memory.   
+
+5.2 Turn on ia debug trace
+
+    When the ia driver is built with the CONFIG_ATM_IA_DEBUG flag, the driver 
+    can provide more debug trace if needed. There is a bit mask variable, 
+    IADebugFlag, which controls the output of the traces. You can find the bit 
+    map of the IADebugFlag in iphase.h. 
+    The debug trace can be turn on through the insmod command line option, for 
+    example, "insmod iphase.o IADebugFlag=0xffffffff" can turn on all the debug 
+    traces together with loading the driver.
+
+6. Ia Driver Test Using ttcp_atm and PVC
+
+   For the PVC setup, the test machines can either be connected back-to-back or 
+   through a switch. If connected through the switch, the switch must be 
+   configured for the PVC(s).
+
+   a. For UBR test:
+      At the test machine intended to receive data, type:
+         ttcp_atm -r -a -s 0.100 
+      At the other test machine, type:
+         ttcp_atm -t -a -s 0.100 -n 10000
+      Run "ttcp_atm -h" to display more options of the ttcp_atm tool.
+   b. For ABR test:
+      It is the same as the UBR testing, but with an extra command option:
+         -Pabr:max_pcr=<xxx>
+         where:
+             xxx = the maximum peak cell rate, from 170 - 353207.
+         This option must be set on both the machines.
+   c. For CBR test:
+      It is the same as the UBR testing, but with an extra command option:
+         -Pcbr:max_pcr=<xxx>
+         where:
+             xxx = the maximum peak cell rate, from 170 - 353207.
+         This option may only be set on the transmit machine.
+
+
+OUTSTANDING ISSUES
+------------------
+
+
+
+Contact Information
+-------------------
+
+     Customer Support:
+         United States:	Telephone:	(214) 654-5555
+     			Fax:		(214) 654-5500
+			E-Mail:		intouch@iphase.com
+	 Europe:	Telephone:	33 (0)1 41 15 44 00
+			Fax:		33 (0)1 41 15 12 13
+     World Wide Web:	http://www.iphase.com
+     Anonymous FTP:	ftp.iphase.com