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, 174 insertions, 0 deletions

diff --git a/kernel/drivers/net/irda/irda-usb.h b/kernel/drivers/net/irda/irda-usb.h
new file mode 100644
index 000000000..8ac389fa9
--- /dev/null
+++ b/kernel/drivers/net/irda/irda-usb.h
@@ -0,0 +1,174 @@
+/*****************************************************************************
+ *
+ * Filename:      irda-usb.h
+ * Version:       0.10
+ * Description:   IrDA-USB Driver
+ * Status:        Experimental 
+ * Author:        Dag Brattli <dag@brattli.net>
+ *
+ *	Copyright (C) 2001, Roman Weissgaerber <weissg@vienna.at>
+ *      Copyright (C) 2000, Dag Brattli <dag@brattli.net>
+ *      Copyright (C) 2001, Jean Tourrilhes <jt@hpl.hp.com>
+ *      Copyright (C) 2004, SigmaTel, Inc. <irquality@sigmatel.com>
+ *      Copyright (C) 2005, Milan Beno <beno@pobox.sk>
+ *      Copyright (C) 2006, Nick FEdchik <nick@fedchik.org.ua>
+ *          
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ *	This program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program; if not, write to the Free Software
+ *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *****************************************************************************/
+
+#include <linux/ktime.h>
+
+#include <net/irda/irda.h>
+#include <net/irda/irda_device.h>      /* struct irlap_cb */
+
+#define RX_COPY_THRESHOLD 200
+#define IRDA_USB_MAX_MTU 2051
+#define IRDA_USB_SPEED_MTU 64		/* Weird, but work like this */
+
+/* Maximum number of active URB on the Rx path
+ * This is the amount of buffers the we keep between the USB harware and the
+ * IrDA stack.
+ *
+ * Note : the network layer does also queue the packets between us and the
+ * IrDA stack, and is actually pretty fast and efficient in doing that.
+ * Therefore, we don't need to have a large number of URBs, and we can
+ * perfectly live happy with only one. We certainly don't need to keep the
+ * full IrTTP window around here...
+ * I repeat for those who have trouble to understand : 1 URB is plenty
+ * good enough to handle back-to-back (brickwalled) frames. I tried it,
+ * it works (it's the hardware that has trouble doing it).
+ *
+ * Having 2 URBs would allow the USB stack to process one URB while we take
+ * care of the other and then swap the URBs...
+ * On the other hand, increasing the number of URB will have penalities
+ * in term of latency and will interact with the link management in IrLAP...
+ * Jean II */
+#define IU_MAX_ACTIVE_RX_URBS	1	/* Don't touch !!! */
+
+/* When a Rx URB is passed back to us, we can't reuse it immediately,
+ * because it may still be referenced by the USB layer. Therefore we
+ * need to keep one extra URB in the Rx path.
+ * Jean II */
+#define IU_MAX_RX_URBS	(IU_MAX_ACTIVE_RX_URBS + 1)
+
+/* Various ugly stuff to try to workaround generic problems */
+/* Send speed command in case of timeout, just for trying to get things sane */
+#define IU_BUG_KICK_TIMEOUT
+/* Show the USB class descriptor */
+#undef IU_DUMP_CLASS_DESC 
+/* Assume a minimum round trip latency for USB transfer (in us)...
+ * USB transfer are done in the next USB slot if there is no traffic
+ * (1/19 msec) and is done at 12 Mb/s :
+ * Waiting for slot + tx = (53us + 16us) * 2 = 137us minimum.
+ * Rx notification will only be done at the end of the USB frame period :
+ * OHCI : frame period = 1ms
+ * UHCI : frame period = 1ms, but notification can take 2 or 3 ms :-(
+ * EHCI : frame period = 125us */
+#define IU_USB_MIN_RTT		500	/* This should be safe in most cases */
+
+/* Inbound header */
+#define MEDIA_BUSY    0x80
+
+#define SPEED_2400     0x01
+#define SPEED_9600     0x02
+#define SPEED_19200    0x03
+#define SPEED_38400    0x04
+#define SPEED_57600    0x05
+#define SPEED_115200   0x06
+#define SPEED_576000   0x07
+#define SPEED_1152000  0x08
+#define SPEED_4000000  0x09
+#define SPEED_16000000 0x0a
+
+/* Basic capabilities */
+#define IUC_DEFAULT	0x00	/* Basic device compliant with 1.0 spec */
+/* Main bugs */
+#define IUC_SPEED_BUG	0x01	/* Device doesn't set speed after the frame */
+#define IUC_NO_WINDOW	0x02	/* Device doesn't behave with big Rx window */
+#define IUC_NO_TURN	0x04	/* Device doesn't do turnaround by itself */
+/* Not currently used */
+#define IUC_SIR_ONLY	0x08	/* Device doesn't behave at FIR speeds */
+#define IUC_SMALL_PKT	0x10	/* Device doesn't behave with big Rx packets */
+#define IUC_MAX_WINDOW	0x20	/* Device underestimate the Rx window */
+#define IUC_MAX_XBOFS	0x40	/* Device need more xbofs than advertised */
+#define IUC_STIR421X	0x80	/* SigmaTel 4210/4220/4116 VFIR */
+
+/* USB class definitions */
+#define USB_IRDA_HEADER            0x01
+#define USB_CLASS_IRDA             0x02 /* USB_CLASS_APP_SPEC subclass */
+#define USB_DT_IRDA                0x21
+#define USB_IRDA_STIR421X_HEADER   0x03
+#define IU_SIGMATEL_MAX_RX_URBS    (IU_MAX_ACTIVE_RX_URBS + \
+                                    USB_IRDA_STIR421X_HEADER)
+
+struct irda_class_desc {
+	__u8  bLength;
+	__u8  bDescriptorType;
+	__le16 bcdSpecRevision;
+	__u8  bmDataSize;
+	__u8  bmWindowSize;
+	__u8  bmMinTurnaroundTime;
+	__le16 wBaudRate;
+	__u8  bmAdditionalBOFs;
+	__u8  bIrdaRateSniff;
+	__u8  bMaxUnicastList;
+} __packed;
+
+/* class specific interface request to get the IrDA-USB class descriptor
+ * (6.2.5, USB-IrDA class spec 1.0) */
+
+#define IU_REQ_GET_CLASS_DESC	0x06
+#define STIR421X_MAX_PATCH_DOWNLOAD_SIZE 1023
+
+struct irda_usb_cb {
+	struct irda_class_desc *irda_desc;
+	struct usb_device *usbdev;	/* init: probe_irda */
+	struct usb_interface *usbintf;	/* init: probe_irda */
+	int netopen;			/* Device is active for network */
+	int present;			/* Device is present on the bus */
+	__u32 capability;		/* Capability of the hardware */
+	__u8  bulk_in_ep;		/* Rx Endpoint assignments */
+	__u8  bulk_out_ep;		/* Tx Endpoint assignments */
+	__u16 bulk_out_mtu;		/* Max Tx packet size in bytes */
+	__u8  bulk_int_ep;		/* Interrupt Endpoint assignments */
+
+	__u8  max_rx_urb;
+	struct urb **rx_urb;	        /* URBs used to receive data frames */
+	struct urb *idle_rx_urb;	/* Pointer to idle URB in Rx path */
+	struct urb *tx_urb;		/* URB used to send data frames */
+	struct urb *speed_urb;		/* URB used to send speed commands */
+	
+	struct net_device *netdev;	/* Yes! we are some kind of netdev. */
+	struct irlap_cb   *irlap;	/* The link layer we are binded to */
+	struct qos_info qos;
+	char *speed_buff;		/* Buffer for speed changes */
+	char *tx_buff;
+
+	ktime_t stamp;
+
+	spinlock_t lock;		/* For serializing Tx operations */
+
+	__u16 xbofs;			/* Current xbofs setting */
+	__s16 new_xbofs;		/* xbofs we need to set */
+	__u32 speed;			/* Current speed */
+	__s32 new_speed;		/* speed we need to set */
+
+	__u8 header_length;             /* USB-IrDA frame header size */
+	int needspatch;        		/* device needs firmware patch */
+
+	struct timer_list rx_defer_timer;	/* Wait for Rx error to clear */
+};
+