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, 345 insertions, 0 deletions

diff --git a/kernel/drivers/isdn/pcbit/callbacks.c b/kernel/drivers/isdn/pcbit/callbacks.c
new file mode 100644
index 000000000..efb6d6a36
--- /dev/null
+++ b/kernel/drivers/isdn/pcbit/callbacks.c
@@ -0,0 +1,345 @@
+/*
+ * Callbacks for the FSM
+ *
+ * Copyright (C) 1996 Universidade de Lisboa
+ *
+ * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License, incorporated herein by reference.
+ */
+
+/*
+ * Fix: 19981230 - Carlos Morgado <chbm@techie.com>
+ * Port of Nelson Escravana's <nelson.escravana@usa.net> fix to CalledPN
+ * NULL pointer dereference in cb_in_1 (originally fixed in 2.0)
+ */
+
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/skbuff.h>
+
+#include <asm/io.h>
+
+#include <linux/isdnif.h>
+
+#include "pcbit.h"
+#include "layer2.h"
+#include "edss1.h"
+#include "callbacks.h"
+#include "capi.h"
+
+ushort last_ref_num = 1;
+
+/*
+ *  send_conn_req
+ *
+ */
+
+void cb_out_1(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	      struct callb_data *cbdata)
+{
+	struct sk_buff *skb;
+	int len;
+	ushort refnum;
+
+
+#ifdef DEBUG
+	printk(KERN_DEBUG "Called Party Number: %s\n",
+	       cbdata->data.setup.CalledPN);
+#endif
+	/*
+	 * hdr - kmalloc in capi_conn_req
+	 *     - kfree   when msg has been sent
+	 */
+
+	if ((len = capi_conn_req(cbdata->data.setup.CalledPN, &skb,
+				 chan->proto)) < 0)
+	{
+		printk("capi_conn_req failed\n");
+		return;
+	}
+
+
+	refnum = last_ref_num++ & 0x7fffU;
+
+	chan->callref = 0;
+	chan->layer2link = 0;
+	chan->snum = 0;
+	chan->s_refnum = refnum;
+
+	pcbit_l2_write(dev, MSG_CONN_REQ, refnum, skb, len);
+}
+
+/*
+ *  rcv CONNECT
+ *  will go into ACTIVE state
+ *  send CONN_ACTIVE_RESP
+ *  send Select protocol request
+ */
+
+void cb_out_2(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	      struct callb_data *data)
+{
+	isdn_ctrl ictl;
+	struct sk_buff *skb;
+	int len;
+	ushort refnum;
+
+	if ((len = capi_conn_active_resp(chan, &skb)) < 0)
+	{
+		printk("capi_conn_active_req failed\n");
+		return;
+	}
+
+	refnum = last_ref_num++ & 0x7fffU;
+	chan->s_refnum = refnum;
+
+	pcbit_l2_write(dev, MSG_CONN_ACTV_RESP, refnum, skb, len);
+
+
+	ictl.command = ISDN_STAT_DCONN;
+	ictl.driver = dev->id;
+	ictl.arg = chan->id;
+	dev->dev_if->statcallb(&ictl);
+
+	/* ACTIVE D-channel */
+
+	/* Select protocol  */
+
+	if ((len = capi_select_proto_req(chan, &skb, 1 /*outgoing*/)) < 0) {
+		printk("capi_select_proto_req failed\n");
+		return;
+	}
+
+	refnum = last_ref_num++ & 0x7fffU;
+	chan->s_refnum = refnum;
+
+	pcbit_l2_write(dev, MSG_SELP_REQ, refnum, skb, len);
+}
+
+
+/*
+ * Incoming call received
+ * inform user
+ */
+
+void cb_in_1(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	     struct callb_data *cbdata)
+{
+	isdn_ctrl ictl;
+	unsigned short refnum;
+	struct sk_buff *skb;
+	int len;
+
+
+	ictl.command = ISDN_STAT_ICALL;
+	ictl.driver = dev->id;
+	ictl.arg = chan->id;
+
+	/*
+	 *  ictl.num >= strlen() + strlen() + 5
+	 */
+
+	if (cbdata->data.setup.CallingPN == NULL) {
+		printk(KERN_DEBUG "NULL CallingPN to phone; using 0\n");
+		strcpy(ictl.parm.setup.phone, "0");
+	}
+	else {
+		strcpy(ictl.parm.setup.phone, cbdata->data.setup.CallingPN);
+	}
+	if (cbdata->data.setup.CalledPN == NULL) {
+		printk(KERN_DEBUG "NULL CalledPN to eazmsn; using 0\n");
+		strcpy(ictl.parm.setup.eazmsn, "0");
+	}
+	else {
+		strcpy(ictl.parm.setup.eazmsn, cbdata->data.setup.CalledPN);
+	}
+	ictl.parm.setup.si1 = 7;
+	ictl.parm.setup.si2 = 0;
+	ictl.parm.setup.plan = 0;
+	ictl.parm.setup.screen = 0;
+
+#ifdef DEBUG
+	printk(KERN_DEBUG "statstr: %s\n", ictl.num);
+#endif
+
+	dev->dev_if->statcallb(&ictl);
+
+
+	if ((len = capi_conn_resp(chan, &skb)) < 0) {
+		printk(KERN_DEBUG "capi_conn_resp failed\n");
+		return;
+	}
+
+	refnum = last_ref_num++ & 0x7fffU;
+	chan->s_refnum = refnum;
+
+	pcbit_l2_write(dev, MSG_CONN_RESP, refnum, skb, len);
+}
+
+/*
+ * user has replied
+ * open the channel
+ * send CONNECT message CONNECT_ACTIVE_REQ in CAPI
+ */
+
+void cb_in_2(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	     struct callb_data *data)
+{
+	unsigned short refnum;
+	struct sk_buff *skb;
+	int len;
+
+	if ((len = capi_conn_active_req(chan, &skb)) < 0) {
+		printk(KERN_DEBUG "capi_conn_active_req failed\n");
+		return;
+	}
+
+
+	refnum = last_ref_num++ & 0x7fffU;
+	chan->s_refnum = refnum;
+
+	printk(KERN_DEBUG "sending MSG_CONN_ACTV_REQ\n");
+	pcbit_l2_write(dev, MSG_CONN_ACTV_REQ, refnum, skb, len);
+}
+
+/*
+ * CONN_ACK arrived
+ * start b-proto selection
+ *
+ */
+
+void cb_in_3(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	     struct callb_data *data)
+{
+	unsigned short refnum;
+	struct sk_buff *skb;
+	int len;
+
+	if ((len = capi_select_proto_req(chan, &skb, 0 /*incoming*/)) < 0)
+	{
+		printk("capi_select_proto_req failed\n");
+		return;
+	}
+
+	refnum = last_ref_num++ & 0x7fffU;
+	chan->s_refnum = refnum;
+
+	pcbit_l2_write(dev, MSG_SELP_REQ, refnum, skb, len);
+
+}
+
+
+/*
+ * Received disconnect ind on active state
+ * send disconnect resp
+ * send msg to user
+ */
+void cb_disc_1(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	       struct callb_data *data)
+{
+	struct sk_buff *skb;
+	int len;
+	ushort refnum;
+	isdn_ctrl ictl;
+
+	if ((len = capi_disc_resp(chan, &skb)) < 0) {
+		printk("capi_disc_resp failed\n");
+		return;
+	}
+
+	refnum = last_ref_num++ & 0x7fffU;
+	chan->s_refnum = refnum;
+
+	pcbit_l2_write(dev, MSG_DISC_RESP, refnum, skb, len);
+
+	ictl.command = ISDN_STAT_BHUP;
+	ictl.driver = dev->id;
+	ictl.arg = chan->id;
+	dev->dev_if->statcallb(&ictl);
+}
+
+
+/*
+ *  User HANGUP on active/call proceeding state
+ *  send disc.req
+ */
+void cb_disc_2(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	       struct callb_data *data)
+{
+	struct sk_buff *skb;
+	int len;
+	ushort refnum;
+
+	if ((len = capi_disc_req(chan->callref, &skb, CAUSE_NORMAL)) < 0)
+	{
+		printk("capi_disc_req failed\n");
+		return;
+	}
+
+	refnum = last_ref_num++ & 0x7fffU;
+	chan->s_refnum = refnum;
+
+	pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb, len);
+}
+
+/*
+ *  Disc confirm received send BHUP
+ *  Problem: when the HL driver sends the disc req itself
+ *           LL receives BHUP
+ */
+void cb_disc_3(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	       struct callb_data *data)
+{
+	isdn_ctrl ictl;
+
+	ictl.command = ISDN_STAT_BHUP;
+	ictl.driver = dev->id;
+	ictl.arg = chan->id;
+	dev->dev_if->statcallb(&ictl);
+}
+
+void cb_notdone(struct pcbit_dev *dev, struct pcbit_chan *chan,
+		struct callb_data *data)
+{
+}
+
+/*
+ * send activate b-chan protocol
+ */
+void cb_selp_1(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	       struct callb_data *data)
+{
+	struct sk_buff *skb;
+	int len;
+	ushort refnum;
+
+	if ((len = capi_activate_transp_req(chan, &skb)) < 0)
+	{
+		printk("capi_conn_activate_transp_req failed\n");
+		return;
+	}
+
+	refnum = last_ref_num++ & 0x7fffU;
+	chan->s_refnum = refnum;
+
+	pcbit_l2_write(dev, MSG_ACT_TRANSP_REQ, refnum, skb, len);
+}
+
+/*
+ *  Inform User that the B-channel is available
+ */
+void cb_open(struct pcbit_dev *dev, struct pcbit_chan *chan,
+	     struct callb_data *data)
+{
+	isdn_ctrl ictl;
+
+	ictl.command = ISDN_STAT_BCONN;
+	ictl.driver = dev->id;
+	ictl.arg = chan->id;
+	dev->dev_if->statcallb(&ictl);
+}