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, 267 insertions, 0 deletions

diff --git a/kernel/drivers/isdn/hisax/sportster.c b/kernel/drivers/isdn/hisax/sportster.c
new file mode 100644
index 000000000..18cee6360
--- /dev/null
+++ b/kernel/drivers/isdn/hisax/sportster.c
@@ -0,0 +1,267 @@
+/* $Id: sportster.c,v 1.16.2.4 2004/01/13 23:48:39 keil Exp $
+ *
+ * low level stuff for USR Sportster internal TA
+ *
+ * Author       Karsten Keil
+ * Copyright    by Karsten Keil      <keil@isdn4linux.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to Christian "naddy" Weisgerber (3Com, US Robotics) for documentation
+ *
+ *
+ */
+#include <linux/init.h>
+#include "hisax.h"
+#include "isac.h"
+#include "hscx.h"
+#include "isdnl1.h"
+
+static const char *sportster_revision = "$Revision: 1.16.2.4 $";
+
+#define byteout(addr, val) outb(val, addr)
+#define bytein(addr) inb(addr)
+
+#define	 SPORTSTER_ISAC		0xC000
+#define	 SPORTSTER_HSCXA	0x0000
+#define	 SPORTSTER_HSCXB	0x4000
+#define	 SPORTSTER_RES_IRQ	0x8000
+#define	 SPORTSTER_RESET	0x80
+#define	 SPORTSTER_INTE		0x40
+
+static inline int
+calc_off(unsigned int base, unsigned int off)
+{
+	return (base + ((off & 0xfc) << 8) + ((off & 3) << 1));
+}
+
+static inline void
+read_fifo(unsigned int adr, u_char *data, int size)
+{
+	insb(adr, data, size);
+}
+
+static void
+write_fifo(unsigned int adr, u_char *data, int size)
+{
+	outsb(adr, data, size);
+}
+
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+	return (bytein(calc_off(cs->hw.spt.isac, offset)));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	byteout(calc_off(cs->hw.spt.isac, offset), value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	read_fifo(cs->hw.spt.isac, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	write_fifo(cs->hw.spt.isac, data, size);
+}
+
+static u_char
+ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
+{
+	return (bytein(calc_off(cs->hw.spt.hscx[hscx], offset)));
+}
+
+static void
+WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
+{
+	byteout(calc_off(cs->hw.spt.hscx[hscx], offset), value);
+}
+
+/*
+ * fast interrupt HSCX stuff goes here
+ */
+
+#define READHSCX(cs, nr, reg) bytein(calc_off(cs->hw.spt.hscx[nr], reg))
+#define WRITEHSCX(cs, nr, reg, data) byteout(calc_off(cs->hw.spt.hscx[nr], reg), data)
+#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
+#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
+
+#include "hscx_irq.c"
+
+static irqreturn_t
+sportster_interrupt(int intno, void *dev_id)
+{
+	struct IsdnCardState *cs = dev_id;
+	u_char val;
+	u_long flags;
+
+	spin_lock_irqsave(&cs->lock, flags);
+	val = READHSCX(cs, 1, HSCX_ISTA);
+Start_HSCX:
+	if (val)
+		hscx_int_main(cs, val);
+	val = ReadISAC(cs, ISAC_ISTA);
+Start_ISAC:
+	if (val)
+		isac_interrupt(cs, val);
+	val = READHSCX(cs, 1, HSCX_ISTA);
+	if (val) {
+		if (cs->debug & L1_DEB_HSCX)
+			debugl1(cs, "HSCX IntStat after IntRoutine");
+		goto Start_HSCX;
+	}
+	val = ReadISAC(cs, ISAC_ISTA);
+	if (val) {
+		if (cs->debug & L1_DEB_ISAC)
+			debugl1(cs, "ISAC IntStat after IntRoutine");
+		goto Start_ISAC;
+	}
+	/* get a new irq impulse if there any pending */
+	bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ + 1);
+	spin_unlock_irqrestore(&cs->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static void
+release_io_sportster(struct IsdnCardState *cs)
+{
+	int i, adr;
+
+	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0);
+	for (i = 0; i < 64; i++) {
+		adr = cs->hw.spt.cfg_reg + i * 1024;
+		release_region(adr, 8);
+	}
+}
+
+static void
+reset_sportster(struct IsdnCardState *cs)
+{
+	cs->hw.spt.res_irq |= SPORTSTER_RESET; /* Reset On */
+	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
+	mdelay(10);
+	cs->hw.spt.res_irq &= ~SPORTSTER_RESET; /* Reset Off */
+	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
+	mdelay(10);
+}
+
+static int
+Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	u_long flags;
+
+	switch (mt) {
+	case CARD_RESET:
+		spin_lock_irqsave(&cs->lock, flags);
+		reset_sportster(cs);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return (0);
+	case CARD_RELEASE:
+		release_io_sportster(cs);
+		return (0);
+	case CARD_INIT:
+		spin_lock_irqsave(&cs->lock, flags);
+		reset_sportster(cs);
+		inithscxisac(cs, 1);
+		cs->hw.spt.res_irq |= SPORTSTER_INTE; /* IRQ On */
+		byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
+		inithscxisac(cs, 2);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return (0);
+	case CARD_TEST:
+		return (0);
+	}
+	return (0);
+}
+
+static int get_io_range(struct IsdnCardState *cs)
+{
+	int i, j, adr;
+
+	for (i = 0; i < 64; i++) {
+		adr = cs->hw.spt.cfg_reg + i * 1024;
+		if (!request_region(adr, 8, "sportster")) {
+			printk(KERN_WARNING "HiSax: USR Sportster config port "
+			       "%x-%x already in use\n",
+			       adr, adr + 8);
+			break;
+		}
+	}
+	if (i == 64)
+		return (1);
+	else {
+		for (j = 0; j < i; j++) {
+			adr = cs->hw.spt.cfg_reg + j * 1024;
+			release_region(adr, 8);
+		}
+		return (0);
+	}
+}
+
+int setup_sportster(struct IsdnCard *card)
+{
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+
+	strcpy(tmp, sportster_revision);
+	printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n", HiSax_getrev(tmp));
+	if (cs->typ != ISDN_CTYPE_SPORTSTER)
+		return (0);
+
+	cs->hw.spt.cfg_reg = card->para[1];
+	cs->irq = card->para[0];
+	if (!get_io_range(cs))
+		return (0);
+	cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC;
+	cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA;
+	cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB;
+
+	switch (cs->irq) {
+	case 5:	cs->hw.spt.res_irq = 1;
+		break;
+	case 7:	cs->hw.spt.res_irq = 2;
+		break;
+	case 10:cs->hw.spt.res_irq = 3;
+		break;
+	case 11:cs->hw.spt.res_irq = 4;
+		break;
+	case 12:cs->hw.spt.res_irq = 5;
+		break;
+	case 14:cs->hw.spt.res_irq = 6;
+		break;
+	case 15:cs->hw.spt.res_irq = 7;
+		break;
+	default:release_io_sportster(cs);
+		printk(KERN_WARNING "Sportster: wrong IRQ\n");
+		return (0);
+	}
+	printk(KERN_INFO "HiSax: USR Sportster config irq:%d cfg:0x%X\n",
+	       cs->irq, cs->hw.spt.cfg_reg);
+	setup_isac(cs);
+	cs->readisac = &ReadISAC;
+	cs->writeisac = &WriteISAC;
+	cs->readisacfifo = &ReadISACfifo;
+	cs->writeisacfifo = &WriteISACfifo;
+	cs->BC_Read_Reg = &ReadHSCX;
+	cs->BC_Write_Reg = &WriteHSCX;
+	cs->BC_Send_Data = &hscx_fill_fifo;
+	cs->cardmsg = &Sportster_card_msg;
+	cs->irq_func = &sportster_interrupt;
+	ISACVersion(cs, "Sportster:");
+	if (HscxVersion(cs, "Sportster:")) {
+		printk(KERN_WARNING
+		       "Sportster: wrong HSCX versions check IO address\n");
+		release_io_sportster(cs);
+		return (0);
+	}
+	return (1);
+}