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, 297 insertions, 0 deletions

diff --git a/kernel/drivers/isdn/hisax/saphir.c b/kernel/drivers/isdn/hisax/saphir.c
new file mode 100644
index 000000000..6b2d0eccd
--- /dev/null
+++ b/kernel/drivers/isdn/hisax/saphir.c
@@ -0,0 +1,297 @@
+/* $Id: saphir.c,v 1.10.2.4 2004/01/13 23:48:39 keil Exp $
+ *
+ * low level stuff for HST Saphir 1
+ *
+ * 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    HST High Soft Tech GmbH
+ *
+ */
+
+#include <linux/init.h>
+#include "hisax.h"
+#include "isac.h"
+#include "hscx.h"
+#include "isdnl1.h"
+
+static char *saphir_rev = "$Revision: 1.10.2.4 $";
+
+#define byteout(addr, val) outb(val, addr)
+#define bytein(addr) inb(addr)
+
+#define ISAC_DATA	0
+#define HSCX_DATA	1
+#define ADDRESS_REG	2
+#define IRQ_REG		3
+#define SPARE_REG	4
+#define RESET_REG	5
+
+static inline u_char
+readreg(unsigned int ale, unsigned int adr, u_char off)
+{
+	register u_char ret;
+
+	byteout(ale, off);
+	ret = bytein(adr);
+	return (ret);
+}
+
+static inline void
+readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
+{
+	byteout(ale, off);
+	insb(adr, data, size);
+}
+
+
+static inline void
+writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
+{
+	byteout(ale, off);
+	byteout(adr, data);
+}
+
+static inline void
+writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
+{
+	byteout(ale, off);
+	outsb(adr, data, size);
+}
+
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+	return (readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset, value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
+}
+
+static u_char
+ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
+{
+	return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
+			offset + (hscx ? 0x40 : 0)));
+}
+
+static void
+WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
+{
+	writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
+		 offset + (hscx ? 0x40 : 0), value);
+}
+
+#define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale,		\
+				      cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
+#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale,	\
+					      cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
+
+#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale,	\
+						cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
+
+#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale,	\
+						  cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
+
+#include "hscx_irq.c"
+
+static irqreturn_t
+saphir_interrupt(int intno, void *dev_id)
+{
+	struct IsdnCardState *cs = dev_id;
+	u_char val;
+	u_long flags;
+
+	spin_lock_irqsave(&cs->lock, flags);
+	val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
+Start_HSCX:
+	if (val)
+		hscx_int_main(cs, val);
+	val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
+Start_ISAC:
+	if (val)
+		isac_interrupt(cs, val);
+	val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
+	if (val) {
+		if (cs->debug & L1_DEB_HSCX)
+			debugl1(cs, "HSCX IntStat after IntRoutine");
+		goto Start_HSCX;
+	}
+	val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
+	if (val) {
+		if (cs->debug & L1_DEB_ISAC)
+			debugl1(cs, "ISAC IntStat after IntRoutine");
+		goto Start_ISAC;
+	}
+	/* Watchdog */
+	if (cs->hw.saphir.timer.function)
+		mod_timer(&cs->hw.saphir.timer, jiffies + 1 * HZ);
+	else
+		printk(KERN_WARNING "saphir: Spurious timer!\n");
+	writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
+	writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
+	writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
+	writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
+	writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
+	writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
+	spin_unlock_irqrestore(&cs->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static void
+SaphirWatchDog(struct IsdnCardState *cs)
+{
+	u_long flags;
+
+	spin_lock_irqsave(&cs->lock, flags);
+	/* 5 sec WatchDog, so read at least every 4 sec */
+	cs->readisac(cs, ISAC_RBCH);
+	spin_unlock_irqrestore(&cs->lock, flags);
+	mod_timer(&cs->hw.saphir.timer, jiffies + 1 * HZ);
+}
+
+static void
+release_io_saphir(struct IsdnCardState *cs)
+{
+	byteout(cs->hw.saphir.cfg_reg + IRQ_REG, 0xff);
+	del_timer(&cs->hw.saphir.timer);
+	cs->hw.saphir.timer.function = NULL;
+	if (cs->hw.saphir.cfg_reg)
+		release_region(cs->hw.saphir.cfg_reg, 6);
+}
+
+static int
+saphir_reset(struct IsdnCardState *cs)
+{
+	u_char irq_val;
+
+	switch (cs->irq) {
+	case 5: irq_val = 0;
+		break;
+	case 3: irq_val = 1;
+		break;
+	case 11:
+		irq_val = 2;
+		break;
+	case 12:
+		irq_val = 3;
+		break;
+	case 15:
+		irq_val = 4;
+		break;
+	default:
+		printk(KERN_WARNING "HiSax: saphir wrong IRQ %d\n",
+		       cs->irq);
+		return (1);
+	}
+	byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
+	byteout(cs->hw.saphir.cfg_reg + RESET_REG, 1);
+	mdelay(10);
+	byteout(cs->hw.saphir.cfg_reg + RESET_REG, 0);
+	mdelay(10);
+	byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
+	byteout(cs->hw.saphir.cfg_reg + SPARE_REG, 0x02);
+	return (0);
+}
+
+static int
+saphir_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	u_long flags;
+
+	switch (mt) {
+	case CARD_RESET:
+		spin_lock_irqsave(&cs->lock, flags);
+		saphir_reset(cs);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return (0);
+	case CARD_RELEASE:
+		release_io_saphir(cs);
+		return (0);
+	case CARD_INIT:
+		spin_lock_irqsave(&cs->lock, flags);
+		inithscxisac(cs, 3);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return (0);
+	case CARD_TEST:
+		return (0);
+	}
+	return (0);
+}
+
+
+int setup_saphir(struct IsdnCard *card)
+{
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+
+	strcpy(tmp, saphir_rev);
+	printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
+	if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
+		return (0);
+
+	/* IO-Ports */
+	cs->hw.saphir.cfg_reg = card->para[1];
+	cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
+	cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
+	cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
+	cs->irq = card->para[0];
+	if (!request_region(cs->hw.saphir.cfg_reg, 6, "saphir")) {
+		printk(KERN_WARNING
+		       "HiSax: HST Saphir config port %x-%x already in use\n",
+		       cs->hw.saphir.cfg_reg,
+		       cs->hw.saphir.cfg_reg + 5);
+		return (0);
+	}
+
+	printk(KERN_INFO "HiSax: HST Saphir config irq:%d io:0x%X\n",
+	       cs->irq, cs->hw.saphir.cfg_reg);
+
+	setup_isac(cs);
+	cs->hw.saphir.timer.function = (void *) SaphirWatchDog;
+	cs->hw.saphir.timer.data = (long) cs;
+	init_timer(&cs->hw.saphir.timer);
+	cs->hw.saphir.timer.expires = jiffies + 4 * HZ;
+	add_timer(&cs->hw.saphir.timer);
+	if (saphir_reset(cs)) {
+		release_io_saphir(cs);
+		return (0);
+	}
+	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 = &saphir_card_msg;
+	cs->irq_func = &saphir_interrupt;
+	ISACVersion(cs, "saphir:");
+	if (HscxVersion(cs, "saphir:")) {
+		printk(KERN_WARNING
+		       "saphir: wrong HSCX versions check IO address\n");
+		release_io_saphir(cs);
+		return (0);
+	}
+	return (1);
+}