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, 364 insertions, 0 deletions

diff --git a/kernel/drivers/isdn/hisax/teles0.c b/kernel/drivers/isdn/hisax/teles0.c
new file mode 100644
index 000000000..ce9eabdd2
--- /dev/null
+++ b/kernel/drivers/isdn/hisax/teles0.c
@@ -0,0 +1,364 @@
+/* $Id: teles0.c,v 2.15.2.4 2004/01/13 23:48:39 keil Exp $
+ *
+ * low level stuff for Teles Memory IO isdn cards
+ *
+ * Author       Karsten Keil
+ *              based on the teles driver from Jan den Ouden
+ * 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    Jan den Ouden
+ *              Fritz Elfert
+ *              Beat Doebeli
+ *
+ */
+
+#include <linux/init.h>
+#include "hisax.h"
+#include "isdnl1.h"
+#include "isac.h"
+#include "hscx.h"
+
+static const char *teles0_revision = "$Revision: 2.15.2.4 $";
+
+#define TELES_IOMEM_SIZE	0x400
+#define byteout(addr, val) outb(val, addr)
+#define bytein(addr) inb(addr)
+
+static inline u_char
+readisac(void __iomem *adr, u_char off)
+{
+	return readb(adr + ((off & 1) ? 0x2ff : 0x100) + off);
+}
+
+static inline void
+writeisac(void __iomem *adr, u_char off, u_char data)
+{
+	writeb(data, adr + ((off & 1) ? 0x2ff : 0x100) + off); mb();
+}
+
+
+static inline u_char
+readhscx(void __iomem *adr, int hscx, u_char off)
+{
+	return readb(adr + (hscx ? 0x1c0 : 0x180) +
+		     ((off & 1) ? 0x1ff : 0) + off);
+}
+
+static inline void
+writehscx(void __iomem *adr, int hscx, u_char off, u_char data)
+{
+	writeb(data, adr + (hscx ? 0x1c0 : 0x180) +
+	       ((off & 1) ? 0x1ff : 0) + off); mb();
+}
+
+static inline void
+read_fifo_isac(void __iomem *adr, u_char *data, int size)
+{
+	register int i;
+	register u_char __iomem *ad = adr + 0x100;
+	for (i = 0; i < size; i++)
+		data[i] = readb(ad);
+}
+
+static inline void
+write_fifo_isac(void __iomem *adr, u_char *data, int size)
+{
+	register int i;
+	register u_char __iomem *ad = adr + 0x100;
+	for (i = 0; i < size; i++) {
+		writeb(data[i], ad); mb();
+	}
+}
+
+static inline void
+read_fifo_hscx(void __iomem *adr, int hscx, u_char *data, int size)
+{
+	register int i;
+	register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
+	for (i = 0; i < size; i++)
+		data[i] = readb(ad);
+}
+
+static inline void
+write_fifo_hscx(void __iomem *adr, int hscx, u_char *data, int size)
+{
+	int i;
+	register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
+	for (i = 0; i < size; i++) {
+		writeb(data[i], ad); mb();
+	}
+}
+
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+	return (readisac(cs->hw.teles0.membase, offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	writeisac(cs->hw.teles0.membase, offset, value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	read_fifo_isac(cs->hw.teles0.membase, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	write_fifo_isac(cs->hw.teles0.membase, data, size);
+}
+
+static u_char
+ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
+{
+	return (readhscx(cs->hw.teles0.membase, hscx, offset));
+}
+
+static void
+WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
+{
+	writehscx(cs->hw.teles0.membase, hscx, offset, value);
+}
+
+/*
+ * fast interrupt HSCX stuff goes here
+ */
+
+#define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
+#define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
+#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
+#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
+
+#include "hscx_irq.c"
+
+static irqreturn_t
+teles0_interrupt(int intno, void *dev_id)
+{
+	struct IsdnCardState *cs = dev_id;
+	u_char val;
+	u_long flags;
+	int count = 0;
+
+	spin_lock_irqsave(&cs->lock, flags);
+	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
+Start_HSCX:
+	if (val)
+		hscx_int_main(cs, val);
+	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
+Start_ISAC:
+	if (val)
+		isac_interrupt(cs, val);
+	count++;
+	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
+	if (val && count < 5) {
+		if (cs->debug & L1_DEB_HSCX)
+			debugl1(cs, "HSCX IntStat after IntRoutine");
+		goto Start_HSCX;
+	}
+	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
+	if (val && count < 5) {
+		if (cs->debug & L1_DEB_ISAC)
+			debugl1(cs, "ISAC IntStat after IntRoutine");
+		goto Start_ISAC;
+	}
+	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
+	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
+	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
+	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
+	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
+	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
+	spin_unlock_irqrestore(&cs->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static void
+release_io_teles0(struct IsdnCardState *cs)
+{
+	if (cs->hw.teles0.cfg_reg)
+		release_region(cs->hw.teles0.cfg_reg, 8);
+	iounmap(cs->hw.teles0.membase);
+	release_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
+}
+
+static int
+reset_teles0(struct IsdnCardState *cs)
+{
+	u_char cfval;
+
+	if (cs->hw.teles0.cfg_reg) {
+		switch (cs->irq) {
+		case 2:
+		case 9:
+			cfval = 0x00;
+			break;
+		case 3:
+			cfval = 0x02;
+			break;
+		case 4:
+			cfval = 0x04;
+			break;
+		case 5:
+			cfval = 0x06;
+			break;
+		case 10:
+			cfval = 0x08;
+			break;
+		case 11:
+			cfval = 0x0A;
+			break;
+		case 12:
+			cfval = 0x0C;
+			break;
+		case 15:
+			cfval = 0x0E;
+			break;
+		default:
+			return (1);
+		}
+		cfval |= ((cs->hw.teles0.phymem >> 9) & 0xF0);
+		byteout(cs->hw.teles0.cfg_reg + 4, cfval);
+		HZDELAY(HZ / 10 + 1);
+		byteout(cs->hw.teles0.cfg_reg + 4, cfval | 1);
+		HZDELAY(HZ / 10 + 1);
+	}
+	writeb(0, cs->hw.teles0.membase + 0x80); mb();
+	HZDELAY(HZ / 5 + 1);
+	writeb(1, cs->hw.teles0.membase + 0x80); mb();
+	HZDELAY(HZ / 5 + 1);
+	return (0);
+}
+
+static int
+Teles_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	u_long flags;
+
+	switch (mt) {
+	case CARD_RESET:
+		spin_lock_irqsave(&cs->lock, flags);
+		reset_teles0(cs);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return (0);
+	case CARD_RELEASE:
+		release_io_teles0(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_teles0(struct IsdnCard *card)
+{
+	u_char val;
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+
+	strcpy(tmp, teles0_revision);
+	printk(KERN_INFO "HiSax: Teles 8.0/16.0 driver Rev. %s\n", HiSax_getrev(tmp));
+	if ((cs->typ != ISDN_CTYPE_16_0) && (cs->typ != ISDN_CTYPE_8_0))
+		return (0);
+
+	if (cs->typ == ISDN_CTYPE_16_0)
+		cs->hw.teles0.cfg_reg = card->para[2];
+	else			/* 8.0 */
+		cs->hw.teles0.cfg_reg = 0;
+
+	if (card->para[1] < 0x10000) {
+		card->para[1] <<= 4;
+		printk(KERN_INFO
+		       "Teles0: membase configured DOSish, assuming 0x%lx\n",
+		       (unsigned long) card->para[1]);
+	}
+	cs->irq = card->para[0];
+	if (cs->hw.teles0.cfg_reg) {
+		if (!request_region(cs->hw.teles0.cfg_reg, 8, "teles cfg")) {
+			printk(KERN_WARNING
+			       "HiSax: %s config port %x-%x already in use\n",
+			       CardType[card->typ],
+			       cs->hw.teles0.cfg_reg,
+			       cs->hw.teles0.cfg_reg + 8);
+			return (0);
+		}
+	}
+	if (cs->hw.teles0.cfg_reg) {
+		if ((val = bytein(cs->hw.teles0.cfg_reg + 0)) != 0x51) {
+			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
+			       cs->hw.teles0.cfg_reg + 0, val);
+			release_region(cs->hw.teles0.cfg_reg, 8);
+			return (0);
+		}
+		if ((val = bytein(cs->hw.teles0.cfg_reg + 1)) != 0x93) {
+			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
+			       cs->hw.teles0.cfg_reg + 1, val);
+			release_region(cs->hw.teles0.cfg_reg, 8);
+			return (0);
+		}
+		val = bytein(cs->hw.teles0.cfg_reg + 2);	/* 0x1e=without AB
+								 * 0x1f=with AB
+								 * 0x1c 16.3 ???
+								 */
+		if (val != 0x1e && val != 0x1f) {
+			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
+			       cs->hw.teles0.cfg_reg + 2, val);
+			release_region(cs->hw.teles0.cfg_reg, 8);
+			return (0);
+		}
+	}
+	/* 16.0 and 8.0 designed for IOM1 */
+	test_and_set_bit(HW_IOM1, &cs->HW_Flags);
+	cs->hw.teles0.phymem = card->para[1];
+	if (!request_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE, "teles iomem")) {
+		printk(KERN_WARNING
+		       "HiSax: %s memory region %lx-%lx already in use\n",
+		       CardType[card->typ],
+		       cs->hw.teles0.phymem,
+		       cs->hw.teles0.phymem + TELES_IOMEM_SIZE);
+		if (cs->hw.teles0.cfg_reg)
+			release_region(cs->hw.teles0.cfg_reg, 8);
+		return (0);
+	}
+	cs->hw.teles0.membase = ioremap(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
+	printk(KERN_INFO
+	       "HiSax: %s config irq:%d mem:%p cfg:0x%X\n",
+	       CardType[cs->typ], cs->irq,
+	       cs->hw.teles0.membase, cs->hw.teles0.cfg_reg);
+	if (reset_teles0(cs)) {
+		printk(KERN_WARNING "Teles0: wrong IRQ\n");
+		release_io_teles0(cs);
+		return (0);
+	}
+	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 = &Teles_card_msg;
+	cs->irq_func = &teles0_interrupt;
+	ISACVersion(cs, "Teles0:");
+	if (HscxVersion(cs, "Teles0:")) {
+		printk(KERN_WARNING
+		       "Teles0: wrong HSCX versions check IO/MEM addresses\n");
+		release_io_teles0(cs);
+		return (0);
+	}
+	return (1);
+}