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, 307 insertions, 0 deletions

diff --git a/kernel/drivers/isdn/hisax/avm_a1.c b/kernel/drivers/isdn/hisax/avm_a1.c
new file mode 100644
index 000000000..7dd74087a
--- /dev/null
+++ b/kernel/drivers/isdn/hisax/avm_a1.c
@@ -0,0 +1,307 @@
+/* $Id: avm_a1.c,v 2.15.2.4 2004/01/13 21:46:03 keil Exp $
+ *
+ * low level stuff for AVM A1 (Fritz) isdn cards
+ *
+ * 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.
+ *
+ */
+
+#include <linux/init.h>
+#include "hisax.h"
+#include "isac.h"
+#include "hscx.h"
+#include "isdnl1.h"
+
+static const char *avm_revision = "$Revision: 2.15.2.4 $";
+
+#define	 AVM_A1_STAT_ISAC	0x01
+#define	 AVM_A1_STAT_HSCX	0x02
+#define	 AVM_A1_STAT_TIMER	0x04
+
+#define byteout(addr, val) outb(val, addr)
+#define bytein(addr) inb(addr)
+
+static inline u_char
+readreg(unsigned int adr, u_char off)
+{
+	return (bytein(adr + off));
+}
+
+static inline void
+writereg(unsigned int adr, u_char off, u_char data)
+{
+	byteout(adr + off, data);
+}
+
+
+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 (readreg(cs->hw.avm.isac, offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	writereg(cs->hw.avm.isac, offset, value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	read_fifo(cs->hw.avm.isacfifo, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	write_fifo(cs->hw.avm.isacfifo, data, size);
+}
+
+static u_char
+ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
+{
+	return (readreg(cs->hw.avm.hscx[hscx], offset));
+}
+
+static void
+WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
+{
+	writereg(cs->hw.avm.hscx[hscx], offset, value);
+}
+
+/*
+ * fast interrupt HSCX stuff goes here
+ */
+
+#define READHSCX(cs, nr, reg) readreg(cs->hw.avm.hscx[nr], reg)
+#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.avm.hscx[nr], reg, data)
+#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
+#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
+
+#include "hscx_irq.c"
+
+static irqreturn_t
+avm_a1_interrupt(int intno, void *dev_id)
+{
+	struct IsdnCardState *cs = dev_id;
+	u_char val, sval;
+	u_long flags;
+
+	spin_lock_irqsave(&cs->lock, flags);
+	while (((sval = bytein(cs->hw.avm.cfg_reg)) & 0xf) != 0x7) {
+		if (!(sval & AVM_A1_STAT_TIMER)) {
+			byteout(cs->hw.avm.cfg_reg, 0x1E);
+			sval = bytein(cs->hw.avm.cfg_reg);
+		} else if (cs->debug & L1_DEB_INTSTAT)
+			debugl1(cs, "avm IntStatus %x", sval);
+		if (!(sval & AVM_A1_STAT_HSCX)) {
+			val = readreg(cs->hw.avm.hscx[1], HSCX_ISTA);
+			if (val)
+				hscx_int_main(cs, val);
+		}
+		if (!(sval & AVM_A1_STAT_ISAC)) {
+			val = readreg(cs->hw.avm.isac, ISAC_ISTA);
+			if (val)
+				isac_interrupt(cs, val);
+		}
+	}
+	writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0xFF);
+	writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0xFF);
+	writereg(cs->hw.avm.isac, ISAC_MASK, 0xFF);
+	writereg(cs->hw.avm.isac, ISAC_MASK, 0x0);
+	writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0x0);
+	writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0x0);
+	spin_unlock_irqrestore(&cs->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static inline void
+release_ioregs(struct IsdnCardState *cs, int mask)
+{
+	release_region(cs->hw.avm.cfg_reg, 8);
+	if (mask & 1)
+		release_region(cs->hw.avm.isac + 32, 32);
+	if (mask & 2)
+		release_region(cs->hw.avm.isacfifo, 1);
+	if (mask & 4)
+		release_region(cs->hw.avm.hscx[0] + 32, 32);
+	if (mask & 8)
+		release_region(cs->hw.avm.hscxfifo[0], 1);
+	if (mask & 0x10)
+		release_region(cs->hw.avm.hscx[1] + 32, 32);
+	if (mask & 0x20)
+		release_region(cs->hw.avm.hscxfifo[1], 1);
+}
+
+static int
+AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	u_long flags;
+
+	switch (mt) {
+	case CARD_RESET:
+		return (0);
+	case CARD_RELEASE:
+		release_ioregs(cs, 0x3f);
+		return (0);
+	case CARD_INIT:
+		spin_lock_irqsave(&cs->lock, flags);
+		inithscxisac(cs, 1);
+		byteout(cs->hw.avm.cfg_reg, 0x16);
+		byteout(cs->hw.avm.cfg_reg, 0x1E);
+		inithscxisac(cs, 2);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return (0);
+	case CARD_TEST:
+		return (0);
+	}
+	return (0);
+}
+
+int setup_avm_a1(struct IsdnCard *card)
+{
+	u_char val;
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+
+	strcpy(tmp, avm_revision);
+	printk(KERN_INFO "HiSax: AVM driver Rev. %s\n", HiSax_getrev(tmp));
+	if (cs->typ != ISDN_CTYPE_A1)
+		return (0);
+
+	cs->hw.avm.cfg_reg = card->para[1] + 0x1800;
+	cs->hw.avm.isac = card->para[1] + 0x1400 - 0x20;
+	cs->hw.avm.hscx[0] = card->para[1] + 0x400 - 0x20;
+	cs->hw.avm.hscx[1] = card->para[1] + 0xc00 - 0x20;
+	cs->hw.avm.isacfifo = card->para[1] + 0x1000;
+	cs->hw.avm.hscxfifo[0] = card->para[1];
+	cs->hw.avm.hscxfifo[1] = card->para[1] + 0x800;
+	cs->irq = card->para[0];
+	if (!request_region(cs->hw.avm.cfg_reg, 8, "avm cfg")) {
+		printk(KERN_WARNING
+		       "HiSax: AVM A1 config port %x-%x already in use\n",
+		       cs->hw.avm.cfg_reg,
+		       cs->hw.avm.cfg_reg + 8);
+		return (0);
+	}
+	if (!request_region(cs->hw.avm.isac + 32, 32, "HiSax isac")) {
+		printk(KERN_WARNING
+		       "HiSax: AVM A1 isac ports %x-%x already in use\n",
+		       cs->hw.avm.isac + 32,
+		       cs->hw.avm.isac + 64);
+		release_ioregs(cs, 0);
+		return (0);
+	}
+	if (!request_region(cs->hw.avm.isacfifo, 1, "HiSax isac fifo")) {
+		printk(KERN_WARNING
+		       "HiSax: AVM A1 isac fifo port %x already in use\n",
+		       cs->hw.avm.isacfifo);
+		release_ioregs(cs, 1);
+		return (0);
+	}
+	if (!request_region(cs->hw.avm.hscx[0] + 32, 32, "HiSax hscx A")) {
+		printk(KERN_WARNING
+		       "HiSax: AVM A1 hscx A ports %x-%x already in use\n",
+		       cs->hw.avm.hscx[0] + 32,
+		       cs->hw.avm.hscx[0] + 64);
+		release_ioregs(cs, 3);
+		return (0);
+	}
+	if (!request_region(cs->hw.avm.hscxfifo[0], 1, "HiSax hscx A fifo")) {
+		printk(KERN_WARNING
+		       "HiSax: AVM A1 hscx A fifo port %x already in use\n",
+		       cs->hw.avm.hscxfifo[0]);
+		release_ioregs(cs, 7);
+		return (0);
+	}
+	if (!request_region(cs->hw.avm.hscx[1] + 32, 32, "HiSax hscx B")) {
+		printk(KERN_WARNING
+		       "HiSax: AVM A1 hscx B ports %x-%x already in use\n",
+		       cs->hw.avm.hscx[1] + 32,
+		       cs->hw.avm.hscx[1] + 64);
+		release_ioregs(cs, 0xf);
+		return (0);
+	}
+	if (!request_region(cs->hw.avm.hscxfifo[1], 1, "HiSax hscx B fifo")) {
+		printk(KERN_WARNING
+		       "HiSax: AVM A1 hscx B fifo port %x already in use\n",
+		       cs->hw.avm.hscxfifo[1]);
+		release_ioregs(cs, 0x1f);
+		return (0);
+	}
+	byteout(cs->hw.avm.cfg_reg, 0x0);
+	HZDELAY(HZ / 5 + 1);
+	byteout(cs->hw.avm.cfg_reg, 0x1);
+	HZDELAY(HZ / 5 + 1);
+	byteout(cs->hw.avm.cfg_reg, 0x0);
+	HZDELAY(HZ / 5 + 1);
+	val = cs->irq;
+	if (val == 9)
+		val = 2;
+	byteout(cs->hw.avm.cfg_reg + 1, val);
+	HZDELAY(HZ / 5 + 1);
+	byteout(cs->hw.avm.cfg_reg, 0x0);
+	HZDELAY(HZ / 5 + 1);
+
+	val = bytein(cs->hw.avm.cfg_reg);
+	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
+	       cs->hw.avm.cfg_reg, val);
+	val = bytein(cs->hw.avm.cfg_reg + 3);
+	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
+	       cs->hw.avm.cfg_reg + 3, val);
+	val = bytein(cs->hw.avm.cfg_reg + 2);
+	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
+	       cs->hw.avm.cfg_reg + 2, val);
+	val = bytein(cs->hw.avm.cfg_reg);
+	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
+	       cs->hw.avm.cfg_reg, val);
+
+	printk(KERN_INFO "HiSax: AVM A1 config irq:%d cfg:0x%X\n",
+	       cs->irq,
+	       cs->hw.avm.cfg_reg);
+	printk(KERN_INFO
+	       "HiSax: isac:0x%X/0x%X\n",
+	       cs->hw.avm.isac + 32, cs->hw.avm.isacfifo);
+	printk(KERN_INFO
+	       "HiSax: hscx A:0x%X/0x%X  hscx B:0x%X/0x%X\n",
+	       cs->hw.avm.hscx[0] + 32, cs->hw.avm.hscxfifo[0],
+	       cs->hw.avm.hscx[1] + 32, cs->hw.avm.hscxfifo[1]);
+
+	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;
+	setup_isac(cs);
+	cs->cardmsg = &AVM_card_msg;
+	cs->irq_func = &avm_a1_interrupt;
+	ISACVersion(cs, "AVM A1:");
+	if (HscxVersion(cs, "AVM A1:")) {
+		printk(KERN_WARNING
+		       "AVM A1: wrong HSCX versions check IO address\n");
+		release_ioregs(cs, 0x3f);
+		return (0);
+	}
+	return (1);
+}