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/avm_a1p.c b/kernel/drivers/isdn/hisax/avm_a1p.c
new file mode 100644
index 000000000..bc52d54ff
--- /dev/null
+++ b/kernel/drivers/isdn/hisax/avm_a1p.c
@@ -0,0 +1,267 @@
+/* $Id: avm_a1p.c,v 2.9.2.5 2004/01/24 20:47:19 keil Exp $
+ *
+ * low level stuff for the following AVM cards:
+ * A1 PCMCIA
+ * FRITZ!Card PCMCIA
+ * FRITZ!Card PCMCIA 2.0
+ *
+ * Author       Carsten Paeth
+ * Copyright    by Carsten Paeth     <calle@calle.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"
+
+/* register offsets */
+#define ADDRREG_OFFSET		0x02
+#define DATAREG_OFFSET		0x03
+#define ASL0_OFFSET		0x04
+#define ASL1_OFFSET		0x05
+#define MODREG_OFFSET		0x06
+#define VERREG_OFFSET		0x07
+
+/* address offsets */
+#define ISAC_FIFO_OFFSET	0x00
+#define ISAC_REG_OFFSET		0x20
+#define HSCX_CH_DIFF		0x40
+#define HSCX_FIFO_OFFSET	0x80
+#define HSCX_REG_OFFSET		0xa0
+
+/* read bits ASL0 */
+#define	 ASL0_R_TIMER		0x10 /* active low */
+#define	 ASL0_R_ISAC		0x20 /* active low */
+#define	 ASL0_R_HSCX		0x40 /* active low */
+#define	 ASL0_R_TESTBIT		0x80
+#define  ASL0_R_IRQPENDING	(ASL0_R_ISAC | ASL0_R_HSCX | ASL0_R_TIMER)
+
+/* write bits ASL0 */
+#define	 ASL0_W_RESET		0x01
+#define	 ASL0_W_TDISABLE	0x02
+#define	 ASL0_W_TRESET		0x04
+#define	 ASL0_W_IRQENABLE	0x08
+#define	 ASL0_W_TESTBIT		0x80
+
+/* write bits ASL1 */
+#define	 ASL1_W_LED0		0x10
+#define	 ASL1_W_LED1		0x20
+#define	 ASL1_W_ENABLE_S0	0xC0
+
+#define byteout(addr, val) outb(val, addr)
+#define bytein(addr) inb(addr)
+
+static const char *avm_revision = "$Revision: 2.9.2.5 $";
+
+static inline u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+	u_char ret;
+
+	offset -= 0x20;
+	byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, ISAC_REG_OFFSET + offset);
+	ret = bytein(cs->hw.avm.cfg_reg + DATAREG_OFFSET);
+	return ret;
+}
+
+static inline void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	offset -= 0x20;
+	byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, ISAC_REG_OFFSET + offset);
+	byteout(cs->hw.avm.cfg_reg + DATAREG_OFFSET, value);
+}
+
+static inline void
+ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, ISAC_FIFO_OFFSET);
+	insb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
+}
+
+static inline void
+WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, ISAC_FIFO_OFFSET);
+	outsb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
+}
+
+static inline u_char
+ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
+{
+	u_char ret;
+
+	offset -= 0x20;
+	byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET,
+		HSCX_REG_OFFSET + hscx * HSCX_CH_DIFF + offset);
+	ret = bytein(cs->hw.avm.cfg_reg + DATAREG_OFFSET);
+	return ret;
+}
+
+static inline void
+WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
+{
+	offset -= 0x20;
+	byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET,
+		HSCX_REG_OFFSET + hscx * HSCX_CH_DIFF + offset);
+	byteout(cs->hw.avm.cfg_reg + DATAREG_OFFSET, value);
+}
+
+static inline void
+ReadHSCXfifo(struct IsdnCardState *cs, int hscx, u_char *data, int size)
+{
+	byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET,
+		HSCX_FIFO_OFFSET + hscx * HSCX_CH_DIFF);
+	insb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
+}
+
+static inline void
+WriteHSCXfifo(struct IsdnCardState *cs, int hscx, u_char *data, int size)
+{
+	byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET,
+		HSCX_FIFO_OFFSET + hscx * HSCX_CH_DIFF);
+	outsb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
+}
+
+/*
+ * fast interrupt HSCX stuff goes here
+ */
+
+#define READHSCX(cs, nr, reg) ReadHSCX(cs, nr, reg)
+#define WRITEHSCX(cs, nr, reg, data) WriteHSCX(cs, nr, reg, data)
+#define READHSCXFIFO(cs, nr, ptr, cnt) ReadHSCXfifo(cs, nr, ptr, cnt)
+#define WRITEHSCXFIFO(cs, nr, ptr, cnt) WriteHSCXfifo(cs, nr, ptr, cnt)
+
+#include "hscx_irq.c"
+
+static irqreturn_t
+avm_a1p_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 + ASL0_OFFSET) & ASL0_R_IRQPENDING))) {
+		if (cs->debug & L1_DEB_INTSTAT)
+			debugl1(cs, "avm IntStatus %x", sval);
+		if (sval & ASL0_R_HSCX) {
+			val = ReadHSCX(cs, 1, HSCX_ISTA);
+			if (val)
+				hscx_int_main(cs, val);
+		}
+		if (sval & ASL0_R_ISAC) {
+			val = ReadISAC(cs, ISAC_ISTA);
+			if (val)
+				isac_interrupt(cs, val);
+		}
+	}
+	WriteHSCX(cs, 0, HSCX_MASK, 0xff);
+	WriteHSCX(cs, 1, HSCX_MASK, 0xff);
+	WriteISAC(cs, ISAC_MASK, 0xff);
+	WriteISAC(cs, ISAC_MASK, 0x00);
+	WriteHSCX(cs, 0, HSCX_MASK, 0x00);
+	WriteHSCX(cs, 1, HSCX_MASK, 0x00);
+	spin_unlock_irqrestore(&cs->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static int
+AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	u_long flags;
+
+	switch (mt) {
+	case CARD_RESET:
+		spin_lock_irqsave(&cs->lock, flags);
+		byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, 0x00);
+		HZDELAY(HZ / 5 + 1);
+		byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, ASL0_W_RESET);
+		HZDELAY(HZ / 5 + 1);
+		byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, 0x00);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return 0;
+
+	case CARD_RELEASE:
+		/* free_irq is done in HiSax_closecard(). */
+		/* free_irq(cs->irq, cs); */
+		return 0;
+
+	case CARD_INIT:
+		spin_lock_irqsave(&cs->lock, flags);
+		byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, ASL0_W_TDISABLE | ASL0_W_TRESET | ASL0_W_IRQENABLE);
+		clear_pending_isac_ints(cs);
+		clear_pending_hscx_ints(cs);
+		inithscxisac(cs, 1);
+		inithscxisac(cs, 2);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return 0;
+
+	case CARD_TEST:
+		/* we really don't need it for the PCMCIA Version */
+		return 0;
+
+	default:
+		/* all card drivers ignore others, so we do the same */
+		return 0;
+	}
+	return 0;
+}
+
+int setup_avm_a1_pcmcia(struct IsdnCard *card)
+{
+	u_char model, vers;
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+
+
+	strcpy(tmp, avm_revision);
+	printk(KERN_INFO "HiSax: AVM A1 PCMCIA driver Rev. %s\n",
+	       HiSax_getrev(tmp));
+	if (cs->typ != ISDN_CTYPE_A1_PCMCIA)
+		return (0);
+
+	cs->hw.avm.cfg_reg = card->para[1];
+	cs->irq = card->para[0];
+
+
+	byteout(cs->hw.avm.cfg_reg + ASL1_OFFSET, ASL1_W_ENABLE_S0);
+	byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, 0x00);
+	HZDELAY(HZ / 5 + 1);
+	byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, ASL0_W_RESET);
+	HZDELAY(HZ / 5 + 1);
+	byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, 0x00);
+
+	byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, ASL0_W_TDISABLE | ASL0_W_TRESET);
+
+	model = bytein(cs->hw.avm.cfg_reg + MODREG_OFFSET);
+	vers = bytein(cs->hw.avm.cfg_reg + VERREG_OFFSET);
+
+	printk(KERN_INFO "AVM A1 PCMCIA: io 0x%x irq %d model %d version %d\n",
+	       cs->hw.avm.cfg_reg, cs->irq, model, vers);
+
+	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 = &AVM_card_msg;
+	cs->irq_flags = IRQF_SHARED;
+	cs->irq_func = &avm_a1p_interrupt;
+
+	ISACVersion(cs, "AVM A1 PCMCIA:");
+	if (HscxVersion(cs, "AVM A1 PCMCIA:")) {
+		printk(KERN_WARNING
+		       "AVM A1 PCMCIA: wrong HSCX versions check IO address\n");
+		return (0);
+	}
+	return (1);
+}