Initial import

1 files changed, 335 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/teleint.c b/drivers/isdn/hisax/teleint.c
new file mode 100644
index 000000000..bf647545c
--- /dev/null
+++ b/drivers/isdn/hisax/teleint.c
@@ -0,0 +1,335 @@
+/* $Id: teleint.c,v 1.16.2.5 2004/01/19 15:31:50 keil Exp $
+ *
+ * low level stuff for TeleInt 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 "hfc_2bs0.h"
+#include "isdnl1.h"
+
+static const char *TeleInt_revision = "$Revision: 1.16.2.5 $";
+
+#define byteout(addr, val) outb(val, addr)
+#define bytein(addr) inb(addr)
+
+static inline u_char
+readreg(unsigned int ale, unsigned int adr, u_char off)
+{
+	register u_char ret;
+	int max_delay = 2000;
+
+	byteout(ale, off);
+	ret = HFC_BUSY & bytein(ale);
+	while (ret && --max_delay)
+		ret = HFC_BUSY & bytein(ale);
+	if (!max_delay) {
+		printk(KERN_WARNING "TeleInt Busy not inactive\n");
+		return (0);
+	}
+	ret = bytein(adr);
+	return (ret);
+}
+
+static inline void
+readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
+{
+	register u_char ret;
+	register int max_delay = 20000;
+	register int i;
+
+	byteout(ale, off);
+	for (i = 0; i < size; i++) {
+		ret = HFC_BUSY & bytein(ale);
+		while (ret && --max_delay)
+			ret = HFC_BUSY & bytein(ale);
+		if (!max_delay) {
+			printk(KERN_WARNING "TeleInt Busy not inactive\n");
+			return;
+		}
+		data[i] = bytein(adr);
+	}
+}
+
+
+static inline void
+writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
+{
+	register u_char ret;
+	int max_delay = 2000;
+
+	byteout(ale, off);
+	ret = HFC_BUSY & bytein(ale);
+	while (ret && --max_delay)
+		ret = HFC_BUSY & bytein(ale);
+	if (!max_delay) {
+		printk(KERN_WARNING "TeleInt Busy not inactive\n");
+		return;
+	}
+	byteout(adr, data);
+}
+
+static inline void
+writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
+{
+	register u_char ret;
+	register int max_delay = 20000;
+	register int i;
+
+	byteout(ale, off);
+	for (i = 0; i < size; i++) {
+		ret = HFC_BUSY & bytein(ale);
+		while (ret && --max_delay)
+			ret = HFC_BUSY & bytein(ale);
+		if (!max_delay) {
+			printk(KERN_WARNING "TeleInt Busy not inactive\n");
+			return;
+		}
+		byteout(adr, data[i]);
+	}
+}
+
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+	cs->hw.hfc.cip = offset;
+	return (readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	cs->hw.hfc.cip = offset;
+	writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset, value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	cs->hw.hfc.cip = 0;
+	readfifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+	cs->hw.hfc.cip = 0;
+	writefifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
+}
+
+static u_char
+ReadHFC(struct IsdnCardState *cs, int data, u_char reg)
+{
+	register u_char ret;
+
+	if (data) {
+		cs->hw.hfc.cip = reg;
+		byteout(cs->hw.hfc.addr | 1, reg);
+		ret = bytein(cs->hw.hfc.addr);
+		if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
+			debugl1(cs, "hfc RD %02x %02x", reg, ret);
+	} else
+		ret = bytein(cs->hw.hfc.addr | 1);
+	return (ret);
+}
+
+static void
+WriteHFC(struct IsdnCardState *cs, int data, u_char reg, u_char value)
+{
+	byteout(cs->hw.hfc.addr | 1, reg);
+	cs->hw.hfc.cip = reg;
+	if (data)
+		byteout(cs->hw.hfc.addr, value);
+	if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
+		debugl1(cs, "hfc W%c %02x %02x", data ? 'D' : 'C', reg, value);
+}
+
+static irqreturn_t
+TeleInt_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.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
+Start_ISAC:
+	if (val)
+		isac_interrupt(cs, val);
+	val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
+	if (val) {
+		if (cs->debug & L1_DEB_ISAC)
+			debugl1(cs, "ISAC IntStat after IntRoutine");
+		goto Start_ISAC;
+	}
+	writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0xFF);
+	writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0x0);
+	spin_unlock_irqrestore(&cs->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static void
+TeleInt_Timer(struct IsdnCardState *cs)
+{
+	int stat = 0;
+	u_long flags;
+
+	spin_lock_irqsave(&cs->lock, flags);
+	if (cs->bcs[0].mode) {
+		stat |= 1;
+		main_irq_hfc(&cs->bcs[0]);
+	}
+	if (cs->bcs[1].mode) {
+		stat |= 2;
+		main_irq_hfc(&cs->bcs[1]);
+	}
+	spin_unlock_irqrestore(&cs->lock, flags);
+	stat = HZ / 100;
+	if (!stat)
+		stat = 1;
+	cs->hw.hfc.timer.expires = jiffies + stat;
+	add_timer(&cs->hw.hfc.timer);
+}
+
+static void
+release_io_TeleInt(struct IsdnCardState *cs)
+{
+	del_timer(&cs->hw.hfc.timer);
+	releasehfc(cs);
+	if (cs->hw.hfc.addr)
+		release_region(cs->hw.hfc.addr, 2);
+}
+
+static void
+reset_TeleInt(struct IsdnCardState *cs)
+{
+	printk(KERN_INFO "TeleInt: resetting card\n");
+	cs->hw.hfc.cirm |= HFC_RESET;
+	byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);	/* Reset On */
+	mdelay(10);
+	cs->hw.hfc.cirm &= ~HFC_RESET;
+	byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);	/* Reset Off */
+	mdelay(10);
+}
+
+static int
+TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	u_long flags;
+	int delay;
+
+	switch (mt) {
+	case CARD_RESET:
+		spin_lock_irqsave(&cs->lock, flags);
+		reset_TeleInt(cs);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		return (0);
+	case CARD_RELEASE:
+		release_io_TeleInt(cs);
+		return (0);
+	case CARD_INIT:
+		spin_lock_irqsave(&cs->lock, flags);
+		reset_TeleInt(cs);
+		inithfc(cs);
+		clear_pending_isac_ints(cs);
+		initisac(cs);
+		/* Reenable all IRQ */
+		cs->writeisac(cs, ISAC_MASK, 0);
+		cs->writeisac(cs, ISAC_CMDR, 0x41);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		delay = HZ / 100;
+		if (!delay)
+			delay = 1;
+		cs->hw.hfc.timer.expires = jiffies + delay;
+		add_timer(&cs->hw.hfc.timer);
+		return (0);
+	case CARD_TEST:
+		return (0);
+	}
+	return (0);
+}
+
+int setup_TeleInt(struct IsdnCard *card)
+{
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+
+	strcpy(tmp, TeleInt_revision);
+	printk(KERN_INFO "HiSax: TeleInt driver Rev. %s\n", HiSax_getrev(tmp));
+	if (cs->typ != ISDN_CTYPE_TELEINT)
+		return (0);
+
+	cs->hw.hfc.addr = card->para[1] & 0x3fe;
+	cs->irq = card->para[0];
+	cs->hw.hfc.cirm = HFC_CIRM;
+	cs->hw.hfc.isac_spcr = 0x00;
+	cs->hw.hfc.cip = 0;
+	cs->hw.hfc.ctmt = HFC_CTMT | HFC_CLTIMER;
+	cs->bcs[0].hw.hfc.send = NULL;
+	cs->bcs[1].hw.hfc.send = NULL;
+	cs->hw.hfc.fifosize = 7 * 1024 + 512;
+	cs->hw.hfc.timer.function = (void *) TeleInt_Timer;
+	cs->hw.hfc.timer.data = (long) cs;
+	init_timer(&cs->hw.hfc.timer);
+	if (!request_region(cs->hw.hfc.addr, 2, "TeleInt isdn")) {
+		printk(KERN_WARNING
+		       "HiSax: TeleInt config port %x-%x already in use\n",
+		       cs->hw.hfc.addr,
+		       cs->hw.hfc.addr + 2);
+		return (0);
+	}
+	/* HW IO = IO */
+	byteout(cs->hw.hfc.addr, cs->hw.hfc.addr & 0xff);
+	byteout(cs->hw.hfc.addr | 1, ((cs->hw.hfc.addr & 0x300) >> 8) | 0x54);
+	switch (cs->irq) {
+	case 3:
+		cs->hw.hfc.cirm |= HFC_INTA;
+		break;
+	case 4:
+		cs->hw.hfc.cirm |= HFC_INTB;
+		break;
+	case 5:
+		cs->hw.hfc.cirm |= HFC_INTC;
+		break;
+	case 7:
+		cs->hw.hfc.cirm |= HFC_INTD;
+		break;
+	case 10:
+		cs->hw.hfc.cirm |= HFC_INTE;
+		break;
+	case 11:
+		cs->hw.hfc.cirm |= HFC_INTF;
+		break;
+	default:
+		printk(KERN_WARNING "TeleInt: wrong IRQ\n");
+		release_io_TeleInt(cs);
+		return (0);
+	}
+	byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);
+	byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.ctmt);
+
+	printk(KERN_INFO "TeleInt: defined at 0x%x IRQ %d\n",
+	       cs->hw.hfc.addr, cs->irq);
+
+	setup_isac(cs);
+	cs->readisac = &ReadISAC;
+	cs->writeisac = &WriteISAC;
+	cs->readisacfifo = &ReadISACfifo;
+	cs->writeisacfifo = &WriteISACfifo;
+	cs->BC_Read_Reg = &ReadHFC;
+	cs->BC_Write_Reg = &WriteHFC;
+	cs->cardmsg = &TeleInt_card_msg;
+	cs->irq_func = &TeleInt_interrupt;
+	ISACVersion(cs, "TeleInt:");
+	return (1);
+}