Release 4.7 drivers/isdn/hisax/gazel.c

/* $Id: gazel.c,v 2.19.2.4 2004/01/14 16:04:48 keil Exp $
 *
 * low level stuff for Gazel isdn cards
 *
 * Author       BeWan Systems
 *              based on source code from Karsten Keil
 * Copyright    by BeWan Systems
 *
 * 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"
#include "ipac.h"
#include <linux/pci.h>


static const char *gazel_revision = "$Revision: 2.19.2.4 $";


#define R647      1

#define R685      2

#define R753      3

#define R742      4


#define PLX_CNTRL    0x50	
/* registre de controle PLX */

#define RESET_GAZEL  0x4

#define RESET_9050   0x40000000

#define PLX_INCSR    0x4C	
/* registre d'IT du 9050 */

#define INT_ISAC_EN  0x8	
/* 1 = enable IT isac */

#define INT_ISAC     0x20	
/* 1 = IT isac en cours */

#define INT_HSCX_EN  0x1	
/* 1 = enable IT hscx */

#define INT_HSCX     0x4	
/* 1 = IT hscx en cours */

#define INT_PCI_EN   0x40	
/* 1 = enable IT PCI */

#define INT_IPAC_EN  0x3	
/* enable IT ipac */



#define byteout(addr, val) outb(val, addr)

#define bytein(addr) inb(addr)


static inline u_char

readreg(unsigned int adr, u_short off)
{
	return bytein(adr + off);
}

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static inline void

writereg(unsigned int adr, u_short off, u_char data)
{
	byteout(adr + off, data);
}


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static inline void

read_fifo(unsigned int adr, u_char *data, int size)
{
	insb(adr, data, size);
}

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static void

write_fifo(unsigned int adr, u_char *data, int size)
{
	outsb(adr, data, size);
}

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static inline u_char

readreg_ipac(unsigned int adr, u_short off)
{
	register u_char ret;

	byteout(adr, off);
	ret = bytein(adr + 4);
	return ret;
}

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static inline void

writereg_ipac(unsigned int adr, u_short off, u_char data)
{
	byteout(adr, off);
	byteout(adr + 4, data);
}


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static inline void

read_fifo_ipac(unsigned int adr, u_short off, u_char *data, int size)
{
	byteout(adr, off);
	insb(adr + 4, data, size);
}

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static void

write_fifo_ipac(unsigned int adr, u_short off, u_char *data, int size)
{
	byteout(adr, off);
	outsb(adr + 4, data, size);
}

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/* Interface functions */


static u_char

ReadISAC(struct IsdnCardState *cs, u_char offset)
{
	u_short off2 = offset;

	switch (cs->subtyp) {
	case R647:
		off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
	case R685:
		return (readreg(cs->hw.gazel.isac, off2));
	case R753:
	case R742:
		return (readreg_ipac(cs->hw.gazel.ipac, 0x80 + off2));
	}
	return 0;
}

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static void

WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
	u_short off2 = offset;

	switch (cs->subtyp) {
	case R647:
		off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
	case R685:
		writereg(cs->hw.gazel.isac, off2, value);
		break;
	case R753:
	case R742:
		writereg_ipac(cs->hw.gazel.ipac, 0x80 + off2, value);
		break;
	}
}

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static void

ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	switch (cs->subtyp) {
	case R647:
	case R685:
		read_fifo(cs->hw.gazel.isacfifo, data, size);
		break;
	case R753:
	case R742:
		read_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size);
		break;
	}
}

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static void

WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	switch (cs->subtyp) {
	case R647:
	case R685:
		write_fifo(cs->hw.gazel.isacfifo, data, size);
		break;
	case R753:
	case R742:
		write_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size);
		break;
	}
}

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static void

ReadHSCXfifo(struct IsdnCardState *cs, int hscx, u_char *data, int size)
{
	switch (cs->subtyp) {
	case R647:
	case R685:
		read_fifo(cs->hw.gazel.hscxfifo[hscx], data, size);
		break;
	case R753:
	case R742:
		read_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size);
		break;
	}
}

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static void

WriteHSCXfifo(struct IsdnCardState *cs, int hscx, u_char *data, int size)
{
	switch (cs->subtyp) {
	case R647:
	case R685:
		write_fifo(cs->hw.gazel.hscxfifo[hscx], data, size);
		break;
	case R753:
	case R742:
		write_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size);
		break;
	}
}

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static u_char

ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
	u_short off2 = offset;

	switch (cs->subtyp) {
	case R647:
		off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
	case R685:
		return (readreg(cs->hw.gazel.hscx[hscx], off2));
	case R753:
	case R742:
		return (readreg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2));
	}
	return 0;
}

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static void

WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
	u_short off2 = offset;

	switch (cs->subtyp) {
	case R647:
		off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
	case R685:
		writereg(cs->hw.gazel.hscx[hscx], off2, value);
		break;
	case R753:
	case R742:
		writereg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2, value);
		break;
	}
}

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/*
 * 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

gazel_interrupt(int intno, void *dev_id)
{

#define MAXCOUNT 5
	struct IsdnCardState *cs = dev_id;
	u_char valisac, valhscx;
	int count = 0;
	u_long flags;

	spin_lock_irqsave(&cs->lock, flags);
	do {
		valhscx = ReadHSCX(cs, 1, HSCX_ISTA);
		if (valhscx)
			hscx_int_main(cs, valhscx);
		valisac = ReadISAC(cs, ISAC_ISTA);
		if (valisac)
			isac_interrupt(cs, valisac);
		count++;
	} while ((valhscx || valisac) && (count < MAXCOUNT));

	WriteHSCX(cs, 0, HSCX_MASK, 0xFF);
	WriteHSCX(cs, 1, HSCX_MASK, 0xFF);
	WriteISAC(cs, ISAC_MASK, 0xFF);
	WriteISAC(cs, ISAC_MASK, 0x0);
	WriteHSCX(cs, 0, HSCX_MASK, 0x0);
	WriteHSCX(cs, 1, HSCX_MASK, 0x0);
	spin_unlock_irqrestore(&cs->lock, flags);
	return IRQ_HANDLED;
}


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static irqreturn_t

gazel_interrupt_ipac(int intno, void *dev_id)
{
	struct IsdnCardState *cs = dev_id;
	u_char ista, val;
	int count = 0;
	u_long flags;

	spin_lock_irqsave(&cs->lock, flags);
	ista = ReadISAC(cs, IPAC_ISTA - 0x80);
	do {
		if (ista & 0x0f) {
			val = ReadHSCX(cs, 1, HSCX_ISTA);
			if (ista & 0x01)
				val |= 0x01;
			if (ista & 0x04)
				val |= 0x02;
			if (ista & 0x08)
				val |= 0x04;
			if (val) {
				hscx_int_main(cs, val);
			}
		}
		if (ista & 0x20) {
			val = 0xfe & ReadISAC(cs, ISAC_ISTA);
			if (val) {
				isac_interrupt(cs, val);
			}
		}
		if (ista & 0x10) {
			val = 0x01;
			isac_interrupt(cs, val);
		}
		ista = ReadISAC(cs, IPAC_ISTA - 0x80);
		count++;
	}
	while ((ista & 0x3f) && (count < MAXCOUNT));

	WriteISAC(cs, IPAC_MASK - 0x80, 0xFF);
	WriteISAC(cs, IPAC_MASK - 0x80, 0xC0);
	spin_unlock_irqrestore(&cs->lock, flags);
	return IRQ_HANDLED;
}

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static void

release_io_gazel(struct IsdnCardState *cs)
{
	unsigned int i;

	switch (cs->subtyp) {
	case R647:
		for (i = 0x0000; i < 0xC000; i += 0x1000)
			release_region(i + cs->hw.gazel.hscx[0], 16);
		release_region(0xC000 + cs->hw.gazel.hscx[0], 1);
		break;

	case R685:
		release_region(cs->hw.gazel.hscx[0], 0x100);
		release_region(cs->hw.gazel.cfg_reg, 0x80);
		break;

	case R753:
		release_region(cs->hw.gazel.ipac, 0x8);
		release_region(cs->hw.gazel.cfg_reg, 0x80);
		break;

	case R742:
		release_region(cs->hw.gazel.ipac, 8);
		break;
	}
}

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static int

reset_gazel(struct IsdnCardState *cs)
{
	unsigned long plxcntrl, addr = cs->hw.gazel.cfg_reg;

	switch (cs->subtyp) {
	case R647:
		writereg(addr, 0, 0);
		HZDELAY(10);
		writereg(addr, 0, 1);
		HZDELAY(2);
		break;
	case R685:
		plxcntrl = inl(addr + PLX_CNTRL);
		plxcntrl |= (RESET_9050 + RESET_GAZEL);
		outl(plxcntrl, addr + PLX_CNTRL);
		plxcntrl &= ~(RESET_9050 + RESET_GAZEL);
		HZDELAY(4);
		outl(plxcntrl, addr + PLX_CNTRL);
		HZDELAY(10);
		outb(INT_ISAC_EN + INT_HSCX_EN + INT_PCI_EN, addr + PLX_INCSR);
		break;
	case R753:
		plxcntrl = inl(addr + PLX_CNTRL);
		plxcntrl |= (RESET_9050 + RESET_GAZEL);
		outl(plxcntrl, addr + PLX_CNTRL);
		plxcntrl &= ~(RESET_9050 + RESET_GAZEL);
		WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20);
		HZDELAY(4);
		outl(plxcntrl, addr + PLX_CNTRL);
		HZDELAY(10);
		WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00);
		WriteISAC(cs, IPAC_ACFG - 0x80, 0xff);
		WriteISAC(cs, IPAC_AOE - 0x80, 0x0);
		WriteISAC(cs, IPAC_MASK - 0x80, 0xff);
		WriteISAC(cs, IPAC_CONF - 0x80, 0x1);
		outb(INT_IPAC_EN + INT_PCI_EN, addr + PLX_INCSR);
		WriteISAC(cs, IPAC_MASK - 0x80, 0xc0);
		break;
	case R742:
		WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20);
		HZDELAY(4);
		WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00);
		WriteISAC(cs, IPAC_ACFG - 0x80, 0xff);
		WriteISAC(cs, IPAC_AOE - 0x80, 0x0);
		WriteISAC(cs, IPAC_MASK - 0x80, 0xff);
		WriteISAC(cs, IPAC_CONF - 0x80, 0x1);
		WriteISAC(cs, IPAC_MASK - 0x80, 0xc0);
		break;
	}
	return (0);
}

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static int

Gazel_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
	u_long flags;

	switch (mt) {
	case CARD_RESET:
		spin_lock_irqsave(&cs->lock, flags);
		reset_gazel(cs);
		spin_unlock_irqrestore(&cs->lock, flags);
		return (0);
	case CARD_RELEASE:
		release_io_gazel(cs);
		return (0);
	case CARD_INIT:
		spin_lock_irqsave(&cs->lock, flags);
		inithscxisac(cs, 1);
		if ((cs->subtyp == R647) || (cs->subtyp == R685)) {
			int i;
			for (i = 0; i < (2 + MAX_WAITING_CALLS); i++) {
				cs->bcs[i].hw.hscx.tsaxr0 = 0x1f;
				cs->bcs[i].hw.hscx.tsaxr1 = 0x23;
			}
		}
		spin_unlock_irqrestore(&cs->lock, flags);
		return (0);
	case CARD_TEST:
		return (0);
	}
	return (0);
}

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static int

reserve_regions(struct IsdnCard *card, struct IsdnCardState *cs)
{
	unsigned int i, j, base = 0, adr = 0, len = 0;

	switch (cs->subtyp) {
	case R647:
		base = cs->hw.gazel.hscx[0];
		if (!request_region(adr = (0xC000 + base), len = 1, "gazel"))
			goto error;
		for (i = 0x0000; i < 0xC000; i += 0x1000) {
			if (!request_region(adr = (i + base), len = 16, "gazel"))
				goto error;
		}
		if (i != 0xC000) {
			for (j = 0; j < i; j += 0x1000)
				release_region(j + base, 16);
			release_region(0xC000 + base, 1);
			goto error;
		}
		break;

	case R685:
		if (!request_region(adr = cs->hw.gazel.hscx[0], len = 0x100, "gazel"))
			goto error;
		if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) {
			release_region(cs->hw.gazel.hscx[0], 0x100);
			goto error;
		}
		break;

	case R753:
		if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel"))
			goto error;
		if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) {
			release_region(cs->hw.gazel.ipac, 8);
			goto error;
		}
		break;

	case R742:
		if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel"))
			goto error;
		break;
	}

	return 0;

error:
	printk(KERN_WARNING "Gazel: io ports 0x%x-0x%x already in use\n",
	       adr, adr + len);
	return 1;
}

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kai germaschewski
kai germaschewski
12
3.36%
1
20.00%
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pre-git
10
2.80%
1
20.00%
jeff garzik
jeff garzik
1
0.28%
1
20.00%
dave jones
dave jones
1
0.28%
1
20.00%
Total
357
100.00%
5
100.00%



static int setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs)
{
	printk(KERN_INFO "Gazel: ISA PnP card automatic recognition\n");
	// we got an irq parameter, assume it is an ISA card
	// R742 decodes address even in not started...
	// R647 returns FF if not present or not started
	// eventually needs improvment
	if (readreg_ipac(card->para[1], IPAC_ID) == 1)
		cs->subtyp = R742;
	else
		cs->subtyp = R647;

	setup_isac(cs);
	cs->hw.gazel.cfg_reg = card->para[1] + 0xC000;
	cs->hw.gazel.ipac = card->para[1];
	cs->hw.gazel.isac = card->para[1] + 0x8000;
	cs->hw.gazel.hscx[0] = card->para[1];
	cs->hw.gazel.hscx[1] = card->para[1] + 0x4000;
	cs->irq = card->para[0];
	cs->hw.gazel.isacfifo = cs->hw.gazel.isac;
	cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0];
	cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1];

	switch (cs->subtyp) {
	case R647:
		printk(KERN_INFO "Gazel: Card ISA R647/R648 found\n");
		cs->dc.isac.adf2 = 0x87;
		printk(KERN_INFO
		       "Gazel: config irq:%d isac:0x%X  cfg:0x%X\n",
		       cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg);
		printk(KERN_INFO
		       "Gazel: hscx A:0x%X  hscx B:0x%X\n",
		       cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]);

		break;
	case R742:
		printk(KERN_INFO "Gazel: Card ISA R742 found\n");
		test_and_set_bit(HW_IPAC, &cs->HW_Flags);
		printk(KERN_INFO
		       "Gazel: config irq:%d ipac:0x%X\n",
		       cs->irq, cs->hw.gazel.ipac);
		break;
	}

	return (0);
}

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#ifdef CONFIG_PCI

static struct pci_dev *dev_tel = NULL;



static int setup_gazelpci(struct IsdnCardState *cs)
{
	u_int pci_ioaddr0 = 0, pci_ioaddr1 = 0;
	u_char pci_irq = 0, found;
	u_int nbseek, seekcard;

	printk(KERN_WARNING "Gazel: PCI card automatic recognition\n");

	found = 0;
	seekcard = PCI_DEVICE_ID_PLX_R685;
	for (nbseek = 0; nbseek < 4; nbseek++) {
		if ((dev_tel = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
						     seekcard, dev_tel))) {
			if (pci_enable_device(dev_tel))
				return 1;
			pci_irq = dev_tel->irq;
			pci_ioaddr0 = pci_resource_start(dev_tel, 1);
			pci_ioaddr1 = pci_resource_start(dev_tel, 2);
			found = 1;
		}
		if (found)
			break;
		else {
			switch (seekcard) {
			case PCI_DEVICE_ID_PLX_R685:
				seekcard = PCI_DEVICE_ID_PLX_R753;
				break;
			case PCI_DEVICE_ID_PLX_R753:
				seekcard = PCI_DEVICE_ID_PLX_DJINN_ITOO;
				break;
			case PCI_DEVICE_ID_PLX_DJINN_ITOO:
				seekcard = PCI_DEVICE_ID_PLX_OLITEC;
				break;
			}
		}
	}
	if (!found) {
		printk(KERN_WARNING "Gazel: No PCI card found\n");
		return (1);
	}
	if (!pci_irq) {
		printk(KERN_WARNING "Gazel: No IRQ for PCI card found\n");
		return 1;
	}
	cs->hw.gazel.pciaddr[0] = pci_ioaddr0;
	cs->hw.gazel.pciaddr[1] = pci_ioaddr1;
	setup_isac(cs);
	pci_ioaddr1 &= 0xfffe;
	cs->hw.gazel.cfg_reg = pci_ioaddr0 & 0xfffe;
	cs->hw.gazel.ipac = pci_ioaddr1;
	cs->hw.gazel.isac = pci_ioaddr1 + 0x80;
	cs->hw.gazel.hscx[0] = pci_ioaddr1;
	cs->hw.gazel.hscx[1] = pci_ioaddr1 + 0x40;
	cs->hw.gazel.isacfifo = cs->hw.gazel.isac;
	cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0];
	cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1];
	cs->irq = pci_irq;
	cs->irq_flags |= IRQF_SHARED;

	switch (seekcard) {
	case PCI_DEVICE_ID_PLX_R685:
		printk(KERN_INFO "Gazel: Card PCI R685 found\n");
		cs->subtyp = R685;
		cs->dc.isac.adf2 = 0x87;
		printk(KERN_INFO
		       "Gazel: config irq:%d isac:0x%X  cfg:0x%X\n",
		       cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg);
		printk(KERN_INFO
		       "Gazel: hscx A:0x%X  hscx B:0x%X\n",
		       cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]);
		break;
	case PCI_DEVICE_ID_PLX_R753:
	case PCI_DEVICE_ID_PLX_DJINN_ITOO:
	case PCI_DEVICE_ID_PLX_OLITEC:
		printk(KERN_INFO "Gazel: Card PCI R753 found\n");
		cs->subtyp = R753;
		test_and_set_bit(HW_IPAC, &cs->HW_Flags);
		printk(KERN_INFO
		       "Gazel: config irq:%d ipac:0x%X  cfg:0x%X\n",
		       cs->irq, cs->hw.gazel.ipac, cs->hw.gazel.cfg_reg);
		break;
	}

	return (0);
}
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tilman schmidt
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1
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thomas gleixner
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#endif /* CONFIG_PCI */



int setup_gazel(struct IsdnCard *card)
{
	struct IsdnCardState *cs = card->cs;
	char tmp[64];
	u_char val;

	strcpy(tmp, gazel_revision);
	printk(KERN_INFO "Gazel: Driver Revision %s\n", HiSax_getrev(tmp));

	if (cs->typ != ISDN_CTYPE_GAZEL)
		return (0);

	if (card->para[0]) {
		if (setup_gazelisa(card, cs))
			return (0);
	} else {

#ifdef CONFIG_PCI
		if (setup_gazelpci(cs))
			return (0);
#else
		printk(KERN_WARNING "Gazel: Card PCI requested and NO_PCI_BIOS, unable to config\n");
		return (0);
#endif				/* CONFIG_PCI */
	}

	if (reserve_regions(card, cs)) {
		return (0);
	}
	if (reset_gazel(cs)) {
		printk(KERN_WARNING "Gazel: wrong IRQ\n");
		release_io_gazel(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 = &Gazel_card_msg;

	switch (cs->subtyp) {
	case R647:
	case R685:
		cs->irq_func = &gazel_interrupt;
		ISACVersion(cs, "Gazel:");
		if (HscxVersion(cs, "Gazel:")) {
			printk(KERN_WARNING
			       "Gazel: wrong HSCX versions check IO address\n");
			release_io_gazel(cs);
			return (0);
		}
		break;
	case R742:
	case R753:
		cs->irq_func = &gazel_interrupt_ipac;
		val = ReadISAC(cs, IPAC_ID - 0x80);
		printk(KERN_INFO "Gazel: IPAC version %x\n", val);
		break;
	}

	return (1);
}
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adrian bunk
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Directory: drivers/isdn/hisax

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