path: root/drivers/isdn/hisax/avm_pci.c

/* $Id: avm_pci.c,v 1.29.2.4 2004/02/11 13:21:32 keil Exp $
 *
 * low level stuff for AVM Fritz!PCI and ISA PnP 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.
 *
 * Thanks to AVM, Berlin for information
 *
 */

#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "isdnl1.h"
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/isapnp.h>
#include <linux/interrupt.h>

static const char *avm_pci_rev = "$Revision: 1.29.2.4 $";

#define  AVM_FRITZ_PCI		1
#define  AVM_FRITZ_PNP		2

#define  HDLC_FIFO		0x0
#define  HDLC_STATUS		0x4

#define	 AVM_HDLC_1		0x00
#define	 AVM_HDLC_2		0x01
#define	 AVM_ISAC_FIFO		0x02
#define	 AVM_ISAC_REG_LOW	0x04
#define	 AVM_ISAC_REG_HIGH	0x06

#define  AVM_STATUS0_IRQ_ISAC	0x01
#define  AVM_STATUS0_IRQ_HDLC	0x02
#define  AVM_STATUS0_IRQ_TIMER	0x04
#define  AVM_STATUS0_IRQ_MASK	0x07

#define  AVM_STATUS0_RESET	0x01
#define  AVM_STATUS0_DIS_TIMER	0x02
#define  AVM_STATUS0_RES_TIMER	0x04
#define  AVM_STATUS0_ENA_IRQ	0x08
#define  AVM_STATUS0_TESTBIT	0x10

#define  AVM_STATUS1_INT_SEL	0x0f
#define  AVM_STATUS1_ENA_IOM	0x80

#define  HDLC_MODE_ITF_FLG	0x01
#define  HDLC_MODE_TRANS	0x02
#define  HDLC_MODE_CCR_7	0x04
#define  HDLC_MODE_CCR_16	0x08
#define  HDLC_MODE_TESTLOOP	0x80

#define  HDLC_INT_XPR		0x80
#define  HDLC_INT_XDU		0x40
#define  HDLC_INT_RPR		0x20
#define  HDLC_INT_MASK		0xE0

#define  HDLC_STAT_RME		0x01
#define  HDLC_STAT_RDO		0x10
#define  HDLC_STAT_CRCVFRRAB	0x0E
#define  HDLC_STAT_CRCVFR	0x06
#define  HDLC_STAT_RML_MASK	0x3f00

#define  HDLC_CMD_XRS		0x80
#define  HDLC_CMD_XME		0x01
#define  HDLC_CMD_RRS		0x20
#define  HDLC_CMD_XML_MASK	0x3f00


/* Interface functions */

static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
	register u_char idx = (offset > 0x2f) ? AVM_ISAC_REG_HIGH : AVM_ISAC_REG_LOW;
	register u_char val;

	outb(idx, cs->hw.avm.cfg_reg + 4);
	val = inb(cs->hw.avm.isac + (offset & 0xf));
	return (val);
}

static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
	register u_char idx = (offset > 0x2f) ? AVM_ISAC_REG_HIGH : AVM_ISAC_REG_LOW;

	outb(idx, cs->hw.avm.cfg_reg + 4);
	outb(value, cs->hw.avm.isac + (offset & 0xf));
}

static void
ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
	outb(AVM_ISAC_FIFO, cs->hw.avm.cfg_reg + 4);
	insb(cs->hw.avm.isac, data, size);
}

static void
WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
	outb(AVM_ISAC_FIFO, cs->hw.avm.cfg_reg + 4);
	outsb(cs->hw.avm.isac, data, size);
}

static inline u_int
ReadHDLCPCI(struct IsdnCardState *cs, int chan, u_char offset)
{
	register u_int idx = chan ? AVM_HDLC_2 : AVM_HDLC_1;
	register u_int val;

	outl(idx, cs->hw.avm.cfg_reg + 4);
	val = inl(cs->hw.avm.isac + offset);
	return (val);
}

static inline void
WriteHDLCPCI(struct IsdnCardState *cs, int chan, u_char offset, u_int value)
{
	register u_int idx = chan ? AVM_HDLC_2 : AVM_HDLC_1;

	outl(idx, cs->hw.avm.cfg_reg + 4);
	outl(value, cs->hw.avm.isac + offset);
}

static inline u_char
ReadHDLCPnP(struct IsdnCardState *cs, int chan, u_char offset)
{
	register u_char idx = chan ? AVM_HDLC_2 : AVM_HDLC_1;
	register u_char val;

	outb(idx, cs->hw.avm.cfg_reg + 4);
	val = inb(cs->hw.avm.isac + offset);
	return (val);
}

static inline void
WriteHDLCPnP(struct IsdnCardState *cs, int chan, u_char offset, u_char value)
{
	register u_char idx = chan ? AVM_HDLC_2 : AVM_HDLC_1;

	outb(idx, cs->hw.avm.cfg_reg + 4);
	outb(value, cs->hw.avm.isac + offset);
}

static u_char
ReadHDLC_s(struct IsdnCardState *cs, int chan, u_char offset)
{
	return(0xff & ReadHDLCPCI(cs, chan, offset));
}

static void
WriteHDLC_s(struct IsdnCardState *cs, int chan, u_char offset, u_char value)
{
	WriteHDLCPCI(cs, chan, offset, value);
}

static inline
struct BCState *Sel_BCS(struct IsdnCardState *cs, int channel)
{
	if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
		return(&cs->bcs[0]);
	else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
		return(&cs->bcs[1]);
	else
		return(