sedlbauer.c

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/* $Id: sedlbauer.c,v 1.25.6.2 2000/11/29 17:48:59 kai Exp $
 *
 * sedlbauer.c  low level stuff for Sedlbauer cards
 *              includes support for the Sedlbauer speed star (speed star II),
 *              support for the Sedlbauer speed fax+,
 *              support for the Sedlbauer ISDN-Controller PC/104 and
 *              support for the Sedlbauer speed pci
 *              derived from the original file asuscom.c from Karsten Keil
 *
 * Copyright (C) 1997,1998 Marcus Niemann (for the modifications to
 *                                         the original file asuscom.c)
 *
 * Author     Marcus Niemann ([e-mail])
 *
 * Thanks to  Karsten Keil
 *            Sedlbauer AG for informations
 *            Edgar Toernig
 *
 * This file is (c) under GNU PUBLIC LICENSE
 *
 */

/* Supported cards:
 * Card:	Chip:		Configuration:	Comment:
 * ---------------------------------------------------------------------
 * Speed Card	ISAC_HSCX	DIP-SWITCH
 * Speed Win	ISAC_HSCX	ISAPNP
 * Speed Fax+	ISAC_ISAR	ISAPNP		Full analog support
 * Speed Star	ISAC_HSCX	CARDMGR
 * Speed Win2	IPAC		ISAPNP
 * ISDN PC/104	IPAC		DIP-SWITCH
 * Speed Star2	IPAC		CARDMGR
 * Speed PCI	IPAC		PCI PNP		
 * Speed Fax+ 	ISAC_ISAR	PCI PNP		Full analog support
 *
 * Important:
 * For the sedlbauer speed fax+ to work properly you have to download 
 * the firmware onto the card.
 * For example: hisaxctrl <DriverID> 9 ISAR.BIN
*/

#define __NO_VERSION__
#include <linux/init.h>
#include <linux/config.h>
#include "hisax.h"
#include "isac.h"
#include "ipac.h"
#include "hscx.h"
#include "isar.h"
#include "isdnl1.h"
#include <linux/pci.h>

extern const char *CardType[];

const char *Sedlbauer_revision = "$Revision: 1.25.6.2 $";

const char *Sedlbauer_Types[] =
	{"None", "speed card/win", "speed star", "speed fax+", 
	"speed win II / ISDN PC/104", "speed star II", "speed pci",
	"speed fax+ pyramid", "speed fax+ pci"};

#define PCI_SUBVENDOR_SPEEDFAX_PYRAMID	0x51
#define PCI_SUBVENDOR_SEDLBAUER_PCI	0x53
#define PCI_SUBVENDOR_SPEEDFAX_PCI	0x54
#define PCI_SUB_ID_SEDLBAUER		0x01
 
#define SEDL_SPEED_CARD_WIN	1
#define SEDL_SPEED_STAR 	2
#define SEDL_SPEED_FAX		3
#define SEDL_SPEED_WIN2_PC104 	4
#define SEDL_SPEED_STAR2 	5
#define SEDL_SPEED_PCI   	6
#define SEDL_SPEEDFAX_PYRAMID	7
#define SEDL_SPEEDFAX_PCI	8

#define SEDL_CHIP_TEST		0
#define SEDL_CHIP_ISAC_HSCX	1
#define SEDL_CHIP_ISAC_ISAR	2
#define SEDL_CHIP_IPAC		3

#define SEDL_BUS_ISA		1
#define SEDL_BUS_PCI		2
#define	SEDL_BUS_PCMCIA		3

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

#define SEDL_HSCX_ISA_RESET_ON	0
#define SEDL_HSCX_ISA_RESET_OFF	1
#define SEDL_HSCX_ISA_ISAC	2
#define SEDL_HSCX_ISA_HSCX	3
#define SEDL_HSCX_ISA_ADR	4

#define SEDL_HSCX_PCMCIA_RESET	0
#define SEDL_HSCX_PCMCIA_ISAC	1
#define SEDL_HSCX_PCMCIA_HSCX	2
#define SEDL_HSCX_PCMCIA_ADR	4

#define SEDL_ISAR_ISA_ISAC		4
#define SEDL_ISAR_ISA_ISAR		6
#define SEDL_ISAR_ISA_ADR		8
#define SEDL_ISAR_ISA_ISAR_RESET_ON	10
#define SEDL_ISAR_ISA_ISAR_RESET_OFF	12

#define SEDL_IPAC_ANY_ADR		0
#define SEDL_IPAC_ANY_IPAC		2

#define SEDL_IPAC_PCI_BASE		0
#define SEDL_IPAC_PCI_ADR		0xc0
#define SEDL_IPAC_PCI_IPAC		0xc8
#define SEDL_ISAR_PCI_ADR		0xc8
#define SEDL_ISAR_PCI_ISAC		0xd0
#define SEDL_ISAR_PCI_ISAR		0xe0
#define SEDL_ISAR_PCI_ISAR_RESET_ON	0x01
#define SEDL_ISAR_PCI_ISAR_RESET_OFF	0x18
#define SEDL_ISAR_PCI_LED1		0x08
#define SEDL_ISAR_PCI_LED2		0x10

#define SEDL_RESET      0x3	/* same as DOS driver */

static inline u_char
readreg(unsigned int ale, unsigned int adr, u_char off)
{
	register u_char ret;
	long flags;

	save_flags(flags);
	cli();
	byteout(ale, off);
	ret = bytein(adr);
	restore_flags(flags);
	return (ret);
}

static inline void
readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
{
	/* fifo read without cli because it's allready done  */

	byteout(ale, off);
	insb(adr, data, size);
}


static inline void
writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
{
	long flags;

	save_flags(flags);
	cli();
	byteout(ale, off);
	byteout(adr, data);
	restore_flags(flags);
}

static inline void
writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
{
	/* fifo write without cli because it's allready done  */
	byteout(ale, off);
	outsb(adr, data, size);
}

/* Interface functions */

static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
	return (readreg(cs->hw.sedl.adr, cs->hw.sedl.isac, offset));
}

static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
	writereg(cs->hw.sedl.adr, cs->hw.sedl.isac, offset, value);
}

static void
ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
	readfifo(cs->hw.sedl.adr, cs->hw.sedl.isac, 0, data, size);
}

static void
WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
	writefifo(cs->hw.sedl.adr, cs->hw.sedl.isac, 0, data, size);
}

static u_char
ReadISAC_IPAC(struct IsdnCardState *cs, u_char offset)
{
	return (readreg(cs->hw.sedl.adr, cs->hw.sedl.isac, offset|0x80));
}

static void
WriteISAC_IPAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
	writereg(cs->hw.sedl.adr, cs->hw.sedl.isac, offset|0x80, value);
}

static void
ReadISACfifo_IPAC(struct IsdnCardState *cs, u_char * data, int size)
{
	readfifo(cs->hw.sedl.adr, cs->hw.sedl.isac, 0x80, data, size);
}

static void
WriteISACfifo_IPAC(struct IsdnCardState *cs, u_char * data, int size)
{
	writefifo(cs->hw.sedl.adr, cs->hw.sedl.isac, 0x80, data, size);
}

static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
	return (readreg(cs->hw.sedl.adr,
			cs->hw.sedl.hscx, offset + (hscx ? 0x40 : 0)));
}

static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
	writereg(cs->hw.sedl.adr,
		 cs->hw.sedl.hscx, offset + (hscx ? 0x40 : 0), value);
}

/* ISAR access routines
 * mode = 0 access with IRQ on
 * mode = 1 access with IRQ off
 * mode = 2 access with IRQ off and using last offset
 */
  
static u_char
ReadISAR(struct IsdnCardState *cs, int mode, u_char offset)
{	
	if (mode == 0)
		return (readreg(cs->hw.sedl.adr, cs->hw.sedl.hscx, offset));
	else if (mode == 1)
		byteout(cs->hw.sedl.adr, offset);
	return(bytein(cs->hw.sedl.hscx));
}

static void
WriteISAR(struct IsdnCardState *cs, int mode, u_char offset, u_char value)
{
	if (mode == 0)
		writereg(cs->hw.sedl.adr, cs->hw.sedl.hscx, offset, value);
	else {
		if (mode == 1)
			byteout(cs->hw.sedl.adr, offset);
		byteout(cs->hw.sedl.hscx, value);
	}
}

/*
 * fast interrupt HSCX stuff goes here
 */

#define READHSCX(cs, nr, reg) readreg(cs->hw.sedl.adr, \
		cs->hw.sedl.hscx, reg + (nr ? 0x40 : 0))
#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.sedl.adr, \
		cs->hw.sedl.hscx, reg + (nr ? 0x40 : 0), data)

#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.sedl.adr, \
		cs->hw.sedl.hscx, (nr ? 0x40 : 0), ptr, cnt)

#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.sedl.adr, \
		cs->hw.sedl.hscx, (nr ? 0x40 : 0), ptr, cnt)

#include "hscx_irq.c"

static void
sedlbauer_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
	struct IsdnCardState *cs = dev_id;
	u_char val;

	if (!cs) {
		printk(KERN_WARNING "Sedlbauer: Spurious interrupt!\n");
		return;
	}

	if ((cs->hw.sedl.bus == SEDL_BUS_PCMCIA) && (*cs->busy_flag == 1)) {
		/* The card tends to generate interrupts while being removed
		   causing us to just crash the kernel. bad. */
		printk(KERN_WARNING "Sedlbauer: card not available!\n");
		return;
        }

	val = readreg(cs->hw.sedl.adr, cs->hw.sedl.hscx, HSCX_ISTA + 0x40);
      Start_HSCX:
	if (val)
		hscx_int_main(cs, val);
	val = readreg(cs->hw.sedl.adr, cs->hw.sedl.isac, ISAC_ISTA);
      Start_ISAC:
	if (val)
		isac_interrupt(cs, val);
	val = readreg(cs->hw.sedl.adr, cs->hw.sedl.hscx, HSCX_ISTA + 0x40);
	if (val) {
		if (cs->debug & L1_DEB_HSCX)
			debugl1(cs, "HSCX IntStat after IntRoutine");
		goto Start_HSCX;
	}
	val = readreg(cs->hw.sedl.adr, cs->hw.sedl.isac, ISAC_ISTA);
	if (val) {
		if (cs->debug & L1_DEB_ISAC)
			debugl1(cs, "ISAC IntStat after IntRoutine");
		goto Start_ISAC;
	}
	writereg(cs->hw.sedl.adr, cs->hw.sedl.hscx, HSCX_MASK, 0xFF);
	writereg(cs->hw.sedl.adr, cs->hw.sedl.hscx, HSCX_MASK + 0x40, 0xFF);
	writereg(cs->hw.sedl.adr, cs->hw.sedl.isac, ISAC_MASK, 0xFF);
	writereg(cs->hw.sedl.adr, cs->hw.sedl.isac, ISAC_MASK, 0x0);
	writereg(cs->hw.sedl.adr, cs->hw.sedl.hscx, HSCX_MASK, 0x0);
	writereg(cs->hw.sedl.adr, cs->hw.sedl.hscx, HSCX_MASK + 0x40, 0x0);
}

static void
sedlbauer_interrupt_ipac(int intno, void *dev_id, struct pt_regs *regs)
{
	struct IsdnCardState *cs = dev_id;
	u_char ista, val, icnt = 5;

	if (!cs) {
		printk(KERN_WARNING "Sedlbauer: Spurious interrupt!\n");
		return;
	}
	ista = readreg(cs->hw.sedl.adr, cs->hw.sedl.isac, IPAC_ISTA);
Start_IPAC:
	if (cs->debug & L1_DEB_IPAC)
		debugl1(cs, "IPAC ISTA %02X", ista);
	if (ista & 0x0f) {
		val = readreg(cs->hw.sedl.adr, cs->hw.sedl.hscx, HSCX_ISTA + 0x40);
		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 & readreg(cs->hw.sedl.adr, cs->hw.sedl.isac, ISAC_ISTA | 0x80);
		if (val) {
			isac_interrupt(cs, val);
		}
	}
	if (ista & 0x10) {
		val = 0x01;
		isac_interrupt(cs, val);
	}
	ista  = readreg(cs->hw.sedl.adr, cs->hw.sedl.isac, IPAC_ISTA);
	if ((ista & 0x3f) && icnt) {
		icnt--;
		goto Start_IPAC;
	}
	if (!icnt)
		if (cs->debug & L1_DEB_ISAC)
			debugl1(cs, "Sedlbauer IRQ LOOP");
	writereg(cs->hw.sedl.adr, cs->hw.sedl.isac, IPAC_MASK, 0xFF);
	writereg(cs->hw.sedl.adr, cs->hw.sedl.isac, IPAC_MASK, 0xC0);
}

static void
sedlbauer_interrupt_isar(int intno, void *dev_id, struct pt_regs *regs)
{
	struct IsdnCardState *cs = dev_id;
	u_char val;
	int cnt = 5;

	if (!cs) {
		printk(KERN_WARNING "Sedlbauer: Spurious interrupt!\n");
		return;
	}

	val = readreg(cs->hw.sedl.adr, cs->hw.sedl.hscx, ISAR_IRQBIT);
      Start_ISAR:
	if (val & ISAR_IRQSTA)
		isar_int_main(cs);
	val = readreg(cs->hw.sedl.adr, cs->hw.sedl.isac, ISAC_ISTA);
      Start_ISAC:
	if (val)
		isac_interrupt(cs, val);
	val = readreg(cs->hw.sedl.adr, cs->hw.sedl.hscx, ISAR_IRQBIT);
	if ((val & ISAR_IRQSTA) && --cnt) {
		if (cs->debug & L1_DEB_HSCX)
			debugl1(cs, "ISAR IntStat after IntRoutine");
		goto Start_ISAR;