# teles3.c

    /* $Id$

     * teles3.c     low level stuff for Teles 16.3 & PNP isdn cards
     *
     *              based on the teles driver from Jan den Ouden
     *
     * Author       Karsten Keil (keil@temic-ech.spacenet.de)
     *
     * Thanks to    Jan den Ouden
     *              Fritz Elfert
     *              Beat Doebeli
     *
     * $Log$
     * Revision 2.8  1998/04/15 16:44:30  keil
     * new init code
     *
     * Revision 2.7  1998/02/02 13:29:48  keil
     * fast io
     *
     * Revision 2.6  1997/11/13 16:22:44  keil
     * COMPAQ_ISA reset
     *
     * Revision 2.5  1997/11/12 15:01:25  keil
     * COMPAQ_ISA changes
     *
     * Revision 2.4  1997/11/08 21:35:56  keil
     * new l1 init
     *
     * Revision 2.3  1997/11/06 17:09:33  keil
     * New 2.1 init code
     *
     * Revision 2.2  1997/10/29 18:55:59  keil
     * changes for 2.1.60 (irq2dev_map)
     *
     * Revision 2.1  1997/07/27 21:47:12  keil
     * new interface structures
     *
     * Revision 2.0  1997/06/26 11:02:46  keil
     * New Layer and card interface
     *
     * Revision 1.11  1997/04/13 19:54:05  keil
     * Change in IRQ check delay for SMP
     *
     * Revision 1.10  1997/04/06 22:54:05  keil
     * Using SKB's
     *
     * Revision 1.9  1997/03/22 02:01:07  fritz
     * -Reworked toplevel Makefile. From now on, no different Makefiles
     *  for standalone- and in-kernel-compilation are needed any more.
     * -Added local Rules.make for above reason.
     * -Experimental changes in teles3.c for enhanced IRQ-checking with
     *  2.1.X and SMP kernels.
     * -Removed diffstd-script, same functionality is in stddiff -r.
     * -Enhanced scripts std2kern and stddiff.
     *
     * Revision 1.8  1997/02/23 18:43:55  fritz
     * Added support for Teles-Vision.
     *
     * Revision 1.7  1997/01/28 22:48:33  keil
     * fixes for Teles PCMCIA (Christof Petig)
     *
     * Revision 1.6  1997/01/27 15:52:55  keil
     * SMP proof,cosmetics, PCMCIA added
     *
     * removed old log info /KKe
     *
     */
    #define __NO_VERSION__
    #include "hisax.h"
    #include "isac.h"
    #include "hscx.h"
    #include "isdnl1.h"

    extern const char *CardType[];
    const char *teles3_revision = "$Revision$";

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

    static inline u_char
    readreg(unsigned int adr, u_char off)
    {
    	return (bytein(adr + off));
    }

    static inline void
    writereg(unsigned int adr, u_char off, u_char data)
    {
    	byteout(adr + off, data);
    }

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

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

    /* Interface functions */

    static u_char
    ReadISAC(struct IsdnCardState *cs, u_char offset)
    {
    	return (readreg(cs->hw.teles3.isac, offset));
    }

    static void
    WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
    {
    	writereg(cs->hw.teles3.isac, offset, value);
    }

    static void
    ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
    {
    	read_fifo(cs->hw.teles3.isacfifo, data, size);
    }

    static void
    WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
    {
    	write_fifo(cs->hw.teles3.isacfifo, data, size);
    }

    static u_char
    ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
    {
    	return (readreg(cs->hw.teles3.hscx[hscx], offset));
    }

    static void
    WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
    {
    	writereg(cs->hw.teles3.hscx[hscx], offset, value);
    }

    /*
     * fast interrupt HSCX stuff goes here
     */

    #define READHSCX(cs, nr, reg) readreg(cs->hw.teles3.hscx[nr], reg)
    #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.teles3.hscx[nr], reg, data)
    #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.teles3.hscxfifo[nr], ptr, cnt)
    #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.teles3.hscxfifo[nr], ptr, cnt)

    #include "hscx_irq.c"

    static void
    teles3_interrupt(int intno, void *dev_id, struct pt_regs *regs)
    {
    #define MAXCOUNT 20
    	struct IsdnCardState *cs = dev_id;
    	u_char val, stat = 0;
    	int count = 0;

    	if (!cs) {
    		printk(KERN_WARNING "Teles: Spurious interrupt!\n");
    		return;
    	}
    	val = readreg(cs->hw.teles3.hscx[1], HSCX_ISTA);
          Start_HSCX:
    	if (val) {
    		hscx_int_main(cs, val);
    		stat |= 1;
    	}
    	val = readreg(cs->hw.teles3.isac, ISAC_ISTA);
          Start_ISAC:
    	if (val) {
    		isac_interrupt(cs, val);
    		stat |= 2;
    	}
    	count++;
    	val = readreg(cs->hw.teles3.hscx[1], HSCX_ISTA);
    	if (val && count < MAXCOUNT) {
    		if (cs->debug & L1_DEB_HSCX)
    			debugl1(cs, "HSCX IntStat after IntRoutine");
    		goto Start_HSCX;
    	}
    	val = readreg(cs->hw.teles3.isac, ISAC_ISTA);
    	if (val && count < MAXCOUNT) {
    		if (cs->debug & L1_DEB_ISAC)
    			debugl1(cs, "ISAC IntStat after IntRoutine");
    		goto Start_ISAC;
    	}
    	if (count >= MAXCOUNT)
    		printk(KERN_WARNING "Teles3: more than %d loops in teles3_interrupt\n", count);
    	if (stat & 1) {
    		writereg(cs->hw.teles3.hscx[0], HSCX_MASK, 0xFF);
    		writereg(cs->hw.teles3.hscx[1], HSCX_MASK, 0xFF);
    		writereg(cs->hw.teles3.hscx[0], HSCX_MASK, 0x0);
    		writereg(cs->hw.teles3.hscx[1], HSCX_MASK, 0x0);
    	}
    	if (stat & 2) {
    		writereg(cs->hw.teles3.isac, ISAC_MASK, 0xFF);
    		writereg(cs->hw.teles3.isac, ISAC_MASK, 0x0);
    	}
    }

    inline static void
    release_ioregs(struct IsdnCardState *cs, int mask)
    {
    	if (mask & 1)
    		release_region(cs->hw.teles3.isac + 32, 32);
    	if (mask & 2)
    		release_region(cs->hw.teles3.hscx[0] + 32, 32);
    	if (mask & 4)
    		release_region(cs->hw.teles3.hscx[1] + 32, 32);
    }

    void
    release_io_teles3(struct IsdnCardState *cs)
    {
    	if (cs->typ == ISDN_CTYPE_TELESPCMCIA)
    		release_region(cs->hw.teles3.cfg_reg, 97);
    	else {
    		if (cs->hw.teles3.cfg_reg)
    			if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
    				release_region(cs->hw.teles3.cfg_reg, 1);
    			} else {
    				release_region(cs->hw.teles3.cfg_reg, 8);
    			}
    		release_ioregs(cs, 0x7);
    	}
    }

    static int
    reset_teles3(struct IsdnCardState *cs)
    {
    	long flags;
    	u_char irqcfg;

    	if (cs->typ != ISDN_CTYPE_TELESPCMCIA) {
    		if ((cs->hw.teles3.cfg_reg) && (cs->typ != ISDN_CTYPE_COMPAQ_ISA)) {
    			switch (cs->irq) {
    				case 2:
    				case 9:
    					irqcfg = 0x00;
    					break;
    				case 3:
    					irqcfg = 0x02;
    					break;
    				case 4:
    					irqcfg = 0x04;
    					break;
    				case 5:
    					irqcfg = 0x06;
    					break;
    				case 10:
    					irqcfg = 0x08;
    					break;
    				case 11:
    					irqcfg = 0x0A;
    					break;
    				case 12:
    					irqcfg = 0x0C;
    					break;
    				case 15:
    					irqcfg = 0x0E;
    					break;
    				default:
    					return(1);
    			}
    			save_flags(flags);
    			byteout(cs->hw.teles3.cfg_reg + 4, irqcfg);
    			sti();
    			HZDELAY(HZ / 10 + 1);
    			byteout(cs->hw.teles3.cfg_reg + 4, irqcfg | 1);
    			HZDELAY(HZ / 10 + 1);
    			restore_flags(flags);
    		} else if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
    			save_flags(flags);
    			byteout(cs->hw.teles3.cfg_reg, 0xff);
    			HZDELAY(2);
    			byteout(cs->hw.teles3.cfg_reg, 0x00);
    			HZDELAY(2);
    			restore_flags(flags);
    		} else {
    			/* Reset off for 16.3 PnP , thanks to Georg Acher */
    			save_flags(flags);
    			byteout(cs->hw.teles3.isac + 0x3c, 0);
    			HZDELAY(2);
    			byteout(cs->hw.teles3.isac + 0x3c, 1);
    			HZDELAY(2);
    			restore_flags(flags);
    		}
    	}
    	return(0);
    }

    static int
    Teles_card_msg(struct IsdnCardState *cs, int mt, void *arg)
    {
    	switch (mt) {
    		case CARD_RESET:
    			reset_teles3(cs);
    			return(0);
    		case CARD_RELEASE:
    			release_io_teles3(cs);
    			return(0);
    		case CARD_SETIRQ:
    			return(request_irq(cs->irq, &teles3_interrupt,
    					I4L_IRQ_FLAG, "HiSax", cs));
    		case CARD_INIT:
    			inithscxisac(cs, 3);
    			return(0);
    		case CARD_TEST:
    			return(0);
    	}
    	return(0);
    }

    __initfunc(int
    setup_teles3(struct IsdnCard *card))
    {
    	u_char val;
    	struct IsdnCardState *cs = card->cs;
    	char tmp[64];

    	strcpy(tmp, teles3_revision);
    	printk(KERN_INFO "HiSax: Teles IO driver Rev. %s\n", HiSax_getrev(tmp));
    	if ((cs->typ != ISDN_CTYPE_16_3) && (cs->typ != ISDN_CTYPE_PNP)
    	    && (cs->typ != ISDN_CTYPE_TELESPCMCIA) && (cs->typ != ISDN_CTYPE_COMPAQ_ISA))
    		return (0);

    	if (cs->typ == ISDN_CTYPE_16_3) {
    		cs->hw.teles3.cfg_reg = card->para[1];
    		switch (cs->hw.teles3.cfg_reg) {
    			case 0x180:
    			case 0x280:
    			case 0x380:
    				cs->hw.teles3.cfg_reg |= 0xc00;
    				break;
    		}
    		cs->hw.teles3.isac = cs->hw.teles3.cfg_reg - 0x420;
    		cs->hw.teles3.hscx[0] = cs->hw.teles3.cfg_reg - 0xc20;
    		cs->hw.teles3.hscx[1] = cs->hw.teles3.cfg_reg - 0x820;
    	} else if (cs->typ == ISDN_CTYPE_TELESPCMCIA) {
    		cs->hw.teles3.cfg_reg = card->para[1];
    		cs->hw.teles3.hscx[0] = card->para[1] - 0x20;
    		cs->hw.teles3.hscx[1] = card->para[1];
    		cs->hw.teles3.isac = card->para[1] + 0x20;
    	} else if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
    		cs->hw.teles3.cfg_reg = card->para[3];
    		cs->hw.teles3.isac = card->para[2] - 32;
    		cs->hw.teles3.hscx[0] = card->para[1] - 32;
    		cs->hw.teles3.hscx[1] = card->para[1];
    	} else {	/* PNP */
    		cs->hw.teles3.cfg_reg = 0;
    		cs->hw.teles3.isac = card->para[1] - 32;
    		cs->hw.teles3.hscx[0] = card->para[2] - 32;
    		cs->hw.teles3.hscx[1] = card->para[2];
    	}
    	cs->irq = card->para[0];
    	cs->hw.teles3.isacfifo = cs->hw.teles3.isac + 0x3e;
    	cs->hw.teles3.hscxfifo[0] = cs->hw.teles3.hscx[0] + 0x3e;
    	cs->hw.teles3.hscxfifo[1] = cs->hw.teles3.hscx[1] + 0x3e;
    	if (cs->typ == ISDN_CTYPE_TELESPCMCIA) {
    		if (check_region((cs->hw.teles3.cfg_reg), 97)) {
    			printk(KERN_WARNING
    			       "HiSax: %s ports %x-%x already in use\n",
    			       CardType[cs->typ],
    			       cs->hw.teles3.cfg_reg,
    			       cs->hw.teles3.cfg_reg + 96);
    			return (0);
    		} else
    			request_region(cs->hw.teles3.hscx[0], 97, "HiSax Teles PCMCIA");
    	} else {
    		if (cs->hw.teles3.cfg_reg) {
    			if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
    				if (check_region((cs->hw.teles3.cfg_reg), 1)) {
    					printk(KERN_WARNING
    						"HiSax: %s config port %x already in use\n",
    						CardType[card->typ],
    						cs->hw.teles3.cfg_reg);
    					return (0);
    				} else
    					request_region(cs->hw.teles3.cfg_reg, 1, "teles3 cfg");
    			} else {
    				if (check_region((cs->hw.teles3.cfg_reg), 8)) {
    					printk(KERN_WARNING
    					       "HiSax: %s config port %x-%x already in use\n",
    					       CardType[card->typ],
    					       cs->hw.teles3.cfg_reg,
    						cs->hw.teles3.cfg_reg + 8);
    					return (0);
    				} else
    					request_region(cs->hw.teles3.cfg_reg, 8, "teles3 cfg");
    			}
    		}
    		if (check_region((cs->hw.teles3.isac + 32), 32)) {
    			printk(KERN_WARNING
    			   "HiSax: %s isac ports %x-%x already in use\n",
    			       CardType[cs->typ],
    			       cs->hw.teles3.isac + 32,
    			       cs->hw.teles3.isac + 64);
    			if (cs->hw.teles3.cfg_reg)
    				if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
    					release_region(cs->hw.teles3.cfg_reg, 1);
    				} else {
    					release_region(cs->hw.teles3.cfg_reg, 8);
    				}
    			return (0);
    		} else
    			request_region(cs->hw.teles3.isac + 32, 32, "HiSax isac");
    		if (check_region((cs->hw.teles3.hscx[0] + 32), 32)) {
    			printk(KERN_WARNING
    			 "HiSax: %s hscx A ports %x-%x already in use\n",
    			       CardType[cs->typ],
    			       cs->hw.teles3.hscx[0] + 32,
    			       cs->hw.teles3.hscx[0] + 64);
    			if (cs->hw.teles3.cfg_reg)
    				if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
    					release_region(cs->hw.teles3.cfg_reg, 1);
    				} else {
    					release_region(cs->hw.teles3.cfg_reg, 8);
    				}
    			release_ioregs(cs, 1);
    			return (0);
    		} else
    			request_region(cs->hw.teles3.hscx[0] + 32, 32, "HiSax hscx A");
    		if (check_region((cs->hw.teles3.hscx[1] + 32), 32)) {
    			printk(KERN_WARNING
    			 "HiSax: %s hscx B ports %x-%x already in use\n",
    			       CardType[cs->typ],
    			       cs->hw.teles3.hscx[1] + 32,
    			       cs->hw.teles3.hscx[1] + 64);
    			if (cs->hw.teles3.cfg_reg)
    				if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
    					release_region(cs->hw.teles3.cfg_reg, 1);
    				} else {
    					release_region(cs->hw.teles3.cfg_reg, 8);
    				}
    			release_ioregs(cs, 3);
    			return (0);
    		} else
    			request_region(cs->hw.teles3.hscx[1] + 32, 32, "HiSax hscx B");
    	}
    	if ((cs->hw.teles3.cfg_reg) && (cs->typ != ISDN_CTYPE_COMPAQ_ISA)) {
    		if ((val = bytein(cs->hw.teles3.cfg_reg + 0)) != 0x51) {
    			printk(KERN_WARNING "Teles: 16.3 Byte at %x is %x\n",
    			       cs->hw.teles3.cfg_reg + 0, val);
    			release_io_teles3(cs);
    			return (0);
    		}
    		if ((val = bytein(cs->hw.teles3.cfg_reg + 1)) != 0x93) {
    			printk(KERN_WARNING "Teles: 16.3 Byte at %x is %x\n",
    			       cs->hw.teles3.cfg_reg + 1, val);
    			release_io_teles3(cs);
    			return (0);
    		}
    		val = bytein(cs->hw.teles3.cfg_reg + 2);/* 0x1e=without AB
    							 * 0x1f=with AB
    							 * 0x1c 16.3 ???
    							 * 0x39 16.3 1.1
    							 * 0x46 16.3 with AB + Video (Teles-Vision)
    							 */
    		if (val != 0x46 && val != 0x39 && val != 0x1c && val != 0x1e && val != 0x1f) {
    			printk(KERN_WARNING "Teles: 16.3 Byte at %x is %x\n",
    			       cs->hw.teles3.cfg_reg + 2, val);
    			release_io_teles3(cs);
    			return (0);
    		}
    	}
    	printk(KERN_INFO
    	       "HiSax: %s config irq:%d isac:0x%X  cfg:0x%X\n",
    	       CardType[cs->typ], cs->irq,
    	       cs->hw.teles3.isac + 32, cs->hw.teles3.cfg_reg);
    	printk(KERN_INFO
    	       "HiSax: hscx A:0x%X  hscx B:0x%X\n",
    	       cs->hw.teles3.hscx[0] + 32, cs->hw.teles3.hscx[1] + 32);

    	if (reset_teles3(cs)) {
    		printk(KERN_WARNING "Teles3: wrong IRQ\n");
    		release_io_teles3(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 = &Teles_card_msg;
    	ISACVersion(cs, "Teles3:");
    	if (HscxVersion(cs, "Teles3:")) {
    		printk(KERN_WARNING
    		       "Teles3: wrong HSCX versions check IO address\n");
    		release_io_teles3(cs);
    		return (0);
    	}
    	return (1);
    }