# teles0.c

    /* $Id$

     * teles0.c     low level stuff for Teles Memory IO 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 16:44:28  keil
     * new init code
     *
     * Revision 2.7  1998/03/07 22:57:08  tsbogend
     * made HiSax working on Linux/Alpha
     *
     * Revision 2.6  1998/02/03 23:27:47  keil
     * IRQ 9
     *
     * Revision 2.5  1998/02/02 13:29:47  keil
     * fast io
     *
     * Revision 2.4  1997/11/08 21:35:54  keil
     * new l1 init
     *
     * Revision 2.3  1997/11/06 17:09:31  keil
     * New 2.1 init code
     *
     * Revision 2.2  1997/10/29 18:55:57  keil
     * changes for 2.1.60 (irq2dev_map)
     *
     * Revision 2.1  1997/07/27 21:47:10  keil
     * new interface structures
     *
     * Revision 2.0  1997/06/26 11:02:43  keil
     * New Layer and card interface
     *
     * Revision 1.8  1997/04/13 19:54:04  keil
     * Change in IRQ check delay for SMP
     *
     * Revision 1.7  1997/04/06 22:54:04  keil
     * Using SKB's
     *
     * removed old log info /KKe
     *
     */
    #define __NO_VERSION__
    #include "hisax.h"
    #include "isdnl1.h"
    #include "isac.h"
    #include "hscx.h"

    extern const char *CardType[];

    const char *teles0_revision = "$Revision$";

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

    static inline u_char
    readisac(unsigned int adr, u_char off)
    {
    	return readb(adr + ((off & 1) ? 0x2ff : 0x100) + off);
    }

    static inline void
    writeisac(unsigned int adr, u_char off, u_char data)
    {
    	writeb(data, adr + ((off & 1) ? 0x2ff : 0x100) + off); mb();
    }

    static inline u_char
    readhscx(unsigned int adr, int hscx, u_char off)
    {
    	return readb(adr + (hscx ? 0x1c0 : 0x180) +
    		     ((off & 1) ? 0x1ff : 0) + off);
    }

    static inline void
    writehscx(unsigned int adr, int hscx, u_char off, u_char data)
    {
    	writeb(data, adr + (hscx ? 0x1c0 : 0x180) +
    	       ((off & 1) ? 0x1ff : 0) + off); mb();
    }

    static inline void
    read_fifo_isac(unsigned int adr, u_char * data, int size)
    {
    	register int i;
    	register u_char *ad = (u_char *) ((long)adr + 0x100);
    	for (i = 0; i < size; i++)
    		data[i] = readb(ad);
    }

    static inline void
    write_fifo_isac(unsigned int adr, u_char * data, int size)
    {
    	register int i;
    	register u_char *ad = (u_char *) ((long)adr + 0x100);
    	for (i = 0; i < size; i++) {
    		writeb(data[i], ad); mb();
    	}
    }

    static inline void
    read_fifo_hscx(unsigned int adr, int hscx, u_char * data, int size)
    {
    	register int i;
    	register u_char *ad = (u_char *) ((long)adr + (hscx ? 0x1c0 : 0x180));
    	for (i = 0; i < size; i++)
    		data[i] = readb(ad);
    }

    static inline void
    write_fifo_hscx(unsigned int adr, int hscx, u_char * data, int size)
    {
    	int i;
    	register u_char *ad = (u_char *) ((long)adr + (hscx ? 0x1c0 : 0x180));
    	for (i = 0; i < size; i++) {
    		writeb(data[i], ad); mb();
    	}
    }

    /* Interface functions */

    static u_char
    ReadISAC(struct IsdnCardState *cs, u_char offset)
    {
    	return (readisac(cs->hw.teles0.membase, offset));
    }

    static void
    WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
    {
    	writeisac(cs->hw.teles0.membase, offset, value);
    }

    static void
    ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
    {
    	read_fifo_isac(cs->hw.teles0.membase, data, size);
    }

    static void
    WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
    {
    	write_fifo_isac(cs->hw.teles0.membase, data, size);
    }

    static u_char
    ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
    {
    	return (readhscx(cs->hw.teles0.membase, hscx, offset));
    }

    static void
    WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
    {
    	writehscx(cs->hw.teles0.membase, hscx, offset, value);
    }

    /*
     * fast interrupt HSCX stuff goes here
     */

    #define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
    #define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
    #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
    #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)

    #include "hscx_irq.c"

    static void
    teles0_interrupt(int intno, void *dev_id, struct pt_regs *regs)
    {
    	struct IsdnCardState *cs = dev_id;
    	u_char val, stat = 0;
    	int count = 0;

    	if (!cs) {
    		printk(KERN_WARNING "Teles0: Spurious interrupt!\n");
    		return;
    	}
    	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
          Start_HSCX:
    	if (val) {
    		hscx_int_main(cs, val);
    		stat |= 1;
    	}
    	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
          Start_ISAC:
    	if (val) {
    		isac_interrupt(cs, val);
    		stat |= 2;
    	}
    	count++;
    	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
    	if (val && count < 20) {
    		if (cs->debug & L1_DEB_HSCX)
    			debugl1(cs, "HSCX IntStat after IntRoutine");
    		goto Start_HSCX;
    	}
    	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
    	if (val && count < 20) {
    		if (cs->debug & L1_DEB_ISAC)
    			debugl1(cs, "ISAC IntStat after IntRoutine");
    		goto Start_ISAC;
    	}
    	if (stat & 1) {
    		writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
    		writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
    		writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
    		writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
    	}
    	if (stat & 2) {
    		writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
    		writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
    	}
    }

    void
    release_io_teles0(struct IsdnCardState *cs)
    {
    	if (cs->hw.teles0.cfg_reg)
    		release_region(cs->hw.teles0.cfg_reg, 8);
    }

    static int
    reset_teles0(struct IsdnCardState *cs)
    {
    	u_char cfval;
    	long flags;

    	save_flags(flags);
    	sti();
    	if (cs->hw.teles0.cfg_reg) {
    		switch (cs->irq) {
    			case 2:
    			case 9:
    				cfval = 0x00;
    				break;
    			case 3:
    				cfval = 0x02;
    				break;
    			case 4:
    				cfval = 0x04;
    				break;
    			case 5:
    				cfval = 0x06;
    				break;
    			case 10:
    				cfval = 0x08;
    				break;
    			case 11:
    				cfval = 0x0A;
    				break;
    			case 12:
    				cfval = 0x0C;
    				break;
    			case 15:
    				cfval = 0x0E;
    				break;
    			default:
    				return(1);
    		}
    		cfval |= ((cs->hw.teles0.membase >> 9) & 0xF0);
    		byteout(cs->hw.teles0.cfg_reg + 4, cfval);
    		HZDELAY(HZ / 10 + 1);
    		byteout(cs->hw.teles0.cfg_reg + 4, cfval | 1);
    		HZDELAY(HZ / 10 + 1);
    	}
    	writeb(0, cs->hw.teles0.membase + 0x80); mb();
    	HZDELAY(HZ / 5 + 1);
    	writeb(1, cs->hw.teles0.membase + 0x80); mb();
    	HZDELAY(HZ / 5 + 1);
    	restore_flags(flags);
    	return(0);
    }

    static int
    Teles_card_msg(struct IsdnCardState *cs, int mt, void *arg)
    {
    	switch (mt) {
    		case CARD_RESET:
    			reset_teles0(cs);
    			return(0);
    		case CARD_RELEASE:
    			release_io_teles0(cs);
    			return(0);
    		case CARD_SETIRQ:
    			return(request_irq(cs->irq, &teles0_interrupt,
    					I4L_IRQ_FLAG, "HiSax", cs));
    		case CARD_INIT:
    			inithscxisac(cs, 3);
    			return(0);
    		case CARD_TEST:
    			return(0);
    	}
    	return(0);
    }

    __initfunc(int
    setup_teles0(struct IsdnCard *card))
    {
    	u_char val;
    	struct IsdnCardState *cs = card->cs;
    	char tmp[64];

    	strcpy(tmp, teles0_revision);
    	printk(KERN_INFO "HiSax: Teles 8.0/16.0 driver Rev. %s\n", HiSax_getrev(tmp));
    	if ((cs->typ != ISDN_CTYPE_16_0) && (cs->typ != ISDN_CTYPE_8_0))
    		return (0);

    	if (cs->typ == ISDN_CTYPE_16_0)
    		cs->hw.teles0.cfg_reg = card->para[2];
    	else			/* 8.0 */
    		cs->hw.teles0.cfg_reg = 0;

    	if (card->para[1] < 0x10000) {
    		card->para[1] <<= 4;
    		printk(KERN_INFO
    		   "Teles0: membase configured DOSish, assuming 0x%lx\n",
    		       (unsigned long) card->para[1]);
    	}
    	cs->hw.teles0.membase = card->para[1];
    	cs->irq = card->para[0];
    	if (cs->hw.teles0.cfg_reg) {
    		if (check_region((cs->hw.teles0.cfg_reg), 8)) {
    			printk(KERN_WARNING
    			  "HiSax: %s config port %x-%x already in use\n",
    			       CardType[card->typ],
    			       cs->hw.teles0.cfg_reg,
    			       cs->hw.teles0.cfg_reg + 8);
    			return (0);
    		} else {
    			request_region(cs->hw.teles0.cfg_reg, 8, "teles cfg");
    		}
    	}
    	if (cs->hw.teles0.cfg_reg) {
    		if ((val = bytein(cs->hw.teles0.cfg_reg + 0)) != 0x51) {
    			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
    			       cs->hw.teles0.cfg_reg + 0, val);
    			release_region(cs->hw.teles0.cfg_reg, 8);
    			return (0);
    		}
    		if ((val = bytein(cs->hw.teles0.cfg_reg + 1)) != 0x93) {
    			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
    			       cs->hw.teles0.cfg_reg + 1, val);
    			release_region(cs->hw.teles0.cfg_reg, 8);
    			return (0);
    		}
    		val = bytein(cs->hw.teles0.cfg_reg + 2);	/* 0x1e=without AB
    								   * 0x1f=with AB
    								   * 0x1c 16.3 ???
    								 */
    		if (val != 0x1e && val != 0x1f) {
    			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
    			       cs->hw.teles0.cfg_reg + 2, val);
    			release_region(cs->hw.teles0.cfg_reg, 8);
    			return (0);
    		}
    	}
    	/* 16.0 and 8.0 designed for IOM1 */
    	test_and_set_bit(HW_IOM1, &cs->HW_Flags);
    	printk(KERN_INFO
    	       "HiSax: %s config irq:%d mem:0x%X cfg:0x%X\n",
    	       CardType[cs->typ], cs->irq,
    	       cs->hw.teles0.membase, cs->hw.teles0.cfg_reg);
    	if (reset_teles0(cs)) {
    		printk(KERN_WARNING "Teles0: wrong IRQ\n");
    		release_io_teles0(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, "Teles0:");
    	if (HscxVersion(cs, "Teles0:")) {
    		printk(KERN_WARNING
    		 "Teles0: wrong HSCX versions check IO/MEM addresses\n");
    		release_io_teles0(cs);
    		return (0);
    	}
    	return (1);
    }