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teles3.c

/* $Id: teles3.c,v 2.19.2.4 2004/01/13 23:48:39 keil Exp $
 *
 * low level stuff for Teles 16.3 & 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    Jan den Ouden
 *              Fritz Elfert
 *              Beat Doebeli
 *
 */
#include <linux/init.h>
#include <linux/isapnp.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"

extern const char *CardType[];
static const char *teles3_revision = "$Revision: 2.19.2.4 $";

#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 irqreturn_t
teles3_interrupt(int intno, void *dev_id)
{
#define MAXCOUNT 5
      struct IsdnCardState *cs = dev_id;
      u_char val;
      u_long flags;
      int count = 0;

      spin_lock_irqsave(&cs->lock, flags);
      val = readreg(cs->hw.teles3.hscx[1], HSCX_ISTA);
      Start_HSCX:
      if (val)
            hscx_int_main(cs, val);
      val = readreg(cs->hw.teles3.isac, ISAC_ISTA);
      Start_ISAC:
      if (val)
            isac_interrupt(cs, val);
      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);
      writereg(cs->hw.teles3.hscx[0], HSCX_MASK, 0xFF);
      writereg(cs->hw.teles3.hscx[1], HSCX_MASK, 0xFF);
      writereg(cs->hw.teles3.isac, ISAC_MASK, 0xFF);
      writereg(cs->hw.teles3.isac, ISAC_MASK, 0x0);
      writereg(cs->hw.teles3.hscx[0], HSCX_MASK, 0x0);
      writereg(cs->hw.teles3.hscx[1], HSCX_MASK, 0x0);
      spin_unlock_irqrestore(&cs->lock, flags);
      return IRQ_HANDLED;
}

static inline 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);
}

static void
release_io_teles3(struct IsdnCardState *cs)
{
      if (cs->typ == ISDN_CTYPE_TELESPCMCIA) {
            release_region(cs->hw.teles3.hscx[1], 96);
      } 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)
{
      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);
                  }
                  byteout(cs->hw.teles3.cfg_reg + 4, irqcfg);
                  HZDELAY(HZ / 10 + 1);
                  byteout(cs->hw.teles3.cfg_reg + 4, irqcfg | 1);
                  HZDELAY(HZ / 10 + 1);
            } else if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
                  byteout(cs->hw.teles3.cfg_reg, 0xff);
                  HZDELAY(2);
                  byteout(cs->hw.teles3.cfg_reg, 0x00);
                  HZDELAY(2);
            } else {
                  /* Reset off for 16.3 PnP , thanks to Georg Acher */
                  byteout(cs->hw.teles3.isac + 0x3c, 0);
                  HZDELAY(2);
                  byteout(cs->hw.teles3.isac + 0x3c, 1);
                  HZDELAY(2);
            }
      }
      return(0);
}

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

      switch (mt) {
            case CARD_RESET:
                  spin_lock_irqsave(&cs->lock, flags);
                  reset_teles3(cs);
                  spin_unlock_irqrestore(&cs->lock, flags);
                  return(0);
            case CARD_RELEASE:
                  release_io_teles3(cs);
                  return(0);
            case CARD_INIT:
                  spin_lock_irqsave(&cs->lock, flags);
                  inithscxisac(cs, 3);
                  spin_unlock_irqrestore(&cs->lock, flags);
                  return(0);
            case CARD_TEST:
                  return(0);
      }
      return(0);
}

#ifdef __ISAPNP__

static struct isapnp_device_id teles_ids[] __devinitdata = {
      { ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2110),
        ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2110), 
        (unsigned long) "Teles 16.3 PnP" },
      { ISAPNP_VENDOR('C', 'T', 'X'), ISAPNP_FUNCTION(0x0),
        ISAPNP_VENDOR('C', 'T', 'X'), ISAPNP_FUNCTION(0x0), 
        (unsigned long) "Creatix 16.3 PnP" },
      { ISAPNP_VENDOR('C', 'P', 'Q'), ISAPNP_FUNCTION(0x1002),
        ISAPNP_VENDOR('C', 'P', 'Q'), ISAPNP_FUNCTION(0x1002), 
        (unsigned long) "Compaq ISDN S0" },
      { 0, }
};

static struct isapnp_device_id *ipid __devinitdata = &teles_ids[0];
static struct pnp_card *pnp_c __devinitdata = NULL;
#endif

int __devinit
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);

#ifdef __ISAPNP__
      if (!card->para[1] && isapnp_present()) {
            struct pnp_dev *pnp_d;
            while(ipid->card_vendor) {
                  if ((pnp_c = pnp_find_card(ipid->card_vendor,
                        ipid->card_device, pnp_c))) {
                        pnp_d = NULL;
                        if ((pnp_d = pnp_find_dev(pnp_c,
                              ipid->vendor, ipid->function, pnp_d))) {
                              int err;

                              printk(KERN_INFO "HiSax: %s detected\n",
                                    (char *)ipid->driver_data);
                              pnp_disable_dev(pnp_d);
                              err = pnp_activate_dev(pnp_d);
                              if (err<0) {
                                    printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n",
                                          __FUNCTION__, err);
                                    return(0);
                              }
                              card->para[3] = pnp_port_start(pnp_d, 2);
                              card->para[2] = pnp_port_start(pnp_d, 1);
                              card->para[1] = pnp_port_start(pnp_d, 0);
                              card->para[0] = pnp_irq(pnp_d, 0);
                              if (!card->para[0] || !card->para[1] || !card->para[2]) {
                                    printk(KERN_ERR "Teles PnP:some resources are missing %ld/%lx/%lx\n",
                                          card->para[0], card->para[1], card->para[2]);
                                    pnp_disable_dev(pnp_d);
                                    return(0);
                              }
                              break;
                        } else {
                              printk(KERN_ERR "Teles PnP: PnP error card found, no device\n");
                        }
                  }
                  ipid++;
                  pnp_c = NULL;
            } 
            if (!ipid->card_vendor) {
                  printk(KERN_INFO "Teles PnP: no ISAPnP card found\n");
                  return(0);
            }
      }
#endif
      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 = 0;
            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 (!request_region(cs->hw.teles3.hscx[1], 96, "HiSax Teles PCMCIA")) {
                  printk(KERN_WARNING
                         "HiSax: %s ports %x-%x already in use\n",
                         CardType[cs->typ],
                         cs->hw.teles3.hscx[1],
                         cs->hw.teles3.hscx[1] + 96);
                  return (0);
            }
            cs->irq_flags |= IRQF_SHARED; /* cardbus can share */
      } else {
            if (cs->hw.teles3.cfg_reg) {
                  if (cs->typ == ISDN_CTYPE_COMPAQ_ISA) {
                        if (!request_region(cs->hw.teles3.cfg_reg, 1, "teles3 cfg")) {
                              printk(KERN_WARNING
                                    "HiSax: %s config port %x already in use\n",
                                    CardType[card->typ],
                                    cs->hw.teles3.cfg_reg);
                              return (0);
                        }
                  } else {
                        if (!request_region(cs->hw.teles3.cfg_reg, 8, "teles3 cfg")) {
                              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);
                        }
                  }
            }
            if (!request_region(cs->hw.teles3.isac + 32, 32, "HiSax isac")) {
                  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);
            }
            if (!request_region(cs->hw.teles3.hscx[0] + 32, 32, "HiSax hscx A")) {
                  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);
            }
            if (!request_region(cs->hw.teles3.hscx[1] + 32, 32, "HiSax hscx B")) {
                  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);
            }
      }
      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
                                           * 0x38 16.3 1.3
                                           * 0x46 16.3 with AB + Video (Teles-Vision)
                                           */
            if (val != 0x46 && val != 0x39 && val != 0x38 && 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);

      setup_isac(cs);
      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;
      cs->irq_func = &teles3_interrupt;
      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);
}

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