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avm_a1.c

/* $Id: avm_a1.c,v 2.15.2.4 2004/01/13 21:46:03 keil Exp $
 *
 * low level stuff for AVM A1 (Fritz) 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.
 *
 */

#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"

extern const char *CardType[];
static const char *avm_revision = "$Revision: 2.15.2.4 $";

#define      AVM_A1_STAT_ISAC 0x01
#define      AVM_A1_STAT_HSCX 0x02
#define      AVM_A1_STAT_TIMER      0x04

#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.avm.isac, offset));
}

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

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

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

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

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

/*
 * fast interrupt HSCX stuff goes here
 */

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

#include "hscx_irq.c"

static irqreturn_t
avm_a1_interrupt(int intno, void *dev_id)
{
      struct IsdnCardState *cs = dev_id;
      u_char val, sval;
      u_long flags;

      spin_lock_irqsave(&cs->lock, flags);
      while (((sval = bytein(cs->hw.avm.cfg_reg)) & 0xf) != 0x7) {
            if (!(sval & AVM_A1_STAT_TIMER)) {
                  byteout(cs->hw.avm.cfg_reg, 0x1E);
                  sval = bytein(cs->hw.avm.cfg_reg);
            } else if (cs->debug & L1_DEB_INTSTAT)
                  debugl1(cs, "avm IntStatus %x", sval);
            if (!(sval & AVM_A1_STAT_HSCX)) {
                  val = readreg(cs->hw.avm.hscx[1], HSCX_ISTA);
                  if (val)
                        hscx_int_main(cs, val);
            }
            if (!(sval & AVM_A1_STAT_ISAC)) {
                  val = readreg(cs->hw.avm.isac, ISAC_ISTA);
                  if (val)
                        isac_interrupt(cs, val);
            }
      }
      writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0xFF);
      writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0xFF);
      writereg(cs->hw.avm.isac, ISAC_MASK, 0xFF);
      writereg(cs->hw.avm.isac, ISAC_MASK, 0x0);
      writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0x0);
      writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0x0);
      spin_unlock_irqrestore(&cs->lock, flags);
      return IRQ_HANDLED;
}

static inline void
release_ioregs(struct IsdnCardState *cs, int mask)
{
      release_region(cs->hw.avm.cfg_reg, 8);
      if (mask & 1)
            release_region(cs->hw.avm.isac + 32, 32);
      if (mask & 2)
            release_region(cs->hw.avm.isacfifo, 1);
      if (mask & 4)
            release_region(cs->hw.avm.hscx[0] + 32, 32);
      if (mask & 8)
            release_region(cs->hw.avm.hscxfifo[0], 1);
      if (mask & 0x10)
            release_region(cs->hw.avm.hscx[1] + 32, 32);
      if (mask & 0x20)
            release_region(cs->hw.avm.hscxfifo[1], 1);
}

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

      switch (mt) {
            case CARD_RESET:
                  return(0);
            case CARD_RELEASE:
                  release_ioregs(cs, 0x3f);
                  return(0);
            case CARD_INIT:
                  spin_lock_irqsave(&cs->lock, flags);
                  inithscxisac(cs, 1);
                  byteout(cs->hw.avm.cfg_reg, 0x16);
                  byteout(cs->hw.avm.cfg_reg, 0x1E);
                  inithscxisac(cs, 2);
                  spin_unlock_irqrestore(&cs->lock, flags);
                  return(0);
            case CARD_TEST:
                  return(0);
      }
      return(0);
}

int __devinit
setup_avm_a1(struct IsdnCard *card)
{
      u_char val;
      struct IsdnCardState *cs = card->cs;
      char tmp[64];

      strcpy(tmp, avm_revision);
      printk(KERN_INFO "HiSax: AVM driver Rev. %s\n", HiSax_getrev(tmp));
      if (cs->typ != ISDN_CTYPE_A1)
            return (0);

      cs->hw.avm.cfg_reg = card->para[1] + 0x1800;
      cs->hw.avm.isac = card->para[1] + 0x1400 - 0x20;
      cs->hw.avm.hscx[0] = card->para[1] + 0x400 - 0x20;
      cs->hw.avm.hscx[1] = card->para[1] + 0xc00 - 0x20;
      cs->hw.avm.isacfifo = card->para[1] + 0x1000;
      cs->hw.avm.hscxfifo[0] = card->para[1];
      cs->hw.avm.hscxfifo[1] = card->para[1] + 0x800;
      cs->irq = card->para[0];
      if (!request_region(cs->hw.avm.cfg_reg, 8, "avm cfg")) {
            printk(KERN_WARNING
                   "HiSax: %s config port %x-%x already in use\n",
                   CardType[card->typ],
                   cs->hw.avm.cfg_reg,
                   cs->hw.avm.cfg_reg + 8);
            return (0);
      }
      if (!request_region(cs->hw.avm.isac + 32, 32, "HiSax isac")) {
            printk(KERN_WARNING
                   "HiSax: %s isac ports %x-%x already in use\n",
                   CardType[cs->typ],
                   cs->hw.avm.isac + 32,
                   cs->hw.avm.isac + 64);
            release_ioregs(cs, 0);
            return (0);
      }
      if (!request_region(cs->hw.avm.isacfifo, 1, "HiSax isac fifo")) {
            printk(KERN_WARNING
                   "HiSax: %s isac fifo port %x already in use\n",
                   CardType[cs->typ],
                   cs->hw.avm.isacfifo);
            release_ioregs(cs, 1);
            return (0);
      }
      if (!request_region(cs->hw.avm.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.avm.hscx[0] + 32,
                   cs->hw.avm.hscx[0] + 64);
            release_ioregs(cs, 3);
            return (0);
      }
      if (!request_region(cs->hw.avm.hscxfifo[0], 1, "HiSax hscx A fifo")) {
            printk(KERN_WARNING
                   "HiSax: %s hscx A fifo port %x already in use\n",
                   CardType[cs->typ],
                   cs->hw.avm.hscxfifo[0]);
            release_ioregs(cs, 7);
            return (0);
      }
      if (!request_region(cs->hw.avm.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.avm.hscx[1] + 32,
                   cs->hw.avm.hscx[1] + 64);
            release_ioregs(cs, 0xf);
            return (0);
      }
      if (!request_region(cs->hw.avm.hscxfifo[1], 1, "HiSax hscx B fifo")) {
            printk(KERN_WARNING
                   "HiSax: %s hscx B fifo port %x already in use\n",
                   CardType[cs->typ],
                   cs->hw.avm.hscxfifo[1]);
            release_ioregs(cs, 0x1f);
            return (0);
      }
      byteout(cs->hw.avm.cfg_reg, 0x0);
      HZDELAY(HZ / 5 + 1);
      byteout(cs->hw.avm.cfg_reg, 0x1);
      HZDELAY(HZ / 5 + 1);
      byteout(cs->hw.avm.cfg_reg, 0x0);
      HZDELAY(HZ / 5 + 1);
      val = cs->irq;
      if (val == 9)
            val = 2;
      byteout(cs->hw.avm.cfg_reg + 1, val);
      HZDELAY(HZ / 5 + 1);
      byteout(cs->hw.avm.cfg_reg, 0x0);
      HZDELAY(HZ / 5 + 1);

      val = bytein(cs->hw.avm.cfg_reg);
      printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
             cs->hw.avm.cfg_reg, val);
      val = bytein(cs->hw.avm.cfg_reg + 3);
      printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
             cs->hw.avm.cfg_reg + 3, val);
      val = bytein(cs->hw.avm.cfg_reg + 2);
      printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
             cs->hw.avm.cfg_reg + 2, val);
      val = bytein(cs->hw.avm.cfg_reg);
      printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
             cs->hw.avm.cfg_reg, val);

      printk(KERN_INFO
             "HiSax: %s config irq:%d cfg:0x%X\n",
             CardType[cs->typ], cs->irq,
             cs->hw.avm.cfg_reg);
      printk(KERN_INFO
             "HiSax: isac:0x%X/0x%X\n",
             cs->hw.avm.isac + 32, cs->hw.avm.isacfifo);
      printk(KERN_INFO
             "HiSax: hscx A:0x%X/0x%X  hscx B:0x%X/0x%X\n",
             cs->hw.avm.hscx[0] + 32, cs->hw.avm.hscxfifo[0],
             cs->hw.avm.hscx[1] + 32, cs->hw.avm.hscxfifo[1]);

      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;
      setup_isac(cs);
      cs->cardmsg = &AVM_card_msg;
      cs->irq_func = &avm_a1_interrupt;
      ISACVersion(cs, "AVM A1:");
      if (HscxVersion(cs, "AVM A1:")) {
            printk(KERN_WARNING
                   "AVM A1: wrong HSCX versions check IO address\n");
            release_ioregs(cs, 0x3f);
            return (0);
      }
      return (1);
}

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