linux/drivers/isdn/hisax/saphir.c
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   1/* $Id: saphir.c,v 1.10.2.4 2004/01/13 23:48:39 keil Exp $
   2 *
   3 * low level stuff for HST Saphir 1
   4 *
   5 * Author       Karsten Keil
   6 * Copyright    by Karsten Keil      <keil@isdn4linux.de>
   7 * 
   8 * This software may be used and distributed according to the terms
   9 * of the GNU General Public License, incorporated herein by reference.
  10 *
  11 * Thanks to    HST High Soft Tech GmbH
  12 *
  13 */
  14
  15#include <linux/init.h>
  16#include "hisax.h"
  17#include "isac.h"
  18#include "hscx.h"
  19#include "isdnl1.h"
  20
  21static char *saphir_rev = "$Revision: 1.10.2.4 $";
  22
  23#define byteout(addr,val) outb(val,addr)
  24#define bytein(addr) inb(addr)
  25
  26#define ISAC_DATA       0
  27#define HSCX_DATA       1
  28#define ADDRESS_REG     2
  29#define IRQ_REG         3
  30#define SPARE_REG       4
  31#define RESET_REG       5
  32
  33static inline u_char
  34readreg(unsigned int ale, unsigned int adr, u_char off)
  35{
  36        register u_char ret;
  37
  38        byteout(ale, off);
  39        ret = bytein(adr);
  40        return (ret);
  41}
  42
  43static inline void
  44readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  45{
  46        byteout(ale, off);
  47        insb(adr, data, size);
  48}
  49
  50
  51static inline void
  52writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
  53{
  54        byteout(ale, off);
  55        byteout(adr, data);
  56}
  57
  58static inline void
  59writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  60{
  61        byteout(ale, off);
  62        outsb(adr, data, size);
  63}
  64
  65/* Interface functions */
  66
  67static u_char
  68ReadISAC(struct IsdnCardState *cs, u_char offset)
  69{
  70        return (readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset));
  71}
  72
  73static void
  74WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  75{
  76        writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset, value);
  77}
  78
  79static void
  80ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  81{
  82        readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
  83}
  84
  85static void
  86WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  87{
  88        writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
  89}
  90
  91static u_char
  92ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
  93{
  94        return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
  95                offset + (hscx ? 0x40 : 0)));
  96}
  97
  98static void
  99WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 100{
 101        writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
 102                offset + (hscx ? 0x40 : 0), value);
 103}
 104
 105#define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale, \
 106                cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
 107#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale, \
 108                cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
 109
 110#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale, \
 111                cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
 112
 113#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale, \
 114                cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
 115
 116#include "hscx_irq.c"
 117
 118static irqreturn_t
 119saphir_interrupt(int intno, void *dev_id)
 120{
 121        struct IsdnCardState *cs = dev_id;
 122        u_char val;
 123        u_long flags;
 124
 125        spin_lock_irqsave(&cs->lock, flags);
 126        val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
 127      Start_HSCX:
 128        if (val)
 129                hscx_int_main(cs, val);
 130        val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 131      Start_ISAC:
 132        if (val)
 133                isac_interrupt(cs, val);
 134        val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
 135        if (val) {
 136                if (cs->debug & L1_DEB_HSCX)
 137                        debugl1(cs, "HSCX IntStat after IntRoutine");
 138                goto Start_HSCX;
 139        }
 140        val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 141        if (val) {
 142                if (cs->debug & L1_DEB_ISAC)
 143                        debugl1(cs, "ISAC IntStat after IntRoutine");
 144                goto Start_ISAC;
 145        }
 146        /* Watchdog */
 147        if (cs->hw.saphir.timer.function) 
 148                mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
 149        else
 150                printk(KERN_WARNING "saphir: Spurious timer!\n");
 151        writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
 152        writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
 153        writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
 154        writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
 155        writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
 156        writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
 157        spin_unlock_irqrestore(&cs->lock, flags);
 158        return IRQ_HANDLED;
 159}
 160
 161static void
 162SaphirWatchDog(struct IsdnCardState *cs)
 163{
 164        u_long flags;
 165
 166        spin_lock_irqsave(&cs->lock, flags);
 167        /* 5 sec WatchDog, so read at least every 4 sec */
 168        cs->readisac(cs, ISAC_RBCH);
 169        spin_unlock_irqrestore(&cs->lock, flags);
 170        mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
 171}
 172
 173static void
 174release_io_saphir(struct IsdnCardState *cs)
 175{
 176        byteout(cs->hw.saphir.cfg_reg + IRQ_REG, 0xff);
 177        del_timer(&cs->hw.saphir.timer);
 178        cs->hw.saphir.timer.function = NULL;
 179        if (cs->hw.saphir.cfg_reg)
 180                release_region(cs->hw.saphir.cfg_reg, 6);
 181}
 182
 183static int
 184saphir_reset(struct IsdnCardState *cs)
 185{
 186        u_char irq_val;
 187
 188        switch(cs->irq) {
 189                case 5: irq_val = 0;
 190                        break;
 191                case 3: irq_val = 1;
 192                        break;
 193                case 11:
 194                        irq_val = 2;
 195                        break;
 196                case 12:
 197                        irq_val = 3;
 198                        break;
 199                case 15:
 200                        irq_val = 4;
 201                        break;
 202                default:
 203                        printk(KERN_WARNING "HiSax: saphir wrong IRQ %d\n",
 204                                cs->irq);
 205                        return (1);
 206        }
 207        byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
 208        byteout(cs->hw.saphir.cfg_reg + RESET_REG, 1);
 209        mdelay(10);
 210        byteout(cs->hw.saphir.cfg_reg + RESET_REG, 0);
 211        mdelay(10);
 212        byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
 213        byteout(cs->hw.saphir.cfg_reg + SPARE_REG, 0x02);
 214        return (0);
 215}
 216
 217static int
 218saphir_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 219{
 220        u_long flags;
 221
 222        switch (mt) {
 223                case CARD_RESET:
 224                        spin_lock_irqsave(&cs->lock, flags);
 225                        saphir_reset(cs);
 226                        spin_unlock_irqrestore(&cs->lock, flags);
 227                        return(0);
 228                case CARD_RELEASE:
 229                        release_io_saphir(cs);
 230                        return(0);
 231                case CARD_INIT:
 232                        spin_lock_irqsave(&cs->lock, flags);
 233                        inithscxisac(cs, 3);
 234                        spin_unlock_irqrestore(&cs->lock, flags);
 235                        return(0);
 236                case CARD_TEST:
 237                        return(0);
 238        }
 239        return(0);
 240}
 241
 242
 243int __devinit
 244setup_saphir(struct IsdnCard *card)
 245{
 246        struct IsdnCardState *cs = card->cs;
 247        char tmp[64];
 248
 249        strcpy(tmp, saphir_rev);
 250        printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
 251        if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
 252                return (0);
 253
 254        /* IO-Ports */
 255        cs->hw.saphir.cfg_reg = card->para[1];
 256        cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
 257        cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
 258        cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
 259        cs->irq = card->para[0];
 260        if (!request_region(cs->hw.saphir.cfg_reg, 6, "saphir")) {
 261                printk(KERN_WARNING
 262                        "HiSax: HST Saphir config port %x-%x already in use\n",
 263                        cs->hw.saphir.cfg_reg,
 264                        cs->hw.saphir.cfg_reg + 5);
 265                return (0);
 266        }
 267
 268        printk(KERN_INFO "HiSax: HST Saphir config irq:%d io:0x%X\n",
 269               cs->irq, cs->hw.saphir.cfg_reg);
 270
 271        setup_isac(cs);
 272        cs->hw.saphir.timer.function = (void *) SaphirWatchDog;
 273        cs->hw.saphir.timer.data = (long) cs;
 274        init_timer(&cs->hw.saphir.timer);
 275        cs->hw.saphir.timer.expires = jiffies + 4*HZ;
 276        add_timer(&cs->hw.saphir.timer);
 277        if (saphir_reset(cs)) {
 278                release_io_saphir(cs);
 279                return (0);
 280        }
 281        cs->readisac = &ReadISAC;
 282        cs->writeisac = &WriteISAC;
 283        cs->readisacfifo = &ReadISACfifo;
 284        cs->writeisacfifo = &WriteISACfifo;
 285        cs->BC_Read_Reg = &ReadHSCX;
 286        cs->BC_Write_Reg = &WriteHSCX;
 287        cs->BC_Send_Data = &hscx_fill_fifo;
 288        cs->cardmsg = &saphir_card_msg;
 289        cs->irq_func = &saphir_interrupt;
 290        ISACVersion(cs, "saphir:");
 291        if (HscxVersion(cs, "saphir:")) {
 292                printk(KERN_WARNING
 293                    "saphir: wrong HSCX versions check IO address\n");
 294                release_io_saphir(cs);
 295                return (0);
 296        }
 297        return (1);
 298}
 299
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