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);
 127Start_HSCX:
 128        if (val)
 129                hscx_int_main(cs, val);
 130        val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 131Start_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 timer_list *t)
 163{
 164        struct IsdnCardState *cs = from_timer(cs, t, hw.saphir.timer);
 165        u_long flags;
 166
 167        spin_lock_irqsave(&cs->lock, flags);
 168        /* 5 sec WatchDog, so read at least every 4 sec */
 169        cs->readisac(cs, ISAC_RBCH);
 170        spin_unlock_irqrestore(&cs->lock, flags);
 171        mod_timer(&cs->hw.saphir.timer, jiffies + 1 * HZ);
 172}
 173
 174static void
 175release_io_saphir(struct IsdnCardState *cs)
 176{
 177        byteout(cs->hw.saphir.cfg_reg + IRQ_REG, 0xff);
 178        del_timer(&cs->hw.saphir.timer);
 179        cs->hw.saphir.timer.function = NULL;
 180        if (cs->hw.saphir.cfg_reg)
 181                release_region(cs->hw.saphir.cfg_reg, 6);
 182}
 183
 184static int
 185saphir_reset(struct IsdnCardState *cs)
 186{
 187        u_char irq_val;
 188
 189        switch (cs->irq) {
 190        case 5: irq_val = 0;
 191                break;
 192        case 3: irq_val = 1;
 193                break;
 194        case 11:
 195                irq_val = 2;
 196                break;
 197        case 12:
 198                irq_val = 3;
 199                break;
 200        case 15:
 201                irq_val = 4;
 202                break;
 203        default:
 204                printk(KERN_WARNING "HiSax: saphir wrong IRQ %d\n",
 205                       cs->irq);
 206                return (1);
 207        }
 208        byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
 209        byteout(cs->hw.saphir.cfg_reg + RESET_REG, 1);
 210        mdelay(10);
 211        byteout(cs->hw.saphir.cfg_reg + RESET_REG, 0);
 212        mdelay(10);
 213        byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
 214        byteout(cs->hw.saphir.cfg_reg + SPARE_REG, 0x02);
 215        return (0);
 216}
 217
 218static int
 219saphir_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 220{
 221        u_long flags;
 222
 223        switch (mt) {
 224        case CARD_RESET:
 225                spin_lock_irqsave(&cs->lock, flags);
 226                saphir_reset(cs);
 227                spin_unlock_irqrestore(&cs->lock, flags);
 228                return (0);
 229        case CARD_RELEASE:
 230                release_io_saphir(cs);
 231                return (0);
 232        case CARD_INIT:
 233                spin_lock_irqsave(&cs->lock, flags);
 234                inithscxisac(cs, 3);
 235                spin_unlock_irqrestore(&cs->lock, flags);
 236                return (0);
 237        case CARD_TEST:
 238                return (0);
 239        }
 240        return (0);
 241}
 242
 243
 244int setup_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        timer_setup(&cs->hw.saphir.timer, SaphirWatchDog, 0);
 273        cs->hw.saphir.timer.expires = jiffies + 4 * HZ;
 274        add_timer(&cs->hw.saphir.timer);
 275        if (saphir_reset(cs)) {
 276                release_io_saphir(cs);
 277                return (0);
 278        }
 279        cs->readisac = &ReadISAC;
 280        cs->writeisac = &WriteISAC;
 281        cs->readisacfifo = &ReadISACfifo;
 282        cs->writeisacfifo = &WriteISACfifo;
 283        cs->BC_Read_Reg = &ReadHSCX;
 284        cs->BC_Write_Reg = &WriteHSCX;
 285        cs->BC_Send_Data = &hscx_fill_fifo;
 286        cs->cardmsg = &saphir_card_msg;
 287        cs->irq_func = &saphir_interrupt;
 288        ISACVersion(cs, "saphir:");
 289        if (HscxVersion(cs, "saphir:")) {
 290                printk(KERN_WARNING
 291                       "saphir: wrong HSCX versions check IO address\n");
 292                release_io_saphir(cs);
 293                return (0);
 294        }
 295        return (1);
 296}
 297