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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
  21 extern const char *CardType[];
  22 static char *saphir_rev = "$Revision: 1.10.2.4 $";
  23
  24 #define byteout(addr,val) outb(val,addr)
  25 #define bytein(addr) inb(addr)
  26
  27 #define ISAC_DATA       0
  28 #define HSCX_DATA       1
  29 #define ADDRESS_REG     2
  30 #define IRQ_REG         3
  31 #define SPARE_REG       4
  32 #define RESET_REG       5
  33
  34 static inline u_char
  35 readreg(unsigned int ale, unsigned int adr, u_char off)
  36 {
  37         register u_char ret;
  38
  39         byteout(ale, off);
  40         ret = bytein(adr);
  41         return (ret);
  42 }
  43
  44 static inline void
  45 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  46 {
  47         byteout(ale, off);
  48         insb(adr, data, size);
  49 }
  50
  51
  52 static inline void
  53 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
  54 {
  55         byteout(ale, off);
  56         byteout(adr, data);
  57 }
  58
  59 static inline void
  60 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  61 {
  62         byteout(ale, off);
  63         outsb(adr, data, size);
  64 }
  65
  66 /* Interface functions */
  67
  68 static u_char
  69 ReadISAC(struct IsdnCardState *cs, u_char offset)
  70 {
  71         return (readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset));
  72 }
  73
  74 static void
  75 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  76 {
  77         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset, value);
  78 }
  79
  80 static void
  81 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  82 {
  83         readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
  84 }
  85
  86 static void
  87 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  88 {
  89         writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
  90 }
  91
  92 static u_char
  93 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
  94 {
  95         return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
  96                 offset + (hscx ? 0x40 : 0)));
  97 }
  98
  99 static void
 100 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 101 {
 102         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
 103                 offset + (hscx ? 0x40 : 0), value);
 104 }
 105
 106 #define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale, \
 107                 cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
 108 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale, \
 109                 cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
 110
 111 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale, \
 112                 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
 113
 114 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale, \
 115                 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
 116
 117 #include "hscx_irq.c"
 118
 119 static irqreturn_t
 120 saphir_interrupt(int intno, void *dev_id)
 121 {
 122         struct IsdnCardState *cs = dev_id;
 123         u_char val;
 124         u_long flags;
 125
 126         spin_lock_irqsave(&cs->lock, flags);
 127         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
 128       Start_HSCX:
 129         if (val)
 130                 hscx_int_main(cs, val);
 131         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 132       Start_ISAC:
 133         if (val)
 134                 isac_interrupt(cs, val);
 135         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
 136         if (val) {
 137                 if (cs->debug & L1_DEB_HSCX)
 138                         debugl1(cs, "HSCX IntStat after IntRoutine");
 139                 goto Start_HSCX;
 140         }
 141         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 142         if (val) {
 143                 if (cs->debug & L1_DEB_ISAC)
 144                         debugl1(cs, "ISAC IntStat after IntRoutine");
 145                 goto Start_ISAC;
 146         }
 147         /* Watchdog */
 148         if (cs->hw.saphir.timer.function)
 149                 mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
 150         else
 151                 printk(KERN_WARNING "saphir: Spurious timer!\n");
 152         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
 153         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
 154         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
 155         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
 156         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
 157         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
 158         spin_unlock_irqrestore(&cs->lock, flags);
 159         return IRQ_HANDLED;
 160 }
 161
 162 static void
 163 SaphirWatchDog(struct IsdnCardState *cs)
 164 {
 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
 174 static void
 175 release_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
 184 static int
 185 saphir_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
 218 static int
 219 saphir_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
 244 int __devinit
 245 setup_saphir(struct IsdnCard *card)
 246 {
 247         struct IsdnCardState *cs = card->cs;
 248         char tmp[64];
 249
 250         strcpy(tmp, saphir_rev);
 251         printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
 252         if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
 253                 return (0);
 254
 255         /* IO-Ports */
 256         cs->hw.saphir.cfg_reg = card->para[1];
 257         cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
 258         cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
 259         cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
 260         cs->irq = card->para[0];
 261         if (!request_region(cs->hw.saphir.cfg_reg, 6, "saphir")) {
 262                 printk(KERN_WARNING
 263                         "HiSax: %s config port %x-%x already in use\n",
 264                         CardType[card->typ],
 265                         cs->hw.saphir.cfg_reg,
 266                         cs->hw.saphir.cfg_reg + 5);
 267                 return (0);
 268         }
 269
 270         printk(KERN_INFO "HiSax: %s config irq:%d io:0x%X\n",
 271                 CardType[cs->typ], cs->irq, cs->hw.saphir.cfg_reg);
 272
 273         setup_isac(cs);
 274         cs->hw.saphir.timer.function = (void *) SaphirWatchDog;
 275         cs->hw.saphir.timer.data = (long) cs;
 276         init_timer(&cs->hw.saphir.timer);
 277         cs->hw.saphir.timer.expires = jiffies + 4*HZ;
 278         add_timer(&cs->hw.saphir.timer);
 279         if (saphir_reset(cs)) {
 280                 release_io_saphir(cs);
 281                 return (0);
 282         }
 283         cs->readisac = &ReadISAC;
 284         cs->writeisac = &WriteISAC;
 285         cs->readisacfifo = &ReadISACfifo;
 286         cs->writeisacfifo = &WriteISACfifo;
 287         cs->BC_Read_Reg = &ReadHSCX;
 288         cs->BC_Write_Reg = &WriteHSCX;
 289         cs->BC_Send_Data = &hscx_fill_fifo;
 290         cs->cardmsg = &saphir_card_msg;
 291         cs->irq_func = &saphir_interrupt;
 292         ISACVersion(cs, "saphir:");
 293         if (HscxVersion(cs, "saphir:")) {
 294                 printk(KERN_WARNING
 295                     "saphir: wrong HSCX versions check IO address\n");
 296                 release_io_saphir(cs);
 297                 return (0);
 298         }
 299         return (1);
 300 }