drivers/isdn/hisax/saphir.c

   1 /* $Id: saphir.c,v 1.1.4.1 2001/11/20 14:19:36 kai 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 #define __NO_VERSION__
  16 #include <linux/init.h>
  17 #include "hisax.h"
  18 #include "isac.h"
  19 #include "hscx.h"
  20 #include "isdnl1.h"
  21
  22 extern const char *CardType[];
  23 static char *saphir_rev = "$Revision: 1.1.4.1 $";
  24
  25 #define byteout(addr,val) outb(val,addr)
  26 #define bytein(addr) inb(addr)
  27
  28 #define ISAC_DATA       0
  29 #define HSCX_DATA       1
  30 #define ADDRESS_REG     2
  31 #define IRQ_REG         3
  32 #define SPARE_REG       4
  33 #define RESET_REG       5
  34
  35 static inline u_char
  36 readreg(unsigned int ale, unsigned int adr, u_char off)
  37 {
  38         register u_char ret;
  39         long flags;
  40
  41         save_flags(flags);
  42         cli();
  43         byteout(ale, off);
  44         ret = bytein(adr);
  45         restore_flags(flags);
  46         return (ret);
  47 }
  48
  49 static inline void
  50 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  51 {
  52         /* fifo read without cli because it's allready done  */
  53
  54         byteout(ale, off);
  55         insb(adr, data, size);
  56 }
  57
  58
  59 static inline void
  60 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
  61 {
  62         long flags;
  63
  64         save_flags(flags);
  65         cli();
  66         byteout(ale, off);
  67         byteout(adr, data);
  68         restore_flags(flags);
  69 }
  70
  71 static inline void
  72 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  73 {
  74         /* fifo write without cli because it's allready done  */
  75         byteout(ale, off);
  76         outsb(adr, data, size);
  77 }
  78
  79 /* Interface functions */
  80
  81 static u_char
  82 ReadISAC(struct IsdnCardState *cs, u_char offset)
  83 {
  84         return (readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset));
  85 }
  86
  87 static void
  88 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  89 {
  90         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset, value);
  91 }
  92
  93 static void
  94 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  95 {
  96         readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
  97 }
  98
  99 static void
 100 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
 101 {
 102         writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
 103 }
 104
 105 static u_char
 106 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
 107 {
 108         return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
 109                 offset + (hscx ? 0x40 : 0)));
 110 }
 111
 112 static void
 113 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 114 {
 115         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
 116                 offset + (hscx ? 0x40 : 0), value);
 117 }
 118
 119 #define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale, \
 120                 cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
 121 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale, \
 122                 cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
 123
 124 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale, \
 125                 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
 126
 127 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale, \
 128                 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
 129
 130 #include "hscx_irq.c"
 131
 132 static void
 133 saphir_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 134 {
 135         struct IsdnCardState *cs = dev_id;
 136         u_char val;
 137
 138         if (!cs) {
 139                 printk(KERN_WARNING "saphir: Spurious interrupt!\n");
 140                 return;
 141         }
 142         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
 143       Start_HSCX:
 144         if (val)
 145                 hscx_int_main(cs, val);
 146         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 147       Start_ISAC:
 148         if (val)
 149                 isac_interrupt(cs, val);
 150         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
 151         if (val) {
 152                 if (cs->debug & L1_DEB_HSCX)
 153                         debugl1(cs, "HSCX IntStat after IntRoutine");
 154                 goto Start_HSCX;
 155         }
 156         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 157         if (val) {
 158                 if (cs->debug & L1_DEB_ISAC)
 159                         debugl1(cs, "ISAC IntStat after IntRoutine");
 160                 goto Start_ISAC;
 161         }
 162         /* Watchdog */
 163         if (cs->hw.saphir.timer.function)
 164                 mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
 165         else
 166                 printk(KERN_WARNING "saphir: Spurious timer!\n");
 167         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
 168         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
 169         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
 170         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
 171         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
 172         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
 173 }
 174
 175 static void
 176 SaphirWatchDog(struct IsdnCardState *cs)
 177 {
 178         /* 5 sec WatchDog, so read at least every 4 sec */
 179         cs->readisac(cs, ISAC_RBCH);
 180         mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
 181 }
 182
 183 void
 184 release_io_saphir(struct IsdnCardState *cs)
 185 {
 186         long flags;
 187
 188         save_flags(flags);
 189         cli();
 190         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, 0xff);
 191         del_timer(&cs->hw.saphir.timer);
 192         cs->hw.saphir.timer.function = NULL;
 193         restore_flags(flags);
 194         if (cs->hw.saphir.cfg_reg)
 195                 release_region(cs->hw.saphir.cfg_reg, 6);
 196 }
 197
 198 static int
 199 saphir_reset(struct IsdnCardState *cs)
 200 {
 201         long flags;
 202         u_char irq_val;
 203
 204         switch(cs->irq) {
 205                 case 5: irq_val = 0;
 206                         break;
 207                 case 3: irq_val = 1;
 208                         break;
 209                 case 11:
 210                         irq_val = 2;
 211                         break;
 212                 case 12:
 213                         irq_val = 3;
 214                         break;
 215                 case 15:
 216                         irq_val = 4;
 217                         break;
 218                 default:
 219                         printk(KERN_WARNING "HiSax: saphir wrong IRQ %d\n",
 220                                 cs->irq);
 221                         return (1);
 222         }
 223         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
 224         save_flags(flags);
 225         sti();
 226         byteout(cs->hw.saphir.cfg_reg + RESET_REG, 1);
 227         set_current_state(TASK_UNINTERRUPTIBLE);
 228         schedule_timeout((30*HZ)/1000); /* Timeout 30ms */
 229         byteout(cs->hw.saphir.cfg_reg + RESET_REG, 0);
 230         set_current_state(TASK_UNINTERRUPTIBLE);
 231         schedule_timeout((30*HZ)/1000); /* Timeout 30ms */
 232         restore_flags(flags);
 233         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
 234         byteout(cs->hw.saphir.cfg_reg + SPARE_REG, 0x02);
 235         return (0);
 236 }
 237
 238 static int
 239 saphir_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 240 {
 241         switch (mt) {
 242                 case CARD_RESET:
 243                         saphir_reset(cs);
 244                         return(0);
 245                 case CARD_RELEASE:
 246                         release_io_saphir(cs);
 247                         return(0);
 248                 case CARD_INIT:
 249                         inithscxisac(cs, 3);
 250                         return(0);
 251                 case CARD_TEST:
 252                         return(0);
 253         }
 254         return(0);
 255 }
 256
 257
 258 int __init
 259 setup_saphir(struct IsdnCard *card)
 260 {
 261         struct IsdnCardState *cs = card->cs;
 262         char tmp[64];
 263
 264         strcpy(tmp, saphir_rev);
 265         printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
 266         if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
 267                 return (0);
 268
 269         /* IO-Ports */
 270         cs->hw.saphir.cfg_reg = card->para[1];
 271         cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
 272         cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
 273         cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
 274         cs->irq = card->para[0];
 275         if (check_region((cs->hw.saphir.cfg_reg), 6)) {
 276                 printk(KERN_WARNING
 277                         "HiSax: %s config port %x-%x already in use\n",
 278                         CardType[card->typ],
 279                         cs->hw.saphir.cfg_reg,
 280                         cs->hw.saphir.cfg_reg + 5);
 281                 return (0);
 282         } else
 283                 request_region(cs->hw.saphir.cfg_reg,6, "saphir");
 284
 285         printk(KERN_INFO
 286                "HiSax: %s config irq:%d io:0x%X\n",
 287                CardType[cs->typ], cs->irq,
 288                cs->hw.saphir.cfg_reg);
 289
 290         cs->hw.saphir.timer.function = (void *) SaphirWatchDog;
 291         cs->hw.saphir.timer.data = (long) cs;
 292         init_timer(&cs->hw.saphir.timer);
 293         cs->hw.saphir.timer.expires = jiffies + 4*HZ;
 294         add_timer(&cs->hw.saphir.timer);
 295         if (saphir_reset(cs)) {
 296                 release_io_saphir(cs);
 297                 return (0);
 298         }
 299         cs->readisac = &ReadISAC;
 300         cs->writeisac = &WriteISAC;
 301         cs->readisacfifo = &ReadISACfifo;
 302         cs->writeisacfifo = &WriteISACfifo;
 303         cs->BC_Read_Reg = &ReadHSCX;
 304         cs->BC_Write_Reg = &WriteHSCX;
 305         cs->BC_Send_Data = &hscx_fill_fifo;
 306         cs->cardmsg = &saphir_card_msg;
 307         cs->irq_func = &saphir_interrupt;
 308         ISACVersion(cs, "saphir:");
 309         if (HscxVersion(cs, "saphir:")) {
 310                 printk(KERN_WARNING
 311                     "saphir: wrong HSCX versions check IO address\n");
 312                 release_io_saphir(cs);
 313                 return (0);
 314         }
 315         return (1);
 316 }