drivers/isdn/hisax/teleint.c

   1 /* $Id: teleint.c,v 1.16.2.5 2004/01/19 15:31:50 keil Exp $
   2  *
   3  * low level stuff for TeleInt isdn cards
   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  */
  12
  13 #include <linux/init.h>
  14 #include "hisax.h"
  15 #include "isac.h"
  16 #include "hfc_2bs0.h"
  17 #include "isdnl1.h"
  18
  19 extern const char *CardType[];
  20
  21 static const char *TeleInt_revision = "$Revision: 1.16.2.5 $";
  22
  23 #define byteout(addr,val) outb(val,addr)
  24 #define bytein(addr) inb(addr)
  25
  26 static inline u_char
  27 readreg(unsigned int ale, unsigned int adr, u_char off)
  28 {
  29         register u_char ret;
  30         int max_delay = 2000;
  31
  32         byteout(ale, off);
  33         ret = HFC_BUSY & bytein(ale);
  34         while (ret && --max_delay)
  35                 ret = HFC_BUSY & bytein(ale);
  36         if (!max_delay) {
  37                 printk(KERN_WARNING "TeleInt Busy not inactive\n");
  38                 return (0);
  39         }
  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         register u_char ret;
  48         register int max_delay = 20000;
  49         register int i;
  50
  51         byteout(ale, off);
  52         for (i = 0; i<size; i++) {
  53                 ret = HFC_BUSY & bytein(ale);
  54                 while (ret && --max_delay)
  55                         ret = HFC_BUSY & bytein(ale);
  56                 if (!max_delay) {
  57                         printk(KERN_WARNING "TeleInt Busy not inactive\n");
  58                         return;
  59                 }
  60                 data[i] = bytein(adr);
  61         }
  62 }
  63
  64
  65 static inline void
  66 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
  67 {
  68         register u_char ret;
  69         int max_delay = 2000;
  70
  71         byteout(ale, off);
  72         ret = HFC_BUSY & bytein(ale);
  73         while (ret && --max_delay)
  74                 ret = HFC_BUSY & bytein(ale);
  75         if (!max_delay) {
  76                 printk(KERN_WARNING "TeleInt Busy not inactive\n");
  77                 return;
  78         }
  79         byteout(adr, data);
  80 }
  81
  82 static inline void
  83 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  84 {
  85         register u_char ret;
  86         register int max_delay = 20000;
  87         register int i;
  88
  89         byteout(ale, off);
  90         for (i = 0; i<size; i++) {
  91                 ret = HFC_BUSY & bytein(ale);
  92                 while (ret && --max_delay)
  93                         ret = HFC_BUSY & bytein(ale);
  94                 if (!max_delay) {
  95                         printk(KERN_WARNING "TeleInt Busy not inactive\n");
  96                         return;
  97                 }
  98                 byteout(adr, data[i]);
  99         }
 100 }
 101
 102 /* Interface functions */
 103
 104 static u_char
 105 ReadISAC(struct IsdnCardState *cs, u_char offset)
 106 {
 107         cs->hw.hfc.cip = offset;
 108         return (readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset));
 109 }
 110
 111 static void
 112 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
 113 {
 114         cs->hw.hfc.cip = offset;
 115         writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset, value);
 116 }
 117
 118 static void
 119 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
 120 {
 121         cs->hw.hfc.cip = 0;
 122         readfifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
 123 }
 124
 125 static void
 126 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
 127 {
 128         cs->hw.hfc.cip = 0;
 129         writefifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
 130 }
 131
 132 static u_char
 133 ReadHFC(struct IsdnCardState *cs, int data, u_char reg)
 134 {
 135         register u_char ret;
 136
 137         if (data) {
 138                 cs->hw.hfc.cip = reg;
 139                 byteout(cs->hw.hfc.addr | 1, reg);
 140                 ret = bytein(cs->hw.hfc.addr);
 141                 if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
 142                         debugl1(cs, "hfc RD %02x %02x", reg, ret);
 143         } else
 144                 ret = bytein(cs->hw.hfc.addr | 1);
 145         return (ret);
 146 }
 147
 148 static void
 149 WriteHFC(struct IsdnCardState *cs, int data, u_char reg, u_char value)
 150 {
 151         byteout(cs->hw.hfc.addr | 1, reg);
 152         cs->hw.hfc.cip = reg;
 153         if (data)
 154                 byteout(cs->hw.hfc.addr, value);
 155         if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
 156                 debugl1(cs, "hfc W%c %02x %02x", data ? 'D' : 'C', reg, value);
 157 }
 158
 159 static irqreturn_t
 160 TeleInt_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 161 {
 162         struct IsdnCardState *cs = dev_id;
 163         u_char val;
 164         u_long flags;
 165
 166         spin_lock_irqsave(&cs->lock, flags);
 167         val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
 168       Start_ISAC:
 169         if (val)
 170                 isac_interrupt(cs, val);
 171         val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
 172         if (val) {
 173                 if (cs->debug & L1_DEB_ISAC)
 174                         debugl1(cs, "ISAC IntStat after IntRoutine");
 175                 goto Start_ISAC;
 176         }
 177         writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0xFF);
 178         writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0x0);
 179         spin_unlock_irqrestore(&cs->lock, flags);
 180         return IRQ_HANDLED;
 181 }
 182
 183 static void
 184 TeleInt_Timer(struct IsdnCardState *cs)
 185 {
 186         int stat = 0;
 187         u_long flags;
 188
 189         spin_lock_irqsave(&cs->lock, flags);
 190         if (cs->bcs[0].mode) {
 191                 stat |= 1;
 192                 main_irq_hfc(&cs->bcs[0]);
 193         }
 194         if (cs->bcs[1].mode) {
 195                 stat |= 2;
 196                 main_irq_hfc(&cs->bcs[1]);
 197         }
 198         spin_unlock_irqrestore(&cs->lock, flags);
 199         stat = HZ/100;
 200         if (!stat)
 201                 stat = 1;
 202         cs->hw.hfc.timer.expires = jiffies + stat;
 203         add_timer(&cs->hw.hfc.timer);
 204 }
 205
 206 static void
 207 release_io_TeleInt(struct IsdnCardState *cs)
 208 {
 209         del_timer(&cs->hw.hfc.timer);
 210         releasehfc(cs);
 211         if (cs->hw.hfc.addr)
 212                 release_region(cs->hw.hfc.addr, 2);
 213 }
 214
 215 static void
 216 reset_TeleInt(struct IsdnCardState *cs)
 217 {
 218         printk(KERN_INFO "TeleInt: resetting card\n");
 219         cs->hw.hfc.cirm |= HFC_RESET;
 220         byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);  /* Reset On */
 221         mdelay(10);
 222         cs->hw.hfc.cirm &= ~HFC_RESET;
 223         byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);  /* Reset Off */
 224         mdelay(10);
 225 }
 226
 227 static int
 228 TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 229 {
 230         u_long flags;
 231         int delay;
 232
 233         switch (mt) {
 234                 case CARD_RESET:
 235                         spin_lock_irqsave(&cs->lock, flags);
 236                         reset_TeleInt(cs);
 237                         spin_unlock_irqrestore(&cs->lock, flags);
 238                         return(0);
 239                 case CARD_RELEASE:
 240                         release_io_TeleInt(cs);
 241                         return(0);
 242                 case CARD_INIT:
 243                         spin_lock_irqsave(&cs->lock, flags);
 244                         reset_TeleInt(cs);
 245                         inithfc(cs);
 246                         clear_pending_isac_ints(cs);
 247                         initisac(cs);
 248                         /* Reenable all IRQ */
 249                         cs->writeisac(cs, ISAC_MASK, 0);
 250                         cs->writeisac(cs, ISAC_CMDR, 0x41);
 251                         spin_unlock_irqrestore(&cs->lock, flags);
 252                         delay = HZ/100;
 253                         if (!delay)
 254                                 delay = 1;
 255                         cs->hw.hfc.timer.expires = jiffies + delay;
 256                         add_timer(&cs->hw.hfc.timer);
 257                         return(0);
 258                 case CARD_TEST:
 259                         return(0);
 260         }
 261         return(0);
 262 }
 263
 264 int __devinit
 265 setup_TeleInt(struct IsdnCard *card)
 266 {
 267         struct IsdnCardState *cs = card->cs;
 268         char tmp[64];
 269
 270         strcpy(tmp, TeleInt_revision);
 271         printk(KERN_INFO "HiSax: TeleInt driver Rev. %s\n", HiSax_getrev(tmp));
 272         if (cs->typ != ISDN_CTYPE_TELEINT)
 273                 return (0);
 274
 275         cs->hw.hfc.addr = card->para[1] & 0x3fe;
 276         cs->irq = card->para[0];
 277         cs->hw.hfc.cirm = HFC_CIRM;
 278         cs->hw.hfc.isac_spcr = 0x00;
 279         cs->hw.hfc.cip = 0;
 280         cs->hw.hfc.ctmt = HFC_CTMT | HFC_CLTIMER;
 281         cs->bcs[0].hw.hfc.send = NULL;
 282         cs->bcs[1].hw.hfc.send = NULL;
 283         cs->hw.hfc.fifosize = 7 * 1024 + 512;
 284         cs->hw.hfc.timer.function = (void *) TeleInt_Timer;
 285         cs->hw.hfc.timer.data = (long) cs;
 286         init_timer(&cs->hw.hfc.timer);
 287         if (!request_region(cs->hw.hfc.addr, 2, "TeleInt isdn")) {
 288                 printk(KERN_WARNING
 289                        "HiSax: %s config port %x-%x already in use\n",
 290                        CardType[card->typ],
 291                        cs->hw.hfc.addr,
 292                        cs->hw.hfc.addr + 2);
 293                 return (0);
 294         }
 295         /* HW IO = IO */
 296         byteout(cs->hw.hfc.addr, cs->hw.hfc.addr & 0xff);
 297         byteout(cs->hw.hfc.addr | 1, ((cs->hw.hfc.addr & 0x300) >> 8) | 0x54);
 298         switch (cs->irq) {
 299                 case 3:
 300                         cs->hw.hfc.cirm |= HFC_INTA;
 301                         break;
 302                 case 4:
 303                         cs->hw.hfc.cirm |= HFC_INTB;
 304                         break;
 305                 case 5:
 306                         cs->hw.hfc.cirm |= HFC_INTC;
 307                         break;
 308                 case 7:
 309                         cs->hw.hfc.cirm |= HFC_INTD;
 310                         break;
 311                 case 10:
 312                         cs->hw.hfc.cirm |= HFC_INTE;
 313                         break;
 314                 case 11:
 315                         cs->hw.hfc.cirm |= HFC_INTF;
 316                         break;
 317                 default:
 318                         printk(KERN_WARNING "TeleInt: wrong IRQ\n");
 319                         release_io_TeleInt(cs);
 320                         return (0);
 321         }
 322         byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);
 323         byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.ctmt);
 324
 325         printk(KERN_INFO "TeleInt: defined at 0x%x IRQ %d\n",
 326                 cs->hw.hfc.addr, cs->irq);
 327
 328         setup_isac(cs);
 329         cs->readisac = &ReadISAC;
 330         cs->writeisac = &WriteISAC;
 331         cs->readisacfifo = &ReadISACfifo;
 332         cs->writeisacfifo = &WriteISACfifo;
 333         cs->BC_Read_Reg = &ReadHFC;
 334         cs->BC_Write_Reg = &WriteHFC;
 335         cs->cardmsg = &TeleInt_card_msg;
 336         cs->irq_func = &TeleInt_interrupt;
 337         ISACVersion(cs, "TeleInt:");
 338         return (1);
 339 }