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   1 /* $Id: avm_a1.c,v 2.15.2.4 2004/01/13 21:46:03 keil Exp $
   2  *
   3  * low level stuff for AVM A1 (Fritz) 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 "hscx.h"
  17 #include "isdnl1.h"
  18
  19 extern const char *CardType[];
  20 static const char *avm_revision = "$Revision: 2.15.2.4 $";
  21
  22 #define  AVM_A1_STAT_ISAC       0x01
  23 #define  AVM_A1_STAT_HSCX       0x02
  24 #define  AVM_A1_STAT_TIMER      0x04
  25
  26 #define byteout(addr,val) outb(val,addr)
  27 #define bytein(addr) inb(addr)
  28
  29 static inline u_char
  30 readreg(unsigned int adr, u_char off)
  31 {
  32         return (bytein(adr + off));
  33 }
  34
  35 static inline void
  36 writereg(unsigned int adr, u_char off, u_char data)
  37 {
  38         byteout(adr + off, data);
  39 }
  40
  41
  42 static inline void
  43 read_fifo(unsigned int adr, u_char * data, int size)
  44 {
  45         insb(adr, data, size);
  46 }
  47
  48 static void
  49 write_fifo(unsigned int adr, u_char * data, int size)
  50 {
  51         outsb(adr, data, size);
  52 }
  53
  54 /* Interface functions */
  55
  56 static u_char
  57 ReadISAC(struct IsdnCardState *cs, u_char offset)
  58 {
  59         return (readreg(cs->hw.avm.isac, offset));
  60 }
  61
  62 static void
  63 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  64 {
  65         writereg(cs->hw.avm.isac, offset, value);
  66 }
  67
  68 static void
  69 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  70 {
  71         read_fifo(cs->hw.avm.isacfifo, data, size);
  72 }
  73
  74 static void
  75 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  76 {
  77         write_fifo(cs->hw.avm.isacfifo, data, size);
  78 }
  79
  80 static u_char
  81 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
  82 {
  83         return (readreg(cs->hw.avm.hscx[hscx], offset));
  84 }
  85
  86 static void
  87 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
  88 {
  89         writereg(cs->hw.avm.hscx[hscx], offset, value);
  90 }
  91
  92 /*
  93  * fast interrupt HSCX stuff goes here
  94  */
  95
  96 #define READHSCX(cs, nr, reg) readreg(cs->hw.avm.hscx[nr], reg)
  97 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.avm.hscx[nr], reg, data)
  98 #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
  99 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
 100
 101 #include "hscx_irq.c"
 102
 103 static irqreturn_t
 104 avm_a1_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 105 {
 106         struct IsdnCardState *cs = dev_id;
 107         u_char val, sval;
 108         u_long flags;
 109
 110         spin_lock_irqsave(&cs->lock, flags);
 111         while (((sval = bytein(cs->hw.avm.cfg_reg)) & 0xf) != 0x7) {
 112                 if (!(sval & AVM_A1_STAT_TIMER)) {
 113                         byteout(cs->hw.avm.cfg_reg, 0x1E);
 114                         sval = bytein(cs->hw.avm.cfg_reg);
 115                 } else if (cs->debug & L1_DEB_INTSTAT)
 116                         debugl1(cs, "avm IntStatus %x", sval);
 117                 if (!(sval & AVM_A1_STAT_HSCX)) {
 118                         val = readreg(cs->hw.avm.hscx[1], HSCX_ISTA);
 119                         if (val)
 120                                 hscx_int_main(cs, val);
 121                 }
 122                 if (!(sval & AVM_A1_STAT_ISAC)) {
 123                         val = readreg(cs->hw.avm.isac, ISAC_ISTA);
 124                         if (val)
 125                                 isac_interrupt(cs, val);
 126                 }
 127         }
 128         writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0xFF);
 129         writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0xFF);
 130         writereg(cs->hw.avm.isac, ISAC_MASK, 0xFF);
 131         writereg(cs->hw.avm.isac, ISAC_MASK, 0x0);
 132         writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0x0);
 133         writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0x0);
 134         spin_unlock_irqrestore(&cs->lock, flags);
 135         return IRQ_HANDLED;
 136 }
 137
 138 inline static void
 139 release_ioregs(struct IsdnCardState *cs, int mask)
 140 {
 141         release_region(cs->hw.avm.cfg_reg, 8);
 142         if (mask & 1)
 143                 release_region(cs->hw.avm.isac + 32, 32);
 144         if (mask & 2)
 145                 release_region(cs->hw.avm.isacfifo, 1);
 146         if (mask & 4)
 147                 release_region(cs->hw.avm.hscx[0] + 32, 32);
 148         if (mask & 8)
 149                 release_region(cs->hw.avm.hscxfifo[0], 1);
 150         if (mask & 0x10)
 151                 release_region(cs->hw.avm.hscx[1] + 32, 32);
 152         if (mask & 0x20)
 153                 release_region(cs->hw.avm.hscxfifo[1], 1);
 154 }
 155
 156 static int
 157 AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 158 {
 159         u_long flags;
 160
 161         switch (mt) {
 162                 case CARD_RESET:
 163                         return(0);
 164                 case CARD_RELEASE:
 165                         release_ioregs(cs, 0x3f);
 166                         return(0);
 167                 case CARD_INIT:
 168                         spin_lock_irqsave(&cs->lock, flags);
 169                         inithscxisac(cs, 1);
 170                         byteout(cs->hw.avm.cfg_reg, 0x16);
 171                         byteout(cs->hw.avm.cfg_reg, 0x1E);
 172                         inithscxisac(cs, 2);
 173                         spin_unlock_irqrestore(&cs->lock, flags);
 174                         return(0);
 175                 case CARD_TEST:
 176                         return(0);
 177         }
 178         return(0);
 179 }
 180
 181 int __init
 182 setup_avm_a1(struct IsdnCard *card)
 183 {
 184         u_char val;
 185         struct IsdnCardState *cs = card->cs;
 186         char tmp[64];
 187
 188         strcpy(tmp, avm_revision);
 189         printk(KERN_INFO "HiSax: AVM driver Rev. %s\n", HiSax_getrev(tmp));
 190         if (cs->typ != ISDN_CTYPE_A1)
 191                 return (0);
 192
 193         cs->hw.avm.cfg_reg = card->para[1] + 0x1800;
 194         cs->hw.avm.isac = card->para[1] + 0x1400 - 0x20;
 195         cs->hw.avm.hscx[0] = card->para[1] + 0x400 - 0x20;
 196         cs->hw.avm.hscx[1] = card->para[1] + 0xc00 - 0x20;
 197         cs->hw.avm.isacfifo = card->para[1] + 0x1000;
 198         cs->hw.avm.hscxfifo[0] = card->para[1];
 199         cs->hw.avm.hscxfifo[1] = card->para[1] + 0x800;
 200         cs->irq = card->para[0];
 201         if (!request_region(cs->hw.avm.cfg_reg, 8, "avm cfg")) {
 202                 printk(KERN_WARNING
 203                        "HiSax: %s config port %x-%x already in use\n",
 204                        CardType[card->typ],
 205                        cs->hw.avm.cfg_reg,
 206                        cs->hw.avm.cfg_reg + 8);
 207                 return (0);
 208         }
 209         if (!request_region(cs->hw.avm.isac + 32, 32, "HiSax isac")) {
 210                 printk(KERN_WARNING
 211                        "HiSax: %s isac ports %x-%x already in use\n",
 212                        CardType[cs->typ],
 213                        cs->hw.avm.isac + 32,
 214                        cs->hw.avm.isac + 64);
 215                 release_ioregs(cs, 0);
 216                 return (0);
 217         }
 218         if (!request_region(cs->hw.avm.isacfifo, 1, "HiSax isac fifo")) {
 219                 printk(KERN_WARNING
 220                        "HiSax: %s isac fifo port %x already in use\n",
 221                        CardType[cs->typ],
 222                        cs->hw.avm.isacfifo);
 223                 release_ioregs(cs, 1);
 224                 return (0);
 225         }
 226         if (!request_region(cs->hw.avm.hscx[0] + 32, 32, "HiSax hscx A")) {
 227                 printk(KERN_WARNING
 228                        "HiSax: %s hscx A ports %x-%x already in use\n",
 229                        CardType[cs->typ],
 230                        cs->hw.avm.hscx[0] + 32,
 231                        cs->hw.avm.hscx[0] + 64);
 232                 release_ioregs(cs, 3);
 233                 return (0);
 234         }
 235         if (!request_region(cs->hw.avm.hscxfifo[0], 1, "HiSax hscx A fifo")) {
 236                 printk(KERN_WARNING
 237                        "HiSax: %s hscx A fifo port %x already in use\n",
 238                        CardType[cs->typ],
 239                        cs->hw.avm.hscxfifo[0]);
 240                 release_ioregs(cs, 7);
 241                 return (0);
 242         }
 243         if (!request_region(cs->hw.avm.hscx[1] + 32, 32, "HiSax hscx B")) {
 244                 printk(KERN_WARNING
 245                        "HiSax: %s hscx B ports %x-%x already in use\n",
 246                        CardType[cs->typ],
 247                        cs->hw.avm.hscx[1] + 32,
 248                        cs->hw.avm.hscx[1] + 64);
 249                 release_ioregs(cs, 0xf);
 250                 return (0);
 251         }
 252         if (!request_region(cs->hw.avm.hscxfifo[1], 1, "HiSax hscx B fifo")) {
 253                 printk(KERN_WARNING
 254                        "HiSax: %s hscx B fifo port %x already in use\n",
 255                        CardType[cs->typ],
 256                        cs->hw.avm.hscxfifo[1]);
 257                 release_ioregs(cs, 0x1f);
 258                 return (0);
 259         }
 260         byteout(cs->hw.avm.cfg_reg, 0x0);
 261         HZDELAY(HZ / 5 + 1);
 262         byteout(cs->hw.avm.cfg_reg, 0x1);
 263         HZDELAY(HZ / 5 + 1);
 264         byteout(cs->hw.avm.cfg_reg, 0x0);
 265         HZDELAY(HZ / 5 + 1);
 266         val = cs->irq;
 267         if (val == 9)
 268                 val = 2;
 269         byteout(cs->hw.avm.cfg_reg + 1, val);
 270         HZDELAY(HZ / 5 + 1);
 271         byteout(cs->hw.avm.cfg_reg, 0x0);
 272         HZDELAY(HZ / 5 + 1);
 273
 274         val = bytein(cs->hw.avm.cfg_reg);
 275         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 276                cs->hw.avm.cfg_reg, val);
 277         val = bytein(cs->hw.avm.cfg_reg + 3);
 278         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 279                cs->hw.avm.cfg_reg + 3, val);
 280         val = bytein(cs->hw.avm.cfg_reg + 2);
 281         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 282                cs->hw.avm.cfg_reg + 2, val);
 283         val = bytein(cs->hw.avm.cfg_reg);
 284         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 285                cs->hw.avm.cfg_reg, val);
 286
 287         printk(KERN_INFO
 288                "HiSax: %s config irq:%d cfg:0x%X\n",
 289                CardType[cs->typ], cs->irq,
 290                cs->hw.avm.cfg_reg);
 291         printk(KERN_INFO
 292                "HiSax: isac:0x%X/0x%X\n",
 293                cs->hw.avm.isac + 32, cs->hw.avm.isacfifo);
 294         printk(KERN_INFO
 295                "HiSax: hscx A:0x%X/0x%X  hscx B:0x%X/0x%X\n",
 296                cs->hw.avm.hscx[0] + 32, cs->hw.avm.hscxfifo[0],
 297                cs->hw.avm.hscx[1] + 32, cs->hw.avm.hscxfifo[1]);
 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         setup_isac(cs);
 307         cs->cardmsg = &AVM_card_msg;
 308         cs->irq_func = &avm_a1_interrupt;
 309         ISACVersion(cs, "AVM A1:");
 310         if (HscxVersion(cs, "AVM A1:")) {
 311                 printk(KERN_WARNING
 312                        "AVM A1: wrong HSCX versions check IO address\n");
 313                 release_ioregs(cs, 0x3f);
 314                 return (0);
 315         }
 316         return (1);
 317 }