drivers/isdn/hisax/avm_a1.c

   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      <[email protected]>
   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 static const char *avm_revision = "$Revision: 2.15.2.4 $";
  20
  21 #define  AVM_A1_STAT_ISAC       0x01
  22 #define  AVM_A1_STAT_HSCX       0x02
  23 #define  AVM_A1_STAT_TIMER      0x04
  24
  25 #define byteout(addr, val) outb(val, addr)
  26 #define bytein(addr) inb(addr)
  27
  28 static inline u_char
  29 readreg(unsigned int adr, u_char off)
  30 {
  31         return (bytein(adr + off));
  32 }
  33
  34 static inline void
  35 writereg(unsigned int adr, u_char off, u_char data)
  36 {
  37         byteout(adr + off, data);
  38 }
  39
  40
  41 static inline void
  42 read_fifo(unsigned int adr, u_char *data, int size)
  43 {
  44         insb(adr, data, size);
  45 }
  46
  47 static void
  48 write_fifo(unsigned int adr, u_char *data, int size)
  49 {
  50         outsb(adr, data, size);
  51 }
  52
  53 /* Interface functions */
  54
  55 static u_char
  56 ReadISAC(struct IsdnCardState *cs, u_char offset)
  57 {
  58         return (readreg(cs->hw.avm.isac, offset));
  59 }
  60
  61 static void
  62 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  63 {
  64         writereg(cs->hw.avm.isac, offset, value);
  65 }
  66
  67 static void
  68 ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
  69 {
  70         read_fifo(cs->hw.avm.isacfifo, data, size);
  71 }
  72
  73 static void
  74 WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
  75 {
  76         write_fifo(cs->hw.avm.isacfifo, data, size);
  77 }
  78
  79 static u_char
  80 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
  81 {
  82         return (readreg(cs->hw.avm.hscx[hscx], offset));
  83 }
  84
  85 static void
  86 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
  87 {
  88         writereg(cs->hw.avm.hscx[hscx], offset, value);
  89 }
  90
  91 /*
  92  * fast interrupt HSCX stuff goes here
  93  */
  94
  95 #define READHSCX(cs, nr, reg) readreg(cs->hw.avm.hscx[nr], reg)
  96 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.avm.hscx[nr], reg, data)
  97 #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
  98 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
  99
 100 #include "hscx_irq.c"
 101
 102 static irqreturn_t
 103 avm_a1_interrupt(int intno, void *dev_id)
 104 {
 105         struct IsdnCardState *cs = dev_id;
 106         u_char val, sval;
 107         u_long flags;
 108
 109         spin_lock_irqsave(&cs->lock, flags);
 110         while (((sval = bytein(cs->hw.avm.cfg_reg)) & 0xf) != 0x7) {
 111                 if (!(sval & AVM_A1_STAT_TIMER)) {
 112                         byteout(cs->hw.avm.cfg_reg, 0x1E);
 113                         sval = bytein(cs->hw.avm.cfg_reg);
 114                 } else if (cs->debug & L1_DEB_INTSTAT)
 115                         debugl1(cs, "avm IntStatus %x", sval);
 116                 if (!(sval & AVM_A1_STAT_HSCX)) {
 117                         val = readreg(cs->hw.avm.hscx[1], HSCX_ISTA);
 118                         if (val)
 119                                 hscx_int_main(cs, val);
 120                 }
 121                 if (!(sval & AVM_A1_STAT_ISAC)) {
 122                         val = readreg(cs->hw.avm.isac, ISAC_ISTA);
 123                         if (val)
 124                                 isac_interrupt(cs, val);
 125                 }
 126         }
 127         writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0xFF);
 128         writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0xFF);
 129         writereg(cs->hw.avm.isac, ISAC_MASK, 0xFF);
 130         writereg(cs->hw.avm.isac, ISAC_MASK, 0x0);
 131         writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0x0);
 132         writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0x0);
 133         spin_unlock_irqrestore(&cs->lock, flags);
 134         return IRQ_HANDLED;
 135 }
 136
 137 static inline void
 138 release_ioregs(struct IsdnCardState *cs, int mask)
 139 {
 140         release_region(cs->hw.avm.cfg_reg, 8);
 141         if (mask & 1)
 142                 release_region(cs->hw.avm.isac + 32, 32);
 143         if (mask & 2)
 144                 release_region(cs->hw.avm.isacfifo, 1);
 145         if (mask & 4)
 146                 release_region(cs->hw.avm.hscx[0] + 32, 32);
 147         if (mask & 8)
 148                 release_region(cs->hw.avm.hscxfifo[0], 1);
 149         if (mask & 0x10)
 150                 release_region(cs->hw.avm.hscx[1] + 32, 32);
 151         if (mask & 0x20)
 152                 release_region(cs->hw.avm.hscxfifo[1], 1);
 153 }
 154
 155 static int
 156 AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 157 {
 158         u_long flags;
 159
 160         switch (mt) {
 161         case CARD_RESET:
 162                 return (0);
 163         case CARD_RELEASE:
 164                 release_ioregs(cs, 0x3f);
 165                 return (0);
 166         case CARD_INIT:
 167                 spin_lock_irqsave(&cs->lock, flags);
 168                 inithscxisac(cs, 1);
 169                 byteout(cs->hw.avm.cfg_reg, 0x16);
 170                 byteout(cs->hw.avm.cfg_reg, 0x1E);
 171                 inithscxisac(cs, 2);
 172                 spin_unlock_irqrestore(&cs->lock, flags);
 173                 return (0);
 174         case CARD_TEST:
 175                 return (0);
 176         }
 177         return (0);
 178 }
 179
 180 int setup_avm_a1(struct IsdnCard *card)
 181 {
 182         u_char val;
 183         struct IsdnCardState *cs = card->cs;
 184         char tmp[64];
 185
 186         strcpy(tmp, avm_revision);
 187         printk(KERN_INFO "HiSax: AVM driver Rev. %s\n", HiSax_getrev(tmp));
 188         if (cs->typ != ISDN_CTYPE_A1)
 189                 return (0);
 190
 191         cs->hw.avm.cfg_reg = card->para[1] + 0x1800;
 192         cs->hw.avm.isac = card->para[1] + 0x1400 - 0x20;
 193         cs->hw.avm.hscx[0] = card->para[1] + 0x400 - 0x20;
 194         cs->hw.avm.hscx[1] = card->para[1] + 0xc00 - 0x20;
 195         cs->hw.avm.isacfifo = card->para[1] + 0x1000;
 196         cs->hw.avm.hscxfifo[0] = card->para[1];
 197         cs->hw.avm.hscxfifo[1] = card->para[1] + 0x800;
 198         cs->irq = card->para[0];
 199         if (!request_region(cs->hw.avm.cfg_reg, 8, "avm cfg")) {
 200                 printk(KERN_WARNING
 201                        "HiSax: AVM A1 config port %x-%x already in use\n",
 202                        cs->hw.avm.cfg_reg,
 203                        cs->hw.avm.cfg_reg + 8);
 204                 return (0);
 205         }
 206         if (!request_region(cs->hw.avm.isac + 32, 32, "HiSax isac")) {
 207                 printk(KERN_WARNING
 208                        "HiSax: AVM A1 isac ports %x-%x already in use\n",
 209                        cs->hw.avm.isac + 32,
 210                        cs->hw.avm.isac + 64);
 211                 release_ioregs(cs, 0);
 212                 return (0);
 213         }
 214         if (!request_region(cs->hw.avm.isacfifo, 1, "HiSax isac fifo")) {
 215                 printk(KERN_WARNING
 216                        "HiSax: AVM A1 isac fifo port %x already in use\n",
 217                        cs->hw.avm.isacfifo);
 218                 release_ioregs(cs, 1);
 219                 return (0);
 220         }
 221         if (!request_region(cs->hw.avm.hscx[0] + 32, 32, "HiSax hscx A")) {
 222                 printk(KERN_WARNING
 223                        "HiSax: AVM A1 hscx A ports %x-%x already in use\n",
 224                        cs->hw.avm.hscx[0] + 32,
 225                        cs->hw.avm.hscx[0] + 64);
 226                 release_ioregs(cs, 3);
 227                 return (0);
 228         }
 229         if (!request_region(cs->hw.avm.hscxfifo[0], 1, "HiSax hscx A fifo")) {
 230                 printk(KERN_WARNING
 231                        "HiSax: AVM A1 hscx A fifo port %x already in use\n",
 232                        cs->hw.avm.hscxfifo[0]);
 233                 release_ioregs(cs, 7);
 234                 return (0);
 235         }
 236         if (!request_region(cs->hw.avm.hscx[1] + 32, 32, "HiSax hscx B")) {
 237                 printk(KERN_WARNING
 238                        "HiSax: AVM A1 hscx B ports %x-%x already in use\n",
 239                        cs->hw.avm.hscx[1] + 32,
 240                        cs->hw.avm.hscx[1] + 64);
 241                 release_ioregs(cs, 0xf);
 242                 return (0);
 243         }
 244         if (!request_region(cs->hw.avm.hscxfifo[1], 1, "HiSax hscx B fifo")) {
 245                 printk(KERN_WARNING
 246                        "HiSax: AVM A1 hscx B fifo port %x already in use\n",
 247                        cs->hw.avm.hscxfifo[1]);
 248                 release_ioregs(cs, 0x1f);
 249                 return (0);
 250         }
 251         byteout(cs->hw.avm.cfg_reg, 0x0);
 252         HZDELAY(HZ / 5 + 1);
 253         byteout(cs->hw.avm.cfg_reg, 0x1);
 254         HZDELAY(HZ / 5 + 1);
 255         byteout(cs->hw.avm.cfg_reg, 0x0);
 256         HZDELAY(HZ / 5 + 1);
 257         val = cs->irq;
 258         if (val == 9)
 259                 val = 2;
 260         byteout(cs->hw.avm.cfg_reg + 1, val);
 261         HZDELAY(HZ / 5 + 1);
 262         byteout(cs->hw.avm.cfg_reg, 0x0);
 263         HZDELAY(HZ / 5 + 1);
 264
 265         val = bytein(cs->hw.avm.cfg_reg);
 266         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 267                cs->hw.avm.cfg_reg, val);
 268         val = bytein(cs->hw.avm.cfg_reg + 3);
 269         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 270                cs->hw.avm.cfg_reg + 3, val);
 271         val = bytein(cs->hw.avm.cfg_reg + 2);
 272         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 273                cs->hw.avm.cfg_reg + 2, val);
 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
 278         printk(KERN_INFO "HiSax: AVM A1 config irq:%d cfg:0x%X\n",
 279                cs->irq,
 280                cs->hw.avm.cfg_reg);
 281         printk(KERN_INFO
 282                "HiSax: isac:0x%X/0x%X\n",
 283                cs->hw.avm.isac + 32, cs->hw.avm.isacfifo);
 284         printk(KERN_INFO
 285                "HiSax: hscx A:0x%X/0x%X  hscx B:0x%X/0x%X\n",
 286                cs->hw.avm.hscx[0] + 32, cs->hw.avm.hscxfifo[0],
 287                cs->hw.avm.hscx[1] + 32, cs->hw.avm.hscxfifo[1]);
 288
 289         cs->readisac = &ReadISAC;
 290         cs->writeisac = &WriteISAC;
 291         cs->readisacfifo = &ReadISACfifo;
 292         cs->writeisacfifo = &WriteISACfifo;
 293         cs->BC_Read_Reg = &ReadHSCX;
 294         cs->BC_Write_Reg = &WriteHSCX;
 295         cs->BC_Send_Data = &hscx_fill_fifo;
 296         setup_isac(cs);
 297         cs->cardmsg = &AVM_card_msg;
 298         cs->irq_func = &avm_a1_interrupt;
 299         ISACVersion(cs, "AVM A1:");
 300         if (HscxVersion(cs, "AVM A1:")) {
 301                 printk(KERN_WARNING
 302                        "AVM A1: wrong HSCX versions check IO address\n");
 303                 release_ioregs(cs, 0x3f);
 304                 return (0);
 305         }
 306         return (1);
 307 }