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      <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 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 __devinit
 181 setup_avm_a1(struct IsdnCard *card)
 182 {
 183         u_char val;
 184         struct IsdnCardState *cs = card->cs;
 185         char tmp[64];
 186
 187         strcpy(tmp, avm_revision);
 188         printk(KERN_INFO "HiSax: AVM driver Rev. %s\n", HiSax_getrev(tmp));
 189         if (cs->typ != ISDN_CTYPE_A1)
 190                 return (0);
 191
 192         cs->hw.avm.cfg_reg = card->para[1] + 0x1800;
 193         cs->hw.avm.isac = card->para[1] + 0x1400 - 0x20;
 194         cs->hw.avm.hscx[0] = card->para[1] + 0x400 - 0x20;
 195         cs->hw.avm.hscx[1] = card->para[1] + 0xc00 - 0x20;
 196         cs->hw.avm.isacfifo = card->para[1] + 0x1000;
 197         cs->hw.avm.hscxfifo[0] = card->para[1];
 198         cs->hw.avm.hscxfifo[1] = card->para[1] + 0x800;
 199         cs->irq = card->para[0];
 200         if (!request_region(cs->hw.avm.cfg_reg, 8, "avm cfg")) {
 201                 printk(KERN_WARNING
 202                        "HiSax: AVM A1 config port %x-%x already in use\n",
 203                        cs->hw.avm.cfg_reg,
 204                        cs->hw.avm.cfg_reg + 8);
 205                 return (0);
 206         }
 207         if (!request_region(cs->hw.avm.isac + 32, 32, "HiSax isac")) {
 208                 printk(KERN_WARNING
 209                        "HiSax: AVM A1 isac ports %x-%x already in use\n",
 210                        cs->hw.avm.isac + 32,
 211                        cs->hw.avm.isac + 64);
 212                 release_ioregs(cs, 0);
 213                 return (0);
 214         }
 215         if (!request_region(cs->hw.avm.isacfifo, 1, "HiSax isac fifo")) {
 216                 printk(KERN_WARNING
 217                        "HiSax: AVM A1 isac fifo port %x already in use\n",
 218                        cs->hw.avm.isacfifo);
 219                 release_ioregs(cs, 1);
 220                 return (0);
 221         }
 222         if (!request_region(cs->hw.avm.hscx[0] + 32, 32, "HiSax hscx A")) {
 223                 printk(KERN_WARNING
 224                        "HiSax: AVM A1 hscx A ports %x-%x already in use\n",
 225                        cs->hw.avm.hscx[0] + 32,
 226                        cs->hw.avm.hscx[0] + 64);
 227                 release_ioregs(cs, 3);
 228                 return (0);
 229         }
 230         if (!request_region(cs->hw.avm.hscxfifo[0], 1, "HiSax hscx A fifo")) {
 231                 printk(KERN_WARNING
 232                        "HiSax: AVM A1 hscx A fifo port %x already in use\n",
 233                        cs->hw.avm.hscxfifo[0]);
 234                 release_ioregs(cs, 7);
 235                 return (0);
 236         }
 237         if (!request_region(cs->hw.avm.hscx[1] + 32, 32, "HiSax hscx B")) {
 238                 printk(KERN_WARNING
 239                        "HiSax: AVM A1 hscx B ports %x-%x already in use\n",
 240                        cs->hw.avm.hscx[1] + 32,
 241                        cs->hw.avm.hscx[1] + 64);
 242                 release_ioregs(cs, 0xf);
 243                 return (0);
 244         }
 245         if (!request_region(cs->hw.avm.hscxfifo[1], 1, "HiSax hscx B fifo")) {
 246                 printk(KERN_WARNING
 247                        "HiSax: AVM A1 hscx B fifo port %x already in use\n",
 248                        cs->hw.avm.hscxfifo[1]);
 249                 release_ioregs(cs, 0x1f);
 250                 return (0);
 251         }
 252         byteout(cs->hw.avm.cfg_reg, 0x0);
 253         HZDELAY(HZ / 5 + 1);
 254         byteout(cs->hw.avm.cfg_reg, 0x1);
 255         HZDELAY(HZ / 5 + 1);
 256         byteout(cs->hw.avm.cfg_reg, 0x0);
 257         HZDELAY(HZ / 5 + 1);
 258         val = cs->irq;
 259         if (val == 9)
 260                 val = 2;
 261         byteout(cs->hw.avm.cfg_reg + 1, val);
 262         HZDELAY(HZ / 5 + 1);
 263         byteout(cs->hw.avm.cfg_reg, 0x0);
 264         HZDELAY(HZ / 5 + 1);
 265
 266         val = bytein(cs->hw.avm.cfg_reg);
 267         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 268                cs->hw.avm.cfg_reg, val);
 269         val = bytein(cs->hw.avm.cfg_reg + 3);
 270         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 271                cs->hw.avm.cfg_reg + 3, val);
 272         val = bytein(cs->hw.avm.cfg_reg + 2);
 273         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 274                cs->hw.avm.cfg_reg + 2, val);
 275         val = bytein(cs->hw.avm.cfg_reg);
 276         printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
 277                cs->hw.avm.cfg_reg, val);
 278
 279         printk(KERN_INFO "HiSax: AVM A1 config irq:%d cfg:0x%X\n",
 280                cs->irq,
 281                cs->hw.avm.cfg_reg);
 282         printk(KERN_INFO
 283                "HiSax: isac:0x%X/0x%X\n",
 284                cs->hw.avm.isac + 32, cs->hw.avm.isacfifo);
 285         printk(KERN_INFO
 286                "HiSax: hscx A:0x%X/0x%X  hscx B:0x%X/0x%X\n",
 287                cs->hw.avm.hscx[0] + 32, cs->hw.avm.hscxfifo[0],
 288                cs->hw.avm.hscx[1] + 32, cs->hw.avm.hscxfifo[1]);
 289
 290         cs->readisac = &ReadISAC;
 291         cs->writeisac = &WriteISAC;
 292         cs->readisacfifo = &ReadISACfifo;
 293         cs->writeisacfifo = &WriteISACfifo;
 294         cs->BC_Read_Reg = &ReadHSCX;
 295         cs->BC_Write_Reg = &WriteHSCX;
 296         cs->BC_Send_Data = &hscx_fill_fifo;
 297         setup_isac(cs);
 298         cs->cardmsg = &AVM_card_msg;
 299         cs->irq_func = &avm_a1_interrupt;
 300         ISACVersion(cs, "AVM A1:");
 301         if (HscxVersion(cs, "AVM A1:")) {
 302                 printk(KERN_WARNING
 303                        "AVM A1: wrong HSCX versions check IO address\n");
 304                 release_ioregs(cs, 0x3f);
 305                 return (0);
 306         }
 307         return (1);
 308 }