drivers/isdn/hisax/ix1_micro.c

   1 /* $Id: ix1_micro.c,v 2.12.2.4 2004/01/13 23:48:39 keil Exp $
   2  *
   3  * low level stuff for ITK ix1-micro Rev.2 isdn cards
   4  * derived from the original file teles3.c from Karsten Keil
   5  *
   6  * Author       Klaus-Peter Nischke
   7  * Copyright    by Klaus-Peter Nischke, ITK AG
   8  *                                   <klaus@nischke.do.eunet.de>
   9  *              by Karsten Keil      <keil@isdn4linux.de>
  10  *
  11  * This software may be used and distributed according to the terms
  12  * of the GNU General Public License, incorporated herein by reference.
  13  *
  14  * Klaus-Peter Nischke
  15  * Deusener Str. 287
  16  * 44369 Dortmund
  17  * Germany
  18  */
  19
  20 #include <linux/init.h>
  21 #include <linux/isapnp.h>
  22 #include "hisax.h"
  23 #include "isac.h"
  24 #include "hscx.h"
  25 #include "isdnl1.h"
  26
  27 extern const char *CardType[];
  28 const char *ix1_revision = "$Revision: 2.12.2.4 $";
  29
  30 #define byteout(addr,val) outb(val,addr)
  31 #define bytein(addr) inb(addr)
  32
  33 #define SPECIAL_PORT_OFFSET 3
  34
  35 #define ISAC_COMMAND_OFFSET 2
  36 #define ISAC_DATA_OFFSET 0
  37 #define HSCX_COMMAND_OFFSET 2
  38 #define HSCX_DATA_OFFSET 1
  39
  40 #define TIMEOUT 50
  41
  42 static inline u_char
  43 readreg(unsigned int ale, unsigned int adr, u_char off)
  44 {
  45         register u_char ret;
  46
  47         byteout(ale, off);
  48         ret = bytein(adr);
  49         return (ret);
  50 }
  51
  52 static inline void
  53 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  54 {
  55         byteout(ale, off);
  56         insb(adr, data, size);
  57 }
  58
  59
  60 static inline void
  61 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
  62 {
  63         byteout(ale, off);
  64         byteout(adr, data);
  65 }
  66
  67 static inline void
  68 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
  69 {
  70         byteout(ale, off);
  71         outsb(adr, data, size);
  72 }
  73
  74 /* Interface functions */
  75
  76 static u_char
  77 ReadISAC(struct IsdnCardState *cs, u_char offset)
  78 {
  79         return (readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, offset));
  80 }
  81
  82 static void
  83 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  84 {
  85         writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, offset, value);
  86 }
  87
  88 static void
  89 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  90 {
  91         readfifo(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, 0, data, size);
  92 }
  93
  94 static void
  95 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  96 {
  97         writefifo(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, 0, data, size);
  98 }
  99
 100 static u_char
 101 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
 102 {
 103         return (readreg(cs->hw.ix1.hscx_ale,
 104                         cs->hw.ix1.hscx, offset + (hscx ? 0x40 : 0)));
 105 }
 106
 107 static void
 108 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 109 {
 110         writereg(cs->hw.ix1.hscx_ale,
 111                  cs->hw.ix1.hscx, offset + (hscx ? 0x40 : 0), value);
 112 }
 113
 114 #define READHSCX(cs, nr, reg) readreg(cs->hw.ix1.hscx_ale, \
 115                 cs->hw.ix1.hscx, reg + (nr ? 0x40 : 0))
 116 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.ix1.hscx_ale, \
 117                 cs->hw.ix1.hscx, reg + (nr ? 0x40 : 0), data)
 118
 119 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.ix1.hscx_ale, \
 120                 cs->hw.ix1.hscx, (nr ? 0x40 : 0), ptr, cnt)
 121
 122 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.ix1.hscx_ale, \
 123                 cs->hw.ix1.hscx, (nr ? 0x40 : 0), ptr, cnt)
 124
 125 #include "hscx_irq.c"
 126
 127 static irqreturn_t
 128 ix1micro_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 129 {
 130         struct IsdnCardState *cs = dev_id;
 131         u_char val;
 132         u_long flags;
 133
 134         spin_lock_irqsave(&cs->lock, flags);
 135         val = readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_ISTA + 0x40);
 136       Start_HSCX:
 137         if (val)
 138                 hscx_int_main(cs, val);
 139         val = readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_ISTA);
 140       Start_ISAC:
 141         if (val)
 142                 isac_interrupt(cs, val);
 143         val = readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_ISTA + 0x40);
 144         if (val) {
 145                 if (cs->debug & L1_DEB_HSCX)
 146                         debugl1(cs, "HSCX IntStat after IntRoutine");
 147                 goto Start_HSCX;
 148         }
 149         val = readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_ISTA);
 150         if (val) {
 151                 if (cs->debug & L1_DEB_ISAC)
 152                         debugl1(cs, "ISAC IntStat after IntRoutine");
 153                 goto Start_ISAC;
 154         }
 155         writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK, 0xFF);
 156         writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK + 0x40, 0xFF);
 157         writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_MASK, 0xFF);
 158         writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_MASK, 0);
 159         writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK, 0);
 160         writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK + 0x40, 0);
 161         spin_unlock_irqrestore(&cs->lock, flags);
 162         return IRQ_HANDLED;
 163 }
 164
 165 void
 166 release_io_ix1micro(struct IsdnCardState *cs)
 167 {
 168         if (cs->hw.ix1.cfg_reg)
 169                 release_region(cs->hw.ix1.cfg_reg, 4);
 170 }
 171
 172 static void
 173 ix1_reset(struct IsdnCardState *cs)
 174 {
 175         int cnt;
 176
 177         /* reset isac */
 178         cnt = 3 * (HZ / 10) + 1;
 179         while (cnt--) {
 180                 byteout(cs->hw.ix1.cfg_reg + SPECIAL_PORT_OFFSET, 1);
 181                 HZDELAY(1);     /* wait >=10 ms */
 182         }
 183         byteout(cs->hw.ix1.cfg_reg + SPECIAL_PORT_OFFSET, 0);
 184 }
 185
 186 static int
 187 ix1_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 188 {
 189         u_long flags;
 190
 191         switch (mt) {
 192                 case CARD_RESET:
 193                         spin_lock_irqsave(&cs->lock, flags);
 194                         ix1_reset(cs);
 195                         spin_unlock_irqrestore(&cs->lock, flags);
 196                         return(0);
 197                 case CARD_RELEASE:
 198                         release_io_ix1micro(cs);
 199                         return(0);
 200                 case CARD_INIT:
 201                         spin_lock_irqsave(&cs->lock, flags);
 202                         ix1_reset(cs);
 203                         inithscxisac(cs, 3);
 204                         spin_unlock_irqrestore(&cs->lock, flags);
 205                         return(0);
 206                 case CARD_TEST:
 207                         return(0);
 208         }
 209         return(0);
 210 }
 211
 212 #ifdef __ISAPNP__
 213 static struct isapnp_device_id itk_ids[] __initdata = {
 214         { ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x25),
 215           ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x25),
 216           (unsigned long) "ITK micro 2" },
 217         { ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x29),
 218           ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x29),
 219           (unsigned long) "ITK micro 2." },
 220         { 0, }
 221 };
 222
 223 static struct isapnp_device_id *ipid __initdata = &itk_ids[0];
 224 static struct pnp_card *pnp_c __devinitdata = NULL;
 225 #endif
 226
 227
 228 int __init
 229 setup_ix1micro(struct IsdnCard *card)
 230 {
 231         struct IsdnCardState *cs = card->cs;
 232         char tmp[64];
 233
 234         strcpy(tmp, ix1_revision);
 235         printk(KERN_INFO "HiSax: ITK IX1 driver Rev. %s\n", HiSax_getrev(tmp));
 236         if (cs->typ != ISDN_CTYPE_IX1MICROR2)
 237                 return (0);
 238
 239 #ifdef __ISAPNP__
 240         if (!card->para[1] && isapnp_present()) {
 241                 struct pnp_dev *pnp_d;
 242                 while(ipid->card_vendor) {
 243                         if ((pnp_c = pnp_find_card(ipid->card_vendor,
 244                                 ipid->card_device, pnp_c))) {
 245                                 pnp_d = NULL;
 246                                 if ((pnp_d = pnp_find_dev(pnp_c,
 247                                         ipid->vendor, ipid->function, pnp_d))) {
 248                                         int err;
 249
 250                                         printk(KERN_INFO "HiSax: %s detected\n",
 251                                                 (char *)ipid->driver_data);
 252                                         pnp_disable_dev(pnp_d);
 253                                         err = pnp_activate_dev(pnp_d);
 254                                         if (err<0) {
 255                                                 printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n",
 256                                                         __FUNCTION__, err);
 257                                                 return(0);
 258                                         }
 259                                         card->para[1] = pnp_port_start(pnp_d, 0);
 260                                         card->para[0] = pnp_irq(pnp_d, 0);
 261                                         if (!card->para[0] || !card->para[1]) {
 262                                                 printk(KERN_ERR "ITK PnP:some resources are missing %ld/%lx\n",
 263                                                         card->para[0], card->para[1]);
 264                                                 pnp_disable_dev(pnp_d);
 265                                                 return(0);
 266                                         }
 267                                         break;
 268                                 } else {
 269                                         printk(KERN_ERR "ITK PnP: PnP error card found, no device\n");
 270                                 }
 271                         }
 272                         ipid++;
 273                         pnp_c = NULL;
 274                 }
 275                 if (!ipid->card_vendor) {
 276                         printk(KERN_INFO "ITK PnP: no ISAPnP card found\n");
 277                         return(0);
 278                 }
 279         }
 280 #endif
 281         /* IO-Ports */
 282         cs->hw.ix1.isac_ale = card->para[1] + ISAC_COMMAND_OFFSET;
 283         cs->hw.ix1.hscx_ale = card->para[1] + HSCX_COMMAND_OFFSET;
 284         cs->hw.ix1.isac = card->para[1] + ISAC_DATA_OFFSET;
 285         cs->hw.ix1.hscx = card->para[1] + HSCX_DATA_OFFSET;
 286         cs->hw.ix1.cfg_reg = card->para[1];
 287         cs->irq = card->para[0];
 288         if (cs->hw.ix1.cfg_reg) {
 289                 if (!request_region(cs->hw.ix1.cfg_reg, 4, "ix1micro cfg")) {
 290                         printk(KERN_WARNING
 291                           "HiSax: %s config port %x-%x already in use\n",
 292                                CardType[card->typ],
 293                                cs->hw.ix1.cfg_reg,
 294                                cs->hw.ix1.cfg_reg + 4);
 295                         return (0);
 296                 }
 297         }
 298         printk(KERN_INFO "HiSax: %s config irq:%d io:0x%X\n",
 299                 CardType[cs->typ], cs->irq, cs->hw.ix1.cfg_reg);
 300         setup_isac(cs);
 301         cs->readisac = &ReadISAC;
 302         cs->writeisac = &WriteISAC;
 303         cs->readisacfifo = &ReadISACfifo;
 304         cs->writeisacfifo = &WriteISACfifo;
 305         cs->BC_Read_Reg = &ReadHSCX;
 306         cs->BC_Write_Reg = &WriteHSCX;
 307         cs->BC_Send_Data = &hscx_fill_fifo;
 308         cs->cardmsg = &ix1_card_msg;
 309         cs->irq_func = &ix1micro_interrupt;
 310         ISACVersion(cs, "ix1-Micro:");
 311         if (HscxVersion(cs, "ix1-Micro:")) {
 312                 printk(KERN_WARNING
 313                     "ix1-Micro: wrong HSCX versions check IO address\n");
 314                 release_io_ix1micro(cs);
 315                 return (0);
 316         }
 317         return (1);
 318 }