drivers/isdn/hisax/saphir.c

   1 /* $Id: saphir.c,v 1.10.2.4 2004/01/13 23:48:39 keil Exp $
   2  *
   3  * low level stuff for HST Saphir 1
   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  * Thanks to    HST High Soft Tech GmbH
  12  *
  13  */
  14
  15 #include <linux/init.h>
  16 #include "hisax.h"
  17 #include "isac.h"
  18 #include "hscx.h"
  19 #include "isdnl1.h"
  20
  21 static char *saphir_rev = "$Revision: 1.10.2.4 $";
  22
  23 #define byteout(addr, val) outb(val, addr)
  24 #define bytein(addr) inb(addr)
  25
  26 #define ISAC_DATA       0
  27 #define HSCX_DATA       1
  28 #define ADDRESS_REG     2
  29 #define IRQ_REG         3
  30 #define SPARE_REG       4
  31 #define RESET_REG       5
  32
  33 static inline u_char
  34 readreg(unsigned int ale, unsigned int adr, u_char off)
  35 {
  36         register u_char ret;
  37
  38         byteout(ale, off);
  39         ret = bytein(adr);
  40         return (ret);
  41 }
  42
  43 static inline void
  44 readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
  45 {
  46         byteout(ale, off);
  47         insb(adr, data, size);
  48 }
  49
  50
  51 static inline void
  52 writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
  53 {
  54         byteout(ale, off);
  55         byteout(adr, data);
  56 }
  57
  58 static inline void
  59 writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
  60 {
  61         byteout(ale, off);
  62         outsb(adr, data, size);
  63 }
  64
  65 /* Interface functions */
  66
  67 static u_char
  68 ReadISAC(struct IsdnCardState *cs, u_char offset)
  69 {
  70         return (readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset));
  71 }
  72
  73 static void
  74 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  75 {
  76         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset, value);
  77 }
  78
  79 static void
  80 ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
  81 {
  82         readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
  83 }
  84
  85 static void
  86 WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
  87 {
  88         writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
  89 }
  90
  91 static u_char
  92 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
  93 {
  94         return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
  95                         offset + (hscx ? 0x40 : 0)));
  96 }
  97
  98 static void
  99 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 100 {
 101         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
 102                  offset + (hscx ? 0x40 : 0), value);
 103 }
 104
 105 #define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale,                \
 106                                       cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
 107 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale,        \
 108                                               cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
 109
 110 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale,      \
 111                                                 cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
 112
 113 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale,    \
 114                                                   cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
 115
 116 #include "hscx_irq.c"
 117
 118 static irqreturn_t
 119 saphir_interrupt(int intno, void *dev_id)
 120 {
 121         struct IsdnCardState *cs = dev_id;
 122         u_char val;
 123         u_long flags;
 124
 125         spin_lock_irqsave(&cs->lock, flags);
 126         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
 127 Start_HSCX:
 128         if (val)
 129                 hscx_int_main(cs, val);
 130         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 131 Start_ISAC:
 132         if (val)
 133                 isac_interrupt(cs, val);
 134         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
 135         if (val) {
 136                 if (cs->debug & L1_DEB_HSCX)
 137                         debugl1(cs, "HSCX IntStat after IntRoutine");
 138                 goto Start_HSCX;
 139         }
 140         val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
 141         if (val) {
 142                 if (cs->debug & L1_DEB_ISAC)
 143                         debugl1(cs, "ISAC IntStat after IntRoutine");
 144                 goto Start_ISAC;
 145         }
 146         /* Watchdog */
 147         if (cs->hw.saphir.timer.function)
 148                 mod_timer(&cs->hw.saphir.timer, jiffies + 1 * HZ);
 149         else
 150                 printk(KERN_WARNING "saphir: Spurious timer!\n");
 151         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
 152         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
 153         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
 154         writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
 155         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
 156         writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
 157         spin_unlock_irqrestore(&cs->lock, flags);
 158         return IRQ_HANDLED;
 159 }
 160
 161 static void
 162 SaphirWatchDog(struct IsdnCardState *cs)
 163 {
 164         u_long flags;
 165
 166         spin_lock_irqsave(&cs->lock, flags);
 167         /* 5 sec WatchDog, so read at least every 4 sec */
 168         cs->readisac(cs, ISAC_RBCH);
 169         spin_unlock_irqrestore(&cs->lock, flags);
 170         mod_timer(&cs->hw.saphir.timer, jiffies + 1 * HZ);
 171 }
 172
 173 static void
 174 release_io_saphir(struct IsdnCardState *cs)
 175 {
 176         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, 0xff);
 177         del_timer(&cs->hw.saphir.timer);
 178         cs->hw.saphir.timer.function = NULL;
 179         if (cs->hw.saphir.cfg_reg)
 180                 release_region(cs->hw.saphir.cfg_reg, 6);
 181 }
 182
 183 static int
 184 saphir_reset(struct IsdnCardState *cs)
 185 {
 186         u_char irq_val;
 187
 188         switch (cs->irq) {
 189         case 5: irq_val = 0;
 190                 break;
 191         case 3: irq_val = 1;
 192                 break;
 193         case 11:
 194                 irq_val = 2;
 195                 break;
 196         case 12:
 197                 irq_val = 3;
 198                 break;
 199         case 15:
 200                 irq_val = 4;
 201                 break;
 202         default:
 203                 printk(KERN_WARNING "HiSax: saphir wrong IRQ %d\n",
 204                        cs->irq);
 205                 return (1);
 206         }
 207         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
 208         byteout(cs->hw.saphir.cfg_reg + RESET_REG, 1);
 209         mdelay(10);
 210         byteout(cs->hw.saphir.cfg_reg + RESET_REG, 0);
 211         mdelay(10);
 212         byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
 213         byteout(cs->hw.saphir.cfg_reg + SPARE_REG, 0x02);
 214         return (0);
 215 }
 216
 217 static int
 218 saphir_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 219 {
 220         u_long flags;
 221
 222         switch (mt) {
 223         case CARD_RESET:
 224                 spin_lock_irqsave(&cs->lock, flags);
 225                 saphir_reset(cs);
 226                 spin_unlock_irqrestore(&cs->lock, flags);
 227                 return (0);
 228         case CARD_RELEASE:
 229                 release_io_saphir(cs);
 230                 return (0);
 231         case CARD_INIT:
 232                 spin_lock_irqsave(&cs->lock, flags);
 233                 inithscxisac(cs, 3);
 234                 spin_unlock_irqrestore(&cs->lock, flags);
 235                 return (0);
 236         case CARD_TEST:
 237                 return (0);
 238         }
 239         return (0);
 240 }
 241
 242
 243 int setup_saphir(struct IsdnCard *card)
 244 {
 245         struct IsdnCardState *cs = card->cs;
 246         char tmp[64];
 247
 248         strcpy(tmp, saphir_rev);
 249         printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
 250         if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
 251                 return (0);
 252
 253         /* IO-Ports */
 254         cs->hw.saphir.cfg_reg = card->para[1];
 255         cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
 256         cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
 257         cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
 258         cs->irq = card->para[0];
 259         if (!request_region(cs->hw.saphir.cfg_reg, 6, "saphir")) {
 260                 printk(KERN_WARNING
 261                        "HiSax: HST Saphir config port %x-%x already in use\n",
 262                        cs->hw.saphir.cfg_reg,
 263                        cs->hw.saphir.cfg_reg + 5);
 264                 return (0);
 265         }
 266
 267         printk(KERN_INFO "HiSax: HST Saphir config irq:%d io:0x%X\n",
 268                cs->irq, cs->hw.saphir.cfg_reg);
 269
 270         setup_isac(cs);
 271         cs->hw.saphir.timer.function = (void *) SaphirWatchDog;
 272         cs->hw.saphir.timer.data = (long) cs;
 273         init_timer(&cs->hw.saphir.timer);
 274         cs->hw.saphir.timer.expires = jiffies + 4 * HZ;
 275         add_timer(&cs->hw.saphir.timer);
 276         if (saphir_reset(cs)) {
 277                 release_io_saphir(cs);
 278                 return (0);
 279         }
 280         cs->readisac = &ReadISAC;
 281         cs->writeisac = &WriteISAC;
 282         cs->readisacfifo = &ReadISACfifo;
 283         cs->writeisacfifo = &WriteISACfifo;
 284         cs->BC_Read_Reg = &ReadHSCX;
 285         cs->BC_Write_Reg = &WriteHSCX;
 286         cs->BC_Send_Data = &hscx_fill_fifo;
 287         cs->cardmsg = &saphir_card_msg;
 288         cs->irq_func = &saphir_interrupt;
 289         ISACVersion(cs, "saphir:");
 290         if (HscxVersion(cs, "saphir:")) {
 291                 printk(KERN_WARNING
 292                        "saphir: wrong HSCX versions check IO address\n");
 293                 release_io_saphir(cs);
 294                 return (0);
 295         }
 296         return (1);
 297 }