kernel/drivers/isdn/hisax/teles0.c

   1 /* $Id: teles0.c,v 2.15.2.4 2004/01/13 23:48:39 keil Exp $
   2  *
   3  * low level stuff for Teles Memory IO isdn cards
   4  *
   5  * Author       Karsten Keil
   6  *              based on the teles driver from Jan den Ouden
   7  * Copyright    by Karsten Keil      <keil@isdn4linux.de>
   8  *
   9  * This software may be used and distributed according to the terms
  10  * of the GNU General Public License, incorporated herein by reference.
  11  *
  12  * Thanks to    Jan den Ouden
  13  *              Fritz Elfert
  14  *              Beat Doebeli
  15  *
  16  */
  17
  18 #include <linux/init.h>
  19 #include "hisax.h"
  20 #include "isdnl1.h"
  21 #include "isac.h"
  22 #include "hscx.h"
  23
  24 static const char *teles0_revision = "$Revision: 2.15.2.4 $";
  25
  26 #define TELES_IOMEM_SIZE        0x400
  27 #define byteout(addr, val) outb(val, addr)
  28 #define bytein(addr) inb(addr)
  29
  30 static inline u_char
  31 readisac(void __iomem *adr, u_char off)
  32 {
  33         return readb(adr + ((off & 1) ? 0x2ff : 0x100) + off);
  34 }
  35
  36 static inline void
  37 writeisac(void __iomem *adr, u_char off, u_char data)
  38 {
  39         writeb(data, adr + ((off & 1) ? 0x2ff : 0x100) + off); mb();
  40 }
  41
  42
  43 static inline u_char
  44 readhscx(void __iomem *adr, int hscx, u_char off)
  45 {
  46         return readb(adr + (hscx ? 0x1c0 : 0x180) +
  47                      ((off & 1) ? 0x1ff : 0) + off);
  48 }
  49
  50 static inline void
  51 writehscx(void __iomem *adr, int hscx, u_char off, u_char data)
  52 {
  53         writeb(data, adr + (hscx ? 0x1c0 : 0x180) +
  54                ((off & 1) ? 0x1ff : 0) + off); mb();
  55 }
  56
  57 static inline void
  58 read_fifo_isac(void __iomem *adr, u_char *data, int size)
  59 {
  60         register int i;
  61         register u_char __iomem *ad = adr + 0x100;
  62         for (i = 0; i < size; i++)
  63                 data[i] = readb(ad);
  64 }
  65
  66 static inline void
  67 write_fifo_isac(void __iomem *adr, u_char *data, int size)
  68 {
  69         register int i;
  70         register u_char __iomem *ad = adr + 0x100;
  71         for (i = 0; i < size; i++) {
  72                 writeb(data[i], ad); mb();
  73         }
  74 }
  75
  76 static inline void
  77 read_fifo_hscx(void __iomem *adr, int hscx, u_char *data, int size)
  78 {
  79         register int i;
  80         register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
  81         for (i = 0; i < size; i++)
  82                 data[i] = readb(ad);
  83 }
  84
  85 static inline void
  86 write_fifo_hscx(void __iomem *adr, int hscx, u_char *data, int size)
  87 {
  88         int i;
  89         register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
  90         for (i = 0; i < size; i++) {
  91                 writeb(data[i], ad); mb();
  92         }
  93 }
  94
  95 /* Interface functions */
  96
  97 static u_char
  98 ReadISAC(struct IsdnCardState *cs, u_char offset)
  99 {
 100         return (readisac(cs->hw.teles0.membase, offset));
 101 }
 102
 103 static void
 104 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
 105 {
 106         writeisac(cs->hw.teles0.membase, offset, value);
 107 }
 108
 109 static void
 110 ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
 111 {
 112         read_fifo_isac(cs->hw.teles0.membase, data, size);
 113 }
 114
 115 static void
 116 WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
 117 {
 118         write_fifo_isac(cs->hw.teles0.membase, data, size);
 119 }
 120
 121 static u_char
 122 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
 123 {
 124         return (readhscx(cs->hw.teles0.membase, hscx, offset));
 125 }
 126
 127 static void
 128 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 129 {
 130         writehscx(cs->hw.teles0.membase, hscx, offset, value);
 131 }
 132
 133 /*
 134  * fast interrupt HSCX stuff goes here
 135  */
 136
 137 #define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
 138 #define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
 139 #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
 140 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
 141
 142 #include "hscx_irq.c"
 143
 144 static irqreturn_t
 145 teles0_interrupt(int intno, void *dev_id)
 146 {
 147         struct IsdnCardState *cs = dev_id;
 148         u_char val;
 149         u_long flags;
 150         int count = 0;
 151
 152         spin_lock_irqsave(&cs->lock, flags);
 153         val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
 154 Start_HSCX:
 155         if (val)
 156                 hscx_int_main(cs, val);
 157         val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
 158 Start_ISAC:
 159         if (val)
 160                 isac_interrupt(cs, val);
 161         count++;
 162         val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
 163         if (val && count < 5) {
 164                 if (cs->debug & L1_DEB_HSCX)
 165                         debugl1(cs, "HSCX IntStat after IntRoutine");
 166                 goto Start_HSCX;
 167         }
 168         val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
 169         if (val && count < 5) {
 170                 if (cs->debug & L1_DEB_ISAC)
 171                         debugl1(cs, "ISAC IntStat after IntRoutine");
 172                 goto Start_ISAC;
 173         }
 174         writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
 175         writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
 176         writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
 177         writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
 178         writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
 179         writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
 180         spin_unlock_irqrestore(&cs->lock, flags);
 181         return IRQ_HANDLED;
 182 }
 183
 184 static void
 185 release_io_teles0(struct IsdnCardState *cs)
 186 {
 187         if (cs->hw.teles0.cfg_reg)
 188                 release_region(cs->hw.teles0.cfg_reg, 8);
 189         iounmap(cs->hw.teles0.membase);
 190         release_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
 191 }
 192
 193 static int
 194 reset_teles0(struct IsdnCardState *cs)
 195 {
 196         u_char cfval;
 197
 198         if (cs->hw.teles0.cfg_reg) {
 199                 switch (cs->irq) {
 200                 case 2:
 201                 case 9:
 202                         cfval = 0x00;
 203                         break;
 204                 case 3:
 205                         cfval = 0x02;
 206                         break;
 207                 case 4:
 208                         cfval = 0x04;
 209                         break;
 210                 case 5:
 211                         cfval = 0x06;
 212                         break;
 213                 case 10:
 214                         cfval = 0x08;
 215                         break;
 216                 case 11:
 217                         cfval = 0x0A;
 218                         break;
 219                 case 12:
 220                         cfval = 0x0C;
 221                         break;
 222                 case 15:
 223                         cfval = 0x0E;
 224                         break;
 225                 default:
 226                         return (1);
 227                 }
 228                 cfval |= ((cs->hw.teles0.phymem >> 9) & 0xF0);
 229                 byteout(cs->hw.teles0.cfg_reg + 4, cfval);
 230                 HZDELAY(HZ / 10 + 1);
 231                 byteout(cs->hw.teles0.cfg_reg + 4, cfval | 1);
 232                 HZDELAY(HZ / 10 + 1);
 233         }
 234         writeb(0, cs->hw.teles0.membase + 0x80); mb();
 235         HZDELAY(HZ / 5 + 1);
 236         writeb(1, cs->hw.teles0.membase + 0x80); mb();
 237         HZDELAY(HZ / 5 + 1);
 238         return (0);
 239 }
 240
 241 static int
 242 Teles_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 243 {
 244         u_long flags;
 245
 246         switch (mt) {
 247         case CARD_RESET:
 248                 spin_lock_irqsave(&cs->lock, flags);
 249                 reset_teles0(cs);
 250                 spin_unlock_irqrestore(&cs->lock, flags);
 251                 return (0);
 252         case CARD_RELEASE:
 253                 release_io_teles0(cs);
 254                 return (0);
 255         case CARD_INIT:
 256                 spin_lock_irqsave(&cs->lock, flags);
 257                 inithscxisac(cs, 3);
 258                 spin_unlock_irqrestore(&cs->lock, flags);
 259                 return (0);
 260         case CARD_TEST:
 261                 return (0);
 262         }
 263         return (0);
 264 }
 265
 266 int setup_teles0(struct IsdnCard *card)
 267 {
 268         u_char val;
 269         struct IsdnCardState *cs = card->cs;
 270         char tmp[64];
 271
 272         strcpy(tmp, teles0_revision);
 273         printk(KERN_INFO "HiSax: Teles 8.0/16.0 driver Rev. %s\n", HiSax_getrev(tmp));
 274         if ((cs->typ != ISDN_CTYPE_16_0) && (cs->typ != ISDN_CTYPE_8_0))
 275                 return (0);
 276
 277         if (cs->typ == ISDN_CTYPE_16_0)
 278                 cs->hw.teles0.cfg_reg = card->para[2];
 279         else                    /* 8.0 */
 280                 cs->hw.teles0.cfg_reg = 0;
 281
 282         if (card->para[1] < 0x10000) {
 283                 card->para[1] <<= 4;
 284                 printk(KERN_INFO
 285                        "Teles0: membase configured DOSish, assuming 0x%lx\n",
 286                        (unsigned long) card->para[1]);
 287         }
 288         cs->irq = card->para[0];
 289         if (cs->hw.teles0.cfg_reg) {
 290                 if (!request_region(cs->hw.teles0.cfg_reg, 8, "teles cfg")) {
 291                         printk(KERN_WARNING
 292                                "HiSax: %s config port %x-%x already in use\n",
 293                                CardType[card->typ],
 294                                cs->hw.teles0.cfg_reg,
 295                                cs->hw.teles0.cfg_reg + 8);
 296                         return (0);
 297                 }
 298         }
 299         if (cs->hw.teles0.cfg_reg) {
 300                 if ((val = bytein(cs->hw.teles0.cfg_reg + 0)) != 0x51) {
 301                         printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
 302                                cs->hw.teles0.cfg_reg + 0, val);
 303                         release_region(cs->hw.teles0.cfg_reg, 8);
 304                         return (0);
 305                 }
 306                 if ((val = bytein(cs->hw.teles0.cfg_reg + 1)) != 0x93) {
 307                         printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
 308                                cs->hw.teles0.cfg_reg + 1, val);
 309                         release_region(cs->hw.teles0.cfg_reg, 8);
 310                         return (0);
 311                 }
 312                 val = bytein(cs->hw.teles0.cfg_reg + 2);        /* 0x1e=without AB
 313                                                                  * 0x1f=with AB
 314                                                                  * 0x1c 16.3 ???
 315                                                                  */
 316                 if (val != 0x1e && val != 0x1f) {
 317                         printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
 318                                cs->hw.teles0.cfg_reg + 2, val);
 319                         release_region(cs->hw.teles0.cfg_reg, 8);
 320                         return (0);
 321                 }
 322         }
 323         /* 16.0 and 8.0 designed for IOM1 */
 324         test_and_set_bit(HW_IOM1, &cs->HW_Flags);
 325         cs->hw.teles0.phymem = card->para[1];
 326         if (!request_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE, "teles iomem")) {
 327                 printk(KERN_WARNING
 328                        "HiSax: %s memory region %lx-%lx already in use\n",
 329                        CardType[card->typ],
 330                        cs->hw.teles0.phymem,
 331                        cs->hw.teles0.phymem + TELES_IOMEM_SIZE);
 332                 if (cs->hw.teles0.cfg_reg)
 333                         release_region(cs->hw.teles0.cfg_reg, 8);
 334                 return (0);
 335         }
 336         cs->hw.teles0.membase = ioremap(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
 337         printk(KERN_INFO
 338                "HiSax: %s config irq:%d mem:%p cfg:0x%X\n",
 339                CardType[cs->typ], cs->irq,
 340                cs->hw.teles0.membase, cs->hw.teles0.cfg_reg);
 341         if (reset_teles0(cs)) {
 342                 printk(KERN_WARNING "Teles0: wrong IRQ\n");
 343                 release_io_teles0(cs);
 344                 return (0);
 345         }
 346         setup_isac(cs);
 347         cs->readisac = &ReadISAC;
 348         cs->writeisac = &WriteISAC;
 349         cs->readisacfifo = &ReadISACfifo;
 350         cs->writeisacfifo = &WriteISACfifo;
 351         cs->BC_Read_Reg = &ReadHSCX;
 352         cs->BC_Write_Reg = &WriteHSCX;
 353         cs->BC_Send_Data = &hscx_fill_fifo;
 354         cs->cardmsg = &Teles_card_msg;
 355         cs->irq_func = &teles0_interrupt;
 356         ISACVersion(cs, "Teles0:");
 357         if (HscxVersion(cs, "Teles0:")) {
 358                 printk(KERN_WARNING
 359                        "Teles0: wrong HSCX versions check IO/MEM addresses\n");
 360                 release_io_teles0(cs);
 361                 return (0);
 362         }
 363         return (1);
 364 }