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 extern const char *CardType[];
  25
  26 static const char *teles0_revision = "$Revision: 2.15.2.4 $";
  27
  28 #define TELES_IOMEM_SIZE        0x400
  29 #define byteout(addr,val) outb(val,addr)
  30 #define bytein(addr) inb(addr)
  31
  32 static inline u_char
  33 readisac(void __iomem *adr, u_char off)
  34 {
  35         return readb(adr + ((off & 1) ? 0x2ff : 0x100) + off);
  36 }
  37
  38 static inline void
  39 writeisac(void __iomem *adr, u_char off, u_char data)
  40 {
  41         writeb(data, adr + ((off & 1) ? 0x2ff : 0x100) + off); mb();
  42 }
  43
  44
  45 static inline u_char
  46 readhscx(void __iomem *adr, int hscx, u_char off)
  47 {
  48         return readb(adr + (hscx ? 0x1c0 : 0x180) +
  49                      ((off & 1) ? 0x1ff : 0) + off);
  50 }
  51
  52 static inline void
  53 writehscx(void __iomem *adr, int hscx, u_char off, u_char data)
  54 {
  55         writeb(data, adr + (hscx ? 0x1c0 : 0x180) +
  56                ((off & 1) ? 0x1ff : 0) + off); mb();
  57 }
  58
  59 static inline void
  60 read_fifo_isac(void __iomem *adr, u_char * data, int size)
  61 {
  62         register int i;
  63         register u_char __iomem *ad = adr + 0x100;
  64         for (i = 0; i < size; i++)
  65                 data[i] = readb(ad);
  66 }
  67
  68 static inline void
  69 write_fifo_isac(void __iomem *adr, u_char * data, int size)
  70 {
  71         register int i;
  72         register u_char __iomem *ad = adr + 0x100;
  73         for (i = 0; i < size; i++) {
  74                 writeb(data[i], ad); mb();
  75         }
  76 }
  77
  78 static inline void
  79 read_fifo_hscx(void __iomem *adr, int hscx, u_char * data, int size)
  80 {
  81         register int i;
  82         register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
  83         for (i = 0; i < size; i++)
  84                 data[i] = readb(ad);
  85 }
  86
  87 static inline void
  88 write_fifo_hscx(void __iomem *adr, int hscx, u_char * data, int size)
  89 {
  90         int i;
  91         register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
  92         for (i = 0; i < size; i++) {
  93                 writeb(data[i], ad); mb();
  94         }
  95 }
  96
  97 /* Interface functions */
  98
  99 static u_char
 100 ReadISAC(struct IsdnCardState *cs, u_char offset)
 101 {
 102         return (readisac(cs->hw.teles0.membase, offset));
 103 }
 104
 105 static void
 106 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
 107 {
 108         writeisac(cs->hw.teles0.membase, offset, value);
 109 }
 110
 111 static void
 112 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
 113 {
 114         read_fifo_isac(cs->hw.teles0.membase, data, size);
 115 }
 116
 117 static void
 118 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
 119 {
 120         write_fifo_isac(cs->hw.teles0.membase, data, size);
 121 }
 122
 123 static u_char
 124 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
 125 {
 126         return (readhscx(cs->hw.teles0.membase, hscx, offset));
 127 }
 128
 129 static void
 130 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 131 {
 132         writehscx(cs->hw.teles0.membase, hscx, offset, value);
 133 }
 134
 135 /*
 136  * fast interrupt HSCX stuff goes here
 137  */
 138
 139 #define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
 140 #define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
 141 #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
 142 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
 143
 144 #include "hscx_irq.c"
 145
 146 static irqreturn_t
 147 teles0_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 148 {
 149         struct IsdnCardState *cs = dev_id;
 150         u_char val;
 151         u_long flags;
 152         int count = 0;
 153
 154         spin_lock_irqsave(&cs->lock, flags);
 155         val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
 156       Start_HSCX:
 157         if (val)
 158                 hscx_int_main(cs, val);
 159         val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
 160       Start_ISAC:
 161         if (val)
 162                 isac_interrupt(cs, val);
 163         count++;
 164         val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
 165         if (val && count < 5) {
 166                 if (cs->debug & L1_DEB_HSCX)
 167                         debugl1(cs, "HSCX IntStat after IntRoutine");
 168                 goto Start_HSCX;
 169         }
 170         val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
 171         if (val && count < 5) {
 172                 if (cs->debug & L1_DEB_ISAC)
 173                         debugl1(cs, "ISAC IntStat after IntRoutine");
 174                 goto Start_ISAC;
 175         }
 176         writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
 177         writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
 178         writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
 179         writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
 180         writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
 181         writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
 182         spin_unlock_irqrestore(&cs->lock, flags);
 183         return IRQ_HANDLED;
 184 }
 185
 186 static void
 187 release_io_teles0(struct IsdnCardState *cs)
 188 {
 189         if (cs->hw.teles0.cfg_reg)
 190                 release_region(cs->hw.teles0.cfg_reg, 8);
 191         iounmap(cs->hw.teles0.membase);
 192         release_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
 193 }
 194
 195 static int
 196 reset_teles0(struct IsdnCardState *cs)
 197 {
 198         u_char cfval;
 199
 200         if (cs->hw.teles0.cfg_reg) {
 201                 switch (cs->irq) {
 202                         case 2:
 203                         case 9:
 204                                 cfval = 0x00;
 205                                 break;
 206                         case 3:
 207                                 cfval = 0x02;
 208                                 break;
 209                         case 4:
 210                                 cfval = 0x04;
 211                                 break;
 212                         case 5:
 213                                 cfval = 0x06;
 214                                 break;
 215                         case 10:
 216                                 cfval = 0x08;
 217                                 break;
 218                         case 11:
 219                                 cfval = 0x0A;
 220                                 break;
 221                         case 12:
 222                                 cfval = 0x0C;
 223                                 break;
 224                         case 15:
 225                                 cfval = 0x0E;
 226                                 break;
 227                         default:
 228                                 return(1);
 229                 }
 230                 cfval |= ((cs->hw.teles0.phymem >> 9) & 0xF0);
 231                 byteout(cs->hw.teles0.cfg_reg + 4, cfval);
 232                 HZDELAY(HZ / 10 + 1);
 233                 byteout(cs->hw.teles0.cfg_reg + 4, cfval | 1);
 234                 HZDELAY(HZ / 10 + 1);
 235         }
 236         writeb(0, cs->hw.teles0.membase + 0x80); mb();
 237         HZDELAY(HZ / 5 + 1);
 238         writeb(1, cs->hw.teles0.membase + 0x80); mb();
 239         HZDELAY(HZ / 5 + 1);
 240         return(0);
 241 }
 242
 243 static int
 244 Teles_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 245 {
 246         u_long flags;
 247
 248         switch (mt) {
 249                 case CARD_RESET:
 250                         spin_lock_irqsave(&cs->lock, flags);
 251                         reset_teles0(cs);
 252                         spin_unlock_irqrestore(&cs->lock, flags);
 253                         return(0);
 254                 case CARD_RELEASE:
 255                         release_io_teles0(cs);
 256                         return(0);
 257                 case CARD_INIT:
 258                         spin_lock_irqsave(&cs->lock, flags);
 259                         inithscxisac(cs, 3);
 260                         spin_unlock_irqrestore(&cs->lock, flags);
 261                         return(0);
 262                 case CARD_TEST:
 263                         return(0);
 264         }
 265         return(0);
 266 }
 267
 268 int __devinit
 269 setup_teles0(struct IsdnCard *card)
 270 {
 271         u_char val;
 272         struct IsdnCardState *cs = card->cs;
 273         char tmp[64];
 274
 275         strcpy(tmp, teles0_revision);
 276         printk(KERN_INFO "HiSax: Teles 8.0/16.0 driver Rev. %s\n", HiSax_getrev(tmp));
 277         if ((cs->typ != ISDN_CTYPE_16_0) && (cs->typ != ISDN_CTYPE_8_0))
 278                 return (0);
 279
 280         if (cs->typ == ISDN_CTYPE_16_0)
 281                 cs->hw.teles0.cfg_reg = card->para[2];
 282         else                    /* 8.0 */
 283                 cs->hw.teles0.cfg_reg = 0;
 284
 285         if (card->para[1] < 0x10000) {
 286                 card->para[1] <<= 4;
 287                 printk(KERN_INFO
 288                    "Teles0: membase configured DOSish, assuming 0x%lx\n",
 289                        (unsigned long) card->para[1]);
 290         }
 291         cs->irq = card->para[0];
 292         if (cs->hw.teles0.cfg_reg) {
 293                 if (!request_region(cs->hw.teles0.cfg_reg, 8, "teles cfg")) {
 294                         printk(KERN_WARNING
 295                           "HiSax: %s config port %x-%x already in use\n",
 296                                CardType[card->typ],
 297                                cs->hw.teles0.cfg_reg,
 298                                cs->hw.teles0.cfg_reg + 8);
 299                         return (0);
 300                 }
 301         }
 302         if (cs->hw.teles0.cfg_reg) {
 303                 if ((val = bytein(cs->hw.teles0.cfg_reg + 0)) != 0x51) {
 304                         printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
 305                                cs->hw.teles0.cfg_reg + 0, val);
 306                         release_region(cs->hw.teles0.cfg_reg, 8);
 307                         return (0);
 308                 }
 309                 if ((val = bytein(cs->hw.teles0.cfg_reg + 1)) != 0x93) {
 310                         printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
 311                                cs->hw.teles0.cfg_reg + 1, val);
 312                         release_region(cs->hw.teles0.cfg_reg, 8);
 313                         return (0);
 314                 }
 315                 val = bytein(cs->hw.teles0.cfg_reg + 2);        /* 0x1e=without AB
 316                                                                    * 0x1f=with AB
 317                                                                    * 0x1c 16.3 ???
 318                                                                  */
 319                 if (val != 0x1e && val != 0x1f) {
 320                         printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
 321                                cs->hw.teles0.cfg_reg + 2, val);
 322                         release_region(cs->hw.teles0.cfg_reg, 8);
 323                         return (0);
 324                 }
 325         }
 326         /* 16.0 and 8.0 designed for IOM1 */
 327         test_and_set_bit(HW_IOM1, &cs->HW_Flags);
 328         cs->hw.teles0.phymem = card->para[1];
 329         if (!request_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE, "teles iomem")) {
 330                 printk(KERN_WARNING
 331                         "HiSax: %s memory region %lx-%lx already in use\n",
 332                         CardType[card->typ],
 333                         cs->hw.teles0.phymem,
 334                         cs->hw.teles0.phymem + TELES_IOMEM_SIZE);
 335                 if (cs->hw.teles0.cfg_reg)
 336                         release_region(cs->hw.teles0.cfg_reg, 8);
 337                 return (0);
 338         }
 339         cs->hw.teles0.membase = ioremap(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
 340         printk(KERN_INFO
 341                "HiSax: %s config irq:%d mem:%p cfg:0x%X\n",
 342                CardType[cs->typ], cs->irq,
 343                cs->hw.teles0.membase, cs->hw.teles0.cfg_reg);
 344         if (reset_teles0(cs)) {
 345                 printk(KERN_WARNING "Teles0: wrong IRQ\n");
 346                 release_io_teles0(cs);
 347                 return (0);
 348         }
 349         setup_isac(cs);
 350         cs->readisac = &ReadISAC;
 351         cs->writeisac = &WriteISAC;
 352         cs->readisacfifo = &ReadISACfifo;
 353         cs->writeisacfifo = &WriteISACfifo;
 354         cs->BC_Read_Reg = &ReadHSCX;
 355         cs->BC_Write_Reg = &WriteHSCX;
 356         cs->BC_Send_Data = &hscx_fill_fifo;
 357         cs->cardmsg = &Teles_card_msg;
 358         cs->irq_func = &teles0_interrupt;
 359         ISACVersion(cs, "Teles0:");
 360         if (HscxVersion(cs, "Teles0:")) {
 361                 printk(KERN_WARNING
 362                  "Teles0: wrong HSCX versions check IO/MEM addresses\n");
 363                 release_io_teles0(cs);
 364                 return (0);
 365         }
 366         return (1);
 367 }