drivers/isdn/hisax/niccy.c

   1 /* $Id: niccy.c,v 1.21.2.4 2004/01/13 23:48:39 keil Exp $
   2  *
   3  * low level stuff for Dr. Neuhaus NICCY PnP and NICCY PCI and
   4  * compatible (SAGEM cybermodem)
   5  *
   6  * Author       Karsten Keil
   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 Dr. Neuhaus and SAGEM for information
  13  *
  14  */
  15
  16 #include <linux/init.h>
  17 #include "hisax.h"
  18 #include "isac.h"
  19 #include "hscx.h"
  20 #include "isdnl1.h"
  21 #include <linux/pci.h>
  22 #include <linux/isapnp.h>
  23
  24 static const char *niccy_revision = "$Revision: 1.21.2.4 $";
  25
  26 #define byteout(addr, val) outb(val, addr)
  27 #define bytein(addr) inb(addr)
  28
  29 #define ISAC_PCI_DATA   0
  30 #define HSCX_PCI_DATA   1
  31 #define ISAC_PCI_ADDR   2
  32 #define HSCX_PCI_ADDR   3
  33 #define ISAC_PNP        0
  34 #define HSCX_PNP        1
  35
  36 /* SUB Types */
  37 #define NICCY_PNP       1
  38 #define NICCY_PCI       2
  39
  40 /* PCI stuff */
  41 #define PCI_IRQ_CTRL_REG        0x38
  42 #define PCI_IRQ_ENABLE          0x1f00
  43 #define PCI_IRQ_DISABLE         0xff0000
  44 #define PCI_IRQ_ASSERT          0x800000
  45
  46 static inline u_char readreg(unsigned int ale, unsigned int adr, u_char off)
  47 {
  48         register u_char ret;
  49
  50         byteout(ale, off);
  51         ret = bytein(adr);
  52         return ret;
  53 }
  54
  55 static inline void readfifo(unsigned int ale, unsigned int adr, u_char off,
  56                             u_char *data, int size)
  57 {
  58         byteout(ale, off);
  59         insb(adr, data, size);
  60 }
  61
  62 static inline void writereg(unsigned int ale, unsigned int adr, u_char off,
  63                             u_char data)
  64 {
  65         byteout(ale, off);
  66         byteout(adr, data);
  67 }
  68
  69 static inline void writefifo(unsigned int ale, unsigned int adr, u_char off,
  70                              u_char *data, int size)
  71 {
  72         byteout(ale, off);
  73         outsb(adr, data, size);
  74 }
  75
  76 /* Interface functions */
  77
  78 static u_char ReadISAC(struct IsdnCardState *cs, u_char offset)
  79 {
  80         return readreg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, offset);
  81 }
  82
  83 static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  84 {
  85         writereg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, offset, value);
  86 }
  87
  88 static void ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
  89 {
  90         readfifo(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, 0, data, size);
  91 }
  92
  93 static void WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
  94 {
  95         writefifo(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, 0, data, size);
  96 }
  97
  98 static u_char ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
  99 {
 100         return readreg(cs->hw.niccy.hscx_ale,
 101                        cs->hw.niccy.hscx, offset + (hscx ? 0x40 : 0));
 102 }
 103
 104 static void WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset,
 105                       u_char value)
 106 {
 107         writereg(cs->hw.niccy.hscx_ale,
 108                  cs->hw.niccy.hscx, offset + (hscx ? 0x40 : 0), value);
 109 }
 110
 111 #define READHSCX(cs, nr, reg) readreg(cs->hw.niccy.hscx_ale,            \
 112                                       cs->hw.niccy.hscx, reg + (nr ? 0x40 : 0))
 113 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.niccy.hscx_ale,    \
 114                                               cs->hw.niccy.hscx, reg + (nr ? 0x40 : 0), data)
 115
 116 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.niccy.hscx_ale,  \
 117                                                 cs->hw.niccy.hscx, (nr ? 0x40 : 0), ptr, cnt)
 118
 119 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.niccy.hscx_ale, \
 120                                                   cs->hw.niccy.hscx, (nr ? 0x40 : 0), ptr, cnt)
 121
 122 #include "hscx_irq.c"
 123
 124 static irqreturn_t niccy_interrupt(int intno, void *dev_id)
 125 {
 126         struct IsdnCardState *cs = dev_id;
 127         u_char val;
 128         u_long flags;
 129
 130         spin_lock_irqsave(&cs->lock, flags);
 131         if (cs->subtyp == NICCY_PCI) {
 132                 int ival;
 133                 ival = inl(cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
 134                 if (!(ival & PCI_IRQ_ASSERT)) { /* IRQ not for us (shared) */
 135                         spin_unlock_irqrestore(&cs->lock, flags);
 136                         return IRQ_NONE;
 137                 }
 138                 outl(ival, cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
 139         }
 140         val = readreg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx,
 141                       HSCX_ISTA + 0x40);
 142 Start_HSCX:
 143         if (val)
 144                 hscx_int_main(cs, val);
 145         val = readreg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_ISTA);
 146 Start_ISAC:
 147         if (val)
 148                 isac_interrupt(cs, val);
 149         val = readreg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx,
 150                       HSCX_ISTA + 0x40);
 151         if (val) {
 152                 if (cs->debug & L1_DEB_HSCX)
 153                         debugl1(cs, "HSCX IntStat after IntRoutine");
 154                 goto Start_HSCX;
 155         }
 156         val = readreg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_ISTA);
 157         if (val) {
 158                 if (cs->debug & L1_DEB_ISAC)
 159                         debugl1(cs, "ISAC IntStat after IntRoutine");
 160                 goto Start_ISAC;
 161         }
 162         writereg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx, HSCX_MASK, 0xFF);
 163         writereg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx, HSCX_MASK + 0x40,
 164                  0xFF);
 165         writereg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_MASK, 0xFF);
 166         writereg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_MASK, 0);
 167         writereg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx, HSCX_MASK, 0);
 168         writereg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx, HSCX_MASK + 0x40, 0);
 169         spin_unlock_irqrestore(&cs->lock, flags);
 170         return IRQ_HANDLED;
 171 }
 172
 173 static void release_io_niccy(struct IsdnCardState *cs)
 174 {
 175         if (cs->subtyp == NICCY_PCI) {
 176                 int val;
 177
 178                 val = inl(cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
 179                 val &= PCI_IRQ_DISABLE;
 180                 outl(val, cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
 181                 release_region(cs->hw.niccy.cfg_reg, 0x40);
 182                 release_region(cs->hw.niccy.isac, 4);
 183         } else {
 184                 release_region(cs->hw.niccy.isac, 2);
 185                 release_region(cs->hw.niccy.isac_ale, 2);
 186         }
 187 }
 188
 189 static void niccy_reset(struct IsdnCardState *cs)
 190 {
 191         if (cs->subtyp == NICCY_PCI) {
 192                 int val;
 193
 194                 val = inl(cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
 195                 val |= PCI_IRQ_ENABLE;
 196                 outl(val, cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
 197         }
 198         inithscxisac(cs, 3);
 199 }
 200
 201 static int niccy_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 202 {
 203         u_long flags;
 204
 205         switch (mt) {
 206         case CARD_RESET:
 207                 spin_lock_irqsave(&cs->lock, flags);
 208                 niccy_reset(cs);
 209                 spin_unlock_irqrestore(&cs->lock, flags);
 210                 return 0;
 211         case CARD_RELEASE:
 212                 release_io_niccy(cs);
 213                 return 0;
 214         case CARD_INIT:
 215                 spin_lock_irqsave(&cs->lock, flags);
 216                 niccy_reset(cs);
 217                 spin_unlock_irqrestore(&cs->lock, flags);
 218                 return 0;
 219         case CARD_TEST:
 220                 return 0;
 221         }
 222         return 0;
 223 }
 224
 225 #ifdef __ISAPNP__
 226 static struct pnp_card *pnp_c = NULL;
 227 #endif
 228
 229 int setup_niccy(struct IsdnCard *card)
 230 {
 231         struct IsdnCardState *cs = card->cs;
 232         char tmp[64];
 233
 234         strcpy(tmp, niccy_revision);
 235         printk(KERN_INFO "HiSax: Niccy driver Rev. %s\n", HiSax_getrev(tmp));
 236         if (cs->typ != ISDN_CTYPE_NICCY)
 237                 return 0;
 238 #ifdef __ISAPNP__
 239         if (!card->para[1] && isapnp_present()) {
 240                 struct pnp_dev *pnp_d = NULL;
 241                 int err;
 242
 243                 pnp_c = pnp_find_card(ISAPNP_VENDOR('S', 'D', 'A'),
 244                                       ISAPNP_FUNCTION(0x0150), pnp_c);
 245                 if (pnp_c) {
 246                         pnp_d = pnp_find_dev(pnp_c,
 247                                              ISAPNP_VENDOR('S', 'D', 'A'),
 248                                              ISAPNP_FUNCTION(0x0150), pnp_d);
 249                         if (!pnp_d) {
 250                                 printk(KERN_ERR "NiccyPnP: PnP error card "
 251                                        "found, no device\n");
 252                                 return 0;
 253                         }
 254                         pnp_disable_dev(pnp_d);
 255                         err = pnp_activate_dev(pnp_d);
 256                         if (err < 0) {
 257                                 printk(KERN_WARNING "%s: pnp_activate_dev "
 258                                        "ret(%d)\n", __func__, err);
 259                                 return 0;
 260                         }
 261                         card->para[1] = pnp_port_start(pnp_d, 0);
 262                         card->para[2] = pnp_port_start(pnp_d, 1);
 263                         card->para[0] = pnp_irq(pnp_d, 0);
 264                         if (!card->para[0] || !card->para[1] ||
 265                             !card->para[2]) {
 266                                 printk(KERN_ERR "NiccyPnP:some resources are "
 267                                        "missing %ld/%lx/%lx\n",
 268                                        card->para[0], card->para[1],
 269                                        card->para[2]);
 270                                 pnp_disable_dev(pnp_d);
 271                                 return 0;
 272                         }
 273                 } else
 274                         printk(KERN_INFO "NiccyPnP: no ISAPnP card found\n");
 275         }
 276 #endif
 277         if (card->para[1]) {
 278                 cs->hw.niccy.isac = card->para[1] + ISAC_PNP;
 279                 cs->hw.niccy.hscx = card->para[1] + HSCX_PNP;
 280                 cs->hw.niccy.isac_ale = card->para[2] + ISAC_PNP;
 281                 cs->hw.niccy.hscx_ale = card->para[2] + HSCX_PNP;
 282                 cs->hw.niccy.cfg_reg = 0;
 283                 cs->subtyp = NICCY_PNP;
 284                 cs->irq = card->para[0];
 285                 if (!request_region(cs->hw.niccy.isac, 2, "niccy data")) {
 286                         printk(KERN_WARNING "HiSax: NICCY data port %x-%x "
 287                                "already in use\n",
 288                                cs->hw.niccy.isac, cs->hw.niccy.isac + 1);
 289                         return 0;
 290                 }
 291                 if (!request_region(cs->hw.niccy.isac_ale, 2, "niccy addr")) {
 292                         printk(KERN_WARNING "HiSax: NICCY address port %x-%x "
 293                                "already in use\n",
 294                                cs->hw.niccy.isac_ale,
 295                                cs->hw.niccy.isac_ale + 1);
 296                         release_region(cs->hw.niccy.isac, 2);
 297                         return 0;
 298                 }
 299         } else {
 300 #ifdef CONFIG_PCI
 301                 static struct pci_dev *niccy_dev;
 302
 303                 u_int pci_ioaddr;
 304                 cs->subtyp = 0;
 305                 if ((niccy_dev = hisax_find_pci_device(PCI_VENDOR_ID_SATSAGEM,
 306                                                        PCI_DEVICE_ID_SATSAGEM_NICCY,
 307                                                        niccy_dev))) {
 308                         if (pci_enable_device(niccy_dev))
 309                                 return 0;
 310                         /* get IRQ */
 311                         if (!niccy_dev->irq) {
 312                                 printk(KERN_WARNING
 313                                        "Niccy: No IRQ for PCI card found\n");
 314                                 return 0;
 315                         }
 316                         cs->irq = niccy_dev->irq;
 317                         cs->hw.niccy.cfg_reg = pci_resource_start(niccy_dev, 0);
 318                         if (!cs->hw.niccy.cfg_reg) {
 319                                 printk(KERN_WARNING
 320                                        "Niccy: No IO-Adr for PCI cfg found\n");
 321                                 return 0;
 322                         }
 323                         pci_ioaddr = pci_resource_start(niccy_dev, 1);
 324                         if (!pci_ioaddr) {
 325                                 printk(KERN_WARNING
 326                                        "Niccy: No IO-Adr for PCI card found\n");
 327                                 return 0;
 328                         }
 329                         cs->subtyp = NICCY_PCI;
 330                 } else {
 331                         printk(KERN_WARNING "Niccy: No PCI card found\n");
 332                         return 0;
 333                 }
 334                 cs->irq_flags |= IRQF_SHARED;
 335                 cs->hw.niccy.isac = pci_ioaddr + ISAC_PCI_DATA;
 336                 cs->hw.niccy.isac_ale = pci_ioaddr + ISAC_PCI_ADDR;
 337                 cs->hw.niccy.hscx = pci_ioaddr + HSCX_PCI_DATA;
 338                 cs->hw.niccy.hscx_ale = pci_ioaddr + HSCX_PCI_ADDR;
 339                 if (!request_region(cs->hw.niccy.isac, 4, "niccy")) {
 340                         printk(KERN_WARNING
 341                                "HiSax: NICCY data port %x-%x already in use\n",
 342                                cs->hw.niccy.isac, cs->hw.niccy.isac + 4);
 343                         return 0;
 344                 }
 345                 if (!request_region(cs->hw.niccy.cfg_reg, 0x40, "niccy pci")) {
 346                         printk(KERN_WARNING
 347                                "HiSax: NICCY pci port %x-%x already in use\n",
 348                                cs->hw.niccy.cfg_reg,
 349                                cs->hw.niccy.cfg_reg + 0x40);
 350                         release_region(cs->hw.niccy.isac, 4);
 351                         return 0;
 352                 }
 353 #else
 354                 printk(KERN_WARNING "Niccy: io0 0 and NO_PCI_BIOS\n");
 355                 printk(KERN_WARNING "Niccy: unable to config NICCY PCI\n");
 356                 return 0;
 357 #endif                          /* CONFIG_PCI */
 358         }
 359         printk(KERN_INFO "HiSax: NICCY %s config irq:%d data:0x%X ale:0x%X\n",
 360                (cs->subtyp == 1) ? "PnP" : "PCI",
 361                cs->irq, cs->hw.niccy.isac, cs->hw.niccy.isac_ale);
 362         setup_isac(cs);
 363         cs->readisac = &ReadISAC;
 364         cs->writeisac = &WriteISAC;
 365         cs->readisacfifo = &ReadISACfifo;
 366         cs->writeisacfifo = &WriteISACfifo;
 367         cs->BC_Read_Reg = &ReadHSCX;
 368         cs->BC_Write_Reg = &WriteHSCX;
 369         cs->BC_Send_Data = &hscx_fill_fifo;
 370         cs->cardmsg = &niccy_card_msg;
 371         cs->irq_func = &niccy_interrupt;
 372         ISACVersion(cs, "Niccy:");
 373         if (HscxVersion(cs, "Niccy:")) {
 374                 printk(KERN_WARNING "Niccy: wrong HSCX versions check IO "
 375                        "address\n");
 376                 release_io_niccy(cs);
 377                 return 0;
 378         }
 379         return 1;
 380 }