linux/drivers/isdn/hisax/niccy.c
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   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
  24static 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
  46static 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
  55static 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
  62static 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
  69static 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
  78static 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
  83static 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
  88static 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
  93static 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
  98static 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
 104static 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
 124static 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);
 142Start_HSCX:
 143        if (val)
 144                hscx_int_main(cs, val);
 145        val = readreg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_ISTA);
 146Start_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
 173static 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
 189static 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
 201static 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__
 226static struct pnp_card *pnp_c = NULL;
 227#endif
 228
 229int 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] == -1 || !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}
 381