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   1 /* $Id: avm_pci.c,v 1.29.2.4 2004/02/11 13:21:32 keil Exp $
   2  *
   3  * low level stuff for AVM Fritz!PCI and ISA PnP isdn cards
   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 AVM, Berlin for information
  12  *
  13  */
  14
  15 #include <linux/init.h>
  16 #include "hisax.h"
  17 #include "isac.h"
  18 #include "isdnl1.h"
  19 #include <linux/pci.h>
  20 #include <linux/isapnp.h>
  21 #include <linux/interrupt.h>
  22
  23 static const char *avm_pci_rev = "$Revision: 1.29.2.4 $";
  24
  25 #define  AVM_FRITZ_PCI          1
  26 #define  AVM_FRITZ_PNP          2
  27
  28 #define  HDLC_FIFO              0x0
  29 #define  HDLC_STATUS            0x4
  30
  31 #define  AVM_HDLC_1             0x00
  32 #define  AVM_HDLC_2             0x01
  33 #define  AVM_ISAC_FIFO          0x02
  34 #define  AVM_ISAC_REG_LOW       0x04
  35 #define  AVM_ISAC_REG_HIGH      0x06
  36
  37 #define  AVM_STATUS0_IRQ_ISAC   0x01
  38 #define  AVM_STATUS0_IRQ_HDLC   0x02
  39 #define  AVM_STATUS0_IRQ_TIMER  0x04
  40 #define  AVM_STATUS0_IRQ_MASK   0x07
  41
  42 #define  AVM_STATUS0_RESET      0x01
  43 #define  AVM_STATUS0_DIS_TIMER  0x02
  44 #define  AVM_STATUS0_RES_TIMER  0x04
  45 #define  AVM_STATUS0_ENA_IRQ    0x08
  46 #define  AVM_STATUS0_TESTBIT    0x10
  47
  48 #define  AVM_STATUS1_INT_SEL    0x0f
  49 #define  AVM_STATUS1_ENA_IOM    0x80
  50
  51 #define  HDLC_MODE_ITF_FLG      0x01
  52 #define  HDLC_MODE_TRANS        0x02
  53 #define  HDLC_MODE_CCR_7        0x04
  54 #define  HDLC_MODE_CCR_16       0x08
  55 #define  HDLC_MODE_TESTLOOP     0x80
  56
  57 #define  HDLC_INT_XPR           0x80
  58 #define  HDLC_INT_XDU           0x40
  59 #define  HDLC_INT_RPR           0x20
  60 #define  HDLC_INT_MASK          0xE0
  61
  62 #define  HDLC_STAT_RME          0x01
  63 #define  HDLC_STAT_RDO          0x10
  64 #define  HDLC_STAT_CRCVFRRAB    0x0E
  65 #define  HDLC_STAT_CRCVFR       0x06
  66 #define  HDLC_STAT_RML_MASK     0x3f00
  67
  68 #define  HDLC_CMD_XRS           0x80
  69 #define  HDLC_CMD_XME           0x01
  70 #define  HDLC_CMD_RRS           0x20
  71 #define  HDLC_CMD_XML_MASK      0x3f00
  72
  73
  74 /* Interface functions */
  75
  76 static u_char
  77 ReadISAC(struct IsdnCardState *cs, u_char offset)
  78 {
  79         register u_char idx = (offset > 0x2f) ? AVM_ISAC_REG_HIGH : AVM_ISAC_REG_LOW;
  80         register u_char val;
  81
  82         outb(idx, cs->hw.avm.cfg_reg + 4);
  83         val = inb(cs->hw.avm.isac + (offset & 0xf));
  84         return (val);
  85 }
  86
  87 static void
  88 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  89 {
  90         register u_char idx = (offset > 0x2f) ? AVM_ISAC_REG_HIGH : AVM_ISAC_REG_LOW;
  91
  92         outb(idx, cs->hw.avm.cfg_reg + 4);
  93         outb(value, cs->hw.avm.isac + (offset & 0xf));
  94 }
  95
  96 static void
  97 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  98 {
  99         outb(AVM_ISAC_FIFO, cs->hw.avm.cfg_reg + 4);
 100         insb(cs->hw.avm.isac, data, size);
 101 }
 102
 103 static void
 104 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
 105 {
 106         outb(AVM_ISAC_FIFO, cs->hw.avm.cfg_reg + 4);
 107         outsb(cs->hw.avm.isac, data, size);
 108 }
 109
 110 static inline u_int
 111 ReadHDLCPCI(struct IsdnCardState *cs, int chan, u_char offset)
 112 {
 113         register u_int idx = chan ? AVM_HDLC_2 : AVM_HDLC_1;
 114         register u_int val;
 115
 116         outl(idx, cs->hw.avm.cfg_reg + 4);
 117         val = inl(cs->hw.avm.isac + offset);
 118         return (val);
 119 }
 120
 121 static inline void
 122 WriteHDLCPCI(struct IsdnCardState *cs, int chan, u_char offset, u_int value)
 123 {
 124         register u_int idx = chan ? AVM_HDLC_2 : AVM_HDLC_1;
 125
 126         outl(idx, cs->hw.avm.cfg_reg + 4);
 127         outl(value, cs->hw.avm.isac + offset);
 128 }
 129
 130 static inline u_char
 131 ReadHDLCPnP(struct IsdnCardState *cs, int chan, u_char offset)
 132 {
 133         register u_char idx = chan ? AVM_HDLC_2 : AVM_HDLC_1;
 134         register u_char val;
 135
 136         outb(idx, cs->hw.avm.cfg_reg + 4);
 137         val = inb(cs->hw.avm.isac + offset);
 138         return (val);
 139 }
 140
 141 static inline void
 142 WriteHDLCPnP(struct IsdnCardState *cs, int chan, u_char offset, u_char value)
 143 {
 144         register u_char idx = chan ? AVM_HDLC_2 : AVM_HDLC_1;
 145
 146         outb(idx, cs->hw.avm.cfg_reg + 4);
 147         outb(value, cs->hw.avm.isac + offset);
 148 }
 149
 150 static u_char
 151 ReadHDLC_s(struct IsdnCardState *cs, int chan, u_char offset)
 152 {
 153         return(0xff & ReadHDLCPCI(cs, chan, offset));
 154 }
 155
 156 static void
 157 WriteHDLC_s(struct IsdnCardState *cs, int chan, u_char offset, u_char value)
 158 {
 159         WriteHDLCPCI(cs, chan, offset, value);
 160 }
 161
 162 static inline
 163 struct BCState *Sel_BCS(struct IsdnCardState *cs, int channel)
 164 {
 165         if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
 166                 return(&cs->bcs[0]);
 167         else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
 168                 return(&cs->bcs[1]);
 169         else
 170                 return(NULL);
 171 }
 172
 173 static void
 174 write_ctrl(struct BCState *bcs, int which) {
 175
 176         if (bcs->cs->debug & L1_DEB_HSCX)
 177                 debugl1(bcs->cs, "hdlc %c wr%x ctrl %x",
 178                         'A' + bcs->channel, which, bcs->hw.hdlc.ctrl.ctrl);
 179         if (bcs->cs->subtyp == AVM_FRITZ_PCI) {
 180                 WriteHDLCPCI(bcs->cs, bcs->channel, HDLC_STATUS, bcs->hw.hdlc.ctrl.ctrl);
 181         } else {
 182                 if (which & 4)
 183                         WriteHDLCPnP(bcs->cs, bcs->channel, HDLC_STATUS + 2,
 184                                 bcs->hw.hdlc.ctrl.sr.mode);
 185                 if (which & 2)
 186                         WriteHDLCPnP(bcs->cs, bcs->channel, HDLC_STATUS + 1,
 187                                 bcs->hw.hdlc.ctrl.sr.xml);
 188                 if (which & 1)
 189                         WriteHDLCPnP(bcs->cs, bcs->channel, HDLC_STATUS,
 190                                 bcs->hw.hdlc.ctrl.sr.cmd);
 191         }
 192 }
 193
 194 static void
 195 modehdlc(struct BCState *bcs, int mode, int bc)
 196 {
 197         struct IsdnCardState *cs = bcs->cs;
 198         int hdlc = bcs->channel;
 199
 200         if (cs->debug & L1_DEB_HSCX)
 201                 debugl1(cs, "hdlc %c mode %d --> %d ichan %d --> %d",
 202                         'A' + hdlc, bcs->mode, mode, hdlc, bc);
 203         bcs->hw.hdlc.ctrl.ctrl = 0;
 204         switch (mode) {
 205                 case (-1): /* used for init */
 206                         bcs->mode = 1;
 207                         bcs->channel = bc;
 208                         bc = 0;
 209                 case (L1_MODE_NULL):
 210                         if (bcs->mode == L1_MODE_NULL)
 211                                 return;
 212                         bcs->hw.hdlc.ctrl.sr.cmd  = HDLC_CMD_XRS | HDLC_CMD_RRS;
 213                         bcs->hw.hdlc.ctrl.sr.mode = HDLC_MODE_TRANS;
 214                         write_ctrl(bcs, 5);
 215                         bcs->mode = L1_MODE_NULL;
 216                         bcs->channel = bc;
 217                         break;
 218                 case (L1_MODE_TRANS):
 219                         bcs->mode = mode;
 220                         bcs->channel = bc;
 221                         bcs->hw.hdlc.ctrl.sr.cmd  = HDLC_CMD_XRS | HDLC_CMD_RRS;
 222                         bcs->hw.hdlc.ctrl.sr.mode = HDLC_MODE_TRANS;
 223                         write_ctrl(bcs, 5);
 224                         bcs->hw.hdlc.ctrl.sr.cmd = HDLC_CMD_XRS;
 225                         write_ctrl(bcs, 1);
 226                         bcs->hw.hdlc.ctrl.sr.cmd = 0;
 227                         schedule_event(bcs, B_XMTBUFREADY);
 228                         break;
 229                 case (L1_MODE_HDLC):
 230                         bcs->mode = mode;
 231                         bcs->channel = bc;
 232                         bcs->hw.hdlc.ctrl.sr.cmd  = HDLC_CMD_XRS | HDLC_CMD_RRS;
 233                         bcs->hw.hdlc.ctrl.sr.mode = HDLC_MODE_ITF_FLG;
 234                         write_ctrl(bcs, 5);
 235                         bcs->hw.hdlc.ctrl.sr.cmd = HDLC_CMD_XRS;
 236                         write_ctrl(bcs, 1);
 237                         bcs->hw.hdlc.ctrl.sr.cmd = 0;
 238                         schedule_event(bcs, B_XMTBUFREADY);
 239                         break;
 240         }
 241 }
 242
 243 static inline void
 244 hdlc_empty_fifo(struct BCState *bcs, int count)
 245 {
 246         register u_int *ptr;
 247         u_char *p;
 248         u_char idx = bcs->channel ? AVM_HDLC_2 : AVM_HDLC_1;
 249         int cnt=0;
 250         struct IsdnCardState *cs = bcs->cs;
 251
 252         if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
 253                 debugl1(cs, "hdlc_empty_fifo %d", count);
 254         if (bcs->hw.hdlc.rcvidx + count > HSCX_BUFMAX) {
 255                 if (cs->debug & L1_DEB_WARN)
 256                         debugl1(cs, "hdlc_empty_fifo: incoming packet too large");
 257                 return;
 258         }
 259         p = bcs->hw.hdlc.rcvbuf + bcs->hw.hdlc.rcvidx;
 260         ptr = (u_int *)p;
 261         bcs->hw.hdlc.rcvidx += count;
 262         if (cs->subtyp == AVM_FRITZ_PCI) {
 263                 outl(idx, cs->hw.avm.cfg_reg + 4);
 264                 while (cnt < count) {
 265 #ifdef __powerpc__
 266 #ifdef CONFIG_APUS
 267                         *ptr++ = in_le32((unsigned *)(cs->hw.avm.isac +_IO_BASE));
 268 #else
 269                         *ptr++ = in_be32((unsigned *)(cs->hw.avm.isac +_IO_BASE));
 270 #endif /* CONFIG_APUS */
 271 #else
 272                         *ptr++ = inl(cs->hw.avm.isac);
 273 #endif /* __powerpc__ */
 274                         cnt += 4;
 275                 }
 276         } else {
 277                 outb(idx, cs->hw.avm.cfg_reg + 4);
 278                 while (cnt < count) {
 279                         *p++ = inb(cs->hw.avm.isac);
 280                         cnt++;
 281                 }
 282         }
 283         if (cs->debug & L1_DEB_HSCX_FIFO) {
 284                 char *t = bcs->blog;
 285
 286                 if (cs->subtyp == AVM_FRITZ_PNP)
 287                         p = (u_char *) ptr;
 288                 t += sprintf(t, "hdlc_empty_fifo %c cnt %d",
 289                              bcs->channel ? 'B' : 'A', count);
 290                 QuickHex(t, p, count);
 291                 debugl1(cs, bcs->blog);
 292         }
 293 }
 294
 295 static inline void
 296 hdlc_fill_fifo(struct BCState *bcs)
 297 {
 298         struct IsdnCardState *cs = bcs->cs;
 299         int count, cnt =0;
 300         int fifo_size = 32;
 301         u_char *p;
 302         u_int *ptr;
 303
 304         if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
 305                 debugl1(cs, "hdlc_fill_fifo");
 306         if (!bcs->tx_skb)
 307                 return;
 308         if (bcs->tx_skb->len <= 0)
 309                 return;
 310
 311         bcs->hw.hdlc.ctrl.sr.cmd &= ~HDLC_CMD_XME;
 312         if (bcs->tx_skb->len > fifo_size) {
 313                 count = fifo_size;
 314         } else {
 315                 count = bcs->tx_skb->len;
 316                 if (bcs->mode != L1_MODE_TRANS)
 317                         bcs->hw.hdlc.ctrl.sr.cmd |= HDLC_CMD_XME;
 318         }
 319         if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
 320                 debugl1(cs, "hdlc_fill_fifo %d/%ld", count, bcs->tx_skb->len);
 321         p = bcs->tx_skb->data;
 322         ptr = (u_int *)p;
 323         skb_pull(bcs->tx_skb, count);
 324         bcs->tx_cnt -= count;
 325         bcs->hw.hdlc.count += count;
 326         bcs->hw.hdlc.ctrl.sr.xml = ((count == fifo_size) ? 0 : count);
 327         write_ctrl(bcs, 3);  /* sets the correct index too */
 328         if (cs->subtyp == AVM_FRITZ_PCI) {
 329                 while (cnt<count) {
 330 #ifdef __powerpc__
 331 #ifdef CONFIG_APUS
 332                         out_le32((unsigned *)(cs->hw.avm.isac +_IO_BASE), *ptr++);
 333 #else
 334                         out_be32((unsigned *)(cs->hw.avm.isac +_IO_BASE), *ptr++);
 335 #endif /* CONFIG_APUS */
 336 #else
 337                         outl(*ptr++, cs->hw.avm.isac);
 338 #endif /* __powerpc__ */
 339                         cnt += 4;
 340                 }
 341         } else {
 342                 while (cnt<count) {
 343                         outb(*p++, cs->hw.avm.isac);
 344                         cnt++;
 345                 }
 346         }
 347         if (cs->debug & L1_DEB_HSCX_FIFO) {
 348                 char *t = bcs->blog;
 349
 350                 if (cs->subtyp == AVM_FRITZ_PNP)
 351                         p = (u_char *) ptr;
 352                 t += sprintf(t, "hdlc_fill_fifo %c cnt %d",
 353                              bcs->channel ? 'B' : 'A', count);
 354                 QuickHex(t, p, count);
 355                 debugl1(cs, bcs->blog);
 356         }
 357 }
 358
 359 static void
 360 HDLC_irq(struct BCState *bcs, u_int stat) {
 361         int len;
 362         struct sk_buff *skb;
 363
 364         if (bcs->cs->debug & L1_DEB_HSCX)
 365                 debugl1(bcs->cs, "ch%d stat %#x", bcs->channel, stat);
 366         if (stat & HDLC_INT_RPR) {
 367                 if (stat & HDLC_STAT_RDO) {
 368                         if (bcs->cs->debug & L1_DEB_HSCX)
 369                                 debugl1(bcs->cs, "RDO");
 370                         else
 371                                 debugl1(bcs->cs, "ch%d stat %#x", bcs->channel, stat);
 372                         bcs->hw.hdlc.ctrl.sr.xml = 0;
 373                         bcs->hw.hdlc.ctrl.sr.cmd |= HDLC_CMD_RRS;
 374                         write_ctrl(bcs, 1);
 375                         bcs->hw.hdlc.ctrl.sr.cmd &= ~HDLC_CMD_RRS;
 376                         write_ctrl(bcs, 1);
 377                         bcs->hw.hdlc.rcvidx = 0;
 378                 } else {
 379                         if (!(len = (stat & HDLC_STAT_RML_MASK)>>8))
 380                                 len = 32;
 381                         hdlc_empty_fifo(bcs, len);
 382                         if ((stat & HDLC_STAT_RME) || (bcs->mode == L1_MODE_TRANS)) {
 383                                 if (((stat & HDLC_STAT_CRCVFRRAB)==HDLC_STAT_CRCVFR) ||
 384                                         (bcs->mode == L1_MODE_TRANS)) {
 385                                         if (!(skb = dev_alloc_skb(bcs->hw.hdlc.rcvidx)))
 386                                                 printk(KERN_WARNING "HDLC: receive out of memory\n");
 387                                         else {
 388                                                 memcpy(skb_put(skb, bcs->hw.hdlc.rcvidx),
 389                                                         bcs->hw.hdlc.rcvbuf, bcs->hw.hdlc.rcvidx);
 390                                                 skb_queue_tail(&bcs->rqueue, skb);
 391                                         }
 392                                         bcs->hw.hdlc.rcvidx = 0;
 393                                         schedule_event(bcs, B_RCVBUFREADY);
 394                                 } else {
 395                                         if (bcs->cs->debug & L1_DEB_HSCX)
 396                                                 debugl1(bcs->cs, "invalid frame");
 397                                         else
 398                                                 debugl1(bcs->cs, "ch%d invalid frame %#x", bcs->channel, stat);
 399                                         bcs->hw.hdlc.rcvidx = 0;
 400                                 }
 401                         }
 402                 }
 403         }
 404         if (stat & HDLC_INT_XDU) {
 405                 /* Here we lost an TX interrupt, so
 406                  * restart transmitting the whole frame.
 407                  */
 408                 if (bcs->tx_skb) {
 409                         skb_push(bcs->tx_skb, bcs->hw.hdlc.count);
 410                         bcs->tx_cnt += bcs->hw.hdlc.count;
 411                         bcs->hw.hdlc.count = 0;
 412                         if (bcs->cs->debug & L1_DEB_WARN)
 413                                 debugl1(bcs->cs, "ch%d XDU", bcs->channel);
 414                 } else if (bcs->cs->debug & L1_DEB_WARN)
 415                         debugl1(bcs->cs, "ch%d XDU without skb", bcs->channel);
 416                 bcs->hw.hdlc.ctrl.sr.xml = 0;
 417                 bcs->hw.hdlc.ctrl.sr.cmd |= HDLC_CMD_XRS;
 418                 write_ctrl(bcs, 1);
 419                 bcs->hw.hdlc.ctrl.sr.cmd &= ~HDLC_CMD_XRS;
 420                 write_ctrl(bcs, 1);
 421                 hdlc_fill_fifo(bcs);
 422         } else if (stat & HDLC_INT_XPR) {
 423                 if (bcs->tx_skb) {
 424                         if (bcs->tx_skb->len) {
 425                                 hdlc_fill_fifo(bcs);
 426                                 return;
 427                         } else {
 428                                 if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 429                                         (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 430                                         u_long  flags;
 431                                         spin_lock_irqsave(&bcs->aclock, flags);
 432                                         bcs->ackcnt += bcs->hw.hdlc.count;
 433                                         spin_unlock_irqrestore(&bcs->aclock, flags);
 434                                         schedule_event(bcs, B_ACKPENDING);
 435                                 }
 436                                 dev_kfree_skb_irq(bcs->tx_skb);
 437                                 bcs->hw.hdlc.count = 0;
 438                                 bcs->tx_skb = NULL;
 439                         }
 440                 }
 441                 if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
 442                         bcs->hw.hdlc.count = 0;
 443                         test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
 444                         hdlc_fill_fifo(bcs);
 445                 } else {
 446                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 447                         schedule_event(bcs, B_XMTBUFREADY);
 448                 }
 449         }
 450 }
 451
 452 static inline void
 453 HDLC_irq_main(struct IsdnCardState *cs)
 454 {
 455         u_int stat;
 456         struct BCState *bcs;
 457
 458         if (cs->subtyp == AVM_FRITZ_PCI) {
 459                 stat = ReadHDLCPCI(cs, 0, HDLC_STATUS);
 460         } else {
 461                 stat = ReadHDLCPnP(cs, 0, HDLC_STATUS);
 462                 if (stat & HDLC_INT_RPR)
 463                         stat |= (ReadHDLCPnP(cs, 0, HDLC_STATUS+1))<<8;
 464         }
 465         if (stat & HDLC_INT_MASK) {
 466                 if (!(bcs = Sel_BCS(cs, 0))) {
 467                         if (cs->debug)
 468                                 debugl1(cs, "hdlc spurious channel 0 IRQ");
 469                 } else
 470                         HDLC_irq(bcs, stat);
 471         }
 472         if (cs->subtyp == AVM_FRITZ_PCI) {
 473                 stat = ReadHDLCPCI(cs, 1, HDLC_STATUS);
 474         } else {
 475                 stat = ReadHDLCPnP(cs, 1, HDLC_STATUS);
 476                 if (stat & HDLC_INT_RPR)
 477                         stat |= (ReadHDLCPnP(cs, 1, HDLC_STATUS+1))<<8;
 478         }
 479         if (stat & HDLC_INT_MASK) {
 480                 if (!(bcs = Sel_BCS(cs, 1))) {
 481                         if (cs->debug)
 482                                 debugl1(cs, "hdlc spurious channel 1 IRQ");
 483                 } else
 484                         HDLC_irq(bcs, stat);
 485         }
 486 }
 487
 488 static void
 489 hdlc_l2l1(struct PStack *st, int pr, void *arg)
 490 {
 491         struct BCState *bcs = st->l1.bcs;
 492         struct sk_buff *skb = arg;
 493         u_long flags;
 494
 495         switch (pr) {
 496                 case (PH_DATA | REQUEST):
 497                         spin_lock_irqsave(&bcs->cs->lock, flags);
 498                         if (bcs->tx_skb) {
 499                                 skb_queue_tail(&bcs->squeue, skb);
 500                         } else {
 501                                 bcs->tx_skb = skb;
 502                                 test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
 503                                 bcs->hw.hdlc.count = 0;
 504                                 bcs->cs->BC_Send_Data(bcs);
 505                         }
 506                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
 507                         break;
 508                 case (PH_PULL | INDICATION):
 509                         spin_lock_irqsave(&bcs->cs->lock, flags);
 510                         if (bcs->tx_skb) {
 511                                 printk(KERN_WARNING "hdlc_l2l1: this shouldn't happen\n");
 512                         } else {
 513                                 test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
 514                                 bcs->tx_skb = skb;
 515                                 bcs->hw.hdlc.count = 0;
 516                                 bcs->cs->BC_Send_Data(bcs);
 517                         }
 518                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
 519                         break;
 520                 case (PH_PULL | REQUEST):
 521                         if (!bcs->tx_skb) {
 522                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
 523                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
 524                         } else
 525                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
 526                         break;
 527                 case (PH_ACTIVATE | REQUEST):
 528                         spin_lock_irqsave(&bcs->cs->lock, flags);
 529                         test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
 530                         modehdlc(bcs, st->l1.mode, st->l1.bc);
 531                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
 532                         l1_msg_b(st, pr, arg);
 533                         break;
 534                 case (PH_DEACTIVATE | REQUEST):
 535                         l1_msg_b(st, pr, arg);
 536                         break;
 537                 case (PH_DEACTIVATE | CONFIRM):
 538                         spin_lock_irqsave(&bcs->cs->lock, flags);
 539                         test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
 540                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 541                         modehdlc(bcs, 0, st->l1.bc);
 542                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
 543                         st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
 544                         break;
 545         }
 546 }
 547
 548 static void
 549 close_hdlcstate(struct BCState *bcs)
 550 {
 551         modehdlc(bcs, 0, 0);
 552         if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
 553                 kfree(bcs->hw.hdlc.rcvbuf);
 554                 bcs->hw.hdlc.rcvbuf = NULL;
 555                 kfree(bcs->blog);
 556                 bcs->blog = NULL;
 557                 skb_queue_purge(&bcs->rqueue);
 558                 skb_queue_purge(&bcs->squeue);
 559                 if (bcs->tx_skb) {
 560                         dev_kfree_skb_any(bcs->tx_skb);
 561                         bcs->tx_skb = NULL;
 562                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 563                 }
 564         }
 565 }
 566
 567 static int
 568 open_hdlcstate(struct IsdnCardState *cs, struct BCState *bcs)
 569 {
 570         if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
 571                 if (!(bcs->hw.hdlc.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) {
 572                         printk(KERN_WARNING
 573                                "HiSax: No memory for hdlc.rcvbuf\n");
 574                         return (1);
 575                 }
 576                 if (!(bcs->blog = kmalloc(MAX_BLOG_SPACE, GFP_ATOMIC))) {
 577                         printk(KERN_WARNING
 578                                 "HiSax: No memory for bcs->blog\n");
 579                         test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
 580                         kfree(bcs->hw.hdlc.rcvbuf);
 581                         bcs->hw.hdlc.rcvbuf = NULL;
 582                         return (2);
 583                 }
 584                 skb_queue_head_init(&bcs->rqueue);
 585                 skb_queue_head_init(&bcs->squeue);
 586         }
 587         bcs->tx_skb = NULL;
 588         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 589         bcs->event = 0;
 590         bcs->hw.hdlc.rcvidx = 0;
 591         bcs->tx_cnt = 0;
 592         return (0);
 593 }
 594
 595 static int
 596 setstack_hdlc(struct PStack *st, struct BCState *bcs)
 597 {
 598         bcs->channel = st->l1.bc;
 599         if (open_hdlcstate(st->l1.hardware, bcs))
 600                 return (-1);
 601         st->l1.bcs = bcs;
 602         st->l2.l2l1 = hdlc_l2l1;
 603         setstack_manager(st);
 604         bcs->st = st;
 605         setstack_l1_B(st);
 606         return (0);
 607 }
 608
 609 #if 0
 610 void __init
 611 clear_pending_hdlc_ints(struct IsdnCardState *cs)
 612 {
 613         u_int val;
 614
 615         if (cs->subtyp == AVM_FRITZ_PCI) {
 616                 val = ReadHDLCPCI(cs, 0, HDLC_STATUS);
 617                 debugl1(cs, "HDLC 1 STA %x", val);
 618                 val = ReadHDLCPCI(cs, 1, HDLC_STATUS);
 619                 debugl1(cs, "HDLC 2 STA %x", val);
 620         } else {
 621                 val = ReadHDLCPnP(cs, 0, HDLC_STATUS);
 622                 debugl1(cs, "HDLC 1 STA %x", val);
 623                 val = ReadHDLCPnP(cs, 0, HDLC_STATUS + 1);
 624                 debugl1(cs, "HDLC 1 RML %x", val);
 625                 val = ReadHDLCPnP(cs, 0, HDLC_STATUS + 2);
 626                 debugl1(cs, "HDLC 1 MODE %x", val);
 627                 val = ReadHDLCPnP(cs, 0, HDLC_STATUS + 3);
 628                 debugl1(cs, "HDLC 1 VIN %x", val);
 629                 val = ReadHDLCPnP(cs, 1, HDLC_STATUS);
 630                 debugl1(cs, "HDLC 2 STA %x", val);
 631                 val = ReadHDLCPnP(cs, 1, HDLC_STATUS + 1);
 632                 debugl1(cs, "HDLC 2 RML %x", val);
 633                 val = ReadHDLCPnP(cs, 1, HDLC_STATUS + 2);
 634                 debugl1(cs, "HDLC 2 MODE %x", val);
 635                 val = ReadHDLCPnP(cs, 1, HDLC_STATUS + 3);
 636                 debugl1(cs, "HDLC 2 VIN %x", val);
 637         }
 638 }
 639 #endif  /*  0  */
 640
 641 static void
 642 inithdlc(struct IsdnCardState *cs)
 643 {
 644         cs->bcs[0].BC_SetStack = setstack_hdlc;
 645         cs->bcs[1].BC_SetStack = setstack_hdlc;
 646         cs->bcs[0].BC_Close = close_hdlcstate;
 647         cs->bcs[1].BC_Close = close_hdlcstate;
 648         modehdlc(cs->bcs, -1, 0);
 649         modehdlc(cs->bcs + 1, -1, 1);
 650 }
 651
 652 static irqreturn_t
 653 avm_pcipnp_interrupt(int intno, void *dev_id)
 654 {
 655         struct IsdnCardState *cs = dev_id;
 656         u_long flags;
 657         u_char val;
 658         u_char sval;
 659
 660         spin_lock_irqsave(&cs->lock, flags);
 661         sval = inb(cs->hw.avm.cfg_reg + 2);
 662         if ((sval & AVM_STATUS0_IRQ_MASK) == AVM_STATUS0_IRQ_MASK) {
 663                 /* possible a shared  IRQ reqest */
 664                 spin_unlock_irqrestore(&cs->lock, flags);
 665                 return IRQ_NONE;
 666         }
 667         if (!(sval & AVM_STATUS0_IRQ_ISAC)) {
 668                 val = ReadISAC(cs, ISAC_ISTA);
 669                 isac_interrupt(cs, val);
 670         }
 671         if (!(sval & AVM_STATUS0_IRQ_HDLC)) {
 672                 HDLC_irq_main(cs);
 673         }
 674         WriteISAC(cs, ISAC_MASK, 0xFF);
 675         WriteISAC(cs, ISAC_MASK, 0x0);
 676         spin_unlock_irqrestore(&cs->lock, flags);
 677         return IRQ_HANDLED;
 678 }
 679
 680 static void
 681 reset_avmpcipnp(struct IsdnCardState *cs)
 682 {
 683         printk(KERN_INFO "AVM PCI/PnP: reset\n");
 684         outb(AVM_STATUS0_RESET | AVM_STATUS0_DIS_TIMER, cs->hw.avm.cfg_reg + 2);
 685         mdelay(10);
 686         outb(AVM_STATUS0_DIS_TIMER | AVM_STATUS0_RES_TIMER | AVM_STATUS0_ENA_IRQ, cs->hw.avm.cfg_reg + 2);
 687         outb(AVM_STATUS1_ENA_IOM | cs->irq, cs->hw.avm.cfg_reg + 3);
 688         mdelay(10);
 689         printk(KERN_INFO "AVM PCI/PnP: S1 %x\n", inb(cs->hw.avm.cfg_reg + 3));
 690 }
 691
 692 static int
 693 AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 694 {
 695         u_long flags;
 696
 697         switch (mt) {
 698                 case CARD_RESET:
 699                         spin_lock_irqsave(&cs->lock, flags);
 700                         reset_avmpcipnp(cs);
 701                         spin_unlock_irqrestore(&cs->lock, flags);
 702                         return(0);
 703                 case CARD_RELEASE:
 704                         outb(0, cs->hw.avm.cfg_reg + 2);
 705                         release_region(cs->hw.avm.cfg_reg, 32);
 706                         return(0);
 707                 case CARD_INIT:
 708                         spin_lock_irqsave(&cs->lock, flags);
 709                         reset_avmpcipnp(cs);
 710                         clear_pending_isac_ints(cs);
 711                         initisac(cs);
 712                         inithdlc(cs);
 713                         outb(AVM_STATUS0_DIS_TIMER | AVM_STATUS0_RES_TIMER,
 714                                 cs->hw.avm.cfg_reg + 2);
 715                         WriteISAC(cs, ISAC_MASK, 0);
 716                         outb(AVM_STATUS0_DIS_TIMER | AVM_STATUS0_RES_TIMER |
 717                                 AVM_STATUS0_ENA_IRQ, cs->hw.avm.cfg_reg + 2);
 718                         /* RESET Receiver and Transmitter */
 719                         WriteISAC(cs, ISAC_CMDR, 0x41);
 720                         spin_unlock_irqrestore(&cs->lock, flags);
 721                         return(0);
 722                 case CARD_TEST:
 723                         return(0);
 724         }
 725         return(0);
 726 }
 727
 728 static int __devinit avm_setup_rest(struct IsdnCardState *cs)
 729 {
 730         u_int val, ver;
 731
 732         cs->hw.avm.isac = cs->hw.avm.cfg_reg + 0x10;
 733         if (!request_region(cs->hw.avm.cfg_reg, 32,
 734                 (cs->subtyp == AVM_FRITZ_PCI) ? "avm PCI" : "avm PnP")) {
 735                 printk(KERN_WARNING
 736                        "HiSax: Fritz!PCI/PNP config port %x-%x already in use\n",
 737                        cs->hw.avm.cfg_reg,
 738                        cs->hw.avm.cfg_reg + 31);
 739                 return (0);
 740         }
 741         switch (cs->subtyp) {
 742           case AVM_FRITZ_PCI:
 743                 val = inl(cs->hw.avm.cfg_reg);
 744                 printk(KERN_INFO "AVM PCI: stat %#x\n", val);
 745                 printk(KERN_INFO "AVM PCI: Class %X Rev %d\n",
 746                         val & 0xff, (val>>8) & 0xff);
 747                 cs->BC_Read_Reg = &ReadHDLC_s;
 748                 cs->BC_Write_Reg = &WriteHDLC_s;
 749                 break;
 750           case AVM_FRITZ_PNP:
 751                 val = inb(cs->hw.avm.cfg_reg);
 752                 ver = inb(cs->hw.avm.cfg_reg + 1);
 753                 printk(KERN_INFO "AVM PnP: Class %X Rev %d\n", val, ver);
 754                 cs->BC_Read_Reg = &ReadHDLCPnP;
 755                 cs->BC_Write_Reg = &WriteHDLCPnP;
 756                 break;
 757           default:
 758                 printk(KERN_WARNING "AVM unknown subtype %d\n", cs->subtyp);
 759                 return(0);
 760         }
 761         printk(KERN_INFO "HiSax: %s config irq:%d base:0x%X\n",
 762                 (cs->subtyp == AVM_FRITZ_PCI) ? "AVM Fritz!PCI" : "AVM Fritz!PnP",
 763                 cs->irq, cs->hw.avm.cfg_reg);
 764
 765         setup_isac(cs);
 766         cs->readisac = &ReadISAC;
 767         cs->writeisac = &WriteISAC;
 768         cs->readisacfifo = &ReadISACfifo;
 769         cs->writeisacfifo = &WriteISACfifo;
 770         cs->BC_Send_Data = &hdlc_fill_fifo;
 771         cs->cardmsg = &AVM_card_msg;
 772         cs->irq_func = &avm_pcipnp_interrupt;
 773         cs->writeisac(cs, ISAC_MASK, 0xFF);
 774         ISACVersion(cs, (cs->subtyp == AVM_FRITZ_PCI) ? "AVM PCI:" : "AVM PnP:");
 775         return (1);
 776 }
 777
 778 #ifndef __ISAPNP__
 779
 780 static int __devinit avm_pnp_setup(struct IsdnCardState *cs)
 781 {
 782         return(1);      /* no-op: success */
 783 }
 784
 785 #else
 786
 787 static struct pnp_card *pnp_avm_c __devinitdata = NULL;
 788
 789 static int __devinit avm_pnp_setup(struct IsdnCardState *cs)
 790 {
 791         struct pnp_dev *pnp_avm_d = NULL;
 792
 793         if (!isapnp_present())
 794                 return(1);      /* no-op: success */
 795
 796         if ((pnp_avm_c = pnp_find_card(
 797                 ISAPNP_VENDOR('A', 'V', 'M'),
 798                 ISAPNP_FUNCTION(0x0900), pnp_avm_c))) {
 799                 if ((pnp_avm_d = pnp_find_dev(pnp_avm_c,
 800                         ISAPNP_VENDOR('A', 'V', 'M'),
 801                         ISAPNP_FUNCTION(0x0900), pnp_avm_d))) {
 802                         int err;
 803
 804                         pnp_disable_dev(pnp_avm_d);
 805                         err = pnp_activate_dev(pnp_avm_d);
 806                         if (err<0) {
 807                                 printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n",
 808                                         __FUNCTION__, err);
 809                                 return(0);
 810                         }
 811                         cs->hw.avm.cfg_reg =
 812                                 pnp_port_start(pnp_avm_d, 0);
 813                         cs->irq = pnp_irq(pnp_avm_d, 0);
 814                         if (!cs->irq) {
 815                                 printk(KERN_ERR "FritzPnP:No IRQ\n");
 816                                 return(0);
 817                         }
 818                         if (!cs->hw.avm.cfg_reg) {
 819                                 printk(KERN_ERR "FritzPnP:No IO address\n");
 820                                 return(0);
 821                         }
 822                         cs->subtyp = AVM_FRITZ_PNP;
 823
 824                         return (2);     /* goto 'ready' label */
 825                 }
 826         }
 827
 828         return (1);
 829 }
 830
 831 #endif /* __ISAPNP__ */
 832
 833 #ifndef CONFIG_PCI
 834
 835 static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 836 {
 837         return(1);      /* no-op: success */
 838 }
 839
 840 #else
 841
 842 static struct pci_dev *dev_avm __devinitdata = NULL;
 843
 844 static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 845 {
 846         if ((dev_avm = pci_find_device(PCI_VENDOR_ID_AVM,
 847                 PCI_DEVICE_ID_AVM_A1, dev_avm))) {
 848
 849                 if (pci_enable_device(dev_avm))
 850                         return(0);
 851
 852                 cs->irq = dev_avm->irq;
 853                 if (!cs->irq) {
 854                         printk(KERN_ERR "FritzPCI: No IRQ for PCI card found\n");
 855                         return(0);
 856                 }
 857
 858                 cs->hw.avm.cfg_reg = pci_resource_start(dev_avm, 1);
 859                 if (!cs->hw.avm.cfg_reg) {
 860                         printk(KERN_ERR "FritzPCI: No IO-Adr for PCI card found\n");
 861                         return(0);
 862                 }
 863
 864                 cs->subtyp = AVM_FRITZ_PCI;
 865         } else {
 866                 printk(KERN_WARNING "FritzPCI: No PCI card found\n");
 867                 return(0);
 868         }
 869
 870         cs->irq_flags |= IRQF_SHARED;
 871
 872         return (1);
 873 }
 874
 875 #endif /* CONFIG_PCI */
 876
 877 int __devinit
 878 setup_avm_pcipnp(struct IsdnCard *card)
 879 {
 880         struct IsdnCardState *cs = card->cs;
 881         char tmp[64];
 882         int rc;
 883
 884         strcpy(tmp, avm_pci_rev);
 885         printk(KERN_INFO "HiSax: AVM PCI driver Rev. %s\n", HiSax_getrev(tmp));
 886
 887         if (cs->typ != ISDN_CTYPE_FRITZPCI)
 888                 return (0);
 889
 890         if (card->para[1]) {
 891                 /* old manual method */
 892                 cs->hw.avm.cfg_reg = card->para[1];
 893                 cs->irq = card->para[0];
 894                 cs->subtyp = AVM_FRITZ_PNP;
 895                 goto ready;
 896         }
 897
 898         rc = avm_pnp_setup(cs);
 899         if (rc < 1)
 900                 return (0);
 901         if (rc == 2)
 902                 goto ready;
 903
 904         rc = avm_pci_setup(cs);
 905         if (rc < 1)
 906                 return (0);
 907
 908 ready:
 909         return avm_setup_rest(cs);
 910 }