drivers/isdn/hisax/avm_pci.c

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