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