drivers/isdn/hisax/hisax_fcpcipnp.c

   1 /*
   2  * Driver for AVM Fritz!PCI, Fritz!PCI v2, Fritz!PnP ISDN cards
   3  *
   4  * Author       Kai Germaschewski
   5  * Copyright    2001 by Kai Germaschewski  <kai.germaschewski@gmx.de>
   6  *              2001 by Karsten Keil       <keil@isdn4linux.de>
   7  *
   8  * based upon Karsten Keil's original avm_pci.c driver
   9  *
  10  * This software may be used and distributed according to the terms
  11  * of the GNU General Public License, incorporated herein by reference.
  12  *
  13  * Thanks to Wizard Computersysteme GmbH, Bremervoerde and
  14  *           SoHaNet Technology GmbH, Berlin
  15  * for supporting the development of this driver
  16  */
  17
  18
  19 /* TODO:
  20  *
  21  * o POWER PC
  22  * o clean up debugging
  23  * o tx_skb at PH_DEACTIVATE time
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/init.h>
  28 #include <linux/pci.h>
  29 #include <linux/isapnp.h>
  30 #include <linux/kmod.h>
  31 #include <linux/slab.h>
  32 #include <linux/skbuff.h>
  33 #include <linux/netdevice.h>
  34 #include <linux/delay.h>
  35
  36 #include <asm/io.h>
  37
  38 #include "hisax_fcpcipnp.h"
  39
  40 // debugging cruft
  41 #define __debug_variable debug
  42 #include "hisax_debug.h"
  43
  44 #ifdef CONFIG_HISAX_DEBUG
  45 static int debug = 0;
  46 /* static int hdlcfifosize = 32; */
  47 module_param(debug, int, 0);
  48 /* module_param(hdlcfifosize, int, 0); */
  49 #endif
  50
  51 MODULE_AUTHOR("Kai Germaschewski <kai.germaschewski@gmx.de>/Karsten Keil <kkeil@suse.de>");
  52 MODULE_DESCRIPTION("AVM Fritz!PCI/PnP ISDN driver");
  53
  54 static struct pci_device_id fcpci_ids[] = {
  55         { .vendor      = PCI_VENDOR_ID_AVM,
  56           .device      = PCI_DEVICE_ID_AVM_A1,
  57           .subvendor   = PCI_ANY_ID,
  58           .subdevice   = PCI_ANY_ID,
  59           .driver_data = (unsigned long) "Fritz!Card PCI",
  60         },
  61         { .vendor      = PCI_VENDOR_ID_AVM,
  62           .device      = PCI_DEVICE_ID_AVM_A1_V2,
  63           .subvendor   = PCI_ANY_ID,
  64           .subdevice   = PCI_ANY_ID,
  65           .driver_data = (unsigned long) "Fritz!Card PCI v2" },
  66         {}
  67 };
  68
  69 MODULE_DEVICE_TABLE(pci, fcpci_ids);
  70
  71 #ifdef CONFIG_PNP
  72 static struct pnp_device_id fcpnp_ids[] __devinitdata = {
  73         {
  74                 .id             = "AVM0900",
  75                 .driver_data    = (unsigned long) "Fritz!Card PnP",
  76         },
  77         { .id = "" }
  78 };
  79
  80 MODULE_DEVICE_TABLE(pnp, fcpnp_ids);
  81 #endif
  82
  83 static int protocol = 2;       /* EURO-ISDN Default */
  84 module_param(protocol, int, 0);
  85 MODULE_LICENSE("GPL");
  86
  87 // ----------------------------------------------------------------------
  88
  89 #define  AVM_INDEX              0x04
  90 #define  AVM_DATA               0x10
  91
  92 #define  AVM_IDX_HDLC_1         0x00
  93 #define  AVM_IDX_HDLC_2         0x01
  94 #define  AVM_IDX_ISAC_FIFO      0x02
  95 #define  AVM_IDX_ISAC_REG_LOW   0x04
  96 #define  AVM_IDX_ISAC_REG_HIGH  0x06
  97
  98 #define  AVM_STATUS0            0x02
  99
 100 #define  AVM_STATUS0_IRQ_ISAC   0x01
 101 #define  AVM_STATUS0_IRQ_HDLC   0x02
 102 #define  AVM_STATUS0_IRQ_TIMER  0x04
 103 #define  AVM_STATUS0_IRQ_MASK   0x07
 104
 105 #define  AVM_STATUS0_RESET      0x01
 106 #define  AVM_STATUS0_DIS_TIMER  0x02
 107 #define  AVM_STATUS0_RES_TIMER  0x04
 108 #define  AVM_STATUS0_ENA_IRQ    0x08
 109 #define  AVM_STATUS0_TESTBIT    0x10
 110
 111 #define  AVM_STATUS1            0x03
 112 #define  AVM_STATUS1_ENA_IOM    0x80
 113
 114 #define  HDLC_FIFO              0x0
 115 #define  HDLC_STATUS            0x4
 116 #define  HDLC_CTRL              0x4
 117
 118 #define  HDLC_MODE_ITF_FLG      0x01
 119 #define  HDLC_MODE_TRANS        0x02
 120 #define  HDLC_MODE_CCR_7        0x04
 121 #define  HDLC_MODE_CCR_16       0x08
 122 #define  HDLC_MODE_TESTLOOP     0x80
 123
 124 #define  HDLC_INT_XPR           0x80
 125 #define  HDLC_INT_XDU           0x40
 126 #define  HDLC_INT_RPR           0x20
 127 #define  HDLC_INT_MASK          0xE0
 128
 129 #define  HDLC_STAT_RME          0x01
 130 #define  HDLC_STAT_RDO          0x10
 131 #define  HDLC_STAT_CRCVFRRAB    0x0E
 132 #define  HDLC_STAT_CRCVFR       0x06
 133 #define  HDLC_STAT_RML_MASK     0xff00
 134
 135 #define  HDLC_CMD_XRS           0x80
 136 #define  HDLC_CMD_XME           0x01
 137 #define  HDLC_CMD_RRS           0x20
 138 #define  HDLC_CMD_XML_MASK      0xff00
 139
 140 #define  AVM_HDLC_FIFO_1        0x10
 141 #define  AVM_HDLC_FIFO_2        0x18
 142
 143 #define  AVM_HDLC_STATUS_1      0x14
 144 #define  AVM_HDLC_STATUS_2      0x1c
 145
 146 #define  AVM_ISACSX_INDEX       0x04
 147 #define  AVM_ISACSX_DATA        0x08
 148
 149 // ----------------------------------------------------------------------
 150 // Fritz!PCI
 151
 152 static unsigned char fcpci_read_isac(struct isac *isac, unsigned char offset)
 153 {
 154         struct fritz_adapter *adapter = isac->priv;
 155         unsigned char idx = (offset > 0x2f) ?
 156                 AVM_IDX_ISAC_REG_HIGH : AVM_IDX_ISAC_REG_LOW;
 157         unsigned char val;
 158         unsigned long flags;
 159
 160         spin_lock_irqsave(&adapter->hw_lock, flags);
 161         outb(idx, adapter->io + AVM_INDEX);
 162         val = inb(adapter->io + AVM_DATA + (offset & 0xf));
 163         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 164         DBG(0x1000, " port %#x, value %#x",
 165             offset, val);
 166         return val;
 167 }
 168
 169 static void fcpci_write_isac(struct isac *isac, unsigned char offset,
 170                              unsigned char value)
 171 {
 172         struct fritz_adapter *adapter = isac->priv;
 173         unsigned char idx = (offset > 0x2f) ?
 174                 AVM_IDX_ISAC_REG_HIGH : AVM_IDX_ISAC_REG_LOW;
 175         unsigned long flags;
 176
 177         DBG(0x1000, " port %#x, value %#x",
 178             offset, value);
 179         spin_lock_irqsave(&adapter->hw_lock, flags);
 180         outb(idx, adapter->io + AVM_INDEX);
 181         outb(value, adapter->io + AVM_DATA + (offset & 0xf));
 182         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 183 }
 184
 185 static void fcpci_read_isac_fifo(struct isac *isac, unsigned char * data,
 186                                  int size)
 187 {
 188         struct fritz_adapter *adapter = isac->priv;
 189         unsigned long flags;
 190
 191         spin_lock_irqsave(&adapter->hw_lock, flags);
 192         outb(AVM_IDX_ISAC_FIFO, adapter->io + AVM_INDEX);
 193         insb(adapter->io + AVM_DATA, data, size);
 194         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 195 }
 196
 197 static void fcpci_write_isac_fifo(struct isac *isac, unsigned char * data,
 198                                   int size)
 199 {
 200         struct fritz_adapter *adapter = isac->priv;
 201         unsigned long flags;
 202
 203         spin_lock_irqsave(&adapter->hw_lock, flags);
 204         outb(AVM_IDX_ISAC_FIFO, adapter->io + AVM_INDEX);
 205         outsb(adapter->io + AVM_DATA, data, size);
 206         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 207 }
 208
 209 static u32 fcpci_read_hdlc_status(struct fritz_adapter *adapter, int nr)
 210 {
 211         u32 val;
 212         int idx = nr ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
 213         unsigned long flags;
 214
 215         spin_lock_irqsave(&adapter->hw_lock, flags);
 216         outl(idx, adapter->io + AVM_INDEX);
 217         val = inl(adapter->io + AVM_DATA + HDLC_STATUS);
 218         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 219         return val;
 220 }
 221
 222 static void __fcpci_write_ctrl(struct fritz_bcs *bcs, int which)
 223 {
 224         struct fritz_adapter *adapter = bcs->adapter;
 225         int idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
 226
 227         DBG(0x40, "hdlc %c wr%x ctrl %x",
 228             'A' + bcs->channel, which, bcs->ctrl.ctrl);
 229
 230         outl(idx, adapter->io + AVM_INDEX);
 231         outl(bcs->ctrl.ctrl, adapter->io + AVM_DATA + HDLC_CTRL);
 232 }
 233
 234 static void fcpci_write_ctrl(struct fritz_bcs *bcs, int which)
 235 {
 236         struct fritz_adapter *adapter = bcs->adapter;
 237         unsigned long flags;
 238
 239         spin_lock_irqsave(&adapter->hw_lock, flags);
 240         __fcpci_write_ctrl(bcs, which);
 241         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 242 }
 243
 244 // ----------------------------------------------------------------------
 245 // Fritz!PCI v2
 246
 247 static unsigned char fcpci2_read_isac(struct isac *isac, unsigned char offset)
 248 {
 249         struct fritz_adapter *adapter = isac->priv;
 250         unsigned char val;
 251         unsigned long flags;
 252
 253         spin_lock_irqsave(&adapter->hw_lock, flags);
 254         outl(offset, adapter->io + AVM_ISACSX_INDEX);
 255         val = inl(adapter->io + AVM_ISACSX_DATA);
 256         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 257         DBG(0x1000, " port %#x, value %#x",
 258             offset, val);
 259
 260         return val;
 261 }
 262
 263 static void fcpci2_write_isac(struct isac *isac, unsigned char offset,
 264                               unsigned char value)
 265 {
 266         struct fritz_adapter *adapter = isac->priv;
 267         unsigned long flags;
 268
 269         DBG(0x1000, " port %#x, value %#x",
 270             offset, value);
 271         spin_lock_irqsave(&adapter->hw_lock, flags);
 272         outl(offset, adapter->io + AVM_ISACSX_INDEX);
 273         outl(value, adapter->io + AVM_ISACSX_DATA);
 274         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 275 }
 276
 277 static void fcpci2_read_isac_fifo(struct isac *isac, unsigned char * data,
 278                                   int size)
 279 {
 280         struct fritz_adapter *adapter = isac->priv;
 281         int i;
 282         unsigned long flags;
 283
 284         spin_lock_irqsave(&adapter->hw_lock, flags);
 285         outl(0, adapter->io + AVM_ISACSX_INDEX);
 286         for (i = 0; i < size; i++)
 287                 data[i] = inl(adapter->io + AVM_ISACSX_DATA);
 288         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 289 }
 290
 291 static void fcpci2_write_isac_fifo(struct isac *isac, unsigned char * data,
 292                                    int size)
 293 {
 294         struct fritz_adapter *adapter = isac->priv;
 295         int i;
 296         unsigned long flags;
 297
 298         spin_lock_irqsave(&adapter->hw_lock, flags);
 299         outl(0, adapter->io + AVM_ISACSX_INDEX);
 300         for (i = 0; i < size; i++)
 301                 outl(data[i], adapter->io + AVM_ISACSX_DATA);
 302         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 303 }
 304
 305 static u32 fcpci2_read_hdlc_status(struct fritz_adapter *adapter, int nr)
 306 {
 307         int offset = nr ? AVM_HDLC_STATUS_2 : AVM_HDLC_STATUS_1;
 308
 309         return inl(adapter->io + offset);
 310 }
 311
 312 static void fcpci2_write_ctrl(struct fritz_bcs *bcs, int which)
 313 {
 314         struct fritz_adapter *adapter = bcs->adapter;
 315         int offset = bcs->channel ? AVM_HDLC_STATUS_2 : AVM_HDLC_STATUS_1;
 316
 317         DBG(0x40, "hdlc %c wr%x ctrl %x",
 318             'A' + bcs->channel, which, bcs->ctrl.ctrl);
 319
 320         outl(bcs->ctrl.ctrl, adapter->io + offset);
 321 }
 322
 323 // ----------------------------------------------------------------------
 324 // Fritz!PnP (ISAC access as for Fritz!PCI)
 325
 326 static u32 fcpnp_read_hdlc_status(struct fritz_adapter *adapter, int nr)
 327 {
 328         unsigned char idx = nr ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
 329         u32 val;
 330         unsigned long flags;
 331
 332         spin_lock_irqsave(&adapter->hw_lock, flags);
 333         outb(idx, adapter->io + AVM_INDEX);
 334         val = inb(adapter->io + AVM_DATA + HDLC_STATUS);
 335         if (val & HDLC_INT_RPR)
 336                 val |= inb(adapter->io + AVM_DATA + HDLC_STATUS + 1) << 8;
 337         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 338         return val;
 339 }
 340
 341 static void __fcpnp_write_ctrl(struct fritz_bcs *bcs, int which)
 342 {
 343         struct fritz_adapter *adapter = bcs->adapter;
 344         unsigned char idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
 345
 346         DBG(0x40, "hdlc %c wr%x ctrl %x",
 347             'A' + bcs->channel, which, bcs->ctrl.ctrl);
 348
 349         outb(idx, adapter->io + AVM_INDEX);
 350         if (which & 4)
 351                 outb(bcs->ctrl.sr.mode,
 352                      adapter->io + AVM_DATA + HDLC_STATUS + 2);
 353         if (which & 2)
 354                 outb(bcs->ctrl.sr.xml,
 355                      adapter->io + AVM_DATA + HDLC_STATUS + 1);
 356         if (which & 1)
 357                 outb(bcs->ctrl.sr.cmd,
 358                      adapter->io + AVM_DATA + HDLC_STATUS + 0);
 359 }
 360
 361 static void fcpnp_write_ctrl(struct fritz_bcs *bcs, int which)
 362 {
 363         struct fritz_adapter *adapter = bcs->adapter;
 364         unsigned long flags;
 365
 366         spin_lock_irqsave(&adapter->hw_lock, flags);
 367         __fcpnp_write_ctrl(bcs, which);
 368         spin_unlock_irqrestore(&adapter->hw_lock, flags);
 369 }
 370
 371 // ----------------------------------------------------------------------
 372
 373 static inline void B_L1L2(struct fritz_bcs *bcs, int pr, void *arg)
 374 {
 375         struct hisax_if *ifc = (struct hisax_if *) &bcs->b_if;
 376
 377         DBG(2, "pr %#x", pr);
 378         ifc->l1l2(ifc, pr, arg);
 379 }
 380
 381 static void hdlc_fill_fifo(struct fritz_bcs *bcs)
 382 {
 383         struct fritz_adapter *adapter = bcs->adapter;
 384         struct sk_buff *skb = bcs->tx_skb;
 385         int count;
 386         unsigned long flags;
 387         unsigned char *p;
 388
 389         DBG(0x40, "hdlc_fill_fifo");
 390
 391         BUG_ON(skb->len == 0);
 392
 393         bcs->ctrl.sr.cmd &= ~HDLC_CMD_XME;
 394         if (bcs->tx_skb->len > bcs->fifo_size) {
 395                 count = bcs->fifo_size;
 396         } else {
 397                 count = bcs->tx_skb->len;
 398                 if (bcs->mode != L1_MODE_TRANS)
 399                         bcs->ctrl.sr.cmd |= HDLC_CMD_XME;
 400         }
 401         DBG(0x40, "hdlc_fill_fifo %d/%d", count, bcs->tx_skb->len);
 402         p = bcs->tx_skb->data;
 403         skb_pull(bcs->tx_skb, count);
 404         bcs->tx_cnt += count;
 405         bcs->ctrl.sr.xml = ((count == bcs->fifo_size) ? 0 : count);
 406
 407         switch (adapter->type) {
 408         case AVM_FRITZ_PCI:
 409                 spin_lock_irqsave(&adapter->hw_lock, flags);
 410                 // sets the correct AVM_INDEX, too
 411                 __fcpci_write_ctrl(bcs, 3);
 412                 outsl(adapter->io + AVM_DATA + HDLC_FIFO,
 413                       p, (count + 3) / 4);
 414                 spin_unlock_irqrestore(&adapter->hw_lock, flags);
 415                 break;
 416         case AVM_FRITZ_PCIV2:
 417                 fcpci2_write_ctrl(bcs, 3);
 418                 outsl(adapter->io +
 419                       (bcs->channel ? AVM_HDLC_FIFO_2 : AVM_HDLC_FIFO_1),
 420                       p, (count + 3) / 4);
 421                 break;
 422         case AVM_FRITZ_PNP:
 423                 spin_lock_irqsave(&adapter->hw_lock, flags);
 424                 // sets the correct AVM_INDEX, too
 425                 __fcpnp_write_ctrl(bcs, 3);
 426                 outsb(adapter->io + AVM_DATA, p, count);
 427                 spin_unlock_irqrestore(&adapter->hw_lock, flags);
 428                 break;
 429         }
 430 }
 431
 432 static inline void hdlc_empty_fifo(struct fritz_bcs *bcs, int count)
 433 {
 434         struct fritz_adapter *adapter = bcs->adapter;
 435         unsigned char *p;
 436         unsigned char idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
 437
 438         DBG(0x10, "hdlc_empty_fifo %d", count);
 439         if (bcs->rcvidx + count > HSCX_BUFMAX) {
 440                 DBG(0x10, "hdlc_empty_fifo: incoming packet too large");
 441                 return;
 442         }
 443         p = bcs->rcvbuf + bcs->rcvidx;
 444         bcs->rcvidx += count;
 445         switch (adapter->type) {
 446         case AVM_FRITZ_PCI:
 447                 spin_lock(&adapter->hw_lock);
 448                 outl(idx, adapter->io + AVM_INDEX);
 449                 insl(adapter->io + AVM_DATA + HDLC_FIFO,
 450                      p, (count + 3) / 4);
 451                 spin_unlock(&adapter->hw_lock);
 452                 break;
 453         case AVM_FRITZ_PCIV2:
 454                 insl(adapter->io +
 455                      (bcs->channel ? AVM_HDLC_FIFO_2 : AVM_HDLC_FIFO_1),
 456                      p, (count + 3) / 4);
 457                 break;
 458         case AVM_FRITZ_PNP:
 459                 spin_lock(&adapter->hw_lock);
 460                 outb(idx, adapter->io + AVM_INDEX);
 461                 insb(adapter->io + AVM_DATA, p, count);
 462                 spin_unlock(&adapter->hw_lock);
 463                 break;
 464         }
 465 }
 466
 467 static inline void hdlc_rpr_irq(struct fritz_bcs *bcs, u32 stat)
 468 {
 469         struct fritz_adapter *adapter = bcs->adapter;
 470         struct sk_buff *skb;
 471         int len;
 472
 473         if (stat & HDLC_STAT_RDO) {
 474                 DBG(0x10, "RDO");
 475                 bcs->ctrl.sr.xml = 0;
 476                 bcs->ctrl.sr.cmd |= HDLC_CMD_RRS;
 477                 adapter->write_ctrl(bcs, 1);
 478                 bcs->ctrl.sr.cmd &= ~HDLC_CMD_RRS;
 479                 adapter->write_ctrl(bcs, 1);
 480                 bcs->rcvidx = 0;
 481                 return;
 482         }
 483
 484         len = (stat & HDLC_STAT_RML_MASK) >> 8;
 485         if (len == 0)
 486                 len = bcs->fifo_size;
 487
 488         hdlc_empty_fifo(bcs, len);
 489
 490         if ((stat & HDLC_STAT_RME) || (bcs->mode == L1_MODE_TRANS)) {
 491                 if (((stat & HDLC_STAT_CRCVFRRAB)== HDLC_STAT_CRCVFR) ||
 492                     (bcs->mode == L1_MODE_TRANS)) {
 493                         skb = dev_alloc_skb(bcs->rcvidx);
 494                         if (!skb) {
 495                                 printk(KERN_WARNING "HDLC: receive out of memory\n");
 496                         } else {
 497                                 memcpy(skb_put(skb, bcs->rcvidx), bcs->rcvbuf,
 498                                        bcs->rcvidx);
 499                                 DBG_SKB(1, skb);
 500                                 B_L1L2(bcs, PH_DATA | INDICATION, skb);
 501                         }
 502                         bcs->rcvidx = 0;
 503                 } else {
 504                         DBG(0x10, "ch%d invalid frame %#x",
 505                             bcs->channel, stat);
 506                         bcs->rcvidx = 0;
 507                 }
 508         }
 509 }
 510
 511 static inline void hdlc_xdu_irq(struct fritz_bcs *bcs)
 512 {
 513         struct fritz_adapter *adapter = bcs->adapter;
 514
 515
 516         /* Here we lost an TX interrupt, so
 517          * restart transmitting the whole frame.
 518          */
 519         bcs->ctrl.sr.xml = 0;
 520         bcs->ctrl.sr.cmd |= HDLC_CMD_XRS;
 521         adapter->write_ctrl(bcs, 1);
 522         bcs->ctrl.sr.cmd &= ~HDLC_CMD_XRS;
 523
 524         if (!bcs->tx_skb) {
 525                 DBG(0x10, "XDU without skb");
 526                 adapter->write_ctrl(bcs, 1);
 527                 return;
 528         }
 529         /* only hdlc restarts the frame, transparent mode must continue */
 530         if (bcs->mode == L1_MODE_HDLC) {
 531                 skb_push(bcs->tx_skb, bcs->tx_cnt);
 532                 bcs->tx_cnt = 0;
 533         }
 534 }
 535
 536 static inline void hdlc_xpr_irq(struct fritz_bcs *bcs)
 537 {
 538         struct sk_buff *skb;
 539
 540         skb = bcs->tx_skb;
 541         if (!skb)
 542                 return;
 543
 544         if (skb->len) {
 545                 hdlc_fill_fifo(bcs);
 546                 return;
 547         }
 548         bcs->tx_cnt = 0;
 549         bcs->tx_skb = NULL;
 550         B_L1L2(bcs, PH_DATA | CONFIRM, (void *)(unsigned long)skb->truesize);
 551         dev_kfree_skb_irq(skb);
 552 }
 553
 554 static void hdlc_irq_one(struct fritz_bcs *bcs, u32 stat)
 555 {
 556         DBG(0x10, "ch%d stat %#x", bcs->channel, stat);
 557         if (stat & HDLC_INT_RPR) {
 558                 DBG(0x10, "RPR");
 559                 hdlc_rpr_irq(bcs, stat);
 560         }
 561         if (stat & HDLC_INT_XDU) {
 562                 DBG(0x10, "XDU");
 563                 hdlc_xdu_irq(bcs);
 564                 hdlc_xpr_irq(bcs);
 565                 return;
 566         }
 567         if (stat & HDLC_INT_XPR) {
 568                 DBG(0x10, "XPR");
 569                 hdlc_xpr_irq(bcs);
 570         }
 571 }
 572
 573 static inline void hdlc_irq(struct fritz_adapter *adapter)
 574 {
 575         int nr;
 576         u32 stat;
 577
 578         for (nr = 0; nr < 2; nr++) {
 579                 stat = adapter->read_hdlc_status(adapter, nr);
 580                 DBG(0x10, "HDLC %c stat %#x", 'A' + nr, stat);
 581                 if (stat & HDLC_INT_MASK)
 582                         hdlc_irq_one(&adapter->bcs[nr], stat);
 583         }
 584 }
 585
 586 static void modehdlc(struct fritz_bcs *bcs, int mode)
 587 {
 588         struct fritz_adapter *adapter = bcs->adapter;
 589
 590         DBG(0x40, "hdlc %c mode %d --> %d",
 591             'A' + bcs->channel, bcs->mode, mode);
 592
 593         if (bcs->mode == mode)
 594                 return;
 595
 596         bcs->fifo_size = 32;
 597         bcs->ctrl.ctrl = 0;
 598         bcs->ctrl.sr.cmd  = HDLC_CMD_XRS | HDLC_CMD_RRS;
 599         switch (mode) {
 600         case L1_MODE_NULL:
 601                 bcs->ctrl.sr.mode = HDLC_MODE_TRANS;
 602                 adapter->write_ctrl(bcs, 5);
 603                 break;
 604         case L1_MODE_TRANS:
 605         case L1_MODE_HDLC:
 606                 bcs->rcvidx = 0;
 607                 bcs->tx_cnt = 0;
 608                 bcs->tx_skb = NULL;
 609                 if (mode == L1_MODE_TRANS) {
 610                         bcs->ctrl.sr.mode = HDLC_MODE_TRANS;
 611                 } else {
 612                         bcs->ctrl.sr.mode = HDLC_MODE_ITF_FLG;
 613                 }
 614                 adapter->write_ctrl(bcs, 5);
 615                 bcs->ctrl.sr.cmd = HDLC_CMD_XRS;
 616                 adapter->write_ctrl(bcs, 1);
 617                 bcs->ctrl.sr.cmd = 0;
 618                 break;
 619         }
 620         bcs->mode = mode;
 621 }
 622
 623 static void fritz_b_l2l1(struct hisax_if *ifc, int pr, void *arg)
 624 {
 625         struct fritz_bcs *bcs = ifc->priv;
 626         struct sk_buff *skb = arg;
 627         int mode;
 628
 629         DBG(0x10, "pr %#x", pr);
 630
 631         switch (pr) {
 632         case PH_DATA | REQUEST:
 633                 BUG_ON(bcs->tx_skb);
 634                 bcs->tx_skb = skb;
 635                 DBG_SKB(1, skb);
 636                 hdlc_fill_fifo(bcs);
 637                 break;
 638         case PH_ACTIVATE | REQUEST:
 639                 mode = (long) arg;
 640                 DBG(4,"B%d,PH_ACTIVATE_REQUEST %d", bcs->channel + 1, mode);
 641                 modehdlc(bcs, mode);
 642                 B_L1L2(bcs, PH_ACTIVATE | INDICATION, NULL);
 643                 break;
 644         case PH_DEACTIVATE | REQUEST:
 645                 DBG(4,"B%d,PH_DEACTIVATE_REQUEST", bcs->channel + 1);
 646                 modehdlc(bcs, L1_MODE_NULL);
 647                 B_L1L2(bcs, PH_DEACTIVATE | INDICATION, NULL);
 648                 break;
 649         }
 650 }
 651
 652 // ----------------------------------------------------------------------
 653
 654 static irqreturn_t
 655 fcpci2_irq(int intno, void *dev)
 656 {
 657         struct fritz_adapter *adapter = dev;
 658         unsigned char val;
 659
 660         val = inb(adapter->io + AVM_STATUS0);
 661         if (!(val & AVM_STATUS0_IRQ_MASK))
 662                 /* hopefully a shared  IRQ reqest */
 663                 return IRQ_NONE;
 664         DBG(2, "STATUS0 %#x", val);
 665         if (val & AVM_STATUS0_IRQ_ISAC)
 666                 isacsx_irq(&adapter->isac);
 667         if (val & AVM_STATUS0_IRQ_HDLC)
 668                 hdlc_irq(adapter);
 669         if (val & AVM_STATUS0_IRQ_ISAC)
 670                 isacsx_irq(&adapter->isac);
 671         return IRQ_HANDLED;
 672 }
 673
 674 static irqreturn_t
 675 fcpci_irq(int intno, void *dev)
 676 {
 677         struct fritz_adapter *adapter = dev;
 678         unsigned char sval;
 679
 680         sval = inb(adapter->io + 2);
 681         if ((sval & AVM_STATUS0_IRQ_MASK) == AVM_STATUS0_IRQ_MASK)
 682                 /* possibly a shared  IRQ reqest */
 683                 return IRQ_NONE;
 684         DBG(2, "sval %#x", sval);
 685         if (!(sval & AVM_STATUS0_IRQ_ISAC))
 686                 isac_irq(&adapter->isac);
 687
 688         if (!(sval & AVM_STATUS0_IRQ_HDLC))
 689                 hdlc_irq(adapter);
 690         return IRQ_HANDLED;
 691 }
 692
 693 // ----------------------------------------------------------------------
 694
 695 static inline void fcpci2_init(struct fritz_adapter *adapter)
 696 {
 697         outb(AVM_STATUS0_RES_TIMER, adapter->io + AVM_STATUS0);
 698         outb(AVM_STATUS0_ENA_IRQ, adapter->io + AVM_STATUS0);
 699
 700 }
 701
 702 static inline void fcpci_init(struct fritz_adapter *adapter)
 703 {
 704         outb(AVM_STATUS0_DIS_TIMER | AVM_STATUS0_RES_TIMER |
 705              AVM_STATUS0_ENA_IRQ, adapter->io + AVM_STATUS0);
 706
 707         outb(AVM_STATUS1_ENA_IOM | adapter->irq,
 708              adapter->io + AVM_STATUS1);
 709         mdelay(10);
 710 }
 711
 712 // ----------------------------------------------------------------------
 713
 714 static int __devinit fcpcipnp_setup(struct fritz_adapter *adapter)
 715 {
 716         u32 val = 0;
 717         int retval;
 718
 719         DBG(1,"");
 720
 721         isac_init(&adapter->isac); // FIXME is this okay now
 722
 723         retval = -EBUSY;
 724         if (!request_region(adapter->io, 32, "fcpcipnp"))
 725                 goto err;
 726
 727         switch (adapter->type) {
 728         case AVM_FRITZ_PCIV2:
 729         case AVM_FRITZ_PCI:
 730                 val = inl(adapter->io);
 731                 break;
 732         case AVM_FRITZ_PNP:
 733                 val = inb(adapter->io);
 734                 val |= inb(adapter->io + 1) << 8;
 735                 break;
 736         }
 737
 738         DBG(1, "stat %#x Class %X Rev %d",
 739             val, val & 0xff, (val>>8) & 0xff);
 740
 741         spin_lock_init(&adapter->hw_lock);
 742         adapter->isac.priv = adapter;
 743         switch (adapter->type) {
 744         case AVM_FRITZ_PCIV2:
 745                 adapter->isac.read_isac       = &fcpci2_read_isac;
 746                 adapter->isac.write_isac      = &fcpci2_write_isac;
 747                 adapter->isac.read_isac_fifo  = &fcpci2_read_isac_fifo;
 748                 adapter->isac.write_isac_fifo = &fcpci2_write_isac_fifo;
 749
 750                 adapter->read_hdlc_status     = &fcpci2_read_hdlc_status;
 751                 adapter->write_ctrl           = &fcpci2_write_ctrl;
 752                 break;
 753         case AVM_FRITZ_PCI:
 754                 adapter->isac.read_isac       = &fcpci_read_isac;
 755                 adapter->isac.write_isac      = &fcpci_write_isac;
 756                 adapter->isac.read_isac_fifo  = &fcpci_read_isac_fifo;
 757                 adapter->isac.write_isac_fifo = &fcpci_write_isac_fifo;
 758
 759                 adapter->read_hdlc_status     = &fcpci_read_hdlc_status;
 760                 adapter->write_ctrl           = &fcpci_write_ctrl;
 761                 break;
 762         case AVM_FRITZ_PNP:
 763                 adapter->isac.read_isac       = &fcpci_read_isac;
 764                 adapter->isac.write_isac      = &fcpci_write_isac;
 765                 adapter->isac.read_isac_fifo  = &fcpci_read_isac_fifo;
 766                 adapter->isac.write_isac_fifo = &fcpci_write_isac_fifo;
 767
 768                 adapter->read_hdlc_status     = &fcpnp_read_hdlc_status;
 769                 adapter->write_ctrl           = &fcpnp_write_ctrl;
 770                 break;
 771         }
 772
 773         // Reset
 774         outb(0, adapter->io + AVM_STATUS0);
 775         mdelay(10);
 776         outb(AVM_STATUS0_RESET, adapter->io + AVM_STATUS0);
 777         mdelay(10);
 778         outb(0, adapter->io + AVM_STATUS0);
 779         mdelay(10);
 780
 781         switch (adapter->type) {
 782         case AVM_FRITZ_PCIV2:
 783                 retval = request_irq(adapter->irq, fcpci2_irq, IRQF_SHARED,
 784                                      "fcpcipnp", adapter);
 785                 break;
 786         case AVM_FRITZ_PCI:
 787                 retval = request_irq(adapter->irq, fcpci_irq, IRQF_SHARED,
 788                                      "fcpcipnp", adapter);
 789                 break;
 790         case AVM_FRITZ_PNP:
 791                 retval = request_irq(adapter->irq, fcpci_irq, 0,
 792                                      "fcpcipnp", adapter);
 793                 break;
 794         }
 795         if (retval)
 796                 goto err_region;
 797
 798         switch (adapter->type) {
 799         case AVM_FRITZ_PCIV2:
 800                 fcpci2_init(adapter);
 801                 isacsx_setup(&adapter->isac);
 802                 break;
 803         case AVM_FRITZ_PCI:
 804         case AVM_FRITZ_PNP:
 805                 fcpci_init(adapter);
 806                 isac_setup(&adapter->isac);
 807                 break;
 808         }
 809         val = adapter->read_hdlc_status(adapter, 0);
 810         DBG(0x20, "HDLC A STA %x", val);
 811         val = adapter->read_hdlc_status(adapter, 1);
 812         DBG(0x20, "HDLC B STA %x", val);
 813
 814         adapter->bcs[0].mode = -1;
 815         adapter->bcs[1].mode = -1;
 816         modehdlc(&adapter->bcs[0], L1_MODE_NULL);
 817         modehdlc(&adapter->bcs[1], L1_MODE_NULL);
 818
 819         return 0;
 820
 821  err_region:
 822         release_region(adapter->io, 32);
 823  err:
 824         return retval;
 825 }
 826
 827 static void __devexit fcpcipnp_release(struct fritz_adapter *adapter)
 828 {
 829         DBG(1,"");
 830
 831         outb(0, adapter->io + AVM_STATUS0);
 832         free_irq(adapter->irq, adapter);
 833         release_region(adapter->io, 32);
 834 }
 835
 836 // ----------------------------------------------------------------------
 837
 838 static struct fritz_adapter * __devinit
 839 new_adapter(void)
 840 {
 841         struct fritz_adapter *adapter;
 842         struct hisax_b_if *b_if[2];
 843         int i;
 844
 845         adapter = kzalloc(sizeof(struct fritz_adapter), GFP_KERNEL);
 846         if (!adapter)
 847                 return NULL;
 848
 849         adapter->isac.hisax_d_if.owner = THIS_MODULE;
 850         adapter->isac.hisax_d_if.ifc.priv = &adapter->isac;
 851         adapter->isac.hisax_d_if.ifc.l2l1 = isac_d_l2l1;
 852
 853         for (i = 0; i < 2; i++) {
 854                 adapter->bcs[i].adapter = adapter;
 855                 adapter->bcs[i].channel = i;
 856                 adapter->bcs[i].b_if.ifc.priv = &adapter->bcs[i];
 857                 adapter->bcs[i].b_if.ifc.l2l1 = fritz_b_l2l1;
 858         }
 859
 860         for (i = 0; i < 2; i++)
 861                 b_if[i] = &adapter->bcs[i].b_if;
 862
 863         if (hisax_register(&adapter->isac.hisax_d_if, b_if, "fcpcipnp",
 864                         protocol) != 0) {
 865                 kfree(adapter);
 866                 adapter = NULL;
 867         }
 868
 869         return adapter;
 870 }
 871
 872 static void delete_adapter(struct fritz_adapter *adapter)
 873 {
 874         hisax_unregister(&adapter->isac.hisax_d_if);
 875         kfree(adapter);
 876 }
 877
 878 static int __devinit fcpci_probe(struct pci_dev *pdev,
 879                                  const struct pci_device_id *ent)
 880 {
 881         struct fritz_adapter *adapter;
 882         int retval;
 883
 884         retval = -ENOMEM;
 885         adapter = new_adapter();
 886         if (!adapter)
 887                 goto err;
 888
 889         pci_set_drvdata(pdev, adapter);
 890
 891         if (pdev->device == PCI_DEVICE_ID_AVM_A1_V2)
 892                 adapter->type = AVM_FRITZ_PCIV2;
 893         else
 894                 adapter->type = AVM_FRITZ_PCI;
 895
 896         retval = pci_enable_device(pdev);
 897         if (retval)
 898                 goto err_free;
 899
 900         adapter->io = pci_resource_start(pdev, 1);
 901         adapter->irq = pdev->irq;
 902
 903         printk(KERN_INFO "hisax_fcpcipnp: found adapter %s at %s\n",
 904                (char *) ent->driver_data, pci_name(pdev));
 905
 906         retval = fcpcipnp_setup(adapter);
 907         if (retval)
 908                 goto err_free;
 909
 910         return 0;
 911
 912  err_free:
 913         delete_adapter(adapter);
 914  err:
 915         return retval;
 916 }
 917
 918 #ifdef CONFIG_PNP
 919 static int __devinit fcpnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
 920 {
 921         struct fritz_adapter *adapter;
 922         int retval;
 923
 924         if (!pdev)
 925                 return(-ENODEV);
 926
 927         retval = -ENOMEM;
 928         adapter = new_adapter();
 929         if (!adapter)
 930                 goto err;
 931
 932         pnp_set_drvdata(pdev, adapter);
 933
 934         adapter->type = AVM_FRITZ_PNP;
 935
 936         pnp_disable_dev(pdev);
 937         retval = pnp_activate_dev(pdev);
 938         if (retval < 0) {
 939                 printk(KERN_WARNING "%s: pnp_activate_dev(%s) ret(%d)\n", __func__,
 940                         (char *)dev_id->driver_data, retval);
 941                 goto err_free;
 942         }
 943         adapter->io = pnp_port_start(pdev, 0);
 944         adapter->irq = pnp_irq(pdev, 0);
 945
 946         printk(KERN_INFO "hisax_fcpcipnp: found adapter %s at IO %#x irq %d\n",
 947                (char *) dev_id->driver_data, adapter->io, adapter->irq);
 948
 949         retval = fcpcipnp_setup(adapter);
 950         if (retval)
 951                 goto err_free;
 952
 953         return 0;
 954
 955  err_free:
 956         delete_adapter(adapter);
 957  err:
 958         return retval;
 959 }
 960
 961 static void __devexit fcpnp_remove(struct pnp_dev *pdev)
 962 {
 963         struct fritz_adapter *adapter = pnp_get_drvdata(pdev);
 964
 965         if (adapter) {
 966                 fcpcipnp_release(adapter);
 967                 delete_adapter(adapter);
 968         }
 969         pnp_disable_dev(pdev);
 970 }
 971
 972 static struct pnp_driver fcpnp_driver = {
 973         .name           = "fcpnp",
 974         .probe          = fcpnp_probe,
 975         .remove         = __devexit_p(fcpnp_remove),
 976         .id_table       = fcpnp_ids,
 977 };
 978 #endif
 979
 980 static void __devexit fcpci_remove(struct pci_dev *pdev)
 981 {
 982         struct fritz_adapter *adapter = pci_get_drvdata(pdev);
 983
 984         fcpcipnp_release(adapter);
 985         pci_disable_device(pdev);
 986         delete_adapter(adapter);
 987 }
 988
 989 static struct pci_driver fcpci_driver = {
 990         .name           = "fcpci",
 991         .probe          = fcpci_probe,
 992         .remove         = __devexit_p(fcpci_remove),
 993         .id_table       = fcpci_ids,
 994 };
 995
 996 static int __init hisax_fcpcipnp_init(void)
 997 {
 998         int retval;
 999
1000         printk(KERN_INFO "hisax_fcpcipnp: Fritz!Card PCI/PCIv2/PnP ISDN driver v0.0.1\n");
1001
1002         retval = pci_register_driver(&fcpci_driver);
1003         if (retval)
1004                 return retval;
1005 #ifdef CONFIG_PNP
1006         retval = pnp_register_driver(&fcpnp_driver);
1007         if (retval < 0) {
1008                 pci_unregister_driver(&fcpci_driver);
1009                 return retval;
1010         }
1011 #endif
1012         return 0;
1013 }
1014
1015 static void __exit hisax_fcpcipnp_exit(void)
1016 {
1017 #ifdef CONFIG_PNP
1018         pnp_unregister_driver(&fcpnp_driver);
1019 #endif
1020         pci_unregister_driver(&fcpci_driver);
1021 }
1022
1023 module_init(hisax_fcpcipnp_init);
1024 module_exit(hisax_fcpcipnp_exit);