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