drivers/isdn/hardware/mISDN/w6692.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * w6692.c     mISDN driver for Winbond w6692 based cards
   4  *
   5  * Author      Karsten Keil <kkeil@suse.de>
   6  *             based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz>
   7  *
   8  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
   9  */
  10
  11 #include <linux/interrupt.h>
  12 #include <linux/module.h>
  13 #include <linux/pci.h>
  14 #include <linux/delay.h>
  15 #include <linux/mISDNhw.h>
  16 #include <linux/slab.h>
  17 #include "w6692.h"
  18
  19 #define W6692_REV       "2.0"
  20
  21 #define DBUSY_TIMER_VALUE       80
  22
  23 enum {
  24         W6692_ASUS,
  25         W6692_WINBOND,
  26         W6692_USR
  27 };
  28
  29 /* private data in the PCI devices list */
  30 struct w6692map {
  31         u_int   subtype;
  32         char    *name;
  33 };
  34
  35 static const struct w6692map  w6692_map[] =
  36 {
  37         {W6692_ASUS, "Dynalink/AsusCom IS64PH"},
  38         {W6692_WINBOND, "Winbond W6692"},
  39         {W6692_USR, "USR W6692"}
  40 };
  41
  42 #define PCI_DEVICE_ID_USR_6692  0x3409
  43
  44 struct w6692_ch {
  45         struct bchannel         bch;
  46         u32                     addr;
  47         struct timer_list       timer;
  48         u8                      b_mode;
  49 };
  50
  51 struct w6692_hw {
  52         struct list_head        list;
  53         struct pci_dev          *pdev;
  54         char                    name[MISDN_MAX_IDLEN];
  55         u32                     irq;
  56         u32                     irqcnt;
  57         u32                     addr;
  58         u32                     fmask;  /* feature mask - bit set per card nr */
  59         int                     subtype;
  60         spinlock_t              lock;   /* hw lock */
  61         u8                      imask;
  62         u8                      pctl;
  63         u8                      xaddr;
  64         u8                      xdata;
  65         u8                      state;
  66         struct w6692_ch         bc[2];
  67         struct dchannel         dch;
  68         char                    log[64];
  69 };
  70
  71 static LIST_HEAD(Cards);
  72 static DEFINE_RWLOCK(card_lock); /* protect Cards */
  73
  74 static int w6692_cnt;
  75 static int debug;
  76 static u32 led;
  77 static u32 pots;
  78
  79 static void
  80 _set_debug(struct w6692_hw *card)
  81 {
  82         card->dch.debug = debug;
  83         card->bc[0].bch.debug = debug;
  84         card->bc[1].bch.debug = debug;
  85 }
  86
  87 static int
  88 set_debug(const char *val, const struct kernel_param *kp)
  89 {
  90         int ret;
  91         struct w6692_hw *card;
  92
  93         ret = param_set_uint(val, kp);
  94         if (!ret) {
  95                 read_lock(&card_lock);
  96                 list_for_each_entry(card, &Cards, list)
  97                         _set_debug(card);
  98                 read_unlock(&card_lock);
  99         }
 100         return ret;
 101 }
 102
 103 MODULE_AUTHOR("Karsten Keil");
 104 MODULE_LICENSE("GPL v2");
 105 MODULE_VERSION(W6692_REV);
 106 module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR);
 107 MODULE_PARM_DESC(debug, "W6692 debug mask");
 108 module_param(led, uint, S_IRUGO | S_IWUSR);
 109 MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)");
 110 module_param(pots, uint, S_IRUGO | S_IWUSR);
 111 MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)");
 112
 113 static inline u8
 114 ReadW6692(struct w6692_hw *card, u8 offset)
 115 {
 116         return inb(card->addr + offset);
 117 }
 118
 119 static inline void
 120 WriteW6692(struct w6692_hw *card, u8 offset, u8 value)
 121 {
 122         outb(value, card->addr + offset);
 123 }
 124
 125 static inline u8
 126 ReadW6692B(struct w6692_ch *bc, u8 offset)
 127 {
 128         return inb(bc->addr + offset);
 129 }
 130
 131 static inline void
 132 WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value)
 133 {
 134         outb(value, bc->addr + offset);
 135 }
 136
 137 static void
 138 enable_hwirq(struct w6692_hw *card)
 139 {
 140         WriteW6692(card, W_IMASK, card->imask);
 141 }
 142
 143 static void
 144 disable_hwirq(struct w6692_hw *card)
 145 {
 146         WriteW6692(card, W_IMASK, 0xff);
 147 }
 148
 149 static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"};
 150
 151 static void
 152 W6692Version(struct w6692_hw *card)
 153 {
 154         int val;
 155
 156         val = ReadW6692(card, W_D_RBCH);
 157         pr_notice("%s: Winbond W6692 version: %s\n", card->name,
 158                   W6692Ver[(val >> 6) & 3]);
 159 }
 160
 161 static void
 162 w6692_led_handler(struct w6692_hw *card, int on)
 163 {
 164         if ((!(card->fmask & led)) || card->subtype == W6692_USR)
 165                 return;
 166         if (on) {
 167                 card->xdata &= 0xfb;    /*  LED ON */
 168                 WriteW6692(card, W_XDATA, card->xdata);
 169         } else {
 170                 card->xdata |= 0x04;    /*  LED OFF */
 171                 WriteW6692(card, W_XDATA, card->xdata);
 172         }
 173 }
 174
 175 static void
 176 ph_command(struct w6692_hw *card, u8 cmd)
 177 {
 178         pr_debug("%s: ph_command %x\n", card->name, cmd);
 179         WriteW6692(card, W_CIX, cmd);
 180 }
 181
 182 static void
 183 W6692_new_ph(struct w6692_hw *card)
 184 {
 185         if (card->state == W_L1CMD_RST)
 186                 ph_command(card, W_L1CMD_DRC);
 187         schedule_event(&card->dch, FLG_PHCHANGE);
 188 }
 189
 190 static void
 191 W6692_ph_bh(struct dchannel *dch)
 192 {
 193         struct w6692_hw *card = dch->hw;
 194
 195         switch (card->state) {
 196         case W_L1CMD_RST:
 197                 dch->state = 0;
 198                 l1_event(dch->l1, HW_RESET_IND);
 199                 break;
 200         case W_L1IND_CD:
 201                 dch->state = 3;
 202                 l1_event(dch->l1, HW_DEACT_CNF);
 203                 break;
 204         case W_L1IND_DRD:
 205                 dch->state = 3;
 206                 l1_event(dch->l1, HW_DEACT_IND);
 207                 break;
 208         case W_L1IND_CE:
 209                 dch->state = 4;
 210                 l1_event(dch->l1, HW_POWERUP_IND);
 211                 break;
 212         case W_L1IND_LD:
 213                 if (dch->state <= 5) {
 214                         dch->state = 5;
 215                         l1_event(dch->l1, ANYSIGNAL);
 216                 } else {
 217                         dch->state = 8;
 218                         l1_event(dch->l1, LOSTFRAMING);
 219                 }
 220                 break;
 221         case W_L1IND_ARD:
 222                 dch->state = 6;
 223                 l1_event(dch->l1, INFO2);
 224                 break;
 225         case W_L1IND_AI8:
 226                 dch->state = 7;
 227                 l1_event(dch->l1, INFO4_P8);
 228                 break;
 229         case W_L1IND_AI10:
 230                 dch->state = 7;
 231                 l1_event(dch->l1, INFO4_P10);
 232                 break;
 233         default:
 234                 pr_debug("%s: TE unknown state %02x dch state %02x\n",
 235                          card->name, card->state, dch->state);
 236                 break;
 237         }
 238         pr_debug("%s: TE newstate %02x\n", card->name, dch->state);
 239 }
 240
 241 static void
 242 W6692_empty_Dfifo(struct w6692_hw *card, int count)
 243 {
 244         struct dchannel *dch = &card->dch;
 245         u8 *ptr;
 246
 247         pr_debug("%s: empty_Dfifo %d\n", card->name, count);
 248         if (!dch->rx_skb) {
 249                 dch->rx_skb = mI_alloc_skb(card->dch.maxlen, GFP_ATOMIC);
 250                 if (!dch->rx_skb) {
 251                         pr_info("%s: D receive out of memory\n", card->name);
 252                         WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
 253                         return;
 254                 }
 255         }
 256         if ((dch->rx_skb->len + count) >= dch->maxlen) {
 257                 pr_debug("%s: empty_Dfifo overrun %d\n", card->name,
 258                          dch->rx_skb->len + count);
 259                 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
 260                 return;
 261         }
 262         ptr = skb_put(dch->rx_skb, count);
 263         insb(card->addr + W_D_RFIFO, ptr, count);
 264         WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK);
 265         if (debug & DEBUG_HW_DFIFO) {
 266                 snprintf(card->log, 63, "D-recv %s %d ",
 267                          card->name, count);
 268                 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
 269         }
 270 }
 271
 272 static void
 273 W6692_fill_Dfifo(struct w6692_hw *card)
 274 {
 275         struct dchannel *dch = &card->dch;
 276         int count;
 277         u8 *ptr;
 278         u8 cmd = W_D_CMDR_XMS;
 279
 280         pr_debug("%s: fill_Dfifo\n", card->name);
 281         if (!dch->tx_skb)
 282                 return;
 283         count = dch->tx_skb->len - dch->tx_idx;
 284         if (count <= 0)
 285                 return;
 286         if (count > W_D_FIFO_THRESH)
 287                 count = W_D_FIFO_THRESH;
 288         else
 289                 cmd |= W_D_CMDR_XME;
 290         ptr = dch->tx_skb->data + dch->tx_idx;
 291         dch->tx_idx += count;
 292         outsb(card->addr + W_D_XFIFO, ptr, count);
 293         WriteW6692(card, W_D_CMDR, cmd);
 294         if (test_and_set_bit(FLG_BUSY_TIMER, &dch->Flags)) {
 295                 pr_debug("%s: fill_Dfifo dbusytimer running\n", card->name);
 296                 del_timer(&dch->timer);
 297         }
 298         dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000);
 299         add_timer(&dch->timer);
 300         if (debug & DEBUG_HW_DFIFO) {
 301                 snprintf(card->log, 63, "D-send %s %d ",
 302                          card->name, count);
 303                 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
 304         }
 305 }
 306
 307 static void
 308 d_retransmit(struct w6692_hw *card)
 309 {
 310         struct dchannel *dch = &card->dch;
 311
 312         if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
 313                 del_timer(&dch->timer);
 314 #ifdef FIXME
 315         if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
 316                 dchannel_sched_event(dch, D_CLEARBUSY);
 317 #endif
 318         if (test_bit(FLG_TX_BUSY, &dch->Flags)) {
 319                 /* Restart frame */
 320                 dch->tx_idx = 0;
 321                 W6692_fill_Dfifo(card);
 322         } else if (dch->tx_skb) { /* should not happen */
 323                 pr_info("%s: %s without TX_BUSY\n", card->name, __func__);
 324                 test_and_set_bit(FLG_TX_BUSY, &dch->Flags);
 325                 dch->tx_idx = 0;
 326                 W6692_fill_Dfifo(card);
 327         } else {
 328                 pr_info("%s: XDU no TX_BUSY\n", card->name);
 329                 if (get_next_dframe(dch))
 330                         W6692_fill_Dfifo(card);
 331         }
 332 }
 333
 334 static void
 335 handle_rxD(struct w6692_hw *card) {
 336         u8      stat;
 337         int     count;
 338
 339         stat = ReadW6692(card, W_D_RSTA);
 340         if (stat & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) {
 341                 if (stat & W_D_RSTA_RDOV) {
 342                         pr_debug("%s: D-channel RDOV\n", card->name);
 343 #ifdef ERROR_STATISTIC
 344                         card->dch.err_rx++;
 345 #endif
 346                 }
 347                 if (stat & W_D_RSTA_CRCE) {
 348                         pr_debug("%s: D-channel CRC error\n", card->name);
 349 #ifdef ERROR_STATISTIC
 350                         card->dch.err_crc++;
 351 #endif
 352                 }
 353                 if (stat & W_D_RSTA_RMB) {
 354                         pr_debug("%s: D-channel ABORT\n", card->name);
 355 #ifdef ERROR_STATISTIC
 356                         card->dch.err_rx++;
 357 #endif
 358                 }
 359                 dev_kfree_skb(card->dch.rx_skb);
 360                 card->dch.rx_skb = NULL;
 361                 WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
 362         } else {
 363                 count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
 364                 if (count == 0)
 365                         count = W_D_FIFO_THRESH;
 366                 W6692_empty_Dfifo(card, count);
 367                 recv_Dchannel(&card->dch);
 368         }
 369 }
 370
 371 static void
 372 handle_txD(struct w6692_hw *card) {
 373         if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags))
 374                 del_timer(&card->dch.timer);
 375         if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) {
 376                 W6692_fill_Dfifo(card);
 377         } else {
 378                 dev_kfree_skb(card->dch.tx_skb);
 379                 if (get_next_dframe(&card->dch))
 380                         W6692_fill_Dfifo(card);
 381         }
 382 }
 383
 384 static void
 385 handle_statusD(struct w6692_hw *card)
 386 {
 387         struct dchannel *dch = &card->dch;
 388         u8 exval, v1, cir;
 389
 390         exval = ReadW6692(card, W_D_EXIR);
 391
 392         pr_debug("%s: D_EXIR %02x\n", card->name, exval);
 393         if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) {
 394                 /* Transmit underrun/collision */
 395                 pr_debug("%s: D-channel underrun/collision\n", card->name);
 396 #ifdef ERROR_STATISTIC
 397                 dch->err_tx++;
 398 #endif
 399                 d_retransmit(card);
 400         }
 401         if (exval & W_D_EXI_RDOV) {     /* RDOV */
 402                 pr_debug("%s: D-channel RDOV\n", card->name);
 403                 WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST);
 404         }
 405         if (exval & W_D_EXI_TIN2)       /* TIN2 - never */
 406                 pr_debug("%s: spurious TIN2 interrupt\n", card->name);
 407         if (exval & W_D_EXI_MOC) {      /* MOC - not supported */
 408                 v1 = ReadW6692(card, W_MOSR);
 409                 pr_debug("%s: spurious MOC interrupt MOSR %02x\n",
 410                          card->name, v1);
 411         }
 412         if (exval & W_D_EXI_ISC) {      /* ISC - Level1 change */
 413                 cir = ReadW6692(card, W_CIR);
 414                 pr_debug("%s: ISC CIR %02X\n", card->name, cir);
 415                 if (cir & W_CIR_ICC) {
 416                         v1 = cir & W_CIR_COD_MASK;
 417                         pr_debug("%s: ph_state_change %x -> %x\n", card->name,
 418                                  dch->state, v1);
 419                         card->state = v1;
 420                         if (card->fmask & led) {
 421                                 switch (v1) {
 422                                 case W_L1IND_AI8:
 423                                 case W_L1IND_AI10:
 424                                         w6692_led_handler(card, 1);
 425                                         break;
 426                                 default:
 427                                         w6692_led_handler(card, 0);
 428                                         break;
 429                                 }
 430                         }
 431                         W6692_new_ph(card);
 432                 }
 433                 if (cir & W_CIR_SCC) {
 434                         v1 = ReadW6692(card, W_SQR);
 435                         pr_debug("%s: SCC SQR %02X\n", card->name, v1);
 436                 }
 437         }
 438         if (exval & W_D_EXI_WEXP)
 439                 pr_debug("%s: spurious WEXP interrupt!\n", card->name);
 440         if (exval & W_D_EXI_TEXP)
 441                 pr_debug("%s: spurious TEXP interrupt!\n", card->name);
 442 }
 443
 444 static void
 445 W6692_empty_Bfifo(struct w6692_ch *wch, int count)
 446 {
 447         struct w6692_hw *card = wch->bch.hw;
 448         u8 *ptr;
 449         int maxlen;
 450
 451         pr_debug("%s: empty_Bfifo %d\n", card->name, count);
 452         if (unlikely(wch->bch.state == ISDN_P_NONE)) {
 453                 pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name);
 454                 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
 455                 if (wch->bch.rx_skb)
 456                         skb_trim(wch->bch.rx_skb, 0);
 457                 return;
 458         }
 459         if (test_bit(FLG_RX_OFF, &wch->bch.Flags)) {
 460                 wch->bch.dropcnt += count;
 461                 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
 462                 return;
 463         }
 464         maxlen = bchannel_get_rxbuf(&wch->bch, count);
 465         if (maxlen < 0) {
 466                 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
 467                 if (wch->bch.rx_skb)
 468                         skb_trim(wch->bch.rx_skb, 0);
 469                 pr_warn("%s.B%d: No bufferspace for %d bytes\n",
 470                         card->name, wch->bch.nr, count);
 471                 return;
 472         }
 473         ptr = skb_put(wch->bch.rx_skb, count);
 474         insb(wch->addr + W_B_RFIFO, ptr, count);
 475         WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
 476         if (debug & DEBUG_HW_DFIFO) {
 477                 snprintf(card->log, 63, "B%1d-recv %s %d ",
 478                          wch->bch.nr, card->name, count);
 479                 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
 480         }
 481 }
 482
 483 static void
 484 W6692_fill_Bfifo(struct w6692_ch *wch)
 485 {
 486         struct w6692_hw *card = wch->bch.hw;
 487         int count, fillempty = 0;
 488         u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS;
 489
 490         pr_debug("%s: fill Bfifo\n", card->name);
 491         if (!wch->bch.tx_skb) {
 492                 if (!test_bit(FLG_TX_EMPTY, &wch->bch.Flags))
 493                         return;
 494                 ptr = wch->bch.fill;
 495                 count = W_B_FIFO_THRESH;
 496                 fillempty = 1;
 497         } else {
 498                 count = wch->bch.tx_skb->len - wch->bch.tx_idx;
 499                 if (count <= 0)
 500                         return;
 501                 ptr = wch->bch.tx_skb->data + wch->bch.tx_idx;
 502         }
 503         if (count > W_B_FIFO_THRESH)
 504                 count = W_B_FIFO_THRESH;
 505         else if (test_bit(FLG_HDLC, &wch->bch.Flags))
 506                 cmd |= W_B_CMDR_XME;
 507
 508         pr_debug("%s: fill Bfifo%d/%d\n", card->name,
 509                  count, wch->bch.tx_idx);
 510         wch->bch.tx_idx += count;
 511         if (fillempty) {
 512                 while (count > 0) {
 513                         outsb(wch->addr + W_B_XFIFO, ptr, MISDN_BCH_FILL_SIZE);
 514                         count -= MISDN_BCH_FILL_SIZE;
 515                 }
 516         } else {
 517                 outsb(wch->addr + W_B_XFIFO, ptr, count);
 518         }
 519         WriteW6692B(wch, W_B_CMDR, cmd);
 520         if ((debug & DEBUG_HW_BFIFO) && !fillempty) {
 521                 snprintf(card->log, 63, "B%1d-send %s %d ",
 522                          wch->bch.nr, card->name, count);
 523                 print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count);
 524         }
 525 }
 526
 527 #if 0
 528 static int
 529 setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb)
 530 {
 531         struct w6692_hw *card = wch->bch.hw;
 532         u16 *vol = (u16 *)skb->data;
 533         u8 val;
 534
 535         if ((!(card->fmask & pots)) ||
 536             !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
 537                 return -ENODEV;
 538         if (skb->len < 2)
 539                 return -EINVAL;
 540         if (*vol > 7)
 541                 return -EINVAL;
 542         val = *vol & 7;
 543         val = 7 - val;
 544         if (mic) {
 545                 val <<= 3;
 546                 card->xaddr &= 0xc7;
 547         } else {
 548                 card->xaddr &= 0xf8;
 549         }
 550         card->xaddr |= val;
 551         WriteW6692(card, W_XADDR, card->xaddr);
 552         return 0;
 553 }
 554
 555 static int
 556 enable_pots(struct w6692_ch *wch)
 557 {
 558         struct w6692_hw *card = wch->bch.hw;
 559
 560         if ((!(card->fmask & pots)) ||
 561             !test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
 562                 return -ENODEV;
 563         wch->b_mode |= W_B_MODE_EPCM | W_B_MODE_BSW0;
 564         WriteW6692B(wch, W_B_MODE, wch->b_mode);
 565         WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
 566         card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0);
 567         WriteW6692(card, W_PCTL, card->pctl);
 568         return 0;
 569 }
 570 #endif
 571
 572 static int
 573 disable_pots(struct w6692_ch *wch)
 574 {
 575         struct w6692_hw *card = wch->bch.hw;
 576
 577         if (!(card->fmask & pots))
 578                 return -ENODEV;
 579         wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0);
 580         WriteW6692B(wch, W_B_MODE, wch->b_mode);
 581         WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
 582                     W_B_CMDR_XRST);
 583         return 0;
 584 }
 585
 586 static int
 587 w6692_mode(struct w6692_ch *wch, u32 pr)
 588 {
 589         struct w6692_hw *card;
 590
 591         card = wch->bch.hw;
 592         pr_debug("%s: B%d protocol %x-->%x\n", card->name,
 593                  wch->bch.nr, wch->bch.state, pr);
 594         switch (pr) {
 595         case ISDN_P_NONE:
 596                 if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM))
 597                         disable_pots(wch);
 598                 wch->b_mode = 0;
 599                 mISDN_clear_bchannel(&wch->bch);
 600                 WriteW6692B(wch, W_B_MODE, wch->b_mode);
 601                 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
 602                 test_and_clear_bit(FLG_HDLC, &wch->bch.Flags);
 603                 test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags);
 604                 break;
 605         case ISDN_P_B_RAW:
 606                 wch->b_mode = W_B_MODE_MMS;
 607                 WriteW6692B(wch, W_B_MODE, wch->b_mode);
 608                 WriteW6692B(wch, W_B_EXIM, 0);
 609                 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
 610                             W_B_CMDR_XRST);
 611                 test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags);
 612                 break;
 613         case ISDN_P_B_HDLC:
 614                 wch->b_mode = W_B_MODE_ITF;
 615                 WriteW6692B(wch, W_B_MODE, wch->b_mode);
 616                 WriteW6692B(wch, W_B_ADM1, 0xff);
 617                 WriteW6692B(wch, W_B_ADM2, 0xff);
 618                 WriteW6692B(wch, W_B_EXIM, 0);
 619                 WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT |
 620                             W_B_CMDR_XRST);
 621                 test_and_set_bit(FLG_HDLC, &wch->bch.Flags);
 622                 break;
 623         default:
 624                 pr_info("%s: protocol %x not known\n", card->name, pr);
 625                 return -ENOPROTOOPT;
 626         }
 627         wch->bch.state = pr;
 628         return 0;
 629 }
 630
 631 static void
 632 send_next(struct w6692_ch *wch)
 633 {
 634         if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) {
 635                 W6692_fill_Bfifo(wch);
 636         } else {
 637                 dev_kfree_skb(wch->bch.tx_skb);
 638                 if (get_next_bframe(&wch->bch)) {
 639                         W6692_fill_Bfifo(wch);
 640                         test_and_clear_bit(FLG_TX_EMPTY, &wch->bch.Flags);
 641                 } else if (test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) {
 642                         W6692_fill_Bfifo(wch);
 643                 }
 644         }
 645 }
 646
 647 static void
 648 W6692B_interrupt(struct w6692_hw *card, int ch)
 649 {
 650         struct w6692_ch *wch = &card->bc[ch];
 651         int             count;
 652         u8              stat, star = 0;
 653
 654         stat = ReadW6692B(wch, W_B_EXIR);
 655         pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat);
 656         if (stat & W_B_EXI_RME) {
 657                 star = ReadW6692B(wch, W_B_STAR);
 658                 if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) {
 659                         if ((star & W_B_STAR_RDOV) &&
 660                             test_bit(FLG_ACTIVE, &wch->bch.Flags)) {
 661                                 pr_debug("%s: B%d RDOV proto=%x\n", card->name,
 662                                          wch->bch.nr, wch->bch.state);
 663 #ifdef ERROR_STATISTIC
 664                                 wch->bch.err_rdo++;
 665 #endif
 666                         }
 667                         if (test_bit(FLG_HDLC, &wch->bch.Flags)) {
 668                                 if (star & W_B_STAR_CRCE) {
 669                                         pr_debug("%s: B%d CRC error\n",
 670                                                  card->name, wch->bch.nr);
 671 #ifdef ERROR_STATISTIC
 672                                         wch->bch.err_crc++;
 673 #endif
 674                                 }
 675                                 if (star & W_B_STAR_RMB) {
 676                                         pr_debug("%s: B%d message abort\n",
 677                                                  card->name, wch->bch.nr);
 678 #ifdef ERROR_STATISTIC
 679                                         wch->bch.err_inv++;
 680 #endif
 681                                 }
 682                         }
 683                         WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
 684                                     W_B_CMDR_RRST | W_B_CMDR_RACT);
 685                         if (wch->bch.rx_skb)
 686                                 skb_trim(wch->bch.rx_skb, 0);
 687                 } else {
 688                         count = ReadW6692B(wch, W_B_RBCL) &
 689                                 (W_B_FIFO_THRESH - 1);
 690                         if (count == 0)
 691                                 count = W_B_FIFO_THRESH;
 692                         W6692_empty_Bfifo(wch, count);
 693                         recv_Bchannel(&wch->bch, 0, false);
 694                 }
 695         }
 696         if (stat & W_B_EXI_RMR) {
 697                 if (!(stat & W_B_EXI_RME))
 698                         star = ReadW6692B(wch, W_B_STAR);
 699                 if (star & W_B_STAR_RDOV) {
 700                         pr_debug("%s: B%d RDOV proto=%x\n", card->name,
 701                                  wch->bch.nr, wch->bch.state);
 702 #ifdef ERROR_STATISTIC
 703                         wch->bch.err_rdo++;
 704 #endif
 705                         WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
 706                                     W_B_CMDR_RRST | W_B_CMDR_RACT);
 707                 } else {
 708                         W6692_empty_Bfifo(wch, W_B_FIFO_THRESH);
 709                         if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
 710                                 recv_Bchannel(&wch->bch, 0, false);
 711                 }
 712         }
 713         if (stat & W_B_EXI_RDOV) {
 714                 /* only if it is not handled yet */
 715                 if (!(star & W_B_STAR_RDOV)) {
 716                         pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name,
 717                                  wch->bch.nr, wch->bch.state);
 718 #ifdef ERROR_STATISTIC
 719                         wch->bch.err_rdo++;
 720 #endif
 721                         WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK |
 722                                     W_B_CMDR_RRST | W_B_CMDR_RACT);
 723                 }
 724         }
 725         if (stat & W_B_EXI_XFR) {
 726                 if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) {
 727                         star = ReadW6692B(wch, W_B_STAR);
 728                         pr_debug("%s: B%d star %02x\n", card->name,
 729                                  wch->bch.nr, star);
 730                 }
 731                 if (star & W_B_STAR_XDOW) {
 732                         pr_warn("%s: B%d XDOW proto=%x\n", card->name,
 733                                 wch->bch.nr, wch->bch.state);
 734 #ifdef ERROR_STATISTIC
 735                         wch->bch.err_xdu++;
 736 #endif
 737                         WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST |
 738                                     W_B_CMDR_RACT);
 739                         /* resend */
 740                         if (wch->bch.tx_skb) {
 741                                 if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
 742                                         wch->bch.tx_idx = 0;
 743                         }
 744                 }
 745                 send_next(wch);
 746                 if (star & W_B_STAR_XDOW)
 747                         return; /* handle XDOW only once */
 748         }
 749         if (stat & W_B_EXI_XDUN) {
 750                 pr_warn("%s: B%d XDUN proto=%x\n", card->name,
 751                         wch->bch.nr, wch->bch.state);
 752 #ifdef ERROR_STATISTIC
 753                 wch->bch.err_xdu++;
 754 #endif
 755                 /* resend - no XRST needed */
 756                 if (wch->bch.tx_skb) {
 757                         if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags))
 758                                 wch->bch.tx_idx = 0;
 759                 } else if (test_bit(FLG_FILLEMPTY, &wch->bch.Flags)) {
 760                         test_and_set_bit(FLG_TX_EMPTY, &wch->bch.Flags);
 761                 }
 762                 send_next(wch);
 763         }
 764 }
 765
 766 static irqreturn_t
 767 w6692_irq(int intno, void *dev_id)
 768 {
 769         struct w6692_hw *card = dev_id;
 770         u8              ista;
 771
 772         spin_lock(&card->lock);
 773         ista = ReadW6692(card, W_ISTA);
 774         if ((ista | card->imask) == card->imask) {
 775                 /* possible a shared  IRQ reqest */
 776                 spin_unlock(&card->lock);
 777                 return IRQ_NONE;
 778         }
 779         card->irqcnt++;
 780         pr_debug("%s: ista %02x\n", card->name, ista);
 781         ista &= ~card->imask;
 782         if (ista & W_INT_B1_EXI)
 783                 W6692B_interrupt(card, 0);
 784         if (ista & W_INT_B2_EXI)
 785                 W6692B_interrupt(card, 1);
 786         if (ista & W_INT_D_RME)
 787                 handle_rxD(card);
 788         if (ista & W_INT_D_RMR)
 789                 W6692_empty_Dfifo(card, W_D_FIFO_THRESH);
 790         if (ista & W_INT_D_XFR)
 791                 handle_txD(card);
 792         if (ista & W_INT_D_EXI)
 793                 handle_statusD(card);
 794         if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */
 795                 pr_debug("%s: W6692 spurious XINT!\n", card->name);
 796 /* End IRQ Handler */
 797         spin_unlock(&card->lock);
 798         return IRQ_HANDLED;
 799 }
 800
 801 static void
 802 dbusy_timer_handler(struct timer_list *t)
 803 {
 804         struct dchannel *dch = from_timer(dch, t, timer);
 805         struct w6692_hw *card = dch->hw;
 806         int             rbch, star;
 807         u_long          flags;
 808
 809         if (test_bit(FLG_BUSY_TIMER, &dch->Flags)) {
 810                 spin_lock_irqsave(&card->lock, flags);
 811                 rbch = ReadW6692(card, W_D_RBCH);
 812                 star = ReadW6692(card, W_D_STAR);
 813                 pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n",
 814                          card->name, rbch, star);
 815                 if (star & W_D_STAR_XBZ)        /* D-Channel Busy */
 816                         test_and_set_bit(FLG_L1_BUSY, &dch->Flags);
 817                 else {
 818                         /* discard frame; reset transceiver */
 819                         test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags);
 820                         if (dch->tx_idx)
 821                                 dch->tx_idx = 0;
 822                         else
 823                                 pr_info("%s: W6692 D-Channel Busy no tx_idx\n",
 824                                         card->name);
 825                         /* Transmitter reset */
 826                         WriteW6692(card, W_D_CMDR, W_D_CMDR_XRST);
 827                 }
 828                 spin_unlock_irqrestore(&card->lock, flags);
 829         }
 830 }
 831
 832 static void initW6692(struct w6692_hw *card)
 833 {
 834         u8      val;
 835
 836         timer_setup(&card->dch.timer, dbusy_timer_handler, 0);
 837         w6692_mode(&card->bc[0], ISDN_P_NONE);
 838         w6692_mode(&card->bc[1], ISDN_P_NONE);
 839         WriteW6692(card, W_D_CTL, 0x00);
 840         disable_hwirq(card);
 841         WriteW6692(card, W_D_SAM, 0xff);
 842         WriteW6692(card, W_D_TAM, 0xff);
 843         WriteW6692(card, W_D_MODE, W_D_MODE_RACT);
 844         card->state = W_L1CMD_RST;
 845         ph_command(card, W_L1CMD_RST);
 846         ph_command(card, W_L1CMD_ECK);
 847         /* enable all IRQ but extern */
 848         card->imask = 0x18;
 849         WriteW6692(card, W_D_EXIM, 0x00);
 850         WriteW6692B(&card->bc[0], W_B_EXIM, 0);
 851         WriteW6692B(&card->bc[1], W_B_EXIM, 0);
 852         /* Reset D-chan receiver and transmitter */
 853         WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
 854         /* Reset B-chan receiver and transmitter */
 855         WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
 856         WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST);
 857         /* enable peripheral */
 858         if (card->subtype == W6692_USR) {
 859                 /* seems that USR implemented some power control features
 860                  * Pin 79 is connected to the oscilator circuit so we
 861                  * have to handle it here
 862                  */
 863                 card->pctl = 0x80;
 864                 card->xdata = 0;
 865                 WriteW6692(card, W_PCTL, card->pctl);
 866                 WriteW6692(card, W_XDATA, card->xdata);
 867         } else {
 868                 card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 |
 869                         W_PCTL_OE1 | W_PCTL_OE0;
 870                 card->xaddr = 0x00;/* all sw off */
 871                 if (card->fmask & pots)
 872                         card->xdata |= 0x06;    /*  POWER UP/ LED OFF / ALAW */
 873                 if (card->fmask & led)
 874                         card->xdata |= 0x04;    /* LED OFF */
 875                 if ((card->fmask & pots) || (card->fmask & led)) {
 876                         WriteW6692(card, W_PCTL, card->pctl);
 877                         WriteW6692(card, W_XADDR, card->xaddr);
 878                         WriteW6692(card, W_XDATA, card->xdata);
 879                         val = ReadW6692(card, W_XADDR);
 880                         if (debug & DEBUG_HW)
 881                                 pr_notice("%s: W_XADDR=%02x\n",
 882                                           card->name, val);
 883                 }
 884         }
 885 }
 886
 887 static void
 888 reset_w6692(struct w6692_hw *card)
 889 {
 890         WriteW6692(card, W_D_CTL, W_D_CTL_SRST);
 891         mdelay(10);
 892         WriteW6692(card, W_D_CTL, 0);
 893 }
 894
 895 static int
 896 init_card(struct w6692_hw *card)
 897 {
 898         int     cnt = 3;
 899         u_long  flags;
 900
 901         spin_lock_irqsave(&card->lock, flags);
 902         disable_hwirq(card);
 903         spin_unlock_irqrestore(&card->lock, flags);
 904         if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) {
 905                 pr_info("%s: couldn't get interrupt %d\n", card->name,
 906                         card->irq);
 907                 return -EIO;
 908         }
 909         while (cnt--) {
 910                 spin_lock_irqsave(&card->lock, flags);
 911                 initW6692(card);
 912                 enable_hwirq(card);
 913                 spin_unlock_irqrestore(&card->lock, flags);
 914                 /* Timeout 10ms */
 915                 msleep_interruptible(10);
 916                 if (debug & DEBUG_HW)
 917                         pr_notice("%s: IRQ %d count %d\n", card->name,
 918                                   card->irq, card->irqcnt);
 919                 if (!card->irqcnt) {
 920                         pr_info("%s: IRQ(%d) getting no IRQs during init %d\n",
 921                                 card->name, card->irq, 3 - cnt);
 922                         reset_w6692(card);
 923                 } else
 924                         return 0;
 925         }
 926         free_irq(card->irq, card);
 927         return -EIO;
 928 }
 929
 930 static int
 931 w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
 932 {
 933         struct bchannel *bch = container_of(ch, struct bchannel, ch);
 934         struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
 935         struct w6692_hw *card = bch->hw;
 936         int ret = -EINVAL;
 937         struct mISDNhead *hh = mISDN_HEAD_P(skb);
 938         unsigned long flags;
 939
 940         switch (hh->prim) {
 941         case PH_DATA_REQ:
 942                 spin_lock_irqsave(&card->lock, flags);
 943                 ret = bchannel_senddata(bch, skb);
 944                 if (ret > 0) { /* direct TX */
 945                         ret = 0;
 946                         W6692_fill_Bfifo(bc);
 947                 }
 948                 spin_unlock_irqrestore(&card->lock, flags);
 949                 return ret;
 950         case PH_ACTIVATE_REQ:
 951                 spin_lock_irqsave(&card->lock, flags);
 952                 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
 953                         ret = w6692_mode(bc, ch->protocol);
 954                 else
 955                         ret = 0;
 956                 spin_unlock_irqrestore(&card->lock, flags);
 957                 if (!ret)
 958                         _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
 959                                     NULL, GFP_KERNEL);
 960                 break;
 961         case PH_DEACTIVATE_REQ:
 962                 spin_lock_irqsave(&card->lock, flags);
 963                 mISDN_clear_bchannel(bch);
 964                 w6692_mode(bc, ISDN_P_NONE);
 965                 spin_unlock_irqrestore(&card->lock, flags);
 966                 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
 967                             NULL, GFP_KERNEL);
 968                 ret = 0;
 969                 break;
 970         default:
 971                 pr_info("%s: %s unknown prim(%x,%x)\n",
 972                         card->name, __func__, hh->prim, hh->id);
 973                 ret = -EINVAL;
 974         }
 975         if (!ret)
 976                 dev_kfree_skb(skb);
 977         return ret;
 978 }
 979
 980 static int
 981 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
 982 {
 983         return mISDN_ctrl_bchannel(bch, cq);
 984 }
 985
 986 static int
 987 open_bchannel(struct w6692_hw *card, struct channel_req *rq)
 988 {
 989         struct bchannel *bch;
 990
 991         if (rq->adr.channel == 0 || rq->adr.channel > 2)
 992                 return -EINVAL;
 993         if (rq->protocol == ISDN_P_NONE)
 994                 return -EINVAL;
 995         bch = &card->bc[rq->adr.channel - 1].bch;
 996         if (test_and_set_bit(FLG_OPEN, &bch->Flags))
 997                 return -EBUSY; /* b-channel can be only open once */
 998         bch->ch.protocol = rq->protocol;
 999         rq->ch = &bch->ch;
1000         return 0;
1001 }
1002
1003 static int
1004 channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq)
1005 {
1006         int     ret = 0;
1007
1008         switch (cq->op) {
1009         case MISDN_CTRL_GETOP:
1010                 cq->op = MISDN_CTRL_L1_TIMER3;
1011                 break;
1012         case MISDN_CTRL_L1_TIMER3:
1013                 ret = l1_event(card->dch.l1, HW_TIMER3_VALUE | (cq->p1 & 0xff));
1014                 break;
1015         default:
1016                 pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op);
1017                 ret = -EINVAL;
1018                 break;
1019         }
1020         return ret;
1021 }
1022
1023 static int
1024 w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1025 {
1026         struct bchannel *bch = container_of(ch, struct bchannel, ch);
1027         struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch);
1028         struct w6692_hw *card = bch->hw;
1029         int ret = -EINVAL;
1030         u_long flags;
1031
1032         pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg);
1033         switch (cmd) {
1034         case CLOSE_CHANNEL:
1035                 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1036                 cancel_work_sync(&bch->workq);
1037                 spin_lock_irqsave(&card->lock, flags);
1038                 mISDN_clear_bchannel(bch);
1039                 w6692_mode(bc, ISDN_P_NONE);
1040                 spin_unlock_irqrestore(&card->lock, flags);
1041                 ch->protocol = ISDN_P_NONE;
1042                 ch->peer = NULL;
1043                 module_put(THIS_MODULE);
1044                 ret = 0;
1045                 break;
1046         case CONTROL_CHANNEL:
1047                 ret = channel_bctrl(bch, arg);
1048                 break;
1049         default:
1050                 pr_info("%s: %s unknown prim(%x)\n",
1051                         card->name, __func__, cmd);
1052         }
1053         return ret;
1054 }
1055
1056 static int
1057 w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
1058 {
1059         struct mISDNdevice      *dev = container_of(ch, struct mISDNdevice, D);
1060         struct dchannel         *dch = container_of(dev, struct dchannel, dev);
1061         struct w6692_hw         *card = container_of(dch, struct w6692_hw, dch);
1062         int                     ret = -EINVAL;
1063         struct mISDNhead        *hh = mISDN_HEAD_P(skb);
1064         u32                     id;
1065         u_long                  flags;
1066
1067         switch (hh->prim) {
1068         case PH_DATA_REQ:
1069                 spin_lock_irqsave(&card->lock, flags);
1070                 ret = dchannel_senddata(dch, skb);
1071                 if (ret > 0) { /* direct TX */
1072                         id = hh->id; /* skb can be freed */
1073                         W6692_fill_Dfifo(card);
1074                         ret = 0;
1075                         spin_unlock_irqrestore(&card->lock, flags);
1076                         queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
1077                 } else
1078                         spin_unlock_irqrestore(&card->lock, flags);
1079                 return ret;
1080         case PH_ACTIVATE_REQ:
1081                 ret = l1_event(dch->l1, hh->prim);
1082                 break;
1083         case PH_DEACTIVATE_REQ:
1084                 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
1085                 ret = l1_event(dch->l1, hh->prim);
1086                 break;
1087         }
1088
1089         if (!ret)
1090                 dev_kfree_skb(skb);
1091         return ret;
1092 }
1093
1094 static int
1095 w6692_l1callback(struct dchannel *dch, u32 cmd)
1096 {
1097         struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1098         u_long flags;
1099
1100         pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state);
1101         switch (cmd) {
1102         case INFO3_P8:
1103                 spin_lock_irqsave(&card->lock, flags);
1104                 ph_command(card, W_L1CMD_AR8);
1105                 spin_unlock_irqrestore(&card->lock, flags);
1106                 break;
1107         case INFO3_P10:
1108                 spin_lock_irqsave(&card->lock, flags);
1109                 ph_command(card, W_L1CMD_AR10);
1110                 spin_unlock_irqrestore(&card->lock, flags);
1111                 break;
1112         case HW_RESET_REQ:
1113                 spin_lock_irqsave(&card->lock, flags);
1114                 if (card->state != W_L1IND_DRD)
1115                         ph_command(card, W_L1CMD_RST);
1116                 ph_command(card, W_L1CMD_ECK);
1117                 spin_unlock_irqrestore(&card->lock, flags);
1118                 break;
1119         case HW_DEACT_REQ:
1120                 skb_queue_purge(&dch->squeue);
1121                 if (dch->tx_skb) {
1122                         dev_kfree_skb(dch->tx_skb);
1123                         dch->tx_skb = NULL;
1124                 }
1125                 dch->tx_idx = 0;
1126                 if (dch->rx_skb) {
1127                         dev_kfree_skb(dch->rx_skb);
1128                         dch->rx_skb = NULL;
1129                 }
1130                 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
1131                 if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags))
1132                         del_timer(&dch->timer);
1133                 break;
1134         case HW_POWERUP_REQ:
1135                 spin_lock_irqsave(&card->lock, flags);
1136                 ph_command(card, W_L1CMD_ECK);
1137                 spin_unlock_irqrestore(&card->lock, flags);
1138                 break;
1139         case PH_ACTIVATE_IND:
1140                 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
1141                 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
1142                             GFP_ATOMIC);
1143                 break;
1144         case PH_DEACTIVATE_IND:
1145                 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
1146                 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
1147                             GFP_ATOMIC);
1148                 break;
1149         default:
1150                 pr_debug("%s: %s unknown command %x\n", card->name,
1151                          __func__, cmd);
1152                 return -1;
1153         }
1154         return 0;
1155 }
1156
1157 static int
1158 open_dchannel(struct w6692_hw *card, struct channel_req *rq, void *caller)
1159 {
1160         pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__,
1161                  card->dch.dev.id, caller);
1162         if (rq->protocol != ISDN_P_TE_S0)
1163                 return -EINVAL;
1164         if (rq->adr.channel == 1)
1165                 /* E-Channel not supported */
1166                 return -EINVAL;
1167         rq->ch = &card->dch.dev.D;
1168         rq->ch->protocol = rq->protocol;
1169         if (card->dch.state == 7)
1170                 _queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
1171                             0, NULL, GFP_KERNEL);
1172         return 0;
1173 }
1174
1175 static int
1176 w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1177 {
1178         struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
1179         struct dchannel *dch = container_of(dev, struct dchannel, dev);
1180         struct w6692_hw *card = container_of(dch, struct w6692_hw, dch);
1181         struct channel_req *rq;
1182         int err = 0;
1183
1184         pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg);
1185         switch (cmd) {
1186         case OPEN_CHANNEL:
1187                 rq = arg;
1188                 if (rq->protocol == ISDN_P_TE_S0)
1189                         err = open_dchannel(card, rq, __builtin_return_address(0));
1190                 else
1191                         err = open_bchannel(card, rq);
1192                 if (err)
1193                         break;
1194                 if (!try_module_get(THIS_MODULE))
1195                         pr_info("%s: cannot get module\n", card->name);
1196                 break;
1197         case CLOSE_CHANNEL:
1198                 pr_debug("%s: dev(%d) close from %p\n", card->name,
1199                          dch->dev.id, __builtin_return_address(0));
1200                 module_put(THIS_MODULE);
1201                 break;
1202         case CONTROL_CHANNEL:
1203                 err = channel_ctrl(card, arg);
1204                 break;
1205         default:
1206                 pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd);
1207                 return -EINVAL;
1208         }
1209         return err;
1210 }
1211
1212 static int
1213 setup_w6692(struct w6692_hw *card)
1214 {
1215         u32     val;
1216
1217         if (!request_region(card->addr, 256, card->name)) {
1218                 pr_info("%s: config port %x-%x already in use\n", card->name,
1219                         card->addr, card->addr + 255);
1220                 return -EIO;
1221         }
1222         W6692Version(card);
1223         card->bc[0].addr = card->addr;
1224         card->bc[1].addr = card->addr + 0x40;
1225         val = ReadW6692(card, W_ISTA);
1226         if (debug & DEBUG_HW)
1227                 pr_notice("%s ISTA=%02x\n", card->name, val);
1228         val = ReadW6692(card, W_IMASK);
1229         if (debug & DEBUG_HW)
1230                 pr_notice("%s IMASK=%02x\n", card->name, val);
1231         val = ReadW6692(card, W_D_EXIR);
1232         if (debug & DEBUG_HW)
1233                 pr_notice("%s D_EXIR=%02x\n", card->name, val);
1234         val = ReadW6692(card, W_D_EXIM);
1235         if (debug & DEBUG_HW)
1236                 pr_notice("%s D_EXIM=%02x\n", card->name, val);
1237         val = ReadW6692(card, W_D_RSTA);
1238         if (debug & DEBUG_HW)
1239                 pr_notice("%s D_RSTA=%02x\n", card->name, val);
1240         return 0;
1241 }
1242
1243 static void
1244 release_card(struct w6692_hw *card)
1245 {
1246         u_long  flags;
1247
1248         spin_lock_irqsave(&card->lock, flags);
1249         disable_hwirq(card);
1250         w6692_mode(&card->bc[0], ISDN_P_NONE);
1251         w6692_mode(&card->bc[1], ISDN_P_NONE);
1252         if ((card->fmask & led) || card->subtype == W6692_USR) {
1253                 card->xdata |= 0x04;    /*  LED OFF */
1254                 WriteW6692(card, W_XDATA, card->xdata);
1255         }
1256         spin_unlock_irqrestore(&card->lock, flags);
1257         free_irq(card->irq, card);
1258         l1_event(card->dch.l1, CLOSE_CHANNEL);
1259         mISDN_unregister_device(&card->dch.dev);
1260         release_region(card->addr, 256);
1261         mISDN_freebchannel(&card->bc[1].bch);
1262         mISDN_freebchannel(&card->bc[0].bch);
1263         mISDN_freedchannel(&card->dch);
1264         write_lock_irqsave(&card_lock, flags);
1265         list_del(&card->list);
1266         write_unlock_irqrestore(&card_lock, flags);
1267         pci_disable_device(card->pdev);
1268         pci_set_drvdata(card->pdev, NULL);
1269         kfree(card);
1270 }
1271
1272 static int
1273 setup_instance(struct w6692_hw *card)
1274 {
1275         int             i, err;
1276         u_long          flags;
1277
1278         snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1);
1279         write_lock_irqsave(&card_lock, flags);
1280         list_add_tail(&card->list, &Cards);
1281         write_unlock_irqrestore(&card_lock, flags);
1282         card->fmask = (1 << w6692_cnt);
1283         _set_debug(card);
1284         spin_lock_init(&card->lock);
1285         mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh);
1286         card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0);
1287         card->dch.dev.D.send = w6692_l2l1D;
1288         card->dch.dev.D.ctrl = w6692_dctrl;
1289         card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1290                 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
1291         card->dch.hw = card;
1292         card->dch.dev.nrbchan = 2;
1293         for (i = 0; i < 2; i++) {
1294                 mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM,
1295                                    W_B_FIFO_THRESH);
1296                 card->bc[i].bch.hw = card;
1297                 card->bc[i].bch.nr = i + 1;
1298                 card->bc[i].bch.ch.nr = i + 1;
1299                 card->bc[i].bch.ch.send = w6692_l2l1B;
1300                 card->bc[i].bch.ch.ctrl = w6692_bctrl;
1301                 set_channelmap(i + 1, card->dch.dev.channelmap);
1302                 list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels);
1303         }
1304         err = setup_w6692(card);
1305         if (err)
1306                 goto error_setup;
1307         err = mISDN_register_device(&card->dch.dev, &card->pdev->dev,
1308                                     card->name);
1309         if (err)
1310                 goto error_reg;
1311         err = init_card(card);
1312         if (err)
1313                 goto error_init;
1314         err = create_l1(&card->dch, w6692_l1callback);
1315         if (!err) {
1316                 w6692_cnt++;
1317                 pr_notice("W6692 %d cards installed\n", w6692_cnt);
1318                 return 0;
1319         }
1320
1321         free_irq(card->irq, card);
1322 error_init:
1323         mISDN_unregister_device(&card->dch.dev);
1324 error_reg:
1325         release_region(card->addr, 256);
1326 error_setup:
1327         mISDN_freebchannel(&card->bc[1].bch);
1328         mISDN_freebchannel(&card->bc[0].bch);
1329         mISDN_freedchannel(&card->dch);
1330         write_lock_irqsave(&card_lock, flags);
1331         list_del(&card->list);
1332         write_unlock_irqrestore(&card_lock, flags);
1333         kfree(card);
1334         return err;
1335 }
1336
1337 static int
1338 w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1339 {
1340         int             err = -ENOMEM;
1341         struct w6692_hw *card;
1342         struct w6692map *m = (struct w6692map *)ent->driver_data;
1343
1344         card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL);
1345         if (!card) {
1346                 pr_info("No kmem for w6692 card\n");
1347                 return err;
1348         }
1349         card->pdev = pdev;
1350         card->subtype = m->subtype;
1351         err = pci_enable_device(pdev);
1352         if (err) {
1353                 kfree(card);
1354                 return err;
1355         }
1356
1357         printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n",
1358                m->name, pci_name(pdev));
1359
1360         card->addr = pci_resource_start(pdev, 1);
1361         card->irq = pdev->irq;
1362         pci_set_drvdata(pdev, card);
1363         err = setup_instance(card);
1364         if (err)
1365                 pci_set_drvdata(pdev, NULL);
1366         return err;
1367 }
1368
1369 static void
1370 w6692_remove_pci(struct pci_dev *pdev)
1371 {
1372         struct w6692_hw *card = pci_get_drvdata(pdev);
1373
1374         if (card)
1375                 release_card(card);
1376         else
1377                 if (debug)
1378                         pr_notice("%s: drvdata already removed\n", __func__);
1379 }
1380
1381 static const struct pci_device_id w6692_ids[] = {
1382         { PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH,
1383           PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]},
1384         { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
1385           PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0,
1386           (ulong)&w6692_map[2]},
1387         { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692,
1388           PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]},
1389         { }
1390 };
1391 MODULE_DEVICE_TABLE(pci, w6692_ids);
1392
1393 static struct pci_driver w6692_driver = {
1394         .name =  "w6692",
1395         .probe = w6692_probe,
1396         .remove = w6692_remove_pci,
1397         .id_table = w6692_ids,
1398 };
1399
1400 static int __init w6692_init(void)
1401 {
1402         int err;
1403
1404         pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV);
1405
1406         err = pci_register_driver(&w6692_driver);
1407         return err;
1408 }
1409
1410 static void __exit w6692_cleanup(void)
1411 {
1412         pci_unregister_driver(&w6692_driver);
1413 }
1414
1415 module_init(w6692_init);
1416 module_exit(w6692_cleanup);