drivers/isdn/hardware/mISDN/mISDNisar.c

   1 /*
   2  * mISDNisar.c   ISAR (Siemens PSB 7110) specific functions
   3  *
   4  * Author Karsten Keil (keil@isdn4linux.de)
   5  *
   6  * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 /* define this to enable static debug messages, if you kernel supports
  24  * dynamic debugging, you should use debugfs for this
  25  */
  26 /* #define DEBUG */
  27
  28 #include <linux/gfp.h>
  29 #include <linux/delay.h>
  30 #include <linux/vmalloc.h>
  31 #include <linux/mISDNhw.h>
  32 #include <linux/module.h>
  33 #include "isar.h"
  34
  35 #define ISAR_REV        "2.1"
  36
  37 MODULE_AUTHOR("Karsten Keil");
  38 MODULE_LICENSE("GPL v2");
  39 MODULE_VERSION(ISAR_REV);
  40
  41 #define DEBUG_HW_FIRMWARE_FIFO  0x10000
  42
  43 static const u8 faxmodulation_s[] = "3,24,48,72,73,74,96,97,98,121,122,145,146";
  44 static const u8 faxmodulation[] = {3, 24, 48, 72, 73, 74, 96, 97, 98, 121,
  45                                    122, 145, 146};
  46 #define FAXMODCNT 13
  47
  48 static void isar_setup(struct isar_hw *);
  49
  50 static inline int
  51 waitforHIA(struct isar_hw *isar, int timeout)
  52 {
  53         int t = timeout;
  54         u8 val = isar->read_reg(isar->hw, ISAR_HIA);
  55
  56         while ((val & 1) && t) {
  57                 udelay(1);
  58                 t--;
  59                 val = isar->read_reg(isar->hw, ISAR_HIA);
  60         }
  61         pr_debug("%s: HIA after %dus\n", isar->name, timeout - t);
  62         return timeout;
  63 }
  64
  65 /*
  66  * send msg to ISAR mailbox
  67  * if msg is NULL use isar->buf
  68  */
  69 static int
  70 send_mbox(struct isar_hw *isar, u8 his, u8 creg, u8 len, u8 *msg)
  71 {
  72         if (!waitforHIA(isar, 1000))
  73                 return 0;
  74         pr_debug("send_mbox(%02x,%02x,%d)\n", his, creg, len);
  75         isar->write_reg(isar->hw, ISAR_CTRL_H, creg);
  76         isar->write_reg(isar->hw, ISAR_CTRL_L, len);
  77         isar->write_reg(isar->hw, ISAR_WADR, 0);
  78         if (!msg)
  79                 msg = isar->buf;
  80         if (msg && len) {
  81                 isar->write_fifo(isar->hw, ISAR_MBOX, msg, len);
  82                 if (isar->ch[0].bch.debug & DEBUG_HW_BFIFO) {
  83                         int l = 0;
  84
  85                         while (l < (int)len) {
  86                                 hex_dump_to_buffer(msg + l, len - l, 32, 1,
  87                                                    isar->log, 256, 1);
  88                                 pr_debug("%s: %s %02x: %s\n", isar->name,
  89                                          __func__, l, isar->log);
  90                                 l += 32;
  91                         }
  92                 }
  93         }
  94         isar->write_reg(isar->hw, ISAR_HIS, his);
  95         waitforHIA(isar, 1000);
  96         return 1;
  97 }
  98
  99 /*
 100  * receive message from ISAR mailbox
 101  * if msg is NULL use isar->buf
 102  */
 103 static void
 104 rcv_mbox(struct isar_hw *isar, u8 *msg)
 105 {
 106         if (!msg)
 107                 msg = isar->buf;
 108         isar->write_reg(isar->hw, ISAR_RADR, 0);
 109         if (msg && isar->clsb) {
 110                 isar->read_fifo(isar->hw, ISAR_MBOX, msg, isar->clsb);
 111                 if (isar->ch[0].bch.debug & DEBUG_HW_BFIFO) {
 112                         int l = 0;
 113
 114                         while (l < (int)isar->clsb) {
 115                                 hex_dump_to_buffer(msg + l, isar->clsb - l, 32,
 116                                                    1, isar->log, 256, 1);
 117                                 pr_debug("%s: %s %02x: %s\n", isar->name,
 118                                          __func__, l, isar->log);
 119                                 l += 32;
 120                         }
 121                 }
 122         }
 123         isar->write_reg(isar->hw, ISAR_IIA, 0);
 124 }
 125
 126 static inline void
 127 get_irq_infos(struct isar_hw *isar)
 128 {
 129         isar->iis = isar->read_reg(isar->hw, ISAR_IIS);
 130         isar->cmsb = isar->read_reg(isar->hw, ISAR_CTRL_H);
 131         isar->clsb = isar->read_reg(isar->hw, ISAR_CTRL_L);
 132         pr_debug("%s: rcv_mbox(%02x,%02x,%d)\n", isar->name,
 133                  isar->iis, isar->cmsb, isar->clsb);
 134 }
 135
 136 /*
 137  * poll answer message from ISAR mailbox
 138  * should be used only with ISAR IRQs disabled before DSP was started
 139  *
 140  */
 141 static int
 142 poll_mbox(struct isar_hw *isar, int maxdelay)
 143 {
 144         int t = maxdelay;
 145         u8 irq;
 146
 147         irq = isar->read_reg(isar->hw, ISAR_IRQBIT);
 148         while (t && !(irq & ISAR_IRQSTA)) {
 149                 udelay(1);
 150                 t--;
 151         }
 152         if (t)  {
 153                 get_irq_infos(isar);
 154                 rcv_mbox(isar, NULL);
 155         }
 156         pr_debug("%s: pulled %d bytes after %d us\n",
 157                  isar->name, isar->clsb, maxdelay - t);
 158         return t;
 159 }
 160
 161 static int
 162 ISARVersion(struct isar_hw *isar)
 163 {
 164         int ver;
 165
 166         /* disable ISAR IRQ */
 167         isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
 168         isar->buf[0] = ISAR_MSG_HWVER;
 169         isar->buf[1] = 0;
 170         isar->buf[2] = 1;
 171         if (!send_mbox(isar, ISAR_HIS_VNR, 0, 3, NULL))
 172                 return -1;
 173         if (!poll_mbox(isar, 1000))
 174                 return -2;
 175         if (isar->iis == ISAR_IIS_VNR) {
 176                 if (isar->clsb == 1) {
 177                         ver = isar->buf[0] & 0xf;
 178                         return ver;
 179                 }
 180                 return -3;
 181         }
 182         return -4;
 183 }
 184
 185 static int
 186 load_firmware(struct isar_hw *isar, const u8 *buf, int size)
 187 {
 188         u32     saved_debug = isar->ch[0].bch.debug;
 189         int     ret, cnt;
 190         u8      nom, noc;
 191         u16     left, val, *sp = (u16 *)buf;
 192         u8      *mp;
 193         u_long  flags;
 194
 195         struct {
 196                 u16 sadr;
 197                 u16 len;
 198                 u16 d_key;
 199         } blk_head;
 200
 201         if (1 != isar->version) {
 202                 pr_err("%s: ISAR wrong version %d firmware download aborted\n",
 203                        isar->name, isar->version);
 204                 return -EINVAL;
 205         }
 206         if (!(saved_debug & DEBUG_HW_FIRMWARE_FIFO))
 207                 isar->ch[0].bch.debug &= ~DEBUG_HW_BFIFO;
 208         pr_debug("%s: load firmware %d words (%d bytes)\n",
 209                  isar->name, size / 2, size);
 210         cnt = 0;
 211         size /= 2;
 212         /* disable ISAR IRQ */
 213         spin_lock_irqsave(isar->hwlock, flags);
 214         isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
 215         spin_unlock_irqrestore(isar->hwlock, flags);
 216         while (cnt < size) {
 217                 blk_head.sadr = le16_to_cpu(*sp++);
 218                 blk_head.len = le16_to_cpu(*sp++);
 219                 blk_head.d_key = le16_to_cpu(*sp++);
 220                 cnt += 3;
 221                 pr_debug("ISAR firmware block (%#x,%d,%#x)\n",
 222                          blk_head.sadr, blk_head.len, blk_head.d_key & 0xff);
 223                 left = blk_head.len;
 224                 if (cnt + left > size) {
 225                         pr_info("%s: firmware error have %d need %d words\n",
 226                                 isar->name, size, cnt + left);
 227                         ret = -EINVAL;
 228                         goto reterrflg;
 229                 }
 230                 spin_lock_irqsave(isar->hwlock, flags);
 231                 if (!send_mbox(isar, ISAR_HIS_DKEY, blk_head.d_key & 0xff,
 232                                0, NULL)) {
 233                         pr_info("ISAR send_mbox dkey failed\n");
 234                         ret = -ETIME;
 235                         goto reterror;
 236                 }
 237                 if (!poll_mbox(isar, 1000)) {
 238                         pr_warning("ISAR poll_mbox dkey failed\n");
 239                         ret = -ETIME;
 240                         goto reterror;
 241                 }
 242                 spin_unlock_irqrestore(isar->hwlock, flags);
 243                 if ((isar->iis != ISAR_IIS_DKEY) || isar->cmsb || isar->clsb) {
 244                         pr_info("ISAR wrong dkey response (%x,%x,%x)\n",
 245                                 isar->iis, isar->cmsb, isar->clsb);
 246                         ret = 1;
 247                         goto reterrflg;
 248                 }
 249                 while (left > 0) {
 250                         if (left > 126)
 251                                 noc = 126;
 252                         else
 253                                 noc = left;
 254                         nom = (2 * noc) + 3;
 255                         mp  = isar->buf;
 256                         /* the ISAR is big endian */
 257                         *mp++ = blk_head.sadr >> 8;
 258                         *mp++ = blk_head.sadr & 0xFF;
 259                         left -= noc;
 260                         cnt += noc;
 261                         *mp++ = noc;
 262                         pr_debug("%s: load %3d words at %04x\n", isar->name,
 263                                  noc, blk_head.sadr);
 264                         blk_head.sadr += noc;
 265                         while (noc) {
 266                                 val = le16_to_cpu(*sp++);
 267                                 *mp++ = val >> 8;
 268                                 *mp++ = val & 0xFF;
 269                                 noc--;
 270                         }
 271                         spin_lock_irqsave(isar->hwlock, flags);
 272                         if (!send_mbox(isar, ISAR_HIS_FIRM, 0, nom, NULL)) {
 273                                 pr_info("ISAR send_mbox prog failed\n");
 274                                 ret = -ETIME;
 275                                 goto reterror;
 276                         }
 277                         if (!poll_mbox(isar, 1000)) {
 278                                 pr_info("ISAR poll_mbox prog failed\n");
 279                                 ret = -ETIME;
 280                                 goto reterror;
 281                         }
 282                         spin_unlock_irqrestore(isar->hwlock, flags);
 283                         if ((isar->iis != ISAR_IIS_FIRM) ||
 284                             isar->cmsb || isar->clsb) {
 285                                 pr_info("ISAR wrong prog response (%x,%x,%x)\n",
 286                                         isar->iis, isar->cmsb, isar->clsb);
 287                                 ret = -EIO;
 288                                 goto reterrflg;
 289                         }
 290                 }
 291                 pr_debug("%s: ISAR firmware block %d words loaded\n",
 292                          isar->name, blk_head.len);
 293         }
 294         isar->ch[0].bch.debug = saved_debug;
 295         /* 10ms delay */
 296         cnt = 10;
 297         while (cnt--)
 298                 mdelay(1);
 299         isar->buf[0] = 0xff;
 300         isar->buf[1] = 0xfe;
 301         isar->bstat = 0;
 302         spin_lock_irqsave(isar->hwlock, flags);
 303         if (!send_mbox(isar, ISAR_HIS_STDSP, 0, 2, NULL)) {
 304                 pr_info("ISAR send_mbox start dsp failed\n");
 305                 ret = -ETIME;
 306                 goto reterror;
 307         }
 308         if (!poll_mbox(isar, 1000)) {
 309                 pr_info("ISAR poll_mbox start dsp failed\n");
 310                 ret = -ETIME;
 311                 goto reterror;
 312         }
 313         if ((isar->iis != ISAR_IIS_STDSP) || isar->cmsb || isar->clsb) {
 314                 pr_info("ISAR wrong start dsp response (%x,%x,%x)\n",
 315                         isar->iis, isar->cmsb, isar->clsb);
 316                 ret = -EIO;
 317                 goto reterror;
 318         } else
 319                 pr_debug("%s: ISAR start dsp success\n", isar->name);
 320
 321         /* NORMAL mode entered */
 322         /* Enable IRQs of ISAR */
 323         isar->write_reg(isar->hw, ISAR_IRQBIT, ISAR_IRQSTA);
 324         spin_unlock_irqrestore(isar->hwlock, flags);
 325         cnt = 1000; /* max 1s */
 326         while ((!isar->bstat) && cnt) {
 327                 mdelay(1);
 328                 cnt--;
 329         }
 330         if (!cnt) {
 331                 pr_info("ISAR no general status event received\n");
 332                 ret = -ETIME;
 333                 goto reterrflg;
 334         } else
 335                 pr_debug("%s: ISAR general status event %x\n",
 336                          isar->name, isar->bstat);
 337         /* 10ms delay */
 338         cnt = 10;
 339         while (cnt--)
 340                 mdelay(1);
 341         isar->iis = 0;
 342         spin_lock_irqsave(isar->hwlock, flags);
 343         if (!send_mbox(isar, ISAR_HIS_DIAG, ISAR_CTRL_STST, 0, NULL)) {
 344                 pr_info("ISAR send_mbox self tst failed\n");
 345                 ret = -ETIME;
 346                 goto reterror;
 347         }
 348         spin_unlock_irqrestore(isar->hwlock, flags);
 349         cnt = 10000; /* max 100 ms */
 350         while ((isar->iis != ISAR_IIS_DIAG) && cnt) {
 351                 udelay(10);
 352                 cnt--;
 353         }
 354         mdelay(1);
 355         if (!cnt) {
 356                 pr_info("ISAR no self tst response\n");
 357                 ret = -ETIME;
 358                 goto reterrflg;
 359         }
 360         if ((isar->cmsb == ISAR_CTRL_STST) && (isar->clsb == 1)
 361             && (isar->buf[0] == 0))
 362                 pr_debug("%s: ISAR selftest OK\n", isar->name);
 363         else {
 364                 pr_info("ISAR selftest not OK %x/%x/%x\n",
 365                         isar->cmsb, isar->clsb, isar->buf[0]);
 366                 ret = -EIO;
 367                 goto reterrflg;
 368         }
 369         spin_lock_irqsave(isar->hwlock, flags);
 370         isar->iis = 0;
 371         if (!send_mbox(isar, ISAR_HIS_DIAG, ISAR_CTRL_SWVER, 0, NULL)) {
 372                 pr_info("ISAR RQST SVN failed\n");
 373                 ret = -ETIME;
 374                 goto reterror;
 375         }
 376         spin_unlock_irqrestore(isar->hwlock, flags);
 377         cnt = 30000; /* max 300 ms */
 378         while ((isar->iis != ISAR_IIS_DIAG) && cnt) {
 379                 udelay(10);
 380                 cnt--;
 381         }
 382         mdelay(1);
 383         if (!cnt) {
 384                 pr_info("ISAR no SVN response\n");
 385                 ret = -ETIME;
 386                 goto reterrflg;
 387         } else {
 388                 if ((isar->cmsb == ISAR_CTRL_SWVER) && (isar->clsb == 1)) {
 389                         pr_notice("%s: ISAR software version %#x\n",
 390                                   isar->name, isar->buf[0]);
 391                 } else {
 392                         pr_info("%s: ISAR wrong swver response (%x,%x)"
 393                                 " cnt(%d)\n", isar->name, isar->cmsb,
 394                                 isar->clsb, cnt);
 395                         ret = -EIO;
 396                         goto reterrflg;
 397                 }
 398         }
 399         spin_lock_irqsave(isar->hwlock, flags);
 400         isar_setup(isar);
 401         spin_unlock_irqrestore(isar->hwlock, flags);
 402         ret = 0;
 403 reterrflg:
 404         spin_lock_irqsave(isar->hwlock, flags);
 405 reterror:
 406         isar->ch[0].bch.debug = saved_debug;
 407         if (ret)
 408                 /* disable ISAR IRQ */
 409                 isar->write_reg(isar->hw, ISAR_IRQBIT, 0);
 410         spin_unlock_irqrestore(isar->hwlock, flags);
 411         return ret;
 412 }
 413
 414 static inline void
 415 deliver_status(struct isar_ch *ch, int status)
 416 {
 417         pr_debug("%s: HL->LL FAXIND %x\n", ch->is->name, status);
 418         _queue_data(&ch->bch.ch, PH_CONTROL_IND, status, 0, NULL, GFP_ATOMIC);
 419 }
 420
 421 static inline void
 422 isar_rcv_frame(struct isar_ch *ch)
 423 {
 424         u8              *ptr;
 425
 426         if (!ch->is->clsb) {
 427                 pr_debug("%s; ISAR zero len frame\n", ch->is->name);
 428                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 429                 return;
 430         }
 431         switch (ch->bch.state) {
 432         case ISDN_P_NONE:
 433                 pr_debug("%s: ISAR protocol 0 spurious IIS_RDATA %x/%x/%x\n",
 434                          ch->is->name, ch->is->iis, ch->is->cmsb, ch->is->clsb);
 435                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 436                 break;
 437         case ISDN_P_B_RAW:
 438         case ISDN_P_B_L2DTMF:
 439         case ISDN_P_B_MODEM_ASYNC:
 440                 if (!ch->bch.rx_skb) {
 441                         ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
 442                                                       GFP_ATOMIC);
 443                         if (unlikely(!ch->bch.rx_skb)) {
 444                                 pr_info("%s: B receive out of memory\n",
 445                                         ch->is->name);
 446                                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 447                                 break;
 448                         }
 449                 }
 450                 rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
 451                 recv_Bchannel(&ch->bch, 0);
 452                 break;
 453         case ISDN_P_B_HDLC:
 454                 if (!ch->bch.rx_skb) {
 455                         ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
 456                                                       GFP_ATOMIC);
 457                         if (unlikely(!ch->bch.rx_skb)) {
 458                                 pr_info("%s: B receive out of memory\n",
 459                                         ch->is->name);
 460                                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 461                                 break;
 462                         }
 463                 }
 464                 if ((ch->bch.rx_skb->len + ch->is->clsb) >
 465                     (ch->bch.maxlen + 2)) {
 466                         pr_debug("%s: incoming packet too large\n",
 467                                  ch->is->name);
 468                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 469                         skb_trim(ch->bch.rx_skb, 0);
 470                         break;
 471                 }
 472                 if (ch->is->cmsb & HDLC_ERROR) {
 473                         pr_debug("%s: ISAR frame error %x len %d\n",
 474                                  ch->is->name, ch->is->cmsb, ch->is->clsb);
 475 #ifdef ERROR_STATISTIC
 476                         if (ch->is->cmsb & HDLC_ERR_RER)
 477                                 ch->bch.err_inv++;
 478                         if (ch->is->cmsb & HDLC_ERR_CER)
 479                                 ch->bch.err_crc++;
 480 #endif
 481                         skb_trim(ch->bch.rx_skb, 0);
 482                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 483                         break;
 484                 }
 485                 if (ch->is->cmsb & HDLC_FSD)
 486                         skb_trim(ch->bch.rx_skb, 0);
 487                 ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
 488                 rcv_mbox(ch->is, ptr);
 489                 if (ch->is->cmsb & HDLC_FED) {
 490                         if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
 491                                 pr_debug("%s: ISAR frame to short %d\n",
 492                                          ch->is->name, ch->bch.rx_skb->len);
 493                                 skb_trim(ch->bch.rx_skb, 0);
 494                                 break;
 495                         }
 496                         skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
 497                         recv_Bchannel(&ch->bch, 0);
 498                 }
 499                 break;
 500         case ISDN_P_B_T30_FAX:
 501                 if (ch->state != STFAX_ACTIV) {
 502                         pr_debug("%s: isar_rcv_frame: not ACTIV\n",
 503                                  ch->is->name);
 504                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 505                         if (ch->bch.rx_skb)
 506                                 skb_trim(ch->bch.rx_skb, 0);
 507                         break;
 508                 }
 509                 if (!ch->bch.rx_skb) {
 510                         ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
 511                                                       GFP_ATOMIC);
 512                         if (unlikely(!ch->bch.rx_skb)) {
 513                                 pr_info("%s: B receive out of memory\n",
 514                                         __func__);
 515                                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 516                                 break;
 517                         }
 518                 }
 519                 if (ch->cmd == PCTRL_CMD_FRM) {
 520                         rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
 521                         pr_debug("%s: isar_rcv_frame: %d\n",
 522                                  ch->is->name, ch->bch.rx_skb->len);
 523                         if (ch->is->cmsb & SART_NMD) { /* ABORT */
 524                                 pr_debug("%s: isar_rcv_frame: no more data\n",
 525                                          ch->is->name);
 526                                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 527                                 send_mbox(ch->is, SET_DPS(ch->dpath) |
 528                                           ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
 529                                           0, NULL);
 530                                 ch->state = STFAX_ESCAPE;
 531                                 /* set_skb_flag(skb, DF_NOMOREDATA); */
 532                         }
 533                         recv_Bchannel(&ch->bch, 0);
 534                         if (ch->is->cmsb & SART_NMD)
 535                                 deliver_status(ch, HW_MOD_NOCARR);
 536                         break;
 537                 }
 538                 if (ch->cmd != PCTRL_CMD_FRH) {
 539                         pr_debug("%s: isar_rcv_frame: unknown fax mode %x\n",
 540                                  ch->is->name, ch->cmd);
 541                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 542                         if (ch->bch.rx_skb)
 543                                 skb_trim(ch->bch.rx_skb, 0);
 544                         break;
 545                 }
 546                 /* PCTRL_CMD_FRH */
 547                 if ((ch->bch.rx_skb->len + ch->is->clsb) >
 548                     (ch->bch.maxlen + 2)) {
 549                         pr_info("%s: %s incoming packet too large\n",
 550                                 ch->is->name, __func__);
 551                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 552                         skb_trim(ch->bch.rx_skb, 0);
 553                         break;
 554                 }  else if (ch->is->cmsb & HDLC_ERROR) {
 555                         pr_info("%s: ISAR frame error %x len %d\n",
 556                                 ch->is->name, ch->is->cmsb, ch->is->clsb);
 557                         skb_trim(ch->bch.rx_skb, 0);
 558                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 559                         break;
 560                 }
 561                 if (ch->is->cmsb & HDLC_FSD)
 562                         skb_trim(ch->bch.rx_skb, 0);
 563                 ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
 564                 rcv_mbox(ch->is, ptr);
 565                 if (ch->is->cmsb & HDLC_FED) {
 566                         if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
 567                                 pr_info("%s: ISAR frame to short %d\n",
 568                                         ch->is->name, ch->bch.rx_skb->len);
 569                                 skb_trim(ch->bch.rx_skb, 0);
 570                                 break;
 571                         }
 572                         skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
 573                         recv_Bchannel(&ch->bch, 0);
 574                 }
 575                 if (ch->is->cmsb & SART_NMD) { /* ABORT */
 576                         pr_debug("%s: isar_rcv_frame: no more data\n",
 577                                  ch->is->name);
 578                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 579                         if (ch->bch.rx_skb)
 580                                 skb_trim(ch->bch.rx_skb, 0);
 581                         send_mbox(ch->is, SET_DPS(ch->dpath) |
 582                                   ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC, 0, NULL);
 583                         ch->state = STFAX_ESCAPE;
 584                         deliver_status(ch, HW_MOD_NOCARR);
 585                 }
 586                 break;
 587         default:
 588                 pr_info("isar_rcv_frame protocol (%x)error\n", ch->bch.state);
 589                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 590                 break;
 591         }
 592 }
 593
 594 static void
 595 isar_fill_fifo(struct isar_ch *ch)
 596 {
 597         int count;
 598         u8 msb;
 599         u8 *ptr;
 600
 601         pr_debug("%s: ch%d  tx_skb %p tx_idx %d\n",
 602                  ch->is->name, ch->bch.nr, ch->bch.tx_skb, ch->bch.tx_idx);
 603         if (!ch->bch.tx_skb)
 604                 return;
 605         count = ch->bch.tx_skb->len - ch->bch.tx_idx;
 606         if (count <= 0)
 607                 return;
 608         if (!(ch->is->bstat &
 609               (ch->dpath == 1 ? BSTAT_RDM1 : BSTAT_RDM2)))
 610                 return;
 611         if (count > ch->mml) {
 612                 msb = 0;
 613                 count = ch->mml;
 614         } else {
 615                 msb = HDLC_FED;
 616         }
 617         ptr = ch->bch.tx_skb->data + ch->bch.tx_idx;
 618         if (!ch->bch.tx_idx) {
 619                 pr_debug("%s: frame start\n", ch->is->name);
 620                 if ((ch->bch.state == ISDN_P_B_T30_FAX) &&
 621                     (ch->cmd == PCTRL_CMD_FTH)) {
 622                         if (count > 1) {
 623                                 if ((ptr[0] == 0xff) && (ptr[1] == 0x13)) {
 624                                         /* last frame */
 625                                         test_and_set_bit(FLG_LASTDATA,
 626                                                          &ch->bch.Flags);
 627                                         pr_debug("%s: set LASTDATA\n",
 628                                                  ch->is->name);
 629                                         if (msb == HDLC_FED)
 630                                                 test_and_set_bit(FLG_DLEETX,
 631                                                                  &ch->bch.Flags);
 632                                 }
 633                         }
 634                 }
 635                 msb |= HDLC_FST;
 636         }
 637         ch->bch.tx_idx += count;
 638         switch (ch->bch.state) {
 639         case ISDN_P_NONE:
 640                 pr_info("%s: wrong protocol 0\n", __func__);
 641                 break;
 642         case ISDN_P_B_RAW:
 643         case ISDN_P_B_L2DTMF:
 644         case ISDN_P_B_MODEM_ASYNC:
 645                 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 646                           0, count, ptr);
 647                 break;
 648         case ISDN_P_B_HDLC:
 649                 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 650                           msb, count, ptr);
 651                 break;
 652         case ISDN_P_B_T30_FAX:
 653                 if (ch->state != STFAX_ACTIV)
 654                         pr_debug("%s: not ACTIV\n", ch->is->name);
 655                 else if (ch->cmd == PCTRL_CMD_FTH)
 656                         send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 657                                   msb, count, ptr);
 658                 else if (ch->cmd == PCTRL_CMD_FTM)
 659                         send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 660                                   0, count, ptr);
 661                 else
 662                         pr_debug("%s: not FTH/FTM\n", ch->is->name);
 663                 break;
 664         default:
 665                 pr_info("%s: protocol(%x) error\n",
 666                         __func__, ch->bch.state);
 667                 break;
 668         }
 669 }
 670
 671 static inline struct isar_ch *
 672 sel_bch_isar(struct isar_hw *isar, u8 dpath)
 673 {
 674         struct isar_ch  *base = &isar->ch[0];
 675
 676         if ((!dpath) || (dpath > 2))
 677                 return NULL;
 678         if (base->dpath == dpath)
 679                 return base;
 680         base++;
 681         if (base->dpath == dpath)
 682                 return base;
 683         return NULL;
 684 }
 685
 686 static void
 687 send_next(struct isar_ch *ch)
 688 {
 689         pr_debug("%s: %s ch%d tx_skb %p tx_idx %d\n",
 690                  ch->is->name, __func__, ch->bch.nr,
 691                  ch->bch.tx_skb, ch->bch.tx_idx);
 692         if (ch->bch.state == ISDN_P_B_T30_FAX) {
 693                 if (ch->cmd == PCTRL_CMD_FTH) {
 694                         if (test_bit(FLG_LASTDATA, &ch->bch.Flags)) {
 695                                 pr_debug("set NMD_DATA\n");
 696                                 test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
 697                         }
 698                 } else if (ch->cmd == PCTRL_CMD_FTM) {
 699                         if (test_bit(FLG_DLEETX, &ch->bch.Flags)) {
 700                                 test_and_set_bit(FLG_LASTDATA, &ch->bch.Flags);
 701                                 test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
 702                         }
 703                 }
 704         }
 705         if (ch->bch.tx_skb) {
 706                 /* send confirm, on trans, free on hdlc. */
 707                 if (test_bit(FLG_TRANSPARENT, &ch->bch.Flags))
 708                         confirm_Bsend(&ch->bch);
 709                 dev_kfree_skb(ch->bch.tx_skb);
 710         }
 711         if (get_next_bframe(&ch->bch))
 712                 isar_fill_fifo(ch);
 713         else {
 714                 if (test_and_clear_bit(FLG_DLEETX, &ch->bch.Flags)) {
 715                         if (test_and_clear_bit(FLG_LASTDATA,
 716                                                &ch->bch.Flags)) {
 717                                 if (test_and_clear_bit(FLG_NMD_DATA,
 718                                                        &ch->bch.Flags)) {
 719                                         u8 zd = 0;
 720                                         send_mbox(ch->is, SET_DPS(ch->dpath) |
 721                                                   ISAR_HIS_SDATA, 0x01, 1, &zd);
 722                                 }
 723                                 test_and_set_bit(FLG_LL_OK, &ch->bch.Flags);
 724                         } else {
 725                                 deliver_status(ch, HW_MOD_CONNECT);
 726                         }
 727                 }
 728         }
 729 }
 730
 731 static void
 732 check_send(struct isar_hw *isar, u8 rdm)
 733 {
 734         struct isar_ch  *ch;
 735
 736         pr_debug("%s: rdm %x\n", isar->name, rdm);
 737         if (rdm & BSTAT_RDM1) {
 738                 ch = sel_bch_isar(isar, 1);
 739                 if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
 740                         if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
 741                                                ch->bch.tx_idx))
 742                                 isar_fill_fifo(ch);
 743                         else
 744                                 send_next(ch);
 745                 }
 746         }
 747         if (rdm & BSTAT_RDM2) {
 748                 ch = sel_bch_isar(isar, 2);
 749                 if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
 750                         if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
 751                                                ch->bch.tx_idx))
 752                                 isar_fill_fifo(ch);
 753                         else
 754                                 send_next(ch);
 755                 }
 756         }
 757 }
 758
 759 const char *dmril[] = {"NO SPEED", "1200/75", "NODEF2", "75/1200", "NODEF4",
 760                        "300", "600", "1200", "2400", "4800", "7200",
 761                        "9600nt", "9600t", "12000", "14400", "WRONG"};
 762 const char *dmrim[] = {"NO MOD", "NO DEF", "V32/V32b", "V22", "V21",
 763                        "Bell103", "V23", "Bell202", "V17", "V29", "V27ter"};
 764
 765 static void
 766 isar_pump_status_rsp(struct isar_ch *ch) {
 767         u8 ril = ch->is->buf[0];
 768         u8 rim;
 769
 770         if (!test_and_clear_bit(ISAR_RATE_REQ, &ch->is->Flags))
 771                 return;
 772         if (ril > 14) {
 773                 pr_info("%s: wrong pstrsp ril=%d\n", ch->is->name, ril);
 774                 ril = 15;
 775         }
 776         switch (ch->is->buf[1]) {
 777         case 0:
 778                 rim = 0;
 779                 break;
 780         case 0x20:
 781                 rim = 2;
 782                 break;
 783         case 0x40:
 784                 rim = 3;
 785                 break;
 786         case 0x41:
 787                 rim = 4;
 788                 break;
 789         case 0x51:
 790                 rim = 5;
 791                 break;
 792         case 0x61:
 793                 rim = 6;
 794                 break;
 795         case 0x71:
 796                 rim = 7;
 797                 break;
 798         case 0x82:
 799                 rim = 8;
 800                 break;
 801         case 0x92:
 802                 rim = 9;
 803                 break;
 804         case 0xa2:
 805                 rim = 10;
 806                 break;
 807         default:
 808                 rim = 1;
 809                 break;
 810         }
 811         sprintf(ch->conmsg, "%s %s", dmril[ril], dmrim[rim]);
 812         pr_debug("%s: pump strsp %s\n", ch->is->name, ch->conmsg);
 813 }
 814
 815 static void
 816 isar_pump_statev_modem(struct isar_ch *ch, u8 devt) {
 817         u8 dps = SET_DPS(ch->dpath);
 818
 819         switch (devt) {
 820         case PSEV_10MS_TIMER:
 821                 pr_debug("%s: pump stev TIMER\n", ch->is->name);
 822                 break;
 823         case PSEV_CON_ON:
 824                 pr_debug("%s: pump stev CONNECT\n", ch->is->name);
 825                 deliver_status(ch, HW_MOD_CONNECT);
 826                 break;
 827         case PSEV_CON_OFF:
 828                 pr_debug("%s: pump stev NO CONNECT\n", ch->is->name);
 829                 send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
 830                 deliver_status(ch, HW_MOD_NOCARR);
 831                 break;
 832         case PSEV_V24_OFF:
 833                 pr_debug("%s: pump stev V24 OFF\n", ch->is->name);
 834                 break;
 835         case PSEV_CTS_ON:
 836                 pr_debug("%s: pump stev CTS ON\n", ch->is->name);
 837                 break;
 838         case PSEV_CTS_OFF:
 839                 pr_debug("%s pump stev CTS OFF\n", ch->is->name);
 840                 break;
 841         case PSEV_DCD_ON:
 842                 pr_debug("%s: pump stev CARRIER ON\n", ch->is->name);
 843                 test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
 844                 send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
 845                 break;
 846         case PSEV_DCD_OFF:
 847                 pr_debug("%s: pump stev CARRIER OFF\n", ch->is->name);
 848                 break;
 849         case PSEV_DSR_ON:
 850                 pr_debug("%s: pump stev DSR ON\n", ch->is->name);
 851                 break;
 852         case PSEV_DSR_OFF:
 853                 pr_debug("%s: pump stev DSR_OFF\n", ch->is->name);
 854                 break;
 855         case PSEV_REM_RET:
 856                 pr_debug("%s: pump stev REMOTE RETRAIN\n", ch->is->name);
 857                 break;
 858         case PSEV_REM_REN:
 859                 pr_debug("%s: pump stev REMOTE RENEGOTIATE\n", ch->is->name);
 860                 break;
 861         case PSEV_GSTN_CLR:
 862                 pr_debug("%s: pump stev GSTN CLEAR\n", ch->is->name);
 863                 break;
 864         default:
 865                 pr_info("u%s: unknown pump stev %x\n", ch->is->name, devt);
 866                 break;
 867         }
 868 }
 869
 870 static void
 871 isar_pump_statev_fax(struct isar_ch *ch, u8 devt) {
 872         u8 dps = SET_DPS(ch->dpath);
 873         u8 p1;
 874
 875         switch (devt) {
 876         case PSEV_10MS_TIMER:
 877                 pr_debug("%s: pump stev TIMER\n", ch->is->name);
 878                 break;
 879         case PSEV_RSP_READY:
 880                 pr_debug("%s: pump stev RSP_READY\n", ch->is->name);
 881                 ch->state = STFAX_READY;
 882                 deliver_status(ch, HW_MOD_READY);
 883 #ifdef AUTOCON
 884                 if (test_bit(BC_FLG_ORIG, &ch->bch.Flags))
 885                         isar_pump_cmd(bch, HW_MOD_FRH, 3);
 886                 else
 887                         isar_pump_cmd(bch, HW_MOD_FTH, 3);
 888 #endif
 889                 break;
 890         case PSEV_LINE_TX_H:
 891                 if (ch->state == STFAX_LINE) {
 892                         pr_debug("%s: pump stev LINE_TX_H\n", ch->is->name);
 893                         ch->state = STFAX_CONT;
 894                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 895                                   PCTRL_CMD_CONT, 0, NULL);
 896                 } else {
 897                         pr_debug("%s: pump stev LINE_TX_H wrong st %x\n",
 898                                  ch->is->name, ch->state);
 899                 }
 900                 break;
 901         case PSEV_LINE_RX_H:
 902                 if (ch->state == STFAX_LINE) {
 903                         pr_debug("%s: pump stev LINE_RX_H\n", ch->is->name);
 904                         ch->state = STFAX_CONT;
 905                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 906                                   PCTRL_CMD_CONT, 0, NULL);
 907                 } else {
 908                         pr_debug("%s: pump stev LINE_RX_H wrong st %x\n",
 909                                  ch->is->name, ch->state);
 910                 }
 911                 break;
 912         case PSEV_LINE_TX_B:
 913                 if (ch->state == STFAX_LINE) {
 914                         pr_debug("%s: pump stev LINE_TX_B\n", ch->is->name);
 915                         ch->state = STFAX_CONT;
 916                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 917                                   PCTRL_CMD_CONT, 0, NULL);
 918                 } else {
 919                         pr_debug("%s: pump stev LINE_TX_B wrong st %x\n",
 920                                  ch->is->name, ch->state);
 921                 }
 922                 break;
 923         case PSEV_LINE_RX_B:
 924                 if (ch->state == STFAX_LINE) {
 925                         pr_debug("%s: pump stev LINE_RX_B\n", ch->is->name);
 926                         ch->state = STFAX_CONT;
 927                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 928                                   PCTRL_CMD_CONT, 0, NULL);
 929                 } else {
 930                         pr_debug("%s: pump stev LINE_RX_B wrong st %x\n",
 931                                  ch->is->name, ch->state);
 932                 }
 933                 break;
 934         case PSEV_RSP_CONN:
 935                 if (ch->state == STFAX_CONT) {
 936                         pr_debug("%s: pump stev RSP_CONN\n", ch->is->name);
 937                         ch->state = STFAX_ACTIV;
 938                         test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
 939                         send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
 940                         if (ch->cmd == PCTRL_CMD_FTH) {
 941                                 int delay = (ch->mod == 3) ? 1000 : 200;
 942                                 /* 1s (200 ms) Flags before data */
 943                                 if (test_and_set_bit(FLG_FTI_RUN,
 944                                                      &ch->bch.Flags))
 945                                         del_timer(&ch->ftimer);
 946                                 ch->ftimer.expires =
 947                                         jiffies + ((delay * HZ) / 1000);
 948                                 test_and_set_bit(FLG_LL_CONN,
 949                                                  &ch->bch.Flags);
 950                                 add_timer(&ch->ftimer);
 951                         } else {
 952                                 deliver_status(ch, HW_MOD_CONNECT);
 953                         }
 954                 } else {
 955                         pr_debug("%s: pump stev RSP_CONN wrong st %x\n",
 956                                  ch->is->name, ch->state);
 957                 }
 958                 break;
 959         case PSEV_FLAGS_DET:
 960                 pr_debug("%s: pump stev FLAGS_DET\n", ch->is->name);
 961                 break;
 962         case PSEV_RSP_DISC:
 963                 pr_debug("%s: pump stev RSP_DISC state(%d)\n",
 964                          ch->is->name, ch->state);
 965                 if (ch->state == STFAX_ESCAPE) {
 966                         p1 = 5;
 967                         switch (ch->newcmd) {
 968                         case 0:
 969                                 ch->state = STFAX_READY;
 970                                 break;
 971                         case PCTRL_CMD_FTM:
 972                                 p1 = 2;
 973                         case PCTRL_CMD_FTH:
 974                                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 975                                           PCTRL_CMD_SILON, 1, &p1);
 976                                 ch->state = STFAX_SILDET;
 977                                 break;
 978                         case PCTRL_CMD_FRH:
 979                         case PCTRL_CMD_FRM:
 980                                 ch->mod = ch->newmod;
 981                                 p1 = ch->newmod;
 982                                 ch->newmod = 0;
 983                                 ch->cmd = ch->newcmd;
 984                                 ch->newcmd = 0;
 985                                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 986                                           ch->cmd, 1, &p1);
 987                                 ch->state = STFAX_LINE;
 988                                 ch->try_mod = 3;
 989                                 break;
 990                         default:
 991                                 pr_debug("%s: RSP_DISC unknown newcmd %x\n",
 992                                          ch->is->name, ch->newcmd);
 993                                 break;
 994                         }
 995                 } else if (ch->state == STFAX_ACTIV) {
 996                         if (test_and_clear_bit(FLG_LL_OK, &ch->bch.Flags))
 997                                 deliver_status(ch, HW_MOD_OK);
 998                         else if (ch->cmd == PCTRL_CMD_FRM)
 999                                 deliver_status(ch, HW_MOD_NOCARR);
1000                         else
1001                                 deliver_status(ch, HW_MOD_FCERROR);
1002                         ch->state = STFAX_READY;
1003                 } else if (ch->state != STFAX_SILDET) {
1004                         /* ignore in STFAX_SILDET */
1005                         ch->state = STFAX_READY;
1006                         deliver_status(ch, HW_MOD_FCERROR);
1007                 }
1008                 break;
1009         case PSEV_RSP_SILDET:
1010                 pr_debug("%s: pump stev RSP_SILDET\n", ch->is->name);
1011                 if (ch->state == STFAX_SILDET) {
1012                         ch->mod = ch->newmod;
1013                         p1 = ch->newmod;
1014                         ch->newmod = 0;
1015                         ch->cmd = ch->newcmd;
1016                         ch->newcmd = 0;
1017                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
1018                                   ch->cmd, 1, &p1);
1019                         ch->state = STFAX_LINE;
1020                         ch->try_mod = 3;
1021                 }
1022                 break;
1023         case PSEV_RSP_SILOFF:
1024                 pr_debug("%s: pump stev RSP_SILOFF\n", ch->is->name);
1025                 break;
1026         case PSEV_RSP_FCERR:
1027                 if (ch->state == STFAX_LINE) {
1028                         pr_debug("%s: pump stev RSP_FCERR try %d\n",
1029                                  ch->is->name, ch->try_mod);
1030                         if (ch->try_mod--) {
1031                                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
1032                                           ch->cmd, 1, &ch->mod);
1033                                 break;
1034                         }
1035                 }
1036                 pr_debug("%s: pump stev RSP_FCERR\n", ch->is->name);
1037                 ch->state = STFAX_ESCAPE;
1038                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
1039                           0, NULL);
1040                 deliver_status(ch, HW_MOD_FCERROR);
1041                 break;
1042         default:
1043                 break;
1044         }
1045 }
1046
1047 void
1048 mISDNisar_irq(struct isar_hw *isar)
1049 {
1050         struct isar_ch *ch;
1051
1052         get_irq_infos(isar);
1053         switch (isar->iis & ISAR_IIS_MSCMSD) {
1054         case ISAR_IIS_RDATA:
1055                 ch = sel_bch_isar(isar, isar->iis >> 6);
1056                 if (ch)
1057                         isar_rcv_frame(ch);
1058                 else {
1059                         pr_debug("%s: ISAR spurious IIS_RDATA %x/%x/%x\n",
1060                                  isar->name, isar->iis, isar->cmsb,
1061                                  isar->clsb);
1062                         isar->write_reg(isar->hw, ISAR_IIA, 0);
1063                 }
1064                 break;
1065         case ISAR_IIS_GSTEV:
1066                 isar->write_reg(isar->hw, ISAR_IIA, 0);
1067                 isar->bstat |= isar->cmsb;
1068                 check_send(isar, isar->cmsb);
1069                 break;
1070         case ISAR_IIS_BSTEV:
1071 #ifdef ERROR_STATISTIC
1072                 ch = sel_bch_isar(isar, isar->iis >> 6);
1073                 if (ch) {
1074                         if (isar->cmsb == BSTEV_TBO)
1075                                 ch->bch.err_tx++;
1076                         if (isar->cmsb == BSTEV_RBO)
1077                                 ch->bch.err_rdo++;
1078                 }
1079 #endif
1080                 pr_debug("%s: Buffer STEV dpath%d msb(%x)\n",
1081                          isar->name, isar->iis >> 6, isar->cmsb);
1082                 isar->write_reg(isar->hw, ISAR_IIA, 0);
1083                 break;
1084         case ISAR_IIS_PSTEV:
1085                 ch = sel_bch_isar(isar, isar->iis >> 6);
1086                 if (ch) {
1087                         rcv_mbox(isar, NULL);
1088                         if (ch->bch.state == ISDN_P_B_MODEM_ASYNC)
1089                                 isar_pump_statev_modem(ch, isar->cmsb);
1090                         else if (ch->bch.state == ISDN_P_B_T30_FAX)
1091                                 isar_pump_statev_fax(ch, isar->cmsb);
1092                         else if (ch->bch.state == ISDN_P_B_RAW) {
1093                                 int     tt;
1094                                 tt = isar->cmsb | 0x30;
1095                                 if (tt == 0x3e)
1096                                         tt = '*';
1097                                 else if (tt == 0x3f)
1098                                         tt = '#';
1099                                 else if (tt > '9')
1100                                         tt += 7;
1101                                 tt |= DTMF_TONE_VAL;
1102                                 _queue_data(&ch->bch.ch, PH_CONTROL_IND,
1103                                             MISDN_ID_ANY, sizeof(tt), &tt,
1104                                             GFP_ATOMIC);
1105                         } else
1106                                 pr_debug("%s: ISAR IIS_PSTEV pm %d sta %x\n",
1107                                          isar->name, ch->bch.state,
1108                                          isar->cmsb);
1109                 } else {
1110                         pr_debug("%s: ISAR spurious IIS_PSTEV %x/%x/%x\n",
1111                                  isar->name, isar->iis, isar->cmsb,
1112                                  isar->clsb);
1113                         isar->write_reg(isar->hw, ISAR_IIA, 0);
1114                 }
1115                 break;
1116         case ISAR_IIS_PSTRSP:
1117                 ch = sel_bch_isar(isar, isar->iis >> 6);
1118                 if (ch) {
1119                         rcv_mbox(isar, NULL);
1120                         isar_pump_status_rsp(ch);
1121                 } else {
1122                         pr_debug("%s: ISAR spurious IIS_PSTRSP %x/%x/%x\n",
1123                                  isar->name, isar->iis, isar->cmsb,
1124                                  isar->clsb);
1125                         isar->write_reg(isar->hw, ISAR_IIA, 0);
1126                 }
1127                 break;
1128         case ISAR_IIS_DIAG:
1129         case ISAR_IIS_BSTRSP:
1130         case ISAR_IIS_IOM2RSP:
1131                 rcv_mbox(isar, NULL);
1132                 break;
1133         case ISAR_IIS_INVMSG:
1134                 rcv_mbox(isar, NULL);
1135                 pr_debug("%s: invalid msg his:%x\n", isar->name, isar->cmsb);
1136                 break;
1137         default:
1138                 rcv_mbox(isar, NULL);
1139                 pr_debug("%s: unhandled msg iis(%x) ctrl(%x/%x)\n",
1140                          isar->name, isar->iis, isar->cmsb, isar->clsb);
1141                 break;
1142         }
1143 }
1144 EXPORT_SYMBOL(mISDNisar_irq);
1145
1146 static void
1147 ftimer_handler(unsigned long data)
1148 {
1149         struct isar_ch *ch = (struct isar_ch *)data;
1150
1151         pr_debug("%s: ftimer flags %lx\n", ch->is->name, ch->bch.Flags);
1152         test_and_clear_bit(FLG_FTI_RUN, &ch->bch.Flags);
1153         if (test_and_clear_bit(FLG_LL_CONN, &ch->bch.Flags))
1154                 deliver_status(ch, HW_MOD_CONNECT);
1155 }
1156
1157 static void
1158 setup_pump(struct isar_ch *ch) {
1159         u8 dps = SET_DPS(ch->dpath);
1160         u8 ctrl, param[6];
1161
1162         switch (ch->bch.state) {
1163         case ISDN_P_NONE:
1164         case ISDN_P_B_RAW:
1165         case ISDN_P_B_HDLC:
1166                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, PMOD_BYPASS, 0, NULL);
1167                 break;
1168         case ISDN_P_B_L2DTMF:
1169                 if (test_bit(FLG_DTMFSEND, &ch->bch.Flags)) {
1170                         param[0] = 5; /* TOA 5 db */
1171                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
1172                                   PMOD_DTMF_TRANS, 1, param);
1173                 } else {
1174                         param[0] = 40; /* REL -46 dbm */
1175                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
1176                                   PMOD_DTMF, 1, param);
1177                 }
1178         case ISDN_P_B_MODEM_ASYNC:
1179                 ctrl = PMOD_DATAMODEM;
1180                 if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
1181                         ctrl |= PCTRL_ORIG;
1182                         param[5] = PV32P6_CTN;
1183                 } else {
1184                         param[5] = PV32P6_ATN;
1185                 }
1186                 param[0] = 6; /* 6 db */
1187                 param[1] = PV32P2_V23R | PV32P2_V22A | PV32P2_V22B |
1188                         PV32P2_V22C | PV32P2_V21 | PV32P2_BEL;
1189                 param[2] = PV32P3_AMOD | PV32P3_V32B | PV32P3_V23B;
1190                 param[3] = PV32P4_UT144;
1191                 param[4] = PV32P5_UT144;
1192                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 6, param);
1193                 break;
1194         case ISDN_P_B_T30_FAX:
1195                 ctrl = PMOD_FAX;
1196                 if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
1197                         ctrl |= PCTRL_ORIG;
1198                         param[1] = PFAXP2_CTN;
1199                 } else {
1200                         param[1] = PFAXP2_ATN;
1201                 }
1202                 param[0] = 6; /* 6 db */
1203                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 2, param);
1204                 ch->state = STFAX_NULL;
1205                 ch->newcmd = 0;
1206                 ch->newmod = 0;
1207                 test_and_set_bit(FLG_FTI_RUN, &ch->bch.Flags);
1208                 break;
1209         }
1210         udelay(1000);
1211         send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
1212         udelay(1000);
1213 }
1214
1215 static void
1216 setup_sart(struct isar_ch *ch) {
1217         u8 dps = SET_DPS(ch->dpath);
1218         u8 ctrl, param[2] = {0, 0};
1219
1220         switch (ch->bch.state) {
1221         case ISDN_P_NONE:
1222                 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_DISABLE,
1223                           0, NULL);
1224                 break;
1225         case ISDN_P_B_RAW:
1226         case ISDN_P_B_L2DTMF:
1227                 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_BINARY,
1228                           2, param);
1229                 break;
1230         case ISDN_P_B_HDLC:
1231         case ISDN_P_B_T30_FAX:
1232                 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_HDLC,
1233                           1, param);
1234                 break;
1235         case ISDN_P_B_MODEM_ASYNC:
1236                 ctrl = SMODE_V14 | SCTRL_HDMC_BOTH;
1237                 param[0] = S_P1_CHS_8;
1238                 param[1] = S_P2_BFT_DEF;
1239                 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, ctrl, 2, param);
1240                 break;
1241         }
1242         udelay(1000);
1243         send_mbox(ch->is, dps | ISAR_HIS_BSTREQ, 0, 0, NULL);
1244         udelay(1000);
1245 }
1246
1247 static void
1248 setup_iom2(struct isar_ch *ch) {
1249         u8 dps = SET_DPS(ch->dpath);
1250         u8 cmsb = IOM_CTRL_ENA, msg[5] = {IOM_P1_TXD, 0, 0, 0, 0};
1251
1252         if (ch->bch.nr == 2) {
1253                 msg[1] = 1;
1254                 msg[3] = 1;
1255         }
1256         switch (ch->bch.state) {
1257         case ISDN_P_NONE:
1258                 cmsb = 0;
1259                 /* dummy slot */
1260                 msg[1] = ch->dpath + 2;
1261                 msg[3] = ch->dpath + 2;
1262                 break;
1263         case ISDN_P_B_RAW:
1264         case ISDN_P_B_HDLC:
1265                 break;
1266         case ISDN_P_B_MODEM_ASYNC:
1267         case ISDN_P_B_T30_FAX:
1268                 cmsb |= IOM_CTRL_RCV;
1269         case ISDN_P_B_L2DTMF:
1270                 if (test_bit(FLG_DTMFSEND, &ch->bch.Flags))
1271                         cmsb |= IOM_CTRL_RCV;
1272                 cmsb |= IOM_CTRL_ALAW;
1273                 break;
1274         }
1275         send_mbox(ch->is, dps | ISAR_HIS_IOM2CFG, cmsb, 5, msg);
1276         udelay(1000);
1277         send_mbox(ch->is, dps | ISAR_HIS_IOM2REQ, 0, 0, NULL);
1278         udelay(1000);
1279 }
1280
1281 static int
1282 modeisar(struct isar_ch *ch, u32 bprotocol)
1283 {
1284         /* Here we are selecting the best datapath for requested protocol */
1285         if (ch->bch.state == ISDN_P_NONE) { /* New Setup */
1286                 switch (bprotocol) {
1287                 case ISDN_P_NONE: /* init */
1288                         if (!ch->dpath)
1289                                 /* no init for dpath 0 */
1290                                 return 0;
1291                         test_and_clear_bit(FLG_HDLC, &ch->bch.Flags);
1292                         test_and_clear_bit(FLG_TRANSPARENT, &ch->bch.Flags);
1293                         break;
1294                 case ISDN_P_B_RAW:
1295                 case ISDN_P_B_HDLC:
1296                         /* best is datapath 2 */
1297                         if (!test_and_set_bit(ISAR_DP2_USE, &ch->is->Flags))
1298                                 ch->dpath = 2;
1299                         else if (!test_and_set_bit(ISAR_DP1_USE,
1300                                                    &ch->is->Flags))
1301                                 ch->dpath = 1;
1302                         else {
1303                                 pr_info("modeisar both pathes in use\n");
1304                                 return -EBUSY;
1305                         }
1306                         if (bprotocol == ISDN_P_B_HDLC)
1307                                 test_and_set_bit(FLG_HDLC, &ch->bch.Flags);
1308                         else
1309                                 test_and_set_bit(FLG_TRANSPARENT,
1310                                                  &ch->bch.Flags);
1311                         break;
1312                 case ISDN_P_B_MODEM_ASYNC:
1313                 case ISDN_P_B_T30_FAX:
1314                 case ISDN_P_B_L2DTMF:
1315                         /* only datapath 1 */
1316                         if (!test_and_set_bit(ISAR_DP1_USE, &ch->is->Flags))
1317                                 ch->dpath = 1;
1318                         else {
1319                                 pr_info("%s: ISAR modeisar analog functions"
1320                                         "only with DP1\n", ch->is->name);
1321                                 return -EBUSY;
1322                         }
1323                         break;
1324                 default:
1325                         pr_info("%s: protocol not known %x\n", ch->is->name,
1326                                 bprotocol);
1327                         return -ENOPROTOOPT;
1328                 }
1329         }
1330         pr_debug("%s: ISAR ch%d dp%d protocol %x->%x\n", ch->is->name,
1331                  ch->bch.nr, ch->dpath, ch->bch.state, bprotocol);
1332         ch->bch.state = bprotocol;
1333         setup_pump(ch);
1334         setup_iom2(ch);
1335         setup_sart(ch);
1336         if (ch->bch.state == ISDN_P_NONE) {
1337                 /* Clear resources */
1338                 if (ch->dpath == 1)
1339                         test_and_clear_bit(ISAR_DP1_USE, &ch->is->Flags);
1340                 else if (ch->dpath == 2)
1341                         test_and_clear_bit(ISAR_DP2_USE, &ch->is->Flags);
1342                 ch->dpath = 0;
1343                 ch->is->ctrl(ch->is->hw, HW_DEACT_IND, ch->bch.nr);
1344         } else
1345                 ch->is->ctrl(ch->is->hw, HW_ACTIVATE_IND, ch->bch.nr);
1346         return 0;
1347 }
1348
1349 static void
1350 isar_pump_cmd(struct isar_ch *ch, u32 cmd, u8 para)
1351 {
1352         u8 dps = SET_DPS(ch->dpath);
1353         u8 ctrl = 0, nom = 0, p1 = 0;
1354
1355         pr_debug("%s: isar_pump_cmd %x/%x state(%x)\n",
1356                  ch->is->name, cmd, para, ch->bch.state);
1357         switch (cmd) {
1358         case HW_MOD_FTM:
1359                 if (ch->state == STFAX_READY) {
1360                         p1 = para;
1361                         ctrl = PCTRL_CMD_FTM;
1362                         nom = 1;
1363                         ch->state = STFAX_LINE;
1364                         ch->cmd = ctrl;
1365                         ch->mod = para;
1366                         ch->newmod = 0;
1367                         ch->newcmd = 0;
1368                         ch->try_mod = 3;
1369                 } else if ((ch->state == STFAX_ACTIV) &&
1370                            (ch->cmd == PCTRL_CMD_FTM) && (ch->mod == para))
1371                         deliver_status(ch, HW_MOD_CONNECT);
1372                 else {
1373                         ch->newmod = para;
1374                         ch->newcmd = PCTRL_CMD_FTM;
1375                         nom = 0;
1376                         ctrl = PCTRL_CMD_ESC;
1377                         ch->state = STFAX_ESCAPE;
1378                 }
1379                 break;
1380         case HW_MOD_FTH:
1381                 if (ch->state == STFAX_READY) {
1382                         p1 = para;
1383                         ctrl = PCTRL_CMD_FTH;
1384                         nom = 1;
1385                         ch->state = STFAX_LINE;
1386                         ch->cmd = ctrl;
1387                         ch->mod = para;
1388                         ch->newmod = 0;
1389                         ch->newcmd = 0;
1390                         ch->try_mod = 3;
1391                 } else if ((ch->state == STFAX_ACTIV) &&
1392                            (ch->cmd == PCTRL_CMD_FTH) && (ch->mod == para))
1393                         deliver_status(ch, HW_MOD_CONNECT);
1394                 else {
1395                         ch->newmod = para;
1396                         ch->newcmd = PCTRL_CMD_FTH;
1397                         nom = 0;
1398                         ctrl = PCTRL_CMD_ESC;
1399                         ch->state = STFAX_ESCAPE;
1400                 }
1401                 break;
1402         case HW_MOD_FRM:
1403                 if (ch->state == STFAX_READY) {
1404                         p1 = para;
1405                         ctrl = PCTRL_CMD_FRM;
1406                         nom = 1;
1407                         ch->state = STFAX_LINE;
1408                         ch->cmd = ctrl;
1409                         ch->mod = para;
1410                         ch->newmod = 0;
1411                         ch->newcmd = 0;
1412                         ch->try_mod = 3;
1413                 } else if ((ch->state == STFAX_ACTIV) &&
1414                            (ch->cmd == PCTRL_CMD_FRM) && (ch->mod == para))
1415                         deliver_status(ch, HW_MOD_CONNECT);
1416                 else {
1417                         ch->newmod = para;
1418                         ch->newcmd = PCTRL_CMD_FRM;
1419                         nom = 0;
1420                         ctrl = PCTRL_CMD_ESC;
1421                         ch->state = STFAX_ESCAPE;
1422                 }
1423                 break;
1424         case HW_MOD_FRH:
1425                 if (ch->state == STFAX_READY) {
1426                         p1 = para;
1427                         ctrl = PCTRL_CMD_FRH;
1428                         nom = 1;
1429                         ch->state = STFAX_LINE;
1430                         ch->cmd = ctrl;
1431                         ch->mod = para;
1432                         ch->newmod = 0;
1433                         ch->newcmd = 0;
1434                         ch->try_mod = 3;
1435                 } else if ((ch->state == STFAX_ACTIV) &&
1436                            (ch->cmd == PCTRL_CMD_FRH) && (ch->mod == para))
1437                         deliver_status(ch, HW_MOD_CONNECT);
1438                 else {
1439                         ch->newmod = para;
1440                         ch->newcmd = PCTRL_CMD_FRH;
1441                         nom = 0;
1442                         ctrl = PCTRL_CMD_ESC;
1443                         ch->state = STFAX_ESCAPE;
1444                 }
1445                 break;
1446         case PCTRL_CMD_TDTMF:
1447                 p1 = para;
1448                 nom = 1;
1449                 ctrl = PCTRL_CMD_TDTMF;
1450                 break;
1451         }
1452         if (ctrl)
1453                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, ctrl, nom, &p1);
1454 }
1455
1456 static void
1457 isar_setup(struct isar_hw *isar)
1458 {
1459         u8 msg;
1460         int i;
1461
1462         /* Dpath 1, 2 */
1463         msg = 61;
1464         for (i = 0; i < 2; i++) {
1465                 /* Buffer Config */
1466                 send_mbox(isar, (i ? ISAR_HIS_DPS2 : ISAR_HIS_DPS1) |
1467                           ISAR_HIS_P12CFG, 4, 1, &msg);
1468                 isar->ch[i].mml = msg;
1469                 isar->ch[i].bch.state = 0;
1470                 isar->ch[i].dpath = i + 1;
1471                 modeisar(&isar->ch[i], ISDN_P_NONE);
1472         }
1473 }
1474
1475 static int
1476 isar_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
1477 {
1478         struct bchannel *bch = container_of(ch, struct bchannel, ch);
1479         struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
1480         int ret = -EINVAL;
1481         struct mISDNhead *hh = mISDN_HEAD_P(skb);
1482         u32 id, *val;
1483         u_long flags;
1484
1485         switch (hh->prim) {
1486         case PH_DATA_REQ:
1487                 spin_lock_irqsave(ich->is->hwlock, flags);
1488                 ret = bchannel_senddata(bch, skb);
1489                 if (ret > 0) { /* direct TX */
1490                         id = hh->id; /* skb can be freed */
1491                         ret = 0;
1492                         isar_fill_fifo(ich);
1493                         spin_unlock_irqrestore(ich->is->hwlock, flags);
1494                         if (!test_bit(FLG_TRANSPARENT, &bch->Flags))
1495                                 queue_ch_frame(ch, PH_DATA_CNF, id, NULL);
1496                 } else
1497                         spin_unlock_irqrestore(ich->is->hwlock, flags);
1498                 return ret;
1499         case PH_ACTIVATE_REQ:
1500                 spin_lock_irqsave(ich->is->hwlock, flags);
1501                 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
1502                         ret = modeisar(ich, ch->protocol);
1503                 else
1504                         ret = 0;
1505                 spin_unlock_irqrestore(ich->is->hwlock, flags);
1506                 if (!ret)
1507                         _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
1508                                     NULL, GFP_KERNEL);
1509                 break;
1510         case PH_DEACTIVATE_REQ:
1511                 spin_lock_irqsave(ich->is->hwlock, flags);
1512                 mISDN_clear_bchannel(bch);
1513                 modeisar(ich, ISDN_P_NONE);
1514                 spin_unlock_irqrestore(ich->is->hwlock, flags);
1515                 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
1516                             NULL, GFP_KERNEL);
1517                 ret = 0;
1518                 break;
1519         case PH_CONTROL_REQ:
1520                 val = (u32 *)skb->data;
1521                 pr_debug("%s: PH_CONTROL | REQUEST %x/%x\n", ich->is->name,
1522                          hh->id, *val);
1523                 if ((hh->id == 0) && ((*val & ~DTMF_TONE_MASK) ==
1524                                       DTMF_TONE_VAL)) {
1525                         if (bch->state == ISDN_P_B_L2DTMF) {
1526                                 char tt = *val & DTMF_TONE_MASK;
1527
1528                                 if (tt == '*')
1529                                         tt = 0x1e;
1530                                 else if (tt == '#')
1531                                         tt = 0x1f;
1532                                 else if (tt > '9')
1533                                         tt -= 7;
1534                                 tt &= 0x1f;
1535                                 spin_lock_irqsave(ich->is->hwlock, flags);
1536                                 isar_pump_cmd(ich, PCTRL_CMD_TDTMF, tt);
1537                                 spin_unlock_irqrestore(ich->is->hwlock, flags);
1538                         } else {
1539                                 pr_info("%s: DTMF send wrong protocol %x\n",
1540                                         __func__, bch->state);
1541                                 return -EINVAL;
1542                         }
1543                 } else if ((hh->id == HW_MOD_FRM) || (hh->id == HW_MOD_FRH) ||
1544                            (hh->id == HW_MOD_FTM) || (hh->id == HW_MOD_FTH)) {
1545                         for (id = 0; id < FAXMODCNT; id++)
1546                                 if (faxmodulation[id] == *val)
1547                                         break;
1548                         if ((FAXMODCNT > id) &&
1549                             test_bit(FLG_INITIALIZED, &bch->Flags)) {
1550                                 pr_debug("%s: isar: new mod\n", ich->is->name);
1551                                 isar_pump_cmd(ich, hh->id, *val);
1552                                 ret = 0;
1553                         } else {
1554                                 pr_info("%s: wrong modulation\n",
1555                                         ich->is->name);
1556                                 ret = -EINVAL;
1557                         }
1558                 } else if (hh->id == HW_MOD_LASTDATA)
1559                         test_and_set_bit(FLG_DLEETX, &bch->Flags);
1560                 else {
1561                         pr_info("%s: unknown PH_CONTROL_REQ %x\n",
1562                                 ich->is->name, hh->id);
1563                         ret = -EINVAL;
1564                 }
1565         default:
1566                 pr_info("%s: %s unknown prim(%x,%x)\n",
1567                         ich->is->name, __func__, hh->prim, hh->id);
1568                 ret = -EINVAL;
1569         }
1570         if (!ret)
1571                 dev_kfree_skb(skb);
1572         return ret;
1573 }
1574
1575 static int
1576 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
1577 {
1578         int     ret = 0;
1579
1580         switch (cq->op) {
1581         case MISDN_CTRL_GETOP:
1582                 cq->op = 0;
1583                 break;
1584                 /* Nothing implemented yet */
1585         case MISDN_CTRL_FILL_EMPTY:
1586         default:
1587                 pr_info("%s: unknown Op %x\n", __func__, cq->op);
1588                 ret = -EINVAL;
1589                 break;
1590         }
1591         return ret;
1592 }
1593
1594 static int
1595 isar_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1596 {
1597         struct bchannel *bch = container_of(ch, struct bchannel, ch);
1598         struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
1599         int ret = -EINVAL;
1600         u_long flags;
1601
1602         pr_debug("%s: %s cmd:%x %p\n", ich->is->name, __func__, cmd, arg);
1603         switch (cmd) {
1604         case CLOSE_CHANNEL:
1605                 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1606                 if (test_bit(FLG_ACTIVE, &bch->Flags)) {
1607                         spin_lock_irqsave(ich->is->hwlock, flags);
1608                         mISDN_freebchannel(bch);
1609                         modeisar(ich, ISDN_P_NONE);
1610                         spin_unlock_irqrestore(ich->is->hwlock, flags);
1611                 } else {
1612                         skb_queue_purge(&bch->rqueue);
1613                         bch->rcount = 0;
1614                 }
1615                 ch->protocol = ISDN_P_NONE;
1616                 ch->peer = NULL;
1617                 module_put(ich->is->owner);
1618                 ret = 0;
1619                 break;
1620         case CONTROL_CHANNEL:
1621                 ret = channel_bctrl(bch, arg);
1622                 break;
1623         default:
1624                 pr_info("%s: %s unknown prim(%x)\n",
1625                         ich->is->name, __func__, cmd);
1626         }
1627         return ret;
1628 }
1629
1630 static void
1631 free_isar(struct isar_hw *isar)
1632 {
1633         modeisar(&isar->ch[0], ISDN_P_NONE);
1634         modeisar(&isar->ch[1], ISDN_P_NONE);
1635         del_timer(&isar->ch[0].ftimer);
1636         del_timer(&isar->ch[1].ftimer);
1637         test_and_clear_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
1638         test_and_clear_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
1639 }
1640
1641 static int
1642 init_isar(struct isar_hw *isar)
1643 {
1644         int     cnt = 3;
1645
1646         while (cnt--) {
1647                 isar->version = ISARVersion(isar);
1648                 if (isar->ch[0].bch.debug & DEBUG_HW)
1649                         pr_notice("%s: Testing version %d (%d time)\n",
1650                                   isar->name, isar->version, 3 - cnt);
1651                 if (isar->version == 1)
1652                         break;
1653                 isar->ctrl(isar->hw, HW_RESET_REQ, 0);
1654         }
1655         if (isar->version != 1)
1656                 return -EINVAL;
1657         isar->ch[0].ftimer.function = &ftimer_handler;
1658         isar->ch[0].ftimer.data = (long)&isar->ch[0];
1659         init_timer(&isar->ch[0].ftimer);
1660         test_and_set_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
1661         isar->ch[1].ftimer.function = &ftimer_handler;
1662         isar->ch[1].ftimer.data = (long)&isar->ch[1];
1663         init_timer(&isar->ch[1].ftimer);
1664         test_and_set_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
1665         return 0;
1666 }
1667
1668 static int
1669 isar_open(struct isar_hw *isar, struct channel_req *rq)
1670 {
1671         struct bchannel         *bch;
1672
1673         if (rq->adr.channel > 2)
1674                 return -EINVAL;
1675         if (rq->protocol == ISDN_P_NONE)
1676                 return -EINVAL;
1677         bch = &isar->ch[rq->adr.channel - 1].bch;
1678         if (test_and_set_bit(FLG_OPEN, &bch->Flags))
1679                 return -EBUSY; /* b-channel can be only open once */
1680         test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
1681         bch->ch.protocol = rq->protocol;
1682         rq->ch = &bch->ch;
1683         return 0;
1684 }
1685
1686 u32
1687 mISDNisar_init(struct isar_hw *isar, void *hw)
1688 {
1689         u32 ret, i;
1690
1691         isar->hw = hw;
1692         for (i = 0; i < 2; i++) {
1693                 isar->ch[i].bch.nr = i + 1;
1694                 mISDN_initbchannel(&isar->ch[i].bch, MAX_DATA_MEM);
1695                 isar->ch[i].bch.ch.nr = i + 1;
1696                 isar->ch[i].bch.ch.send = &isar_l2l1;
1697                 isar->ch[i].bch.ch.ctrl = isar_bctrl;
1698                 isar->ch[i].bch.hw = hw;
1699                 isar->ch[i].is = isar;
1700         }
1701
1702         isar->init = &init_isar;
1703         isar->release = &free_isar;
1704         isar->firmware = &load_firmware;
1705         isar->open = &isar_open;
1706
1707         ret =   (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1708                 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)) |
1709                 (1 << (ISDN_P_B_L2DTMF & ISDN_P_B_MASK)) |
1710                 (1 << (ISDN_P_B_MODEM_ASYNC & ISDN_P_B_MASK)) |
1711                 (1 << (ISDN_P_B_T30_FAX & ISDN_P_B_MASK));
1712
1713         return ret;
1714 }
1715 EXPORT_SYMBOL(mISDNisar_init);
1716
1717 static int __init isar_mod_init(void)
1718 {
1719         pr_notice("mISDN: ISAR driver Rev. %s\n", ISAR_REV);
1720         return 0;
1721 }
1722
1723 static void __exit isar_mod_cleanup(void)
1724 {
1725         pr_notice("mISDN: ISAR module unloaded\n");
1726 }
1727 module_init(isar_mod_init);
1728 module_exit(isar_mod_cleanup);