kernel/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         int     maxlen;
 426
 427         if (!ch->is->clsb) {
 428                 pr_debug("%s; ISAR zero len frame\n", ch->is->name);
 429                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 430                 return;
 431         }
 432         if (test_bit(FLG_RX_OFF, &ch->bch.Flags)) {
 433                 ch->bch.dropcnt += ch->is->clsb;
 434                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 435                 return;
 436         }
 437         switch (ch->bch.state) {
 438         case ISDN_P_NONE:
 439                 pr_debug("%s: ISAR protocol 0 spurious IIS_RDATA %x/%x/%x\n",
 440                          ch->is->name, ch->is->iis, ch->is->cmsb, ch->is->clsb);
 441                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 442                 break;
 443         case ISDN_P_B_RAW:
 444         case ISDN_P_B_L2DTMF:
 445         case ISDN_P_B_MODEM_ASYNC:
 446                 maxlen = bchannel_get_rxbuf(&ch->bch, ch->is->clsb);
 447                 if (maxlen < 0) {
 448                         pr_warning("%s.B%d: No bufferspace for %d bytes\n",
 449                                    ch->is->name, ch->bch.nr, ch->is->clsb);
 450                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 451                         break;
 452                 }
 453                 rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
 454                 recv_Bchannel(&ch->bch, 0, false);
 455                 break;
 456         case ISDN_P_B_HDLC:
 457                 maxlen = bchannel_get_rxbuf(&ch->bch, ch->is->clsb);
 458                 if (maxlen < 0) {
 459                         pr_warning("%s.B%d: No bufferspace for %d bytes\n",
 460                                    ch->is->name, ch->bch.nr, ch->is->clsb);
 461                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 462                         break;
 463                 }
 464                 if (ch->is->cmsb & HDLC_ERROR) {
 465                         pr_debug("%s: ISAR frame error %x len %d\n",
 466                                  ch->is->name, ch->is->cmsb, ch->is->clsb);
 467 #ifdef ERROR_STATISTIC
 468                         if (ch->is->cmsb & HDLC_ERR_RER)
 469                                 ch->bch.err_inv++;
 470                         if (ch->is->cmsb & HDLC_ERR_CER)
 471                                 ch->bch.err_crc++;
 472 #endif
 473                         skb_trim(ch->bch.rx_skb, 0);
 474                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 475                         break;
 476                 }
 477                 if (ch->is->cmsb & HDLC_FSD)
 478                         skb_trim(ch->bch.rx_skb, 0);
 479                 ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
 480                 rcv_mbox(ch->is, ptr);
 481                 if (ch->is->cmsb & HDLC_FED) {
 482                         if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
 483                                 pr_debug("%s: ISAR frame to short %d\n",
 484                                          ch->is->name, ch->bch.rx_skb->len);
 485                                 skb_trim(ch->bch.rx_skb, 0);
 486                                 break;
 487                         }
 488                         skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
 489                         recv_Bchannel(&ch->bch, 0, false);
 490                 }
 491                 break;
 492         case ISDN_P_B_T30_FAX:
 493                 if (ch->state != STFAX_ACTIV) {
 494                         pr_debug("%s: isar_rcv_frame: not ACTIV\n",
 495                                  ch->is->name);
 496                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 497                         if (ch->bch.rx_skb)
 498                                 skb_trim(ch->bch.rx_skb, 0);
 499                         break;
 500                 }
 501                 if (!ch->bch.rx_skb) {
 502                         ch->bch.rx_skb = mI_alloc_skb(ch->bch.maxlen,
 503                                                       GFP_ATOMIC);
 504                         if (unlikely(!ch->bch.rx_skb)) {
 505                                 pr_info("%s: B receive out of memory\n",
 506                                         __func__);
 507                                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 508                                 break;
 509                         }
 510                 }
 511                 if (ch->cmd == PCTRL_CMD_FRM) {
 512                         rcv_mbox(ch->is, skb_put(ch->bch.rx_skb, ch->is->clsb));
 513                         pr_debug("%s: isar_rcv_frame: %d\n",
 514                                  ch->is->name, ch->bch.rx_skb->len);
 515                         if (ch->is->cmsb & SART_NMD) { /* ABORT */
 516                                 pr_debug("%s: isar_rcv_frame: no more data\n",
 517                                          ch->is->name);
 518                                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 519                                 send_mbox(ch->is, SET_DPS(ch->dpath) |
 520                                           ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
 521                                           0, NULL);
 522                                 ch->state = STFAX_ESCAPE;
 523                                 /* set_skb_flag(skb, DF_NOMOREDATA); */
 524                         }
 525                         recv_Bchannel(&ch->bch, 0, false);
 526                         if (ch->is->cmsb & SART_NMD)
 527                                 deliver_status(ch, HW_MOD_NOCARR);
 528                         break;
 529                 }
 530                 if (ch->cmd != PCTRL_CMD_FRH) {
 531                         pr_debug("%s: isar_rcv_frame: unknown fax mode %x\n",
 532                                  ch->is->name, ch->cmd);
 533                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 534                         if (ch->bch.rx_skb)
 535                                 skb_trim(ch->bch.rx_skb, 0);
 536                         break;
 537                 }
 538                 /* PCTRL_CMD_FRH */
 539                 if ((ch->bch.rx_skb->len + ch->is->clsb) >
 540                     (ch->bch.maxlen + 2)) {
 541                         pr_info("%s: %s incoming packet too large\n",
 542                                 ch->is->name, __func__);
 543                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 544                         skb_trim(ch->bch.rx_skb, 0);
 545                         break;
 546                 }  else if (ch->is->cmsb & HDLC_ERROR) {
 547                         pr_info("%s: ISAR frame error %x len %d\n",
 548                                 ch->is->name, ch->is->cmsb, ch->is->clsb);
 549                         skb_trim(ch->bch.rx_skb, 0);
 550                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 551                         break;
 552                 }
 553                 if (ch->is->cmsb & HDLC_FSD)
 554                         skb_trim(ch->bch.rx_skb, 0);
 555                 ptr = skb_put(ch->bch.rx_skb, ch->is->clsb);
 556                 rcv_mbox(ch->is, ptr);
 557                 if (ch->is->cmsb & HDLC_FED) {
 558                         if (ch->bch.rx_skb->len < 3) { /* last 2 are the FCS */
 559                                 pr_info("%s: ISAR frame to short %d\n",
 560                                         ch->is->name, ch->bch.rx_skb->len);
 561                                 skb_trim(ch->bch.rx_skb, 0);
 562                                 break;
 563                         }
 564                         skb_trim(ch->bch.rx_skb, ch->bch.rx_skb->len - 2);
 565                         recv_Bchannel(&ch->bch, 0, false);
 566                 }
 567                 if (ch->is->cmsb & SART_NMD) { /* ABORT */
 568                         pr_debug("%s: isar_rcv_frame: no more data\n",
 569                                  ch->is->name);
 570                         ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 571                         if (ch->bch.rx_skb)
 572                                 skb_trim(ch->bch.rx_skb, 0);
 573                         send_mbox(ch->is, SET_DPS(ch->dpath) |
 574                                   ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC, 0, NULL);
 575                         ch->state = STFAX_ESCAPE;
 576                         deliver_status(ch, HW_MOD_NOCARR);
 577                 }
 578                 break;
 579         default:
 580                 pr_info("isar_rcv_frame protocol (%x)error\n", ch->bch.state);
 581                 ch->is->write_reg(ch->is->hw, ISAR_IIA, 0);
 582                 break;
 583         }
 584 }
 585
 586 static void
 587 isar_fill_fifo(struct isar_ch *ch)
 588 {
 589         int count;
 590         u8 msb;
 591         u8 *ptr;
 592
 593         pr_debug("%s: ch%d  tx_skb %d tx_idx %d\n", ch->is->name, ch->bch.nr,
 594                  ch->bch.tx_skb ? ch->bch.tx_skb->len : -1, ch->bch.tx_idx);
 595         if (!(ch->is->bstat &
 596               (ch->dpath == 1 ? BSTAT_RDM1 : BSTAT_RDM2)))
 597                 return;
 598         if (!ch->bch.tx_skb) {
 599                 if (!test_bit(FLG_TX_EMPTY, &ch->bch.Flags) ||
 600                     (ch->bch.state != ISDN_P_B_RAW))
 601                         return;
 602                 count = ch->mml;
 603                 /* use the card buffer */
 604                 memset(ch->is->buf, ch->bch.fill[0], count);
 605                 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 606                           0, count, ch->is->buf);
 607                 return;
 608         }
 609         count = ch->bch.tx_skb->len - ch->bch.tx_idx;
 610         if (count <= 0)
 611                 return;
 612         if (count > ch->mml) {
 613                 msb = 0;
 614                 count = ch->mml;
 615         } else {
 616                 msb = HDLC_FED;
 617         }
 618         ptr = ch->bch.tx_skb->data + ch->bch.tx_idx;
 619         if (!ch->bch.tx_idx) {
 620                 pr_debug("%s: frame start\n", ch->is->name);
 621                 if ((ch->bch.state == ISDN_P_B_T30_FAX) &&
 622                     (ch->cmd == PCTRL_CMD_FTH)) {
 623                         if (count > 1) {
 624                                 if ((ptr[0] == 0xff) && (ptr[1] == 0x13)) {
 625                                         /* last frame */
 626                                         test_and_set_bit(FLG_LASTDATA,
 627                                                          &ch->bch.Flags);
 628                                         pr_debug("%s: set LASTDATA\n",
 629                                                  ch->is->name);
 630                                         if (msb == HDLC_FED)
 631                                                 test_and_set_bit(FLG_DLEETX,
 632                                                                  &ch->bch.Flags);
 633                                 }
 634                         }
 635                 }
 636                 msb |= HDLC_FST;
 637         }
 638         ch->bch.tx_idx += count;
 639         switch (ch->bch.state) {
 640         case ISDN_P_NONE:
 641                 pr_info("%s: wrong protocol 0\n", __func__);
 642                 break;
 643         case ISDN_P_B_RAW:
 644         case ISDN_P_B_L2DTMF:
 645         case ISDN_P_B_MODEM_ASYNC:
 646                 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 647                           0, count, ptr);
 648                 break;
 649         case ISDN_P_B_HDLC:
 650                 send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 651                           msb, count, ptr);
 652                 break;
 653         case ISDN_P_B_T30_FAX:
 654                 if (ch->state != STFAX_ACTIV)
 655                         pr_debug("%s: not ACTIV\n", ch->is->name);
 656                 else if (ch->cmd == PCTRL_CMD_FTH)
 657                         send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 658                                   msb, count, ptr);
 659                 else if (ch->cmd == PCTRL_CMD_FTM)
 660                         send_mbox(ch->is, SET_DPS(ch->dpath) | ISAR_HIS_SDATA,
 661                                   0, count, ptr);
 662                 else
 663                         pr_debug("%s: not FTH/FTM\n", ch->is->name);
 664                 break;
 665         default:
 666                 pr_info("%s: protocol(%x) error\n",
 667                         __func__, ch->bch.state);
 668                 break;
 669         }
 670 }
 671
 672 static inline struct isar_ch *
 673 sel_bch_isar(struct isar_hw *isar, u8 dpath)
 674 {
 675         struct isar_ch  *base = &isar->ch[0];
 676
 677         if ((!dpath) || (dpath > 2))
 678                 return NULL;
 679         if (base->dpath == dpath)
 680                 return base;
 681         base++;
 682         if (base->dpath == dpath)
 683                 return base;
 684         return NULL;
 685 }
 686
 687 static void
 688 send_next(struct isar_ch *ch)
 689 {
 690         pr_debug("%s: %s ch%d tx_skb %d tx_idx %d\n", ch->is->name, __func__,
 691                  ch->bch.nr, ch->bch.tx_skb ? ch->bch.tx_skb->len : -1,
 692                  ch->bch.tx_idx);
 693         if (ch->bch.state == ISDN_P_B_T30_FAX) {
 694                 if (ch->cmd == PCTRL_CMD_FTH) {
 695                         if (test_bit(FLG_LASTDATA, &ch->bch.Flags)) {
 696                                 pr_debug("set NMD_DATA\n");
 697                                 test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
 698                         }
 699                 } else if (ch->cmd == PCTRL_CMD_FTM) {
 700                         if (test_bit(FLG_DLEETX, &ch->bch.Flags)) {
 701                                 test_and_set_bit(FLG_LASTDATA, &ch->bch.Flags);
 702                                 test_and_set_bit(FLG_NMD_DATA, &ch->bch.Flags);
 703                         }
 704                 }
 705         }
 706         if (ch->bch.tx_skb)
 707                 dev_kfree_skb(ch->bch.tx_skb);
 708         if (get_next_bframe(&ch->bch)) {
 709                 isar_fill_fifo(ch);
 710                 test_and_clear_bit(FLG_TX_EMPTY, &ch->bch.Flags);
 711         } else if (test_bit(FLG_TX_EMPTY, &ch->bch.Flags)) {
 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                 } else if (test_bit(FLG_FILLEMPTY, &ch->bch.Flags)) {
 728                         test_and_set_bit(FLG_TX_EMPTY, &ch->bch.Flags);
 729                 }
 730         }
 731 }
 732
 733 static void
 734 check_send(struct isar_hw *isar, u8 rdm)
 735 {
 736         struct isar_ch  *ch;
 737
 738         pr_debug("%s: rdm %x\n", isar->name, rdm);
 739         if (rdm & BSTAT_RDM1) {
 740                 ch = sel_bch_isar(isar, 1);
 741                 if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
 742                         if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
 743                                                ch->bch.tx_idx))
 744                                 isar_fill_fifo(ch);
 745                         else
 746                                 send_next(ch);
 747                 }
 748         }
 749         if (rdm & BSTAT_RDM2) {
 750                 ch = sel_bch_isar(isar, 2);
 751                 if (ch && test_bit(FLG_ACTIVE, &ch->bch.Flags)) {
 752                         if (ch->bch.tx_skb && (ch->bch.tx_skb->len >
 753                                                ch->bch.tx_idx))
 754                                 isar_fill_fifo(ch);
 755                         else
 756                                 send_next(ch);
 757                 }
 758         }
 759 }
 760
 761 const char *dmril[] = {"NO SPEED", "1200/75", "NODEF2", "75/1200", "NODEF4",
 762                        "300", "600", "1200", "2400", "4800", "7200",
 763                        "9600nt", "9600t", "12000", "14400", "WRONG"};
 764 const char *dmrim[] = {"NO MOD", "NO DEF", "V32/V32b", "V22", "V21",
 765                        "Bell103", "V23", "Bell202", "V17", "V29", "V27ter"};
 766
 767 static void
 768 isar_pump_status_rsp(struct isar_ch *ch) {
 769         u8 ril = ch->is->buf[0];
 770         u8 rim;
 771
 772         if (!test_and_clear_bit(ISAR_RATE_REQ, &ch->is->Flags))
 773                 return;
 774         if (ril > 14) {
 775                 pr_info("%s: wrong pstrsp ril=%d\n", ch->is->name, ril);
 776                 ril = 15;
 777         }
 778         switch (ch->is->buf[1]) {
 779         case 0:
 780                 rim = 0;
 781                 break;
 782         case 0x20:
 783                 rim = 2;
 784                 break;
 785         case 0x40:
 786                 rim = 3;
 787                 break;
 788         case 0x41:
 789                 rim = 4;
 790                 break;
 791         case 0x51:
 792                 rim = 5;
 793                 break;
 794         case 0x61:
 795                 rim = 6;
 796                 break;
 797         case 0x71:
 798                 rim = 7;
 799                 break;
 800         case 0x82:
 801                 rim = 8;
 802                 break;
 803         case 0x92:
 804                 rim = 9;
 805                 break;
 806         case 0xa2:
 807                 rim = 10;
 808                 break;
 809         default:
 810                 rim = 1;
 811                 break;
 812         }
 813         sprintf(ch->conmsg, "%s %s", dmril[ril], dmrim[rim]);
 814         pr_debug("%s: pump strsp %s\n", ch->is->name, ch->conmsg);
 815 }
 816
 817 static void
 818 isar_pump_statev_modem(struct isar_ch *ch, u8 devt) {
 819         u8 dps = SET_DPS(ch->dpath);
 820
 821         switch (devt) {
 822         case PSEV_10MS_TIMER:
 823                 pr_debug("%s: pump stev TIMER\n", ch->is->name);
 824                 break;
 825         case PSEV_CON_ON:
 826                 pr_debug("%s: pump stev CONNECT\n", ch->is->name);
 827                 deliver_status(ch, HW_MOD_CONNECT);
 828                 break;
 829         case PSEV_CON_OFF:
 830                 pr_debug("%s: pump stev NO CONNECT\n", ch->is->name);
 831                 send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
 832                 deliver_status(ch, HW_MOD_NOCARR);
 833                 break;
 834         case PSEV_V24_OFF:
 835                 pr_debug("%s: pump stev V24 OFF\n", ch->is->name);
 836                 break;
 837         case PSEV_CTS_ON:
 838                 pr_debug("%s: pump stev CTS ON\n", ch->is->name);
 839                 break;
 840         case PSEV_CTS_OFF:
 841                 pr_debug("%s pump stev CTS OFF\n", ch->is->name);
 842                 break;
 843         case PSEV_DCD_ON:
 844                 pr_debug("%s: pump stev CARRIER ON\n", ch->is->name);
 845                 test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
 846                 send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
 847                 break;
 848         case PSEV_DCD_OFF:
 849                 pr_debug("%s: pump stev CARRIER OFF\n", ch->is->name);
 850                 break;
 851         case PSEV_DSR_ON:
 852                 pr_debug("%s: pump stev DSR ON\n", ch->is->name);
 853                 break;
 854         case PSEV_DSR_OFF:
 855                 pr_debug("%s: pump stev DSR_OFF\n", ch->is->name);
 856                 break;
 857         case PSEV_REM_RET:
 858                 pr_debug("%s: pump stev REMOTE RETRAIN\n", ch->is->name);
 859                 break;
 860         case PSEV_REM_REN:
 861                 pr_debug("%s: pump stev REMOTE RENEGOTIATE\n", ch->is->name);
 862                 break;
 863         case PSEV_GSTN_CLR:
 864                 pr_debug("%s: pump stev GSTN CLEAR\n", ch->is->name);
 865                 break;
 866         default:
 867                 pr_info("u%s: unknown pump stev %x\n", ch->is->name, devt);
 868                 break;
 869         }
 870 }
 871
 872 static void
 873 isar_pump_statev_fax(struct isar_ch *ch, u8 devt) {
 874         u8 dps = SET_DPS(ch->dpath);
 875         u8 p1;
 876
 877         switch (devt) {
 878         case PSEV_10MS_TIMER:
 879                 pr_debug("%s: pump stev TIMER\n", ch->is->name);
 880                 break;
 881         case PSEV_RSP_READY:
 882                 pr_debug("%s: pump stev RSP_READY\n", ch->is->name);
 883                 ch->state = STFAX_READY;
 884                 deliver_status(ch, HW_MOD_READY);
 885 #ifdef AUTOCON
 886                 if (test_bit(BC_FLG_ORIG, &ch->bch.Flags))
 887                         isar_pump_cmd(bch, HW_MOD_FRH, 3);
 888                 else
 889                         isar_pump_cmd(bch, HW_MOD_FTH, 3);
 890 #endif
 891                 break;
 892         case PSEV_LINE_TX_H:
 893                 if (ch->state == STFAX_LINE) {
 894                         pr_debug("%s: pump stev LINE_TX_H\n", ch->is->name);
 895                         ch->state = STFAX_CONT;
 896                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 897                                   PCTRL_CMD_CONT, 0, NULL);
 898                 } else {
 899                         pr_debug("%s: pump stev LINE_TX_H wrong st %x\n",
 900                                  ch->is->name, ch->state);
 901                 }
 902                 break;
 903         case PSEV_LINE_RX_H:
 904                 if (ch->state == STFAX_LINE) {
 905                         pr_debug("%s: pump stev LINE_RX_H\n", ch->is->name);
 906                         ch->state = STFAX_CONT;
 907                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 908                                   PCTRL_CMD_CONT, 0, NULL);
 909                 } else {
 910                         pr_debug("%s: pump stev LINE_RX_H wrong st %x\n",
 911                                  ch->is->name, ch->state);
 912                 }
 913                 break;
 914         case PSEV_LINE_TX_B:
 915                 if (ch->state == STFAX_LINE) {
 916                         pr_debug("%s: pump stev LINE_TX_B\n", ch->is->name);
 917                         ch->state = STFAX_CONT;
 918                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 919                                   PCTRL_CMD_CONT, 0, NULL);
 920                 } else {
 921                         pr_debug("%s: pump stev LINE_TX_B wrong st %x\n",
 922                                  ch->is->name, ch->state);
 923                 }
 924                 break;
 925         case PSEV_LINE_RX_B:
 926                 if (ch->state == STFAX_LINE) {
 927                         pr_debug("%s: pump stev LINE_RX_B\n", ch->is->name);
 928                         ch->state = STFAX_CONT;
 929                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 930                                   PCTRL_CMD_CONT, 0, NULL);
 931                 } else {
 932                         pr_debug("%s: pump stev LINE_RX_B wrong st %x\n",
 933                                  ch->is->name, ch->state);
 934                 }
 935                 break;
 936         case PSEV_RSP_CONN:
 937                 if (ch->state == STFAX_CONT) {
 938                         pr_debug("%s: pump stev RSP_CONN\n", ch->is->name);
 939                         ch->state = STFAX_ACTIV;
 940                         test_and_set_bit(ISAR_RATE_REQ, &ch->is->Flags);
 941                         send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
 942                         if (ch->cmd == PCTRL_CMD_FTH) {
 943                                 int delay = (ch->mod == 3) ? 1000 : 200;
 944                                 /* 1s (200 ms) Flags before data */
 945                                 if (test_and_set_bit(FLG_FTI_RUN,
 946                                                      &ch->bch.Flags))
 947                                         del_timer(&ch->ftimer);
 948                                 ch->ftimer.expires =
 949                                         jiffies + ((delay * HZ) / 1000);
 950                                 test_and_set_bit(FLG_LL_CONN,
 951                                                  &ch->bch.Flags);
 952                                 add_timer(&ch->ftimer);
 953                         } else {
 954                                 deliver_status(ch, HW_MOD_CONNECT);
 955                         }
 956                 } else {
 957                         pr_debug("%s: pump stev RSP_CONN wrong st %x\n",
 958                                  ch->is->name, ch->state);
 959                 }
 960                 break;
 961         case PSEV_FLAGS_DET:
 962                 pr_debug("%s: pump stev FLAGS_DET\n", ch->is->name);
 963                 break;
 964         case PSEV_RSP_DISC:
 965                 pr_debug("%s: pump stev RSP_DISC state(%d)\n",
 966                          ch->is->name, ch->state);
 967                 if (ch->state == STFAX_ESCAPE) {
 968                         p1 = 5;
 969                         switch (ch->newcmd) {
 970                         case 0:
 971                                 ch->state = STFAX_READY;
 972                                 break;
 973                         case PCTRL_CMD_FTM:
 974                                 p1 = 2;
 975                         case PCTRL_CMD_FTH:
 976                                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 977                                           PCTRL_CMD_SILON, 1, &p1);
 978                                 ch->state = STFAX_SILDET;
 979                                 break;
 980                         case PCTRL_CMD_FRH:
 981                         case PCTRL_CMD_FRM:
 982                                 ch->mod = ch->newmod;
 983                                 p1 = ch->newmod;
 984                                 ch->newmod = 0;
 985                                 ch->cmd = ch->newcmd;
 986                                 ch->newcmd = 0;
 987                                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
 988                                           ch->cmd, 1, &p1);
 989                                 ch->state = STFAX_LINE;
 990                                 ch->try_mod = 3;
 991                                 break;
 992                         default:
 993                                 pr_debug("%s: RSP_DISC unknown newcmd %x\n",
 994                                          ch->is->name, ch->newcmd);
 995                                 break;
 996                         }
 997                 } else if (ch->state == STFAX_ACTIV) {
 998                         if (test_and_clear_bit(FLG_LL_OK, &ch->bch.Flags))
 999                                 deliver_status(ch, HW_MOD_OK);
1000                         else if (ch->cmd == PCTRL_CMD_FRM)
1001                                 deliver_status(ch, HW_MOD_NOCARR);
1002                         else
1003                                 deliver_status(ch, HW_MOD_FCERROR);
1004                         ch->state = STFAX_READY;
1005                 } else if (ch->state != STFAX_SILDET) {
1006                         /* ignore in STFAX_SILDET */
1007                         ch->state = STFAX_READY;
1008                         deliver_status(ch, HW_MOD_FCERROR);
1009                 }
1010                 break;
1011         case PSEV_RSP_SILDET:
1012                 pr_debug("%s: pump stev RSP_SILDET\n", ch->is->name);
1013                 if (ch->state == STFAX_SILDET) {
1014                         ch->mod = ch->newmod;
1015                         p1 = ch->newmod;
1016                         ch->newmod = 0;
1017                         ch->cmd = ch->newcmd;
1018                         ch->newcmd = 0;
1019                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
1020                                   ch->cmd, 1, &p1);
1021                         ch->state = STFAX_LINE;
1022                         ch->try_mod = 3;
1023                 }
1024                 break;
1025         case PSEV_RSP_SILOFF:
1026                 pr_debug("%s: pump stev RSP_SILOFF\n", ch->is->name);
1027                 break;
1028         case PSEV_RSP_FCERR:
1029                 if (ch->state == STFAX_LINE) {
1030                         pr_debug("%s: pump stev RSP_FCERR try %d\n",
1031                                  ch->is->name, ch->try_mod);
1032                         if (ch->try_mod--) {
1033                                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL,
1034                                           ch->cmd, 1, &ch->mod);
1035                                 break;
1036                         }
1037                 }
1038                 pr_debug("%s: pump stev RSP_FCERR\n", ch->is->name);
1039                 ch->state = STFAX_ESCAPE;
1040                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, PCTRL_CMD_ESC,
1041                           0, NULL);
1042                 deliver_status(ch, HW_MOD_FCERROR);
1043                 break;
1044         default:
1045                 break;
1046         }
1047 }
1048
1049 void
1050 mISDNisar_irq(struct isar_hw *isar)
1051 {
1052         struct isar_ch *ch;
1053
1054         get_irq_infos(isar);
1055         switch (isar->iis & ISAR_IIS_MSCMSD) {
1056         case ISAR_IIS_RDATA:
1057                 ch = sel_bch_isar(isar, isar->iis >> 6);
1058                 if (ch)
1059                         isar_rcv_frame(ch);
1060                 else {
1061                         pr_debug("%s: ISAR spurious IIS_RDATA %x/%x/%x\n",
1062                                  isar->name, isar->iis, isar->cmsb,
1063                                  isar->clsb);
1064                         isar->write_reg(isar->hw, ISAR_IIA, 0);
1065                 }
1066                 break;
1067         case ISAR_IIS_GSTEV:
1068                 isar->write_reg(isar->hw, ISAR_IIA, 0);
1069                 isar->bstat |= isar->cmsb;
1070                 check_send(isar, isar->cmsb);
1071                 break;
1072         case ISAR_IIS_BSTEV:
1073 #ifdef ERROR_STATISTIC
1074                 ch = sel_bch_isar(isar, isar->iis >> 6);
1075                 if (ch) {
1076                         if (isar->cmsb == BSTEV_TBO)
1077                                 ch->bch.err_tx++;
1078                         if (isar->cmsb == BSTEV_RBO)
1079                                 ch->bch.err_rdo++;
1080                 }
1081 #endif
1082                 pr_debug("%s: Buffer STEV dpath%d msb(%x)\n",
1083                          isar->name, isar->iis >> 6, isar->cmsb);
1084                 isar->write_reg(isar->hw, ISAR_IIA, 0);
1085                 break;
1086         case ISAR_IIS_PSTEV:
1087                 ch = sel_bch_isar(isar, isar->iis >> 6);
1088                 if (ch) {
1089                         rcv_mbox(isar, NULL);
1090                         if (ch->bch.state == ISDN_P_B_MODEM_ASYNC)
1091                                 isar_pump_statev_modem(ch, isar->cmsb);
1092                         else if (ch->bch.state == ISDN_P_B_T30_FAX)
1093                                 isar_pump_statev_fax(ch, isar->cmsb);
1094                         else if (ch->bch.state == ISDN_P_B_RAW) {
1095                                 int     tt;
1096                                 tt = isar->cmsb | 0x30;
1097                                 if (tt == 0x3e)
1098                                         tt = '*';
1099                                 else if (tt == 0x3f)
1100                                         tt = '#';
1101                                 else if (tt > '9')
1102                                         tt += 7;
1103                                 tt |= DTMF_TONE_VAL;
1104                                 _queue_data(&ch->bch.ch, PH_CONTROL_IND,
1105                                             MISDN_ID_ANY, sizeof(tt), &tt,
1106                                             GFP_ATOMIC);
1107                         } else
1108                                 pr_debug("%s: ISAR IIS_PSTEV pm %d sta %x\n",
1109                                          isar->name, ch->bch.state,
1110                                          isar->cmsb);
1111                 } else {
1112                         pr_debug("%s: ISAR spurious IIS_PSTEV %x/%x/%x\n",
1113                                  isar->name, isar->iis, isar->cmsb,
1114                                  isar->clsb);
1115                         isar->write_reg(isar->hw, ISAR_IIA, 0);
1116                 }
1117                 break;
1118         case ISAR_IIS_PSTRSP:
1119                 ch = sel_bch_isar(isar, isar->iis >> 6);
1120                 if (ch) {
1121                         rcv_mbox(isar, NULL);
1122                         isar_pump_status_rsp(ch);
1123                 } else {
1124                         pr_debug("%s: ISAR spurious IIS_PSTRSP %x/%x/%x\n",
1125                                  isar->name, isar->iis, isar->cmsb,
1126                                  isar->clsb);
1127                         isar->write_reg(isar->hw, ISAR_IIA, 0);
1128                 }
1129                 break;
1130         case ISAR_IIS_DIAG:
1131         case ISAR_IIS_BSTRSP:
1132         case ISAR_IIS_IOM2RSP:
1133                 rcv_mbox(isar, NULL);
1134                 break;
1135         case ISAR_IIS_INVMSG:
1136                 rcv_mbox(isar, NULL);
1137                 pr_debug("%s: invalid msg his:%x\n", isar->name, isar->cmsb);
1138                 break;
1139         default:
1140                 rcv_mbox(isar, NULL);
1141                 pr_debug("%s: unhandled msg iis(%x) ctrl(%x/%x)\n",
1142                          isar->name, isar->iis, isar->cmsb, isar->clsb);
1143                 break;
1144         }
1145 }
1146 EXPORT_SYMBOL(mISDNisar_irq);
1147
1148 static void
1149 ftimer_handler(unsigned long data)
1150 {
1151         struct isar_ch *ch = (struct isar_ch *)data;
1152
1153         pr_debug("%s: ftimer flags %lx\n", ch->is->name, ch->bch.Flags);
1154         test_and_clear_bit(FLG_FTI_RUN, &ch->bch.Flags);
1155         if (test_and_clear_bit(FLG_LL_CONN, &ch->bch.Flags))
1156                 deliver_status(ch, HW_MOD_CONNECT);
1157 }
1158
1159 static void
1160 setup_pump(struct isar_ch *ch) {
1161         u8 dps = SET_DPS(ch->dpath);
1162         u8 ctrl, param[6];
1163
1164         switch (ch->bch.state) {
1165         case ISDN_P_NONE:
1166         case ISDN_P_B_RAW:
1167         case ISDN_P_B_HDLC:
1168                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, PMOD_BYPASS, 0, NULL);
1169                 break;
1170         case ISDN_P_B_L2DTMF:
1171                 if (test_bit(FLG_DTMFSEND, &ch->bch.Flags)) {
1172                         param[0] = 5; /* TOA 5 db */
1173                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
1174                                   PMOD_DTMF_TRANS, 1, param);
1175                 } else {
1176                         param[0] = 40; /* REL -46 dbm */
1177                         send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG,
1178                                   PMOD_DTMF, 1, param);
1179                 }
1180         case ISDN_P_B_MODEM_ASYNC:
1181                 ctrl = PMOD_DATAMODEM;
1182                 if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
1183                         ctrl |= PCTRL_ORIG;
1184                         param[5] = PV32P6_CTN;
1185                 } else {
1186                         param[5] = PV32P6_ATN;
1187                 }
1188                 param[0] = 6; /* 6 db */
1189                 param[1] = PV32P2_V23R | PV32P2_V22A | PV32P2_V22B |
1190                         PV32P2_V22C | PV32P2_V21 | PV32P2_BEL;
1191                 param[2] = PV32P3_AMOD | PV32P3_V32B | PV32P3_V23B;
1192                 param[3] = PV32P4_UT144;
1193                 param[4] = PV32P5_UT144;
1194                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 6, param);
1195                 break;
1196         case ISDN_P_B_T30_FAX:
1197                 ctrl = PMOD_FAX;
1198                 if (test_bit(FLG_ORIGIN, &ch->bch.Flags)) {
1199                         ctrl |= PCTRL_ORIG;
1200                         param[1] = PFAXP2_CTN;
1201                 } else {
1202                         param[1] = PFAXP2_ATN;
1203                 }
1204                 param[0] = 6; /* 6 db */
1205                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCFG, ctrl, 2, param);
1206                 ch->state = STFAX_NULL;
1207                 ch->newcmd = 0;
1208                 ch->newmod = 0;
1209                 test_and_set_bit(FLG_FTI_RUN, &ch->bch.Flags);
1210                 break;
1211         }
1212         udelay(1000);
1213         send_mbox(ch->is, dps | ISAR_HIS_PSTREQ, 0, 0, NULL);
1214         udelay(1000);
1215 }
1216
1217 static void
1218 setup_sart(struct isar_ch *ch) {
1219         u8 dps = SET_DPS(ch->dpath);
1220         u8 ctrl, param[2] = {0, 0};
1221
1222         switch (ch->bch.state) {
1223         case ISDN_P_NONE:
1224                 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_DISABLE,
1225                           0, NULL);
1226                 break;
1227         case ISDN_P_B_RAW:
1228         case ISDN_P_B_L2DTMF:
1229                 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_BINARY,
1230                           2, param);
1231                 break;
1232         case ISDN_P_B_HDLC:
1233         case ISDN_P_B_T30_FAX:
1234                 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, SMODE_HDLC,
1235                           1, param);
1236                 break;
1237         case ISDN_P_B_MODEM_ASYNC:
1238                 ctrl = SMODE_V14 | SCTRL_HDMC_BOTH;
1239                 param[0] = S_P1_CHS_8;
1240                 param[1] = S_P2_BFT_DEF;
1241                 send_mbox(ch->is, dps | ISAR_HIS_SARTCFG, ctrl, 2, param);
1242                 break;
1243         }
1244         udelay(1000);
1245         send_mbox(ch->is, dps | ISAR_HIS_BSTREQ, 0, 0, NULL);
1246         udelay(1000);
1247 }
1248
1249 static void
1250 setup_iom2(struct isar_ch *ch) {
1251         u8 dps = SET_DPS(ch->dpath);
1252         u8 cmsb = IOM_CTRL_ENA, msg[5] = {IOM_P1_TXD, 0, 0, 0, 0};
1253
1254         if (ch->bch.nr == 2) {
1255                 msg[1] = 1;
1256                 msg[3] = 1;
1257         }
1258         switch (ch->bch.state) {
1259         case ISDN_P_NONE:
1260                 cmsb = 0;
1261                 /* dummy slot */
1262                 msg[1] = ch->dpath + 2;
1263                 msg[3] = ch->dpath + 2;
1264                 break;
1265         case ISDN_P_B_RAW:
1266         case ISDN_P_B_HDLC:
1267                 break;
1268         case ISDN_P_B_MODEM_ASYNC:
1269         case ISDN_P_B_T30_FAX:
1270                 cmsb |= IOM_CTRL_RCV;
1271         case ISDN_P_B_L2DTMF:
1272                 if (test_bit(FLG_DTMFSEND, &ch->bch.Flags))
1273                         cmsb |= IOM_CTRL_RCV;
1274                 cmsb |= IOM_CTRL_ALAW;
1275                 break;
1276         }
1277         send_mbox(ch->is, dps | ISAR_HIS_IOM2CFG, cmsb, 5, msg);
1278         udelay(1000);
1279         send_mbox(ch->is, dps | ISAR_HIS_IOM2REQ, 0, 0, NULL);
1280         udelay(1000);
1281 }
1282
1283 static int
1284 modeisar(struct isar_ch *ch, u32 bprotocol)
1285 {
1286         /* Here we are selecting the best datapath for requested protocol */
1287         if (ch->bch.state == ISDN_P_NONE) { /* New Setup */
1288                 switch (bprotocol) {
1289                 case ISDN_P_NONE: /* init */
1290                         if (!ch->dpath)
1291                                 /* no init for dpath 0 */
1292                                 return 0;
1293                         test_and_clear_bit(FLG_HDLC, &ch->bch.Flags);
1294                         test_and_clear_bit(FLG_TRANSPARENT, &ch->bch.Flags);
1295                         break;
1296                 case ISDN_P_B_RAW:
1297                 case ISDN_P_B_HDLC:
1298                         /* best is datapath 2 */
1299                         if (!test_and_set_bit(ISAR_DP2_USE, &ch->is->Flags))
1300                                 ch->dpath = 2;
1301                         else if (!test_and_set_bit(ISAR_DP1_USE,
1302                                                    &ch->is->Flags))
1303                                 ch->dpath = 1;
1304                         else {
1305                                 pr_info("modeisar both paths in use\n");
1306                                 return -EBUSY;
1307                         }
1308                         if (bprotocol == ISDN_P_B_HDLC)
1309                                 test_and_set_bit(FLG_HDLC, &ch->bch.Flags);
1310                         else
1311                                 test_and_set_bit(FLG_TRANSPARENT,
1312                                                  &ch->bch.Flags);
1313                         break;
1314                 case ISDN_P_B_MODEM_ASYNC:
1315                 case ISDN_P_B_T30_FAX:
1316                 case ISDN_P_B_L2DTMF:
1317                         /* only datapath 1 */
1318                         if (!test_and_set_bit(ISAR_DP1_USE, &ch->is->Flags))
1319                                 ch->dpath = 1;
1320                         else {
1321                                 pr_info("%s: ISAR modeisar analog functions"
1322                                         "only with DP1\n", ch->is->name);
1323                                 return -EBUSY;
1324                         }
1325                         break;
1326                 default:
1327                         pr_info("%s: protocol not known %x\n", ch->is->name,
1328                                 bprotocol);
1329                         return -ENOPROTOOPT;
1330                 }
1331         }
1332         pr_debug("%s: ISAR ch%d dp%d protocol %x->%x\n", ch->is->name,
1333                  ch->bch.nr, ch->dpath, ch->bch.state, bprotocol);
1334         ch->bch.state = bprotocol;
1335         setup_pump(ch);
1336         setup_iom2(ch);
1337         setup_sart(ch);
1338         if (ch->bch.state == ISDN_P_NONE) {
1339                 /* Clear resources */
1340                 if (ch->dpath == 1)
1341                         test_and_clear_bit(ISAR_DP1_USE, &ch->is->Flags);
1342                 else if (ch->dpath == 2)
1343                         test_and_clear_bit(ISAR_DP2_USE, &ch->is->Flags);
1344                 ch->dpath = 0;
1345                 ch->is->ctrl(ch->is->hw, HW_DEACT_IND, ch->bch.nr);
1346         } else
1347                 ch->is->ctrl(ch->is->hw, HW_ACTIVATE_IND, ch->bch.nr);
1348         return 0;
1349 }
1350
1351 static void
1352 isar_pump_cmd(struct isar_ch *ch, u32 cmd, u8 para)
1353 {
1354         u8 dps = SET_DPS(ch->dpath);
1355         u8 ctrl = 0, nom = 0, p1 = 0;
1356
1357         pr_debug("%s: isar_pump_cmd %x/%x state(%x)\n",
1358                  ch->is->name, cmd, para, ch->bch.state);
1359         switch (cmd) {
1360         case HW_MOD_FTM:
1361                 if (ch->state == STFAX_READY) {
1362                         p1 = para;
1363                         ctrl = PCTRL_CMD_FTM;
1364                         nom = 1;
1365                         ch->state = STFAX_LINE;
1366                         ch->cmd = ctrl;
1367                         ch->mod = para;
1368                         ch->newmod = 0;
1369                         ch->newcmd = 0;
1370                         ch->try_mod = 3;
1371                 } else if ((ch->state == STFAX_ACTIV) &&
1372                            (ch->cmd == PCTRL_CMD_FTM) && (ch->mod == para))
1373                         deliver_status(ch, HW_MOD_CONNECT);
1374                 else {
1375                         ch->newmod = para;
1376                         ch->newcmd = PCTRL_CMD_FTM;
1377                         nom = 0;
1378                         ctrl = PCTRL_CMD_ESC;
1379                         ch->state = STFAX_ESCAPE;
1380                 }
1381                 break;
1382         case HW_MOD_FTH:
1383                 if (ch->state == STFAX_READY) {
1384                         p1 = para;
1385                         ctrl = PCTRL_CMD_FTH;
1386                         nom = 1;
1387                         ch->state = STFAX_LINE;
1388                         ch->cmd = ctrl;
1389                         ch->mod = para;
1390                         ch->newmod = 0;
1391                         ch->newcmd = 0;
1392                         ch->try_mod = 3;
1393                 } else if ((ch->state == STFAX_ACTIV) &&
1394                            (ch->cmd == PCTRL_CMD_FTH) && (ch->mod == para))
1395                         deliver_status(ch, HW_MOD_CONNECT);
1396                 else {
1397                         ch->newmod = para;
1398                         ch->newcmd = PCTRL_CMD_FTH;
1399                         nom = 0;
1400                         ctrl = PCTRL_CMD_ESC;
1401                         ch->state = STFAX_ESCAPE;
1402                 }
1403                 break;
1404         case HW_MOD_FRM:
1405                 if (ch->state == STFAX_READY) {
1406                         p1 = para;
1407                         ctrl = PCTRL_CMD_FRM;
1408                         nom = 1;
1409                         ch->state = STFAX_LINE;
1410                         ch->cmd = ctrl;
1411                         ch->mod = para;
1412                         ch->newmod = 0;
1413                         ch->newcmd = 0;
1414                         ch->try_mod = 3;
1415                 } else if ((ch->state == STFAX_ACTIV) &&
1416                            (ch->cmd == PCTRL_CMD_FRM) && (ch->mod == para))
1417                         deliver_status(ch, HW_MOD_CONNECT);
1418                 else {
1419                         ch->newmod = para;
1420                         ch->newcmd = PCTRL_CMD_FRM;
1421                         nom = 0;
1422                         ctrl = PCTRL_CMD_ESC;
1423                         ch->state = STFAX_ESCAPE;
1424                 }
1425                 break;
1426         case HW_MOD_FRH:
1427                 if (ch->state == STFAX_READY) {
1428                         p1 = para;
1429                         ctrl = PCTRL_CMD_FRH;
1430                         nom = 1;
1431                         ch->state = STFAX_LINE;
1432                         ch->cmd = ctrl;
1433                         ch->mod = para;
1434                         ch->newmod = 0;
1435                         ch->newcmd = 0;
1436                         ch->try_mod = 3;
1437                 } else if ((ch->state == STFAX_ACTIV) &&
1438                            (ch->cmd == PCTRL_CMD_FRH) && (ch->mod == para))
1439                         deliver_status(ch, HW_MOD_CONNECT);
1440                 else {
1441                         ch->newmod = para;
1442                         ch->newcmd = PCTRL_CMD_FRH;
1443                         nom = 0;
1444                         ctrl = PCTRL_CMD_ESC;
1445                         ch->state = STFAX_ESCAPE;
1446                 }
1447                 break;
1448         case PCTRL_CMD_TDTMF:
1449                 p1 = para;
1450                 nom = 1;
1451                 ctrl = PCTRL_CMD_TDTMF;
1452                 break;
1453         }
1454         if (ctrl)
1455                 send_mbox(ch->is, dps | ISAR_HIS_PUMPCTRL, ctrl, nom, &p1);
1456 }
1457
1458 static void
1459 isar_setup(struct isar_hw *isar)
1460 {
1461         u8 msg;
1462         int i;
1463
1464         /* Dpath 1, 2 */
1465         msg = 61;
1466         for (i = 0; i < 2; i++) {
1467                 /* Buffer Config */
1468                 send_mbox(isar, (i ? ISAR_HIS_DPS2 : ISAR_HIS_DPS1) |
1469                           ISAR_HIS_P12CFG, 4, 1, &msg);
1470                 isar->ch[i].mml = msg;
1471                 isar->ch[i].bch.state = 0;
1472                 isar->ch[i].dpath = i + 1;
1473                 modeisar(&isar->ch[i], ISDN_P_NONE);
1474         }
1475 }
1476
1477 static int
1478 isar_l2l1(struct mISDNchannel *ch, struct sk_buff *skb)
1479 {
1480         struct bchannel *bch = container_of(ch, struct bchannel, ch);
1481         struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
1482         int ret = -EINVAL;
1483         struct mISDNhead *hh = mISDN_HEAD_P(skb);
1484         u32 id, *val;
1485         u_long flags;
1486
1487         switch (hh->prim) {
1488         case PH_DATA_REQ:
1489                 spin_lock_irqsave(ich->is->hwlock, flags);
1490                 ret = bchannel_senddata(bch, skb);
1491                 if (ret > 0) { /* direct TX */
1492                         ret = 0;
1493                         isar_fill_fifo(ich);
1494                 }
1495                 spin_unlock_irqrestore(ich->is->hwlock, flags);
1496                 return ret;
1497         case PH_ACTIVATE_REQ:
1498                 spin_lock_irqsave(ich->is->hwlock, flags);
1499                 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags))
1500                         ret = modeisar(ich, ch->protocol);
1501                 else
1502                         ret = 0;
1503                 spin_unlock_irqrestore(ich->is->hwlock, flags);
1504                 if (!ret)
1505                         _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
1506                                     NULL, GFP_KERNEL);
1507                 break;
1508         case PH_DEACTIVATE_REQ:
1509                 spin_lock_irqsave(ich->is->hwlock, flags);
1510                 mISDN_clear_bchannel(bch);
1511                 modeisar(ich, ISDN_P_NONE);
1512                 spin_unlock_irqrestore(ich->is->hwlock, flags);
1513                 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0,
1514                             NULL, GFP_KERNEL);
1515                 ret = 0;
1516                 break;
1517         case PH_CONTROL_REQ:
1518                 val = (u32 *)skb->data;
1519                 pr_debug("%s: PH_CONTROL | REQUEST %x/%x\n", ich->is->name,
1520                          hh->id, *val);
1521                 if ((hh->id == 0) && ((*val & ~DTMF_TONE_MASK) ==
1522                                       DTMF_TONE_VAL)) {
1523                         if (bch->state == ISDN_P_B_L2DTMF) {
1524                                 char tt = *val & DTMF_TONE_MASK;
1525
1526                                 if (tt == '*')
1527                                         tt = 0x1e;
1528                                 else if (tt == '#')
1529                                         tt = 0x1f;
1530                                 else if (tt > '9')
1531                                         tt -= 7;
1532                                 tt &= 0x1f;
1533                                 spin_lock_irqsave(ich->is->hwlock, flags);
1534                                 isar_pump_cmd(ich, PCTRL_CMD_TDTMF, tt);
1535                                 spin_unlock_irqrestore(ich->is->hwlock, flags);
1536                         } else {
1537                                 pr_info("%s: DTMF send wrong protocol %x\n",
1538                                         __func__, bch->state);
1539                                 return -EINVAL;
1540                         }
1541                 } else if ((hh->id == HW_MOD_FRM) || (hh->id == HW_MOD_FRH) ||
1542                            (hh->id == HW_MOD_FTM) || (hh->id == HW_MOD_FTH)) {
1543                         for (id = 0; id < FAXMODCNT; id++)
1544                                 if (faxmodulation[id] == *val)
1545                                         break;
1546                         if ((FAXMODCNT > id) &&
1547                             test_bit(FLG_INITIALIZED, &bch->Flags)) {
1548                                 pr_debug("%s: isar: new mod\n", ich->is->name);
1549                                 isar_pump_cmd(ich, hh->id, *val);
1550                                 ret = 0;
1551                         } else {
1552                                 pr_info("%s: wrong modulation\n",
1553                                         ich->is->name);
1554                                 ret = -EINVAL;
1555                         }
1556                 } else if (hh->id == HW_MOD_LASTDATA)
1557                         test_and_set_bit(FLG_DLEETX, &bch->Flags);
1558                 else {
1559                         pr_info("%s: unknown PH_CONTROL_REQ %x\n",
1560                                 ich->is->name, hh->id);
1561                         ret = -EINVAL;
1562                 }
1563         default:
1564                 pr_info("%s: %s unknown prim(%x,%x)\n",
1565                         ich->is->name, __func__, hh->prim, hh->id);
1566                 ret = -EINVAL;
1567         }
1568         if (!ret)
1569                 dev_kfree_skb(skb);
1570         return ret;
1571 }
1572
1573 static int
1574 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
1575 {
1576         return mISDN_ctrl_bchannel(bch, cq);
1577 }
1578
1579 static int
1580 isar_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg)
1581 {
1582         struct bchannel *bch = container_of(ch, struct bchannel, ch);
1583         struct isar_ch *ich = container_of(bch, struct isar_ch, bch);
1584         int ret = -EINVAL;
1585         u_long flags;
1586
1587         pr_debug("%s: %s cmd:%x %p\n", ich->is->name, __func__, cmd, arg);
1588         switch (cmd) {
1589         case CLOSE_CHANNEL:
1590                 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1591                 cancel_work_sync(&bch->workq);
1592                 spin_lock_irqsave(ich->is->hwlock, flags);
1593                 mISDN_clear_bchannel(bch);
1594                 modeisar(ich, ISDN_P_NONE);
1595                 spin_unlock_irqrestore(ich->is->hwlock, flags);
1596                 ch->protocol = ISDN_P_NONE;
1597                 ch->peer = NULL;
1598                 module_put(ich->is->owner);
1599                 ret = 0;
1600                 break;
1601         case CONTROL_CHANNEL:
1602                 ret = channel_bctrl(bch, arg);
1603                 break;
1604         default:
1605                 pr_info("%s: %s unknown prim(%x)\n",
1606                         ich->is->name, __func__, cmd);
1607         }
1608         return ret;
1609 }
1610
1611 static void
1612 free_isar(struct isar_hw *isar)
1613 {
1614         modeisar(&isar->ch[0], ISDN_P_NONE);
1615         modeisar(&isar->ch[1], ISDN_P_NONE);
1616         del_timer(&isar->ch[0].ftimer);
1617         del_timer(&isar->ch[1].ftimer);
1618         test_and_clear_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
1619         test_and_clear_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
1620 }
1621
1622 static int
1623 init_isar(struct isar_hw *isar)
1624 {
1625         int     cnt = 3;
1626
1627         while (cnt--) {
1628                 isar->version = ISARVersion(isar);
1629                 if (isar->ch[0].bch.debug & DEBUG_HW)
1630                         pr_notice("%s: Testing version %d (%d time)\n",
1631                                   isar->name, isar->version, 3 - cnt);
1632                 if (isar->version == 1)
1633                         break;
1634                 isar->ctrl(isar->hw, HW_RESET_REQ, 0);
1635         }
1636         if (isar->version != 1)
1637                 return -EINVAL;
1638         isar->ch[0].ftimer.function = &ftimer_handler;
1639         isar->ch[0].ftimer.data = (long)&isar->ch[0];
1640         init_timer(&isar->ch[0].ftimer);
1641         test_and_set_bit(FLG_INITIALIZED, &isar->ch[0].bch.Flags);
1642         isar->ch[1].ftimer.function = &ftimer_handler;
1643         isar->ch[1].ftimer.data = (long)&isar->ch[1];
1644         init_timer(&isar->ch[1].ftimer);
1645         test_and_set_bit(FLG_INITIALIZED, &isar->ch[1].bch.Flags);
1646         return 0;
1647 }
1648
1649 static int
1650 isar_open(struct isar_hw *isar, struct channel_req *rq)
1651 {
1652         struct bchannel         *bch;
1653
1654         if (rq->adr.channel == 0 || rq->adr.channel > 2)
1655                 return -EINVAL;
1656         if (rq->protocol == ISDN_P_NONE)
1657                 return -EINVAL;
1658         bch = &isar->ch[rq->adr.channel - 1].bch;
1659         if (test_and_set_bit(FLG_OPEN, &bch->Flags))
1660                 return -EBUSY; /* b-channel can be only open once */
1661         bch->ch.protocol = rq->protocol;
1662         rq->ch = &bch->ch;
1663         return 0;
1664 }
1665
1666 u32
1667 mISDNisar_init(struct isar_hw *isar, void *hw)
1668 {
1669         u32 ret, i;
1670
1671         isar->hw = hw;
1672         for (i = 0; i < 2; i++) {
1673                 isar->ch[i].bch.nr = i + 1;
1674                 mISDN_initbchannel(&isar->ch[i].bch, MAX_DATA_MEM, 32);
1675                 isar->ch[i].bch.ch.nr = i + 1;
1676                 isar->ch[i].bch.ch.send = &isar_l2l1;
1677                 isar->ch[i].bch.ch.ctrl = isar_bctrl;
1678                 isar->ch[i].bch.hw = hw;
1679                 isar->ch[i].is = isar;
1680         }
1681
1682         isar->init = &init_isar;
1683         isar->release = &free_isar;
1684         isar->firmware = &load_firmware;
1685         isar->open = &isar_open;
1686
1687         ret =   (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1688                 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)) |
1689                 (1 << (ISDN_P_B_L2DTMF & ISDN_P_B_MASK)) |
1690                 (1 << (ISDN_P_B_MODEM_ASYNC & ISDN_P_B_MASK)) |
1691                 (1 << (ISDN_P_B_T30_FAX & ISDN_P_B_MASK));
1692
1693         return ret;
1694 }
1695 EXPORT_SYMBOL(mISDNisar_init);
1696
1697 static int __init isar_mod_init(void)
1698 {
1699         pr_notice("mISDN: ISAR driver Rev. %s\n", ISAR_REV);
1700         return 0;
1701 }
1702
1703 static void __exit isar_mod_cleanup(void)
1704 {
1705         pr_notice("mISDN: ISAR module unloaded\n");
1706 }
1707 module_init(isar_mod_init);
1708 module_exit(isar_mod_cleanup);