git.oblomov.eu Git - linux-2.6/blob - drivers/isdn/hisax/hfc_sx.c

   1 /* $Id: hfc_sx.c,v 1.12.2.5 2004/02/11 13:21:33 keil Exp $
   2  *
   3  * level driver for Cologne Chip Designs hfc-s+/sp based cards
   4  *
   5  * Author       Werner Cornelius
   6  *              based on existing driver for CCD HFC PCI cards
   7  * Copyright    by Werner Cornelius  <werner@isdn4linux.de>
   8  *
   9  * This software may be used and distributed according to the terms
  10  * of the GNU General Public License, incorporated herein by reference.
  11  *
  12  */
  13
  14 #include <linux/init.h>
  15 #include "hisax.h"
  16 #include "hfc_sx.h"
  17 #include "isdnl1.h"
  18 #include <linux/interrupt.h>
  19 #include <linux/isapnp.h>
  20
  21 static const char *hfcsx_revision = "$Revision: 1.12.2.5 $";
  22
  23 /***************************************/
  24 /* IRQ-table for CCDs demo board       */
  25 /* IRQs 6,5,10,11,12,15 are supported  */
  26 /***************************************/
  27
  28 /* Teles 16.3c Vendor Id TAG2620, Version 1.0, Vendor version 2.1
  29  *
  30  * Thanks to Uwe Wisniewski
  31  *
  32  * ISA-SLOT  Signal      PIN
  33  * B25        IRQ3     92 IRQ_G
  34  * B23        IRQ5     94 IRQ_A
  35  * B4         IRQ2/9   95 IRQ_B
  36  * D3         IRQ10    96 IRQ_C
  37  * D4         IRQ11    97 IRQ_D
  38  * D5         IRQ12    98 IRQ_E
  39  * D6         IRQ15    99 IRQ_F
  40  */
  41
  42 #undef CCD_DEMO_BOARD
  43 #ifdef CCD_DEMO_BOARD
  44 static u_char ccd_sp_irqtab[16] = {
  45   0,0,0,0,0,2,1,0,0,0,3,4,5,0,0,6
  46 };
  47 #else /* Teles 16.3c */
  48 static u_char ccd_sp_irqtab[16] = {
  49   0,0,0,7,0,1,0,0,0,2,3,4,5,0,0,6
  50 };
  51 #endif
  52 #define NT_T1_COUNT 20          /* number of 3.125ms interrupts for G2 timeout */
  53
  54 #define byteout(addr,val) outb(val,addr)
  55 #define bytein(addr) inb(addr)
  56
  57 /******************************/
  58 /* In/Out access to registers */
  59 /******************************/
  60 static inline void
  61 Write_hfc(struct IsdnCardState *cs, u_char regnum, u_char val)
  62 {
  63         byteout(cs->hw.hfcsx.base+1, regnum);
  64         byteout(cs->hw.hfcsx.base, val);
  65 }
  66
  67 static inline u_char
  68 Read_hfc(struct IsdnCardState *cs, u_char regnum)
  69 {
  70         u_char ret;
  71
  72         byteout(cs->hw.hfcsx.base+1, regnum);
  73         ret = bytein(cs->hw.hfcsx.base);
  74         return(ret);
  75 }
  76
  77
  78 /**************************************************/
  79 /* select a fifo and remember which one for reuse */
  80 /**************************************************/
  81 static void
  82 fifo_select(struct IsdnCardState *cs, u_char fifo)
  83 {
  84         if (fifo == cs->hw.hfcsx.last_fifo)
  85           return; /* still valid */
  86
  87         byteout(cs->hw.hfcsx.base+1, HFCSX_FIF_SEL);
  88         byteout(cs->hw.hfcsx.base, fifo);
  89         while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
  90         udelay(4);
  91         byteout(cs->hw.hfcsx.base, fifo);
  92         while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
  93 }
  94
  95 /******************************************/
  96 /* reset the specified fifo to defaults.  */
  97 /* If its a send fifo init needed markers */
  98 /******************************************/
  99 static void
 100 reset_fifo(struct IsdnCardState *cs, u_char fifo)
 101 {
 102         fifo_select(cs, fifo); /* first select the fifo */
 103         byteout(cs->hw.hfcsx.base+1, HFCSX_CIRM);
 104         byteout(cs->hw.hfcsx.base, cs->hw.hfcsx.cirm | 0x80); /* reset cmd */
 105         udelay(1);
 106         while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
 107 }
 108
 109
 110 /*************************************************************/
 111 /* write_fifo writes the skb contents to the desired fifo    */
 112 /* if no space is available or an error occurs 0 is returned */
 113 /* the skb is not released in any way.                       */
 114 /*************************************************************/
 115 static int
 116 write_fifo(struct IsdnCardState *cs, struct sk_buff *skb, u_char fifo, int trans_max)
 117 {
 118        unsigned short *msp;
 119         int fifo_size, count, z1, z2;
 120         u_char f_msk, f1, f2, *src;
 121
 122         if (skb->len <= 0) return(0);
 123         if (fifo & 1) return(0); /* no write fifo */
 124
 125         fifo_select(cs, fifo);
 126         if (fifo & 4) {
 127           fifo_size = D_FIFO_SIZE; /* D-channel */
 128           f_msk = MAX_D_FRAMES;
 129           if (trans_max) return(0); /* only HDLC */
 130         }
 131         else {
 132           fifo_size = cs->hw.hfcsx.b_fifo_size; /* B-channel */
 133           f_msk = MAX_B_FRAMES;
 134         }
 135
 136         z1 = Read_hfc(cs, HFCSX_FIF_Z1H);
 137         z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L));
 138
 139         /* Check for transparent mode */
 140         if (trans_max) {
 141           z2 = Read_hfc(cs, HFCSX_FIF_Z2H);
 142           z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L));
 143           count = z2 - z1;
 144           if (count <= 0)
 145             count += fifo_size; /* free bytes */
 146           if (count < skb->len+1) return(0); /* no room */
 147           count = fifo_size - count; /* bytes still not send */
 148           if (count > 2 * trans_max) return(0); /* delay to long */
 149           count = skb->len;
 150           src = skb->data;
 151           while (count--)
 152             Write_hfc(cs, HFCSX_FIF_DWR, *src++);
 153           return(1); /* success */
 154         }
 155
 156         msp = ((struct hfcsx_extra *)(cs->hw.hfcsx.extra))->marker;
 157         msp += (((fifo >> 1) & 3) * (MAX_B_FRAMES+1));
 158         f1 = Read_hfc(cs, HFCSX_FIF_F1) & f_msk;
 159         f2 = Read_hfc(cs, HFCSX_FIF_F2) & f_msk;
 160
 161         count = f1 - f2; /* frame count actually buffered */
 162         if (count < 0)
 163                 count += (f_msk + 1);   /* if wrap around */
 164         if (count > f_msk-1) {
 165           if (cs->debug & L1_DEB_ISAC_FIFO)
 166             debugl1(cs, "hfcsx_write_fifo %d more as %d frames",fifo,f_msk-1);
 167           return(0);
 168         }
 169
 170         *(msp + f1) = z1; /* remember marker */
 171
 172         if (cs->debug & L1_DEB_ISAC_FIFO)
 173                 debugl1(cs, "hfcsx_write_fifo %d f1(%x) f2(%x) z1(f1)(%x)",
 174                         fifo, f1, f2, z1);
 175         /* now determine free bytes in FIFO buffer */
 176         count = *(msp + f2) - z1;
 177         if (count <= 0)
 178           count += fifo_size;   /* count now contains available bytes */
 179
 180         if (cs->debug & L1_DEB_ISAC_FIFO)
 181           debugl1(cs, "hfcsx_write_fifo %d count(%ld/%d)",
 182                   fifo, skb->len, count);
 183         if (count < skb->len) {
 184           if (cs->debug & L1_DEB_ISAC_FIFO)
 185             debugl1(cs, "hfcsx_write_fifo %d no fifo mem", fifo);
 186           return(0);
 187         }
 188
 189         count = skb->len; /* get frame len */
 190         src = skb->data;        /* source pointer */
 191         while (count--)
 192           Write_hfc(cs, HFCSX_FIF_DWR, *src++);
 193
 194         Read_hfc(cs, HFCSX_FIF_INCF1); /* increment F1 */
 195         udelay(1);
 196         while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
 197         return(1);
 198 }
 199
 200 /***************************************************************/
 201 /* read_fifo reads data to an skb from the desired fifo        */
 202 /* if no data is available or an error occurs NULL is returned */
 203 /* the skb is not released in any way.                         */
 204 /***************************************************************/
 205 static struct sk_buff *
 206 read_fifo(struct IsdnCardState *cs, u_char fifo, int trans_max)
 207 {       int fifo_size, count, z1, z2;
 208         u_char f_msk, f1, f2, *dst;
 209         struct sk_buff *skb;
 210
 211         if (!(fifo & 1)) return(NULL); /* no read fifo */
 212         fifo_select(cs, fifo);
 213         if (fifo & 4) {
 214           fifo_size = D_FIFO_SIZE; /* D-channel */
 215           f_msk = MAX_D_FRAMES;
 216           if (trans_max) return(NULL); /* only hdlc */
 217         }
 218         else {
 219           fifo_size = cs->hw.hfcsx.b_fifo_size; /* B-channel */
 220           f_msk = MAX_B_FRAMES;
 221         }
 222
 223         /* transparent mode */
 224         if (trans_max) {
 225           z1 = Read_hfc(cs, HFCSX_FIF_Z1H);
 226           z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L));
 227           z2 = Read_hfc(cs, HFCSX_FIF_Z2H);
 228           z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L));
 229           /* now determine bytes in actual FIFO buffer */
 230           count = z1 - z2;
 231           if (count <= 0)
 232             count += fifo_size; /* count now contains buffered bytes */
 233           count++;
 234           if (count > trans_max)
 235             count = trans_max; /* limit length */
 236             if ((skb = dev_alloc_skb(count))) {
 237               dst = skb_put(skb, count);
 238               while (count--)
 239                 *dst++ = Read_hfc(cs, HFCSX_FIF_DRD);
 240               return(skb);
 241             }
 242             else return(NULL); /* no memory */
 243         }
 244
 245         do {
 246           f1 = Read_hfc(cs, HFCSX_FIF_F1) & f_msk;
 247           f2 = Read_hfc(cs, HFCSX_FIF_F2) & f_msk;
 248
 249           if (f1 == f2) return(NULL); /* no frame available */
 250
 251           z1 = Read_hfc(cs, HFCSX_FIF_Z1H);
 252           z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L));
 253           z2 = Read_hfc(cs, HFCSX_FIF_Z2H);
 254           z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L));
 255
 256           if (cs->debug & L1_DEB_ISAC_FIFO)
 257             debugl1(cs, "hfcsx_read_fifo %d f1(%x) f2(%x) z1(f2)(%x) z2(f2)(%x)",
 258                         fifo, f1, f2, z1, z2);
 259           /* now determine bytes in actual FIFO buffer */
 260           count = z1 - z2;
 261           if (count <= 0)
 262             count += fifo_size; /* count now contains buffered bytes */
 263           count++;
 264
 265           if (cs->debug & L1_DEB_ISAC_FIFO)
 266             debugl1(cs, "hfcsx_read_fifo %d count %ld)",
 267                     fifo, count);
 268
 269           if ((count > fifo_size) || (count < 4)) {
 270             if (cs->debug & L1_DEB_WARN)
 271               debugl1(cs, "hfcsx_read_fifo %d paket inv. len %d ", fifo , count);
 272             while (count) {
 273               count--; /* empty fifo */
 274               Read_hfc(cs, HFCSX_FIF_DRD);
 275             }
 276             skb = NULL;
 277           } else
 278             if ((skb = dev_alloc_skb(count - 3))) {
 279               count -= 3;
 280               dst = skb_put(skb, count);
 281
 282               while (count--)
 283                 *dst++ = Read_hfc(cs, HFCSX_FIF_DRD);
 284
 285               Read_hfc(cs, HFCSX_FIF_DRD); /* CRC 1 */
 286               Read_hfc(cs, HFCSX_FIF_DRD); /* CRC 2 */
 287               if (Read_hfc(cs, HFCSX_FIF_DRD)) {
 288                 dev_kfree_skb_irq(skb);
 289                 if (cs->debug & L1_DEB_ISAC_FIFO)
 290                   debugl1(cs, "hfcsx_read_fifo %d crc error", fifo);
 291                 skb = NULL;
 292               }
 293             } else {
 294               printk(KERN_WARNING "HFC-SX: receive out of memory\n");
 295               return(NULL);
 296             }
 297
 298           Read_hfc(cs, HFCSX_FIF_INCF2); /* increment F2 */
 299           udelay(1);
 300           while (bytein(cs->hw.hfcsx.base+1) & 1); /* wait for busy */
 301           udelay(1);
 302         } while (!skb); /* retry in case of crc error */
 303         return(skb);
 304 }
 305
 306 /******************************************/
 307 /* free hardware resources used by driver */
 308 /******************************************/
 309 static void
 310 release_io_hfcsx(struct IsdnCardState *cs)
 311 {
 312         cs->hw.hfcsx.int_m2 = 0;        /* interrupt output off ! */
 313         Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
 314         Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET); /* Reset On */
 315         msleep(30);                             /* Timeout 30ms */
 316         Write_hfc(cs, HFCSX_CIRM, 0);   /* Reset Off */
 317         del_timer(&cs->hw.hfcsx.timer);
 318         release_region(cs->hw.hfcsx.base, 2); /* release IO-Block */
 319         kfree(cs->hw.hfcsx.extra);
 320         cs->hw.hfcsx.extra = NULL;
 321 }
 322
 323 /**********************************************************/
 324 /* set_fifo_size determines the size of the RAM and FIFOs */
 325 /* returning 0 -> need to reset the chip again.           */
 326 /**********************************************************/
 327 static int set_fifo_size(struct IsdnCardState *cs)
 328 {
 329
 330         if (cs->hw.hfcsx.b_fifo_size) return(1); /* already determined */
 331
 332         if ((cs->hw.hfcsx.chip >> 4) == 9) {
 333           cs->hw.hfcsx.b_fifo_size = B_FIFO_SIZE_32K;
 334           return(1);
 335         }
 336
 337           cs->hw.hfcsx.b_fifo_size = B_FIFO_SIZE_8K;
 338           cs->hw.hfcsx.cirm |= 0x10; /* only 8K of ram */
 339           return(0);
 340
 341 }
 342
 343 /********************************************************************************/
 344 /* function called to reset the HFC SX chip. A complete software reset of chip */
 345 /* and fifos is done.                                                           */
 346 /********************************************************************************/
 347 static void
 348 reset_hfcsx(struct IsdnCardState *cs)
 349 {
 350         cs->hw.hfcsx.int_m2 = 0;        /* interrupt output off ! */
 351         Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
 352
 353         printk(KERN_INFO "HFC_SX: resetting card\n");
 354         while (1) {
 355           Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET | cs->hw.hfcsx.cirm ); /* Reset */
 356           mdelay(30);
 357           Write_hfc(cs, HFCSX_CIRM, cs->hw.hfcsx.cirm); /* Reset Off */
 358           mdelay(20);
 359           if (Read_hfc(cs, HFCSX_STATUS) & 2)
 360             printk(KERN_WARNING "HFC-SX init bit busy\n");
 361           cs->hw.hfcsx.last_fifo = 0xff; /* invalidate */
 362           if (!set_fifo_size(cs)) continue;
 363           break;
 364         }
 365
 366         cs->hw.hfcsx.trm = 0 + HFCSX_BTRANS_THRESMASK;  /* no echo connect , threshold */
 367         Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm);
 368
 369         Write_hfc(cs, HFCSX_CLKDEL, 0x0e);      /* ST-Bit delay for TE-Mode */
 370         cs->hw.hfcsx.sctrl_e = HFCSX_AUTO_AWAKE;
 371         Write_hfc(cs, HFCSX_SCTRL_E, cs->hw.hfcsx.sctrl_e);     /* S/T Auto awake */
 372         cs->hw.hfcsx.bswapped = 0;      /* no exchange */
 373         cs->hw.hfcsx.nt_mode = 0;       /* we are in TE mode */
 374         cs->hw.hfcsx.ctmt = HFCSX_TIM3_125 | HFCSX_AUTO_TIMER;
 375         Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt);
 376
 377         cs->hw.hfcsx.int_m1 = HFCSX_INTS_DTRANS | HFCSX_INTS_DREC |
 378             HFCSX_INTS_L1STATE | HFCSX_INTS_TIMER;
 379         Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
 380
 381         /* Clear already pending ints */
 382         if (Read_hfc(cs, HFCSX_INT_S1));
 383
 384         Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 2);      /* HFC ST 2 */
 385         udelay(10);
 386         Write_hfc(cs, HFCSX_STATES, 2); /* HFC ST 2 */
 387         cs->hw.hfcsx.mst_m = HFCSX_MASTER;      /* HFC Master Mode */
 388
 389         Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
 390         cs->hw.hfcsx.sctrl = 0x40;      /* set tx_lo mode, error in datasheet ! */
 391         Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl);
 392         cs->hw.hfcsx.sctrl_r = 0;
 393         Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r);
 394
 395         /* Init GCI/IOM2 in master mode */
 396         /* Slots 0 and 1 are set for B-chan 1 and 2 */
 397         /* D- and monitor/CI channel are not enabled */
 398         /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */
 399         /* STIO2 is used as data input, B1+B2 from IOM->ST */
 400         /* ST B-channel send disabled -> continous 1s */
 401         /* The IOM slots are always enabled */
 402         cs->hw.hfcsx.conn = 0x36;       /* set data flow directions */
 403         Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
 404         Write_hfc(cs, HFCSX_B1_SSL, 0x80);      /* B1-Slot 0 STIO1 out enabled */
 405         Write_hfc(cs, HFCSX_B2_SSL, 0x81);      /* B2-Slot 1 STIO1 out enabled */
 406         Write_hfc(cs, HFCSX_B1_RSL, 0x80);      /* B1-Slot 0 STIO2 in enabled */
 407         Write_hfc(cs, HFCSX_B2_RSL, 0x81);      /* B2-Slot 1 STIO2 in enabled */
 408
 409         /* Finally enable IRQ output */
 410         cs->hw.hfcsx.int_m2 = HFCSX_IRQ_ENABLE;
 411         Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
 412         if (Read_hfc(cs, HFCSX_INT_S2));
 413 }
 414
 415 /***************************************************/
 416 /* Timer function called when kernel timer expires */
 417 /***************************************************/
 418 static void
 419 hfcsx_Timer(struct IsdnCardState *cs)
 420 {
 421         cs->hw.hfcsx.timer.expires = jiffies + 75;
 422         /* WD RESET */
 423 /*      WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcsx.ctmt | 0x80);
 424    add_timer(&cs->hw.hfcsx.timer);
 425  */
 426 }
 427
 428 /************************************************/
 429 /* select a b-channel entry matching and active */
 430 /************************************************/
 431 static
 432 struct BCState *
 433 Sel_BCS(struct IsdnCardState *cs, int channel)
 434 {
 435         if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
 436                 return (&cs->bcs[0]);
 437         else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
 438                 return (&cs->bcs[1]);
 439         else
 440                 return (NULL);
 441 }
 442
 443 /*******************************/
 444 /* D-channel receive procedure */
 445 /*******************************/
 446 static
 447 int
 448 receive_dmsg(struct IsdnCardState *cs)
 449 {
 450         struct sk_buff *skb;
 451         int count = 5;
 452
 453         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 454                 debugl1(cs, "rec_dmsg blocked");
 455                 return (1);
 456         }
 457
 458         do {
 459           skb = read_fifo(cs, HFCSX_SEL_D_RX, 0);
 460           if (skb) {
 461             skb_queue_tail(&cs->rq, skb);
 462             schedule_event(cs, D_RCVBUFREADY);
 463           }
 464         } while (--count && skb);
 465
 466         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 467         return (1);
 468 }
 469
 470 /**********************************/
 471 /* B-channel main receive routine */
 472 /**********************************/
 473 static void
 474 main_rec_hfcsx(struct BCState *bcs)
 475 {
 476         struct IsdnCardState *cs = bcs->cs;
 477         int count = 5;
 478         struct sk_buff *skb;
 479
 480       Begin:
 481         count--;
 482         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 483                 debugl1(cs, "rec_data %d blocked", bcs->channel);
 484                 return;
 485         }
 486         skb = read_fifo(cs, ((bcs->channel) && (!cs->hw.hfcsx.bswapped)) ?
 487                         HFCSX_SEL_B2_RX : HFCSX_SEL_B1_RX,
 488                         (bcs->mode == L1_MODE_TRANS) ?
 489                         HFCSX_BTRANS_THRESHOLD : 0);
 490
 491         if (skb) {
 492           skb_queue_tail(&bcs->rqueue, skb);
 493           schedule_event(bcs, B_RCVBUFREADY);
 494         }
 495
 496         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 497         if (count && skb)
 498                 goto Begin;
 499         return;
 500 }
 501
 502 /**************************/
 503 /* D-channel send routine */
 504 /**************************/
 505 static void
 506 hfcsx_fill_dfifo(struct IsdnCardState *cs)
 507 {
 508         if (!cs->tx_skb)
 509                 return;
 510         if (cs->tx_skb->len <= 0)
 511                 return;
 512
 513         if (write_fifo(cs, cs->tx_skb, HFCSX_SEL_D_TX, 0)) {
 514           dev_kfree_skb_any(cs->tx_skb);
 515           cs->tx_skb = NULL;
 516         }
 517         return;
 518 }
 519
 520 /**************************/
 521 /* B-channel send routine */
 522 /**************************/
 523 static void
 524 hfcsx_fill_fifo(struct BCState *bcs)
 525 {
 526         struct IsdnCardState *cs = bcs->cs;
 527
 528         if (!bcs->tx_skb)
 529                 return;
 530         if (bcs->tx_skb->len <= 0)
 531                 return;
 532
 533         if (write_fifo(cs, bcs->tx_skb,
 534                        ((bcs->channel) && (!cs->hw.hfcsx.bswapped)) ?
 535                        HFCSX_SEL_B2_TX : HFCSX_SEL_B1_TX,
 536                        (bcs->mode == L1_MODE_TRANS) ?
 537                        HFCSX_BTRANS_THRESHOLD : 0)) {
 538
 539           bcs->tx_cnt -= bcs->tx_skb->len;
 540           if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 541                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 542                 u_long  flags;
 543                 spin_lock_irqsave(&bcs->aclock, flags);
 544                 bcs->ackcnt += bcs->tx_skb->len;
 545                 spin_unlock_irqrestore(&bcs->aclock, flags);
 546                 schedule_event(bcs, B_ACKPENDING);
 547           }
 548           dev_kfree_skb_any(bcs->tx_skb);
 549           bcs->tx_skb = NULL;
 550           test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 551         }
 552 }
 553
 554 /**********************************************/
 555 /* D-channel l1 state call for leased NT-mode */
 556 /**********************************************/
 557 static void
 558 dch_nt_l2l1(struct PStack *st, int pr, void *arg)
 559 {
 560         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
 561
 562         switch (pr) {
 563                 case (PH_DATA | REQUEST):
 564                 case (PH_PULL | REQUEST):
 565                 case (PH_PULL | INDICATION):
 566                         st->l1.l1hw(st, pr, arg);
 567                         break;
 568                 case (PH_ACTIVATE | REQUEST):
 569                         st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
 570                         break;
 571                 case (PH_TESTLOOP | REQUEST):
 572                         if (1 & (long) arg)
 573                                 debugl1(cs, "PH_TEST_LOOP B1");
 574                         if (2 & (long) arg)
 575                                 debugl1(cs, "PH_TEST_LOOP B2");
 576                         if (!(3 & (long) arg))
 577                                 debugl1(cs, "PH_TEST_LOOP DISABLED");
 578                         st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
 579                         break;
 580                 default:
 581                         if (cs->debug)
 582                                 debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr);
 583                         break;
 584         }
 585 }
 586
 587
 588
 589 /***********************/
 590 /* set/reset echo mode */
 591 /***********************/
 592 static int
 593 hfcsx_auxcmd(struct IsdnCardState *cs, isdn_ctrl * ic)
 594 {
 595         unsigned long flags;
 596         int i = *(unsigned int *) ic->parm.num;
 597
 598         if ((ic->arg == 98) &&
 599             (!(cs->hw.hfcsx.int_m1 & (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC + HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC)))) {
 600                 spin_lock_irqsave(&cs->lock, flags);
 601                 Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 0);      /* HFC ST G0 */
 602                 udelay(10);
 603                 cs->hw.hfcsx.sctrl |= SCTRL_MODE_NT;
 604                 Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); /* set NT-mode */
 605                 udelay(10);
 606                 Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 1);      /* HFC ST G1 */
 607                 udelay(10);
 608                 Write_hfc(cs, HFCSX_STATES, 1 | HFCSX_ACTIVATE | HFCSX_DO_ACTION);
 609                 cs->dc.hfcsx.ph_state = 1;
 610                 cs->hw.hfcsx.nt_mode = 1;
 611                 cs->hw.hfcsx.nt_timer = 0;
 612                 spin_unlock_irqrestore(&cs->lock, flags);
 613                 cs->stlist->l2.l2l1 = dch_nt_l2l1;
 614                 debugl1(cs, "NT mode activated");
 615                 return (0);
 616         }
 617         if ((cs->chanlimit > 1) || (cs->hw.hfcsx.bswapped) ||
 618             (cs->hw.hfcsx.nt_mode) || (ic->arg != 12))
 619                 return (-EINVAL);
 620
 621         if (i) {
 622                 cs->logecho = 1;
 623                 cs->hw.hfcsx.trm |= 0x20;       /* enable echo chan */
 624                 cs->hw.hfcsx.int_m1 |= HFCSX_INTS_B2REC;
 625                 /* reset Channel !!!!! */
 626         } else {
 627                 cs->logecho = 0;
 628                 cs->hw.hfcsx.trm &= ~0x20;      /* disable echo chan */
 629                 cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_B2REC;
 630         }
 631         cs->hw.hfcsx.sctrl_r &= ~SCTRL_B2_ENA;
 632         cs->hw.hfcsx.sctrl &= ~SCTRL_B2_ENA;
 633         cs->hw.hfcsx.conn |= 0x10;      /* B2-IOM -> B2-ST */
 634         cs->hw.hfcsx.ctmt &= ~2;
 635         spin_lock_irqsave(&cs->lock, flags);
 636         Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt);
 637         Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r);
 638         Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl);
 639         Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
 640         Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm);
 641         Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
 642         spin_unlock_irqrestore(&cs->lock, flags);
 643         return (0);
 644 }                               /* hfcsx_auxcmd */
 645
 646 /*****************************/
 647 /* E-channel receive routine */
 648 /*****************************/
 649 static void
 650 receive_emsg(struct IsdnCardState *cs)
 651 {
 652         int count = 5;
 653         u_char *ptr;
 654         struct sk_buff *skb;
 655
 656         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 657                 debugl1(cs, "echo_rec_data blocked");
 658                 return;
 659         }
 660         do {
 661           skb = read_fifo(cs, HFCSX_SEL_B2_RX, 0);
 662           if (skb) {
 663             if (cs->debug & DEB_DLOG_HEX) {
 664               ptr = cs->dlog;
 665               if ((skb->len) < MAX_DLOG_SPACE / 3 - 10) {
 666                 *ptr++ = 'E';
 667                 *ptr++ = 'C';
 668                 *ptr++ = 'H';
 669                 *ptr++ = 'O';
 670                 *ptr++ = ':';
 671                 ptr += QuickHex(ptr, skb->data, skb->len);
 672                 ptr--;
 673                 *ptr++ = '\n';
 674                 *ptr = 0;
 675                 HiSax_putstatus(cs, NULL, cs->dlog);
 676               } else
 677                 HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", skb->len);
 678             }
 679             dev_kfree_skb_any(skb);
 680           }
 681         } while (--count && skb);
 682
 683         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 684         return;
 685 }                               /* receive_emsg */
 686
 687
 688 /*********************/
 689 /* Interrupt handler */
 690 /*********************/
 691 static irqreturn_t
 692 hfcsx_interrupt(int intno, void *dev_id)
 693 {
 694         struct IsdnCardState *cs = dev_id;
 695         u_char exval;
 696         struct BCState *bcs;
 697         int count = 15;
 698         u_long flags;
 699         u_char val, stat;
 700
 701         if (!(cs->hw.hfcsx.int_m2 & 0x08))
 702                 return IRQ_NONE;                /* not initialised */
 703
 704         spin_lock_irqsave(&cs->lock, flags);
 705         if (HFCSX_ANYINT & (stat = Read_hfc(cs, HFCSX_STATUS))) {
 706                 val = Read_hfc(cs, HFCSX_INT_S1);
 707                 if (cs->debug & L1_DEB_ISAC)
 708                         debugl1(cs, "HFC-SX: stat(%02x) s1(%02x)", stat, val);
 709         } else {
 710                 spin_unlock_irqrestore(&cs->lock, flags);
 711                 return IRQ_NONE;
 712         }
 713         if (cs->debug & L1_DEB_ISAC)
 714                 debugl1(cs, "HFC-SX irq %x %s", val,
 715                         test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
 716                         "locked" : "unlocked");
 717         val &= cs->hw.hfcsx.int_m1;
 718         if (val & 0x40) {       /* state machine irq */
 719                 exval = Read_hfc(cs, HFCSX_STATES) & 0xf;
 720                 if (cs->debug & L1_DEB_ISAC)
 721                         debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcsx.ph_state,
 722                                 exval);
 723                 cs->dc.hfcsx.ph_state = exval;
 724                 schedule_event(cs, D_L1STATECHANGE);
 725                 val &= ~0x40;
 726         }
 727         if (val & 0x80) {       /* timer irq */
 728                 if (cs->hw.hfcsx.nt_mode) {
 729                         if ((--cs->hw.hfcsx.nt_timer) < 0)
 730                                 schedule_event(cs, D_L1STATECHANGE);
 731                 }
 732                 val &= ~0x80;
 733                 Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER);
 734         }
 735         while (val) {
 736                 if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 737                         cs->hw.hfcsx.int_s1 |= val;
 738                         spin_unlock_irqrestore(&cs->lock, flags);
 739                         return IRQ_HANDLED;
 740                 }
 741                 if (cs->hw.hfcsx.int_s1 & 0x18) {
 742                         exval = val;
 743                         val = cs->hw.hfcsx.int_s1;
 744                         cs->hw.hfcsx.int_s1 = exval;
 745                 }
 746                 if (val & 0x08) {
 747                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcsx.bswapped ? 1 : 0))) {
 748                                 if (cs->debug)
 749                                         debugl1(cs, "hfcsx spurious 0x08 IRQ");
 750                         } else
 751                                 main_rec_hfcsx(bcs);
 752                 }
 753                 if (val & 0x10) {
 754                         if (cs->logecho)
 755                                 receive_emsg(cs);
 756                         else if (!(bcs = Sel_BCS(cs, 1))) {
 757                                 if (cs->debug)
 758                                         debugl1(cs, "hfcsx spurious 0x10 IRQ");
 759                         } else
 760                                 main_rec_hfcsx(bcs);
 761                 }
 762                 if (val & 0x01) {
 763                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcsx.bswapped ? 1 : 0))) {
 764                                 if (cs->debug)
 765                                         debugl1(cs, "hfcsx spurious 0x01 IRQ");
 766                         } else {
 767                                 if (bcs->tx_skb) {
 768                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 769                                                 hfcsx_fill_fifo(bcs);
 770                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 771                                         } else
 772                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
 773                                 } else {
 774                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
 775                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 776                                                         hfcsx_fill_fifo(bcs);
 777                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 778                                                 } else
 779                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
 780                                         } else {
 781                                                 schedule_event(bcs, B_XMTBUFREADY);
 782                                         }
 783                                 }
 784                         }
 785                 }
 786                 if (val & 0x02) {
 787                         if (!(bcs = Sel_BCS(cs, 1))) {
 788                                 if (cs->debug)
 789                                         debugl1(cs, "hfcsx spurious 0x02 IRQ");
 790                         } else {
 791                                 if (bcs->tx_skb) {
 792                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 793                                                 hfcsx_fill_fifo(bcs);
 794                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 795                                         } else
 796                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
 797                                 } else {
 798                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
 799                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 800                                                         hfcsx_fill_fifo(bcs);
 801                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 802                                                 } else
 803                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
 804                                         } else {
 805                                                 schedule_event(bcs, B_XMTBUFREADY);
 806                                         }
 807                                 }
 808                         }
 809                 }
 810                 if (val & 0x20) {       /* receive dframe */
 811                         receive_dmsg(cs);
 812                 }
 813                 if (val & 0x04) {       /* dframe transmitted */
 814                         if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
 815                                 del_timer(&cs->dbusytimer);
 816                         if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
 817                                 schedule_event(cs, D_CLEARBUSY);
 818                         if (cs->tx_skb) {
 819                                 if (cs->tx_skb->len) {
 820                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 821                                                 hfcsx_fill_dfifo(cs);
 822                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 823                                         } else {
 824                                                 debugl1(cs, "hfcsx_fill_dfifo irq blocked");
 825                                         }
 826                                         goto afterXPR;
 827                                 } else {
 828                                         dev_kfree_skb_irq(cs->tx_skb);
 829                                         cs->tx_cnt = 0;
 830                                         cs->tx_skb = NULL;
 831                                 }
 832                         }
 833                         if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
 834                                 cs->tx_cnt = 0;
 835                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 836                                         hfcsx_fill_dfifo(cs);
 837                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 838                                 } else {
 839                                         debugl1(cs, "hfcsx_fill_dfifo irq blocked");
 840                                 }
 841                         } else
 842                                 schedule_event(cs, D_XMTBUFREADY);
 843                 }
 844               afterXPR:
 845                 if (cs->hw.hfcsx.int_s1 && count--) {
 846                         val = cs->hw.hfcsx.int_s1;
 847                         cs->hw.hfcsx.int_s1 = 0;
 848                         if (cs->debug & L1_DEB_ISAC)
 849                                 debugl1(cs, "HFC-SX irq %x loop %d", val, 15 - count);
 850                 } else
 851                         val = 0;
 852         }
 853         spin_unlock_irqrestore(&cs->lock, flags);
 854         return IRQ_HANDLED;
 855 }
 856
 857 /********************************************************************/
 858 /* timer callback for D-chan busy resolution. Currently no function */
 859 /********************************************************************/
 860 static void
 861 hfcsx_dbusy_timer(struct IsdnCardState *cs)
 862 {
 863 }
 864
 865 /*************************************/
 866 /* Layer 1 D-channel hardware access */
 867 /*************************************/
 868 static void
 869 HFCSX_l1hw(struct PStack *st, int pr, void *arg)
 870 {
 871         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
 872         struct sk_buff *skb = arg;
 873         u_long flags;
 874
 875         switch (pr) {
 876                 case (PH_DATA | REQUEST):
 877                         if (cs->debug & DEB_DLOG_HEX)
 878                                 LogFrame(cs, skb->data, skb->len);
 879                         if (cs->debug & DEB_DLOG_VERBOSE)
 880                                 dlogframe(cs, skb, 0);
 881                         spin_lock_irqsave(&cs->lock, flags);
 882                         if (cs->tx_skb) {
 883                                 skb_queue_tail(&cs->sq, skb);
 884 #ifdef L2FRAME_DEBUG            /* psa */
 885                                 if (cs->debug & L1_DEB_LAPD)
 886                                         Logl2Frame(cs, skb, "PH_DATA Queued", 0);
 887 #endif
 888                         } else {
 889                                 cs->tx_skb = skb;
 890                                 cs->tx_cnt = 0;
 891 #ifdef L2FRAME_DEBUG            /* psa */
 892                                 if (cs->debug & L1_DEB_LAPD)
 893                                         Logl2Frame(cs, skb, "PH_DATA", 0);
 894 #endif
 895                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 896                                         hfcsx_fill_dfifo(cs);
 897                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 898                                 } else
 899                                         debugl1(cs, "hfcsx_fill_dfifo blocked");
 900
 901                         }
 902                         spin_unlock_irqrestore(&cs->lock, flags);
 903                         break;
 904                 case (PH_PULL | INDICATION):
 905                         spin_lock_irqsave(&cs->lock, flags);
 906                         if (cs->tx_skb) {
 907                                 if (cs->debug & L1_DEB_WARN)
 908                                         debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
 909                                 skb_queue_tail(&cs->sq, skb);
 910                                 spin_unlock_irqrestore(&cs->lock, flags);
 911                                 break;
 912                         }
 913                         if (cs->debug & DEB_DLOG_HEX)
 914                                 LogFrame(cs, skb->data, skb->len);
 915                         if (cs->debug & DEB_DLOG_VERBOSE)
 916                                 dlogframe(cs, skb, 0);
 917                         cs->tx_skb = skb;
 918                         cs->tx_cnt = 0;
 919 #ifdef L2FRAME_DEBUG            /* psa */
 920                         if (cs->debug & L1_DEB_LAPD)
 921                                 Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
 922 #endif
 923                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 924                                 hfcsx_fill_dfifo(cs);
 925                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 926                         } else
 927                                 debugl1(cs, "hfcsx_fill_dfifo blocked");
 928                         spin_unlock_irqrestore(&cs->lock, flags);
 929                         break;
 930                 case (PH_PULL | REQUEST):
 931 #ifdef L2FRAME_DEBUG            /* psa */
 932                         if (cs->debug & L1_DEB_LAPD)
 933                                 debugl1(cs, "-> PH_REQUEST_PULL");
 934 #endif
 935                         if (!cs->tx_skb) {
 936                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
 937                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
 938                         } else
 939                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
 940                         break;
 941                 case (HW_RESET | REQUEST):
 942                         spin_lock_irqsave(&cs->lock, flags);
 943                         Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 3);      /* HFC ST 3 */
 944                         udelay(6);
 945                         Write_hfc(cs, HFCSX_STATES, 3); /* HFC ST 2 */
 946                         cs->hw.hfcsx.mst_m |= HFCSX_MASTER;
 947                         Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
 948                         Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION);
 949                         spin_unlock_irqrestore(&cs->lock, flags);
 950                         l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
 951                         break;
 952                 case (HW_ENABLE | REQUEST):
 953                         spin_lock_irqsave(&cs->lock, flags);
 954                         Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION);
 955                         spin_unlock_irqrestore(&cs->lock, flags);
 956                         break;
 957                 case (HW_DEACTIVATE | REQUEST):
 958                         spin_lock_irqsave(&cs->lock, flags);
 959                         cs->hw.hfcsx.mst_m &= ~HFCSX_MASTER;
 960                         Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
 961                         spin_unlock_irqrestore(&cs->lock, flags);
 962                         break;
 963                 case (HW_INFO3 | REQUEST):
 964                         spin_lock_irqsave(&cs->lock, flags);
 965                         cs->hw.hfcsx.mst_m |= HFCSX_MASTER;
 966                         Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
 967                         spin_unlock_irqrestore(&cs->lock, flags);
 968                         break;
 969                 case (HW_TESTLOOP | REQUEST):
 970                         spin_lock_irqsave(&cs->lock, flags);
 971                         switch ((long) arg) {
 972                                 case (1):
 973                                         Write_hfc(cs, HFCSX_B1_SSL, 0x80);      /* tx slot */
 974                                         Write_hfc(cs, HFCSX_B1_RSL, 0x80);      /* rx slot */
 975                                         cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~7) | 1;
 976                                         Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
 977                                         break;
 978                                 case (2):
 979                                         Write_hfc(cs, HFCSX_B2_SSL, 0x81);      /* tx slot */
 980                                         Write_hfc(cs, HFCSX_B2_RSL, 0x81);      /* rx slot */
 981                                         cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~0x38) | 0x08;
 982                                         Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
 983                                         break;
 984                                 default:
 985                                         spin_unlock_irqrestore(&cs->lock, flags);
 986                                         if (cs->debug & L1_DEB_WARN)
 987                                                 debugl1(cs, "hfcsx_l1hw loop invalid %4lx", arg);
 988                                         return;
 989                         }
 990                         cs->hw.hfcsx.trm |= 0x80;       /* enable IOM-loop */
 991                         Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm);
 992                         spin_unlock_irqrestore(&cs->lock, flags);
 993                         break;
 994                 default:
 995                         if (cs->debug & L1_DEB_WARN)
 996                                 debugl1(cs, "hfcsx_l1hw unknown pr %4x", pr);
 997                         break;
 998         }
 999 }
1000
1001 /***********************************************/
1002 /* called during init setting l1 stack pointer */
1003 /***********************************************/
1004 static void
1005 setstack_hfcsx(struct PStack *st, struct IsdnCardState *cs)
1006 {
1007         st->l1.l1hw = HFCSX_l1hw;
1008 }
1009
1010 /**************************************/
1011 /* send B-channel data if not blocked */
1012 /**************************************/
1013 static void
1014 hfcsx_send_data(struct BCState *bcs)
1015 {
1016         struct IsdnCardState *cs = bcs->cs;
1017
1018         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1019           hfcsx_fill_fifo(bcs);
1020                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1021         } else
1022                 debugl1(cs, "send_data %d blocked", bcs->channel);
1023 }
1024
1025 /***************************************************************/
1026 /* activate/deactivate hardware for selected channels and mode */
1027 /***************************************************************/
1028 static void
1029 mode_hfcsx(struct BCState *bcs, int mode, int bc)
1030 {
1031         struct IsdnCardState *cs = bcs->cs;
1032         int fifo2;
1033
1034         if (cs->debug & L1_DEB_HSCX)
1035                 debugl1(cs, "HFCSX bchannel mode %d bchan %d/%d",
1036                         mode, bc, bcs->channel);
1037         bcs->mode = mode;
1038         bcs->channel = bc;
1039         fifo2 = bc;
1040         if (cs->chanlimit > 1) {
1041                 cs->hw.hfcsx.bswapped = 0;      /* B1 and B2 normal mode */
1042                 cs->hw.hfcsx.sctrl_e &= ~0x80;
1043         } else {
1044                 if (bc) {
1045                         if (mode != L1_MODE_NULL) {
1046                                 cs->hw.hfcsx.bswapped = 1;      /* B1 and B2 exchanged */
1047                                 cs->hw.hfcsx.sctrl_e |= 0x80;
1048                         } else {
1049                                 cs->hw.hfcsx.bswapped = 0;      /* B1 and B2 normal mode */
1050                                 cs->hw.hfcsx.sctrl_e &= ~0x80;
1051                         }
1052                         fifo2 = 0;
1053                 } else {
1054                         cs->hw.hfcsx.bswapped = 0;      /* B1 and B2 normal mode */
1055                         cs->hw.hfcsx.sctrl_e &= ~0x80;
1056                 }
1057         }
1058         switch (mode) {
1059                 case (L1_MODE_NULL):
1060                         if (bc) {
1061                                 cs->hw.hfcsx.sctrl &= ~SCTRL_B2_ENA;
1062                                 cs->hw.hfcsx.sctrl_r &= ~SCTRL_B2_ENA;
1063                         } else {
1064                                 cs->hw.hfcsx.sctrl &= ~SCTRL_B1_ENA;
1065                                 cs->hw.hfcsx.sctrl_r &= ~SCTRL_B1_ENA;
1066                         }
1067                         if (fifo2) {
1068                                 cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC);
1069                         } else {
1070                                 cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC);
1071                         }
1072                         break;
1073                 case (L1_MODE_TRANS):
1074                         if (bc) {
1075                                 cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA;
1076                                 cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA;
1077                         } else {
1078                                 cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA;
1079                                 cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA;
1080                         }
1081                         if (fifo2) {
1082                                 cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC);
1083                                 cs->hw.hfcsx.ctmt |= 2;
1084                                 cs->hw.hfcsx.conn &= ~0x18;
1085                         } else {
1086                                 cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC);
1087                                 cs->hw.hfcsx.ctmt |= 1;
1088                                 cs->hw.hfcsx.conn &= ~0x03;
1089                         }
1090                         break;
1091                 case (L1_MODE_HDLC):
1092                         if (bc) {
1093                                 cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA;
1094                                 cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA;
1095                         } else {
1096                                 cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA;
1097                                 cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA;
1098                         }
1099                         if (fifo2) {
1100                                 cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC);
1101                                 cs->hw.hfcsx.ctmt &= ~2;
1102                                 cs->hw.hfcsx.conn &= ~0x18;
1103                         } else {
1104                                 cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC);
1105                                 cs->hw.hfcsx.ctmt &= ~1;
1106                                 cs->hw.hfcsx.conn &= ~0x03;
1107                         }
1108                         break;
1109                 case (L1_MODE_EXTRN):
1110                         if (bc) {
1111                                 cs->hw.hfcsx.conn |= 0x10;
1112                                 cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA;
1113                                 cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA;
1114                                 cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC);
1115                         } else {
1116                                 cs->hw.hfcsx.conn |= 0x02;
1117                                 cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA;
1118                                 cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA;
1119                                 cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC);
1120                         }
1121                         break;
1122         }
1123         Write_hfc(cs, HFCSX_SCTRL_E, cs->hw.hfcsx.sctrl_e);
1124         Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
1125         Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl);
1126         Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r);
1127         Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt);
1128         Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
1129         if (mode != L1_MODE_EXTRN) {
1130           reset_fifo(cs, fifo2 ? HFCSX_SEL_B2_RX : HFCSX_SEL_B1_RX);
1131           reset_fifo(cs, fifo2 ? HFCSX_SEL_B2_TX : HFCSX_SEL_B1_TX);
1132         }
1133 }
1134
1135 /******************************/
1136 /* Layer2 -> Layer 1 Transfer */
1137 /******************************/
1138 static void
1139 hfcsx_l2l1(struct PStack *st, int pr, void *arg)
1140 {
1141         struct BCState *bcs = st->l1.bcs;
1142         struct sk_buff *skb = arg;
1143         u_long flags;
1144
1145         switch (pr) {
1146                 case (PH_DATA | REQUEST):
1147                         spin_lock_irqsave(&bcs->cs->lock, flags);
1148                         if (bcs->tx_skb) {
1149                                 skb_queue_tail(&bcs->squeue, skb);
1150                         } else {
1151                                 bcs->tx_skb = skb;
1152 //                              test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1153                                 bcs->cs->BC_Send_Data(bcs);
1154                         }
1155                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1156                         break;
1157                 case (PH_PULL | INDICATION):
1158                         spin_lock_irqsave(&bcs->cs->lock, flags);
1159                         if (bcs->tx_skb) {
1160                                 printk(KERN_WARNING "hfc_l2l1: this shouldn't happen\n");
1161                         } else {
1162 //                              test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1163                                 bcs->tx_skb = skb;
1164                                 bcs->cs->BC_Send_Data(bcs);
1165                         }
1166                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1167                         break;
1168                 case (PH_PULL | REQUEST):
1169                         if (!bcs->tx_skb) {
1170                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1171                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1172                         } else
1173                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1174                         break;
1175                 case (PH_ACTIVATE | REQUEST):
1176                         spin_lock_irqsave(&bcs->cs->lock, flags);
1177                         test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
1178                         mode_hfcsx(bcs, st->l1.mode, st->l1.bc);
1179                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1180                         l1_msg_b(st, pr, arg);
1181                         break;
1182                 case (PH_DEACTIVATE | REQUEST):
1183                         l1_msg_b(st, pr, arg);
1184                         break;
1185                 case (PH_DEACTIVATE | CONFIRM):
1186                         spin_lock_irqsave(&bcs->cs->lock, flags);
1187                         test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
1188                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1189                         mode_hfcsx(bcs, 0, st->l1.bc);
1190                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1191                         st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
1192                         break;
1193         }
1194 }
1195
1196 /******************************************/
1197 /* deactivate B-channel access and queues */
1198 /******************************************/
1199 static void
1200 close_hfcsx(struct BCState *bcs)
1201 {
1202         mode_hfcsx(bcs, 0, bcs->channel);
1203         if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
1204                 skb_queue_purge(&bcs->rqueue);
1205                 skb_queue_purge(&bcs->squeue);
1206                 if (bcs->tx_skb) {
1207                         dev_kfree_skb_any(bcs->tx_skb);
1208                         bcs->tx_skb = NULL;
1209                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1210                 }
1211         }
1212 }
1213
1214 /*************************************/
1215 /* init B-channel queues and control */
1216 /*************************************/
1217 static int
1218 open_hfcsxstate(struct IsdnCardState *cs, struct BCState *bcs)
1219 {
1220         if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
1221                 skb_queue_head_init(&bcs->rqueue);
1222                 skb_queue_head_init(&bcs->squeue);
1223         }
1224         bcs->tx_skb = NULL;
1225         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1226         bcs->event = 0;
1227         bcs->tx_cnt = 0;
1228         return (0);
1229 }
1230
1231 /*********************************/
1232 /* inits the stack for B-channel */
1233 /*********************************/
1234 static int
1235 setstack_2b(struct PStack *st, struct BCState *bcs)
1236 {
1237         bcs->channel = st->l1.bc;
1238         if (open_hfcsxstate(st->l1.hardware, bcs))
1239                 return (-1);
1240         st->l1.bcs = bcs;
1241         st->l2.l2l1 = hfcsx_l2l1;
1242         setstack_manager(st);
1243         bcs->st = st;
1244         setstack_l1_B(st);
1245         return (0);
1246 }
1247
1248 /***************************/
1249 /* handle L1 state changes */
1250 /***************************/
1251 static void
1252 hfcsx_bh(struct work_struct *work)
1253 {
1254         struct IsdnCardState *cs =
1255                 container_of(work, struct IsdnCardState, tqueue);
1256         u_long flags;
1257
1258         if (!cs)
1259                 return;
1260         if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
1261                 if (!cs->hw.hfcsx.nt_mode)
1262                         switch (cs->dc.hfcsx.ph_state) {
1263                                 case (0):
1264                                         l1_msg(cs, HW_RESET | INDICATION, NULL);
1265                                         break;
1266                                 case (3):
1267                                         l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
1268                                         break;
1269                                 case (8):
1270                                         l1_msg(cs, HW_RSYNC | INDICATION, NULL);
1271                                         break;
1272                                 case (6):
1273                                         l1_msg(cs, HW_INFO2 | INDICATION, NULL);
1274                                         break;
1275                                 case (7):
1276                                         l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
1277                                         break;
1278                                 default:
1279                                         break;
1280                 } else {
1281                         switch (cs->dc.hfcsx.ph_state) {
1282                                 case (2):
1283                                         spin_lock_irqsave(&cs->lock, flags);
1284                                         if (cs->hw.hfcsx.nt_timer < 0) {
1285                                                 cs->hw.hfcsx.nt_timer = 0;
1286                                                 cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER;
1287                                                 Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
1288                                                 /* Clear already pending ints */
1289                                                 if (Read_hfc(cs, HFCSX_INT_S1));
1290
1291                                                 Write_hfc(cs, HFCSX_STATES, 4 | HFCSX_LOAD_STATE);
1292                                                 udelay(10);
1293                                                 Write_hfc(cs, HFCSX_STATES, 4);
1294                                                 cs->dc.hfcsx.ph_state = 4;
1295                                         } else {
1296                                                 cs->hw.hfcsx.int_m1 |= HFCSX_INTS_TIMER;
1297                                                 Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
1298                                                 cs->hw.hfcsx.ctmt &= ~HFCSX_AUTO_TIMER;
1299                                                 cs->hw.hfcsx.ctmt |= HFCSX_TIM3_125;
1300                                                 Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER);
1301                                                 Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER);
1302                                                 cs->hw.hfcsx.nt_timer = NT_T1_COUNT;
1303                                                 Write_hfc(cs, HFCSX_STATES, 2 | HFCSX_NT_G2_G3);        /* allow G2 -> G3 transition */
1304                                         }
1305                                         spin_unlock_irqrestore(&cs->lock, flags);
1306                                         break;
1307                                 case (1):
1308                                 case (3):
1309                                 case (4):
1310                                         spin_lock_irqsave(&cs->lock, flags);
1311                                         cs->hw.hfcsx.nt_timer = 0;
1312                                         cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER;
1313                                         Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
1314                                         spin_unlock_irqrestore(&cs->lock, flags);
1315                                         break;
1316                                 default:
1317                                         break;
1318                         }
1319                 }
1320         }
1321         if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
1322                 DChannel_proc_rcv(cs);
1323         if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
1324                 DChannel_proc_xmt(cs);
1325 }
1326
1327
1328 /********************************/
1329 /* called for card init message */
1330 /********************************/
1331 static void inithfcsx(struct IsdnCardState *cs)
1332 {
1333         cs->setstack_d = setstack_hfcsx;
1334         cs->BC_Send_Data = &hfcsx_send_data;
1335         cs->bcs[0].BC_SetStack = setstack_2b;
1336         cs->bcs[1].BC_SetStack = setstack_2b;
1337         cs->bcs[0].BC_Close = close_hfcsx;
1338         cs->bcs[1].BC_Close = close_hfcsx;
1339         mode_hfcsx(cs->bcs, 0, 0);
1340         mode_hfcsx(cs->bcs + 1, 0, 1);
1341 }
1342
1343
1344
1345 /*******************************************/
1346 /* handle card messages from control layer */
1347 /*******************************************/
1348 static int
1349 hfcsx_card_msg(struct IsdnCardState *cs, int mt, void *arg)
1350 {
1351         u_long flags;
1352
1353         if (cs->debug & L1_DEB_ISAC)
1354                 debugl1(cs, "HFCSX: card_msg %x", mt);
1355         switch (mt) {
1356                 case CARD_RESET:
1357                         spin_lock_irqsave(&cs->lock, flags);
1358                         reset_hfcsx(cs);
1359                         spin_unlock_irqrestore(&cs->lock, flags);
1360                         return (0);
1361                 case CARD_RELEASE:
1362                         release_io_hfcsx(cs);
1363                         return (0);
1364                 case CARD_INIT:
1365                         spin_lock_irqsave(&cs->lock, flags);
1366                         inithfcsx(cs);
1367                         spin_unlock_irqrestore(&cs->lock, flags);
1368                         msleep(80);                             /* Timeout 80ms */
1369                         /* now switch timer interrupt off */
1370                         spin_lock_irqsave(&cs->lock, flags);
1371                         cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER;
1372                         Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
1373                         /* reinit mode reg */
1374                         Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
1375                         spin_unlock_irqrestore(&cs->lock, flags);
1376                         return (0);
1377                 case CARD_TEST:
1378                         return (0);
1379         }
1380         return (0);
1381 }
1382
1383 #ifdef __ISAPNP__
1384 static struct isapnp_device_id hfc_ids[] __devinitdata = {
1385         { ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2620),
1386           ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2620),
1387           (unsigned long) "Teles 16.3c2" },
1388         { 0, }
1389 };
1390
1391 static struct isapnp_device_id *ipid __devinitdata = &hfc_ids[0];
1392 static struct pnp_card *pnp_c __devinitdata = NULL;
1393 #endif
1394
1395 int __devinit
1396 setup_hfcsx(struct IsdnCard *card)
1397 {
1398         struct IsdnCardState *cs = card->cs;
1399         char tmp[64];
1400
1401         strcpy(tmp, hfcsx_revision);
1402         printk(KERN_INFO "HiSax: HFC-SX driver Rev. %s\n", HiSax_getrev(tmp));
1403 #ifdef __ISAPNP__
1404         if (!card->para[1] && isapnp_present()) {
1405                 struct pnp_dev *pnp_d;
1406                 while(ipid->card_vendor) {
1407                         if ((pnp_c = pnp_find_card(ipid->card_vendor,
1408                                 ipid->card_device, pnp_c))) {
1409                                 pnp_d = NULL;
1410                                 if ((pnp_d = pnp_find_dev(pnp_c,
1411                                         ipid->vendor, ipid->function, pnp_d))) {
1412                                         int err;
1413
1414                                         printk(KERN_INFO "HiSax: %s detected\n",
1415                                                 (char *)ipid->driver_data);
1416                                         pnp_disable_dev(pnp_d);
1417                                         err = pnp_activate_dev(pnp_d);
1418                                         if (err<0) {
1419                                                 printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n",
1420                                                         __func__, err);
1421                                                 return(0);
1422                                         }
1423                                         card->para[1] = pnp_port_start(pnp_d, 0);
1424                                         card->para[0] = pnp_irq(pnp_d, 0);
1425                                         if (!card->para[0] || !card->para[1]) {
1426                                                 printk(KERN_ERR "HFC PnP:some resources are missing %ld/%lx\n",
1427                                                         card->para[0], card->para[1]);
1428                                                 pnp_disable_dev(pnp_d);
1429                                                 return(0);
1430                                         }
1431                                         break;
1432                                 } else {
1433                                         printk(KERN_ERR "HFC PnP: PnP error card found, no device\n");
1434                                 }
1435                         }
1436                         ipid++;
1437                         pnp_c = NULL;
1438                 }
1439                 if (!ipid->card_vendor) {
1440                         printk(KERN_INFO "HFC PnP: no ISAPnP card found\n");
1441                         return(0);
1442                 }
1443         }
1444 #endif
1445         cs->hw.hfcsx.base = card->para[1] & 0xfffe;
1446         cs->irq = card->para[0];
1447         cs->hw.hfcsx.int_s1 = 0;
1448         cs->dc.hfcsx.ph_state = 0;
1449         cs->hw.hfcsx.fifo = 255;
1450         if ((cs->typ == ISDN_CTYPE_HFC_SX) ||
1451             (cs->typ == ISDN_CTYPE_HFC_SP_PCMCIA)) {
1452                 if ((!cs->hw.hfcsx.base) || !request_region(cs->hw.hfcsx.base, 2, "HFCSX isdn")) {
1453                   printk(KERN_WARNING
1454                          "HiSax: HFC-SX io-base %#lx already in use\n",
1455                           cs->hw.hfcsx.base);
1456                   return(0);
1457                 }
1458                 byteout(cs->hw.hfcsx.base, cs->hw.hfcsx.base & 0xFF);
1459                 byteout(cs->hw.hfcsx.base + 1,
1460                         ((cs->hw.hfcsx.base >> 8) & 3) | 0x54);
1461                 udelay(10);
1462                 cs->hw.hfcsx.chip = Read_hfc(cs,HFCSX_CHIP_ID);
1463                 switch (cs->hw.hfcsx.chip >> 4) {
1464                   case 1:
1465                     tmp[0] ='+';
1466                     break;
1467                   case 9:
1468                     tmp[0] ='P';
1469                     break;
1470                   default:
1471                     printk(KERN_WARNING
1472                            "HFC-SX: invalid chip id 0x%x\n",
1473                            cs->hw.hfcsx.chip >> 4);
1474                     release_region(cs->hw.hfcsx.base, 2);
1475                     return(0);
1476                 }
1477                 if (!ccd_sp_irqtab[cs->irq & 0xF]) {
1478                   printk(KERN_WARNING
1479                          "HFC_SX: invalid irq %d specified\n",cs->irq & 0xF);
1480                   release_region(cs->hw.hfcsx.base, 2);
1481                   return(0);
1482                 }
1483                 if (!(cs->hw.hfcsx.extra = (void *)
1484                       kmalloc(sizeof(struct hfcsx_extra), GFP_ATOMIC))) {
1485                   release_region(cs->hw.hfcsx.base, 2);
1486                   printk(KERN_WARNING "HFC-SX: unable to allocate memory\n");
1487                   return(0);
1488                 }
1489                 printk(KERN_INFO "HFC-S%c chip detected at base 0x%x IRQ %d HZ %d\n",
1490                         tmp[0], (u_int) cs->hw.hfcsx.base, cs->irq, HZ);
1491                 cs->hw.hfcsx.int_m2 = 0;        /* disable alle interrupts */
1492                 cs->hw.hfcsx.int_m1 = 0;
1493                 Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1);
1494                 Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
1495         } else
1496                 return (0);     /* no valid card type */
1497
1498         cs->dbusytimer.function = (void *) hfcsx_dbusy_timer;
1499         cs->dbusytimer.data = (long) cs;
1500         init_timer(&cs->dbusytimer);
1501         INIT_WORK(&cs->tqueue, hfcsx_bh);
1502         cs->readisac = NULL;
1503         cs->writeisac = NULL;
1504         cs->readisacfifo = NULL;
1505         cs->writeisacfifo = NULL;
1506         cs->BC_Read_Reg = NULL;
1507         cs->BC_Write_Reg = NULL;
1508         cs->irq_func = &hfcsx_interrupt;
1509
1510         cs->hw.hfcsx.timer.function = (void *) hfcsx_Timer;
1511         cs->hw.hfcsx.timer.data = (long) cs;
1512         cs->hw.hfcsx.b_fifo_size = 0; /* fifo size still unknown */
1513         cs->hw.hfcsx.cirm = ccd_sp_irqtab[cs->irq & 0xF]; /* RAM not evaluated */
1514         init_timer(&cs->hw.hfcsx.timer);
1515
1516         reset_hfcsx(cs);
1517         cs->cardmsg = &hfcsx_card_msg;
1518         cs->auxcmd = &hfcsx_auxcmd;
1519         return (1);
1520 }