drivers/isdn/hisax/hfc_pci.c

   1 /* $Id: hfc_pci.c,v 1.48.2.4 2004/02/11 13:21:33 keil Exp $
   2  *
   3  * low level driver for CCD's hfc-pci based cards
   4  *
   5  * Author       Werner Cornelius
   6  *              based on existing driver for CCD hfc ISA cards
   7  * Copyright    by Werner Cornelius  <werner@isdn4linux.de>
   8  *              by Karsten Keil      <keil@isdn4linux.de>
   9  *
  10  * This software may be used and distributed according to the terms
  11  * of the GNU General Public License, incorporated herein by reference.
  12  *
  13  * For changes and modifications please read
  14  * Documentation/isdn/HiSax.cert
  15  *
  16  */
  17
  18 #include <linux/init.h>
  19 #include "hisax.h"
  20 #include "hfc_pci.h"
  21 #include "isdnl1.h"
  22 #include <linux/pci.h>
  23 #include <linux/interrupt.h>
  24
  25 static const char *hfcpci_revision = "$Revision: 1.48.2.4 $";
  26
  27 /* table entry in the PCI devices list */
  28 typedef struct {
  29         int vendor_id;
  30         int device_id;
  31         char *vendor_name;
  32         char *card_name;
  33 } PCI_ENTRY;
  34
  35 #define NT_T1_COUNT     20      /* number of 3.125ms interrupts for G2 timeout */
  36 #define CLKDEL_TE       0x0e    /* CLKDEL in TE mode */
  37 #define CLKDEL_NT       0x6c    /* CLKDEL in NT mode */
  38
  39 static const PCI_ENTRY id_list[] =
  40 {
  41         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_2BD0, "CCD/Billion/Asuscom", "2BD0"},
  42         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B000, "Billion", "B000"},
  43         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B006, "Billion", "B006"},
  44         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B007, "Billion", "B007"},
  45         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B008, "Billion", "B008"},
  46         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B009, "Billion", "B009"},
  47         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00A, "Billion", "B00A"},
  48         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00B, "Billion", "B00B"},
  49         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00C, "Billion", "B00C"},
  50         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B100, "Seyeon", "B100"},
  51         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B700, "Primux II S0", "B700"},
  52         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B701, "Primux II S0 NT", "B701"},
  53         {PCI_VENDOR_ID_ABOCOM, PCI_DEVICE_ID_ABOCOM_2BD1, "Abocom/Magitek", "2BD1"},
  54         {PCI_VENDOR_ID_ASUSTEK, PCI_DEVICE_ID_ASUSTEK_0675, "Asuscom/Askey", "675"},
  55         {PCI_VENDOR_ID_BERKOM, PCI_DEVICE_ID_BERKOM_T_CONCEPT, "German telekom", "T-Concept"},
  56         {PCI_VENDOR_ID_BERKOM, PCI_DEVICE_ID_BERKOM_A1T, "German telekom", "A1T"},
  57         {PCI_VENDOR_ID_ANIGMA, PCI_DEVICE_ID_ANIGMA_MC145575, "Motorola MC145575", "MC145575"},
  58         {PCI_VENDOR_ID_ZOLTRIX, PCI_DEVICE_ID_ZOLTRIX_2BD0, "Zoltrix", "2BD0"},
  59         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_IOM2_E,"Digi International", "Digi DataFire Micro V IOM2 (Europe)"},
  60         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_E,"Digi International", "Digi DataFire Micro V (Europe)"},
  61         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_IOM2_A,"Digi International", "Digi DataFire Micro V IOM2 (North America)"},
  62         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_A,"Digi International", "Digi DataFire Micro V (North America)"},
  63         {PCI_VENDOR_ID_SITECOM, PCI_DEVICE_ID_SITECOM_DC105V2, "Sitecom Europe", "DC-105 ISDN PCI"},
  64         {0, 0, NULL, NULL},
  65 };
  66
  67
  68 /******************************************/
  69 /* free hardware resources used by driver */
  70 /******************************************/
  71 static void
  72 release_io_hfcpci(struct IsdnCardState *cs)
  73 {
  74         printk(KERN_INFO "HiSax: release hfcpci at %p\n",
  75                 cs->hw.hfcpci.pci_io);
  76         cs->hw.hfcpci.int_m2 = 0;                                       /* interrupt output off ! */
  77         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  78         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);                       /* Reset On */
  79         mdelay(10);
  80         Write_hfc(cs, HFCPCI_CIRM, 0);                                  /* Reset Off */
  81         mdelay(10);
  82         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  83         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, 0);       /* disable memory mapped ports + busmaster */
  84         del_timer(&cs->hw.hfcpci.timer);
  85         kfree(cs->hw.hfcpci.share_start);
  86         cs->hw.hfcpci.share_start = NULL;
  87         iounmap((void *)cs->hw.hfcpci.pci_io);
  88 }
  89
  90 /********************************************************************************/
  91 /* function called to reset the HFC PCI chip. A complete software reset of chip */
  92 /* and fifos is done.                                                           */
  93 /********************************************************************************/
  94 static void
  95 reset_hfcpci(struct IsdnCardState *cs)
  96 {
  97         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
  98         cs->hw.hfcpci.int_m2 = 0;       /* interrupt output off ! */
  99         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 100
 101         printk(KERN_INFO "HFC_PCI: resetting card\n");
 102         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO + PCI_ENA_MASTER);  /* enable memory ports + busmaster */
 103         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);       /* Reset On */
 104         mdelay(10);
 105         Write_hfc(cs, HFCPCI_CIRM, 0);  /* Reset Off */
 106         mdelay(10);
 107         if (Read_hfc(cs, HFCPCI_STATUS) & 2)
 108                 printk(KERN_WARNING "HFC-PCI init bit busy\n");
 109
 110         cs->hw.hfcpci.fifo_en = 0x30;   /* only D fifos enabled */
 111         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 112
 113         cs->hw.hfcpci.trm = 0 + HFCPCI_BTRANS_THRESMASK;        /* no echo connect , threshold */
 114         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 115
 116         Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_TE); /* ST-Bit delay for TE-Mode */
 117         cs->hw.hfcpci.sctrl_e = HFCPCI_AUTO_AWAKE;
 118         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);   /* S/T Auto awake */
 119         cs->hw.hfcpci.bswapped = 0;     /* no exchange */
 120         cs->hw.hfcpci.nt_mode = 0;      /* we are in TE mode */
 121         cs->hw.hfcpci.ctmt = HFCPCI_TIM3_125 | HFCPCI_AUTO_TIMER;
 122         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 123
 124         cs->hw.hfcpci.int_m1 = HFCPCI_INTS_DTRANS | HFCPCI_INTS_DREC |
 125             HFCPCI_INTS_L1STATE | HFCPCI_INTS_TIMER;
 126         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 127
 128         /* Clear already pending ints */
 129         if (Read_hfc(cs, HFCPCI_INT_S1));
 130
 131         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 2);    /* HFC ST 2 */
 132         udelay(10);
 133         Write_hfc(cs, HFCPCI_STATES, 2);        /* HFC ST 2 */
 134         cs->hw.hfcpci.mst_m = HFCPCI_MASTER;    /* HFC Master Mode */
 135
 136         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
 137         cs->hw.hfcpci.sctrl = 0x40;     /* set tx_lo mode, error in datasheet ! */
 138         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 139         cs->hw.hfcpci.sctrl_r = 0;
 140         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 141
 142         /* Init GCI/IOM2 in master mode */
 143         /* Slots 0 and 1 are set for B-chan 1 and 2 */
 144         /* D- and monitor/CI channel are not enabled */
 145         /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */
 146         /* STIO2 is used as data input, B1+B2 from IOM->ST */
 147         /* ST B-channel send disabled -> continous 1s */
 148         /* The IOM slots are always enabled */
 149         cs->hw.hfcpci.conn = 0x36;      /* set data flow directions */
 150         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 151         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* B1-Slot 0 STIO1 out enabled */
 152         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* B2-Slot 1 STIO1 out enabled */
 153         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* B1-Slot 0 STIO2 in enabled */
 154         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* B2-Slot 1 STIO2 in enabled */
 155
 156         /* Finally enable IRQ output */
 157         cs->hw.hfcpci.int_m2 = HFCPCI_IRQ_ENABLE;
 158         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 159         if (Read_hfc(cs, HFCPCI_INT_S1));
 160 }
 161
 162 /***************************************************/
 163 /* Timer function called when kernel timer expires */
 164 /***************************************************/
 165 static void
 166 hfcpci_Timer(struct IsdnCardState *cs)
 167 {
 168         cs->hw.hfcpci.timer.expires = jiffies + 75;
 169         /* WD RESET */
 170 /*      WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcpci.ctmt | 0x80);
 171    add_timer(&cs->hw.hfcpci.timer);
 172  */
 173 }
 174
 175
 176 /*********************************/
 177 /* schedule a new D-channel task */
 178 /*********************************/
 179 static void
 180 sched_event_D_pci(struct IsdnCardState *cs, int event)
 181 {
 182         test_and_set_bit(event, &cs->event);
 183         schedule_work(&cs->tqueue);
 184 }
 185
 186 /*********************************/
 187 /* schedule a new b_channel task */
 188 /*********************************/
 189 static void
 190 hfcpci_sched_event(struct BCState *bcs, int event)
 191 {
 192         test_and_set_bit(event, &bcs->event);
 193         schedule_work(&bcs->tqueue);
 194 }
 195
 196 /************************************************/
 197 /* select a b-channel entry matching and active */
 198 /************************************************/
 199 static
 200 struct BCState *
 201 Sel_BCS(struct IsdnCardState *cs, int channel)
 202 {
 203         if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
 204                 return (&cs->bcs[0]);
 205         else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
 206                 return (&cs->bcs[1]);
 207         else
 208                 return (NULL);
 209 }
 210
 211 /***************************************/
 212 /* clear the desired B-channel rx fifo */
 213 /***************************************/
 214 static void hfcpci_clear_fifo_rx(struct IsdnCardState *cs, int fifo)
 215 {       u_char fifo_state;
 216         bzfifo_type *bzr;
 217
 218         if (fifo) {
 219                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 220                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2RX;
 221         } else {
 222                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 223                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1RX;
 224         }
 225         if (fifo_state)
 226                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 227         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 228         cs->hw.hfcpci.last_bfifo_cnt[fifo] = 0;
 229         bzr->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 230         bzr->za[MAX_B_FRAMES].z2 = bzr->za[MAX_B_FRAMES].z1;
 231         bzr->f1 = MAX_B_FRAMES;
 232         bzr->f2 = bzr->f1;      /* init F pointers to remain constant */
 233         if (fifo_state)
 234                 cs->hw.hfcpci.fifo_en |= fifo_state;
 235         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 236 }
 237
 238 /***************************************/
 239 /* clear the desired B-channel tx fifo */
 240 /***************************************/
 241 static void hfcpci_clear_fifo_tx(struct IsdnCardState *cs, int fifo)
 242 {       u_char fifo_state;
 243         bzfifo_type *bzt;
 244
 245         if (fifo) {
 246                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 247                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2TX;
 248         } else {
 249                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 250                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1TX;
 251         }
 252         if (fifo_state)
 253                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 254         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 255         bzt->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 256         bzt->za[MAX_B_FRAMES].z2 = bzt->za[MAX_B_FRAMES].z1;
 257         bzt->f1 = MAX_B_FRAMES;
 258         bzt->f2 = bzt->f1;      /* init F pointers to remain constant */
 259         if (fifo_state)
 260                 cs->hw.hfcpci.fifo_en |= fifo_state;
 261         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 262 }
 263
 264 /*********************************************/
 265 /* read a complete B-frame out of the buffer */
 266 /*********************************************/
 267 static struct sk_buff
 268 *
 269 hfcpci_empty_fifo(struct BCState *bcs, bzfifo_type * bz, u_char * bdata, int count)
 270 {
 271         u_char *ptr, *ptr1, new_f2;
 272         struct sk_buff *skb;
 273         struct IsdnCardState *cs = bcs->cs;
 274         int total, maxlen, new_z2;
 275         z_type *zp;
 276
 277         if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
 278                 debugl1(cs, "hfcpci_empty_fifo");
 279         zp = &bz->za[bz->f2];   /* point to Z-Regs */
 280         new_z2 = zp->z2 + count;        /* new position in fifo */
 281         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 282                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 283         new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 284         if ((count > HSCX_BUFMAX + 3) || (count < 4) ||
 285             (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 286                 if (cs->debug & L1_DEB_WARN)
 287                         debugl1(cs, "hfcpci_empty_fifo: incoming packet invalid length %d or crc", count);
 288 #ifdef ERROR_STATISTIC
 289                 bcs->err_inv++;
 290 #endif
 291                 bz->za[new_f2].z2 = new_z2;
 292                 bz->f2 = new_f2;        /* next buffer */
 293                 skb = NULL;
 294         } else if (!(skb = dev_alloc_skb(count - 3)))
 295                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 296         else {
 297                 total = count;
 298                 count -= 3;
 299                 ptr = skb_put(skb, count);
 300
 301                 if (zp->z2 + count <= B_FIFO_SIZE + B_SUB_VAL)
 302                         maxlen = count;         /* complete transfer */
 303                 else
 304                         maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 305
 306                 ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 307                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 308                 count -= maxlen;
 309
 310                 if (count) {    /* rest remaining */
 311                         ptr += maxlen;
 312                         ptr1 = bdata;   /* start of buffer */
 313                         memcpy(ptr, ptr1, count);       /* rest */
 314                 }
 315                 bz->za[new_f2].z2 = new_z2;
 316                 bz->f2 = new_f2;        /* next buffer */
 317
 318         }
 319         return (skb);
 320 }
 321
 322 /*******************************/
 323 /* D-channel receive procedure */
 324 /*******************************/
 325 static
 326 int
 327 receive_dmsg(struct IsdnCardState *cs)
 328 {
 329         struct sk_buff *skb;
 330         int maxlen;
 331         int rcnt, total;
 332         int count = 5;
 333         u_char *ptr, *ptr1;
 334         dfifo_type *df;
 335         z_type *zp;
 336
 337         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_rx;
 338         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 339                 debugl1(cs, "rec_dmsg blocked");
 340                 return (1);
 341         }
 342         while (((df->f1 & D_FREG_MASK) != (df->f2 & D_FREG_MASK)) && count--) {
 343                 zp = &df->za[df->f2 & D_FREG_MASK];
 344                 rcnt = zp->z1 - zp->z2;
 345                 if (rcnt < 0)
 346                         rcnt += D_FIFO_SIZE;
 347                 rcnt++;
 348                 if (cs->debug & L1_DEB_ISAC)
 349                         debugl1(cs, "hfcpci recd f1(%d) f2(%d) z1(%x) z2(%x) cnt(%d)",
 350                                 df->f1, df->f2, zp->z1, zp->z2, rcnt);
 351
 352                 if ((rcnt > MAX_DFRAME_LEN + 3) || (rcnt < 4) ||
 353                     (df->data[zp->z1])) {
 354                         if (cs->debug & L1_DEB_WARN)
 355                                 debugl1(cs, "empty_fifo hfcpci paket inv. len %d or crc %d", rcnt, df->data[zp->z1]);
 356 #ifdef ERROR_STATISTIC
 357                         cs->err_rx++;
 358 #endif
 359                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 360                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + rcnt) & (D_FIFO_SIZE - 1);
 361                 } else if ((skb = dev_alloc_skb(rcnt - 3))) {
 362                         total = rcnt;
 363                         rcnt -= 3;
 364                         ptr = skb_put(skb, rcnt);
 365
 366                         if (zp->z2 + rcnt <= D_FIFO_SIZE)
 367                                 maxlen = rcnt;  /* complete transfer */
 368                         else
 369                                 maxlen = D_FIFO_SIZE - zp->z2;  /* maximum */
 370
 371                         ptr1 = df->data + zp->z2;       /* start of data */
 372                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 373                         rcnt -= maxlen;
 374
 375                         if (rcnt) {     /* rest remaining */
 376                                 ptr += maxlen;
 377                                 ptr1 = df->data;        /* start of buffer */
 378                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 379                         }
 380                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 381                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + total) & (D_FIFO_SIZE - 1);
 382
 383                         skb_queue_tail(&cs->rq, skb);
 384                         sched_event_D_pci(cs, D_RCVBUFREADY);
 385                 } else
 386                         printk(KERN_WARNING "HFC-PCI: D receive out of memory\n");
 387         }
 388         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 389         return (1);
 390 }
 391
 392 /*******************************************************************************/
 393 /* check for transparent receive data and read max one threshold size if avail */
 394 /*******************************************************************************/
 395 static int
 396 hfcpci_empty_fifo_trans(struct BCState *bcs, bzfifo_type * bz, u_char * bdata)
 397 {
 398         unsigned short *z1r, *z2r;
 399         int new_z2, fcnt, maxlen;
 400         struct sk_buff *skb;
 401         u_char *ptr, *ptr1;
 402
 403         z1r = &bz->za[MAX_B_FRAMES].z1;         /* pointer to z reg */
 404         z2r = z1r + 1;
 405
 406         if (!(fcnt = *z1r - *z2r))
 407                 return (0);     /* no data avail */
 408
 409         if (fcnt <= 0)
 410                 fcnt += B_FIFO_SIZE;    /* bytes actually buffered */
 411         if (fcnt > HFCPCI_BTRANS_THRESHOLD)
 412                 fcnt = HFCPCI_BTRANS_THRESHOLD;         /* limit size */
 413
 414         new_z2 = *z2r + fcnt;   /* new position in fifo */
 415         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 416                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 417
 418         if (!(skb = dev_alloc_skb(fcnt)))
 419                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 420         else {
 421                 ptr = skb_put(skb, fcnt);
 422                 if (*z2r + fcnt <= B_FIFO_SIZE + B_SUB_VAL)
 423                         maxlen = fcnt;  /* complete transfer */
 424                 else
 425                         maxlen = B_FIFO_SIZE + B_SUB_VAL - *z2r;        /* maximum */
 426
 427                 ptr1 = bdata + (*z2r - B_SUB_VAL);      /* start of data */
 428                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 429                 fcnt -= maxlen;
 430
 431                 if (fcnt) {     /* rest remaining */
 432                         ptr += maxlen;
 433                         ptr1 = bdata;   /* start of buffer */
 434                         memcpy(ptr, ptr1, fcnt);        /* rest */
 435                 }
 436                 skb_queue_tail(&bcs->rqueue, skb);
 437                 hfcpci_sched_event(bcs, B_RCVBUFREADY);
 438         }
 439
 440         *z2r = new_z2;          /* new position */
 441         return (1);
 442 }                               /* hfcpci_empty_fifo_trans */
 443
 444 /**********************************/
 445 /* B-channel main receive routine */
 446 /**********************************/
 447 static void
 448 main_rec_hfcpci(struct BCState *bcs)
 449 {
 450         struct IsdnCardState *cs = bcs->cs;
 451         int rcnt, real_fifo;
 452         int receive, count = 5;
 453         struct sk_buff *skb;
 454         bzfifo_type *bz;
 455         u_char *bdata;
 456         z_type *zp;
 457
 458
 459         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 460                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 461                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 462                 real_fifo = 1;
 463         } else {
 464                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 465                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b1;
 466                 real_fifo = 0;
 467         }
 468       Begin:
 469         count--;
 470         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 471                 debugl1(cs, "rec_data %d blocked", bcs->channel);
 472                 return;
 473         }
 474         if (bz->f1 != bz->f2) {
 475                 if (cs->debug & L1_DEB_HSCX)
 476                         debugl1(cs, "hfcpci rec %d f1(%d) f2(%d)",
 477                                 bcs->channel, bz->f1, bz->f2);
 478                 zp = &bz->za[bz->f2];
 479
 480                 rcnt = zp->z1 - zp->z2;
 481                 if (rcnt < 0)
 482                         rcnt += B_FIFO_SIZE;
 483                 rcnt++;
 484                 if (cs->debug & L1_DEB_HSCX)
 485                         debugl1(cs, "hfcpci rec %d z1(%x) z2(%x) cnt(%d)",
 486                                 bcs->channel, zp->z1, zp->z2, rcnt);
 487                 if ((skb = hfcpci_empty_fifo(bcs, bz, bdata, rcnt))) {
 488                         skb_queue_tail(&bcs->rqueue, skb);
 489                         hfcpci_sched_event(bcs, B_RCVBUFREADY);
 490                 }
 491                 rcnt = bz->f1 - bz->f2;
 492                 if (rcnt < 0)
 493                         rcnt += MAX_B_FRAMES + 1;
 494                 if (cs->hw.hfcpci.last_bfifo_cnt[real_fifo] > rcnt + 1) {
 495                         rcnt = 0;
 496                         hfcpci_clear_fifo_rx(cs, real_fifo);
 497                 }
 498                 cs->hw.hfcpci.last_bfifo_cnt[real_fifo] = rcnt;
 499                 if (rcnt > 1)
 500                         receive = 1;
 501                 else
 502                         receive = 0;
 503         } else if (bcs->mode == L1_MODE_TRANS)
 504                 receive = hfcpci_empty_fifo_trans(bcs, bz, bdata);
 505         else
 506                 receive = 0;
 507         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 508         if (count && receive)
 509                 goto Begin;
 510 }
 511
 512 /**************************/
 513 /* D-channel send routine */
 514 /**************************/
 515 static void
 516 hfcpci_fill_dfifo(struct IsdnCardState *cs)
 517 {
 518         int fcnt;
 519         int count, new_z1, maxlen;
 520         dfifo_type *df;
 521         u_char *src, *dst, new_f1;
 522
 523         if (!cs->tx_skb)
 524                 return;
 525         if (cs->tx_skb->len <= 0)
 526                 return;
 527
 528         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_tx;
 529
 530         if (cs->debug & L1_DEB_ISAC)
 531                 debugl1(cs, "hfcpci_fill_Dfifo f1(%d) f2(%d) z1(f1)(%x)",
 532                         df->f1, df->f2,
 533                         df->za[df->f1 & D_FREG_MASK].z1);
 534         fcnt = df->f1 - df->f2; /* frame count actually buffered */
 535         if (fcnt < 0)
 536                 fcnt += (MAX_D_FRAMES + 1);     /* if wrap around */
 537         if (fcnt > (MAX_D_FRAMES - 1)) {
 538                 if (cs->debug & L1_DEB_ISAC)
 539                         debugl1(cs, "hfcpci_fill_Dfifo more as 14 frames");
 540 #ifdef ERROR_STATISTIC
 541                 cs->err_tx++;
 542 #endif
 543                 return;
 544         }
 545         /* now determine free bytes in FIFO buffer */
 546         count = df->za[df->f2 & D_FREG_MASK].z2 - df->za[df->f1 & D_FREG_MASK].z1 - 1;
 547         if (count <= 0)
 548                 count += D_FIFO_SIZE;   /* count now contains available bytes */
 549
 550         if (cs->debug & L1_DEB_ISAC)
 551                 debugl1(cs, "hfcpci_fill_Dfifo count(%ld/%d)",
 552                         cs->tx_skb->len, count);
 553         if (count < cs->tx_skb->len) {
 554                 if (cs->debug & L1_DEB_ISAC)
 555                         debugl1(cs, "hfcpci_fill_Dfifo no fifo mem");
 556                 return;
 557         }
 558         count = cs->tx_skb->len;        /* get frame len */
 559         new_z1 = (df->za[df->f1 & D_FREG_MASK].z1 + count) & (D_FIFO_SIZE - 1);
 560         new_f1 = ((df->f1 + 1) & D_FREG_MASK) | (D_FREG_MASK + 1);
 561         src = cs->tx_skb->data; /* source pointer */
 562         dst = df->data + df->za[df->f1 & D_FREG_MASK].z1;
 563         maxlen = D_FIFO_SIZE - df->za[df->f1 & D_FREG_MASK].z1;         /* end fifo */
 564         if (maxlen > count)
 565                 maxlen = count; /* limit size */
 566         memcpy(dst, src, maxlen);       /* first copy */
 567
 568         count -= maxlen;        /* remaining bytes */
 569         if (count) {
 570                 dst = df->data; /* start of buffer */
 571                 src += maxlen;  /* new position */
 572                 memcpy(dst, src, count);
 573         }
 574         df->za[new_f1 & D_FREG_MASK].z1 = new_z1;       /* for next buffer */
 575         df->za[df->f1 & D_FREG_MASK].z1 = new_z1;       /* new pos actual buffer */
 576         df->f1 = new_f1;        /* next frame */
 577
 578         dev_kfree_skb_any(cs->tx_skb);
 579         cs->tx_skb = NULL;
 580 }
 581
 582 /**************************/
 583 /* B-channel send routine */
 584 /**************************/
 585 static void
 586 hfcpci_fill_fifo(struct BCState *bcs)
 587 {
 588         struct IsdnCardState *cs = bcs->cs;
 589         int maxlen, fcnt;
 590         int count, new_z1;
 591         bzfifo_type *bz;
 592         u_char *bdata;
 593         u_char new_f1, *src, *dst;
 594         unsigned short *z1t, *z2t;
 595
 596         if (!bcs->tx_skb)
 597                 return;
 598         if (bcs->tx_skb->len <= 0)
 599                 return;
 600
 601         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 602                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 603                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b2;
 604         } else {
 605                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 606                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b1;
 607         }
 608
 609         if (bcs->mode == L1_MODE_TRANS) {
 610                 z1t = &bz->za[MAX_B_FRAMES].z1;
 611                 z2t = z1t + 1;
 612                 if (cs->debug & L1_DEB_HSCX)
 613                         debugl1(cs, "hfcpci_fill_fifo_trans %d z1(%x) z2(%x)",
 614                                 bcs->channel, *z1t, *z2t);
 615                 fcnt = *z2t - *z1t;
 616                 if (fcnt <= 0)
 617                         fcnt += B_FIFO_SIZE;    /* fcnt contains available bytes in fifo */
 618                 fcnt = B_FIFO_SIZE - fcnt;      /* remaining bytes to send */
 619
 620                 while ((fcnt < 2 * HFCPCI_BTRANS_THRESHOLD) && (bcs->tx_skb)) {
 621                         if (bcs->tx_skb->len < B_FIFO_SIZE - fcnt) {
 622                                 /* data is suitable for fifo */
 623                                 count = bcs->tx_skb->len;
 624
 625                                 new_z1 = *z1t + count;  /* new buffer Position */
 626                                 if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 627                                         new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 628                                 src = bcs->tx_skb->data;        /* source pointer */
 629                                 dst = bdata + (*z1t - B_SUB_VAL);
 630                                 maxlen = (B_FIFO_SIZE + B_SUB_VAL) - *z1t;      /* end of fifo */
 631                                 if (maxlen > count)
 632                                         maxlen = count;         /* limit size */
 633                                 memcpy(dst, src, maxlen);       /* first copy */
 634
 635                                 count -= maxlen;        /* remaining bytes */
 636                                 if (count) {
 637                                         dst = bdata;    /* start of buffer */
 638                                         src += maxlen;  /* new position */
 639                                         memcpy(dst, src, count);
 640                                 }
 641                                 bcs->tx_cnt -= bcs->tx_skb->len;
 642                                 fcnt += bcs->tx_skb->len;
 643                                 *z1t = new_z1;  /* now send data */
 644                         } else if (cs->debug & L1_DEB_HSCX)
 645                                 debugl1(cs, "hfcpci_fill_fifo_trans %d frame length %d discarded",
 646                                         bcs->channel, bcs->tx_skb->len);
 647
 648                         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 649                                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 650                                 u_long  flags;
 651                                 spin_lock_irqsave(&bcs->aclock, flags);
 652                                 bcs->ackcnt += bcs->tx_skb->len;
 653                                 spin_unlock_irqrestore(&bcs->aclock, flags);
 654                                 schedule_event(bcs, B_ACKPENDING);
 655                         }
 656
 657                         dev_kfree_skb_any(bcs->tx_skb);
 658                         bcs->tx_skb = skb_dequeue(&bcs->squeue);        /* fetch next data */
 659                 }
 660                 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 661                 return;
 662         }
 663         if (cs->debug & L1_DEB_HSCX)
 664                 debugl1(cs, "hfcpci_fill_fifo_hdlc %d f1(%d) f2(%d) z1(f1)(%x)",
 665                         bcs->channel, bz->f1, bz->f2,
 666                         bz->za[bz->f1].z1);
 667
 668         fcnt = bz->f1 - bz->f2; /* frame count actually buffered */
 669         if (fcnt < 0)
 670                 fcnt += (MAX_B_FRAMES + 1);     /* if wrap around */
 671         if (fcnt > (MAX_B_FRAMES - 1)) {
 672                 if (cs->debug & L1_DEB_HSCX)
 673                         debugl1(cs, "hfcpci_fill_Bfifo more as 14 frames");
 674                 return;
 675         }
 676         /* now determine free bytes in FIFO buffer */
 677         count = bz->za[bz->f2].z2 - bz->za[bz->f1].z1 - 1;
 678         if (count <= 0)
 679                 count += B_FIFO_SIZE;   /* count now contains available bytes */
 680
 681         if (cs->debug & L1_DEB_HSCX)
 682                 debugl1(cs, "hfcpci_fill_fifo %d count(%ld/%d),%lx",
 683                         bcs->channel, bcs->tx_skb->len,
 684                         count, current->state);
 685
 686         if (count < bcs->tx_skb->len) {
 687                 if (cs->debug & L1_DEB_HSCX)
 688                         debugl1(cs, "hfcpci_fill_fifo no fifo mem");
 689                 return;
 690         }
 691         count = bcs->tx_skb->len;       /* get frame len */
 692         new_z1 = bz->za[bz->f1].z1 + count;     /* new buffer Position */
 693         if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 694                 new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 695
 696         new_f1 = ((bz->f1 + 1) & MAX_B_FRAMES);
 697         src = bcs->tx_skb->data;        /* source pointer */
 698         dst = bdata + (bz->za[bz->f1].z1 - B_SUB_VAL);
 699         maxlen = (B_FIFO_SIZE + B_SUB_VAL) - bz->za[bz->f1].z1;         /* end fifo */
 700         if (maxlen > count)
 701                 maxlen = count; /* limit size */
 702         memcpy(dst, src, maxlen);       /* first copy */
 703
 704         count -= maxlen;        /* remaining bytes */
 705         if (count) {
 706                 dst = bdata;    /* start of buffer */
 707                 src += maxlen;  /* new position */
 708                 memcpy(dst, src, count);
 709         }
 710         bcs->tx_cnt -= bcs->tx_skb->len;
 711         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 712                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 713                 u_long  flags;
 714                 spin_lock_irqsave(&bcs->aclock, flags);
 715                 bcs->ackcnt += bcs->tx_skb->len;
 716                 spin_unlock_irqrestore(&bcs->aclock, flags);
 717                 schedule_event(bcs, B_ACKPENDING);
 718         }
 719
 720         bz->za[new_f1].z1 = new_z1;     /* for next buffer */
 721         bz->f1 = new_f1;        /* next frame */
 722
 723         dev_kfree_skb_any(bcs->tx_skb);
 724         bcs->tx_skb = NULL;
 725         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 726 }
 727
 728 /**********************************************/
 729 /* D-channel l1 state call for leased NT-mode */
 730 /**********************************************/
 731 static void
 732 dch_nt_l2l1(struct PStack *st, int pr, void *arg)
 733 {
 734         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
 735
 736         switch (pr) {
 737                 case (PH_DATA | REQUEST):
 738                 case (PH_PULL | REQUEST):
 739                 case (PH_PULL | INDICATION):
 740                         st->l1.l1hw(st, pr, arg);
 741                         break;
 742                 case (PH_ACTIVATE | REQUEST):
 743                         st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
 744                         break;
 745                 case (PH_TESTLOOP | REQUEST):
 746                         if (1 & (long) arg)
 747                                 debugl1(cs, "PH_TEST_LOOP B1");
 748                         if (2 & (long) arg)
 749                                 debugl1(cs, "PH_TEST_LOOP B2");
 750                         if (!(3 & (long) arg))
 751                                 debugl1(cs, "PH_TEST_LOOP DISABLED");
 752                         st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
 753                         break;
 754                 default:
 755                         if (cs->debug)
 756                                 debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr);
 757                         break;
 758         }
 759 }
 760
 761
 762
 763 /***********************/
 764 /* set/reset echo mode */
 765 /***********************/
 766 static int
 767 hfcpci_auxcmd(struct IsdnCardState *cs, isdn_ctrl * ic)
 768 {
 769         u_long  flags;
 770         int     i = *(unsigned int *) ic->parm.num;
 771
 772         if ((ic->arg == 98) &&
 773             (!(cs->hw.hfcpci.int_m1 & (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC + HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC)))) {
 774                 spin_lock_irqsave(&cs->lock, flags);
 775                 Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_NT); /* ST-Bit delay for NT-Mode */
 776                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 0);    /* HFC ST G0 */
 777                 udelay(10);
 778                 cs->hw.hfcpci.sctrl |= SCTRL_MODE_NT;
 779                 Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);       /* set NT-mode */
 780                 udelay(10);
 781                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 1);    /* HFC ST G1 */
 782                 udelay(10);
 783                 Write_hfc(cs, HFCPCI_STATES, 1 | HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
 784                 cs->dc.hfcpci.ph_state = 1;
 785                 cs->hw.hfcpci.nt_mode = 1;
 786                 cs->hw.hfcpci.nt_timer = 0;
 787                 cs->stlist->l2.l2l1 = dch_nt_l2l1;
 788                 spin_unlock_irqrestore(&cs->lock, flags);
 789                 debugl1(cs, "NT mode activated");
 790                 return (0);
 791         }
 792         if ((cs->chanlimit > 1) || (cs->hw.hfcpci.bswapped) ||
 793             (cs->hw.hfcpci.nt_mode) || (ic->arg != 12))
 794                 return (-EINVAL);
 795
 796         spin_lock_irqsave(&cs->lock, flags);
 797         if (i) {
 798                 cs->logecho = 1;
 799                 cs->hw.hfcpci.trm |= 0x20;      /* enable echo chan */
 800                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_B2REC;
 801                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2RX;
 802         } else {
 803                 cs->logecho = 0;
 804                 cs->hw.hfcpci.trm &= ~0x20;     /* disable echo chan */
 805                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_B2REC;
 806                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2RX;
 807         }
 808         cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
 809         cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
 810         cs->hw.hfcpci.conn |= 0x10;     /* B2-IOM -> B2-ST */
 811         cs->hw.hfcpci.ctmt &= ~2;
 812         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 813         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 814         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 815         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 816         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 817         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 818         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 819         spin_unlock_irqrestore(&cs->lock, flags);
 820         return (0);
 821 }                               /* hfcpci_auxcmd */
 822
 823 /*****************************/
 824 /* E-channel receive routine */
 825 /*****************************/
 826 static void
 827 receive_emsg(struct IsdnCardState *cs)
 828 {
 829         int rcnt;
 830         int receive, count = 5;
 831         bzfifo_type *bz;
 832         u_char *bdata;
 833         z_type *zp;
 834         u_char *ptr, *ptr1, new_f2;
 835         int total, maxlen, new_z2;
 836         u_char e_buffer[256];
 837
 838         bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 839         bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 840       Begin:
 841         count--;
 842         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 843                 debugl1(cs, "echo_rec_data blocked");
 844                 return;
 845         }
 846         if (bz->f1 != bz->f2) {
 847                 if (cs->debug & L1_DEB_ISAC)
 848                         debugl1(cs, "hfcpci e_rec f1(%d) f2(%d)",
 849                                 bz->f1, bz->f2);
 850                 zp = &bz->za[bz->f2];
 851
 852                 rcnt = zp->z1 - zp->z2;
 853                 if (rcnt < 0)
 854                         rcnt += B_FIFO_SIZE;
 855                 rcnt++;
 856                 if (cs->debug & L1_DEB_ISAC)
 857                         debugl1(cs, "hfcpci e_rec z1(%x) z2(%x) cnt(%d)",
 858                                 zp->z1, zp->z2, rcnt);
 859                 new_z2 = zp->z2 + rcnt;         /* new position in fifo */
 860                 if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 861                         new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 862                 new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 863                 if ((rcnt > 256 + 3) || (count < 4) ||
 864                     (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 865                         if (cs->debug & L1_DEB_WARN)
 866                                 debugl1(cs, "hfcpci_empty_echan: incoming packet invalid length %d or crc", rcnt);
 867                         bz->za[new_f2].z2 = new_z2;
 868                         bz->f2 = new_f2;        /* next buffer */
 869                 } else {
 870                         total = rcnt;
 871                         rcnt -= 3;
 872                         ptr = e_buffer;
 873
 874                         if (zp->z2 <= B_FIFO_SIZE + B_SUB_VAL)
 875                                 maxlen = rcnt;  /* complete transfer */
 876                         else
 877                                 maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 878
 879                         ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 880                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 881                         rcnt -= maxlen;
 882
 883                         if (rcnt) {     /* rest remaining */
 884                                 ptr += maxlen;
 885                                 ptr1 = bdata;   /* start of buffer */
 886                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 887                         }
 888                         bz->za[new_f2].z2 = new_z2;
 889                         bz->f2 = new_f2;        /* next buffer */
 890                         if (cs->debug & DEB_DLOG_HEX) {
 891                                 ptr = cs->dlog;
 892                                 if ((total - 3) < MAX_DLOG_SPACE / 3 - 10) {
 893                                         *ptr++ = 'E';
 894                                         *ptr++ = 'C';
 895                                         *ptr++ = 'H';
 896                                         *ptr++ = 'O';
 897                                         *ptr++ = ':';
 898                                         ptr += QuickHex(ptr, e_buffer, total - 3);
 899                                         ptr--;
 900                                         *ptr++ = '\n';
 901                                         *ptr = 0;
 902                                         HiSax_putstatus(cs, NULL, cs->dlog);
 903                                 } else
 904                                         HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", total - 3);
 905                         }
 906                 }
 907
 908                 rcnt = bz->f1 - bz->f2;
 909                 if (rcnt < 0)
 910                         rcnt += MAX_B_FRAMES + 1;
 911                 if (rcnt > 1)
 912                         receive = 1;
 913                 else
 914                         receive = 0;
 915         } else
 916                 receive = 0;
 917         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 918         if (count && receive)
 919                 goto Begin;
 920 }                               /* receive_emsg */
 921
 922 /*********************/
 923 /* Interrupt handler */
 924 /*********************/
 925 static irqreturn_t
 926 hfcpci_interrupt(int intno, void *dev_id)
 927 {
 928         u_long flags;
 929         struct IsdnCardState *cs = dev_id;
 930         u_char exval;
 931         struct BCState *bcs;
 932         int count = 15;
 933         u_char val, stat;
 934
 935         if (!(cs->hw.hfcpci.int_m2 & 0x08)) {
 936                 debugl1(cs, "HFC-PCI: int_m2 %x not initialised", cs->hw.hfcpci.int_m2);
 937                 return IRQ_NONE;        /* not initialised */
 938         }
 939         spin_lock_irqsave(&cs->lock, flags);
 940         if (HFCPCI_ANYINT & (stat = Read_hfc(cs, HFCPCI_STATUS))) {
 941                 val = Read_hfc(cs, HFCPCI_INT_S1);
 942                 if (cs->debug & L1_DEB_ISAC)
 943                         debugl1(cs, "HFC-PCI: stat(%02x) s1(%02x)", stat, val);
 944         } else {
 945                 spin_unlock_irqrestore(&cs->lock, flags);
 946                 return IRQ_NONE;
 947         }
 948         if (cs->debug & L1_DEB_ISAC)
 949                 debugl1(cs, "HFC-PCI irq %x %s", val,
 950                         test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
 951                         "locked" : "unlocked");
 952         val &= cs->hw.hfcpci.int_m1;
 953         if (val & 0x40) {       /* state machine irq */
 954                 exval = Read_hfc(cs, HFCPCI_STATES) & 0xf;
 955                 if (cs->debug & L1_DEB_ISAC)
 956                         debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcpci.ph_state,
 957                                 exval);
 958                 cs->dc.hfcpci.ph_state = exval;
 959                 sched_event_D_pci(cs, D_L1STATECHANGE);
 960                 val &= ~0x40;
 961         }
 962         if (val & 0x80) {       /* timer irq */
 963                 if (cs->hw.hfcpci.nt_mode) {
 964                         if ((--cs->hw.hfcpci.nt_timer) < 0)
 965                                 sched_event_D_pci(cs, D_L1STATECHANGE);
 966                 }
 967                 val &= ~0x80;
 968                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
 969         }
 970         while (val) {
 971                 if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 972                         cs->hw.hfcpci.int_s1 |= val;
 973                         spin_unlock_irqrestore(&cs->lock, flags);
 974                         return IRQ_HANDLED;
 975                 }
 976                 if (cs->hw.hfcpci.int_s1 & 0x18) {
 977                         exval = val;
 978                         val = cs->hw.hfcpci.int_s1;
 979                         cs->hw.hfcpci.int_s1 = exval;
 980                 }
 981                 if (val & 0x08) {
 982                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
 983                                 if (cs->debug)
 984                                         debugl1(cs, "hfcpci spurious 0x08 IRQ");
 985                         } else
 986                                 main_rec_hfcpci(bcs);
 987                 }
 988                 if (val & 0x10) {
 989                         if (cs->logecho)
 990                                 receive_emsg(cs);
 991                         else if (!(bcs = Sel_BCS(cs, 1))) {
 992                                 if (cs->debug)
 993                                         debugl1(cs, "hfcpci spurious 0x10 IRQ");
 994                         } else
 995                                 main_rec_hfcpci(bcs);
 996                 }
 997                 if (val & 0x01) {
 998                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
 999                                 if (cs->debug)
1000                                         debugl1(cs, "hfcpci spurious 0x01 IRQ");
1001                         } else {
1002                                 if (bcs->tx_skb) {
1003                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1004                                                 hfcpci_fill_fifo(bcs);
1005                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1006                                         } else
1007                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1008                                 } else {
1009                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1010                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1011                                                         hfcpci_fill_fifo(bcs);
1012                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1013                                                 } else
1014                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1015                                         } else {
1016                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1017                                         }
1018                                 }
1019                         }
1020                 }
1021                 if (val & 0x02) {
1022                         if (!(bcs = Sel_BCS(cs, 1))) {
1023                                 if (cs->debug)
1024                                         debugl1(cs, "hfcpci spurious 0x02 IRQ");
1025                         } else {
1026                                 if (bcs->tx_skb) {
1027                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1028                                                 hfcpci_fill_fifo(bcs);
1029                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1030                                         } else
1031                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1032                                 } else {
1033                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1034                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1035                                                         hfcpci_fill_fifo(bcs);
1036                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1037                                                 } else
1038                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1039                                         } else {
1040                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1041                                         }
1042                                 }
1043                         }
1044                 }
1045                 if (val & 0x20) {       /* receive dframe */
1046                         receive_dmsg(cs);
1047                 }
1048                 if (val & 0x04) {       /* dframe transmitted */
1049                         if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
1050                                 del_timer(&cs->dbusytimer);
1051                         if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
1052                                 sched_event_D_pci(cs, D_CLEARBUSY);
1053                         if (cs->tx_skb) {
1054                                 if (cs->tx_skb->len) {
1055                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1056                                                 hfcpci_fill_dfifo(cs);
1057                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1058                                         } else {
1059                                                 debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1060                                         }
1061                                         goto afterXPR;
1062                                 } else {
1063                                         dev_kfree_skb_irq(cs->tx_skb);
1064                                         cs->tx_cnt = 0;
1065                                         cs->tx_skb = NULL;
1066                                 }
1067                         }
1068                         if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
1069                                 cs->tx_cnt = 0;
1070                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1071                                         hfcpci_fill_dfifo(cs);
1072                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1073                                 } else {
1074                                         debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1075                                 }
1076                         } else
1077                                 sched_event_D_pci(cs, D_XMTBUFREADY);
1078                 }
1079               afterXPR:
1080                 if (cs->hw.hfcpci.int_s1 && count--) {
1081                         val = cs->hw.hfcpci.int_s1;
1082                         cs->hw.hfcpci.int_s1 = 0;
1083                         if (cs->debug & L1_DEB_ISAC)
1084                                 debugl1(cs, "HFC-PCI irq %x loop %d", val, 15 - count);
1085                 } else
1086                         val = 0;
1087         }
1088         spin_unlock_irqrestore(&cs->lock, flags);
1089         return IRQ_HANDLED;
1090 }
1091
1092 /********************************************************************/
1093 /* timer callback for D-chan busy resolution. Currently no function */
1094 /********************************************************************/
1095 static void
1096 hfcpci_dbusy_timer(struct IsdnCardState *cs)
1097 {
1098 }
1099
1100 /*************************************/
1101 /* Layer 1 D-channel hardware access */
1102 /*************************************/
1103 static void
1104 HFCPCI_l1hw(struct PStack *st, int pr, void *arg)
1105 {
1106         u_long flags;
1107         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
1108         struct sk_buff *skb = arg;
1109
1110         switch (pr) {
1111                 case (PH_DATA | REQUEST):
1112                         if (cs->debug & DEB_DLOG_HEX)
1113                                 LogFrame(cs, skb->data, skb->len);
1114                         if (cs->debug & DEB_DLOG_VERBOSE)
1115                                 dlogframe(cs, skb, 0);
1116                         spin_lock_irqsave(&cs->lock, flags);
1117                         if (cs->tx_skb) {
1118                                 skb_queue_tail(&cs->sq, skb);
1119 #ifdef L2FRAME_DEBUG            /* psa */
1120                                 if (cs->debug & L1_DEB_LAPD)
1121                                         Logl2Frame(cs, skb, "PH_DATA Queued", 0);
1122 #endif
1123                         } else {
1124                                 cs->tx_skb = skb;
1125                                 cs->tx_cnt = 0;
1126 #ifdef L2FRAME_DEBUG            /* psa */
1127                                 if (cs->debug & L1_DEB_LAPD)
1128                                         Logl2Frame(cs, skb, "PH_DATA", 0);
1129 #endif
1130                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1131                                         hfcpci_fill_dfifo(cs);
1132                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1133                                 } else
1134                                         debugl1(cs, "hfcpci_fill_dfifo blocked");
1135
1136                         }
1137                         spin_unlock_irqrestore(&cs->lock, flags);
1138                         break;
1139                 case (PH_PULL | INDICATION):
1140                         spin_lock_irqsave(&cs->lock, flags);
1141                         if (cs->tx_skb) {
1142                                 if (cs->debug & L1_DEB_WARN)
1143                                         debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
1144                                 skb_queue_tail(&cs->sq, skb);
1145                                 spin_unlock_irqrestore(&cs->lock, flags);
1146                                 break;
1147                         }
1148                         if (cs->debug & DEB_DLOG_HEX)
1149                                 LogFrame(cs, skb->data, skb->len);
1150                         if (cs->debug & DEB_DLOG_VERBOSE)
1151                                 dlogframe(cs, skb, 0);
1152                         cs->tx_skb = skb;
1153                         cs->tx_cnt = 0;
1154 #ifdef L2FRAME_DEBUG            /* psa */
1155                         if (cs->debug & L1_DEB_LAPD)
1156                                 Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
1157 #endif
1158                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1159                                 hfcpci_fill_dfifo(cs);
1160                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1161                         } else
1162                                 debugl1(cs, "hfcpci_fill_dfifo blocked");
1163                         spin_unlock_irqrestore(&cs->lock, flags);
1164                         break;
1165                 case (PH_PULL | REQUEST):
1166 #ifdef L2FRAME_DEBUG            /* psa */
1167                         if (cs->debug & L1_DEB_LAPD)
1168                                 debugl1(cs, "-> PH_REQUEST_PULL");
1169 #endif
1170                         if (!cs->tx_skb) {
1171                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1172                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1173                         } else
1174                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1175                         break;
1176                 case (HW_RESET | REQUEST):
1177                         spin_lock_irqsave(&cs->lock, flags);
1178                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 3);    /* HFC ST 3 */
1179                         udelay(6);
1180                         Write_hfc(cs, HFCPCI_STATES, 3);        /* HFC ST 2 */
1181                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1182                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1183                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
1184                         spin_unlock_irqrestore(&cs->lock, flags);
1185                         l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
1186                         break;
1187                 case (HW_ENABLE | REQUEST):
1188                         spin_lock_irqsave(&cs->lock, flags);
1189                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_DO_ACTION);
1190                         spin_unlock_irqrestore(&cs->lock, flags);
1191                         break;
1192                 case (HW_DEACTIVATE | REQUEST):
1193                         spin_lock_irqsave(&cs->lock, flags);
1194                         cs->hw.hfcpci.mst_m &= ~HFCPCI_MASTER;
1195                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1196                         spin_unlock_irqrestore(&cs->lock, flags);
1197                         break;
1198                 case (HW_INFO3 | REQUEST):
1199                         spin_lock_irqsave(&cs->lock, flags);
1200                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1201                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1202                         spin_unlock_irqrestore(&cs->lock, flags);
1203                         break;
1204                 case (HW_TESTLOOP | REQUEST):
1205                         spin_lock_irqsave(&cs->lock, flags);
1206                         switch ((long) arg) {
1207                                 case (1):
1208                                         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* tx slot */
1209                                         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* rx slot */
1210                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~7) | 1;
1211                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1212                                         break;
1213
1214                                 case (2):
1215                                         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* tx slot */
1216                                         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* rx slot */
1217                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~0x38) | 0x08;
1218                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1219                                         break;
1220
1221                                 default:
1222                                         spin_unlock_irqrestore(&cs->lock, flags);
1223                                         if (cs->debug & L1_DEB_WARN)
1224                                                 debugl1(cs, "hfcpci_l1hw loop invalid %4lx", (long) arg);
1225                                         return;
1226                         }
1227                         cs->hw.hfcpci.trm |= 0x80;      /* enable IOM-loop */
1228                         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
1229                         spin_unlock_irqrestore(&cs->lock, flags);
1230                         break;
1231                 default:
1232                         if (cs->debug & L1_DEB_WARN)
1233                                 debugl1(cs, "hfcpci_l1hw unknown pr %4x", pr);
1234                         break;
1235         }
1236 }
1237
1238 /***********************************************/
1239 /* called during init setting l1 stack pointer */
1240 /***********************************************/
1241 static void
1242 setstack_hfcpci(struct PStack *st, struct IsdnCardState *cs)
1243 {
1244         st->l1.l1hw = HFCPCI_l1hw;
1245 }
1246
1247 /**************************************/
1248 /* send B-channel data if not blocked */
1249 /**************************************/
1250 static void
1251 hfcpci_send_data(struct BCState *bcs)
1252 {
1253         struct IsdnCardState *cs = bcs->cs;
1254
1255         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1256                 hfcpci_fill_fifo(bcs);
1257                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1258         } else
1259                 debugl1(cs, "send_data %d blocked", bcs->channel);
1260 }
1261
1262 /***************************************************************/
1263 /* activate/deactivate hardware for selected channels and mode */
1264 /***************************************************************/
1265 static void
1266 mode_hfcpci(struct BCState *bcs, int mode, int bc)
1267 {
1268         struct IsdnCardState *cs = bcs->cs;
1269         int fifo2;
1270
1271         if (cs->debug & L1_DEB_HSCX)
1272                 debugl1(cs, "HFCPCI bchannel mode %d bchan %d/%d",
1273                         mode, bc, bcs->channel);
1274         bcs->mode = mode;
1275         bcs->channel = bc;
1276         fifo2 = bc;
1277         if (cs->chanlimit > 1) {
1278                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1279                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1280         } else {
1281                 if (bc) {
1282                         if (mode != L1_MODE_NULL) {
1283                                 cs->hw.hfcpci.bswapped = 1;     /* B1 and B2 exchanged */
1284                                 cs->hw.hfcpci.sctrl_e |= 0x80;
1285                         } else {
1286                                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1287                                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1288                         }
1289                         fifo2 = 0;
1290                 } else {
1291                         cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1292                         cs->hw.hfcpci.sctrl_e &= ~0x80;
1293                 }
1294         }
1295         switch (mode) {
1296                 case (L1_MODE_NULL):
1297                         if (bc) {
1298                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
1299                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
1300                         } else {
1301                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B1_ENA;
1302                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B1_ENA;
1303                         }
1304                         if (fifo2) {
1305                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1306                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1307                         } else {
1308                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1309                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1310                         }
1311                         break;
1312                 case (L1_MODE_TRANS):
1313                         hfcpci_clear_fifo_rx(cs, fifo2);
1314                         hfcpci_clear_fifo_tx(cs, fifo2);
1315                         if (bc) {
1316                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1317                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1318                         } else {
1319                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1320                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1321                         }
1322                         if (fifo2) {
1323                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1324                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1325                                 cs->hw.hfcpci.ctmt |= 2;
1326                                 cs->hw.hfcpci.conn &= ~0x18;
1327                         } else {
1328                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1329                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1330                                 cs->hw.hfcpci.ctmt |= 1;
1331                                 cs->hw.hfcpci.conn &= ~0x03;
1332                         }
1333                         break;
1334                 case (L1_MODE_HDLC):
1335                         hfcpci_clear_fifo_rx(cs, fifo2);
1336                         hfcpci_clear_fifo_tx(cs, fifo2);
1337                         if (bc) {
1338                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1339                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1340                         } else {
1341                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1342                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1343                         }
1344                         if (fifo2) {
1345                                 cs->hw.hfcpci.last_bfifo_cnt[1] = 0;
1346                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1347                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1348                                 cs->hw.hfcpci.ctmt &= ~2;
1349                                 cs->hw.hfcpci.conn &= ~0x18;
1350                         } else {
1351                                 cs->hw.hfcpci.last_bfifo_cnt[0] = 0;
1352                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1353                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1354                                 cs->hw.hfcpci.ctmt &= ~1;
1355                                 cs->hw.hfcpci.conn &= ~0x03;
1356                         }
1357                         break;
1358                 case (L1_MODE_EXTRN):
1359                         if (bc) {
1360                                 cs->hw.hfcpci.conn |= 0x10;
1361                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1362                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1363                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1364                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1365                         } else {
1366                                 cs->hw.hfcpci.conn |= 0x02;
1367                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1368                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1369                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1370                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1371                         }
1372                         break;
1373         }
1374         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);
1375         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1376         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
1377         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
1378         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
1379         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
1380         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1381 }
1382
1383 /******************************/
1384 /* Layer2 -> Layer 1 Transfer */
1385 /******************************/
1386 static void
1387 hfcpci_l2l1(struct PStack *st, int pr, void *arg)
1388 {
1389         struct BCState  *bcs = st->l1.bcs;
1390         u_long          flags;
1391         struct sk_buff  *skb = arg;
1392
1393         switch (pr) {
1394                 case (PH_DATA | REQUEST):
1395                         spin_lock_irqsave(&bcs->cs->lock, flags);
1396                         if (bcs->tx_skb) {
1397                                 skb_queue_tail(&bcs->squeue, skb);
1398                         } else {
1399                                 bcs->tx_skb = skb;
1400 //                              test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1401                                 bcs->cs->BC_Send_Data(bcs);
1402                         }
1403                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1404                         break;
1405                 case (PH_PULL | INDICATION):
1406                         spin_lock_irqsave(&bcs->cs->lock, flags);
1407                         if (bcs->tx_skb) {
1408                                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1409                                 printk(KERN_WARNING "hfc_l2l1: this shouldn't happen\n");
1410                                 break;
1411                         }
1412 //                      test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1413                         bcs->tx_skb = skb;
1414                         bcs->cs->BC_Send_Data(bcs);
1415                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1416                         break;
1417                 case (PH_PULL | REQUEST):
1418                         if (!bcs->tx_skb) {
1419                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1420                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1421                         } else
1422                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1423                         break;
1424                 case (PH_ACTIVATE | REQUEST):
1425                         spin_lock_irqsave(&bcs->cs->lock, flags);
1426                         test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
1427                         mode_hfcpci(bcs, st->l1.mode, st->l1.bc);
1428                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1429                         l1_msg_b(st, pr, arg);
1430                         break;
1431                 case (PH_DEACTIVATE | REQUEST):
1432                         l1_msg_b(st, pr, arg);
1433                         break;
1434                 case (PH_DEACTIVATE | CONFIRM):
1435                         spin_lock_irqsave(&bcs->cs->lock, flags);
1436                         test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
1437                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1438                         mode_hfcpci(bcs, 0, st->l1.bc);
1439                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1440                         st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
1441                         break;
1442         }
1443 }
1444
1445 /******************************************/
1446 /* deactivate B-channel access and queues */
1447 /******************************************/
1448 static void
1449 close_hfcpci(struct BCState *bcs)
1450 {
1451         mode_hfcpci(bcs, 0, bcs->channel);
1452         if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
1453                 skb_queue_purge(&bcs->rqueue);
1454                 skb_queue_purge(&bcs->squeue);
1455                 if (bcs->tx_skb) {
1456                         dev_kfree_skb_any(bcs->tx_skb);
1457                         bcs->tx_skb = NULL;
1458                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1459                 }
1460         }
1461 }
1462
1463 /*************************************/
1464 /* init B-channel queues and control */
1465 /*************************************/
1466 static int
1467 open_hfcpcistate(struct IsdnCardState *cs, struct BCState *bcs)
1468 {
1469         if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
1470                 skb_queue_head_init(&bcs->rqueue);
1471                 skb_queue_head_init(&bcs->squeue);
1472         }
1473         bcs->tx_skb = NULL;
1474         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1475         bcs->event = 0;
1476         bcs->tx_cnt = 0;
1477         return (0);
1478 }
1479
1480 /*********************************/
1481 /* inits the stack for B-channel */
1482 /*********************************/
1483 static int
1484 setstack_2b(struct PStack *st, struct BCState *bcs)
1485 {
1486         bcs->channel = st->l1.bc;
1487         if (open_hfcpcistate(st->l1.hardware, bcs))
1488                 return (-1);
1489         st->l1.bcs = bcs;
1490         st->l2.l2l1 = hfcpci_l2l1;
1491         setstack_manager(st);
1492         bcs->st = st;
1493         setstack_l1_B(st);
1494         return (0);
1495 }
1496
1497 /***************************/
1498 /* handle L1 state changes */
1499 /***************************/
1500 static void
1501 hfcpci_bh(struct work_struct *work)
1502 {
1503         struct IsdnCardState *cs =
1504                 container_of(work, struct IsdnCardState, tqueue);
1505         u_long  flags;
1506 //      struct PStack *stptr;
1507
1508         if (!cs)
1509                 return;
1510         if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
1511                 if (!cs->hw.hfcpci.nt_mode)
1512                         switch (cs->dc.hfcpci.ph_state) {
1513                                 case (0):
1514                                         l1_msg(cs, HW_RESET | INDICATION, NULL);
1515                                         break;
1516                                 case (3):
1517                                         l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
1518                                         break;
1519                                 case (8):
1520                                         l1_msg(cs, HW_RSYNC | INDICATION, NULL);
1521                                         break;
1522                                 case (6):
1523                                         l1_msg(cs, HW_INFO2 | INDICATION, NULL);
1524                                         break;
1525                                 case (7):
1526                                         l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
1527                                         break;
1528                                 default:
1529                                         break;
1530                 } else {
1531                         spin_lock_irqsave(&cs->lock, flags);
1532                         switch (cs->dc.hfcpci.ph_state) {
1533                                 case (2):
1534                                         if (cs->hw.hfcpci.nt_timer < 0) {
1535                                                 cs->hw.hfcpci.nt_timer = 0;
1536                                                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1537                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1538                                                 /* Clear already pending ints */
1539                                                 if (Read_hfc(cs, HFCPCI_INT_S1));
1540                                                 Write_hfc(cs, HFCPCI_STATES, 4 | HFCPCI_LOAD_STATE);
1541                                                 udelay(10);
1542                                                 Write_hfc(cs, HFCPCI_STATES, 4);
1543                                                 cs->dc.hfcpci.ph_state = 4;
1544                                         } else {
1545                                                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_TIMER;
1546                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1547                                                 cs->hw.hfcpci.ctmt &= ~HFCPCI_AUTO_TIMER;
1548                                                 cs->hw.hfcpci.ctmt |= HFCPCI_TIM3_125;
1549                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1550                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1551                                                 cs->hw.hfcpci.nt_timer = NT_T1_COUNT;
1552                                                 Write_hfc(cs, HFCPCI_STATES, 2 | HFCPCI_NT_G2_G3);      /* allow G2 -> G3 transition */
1553                                         }
1554                                         break;
1555                                 case (1):
1556                                 case (3):
1557                                 case (4):
1558                                         cs->hw.hfcpci.nt_timer = 0;
1559                                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1560                                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1561                                         break;
1562                                 default:
1563                                         break;
1564                         }
1565                         spin_unlock_irqrestore(&cs->lock, flags);
1566                 }
1567         }
1568         if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
1569                 DChannel_proc_rcv(cs);
1570         if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
1571                 DChannel_proc_xmt(cs);
1572 }
1573
1574
1575 /********************************/
1576 /* called for card init message */
1577 /********************************/
1578 static void
1579 inithfcpci(struct IsdnCardState *cs)
1580 {
1581         cs->bcs[0].BC_SetStack = setstack_2b;
1582         cs->bcs[1].BC_SetStack = setstack_2b;
1583         cs->bcs[0].BC_Close = close_hfcpci;
1584         cs->bcs[1].BC_Close = close_hfcpci;
1585         cs->dbusytimer.function = (void *) hfcpci_dbusy_timer;
1586         cs->dbusytimer.data = (long) cs;
1587         init_timer(&cs->dbusytimer);
1588         mode_hfcpci(cs->bcs, 0, 0);
1589         mode_hfcpci(cs->bcs + 1, 0, 1);
1590 }
1591
1592
1593
1594 /*******************************************/
1595 /* handle card messages from control layer */
1596 /*******************************************/
1597 static int
1598 hfcpci_card_msg(struct IsdnCardState *cs, int mt, void *arg)
1599 {
1600         u_long flags;
1601
1602         if (cs->debug & L1_DEB_ISAC)
1603                 debugl1(cs, "HFCPCI: card_msg %x", mt);
1604         switch (mt) {
1605                 case CARD_RESET:
1606                         spin_lock_irqsave(&cs->lock, flags);
1607                         reset_hfcpci(cs);
1608                         spin_unlock_irqrestore(&cs->lock, flags);
1609                         return (0);
1610                 case CARD_RELEASE:
1611                         release_io_hfcpci(cs);
1612                         return (0);
1613                 case CARD_INIT:
1614                         spin_lock_irqsave(&cs->lock, flags);
1615                         inithfcpci(cs);
1616                         reset_hfcpci(cs);
1617                         spin_unlock_irqrestore(&cs->lock, flags);
1618                         msleep(80);                             /* Timeout 80ms */
1619                         /* now switch timer interrupt off */
1620                         spin_lock_irqsave(&cs->lock, flags);
1621                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1622                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1623                         /* reinit mode reg */
1624                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1625                         spin_unlock_irqrestore(&cs->lock, flags);
1626                         return (0);
1627                 case CARD_TEST:
1628                         return (0);
1629         }
1630         return (0);
1631 }
1632
1633
1634 /* this variable is used as card index when more than one cards are present */
1635 static struct pci_dev *dev_hfcpci __devinitdata = NULL;
1636
1637 int __devinit
1638 setup_hfcpci(struct IsdnCard *card)
1639 {
1640         u_long flags;
1641         struct IsdnCardState *cs = card->cs;
1642         char tmp[64];
1643         int i;
1644         struct pci_dev *tmp_hfcpci = NULL;
1645
1646 #ifdef __BIG_ENDIAN
1647 #error "not running on big endian machines now"
1648 #endif
1649
1650         strcpy(tmp, hfcpci_revision);
1651         printk(KERN_INFO "HiSax: HFC-PCI driver Rev. %s\n", HiSax_getrev(tmp));
1652
1653         cs->hw.hfcpci.int_s1 = 0;
1654         cs->dc.hfcpci.ph_state = 0;
1655         cs->hw.hfcpci.fifo = 255;
1656         if (cs->typ != ISDN_CTYPE_HFC_PCI)
1657                 return(0);
1658
1659         i = 0;
1660         while (id_list[i].vendor_id) {
1661                 tmp_hfcpci = pci_find_device(id_list[i].vendor_id,
1662                                              id_list[i].device_id,
1663                                              dev_hfcpci);
1664                 i++;
1665                 if (tmp_hfcpci) {
1666                         if (pci_enable_device(tmp_hfcpci))
1667                                 continue;
1668                         pci_set_master(tmp_hfcpci);
1669                         if ((card->para[0]) && (card->para[0] != (tmp_hfcpci->resource[ 0].start & PCI_BASE_ADDRESS_IO_MASK)))
1670                                 continue;
1671                         else
1672                                 break;
1673                 }
1674         }
1675
1676         if (!tmp_hfcpci) {
1677                 printk(KERN_WARNING "HFC-PCI: No PCI card found\n");
1678                 return (0);
1679         }
1680
1681         i--;
1682         dev_hfcpci = tmp_hfcpci;        /* old device */
1683         cs->hw.hfcpci.dev = dev_hfcpci;
1684         cs->irq = dev_hfcpci->irq;
1685         if (!cs->irq) {
1686                 printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
1687                 return (0);
1688         }
1689         cs->hw.hfcpci.pci_io = (char *)(unsigned long)dev_hfcpci->resource[1].start;
1690         printk(KERN_INFO "HiSax: HFC-PCI card manufacturer: %s card name: %s\n", id_list[i].vendor_name, id_list[i].card_name);
1691
1692         if (!cs->hw.hfcpci.pci_io) {
1693                 printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n");
1694                 return (0);
1695         }
1696         /* Allocate memory for FIFOS */
1697         /* Because the HFC-PCI needs a 32K physical alignment, we */
1698         /* need to allocate the double mem and align the address */
1699         if (!(cs->hw.hfcpci.share_start = kmalloc(65536, GFP_KERNEL))) {
1700                 printk(KERN_WARNING "HFC-PCI: Error allocating memory for FIFO!\n");
1701                 return 0;
1702         }
1703         cs->hw.hfcpci.fifos = (void *)
1704             (((ulong) cs->hw.hfcpci.share_start) & ~0x7FFF) + 0x8000;
1705         pci_write_config_dword(cs->hw.hfcpci.dev, 0x80, (u_int) virt_to_bus(cs->hw.hfcpci.fifos));
1706         cs->hw.hfcpci.pci_io = ioremap((ulong) cs->hw.hfcpci.pci_io, 256);
1707         printk(KERN_INFO
1708                "HFC-PCI: defined at mem %p fifo %p(%#x) IRQ %d HZ %d\n",
1709                cs->hw.hfcpci.pci_io,
1710                cs->hw.hfcpci.fifos,
1711                (u_int) virt_to_bus(cs->hw.hfcpci.fifos),
1712                cs->irq, HZ);
1713
1714         spin_lock_irqsave(&cs->lock, flags);
1715
1716         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
1717         cs->hw.hfcpci.int_m2 = 0;       /* disable alle interrupts */
1718         cs->hw.hfcpci.int_m1 = 0;
1719         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1720         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
1721         /* At this point the needed PCI config is done */
1722         /* fifos are still not enabled */
1723
1724         INIT_WORK(&cs->tqueue,  hfcpci_bh);
1725         cs->setstack_d = setstack_hfcpci;
1726         cs->BC_Send_Data = &hfcpci_send_data;
1727         cs->readisac = NULL;
1728         cs->writeisac = NULL;
1729         cs->readisacfifo = NULL;
1730         cs->writeisacfifo = NULL;
1731         cs->BC_Read_Reg = NULL;
1732         cs->BC_Write_Reg = NULL;
1733         cs->irq_func = &hfcpci_interrupt;
1734         cs->irq_flags |= IRQF_SHARED;
1735         cs->hw.hfcpci.timer.function = (void *) hfcpci_Timer;
1736         cs->hw.hfcpci.timer.data = (long) cs;
1737         init_timer(&cs->hw.hfcpci.timer);
1738         cs->cardmsg = &hfcpci_card_msg;
1739         cs->auxcmd = &hfcpci_auxcmd;
1740
1741         spin_unlock_irqrestore(&cs->lock, flags);
1742
1743         return (1);
1744 }