git.oblomov.eu Git - linux-2.6/blob - 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         pci_free_consistent(cs->hw.hfcpci.dev, 0x8000,
  86                 cs->hw.hfcpci.fifos, cs->hw.hfcpci.dma);
  87         cs->hw.hfcpci.fifos = NULL;
  88         iounmap((void *)cs->hw.hfcpci.pci_io);
  89 }
  90
  91 /********************************************************************************/
  92 /* function called to reset the HFC PCI chip. A complete software reset of chip */
  93 /* and fifos is done.                                                           */
  94 /********************************************************************************/
  95 static void
  96 reset_hfcpci(struct IsdnCardState *cs)
  97 {
  98         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
  99         cs->hw.hfcpci.int_m2 = 0;       /* interrupt output off ! */
 100         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 101
 102         printk(KERN_INFO "HFC_PCI: resetting card\n");
 103         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO + PCI_ENA_MASTER);  /* enable memory ports + busmaster */
 104         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);       /* Reset On */
 105         mdelay(10);
 106         Write_hfc(cs, HFCPCI_CIRM, 0);  /* Reset Off */
 107         mdelay(10);
 108         if (Read_hfc(cs, HFCPCI_STATUS) & 2)
 109                 printk(KERN_WARNING "HFC-PCI init bit busy\n");
 110
 111         cs->hw.hfcpci.fifo_en = 0x30;   /* only D fifos enabled */
 112         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 113
 114         cs->hw.hfcpci.trm = 0 + HFCPCI_BTRANS_THRESMASK;        /* no echo connect , threshold */
 115         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 116
 117         Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_TE); /* ST-Bit delay for TE-Mode */
 118         cs->hw.hfcpci.sctrl_e = HFCPCI_AUTO_AWAKE;
 119         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);   /* S/T Auto awake */
 120         cs->hw.hfcpci.bswapped = 0;     /* no exchange */
 121         cs->hw.hfcpci.nt_mode = 0;      /* we are in TE mode */
 122         cs->hw.hfcpci.ctmt = HFCPCI_TIM3_125 | HFCPCI_AUTO_TIMER;
 123         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 124
 125         cs->hw.hfcpci.int_m1 = HFCPCI_INTS_DTRANS | HFCPCI_INTS_DREC |
 126             HFCPCI_INTS_L1STATE | HFCPCI_INTS_TIMER;
 127         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 128
 129         /* Clear already pending ints */
 130         if (Read_hfc(cs, HFCPCI_INT_S1));
 131
 132         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 2);    /* HFC ST 2 */
 133         udelay(10);
 134         Write_hfc(cs, HFCPCI_STATES, 2);        /* HFC ST 2 */
 135         cs->hw.hfcpci.mst_m = HFCPCI_MASTER;    /* HFC Master Mode */
 136
 137         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
 138         cs->hw.hfcpci.sctrl = 0x40;     /* set tx_lo mode, error in datasheet ! */
 139         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 140         cs->hw.hfcpci.sctrl_r = 0;
 141         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 142
 143         /* Init GCI/IOM2 in master mode */
 144         /* Slots 0 and 1 are set for B-chan 1 and 2 */
 145         /* D- and monitor/CI channel are not enabled */
 146         /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */
 147         /* STIO2 is used as data input, B1+B2 from IOM->ST */
 148         /* ST B-channel send disabled -> continous 1s */
 149         /* The IOM slots are always enabled */
 150         cs->hw.hfcpci.conn = 0x36;      /* set data flow directions */
 151         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 152         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* B1-Slot 0 STIO1 out enabled */
 153         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* B2-Slot 1 STIO1 out enabled */
 154         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* B1-Slot 0 STIO2 in enabled */
 155         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* B2-Slot 1 STIO2 in enabled */
 156
 157         /* Finally enable IRQ output */
 158         cs->hw.hfcpci.int_m2 = HFCPCI_IRQ_ENABLE;
 159         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 160         if (Read_hfc(cs, HFCPCI_INT_S1));
 161 }
 162
 163 /***************************************************/
 164 /* Timer function called when kernel timer expires */
 165 /***************************************************/
 166 static void
 167 hfcpci_Timer(struct IsdnCardState *cs)
 168 {
 169         cs->hw.hfcpci.timer.expires = jiffies + 75;
 170         /* WD RESET */
 171 /*      WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcpci.ctmt | 0x80);
 172    add_timer(&cs->hw.hfcpci.timer);
 173  */
 174 }
 175
 176
 177 /*********************************/
 178 /* schedule a new D-channel task */
 179 /*********************************/
 180 static void
 181 sched_event_D_pci(struct IsdnCardState *cs, int event)
 182 {
 183         test_and_set_bit(event, &cs->event);
 184         schedule_work(&cs->tqueue);
 185 }
 186
 187 /*********************************/
 188 /* schedule a new b_channel task */
 189 /*********************************/
 190 static void
 191 hfcpci_sched_event(struct BCState *bcs, int event)
 192 {
 193         test_and_set_bit(event, &bcs->event);
 194         schedule_work(&bcs->tqueue);
 195 }
 196
 197 /************************************************/
 198 /* select a b-channel entry matching and active */
 199 /************************************************/
 200 static
 201 struct BCState *
 202 Sel_BCS(struct IsdnCardState *cs, int channel)
 203 {
 204         if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
 205                 return (&cs->bcs[0]);
 206         else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
 207                 return (&cs->bcs[1]);
 208         else
 209                 return (NULL);
 210 }
 211
 212 /***************************************/
 213 /* clear the desired B-channel rx fifo */
 214 /***************************************/
 215 static void hfcpci_clear_fifo_rx(struct IsdnCardState *cs, int fifo)
 216 {       u_char fifo_state;
 217         bzfifo_type *bzr;
 218
 219         if (fifo) {
 220                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 221                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2RX;
 222         } else {
 223                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 224                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1RX;
 225         }
 226         if (fifo_state)
 227                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 228         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 229         cs->hw.hfcpci.last_bfifo_cnt[fifo] = 0;
 230         bzr->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 231         bzr->za[MAX_B_FRAMES].z2 = bzr->za[MAX_B_FRAMES].z1;
 232         bzr->f1 = MAX_B_FRAMES;
 233         bzr->f2 = bzr->f1;      /* init F pointers to remain constant */
 234         if (fifo_state)
 235                 cs->hw.hfcpci.fifo_en |= fifo_state;
 236         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 237 }
 238
 239 /***************************************/
 240 /* clear the desired B-channel tx fifo */
 241 /***************************************/
 242 static void hfcpci_clear_fifo_tx(struct IsdnCardState *cs, int fifo)
 243 {       u_char fifo_state;
 244         bzfifo_type *bzt;
 245
 246         if (fifo) {
 247                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 248                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2TX;
 249         } else {
 250                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 251                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1TX;
 252         }
 253         if (fifo_state)
 254                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 255         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 256         bzt->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 257         bzt->za[MAX_B_FRAMES].z2 = bzt->za[MAX_B_FRAMES].z1;
 258         bzt->f1 = MAX_B_FRAMES;
 259         bzt->f2 = bzt->f1;      /* init F pointers to remain constant */
 260         if (fifo_state)
 261                 cs->hw.hfcpci.fifo_en |= fifo_state;
 262         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 263 }
 264
 265 /*********************************************/
 266 /* read a complete B-frame out of the buffer */
 267 /*********************************************/
 268 static struct sk_buff
 269 *
 270 hfcpci_empty_fifo(struct BCState *bcs, bzfifo_type * bz, u_char * bdata, int count)
 271 {
 272         u_char *ptr, *ptr1, new_f2;
 273         struct sk_buff *skb;
 274         struct IsdnCardState *cs = bcs->cs;
 275         int total, maxlen, new_z2;
 276         z_type *zp;
 277
 278         if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
 279                 debugl1(cs, "hfcpci_empty_fifo");
 280         zp = &bz->za[bz->f2];   /* point to Z-Regs */
 281         new_z2 = zp->z2 + count;        /* new position in fifo */
 282         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 283                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 284         new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 285         if ((count > HSCX_BUFMAX + 3) || (count < 4) ||
 286             (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 287                 if (cs->debug & L1_DEB_WARN)
 288                         debugl1(cs, "hfcpci_empty_fifo: incoming packet invalid length %d or crc", count);
 289 #ifdef ERROR_STATISTIC
 290                 bcs->err_inv++;
 291 #endif
 292                 bz->za[new_f2].z2 = new_z2;
 293                 bz->f2 = new_f2;        /* next buffer */
 294                 skb = NULL;
 295         } else if (!(skb = dev_alloc_skb(count - 3)))
 296                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 297         else {
 298                 total = count;
 299                 count -= 3;
 300                 ptr = skb_put(skb, count);
 301
 302                 if (zp->z2 + count <= B_FIFO_SIZE + B_SUB_VAL)
 303                         maxlen = count;         /* complete transfer */
 304                 else
 305                         maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 306
 307                 ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 308                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 309                 count -= maxlen;
 310
 311                 if (count) {    /* rest remaining */
 312                         ptr += maxlen;
 313                         ptr1 = bdata;   /* start of buffer */
 314                         memcpy(ptr, ptr1, count);       /* rest */
 315                 }
 316                 bz->za[new_f2].z2 = new_z2;
 317                 bz->f2 = new_f2;        /* next buffer */
 318
 319         }
 320         return (skb);
 321 }
 322
 323 /*******************************/
 324 /* D-channel receive procedure */
 325 /*******************************/
 326 static
 327 int
 328 receive_dmsg(struct IsdnCardState *cs)
 329 {
 330         struct sk_buff *skb;
 331         int maxlen;
 332         int rcnt, total;
 333         int count = 5;
 334         u_char *ptr, *ptr1;
 335         dfifo_type *df;
 336         z_type *zp;
 337
 338         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_rx;
 339         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 340                 debugl1(cs, "rec_dmsg blocked");
 341                 return (1);
 342         }
 343         while (((df->f1 & D_FREG_MASK) != (df->f2 & D_FREG_MASK)) && count--) {
 344                 zp = &df->za[df->f2 & D_FREG_MASK];
 345                 rcnt = zp->z1 - zp->z2;
 346                 if (rcnt < 0)
 347                         rcnt += D_FIFO_SIZE;
 348                 rcnt++;
 349                 if (cs->debug & L1_DEB_ISAC)
 350                         debugl1(cs, "hfcpci recd f1(%d) f2(%d) z1(%x) z2(%x) cnt(%d)",
 351                                 df->f1, df->f2, zp->z1, zp->z2, rcnt);
 352
 353                 if ((rcnt > MAX_DFRAME_LEN + 3) || (rcnt < 4) ||
 354                     (df->data[zp->z1])) {
 355                         if (cs->debug & L1_DEB_WARN)
 356                                 debugl1(cs, "empty_fifo hfcpci paket inv. len %d or crc %d", rcnt, df->data[zp->z1]);
 357 #ifdef ERROR_STATISTIC
 358                         cs->err_rx++;
 359 #endif
 360                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 361                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + rcnt) & (D_FIFO_SIZE - 1);
 362                 } else if ((skb = dev_alloc_skb(rcnt - 3))) {
 363                         total = rcnt;
 364                         rcnt -= 3;
 365                         ptr = skb_put(skb, rcnt);
 366
 367                         if (zp->z2 + rcnt <= D_FIFO_SIZE)
 368                                 maxlen = rcnt;  /* complete transfer */
 369                         else
 370                                 maxlen = D_FIFO_SIZE - zp->z2;  /* maximum */
 371
 372                         ptr1 = df->data + zp->z2;       /* start of data */
 373                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 374                         rcnt -= maxlen;
 375
 376                         if (rcnt) {     /* rest remaining */
 377                                 ptr += maxlen;
 378                                 ptr1 = df->data;        /* start of buffer */
 379                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 380                         }
 381                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 382                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + total) & (D_FIFO_SIZE - 1);
 383
 384                         skb_queue_tail(&cs->rq, skb);
 385                         sched_event_D_pci(cs, D_RCVBUFREADY);
 386                 } else
 387                         printk(KERN_WARNING "HFC-PCI: D receive out of memory\n");
 388         }
 389         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 390         return (1);
 391 }
 392
 393 /*******************************************************************************/
 394 /* check for transparent receive data and read max one threshold size if avail */
 395 /*******************************************************************************/
 396 static int
 397 hfcpci_empty_fifo_trans(struct BCState *bcs, bzfifo_type * bz, u_char * bdata)
 398 {
 399         unsigned short *z1r, *z2r;
 400         int new_z2, fcnt, maxlen;
 401         struct sk_buff *skb;
 402         u_char *ptr, *ptr1;
 403
 404         z1r = &bz->za[MAX_B_FRAMES].z1;         /* pointer to z reg */
 405         z2r = z1r + 1;
 406
 407         if (!(fcnt = *z1r - *z2r))
 408                 return (0);     /* no data avail */
 409
 410         if (fcnt <= 0)
 411                 fcnt += B_FIFO_SIZE;    /* bytes actually buffered */
 412         if (fcnt > HFCPCI_BTRANS_THRESHOLD)
 413                 fcnt = HFCPCI_BTRANS_THRESHOLD;         /* limit size */
 414
 415         new_z2 = *z2r + fcnt;   /* new position in fifo */
 416         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 417                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 418
 419         if (!(skb = dev_alloc_skb(fcnt)))
 420                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 421         else {
 422                 ptr = skb_put(skb, fcnt);
 423                 if (*z2r + fcnt <= B_FIFO_SIZE + B_SUB_VAL)
 424                         maxlen = fcnt;  /* complete transfer */
 425                 else
 426                         maxlen = B_FIFO_SIZE + B_SUB_VAL - *z2r;        /* maximum */
 427
 428                 ptr1 = bdata + (*z2r - B_SUB_VAL);      /* start of data */
 429                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 430                 fcnt -= maxlen;
 431
 432                 if (fcnt) {     /* rest remaining */
 433                         ptr += maxlen;
 434                         ptr1 = bdata;   /* start of buffer */
 435                         memcpy(ptr, ptr1, fcnt);        /* rest */
 436                 }
 437                 skb_queue_tail(&bcs->rqueue, skb);
 438                 hfcpci_sched_event(bcs, B_RCVBUFREADY);
 439         }
 440
 441         *z2r = new_z2;          /* new position */
 442         return (1);
 443 }                               /* hfcpci_empty_fifo_trans */
 444
 445 /**********************************/
 446 /* B-channel main receive routine */
 447 /**********************************/
 448 static void
 449 main_rec_hfcpci(struct BCState *bcs)
 450 {
 451         struct IsdnCardState *cs = bcs->cs;
 452         int rcnt, real_fifo;
 453         int receive, count = 5;
 454         struct sk_buff *skb;
 455         bzfifo_type *bz;
 456         u_char *bdata;
 457         z_type *zp;
 458
 459
 460         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 461                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 462                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 463                 real_fifo = 1;
 464         } else {
 465                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 466                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b1;
 467                 real_fifo = 0;
 468         }
 469       Begin:
 470         count--;
 471         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 472                 debugl1(cs, "rec_data %d blocked", bcs->channel);
 473                 return;
 474         }
 475         if (bz->f1 != bz->f2) {
 476                 if (cs->debug & L1_DEB_HSCX)
 477                         debugl1(cs, "hfcpci rec %d f1(%d) f2(%d)",
 478                                 bcs->channel, bz->f1, bz->f2);
 479                 zp = &bz->za[bz->f2];
 480
 481                 rcnt = zp->z1 - zp->z2;
 482                 if (rcnt < 0)
 483                         rcnt += B_FIFO_SIZE;
 484                 rcnt++;
 485                 if (cs->debug & L1_DEB_HSCX)
 486                         debugl1(cs, "hfcpci rec %d z1(%x) z2(%x) cnt(%d)",
 487                                 bcs->channel, zp->z1, zp->z2, rcnt);
 488                 if ((skb = hfcpci_empty_fifo(bcs, bz, bdata, rcnt))) {
 489                         skb_queue_tail(&bcs->rqueue, skb);
 490                         hfcpci_sched_event(bcs, B_RCVBUFREADY);
 491                 }
 492                 rcnt = bz->f1 - bz->f2;
 493                 if (rcnt < 0)
 494                         rcnt += MAX_B_FRAMES + 1;
 495                 if (cs->hw.hfcpci.last_bfifo_cnt[real_fifo] > rcnt + 1) {
 496                         rcnt = 0;
 497                         hfcpci_clear_fifo_rx(cs, real_fifo);
 498                 }
 499                 cs->hw.hfcpci.last_bfifo_cnt[real_fifo] = rcnt;
 500                 if (rcnt > 1)
 501                         receive = 1;
 502                 else
 503                         receive = 0;
 504         } else if (bcs->mode == L1_MODE_TRANS)
 505                 receive = hfcpci_empty_fifo_trans(bcs, bz, bdata);
 506         else
 507                 receive = 0;
 508         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 509         if (count && receive)
 510                 goto Begin;
 511 }
 512
 513 /**************************/
 514 /* D-channel send routine */
 515 /**************************/
 516 static void
 517 hfcpci_fill_dfifo(struct IsdnCardState *cs)
 518 {
 519         int fcnt;
 520         int count, new_z1, maxlen;
 521         dfifo_type *df;
 522         u_char *src, *dst, new_f1;
 523
 524         if (!cs->tx_skb)
 525                 return;
 526         if (cs->tx_skb->len <= 0)
 527                 return;
 528
 529         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_tx;
 530
 531         if (cs->debug & L1_DEB_ISAC)
 532                 debugl1(cs, "hfcpci_fill_Dfifo f1(%d) f2(%d) z1(f1)(%x)",
 533                         df->f1, df->f2,
 534                         df->za[df->f1 & D_FREG_MASK].z1);
 535         fcnt = df->f1 - df->f2; /* frame count actually buffered */
 536         if (fcnt < 0)
 537                 fcnt += (MAX_D_FRAMES + 1);     /* if wrap around */
 538         if (fcnt > (MAX_D_FRAMES - 1)) {
 539                 if (cs->debug & L1_DEB_ISAC)
 540                         debugl1(cs, "hfcpci_fill_Dfifo more as 14 frames");
 541 #ifdef ERROR_STATISTIC
 542                 cs->err_tx++;
 543 #endif
 544                 return;
 545         }
 546         /* now determine free bytes in FIFO buffer */
 547         count = df->za[df->f2 & D_FREG_MASK].z2 - df->za[df->f1 & D_FREG_MASK].z1 - 1;
 548         if (count <= 0)
 549                 count += D_FIFO_SIZE;   /* count now contains available bytes */
 550
 551         if (cs->debug & L1_DEB_ISAC)
 552                 debugl1(cs, "hfcpci_fill_Dfifo count(%ld/%d)",
 553                         cs->tx_skb->len, count);
 554         if (count < cs->tx_skb->len) {
 555                 if (cs->debug & L1_DEB_ISAC)
 556                         debugl1(cs, "hfcpci_fill_Dfifo no fifo mem");
 557                 return;
 558         }
 559         count = cs->tx_skb->len;        /* get frame len */
 560         new_z1 = (df->za[df->f1 & D_FREG_MASK].z1 + count) & (D_FIFO_SIZE - 1);
 561         new_f1 = ((df->f1 + 1) & D_FREG_MASK) | (D_FREG_MASK + 1);
 562         src = cs->tx_skb->data; /* source pointer */
 563         dst = df->data + df->za[df->f1 & D_FREG_MASK].z1;
 564         maxlen = D_FIFO_SIZE - df->za[df->f1 & D_FREG_MASK].z1;         /* end fifo */
 565         if (maxlen > count)
 566                 maxlen = count; /* limit size */
 567         memcpy(dst, src, maxlen);       /* first copy */
 568
 569         count -= maxlen;        /* remaining bytes */
 570         if (count) {
 571                 dst = df->data; /* start of buffer */
 572                 src += maxlen;  /* new position */
 573                 memcpy(dst, src, count);
 574         }
 575         df->za[new_f1 & D_FREG_MASK].z1 = new_z1;       /* for next buffer */
 576         df->za[df->f1 & D_FREG_MASK].z1 = new_z1;       /* new pos actual buffer */
 577         df->f1 = new_f1;        /* next frame */
 578
 579         dev_kfree_skb_any(cs->tx_skb);
 580         cs->tx_skb = NULL;
 581 }
 582
 583 /**************************/
 584 /* B-channel send routine */
 585 /**************************/
 586 static void
 587 hfcpci_fill_fifo(struct BCState *bcs)
 588 {
 589         struct IsdnCardState *cs = bcs->cs;
 590         int maxlen, fcnt;
 591         int count, new_z1;
 592         bzfifo_type *bz;
 593         u_char *bdata;
 594         u_char new_f1, *src, *dst;
 595         unsigned short *z1t, *z2t;
 596
 597         if (!bcs->tx_skb)
 598                 return;
 599         if (bcs->tx_skb->len <= 0)
 600                 return;
 601
 602         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 603                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 604                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b2;
 605         } else {
 606                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 607                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b1;
 608         }
 609
 610         if (bcs->mode == L1_MODE_TRANS) {
 611                 z1t = &bz->za[MAX_B_FRAMES].z1;
 612                 z2t = z1t + 1;
 613                 if (cs->debug & L1_DEB_HSCX)
 614                         debugl1(cs, "hfcpci_fill_fifo_trans %d z1(%x) z2(%x)",
 615                                 bcs->channel, *z1t, *z2t);
 616                 fcnt = *z2t - *z1t;
 617                 if (fcnt <= 0)
 618                         fcnt += B_FIFO_SIZE;    /* fcnt contains available bytes in fifo */
 619                 fcnt = B_FIFO_SIZE - fcnt;      /* remaining bytes to send */
 620
 621                 while ((fcnt < 2 * HFCPCI_BTRANS_THRESHOLD) && (bcs->tx_skb)) {
 622                         if (bcs->tx_skb->len < B_FIFO_SIZE - fcnt) {
 623                                 /* data is suitable for fifo */
 624                                 count = bcs->tx_skb->len;
 625
 626                                 new_z1 = *z1t + count;  /* new buffer Position */
 627                                 if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 628                                         new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 629                                 src = bcs->tx_skb->data;        /* source pointer */
 630                                 dst = bdata + (*z1t - B_SUB_VAL);
 631                                 maxlen = (B_FIFO_SIZE + B_SUB_VAL) - *z1t;      /* end of fifo */
 632                                 if (maxlen > count)
 633                                         maxlen = count;         /* limit size */
 634                                 memcpy(dst, src, maxlen);       /* first copy */
 635
 636                                 count -= maxlen;        /* remaining bytes */
 637                                 if (count) {
 638                                         dst = bdata;    /* start of buffer */
 639                                         src += maxlen;  /* new position */
 640                                         memcpy(dst, src, count);
 641                                 }
 642                                 bcs->tx_cnt -= bcs->tx_skb->len;
 643                                 fcnt += bcs->tx_skb->len;
 644                                 *z1t = new_z1;  /* now send data */
 645                         } else if (cs->debug & L1_DEB_HSCX)
 646                                 debugl1(cs, "hfcpci_fill_fifo_trans %d frame length %d discarded",
 647                                         bcs->channel, bcs->tx_skb->len);
 648
 649                         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 650                                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 651                                 u_long  flags;
 652                                 spin_lock_irqsave(&bcs->aclock, flags);
 653                                 bcs->ackcnt += bcs->tx_skb->len;
 654                                 spin_unlock_irqrestore(&bcs->aclock, flags);
 655                                 schedule_event(bcs, B_ACKPENDING);
 656                         }
 657
 658                         dev_kfree_skb_any(bcs->tx_skb);
 659                         bcs->tx_skb = skb_dequeue(&bcs->squeue);        /* fetch next data */
 660                 }
 661                 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 662                 return;
 663         }
 664         if (cs->debug & L1_DEB_HSCX)
 665                 debugl1(cs, "hfcpci_fill_fifo_hdlc %d f1(%d) f2(%d) z1(f1)(%x)",
 666                         bcs->channel, bz->f1, bz->f2,
 667                         bz->za[bz->f1].z1);
 668
 669         fcnt = bz->f1 - bz->f2; /* frame count actually buffered */
 670         if (fcnt < 0)
 671                 fcnt += (MAX_B_FRAMES + 1);     /* if wrap around */
 672         if (fcnt > (MAX_B_FRAMES - 1)) {
 673                 if (cs->debug & L1_DEB_HSCX)
 674                         debugl1(cs, "hfcpci_fill_Bfifo more as 14 frames");
 675                 return;
 676         }
 677         /* now determine free bytes in FIFO buffer */
 678         count = bz->za[bz->f2].z2 - bz->za[bz->f1].z1 - 1;
 679         if (count <= 0)
 680                 count += B_FIFO_SIZE;   /* count now contains available bytes */
 681
 682         if (cs->debug & L1_DEB_HSCX)
 683                 debugl1(cs, "hfcpci_fill_fifo %d count(%ld/%d),%lx",
 684                         bcs->channel, bcs->tx_skb->len,
 685                         count, current->state);
 686
 687         if (count < bcs->tx_skb->len) {
 688                 if (cs->debug & L1_DEB_HSCX)
 689                         debugl1(cs, "hfcpci_fill_fifo no fifo mem");
 690                 return;
 691         }
 692         count = bcs->tx_skb->len;       /* get frame len */
 693         new_z1 = bz->za[bz->f1].z1 + count;     /* new buffer Position */
 694         if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 695                 new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 696
 697         new_f1 = ((bz->f1 + 1) & MAX_B_FRAMES);
 698         src = bcs->tx_skb->data;        /* source pointer */
 699         dst = bdata + (bz->za[bz->f1].z1 - B_SUB_VAL);
 700         maxlen = (B_FIFO_SIZE + B_SUB_VAL) - bz->za[bz->f1].z1;         /* end fifo */
 701         if (maxlen > count)
 702                 maxlen = count; /* limit size */
 703         memcpy(dst, src, maxlen);       /* first copy */
 704
 705         count -= maxlen;        /* remaining bytes */
 706         if (count) {
 707                 dst = bdata;    /* start of buffer */
 708                 src += maxlen;  /* new position */
 709                 memcpy(dst, src, count);
 710         }
 711         bcs->tx_cnt -= bcs->tx_skb->len;
 712         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 713                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 714                 u_long  flags;
 715                 spin_lock_irqsave(&bcs->aclock, flags);
 716                 bcs->ackcnt += bcs->tx_skb->len;
 717                 spin_unlock_irqrestore(&bcs->aclock, flags);
 718                 schedule_event(bcs, B_ACKPENDING);
 719         }
 720
 721         bz->za[new_f1].z1 = new_z1;     /* for next buffer */
 722         bz->f1 = new_f1;        /* next frame */
 723
 724         dev_kfree_skb_any(bcs->tx_skb);
 725         bcs->tx_skb = NULL;
 726         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 727 }
 728
 729 /**********************************************/
 730 /* D-channel l1 state call for leased NT-mode */
 731 /**********************************************/
 732 static void
 733 dch_nt_l2l1(struct PStack *st, int pr, void *arg)
 734 {
 735         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
 736
 737         switch (pr) {
 738                 case (PH_DATA | REQUEST):
 739                 case (PH_PULL | REQUEST):
 740                 case (PH_PULL | INDICATION):
 741                         st->l1.l1hw(st, pr, arg);
 742                         break;
 743                 case (PH_ACTIVATE | REQUEST):
 744                         st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
 745                         break;
 746                 case (PH_TESTLOOP | REQUEST):
 747                         if (1 & (long) arg)
 748                                 debugl1(cs, "PH_TEST_LOOP B1");
 749                         if (2 & (long) arg)
 750                                 debugl1(cs, "PH_TEST_LOOP B2");
 751                         if (!(3 & (long) arg))
 752                                 debugl1(cs, "PH_TEST_LOOP DISABLED");
 753                         st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
 754                         break;
 755                 default:
 756                         if (cs->debug)
 757                                 debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr);
 758                         break;
 759         }
 760 }
 761
 762
 763
 764 /***********************/
 765 /* set/reset echo mode */
 766 /***********************/
 767 static int
 768 hfcpci_auxcmd(struct IsdnCardState *cs, isdn_ctrl * ic)
 769 {
 770         u_long  flags;
 771         int     i = *(unsigned int *) ic->parm.num;
 772
 773         if ((ic->arg == 98) &&
 774             (!(cs->hw.hfcpci.int_m1 & (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC + HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC)))) {
 775                 spin_lock_irqsave(&cs->lock, flags);
 776                 Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_NT); /* ST-Bit delay for NT-Mode */
 777                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 0);    /* HFC ST G0 */
 778                 udelay(10);
 779                 cs->hw.hfcpci.sctrl |= SCTRL_MODE_NT;
 780                 Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);       /* set NT-mode */
 781                 udelay(10);
 782                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 1);    /* HFC ST G1 */
 783                 udelay(10);
 784                 Write_hfc(cs, HFCPCI_STATES, 1 | HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
 785                 cs->dc.hfcpci.ph_state = 1;
 786                 cs->hw.hfcpci.nt_mode = 1;
 787                 cs->hw.hfcpci.nt_timer = 0;
 788                 cs->stlist->l2.l2l1 = dch_nt_l2l1;
 789                 spin_unlock_irqrestore(&cs->lock, flags);
 790                 debugl1(cs, "NT mode activated");
 791                 return (0);
 792         }
 793         if ((cs->chanlimit > 1) || (cs->hw.hfcpci.bswapped) ||
 794             (cs->hw.hfcpci.nt_mode) || (ic->arg != 12))
 795                 return (-EINVAL);
 796
 797         spin_lock_irqsave(&cs->lock, flags);
 798         if (i) {
 799                 cs->logecho = 1;
 800                 cs->hw.hfcpci.trm |= 0x20;      /* enable echo chan */
 801                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_B2REC;
 802                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2RX;
 803         } else {
 804                 cs->logecho = 0;
 805                 cs->hw.hfcpci.trm &= ~0x20;     /* disable echo chan */
 806                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_B2REC;
 807                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2RX;
 808         }
 809         cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
 810         cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
 811         cs->hw.hfcpci.conn |= 0x10;     /* B2-IOM -> B2-ST */
 812         cs->hw.hfcpci.ctmt &= ~2;
 813         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 814         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 815         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 816         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 817         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 818         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 819         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 820         spin_unlock_irqrestore(&cs->lock, flags);
 821         return (0);
 822 }                               /* hfcpci_auxcmd */
 823
 824 /*****************************/
 825 /* E-channel receive routine */
 826 /*****************************/
 827 static void
 828 receive_emsg(struct IsdnCardState *cs)
 829 {
 830         int rcnt;
 831         int receive, count = 5;
 832         bzfifo_type *bz;
 833         u_char *bdata;
 834         z_type *zp;
 835         u_char *ptr, *ptr1, new_f2;
 836         int total, maxlen, new_z2;
 837         u_char e_buffer[256];
 838
 839         bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 840         bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 841       Begin:
 842         count--;
 843         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 844                 debugl1(cs, "echo_rec_data blocked");
 845                 return;
 846         }
 847         if (bz->f1 != bz->f2) {
 848                 if (cs->debug & L1_DEB_ISAC)
 849                         debugl1(cs, "hfcpci e_rec f1(%d) f2(%d)",
 850                                 bz->f1, bz->f2);
 851                 zp = &bz->za[bz->f2];
 852
 853                 rcnt = zp->z1 - zp->z2;
 854                 if (rcnt < 0)
 855                         rcnt += B_FIFO_SIZE;
 856                 rcnt++;
 857                 if (cs->debug & L1_DEB_ISAC)
 858                         debugl1(cs, "hfcpci e_rec z1(%x) z2(%x) cnt(%d)",
 859                                 zp->z1, zp->z2, rcnt);
 860                 new_z2 = zp->z2 + rcnt;         /* new position in fifo */
 861                 if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 862                         new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 863                 new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 864                 if ((rcnt > 256 + 3) || (count < 4) ||
 865                     (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 866                         if (cs->debug & L1_DEB_WARN)
 867                                 debugl1(cs, "hfcpci_empty_echan: incoming packet invalid length %d or crc", rcnt);
 868                         bz->za[new_f2].z2 = new_z2;
 869                         bz->f2 = new_f2;        /* next buffer */
 870                 } else {
 871                         total = rcnt;
 872                         rcnt -= 3;
 873                         ptr = e_buffer;
 874
 875                         if (zp->z2 <= B_FIFO_SIZE + B_SUB_VAL)
 876                                 maxlen = rcnt;  /* complete transfer */
 877                         else
 878                                 maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 879
 880                         ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 881                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 882                         rcnt -= maxlen;
 883
 884                         if (rcnt) {     /* rest remaining */
 885                                 ptr += maxlen;
 886                                 ptr1 = bdata;   /* start of buffer */
 887                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 888                         }
 889                         bz->za[new_f2].z2 = new_z2;
 890                         bz->f2 = new_f2;        /* next buffer */
 891                         if (cs->debug & DEB_DLOG_HEX) {
 892                                 ptr = cs->dlog;
 893                                 if ((total - 3) < MAX_DLOG_SPACE / 3 - 10) {
 894                                         *ptr++ = 'E';
 895                                         *ptr++ = 'C';
 896                                         *ptr++ = 'H';
 897                                         *ptr++ = 'O';
 898                                         *ptr++ = ':';
 899                                         ptr += QuickHex(ptr, e_buffer, total - 3);
 900                                         ptr--;
 901                                         *ptr++ = '\n';
 902                                         *ptr = 0;
 903                                         HiSax_putstatus(cs, NULL, cs->dlog);
 904                                 } else
 905                                         HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", total - 3);
 906                         }
 907                 }
 908
 909                 rcnt = bz->f1 - bz->f2;
 910                 if (rcnt < 0)
 911                         rcnt += MAX_B_FRAMES + 1;
 912                 if (rcnt > 1)
 913                         receive = 1;
 914                 else
 915                         receive = 0;
 916         } else
 917                 receive = 0;
 918         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 919         if (count && receive)
 920                 goto Begin;
 921 }                               /* receive_emsg */
 922
 923 /*********************/
 924 /* Interrupt handler */
 925 /*********************/
 926 static irqreturn_t
 927 hfcpci_interrupt(int intno, void *dev_id)
 928 {
 929         u_long flags;
 930         struct IsdnCardState *cs = dev_id;
 931         u_char exval;
 932         struct BCState *bcs;
 933         int count = 15;
 934         u_char val, stat;
 935
 936         if (!(cs->hw.hfcpci.int_m2 & 0x08)) {
 937                 debugl1(cs, "HFC-PCI: int_m2 %x not initialised", cs->hw.hfcpci.int_m2);
 938                 return IRQ_NONE;        /* not initialised */
 939         }
 940         spin_lock_irqsave(&cs->lock, flags);
 941         if (HFCPCI_ANYINT & (stat = Read_hfc(cs, HFCPCI_STATUS))) {
 942                 val = Read_hfc(cs, HFCPCI_INT_S1);
 943                 if (cs->debug & L1_DEB_ISAC)
 944                         debugl1(cs, "HFC-PCI: stat(%02x) s1(%02x)", stat, val);
 945         } else {
 946                 spin_unlock_irqrestore(&cs->lock, flags);
 947                 return IRQ_NONE;
 948         }
 949         if (cs->debug & L1_DEB_ISAC)
 950                 debugl1(cs, "HFC-PCI irq %x %s", val,
 951                         test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
 952                         "locked" : "unlocked");
 953         val &= cs->hw.hfcpci.int_m1;
 954         if (val & 0x40) {       /* state machine irq */
 955                 exval = Read_hfc(cs, HFCPCI_STATES) & 0xf;
 956                 if (cs->debug & L1_DEB_ISAC)
 957                         debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcpci.ph_state,
 958                                 exval);
 959                 cs->dc.hfcpci.ph_state = exval;
 960                 sched_event_D_pci(cs, D_L1STATECHANGE);
 961                 val &= ~0x40;
 962         }
 963         if (val & 0x80) {       /* timer irq */
 964                 if (cs->hw.hfcpci.nt_mode) {
 965                         if ((--cs->hw.hfcpci.nt_timer) < 0)
 966                                 sched_event_D_pci(cs, D_L1STATECHANGE);
 967                 }
 968                 val &= ~0x80;
 969                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
 970         }
 971         while (val) {
 972                 if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 973                         cs->hw.hfcpci.int_s1 |= val;
 974                         spin_unlock_irqrestore(&cs->lock, flags);
 975                         return IRQ_HANDLED;
 976                 }
 977                 if (cs->hw.hfcpci.int_s1 & 0x18) {
 978                         exval = val;
 979                         val = cs->hw.hfcpci.int_s1;
 980                         cs->hw.hfcpci.int_s1 = exval;
 981                 }
 982                 if (val & 0x08) {
 983                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
 984                                 if (cs->debug)
 985                                         debugl1(cs, "hfcpci spurious 0x08 IRQ");
 986                         } else
 987                                 main_rec_hfcpci(bcs);
 988                 }
 989                 if (val & 0x10) {
 990                         if (cs->logecho)
 991                                 receive_emsg(cs);
 992                         else if (!(bcs = Sel_BCS(cs, 1))) {
 993                                 if (cs->debug)
 994                                         debugl1(cs, "hfcpci spurious 0x10 IRQ");
 995                         } else
 996                                 main_rec_hfcpci(bcs);
 997                 }
 998                 if (val & 0x01) {
 999                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
1000                                 if (cs->debug)
1001                                         debugl1(cs, "hfcpci spurious 0x01 IRQ");
1002                         } else {
1003                                 if (bcs->tx_skb) {
1004                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1005                                                 hfcpci_fill_fifo(bcs);
1006                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1007                                         } else
1008                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1009                                 } else {
1010                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1011                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1012                                                         hfcpci_fill_fifo(bcs);
1013                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1014                                                 } else
1015                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1016                                         } else {
1017                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1018                                         }
1019                                 }
1020                         }
1021                 }
1022                 if (val & 0x02) {
1023                         if (!(bcs = Sel_BCS(cs, 1))) {
1024                                 if (cs->debug)
1025                                         debugl1(cs, "hfcpci spurious 0x02 IRQ");
1026                         } else {
1027                                 if (bcs->tx_skb) {
1028                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1029                                                 hfcpci_fill_fifo(bcs);
1030                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1031                                         } else
1032                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1033                                 } else {
1034                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1035                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1036                                                         hfcpci_fill_fifo(bcs);
1037                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1038                                                 } else
1039                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1040                                         } else {
1041                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1042                                         }
1043                                 }
1044                         }
1045                 }
1046                 if (val & 0x20) {       /* receive dframe */
1047                         receive_dmsg(cs);
1048                 }
1049                 if (val & 0x04) {       /* dframe transmitted */
1050                         if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
1051                                 del_timer(&cs->dbusytimer);
1052                         if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
1053                                 sched_event_D_pci(cs, D_CLEARBUSY);
1054                         if (cs->tx_skb) {
1055                                 if (cs->tx_skb->len) {
1056                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1057                                                 hfcpci_fill_dfifo(cs);
1058                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1059                                         } else {
1060                                                 debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1061                                         }
1062                                         goto afterXPR;
1063                                 } else {
1064                                         dev_kfree_skb_irq(cs->tx_skb);
1065                                         cs->tx_cnt = 0;
1066                                         cs->tx_skb = NULL;
1067                                 }
1068                         }
1069                         if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
1070                                 cs->tx_cnt = 0;
1071                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1072                                         hfcpci_fill_dfifo(cs);
1073                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1074                                 } else {
1075                                         debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1076                                 }
1077                         } else
1078                                 sched_event_D_pci(cs, D_XMTBUFREADY);
1079                 }
1080               afterXPR:
1081                 if (cs->hw.hfcpci.int_s1 && count--) {
1082                         val = cs->hw.hfcpci.int_s1;
1083                         cs->hw.hfcpci.int_s1 = 0;
1084                         if (cs->debug & L1_DEB_ISAC)
1085                                 debugl1(cs, "HFC-PCI irq %x loop %d", val, 15 - count);
1086                 } else
1087                         val = 0;
1088         }
1089         spin_unlock_irqrestore(&cs->lock, flags);
1090         return IRQ_HANDLED;
1091 }
1092
1093 /********************************************************************/
1094 /* timer callback for D-chan busy resolution. Currently no function */
1095 /********************************************************************/
1096 static void
1097 hfcpci_dbusy_timer(struct IsdnCardState *cs)
1098 {
1099 }
1100
1101 /*************************************/
1102 /* Layer 1 D-channel hardware access */
1103 /*************************************/
1104 static void
1105 HFCPCI_l1hw(struct PStack *st, int pr, void *arg)
1106 {
1107         u_long flags;
1108         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
1109         struct sk_buff *skb = arg;
1110
1111         switch (pr) {
1112                 case (PH_DATA | REQUEST):
1113                         if (cs->debug & DEB_DLOG_HEX)
1114                                 LogFrame(cs, skb->data, skb->len);
1115                         if (cs->debug & DEB_DLOG_VERBOSE)
1116                                 dlogframe(cs, skb, 0);
1117                         spin_lock_irqsave(&cs->lock, flags);
1118                         if (cs->tx_skb) {
1119                                 skb_queue_tail(&cs->sq, skb);
1120 #ifdef L2FRAME_DEBUG            /* psa */
1121                                 if (cs->debug & L1_DEB_LAPD)
1122                                         Logl2Frame(cs, skb, "PH_DATA Queued", 0);
1123 #endif
1124                         } else {
1125                                 cs->tx_skb = skb;
1126                                 cs->tx_cnt = 0;
1127 #ifdef L2FRAME_DEBUG            /* psa */
1128                                 if (cs->debug & L1_DEB_LAPD)
1129                                         Logl2Frame(cs, skb, "PH_DATA", 0);
1130 #endif
1131                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1132                                         hfcpci_fill_dfifo(cs);
1133                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1134                                 } else
1135                                         debugl1(cs, "hfcpci_fill_dfifo blocked");
1136
1137                         }
1138                         spin_unlock_irqrestore(&cs->lock, flags);
1139                         break;
1140                 case (PH_PULL | INDICATION):
1141                         spin_lock_irqsave(&cs->lock, flags);
1142                         if (cs->tx_skb) {
1143                                 if (cs->debug & L1_DEB_WARN)
1144                                         debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
1145                                 skb_queue_tail(&cs->sq, skb);
1146                                 spin_unlock_irqrestore(&cs->lock, flags);
1147                                 break;
1148                         }
1149                         if (cs->debug & DEB_DLOG_HEX)
1150                                 LogFrame(cs, skb->data, skb->len);
1151                         if (cs->debug & DEB_DLOG_VERBOSE)
1152                                 dlogframe(cs, skb, 0);
1153                         cs->tx_skb = skb;
1154                         cs->tx_cnt = 0;
1155 #ifdef L2FRAME_DEBUG            /* psa */
1156                         if (cs->debug & L1_DEB_LAPD)
1157                                 Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
1158 #endif
1159                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1160                                 hfcpci_fill_dfifo(cs);
1161                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1162                         } else
1163                                 debugl1(cs, "hfcpci_fill_dfifo blocked");
1164                         spin_unlock_irqrestore(&cs->lock, flags);
1165                         break;
1166                 case (PH_PULL | REQUEST):
1167 #ifdef L2FRAME_DEBUG            /* psa */
1168                         if (cs->debug & L1_DEB_LAPD)
1169                                 debugl1(cs, "-> PH_REQUEST_PULL");
1170 #endif
1171                         if (!cs->tx_skb) {
1172                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1173                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1174                         } else
1175                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1176                         break;
1177                 case (HW_RESET | REQUEST):
1178                         spin_lock_irqsave(&cs->lock, flags);
1179                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 3);    /* HFC ST 3 */
1180                         udelay(6);
1181                         Write_hfc(cs, HFCPCI_STATES, 3);        /* HFC ST 2 */
1182                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1183                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1184                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
1185                         spin_unlock_irqrestore(&cs->lock, flags);
1186                         l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
1187                         break;
1188                 case (HW_ENABLE | REQUEST):
1189                         spin_lock_irqsave(&cs->lock, flags);
1190                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_DO_ACTION);
1191                         spin_unlock_irqrestore(&cs->lock, flags);
1192                         break;
1193                 case (HW_DEACTIVATE | REQUEST):
1194                         spin_lock_irqsave(&cs->lock, flags);
1195                         cs->hw.hfcpci.mst_m &= ~HFCPCI_MASTER;
1196                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1197                         spin_unlock_irqrestore(&cs->lock, flags);
1198                         break;
1199                 case (HW_INFO3 | REQUEST):
1200                         spin_lock_irqsave(&cs->lock, flags);
1201                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1202                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1203                         spin_unlock_irqrestore(&cs->lock, flags);
1204                         break;
1205                 case (HW_TESTLOOP | REQUEST):
1206                         spin_lock_irqsave(&cs->lock, flags);
1207                         switch ((long) arg) {
1208                                 case (1):
1209                                         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* tx slot */
1210                                         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* rx slot */
1211                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~7) | 1;
1212                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1213                                         break;
1214
1215                                 case (2):
1216                                         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* tx slot */
1217                                         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* rx slot */
1218                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~0x38) | 0x08;
1219                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1220                                         break;
1221
1222                                 default:
1223                                         spin_unlock_irqrestore(&cs->lock, flags);
1224                                         if (cs->debug & L1_DEB_WARN)
1225                                                 debugl1(cs, "hfcpci_l1hw loop invalid %4lx", (long) arg);
1226                                         return;
1227                         }
1228                         cs->hw.hfcpci.trm |= 0x80;      /* enable IOM-loop */
1229                         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
1230                         spin_unlock_irqrestore(&cs->lock, flags);
1231                         break;
1232                 default:
1233                         if (cs->debug & L1_DEB_WARN)
1234                                 debugl1(cs, "hfcpci_l1hw unknown pr %4x", pr);
1235                         break;
1236         }
1237 }
1238
1239 /***********************************************/
1240 /* called during init setting l1 stack pointer */
1241 /***********************************************/
1242 static void
1243 setstack_hfcpci(struct PStack *st, struct IsdnCardState *cs)
1244 {
1245         st->l1.l1hw = HFCPCI_l1hw;
1246 }
1247
1248 /**************************************/
1249 /* send B-channel data if not blocked */
1250 /**************************************/
1251 static void
1252 hfcpci_send_data(struct BCState *bcs)
1253 {
1254         struct IsdnCardState *cs = bcs->cs;
1255
1256         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1257                 hfcpci_fill_fifo(bcs);
1258                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1259         } else
1260                 debugl1(cs, "send_data %d blocked", bcs->channel);
1261 }
1262
1263 /***************************************************************/
1264 /* activate/deactivate hardware for selected channels and mode */
1265 /***************************************************************/
1266 static void
1267 mode_hfcpci(struct BCState *bcs, int mode, int bc)
1268 {
1269         struct IsdnCardState *cs = bcs->cs;
1270         int fifo2;
1271
1272         if (cs->debug & L1_DEB_HSCX)
1273                 debugl1(cs, "HFCPCI bchannel mode %d bchan %d/%d",
1274                         mode, bc, bcs->channel);
1275         bcs->mode = mode;
1276         bcs->channel = bc;
1277         fifo2 = bc;
1278         if (cs->chanlimit > 1) {
1279                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1280                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1281         } else {
1282                 if (bc) {
1283                         if (mode != L1_MODE_NULL) {
1284                                 cs->hw.hfcpci.bswapped = 1;     /* B1 and B2 exchanged */
1285                                 cs->hw.hfcpci.sctrl_e |= 0x80;
1286                         } else {
1287                                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1288                                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1289                         }
1290                         fifo2 = 0;
1291                 } else {
1292                         cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1293                         cs->hw.hfcpci.sctrl_e &= ~0x80;
1294                 }
1295         }
1296         switch (mode) {
1297                 case (L1_MODE_NULL):
1298                         if (bc) {
1299                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
1300                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
1301                         } else {
1302                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B1_ENA;
1303                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B1_ENA;
1304                         }
1305                         if (fifo2) {
1306                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1307                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1308                         } else {
1309                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1310                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1311                         }
1312                         break;
1313                 case (L1_MODE_TRANS):
1314                         hfcpci_clear_fifo_rx(cs, fifo2);
1315                         hfcpci_clear_fifo_tx(cs, fifo2);
1316                         if (bc) {
1317                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1318                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1319                         } else {
1320                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1321                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1322                         }
1323                         if (fifo2) {
1324                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1325                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1326                                 cs->hw.hfcpci.ctmt |= 2;
1327                                 cs->hw.hfcpci.conn &= ~0x18;
1328                         } else {
1329                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1330                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1331                                 cs->hw.hfcpci.ctmt |= 1;
1332                                 cs->hw.hfcpci.conn &= ~0x03;
1333                         }
1334                         break;
1335                 case (L1_MODE_HDLC):
1336                         hfcpci_clear_fifo_rx(cs, fifo2);
1337                         hfcpci_clear_fifo_tx(cs, fifo2);
1338                         if (bc) {
1339                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1340                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1341                         } else {
1342                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1343                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1344                         }
1345                         if (fifo2) {
1346                                 cs->hw.hfcpci.last_bfifo_cnt[1] = 0;
1347                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1348                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1349                                 cs->hw.hfcpci.ctmt &= ~2;
1350                                 cs->hw.hfcpci.conn &= ~0x18;
1351                         } else {
1352                                 cs->hw.hfcpci.last_bfifo_cnt[0] = 0;
1353                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1354                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1355                                 cs->hw.hfcpci.ctmt &= ~1;
1356                                 cs->hw.hfcpci.conn &= ~0x03;
1357                         }
1358                         break;
1359                 case (L1_MODE_EXTRN):
1360                         if (bc) {
1361                                 cs->hw.hfcpci.conn |= 0x10;
1362                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1363                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1364                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1365                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1366                         } else {
1367                                 cs->hw.hfcpci.conn |= 0x02;
1368                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1369                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1370                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1371                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1372                         }
1373                         break;
1374         }
1375         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);
1376         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1377         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
1378         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
1379         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
1380         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
1381         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1382 }
1383
1384 /******************************/
1385 /* Layer2 -> Layer 1 Transfer */
1386 /******************************/
1387 static void
1388 hfcpci_l2l1(struct PStack *st, int pr, void *arg)
1389 {
1390         struct BCState  *bcs = st->l1.bcs;
1391         u_long          flags;
1392         struct sk_buff  *skb = arg;
1393
1394         switch (pr) {
1395                 case (PH_DATA | REQUEST):
1396                         spin_lock_irqsave(&bcs->cs->lock, flags);
1397                         if (bcs->tx_skb) {
1398                                 skb_queue_tail(&bcs->squeue, skb);
1399                         } else {
1400                                 bcs->tx_skb = skb;
1401 //                              test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1402                                 bcs->cs->BC_Send_Data(bcs);
1403                         }
1404                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1405                         break;
1406                 case (PH_PULL | INDICATION):
1407                         spin_lock_irqsave(&bcs->cs->lock, flags);
1408                         if (bcs->tx_skb) {
1409                                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1410                                 printk(KERN_WARNING "hfc_l2l1: this shouldn't happen\n");
1411                                 break;
1412                         }
1413 //                      test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1414                         bcs->tx_skb = skb;
1415                         bcs->cs->BC_Send_Data(bcs);
1416                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1417                         break;
1418                 case (PH_PULL | REQUEST):
1419                         if (!bcs->tx_skb) {
1420                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1421                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1422                         } else
1423                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1424                         break;
1425                 case (PH_ACTIVATE | REQUEST):
1426                         spin_lock_irqsave(&bcs->cs->lock, flags);
1427                         test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
1428                         mode_hfcpci(bcs, st->l1.mode, st->l1.bc);
1429                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1430                         l1_msg_b(st, pr, arg);
1431                         break;
1432                 case (PH_DEACTIVATE | REQUEST):
1433                         l1_msg_b(st, pr, arg);
1434                         break;
1435                 case (PH_DEACTIVATE | CONFIRM):
1436                         spin_lock_irqsave(&bcs->cs->lock, flags);
1437                         test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
1438                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1439                         mode_hfcpci(bcs, 0, st->l1.bc);
1440                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1441                         st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
1442                         break;
1443         }
1444 }
1445
1446 /******************************************/
1447 /* deactivate B-channel access and queues */
1448 /******************************************/
1449 static void
1450 close_hfcpci(struct BCState *bcs)
1451 {
1452         mode_hfcpci(bcs, 0, bcs->channel);
1453         if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
1454                 skb_queue_purge(&bcs->rqueue);
1455                 skb_queue_purge(&bcs->squeue);
1456                 if (bcs->tx_skb) {
1457                         dev_kfree_skb_any(bcs->tx_skb);
1458                         bcs->tx_skb = NULL;
1459                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1460                 }
1461         }
1462 }
1463
1464 /*************************************/
1465 /* init B-channel queues and control */
1466 /*************************************/
1467 static int
1468 open_hfcpcistate(struct IsdnCardState *cs, struct BCState *bcs)
1469 {
1470         if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
1471                 skb_queue_head_init(&bcs->rqueue);
1472                 skb_queue_head_init(&bcs->squeue);
1473         }
1474         bcs->tx_skb = NULL;
1475         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1476         bcs->event = 0;
1477         bcs->tx_cnt = 0;
1478         return (0);
1479 }
1480
1481 /*********************************/
1482 /* inits the stack for B-channel */
1483 /*********************************/
1484 static int
1485 setstack_2b(struct PStack *st, struct BCState *bcs)
1486 {
1487         bcs->channel = st->l1.bc;
1488         if (open_hfcpcistate(st->l1.hardware, bcs))
1489                 return (-1);
1490         st->l1.bcs = bcs;
1491         st->l2.l2l1 = hfcpci_l2l1;
1492         setstack_manager(st);
1493         bcs->st = st;
1494         setstack_l1_B(st);
1495         return (0);
1496 }
1497
1498 /***************************/
1499 /* handle L1 state changes */
1500 /***************************/
1501 static void
1502 hfcpci_bh(struct work_struct *work)
1503 {
1504         struct IsdnCardState *cs =
1505                 container_of(work, struct IsdnCardState, tqueue);
1506         u_long  flags;
1507 //      struct PStack *stptr;
1508
1509         if (!cs)
1510                 return;
1511         if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
1512                 if (!cs->hw.hfcpci.nt_mode)
1513                         switch (cs->dc.hfcpci.ph_state) {
1514                                 case (0):
1515                                         l1_msg(cs, HW_RESET | INDICATION, NULL);
1516                                         break;
1517                                 case (3):
1518                                         l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
1519                                         break;
1520                                 case (8):
1521                                         l1_msg(cs, HW_RSYNC | INDICATION, NULL);
1522                                         break;
1523                                 case (6):
1524                                         l1_msg(cs, HW_INFO2 | INDICATION, NULL);
1525                                         break;
1526                                 case (7):
1527                                         l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
1528                                         break;
1529                                 default:
1530                                         break;
1531                 } else {
1532                         spin_lock_irqsave(&cs->lock, flags);
1533                         switch (cs->dc.hfcpci.ph_state) {
1534                                 case (2):
1535                                         if (cs->hw.hfcpci.nt_timer < 0) {
1536                                                 cs->hw.hfcpci.nt_timer = 0;
1537                                                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1538                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1539                                                 /* Clear already pending ints */
1540                                                 if (Read_hfc(cs, HFCPCI_INT_S1));
1541                                                 Write_hfc(cs, HFCPCI_STATES, 4 | HFCPCI_LOAD_STATE);
1542                                                 udelay(10);
1543                                                 Write_hfc(cs, HFCPCI_STATES, 4);
1544                                                 cs->dc.hfcpci.ph_state = 4;
1545                                         } else {
1546                                                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_TIMER;
1547                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1548                                                 cs->hw.hfcpci.ctmt &= ~HFCPCI_AUTO_TIMER;
1549                                                 cs->hw.hfcpci.ctmt |= HFCPCI_TIM3_125;
1550                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1551                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1552                                                 cs->hw.hfcpci.nt_timer = NT_T1_COUNT;
1553                                                 Write_hfc(cs, HFCPCI_STATES, 2 | HFCPCI_NT_G2_G3);      /* allow G2 -> G3 transition */
1554                                         }
1555                                         break;
1556                                 case (1):
1557                                 case (3):
1558                                 case (4):
1559                                         cs->hw.hfcpci.nt_timer = 0;
1560                                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1561                                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1562                                         break;
1563                                 default:
1564                                         break;
1565                         }
1566                         spin_unlock_irqrestore(&cs->lock, flags);
1567                 }
1568         }
1569         if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
1570                 DChannel_proc_rcv(cs);
1571         if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
1572                 DChannel_proc_xmt(cs);
1573 }
1574
1575
1576 /********************************/
1577 /* called for card init message */
1578 /********************************/
1579 static void
1580 inithfcpci(struct IsdnCardState *cs)
1581 {
1582         cs->bcs[0].BC_SetStack = setstack_2b;
1583         cs->bcs[1].BC_SetStack = setstack_2b;
1584         cs->bcs[0].BC_Close = close_hfcpci;
1585         cs->bcs[1].BC_Close = close_hfcpci;
1586         cs->dbusytimer.function = (void *) hfcpci_dbusy_timer;
1587         cs->dbusytimer.data = (long) cs;
1588         init_timer(&cs->dbusytimer);
1589         mode_hfcpci(cs->bcs, 0, 0);
1590         mode_hfcpci(cs->bcs + 1, 0, 1);
1591 }
1592
1593
1594
1595 /*******************************************/
1596 /* handle card messages from control layer */
1597 /*******************************************/
1598 static int
1599 hfcpci_card_msg(struct IsdnCardState *cs, int mt, void *arg)
1600 {
1601         u_long flags;
1602
1603         if (cs->debug & L1_DEB_ISAC)
1604                 debugl1(cs, "HFCPCI: card_msg %x", mt);
1605         switch (mt) {
1606                 case CARD_RESET:
1607                         spin_lock_irqsave(&cs->lock, flags);
1608                         reset_hfcpci(cs);
1609                         spin_unlock_irqrestore(&cs->lock, flags);
1610                         return (0);
1611                 case CARD_RELEASE:
1612                         release_io_hfcpci(cs);
1613                         return (0);
1614                 case CARD_INIT:
1615                         spin_lock_irqsave(&cs->lock, flags);
1616                         inithfcpci(cs);
1617                         reset_hfcpci(cs);
1618                         spin_unlock_irqrestore(&cs->lock, flags);
1619                         msleep(80);                             /* Timeout 80ms */
1620                         /* now switch timer interrupt off */
1621                         spin_lock_irqsave(&cs->lock, flags);
1622                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1623                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1624                         /* reinit mode reg */
1625                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1626                         spin_unlock_irqrestore(&cs->lock, flags);
1627                         return (0);
1628                 case CARD_TEST:
1629                         return (0);
1630         }
1631         return (0);
1632 }
1633
1634
1635 /* this variable is used as card index when more than one cards are present */
1636 static struct pci_dev *dev_hfcpci __devinitdata = NULL;
1637
1638 int __devinit
1639 setup_hfcpci(struct IsdnCard *card)
1640 {
1641         u_long flags;
1642         struct IsdnCardState *cs = card->cs;
1643         char tmp[64];
1644         int i;
1645         struct pci_dev *tmp_hfcpci = NULL;
1646
1647 #ifdef __BIG_ENDIAN
1648 #error "not running on big endian machines now"
1649 #endif
1650
1651         strcpy(tmp, hfcpci_revision);
1652         printk(KERN_INFO "HiSax: HFC-PCI driver Rev. %s\n", HiSax_getrev(tmp));
1653
1654         cs->hw.hfcpci.int_s1 = 0;
1655         cs->dc.hfcpci.ph_state = 0;
1656         cs->hw.hfcpci.fifo = 255;
1657         if (cs->typ != ISDN_CTYPE_HFC_PCI)
1658                 return(0);
1659
1660         i = 0;
1661         while (id_list[i].vendor_id) {
1662                 tmp_hfcpci = pci_find_device(id_list[i].vendor_id,
1663                                              id_list[i].device_id,
1664                                              dev_hfcpci);
1665                 i++;
1666                 if (tmp_hfcpci) {
1667                         dma_addr_t      dma_mask = DMA_BIT_MASK(32) & ~0x7fffUL;
1668                         if (pci_enable_device(tmp_hfcpci))
1669                                 continue;
1670                         if (pci_set_dma_mask(tmp_hfcpci, dma_mask)) {
1671                                 printk(KERN_WARNING
1672                                         "HiSax hfc_pci: No suitable DMA available.\n");
1673                                 continue;
1674                         }
1675                         if (pci_set_consistent_dma_mask(tmp_hfcpci, dma_mask)) {
1676                                 printk(KERN_WARNING
1677                                         "HiSax hfc_pci: No suitable consistent DMA available.\n");
1678                                 continue;
1679                         }
1680                         pci_set_master(tmp_hfcpci);
1681                         if ((card->para[0]) && (card->para[0] != (tmp_hfcpci->resource[ 0].start & PCI_BASE_ADDRESS_IO_MASK)))
1682                                 continue;
1683                         else
1684                                 break;
1685                 }
1686         }
1687
1688         if (!tmp_hfcpci) {
1689                 printk(KERN_WARNING "HFC-PCI: No PCI card found\n");
1690                 return (0);
1691         }
1692
1693         i--;
1694         dev_hfcpci = tmp_hfcpci;        /* old device */
1695         cs->hw.hfcpci.dev = dev_hfcpci;
1696         cs->irq = dev_hfcpci->irq;
1697         if (!cs->irq) {
1698                 printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
1699                 return (0);
1700         }
1701         cs->hw.hfcpci.pci_io = (char *)(unsigned long)dev_hfcpci->resource[1].start;
1702         printk(KERN_INFO "HiSax: HFC-PCI card manufacturer: %s card name: %s\n", id_list[i].vendor_name, id_list[i].card_name);
1703
1704         if (!cs->hw.hfcpci.pci_io) {
1705                 printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n");
1706                 return (0);
1707         }
1708
1709         /* Allocate memory for FIFOS */
1710         cs->hw.hfcpci.fifos = pci_alloc_consistent(cs->hw.hfcpci.dev,
1711                                         0x8000, &cs->hw.hfcpci.dma);
1712         if (!cs->hw.hfcpci.fifos) {
1713                 printk(KERN_WARNING "HFC-PCI: Error allocating FIFO memory!\n");
1714                 return 0;
1715         }
1716         if (cs->hw.hfcpci.dma & 0x7fff) {
1717                 printk(KERN_WARNING
1718                     "HFC-PCI: Error DMA memory not on 32K boundary (%lx)\n",
1719                     (u_long)cs->hw.hfcpci.dma);
1720                 pci_free_consistent(cs->hw.hfcpci.dev, 0x8000,
1721                         cs->hw.hfcpci.fifos, cs->hw.hfcpci.dma);
1722                 return 0;
1723         }
1724         pci_write_config_dword(cs->hw.hfcpci.dev, 0x80, (u32)cs->hw.hfcpci.dma);
1725         cs->hw.hfcpci.pci_io = ioremap((ulong) cs->hw.hfcpci.pci_io, 256);
1726         printk(KERN_INFO
1727                "HFC-PCI: defined at mem %p fifo %p(%lx) IRQ %d HZ %d\n",
1728                cs->hw.hfcpci.pci_io,
1729                cs->hw.hfcpci.fifos,
1730                (u_long)cs->hw.hfcpci.dma,
1731                cs->irq, HZ);
1732
1733         spin_lock_irqsave(&cs->lock, flags);
1734
1735         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
1736         cs->hw.hfcpci.int_m2 = 0;       /* disable alle interrupts */
1737         cs->hw.hfcpci.int_m1 = 0;
1738         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1739         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
1740         /* At this point the needed PCI config is done */
1741         /* fifos are still not enabled */
1742
1743         INIT_WORK(&cs->tqueue,  hfcpci_bh);
1744         cs->setstack_d = setstack_hfcpci;
1745         cs->BC_Send_Data = &hfcpci_send_data;
1746         cs->readisac = NULL;
1747         cs->writeisac = NULL;
1748         cs->readisacfifo = NULL;
1749         cs->writeisacfifo = NULL;
1750         cs->BC_Read_Reg = NULL;
1751         cs->BC_Write_Reg = NULL;
1752         cs->irq_func = &hfcpci_interrupt;
1753         cs->irq_flags |= IRQF_SHARED;
1754         cs->hw.hfcpci.timer.function = (void *) hfcpci_Timer;
1755         cs->hw.hfcpci.timer.data = (long) cs;
1756         init_timer(&cs->hw.hfcpci.timer);
1757         cs->cardmsg = &hfcpci_card_msg;
1758         cs->auxcmd = &hfcpci_auxcmd;
1759
1760         spin_unlock_irqrestore(&cs->lock, flags);
1761
1762         return (1);
1763 }