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 <linux/config.h>
  20 #include "hisax.h"
  21 #include "hfc_pci.h"
  22 #include "isdnl1.h"
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25
  26 extern const char *CardType[];
  27
  28 static const char *hfcpci_revision = "$Revision: 1.48.2.4 $";
  29
  30 /* table entry in the PCI devices list */
  31 typedef struct {
  32         int vendor_id;
  33         int device_id;
  34         char *vendor_name;
  35         char *card_name;
  36 } PCI_ENTRY;
  37
  38 #define NT_T1_COUNT     20      /* number of 3.125ms interrupts for G2 timeout */
  39 #define CLKDEL_TE       0x0e    /* CLKDEL in TE mode */
  40 #define CLKDEL_NT       0x6c    /* CLKDEL in NT mode */
  41
  42 static const PCI_ENTRY id_list[] =
  43 {
  44         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_2BD0, "CCD/Billion/Asuscom", "2BD0"},
  45         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B000, "Billion", "B000"},
  46         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B006, "Billion", "B006"},
  47         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B007, "Billion", "B007"},
  48         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B008, "Billion", "B008"},
  49         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B009, "Billion", "B009"},
  50         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00A, "Billion", "B00A"},
  51         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00B, "Billion", "B00B"},
  52         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00C, "Billion", "B00C"},
  53         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B100, "Seyeon", "B100"},
  54         {PCI_VENDOR_ID_ABOCOM, PCI_DEVICE_ID_ABOCOM_2BD1, "Abocom/Magitek", "2BD1"},
  55         {PCI_VENDOR_ID_ASUSTEK, PCI_DEVICE_ID_ASUSTEK_0675, "Asuscom/Askey", "675"},
  56         {PCI_VENDOR_ID_BERKOM, PCI_DEVICE_ID_BERKOM_T_CONCEPT, "German telekom", "T-Concept"},
  57         {PCI_VENDOR_ID_BERKOM, PCI_DEVICE_ID_BERKOM_A1T, "German telekom", "A1T"},
  58         {PCI_VENDOR_ID_ANIGMA, PCI_DEVICE_ID_ANIGMA_MC145575, "Motorola MC145575", "MC145575"},
  59         {PCI_VENDOR_ID_ZOLTRIX, PCI_DEVICE_ID_ZOLTRIX_2BD0, "Zoltrix", "2BD0"},
  60         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_IOM2_E,"Digi International", "Digi DataFire Micro V IOM2 (Europe)"},
  61         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_E,"Digi International", "Digi DataFire Micro V (Europe)"},
  62         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_IOM2_A,"Digi International", "Digi DataFire Micro V IOM2 (North America)"},
  63         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_A,"Digi International", "Digi DataFire Micro V (North America)"},
  64         {0, 0, NULL, NULL},
  65 };
  66
  67
  68 #ifdef CONFIG_PCI
  69
  70 /******************************************/
  71 /* free hardware resources used by driver */
  72 /******************************************/
  73 void
  74 release_io_hfcpci(struct IsdnCardState *cs)
  75 {
  76         printk(KERN_INFO "HiSax: release hfcpci at %p\n",
  77                 cs->hw.hfcpci.pci_io);
  78         cs->hw.hfcpci.int_m2 = 0;                                       /* interrupt output off ! */
  79         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  80         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);                       /* Reset On */
  81         mdelay(10);
  82         Write_hfc(cs, HFCPCI_CIRM, 0);                                  /* Reset Off */
  83         mdelay(10);
  84         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  85         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, 0);       /* disable memory mapped ports + busmaster */
  86         del_timer(&cs->hw.hfcpci.timer);
  87         kfree(cs->hw.hfcpci.share_start);
  88         cs->hw.hfcpci.share_start = NULL;
  89         iounmap((void *)cs->hw.hfcpci.pci_io);
  90 }
  91
  92 /********************************************************************************/
  93 /* function called to reset the HFC PCI chip. A complete software reset of chip */
  94 /* and fifos is done.                                                           */
  95 /********************************************************************************/
  96 static void
  97 reset_hfcpci(struct IsdnCardState *cs)
  98 {
  99         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
 100         cs->hw.hfcpci.int_m2 = 0;       /* interrupt output off ! */
 101         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 102
 103         printk(KERN_INFO "HFC_PCI: resetting card\n");
 104         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO + PCI_ENA_MASTER);  /* enable memory ports + busmaster */
 105         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);       /* Reset On */
 106         mdelay(10);
 107         Write_hfc(cs, HFCPCI_CIRM, 0);  /* Reset Off */
 108         mdelay(10);
 109         if (Read_hfc(cs, HFCPCI_STATUS) & 2)
 110                 printk(KERN_WARNING "HFC-PCI init bit busy\n");
 111
 112         cs->hw.hfcpci.fifo_en = 0x30;   /* only D fifos enabled */
 113         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 114
 115         cs->hw.hfcpci.trm = 0 + HFCPCI_BTRANS_THRESMASK;        /* no echo connect , threshold */
 116         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 117
 118         Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_TE); /* ST-Bit delay for TE-Mode */
 119         cs->hw.hfcpci.sctrl_e = HFCPCI_AUTO_AWAKE;
 120         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);   /* S/T Auto awake */
 121         cs->hw.hfcpci.bswapped = 0;     /* no exchange */
 122         cs->hw.hfcpci.nt_mode = 0;      /* we are in TE mode */
 123         cs->hw.hfcpci.ctmt = HFCPCI_TIM3_125 | HFCPCI_AUTO_TIMER;
 124         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 125
 126         cs->hw.hfcpci.int_m1 = HFCPCI_INTS_DTRANS | HFCPCI_INTS_DREC |
 127             HFCPCI_INTS_L1STATE | HFCPCI_INTS_TIMER;
 128         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 129
 130         /* Clear already pending ints */
 131         if (Read_hfc(cs, HFCPCI_INT_S1));
 132
 133         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 2);    /* HFC ST 2 */
 134         udelay(10);
 135         Write_hfc(cs, HFCPCI_STATES, 2);        /* HFC ST 2 */
 136         cs->hw.hfcpci.mst_m = HFCPCI_MASTER;    /* HFC Master Mode */
 137
 138         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
 139         cs->hw.hfcpci.sctrl = 0x40;     /* set tx_lo mode, error in datasheet ! */
 140         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 141         cs->hw.hfcpci.sctrl_r = 0;
 142         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 143
 144         /* Init GCI/IOM2 in master mode */
 145         /* Slots 0 and 1 are set for B-chan 1 and 2 */
 146         /* D- and monitor/CI channel are not enabled */
 147         /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */
 148         /* STIO2 is used as data input, B1+B2 from IOM->ST */
 149         /* ST B-channel send disabled -> continous 1s */
 150         /* The IOM slots are always enabled */
 151         cs->hw.hfcpci.conn = 0x36;      /* set data flow directions */
 152         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 153         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* B1-Slot 0 STIO1 out enabled */
 154         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* B2-Slot 1 STIO1 out enabled */
 155         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* B1-Slot 0 STIO2 in enabled */
 156         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* B2-Slot 1 STIO2 in enabled */
 157
 158         /* Finally enable IRQ output */
 159         cs->hw.hfcpci.int_m2 = HFCPCI_IRQ_ENABLE;
 160         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 161         if (Read_hfc(cs, HFCPCI_INT_S1));
 162 }
 163
 164 /***************************************************/
 165 /* Timer function called when kernel timer expires */
 166 /***************************************************/
 167 static void
 168 hfcpci_Timer(struct IsdnCardState *cs)
 169 {
 170         cs->hw.hfcpci.timer.expires = jiffies + 75;
 171         /* WD RESET */
 172 /*      WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcpci.ctmt | 0x80);
 173    add_timer(&cs->hw.hfcpci.timer);
 174  */
 175 }
 176
 177
 178 /*********************************/
 179 /* schedule a new D-channel task */
 180 /*********************************/
 181 static void
 182 sched_event_D_pci(struct IsdnCardState *cs, int event)
 183 {
 184         test_and_set_bit(event, &cs->event);
 185         schedule_work(&cs->tqueue);
 186 }
 187
 188 /*********************************/
 189 /* schedule a new b_channel task */
 190 /*********************************/
 191 static void
 192 hfcpci_sched_event(struct BCState *bcs, int event)
 193 {
 194         test_and_set_bit(event, &bcs->event);
 195         schedule_work(&bcs->tqueue);
 196 }
 197
 198 /************************************************/
 199 /* select a b-channel entry matching and active */
 200 /************************************************/
 201 static
 202 struct BCState *
 203 Sel_BCS(struct IsdnCardState *cs, int channel)
 204 {
 205         if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
 206                 return (&cs->bcs[0]);
 207         else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
 208                 return (&cs->bcs[1]);
 209         else
 210                 return (NULL);
 211 }
 212
 213 /***************************************/
 214 /* clear the desired B-channel rx fifo */
 215 /***************************************/
 216 static void hfcpci_clear_fifo_rx(struct IsdnCardState *cs, int fifo)
 217 {       u_char fifo_state;
 218         bzfifo_type *bzr;
 219
 220         if (fifo) {
 221                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 222                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2RX;
 223         } else {
 224                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 225                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1RX;
 226         }
 227         if (fifo_state)
 228                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 229         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 230         cs->hw.hfcpci.last_bfifo_cnt[fifo] = 0;
 231         bzr->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 232         bzr->za[MAX_B_FRAMES].z2 = bzr->za[MAX_B_FRAMES].z1;
 233         bzr->f1 = MAX_B_FRAMES;
 234         bzr->f2 = bzr->f1;      /* init F pointers to remain constant */
 235         if (fifo_state)
 236                 cs->hw.hfcpci.fifo_en |= fifo_state;
 237         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 238 }
 239
 240 /***************************************/
 241 /* clear the desired B-channel tx fifo */
 242 /***************************************/
 243 static void hfcpci_clear_fifo_tx(struct IsdnCardState *cs, int fifo)
 244 {       u_char fifo_state;
 245         bzfifo_type *bzt;
 246
 247         if (fifo) {
 248                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 249                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2TX;
 250         } else {
 251                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 252                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1TX;
 253         }
 254         if (fifo_state)
 255                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 256         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 257         bzt->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 258         bzt->za[MAX_B_FRAMES].z2 = bzt->za[MAX_B_FRAMES].z1;
 259         bzt->f1 = MAX_B_FRAMES;
 260         bzt->f2 = bzt->f1;      /* init F pointers to remain constant */
 261         if (fifo_state)
 262                 cs->hw.hfcpci.fifo_en |= fifo_state;
 263         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 264 }
 265
 266 /*********************************************/
 267 /* read a complete B-frame out of the buffer */
 268 /*********************************************/
 269 static struct sk_buff
 270 *
 271 hfcpci_empty_fifo(struct BCState *bcs, bzfifo_type * bz, u_char * bdata, int count)
 272 {
 273         u_char *ptr, *ptr1, new_f2;
 274         struct sk_buff *skb;
 275         struct IsdnCardState *cs = bcs->cs;
 276         int total, maxlen, new_z2;
 277         z_type *zp;
 278
 279         if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
 280                 debugl1(cs, "hfcpci_empty_fifo");
 281         zp = &bz->za[bz->f2];   /* point to Z-Regs */
 282         new_z2 = zp->z2 + count;        /* new position in fifo */
 283         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 284                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 285         new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 286         if ((count > HSCX_BUFMAX + 3) || (count < 4) ||
 287             (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 288                 if (cs->debug & L1_DEB_WARN)
 289                         debugl1(cs, "hfcpci_empty_fifo: incoming packet invalid length %d or crc", count);
 290 #ifdef ERROR_STATISTIC
 291                 bcs->err_inv++;
 292 #endif
 293                 bz->za[new_f2].z2 = new_z2;
 294                 bz->f2 = new_f2;        /* next buffer */
 295                 skb = NULL;
 296         } else if (!(skb = dev_alloc_skb(count - 3)))
 297                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 298         else {
 299                 total = count;
 300                 count -= 3;
 301                 ptr = skb_put(skb, count);
 302
 303                 if (zp->z2 + count <= B_FIFO_SIZE + B_SUB_VAL)
 304                         maxlen = count;         /* complete transfer */
 305                 else
 306                         maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 307
 308                 ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 309                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 310                 count -= maxlen;
 311
 312                 if (count) {    /* rest remaining */
 313                         ptr += maxlen;
 314                         ptr1 = bdata;   /* start of buffer */
 315                         memcpy(ptr, ptr1, count);       /* rest */
 316                 }
 317                 bz->za[new_f2].z2 = new_z2;
 318                 bz->f2 = new_f2;        /* next buffer */
 319
 320         }
 321         return (skb);
 322 }
 323
 324 /*******************************/
 325 /* D-channel receive procedure */
 326 /*******************************/
 327 static
 328 int
 329 receive_dmsg(struct IsdnCardState *cs)
 330 {
 331         struct sk_buff *skb;
 332         int maxlen;
 333         int rcnt, total;
 334         int count = 5;
 335         u_char *ptr, *ptr1;
 336         dfifo_type *df;
 337         z_type *zp;
 338
 339         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_rx;
 340         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 341                 debugl1(cs, "rec_dmsg blocked");
 342                 return (1);
 343         }
 344         while (((df->f1 & D_FREG_MASK) != (df->f2 & D_FREG_MASK)) && count--) {
 345                 zp = &df->za[df->f2 & D_FREG_MASK];
 346                 rcnt = zp->z1 - zp->z2;
 347                 if (rcnt < 0)
 348                         rcnt += D_FIFO_SIZE;
 349                 rcnt++;
 350                 if (cs->debug & L1_DEB_ISAC)
 351                         debugl1(cs, "hfcpci recd f1(%d) f2(%d) z1(%x) z2(%x) cnt(%d)",
 352                                 df->f1, df->f2, zp->z1, zp->z2, rcnt);
 353
 354                 if ((rcnt > MAX_DFRAME_LEN + 3) || (rcnt < 4) ||
 355                     (df->data[zp->z1])) {
 356                         if (cs->debug & L1_DEB_WARN)
 357                                 debugl1(cs, "empty_fifo hfcpci paket inv. len %d or crc %d", rcnt, df->data[zp->z1]);
 358 #ifdef ERROR_STATISTIC
 359                         cs->err_rx++;
 360 #endif
 361                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 362                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + rcnt) & (D_FIFO_SIZE - 1);
 363                 } else if ((skb = dev_alloc_skb(rcnt - 3))) {
 364                         total = rcnt;
 365                         rcnt -= 3;
 366                         ptr = skb_put(skb, rcnt);
 367
 368                         if (zp->z2 + rcnt <= D_FIFO_SIZE)
 369                                 maxlen = rcnt;  /* complete transfer */
 370                         else
 371                                 maxlen = D_FIFO_SIZE - zp->z2;  /* maximum */
 372
 373                         ptr1 = df->data + zp->z2;       /* start of data */
 374                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 375                         rcnt -= maxlen;
 376
 377                         if (rcnt) {     /* rest remaining */
 378                                 ptr += maxlen;
 379                                 ptr1 = df->data;        /* start of buffer */
 380                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 381                         }
 382                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 383                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + total) & (D_FIFO_SIZE - 1);
 384
 385                         skb_queue_tail(&cs->rq, skb);
 386                         sched_event_D_pci(cs, D_RCVBUFREADY);
 387                 } else
 388                         printk(KERN_WARNING "HFC-PCI: D receive out of memory\n");
 389         }
 390         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 391         return (1);
 392 }
 393
 394 /*******************************************************************************/
 395 /* check for transparent receive data and read max one threshold size if avail */
 396 /*******************************************************************************/
 397 int
 398 hfcpci_empty_fifo_trans(struct BCState *bcs, bzfifo_type * bz, u_char * bdata)
 399 {
 400         unsigned short *z1r, *z2r;
 401         int new_z2, fcnt, maxlen;
 402         struct sk_buff *skb;
 403         u_char *ptr, *ptr1;
 404
 405         z1r = &bz->za[MAX_B_FRAMES].z1;         /* pointer to z reg */
 406         z2r = z1r + 1;
 407
 408         if (!(fcnt = *z1r - *z2r))
 409                 return (0);     /* no data avail */
 410
 411         if (fcnt <= 0)
 412                 fcnt += B_FIFO_SIZE;    /* bytes actually buffered */
 413         if (fcnt > HFCPCI_BTRANS_THRESHOLD)
 414                 fcnt = HFCPCI_BTRANS_THRESHOLD;         /* limit size */
 415
 416         new_z2 = *z2r + fcnt;   /* new position in fifo */
 417         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 418                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 419
 420         if (!(skb = dev_alloc_skb(fcnt)))
 421                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 422         else {
 423                 ptr = skb_put(skb, fcnt);
 424                 if (*z2r + fcnt <= B_FIFO_SIZE + B_SUB_VAL)
 425                         maxlen = fcnt;  /* complete transfer */
 426                 else
 427                         maxlen = B_FIFO_SIZE + B_SUB_VAL - *z2r;        /* maximum */
 428
 429                 ptr1 = bdata + (*z2r - B_SUB_VAL);      /* start of data */
 430                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 431                 fcnt -= maxlen;
 432
 433                 if (fcnt) {     /* rest remaining */
 434                         ptr += maxlen;
 435                         ptr1 = bdata;   /* start of buffer */
 436                         memcpy(ptr, ptr1, fcnt);        /* rest */
 437                 }
 438                 skb_queue_tail(&bcs->rqueue, skb);
 439                 hfcpci_sched_event(bcs, B_RCVBUFREADY);
 440         }
 441
 442         *z2r = new_z2;          /* new position */
 443         return (1);
 444 }                               /* hfcpci_empty_fifo_trans */
 445
 446 /**********************************/
 447 /* B-channel main receive routine */
 448 /**********************************/
 449 void
 450 main_rec_hfcpci(struct BCState *bcs)
 451 {
 452         struct IsdnCardState *cs = bcs->cs;
 453         int rcnt, real_fifo;
 454         int receive, count = 5;
 455         struct sk_buff *skb;
 456         bzfifo_type *bz;
 457         u_char *bdata;
 458         z_type *zp;
 459
 460
 461         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 462                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 463                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 464                 real_fifo = 1;
 465         } else {
 466                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 467                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b1;
 468                 real_fifo = 0;
 469         }
 470       Begin:
 471         count--;
 472         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 473                 debugl1(cs, "rec_data %d blocked", bcs->channel);
 474                 return;
 475         }
 476         if (bz->f1 != bz->f2) {
 477                 if (cs->debug & L1_DEB_HSCX)
 478                         debugl1(cs, "hfcpci rec %d f1(%d) f2(%d)",
 479                                 bcs->channel, bz->f1, bz->f2);
 480                 zp = &bz->za[bz->f2];
 481
 482                 rcnt = zp->z1 - zp->z2;
 483                 if (rcnt < 0)
 484                         rcnt += B_FIFO_SIZE;
 485                 rcnt++;
 486                 if (cs->debug & L1_DEB_HSCX)
 487                         debugl1(cs, "hfcpci rec %d z1(%x) z2(%x) cnt(%d)",
 488                                 bcs->channel, zp->z1, zp->z2, rcnt);
 489                 if ((skb = hfcpci_empty_fifo(bcs, bz, bdata, rcnt))) {
 490                         skb_queue_tail(&bcs->rqueue, skb);
 491                         hfcpci_sched_event(bcs, B_RCVBUFREADY);
 492                 }
 493                 rcnt = bz->f1 - bz->f2;
 494                 if (rcnt < 0)
 495                         rcnt += MAX_B_FRAMES + 1;
 496                 if (cs->hw.hfcpci.last_bfifo_cnt[real_fifo] > rcnt + 1) {
 497                         rcnt = 0;
 498                         hfcpci_clear_fifo_rx(cs, real_fifo);
 499                 }
 500                 cs->hw.hfcpci.last_bfifo_cnt[real_fifo] = rcnt;
 501                 if (rcnt > 1)
 502                         receive = 1;
 503                 else
 504                         receive = 0;
 505         } else if (bcs->mode == L1_MODE_TRANS)
 506                 receive = hfcpci_empty_fifo_trans(bcs, bz, bdata);
 507         else
 508                 receive = 0;
 509         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 510         if (count && receive)
 511                 goto Begin;
 512         return;
 513 }
 514
 515 /**************************/
 516 /* D-channel send routine */
 517 /**************************/
 518 static void
 519 hfcpci_fill_dfifo(struct IsdnCardState *cs)
 520 {
 521         int fcnt;
 522         int count, new_z1, maxlen;
 523         dfifo_type *df;
 524         u_char *src, *dst, new_f1;
 525
 526         if (!cs->tx_skb)
 527                 return;
 528         if (cs->tx_skb->len <= 0)
 529                 return;
 530
 531         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_tx;
 532
 533         if (cs->debug & L1_DEB_ISAC)
 534                 debugl1(cs, "hfcpci_fill_Dfifo f1(%d) f2(%d) z1(f1)(%x)",
 535                         df->f1, df->f2,
 536                         df->za[df->f1 & D_FREG_MASK].z1);
 537         fcnt = df->f1 - df->f2; /* frame count actually buffered */
 538         if (fcnt < 0)
 539                 fcnt += (MAX_D_FRAMES + 1);     /* if wrap around */
 540         if (fcnt > (MAX_D_FRAMES - 1)) {
 541                 if (cs->debug & L1_DEB_ISAC)
 542                         debugl1(cs, "hfcpci_fill_Dfifo more as 14 frames");
 543 #ifdef ERROR_STATISTIC
 544                 cs->err_tx++;
 545 #endif
 546                 return;
 547         }
 548         /* now determine free bytes in FIFO buffer */
 549         count = df->za[df->f2 & D_FREG_MASK].z2 - df->za[df->f1 & D_FREG_MASK].z1 - 1;
 550         if (count <= 0)
 551                 count += D_FIFO_SIZE;   /* count now contains available bytes */
 552
 553         if (cs->debug & L1_DEB_ISAC)
 554                 debugl1(cs, "hfcpci_fill_Dfifo count(%ld/%d)",
 555                         cs->tx_skb->len, count);
 556         if (count < cs->tx_skb->len) {
 557                 if (cs->debug & L1_DEB_ISAC)
 558                         debugl1(cs, "hfcpci_fill_Dfifo no fifo mem");
 559                 return;
 560         }
 561         count = cs->tx_skb->len;        /* get frame len */
 562         new_z1 = (df->za[df->f1 & D_FREG_MASK].z1 + count) & (D_FIFO_SIZE - 1);
 563         new_f1 = ((df->f1 + 1) & D_FREG_MASK) | (D_FREG_MASK + 1);
 564         src = cs->tx_skb->data; /* source pointer */
 565         dst = df->data + df->za[df->f1 & D_FREG_MASK].z1;
 566         maxlen = D_FIFO_SIZE - df->za[df->f1 & D_FREG_MASK].z1;         /* end fifo */
 567         if (maxlen > count)
 568                 maxlen = count; /* limit size */
 569         memcpy(dst, src, maxlen);       /* first copy */
 570
 571         count -= maxlen;        /* remaining bytes */
 572         if (count) {
 573                 dst = df->data; /* start of buffer */
 574                 src += maxlen;  /* new position */
 575                 memcpy(dst, src, count);
 576         }
 577         df->za[new_f1 & D_FREG_MASK].z1 = new_z1;       /* for next buffer */
 578         df->za[df->f1 & D_FREG_MASK].z1 = new_z1;       /* new pos actual buffer */
 579         df->f1 = new_f1;        /* next frame */
 580
 581         dev_kfree_skb_any(cs->tx_skb);
 582         cs->tx_skb = NULL;
 583         return;
 584 }
 585
 586 /**************************/
 587 /* B-channel send routine */
 588 /**************************/
 589 static void
 590 hfcpci_fill_fifo(struct BCState *bcs)
 591 {
 592         struct IsdnCardState *cs = bcs->cs;
 593         int maxlen, fcnt;
 594         int count, new_z1;
 595         bzfifo_type *bz;
 596         u_char *bdata;
 597         u_char new_f1, *src, *dst;
 598         unsigned short *z1t, *z2t;
 599
 600         if (!bcs->tx_skb)
 601                 return;
 602         if (bcs->tx_skb->len <= 0)
 603                 return;
 604
 605         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 606                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 607                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b2;
 608         } else {
 609                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 610                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b1;
 611         }
 612
 613         if (bcs->mode == L1_MODE_TRANS) {
 614                 z1t = &bz->za[MAX_B_FRAMES].z1;
 615                 z2t = z1t + 1;
 616                 if (cs->debug & L1_DEB_HSCX)
 617                         debugl1(cs, "hfcpci_fill_fifo_trans %d z1(%x) z2(%x)",
 618                                 bcs->channel, *z1t, *z2t);
 619                 fcnt = *z2t - *z1t;
 620                 if (fcnt <= 0)
 621                         fcnt += B_FIFO_SIZE;    /* fcnt contains available bytes in fifo */
 622                 fcnt = B_FIFO_SIZE - fcnt;      /* remaining bytes to send */
 623
 624                 while ((fcnt < 2 * HFCPCI_BTRANS_THRESHOLD) && (bcs->tx_skb)) {
 625                         if (bcs->tx_skb->len < B_FIFO_SIZE - fcnt) {
 626                                 /* data is suitable for fifo */
 627                                 count = bcs->tx_skb->len;
 628
 629                                 new_z1 = *z1t + count;  /* new buffer Position */
 630                                 if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 631                                         new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 632                                 src = bcs->tx_skb->data;        /* source pointer */
 633                                 dst = bdata + (*z1t - B_SUB_VAL);
 634                                 maxlen = (B_FIFO_SIZE + B_SUB_VAL) - *z1t;      /* end of fifo */
 635                                 if (maxlen > count)
 636                                         maxlen = count;         /* limit size */
 637                                 memcpy(dst, src, maxlen);       /* first copy */
 638
 639                                 count -= maxlen;        /* remaining bytes */
 640                                 if (count) {
 641                                         dst = bdata;    /* start of buffer */
 642                                         src += maxlen;  /* new position */
 643                                         memcpy(dst, src, count);
 644                                 }
 645                                 bcs->tx_cnt -= bcs->tx_skb->len;
 646                                 fcnt += bcs->tx_skb->len;
 647                                 *z1t = new_z1;  /* now send data */
 648                         } else if (cs->debug & L1_DEB_HSCX)
 649                                 debugl1(cs, "hfcpci_fill_fifo_trans %d frame length %d discarded",
 650                                         bcs->channel, bcs->tx_skb->len);
 651
 652                         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 653                                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 654                                 u_long  flags;
 655                                 spin_lock_irqsave(&bcs->aclock, flags);
 656                                 bcs->ackcnt += bcs->tx_skb->len;
 657                                 spin_unlock_irqrestore(&bcs->aclock, flags);
 658                                 schedule_event(bcs, B_ACKPENDING);
 659                         }
 660
 661                         dev_kfree_skb_any(bcs->tx_skb);
 662                         bcs->tx_skb = skb_dequeue(&bcs->squeue);        /* fetch next data */
 663                 }
 664                 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 665                 return;
 666         }
 667         if (cs->debug & L1_DEB_HSCX)
 668                 debugl1(cs, "hfcpci_fill_fifo_hdlc %d f1(%d) f2(%d) z1(f1)(%x)",
 669                         bcs->channel, bz->f1, bz->f2,
 670                         bz->za[bz->f1].z1);
 671
 672         fcnt = bz->f1 - bz->f2; /* frame count actually buffered */
 673         if (fcnt < 0)
 674                 fcnt += (MAX_B_FRAMES + 1);     /* if wrap around */
 675         if (fcnt > (MAX_B_FRAMES - 1)) {
 676                 if (cs->debug & L1_DEB_HSCX)
 677                         debugl1(cs, "hfcpci_fill_Bfifo more as 14 frames");
 678                 return;
 679         }
 680         /* now determine free bytes in FIFO buffer */
 681         count = bz->za[bz->f2].z2 - bz->za[bz->f1].z1 - 1;
 682         if (count <= 0)
 683                 count += B_FIFO_SIZE;   /* count now contains available bytes */
 684
 685         if (cs->debug & L1_DEB_HSCX)
 686                 debugl1(cs, "hfcpci_fill_fifo %d count(%ld/%d),%lx",
 687                         bcs->channel, bcs->tx_skb->len,
 688                         count, current->state);
 689
 690         if (count < bcs->tx_skb->len) {
 691                 if (cs->debug & L1_DEB_HSCX)
 692                         debugl1(cs, "hfcpci_fill_fifo no fifo mem");
 693                 return;
 694         }
 695         count = bcs->tx_skb->len;       /* get frame len */
 696         new_z1 = bz->za[bz->f1].z1 + count;     /* new buffer Position */
 697         if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 698                 new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 699
 700         new_f1 = ((bz->f1 + 1) & MAX_B_FRAMES);
 701         src = bcs->tx_skb->data;        /* source pointer */
 702         dst = bdata + (bz->za[bz->f1].z1 - B_SUB_VAL);
 703         maxlen = (B_FIFO_SIZE + B_SUB_VAL) - bz->za[bz->f1].z1;         /* end fifo */
 704         if (maxlen > count)
 705                 maxlen = count; /* limit size */
 706         memcpy(dst, src, maxlen);       /* first copy */
 707
 708         count -= maxlen;        /* remaining bytes */
 709         if (count) {
 710                 dst = bdata;    /* start of buffer */
 711                 src += maxlen;  /* new position */
 712                 memcpy(dst, src, count);
 713         }
 714         bcs->tx_cnt -= bcs->tx_skb->len;
 715         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 716                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 717                 u_long  flags;
 718                 spin_lock_irqsave(&bcs->aclock, flags);
 719                 bcs->ackcnt += bcs->tx_skb->len;
 720                 spin_unlock_irqrestore(&bcs->aclock, flags);
 721                 schedule_event(bcs, B_ACKPENDING);
 722         }
 723
 724         bz->za[new_f1].z1 = new_z1;     /* for next buffer */
 725         bz->f1 = new_f1;        /* next frame */
 726
 727         dev_kfree_skb_any(bcs->tx_skb);
 728         bcs->tx_skb = NULL;
 729         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 730         return;
 731 }
 732
 733 /**********************************************/
 734 /* D-channel l1 state call for leased NT-mode */
 735 /**********************************************/
 736 static void
 737 dch_nt_l2l1(struct PStack *st, int pr, void *arg)
 738 {
 739         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
 740
 741         switch (pr) {
 742                 case (PH_DATA | REQUEST):
 743                 case (PH_PULL | REQUEST):
 744                 case (PH_PULL | INDICATION):
 745                         st->l1.l1hw(st, pr, arg);
 746                         break;
 747                 case (PH_ACTIVATE | REQUEST):
 748                         st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
 749                         break;
 750                 case (PH_TESTLOOP | REQUEST):
 751                         if (1 & (long) arg)
 752                                 debugl1(cs, "PH_TEST_LOOP B1");
 753                         if (2 & (long) arg)
 754                                 debugl1(cs, "PH_TEST_LOOP B2");
 755                         if (!(3 & (long) arg))
 756                                 debugl1(cs, "PH_TEST_LOOP DISABLED");
 757                         st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
 758                         break;
 759                 default:
 760                         if (cs->debug)
 761                                 debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr);
 762                         break;
 763         }
 764 }
 765
 766
 767
 768 /***********************/
 769 /* set/reset echo mode */
 770 /***********************/
 771 static int
 772 hfcpci_auxcmd(struct IsdnCardState *cs, isdn_ctrl * ic)
 773 {
 774         u_long  flags;
 775         int     i = *(unsigned int *) ic->parm.num;
 776
 777         if ((ic->arg == 98) &&
 778             (!(cs->hw.hfcpci.int_m1 & (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC + HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC)))) {
 779                 spin_lock_irqsave(&cs->lock, flags);
 780                 Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_NT); /* ST-Bit delay for NT-Mode */
 781                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 0);    /* HFC ST G0 */
 782                 udelay(10);
 783                 cs->hw.hfcpci.sctrl |= SCTRL_MODE_NT;
 784                 Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);       /* set NT-mode */
 785                 udelay(10);
 786                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 1);    /* HFC ST G1 */
 787                 udelay(10);
 788                 Write_hfc(cs, HFCPCI_STATES, 1 | HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
 789                 cs->dc.hfcpci.ph_state = 1;
 790                 cs->hw.hfcpci.nt_mode = 1;
 791                 cs->hw.hfcpci.nt_timer = 0;
 792                 cs->stlist->l2.l2l1 = dch_nt_l2l1;
 793                 spin_unlock_irqrestore(&cs->lock, flags);
 794                 debugl1(cs, "NT mode activated");
 795                 return (0);
 796         }
 797         if ((cs->chanlimit > 1) || (cs->hw.hfcpci.bswapped) ||
 798             (cs->hw.hfcpci.nt_mode) || (ic->arg != 12))
 799                 return (-EINVAL);
 800
 801         spin_lock_irqsave(&cs->lock, flags);
 802         if (i) {
 803                 cs->logecho = 1;
 804                 cs->hw.hfcpci.trm |= 0x20;      /* enable echo chan */
 805                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_B2REC;
 806                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2RX;
 807         } else {
 808                 cs->logecho = 0;
 809                 cs->hw.hfcpci.trm &= ~0x20;     /* disable echo chan */
 810                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_B2REC;
 811                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2RX;
 812         }
 813         cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
 814         cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
 815         cs->hw.hfcpci.conn |= 0x10;     /* B2-IOM -> B2-ST */
 816         cs->hw.hfcpci.ctmt &= ~2;
 817         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 818         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 819         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 820         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 821         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 822         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 823         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 824         spin_unlock_irqrestore(&cs->lock, flags);
 825         return (0);
 826 }                               /* hfcpci_auxcmd */
 827
 828 /*****************************/
 829 /* E-channel receive routine */
 830 /*****************************/
 831 static void
 832 receive_emsg(struct IsdnCardState *cs)
 833 {
 834         int rcnt;
 835         int receive, count = 5;
 836         bzfifo_type *bz;
 837         u_char *bdata;
 838         z_type *zp;
 839         u_char *ptr, *ptr1, new_f2;
 840         int total, maxlen, new_z2;
 841         u_char e_buffer[256];
 842
 843         bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 844         bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 845       Begin:
 846         count--;
 847         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 848                 debugl1(cs, "echo_rec_data blocked");
 849                 return;
 850         }
 851         if (bz->f1 != bz->f2) {
 852                 if (cs->debug & L1_DEB_ISAC)
 853                         debugl1(cs, "hfcpci e_rec f1(%d) f2(%d)",
 854                                 bz->f1, bz->f2);
 855                 zp = &bz->za[bz->f2];
 856
 857                 rcnt = zp->z1 - zp->z2;
 858                 if (rcnt < 0)
 859                         rcnt += B_FIFO_SIZE;
 860                 rcnt++;
 861                 if (cs->debug & L1_DEB_ISAC)
 862                         debugl1(cs, "hfcpci e_rec z1(%x) z2(%x) cnt(%d)",
 863                                 zp->z1, zp->z2, rcnt);
 864                 new_z2 = zp->z2 + rcnt;         /* new position in fifo */
 865                 if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 866                         new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 867                 new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 868                 if ((rcnt > 256 + 3) || (count < 4) ||
 869                     (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 870                         if (cs->debug & L1_DEB_WARN)
 871                                 debugl1(cs, "hfcpci_empty_echan: incoming packet invalid length %d or crc", rcnt);
 872                         bz->za[new_f2].z2 = new_z2;
 873                         bz->f2 = new_f2;        /* next buffer */
 874                 } else {
 875                         total = rcnt;
 876                         rcnt -= 3;
 877                         ptr = e_buffer;
 878
 879                         if (zp->z2 <= B_FIFO_SIZE + B_SUB_VAL)
 880                                 maxlen = rcnt;  /* complete transfer */
 881                         else
 882                                 maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 883
 884                         ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 885                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 886                         rcnt -= maxlen;
 887
 888                         if (rcnt) {     /* rest remaining */
 889                                 ptr += maxlen;
 890                                 ptr1 = bdata;   /* start of buffer */
 891                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 892                         }
 893                         bz->za[new_f2].z2 = new_z2;
 894                         bz->f2 = new_f2;        /* next buffer */
 895                         if (cs->debug & DEB_DLOG_HEX) {
 896                                 ptr = cs->dlog;
 897                                 if ((total - 3) < MAX_DLOG_SPACE / 3 - 10) {
 898                                         *ptr++ = 'E';
 899                                         *ptr++ = 'C';
 900                                         *ptr++ = 'H';
 901                                         *ptr++ = 'O';
 902                                         *ptr++ = ':';
 903                                         ptr += QuickHex(ptr, e_buffer, total - 3);
 904                                         ptr--;
 905                                         *ptr++ = '\n';
 906                                         *ptr = 0;
 907                                         HiSax_putstatus(cs, NULL, cs->dlog);
 908                                 } else
 909                                         HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", total - 3);
 910                         }
 911                 }
 912
 913                 rcnt = bz->f1 - bz->f2;
 914                 if (rcnt < 0)
 915                         rcnt += MAX_B_FRAMES + 1;
 916                 if (rcnt > 1)
 917                         receive = 1;
 918                 else
 919                         receive = 0;
 920         } else
 921                 receive = 0;
 922         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 923         if (count && receive)
 924                 goto Begin;
 925         return;
 926 }                               /* receive_emsg */
 927
 928 /*********************/
 929 /* Interrupt handler */
 930 /*********************/
 931 static irqreturn_t
 932 hfcpci_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 933 {
 934         u_long flags;
 935         struct IsdnCardState *cs = dev_id;
 936         u_char exval;
 937         struct BCState *bcs;
 938         int count = 15;
 939         u_char val, stat;
 940
 941         if (!(cs->hw.hfcpci.int_m2 & 0x08)) {
 942                 debugl1(cs, "HFC-PCI: int_m2 %x not initialised", cs->hw.hfcpci.int_m2);
 943                 return IRQ_NONE;        /* not initialised */
 944         }
 945         spin_lock_irqsave(&cs->lock, flags);
 946         if (HFCPCI_ANYINT & (stat = Read_hfc(cs, HFCPCI_STATUS))) {
 947                 val = Read_hfc(cs, HFCPCI_INT_S1);
 948                 if (cs->debug & L1_DEB_ISAC)
 949                         debugl1(cs, "HFC-PCI: stat(%02x) s1(%02x)", stat, val);
 950         } else {
 951                 spin_unlock_irqrestore(&cs->lock, flags);
 952                 return IRQ_NONE;
 953         }
 954         if (cs->debug & L1_DEB_ISAC)
 955                 debugl1(cs, "HFC-PCI irq %x %s", val,
 956                         test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
 957                         "locked" : "unlocked");
 958         val &= cs->hw.hfcpci.int_m1;
 959         if (val & 0x40) {       /* state machine irq */
 960                 exval = Read_hfc(cs, HFCPCI_STATES) & 0xf;
 961                 if (cs->debug & L1_DEB_ISAC)
 962                         debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcpci.ph_state,
 963                                 exval);
 964                 cs->dc.hfcpci.ph_state = exval;
 965                 sched_event_D_pci(cs, D_L1STATECHANGE);
 966                 val &= ~0x40;
 967         }
 968         if (val & 0x80) {       /* timer irq */
 969                 if (cs->hw.hfcpci.nt_mode) {
 970                         if ((--cs->hw.hfcpci.nt_timer) < 0)
 971                                 sched_event_D_pci(cs, D_L1STATECHANGE);
 972                 }
 973                 val &= ~0x80;
 974                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
 975         }
 976         while (val) {
 977                 if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 978                         cs->hw.hfcpci.int_s1 |= val;
 979                         spin_unlock_irqrestore(&cs->lock, flags);
 980                         return IRQ_HANDLED;
 981                 }
 982                 if (cs->hw.hfcpci.int_s1 & 0x18) {
 983                         exval = val;
 984                         val = cs->hw.hfcpci.int_s1;
 985                         cs->hw.hfcpci.int_s1 = exval;
 986                 }
 987                 if (val & 0x08) {
 988                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
 989                                 if (cs->debug)
 990                                         debugl1(cs, "hfcpci spurious 0x08 IRQ");
 991                         } else
 992                                 main_rec_hfcpci(bcs);
 993                 }
 994                 if (val & 0x10) {
 995                         if (cs->logecho)
 996                                 receive_emsg(cs);
 997                         else if (!(bcs = Sel_BCS(cs, 1))) {
 998                                 if (cs->debug)
 999                                         debugl1(cs, "hfcpci spurious 0x10 IRQ");
1000                         } else
1001                                 main_rec_hfcpci(bcs);
1002                 }
1003                 if (val & 0x01) {
1004                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
1005                                 if (cs->debug)
1006                                         debugl1(cs, "hfcpci spurious 0x01 IRQ");
1007                         } else {
1008                                 if (bcs->tx_skb) {
1009                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1010                                                 hfcpci_fill_fifo(bcs);
1011                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1012                                         } else
1013                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1014                                 } else {
1015                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1016                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1017                                                         hfcpci_fill_fifo(bcs);
1018                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1019                                                 } else
1020                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1021                                         } else {
1022                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1023                                         }
1024                                 }
1025                         }
1026                 }
1027                 if (val & 0x02) {
1028                         if (!(bcs = Sel_BCS(cs, 1))) {
1029                                 if (cs->debug)
1030                                         debugl1(cs, "hfcpci spurious 0x02 IRQ");
1031                         } else {
1032                                 if (bcs->tx_skb) {
1033                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1034                                                 hfcpci_fill_fifo(bcs);
1035                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1036                                         } else
1037                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1038                                 } else {
1039                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1040                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1041                                                         hfcpci_fill_fifo(bcs);
1042                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1043                                                 } else
1044                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1045                                         } else {
1046                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1047                                         }
1048                                 }
1049                         }
1050                 }
1051                 if (val & 0x20) {       /* receive dframe */
1052                         receive_dmsg(cs);
1053                 }
1054                 if (val & 0x04) {       /* dframe transmitted */
1055                         if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
1056                                 del_timer(&cs->dbusytimer);
1057                         if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
1058                                 sched_event_D_pci(cs, D_CLEARBUSY);
1059                         if (cs->tx_skb) {
1060                                 if (cs->tx_skb->len) {
1061                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1062                                                 hfcpci_fill_dfifo(cs);
1063                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1064                                         } else {
1065                                                 debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1066                                         }
1067                                         goto afterXPR;
1068                                 } else {
1069                                         dev_kfree_skb_irq(cs->tx_skb);
1070                                         cs->tx_cnt = 0;
1071                                         cs->tx_skb = NULL;
1072                                 }
1073                         }
1074                         if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
1075                                 cs->tx_cnt = 0;
1076                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1077                                         hfcpci_fill_dfifo(cs);
1078                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1079                                 } else {
1080                                         debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1081                                 }
1082                         } else
1083                                 sched_event_D_pci(cs, D_XMTBUFREADY);
1084                 }
1085               afterXPR:
1086                 if (cs->hw.hfcpci.int_s1 && count--) {
1087                         val = cs->hw.hfcpci.int_s1;
1088                         cs->hw.hfcpci.int_s1 = 0;
1089                         if (cs->debug & L1_DEB_ISAC)
1090                                 debugl1(cs, "HFC-PCI irq %x loop %d", val, 15 - count);
1091                 } else
1092                         val = 0;
1093         }
1094         spin_unlock_irqrestore(&cs->lock, flags);
1095         return IRQ_HANDLED;
1096 }
1097
1098 /********************************************************************/
1099 /* timer callback for D-chan busy resolution. Currently no function */
1100 /********************************************************************/
1101 static void
1102 hfcpci_dbusy_timer(struct IsdnCardState *cs)
1103 {
1104 }
1105
1106 /*************************************/
1107 /* Layer 1 D-channel hardware access */
1108 /*************************************/
1109 static void
1110 HFCPCI_l1hw(struct PStack *st, int pr, void *arg)
1111 {
1112         u_long flags;
1113         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
1114         struct sk_buff *skb = arg;
1115
1116         switch (pr) {
1117                 case (PH_DATA | REQUEST):
1118                         if (cs->debug & DEB_DLOG_HEX)
1119                                 LogFrame(cs, skb->data, skb->len);
1120                         if (cs->debug & DEB_DLOG_VERBOSE)
1121                                 dlogframe(cs, skb, 0);
1122                         spin_lock_irqsave(&cs->lock, flags);
1123                         if (cs->tx_skb) {
1124                                 skb_queue_tail(&cs->sq, skb);
1125 #ifdef L2FRAME_DEBUG            /* psa */
1126                                 if (cs->debug & L1_DEB_LAPD)
1127                                         Logl2Frame(cs, skb, "PH_DATA Queued", 0);
1128 #endif
1129                         } else {
1130                                 cs->tx_skb = skb;
1131                                 cs->tx_cnt = 0;
1132 #ifdef L2FRAME_DEBUG            /* psa */
1133                                 if (cs->debug & L1_DEB_LAPD)
1134                                         Logl2Frame(cs, skb, "PH_DATA", 0);
1135 #endif
1136                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1137                                         hfcpci_fill_dfifo(cs);
1138                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1139                                 } else
1140                                         debugl1(cs, "hfcpci_fill_dfifo blocked");
1141
1142                         }
1143                         spin_unlock_irqrestore(&cs->lock, flags);
1144                         break;
1145                 case (PH_PULL | INDICATION):
1146                         spin_lock_irqsave(&cs->lock, flags);
1147                         if (cs->tx_skb) {
1148                                 if (cs->debug & L1_DEB_WARN)
1149                                         debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
1150                                 skb_queue_tail(&cs->sq, skb);
1151                                 spin_unlock_irqrestore(&cs->lock, flags);
1152                                 break;
1153                         }
1154                         if (cs->debug & DEB_DLOG_HEX)
1155                                 LogFrame(cs, skb->data, skb->len);
1156                         if (cs->debug & DEB_DLOG_VERBOSE)
1157                                 dlogframe(cs, skb, 0);
1158                         cs->tx_skb = skb;
1159                         cs->tx_cnt = 0;
1160 #ifdef L2FRAME_DEBUG            /* psa */
1161                         if (cs->debug & L1_DEB_LAPD)
1162                                 Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
1163 #endif
1164                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1165                                 hfcpci_fill_dfifo(cs);
1166                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1167                         } else
1168                                 debugl1(cs, "hfcpci_fill_dfifo blocked");
1169                         spin_unlock_irqrestore(&cs->lock, flags);
1170                         break;
1171                 case (PH_PULL | REQUEST):
1172 #ifdef L2FRAME_DEBUG            /* psa */
1173                         if (cs->debug & L1_DEB_LAPD)
1174                                 debugl1(cs, "-> PH_REQUEST_PULL");
1175 #endif
1176                         if (!cs->tx_skb) {
1177                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1178                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1179                         } else
1180                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1181                         break;
1182                 case (HW_RESET | REQUEST):
1183                         spin_lock_irqsave(&cs->lock, flags);
1184                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 3);    /* HFC ST 3 */
1185                         udelay(6);
1186                         Write_hfc(cs, HFCPCI_STATES, 3);        /* HFC ST 2 */
1187                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1188                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1189                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
1190                         spin_unlock_irqrestore(&cs->lock, flags);
1191                         l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
1192                         break;
1193                 case (HW_ENABLE | REQUEST):
1194                         spin_lock_irqsave(&cs->lock, flags);
1195                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_DO_ACTION);
1196                         spin_unlock_irqrestore(&cs->lock, flags);
1197                         break;
1198                 case (HW_DEACTIVATE | 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_INFO3 | REQUEST):
1205                         spin_lock_irqsave(&cs->lock, flags);
1206                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1207                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1208                         spin_unlock_irqrestore(&cs->lock, flags);
1209                         break;
1210                 case (HW_TESTLOOP | REQUEST):
1211                         spin_lock_irqsave(&cs->lock, flags);
1212                         switch ((int) arg) {
1213                                 case (1):
1214                                         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* tx slot */
1215                                         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* rx slot */
1216                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~7) | 1;
1217                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1218                                         break;
1219
1220                                 case (2):
1221                                         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* tx slot */
1222                                         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* rx slot */
1223                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~0x38) | 0x08;
1224                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1225                                         break;
1226
1227                                 default:
1228                                         spin_unlock_irqrestore(&cs->lock, flags);
1229                                         if (cs->debug & L1_DEB_WARN)
1230                                                 debugl1(cs, "hfcpci_l1hw loop invalid %4x", (int) arg);
1231                                         return;
1232                         }
1233                         cs->hw.hfcpci.trm |= 0x80;      /* enable IOM-loop */
1234                         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
1235                         spin_unlock_irqrestore(&cs->lock, flags);
1236                         break;
1237                 default:
1238                         if (cs->debug & L1_DEB_WARN)
1239                                 debugl1(cs, "hfcpci_l1hw unknown pr %4x", pr);
1240                         break;
1241         }
1242 }
1243
1244 /***********************************************/
1245 /* called during init setting l1 stack pointer */
1246 /***********************************************/
1247 void
1248 setstack_hfcpci(struct PStack *st, struct IsdnCardState *cs)
1249 {
1250         st->l1.l1hw = HFCPCI_l1hw;
1251 }
1252
1253 /**************************************/
1254 /* send B-channel data if not blocked */
1255 /**************************************/
1256 static void
1257 hfcpci_send_data(struct BCState *bcs)
1258 {
1259         struct IsdnCardState *cs = bcs->cs;
1260
1261         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1262                 hfcpci_fill_fifo(bcs);
1263                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1264         } else
1265                 debugl1(cs, "send_data %d blocked", bcs->channel);
1266 }
1267
1268 /***************************************************************/
1269 /* activate/deactivate hardware for selected channels and mode */
1270 /***************************************************************/
1271 void
1272 mode_hfcpci(struct BCState *bcs, int mode, int bc)
1273 {
1274         struct IsdnCardState *cs = bcs->cs;
1275         int fifo2;
1276
1277         if (cs->debug & L1_DEB_HSCX)
1278                 debugl1(cs, "HFCPCI bchannel mode %d bchan %d/%d",
1279                         mode, bc, bcs->channel);
1280         bcs->mode = mode;
1281         bcs->channel = bc;
1282         fifo2 = bc;
1283         if (cs->chanlimit > 1) {
1284                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1285                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1286         } else {
1287                 if (bc) {
1288                         if (mode != L1_MODE_NULL) {
1289                                 cs->hw.hfcpci.bswapped = 1;     /* B1 and B2 exchanged */
1290                                 cs->hw.hfcpci.sctrl_e |= 0x80;
1291                         } else {
1292                                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1293                                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1294                         }
1295                         fifo2 = 0;
1296                 } else {
1297                         cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1298                         cs->hw.hfcpci.sctrl_e &= ~0x80;
1299                 }
1300         }
1301         switch (mode) {
1302                 case (L1_MODE_NULL):
1303                         if (bc) {
1304                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
1305                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
1306                         } else {
1307                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B1_ENA;
1308                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B1_ENA;
1309                         }
1310                         if (fifo2) {
1311                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1312                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1313                         } else {
1314                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1315                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1316                         }
1317                         break;
1318                 case (L1_MODE_TRANS):
1319                         hfcpci_clear_fifo_rx(cs, fifo2);
1320                         hfcpci_clear_fifo_tx(cs, fifo2);
1321                         if (bc) {
1322                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1323                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1324                         } else {
1325                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1326                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1327                         }
1328                         if (fifo2) {
1329                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1330                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1331                                 cs->hw.hfcpci.ctmt |= 2;
1332                                 cs->hw.hfcpci.conn &= ~0x18;
1333                         } else {
1334                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1335                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1336                                 cs->hw.hfcpci.ctmt |= 1;
1337                                 cs->hw.hfcpci.conn &= ~0x03;
1338                         }
1339                         break;
1340                 case (L1_MODE_HDLC):
1341                         hfcpci_clear_fifo_rx(cs, fifo2);
1342                         hfcpci_clear_fifo_tx(cs, fifo2);
1343                         if (bc) {
1344                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1345                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1346                         } else {
1347                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1348                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1349                         }
1350                         if (fifo2) {
1351                                 cs->hw.hfcpci.last_bfifo_cnt[1] = 0;
1352                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1353                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1354                                 cs->hw.hfcpci.ctmt &= ~2;
1355                                 cs->hw.hfcpci.conn &= ~0x18;
1356                         } else {
1357                                 cs->hw.hfcpci.last_bfifo_cnt[0] = 0;
1358                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1359                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1360                                 cs->hw.hfcpci.ctmt &= ~1;
1361                                 cs->hw.hfcpci.conn &= ~0x03;
1362                         }
1363                         break;
1364                 case (L1_MODE_EXTRN):
1365                         if (bc) {
1366                                 cs->hw.hfcpci.conn |= 0x10;
1367                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1368                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1369                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1370                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1371                         } else {
1372                                 cs->hw.hfcpci.conn |= 0x02;
1373                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1374                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1375                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1376                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1377                         }
1378                         break;
1379         }
1380         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);
1381         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1382         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
1383         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
1384         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
1385         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
1386         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1387 }
1388
1389 /******************************/
1390 /* Layer2 -> Layer 1 Transfer */
1391 /******************************/
1392 static void
1393 hfcpci_l2l1(struct PStack *st, int pr, void *arg)
1394 {
1395         struct BCState  *bcs = st->l1.bcs;
1396         u_long          flags;
1397         struct sk_buff  *skb = arg;
1398
1399         switch (pr) {
1400                 case (PH_DATA | REQUEST):
1401                         spin_lock_irqsave(&bcs->cs->lock, flags);
1402                         if (bcs->tx_skb) {
1403                                 skb_queue_tail(&bcs->squeue, skb);
1404                         } else {
1405                                 bcs->tx_skb = skb;
1406 //                              test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1407                                 bcs->cs->BC_Send_Data(bcs);
1408                         }
1409                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1410                         break;
1411                 case (PH_PULL | INDICATION):
1412                         spin_lock_irqsave(&bcs->cs->lock, flags);
1413                         if (bcs->tx_skb) {
1414                                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1415                                 printk(KERN_WARNING "hfc_l2l1: this shouldn't happen\n");
1416                                 break;
1417                         }
1418 //                      test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1419                         bcs->tx_skb = skb;
1420                         bcs->cs->BC_Send_Data(bcs);
1421                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1422                         break;
1423                 case (PH_PULL | REQUEST):
1424                         if (!bcs->tx_skb) {
1425                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1426                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1427                         } else
1428                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1429                         break;
1430                 case (PH_ACTIVATE | REQUEST):
1431                         spin_lock_irqsave(&bcs->cs->lock, flags);
1432                         test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
1433                         mode_hfcpci(bcs, st->l1.mode, st->l1.bc);
1434                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1435                         l1_msg_b(st, pr, arg);
1436                         break;
1437                 case (PH_DEACTIVATE | REQUEST):
1438                         l1_msg_b(st, pr, arg);
1439                         break;
1440                 case (PH_DEACTIVATE | CONFIRM):
1441                         spin_lock_irqsave(&bcs->cs->lock, flags);
1442                         test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
1443                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1444                         mode_hfcpci(bcs, 0, st->l1.bc);
1445                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1446                         st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
1447                         break;
1448         }
1449 }
1450
1451 /******************************************/
1452 /* deactivate B-channel access and queues */
1453 /******************************************/
1454 static void
1455 close_hfcpci(struct BCState *bcs)
1456 {
1457         mode_hfcpci(bcs, 0, bcs->channel);
1458         if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
1459                 skb_queue_purge(&bcs->rqueue);
1460                 skb_queue_purge(&bcs->squeue);
1461                 if (bcs->tx_skb) {
1462                         dev_kfree_skb_any(bcs->tx_skb);
1463                         bcs->tx_skb = NULL;
1464                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1465                 }
1466         }
1467 }
1468
1469 /*************************************/
1470 /* init B-channel queues and control */
1471 /*************************************/
1472 static int
1473 open_hfcpcistate(struct IsdnCardState *cs, struct BCState *bcs)
1474 {
1475         if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
1476                 skb_queue_head_init(&bcs->rqueue);
1477                 skb_queue_head_init(&bcs->squeue);
1478         }
1479         bcs->tx_skb = NULL;
1480         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1481         bcs->event = 0;
1482         bcs->tx_cnt = 0;
1483         return (0);
1484 }
1485
1486 /*********************************/
1487 /* inits the stack for B-channel */
1488 /*********************************/
1489 static int
1490 setstack_2b(struct PStack *st, struct BCState *bcs)
1491 {
1492         bcs->channel = st->l1.bc;
1493         if (open_hfcpcistate(st->l1.hardware, bcs))
1494                 return (-1);
1495         st->l1.bcs = bcs;
1496         st->l2.l2l1 = hfcpci_l2l1;
1497         setstack_manager(st);
1498         bcs->st = st;
1499         setstack_l1_B(st);
1500         return (0);
1501 }
1502
1503 /***************************/
1504 /* handle L1 state changes */
1505 /***************************/
1506 static void
1507 hfcpci_bh(struct IsdnCardState *cs)
1508 {
1509         u_long  flags;
1510 //      struct PStack *stptr;
1511
1512         if (!cs)
1513                 return;
1514         if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
1515                 if (!cs->hw.hfcpci.nt_mode)
1516                         switch (cs->dc.hfcpci.ph_state) {
1517                                 case (0):
1518                                         l1_msg(cs, HW_RESET | INDICATION, NULL);
1519                                         break;
1520                                 case (3):
1521                                         l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
1522                                         break;
1523                                 case (8):
1524                                         l1_msg(cs, HW_RSYNC | INDICATION, NULL);
1525                                         break;
1526                                 case (6):
1527                                         l1_msg(cs, HW_INFO2 | INDICATION, NULL);
1528                                         break;
1529                                 case (7):
1530                                         l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
1531                                         break;
1532                                 default:
1533                                         break;
1534                 } else {
1535                         spin_lock_irqsave(&cs->lock, flags);
1536                         switch (cs->dc.hfcpci.ph_state) {
1537                                 case (2):
1538                                         if (cs->hw.hfcpci.nt_timer < 0) {
1539                                                 cs->hw.hfcpci.nt_timer = 0;
1540                                                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1541                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1542                                                 /* Clear already pending ints */
1543                                                 if (Read_hfc(cs, HFCPCI_INT_S1));
1544                                                 Write_hfc(cs, HFCPCI_STATES, 4 | HFCPCI_LOAD_STATE);
1545                                                 udelay(10);
1546                                                 Write_hfc(cs, HFCPCI_STATES, 4);
1547                                                 cs->dc.hfcpci.ph_state = 4;
1548                                         } else {
1549                                                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_TIMER;
1550                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1551                                                 cs->hw.hfcpci.ctmt &= ~HFCPCI_AUTO_TIMER;
1552                                                 cs->hw.hfcpci.ctmt |= HFCPCI_TIM3_125;
1553                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1554                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1555                                                 cs->hw.hfcpci.nt_timer = NT_T1_COUNT;
1556                                                 Write_hfc(cs, HFCPCI_STATES, 2 | HFCPCI_NT_G2_G3);      /* allow G2 -> G3 transition */
1557                                         }
1558                                         break;
1559                                 case (1):
1560                                 case (3):
1561                                 case (4):
1562                                         cs->hw.hfcpci.nt_timer = 0;
1563                                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1564                                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1565                                         break;
1566                                 default:
1567                                         break;
1568                         }
1569                         spin_unlock_irqrestore(&cs->lock, flags);
1570                 }
1571         }
1572         if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
1573                 DChannel_proc_rcv(cs);
1574         if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
1575                 DChannel_proc_xmt(cs);
1576 }
1577
1578
1579 /********************************/
1580 /* called for card init message */
1581 /********************************/
1582 void __init
1583 inithfcpci(struct IsdnCardState *cs)
1584 {
1585         cs->bcs[0].BC_SetStack = setstack_2b;
1586         cs->bcs[1].BC_SetStack = setstack_2b;
1587         cs->bcs[0].BC_Close = close_hfcpci;
1588         cs->bcs[1].BC_Close = close_hfcpci;
1589         cs->dbusytimer.function = (void *) hfcpci_dbusy_timer;
1590         cs->dbusytimer.data = (long) cs;
1591         init_timer(&cs->dbusytimer);
1592         mode_hfcpci(cs->bcs, 0, 0);
1593         mode_hfcpci(cs->bcs + 1, 0, 1);
1594 }
1595
1596
1597
1598 /*******************************************/
1599 /* handle card messages from control layer */
1600 /*******************************************/
1601 static int
1602 hfcpci_card_msg(struct IsdnCardState *cs, int mt, void *arg)
1603 {
1604         u_long flags;
1605
1606         if (cs->debug & L1_DEB_ISAC)
1607                 debugl1(cs, "HFCPCI: card_msg %x", mt);
1608         switch (mt) {
1609                 case CARD_RESET:
1610                         spin_lock_irqsave(&cs->lock, flags);
1611                         reset_hfcpci(cs);
1612                         spin_unlock_irqrestore(&cs->lock, flags);
1613                         return (0);
1614                 case CARD_RELEASE:
1615                         release_io_hfcpci(cs);
1616                         return (0);
1617                 case CARD_INIT:
1618                         spin_lock_irqsave(&cs->lock, flags);
1619                         inithfcpci(cs);
1620                         reset_hfcpci(cs);
1621                         spin_unlock_irqrestore(&cs->lock, flags);
1622                         msleep(80);                             /* Timeout 80ms */
1623                         /* now switch timer interrupt off */
1624                         spin_lock_irqsave(&cs->lock, flags);
1625                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1626                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1627                         /* reinit mode reg */
1628                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1629                         spin_unlock_irqrestore(&cs->lock, flags);
1630                         return (0);
1631                 case CARD_TEST:
1632                         return (0);
1633         }
1634         return (0);
1635 }
1636
1637
1638 /* this variable is used as card index when more than one cards are present */
1639 static struct pci_dev *dev_hfcpci __initdata = NULL;
1640
1641 #endif                          /* CONFIG_PCI */
1642
1643 int __init
1644 setup_hfcpci(struct IsdnCard *card)
1645 {
1646         u_long flags;
1647         struct IsdnCardState *cs = card->cs;
1648         char tmp[64];
1649         int i;
1650         struct pci_dev *tmp_hfcpci = NULL;
1651
1652 #ifdef __BIG_ENDIAN
1653 #error "not running on big endian machines now"
1654 #endif
1655         strcpy(tmp, hfcpci_revision);
1656         printk(KERN_INFO "HiSax: HFC-PCI driver Rev. %s\n", HiSax_getrev(tmp));
1657 #ifdef CONFIG_PCI
1658         cs->hw.hfcpci.int_s1 = 0;
1659         cs->dc.hfcpci.ph_state = 0;
1660         cs->hw.hfcpci.fifo = 255;
1661         if (cs->typ == ISDN_CTYPE_HFC_PCI) {
1662                 i = 0;
1663                 while (id_list[i].vendor_id) {
1664                         tmp_hfcpci = pci_find_device(id_list[i].vendor_id,
1665                                                      id_list[i].device_id,
1666                                                      dev_hfcpci);
1667                         i++;
1668                         if (tmp_hfcpci) {
1669                                 if (pci_enable_device(tmp_hfcpci))
1670                                         continue;
1671                                 pci_set_master(tmp_hfcpci);
1672                                 if ((card->para[0]) && (card->para[0] != (tmp_hfcpci->resource[ 0].start & PCI_BASE_ADDRESS_IO_MASK)))
1673                                         continue;
1674                                 else
1675                                         break;
1676                         }
1677                 }
1678
1679                 if (tmp_hfcpci) {
1680                         i--;
1681                         dev_hfcpci = tmp_hfcpci;        /* old device */
1682                         cs->hw.hfcpci.dev = dev_hfcpci;
1683                         cs->irq = dev_hfcpci->irq;
1684                         if (!cs->irq) {
1685                                 printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
1686                                 return (0);
1687                         }
1688                         cs->hw.hfcpci.pci_io = (char *) dev_hfcpci->resource[ 1].start;
1689                         printk(KERN_INFO "HiSax: HFC-PCI card manufacturer: %s card name: %s\n", id_list[i].vendor_name, id_list[i].card_name);
1690                 } else {
1691                         printk(KERN_WARNING "HFC-PCI: No PCI card found\n");
1692                         return (0);
1693                 }
1694                 if (!cs->hw.hfcpci.pci_io) {
1695                         printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n");
1696                         return (0);
1697                 }
1698                 /* Allocate memory for FIFOS */
1699                 /* Because the HFC-PCI needs a 32K physical alignment, we */
1700                 /* need to allocate the double mem and align the address */
1701                 if (!(cs->hw.hfcpci.share_start = kmalloc(65536, GFP_KERNEL))) {
1702                         printk(KERN_WARNING "HFC-PCI: Error allocating memory for FIFO!\n");
1703                         return 0;
1704                 }
1705                 cs->hw.hfcpci.fifos = (void *)
1706                     (((ulong) cs->hw.hfcpci.share_start) & ~0x7FFF) + 0x8000;
1707                 pci_write_config_dword(cs->hw.hfcpci.dev, 0x80, (u_int) virt_to_bus(cs->hw.hfcpci.fifos));
1708                 cs->hw.hfcpci.pci_io = ioremap((ulong) cs->hw.hfcpci.pci_io, 256);
1709                 printk(KERN_INFO
1710                        "HFC-PCI: defined at mem %#x fifo %#x(%#x) IRQ %d HZ %d\n",
1711                        (u_int) cs->hw.hfcpci.pci_io,
1712                        (u_int) cs->hw.hfcpci.fifos,
1713                        (u_int) virt_to_bus(cs->hw.hfcpci.fifos),
1714                        cs->irq, HZ);
1715                 spin_lock_irqsave(&cs->lock, flags);
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                 INIT_WORK(&cs->tqueue, (void *)(void *) hfcpci_bh, cs);
1724                 cs->setstack_d = setstack_hfcpci;
1725                 cs->BC_Send_Data = &hfcpci_send_data;
1726                 cs->readisac = NULL;
1727                 cs->writeisac = NULL;
1728                 cs->readisacfifo = NULL;
1729                 cs->writeisacfifo = NULL;
1730                 cs->BC_Read_Reg = NULL;
1731                 cs->BC_Write_Reg = NULL;
1732                 cs->irq_func = &hfcpci_interrupt;
1733                 cs->irq_flags |= SA_SHIRQ;
1734                 cs->hw.hfcpci.timer.function = (void *) hfcpci_Timer;
1735                 cs->hw.hfcpci.timer.data = (long) cs;
1736                 init_timer(&cs->hw.hfcpci.timer);
1737                 cs->cardmsg = &hfcpci_card_msg;
1738                 cs->auxcmd = &hfcpci_auxcmd;
1739                 spin_unlock_irqrestore(&cs->lock, flags);
1740                 return (1);
1741         } else
1742                 return (0);     /* no valid card type */
1743 #else
1744         printk(KERN_WARNING "HFC-PCI: NO_PCI_BIOS\n");
1745         return (0);
1746 #endif                          /* CONFIG_PCI */
1747 }