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         {PCI_VENDOR_ID_SITECOM, PCI_DEVICE_ID_SITECOM_DC105V2, "Sitecom Europe", "DC-105 ISDN PCI"},
  65         {0, 0, NULL, NULL},
  66 };
  67
  68
  69 #ifdef CONFIG_PCI
  70
  71 /******************************************/
  72 /* free hardware resources used by driver */
  73 /******************************************/
  74 static void
  75 release_io_hfcpci(struct IsdnCardState *cs)
  76 {
  77         printk(KERN_INFO "HiSax: release hfcpci at %p\n",
  78                 cs->hw.hfcpci.pci_io);
  79         cs->hw.hfcpci.int_m2 = 0;                                       /* interrupt output off ! */
  80         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  81         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);                       /* Reset On */
  82         mdelay(10);
  83         Write_hfc(cs, HFCPCI_CIRM, 0);                                  /* Reset Off */
  84         mdelay(10);
  85         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  86         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, 0);       /* disable memory mapped ports + busmaster */
  87         del_timer(&cs->hw.hfcpci.timer);
  88         kfree(cs->hw.hfcpci.share_start);
  89         cs->hw.hfcpci.share_start = NULL;
  90         iounmap((void *)cs->hw.hfcpci.pci_io);
  91 }
  92
  93 /********************************************************************************/
  94 /* function called to reset the HFC PCI chip. A complete software reset of chip */
  95 /* and fifos is done.                                                           */
  96 /********************************************************************************/
  97 static void
  98 reset_hfcpci(struct IsdnCardState *cs)
  99 {
 100         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
 101         cs->hw.hfcpci.int_m2 = 0;       /* interrupt output off ! */
 102         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 103
 104         printk(KERN_INFO "HFC_PCI: resetting card\n");
 105         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO + PCI_ENA_MASTER);  /* enable memory ports + busmaster */
 106         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);       /* Reset On */
 107         mdelay(10);
 108         Write_hfc(cs, HFCPCI_CIRM, 0);  /* Reset Off */
 109         mdelay(10);
 110         if (Read_hfc(cs, HFCPCI_STATUS) & 2)
 111                 printk(KERN_WARNING "HFC-PCI init bit busy\n");
 112
 113         cs->hw.hfcpci.fifo_en = 0x30;   /* only D fifos enabled */
 114         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 115
 116         cs->hw.hfcpci.trm = 0 + HFCPCI_BTRANS_THRESMASK;        /* no echo connect , threshold */
 117         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 118
 119         Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_TE); /* ST-Bit delay for TE-Mode */
 120         cs->hw.hfcpci.sctrl_e = HFCPCI_AUTO_AWAKE;
 121         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);   /* S/T Auto awake */
 122         cs->hw.hfcpci.bswapped = 0;     /* no exchange */
 123         cs->hw.hfcpci.nt_mode = 0;      /* we are in TE mode */
 124         cs->hw.hfcpci.ctmt = HFCPCI_TIM3_125 | HFCPCI_AUTO_TIMER;
 125         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 126
 127         cs->hw.hfcpci.int_m1 = HFCPCI_INTS_DTRANS | HFCPCI_INTS_DREC |
 128             HFCPCI_INTS_L1STATE | HFCPCI_INTS_TIMER;
 129         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 130
 131         /* Clear already pending ints */
 132         if (Read_hfc(cs, HFCPCI_INT_S1));
 133
 134         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 2);    /* HFC ST 2 */
 135         udelay(10);
 136         Write_hfc(cs, HFCPCI_STATES, 2);        /* HFC ST 2 */
 137         cs->hw.hfcpci.mst_m = HFCPCI_MASTER;    /* HFC Master Mode */
 138
 139         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
 140         cs->hw.hfcpci.sctrl = 0x40;     /* set tx_lo mode, error in datasheet ! */
 141         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 142         cs->hw.hfcpci.sctrl_r = 0;
 143         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 144
 145         /* Init GCI/IOM2 in master mode */
 146         /* Slots 0 and 1 are set for B-chan 1 and 2 */
 147         /* D- and monitor/CI channel are not enabled */
 148         /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */
 149         /* STIO2 is used as data input, B1+B2 from IOM->ST */
 150         /* ST B-channel send disabled -> continous 1s */
 151         /* The IOM slots are always enabled */
 152         cs->hw.hfcpci.conn = 0x36;      /* set data flow directions */
 153         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 154         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* B1-Slot 0 STIO1 out enabled */
 155         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* B2-Slot 1 STIO1 out enabled */
 156         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* B1-Slot 0 STIO2 in enabled */
 157         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* B2-Slot 1 STIO2 in enabled */
 158
 159         /* Finally enable IRQ output */
 160         cs->hw.hfcpci.int_m2 = HFCPCI_IRQ_ENABLE;
 161         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 162         if (Read_hfc(cs, HFCPCI_INT_S1));
 163 }
 164
 165 /***************************************************/
 166 /* Timer function called when kernel timer expires */
 167 /***************************************************/
 168 static void
 169 hfcpci_Timer(struct IsdnCardState *cs)
 170 {
 171         cs->hw.hfcpci.timer.expires = jiffies + 75;
 172         /* WD RESET */
 173 /*      WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcpci.ctmt | 0x80);
 174    add_timer(&cs->hw.hfcpci.timer);
 175  */
 176 }
 177
 178
 179 /*********************************/
 180 /* schedule a new D-channel task */
 181 /*********************************/
 182 static void
 183 sched_event_D_pci(struct IsdnCardState *cs, int event)
 184 {
 185         test_and_set_bit(event, &cs->event);
 186         schedule_work(&cs->tqueue);
 187 }
 188
 189 /*********************************/
 190 /* schedule a new b_channel task */
 191 /*********************************/
 192 static void
 193 hfcpci_sched_event(struct BCState *bcs, int event)
 194 {
 195         test_and_set_bit(event, &bcs->event);
 196         schedule_work(&bcs->tqueue);
 197 }
 198
 199 /************************************************/
 200 /* select a b-channel entry matching and active */
 201 /************************************************/
 202 static
 203 struct BCState *
 204 Sel_BCS(struct IsdnCardState *cs, int channel)
 205 {
 206         if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
 207                 return (&cs->bcs[0]);
 208         else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
 209                 return (&cs->bcs[1]);
 210         else
 211                 return (NULL);
 212 }
 213
 214 /***************************************/
 215 /* clear the desired B-channel rx fifo */
 216 /***************************************/
 217 static void hfcpci_clear_fifo_rx(struct IsdnCardState *cs, int fifo)
 218 {       u_char fifo_state;
 219         bzfifo_type *bzr;
 220
 221         if (fifo) {
 222                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 223                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2RX;
 224         } else {
 225                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 226                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1RX;
 227         }
 228         if (fifo_state)
 229                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 230         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 231         cs->hw.hfcpci.last_bfifo_cnt[fifo] = 0;
 232         bzr->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 233         bzr->za[MAX_B_FRAMES].z2 = bzr->za[MAX_B_FRAMES].z1;
 234         bzr->f1 = MAX_B_FRAMES;
 235         bzr->f2 = bzr->f1;      /* init F pointers to remain constant */
 236         if (fifo_state)
 237                 cs->hw.hfcpci.fifo_en |= fifo_state;
 238         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 239 }
 240
 241 /***************************************/
 242 /* clear the desired B-channel tx fifo */
 243 /***************************************/
 244 static void hfcpci_clear_fifo_tx(struct IsdnCardState *cs, int fifo)
 245 {       u_char fifo_state;
 246         bzfifo_type *bzt;
 247
 248         if (fifo) {
 249                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 250                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2TX;
 251         } else {
 252                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 253                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1TX;
 254         }
 255         if (fifo_state)
 256                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 257         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 258         bzt->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 259         bzt->za[MAX_B_FRAMES].z2 = bzt->za[MAX_B_FRAMES].z1;
 260         bzt->f1 = MAX_B_FRAMES;
 261         bzt->f2 = bzt->f1;      /* init F pointers to remain constant */
 262         if (fifo_state)
 263                 cs->hw.hfcpci.fifo_en |= fifo_state;
 264         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 265 }
 266
 267 /*********************************************/
 268 /* read a complete B-frame out of the buffer */
 269 /*********************************************/
 270 static struct sk_buff
 271 *
 272 hfcpci_empty_fifo(struct BCState *bcs, bzfifo_type * bz, u_char * bdata, int count)
 273 {
 274         u_char *ptr, *ptr1, new_f2;
 275         struct sk_buff *skb;
 276         struct IsdnCardState *cs = bcs->cs;
 277         int total, maxlen, new_z2;
 278         z_type *zp;
 279
 280         if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
 281                 debugl1(cs, "hfcpci_empty_fifo");
 282         zp = &bz->za[bz->f2];   /* point to Z-Regs */
 283         new_z2 = zp->z2 + count;        /* new position in fifo */
 284         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 285                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 286         new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 287         if ((count > HSCX_BUFMAX + 3) || (count < 4) ||
 288             (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 289                 if (cs->debug & L1_DEB_WARN)
 290                         debugl1(cs, "hfcpci_empty_fifo: incoming packet invalid length %d or crc", count);
 291 #ifdef ERROR_STATISTIC
 292                 bcs->err_inv++;
 293 #endif
 294                 bz->za[new_f2].z2 = new_z2;
 295                 bz->f2 = new_f2;        /* next buffer */
 296                 skb = NULL;
 297         } else if (!(skb = dev_alloc_skb(count - 3)))
 298                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 299         else {
 300                 total = count;
 301                 count -= 3;
 302                 ptr = skb_put(skb, count);
 303
 304                 if (zp->z2 + count <= B_FIFO_SIZE + B_SUB_VAL)
 305                         maxlen = count;         /* complete transfer */
 306                 else
 307                         maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 308
 309                 ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 310                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 311                 count -= maxlen;
 312
 313                 if (count) {    /* rest remaining */
 314                         ptr += maxlen;
 315                         ptr1 = bdata;   /* start of buffer */
 316                         memcpy(ptr, ptr1, count);       /* rest */
 317                 }
 318                 bz->za[new_f2].z2 = new_z2;
 319                 bz->f2 = new_f2;        /* next buffer */
 320
 321         }
 322         return (skb);
 323 }
 324
 325 /*******************************/
 326 /* D-channel receive procedure */
 327 /*******************************/
 328 static
 329 int
 330 receive_dmsg(struct IsdnCardState *cs)
 331 {
 332         struct sk_buff *skb;
 333         int maxlen;
 334         int rcnt, total;
 335         int count = 5;
 336         u_char *ptr, *ptr1;
 337         dfifo_type *df;
 338         z_type *zp;
 339
 340         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_rx;
 341         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 342                 debugl1(cs, "rec_dmsg blocked");
 343                 return (1);
 344         }
 345         while (((df->f1 & D_FREG_MASK) != (df->f2 & D_FREG_MASK)) && count--) {
 346                 zp = &df->za[df->f2 & D_FREG_MASK];
 347                 rcnt = zp->z1 - zp->z2;
 348                 if (rcnt < 0)
 349                         rcnt += D_FIFO_SIZE;
 350                 rcnt++;
 351                 if (cs->debug & L1_DEB_ISAC)
 352                         debugl1(cs, "hfcpci recd f1(%d) f2(%d) z1(%x) z2(%x) cnt(%d)",
 353                                 df->f1, df->f2, zp->z1, zp->z2, rcnt);
 354
 355                 if ((rcnt > MAX_DFRAME_LEN + 3) || (rcnt < 4) ||
 356                     (df->data[zp->z1])) {
 357                         if (cs->debug & L1_DEB_WARN)
 358                                 debugl1(cs, "empty_fifo hfcpci paket inv. len %d or crc %d", rcnt, df->data[zp->z1]);
 359 #ifdef ERROR_STATISTIC
 360                         cs->err_rx++;
 361 #endif
 362                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 363                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + rcnt) & (D_FIFO_SIZE - 1);
 364                 } else if ((skb = dev_alloc_skb(rcnt - 3))) {
 365                         total = rcnt;
 366                         rcnt -= 3;
 367                         ptr = skb_put(skb, rcnt);
 368
 369                         if (zp->z2 + rcnt <= D_FIFO_SIZE)
 370                                 maxlen = rcnt;  /* complete transfer */
 371                         else
 372                                 maxlen = D_FIFO_SIZE - zp->z2;  /* maximum */
 373
 374                         ptr1 = df->data + zp->z2;       /* start of data */
 375                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 376                         rcnt -= maxlen;
 377
 378                         if (rcnt) {     /* rest remaining */
 379                                 ptr += maxlen;
 380                                 ptr1 = df->data;        /* start of buffer */
 381                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 382                         }
 383                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 384                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + total) & (D_FIFO_SIZE - 1);
 385
 386                         skb_queue_tail(&cs->rq, skb);
 387                         sched_event_D_pci(cs, D_RCVBUFREADY);
 388                 } else
 389                         printk(KERN_WARNING "HFC-PCI: D receive out of memory\n");
 390         }
 391         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 392         return (1);
 393 }
 394
 395 /*******************************************************************************/
 396 /* check for transparent receive data and read max one threshold size if avail */
 397 /*******************************************************************************/
 398 static int
 399 hfcpci_empty_fifo_trans(struct BCState *bcs, bzfifo_type * bz, u_char * bdata)
 400 {
 401         unsigned short *z1r, *z2r;
 402         int new_z2, fcnt, maxlen;
 403         struct sk_buff *skb;
 404         u_char *ptr, *ptr1;
 405
 406         z1r = &bz->za[MAX_B_FRAMES].z1;         /* pointer to z reg */
 407         z2r = z1r + 1;
 408
 409         if (!(fcnt = *z1r - *z2r))
 410                 return (0);     /* no data avail */
 411
 412         if (fcnt <= 0)
 413                 fcnt += B_FIFO_SIZE;    /* bytes actually buffered */
 414         if (fcnt > HFCPCI_BTRANS_THRESHOLD)
 415                 fcnt = HFCPCI_BTRANS_THRESHOLD;         /* limit size */
 416
 417         new_z2 = *z2r + fcnt;   /* new position in fifo */
 418         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 419                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 420
 421         if (!(skb = dev_alloc_skb(fcnt)))
 422                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 423         else {
 424                 ptr = skb_put(skb, fcnt);
 425                 if (*z2r + fcnt <= B_FIFO_SIZE + B_SUB_VAL)
 426                         maxlen = fcnt;  /* complete transfer */
 427                 else
 428                         maxlen = B_FIFO_SIZE + B_SUB_VAL - *z2r;        /* maximum */
 429
 430                 ptr1 = bdata + (*z2r - B_SUB_VAL);      /* start of data */
 431                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 432                 fcnt -= maxlen;
 433
 434                 if (fcnt) {     /* rest remaining */
 435                         ptr += maxlen;
 436                         ptr1 = bdata;   /* start of buffer */
 437                         memcpy(ptr, ptr1, fcnt);        /* rest */
 438                 }
 439                 skb_queue_tail(&bcs->rqueue, skb);
 440                 hfcpci_sched_event(bcs, B_RCVBUFREADY);
 441         }
 442
 443         *z2r = new_z2;          /* new position */
 444         return (1);
 445 }                               /* hfcpci_empty_fifo_trans */
 446
 447 /**********************************/
 448 /* B-channel main receive routine */
 449 /**********************************/
 450 static void
 451 main_rec_hfcpci(struct BCState *bcs)
 452 {
 453         struct IsdnCardState *cs = bcs->cs;
 454         int rcnt, real_fifo;
 455         int receive, count = 5;
 456         struct sk_buff *skb;
 457         bzfifo_type *bz;
 458         u_char *bdata;
 459         z_type *zp;
 460
 461
 462         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 463                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 464                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 465                 real_fifo = 1;
 466         } else {
 467                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 468                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b1;
 469                 real_fifo = 0;
 470         }
 471       Begin:
 472         count--;
 473         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 474                 debugl1(cs, "rec_data %d blocked", bcs->channel);
 475                 return;
 476         }
 477         if (bz->f1 != bz->f2) {
 478                 if (cs->debug & L1_DEB_HSCX)
 479                         debugl1(cs, "hfcpci rec %d f1(%d) f2(%d)",
 480                                 bcs->channel, bz->f1, bz->f2);
 481                 zp = &bz->za[bz->f2];
 482
 483                 rcnt = zp->z1 - zp->z2;
 484                 if (rcnt < 0)
 485                         rcnt += B_FIFO_SIZE;
 486                 rcnt++;
 487                 if (cs->debug & L1_DEB_HSCX)
 488                         debugl1(cs, "hfcpci rec %d z1(%x) z2(%x) cnt(%d)",
 489                                 bcs->channel, zp->z1, zp->z2, rcnt);
 490                 if ((skb = hfcpci_empty_fifo(bcs, bz, bdata, rcnt))) {
 491                         skb_queue_tail(&bcs->rqueue, skb);
 492                         hfcpci_sched_event(bcs, B_RCVBUFREADY);
 493                 }
 494                 rcnt = bz->f1 - bz->f2;
 495                 if (rcnt < 0)
 496                         rcnt += MAX_B_FRAMES + 1;
 497                 if (cs->hw.hfcpci.last_bfifo_cnt[real_fifo] > rcnt + 1) {
 498                         rcnt = 0;
 499                         hfcpci_clear_fifo_rx(cs, real_fifo);
 500                 }
 501                 cs->hw.hfcpci.last_bfifo_cnt[real_fifo] = rcnt;
 502                 if (rcnt > 1)
 503                         receive = 1;
 504                 else
 505                         receive = 0;
 506         } else if (bcs->mode == L1_MODE_TRANS)
 507                 receive = hfcpci_empty_fifo_trans(bcs, bz, bdata);
 508         else
 509                 receive = 0;
 510         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 511         if (count && receive)
 512                 goto Begin;
 513         return;
 514 }
 515
 516 /**************************/
 517 /* D-channel send routine */
 518 /**************************/
 519 static void
 520 hfcpci_fill_dfifo(struct IsdnCardState *cs)
 521 {
 522         int fcnt;
 523         int count, new_z1, maxlen;
 524         dfifo_type *df;
 525         u_char *src, *dst, new_f1;
 526
 527         if (!cs->tx_skb)
 528                 return;
 529         if (cs->tx_skb->len <= 0)
 530                 return;
 531
 532         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_tx;
 533
 534         if (cs->debug & L1_DEB_ISAC)
 535                 debugl1(cs, "hfcpci_fill_Dfifo f1(%d) f2(%d) z1(f1)(%x)",
 536                         df->f1, df->f2,
 537                         df->za[df->f1 & D_FREG_MASK].z1);
 538         fcnt = df->f1 - df->f2; /* frame count actually buffered */
 539         if (fcnt < 0)
 540                 fcnt += (MAX_D_FRAMES + 1);     /* if wrap around */
 541         if (fcnt > (MAX_D_FRAMES - 1)) {
 542                 if (cs->debug & L1_DEB_ISAC)
 543                         debugl1(cs, "hfcpci_fill_Dfifo more as 14 frames");
 544 #ifdef ERROR_STATISTIC
 545                 cs->err_tx++;
 546 #endif
 547                 return;
 548         }
 549         /* now determine free bytes in FIFO buffer */
 550         count = df->za[df->f2 & D_FREG_MASK].z2 - df->za[df->f1 & D_FREG_MASK].z1 - 1;
 551         if (count <= 0)
 552                 count += D_FIFO_SIZE;   /* count now contains available bytes */
 553
 554         if (cs->debug & L1_DEB_ISAC)
 555                 debugl1(cs, "hfcpci_fill_Dfifo count(%ld/%d)",
 556                         cs->tx_skb->len, count);
 557         if (count < cs->tx_skb->len) {
 558                 if (cs->debug & L1_DEB_ISAC)
 559                         debugl1(cs, "hfcpci_fill_Dfifo no fifo mem");
 560                 return;
 561         }
 562         count = cs->tx_skb->len;        /* get frame len */
 563         new_z1 = (df->za[df->f1 & D_FREG_MASK].z1 + count) & (D_FIFO_SIZE - 1);
 564         new_f1 = ((df->f1 + 1) & D_FREG_MASK) | (D_FREG_MASK + 1);
 565         src = cs->tx_skb->data; /* source pointer */
 566         dst = df->data + df->za[df->f1 & D_FREG_MASK].z1;
 567         maxlen = D_FIFO_SIZE - df->za[df->f1 & D_FREG_MASK].z1;         /* end fifo */
 568         if (maxlen > count)
 569                 maxlen = count; /* limit size */
 570         memcpy(dst, src, maxlen);       /* first copy */
 571
 572         count -= maxlen;        /* remaining bytes */
 573         if (count) {
 574                 dst = df->data; /* start of buffer */
 575                 src += maxlen;  /* new position */
 576                 memcpy(dst, src, count);
 577         }
 578         df->za[new_f1 & D_FREG_MASK].z1 = new_z1;       /* for next buffer */
 579         df->za[df->f1 & D_FREG_MASK].z1 = new_z1;       /* new pos actual buffer */
 580         df->f1 = new_f1;        /* next frame */
 581
 582         dev_kfree_skb_any(cs->tx_skb);
 583         cs->tx_skb = NULL;
 584         return;
 585 }
 586
 587 /**************************/
 588 /* B-channel send routine */
 589 /**************************/
 590 static void
 591 hfcpci_fill_fifo(struct BCState *bcs)
 592 {
 593         struct IsdnCardState *cs = bcs->cs;
 594         int maxlen, fcnt;
 595         int count, new_z1;
 596         bzfifo_type *bz;
 597         u_char *bdata;
 598         u_char new_f1, *src, *dst;
 599         unsigned short *z1t, *z2t;
 600
 601         if (!bcs->tx_skb)
 602                 return;
 603         if (bcs->tx_skb->len <= 0)
 604                 return;
 605
 606         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 607                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 608                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b2;
 609         } else {
 610                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 611                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b1;
 612         }
 613
 614         if (bcs->mode == L1_MODE_TRANS) {
 615                 z1t = &bz->za[MAX_B_FRAMES].z1;
 616                 z2t = z1t + 1;
 617                 if (cs->debug & L1_DEB_HSCX)
 618                         debugl1(cs, "hfcpci_fill_fifo_trans %d z1(%x) z2(%x)",
 619                                 bcs->channel, *z1t, *z2t);
 620                 fcnt = *z2t - *z1t;
 621                 if (fcnt <= 0)
 622                         fcnt += B_FIFO_SIZE;    /* fcnt contains available bytes in fifo */
 623                 fcnt = B_FIFO_SIZE - fcnt;      /* remaining bytes to send */
 624
 625                 while ((fcnt < 2 * HFCPCI_BTRANS_THRESHOLD) && (bcs->tx_skb)) {
 626                         if (bcs->tx_skb->len < B_FIFO_SIZE - fcnt) {
 627                                 /* data is suitable for fifo */
 628                                 count = bcs->tx_skb->len;
 629
 630                                 new_z1 = *z1t + count;  /* new buffer Position */
 631                                 if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 632                                         new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 633                                 src = bcs->tx_skb->data;        /* source pointer */
 634                                 dst = bdata + (*z1t - B_SUB_VAL);
 635                                 maxlen = (B_FIFO_SIZE + B_SUB_VAL) - *z1t;      /* end of fifo */
 636                                 if (maxlen > count)
 637                                         maxlen = count;         /* limit size */
 638                                 memcpy(dst, src, maxlen);       /* first copy */
 639
 640                                 count -= maxlen;        /* remaining bytes */
 641                                 if (count) {
 642                                         dst = bdata;    /* start of buffer */
 643                                         src += maxlen;  /* new position */
 644                                         memcpy(dst, src, count);
 645                                 }
 646                                 bcs->tx_cnt -= bcs->tx_skb->len;
 647                                 fcnt += bcs->tx_skb->len;
 648                                 *z1t = new_z1;  /* now send data */
 649                         } else if (cs->debug & L1_DEB_HSCX)
 650                                 debugl1(cs, "hfcpci_fill_fifo_trans %d frame length %d discarded",
 651                                         bcs->channel, bcs->tx_skb->len);
 652
 653                         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 654                                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 655                                 u_long  flags;
 656                                 spin_lock_irqsave(&bcs->aclock, flags);
 657                                 bcs->ackcnt += bcs->tx_skb->len;
 658                                 spin_unlock_irqrestore(&bcs->aclock, flags);
 659                                 schedule_event(bcs, B_ACKPENDING);
 660                         }
 661
 662                         dev_kfree_skb_any(bcs->tx_skb);
 663                         bcs->tx_skb = skb_dequeue(&bcs->squeue);        /* fetch next data */
 664                 }
 665                 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 666                 return;
 667         }
 668         if (cs->debug & L1_DEB_HSCX)
 669                 debugl1(cs, "hfcpci_fill_fifo_hdlc %d f1(%d) f2(%d) z1(f1)(%x)",
 670                         bcs->channel, bz->f1, bz->f2,
 671                         bz->za[bz->f1].z1);
 672
 673         fcnt = bz->f1 - bz->f2; /* frame count actually buffered */
 674         if (fcnt < 0)
 675                 fcnt += (MAX_B_FRAMES + 1);     /* if wrap around */
 676         if (fcnt > (MAX_B_FRAMES - 1)) {
 677                 if (cs->debug & L1_DEB_HSCX)
 678                         debugl1(cs, "hfcpci_fill_Bfifo more as 14 frames");
 679                 return;
 680         }
 681         /* now determine free bytes in FIFO buffer */
 682         count = bz->za[bz->f2].z2 - bz->za[bz->f1].z1 - 1;
 683         if (count <= 0)
 684                 count += B_FIFO_SIZE;   /* count now contains available bytes */
 685
 686         if (cs->debug & L1_DEB_HSCX)
 687                 debugl1(cs, "hfcpci_fill_fifo %d count(%ld/%d),%lx",
 688                         bcs->channel, bcs->tx_skb->len,
 689                         count, current->state);
 690
 691         if (count < bcs->tx_skb->len) {
 692                 if (cs->debug & L1_DEB_HSCX)
 693                         debugl1(cs, "hfcpci_fill_fifo no fifo mem");
 694                 return;
 695         }
 696         count = bcs->tx_skb->len;       /* get frame len */
 697         new_z1 = bz->za[bz->f1].z1 + count;     /* new buffer Position */
 698         if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 699                 new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 700
 701         new_f1 = ((bz->f1 + 1) & MAX_B_FRAMES);
 702         src = bcs->tx_skb->data;        /* source pointer */
 703         dst = bdata + (bz->za[bz->f1].z1 - B_SUB_VAL);
 704         maxlen = (B_FIFO_SIZE + B_SUB_VAL) - bz->za[bz->f1].z1;         /* end fifo */
 705         if (maxlen > count)
 706                 maxlen = count; /* limit size */
 707         memcpy(dst, src, maxlen);       /* first copy */
 708
 709         count -= maxlen;        /* remaining bytes */
 710         if (count) {
 711                 dst = bdata;    /* start of buffer */
 712                 src += maxlen;  /* new position */
 713                 memcpy(dst, src, count);
 714         }
 715         bcs->tx_cnt -= bcs->tx_skb->len;
 716         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 717                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 718                 u_long  flags;
 719                 spin_lock_irqsave(&bcs->aclock, flags);
 720                 bcs->ackcnt += bcs->tx_skb->len;
 721                 spin_unlock_irqrestore(&bcs->aclock, flags);
 722                 schedule_event(bcs, B_ACKPENDING);
 723         }
 724
 725         bz->za[new_f1].z1 = new_z1;     /* for next buffer */
 726         bz->f1 = new_f1;        /* next frame */
 727
 728         dev_kfree_skb_any(bcs->tx_skb);
 729         bcs->tx_skb = NULL;
 730         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 731         return;
 732 }
 733
 734 /**********************************************/
 735 /* D-channel l1 state call for leased NT-mode */
 736 /**********************************************/
 737 static void
 738 dch_nt_l2l1(struct PStack *st, int pr, void *arg)
 739 {
 740         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
 741
 742         switch (pr) {
 743                 case (PH_DATA | REQUEST):
 744                 case (PH_PULL | REQUEST):
 745                 case (PH_PULL | INDICATION):
 746                         st->l1.l1hw(st, pr, arg);
 747                         break;
 748                 case (PH_ACTIVATE | REQUEST):
 749                         st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
 750                         break;
 751                 case (PH_TESTLOOP | REQUEST):
 752                         if (1 & (long) arg)
 753                                 debugl1(cs, "PH_TEST_LOOP B1");
 754                         if (2 & (long) arg)
 755                                 debugl1(cs, "PH_TEST_LOOP B2");
 756                         if (!(3 & (long) arg))
 757                                 debugl1(cs, "PH_TEST_LOOP DISABLED");
 758                         st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
 759                         break;
 760                 default:
 761                         if (cs->debug)
 762                                 debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr);
 763                         break;
 764         }
 765 }
 766
 767
 768
 769 /***********************/
 770 /* set/reset echo mode */
 771 /***********************/
 772 static int
 773 hfcpci_auxcmd(struct IsdnCardState *cs, isdn_ctrl * ic)
 774 {
 775         u_long  flags;
 776         int     i = *(unsigned int *) ic->parm.num;
 777
 778         if ((ic->arg == 98) &&
 779             (!(cs->hw.hfcpci.int_m1 & (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC + HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC)))) {
 780                 spin_lock_irqsave(&cs->lock, flags);
 781                 Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_NT); /* ST-Bit delay for NT-Mode */
 782                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 0);    /* HFC ST G0 */
 783                 udelay(10);
 784                 cs->hw.hfcpci.sctrl |= SCTRL_MODE_NT;
 785                 Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);       /* set NT-mode */
 786                 udelay(10);
 787                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 1);    /* HFC ST G1 */
 788                 udelay(10);
 789                 Write_hfc(cs, HFCPCI_STATES, 1 | HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
 790                 cs->dc.hfcpci.ph_state = 1;
 791                 cs->hw.hfcpci.nt_mode = 1;
 792                 cs->hw.hfcpci.nt_timer = 0;
 793                 cs->stlist->l2.l2l1 = dch_nt_l2l1;
 794                 spin_unlock_irqrestore(&cs->lock, flags);
 795                 debugl1(cs, "NT mode activated");
 796                 return (0);
 797         }
 798         if ((cs->chanlimit > 1) || (cs->hw.hfcpci.bswapped) ||
 799             (cs->hw.hfcpci.nt_mode) || (ic->arg != 12))
 800                 return (-EINVAL);
 801
 802         spin_lock_irqsave(&cs->lock, flags);
 803         if (i) {
 804                 cs->logecho = 1;
 805                 cs->hw.hfcpci.trm |= 0x20;      /* enable echo chan */
 806                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_B2REC;
 807                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2RX;
 808         } else {
 809                 cs->logecho = 0;
 810                 cs->hw.hfcpci.trm &= ~0x20;     /* disable echo chan */
 811                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_B2REC;
 812                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2RX;
 813         }
 814         cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
 815         cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
 816         cs->hw.hfcpci.conn |= 0x10;     /* B2-IOM -> B2-ST */
 817         cs->hw.hfcpci.ctmt &= ~2;
 818         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 819         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 820         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 821         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 822         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 823         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 824         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 825         spin_unlock_irqrestore(&cs->lock, flags);
 826         return (0);
 827 }                               /* hfcpci_auxcmd */
 828
 829 /*****************************/
 830 /* E-channel receive routine */
 831 /*****************************/
 832 static void
 833 receive_emsg(struct IsdnCardState *cs)
 834 {
 835         int rcnt;
 836         int receive, count = 5;
 837         bzfifo_type *bz;
 838         u_char *bdata;
 839         z_type *zp;
 840         u_char *ptr, *ptr1, new_f2;
 841         int total, maxlen, new_z2;
 842         u_char e_buffer[256];
 843
 844         bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 845         bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 846       Begin:
 847         count--;
 848         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 849                 debugl1(cs, "echo_rec_data blocked");
 850                 return;
 851         }
 852         if (bz->f1 != bz->f2) {
 853                 if (cs->debug & L1_DEB_ISAC)
 854                         debugl1(cs, "hfcpci e_rec f1(%d) f2(%d)",
 855                                 bz->f1, bz->f2);
 856                 zp = &bz->za[bz->f2];
 857
 858                 rcnt = zp->z1 - zp->z2;
 859                 if (rcnt < 0)
 860                         rcnt += B_FIFO_SIZE;
 861                 rcnt++;
 862                 if (cs->debug & L1_DEB_ISAC)
 863                         debugl1(cs, "hfcpci e_rec z1(%x) z2(%x) cnt(%d)",
 864                                 zp->z1, zp->z2, rcnt);
 865                 new_z2 = zp->z2 + rcnt;         /* new position in fifo */
 866                 if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 867                         new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 868                 new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 869                 if ((rcnt > 256 + 3) || (count < 4) ||
 870                     (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 871                         if (cs->debug & L1_DEB_WARN)
 872                                 debugl1(cs, "hfcpci_empty_echan: incoming packet invalid length %d or crc", rcnt);
 873                         bz->za[new_f2].z2 = new_z2;
 874                         bz->f2 = new_f2;        /* next buffer */
 875                 } else {
 876                         total = rcnt;
 877                         rcnt -= 3;
 878                         ptr = e_buffer;
 879
 880                         if (zp->z2 <= B_FIFO_SIZE + B_SUB_VAL)
 881                                 maxlen = rcnt;  /* complete transfer */
 882                         else
 883                                 maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 884
 885                         ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 886                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 887                         rcnt -= maxlen;
 888
 889                         if (rcnt) {     /* rest remaining */
 890                                 ptr += maxlen;
 891                                 ptr1 = bdata;   /* start of buffer */
 892                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 893                         }
 894                         bz->za[new_f2].z2 = new_z2;
 895                         bz->f2 = new_f2;        /* next buffer */
 896                         if (cs->debug & DEB_DLOG_HEX) {
 897                                 ptr = cs->dlog;
 898                                 if ((total - 3) < MAX_DLOG_SPACE / 3 - 10) {
 899                                         *ptr++ = 'E';
 900                                         *ptr++ = 'C';
 901                                         *ptr++ = 'H';
 902                                         *ptr++ = 'O';
 903                                         *ptr++ = ':';
 904                                         ptr += QuickHex(ptr, e_buffer, total - 3);
 905                                         ptr--;
 906                                         *ptr++ = '\n';
 907                                         *ptr = 0;
 908                                         HiSax_putstatus(cs, NULL, cs->dlog);
 909                                 } else
 910                                         HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", total - 3);
 911                         }
 912                 }
 913
 914                 rcnt = bz->f1 - bz->f2;
 915                 if (rcnt < 0)
 916                         rcnt += MAX_B_FRAMES + 1;
 917                 if (rcnt > 1)
 918                         receive = 1;
 919                 else
 920                         receive = 0;
 921         } else
 922                 receive = 0;
 923         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 924         if (count && receive)
 925                 goto Begin;
 926         return;
 927 }                               /* receive_emsg */
 928
 929 /*********************/
 930 /* Interrupt handler */
 931 /*********************/
 932 static irqreturn_t
 933 hfcpci_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 934 {
 935         u_long flags;
 936         struct IsdnCardState *cs = dev_id;
 937         u_char exval;
 938         struct BCState *bcs;
 939         int count = 15;
 940         u_char val, stat;
 941
 942         if (!(cs->hw.hfcpci.int_m2 & 0x08)) {
 943                 debugl1(cs, "HFC-PCI: int_m2 %x not initialised", cs->hw.hfcpci.int_m2);
 944                 return IRQ_NONE;        /* not initialised */
 945         }
 946         spin_lock_irqsave(&cs->lock, flags);
 947         if (HFCPCI_ANYINT & (stat = Read_hfc(cs, HFCPCI_STATUS))) {
 948                 val = Read_hfc(cs, HFCPCI_INT_S1);
 949                 if (cs->debug & L1_DEB_ISAC)
 950                         debugl1(cs, "HFC-PCI: stat(%02x) s1(%02x)", stat, val);
 951         } else {
 952                 spin_unlock_irqrestore(&cs->lock, flags);
 953                 return IRQ_NONE;
 954         }
 955         if (cs->debug & L1_DEB_ISAC)
 956                 debugl1(cs, "HFC-PCI irq %x %s", val,
 957                         test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
 958                         "locked" : "unlocked");
 959         val &= cs->hw.hfcpci.int_m1;
 960         if (val & 0x40) {       /* state machine irq */
 961                 exval = Read_hfc(cs, HFCPCI_STATES) & 0xf;
 962                 if (cs->debug & L1_DEB_ISAC)
 963                         debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcpci.ph_state,
 964                                 exval);
 965                 cs->dc.hfcpci.ph_state = exval;
 966                 sched_event_D_pci(cs, D_L1STATECHANGE);
 967                 val &= ~0x40;
 968         }
 969         if (val & 0x80) {       /* timer irq */
 970                 if (cs->hw.hfcpci.nt_mode) {
 971                         if ((--cs->hw.hfcpci.nt_timer) < 0)
 972                                 sched_event_D_pci(cs, D_L1STATECHANGE);
 973                 }
 974                 val &= ~0x80;
 975                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
 976         }
 977         while (val) {
 978                 if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 979                         cs->hw.hfcpci.int_s1 |= val;
 980                         spin_unlock_irqrestore(&cs->lock, flags);
 981                         return IRQ_HANDLED;
 982                 }
 983                 if (cs->hw.hfcpci.int_s1 & 0x18) {
 984                         exval = val;
 985                         val = cs->hw.hfcpci.int_s1;
 986                         cs->hw.hfcpci.int_s1 = exval;
 987                 }
 988                 if (val & 0x08) {
 989                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
 990                                 if (cs->debug)
 991                                         debugl1(cs, "hfcpci spurious 0x08 IRQ");
 992                         } else
 993                                 main_rec_hfcpci(bcs);
 994                 }
 995                 if (val & 0x10) {
 996                         if (cs->logecho)
 997                                 receive_emsg(cs);
 998                         else if (!(bcs = Sel_BCS(cs, 1))) {
 999                                 if (cs->debug)
1000                                         debugl1(cs, "hfcpci spurious 0x10 IRQ");
1001                         } else
1002                                 main_rec_hfcpci(bcs);
1003                 }
1004                 if (val & 0x01) {
1005                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
1006                                 if (cs->debug)
1007                                         debugl1(cs, "hfcpci spurious 0x01 IRQ");
1008                         } else {
1009                                 if (bcs->tx_skb) {
1010                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1011                                                 hfcpci_fill_fifo(bcs);
1012                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1013                                         } else
1014                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1015                                 } else {
1016                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1017                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1018                                                         hfcpci_fill_fifo(bcs);
1019                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1020                                                 } else
1021                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1022                                         } else {
1023                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1024                                         }
1025                                 }
1026                         }
1027                 }
1028                 if (val & 0x02) {
1029                         if (!(bcs = Sel_BCS(cs, 1))) {
1030                                 if (cs->debug)
1031                                         debugl1(cs, "hfcpci spurious 0x02 IRQ");
1032                         } else {
1033                                 if (bcs->tx_skb) {
1034                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1035                                                 hfcpci_fill_fifo(bcs);
1036                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1037                                         } else
1038                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1039                                 } else {
1040                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1041                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1042                                                         hfcpci_fill_fifo(bcs);
1043                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1044                                                 } else
1045                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1046                                         } else {
1047                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1048                                         }
1049                                 }
1050                         }
1051                 }
1052                 if (val & 0x20) {       /* receive dframe */
1053                         receive_dmsg(cs);
1054                 }
1055                 if (val & 0x04) {       /* dframe transmitted */
1056                         if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
1057                                 del_timer(&cs->dbusytimer);
1058                         if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
1059                                 sched_event_D_pci(cs, D_CLEARBUSY);
1060                         if (cs->tx_skb) {
1061                                 if (cs->tx_skb->len) {
1062                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1063                                                 hfcpci_fill_dfifo(cs);
1064                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1065                                         } else {
1066                                                 debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1067                                         }
1068                                         goto afterXPR;
1069                                 } else {
1070                                         dev_kfree_skb_irq(cs->tx_skb);
1071                                         cs->tx_cnt = 0;
1072                                         cs->tx_skb = NULL;
1073                                 }
1074                         }
1075                         if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
1076                                 cs->tx_cnt = 0;
1077                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1078                                         hfcpci_fill_dfifo(cs);
1079                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1080                                 } else {
1081                                         debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1082                                 }
1083                         } else
1084                                 sched_event_D_pci(cs, D_XMTBUFREADY);
1085                 }
1086               afterXPR:
1087                 if (cs->hw.hfcpci.int_s1 && count--) {
1088                         val = cs->hw.hfcpci.int_s1;
1089                         cs->hw.hfcpci.int_s1 = 0;
1090                         if (cs->debug & L1_DEB_ISAC)
1091                                 debugl1(cs, "HFC-PCI irq %x loop %d", val, 15 - count);
1092                 } else
1093                         val = 0;
1094         }
1095         spin_unlock_irqrestore(&cs->lock, flags);
1096         return IRQ_HANDLED;
1097 }
1098
1099 /********************************************************************/
1100 /* timer callback for D-chan busy resolution. Currently no function */
1101 /********************************************************************/
1102 static void
1103 hfcpci_dbusy_timer(struct IsdnCardState *cs)
1104 {
1105 }
1106
1107 /*************************************/
1108 /* Layer 1 D-channel hardware access */
1109 /*************************************/
1110 static void
1111 HFCPCI_l1hw(struct PStack *st, int pr, void *arg)
1112 {
1113         u_long flags;
1114         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
1115         struct sk_buff *skb = arg;
1116
1117         switch (pr) {
1118                 case (PH_DATA | REQUEST):
1119                         if (cs->debug & DEB_DLOG_HEX)
1120                                 LogFrame(cs, skb->data, skb->len);
1121                         if (cs->debug & DEB_DLOG_VERBOSE)
1122                                 dlogframe(cs, skb, 0);
1123                         spin_lock_irqsave(&cs->lock, flags);
1124                         if (cs->tx_skb) {
1125                                 skb_queue_tail(&cs->sq, skb);
1126 #ifdef L2FRAME_DEBUG            /* psa */
1127                                 if (cs->debug & L1_DEB_LAPD)
1128                                         Logl2Frame(cs, skb, "PH_DATA Queued", 0);
1129 #endif
1130                         } else {
1131                                 cs->tx_skb = skb;
1132                                 cs->tx_cnt = 0;
1133 #ifdef L2FRAME_DEBUG            /* psa */
1134                                 if (cs->debug & L1_DEB_LAPD)
1135                                         Logl2Frame(cs, skb, "PH_DATA", 0);
1136 #endif
1137                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1138                                         hfcpci_fill_dfifo(cs);
1139                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1140                                 } else
1141                                         debugl1(cs, "hfcpci_fill_dfifo blocked");
1142
1143                         }
1144                         spin_unlock_irqrestore(&cs->lock, flags);
1145                         break;
1146                 case (PH_PULL | INDICATION):
1147                         spin_lock_irqsave(&cs->lock, flags);
1148                         if (cs->tx_skb) {
1149                                 if (cs->debug & L1_DEB_WARN)
1150                                         debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
1151                                 skb_queue_tail(&cs->sq, skb);
1152                                 spin_unlock_irqrestore(&cs->lock, flags);
1153                                 break;
1154                         }
1155                         if (cs->debug & DEB_DLOG_HEX)
1156                                 LogFrame(cs, skb->data, skb->len);
1157                         if (cs->debug & DEB_DLOG_VERBOSE)
1158                                 dlogframe(cs, skb, 0);
1159                         cs->tx_skb = skb;
1160                         cs->tx_cnt = 0;
1161 #ifdef L2FRAME_DEBUG            /* psa */
1162                         if (cs->debug & L1_DEB_LAPD)
1163                                 Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
1164 #endif
1165                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1166                                 hfcpci_fill_dfifo(cs);
1167                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1168                         } else
1169                                 debugl1(cs, "hfcpci_fill_dfifo blocked");
1170                         spin_unlock_irqrestore(&cs->lock, flags);
1171                         break;
1172                 case (PH_PULL | REQUEST):
1173 #ifdef L2FRAME_DEBUG            /* psa */
1174                         if (cs->debug & L1_DEB_LAPD)
1175                                 debugl1(cs, "-> PH_REQUEST_PULL");
1176 #endif
1177                         if (!cs->tx_skb) {
1178                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1179                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1180                         } else
1181                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1182                         break;
1183                 case (HW_RESET | REQUEST):
1184                         spin_lock_irqsave(&cs->lock, flags);
1185                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 3);    /* HFC ST 3 */
1186                         udelay(6);
1187                         Write_hfc(cs, HFCPCI_STATES, 3);        /* HFC ST 2 */
1188                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1189                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1190                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
1191                         spin_unlock_irqrestore(&cs->lock, flags);
1192                         l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
1193                         break;
1194                 case (HW_ENABLE | REQUEST):
1195                         spin_lock_irqsave(&cs->lock, flags);
1196                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_DO_ACTION);
1197                         spin_unlock_irqrestore(&cs->lock, flags);
1198                         break;
1199                 case (HW_DEACTIVATE | 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_INFO3 | REQUEST):
1206                         spin_lock_irqsave(&cs->lock, flags);
1207                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1208                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1209                         spin_unlock_irqrestore(&cs->lock, flags);
1210                         break;
1211                 case (HW_TESTLOOP | REQUEST):
1212                         spin_lock_irqsave(&cs->lock, flags);
1213                         switch ((int) arg) {
1214                                 case (1):
1215                                         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* tx slot */
1216                                         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* rx slot */
1217                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~7) | 1;
1218                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1219                                         break;
1220
1221                                 case (2):
1222                                         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* tx slot */
1223                                         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* rx slot */
1224                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~0x38) | 0x08;
1225                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1226                                         break;
1227
1228                                 default:
1229                                         spin_unlock_irqrestore(&cs->lock, flags);
1230                                         if (cs->debug & L1_DEB_WARN)
1231                                                 debugl1(cs, "hfcpci_l1hw loop invalid %4x", (int) arg);
1232                                         return;
1233                         }
1234                         cs->hw.hfcpci.trm |= 0x80;      /* enable IOM-loop */
1235                         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
1236                         spin_unlock_irqrestore(&cs->lock, flags);
1237                         break;
1238                 default:
1239                         if (cs->debug & L1_DEB_WARN)
1240                                 debugl1(cs, "hfcpci_l1hw unknown pr %4x", pr);
1241                         break;
1242         }
1243 }
1244
1245 /***********************************************/
1246 /* called during init setting l1 stack pointer */
1247 /***********************************************/
1248 static void
1249 setstack_hfcpci(struct PStack *st, struct IsdnCardState *cs)
1250 {
1251         st->l1.l1hw = HFCPCI_l1hw;
1252 }
1253
1254 /**************************************/
1255 /* send B-channel data if not blocked */
1256 /**************************************/
1257 static void
1258 hfcpci_send_data(struct BCState *bcs)
1259 {
1260         struct IsdnCardState *cs = bcs->cs;
1261
1262         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1263                 hfcpci_fill_fifo(bcs);
1264                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1265         } else
1266                 debugl1(cs, "send_data %d blocked", bcs->channel);
1267 }
1268
1269 /***************************************************************/
1270 /* activate/deactivate hardware for selected channels and mode */
1271 /***************************************************************/
1272 static void
1273 mode_hfcpci(struct BCState *bcs, int mode, int bc)
1274 {
1275         struct IsdnCardState *cs = bcs->cs;
1276         int fifo2;
1277
1278         if (cs->debug & L1_DEB_HSCX)
1279                 debugl1(cs, "HFCPCI bchannel mode %d bchan %d/%d",
1280                         mode, bc, bcs->channel);
1281         bcs->mode = mode;
1282         bcs->channel = bc;
1283         fifo2 = bc;
1284         if (cs->chanlimit > 1) {
1285                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1286                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1287         } else {
1288                 if (bc) {
1289                         if (mode != L1_MODE_NULL) {
1290                                 cs->hw.hfcpci.bswapped = 1;     /* B1 and B2 exchanged */
1291                                 cs->hw.hfcpci.sctrl_e |= 0x80;
1292                         } else {
1293                                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1294                                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1295                         }
1296                         fifo2 = 0;
1297                 } else {
1298                         cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1299                         cs->hw.hfcpci.sctrl_e &= ~0x80;
1300                 }
1301         }
1302         switch (mode) {
1303                 case (L1_MODE_NULL):
1304                         if (bc) {
1305                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
1306                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
1307                         } else {
1308                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B1_ENA;
1309                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B1_ENA;
1310                         }
1311                         if (fifo2) {
1312                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1313                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1314                         } else {
1315                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1316                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1317                         }
1318                         break;
1319                 case (L1_MODE_TRANS):
1320                         hfcpci_clear_fifo_rx(cs, fifo2);
1321                         hfcpci_clear_fifo_tx(cs, fifo2);
1322                         if (bc) {
1323                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1324                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1325                         } else {
1326                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1327                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1328                         }
1329                         if (fifo2) {
1330                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1331                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1332                                 cs->hw.hfcpci.ctmt |= 2;
1333                                 cs->hw.hfcpci.conn &= ~0x18;
1334                         } else {
1335                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1336                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1337                                 cs->hw.hfcpci.ctmt |= 1;
1338                                 cs->hw.hfcpci.conn &= ~0x03;
1339                         }
1340                         break;
1341                 case (L1_MODE_HDLC):
1342                         hfcpci_clear_fifo_rx(cs, fifo2);
1343                         hfcpci_clear_fifo_tx(cs, fifo2);
1344                         if (bc) {
1345                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1346                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1347                         } else {
1348                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1349                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1350                         }
1351                         if (fifo2) {
1352                                 cs->hw.hfcpci.last_bfifo_cnt[1] = 0;
1353                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1354                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1355                                 cs->hw.hfcpci.ctmt &= ~2;
1356                                 cs->hw.hfcpci.conn &= ~0x18;
1357                         } else {
1358                                 cs->hw.hfcpci.last_bfifo_cnt[0] = 0;
1359                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1360                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1361                                 cs->hw.hfcpci.ctmt &= ~1;
1362                                 cs->hw.hfcpci.conn &= ~0x03;
1363                         }
1364                         break;
1365                 case (L1_MODE_EXTRN):
1366                         if (bc) {
1367                                 cs->hw.hfcpci.conn |= 0x10;
1368                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1369                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1370                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1371                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1372                         } else {
1373                                 cs->hw.hfcpci.conn |= 0x02;
1374                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1375                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1376                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1377                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1378                         }
1379                         break;
1380         }
1381         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);
1382         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1383         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
1384         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
1385         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
1386         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
1387         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1388 }
1389
1390 /******************************/
1391 /* Layer2 -> Layer 1 Transfer */
1392 /******************************/
1393 static void
1394 hfcpci_l2l1(struct PStack *st, int pr, void *arg)
1395 {
1396         struct BCState  *bcs = st->l1.bcs;
1397         u_long          flags;
1398         struct sk_buff  *skb = arg;
1399
1400         switch (pr) {
1401                 case (PH_DATA | REQUEST):
1402                         spin_lock_irqsave(&bcs->cs->lock, flags);
1403                         if (bcs->tx_skb) {
1404                                 skb_queue_tail(&bcs->squeue, skb);
1405                         } else {
1406                                 bcs->tx_skb = skb;
1407 //                              test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1408                                 bcs->cs->BC_Send_Data(bcs);
1409                         }
1410                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1411                         break;
1412                 case (PH_PULL | INDICATION):
1413                         spin_lock_irqsave(&bcs->cs->lock, flags);
1414                         if (bcs->tx_skb) {
1415                                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1416                                 printk(KERN_WARNING "hfc_l2l1: this shouldn't happen\n");
1417                                 break;
1418                         }
1419 //                      test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1420                         bcs->tx_skb = skb;
1421                         bcs->cs->BC_Send_Data(bcs);
1422                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1423                         break;
1424                 case (PH_PULL | REQUEST):
1425                         if (!bcs->tx_skb) {
1426                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1427                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1428                         } else
1429                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1430                         break;
1431                 case (PH_ACTIVATE | REQUEST):
1432                         spin_lock_irqsave(&bcs->cs->lock, flags);
1433                         test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
1434                         mode_hfcpci(bcs, st->l1.mode, st->l1.bc);
1435                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1436                         l1_msg_b(st, pr, arg);
1437                         break;
1438                 case (PH_DEACTIVATE | REQUEST):
1439                         l1_msg_b(st, pr, arg);
1440                         break;
1441                 case (PH_DEACTIVATE | CONFIRM):
1442                         spin_lock_irqsave(&bcs->cs->lock, flags);
1443                         test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
1444                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1445                         mode_hfcpci(bcs, 0, st->l1.bc);
1446                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1447                         st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
1448                         break;
1449         }
1450 }
1451
1452 /******************************************/
1453 /* deactivate B-channel access and queues */
1454 /******************************************/
1455 static void
1456 close_hfcpci(struct BCState *bcs)
1457 {
1458         mode_hfcpci(bcs, 0, bcs->channel);
1459         if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
1460                 skb_queue_purge(&bcs->rqueue);
1461                 skb_queue_purge(&bcs->squeue);
1462                 if (bcs->tx_skb) {
1463                         dev_kfree_skb_any(bcs->tx_skb);
1464                         bcs->tx_skb = NULL;
1465                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1466                 }
1467         }
1468 }
1469
1470 /*************************************/
1471 /* init B-channel queues and control */
1472 /*************************************/
1473 static int
1474 open_hfcpcistate(struct IsdnCardState *cs, struct BCState *bcs)
1475 {
1476         if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
1477                 skb_queue_head_init(&bcs->rqueue);
1478                 skb_queue_head_init(&bcs->squeue);
1479         }
1480         bcs->tx_skb = NULL;
1481         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1482         bcs->event = 0;
1483         bcs->tx_cnt = 0;
1484         return (0);
1485 }
1486
1487 /*********************************/
1488 /* inits the stack for B-channel */
1489 /*********************************/
1490 static int
1491 setstack_2b(struct PStack *st, struct BCState *bcs)
1492 {
1493         bcs->channel = st->l1.bc;
1494         if (open_hfcpcistate(st->l1.hardware, bcs))
1495                 return (-1);
1496         st->l1.bcs = bcs;
1497         st->l2.l2l1 = hfcpci_l2l1;
1498         setstack_manager(st);
1499         bcs->st = st;
1500         setstack_l1_B(st);
1501         return (0);
1502 }
1503
1504 /***************************/
1505 /* handle L1 state changes */
1506 /***************************/
1507 static void
1508 hfcpci_bh(struct IsdnCardState *cs)
1509 {
1510         u_long  flags;
1511 //      struct PStack *stptr;
1512
1513         if (!cs)
1514                 return;
1515         if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
1516                 if (!cs->hw.hfcpci.nt_mode)
1517                         switch (cs->dc.hfcpci.ph_state) {
1518                                 case (0):
1519                                         l1_msg(cs, HW_RESET | INDICATION, NULL);
1520                                         break;
1521                                 case (3):
1522                                         l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
1523                                         break;
1524                                 case (8):
1525                                         l1_msg(cs, HW_RSYNC | INDICATION, NULL);
1526                                         break;
1527                                 case (6):
1528                                         l1_msg(cs, HW_INFO2 | INDICATION, NULL);
1529                                         break;
1530                                 case (7):
1531                                         l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
1532                                         break;
1533                                 default:
1534                                         break;
1535                 } else {
1536                         spin_lock_irqsave(&cs->lock, flags);
1537                         switch (cs->dc.hfcpci.ph_state) {
1538                                 case (2):
1539                                         if (cs->hw.hfcpci.nt_timer < 0) {
1540                                                 cs->hw.hfcpci.nt_timer = 0;
1541                                                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1542                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1543                                                 /* Clear already pending ints */
1544                                                 if (Read_hfc(cs, HFCPCI_INT_S1));
1545                                                 Write_hfc(cs, HFCPCI_STATES, 4 | HFCPCI_LOAD_STATE);
1546                                                 udelay(10);
1547                                                 Write_hfc(cs, HFCPCI_STATES, 4);
1548                                                 cs->dc.hfcpci.ph_state = 4;
1549                                         } else {
1550                                                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_TIMER;
1551                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1552                                                 cs->hw.hfcpci.ctmt &= ~HFCPCI_AUTO_TIMER;
1553                                                 cs->hw.hfcpci.ctmt |= HFCPCI_TIM3_125;
1554                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1555                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1556                                                 cs->hw.hfcpci.nt_timer = NT_T1_COUNT;
1557                                                 Write_hfc(cs, HFCPCI_STATES, 2 | HFCPCI_NT_G2_G3);      /* allow G2 -> G3 transition */
1558                                         }
1559                                         break;
1560                                 case (1):
1561                                 case (3):
1562                                 case (4):
1563                                         cs->hw.hfcpci.nt_timer = 0;
1564                                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1565                                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1566                                         break;
1567                                 default:
1568                                         break;
1569                         }
1570                         spin_unlock_irqrestore(&cs->lock, flags);
1571                 }
1572         }
1573         if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
1574                 DChannel_proc_rcv(cs);
1575         if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
1576                 DChannel_proc_xmt(cs);
1577 }
1578
1579
1580 /********************************/
1581 /* called for card init message */
1582 /********************************/
1583 static void __init
1584 inithfcpci(struct IsdnCardState *cs)
1585 {
1586         cs->bcs[0].BC_SetStack = setstack_2b;
1587         cs->bcs[1].BC_SetStack = setstack_2b;
1588         cs->bcs[0].BC_Close = close_hfcpci;
1589         cs->bcs[1].BC_Close = close_hfcpci;
1590         cs->dbusytimer.function = (void *) hfcpci_dbusy_timer;
1591         cs->dbusytimer.data = (long) cs;
1592         init_timer(&cs->dbusytimer);
1593         mode_hfcpci(cs->bcs, 0, 0);
1594         mode_hfcpci(cs->bcs + 1, 0, 1);
1595 }
1596
1597
1598
1599 /*******************************************/
1600 /* handle card messages from control layer */
1601 /*******************************************/
1602 static int
1603 hfcpci_card_msg(struct IsdnCardState *cs, int mt, void *arg)
1604 {
1605         u_long flags;
1606
1607         if (cs->debug & L1_DEB_ISAC)
1608                 debugl1(cs, "HFCPCI: card_msg %x", mt);
1609         switch (mt) {
1610                 case CARD_RESET:
1611                         spin_lock_irqsave(&cs->lock, flags);
1612                         reset_hfcpci(cs);
1613                         spin_unlock_irqrestore(&cs->lock, flags);
1614                         return (0);
1615                 case CARD_RELEASE:
1616                         release_io_hfcpci(cs);
1617                         return (0);
1618                 case CARD_INIT:
1619                         spin_lock_irqsave(&cs->lock, flags);
1620                         inithfcpci(cs);
1621                         reset_hfcpci(cs);
1622                         spin_unlock_irqrestore(&cs->lock, flags);
1623                         msleep(80);                             /* Timeout 80ms */
1624                         /* now switch timer interrupt off */
1625                         spin_lock_irqsave(&cs->lock, flags);
1626                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1627                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1628                         /* reinit mode reg */
1629                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1630                         spin_unlock_irqrestore(&cs->lock, flags);
1631                         return (0);
1632                 case CARD_TEST:
1633                         return (0);
1634         }
1635         return (0);
1636 }
1637
1638
1639 /* this variable is used as card index when more than one cards are present */
1640 static struct pci_dev *dev_hfcpci __initdata = NULL;
1641
1642 #endif                          /* CONFIG_PCI */
1643
1644 int __init
1645 setup_hfcpci(struct IsdnCard *card)
1646 {
1647         u_long flags;
1648         struct IsdnCardState *cs = card->cs;
1649         char tmp[64];
1650         int i;
1651         struct pci_dev *tmp_hfcpci = NULL;
1652
1653 #ifdef __BIG_ENDIAN
1654 #error "not running on big endian machines now"
1655 #endif
1656         strcpy(tmp, hfcpci_revision);
1657         printk(KERN_INFO "HiSax: HFC-PCI driver Rev. %s\n", HiSax_getrev(tmp));
1658 #ifdef CONFIG_PCI
1659         cs->hw.hfcpci.int_s1 = 0;
1660         cs->dc.hfcpci.ph_state = 0;
1661         cs->hw.hfcpci.fifo = 255;
1662         if (cs->typ == ISDN_CTYPE_HFC_PCI) {
1663                 i = 0;
1664                 while (id_list[i].vendor_id) {
1665                         tmp_hfcpci = pci_find_device(id_list[i].vendor_id,
1666                                                      id_list[i].device_id,
1667                                                      dev_hfcpci);
1668                         i++;
1669                         if (tmp_hfcpci) {
1670                                 if (pci_enable_device(tmp_hfcpci))
1671                                         continue;
1672                                 pci_set_master(tmp_hfcpci);
1673                                 if ((card->para[0]) && (card->para[0] != (tmp_hfcpci->resource[ 0].start & PCI_BASE_ADDRESS_IO_MASK)))
1674                                         continue;
1675                                 else
1676                                         break;
1677                         }
1678                 }
1679
1680                 if (tmp_hfcpci) {
1681                         i--;
1682                         dev_hfcpci = tmp_hfcpci;        /* old device */
1683                         cs->hw.hfcpci.dev = dev_hfcpci;
1684                         cs->irq = dev_hfcpci->irq;
1685                         if (!cs->irq) {
1686                                 printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
1687                                 return (0);
1688                         }
1689                         cs->hw.hfcpci.pci_io = (char *) dev_hfcpci->resource[ 1].start;
1690                         printk(KERN_INFO "HiSax: HFC-PCI card manufacturer: %s card name: %s\n", id_list[i].vendor_name, id_list[i].card_name);
1691                 } else {
1692                         printk(KERN_WARNING "HFC-PCI: No PCI card found\n");
1693                         return (0);
1694                 }
1695                 if (!cs->hw.hfcpci.pci_io) {
1696                         printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n");
1697                         return (0);
1698                 }
1699                 /* Allocate memory for FIFOS */
1700                 /* Because the HFC-PCI needs a 32K physical alignment, we */
1701                 /* need to allocate the double mem and align the address */
1702                 if (!(cs->hw.hfcpci.share_start = kmalloc(65536, GFP_KERNEL))) {
1703                         printk(KERN_WARNING "HFC-PCI: Error allocating memory for FIFO!\n");
1704                         return 0;
1705                 }
1706                 cs->hw.hfcpci.fifos = (void *)
1707                     (((ulong) cs->hw.hfcpci.share_start) & ~0x7FFF) + 0x8000;
1708                 pci_write_config_dword(cs->hw.hfcpci.dev, 0x80, (u_int) virt_to_bus(cs->hw.hfcpci.fifos));
1709                 cs->hw.hfcpci.pci_io = ioremap((ulong) cs->hw.hfcpci.pci_io, 256);
1710                 printk(KERN_INFO
1711                        "HFC-PCI: defined at mem %#x fifo %#x(%#x) IRQ %d HZ %d\n",
1712                        (u_int) cs->hw.hfcpci.pci_io,
1713                        (u_int) cs->hw.hfcpci.fifos,
1714                        (u_int) virt_to_bus(cs->hw.hfcpci.fifos),
1715                        cs->irq, HZ);
1716                 spin_lock_irqsave(&cs->lock, flags);
1717                 pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
1718                 cs->hw.hfcpci.int_m2 = 0;       /* disable alle interrupts */
1719                 cs->hw.hfcpci.int_m1 = 0;
1720                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1721                 Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
1722                 /* At this point the needed PCI config is done */
1723                 /* fifos are still not enabled */
1724                 INIT_WORK(&cs->tqueue, (void *)(void *) hfcpci_bh, cs);
1725                 cs->setstack_d = setstack_hfcpci;
1726                 cs->BC_Send_Data = &hfcpci_send_data;
1727                 cs->readisac = NULL;
1728                 cs->writeisac = NULL;
1729                 cs->readisacfifo = NULL;
1730                 cs->writeisacfifo = NULL;
1731                 cs->BC_Read_Reg = NULL;
1732                 cs->BC_Write_Reg = NULL;
1733                 cs->irq_func = &hfcpci_interrupt;
1734                 cs->irq_flags |= SA_SHIRQ;
1735                 cs->hw.hfcpci.timer.function = (void *) hfcpci_Timer;
1736                 cs->hw.hfcpci.timer.data = (long) cs;
1737                 init_timer(&cs->hw.hfcpci.timer);
1738                 cs->cardmsg = &hfcpci_card_msg;
1739                 cs->auxcmd = &hfcpci_auxcmd;
1740                 spin_unlock_irqrestore(&cs->lock, flags);
1741                 return (1);
1742         } else
1743                 return (0);     /* no valid card type */
1744 #else
1745         printk(KERN_WARNING "HFC-PCI: NO_PCI_BIOS\n");
1746         return (0);
1747 #endif                          /* CONFIG_PCI */
1748 }