drivers/isdn/hisax/hfc_pci.c

   1 /* $Id: hfc_pci.c,v 1.48.2.4 2004/02/11 13:21:33 keil Exp $
   2  *
   3  * low level driver for CCD´s hfc-pci based cards
   4  *
   5  * Author       Werner Cornelius
   6  *              based on existing driver for CCD hfc ISA cards
   7  * Copyright    by Werner Cornelius  <werner@isdn4linux.de>
   8  *              by Karsten Keil      <keil@isdn4linux.de>
   9  *
  10  * This software may be used and distributed according to the terms
  11  * of the GNU General Public License, incorporated herein by reference.
  12  *
  13  * For changes and modifications please read
  14  * Documentation/isdn/HiSax.cert
  15  *
  16  */
  17
  18 #include <linux/init.h>
  19 #include "hisax.h"
  20 #include "hfc_pci.h"
  21 #include "isdnl1.h"
  22 #include <linux/pci.h>
  23 #include <linux/interrupt.h>
  24
  25 extern const char *CardType[];
  26
  27 static const char *hfcpci_revision = "$Revision: 1.48.2.4 $";
  28
  29 /* table entry in the PCI devices list */
  30 typedef struct {
  31         int vendor_id;
  32         int device_id;
  33         char *vendor_name;
  34         char *card_name;
  35 } PCI_ENTRY;
  36
  37 #define NT_T1_COUNT     20      /* number of 3.125ms interrupts for G2 timeout */
  38 #define CLKDEL_TE       0x0e    /* CLKDEL in TE mode */
  39 #define CLKDEL_NT       0x6c    /* CLKDEL in NT mode */
  40
  41 static const PCI_ENTRY id_list[] =
  42 {
  43         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_2BD0, "CCD/Billion/Asuscom", "2BD0"},
  44         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B000, "Billion", "B000"},
  45         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B006, "Billion", "B006"},
  46         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B007, "Billion", "B007"},
  47         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B008, "Billion", "B008"},
  48         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B009, "Billion", "B009"},
  49         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00A, "Billion", "B00A"},
  50         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00B, "Billion", "B00B"},
  51         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00C, "Billion", "B00C"},
  52         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B100, "Seyeon", "B100"},
  53         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B700, "Primux II S0", "B700"},
  54         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B701, "Primux II S0 NT", "B701"},
  55         {PCI_VENDOR_ID_ABOCOM, PCI_DEVICE_ID_ABOCOM_2BD1, "Abocom/Magitek", "2BD1"},
  56         {PCI_VENDOR_ID_ASUSTEK, PCI_DEVICE_ID_ASUSTEK_0675, "Asuscom/Askey", "675"},
  57         {PCI_VENDOR_ID_BERKOM, PCI_DEVICE_ID_BERKOM_T_CONCEPT, "German telekom", "T-Concept"},
  58         {PCI_VENDOR_ID_BERKOM, PCI_DEVICE_ID_BERKOM_A1T, "German telekom", "A1T"},
  59         {PCI_VENDOR_ID_ANIGMA, PCI_DEVICE_ID_ANIGMA_MC145575, "Motorola MC145575", "MC145575"},
  60         {PCI_VENDOR_ID_ZOLTRIX, PCI_DEVICE_ID_ZOLTRIX_2BD0, "Zoltrix", "2BD0"},
  61         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_IOM2_E,"Digi International", "Digi DataFire Micro V IOM2 (Europe)"},
  62         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_E,"Digi International", "Digi DataFire Micro V (Europe)"},
  63         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_IOM2_A,"Digi International", "Digi DataFire Micro V IOM2 (North America)"},
  64         {PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_DF_M_A,"Digi International", "Digi DataFire Micro V (North America)"},
  65         {PCI_VENDOR_ID_SITECOM, PCI_DEVICE_ID_SITECOM_DC105V2, "Sitecom Europe", "DC-105 ISDN PCI"},
  66         {0, 0, NULL, NULL},
  67 };
  68
  69
  70 #ifdef CONFIG_PCI
  71
  72 /******************************************/
  73 /* free hardware resources used by driver */
  74 /******************************************/
  75 static void
  76 release_io_hfcpci(struct IsdnCardState *cs)
  77 {
  78         printk(KERN_INFO "HiSax: release hfcpci at %p\n",
  79                 cs->hw.hfcpci.pci_io);
  80         cs->hw.hfcpci.int_m2 = 0;                                       /* interrupt output off ! */
  81         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  82         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);                       /* Reset On */
  83         mdelay(10);
  84         Write_hfc(cs, HFCPCI_CIRM, 0);                                  /* Reset Off */
  85         mdelay(10);
  86         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  87         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, 0);       /* disable memory mapped ports + busmaster */
  88         del_timer(&cs->hw.hfcpci.timer);
  89         kfree(cs->hw.hfcpci.share_start);
  90         cs->hw.hfcpci.share_start = NULL;
  91         iounmap((void *)cs->hw.hfcpci.pci_io);
  92 }
  93
  94 /********************************************************************************/
  95 /* function called to reset the HFC PCI chip. A complete software reset of chip */
  96 /* and fifos is done.                                                           */
  97 /********************************************************************************/
  98 static void
  99 reset_hfcpci(struct IsdnCardState *cs)
 100 {
 101         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
 102         cs->hw.hfcpci.int_m2 = 0;       /* interrupt output off ! */
 103         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 104
 105         printk(KERN_INFO "HFC_PCI: resetting card\n");
 106         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO + PCI_ENA_MASTER);  /* enable memory ports + busmaster */
 107         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);       /* Reset On */
 108         mdelay(10);
 109         Write_hfc(cs, HFCPCI_CIRM, 0);  /* Reset Off */
 110         mdelay(10);
 111         if (Read_hfc(cs, HFCPCI_STATUS) & 2)
 112                 printk(KERN_WARNING "HFC-PCI init bit busy\n");
 113
 114         cs->hw.hfcpci.fifo_en = 0x30;   /* only D fifos enabled */
 115         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 116
 117         cs->hw.hfcpci.trm = 0 + HFCPCI_BTRANS_THRESMASK;        /* no echo connect , threshold */
 118         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 119
 120         Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_TE); /* ST-Bit delay for TE-Mode */
 121         cs->hw.hfcpci.sctrl_e = HFCPCI_AUTO_AWAKE;
 122         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);   /* S/T Auto awake */
 123         cs->hw.hfcpci.bswapped = 0;     /* no exchange */
 124         cs->hw.hfcpci.nt_mode = 0;      /* we are in TE mode */
 125         cs->hw.hfcpci.ctmt = HFCPCI_TIM3_125 | HFCPCI_AUTO_TIMER;
 126         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 127
 128         cs->hw.hfcpci.int_m1 = HFCPCI_INTS_DTRANS | HFCPCI_INTS_DREC |
 129             HFCPCI_INTS_L1STATE | HFCPCI_INTS_TIMER;
 130         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 131
 132         /* Clear already pending ints */
 133         if (Read_hfc(cs, HFCPCI_INT_S1));
 134
 135         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 2);    /* HFC ST 2 */
 136         udelay(10);
 137         Write_hfc(cs, HFCPCI_STATES, 2);        /* HFC ST 2 */
 138         cs->hw.hfcpci.mst_m = HFCPCI_MASTER;    /* HFC Master Mode */
 139
 140         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
 141         cs->hw.hfcpci.sctrl = 0x40;     /* set tx_lo mode, error in datasheet ! */
 142         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 143         cs->hw.hfcpci.sctrl_r = 0;
 144         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 145
 146         /* Init GCI/IOM2 in master mode */
 147         /* Slots 0 and 1 are set for B-chan 1 and 2 */
 148         /* D- and monitor/CI channel are not enabled */
 149         /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */
 150         /* STIO2 is used as data input, B1+B2 from IOM->ST */
 151         /* ST B-channel send disabled -> continous 1s */
 152         /* The IOM slots are always enabled */
 153         cs->hw.hfcpci.conn = 0x36;      /* set data flow directions */
 154         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 155         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* B1-Slot 0 STIO1 out enabled */
 156         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* B2-Slot 1 STIO1 out enabled */
 157         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* B1-Slot 0 STIO2 in enabled */
 158         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* B2-Slot 1 STIO2 in enabled */
 159
 160         /* Finally enable IRQ output */
 161         cs->hw.hfcpci.int_m2 = HFCPCI_IRQ_ENABLE;
 162         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 163         if (Read_hfc(cs, HFCPCI_INT_S1));
 164 }
 165
 166 /***************************************************/
 167 /* Timer function called when kernel timer expires */
 168 /***************************************************/
 169 static void
 170 hfcpci_Timer(struct IsdnCardState *cs)
 171 {
 172         cs->hw.hfcpci.timer.expires = jiffies + 75;
 173         /* WD RESET */
 174 /*      WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcpci.ctmt | 0x80);
 175    add_timer(&cs->hw.hfcpci.timer);
 176  */
 177 }
 178
 179
 180 /*********************************/
 181 /* schedule a new D-channel task */
 182 /*********************************/
 183 static void
 184 sched_event_D_pci(struct IsdnCardState *cs, int event)
 185 {
 186         test_and_set_bit(event, &cs->event);
 187         schedule_work(&cs->tqueue);
 188 }
 189
 190 /*********************************/
 191 /* schedule a new b_channel task */
 192 /*********************************/
 193 static void
 194 hfcpci_sched_event(struct BCState *bcs, int event)
 195 {
 196         test_and_set_bit(event, &bcs->event);
 197         schedule_work(&bcs->tqueue);
 198 }
 199
 200 /************************************************/
 201 /* select a b-channel entry matching and active */
 202 /************************************************/
 203 static
 204 struct BCState *
 205 Sel_BCS(struct IsdnCardState *cs, int channel)
 206 {
 207         if (cs->bcs[0].mode && (cs->bcs[0].channel == channel))
 208                 return (&cs->bcs[0]);
 209         else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel))
 210                 return (&cs->bcs[1]);
 211         else
 212                 return (NULL);
 213 }
 214
 215 /***************************************/
 216 /* clear the desired B-channel rx fifo */
 217 /***************************************/
 218 static void hfcpci_clear_fifo_rx(struct IsdnCardState *cs, int fifo)
 219 {       u_char fifo_state;
 220         bzfifo_type *bzr;
 221
 222         if (fifo) {
 223                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 224                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2RX;
 225         } else {
 226                 bzr = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 227                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1RX;
 228         }
 229         if (fifo_state)
 230                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 231         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 232         cs->hw.hfcpci.last_bfifo_cnt[fifo] = 0;
 233         bzr->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 234         bzr->za[MAX_B_FRAMES].z2 = bzr->za[MAX_B_FRAMES].z1;
 235         bzr->f1 = MAX_B_FRAMES;
 236         bzr->f2 = bzr->f1;      /* init F pointers to remain constant */
 237         if (fifo_state)
 238                 cs->hw.hfcpci.fifo_en |= fifo_state;
 239         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 240 }
 241
 242 /***************************************/
 243 /* clear the desired B-channel tx fifo */
 244 /***************************************/
 245 static void hfcpci_clear_fifo_tx(struct IsdnCardState *cs, int fifo)
 246 {       u_char fifo_state;
 247         bzfifo_type *bzt;
 248
 249         if (fifo) {
 250                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 251                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B2TX;
 252         } else {
 253                 bzt = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 254                 fifo_state = cs->hw.hfcpci.fifo_en & HFCPCI_FIFOEN_B1TX;
 255         }
 256         if (fifo_state)
 257                 cs->hw.hfcpci.fifo_en ^= fifo_state;
 258         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 259         bzt->za[MAX_B_FRAMES].z1 = B_FIFO_SIZE + B_SUB_VAL - 1;
 260         bzt->za[MAX_B_FRAMES].z2 = bzt->za[MAX_B_FRAMES].z1;
 261         bzt->f1 = MAX_B_FRAMES;
 262         bzt->f2 = bzt->f1;      /* init F pointers to remain constant */
 263         if (fifo_state)
 264                 cs->hw.hfcpci.fifo_en |= fifo_state;
 265         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 266 }
 267
 268 /*********************************************/
 269 /* read a complete B-frame out of the buffer */
 270 /*********************************************/
 271 static struct sk_buff
 272 *
 273 hfcpci_empty_fifo(struct BCState *bcs, bzfifo_type * bz, u_char * bdata, int count)
 274 {
 275         u_char *ptr, *ptr1, new_f2;
 276         struct sk_buff *skb;
 277         struct IsdnCardState *cs = bcs->cs;
 278         int total, maxlen, new_z2;
 279         z_type *zp;
 280
 281         if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
 282                 debugl1(cs, "hfcpci_empty_fifo");
 283         zp = &bz->za[bz->f2];   /* point to Z-Regs */
 284         new_z2 = zp->z2 + count;        /* new position in fifo */
 285         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 286                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 287         new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 288         if ((count > HSCX_BUFMAX + 3) || (count < 4) ||
 289             (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 290                 if (cs->debug & L1_DEB_WARN)
 291                         debugl1(cs, "hfcpci_empty_fifo: incoming packet invalid length %d or crc", count);
 292 #ifdef ERROR_STATISTIC
 293                 bcs->err_inv++;
 294 #endif
 295                 bz->za[new_f2].z2 = new_z2;
 296                 bz->f2 = new_f2;        /* next buffer */
 297                 skb = NULL;
 298         } else if (!(skb = dev_alloc_skb(count - 3)))
 299                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 300         else {
 301                 total = count;
 302                 count -= 3;
 303                 ptr = skb_put(skb, count);
 304
 305                 if (zp->z2 + count <= B_FIFO_SIZE + B_SUB_VAL)
 306                         maxlen = count;         /* complete transfer */
 307                 else
 308                         maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 309
 310                 ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 311                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 312                 count -= maxlen;
 313
 314                 if (count) {    /* rest remaining */
 315                         ptr += maxlen;
 316                         ptr1 = bdata;   /* start of buffer */
 317                         memcpy(ptr, ptr1, count);       /* rest */
 318                 }
 319                 bz->za[new_f2].z2 = new_z2;
 320                 bz->f2 = new_f2;        /* next buffer */
 321
 322         }
 323         return (skb);
 324 }
 325
 326 /*******************************/
 327 /* D-channel receive procedure */
 328 /*******************************/
 329 static
 330 int
 331 receive_dmsg(struct IsdnCardState *cs)
 332 {
 333         struct sk_buff *skb;
 334         int maxlen;
 335         int rcnt, total;
 336         int count = 5;
 337         u_char *ptr, *ptr1;
 338         dfifo_type *df;
 339         z_type *zp;
 340
 341         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_rx;
 342         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 343                 debugl1(cs, "rec_dmsg blocked");
 344                 return (1);
 345         }
 346         while (((df->f1 & D_FREG_MASK) != (df->f2 & D_FREG_MASK)) && count--) {
 347                 zp = &df->za[df->f2 & D_FREG_MASK];
 348                 rcnt = zp->z1 - zp->z2;
 349                 if (rcnt < 0)
 350                         rcnt += D_FIFO_SIZE;
 351                 rcnt++;
 352                 if (cs->debug & L1_DEB_ISAC)
 353                         debugl1(cs, "hfcpci recd f1(%d) f2(%d) z1(%x) z2(%x) cnt(%d)",
 354                                 df->f1, df->f2, zp->z1, zp->z2, rcnt);
 355
 356                 if ((rcnt > MAX_DFRAME_LEN + 3) || (rcnt < 4) ||
 357                     (df->data[zp->z1])) {
 358                         if (cs->debug & L1_DEB_WARN)
 359                                 debugl1(cs, "empty_fifo hfcpci paket inv. len %d or crc %d", rcnt, df->data[zp->z1]);
 360 #ifdef ERROR_STATISTIC
 361                         cs->err_rx++;
 362 #endif
 363                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 364                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + rcnt) & (D_FIFO_SIZE - 1);
 365                 } else if ((skb = dev_alloc_skb(rcnt - 3))) {
 366                         total = rcnt;
 367                         rcnt -= 3;
 368                         ptr = skb_put(skb, rcnt);
 369
 370                         if (zp->z2 + rcnt <= D_FIFO_SIZE)
 371                                 maxlen = rcnt;  /* complete transfer */
 372                         else
 373                                 maxlen = D_FIFO_SIZE - zp->z2;  /* maximum */
 374
 375                         ptr1 = df->data + zp->z2;       /* start of data */
 376                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 377                         rcnt -= maxlen;
 378
 379                         if (rcnt) {     /* rest remaining */
 380                                 ptr += maxlen;
 381                                 ptr1 = df->data;        /* start of buffer */
 382                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 383                         }
 384                         df->f2 = ((df->f2 + 1) & MAX_D_FRAMES) | (MAX_D_FRAMES + 1);    /* next buffer */
 385                         df->za[df->f2 & D_FREG_MASK].z2 = (zp->z2 + total) & (D_FIFO_SIZE - 1);
 386
 387                         skb_queue_tail(&cs->rq, skb);
 388                         sched_event_D_pci(cs, D_RCVBUFREADY);
 389                 } else
 390                         printk(KERN_WARNING "HFC-PCI: D receive out of memory\n");
 391         }
 392         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 393         return (1);
 394 }
 395
 396 /*******************************************************************************/
 397 /* check for transparent receive data and read max one threshold size if avail */
 398 /*******************************************************************************/
 399 static int
 400 hfcpci_empty_fifo_trans(struct BCState *bcs, bzfifo_type * bz, u_char * bdata)
 401 {
 402         unsigned short *z1r, *z2r;
 403         int new_z2, fcnt, maxlen;
 404         struct sk_buff *skb;
 405         u_char *ptr, *ptr1;
 406
 407         z1r = &bz->za[MAX_B_FRAMES].z1;         /* pointer to z reg */
 408         z2r = z1r + 1;
 409
 410         if (!(fcnt = *z1r - *z2r))
 411                 return (0);     /* no data avail */
 412
 413         if (fcnt <= 0)
 414                 fcnt += B_FIFO_SIZE;    /* bytes actually buffered */
 415         if (fcnt > HFCPCI_BTRANS_THRESHOLD)
 416                 fcnt = HFCPCI_BTRANS_THRESHOLD;         /* limit size */
 417
 418         new_z2 = *z2r + fcnt;   /* new position in fifo */
 419         if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 420                 new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 421
 422         if (!(skb = dev_alloc_skb(fcnt)))
 423                 printk(KERN_WARNING "HFCPCI: receive out of memory\n");
 424         else {
 425                 ptr = skb_put(skb, fcnt);
 426                 if (*z2r + fcnt <= B_FIFO_SIZE + B_SUB_VAL)
 427                         maxlen = fcnt;  /* complete transfer */
 428                 else
 429                         maxlen = B_FIFO_SIZE + B_SUB_VAL - *z2r;        /* maximum */
 430
 431                 ptr1 = bdata + (*z2r - B_SUB_VAL);      /* start of data */
 432                 memcpy(ptr, ptr1, maxlen);      /* copy data */
 433                 fcnt -= maxlen;
 434
 435                 if (fcnt) {     /* rest remaining */
 436                         ptr += maxlen;
 437                         ptr1 = bdata;   /* start of buffer */
 438                         memcpy(ptr, ptr1, fcnt);        /* rest */
 439                 }
 440                 skb_queue_tail(&bcs->rqueue, skb);
 441                 hfcpci_sched_event(bcs, B_RCVBUFREADY);
 442         }
 443
 444         *z2r = new_z2;          /* new position */
 445         return (1);
 446 }                               /* hfcpci_empty_fifo_trans */
 447
 448 /**********************************/
 449 /* B-channel main receive routine */
 450 /**********************************/
 451 static void
 452 main_rec_hfcpci(struct BCState *bcs)
 453 {
 454         struct IsdnCardState *cs = bcs->cs;
 455         int rcnt, real_fifo;
 456         int receive, count = 5;
 457         struct sk_buff *skb;
 458         bzfifo_type *bz;
 459         u_char *bdata;
 460         z_type *zp;
 461
 462
 463         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 464                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 465                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 466                 real_fifo = 1;
 467         } else {
 468                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b1;
 469                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b1;
 470                 real_fifo = 0;
 471         }
 472       Begin:
 473         count--;
 474         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 475                 debugl1(cs, "rec_data %d blocked", bcs->channel);
 476                 return;
 477         }
 478         if (bz->f1 != bz->f2) {
 479                 if (cs->debug & L1_DEB_HSCX)
 480                         debugl1(cs, "hfcpci rec %d f1(%d) f2(%d)",
 481                                 bcs->channel, bz->f1, bz->f2);
 482                 zp = &bz->za[bz->f2];
 483
 484                 rcnt = zp->z1 - zp->z2;
 485                 if (rcnt < 0)
 486                         rcnt += B_FIFO_SIZE;
 487                 rcnt++;
 488                 if (cs->debug & L1_DEB_HSCX)
 489                         debugl1(cs, "hfcpci rec %d z1(%x) z2(%x) cnt(%d)",
 490                                 bcs->channel, zp->z1, zp->z2, rcnt);
 491                 if ((skb = hfcpci_empty_fifo(bcs, bz, bdata, rcnt))) {
 492                         skb_queue_tail(&bcs->rqueue, skb);
 493                         hfcpci_sched_event(bcs, B_RCVBUFREADY);
 494                 }
 495                 rcnt = bz->f1 - bz->f2;
 496                 if (rcnt < 0)
 497                         rcnt += MAX_B_FRAMES + 1;
 498                 if (cs->hw.hfcpci.last_bfifo_cnt[real_fifo] > rcnt + 1) {
 499                         rcnt = 0;
 500                         hfcpci_clear_fifo_rx(cs, real_fifo);
 501                 }
 502                 cs->hw.hfcpci.last_bfifo_cnt[real_fifo] = rcnt;
 503                 if (rcnt > 1)
 504                         receive = 1;
 505                 else
 506                         receive = 0;
 507         } else if (bcs->mode == L1_MODE_TRANS)
 508                 receive = hfcpci_empty_fifo_trans(bcs, bz, bdata);
 509         else
 510                 receive = 0;
 511         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 512         if (count && receive)
 513                 goto Begin;
 514         return;
 515 }
 516
 517 /**************************/
 518 /* D-channel send routine */
 519 /**************************/
 520 static void
 521 hfcpci_fill_dfifo(struct IsdnCardState *cs)
 522 {
 523         int fcnt;
 524         int count, new_z1, maxlen;
 525         dfifo_type *df;
 526         u_char *src, *dst, new_f1;
 527
 528         if (!cs->tx_skb)
 529                 return;
 530         if (cs->tx_skb->len <= 0)
 531                 return;
 532
 533         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_tx;
 534
 535         if (cs->debug & L1_DEB_ISAC)
 536                 debugl1(cs, "hfcpci_fill_Dfifo f1(%d) f2(%d) z1(f1)(%x)",
 537                         df->f1, df->f2,
 538                         df->za[df->f1 & D_FREG_MASK].z1);
 539         fcnt = df->f1 - df->f2; /* frame count actually buffered */
 540         if (fcnt < 0)
 541                 fcnt += (MAX_D_FRAMES + 1);     /* if wrap around */
 542         if (fcnt > (MAX_D_FRAMES - 1)) {
 543                 if (cs->debug & L1_DEB_ISAC)
 544                         debugl1(cs, "hfcpci_fill_Dfifo more as 14 frames");
 545 #ifdef ERROR_STATISTIC
 546                 cs->err_tx++;
 547 #endif
 548                 return;
 549         }
 550         /* now determine free bytes in FIFO buffer */
 551         count = df->za[df->f2 & D_FREG_MASK].z2 - df->za[df->f1 & D_FREG_MASK].z1 - 1;
 552         if (count <= 0)
 553                 count += D_FIFO_SIZE;   /* count now contains available bytes */
 554
 555         if (cs->debug & L1_DEB_ISAC)
 556                 debugl1(cs, "hfcpci_fill_Dfifo count(%ld/%d)",
 557                         cs->tx_skb->len, count);
 558         if (count < cs->tx_skb->len) {
 559                 if (cs->debug & L1_DEB_ISAC)
 560                         debugl1(cs, "hfcpci_fill_Dfifo no fifo mem");
 561                 return;
 562         }
 563         count = cs->tx_skb->len;        /* get frame len */
 564         new_z1 = (df->za[df->f1 & D_FREG_MASK].z1 + count) & (D_FIFO_SIZE - 1);
 565         new_f1 = ((df->f1 + 1) & D_FREG_MASK) | (D_FREG_MASK + 1);
 566         src = cs->tx_skb->data; /* source pointer */
 567         dst = df->data + df->za[df->f1 & D_FREG_MASK].z1;
 568         maxlen = D_FIFO_SIZE - df->za[df->f1 & D_FREG_MASK].z1;         /* end fifo */
 569         if (maxlen > count)
 570                 maxlen = count; /* limit size */
 571         memcpy(dst, src, maxlen);       /* first copy */
 572
 573         count -= maxlen;        /* remaining bytes */
 574         if (count) {
 575                 dst = df->data; /* start of buffer */
 576                 src += maxlen;  /* new position */
 577                 memcpy(dst, src, count);
 578         }
 579         df->za[new_f1 & D_FREG_MASK].z1 = new_z1;       /* for next buffer */
 580         df->za[df->f1 & D_FREG_MASK].z1 = new_z1;       /* new pos actual buffer */
 581         df->f1 = new_f1;        /* next frame */
 582
 583         dev_kfree_skb_any(cs->tx_skb);
 584         cs->tx_skb = NULL;
 585         return;
 586 }
 587
 588 /**************************/
 589 /* B-channel send routine */
 590 /**************************/
 591 static void
 592 hfcpci_fill_fifo(struct BCState *bcs)
 593 {
 594         struct IsdnCardState *cs = bcs->cs;
 595         int maxlen, fcnt;
 596         int count, new_z1;
 597         bzfifo_type *bz;
 598         u_char *bdata;
 599         u_char new_f1, *src, *dst;
 600         unsigned short *z1t, *z2t;
 601
 602         if (!bcs->tx_skb)
 603                 return;
 604         if (bcs->tx_skb->len <= 0)
 605                 return;
 606
 607         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 608                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 609                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b2;
 610         } else {
 611                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 612                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b1;
 613         }
 614
 615         if (bcs->mode == L1_MODE_TRANS) {
 616                 z1t = &bz->za[MAX_B_FRAMES].z1;
 617                 z2t = z1t + 1;
 618                 if (cs->debug & L1_DEB_HSCX)
 619                         debugl1(cs, "hfcpci_fill_fifo_trans %d z1(%x) z2(%x)",
 620                                 bcs->channel, *z1t, *z2t);
 621                 fcnt = *z2t - *z1t;
 622                 if (fcnt <= 0)
 623                         fcnt += B_FIFO_SIZE;    /* fcnt contains available bytes in fifo */
 624                 fcnt = B_FIFO_SIZE - fcnt;      /* remaining bytes to send */
 625
 626                 while ((fcnt < 2 * HFCPCI_BTRANS_THRESHOLD) && (bcs->tx_skb)) {
 627                         if (bcs->tx_skb->len < B_FIFO_SIZE - fcnt) {
 628                                 /* data is suitable for fifo */
 629                                 count = bcs->tx_skb->len;
 630
 631                                 new_z1 = *z1t + count;  /* new buffer Position */
 632                                 if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 633                                         new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 634                                 src = bcs->tx_skb->data;        /* source pointer */
 635                                 dst = bdata + (*z1t - B_SUB_VAL);
 636                                 maxlen = (B_FIFO_SIZE + B_SUB_VAL) - *z1t;      /* end of fifo */
 637                                 if (maxlen > count)
 638                                         maxlen = count;         /* limit size */
 639                                 memcpy(dst, src, maxlen);       /* first copy */
 640
 641                                 count -= maxlen;        /* remaining bytes */
 642                                 if (count) {
 643                                         dst = bdata;    /* start of buffer */
 644                                         src += maxlen;  /* new position */
 645                                         memcpy(dst, src, count);
 646                                 }
 647                                 bcs->tx_cnt -= bcs->tx_skb->len;
 648                                 fcnt += bcs->tx_skb->len;
 649                                 *z1t = new_z1;  /* now send data */
 650                         } else if (cs->debug & L1_DEB_HSCX)
 651                                 debugl1(cs, "hfcpci_fill_fifo_trans %d frame length %d discarded",
 652                                         bcs->channel, bcs->tx_skb->len);
 653
 654                         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 655                                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 656                                 u_long  flags;
 657                                 spin_lock_irqsave(&bcs->aclock, flags);
 658                                 bcs->ackcnt += bcs->tx_skb->len;
 659                                 spin_unlock_irqrestore(&bcs->aclock, flags);
 660                                 schedule_event(bcs, B_ACKPENDING);
 661                         }
 662
 663                         dev_kfree_skb_any(bcs->tx_skb);
 664                         bcs->tx_skb = skb_dequeue(&bcs->squeue);        /* fetch next data */
 665                 }
 666                 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 667                 return;
 668         }
 669         if (cs->debug & L1_DEB_HSCX)
 670                 debugl1(cs, "hfcpci_fill_fifo_hdlc %d f1(%d) f2(%d) z1(f1)(%x)",
 671                         bcs->channel, bz->f1, bz->f2,
 672                         bz->za[bz->f1].z1);
 673
 674         fcnt = bz->f1 - bz->f2; /* frame count actually buffered */
 675         if (fcnt < 0)
 676                 fcnt += (MAX_B_FRAMES + 1);     /* if wrap around */
 677         if (fcnt > (MAX_B_FRAMES - 1)) {
 678                 if (cs->debug & L1_DEB_HSCX)
 679                         debugl1(cs, "hfcpci_fill_Bfifo more as 14 frames");
 680                 return;
 681         }
 682         /* now determine free bytes in FIFO buffer */
 683         count = bz->za[bz->f2].z2 - bz->za[bz->f1].z1 - 1;
 684         if (count <= 0)
 685                 count += B_FIFO_SIZE;   /* count now contains available bytes */
 686
 687         if (cs->debug & L1_DEB_HSCX)
 688                 debugl1(cs, "hfcpci_fill_fifo %d count(%ld/%d),%lx",
 689                         bcs->channel, bcs->tx_skb->len,
 690                         count, current->state);
 691
 692         if (count < bcs->tx_skb->len) {
 693                 if (cs->debug & L1_DEB_HSCX)
 694                         debugl1(cs, "hfcpci_fill_fifo no fifo mem");
 695                 return;
 696         }
 697         count = bcs->tx_skb->len;       /* get frame len */
 698         new_z1 = bz->za[bz->f1].z1 + count;     /* new buffer Position */
 699         if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 700                 new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 701
 702         new_f1 = ((bz->f1 + 1) & MAX_B_FRAMES);
 703         src = bcs->tx_skb->data;        /* source pointer */
 704         dst = bdata + (bz->za[bz->f1].z1 - B_SUB_VAL);
 705         maxlen = (B_FIFO_SIZE + B_SUB_VAL) - bz->za[bz->f1].z1;         /* end fifo */
 706         if (maxlen > count)
 707                 maxlen = count; /* limit size */
 708         memcpy(dst, src, maxlen);       /* first copy */
 709
 710         count -= maxlen;        /* remaining bytes */
 711         if (count) {
 712                 dst = bdata;    /* start of buffer */
 713                 src += maxlen;  /* new position */
 714                 memcpy(dst, src, count);
 715         }
 716         bcs->tx_cnt -= bcs->tx_skb->len;
 717         if (test_bit(FLG_LLI_L1WAKEUP,&bcs->st->lli.flag) &&
 718                 (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 719                 u_long  flags;
 720                 spin_lock_irqsave(&bcs->aclock, flags);
 721                 bcs->ackcnt += bcs->tx_skb->len;
 722                 spin_unlock_irqrestore(&bcs->aclock, flags);
 723                 schedule_event(bcs, B_ACKPENDING);
 724         }
 725
 726         bz->za[new_f1].z1 = new_z1;     /* for next buffer */
 727         bz->f1 = new_f1;        /* next frame */
 728
 729         dev_kfree_skb_any(bcs->tx_skb);
 730         bcs->tx_skb = NULL;
 731         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 732         return;
 733 }
 734
 735 /**********************************************/
 736 /* D-channel l1 state call for leased NT-mode */
 737 /**********************************************/
 738 static void
 739 dch_nt_l2l1(struct PStack *st, int pr, void *arg)
 740 {
 741         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
 742
 743         switch (pr) {
 744                 case (PH_DATA | REQUEST):
 745                 case (PH_PULL | REQUEST):
 746                 case (PH_PULL | INDICATION):
 747                         st->l1.l1hw(st, pr, arg);
 748                         break;
 749                 case (PH_ACTIVATE | REQUEST):
 750                         st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
 751                         break;
 752                 case (PH_TESTLOOP | REQUEST):
 753                         if (1 & (long) arg)
 754                                 debugl1(cs, "PH_TEST_LOOP B1");
 755                         if (2 & (long) arg)
 756                                 debugl1(cs, "PH_TEST_LOOP B2");
 757                         if (!(3 & (long) arg))
 758                                 debugl1(cs, "PH_TEST_LOOP DISABLED");
 759                         st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
 760                         break;
 761                 default:
 762                         if (cs->debug)
 763                                 debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr);
 764                         break;
 765         }
 766 }
 767
 768
 769
 770 /***********************/
 771 /* set/reset echo mode */
 772 /***********************/
 773 static int
 774 hfcpci_auxcmd(struct IsdnCardState *cs, isdn_ctrl * ic)
 775 {
 776         u_long  flags;
 777         int     i = *(unsigned int *) ic->parm.num;
 778
 779         if ((ic->arg == 98) &&
 780             (!(cs->hw.hfcpci.int_m1 & (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC + HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC)))) {
 781                 spin_lock_irqsave(&cs->lock, flags);
 782                 Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_NT); /* ST-Bit delay for NT-Mode */
 783                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 0);    /* HFC ST G0 */
 784                 udelay(10);
 785                 cs->hw.hfcpci.sctrl |= SCTRL_MODE_NT;
 786                 Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);       /* set NT-mode */
 787                 udelay(10);
 788                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 1);    /* HFC ST G1 */
 789                 udelay(10);
 790                 Write_hfc(cs, HFCPCI_STATES, 1 | HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
 791                 cs->dc.hfcpci.ph_state = 1;
 792                 cs->hw.hfcpci.nt_mode = 1;
 793                 cs->hw.hfcpci.nt_timer = 0;
 794                 cs->stlist->l2.l2l1 = dch_nt_l2l1;
 795                 spin_unlock_irqrestore(&cs->lock, flags);
 796                 debugl1(cs, "NT mode activated");
 797                 return (0);
 798         }
 799         if ((cs->chanlimit > 1) || (cs->hw.hfcpci.bswapped) ||
 800             (cs->hw.hfcpci.nt_mode) || (ic->arg != 12))
 801                 return (-EINVAL);
 802
 803         spin_lock_irqsave(&cs->lock, flags);
 804         if (i) {
 805                 cs->logecho = 1;
 806                 cs->hw.hfcpci.trm |= 0x20;      /* enable echo chan */
 807                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_B2REC;
 808                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2RX;
 809         } else {
 810                 cs->logecho = 0;
 811                 cs->hw.hfcpci.trm &= ~0x20;     /* disable echo chan */
 812                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_B2REC;
 813                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2RX;
 814         }
 815         cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
 816         cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
 817         cs->hw.hfcpci.conn |= 0x10;     /* B2-IOM -> B2-ST */
 818         cs->hw.hfcpci.ctmt &= ~2;
 819         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 820         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 821         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 822         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 823         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 824         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 825         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 826         spin_unlock_irqrestore(&cs->lock, flags);
 827         return (0);
 828 }                               /* hfcpci_auxcmd */
 829
 830 /*****************************/
 831 /* E-channel receive routine */
 832 /*****************************/
 833 static void
 834 receive_emsg(struct IsdnCardState *cs)
 835 {
 836         int rcnt;
 837         int receive, count = 5;
 838         bzfifo_type *bz;
 839         u_char *bdata;
 840         z_type *zp;
 841         u_char *ptr, *ptr1, new_f2;
 842         int total, maxlen, new_z2;
 843         u_char e_buffer[256];
 844
 845         bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 846         bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 847       Begin:
 848         count--;
 849         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 850                 debugl1(cs, "echo_rec_data blocked");
 851                 return;
 852         }
 853         if (bz->f1 != bz->f2) {
 854                 if (cs->debug & L1_DEB_ISAC)
 855                         debugl1(cs, "hfcpci e_rec f1(%d) f2(%d)",
 856                                 bz->f1, bz->f2);
 857                 zp = &bz->za[bz->f2];
 858
 859                 rcnt = zp->z1 - zp->z2;
 860                 if (rcnt < 0)
 861                         rcnt += B_FIFO_SIZE;
 862                 rcnt++;
 863                 if (cs->debug & L1_DEB_ISAC)
 864                         debugl1(cs, "hfcpci e_rec z1(%x) z2(%x) cnt(%d)",
 865                                 zp->z1, zp->z2, rcnt);
 866                 new_z2 = zp->z2 + rcnt;         /* new position in fifo */
 867                 if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 868                         new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 869                 new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 870                 if ((rcnt > 256 + 3) || (count < 4) ||
 871                     (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 872                         if (cs->debug & L1_DEB_WARN)
 873                                 debugl1(cs, "hfcpci_empty_echan: incoming packet invalid length %d or crc", rcnt);
 874                         bz->za[new_f2].z2 = new_z2;
 875                         bz->f2 = new_f2;        /* next buffer */
 876                 } else {
 877                         total = rcnt;
 878                         rcnt -= 3;
 879                         ptr = e_buffer;
 880
 881                         if (zp->z2 <= B_FIFO_SIZE + B_SUB_VAL)
 882                                 maxlen = rcnt;  /* complete transfer */
 883                         else
 884                                 maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 885
 886                         ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 887                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 888                         rcnt -= maxlen;
 889
 890                         if (rcnt) {     /* rest remaining */
 891                                 ptr += maxlen;
 892                                 ptr1 = bdata;   /* start of buffer */
 893                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 894                         }
 895                         bz->za[new_f2].z2 = new_z2;
 896                         bz->f2 = new_f2;        /* next buffer */
 897                         if (cs->debug & DEB_DLOG_HEX) {
 898                                 ptr = cs->dlog;
 899                                 if ((total - 3) < MAX_DLOG_SPACE / 3 - 10) {
 900                                         *ptr++ = 'E';
 901                                         *ptr++ = 'C';
 902                                         *ptr++ = 'H';
 903                                         *ptr++ = 'O';
 904                                         *ptr++ = ':';
 905                                         ptr += QuickHex(ptr, e_buffer, total - 3);
 906                                         ptr--;
 907                                         *ptr++ = '\n';
 908                                         *ptr = 0;
 909                                         HiSax_putstatus(cs, NULL, cs->dlog);
 910                                 } else
 911                                         HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", total - 3);
 912                         }
 913                 }
 914
 915                 rcnt = bz->f1 - bz->f2;
 916                 if (rcnt < 0)
 917                         rcnt += MAX_B_FRAMES + 1;
 918                 if (rcnt > 1)
 919                         receive = 1;
 920                 else
 921                         receive = 0;
 922         } else
 923                 receive = 0;
 924         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 925         if (count && receive)
 926                 goto Begin;
 927         return;
 928 }                               /* receive_emsg */
 929
 930 /*********************/
 931 /* Interrupt handler */
 932 /*********************/
 933 static irqreturn_t
 934 hfcpci_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 935 {
 936         u_long flags;
 937         struct IsdnCardState *cs = dev_id;
 938         u_char exval;
 939         struct BCState *bcs;
 940         int count = 15;
 941         u_char val, stat;
 942
 943         if (!(cs->hw.hfcpci.int_m2 & 0x08)) {
 944                 debugl1(cs, "HFC-PCI: int_m2 %x not initialised", cs->hw.hfcpci.int_m2);
 945                 return IRQ_NONE;        /* not initialised */
 946         }
 947         spin_lock_irqsave(&cs->lock, flags);
 948         if (HFCPCI_ANYINT & (stat = Read_hfc(cs, HFCPCI_STATUS))) {
 949                 val = Read_hfc(cs, HFCPCI_INT_S1);
 950                 if (cs->debug & L1_DEB_ISAC)
 951                         debugl1(cs, "HFC-PCI: stat(%02x) s1(%02x)", stat, val);
 952         } else {
 953                 spin_unlock_irqrestore(&cs->lock, flags);
 954                 return IRQ_NONE;
 955         }
 956         if (cs->debug & L1_DEB_ISAC)
 957                 debugl1(cs, "HFC-PCI irq %x %s", val,
 958                         test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
 959                         "locked" : "unlocked");
 960         val &= cs->hw.hfcpci.int_m1;
 961         if (val & 0x40) {       /* state machine irq */
 962                 exval = Read_hfc(cs, HFCPCI_STATES) & 0xf;
 963                 if (cs->debug & L1_DEB_ISAC)
 964                         debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcpci.ph_state,
 965                                 exval);
 966                 cs->dc.hfcpci.ph_state = exval;
 967                 sched_event_D_pci(cs, D_L1STATECHANGE);
 968                 val &= ~0x40;
 969         }
 970         if (val & 0x80) {       /* timer irq */
 971                 if (cs->hw.hfcpci.nt_mode) {
 972                         if ((--cs->hw.hfcpci.nt_timer) < 0)
 973                                 sched_event_D_pci(cs, D_L1STATECHANGE);
 974                 }
 975                 val &= ~0x80;
 976                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
 977         }
 978         while (val) {
 979                 if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 980                         cs->hw.hfcpci.int_s1 |= val;
 981                         spin_unlock_irqrestore(&cs->lock, flags);
 982                         return IRQ_HANDLED;
 983                 }
 984                 if (cs->hw.hfcpci.int_s1 & 0x18) {
 985                         exval = val;
 986                         val = cs->hw.hfcpci.int_s1;
 987                         cs->hw.hfcpci.int_s1 = exval;
 988                 }
 989                 if (val & 0x08) {
 990                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
 991                                 if (cs->debug)
 992                                         debugl1(cs, "hfcpci spurious 0x08 IRQ");
 993                         } else
 994                                 main_rec_hfcpci(bcs);
 995                 }
 996                 if (val & 0x10) {
 997                         if (cs->logecho)
 998                                 receive_emsg(cs);
 999                         else if (!(bcs = Sel_BCS(cs, 1))) {
1000                                 if (cs->debug)
1001                                         debugl1(cs, "hfcpci spurious 0x10 IRQ");
1002                         } else
1003                                 main_rec_hfcpci(bcs);
1004                 }
1005                 if (val & 0x01) {
1006                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
1007                                 if (cs->debug)
1008                                         debugl1(cs, "hfcpci spurious 0x01 IRQ");
1009                         } else {
1010                                 if (bcs->tx_skb) {
1011                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1012                                                 hfcpci_fill_fifo(bcs);
1013                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1014                                         } else
1015                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1016                                 } else {
1017                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1018                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1019                                                         hfcpci_fill_fifo(bcs);
1020                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1021                                                 } else
1022                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1023                                         } else {
1024                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1025                                         }
1026                                 }
1027                         }
1028                 }
1029                 if (val & 0x02) {
1030                         if (!(bcs = Sel_BCS(cs, 1))) {
1031                                 if (cs->debug)
1032                                         debugl1(cs, "hfcpci spurious 0x02 IRQ");
1033                         } else {
1034                                 if (bcs->tx_skb) {
1035                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1036                                                 hfcpci_fill_fifo(bcs);
1037                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1038                                         } else
1039                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1040                                 } else {
1041                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1042                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1043                                                         hfcpci_fill_fifo(bcs);
1044                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1045                                                 } else
1046                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1047                                         } else {
1048                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1049                                         }
1050                                 }
1051                         }
1052                 }
1053                 if (val & 0x20) {       /* receive dframe */
1054                         receive_dmsg(cs);
1055                 }
1056                 if (val & 0x04) {       /* dframe transmitted */
1057                         if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
1058                                 del_timer(&cs->dbusytimer);
1059                         if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
1060                                 sched_event_D_pci(cs, D_CLEARBUSY);
1061                         if (cs->tx_skb) {
1062                                 if (cs->tx_skb->len) {
1063                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1064                                                 hfcpci_fill_dfifo(cs);
1065                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1066                                         } else {
1067                                                 debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1068                                         }
1069                                         goto afterXPR;
1070                                 } else {
1071                                         dev_kfree_skb_irq(cs->tx_skb);
1072                                         cs->tx_cnt = 0;
1073                                         cs->tx_skb = NULL;
1074                                 }
1075                         }
1076                         if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
1077                                 cs->tx_cnt = 0;
1078                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1079                                         hfcpci_fill_dfifo(cs);
1080                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1081                                 } else {
1082                                         debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1083                                 }
1084                         } else
1085                                 sched_event_D_pci(cs, D_XMTBUFREADY);
1086                 }
1087               afterXPR:
1088                 if (cs->hw.hfcpci.int_s1 && count--) {
1089                         val = cs->hw.hfcpci.int_s1;
1090                         cs->hw.hfcpci.int_s1 = 0;
1091                         if (cs->debug & L1_DEB_ISAC)
1092                                 debugl1(cs, "HFC-PCI irq %x loop %d", val, 15 - count);
1093                 } else
1094                         val = 0;
1095         }
1096         spin_unlock_irqrestore(&cs->lock, flags);
1097         return IRQ_HANDLED;
1098 }
1099
1100 /********************************************************************/
1101 /* timer callback for D-chan busy resolution. Currently no function */
1102 /********************************************************************/
1103 static void
1104 hfcpci_dbusy_timer(struct IsdnCardState *cs)
1105 {
1106 }
1107
1108 /*************************************/
1109 /* Layer 1 D-channel hardware access */
1110 /*************************************/
1111 static void
1112 HFCPCI_l1hw(struct PStack *st, int pr, void *arg)
1113 {
1114         u_long flags;
1115         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
1116         struct sk_buff *skb = arg;
1117
1118         switch (pr) {
1119                 case (PH_DATA | REQUEST):
1120                         if (cs->debug & DEB_DLOG_HEX)
1121                                 LogFrame(cs, skb->data, skb->len);
1122                         if (cs->debug & DEB_DLOG_VERBOSE)
1123                                 dlogframe(cs, skb, 0);
1124                         spin_lock_irqsave(&cs->lock, flags);
1125                         if (cs->tx_skb) {
1126                                 skb_queue_tail(&cs->sq, skb);
1127 #ifdef L2FRAME_DEBUG            /* psa */
1128                                 if (cs->debug & L1_DEB_LAPD)
1129                                         Logl2Frame(cs, skb, "PH_DATA Queued", 0);
1130 #endif
1131                         } else {
1132                                 cs->tx_skb = skb;
1133                                 cs->tx_cnt = 0;
1134 #ifdef L2FRAME_DEBUG            /* psa */
1135                                 if (cs->debug & L1_DEB_LAPD)
1136                                         Logl2Frame(cs, skb, "PH_DATA", 0);
1137 #endif
1138                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1139                                         hfcpci_fill_dfifo(cs);
1140                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1141                                 } else
1142                                         debugl1(cs, "hfcpci_fill_dfifo blocked");
1143
1144                         }
1145                         spin_unlock_irqrestore(&cs->lock, flags);
1146                         break;
1147                 case (PH_PULL | INDICATION):
1148                         spin_lock_irqsave(&cs->lock, flags);
1149                         if (cs->tx_skb) {
1150                                 if (cs->debug & L1_DEB_WARN)
1151                                         debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
1152                                 skb_queue_tail(&cs->sq, skb);
1153                                 spin_unlock_irqrestore(&cs->lock, flags);
1154                                 break;
1155                         }
1156                         if (cs->debug & DEB_DLOG_HEX)
1157                                 LogFrame(cs, skb->data, skb->len);
1158                         if (cs->debug & DEB_DLOG_VERBOSE)
1159                                 dlogframe(cs, skb, 0);
1160                         cs->tx_skb = skb;
1161                         cs->tx_cnt = 0;
1162 #ifdef L2FRAME_DEBUG            /* psa */
1163                         if (cs->debug & L1_DEB_LAPD)
1164                                 Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
1165 #endif
1166                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1167                                 hfcpci_fill_dfifo(cs);
1168                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1169                         } else
1170                                 debugl1(cs, "hfcpci_fill_dfifo blocked");
1171                         spin_unlock_irqrestore(&cs->lock, flags);
1172                         break;
1173                 case (PH_PULL | REQUEST):
1174 #ifdef L2FRAME_DEBUG            /* psa */
1175                         if (cs->debug & L1_DEB_LAPD)
1176                                 debugl1(cs, "-> PH_REQUEST_PULL");
1177 #endif
1178                         if (!cs->tx_skb) {
1179                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1180                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1181                         } else
1182                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1183                         break;
1184                 case (HW_RESET | REQUEST):
1185                         spin_lock_irqsave(&cs->lock, flags);
1186                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 3);    /* HFC ST 3 */
1187                         udelay(6);
1188                         Write_hfc(cs, HFCPCI_STATES, 3);        /* HFC ST 2 */
1189                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1190                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1191                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
1192                         spin_unlock_irqrestore(&cs->lock, flags);
1193                         l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
1194                         break;
1195                 case (HW_ENABLE | REQUEST):
1196                         spin_lock_irqsave(&cs->lock, flags);
1197                         Write_hfc(cs, HFCPCI_STATES, HFCPCI_DO_ACTION);
1198                         spin_unlock_irqrestore(&cs->lock, flags);
1199                         break;
1200                 case (HW_DEACTIVATE | REQUEST):
1201                         spin_lock_irqsave(&cs->lock, flags);
1202                         cs->hw.hfcpci.mst_m &= ~HFCPCI_MASTER;
1203                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1204                         spin_unlock_irqrestore(&cs->lock, flags);
1205                         break;
1206                 case (HW_INFO3 | REQUEST):
1207                         spin_lock_irqsave(&cs->lock, flags);
1208                         cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1209                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1210                         spin_unlock_irqrestore(&cs->lock, flags);
1211                         break;
1212                 case (HW_TESTLOOP | REQUEST):
1213                         spin_lock_irqsave(&cs->lock, flags);
1214                         switch ((int) arg) {
1215                                 case (1):
1216                                         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* tx slot */
1217                                         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* rx slot */
1218                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~7) | 1;
1219                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1220                                         break;
1221
1222                                 case (2):
1223                                         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* tx slot */
1224                                         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* rx slot */
1225                                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~0x38) | 0x08;
1226                                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1227                                         break;
1228
1229                                 default:
1230                                         spin_unlock_irqrestore(&cs->lock, flags);
1231                                         if (cs->debug & L1_DEB_WARN)
1232                                                 debugl1(cs, "hfcpci_l1hw loop invalid %4x", (int) arg);
1233                                         return;
1234                         }
1235                         cs->hw.hfcpci.trm |= 0x80;      /* enable IOM-loop */
1236                         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
1237                         spin_unlock_irqrestore(&cs->lock, flags);
1238                         break;
1239                 default:
1240                         if (cs->debug & L1_DEB_WARN)
1241                                 debugl1(cs, "hfcpci_l1hw unknown pr %4x", pr);
1242                         break;
1243         }
1244 }
1245
1246 /***********************************************/
1247 /* called during init setting l1 stack pointer */
1248 /***********************************************/
1249 static void
1250 setstack_hfcpci(struct PStack *st, struct IsdnCardState *cs)
1251 {
1252         st->l1.l1hw = HFCPCI_l1hw;
1253 }
1254
1255 /**************************************/
1256 /* send B-channel data if not blocked */
1257 /**************************************/
1258 static void
1259 hfcpci_send_data(struct BCState *bcs)
1260 {
1261         struct IsdnCardState *cs = bcs->cs;
1262
1263         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1264                 hfcpci_fill_fifo(bcs);
1265                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1266         } else
1267                 debugl1(cs, "send_data %d blocked", bcs->channel);
1268 }
1269
1270 /***************************************************************/
1271 /* activate/deactivate hardware for selected channels and mode */
1272 /***************************************************************/
1273 static void
1274 mode_hfcpci(struct BCState *bcs, int mode, int bc)
1275 {
1276         struct IsdnCardState *cs = bcs->cs;
1277         int fifo2;
1278
1279         if (cs->debug & L1_DEB_HSCX)
1280                 debugl1(cs, "HFCPCI bchannel mode %d bchan %d/%d",
1281                         mode, bc, bcs->channel);
1282         bcs->mode = mode;
1283         bcs->channel = bc;
1284         fifo2 = bc;
1285         if (cs->chanlimit > 1) {
1286                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1287                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1288         } else {
1289                 if (bc) {
1290                         if (mode != L1_MODE_NULL) {
1291                                 cs->hw.hfcpci.bswapped = 1;     /* B1 and B2 exchanged */
1292                                 cs->hw.hfcpci.sctrl_e |= 0x80;
1293                         } else {
1294                                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1295                                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1296                         }
1297                         fifo2 = 0;
1298                 } else {
1299                         cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1300                         cs->hw.hfcpci.sctrl_e &= ~0x80;
1301                 }
1302         }
1303         switch (mode) {
1304                 case (L1_MODE_NULL):
1305                         if (bc) {
1306                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
1307                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
1308                         } else {
1309                                 cs->hw.hfcpci.sctrl &= ~SCTRL_B1_ENA;
1310                                 cs->hw.hfcpci.sctrl_r &= ~SCTRL_B1_ENA;
1311                         }
1312                         if (fifo2) {
1313                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1314                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1315                         } else {
1316                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1317                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1318                         }
1319                         break;
1320                 case (L1_MODE_TRANS):
1321                         hfcpci_clear_fifo_rx(cs, fifo2);
1322                         hfcpci_clear_fifo_tx(cs, fifo2);
1323                         if (bc) {
1324                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1325                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1326                         } else {
1327                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1328                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1329                         }
1330                         if (fifo2) {
1331                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1332                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1333                                 cs->hw.hfcpci.ctmt |= 2;
1334                                 cs->hw.hfcpci.conn &= ~0x18;
1335                         } else {
1336                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1337                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1338                                 cs->hw.hfcpci.ctmt |= 1;
1339                                 cs->hw.hfcpci.conn &= ~0x03;
1340                         }
1341                         break;
1342                 case (L1_MODE_HDLC):
1343                         hfcpci_clear_fifo_rx(cs, fifo2);
1344                         hfcpci_clear_fifo_tx(cs, fifo2);
1345                         if (bc) {
1346                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1347                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1348                         } else {
1349                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1350                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1351                         }
1352                         if (fifo2) {
1353                                 cs->hw.hfcpci.last_bfifo_cnt[1] = 0;
1354                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1355                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1356                                 cs->hw.hfcpci.ctmt &= ~2;
1357                                 cs->hw.hfcpci.conn &= ~0x18;
1358                         } else {
1359                                 cs->hw.hfcpci.last_bfifo_cnt[0] = 0;
1360                                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1361                                 cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1362                                 cs->hw.hfcpci.ctmt &= ~1;
1363                                 cs->hw.hfcpci.conn &= ~0x03;
1364                         }
1365                         break;
1366                 case (L1_MODE_EXTRN):
1367                         if (bc) {
1368                                 cs->hw.hfcpci.conn |= 0x10;
1369                                 cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1370                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1371                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1372                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1373                         } else {
1374                                 cs->hw.hfcpci.conn |= 0x02;
1375                                 cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1376                                 cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1377                                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1378                                 cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1379                         }
1380                         break;
1381         }
1382         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);
1383         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1384         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
1385         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
1386         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
1387         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
1388         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1389 }
1390
1391 /******************************/
1392 /* Layer2 -> Layer 1 Transfer */
1393 /******************************/
1394 static void
1395 hfcpci_l2l1(struct PStack *st, int pr, void *arg)
1396 {
1397         struct BCState  *bcs = st->l1.bcs;
1398         u_long          flags;
1399         struct sk_buff  *skb = arg;
1400
1401         switch (pr) {
1402                 case (PH_DATA | REQUEST):
1403                         spin_lock_irqsave(&bcs->cs->lock, flags);
1404                         if (bcs->tx_skb) {
1405                                 skb_queue_tail(&bcs->squeue, skb);
1406                         } else {
1407                                 bcs->tx_skb = skb;
1408 //                              test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1409                                 bcs->cs->BC_Send_Data(bcs);
1410                         }
1411                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1412                         break;
1413                 case (PH_PULL | INDICATION):
1414                         spin_lock_irqsave(&bcs->cs->lock, flags);
1415                         if (bcs->tx_skb) {
1416                                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1417                                 printk(KERN_WARNING "hfc_l2l1: this shouldn't happen\n");
1418                                 break;
1419                         }
1420 //                      test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1421                         bcs->tx_skb = skb;
1422                         bcs->cs->BC_Send_Data(bcs);
1423                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1424                         break;
1425                 case (PH_PULL | REQUEST):
1426                         if (!bcs->tx_skb) {
1427                                 test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1428                                 st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1429                         } else
1430                                 test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1431                         break;
1432                 case (PH_ACTIVATE | REQUEST):
1433                         spin_lock_irqsave(&bcs->cs->lock, flags);
1434                         test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
1435                         mode_hfcpci(bcs, st->l1.mode, st->l1.bc);
1436                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1437                         l1_msg_b(st, pr, arg);
1438                         break;
1439                 case (PH_DEACTIVATE | REQUEST):
1440                         l1_msg_b(st, pr, arg);
1441                         break;
1442                 case (PH_DEACTIVATE | CONFIRM):
1443                         spin_lock_irqsave(&bcs->cs->lock, flags);
1444                         test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
1445                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1446                         mode_hfcpci(bcs, 0, st->l1.bc);
1447                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1448                         st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
1449                         break;
1450         }
1451 }
1452
1453 /******************************************/
1454 /* deactivate B-channel access and queues */
1455 /******************************************/
1456 static void
1457 close_hfcpci(struct BCState *bcs)
1458 {
1459         mode_hfcpci(bcs, 0, bcs->channel);
1460         if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
1461                 skb_queue_purge(&bcs->rqueue);
1462                 skb_queue_purge(&bcs->squeue);
1463                 if (bcs->tx_skb) {
1464                         dev_kfree_skb_any(bcs->tx_skb);
1465                         bcs->tx_skb = NULL;
1466                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1467                 }
1468         }
1469 }
1470
1471 /*************************************/
1472 /* init B-channel queues and control */
1473 /*************************************/
1474 static int
1475 open_hfcpcistate(struct IsdnCardState *cs, struct BCState *bcs)
1476 {
1477         if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
1478                 skb_queue_head_init(&bcs->rqueue);
1479                 skb_queue_head_init(&bcs->squeue);
1480         }
1481         bcs->tx_skb = NULL;
1482         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1483         bcs->event = 0;
1484         bcs->tx_cnt = 0;
1485         return (0);
1486 }
1487
1488 /*********************************/
1489 /* inits the stack for B-channel */
1490 /*********************************/
1491 static int
1492 setstack_2b(struct PStack *st, struct BCState *bcs)
1493 {
1494         bcs->channel = st->l1.bc;
1495         if (open_hfcpcistate(st->l1.hardware, bcs))
1496                 return (-1);
1497         st->l1.bcs = bcs;
1498         st->l2.l2l1 = hfcpci_l2l1;
1499         setstack_manager(st);
1500         bcs->st = st;
1501         setstack_l1_B(st);
1502         return (0);
1503 }
1504
1505 /***************************/
1506 /* handle L1 state changes */
1507 /***************************/
1508 static void
1509 hfcpci_bh(struct IsdnCardState *cs)
1510 {
1511         u_long  flags;
1512 //      struct PStack *stptr;
1513
1514         if (!cs)
1515                 return;
1516         if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
1517                 if (!cs->hw.hfcpci.nt_mode)
1518                         switch (cs->dc.hfcpci.ph_state) {
1519                                 case (0):
1520                                         l1_msg(cs, HW_RESET | INDICATION, NULL);
1521                                         break;
1522                                 case (3):
1523                                         l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
1524                                         break;
1525                                 case (8):
1526                                         l1_msg(cs, HW_RSYNC | INDICATION, NULL);
1527                                         break;
1528                                 case (6):
1529                                         l1_msg(cs, HW_INFO2 | INDICATION, NULL);
1530                                         break;
1531                                 case (7):
1532                                         l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
1533                                         break;
1534                                 default:
1535                                         break;
1536                 } else {
1537                         spin_lock_irqsave(&cs->lock, flags);
1538                         switch (cs->dc.hfcpci.ph_state) {
1539                                 case (2):
1540                                         if (cs->hw.hfcpci.nt_timer < 0) {
1541                                                 cs->hw.hfcpci.nt_timer = 0;
1542                                                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1543                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1544                                                 /* Clear already pending ints */
1545                                                 if (Read_hfc(cs, HFCPCI_INT_S1));
1546                                                 Write_hfc(cs, HFCPCI_STATES, 4 | HFCPCI_LOAD_STATE);
1547                                                 udelay(10);
1548                                                 Write_hfc(cs, HFCPCI_STATES, 4);
1549                                                 cs->dc.hfcpci.ph_state = 4;
1550                                         } else {
1551                                                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_TIMER;
1552                                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1553                                                 cs->hw.hfcpci.ctmt &= ~HFCPCI_AUTO_TIMER;
1554                                                 cs->hw.hfcpci.ctmt |= HFCPCI_TIM3_125;
1555                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1556                                                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1557                                                 cs->hw.hfcpci.nt_timer = NT_T1_COUNT;
1558                                                 Write_hfc(cs, HFCPCI_STATES, 2 | HFCPCI_NT_G2_G3);      /* allow G2 -> G3 transition */
1559                                         }
1560                                         break;
1561                                 case (1):
1562                                 case (3):
1563                                 case (4):
1564                                         cs->hw.hfcpci.nt_timer = 0;
1565                                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1566                                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1567                                         break;
1568                                 default:
1569                                         break;
1570                         }
1571                         spin_unlock_irqrestore(&cs->lock, flags);
1572                 }
1573         }
1574         if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
1575                 DChannel_proc_rcv(cs);
1576         if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
1577                 DChannel_proc_xmt(cs);
1578 }
1579
1580
1581 /********************************/
1582 /* called for card init message */
1583 /********************************/
1584 static void
1585 inithfcpci(struct IsdnCardState *cs)
1586 {
1587         cs->bcs[0].BC_SetStack = setstack_2b;
1588         cs->bcs[1].BC_SetStack = setstack_2b;
1589         cs->bcs[0].BC_Close = close_hfcpci;
1590         cs->bcs[1].BC_Close = close_hfcpci;
1591         cs->dbusytimer.function = (void *) hfcpci_dbusy_timer;
1592         cs->dbusytimer.data = (long) cs;
1593         init_timer(&cs->dbusytimer);
1594         mode_hfcpci(cs->bcs, 0, 0);
1595         mode_hfcpci(cs->bcs + 1, 0, 1);
1596 }
1597
1598
1599
1600 /*******************************************/
1601 /* handle card messages from control layer */
1602 /*******************************************/
1603 static int
1604 hfcpci_card_msg(struct IsdnCardState *cs, int mt, void *arg)
1605 {
1606         u_long flags;
1607
1608         if (cs->debug & L1_DEB_ISAC)
1609                 debugl1(cs, "HFCPCI: card_msg %x", mt);
1610         switch (mt) {
1611                 case CARD_RESET:
1612                         spin_lock_irqsave(&cs->lock, flags);
1613                         reset_hfcpci(cs);
1614                         spin_unlock_irqrestore(&cs->lock, flags);
1615                         return (0);
1616                 case CARD_RELEASE:
1617                         release_io_hfcpci(cs);
1618                         return (0);
1619                 case CARD_INIT:
1620                         spin_lock_irqsave(&cs->lock, flags);
1621                         inithfcpci(cs);
1622                         reset_hfcpci(cs);
1623                         spin_unlock_irqrestore(&cs->lock, flags);
1624                         msleep(80);                             /* Timeout 80ms */
1625                         /* now switch timer interrupt off */
1626                         spin_lock_irqsave(&cs->lock, flags);
1627                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1628                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1629                         /* reinit mode reg */
1630                         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1631                         spin_unlock_irqrestore(&cs->lock, flags);
1632                         return (0);
1633                 case CARD_TEST:
1634                         return (0);
1635         }
1636         return (0);
1637 }
1638
1639
1640 /* this variable is used as card index when more than one cards are present */
1641 static struct pci_dev *dev_hfcpci __devinitdata = NULL;
1642
1643 #endif                          /* CONFIG_PCI */
1644
1645 int __devinit
1646 setup_hfcpci(struct IsdnCard *card)
1647 {
1648         u_long flags;
1649         struct IsdnCardState *cs = card->cs;
1650         char tmp[64];
1651         int i;
1652         struct pci_dev *tmp_hfcpci = NULL;
1653
1654 #ifdef __BIG_ENDIAN
1655 #error "not running on big endian machines now"
1656 #endif
1657         strcpy(tmp, hfcpci_revision);
1658         printk(KERN_INFO "HiSax: HFC-PCI driver Rev. %s\n", HiSax_getrev(tmp));
1659 #ifdef CONFIG_PCI
1660         cs->hw.hfcpci.int_s1 = 0;
1661         cs->dc.hfcpci.ph_state = 0;
1662         cs->hw.hfcpci.fifo = 255;
1663         if (cs->typ == ISDN_CTYPE_HFC_PCI) {
1664                 i = 0;
1665                 while (id_list[i].vendor_id) {
1666                         tmp_hfcpci = pci_find_device(id_list[i].vendor_id,
1667                                                      id_list[i].device_id,
1668                                                      dev_hfcpci);
1669                         i++;
1670                         if (tmp_hfcpci) {
1671                                 if (pci_enable_device(tmp_hfcpci))
1672                                         continue;
1673                                 pci_set_master(tmp_hfcpci);
1674                                 if ((card->para[0]) && (card->para[0] != (tmp_hfcpci->resource[ 0].start & PCI_BASE_ADDRESS_IO_MASK)))
1675                                         continue;
1676                                 else
1677                                         break;
1678                         }
1679                 }
1680
1681                 if (tmp_hfcpci) {
1682                         i--;
1683                         dev_hfcpci = tmp_hfcpci;        /* old device */
1684                         cs->hw.hfcpci.dev = dev_hfcpci;
1685                         cs->irq = dev_hfcpci->irq;
1686                         if (!cs->irq) {
1687                                 printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
1688                                 return (0);
1689                         }
1690                         cs->hw.hfcpci.pci_io = (char *)(unsigned long)dev_hfcpci->resource[1].start;
1691                         printk(KERN_INFO "HiSax: HFC-PCI card manufacturer: %s card name: %s\n", id_list[i].vendor_name, id_list[i].card_name);
1692                 } else {
1693                         printk(KERN_WARNING "HFC-PCI: No PCI card found\n");
1694                         return (0);
1695                 }
1696                 if (!cs->hw.hfcpci.pci_io) {
1697                         printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n");
1698                         return (0);
1699                 }
1700                 /* Allocate memory for FIFOS */
1701                 /* Because the HFC-PCI needs a 32K physical alignment, we */
1702                 /* need to allocate the double mem and align the address */
1703                 if (!(cs->hw.hfcpci.share_start = kmalloc(65536, GFP_KERNEL))) {
1704                         printk(KERN_WARNING "HFC-PCI: Error allocating memory for FIFO!\n");
1705                         return 0;
1706                 }
1707                 cs->hw.hfcpci.fifos = (void *)
1708                     (((ulong) cs->hw.hfcpci.share_start) & ~0x7FFF) + 0x8000;
1709                 pci_write_config_dword(cs->hw.hfcpci.dev, 0x80, (u_int) virt_to_bus(cs->hw.hfcpci.fifos));
1710                 cs->hw.hfcpci.pci_io = ioremap((ulong) cs->hw.hfcpci.pci_io, 256);
1711                 printk(KERN_INFO
1712                        "HFC-PCI: defined at mem %#x fifo %#x(%#x) IRQ %d HZ %d\n",
1713                        (u_int) cs->hw.hfcpci.pci_io,
1714                        (u_int) cs->hw.hfcpci.fifos,
1715                        (u_int) virt_to_bus(cs->hw.hfcpci.fifos),
1716                        cs->irq, HZ);
1717                 spin_lock_irqsave(&cs->lock, flags);
1718                 pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
1719                 cs->hw.hfcpci.int_m2 = 0;       /* disable alle interrupts */
1720                 cs->hw.hfcpci.int_m1 = 0;
1721                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1722                 Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
1723                 /* At this point the needed PCI config is done */
1724                 /* fifos are still not enabled */
1725                 INIT_WORK(&cs->tqueue, (void *)(void *) hfcpci_bh, cs);
1726                 cs->setstack_d = setstack_hfcpci;
1727                 cs->BC_Send_Data = &hfcpci_send_data;
1728                 cs->readisac = NULL;
1729                 cs->writeisac = NULL;
1730                 cs->readisacfifo = NULL;
1731                 cs->writeisacfifo = NULL;
1732                 cs->BC_Read_Reg = NULL;
1733                 cs->BC_Write_Reg = NULL;
1734                 cs->irq_func = &hfcpci_interrupt;
1735                 cs->irq_flags |= IRQF_SHARED;
1736                 cs->hw.hfcpci.timer.function = (void *) hfcpci_Timer;
1737                 cs->hw.hfcpci.timer.data = (long) cs;
1738                 init_timer(&cs->hw.hfcpci.timer);
1739                 cs->cardmsg = &hfcpci_card_msg;
1740                 cs->auxcmd = &hfcpci_auxcmd;
1741                 spin_unlock_irqrestore(&cs->lock, flags);
1742                 return (1);
1743         } else
1744                 return (0);     /* no valid card type */
1745 #else
1746         printk(KERN_WARNING "HFC-PCI: NO_PCI_BIOS\n");
1747         return (0);
1748 #endif                          /* CONFIG_PCI */
1749 }