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/sched.h>
  24 #include <linux/interrupt.h>
  25
  26 static const char *hfcpci_revision = "$Revision: 1.48.2.4 $";
  27
  28 /* table entry in the PCI devices list */
  29 typedef struct {
  30         int vendor_id;
  31         int device_id;
  32         char *vendor_name;
  33         char *card_name;
  34 } PCI_ENTRY;
  35
  36 #define NT_T1_COUNT     20      /* number of 3.125ms interrupts for G2 timeout */
  37 #define CLKDEL_TE       0x0e    /* CLKDEL in TE mode */
  38 #define CLKDEL_NT       0x6c    /* CLKDEL in NT mode */
  39
  40 static const PCI_ENTRY id_list[] =
  41 {
  42         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_2BD0, "CCD/Billion/Asuscom", "2BD0"},
  43         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B000, "Billion", "B000"},
  44         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B006, "Billion", "B006"},
  45         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B007, "Billion", "B007"},
  46         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B008, "Billion", "B008"},
  47         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B009, "Billion", "B009"},
  48         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00A, "Billion", "B00A"},
  49         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00B, "Billion", "B00B"},
  50         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B00C, "Billion", "B00C"},
  51         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B100, "Seyeon", "B100"},
  52         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B700, "Primux II S0", "B700"},
  53         {PCI_VENDOR_ID_CCD, PCI_DEVICE_ID_CCD_B701, "Primux II S0 NT", "B701"},
  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 /******************************************/
  70 /* free hardware resources used by driver */
  71 /******************************************/
  72 static void
  73 release_io_hfcpci(struct IsdnCardState *cs)
  74 {
  75         printk(KERN_INFO "HiSax: release hfcpci at %p\n",
  76                cs->hw.hfcpci.pci_io);
  77         cs->hw.hfcpci.int_m2 = 0;                                       /* interrupt output off ! */
  78         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  79         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);                       /* Reset On */
  80         mdelay(10);
  81         Write_hfc(cs, HFCPCI_CIRM, 0);                                  /* Reset Off */
  82         mdelay(10);
  83         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
  84         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, 0);       /* disable memory mapped ports + busmaster */
  85         del_timer(&cs->hw.hfcpci.timer);
  86         pci_free_consistent(cs->hw.hfcpci.dev, 0x8000,
  87                             cs->hw.hfcpci.fifos, cs->hw.hfcpci.dma);
  88         cs->hw.hfcpci.fifos = NULL;
  89         iounmap((void *)cs->hw.hfcpci.pci_io);
  90 }
  91
  92 /********************************************************************************/
  93 /* function called to reset the HFC PCI chip. A complete software reset of chip */
  94 /* and fifos is done.                                                           */
  95 /********************************************************************************/
  96 static void
  97 reset_hfcpci(struct IsdnCardState *cs)
  98 {
  99         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
 100         cs->hw.hfcpci.int_m2 = 0;       /* interrupt output off ! */
 101         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 102
 103         printk(KERN_INFO "HFC_PCI: resetting card\n");
 104         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO + PCI_ENA_MASTER);  /* enable memory ports + busmaster */
 105         Write_hfc(cs, HFCPCI_CIRM, HFCPCI_RESET);       /* Reset On */
 106         mdelay(10);
 107         Write_hfc(cs, HFCPCI_CIRM, 0);  /* Reset Off */
 108         mdelay(10);
 109         if (Read_hfc(cs, HFCPCI_STATUS) & 2)
 110                 printk(KERN_WARNING "HFC-PCI init bit busy\n");
 111
 112         cs->hw.hfcpci.fifo_en = 0x30;   /* only D fifos enabled */
 113         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 114
 115         cs->hw.hfcpci.trm = 0 + HFCPCI_BTRANS_THRESMASK;        /* no echo connect , threshold */
 116         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 117
 118         Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_TE); /* ST-Bit delay for TE-Mode */
 119         cs->hw.hfcpci.sctrl_e = HFCPCI_AUTO_AWAKE;
 120         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);   /* S/T Auto awake */
 121         cs->hw.hfcpci.bswapped = 0;     /* no exchange */
 122         cs->hw.hfcpci.nt_mode = 0;      /* we are in TE mode */
 123         cs->hw.hfcpci.ctmt = HFCPCI_TIM3_125 | HFCPCI_AUTO_TIMER;
 124         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 125
 126         cs->hw.hfcpci.int_m1 = HFCPCI_INTS_DTRANS | HFCPCI_INTS_DREC |
 127                 HFCPCI_INTS_L1STATE | HFCPCI_INTS_TIMER;
 128         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 129
 130         /* Clear already pending ints */
 131         if (Read_hfc(cs, HFCPCI_INT_S1));
 132
 133         Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 2);    /* HFC ST 2 */
 134         udelay(10);
 135         Write_hfc(cs, HFCPCI_STATES, 2);        /* HFC ST 2 */
 136         cs->hw.hfcpci.mst_m = HFCPCI_MASTER;    /* HFC Master Mode */
 137
 138         Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
 139         cs->hw.hfcpci.sctrl = 0x40;     /* set tx_lo mode, error in datasheet ! */
 140         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 141         cs->hw.hfcpci.sctrl_r = 0;
 142         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 143
 144         /* Init GCI/IOM2 in master mode */
 145         /* Slots 0 and 1 are set for B-chan 1 and 2 */
 146         /* D- and monitor/CI channel are not enabled */
 147         /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */
 148         /* STIO2 is used as data input, B1+B2 from IOM->ST */
 149         /* ST B-channel send disabled -> continuous 1s */
 150         /* The IOM slots are always enabled */
 151         cs->hw.hfcpci.conn = 0x36;      /* set data flow directions */
 152         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 153         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* B1-Slot 0 STIO1 out enabled */
 154         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* B2-Slot 1 STIO1 out enabled */
 155         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* B1-Slot 0 STIO2 in enabled */
 156         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* B2-Slot 1 STIO2 in enabled */
 157
 158         /* Finally enable IRQ output */
 159         cs->hw.hfcpci.int_m2 = HFCPCI_IRQ_ENABLE;
 160         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
 161         if (Read_hfc(cs, HFCPCI_INT_S1));
 162 }
 163
 164 /***************************************************/
 165 /* Timer function called when kernel timer expires */
 166 /***************************************************/
 167 static void
 168 hfcpci_Timer(struct timer_list *t)
 169 {
 170         struct IsdnCardState *cs = from_timer(cs, t, hw.hfcpci.timer);
 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 packet 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 }
 514
 515 /**************************/
 516 /* D-channel send routine */
 517 /**************************/
 518 static void
 519 hfcpci_fill_dfifo(struct IsdnCardState *cs)
 520 {
 521         int fcnt;
 522         int count, new_z1, maxlen;
 523         dfifo_type *df;
 524         u_char *src, *dst, new_f1;
 525
 526         if (!cs->tx_skb)
 527                 return;
 528         if (cs->tx_skb->len <= 0)
 529                 return;
 530
 531         df = &((fifo_area *) (cs->hw.hfcpci.fifos))->d_chan.d_tx;
 532
 533         if (cs->debug & L1_DEB_ISAC)
 534                 debugl1(cs, "hfcpci_fill_Dfifo f1(%d) f2(%d) z1(f1)(%x)",
 535                         df->f1, df->f2,
 536                         df->za[df->f1 & D_FREG_MASK].z1);
 537         fcnt = df->f1 - df->f2; /* frame count actually buffered */
 538         if (fcnt < 0)
 539                 fcnt += (MAX_D_FRAMES + 1);     /* if wrap around */
 540         if (fcnt > (MAX_D_FRAMES - 1)) {
 541                 if (cs->debug & L1_DEB_ISAC)
 542                         debugl1(cs, "hfcpci_fill_Dfifo more as 14 frames");
 543 #ifdef ERROR_STATISTIC
 544                 cs->err_tx++;
 545 #endif
 546                 return;
 547         }
 548         /* now determine free bytes in FIFO buffer */
 549         count = df->za[df->f2 & D_FREG_MASK].z2 - df->za[df->f1 & D_FREG_MASK].z1 - 1;
 550         if (count <= 0)
 551                 count += D_FIFO_SIZE;   /* count now contains available bytes */
 552
 553         if (cs->debug & L1_DEB_ISAC)
 554                 debugl1(cs, "hfcpci_fill_Dfifo count(%u/%d)",
 555                         cs->tx_skb->len, count);
 556         if (count < cs->tx_skb->len) {
 557                 if (cs->debug & L1_DEB_ISAC)
 558                         debugl1(cs, "hfcpci_fill_Dfifo no fifo mem");
 559                 return;
 560         }
 561         count = cs->tx_skb->len;        /* get frame len */
 562         new_z1 = (df->za[df->f1 & D_FREG_MASK].z1 + count) & (D_FIFO_SIZE - 1);
 563         new_f1 = ((df->f1 + 1) & D_FREG_MASK) | (D_FREG_MASK + 1);
 564         src = cs->tx_skb->data; /* source pointer */
 565         dst = df->data + df->za[df->f1 & D_FREG_MASK].z1;
 566         maxlen = D_FIFO_SIZE - df->za[df->f1 & D_FREG_MASK].z1;         /* end fifo */
 567         if (maxlen > count)
 568                 maxlen = count; /* limit size */
 569         memcpy(dst, src, maxlen);       /* first copy */
 570
 571         count -= maxlen;        /* remaining bytes */
 572         if (count) {
 573                 dst = df->data; /* start of buffer */
 574                 src += maxlen;  /* new position */
 575                 memcpy(dst, src, count);
 576         }
 577         df->za[new_f1 & D_FREG_MASK].z1 = new_z1;       /* for next buffer */
 578         df->za[df->f1 & D_FREG_MASK].z1 = new_z1;       /* new pos actual buffer */
 579         df->f1 = new_f1;        /* next frame */
 580
 581         dev_kfree_skb_any(cs->tx_skb);
 582         cs->tx_skb = NULL;
 583 }
 584
 585 /**************************/
 586 /* B-channel send routine */
 587 /**************************/
 588 static void
 589 hfcpci_fill_fifo(struct BCState *bcs)
 590 {
 591         struct IsdnCardState *cs = bcs->cs;
 592         int maxlen, fcnt;
 593         int count, new_z1;
 594         bzfifo_type *bz;
 595         u_char *bdata;
 596         u_char new_f1, *src, *dst;
 597         unsigned short *z1t, *z2t;
 598
 599         if (!bcs->tx_skb)
 600                 return;
 601         if (bcs->tx_skb->len <= 0)
 602                 return;
 603
 604         if ((bcs->channel) && (!cs->hw.hfcpci.bswapped)) {
 605                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b2;
 606                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b2;
 607         } else {
 608                 bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txbz_b1;
 609                 bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.txdat_b1;
 610         }
 611
 612         if (bcs->mode == L1_MODE_TRANS) {
 613                 z1t = &bz->za[MAX_B_FRAMES].z1;
 614                 z2t = z1t + 1;
 615                 if (cs->debug & L1_DEB_HSCX)
 616                         debugl1(cs, "hfcpci_fill_fifo_trans %d z1(%x) z2(%x)",
 617                                 bcs->channel, *z1t, *z2t);
 618                 fcnt = *z2t - *z1t;
 619                 if (fcnt <= 0)
 620                         fcnt += B_FIFO_SIZE;    /* fcnt contains available bytes in fifo */
 621                 fcnt = B_FIFO_SIZE - fcnt;      /* remaining bytes to send */
 622
 623                 while ((fcnt < 2 * HFCPCI_BTRANS_THRESHOLD) && (bcs->tx_skb)) {
 624                         if (bcs->tx_skb->len < B_FIFO_SIZE - fcnt) {
 625                                 /* data is suitable for fifo */
 626                                 count = bcs->tx_skb->len;
 627
 628                                 new_z1 = *z1t + count;  /* new buffer Position */
 629                                 if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 630                                         new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 631                                 src = bcs->tx_skb->data;        /* source pointer */
 632                                 dst = bdata + (*z1t - B_SUB_VAL);
 633                                 maxlen = (B_FIFO_SIZE + B_SUB_VAL) - *z1t;      /* end of fifo */
 634                                 if (maxlen > count)
 635                                         maxlen = count;         /* limit size */
 636                                 memcpy(dst, src, maxlen);       /* first copy */
 637
 638                                 count -= maxlen;        /* remaining bytes */
 639                                 if (count) {
 640                                         dst = bdata;    /* start of buffer */
 641                                         src += maxlen;  /* new position */
 642                                         memcpy(dst, src, count);
 643                                 }
 644                                 bcs->tx_cnt -= bcs->tx_skb->len;
 645                                 fcnt += bcs->tx_skb->len;
 646                                 *z1t = new_z1;  /* now send data */
 647                         } else if (cs->debug & L1_DEB_HSCX)
 648                                 debugl1(cs, "hfcpci_fill_fifo_trans %d frame length %d discarded",
 649                                         bcs->channel, bcs->tx_skb->len);
 650
 651                         if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) &&
 652                             (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 653                                 u_long  flags;
 654                                 spin_lock_irqsave(&bcs->aclock, flags);
 655                                 bcs->ackcnt += bcs->tx_skb->len;
 656                                 spin_unlock_irqrestore(&bcs->aclock, flags);
 657                                 schedule_event(bcs, B_ACKPENDING);
 658                         }
 659
 660                         dev_kfree_skb_any(bcs->tx_skb);
 661                         bcs->tx_skb = skb_dequeue(&bcs->squeue);        /* fetch next data */
 662                 }
 663                 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 664                 return;
 665         }
 666         if (cs->debug & L1_DEB_HSCX)
 667                 debugl1(cs, "hfcpci_fill_fifo_hdlc %d f1(%d) f2(%d) z1(f1)(%x)",
 668                         bcs->channel, bz->f1, bz->f2,
 669                         bz->za[bz->f1].z1);
 670
 671         fcnt = bz->f1 - bz->f2; /* frame count actually buffered */
 672         if (fcnt < 0)
 673                 fcnt += (MAX_B_FRAMES + 1);     /* if wrap around */
 674         if (fcnt > (MAX_B_FRAMES - 1)) {
 675                 if (cs->debug & L1_DEB_HSCX)
 676                         debugl1(cs, "hfcpci_fill_Bfifo more as 14 frames");
 677                 return;
 678         }
 679         /* now determine free bytes in FIFO buffer */
 680         count = bz->za[bz->f2].z2 - bz->za[bz->f1].z1 - 1;
 681         if (count <= 0)
 682                 count += B_FIFO_SIZE;   /* count now contains available bytes */
 683
 684         if (cs->debug & L1_DEB_HSCX)
 685                 debugl1(cs, "hfcpci_fill_fifo %d count(%u/%d),%lx",
 686                         bcs->channel, bcs->tx_skb->len,
 687                         count, current->state);
 688
 689         if (count < bcs->tx_skb->len) {
 690                 if (cs->debug & L1_DEB_HSCX)
 691                         debugl1(cs, "hfcpci_fill_fifo no fifo mem");
 692                 return;
 693         }
 694         count = bcs->tx_skb->len;       /* get frame len */
 695         new_z1 = bz->za[bz->f1].z1 + count;     /* new buffer Position */
 696         if (new_z1 >= (B_FIFO_SIZE + B_SUB_VAL))
 697                 new_z1 -= B_FIFO_SIZE;  /* buffer wrap */
 698
 699         new_f1 = ((bz->f1 + 1) & MAX_B_FRAMES);
 700         src = bcs->tx_skb->data;        /* source pointer */
 701         dst = bdata + (bz->za[bz->f1].z1 - B_SUB_VAL);
 702         maxlen = (B_FIFO_SIZE + B_SUB_VAL) - bz->za[bz->f1].z1;         /* end fifo */
 703         if (maxlen > count)
 704                 maxlen = count; /* limit size */
 705         memcpy(dst, src, maxlen);       /* first copy */
 706
 707         count -= maxlen;        /* remaining bytes */
 708         if (count) {
 709                 dst = bdata;    /* start of buffer */
 710                 src += maxlen;  /* new position */
 711                 memcpy(dst, src, count);
 712         }
 713         bcs->tx_cnt -= bcs->tx_skb->len;
 714         if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) &&
 715             (PACKET_NOACK != bcs->tx_skb->pkt_type)) {
 716                 u_long  flags;
 717                 spin_lock_irqsave(&bcs->aclock, flags);
 718                 bcs->ackcnt += bcs->tx_skb->len;
 719                 spin_unlock_irqrestore(&bcs->aclock, flags);
 720                 schedule_event(bcs, B_ACKPENDING);
 721         }
 722
 723         bz->za[new_f1].z1 = new_z1;     /* for next buffer */
 724         bz->f1 = new_f1;        /* next frame */
 725
 726         dev_kfree_skb_any(bcs->tx_skb);
 727         bcs->tx_skb = NULL;
 728         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
 729 }
 730
 731 /**********************************************/
 732 /* D-channel l1 state call for leased NT-mode */
 733 /**********************************************/
 734 static void
 735 dch_nt_l2l1(struct PStack *st, int pr, void *arg)
 736 {
 737         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
 738
 739         switch (pr) {
 740         case (PH_DATA | REQUEST):
 741         case (PH_PULL | REQUEST):
 742         case (PH_PULL | INDICATION):
 743                 st->l1.l1hw(st, pr, arg);
 744                 break;
 745         case (PH_ACTIVATE | REQUEST):
 746                 st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL);
 747                 break;
 748         case (PH_TESTLOOP | REQUEST):
 749                 if (1 & (long) arg)
 750                         debugl1(cs, "PH_TEST_LOOP B1");
 751                 if (2 & (long) arg)
 752                         debugl1(cs, "PH_TEST_LOOP B2");
 753                 if (!(3 & (long) arg))
 754                         debugl1(cs, "PH_TEST_LOOP DISABLED");
 755                 st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg);
 756                 break;
 757         default:
 758                 if (cs->debug)
 759                         debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr);
 760                 break;
 761         }
 762 }
 763
 764
 765
 766 /***********************/
 767 /* set/reset echo mode */
 768 /***********************/
 769 static int
 770 hfcpci_auxcmd(struct IsdnCardState *cs, isdn_ctrl *ic)
 771 {
 772         u_long  flags;
 773         int     i = *(unsigned int *) ic->parm.num;
 774
 775         if ((ic->arg == 98) &&
 776             (!(cs->hw.hfcpci.int_m1 & (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC + HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC)))) {
 777                 spin_lock_irqsave(&cs->lock, flags);
 778                 Write_hfc(cs, HFCPCI_CLKDEL, CLKDEL_NT); /* ST-Bit delay for NT-Mode */
 779                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 0);    /* HFC ST G0 */
 780                 udelay(10);
 781                 cs->hw.hfcpci.sctrl |= SCTRL_MODE_NT;
 782                 Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);       /* set NT-mode */
 783                 udelay(10);
 784                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 1);    /* HFC ST G1 */
 785                 udelay(10);
 786                 Write_hfc(cs, HFCPCI_STATES, 1 | HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
 787                 cs->dc.hfcpci.ph_state = 1;
 788                 cs->hw.hfcpci.nt_mode = 1;
 789                 cs->hw.hfcpci.nt_timer = 0;
 790                 cs->stlist->l2.l2l1 = dch_nt_l2l1;
 791                 spin_unlock_irqrestore(&cs->lock, flags);
 792                 debugl1(cs, "NT mode activated");
 793                 return (0);
 794         }
 795         if ((cs->chanlimit > 1) || (cs->hw.hfcpci.bswapped) ||
 796             (cs->hw.hfcpci.nt_mode) || (ic->arg != 12))
 797                 return (-EINVAL);
 798
 799         spin_lock_irqsave(&cs->lock, flags);
 800         if (i) {
 801                 cs->logecho = 1;
 802                 cs->hw.hfcpci.trm |= 0x20;      /* enable echo chan */
 803                 cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_B2REC;
 804                 cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2RX;
 805         } else {
 806                 cs->logecho = 0;
 807                 cs->hw.hfcpci.trm &= ~0x20;     /* disable echo chan */
 808                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_B2REC;
 809                 cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2RX;
 810         }
 811         cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
 812         cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
 813         cs->hw.hfcpci.conn |= 0x10;     /* B2-IOM -> B2-ST */
 814         cs->hw.hfcpci.ctmt &= ~2;
 815         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
 816         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
 817         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
 818         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
 819         Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
 820         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
 821         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
 822         spin_unlock_irqrestore(&cs->lock, flags);
 823         return (0);
 824 }                               /* hfcpci_auxcmd */
 825
 826 /*****************************/
 827 /* E-channel receive routine */
 828 /*****************************/
 829 static void
 830 receive_emsg(struct IsdnCardState *cs)
 831 {
 832         int rcnt;
 833         int receive, count = 5;
 834         bzfifo_type *bz;
 835         u_char *bdata;
 836         z_type *zp;
 837         u_char *ptr, *ptr1, new_f2;
 838         int total, maxlen, new_z2;
 839         u_char e_buffer[256];
 840
 841         bz = &((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxbz_b2;
 842         bdata = ((fifo_area *) (cs->hw.hfcpci.fifos))->b_chans.rxdat_b2;
 843 Begin:
 844         count--;
 845         if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 846                 debugl1(cs, "echo_rec_data blocked");
 847                 return;
 848         }
 849         if (bz->f1 != bz->f2) {
 850                 if (cs->debug & L1_DEB_ISAC)
 851                         debugl1(cs, "hfcpci e_rec f1(%d) f2(%d)",
 852                                 bz->f1, bz->f2);
 853                 zp = &bz->za[bz->f2];
 854
 855                 rcnt = zp->z1 - zp->z2;
 856                 if (rcnt < 0)
 857                         rcnt += B_FIFO_SIZE;
 858                 rcnt++;
 859                 if (cs->debug & L1_DEB_ISAC)
 860                         debugl1(cs, "hfcpci e_rec z1(%x) z2(%x) cnt(%d)",
 861                                 zp->z1, zp->z2, rcnt);
 862                 new_z2 = zp->z2 + rcnt;         /* new position in fifo */
 863                 if (new_z2 >= (B_FIFO_SIZE + B_SUB_VAL))
 864                         new_z2 -= B_FIFO_SIZE;  /* buffer wrap */
 865                 new_f2 = (bz->f2 + 1) & MAX_B_FRAMES;
 866                 if ((rcnt > 256 + 3) || (count < 4) ||
 867                     (*(bdata + (zp->z1 - B_SUB_VAL)))) {
 868                         if (cs->debug & L1_DEB_WARN)
 869                                 debugl1(cs, "hfcpci_empty_echan: incoming packet invalid length %d or crc", rcnt);
 870                         bz->za[new_f2].z2 = new_z2;
 871                         bz->f2 = new_f2;        /* next buffer */
 872                 } else {
 873                         total = rcnt;
 874                         rcnt -= 3;
 875                         ptr = e_buffer;
 876
 877                         if (zp->z2 <= B_FIFO_SIZE + B_SUB_VAL)
 878                                 maxlen = rcnt;  /* complete transfer */
 879                         else
 880                                 maxlen = B_FIFO_SIZE + B_SUB_VAL - zp->z2;      /* maximum */
 881
 882                         ptr1 = bdata + (zp->z2 - B_SUB_VAL);    /* start of data */
 883                         memcpy(ptr, ptr1, maxlen);      /* copy data */
 884                         rcnt -= maxlen;
 885
 886                         if (rcnt) {     /* rest remaining */
 887                                 ptr += maxlen;
 888                                 ptr1 = bdata;   /* start of buffer */
 889                                 memcpy(ptr, ptr1, rcnt);        /* rest */
 890                         }
 891                         bz->za[new_f2].z2 = new_z2;
 892                         bz->f2 = new_f2;        /* next buffer */
 893                         if (cs->debug & DEB_DLOG_HEX) {
 894                                 ptr = cs->dlog;
 895                                 if ((total - 3) < MAX_DLOG_SPACE / 3 - 10) {
 896                                         *ptr++ = 'E';
 897                                         *ptr++ = 'C';
 898                                         *ptr++ = 'H';
 899                                         *ptr++ = 'O';
 900                                         *ptr++ = ':';
 901                                         ptr += QuickHex(ptr, e_buffer, total - 3);
 902                                         ptr--;
 903                                         *ptr++ = '\n';
 904                                         *ptr = 0;
 905                                         HiSax_putstatus(cs, NULL, cs->dlog);
 906                                 } else
 907                                         HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", total - 3);
 908                         }
 909                 }
 910
 911                 rcnt = bz->f1 - bz->f2;
 912                 if (rcnt < 0)
 913                         rcnt += MAX_B_FRAMES + 1;
 914                 if (rcnt > 1)
 915                         receive = 1;
 916                 else
 917                         receive = 0;
 918         } else
 919                 receive = 0;
 920         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 921         if (count && receive)
 922                 goto Begin;
 923 }                               /* receive_emsg */
 924
 925 /*********************/
 926 /* Interrupt handler */
 927 /*********************/
 928 static irqreturn_t
 929 hfcpci_interrupt(int intno, void *dev_id)
 930 {
 931         u_long flags;
 932         struct IsdnCardState *cs = dev_id;
 933         u_char exval;
 934         struct BCState *bcs;
 935         int count = 15;
 936         u_char val, stat;
 937
 938         if (!(cs->hw.hfcpci.int_m2 & 0x08)) {
 939                 debugl1(cs, "HFC-PCI: int_m2 %x not initialised", cs->hw.hfcpci.int_m2);
 940                 return IRQ_NONE;        /* not initialised */
 941         }
 942         spin_lock_irqsave(&cs->lock, flags);
 943         if (HFCPCI_ANYINT & (stat = Read_hfc(cs, HFCPCI_STATUS))) {
 944                 val = Read_hfc(cs, HFCPCI_INT_S1);
 945                 if (cs->debug & L1_DEB_ISAC)
 946                         debugl1(cs, "HFC-PCI: stat(%02x) s1(%02x)", stat, val);
 947         } else {
 948                 spin_unlock_irqrestore(&cs->lock, flags);
 949                 return IRQ_NONE;
 950         }
 951         if (cs->debug & L1_DEB_ISAC)
 952                 debugl1(cs, "HFC-PCI irq %x %s", val,
 953                         test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ?
 954                         "locked" : "unlocked");
 955         val &= cs->hw.hfcpci.int_m1;
 956         if (val & 0x40) {       /* state machine irq */
 957                 exval = Read_hfc(cs, HFCPCI_STATES) & 0xf;
 958                 if (cs->debug & L1_DEB_ISAC)
 959                         debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcpci.ph_state,
 960                                 exval);
 961                 cs->dc.hfcpci.ph_state = exval;
 962                 sched_event_D_pci(cs, D_L1STATECHANGE);
 963                 val &= ~0x40;
 964         }
 965         if (val & 0x80) {       /* timer irq */
 966                 if (cs->hw.hfcpci.nt_mode) {
 967                         if ((--cs->hw.hfcpci.nt_timer) < 0)
 968                                 sched_event_D_pci(cs, D_L1STATECHANGE);
 969                 }
 970                 val &= ~0x80;
 971                 Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
 972         }
 973         while (val) {
 974                 if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 975                         cs->hw.hfcpci.int_s1 |= val;
 976                         spin_unlock_irqrestore(&cs->lock, flags);
 977                         return IRQ_HANDLED;
 978                 }
 979                 if (cs->hw.hfcpci.int_s1 & 0x18) {
 980                         exval = val;
 981                         val = cs->hw.hfcpci.int_s1;
 982                         cs->hw.hfcpci.int_s1 = exval;
 983                 }
 984                 if (val & 0x08) {
 985                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
 986                                 if (cs->debug)
 987                                         debugl1(cs, "hfcpci spurious 0x08 IRQ");
 988                         } else
 989                                 main_rec_hfcpci(bcs);
 990                 }
 991                 if (val & 0x10) {
 992                         if (cs->logecho)
 993                                 receive_emsg(cs);
 994                         else if (!(bcs = Sel_BCS(cs, 1))) {
 995                                 if (cs->debug)
 996                                         debugl1(cs, "hfcpci spurious 0x10 IRQ");
 997                         } else
 998                                 main_rec_hfcpci(bcs);
 999                 }
1000                 if (val & 0x01) {
1001                         if (!(bcs = Sel_BCS(cs, cs->hw.hfcpci.bswapped ? 1 : 0))) {
1002                                 if (cs->debug)
1003                                         debugl1(cs, "hfcpci spurious 0x01 IRQ");
1004                         } else {
1005                                 if (bcs->tx_skb) {
1006                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1007                                                 hfcpci_fill_fifo(bcs);
1008                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1009                                         } else
1010                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1011                                 } else {
1012                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1013                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1014                                                         hfcpci_fill_fifo(bcs);
1015                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1016                                                 } else
1017                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1018                                         } else {
1019                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1020                                         }
1021                                 }
1022                         }
1023                 }
1024                 if (val & 0x02) {
1025                         if (!(bcs = Sel_BCS(cs, 1))) {
1026                                 if (cs->debug)
1027                                         debugl1(cs, "hfcpci spurious 0x02 IRQ");
1028                         } else {
1029                                 if (bcs->tx_skb) {
1030                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1031                                                 hfcpci_fill_fifo(bcs);
1032                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1033                                         } else
1034                                                 debugl1(cs, "fill_data %d blocked", bcs->channel);
1035                                 } else {
1036                                         if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
1037                                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1038                                                         hfcpci_fill_fifo(bcs);
1039                                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1040                                                 } else
1041                                                         debugl1(cs, "fill_data %d blocked", bcs->channel);
1042                                         } else {
1043                                                 hfcpci_sched_event(bcs, B_XMTBUFREADY);
1044                                         }
1045                                 }
1046                         }
1047                 }
1048                 if (val & 0x20) {       /* receive dframe */
1049                         receive_dmsg(cs);
1050                 }
1051                 if (val & 0x04) {       /* dframe transmitted */
1052                         if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
1053                                 del_timer(&cs->dbusytimer);
1054                         if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
1055                                 sched_event_D_pci(cs, D_CLEARBUSY);
1056                         if (cs->tx_skb) {
1057                                 if (cs->tx_skb->len) {
1058                                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1059                                                 hfcpci_fill_dfifo(cs);
1060                                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1061                                         } else {
1062                                                 debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1063                                         }
1064                                         goto afterXPR;
1065                                 } else {
1066                                         dev_kfree_skb_irq(cs->tx_skb);
1067                                         cs->tx_cnt = 0;
1068                                         cs->tx_skb = NULL;
1069                                 }
1070                         }
1071                         if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
1072                                 cs->tx_cnt = 0;
1073                                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1074                                         hfcpci_fill_dfifo(cs);
1075                                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1076                                 } else {
1077                                         debugl1(cs, "hfcpci_fill_dfifo irq blocked");
1078                                 }
1079                         } else
1080                                 sched_event_D_pci(cs, D_XMTBUFREADY);
1081                 }
1082         afterXPR:
1083                 if (cs->hw.hfcpci.int_s1 && count--) {
1084                         val = cs->hw.hfcpci.int_s1;
1085                         cs->hw.hfcpci.int_s1 = 0;
1086                         if (cs->debug & L1_DEB_ISAC)
1087                                 debugl1(cs, "HFC-PCI irq %x loop %d", val, 15 - count);
1088                 } else
1089                         val = 0;
1090         }
1091         spin_unlock_irqrestore(&cs->lock, flags);
1092         return IRQ_HANDLED;
1093 }
1094
1095 /********************************************************************/
1096 /* timer callback for D-chan busy resolution. Currently no function */
1097 /********************************************************************/
1098 static void
1099 hfcpci_dbusy_timer(struct timer_list *t)
1100 {
1101 }
1102
1103 /*************************************/
1104 /* Layer 1 D-channel hardware access */
1105 /*************************************/
1106 static void
1107 HFCPCI_l1hw(struct PStack *st, int pr, void *arg)
1108 {
1109         u_long flags;
1110         struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
1111         struct sk_buff *skb = arg;
1112
1113         switch (pr) {
1114         case (PH_DATA | REQUEST):
1115                 if (cs->debug & DEB_DLOG_HEX)
1116                         LogFrame(cs, skb->data, skb->len);
1117                 if (cs->debug & DEB_DLOG_VERBOSE)
1118                         dlogframe(cs, skb, 0);
1119                 spin_lock_irqsave(&cs->lock, flags);
1120                 if (cs->tx_skb) {
1121                         skb_queue_tail(&cs->sq, skb);
1122 #ifdef L2FRAME_DEBUG            /* psa */
1123                         if (cs->debug & L1_DEB_LAPD)
1124                                 Logl2Frame(cs, skb, "PH_DATA Queued", 0);
1125 #endif
1126                 } else {
1127                         cs->tx_skb = skb;
1128                         cs->tx_cnt = 0;
1129 #ifdef L2FRAME_DEBUG            /* psa */
1130                         if (cs->debug & L1_DEB_LAPD)
1131                                 Logl2Frame(cs, skb, "PH_DATA", 0);
1132 #endif
1133                         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1134                                 hfcpci_fill_dfifo(cs);
1135                                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1136                         } else
1137                                 debugl1(cs, "hfcpci_fill_dfifo blocked");
1138
1139                 }
1140                 spin_unlock_irqrestore(&cs->lock, flags);
1141                 break;
1142         case (PH_PULL | INDICATION):
1143                 spin_lock_irqsave(&cs->lock, flags);
1144                 if (cs->tx_skb) {
1145                         if (cs->debug & L1_DEB_WARN)
1146                                 debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
1147                         skb_queue_tail(&cs->sq, skb);
1148                         spin_unlock_irqrestore(&cs->lock, flags);
1149                         break;
1150                 }
1151                 if (cs->debug & DEB_DLOG_HEX)
1152                         LogFrame(cs, skb->data, skb->len);
1153                 if (cs->debug & DEB_DLOG_VERBOSE)
1154                         dlogframe(cs, skb, 0);
1155                 cs->tx_skb = skb;
1156                 cs->tx_cnt = 0;
1157 #ifdef L2FRAME_DEBUG            /* psa */
1158                 if (cs->debug & L1_DEB_LAPD)
1159                         Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
1160 #endif
1161                 if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1162                         hfcpci_fill_dfifo(cs);
1163                         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1164                 } else
1165                         debugl1(cs, "hfcpci_fill_dfifo blocked");
1166                 spin_unlock_irqrestore(&cs->lock, flags);
1167                 break;
1168         case (PH_PULL | REQUEST):
1169 #ifdef L2FRAME_DEBUG            /* psa */
1170                 if (cs->debug & L1_DEB_LAPD)
1171                         debugl1(cs, "-> PH_REQUEST_PULL");
1172 #endif
1173                 spin_lock_irqsave(&cs->lock, flags);
1174                 if (!cs->tx_skb) {
1175                         test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1176                         st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1177                 } else
1178                         test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1179                 spin_unlock_irqrestore(&cs->lock, flags);
1180                 break;
1181         case (HW_RESET | REQUEST):
1182                 spin_lock_irqsave(&cs->lock, flags);
1183                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_LOAD_STATE | 3);    /* HFC ST 3 */
1184                 udelay(6);
1185                 Write_hfc(cs, HFCPCI_STATES, 3);        /* HFC ST 2 */
1186                 cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1187                 Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1188                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_ACTIVATE | HFCPCI_DO_ACTION);
1189                 spin_unlock_irqrestore(&cs->lock, flags);
1190                 l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
1191                 break;
1192         case (HW_ENABLE | REQUEST):
1193                 spin_lock_irqsave(&cs->lock, flags);
1194                 Write_hfc(cs, HFCPCI_STATES, HFCPCI_DO_ACTION);
1195                 spin_unlock_irqrestore(&cs->lock, flags);
1196                 break;
1197         case (HW_DEACTIVATE | REQUEST):
1198                 spin_lock_irqsave(&cs->lock, flags);
1199                 cs->hw.hfcpci.mst_m &= ~HFCPCI_MASTER;
1200                 Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1201                 spin_unlock_irqrestore(&cs->lock, flags);
1202                 break;
1203         case (HW_INFO3 | REQUEST):
1204                 spin_lock_irqsave(&cs->lock, flags);
1205                 cs->hw.hfcpci.mst_m |= HFCPCI_MASTER;
1206                 Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1207                 spin_unlock_irqrestore(&cs->lock, flags);
1208                 break;
1209         case (HW_TESTLOOP | REQUEST):
1210                 spin_lock_irqsave(&cs->lock, flags);
1211                 switch ((long) arg) {
1212                 case (1):
1213                         Write_hfc(cs, HFCPCI_B1_SSL, 0x80);     /* tx slot */
1214                         Write_hfc(cs, HFCPCI_B1_RSL, 0x80);     /* rx slot */
1215                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~7) | 1;
1216                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1217                         break;
1218
1219                 case (2):
1220                         Write_hfc(cs, HFCPCI_B2_SSL, 0x81);     /* tx slot */
1221                         Write_hfc(cs, HFCPCI_B2_RSL, 0x81);     /* rx slot */
1222                         cs->hw.hfcpci.conn = (cs->hw.hfcpci.conn & ~0x38) | 0x08;
1223                         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1224                         break;
1225
1226                 default:
1227                         spin_unlock_irqrestore(&cs->lock, flags);
1228                         if (cs->debug & L1_DEB_WARN)
1229                                 debugl1(cs, "hfcpci_l1hw loop invalid %4lx", (long) arg);
1230                         return;
1231                 }
1232                 cs->hw.hfcpci.trm |= 0x80;      /* enable IOM-loop */
1233                 Write_hfc(cs, HFCPCI_TRM, cs->hw.hfcpci.trm);
1234                 spin_unlock_irqrestore(&cs->lock, flags);
1235                 break;
1236         default:
1237                 if (cs->debug & L1_DEB_WARN)
1238                         debugl1(cs, "hfcpci_l1hw unknown pr %4x", pr);
1239                 break;
1240         }
1241 }
1242
1243 /***********************************************/
1244 /* called during init setting l1 stack pointer */
1245 /***********************************************/
1246 static void
1247 setstack_hfcpci(struct PStack *st, struct IsdnCardState *cs)
1248 {
1249         st->l1.l1hw = HFCPCI_l1hw;
1250 }
1251
1252 /**************************************/
1253 /* send B-channel data if not blocked */
1254 /**************************************/
1255 static void
1256 hfcpci_send_data(struct BCState *bcs)
1257 {
1258         struct IsdnCardState *cs = bcs->cs;
1259
1260         if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
1261                 hfcpci_fill_fifo(bcs);
1262                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
1263         } else
1264                 debugl1(cs, "send_data %d blocked", bcs->channel);
1265 }
1266
1267 /***************************************************************/
1268 /* activate/deactivate hardware for selected channels and mode */
1269 /***************************************************************/
1270 static void
1271 mode_hfcpci(struct BCState *bcs, int mode, int bc)
1272 {
1273         struct IsdnCardState *cs = bcs->cs;
1274         int fifo2;
1275
1276         if (cs->debug & L1_DEB_HSCX)
1277                 debugl1(cs, "HFCPCI bchannel mode %d bchan %d/%d",
1278                         mode, bc, bcs->channel);
1279         bcs->mode = mode;
1280         bcs->channel = bc;
1281         fifo2 = bc;
1282         if (cs->chanlimit > 1) {
1283                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1284                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1285         } else {
1286                 if (bc) {
1287                         if (mode != L1_MODE_NULL) {
1288                                 cs->hw.hfcpci.bswapped = 1;     /* B1 and B2 exchanged */
1289                                 cs->hw.hfcpci.sctrl_e |= 0x80;
1290                         } else {
1291                                 cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1292                                 cs->hw.hfcpci.sctrl_e &= ~0x80;
1293                         }
1294                         fifo2 = 0;
1295                 } else {
1296                         cs->hw.hfcpci.bswapped = 0;     /* B1 and B2 normal mode */
1297                         cs->hw.hfcpci.sctrl_e &= ~0x80;
1298                 }
1299         }
1300         switch (mode) {
1301         case (L1_MODE_NULL):
1302                 if (bc) {
1303                         cs->hw.hfcpci.sctrl &= ~SCTRL_B2_ENA;
1304                         cs->hw.hfcpci.sctrl_r &= ~SCTRL_B2_ENA;
1305                 } else {
1306                         cs->hw.hfcpci.sctrl &= ~SCTRL_B1_ENA;
1307                         cs->hw.hfcpci.sctrl_r &= ~SCTRL_B1_ENA;
1308                 }
1309                 if (fifo2) {
1310                         cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1311                         cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1312                 } else {
1313                         cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1314                         cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1315                 }
1316                 break;
1317         case (L1_MODE_TRANS):
1318                 hfcpci_clear_fifo_rx(cs, fifo2);
1319                 hfcpci_clear_fifo_tx(cs, fifo2);
1320                 if (bc) {
1321                         cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1322                         cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1323                 } else {
1324                         cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1325                         cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1326                 }
1327                 if (fifo2) {
1328                         cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1329                         cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1330                         cs->hw.hfcpci.ctmt |= 2;
1331                         cs->hw.hfcpci.conn &= ~0x18;
1332                 } else {
1333                         cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1334                         cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1335                         cs->hw.hfcpci.ctmt |= 1;
1336                         cs->hw.hfcpci.conn &= ~0x03;
1337                 }
1338                 break;
1339         case (L1_MODE_HDLC):
1340                 hfcpci_clear_fifo_rx(cs, fifo2);
1341                 hfcpci_clear_fifo_tx(cs, fifo2);
1342                 if (bc) {
1343                         cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1344                         cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1345                 } else {
1346                         cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1347                         cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1348                 }
1349                 if (fifo2) {
1350                         cs->hw.hfcpci.last_bfifo_cnt[1] = 0;
1351                         cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B2;
1352                         cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1353                         cs->hw.hfcpci.ctmt &= ~2;
1354                         cs->hw.hfcpci.conn &= ~0x18;
1355                 } else {
1356                         cs->hw.hfcpci.last_bfifo_cnt[0] = 0;
1357                         cs->hw.hfcpci.fifo_en |= HFCPCI_FIFOEN_B1;
1358                         cs->hw.hfcpci.int_m1 |= (HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1359                         cs->hw.hfcpci.ctmt &= ~1;
1360                         cs->hw.hfcpci.conn &= ~0x03;
1361                 }
1362                 break;
1363         case (L1_MODE_EXTRN):
1364                 if (bc) {
1365                         cs->hw.hfcpci.conn |= 0x10;
1366                         cs->hw.hfcpci.sctrl |= SCTRL_B2_ENA;
1367                         cs->hw.hfcpci.sctrl_r |= SCTRL_B2_ENA;
1368                         cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B2;
1369                         cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B2TRANS + HFCPCI_INTS_B2REC);
1370                 } else {
1371                         cs->hw.hfcpci.conn |= 0x02;
1372                         cs->hw.hfcpci.sctrl |= SCTRL_B1_ENA;
1373                         cs->hw.hfcpci.sctrl_r |= SCTRL_B1_ENA;
1374                         cs->hw.hfcpci.fifo_en &= ~HFCPCI_FIFOEN_B1;
1375                         cs->hw.hfcpci.int_m1 &= ~(HFCPCI_INTS_B1TRANS + HFCPCI_INTS_B1REC);
1376                 }
1377                 break;
1378         }
1379         Write_hfc(cs, HFCPCI_SCTRL_E, cs->hw.hfcpci.sctrl_e);
1380         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1381         Write_hfc(cs, HFCPCI_FIFO_EN, cs->hw.hfcpci.fifo_en);
1382         Write_hfc(cs, HFCPCI_SCTRL, cs->hw.hfcpci.sctrl);
1383         Write_hfc(cs, HFCPCI_SCTRL_R, cs->hw.hfcpci.sctrl_r);
1384         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt);
1385         Write_hfc(cs, HFCPCI_CONNECT, cs->hw.hfcpci.conn);
1386 }
1387
1388 /******************************/
1389 /* Layer2 -> Layer 1 Transfer */
1390 /******************************/
1391 static void
1392 hfcpci_l2l1(struct PStack *st, int pr, void *arg)
1393 {
1394         struct BCState  *bcs = st->l1.bcs;
1395         u_long          flags;
1396         struct sk_buff  *skb = arg;
1397
1398         switch (pr) {
1399         case (PH_DATA | REQUEST):
1400                 spin_lock_irqsave(&bcs->cs->lock, flags);
1401                 if (bcs->tx_skb) {
1402                         skb_queue_tail(&bcs->squeue, skb);
1403                 } else {
1404                         bcs->tx_skb = skb;
1405 //                              test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1406                         bcs->cs->BC_Send_Data(bcs);
1407                 }
1408                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1409                 break;
1410         case (PH_PULL | INDICATION):
1411                 spin_lock_irqsave(&bcs->cs->lock, flags);
1412                 if (bcs->tx_skb) {
1413                         spin_unlock_irqrestore(&bcs->cs->lock, flags);
1414                         printk(KERN_WARNING "hfc_l2l1: this shouldn't happen\n");
1415                         break;
1416                 }
1417 //                      test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
1418                 bcs->tx_skb = skb;
1419                 bcs->cs->BC_Send_Data(bcs);
1420                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1421                 break;
1422         case (PH_PULL | REQUEST):
1423                 if (!bcs->tx_skb) {
1424                         test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1425                         st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
1426                 } else
1427                         test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
1428                 break;
1429         case (PH_ACTIVATE | REQUEST):
1430                 spin_lock_irqsave(&bcs->cs->lock, flags);
1431                 test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
1432                 mode_hfcpci(bcs, st->l1.mode, st->l1.bc);
1433                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1434                 l1_msg_b(st, pr, arg);
1435                 break;
1436         case (PH_DEACTIVATE | REQUEST):
1437                 l1_msg_b(st, pr, arg);
1438                 break;
1439         case (PH_DEACTIVATE | CONFIRM):
1440                 spin_lock_irqsave(&bcs->cs->lock, flags);
1441                 test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
1442                 test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1443                 mode_hfcpci(bcs, 0, st->l1.bc);
1444                 spin_unlock_irqrestore(&bcs->cs->lock, flags);
1445                 st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
1446                 break;
1447         }
1448 }
1449
1450 /******************************************/
1451 /* deactivate B-channel access and queues */
1452 /******************************************/
1453 static void
1454 close_hfcpci(struct BCState *bcs)
1455 {
1456         mode_hfcpci(bcs, 0, bcs->channel);
1457         if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
1458                 skb_queue_purge(&bcs->rqueue);
1459                 skb_queue_purge(&bcs->squeue);
1460                 if (bcs->tx_skb) {
1461                         dev_kfree_skb_any(bcs->tx_skb);
1462                         bcs->tx_skb = NULL;
1463                         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1464                 }
1465         }
1466 }
1467
1468 /*************************************/
1469 /* init B-channel queues and control */
1470 /*************************************/
1471 static int
1472 open_hfcpcistate(struct IsdnCardState *cs, struct BCState *bcs)
1473 {
1474         if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
1475                 skb_queue_head_init(&bcs->rqueue);
1476                 skb_queue_head_init(&bcs->squeue);
1477         }
1478         bcs->tx_skb = NULL;
1479         test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
1480         bcs->event = 0;
1481         bcs->tx_cnt = 0;
1482         return (0);
1483 }
1484
1485 /*********************************/
1486 /* inits the stack for B-channel */
1487 /*********************************/
1488 static int
1489 setstack_2b(struct PStack *st, struct BCState *bcs)
1490 {
1491         bcs->channel = st->l1.bc;
1492         if (open_hfcpcistate(st->l1.hardware, bcs))
1493                 return (-1);
1494         st->l1.bcs = bcs;
1495         st->l2.l2l1 = hfcpci_l2l1;
1496         setstack_manager(st);
1497         bcs->st = st;
1498         setstack_l1_B(st);
1499         return (0);
1500 }
1501
1502 /***************************/
1503 /* handle L1 state changes */
1504 /***************************/
1505 static void
1506 hfcpci_bh(struct work_struct *work)
1507 {
1508         struct IsdnCardState *cs =
1509                 container_of(work, struct IsdnCardState, tqueue);
1510         u_long  flags;
1511 //      struct PStack *stptr;
1512
1513         if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) {
1514                 if (!cs->hw.hfcpci.nt_mode)
1515                         switch (cs->dc.hfcpci.ph_state) {
1516                         case (0):
1517                                 l1_msg(cs, HW_RESET | INDICATION, NULL);
1518                                 break;
1519                         case (3):
1520                                 l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
1521                                 break;
1522                         case (8):
1523                                 l1_msg(cs, HW_RSYNC | INDICATION, NULL);
1524                                 break;
1525                         case (6):
1526                                 l1_msg(cs, HW_INFO2 | INDICATION, NULL);
1527                                 break;
1528                         case (7):
1529                                 l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
1530                                 break;
1531                         default:
1532                                 break;
1533                         } else {
1534                         spin_lock_irqsave(&cs->lock, flags);
1535                         switch (cs->dc.hfcpci.ph_state) {
1536                         case (2):
1537                                 if (cs->hw.hfcpci.nt_timer < 0) {
1538                                         cs->hw.hfcpci.nt_timer = 0;
1539                                         cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1540                                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1541                                         /* Clear already pending ints */
1542                                         if (Read_hfc(cs, HFCPCI_INT_S1));
1543                                         Write_hfc(cs, HFCPCI_STATES, 4 | HFCPCI_LOAD_STATE);
1544                                         udelay(10);
1545                                         Write_hfc(cs, HFCPCI_STATES, 4);
1546                                         cs->dc.hfcpci.ph_state = 4;
1547                                 } else {
1548                                         cs->hw.hfcpci.int_m1 |= HFCPCI_INTS_TIMER;
1549                                         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1550                                         cs->hw.hfcpci.ctmt &= ~HFCPCI_AUTO_TIMER;
1551                                         cs->hw.hfcpci.ctmt |= HFCPCI_TIM3_125;
1552                                         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1553                                         Write_hfc(cs, HFCPCI_CTMT, cs->hw.hfcpci.ctmt | HFCPCI_CLTIMER);
1554                                         cs->hw.hfcpci.nt_timer = NT_T1_COUNT;
1555                                         Write_hfc(cs, HFCPCI_STATES, 2 | HFCPCI_NT_G2_G3);      /* allow G2 -> G3 transition */
1556                                 }
1557                                 break;
1558                         case (1):
1559                         case (3):
1560                         case (4):
1561                                 cs->hw.hfcpci.nt_timer = 0;
1562                                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1563                                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1564                                 break;
1565                         default:
1566                                 break;
1567                         }
1568                         spin_unlock_irqrestore(&cs->lock, flags);
1569                 }
1570         }
1571         if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
1572                 DChannel_proc_rcv(cs);
1573         if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
1574                 DChannel_proc_xmt(cs);
1575 }
1576
1577
1578 /********************************/
1579 /* called for card init message */
1580 /********************************/
1581 static void
1582 inithfcpci(struct IsdnCardState *cs)
1583 {
1584         cs->bcs[0].BC_SetStack = setstack_2b;
1585         cs->bcs[1].BC_SetStack = setstack_2b;
1586         cs->bcs[0].BC_Close = close_hfcpci;
1587         cs->bcs[1].BC_Close = close_hfcpci;
1588         timer_setup(&cs->dbusytimer, hfcpci_dbusy_timer, 0);
1589         mode_hfcpci(cs->bcs, 0, 0);
1590         mode_hfcpci(cs->bcs + 1, 0, 1);
1591 }
1592
1593
1594
1595 /*******************************************/
1596 /* handle card messages from control layer */
1597 /*******************************************/
1598 static int
1599 hfcpci_card_msg(struct IsdnCardState *cs, int mt, void *arg)
1600 {
1601         u_long flags;
1602
1603         if (cs->debug & L1_DEB_ISAC)
1604                 debugl1(cs, "HFCPCI: card_msg %x", mt);
1605         switch (mt) {
1606         case CARD_RESET:
1607                 spin_lock_irqsave(&cs->lock, flags);
1608                 reset_hfcpci(cs);
1609                 spin_unlock_irqrestore(&cs->lock, flags);
1610                 return (0);
1611         case CARD_RELEASE:
1612                 release_io_hfcpci(cs);
1613                 return (0);
1614         case CARD_INIT:
1615                 spin_lock_irqsave(&cs->lock, flags);
1616                 inithfcpci(cs);
1617                 reset_hfcpci(cs);
1618                 spin_unlock_irqrestore(&cs->lock, flags);
1619                 msleep(80);                             /* Timeout 80ms */
1620                 /* now switch timer interrupt off */
1621                 spin_lock_irqsave(&cs->lock, flags);
1622                 cs->hw.hfcpci.int_m1 &= ~HFCPCI_INTS_TIMER;
1623                 Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1624                 /* reinit mode reg */
1625                 Write_hfc(cs, HFCPCI_MST_MODE, cs->hw.hfcpci.mst_m);
1626                 spin_unlock_irqrestore(&cs->lock, flags);
1627                 return (0);
1628         case CARD_TEST:
1629                 return (0);
1630         }
1631         return (0);
1632 }
1633
1634
1635 /* this variable is used as card index when more than one cards are present */
1636 static struct pci_dev *dev_hfcpci = NULL;
1637
1638 int
1639 setup_hfcpci(struct IsdnCard *card)
1640 {
1641         u_long flags;
1642         struct IsdnCardState *cs = card->cs;
1643         char tmp[64];
1644         int i;
1645         struct pci_dev *tmp_hfcpci = NULL;
1646
1647         strcpy(tmp, hfcpci_revision);
1648         printk(KERN_INFO "HiSax: HFC-PCI driver Rev. %s\n", HiSax_getrev(tmp));
1649
1650         cs->hw.hfcpci.int_s1 = 0;
1651         cs->dc.hfcpci.ph_state = 0;
1652         cs->hw.hfcpci.fifo = 255;
1653         if (cs->typ != ISDN_CTYPE_HFC_PCI)
1654                 return (0);
1655
1656         i = 0;
1657         while (id_list[i].vendor_id) {
1658                 tmp_hfcpci = hisax_find_pci_device(id_list[i].vendor_id,
1659                                                    id_list[i].device_id,
1660                                                    dev_hfcpci);
1661                 i++;
1662                 if (tmp_hfcpci) {
1663                         dma_addr_t      dma_mask = DMA_BIT_MASK(32) & ~0x7fffUL;
1664                         if (pci_enable_device(tmp_hfcpci))
1665                                 continue;
1666                         if (pci_set_dma_mask(tmp_hfcpci, dma_mask)) {
1667                                 printk(KERN_WARNING
1668                                        "HiSax hfc_pci: No suitable DMA available.\n");
1669                                 continue;
1670                         }
1671                         if (pci_set_consistent_dma_mask(tmp_hfcpci, dma_mask)) {
1672                                 printk(KERN_WARNING
1673                                        "HiSax hfc_pci: No suitable consistent DMA available.\n");
1674                                 continue;
1675                         }
1676                         pci_set_master(tmp_hfcpci);
1677                         if ((card->para[0]) && (card->para[0] != (tmp_hfcpci->resource[0].start & PCI_BASE_ADDRESS_IO_MASK)))
1678                                 continue;
1679                         else
1680                                 break;
1681                 }
1682         }
1683
1684         if (!tmp_hfcpci) {
1685                 printk(KERN_WARNING "HFC-PCI: No PCI card found\n");
1686                 return (0);
1687         }
1688
1689         i--;
1690         dev_hfcpci = tmp_hfcpci;        /* old device */
1691         cs->hw.hfcpci.dev = dev_hfcpci;
1692         cs->irq = dev_hfcpci->irq;
1693         if (!cs->irq) {
1694                 printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
1695                 return (0);
1696         }
1697         cs->hw.hfcpci.pci_io = (char *)(unsigned long)dev_hfcpci->resource[1].start;
1698         printk(KERN_INFO "HiSax: HFC-PCI card manufacturer: %s card name: %s\n", id_list[i].vendor_name, id_list[i].card_name);
1699
1700         if (!cs->hw.hfcpci.pci_io) {
1701                 printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n");
1702                 return (0);
1703         }
1704
1705         /* Allocate memory for FIFOS */
1706         cs->hw.hfcpci.fifos = pci_alloc_consistent(cs->hw.hfcpci.dev,
1707                                                    0x8000, &cs->hw.hfcpci.dma);
1708         if (!cs->hw.hfcpci.fifos) {
1709                 printk(KERN_WARNING "HFC-PCI: Error allocating FIFO memory!\n");
1710                 return 0;
1711         }
1712         if (cs->hw.hfcpci.dma & 0x7fff) {
1713                 printk(KERN_WARNING
1714                        "HFC-PCI: Error DMA memory not on 32K boundary (%lx)\n",
1715                        (u_long)cs->hw.hfcpci.dma);
1716                 pci_free_consistent(cs->hw.hfcpci.dev, 0x8000,
1717                                     cs->hw.hfcpci.fifos, cs->hw.hfcpci.dma);
1718                 return 0;
1719         }
1720         pci_write_config_dword(cs->hw.hfcpci.dev, 0x80, (u32)cs->hw.hfcpci.dma);
1721         cs->hw.hfcpci.pci_io = ioremap((ulong) cs->hw.hfcpci.pci_io, 256);
1722         printk(KERN_INFO
1723                "HFC-PCI: defined at mem %p fifo %p(%lx) IRQ %d HZ %d\n",
1724                cs->hw.hfcpci.pci_io,
1725                cs->hw.hfcpci.fifos,
1726                (u_long)cs->hw.hfcpci.dma,
1727                cs->irq, HZ);
1728
1729         spin_lock_irqsave(&cs->lock, flags);
1730
1731         pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, PCI_ENA_MEMIO);   /* enable memory mapped ports, disable busmaster */
1732         cs->hw.hfcpci.int_m2 = 0;       /* disable alle interrupts */
1733         cs->hw.hfcpci.int_m1 = 0;
1734         Write_hfc(cs, HFCPCI_INT_M1, cs->hw.hfcpci.int_m1);
1735         Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2);
1736         /* At this point the needed PCI config is done */
1737         /* fifos are still not enabled */
1738
1739         INIT_WORK(&cs->tqueue,  hfcpci_bh);
1740         cs->setstack_d = setstack_hfcpci;
1741         cs->BC_Send_Data = &hfcpci_send_data;
1742         cs->readisac = NULL;
1743         cs->writeisac = NULL;
1744         cs->readisacfifo = NULL;
1745         cs->writeisacfifo = NULL;
1746         cs->BC_Read_Reg = NULL;
1747         cs->BC_Write_Reg = NULL;
1748         cs->irq_func = &hfcpci_interrupt;
1749         cs->irq_flags |= IRQF_SHARED;
1750         timer_setup(&cs->hw.hfcpci.timer, hfcpci_Timer, 0);
1751         cs->cardmsg = &hfcpci_card_msg;
1752         cs->auxcmd = &hfcpci_auxcmd;
1753
1754         spin_unlock_irqrestore(&cs->lock, flags);
1755
1756         return (1);
1757 }