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   1 /******************************************************************************
   2          iphase.c: Device driver for Interphase ATM PCI adapter cards
   3                     Author: Peter Wang  <pwang@iphase.com>
   4                    Some fixes: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
   5                    Interphase Corporation  <www.iphase.com>
   6                                Version: 1.0
   7 *******************************************************************************
   8
   9       This software may be used and distributed according to the terms
  10       of the GNU General Public License (GPL), incorporated herein by reference.
  11       Drivers based on this skeleton fall under the GPL and must retain
  12       the authorship (implicit copyright) notice.
  13
  14       This program is distributed in the hope that it will be useful, but
  15       WITHOUT ANY WARRANTY; without even the implied warranty of
  16       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17       General Public License for more details.
  18
  19       Modified from an incomplete driver for Interphase 5575 1KVC 1M card which
  20       was originally written by Monalisa Agrawal at UNH. Now this driver
  21       supports a variety of varients of Interphase ATM PCI (i)Chip adapter
  22       card family (See www.iphase.com/products/ClassSheet.cfm?ClassID=ATM)
  23       in terms of PHY type, the size of control memory and the size of
  24       packet memory. The followings are the change log and history:
  25
  26           Bugfix the Mona's UBR driver.
  27           Modify the basic memory allocation and dma logic.
  28           Port the driver to the latest kernel from 2.0.46.
  29           Complete the ABR logic of the driver, and added the ABR work-
  30               around for the hardware anormalies.
  31           Add the CBR support.
  32           Add the flow control logic to the driver to allow rate-limit VC.
  33           Add 4K VC support to the board with 512K control memory.
  34           Add the support of all the variants of the Interphase ATM PCI
  35           (i)Chip adapter cards including x575 (155M OC3 and UTP155), x525
  36           (25M UTP25) and x531 (DS3 and E3).
  37           Add SMP support.
  38
  39       Support and updates available at: ftp://ftp.iphase.com/pub/atm
  40
  41 *******************************************************************************/
  42
  43 #include <linux/module.h>
  44 #include <linux/kernel.h>
  45 #include <linux/mm.h>
  46 #include <linux/pci.h>
  47 #include <linux/errno.h>
  48 #include <linux/atm.h>
  49 #include <linux/atmdev.h>
  50 #include <linux/sonet.h>
  51 #include <linux/skbuff.h>
  52 #include <linux/time.h>
  53 #include <linux/delay.h>
  54 #include <linux/uio.h>
  55 #include <linux/init.h>
  56 #include <linux/wait.h>
  57 #include <asm/system.h>
  58 #include <asm/io.h>
  59 #include <asm/atomic.h>
  60 #include <asm/uaccess.h>
  61 #include <asm/string.h>
  62 #include <asm/byteorder.h>
  63 #include <linux/vmalloc.h>
  64 #include "iphase.h"
  65 #include "suni.h"
  66 #define swap(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
  67 struct suni_priv {
  68         struct k_sonet_stats sonet_stats; /* link diagnostics */
  69         unsigned char loop_mode;        /* loopback mode */
  70         struct atm_dev *dev;            /* device back-pointer */
  71         struct suni_priv *next;         /* next SUNI */
  72 };
  73 #define PRIV(dev) ((struct suni_priv *) dev->phy_data)
  74
  75 static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
  76 static void desc_dbg(IADEV *iadev);
  77
  78 static IADEV *ia_dev[8];
  79 static struct atm_dev *_ia_dev[8];
  80 static int iadev_count;
  81 static void ia_led_timer(unsigned long arg);
  82 static DEFINE_TIMER(ia_timer, ia_led_timer, 0, 0);
  83 static int IA_TX_BUF = DFL_TX_BUFFERS, IA_TX_BUF_SZ = DFL_TX_BUF_SZ;
  84 static int IA_RX_BUF = DFL_RX_BUFFERS, IA_RX_BUF_SZ = DFL_RX_BUF_SZ;
  85 static uint IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
  86             |IF_IADBG_ABR | IF_IADBG_EVENT*/ 0;
  87
  88 module_param(IA_TX_BUF, int, 0);
  89 module_param(IA_TX_BUF_SZ, int, 0);
  90 module_param(IA_RX_BUF, int, 0);
  91 module_param(IA_RX_BUF_SZ, int, 0);
  92 module_param(IADebugFlag, uint, 0644);
  93
  94 MODULE_LICENSE("GPL");
  95
  96 #if BITS_PER_LONG != 32
  97 #  error FIXME: this driver only works on 32-bit platforms
  98 #endif
  99
 100 /**************************** IA_LIB **********************************/
 101
 102 static void ia_init_rtn_q (IARTN_Q *que)
 103 {
 104    que->next = NULL;
 105    que->tail = NULL;
 106 }
 107
 108 static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data)
 109 {
 110    data->next = NULL;
 111    if (que->next == NULL)
 112       que->next = que->tail = data;
 113    else {
 114       data->next = que->next;
 115       que->next = data;
 116    }
 117    return;
 118 }
 119
 120 static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
 121    IARTN_Q *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
 122    if (!entry) return -1;
 123    entry->data = data;
 124    entry->next = NULL;
 125    if (que->next == NULL)
 126       que->next = que->tail = entry;
 127    else {
 128       que->tail->next = entry;
 129       que->tail = que->tail->next;
 130    }
 131    return 1;
 132 }
 133
 134 static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
 135    IARTN_Q *tmpdata;
 136    if (que->next == NULL)
 137       return NULL;
 138    tmpdata = que->next;
 139    if ( que->next == que->tail)
 140       que->next = que->tail = NULL;
 141    else
 142       que->next = que->next->next;
 143    return tmpdata;
 144 }
 145
 146 static void ia_hack_tcq(IADEV *dev) {
 147
 148   u_short               desc1;
 149   u_short               tcq_wr;
 150   struct ia_vcc         *iavcc_r = NULL;
 151
 152   tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
 153   while (dev->host_tcq_wr != tcq_wr) {
 154      desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
 155      if (!desc1) ;
 156      else if (!dev->desc_tbl[desc1 -1].timestamp) {
 157         IF_ABR(printk(" Desc %d is reset at %ld\n", desc1 -1, jiffies);)
 158         *(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
 159      }
 160      else if (dev->desc_tbl[desc1 -1].timestamp) {
 161         if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) {
 162            printk("IA: Fatal err in get_desc\n");
 163            continue;
 164         }
 165         iavcc_r->vc_desc_cnt--;
 166         dev->desc_tbl[desc1 -1].timestamp = 0;
 167         IF_EVENT(printk("ia_hack: return_q skb = 0x%x desc = %d\n",
 168                                    (u32)dev->desc_tbl[desc1 -1].txskb, desc1);)
 169         if (iavcc_r->pcr < dev->rate_limit) {
 170            IA_SKB_STATE (dev->desc_tbl[desc1-1].txskb) |= IA_TX_DONE;
 171            if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1]) < 0)
 172               printk("ia_hack_tcq: No memory available\n");
 173         }
 174         dev->desc_tbl[desc1 -1].iavcc = NULL;
 175         dev->desc_tbl[desc1 -1].txskb = NULL;
 176      }
 177      dev->host_tcq_wr += 2;
 178      if (dev->host_tcq_wr > dev->ffL.tcq_ed)
 179         dev->host_tcq_wr = dev->ffL.tcq_st;
 180   }
 181 } /* ia_hack_tcq */
 182
 183 static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
 184   u_short               desc_num, i;
 185   struct sk_buff        *skb;
 186   struct ia_vcc         *iavcc_r = NULL;
 187   unsigned long delta;
 188   static unsigned long timer = 0;
 189   int ltimeout;
 190
 191   ia_hack_tcq (dev);
 192   if(((jiffies - timer)>50)||((dev->ffL.tcq_rd==dev->host_tcq_wr))){
 193      timer = jiffies;
 194      i=0;
 195      while (i < dev->num_tx_desc) {
 196         if (!dev->desc_tbl[i].timestamp) {
 197            i++;
 198            continue;
 199         }
 200         ltimeout = dev->desc_tbl[i].iavcc->ltimeout;
 201         delta = jiffies - dev->desc_tbl[i].timestamp;
 202         if (delta >= ltimeout) {
 203            IF_ABR(printk("RECOVER run!! desc_tbl %d = %d  delta = %ld, time = %ld\n", i,dev->desc_tbl[i].timestamp, delta, jiffies);)
 204            if (dev->ffL.tcq_rd == dev->ffL.tcq_st)
 205               dev->ffL.tcq_rd =  dev->ffL.tcq_ed;
 206            else
 207               dev->ffL.tcq_rd -= 2;
 208            *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
 209            if (!(skb = dev->desc_tbl[i].txskb) ||
 210                           !(iavcc_r = dev->desc_tbl[i].iavcc))
 211               printk("Fatal err, desc table vcc or skb is NULL\n");
 212            else
 213               iavcc_r->vc_desc_cnt--;
 214            dev->desc_tbl[i].timestamp = 0;
 215            dev->desc_tbl[i].iavcc = NULL;
 216            dev->desc_tbl[i].txskb = NULL;
 217         }
 218         i++;
 219      } /* while */
 220   }
 221   if (dev->ffL.tcq_rd == dev->host_tcq_wr)
 222      return 0xFFFF;
 223
 224   /* Get the next available descriptor number from TCQ */
 225   desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
 226
 227   while (!desc_num || (dev->desc_tbl[desc_num -1]).timestamp) {
 228      dev->ffL.tcq_rd += 2;
 229      if (dev->ffL.tcq_rd > dev->ffL.tcq_ed)
 230      dev->ffL.tcq_rd = dev->ffL.tcq_st;
 231      if (dev->ffL.tcq_rd == dev->host_tcq_wr)
 232         return 0xFFFF;
 233      desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
 234   }
 235
 236   /* get system time */
 237   dev->desc_tbl[desc_num -1].timestamp = jiffies;
 238   return desc_num;
 239 }
 240
 241 static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
 242   u_char                foundLockUp;
 243   vcstatus_t            *vcstatus;
 244   u_short               *shd_tbl;
 245   u_short               tempCellSlot, tempFract;
 246   struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
 247   struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
 248   u_int  i;
 249
 250   if (vcc->qos.txtp.traffic_class == ATM_ABR) {
 251      vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
 252      vcstatus->cnt++;
 253      foundLockUp = 0;
 254      if( vcstatus->cnt == 0x05 ) {
 255         abr_vc += vcc->vci;
 256         eabr_vc += vcc->vci;
 257         if( eabr_vc->last_desc ) {
 258            if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
 259               /* Wait for 10 Micro sec */
 260               udelay(10);
 261               if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==ABR_STATE))
 262                  foundLockUp = 1;
 263            }
 264            else {
 265               tempCellSlot = abr_vc->last_cell_slot;
 266               tempFract    = abr_vc->fraction;
 267               if((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
 268                          && (tempFract == dev->testTable[vcc->vci]->fract))
 269                  foundLockUp = 1;
 270               dev->testTable[vcc->vci]->lastTime = tempCellSlot;
 271               dev->testTable[vcc->vci]->fract = tempFract;
 272            }
 273         } /* last descriptor */
 274         vcstatus->cnt = 0;
 275      } /* vcstatus->cnt */
 276
 277      if (foundLockUp) {
 278         IF_ABR(printk("LOCK UP found\n");)
 279         writew(0xFFFD, dev->seg_reg+MODE_REG_0);
 280         /* Wait for 10 Micro sec */
 281         udelay(10);
 282         abr_vc->status &= 0xFFF8;
 283         abr_vc->status |= 0x0001;  /* state is idle */
 284         shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;
 285         for( i = 0; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
 286         if (i < dev->num_vc)
 287            shd_tbl[i] = vcc->vci;
 288         else
 289            IF_ERR(printk("ABR Seg. may not continue on VC %x\n",vcc->vci);)
 290         writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
 291         writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
 292         writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);
 293         vcstatus->cnt = 0;
 294      } /* foundLockUp */
 295
 296   } /* if an ABR VC */
 297
 298
 299 }
 300
 301 /*
 302 ** Conversion of 24-bit cellrate (cells/sec) to 16-bit floating point format.
 303 **
 304 **  +----+----+------------------+-------------------------------+
 305 **  |  R | NZ |  5-bit exponent  |        9-bit mantissa         |
 306 **  +----+----+------------------+-------------------------------+
 307 **
 308 **    R = reserved (written as 0)
 309 **    NZ = 0 if 0 cells/sec; 1 otherwise
 310 **
 311 **    if NZ = 1, rate = 1.mmmmmmmmm x 2^(eeeee) cells/sec
 312 */
 313 static u16
 314 cellrate_to_float(u32 cr)
 315 {
 316
 317 #define NZ              0x4000
 318 #define M_BITS          9               /* Number of bits in mantissa */
 319 #define E_BITS          5               /* Number of bits in exponent */
 320 #define M_MASK          0x1ff
 321 #define E_MASK          0x1f
 322   u16   flot;
 323   u32   tmp = cr & 0x00ffffff;
 324   int   i   = 0;
 325   if (cr == 0)
 326      return 0;
 327   while (tmp != 1) {
 328      tmp >>= 1;
 329      i++;
 330   }
 331   if (i == M_BITS)
 332      flot = NZ | (i << M_BITS) | (cr & M_MASK);
 333   else if (i < M_BITS)
 334      flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
 335   else
 336      flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
 337   return flot;
 338 }
 339
 340 #if 0
 341 /*
 342 ** Conversion of 16-bit floating point format to 24-bit cellrate (cells/sec).
 343 */
 344 static u32
 345 float_to_cellrate(u16 rate)
 346 {
 347   u32   exp, mantissa, cps;
 348   if ((rate & NZ) == 0)
 349      return 0;
 350   exp = (rate >> M_BITS) & E_MASK;
 351   mantissa = rate & M_MASK;
 352   if (exp == 0)
 353      return 1;
 354   cps = (1 << M_BITS) | mantissa;
 355   if (exp == M_BITS)
 356      cps = cps;
 357   else if (exp > M_BITS)
 358      cps <<= (exp - M_BITS);
 359   else
 360      cps >>= (M_BITS - exp);
 361   return cps;
 362 }
 363 #endif
 364
 365 static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
 366   srv_p->class_type = ATM_ABR;
 367   srv_p->pcr        = dev->LineRate;
 368   srv_p->mcr        = 0;
 369   srv_p->icr        = 0x055cb7;
 370   srv_p->tbe        = 0xffffff;
 371   srv_p->frtt       = 0x3a;
 372   srv_p->rif        = 0xf;
 373   srv_p->rdf        = 0xb;
 374   srv_p->nrm        = 0x4;
 375   srv_p->trm        = 0x7;
 376   srv_p->cdf        = 0x3;
 377   srv_p->adtf       = 50;
 378 }
 379
 380 static int
 381 ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p,
 382                                                 struct atm_vcc *vcc, u8 flag)
 383 {
 384   f_vc_abr_entry  *f_abr_vc;
 385   r_vc_abr_entry  *r_abr_vc;
 386   u32           icr;
 387   u8            trm, nrm, crm;
 388   u16           adtf, air, *ptr16;
 389   f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
 390   f_abr_vc += vcc->vci;
 391   switch (flag) {
 392      case 1: /* FFRED initialization */
 393 #if 0  /* sanity check */
 394        if (srv_p->pcr == 0)
 395           return INVALID_PCR;
 396        if (srv_p->pcr > dev->LineRate)
 397           srv_p->pcr = dev->LineRate;
 398        if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
 399           return MCR_UNAVAILABLE;
 400        if (srv_p->mcr > srv_p->pcr)
 401           return INVALID_MCR;
 402        if (!(srv_p->icr))
 403           srv_p->icr = srv_p->pcr;
 404        if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
 405           return INVALID_ICR;
 406        if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
 407           return INVALID_TBE;
 408        if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
 409           return INVALID_FRTT;
 410        if (srv_p->nrm > MAX_NRM)
 411           return INVALID_NRM;
 412        if (srv_p->trm > MAX_TRM)
 413           return INVALID_TRM;
 414        if (srv_p->adtf > MAX_ADTF)
 415           return INVALID_ADTF;
 416        else if (srv_p->adtf == 0)
 417           srv_p->adtf = 1;
 418        if (srv_p->cdf > MAX_CDF)
 419           return INVALID_CDF;
 420        if (srv_p->rif > MAX_RIF)
 421           return INVALID_RIF;
 422        if (srv_p->rdf > MAX_RDF)
 423           return INVALID_RDF;
 424 #endif
 425        memset ((caddr_t)f_abr_vc, 0, sizeof(*f_abr_vc));
 426        f_abr_vc->f_vc_type = ABR;
 427        nrm = 2 << srv_p->nrm;     /* (2 ** (srv_p->nrm +1)) */
 428                                   /* i.e 2**n = 2 << (n-1) */
 429        f_abr_vc->f_nrm = nrm << 8 | nrm;
 430        trm = 100000/(2 << (16 - srv_p->trm));
 431        if ( trm == 0) trm = 1;
 432        f_abr_vc->f_nrmexp =(((srv_p->nrm +1) & 0x0f) << 12)|(MRM << 8) | trm;
 433        crm = srv_p->tbe / nrm;
 434        if (crm == 0) crm = 1;
 435        f_abr_vc->f_crm = crm & 0xff;
 436        f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
 437        icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
 438                                 ((srv_p->tbe/srv_p->frtt)*1000000) :
 439                                 (1000000/(srv_p->frtt/srv_p->tbe)));
 440        f_abr_vc->f_icr = cellrate_to_float(icr);
 441        adtf = (10000 * srv_p->adtf)/8192;
 442        if (adtf == 0) adtf = 1;
 443        f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0xfff;
 444        f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
 445        f_abr_vc->f_acr = f_abr_vc->f_icr;
 446        f_abr_vc->f_status = 0x0042;
 447        break;
 448     case 0: /* RFRED initialization */
 449        ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize);
 450        *(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
 451        r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
 452        r_abr_vc += vcc->vci;
 453        r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0x000f;
 454        air = srv_p->pcr << (15 - srv_p->rif);
 455        if (air == 0) air = 1;
 456        r_abr_vc->r_air = cellrate_to_float(air);
 457        dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
 458        dev->sum_mcr        += srv_p->mcr;
 459        dev->n_abr++;
 460        break;
 461     default:
 462        break;
 463   }
 464   return        0;
 465 }
 466 static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
 467    u32 rateLow=0, rateHigh, rate;
 468    int entries;
 469    struct ia_vcc *ia_vcc;
 470
 471    int   idealSlot =0, testSlot, toBeAssigned, inc;
 472    u32   spacing;
 473    u16  *SchedTbl, *TstSchedTbl;
 474    u16  cbrVC, vcIndex;
 475    u32   fracSlot    = 0;
 476    u32   sp_mod      = 0;
 477    u32   sp_mod2     = 0;
 478
 479    /* IpAdjustTrafficParams */
 480    if (vcc->qos.txtp.max_pcr <= 0) {
 481       IF_ERR(printk("PCR for CBR not defined\n");)
 482       return -1;
 483    }
 484    rate = vcc->qos.txtp.max_pcr;
 485    entries = rate / dev->Granularity;
 486    IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n",
 487                                 entries, rate, dev->Granularity);)
 488    if (entries < 1)
 489       IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n");)
 490    rateLow  =  entries * dev->Granularity;
 491    rateHigh = (entries + 1) * dev->Granularity;
 492    if (3*(rate - rateLow) > (rateHigh - rate))
 493       entries++;
 494    if (entries > dev->CbrRemEntries) {
 495       IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n");)
 496       IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n",
 497                                        entries, dev->CbrRemEntries);)
 498       return -EBUSY;
 499    }
 500
 501    ia_vcc = INPH_IA_VCC(vcc);
 502    ia_vcc->NumCbrEntry = entries;
 503    dev->sum_mcr += entries * dev->Granularity;
 504    /* IaFFrednInsertCbrSched */
 505    // Starting at an arbitrary location, place the entries into the table
 506    // as smoothly as possible
 507    cbrVC   = 0;
 508    spacing = dev->CbrTotEntries / entries;
 509    sp_mod  = dev->CbrTotEntries % entries; // get modulo
 510    toBeAssigned = entries;
 511    fracSlot = 0;
 512    vcIndex  = vcc->vci;
 513    IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n",vcIndex,spacing,sp_mod);)
 514    while (toBeAssigned)
 515    {
 516       // If this is the first time, start the table loading for this connection
 517       // as close to entryPoint as possible.
 518       if (toBeAssigned == entries)
 519       {
 520          idealSlot = dev->CbrEntryPt;
 521          dev->CbrEntryPt += 2;    // Adding 2 helps to prevent clumping
 522          if (dev->CbrEntryPt >= dev->CbrTotEntries)
 523             dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
 524       } else {
 525          idealSlot += (u32)(spacing + fracSlot); // Point to the next location
 526          // in the table that would be  smoothest
 527          fracSlot = ((sp_mod + sp_mod2) / entries);  // get new integer part
 528          sp_mod2  = ((sp_mod + sp_mod2) % entries);  // calc new fractional part
 529       }
 530       if (idealSlot >= (int)dev->CbrTotEntries)
 531          idealSlot -= dev->CbrTotEntries;
 532       // Continuously check around this ideal value until a null
 533       // location is encountered.
 534       SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize);
 535       inc = 0;
 536       testSlot = idealSlot;
 537       TstSchedTbl = (u16*)(SchedTbl+testSlot);  //set index and read in value
 538       IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%x, NumToAssign=%d\n",
 539                                 testSlot, (u32)TstSchedTbl,toBeAssigned);)
 540       memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
 541       while (cbrVC)  // If another VC at this location, we have to keep looking
 542       {
 543           inc++;
 544           testSlot = idealSlot - inc;
 545           if (testSlot < 0) { // Wrap if necessary
 546              testSlot += dev->CbrTotEntries;
 547              IF_CBR(printk("Testslot Wrap. STable Start=0x%x,Testslot=%d\n",
 548                                                        (u32)SchedTbl,testSlot);)
 549           }
 550           TstSchedTbl = (u16 *)(SchedTbl + testSlot);  // set table index
 551           memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
 552           if (!cbrVC)
 553              break;
 554           testSlot = idealSlot + inc;
 555           if (testSlot >= (int)dev->CbrTotEntries) { // Wrap if necessary
 556              testSlot -= dev->CbrTotEntries;
 557              IF_CBR(printk("TotCbrEntries=%d",dev->CbrTotEntries);)
 558              IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n",
 559                                             testSlot, toBeAssigned);)
 560           }
 561           // set table index and read in value
 562           TstSchedTbl = (u16*)(SchedTbl + testSlot);
 563           IF_CBR(printk("Reading CBR Tbl from 0x%x, CbrVal=0x%x Iteration %d\n",
 564                           (u32)TstSchedTbl,cbrVC,inc);)
 565           memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof(cbrVC));
 566        } /* while */
 567        // Move this VCI number into this location of the CBR Sched table.
 568        memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex,sizeof(TstSchedTbl));
 569        dev->CbrRemEntries--;
 570        toBeAssigned--;
 571    } /* while */
 572
 573    /* IaFFrednCbrEnable */
 574    dev->NumEnabledCBR++;
 575    if (dev->NumEnabledCBR == 1) {
 576        writew((CBR_EN | UBR_EN | ABR_EN | (0x23 << 2)), dev->seg_reg+STPARMS);
 577        IF_CBR(printk("CBR is enabled\n");)
 578    }
 579    return 0;
 580 }
 581 static void ia_cbrVc_close (struct atm_vcc *vcc) {
 582    IADEV *iadev;
 583    u16 *SchedTbl, NullVci = 0;
 584    u32 i, NumFound;
 585
 586    iadev = INPH_IA_DEV(vcc->dev);
 587    iadev->NumEnabledCBR--;
 588    SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
 589    if (iadev->NumEnabledCBR == 0) {
 590       writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
 591       IF_CBR (printk("CBR support disabled\n");)
 592    }
 593    NumFound = 0;
 594    for (i=0; i < iadev->CbrTotEntries; i++)
 595    {
 596       if (*SchedTbl == vcc->vci) {
 597          iadev->CbrRemEntries++;
 598          *SchedTbl = NullVci;
 599          IF_CBR(NumFound++;)
 600       }
 601       SchedTbl++;
 602    }
 603    IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n",NumFound);)
 604 }
 605
 606 static int ia_avail_descs(IADEV *iadev) {
 607    int tmp = 0;
 608    ia_hack_tcq(iadev);
 609    if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
 610       tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2;
 611    else
 612       tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
 613                    iadev->ffL.tcq_st) / 2;
 614    return tmp;
 615 }
 616
 617 static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
 618
 619 static int ia_que_tx (IADEV *iadev) {
 620    struct sk_buff *skb;
 621    int num_desc;
 622    struct atm_vcc *vcc;
 623    struct ia_vcc *iavcc;
 624    num_desc = ia_avail_descs(iadev);
 625
 626    while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
 627       if (!(vcc = ATM_SKB(skb)->vcc)) {
 628          dev_kfree_skb_any(skb);
 629          printk("ia_que_tx: Null vcc\n");
 630          break;
 631       }
 632       if (!test_bit(ATM_VF_READY,&vcc->flags)) {
 633          dev_kfree_skb_any(skb);
 634          printk("Free the SKB on closed vci %d \n", vcc->vci);
 635          break;
 636       }
 637       iavcc = INPH_IA_VCC(vcc);
 638       if (ia_pkt_tx (vcc, skb)) {
 639          skb_queue_head(&iadev->tx_backlog, skb);
 640       }
 641       num_desc--;
 642    }
 643    return 0;
 644 }
 645
 646 static void ia_tx_poll (IADEV *iadev) {
 647    struct atm_vcc *vcc = NULL;
 648    struct sk_buff *skb = NULL, *skb1 = NULL;
 649    struct ia_vcc *iavcc;
 650    IARTN_Q *  rtne;
 651
 652    ia_hack_tcq(iadev);
 653    while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
 654        skb = rtne->data.txskb;
 655        if (!skb) {
 656            printk("ia_tx_poll: skb is null\n");
 657            goto out;
 658        }
 659        vcc = ATM_SKB(skb)->vcc;
 660        if (!vcc) {
 661            printk("ia_tx_poll: vcc is null\n");
 662            dev_kfree_skb_any(skb);
 663            goto out;
 664        }
 665
 666        iavcc = INPH_IA_VCC(vcc);
 667        if (!iavcc) {
 668            printk("ia_tx_poll: iavcc is null\n");
 669            dev_kfree_skb_any(skb);
 670            goto out;
 671        }
 672
 673        skb1 = skb_dequeue(&iavcc->txing_skb);
 674        while (skb1 && (skb1 != skb)) {
 675           if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
 676              printk("IA_tx_intr: Vci %d lost pkt!!!\n", vcc->vci);
 677           }
 678           IF_ERR(printk("Release the SKB not match\n");)
 679           if ((vcc->pop) && (skb1->len != 0))
 680           {
 681              vcc->pop(vcc, skb1);
 682              IF_EVENT(printk("Tansmit Done - skb 0x%lx return\n",
 683                                                           (long)skb1);)
 684           }
 685           else
 686              dev_kfree_skb_any(skb1);
 687           skb1 = skb_dequeue(&iavcc->txing_skb);
 688        }
 689        if (!skb1) {
 690           IF_EVENT(printk("IA: Vci %d - skb not found requed\n",vcc->vci);)
 691           ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
 692           break;
 693        }
 694        if ((vcc->pop) && (skb->len != 0))
 695        {
 696           vcc->pop(vcc, skb);
 697           IF_EVENT(printk("Tx Done - skb 0x%lx return\n",(long)skb);)
 698        }
 699        else
 700           dev_kfree_skb_any(skb);
 701        kfree(rtne);
 702     }
 703     ia_que_tx(iadev);
 704 out:
 705     return;
 706 }
 707 #if 0
 708 static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
 709 {
 710         u32     t;
 711         int     i;
 712         /*
 713          * Issue a command to enable writes to the NOVRAM
 714          */
 715         NVRAM_CMD (EXTEND + EWEN);
 716         NVRAM_CLR_CE;
 717         /*
 718          * issue the write command
 719          */
 720         NVRAM_CMD(IAWRITE + addr);
 721         /*
 722          * Send the data, starting with D15, then D14, and so on for 16 bits
 723          */
 724         for (i=15; i>=0; i--) {
 725                 NVRAM_CLKOUT (val & 0x8000);
 726                 val <<= 1;
 727         }
 728         NVRAM_CLR_CE;
 729         CFG_OR(NVCE);
 730         t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
 731         while (!(t & NVDO))
 732                 t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
 733
 734         NVRAM_CLR_CE;
 735         /*
 736          * disable writes again
 737          */
 738         NVRAM_CMD(EXTEND + EWDS)
 739         NVRAM_CLR_CE;
 740         CFG_AND(~NVDI);
 741 }
 742 #endif
 743
 744 static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
 745 {
 746         u_short val;
 747         u32     t;
 748         int     i;
 749         /*
 750          * Read the first bit that was clocked with the falling edge of the
 751          * the last command data clock
 752          */
 753         NVRAM_CMD(IAREAD + addr);
 754         /*
 755          * Now read the rest of the bits, the next bit read is D14, then D13,
 756          * and so on.
 757          */
 758         val = 0;
 759         for (i=15; i>=0; i--) {
 760                 NVRAM_CLKIN(t);
 761                 val |= (t << i);
 762         }
 763         NVRAM_CLR_CE;
 764         CFG_AND(~NVDI);
 765         return val;
 766 }
 767
 768 static void ia_hw_type(IADEV *iadev) {
 769    u_short memType = ia_eeprom_get(iadev, 25);
 770    iadev->memType = memType;
 771    if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
 772       iadev->num_tx_desc = IA_TX_BUF;
 773       iadev->tx_buf_sz = IA_TX_BUF_SZ;
 774       iadev->num_rx_desc = IA_RX_BUF;
 775       iadev->rx_buf_sz = IA_RX_BUF_SZ;
 776    } else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
 777       if (IA_TX_BUF == DFL_TX_BUFFERS)
 778         iadev->num_tx_desc = IA_TX_BUF / 2;
 779       else
 780         iadev->num_tx_desc = IA_TX_BUF;
 781       iadev->tx_buf_sz = IA_TX_BUF_SZ;
 782       if (IA_RX_BUF == DFL_RX_BUFFERS)
 783         iadev->num_rx_desc = IA_RX_BUF / 2;
 784       else
 785         iadev->num_rx_desc = IA_RX_BUF;
 786       iadev->rx_buf_sz = IA_RX_BUF_SZ;
 787    }
 788    else {
 789       if (IA_TX_BUF == DFL_TX_BUFFERS)
 790         iadev->num_tx_desc = IA_TX_BUF / 8;
 791       else
 792         iadev->num_tx_desc = IA_TX_BUF;
 793       iadev->tx_buf_sz = IA_TX_BUF_SZ;
 794       if (IA_RX_BUF == DFL_RX_BUFFERS)
 795         iadev->num_rx_desc = IA_RX_BUF / 8;
 796       else
 797         iadev->num_rx_desc = IA_RX_BUF;
 798       iadev->rx_buf_sz = IA_RX_BUF_SZ;
 799    }
 800    iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz);
 801    IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n",
 802          iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
 803          iadev->rx_buf_sz, iadev->rx_pkt_ram);)
 804
 805 #if 0
 806    if ((memType & FE_MASK) == FE_SINGLE_MODE) {
 807       iadev->phy_type = PHY_OC3C_S;
 808    else if ((memType & FE_MASK) == FE_UTP_OPTION)
 809       iadev->phy_type = PHY_UTP155;
 810    else
 811      iadev->phy_type = PHY_OC3C_M;
 812 #endif
 813
 814    iadev->phy_type = memType & FE_MASK;
 815    IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n",
 816                                          memType,iadev->phy_type);)
 817    if (iadev->phy_type == FE_25MBIT_PHY)
 818       iadev->LineRate = (u32)(((25600000/8)*26)/(27*53));
 819    else if (iadev->phy_type == FE_DS3_PHY)
 820       iadev->LineRate = (u32)(((44736000/8)*26)/(27*53));
 821    else if (iadev->phy_type == FE_E3_PHY)
 822       iadev->LineRate = (u32)(((34368000/8)*26)/(27*53));
 823    else
 824        iadev->LineRate = (u32)(ATM_OC3_PCR);
 825    IF_INIT(printk("iadev->LineRate = %d \n", iadev->LineRate);)
 826
 827 }
 828
 829 static void IaFrontEndIntr(IADEV *iadev) {
 830   volatile IA_SUNI *suni;
 831   volatile ia_mb25_t *mb25;
 832   volatile suni_pm7345_t *suni_pm7345;
 833   u32 intr_status;
 834   u_int frmr_intr;
 835
 836   if(iadev->phy_type & FE_25MBIT_PHY) {
 837      mb25 = (ia_mb25_t*)iadev->phy;
 838      iadev->carrier_detect =  Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
 839   } else if (iadev->phy_type & FE_DS3_PHY) {
 840      suni_pm7345 = (suni_pm7345_t *)iadev->phy;
 841      /* clear FRMR interrupts */
 842      frmr_intr   = suni_pm7345->suni_ds3_frm_intr_stat;
 843      iadev->carrier_detect =
 844            Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
 845   } else if (iadev->phy_type & FE_E3_PHY ) {
 846      suni_pm7345 = (suni_pm7345_t *)iadev->phy;
 847      frmr_intr   = suni_pm7345->suni_e3_frm_maint_intr_ind;
 848      iadev->carrier_detect =
 849            Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat&SUNI_E3_LOS));
 850   }
 851   else {
 852      suni = (IA_SUNI *)iadev->phy;
 853      intr_status = suni->suni_rsop_status & 0xff;
 854      iadev->carrier_detect = Boolean(!(suni->suni_rsop_status & SUNI_LOSV));
 855   }
 856   if (iadev->carrier_detect)
 857     printk("IA: SUNI carrier detected\n");
 858   else
 859     printk("IA: SUNI carrier lost signal\n");
 860   return;
 861 }
 862
 863 static void ia_mb25_init (IADEV *iadev)
 864 {
 865    volatile ia_mb25_t  *mb25 = (ia_mb25_t*)iadev->phy;
 866 #if 0
 867    mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
 868 #endif
 869    mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC;
 870    mb25->mb25_diag_control = 0;
 871    /*
 872     * Initialize carrier detect state
 873     */
 874    iadev->carrier_detect =  Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
 875    return;
 876 }
 877
 878 static void ia_suni_pm7345_init (IADEV *iadev)
 879 {
 880    volatile suni_pm7345_t *suni_pm7345 = (suni_pm7345_t *)iadev->phy;
 881    if (iadev->phy_type & FE_DS3_PHY)
 882    {
 883       iadev->carrier_detect =
 884           Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
 885       suni_pm7345->suni_ds3_frm_intr_enbl = 0x17;
 886       suni_pm7345->suni_ds3_frm_cfg = 1;
 887       suni_pm7345->suni_ds3_tran_cfg = 1;
 888       suni_pm7345->suni_config = 0;
 889       suni_pm7345->suni_splr_cfg = 0;
 890       suni_pm7345->suni_splt_cfg = 0;
 891    }
 892    else
 893    {
 894       iadev->carrier_detect =
 895           Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat & SUNI_E3_LOS));
 896       suni_pm7345->suni_e3_frm_fram_options = 0x4;
 897       suni_pm7345->suni_e3_frm_maint_options = 0x20;
 898       suni_pm7345->suni_e3_frm_fram_intr_enbl = 0x1d;
 899       suni_pm7345->suni_e3_frm_maint_intr_enbl = 0x30;
 900       suni_pm7345->suni_e3_tran_stat_diag_options = 0x0;
 901       suni_pm7345->suni_e3_tran_fram_options = 0x1;
 902       suni_pm7345->suni_config = SUNI_PM7345_E3ENBL;
 903       suni_pm7345->suni_splr_cfg = 0x41;
 904       suni_pm7345->suni_splt_cfg = 0x41;
 905    }
 906    /*
 907     * Enable RSOP loss of signal interrupt.
 908     */
 909    suni_pm7345->suni_intr_enbl = 0x28;
 910
 911    /*
 912     * Clear error counters
 913     */
 914    suni_pm7345->suni_id_reset = 0;
 915
 916    /*
 917     * Clear "PMCTST" in master test register.
 918     */
 919    suni_pm7345->suni_master_test = 0;
 920
 921    suni_pm7345->suni_rxcp_ctrl = 0x2c;
 922    suni_pm7345->suni_rxcp_fctrl = 0x81;
 923
 924    suni_pm7345->suni_rxcp_idle_pat_h1 =
 925         suni_pm7345->suni_rxcp_idle_pat_h2 =
 926         suni_pm7345->suni_rxcp_idle_pat_h3 = 0;
 927    suni_pm7345->suni_rxcp_idle_pat_h4 = 1;
 928
 929    suni_pm7345->suni_rxcp_idle_mask_h1 = 0xff;
 930    suni_pm7345->suni_rxcp_idle_mask_h2 = 0xff;
 931    suni_pm7345->suni_rxcp_idle_mask_h3 = 0xff;
 932    suni_pm7345->suni_rxcp_idle_mask_h4 = 0xfe;
 933
 934    suni_pm7345->suni_rxcp_cell_pat_h1 =
 935         suni_pm7345->suni_rxcp_cell_pat_h2 =
 936         suni_pm7345->suni_rxcp_cell_pat_h3 = 0;
 937    suni_pm7345->suni_rxcp_cell_pat_h4 = 1;
 938
 939    suni_pm7345->suni_rxcp_cell_mask_h1 =
 940         suni_pm7345->suni_rxcp_cell_mask_h2 =
 941         suni_pm7345->suni_rxcp_cell_mask_h3 =
 942         suni_pm7345->suni_rxcp_cell_mask_h4 = 0xff;
 943
 944    suni_pm7345->suni_txcp_ctrl = 0xa4;
 945    suni_pm7345->suni_txcp_intr_en_sts = 0x10;
 946    suni_pm7345->suni_txcp_idle_pat_h5 = 0x55;
 947
 948    suni_pm7345->suni_config &= ~(SUNI_PM7345_LLB |
 949                                  SUNI_PM7345_CLB |
 950                                  SUNI_PM7345_DLB |
 951                                   SUNI_PM7345_PLB);
 952 #ifdef __SNMP__
 953    suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
 954 #endif /* __SNMP__ */
 955    return;
 956 }
 957
 958
 959 /***************************** IA_LIB END *****************************/
 960
 961 static int tcnter = 0;
 962 static void xdump( u_char*  cp, int  length, char*  prefix )
 963 {
 964     int col, count;
 965     u_char prntBuf[120];
 966     u_char*  pBuf = prntBuf;
 967     count = 0;
 968     while(count < length){
 969         pBuf += sprintf( pBuf, "%s", prefix );
 970         for(col = 0;count + col < length && col < 16; col++){
 971             if (col != 0 && (col % 4) == 0)
 972                 pBuf += sprintf( pBuf, " " );
 973             pBuf += sprintf( pBuf, "%02X ", cp[count + col] );
 974         }
 975         while(col++ < 16){      /* pad end of buffer with blanks */
 976             if ((col % 4) == 0)
 977                 sprintf( pBuf, " " );
 978             pBuf += sprintf( pBuf, "   " );
 979         }
 980         pBuf += sprintf( pBuf, "  " );
 981         for(col = 0;count + col < length && col < 16; col++){
 982             if (isprint((int)cp[count + col]))
 983                 pBuf += sprintf( pBuf, "%c", cp[count + col] );
 984             else
 985                 pBuf += sprintf( pBuf, "." );
 986                 }
 987         sprintf( pBuf, "\n" );
 988         // SPrint(prntBuf);
 989         printk(prntBuf);
 990         count += col;
 991         pBuf = prntBuf;
 992     }
 993
 994 }  /* close xdump(... */
 995
 996
 997 static struct atm_dev *ia_boards = NULL;
 998
 999 #define ACTUAL_RAM_BASE \
1000         RAM_BASE*((iadev->mem)/(128 * 1024))
1001 #define ACTUAL_SEG_RAM_BASE \
1002         IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1003 #define ACTUAL_REASS_RAM_BASE \
1004         IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024))
1005
1006
1007 /*-- some utilities and memory allocation stuff will come here -------------*/
1008
1009 static void desc_dbg(IADEV *iadev) {
1010
1011   u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
1012   u32 i;
1013   void __iomem *tmp;
1014   // regval = readl((u32)ia_cmds->maddr);
1015   tcq_wr_ptr =  readw(iadev->seg_reg+TCQ_WR_PTR);
1016   printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n",
1017                      tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
1018                      readw(iadev->seg_ram+tcq_wr_ptr-2));
1019   printk(" host_tcq_wr = 0x%x  host_tcq_rd = 0x%x \n",  iadev->host_tcq_wr,
1020                    iadev->ffL.tcq_rd);
1021   tcq_st_ptr =  readw(iadev->seg_reg+TCQ_ST_ADR);
1022   tcq_ed_ptr =  readw(iadev->seg_reg+TCQ_ED_ADR);
1023   printk("tcq_st_ptr = 0x%x    tcq_ed_ptr = 0x%x \n", tcq_st_ptr, tcq_ed_ptr);
1024   i = 0;
1025   while (tcq_st_ptr != tcq_ed_ptr) {
1026       tmp = iadev->seg_ram+tcq_st_ptr;
1027       printk("TCQ slot %d desc = %d  Addr = %p\n", i++, readw(tmp), tmp);
1028       tcq_st_ptr += 2;
1029   }
1030   for(i=0; i <iadev->num_tx_desc; i++)
1031       printk("Desc_tbl[%d] = %d \n", i, iadev->desc_tbl[i].timestamp);
1032 }
1033
1034
1035 /*----------------------------- Recieving side stuff --------------------------*/
1036
1037 static void rx_excp_rcvd(struct atm_dev *dev)
1038 {
1039 #if 0 /* closing the receiving size will cause too many excp int */
1040   IADEV *iadev;
1041   u_short state;
1042   u_short excpq_rd_ptr;
1043   //u_short *ptr;
1044   int vci, error = 1;
1045   iadev = INPH_IA_DEV(dev);
1046   state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1047   while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
1048   { printk("state = %x \n", state);
1049         excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;
1050  printk("state = %x excpq_rd_ptr = %x \n", state, excpq_rd_ptr);
1051         if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
1052             IF_ERR(printk("excpq_rd_ptr is wrong!!!\n");)
1053         // TODO: update exception stat
1054         vci = readw(iadev->reass_ram+excpq_rd_ptr);
1055         error = readw(iadev->reass_ram+excpq_rd_ptr+2) & 0x0007;
1056         // pwang_test
1057         excpq_rd_ptr += 4;
1058         if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))
1059             excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
1060         writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
1061         state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1062   }
1063 #endif
1064 }
1065
1066 static void free_desc(struct atm_dev *dev, int desc)
1067 {
1068         IADEV *iadev;
1069         iadev = INPH_IA_DEV(dev);
1070         writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr);
1071         iadev->rfL.fdq_wr +=2;
1072         if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
1073                 iadev->rfL.fdq_wr =  iadev->rfL.fdq_st;
1074         writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);
1075 }
1076
1077
1078 static int rx_pkt(struct atm_dev *dev)
1079 {
1080         IADEV *iadev;
1081         struct atm_vcc *vcc;
1082         unsigned short status;
1083         struct rx_buf_desc __iomem *buf_desc_ptr;
1084         int desc;
1085         struct dle* wr_ptr;
1086         int len;
1087         struct sk_buff *skb;
1088         u_int buf_addr, dma_addr;
1089
1090         iadev = INPH_IA_DEV(dev);
1091         if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff))
1092         {
1093             printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n", dev->number);
1094             return -EINVAL;
1095         }
1096         /* mask 1st 3 bits to get the actual descno. */
1097         desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;
1098         IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n",
1099                                     iadev->reass_ram, iadev->rfL.pcq_rd, desc);
1100               printk(" pcq_wr_ptr = 0x%x\n",
1101                                readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
1102         /* update the read pointer  - maybe we shud do this in the end*/
1103         if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed)
1104                 iadev->rfL.pcq_rd = iadev->rfL.pcq_st;
1105         else
1106                 iadev->rfL.pcq_rd += 2;
1107         writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);
1108
1109         /* get the buffer desc entry.
1110                 update stuff. - doesn't seem to be any update necessary
1111         */
1112         buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1113         /* make the ptr point to the corresponding buffer desc entry */
1114         buf_desc_ptr += desc;
1115         if (!desc || (desc > iadev->num_rx_desc) ||
1116                       ((buf_desc_ptr->vc_index & 0xffff) > iadev->num_vc)) {
1117             free_desc(dev, desc);
1118             IF_ERR(printk("IA: bad descriptor desc = %d \n", desc);)
1119             return -1;
1120         }
1121         vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0xffff];
1122         if (!vcc)
1123         {
1124                 free_desc(dev, desc);
1125                 printk("IA: null vcc, drop PDU\n");
1126                 return -1;
1127         }
1128
1129
1130         /* might want to check the status bits for errors */
1131         status = (u_short) (buf_desc_ptr->desc_mode);
1132         if (status & (RX_CER | RX_PTE | RX_OFL))
1133         {
1134                 atomic_inc(&vcc->stats->rx_err);
1135                 IF_ERR(printk("IA: bad packet, dropping it");)
1136                 if (status & RX_CER) {
1137                     IF_ERR(printk(" cause: packet CRC error\n");)
1138                 }
1139                 else if (status & RX_PTE) {
1140                     IF_ERR(printk(" cause: packet time out\n");)
1141                 }
1142                 else {
1143                     IF_ERR(printk(" cause: buffer over flow\n");)
1144                 }
1145                 goto out_free_desc;
1146         }
1147
1148         /*
1149                 build DLE.
1150         */
1151
1152         buf_addr = (buf_desc_ptr->buf_start_hi << 16) | buf_desc_ptr->buf_start_lo;
1153         dma_addr = (buf_desc_ptr->dma_start_hi << 16) | buf_desc_ptr->dma_start_lo;
1154         len = dma_addr - buf_addr;
1155         if (len > iadev->rx_buf_sz) {
1156            printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
1157            atomic_inc(&vcc->stats->rx_err);
1158            goto out_free_desc;
1159         }
1160
1161         if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
1162            if (vcc->vci < 32)
1163               printk("Drop control packets\n");
1164               goto out_free_desc;
1165         }
1166         skb_put(skb,len);
1167         // pwang_test
1168         ATM_SKB(skb)->vcc = vcc;
1169         ATM_DESC(skb) = desc;
1170         skb_queue_tail(&iadev->rx_dma_q, skb);
1171
1172         /* Build the DLE structure */
1173         wr_ptr = iadev->rx_dle_q.write;
1174         wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
1175                 len, PCI_DMA_FROMDEVICE);
1176         wr_ptr->local_pkt_addr = buf_addr;
1177         wr_ptr->bytes = len;    /* We don't know this do we ?? */
1178         wr_ptr->mode = DMA_INT_ENABLE;
1179
1180         /* shud take care of wrap around here too. */
1181         if(++wr_ptr == iadev->rx_dle_q.end)
1182              wr_ptr = iadev->rx_dle_q.start;
1183         iadev->rx_dle_q.write = wr_ptr;
1184         udelay(1);
1185         /* Increment transaction counter */
1186         writel(1, iadev->dma+IPHASE5575_RX_COUNTER);
1187 out:    return 0;
1188 out_free_desc:
1189         free_desc(dev, desc);
1190         goto out;
1191 }
1192
1193 static void rx_intr(struct atm_dev *dev)
1194 {
1195   IADEV *iadev;
1196   u_short status;
1197   u_short state, i;
1198
1199   iadev = INPH_IA_DEV(dev);
1200   status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0xffff;
1201   IF_EVENT(printk("rx_intr: status = 0x%x\n", status);)
1202   if (status & RX_PKT_RCVD)
1203   {
1204         /* do something */
1205         /* Basically recvd an interrupt for receving a packet.
1206         A descriptor would have been written to the packet complete
1207         queue. Get all the descriptors and set up dma to move the
1208         packets till the packet complete queue is empty..
1209         */
1210         state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1211         IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n", status);)
1212         while(!(state & PCQ_EMPTY))
1213         {
1214              rx_pkt(dev);
1215              state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1216         }
1217         iadev->rxing = 1;
1218   }
1219   if (status & RX_FREEQ_EMPT)
1220   {
1221      if (iadev->rxing) {
1222         iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
1223         iadev->rx_tmp_jif = jiffies;
1224         iadev->rxing = 0;
1225      }
1226      else if (((jiffies - iadev->rx_tmp_jif) > 50) &&
1227                ((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0)) {
1228         for (i = 1; i <= iadev->num_rx_desc; i++)
1229                free_desc(dev, i);
1230 printk("Test logic RUN!!!!\n");
1231         writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
1232         iadev->rxing = 1;
1233      }
1234      IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n", status);)
1235   }
1236
1237   if (status & RX_EXCP_RCVD)
1238   {
1239         /* probably need to handle the exception queue also. */
1240         IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n", status);)
1241         rx_excp_rcvd(dev);
1242   }
1243
1244
1245   if (status & RX_RAW_RCVD)
1246   {
1247         /* need to handle the raw incoming cells. This deepnds on
1248         whether we have programmed to receive the raw cells or not.
1249         Else ignore. */
1250         IF_EVENT(printk("Rx intr status:  RX_RAW_RCVD %08x\n", status);)
1251   }
1252 }
1253
1254
1255 static void rx_dle_intr(struct atm_dev *dev)
1256 {
1257   IADEV *iadev;
1258   struct atm_vcc *vcc;
1259   struct sk_buff *skb;
1260   int desc;
1261   u_short state;
1262   struct dle *dle, *cur_dle;
1263   u_int dle_lp;
1264   int len;
1265   iadev = INPH_IA_DEV(dev);
1266
1267   /* free all the dles done, that is just update our own dle read pointer
1268         - do we really need to do this. Think not. */
1269   /* DMA is done, just get all the recevie buffers from the rx dma queue
1270         and push them up to the higher layer protocol. Also free the desc
1271         associated with the buffer. */
1272   dle = iadev->rx_dle_q.read;
1273   dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof(struct dle)*DLE_ENTRIES - 1);
1274   cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4));
1275   while(dle != cur_dle)
1276   {
1277       /* free the DMAed skb */
1278       skb = skb_dequeue(&iadev->rx_dma_q);
1279       if (!skb)
1280          goto INCR_DLE;
1281       desc = ATM_DESC(skb);
1282       free_desc(dev, desc);
1283
1284       if (!(len = skb->len))
1285       {
1286           printk("rx_dle_intr: skb len 0\n");
1287           dev_kfree_skb_any(skb);
1288       }
1289       else
1290       {
1291           struct cpcs_trailer *trailer;
1292           u_short length;
1293           struct ia_vcc *ia_vcc;
1294
1295           pci_unmap_single(iadev->pci, iadev->rx_dle_q.write->sys_pkt_addr,
1296                 len, PCI_DMA_FROMDEVICE);
1297           /* no VCC related housekeeping done as yet. lets see */
1298           vcc = ATM_SKB(skb)->vcc;
1299           if (!vcc) {
1300               printk("IA: null vcc\n");
1301               dev_kfree_skb_any(skb);
1302               goto INCR_DLE;
1303           }
1304           ia_vcc = INPH_IA_VCC(vcc);
1305           if (ia_vcc == NULL)
1306           {
1307              atomic_inc(&vcc->stats->rx_err);
1308              dev_kfree_skb_any(skb);
1309              atm_return(vcc, atm_guess_pdu2truesize(len));
1310              goto INCR_DLE;
1311            }
1312           // get real pkt length  pwang_test
1313           trailer = (struct cpcs_trailer*)((u_char *)skb->data +
1314                                  skb->len - sizeof(*trailer));
1315           length =  swap(trailer->length);
1316           if ((length > iadev->rx_buf_sz) || (length >
1317                               (skb->len - sizeof(struct cpcs_trailer))))
1318           {
1319              atomic_inc(&vcc->stats->rx_err);
1320              IF_ERR(printk("rx_dle_intr: Bad  AAL5 trailer %d (skb len %d)",
1321                                                             length, skb->len);)
1322              dev_kfree_skb_any(skb);
1323              atm_return(vcc, atm_guess_pdu2truesize(len));
1324              goto INCR_DLE;
1325           }
1326           skb_trim(skb, length);
1327
1328           /* Display the packet */
1329           IF_RXPKT(printk("\nDmad Recvd data: len = %d \n", skb->len);
1330           xdump(skb->data, skb->len, "RX: ");
1331           printk("\n");)
1332
1333           IF_RX(printk("rx_dle_intr: skb push");)
1334           vcc->push(vcc,skb);
1335           atomic_inc(&vcc->stats->rx);
1336           iadev->rx_pkt_cnt++;
1337       }
1338 INCR_DLE:
1339       if (++dle == iadev->rx_dle_q.end)
1340           dle = iadev->rx_dle_q.start;
1341   }
1342   iadev->rx_dle_q.read = dle;
1343
1344   /* if the interrupts are masked because there were no free desc available,
1345                 unmask them now. */
1346   if (!iadev->rxing) {
1347      state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
1348      if (!(state & FREEQ_EMPTY)) {
1349         state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
1350         writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
1351                                       iadev->reass_reg+REASS_MASK_REG);
1352         iadev->rxing++;
1353      }
1354   }
1355 }
1356
1357
1358 static int open_rx(struct atm_vcc *vcc)
1359 {
1360         IADEV *iadev;
1361         u_short __iomem *vc_table;
1362         u_short __iomem *reass_ptr;
1363         IF_EVENT(printk("iadev: open_rx %d.%d\n", vcc->vpi, vcc->vci);)
1364
1365         if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
1366         iadev = INPH_IA_DEV(vcc->dev);
1367         if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
1368            if (iadev->phy_type & FE_25MBIT_PHY) {
1369                printk("IA:  ABR not support\n");
1370                return -EINVAL;
1371            }
1372         }
1373         /* Make only this VCI in the vc table valid and let all
1374                 others be invalid entries */
1375         vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
1376         vc_table += vcc->vci;
1377         /* mask the last 6 bits and OR it with 3 for 1K VCs */
1378
1379         *vc_table = vcc->vci << 6;
1380         /* Also keep a list of open rx vcs so that we can attach them with
1381                 incoming PDUs later. */
1382         if ((vcc->qos.rxtp.traffic_class == ATM_ABR) ||
1383                                 (vcc->qos.txtp.traffic_class == ATM_ABR))
1384         {
1385                 srv_cls_param_t srv_p;
1386                 init_abr_vc(iadev, &srv_p);
1387                 ia_open_abr_vc(iadev, &srv_p, vcc, 0);
1388         }
1389         else {  /* for UBR  later may need to add CBR logic */
1390                 reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
1391                 reass_ptr += vcc->vci;
1392                 *reass_ptr = NO_AAL5_PKT;
1393         }
1394
1395         if (iadev->rx_open[vcc->vci])
1396                 printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n",
1397                         vcc->dev->number, vcc->vci);
1398         iadev->rx_open[vcc->vci] = vcc;
1399         return 0;
1400 }
1401
1402 static int rx_init(struct atm_dev *dev)
1403 {
1404         IADEV *iadev;
1405         struct rx_buf_desc __iomem *buf_desc_ptr;
1406         unsigned long rx_pkt_start = 0;
1407         void *dle_addr;
1408         struct abr_vc_table  *abr_vc_table;
1409         u16 *vc_table;
1410         u16 *reass_table;
1411         u16 *ptr16;
1412         int i,j, vcsize_sel;
1413         u_short freeq_st_adr;
1414         u_short *freeq_start;
1415
1416         iadev = INPH_IA_DEV(dev);
1417   //    spin_lock_init(&iadev->rx_lock);
1418
1419         /* Allocate 4k bytes - more aligned than needed (4k boundary) */
1420         dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1421                                         &iadev->rx_dle_dma);
1422         if (!dle_addr)  {
1423                 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1424                 goto err_out;
1425         }
1426         iadev->rx_dle_q.start = (struct dle*)dle_addr;
1427         iadev->rx_dle_q.read = iadev->rx_dle_q.start;
1428         iadev->rx_dle_q.write = iadev->rx_dle_q.start;
1429         iadev->rx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1430         /* the end of the dle q points to the entry after the last
1431         DLE that can be used. */
1432
1433         /* write the upper 20 bits of the start address to rx list address register */
1434         writel(iadev->rx_dle_dma & 0xfffff000,
1435                iadev->dma + IPHASE5575_RX_LIST_ADDR);
1436         IF_INIT(printk("Tx Dle list addr: 0x%08x value: 0x%0x\n",
1437                       (u32)(iadev->dma+IPHASE5575_TX_LIST_ADDR),
1438                       *(u32*)(iadev->dma+IPHASE5575_TX_LIST_ADDR));
1439         printk("Rx Dle list addr: 0x%08x value: 0x%0x\n",
1440                       (u32)(iadev->dma+IPHASE5575_RX_LIST_ADDR),
1441                       *(u32*)(iadev->dma+IPHASE5575_RX_LIST_ADDR));)
1442
1443         writew(0xffff, iadev->reass_reg+REASS_MASK_REG);
1444         writew(0, iadev->reass_reg+MODE_REG);
1445         writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);
1446
1447         /* Receive side control memory map
1448            -------------------------------
1449
1450                 Buffer descr    0x0000 (736 - 23K)
1451                 VP Table        0x5c00 (256 - 512)
1452                 Except q        0x5e00 (128 - 512)
1453                 Free buffer q   0x6000 (1K - 2K)
1454                 Packet comp q   0x6800 (1K - 2K)
1455                 Reass Table     0x7000 (1K - 2K)
1456                 VC Table        0x7800 (1K - 2K)
1457                 ABR VC Table    0x8000 (1K - 32K)
1458         */
1459
1460         /* Base address for Buffer Descriptor Table */
1461         writew(RX_DESC_BASE >> 16, iadev->reass_reg+REASS_DESC_BASE);
1462         /* Set the buffer size register */
1463         writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);
1464
1465         /* Initialize each entry in the Buffer Descriptor Table */
1466         iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
1467         buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
1468         memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1469         buf_desc_ptr++;
1470         rx_pkt_start = iadev->rx_pkt_ram;
1471         for(i=1; i<=iadev->num_rx_desc; i++)
1472         {
1473                 memset_io(buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1474                 buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16;
1475                 buf_desc_ptr->buf_start_lo = rx_pkt_start & 0x0000ffff;
1476                 buf_desc_ptr++;
1477                 rx_pkt_start += iadev->rx_buf_sz;
1478         }
1479         IF_INIT(printk("Rx Buffer desc ptr: 0x%0x\n", (u32)(buf_desc_ptr));)
1480         i = FREE_BUF_DESC_Q*iadev->memSize;
1481         writew(i >> 16,  iadev->reass_reg+REASS_QUEUE_BASE);
1482         writew(i, iadev->reass_reg+FREEQ_ST_ADR);
1483         writew(i+iadev->num_rx_desc*sizeof(u_short),
1484                                          iadev->reass_reg+FREEQ_ED_ADR);
1485         writew(i, iadev->reass_reg+FREEQ_RD_PTR);
1486         writew(i+iadev->num_rx_desc*sizeof(u_short),
1487                                         iadev->reass_reg+FREEQ_WR_PTR);
1488         /* Fill the FREEQ with all the free descriptors. */
1489         freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);
1490         freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);
1491         for(i=1; i<=iadev->num_rx_desc; i++)
1492         {
1493                 *freeq_start = (u_short)i;
1494                 freeq_start++;
1495         }
1496         IF_INIT(printk("freeq_start: 0x%0x\n", (u32)freeq_start);)
1497         /* Packet Complete Queue */
1498         i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
1499         writew(i, iadev->reass_reg+PCQ_ST_ADR);
1500         writew(i+iadev->num_vc*sizeof(u_short), iadev->reass_reg+PCQ_ED_ADR);
1501         writew(i, iadev->reass_reg+PCQ_RD_PTR);
1502         writew(i, iadev->reass_reg+PCQ_WR_PTR);
1503
1504         /* Exception Queue */
1505         i = (EXCEPTION_Q * iadev->memSize) & 0xffff;
1506         writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
1507         writew(i + NUM_RX_EXCP * sizeof(RX_ERROR_Q),
1508                                              iadev->reass_reg+EXCP_Q_ED_ADR);
1509         writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
1510         writew(i, iadev->reass_reg+EXCP_Q_WR_PTR);
1511
1512         /* Load local copy of FREEQ and PCQ ptrs */
1513         iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0xffff;
1514         iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
1515         iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
1516         iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
1517         iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
1518         iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
1519         iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
1520         iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
1521
1522         IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x",
1523               iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd,
1524               iadev->rfL.pcq_wr);)
1525         /* just for check - no VP TBL */
1526         /* VP Table */
1527         /* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */
1528         /* initialize VP Table for invalid VPIs
1529                 - I guess we can write all 1s or 0x000f in the entire memory
1530                   space or something similar.
1531         */
1532
1533         /* This seems to work and looks right to me too !!! */
1534         i =  REASS_TABLE * iadev->memSize;
1535         writew((i >> 3), iadev->reass_reg+REASS_TABLE_BASE);
1536         /* initialize Reassembly table to I don't know what ???? */
1537         reass_table = (u16 *)(iadev->reass_ram+i);
1538         j = REASS_TABLE_SZ * iadev->memSize;
1539         for(i=0; i < j; i++)
1540                 *reass_table++ = NO_AAL5_PKT;
1541        i = 8*1024;
1542        vcsize_sel =  0;
1543        while (i != iadev->num_vc) {
1544           i /= 2;
1545           vcsize_sel++;
1546        }
1547        i = RX_VC_TABLE * iadev->memSize;
1548        writew(((i>>3) & 0xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
1549        vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
1550         j = RX_VC_TABLE_SZ * iadev->memSize;
1551         for(i = 0; i < j; i++)
1552         {
1553                 /* shift the reassembly pointer by 3 + lower 3 bits of
1554                 vc_lkup_base register (=3 for 1K VCs) and the last byte
1555                 is those low 3 bits.
1556                 Shall program this later.
1557                 */
1558                 *vc_table = (i << 6) | 15;      /* for invalid VCI */
1559                 vc_table++;
1560         }
1561         /* ABR VC table */
1562         i =  ABR_VC_TABLE * iadev->memSize;
1563         writew(i >> 3, iadev->reass_reg+ABR_LKUP_BASE);
1564
1565         i = ABR_VC_TABLE * iadev->memSize;
1566         abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);
1567         j = REASS_TABLE_SZ * iadev->memSize;
1568         memset ((char*)abr_vc_table, 0, j * sizeof(*abr_vc_table));
1569         for(i = 0; i < j; i++) {
1570                 abr_vc_table->rdf = 0x0003;
1571                 abr_vc_table->air = 0x5eb1;
1572                 abr_vc_table++;
1573         }
1574
1575         /* Initialize other registers */
1576
1577         /* VP Filter Register set for VC Reassembly only */
1578         writew(0xff00, iadev->reass_reg+VP_FILTER);
1579         writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
1580         writew(0x1,  iadev->reass_reg+PROTOCOL_ID);
1581
1582         /* Packet Timeout Count  related Registers :
1583            Set packet timeout to occur in about 3 seconds
1584            Set Packet Aging Interval count register to overflow in about 4 us
1585         */
1586         writew(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
1587         ptr16 = (u16*)j;
1588         i = ((u32)ptr16 >> 6) & 0xff;
1589         ptr16  += j - 1;
1590         i |=(((u32)ptr16 << 2) & 0xff00);
1591         writew(i, iadev->reass_reg+TMOUT_RANGE);
1592         /* initiate the desc_tble */
1593         for(i=0; i<iadev->num_tx_desc;i++)
1594             iadev->desc_tbl[i].timestamp = 0;
1595
1596         /* to clear the interrupt status register - read it */
1597         readw(iadev->reass_reg+REASS_INTR_STATUS_REG);
1598
1599         /* Mask Register - clear it */
1600         writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);
1601
1602         skb_queue_head_init(&iadev->rx_dma_q);
1603         iadev->rx_free_desc_qhead = NULL;
1604         iadev->rx_open = kmalloc(4*iadev->num_vc,GFP_KERNEL);
1605         if (!iadev->rx_open)
1606         {
1607                 printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
1608                 dev->number);
1609                 goto err_free_dle;
1610         }
1611         memset(iadev->rx_open, 0, 4*iadev->num_vc);
1612         iadev->rxing = 1;
1613         iadev->rx_pkt_cnt = 0;
1614         /* Mode Register */
1615         writew(R_ONLINE, iadev->reass_reg+MODE_REG);
1616         return 0;
1617
1618 err_free_dle:
1619         pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
1620                             iadev->rx_dle_dma);
1621 err_out:
1622         return -ENOMEM;
1623 }
1624
1625
1626 /*
1627         The memory map suggested in appendix A and the coding for it.
1628         Keeping it around just in case we change our mind later.
1629
1630                 Buffer descr    0x0000 (128 - 4K)
1631                 UBR sched       0x1000 (1K - 4K)
1632                 UBR Wait q      0x2000 (1K - 4K)
1633                 Commn queues    0x3000 Packet Ready, Trasmit comp(0x3100)
1634                                         (128 - 256) each
1635                 extended VC     0x4000 (1K - 8K)
1636                 ABR sched       0x6000  and ABR wait queue (1K - 2K) each
1637                 CBR sched       0x7000 (as needed)
1638                 VC table        0x8000 (1K - 32K)
1639 */
1640
1641 static void tx_intr(struct atm_dev *dev)
1642 {
1643         IADEV *iadev;
1644         unsigned short status;
1645         unsigned long flags;
1646
1647         iadev = INPH_IA_DEV(dev);
1648
1649         status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);
1650         if (status & TRANSMIT_DONE){
1651
1652            IF_EVENT(printk("Tansmit Done Intr logic run\n");)
1653            spin_lock_irqsave(&iadev->tx_lock, flags);
1654            ia_tx_poll(iadev);
1655            spin_unlock_irqrestore(&iadev->tx_lock, flags);
1656            writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
1657            if (iadev->close_pending)
1658                wake_up(&iadev->close_wait);
1659         }
1660         if (status & TCQ_NOT_EMPTY)
1661         {
1662             IF_EVENT(printk("TCQ_NOT_EMPTY int received\n");)
1663         }
1664 }
1665
1666 static void tx_dle_intr(struct atm_dev *dev)
1667 {
1668         IADEV *iadev;
1669         struct dle *dle, *cur_dle;
1670         struct sk_buff *skb;
1671         struct atm_vcc *vcc;
1672         struct ia_vcc  *iavcc;
1673         u_int dle_lp;
1674         unsigned long flags;
1675
1676         iadev = INPH_IA_DEV(dev);
1677         spin_lock_irqsave(&iadev->tx_lock, flags);
1678         dle = iadev->tx_dle_q.read;
1679         dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) &
1680                                         (sizeof(struct dle)*DLE_ENTRIES - 1);
1681         cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4));
1682         while (dle != cur_dle)
1683         {
1684             /* free the DMAed skb */
1685             skb = skb_dequeue(&iadev->tx_dma_q);
1686             if (!skb) break;
1687
1688             /* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
1689             if (!((dle - iadev->tx_dle_q.start)%(2*sizeof(struct dle)))) {
1690                 pci_unmap_single(iadev->pci, dle->sys_pkt_addr, skb->len,
1691                                  PCI_DMA_TODEVICE);
1692             }
1693             vcc = ATM_SKB(skb)->vcc;
1694             if (!vcc) {
1695                   printk("tx_dle_intr: vcc is null\n");
1696                   spin_unlock_irqrestore(&iadev->tx_lock, flags);
1697                   dev_kfree_skb_any(skb);
1698
1699                   return;
1700             }
1701             iavcc = INPH_IA_VCC(vcc);
1702             if (!iavcc) {
1703                   printk("tx_dle_intr: iavcc is null\n");
1704                   spin_unlock_irqrestore(&iadev->tx_lock, flags);
1705                   dev_kfree_skb_any(skb);
1706                   return;
1707             }
1708             if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
1709                if ((vcc->pop) && (skb->len != 0))
1710                {
1711                  vcc->pop(vcc, skb);
1712                }
1713                else {
1714                  dev_kfree_skb_any(skb);
1715                }
1716             }
1717             else { /* Hold the rate-limited skb for flow control */
1718                IA_SKB_STATE(skb) |= IA_DLED;
1719                skb_queue_tail(&iavcc->txing_skb, skb);
1720             }
1721             IF_EVENT(printk("tx_dle_intr: enque skb = 0x%x \n", (u32)skb);)
1722             if (++dle == iadev->tx_dle_q.end)
1723                  dle = iadev->tx_dle_q.start;
1724         }
1725         iadev->tx_dle_q.read = dle;
1726         spin_unlock_irqrestore(&iadev->tx_lock, flags);
1727 }
1728
1729 static int open_tx(struct atm_vcc *vcc)
1730 {
1731         struct ia_vcc *ia_vcc;
1732         IADEV *iadev;
1733         struct main_vc *vc;
1734         struct ext_vc *evc;
1735         int ret;
1736         IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n", vcc->vci);)
1737         if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
1738         iadev = INPH_IA_DEV(vcc->dev);
1739
1740         if (iadev->phy_type & FE_25MBIT_PHY) {
1741            if (vcc->qos.txtp.traffic_class == ATM_ABR) {
1742                printk("IA:  ABR not support\n");
1743                return -EINVAL;
1744            }
1745           if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1746                printk("IA:  CBR not support\n");
1747                return -EINVAL;
1748           }
1749         }
1750         ia_vcc =  INPH_IA_VCC(vcc);
1751         memset((caddr_t)ia_vcc, 0, sizeof(*ia_vcc));
1752         if (vcc->qos.txtp.max_sdu >
1753                          (iadev->tx_buf_sz - sizeof(struct cpcs_trailer))){
1754            printk("IA:  SDU size over (%d) the configured SDU size %d\n",
1755                   vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
1756            vcc->dev_data = NULL;
1757            kfree(ia_vcc);
1758            return -EINVAL;
1759         }
1760         ia_vcc->vc_desc_cnt = 0;
1761         ia_vcc->txing = 1;
1762
1763         /* find pcr */
1764         if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR)
1765            vcc->qos.txtp.pcr = iadev->LineRate;
1766         else if ((vcc->qos.txtp.max_pcr == 0)&&( vcc->qos.txtp.pcr <= 0))
1767            vcc->qos.txtp.pcr = iadev->LineRate;
1768         else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0))
1769            vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
1770         if (vcc->qos.txtp.pcr > iadev->LineRate)
1771              vcc->qos.txtp.pcr = iadev->LineRate;
1772         ia_vcc->pcr = vcc->qos.txtp.pcr;
1773
1774         if (ia_vcc->pcr > (iadev->LineRate / 6) ) ia_vcc->ltimeout = HZ / 10;
1775         else if (ia_vcc->pcr > (iadev->LineRate / 130)) ia_vcc->ltimeout = HZ;
1776         else if (ia_vcc->pcr <= 170) ia_vcc->ltimeout = 16 * HZ;
1777         else ia_vcc->ltimeout = 2700 * HZ  / ia_vcc->pcr;
1778         if (ia_vcc->pcr < iadev->rate_limit)
1779            skb_queue_head_init (&ia_vcc->txing_skb);
1780         if (ia_vcc->pcr < iadev->rate_limit) {
1781            struct sock *sk = sk_atm(vcc);
1782
1783            if (vcc->qos.txtp.max_sdu != 0) {
1784                if (ia_vcc->pcr > 60000)
1785                   sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5;
1786                else if (ia_vcc->pcr > 2000)
1787                   sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4;
1788                else
1789                  sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3;
1790            }
1791            else
1792              sk->sk_sndbuf = 24576;
1793         }
1794
1795         vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
1796         evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
1797         vc += vcc->vci;
1798         evc += vcc->vci;
1799         memset((caddr_t)vc, 0, sizeof(*vc));
1800         memset((caddr_t)evc, 0, sizeof(*evc));
1801
1802         /* store the most significant 4 bits of vci as the last 4 bits
1803                 of first part of atm header.
1804            store the last 12 bits of vci as first 12 bits of the second
1805                 part of the atm header.
1806         */
1807         evc->atm_hdr1 = (vcc->vci >> 12) & 0x000f;
1808         evc->atm_hdr2 = (vcc->vci & 0x0fff) << 4;
1809
1810         /* check the following for different traffic classes */
1811         if (vcc->qos.txtp.traffic_class == ATM_UBR)
1812         {
1813                 vc->type = UBR;
1814                 vc->status = CRC_APPEND;
1815                 vc->acr = cellrate_to_float(iadev->LineRate);
1816                 if (vcc->qos.txtp.pcr > 0)
1817                    vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);
1818                 IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n",
1819                                              vcc->qos.txtp.max_pcr,vc->acr);)
1820         }
1821         else if (vcc->qos.txtp.traffic_class == ATM_ABR)
1822         {       srv_cls_param_t srv_p;
1823                 IF_ABR(printk("Tx ABR VCC\n");)
1824                 init_abr_vc(iadev, &srv_p);
1825                 if (vcc->qos.txtp.pcr > 0)
1826                    srv_p.pcr = vcc->qos.txtp.pcr;
1827                 if (vcc->qos.txtp.min_pcr > 0) {
1828                    int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
1829                    if (tmpsum > iadev->LineRate)
1830                        return -EBUSY;
1831                    srv_p.mcr = vcc->qos.txtp.min_pcr;
1832                    iadev->sum_mcr += vcc->qos.txtp.min_pcr;
1833                 }
1834                 else srv_p.mcr = 0;
1835                 if (vcc->qos.txtp.icr)
1836                    srv_p.icr = vcc->qos.txtp.icr;
1837                 if (vcc->qos.txtp.tbe)
1838                    srv_p.tbe = vcc->qos.txtp.tbe;
1839                 if (vcc->qos.txtp.frtt)
1840                    srv_p.frtt = vcc->qos.txtp.frtt;
1841                 if (vcc->qos.txtp.rif)
1842                    srv_p.rif = vcc->qos.txtp.rif;
1843                 if (vcc->qos.txtp.rdf)
1844                    srv_p.rdf = vcc->qos.txtp.rdf;
1845                 if (vcc->qos.txtp.nrm_pres)
1846                    srv_p.nrm = vcc->qos.txtp.nrm;
1847                 if (vcc->qos.txtp.trm_pres)
1848                    srv_p.trm = vcc->qos.txtp.trm;
1849                 if (vcc->qos.txtp.adtf_pres)
1850                    srv_p.adtf = vcc->qos.txtp.adtf;
1851                 if (vcc->qos.txtp.cdf_pres)
1852                    srv_p.cdf = vcc->qos.txtp.cdf;
1853                 if (srv_p.icr > srv_p.pcr)
1854                    srv_p.icr = srv_p.pcr;
1855                 IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d  mcr = %d\n",
1856                                                       srv_p.pcr, srv_p.mcr);)
1857                 ia_open_abr_vc(iadev, &srv_p, vcc, 1);
1858         } else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
1859                 if (iadev->phy_type & FE_25MBIT_PHY) {
1860                     printk("IA:  CBR not support\n");
1861                     return -EINVAL;
1862                 }
1863                 if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
1864                    IF_CBR(printk("PCR is not availble\n");)
1865                    return -1;
1866                 }
1867                 vc->type = CBR;
1868                 vc->status = CRC_APPEND;
1869                 if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {
1870                     return ret;
1871                 }
1872        }
1873         else
1874            printk("iadev:  Non UBR, ABR and CBR traffic not supportedn");
1875
1876         iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
1877         IF_EVENT(printk("ia open_tx returning \n");)
1878         return 0;
1879 }
1880
1881
1882 static int tx_init(struct atm_dev *dev)
1883 {
1884         IADEV *iadev;
1885         struct tx_buf_desc *buf_desc_ptr;
1886         unsigned int tx_pkt_start;
1887         void *dle_addr;
1888         int i;
1889         u_short tcq_st_adr;
1890         u_short *tcq_start;
1891         u_short prq_st_adr;
1892         u_short *prq_start;
1893         struct main_vc *vc;
1894         struct ext_vc *evc;
1895         u_short tmp16;
1896         u32 vcsize_sel;
1897
1898         iadev = INPH_IA_DEV(dev);
1899         spin_lock_init(&iadev->tx_lock);
1900
1901         IF_INIT(printk("Tx MASK REG: 0x%0x\n",
1902                                 readw(iadev->seg_reg+SEG_MASK_REG));)
1903
1904         /* Allocate 4k (boundary aligned) bytes */
1905         dle_addr = pci_alloc_consistent(iadev->pci, DLE_TOTAL_SIZE,
1906                                         &iadev->tx_dle_dma);
1907         if (!dle_addr)  {
1908                 printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n");
1909                 goto err_out;
1910         }
1911         iadev->tx_dle_q.start = (struct dle*)dle_addr;
1912         iadev->tx_dle_q.read = iadev->tx_dle_q.start;
1913         iadev->tx_dle_q.write = iadev->tx_dle_q.start;
1914         iadev->tx_dle_q.end = (struct dle*)((u32)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
1915
1916         /* write the upper 20 bits of the start address to tx list address register */
1917         writel(iadev->tx_dle_dma & 0xfffff000,
1918                iadev->dma + IPHASE5575_TX_LIST_ADDR);
1919         writew(0xffff, iadev->seg_reg+SEG_MASK_REG);
1920         writew(0, iadev->seg_reg+MODE_REG_0);
1921         writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);
1922         iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
1923         iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
1924         iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
1925
1926         /*
1927            Transmit side control memory map
1928            --------------------------------
1929          Buffer descr   0x0000 (128 - 4K)
1930          Commn queues   0x1000  Transmit comp, Packet ready(0x1400)
1931                                         (512 - 1K) each
1932                                         TCQ - 4K, PRQ - 5K
1933          CBR Table      0x1800 (as needed) - 6K
1934          UBR Table      0x3000 (1K - 4K) - 12K
1935          UBR Wait queue 0x4000 (1K - 4K) - 16K
1936          ABR sched      0x5000  and ABR wait queue (1K - 2K) each
1937                                 ABR Tbl - 20K, ABR Wq - 22K
1938          extended VC    0x6000 (1K - 8K) - 24K
1939          VC Table       0x8000 (1K - 32K) - 32K
1940
1941         Between 0x2000 (8K) and 0x3000 (12K) there is 4K space left for VBR Tbl
1942         and Wait q, which can be allotted later.
1943         */
1944
1945         /* Buffer Descriptor Table Base address */
1946         writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);
1947
1948         /* initialize each entry in the buffer descriptor table */
1949         buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);
1950         memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1951         buf_desc_ptr++;
1952         tx_pkt_start = TX_PACKET_RAM;
1953         for(i=1; i<=iadev->num_tx_desc; i++)
1954         {
1955                 memset((caddr_t)buf_desc_ptr, 0, sizeof(*buf_desc_ptr));
1956                 buf_desc_ptr->desc_mode = AAL5;
1957                 buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16;
1958                 buf_desc_ptr->buf_start_lo = tx_pkt_start & 0x0000ffff;
1959                 buf_desc_ptr++;
1960                 tx_pkt_start += iadev->tx_buf_sz;
1961         }
1962         iadev->tx_buf = kmalloc(iadev->num_tx_desc*sizeof(struct cpcs_trailer_desc), GFP_KERNEL);
1963         if (!iadev->tx_buf) {
1964             printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1965             goto err_free_dle;
1966         }
1967         for (i= 0; i< iadev->num_tx_desc; i++)
1968         {
1969             struct cpcs_trailer *cpcs;
1970
1971             cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
1972             if(!cpcs) {
1973                 printk(KERN_ERR DEV_LABEL " couldn't get freepage\n");
1974                 goto err_free_tx_bufs;
1975             }
1976             iadev->tx_buf[i].cpcs = cpcs;
1977             iadev->tx_buf[i].dma_addr = pci_map_single(iadev->pci,
1978                 cpcs, sizeof(*cpcs), PCI_DMA_TODEVICE);
1979         }
1980         iadev->desc_tbl = kmalloc(iadev->num_tx_desc *
1981                                    sizeof(struct desc_tbl_t), GFP_KERNEL);
1982         if (!iadev->desc_tbl) {
1983                 printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
1984                 goto err_free_all_tx_bufs;
1985         }
1986
1987         /* Communication Queues base address */
1988         i = TX_COMP_Q * iadev->memSize;
1989         writew(i >> 16, iadev->seg_reg+SEG_QUEUE_BASE);
1990
1991         /* Transmit Complete Queue */
1992         writew(i, iadev->seg_reg+TCQ_ST_ADR);
1993         writew(i, iadev->seg_reg+TCQ_RD_PTR);
1994         writew(i+iadev->num_tx_desc*sizeof(u_short),iadev->seg_reg+TCQ_WR_PTR);
1995         iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof(u_short);
1996         writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
1997                                               iadev->seg_reg+TCQ_ED_ADR);
1998         /* Fill the TCQ with all the free descriptors. */
1999         tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);
2000         tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);
2001         for(i=1; i<=iadev->num_tx_desc; i++)
2002         {
2003                 *tcq_start = (u_short)i;
2004                 tcq_start++;
2005         }
2006
2007         /* Packet Ready Queue */
2008         i = PKT_RDY_Q * iadev->memSize;
2009         writew(i, iadev->seg_reg+PRQ_ST_ADR);
2010         writew(i+2 * iadev->num_tx_desc * sizeof(u_short),
2011                                               iadev->seg_reg+PRQ_ED_ADR);
2012         writew(i, iadev->seg_reg+PRQ_RD_PTR);
2013         writew(i, iadev->seg_reg+PRQ_WR_PTR);
2014
2015         /* Load local copy of PRQ and TCQ ptrs */
2016         iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0xffff;
2017         iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
2018         iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
2019
2020         iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
2021         iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
2022         iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
2023
2024         /* Just for safety initializing the queue to have desc 1 always */
2025         /* Fill the PRQ with all the free descriptors. */
2026         prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);
2027         prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);
2028         for(i=1; i<=iadev->num_tx_desc; i++)
2029         {
2030                 *prq_start = (u_short)0;        /* desc 1 in all entries */
2031                 prq_start++;
2032         }
2033         /* CBR Table */
2034         IF_INIT(printk("Start CBR Init\n");)
2035 #if 1  /* for 1K VC board, CBR_PTR_BASE is 0 */
2036         writew(0,iadev->seg_reg+CBR_PTR_BASE);
2037 #else /* Charlie's logic is wrong ? */
2038         tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17;
2039         IF_INIT(printk("cbr_ptr_base = 0x%x ", tmp16);)
2040         writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
2041 #endif
2042
2043         IF_INIT(printk("value in register = 0x%x\n",
2044                                    readw(iadev->seg_reg+CBR_PTR_BASE));)
2045         tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1;
2046         writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
2047         IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n", tmp16,
2048                                         readw(iadev->seg_reg+CBR_TAB_BEG));)
2049         writew(tmp16, iadev->seg_reg+CBR_TAB_END+1); // CBR_PTR;
2050         tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2) >> 1;
2051         writew(tmp16, iadev->seg_reg+CBR_TAB_END);
2052         IF_INIT(printk("iadev->seg_reg = 0x%x CBR_PTR_BASE = 0x%x\n",
2053                (u32)iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
2054         IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n",
2055           readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
2056           readw(iadev->seg_reg+CBR_TAB_END+1));)
2057
2058         /* Initialize the CBR Schedualing Table */
2059         memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize,
2060                                                           0, iadev->num_vc*6);
2061         iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3;
2062         iadev->CbrEntryPt = 0;
2063         iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
2064         iadev->NumEnabledCBR = 0;
2065
2066         /* UBR scheduling Table and wait queue */
2067         /* initialize all bytes of UBR scheduler table and wait queue to 0
2068                 - SCHEDSZ is 1K (# of entries).
2069                 - UBR Table size is 4K
2070                 - UBR wait queue is 4K
2071            since the table and wait queues are contiguous, all the bytes
2072            can be initialized by one memeset.
2073         */
2074
2075         vcsize_sel = 0;
2076         i = 8*1024;
2077         while (i != iadev->num_vc) {
2078           i /= 2;
2079           vcsize_sel++;
2080         }
2081
2082         i = MAIN_VC_TABLE * iadev->memSize;
2083         writew(vcsize_sel | ((i >> 8) & 0xfff8),iadev->seg_reg+VCT_BASE);
2084         i =  EXT_VC_TABLE * iadev->memSize;
2085         writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
2086         i = UBR_SCHED_TABLE * iadev->memSize;
2087         writew((i & 0xffff) >> 11,  iadev->seg_reg+UBR_SBPTR_BASE);
2088         i = UBR_WAIT_Q * iadev->memSize;
2089         writew((i >> 7) & 0xffff,  iadev->seg_reg+UBRWQ_BASE);
2090         memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
2091                                                        0, iadev->num_vc*8);
2092         /* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/
2093         /* initialize all bytes of ABR scheduler table and wait queue to 0
2094                 - SCHEDSZ is 1K (# of entries).
2095                 - ABR Table size is 2K
2096                 - ABR wait queue is 2K
2097            since the table and wait queues are contiguous, all the bytes
2098            can be intialized by one memeset.
2099         */
2100         i = ABR_SCHED_TABLE * iadev->memSize;
2101         writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
2102         i = ABR_WAIT_Q * iadev->memSize;
2103         writew((i >> 7) & 0xffff, iadev->seg_reg+ABRWQ_BASE);
2104
2105         i = ABR_SCHED_TABLE*iadev->memSize;
2106         memset((caddr_t)(iadev->seg_ram+i),  0, iadev->num_vc*4);
2107         vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
2108         evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
2109         iadev->testTable = kmalloc(sizeof(long)*iadev->num_vc, GFP_KERNEL);
2110         if (!iadev->testTable) {
2111            printk("Get freepage  failed\n");
2112            goto err_free_desc_tbl;
2113         }
2114         for(i=0; i<iadev->num_vc; i++)
2115         {
2116                 memset((caddr_t)vc, 0, sizeof(*vc));
2117                 memset((caddr_t)evc, 0, sizeof(*evc));
2118                 iadev->testTable[i] = kmalloc(sizeof(struct testTable_t),
2119                                                 GFP_KERNEL);
2120                 if (!iadev->testTable[i])
2121                         goto err_free_test_tables;
2122                 iadev->testTable[i]->lastTime = 0;
2123                 iadev->testTable[i]->fract = 0;
2124                 iadev->testTable[i]->vc_status = VC_UBR;
2125                 vc++;
2126                 evc++;
2127         }
2128
2129         /* Other Initialization */
2130
2131         /* Max Rate Register */
2132         if (iadev->phy_type & FE_25MBIT_PHY) {
2133            writew(RATE25, iadev->seg_reg+MAXRATE);
2134            writew((UBR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2135         }
2136         else {
2137            writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
2138            writew((UBR_EN | ABR_EN | (0x23 << 2)), iadev->seg_reg+STPARMS);
2139         }
2140         /* Set Idle Header Reigisters to be sure */
2141         writew(0, iadev->seg_reg+IDLEHEADHI);
2142         writew(0, iadev->seg_reg+IDLEHEADLO);
2143
2144         /* Program ABR UBR Priority Register  as  PRI_ABR_UBR_EQUAL */
2145         writew(0xaa00, iadev->seg_reg+ABRUBR_ARB);
2146
2147         iadev->close_pending = 0;
2148         init_waitqueue_head(&iadev->close_wait);
2149         init_waitqueue_head(&iadev->timeout_wait);
2150         skb_queue_head_init(&iadev->tx_dma_q);
2151         ia_init_rtn_q(&iadev->tx_return_q);
2152
2153         /* RM Cell Protocol ID and Message Type */
2154         writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);
2155         skb_queue_head_init (&iadev->tx_backlog);
2156
2157         /* Mode Register 1 */
2158         writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);
2159
2160         /* Mode Register 0 */
2161         writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);
2162
2163         /* Interrupt Status Register - read to clear */
2164         readw(iadev->seg_reg+SEG_INTR_STATUS_REG);
2165
2166         /* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */
2167         writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
2168         writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2169         iadev->tx_pkt_cnt = 0;
2170         iadev->rate_limit = iadev->LineRate / 3;
2171
2172         return 0;
2173
2174 err_free_test_tables:
2175         while (--i >= 0)
2176                 kfree(iadev->testTable[i]);
2177         kfree(iadev->testTable);
2178 err_free_desc_tbl:
2179         kfree(iadev->desc_tbl);
2180 err_free_all_tx_bufs:
2181         i = iadev->num_tx_desc;
2182 err_free_tx_bufs:
2183         while (--i >= 0) {
2184                 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2185
2186                 pci_unmap_single(iadev->pci, desc->dma_addr,
2187                         sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2188                 kfree(desc->cpcs);
2189         }
2190         kfree(iadev->tx_buf);
2191 err_free_dle:
2192         pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2193                             iadev->tx_dle_dma);
2194 err_out:
2195         return -ENOMEM;
2196 }
2197
2198 static irqreturn_t ia_int(int irq, void *dev_id)
2199 {
2200    struct atm_dev *dev;
2201    IADEV *iadev;
2202    unsigned int status;
2203    int handled = 0;
2204
2205    dev = dev_id;
2206    iadev = INPH_IA_DEV(dev);
2207    while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))
2208    {
2209         handled = 1;
2210         IF_EVENT(printk("ia_int: status = 0x%x\n", status);)
2211         if (status & STAT_REASSINT)
2212         {
2213            /* do something */
2214            IF_EVENT(printk("REASSINT Bus status reg: %08x\n", status);)
2215            rx_intr(dev);
2216         }
2217         if (status & STAT_DLERINT)
2218         {
2219            /* Clear this bit by writing a 1 to it. */
2220            *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLERINT;
2221            rx_dle_intr(dev);
2222         }
2223         if (status & STAT_SEGINT)
2224         {
2225            /* do something */
2226            IF_EVENT(printk("IA: tx_intr \n");)
2227            tx_intr(dev);
2228         }
2229         if (status & STAT_DLETINT)
2230         {
2231            *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLETINT;
2232            tx_dle_intr(dev);
2233         }
2234         if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
2235         {
2236            if (status & STAT_FEINT)
2237                IaFrontEndIntr(iadev);
2238         }
2239    }
2240    return IRQ_RETVAL(handled);
2241 }
2242
2243
2244
2245 /*----------------------------- entries --------------------------------*/
2246 static int get_esi(struct atm_dev *dev)
2247 {
2248         IADEV *iadev;
2249         int i;
2250         u32 mac1;
2251         u16 mac2;
2252
2253         iadev = INPH_IA_DEV(dev);
2254         mac1 = cpu_to_be32(le32_to_cpu(readl(
2255                                 iadev->reg+IPHASE5575_MAC1)));
2256         mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));
2257         IF_INIT(printk("ESI: 0x%08x%04x\n", mac1, mac2);)
2258         for (i=0; i<MAC1_LEN; i++)
2259                 dev->esi[i] = mac1 >>(8*(MAC1_LEN-1-i));
2260
2261         for (i=0; i<MAC2_LEN; i++)
2262                 dev->esi[i+MAC1_LEN] = mac2 >>(8*(MAC2_LEN - 1 -i));
2263         return 0;
2264 }
2265
2266 static int reset_sar(struct atm_dev *dev)
2267 {
2268         IADEV *iadev;
2269         int i, error = 1;
2270         unsigned int pci[64];
2271
2272         iadev = INPH_IA_DEV(dev);
2273         for(i=0; i<64; i++)
2274           if ((error = pci_read_config_dword(iadev->pci,
2275                                 i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
2276               return error;
2277         writel(0, iadev->reg+IPHASE5575_EXT_RESET);
2278         for(i=0; i<64; i++)
2279           if ((error = pci_write_config_dword(iadev->pci,
2280                                         i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
2281             return error;
2282         udelay(5);
2283         return 0;
2284 }
2285
2286
2287 static int __devinit ia_init(struct atm_dev *dev)
2288 {
2289         IADEV *iadev;
2290         unsigned long real_base;
2291         void __iomem *base;
2292         unsigned short command;
2293         int error, i;
2294
2295         /* The device has been identified and registered. Now we read
2296            necessary configuration info like memory base address,
2297            interrupt number etc */
2298
2299         IF_INIT(printk(">ia_init\n");)
2300         dev->ci_range.vpi_bits = 0;
2301         dev->ci_range.vci_bits = NR_VCI_LD;
2302
2303         iadev = INPH_IA_DEV(dev);
2304         real_base = pci_resource_start (iadev->pci, 0);
2305         iadev->irq = iadev->pci->irq;
2306
2307         error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
2308         if (error) {
2309                 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",
2310                                 dev->number,error);
2311                 return -EINVAL;
2312         }
2313         IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",
2314                         dev->number, iadev->pci->revision, real_base, iadev->irq);)
2315
2316         /* find mapping size of board */
2317
2318         iadev->pci_map_size = pci_resource_len(iadev->pci, 0);
2319
2320         if (iadev->pci_map_size == 0x100000){
2321           iadev->num_vc = 4096;
2322           dev->ci_range.vci_bits = NR_VCI_4K_LD;
2323           iadev->memSize = 4;
2324         }
2325         else if (iadev->pci_map_size == 0x40000) {
2326           iadev->num_vc = 1024;
2327           iadev->memSize = 1;
2328         }
2329         else {
2330            printk("Unknown pci_map_size = 0x%x\n", iadev->pci_map_size);
2331            return -EINVAL;
2332         }
2333         IF_INIT(printk (DEV_LABEL "map size: %i\n", iadev->pci_map_size);)
2334
2335         /* enable bus mastering */
2336         pci_set_master(iadev->pci);
2337
2338         /*
2339          * Delay at least 1us before doing any mem accesses (how 'bout 10?)
2340          */
2341         udelay(10);
2342
2343         /* mapping the physical address to a virtual address in address space */
2344         base = ioremap(real_base,iadev->pci_map_size);  /* ioremap is not resolved ??? */
2345
2346         if (!base)
2347         {
2348                 printk(DEV_LABEL " (itf %d): can't set up page mapping\n",
2349                             dev->number);
2350                 return error;
2351         }
2352         IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",
2353                         dev->number, iadev->pci->revision, base, iadev->irq);)
2354
2355         /* filling the iphase dev structure */
2356         iadev->mem = iadev->pci_map_size /2;
2357         iadev->real_base = real_base;
2358         iadev->base = base;
2359
2360         /* Bus Interface Control Registers */
2361         iadev->reg = base + REG_BASE;
2362         /* Segmentation Control Registers */
2363         iadev->seg_reg = base + SEG_BASE;
2364         /* Reassembly Control Registers */
2365         iadev->reass_reg = base + REASS_BASE;
2366         /* Front end/ DMA control registers */
2367         iadev->phy = base + PHY_BASE;
2368         iadev->dma = base + PHY_BASE;
2369         /* RAM - Segmentation RAm and Reassembly RAM */
2370         iadev->ram = base + ACTUAL_RAM_BASE;
2371         iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;
2372         iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;
2373
2374         /* lets print out the above */
2375         IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n",
2376           iadev->reg,iadev->seg_reg,iadev->reass_reg,
2377           iadev->phy, iadev->ram, iadev->seg_ram,
2378           iadev->reass_ram);)
2379
2380         /* lets try reading the MAC address */
2381         error = get_esi(dev);
2382         if (error) {
2383           iounmap(iadev->base);
2384           return error;
2385         }
2386         printk("IA: ");
2387         for (i=0; i < ESI_LEN; i++)
2388                 printk("%s%02X",i ? "-" : "",dev->esi[i]);
2389         printk("\n");
2390
2391         /* reset SAR */
2392         if (reset_sar(dev)) {
2393            iounmap(iadev->base);
2394            printk("IA: reset SAR fail, please try again\n");
2395            return 1;
2396         }
2397         return 0;
2398 }
2399
2400 static void ia_update_stats(IADEV *iadev) {
2401     if (!iadev->carrier_detect)
2402         return;
2403     iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0xffff;
2404     iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
2405     iadev->drop_rxpkt +=  readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
2406     iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
2407     iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
2408     iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
2409     return;
2410 }
2411
2412 static void ia_led_timer(unsigned long arg) {
2413         unsigned long flags;
2414         static u_char blinking[8] = {0, 0, 0, 0, 0, 0, 0, 0};
2415         u_char i;
2416         static u32 ctrl_reg;
2417         for (i = 0; i < iadev_count; i++) {
2418            if (ia_dev[i]) {
2419               ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2420               if (blinking[i] == 0) {
2421                  blinking[i]++;
2422                  ctrl_reg &= (~CTRL_LED);
2423                  writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2424                  ia_update_stats(ia_dev[i]);
2425               }
2426               else {
2427                  blinking[i] = 0;
2428                  ctrl_reg |= CTRL_LED;
2429                  writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
2430                  spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
2431                  if (ia_dev[i]->close_pending)
2432                     wake_up(&ia_dev[i]->close_wait);
2433                  ia_tx_poll(ia_dev[i]);
2434                  spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
2435               }
2436            }
2437         }
2438         mod_timer(&ia_timer, jiffies + HZ / 4);
2439         return;
2440 }
2441
2442 static void ia_phy_put(struct atm_dev *dev, unsigned char value,
2443         unsigned long addr)
2444 {
2445         writel(value, INPH_IA_DEV(dev)->phy+addr);
2446 }
2447
2448 static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)
2449 {
2450         return readl(INPH_IA_DEV(dev)->phy+addr);
2451 }
2452
2453 static void ia_free_tx(IADEV *iadev)
2454 {
2455         int i;
2456
2457         kfree(iadev->desc_tbl);
2458         for (i = 0; i < iadev->num_vc; i++)
2459                 kfree(iadev->testTable[i]);
2460         kfree(iadev->testTable);
2461         for (i = 0; i < iadev->num_tx_desc; i++) {
2462                 struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
2463
2464                 pci_unmap_single(iadev->pci, desc->dma_addr,
2465                         sizeof(*desc->cpcs), PCI_DMA_TODEVICE);
2466                 kfree(desc->cpcs);
2467         }
2468         kfree(iadev->tx_buf);
2469         pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
2470                             iadev->tx_dle_dma);
2471 }
2472
2473 static void ia_free_rx(IADEV *iadev)
2474 {
2475         kfree(iadev->rx_open);
2476         pci_free_consistent(iadev->pci, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
2477                           iadev->rx_dle_dma);
2478 }
2479
2480 static int __devinit ia_start(struct atm_dev *dev)
2481 {
2482         IADEV *iadev;
2483         int error;
2484         unsigned char phy;
2485         u32 ctrl_reg;
2486         IF_EVENT(printk(">ia_start\n");)
2487         iadev = INPH_IA_DEV(dev);
2488         if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
2489                 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
2490                     dev->number, iadev->irq);
2491                 error = -EAGAIN;
2492                 goto err_out;
2493         }
2494         /* @@@ should release IRQ on error */
2495         /* enabling memory + master */
2496         if ((error = pci_write_config_word(iadev->pci,
2497                                 PCI_COMMAND,
2498                                 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
2499         {
2500                 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
2501                     "master (0x%x)\n",dev->number, error);
2502                 error = -EIO;
2503                 goto err_free_irq;
2504         }
2505         udelay(10);
2506
2507         /* Maybe we should reset the front end, initialize Bus Interface Control
2508                 Registers and see. */
2509
2510         IF_INIT(printk("Bus ctrl reg: %08x\n",
2511                             readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2512         ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2513         ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))
2514                         | CTRL_B8
2515                         | CTRL_B16
2516                         | CTRL_B32
2517                         | CTRL_B48
2518                         | CTRL_B64
2519                         | CTRL_B128
2520                         | CTRL_ERRMASK
2521                         | CTRL_DLETMASK         /* shud be removed l8r */
2522                         | CTRL_DLERMASK
2523                         | CTRL_SEGMASK
2524                         | CTRL_REASSMASK
2525                         | CTRL_FEMASK
2526                         | CTRL_CSPREEMPT;
2527
2528        writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2529
2530         IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2531                            readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
2532            printk("Bus status reg after init: %08x\n",
2533                             readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
2534
2535         ia_hw_type(iadev);
2536         error = tx_init(dev);
2537         if (error)
2538                 goto err_free_irq;
2539         error = rx_init(dev);
2540         if (error)
2541                 goto err_free_tx;
2542
2543         ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2544         writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
2545         IF_INIT(printk("Bus ctrl reg after initializing: %08x\n",
2546                                readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
2547         phy = 0; /* resolve compiler complaint */
2548         IF_INIT (
2549         if ((phy=ia_phy_get(dev,0)) == 0x30)
2550                 printk("IA: pm5346,rev.%d\n",phy&0x0f);
2551         else
2552                 printk("IA: utopia,rev.%0x\n",phy);)
2553
2554         if (iadev->phy_type &  FE_25MBIT_PHY)
2555            ia_mb25_init(iadev);
2556         else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
2557            ia_suni_pm7345_init(iadev);
2558         else {
2559                 error = suni_init(dev);
2560                 if (error)
2561                         goto err_free_rx;
2562                 /*
2563                  * Enable interrupt on loss of signal
2564                  * SUNI_RSOP_CIE - 0x10
2565                  * SUNI_RSOP_CIE_LOSE - 0x04
2566                  */
2567                 ia_phy_put(dev, ia_phy_get(dev, 0x10) | 0x04, 0x10);
2568 #ifndef MODULE
2569                 error = dev->phy->start(dev);
2570                 if (error)
2571                         goto err_free_rx;
2572 #endif
2573                 /* Get iadev->carrier_detect status */
2574                 IaFrontEndIntr(iadev);
2575         }
2576         return 0;
2577
2578 err_free_rx:
2579         ia_free_rx(iadev);
2580 err_free_tx:
2581         ia_free_tx(iadev);
2582 err_free_irq:
2583         free_irq(iadev->irq, dev);
2584 err_out:
2585         return error;
2586 }
2587
2588 static void ia_close(struct atm_vcc *vcc)
2589 {
2590         DEFINE_WAIT(wait);
2591         u16 *vc_table;
2592         IADEV *iadev;
2593         struct ia_vcc *ia_vcc;
2594         struct sk_buff *skb = NULL;
2595         struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
2596         unsigned long closetime, flags;
2597
2598         iadev = INPH_IA_DEV(vcc->dev);
2599         ia_vcc = INPH_IA_VCC(vcc);
2600         if (!ia_vcc) return;
2601
2602         IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d  vci = %d\n",
2603                                               ia_vcc->vc_desc_cnt,vcc->vci);)
2604         clear_bit(ATM_VF_READY,&vcc->flags);
2605         skb_queue_head_init (&tmp_tx_backlog);
2606         skb_queue_head_init (&tmp_vcc_backlog);
2607         if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2608            iadev->close_pending++;
2609            prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
2610            schedule_timeout(50);
2611            finish_wait(&iadev->timeout_wait, &wait);
2612            spin_lock_irqsave(&iadev->tx_lock, flags);
2613            while((skb = skb_dequeue(&iadev->tx_backlog))) {
2614               if (ATM_SKB(skb)->vcc == vcc){
2615                  if (vcc->pop) vcc->pop(vcc, skb);
2616                  else dev_kfree_skb_any(skb);
2617               }
2618               else
2619                  skb_queue_tail(&tmp_tx_backlog, skb);
2620            }
2621            while((skb = skb_dequeue(&tmp_tx_backlog)))
2622              skb_queue_tail(&iadev->tx_backlog, skb);
2623            IF_EVENT(printk("IA TX Done decs_cnt = %d\n", ia_vcc->vc_desc_cnt);)
2624            closetime = 300000 / ia_vcc->pcr;
2625            if (closetime == 0)
2626               closetime = 1;
2627            spin_unlock_irqrestore(&iadev->tx_lock, flags);
2628            wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0), closetime);
2629            spin_lock_irqsave(&iadev->tx_lock, flags);
2630            iadev->close_pending--;
2631            iadev->testTable[vcc->vci]->lastTime = 0;
2632            iadev->testTable[vcc->vci]->fract = 0;
2633            iadev->testTable[vcc->vci]->vc_status = VC_UBR;
2634            if (vcc->qos.txtp.traffic_class == ATM_ABR) {
2635               if (vcc->qos.txtp.min_pcr > 0)
2636                  iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
2637            }
2638            if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2639               ia_vcc = INPH_IA_VCC(vcc);
2640               iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
2641               ia_cbrVc_close (vcc);
2642            }
2643            spin_unlock_irqrestore(&iadev->tx_lock, flags);
2644         }
2645
2646         if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2647            // reset reass table
2648            vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
2649            vc_table += vcc->vci;
2650            *vc_table = NO_AAL5_PKT;
2651            // reset vc table
2652            vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
2653            vc_table += vcc->vci;
2654            *vc_table = (vcc->vci << 6) | 15;
2655            if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
2656               struct abr_vc_table __iomem *abr_vc_table =
2657                                 (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
2658               abr_vc_table +=  vcc->vci;
2659               abr_vc_table->rdf = 0x0003;
2660               abr_vc_table->air = 0x5eb1;
2661            }
2662            // Drain the packets
2663            rx_dle_intr(vcc->dev);
2664            iadev->rx_open[vcc->vci] = NULL;
2665         }
2666         kfree(INPH_IA_VCC(vcc));
2667         ia_vcc = NULL;
2668         vcc->dev_data = NULL;
2669         clear_bit(ATM_VF_ADDR,&vcc->flags);
2670         return;
2671 }
2672
2673 static int ia_open(struct atm_vcc *vcc)
2674 {
2675         IADEV *iadev;
2676         struct ia_vcc *ia_vcc;
2677         int error;
2678         if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
2679         {
2680                 IF_EVENT(printk("ia: not partially allocated resources\n");)
2681                 vcc->dev_data = NULL;
2682         }
2683         iadev = INPH_IA_DEV(vcc->dev);
2684         if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)
2685         {
2686                 IF_EVENT(printk("iphase open: unspec part\n");)
2687                 set_bit(ATM_VF_ADDR,&vcc->flags);
2688         }
2689         if (vcc->qos.aal != ATM_AAL5)
2690                 return -EINVAL;
2691         IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n",
2692                                  vcc->dev->number, vcc->vpi, vcc->vci);)
2693
2694         /* Device dependent initialization */
2695         ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
2696         if (!ia_vcc) return -ENOMEM;
2697         vcc->dev_data = ia_vcc;
2698
2699         if ((error = open_rx(vcc)))
2700         {
2701                 IF_EVENT(printk("iadev: error in open_rx, closing\n");)
2702                 ia_close(vcc);
2703                 return error;
2704         }
2705
2706         if ((error = open_tx(vcc)))
2707         {
2708                 IF_EVENT(printk("iadev: error in open_tx, closing\n");)
2709                 ia_close(vcc);
2710                 return error;
2711         }
2712
2713         set_bit(ATM_VF_READY,&vcc->flags);
2714
2715 #if 0
2716         {
2717            static u8 first = 1;
2718            if (first) {
2719               ia_timer.expires = jiffies + 3*HZ;
2720               add_timer(&ia_timer);
2721               first = 0;
2722            }
2723         }
2724 #endif
2725         IF_EVENT(printk("ia open returning\n");)
2726         return 0;
2727 }
2728
2729 static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
2730 {
2731         IF_EVENT(printk(">ia_change_qos\n");)
2732         return 0;
2733 }
2734
2735 static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
2736 {
2737    IA_CMDBUF ia_cmds;
2738    IADEV *iadev;
2739    int i, board;
2740    u16 __user *tmps;
2741    IF_EVENT(printk(">ia_ioctl\n");)
2742    if (cmd != IA_CMD) {
2743       if (!dev->phy->ioctl) return -EINVAL;
2744       return dev->phy->ioctl(dev,cmd,arg);
2745    }
2746    if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
2747    board = ia_cmds.status;
2748    if ((board < 0) || (board > iadev_count))
2749          board = 0;
2750    iadev = ia_dev[board];
2751    switch (ia_cmds.cmd) {
2752    case MEMDUMP:
2753    {
2754         switch (ia_cmds.sub_cmd) {
2755           case MEMDUMP_DEV:
2756              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2757              if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
2758                 return -EFAULT;
2759              ia_cmds.status = 0;
2760              break;
2761           case MEMDUMP_SEGREG:
2762              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2763              tmps = (u16 __user *)ia_cmds.buf;
2764              for(i=0; i<0x80; i+=2, tmps++)
2765                 if(put_user((u16)(readl(iadev->seg_reg+i) & 0xffff), tmps)) return -EFAULT;
2766              ia_cmds.status = 0;
2767              ia_cmds.len = 0x80;
2768              break;
2769           case MEMDUMP_REASSREG:
2770              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2771              tmps = (u16 __user *)ia_cmds.buf;
2772              for(i=0; i<0x80; i+=2, tmps++)
2773                 if(put_user((u16)(readl(iadev->reass_reg+i) & 0xffff), tmps)) return -EFAULT;
2774              ia_cmds.status = 0;
2775              ia_cmds.len = 0x80;
2776              break;
2777           case MEMDUMP_FFL:
2778           {
2779              ia_regs_t       *regs_local;
2780              ffredn_t        *ffL;
2781              rfredn_t        *rfL;
2782
2783              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2784              regs_local = kmalloc(sizeof(*regs_local), GFP_KERNEL);
2785              if (!regs_local) return -ENOMEM;
2786              ffL = &regs_local->ffredn;
2787              rfL = &regs_local->rfredn;
2788              /* Copy real rfred registers into the local copy */
2789              for (i=0; i<(sizeof (rfredn_t))/4; i++)
2790                 ((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0xffff;
2791                 /* Copy real ffred registers into the local copy */
2792              for (i=0; i<(sizeof (ffredn_t))/4; i++)
2793                 ((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0xffff;
2794
2795              if (copy_to_user(ia_cmds.buf, regs_local,sizeof(ia_regs_t))) {
2796                 kfree(regs_local);
2797                 return -EFAULT;
2798              }
2799              kfree(regs_local);
2800              printk("Board %d registers dumped\n", board);
2801              ia_cmds.status = 0;
2802          }
2803              break;
2804          case READ_REG:
2805          {
2806              if (!capable(CAP_NET_ADMIN)) return -EPERM;
2807              desc_dbg(iadev);
2808              ia_cmds.status = 0;
2809          }
2810              break;
2811          case 0x6:
2812          {
2813              ia_cmds.status = 0;
2814              printk("skb = 0x%lx\n", (long)skb_peek(&iadev->tx_backlog));
2815              printk("rtn_q: 0x%lx\n",(long)ia_deque_rtn_q(&iadev->tx_return_q));
2816          }
2817              break;
2818          case 0x8:
2819          {
2820              struct k_sonet_stats *stats;
2821              stats = &PRIV(_ia_dev[board])->sonet_stats;
2822              printk("section_bip: %d\n", atomic_read(&stats->section_bip));
2823              printk("line_bip   : %d\n", atomic_read(&stats->line_bip));
2824              printk("path_bip   : %d\n", atomic_read(&stats->path_bip));
2825              printk("line_febe  : %d\n", atomic_read(&stats->line_febe));
2826              printk("path_febe  : %d\n", atomic_read(&stats->path_febe));
2827              printk("corr_hcs   : %d\n", atomic_read(&stats->corr_hcs));
2828              printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
2829              printk("tx_cells   : %d\n", atomic_read(&stats->tx_cells));
2830              printk("rx_cells   : %d\n", atomic_read(&stats->rx_cells));
2831          }
2832             ia_cmds.status = 0;
2833             break;
2834          case 0x9:
2835             if (!capable(CAP_NET_ADMIN)) return -EPERM;
2836             for (i = 1; i <= iadev->num_rx_desc; i++)
2837                free_desc(_ia_dev[board], i);
2838             writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD),
2839                                             iadev->reass_reg+REASS_MASK_REG);
2840             iadev->rxing = 1;
2841
2842             ia_cmds.status = 0;
2843             break;
2844
2845          case 0xb:
2846             if (!capable(CAP_NET_ADMIN)) return -EPERM;
2847             IaFrontEndIntr(iadev);
2848             break;
2849          case 0xa:
2850             if (!capable(CAP_NET_ADMIN)) return -EPERM;
2851          {
2852              ia_cmds.status = 0;
2853              IADebugFlag = ia_cmds.maddr;
2854              printk("New debug option loaded\n");
2855          }
2856              break;
2857          default:
2858              ia_cmds.status = 0;
2859              break;
2860       }
2861    }
2862       break;
2863    default:
2864       break;
2865
2866    }
2867    return 0;
2868 }
2869
2870 static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,
2871         void __user *optval, int optlen)
2872 {
2873         IF_EVENT(printk(">ia_getsockopt\n");)
2874         return -EINVAL;
2875 }
2876
2877 static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,
2878         void __user *optval, int optlen)
2879 {
2880         IF_EVENT(printk(">ia_setsockopt\n");)
2881         return -EINVAL;
2882 }
2883
2884 static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
2885         IADEV *iadev;
2886         struct dle *wr_ptr;
2887         struct tx_buf_desc __iomem *buf_desc_ptr;
2888         int desc;
2889         int comp_code;
2890         int total_len;
2891         struct cpcs_trailer *trailer;
2892         struct ia_vcc *iavcc;
2893
2894         iadev = INPH_IA_DEV(vcc->dev);
2895         iavcc = INPH_IA_VCC(vcc);
2896         if (!iavcc->txing) {
2897            printk("discard packet on closed VC\n");
2898            if (vcc->pop)
2899                 vcc->pop(vcc, skb);
2900            else
2901                 dev_kfree_skb_any(skb);
2902            return 0;
2903         }
2904
2905         if (skb->len > iadev->tx_buf_sz - 8) {
2906            printk("Transmit size over tx buffer size\n");
2907            if (vcc->pop)
2908                  vcc->pop(vcc, skb);
2909            else
2910                  dev_kfree_skb_any(skb);
2911           return 0;
2912         }
2913         if ((u32)skb->data & 3) {
2914            printk("Misaligned SKB\n");
2915            if (vcc->pop)
2916                  vcc->pop(vcc, skb);
2917            else
2918                  dev_kfree_skb_any(skb);
2919            return 0;
2920         }
2921         /* Get a descriptor number from our free descriptor queue
2922            We get the descr number from the TCQ now, since I am using
2923            the TCQ as a free buffer queue. Initially TCQ will be
2924            initialized with all the descriptors and is hence, full.
2925         */
2926         desc = get_desc (iadev, iavcc);
2927         if (desc == 0xffff)
2928             return 1;
2929         comp_code = desc >> 13;
2930         desc &= 0x1fff;
2931
2932         if ((desc == 0) || (desc > iadev->num_tx_desc))
2933         {
2934                 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);)
2935                 atomic_inc(&vcc->stats->tx);
2936                 if (vcc->pop)
2937                     vcc->pop(vcc, skb);
2938                 else
2939                     dev_kfree_skb_any(skb);
2940                 return 0;   /* return SUCCESS */
2941         }
2942
2943         if (comp_code)
2944         {
2945             IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n",
2946                                                             desc, comp_code);)
2947         }
2948
2949         /* remember the desc and vcc mapping */
2950         iavcc->vc_desc_cnt++;
2951         iadev->desc_tbl[desc-1].iavcc = iavcc;
2952         iadev->desc_tbl[desc-1].txskb = skb;
2953         IA_SKB_STATE(skb) = 0;
2954
2955         iadev->ffL.tcq_rd += 2;
2956         if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
2957                 iadev->ffL.tcq_rd  = iadev->ffL.tcq_st;
2958         writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
2959
2960         /* Put the descriptor number in the packet ready queue
2961                 and put the updated write pointer in the DLE field
2962         */
2963         *(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc;
2964
2965         iadev->ffL.prq_wr += 2;
2966         if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
2967                 iadev->ffL.prq_wr = iadev->ffL.prq_st;
2968
2969         /* Figure out the exact length of the packet and padding required to
2970            make it  aligned on a 48 byte boundary.  */
2971         total_len = skb->len + sizeof(struct cpcs_trailer);
2972         total_len = ((total_len + 47) / 48) * 48;
2973         IF_TX(printk("ia packet len:%d padding:%d\n", total_len, total_len - skb->len);)
2974
2975         /* Put the packet in a tx buffer */
2976         trailer = iadev->tx_buf[desc-1].cpcs;
2977         IF_TX(printk("Sent: skb = 0x%x skb->data: 0x%x len: %d, desc: %d\n",
2978                   (u32)skb, (u32)skb->data, skb->len, desc);)
2979         trailer->control = 0;
2980         /*big endian*/
2981         trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
2982         trailer->crc32 = 0;     /* not needed - dummy bytes */
2983
2984         /* Display the packet */
2985         IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n",
2986                                                         skb->len, tcnter++);
2987         xdump(skb->data, skb->len, "TX: ");
2988         printk("\n");)
2989
2990         /* Build the buffer descriptor */
2991         buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
2992         buf_desc_ptr += desc;   /* points to the corresponding entry */
2993         buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;
2994         /* Huh ? p.115 of users guide describes this as a read-only register */
2995         writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
2996         buf_desc_ptr->vc_index = vcc->vci;
2997         buf_desc_ptr->bytes = total_len;
2998
2999         if (vcc->qos.txtp.traffic_class == ATM_ABR)
3000            clear_lockup (vcc, iadev);
3001
3002         /* Build the DLE structure */
3003         wr_ptr = iadev->tx_dle_q.write;
3004         memset((caddr_t)wr_ptr, 0, sizeof(*wr_ptr));
3005         wr_ptr->sys_pkt_addr = pci_map_single(iadev->pci, skb->data,
3006                 skb->len, PCI_DMA_TODEVICE);
3007         wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) |
3008                                                   buf_desc_ptr->buf_start_lo;
3009         /* wr_ptr->bytes = swap(total_len);     didn't seem to affect ?? */
3010         wr_ptr->bytes = skb->len;
3011
3012         /* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
3013         if ((wr_ptr->bytes >> 2) == 0xb)
3014            wr_ptr->bytes = 0x30;
3015
3016         wr_ptr->mode = TX_DLE_PSI;
3017         wr_ptr->prq_wr_ptr_data = 0;
3018
3019         /* end is not to be used for the DLE q */
3020         if (++wr_ptr == iadev->tx_dle_q.end)
3021                 wr_ptr = iadev->tx_dle_q.start;
3022
3023         /* Build trailer dle */
3024         wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1].dma_addr;
3025         wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16) |
3026           buf_desc_ptr->buf_start_lo) + total_len - sizeof(struct cpcs_trailer);
3027
3028         wr_ptr->bytes = sizeof(struct cpcs_trailer);
3029         wr_ptr->mode = DMA_INT_ENABLE;
3030         wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
3031
3032         /* end is not to be used for the DLE q */
3033         if (++wr_ptr == iadev->tx_dle_q.end)
3034                 wr_ptr = iadev->tx_dle_q.start;
3035
3036         iadev->tx_dle_q.write = wr_ptr;
3037         ATM_DESC(skb) = vcc->vci;
3038         skb_queue_tail(&iadev->tx_dma_q, skb);
3039
3040         atomic_inc(&vcc->stats->tx);
3041         iadev->tx_pkt_cnt++;
3042         /* Increment transaction counter */
3043         writel(2, iadev->dma+IPHASE5575_TX_COUNTER);
3044
3045 #if 0
3046         /* add flow control logic */
3047         if (atomic_read(&vcc->stats->tx) % 20 == 0) {
3048           if (iavcc->vc_desc_cnt > 10) {
3049              vcc->tx_quota =  vcc->tx_quota * 3 / 4;
3050             printk("Tx1:  vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3051               iavcc->flow_inc = -1;
3052               iavcc->saved_tx_quota = vcc->tx_quota;
3053            } else if ((iavcc->flow_inc < 0) && (iavcc->vc_desc_cnt < 3)) {
3054              // vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
3055              printk("Tx2:  vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
3056               iavcc->flow_inc = 0;
3057            }
3058         }
3059 #endif
3060         IF_TX(printk("ia send done\n");)
3061         return 0;
3062 }
3063
3064 static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
3065 {
3066         IADEV *iadev;
3067         struct ia_vcc *iavcc;
3068         unsigned long flags;
3069
3070         iadev = INPH_IA_DEV(vcc->dev);
3071         iavcc = INPH_IA_VCC(vcc);
3072         if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
3073         {
3074             if (!skb)
3075                 printk(KERN_CRIT "null skb in ia_send\n");
3076             else dev_kfree_skb_any(skb);
3077             return -EINVAL;
3078         }
3079         spin_lock_irqsave(&iadev->tx_lock, flags);
3080         if (!test_bit(ATM_VF_READY,&vcc->flags)){
3081             dev_kfree_skb_any(skb);
3082             spin_unlock_irqrestore(&iadev->tx_lock, flags);
3083             return -EINVAL;
3084         }
3085         ATM_SKB(skb)->vcc = vcc;
3086
3087         if (skb_peek(&iadev->tx_backlog)) {
3088            skb_queue_tail(&iadev->tx_backlog, skb);
3089         }
3090         else {
3091            if (ia_pkt_tx (vcc, skb)) {
3092               skb_queue_tail(&iadev->tx_backlog, skb);
3093            }
3094         }
3095         spin_unlock_irqrestore(&iadev->tx_lock, flags);
3096         return 0;
3097
3098 }
3099
3100 static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
3101 {
3102   int   left = *pos, n;
3103   char  *tmpPtr;
3104   IADEV *iadev = INPH_IA_DEV(dev);
3105   if(!left--) {
3106      if (iadev->phy_type == FE_25MBIT_PHY) {
3107        n = sprintf(page, "  Board Type         :  Iphase5525-1KVC-128K\n");
3108        return n;
3109      }
3110      if (iadev->phy_type == FE_DS3_PHY)
3111         n = sprintf(page, "  Board Type         :  Iphase-ATM-DS3");
3112      else if (iadev->phy_type == FE_E3_PHY)
3113         n = sprintf(page, "  Board Type         :  Iphase-ATM-E3");
3114      else if (iadev->phy_type == FE_UTP_OPTION)
3115          n = sprintf(page, "  Board Type         :  Iphase-ATM-UTP155");
3116      else
3117         n = sprintf(page, "  Board Type         :  Iphase-ATM-OC3");
3118      tmpPtr = page + n;
3119      if (iadev->pci_map_size == 0x40000)
3120         n += sprintf(tmpPtr, "-1KVC-");
3121      else
3122         n += sprintf(tmpPtr, "-4KVC-");
3123      tmpPtr = page + n;
3124      if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
3125         n += sprintf(tmpPtr, "1M  \n");
3126      else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
3127         n += sprintf(tmpPtr, "512K\n");
3128      else
3129        n += sprintf(tmpPtr, "128K\n");
3130      return n;
3131   }
3132   if (!left) {
3133      return  sprintf(page, "  Number of Tx Buffer:  %u\n"
3134                            "  Size of Tx Buffer  :  %u\n"
3135                            "  Number of Rx Buffer:  %u\n"
3136                            "  Size of Rx Buffer  :  %u\n"
3137                            "  Packets Receiverd  :  %u\n"
3138                            "  Packets Transmitted:  %u\n"
3139                            "  Cells Received     :  %u\n"
3140                            "  Cells Transmitted  :  %u\n"
3141                            "  Board Dropped Cells:  %u\n"
3142                            "  Board Dropped Pkts :  %u\n",
3143                            iadev->num_tx_desc,  iadev->tx_buf_sz,
3144                            iadev->num_rx_desc,  iadev->rx_buf_sz,
3145                            iadev->rx_pkt_cnt,   iadev->tx_pkt_cnt,
3146                            iadev->rx_cell_cnt, iadev->tx_cell_cnt,
3147                            iadev->drop_rxcell, iadev->drop_rxpkt);
3148   }
3149   return 0;
3150 }
3151
3152 static const struct atmdev_ops ops = {
3153         .open           = ia_open,
3154         .close          = ia_close,
3155         .ioctl          = ia_ioctl,
3156         .getsockopt     = ia_getsockopt,
3157         .setsockopt     = ia_setsockopt,
3158         .send           = ia_send,
3159         .phy_put        = ia_phy_put,
3160         .phy_get        = ia_phy_get,
3161         .change_qos     = ia_change_qos,
3162         .proc_read      = ia_proc_read,
3163         .owner          = THIS_MODULE,
3164 };
3165
3166 static int __devinit ia_init_one(struct pci_dev *pdev,
3167                                  const struct pci_device_id *ent)
3168 {
3169         struct atm_dev *dev;
3170         IADEV *iadev;
3171         unsigned long flags;
3172         int ret;
3173
3174         iadev = kmalloc(sizeof(*iadev), GFP_KERNEL);
3175         if (!iadev) {
3176                 ret = -ENOMEM;
3177                 goto err_out;
3178         }
3179         memset(iadev, 0, sizeof(*iadev));
3180         iadev->pci = pdev;
3181
3182         IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n",
3183                 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
3184         if (pci_enable_device(pdev)) {
3185                 ret = -ENODEV;
3186                 goto err_out_free_iadev;
3187         }
3188         dev = atm_dev_register(DEV_LABEL, &ops, -1, NULL);
3189         if (!dev) {
3190                 ret = -ENOMEM;
3191                 goto err_out_disable_dev;
3192         }
3193         dev->dev_data = iadev;
3194         IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n", dev->number);)
3195         IF_INIT(printk("dev_id = 0x%x iadev->LineRate = %d \n", (u32)dev,
3196                 iadev->LineRate);)
3197
3198         ia_dev[iadev_count] = iadev;
3199         _ia_dev[iadev_count] = dev;
3200         iadev_count++;
3201         spin_lock_init(&iadev->misc_lock);
3202         /* First fixes first. I don't want to think about this now. */
3203         spin_lock_irqsave(&iadev->misc_lock, flags);
3204         if (ia_init(dev) || ia_start(dev)) {
3205                 IF_INIT(printk("IA register failed!\n");)
3206                 iadev_count--;
3207                 ia_dev[iadev_count] = NULL;
3208                 _ia_dev[iadev_count] = NULL;
3209                 spin_unlock_irqrestore(&iadev->misc_lock, flags);
3210                 ret = -EINVAL;
3211                 goto err_out_deregister_dev;
3212         }
3213         spin_unlock_irqrestore(&iadev->misc_lock, flags);
3214         IF_EVENT(printk("iadev_count = %d\n", iadev_count);)
3215
3216         iadev->next_board = ia_boards;
3217         ia_boards = dev;
3218
3219         pci_set_drvdata(pdev, dev);
3220
3221         return 0;
3222
3223 err_out_deregister_dev:
3224         atm_dev_deregister(dev);
3225 err_out_disable_dev:
3226         pci_disable_device(pdev);
3227 err_out_free_iadev:
3228         kfree(iadev);
3229 err_out:
3230         return ret;
3231 }
3232
3233 static void __devexit ia_remove_one(struct pci_dev *pdev)
3234 {
3235         struct atm_dev *dev = pci_get_drvdata(pdev);
3236         IADEV *iadev = INPH_IA_DEV(dev);
3237
3238         ia_phy_put(dev, ia_phy_get(dev,0x10) & ~(0x4), 0x10);
3239         udelay(1);
3240
3241         /* De-register device */
3242         free_irq(iadev->irq, dev);
3243         iadev_count--;
3244         ia_dev[iadev_count] = NULL;
3245         _ia_dev[iadev_count] = NULL;
3246         IF_EVENT(printk("deregistering iav at (itf:%d)\n", dev->number);)
3247         atm_dev_deregister(dev);
3248
3249         iounmap(iadev->base);
3250         pci_disable_device(pdev);
3251
3252         ia_free_rx(iadev);
3253         ia_free_tx(iadev);
3254
3255         kfree(iadev);
3256 }
3257
3258 static struct pci_device_id ia_pci_tbl[] = {
3259         { PCI_VENDOR_ID_IPHASE, 0x0008, PCI_ANY_ID, PCI_ANY_ID, },
3260         { PCI_VENDOR_ID_IPHASE, 0x0009, PCI_ANY_ID, PCI_ANY_ID, },
3261         { 0,}
3262 };
3263 MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
3264
3265 static struct pci_driver ia_driver = {
3266         .name =         DEV_LABEL,
3267         .id_table =     ia_pci_tbl,
3268         .probe =        ia_init_one,
3269         .remove =       __devexit_p(ia_remove_one),
3270 };
3271
3272 static int __init ia_module_init(void)
3273 {
3274         int ret;
3275
3276         ret = pci_register_driver(&ia_driver);
3277         if (ret >= 0) {
3278                 ia_timer.expires = jiffies + 3*HZ;
3279                 add_timer(&ia_timer);
3280         } else
3281                 printk(KERN_ERR DEV_LABEL ": no adapter found\n");
3282         return ret;
3283 }
3284
3285 static void __exit ia_module_exit(void)
3286 {
3287         pci_unregister_driver(&ia_driver);
3288
3289         del_timer(&ia_timer);
3290 }
3291
3292 module_init(ia_module_init);
3293 module_exit(ia_module_exit);