git.oblomov.eu Git - linux-2.6/blob - drivers/atm/zatm.c

   1 /* drivers/atm/zatm.c - ZeitNet ZN122x device driver */
   2
   3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
   4
   5
   6 #include <linux/config.h>
   7 #include <linux/module.h>
   8 #include <linux/sched.h>
   9 #include <linux/kernel.h>
  10 #include <linux/mm.h>
  11 #include <linux/pci.h>
  12 #include <linux/errno.h>
  13 #include <linux/atm.h>
  14 #include <linux/atmdev.h>
  15 #include <linux/sonet.h>
  16 #include <linux/skbuff.h>
  17 #include <linux/netdevice.h>
  18 #include <linux/delay.h>
  19 #include <linux/uio.h>
  20 #include <linux/init.h>
  21 #include <linux/dma-mapping.h>
  22 #include <linux/atm_zatm.h>
  23 #include <linux/capability.h>
  24 #include <linux/bitops.h>
  25 #include <linux/wait.h>
  26 #include <asm/byteorder.h>
  27 #include <asm/system.h>
  28 #include <asm/string.h>
  29 #include <asm/io.h>
  30 #include <asm/atomic.h>
  31 #include <asm/uaccess.h>
  32
  33 #include "uPD98401.h"
  34 #include "uPD98402.h"
  35 #include "zeprom.h"
  36 #include "zatm.h"
  37
  38
  39 /*
  40  * TODO:
  41  *
  42  * Minor features
  43  *  - support 64 kB SDUs (will have to use multibuffer batches then :-( )
  44  *  - proper use of CDV, credit = max(1,CDVT*PCR)
  45  *  - AAL0
  46  *  - better receive timestamps
  47  *  - OAM
  48  */
  49
  50 #define ZATM_COPPER     1
  51
  52 #if 0
  53 #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
  54 #else
  55 #define DPRINTK(format,args...)
  56 #endif
  57
  58 #ifndef CONFIG_ATM_ZATM_DEBUG
  59
  60
  61 #define NULLCHECK(x)
  62
  63 #define EVENT(s,a,b)
  64
  65
  66 static void event_dump(void)
  67 {
  68 }
  69
  70
  71 #else
  72
  73
  74 /*
  75  * NULL pointer checking
  76  */
  77
  78 #define NULLCHECK(x) \
  79   if ((unsigned long) (x) < 0x30) printk(KERN_CRIT #x "==0x%x\n", (int) (x))
  80
  81 /*
  82  * Very extensive activity logging. Greatly improves bug detection speed but
  83  * costs a few Mbps if enabled.
  84  */
  85
  86 #define EV 64
  87
  88 static const char *ev[EV];
  89 static unsigned long ev_a[EV],ev_b[EV];
  90 static int ec = 0;
  91
  92
  93 static void EVENT(const char *s,unsigned long a,unsigned long b)
  94 {
  95         ev[ec] = s;
  96         ev_a[ec] = a;
  97         ev_b[ec] = b;
  98         ec = (ec+1) % EV;
  99 }
 100
 101
 102 static void event_dump(void)
 103 {
 104         int n,i;
 105
 106         printk(KERN_NOTICE "----- event dump follows -----\n");
 107         for (n = 0; n < EV; n++) {
 108                 i = (ec+n) % EV;
 109                 printk(KERN_NOTICE);
 110                 printk(ev[i] ? ev[i] : "(null)",ev_a[i],ev_b[i]);
 111         }
 112         printk(KERN_NOTICE "----- event dump ends here -----\n");
 113 }
 114
 115
 116 #endif /* CONFIG_ATM_ZATM_DEBUG */
 117
 118
 119 #define RING_BUSY       1       /* indication from do_tx that PDU has to be
 120                                    backlogged */
 121
 122 static struct atm_dev *zatm_boards = NULL;
 123 static unsigned long dummy[2] = {0,0};
 124
 125
 126 #define zin_n(r) inl(zatm_dev->base+r*4)
 127 #define zin(r) inl(zatm_dev->base+uPD98401_##r*4)
 128 #define zout(v,r) outl(v,zatm_dev->base+uPD98401_##r*4)
 129 #define zwait while (zin(CMR) & uPD98401_BUSY)
 130
 131 /* RX0, RX1, TX0, TX1 */
 132 static const int mbx_entries[NR_MBX] = { 1024,1024,1024,1024 };
 133 static const int mbx_esize[NR_MBX] = { 16,16,4,4 }; /* entry size in bytes */
 134
 135 #define MBX_SIZE(i) (mbx_entries[i]*mbx_esize[i])
 136
 137
 138 /*-------------------------------- utilities --------------------------------*/
 139
 140
 141 static void zpokel(struct zatm_dev *zatm_dev,u32 value,u32 addr)
 142 {
 143         zwait;
 144         zout(value,CER);
 145         zout(uPD98401_IND_ACC | uPD98401_IA_BALL |
 146             (uPD98401_IA_TGT_CM << uPD98401_IA_TGT_SHIFT) | addr,CMR);
 147 }
 148
 149
 150 static u32 zpeekl(struct zatm_dev *zatm_dev,u32 addr)
 151 {
 152         zwait;
 153         zout(uPD98401_IND_ACC | uPD98401_IA_BALL | uPD98401_IA_RW |
 154           (uPD98401_IA_TGT_CM << uPD98401_IA_TGT_SHIFT) | addr,CMR);
 155         zwait;
 156         return zin(CER);
 157 }
 158
 159
 160 /*------------------------------- free lists --------------------------------*/
 161
 162
 163 /*
 164  * Free buffer head structure:
 165  *   [0] pointer to buffer (for SAR)
 166  *   [1] buffer descr link pointer (for SAR)
 167  *   [2] back pointer to skb (for poll_rx)
 168  *   [3] data
 169  *   ...
 170  */
 171
 172 struct rx_buffer_head {
 173         u32             buffer; /* pointer to buffer (for SAR) */
 174         u32             link;   /* buffer descriptor link pointer (for SAR) */
 175         struct sk_buff  *skb;   /* back pointer to skb (for poll_rx) */
 176 };
 177
 178
 179 static void refill_pool(struct atm_dev *dev,int pool)
 180 {
 181         struct zatm_dev *zatm_dev;
 182         struct sk_buff *skb;
 183         struct rx_buffer_head *first;
 184         unsigned long flags;
 185         int align,offset,free,count,size;
 186
 187         EVENT("refill_pool\n",0,0);
 188         zatm_dev = ZATM_DEV(dev);
 189         size = (64 << (pool <= ZATM_AAL5_POOL_BASE ? 0 :
 190             pool-ZATM_AAL5_POOL_BASE))+sizeof(struct rx_buffer_head);
 191         if (size < PAGE_SIZE) {
 192                 align = 32; /* for 32 byte alignment */
 193                 offset = sizeof(struct rx_buffer_head);
 194         }
 195         else {
 196                 align = 4096;
 197                 offset = zatm_dev->pool_info[pool].offset+
 198                     sizeof(struct rx_buffer_head);
 199         }
 200         size += align;
 201         spin_lock_irqsave(&zatm_dev->lock, flags);
 202         free = zpeekl(zatm_dev,zatm_dev->pool_base+2*pool) &
 203             uPD98401_RXFP_REMAIN;
 204         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 205         if (free >= zatm_dev->pool_info[pool].low_water) return;
 206         EVENT("starting ... POOL: 0x%x, 0x%x\n",
 207             zpeekl(zatm_dev,zatm_dev->pool_base+2*pool),
 208             zpeekl(zatm_dev,zatm_dev->pool_base+2*pool+1));
 209         EVENT("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
 210         count = 0;
 211         first = NULL;
 212         while (free < zatm_dev->pool_info[pool].high_water) {
 213                 struct rx_buffer_head *head;
 214
 215                 skb = alloc_skb(size,GFP_ATOMIC);
 216                 if (!skb) {
 217                         printk(KERN_WARNING DEV_LABEL "(Itf %d): got no new "
 218                             "skb (%d) with %d free\n",dev->number,size,free);
 219                         break;
 220                 }
 221                 skb_reserve(skb,(unsigned char *) ((((unsigned long) skb->data+
 222                     align+offset-1) & ~(unsigned long) (align-1))-offset)-
 223                     skb->data);
 224                 head = (struct rx_buffer_head *) skb->data;
 225                 skb_reserve(skb,sizeof(struct rx_buffer_head));
 226                 if (!first) first = head;
 227                 count++;
 228                 head->buffer = virt_to_bus(skb->data);
 229                 head->link = 0;
 230                 head->skb = skb;
 231                 EVENT("enq skb 0x%08lx/0x%08lx\n",(unsigned long) skb,
 232                     (unsigned long) head);
 233                 spin_lock_irqsave(&zatm_dev->lock, flags);
 234                 if (zatm_dev->last_free[pool])
 235                         ((struct rx_buffer_head *) (zatm_dev->last_free[pool]->
 236                             data))[-1].link = virt_to_bus(head);
 237                 zatm_dev->last_free[pool] = skb;
 238                 skb_queue_tail(&zatm_dev->pool[pool],skb);
 239                 spin_unlock_irqrestore(&zatm_dev->lock, flags);
 240                 free++;
 241         }
 242         if (first) {
 243                 spin_lock_irqsave(&zatm_dev->lock, flags);
 244                 zwait;
 245                 zout(virt_to_bus(first),CER);
 246                 zout(uPD98401_ADD_BAT | (pool << uPD98401_POOL_SHIFT) | count,
 247                     CMR);
 248                 spin_unlock_irqrestore(&zatm_dev->lock, flags);
 249                 EVENT ("POOL: 0x%x, 0x%x\n",
 250                     zpeekl(zatm_dev,zatm_dev->pool_base+2*pool),
 251                     zpeekl(zatm_dev,zatm_dev->pool_base+2*pool+1));
 252                 EVENT("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
 253         }
 254 }
 255
 256
 257 static void drain_free(struct atm_dev *dev,int pool)
 258 {
 259         skb_queue_purge(&ZATM_DEV(dev)->pool[pool]);
 260 }
 261
 262
 263 static int pool_index(int max_pdu)
 264 {
 265         int i;
 266
 267         if (max_pdu % ATM_CELL_PAYLOAD)
 268                 printk(KERN_ERR DEV_LABEL ": driver error in pool_index: "
 269                     "max_pdu is %d\n",max_pdu);
 270         if (max_pdu > 65536) return -1;
 271         for (i = 0; (64 << i) < max_pdu; i++);
 272         return i+ZATM_AAL5_POOL_BASE;
 273 }
 274
 275
 276 /* use_pool isn't reentrant */
 277
 278
 279 static void use_pool(struct atm_dev *dev,int pool)
 280 {
 281         struct zatm_dev *zatm_dev;
 282         unsigned long flags;
 283         int size;
 284
 285         zatm_dev = ZATM_DEV(dev);
 286         if (!(zatm_dev->pool_info[pool].ref_count++)) {
 287                 skb_queue_head_init(&zatm_dev->pool[pool]);
 288                 size = pool-ZATM_AAL5_POOL_BASE;
 289                 if (size < 0) size = 0; /* 64B... */
 290                 else if (size > 10) size = 10; /* ... 64kB */
 291                 spin_lock_irqsave(&zatm_dev->lock, flags);
 292                 zpokel(zatm_dev,((zatm_dev->pool_info[pool].low_water/4) <<
 293                     uPD98401_RXFP_ALERT_SHIFT) |
 294                     (1 << uPD98401_RXFP_BTSZ_SHIFT) |
 295                     (size << uPD98401_RXFP_BFSZ_SHIFT),
 296                     zatm_dev->pool_base+pool*2);
 297                 zpokel(zatm_dev,(unsigned long) dummy,zatm_dev->pool_base+
 298                     pool*2+1);
 299                 spin_unlock_irqrestore(&zatm_dev->lock, flags);
 300                 zatm_dev->last_free[pool] = NULL;
 301                 refill_pool(dev,pool);
 302         }
 303         DPRINTK("pool %d: %d\n",pool,zatm_dev->pool_info[pool].ref_count);
 304 }
 305
 306
 307 static void unuse_pool(struct atm_dev *dev,int pool)
 308 {
 309         if (!(--ZATM_DEV(dev)->pool_info[pool].ref_count))
 310                 drain_free(dev,pool);
 311 }
 312
 313 /*----------------------------------- RX ------------------------------------*/
 314
 315
 316 #if 0
 317 static void exception(struct atm_vcc *vcc)
 318 {
 319    static int count = 0;
 320    struct zatm_dev *zatm_dev = ZATM_DEV(vcc->dev);
 321    struct zatm_vcc *zatm_vcc = ZATM_VCC(vcc);
 322    unsigned long *qrp;
 323    int i;
 324
 325    if (count++ > 2) return;
 326    for (i = 0; i < 8; i++)
 327         printk("TX%d: 0x%08lx\n",i,
 328           zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+i));
 329    for (i = 0; i < 5; i++)
 330         printk("SH%d: 0x%08lx\n",i,
 331           zpeekl(zatm_dev,uPD98401_IM(zatm_vcc->shaper)+16*i));
 332    qrp = (unsigned long *) zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+
 333      uPD98401_TXVC_QRP);
 334    printk("qrp=0x%08lx\n",(unsigned long) qrp);
 335    for (i = 0; i < 4; i++) printk("QRP[%d]: 0x%08lx",i,qrp[i]);
 336 }
 337 #endif
 338
 339
 340 static const char *err_txt[] = {
 341         "No error",
 342         "RX buf underflow",
 343         "RX FIFO overrun",
 344         "Maximum len violation",
 345         "CRC error",
 346         "User abort",
 347         "Length violation",
 348         "T1 error",
 349         "Deactivated",
 350         "???",
 351         "???",
 352         "???",
 353         "???",
 354         "???",
 355         "???",
 356         "???"
 357 };
 358
 359
 360 static void poll_rx(struct atm_dev *dev,int mbx)
 361 {
 362         struct zatm_dev *zatm_dev;
 363         unsigned long pos;
 364         u32 x;
 365         int error;
 366
 367         EVENT("poll_rx\n",0,0);
 368         zatm_dev = ZATM_DEV(dev);
 369         pos = (zatm_dev->mbx_start[mbx] & ~0xffffUL) | zin(MTA(mbx));
 370         while (x = zin(MWA(mbx)), (pos & 0xffff) != x) {
 371                 u32 *here;
 372                 struct sk_buff *skb;
 373                 struct atm_vcc *vcc;
 374                 int cells,size,chan;
 375
 376                 EVENT("MBX: host 0x%lx, nic 0x%x\n",pos,x);
 377                 here = (u32 *) pos;
 378                 if (((pos += 16) & 0xffff) == zatm_dev->mbx_end[mbx])
 379                         pos = zatm_dev->mbx_start[mbx];
 380                 cells = here[0] & uPD98401_AAL5_SIZE;
 381 #if 0
 382 printk("RX IND: 0x%x, 0x%x, 0x%x, 0x%x\n",here[0],here[1],here[2],here[3]);
 383 {
 384 unsigned long *x;
 385                 printk("POOL: 0x%08x, 0x%08x\n",zpeekl(zatm_dev,
 386                       zatm_dev->pool_base),
 387                       zpeekl(zatm_dev,zatm_dev->pool_base+1));
 388                 x = (unsigned long *) here[2];
 389                 printk("[0..3] = 0x%08lx, 0x%08lx, 0x%08lx, 0x%08lx\n",
 390                     x[0],x[1],x[2],x[3]);
 391 }
 392 #endif
 393                 error = 0;
 394                 if (here[3] & uPD98401_AAL5_ERR) {
 395                         error = (here[3] & uPD98401_AAL5_ES) >>
 396                             uPD98401_AAL5_ES_SHIFT;
 397                         if (error == uPD98401_AAL5_ES_DEACT ||
 398                             error == uPD98401_AAL5_ES_FREE) continue;
 399                 }
 400 EVENT("error code 0x%x/0x%x\n",(here[3] & uPD98401_AAL5_ES) >>
 401   uPD98401_AAL5_ES_SHIFT,error);
 402                 skb = ((struct rx_buffer_head *) bus_to_virt(here[2]))->skb;
 403                 __net_timestamp(skb);
 404 #if 0
 405 printk("[-3..0] 0x%08lx 0x%08lx 0x%08lx 0x%08lx\n",((unsigned *) skb->data)[-3],
 406   ((unsigned *) skb->data)[-2],((unsigned *) skb->data)[-1],
 407   ((unsigned *) skb->data)[0]);
 408 #endif
 409                 EVENT("skb 0x%lx, here 0x%lx\n",(unsigned long) skb,
 410                     (unsigned long) here);
 411 #if 0
 412 printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
 413 #endif
 414                 size = error ? 0 : ntohs(((__be16 *) skb->data)[cells*
 415                     ATM_CELL_PAYLOAD/sizeof(u16)-3]);
 416                 EVENT("got skb 0x%lx, size %d\n",(unsigned long) skb,size);
 417                 chan = (here[3] & uPD98401_AAL5_CHAN) >>
 418                     uPD98401_AAL5_CHAN_SHIFT;
 419                 if (chan < zatm_dev->chans && zatm_dev->rx_map[chan]) {
 420                         int pos;
 421                         vcc = zatm_dev->rx_map[chan];
 422                         pos = ZATM_VCC(vcc)->pool;
 423                         if (skb == zatm_dev->last_free[pos])
 424                                 zatm_dev->last_free[pos] = NULL;
 425                         skb_unlink(skb, zatm_dev->pool + pos);
 426                 }
 427                 else {
 428                         printk(KERN_ERR DEV_LABEL "(itf %d): RX indication "
 429                             "for non-existing channel\n",dev->number);
 430                         size = 0;
 431                         vcc = NULL;
 432                         event_dump();
 433                 }
 434                 if (error) {
 435                         static unsigned long silence = 0;
 436                         static int last_error = 0;
 437
 438                         if (error != last_error ||
 439                             time_after(jiffies, silence)  || silence == 0){
 440                                 printk(KERN_WARNING DEV_LABEL "(itf %d): "
 441                                     "chan %d error %s\n",dev->number,chan,
 442                                     err_txt[error]);
 443                                 last_error = error;
 444                                 silence = (jiffies+2*HZ)|1;
 445                         }
 446                         size = 0;
 447                 }
 448                 if (size && (size > cells*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER ||
 449                     size <= (cells-1)*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER)) {
 450                         printk(KERN_ERR DEV_LABEL "(itf %d): size %d with %d "
 451                             "cells\n",dev->number,size,cells);
 452                         size = 0;
 453                         event_dump();
 454                 }
 455                 if (size > ATM_MAX_AAL5_PDU) {
 456                         printk(KERN_ERR DEV_LABEL "(itf %d): size too big "
 457                             "(%d)\n",dev->number,size);
 458                         size = 0;
 459                         event_dump();
 460                 }
 461                 if (!size) {
 462                         dev_kfree_skb_irq(skb);
 463                         if (vcc) atomic_inc(&vcc->stats->rx_err);
 464                         continue;
 465                 }
 466                 if (!atm_charge(vcc,skb->truesize)) {
 467                         dev_kfree_skb_irq(skb);
 468                         continue;
 469                 }
 470                 skb->len = size;
 471                 ATM_SKB(skb)->vcc = vcc;
 472                 vcc->push(vcc,skb);
 473                 atomic_inc(&vcc->stats->rx);
 474         }
 475         zout(pos & 0xffff,MTA(mbx));
 476 #if 0 /* probably a stupid idea */
 477         refill_pool(dev,zatm_vcc->pool);
 478                 /* maybe this saves us a few interrupts */
 479 #endif
 480 }
 481
 482
 483 static int open_rx_first(struct atm_vcc *vcc)
 484 {
 485         struct zatm_dev *zatm_dev;
 486         struct zatm_vcc *zatm_vcc;
 487         unsigned long flags;
 488         unsigned short chan;
 489         int cells;
 490
 491         DPRINTK("open_rx_first (0x%x)\n",inb_p(0xc053));
 492         zatm_dev = ZATM_DEV(vcc->dev);
 493         zatm_vcc = ZATM_VCC(vcc);
 494         zatm_vcc->rx_chan = 0;
 495         if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
 496         if (vcc->qos.aal == ATM_AAL5) {
 497                 if (vcc->qos.rxtp.max_sdu > 65464)
 498                         vcc->qos.rxtp.max_sdu = 65464;
 499                         /* fix this - we may want to receive 64kB SDUs
 500                            later */
 501                 cells = (vcc->qos.rxtp.max_sdu+ATM_AAL5_TRAILER+
 502                     ATM_CELL_PAYLOAD-1)/ATM_CELL_PAYLOAD;
 503                 zatm_vcc->pool = pool_index(cells*ATM_CELL_PAYLOAD);
 504         }
 505         else {
 506                 cells = 1;
 507                 zatm_vcc->pool = ZATM_AAL0_POOL;
 508         }
 509         if (zatm_vcc->pool < 0) return -EMSGSIZE;
 510         spin_lock_irqsave(&zatm_dev->lock, flags);
 511         zwait;
 512         zout(uPD98401_OPEN_CHAN,CMR);
 513         zwait;
 514         DPRINTK("0x%x 0x%x\n",zin(CMR),zin(CER));
 515         chan = (zin(CMR) & uPD98401_CHAN_ADDR) >> uPD98401_CHAN_ADDR_SHIFT;
 516         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 517         DPRINTK("chan is %d\n",chan);
 518         if (!chan) return -EAGAIN;
 519         use_pool(vcc->dev,zatm_vcc->pool);
 520         DPRINTK("pool %d\n",zatm_vcc->pool);
 521         /* set up VC descriptor */
 522         spin_lock_irqsave(&zatm_dev->lock, flags);
 523         zpokel(zatm_dev,zatm_vcc->pool << uPD98401_RXVC_POOL_SHIFT,
 524             chan*VC_SIZE/4);
 525         zpokel(zatm_dev,uPD98401_RXVC_OD | (vcc->qos.aal == ATM_AAL5 ?
 526             uPD98401_RXVC_AR : 0) | cells,chan*VC_SIZE/4+1);
 527         zpokel(zatm_dev,0,chan*VC_SIZE/4+2);
 528         zatm_vcc->rx_chan = chan;
 529         zatm_dev->rx_map[chan] = vcc;
 530         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 531         return 0;
 532 }
 533
 534
 535 static int open_rx_second(struct atm_vcc *vcc)
 536 {
 537         struct zatm_dev *zatm_dev;
 538         struct zatm_vcc *zatm_vcc;
 539         unsigned long flags;
 540         int pos,shift;
 541
 542         DPRINTK("open_rx_second (0x%x)\n",inb_p(0xc053));
 543         zatm_dev = ZATM_DEV(vcc->dev);
 544         zatm_vcc = ZATM_VCC(vcc);
 545         if (!zatm_vcc->rx_chan) return 0;
 546         spin_lock_irqsave(&zatm_dev->lock, flags);
 547         /* should also handle VPI @@@ */
 548         pos = vcc->vci >> 1;
 549         shift = (1-(vcc->vci & 1)) << 4;
 550         zpokel(zatm_dev,(zpeekl(zatm_dev,pos) & ~(0xffff << shift)) |
 551             ((zatm_vcc->rx_chan | uPD98401_RXLT_ENBL) << shift),pos);
 552         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 553         return 0;
 554 }
 555
 556
 557 static void close_rx(struct atm_vcc *vcc)
 558 {
 559         struct zatm_dev *zatm_dev;
 560         struct zatm_vcc *zatm_vcc;
 561         unsigned long flags;
 562         int pos,shift;
 563
 564         zatm_vcc = ZATM_VCC(vcc);
 565         zatm_dev = ZATM_DEV(vcc->dev);
 566         if (!zatm_vcc->rx_chan) return;
 567         DPRINTK("close_rx\n");
 568         /* disable receiver */
 569         if (vcc->vpi != ATM_VPI_UNSPEC && vcc->vci != ATM_VCI_UNSPEC) {
 570                 spin_lock_irqsave(&zatm_dev->lock, flags);
 571                 pos = vcc->vci >> 1;
 572                 shift = (1-(vcc->vci & 1)) << 4;
 573                 zpokel(zatm_dev,zpeekl(zatm_dev,pos) & ~(0xffff << shift),pos);
 574                 zwait;
 575                 zout(uPD98401_NOP,CMR);
 576                 zwait;
 577                 zout(uPD98401_NOP,CMR);
 578                 spin_unlock_irqrestore(&zatm_dev->lock, flags);
 579         }
 580         spin_lock_irqsave(&zatm_dev->lock, flags);
 581         zwait;
 582         zout(uPD98401_DEACT_CHAN | uPD98401_CHAN_RT | (zatm_vcc->rx_chan <<
 583             uPD98401_CHAN_ADDR_SHIFT),CMR);
 584         zwait;
 585         udelay(10); /* why oh why ... ? */
 586         zout(uPD98401_CLOSE_CHAN | uPD98401_CHAN_RT | (zatm_vcc->rx_chan <<
 587             uPD98401_CHAN_ADDR_SHIFT),CMR);
 588         zwait;
 589         if (!(zin(CMR) & uPD98401_CHAN_ADDR))
 590                 printk(KERN_CRIT DEV_LABEL "(itf %d): can't close RX channel "
 591                     "%d\n",vcc->dev->number,zatm_vcc->rx_chan);
 592         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 593         zatm_dev->rx_map[zatm_vcc->rx_chan] = NULL;
 594         zatm_vcc->rx_chan = 0;
 595         unuse_pool(vcc->dev,zatm_vcc->pool);
 596 }
 597
 598
 599 static int start_rx(struct atm_dev *dev)
 600 {
 601         struct zatm_dev *zatm_dev;
 602         int size,i;
 603
 604 DPRINTK("start_rx\n");
 605         zatm_dev = ZATM_DEV(dev);
 606         size = sizeof(struct atm_vcc *)*zatm_dev->chans;
 607         zatm_dev->rx_map = (struct atm_vcc **) kmalloc(size,GFP_KERNEL);
 608         if (!zatm_dev->rx_map) return -ENOMEM;
 609         memset(zatm_dev->rx_map,0,size);
 610         /* set VPI/VCI split (use all VCIs and give what's left to VPIs) */
 611         zpokel(zatm_dev,(1 << dev->ci_range.vci_bits)-1,uPD98401_VRR);
 612         /* prepare free buffer pools */
 613         for (i = 0; i <= ZATM_LAST_POOL; i++) {
 614                 zatm_dev->pool_info[i].ref_count = 0;
 615                 zatm_dev->pool_info[i].rqa_count = 0;
 616                 zatm_dev->pool_info[i].rqu_count = 0;
 617                 zatm_dev->pool_info[i].low_water = LOW_MARK;
 618                 zatm_dev->pool_info[i].high_water = HIGH_MARK;
 619                 zatm_dev->pool_info[i].offset = 0;
 620                 zatm_dev->pool_info[i].next_off = 0;
 621                 zatm_dev->pool_info[i].next_cnt = 0;
 622                 zatm_dev->pool_info[i].next_thres = OFF_CNG_THRES;
 623         }
 624         return 0;
 625 }
 626
 627
 628 /*----------------------------------- TX ------------------------------------*/
 629
 630
 631 static int do_tx(struct sk_buff *skb)
 632 {
 633         struct atm_vcc *vcc;
 634         struct zatm_dev *zatm_dev;
 635         struct zatm_vcc *zatm_vcc;
 636         u32 *dsc;
 637         unsigned long flags;
 638
 639         EVENT("do_tx\n",0,0);
 640         DPRINTK("sending skb %p\n",skb);
 641         vcc = ATM_SKB(skb)->vcc;
 642         zatm_dev = ZATM_DEV(vcc->dev);
 643         zatm_vcc = ZATM_VCC(vcc);
 644         EVENT("iovcnt=%d\n",skb_shinfo(skb)->nr_frags,0);
 645         spin_lock_irqsave(&zatm_dev->lock, flags);
 646         if (!skb_shinfo(skb)->nr_frags) {
 647                 if (zatm_vcc->txing == RING_ENTRIES-1) {
 648                         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 649                         return RING_BUSY;
 650                 }
 651                 zatm_vcc->txing++;
 652                 dsc = zatm_vcc->ring+zatm_vcc->ring_curr;
 653                 zatm_vcc->ring_curr = (zatm_vcc->ring_curr+RING_WORDS) &
 654                     (RING_ENTRIES*RING_WORDS-1);
 655                 dsc[1] = 0;
 656                 dsc[2] = skb->len;
 657                 dsc[3] = virt_to_bus(skb->data);
 658                 mb();
 659                 dsc[0] = uPD98401_TXPD_V | uPD98401_TXPD_DP | uPD98401_TXPD_SM
 660                     | (vcc->qos.aal == ATM_AAL5 ? uPD98401_TXPD_AAL5 : 0 |
 661                     (ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ?
 662                     uPD98401_CLPM_1 : uPD98401_CLPM_0));
 663                 EVENT("dsc (0x%lx)\n",(unsigned long) dsc,0);
 664         }
 665         else {
 666 printk("NONONONOO!!!!\n");
 667                 dsc = NULL;
 668 #if 0
 669                 u32 *put;
 670                 int i;
 671
 672                 dsc = kmalloc(uPD98401_TXPD_SIZE * 2 +
 673                         uPD98401_TXBD_SIZE * ATM_SKB(skb)->iovcnt, GFP_ATOMIC);
 674                 if (!dsc) {
 675                         if (vcc->pop)
 676                                 vcc->pop(vcc, skb);
 677                         else
 678                                 dev_kfree_skb_irq(skb);
 679                         return -EAGAIN;
 680                 }
 681                 /* @@@ should check alignment */
 682                 put = dsc+8;
 683                 dsc[0] = uPD98401_TXPD_V | uPD98401_TXPD_DP |
 684                     (vcc->aal == ATM_AAL5 ? uPD98401_TXPD_AAL5 : 0 |
 685                     (ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ?
 686                     uPD98401_CLPM_1 : uPD98401_CLPM_0));
 687                 dsc[1] = 0;
 688                 dsc[2] = ATM_SKB(skb)->iovcnt * uPD98401_TXBD_SIZE;
 689                 dsc[3] = virt_to_bus(put);
 690                 for (i = 0; i < ATM_SKB(skb)->iovcnt; i++) {
 691                         *put++ = ((struct iovec *) skb->data)[i].iov_len;
 692                         *put++ = virt_to_bus(((struct iovec *)
 693                             skb->data)[i].iov_base);
 694                 }
 695                 put[-2] |= uPD98401_TXBD_LAST;
 696 #endif
 697         }
 698         ZATM_PRV_DSC(skb) = dsc;
 699         skb_queue_tail(&zatm_vcc->tx_queue,skb);
 700         DPRINTK("QRP=0x%08lx\n",zpeekl(zatm_dev,zatm_vcc->tx_chan*VC_SIZE/4+
 701           uPD98401_TXVC_QRP));
 702         zwait;
 703         zout(uPD98401_TX_READY | (zatm_vcc->tx_chan <<
 704             uPD98401_CHAN_ADDR_SHIFT),CMR);
 705         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 706         EVENT("done\n",0,0);
 707         return 0;
 708 }
 709
 710
 711 static inline void dequeue_tx(struct atm_vcc *vcc)
 712 {
 713         struct zatm_vcc *zatm_vcc;
 714         struct sk_buff *skb;
 715
 716         EVENT("dequeue_tx\n",0,0);
 717         zatm_vcc = ZATM_VCC(vcc);
 718         skb = skb_dequeue(&zatm_vcc->tx_queue);
 719         if (!skb) {
 720                 printk(KERN_CRIT DEV_LABEL "(itf %d): dequeue_tx but not "
 721                     "txing\n",vcc->dev->number);
 722                 return;
 723         }
 724 #if 0 /* @@@ would fail on CLP */
 725 if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD_V | uPD98401_TXPD_DP |
 726   uPD98401_TXPD_SM | uPD98401_TXPD_AAL5)) printk("@#*$!!!!  (%08x)\n",
 727   *ZATM_PRV_DSC(skb));
 728 #endif
 729         *ZATM_PRV_DSC(skb) = 0; /* mark as invalid */
 730         zatm_vcc->txing--;
 731         if (vcc->pop) vcc->pop(vcc,skb);
 732         else dev_kfree_skb_irq(skb);
 733         while ((skb = skb_dequeue(&zatm_vcc->backlog)))
 734                 if (do_tx(skb) == RING_BUSY) {
 735                         skb_queue_head(&zatm_vcc->backlog,skb);
 736                         break;
 737                 }
 738         atomic_inc(&vcc->stats->tx);
 739         wake_up(&zatm_vcc->tx_wait);
 740 }
 741
 742
 743 static void poll_tx(struct atm_dev *dev,int mbx)
 744 {
 745         struct zatm_dev *zatm_dev;
 746         unsigned long pos;
 747         u32 x;
 748
 749         EVENT("poll_tx\n",0,0);
 750         zatm_dev = ZATM_DEV(dev);
 751         pos = (zatm_dev->mbx_start[mbx] & ~0xffffUL) | zin(MTA(mbx));
 752         while (x = zin(MWA(mbx)), (pos & 0xffff) != x) {
 753                 int chan;
 754
 755 #if 1
 756                 u32 data,*addr;
 757
 758                 EVENT("MBX: host 0x%lx, nic 0x%x\n",pos,x);
 759                 addr = (u32 *) pos;
 760                 data = *addr;
 761                 chan = (data & uPD98401_TXI_CONN) >> uPD98401_TXI_CONN_SHIFT;
 762                 EVENT("addr = 0x%lx, data = 0x%08x,",(unsigned long) addr,
 763                     data);
 764                 EVENT("chan = %d\n",chan,0);
 765 #else
 766 NO !
 767                 chan = (zatm_dev->mbx_start[mbx][pos >> 2] & uPD98401_TXI_CONN)
 768                 >> uPD98401_TXI_CONN_SHIFT;
 769 #endif
 770                 if (chan < zatm_dev->chans && zatm_dev->tx_map[chan])
 771                         dequeue_tx(zatm_dev->tx_map[chan]);
 772                 else {
 773                         printk(KERN_CRIT DEV_LABEL "(itf %d): TX indication "
 774                             "for non-existing channel %d\n",dev->number,chan);
 775                         event_dump();
 776                 }
 777                 if (((pos += 4) & 0xffff) == zatm_dev->mbx_end[mbx])
 778                         pos = zatm_dev->mbx_start[mbx];
 779         }
 780         zout(pos & 0xffff,MTA(mbx));
 781 }
 782
 783
 784 /*
 785  * BUG BUG BUG: Doesn't handle "new-style" rate specification yet.
 786  */
 787
 788 static int alloc_shaper(struct atm_dev *dev,int *pcr,int min,int max,int ubr)
 789 {
 790         struct zatm_dev *zatm_dev;
 791         unsigned long flags;
 792         unsigned long i,m,c;
 793         int shaper;
 794
 795         DPRINTK("alloc_shaper (min = %d, max = %d)\n",min,max);
 796         zatm_dev = ZATM_DEV(dev);
 797         if (!zatm_dev->free_shapers) return -EAGAIN;
 798         for (shaper = 0; !((zatm_dev->free_shapers >> shaper) & 1); shaper++);
 799         zatm_dev->free_shapers &= ~1 << shaper;
 800         if (ubr) {
 801                 c = 5;
 802                 i = m = 1;
 803                 zatm_dev->ubr_ref_cnt++;
 804                 zatm_dev->ubr = shaper;
 805         }
 806         else {
 807                 if (min) {
 808                         if (min <= 255) {
 809                                 i = min;
 810                                 m = ATM_OC3_PCR;
 811                         }
 812                         else {
 813                                 i = 255;
 814                                 m = ATM_OC3_PCR*255/min;
 815                         }
 816                 }
 817                 else {
 818                         if (max > zatm_dev->tx_bw) max = zatm_dev->tx_bw;
 819                         if (max <= 255) {
 820                                 i = max;
 821                                 m = ATM_OC3_PCR;
 822                         }
 823                         else {
 824                                 i = 255;
 825                                 m = (ATM_OC3_PCR*255+max-1)/max;
 826                         }
 827                 }
 828                 if (i > m) {
 829                         printk(KERN_CRIT DEV_LABEL "shaper algorithm botched "
 830                             "[%d,%d] -> i=%ld,m=%ld\n",min,max,i,m);
 831                         m = i;
 832                 }
 833                 *pcr = i*ATM_OC3_PCR/m;
 834                 c = 20; /* @@@ should use max_cdv ! */
 835                 if ((min && *pcr < min) || (max && *pcr > max)) return -EINVAL;
 836                 if (zatm_dev->tx_bw < *pcr) return -EAGAIN;
 837                 zatm_dev->tx_bw -= *pcr;
 838         }
 839         spin_lock_irqsave(&zatm_dev->lock, flags);
 840         DPRINTK("i = %d, m = %d, PCR = %d\n",i,m,*pcr);
 841         zpokel(zatm_dev,(i << uPD98401_IM_I_SHIFT) | m,uPD98401_IM(shaper));
 842         zpokel(zatm_dev,c << uPD98401_PC_C_SHIFT,uPD98401_PC(shaper));
 843         zpokel(zatm_dev,0,uPD98401_X(shaper));
 844         zpokel(zatm_dev,0,uPD98401_Y(shaper));
 845         zpokel(zatm_dev,uPD98401_PS_E,uPD98401_PS(shaper));
 846         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 847         return shaper;
 848 }
 849
 850
 851 static void dealloc_shaper(struct atm_dev *dev,int shaper)
 852 {
 853         struct zatm_dev *zatm_dev;
 854         unsigned long flags;
 855
 856         zatm_dev = ZATM_DEV(dev);
 857         if (shaper == zatm_dev->ubr) {
 858                 if (--zatm_dev->ubr_ref_cnt) return;
 859                 zatm_dev->ubr = -1;
 860         }
 861         spin_lock_irqsave(&zatm_dev->lock, flags);
 862         zpokel(zatm_dev,zpeekl(zatm_dev,uPD98401_PS(shaper)) & ~uPD98401_PS_E,
 863             uPD98401_PS(shaper));
 864         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 865         zatm_dev->free_shapers |= 1 << shaper;
 866 }
 867
 868
 869 static void close_tx(struct atm_vcc *vcc)
 870 {
 871         struct zatm_dev *zatm_dev;
 872         struct zatm_vcc *zatm_vcc;
 873         unsigned long flags;
 874         int chan;
 875
 876         zatm_vcc = ZATM_VCC(vcc);
 877         zatm_dev = ZATM_DEV(vcc->dev);
 878         chan = zatm_vcc->tx_chan;
 879         if (!chan) return;
 880         DPRINTK("close_tx\n");
 881         if (skb_peek(&zatm_vcc->backlog)) {
 882                 printk("waiting for backlog to drain ...\n");
 883                 event_dump();
 884                 wait_event(zatm_vcc->tx_wait, !skb_peek(&zatm_vcc->backlog));
 885         }
 886         if (skb_peek(&zatm_vcc->tx_queue)) {
 887                 printk("waiting for TX queue to drain ...\n");
 888                 event_dump();
 889                 wait_event(zatm_vcc->tx_wait, !skb_peek(&zatm_vcc->tx_queue));
 890         }
 891         spin_lock_irqsave(&zatm_dev->lock, flags);
 892 #if 0
 893         zwait;
 894         zout(uPD98401_DEACT_CHAN | (chan << uPD98401_CHAN_ADDR_SHIFT),CMR);
 895 #endif
 896         zwait;
 897         zout(uPD98401_CLOSE_CHAN | (chan << uPD98401_CHAN_ADDR_SHIFT),CMR);
 898         zwait;
 899         if (!(zin(CMR) & uPD98401_CHAN_ADDR))
 900                 printk(KERN_CRIT DEV_LABEL "(itf %d): can't close TX channel "
 901                     "%d\n",vcc->dev->number,chan);
 902         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 903         zatm_vcc->tx_chan = 0;
 904         zatm_dev->tx_map[chan] = NULL;
 905         if (zatm_vcc->shaper != zatm_dev->ubr) {
 906                 zatm_dev->tx_bw += vcc->qos.txtp.min_pcr;
 907                 dealloc_shaper(vcc->dev,zatm_vcc->shaper);
 908         }
 909         kfree(zatm_vcc->ring);
 910 }
 911
 912
 913 static int open_tx_first(struct atm_vcc *vcc)
 914 {
 915         struct zatm_dev *zatm_dev;
 916         struct zatm_vcc *zatm_vcc;
 917         unsigned long flags;
 918         u32 *loop;
 919         unsigned short chan;
 920         int pcr,unlimited;
 921
 922         DPRINTK("open_tx_first\n");
 923         zatm_dev = ZATM_DEV(vcc->dev);
 924         zatm_vcc = ZATM_VCC(vcc);
 925         zatm_vcc->tx_chan = 0;
 926         if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
 927         spin_lock_irqsave(&zatm_dev->lock, flags);
 928         zwait;
 929         zout(uPD98401_OPEN_CHAN,CMR);
 930         zwait;
 931         DPRINTK("0x%x 0x%x\n",zin(CMR),zin(CER));
 932         chan = (zin(CMR) & uPD98401_CHAN_ADDR) >> uPD98401_CHAN_ADDR_SHIFT;
 933         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 934         DPRINTK("chan is %d\n",chan);
 935         if (!chan) return -EAGAIN;
 936         unlimited = vcc->qos.txtp.traffic_class == ATM_UBR &&
 937             (!vcc->qos.txtp.max_pcr || vcc->qos.txtp.max_pcr == ATM_MAX_PCR ||
 938             vcc->qos.txtp.max_pcr >= ATM_OC3_PCR);
 939         if (unlimited && zatm_dev->ubr != -1) zatm_vcc->shaper = zatm_dev->ubr;
 940         else {
 941                 if (unlimited) vcc->qos.txtp.max_sdu = ATM_MAX_AAL5_PDU;
 942                 if ((zatm_vcc->shaper = alloc_shaper(vcc->dev,&pcr,
 943                     vcc->qos.txtp.min_pcr,vcc->qos.txtp.max_pcr,unlimited))
 944                     < 0) {
 945                         close_tx(vcc);
 946                         return zatm_vcc->shaper;
 947                 }
 948                 if (pcr > ATM_OC3_PCR) pcr = ATM_OC3_PCR;
 949                 vcc->qos.txtp.min_pcr = vcc->qos.txtp.max_pcr = pcr;
 950         }
 951         zatm_vcc->tx_chan = chan;
 952         skb_queue_head_init(&zatm_vcc->tx_queue);
 953         init_waitqueue_head(&zatm_vcc->tx_wait);
 954         /* initialize ring */
 955         zatm_vcc->ring = kmalloc(RING_SIZE,GFP_KERNEL);
 956         if (!zatm_vcc->ring) return -ENOMEM;
 957         memset(zatm_vcc->ring,0,RING_SIZE);
 958         loop = zatm_vcc->ring+RING_ENTRIES*RING_WORDS;
 959         loop[0] = uPD98401_TXPD_V;
 960         loop[1] = loop[2] = 0;
 961         loop[3] = virt_to_bus(zatm_vcc->ring);
 962         zatm_vcc->ring_curr = 0;
 963         zatm_vcc->txing = 0;
 964         skb_queue_head_init(&zatm_vcc->backlog);
 965         zpokel(zatm_dev,virt_to_bus(zatm_vcc->ring),
 966             chan*VC_SIZE/4+uPD98401_TXVC_QRP);
 967         return 0;
 968 }
 969
 970
 971 static int open_tx_second(struct atm_vcc *vcc)
 972 {
 973         struct zatm_dev *zatm_dev;
 974         struct zatm_vcc *zatm_vcc;
 975         unsigned long flags;
 976
 977         DPRINTK("open_tx_second\n");
 978         zatm_dev = ZATM_DEV(vcc->dev);
 979         zatm_vcc = ZATM_VCC(vcc);
 980         if (!zatm_vcc->tx_chan) return 0;
 981         /* set up VC descriptor */
 982         spin_lock_irqsave(&zatm_dev->lock, flags);
 983         zpokel(zatm_dev,0,zatm_vcc->tx_chan*VC_SIZE/4);
 984         zpokel(zatm_dev,uPD98401_TXVC_L | (zatm_vcc->shaper <<
 985             uPD98401_TXVC_SHP_SHIFT) | (vcc->vpi << uPD98401_TXVC_VPI_SHIFT) |
 986             vcc->vci,zatm_vcc->tx_chan*VC_SIZE/4+1);
 987         zpokel(zatm_dev,0,zatm_vcc->tx_chan*VC_SIZE/4+2);
 988         spin_unlock_irqrestore(&zatm_dev->lock, flags);
 989         zatm_dev->tx_map[zatm_vcc->tx_chan] = vcc;
 990         return 0;
 991 }
 992
 993
 994 static int start_tx(struct atm_dev *dev)
 995 {
 996         struct zatm_dev *zatm_dev;
 997         int i;
 998
 999         DPRINTK("start_tx\n");
1000         zatm_dev = ZATM_DEV(dev);
1001         zatm_dev->tx_map = (struct atm_vcc **) kmalloc(sizeof(struct atm_vcc *)*
1002             zatm_dev->chans,GFP_KERNEL);
1003         if (!zatm_dev->tx_map) return -ENOMEM;
1004         zatm_dev->tx_bw = ATM_OC3_PCR;
1005         zatm_dev->free_shapers = (1 << NR_SHAPERS)-1;
1006         zatm_dev->ubr = -1;
1007         zatm_dev->ubr_ref_cnt = 0;
1008         /* initialize shapers */
1009         for (i = 0; i < NR_SHAPERS; i++) zpokel(zatm_dev,0,uPD98401_PS(i));
1010         return 0;
1011 }
1012
1013
1014 /*------------------------------- interrupts --------------------------------*/
1015
1016
1017 static irqreturn_t zatm_int(int irq,void *dev_id,struct pt_regs *regs)
1018 {
1019         struct atm_dev *dev;
1020         struct zatm_dev *zatm_dev;
1021         u32 reason;
1022         int handled = 0;
1023
1024         dev = dev_id;
1025         zatm_dev = ZATM_DEV(dev);
1026         while ((reason = zin(GSR))) {
1027                 handled = 1;
1028                 EVENT("reason 0x%x\n",reason,0);
1029                 if (reason & uPD98401_INT_PI) {
1030                         EVENT("PHY int\n",0,0);
1031                         dev->phy->interrupt(dev);
1032                 }
1033                 if (reason & uPD98401_INT_RQA) {
1034                         unsigned long pools;
1035                         int i;
1036
1037                         pools = zin(RQA);
1038                         EVENT("RQA (0x%08x)\n",pools,0);
1039                         for (i = 0; pools; i++) {
1040                                 if (pools & 1) {
1041                                         refill_pool(dev,i);
1042                                         zatm_dev->pool_info[i].rqa_count++;
1043                                 }
1044                                 pools >>= 1;
1045                         }
1046                 }
1047                 if (reason & uPD98401_INT_RQU) {
1048                         unsigned long pools;
1049                         int i;
1050                         pools = zin(RQU);
1051                         printk(KERN_WARNING DEV_LABEL "(itf %d): RQU 0x%08lx\n",
1052                             dev->number,pools);
1053                         event_dump();
1054                         for (i = 0; pools; i++) {
1055                                 if (pools & 1) {
1056                                         refill_pool(dev,i);
1057                                         zatm_dev->pool_info[i].rqu_count++;
1058                                 }
1059                                 pools >>= 1;
1060                         }
1061                 }
1062                 /* don't handle RD */
1063                 if (reason & uPD98401_INT_SPE)
1064                         printk(KERN_ALERT DEV_LABEL "(itf %d): system parity "
1065                             "error at 0x%08x\n",dev->number,zin(ADDR));
1066                 if (reason & uPD98401_INT_CPE)
1067                         printk(KERN_ALERT DEV_LABEL "(itf %d): control memory "
1068                             "parity error at 0x%08x\n",dev->number,zin(ADDR));
1069                 if (reason & uPD98401_INT_SBE) {
1070                         printk(KERN_ALERT DEV_LABEL "(itf %d): system bus "
1071                             "error at 0x%08x\n",dev->number,zin(ADDR));
1072                         event_dump();
1073                 }
1074                 /* don't handle IND */
1075                 if (reason & uPD98401_INT_MF) {
1076                         printk(KERN_CRIT DEV_LABEL "(itf %d): mailbox full "
1077                             "(0x%x)\n",dev->number,(reason & uPD98401_INT_MF)
1078                             >> uPD98401_INT_MF_SHIFT);
1079                         event_dump();
1080                             /* @@@ should try to recover */
1081                 }
1082                 if (reason & uPD98401_INT_MM) {
1083                         if (reason & 1) poll_rx(dev,0);
1084                         if (reason & 2) poll_rx(dev,1);
1085                         if (reason & 4) poll_tx(dev,2);
1086                         if (reason & 8) poll_tx(dev,3);
1087                 }
1088                 /* @@@ handle RCRn */
1089         }
1090         return IRQ_RETVAL(handled);
1091 }
1092
1093
1094 /*----------------------------- (E)EPROM access -----------------------------*/
1095
1096
1097 static void __devinit eprom_set(struct zatm_dev *zatm_dev,unsigned long value,
1098     unsigned short cmd)
1099 {
1100         int error;
1101
1102         if ((error = pci_write_config_dword(zatm_dev->pci_dev,cmd,value)))
1103                 printk(KERN_ERR DEV_LABEL ": PCI write failed (0x%02x)\n",
1104                     error);
1105 }
1106
1107
1108 static unsigned long __devinit eprom_get(struct zatm_dev *zatm_dev,
1109     unsigned short cmd)
1110 {
1111         unsigned int value;
1112         int error;
1113
1114         if ((error = pci_read_config_dword(zatm_dev->pci_dev,cmd,&value)))
1115                 printk(KERN_ERR DEV_LABEL ": PCI read failed (0x%02x)\n",
1116                     error);
1117         return value;
1118 }
1119
1120
1121 static void __devinit eprom_put_bits(struct zatm_dev *zatm_dev,
1122     unsigned long data,int bits,unsigned short cmd)
1123 {
1124         unsigned long value;
1125         int i;
1126
1127         for (i = bits-1; i >= 0; i--) {
1128                 value = ZEPROM_CS | (((data >> i) & 1) ? ZEPROM_DI : 0);
1129                 eprom_set(zatm_dev,value,cmd);
1130                 eprom_set(zatm_dev,value | ZEPROM_SK,cmd);
1131                 eprom_set(zatm_dev,value,cmd);
1132         }
1133 }
1134
1135
1136 static void __devinit eprom_get_byte(struct zatm_dev *zatm_dev,
1137     unsigned char *byte,unsigned short cmd)
1138 {
1139         int i;
1140
1141         *byte = 0;
1142         for (i = 8; i; i--) {
1143                 eprom_set(zatm_dev,ZEPROM_CS,cmd);
1144                 eprom_set(zatm_dev,ZEPROM_CS | ZEPROM_SK,cmd);
1145                 *byte <<= 1;
1146                 if (eprom_get(zatm_dev,cmd) & ZEPROM_DO) *byte |= 1;
1147                 eprom_set(zatm_dev,ZEPROM_CS,cmd);
1148         }
1149 }
1150
1151
1152 static unsigned char __devinit eprom_try_esi(struct atm_dev *dev,
1153     unsigned short cmd,int offset,int swap)
1154 {
1155         unsigned char buf[ZEPROM_SIZE];
1156         struct zatm_dev *zatm_dev;
1157         int i;
1158
1159         zatm_dev = ZATM_DEV(dev);
1160         for (i = 0; i < ZEPROM_SIZE; i += 2) {
1161                 eprom_set(zatm_dev,ZEPROM_CS,cmd); /* select EPROM */
1162                 eprom_put_bits(zatm_dev,ZEPROM_CMD_READ,ZEPROM_CMD_LEN,cmd);
1163                 eprom_put_bits(zatm_dev,i >> 1,ZEPROM_ADDR_LEN,cmd);
1164                 eprom_get_byte(zatm_dev,buf+i+swap,cmd);
1165                 eprom_get_byte(zatm_dev,buf+i+1-swap,cmd);
1166                 eprom_set(zatm_dev,0,cmd); /* deselect EPROM */
1167         }
1168         memcpy(dev->esi,buf+offset,ESI_LEN);
1169         return memcmp(dev->esi,"\0\0\0\0\0",ESI_LEN); /* assumes ESI_LEN == 6 */
1170 }
1171
1172
1173 static void __devinit eprom_get_esi(struct atm_dev *dev)
1174 {
1175         if (eprom_try_esi(dev,ZEPROM_V1_REG,ZEPROM_V1_ESI_OFF,1)) return;
1176         (void) eprom_try_esi(dev,ZEPROM_V2_REG,ZEPROM_V2_ESI_OFF,0);
1177 }
1178
1179
1180 /*--------------------------------- entries ---------------------------------*/
1181
1182
1183 static int __init zatm_init(struct atm_dev *dev)
1184 {
1185         struct zatm_dev *zatm_dev;
1186         struct pci_dev *pci_dev;
1187         unsigned short command;
1188         unsigned char revision;
1189         int error,i,last;
1190         unsigned long t0,t1,t2;
1191
1192         DPRINTK(">zatm_init\n");
1193         zatm_dev = ZATM_DEV(dev);
1194         spin_lock_init(&zatm_dev->lock);
1195         pci_dev = zatm_dev->pci_dev;
1196         zatm_dev->base = pci_resource_start(pci_dev, 0);
1197         zatm_dev->irq = pci_dev->irq;
1198         if ((error = pci_read_config_word(pci_dev,PCI_COMMAND,&command)) ||
1199             (error = pci_read_config_byte(pci_dev,PCI_REVISION_ID,&revision))) {
1200                 printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%02x\n",
1201                     dev->number,error);
1202                 return -EINVAL;
1203         }
1204         if ((error = pci_write_config_word(pci_dev,PCI_COMMAND,
1205             command | PCI_COMMAND_IO | PCI_COMMAND_MASTER))) {
1206                 printk(KERN_ERR DEV_LABEL "(itf %d): can't enable IO (0x%02x)"
1207                     "\n",dev->number,error);
1208                 return -EIO;
1209         }
1210         eprom_get_esi(dev);
1211         printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%x,irq=%d,",
1212             dev->number,revision,zatm_dev->base,zatm_dev->irq);
1213         /* reset uPD98401 */
1214         zout(0,SWR);
1215         while (!(zin(GSR) & uPD98401_INT_IND));
1216         zout(uPD98401_GMR_ONE /*uPD98401_BURST4*/,GMR);
1217         last = MAX_CRAM_SIZE;
1218         for (i = last-RAM_INCREMENT; i >= 0; i -= RAM_INCREMENT) {
1219                 zpokel(zatm_dev,0x55555555,i);
1220                 if (zpeekl(zatm_dev,i) != 0x55555555) last = i;
1221                 else {
1222                         zpokel(zatm_dev,0xAAAAAAAA,i);
1223                         if (zpeekl(zatm_dev,i) != 0xAAAAAAAA) last = i;
1224                         else zpokel(zatm_dev,i,i);
1225                 }
1226         }
1227         for (i = 0; i < last; i += RAM_INCREMENT)
1228                 if (zpeekl(zatm_dev,i) != i) break;
1229         zatm_dev->mem = i << 2;
1230         while (i) zpokel(zatm_dev,0,--i);
1231         /* reset again to rebuild memory pointers */
1232         zout(0,SWR);
1233         while (!(zin(GSR) & uPD98401_INT_IND));
1234         zout(uPD98401_GMR_ONE | uPD98401_BURST8 | uPD98401_BURST4 |
1235             uPD98401_BURST2 | uPD98401_GMR_PM | uPD98401_GMR_DR,GMR);
1236         /* TODO: should shrink allocation now */
1237         printk("mem=%dkB,%s (",zatm_dev->mem >> 10,zatm_dev->copper ? "UTP" :
1238             "MMF");
1239         for (i = 0; i < ESI_LEN; i++)
1240                 printk("%02X%s",dev->esi[i],i == ESI_LEN-1 ? ")\n" : "-");
1241         do {
1242                 unsigned long flags;
1243
1244                 spin_lock_irqsave(&zatm_dev->lock, flags);
1245                 t0 = zpeekl(zatm_dev,uPD98401_TSR);
1246                 udelay(10);
1247                 t1 = zpeekl(zatm_dev,uPD98401_TSR);
1248                 udelay(1010);
1249                 t2 = zpeekl(zatm_dev,uPD98401_TSR);
1250                 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1251         }
1252         while (t0 > t1 || t1 > t2); /* loop if wrapping ... */
1253         zatm_dev->khz = t2-2*t1+t0;
1254         printk(KERN_NOTICE DEV_LABEL "(itf %d): uPD98401 %d.%d at %d.%03d "
1255             "MHz\n",dev->number,
1256             (zin(VER) & uPD98401_MAJOR) >> uPD98401_MAJOR_SHIFT,
1257             zin(VER) & uPD98401_MINOR,zatm_dev->khz/1000,zatm_dev->khz % 1000);
1258         return uPD98402_init(dev);
1259 }
1260
1261
1262 static int __init zatm_start(struct atm_dev *dev)
1263 {
1264         struct zatm_dev *zatm_dev = ZATM_DEV(dev);
1265         struct pci_dev *pdev = zatm_dev->pci_dev;
1266         unsigned long curr;
1267         int pools,vccs,rx;
1268         int error, i, ld;
1269
1270         DPRINTK("zatm_start\n");
1271         zatm_dev->rx_map = zatm_dev->tx_map = NULL;
1272         for (i = 0; i < NR_MBX; i++)
1273                 zatm_dev->mbx_start[i] = 0;
1274         error = request_irq(zatm_dev->irq, zatm_int, SA_SHIRQ, DEV_LABEL, dev);
1275         if (error < 0) {
1276                 printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
1277                     dev->number,zatm_dev->irq);
1278                 goto done;
1279         }
1280         /* define memory regions */
1281         pools = NR_POOLS;
1282         if (NR_SHAPERS*SHAPER_SIZE > pools*POOL_SIZE)
1283                 pools = NR_SHAPERS*SHAPER_SIZE/POOL_SIZE;
1284         vccs = (zatm_dev->mem-NR_SHAPERS*SHAPER_SIZE-pools*POOL_SIZE)/
1285             (2*VC_SIZE+RX_SIZE);
1286         ld = -1;
1287         for (rx = 1; rx < vccs; rx <<= 1) ld++;
1288         dev->ci_range.vpi_bits = 0; /* @@@ no VPI for now */
1289         dev->ci_range.vci_bits = ld;
1290         dev->link_rate = ATM_OC3_PCR;
1291         zatm_dev->chans = vccs; /* ??? */
1292         curr = rx*RX_SIZE/4;
1293         DPRINTK("RX pool 0x%08lx\n",curr);
1294         zpokel(zatm_dev,curr,uPD98401_PMA); /* receive pool */
1295         zatm_dev->pool_base = curr;
1296         curr += pools*POOL_SIZE/4;
1297         DPRINTK("Shapers 0x%08lx\n",curr);
1298         zpokel(zatm_dev,curr,uPD98401_SMA); /* shapers */
1299         curr += NR_SHAPERS*SHAPER_SIZE/4;
1300         DPRINTK("Free    0x%08lx\n",curr);
1301         zpokel(zatm_dev,curr,uPD98401_TOS); /* free pool */
1302         printk(KERN_INFO DEV_LABEL "(itf %d): %d shapers, %d pools, %d RX, "
1303             "%ld VCs\n",dev->number,NR_SHAPERS,pools,rx,
1304             (zatm_dev->mem-curr*4)/VC_SIZE);
1305         /* create mailboxes */
1306         for (i = 0; i < NR_MBX; i++) {
1307                 void *mbx;
1308                 dma_addr_t mbx_dma;
1309
1310                 if (!mbx_entries[i])
1311                         continue;
1312                 mbx = pci_alloc_consistent(pdev, 2*MBX_SIZE(i), &mbx_dma);
1313                 if (!mbx) {
1314                         error = -ENOMEM;
1315                         goto out;
1316                 }
1317                 /*
1318                  * Alignment provided by pci_alloc_consistent() isn't enough
1319                  * for this device.
1320                  */
1321                 if (((unsigned long)mbx ^ mbx_dma) & 0xffff) {
1322                         printk(KERN_ERR DEV_LABEL "(itf %d): system "
1323                                "bus incompatible with driver\n", dev->number);
1324                         pci_free_consistent(pdev, 2*MBX_SIZE(i), mbx, mbx_dma);
1325                         error = -ENODEV;
1326                         goto out;
1327                 }
1328                 DPRINTK("mbx@0x%08lx-0x%08lx\n", mbx, mbx + MBX_SIZE(i));
1329                 zatm_dev->mbx_start[i] = (unsigned long)mbx;
1330                 zatm_dev->mbx_dma[i] = mbx_dma;
1331                 zatm_dev->mbx_end[i] = (zatm_dev->mbx_start[i] + MBX_SIZE(i)) &
1332                                         0xffff;
1333                 zout(mbx_dma >> 16, MSH(i));
1334                 zout(mbx_dma, MSL(i));
1335                 zout(zatm_dev->mbx_end[i], MBA(i));
1336                 zout((unsigned long)mbx & 0xffff, MTA(i));
1337                 zout((unsigned long)mbx & 0xffff, MWA(i));
1338         }
1339         error = start_tx(dev);
1340         if (error)
1341                 goto out;
1342         error = start_rx(dev);
1343         if (error)
1344                 goto out_tx;
1345         error = dev->phy->start(dev);
1346         if (error)
1347                 goto out_rx;
1348         zout(0xffffffff,IMR); /* enable interrupts */
1349         /* enable TX & RX */
1350         zout(zin(GMR) | uPD98401_GMR_SE | uPD98401_GMR_RE,GMR);
1351 done:
1352         return error;
1353
1354 out_rx:
1355         kfree(zatm_dev->rx_map);
1356 out_tx:
1357         kfree(zatm_dev->tx_map);
1358 out:
1359         while (i-- > 0) {
1360                 pci_free_consistent(pdev, 2*MBX_SIZE(i),
1361                                     (void *)zatm_dev->mbx_start[i],
1362                                     zatm_dev->mbx_dma[i]);
1363         }
1364         free_irq(zatm_dev->irq, dev);
1365         goto done;
1366 }
1367
1368
1369 static void zatm_close(struct atm_vcc *vcc)
1370 {
1371         DPRINTK(">zatm_close\n");
1372         if (!ZATM_VCC(vcc)) return;
1373         clear_bit(ATM_VF_READY,&vcc->flags);
1374         close_rx(vcc);
1375         EVENT("close_tx\n",0,0);
1376         close_tx(vcc);
1377         DPRINTK("zatm_close: done waiting\n");
1378         /* deallocate memory */
1379         kfree(ZATM_VCC(vcc));
1380         vcc->dev_data = NULL;
1381         clear_bit(ATM_VF_ADDR,&vcc->flags);
1382 }
1383
1384
1385 static int zatm_open(struct atm_vcc *vcc)
1386 {
1387         struct zatm_dev *zatm_dev;
1388         struct zatm_vcc *zatm_vcc;
1389         short vpi = vcc->vpi;
1390         int vci = vcc->vci;
1391         int error;
1392
1393         DPRINTK(">zatm_open\n");
1394         zatm_dev = ZATM_DEV(vcc->dev);
1395         if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
1396                 vcc->dev_data = NULL;
1397         if (vci != ATM_VPI_UNSPEC && vpi != ATM_VCI_UNSPEC)
1398                 set_bit(ATM_VF_ADDR,&vcc->flags);
1399         if (vcc->qos.aal != ATM_AAL5) return -EINVAL; /* @@@ AAL0 */
1400         DPRINTK(DEV_LABEL "(itf %d): open %d.%d\n",vcc->dev->number,vcc->vpi,
1401             vcc->vci);
1402         if (!test_bit(ATM_VF_PARTIAL,&vcc->flags)) {
1403                 zatm_vcc = kmalloc(sizeof(struct zatm_vcc),GFP_KERNEL);
1404                 if (!zatm_vcc) {
1405                         clear_bit(ATM_VF_ADDR,&vcc->flags);
1406                         return -ENOMEM;
1407                 }
1408                 vcc->dev_data = zatm_vcc;
1409                 ZATM_VCC(vcc)->tx_chan = 0; /* for zatm_close after open_rx */
1410                 if ((error = open_rx_first(vcc))) {
1411                         zatm_close(vcc);
1412                         return error;
1413                 }
1414                 if ((error = open_tx_first(vcc))) {
1415                         zatm_close(vcc);
1416                         return error;
1417                 }
1418         }
1419         if (vci == ATM_VPI_UNSPEC || vpi == ATM_VCI_UNSPEC) return 0;
1420         if ((error = open_rx_second(vcc))) {
1421                 zatm_close(vcc);
1422                 return error;
1423         }
1424         if ((error = open_tx_second(vcc))) {
1425                 zatm_close(vcc);
1426                 return error;
1427         }
1428         set_bit(ATM_VF_READY,&vcc->flags);
1429         return 0;
1430 }
1431
1432
1433 static int zatm_change_qos(struct atm_vcc *vcc,struct atm_qos *qos,int flags)
1434 {
1435         printk("Not yet implemented\n");
1436         return -ENOSYS;
1437         /* @@@ */
1438 }
1439
1440
1441 static int zatm_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
1442 {
1443         struct zatm_dev *zatm_dev;
1444         unsigned long flags;
1445
1446         zatm_dev = ZATM_DEV(dev);
1447         switch (cmd) {
1448                 case ZATM_GETPOOLZ:
1449                         if (!capable(CAP_NET_ADMIN)) return -EPERM;
1450                         /* fall through */
1451                 case ZATM_GETPOOL:
1452                         {
1453                                 struct zatm_pool_info info;
1454                                 int pool;
1455
1456                                 if (get_user(pool,
1457                                     &((struct zatm_pool_req __user *) arg)->pool_num))
1458                                         return -EFAULT;
1459                                 if (pool < 0 || pool > ZATM_LAST_POOL)
1460                                         return -EINVAL;
1461                                 spin_lock_irqsave(&zatm_dev->lock, flags);
1462                                 info = zatm_dev->pool_info[pool];
1463                                 if (cmd == ZATM_GETPOOLZ) {
1464                                         zatm_dev->pool_info[pool].rqa_count = 0;
1465                                         zatm_dev->pool_info[pool].rqu_count = 0;
1466                                 }
1467                                 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1468                                 return copy_to_user(
1469                                     &((struct zatm_pool_req __user *) arg)->info,
1470                                     &info,sizeof(info)) ? -EFAULT : 0;
1471                         }
1472                 case ZATM_SETPOOL:
1473                         {
1474                                 struct zatm_pool_info info;
1475                                 int pool;
1476
1477                                 if (!capable(CAP_NET_ADMIN)) return -EPERM;
1478                                 if (get_user(pool,
1479                                     &((struct zatm_pool_req __user *) arg)->pool_num))
1480                                         return -EFAULT;
1481                                 if (pool < 0 || pool > ZATM_LAST_POOL)
1482                                         return -EINVAL;
1483                                 if (copy_from_user(&info,
1484                                     &((struct zatm_pool_req __user *) arg)->info,
1485                                     sizeof(info))) return -EFAULT;
1486                                 if (!info.low_water)
1487                                         info.low_water = zatm_dev->
1488                                             pool_info[pool].low_water;
1489                                 if (!info.high_water)
1490                                         info.high_water = zatm_dev->
1491                                             pool_info[pool].high_water;
1492                                 if (!info.next_thres)
1493                                         info.next_thres = zatm_dev->
1494                                             pool_info[pool].next_thres;
1495                                 if (info.low_water >= info.high_water ||
1496                                     info.low_water < 0)
1497                                         return -EINVAL;
1498                                 spin_lock_irqsave(&zatm_dev->lock, flags);
1499                                 zatm_dev->pool_info[pool].low_water =
1500                                     info.low_water;
1501                                 zatm_dev->pool_info[pool].high_water =
1502                                     info.high_water;
1503                                 zatm_dev->pool_info[pool].next_thres =
1504                                     info.next_thres;
1505                                 spin_unlock_irqrestore(&zatm_dev->lock, flags);
1506                                 return 0;
1507                         }
1508                 default:
1509                         if (!dev->phy->ioctl) return -ENOIOCTLCMD;
1510                         return dev->phy->ioctl(dev,cmd,arg);
1511         }
1512 }
1513
1514
1515 static int zatm_getsockopt(struct atm_vcc *vcc,int level,int optname,
1516     void __user *optval,int optlen)
1517 {
1518         return -EINVAL;
1519 }
1520
1521
1522 static int zatm_setsockopt(struct atm_vcc *vcc,int level,int optname,
1523     void __user *optval,int optlen)
1524 {
1525         return -EINVAL;
1526 }
1527
1528 static int zatm_send(struct atm_vcc *vcc,struct sk_buff *skb)
1529 {
1530         int error;
1531
1532         EVENT(">zatm_send 0x%lx\n",(unsigned long) skb,0);
1533         if (!ZATM_VCC(vcc)->tx_chan || !test_bit(ATM_VF_READY,&vcc->flags)) {
1534                 if (vcc->pop) vcc->pop(vcc,skb);
1535                 else dev_kfree_skb(skb);
1536                 return -EINVAL;
1537         }
1538         if (!skb) {
1539                 printk(KERN_CRIT "!skb in zatm_send ?\n");
1540                 if (vcc->pop) vcc->pop(vcc,skb);
1541                 return -EINVAL;
1542         }
1543         ATM_SKB(skb)->vcc = vcc;
1544         error = do_tx(skb);
1545         if (error != RING_BUSY) return error;
1546         skb_queue_tail(&ZATM_VCC(vcc)->backlog,skb);
1547         return 0;
1548 }
1549
1550
1551 static void zatm_phy_put(struct atm_dev *dev,unsigned char value,
1552     unsigned long addr)
1553 {
1554         struct zatm_dev *zatm_dev;
1555
1556         zatm_dev = ZATM_DEV(dev);
1557         zwait;
1558         zout(value,CER);
1559         zout(uPD98401_IND_ACC | uPD98401_IA_B0 |
1560             (uPD98401_IA_TGT_PHY << uPD98401_IA_TGT_SHIFT) | addr,CMR);
1561 }
1562
1563
1564 static unsigned char zatm_phy_get(struct atm_dev *dev,unsigned long addr)
1565 {
1566         struct zatm_dev *zatm_dev;
1567
1568         zatm_dev = ZATM_DEV(dev);
1569         zwait;
1570         zout(uPD98401_IND_ACC | uPD98401_IA_B0 | uPD98401_IA_RW |
1571           (uPD98401_IA_TGT_PHY << uPD98401_IA_TGT_SHIFT) | addr,CMR);
1572         zwait;
1573         return zin(CER) & 0xff;
1574 }
1575
1576
1577 static const struct atmdev_ops ops = {
1578         .open           = zatm_open,
1579         .close          = zatm_close,
1580         .ioctl          = zatm_ioctl,
1581         .getsockopt     = zatm_getsockopt,
1582         .setsockopt     = zatm_setsockopt,
1583         .send           = zatm_send,
1584         .phy_put        = zatm_phy_put,
1585         .phy_get        = zatm_phy_get,
1586         .change_qos     = zatm_change_qos,
1587 };
1588
1589 static int __devinit zatm_init_one(struct pci_dev *pci_dev,
1590                                    const struct pci_device_id *ent)
1591 {
1592         struct atm_dev *dev;
1593         struct zatm_dev *zatm_dev;
1594         int ret = -ENOMEM;
1595
1596         zatm_dev = (struct zatm_dev *) kmalloc(sizeof(*zatm_dev), GFP_KERNEL);
1597         if (!zatm_dev) {
1598                 printk(KERN_EMERG "%s: memory shortage\n", DEV_LABEL);
1599                 goto out;
1600         }
1601
1602         dev = atm_dev_register(DEV_LABEL, &ops, -1, NULL);
1603         if (!dev)
1604                 goto out_free;
1605
1606         ret = pci_enable_device(pci_dev);
1607         if (ret < 0)
1608                 goto out_deregister;
1609
1610         ret = pci_request_regions(pci_dev, DEV_LABEL);
1611         if (ret < 0)
1612                 goto out_disable;
1613
1614         zatm_dev->pci_dev = pci_dev;
1615         dev->dev_data = zatm_dev;
1616         zatm_dev->copper = (int)ent->driver_data;
1617         if ((ret = zatm_init(dev)) || (ret = zatm_start(dev)))
1618                 goto out_release;
1619
1620         pci_set_drvdata(pci_dev, dev);
1621         zatm_dev->more = zatm_boards;
1622         zatm_boards = dev;
1623         ret = 0;
1624 out:
1625         return ret;
1626
1627 out_release:
1628         pci_release_regions(pci_dev);
1629 out_disable:
1630         pci_disable_device(pci_dev);
1631 out_deregister:
1632         atm_dev_deregister(dev);
1633 out_free:
1634         kfree(zatm_dev);
1635         goto out;
1636 }
1637
1638
1639 MODULE_LICENSE("GPL");
1640
1641 static struct pci_device_id zatm_pci_tbl[] __devinitdata = {
1642         { PCI_VENDOR_ID_ZEITNET, PCI_DEVICE_ID_ZEITNET_1221,
1643                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, ZATM_COPPER },
1644         { PCI_VENDOR_ID_ZEITNET, PCI_DEVICE_ID_ZEITNET_1225,
1645                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1646         { 0, }
1647 };
1648 MODULE_DEVICE_TABLE(pci, zatm_pci_tbl);
1649
1650 static struct pci_driver zatm_driver = {
1651         .name =         DEV_LABEL,
1652         .id_table =     zatm_pci_tbl,
1653         .probe =        zatm_init_one,
1654 };
1655
1656 static int __init zatm_init_module(void)
1657 {
1658         return pci_register_driver(&zatm_driver);
1659 }
1660
1661 module_init(zatm_init_module);
1662 /* module_exit not defined so not unloadable */