drivers/ieee1394/ieee1394_core.c

   1 /*
   2  * IEEE 1394 for Linux
   3  *
   4  * Core support: hpsb_packet management, packet handling and forwarding to
   5  *               highlevel or lowlevel code
   6  *
   7  * Copyright (C) 1999, 2000 Andreas E. Bombe
   8  *                     2002 Manfred Weihs <weihs@ict.tuwien.ac.at>
   9  *
  10  * This code is licensed under the GPL.  See the file COPYING in the root
  11  * directory of the kernel sources for details.
  12  *
  13  *
  14  * Contributions:
  15  *
  16  * Manfred Weihs <weihs@ict.tuwien.ac.at>
  17  *        loopback functionality in hpsb_send_packet
  18  *        allow highlevel drivers to disable automatic response generation
  19  *              and to generate responses themselves (deferred)
  20  *
  21  */
  22
  23 #include <linux/config.h>
  24 #include <linux/kernel.h>
  25 #include <linux/list.h>
  26 #include <linux/string.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/module.h>
  31 #include <linux/moduleparam.h>
  32 #include <linux/bitops.h>
  33 #include <linux/kdev_t.h>
  34 #include <linux/skbuff.h>
  35 #include <linux/suspend.h>
  36
  37 #include <asm/byteorder.h>
  38 #include <asm/semaphore.h>
  39
  40 #include "ieee1394_types.h"
  41 #include "ieee1394.h"
  42 #include "hosts.h"
  43 #include "ieee1394_core.h"
  44 #include "highlevel.h"
  45 #include "ieee1394_transactions.h"
  46 #include "csr.h"
  47 #include "nodemgr.h"
  48 #include "dma.h"
  49 #include "iso.h"
  50 #include "config_roms.h"
  51
  52 /*
  53  * Disable the nodemgr detection and config rom reading functionality.
  54  */
  55 static int disable_nodemgr = 0;
  56 module_param(disable_nodemgr, int, 0444);
  57 MODULE_PARM_DESC(disable_nodemgr, "Disable nodemgr functionality.");
  58
  59 /* We are GPL, so treat us special */
  60 MODULE_LICENSE("GPL");
  61
  62 /* Some globals used */
  63 const char *hpsb_speedto_str[] = { "S100", "S200", "S400", "S800", "S1600", "S3200" };
  64
  65 #ifdef CONFIG_IEEE1394_VERBOSEDEBUG
  66 static void dump_packet(const char *text, quadlet_t *data, int size)
  67 {
  68         int i;
  69
  70         size /= 4;
  71         size = (size > 4 ? 4 : size);
  72
  73         printk(KERN_DEBUG "ieee1394: %s", text);
  74         for (i = 0; i < size; i++)
  75                 printk(" %08x", data[i]);
  76         printk("\n");
  77 }
  78 #else
  79 #define dump_packet(x,y,z)
  80 #endif
  81
  82 static void queue_packet_complete(struct hpsb_packet *packet);
  83
  84
  85 /**
  86  * hpsb_set_packet_complete_task - set the task that runs when a packet
  87  * completes. You cannot call this more than once on a single packet
  88  * before it is sent.
  89  *
  90  * @packet: the packet whose completion we want the task added to
  91  * @routine: function to call
  92  * @data: data (if any) to pass to the above function
  93  */
  94 void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
  95                                    void (*routine)(void *), void *data)
  96 {
  97         WARN_ON(packet->complete_routine != NULL);
  98         packet->complete_routine = routine;
  99         packet->complete_data = data;
 100         return;
 101 }
 102
 103 /**
 104  * hpsb_alloc_packet - allocate new packet structure
 105  * @data_size: size of the data block to be allocated
 106  *
 107  * This function allocates, initializes and returns a new &struct hpsb_packet.
 108  * It can be used in interrupt context.  A header block is always included, its
 109  * size is big enough to contain all possible 1394 headers.  The data block is
 110  * only allocated when @data_size is not zero.
 111  *
 112  * For packets for which responses will be received the @data_size has to be big
 113  * enough to contain the response's data block since no further allocation
 114  * occurs at response matching time.
 115  *
 116  * The packet's generation value will be set to the current generation number
 117  * for ease of use.  Remember to overwrite it with your own recorded generation
 118  * number if you can not be sure that your code will not race with a bus reset.
 119  *
 120  * Return value: A pointer to a &struct hpsb_packet or NULL on allocation
 121  * failure.
 122  */
 123 struct hpsb_packet *hpsb_alloc_packet(size_t data_size)
 124 {
 125         struct hpsb_packet *packet = NULL;
 126         struct sk_buff *skb;
 127
 128         data_size = ((data_size + 3) & ~3);
 129
 130         skb = alloc_skb(data_size + sizeof(*packet), GFP_ATOMIC);
 131         if (skb == NULL)
 132                 return NULL;
 133
 134         memset(skb->data, 0, data_size + sizeof(*packet));
 135
 136         packet = (struct hpsb_packet *)skb->data;
 137         packet->skb = skb;
 138
 139         packet->header = packet->embedded_header;
 140         packet->state = hpsb_unused;
 141         packet->generation = -1;
 142         INIT_LIST_HEAD(&packet->driver_list);
 143         atomic_set(&packet->refcnt, 1);
 144
 145         if (data_size) {
 146                 packet->data = (quadlet_t *)(skb->data + sizeof(*packet));
 147                 packet->data_size = data_size;
 148         }
 149
 150         return packet;
 151 }
 152
 153
 154 /**
 155  * hpsb_free_packet - free packet and data associated with it
 156  * @packet: packet to free (is NULL safe)
 157  *
 158  * This function will free packet->data and finally the packet itself.
 159  */
 160 void hpsb_free_packet(struct hpsb_packet *packet)
 161 {
 162         if (packet && atomic_dec_and_test(&packet->refcnt)) {
 163                 BUG_ON(!list_empty(&packet->driver_list));
 164                 kfree_skb(packet->skb);
 165         }
 166 }
 167
 168
 169 int hpsb_reset_bus(struct hpsb_host *host, int type)
 170 {
 171         if (!host->in_bus_reset) {
 172                 host->driver->devctl(host, RESET_BUS, type);
 173                 return 0;
 174         } else {
 175                 return 1;
 176         }
 177 }
 178
 179
 180 int hpsb_bus_reset(struct hpsb_host *host)
 181 {
 182         if (host->in_bus_reset) {
 183                 HPSB_NOTICE("%s called while bus reset already in progress",
 184                             __FUNCTION__);
 185                 return 1;
 186         }
 187
 188         abort_requests(host);
 189         host->in_bus_reset = 1;
 190         host->irm_id = -1;
 191         host->is_irm = 0;
 192         host->busmgr_id = -1;
 193         host->is_busmgr = 0;
 194         host->is_cycmst = 0;
 195         host->node_count = 0;
 196         host->selfid_count = 0;
 197
 198         return 0;
 199 }
 200
 201
 202 /*
 203  * Verify num_of_selfids SelfIDs and return number of nodes.  Return zero in
 204  * case verification failed.
 205  */
 206 static int check_selfids(struct hpsb_host *host)
 207 {
 208         int nodeid = -1;
 209         int rest_of_selfids = host->selfid_count;
 210         struct selfid *sid = (struct selfid *)host->topology_map;
 211         struct ext_selfid *esid;
 212         int esid_seq = 23;
 213
 214         host->nodes_active = 0;
 215
 216         while (rest_of_selfids--) {
 217                 if (!sid->extended) {
 218                         nodeid++;
 219                         esid_seq = 0;
 220
 221                         if (sid->phy_id != nodeid) {
 222                                 HPSB_INFO("SelfIDs failed monotony check with "
 223                                           "%d", sid->phy_id);
 224                                 return 0;
 225                         }
 226
 227                         if (sid->link_active) {
 228                                 host->nodes_active++;
 229                                 if (sid->contender)
 230                                         host->irm_id = LOCAL_BUS | sid->phy_id;
 231                         }
 232                 } else {
 233                         esid = (struct ext_selfid *)sid;
 234
 235                         if ((esid->phy_id != nodeid)
 236                             || (esid->seq_nr != esid_seq)) {
 237                                 HPSB_INFO("SelfIDs failed monotony check with "
 238                                           "%d/%d", esid->phy_id, esid->seq_nr);
 239                                 return 0;
 240                         }
 241                         esid_seq++;
 242                 }
 243                 sid++;
 244         }
 245
 246         esid = (struct ext_selfid *)(sid - 1);
 247         while (esid->extended) {
 248                 if ((esid->porta == 0x2) || (esid->portb == 0x2)
 249                     || (esid->portc == 0x2) || (esid->portd == 0x2)
 250                     || (esid->porte == 0x2) || (esid->portf == 0x2)
 251                     || (esid->portg == 0x2) || (esid->porth == 0x2)) {
 252                         HPSB_INFO("SelfIDs failed root check on "
 253                                   "extended SelfID");
 254                         return 0;
 255                 }
 256                 esid--;
 257         }
 258
 259         sid = (struct selfid *)esid;
 260         if ((sid->port0 == 0x2) || (sid->port1 == 0x2) || (sid->port2 == 0x2)) {
 261                 HPSB_INFO("SelfIDs failed root check");
 262                 return 0;
 263         }
 264
 265         host->node_count = nodeid + 1;
 266         return 1;
 267 }
 268
 269 static void build_speed_map(struct hpsb_host *host, int nodecount)
 270 {
 271         u8 speedcap[nodecount];
 272         u8 cldcnt[nodecount];
 273         u8 *map = host->speed_map;
 274         struct selfid *sid;
 275         struct ext_selfid *esid;
 276         int i, j, n;
 277
 278         for (i = 0; i < (nodecount * 64); i += 64) {
 279                 for (j = 0; j < nodecount; j++) {
 280                         map[i+j] = IEEE1394_SPEED_MAX;
 281                 }
 282         }
 283
 284         for (i = 0; i < nodecount; i++) {
 285                 cldcnt[i] = 0;
 286         }
 287
 288         /* find direct children count and speed */
 289         for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
 290                      n = nodecount - 1;
 291              (void *)sid >= (void *)host->topology_map; sid--) {
 292                 if (sid->extended) {
 293                         esid = (struct ext_selfid *)sid;
 294
 295                         if (esid->porta == 0x3) cldcnt[n]++;
 296                         if (esid->portb == 0x3) cldcnt[n]++;
 297                         if (esid->portc == 0x3) cldcnt[n]++;
 298                         if (esid->portd == 0x3) cldcnt[n]++;
 299                         if (esid->porte == 0x3) cldcnt[n]++;
 300                         if (esid->portf == 0x3) cldcnt[n]++;
 301                         if (esid->portg == 0x3) cldcnt[n]++;
 302                         if (esid->porth == 0x3) cldcnt[n]++;
 303                 } else {
 304                         if (sid->port0 == 0x3) cldcnt[n]++;
 305                         if (sid->port1 == 0x3) cldcnt[n]++;
 306                         if (sid->port2 == 0x3) cldcnt[n]++;
 307
 308                         speedcap[n] = sid->speed;
 309                         n--;
 310                 }
 311         }
 312
 313         /* set self mapping */
 314         for (i = 0; i < nodecount; i++) {
 315                 map[64*i + i] = speedcap[i];
 316         }
 317
 318         /* fix up direct children count to total children count;
 319          * also fix up speedcaps for sibling and parent communication */
 320         for (i = 1; i < nodecount; i++) {
 321                 for (j = cldcnt[i], n = i - 1; j > 0; j--) {
 322                         cldcnt[i] += cldcnt[n];
 323                         speedcap[n] = min(speedcap[n], speedcap[i]);
 324                         n -= cldcnt[n] + 1;
 325                 }
 326         }
 327
 328         for (n = 0; n < nodecount; n++) {
 329                 for (i = n - cldcnt[n]; i <= n; i++) {
 330                         for (j = 0; j < (n - cldcnt[n]); j++) {
 331                                 map[j*64 + i] = map[i*64 + j] =
 332                                         min(map[i*64 + j], speedcap[n]);
 333                         }
 334                         for (j = n + 1; j < nodecount; j++) {
 335                                 map[j*64 + i] = map[i*64 + j] =
 336                                         min(map[i*64 + j], speedcap[n]);
 337                         }
 338                 }
 339         }
 340 }
 341
 342
 343 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 344 {
 345         if (host->in_bus_reset) {
 346                 HPSB_VERBOSE("Including SelfID 0x%x", sid);
 347                 host->topology_map[host->selfid_count++] = sid;
 348         } else {
 349                 HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
 350                             sid, NODEID_TO_BUS(host->node_id));
 351         }
 352 }
 353
 354 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 355 {
 356         if (!host->in_bus_reset)
 357                 HPSB_NOTICE("SelfID completion called outside of bus reset!");
 358
 359         host->node_id = LOCAL_BUS | phyid;
 360         host->is_root = isroot;
 361
 362         if (!check_selfids(host)) {
 363                 if (host->reset_retries++ < 20) {
 364                         /* selfid stage did not complete without error */
 365                         HPSB_NOTICE("Error in SelfID stage, resetting");
 366                         host->in_bus_reset = 0;
 367                         /* this should work from ohci1394 now... */
 368                         hpsb_reset_bus(host, LONG_RESET);
 369                         return;
 370                 } else {
 371                         HPSB_NOTICE("Stopping out-of-control reset loop");
 372                         HPSB_NOTICE("Warning - topology map and speed map will not be valid");
 373                         host->reset_retries = 0;
 374                 }
 375         } else {
 376                 host->reset_retries = 0;
 377                 build_speed_map(host, host->node_count);
 378         }
 379
 380         HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
 381                      "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
 382
 383         /* irm_id is kept up to date by check_selfids() */
 384         if (host->irm_id == host->node_id) {
 385                 host->is_irm = 1;
 386         } else {
 387                 host->is_busmgr = 0;
 388                 host->is_irm = 0;
 389         }
 390
 391         if (isroot) {
 392                 host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
 393                 host->is_cycmst = 1;
 394         }
 395         atomic_inc(&host->generation);
 396         host->in_bus_reset = 0;
 397         highlevel_host_reset(host);
 398 }
 399
 400
 401 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 402                       int ackcode)
 403 {
 404         unsigned long flags;
 405
 406         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 407
 408         packet->ack_code = ackcode;
 409
 410         if (packet->no_waiter || packet->state == hpsb_complete) {
 411                 /* if packet->no_waiter, must not have a tlabel allocated */
 412                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 413                 hpsb_free_packet(packet);
 414                 return;
 415         }
 416
 417         atomic_dec(&packet->refcnt);    /* drop HC's reference */
 418         /* here the packet must be on the host->pending_packet_queue */
 419
 420         if (ackcode != ACK_PENDING || !packet->expect_response) {
 421                 packet->state = hpsb_complete;
 422                 __skb_unlink(packet->skb, &host->pending_packet_queue);
 423                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 424                 queue_packet_complete(packet);
 425                 return;
 426         }
 427
 428         packet->state = hpsb_pending;
 429         packet->sendtime = jiffies;
 430
 431         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 432
 433         mod_timer(&host->timeout, jiffies + host->timeout_interval);
 434 }
 435
 436 /**
 437  * hpsb_send_phy_config - transmit a PHY configuration packet on the bus
 438  * @host: host that PHY config packet gets sent through
 439  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
 440  * @gapcnt: gap count value to set (-1 = don't set gap count)
 441  *
 442  * This function sends a PHY config packet on the bus through the specified host.
 443  *
 444  * Return value: 0 for success or error number otherwise.
 445  */
 446 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 447 {
 448         struct hpsb_packet *packet;
 449         int retval = 0;
 450
 451         if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
 452            (rootid == -1 && gapcnt == -1)) {
 453                 HPSB_DEBUG("Invalid Parameter: rootid = %d   gapcnt = %d",
 454                            rootid, gapcnt);
 455                 return -EINVAL;
 456         }
 457
 458         packet = hpsb_alloc_packet(0);
 459         if (!packet)
 460                 return -ENOMEM;
 461
 462         packet->host = host;
 463         packet->header_size = 8;
 464         packet->data_size = 0;
 465         packet->expect_response = 0;
 466         packet->no_waiter = 0;
 467         packet->type = hpsb_raw;
 468         packet->header[0] = 0;
 469         if (rootid != -1)
 470                 packet->header[0] |= rootid << 24 | 1 << 23;
 471         if (gapcnt != -1)
 472                 packet->header[0] |= gapcnt << 16 | 1 << 22;
 473
 474         packet->header[1] = ~packet->header[0];
 475
 476         packet->generation = get_hpsb_generation(host);
 477
 478         retval = hpsb_send_packet_and_wait(packet);
 479         hpsb_free_packet(packet);
 480
 481         return retval;
 482 }
 483
 484 /**
 485  * hpsb_send_packet - transmit a packet on the bus
 486  * @packet: packet to send
 487  *
 488  * The packet is sent through the host specified in the packet->host field.
 489  * Before sending, the packet's transmit speed is automatically determined
 490  * using the local speed map when it is an async, non-broadcast packet.
 491  *
 492  * Possibilities for failure are that host is either not initialized, in bus
 493  * reset, the packet's generation number doesn't match the current generation
 494  * number or the host reports a transmit error.
 495  *
 496  * Return value: 0 on success, negative errno on failure.
 497  */
 498 int hpsb_send_packet(struct hpsb_packet *packet)
 499 {
 500         struct hpsb_host *host = packet->host;
 501
 502         if (host->is_shutdown)
 503                 return -EINVAL;
 504         if (host->in_bus_reset ||
 505             (packet->generation != get_hpsb_generation(host)))
 506                 return -EAGAIN;
 507
 508         packet->state = hpsb_queued;
 509
 510         /* This just seems silly to me */
 511         WARN_ON(packet->no_waiter && packet->expect_response);
 512
 513         if (!packet->no_waiter || packet->expect_response) {
 514                 atomic_inc(&packet->refcnt);
 515                 skb_queue_tail(&host->pending_packet_queue, packet->skb);
 516         }
 517
 518         if (packet->node_id == host->node_id) {
 519                 /* it is a local request, so handle it locally */
 520
 521                 quadlet_t *data;
 522                 size_t size = packet->data_size + packet->header_size;
 523
 524                 data = kmalloc(size, GFP_ATOMIC);
 525                 if (!data) {
 526                         HPSB_ERR("unable to allocate memory for concatenating header and data");
 527                         return -ENOMEM;
 528                 }
 529
 530                 memcpy(data, packet->header, packet->header_size);
 531
 532                 if (packet->data_size)
 533                         memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size);
 534
 535                 dump_packet("send packet local:", packet->header,
 536                             packet->header_size);
 537
 538                 hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
 539                 hpsb_packet_received(host, data, size, 0);
 540
 541                 kfree(data);
 542
 543                 return 0;
 544         }
 545
 546         if (packet->type == hpsb_async && packet->node_id != ALL_NODES) {
 547                 packet->speed_code =
 548                         host->speed_map[NODEID_TO_NODE(host->node_id) * 64
 549                                        + NODEID_TO_NODE(packet->node_id)];
 550         }
 551
 552 #ifdef CONFIG_IEEE1394_VERBOSEDEBUG
 553         switch (packet->speed_code) {
 554         case 2:
 555                 dump_packet("send packet 400:", packet->header,
 556                             packet->header_size);
 557                 break;
 558         case 1:
 559                 dump_packet("send packet 200:", packet->header,
 560                             packet->header_size);
 561                 break;
 562         default:
 563                 dump_packet("send packet 100:", packet->header,
 564                             packet->header_size);
 565         }
 566 #endif
 567
 568         return host->driver->transmit_packet(host, packet);
 569 }
 570
 571 /* We could just use complete() directly as the packet complete
 572  * callback, but this is more typesafe, in the sense that we get a
 573  * compiler error if the prototype for complete() changes. */
 574
 575 static void complete_packet(void *data)
 576 {
 577         complete((struct completion *) data);
 578 }
 579
 580 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 581 {
 582         struct completion done;
 583         int retval;
 584
 585         init_completion(&done);
 586         hpsb_set_packet_complete_task(packet, complete_packet, &done);
 587         retval = hpsb_send_packet(packet);
 588         if (retval == 0)
 589                 wait_for_completion(&done);
 590
 591         return retval;
 592 }
 593
 594 static void send_packet_nocare(struct hpsb_packet *packet)
 595 {
 596         if (hpsb_send_packet(packet) < 0) {
 597                 hpsb_free_packet(packet);
 598         }
 599 }
 600
 601
 602 static void handle_packet_response(struct hpsb_host *host, int tcode,
 603                                    quadlet_t *data, size_t size)
 604 {
 605         struct hpsb_packet *packet = NULL;
 606         struct sk_buff *skb;
 607         int tcode_match = 0;
 608         int tlabel;
 609         unsigned long flags;
 610
 611         tlabel = (data[0] >> 10) & 0x3f;
 612
 613         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 614
 615         skb_queue_walk(&host->pending_packet_queue, skb) {
 616                 packet = (struct hpsb_packet *)skb->data;
 617                 if ((packet->tlabel == tlabel)
 618                     && (packet->node_id == (data[1] >> 16))){
 619                         break;
 620                 }
 621
 622                 packet = NULL;
 623         }
 624
 625         if (packet == NULL) {
 626                 HPSB_DEBUG("unsolicited response packet received - no tlabel match");
 627                 dump_packet("contents:", data, 16);
 628                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 629                 return;
 630         }
 631
 632         switch (packet->tcode) {
 633         case TCODE_WRITEQ:
 634         case TCODE_WRITEB:
 635                 if (tcode != TCODE_WRITE_RESPONSE)
 636                         break;
 637                 tcode_match = 1;
 638                 memcpy(packet->header, data, 12);
 639                 break;
 640         case TCODE_READQ:
 641                 if (tcode != TCODE_READQ_RESPONSE)
 642                         break;
 643                 tcode_match = 1;
 644                 memcpy(packet->header, data, 16);
 645                 break;
 646         case TCODE_READB:
 647                 if (tcode != TCODE_READB_RESPONSE)
 648                         break;
 649                 tcode_match = 1;
 650                 BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
 651                 memcpy(packet->header, data, 16);
 652                 memcpy(packet->data, data + 4, size - 16);
 653                 break;
 654         case TCODE_LOCK_REQUEST:
 655                 if (tcode != TCODE_LOCK_RESPONSE)
 656                         break;
 657                 tcode_match = 1;
 658                 size = min((size - 16), (size_t)8);
 659                 BUG_ON(packet->skb->len - sizeof(*packet) < size);
 660                 memcpy(packet->header, data, 16);
 661                 memcpy(packet->data, data + 4, size);
 662                 break;
 663         }
 664
 665         if (!tcode_match) {
 666                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 667                 HPSB_INFO("unsolicited response packet received - tcode mismatch");
 668                 dump_packet("contents:", data, 16);
 669                 return;
 670         }
 671
 672         __skb_unlink(skb, skb->list);
 673
 674         if (packet->state == hpsb_queued) {
 675                 packet->sendtime = jiffies;
 676                 packet->ack_code = ACK_PENDING;
 677         }
 678
 679         packet->state = hpsb_complete;
 680         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 681
 682         queue_packet_complete(packet);
 683 }
 684
 685
 686 static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 687                                                quadlet_t *data, size_t dsize)
 688 {
 689         struct hpsb_packet *p;
 690
 691         p = hpsb_alloc_packet(dsize);
 692         if (unlikely(p == NULL)) {
 693                 /* FIXME - send data_error response */
 694                 return NULL;
 695         }
 696
 697         p->type = hpsb_async;
 698         p->state = hpsb_unused;
 699         p->host = host;
 700         p->node_id = data[1] >> 16;
 701         p->tlabel = (data[0] >> 10) & 0x3f;
 702         p->no_waiter = 1;
 703
 704         p->generation = get_hpsb_generation(host);
 705
 706         if (dsize % 4)
 707                 p->data[dsize / 4] = 0;
 708
 709         return p;
 710 }
 711
 712 #define PREP_ASYNC_HEAD_RCODE(tc) \
 713         packet->tcode = tc; \
 714         packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \
 715                 | (1 << 8) | (tc << 4); \
 716         packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \
 717         packet->header[2] = 0
 718
 719 static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
 720                               quadlet_t data)
 721 {
 722         PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
 723         packet->header[3] = data;
 724         packet->header_size = 16;
 725         packet->data_size = 0;
 726 }
 727
 728 static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 729                                int length)
 730 {
 731         if (rcode != RCODE_COMPLETE)
 732                 length = 0;
 733
 734         PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE);
 735         packet->header[3] = length << 16;
 736         packet->header_size = 16;
 737         packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0);
 738 }
 739
 740 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 741 {
 742         PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
 743         packet->header[2] = 0;
 744         packet->header_size = 12;
 745         packet->data_size = 0;
 746 }
 747
 748 static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
 749                           int length)
 750 {
 751         if (rcode != RCODE_COMPLETE)
 752                 length = 0;
 753
 754         PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE);
 755         packet->header[3] = (length << 16) | extcode;
 756         packet->header_size = 16;
 757         packet->data_size = length;
 758 }
 759
 760 #define PREP_REPLY_PACKET(length) \
 761                 packet = create_reply_packet(host, data, length); \
 762                 if (packet == NULL) break
 763
 764 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 765                                    quadlet_t *data, size_t size, int write_acked)
 766 {
 767         struct hpsb_packet *packet;
 768         int length, rcode, extcode;
 769         quadlet_t buffer;
 770         nodeid_t source = data[1] >> 16;
 771         nodeid_t dest = data[0] >> 16;
 772         u16 flags = (u16) data[0];
 773         u64 addr;
 774
 775         /* big FIXME - no error checking is done for an out of bounds length */
 776
 777         switch (tcode) {
 778         case TCODE_WRITEQ:
 779                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 780                 rcode = highlevel_write(host, source, dest, data+3,
 781                                         addr, 4, flags);
 782
 783                 if (!write_acked
 784                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 785                     && (rcode >= 0)) {
 786                         /* not a broadcast write, reply */
 787                         PREP_REPLY_PACKET(0);
 788                         fill_async_write_resp(packet, rcode);
 789                         send_packet_nocare(packet);
 790                 }
 791                 break;
 792
 793         case TCODE_WRITEB:
 794                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 795                 rcode = highlevel_write(host, source, dest, data+4,
 796                                         addr, data[3]>>16, flags);
 797
 798                 if (!write_acked
 799                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 800                     && (rcode >= 0)) {
 801                         /* not a broadcast write, reply */
 802                         PREP_REPLY_PACKET(0);
 803                         fill_async_write_resp(packet, rcode);
 804                         send_packet_nocare(packet);
 805                 }
 806                 break;
 807
 808         case TCODE_READQ:
 809                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 810                 rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
 811
 812                 if (rcode >= 0) {
 813                         PREP_REPLY_PACKET(0);
 814                         fill_async_readquad_resp(packet, rcode, buffer);
 815                         send_packet_nocare(packet);
 816                 }
 817                 break;
 818
 819         case TCODE_READB:
 820                 length = data[3] >> 16;
 821                 PREP_REPLY_PACKET(length);
 822
 823                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 824                 rcode = highlevel_read(host, source, packet->data, addr,
 825                                        length, flags);
 826
 827                 if (rcode >= 0) {
 828                         fill_async_readblock_resp(packet, rcode, length);
 829                         send_packet_nocare(packet);
 830                 } else {
 831                         hpsb_free_packet(packet);
 832                 }
 833                 break;
 834
 835         case TCODE_LOCK_REQUEST:
 836                 length = data[3] >> 16;
 837                 extcode = data[3] & 0xffff;
 838                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 839
 840                 PREP_REPLY_PACKET(8);
 841
 842                 if ((extcode == 0) || (extcode >= 7)) {
 843                         /* let switch default handle error */
 844                         length = 0;
 845                 }
 846
 847                 switch (length) {
 848                 case 4:
 849                         rcode = highlevel_lock(host, source, packet->data, addr,
 850                                                data[4], 0, extcode,flags);
 851                         fill_async_lock_resp(packet, rcode, extcode, 4);
 852                         break;
 853                 case 8:
 854                         if ((extcode != EXTCODE_FETCH_ADD)
 855                             && (extcode != EXTCODE_LITTLE_ADD)) {
 856                                 rcode = highlevel_lock(host, source,
 857                                                        packet->data, addr,
 858                                                        data[5], data[4],
 859                                                        extcode, flags);
 860                                 fill_async_lock_resp(packet, rcode, extcode, 4);
 861                         } else {
 862                                 rcode = highlevel_lock64(host, source,
 863                                              (octlet_t *)packet->data, addr,
 864                                              *(octlet_t *)(data + 4), 0ULL,
 865                                              extcode, flags);
 866                                 fill_async_lock_resp(packet, rcode, extcode, 8);
 867                         }
 868                         break;
 869                 case 16:
 870                         rcode = highlevel_lock64(host, source,
 871                                                  (octlet_t *)packet->data, addr,
 872                                                  *(octlet_t *)(data + 6),
 873                                                  *(octlet_t *)(data + 4),
 874                                                  extcode, flags);
 875                         fill_async_lock_resp(packet, rcode, extcode, 8);
 876                         break;
 877                 default:
 878                         rcode = RCODE_TYPE_ERROR;
 879                         fill_async_lock_resp(packet, rcode,
 880                                              extcode, 0);
 881                 }
 882
 883                 if (rcode >= 0) {
 884                         send_packet_nocare(packet);
 885                 } else {
 886                         hpsb_free_packet(packet);
 887                 }
 888                 break;
 889         }
 890
 891 }
 892 #undef PREP_REPLY_PACKET
 893
 894
 895 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 896                           int write_acked)
 897 {
 898         int tcode;
 899
 900         if (host->in_bus_reset) {
 901                 HPSB_INFO("received packet during reset; ignoring");
 902                 return;
 903         }
 904
 905         dump_packet("received packet:", data, size);
 906
 907         tcode = (data[0] >> 4) & 0xf;
 908
 909         switch (tcode) {
 910         case TCODE_WRITE_RESPONSE:
 911         case TCODE_READQ_RESPONSE:
 912         case TCODE_READB_RESPONSE:
 913         case TCODE_LOCK_RESPONSE:
 914                 handle_packet_response(host, tcode, data, size);
 915                 break;
 916
 917         case TCODE_WRITEQ:
 918         case TCODE_WRITEB:
 919         case TCODE_READQ:
 920         case TCODE_READB:
 921         case TCODE_LOCK_REQUEST:
 922                 handle_incoming_packet(host, tcode, data, size, write_acked);
 923                 break;
 924
 925
 926         case TCODE_ISO_DATA:
 927                 highlevel_iso_receive(host, data, size);
 928                 break;
 929
 930         case TCODE_CYCLE_START:
 931                 /* simply ignore this packet if it is passed on */
 932                 break;
 933
 934         default:
 935                 HPSB_NOTICE("received packet with bogus transaction code %d",
 936                             tcode);
 937                 break;
 938         }
 939 }
 940
 941
 942 void abort_requests(struct hpsb_host *host)
 943 {
 944         struct hpsb_packet *packet;
 945         struct sk_buff *skb;
 946
 947         host->driver->devctl(host, CANCEL_REQUESTS, 0);
 948
 949         while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) {
 950                 packet = (struct hpsb_packet *)skb->data;
 951
 952                 packet->state = hpsb_complete;
 953                 packet->ack_code = ACKX_ABORTED;
 954                 queue_packet_complete(packet);
 955         }
 956 }
 957
 958 void abort_timedouts(unsigned long __opaque)
 959 {
 960         struct hpsb_host *host = (struct hpsb_host *)__opaque;
 961         unsigned long flags;
 962         struct hpsb_packet *packet;
 963         struct sk_buff *skb;
 964         unsigned long expire;
 965
 966         spin_lock_irqsave(&host->csr.lock, flags);
 967         expire = host->csr.expire;
 968         spin_unlock_irqrestore(&host->csr.lock, flags);
 969
 970         /* Hold the lock around this, since we aren't dequeuing all
 971          * packets, just ones we need. */
 972         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 973
 974         while (!skb_queue_empty(&host->pending_packet_queue)) {
 975                 skb = skb_peek(&host->pending_packet_queue);
 976
 977                 packet = (struct hpsb_packet *)skb->data;
 978
 979                 if (time_before(packet->sendtime + expire, jiffies)) {
 980                         __skb_unlink(skb, skb->list);
 981                         packet->state = hpsb_complete;
 982                         packet->ack_code = ACKX_TIMEOUT;
 983                         queue_packet_complete(packet);
 984                 } else {
 985                         /* Since packets are added to the tail, the oldest
 986                          * ones are first, always. When we get to one that
 987                          * isn't timed out, the rest aren't either. */
 988                         break;
 989                 }
 990         }
 991
 992         if (!skb_queue_empty(&host->pending_packet_queue))
 993                 mod_timer(&host->timeout, jiffies + host->timeout_interval);
 994
 995         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 996 }
 997
 998
 999 /* Kernel thread and vars, which handles packets that are completed. Only
1000  * packets that have a "complete" function are sent here. This way, the
1001  * completion is run out of kernel context, and doesn't block the rest of
1002  * the stack. */
1003 static int khpsbpkt_pid = -1, khpsbpkt_kill;
1004 static DECLARE_COMPLETION(khpsbpkt_complete);
1005 struct sk_buff_head hpsbpkt_queue;
1006 static DECLARE_MUTEX_LOCKED(khpsbpkt_sig);
1007
1008
1009 static void queue_packet_complete(struct hpsb_packet *packet)
1010 {
1011         if (packet->no_waiter) {
1012                 hpsb_free_packet(packet);
1013                 return;
1014         }
1015         if (packet->complete_routine != NULL) {
1016                 skb_queue_tail(&hpsbpkt_queue, packet->skb);
1017
1018                 /* Signal the kernel thread to handle this */
1019                 up(&khpsbpkt_sig);
1020         }
1021         return;
1022 }
1023
1024 static int hpsbpkt_thread(void *__hi)
1025 {
1026         struct sk_buff *skb;
1027         struct hpsb_packet *packet;
1028         void (*complete_routine)(void*);
1029         void *complete_data;
1030
1031         daemonize("khpsbpkt");
1032
1033         while (!down_interruptible(&khpsbpkt_sig)) {
1034                 if (khpsbpkt_kill)
1035                         break;
1036
1037                 if (current->flags & PF_FREEZE) {
1038                         refrigerator(0);
1039                         continue;
1040                 }
1041
1042                 while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) {
1043                         packet = (struct hpsb_packet *)skb->data;
1044
1045                         complete_routine = packet->complete_routine;
1046                         complete_data = packet->complete_data;
1047
1048                         packet->complete_routine = packet->complete_data = NULL;
1049
1050                         complete_routine(complete_data);
1051                 }
1052         }
1053
1054         complete_and_exit(&khpsbpkt_complete, 0);
1055 }
1056
1057
1058 static int __init ieee1394_init(void)
1059 {
1060         int i, ret;
1061
1062         skb_queue_head_init(&hpsbpkt_queue);
1063
1064         /* non-fatal error */
1065         if (hpsb_init_config_roms()) {
1066                 HPSB_ERR("Failed to initialize some config rom entries.\n");
1067                 HPSB_ERR("Some features may not be available\n");
1068         }
1069
1070         khpsbpkt_pid = kernel_thread(hpsbpkt_thread, NULL, CLONE_KERNEL);
1071         if (khpsbpkt_pid < 0) {
1072                 HPSB_ERR("Failed to start hpsbpkt thread!\n");
1073                 ret = -ENOMEM;
1074                 goto exit_cleanup_config_roms;
1075         }
1076
1077         if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
1078                 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
1079                 ret = -ENODEV;
1080                 goto exit_release_kernel_thread;
1081         }
1082
1083         /* actually this is a non-fatal error */
1084         ret = devfs_mk_dir("ieee1394");
1085         if (ret < 0) {
1086                 HPSB_ERR("unable to make devfs dir for device major %d!\n", IEEE1394_MAJOR);
1087                 goto release_chrdev;
1088         }
1089
1090         ret = bus_register(&ieee1394_bus_type);
1091         if (ret < 0) {
1092                 HPSB_INFO("bus register failed");
1093                 goto release_devfs;
1094         }
1095
1096         for (i = 0; fw_bus_attrs[i]; i++) {
1097                 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1098                 if (ret < 0) {
1099                         while (i >= 0) {
1100                                 bus_remove_file(&ieee1394_bus_type,
1101                                                 fw_bus_attrs[i--]);
1102                         }
1103                         bus_unregister(&ieee1394_bus_type);
1104                         goto release_devfs;
1105                 }
1106         }
1107
1108         ret = class_register(&hpsb_host_class);
1109         if (ret < 0)
1110                 goto release_all_bus;
1111
1112         ret = init_csr();
1113         if (ret) {
1114                 HPSB_INFO("init csr failed");
1115                 ret = -ENOMEM;
1116                 goto release_class;
1117         }
1118
1119         if (disable_nodemgr) {
1120                 HPSB_INFO("nodemgr functionality disabled");
1121                 return 0;
1122         }
1123
1124         ret = init_ieee1394_nodemgr();
1125         if (ret < 0) {
1126                 HPSB_INFO("init nodemgr failed");
1127                 goto cleanup_csr;
1128         }
1129
1130         return 0;
1131
1132 cleanup_csr:
1133         cleanup_csr();
1134 release_class:
1135         class_unregister(&hpsb_host_class);
1136 release_all_bus:
1137         for (i = 0; fw_bus_attrs[i]; i++)
1138                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1139         bus_unregister(&ieee1394_bus_type);
1140 release_devfs:
1141         devfs_remove("ieee1394");
1142 release_chrdev:
1143         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1144 exit_release_kernel_thread:
1145         if (khpsbpkt_pid >= 0) {
1146                 kill_proc(khpsbpkt_pid, SIGTERM, 1);
1147                 wait_for_completion(&khpsbpkt_complete);
1148         }
1149 exit_cleanup_config_roms:
1150         hpsb_cleanup_config_roms();
1151         return ret;
1152 }
1153
1154 static void __exit ieee1394_cleanup(void)
1155 {
1156         int i;
1157
1158         if (!disable_nodemgr)
1159                 cleanup_ieee1394_nodemgr();
1160
1161         cleanup_csr();
1162
1163         class_unregister(&hpsb_host_class);
1164         for (i = 0; fw_bus_attrs[i]; i++)
1165                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1166         bus_unregister(&ieee1394_bus_type);
1167
1168         if (khpsbpkt_pid >= 0) {
1169                 khpsbpkt_kill = 1;
1170                 mb();
1171                 up(&khpsbpkt_sig);
1172                 wait_for_completion(&khpsbpkt_complete);
1173         }
1174
1175         hpsb_cleanup_config_roms();
1176
1177         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1178         devfs_remove("ieee1394");
1179 }
1180
1181 module_init(ieee1394_init);
1182 module_exit(ieee1394_cleanup);
1183
1184 /* Exported symbols */
1185
1186 /** hosts.c **/
1187 EXPORT_SYMBOL(hpsb_alloc_host);
1188 EXPORT_SYMBOL(hpsb_add_host);
1189 EXPORT_SYMBOL(hpsb_remove_host);
1190 EXPORT_SYMBOL(hpsb_update_config_rom_image);
1191
1192 /** ieee1394_core.c **/
1193 EXPORT_SYMBOL(hpsb_speedto_str);
1194 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
1195 EXPORT_SYMBOL(hpsb_alloc_packet);
1196 EXPORT_SYMBOL(hpsb_free_packet);
1197 EXPORT_SYMBOL(hpsb_send_phy_config);
1198 EXPORT_SYMBOL(hpsb_send_packet);
1199 EXPORT_SYMBOL(hpsb_send_packet_and_wait);
1200 EXPORT_SYMBOL(hpsb_reset_bus);
1201 EXPORT_SYMBOL(hpsb_bus_reset);
1202 EXPORT_SYMBOL(hpsb_selfid_received);
1203 EXPORT_SYMBOL(hpsb_selfid_complete);
1204 EXPORT_SYMBOL(hpsb_packet_sent);
1205 EXPORT_SYMBOL(hpsb_packet_received);
1206
1207 /** ieee1394_transactions.c **/
1208 EXPORT_SYMBOL(hpsb_get_tlabel);
1209 EXPORT_SYMBOL(hpsb_free_tlabel);
1210 EXPORT_SYMBOL(hpsb_make_readpacket);
1211 EXPORT_SYMBOL(hpsb_make_writepacket);
1212 EXPORT_SYMBOL(hpsb_make_streampacket);
1213 EXPORT_SYMBOL(hpsb_make_lockpacket);
1214 EXPORT_SYMBOL(hpsb_make_lock64packet);
1215 EXPORT_SYMBOL(hpsb_make_phypacket);
1216 EXPORT_SYMBOL(hpsb_make_isopacket);
1217 EXPORT_SYMBOL(hpsb_read);
1218 EXPORT_SYMBOL(hpsb_write);
1219 EXPORT_SYMBOL(hpsb_lock);
1220 EXPORT_SYMBOL(hpsb_lock64);
1221 EXPORT_SYMBOL(hpsb_send_gasp);
1222 EXPORT_SYMBOL(hpsb_packet_success);
1223
1224 /** highlevel.c **/
1225 EXPORT_SYMBOL(hpsb_register_highlevel);
1226 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1227 EXPORT_SYMBOL(hpsb_register_addrspace);
1228 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1229 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1230 EXPORT_SYMBOL(hpsb_listen_channel);
1231 EXPORT_SYMBOL(hpsb_unlisten_channel);
1232 EXPORT_SYMBOL(hpsb_get_hostinfo);
1233 EXPORT_SYMBOL(hpsb_get_host_bykey);
1234 EXPORT_SYMBOL(hpsb_create_hostinfo);
1235 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1236 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1237 EXPORT_SYMBOL(hpsb_get_hostinfo_key);
1238 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1239 EXPORT_SYMBOL(hpsb_set_hostinfo);
1240 EXPORT_SYMBOL(highlevel_read);
1241 EXPORT_SYMBOL(highlevel_write);
1242 EXPORT_SYMBOL(highlevel_lock);
1243 EXPORT_SYMBOL(highlevel_lock64);
1244 EXPORT_SYMBOL(highlevel_add_host);
1245 EXPORT_SYMBOL(highlevel_remove_host);
1246 EXPORT_SYMBOL(highlevel_host_reset);
1247
1248 /** nodemgr.c **/
1249 EXPORT_SYMBOL(hpsb_guid_get_entry);
1250 EXPORT_SYMBOL(hpsb_nodeid_get_entry);
1251 EXPORT_SYMBOL(hpsb_node_fill_packet);
1252 EXPORT_SYMBOL(hpsb_node_read);
1253 EXPORT_SYMBOL(hpsb_node_write);
1254 EXPORT_SYMBOL(hpsb_node_lock);
1255 EXPORT_SYMBOL(hpsb_register_protocol);
1256 EXPORT_SYMBOL(hpsb_unregister_protocol);
1257 EXPORT_SYMBOL(ieee1394_bus_type);
1258 EXPORT_SYMBOL(nodemgr_for_each_host);
1259
1260 /** csr.c **/
1261 EXPORT_SYMBOL(hpsb_update_config_rom);
1262
1263 /** dma.c **/
1264 EXPORT_SYMBOL(dma_prog_region_init);
1265 EXPORT_SYMBOL(dma_prog_region_alloc);
1266 EXPORT_SYMBOL(dma_prog_region_free);
1267 EXPORT_SYMBOL(dma_region_init);
1268 EXPORT_SYMBOL(dma_region_alloc);
1269 EXPORT_SYMBOL(dma_region_free);
1270 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1271 EXPORT_SYMBOL(dma_region_sync_for_device);
1272 EXPORT_SYMBOL(dma_region_mmap);
1273 EXPORT_SYMBOL(dma_region_offset_to_bus);
1274
1275 /** iso.c **/
1276 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1277 EXPORT_SYMBOL(hpsb_iso_recv_init);
1278 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1279 EXPORT_SYMBOL(hpsb_iso_recv_start);
1280 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1281 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1282 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1283 EXPORT_SYMBOL(hpsb_iso_stop);
1284 EXPORT_SYMBOL(hpsb_iso_shutdown);
1285 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1286 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1287 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1288 EXPORT_SYMBOL(hpsb_iso_n_ready);
1289 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1290 EXPORT_SYMBOL(hpsb_iso_packet_received);
1291 EXPORT_SYMBOL(hpsb_iso_wake);
1292 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1293
1294 /** csr1212.c **/
1295 EXPORT_SYMBOL(csr1212_create_csr);
1296 EXPORT_SYMBOL(csr1212_init_local_csr);
1297 EXPORT_SYMBOL(csr1212_new_immediate);
1298 EXPORT_SYMBOL(csr1212_new_leaf);
1299 EXPORT_SYMBOL(csr1212_new_csr_offset);
1300 EXPORT_SYMBOL(csr1212_new_directory);
1301 EXPORT_SYMBOL(csr1212_associate_keyval);
1302 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1303 EXPORT_SYMBOL(csr1212_new_extended_immediate);
1304 EXPORT_SYMBOL(csr1212_new_extended_leaf);
1305 EXPORT_SYMBOL(csr1212_new_descriptor_leaf);
1306 EXPORT_SYMBOL(csr1212_new_textual_descriptor_leaf);
1307 EXPORT_SYMBOL(csr1212_new_string_descriptor_leaf);
1308 EXPORT_SYMBOL(csr1212_new_icon_descriptor_leaf);
1309 EXPORT_SYMBOL(csr1212_new_modifiable_descriptor_leaf);
1310 EXPORT_SYMBOL(csr1212_new_keyword_leaf);
1311 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1312 EXPORT_SYMBOL(csr1212_disassociate_keyval);
1313 EXPORT_SYMBOL(csr1212_release_keyval);
1314 EXPORT_SYMBOL(csr1212_destroy_csr);
1315 EXPORT_SYMBOL(csr1212_read);
1316 EXPORT_SYMBOL(csr1212_generate_positions);
1317 EXPORT_SYMBOL(csr1212_generate_layout_order);
1318 EXPORT_SYMBOL(csr1212_fill_cache);
1319 EXPORT_SYMBOL(csr1212_generate_csr_image);
1320 EXPORT_SYMBOL(csr1212_parse_keyval);
1321 EXPORT_SYMBOL(csr1212_parse_csr);
1322 EXPORT_SYMBOL(_csr1212_read_keyval);
1323 EXPORT_SYMBOL(_csr1212_destroy_keyval);