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/kernel.h>
  24 #include <linux/list.h>
  25 #include <linux/string.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <linux/bitops.h>
  32 #include <linux/kdev_t.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/suspend.h>
  35 #include <linux/kthread.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;
  56 module_param(disable_nodemgr, int, 0444);
  57 MODULE_PARM_DESC(disable_nodemgr, "Disable nodemgr functionality.");
  58
  59 /* Disable Isochronous Resource Manager functionality */
  60 int hpsb_disable_irm = 0;
  61 module_param_named(disable_irm, hpsb_disable_irm, bool, 0444);
  62 MODULE_PARM_DESC(disable_irm,
  63                  "Disable Isochronous Resource Manager functionality.");
  64
  65 /* We are GPL, so treat us special */
  66 MODULE_LICENSE("GPL");
  67
  68 /* Some globals used */
  69 const char *hpsb_speedto_str[] = { "S100", "S200", "S400", "S800", "S1600", "S3200" };
  70 struct class *hpsb_protocol_class;
  71
  72 #ifdef CONFIG_IEEE1394_VERBOSEDEBUG
  73 static void dump_packet(const char *text, quadlet_t *data, int size, int speed)
  74 {
  75         int i;
  76
  77         size /= 4;
  78         size = (size > 4 ? 4 : size);
  79
  80         printk(KERN_DEBUG "ieee1394: %s", text);
  81         if (speed > -1 && speed < 6)
  82                 printk(" at %s", hpsb_speedto_str[speed]);
  83         printk(":");
  84         for (i = 0; i < size; i++)
  85                 printk(" %08x", data[i]);
  86         printk("\n");
  87 }
  88 #else
  89 #define dump_packet(a,b,c,d)
  90 #endif
  91
  92 static void abort_requests(struct hpsb_host *host);
  93 static void queue_packet_complete(struct hpsb_packet *packet);
  94
  95
  96 /**
  97  * hpsb_set_packet_complete_task - set the task that runs when a packet
  98  * completes. You cannot call this more than once on a single packet
  99  * before it is sent.
 100  *
 101  * @packet: the packet whose completion we want the task added to
 102  * @routine: function to call
 103  * @data: data (if any) to pass to the above function
 104  */
 105 void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
 106                                    void (*routine)(void *), void *data)
 107 {
 108         WARN_ON(packet->complete_routine != NULL);
 109         packet->complete_routine = routine;
 110         packet->complete_data = data;
 111         return;
 112 }
 113
 114 /**
 115  * hpsb_alloc_packet - allocate new packet structure
 116  * @data_size: size of the data block to be allocated
 117  *
 118  * This function allocates, initializes and returns a new &struct hpsb_packet.
 119  * It can be used in interrupt context.  A header block is always included, its
 120  * size is big enough to contain all possible 1394 headers.  The data block is
 121  * only allocated when @data_size is not zero.
 122  *
 123  * For packets for which responses will be received the @data_size has to be big
 124  * enough to contain the response's data block since no further allocation
 125  * occurs at response matching time.
 126  *
 127  * The packet's generation value will be set to the current generation number
 128  * for ease of use.  Remember to overwrite it with your own recorded generation
 129  * number if you can not be sure that your code will not race with a bus reset.
 130  *
 131  * Return value: A pointer to a &struct hpsb_packet or NULL on allocation
 132  * failure.
 133  */
 134 struct hpsb_packet *hpsb_alloc_packet(size_t data_size)
 135 {
 136         struct hpsb_packet *packet = NULL;
 137         struct sk_buff *skb;
 138
 139         data_size = ((data_size + 3) & ~3);
 140
 141         skb = alloc_skb(data_size + sizeof(*packet), GFP_ATOMIC);
 142         if (skb == NULL)
 143                 return NULL;
 144
 145         memset(skb->data, 0, data_size + sizeof(*packet));
 146
 147         packet = (struct hpsb_packet *)skb->data;
 148         packet->skb = skb;
 149
 150         packet->header = packet->embedded_header;
 151         packet->state = hpsb_unused;
 152         packet->generation = -1;
 153         INIT_LIST_HEAD(&packet->driver_list);
 154         atomic_set(&packet->refcnt, 1);
 155
 156         if (data_size) {
 157                 packet->data = (quadlet_t *)(skb->data + sizeof(*packet));
 158                 packet->data_size = data_size;
 159         }
 160
 161         return packet;
 162 }
 163
 164
 165 /**
 166  * hpsb_free_packet - free packet and data associated with it
 167  * @packet: packet to free (is NULL safe)
 168  *
 169  * This function will free packet->data and finally the packet itself.
 170  */
 171 void hpsb_free_packet(struct hpsb_packet *packet)
 172 {
 173         if (packet && atomic_dec_and_test(&packet->refcnt)) {
 174                 BUG_ON(!list_empty(&packet->driver_list));
 175                 kfree_skb(packet->skb);
 176         }
 177 }
 178
 179
 180 int hpsb_reset_bus(struct hpsb_host *host, int type)
 181 {
 182         if (!host->in_bus_reset) {
 183                 host->driver->devctl(host, RESET_BUS, type);
 184                 return 0;
 185         } else {
 186                 return 1;
 187         }
 188 }
 189
 190
 191 int hpsb_bus_reset(struct hpsb_host *host)
 192 {
 193         if (host->in_bus_reset) {
 194                 HPSB_NOTICE("%s called while bus reset already in progress",
 195                             __FUNCTION__);
 196                 return 1;
 197         }
 198
 199         abort_requests(host);
 200         host->in_bus_reset = 1;
 201         host->irm_id = -1;
 202         host->is_irm = 0;
 203         host->busmgr_id = -1;
 204         host->is_busmgr = 0;
 205         host->is_cycmst = 0;
 206         host->node_count = 0;
 207         host->selfid_count = 0;
 208
 209         return 0;
 210 }
 211
 212
 213 /*
 214  * Verify num_of_selfids SelfIDs and return number of nodes.  Return zero in
 215  * case verification failed.
 216  */
 217 static int check_selfids(struct hpsb_host *host)
 218 {
 219         int nodeid = -1;
 220         int rest_of_selfids = host->selfid_count;
 221         struct selfid *sid = (struct selfid *)host->topology_map;
 222         struct ext_selfid *esid;
 223         int esid_seq = 23;
 224
 225         host->nodes_active = 0;
 226
 227         while (rest_of_selfids--) {
 228                 if (!sid->extended) {
 229                         nodeid++;
 230                         esid_seq = 0;
 231
 232                         if (sid->phy_id != nodeid) {
 233                                 HPSB_INFO("SelfIDs failed monotony check with "
 234                                           "%d", sid->phy_id);
 235                                 return 0;
 236                         }
 237
 238                         if (sid->link_active) {
 239                                 host->nodes_active++;
 240                                 if (sid->contender)
 241                                         host->irm_id = LOCAL_BUS | sid->phy_id;
 242                         }
 243                 } else {
 244                         esid = (struct ext_selfid *)sid;
 245
 246                         if ((esid->phy_id != nodeid)
 247                             || (esid->seq_nr != esid_seq)) {
 248                                 HPSB_INFO("SelfIDs failed monotony check with "
 249                                           "%d/%d", esid->phy_id, esid->seq_nr);
 250                                 return 0;
 251                         }
 252                         esid_seq++;
 253                 }
 254                 sid++;
 255         }
 256
 257         esid = (struct ext_selfid *)(sid - 1);
 258         while (esid->extended) {
 259                 if ((esid->porta == SELFID_PORT_PARENT) ||
 260                     (esid->portb == SELFID_PORT_PARENT) ||
 261                     (esid->portc == SELFID_PORT_PARENT) ||
 262                     (esid->portd == SELFID_PORT_PARENT) ||
 263                     (esid->porte == SELFID_PORT_PARENT) ||
 264                     (esid->portf == SELFID_PORT_PARENT) ||
 265                     (esid->portg == SELFID_PORT_PARENT) ||
 266                     (esid->porth == SELFID_PORT_PARENT)) {
 267                         HPSB_INFO("SelfIDs failed root check on "
 268                                   "extended SelfID");
 269                         return 0;
 270                 }
 271                 esid--;
 272         }
 273
 274         sid = (struct selfid *)esid;
 275         if ((sid->port0 == SELFID_PORT_PARENT) ||
 276             (sid->port1 == SELFID_PORT_PARENT) ||
 277             (sid->port2 == SELFID_PORT_PARENT)) {
 278                 HPSB_INFO("SelfIDs failed root check");
 279                 return 0;
 280         }
 281
 282         host->node_count = nodeid + 1;
 283         return 1;
 284 }
 285
 286 static void build_speed_map(struct hpsb_host *host, int nodecount)
 287 {
 288         u8 cldcnt[nodecount];
 289         u8 *map = host->speed_map;
 290         u8 *speedcap = host->speed;
 291         struct selfid *sid;
 292         struct ext_selfid *esid;
 293         int i, j, n;
 294
 295         for (i = 0; i < (nodecount * 64); i += 64) {
 296                 for (j = 0; j < nodecount; j++) {
 297                         map[i+j] = IEEE1394_SPEED_MAX;
 298                 }
 299         }
 300
 301         for (i = 0; i < nodecount; i++) {
 302                 cldcnt[i] = 0;
 303         }
 304
 305         /* find direct children count and speed */
 306         for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
 307                      n = nodecount - 1;
 308              (void *)sid >= (void *)host->topology_map; sid--) {
 309                 if (sid->extended) {
 310                         esid = (struct ext_selfid *)sid;
 311
 312                         if (esid->porta == SELFID_PORT_CHILD) cldcnt[n]++;
 313                         if (esid->portb == SELFID_PORT_CHILD) cldcnt[n]++;
 314                         if (esid->portc == SELFID_PORT_CHILD) cldcnt[n]++;
 315                         if (esid->portd == SELFID_PORT_CHILD) cldcnt[n]++;
 316                         if (esid->porte == SELFID_PORT_CHILD) cldcnt[n]++;
 317                         if (esid->portf == SELFID_PORT_CHILD) cldcnt[n]++;
 318                         if (esid->portg == SELFID_PORT_CHILD) cldcnt[n]++;
 319                         if (esid->porth == SELFID_PORT_CHILD) cldcnt[n]++;
 320                 } else {
 321                         if (sid->port0 == SELFID_PORT_CHILD) cldcnt[n]++;
 322                         if (sid->port1 == SELFID_PORT_CHILD) cldcnt[n]++;
 323                         if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++;
 324
 325                         speedcap[n] = sid->speed;
 326                         n--;
 327                 }
 328         }
 329
 330         /* set self mapping */
 331         for (i = 0; i < nodecount; i++) {
 332                 map[64*i + i] = speedcap[i];
 333         }
 334
 335         /* fix up direct children count to total children count;
 336          * also fix up speedcaps for sibling and parent communication */
 337         for (i = 1; i < nodecount; i++) {
 338                 for (j = cldcnt[i], n = i - 1; j > 0; j--) {
 339                         cldcnt[i] += cldcnt[n];
 340                         speedcap[n] = min(speedcap[n], speedcap[i]);
 341                         n -= cldcnt[n] + 1;
 342                 }
 343         }
 344
 345         for (n = 0; n < nodecount; n++) {
 346                 for (i = n - cldcnt[n]; i <= n; i++) {
 347                         for (j = 0; j < (n - cldcnt[n]); j++) {
 348                                 map[j*64 + i] = map[i*64 + j] =
 349                                         min(map[i*64 + j], speedcap[n]);
 350                         }
 351                         for (j = n + 1; j < nodecount; j++) {
 352                                 map[j*64 + i] = map[i*64 + j] =
 353                                         min(map[i*64 + j], speedcap[n]);
 354                         }
 355                 }
 356         }
 357
 358         /* assume maximum speed for 1394b PHYs, nodemgr will correct it */
 359         for (n = 0; n < nodecount; n++)
 360                 if (speedcap[n] == 3)
 361                         speedcap[n] = IEEE1394_SPEED_MAX;
 362 }
 363
 364
 365 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 366 {
 367         if (host->in_bus_reset) {
 368                 HPSB_VERBOSE("Including SelfID 0x%x", sid);
 369                 host->topology_map[host->selfid_count++] = sid;
 370         } else {
 371                 HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
 372                             sid, NODEID_TO_BUS(host->node_id));
 373         }
 374 }
 375
 376 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 377 {
 378         if (!host->in_bus_reset)
 379                 HPSB_NOTICE("SelfID completion called outside of bus reset!");
 380
 381         host->node_id = LOCAL_BUS | phyid;
 382         host->is_root = isroot;
 383
 384         if (!check_selfids(host)) {
 385                 if (host->reset_retries++ < 20) {
 386                         /* selfid stage did not complete without error */
 387                         HPSB_NOTICE("Error in SelfID stage, resetting");
 388                         host->in_bus_reset = 0;
 389                         /* this should work from ohci1394 now... */
 390                         hpsb_reset_bus(host, LONG_RESET);
 391                         return;
 392                 } else {
 393                         HPSB_NOTICE("Stopping out-of-control reset loop");
 394                         HPSB_NOTICE("Warning - topology map and speed map will not be valid");
 395                         host->reset_retries = 0;
 396                 }
 397         } else {
 398                 host->reset_retries = 0;
 399                 build_speed_map(host, host->node_count);
 400         }
 401
 402         HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
 403                      "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
 404
 405         /* irm_id is kept up to date by check_selfids() */
 406         if (host->irm_id == host->node_id) {
 407                 host->is_irm = 1;
 408         } else {
 409                 host->is_busmgr = 0;
 410                 host->is_irm = 0;
 411         }
 412
 413         if (isroot) {
 414                 host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
 415                 host->is_cycmst = 1;
 416         }
 417         atomic_inc(&host->generation);
 418         host->in_bus_reset = 0;
 419         highlevel_host_reset(host);
 420 }
 421
 422
 423 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 424                       int ackcode)
 425 {
 426         unsigned long flags;
 427
 428         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 429
 430         packet->ack_code = ackcode;
 431
 432         if (packet->no_waiter || packet->state == hpsb_complete) {
 433                 /* if packet->no_waiter, must not have a tlabel allocated */
 434                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 435                 hpsb_free_packet(packet);
 436                 return;
 437         }
 438
 439         atomic_dec(&packet->refcnt);    /* drop HC's reference */
 440         /* here the packet must be on the host->pending_packet_queue */
 441
 442         if (ackcode != ACK_PENDING || !packet->expect_response) {
 443                 packet->state = hpsb_complete;
 444                 __skb_unlink(packet->skb, &host->pending_packet_queue);
 445                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 446                 queue_packet_complete(packet);
 447                 return;
 448         }
 449
 450         packet->state = hpsb_pending;
 451         packet->sendtime = jiffies;
 452
 453         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 454
 455         mod_timer(&host->timeout, jiffies + host->timeout_interval);
 456 }
 457
 458 /**
 459  * hpsb_send_phy_config - transmit a PHY configuration packet on the bus
 460  * @host: host that PHY config packet gets sent through
 461  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
 462  * @gapcnt: gap count value to set (-1 = don't set gap count)
 463  *
 464  * This function sends a PHY config packet on the bus through the specified host.
 465  *
 466  * Return value: 0 for success or error number otherwise.
 467  */
 468 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 469 {
 470         struct hpsb_packet *packet;
 471         quadlet_t d = 0;
 472         int retval = 0;
 473
 474         if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
 475            (rootid == -1 && gapcnt == -1)) {
 476                 HPSB_DEBUG("Invalid Parameter: rootid = %d   gapcnt = %d",
 477                            rootid, gapcnt);
 478                 return -EINVAL;
 479         }
 480
 481         if (rootid != -1)
 482                 d |= PHYPACKET_PHYCONFIG_R | rootid << PHYPACKET_PORT_SHIFT;
 483         if (gapcnt != -1)
 484                 d |= PHYPACKET_PHYCONFIG_T | gapcnt << PHYPACKET_GAPCOUNT_SHIFT;
 485
 486         packet = hpsb_make_phypacket(host, d);
 487         if (!packet)
 488                 return -ENOMEM;
 489
 490         packet->generation = get_hpsb_generation(host);
 491         retval = hpsb_send_packet_and_wait(packet);
 492         hpsb_free_packet(packet);
 493
 494         return retval;
 495 }
 496
 497 /**
 498  * hpsb_send_packet - transmit a packet on the bus
 499  * @packet: packet to send
 500  *
 501  * The packet is sent through the host specified in the packet->host field.
 502  * Before sending, the packet's transmit speed is automatically determined
 503  * using the local speed map when it is an async, non-broadcast packet.
 504  *
 505  * Possibilities for failure are that host is either not initialized, in bus
 506  * reset, the packet's generation number doesn't match the current generation
 507  * number or the host reports a transmit error.
 508  *
 509  * Return value: 0 on success, negative errno on failure.
 510  */
 511 int hpsb_send_packet(struct hpsb_packet *packet)
 512 {
 513         struct hpsb_host *host = packet->host;
 514
 515         if (host->is_shutdown)
 516                 return -EINVAL;
 517         if (host->in_bus_reset ||
 518             (packet->generation != get_hpsb_generation(host)))
 519                 return -EAGAIN;
 520
 521         packet->state = hpsb_queued;
 522
 523         /* This just seems silly to me */
 524         WARN_ON(packet->no_waiter && packet->expect_response);
 525
 526         if (!packet->no_waiter || packet->expect_response) {
 527                 atomic_inc(&packet->refcnt);
 528                 /* Set the initial "sendtime" to 10 seconds from now, to
 529                    prevent premature expiry.  If a packet takes more than
 530                    10 seconds to hit the wire, we have bigger problems :) */
 531                 packet->sendtime = jiffies + 10 * HZ;
 532                 skb_queue_tail(&host->pending_packet_queue, packet->skb);
 533         }
 534
 535         if (packet->node_id == host->node_id) {
 536                 /* it is a local request, so handle it locally */
 537
 538                 quadlet_t *data;
 539                 size_t size = packet->data_size + packet->header_size;
 540
 541                 data = kmalloc(size, GFP_ATOMIC);
 542                 if (!data) {
 543                         HPSB_ERR("unable to allocate memory for concatenating header and data");
 544                         return -ENOMEM;
 545                 }
 546
 547                 memcpy(data, packet->header, packet->header_size);
 548
 549                 if (packet->data_size)
 550                         memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size);
 551
 552                 dump_packet("send packet local", packet->header, packet->header_size, -1);
 553
 554                 hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
 555                 hpsb_packet_received(host, data, size, 0);
 556
 557                 kfree(data);
 558
 559                 return 0;
 560         }
 561
 562         if (packet->type == hpsb_async &&
 563             NODEID_TO_NODE(packet->node_id) != ALL_NODES)
 564                 packet->speed_code =
 565                         host->speed[NODEID_TO_NODE(packet->node_id)];
 566
 567         dump_packet("send packet", packet->header, packet->header_size, packet->speed_code);
 568
 569         return host->driver->transmit_packet(host, packet);
 570 }
 571
 572 /* We could just use complete() directly as the packet complete
 573  * callback, but this is more typesafe, in the sense that we get a
 574  * compiler error if the prototype for complete() changes. */
 575
 576 static void complete_packet(void *data)
 577 {
 578         complete((struct completion *) data);
 579 }
 580
 581 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 582 {
 583         struct completion done;
 584         int retval;
 585
 586         init_completion(&done);
 587         hpsb_set_packet_complete_task(packet, complete_packet, &done);
 588         retval = hpsb_send_packet(packet);
 589         if (retval == 0)
 590                 wait_for_completion(&done);
 591
 592         return retval;
 593 }
 594
 595 static void send_packet_nocare(struct hpsb_packet *packet)
 596 {
 597         if (hpsb_send_packet(packet) < 0) {
 598                 hpsb_free_packet(packet);
 599         }
 600 }
 601
 602
 603 static void handle_packet_response(struct hpsb_host *host, int tcode,
 604                                    quadlet_t *data, size_t size)
 605 {
 606         struct hpsb_packet *packet = NULL;
 607         struct sk_buff *skb;
 608         int tcode_match = 0;
 609         int tlabel;
 610         unsigned long flags;
 611
 612         tlabel = (data[0] >> 10) & 0x3f;
 613
 614         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 615
 616         skb_queue_walk(&host->pending_packet_queue, skb) {
 617                 packet = (struct hpsb_packet *)skb->data;
 618                 if ((packet->tlabel == tlabel)
 619                     && (packet->node_id == (data[1] >> 16))){
 620                         break;
 621                 }
 622
 623                 packet = NULL;
 624         }
 625
 626         if (packet == NULL) {
 627                 HPSB_DEBUG("unsolicited response packet received - no tlabel match");
 628                 dump_packet("contents", data, 16, -1);
 629                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 630                 return;
 631         }
 632
 633         switch (packet->tcode) {
 634         case TCODE_WRITEQ:
 635         case TCODE_WRITEB:
 636                 if (tcode != TCODE_WRITE_RESPONSE)
 637                         break;
 638                 tcode_match = 1;
 639                 memcpy(packet->header, data, 12);
 640                 break;
 641         case TCODE_READQ:
 642                 if (tcode != TCODE_READQ_RESPONSE)
 643                         break;
 644                 tcode_match = 1;
 645                 memcpy(packet->header, data, 16);
 646                 break;
 647         case TCODE_READB:
 648                 if (tcode != TCODE_READB_RESPONSE)
 649                         break;
 650                 tcode_match = 1;
 651                 BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
 652                 memcpy(packet->header, data, 16);
 653                 memcpy(packet->data, data + 4, size - 16);
 654                 break;
 655         case TCODE_LOCK_REQUEST:
 656                 if (tcode != TCODE_LOCK_RESPONSE)
 657                         break;
 658                 tcode_match = 1;
 659                 size = min((size - 16), (size_t)8);
 660                 BUG_ON(packet->skb->len - sizeof(*packet) < size);
 661                 memcpy(packet->header, data, 16);
 662                 memcpy(packet->data, data + 4, size);
 663                 break;
 664         }
 665
 666         if (!tcode_match) {
 667                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 668                 HPSB_INFO("unsolicited response packet received - tcode mismatch");
 669                 dump_packet("contents", data, 16, -1);
 670                 return;
 671         }
 672
 673         __skb_unlink(skb, &host->pending_packet_queue);
 674
 675         if (packet->state == hpsb_queued) {
 676                 packet->sendtime = jiffies;
 677                 packet->ack_code = ACK_PENDING;
 678         }
 679
 680         packet->state = hpsb_complete;
 681         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 682
 683         queue_packet_complete(packet);
 684 }
 685
 686
 687 static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 688                                                quadlet_t *data, size_t dsize)
 689 {
 690         struct hpsb_packet *p;
 691
 692         p = hpsb_alloc_packet(dsize);
 693         if (unlikely(p == NULL)) {
 694                 /* FIXME - send data_error response */
 695                 return NULL;
 696         }
 697
 698         p->type = hpsb_async;
 699         p->state = hpsb_unused;
 700         p->host = host;
 701         p->node_id = data[1] >> 16;
 702         p->tlabel = (data[0] >> 10) & 0x3f;
 703         p->no_waiter = 1;
 704
 705         p->generation = get_hpsb_generation(host);
 706
 707         if (dsize % 4)
 708                 p->data[dsize / 4] = 0;
 709
 710         return p;
 711 }
 712
 713 #define PREP_ASYNC_HEAD_RCODE(tc) \
 714         packet->tcode = tc; \
 715         packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \
 716                 | (1 << 8) | (tc << 4); \
 717         packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \
 718         packet->header[2] = 0
 719
 720 static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
 721                               quadlet_t data)
 722 {
 723         PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
 724         packet->header[3] = data;
 725         packet->header_size = 16;
 726         packet->data_size = 0;
 727 }
 728
 729 static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 730                                int length)
 731 {
 732         if (rcode != RCODE_COMPLETE)
 733                 length = 0;
 734
 735         PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE);
 736         packet->header[3] = length << 16;
 737         packet->header_size = 16;
 738         packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0);
 739 }
 740
 741 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 742 {
 743         PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
 744         packet->header[2] = 0;
 745         packet->header_size = 12;
 746         packet->data_size = 0;
 747 }
 748
 749 static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
 750                           int length)
 751 {
 752         if (rcode != RCODE_COMPLETE)
 753                 length = 0;
 754
 755         PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE);
 756         packet->header[3] = (length << 16) | extcode;
 757         packet->header_size = 16;
 758         packet->data_size = length;
 759 }
 760
 761 #define PREP_REPLY_PACKET(length) \
 762                 packet = create_reply_packet(host, data, length); \
 763                 if (packet == NULL) break
 764
 765 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 766                                    quadlet_t *data, size_t size, int write_acked)
 767 {
 768         struct hpsb_packet *packet;
 769         int length, rcode, extcode;
 770         quadlet_t buffer;
 771         nodeid_t source = data[1] >> 16;
 772         nodeid_t dest = data[0] >> 16;
 773         u16 flags = (u16) data[0];
 774         u64 addr;
 775
 776         /* big FIXME - no error checking is done for an out of bounds length */
 777
 778         switch (tcode) {
 779         case TCODE_WRITEQ:
 780                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 781                 rcode = highlevel_write(host, source, dest, data+3,
 782                                         addr, 4, flags);
 783
 784                 if (!write_acked
 785                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 786                     && (rcode >= 0)) {
 787                         /* not a broadcast write, reply */
 788                         PREP_REPLY_PACKET(0);
 789                         fill_async_write_resp(packet, rcode);
 790                         send_packet_nocare(packet);
 791                 }
 792                 break;
 793
 794         case TCODE_WRITEB:
 795                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 796                 rcode = highlevel_write(host, source, dest, data+4,
 797                                         addr, data[3]>>16, flags);
 798
 799                 if (!write_acked
 800                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 801                     && (rcode >= 0)) {
 802                         /* not a broadcast write, reply */
 803                         PREP_REPLY_PACKET(0);
 804                         fill_async_write_resp(packet, rcode);
 805                         send_packet_nocare(packet);
 806                 }
 807                 break;
 808
 809         case TCODE_READQ:
 810                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 811                 rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
 812
 813                 if (rcode >= 0) {
 814                         PREP_REPLY_PACKET(0);
 815                         fill_async_readquad_resp(packet, rcode, buffer);
 816                         send_packet_nocare(packet);
 817                 }
 818                 break;
 819
 820         case TCODE_READB:
 821                 length = data[3] >> 16;
 822                 PREP_REPLY_PACKET(length);
 823
 824                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 825                 rcode = highlevel_read(host, source, packet->data, addr,
 826                                        length, flags);
 827
 828                 if (rcode >= 0) {
 829                         fill_async_readblock_resp(packet, rcode, length);
 830                         send_packet_nocare(packet);
 831                 } else {
 832                         hpsb_free_packet(packet);
 833                 }
 834                 break;
 835
 836         case TCODE_LOCK_REQUEST:
 837                 length = data[3] >> 16;
 838                 extcode = data[3] & 0xffff;
 839                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 840
 841                 PREP_REPLY_PACKET(8);
 842
 843                 if ((extcode == 0) || (extcode >= 7)) {
 844                         /* let switch default handle error */
 845                         length = 0;
 846                 }
 847
 848                 switch (length) {
 849                 case 4:
 850                         rcode = highlevel_lock(host, source, packet->data, addr,
 851                                                data[4], 0, extcode,flags);
 852                         fill_async_lock_resp(packet, rcode, extcode, 4);
 853                         break;
 854                 case 8:
 855                         if ((extcode != EXTCODE_FETCH_ADD)
 856                             && (extcode != EXTCODE_LITTLE_ADD)) {
 857                                 rcode = highlevel_lock(host, source,
 858                                                        packet->data, addr,
 859                                                        data[5], data[4],
 860                                                        extcode, flags);
 861                                 fill_async_lock_resp(packet, rcode, extcode, 4);
 862                         } else {
 863                                 rcode = highlevel_lock64(host, source,
 864                                              (octlet_t *)packet->data, addr,
 865                                              *(octlet_t *)(data + 4), 0ULL,
 866                                              extcode, flags);
 867                                 fill_async_lock_resp(packet, rcode, extcode, 8);
 868                         }
 869                         break;
 870                 case 16:
 871                         rcode = highlevel_lock64(host, source,
 872                                                  (octlet_t *)packet->data, addr,
 873                                                  *(octlet_t *)(data + 6),
 874                                                  *(octlet_t *)(data + 4),
 875                                                  extcode, flags);
 876                         fill_async_lock_resp(packet, rcode, extcode, 8);
 877                         break;
 878                 default:
 879                         rcode = RCODE_TYPE_ERROR;
 880                         fill_async_lock_resp(packet, rcode,
 881                                              extcode, 0);
 882                 }
 883
 884                 if (rcode >= 0) {
 885                         send_packet_nocare(packet);
 886                 } else {
 887                         hpsb_free_packet(packet);
 888                 }
 889                 break;
 890         }
 891
 892 }
 893 #undef PREP_REPLY_PACKET
 894
 895
 896 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 897                           int write_acked)
 898 {
 899         int tcode;
 900
 901         if (host->in_bus_reset) {
 902                 HPSB_INFO("received packet during reset; ignoring");
 903                 return;
 904         }
 905
 906         dump_packet("received packet", data, size, -1);
 907
 908         tcode = (data[0] >> 4) & 0xf;
 909
 910         switch (tcode) {
 911         case TCODE_WRITE_RESPONSE:
 912         case TCODE_READQ_RESPONSE:
 913         case TCODE_READB_RESPONSE:
 914         case TCODE_LOCK_RESPONSE:
 915                 handle_packet_response(host, tcode, data, size);
 916                 break;
 917
 918         case TCODE_WRITEQ:
 919         case TCODE_WRITEB:
 920         case TCODE_READQ:
 921         case TCODE_READB:
 922         case TCODE_LOCK_REQUEST:
 923                 handle_incoming_packet(host, tcode, data, size, write_acked);
 924                 break;
 925
 926
 927         case TCODE_ISO_DATA:
 928                 highlevel_iso_receive(host, data, size);
 929                 break;
 930
 931         case TCODE_CYCLE_START:
 932                 /* simply ignore this packet if it is passed on */
 933                 break;
 934
 935         default:
 936                 HPSB_NOTICE("received packet with bogus transaction code %d",
 937                             tcode);
 938                 break;
 939         }
 940 }
 941
 942
 943 static void abort_requests(struct hpsb_host *host)
 944 {
 945         struct hpsb_packet *packet;
 946         struct sk_buff *skb;
 947
 948         host->driver->devctl(host, CANCEL_REQUESTS, 0);
 949
 950         while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) {
 951                 packet = (struct hpsb_packet *)skb->data;
 952
 953                 packet->state = hpsb_complete;
 954                 packet->ack_code = ACKX_ABORTED;
 955                 queue_packet_complete(packet);
 956         }
 957 }
 958
 959 void abort_timedouts(unsigned long __opaque)
 960 {
 961         struct hpsb_host *host = (struct hpsb_host *)__opaque;
 962         unsigned long flags;
 963         struct hpsb_packet *packet;
 964         struct sk_buff *skb;
 965         unsigned long expire;
 966
 967         spin_lock_irqsave(&host->csr.lock, flags);
 968         expire = host->csr.expire;
 969         spin_unlock_irqrestore(&host->csr.lock, flags);
 970
 971         /* Hold the lock around this, since we aren't dequeuing all
 972          * packets, just ones we need. */
 973         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 974
 975         while (!skb_queue_empty(&host->pending_packet_queue)) {
 976                 skb = skb_peek(&host->pending_packet_queue);
 977
 978                 packet = (struct hpsb_packet *)skb->data;
 979
 980                 if (time_before(packet->sendtime + expire, jiffies)) {
 981                         __skb_unlink(skb, &host->pending_packet_queue);
 982                         packet->state = hpsb_complete;
 983                         packet->ack_code = ACKX_TIMEOUT;
 984                         queue_packet_complete(packet);
 985                 } else {
 986                         /* Since packets are added to the tail, the oldest
 987                          * ones are first, always. When we get to one that
 988                          * isn't timed out, the rest aren't either. */
 989                         break;
 990                 }
 991         }
 992
 993         if (!skb_queue_empty(&host->pending_packet_queue))
 994                 mod_timer(&host->timeout, jiffies + host->timeout_interval);
 995
 996         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 997 }
 998
 999
1000 /* Kernel thread and vars, which handles packets that are completed. Only
1001  * packets that have a "complete" function are sent here. This way, the
1002  * completion is run out of kernel context, and doesn't block the rest of
1003  * the stack. */
1004 static struct task_struct *khpsbpkt_thread;
1005 static struct sk_buff_head hpsbpkt_queue;
1006
1007 static void queue_packet_complete(struct hpsb_packet *packet)
1008 {
1009         if (packet->no_waiter) {
1010                 hpsb_free_packet(packet);
1011                 return;
1012         }
1013         if (packet->complete_routine != NULL) {
1014                 skb_queue_tail(&hpsbpkt_queue, packet->skb);
1015                 wake_up_process(khpsbpkt_thread);
1016         }
1017         return;
1018 }
1019
1020 static int hpsbpkt_thread(void *__hi)
1021 {
1022         struct sk_buff *skb;
1023         struct hpsb_packet *packet;
1024         void (*complete_routine)(void*);
1025         void *complete_data;
1026
1027         current->flags |= PF_NOFREEZE;
1028
1029         while (!kthread_should_stop()) {
1030                 while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) {
1031                         packet = (struct hpsb_packet *)skb->data;
1032
1033                         complete_routine = packet->complete_routine;
1034                         complete_data = packet->complete_data;
1035
1036                         packet->complete_routine = packet->complete_data = NULL;
1037
1038                         complete_routine(complete_data);
1039                 }
1040
1041                 set_current_state(TASK_INTERRUPTIBLE);
1042                 if (!skb_peek(&hpsbpkt_queue))
1043                         schedule();
1044                 __set_current_state(TASK_RUNNING);
1045         }
1046         return 0;
1047 }
1048
1049 static int __init ieee1394_init(void)
1050 {
1051         int i, ret;
1052
1053         skb_queue_head_init(&hpsbpkt_queue);
1054
1055         /* non-fatal error */
1056         if (hpsb_init_config_roms()) {
1057                 HPSB_ERR("Failed to initialize some config rom entries.\n");
1058                 HPSB_ERR("Some features may not be available\n");
1059         }
1060
1061         khpsbpkt_thread = kthread_run(hpsbpkt_thread, NULL, "khpsbpkt");
1062         if (IS_ERR(khpsbpkt_thread)) {
1063                 HPSB_ERR("Failed to start hpsbpkt thread!\n");
1064                 ret = PTR_ERR(khpsbpkt_thread);
1065                 goto exit_cleanup_config_roms;
1066         }
1067
1068         if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
1069                 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
1070                 ret = -ENODEV;
1071                 goto exit_release_kernel_thread;
1072         }
1073
1074         ret = bus_register(&ieee1394_bus_type);
1075         if (ret < 0) {
1076                 HPSB_INFO("bus register failed");
1077                 goto release_chrdev;
1078         }
1079
1080         for (i = 0; fw_bus_attrs[i]; i++) {
1081                 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1082                 if (ret < 0) {
1083                         while (i >= 0) {
1084                                 bus_remove_file(&ieee1394_bus_type,
1085                                                 fw_bus_attrs[i--]);
1086                         }
1087                         bus_unregister(&ieee1394_bus_type);
1088                         goto release_chrdev;
1089                 }
1090         }
1091
1092         ret = class_register(&hpsb_host_class);
1093         if (ret < 0)
1094                 goto release_all_bus;
1095
1096         hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol");
1097         if (IS_ERR(hpsb_protocol_class)) {
1098                 ret = PTR_ERR(hpsb_protocol_class);
1099                 goto release_class_host;
1100         }
1101
1102         ret = init_csr();
1103         if (ret) {
1104                 HPSB_INFO("init csr failed");
1105                 ret = -ENOMEM;
1106                 goto release_class_protocol;
1107         }
1108
1109         if (disable_nodemgr) {
1110                 HPSB_INFO("nodemgr and IRM functionality disabled");
1111                 /* We shouldn't contend for IRM with nodemgr disabled, since
1112                    nodemgr implements functionality required of ieee1394a-2000
1113                    IRMs */
1114                 hpsb_disable_irm = 1;
1115
1116                 return 0;
1117         }
1118
1119         if (hpsb_disable_irm) {
1120                 HPSB_INFO("IRM functionality disabled");
1121         }
1122
1123         ret = init_ieee1394_nodemgr();
1124         if (ret < 0) {
1125                 HPSB_INFO("init nodemgr failed");
1126                 goto cleanup_csr;
1127         }
1128
1129         return 0;
1130
1131 cleanup_csr:
1132         cleanup_csr();
1133 release_class_protocol:
1134         class_destroy(hpsb_protocol_class);
1135 release_class_host:
1136         class_unregister(&hpsb_host_class);
1137 release_all_bus:
1138         for (i = 0; fw_bus_attrs[i]; i++)
1139                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1140         bus_unregister(&ieee1394_bus_type);
1141 release_chrdev:
1142         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1143 exit_release_kernel_thread:
1144         kthread_stop(khpsbpkt_thread);
1145 exit_cleanup_config_roms:
1146         hpsb_cleanup_config_roms();
1147         return ret;
1148 }
1149
1150 static void __exit ieee1394_cleanup(void)
1151 {
1152         int i;
1153
1154         if (!disable_nodemgr)
1155                 cleanup_ieee1394_nodemgr();
1156
1157         cleanup_csr();
1158
1159         class_destroy(hpsb_protocol_class);
1160         class_unregister(&hpsb_host_class);
1161         for (i = 0; fw_bus_attrs[i]; i++)
1162                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1163         bus_unregister(&ieee1394_bus_type);
1164
1165         kthread_stop(khpsbpkt_thread);
1166
1167         hpsb_cleanup_config_roms();
1168
1169         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1170 }
1171
1172 module_init(ieee1394_init);
1173 module_exit(ieee1394_cleanup);
1174
1175 /* Exported symbols */
1176
1177 /** hosts.c **/
1178 EXPORT_SYMBOL(hpsb_alloc_host);
1179 EXPORT_SYMBOL(hpsb_add_host);
1180 EXPORT_SYMBOL(hpsb_remove_host);
1181 EXPORT_SYMBOL(hpsb_update_config_rom_image);
1182
1183 /** ieee1394_core.c **/
1184 EXPORT_SYMBOL(hpsb_speedto_str);
1185 EXPORT_SYMBOL(hpsb_protocol_class);
1186 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
1187 EXPORT_SYMBOL(hpsb_alloc_packet);
1188 EXPORT_SYMBOL(hpsb_free_packet);
1189 EXPORT_SYMBOL(hpsb_send_packet);
1190 EXPORT_SYMBOL(hpsb_reset_bus);
1191 EXPORT_SYMBOL(hpsb_bus_reset);
1192 EXPORT_SYMBOL(hpsb_selfid_received);
1193 EXPORT_SYMBOL(hpsb_selfid_complete);
1194 EXPORT_SYMBOL(hpsb_packet_sent);
1195 EXPORT_SYMBOL(hpsb_packet_received);
1196 EXPORT_SYMBOL_GPL(hpsb_disable_irm);
1197 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1198 EXPORT_SYMBOL(hpsb_send_phy_config);
1199 EXPORT_SYMBOL(hpsb_send_packet_and_wait);
1200 #endif
1201
1202 /** ieee1394_transactions.c **/
1203 EXPORT_SYMBOL(hpsb_get_tlabel);
1204 EXPORT_SYMBOL(hpsb_free_tlabel);
1205 EXPORT_SYMBOL(hpsb_make_readpacket);
1206 EXPORT_SYMBOL(hpsb_make_writepacket);
1207 EXPORT_SYMBOL(hpsb_make_streampacket);
1208 EXPORT_SYMBOL(hpsb_make_lockpacket);
1209 EXPORT_SYMBOL(hpsb_make_lock64packet);
1210 EXPORT_SYMBOL(hpsb_make_phypacket);
1211 EXPORT_SYMBOL(hpsb_make_isopacket);
1212 EXPORT_SYMBOL(hpsb_read);
1213 EXPORT_SYMBOL(hpsb_write);
1214 EXPORT_SYMBOL(hpsb_packet_success);
1215
1216 /** highlevel.c **/
1217 EXPORT_SYMBOL(hpsb_register_highlevel);
1218 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1219 EXPORT_SYMBOL(hpsb_register_addrspace);
1220 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1221 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1222 EXPORT_SYMBOL(hpsb_listen_channel);
1223 EXPORT_SYMBOL(hpsb_unlisten_channel);
1224 EXPORT_SYMBOL(hpsb_get_hostinfo);
1225 EXPORT_SYMBOL(hpsb_create_hostinfo);
1226 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1227 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1228 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1229 EXPORT_SYMBOL(hpsb_set_hostinfo);
1230 EXPORT_SYMBOL(highlevel_host_reset);
1231 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1232 EXPORT_SYMBOL(highlevel_add_host);
1233 EXPORT_SYMBOL(highlevel_remove_host);
1234 #endif
1235
1236 /** nodemgr.c **/
1237 EXPORT_SYMBOL(hpsb_node_fill_packet);
1238 EXPORT_SYMBOL(hpsb_node_write);
1239 EXPORT_SYMBOL(hpsb_register_protocol);
1240 EXPORT_SYMBOL(hpsb_unregister_protocol);
1241 EXPORT_SYMBOL(ieee1394_bus_type);
1242 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1243 EXPORT_SYMBOL(nodemgr_for_each_host);
1244 #endif
1245
1246 /** csr.c **/
1247 EXPORT_SYMBOL(hpsb_update_config_rom);
1248
1249 /** dma.c **/
1250 EXPORT_SYMBOL(dma_prog_region_init);
1251 EXPORT_SYMBOL(dma_prog_region_alloc);
1252 EXPORT_SYMBOL(dma_prog_region_free);
1253 EXPORT_SYMBOL(dma_region_init);
1254 EXPORT_SYMBOL(dma_region_alloc);
1255 EXPORT_SYMBOL(dma_region_free);
1256 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1257 EXPORT_SYMBOL(dma_region_sync_for_device);
1258 EXPORT_SYMBOL(dma_region_mmap);
1259 EXPORT_SYMBOL(dma_region_offset_to_bus);
1260
1261 /** iso.c **/
1262 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1263 EXPORT_SYMBOL(hpsb_iso_recv_init);
1264 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1265 EXPORT_SYMBOL(hpsb_iso_recv_start);
1266 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1267 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1268 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1269 EXPORT_SYMBOL(hpsb_iso_stop);
1270 EXPORT_SYMBOL(hpsb_iso_shutdown);
1271 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1272 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1273 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1274 EXPORT_SYMBOL(hpsb_iso_n_ready);
1275 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1276 EXPORT_SYMBOL(hpsb_iso_packet_received);
1277 EXPORT_SYMBOL(hpsb_iso_wake);
1278 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1279
1280 /** csr1212.c **/
1281 EXPORT_SYMBOL(csr1212_new_directory);
1282 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1283 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1284 EXPORT_SYMBOL(csr1212_release_keyval);
1285 EXPORT_SYMBOL(csr1212_read);
1286 EXPORT_SYMBOL(csr1212_parse_keyval);
1287 EXPORT_SYMBOL(_csr1212_read_keyval);
1288 EXPORT_SYMBOL(_csr1212_destroy_keyval);
1289 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1290 EXPORT_SYMBOL(csr1212_create_csr);
1291 EXPORT_SYMBOL(csr1212_init_local_csr);
1292 EXPORT_SYMBOL(csr1212_new_immediate);
1293 EXPORT_SYMBOL(csr1212_associate_keyval);
1294 EXPORT_SYMBOL(csr1212_new_string_descriptor_leaf);
1295 EXPORT_SYMBOL(csr1212_destroy_csr);
1296 EXPORT_SYMBOL(csr1212_generate_csr_image);
1297 EXPORT_SYMBOL(csr1212_parse_csr);
1298 #endif