git.oblomov.eu Git - linux-2.6/blob - 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;
  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, 0);
  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 speedcap[nodecount];
 289         u8 cldcnt[nodecount];
 290         u8 *map = host->speed_map;
 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
 359
 360 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 361 {
 362         if (host->in_bus_reset) {
 363                 HPSB_VERBOSE("Including SelfID 0x%x", sid);
 364                 host->topology_map[host->selfid_count++] = sid;
 365         } else {
 366                 HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
 367                             sid, NODEID_TO_BUS(host->node_id));
 368         }
 369 }
 370
 371 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 372 {
 373         if (!host->in_bus_reset)
 374                 HPSB_NOTICE("SelfID completion called outside of bus reset!");
 375
 376         host->node_id = LOCAL_BUS | phyid;
 377         host->is_root = isroot;
 378
 379         if (!check_selfids(host)) {
 380                 if (host->reset_retries++ < 20) {
 381                         /* selfid stage did not complete without error */
 382                         HPSB_NOTICE("Error in SelfID stage, resetting");
 383                         host->in_bus_reset = 0;
 384                         /* this should work from ohci1394 now... */
 385                         hpsb_reset_bus(host, LONG_RESET);
 386                         return;
 387                 } else {
 388                         HPSB_NOTICE("Stopping out-of-control reset loop");
 389                         HPSB_NOTICE("Warning - topology map and speed map will not be valid");
 390                         host->reset_retries = 0;
 391                 }
 392         } else {
 393                 host->reset_retries = 0;
 394                 build_speed_map(host, host->node_count);
 395         }
 396
 397         HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
 398                      "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
 399
 400         /* irm_id is kept up to date by check_selfids() */
 401         if (host->irm_id == host->node_id) {
 402                 host->is_irm = 1;
 403         } else {
 404                 host->is_busmgr = 0;
 405                 host->is_irm = 0;
 406         }
 407
 408         if (isroot) {
 409                 host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
 410                 host->is_cycmst = 1;
 411         }
 412         atomic_inc(&host->generation);
 413         host->in_bus_reset = 0;
 414         highlevel_host_reset(host);
 415 }
 416
 417
 418 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 419                       int ackcode)
 420 {
 421         unsigned long flags;
 422
 423         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 424
 425         packet->ack_code = ackcode;
 426
 427         if (packet->no_waiter || packet->state == hpsb_complete) {
 428                 /* if packet->no_waiter, must not have a tlabel allocated */
 429                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 430                 hpsb_free_packet(packet);
 431                 return;
 432         }
 433
 434         atomic_dec(&packet->refcnt);    /* drop HC's reference */
 435         /* here the packet must be on the host->pending_packet_queue */
 436
 437         if (ackcode != ACK_PENDING || !packet->expect_response) {
 438                 packet->state = hpsb_complete;
 439                 __skb_unlink(packet->skb, &host->pending_packet_queue);
 440                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 441                 queue_packet_complete(packet);
 442                 return;
 443         }
 444
 445         packet->state = hpsb_pending;
 446         packet->sendtime = jiffies;
 447
 448         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 449
 450         mod_timer(&host->timeout, jiffies + host->timeout_interval);
 451 }
 452
 453 /**
 454  * hpsb_send_phy_config - transmit a PHY configuration packet on the bus
 455  * @host: host that PHY config packet gets sent through
 456  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
 457  * @gapcnt: gap count value to set (-1 = don't set gap count)
 458  *
 459  * This function sends a PHY config packet on the bus through the specified host.
 460  *
 461  * Return value: 0 for success or error number otherwise.
 462  */
 463 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 464 {
 465         struct hpsb_packet *packet;
 466         quadlet_t d = 0;
 467         int retval = 0;
 468
 469         if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
 470            (rootid == -1 && gapcnt == -1)) {
 471                 HPSB_DEBUG("Invalid Parameter: rootid = %d   gapcnt = %d",
 472                            rootid, gapcnt);
 473                 return -EINVAL;
 474         }
 475
 476         if (rootid != -1)
 477                 d |= PHYPACKET_PHYCONFIG_R | rootid << PHYPACKET_PORT_SHIFT;
 478         if (gapcnt != -1)
 479                 d |= PHYPACKET_PHYCONFIG_T | gapcnt << PHYPACKET_GAPCOUNT_SHIFT;
 480
 481         packet = hpsb_make_phypacket(host, d);
 482         if (!packet)
 483                 return -ENOMEM;
 484
 485         packet->generation = get_hpsb_generation(host);
 486         retval = hpsb_send_packet_and_wait(packet);
 487         hpsb_free_packet(packet);
 488
 489         return retval;
 490 }
 491
 492 /**
 493  * hpsb_send_packet - transmit a packet on the bus
 494  * @packet: packet to send
 495  *
 496  * The packet is sent through the host specified in the packet->host field.
 497  * Before sending, the packet's transmit speed is automatically determined
 498  * using the local speed map when it is an async, non-broadcast packet.
 499  *
 500  * Possibilities for failure are that host is either not initialized, in bus
 501  * reset, the packet's generation number doesn't match the current generation
 502  * number or the host reports a transmit error.
 503  *
 504  * Return value: 0 on success, negative errno on failure.
 505  */
 506 int hpsb_send_packet(struct hpsb_packet *packet)
 507 {
 508         struct hpsb_host *host = packet->host;
 509
 510         if (host->is_shutdown)
 511                 return -EINVAL;
 512         if (host->in_bus_reset ||
 513             (packet->generation != get_hpsb_generation(host)))
 514                 return -EAGAIN;
 515
 516         packet->state = hpsb_queued;
 517
 518         /* This just seems silly to me */
 519         WARN_ON(packet->no_waiter && packet->expect_response);
 520
 521         if (!packet->no_waiter || packet->expect_response) {
 522                 atomic_inc(&packet->refcnt);
 523                 /* Set the initial "sendtime" to 10 seconds from now, to
 524                    prevent premature expiry.  If a packet takes more than
 525                    10 seconds to hit the wire, we have bigger problems :) */
 526                 packet->sendtime = jiffies + 10 * HZ;
 527                 skb_queue_tail(&host->pending_packet_queue, packet->skb);
 528         }
 529
 530         if (packet->node_id == host->node_id) {
 531                 /* it is a local request, so handle it locally */
 532
 533                 quadlet_t *data;
 534                 size_t size = packet->data_size + packet->header_size;
 535
 536                 data = kmalloc(size, GFP_ATOMIC);
 537                 if (!data) {
 538                         HPSB_ERR("unable to allocate memory for concatenating header and data");
 539                         return -ENOMEM;
 540                 }
 541
 542                 memcpy(data, packet->header, packet->header_size);
 543
 544                 if (packet->data_size)
 545                         memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size);
 546
 547                 dump_packet("send packet local", packet->header, packet->header_size, -1);
 548
 549                 hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
 550                 hpsb_packet_received(host, data, size, 0);
 551
 552                 kfree(data);
 553
 554                 return 0;
 555         }
 556
 557         if (packet->type == hpsb_async && packet->node_id != ALL_NODES) {
 558                 packet->speed_code =
 559                         host->speed_map[NODEID_TO_NODE(host->node_id) * 64
 560                                        + NODEID_TO_NODE(packet->node_id)];
 561         }
 562
 563         dump_packet("send packet", packet->header, packet->header_size, packet->speed_code);
 564
 565         return host->driver->transmit_packet(host, packet);
 566 }
 567
 568 /* We could just use complete() directly as the packet complete
 569  * callback, but this is more typesafe, in the sense that we get a
 570  * compiler error if the prototype for complete() changes. */
 571
 572 static void complete_packet(void *data)
 573 {
 574         complete((struct completion *) data);
 575 }
 576
 577 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 578 {
 579         struct completion done;
 580         int retval;
 581
 582         init_completion(&done);
 583         hpsb_set_packet_complete_task(packet, complete_packet, &done);
 584         retval = hpsb_send_packet(packet);
 585         if (retval == 0)
 586                 wait_for_completion(&done);
 587
 588         return retval;
 589 }
 590
 591 static void send_packet_nocare(struct hpsb_packet *packet)
 592 {
 593         if (hpsb_send_packet(packet) < 0) {
 594                 hpsb_free_packet(packet);
 595         }
 596 }
 597
 598
 599 static void handle_packet_response(struct hpsb_host *host, int tcode,
 600                                    quadlet_t *data, size_t size)
 601 {
 602         struct hpsb_packet *packet = NULL;
 603         struct sk_buff *skb;
 604         int tcode_match = 0;
 605         int tlabel;
 606         unsigned long flags;
 607
 608         tlabel = (data[0] >> 10) & 0x3f;
 609
 610         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 611
 612         skb_queue_walk(&host->pending_packet_queue, skb) {
 613                 packet = (struct hpsb_packet *)skb->data;
 614                 if ((packet->tlabel == tlabel)
 615                     && (packet->node_id == (data[1] >> 16))){
 616                         break;
 617                 }
 618
 619                 packet = NULL;
 620         }
 621
 622         if (packet == NULL) {
 623                 HPSB_DEBUG("unsolicited response packet received - no tlabel match");
 624                 dump_packet("contents", data, 16, -1);
 625                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 626                 return;
 627         }
 628
 629         switch (packet->tcode) {
 630         case TCODE_WRITEQ:
 631         case TCODE_WRITEB:
 632                 if (tcode != TCODE_WRITE_RESPONSE)
 633                         break;
 634                 tcode_match = 1;
 635                 memcpy(packet->header, data, 12);
 636                 break;
 637         case TCODE_READQ:
 638                 if (tcode != TCODE_READQ_RESPONSE)
 639                         break;
 640                 tcode_match = 1;
 641                 memcpy(packet->header, data, 16);
 642                 break;
 643         case TCODE_READB:
 644                 if (tcode != TCODE_READB_RESPONSE)
 645                         break;
 646                 tcode_match = 1;
 647                 BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
 648                 memcpy(packet->header, data, 16);
 649                 memcpy(packet->data, data + 4, size - 16);
 650                 break;
 651         case TCODE_LOCK_REQUEST:
 652                 if (tcode != TCODE_LOCK_RESPONSE)
 653                         break;
 654                 tcode_match = 1;
 655                 size = min((size - 16), (size_t)8);
 656                 BUG_ON(packet->skb->len - sizeof(*packet) < size);
 657                 memcpy(packet->header, data, 16);
 658                 memcpy(packet->data, data + 4, size);
 659                 break;
 660         }
 661
 662         if (!tcode_match) {
 663                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 664                 HPSB_INFO("unsolicited response packet received - tcode mismatch");
 665                 dump_packet("contents", data, 16, -1);
 666                 return;
 667         }
 668
 669         __skb_unlink(skb, &host->pending_packet_queue);
 670
 671         if (packet->state == hpsb_queued) {
 672                 packet->sendtime = jiffies;
 673                 packet->ack_code = ACK_PENDING;
 674         }
 675
 676         packet->state = hpsb_complete;
 677         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 678
 679         queue_packet_complete(packet);
 680 }
 681
 682
 683 static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 684                                                quadlet_t *data, size_t dsize)
 685 {
 686         struct hpsb_packet *p;
 687
 688         p = hpsb_alloc_packet(dsize);
 689         if (unlikely(p == NULL)) {
 690                 /* FIXME - send data_error response */
 691                 return NULL;
 692         }
 693
 694         p->type = hpsb_async;
 695         p->state = hpsb_unused;
 696         p->host = host;
 697         p->node_id = data[1] >> 16;
 698         p->tlabel = (data[0] >> 10) & 0x3f;
 699         p->no_waiter = 1;
 700
 701         p->generation = get_hpsb_generation(host);
 702
 703         if (dsize % 4)
 704                 p->data[dsize / 4] = 0;
 705
 706         return p;
 707 }
 708
 709 #define PREP_ASYNC_HEAD_RCODE(tc) \
 710         packet->tcode = tc; \
 711         packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \
 712                 | (1 << 8) | (tc << 4); \
 713         packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \
 714         packet->header[2] = 0
 715
 716 static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
 717                               quadlet_t data)
 718 {
 719         PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
 720         packet->header[3] = data;
 721         packet->header_size = 16;
 722         packet->data_size = 0;
 723 }
 724
 725 static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 726                                int length)
 727 {
 728         if (rcode != RCODE_COMPLETE)
 729                 length = 0;
 730
 731         PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE);
 732         packet->header[3] = length << 16;
 733         packet->header_size = 16;
 734         packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0);
 735 }
 736
 737 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 738 {
 739         PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
 740         packet->header[2] = 0;
 741         packet->header_size = 12;
 742         packet->data_size = 0;
 743 }
 744
 745 static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
 746                           int length)
 747 {
 748         if (rcode != RCODE_COMPLETE)
 749                 length = 0;
 750
 751         PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE);
 752         packet->header[3] = (length << 16) | extcode;
 753         packet->header_size = 16;
 754         packet->data_size = length;
 755 }
 756
 757 #define PREP_REPLY_PACKET(length) \
 758                 packet = create_reply_packet(host, data, length); \
 759                 if (packet == NULL) break
 760
 761 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 762                                    quadlet_t *data, size_t size, int write_acked)
 763 {
 764         struct hpsb_packet *packet;
 765         int length, rcode, extcode;
 766         quadlet_t buffer;
 767         nodeid_t source = data[1] >> 16;
 768         nodeid_t dest = data[0] >> 16;
 769         u16 flags = (u16) data[0];
 770         u64 addr;
 771
 772         /* big FIXME - no error checking is done for an out of bounds length */
 773
 774         switch (tcode) {
 775         case TCODE_WRITEQ:
 776                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 777                 rcode = highlevel_write(host, source, dest, data+3,
 778                                         addr, 4, flags);
 779
 780                 if (!write_acked
 781                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 782                     && (rcode >= 0)) {
 783                         /* not a broadcast write, reply */
 784                         PREP_REPLY_PACKET(0);
 785                         fill_async_write_resp(packet, rcode);
 786                         send_packet_nocare(packet);
 787                 }
 788                 break;
 789
 790         case TCODE_WRITEB:
 791                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 792                 rcode = highlevel_write(host, source, dest, data+4,
 793                                         addr, data[3]>>16, flags);
 794
 795                 if (!write_acked
 796                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 797                     && (rcode >= 0)) {
 798                         /* not a broadcast write, reply */
 799                         PREP_REPLY_PACKET(0);
 800                         fill_async_write_resp(packet, rcode);
 801                         send_packet_nocare(packet);
 802                 }
 803                 break;
 804
 805         case TCODE_READQ:
 806                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 807                 rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
 808
 809                 if (rcode >= 0) {
 810                         PREP_REPLY_PACKET(0);
 811                         fill_async_readquad_resp(packet, rcode, buffer);
 812                         send_packet_nocare(packet);
 813                 }
 814                 break;
 815
 816         case TCODE_READB:
 817                 length = data[3] >> 16;
 818                 PREP_REPLY_PACKET(length);
 819
 820                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 821                 rcode = highlevel_read(host, source, packet->data, addr,
 822                                        length, flags);
 823
 824                 if (rcode >= 0) {
 825                         fill_async_readblock_resp(packet, rcode, length);
 826                         send_packet_nocare(packet);
 827                 } else {
 828                         hpsb_free_packet(packet);
 829                 }
 830                 break;
 831
 832         case TCODE_LOCK_REQUEST:
 833                 length = data[3] >> 16;
 834                 extcode = data[3] & 0xffff;
 835                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 836
 837                 PREP_REPLY_PACKET(8);
 838
 839                 if ((extcode == 0) || (extcode >= 7)) {
 840                         /* let switch default handle error */
 841                         length = 0;
 842                 }
 843
 844                 switch (length) {
 845                 case 4:
 846                         rcode = highlevel_lock(host, source, packet->data, addr,
 847                                                data[4], 0, extcode,flags);
 848                         fill_async_lock_resp(packet, rcode, extcode, 4);
 849                         break;
 850                 case 8:
 851                         if ((extcode != EXTCODE_FETCH_ADD)
 852                             && (extcode != EXTCODE_LITTLE_ADD)) {
 853                                 rcode = highlevel_lock(host, source,
 854                                                        packet->data, addr,
 855                                                        data[5], data[4],
 856                                                        extcode, flags);
 857                                 fill_async_lock_resp(packet, rcode, extcode, 4);
 858                         } else {
 859                                 rcode = highlevel_lock64(host, source,
 860                                              (octlet_t *)packet->data, addr,
 861                                              *(octlet_t *)(data + 4), 0ULL,
 862                                              extcode, flags);
 863                                 fill_async_lock_resp(packet, rcode, extcode, 8);
 864                         }
 865                         break;
 866                 case 16:
 867                         rcode = highlevel_lock64(host, source,
 868                                                  (octlet_t *)packet->data, addr,
 869                                                  *(octlet_t *)(data + 6),
 870                                                  *(octlet_t *)(data + 4),
 871                                                  extcode, flags);
 872                         fill_async_lock_resp(packet, rcode, extcode, 8);
 873                         break;
 874                 default:
 875                         rcode = RCODE_TYPE_ERROR;
 876                         fill_async_lock_resp(packet, rcode,
 877                                              extcode, 0);
 878                 }
 879
 880                 if (rcode >= 0) {
 881                         send_packet_nocare(packet);
 882                 } else {
 883                         hpsb_free_packet(packet);
 884                 }
 885                 break;
 886         }
 887
 888 }
 889 #undef PREP_REPLY_PACKET
 890
 891
 892 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 893                           int write_acked)
 894 {
 895         int tcode;
 896
 897         if (host->in_bus_reset) {
 898                 HPSB_INFO("received packet during reset; ignoring");
 899                 return;
 900         }
 901
 902         dump_packet("received packet", data, size, -1);
 903
 904         tcode = (data[0] >> 4) & 0xf;
 905
 906         switch (tcode) {
 907         case TCODE_WRITE_RESPONSE:
 908         case TCODE_READQ_RESPONSE:
 909         case TCODE_READB_RESPONSE:
 910         case TCODE_LOCK_RESPONSE:
 911                 handle_packet_response(host, tcode, data, size);
 912                 break;
 913
 914         case TCODE_WRITEQ:
 915         case TCODE_WRITEB:
 916         case TCODE_READQ:
 917         case TCODE_READB:
 918         case TCODE_LOCK_REQUEST:
 919                 handle_incoming_packet(host, tcode, data, size, write_acked);
 920                 break;
 921
 922
 923         case TCODE_ISO_DATA:
 924                 highlevel_iso_receive(host, data, size);
 925                 break;
 926
 927         case TCODE_CYCLE_START:
 928                 /* simply ignore this packet if it is passed on */
 929                 break;
 930
 931         default:
 932                 HPSB_NOTICE("received packet with bogus transaction code %d",
 933                             tcode);
 934                 break;
 935         }
 936 }
 937
 938
 939 static void abort_requests(struct hpsb_host *host)
 940 {
 941         struct hpsb_packet *packet;
 942         struct sk_buff *skb;
 943
 944         host->driver->devctl(host, CANCEL_REQUESTS, 0);
 945
 946         while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) {
 947                 packet = (struct hpsb_packet *)skb->data;
 948
 949                 packet->state = hpsb_complete;
 950                 packet->ack_code = ACKX_ABORTED;
 951                 queue_packet_complete(packet);
 952         }
 953 }
 954
 955 void abort_timedouts(unsigned long __opaque)
 956 {
 957         struct hpsb_host *host = (struct hpsb_host *)__opaque;
 958         unsigned long flags;
 959         struct hpsb_packet *packet;
 960         struct sk_buff *skb;
 961         unsigned long expire;
 962
 963         spin_lock_irqsave(&host->csr.lock, flags);
 964         expire = host->csr.expire;
 965         spin_unlock_irqrestore(&host->csr.lock, flags);
 966
 967         /* Hold the lock around this, since we aren't dequeuing all
 968          * packets, just ones we need. */
 969         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 970
 971         while (!skb_queue_empty(&host->pending_packet_queue)) {
 972                 skb = skb_peek(&host->pending_packet_queue);
 973
 974                 packet = (struct hpsb_packet *)skb->data;
 975
 976                 if (time_before(packet->sendtime + expire, jiffies)) {
 977                         __skb_unlink(skb, &host->pending_packet_queue);
 978                         packet->state = hpsb_complete;
 979                         packet->ack_code = ACKX_TIMEOUT;
 980                         queue_packet_complete(packet);
 981                 } else {
 982                         /* Since packets are added to the tail, the oldest
 983                          * ones are first, always. When we get to one that
 984                          * isn't timed out, the rest aren't either. */
 985                         break;
 986                 }
 987         }
 988
 989         if (!skb_queue_empty(&host->pending_packet_queue))
 990                 mod_timer(&host->timeout, jiffies + host->timeout_interval);
 991
 992         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 993 }
 994
 995
 996 /* Kernel thread and vars, which handles packets that are completed. Only
 997  * packets that have a "complete" function are sent here. This way, the
 998  * completion is run out of kernel context, and doesn't block the rest of
 999  * the stack. */
1000 static int khpsbpkt_pid = -1, khpsbpkt_kill;
1001 static DECLARE_COMPLETION(khpsbpkt_complete);
1002 static struct sk_buff_head hpsbpkt_queue;
1003 static DECLARE_MUTEX_LOCKED(khpsbpkt_sig);
1004
1005
1006 static void queue_packet_complete(struct hpsb_packet *packet)
1007 {
1008         if (packet->no_waiter) {
1009                 hpsb_free_packet(packet);
1010                 return;
1011         }
1012         if (packet->complete_routine != NULL) {
1013                 skb_queue_tail(&hpsbpkt_queue, packet->skb);
1014
1015                 /* Signal the kernel thread to handle this */
1016                 up(&khpsbpkt_sig);
1017         }
1018         return;
1019 }
1020
1021 static int hpsbpkt_thread(void *__hi)
1022 {
1023         struct sk_buff *skb;
1024         struct hpsb_packet *packet;
1025         void (*complete_routine)(void*);
1026         void *complete_data;
1027
1028         daemonize("khpsbpkt");
1029
1030         current->flags |= PF_NOFREEZE;
1031
1032         while (1) {
1033                 if (down_interruptible(&khpsbpkt_sig)) {
1034                         printk("khpsbpkt: received unexpected signal?!\n" );
1035                         break;
1036                 }
1037
1038                 if (khpsbpkt_kill)
1039                         break;
1040
1041                 while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) {
1042                         packet = (struct hpsb_packet *)skb->data;
1043
1044                         complete_routine = packet->complete_routine;
1045                         complete_data = packet->complete_data;
1046
1047                         packet->complete_routine = packet->complete_data = NULL;
1048
1049                         complete_routine(complete_data);
1050                 }
1051         }
1052
1053         complete_and_exit(&khpsbpkt_complete, 0);
1054 }
1055
1056 static int __init ieee1394_init(void)
1057 {
1058         int i, ret;
1059
1060         skb_queue_head_init(&hpsbpkt_queue);
1061
1062         /* non-fatal error */
1063         if (hpsb_init_config_roms()) {
1064                 HPSB_ERR("Failed to initialize some config rom entries.\n");
1065                 HPSB_ERR("Some features may not be available\n");
1066         }
1067
1068         khpsbpkt_pid = kernel_thread(hpsbpkt_thread, NULL, CLONE_KERNEL);
1069         if (khpsbpkt_pid < 0) {
1070                 HPSB_ERR("Failed to start hpsbpkt thread!\n");
1071                 ret = -ENOMEM;
1072                 goto exit_cleanup_config_roms;
1073         }
1074
1075         if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
1076                 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
1077                 ret = -ENODEV;
1078                 goto exit_release_kernel_thread;
1079         }
1080
1081         /* actually this is a non-fatal error */
1082         ret = devfs_mk_dir("ieee1394");
1083         if (ret < 0) {
1084                 HPSB_ERR("unable to make devfs dir for device major %d!\n", IEEE1394_MAJOR);
1085                 goto release_chrdev;
1086         }
1087
1088         ret = bus_register(&ieee1394_bus_type);
1089         if (ret < 0) {
1090                 HPSB_INFO("bus register failed");
1091                 goto release_devfs;
1092         }
1093
1094         for (i = 0; fw_bus_attrs[i]; i++) {
1095                 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1096                 if (ret < 0) {
1097                         while (i >= 0) {
1098                                 bus_remove_file(&ieee1394_bus_type,
1099                                                 fw_bus_attrs[i--]);
1100                         }
1101                         bus_unregister(&ieee1394_bus_type);
1102                         goto release_devfs;
1103                 }
1104         }
1105
1106         ret = class_register(&hpsb_host_class);
1107         if (ret < 0)
1108                 goto release_all_bus;
1109
1110         hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol");
1111         if (IS_ERR(hpsb_protocol_class)) {
1112                 ret = PTR_ERR(hpsb_protocol_class);
1113                 goto release_class_host;
1114         }
1115
1116         ret = init_csr();
1117         if (ret) {
1118                 HPSB_INFO("init csr failed");
1119                 ret = -ENOMEM;
1120                 goto release_class_protocol;
1121         }
1122
1123         if (disable_nodemgr) {
1124                 HPSB_INFO("nodemgr and IRM functionality disabled");
1125                 /* We shouldn't contend for IRM with nodemgr disabled, since
1126                    nodemgr implements functionality required of ieee1394a-2000
1127                    IRMs */
1128                 hpsb_disable_irm = 1;
1129
1130                 return 0;
1131         }
1132
1133         if (hpsb_disable_irm) {
1134                 HPSB_INFO("IRM functionality disabled");
1135         }
1136
1137         ret = init_ieee1394_nodemgr();
1138         if (ret < 0) {
1139                 HPSB_INFO("init nodemgr failed");
1140                 goto cleanup_csr;
1141         }
1142
1143         return 0;
1144
1145 cleanup_csr:
1146         cleanup_csr();
1147 release_class_protocol:
1148         class_destroy(hpsb_protocol_class);
1149 release_class_host:
1150         class_unregister(&hpsb_host_class);
1151 release_all_bus:
1152         for (i = 0; fw_bus_attrs[i]; i++)
1153                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1154         bus_unregister(&ieee1394_bus_type);
1155 release_devfs:
1156         devfs_remove("ieee1394");
1157 release_chrdev:
1158         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1159 exit_release_kernel_thread:
1160         if (khpsbpkt_pid >= 0) {
1161                 kill_proc(khpsbpkt_pid, SIGTERM, 1);
1162                 wait_for_completion(&khpsbpkt_complete);
1163         }
1164 exit_cleanup_config_roms:
1165         hpsb_cleanup_config_roms();
1166         return ret;
1167 }
1168
1169 static void __exit ieee1394_cleanup(void)
1170 {
1171         int i;
1172
1173         if (!disable_nodemgr)
1174                 cleanup_ieee1394_nodemgr();
1175
1176         cleanup_csr();
1177
1178         class_destroy(hpsb_protocol_class);
1179         class_unregister(&hpsb_host_class);
1180         for (i = 0; fw_bus_attrs[i]; i++)
1181                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1182         bus_unregister(&ieee1394_bus_type);
1183
1184         if (khpsbpkt_pid >= 0) {
1185                 khpsbpkt_kill = 1;
1186                 mb();
1187                 up(&khpsbpkt_sig);
1188                 wait_for_completion(&khpsbpkt_complete);
1189         }
1190
1191         hpsb_cleanup_config_roms();
1192
1193         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1194         devfs_remove("ieee1394");
1195 }
1196
1197 module_init(ieee1394_init);
1198 module_exit(ieee1394_cleanup);
1199
1200 /* Exported symbols */
1201
1202 /** hosts.c **/
1203 EXPORT_SYMBOL(hpsb_alloc_host);
1204 EXPORT_SYMBOL(hpsb_add_host);
1205 EXPORT_SYMBOL(hpsb_remove_host);
1206 EXPORT_SYMBOL(hpsb_update_config_rom_image);
1207
1208 /** ieee1394_core.c **/
1209 EXPORT_SYMBOL(hpsb_speedto_str);
1210 EXPORT_SYMBOL(hpsb_protocol_class);
1211 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
1212 EXPORT_SYMBOL(hpsb_alloc_packet);
1213 EXPORT_SYMBOL(hpsb_free_packet);
1214 EXPORT_SYMBOL(hpsb_send_packet);
1215 EXPORT_SYMBOL(hpsb_reset_bus);
1216 EXPORT_SYMBOL(hpsb_bus_reset);
1217 EXPORT_SYMBOL(hpsb_selfid_received);
1218 EXPORT_SYMBOL(hpsb_selfid_complete);
1219 EXPORT_SYMBOL(hpsb_packet_sent);
1220 EXPORT_SYMBOL(hpsb_packet_received);
1221 EXPORT_SYMBOL_GPL(hpsb_disable_irm);
1222 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1223 EXPORT_SYMBOL(hpsb_send_phy_config);
1224 EXPORT_SYMBOL(hpsb_send_packet_and_wait);
1225 #endif
1226
1227 /** ieee1394_transactions.c **/
1228 EXPORT_SYMBOL(hpsb_get_tlabel);
1229 EXPORT_SYMBOL(hpsb_free_tlabel);
1230 EXPORT_SYMBOL(hpsb_make_readpacket);
1231 EXPORT_SYMBOL(hpsb_make_writepacket);
1232 EXPORT_SYMBOL(hpsb_make_streampacket);
1233 EXPORT_SYMBOL(hpsb_make_lockpacket);
1234 EXPORT_SYMBOL(hpsb_make_lock64packet);
1235 EXPORT_SYMBOL(hpsb_make_phypacket);
1236 EXPORT_SYMBOL(hpsb_make_isopacket);
1237 EXPORT_SYMBOL(hpsb_read);
1238 EXPORT_SYMBOL(hpsb_write);
1239 EXPORT_SYMBOL(hpsb_packet_success);
1240
1241 /** highlevel.c **/
1242 EXPORT_SYMBOL(hpsb_register_highlevel);
1243 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1244 EXPORT_SYMBOL(hpsb_register_addrspace);
1245 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1246 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1247 EXPORT_SYMBOL(hpsb_listen_channel);
1248 EXPORT_SYMBOL(hpsb_unlisten_channel);
1249 EXPORT_SYMBOL(hpsb_get_hostinfo);
1250 EXPORT_SYMBOL(hpsb_create_hostinfo);
1251 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1252 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1253 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1254 EXPORT_SYMBOL(hpsb_set_hostinfo);
1255 EXPORT_SYMBOL(highlevel_host_reset);
1256 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1257 EXPORT_SYMBOL(highlevel_add_host);
1258 EXPORT_SYMBOL(highlevel_remove_host);
1259 #endif
1260
1261 /** nodemgr.c **/
1262 EXPORT_SYMBOL(hpsb_node_fill_packet);
1263 EXPORT_SYMBOL(hpsb_node_write);
1264 EXPORT_SYMBOL(hpsb_register_protocol);
1265 EXPORT_SYMBOL(hpsb_unregister_protocol);
1266 EXPORT_SYMBOL(ieee1394_bus_type);
1267 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1268 EXPORT_SYMBOL(nodemgr_for_each_host);
1269 #endif
1270
1271 /** csr.c **/
1272 EXPORT_SYMBOL(hpsb_update_config_rom);
1273
1274 /** dma.c **/
1275 EXPORT_SYMBOL(dma_prog_region_init);
1276 EXPORT_SYMBOL(dma_prog_region_alloc);
1277 EXPORT_SYMBOL(dma_prog_region_free);
1278 EXPORT_SYMBOL(dma_region_init);
1279 EXPORT_SYMBOL(dma_region_alloc);
1280 EXPORT_SYMBOL(dma_region_free);
1281 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1282 EXPORT_SYMBOL(dma_region_sync_for_device);
1283 EXPORT_SYMBOL(dma_region_mmap);
1284 EXPORT_SYMBOL(dma_region_offset_to_bus);
1285
1286 /** iso.c **/
1287 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1288 EXPORT_SYMBOL(hpsb_iso_recv_init);
1289 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1290 EXPORT_SYMBOL(hpsb_iso_recv_start);
1291 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1292 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1293 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1294 EXPORT_SYMBOL(hpsb_iso_stop);
1295 EXPORT_SYMBOL(hpsb_iso_shutdown);
1296 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1297 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1298 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1299 EXPORT_SYMBOL(hpsb_iso_n_ready);
1300 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1301 EXPORT_SYMBOL(hpsb_iso_packet_received);
1302 EXPORT_SYMBOL(hpsb_iso_wake);
1303 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1304
1305 /** csr1212.c **/
1306 EXPORT_SYMBOL(csr1212_new_directory);
1307 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1308 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1309 EXPORT_SYMBOL(csr1212_release_keyval);
1310 EXPORT_SYMBOL(csr1212_read);
1311 EXPORT_SYMBOL(csr1212_parse_keyval);
1312 EXPORT_SYMBOL(_csr1212_read_keyval);
1313 EXPORT_SYMBOL(_csr1212_destroy_keyval);
1314 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1315 EXPORT_SYMBOL(csr1212_create_csr);
1316 EXPORT_SYMBOL(csr1212_init_local_csr);
1317 EXPORT_SYMBOL(csr1212_new_immediate);
1318 EXPORT_SYMBOL(csr1212_associate_keyval);
1319 EXPORT_SYMBOL(csr1212_new_string_descriptor_leaf);
1320 EXPORT_SYMBOL(csr1212_destroy_csr);
1321 EXPORT_SYMBOL(csr1212_generate_csr_image);
1322 EXPORT_SYMBOL(csr1212_parse_csr);
1323 #endif