err.no 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)
  74 {
  75         int i;
  76
  77         size /= 4;
  78         size = (size > 4 ? 4 : size);
  79
  80         printk(KERN_DEBUG "ieee1394: %s", text);
  81         for (i = 0; i < size; i++)
  82                 printk(" %08x", data[i]);
  83         printk("\n");
  84 }
  85 #else
  86 #define dump_packet(x,y,z)
  87 #endif
  88
  89 static void abort_requests(struct hpsb_host *host);
  90 static void queue_packet_complete(struct hpsb_packet *packet);
  91
  92
  93 /**
  94  * hpsb_set_packet_complete_task - set the task that runs when a packet
  95  * completes. You cannot call this more than once on a single packet
  96  * before it is sent.
  97  *
  98  * @packet: the packet whose completion we want the task added to
  99  * @routine: function to call
 100  * @data: data (if any) to pass to the above function
 101  */
 102 void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
 103                                    void (*routine)(void *), void *data)
 104 {
 105         WARN_ON(packet->complete_routine != NULL);
 106         packet->complete_routine = routine;
 107         packet->complete_data = data;
 108         return;
 109 }
 110
 111 /**
 112  * hpsb_alloc_packet - allocate new packet structure
 113  * @data_size: size of the data block to be allocated
 114  *
 115  * This function allocates, initializes and returns a new &struct hpsb_packet.
 116  * It can be used in interrupt context.  A header block is always included, its
 117  * size is big enough to contain all possible 1394 headers.  The data block is
 118  * only allocated when @data_size is not zero.
 119  *
 120  * For packets for which responses will be received the @data_size has to be big
 121  * enough to contain the response's data block since no further allocation
 122  * occurs at response matching time.
 123  *
 124  * The packet's generation value will be set to the current generation number
 125  * for ease of use.  Remember to overwrite it with your own recorded generation
 126  * number if you can not be sure that your code will not race with a bus reset.
 127  *
 128  * Return value: A pointer to a &struct hpsb_packet or NULL on allocation
 129  * failure.
 130  */
 131 struct hpsb_packet *hpsb_alloc_packet(size_t data_size)
 132 {
 133         struct hpsb_packet *packet = NULL;
 134         struct sk_buff *skb;
 135
 136         data_size = ((data_size + 3) & ~3);
 137
 138         skb = alloc_skb(data_size + sizeof(*packet), GFP_ATOMIC);
 139         if (skb == NULL)
 140                 return NULL;
 141
 142         memset(skb->data, 0, data_size + sizeof(*packet));
 143
 144         packet = (struct hpsb_packet *)skb->data;
 145         packet->skb = skb;
 146
 147         packet->header = packet->embedded_header;
 148         packet->state = hpsb_unused;
 149         packet->generation = -1;
 150         INIT_LIST_HEAD(&packet->driver_list);
 151         atomic_set(&packet->refcnt, 1);
 152
 153         if (data_size) {
 154                 packet->data = (quadlet_t *)(skb->data + sizeof(*packet));
 155                 packet->data_size = data_size;
 156         }
 157
 158         return packet;
 159 }
 160
 161
 162 /**
 163  * hpsb_free_packet - free packet and data associated with it
 164  * @packet: packet to free (is NULL safe)
 165  *
 166  * This function will free packet->data and finally the packet itself.
 167  */
 168 void hpsb_free_packet(struct hpsb_packet *packet)
 169 {
 170         if (packet && atomic_dec_and_test(&packet->refcnt)) {
 171                 BUG_ON(!list_empty(&packet->driver_list));
 172                 kfree_skb(packet->skb);
 173         }
 174 }
 175
 176
 177 int hpsb_reset_bus(struct hpsb_host *host, int type)
 178 {
 179         if (!host->in_bus_reset) {
 180                 host->driver->devctl(host, RESET_BUS, type);
 181                 return 0;
 182         } else {
 183                 return 1;
 184         }
 185 }
 186
 187
 188 int hpsb_bus_reset(struct hpsb_host *host)
 189 {
 190         if (host->in_bus_reset) {
 191                 HPSB_NOTICE("%s called while bus reset already in progress",
 192                             __FUNCTION__);
 193                 return 1;
 194         }
 195
 196         abort_requests(host);
 197         host->in_bus_reset = 1;
 198         host->irm_id = -1;
 199         host->is_irm = 0;
 200         host->busmgr_id = -1;
 201         host->is_busmgr = 0;
 202         host->is_cycmst = 0;
 203         host->node_count = 0;
 204         host->selfid_count = 0;
 205
 206         return 0;
 207 }
 208
 209
 210 /*
 211  * Verify num_of_selfids SelfIDs and return number of nodes.  Return zero in
 212  * case verification failed.
 213  */
 214 static int check_selfids(struct hpsb_host *host)
 215 {
 216         int nodeid = -1;
 217         int rest_of_selfids = host->selfid_count;
 218         struct selfid *sid = (struct selfid *)host->topology_map;
 219         struct ext_selfid *esid;
 220         int esid_seq = 23;
 221
 222         host->nodes_active = 0;
 223
 224         while (rest_of_selfids--) {
 225                 if (!sid->extended) {
 226                         nodeid++;
 227                         esid_seq = 0;
 228
 229                         if (sid->phy_id != nodeid) {
 230                                 HPSB_INFO("SelfIDs failed monotony check with "
 231                                           "%d", sid->phy_id);
 232                                 return 0;
 233                         }
 234
 235                         if (sid->link_active) {
 236                                 host->nodes_active++;
 237                                 if (sid->contender)
 238                                         host->irm_id = LOCAL_BUS | sid->phy_id;
 239                         }
 240                 } else {
 241                         esid = (struct ext_selfid *)sid;
 242
 243                         if ((esid->phy_id != nodeid)
 244                             || (esid->seq_nr != esid_seq)) {
 245                                 HPSB_INFO("SelfIDs failed monotony check with "
 246                                           "%d/%d", esid->phy_id, esid->seq_nr);
 247                                 return 0;
 248                         }
 249                         esid_seq++;
 250                 }
 251                 sid++;
 252         }
 253
 254         esid = (struct ext_selfid *)(sid - 1);
 255         while (esid->extended) {
 256                 if ((esid->porta == 0x2) || (esid->portb == 0x2)
 257                     || (esid->portc == 0x2) || (esid->portd == 0x2)
 258                     || (esid->porte == 0x2) || (esid->portf == 0x2)
 259                     || (esid->portg == 0x2) || (esid->porth == 0x2)) {
 260                         HPSB_INFO("SelfIDs failed root check on "
 261                                   "extended SelfID");
 262                         return 0;
 263                 }
 264                 esid--;
 265         }
 266
 267         sid = (struct selfid *)esid;
 268         if ((sid->port0 == 0x2) || (sid->port1 == 0x2) || (sid->port2 == 0x2)) {
 269                 HPSB_INFO("SelfIDs failed root check");
 270                 return 0;
 271         }
 272
 273         host->node_count = nodeid + 1;
 274         return 1;
 275 }
 276
 277 static void build_speed_map(struct hpsb_host *host, int nodecount)
 278 {
 279         u8 speedcap[nodecount];
 280         u8 cldcnt[nodecount];
 281         u8 *map = host->speed_map;
 282         struct selfid *sid;
 283         struct ext_selfid *esid;
 284         int i, j, n;
 285
 286         for (i = 0; i < (nodecount * 64); i += 64) {
 287                 for (j = 0; j < nodecount; j++) {
 288                         map[i+j] = IEEE1394_SPEED_MAX;
 289                 }
 290         }
 291
 292         for (i = 0; i < nodecount; i++) {
 293                 cldcnt[i] = 0;
 294         }
 295
 296         /* find direct children count and speed */
 297         for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
 298                      n = nodecount - 1;
 299              (void *)sid >= (void *)host->topology_map; sid--) {
 300                 if (sid->extended) {
 301                         esid = (struct ext_selfid *)sid;
 302
 303                         if (esid->porta == 0x3) cldcnt[n]++;
 304                         if (esid->portb == 0x3) cldcnt[n]++;
 305                         if (esid->portc == 0x3) cldcnt[n]++;
 306                         if (esid->portd == 0x3) cldcnt[n]++;
 307                         if (esid->porte == 0x3) cldcnt[n]++;
 308                         if (esid->portf == 0x3) cldcnt[n]++;
 309                         if (esid->portg == 0x3) cldcnt[n]++;
 310                         if (esid->porth == 0x3) cldcnt[n]++;
 311                 } else {
 312                         if (sid->port0 == 0x3) cldcnt[n]++;
 313                         if (sid->port1 == 0x3) cldcnt[n]++;
 314                         if (sid->port2 == 0x3) cldcnt[n]++;
 315
 316                         speedcap[n] = sid->speed;
 317                         n--;
 318                 }
 319         }
 320
 321         /* set self mapping */
 322         for (i = 0; i < nodecount; i++) {
 323                 map[64*i + i] = speedcap[i];
 324         }
 325
 326         /* fix up direct children count to total children count;
 327          * also fix up speedcaps for sibling and parent communication */
 328         for (i = 1; i < nodecount; i++) {
 329                 for (j = cldcnt[i], n = i - 1; j > 0; j--) {
 330                         cldcnt[i] += cldcnt[n];
 331                         speedcap[n] = min(speedcap[n], speedcap[i]);
 332                         n -= cldcnt[n] + 1;
 333                 }
 334         }
 335
 336         for (n = 0; n < nodecount; n++) {
 337                 for (i = n - cldcnt[n]; i <= n; i++) {
 338                         for (j = 0; j < (n - cldcnt[n]); j++) {
 339                                 map[j*64 + i] = map[i*64 + j] =
 340                                         min(map[i*64 + j], speedcap[n]);
 341                         }
 342                         for (j = n + 1; j < nodecount; j++) {
 343                                 map[j*64 + i] = map[i*64 + j] =
 344                                         min(map[i*64 + j], speedcap[n]);
 345                         }
 346                 }
 347         }
 348 }
 349
 350
 351 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 352 {
 353         if (host->in_bus_reset) {
 354                 HPSB_VERBOSE("Including SelfID 0x%x", sid);
 355                 host->topology_map[host->selfid_count++] = sid;
 356         } else {
 357                 HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
 358                             sid, NODEID_TO_BUS(host->node_id));
 359         }
 360 }
 361
 362 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 363 {
 364         if (!host->in_bus_reset)
 365                 HPSB_NOTICE("SelfID completion called outside of bus reset!");
 366
 367         host->node_id = LOCAL_BUS | phyid;
 368         host->is_root = isroot;
 369
 370         if (!check_selfids(host)) {
 371                 if (host->reset_retries++ < 20) {
 372                         /* selfid stage did not complete without error */
 373                         HPSB_NOTICE("Error in SelfID stage, resetting");
 374                         host->in_bus_reset = 0;
 375                         /* this should work from ohci1394 now... */
 376                         hpsb_reset_bus(host, LONG_RESET);
 377                         return;
 378                 } else {
 379                         HPSB_NOTICE("Stopping out-of-control reset loop");
 380                         HPSB_NOTICE("Warning - topology map and speed map will not be valid");
 381                         host->reset_retries = 0;
 382                 }
 383         } else {
 384                 host->reset_retries = 0;
 385                 build_speed_map(host, host->node_count);
 386         }
 387
 388         HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
 389                      "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
 390
 391         /* irm_id is kept up to date by check_selfids() */
 392         if (host->irm_id == host->node_id) {
 393                 host->is_irm = 1;
 394         } else {
 395                 host->is_busmgr = 0;
 396                 host->is_irm = 0;
 397         }
 398
 399         if (isroot) {
 400                 host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
 401                 host->is_cycmst = 1;
 402         }
 403         atomic_inc(&host->generation);
 404         host->in_bus_reset = 0;
 405         highlevel_host_reset(host);
 406 }
 407
 408
 409 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 410                       int ackcode)
 411 {
 412         unsigned long flags;
 413
 414         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 415
 416         packet->ack_code = ackcode;
 417
 418         if (packet->no_waiter || packet->state == hpsb_complete) {
 419                 /* if packet->no_waiter, must not have a tlabel allocated */
 420                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 421                 hpsb_free_packet(packet);
 422                 return;
 423         }
 424
 425         atomic_dec(&packet->refcnt);    /* drop HC's reference */
 426         /* here the packet must be on the host->pending_packet_queue */
 427
 428         if (ackcode != ACK_PENDING || !packet->expect_response) {
 429                 packet->state = hpsb_complete;
 430                 __skb_unlink(packet->skb, &host->pending_packet_queue);
 431                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 432                 queue_packet_complete(packet);
 433                 return;
 434         }
 435
 436         packet->state = hpsb_pending;
 437         packet->sendtime = jiffies;
 438
 439         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 440
 441         mod_timer(&host->timeout, jiffies + host->timeout_interval);
 442 }
 443
 444 /**
 445  * hpsb_send_phy_config - transmit a PHY configuration packet on the bus
 446  * @host: host that PHY config packet gets sent through
 447  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
 448  * @gapcnt: gap count value to set (-1 = don't set gap count)
 449  *
 450  * This function sends a PHY config packet on the bus through the specified host.
 451  *
 452  * Return value: 0 for success or error number otherwise.
 453  */
 454 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 455 {
 456         struct hpsb_packet *packet;
 457         int retval = 0;
 458
 459         if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
 460            (rootid == -1 && gapcnt == -1)) {
 461                 HPSB_DEBUG("Invalid Parameter: rootid = %d   gapcnt = %d",
 462                            rootid, gapcnt);
 463                 return -EINVAL;
 464         }
 465
 466         packet = hpsb_alloc_packet(0);
 467         if (!packet)
 468                 return -ENOMEM;
 469
 470         packet->host = host;
 471         packet->header_size = 8;
 472         packet->data_size = 0;
 473         packet->expect_response = 0;
 474         packet->no_waiter = 0;
 475         packet->type = hpsb_raw;
 476         packet->header[0] = 0;
 477         if (rootid != -1)
 478                 packet->header[0] |= rootid << 24 | 1 << 23;
 479         if (gapcnt != -1)
 480                 packet->header[0] |= gapcnt << 16 | 1 << 22;
 481
 482         packet->header[1] = ~packet->header[0];
 483
 484         packet->generation = get_hpsb_generation(host);
 485
 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,
 548                             packet->header_size);
 549
 550                 hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
 551                 hpsb_packet_received(host, data, size, 0);
 552
 553                 kfree(data);
 554
 555                 return 0;
 556         }
 557
 558         if (packet->type == hpsb_async && packet->node_id != ALL_NODES) {
 559                 packet->speed_code =
 560                         host->speed_map[NODEID_TO_NODE(host->node_id) * 64
 561                                        + NODEID_TO_NODE(packet->node_id)];
 562         }
 563
 564 #ifdef CONFIG_IEEE1394_VERBOSEDEBUG
 565         switch (packet->speed_code) {
 566         case 2:
 567                 dump_packet("send packet 400:", packet->header,
 568                             packet->header_size);
 569                 break;
 570         case 1:
 571                 dump_packet("send packet 200:", packet->header,
 572                             packet->header_size);
 573                 break;
 574         default:
 575                 dump_packet("send packet 100:", packet->header,
 576                             packet->header_size);
 577         }
 578 #endif
 579
 580         return host->driver->transmit_packet(host, packet);
 581 }
 582
 583 /* We could just use complete() directly as the packet complete
 584  * callback, but this is more typesafe, in the sense that we get a
 585  * compiler error if the prototype for complete() changes. */
 586
 587 static void complete_packet(void *data)
 588 {
 589         complete((struct completion *) data);
 590 }
 591
 592 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 593 {
 594         struct completion done;
 595         int retval;
 596
 597         init_completion(&done);
 598         hpsb_set_packet_complete_task(packet, complete_packet, &done);
 599         retval = hpsb_send_packet(packet);
 600         if (retval == 0)
 601                 wait_for_completion(&done);
 602
 603         return retval;
 604 }
 605
 606 static void send_packet_nocare(struct hpsb_packet *packet)
 607 {
 608         if (hpsb_send_packet(packet) < 0) {
 609                 hpsb_free_packet(packet);
 610         }
 611 }
 612
 613
 614 static void handle_packet_response(struct hpsb_host *host, int tcode,
 615                                    quadlet_t *data, size_t size)
 616 {
 617         struct hpsb_packet *packet = NULL;
 618         struct sk_buff *skb;
 619         int tcode_match = 0;
 620         int tlabel;
 621         unsigned long flags;
 622
 623         tlabel = (data[0] >> 10) & 0x3f;
 624
 625         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 626
 627         skb_queue_walk(&host->pending_packet_queue, skb) {
 628                 packet = (struct hpsb_packet *)skb->data;
 629                 if ((packet->tlabel == tlabel)
 630                     && (packet->node_id == (data[1] >> 16))){
 631                         break;
 632                 }
 633
 634                 packet = NULL;
 635         }
 636
 637         if (packet == NULL) {
 638                 HPSB_DEBUG("unsolicited response packet received - no tlabel match");
 639                 dump_packet("contents:", data, 16);
 640                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 641                 return;
 642         }
 643
 644         switch (packet->tcode) {
 645         case TCODE_WRITEQ:
 646         case TCODE_WRITEB:
 647                 if (tcode != TCODE_WRITE_RESPONSE)
 648                         break;
 649                 tcode_match = 1;
 650                 memcpy(packet->header, data, 12);
 651                 break;
 652         case TCODE_READQ:
 653                 if (tcode != TCODE_READQ_RESPONSE)
 654                         break;
 655                 tcode_match = 1;
 656                 memcpy(packet->header, data, 16);
 657                 break;
 658         case TCODE_READB:
 659                 if (tcode != TCODE_READB_RESPONSE)
 660                         break;
 661                 tcode_match = 1;
 662                 BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
 663                 memcpy(packet->header, data, 16);
 664                 memcpy(packet->data, data + 4, size - 16);
 665                 break;
 666         case TCODE_LOCK_REQUEST:
 667                 if (tcode != TCODE_LOCK_RESPONSE)
 668                         break;
 669                 tcode_match = 1;
 670                 size = min((size - 16), (size_t)8);
 671                 BUG_ON(packet->skb->len - sizeof(*packet) < size);
 672                 memcpy(packet->header, data, 16);
 673                 memcpy(packet->data, data + 4, size);
 674                 break;
 675         }
 676
 677         if (!tcode_match) {
 678                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 679                 HPSB_INFO("unsolicited response packet received - tcode mismatch");
 680                 dump_packet("contents:", data, 16);
 681                 return;
 682         }
 683
 684         __skb_unlink(skb, &host->pending_packet_queue);
 685
 686         if (packet->state == hpsb_queued) {
 687                 packet->sendtime = jiffies;
 688                 packet->ack_code = ACK_PENDING;
 689         }
 690
 691         packet->state = hpsb_complete;
 692         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 693
 694         queue_packet_complete(packet);
 695 }
 696
 697
 698 static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 699                                                quadlet_t *data, size_t dsize)
 700 {
 701         struct hpsb_packet *p;
 702
 703         p = hpsb_alloc_packet(dsize);
 704         if (unlikely(p == NULL)) {
 705                 /* FIXME - send data_error response */
 706                 return NULL;
 707         }
 708
 709         p->type = hpsb_async;
 710         p->state = hpsb_unused;
 711         p->host = host;
 712         p->node_id = data[1] >> 16;
 713         p->tlabel = (data[0] >> 10) & 0x3f;
 714         p->no_waiter = 1;
 715
 716         p->generation = get_hpsb_generation(host);
 717
 718         if (dsize % 4)
 719                 p->data[dsize / 4] = 0;
 720
 721         return p;
 722 }
 723
 724 #define PREP_ASYNC_HEAD_RCODE(tc) \
 725         packet->tcode = tc; \
 726         packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \
 727                 | (1 << 8) | (tc << 4); \
 728         packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \
 729         packet->header[2] = 0
 730
 731 static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
 732                               quadlet_t data)
 733 {
 734         PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
 735         packet->header[3] = data;
 736         packet->header_size = 16;
 737         packet->data_size = 0;
 738 }
 739
 740 static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 741                                int length)
 742 {
 743         if (rcode != RCODE_COMPLETE)
 744                 length = 0;
 745
 746         PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE);
 747         packet->header[3] = length << 16;
 748         packet->header_size = 16;
 749         packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0);
 750 }
 751
 752 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 753 {
 754         PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
 755         packet->header[2] = 0;
 756         packet->header_size = 12;
 757         packet->data_size = 0;
 758 }
 759
 760 static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
 761                           int length)
 762 {
 763         if (rcode != RCODE_COMPLETE)
 764                 length = 0;
 765
 766         PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE);
 767         packet->header[3] = (length << 16) | extcode;
 768         packet->header_size = 16;
 769         packet->data_size = length;
 770 }
 771
 772 #define PREP_REPLY_PACKET(length) \
 773                 packet = create_reply_packet(host, data, length); \
 774                 if (packet == NULL) break
 775
 776 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 777                                    quadlet_t *data, size_t size, int write_acked)
 778 {
 779         struct hpsb_packet *packet;
 780         int length, rcode, extcode;
 781         quadlet_t buffer;
 782         nodeid_t source = data[1] >> 16;
 783         nodeid_t dest = data[0] >> 16;
 784         u16 flags = (u16) data[0];
 785         u64 addr;
 786
 787         /* big FIXME - no error checking is done for an out of bounds length */
 788
 789         switch (tcode) {
 790         case TCODE_WRITEQ:
 791                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 792                 rcode = highlevel_write(host, source, dest, data+3,
 793                                         addr, 4, 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_WRITEB:
 806                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 807                 rcode = highlevel_write(host, source, dest, data+4,
 808                                         addr, data[3]>>16, flags);
 809
 810                 if (!write_acked
 811                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 812                     && (rcode >= 0)) {
 813                         /* not a broadcast write, reply */
 814                         PREP_REPLY_PACKET(0);
 815                         fill_async_write_resp(packet, rcode);
 816                         send_packet_nocare(packet);
 817                 }
 818                 break;
 819
 820         case TCODE_READQ:
 821                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 822                 rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
 823
 824                 if (rcode >= 0) {
 825                         PREP_REPLY_PACKET(0);
 826                         fill_async_readquad_resp(packet, rcode, buffer);
 827                         send_packet_nocare(packet);
 828                 }
 829                 break;
 830
 831         case TCODE_READB:
 832                 length = data[3] >> 16;
 833                 PREP_REPLY_PACKET(length);
 834
 835                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 836                 rcode = highlevel_read(host, source, packet->data, addr,
 837                                        length, flags);
 838
 839                 if (rcode >= 0) {
 840                         fill_async_readblock_resp(packet, rcode, length);
 841                         send_packet_nocare(packet);
 842                 } else {
 843                         hpsb_free_packet(packet);
 844                 }
 845                 break;
 846
 847         case TCODE_LOCK_REQUEST:
 848                 length = data[3] >> 16;
 849                 extcode = data[3] & 0xffff;
 850                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 851
 852                 PREP_REPLY_PACKET(8);
 853
 854                 if ((extcode == 0) || (extcode >= 7)) {
 855                         /* let switch default handle error */
 856                         length = 0;
 857                 }
 858
 859                 switch (length) {
 860                 case 4:
 861                         rcode = highlevel_lock(host, source, packet->data, addr,
 862                                                data[4], 0, extcode,flags);
 863                         fill_async_lock_resp(packet, rcode, extcode, 4);
 864                         break;
 865                 case 8:
 866                         if ((extcode != EXTCODE_FETCH_ADD)
 867                             && (extcode != EXTCODE_LITTLE_ADD)) {
 868                                 rcode = highlevel_lock(host, source,
 869                                                        packet->data, addr,
 870                                                        data[5], data[4],
 871                                                        extcode, flags);
 872                                 fill_async_lock_resp(packet, rcode, extcode, 4);
 873                         } else {
 874                                 rcode = highlevel_lock64(host, source,
 875                                              (octlet_t *)packet->data, addr,
 876                                              *(octlet_t *)(data + 4), 0ULL,
 877                                              extcode, flags);
 878                                 fill_async_lock_resp(packet, rcode, extcode, 8);
 879                         }
 880                         break;
 881                 case 16:
 882                         rcode = highlevel_lock64(host, source,
 883                                                  (octlet_t *)packet->data, addr,
 884                                                  *(octlet_t *)(data + 6),
 885                                                  *(octlet_t *)(data + 4),
 886                                                  extcode, flags);
 887                         fill_async_lock_resp(packet, rcode, extcode, 8);
 888                         break;
 889                 default:
 890                         rcode = RCODE_TYPE_ERROR;
 891                         fill_async_lock_resp(packet, rcode,
 892                                              extcode, 0);
 893                 }
 894
 895                 if (rcode >= 0) {
 896                         send_packet_nocare(packet);
 897                 } else {
 898                         hpsb_free_packet(packet);
 899                 }
 900                 break;
 901         }
 902
 903 }
 904 #undef PREP_REPLY_PACKET
 905
 906
 907 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 908                           int write_acked)
 909 {
 910         int tcode;
 911
 912         if (host->in_bus_reset) {
 913                 HPSB_INFO("received packet during reset; ignoring");
 914                 return;
 915         }
 916
 917         dump_packet("received packet:", data, size);
 918
 919         tcode = (data[0] >> 4) & 0xf;
 920
 921         switch (tcode) {
 922         case TCODE_WRITE_RESPONSE:
 923         case TCODE_READQ_RESPONSE:
 924         case TCODE_READB_RESPONSE:
 925         case TCODE_LOCK_RESPONSE:
 926                 handle_packet_response(host, tcode, data, size);
 927                 break;
 928
 929         case TCODE_WRITEQ:
 930         case TCODE_WRITEB:
 931         case TCODE_READQ:
 932         case TCODE_READB:
 933         case TCODE_LOCK_REQUEST:
 934                 handle_incoming_packet(host, tcode, data, size, write_acked);
 935                 break;
 936
 937
 938         case TCODE_ISO_DATA:
 939                 highlevel_iso_receive(host, data, size);
 940                 break;
 941
 942         case TCODE_CYCLE_START:
 943                 /* simply ignore this packet if it is passed on */
 944                 break;
 945
 946         default:
 947                 HPSB_NOTICE("received packet with bogus transaction code %d",
 948                             tcode);
 949                 break;
 950         }
 951 }
 952
 953
 954 static void abort_requests(struct hpsb_host *host)
 955 {
 956         struct hpsb_packet *packet;
 957         struct sk_buff *skb;
 958
 959         host->driver->devctl(host, CANCEL_REQUESTS, 0);
 960
 961         while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) {
 962                 packet = (struct hpsb_packet *)skb->data;
 963
 964                 packet->state = hpsb_complete;
 965                 packet->ack_code = ACKX_ABORTED;
 966                 queue_packet_complete(packet);
 967         }
 968 }
 969
 970 void abort_timedouts(unsigned long __opaque)
 971 {
 972         struct hpsb_host *host = (struct hpsb_host *)__opaque;
 973         unsigned long flags;
 974         struct hpsb_packet *packet;
 975         struct sk_buff *skb;
 976         unsigned long expire;
 977
 978         spin_lock_irqsave(&host->csr.lock, flags);
 979         expire = host->csr.expire;
 980         spin_unlock_irqrestore(&host->csr.lock, flags);
 981
 982         /* Hold the lock around this, since we aren't dequeuing all
 983          * packets, just ones we need. */
 984         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 985
 986         while (!skb_queue_empty(&host->pending_packet_queue)) {
 987                 skb = skb_peek(&host->pending_packet_queue);
 988
 989                 packet = (struct hpsb_packet *)skb->data;
 990
 991                 if (time_before(packet->sendtime + expire, jiffies)) {
 992                         __skb_unlink(skb, &host->pending_packet_queue);
 993                         packet->state = hpsb_complete;
 994                         packet->ack_code = ACKX_TIMEOUT;
 995                         queue_packet_complete(packet);
 996                 } else {
 997                         /* Since packets are added to the tail, the oldest
 998                          * ones are first, always. When we get to one that
 999                          * isn't timed out, the rest aren't either. */
1000                         break;
1001                 }
1002         }
1003
1004         if (!skb_queue_empty(&host->pending_packet_queue))
1005                 mod_timer(&host->timeout, jiffies + host->timeout_interval);
1006
1007         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
1008 }
1009
1010
1011 /* Kernel thread and vars, which handles packets that are completed. Only
1012  * packets that have a "complete" function are sent here. This way, the
1013  * completion is run out of kernel context, and doesn't block the rest of
1014  * the stack. */
1015 static int khpsbpkt_pid = -1, khpsbpkt_kill;
1016 static DECLARE_COMPLETION(khpsbpkt_complete);
1017 static struct sk_buff_head hpsbpkt_queue;
1018 static DECLARE_MUTEX_LOCKED(khpsbpkt_sig);
1019
1020
1021 static void queue_packet_complete(struct hpsb_packet *packet)
1022 {
1023         if (packet->no_waiter) {
1024                 hpsb_free_packet(packet);
1025                 return;
1026         }
1027         if (packet->complete_routine != NULL) {
1028                 skb_queue_tail(&hpsbpkt_queue, packet->skb);
1029
1030                 /* Signal the kernel thread to handle this */
1031                 up(&khpsbpkt_sig);
1032         }
1033         return;
1034 }
1035
1036 static int hpsbpkt_thread(void *__hi)
1037 {
1038         struct sk_buff *skb;
1039         struct hpsb_packet *packet;
1040         void (*complete_routine)(void*);
1041         void *complete_data;
1042
1043         daemonize("khpsbpkt");
1044
1045         while (1) {
1046                 if (down_interruptible(&khpsbpkt_sig)) {
1047                         if (try_to_freeze())
1048                                 continue;
1049                         printk("khpsbpkt: received unexpected signal?!\n" );
1050                         break;
1051                 }
1052
1053                 if (khpsbpkt_kill)
1054                         break;
1055
1056                 while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) {
1057                         packet = (struct hpsb_packet *)skb->data;
1058
1059                         complete_routine = packet->complete_routine;
1060                         complete_data = packet->complete_data;
1061
1062                         packet->complete_routine = packet->complete_data = NULL;
1063
1064                         complete_routine(complete_data);
1065                 }
1066         }
1067
1068         complete_and_exit(&khpsbpkt_complete, 0);
1069 }
1070
1071 static int __init ieee1394_init(void)
1072 {
1073         int i, ret;
1074
1075         skb_queue_head_init(&hpsbpkt_queue);
1076
1077         /* non-fatal error */
1078         if (hpsb_init_config_roms()) {
1079                 HPSB_ERR("Failed to initialize some config rom entries.\n");
1080                 HPSB_ERR("Some features may not be available\n");
1081         }
1082
1083         khpsbpkt_pid = kernel_thread(hpsbpkt_thread, NULL, CLONE_KERNEL);
1084         if (khpsbpkt_pid < 0) {
1085                 HPSB_ERR("Failed to start hpsbpkt thread!\n");
1086                 ret = -ENOMEM;
1087                 goto exit_cleanup_config_roms;
1088         }
1089
1090         if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
1091                 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
1092                 ret = -ENODEV;
1093                 goto exit_release_kernel_thread;
1094         }
1095
1096         /* actually this is a non-fatal error */
1097         ret = devfs_mk_dir("ieee1394");
1098         if (ret < 0) {
1099                 HPSB_ERR("unable to make devfs dir for device major %d!\n", IEEE1394_MAJOR);
1100                 goto release_chrdev;
1101         }
1102
1103         ret = bus_register(&ieee1394_bus_type);
1104         if (ret < 0) {
1105                 HPSB_INFO("bus register failed");
1106                 goto release_devfs;
1107         }
1108
1109         for (i = 0; fw_bus_attrs[i]; i++) {
1110                 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1111                 if (ret < 0) {
1112                         while (i >= 0) {
1113                                 bus_remove_file(&ieee1394_bus_type,
1114                                                 fw_bus_attrs[i--]);
1115                         }
1116                         bus_unregister(&ieee1394_bus_type);
1117                         goto release_devfs;
1118                 }
1119         }
1120
1121         ret = class_register(&hpsb_host_class);
1122         if (ret < 0)
1123                 goto release_all_bus;
1124
1125         hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol");
1126         if (IS_ERR(hpsb_protocol_class)) {
1127                 ret = PTR_ERR(hpsb_protocol_class);
1128                 goto release_class_host;
1129         }
1130
1131         ret = init_csr();
1132         if (ret) {
1133                 HPSB_INFO("init csr failed");
1134                 ret = -ENOMEM;
1135                 goto release_class_protocol;
1136         }
1137
1138         if (disable_nodemgr) {
1139                 HPSB_INFO("nodemgr and IRM functionality disabled");
1140                 /* We shouldn't contend for IRM with nodemgr disabled, since
1141                    nodemgr implements functionality required of ieee1394a-2000
1142                    IRMs */
1143                 hpsb_disable_irm = 1;
1144
1145                 return 0;
1146         }
1147
1148         if (hpsb_disable_irm) {
1149                 HPSB_INFO("IRM functionality disabled");
1150         }
1151
1152         ret = init_ieee1394_nodemgr();
1153         if (ret < 0) {
1154                 HPSB_INFO("init nodemgr failed");
1155                 goto cleanup_csr;
1156         }
1157
1158         return 0;
1159
1160 cleanup_csr:
1161         cleanup_csr();
1162 release_class_protocol:
1163         class_destroy(hpsb_protocol_class);
1164 release_class_host:
1165         class_unregister(&hpsb_host_class);
1166 release_all_bus:
1167         for (i = 0; fw_bus_attrs[i]; i++)
1168                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1169         bus_unregister(&ieee1394_bus_type);
1170 release_devfs:
1171         devfs_remove("ieee1394");
1172 release_chrdev:
1173         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1174 exit_release_kernel_thread:
1175         if (khpsbpkt_pid >= 0) {
1176                 kill_proc(khpsbpkt_pid, SIGTERM, 1);
1177                 wait_for_completion(&khpsbpkt_complete);
1178         }
1179 exit_cleanup_config_roms:
1180         hpsb_cleanup_config_roms();
1181         return ret;
1182 }
1183
1184 static void __exit ieee1394_cleanup(void)
1185 {
1186         int i;
1187
1188         if (!disable_nodemgr)
1189                 cleanup_ieee1394_nodemgr();
1190
1191         cleanup_csr();
1192
1193         class_destroy(hpsb_protocol_class);
1194         class_unregister(&hpsb_host_class);
1195         for (i = 0; fw_bus_attrs[i]; i++)
1196                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1197         bus_unregister(&ieee1394_bus_type);
1198
1199         if (khpsbpkt_pid >= 0) {
1200                 khpsbpkt_kill = 1;
1201                 mb();
1202                 up(&khpsbpkt_sig);
1203                 wait_for_completion(&khpsbpkt_complete);
1204         }
1205
1206         hpsb_cleanup_config_roms();
1207
1208         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1209         devfs_remove("ieee1394");
1210 }
1211
1212 module_init(ieee1394_init);
1213 module_exit(ieee1394_cleanup);
1214
1215 /* Exported symbols */
1216
1217 /** hosts.c **/
1218 EXPORT_SYMBOL(hpsb_alloc_host);
1219 EXPORT_SYMBOL(hpsb_add_host);
1220 EXPORT_SYMBOL(hpsb_remove_host);
1221 EXPORT_SYMBOL(hpsb_update_config_rom_image);
1222
1223 /** ieee1394_core.c **/
1224 EXPORT_SYMBOL(hpsb_speedto_str);
1225 EXPORT_SYMBOL(hpsb_protocol_class);
1226 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
1227 EXPORT_SYMBOL(hpsb_alloc_packet);
1228 EXPORT_SYMBOL(hpsb_free_packet);
1229 EXPORT_SYMBOL(hpsb_send_packet);
1230 EXPORT_SYMBOL(hpsb_reset_bus);
1231 EXPORT_SYMBOL(hpsb_bus_reset);
1232 EXPORT_SYMBOL(hpsb_selfid_received);
1233 EXPORT_SYMBOL(hpsb_selfid_complete);
1234 EXPORT_SYMBOL(hpsb_packet_sent);
1235 EXPORT_SYMBOL(hpsb_packet_received);
1236 EXPORT_SYMBOL_GPL(hpsb_disable_irm);
1237 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1238 EXPORT_SYMBOL(hpsb_send_phy_config);
1239 EXPORT_SYMBOL(hpsb_send_packet_and_wait);
1240 #endif
1241
1242 /** ieee1394_transactions.c **/
1243 EXPORT_SYMBOL(hpsb_get_tlabel);
1244 EXPORT_SYMBOL(hpsb_free_tlabel);
1245 EXPORT_SYMBOL(hpsb_make_readpacket);
1246 EXPORT_SYMBOL(hpsb_make_writepacket);
1247 EXPORT_SYMBOL(hpsb_make_streampacket);
1248 EXPORT_SYMBOL(hpsb_make_lockpacket);
1249 EXPORT_SYMBOL(hpsb_make_lock64packet);
1250 EXPORT_SYMBOL(hpsb_make_phypacket);
1251 EXPORT_SYMBOL(hpsb_make_isopacket);
1252 EXPORT_SYMBOL(hpsb_read);
1253 EXPORT_SYMBOL(hpsb_write);
1254 EXPORT_SYMBOL(hpsb_packet_success);
1255
1256 /** highlevel.c **/
1257 EXPORT_SYMBOL(hpsb_register_highlevel);
1258 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1259 EXPORT_SYMBOL(hpsb_register_addrspace);
1260 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1261 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1262 EXPORT_SYMBOL(hpsb_listen_channel);
1263 EXPORT_SYMBOL(hpsb_unlisten_channel);
1264 EXPORT_SYMBOL(hpsb_get_hostinfo);
1265 EXPORT_SYMBOL(hpsb_create_hostinfo);
1266 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1267 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1268 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1269 EXPORT_SYMBOL(hpsb_set_hostinfo);
1270 EXPORT_SYMBOL(highlevel_host_reset);
1271 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1272 EXPORT_SYMBOL(highlevel_add_host);
1273 EXPORT_SYMBOL(highlevel_remove_host);
1274 #endif
1275
1276 /** nodemgr.c **/
1277 EXPORT_SYMBOL(hpsb_node_fill_packet);
1278 EXPORT_SYMBOL(hpsb_node_write);
1279 EXPORT_SYMBOL(hpsb_register_protocol);
1280 EXPORT_SYMBOL(hpsb_unregister_protocol);
1281 EXPORT_SYMBOL(ieee1394_bus_type);
1282 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1283 EXPORT_SYMBOL(nodemgr_for_each_host);
1284 #endif
1285
1286 /** csr.c **/
1287 EXPORT_SYMBOL(hpsb_update_config_rom);
1288
1289 /** dma.c **/
1290 EXPORT_SYMBOL(dma_prog_region_init);
1291 EXPORT_SYMBOL(dma_prog_region_alloc);
1292 EXPORT_SYMBOL(dma_prog_region_free);
1293 EXPORT_SYMBOL(dma_region_init);
1294 EXPORT_SYMBOL(dma_region_alloc);
1295 EXPORT_SYMBOL(dma_region_free);
1296 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1297 EXPORT_SYMBOL(dma_region_sync_for_device);
1298 EXPORT_SYMBOL(dma_region_mmap);
1299 EXPORT_SYMBOL(dma_region_offset_to_bus);
1300
1301 /** iso.c **/
1302 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1303 EXPORT_SYMBOL(hpsb_iso_recv_init);
1304 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1305 EXPORT_SYMBOL(hpsb_iso_recv_start);
1306 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1307 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1308 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1309 EXPORT_SYMBOL(hpsb_iso_stop);
1310 EXPORT_SYMBOL(hpsb_iso_shutdown);
1311 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1312 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1313 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1314 EXPORT_SYMBOL(hpsb_iso_n_ready);
1315 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1316 EXPORT_SYMBOL(hpsb_iso_packet_received);
1317 EXPORT_SYMBOL(hpsb_iso_wake);
1318 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1319
1320 /** csr1212.c **/
1321 EXPORT_SYMBOL(csr1212_new_directory);
1322 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1323 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1324 EXPORT_SYMBOL(csr1212_release_keyval);
1325 EXPORT_SYMBOL(csr1212_read);
1326 EXPORT_SYMBOL(csr1212_parse_keyval);
1327 EXPORT_SYMBOL(_csr1212_read_keyval);
1328 EXPORT_SYMBOL(_csr1212_destroy_keyval);
1329 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1330 EXPORT_SYMBOL(csr1212_create_csr);
1331 EXPORT_SYMBOL(csr1212_init_local_csr);
1332 EXPORT_SYMBOL(csr1212_new_immediate);
1333 EXPORT_SYMBOL(csr1212_associate_keyval);
1334 EXPORT_SYMBOL(csr1212_new_string_descriptor_leaf);
1335 EXPORT_SYMBOL(csr1212_destroy_csr);
1336 EXPORT_SYMBOL(csr1212_generate_csr_image);
1337 EXPORT_SYMBOL(csr1212_parse_csr);
1338 #endif