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 == 0x2) || (esid->portb == 0x2)
 260                     || (esid->portc == 0x2) || (esid->portd == 0x2)
 261                     || (esid->porte == 0x2) || (esid->portf == 0x2)
 262                     || (esid->portg == 0x2) || (esid->porth == 0x2)) {
 263                         HPSB_INFO("SelfIDs failed root check on "
 264                                   "extended SelfID");
 265                         return 0;
 266                 }
 267                 esid--;
 268         }
 269
 270         sid = (struct selfid *)esid;
 271         if ((sid->port0 == 0x2) || (sid->port1 == 0x2) || (sid->port2 == 0x2)) {
 272                 HPSB_INFO("SelfIDs failed root check");
 273                 return 0;
 274         }
 275
 276         host->node_count = nodeid + 1;
 277         return 1;
 278 }
 279
 280 static void build_speed_map(struct hpsb_host *host, int nodecount)
 281 {
 282         u8 speedcap[nodecount];
 283         u8 cldcnt[nodecount];
 284         u8 *map = host->speed_map;
 285         struct selfid *sid;
 286         struct ext_selfid *esid;
 287         int i, j, n;
 288
 289         for (i = 0; i < (nodecount * 64); i += 64) {
 290                 for (j = 0; j < nodecount; j++) {
 291                         map[i+j] = IEEE1394_SPEED_MAX;
 292                 }
 293         }
 294
 295         for (i = 0; i < nodecount; i++) {
 296                 cldcnt[i] = 0;
 297         }
 298
 299         /* find direct children count and speed */
 300         for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
 301                      n = nodecount - 1;
 302              (void *)sid >= (void *)host->topology_map; sid--) {
 303                 if (sid->extended) {
 304                         esid = (struct ext_selfid *)sid;
 305
 306                         if (esid->porta == 0x3) cldcnt[n]++;
 307                         if (esid->portb == 0x3) cldcnt[n]++;
 308                         if (esid->portc == 0x3) cldcnt[n]++;
 309                         if (esid->portd == 0x3) cldcnt[n]++;
 310                         if (esid->porte == 0x3) cldcnt[n]++;
 311                         if (esid->portf == 0x3) cldcnt[n]++;
 312                         if (esid->portg == 0x3) cldcnt[n]++;
 313                         if (esid->porth == 0x3) cldcnt[n]++;
 314                 } else {
 315                         if (sid->port0 == 0x3) cldcnt[n]++;
 316                         if (sid->port1 == 0x3) cldcnt[n]++;
 317                         if (sid->port2 == 0x3) cldcnt[n]++;
 318
 319                         speedcap[n] = sid->speed;
 320                         n--;
 321                 }
 322         }
 323
 324         /* set self mapping */
 325         for (i = 0; i < nodecount; i++) {
 326                 map[64*i + i] = speedcap[i];
 327         }
 328
 329         /* fix up direct children count to total children count;
 330          * also fix up speedcaps for sibling and parent communication */
 331         for (i = 1; i < nodecount; i++) {
 332                 for (j = cldcnt[i], n = i - 1; j > 0; j--) {
 333                         cldcnt[i] += cldcnt[n];
 334                         speedcap[n] = min(speedcap[n], speedcap[i]);
 335                         n -= cldcnt[n] + 1;
 336                 }
 337         }
 338
 339         for (n = 0; n < nodecount; n++) {
 340                 for (i = n - cldcnt[n]; i <= n; i++) {
 341                         for (j = 0; j < (n - cldcnt[n]); j++) {
 342                                 map[j*64 + i] = map[i*64 + j] =
 343                                         min(map[i*64 + j], speedcap[n]);
 344                         }
 345                         for (j = n + 1; j < nodecount; j++) {
 346                                 map[j*64 + i] = map[i*64 + j] =
 347                                         min(map[i*64 + j], speedcap[n]);
 348                         }
 349                 }
 350         }
 351 }
 352
 353
 354 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 355 {
 356         if (host->in_bus_reset) {
 357                 HPSB_VERBOSE("Including SelfID 0x%x", sid);
 358                 host->topology_map[host->selfid_count++] = sid;
 359         } else {
 360                 HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
 361                             sid, NODEID_TO_BUS(host->node_id));
 362         }
 363 }
 364
 365 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 366 {
 367         if (!host->in_bus_reset)
 368                 HPSB_NOTICE("SelfID completion called outside of bus reset!");
 369
 370         host->node_id = LOCAL_BUS | phyid;
 371         host->is_root = isroot;
 372
 373         if (!check_selfids(host)) {
 374                 if (host->reset_retries++ < 20) {
 375                         /* selfid stage did not complete without error */
 376                         HPSB_NOTICE("Error in SelfID stage, resetting");
 377                         host->in_bus_reset = 0;
 378                         /* this should work from ohci1394 now... */
 379                         hpsb_reset_bus(host, LONG_RESET);
 380                         return;
 381                 } else {
 382                         HPSB_NOTICE("Stopping out-of-control reset loop");
 383                         HPSB_NOTICE("Warning - topology map and speed map will not be valid");
 384                         host->reset_retries = 0;
 385                 }
 386         } else {
 387                 host->reset_retries = 0;
 388                 build_speed_map(host, host->node_count);
 389         }
 390
 391         HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
 392                      "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
 393
 394         /* irm_id is kept up to date by check_selfids() */
 395         if (host->irm_id == host->node_id) {
 396                 host->is_irm = 1;
 397         } else {
 398                 host->is_busmgr = 0;
 399                 host->is_irm = 0;
 400         }
 401
 402         if (isroot) {
 403                 host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
 404                 host->is_cycmst = 1;
 405         }
 406         atomic_inc(&host->generation);
 407         host->in_bus_reset = 0;
 408         highlevel_host_reset(host);
 409 }
 410
 411
 412 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 413                       int ackcode)
 414 {
 415         unsigned long flags;
 416
 417         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 418
 419         packet->ack_code = ackcode;
 420
 421         if (packet->no_waiter || packet->state == hpsb_complete) {
 422                 /* if packet->no_waiter, must not have a tlabel allocated */
 423                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 424                 hpsb_free_packet(packet);
 425                 return;
 426         }
 427
 428         atomic_dec(&packet->refcnt);    /* drop HC's reference */
 429         /* here the packet must be on the host->pending_packet_queue */
 430
 431         if (ackcode != ACK_PENDING || !packet->expect_response) {
 432                 packet->state = hpsb_complete;
 433                 __skb_unlink(packet->skb, &host->pending_packet_queue);
 434                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 435                 queue_packet_complete(packet);
 436                 return;
 437         }
 438
 439         packet->state = hpsb_pending;
 440         packet->sendtime = jiffies;
 441
 442         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 443
 444         mod_timer(&host->timeout, jiffies + host->timeout_interval);
 445 }
 446
 447 /**
 448  * hpsb_send_phy_config - transmit a PHY configuration packet on the bus
 449  * @host: host that PHY config packet gets sent through
 450  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
 451  * @gapcnt: gap count value to set (-1 = don't set gap count)
 452  *
 453  * This function sends a PHY config packet on the bus through the specified host.
 454  *
 455  * Return value: 0 for success or error number otherwise.
 456  */
 457 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 458 {
 459         struct hpsb_packet *packet;
 460         int retval = 0;
 461
 462         if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
 463            (rootid == -1 && gapcnt == -1)) {
 464                 HPSB_DEBUG("Invalid Parameter: rootid = %d   gapcnt = %d",
 465                            rootid, gapcnt);
 466                 return -EINVAL;
 467         }
 468
 469         packet = hpsb_alloc_packet(0);
 470         if (!packet)
 471                 return -ENOMEM;
 472
 473         packet->host = host;
 474         packet->header_size = 8;
 475         packet->data_size = 0;
 476         packet->expect_response = 0;
 477         packet->no_waiter = 0;
 478         packet->type = hpsb_raw;
 479         packet->header[0] = 0;
 480         if (rootid != -1)
 481                 packet->header[0] |= rootid << 24 | 1 << 23;
 482         if (gapcnt != -1)
 483                 packet->header[0] |= gapcnt << 16 | 1 << 22;
 484
 485         packet->header[1] = ~packet->header[0];
 486
 487         packet->generation = get_hpsb_generation(host);
 488
 489         retval = hpsb_send_packet_and_wait(packet);
 490         hpsb_free_packet(packet);
 491
 492         return retval;
 493 }
 494
 495 /**
 496  * hpsb_send_packet - transmit a packet on the bus
 497  * @packet: packet to send
 498  *
 499  * The packet is sent through the host specified in the packet->host field.
 500  * Before sending, the packet's transmit speed is automatically determined
 501  * using the local speed map when it is an async, non-broadcast packet.
 502  *
 503  * Possibilities for failure are that host is either not initialized, in bus
 504  * reset, the packet's generation number doesn't match the current generation
 505  * number or the host reports a transmit error.
 506  *
 507  * Return value: 0 on success, negative errno on failure.
 508  */
 509 int hpsb_send_packet(struct hpsb_packet *packet)
 510 {
 511         struct hpsb_host *host = packet->host;
 512
 513         if (host->is_shutdown)
 514                 return -EINVAL;
 515         if (host->in_bus_reset ||
 516             (packet->generation != get_hpsb_generation(host)))
 517                 return -EAGAIN;
 518
 519         packet->state = hpsb_queued;
 520
 521         /* This just seems silly to me */
 522         WARN_ON(packet->no_waiter && packet->expect_response);
 523
 524         if (!packet->no_waiter || packet->expect_response) {
 525                 atomic_inc(&packet->refcnt);
 526                 /* Set the initial "sendtime" to 10 seconds from now, to
 527                    prevent premature expiry.  If a packet takes more than
 528                    10 seconds to hit the wire, we have bigger problems :) */
 529                 packet->sendtime = jiffies + 10 * HZ;
 530                 skb_queue_tail(&host->pending_packet_queue, packet->skb);
 531         }
 532
 533         if (packet->node_id == host->node_id) {
 534                 /* it is a local request, so handle it locally */
 535
 536                 quadlet_t *data;
 537                 size_t size = packet->data_size + packet->header_size;
 538
 539                 data = kmalloc(size, GFP_ATOMIC);
 540                 if (!data) {
 541                         HPSB_ERR("unable to allocate memory for concatenating header and data");
 542                         return -ENOMEM;
 543                 }
 544
 545                 memcpy(data, packet->header, packet->header_size);
 546
 547                 if (packet->data_size)
 548                         memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size);
 549
 550                 dump_packet("send packet local", packet->header, packet->header_size, -1);
 551
 552                 hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
 553                 hpsb_packet_received(host, data, size, 0);
 554
 555                 kfree(data);
 556
 557                 return 0;
 558         }
 559
 560         if (packet->type == hpsb_async && packet->node_id != ALL_NODES) {
 561                 packet->speed_code =
 562                         host->speed_map[NODEID_TO_NODE(host->node_id) * 64
 563                                        + NODEID_TO_NODE(packet->node_id)];
 564         }
 565
 566         dump_packet("send packet", packet->header, packet->header_size, packet->speed_code);
 567
 568         return host->driver->transmit_packet(host, packet);
 569 }
 570
 571 /* We could just use complete() directly as the packet complete
 572  * callback, but this is more typesafe, in the sense that we get a
 573  * compiler error if the prototype for complete() changes. */
 574
 575 static void complete_packet(void *data)
 576 {
 577         complete((struct completion *) data);
 578 }
 579
 580 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 581 {
 582         struct completion done;
 583         int retval;
 584
 585         init_completion(&done);
 586         hpsb_set_packet_complete_task(packet, complete_packet, &done);
 587         retval = hpsb_send_packet(packet);
 588         if (retval == 0)
 589                 wait_for_completion(&done);
 590
 591         return retval;
 592 }
 593
 594 static void send_packet_nocare(struct hpsb_packet *packet)
 595 {
 596         if (hpsb_send_packet(packet) < 0) {
 597                 hpsb_free_packet(packet);
 598         }
 599 }
 600
 601
 602 static void handle_packet_response(struct hpsb_host *host, int tcode,
 603                                    quadlet_t *data, size_t size)
 604 {
 605         struct hpsb_packet *packet = NULL;
 606         struct sk_buff *skb;
 607         int tcode_match = 0;
 608         int tlabel;
 609         unsigned long flags;
 610
 611         tlabel = (data[0] >> 10) & 0x3f;
 612
 613         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 614
 615         skb_queue_walk(&host->pending_packet_queue, skb) {
 616                 packet = (struct hpsb_packet *)skb->data;
 617                 if ((packet->tlabel == tlabel)
 618                     && (packet->node_id == (data[1] >> 16))){
 619                         break;
 620                 }
 621
 622                 packet = NULL;
 623         }
 624
 625         if (packet == NULL) {
 626                 HPSB_DEBUG("unsolicited response packet received - no tlabel match");
 627                 dump_packet("contents", data, 16, -1);
 628                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 629                 return;
 630         }
 631
 632         switch (packet->tcode) {
 633         case TCODE_WRITEQ:
 634         case TCODE_WRITEB:
 635                 if (tcode != TCODE_WRITE_RESPONSE)
 636                         break;
 637                 tcode_match = 1;
 638                 memcpy(packet->header, data, 12);
 639                 break;
 640         case TCODE_READQ:
 641                 if (tcode != TCODE_READQ_RESPONSE)
 642                         break;
 643                 tcode_match = 1;
 644                 memcpy(packet->header, data, 16);
 645                 break;
 646         case TCODE_READB:
 647                 if (tcode != TCODE_READB_RESPONSE)
 648                         break;
 649                 tcode_match = 1;
 650                 BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
 651                 memcpy(packet->header, data, 16);
 652                 memcpy(packet->data, data + 4, size - 16);
 653                 break;
 654         case TCODE_LOCK_REQUEST:
 655                 if (tcode != TCODE_LOCK_RESPONSE)
 656                         break;
 657                 tcode_match = 1;
 658                 size = min((size - 16), (size_t)8);
 659                 BUG_ON(packet->skb->len - sizeof(*packet) < size);
 660                 memcpy(packet->header, data, 16);
 661                 memcpy(packet->data, data + 4, size);
 662                 break;
 663         }
 664
 665         if (!tcode_match) {
 666                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 667                 HPSB_INFO("unsolicited response packet received - tcode mismatch");
 668                 dump_packet("contents", data, 16, -1);
 669                 return;
 670         }
 671
 672         __skb_unlink(skb, &host->pending_packet_queue);
 673
 674         if (packet->state == hpsb_queued) {
 675                 packet->sendtime = jiffies;
 676                 packet->ack_code = ACK_PENDING;
 677         }
 678
 679         packet->state = hpsb_complete;
 680         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 681
 682         queue_packet_complete(packet);
 683 }
 684
 685
 686 static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 687                                                quadlet_t *data, size_t dsize)
 688 {
 689         struct hpsb_packet *p;
 690
 691         p = hpsb_alloc_packet(dsize);
 692         if (unlikely(p == NULL)) {
 693                 /* FIXME - send data_error response */
 694                 return NULL;
 695         }
 696
 697         p->type = hpsb_async;
 698         p->state = hpsb_unused;
 699         p->host = host;
 700         p->node_id = data[1] >> 16;
 701         p->tlabel = (data[0] >> 10) & 0x3f;
 702         p->no_waiter = 1;
 703
 704         p->generation = get_hpsb_generation(host);
 705
 706         if (dsize % 4)
 707                 p->data[dsize / 4] = 0;
 708
 709         return p;
 710 }
 711
 712 #define PREP_ASYNC_HEAD_RCODE(tc) \
 713         packet->tcode = tc; \
 714         packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \
 715                 | (1 << 8) | (tc << 4); \
 716         packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \
 717         packet->header[2] = 0
 718
 719 static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
 720                               quadlet_t data)
 721 {
 722         PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
 723         packet->header[3] = data;
 724         packet->header_size = 16;
 725         packet->data_size = 0;
 726 }
 727
 728 static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 729                                int length)
 730 {
 731         if (rcode != RCODE_COMPLETE)
 732                 length = 0;
 733
 734         PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE);
 735         packet->header[3] = length << 16;
 736         packet->header_size = 16;
 737         packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0);
 738 }
 739
 740 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 741 {
 742         PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
 743         packet->header[2] = 0;
 744         packet->header_size = 12;
 745         packet->data_size = 0;
 746 }
 747
 748 static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
 749                           int length)
 750 {
 751         if (rcode != RCODE_COMPLETE)
 752                 length = 0;
 753
 754         PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE);
 755         packet->header[3] = (length << 16) | extcode;
 756         packet->header_size = 16;
 757         packet->data_size = length;
 758 }
 759
 760 #define PREP_REPLY_PACKET(length) \
 761                 packet = create_reply_packet(host, data, length); \
 762                 if (packet == NULL) break
 763
 764 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 765                                    quadlet_t *data, size_t size, int write_acked)
 766 {
 767         struct hpsb_packet *packet;
 768         int length, rcode, extcode;
 769         quadlet_t buffer;
 770         nodeid_t source = data[1] >> 16;
 771         nodeid_t dest = data[0] >> 16;
 772         u16 flags = (u16) data[0];
 773         u64 addr;
 774
 775         /* big FIXME - no error checking is done for an out of bounds length */
 776
 777         switch (tcode) {
 778         case TCODE_WRITEQ:
 779                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 780                 rcode = highlevel_write(host, source, dest, data+3,
 781                                         addr, 4, flags);
 782
 783                 if (!write_acked
 784                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 785                     && (rcode >= 0)) {
 786                         /* not a broadcast write, reply */
 787                         PREP_REPLY_PACKET(0);
 788                         fill_async_write_resp(packet, rcode);
 789                         send_packet_nocare(packet);
 790                 }
 791                 break;
 792
 793         case TCODE_WRITEB:
 794                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 795                 rcode = highlevel_write(host, source, dest, data+4,
 796                                         addr, data[3]>>16, flags);
 797
 798                 if (!write_acked
 799                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 800                     && (rcode >= 0)) {
 801                         /* not a broadcast write, reply */
 802                         PREP_REPLY_PACKET(0);
 803                         fill_async_write_resp(packet, rcode);
 804                         send_packet_nocare(packet);
 805                 }
 806                 break;
 807
 808         case TCODE_READQ:
 809                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 810                 rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
 811
 812                 if (rcode >= 0) {
 813                         PREP_REPLY_PACKET(0);
 814                         fill_async_readquad_resp(packet, rcode, buffer);
 815                         send_packet_nocare(packet);
 816                 }
 817                 break;
 818
 819         case TCODE_READB:
 820                 length = data[3] >> 16;
 821                 PREP_REPLY_PACKET(length);
 822
 823                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 824                 rcode = highlevel_read(host, source, packet->data, addr,
 825                                        length, flags);
 826
 827                 if (rcode >= 0) {
 828                         fill_async_readblock_resp(packet, rcode, length);
 829                         send_packet_nocare(packet);
 830                 } else {
 831                         hpsb_free_packet(packet);
 832                 }
 833                 break;
 834
 835         case TCODE_LOCK_REQUEST:
 836                 length = data[3] >> 16;
 837                 extcode = data[3] & 0xffff;
 838                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 839
 840                 PREP_REPLY_PACKET(8);
 841
 842                 if ((extcode == 0) || (extcode >= 7)) {
 843                         /* let switch default handle error */
 844                         length = 0;
 845                 }
 846
 847                 switch (length) {
 848                 case 4:
 849                         rcode = highlevel_lock(host, source, packet->data, addr,
 850                                                data[4], 0, extcode,flags);
 851                         fill_async_lock_resp(packet, rcode, extcode, 4);
 852                         break;
 853                 case 8:
 854                         if ((extcode != EXTCODE_FETCH_ADD)
 855                             && (extcode != EXTCODE_LITTLE_ADD)) {
 856                                 rcode = highlevel_lock(host, source,
 857                                                        packet->data, addr,
 858                                                        data[5], data[4],
 859                                                        extcode, flags);
 860                                 fill_async_lock_resp(packet, rcode, extcode, 4);
 861                         } else {
 862                                 rcode = highlevel_lock64(host, source,
 863                                              (octlet_t *)packet->data, addr,
 864                                              *(octlet_t *)(data + 4), 0ULL,
 865                                              extcode, flags);
 866                                 fill_async_lock_resp(packet, rcode, extcode, 8);
 867                         }
 868                         break;
 869                 case 16:
 870                         rcode = highlevel_lock64(host, source,
 871                                                  (octlet_t *)packet->data, addr,
 872                                                  *(octlet_t *)(data + 6),
 873                                                  *(octlet_t *)(data + 4),
 874                                                  extcode, flags);
 875                         fill_async_lock_resp(packet, rcode, extcode, 8);
 876                         break;
 877                 default:
 878                         rcode = RCODE_TYPE_ERROR;
 879                         fill_async_lock_resp(packet, rcode,
 880                                              extcode, 0);
 881                 }
 882
 883                 if (rcode >= 0) {
 884                         send_packet_nocare(packet);
 885                 } else {
 886                         hpsb_free_packet(packet);
 887                 }
 888                 break;
 889         }
 890
 891 }
 892 #undef PREP_REPLY_PACKET
 893
 894
 895 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 896                           int write_acked)
 897 {
 898         int tcode;
 899
 900         if (host->in_bus_reset) {
 901                 HPSB_INFO("received packet during reset; ignoring");
 902                 return;
 903         }
 904
 905         dump_packet("received packet", data, size, -1);
 906
 907         tcode = (data[0] >> 4) & 0xf;
 908
 909         switch (tcode) {
 910         case TCODE_WRITE_RESPONSE:
 911         case TCODE_READQ_RESPONSE:
 912         case TCODE_READB_RESPONSE:
 913         case TCODE_LOCK_RESPONSE:
 914                 handle_packet_response(host, tcode, data, size);
 915                 break;
 916
 917         case TCODE_WRITEQ:
 918         case TCODE_WRITEB:
 919         case TCODE_READQ:
 920         case TCODE_READB:
 921         case TCODE_LOCK_REQUEST:
 922                 handle_incoming_packet(host, tcode, data, size, write_acked);
 923                 break;
 924
 925
 926         case TCODE_ISO_DATA:
 927                 highlevel_iso_receive(host, data, size);
 928                 break;
 929
 930         case TCODE_CYCLE_START:
 931                 /* simply ignore this packet if it is passed on */
 932                 break;
 933
 934         default:
 935                 HPSB_NOTICE("received packet with bogus transaction code %d",
 936                             tcode);
 937                 break;
 938         }
 939 }
 940
 941
 942 static void abort_requests(struct hpsb_host *host)
 943 {
 944         struct hpsb_packet *packet;
 945         struct sk_buff *skb;
 946
 947         host->driver->devctl(host, CANCEL_REQUESTS, 0);
 948
 949         while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) {
 950                 packet = (struct hpsb_packet *)skb->data;
 951
 952                 packet->state = hpsb_complete;
 953                 packet->ack_code = ACKX_ABORTED;
 954                 queue_packet_complete(packet);
 955         }
 956 }
 957
 958 void abort_timedouts(unsigned long __opaque)
 959 {
 960         struct hpsb_host *host = (struct hpsb_host *)__opaque;
 961         unsigned long flags;
 962         struct hpsb_packet *packet;
 963         struct sk_buff *skb;
 964         unsigned long expire;
 965
 966         spin_lock_irqsave(&host->csr.lock, flags);
 967         expire = host->csr.expire;
 968         spin_unlock_irqrestore(&host->csr.lock, flags);
 969
 970         /* Hold the lock around this, since we aren't dequeuing all
 971          * packets, just ones we need. */
 972         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 973
 974         while (!skb_queue_empty(&host->pending_packet_queue)) {
 975                 skb = skb_peek(&host->pending_packet_queue);
 976
 977                 packet = (struct hpsb_packet *)skb->data;
 978
 979                 if (time_before(packet->sendtime + expire, jiffies)) {
 980                         __skb_unlink(skb, &host->pending_packet_queue);
 981                         packet->state = hpsb_complete;
 982                         packet->ack_code = ACKX_TIMEOUT;
 983                         queue_packet_complete(packet);
 984                 } else {
 985                         /* Since packets are added to the tail, the oldest
 986                          * ones are first, always. When we get to one that
 987                          * isn't timed out, the rest aren't either. */
 988                         break;
 989                 }
 990         }
 991
 992         if (!skb_queue_empty(&host->pending_packet_queue))
 993                 mod_timer(&host->timeout, jiffies + host->timeout_interval);
 994
 995         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 996 }
 997
 998
 999 /* Kernel thread and vars, which handles packets that are completed. Only
1000  * packets that have a "complete" function are sent here. This way, the
1001  * completion is run out of kernel context, and doesn't block the rest of
1002  * the stack. */
1003 static int khpsbpkt_pid = -1, khpsbpkt_kill;
1004 static DECLARE_COMPLETION(khpsbpkt_complete);
1005 static struct sk_buff_head hpsbpkt_queue;
1006 static DECLARE_MUTEX_LOCKED(khpsbpkt_sig);
1007
1008
1009 static void queue_packet_complete(struct hpsb_packet *packet)
1010 {
1011         if (packet->no_waiter) {
1012                 hpsb_free_packet(packet);
1013                 return;
1014         }
1015         if (packet->complete_routine != NULL) {
1016                 skb_queue_tail(&hpsbpkt_queue, packet->skb);
1017
1018                 /* Signal the kernel thread to handle this */
1019                 up(&khpsbpkt_sig);
1020         }
1021         return;
1022 }
1023
1024 static int hpsbpkt_thread(void *__hi)
1025 {
1026         struct sk_buff *skb;
1027         struct hpsb_packet *packet;
1028         void (*complete_routine)(void*);
1029         void *complete_data;
1030
1031         daemonize("khpsbpkt");
1032
1033         while (1) {
1034                 if (down_interruptible(&khpsbpkt_sig)) {
1035                         if (try_to_freeze())
1036                                 continue;
1037                         printk("khpsbpkt: received unexpected signal?!\n" );
1038                         break;
1039                 }
1040
1041                 if (khpsbpkt_kill)
1042                         break;
1043
1044                 while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) {
1045                         packet = (struct hpsb_packet *)skb->data;
1046
1047                         complete_routine = packet->complete_routine;
1048                         complete_data = packet->complete_data;
1049
1050                         packet->complete_routine = packet->complete_data = NULL;
1051
1052                         complete_routine(complete_data);
1053                 }
1054         }
1055
1056         complete_and_exit(&khpsbpkt_complete, 0);
1057 }
1058
1059 static int __init ieee1394_init(void)
1060 {
1061         int i, ret;
1062
1063         skb_queue_head_init(&hpsbpkt_queue);
1064
1065         /* non-fatal error */
1066         if (hpsb_init_config_roms()) {
1067                 HPSB_ERR("Failed to initialize some config rom entries.\n");
1068                 HPSB_ERR("Some features may not be available\n");
1069         }
1070
1071         khpsbpkt_pid = kernel_thread(hpsbpkt_thread, NULL, CLONE_KERNEL);
1072         if (khpsbpkt_pid < 0) {
1073                 HPSB_ERR("Failed to start hpsbpkt thread!\n");
1074                 ret = -ENOMEM;
1075                 goto exit_cleanup_config_roms;
1076         }
1077
1078         if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
1079                 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
1080                 ret = -ENODEV;
1081                 goto exit_release_kernel_thread;
1082         }
1083
1084         /* actually this is a non-fatal error */
1085         ret = devfs_mk_dir("ieee1394");
1086         if (ret < 0) {
1087                 HPSB_ERR("unable to make devfs dir for device major %d!\n", IEEE1394_MAJOR);
1088                 goto release_chrdev;
1089         }
1090
1091         ret = bus_register(&ieee1394_bus_type);
1092         if (ret < 0) {
1093                 HPSB_INFO("bus register failed");
1094                 goto release_devfs;
1095         }
1096
1097         for (i = 0; fw_bus_attrs[i]; i++) {
1098                 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1099                 if (ret < 0) {
1100                         while (i >= 0) {
1101                                 bus_remove_file(&ieee1394_bus_type,
1102                                                 fw_bus_attrs[i--]);
1103                         }
1104                         bus_unregister(&ieee1394_bus_type);
1105                         goto release_devfs;
1106                 }
1107         }
1108
1109         ret = class_register(&hpsb_host_class);
1110         if (ret < 0)
1111                 goto release_all_bus;
1112
1113         hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol");
1114         if (IS_ERR(hpsb_protocol_class)) {
1115                 ret = PTR_ERR(hpsb_protocol_class);
1116                 goto release_class_host;
1117         }
1118
1119         ret = init_csr();
1120         if (ret) {
1121                 HPSB_INFO("init csr failed");
1122                 ret = -ENOMEM;
1123                 goto release_class_protocol;
1124         }
1125
1126         if (disable_nodemgr) {
1127                 HPSB_INFO("nodemgr and IRM functionality disabled");
1128                 /* We shouldn't contend for IRM with nodemgr disabled, since
1129                    nodemgr implements functionality required of ieee1394a-2000
1130                    IRMs */
1131                 hpsb_disable_irm = 1;
1132
1133                 return 0;
1134         }
1135
1136         if (hpsb_disable_irm) {
1137                 HPSB_INFO("IRM functionality disabled");
1138         }
1139
1140         ret = init_ieee1394_nodemgr();
1141         if (ret < 0) {
1142                 HPSB_INFO("init nodemgr failed");
1143                 goto cleanup_csr;
1144         }
1145
1146         return 0;
1147
1148 cleanup_csr:
1149         cleanup_csr();
1150 release_class_protocol:
1151         class_destroy(hpsb_protocol_class);
1152 release_class_host:
1153         class_unregister(&hpsb_host_class);
1154 release_all_bus:
1155         for (i = 0; fw_bus_attrs[i]; i++)
1156                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1157         bus_unregister(&ieee1394_bus_type);
1158 release_devfs:
1159         devfs_remove("ieee1394");
1160 release_chrdev:
1161         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1162 exit_release_kernel_thread:
1163         if (khpsbpkt_pid >= 0) {
1164                 kill_proc(khpsbpkt_pid, SIGTERM, 1);
1165                 wait_for_completion(&khpsbpkt_complete);
1166         }
1167 exit_cleanup_config_roms:
1168         hpsb_cleanup_config_roms();
1169         return ret;
1170 }
1171
1172 static void __exit ieee1394_cleanup(void)
1173 {
1174         int i;
1175
1176         if (!disable_nodemgr)
1177                 cleanup_ieee1394_nodemgr();
1178
1179         cleanup_csr();
1180
1181         class_destroy(hpsb_protocol_class);
1182         class_unregister(&hpsb_host_class);
1183         for (i = 0; fw_bus_attrs[i]; i++)
1184                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1185         bus_unregister(&ieee1394_bus_type);
1186
1187         if (khpsbpkt_pid >= 0) {
1188                 khpsbpkt_kill = 1;
1189                 mb();
1190                 up(&khpsbpkt_sig);
1191                 wait_for_completion(&khpsbpkt_complete);
1192         }
1193
1194         hpsb_cleanup_config_roms();
1195
1196         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1197         devfs_remove("ieee1394");
1198 }
1199
1200 module_init(ieee1394_init);
1201 module_exit(ieee1394_cleanup);
1202
1203 /* Exported symbols */
1204
1205 /** hosts.c **/
1206 EXPORT_SYMBOL(hpsb_alloc_host);
1207 EXPORT_SYMBOL(hpsb_add_host);
1208 EXPORT_SYMBOL(hpsb_remove_host);
1209 EXPORT_SYMBOL(hpsb_update_config_rom_image);
1210
1211 /** ieee1394_core.c **/
1212 EXPORT_SYMBOL(hpsb_speedto_str);
1213 EXPORT_SYMBOL(hpsb_protocol_class);
1214 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
1215 EXPORT_SYMBOL(hpsb_alloc_packet);
1216 EXPORT_SYMBOL(hpsb_free_packet);
1217 EXPORT_SYMBOL(hpsb_send_packet);
1218 EXPORT_SYMBOL(hpsb_reset_bus);
1219 EXPORT_SYMBOL(hpsb_bus_reset);
1220 EXPORT_SYMBOL(hpsb_selfid_received);
1221 EXPORT_SYMBOL(hpsb_selfid_complete);
1222 EXPORT_SYMBOL(hpsb_packet_sent);
1223 EXPORT_SYMBOL(hpsb_packet_received);
1224 EXPORT_SYMBOL_GPL(hpsb_disable_irm);
1225 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1226 EXPORT_SYMBOL(hpsb_send_phy_config);
1227 EXPORT_SYMBOL(hpsb_send_packet_and_wait);
1228 #endif
1229
1230 /** ieee1394_transactions.c **/
1231 EXPORT_SYMBOL(hpsb_get_tlabel);
1232 EXPORT_SYMBOL(hpsb_free_tlabel);
1233 EXPORT_SYMBOL(hpsb_make_readpacket);
1234 EXPORT_SYMBOL(hpsb_make_writepacket);
1235 EXPORT_SYMBOL(hpsb_make_streampacket);
1236 EXPORT_SYMBOL(hpsb_make_lockpacket);
1237 EXPORT_SYMBOL(hpsb_make_lock64packet);
1238 EXPORT_SYMBOL(hpsb_make_phypacket);
1239 EXPORT_SYMBOL(hpsb_make_isopacket);
1240 EXPORT_SYMBOL(hpsb_read);
1241 EXPORT_SYMBOL(hpsb_write);
1242 EXPORT_SYMBOL(hpsb_packet_success);
1243
1244 /** highlevel.c **/
1245 EXPORT_SYMBOL(hpsb_register_highlevel);
1246 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1247 EXPORT_SYMBOL(hpsb_register_addrspace);
1248 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1249 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1250 EXPORT_SYMBOL(hpsb_listen_channel);
1251 EXPORT_SYMBOL(hpsb_unlisten_channel);
1252 EXPORT_SYMBOL(hpsb_get_hostinfo);
1253 EXPORT_SYMBOL(hpsb_create_hostinfo);
1254 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1255 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1256 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1257 EXPORT_SYMBOL(hpsb_set_hostinfo);
1258 EXPORT_SYMBOL(highlevel_host_reset);
1259 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1260 EXPORT_SYMBOL(highlevel_add_host);
1261 EXPORT_SYMBOL(highlevel_remove_host);
1262 #endif
1263
1264 /** nodemgr.c **/
1265 EXPORT_SYMBOL(hpsb_node_fill_packet);
1266 EXPORT_SYMBOL(hpsb_node_write);
1267 EXPORT_SYMBOL(hpsb_register_protocol);
1268 EXPORT_SYMBOL(hpsb_unregister_protocol);
1269 EXPORT_SYMBOL(ieee1394_bus_type);
1270 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1271 EXPORT_SYMBOL(nodemgr_for_each_host);
1272 #endif
1273
1274 /** csr.c **/
1275 EXPORT_SYMBOL(hpsb_update_config_rom);
1276
1277 /** dma.c **/
1278 EXPORT_SYMBOL(dma_prog_region_init);
1279 EXPORT_SYMBOL(dma_prog_region_alloc);
1280 EXPORT_SYMBOL(dma_prog_region_free);
1281 EXPORT_SYMBOL(dma_region_init);
1282 EXPORT_SYMBOL(dma_region_alloc);
1283 EXPORT_SYMBOL(dma_region_free);
1284 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1285 EXPORT_SYMBOL(dma_region_sync_for_device);
1286 EXPORT_SYMBOL(dma_region_mmap);
1287 EXPORT_SYMBOL(dma_region_offset_to_bus);
1288
1289 /** iso.c **/
1290 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1291 EXPORT_SYMBOL(hpsb_iso_recv_init);
1292 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1293 EXPORT_SYMBOL(hpsb_iso_recv_start);
1294 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1295 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1296 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1297 EXPORT_SYMBOL(hpsb_iso_stop);
1298 EXPORT_SYMBOL(hpsb_iso_shutdown);
1299 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1300 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1301 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1302 EXPORT_SYMBOL(hpsb_iso_n_ready);
1303 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1304 EXPORT_SYMBOL(hpsb_iso_packet_received);
1305 EXPORT_SYMBOL(hpsb_iso_wake);
1306 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1307
1308 /** csr1212.c **/
1309 EXPORT_SYMBOL(csr1212_new_directory);
1310 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1311 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1312 EXPORT_SYMBOL(csr1212_release_keyval);
1313 EXPORT_SYMBOL(csr1212_read);
1314 EXPORT_SYMBOL(csr1212_parse_keyval);
1315 EXPORT_SYMBOL(_csr1212_read_keyval);
1316 EXPORT_SYMBOL(_csr1212_destroy_keyval);
1317 #ifdef CONFIG_IEEE1394_EXPORT_FULL_API
1318 EXPORT_SYMBOL(csr1212_create_csr);
1319 EXPORT_SYMBOL(csr1212_init_local_csr);
1320 EXPORT_SYMBOL(csr1212_new_immediate);
1321 EXPORT_SYMBOL(csr1212_associate_keyval);
1322 EXPORT_SYMBOL(csr1212_new_string_descriptor_leaf);
1323 EXPORT_SYMBOL(csr1212_destroy_csr);
1324 EXPORT_SYMBOL(csr1212_generate_csr_image);
1325 EXPORT_SYMBOL(csr1212_parse_csr);
1326 #endif