drivers/ieee1394/ieee1394_core.c

   1 /*
   2  * IEEE 1394 for Linux
   3  *
   4  * Core support: hpsb_packet management, packet handling and forwarding to
   5  *               highlevel or lowlevel code
   6  *
   7  * Copyright (C) 1999, 2000 Andreas E. Bombe
   8  *                     2002 Manfred Weihs <weihs@ict.tuwien.ac.at>
   9  *
  10  * This code is licensed under the GPL.  See the file COPYING in the root
  11  * directory of the kernel sources for details.
  12  *
  13  *
  14  * Contributions:
  15  *
  16  * Manfred Weihs <weihs@ict.tuwien.ac.at>
  17  *        loopback functionality in hpsb_send_packet
  18  *        allow highlevel drivers to disable automatic response generation
  19  *              and to generate responses themselves (deferred)
  20  *
  21  */
  22
  23 #include <linux/kernel.h>
  24 #include <linux/list.h>
  25 #include <linux/string.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <linux/bitops.h>
  32 #include <linux/kdev_t.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/suspend.h>
  35 #include <linux/kthread.h>
  36
  37 #include <asm/byteorder.h>
  38
  39 #include "ieee1394_types.h"
  40 #include "ieee1394.h"
  41 #include "hosts.h"
  42 #include "ieee1394_core.h"
  43 #include "highlevel.h"
  44 #include "ieee1394_transactions.h"
  45 #include "csr.h"
  46 #include "nodemgr.h"
  47 #include "dma.h"
  48 #include "iso.h"
  49 #include "config_roms.h"
  50
  51 /*
  52  * Disable the nodemgr detection and config rom reading functionality.
  53  */
  54 static int disable_nodemgr;
  55 module_param(disable_nodemgr, int, 0444);
  56 MODULE_PARM_DESC(disable_nodemgr, "Disable nodemgr functionality.");
  57
  58 /* Disable Isochronous Resource Manager functionality */
  59 int hpsb_disable_irm = 0;
  60 module_param_named(disable_irm, hpsb_disable_irm, bool, 0444);
  61 MODULE_PARM_DESC(disable_irm,
  62                  "Disable Isochronous Resource Manager functionality.");
  63
  64 /* We are GPL, so treat us special */
  65 MODULE_LICENSE("GPL");
  66
  67 /* Some globals used */
  68 const char *hpsb_speedto_str[] = { "S100", "S200", "S400", "S800", "S1600", "S3200" };
  69 struct class *hpsb_protocol_class;
  70
  71 #ifdef CONFIG_IEEE1394_VERBOSEDEBUG
  72 static void dump_packet(const char *text, quadlet_t *data, int size, int speed)
  73 {
  74         int i;
  75
  76         size /= 4;
  77         size = (size > 4 ? 4 : size);
  78
  79         printk(KERN_DEBUG "ieee1394: %s", text);
  80         if (speed > -1 && speed < 6)
  81                 printk(" at %s", hpsb_speedto_str[speed]);
  82         printk(":");
  83         for (i = 0; i < size; i++)
  84                 printk(" %08x", data[i]);
  85         printk("\n");
  86 }
  87 #else
  88 #define dump_packet(a,b,c,d) do {} while (0)
  89 #endif
  90
  91 static void abort_requests(struct hpsb_host *host);
  92 static void queue_packet_complete(struct hpsb_packet *packet);
  93
  94
  95 /**
  96  * hpsb_set_packet_complete_task - set the task that runs when a packet
  97  * completes. You cannot call this more than once on a single packet
  98  * before it is sent.
  99  *
 100  * @packet: the packet whose completion we want the task added to
 101  * @routine: function to call
 102  * @data: data (if any) to pass to the above function
 103  */
 104 void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
 105                                    void (*routine)(void *), void *data)
 106 {
 107         WARN_ON(packet->complete_routine != NULL);
 108         packet->complete_routine = routine;
 109         packet->complete_data = data;
 110         return;
 111 }
 112
 113 /**
 114  * hpsb_alloc_packet - allocate new packet structure
 115  * @data_size: size of the data block to be allocated
 116  *
 117  * This function allocates, initializes and returns a new &struct hpsb_packet.
 118  * It can be used in interrupt context.  A header block is always included, its
 119  * size is big enough to contain all possible 1394 headers.  The data block is
 120  * only allocated when @data_size is not zero.
 121  *
 122  * For packets for which responses will be received the @data_size has to be big
 123  * enough to contain the response's data block since no further allocation
 124  * occurs at response matching time.
 125  *
 126  * The packet's generation value will be set to the current generation number
 127  * for ease of use.  Remember to overwrite it with your own recorded generation
 128  * number if you can not be sure that your code will not race with a bus reset.
 129  *
 130  * Return value: A pointer to a &struct hpsb_packet or NULL on allocation
 131  * failure.
 132  */
 133 struct hpsb_packet *hpsb_alloc_packet(size_t data_size)
 134 {
 135         struct hpsb_packet *packet = NULL;
 136         struct sk_buff *skb;
 137
 138         data_size = ((data_size + 3) & ~3);
 139
 140         skb = alloc_skb(data_size + sizeof(*packet), GFP_ATOMIC);
 141         if (skb == NULL)
 142                 return NULL;
 143
 144         memset(skb->data, 0, data_size + sizeof(*packet));
 145
 146         packet = (struct hpsb_packet *)skb->data;
 147         packet->skb = skb;
 148
 149         packet->header = packet->embedded_header;
 150         packet->state = hpsb_unused;
 151         packet->generation = -1;
 152         INIT_LIST_HEAD(&packet->driver_list);
 153         atomic_set(&packet->refcnt, 1);
 154
 155         if (data_size) {
 156                 packet->data = (quadlet_t *)(skb->data + sizeof(*packet));
 157                 packet->data_size = data_size;
 158         }
 159
 160         return packet;
 161 }
 162
 163
 164 /**
 165  * hpsb_free_packet - free packet and data associated with it
 166  * @packet: packet to free (is NULL safe)
 167  *
 168  * This function will free packet->data and finally the packet itself.
 169  */
 170 void hpsb_free_packet(struct hpsb_packet *packet)
 171 {
 172         if (packet && atomic_dec_and_test(&packet->refcnt)) {
 173                 BUG_ON(!list_empty(&packet->driver_list));
 174                 kfree_skb(packet->skb);
 175         }
 176 }
 177
 178
 179 int hpsb_reset_bus(struct hpsb_host *host, int type)
 180 {
 181         if (!host->in_bus_reset) {
 182                 host->driver->devctl(host, RESET_BUS, type);
 183                 return 0;
 184         } else {
 185                 return 1;
 186         }
 187 }
 188
 189
 190 int hpsb_bus_reset(struct hpsb_host *host)
 191 {
 192         if (host->in_bus_reset) {
 193                 HPSB_NOTICE("%s called while bus reset already in progress",
 194                             __FUNCTION__);
 195                 return 1;
 196         }
 197
 198         abort_requests(host);
 199         host->in_bus_reset = 1;
 200         host->irm_id = -1;
 201         host->is_irm = 0;
 202         host->busmgr_id = -1;
 203         host->is_busmgr = 0;
 204         host->is_cycmst = 0;
 205         host->node_count = 0;
 206         host->selfid_count = 0;
 207
 208         return 0;
 209 }
 210
 211
 212 /*
 213  * Verify num_of_selfids SelfIDs and return number of nodes.  Return zero in
 214  * case verification failed.
 215  */
 216 static int check_selfids(struct hpsb_host *host)
 217 {
 218         int nodeid = -1;
 219         int rest_of_selfids = host->selfid_count;
 220         struct selfid *sid = (struct selfid *)host->topology_map;
 221         struct ext_selfid *esid;
 222         int esid_seq = 23;
 223
 224         host->nodes_active = 0;
 225
 226         while (rest_of_selfids--) {
 227                 if (!sid->extended) {
 228                         nodeid++;
 229                         esid_seq = 0;
 230
 231                         if (sid->phy_id != nodeid) {
 232                                 HPSB_INFO("SelfIDs failed monotony check with "
 233                                           "%d", sid->phy_id);
 234                                 return 0;
 235                         }
 236
 237                         if (sid->link_active) {
 238                                 host->nodes_active++;
 239                                 if (sid->contender)
 240                                         host->irm_id = LOCAL_BUS | sid->phy_id;
 241                         }
 242                 } else {
 243                         esid = (struct ext_selfid *)sid;
 244
 245                         if ((esid->phy_id != nodeid)
 246                             || (esid->seq_nr != esid_seq)) {
 247                                 HPSB_INFO("SelfIDs failed monotony check with "
 248                                           "%d/%d", esid->phy_id, esid->seq_nr);
 249                                 return 0;
 250                         }
 251                         esid_seq++;
 252                 }
 253                 sid++;
 254         }
 255
 256         esid = (struct ext_selfid *)(sid - 1);
 257         while (esid->extended) {
 258                 if ((esid->porta == SELFID_PORT_PARENT) ||
 259                     (esid->portb == SELFID_PORT_PARENT) ||
 260                     (esid->portc == SELFID_PORT_PARENT) ||
 261                     (esid->portd == SELFID_PORT_PARENT) ||
 262                     (esid->porte == SELFID_PORT_PARENT) ||
 263                     (esid->portf == SELFID_PORT_PARENT) ||
 264                     (esid->portg == SELFID_PORT_PARENT) ||
 265                     (esid->porth == SELFID_PORT_PARENT)) {
 266                         HPSB_INFO("SelfIDs failed root check on "
 267                                   "extended SelfID");
 268                         return 0;
 269                 }
 270                 esid--;
 271         }
 272
 273         sid = (struct selfid *)esid;
 274         if ((sid->port0 == SELFID_PORT_PARENT) ||
 275             (sid->port1 == SELFID_PORT_PARENT) ||
 276             (sid->port2 == SELFID_PORT_PARENT)) {
 277                 HPSB_INFO("SelfIDs failed root check");
 278                 return 0;
 279         }
 280
 281         host->node_count = nodeid + 1;
 282         return 1;
 283 }
 284
 285 static void build_speed_map(struct hpsb_host *host, int nodecount)
 286 {
 287         u8 cldcnt[nodecount];
 288         u8 *map = host->speed_map;
 289         u8 *speedcap = host->speed;
 290         struct selfid *sid;
 291         struct ext_selfid *esid;
 292         int i, j, n;
 293
 294         for (i = 0; i < (nodecount * 64); i += 64) {
 295                 for (j = 0; j < nodecount; j++) {
 296                         map[i+j] = IEEE1394_SPEED_MAX;
 297                 }
 298         }
 299
 300         for (i = 0; i < nodecount; i++) {
 301                 cldcnt[i] = 0;
 302         }
 303
 304         /* find direct children count and speed */
 305         for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
 306                      n = nodecount - 1;
 307              (void *)sid >= (void *)host->topology_map; sid--) {
 308                 if (sid->extended) {
 309                         esid = (struct ext_selfid *)sid;
 310
 311                         if (esid->porta == SELFID_PORT_CHILD) cldcnt[n]++;
 312                         if (esid->portb == SELFID_PORT_CHILD) cldcnt[n]++;
 313                         if (esid->portc == SELFID_PORT_CHILD) cldcnt[n]++;
 314                         if (esid->portd == SELFID_PORT_CHILD) cldcnt[n]++;
 315                         if (esid->porte == SELFID_PORT_CHILD) cldcnt[n]++;
 316                         if (esid->portf == SELFID_PORT_CHILD) cldcnt[n]++;
 317                         if (esid->portg == SELFID_PORT_CHILD) cldcnt[n]++;
 318                         if (esid->porth == SELFID_PORT_CHILD) cldcnt[n]++;
 319                 } else {
 320                         if (sid->port0 == SELFID_PORT_CHILD) cldcnt[n]++;
 321                         if (sid->port1 == SELFID_PORT_CHILD) cldcnt[n]++;
 322                         if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++;
 323
 324                         speedcap[n] = sid->speed;
 325                         n--;
 326                 }
 327         }
 328
 329         /* set self mapping */
 330         for (i = 0; i < nodecount; i++) {
 331                 map[64*i + i] = speedcap[i];
 332         }
 333
 334         /* fix up direct children count to total children count;
 335          * also fix up speedcaps for sibling and parent communication */
 336         for (i = 1; i < nodecount; i++) {
 337                 for (j = cldcnt[i], n = i - 1; j > 0; j--) {
 338                         cldcnt[i] += cldcnt[n];
 339                         speedcap[n] = min(speedcap[n], speedcap[i]);
 340                         n -= cldcnt[n] + 1;
 341                 }
 342         }
 343
 344         for (n = 0; n < nodecount; n++) {
 345                 for (i = n - cldcnt[n]; i <= n; i++) {
 346                         for (j = 0; j < (n - cldcnt[n]); j++) {
 347                                 map[j*64 + i] = map[i*64 + j] =
 348                                         min(map[i*64 + j], speedcap[n]);
 349                         }
 350                         for (j = n + 1; j < nodecount; j++) {
 351                                 map[j*64 + i] = map[i*64 + j] =
 352                                         min(map[i*64 + j], speedcap[n]);
 353                         }
 354                 }
 355         }
 356
 357 #if SELFID_SPEED_UNKNOWN != IEEE1394_SPEED_MAX
 358         /* assume maximum speed for 1394b PHYs, nodemgr will correct it */
 359         for (n = 0; n < nodecount; n++)
 360                 if (speedcap[n] == SELFID_SPEED_UNKNOWN)
 361                         speedcap[n] = IEEE1394_SPEED_MAX;
 362 #endif
 363 }
 364
 365
 366 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 367 {
 368         if (host->in_bus_reset) {
 369                 HPSB_VERBOSE("Including SelfID 0x%x", sid);
 370                 host->topology_map[host->selfid_count++] = sid;
 371         } else {
 372                 HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
 373                             sid, NODEID_TO_BUS(host->node_id));
 374         }
 375 }
 376
 377 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 378 {
 379         if (!host->in_bus_reset)
 380                 HPSB_NOTICE("SelfID completion called outside of bus reset!");
 381
 382         host->node_id = LOCAL_BUS | phyid;
 383         host->is_root = isroot;
 384
 385         if (!check_selfids(host)) {
 386                 if (host->reset_retries++ < 20) {
 387                         /* selfid stage did not complete without error */
 388                         HPSB_NOTICE("Error in SelfID stage, resetting");
 389                         host->in_bus_reset = 0;
 390                         /* this should work from ohci1394 now... */
 391                         hpsb_reset_bus(host, LONG_RESET);
 392                         return;
 393                 } else {
 394                         HPSB_NOTICE("Stopping out-of-control reset loop");
 395                         HPSB_NOTICE("Warning - topology map and speed map will not be valid");
 396                         host->reset_retries = 0;
 397                 }
 398         } else {
 399                 host->reset_retries = 0;
 400                 build_speed_map(host, host->node_count);
 401         }
 402
 403         HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
 404                      "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
 405
 406         /* irm_id is kept up to date by check_selfids() */
 407         if (host->irm_id == host->node_id) {
 408                 host->is_irm = 1;
 409         } else {
 410                 host->is_busmgr = 0;
 411                 host->is_irm = 0;
 412         }
 413
 414         if (isroot) {
 415                 host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
 416                 host->is_cycmst = 1;
 417         }
 418         atomic_inc(&host->generation);
 419         host->in_bus_reset = 0;
 420         highlevel_host_reset(host);
 421 }
 422
 423
 424 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 425                       int ackcode)
 426 {
 427         unsigned long flags;
 428
 429         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 430
 431         packet->ack_code = ackcode;
 432
 433         if (packet->no_waiter || packet->state == hpsb_complete) {
 434                 /* if packet->no_waiter, must not have a tlabel allocated */
 435                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 436                 hpsb_free_packet(packet);
 437                 return;
 438         }
 439
 440         atomic_dec(&packet->refcnt);    /* drop HC's reference */
 441         /* here the packet must be on the host->pending_packet_queue */
 442
 443         if (ackcode != ACK_PENDING || !packet->expect_response) {
 444                 packet->state = hpsb_complete;
 445                 __skb_unlink(packet->skb, &host->pending_packet_queue);
 446                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 447                 queue_packet_complete(packet);
 448                 return;
 449         }
 450
 451         packet->state = hpsb_pending;
 452         packet->sendtime = jiffies;
 453
 454         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 455
 456         mod_timer(&host->timeout, jiffies + host->timeout_interval);
 457 }
 458
 459 /**
 460  * hpsb_send_phy_config - transmit a PHY configuration packet on the bus
 461  * @host: host that PHY config packet gets sent through
 462  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
 463  * @gapcnt: gap count value to set (-1 = don't set gap count)
 464  *
 465  * This function sends a PHY config packet on the bus through the specified host.
 466  *
 467  * Return value: 0 for success or error number otherwise.
 468  */
 469 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 470 {
 471         struct hpsb_packet *packet;
 472         quadlet_t d = 0;
 473         int retval = 0;
 474
 475         if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
 476            (rootid == -1 && gapcnt == -1)) {
 477                 HPSB_DEBUG("Invalid Parameter: rootid = %d   gapcnt = %d",
 478                            rootid, gapcnt);
 479                 return -EINVAL;
 480         }
 481
 482         if (rootid != -1)
 483                 d |= PHYPACKET_PHYCONFIG_R | rootid << PHYPACKET_PORT_SHIFT;
 484         if (gapcnt != -1)
 485                 d |= PHYPACKET_PHYCONFIG_T | gapcnt << PHYPACKET_GAPCOUNT_SHIFT;
 486
 487         packet = hpsb_make_phypacket(host, d);
 488         if (!packet)
 489                 return -ENOMEM;
 490
 491         packet->generation = get_hpsb_generation(host);
 492         retval = hpsb_send_packet_and_wait(packet);
 493         hpsb_free_packet(packet);
 494
 495         return retval;
 496 }
 497
 498 /**
 499  * hpsb_send_packet - transmit a packet on the bus
 500  * @packet: packet to send
 501  *
 502  * The packet is sent through the host specified in the packet->host field.
 503  * Before sending, the packet's transmit speed is automatically determined
 504  * using the local speed map when it is an async, non-broadcast packet.
 505  *
 506  * Possibilities for failure are that host is either not initialized, in bus
 507  * reset, the packet's generation number doesn't match the current generation
 508  * number or the host reports a transmit error.
 509  *
 510  * Return value: 0 on success, negative errno on failure.
 511  */
 512 int hpsb_send_packet(struct hpsb_packet *packet)
 513 {
 514         struct hpsb_host *host = packet->host;
 515
 516         if (host->is_shutdown)
 517                 return -EINVAL;
 518         if (host->in_bus_reset ||
 519             (packet->generation != get_hpsb_generation(host)))
 520                 return -EAGAIN;
 521
 522         packet->state = hpsb_queued;
 523
 524         /* This just seems silly to me */
 525         WARN_ON(packet->no_waiter && packet->expect_response);
 526
 527         if (!packet->no_waiter || packet->expect_response) {
 528                 atomic_inc(&packet->refcnt);
 529                 /* Set the initial "sendtime" to 10 seconds from now, to
 530                    prevent premature expiry.  If a packet takes more than
 531                    10 seconds to hit the wire, we have bigger problems :) */
 532                 packet->sendtime = jiffies + 10 * HZ;
 533                 skb_queue_tail(&host->pending_packet_queue, packet->skb);
 534         }
 535
 536         if (packet->node_id == host->node_id) {
 537                 /* it is a local request, so handle it locally */
 538
 539                 quadlet_t *data;
 540                 size_t size = packet->data_size + packet->header_size;
 541
 542                 data = kmalloc(size, GFP_ATOMIC);
 543                 if (!data) {
 544                         HPSB_ERR("unable to allocate memory for concatenating header and data");
 545                         return -ENOMEM;
 546                 }
 547
 548                 memcpy(data, packet->header, packet->header_size);
 549
 550                 if (packet->data_size)
 551                         memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size);
 552
 553                 dump_packet("send packet local", packet->header, packet->header_size, -1);
 554
 555                 hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
 556                 hpsb_packet_received(host, data, size, 0);
 557
 558                 kfree(data);
 559
 560                 return 0;
 561         }
 562
 563         if (packet->type == hpsb_async &&
 564             NODEID_TO_NODE(packet->node_id) != ALL_NODES)
 565                 packet->speed_code =
 566                         host->speed[NODEID_TO_NODE(packet->node_id)];
 567
 568         dump_packet("send packet", packet->header, packet->header_size, packet->speed_code);
 569
 570         return host->driver->transmit_packet(host, packet);
 571 }
 572
 573 /* We could just use complete() directly as the packet complete
 574  * callback, but this is more typesafe, in the sense that we get a
 575  * compiler error if the prototype for complete() changes. */
 576
 577 static void complete_packet(void *data)
 578 {
 579         complete((struct completion *) data);
 580 }
 581
 582 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 583 {
 584         struct completion done;
 585         int retval;
 586
 587         init_completion(&done);
 588         hpsb_set_packet_complete_task(packet, complete_packet, &done);
 589         retval = hpsb_send_packet(packet);
 590         if (retval == 0)
 591                 wait_for_completion(&done);
 592
 593         return retval;
 594 }
 595
 596 static void send_packet_nocare(struct hpsb_packet *packet)
 597 {
 598         if (hpsb_send_packet(packet) < 0) {
 599                 hpsb_free_packet(packet);
 600         }
 601 }
 602
 603
 604 static void handle_packet_response(struct hpsb_host *host, int tcode,
 605                                    quadlet_t *data, size_t size)
 606 {
 607         struct hpsb_packet *packet = NULL;
 608         struct sk_buff *skb;
 609         int tcode_match = 0;
 610         int tlabel;
 611         unsigned long flags;
 612
 613         tlabel = (data[0] >> 10) & 0x3f;
 614
 615         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 616
 617         skb_queue_walk(&host->pending_packet_queue, skb) {
 618                 packet = (struct hpsb_packet *)skb->data;
 619                 if ((packet->tlabel == tlabel)
 620                     && (packet->node_id == (data[1] >> 16))){
 621                         break;
 622                 }
 623
 624                 packet = NULL;
 625         }
 626
 627         if (packet == NULL) {
 628                 HPSB_DEBUG("unsolicited response packet received - no tlabel match");
 629                 dump_packet("contents", data, 16, -1);
 630                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 631                 return;
 632         }
 633
 634         switch (packet->tcode) {
 635         case TCODE_WRITEQ:
 636         case TCODE_WRITEB:
 637                 if (tcode != TCODE_WRITE_RESPONSE)
 638                         break;
 639                 tcode_match = 1;
 640                 memcpy(packet->header, data, 12);
 641                 break;
 642         case TCODE_READQ:
 643                 if (tcode != TCODE_READQ_RESPONSE)
 644                         break;
 645                 tcode_match = 1;
 646                 memcpy(packet->header, data, 16);
 647                 break;
 648         case TCODE_READB:
 649                 if (tcode != TCODE_READB_RESPONSE)
 650                         break;
 651                 tcode_match = 1;
 652                 BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
 653                 memcpy(packet->header, data, 16);
 654                 memcpy(packet->data, data + 4, size - 16);
 655                 break;
 656         case TCODE_LOCK_REQUEST:
 657                 if (tcode != TCODE_LOCK_RESPONSE)
 658                         break;
 659                 tcode_match = 1;
 660                 size = min((size - 16), (size_t)8);
 661                 BUG_ON(packet->skb->len - sizeof(*packet) < size);
 662                 memcpy(packet->header, data, 16);
 663                 memcpy(packet->data, data + 4, size);
 664                 break;
 665         }
 666
 667         if (!tcode_match) {
 668                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 669                 HPSB_INFO("unsolicited response packet received - tcode mismatch");
 670                 dump_packet("contents", data, 16, -1);
 671                 return;
 672         }
 673
 674         __skb_unlink(skb, &host->pending_packet_queue);
 675
 676         if (packet->state == hpsb_queued) {
 677                 packet->sendtime = jiffies;
 678                 packet->ack_code = ACK_PENDING;
 679         }
 680
 681         packet->state = hpsb_complete;
 682         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 683
 684         queue_packet_complete(packet);
 685 }
 686
 687
 688 static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 689                                                quadlet_t *data, size_t dsize)
 690 {
 691         struct hpsb_packet *p;
 692
 693         p = hpsb_alloc_packet(dsize);
 694         if (unlikely(p == NULL)) {
 695                 /* FIXME - send data_error response */
 696                 return NULL;
 697         }
 698
 699         p->type = hpsb_async;
 700         p->state = hpsb_unused;
 701         p->host = host;
 702         p->node_id = data[1] >> 16;
 703         p->tlabel = (data[0] >> 10) & 0x3f;
 704         p->no_waiter = 1;
 705
 706         p->generation = get_hpsb_generation(host);
 707
 708         if (dsize % 4)
 709                 p->data[dsize / 4] = 0;
 710
 711         return p;
 712 }
 713
 714 #define PREP_ASYNC_HEAD_RCODE(tc) \
 715         packet->tcode = tc; \
 716         packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \
 717                 | (1 << 8) | (tc << 4); \
 718         packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \
 719         packet->header[2] = 0
 720
 721 static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
 722                               quadlet_t data)
 723 {
 724         PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
 725         packet->header[3] = data;
 726         packet->header_size = 16;
 727         packet->data_size = 0;
 728 }
 729
 730 static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 731                                int length)
 732 {
 733         if (rcode != RCODE_COMPLETE)
 734                 length = 0;
 735
 736         PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE);
 737         packet->header[3] = length << 16;
 738         packet->header_size = 16;
 739         packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0);
 740 }
 741
 742 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 743 {
 744         PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
 745         packet->header[2] = 0;
 746         packet->header_size = 12;
 747         packet->data_size = 0;
 748 }
 749
 750 static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
 751                           int length)
 752 {
 753         if (rcode != RCODE_COMPLETE)
 754                 length = 0;
 755
 756         PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE);
 757         packet->header[3] = (length << 16) | extcode;
 758         packet->header_size = 16;
 759         packet->data_size = length;
 760 }
 761
 762 #define PREP_REPLY_PACKET(length) \
 763                 packet = create_reply_packet(host, data, length); \
 764                 if (packet == NULL) break
 765
 766 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 767                                    quadlet_t *data, size_t size, int write_acked)
 768 {
 769         struct hpsb_packet *packet;
 770         int length, rcode, extcode;
 771         quadlet_t buffer;
 772         nodeid_t source = data[1] >> 16;
 773         nodeid_t dest = data[0] >> 16;
 774         u16 flags = (u16) data[0];
 775         u64 addr;
 776
 777         /* big FIXME - no error checking is done for an out of bounds length */
 778
 779         switch (tcode) {
 780         case TCODE_WRITEQ:
 781                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 782                 rcode = highlevel_write(host, source, dest, data+3,
 783                                         addr, 4, flags);
 784
 785                 if (!write_acked
 786                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 787                     && (rcode >= 0)) {
 788                         /* not a broadcast write, reply */
 789                         PREP_REPLY_PACKET(0);
 790                         fill_async_write_resp(packet, rcode);
 791                         send_packet_nocare(packet);
 792                 }
 793                 break;
 794
 795         case TCODE_WRITEB:
 796                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 797                 rcode = highlevel_write(host, source, dest, data+4,
 798                                         addr, data[3]>>16, flags);
 799
 800                 if (!write_acked
 801                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 802                     && (rcode >= 0)) {
 803                         /* not a broadcast write, reply */
 804                         PREP_REPLY_PACKET(0);
 805                         fill_async_write_resp(packet, rcode);
 806                         send_packet_nocare(packet);
 807                 }
 808                 break;
 809
 810         case TCODE_READQ:
 811                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 812                 rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
 813
 814                 if (rcode >= 0) {
 815                         PREP_REPLY_PACKET(0);
 816                         fill_async_readquad_resp(packet, rcode, buffer);
 817                         send_packet_nocare(packet);
 818                 }
 819                 break;
 820
 821         case TCODE_READB:
 822                 length = data[3] >> 16;
 823                 PREP_REPLY_PACKET(length);
 824
 825                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 826                 rcode = highlevel_read(host, source, packet->data, addr,
 827                                        length, flags);
 828
 829                 if (rcode >= 0) {
 830                         fill_async_readblock_resp(packet, rcode, length);
 831                         send_packet_nocare(packet);
 832                 } else {
 833                         hpsb_free_packet(packet);
 834                 }
 835                 break;
 836
 837         case TCODE_LOCK_REQUEST:
 838                 length = data[3] >> 16;
 839                 extcode = data[3] & 0xffff;
 840                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 841
 842                 PREP_REPLY_PACKET(8);
 843
 844                 if ((extcode == 0) || (extcode >= 7)) {
 845                         /* let switch default handle error */
 846                         length = 0;
 847                 }
 848
 849                 switch (length) {
 850                 case 4:
 851                         rcode = highlevel_lock(host, source, packet->data, addr,
 852                                                data[4], 0, extcode,flags);
 853                         fill_async_lock_resp(packet, rcode, extcode, 4);
 854                         break;
 855                 case 8:
 856                         if ((extcode != EXTCODE_FETCH_ADD)
 857                             && (extcode != EXTCODE_LITTLE_ADD)) {
 858                                 rcode = highlevel_lock(host, source,
 859                                                        packet->data, addr,
 860                                                        data[5], data[4],
 861                                                        extcode, flags);
 862                                 fill_async_lock_resp(packet, rcode, extcode, 4);
 863                         } else {
 864                                 rcode = highlevel_lock64(host, source,
 865                                              (octlet_t *)packet->data, addr,
 866                                              *(octlet_t *)(data + 4), 0ULL,
 867                                              extcode, flags);
 868                                 fill_async_lock_resp(packet, rcode, extcode, 8);
 869                         }
 870                         break;
 871                 case 16:
 872                         rcode = highlevel_lock64(host, source,
 873                                                  (octlet_t *)packet->data, addr,
 874                                                  *(octlet_t *)(data + 6),
 875                                                  *(octlet_t *)(data + 4),
 876                                                  extcode, flags);
 877                         fill_async_lock_resp(packet, rcode, extcode, 8);
 878                         break;
 879                 default:
 880                         rcode = RCODE_TYPE_ERROR;
 881                         fill_async_lock_resp(packet, rcode,
 882                                              extcode, 0);
 883                 }
 884
 885                 if (rcode >= 0) {
 886                         send_packet_nocare(packet);
 887                 } else {
 888                         hpsb_free_packet(packet);
 889                 }
 890                 break;
 891         }
 892
 893 }
 894 #undef PREP_REPLY_PACKET
 895
 896
 897 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 898                           int write_acked)
 899 {
 900         int tcode;
 901
 902         if (host->in_bus_reset) {
 903                 HPSB_INFO("received packet during reset; ignoring");
 904                 return;
 905         }
 906
 907         dump_packet("received packet", data, size, -1);
 908
 909         tcode = (data[0] >> 4) & 0xf;
 910
 911         switch (tcode) {
 912         case TCODE_WRITE_RESPONSE:
 913         case TCODE_READQ_RESPONSE:
 914         case TCODE_READB_RESPONSE:
 915         case TCODE_LOCK_RESPONSE:
 916                 handle_packet_response(host, tcode, data, size);
 917                 break;
 918
 919         case TCODE_WRITEQ:
 920         case TCODE_WRITEB:
 921         case TCODE_READQ:
 922         case TCODE_READB:
 923         case TCODE_LOCK_REQUEST:
 924                 handle_incoming_packet(host, tcode, data, size, write_acked);
 925                 break;
 926
 927
 928         case TCODE_ISO_DATA:
 929                 highlevel_iso_receive(host, data, size);
 930                 break;
 931
 932         case TCODE_CYCLE_START:
 933                 /* simply ignore this packet if it is passed on */
 934                 break;
 935
 936         default:
 937                 HPSB_NOTICE("received packet with bogus transaction code %d",
 938                             tcode);
 939                 break;
 940         }
 941 }
 942
 943
 944 static void abort_requests(struct hpsb_host *host)
 945 {
 946         struct hpsb_packet *packet;
 947         struct sk_buff *skb;
 948
 949         host->driver->devctl(host, CANCEL_REQUESTS, 0);
 950
 951         while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) {
 952                 packet = (struct hpsb_packet *)skb->data;
 953
 954                 packet->state = hpsb_complete;
 955                 packet->ack_code = ACKX_ABORTED;
 956                 queue_packet_complete(packet);
 957         }
 958 }
 959
 960 void abort_timedouts(unsigned long __opaque)
 961 {
 962         struct hpsb_host *host = (struct hpsb_host *)__opaque;
 963         unsigned long flags;
 964         struct hpsb_packet *packet;
 965         struct sk_buff *skb;
 966         unsigned long expire;
 967
 968         spin_lock_irqsave(&host->csr.lock, flags);
 969         expire = host->csr.expire;
 970         spin_unlock_irqrestore(&host->csr.lock, flags);
 971
 972         /* Hold the lock around this, since we aren't dequeuing all
 973          * packets, just ones we need. */
 974         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 975
 976         while (!skb_queue_empty(&host->pending_packet_queue)) {
 977                 skb = skb_peek(&host->pending_packet_queue);
 978
 979                 packet = (struct hpsb_packet *)skb->data;
 980
 981                 if (time_before(packet->sendtime + expire, jiffies)) {
 982                         __skb_unlink(skb, &host->pending_packet_queue);
 983                         packet->state = hpsb_complete;
 984                         packet->ack_code = ACKX_TIMEOUT;
 985                         queue_packet_complete(packet);
 986                 } else {
 987                         /* Since packets are added to the tail, the oldest
 988                          * ones are first, always. When we get to one that
 989                          * isn't timed out, the rest aren't either. */
 990                         break;
 991                 }
 992         }
 993
 994         if (!skb_queue_empty(&host->pending_packet_queue))
 995                 mod_timer(&host->timeout, jiffies + host->timeout_interval);
 996
 997         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 998 }
 999
1000
1001 /* Kernel thread and vars, which handles packets that are completed. Only
1002  * packets that have a "complete" function are sent here. This way, the
1003  * completion is run out of kernel context, and doesn't block the rest of
1004  * the stack. */
1005 static struct task_struct *khpsbpkt_thread;
1006 static struct sk_buff_head hpsbpkt_queue;
1007
1008 static void queue_packet_complete(struct hpsb_packet *packet)
1009 {
1010         if (packet->no_waiter) {
1011                 hpsb_free_packet(packet);
1012                 return;
1013         }
1014         if (packet->complete_routine != NULL) {
1015                 skb_queue_tail(&hpsbpkt_queue, packet->skb);
1016                 wake_up_process(khpsbpkt_thread);
1017         }
1018         return;
1019 }
1020
1021 static int hpsbpkt_thread(void *__hi)
1022 {
1023         struct sk_buff *skb;
1024         struct hpsb_packet *packet;
1025         void (*complete_routine)(void*);
1026         void *complete_data;
1027
1028         current->flags |= PF_NOFREEZE;
1029
1030         while (!kthread_should_stop()) {
1031                 while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) {
1032                         packet = (struct hpsb_packet *)skb->data;
1033
1034                         complete_routine = packet->complete_routine;
1035                         complete_data = packet->complete_data;
1036
1037                         packet->complete_routine = packet->complete_data = NULL;
1038
1039                         complete_routine(complete_data);
1040                 }
1041
1042                 set_current_state(TASK_INTERRUPTIBLE);
1043                 if (!skb_peek(&hpsbpkt_queue))
1044                         schedule();
1045                 __set_current_state(TASK_RUNNING);
1046         }
1047         return 0;
1048 }
1049
1050 static int __init ieee1394_init(void)
1051 {
1052         int i, ret;
1053
1054         skb_queue_head_init(&hpsbpkt_queue);
1055
1056         /* non-fatal error */
1057         if (hpsb_init_config_roms()) {
1058                 HPSB_ERR("Failed to initialize some config rom entries.\n");
1059                 HPSB_ERR("Some features may not be available\n");
1060         }
1061
1062         khpsbpkt_thread = kthread_run(hpsbpkt_thread, NULL, "khpsbpkt");
1063         if (IS_ERR(khpsbpkt_thread)) {
1064                 HPSB_ERR("Failed to start hpsbpkt thread!\n");
1065                 ret = PTR_ERR(khpsbpkt_thread);
1066                 goto exit_cleanup_config_roms;
1067         }
1068
1069         if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
1070                 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
1071                 ret = -ENODEV;
1072                 goto exit_release_kernel_thread;
1073         }
1074
1075         ret = bus_register(&ieee1394_bus_type);
1076         if (ret < 0) {
1077                 HPSB_INFO("bus register failed");
1078                 goto release_chrdev;
1079         }
1080
1081         for (i = 0; fw_bus_attrs[i]; i++) {
1082                 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1083                 if (ret < 0) {
1084                         while (i >= 0) {
1085                                 bus_remove_file(&ieee1394_bus_type,
1086                                                 fw_bus_attrs[i--]);
1087                         }
1088                         bus_unregister(&ieee1394_bus_type);
1089                         goto release_chrdev;
1090                 }
1091         }
1092
1093         ret = class_register(&hpsb_host_class);
1094         if (ret < 0)
1095                 goto release_all_bus;
1096
1097         hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol");
1098         if (IS_ERR(hpsb_protocol_class)) {
1099                 ret = PTR_ERR(hpsb_protocol_class);
1100                 goto release_class_host;
1101         }
1102
1103         ret = init_csr();
1104         if (ret) {
1105                 HPSB_INFO("init csr failed");
1106                 ret = -ENOMEM;
1107                 goto release_class_protocol;
1108         }
1109
1110         if (disable_nodemgr) {
1111                 HPSB_INFO("nodemgr and IRM functionality disabled");
1112                 /* We shouldn't contend for IRM with nodemgr disabled, since
1113                    nodemgr implements functionality required of ieee1394a-2000
1114                    IRMs */
1115                 hpsb_disable_irm = 1;
1116
1117                 return 0;
1118         }
1119
1120         if (hpsb_disable_irm) {
1121                 HPSB_INFO("IRM functionality disabled");
1122         }
1123
1124         ret = init_ieee1394_nodemgr();
1125         if (ret < 0) {
1126                 HPSB_INFO("init nodemgr failed");
1127                 goto cleanup_csr;
1128         }
1129
1130         return 0;
1131
1132 cleanup_csr:
1133         cleanup_csr();
1134 release_class_protocol:
1135         class_destroy(hpsb_protocol_class);
1136 release_class_host:
1137         class_unregister(&hpsb_host_class);
1138 release_all_bus:
1139         for (i = 0; fw_bus_attrs[i]; i++)
1140                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1141         bus_unregister(&ieee1394_bus_type);
1142 release_chrdev:
1143         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1144 exit_release_kernel_thread:
1145         kthread_stop(khpsbpkt_thread);
1146 exit_cleanup_config_roms:
1147         hpsb_cleanup_config_roms();
1148         return ret;
1149 }
1150
1151 static void __exit ieee1394_cleanup(void)
1152 {
1153         int i;
1154
1155         if (!disable_nodemgr)
1156                 cleanup_ieee1394_nodemgr();
1157
1158         cleanup_csr();
1159
1160         class_destroy(hpsb_protocol_class);
1161         class_unregister(&hpsb_host_class);
1162         for (i = 0; fw_bus_attrs[i]; i++)
1163                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1164         bus_unregister(&ieee1394_bus_type);
1165
1166         kthread_stop(khpsbpkt_thread);
1167
1168         hpsb_cleanup_config_roms();
1169
1170         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1171 }
1172
1173 fs_initcall(ieee1394_init); /* same as ohci1394 */
1174 module_exit(ieee1394_cleanup);
1175
1176 /* Exported symbols */
1177
1178 /** hosts.c **/
1179 EXPORT_SYMBOL(hpsb_alloc_host);
1180 EXPORT_SYMBOL(hpsb_add_host);
1181 EXPORT_SYMBOL(hpsb_resume_host);
1182 EXPORT_SYMBOL(hpsb_remove_host);
1183 EXPORT_SYMBOL(hpsb_update_config_rom_image);
1184
1185 /** ieee1394_core.c **/
1186 EXPORT_SYMBOL(hpsb_speedto_str);
1187 EXPORT_SYMBOL(hpsb_protocol_class);
1188 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
1189 EXPORT_SYMBOL(hpsb_alloc_packet);
1190 EXPORT_SYMBOL(hpsb_free_packet);
1191 EXPORT_SYMBOL(hpsb_send_packet);
1192 EXPORT_SYMBOL(hpsb_reset_bus);
1193 EXPORT_SYMBOL(hpsb_bus_reset);
1194 EXPORT_SYMBOL(hpsb_selfid_received);
1195 EXPORT_SYMBOL(hpsb_selfid_complete);
1196 EXPORT_SYMBOL(hpsb_packet_sent);
1197 EXPORT_SYMBOL(hpsb_packet_received);
1198 EXPORT_SYMBOL_GPL(hpsb_disable_irm);
1199
1200 /** ieee1394_transactions.c **/
1201 EXPORT_SYMBOL(hpsb_get_tlabel);
1202 EXPORT_SYMBOL(hpsb_free_tlabel);
1203 EXPORT_SYMBOL(hpsb_make_readpacket);
1204 EXPORT_SYMBOL(hpsb_make_writepacket);
1205 EXPORT_SYMBOL(hpsb_make_streampacket);
1206 EXPORT_SYMBOL(hpsb_make_lockpacket);
1207 EXPORT_SYMBOL(hpsb_make_lock64packet);
1208 EXPORT_SYMBOL(hpsb_make_phypacket);
1209 EXPORT_SYMBOL(hpsb_make_isopacket);
1210 EXPORT_SYMBOL(hpsb_read);
1211 EXPORT_SYMBOL(hpsb_write);
1212 EXPORT_SYMBOL(hpsb_packet_success);
1213
1214 /** highlevel.c **/
1215 EXPORT_SYMBOL(hpsb_register_highlevel);
1216 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1217 EXPORT_SYMBOL(hpsb_register_addrspace);
1218 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1219 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1220 EXPORT_SYMBOL(hpsb_listen_channel);
1221 EXPORT_SYMBOL(hpsb_unlisten_channel);
1222 EXPORT_SYMBOL(hpsb_get_hostinfo);
1223 EXPORT_SYMBOL(hpsb_create_hostinfo);
1224 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1225 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1226 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1227 EXPORT_SYMBOL(hpsb_set_hostinfo);
1228 EXPORT_SYMBOL(highlevel_host_reset);
1229
1230 /** nodemgr.c **/
1231 EXPORT_SYMBOL(hpsb_node_fill_packet);
1232 EXPORT_SYMBOL(hpsb_node_write);
1233 EXPORT_SYMBOL(__hpsb_register_protocol);
1234 EXPORT_SYMBOL(hpsb_unregister_protocol);
1235
1236 /** csr.c **/
1237 EXPORT_SYMBOL(hpsb_update_config_rom);
1238
1239 /** dma.c **/
1240 EXPORT_SYMBOL(dma_prog_region_init);
1241 EXPORT_SYMBOL(dma_prog_region_alloc);
1242 EXPORT_SYMBOL(dma_prog_region_free);
1243 EXPORT_SYMBOL(dma_region_init);
1244 EXPORT_SYMBOL(dma_region_alloc);
1245 EXPORT_SYMBOL(dma_region_free);
1246 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1247 EXPORT_SYMBOL(dma_region_sync_for_device);
1248 EXPORT_SYMBOL(dma_region_mmap);
1249 EXPORT_SYMBOL(dma_region_offset_to_bus);
1250
1251 /** iso.c **/
1252 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1253 EXPORT_SYMBOL(hpsb_iso_recv_init);
1254 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1255 EXPORT_SYMBOL(hpsb_iso_recv_start);
1256 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1257 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1258 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1259 EXPORT_SYMBOL(hpsb_iso_stop);
1260 EXPORT_SYMBOL(hpsb_iso_shutdown);
1261 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1262 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1263 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1264 EXPORT_SYMBOL(hpsb_iso_n_ready);
1265 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1266 EXPORT_SYMBOL(hpsb_iso_packet_received);
1267 EXPORT_SYMBOL(hpsb_iso_wake);
1268 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1269
1270 /** csr1212.c **/
1271 EXPORT_SYMBOL(csr1212_new_directory);
1272 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1273 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1274 EXPORT_SYMBOL(csr1212_release_keyval);
1275 EXPORT_SYMBOL(csr1212_read);
1276 EXPORT_SYMBOL(csr1212_parse_keyval);
1277 EXPORT_SYMBOL(_csr1212_read_keyval);
1278 EXPORT_SYMBOL(_csr1212_destroy_keyval);