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/freezer.h>
  34 #include <linux/suspend.h>
  35 #include <linux/kthread.h>
  36 #include <linux/preempt.h>
  37 #include <linux/time.h>
  38
  39 #include <asm/system.h>
  40 #include <asm/byteorder.h>
  41
  42 #include "ieee1394_types.h"
  43 #include "ieee1394.h"
  44 #include "hosts.h"
  45 #include "ieee1394_core.h"
  46 #include "highlevel.h"
  47 #include "ieee1394_transactions.h"
  48 #include "csr.h"
  49 #include "nodemgr.h"
  50 #include "dma.h"
  51 #include "iso.h"
  52 #include "config_roms.h"
  53
  54 /*
  55  * Disable the nodemgr detection and config rom reading functionality.
  56  */
  57 static int disable_nodemgr;
  58 module_param(disable_nodemgr, int, 0444);
  59 MODULE_PARM_DESC(disable_nodemgr, "Disable nodemgr functionality.");
  60
  61 /* Disable Isochronous Resource Manager functionality */
  62 int hpsb_disable_irm = 0;
  63 module_param_named(disable_irm, hpsb_disable_irm, bool, 0444);
  64 MODULE_PARM_DESC(disable_irm,
  65                  "Disable Isochronous Resource Manager functionality.");
  66
  67 /* We are GPL, so treat us special */
  68 MODULE_LICENSE("GPL");
  69
  70 /* Some globals used */
  71 const char *hpsb_speedto_str[] = { "S100", "S200", "S400", "S800", "S1600", "S3200" };
  72 struct class *hpsb_protocol_class;
  73
  74 #ifdef CONFIG_IEEE1394_VERBOSEDEBUG
  75 static void dump_packet(const char *text, quadlet_t *data, int size, int speed)
  76 {
  77         int i;
  78
  79         size /= 4;
  80         size = (size > 4 ? 4 : size);
  81
  82         printk(KERN_DEBUG "ieee1394: %s", text);
  83         if (speed > -1 && speed < 6)
  84                 printk(" at %s", hpsb_speedto_str[speed]);
  85         printk(":");
  86         for (i = 0; i < size; i++)
  87                 printk(" %08x", data[i]);
  88         printk("\n");
  89 }
  90 #else
  91 #define dump_packet(a,b,c,d) do {} while (0)
  92 #endif
  93
  94 static void abort_requests(struct hpsb_host *host);
  95 static void queue_packet_complete(struct hpsb_packet *packet);
  96
  97
  98 /**
  99  * hpsb_set_packet_complete_task - set task that runs when a packet completes
 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  * Set the task that runs when a packet completes. You cannot call this more
 105  * than once on a single packet before it is sent.
 106  *
 107  * Typically, the complete @routine is responsible to call hpsb_free_packet().
 108  */
 109 void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
 110                                    void (*routine)(void *), void *data)
 111 {
 112         WARN_ON(packet->complete_routine != NULL);
 113         packet->complete_routine = routine;
 114         packet->complete_data = data;
 115         return;
 116 }
 117
 118 /**
 119  * hpsb_alloc_packet - allocate new packet structure
 120  * @data_size: size of the data block to be allocated, in bytes
 121  *
 122  * This function allocates, initializes and returns a new &struct hpsb_packet.
 123  * It can be used in interrupt context.  A header block is always included and
 124  * initialized with zeros.  Its size is big enough to contain all possible 1394
 125  * headers.  The data block is only allocated if @data_size is not zero.
 126  *
 127  * For packets for which responses will be received the @data_size has to be big
 128  * enough to contain the response's data block since no further allocation
 129  * occurs at response matching time.
 130  *
 131  * The packet's generation value will be set to the current generation number
 132  * for ease of use.  Remember to overwrite it with your own recorded generation
 133  * number if you can not be sure that your code will not race with a bus reset.
 134  *
 135  * Return value: A pointer to a &struct hpsb_packet or NULL on allocation
 136  * failure.
 137  */
 138 struct hpsb_packet *hpsb_alloc_packet(size_t data_size)
 139 {
 140         struct hpsb_packet *packet;
 141
 142         data_size = ((data_size + 3) & ~3);
 143
 144         packet = kzalloc(sizeof(*packet) + data_size, GFP_ATOMIC);
 145         if (!packet)
 146                 return NULL;
 147
 148         packet->state = hpsb_unused;
 149         packet->generation = -1;
 150         INIT_LIST_HEAD(&packet->driver_list);
 151         INIT_LIST_HEAD(&packet->queue);
 152         atomic_set(&packet->refcnt, 1);
 153
 154         if (data_size) {
 155                 packet->data = packet->embedded_data;
 156                 packet->allocated_data_size = data_size;
 157         }
 158         return packet;
 159 }
 160
 161 /**
 162  * hpsb_free_packet - free packet and data associated with it
 163  * @packet: packet to free (is NULL safe)
 164  *
 165  * Frees @packet->data only if it was allocated through hpsb_alloc_packet().
 166  */
 167 void hpsb_free_packet(struct hpsb_packet *packet)
 168 {
 169         if (packet && atomic_dec_and_test(&packet->refcnt)) {
 170                 BUG_ON(!list_empty(&packet->driver_list) ||
 171                        !list_empty(&packet->queue));
 172                 kfree(packet);
 173         }
 174 }
 175
 176 /**
 177  * hpsb_reset_bus - initiate bus reset on the given host
 178  * @host: host controller whose bus to reset
 179  * @type: one of enum reset_types
 180  *
 181  * Returns 1 if bus reset already in progress, 0 otherwise.
 182  */
 183 int hpsb_reset_bus(struct hpsb_host *host, int type)
 184 {
 185         if (!host->in_bus_reset) {
 186                 host->driver->devctl(host, RESET_BUS, type);
 187                 return 0;
 188         } else {
 189                 return 1;
 190         }
 191 }
 192
 193 /**
 194  * hpsb_read_cycle_timer - read cycle timer register and system time
 195  * @host: host whose isochronous cycle timer register is read
 196  * @cycle_timer: address of bitfield to return the register contents
 197  * @local_time: address to return the system time
 198  *
 199  * The format of * @cycle_timer, is described in OHCI 1.1 clause 5.13. This
 200  * format is also read from non-OHCI controllers. * @local_time contains the
 201  * system time in microseconds since the Epoch, read at the moment when the
 202  * cycle timer was read.
 203  *
 204  * Return value: 0 for success or error number otherwise.
 205  */
 206 int hpsb_read_cycle_timer(struct hpsb_host *host, u32 *cycle_timer,
 207                           u64 *local_time)
 208 {
 209         int ctr;
 210         struct timeval tv;
 211         unsigned long flags;
 212
 213         if (!host || !cycle_timer || !local_time)
 214                 return -EINVAL;
 215
 216         preempt_disable();
 217         local_irq_save(flags);
 218
 219         ctr = host->driver->devctl(host, GET_CYCLE_COUNTER, 0);
 220         if (ctr)
 221                 do_gettimeofday(&tv);
 222
 223         local_irq_restore(flags);
 224         preempt_enable();
 225
 226         if (!ctr)
 227                 return -EIO;
 228         *cycle_timer = ctr;
 229         *local_time = tv.tv_sec * 1000000ULL + tv.tv_usec;
 230         return 0;
 231 }
 232
 233 /**
 234  * hpsb_bus_reset - notify a bus reset to the core
 235  *
 236  * For host driver module usage.  Safe to use in interrupt context, although
 237  * quite complex; so you may want to run it in the bottom rather than top half.
 238  *
 239  * Returns 1 if bus reset already in progress, 0 otherwise.
 240  */
 241 int hpsb_bus_reset(struct hpsb_host *host)
 242 {
 243         if (host->in_bus_reset) {
 244                 HPSB_NOTICE("%s called while bus reset already in progress",
 245                             __func__);
 246                 return 1;
 247         }
 248
 249         abort_requests(host);
 250         host->in_bus_reset = 1;
 251         host->irm_id = -1;
 252         host->is_irm = 0;
 253         host->busmgr_id = -1;
 254         host->is_busmgr = 0;
 255         host->is_cycmst = 0;
 256         host->node_count = 0;
 257         host->selfid_count = 0;
 258
 259         return 0;
 260 }
 261
 262
 263 /*
 264  * Verify num_of_selfids SelfIDs and return number of nodes.  Return zero in
 265  * case verification failed.
 266  */
 267 static int check_selfids(struct hpsb_host *host)
 268 {
 269         int nodeid = -1;
 270         int rest_of_selfids = host->selfid_count;
 271         struct selfid *sid = (struct selfid *)host->topology_map;
 272         struct ext_selfid *esid;
 273         int esid_seq = 23;
 274
 275         host->nodes_active = 0;
 276
 277         while (rest_of_selfids--) {
 278                 if (!sid->extended) {
 279                         nodeid++;
 280                         esid_seq = 0;
 281
 282                         if (sid->phy_id != nodeid) {
 283                                 HPSB_INFO("SelfIDs failed monotony check with "
 284                                           "%d", sid->phy_id);
 285                                 return 0;
 286                         }
 287
 288                         if (sid->link_active) {
 289                                 host->nodes_active++;
 290                                 if (sid->contender)
 291                                         host->irm_id = LOCAL_BUS | sid->phy_id;
 292                         }
 293                 } else {
 294                         esid = (struct ext_selfid *)sid;
 295
 296                         if ((esid->phy_id != nodeid)
 297                             || (esid->seq_nr != esid_seq)) {
 298                                 HPSB_INFO("SelfIDs failed monotony check with "
 299                                           "%d/%d", esid->phy_id, esid->seq_nr);
 300                                 return 0;
 301                         }
 302                         esid_seq++;
 303                 }
 304                 sid++;
 305         }
 306
 307         esid = (struct ext_selfid *)(sid - 1);
 308         while (esid->extended) {
 309                 if ((esid->porta == SELFID_PORT_PARENT) ||
 310                     (esid->portb == SELFID_PORT_PARENT) ||
 311                     (esid->portc == SELFID_PORT_PARENT) ||
 312                     (esid->portd == SELFID_PORT_PARENT) ||
 313                     (esid->porte == SELFID_PORT_PARENT) ||
 314                     (esid->portf == SELFID_PORT_PARENT) ||
 315                     (esid->portg == SELFID_PORT_PARENT) ||
 316                     (esid->porth == SELFID_PORT_PARENT)) {
 317                         HPSB_INFO("SelfIDs failed root check on "
 318                                   "extended SelfID");
 319                         return 0;
 320                 }
 321                 esid--;
 322         }
 323
 324         sid = (struct selfid *)esid;
 325         if ((sid->port0 == SELFID_PORT_PARENT) ||
 326             (sid->port1 == SELFID_PORT_PARENT) ||
 327             (sid->port2 == SELFID_PORT_PARENT)) {
 328                 HPSB_INFO("SelfIDs failed root check");
 329                 return 0;
 330         }
 331
 332         host->node_count = nodeid + 1;
 333         return 1;
 334 }
 335
 336 static void build_speed_map(struct hpsb_host *host, int nodecount)
 337 {
 338         u8 cldcnt[nodecount];
 339         u8 *map = host->speed_map;
 340         u8 *speedcap = host->speed;
 341         struct selfid *sid;
 342         struct ext_selfid *esid;
 343         int i, j, n;
 344
 345         for (i = 0; i < (nodecount * 64); i += 64) {
 346                 for (j = 0; j < nodecount; j++) {
 347                         map[i+j] = IEEE1394_SPEED_MAX;
 348                 }
 349         }
 350
 351         for (i = 0; i < nodecount; i++) {
 352                 cldcnt[i] = 0;
 353         }
 354
 355         /* find direct children count and speed */
 356         for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
 357                      n = nodecount - 1;
 358              (void *)sid >= (void *)host->topology_map; sid--) {
 359                 if (sid->extended) {
 360                         esid = (struct ext_selfid *)sid;
 361
 362                         if (esid->porta == SELFID_PORT_CHILD) cldcnt[n]++;
 363                         if (esid->portb == SELFID_PORT_CHILD) cldcnt[n]++;
 364                         if (esid->portc == SELFID_PORT_CHILD) cldcnt[n]++;
 365                         if (esid->portd == SELFID_PORT_CHILD) cldcnt[n]++;
 366                         if (esid->porte == SELFID_PORT_CHILD) cldcnt[n]++;
 367                         if (esid->portf == SELFID_PORT_CHILD) cldcnt[n]++;
 368                         if (esid->portg == SELFID_PORT_CHILD) cldcnt[n]++;
 369                         if (esid->porth == SELFID_PORT_CHILD) cldcnt[n]++;
 370                 } else {
 371                         if (sid->port0 == SELFID_PORT_CHILD) cldcnt[n]++;
 372                         if (sid->port1 == SELFID_PORT_CHILD) cldcnt[n]++;
 373                         if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++;
 374
 375                         speedcap[n] = sid->speed;
 376                         if (speedcap[n] > host->csr.lnk_spd)
 377                                 speedcap[n] = host->csr.lnk_spd;
 378                         n--;
 379                 }
 380         }
 381
 382         /* set self mapping */
 383         for (i = 0; i < nodecount; i++) {
 384                 map[64*i + i] = speedcap[i];
 385         }
 386
 387         /* fix up direct children count to total children count;
 388          * also fix up speedcaps for sibling and parent communication */
 389         for (i = 1; i < nodecount; i++) {
 390                 for (j = cldcnt[i], n = i - 1; j > 0; j--) {
 391                         cldcnt[i] += cldcnt[n];
 392                         speedcap[n] = min(speedcap[n], speedcap[i]);
 393                         n -= cldcnt[n] + 1;
 394                 }
 395         }
 396
 397         for (n = 0; n < nodecount; n++) {
 398                 for (i = n - cldcnt[n]; i <= n; i++) {
 399                         for (j = 0; j < (n - cldcnt[n]); j++) {
 400                                 map[j*64 + i] = map[i*64 + j] =
 401                                         min(map[i*64 + j], speedcap[n]);
 402                         }
 403                         for (j = n + 1; j < nodecount; j++) {
 404                                 map[j*64 + i] = map[i*64 + j] =
 405                                         min(map[i*64 + j], speedcap[n]);
 406                         }
 407                 }
 408         }
 409
 410 #if SELFID_SPEED_UNKNOWN != IEEE1394_SPEED_MAX
 411         /* assume maximum speed for 1394b PHYs, nodemgr will correct it */
 412         for (n = 0; n < nodecount; n++)
 413                 if (speedcap[n] == SELFID_SPEED_UNKNOWN)
 414                         speedcap[n] = IEEE1394_SPEED_MAX;
 415 #endif
 416 }
 417
 418
 419 /**
 420  * hpsb_selfid_received - hand over received selfid packet to the core
 421  *
 422  * For host driver module usage.  Safe to use in interrupt context.
 423  *
 424  * The host driver should have done a successful complement check (second
 425  * quadlet is complement of first) beforehand.
 426  */
 427 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 428 {
 429         if (host->in_bus_reset) {
 430                 HPSB_VERBOSE("Including SelfID 0x%x", sid);
 431                 host->topology_map[host->selfid_count++] = sid;
 432         } else {
 433                 HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
 434                             sid, NODEID_TO_BUS(host->node_id));
 435         }
 436 }
 437
 438 /**
 439  * hpsb_selfid_complete - notify completion of SelfID stage to the core
 440  *
 441  * For host driver module usage.  Safe to use in interrupt context, although
 442  * quite complex; so you may want to run it in the bottom rather than top half.
 443  *
 444  * Notify completion of SelfID stage to the core and report new physical ID
 445  * and whether host is root now.
 446  */
 447 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 448 {
 449         if (!host->in_bus_reset)
 450                 HPSB_NOTICE("SelfID completion called outside of bus reset!");
 451
 452         host->node_id = LOCAL_BUS | phyid;
 453         host->is_root = isroot;
 454
 455         if (!check_selfids(host)) {
 456                 if (host->reset_retries++ < 20) {
 457                         /* selfid stage did not complete without error */
 458                         HPSB_NOTICE("Error in SelfID stage, resetting");
 459                         host->in_bus_reset = 0;
 460                         /* this should work from ohci1394 now... */
 461                         hpsb_reset_bus(host, LONG_RESET);
 462                         return;
 463                 } else {
 464                         HPSB_NOTICE("Stopping out-of-control reset loop");
 465                         HPSB_NOTICE("Warning - topology map and speed map will not be valid");
 466                         host->reset_retries = 0;
 467                 }
 468         } else {
 469                 host->reset_retries = 0;
 470                 build_speed_map(host, host->node_count);
 471         }
 472
 473         HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
 474                      "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
 475
 476         /* irm_id is kept up to date by check_selfids() */
 477         if (host->irm_id == host->node_id) {
 478                 host->is_irm = 1;
 479         } else {
 480                 host->is_busmgr = 0;
 481                 host->is_irm = 0;
 482         }
 483
 484         if (isroot) {
 485                 host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
 486                 host->is_cycmst = 1;
 487         }
 488         atomic_inc(&host->generation);
 489         host->in_bus_reset = 0;
 490         highlevel_host_reset(host);
 491 }
 492
 493 static DEFINE_SPINLOCK(pending_packets_lock);
 494
 495 /**
 496  * hpsb_packet_sent - notify core of sending a packet
 497  *
 498  * For host driver module usage.  Safe to call from within a transmit packet
 499  * routine.
 500  *
 501  * Notify core of sending a packet.  Ackcode is the ack code returned for async
 502  * transmits or ACKX_SEND_ERROR if the transmission failed completely; ACKX_NONE
 503  * for other cases (internal errors that don't justify a panic).
 504  */
 505 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 506                       int ackcode)
 507 {
 508         unsigned long flags;
 509
 510         spin_lock_irqsave(&pending_packets_lock, flags);
 511
 512         packet->ack_code = ackcode;
 513
 514         if (packet->no_waiter || packet->state == hpsb_complete) {
 515                 /* if packet->no_waiter, must not have a tlabel allocated */
 516                 spin_unlock_irqrestore(&pending_packets_lock, flags);
 517                 hpsb_free_packet(packet);
 518                 return;
 519         }
 520
 521         atomic_dec(&packet->refcnt);    /* drop HC's reference */
 522         /* here the packet must be on the host->pending_packets queue */
 523
 524         if (ackcode != ACK_PENDING || !packet->expect_response) {
 525                 packet->state = hpsb_complete;
 526                 list_del_init(&packet->queue);
 527                 spin_unlock_irqrestore(&pending_packets_lock, flags);
 528                 queue_packet_complete(packet);
 529                 return;
 530         }
 531
 532         packet->state = hpsb_pending;
 533         packet->sendtime = jiffies;
 534
 535         spin_unlock_irqrestore(&pending_packets_lock, flags);
 536
 537         mod_timer(&host->timeout, jiffies + host->timeout_interval);
 538 }
 539
 540 /**
 541  * hpsb_send_phy_config - transmit a PHY configuration packet on the bus
 542  * @host: host that PHY config packet gets sent through
 543  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
 544  * @gapcnt: gap count value to set (-1 = don't set gap count)
 545  *
 546  * This function sends a PHY config packet on the bus through the specified
 547  * host.
 548  *
 549  * Return value: 0 for success or negative error number otherwise.
 550  */
 551 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 552 {
 553         struct hpsb_packet *packet;
 554         quadlet_t d = 0;
 555         int retval = 0;
 556
 557         if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
 558            (rootid == -1 && gapcnt == -1)) {
 559                 HPSB_DEBUG("Invalid Parameter: rootid = %d   gapcnt = %d",
 560                            rootid, gapcnt);
 561                 return -EINVAL;
 562         }
 563
 564         if (rootid != -1)
 565                 d |= PHYPACKET_PHYCONFIG_R | rootid << PHYPACKET_PORT_SHIFT;
 566         if (gapcnt != -1)
 567                 d |= PHYPACKET_PHYCONFIG_T | gapcnt << PHYPACKET_GAPCOUNT_SHIFT;
 568
 569         packet = hpsb_make_phypacket(host, d);
 570         if (!packet)
 571                 return -ENOMEM;
 572
 573         packet->generation = get_hpsb_generation(host);
 574         retval = hpsb_send_packet_and_wait(packet);
 575         hpsb_free_packet(packet);
 576
 577         return retval;
 578 }
 579
 580 /**
 581  * hpsb_send_packet - transmit a packet on the bus
 582  * @packet: packet to send
 583  *
 584  * The packet is sent through the host specified in the packet->host field.
 585  * Before sending, the packet's transmit speed is automatically determined
 586  * using the local speed map when it is an async, non-broadcast packet.
 587  *
 588  * Possibilities for failure are that host is either not initialized, in bus
 589  * reset, the packet's generation number doesn't match the current generation
 590  * number or the host reports a transmit error.
 591  *
 592  * Return value: 0 on success, negative errno on failure.
 593  */
 594 int hpsb_send_packet(struct hpsb_packet *packet)
 595 {
 596         struct hpsb_host *host = packet->host;
 597
 598         if (host->is_shutdown)
 599                 return -EINVAL;
 600         if (host->in_bus_reset ||
 601             (packet->generation != get_hpsb_generation(host)))
 602                 return -EAGAIN;
 603
 604         packet->state = hpsb_queued;
 605
 606         /* This just seems silly to me */
 607         WARN_ON(packet->no_waiter && packet->expect_response);
 608
 609         if (!packet->no_waiter || packet->expect_response) {
 610                 unsigned long flags;
 611
 612                 atomic_inc(&packet->refcnt);
 613                 /* Set the initial "sendtime" to 10 seconds from now, to
 614                    prevent premature expiry.  If a packet takes more than
 615                    10 seconds to hit the wire, we have bigger problems :) */
 616                 packet->sendtime = jiffies + 10 * HZ;
 617                 spin_lock_irqsave(&pending_packets_lock, flags);
 618                 list_add_tail(&packet->queue, &host->pending_packets);
 619                 spin_unlock_irqrestore(&pending_packets_lock, flags);
 620         }
 621
 622         if (packet->node_id == host->node_id) {
 623                 /* it is a local request, so handle it locally */
 624
 625                 quadlet_t *data;
 626                 size_t size = packet->data_size + packet->header_size;
 627
 628                 data = kmalloc(size, GFP_ATOMIC);
 629                 if (!data) {
 630                         HPSB_ERR("unable to allocate memory for concatenating header and data");
 631                         return -ENOMEM;
 632                 }
 633
 634                 memcpy(data, packet->header, packet->header_size);
 635
 636                 if (packet->data_size)
 637                         memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size);
 638
 639                 dump_packet("send packet local", packet->header, packet->header_size, -1);
 640
 641                 hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
 642                 hpsb_packet_received(host, data, size, 0);
 643
 644                 kfree(data);
 645
 646                 return 0;
 647         }
 648
 649         if (packet->type == hpsb_async &&
 650             NODEID_TO_NODE(packet->node_id) != ALL_NODES)
 651                 packet->speed_code =
 652                         host->speed[NODEID_TO_NODE(packet->node_id)];
 653
 654         dump_packet("send packet", packet->header, packet->header_size, packet->speed_code);
 655
 656         return host->driver->transmit_packet(host, packet);
 657 }
 658
 659 /* We could just use complete() directly as the packet complete
 660  * callback, but this is more typesafe, in the sense that we get a
 661  * compiler error if the prototype for complete() changes. */
 662
 663 static void complete_packet(void *data)
 664 {
 665         complete((struct completion *) data);
 666 }
 667
 668 /**
 669  * hpsb_send_packet_and_wait - enqueue packet, block until transaction completes
 670  * @packet: packet to send
 671  *
 672  * Return value: 0 on success, negative errno on failure.
 673  */
 674 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 675 {
 676         struct completion done;
 677         int retval;
 678
 679         init_completion(&done);
 680         hpsb_set_packet_complete_task(packet, complete_packet, &done);
 681         retval = hpsb_send_packet(packet);
 682         if (retval == 0)
 683                 wait_for_completion(&done);
 684
 685         return retval;
 686 }
 687
 688 static void send_packet_nocare(struct hpsb_packet *packet)
 689 {
 690         if (hpsb_send_packet(packet) < 0) {
 691                 hpsb_free_packet(packet);
 692         }
 693 }
 694
 695 static size_t packet_size_to_data_size(size_t packet_size, size_t header_size,
 696                                        size_t buffer_size, int tcode)
 697 {
 698         size_t ret = packet_size <= header_size ? 0 : packet_size - header_size;
 699
 700         if (unlikely(ret > buffer_size))
 701                 ret = buffer_size;
 702
 703         if (unlikely(ret + header_size != packet_size))
 704                 HPSB_ERR("unexpected packet size %zd (tcode %d), bug?",
 705                          packet_size, tcode);
 706         return ret;
 707 }
 708
 709 static void handle_packet_response(struct hpsb_host *host, int tcode,
 710                                    quadlet_t *data, size_t size)
 711 {
 712         struct hpsb_packet *packet;
 713         int tlabel = (data[0] >> 10) & 0x3f;
 714         size_t header_size;
 715         unsigned long flags;
 716
 717         spin_lock_irqsave(&pending_packets_lock, flags);
 718
 719         list_for_each_entry(packet, &host->pending_packets, queue)
 720                 if (packet->tlabel == tlabel &&
 721                     packet->node_id == (data[1] >> 16))
 722                         goto found;
 723
 724         spin_unlock_irqrestore(&pending_packets_lock, flags);
 725         HPSB_DEBUG("unsolicited response packet received - %s",
 726                    "no tlabel match");
 727         dump_packet("contents", data, 16, -1);
 728         return;
 729
 730 found:
 731         switch (packet->tcode) {
 732         case TCODE_WRITEQ:
 733         case TCODE_WRITEB:
 734                 if (unlikely(tcode != TCODE_WRITE_RESPONSE))
 735                         break;
 736                 header_size = 12;
 737                 size = 0;
 738                 goto dequeue;
 739
 740         case TCODE_READQ:
 741                 if (unlikely(tcode != TCODE_READQ_RESPONSE))
 742                         break;
 743                 header_size = 16;
 744                 size = 0;
 745                 goto dequeue;
 746
 747         case TCODE_READB:
 748                 if (unlikely(tcode != TCODE_READB_RESPONSE))
 749                         break;
 750                 header_size = 16;
 751                 size = packet_size_to_data_size(size, header_size,
 752                                                 packet->allocated_data_size,
 753                                                 tcode);
 754                 goto dequeue;
 755
 756         case TCODE_LOCK_REQUEST:
 757                 if (unlikely(tcode != TCODE_LOCK_RESPONSE))
 758                         break;
 759                 header_size = 16;
 760                 size = packet_size_to_data_size(min(size, (size_t)(16 + 8)),
 761                                                 header_size,
 762                                                 packet->allocated_data_size,
 763                                                 tcode);
 764                 goto dequeue;
 765         }
 766
 767         spin_unlock_irqrestore(&pending_packets_lock, flags);
 768         HPSB_DEBUG("unsolicited response packet received - %s",
 769                    "tcode mismatch");
 770         dump_packet("contents", data, 16, -1);
 771         return;
 772
 773 dequeue:
 774         list_del_init(&packet->queue);
 775         spin_unlock_irqrestore(&pending_packets_lock, flags);
 776
 777         if (packet->state == hpsb_queued) {
 778                 packet->sendtime = jiffies;
 779                 packet->ack_code = ACK_PENDING;
 780         }
 781         packet->state = hpsb_complete;
 782
 783         memcpy(packet->header, data, header_size);
 784         if (size)
 785                 memcpy(packet->data, data + 4, size);
 786
 787         queue_packet_complete(packet);
 788 }
 789
 790
 791 static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 792                                                quadlet_t *data, size_t dsize)
 793 {
 794         struct hpsb_packet *p;
 795
 796         p = hpsb_alloc_packet(dsize);
 797         if (unlikely(p == NULL)) {
 798                 /* FIXME - send data_error response */
 799                 HPSB_ERR("out of memory, cannot send response packet");
 800                 return NULL;
 801         }
 802
 803         p->type = hpsb_async;
 804         p->state = hpsb_unused;
 805         p->host = host;
 806         p->node_id = data[1] >> 16;
 807         p->tlabel = (data[0] >> 10) & 0x3f;
 808         p->no_waiter = 1;
 809
 810         p->generation = get_hpsb_generation(host);
 811
 812         if (dsize % 4)
 813                 p->data[dsize / 4] = 0;
 814
 815         return p;
 816 }
 817
 818 #define PREP_ASYNC_HEAD_RCODE(tc) \
 819         packet->tcode = tc; \
 820         packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \
 821                 | (1 << 8) | (tc << 4); \
 822         packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \
 823         packet->header[2] = 0
 824
 825 static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
 826                               quadlet_t data)
 827 {
 828         PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
 829         packet->header[3] = data;
 830         packet->header_size = 16;
 831         packet->data_size = 0;
 832 }
 833
 834 static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 835                                int length)
 836 {
 837         if (rcode != RCODE_COMPLETE)
 838                 length = 0;
 839
 840         PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE);
 841         packet->header[3] = length << 16;
 842         packet->header_size = 16;
 843         packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0);
 844 }
 845
 846 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 847 {
 848         PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
 849         packet->header_size = 12;
 850         packet->data_size = 0;
 851 }
 852
 853 static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
 854                           int length)
 855 {
 856         if (rcode != RCODE_COMPLETE)
 857                 length = 0;
 858
 859         PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE);
 860         packet->header[3] = (length << 16) | extcode;
 861         packet->header_size = 16;
 862         packet->data_size = length;
 863 }
 864
 865 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 866                                    quadlet_t *data, size_t size,
 867                                    int write_acked)
 868 {
 869         struct hpsb_packet *packet;
 870         int length, rcode, extcode;
 871         quadlet_t buffer;
 872         nodeid_t source = data[1] >> 16;
 873         nodeid_t dest = data[0] >> 16;
 874         u16 flags = (u16) data[0];
 875         u64 addr;
 876
 877         /* FIXME?
 878          * Out-of-bounds lengths are left for highlevel_read|write to cap. */
 879
 880         switch (tcode) {
 881         case TCODE_WRITEQ:
 882                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 883                 rcode = highlevel_write(host, source, dest, data + 3,
 884                                         addr, 4, flags);
 885                 goto handle_write_request;
 886
 887         case TCODE_WRITEB:
 888                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 889                 rcode = highlevel_write(host, source, dest, data + 4,
 890                                         addr, data[3] >> 16, flags);
 891 handle_write_request:
 892                 if (rcode < 0 || write_acked ||
 893                     NODEID_TO_NODE(data[0] >> 16) == NODE_MASK)
 894                         return;
 895                 /* not a broadcast write, reply */
 896                 packet = create_reply_packet(host, data, 0);
 897                 if (packet) {
 898                         fill_async_write_resp(packet, rcode);
 899                         send_packet_nocare(packet);
 900                 }
 901                 return;
 902
 903         case TCODE_READQ:
 904                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 905                 rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
 906                 if (rcode < 0)
 907                         return;
 908
 909                 packet = create_reply_packet(host, data, 0);
 910                 if (packet) {
 911                         fill_async_readquad_resp(packet, rcode, buffer);
 912                         send_packet_nocare(packet);
 913                 }
 914                 return;
 915
 916         case TCODE_READB:
 917                 length = data[3] >> 16;
 918                 packet = create_reply_packet(host, data, length);
 919                 if (!packet)
 920                         return;
 921
 922                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 923                 rcode = highlevel_read(host, source, packet->data, addr,
 924                                        length, flags);
 925                 if (rcode < 0) {
 926                         hpsb_free_packet(packet);
 927                         return;
 928                 }
 929                 fill_async_readblock_resp(packet, rcode, length);
 930                 send_packet_nocare(packet);
 931                 return;
 932
 933         case TCODE_LOCK_REQUEST:
 934                 length = data[3] >> 16;
 935                 extcode = data[3] & 0xffff;
 936                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 937
 938                 packet = create_reply_packet(host, data, 8);
 939                 if (!packet)
 940                         return;
 941
 942                 if (extcode == 0 || extcode >= 7) {
 943                         /* let switch default handle error */
 944                         length = 0;
 945                 }
 946
 947                 switch (length) {
 948                 case 4:
 949                         rcode = highlevel_lock(host, source, packet->data, addr,
 950                                                data[4], 0, extcode, flags);
 951                         fill_async_lock_resp(packet, rcode, extcode, 4);
 952                         break;
 953                 case 8:
 954                         if (extcode != EXTCODE_FETCH_ADD &&
 955                             extcode != EXTCODE_LITTLE_ADD) {
 956                                 rcode = highlevel_lock(host, source,
 957                                                        packet->data, addr,
 958                                                        data[5], data[4],
 959                                                        extcode, flags);
 960                                 fill_async_lock_resp(packet, rcode, extcode, 4);
 961                         } else {
 962                                 rcode = highlevel_lock64(host, source,
 963                                              (octlet_t *)packet->data, addr,
 964                                              *(octlet_t *)(data + 4), 0ULL,
 965                                              extcode, flags);
 966                                 fill_async_lock_resp(packet, rcode, extcode, 8);
 967                         }
 968                         break;
 969                 case 16:
 970                         rcode = highlevel_lock64(host, source,
 971                                                  (octlet_t *)packet->data, addr,
 972                                                  *(octlet_t *)(data + 6),
 973                                                  *(octlet_t *)(data + 4),
 974                                                  extcode, flags);
 975                         fill_async_lock_resp(packet, rcode, extcode, 8);
 976                         break;
 977                 default:
 978                         rcode = RCODE_TYPE_ERROR;
 979                         fill_async_lock_resp(packet, rcode, extcode, 0);
 980                 }
 981
 982                 if (rcode < 0)
 983                         hpsb_free_packet(packet);
 984                 else
 985                         send_packet_nocare(packet);
 986                 return;
 987         }
 988 }
 989
 990 /**
 991  * hpsb_packet_received - hand over received packet to the core
 992  *
 993  * For host driver module usage.
 994  *
 995  * The contents of data are expected to be the full packet but with the CRCs
 996  * left out (data block follows header immediately), with the header (i.e. the
 997  * first four quadlets) in machine byte order and the data block in big endian.
 998  * *@data can be safely overwritten after this call.
 999  *
1000  * If the packet is a write request, @write_acked is to be set to true if it was
1001  * ack_complete'd already, false otherwise.  This argument is ignored for any
1002  * other packet type.
1003  */
1004 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
1005                           int write_acked)
1006 {
1007         int tcode;
1008
1009         if (unlikely(host->in_bus_reset)) {
1010                 HPSB_DEBUG("received packet during reset; ignoring");
1011                 return;
1012         }
1013
1014         dump_packet("received packet", data, size, -1);
1015
1016         tcode = (data[0] >> 4) & 0xf;
1017
1018         switch (tcode) {
1019         case TCODE_WRITE_RESPONSE:
1020         case TCODE_READQ_RESPONSE:
1021         case TCODE_READB_RESPONSE:
1022         case TCODE_LOCK_RESPONSE:
1023                 handle_packet_response(host, tcode, data, size);
1024                 break;
1025
1026         case TCODE_WRITEQ:
1027         case TCODE_WRITEB:
1028         case TCODE_READQ:
1029         case TCODE_READB:
1030         case TCODE_LOCK_REQUEST:
1031                 handle_incoming_packet(host, tcode, data, size, write_acked);
1032                 break;
1033
1034         case TCODE_CYCLE_START:
1035                 /* simply ignore this packet if it is passed on */
1036                 break;
1037
1038         default:
1039                 HPSB_DEBUG("received packet with bogus transaction code %d",
1040                            tcode);
1041                 break;
1042         }
1043 }
1044
1045 static void abort_requests(struct hpsb_host *host)
1046 {
1047         struct hpsb_packet *packet, *p;
1048         struct list_head tmp;
1049         unsigned long flags;
1050
1051         host->driver->devctl(host, CANCEL_REQUESTS, 0);
1052
1053         INIT_LIST_HEAD(&tmp);
1054         spin_lock_irqsave(&pending_packets_lock, flags);
1055         list_splice_init(&host->pending_packets, &tmp);
1056         spin_unlock_irqrestore(&pending_packets_lock, flags);
1057
1058         list_for_each_entry_safe(packet, p, &tmp, queue) {
1059                 list_del_init(&packet->queue);
1060                 packet->state = hpsb_complete;
1061                 packet->ack_code = ACKX_ABORTED;
1062                 queue_packet_complete(packet);
1063         }
1064 }
1065
1066 void abort_timedouts(unsigned long __opaque)
1067 {
1068         struct hpsb_host *host = (struct hpsb_host *)__opaque;
1069         struct hpsb_packet *packet, *p;
1070         struct list_head tmp;
1071         unsigned long flags, expire, j;
1072
1073         spin_lock_irqsave(&host->csr.lock, flags);
1074         expire = host->csr.expire;
1075         spin_unlock_irqrestore(&host->csr.lock, flags);
1076
1077         j = jiffies;
1078         INIT_LIST_HEAD(&tmp);
1079         spin_lock_irqsave(&pending_packets_lock, flags);
1080
1081         list_for_each_entry_safe(packet, p, &host->pending_packets, queue) {
1082                 if (time_before(packet->sendtime + expire, j))
1083                         list_move_tail(&packet->queue, &tmp);
1084                 else
1085                         /* Since packets are added to the tail, the oldest
1086                          * ones are first, always. When we get to one that
1087                          * isn't timed out, the rest aren't either. */
1088                         break;
1089         }
1090         if (!list_empty(&host->pending_packets))
1091                 mod_timer(&host->timeout, j + host->timeout_interval);
1092
1093         spin_unlock_irqrestore(&pending_packets_lock, flags);
1094
1095         list_for_each_entry_safe(packet, p, &tmp, queue) {
1096                 list_del_init(&packet->queue);
1097                 packet->state = hpsb_complete;
1098                 packet->ack_code = ACKX_TIMEOUT;
1099                 queue_packet_complete(packet);
1100         }
1101 }
1102
1103 static struct task_struct *khpsbpkt_thread;
1104 static LIST_HEAD(hpsbpkt_queue);
1105
1106 static void queue_packet_complete(struct hpsb_packet *packet)
1107 {
1108         unsigned long flags;
1109
1110         if (packet->no_waiter) {
1111                 hpsb_free_packet(packet);
1112                 return;
1113         }
1114         if (packet->complete_routine != NULL) {
1115                 spin_lock_irqsave(&pending_packets_lock, flags);
1116                 list_add_tail(&packet->queue, &hpsbpkt_queue);
1117                 spin_unlock_irqrestore(&pending_packets_lock, flags);
1118                 wake_up_process(khpsbpkt_thread);
1119         }
1120         return;
1121 }
1122
1123 /*
1124  * Kernel thread which handles packets that are completed.  This way the
1125  * packet's "complete" function is asynchronously run in process context.
1126  * Only packets which have a "complete" function may be sent here.
1127  */
1128 static int hpsbpkt_thread(void *__hi)
1129 {
1130         struct hpsb_packet *packet, *p;
1131         struct list_head tmp;
1132         int may_schedule;
1133
1134         while (!kthread_should_stop()) {
1135
1136                 INIT_LIST_HEAD(&tmp);
1137                 spin_lock_irq(&pending_packets_lock);
1138                 list_splice_init(&hpsbpkt_queue, &tmp);
1139                 spin_unlock_irq(&pending_packets_lock);
1140
1141                 list_for_each_entry_safe(packet, p, &tmp, queue) {
1142                         list_del_init(&packet->queue);
1143                         packet->complete_routine(packet->complete_data);
1144                 }
1145
1146                 set_current_state(TASK_INTERRUPTIBLE);
1147                 spin_lock_irq(&pending_packets_lock);
1148                 may_schedule = list_empty(&hpsbpkt_queue);
1149                 spin_unlock_irq(&pending_packets_lock);
1150                 if (may_schedule)
1151                         schedule();
1152                 __set_current_state(TASK_RUNNING);
1153         }
1154         return 0;
1155 }
1156
1157 static int __init ieee1394_init(void)
1158 {
1159         int i, ret;
1160
1161         /* non-fatal error */
1162         if (hpsb_init_config_roms()) {
1163                 HPSB_ERR("Failed to initialize some config rom entries.\n");
1164                 HPSB_ERR("Some features may not be available\n");
1165         }
1166
1167         khpsbpkt_thread = kthread_run(hpsbpkt_thread, NULL, "khpsbpkt");
1168         if (IS_ERR(khpsbpkt_thread)) {
1169                 HPSB_ERR("Failed to start hpsbpkt thread!\n");
1170                 ret = PTR_ERR(khpsbpkt_thread);
1171                 goto exit_cleanup_config_roms;
1172         }
1173
1174         if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
1175                 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
1176                 ret = -ENODEV;
1177                 goto exit_release_kernel_thread;
1178         }
1179
1180         ret = bus_register(&ieee1394_bus_type);
1181         if (ret < 0) {
1182                 HPSB_INFO("bus register failed");
1183                 goto release_chrdev;
1184         }
1185
1186         for (i = 0; fw_bus_attrs[i]; i++) {
1187                 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1188                 if (ret < 0) {
1189                         while (i >= 0) {
1190                                 bus_remove_file(&ieee1394_bus_type,
1191                                                 fw_bus_attrs[i--]);
1192                         }
1193                         bus_unregister(&ieee1394_bus_type);
1194                         goto release_chrdev;
1195                 }
1196         }
1197
1198         ret = class_register(&hpsb_host_class);
1199         if (ret < 0)
1200                 goto release_all_bus;
1201
1202         hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol");
1203         if (IS_ERR(hpsb_protocol_class)) {
1204                 ret = PTR_ERR(hpsb_protocol_class);
1205                 goto release_class_host;
1206         }
1207
1208         ret = init_csr();
1209         if (ret) {
1210                 HPSB_INFO("init csr failed");
1211                 ret = -ENOMEM;
1212                 goto release_class_protocol;
1213         }
1214
1215         if (disable_nodemgr) {
1216                 HPSB_INFO("nodemgr and IRM functionality disabled");
1217                 /* We shouldn't contend for IRM with nodemgr disabled, since
1218                    nodemgr implements functionality required of ieee1394a-2000
1219                    IRMs */
1220                 hpsb_disable_irm = 1;
1221
1222                 return 0;
1223         }
1224
1225         if (hpsb_disable_irm) {
1226                 HPSB_INFO("IRM functionality disabled");
1227         }
1228
1229         ret = init_ieee1394_nodemgr();
1230         if (ret < 0) {
1231                 HPSB_INFO("init nodemgr failed");
1232                 goto cleanup_csr;
1233         }
1234
1235         return 0;
1236
1237 cleanup_csr:
1238         cleanup_csr();
1239 release_class_protocol:
1240         class_destroy(hpsb_protocol_class);
1241 release_class_host:
1242         class_unregister(&hpsb_host_class);
1243 release_all_bus:
1244         for (i = 0; fw_bus_attrs[i]; i++)
1245                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1246         bus_unregister(&ieee1394_bus_type);
1247 release_chrdev:
1248         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1249 exit_release_kernel_thread:
1250         kthread_stop(khpsbpkt_thread);
1251 exit_cleanup_config_roms:
1252         hpsb_cleanup_config_roms();
1253         return ret;
1254 }
1255
1256 static void __exit ieee1394_cleanup(void)
1257 {
1258         int i;
1259
1260         if (!disable_nodemgr)
1261                 cleanup_ieee1394_nodemgr();
1262
1263         cleanup_csr();
1264
1265         class_destroy(hpsb_protocol_class);
1266         class_unregister(&hpsb_host_class);
1267         for (i = 0; fw_bus_attrs[i]; i++)
1268                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1269         bus_unregister(&ieee1394_bus_type);
1270
1271         kthread_stop(khpsbpkt_thread);
1272
1273         hpsb_cleanup_config_roms();
1274
1275         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1276 }
1277
1278 module_init(ieee1394_init);
1279 module_exit(ieee1394_cleanup);
1280
1281 /* Exported symbols */
1282
1283 /** hosts.c **/
1284 EXPORT_SYMBOL(hpsb_alloc_host);
1285 EXPORT_SYMBOL(hpsb_add_host);
1286 EXPORT_SYMBOL(hpsb_resume_host);
1287 EXPORT_SYMBOL(hpsb_remove_host);
1288 EXPORT_SYMBOL(hpsb_update_config_rom_image);
1289
1290 /** ieee1394_core.c **/
1291 EXPORT_SYMBOL(hpsb_speedto_str);
1292 EXPORT_SYMBOL(hpsb_protocol_class);
1293 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
1294 EXPORT_SYMBOL(hpsb_alloc_packet);
1295 EXPORT_SYMBOL(hpsb_free_packet);
1296 EXPORT_SYMBOL(hpsb_send_packet);
1297 EXPORT_SYMBOL(hpsb_reset_bus);
1298 EXPORT_SYMBOL(hpsb_read_cycle_timer);
1299 EXPORT_SYMBOL(hpsb_bus_reset);
1300 EXPORT_SYMBOL(hpsb_selfid_received);
1301 EXPORT_SYMBOL(hpsb_selfid_complete);
1302 EXPORT_SYMBOL(hpsb_packet_sent);
1303 EXPORT_SYMBOL(hpsb_packet_received);
1304 EXPORT_SYMBOL_GPL(hpsb_disable_irm);
1305
1306 /** ieee1394_transactions.c **/
1307 EXPORT_SYMBOL(hpsb_get_tlabel);
1308 EXPORT_SYMBOL(hpsb_free_tlabel);
1309 EXPORT_SYMBOL(hpsb_make_readpacket);
1310 EXPORT_SYMBOL(hpsb_make_writepacket);
1311 EXPORT_SYMBOL(hpsb_make_streampacket);
1312 EXPORT_SYMBOL(hpsb_make_lockpacket);
1313 EXPORT_SYMBOL(hpsb_make_lock64packet);
1314 EXPORT_SYMBOL(hpsb_make_phypacket);
1315 EXPORT_SYMBOL(hpsb_read);
1316 EXPORT_SYMBOL(hpsb_write);
1317 EXPORT_SYMBOL(hpsb_packet_success);
1318
1319 /** highlevel.c **/
1320 EXPORT_SYMBOL(hpsb_register_highlevel);
1321 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1322 EXPORT_SYMBOL(hpsb_register_addrspace);
1323 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1324 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1325 EXPORT_SYMBOL(hpsb_get_hostinfo);
1326 EXPORT_SYMBOL(hpsb_create_hostinfo);
1327 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1328 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1329 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1330 EXPORT_SYMBOL(hpsb_set_hostinfo);
1331
1332 /** nodemgr.c **/
1333 EXPORT_SYMBOL(hpsb_node_fill_packet);
1334 EXPORT_SYMBOL(hpsb_node_write);
1335 EXPORT_SYMBOL(__hpsb_register_protocol);
1336 EXPORT_SYMBOL(hpsb_unregister_protocol);
1337
1338 /** csr.c **/
1339 EXPORT_SYMBOL(hpsb_update_config_rom);
1340
1341 /** dma.c **/
1342 EXPORT_SYMBOL(dma_prog_region_init);
1343 EXPORT_SYMBOL(dma_prog_region_alloc);
1344 EXPORT_SYMBOL(dma_prog_region_free);
1345 EXPORT_SYMBOL(dma_region_init);
1346 EXPORT_SYMBOL(dma_region_alloc);
1347 EXPORT_SYMBOL(dma_region_free);
1348 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1349 EXPORT_SYMBOL(dma_region_sync_for_device);
1350 EXPORT_SYMBOL(dma_region_mmap);
1351 EXPORT_SYMBOL(dma_region_offset_to_bus);
1352
1353 /** iso.c **/
1354 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1355 EXPORT_SYMBOL(hpsb_iso_recv_init);
1356 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1357 EXPORT_SYMBOL(hpsb_iso_recv_start);
1358 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1359 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1360 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1361 EXPORT_SYMBOL(hpsb_iso_stop);
1362 EXPORT_SYMBOL(hpsb_iso_shutdown);
1363 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1364 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1365 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1366 EXPORT_SYMBOL(hpsb_iso_n_ready);
1367 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1368 EXPORT_SYMBOL(hpsb_iso_packet_received);
1369 EXPORT_SYMBOL(hpsb_iso_wake);
1370 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1371
1372 /** csr1212.c **/
1373 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1374 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1375 EXPORT_SYMBOL(csr1212_get_keyval);
1376 EXPORT_SYMBOL(csr1212_new_directory);
1377 EXPORT_SYMBOL(csr1212_parse_keyval);
1378 EXPORT_SYMBOL(csr1212_read);
1379 EXPORT_SYMBOL(csr1212_release_keyval);