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 #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 the task that runs when a packet
 100  * completes. You cannot call this more than once on a single packet
 101  * before it is sent.
 102  *
 103  * @packet: the packet whose completion we want the task added to
 104  * @routine: function to call
 105  * @data: data (if any) to pass to the above function
 106  */
 107 void hpsb_set_packet_complete_task(struct hpsb_packet *packet,
 108                                    void (*routine)(void *), void *data)
 109 {
 110         WARN_ON(packet->complete_routine != NULL);
 111         packet->complete_routine = routine;
 112         packet->complete_data = data;
 113         return;
 114 }
 115
 116 /**
 117  * hpsb_alloc_packet - allocate new packet structure
 118  * @data_size: size of the data block to be allocated
 119  *
 120  * This function allocates, initializes and returns a new &struct hpsb_packet.
 121  * It can be used in interrupt context.  A header block is always included, its
 122  * size is big enough to contain all possible 1394 headers.  The data block is
 123  * only allocated when @data_size is not zero.
 124  *
 125  * For packets for which responses will be received the @data_size has to be big
 126  * enough to contain the response's data block since no further allocation
 127  * occurs at response matching time.
 128  *
 129  * The packet's generation value will be set to the current generation number
 130  * for ease of use.  Remember to overwrite it with your own recorded generation
 131  * number if you can not be sure that your code will not race with a bus reset.
 132  *
 133  * Return value: A pointer to a &struct hpsb_packet or NULL on allocation
 134  * failure.
 135  */
 136 struct hpsb_packet *hpsb_alloc_packet(size_t data_size)
 137 {
 138         struct hpsb_packet *packet = NULL;
 139         struct sk_buff *skb;
 140
 141         data_size = ((data_size + 3) & ~3);
 142
 143         skb = alloc_skb(data_size + sizeof(*packet), GFP_ATOMIC);
 144         if (skb == NULL)
 145                 return NULL;
 146
 147         memset(skb->data, 0, data_size + sizeof(*packet));
 148
 149         packet = (struct hpsb_packet *)skb->data;
 150         packet->skb = skb;
 151
 152         packet->header = packet->embedded_header;
 153         packet->state = hpsb_unused;
 154         packet->generation = -1;
 155         INIT_LIST_HEAD(&packet->driver_list);
 156         atomic_set(&packet->refcnt, 1);
 157
 158         if (data_size) {
 159                 packet->data = (quadlet_t *)(skb->data + sizeof(*packet));
 160                 packet->data_size = data_size;
 161         }
 162
 163         return packet;
 164 }
 165
 166
 167 /**
 168  * hpsb_free_packet - free packet and data associated with it
 169  * @packet: packet to free (is NULL safe)
 170  *
 171  * This function will free packet->data and finally the packet itself.
 172  */
 173 void hpsb_free_packet(struct hpsb_packet *packet)
 174 {
 175         if (packet && atomic_dec_and_test(&packet->refcnt)) {
 176                 BUG_ON(!list_empty(&packet->driver_list));
 177                 kfree_skb(packet->skb);
 178         }
 179 }
 180
 181
 182 int hpsb_reset_bus(struct hpsb_host *host, int type)
 183 {
 184         if (!host->in_bus_reset) {
 185                 host->driver->devctl(host, RESET_BUS, type);
 186                 return 0;
 187         } else {
 188                 return 1;
 189         }
 190 }
 191
 192 /**
 193  * hpsb_read_cycle_timer - read cycle timer register and system time
 194  * @host: host whose isochronous cycle timer register is read
 195  * @cycle_timer: address of bitfield to return the register contents
 196  * @local_time: address to return the system time
 197  *
 198  * The format of * @cycle_timer, is described in OHCI 1.1 clause 5.13. This
 199  * format is also read from non-OHCI controllers. * @local_time contains the
 200  * system time in microseconds since the Epoch, read at the moment when the
 201  * cycle timer was read.
 202  *
 203  * Return value: 0 for success or error number otherwise.
 204  */
 205 int hpsb_read_cycle_timer(struct hpsb_host *host, u32 *cycle_timer,
 206                           u64 *local_time)
 207 {
 208         int ctr;
 209         struct timeval tv;
 210         unsigned long flags;
 211
 212         if (!host || !cycle_timer || !local_time)
 213                 return -EINVAL;
 214
 215         preempt_disable();
 216         local_irq_save(flags);
 217
 218         ctr = host->driver->devctl(host, GET_CYCLE_COUNTER, 0);
 219         if (ctr)
 220                 do_gettimeofday(&tv);
 221
 222         local_irq_restore(flags);
 223         preempt_enable();
 224
 225         if (!ctr)
 226                 return -EIO;
 227         *cycle_timer = ctr;
 228         *local_time = tv.tv_sec * 1000000ULL + tv.tv_usec;
 229         return 0;
 230 }
 231
 232 int hpsb_bus_reset(struct hpsb_host *host)
 233 {
 234         if (host->in_bus_reset) {
 235                 HPSB_NOTICE("%s called while bus reset already in progress",
 236                             __FUNCTION__);
 237                 return 1;
 238         }
 239
 240         abort_requests(host);
 241         host->in_bus_reset = 1;
 242         host->irm_id = -1;
 243         host->is_irm = 0;
 244         host->busmgr_id = -1;
 245         host->is_busmgr = 0;
 246         host->is_cycmst = 0;
 247         host->node_count = 0;
 248         host->selfid_count = 0;
 249
 250         return 0;
 251 }
 252
 253
 254 /*
 255  * Verify num_of_selfids SelfIDs and return number of nodes.  Return zero in
 256  * case verification failed.
 257  */
 258 static int check_selfids(struct hpsb_host *host)
 259 {
 260         int nodeid = -1;
 261         int rest_of_selfids = host->selfid_count;
 262         struct selfid *sid = (struct selfid *)host->topology_map;
 263         struct ext_selfid *esid;
 264         int esid_seq = 23;
 265
 266         host->nodes_active = 0;
 267
 268         while (rest_of_selfids--) {
 269                 if (!sid->extended) {
 270                         nodeid++;
 271                         esid_seq = 0;
 272
 273                         if (sid->phy_id != nodeid) {
 274                                 HPSB_INFO("SelfIDs failed monotony check with "
 275                                           "%d", sid->phy_id);
 276                                 return 0;
 277                         }
 278
 279                         if (sid->link_active) {
 280                                 host->nodes_active++;
 281                                 if (sid->contender)
 282                                         host->irm_id = LOCAL_BUS | sid->phy_id;
 283                         }
 284                 } else {
 285                         esid = (struct ext_selfid *)sid;
 286
 287                         if ((esid->phy_id != nodeid)
 288                             || (esid->seq_nr != esid_seq)) {
 289                                 HPSB_INFO("SelfIDs failed monotony check with "
 290                                           "%d/%d", esid->phy_id, esid->seq_nr);
 291                                 return 0;
 292                         }
 293                         esid_seq++;
 294                 }
 295                 sid++;
 296         }
 297
 298         esid = (struct ext_selfid *)(sid - 1);
 299         while (esid->extended) {
 300                 if ((esid->porta == SELFID_PORT_PARENT) ||
 301                     (esid->portb == SELFID_PORT_PARENT) ||
 302                     (esid->portc == SELFID_PORT_PARENT) ||
 303                     (esid->portd == SELFID_PORT_PARENT) ||
 304                     (esid->porte == SELFID_PORT_PARENT) ||
 305                     (esid->portf == SELFID_PORT_PARENT) ||
 306                     (esid->portg == SELFID_PORT_PARENT) ||
 307                     (esid->porth == SELFID_PORT_PARENT)) {
 308                         HPSB_INFO("SelfIDs failed root check on "
 309                                   "extended SelfID");
 310                         return 0;
 311                 }
 312                 esid--;
 313         }
 314
 315         sid = (struct selfid *)esid;
 316         if ((sid->port0 == SELFID_PORT_PARENT) ||
 317             (sid->port1 == SELFID_PORT_PARENT) ||
 318             (sid->port2 == SELFID_PORT_PARENT)) {
 319                 HPSB_INFO("SelfIDs failed root check");
 320                 return 0;
 321         }
 322
 323         host->node_count = nodeid + 1;
 324         return 1;
 325 }
 326
 327 static void build_speed_map(struct hpsb_host *host, int nodecount)
 328 {
 329         u8 cldcnt[nodecount];
 330         u8 *map = host->speed_map;
 331         u8 *speedcap = host->speed;
 332         struct selfid *sid;
 333         struct ext_selfid *esid;
 334         int i, j, n;
 335
 336         for (i = 0; i < (nodecount * 64); i += 64) {
 337                 for (j = 0; j < nodecount; j++) {
 338                         map[i+j] = IEEE1394_SPEED_MAX;
 339                 }
 340         }
 341
 342         for (i = 0; i < nodecount; i++) {
 343                 cldcnt[i] = 0;
 344         }
 345
 346         /* find direct children count and speed */
 347         for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
 348                      n = nodecount - 1;
 349              (void *)sid >= (void *)host->topology_map; sid--) {
 350                 if (sid->extended) {
 351                         esid = (struct ext_selfid *)sid;
 352
 353                         if (esid->porta == SELFID_PORT_CHILD) cldcnt[n]++;
 354                         if (esid->portb == SELFID_PORT_CHILD) cldcnt[n]++;
 355                         if (esid->portc == SELFID_PORT_CHILD) cldcnt[n]++;
 356                         if (esid->portd == SELFID_PORT_CHILD) cldcnt[n]++;
 357                         if (esid->porte == SELFID_PORT_CHILD) cldcnt[n]++;
 358                         if (esid->portf == SELFID_PORT_CHILD) cldcnt[n]++;
 359                         if (esid->portg == SELFID_PORT_CHILD) cldcnt[n]++;
 360                         if (esid->porth == SELFID_PORT_CHILD) cldcnt[n]++;
 361                 } else {
 362                         if (sid->port0 == SELFID_PORT_CHILD) cldcnt[n]++;
 363                         if (sid->port1 == SELFID_PORT_CHILD) cldcnt[n]++;
 364                         if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++;
 365
 366                         speedcap[n] = sid->speed;
 367                         n--;
 368                 }
 369         }
 370
 371         /* set self mapping */
 372         for (i = 0; i < nodecount; i++) {
 373                 map[64*i + i] = speedcap[i];
 374         }
 375
 376         /* fix up direct children count to total children count;
 377          * also fix up speedcaps for sibling and parent communication */
 378         for (i = 1; i < nodecount; i++) {
 379                 for (j = cldcnt[i], n = i - 1; j > 0; j--) {
 380                         cldcnt[i] += cldcnt[n];
 381                         speedcap[n] = min(speedcap[n], speedcap[i]);
 382                         n -= cldcnt[n] + 1;
 383                 }
 384         }
 385
 386         for (n = 0; n < nodecount; n++) {
 387                 for (i = n - cldcnt[n]; i <= n; i++) {
 388                         for (j = 0; j < (n - cldcnt[n]); j++) {
 389                                 map[j*64 + i] = map[i*64 + j] =
 390                                         min(map[i*64 + j], speedcap[n]);
 391                         }
 392                         for (j = n + 1; j < nodecount; j++) {
 393                                 map[j*64 + i] = map[i*64 + j] =
 394                                         min(map[i*64 + j], speedcap[n]);
 395                         }
 396                 }
 397         }
 398
 399 #if SELFID_SPEED_UNKNOWN != IEEE1394_SPEED_MAX
 400         /* assume maximum speed for 1394b PHYs, nodemgr will correct it */
 401         for (n = 0; n < nodecount; n++)
 402                 if (speedcap[n] == SELFID_SPEED_UNKNOWN)
 403                         speedcap[n] = IEEE1394_SPEED_MAX;
 404 #endif
 405 }
 406
 407
 408 void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
 409 {
 410         if (host->in_bus_reset) {
 411                 HPSB_VERBOSE("Including SelfID 0x%x", sid);
 412                 host->topology_map[host->selfid_count++] = sid;
 413         } else {
 414                 HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
 415                             sid, NODEID_TO_BUS(host->node_id));
 416         }
 417 }
 418
 419 void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
 420 {
 421         if (!host->in_bus_reset)
 422                 HPSB_NOTICE("SelfID completion called outside of bus reset!");
 423
 424         host->node_id = LOCAL_BUS | phyid;
 425         host->is_root = isroot;
 426
 427         if (!check_selfids(host)) {
 428                 if (host->reset_retries++ < 20) {
 429                         /* selfid stage did not complete without error */
 430                         HPSB_NOTICE("Error in SelfID stage, resetting");
 431                         host->in_bus_reset = 0;
 432                         /* this should work from ohci1394 now... */
 433                         hpsb_reset_bus(host, LONG_RESET);
 434                         return;
 435                 } else {
 436                         HPSB_NOTICE("Stopping out-of-control reset loop");
 437                         HPSB_NOTICE("Warning - topology map and speed map will not be valid");
 438                         host->reset_retries = 0;
 439                 }
 440         } else {
 441                 host->reset_retries = 0;
 442                 build_speed_map(host, host->node_count);
 443         }
 444
 445         HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
 446                      "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
 447
 448         /* irm_id is kept up to date by check_selfids() */
 449         if (host->irm_id == host->node_id) {
 450                 host->is_irm = 1;
 451         } else {
 452                 host->is_busmgr = 0;
 453                 host->is_irm = 0;
 454         }
 455
 456         if (isroot) {
 457                 host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
 458                 host->is_cycmst = 1;
 459         }
 460         atomic_inc(&host->generation);
 461         host->in_bus_reset = 0;
 462         highlevel_host_reset(host);
 463 }
 464
 465
 466 void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
 467                       int ackcode)
 468 {
 469         unsigned long flags;
 470
 471         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 472
 473         packet->ack_code = ackcode;
 474
 475         if (packet->no_waiter || packet->state == hpsb_complete) {
 476                 /* if packet->no_waiter, must not have a tlabel allocated */
 477                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 478                 hpsb_free_packet(packet);
 479                 return;
 480         }
 481
 482         atomic_dec(&packet->refcnt);    /* drop HC's reference */
 483         /* here the packet must be on the host->pending_packet_queue */
 484
 485         if (ackcode != ACK_PENDING || !packet->expect_response) {
 486                 packet->state = hpsb_complete;
 487                 __skb_unlink(packet->skb, &host->pending_packet_queue);
 488                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 489                 queue_packet_complete(packet);
 490                 return;
 491         }
 492
 493         packet->state = hpsb_pending;
 494         packet->sendtime = jiffies;
 495
 496         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 497
 498         mod_timer(&host->timeout, jiffies + host->timeout_interval);
 499 }
 500
 501 /**
 502  * hpsb_send_phy_config - transmit a PHY configuration packet on the bus
 503  * @host: host that PHY config packet gets sent through
 504  * @rootid: root whose force_root bit should get set (-1 = don't set force_root)
 505  * @gapcnt: gap count value to set (-1 = don't set gap count)
 506  *
 507  * This function sends a PHY config packet on the bus through the specified host.
 508  *
 509  * Return value: 0 for success or error number otherwise.
 510  */
 511 int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
 512 {
 513         struct hpsb_packet *packet;
 514         quadlet_t d = 0;
 515         int retval = 0;
 516
 517         if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
 518            (rootid == -1 && gapcnt == -1)) {
 519                 HPSB_DEBUG("Invalid Parameter: rootid = %d   gapcnt = %d",
 520                            rootid, gapcnt);
 521                 return -EINVAL;
 522         }
 523
 524         if (rootid != -1)
 525                 d |= PHYPACKET_PHYCONFIG_R | rootid << PHYPACKET_PORT_SHIFT;
 526         if (gapcnt != -1)
 527                 d |= PHYPACKET_PHYCONFIG_T | gapcnt << PHYPACKET_GAPCOUNT_SHIFT;
 528
 529         packet = hpsb_make_phypacket(host, d);
 530         if (!packet)
 531                 return -ENOMEM;
 532
 533         packet->generation = get_hpsb_generation(host);
 534         retval = hpsb_send_packet_and_wait(packet);
 535         hpsb_free_packet(packet);
 536
 537         return retval;
 538 }
 539
 540 /**
 541  * hpsb_send_packet - transmit a packet on the bus
 542  * @packet: packet to send
 543  *
 544  * The packet is sent through the host specified in the packet->host field.
 545  * Before sending, the packet's transmit speed is automatically determined
 546  * using the local speed map when it is an async, non-broadcast packet.
 547  *
 548  * Possibilities for failure are that host is either not initialized, in bus
 549  * reset, the packet's generation number doesn't match the current generation
 550  * number or the host reports a transmit error.
 551  *
 552  * Return value: 0 on success, negative errno on failure.
 553  */
 554 int hpsb_send_packet(struct hpsb_packet *packet)
 555 {
 556         struct hpsb_host *host = packet->host;
 557
 558         if (host->is_shutdown)
 559                 return -EINVAL;
 560         if (host->in_bus_reset ||
 561             (packet->generation != get_hpsb_generation(host)))
 562                 return -EAGAIN;
 563
 564         packet->state = hpsb_queued;
 565
 566         /* This just seems silly to me */
 567         WARN_ON(packet->no_waiter && packet->expect_response);
 568
 569         if (!packet->no_waiter || packet->expect_response) {
 570                 atomic_inc(&packet->refcnt);
 571                 /* Set the initial "sendtime" to 10 seconds from now, to
 572                    prevent premature expiry.  If a packet takes more than
 573                    10 seconds to hit the wire, we have bigger problems :) */
 574                 packet->sendtime = jiffies + 10 * HZ;
 575                 skb_queue_tail(&host->pending_packet_queue, packet->skb);
 576         }
 577
 578         if (packet->node_id == host->node_id) {
 579                 /* it is a local request, so handle it locally */
 580
 581                 quadlet_t *data;
 582                 size_t size = packet->data_size + packet->header_size;
 583
 584                 data = kmalloc(size, GFP_ATOMIC);
 585                 if (!data) {
 586                         HPSB_ERR("unable to allocate memory for concatenating header and data");
 587                         return -ENOMEM;
 588                 }
 589
 590                 memcpy(data, packet->header, packet->header_size);
 591
 592                 if (packet->data_size)
 593                         memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size);
 594
 595                 dump_packet("send packet local", packet->header, packet->header_size, -1);
 596
 597                 hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
 598                 hpsb_packet_received(host, data, size, 0);
 599
 600                 kfree(data);
 601
 602                 return 0;
 603         }
 604
 605         if (packet->type == hpsb_async &&
 606             NODEID_TO_NODE(packet->node_id) != ALL_NODES)
 607                 packet->speed_code =
 608                         host->speed[NODEID_TO_NODE(packet->node_id)];
 609
 610         dump_packet("send packet", packet->header, packet->header_size, packet->speed_code);
 611
 612         return host->driver->transmit_packet(host, packet);
 613 }
 614
 615 /* We could just use complete() directly as the packet complete
 616  * callback, but this is more typesafe, in the sense that we get a
 617  * compiler error if the prototype for complete() changes. */
 618
 619 static void complete_packet(void *data)
 620 {
 621         complete((struct completion *) data);
 622 }
 623
 624 int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
 625 {
 626         struct completion done;
 627         int retval;
 628
 629         init_completion(&done);
 630         hpsb_set_packet_complete_task(packet, complete_packet, &done);
 631         retval = hpsb_send_packet(packet);
 632         if (retval == 0)
 633                 wait_for_completion(&done);
 634
 635         return retval;
 636 }
 637
 638 static void send_packet_nocare(struct hpsb_packet *packet)
 639 {
 640         if (hpsb_send_packet(packet) < 0) {
 641                 hpsb_free_packet(packet);
 642         }
 643 }
 644
 645
 646 static void handle_packet_response(struct hpsb_host *host, int tcode,
 647                                    quadlet_t *data, size_t size)
 648 {
 649         struct hpsb_packet *packet = NULL;
 650         struct sk_buff *skb;
 651         int tcode_match = 0;
 652         int tlabel;
 653         unsigned long flags;
 654
 655         tlabel = (data[0] >> 10) & 0x3f;
 656
 657         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
 658
 659         skb_queue_walk(&host->pending_packet_queue, skb) {
 660                 packet = (struct hpsb_packet *)skb->data;
 661                 if ((packet->tlabel == tlabel)
 662                     && (packet->node_id == (data[1] >> 16))){
 663                         break;
 664                 }
 665
 666                 packet = NULL;
 667         }
 668
 669         if (packet == NULL) {
 670                 HPSB_DEBUG("unsolicited response packet received - no tlabel match");
 671                 dump_packet("contents", data, 16, -1);
 672                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 673                 return;
 674         }
 675
 676         switch (packet->tcode) {
 677         case TCODE_WRITEQ:
 678         case TCODE_WRITEB:
 679                 if (tcode != TCODE_WRITE_RESPONSE)
 680                         break;
 681                 tcode_match = 1;
 682                 memcpy(packet->header, data, 12);
 683                 break;
 684         case TCODE_READQ:
 685                 if (tcode != TCODE_READQ_RESPONSE)
 686                         break;
 687                 tcode_match = 1;
 688                 memcpy(packet->header, data, 16);
 689                 break;
 690         case TCODE_READB:
 691                 if (tcode != TCODE_READB_RESPONSE)
 692                         break;
 693                 tcode_match = 1;
 694                 BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
 695                 memcpy(packet->header, data, 16);
 696                 memcpy(packet->data, data + 4, size - 16);
 697                 break;
 698         case TCODE_LOCK_REQUEST:
 699                 if (tcode != TCODE_LOCK_RESPONSE)
 700                         break;
 701                 tcode_match = 1;
 702                 size = min((size - 16), (size_t)8);
 703                 BUG_ON(packet->skb->len - sizeof(*packet) < size);
 704                 memcpy(packet->header, data, 16);
 705                 memcpy(packet->data, data + 4, size);
 706                 break;
 707         }
 708
 709         if (!tcode_match) {
 710                 spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 711                 HPSB_INFO("unsolicited response packet received - tcode mismatch");
 712                 dump_packet("contents", data, 16, -1);
 713                 return;
 714         }
 715
 716         __skb_unlink(skb, &host->pending_packet_queue);
 717
 718         if (packet->state == hpsb_queued) {
 719                 packet->sendtime = jiffies;
 720                 packet->ack_code = ACK_PENDING;
 721         }
 722
 723         packet->state = hpsb_complete;
 724         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
 725
 726         queue_packet_complete(packet);
 727 }
 728
 729
 730 static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
 731                                                quadlet_t *data, size_t dsize)
 732 {
 733         struct hpsb_packet *p;
 734
 735         p = hpsb_alloc_packet(dsize);
 736         if (unlikely(p == NULL)) {
 737                 /* FIXME - send data_error response */
 738                 return NULL;
 739         }
 740
 741         p->type = hpsb_async;
 742         p->state = hpsb_unused;
 743         p->host = host;
 744         p->node_id = data[1] >> 16;
 745         p->tlabel = (data[0] >> 10) & 0x3f;
 746         p->no_waiter = 1;
 747
 748         p->generation = get_hpsb_generation(host);
 749
 750         if (dsize % 4)
 751                 p->data[dsize / 4] = 0;
 752
 753         return p;
 754 }
 755
 756 #define PREP_ASYNC_HEAD_RCODE(tc) \
 757         packet->tcode = tc; \
 758         packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \
 759                 | (1 << 8) | (tc << 4); \
 760         packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \
 761         packet->header[2] = 0
 762
 763 static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
 764                               quadlet_t data)
 765 {
 766         PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
 767         packet->header[3] = data;
 768         packet->header_size = 16;
 769         packet->data_size = 0;
 770 }
 771
 772 static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
 773                                int length)
 774 {
 775         if (rcode != RCODE_COMPLETE)
 776                 length = 0;
 777
 778         PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE);
 779         packet->header[3] = length << 16;
 780         packet->header_size = 16;
 781         packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0);
 782 }
 783
 784 static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
 785 {
 786         PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE);
 787         packet->header[2] = 0;
 788         packet->header_size = 12;
 789         packet->data_size = 0;
 790 }
 791
 792 static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
 793                           int length)
 794 {
 795         if (rcode != RCODE_COMPLETE)
 796                 length = 0;
 797
 798         PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE);
 799         packet->header[3] = (length << 16) | extcode;
 800         packet->header_size = 16;
 801         packet->data_size = length;
 802 }
 803
 804 #define PREP_REPLY_PACKET(length) \
 805                 packet = create_reply_packet(host, data, length); \
 806                 if (packet == NULL) break
 807
 808 static void handle_incoming_packet(struct hpsb_host *host, int tcode,
 809                                    quadlet_t *data, size_t size, int write_acked)
 810 {
 811         struct hpsb_packet *packet;
 812         int length, rcode, extcode;
 813         quadlet_t buffer;
 814         nodeid_t source = data[1] >> 16;
 815         nodeid_t dest = data[0] >> 16;
 816         u16 flags = (u16) data[0];
 817         u64 addr;
 818
 819         /* big FIXME - no error checking is done for an out of bounds length */
 820
 821         switch (tcode) {
 822         case TCODE_WRITEQ:
 823                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 824                 rcode = highlevel_write(host, source, dest, data+3,
 825                                         addr, 4, flags);
 826
 827                 if (!write_acked
 828                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 829                     && (rcode >= 0)) {
 830                         /* not a broadcast write, reply */
 831                         PREP_REPLY_PACKET(0);
 832                         fill_async_write_resp(packet, rcode);
 833                         send_packet_nocare(packet);
 834                 }
 835                 break;
 836
 837         case TCODE_WRITEB:
 838                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 839                 rcode = highlevel_write(host, source, dest, data+4,
 840                                         addr, data[3]>>16, flags);
 841
 842                 if (!write_acked
 843                     && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
 844                     && (rcode >= 0)) {
 845                         /* not a broadcast write, reply */
 846                         PREP_REPLY_PACKET(0);
 847                         fill_async_write_resp(packet, rcode);
 848                         send_packet_nocare(packet);
 849                 }
 850                 break;
 851
 852         case TCODE_READQ:
 853                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 854                 rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
 855
 856                 if (rcode >= 0) {
 857                         PREP_REPLY_PACKET(0);
 858                         fill_async_readquad_resp(packet, rcode, buffer);
 859                         send_packet_nocare(packet);
 860                 }
 861                 break;
 862
 863         case TCODE_READB:
 864                 length = data[3] >> 16;
 865                 PREP_REPLY_PACKET(length);
 866
 867                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 868                 rcode = highlevel_read(host, source, packet->data, addr,
 869                                        length, flags);
 870
 871                 if (rcode >= 0) {
 872                         fill_async_readblock_resp(packet, rcode, length);
 873                         send_packet_nocare(packet);
 874                 } else {
 875                         hpsb_free_packet(packet);
 876                 }
 877                 break;
 878
 879         case TCODE_LOCK_REQUEST:
 880                 length = data[3] >> 16;
 881                 extcode = data[3] & 0xffff;
 882                 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
 883
 884                 PREP_REPLY_PACKET(8);
 885
 886                 if ((extcode == 0) || (extcode >= 7)) {
 887                         /* let switch default handle error */
 888                         length = 0;
 889                 }
 890
 891                 switch (length) {
 892                 case 4:
 893                         rcode = highlevel_lock(host, source, packet->data, addr,
 894                                                data[4], 0, extcode,flags);
 895                         fill_async_lock_resp(packet, rcode, extcode, 4);
 896                         break;
 897                 case 8:
 898                         if ((extcode != EXTCODE_FETCH_ADD)
 899                             && (extcode != EXTCODE_LITTLE_ADD)) {
 900                                 rcode = highlevel_lock(host, source,
 901                                                        packet->data, addr,
 902                                                        data[5], data[4],
 903                                                        extcode, flags);
 904                                 fill_async_lock_resp(packet, rcode, extcode, 4);
 905                         } else {
 906                                 rcode = highlevel_lock64(host, source,
 907                                              (octlet_t *)packet->data, addr,
 908                                              *(octlet_t *)(data + 4), 0ULL,
 909                                              extcode, flags);
 910                                 fill_async_lock_resp(packet, rcode, extcode, 8);
 911                         }
 912                         break;
 913                 case 16:
 914                         rcode = highlevel_lock64(host, source,
 915                                                  (octlet_t *)packet->data, addr,
 916                                                  *(octlet_t *)(data + 6),
 917                                                  *(octlet_t *)(data + 4),
 918                                                  extcode, flags);
 919                         fill_async_lock_resp(packet, rcode, extcode, 8);
 920                         break;
 921                 default:
 922                         rcode = RCODE_TYPE_ERROR;
 923                         fill_async_lock_resp(packet, rcode,
 924                                              extcode, 0);
 925                 }
 926
 927                 if (rcode >= 0) {
 928                         send_packet_nocare(packet);
 929                 } else {
 930                         hpsb_free_packet(packet);
 931                 }
 932                 break;
 933         }
 934
 935 }
 936 #undef PREP_REPLY_PACKET
 937
 938
 939 void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
 940                           int write_acked)
 941 {
 942         int tcode;
 943
 944         if (host->in_bus_reset) {
 945                 HPSB_INFO("received packet during reset; ignoring");
 946                 return;
 947         }
 948
 949         dump_packet("received packet", data, size, -1);
 950
 951         tcode = (data[0] >> 4) & 0xf;
 952
 953         switch (tcode) {
 954         case TCODE_WRITE_RESPONSE:
 955         case TCODE_READQ_RESPONSE:
 956         case TCODE_READB_RESPONSE:
 957         case TCODE_LOCK_RESPONSE:
 958                 handle_packet_response(host, tcode, data, size);
 959                 break;
 960
 961         case TCODE_WRITEQ:
 962         case TCODE_WRITEB:
 963         case TCODE_READQ:
 964         case TCODE_READB:
 965         case TCODE_LOCK_REQUEST:
 966                 handle_incoming_packet(host, tcode, data, size, write_acked);
 967                 break;
 968
 969
 970         case TCODE_ISO_DATA:
 971                 highlevel_iso_receive(host, data, size);
 972                 break;
 973
 974         case TCODE_CYCLE_START:
 975                 /* simply ignore this packet if it is passed on */
 976                 break;
 977
 978         default:
 979                 HPSB_NOTICE("received packet with bogus transaction code %d",
 980                             tcode);
 981                 break;
 982         }
 983 }
 984
 985
 986 static void abort_requests(struct hpsb_host *host)
 987 {
 988         struct hpsb_packet *packet;
 989         struct sk_buff *skb;
 990
 991         host->driver->devctl(host, CANCEL_REQUESTS, 0);
 992
 993         while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) {
 994                 packet = (struct hpsb_packet *)skb->data;
 995
 996                 packet->state = hpsb_complete;
 997                 packet->ack_code = ACKX_ABORTED;
 998                 queue_packet_complete(packet);
 999         }
1000 }
1001
1002 void abort_timedouts(unsigned long __opaque)
1003 {
1004         struct hpsb_host *host = (struct hpsb_host *)__opaque;
1005         unsigned long flags;
1006         struct hpsb_packet *packet;
1007         struct sk_buff *skb;
1008         unsigned long expire;
1009
1010         spin_lock_irqsave(&host->csr.lock, flags);
1011         expire = host->csr.expire;
1012         spin_unlock_irqrestore(&host->csr.lock, flags);
1013
1014         /* Hold the lock around this, since we aren't dequeuing all
1015          * packets, just ones we need. */
1016         spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
1017
1018         while (!skb_queue_empty(&host->pending_packet_queue)) {
1019                 skb = skb_peek(&host->pending_packet_queue);
1020
1021                 packet = (struct hpsb_packet *)skb->data;
1022
1023                 if (time_before(packet->sendtime + expire, jiffies)) {
1024                         __skb_unlink(skb, &host->pending_packet_queue);
1025                         packet->state = hpsb_complete;
1026                         packet->ack_code = ACKX_TIMEOUT;
1027                         queue_packet_complete(packet);
1028                 } else {
1029                         /* Since packets are added to the tail, the oldest
1030                          * ones are first, always. When we get to one that
1031                          * isn't timed out, the rest aren't either. */
1032                         break;
1033                 }
1034         }
1035
1036         if (!skb_queue_empty(&host->pending_packet_queue))
1037                 mod_timer(&host->timeout, jiffies + host->timeout_interval);
1038
1039         spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
1040 }
1041
1042
1043 /* Kernel thread and vars, which handles packets that are completed. Only
1044  * packets that have a "complete" function are sent here. This way, the
1045  * completion is run out of kernel context, and doesn't block the rest of
1046  * the stack. */
1047 static struct task_struct *khpsbpkt_thread;
1048 static struct sk_buff_head hpsbpkt_queue;
1049
1050 static void queue_packet_complete(struct hpsb_packet *packet)
1051 {
1052         if (packet->no_waiter) {
1053                 hpsb_free_packet(packet);
1054                 return;
1055         }
1056         if (packet->complete_routine != NULL) {
1057                 skb_queue_tail(&hpsbpkt_queue, packet->skb);
1058                 wake_up_process(khpsbpkt_thread);
1059         }
1060         return;
1061 }
1062
1063 static int hpsbpkt_thread(void *__hi)
1064 {
1065         struct sk_buff *skb;
1066         struct hpsb_packet *packet;
1067         void (*complete_routine)(void*);
1068         void *complete_data;
1069
1070         current->flags |= PF_NOFREEZE;
1071
1072         while (!kthread_should_stop()) {
1073                 while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) {
1074                         packet = (struct hpsb_packet *)skb->data;
1075
1076                         complete_routine = packet->complete_routine;
1077                         complete_data = packet->complete_data;
1078
1079                         packet->complete_routine = packet->complete_data = NULL;
1080
1081                         complete_routine(complete_data);
1082                 }
1083
1084                 set_current_state(TASK_INTERRUPTIBLE);
1085                 if (!skb_peek(&hpsbpkt_queue))
1086                         schedule();
1087                 __set_current_state(TASK_RUNNING);
1088         }
1089         return 0;
1090 }
1091
1092 static int __init ieee1394_init(void)
1093 {
1094         int i, ret;
1095
1096         skb_queue_head_init(&hpsbpkt_queue);
1097
1098         /* non-fatal error */
1099         if (hpsb_init_config_roms()) {
1100                 HPSB_ERR("Failed to initialize some config rom entries.\n");
1101                 HPSB_ERR("Some features may not be available\n");
1102         }
1103
1104         khpsbpkt_thread = kthread_run(hpsbpkt_thread, NULL, "khpsbpkt");
1105         if (IS_ERR(khpsbpkt_thread)) {
1106                 HPSB_ERR("Failed to start hpsbpkt thread!\n");
1107                 ret = PTR_ERR(khpsbpkt_thread);
1108                 goto exit_cleanup_config_roms;
1109         }
1110
1111         if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) {
1112                 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR);
1113                 ret = -ENODEV;
1114                 goto exit_release_kernel_thread;
1115         }
1116
1117         ret = bus_register(&ieee1394_bus_type);
1118         if (ret < 0) {
1119                 HPSB_INFO("bus register failed");
1120                 goto release_chrdev;
1121         }
1122
1123         for (i = 0; fw_bus_attrs[i]; i++) {
1124                 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1125                 if (ret < 0) {
1126                         while (i >= 0) {
1127                                 bus_remove_file(&ieee1394_bus_type,
1128                                                 fw_bus_attrs[i--]);
1129                         }
1130                         bus_unregister(&ieee1394_bus_type);
1131                         goto release_chrdev;
1132                 }
1133         }
1134
1135         ret = class_register(&hpsb_host_class);
1136         if (ret < 0)
1137                 goto release_all_bus;
1138
1139         hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol");
1140         if (IS_ERR(hpsb_protocol_class)) {
1141                 ret = PTR_ERR(hpsb_protocol_class);
1142                 goto release_class_host;
1143         }
1144
1145         ret = init_csr();
1146         if (ret) {
1147                 HPSB_INFO("init csr failed");
1148                 ret = -ENOMEM;
1149                 goto release_class_protocol;
1150         }
1151
1152         if (disable_nodemgr) {
1153                 HPSB_INFO("nodemgr and IRM functionality disabled");
1154                 /* We shouldn't contend for IRM with nodemgr disabled, since
1155                    nodemgr implements functionality required of ieee1394a-2000
1156                    IRMs */
1157                 hpsb_disable_irm = 1;
1158
1159                 return 0;
1160         }
1161
1162         if (hpsb_disable_irm) {
1163                 HPSB_INFO("IRM functionality disabled");
1164         }
1165
1166         ret = init_ieee1394_nodemgr();
1167         if (ret < 0) {
1168                 HPSB_INFO("init nodemgr failed");
1169                 goto cleanup_csr;
1170         }
1171
1172         return 0;
1173
1174 cleanup_csr:
1175         cleanup_csr();
1176 release_class_protocol:
1177         class_destroy(hpsb_protocol_class);
1178 release_class_host:
1179         class_unregister(&hpsb_host_class);
1180 release_all_bus:
1181         for (i = 0; fw_bus_attrs[i]; i++)
1182                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1183         bus_unregister(&ieee1394_bus_type);
1184 release_chrdev:
1185         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1186 exit_release_kernel_thread:
1187         kthread_stop(khpsbpkt_thread);
1188 exit_cleanup_config_roms:
1189         hpsb_cleanup_config_roms();
1190         return ret;
1191 }
1192
1193 static void __exit ieee1394_cleanup(void)
1194 {
1195         int i;
1196
1197         if (!disable_nodemgr)
1198                 cleanup_ieee1394_nodemgr();
1199
1200         cleanup_csr();
1201
1202         class_destroy(hpsb_protocol_class);
1203         class_unregister(&hpsb_host_class);
1204         for (i = 0; fw_bus_attrs[i]; i++)
1205                 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]);
1206         bus_unregister(&ieee1394_bus_type);
1207
1208         kthread_stop(khpsbpkt_thread);
1209
1210         hpsb_cleanup_config_roms();
1211
1212         unregister_chrdev_region(IEEE1394_CORE_DEV, 256);
1213 }
1214
1215 fs_initcall(ieee1394_init); /* same as ohci1394 */
1216 module_exit(ieee1394_cleanup);
1217
1218 /* Exported symbols */
1219
1220 /** hosts.c **/
1221 EXPORT_SYMBOL(hpsb_alloc_host);
1222 EXPORT_SYMBOL(hpsb_add_host);
1223 EXPORT_SYMBOL(hpsb_resume_host);
1224 EXPORT_SYMBOL(hpsb_remove_host);
1225 EXPORT_SYMBOL(hpsb_update_config_rom_image);
1226
1227 /** ieee1394_core.c **/
1228 EXPORT_SYMBOL(hpsb_speedto_str);
1229 EXPORT_SYMBOL(hpsb_protocol_class);
1230 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
1231 EXPORT_SYMBOL(hpsb_alloc_packet);
1232 EXPORT_SYMBOL(hpsb_free_packet);
1233 EXPORT_SYMBOL(hpsb_send_packet);
1234 EXPORT_SYMBOL(hpsb_reset_bus);
1235 EXPORT_SYMBOL(hpsb_read_cycle_timer);
1236 EXPORT_SYMBOL(hpsb_bus_reset);
1237 EXPORT_SYMBOL(hpsb_selfid_received);
1238 EXPORT_SYMBOL(hpsb_selfid_complete);
1239 EXPORT_SYMBOL(hpsb_packet_sent);
1240 EXPORT_SYMBOL(hpsb_packet_received);
1241 EXPORT_SYMBOL_GPL(hpsb_disable_irm);
1242
1243 /** ieee1394_transactions.c **/
1244 EXPORT_SYMBOL(hpsb_get_tlabel);
1245 EXPORT_SYMBOL(hpsb_free_tlabel);
1246 EXPORT_SYMBOL(hpsb_make_readpacket);
1247 EXPORT_SYMBOL(hpsb_make_writepacket);
1248 EXPORT_SYMBOL(hpsb_make_streampacket);
1249 EXPORT_SYMBOL(hpsb_make_lockpacket);
1250 EXPORT_SYMBOL(hpsb_make_lock64packet);
1251 EXPORT_SYMBOL(hpsb_make_phypacket);
1252 EXPORT_SYMBOL(hpsb_make_isopacket);
1253 EXPORT_SYMBOL(hpsb_read);
1254 EXPORT_SYMBOL(hpsb_write);
1255 EXPORT_SYMBOL(hpsb_packet_success);
1256
1257 /** highlevel.c **/
1258 EXPORT_SYMBOL(hpsb_register_highlevel);
1259 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1260 EXPORT_SYMBOL(hpsb_register_addrspace);
1261 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1262 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1263 EXPORT_SYMBOL(hpsb_listen_channel);
1264 EXPORT_SYMBOL(hpsb_unlisten_channel);
1265 EXPORT_SYMBOL(hpsb_get_hostinfo);
1266 EXPORT_SYMBOL(hpsb_create_hostinfo);
1267 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1268 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1269 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1270 EXPORT_SYMBOL(hpsb_set_hostinfo);
1271 EXPORT_SYMBOL(highlevel_host_reset);
1272
1273 /** nodemgr.c **/
1274 EXPORT_SYMBOL(hpsb_node_fill_packet);
1275 EXPORT_SYMBOL(hpsb_node_write);
1276 EXPORT_SYMBOL(__hpsb_register_protocol);
1277 EXPORT_SYMBOL(hpsb_unregister_protocol);
1278
1279 /** csr.c **/
1280 EXPORT_SYMBOL(hpsb_update_config_rom);
1281
1282 /** dma.c **/
1283 EXPORT_SYMBOL(dma_prog_region_init);
1284 EXPORT_SYMBOL(dma_prog_region_alloc);
1285 EXPORT_SYMBOL(dma_prog_region_free);
1286 EXPORT_SYMBOL(dma_region_init);
1287 EXPORT_SYMBOL(dma_region_alloc);
1288 EXPORT_SYMBOL(dma_region_free);
1289 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1290 EXPORT_SYMBOL(dma_region_sync_for_device);
1291 EXPORT_SYMBOL(dma_region_mmap);
1292 EXPORT_SYMBOL(dma_region_offset_to_bus);
1293
1294 /** iso.c **/
1295 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1296 EXPORT_SYMBOL(hpsb_iso_recv_init);
1297 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1298 EXPORT_SYMBOL(hpsb_iso_recv_start);
1299 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1300 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1301 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1302 EXPORT_SYMBOL(hpsb_iso_stop);
1303 EXPORT_SYMBOL(hpsb_iso_shutdown);
1304 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1305 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1306 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1307 EXPORT_SYMBOL(hpsb_iso_n_ready);
1308 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1309 EXPORT_SYMBOL(hpsb_iso_packet_received);
1310 EXPORT_SYMBOL(hpsb_iso_wake);
1311 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1312
1313 /** csr1212.c **/
1314 EXPORT_SYMBOL(csr1212_new_directory);
1315 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1316 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1317 EXPORT_SYMBOL(csr1212_release_keyval);
1318 EXPORT_SYMBOL(csr1212_read);
1319 EXPORT_SYMBOL(csr1212_parse_keyval);
1320 EXPORT_SYMBOL(_csr1212_read_keyval);
1321 EXPORT_SYMBOL(_csr1212_destroy_keyval);