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 */ 57static int disable_nodemgr; 58module_param(disable_nodemgr, int, 0444); 59MODULE_PARM_DESC(disable_nodemgr, "Disable nodemgr functionality."); 60 61/* Disable Isochronous Resource Manager functionality */ 62int hpsb_disable_irm = 0; 63module_param_named(disable_irm, hpsb_disable_irm, bool, 0444); 64MODULE_PARM_DESC(disable_irm, 65 "Disable Isochronous Resource Manager functionality."); 66 67/* We are GPL, so treat us special */ 68MODULE_LICENSE("GPL"); 69 70/* Some globals used */ 71const char *hpsb_speedto_str[] = { "S100", "S200", "S400", "S800", "S1600", "S3200" }; 72struct class *hpsb_protocol_class; 73 74#ifdef CONFIG_IEEE1394_VERBOSEDEBUG 75static 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 94static void abort_requests(struct hpsb_host *host); 95static 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 */ 109void 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 */ 138struct 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 */ 167void 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 */ 183int 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 */ 206int 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 */ 241int 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 */ 267static 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 336static 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 u8 local_link_speed = host->csr.lnk_spd; 342 struct selfid *sid; 343 struct ext_selfid *esid; 344 int i, j, n; 345 346 for (i = 0; i < (nodecount * 64); i += 64) { 347 for (j = 0; j < nodecount; j++) { 348 map[i+j] = IEEE1394_SPEED_MAX; 349 } 350 } 351 352 for (i = 0; i < nodecount; i++) { 353 cldcnt[i] = 0; 354 } 355 356 /* find direct children count and speed */ 357 for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1], 358 n = nodecount - 1; 359 (void *)sid >= (void *)host->topology_map; sid--) { 360 if (sid->extended) { 361 esid = (struct ext_selfid *)sid; 362 363 if (esid->porta == SELFID_PORT_CHILD) cldcnt[n]++; 364 if (esid->portb == SELFID_PORT_CHILD) cldcnt[n]++; 365 if (esid->portc == SELFID_PORT_CHILD) cldcnt[n]++; 366 if (esid->portd == SELFID_PORT_CHILD) cldcnt[n]++; 367 if (esid->porte == SELFID_PORT_CHILD) cldcnt[n]++; 368 if (esid->portf == SELFID_PORT_CHILD) cldcnt[n]++; 369 if (esid->portg == SELFID_PORT_CHILD) cldcnt[n]++; 370 if (esid->porth == SELFID_PORT_CHILD) cldcnt[n]++; 371 } else { 372 if (sid->port0 == SELFID_PORT_CHILD) cldcnt[n]++; 373 if (sid->port1 == SELFID_PORT_CHILD) cldcnt[n]++; 374 if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++; 375 376 speedcap[n] = sid->speed; 377 if (speedcap[n] > local_link_speed) 378 speedcap[n] = local_link_speed; 379 n--; 380 } 381 } 382 383 /* set self mapping */ 384 for (i = 0; i < nodecount; i++) { 385 map[64*i + i] = speedcap[i]; 386 } 387 388 /* fix up direct children count to total children count; 389 * also fix up speedcaps for sibling and parent communication */ 390 for (i = 1; i < nodecount; i++) { 391 for (j = cldcnt[i], n = i - 1; j > 0; j--) { 392 cldcnt[i] += cldcnt[n]; 393 speedcap[n] = min(speedcap[n], speedcap[i]); 394 n -= cldcnt[n] + 1; 395 } 396 } 397 398 for (n = 0; n < nodecount; n++) { 399 for (i = n - cldcnt[n]; i <= n; i++) { 400 for (j = 0; j < (n - cldcnt[n]); j++) { 401 map[j*64 + i] = map[i*64 + j] = 402 min(map[i*64 + j], speedcap[n]); 403 } 404 for (j = n + 1; j < nodecount; j++) { 405 map[j*64 + i] = map[i*64 + j] = 406 min(map[i*64 + j], speedcap[n]); 407 } 408 } 409 } 410 411 /* assume a maximum speed for 1394b PHYs, nodemgr will correct it */ 412 if (local_link_speed > SELFID_SPEED_UNKNOWN) 413 for (i = 0; i < nodecount; i++) 414 if (speedcap[i] == SELFID_SPEED_UNKNOWN) 415 speedcap[i] = local_link_speed; 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 */ 427void 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 */ 447void 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 493static 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 */ 505void 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 */ 551int 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 */ 594int 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 663static 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 */ 674int 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 688static void send_packet_nocare(struct hpsb_packet *packet) 689{ 690 if (hpsb_send_packet(packet) < 0) { 691 hpsb_free_packet(packet); 692 } 693} 694 695static 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 709static 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 730found: 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 773dequeue: 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 791static 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 HPSB_ERR("out of memory, cannot send response packet"); 799 return NULL; 800 } 801 802 p->type = hpsb_async; 803 p->state = hpsb_unused; 804 p->host = host; 805 p->node_id = data[1] >> 16; 806 p->tlabel = (data[0] >> 10) & 0x3f; 807 p->no_waiter = 1; 808 809 p->generation = get_hpsb_generation(host); 810 811 if (dsize % 4) 812 p->data[dsize / 4] = 0; 813 814 return p; 815} 816 817#define PREP_ASYNC_HEAD_RCODE(tc) \ 818 packet->tcode = tc; \ 819 packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \ 820 | (1 << 8) | (tc << 4); \ 821 packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \ 822 packet->header[2] = 0 823 824static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode, 825 quadlet_t data) 826{ 827 PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE); 828 packet->header[3] = data; 829 packet->header_size = 16; 830 packet->data_size = 0; 831} 832 833static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode, 834 int length) 835{ 836 if (rcode != RCODE_COMPLETE) 837 length = 0; 838 839 PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE); 840 packet->header[3] = length << 16; 841 packet->header_size = 16; 842 packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0); 843} 844 845static void fill_async_write_resp(struct hpsb_packet *packet, int rcode) 846{ 847 PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE); 848 packet->header_size = 12; 849 packet->data_size = 0; 850} 851 852static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode, 853 int length) 854{ 855 if (rcode != RCODE_COMPLETE) 856 length = 0; 857 858 PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE); 859 packet->header[3] = (length << 16) | extcode; 860 packet->header_size = 16; 861 packet->data_size = length; 862} 863 864static void handle_incoming_packet(struct hpsb_host *host, int tcode, 865 quadlet_t *data, size_t size, 866 int write_acked) 867{ 868 struct hpsb_packet *packet; 869 int length, rcode, extcode; 870 quadlet_t buffer; 871 nodeid_t source = data[1] >> 16; 872 nodeid_t dest = data[0] >> 16; 873 u16 flags = (u16) data[0]; 874 u64 addr; 875 876 877 switch (tcode) { 878 case TCODE_WRITEQ: 879 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; 880 rcode = highlevel_write(host, source, dest, data + 3, 881 addr, 4, flags); 882 goto handle_write_request; 883 884 case TCODE_WRITEB: 885 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; 886 rcode = highlevel_write(host, source, dest, data + 4, 887 addr, data[3] >> 16, flags); 888handle_write_request: 889 if (rcode < 0 || write_acked || 890 NODEID_TO_NODE(data[0] >> 16) == NODE_MASK) 891 return; 892 /* not a broadcast write, reply */ 893 packet = create_reply_packet(host, data, 0); 894 if (packet) { 895 fill_async_write_resp(packet, rcode); 896 send_packet_nocare(packet); 897 } 898 return; 899 900 case TCODE_READQ: 901 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; 902 rcode = highlevel_read(host, source, &buffer, addr, 4, flags); 903 if (rcode < 0) 904 return; 905 906 packet = create_reply_packet(host, data, 0); 907 if (packet) { 908 fill_async_readquad_resp(packet, rcode, buffer); 909 send_packet_nocare(packet); 910 } 911 return; 912 913 case TCODE_READB: 914 length = data[3] >> 16; 915 packet = create_reply_packet(host, data, length); 916 if (!packet) 917 return; 918 919 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; 920 rcode = highlevel_read(host, source, packet->data, addr, 921 length, flags); 922 if (rcode < 0) { 923 hpsb_free_packet(packet); 924 return; 925 } 926 fill_async_readblock_resp(packet, rcode, length); 927 send_packet_nocare(packet); 928 return; 929 930 case TCODE_LOCK_REQUEST: 931 length = data[3] >> 16; 932 extcode = data[3] & 0xffff; 933 addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; 934 935 packet = create_reply_packet(host, data, 8); 936 if (!packet) 937 return; 938 939 if (extcode == 0 || extcode >= 7) { 940 /* let switch default handle error */ 941 length = 0; 942 } 943 944 switch (length) { 945 case 4: 946 rcode = highlevel_lock(host, source, packet->data, addr, 947 data[4], 0, extcode, flags); 948 fill_async_lock_resp(packet, rcode, extcode, 4); 949 break; 950 case 8: 951 if (extcode != EXTCODE_FETCH_ADD && 952 extcode != EXTCODE_LITTLE_ADD) { 953 rcode = highlevel_lock(host, source, 954 packet->data, addr, 955 data[5], data[4], 956 extcode, flags); 957 fill_async_lock_resp(packet, rcode, extcode, 4); 958 } else { 959 rcode = highlevel_lock64(host, source, 960 (octlet_t *)packet->data, addr, 961 *(octlet_t *)(data + 4), 0ULL, 962 extcode, flags); 963 fill_async_lock_resp(packet, rcode, extcode, 8); 964 } 965 break; 966 case 16: 967 rcode = highlevel_lock64(host, source, 968 (octlet_t *)packet->data, addr, 969 *(octlet_t *)(data + 6), 970 *(octlet_t *)(data + 4), 971 extcode, flags); 972 fill_async_lock_resp(packet, rcode, extcode, 8); 973 break; 974 default: 975 rcode = RCODE_TYPE_ERROR; 976 fill_async_lock_resp(packet, rcode, extcode, 0); 977 } 978 979 if (rcode < 0) 980 hpsb_free_packet(packet); 981 else 982 send_packet_nocare(packet); 983 return; 984 } 985} 986 987/** 988 * hpsb_packet_received - hand over received packet to the core 989 * 990 * For host driver module usage. 991 * 992 * The contents of data are expected to be the full packet but with the CRCs 993 * left out (data block follows header immediately), with the header (i.e. the 994 * first four quadlets) in machine byte order and the data block in big endian. 995 * *@data can be safely overwritten after this call. 996 * 997 * If the packet is a write request, @write_acked is to be set to true if it was 998 * ack_complete'd already, false otherwise. This argument is ignored for any 999 * other packet type. 1000 */ 1001void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size, 1002 int write_acked) 1003{ 1004 int tcode; 1005 1006 if (unlikely(host->in_bus_reset)) { 1007 HPSB_DEBUG("received packet during reset; ignoring"); 1008 return; 1009 } 1010 1011 dump_packet("received packet", data, size, -1); 1012 1013 tcode = (data[0] >> 4) & 0xf; 1014 1015 switch (tcode) { 1016 case TCODE_WRITE_RESPONSE: 1017 case TCODE_READQ_RESPONSE: 1018 case TCODE_READB_RESPONSE: 1019 case TCODE_LOCK_RESPONSE: 1020 handle_packet_response(host, tcode, data, size); 1021 break; 1022 1023 case TCODE_WRITEQ: 1024 case TCODE_WRITEB: 1025 case TCODE_READQ: 1026 case TCODE_READB: 1027 case TCODE_LOCK_REQUEST: 1028 handle_incoming_packet(host, tcode, data, size, write_acked); 1029 break; 1030 1031 case TCODE_CYCLE_START: 1032 /* simply ignore this packet if it is passed on */ 1033 break; 1034 1035 default: 1036 HPSB_DEBUG("received packet with bogus transaction code %d", 1037 tcode); 1038 break; 1039 } 1040} 1041 1042static void abort_requests(struct hpsb_host *host) 1043{ 1044 struct hpsb_packet *packet, *p; 1045 struct list_head tmp; 1046 unsigned long flags; 1047 1048 host->driver->devctl(host, CANCEL_REQUESTS, 0); 1049 1050 INIT_LIST_HEAD(&tmp); 1051 spin_lock_irqsave(&pending_packets_lock, flags); 1052 list_splice_init(&host->pending_packets, &tmp); 1053 spin_unlock_irqrestore(&pending_packets_lock, flags); 1054 1055 list_for_each_entry_safe(packet, p, &tmp, queue) { 1056 list_del_init(&packet->queue); 1057 packet->state = hpsb_complete; 1058 packet->ack_code = ACKX_ABORTED; 1059 queue_packet_complete(packet); 1060 } 1061} 1062 1063void abort_timedouts(unsigned long __opaque) 1064{ 1065 struct hpsb_host *host = (struct hpsb_host *)__opaque; 1066 struct hpsb_packet *packet, *p; 1067 struct list_head tmp; 1068 unsigned long flags, expire, j; 1069 1070 spin_lock_irqsave(&host->csr.lock, flags); 1071 expire = host->csr.expire; 1072 spin_unlock_irqrestore(&host->csr.lock, flags); 1073 1074 j = jiffies; 1075 INIT_LIST_HEAD(&tmp); 1076 spin_lock_irqsave(&pending_packets_lock, flags); 1077 1078 list_for_each_entry_safe(packet, p, &host->pending_packets, queue) { 1079 if (time_before(packet->sendtime + expire, j)) 1080 list_move_tail(&packet->queue, &tmp); 1081 else 1082 /* Since packets are added to the tail, the oldest 1083 * ones are first, always. When we get to one that 1084 * isn't timed out, the rest aren't either. */ 1085 break; 1086 } 1087 if (!list_empty(&host->pending_packets)) 1088 mod_timer(&host->timeout, j + host->timeout_interval); 1089 1090 spin_unlock_irqrestore(&pending_packets_lock, flags); 1091 1092 list_for_each_entry_safe(packet, p, &tmp, queue) { 1093 list_del_init(&packet->queue); 1094 packet->state = hpsb_complete; 1095 packet->ack_code = ACKX_TIMEOUT; 1096 queue_packet_complete(packet); 1097 } 1098} 1099 1100static struct task_struct *khpsbpkt_thread; 1101static LIST_HEAD(hpsbpkt_queue); 1102 1103static void queue_packet_complete(struct hpsb_packet *packet) 1104{ 1105 unsigned long flags; 1106 1107 if (packet->no_waiter) { 1108 hpsb_free_packet(packet); 1109 return; 1110 } 1111 if (packet->complete_routine != NULL) { 1112 spin_lock_irqsave(&pending_packets_lock, flags); 1113 list_add_tail(&packet->queue, &hpsbpkt_queue); 1114 spin_unlock_irqrestore(&pending_packets_lock, flags); 1115 wake_up_process(khpsbpkt_thread); 1116 } 1117 return; 1118} 1119 1120/* 1121 * Kernel thread which handles packets that are completed. This way the 1122 * packet's "complete" function is asynchronously run in process context. 1123 * Only packets which have a "complete" function may be sent here. 1124 */ 1125static int hpsbpkt_thread(void *__hi) 1126{ 1127 struct hpsb_packet *packet, *p; 1128 struct list_head tmp; 1129 int may_schedule; 1130 1131 while (!kthread_should_stop()) { 1132 1133 INIT_LIST_HEAD(&tmp); 1134 spin_lock_irq(&pending_packets_lock); 1135 list_splice_init(&hpsbpkt_queue, &tmp); 1136 spin_unlock_irq(&pending_packets_lock); 1137 1138 list_for_each_entry_safe(packet, p, &tmp, queue) { 1139 list_del_init(&packet->queue); 1140 packet->complete_routine(packet->complete_data); 1141 } 1142 1143 set_current_state(TASK_INTERRUPTIBLE); 1144 spin_lock_irq(&pending_packets_lock); 1145 may_schedule = list_empty(&hpsbpkt_queue); 1146 spin_unlock_irq(&pending_packets_lock); 1147 if (may_schedule) 1148 schedule(); 1149 __set_current_state(TASK_RUNNING); 1150 } 1151 return 0; 1152} 1153 1154static int __init ieee1394_init(void) 1155{ 1156 int i, ret; 1157 1158 /* non-fatal error */ 1159 if (hpsb_init_config_roms()) { 1160 HPSB_ERR("Failed to initialize some config rom entries.\n"); 1161 HPSB_ERR("Some features may not be available\n"); 1162 } 1163 1164 khpsbpkt_thread = kthread_run(hpsbpkt_thread, NULL, "khpsbpkt"); 1165 if (IS_ERR(khpsbpkt_thread)) { 1166 HPSB_ERR("Failed to start hpsbpkt thread!\n"); 1167 ret = PTR_ERR(khpsbpkt_thread); 1168 goto exit_cleanup_config_roms; 1169 } 1170 1171 if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) { 1172 HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR); 1173 ret = -ENODEV; 1174 goto exit_release_kernel_thread; 1175 } 1176 1177 ret = bus_register(&ieee1394_bus_type); 1178 if (ret < 0) { 1179 HPSB_INFO("bus register failed"); 1180 goto release_chrdev; 1181 } 1182 1183 for (i = 0; fw_bus_attrs[i]; i++) { 1184 ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]); 1185 if (ret < 0) { 1186 while (i >= 0) { 1187 bus_remove_file(&ieee1394_bus_type, 1188 fw_bus_attrs[i--]); 1189 } 1190 bus_unregister(&ieee1394_bus_type); 1191 goto release_chrdev; 1192 } 1193 } 1194 1195 ret = class_register(&hpsb_host_class); 1196 if (ret < 0) 1197 goto release_all_bus; 1198 1199 hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol"); 1200 if (IS_ERR(hpsb_protocol_class)) { 1201 ret = PTR_ERR(hpsb_protocol_class); 1202 goto release_class_host; 1203 } 1204 1205 ret = init_csr(); 1206 if (ret) { 1207 HPSB_INFO("init csr failed"); 1208 ret = -ENOMEM; 1209 goto release_class_protocol; 1210 } 1211 1212 if (disable_nodemgr) { 1213 HPSB_INFO("nodemgr and IRM functionality disabled"); 1214 /* We shouldn't contend for IRM with nodemgr disabled, since 1215 nodemgr implements functionality required of ieee1394a-2000 1216 IRMs */ 1217 hpsb_disable_irm = 1; 1218 1219 return 0; 1220 } 1221 1222 if (hpsb_disable_irm) { 1223 HPSB_INFO("IRM functionality disabled"); 1224 } 1225 1226 ret = init_ieee1394_nodemgr(); 1227 if (ret < 0) { 1228 HPSB_INFO("init nodemgr failed"); 1229 goto cleanup_csr; 1230 } 1231 1232 return 0; 1233 1234cleanup_csr: 1235 cleanup_csr(); 1236release_class_protocol: 1237 class_destroy(hpsb_protocol_class); 1238release_class_host: 1239 class_unregister(&hpsb_host_class); 1240release_all_bus: 1241 for (i = 0; fw_bus_attrs[i]; i++) 1242 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]); 1243 bus_unregister(&ieee1394_bus_type); 1244release_chrdev: 1245 unregister_chrdev_region(IEEE1394_CORE_DEV, 256); 1246exit_release_kernel_thread: 1247 kthread_stop(khpsbpkt_thread); 1248exit_cleanup_config_roms: 1249 hpsb_cleanup_config_roms(); 1250 return ret; 1251} 1252 1253static void __exit ieee1394_cleanup(void) 1254{ 1255 int i; 1256 1257 if (!disable_nodemgr) 1258 cleanup_ieee1394_nodemgr(); 1259 1260 cleanup_csr(); 1261 1262 class_destroy(hpsb_protocol_class); 1263 class_unregister(&hpsb_host_class); 1264 for (i = 0; fw_bus_attrs[i]; i++) 1265 bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]); 1266 bus_unregister(&ieee1394_bus_type); 1267 1268 kthread_stop(khpsbpkt_thread); 1269 1270 hpsb_cleanup_config_roms(); 1271 1272 unregister_chrdev_region(IEEE1394_CORE_DEV, 256); 1273} 1274 1275fs_initcall(ieee1394_init); 1276module_exit(ieee1394_cleanup); 1277 1278/* Exported symbols */ 1279 1280/** hosts.c **/ 1281EXPORT_SYMBOL(hpsb_alloc_host); 1282EXPORT_SYMBOL(hpsb_add_host); 1283EXPORT_SYMBOL(hpsb_resume_host); 1284EXPORT_SYMBOL(hpsb_remove_host); 1285EXPORT_SYMBOL(hpsb_update_config_rom_image); 1286 1287/** ieee1394_core.c **/ 1288EXPORT_SYMBOL(hpsb_speedto_str); 1289EXPORT_SYMBOL(hpsb_protocol_class); 1290EXPORT_SYMBOL(hpsb_set_packet_complete_task); 1291EXPORT_SYMBOL(hpsb_alloc_packet); 1292EXPORT_SYMBOL(hpsb_free_packet); 1293EXPORT_SYMBOL(hpsb_send_packet); 1294EXPORT_SYMBOL(hpsb_reset_bus); 1295EXPORT_SYMBOL(hpsb_read_cycle_timer); 1296EXPORT_SYMBOL(hpsb_bus_reset); 1297EXPORT_SYMBOL(hpsb_selfid_received); 1298EXPORT_SYMBOL(hpsb_selfid_complete); 1299EXPORT_SYMBOL(hpsb_packet_sent); 1300EXPORT_SYMBOL(hpsb_packet_received); 1301EXPORT_SYMBOL_GPL(hpsb_disable_irm); 1302 1303/** ieee1394_transactions.c **/ 1304EXPORT_SYMBOL(hpsb_get_tlabel); 1305EXPORT_SYMBOL(hpsb_free_tlabel); 1306EXPORT_SYMBOL(hpsb_make_readpacket); 1307EXPORT_SYMBOL(hpsb_make_writepacket); 1308EXPORT_SYMBOL(hpsb_make_streampacket); 1309EXPORT_SYMBOL(hpsb_make_lockpacket); 1310EXPORT_SYMBOL(hpsb_make_lock64packet); 1311EXPORT_SYMBOL(hpsb_make_phypacket); 1312EXPORT_SYMBOL(hpsb_read); 1313EXPORT_SYMBOL(hpsb_write); 1314EXPORT_SYMBOL(hpsb_lock); 1315EXPORT_SYMBOL(hpsb_packet_success); 1316 1317/** highlevel.c **/ 1318EXPORT_SYMBOL(hpsb_register_highlevel); 1319EXPORT_SYMBOL(hpsb_unregister_highlevel); 1320EXPORT_SYMBOL(hpsb_register_addrspace); 1321EXPORT_SYMBOL(hpsb_unregister_addrspace); 1322EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace); 1323EXPORT_SYMBOL(hpsb_get_hostinfo); 1324EXPORT_SYMBOL(hpsb_create_hostinfo); 1325EXPORT_SYMBOL(hpsb_destroy_hostinfo); 1326EXPORT_SYMBOL(hpsb_set_hostinfo_key); 1327EXPORT_SYMBOL(hpsb_get_hostinfo_bykey); 1328EXPORT_SYMBOL(hpsb_set_hostinfo); 1329 1330/** nodemgr.c **/ 1331EXPORT_SYMBOL(hpsb_node_fill_packet); 1332EXPORT_SYMBOL(hpsb_node_write); 1333EXPORT_SYMBOL(__hpsb_register_protocol); 1334EXPORT_SYMBOL(hpsb_unregister_protocol); 1335 1336/** csr.c **/ 1337EXPORT_SYMBOL(hpsb_update_config_rom); 1338 1339/** dma.c **/ 1340EXPORT_SYMBOL(dma_prog_region_init); 1341EXPORT_SYMBOL(dma_prog_region_alloc); 1342EXPORT_SYMBOL(dma_prog_region_free); 1343EXPORT_SYMBOL(dma_region_init); 1344EXPORT_SYMBOL(dma_region_alloc); 1345EXPORT_SYMBOL(dma_region_free); 1346EXPORT_SYMBOL(dma_region_sync_for_cpu); 1347EXPORT_SYMBOL(dma_region_sync_for_device); 1348EXPORT_SYMBOL(dma_region_mmap); 1349EXPORT_SYMBOL(dma_region_offset_to_bus); 1350 1351/** iso.c **/ 1352EXPORT_SYMBOL(hpsb_iso_xmit_init); 1353EXPORT_SYMBOL(hpsb_iso_recv_init); 1354EXPORT_SYMBOL(hpsb_iso_xmit_start); 1355EXPORT_SYMBOL(hpsb_iso_recv_start); 1356EXPORT_SYMBOL(hpsb_iso_recv_listen_channel); 1357EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel); 1358EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask); 1359EXPORT_SYMBOL(hpsb_iso_stop); 1360EXPORT_SYMBOL(hpsb_iso_shutdown); 1361EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet); 1362EXPORT_SYMBOL(hpsb_iso_xmit_sync); 1363EXPORT_SYMBOL(hpsb_iso_recv_release_packets); 1364EXPORT_SYMBOL(hpsb_iso_n_ready); 1365EXPORT_SYMBOL(hpsb_iso_packet_sent); 1366EXPORT_SYMBOL(hpsb_iso_packet_received); 1367EXPORT_SYMBOL(hpsb_iso_wake); 1368EXPORT_SYMBOL(hpsb_iso_recv_flush); 1369 1370/** csr1212.c **/ 1371EXPORT_SYMBOL(csr1212_attach_keyval_to_directory); 1372EXPORT_SYMBOL(csr1212_detach_keyval_from_directory); 1373EXPORT_SYMBOL(csr1212_get_keyval); 1374EXPORT_SYMBOL(csr1212_new_directory); 1375EXPORT_SYMBOL(csr1212_parse_keyval); 1376EXPORT_SYMBOL(csr1212_read); 1377EXPORT_SYMBOL(csr1212_release_keyval); 1378