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
dump_packet(const char * text,quadlet_t * data,int size,int speed)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 */
hpsb_set_packet_complete_task(struct hpsb_packet * packet,void (* routine)(void *),void * data)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 */
hpsb_alloc_packet(size_t data_size)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 */
hpsb_free_packet(struct hpsb_packet * packet)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 */
hpsb_reset_bus(struct hpsb_host * host,int type)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 */
hpsb_read_cycle_timer(struct hpsb_host * host,u32 * cycle_timer,u64 * local_time)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 */
hpsb_bus_reset(struct hpsb_host * host)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 */
check_selfids(struct hpsb_host * host)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
build_speed_map(struct hpsb_host * host,int nodecount)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 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 */
hpsb_selfid_received(struct hpsb_host * host,quadlet_t sid)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 */
hpsb_selfid_complete(struct hpsb_host * host,int phyid,int isroot)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 */
hpsb_packet_sent(struct hpsb_host * host,struct hpsb_packet * packet,int ackcode)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 */
hpsb_send_phy_config(struct hpsb_host * host,int rootid,int gapcnt)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 */
hpsb_send_packet(struct hpsb_packet * packet)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
complete_packet(void * data)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 */
hpsb_send_packet_and_wait(struct hpsb_packet * packet)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
send_packet_nocare(struct hpsb_packet * packet)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
packet_size_to_data_size(size_t packet_size,size_t header_size,size_t buffer_size,int tcode)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
handle_packet_response(struct hpsb_host * host,int tcode,quadlet_t * data,size_t size)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
create_reply_packet(struct hpsb_host * host,quadlet_t * data,size_t dsize)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
fill_async_readquad_resp(struct hpsb_packet * packet,int rcode,quadlet_t data)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
fill_async_readblock_resp(struct hpsb_packet * packet,int rcode,int length)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
fill_async_write_resp(struct hpsb_packet * packet,int rcode)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
fill_async_lock_resp(struct hpsb_packet * packet,int rcode,int extcode,int length)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
handle_incoming_packet(struct hpsb_host * host,int tcode,quadlet_t * data,size_t size,int write_acked)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 */
hpsb_packet_received(struct hpsb_host * host,quadlet_t * data,size_t size,int write_acked)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
abort_requests(struct hpsb_host * host)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
abort_timedouts(unsigned long __opaque)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
queue_packet_complete(struct hpsb_packet * packet)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 */
hpsbpkt_thread(void * __hi)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
ieee1394_init(void)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
ieee1394_cleanup(void)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 fs_initcall(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_lock);
1318 EXPORT_SYMBOL(hpsb_packet_success);
1319
1320 /** highlevel.c **/
1321 EXPORT_SYMBOL(hpsb_register_highlevel);
1322 EXPORT_SYMBOL(hpsb_unregister_highlevel);
1323 EXPORT_SYMBOL(hpsb_register_addrspace);
1324 EXPORT_SYMBOL(hpsb_unregister_addrspace);
1325 EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace);
1326 EXPORT_SYMBOL(hpsb_get_hostinfo);
1327 EXPORT_SYMBOL(hpsb_create_hostinfo);
1328 EXPORT_SYMBOL(hpsb_destroy_hostinfo);
1329 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
1330 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
1331 EXPORT_SYMBOL(hpsb_set_hostinfo);
1332
1333 /** nodemgr.c **/
1334 EXPORT_SYMBOL(hpsb_node_fill_packet);
1335 EXPORT_SYMBOL(hpsb_node_write);
1336 EXPORT_SYMBOL(__hpsb_register_protocol);
1337 EXPORT_SYMBOL(hpsb_unregister_protocol);
1338
1339 /** csr.c **/
1340 EXPORT_SYMBOL(hpsb_update_config_rom);
1341
1342 /** dma.c **/
1343 EXPORT_SYMBOL(dma_prog_region_init);
1344 EXPORT_SYMBOL(dma_prog_region_alloc);
1345 EXPORT_SYMBOL(dma_prog_region_free);
1346 EXPORT_SYMBOL(dma_region_init);
1347 EXPORT_SYMBOL(dma_region_alloc);
1348 EXPORT_SYMBOL(dma_region_free);
1349 EXPORT_SYMBOL(dma_region_sync_for_cpu);
1350 EXPORT_SYMBOL(dma_region_sync_for_device);
1351 EXPORT_SYMBOL(dma_region_mmap);
1352 EXPORT_SYMBOL(dma_region_offset_to_bus);
1353
1354 /** iso.c **/
1355 EXPORT_SYMBOL(hpsb_iso_xmit_init);
1356 EXPORT_SYMBOL(hpsb_iso_recv_init);
1357 EXPORT_SYMBOL(hpsb_iso_xmit_start);
1358 EXPORT_SYMBOL(hpsb_iso_recv_start);
1359 EXPORT_SYMBOL(hpsb_iso_recv_listen_channel);
1360 EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel);
1361 EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask);
1362 EXPORT_SYMBOL(hpsb_iso_stop);
1363 EXPORT_SYMBOL(hpsb_iso_shutdown);
1364 EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet);
1365 EXPORT_SYMBOL(hpsb_iso_xmit_sync);
1366 EXPORT_SYMBOL(hpsb_iso_recv_release_packets);
1367 EXPORT_SYMBOL(hpsb_iso_n_ready);
1368 EXPORT_SYMBOL(hpsb_iso_packet_sent);
1369 EXPORT_SYMBOL(hpsb_iso_packet_received);
1370 EXPORT_SYMBOL(hpsb_iso_wake);
1371 EXPORT_SYMBOL(hpsb_iso_recv_flush);
1372
1373 /** csr1212.c **/
1374 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
1375 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
1376 EXPORT_SYMBOL(csr1212_get_keyval);
1377 EXPORT_SYMBOL(csr1212_new_directory);
1378 EXPORT_SYMBOL(csr1212_parse_keyval);
1379 EXPORT_SYMBOL(csr1212_read);
1380 EXPORT_SYMBOL(csr1212_release_keyval);
1381