2 * Core IEEE1394 transaction logic
4 * Copyright (C) 2004-2006 Kristian Hoegsberg <krh@bitplanet.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include <linux/completion.h>
22 #include <linux/kernel.h>
23 #include <linux/kref.h>
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/interrupt.h>
27 #include <linux/pci.h>
28 #include <linux/delay.h>
29 #include <linux/poll.h>
30 #include <linux/list.h>
31 #include <linux/kthread.h>
32 #include <asm/uaccess.h>
34 #include "fw-transaction.h"
35 #include "fw-topology.h"
36 #include "fw-device.h"
38 #define HEADER_PRI(pri) ((pri) << 0)
39 #define HEADER_TCODE(tcode) ((tcode) << 4)
40 #define HEADER_RETRY(retry) ((retry) << 8)
41 #define HEADER_TLABEL(tlabel) ((tlabel) << 10)
42 #define HEADER_DESTINATION(destination) ((destination) << 16)
43 #define HEADER_SOURCE(source) ((source) << 16)
44 #define HEADER_RCODE(rcode) ((rcode) << 12)
45 #define HEADER_OFFSET_HIGH(offset_high) ((offset_high) << 0)
46 #define HEADER_DATA_LENGTH(length) ((length) << 16)
47 #define HEADER_EXTENDED_TCODE(tcode) ((tcode) << 0)
49 #define HEADER_GET_TCODE(q) (((q) >> 4) & 0x0f)
50 #define HEADER_GET_TLABEL(q) (((q) >> 10) & 0x3f)
51 #define HEADER_GET_RCODE(q) (((q) >> 12) & 0x0f)
52 #define HEADER_GET_DESTINATION(q) (((q) >> 16) & 0xffff)
53 #define HEADER_GET_SOURCE(q) (((q) >> 16) & 0xffff)
54 #define HEADER_GET_OFFSET_HIGH(q) (((q) >> 0) & 0xffff)
55 #define HEADER_GET_DATA_LENGTH(q) (((q) >> 16) & 0xffff)
56 #define HEADER_GET_EXTENDED_TCODE(q) (((q) >> 0) & 0xffff)
58 #define HEADER_DESTINATION_IS_BROADCAST(q) \
59 (((q) & HEADER_DESTINATION(0x3f)) == HEADER_DESTINATION(0x3f))
61 #define PHY_CONFIG_GAP_COUNT(gap_count) (((gap_count) << 16) | (1 << 22))
62 #define PHY_CONFIG_ROOT_ID(node_id) ((((node_id) & 0x3f) << 24) | (1 << 23))
63 #define PHY_IDENTIFIER(id) ((id) << 30)
66 close_transaction(struct fw_transaction *transaction,
67 struct fw_card *card, int rcode,
68 u32 *payload, size_t length)
70 struct fw_transaction *t;
73 spin_lock_irqsave(&card->lock, flags);
74 list_for_each_entry(t, &card->transaction_list, link) {
75 if (t == transaction) {
77 card->tlabel_mask &= ~(1 << t->tlabel);
81 spin_unlock_irqrestore(&card->lock, flags);
83 if (&t->link != &card->transaction_list) {
84 t->callback(card, rcode, payload, length, t->callback_data);
92 * Only valid for transactions that are potentially pending (ie have
96 fw_cancel_transaction(struct fw_card *card,
97 struct fw_transaction *transaction)
100 * Cancel the packet transmission if it's still queued. That
101 * will call the packet transmission callback which cancels
105 if (card->driver->cancel_packet(card, &transaction->packet) == 0)
109 * If the request packet has already been sent, we need to see
110 * if the transaction is still pending and remove it in that case.
113 return close_transaction(transaction, card, RCODE_CANCELLED, NULL, 0);
115 EXPORT_SYMBOL(fw_cancel_transaction);
118 transmit_complete_callback(struct fw_packet *packet,
119 struct fw_card *card, int status)
121 struct fw_transaction *t =
122 container_of(packet, struct fw_transaction, packet);
126 close_transaction(t, card, RCODE_COMPLETE, NULL, 0);
129 t->timestamp = packet->timestamp;
134 close_transaction(t, card, RCODE_BUSY, NULL, 0);
137 close_transaction(t, card, RCODE_DATA_ERROR, NULL, 0);
140 close_transaction(t, card, RCODE_TYPE_ERROR, NULL, 0);
144 * In this case the ack is really a juju specific
145 * rcode, so just forward that to the callback.
147 close_transaction(t, card, status, NULL, 0);
153 fw_fill_request(struct fw_packet *packet, int tcode, int tlabel,
154 int destination_id, int source_id, int generation, int speed,
155 unsigned long long offset, void *payload, size_t length)
160 ext_tcode = tcode & ~0x10;
161 tcode = TCODE_LOCK_REQUEST;
166 HEADER_RETRY(RETRY_X) |
167 HEADER_TLABEL(tlabel) |
168 HEADER_TCODE(tcode) |
169 HEADER_DESTINATION(destination_id);
171 HEADER_OFFSET_HIGH(offset >> 32) | HEADER_SOURCE(source_id);
176 case TCODE_WRITE_QUADLET_REQUEST:
177 packet->header[3] = *(u32 *)payload;
178 packet->header_length = 16;
179 packet->payload_length = 0;
182 case TCODE_LOCK_REQUEST:
183 case TCODE_WRITE_BLOCK_REQUEST:
185 HEADER_DATA_LENGTH(length) |
186 HEADER_EXTENDED_TCODE(ext_tcode);
187 packet->header_length = 16;
188 packet->payload = payload;
189 packet->payload_length = length;
192 case TCODE_READ_QUADLET_REQUEST:
193 packet->header_length = 12;
194 packet->payload_length = 0;
197 case TCODE_READ_BLOCK_REQUEST:
199 HEADER_DATA_LENGTH(length) |
200 HEADER_EXTENDED_TCODE(ext_tcode);
201 packet->header_length = 16;
202 packet->payload_length = 0;
206 packet->speed = speed;
207 packet->generation = generation;
212 * This function provides low-level access to the IEEE1394 transaction
213 * logic. Most C programs would use either fw_read(), fw_write() or
214 * fw_lock() instead - those function are convenience wrappers for
215 * this function. The fw_send_request() function is primarily
216 * provided as a flexible, one-stop entry point for languages bindings
217 * and protocol bindings.
219 * FIXME: Document this function further, in particular the possible
220 * values for rcode in the callback. In short, we map ACK_COMPLETE to
221 * RCODE_COMPLETE, internal errors set errno and set rcode to
222 * RCODE_SEND_ERROR (which is out of range for standard ieee1394
223 * rcodes). All other rcodes are forwarded unchanged. For all
224 * errors, payload is NULL, length is 0.
226 * Can not expect the callback to be called before the function
227 * returns, though this does happen in some cases (ACK_COMPLETE and
230 * The payload is only used for write requests and must not be freed
231 * until the callback has been called.
233 * @param card the card from which to send the request
234 * @param tcode the tcode for this transaction. Do not use
235 * TCODE_LOCK_REQUEST directly, instead use TCODE_LOCK_MASK_SWAP
236 * etc. to specify tcode and ext_tcode.
237 * @param node_id the destination node ID (bus ID and PHY ID concatenated)
238 * @param generation the generation for which node_id is valid
239 * @param speed the speed to use for sending the request
240 * @param offset the 48 bit offset on the destination node
241 * @param payload the data payload for the request subaction
242 * @param length the length in bytes of the data to read
243 * @param callback function to be called when the transaction is completed
244 * @param callback_data pointer to arbitrary data, which will be
245 * passed to the callback
248 fw_send_request(struct fw_card *card, struct fw_transaction *t,
249 int tcode, int node_id, int generation, int speed,
250 unsigned long long offset,
251 void *payload, size_t length,
252 fw_transaction_callback_t callback, void *callback_data)
258 * Bump the flush timer up 100ms first of all so we
259 * don't race with a flush timer callback.
262 mod_timer(&card->flush_timer, jiffies + DIV_ROUND_UP(HZ, 10));
265 * Allocate tlabel from the bitmap and put the transaction on
266 * the list while holding the card spinlock.
269 spin_lock_irqsave(&card->lock, flags);
271 tlabel = card->current_tlabel;
272 if (card->tlabel_mask & (1 << tlabel)) {
273 spin_unlock_irqrestore(&card->lock, flags);
274 callback(card, RCODE_SEND_ERROR, NULL, 0, callback_data);
278 card->current_tlabel = (card->current_tlabel + 1) & 0x1f;
279 card->tlabel_mask |= (1 << tlabel);
281 t->node_id = node_id;
283 t->callback = callback;
284 t->callback_data = callback_data;
286 fw_fill_request(&t->packet, tcode, t->tlabel, node_id, card->node_id,
287 generation, speed, offset, payload, length);
288 t->packet.callback = transmit_complete_callback;
290 list_add_tail(&t->link, &card->transaction_list);
292 spin_unlock_irqrestore(&card->lock, flags);
294 card->driver->send_request(card, &t->packet);
296 EXPORT_SYMBOL(fw_send_request);
298 struct fw_phy_packet {
299 struct fw_packet packet;
300 struct completion done;
304 static void phy_packet_release(struct kref *kref)
306 struct fw_phy_packet *p =
307 container_of(kref, struct fw_phy_packet, kref);
311 static void transmit_phy_packet_callback(struct fw_packet *packet,
312 struct fw_card *card, int status)
314 struct fw_phy_packet *p =
315 container_of(packet, struct fw_phy_packet, packet);
318 kref_put(&p->kref, phy_packet_release);
321 void fw_send_phy_config(struct fw_card *card,
322 int node_id, int generation, int gap_count)
324 struct fw_phy_packet *p;
325 long timeout = DIV_ROUND_UP(HZ, 10);
326 u32 data = PHY_IDENTIFIER(PHY_PACKET_CONFIG) |
327 PHY_CONFIG_ROOT_ID(node_id) |
328 PHY_CONFIG_GAP_COUNT(gap_count);
330 p = kmalloc(sizeof(*p), GFP_KERNEL);
334 p->packet.header[0] = data;
335 p->packet.header[1] = ~data;
336 p->packet.header_length = 8;
337 p->packet.payload_length = 0;
338 p->packet.speed = SCODE_100;
339 p->packet.generation = generation;
340 p->packet.callback = transmit_phy_packet_callback;
341 init_completion(&p->done);
342 kref_set(&p->kref, 2);
344 card->driver->send_request(card, &p->packet);
345 timeout = wait_for_completion_timeout(&p->done, timeout);
346 kref_put(&p->kref, phy_packet_release);
348 /* will leak p if the callback is never executed */
349 WARN_ON(timeout == 0);
352 void fw_flush_transactions(struct fw_card *card)
354 struct fw_transaction *t, *next;
355 struct list_head list;
358 INIT_LIST_HEAD(&list);
359 spin_lock_irqsave(&card->lock, flags);
360 list_splice_init(&card->transaction_list, &list);
361 card->tlabel_mask = 0;
362 spin_unlock_irqrestore(&card->lock, flags);
364 list_for_each_entry_safe(t, next, &list, link) {
365 card->driver->cancel_packet(card, &t->packet);
368 * At this point cancel_packet will never call the
369 * transaction callback, since we just took all the
370 * transactions out of the list. So do it here.
372 t->callback(card, RCODE_CANCELLED, NULL, 0, t->callback_data);
376 static struct fw_address_handler *
377 lookup_overlapping_address_handler(struct list_head *list,
378 unsigned long long offset, size_t length)
380 struct fw_address_handler *handler;
382 list_for_each_entry(handler, list, link) {
383 if (handler->offset < offset + length &&
384 offset < handler->offset + handler->length)
391 static struct fw_address_handler *
392 lookup_enclosing_address_handler(struct list_head *list,
393 unsigned long long offset, size_t length)
395 struct fw_address_handler *handler;
397 list_for_each_entry(handler, list, link) {
398 if (handler->offset <= offset &&
399 offset + length <= handler->offset + handler->length)
406 static DEFINE_SPINLOCK(address_handler_lock);
407 static LIST_HEAD(address_handler_list);
409 const struct fw_address_region fw_high_memory_region =
410 { .start = 0x000100000000ULL, .end = 0xffffe0000000ULL, };
411 EXPORT_SYMBOL(fw_high_memory_region);
414 const struct fw_address_region fw_low_memory_region =
415 { .start = 0x000000000000ULL, .end = 0x000100000000ULL, };
416 const struct fw_address_region fw_private_region =
417 { .start = 0xffffe0000000ULL, .end = 0xfffff0000000ULL, };
418 const struct fw_address_region fw_csr_region =
419 { .start = CSR_REGISTER_BASE,
420 .end = CSR_REGISTER_BASE | CSR_CONFIG_ROM_END, };
421 const struct fw_address_region fw_unit_space_region =
422 { .start = 0xfffff0000900ULL, .end = 0x1000000000000ULL, };
426 * Allocate a range of addresses in the node space of the OHCI
427 * controller. When a request is received that falls within the
428 * specified address range, the specified callback is invoked. The
429 * parameters passed to the callback give the details of the
430 * particular request.
432 * Return value: 0 on success, non-zero otherwise.
433 * The start offset of the handler's address region is determined by
434 * fw_core_add_address_handler() and is returned in handler->offset.
435 * The offset is quadlet-aligned.
438 fw_core_add_address_handler(struct fw_address_handler *handler,
439 const struct fw_address_region *region)
441 struct fw_address_handler *other;
445 spin_lock_irqsave(&address_handler_lock, flags);
447 handler->offset = roundup(region->start, 4);
448 while (handler->offset + handler->length <= region->end) {
450 lookup_overlapping_address_handler(&address_handler_list,
455 roundup(other->offset + other->length, 4);
457 list_add_tail(&handler->link, &address_handler_list);
463 spin_unlock_irqrestore(&address_handler_lock, flags);
467 EXPORT_SYMBOL(fw_core_add_address_handler);
470 * Deallocate a range of addresses allocated with fw_allocate. This
471 * will call the associated callback one last time with a the special
472 * tcode TCODE_DEALLOCATE, to let the client destroy the registered
473 * callback data. For convenience, the callback parameters offset and
474 * length are set to the start and the length respectively for the
475 * deallocated region, payload is set to NULL.
477 void fw_core_remove_address_handler(struct fw_address_handler *handler)
481 spin_lock_irqsave(&address_handler_lock, flags);
482 list_del(&handler->link);
483 spin_unlock_irqrestore(&address_handler_lock, flags);
485 EXPORT_SYMBOL(fw_core_remove_address_handler);
488 struct fw_packet response;
489 u32 request_header[4];
496 free_response_callback(struct fw_packet *packet,
497 struct fw_card *card, int status)
499 struct fw_request *request;
501 request = container_of(packet, struct fw_request, response);
506 fw_fill_response(struct fw_packet *response, u32 *request_header,
507 int rcode, void *payload, size_t length)
509 int tcode, tlabel, extended_tcode, source, destination;
511 tcode = HEADER_GET_TCODE(request_header[0]);
512 tlabel = HEADER_GET_TLABEL(request_header[0]);
513 source = HEADER_GET_DESTINATION(request_header[0]);
514 destination = HEADER_GET_SOURCE(request_header[1]);
515 extended_tcode = HEADER_GET_EXTENDED_TCODE(request_header[3]);
517 response->header[0] =
518 HEADER_RETRY(RETRY_1) |
519 HEADER_TLABEL(tlabel) |
520 HEADER_DESTINATION(destination);
521 response->header[1] =
522 HEADER_SOURCE(source) |
524 response->header[2] = 0;
527 case TCODE_WRITE_QUADLET_REQUEST:
528 case TCODE_WRITE_BLOCK_REQUEST:
529 response->header[0] |= HEADER_TCODE(TCODE_WRITE_RESPONSE);
530 response->header_length = 12;
531 response->payload_length = 0;
534 case TCODE_READ_QUADLET_REQUEST:
535 response->header[0] |=
536 HEADER_TCODE(TCODE_READ_QUADLET_RESPONSE);
538 response->header[3] = *(u32 *)payload;
540 response->header[3] = 0;
541 response->header_length = 16;
542 response->payload_length = 0;
545 case TCODE_READ_BLOCK_REQUEST:
546 case TCODE_LOCK_REQUEST:
547 response->header[0] |= HEADER_TCODE(tcode + 2);
548 response->header[3] =
549 HEADER_DATA_LENGTH(length) |
550 HEADER_EXTENDED_TCODE(extended_tcode);
551 response->header_length = 16;
552 response->payload = payload;
553 response->payload_length = length;
561 EXPORT_SYMBOL(fw_fill_response);
563 static struct fw_request *
564 allocate_request(struct fw_packet *p)
566 struct fw_request *request;
568 int request_tcode, t;
570 request_tcode = HEADER_GET_TCODE(p->header[0]);
571 switch (request_tcode) {
572 case TCODE_WRITE_QUADLET_REQUEST:
573 data = &p->header[3];
577 case TCODE_WRITE_BLOCK_REQUEST:
578 case TCODE_LOCK_REQUEST:
580 length = HEADER_GET_DATA_LENGTH(p->header[3]);
583 case TCODE_READ_QUADLET_REQUEST:
588 case TCODE_READ_BLOCK_REQUEST:
590 length = HEADER_GET_DATA_LENGTH(p->header[3]);
594 fw_error("ERROR - corrupt request received - %08x %08x %08x\n",
595 p->header[0], p->header[1], p->header[2]);
599 request = kmalloc(sizeof(*request) + length, GFP_ATOMIC);
603 t = (p->timestamp & 0x1fff) + 4000;
605 t = (p->timestamp & ~0x1fff) + 0x2000 + t - 8000;
607 t = (p->timestamp & ~0x1fff) + t;
609 request->response.speed = p->speed;
610 request->response.timestamp = t;
611 request->response.generation = p->generation;
612 request->response.ack = 0;
613 request->response.callback = free_response_callback;
614 request->ack = p->ack;
615 request->length = length;
617 memcpy(request->data, data, length);
619 memcpy(request->request_header, p->header, sizeof(p->header));
625 fw_send_response(struct fw_card *card, struct fw_request *request, int rcode)
627 /* unified transaction or broadcast transaction: don't respond */
628 if (request->ack != ACK_PENDING ||
629 HEADER_DESTINATION_IS_BROADCAST(request->request_header[0])) {
634 if (rcode == RCODE_COMPLETE)
635 fw_fill_response(&request->response, request->request_header,
636 rcode, request->data, request->length);
638 fw_fill_response(&request->response, request->request_header,
641 card->driver->send_response(card, &request->response);
643 EXPORT_SYMBOL(fw_send_response);
646 fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
648 struct fw_address_handler *handler;
649 struct fw_request *request;
650 unsigned long long offset;
652 int tcode, destination, source;
654 if (p->ack != ACK_PENDING && p->ack != ACK_COMPLETE)
657 request = allocate_request(p);
658 if (request == NULL) {
659 /* FIXME: send statically allocated busy packet. */
664 ((unsigned long long)
665 HEADER_GET_OFFSET_HIGH(p->header[1]) << 32) | p->header[2];
666 tcode = HEADER_GET_TCODE(p->header[0]);
667 destination = HEADER_GET_DESTINATION(p->header[0]);
668 source = HEADER_GET_SOURCE(p->header[1]);
670 spin_lock_irqsave(&address_handler_lock, flags);
671 handler = lookup_enclosing_address_handler(&address_handler_list,
672 offset, request->length);
673 spin_unlock_irqrestore(&address_handler_lock, flags);
676 * FIXME: lookup the fw_node corresponding to the sender of
677 * this request and pass that to the address handler instead
678 * of the node ID. We may also want to move the address
679 * allocations to fw_node so we only do this callback if the
680 * upper layers registered it for this node.
684 fw_send_response(card, request, RCODE_ADDRESS_ERROR);
686 handler->address_callback(card, request,
687 tcode, destination, source,
688 p->generation, p->speed, offset,
689 request->data, request->length,
690 handler->callback_data);
692 EXPORT_SYMBOL(fw_core_handle_request);
695 fw_core_handle_response(struct fw_card *card, struct fw_packet *p)
697 struct fw_transaction *t;
701 int tcode, tlabel, destination, source, rcode;
703 tcode = HEADER_GET_TCODE(p->header[0]);
704 tlabel = HEADER_GET_TLABEL(p->header[0]);
705 destination = HEADER_GET_DESTINATION(p->header[0]);
706 source = HEADER_GET_SOURCE(p->header[1]);
707 rcode = HEADER_GET_RCODE(p->header[1]);
709 spin_lock_irqsave(&card->lock, flags);
710 list_for_each_entry(t, &card->transaction_list, link) {
711 if (t->node_id == source && t->tlabel == tlabel) {
713 card->tlabel_mask &= ~(1 << t->tlabel);
717 spin_unlock_irqrestore(&card->lock, flags);
719 if (&t->link == &card->transaction_list) {
720 fw_notify("Unsolicited response (source %x, tlabel %x)\n",
726 * FIXME: sanity check packet, is length correct, does tcodes
727 * and addresses match.
731 case TCODE_READ_QUADLET_RESPONSE:
732 data = (u32 *) &p->header[3];
736 case TCODE_WRITE_RESPONSE:
741 case TCODE_READ_BLOCK_RESPONSE:
742 case TCODE_LOCK_RESPONSE:
744 data_length = HEADER_GET_DATA_LENGTH(p->header[3]);
748 /* Should never happen, this is just to shut up gcc. */
755 * The response handler may be executed while the request handler
756 * is still pending. Cancel the request handler.
758 card->driver->cancel_packet(card, &t->packet);
760 t->callback(card, rcode, data, data_length, t->callback_data);
762 EXPORT_SYMBOL(fw_core_handle_response);
764 static const struct fw_address_region topology_map_region =
765 { .start = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP,
766 .end = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP_END, };
769 handle_topology_map(struct fw_card *card, struct fw_request *request,
770 int tcode, int destination, int source,
771 int generation, int speed,
772 unsigned long long offset,
773 void *payload, size_t length, void *callback_data)
778 if (!TCODE_IS_READ_REQUEST(tcode)) {
779 fw_send_response(card, request, RCODE_TYPE_ERROR);
783 if ((offset & 3) > 0 || (length & 3) > 0) {
784 fw_send_response(card, request, RCODE_ADDRESS_ERROR);
788 start = (offset - topology_map_region.start) / 4;
789 end = start + length / 4;
792 for (i = 0; i < length / 4; i++)
793 map[i] = cpu_to_be32(card->topology_map[start + i]);
795 fw_send_response(card, request, RCODE_COMPLETE);
798 static struct fw_address_handler topology_map = {
800 .address_callback = handle_topology_map,
803 static const struct fw_address_region registers_region =
804 { .start = CSR_REGISTER_BASE,
805 .end = CSR_REGISTER_BASE | CSR_CONFIG_ROM, };
808 handle_registers(struct fw_card *card, struct fw_request *request,
809 int tcode, int destination, int source,
810 int generation, int speed,
811 unsigned long long offset,
812 void *payload, size_t length, void *callback_data)
814 int reg = offset & ~CSR_REGISTER_BASE;
815 unsigned long long bus_time;
816 __be32 *data = payload;
817 int rcode = RCODE_COMPLETE;
822 if (!TCODE_IS_READ_REQUEST(tcode) || length != 4) {
823 rcode = RCODE_TYPE_ERROR;
827 bus_time = card->driver->get_bus_time(card);
828 if (reg == CSR_CYCLE_TIME)
829 *data = cpu_to_be32(bus_time);
831 *data = cpu_to_be32(bus_time >> 25);
834 case CSR_BROADCAST_CHANNEL:
835 if (tcode == TCODE_READ_QUADLET_REQUEST)
836 *data = cpu_to_be32(card->broadcast_channel);
837 else if (tcode == TCODE_WRITE_QUADLET_REQUEST)
838 card->broadcast_channel =
839 (be32_to_cpu(*data) & BROADCAST_CHANNEL_VALID) |
840 BROADCAST_CHANNEL_INITIAL;
842 rcode = RCODE_TYPE_ERROR;
845 case CSR_BUS_MANAGER_ID:
846 case CSR_BANDWIDTH_AVAILABLE:
847 case CSR_CHANNELS_AVAILABLE_HI:
848 case CSR_CHANNELS_AVAILABLE_LO:
850 * FIXME: these are handled by the OHCI hardware and
851 * the stack never sees these request. If we add
852 * support for a new type of controller that doesn't
853 * handle this in hardware we need to deal with these
859 case CSR_BUSY_TIMEOUT:
860 /* FIXME: Implement this. */
863 rcode = RCODE_ADDRESS_ERROR;
867 fw_send_response(card, request, rcode);
870 static struct fw_address_handler registers = {
872 .address_callback = handle_registers,
875 MODULE_AUTHOR("Kristian Hoegsberg <krh@bitplanet.net>");
876 MODULE_DESCRIPTION("Core IEEE1394 transaction logic");
877 MODULE_LICENSE("GPL");
879 static const u32 vendor_textual_descriptor[] = {
880 /* textual descriptor leaf () */
884 0x4c696e75, /* L i n u */
885 0x78204669, /* x F i */
886 0x72657769, /* r e w i */
887 0x72650000, /* r e */
890 static const u32 model_textual_descriptor[] = {
891 /* model descriptor leaf () */
895 0x4a756a75, /* J u j u */
898 static struct fw_descriptor vendor_id_descriptor = {
899 .length = ARRAY_SIZE(vendor_textual_descriptor),
900 .immediate = 0x03d00d1e,
902 .data = vendor_textual_descriptor,
905 static struct fw_descriptor model_id_descriptor = {
906 .length = ARRAY_SIZE(model_textual_descriptor),
907 .immediate = 0x17000001,
909 .data = model_textual_descriptor,
912 static int __init fw_core_init(void)
916 retval = bus_register(&fw_bus_type);
920 fw_cdev_major = register_chrdev(0, "firewire", &fw_device_ops);
921 if (fw_cdev_major < 0) {
922 bus_unregister(&fw_bus_type);
923 return fw_cdev_major;
926 retval = fw_core_add_address_handler(&topology_map,
927 &topology_map_region);
930 retval = fw_core_add_address_handler(®isters,
934 /* Add the vendor textual descriptor. */
935 retval = fw_core_add_descriptor(&vendor_id_descriptor);
937 retval = fw_core_add_descriptor(&model_id_descriptor);
943 static void __exit fw_core_cleanup(void)
945 unregister_chrdev(fw_cdev_major, "firewire");
946 bus_unregister(&fw_bus_type);
949 module_init(fw_core_init);
950 module_exit(fw_core_cleanup);