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1da177e4 LT |
1 | /* |
2 | * IEEE 1394 for Linux | |
3 | * | |
4 | * Copyright (C) 1999 Andreas E. Bombe | |
5 | * | |
6 | * This code is licensed under the GPL. See the file COPYING in the root | |
7 | * directory of the kernel sources for details. | |
8 | * | |
9 | * | |
10 | * Contributions: | |
11 | * | |
12 | * Christian Toegel <christian.toegel@gmx.at> | |
13 | * unregister address space | |
14 | * | |
15 | * Manfred Weihs <weihs@ict.tuwien.ac.at> | |
16 | * unregister address space | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <linux/config.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/list.h> | |
23 | #include <linux/bitops.h> | |
24 | ||
25 | #include "ieee1394.h" | |
26 | #include "ieee1394_types.h" | |
27 | #include "hosts.h" | |
28 | #include "ieee1394_core.h" | |
29 | #include "highlevel.h" | |
30 | #include "nodemgr.h" | |
31 | ||
32 | ||
33 | struct hl_host_info { | |
34 | struct list_head list; | |
35 | struct hpsb_host *host; | |
36 | size_t size; | |
37 | unsigned long key; | |
38 | void *data; | |
39 | }; | |
40 | ||
41 | ||
42 | static LIST_HEAD(hl_drivers); | |
43 | static DECLARE_RWSEM(hl_drivers_sem); | |
44 | ||
45 | static LIST_HEAD(hl_irqs); | |
46 | static DEFINE_RWLOCK(hl_irqs_lock); | |
47 | ||
48 | static DEFINE_RWLOCK(addr_space_lock); | |
49 | ||
50 | /* addr_space list will have zero and max already included as bounds */ | |
51 | static struct hpsb_address_ops dummy_ops = { NULL, NULL, NULL, NULL }; | |
52 | static struct hpsb_address_serve dummy_zero_addr, dummy_max_addr; | |
53 | ||
54 | ||
55 | static struct hl_host_info *hl_get_hostinfo(struct hpsb_highlevel *hl, | |
56 | struct hpsb_host *host) | |
57 | { | |
58 | struct hl_host_info *hi = NULL; | |
59 | ||
60 | if (!hl || !host) | |
61 | return NULL; | |
62 | ||
63 | read_lock(&hl->host_info_lock); | |
64 | list_for_each_entry(hi, &hl->host_info_list, list) { | |
65 | if (hi->host == host) { | |
66 | read_unlock(&hl->host_info_lock); | |
67 | return hi; | |
68 | } | |
69 | } | |
70 | read_unlock(&hl->host_info_lock); | |
71 | ||
72 | return NULL; | |
73 | } | |
74 | ||
75 | ||
76 | /* Returns a per host/driver data structure that was previously stored by | |
77 | * hpsb_create_hostinfo. */ | |
78 | void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host) | |
79 | { | |
80 | struct hl_host_info *hi = hl_get_hostinfo(hl, host); | |
81 | ||
82 | if (hi) | |
83 | return hi->data; | |
84 | ||
85 | return NULL; | |
86 | } | |
87 | ||
88 | ||
89 | /* If size is zero, then the return here is only valid for error checking */ | |
90 | void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, | |
91 | size_t data_size) | |
92 | { | |
93 | struct hl_host_info *hi; | |
94 | void *data; | |
95 | unsigned long flags; | |
96 | ||
97 | hi = hl_get_hostinfo(hl, host); | |
98 | if (hi) { | |
99 | HPSB_ERR("%s called hpsb_create_hostinfo when hostinfo already exists", | |
100 | hl->name); | |
101 | return NULL; | |
102 | } | |
103 | ||
8551158a | 104 | hi = kzalloc(sizeof(*hi) + data_size, GFP_ATOMIC); |
1da177e4 LT |
105 | if (!hi) |
106 | return NULL; | |
107 | ||
1da177e4 LT |
108 | if (data_size) { |
109 | data = hi->data = hi + 1; | |
110 | hi->size = data_size; | |
111 | } else | |
112 | data = hi; | |
113 | ||
114 | hi->host = host; | |
115 | ||
116 | write_lock_irqsave(&hl->host_info_lock, flags); | |
117 | list_add_tail(&hi->list, &hl->host_info_list); | |
118 | write_unlock_irqrestore(&hl->host_info_lock, flags); | |
119 | ||
120 | return data; | |
121 | } | |
122 | ||
123 | ||
124 | int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, | |
125 | void *data) | |
126 | { | |
127 | struct hl_host_info *hi; | |
128 | ||
129 | hi = hl_get_hostinfo(hl, host); | |
130 | if (hi) { | |
131 | if (!hi->size && !hi->data) { | |
132 | hi->data = data; | |
133 | return 0; | |
134 | } else | |
135 | HPSB_ERR("%s called hpsb_set_hostinfo when hostinfo already has data", | |
136 | hl->name); | |
137 | } else | |
138 | HPSB_ERR("%s called hpsb_set_hostinfo when no hostinfo exists", | |
139 | hl->name); | |
140 | ||
141 | return -EINVAL; | |
142 | } | |
143 | ||
144 | ||
145 | void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host) | |
146 | { | |
147 | struct hl_host_info *hi; | |
148 | ||
149 | hi = hl_get_hostinfo(hl, host); | |
150 | if (hi) { | |
151 | unsigned long flags; | |
152 | write_lock_irqsave(&hl->host_info_lock, flags); | |
153 | list_del(&hi->list); | |
154 | write_unlock_irqrestore(&hl->host_info_lock, flags); | |
155 | kfree(hi); | |
156 | } | |
157 | ||
158 | return; | |
159 | } | |
160 | ||
161 | ||
162 | void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host, unsigned long key) | |
163 | { | |
164 | struct hl_host_info *hi; | |
165 | ||
166 | hi = hl_get_hostinfo(hl, host); | |
167 | if (hi) | |
168 | hi->key = key; | |
169 | ||
170 | return; | |
171 | } | |
172 | ||
173 | ||
174 | void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key) | |
175 | { | |
176 | struct hl_host_info *hi; | |
177 | void *data = NULL; | |
178 | ||
179 | if (!hl) | |
180 | return NULL; | |
181 | ||
182 | read_lock(&hl->host_info_lock); | |
183 | list_for_each_entry(hi, &hl->host_info_list, list) { | |
184 | if (hi->key == key) { | |
185 | data = hi->data; | |
186 | break; | |
187 | } | |
188 | } | |
189 | read_unlock(&hl->host_info_lock); | |
190 | ||
191 | return data; | |
192 | } | |
193 | ||
194 | ||
195 | static int highlevel_for_each_host_reg(struct hpsb_host *host, void *__data) | |
196 | { | |
197 | struct hpsb_highlevel *hl = __data; | |
198 | ||
199 | hl->add_host(host); | |
200 | ||
201 | if (host->update_config_rom) { | |
202 | if (hpsb_update_config_rom_image(host) < 0) { | |
203 | HPSB_ERR("Failed to generate Configuration ROM image for host " | |
204 | "%s-%d", hl->name, host->id); | |
205 | } | |
206 | } | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
211 | void hpsb_register_highlevel(struct hpsb_highlevel *hl) | |
212 | { | |
213 | INIT_LIST_HEAD(&hl->addr_list); | |
214 | INIT_LIST_HEAD(&hl->host_info_list); | |
215 | ||
216 | rwlock_init(&hl->host_info_lock); | |
217 | ||
218 | down_write(&hl_drivers_sem); | |
219 | list_add_tail(&hl->hl_list, &hl_drivers); | |
220 | up_write(&hl_drivers_sem); | |
221 | ||
222 | write_lock(&hl_irqs_lock); | |
223 | list_add_tail(&hl->irq_list, &hl_irqs); | |
224 | write_unlock(&hl_irqs_lock); | |
225 | ||
226 | if (hl->add_host) | |
227 | nodemgr_for_each_host(hl, highlevel_for_each_host_reg); | |
228 | ||
229 | return; | |
230 | } | |
231 | ||
232 | static void __delete_addr(struct hpsb_address_serve *as) | |
233 | { | |
234 | list_del(&as->host_list); | |
235 | list_del(&as->hl_list); | |
236 | kfree(as); | |
237 | } | |
238 | ||
239 | static void __unregister_host(struct hpsb_highlevel *hl, struct hpsb_host *host, int update_cr) | |
240 | { | |
241 | unsigned long flags; | |
242 | struct list_head *lh, *next; | |
243 | struct hpsb_address_serve *as; | |
244 | ||
245 | /* First, let the highlevel driver unreg */ | |
246 | if (hl->remove_host) | |
247 | hl->remove_host(host); | |
248 | ||
249 | /* Remove any addresses that are matched for this highlevel driver | |
250 | * and this particular host. */ | |
251 | write_lock_irqsave(&addr_space_lock, flags); | |
252 | list_for_each_safe (lh, next, &hl->addr_list) { | |
253 | as = list_entry(lh, struct hpsb_address_serve, hl_list); | |
254 | ||
255 | if (as->host == host) | |
256 | __delete_addr(as); | |
257 | } | |
258 | write_unlock_irqrestore(&addr_space_lock, flags); | |
259 | ||
260 | /* Now update the config-rom to reflect anything removed by the | |
261 | * highlevel driver. */ | |
262 | if (update_cr && host->update_config_rom) { | |
263 | if (hpsb_update_config_rom_image(host) < 0) { | |
264 | HPSB_ERR("Failed to generate Configuration ROM image for host " | |
265 | "%s-%d", hl->name, host->id); | |
266 | } | |
267 | } | |
268 | ||
269 | /* And finally, remove all the host info associated between these | |
270 | * two. */ | |
271 | hpsb_destroy_hostinfo(hl, host); | |
272 | } | |
273 | ||
274 | static int highlevel_for_each_host_unreg(struct hpsb_host *host, void *__data) | |
275 | { | |
276 | struct hpsb_highlevel *hl = __data; | |
277 | ||
278 | __unregister_host(hl, host, 1); | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
283 | void hpsb_unregister_highlevel(struct hpsb_highlevel *hl) | |
284 | { | |
285 | write_lock(&hl_irqs_lock); | |
286 | list_del(&hl->irq_list); | |
287 | write_unlock(&hl_irqs_lock); | |
288 | ||
289 | down_write(&hl_drivers_sem); | |
290 | list_del(&hl->hl_list); | |
291 | up_write(&hl_drivers_sem); | |
292 | ||
293 | nodemgr_for_each_host(hl, highlevel_for_each_host_unreg); | |
294 | } | |
295 | ||
296 | u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl, | |
297 | struct hpsb_host *host, | |
298 | struct hpsb_address_ops *ops, | |
299 | u64 size, u64 alignment, | |
300 | u64 start, u64 end) | |
301 | { | |
302 | struct hpsb_address_serve *as, *a1, *a2; | |
303 | struct list_head *entry; | |
304 | u64 retval = ~0ULL; | |
305 | unsigned long flags; | |
306 | u64 align_mask = ~(alignment - 1); | |
307 | ||
308 | if ((alignment & 3) || (alignment > 0x800000000000ULL) || | |
37d54111 | 309 | (hweight64(alignment) != 1)) { |
1da177e4 LT |
310 | HPSB_ERR("%s called with invalid alignment: 0x%048llx", |
311 | __FUNCTION__, (unsigned long long)alignment); | |
312 | return retval; | |
313 | } | |
314 | ||
315 | if (start == ~0ULL && end == ~0ULL) { | |
316 | start = CSR1212_ALL_SPACE_BASE + 0xffff00000000ULL; /* ohci1394.c limit */ | |
317 | end = CSR1212_ALL_SPACE_END; | |
318 | } | |
319 | ||
320 | if (((start|end) & ~align_mask) || (start >= end) || (end > 0x1000000000000ULL)) { | |
321 | HPSB_ERR("%s called with invalid addresses (start = %012Lx end = %012Lx)", | |
322 | __FUNCTION__, (unsigned long long)start, (unsigned long long)end); | |
323 | return retval; | |
324 | } | |
325 | ||
8551158a SR |
326 | as = kmalloc(sizeof(*as), GFP_KERNEL); |
327 | if (!as) | |
1da177e4 | 328 | return retval; |
1da177e4 LT |
329 | |
330 | INIT_LIST_HEAD(&as->host_list); | |
331 | INIT_LIST_HEAD(&as->hl_list); | |
332 | as->op = ops; | |
333 | as->host = host; | |
334 | ||
335 | write_lock_irqsave(&addr_space_lock, flags); | |
336 | ||
337 | list_for_each(entry, &host->addr_space) { | |
338 | u64 a1sa, a1ea; | |
339 | u64 a2sa, a2ea; | |
340 | ||
341 | a1 = list_entry(entry, struct hpsb_address_serve, host_list); | |
342 | a2 = list_entry(entry->next, struct hpsb_address_serve, host_list); | |
343 | ||
344 | a1sa = a1->start & align_mask; | |
345 | a1ea = (a1->end + alignment -1) & align_mask; | |
346 | a2sa = a2->start & align_mask; | |
347 | a2ea = (a2->end + alignment -1) & align_mask; | |
348 | ||
349 | if ((a2sa - a1ea >= size) && (a2sa - start >= size) && (a2sa > start)) { | |
350 | as->start = max(start, a1ea); | |
351 | as->end = as->start + size; | |
352 | list_add(&as->host_list, entry); | |
353 | list_add_tail(&as->hl_list, &hl->addr_list); | |
354 | retval = as->start; | |
355 | break; | |
356 | } | |
357 | } | |
358 | ||
359 | write_unlock_irqrestore(&addr_space_lock, flags); | |
360 | ||
361 | if (retval == ~0ULL) { | |
362 | kfree(as); | |
363 | } | |
364 | ||
365 | return retval; | |
366 | } | |
367 | ||
368 | int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host, | |
369 | struct hpsb_address_ops *ops, u64 start, u64 end) | |
370 | { | |
371 | struct hpsb_address_serve *as; | |
372 | struct list_head *lh; | |
373 | int retval = 0; | |
374 | unsigned long flags; | |
375 | ||
376 | if (((start|end) & 3) || (start >= end) || (end > 0x1000000000000ULL)) { | |
377 | HPSB_ERR("%s called with invalid addresses", __FUNCTION__); | |
378 | return 0; | |
379 | } | |
380 | ||
8551158a SR |
381 | as = kmalloc(sizeof(*as), GFP_ATOMIC); |
382 | if (!as) | |
383 | return 0; | |
1da177e4 LT |
384 | |
385 | INIT_LIST_HEAD(&as->host_list); | |
386 | INIT_LIST_HEAD(&as->hl_list); | |
387 | as->op = ops; | |
388 | as->start = start; | |
389 | as->end = end; | |
390 | as->host = host; | |
391 | ||
392 | write_lock_irqsave(&addr_space_lock, flags); | |
393 | ||
394 | list_for_each(lh, &host->addr_space) { | |
395 | struct hpsb_address_serve *as_this = | |
396 | list_entry(lh, struct hpsb_address_serve, host_list); | |
397 | struct hpsb_address_serve *as_next = | |
398 | list_entry(lh->next, struct hpsb_address_serve, host_list); | |
399 | ||
400 | if (as_this->end > as->start) | |
401 | break; | |
402 | ||
403 | if (as_next->start >= as->end) { | |
404 | list_add(&as->host_list, lh); | |
405 | list_add_tail(&as->hl_list, &hl->addr_list); | |
406 | retval = 1; | |
407 | break; | |
408 | } | |
409 | } | |
410 | write_unlock_irqrestore(&addr_space_lock, flags); | |
411 | ||
412 | if (retval == 0) | |
413 | kfree(as); | |
414 | ||
415 | return retval; | |
416 | } | |
417 | ||
418 | int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host, | |
419 | u64 start) | |
420 | { | |
421 | int retval = 0; | |
422 | struct hpsb_address_serve *as; | |
423 | struct list_head *lh, *next; | |
424 | unsigned long flags; | |
425 | ||
426 | write_lock_irqsave(&addr_space_lock, flags); | |
427 | ||
428 | list_for_each_safe (lh, next, &hl->addr_list) { | |
429 | as = list_entry(lh, struct hpsb_address_serve, hl_list); | |
430 | if (as->start == start && as->host == host) { | |
431 | __delete_addr(as); | |
432 | retval = 1; | |
433 | break; | |
434 | } | |
435 | } | |
436 | ||
437 | write_unlock_irqrestore(&addr_space_lock, flags); | |
438 | ||
439 | return retval; | |
440 | } | |
441 | ||
442 | int hpsb_listen_channel(struct hpsb_highlevel *hl, struct hpsb_host *host, | |
443 | unsigned int channel) | |
444 | { | |
445 | if (channel > 63) { | |
446 | HPSB_ERR("%s called with invalid channel", __FUNCTION__); | |
447 | return -EINVAL; | |
448 | } | |
449 | ||
450 | if (host->iso_listen_count[channel]++ == 0) { | |
451 | return host->driver->devctl(host, ISO_LISTEN_CHANNEL, channel); | |
452 | } | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | void hpsb_unlisten_channel(struct hpsb_highlevel *hl, struct hpsb_host *host, | |
458 | unsigned int channel) | |
459 | { | |
460 | if (channel > 63) { | |
461 | HPSB_ERR("%s called with invalid channel", __FUNCTION__); | |
462 | return; | |
463 | } | |
464 | ||
465 | if (--host->iso_listen_count[channel] == 0) { | |
466 | host->driver->devctl(host, ISO_UNLISTEN_CHANNEL, channel); | |
467 | } | |
468 | } | |
469 | ||
470 | static void init_hpsb_highlevel(struct hpsb_host *host) | |
471 | { | |
472 | INIT_LIST_HEAD(&dummy_zero_addr.host_list); | |
473 | INIT_LIST_HEAD(&dummy_zero_addr.hl_list); | |
474 | INIT_LIST_HEAD(&dummy_max_addr.host_list); | |
475 | INIT_LIST_HEAD(&dummy_max_addr.hl_list); | |
476 | ||
477 | dummy_zero_addr.op = dummy_max_addr.op = &dummy_ops; | |
478 | ||
479 | dummy_zero_addr.start = dummy_zero_addr.end = 0; | |
480 | dummy_max_addr.start = dummy_max_addr.end = ((u64) 1) << 48; | |
481 | ||
482 | list_add_tail(&dummy_zero_addr.host_list, &host->addr_space); | |
483 | list_add_tail(&dummy_max_addr.host_list, &host->addr_space); | |
484 | } | |
485 | ||
486 | void highlevel_add_host(struct hpsb_host *host) | |
487 | { | |
488 | struct hpsb_highlevel *hl; | |
489 | ||
490 | init_hpsb_highlevel(host); | |
491 | ||
492 | down_read(&hl_drivers_sem); | |
493 | list_for_each_entry(hl, &hl_drivers, hl_list) { | |
494 | if (hl->add_host) | |
495 | hl->add_host(host); | |
496 | } | |
497 | up_read(&hl_drivers_sem); | |
498 | if (host->update_config_rom) { | |
499 | if (hpsb_update_config_rom_image(host) < 0) | |
500 | HPSB_ERR("Failed to generate Configuration ROM image for " | |
501 | "host %s-%d", hl->name, host->id); | |
502 | } | |
503 | } | |
504 | ||
505 | void highlevel_remove_host(struct hpsb_host *host) | |
506 | { | |
507 | struct hpsb_highlevel *hl; | |
508 | ||
509 | down_read(&hl_drivers_sem); | |
510 | list_for_each_entry(hl, &hl_drivers, hl_list) | |
511 | __unregister_host(hl, host, 0); | |
512 | up_read(&hl_drivers_sem); | |
513 | } | |
514 | ||
515 | void highlevel_host_reset(struct hpsb_host *host) | |
516 | { | |
517 | struct hpsb_highlevel *hl; | |
518 | ||
519 | read_lock(&hl_irqs_lock); | |
520 | list_for_each_entry(hl, &hl_irqs, irq_list) { | |
521 | if (hl->host_reset) | |
522 | hl->host_reset(host); | |
523 | } | |
524 | read_unlock(&hl_irqs_lock); | |
525 | } | |
526 | ||
527 | void highlevel_iso_receive(struct hpsb_host *host, void *data, size_t length) | |
528 | { | |
529 | struct hpsb_highlevel *hl; | |
530 | int channel = (((quadlet_t *)data)[0] >> 8) & 0x3f; | |
531 | ||
532 | read_lock(&hl_irqs_lock); | |
533 | list_for_each_entry(hl, &hl_irqs, irq_list) { | |
534 | if (hl->iso_receive) | |
535 | hl->iso_receive(host, channel, data, length); | |
536 | } | |
537 | read_unlock(&hl_irqs_lock); | |
538 | } | |
539 | ||
540 | void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction, | |
541 | void *data, size_t length) | |
542 | { | |
543 | struct hpsb_highlevel *hl; | |
544 | int cts = ((quadlet_t *)data)[0] >> 4; | |
545 | ||
546 | read_lock(&hl_irqs_lock); | |
547 | list_for_each_entry(hl, &hl_irqs, irq_list) { | |
548 | if (hl->fcp_request) | |
549 | hl->fcp_request(host, nodeid, direction, cts, data, | |
550 | length); | |
551 | } | |
552 | read_unlock(&hl_irqs_lock); | |
553 | } | |
554 | ||
555 | int highlevel_read(struct hpsb_host *host, int nodeid, void *data, | |
556 | u64 addr, unsigned int length, u16 flags) | |
557 | { | |
558 | struct hpsb_address_serve *as; | |
559 | unsigned int partlength; | |
560 | int rcode = RCODE_ADDRESS_ERROR; | |
561 | ||
562 | read_lock(&addr_space_lock); | |
563 | ||
564 | list_for_each_entry(as, &host->addr_space, host_list) { | |
565 | if (as->start > addr) | |
566 | break; | |
567 | ||
568 | if (as->end > addr) { | |
569 | partlength = min(as->end - addr, (u64) length); | |
570 | ||
571 | if (as->op->read) { | |
572 | rcode = as->op->read(host, nodeid, data, | |
573 | addr, partlength, flags); | |
574 | } else { | |
575 | rcode = RCODE_TYPE_ERROR; | |
576 | } | |
577 | ||
578 | data += partlength; | |
579 | length -= partlength; | |
580 | addr += partlength; | |
581 | ||
582 | if ((rcode != RCODE_COMPLETE) || !length) { | |
583 | break; | |
584 | } | |
585 | } | |
586 | } | |
587 | ||
588 | read_unlock(&addr_space_lock); | |
589 | ||
590 | if (length && (rcode == RCODE_COMPLETE)) { | |
591 | rcode = RCODE_ADDRESS_ERROR; | |
592 | } | |
593 | ||
594 | return rcode; | |
595 | } | |
596 | ||
597 | int highlevel_write(struct hpsb_host *host, int nodeid, int destid, | |
598 | void *data, u64 addr, unsigned int length, u16 flags) | |
599 | { | |
600 | struct hpsb_address_serve *as; | |
601 | unsigned int partlength; | |
602 | int rcode = RCODE_ADDRESS_ERROR; | |
603 | ||
604 | read_lock(&addr_space_lock); | |
605 | ||
606 | list_for_each_entry(as, &host->addr_space, host_list) { | |
607 | if (as->start > addr) | |
608 | break; | |
609 | ||
610 | if (as->end > addr) { | |
611 | partlength = min(as->end - addr, (u64) length); | |
612 | ||
613 | if (as->op->write) { | |
614 | rcode = as->op->write(host, nodeid, destid, | |
615 | data, addr, partlength, flags); | |
616 | } else { | |
617 | rcode = RCODE_TYPE_ERROR; | |
618 | } | |
619 | ||
620 | data += partlength; | |
621 | length -= partlength; | |
622 | addr += partlength; | |
623 | ||
624 | if ((rcode != RCODE_COMPLETE) || !length) { | |
625 | break; | |
626 | } | |
627 | } | |
628 | } | |
629 | ||
630 | read_unlock(&addr_space_lock); | |
631 | ||
632 | if (length && (rcode == RCODE_COMPLETE)) { | |
633 | rcode = RCODE_ADDRESS_ERROR; | |
634 | } | |
635 | ||
636 | return rcode; | |
637 | } | |
638 | ||
639 | ||
640 | int highlevel_lock(struct hpsb_host *host, int nodeid, quadlet_t *store, | |
641 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, u16 flags) | |
642 | { | |
643 | struct hpsb_address_serve *as; | |
644 | int rcode = RCODE_ADDRESS_ERROR; | |
645 | ||
646 | read_lock(&addr_space_lock); | |
647 | ||
648 | list_for_each_entry(as, &host->addr_space, host_list) { | |
649 | if (as->start > addr) | |
650 | break; | |
651 | ||
652 | if (as->end > addr) { | |
653 | if (as->op->lock) { | |
654 | rcode = as->op->lock(host, nodeid, store, addr, | |
655 | data, arg, ext_tcode, flags); | |
656 | } else { | |
657 | rcode = RCODE_TYPE_ERROR; | |
658 | } | |
659 | ||
660 | break; | |
661 | } | |
662 | } | |
663 | ||
664 | read_unlock(&addr_space_lock); | |
665 | ||
666 | return rcode; | |
667 | } | |
668 | ||
669 | int highlevel_lock64(struct hpsb_host *host, int nodeid, octlet_t *store, | |
670 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, u16 flags) | |
671 | { | |
672 | struct hpsb_address_serve *as; | |
673 | int rcode = RCODE_ADDRESS_ERROR; | |
674 | ||
675 | read_lock(&addr_space_lock); | |
676 | ||
677 | list_for_each_entry(as, &host->addr_space, host_list) { | |
678 | if (as->start > addr) | |
679 | break; | |
680 | ||
681 | if (as->end > addr) { | |
682 | if (as->op->lock64) { | |
683 | rcode = as->op->lock64(host, nodeid, store, | |
684 | addr, data, arg, | |
685 | ext_tcode, flags); | |
686 | } else { | |
687 | rcode = RCODE_TYPE_ERROR; | |
688 | } | |
689 | ||
690 | break; | |
691 | } | |
692 | } | |
693 | ||
694 | read_unlock(&addr_space_lock); | |
695 | ||
696 | return rcode; | |
697 | } |