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1da177e4 LT |
1 | /* |
2 | * IEEE 1394 for Linux | |
3 | * | |
4 | * Raw interface to the bus | |
5 | * | |
6 | * Copyright (C) 1999, 2000 Andreas E. Bombe | |
7 | * 2001, 2002 Manfred Weihs <weihs@ict.tuwien.ac.at> | |
8 | * 2002 Christian Toegel <christian.toegel@gmx.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 | * configuration ROM manipulation | |
18 | * address range mapping | |
19 | * adaptation for new (transparent) loopback mechanism | |
20 | * sending of arbitrary async packets | |
21 | * Christian Toegel <christian.toegel@gmx.at> | |
22 | * address range mapping | |
23 | * lock64 request | |
24 | * transmit physical packet | |
25 | * busreset notification control (switch on/off) | |
26 | * busreset with selection of type (short/long) | |
27 | * request_reply | |
28 | */ | |
29 | ||
30 | #include <linux/kernel.h> | |
31 | #include <linux/list.h> | |
32 | #include <linux/string.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/fs.h> | |
35 | #include <linux/poll.h> | |
36 | #include <linux/module.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/smp_lock.h> | |
39 | #include <linux/interrupt.h> | |
40 | #include <linux/vmalloc.h> | |
41 | #include <linux/cdev.h> | |
42 | #include <asm/uaccess.h> | |
43 | #include <asm/atomic.h> | |
44 | #include <linux/devfs_fs_kernel.h> | |
45 | ||
46 | #include "csr1212.h" | |
47 | #include "ieee1394.h" | |
48 | #include "ieee1394_types.h" | |
49 | #include "ieee1394_core.h" | |
50 | #include "nodemgr.h" | |
51 | #include "hosts.h" | |
52 | #include "highlevel.h" | |
53 | #include "iso.h" | |
54 | #include "ieee1394_transactions.h" | |
55 | #include "raw1394.h" | |
56 | #include "raw1394-private.h" | |
57 | ||
58 | #define int2ptr(x) ((void __user *)(unsigned long)x) | |
59 | #define ptr2int(x) ((u64)(unsigned long)(void __user *)x) | |
60 | ||
61 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG | |
62 | #define RAW1394_DEBUG | |
63 | #endif | |
64 | ||
65 | #ifdef RAW1394_DEBUG | |
66 | #define DBGMSG(fmt, args...) \ | |
67 | printk(KERN_INFO "raw1394:" fmt "\n" , ## args) | |
68 | #else | |
69 | #define DBGMSG(fmt, args...) | |
70 | #endif | |
71 | ||
72 | static LIST_HEAD(host_info_list); | |
73 | static int host_count; | |
74 | static DEFINE_SPINLOCK(host_info_lock); | |
75 | static atomic_t internal_generation = ATOMIC_INIT(0); | |
76 | ||
77 | static atomic_t iso_buffer_size; | |
78 | static const int iso_buffer_max = 4 * 1024 * 1024; /* 4 MB */ | |
79 | ||
80 | static struct hpsb_highlevel raw1394_highlevel; | |
81 | ||
82 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, | |
83 | u64 addr, size_t length, u16 flags); | |
84 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, | |
85 | quadlet_t * data, u64 addr, size_t length, u16 flags); | |
86 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, | |
87 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, | |
88 | u16 flags); | |
89 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, | |
90 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, | |
91 | u16 flags); | |
92 | static struct hpsb_address_ops arm_ops = { | |
93 | .read = arm_read, | |
94 | .write = arm_write, | |
95 | .lock = arm_lock, | |
96 | .lock64 = arm_lock64, | |
97 | }; | |
98 | ||
99 | static void queue_complete_cb(struct pending_request *req); | |
100 | ||
dd0fc66f | 101 | static struct pending_request *__alloc_pending_request(gfp_t flags) |
1da177e4 LT |
102 | { |
103 | struct pending_request *req; | |
104 | ||
105 | req = (struct pending_request *)kmalloc(sizeof(struct pending_request), | |
106 | flags); | |
107 | if (req != NULL) { | |
108 | memset(req, 0, sizeof(struct pending_request)); | |
109 | INIT_LIST_HEAD(&req->list); | |
110 | } | |
111 | ||
112 | return req; | |
113 | } | |
114 | ||
115 | static inline struct pending_request *alloc_pending_request(void) | |
116 | { | |
117 | return __alloc_pending_request(SLAB_KERNEL); | |
118 | } | |
119 | ||
120 | static void free_pending_request(struct pending_request *req) | |
121 | { | |
122 | if (req->ibs) { | |
123 | if (atomic_dec_and_test(&req->ibs->refcount)) { | |
124 | atomic_sub(req->ibs->data_size, &iso_buffer_size); | |
125 | kfree(req->ibs); | |
126 | } | |
127 | } else if (req->free_data) { | |
128 | kfree(req->data); | |
129 | } | |
130 | hpsb_free_packet(req->packet); | |
131 | kfree(req); | |
132 | } | |
133 | ||
134 | /* fi->reqlists_lock must be taken */ | |
135 | static void __queue_complete_req(struct pending_request *req) | |
136 | { | |
137 | struct file_info *fi = req->file_info; | |
138 | list_del(&req->list); | |
139 | list_add_tail(&req->list, &fi->req_complete); | |
140 | ||
141 | up(&fi->complete_sem); | |
142 | wake_up_interruptible(&fi->poll_wait_complete); | |
143 | } | |
144 | ||
145 | static void queue_complete_req(struct pending_request *req) | |
146 | { | |
147 | unsigned long flags; | |
148 | struct file_info *fi = req->file_info; | |
149 | ||
150 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
151 | __queue_complete_req(req); | |
152 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
153 | } | |
154 | ||
155 | static void queue_complete_cb(struct pending_request *req) | |
156 | { | |
157 | struct hpsb_packet *packet = req->packet; | |
158 | int rcode = (packet->header[1] >> 12) & 0xf; | |
159 | ||
160 | switch (packet->ack_code) { | |
161 | case ACKX_NONE: | |
162 | case ACKX_SEND_ERROR: | |
163 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
164 | break; | |
165 | case ACKX_ABORTED: | |
166 | req->req.error = RAW1394_ERROR_ABORTED; | |
167 | break; | |
168 | case ACKX_TIMEOUT: | |
169 | req->req.error = RAW1394_ERROR_TIMEOUT; | |
170 | break; | |
171 | default: | |
172 | req->req.error = (packet->ack_code << 16) | rcode; | |
173 | break; | |
174 | } | |
175 | ||
176 | if (!((packet->ack_code == ACK_PENDING) && (rcode == RCODE_COMPLETE))) { | |
177 | req->req.length = 0; | |
178 | } | |
179 | ||
180 | if ((req->req.type == RAW1394_REQ_ASYNC_READ) || | |
181 | (req->req.type == RAW1394_REQ_ASYNC_WRITE) || | |
182 | (req->req.type == RAW1394_REQ_ASYNC_STREAM) || | |
183 | (req->req.type == RAW1394_REQ_LOCK) || | |
184 | (req->req.type == RAW1394_REQ_LOCK64)) | |
185 | hpsb_free_tlabel(packet); | |
186 | ||
187 | queue_complete_req(req); | |
188 | } | |
189 | ||
190 | static void add_host(struct hpsb_host *host) | |
191 | { | |
192 | struct host_info *hi; | |
193 | unsigned long flags; | |
194 | ||
195 | hi = (struct host_info *)kmalloc(sizeof(struct host_info), GFP_KERNEL); | |
196 | ||
197 | if (hi != NULL) { | |
198 | INIT_LIST_HEAD(&hi->list); | |
199 | hi->host = host; | |
200 | INIT_LIST_HEAD(&hi->file_info_list); | |
201 | ||
202 | spin_lock_irqsave(&host_info_lock, flags); | |
203 | list_add_tail(&hi->list, &host_info_list); | |
204 | host_count++; | |
205 | spin_unlock_irqrestore(&host_info_lock, flags); | |
206 | } | |
207 | ||
208 | atomic_inc(&internal_generation); | |
209 | } | |
210 | ||
211 | static struct host_info *find_host_info(struct hpsb_host *host) | |
212 | { | |
213 | struct host_info *hi; | |
214 | ||
215 | list_for_each_entry(hi, &host_info_list, list) | |
216 | if (hi->host == host) | |
217 | return hi; | |
218 | ||
219 | return NULL; | |
220 | } | |
221 | ||
222 | static void remove_host(struct hpsb_host *host) | |
223 | { | |
224 | struct host_info *hi; | |
225 | unsigned long flags; | |
226 | ||
227 | spin_lock_irqsave(&host_info_lock, flags); | |
228 | hi = find_host_info(host); | |
229 | ||
230 | if (hi != NULL) { | |
231 | list_del(&hi->list); | |
232 | host_count--; | |
233 | /* | |
234 | FIXME: address ranges should be removed | |
235 | and fileinfo states should be initialized | |
236 | (including setting generation to | |
237 | internal-generation ...) | |
238 | */ | |
239 | } | |
240 | spin_unlock_irqrestore(&host_info_lock, flags); | |
241 | ||
242 | if (hi == NULL) { | |
243 | printk(KERN_ERR "raw1394: attempt to remove unknown host " | |
244 | "0x%p\n", host); | |
245 | return; | |
246 | } | |
247 | ||
248 | kfree(hi); | |
249 | ||
250 | atomic_inc(&internal_generation); | |
251 | } | |
252 | ||
253 | static void host_reset(struct hpsb_host *host) | |
254 | { | |
255 | unsigned long flags; | |
256 | struct host_info *hi; | |
257 | struct file_info *fi; | |
258 | struct pending_request *req; | |
259 | ||
260 | spin_lock_irqsave(&host_info_lock, flags); | |
261 | hi = find_host_info(host); | |
262 | ||
263 | if (hi != NULL) { | |
264 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
265 | if (fi->notification == RAW1394_NOTIFY_ON) { | |
266 | req = __alloc_pending_request(SLAB_ATOMIC); | |
267 | ||
268 | if (req != NULL) { | |
269 | req->file_info = fi; | |
270 | req->req.type = RAW1394_REQ_BUS_RESET; | |
271 | req->req.generation = | |
272 | get_hpsb_generation(host); | |
273 | req->req.misc = (host->node_id << 16) | |
274 | | host->node_count; | |
275 | if (fi->protocol_version > 3) { | |
276 | req->req.misc |= | |
277 | (NODEID_TO_NODE | |
278 | (host->irm_id) | |
279 | << 8); | |
280 | } | |
281 | ||
282 | queue_complete_req(req); | |
283 | } | |
284 | } | |
285 | } | |
286 | } | |
287 | spin_unlock_irqrestore(&host_info_lock, flags); | |
288 | } | |
289 | ||
290 | static void iso_receive(struct hpsb_host *host, int channel, quadlet_t * data, | |
291 | size_t length) | |
292 | { | |
293 | unsigned long flags; | |
294 | struct host_info *hi; | |
295 | struct file_info *fi; | |
296 | struct pending_request *req, *req_next; | |
297 | struct iso_block_store *ibs = NULL; | |
298 | LIST_HEAD(reqs); | |
299 | ||
300 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { | |
301 | HPSB_INFO("dropped iso packet"); | |
302 | return; | |
303 | } | |
304 | ||
305 | spin_lock_irqsave(&host_info_lock, flags); | |
306 | hi = find_host_info(host); | |
307 | ||
308 | if (hi != NULL) { | |
309 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
310 | if (!(fi->listen_channels & (1ULL << channel))) | |
311 | continue; | |
312 | ||
313 | req = __alloc_pending_request(SLAB_ATOMIC); | |
314 | if (!req) | |
315 | break; | |
316 | ||
317 | if (!ibs) { | |
318 | ibs = kmalloc(sizeof(struct iso_block_store) | |
319 | + length, SLAB_ATOMIC); | |
320 | if (!ibs) { | |
321 | kfree(req); | |
322 | break; | |
323 | } | |
324 | ||
325 | atomic_add(length, &iso_buffer_size); | |
326 | atomic_set(&ibs->refcount, 0); | |
327 | ibs->data_size = length; | |
328 | memcpy(ibs->data, data, length); | |
329 | } | |
330 | ||
331 | atomic_inc(&ibs->refcount); | |
332 | ||
333 | req->file_info = fi; | |
334 | req->ibs = ibs; | |
335 | req->data = ibs->data; | |
336 | req->req.type = RAW1394_REQ_ISO_RECEIVE; | |
337 | req->req.generation = get_hpsb_generation(host); | |
338 | req->req.misc = 0; | |
339 | req->req.recvb = ptr2int(fi->iso_buffer); | |
340 | req->req.length = min(length, fi->iso_buffer_length); | |
341 | ||
342 | list_add_tail(&req->list, &reqs); | |
343 | } | |
344 | } | |
345 | spin_unlock_irqrestore(&host_info_lock, flags); | |
346 | ||
347 | list_for_each_entry_safe(req, req_next, &reqs, list) | |
348 | queue_complete_req(req); | |
349 | } | |
350 | ||
351 | static void fcp_request(struct hpsb_host *host, int nodeid, int direction, | |
352 | int cts, u8 * data, size_t length) | |
353 | { | |
354 | unsigned long flags; | |
355 | struct host_info *hi; | |
356 | struct file_info *fi; | |
357 | struct pending_request *req, *req_next; | |
358 | struct iso_block_store *ibs = NULL; | |
359 | LIST_HEAD(reqs); | |
360 | ||
361 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { | |
362 | HPSB_INFO("dropped fcp request"); | |
363 | return; | |
364 | } | |
365 | ||
366 | spin_lock_irqsave(&host_info_lock, flags); | |
367 | hi = find_host_info(host); | |
368 | ||
369 | if (hi != NULL) { | |
370 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
371 | if (!fi->fcp_buffer) | |
372 | continue; | |
373 | ||
374 | req = __alloc_pending_request(SLAB_ATOMIC); | |
375 | if (!req) | |
376 | break; | |
377 | ||
378 | if (!ibs) { | |
379 | ibs = kmalloc(sizeof(struct iso_block_store) | |
380 | + length, SLAB_ATOMIC); | |
381 | if (!ibs) { | |
382 | kfree(req); | |
383 | break; | |
384 | } | |
385 | ||
386 | atomic_add(length, &iso_buffer_size); | |
387 | atomic_set(&ibs->refcount, 0); | |
388 | ibs->data_size = length; | |
389 | memcpy(ibs->data, data, length); | |
390 | } | |
391 | ||
392 | atomic_inc(&ibs->refcount); | |
393 | ||
394 | req->file_info = fi; | |
395 | req->ibs = ibs; | |
396 | req->data = ibs->data; | |
397 | req->req.type = RAW1394_REQ_FCP_REQUEST; | |
398 | req->req.generation = get_hpsb_generation(host); | |
399 | req->req.misc = nodeid | (direction << 16); | |
400 | req->req.recvb = ptr2int(fi->fcp_buffer); | |
401 | req->req.length = length; | |
402 | ||
403 | list_add_tail(&req->list, &reqs); | |
404 | } | |
405 | } | |
406 | spin_unlock_irqrestore(&host_info_lock, flags); | |
407 | ||
408 | list_for_each_entry_safe(req, req_next, &reqs, list) | |
409 | queue_complete_req(req); | |
410 | } | |
411 | ||
412 | static ssize_t raw1394_read(struct file *file, char __user * buffer, | |
413 | size_t count, loff_t * offset_is_ignored) | |
414 | { | |
4a9949d7 | 415 | unsigned long flags; |
1da177e4 LT |
416 | struct file_info *fi = (struct file_info *)file->private_data; |
417 | struct list_head *lh; | |
418 | struct pending_request *req; | |
419 | ssize_t ret; | |
420 | ||
421 | if (count != sizeof(struct raw1394_request)) { | |
422 | return -EINVAL; | |
423 | } | |
424 | ||
425 | if (!access_ok(VERIFY_WRITE, buffer, count)) { | |
426 | return -EFAULT; | |
427 | } | |
428 | ||
429 | if (file->f_flags & O_NONBLOCK) { | |
430 | if (down_trylock(&fi->complete_sem)) { | |
431 | return -EAGAIN; | |
432 | } | |
433 | } else { | |
434 | if (down_interruptible(&fi->complete_sem)) { | |
435 | return -ERESTARTSYS; | |
436 | } | |
437 | } | |
438 | ||
4a9949d7 | 439 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 LT |
440 | lh = fi->req_complete.next; |
441 | list_del(lh); | |
4a9949d7 | 442 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
443 | |
444 | req = list_entry(lh, struct pending_request, list); | |
445 | ||
446 | if (req->req.length) { | |
447 | if (copy_to_user(int2ptr(req->req.recvb), req->data, | |
448 | req->req.length)) { | |
449 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
450 | } | |
451 | } | |
452 | if (copy_to_user(buffer, &req->req, sizeof(req->req))) { | |
453 | ret = -EFAULT; | |
454 | goto out; | |
455 | } | |
456 | ||
457 | ret = (ssize_t) sizeof(struct raw1394_request); | |
458 | out: | |
459 | free_pending_request(req); | |
460 | return ret; | |
461 | } | |
462 | ||
463 | static int state_opened(struct file_info *fi, struct pending_request *req) | |
464 | { | |
465 | if (req->req.type == RAW1394_REQ_INITIALIZE) { | |
466 | switch (req->req.misc) { | |
467 | case RAW1394_KERNELAPI_VERSION: | |
468 | case 3: | |
469 | fi->state = initialized; | |
470 | fi->protocol_version = req->req.misc; | |
471 | req->req.error = RAW1394_ERROR_NONE; | |
472 | req->req.generation = atomic_read(&internal_generation); | |
473 | break; | |
474 | ||
475 | default: | |
476 | req->req.error = RAW1394_ERROR_COMPAT; | |
477 | req->req.misc = RAW1394_KERNELAPI_VERSION; | |
478 | } | |
479 | } else { | |
480 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
481 | } | |
482 | ||
483 | req->req.length = 0; | |
484 | queue_complete_req(req); | |
485 | return sizeof(struct raw1394_request); | |
486 | } | |
487 | ||
488 | static int state_initialized(struct file_info *fi, struct pending_request *req) | |
489 | { | |
4a9949d7 | 490 | unsigned long flags; |
1da177e4 LT |
491 | struct host_info *hi; |
492 | struct raw1394_khost_list *khl; | |
493 | ||
494 | if (req->req.generation != atomic_read(&internal_generation)) { | |
495 | req->req.error = RAW1394_ERROR_GENERATION; | |
496 | req->req.generation = atomic_read(&internal_generation); | |
497 | req->req.length = 0; | |
498 | queue_complete_req(req); | |
499 | return sizeof(struct raw1394_request); | |
500 | } | |
501 | ||
502 | switch (req->req.type) { | |
503 | case RAW1394_REQ_LIST_CARDS: | |
4a9949d7 | 504 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 LT |
505 | khl = kmalloc(sizeof(struct raw1394_khost_list) * host_count, |
506 | SLAB_ATOMIC); | |
507 | ||
508 | if (khl != NULL) { | |
509 | req->req.misc = host_count; | |
510 | req->data = (quadlet_t *) khl; | |
511 | ||
512 | list_for_each_entry(hi, &host_info_list, list) { | |
513 | khl->nodes = hi->host->node_count; | |
514 | strcpy(khl->name, hi->host->driver->name); | |
515 | khl++; | |
516 | } | |
517 | } | |
4a9949d7 | 518 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
519 | |
520 | if (khl != NULL) { | |
521 | req->req.error = RAW1394_ERROR_NONE; | |
522 | req->req.length = min(req->req.length, | |
523 | (u32) (sizeof | |
524 | (struct raw1394_khost_list) | |
525 | * req->req.misc)); | |
526 | req->free_data = 1; | |
527 | } else { | |
528 | return -ENOMEM; | |
529 | } | |
530 | break; | |
531 | ||
532 | case RAW1394_REQ_SET_CARD: | |
4a9949d7 | 533 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 LT |
534 | if (req->req.misc < host_count) { |
535 | list_for_each_entry(hi, &host_info_list, list) { | |
536 | if (!req->req.misc--) | |
537 | break; | |
538 | } | |
539 | get_device(&hi->host->device); // XXX Need to handle failure case | |
540 | list_add_tail(&fi->list, &hi->file_info_list); | |
541 | fi->host = hi->host; | |
542 | fi->state = connected; | |
543 | ||
544 | req->req.error = RAW1394_ERROR_NONE; | |
545 | req->req.generation = get_hpsb_generation(fi->host); | |
546 | req->req.misc = (fi->host->node_id << 16) | |
547 | | fi->host->node_count; | |
548 | if (fi->protocol_version > 3) { | |
549 | req->req.misc |= | |
550 | NODEID_TO_NODE(fi->host->irm_id) << 8; | |
551 | } | |
552 | } else { | |
553 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
554 | } | |
4a9949d7 | 555 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
556 | |
557 | req->req.length = 0; | |
558 | break; | |
559 | ||
560 | default: | |
561 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
562 | req->req.length = 0; | |
563 | break; | |
564 | } | |
565 | ||
566 | queue_complete_req(req); | |
567 | return sizeof(struct raw1394_request); | |
568 | } | |
569 | ||
570 | static void handle_iso_listen(struct file_info *fi, struct pending_request *req) | |
571 | { | |
572 | int channel = req->req.misc; | |
573 | ||
1da177e4 LT |
574 | if ((channel > 63) || (channel < -64)) { |
575 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
576 | } else if (channel >= 0) { | |
577 | /* allocate channel req.misc */ | |
578 | if (fi->listen_channels & (1ULL << channel)) { | |
579 | req->req.error = RAW1394_ERROR_ALREADY; | |
580 | } else { | |
581 | if (hpsb_listen_channel | |
582 | (&raw1394_highlevel, fi->host, channel)) { | |
583 | req->req.error = RAW1394_ERROR_ALREADY; | |
584 | } else { | |
585 | fi->listen_channels |= 1ULL << channel; | |
586 | fi->iso_buffer = int2ptr(req->req.recvb); | |
587 | fi->iso_buffer_length = req->req.length; | |
588 | } | |
589 | } | |
590 | } else { | |
591 | /* deallocate channel (one's complement neg) req.misc */ | |
592 | channel = ~channel; | |
593 | ||
594 | if (fi->listen_channels & (1ULL << channel)) { | |
595 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, | |
596 | channel); | |
597 | fi->listen_channels &= ~(1ULL << channel); | |
598 | } else { | |
599 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
600 | } | |
601 | } | |
602 | ||
603 | req->req.length = 0; | |
604 | queue_complete_req(req); | |
1da177e4 LT |
605 | } |
606 | ||
607 | static void handle_fcp_listen(struct file_info *fi, struct pending_request *req) | |
608 | { | |
609 | if (req->req.misc) { | |
610 | if (fi->fcp_buffer) { | |
611 | req->req.error = RAW1394_ERROR_ALREADY; | |
612 | } else { | |
613 | fi->fcp_buffer = int2ptr(req->req.recvb); | |
614 | } | |
615 | } else { | |
616 | if (!fi->fcp_buffer) { | |
617 | req->req.error = RAW1394_ERROR_ALREADY; | |
618 | } else { | |
619 | fi->fcp_buffer = NULL; | |
620 | } | |
621 | } | |
622 | ||
623 | req->req.length = 0; | |
624 | queue_complete_req(req); | |
625 | } | |
626 | ||
627 | static int handle_async_request(struct file_info *fi, | |
628 | struct pending_request *req, int node) | |
629 | { | |
4a9949d7 | 630 | unsigned long flags; |
1da177e4 LT |
631 | struct hpsb_packet *packet = NULL; |
632 | u64 addr = req->req.address & 0xffffffffffffULL; | |
633 | ||
634 | switch (req->req.type) { | |
635 | case RAW1394_REQ_ASYNC_READ: | |
636 | DBGMSG("read_request called"); | |
637 | packet = | |
638 | hpsb_make_readpacket(fi->host, node, addr, req->req.length); | |
639 | ||
640 | if (!packet) | |
641 | return -ENOMEM; | |
642 | ||
643 | if (req->req.length == 4) | |
644 | req->data = &packet->header[3]; | |
645 | else | |
646 | req->data = packet->data; | |
647 | ||
648 | break; | |
649 | ||
650 | case RAW1394_REQ_ASYNC_WRITE: | |
651 | DBGMSG("write_request called"); | |
652 | ||
653 | packet = hpsb_make_writepacket(fi->host, node, addr, NULL, | |
654 | req->req.length); | |
655 | if (!packet) | |
656 | return -ENOMEM; | |
657 | ||
658 | if (req->req.length == 4) { | |
659 | if (copy_from_user | |
660 | (&packet->header[3], int2ptr(req->req.sendb), | |
661 | req->req.length)) | |
662 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
663 | } else { | |
664 | if (copy_from_user | |
665 | (packet->data, int2ptr(req->req.sendb), | |
666 | req->req.length)) | |
667 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
668 | } | |
669 | ||
670 | req->req.length = 0; | |
671 | break; | |
672 | ||
673 | case RAW1394_REQ_ASYNC_STREAM: | |
674 | DBGMSG("stream_request called"); | |
675 | ||
676 | packet = | |
677 | hpsb_make_streampacket(fi->host, NULL, req->req.length, | |
678 | node & 0x3f /*channel */ , | |
679 | (req->req.misc >> 16) & 0x3, | |
680 | req->req.misc & 0xf); | |
681 | if (!packet) | |
682 | return -ENOMEM; | |
683 | ||
684 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
685 | req->req.length)) | |
686 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
687 | ||
688 | req->req.length = 0; | |
689 | break; | |
690 | ||
691 | case RAW1394_REQ_LOCK: | |
692 | DBGMSG("lock_request called"); | |
693 | if ((req->req.misc == EXTCODE_FETCH_ADD) | |
694 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { | |
695 | if (req->req.length != 4) { | |
696 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
697 | break; | |
698 | } | |
699 | } else { | |
700 | if (req->req.length != 8) { | |
701 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
702 | break; | |
703 | } | |
704 | } | |
705 | ||
706 | packet = hpsb_make_lockpacket(fi->host, node, addr, | |
707 | req->req.misc, NULL, 0); | |
708 | if (!packet) | |
709 | return -ENOMEM; | |
710 | ||
711 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
712 | req->req.length)) { | |
713 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
714 | break; | |
715 | } | |
716 | ||
717 | req->data = packet->data; | |
718 | req->req.length = 4; | |
719 | break; | |
720 | ||
721 | case RAW1394_REQ_LOCK64: | |
722 | DBGMSG("lock64_request called"); | |
723 | if ((req->req.misc == EXTCODE_FETCH_ADD) | |
724 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { | |
725 | if (req->req.length != 8) { | |
726 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
727 | break; | |
728 | } | |
729 | } else { | |
730 | if (req->req.length != 16) { | |
731 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
732 | break; | |
733 | } | |
734 | } | |
735 | packet = hpsb_make_lock64packet(fi->host, node, addr, | |
736 | req->req.misc, NULL, 0); | |
737 | if (!packet) | |
738 | return -ENOMEM; | |
739 | ||
740 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
741 | req->req.length)) { | |
742 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
743 | break; | |
744 | } | |
745 | ||
746 | req->data = packet->data; | |
747 | req->req.length = 8; | |
748 | break; | |
749 | ||
750 | default: | |
751 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
752 | } | |
753 | ||
754 | req->packet = packet; | |
755 | ||
756 | if (req->req.error) { | |
757 | req->req.length = 0; | |
758 | queue_complete_req(req); | |
759 | return sizeof(struct raw1394_request); | |
760 | } | |
761 | ||
762 | hpsb_set_packet_complete_task(packet, | |
763 | (void (*)(void *))queue_complete_cb, req); | |
764 | ||
4a9949d7 | 765 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 766 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 767 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
768 | |
769 | packet->generation = req->req.generation; | |
770 | ||
771 | if (hpsb_send_packet(packet) < 0) { | |
772 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
773 | req->req.length = 0; | |
774 | hpsb_free_tlabel(packet); | |
775 | queue_complete_req(req); | |
776 | } | |
777 | return sizeof(struct raw1394_request); | |
778 | } | |
779 | ||
780 | static int handle_iso_send(struct file_info *fi, struct pending_request *req, | |
781 | int channel) | |
782 | { | |
4a9949d7 | 783 | unsigned long flags; |
1da177e4 LT |
784 | struct hpsb_packet *packet; |
785 | ||
786 | packet = hpsb_make_isopacket(fi->host, req->req.length, channel & 0x3f, | |
787 | (req->req.misc >> 16) & 0x3, | |
788 | req->req.misc & 0xf); | |
789 | if (!packet) | |
790 | return -ENOMEM; | |
791 | ||
792 | packet->speed_code = req->req.address & 0x3; | |
793 | ||
794 | req->packet = packet; | |
795 | ||
796 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
797 | req->req.length)) { | |
798 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
799 | req->req.length = 0; | |
800 | queue_complete_req(req); | |
801 | return sizeof(struct raw1394_request); | |
802 | } | |
803 | ||
804 | req->req.length = 0; | |
805 | hpsb_set_packet_complete_task(packet, | |
806 | (void (*)(void *))queue_complete_req, | |
807 | req); | |
808 | ||
4a9949d7 | 809 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 810 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 811 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
812 | |
813 | /* Update the generation of the packet just before sending. */ | |
814 | packet->generation = req->req.generation; | |
815 | ||
816 | if (hpsb_send_packet(packet) < 0) { | |
817 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
818 | queue_complete_req(req); | |
819 | } | |
820 | ||
821 | return sizeof(struct raw1394_request); | |
822 | } | |
823 | ||
824 | static int handle_async_send(struct file_info *fi, struct pending_request *req) | |
825 | { | |
4a9949d7 | 826 | unsigned long flags; |
1da177e4 LT |
827 | struct hpsb_packet *packet; |
828 | int header_length = req->req.misc & 0xffff; | |
829 | int expect_response = req->req.misc >> 16; | |
830 | ||
831 | if ((header_length > req->req.length) || (header_length < 12)) { | |
832 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
833 | req->req.length = 0; | |
834 | queue_complete_req(req); | |
835 | return sizeof(struct raw1394_request); | |
836 | } | |
837 | ||
838 | packet = hpsb_alloc_packet(req->req.length - header_length); | |
839 | req->packet = packet; | |
840 | if (!packet) | |
841 | return -ENOMEM; | |
842 | ||
843 | if (copy_from_user(packet->header, int2ptr(req->req.sendb), | |
844 | header_length)) { | |
845 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
846 | req->req.length = 0; | |
847 | queue_complete_req(req); | |
848 | return sizeof(struct raw1394_request); | |
849 | } | |
850 | ||
851 | if (copy_from_user | |
852 | (packet->data, int2ptr(req->req.sendb) + header_length, | |
853 | packet->data_size)) { | |
854 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
855 | req->req.length = 0; | |
856 | queue_complete_req(req); | |
857 | return sizeof(struct raw1394_request); | |
858 | } | |
859 | ||
860 | packet->type = hpsb_async; | |
861 | packet->node_id = packet->header[0] >> 16; | |
862 | packet->tcode = (packet->header[0] >> 4) & 0xf; | |
863 | packet->tlabel = (packet->header[0] >> 10) & 0x3f; | |
864 | packet->host = fi->host; | |
865 | packet->expect_response = expect_response; | |
866 | packet->header_size = header_length; | |
867 | packet->data_size = req->req.length - header_length; | |
868 | ||
869 | req->req.length = 0; | |
870 | hpsb_set_packet_complete_task(packet, | |
871 | (void (*)(void *))queue_complete_cb, req); | |
872 | ||
4a9949d7 | 873 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 874 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 875 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
876 | |
877 | /* Update the generation of the packet just before sending. */ | |
878 | packet->generation = req->req.generation; | |
879 | ||
880 | if (hpsb_send_packet(packet) < 0) { | |
881 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
882 | queue_complete_req(req); | |
883 | } | |
884 | ||
885 | return sizeof(struct raw1394_request); | |
886 | } | |
887 | ||
888 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, | |
889 | u64 addr, size_t length, u16 flags) | |
890 | { | |
4a9949d7 | 891 | unsigned long irqflags; |
1da177e4 LT |
892 | struct pending_request *req; |
893 | struct host_info *hi; | |
894 | struct file_info *fi = NULL; | |
895 | struct list_head *entry; | |
896 | struct arm_addr *arm_addr = NULL; | |
897 | struct arm_request *arm_req = NULL; | |
898 | struct arm_response *arm_resp = NULL; | |
899 | int found = 0, size = 0, rcode = -1; | |
900 | struct arm_request_response *arm_req_resp = NULL; | |
901 | ||
902 | DBGMSG("arm_read called by node: %X" | |
903 | "addr: %4.4x %8.8x length: %Zu", nodeid, | |
904 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), | |
905 | length); | |
4a9949d7 | 906 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
907 | hi = find_host_info(host); /* search address-entry */ |
908 | if (hi != NULL) { | |
909 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
910 | entry = fi->addr_list.next; | |
911 | while (entry != &(fi->addr_list)) { | |
912 | arm_addr = | |
913 | list_entry(entry, struct arm_addr, | |
914 | addr_list); | |
915 | if (((arm_addr->start) <= (addr)) | |
916 | && ((arm_addr->end) >= (addr + length))) { | |
917 | found = 1; | |
918 | break; | |
919 | } | |
920 | entry = entry->next; | |
921 | } | |
922 | if (found) { | |
923 | break; | |
924 | } | |
925 | } | |
926 | } | |
927 | rcode = -1; | |
928 | if (!found) { | |
929 | printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found" | |
930 | " -> rcode_address_error\n"); | |
4a9949d7 | 931 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
932 | return (RCODE_ADDRESS_ERROR); |
933 | } else { | |
934 | DBGMSG("arm_read addr_entry FOUND"); | |
935 | } | |
936 | if (arm_addr->rec_length < length) { | |
937 | DBGMSG("arm_read blocklength too big -> rcode_data_error"); | |
938 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ | |
939 | } | |
940 | if (rcode == -1) { | |
941 | if (arm_addr->access_rights & ARM_READ) { | |
942 | if (!(arm_addr->client_transactions & ARM_READ)) { | |
943 | memcpy(buffer, | |
944 | (arm_addr->addr_space_buffer) + (addr - | |
945 | (arm_addr-> | |
946 | start)), | |
947 | length); | |
948 | DBGMSG("arm_read -> (rcode_complete)"); | |
949 | rcode = RCODE_COMPLETE; | |
950 | } | |
951 | } else { | |
952 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
953 | DBGMSG("arm_read -> rcode_type_error (access denied)"); | |
954 | } | |
955 | } | |
956 | if (arm_addr->notification_options & ARM_READ) { | |
957 | DBGMSG("arm_read -> entering notification-section"); | |
958 | req = __alloc_pending_request(SLAB_ATOMIC); | |
959 | if (!req) { | |
960 | DBGMSG("arm_read -> rcode_conflict_error"); | |
4a9949d7 | 961 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
962 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
963 | The request may be retried */ | |
964 | } | |
965 | if (rcode == RCODE_COMPLETE) { | |
966 | size = | |
967 | sizeof(struct arm_request) + | |
968 | sizeof(struct arm_response) + | |
969 | length * sizeof(byte_t) + | |
970 | sizeof(struct arm_request_response); | |
971 | } else { | |
972 | size = | |
973 | sizeof(struct arm_request) + | |
974 | sizeof(struct arm_response) + | |
975 | sizeof(struct arm_request_response); | |
976 | } | |
977 | req->data = kmalloc(size, SLAB_ATOMIC); | |
978 | if (!(req->data)) { | |
979 | free_pending_request(req); | |
980 | DBGMSG("arm_read -> rcode_conflict_error"); | |
4a9949d7 | 981 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
982 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
983 | The request may be retried */ | |
984 | } | |
985 | req->free_data = 1; | |
986 | req->file_info = fi; | |
987 | req->req.type = RAW1394_REQ_ARM; | |
988 | req->req.generation = get_hpsb_generation(host); | |
989 | req->req.misc = | |
990 | (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF)); | |
991 | req->req.tag = arm_addr->arm_tag; | |
992 | req->req.recvb = arm_addr->recvb; | |
993 | req->req.length = size; | |
994 | arm_req_resp = (struct arm_request_response *)(req->data); | |
995 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
996 | (sizeof | |
997 | (struct | |
998 | arm_request_response))); | |
999 | arm_resp = | |
1000 | (struct arm_response *)((byte_t *) (arm_req) + | |
1001 | (sizeof(struct arm_request))); | |
1002 | arm_req->buffer = NULL; | |
1003 | arm_resp->buffer = NULL; | |
1004 | if (rcode == RCODE_COMPLETE) { | |
1005 | byte_t *buf = | |
1006 | (byte_t *) arm_resp + sizeof(struct arm_response); | |
1007 | memcpy(buf, | |
1008 | (arm_addr->addr_space_buffer) + (addr - | |
1009 | (arm_addr-> | |
1010 | start)), | |
1011 | length); | |
1012 | arm_resp->buffer = | |
1013 | int2ptr((arm_addr->recvb) + | |
1014 | sizeof(struct arm_request_response) + | |
1015 | sizeof(struct arm_request) + | |
1016 | sizeof(struct arm_response)); | |
1017 | } | |
1018 | arm_resp->buffer_length = | |
1019 | (rcode == RCODE_COMPLETE) ? length : 0; | |
1020 | arm_resp->response_code = rcode; | |
1021 | arm_req->buffer_length = 0; | |
1022 | arm_req->generation = req->req.generation; | |
1023 | arm_req->extended_transaction_code = 0; | |
1024 | arm_req->destination_offset = addr; | |
1025 | arm_req->source_nodeid = nodeid; | |
1026 | arm_req->destination_nodeid = host->node_id; | |
1027 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1028 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1029 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1030 | sizeof(struct | |
1031 | arm_request_response)); | |
1032 | arm_req_resp->response = | |
1033 | int2ptr((arm_addr->recvb) + | |
1034 | sizeof(struct arm_request_response) + | |
1035 | sizeof(struct arm_request)); | |
1036 | queue_complete_req(req); | |
1037 | } | |
4a9949d7 | 1038 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1039 | return (rcode); |
1040 | } | |
1041 | ||
1042 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, | |
1043 | quadlet_t * data, u64 addr, size_t length, u16 flags) | |
1044 | { | |
4a9949d7 | 1045 | unsigned long irqflags; |
1da177e4 LT |
1046 | struct pending_request *req; |
1047 | struct host_info *hi; | |
1048 | struct file_info *fi = NULL; | |
1049 | struct list_head *entry; | |
1050 | struct arm_addr *arm_addr = NULL; | |
1051 | struct arm_request *arm_req = NULL; | |
1052 | struct arm_response *arm_resp = NULL; | |
1053 | int found = 0, size = 0, rcode = -1, length_conflict = 0; | |
1054 | struct arm_request_response *arm_req_resp = NULL; | |
1055 | ||
1056 | DBGMSG("arm_write called by node: %X" | |
1057 | "addr: %4.4x %8.8x length: %Zu", nodeid, | |
1058 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), | |
1059 | length); | |
4a9949d7 | 1060 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1061 | hi = find_host_info(host); /* search address-entry */ |
1062 | if (hi != NULL) { | |
1063 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1064 | entry = fi->addr_list.next; | |
1065 | while (entry != &(fi->addr_list)) { | |
1066 | arm_addr = | |
1067 | list_entry(entry, struct arm_addr, | |
1068 | addr_list); | |
1069 | if (((arm_addr->start) <= (addr)) | |
1070 | && ((arm_addr->end) >= (addr + length))) { | |
1071 | found = 1; | |
1072 | break; | |
1073 | } | |
1074 | entry = entry->next; | |
1075 | } | |
1076 | if (found) { | |
1077 | break; | |
1078 | } | |
1079 | } | |
1080 | } | |
1081 | rcode = -1; | |
1082 | if (!found) { | |
1083 | printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found" | |
1084 | " -> rcode_address_error\n"); | |
4a9949d7 | 1085 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1086 | return (RCODE_ADDRESS_ERROR); |
1087 | } else { | |
1088 | DBGMSG("arm_write addr_entry FOUND"); | |
1089 | } | |
1090 | if (arm_addr->rec_length < length) { | |
1091 | DBGMSG("arm_write blocklength too big -> rcode_data_error"); | |
1092 | length_conflict = 1; | |
1093 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ | |
1094 | } | |
1095 | if (rcode == -1) { | |
1096 | if (arm_addr->access_rights & ARM_WRITE) { | |
1097 | if (!(arm_addr->client_transactions & ARM_WRITE)) { | |
1098 | memcpy((arm_addr->addr_space_buffer) + | |
1099 | (addr - (arm_addr->start)), data, | |
1100 | length); | |
1101 | DBGMSG("arm_write -> (rcode_complete)"); | |
1102 | rcode = RCODE_COMPLETE; | |
1103 | } | |
1104 | } else { | |
1105 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1106 | DBGMSG("arm_write -> rcode_type_error (access denied)"); | |
1107 | } | |
1108 | } | |
1109 | if (arm_addr->notification_options & ARM_WRITE) { | |
1110 | DBGMSG("arm_write -> entering notification-section"); | |
1111 | req = __alloc_pending_request(SLAB_ATOMIC); | |
1112 | if (!req) { | |
1113 | DBGMSG("arm_write -> rcode_conflict_error"); | |
4a9949d7 | 1114 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1115 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1116 | The request my be retried */ | |
1117 | } | |
1118 | size = | |
1119 | sizeof(struct arm_request) + sizeof(struct arm_response) + | |
1120 | (length) * sizeof(byte_t) + | |
1121 | sizeof(struct arm_request_response); | |
1122 | req->data = kmalloc(size, SLAB_ATOMIC); | |
1123 | if (!(req->data)) { | |
1124 | free_pending_request(req); | |
1125 | DBGMSG("arm_write -> rcode_conflict_error"); | |
4a9949d7 | 1126 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1127 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1128 | The request may be retried */ | |
1129 | } | |
1130 | req->free_data = 1; | |
1131 | req->file_info = fi; | |
1132 | req->req.type = RAW1394_REQ_ARM; | |
1133 | req->req.generation = get_hpsb_generation(host); | |
1134 | req->req.misc = | |
1135 | (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF)); | |
1136 | req->req.tag = arm_addr->arm_tag; | |
1137 | req->req.recvb = arm_addr->recvb; | |
1138 | req->req.length = size; | |
1139 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1140 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1141 | (sizeof | |
1142 | (struct | |
1143 | arm_request_response))); | |
1144 | arm_resp = | |
1145 | (struct arm_response *)((byte_t *) (arm_req) + | |
1146 | (sizeof(struct arm_request))); | |
1147 | arm_resp->buffer = NULL; | |
1148 | memcpy((byte_t *) arm_resp + sizeof(struct arm_response), | |
1149 | data, length); | |
1150 | arm_req->buffer = int2ptr((arm_addr->recvb) + | |
1151 | sizeof(struct arm_request_response) + | |
1152 | sizeof(struct arm_request) + | |
1153 | sizeof(struct arm_response)); | |
1154 | arm_req->buffer_length = length; | |
1155 | arm_req->generation = req->req.generation; | |
1156 | arm_req->extended_transaction_code = 0; | |
1157 | arm_req->destination_offset = addr; | |
1158 | arm_req->source_nodeid = nodeid; | |
1159 | arm_req->destination_nodeid = destid; | |
1160 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1161 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1162 | arm_resp->buffer_length = 0; | |
1163 | arm_resp->response_code = rcode; | |
1164 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1165 | sizeof(struct | |
1166 | arm_request_response)); | |
1167 | arm_req_resp->response = | |
1168 | int2ptr((arm_addr->recvb) + | |
1169 | sizeof(struct arm_request_response) + | |
1170 | sizeof(struct arm_request)); | |
1171 | queue_complete_req(req); | |
1172 | } | |
4a9949d7 | 1173 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1174 | return (rcode); |
1175 | } | |
1176 | ||
1177 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, | |
1178 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, | |
1179 | u16 flags) | |
1180 | { | |
4a9949d7 | 1181 | unsigned long irqflags; |
1da177e4 LT |
1182 | struct pending_request *req; |
1183 | struct host_info *hi; | |
1184 | struct file_info *fi = NULL; | |
1185 | struct list_head *entry; | |
1186 | struct arm_addr *arm_addr = NULL; | |
1187 | struct arm_request *arm_req = NULL; | |
1188 | struct arm_response *arm_resp = NULL; | |
1189 | int found = 0, size = 0, rcode = -1; | |
1190 | quadlet_t old, new; | |
1191 | struct arm_request_response *arm_req_resp = NULL; | |
1192 | ||
1193 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || | |
1194 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { | |
1195 | DBGMSG("arm_lock called by node: %X " | |
1196 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X", | |
1197 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1198 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, | |
1199 | be32_to_cpu(data)); | |
1200 | } else { | |
1201 | DBGMSG("arm_lock called by node: %X " | |
1202 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X", | |
1203 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1204 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, | |
1205 | be32_to_cpu(data), be32_to_cpu(arg)); | |
1206 | } | |
4a9949d7 | 1207 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1208 | hi = find_host_info(host); /* search address-entry */ |
1209 | if (hi != NULL) { | |
1210 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1211 | entry = fi->addr_list.next; | |
1212 | while (entry != &(fi->addr_list)) { | |
1213 | arm_addr = | |
1214 | list_entry(entry, struct arm_addr, | |
1215 | addr_list); | |
1216 | if (((arm_addr->start) <= (addr)) | |
1217 | && ((arm_addr->end) >= | |
1218 | (addr + sizeof(*store)))) { | |
1219 | found = 1; | |
1220 | break; | |
1221 | } | |
1222 | entry = entry->next; | |
1223 | } | |
1224 | if (found) { | |
1225 | break; | |
1226 | } | |
1227 | } | |
1228 | } | |
1229 | rcode = -1; | |
1230 | if (!found) { | |
1231 | printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found" | |
1232 | " -> rcode_address_error\n"); | |
4a9949d7 | 1233 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1234 | return (RCODE_ADDRESS_ERROR); |
1235 | } else { | |
1236 | DBGMSG("arm_lock addr_entry FOUND"); | |
1237 | } | |
1238 | if (rcode == -1) { | |
1239 | if (arm_addr->access_rights & ARM_LOCK) { | |
1240 | if (!(arm_addr->client_transactions & ARM_LOCK)) { | |
1241 | memcpy(&old, | |
1242 | (arm_addr->addr_space_buffer) + (addr - | |
1243 | (arm_addr-> | |
1244 | start)), | |
1245 | sizeof(old)); | |
1246 | switch (ext_tcode) { | |
1247 | case (EXTCODE_MASK_SWAP): | |
1248 | new = data | (old & ~arg); | |
1249 | break; | |
1250 | case (EXTCODE_COMPARE_SWAP): | |
1251 | if (old == arg) { | |
1252 | new = data; | |
1253 | } else { | |
1254 | new = old; | |
1255 | } | |
1256 | break; | |
1257 | case (EXTCODE_FETCH_ADD): | |
1258 | new = | |
1259 | cpu_to_be32(be32_to_cpu(data) + | |
1260 | be32_to_cpu(old)); | |
1261 | break; | |
1262 | case (EXTCODE_LITTLE_ADD): | |
1263 | new = | |
1264 | cpu_to_le32(le32_to_cpu(data) + | |
1265 | le32_to_cpu(old)); | |
1266 | break; | |
1267 | case (EXTCODE_BOUNDED_ADD): | |
1268 | if (old != arg) { | |
1269 | new = | |
1270 | cpu_to_be32(be32_to_cpu | |
1271 | (data) + | |
1272 | be32_to_cpu | |
1273 | (old)); | |
1274 | } else { | |
1275 | new = old; | |
1276 | } | |
1277 | break; | |
1278 | case (EXTCODE_WRAP_ADD): | |
1279 | if (old != arg) { | |
1280 | new = | |
1281 | cpu_to_be32(be32_to_cpu | |
1282 | (data) + | |
1283 | be32_to_cpu | |
1284 | (old)); | |
1285 | } else { | |
1286 | new = data; | |
1287 | } | |
1288 | break; | |
1289 | default: | |
1290 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1291 | printk(KERN_ERR | |
1292 | "raw1394: arm_lock FAILED " | |
1293 | "ext_tcode not allowed -> rcode_type_error\n"); | |
1294 | break; | |
1295 | } /*switch */ | |
1296 | if (rcode == -1) { | |
1297 | DBGMSG("arm_lock -> (rcode_complete)"); | |
1298 | rcode = RCODE_COMPLETE; | |
1299 | memcpy(store, &old, sizeof(*store)); | |
1300 | memcpy((arm_addr->addr_space_buffer) + | |
1301 | (addr - (arm_addr->start)), | |
1302 | &new, sizeof(*store)); | |
1303 | } | |
1304 | } | |
1305 | } else { | |
1306 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1307 | DBGMSG("arm_lock -> rcode_type_error (access denied)"); | |
1308 | } | |
1309 | } | |
1310 | if (arm_addr->notification_options & ARM_LOCK) { | |
1311 | byte_t *buf1, *buf2; | |
1312 | DBGMSG("arm_lock -> entering notification-section"); | |
1313 | req = __alloc_pending_request(SLAB_ATOMIC); | |
1314 | if (!req) { | |
1315 | DBGMSG("arm_lock -> rcode_conflict_error"); | |
4a9949d7 | 1316 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1317 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1318 | The request may be retried */ | |
1319 | } | |
1320 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ | |
1321 | req->data = kmalloc(size, SLAB_ATOMIC); | |
1322 | if (!(req->data)) { | |
1323 | free_pending_request(req); | |
1324 | DBGMSG("arm_lock -> rcode_conflict_error"); | |
4a9949d7 | 1325 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1326 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1327 | The request may be retried */ | |
1328 | } | |
1329 | req->free_data = 1; | |
1330 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1331 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1332 | (sizeof | |
1333 | (struct | |
1334 | arm_request_response))); | |
1335 | arm_resp = | |
1336 | (struct arm_response *)((byte_t *) (arm_req) + | |
1337 | (sizeof(struct arm_request))); | |
1338 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); | |
1339 | buf2 = buf1 + 2 * sizeof(*store); | |
1340 | if ((ext_tcode == EXTCODE_FETCH_ADD) || | |
1341 | (ext_tcode == EXTCODE_LITTLE_ADD)) { | |
1342 | arm_req->buffer_length = sizeof(*store); | |
1343 | memcpy(buf1, &data, sizeof(*store)); | |
1344 | ||
1345 | } else { | |
1346 | arm_req->buffer_length = 2 * sizeof(*store); | |
1347 | memcpy(buf1, &arg, sizeof(*store)); | |
1348 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); | |
1349 | } | |
1350 | if (rcode == RCODE_COMPLETE) { | |
1351 | arm_resp->buffer_length = sizeof(*store); | |
1352 | memcpy(buf2, &old, sizeof(*store)); | |
1353 | } else { | |
1354 | arm_resp->buffer_length = 0; | |
1355 | } | |
1356 | req->file_info = fi; | |
1357 | req->req.type = RAW1394_REQ_ARM; | |
1358 | req->req.generation = get_hpsb_generation(host); | |
1359 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | | |
1360 | (ARM_LOCK & 0xFF)); | |
1361 | req->req.tag = arm_addr->arm_tag; | |
1362 | req->req.recvb = arm_addr->recvb; | |
1363 | req->req.length = size; | |
1364 | arm_req->generation = req->req.generation; | |
1365 | arm_req->extended_transaction_code = ext_tcode; | |
1366 | arm_req->destination_offset = addr; | |
1367 | arm_req->source_nodeid = nodeid; | |
1368 | arm_req->destination_nodeid = host->node_id; | |
1369 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1370 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1371 | arm_resp->response_code = rcode; | |
1372 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1373 | sizeof(struct | |
1374 | arm_request_response)); | |
1375 | arm_req_resp->response = | |
1376 | int2ptr((arm_addr->recvb) + | |
1377 | sizeof(struct arm_request_response) + | |
1378 | sizeof(struct arm_request)); | |
1379 | arm_req->buffer = | |
1380 | int2ptr((arm_addr->recvb) + | |
1381 | sizeof(struct arm_request_response) + | |
1382 | sizeof(struct arm_request) + | |
1383 | sizeof(struct arm_response)); | |
1384 | arm_resp->buffer = | |
1385 | int2ptr((arm_addr->recvb) + | |
1386 | sizeof(struct arm_request_response) + | |
1387 | sizeof(struct arm_request) + | |
1388 | sizeof(struct arm_response) + 2 * sizeof(*store)); | |
1389 | queue_complete_req(req); | |
1390 | } | |
4a9949d7 | 1391 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1392 | return (rcode); |
1393 | } | |
1394 | ||
1395 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, | |
1396 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, | |
1397 | u16 flags) | |
1398 | { | |
4a9949d7 | 1399 | unsigned long irqflags; |
1da177e4 LT |
1400 | struct pending_request *req; |
1401 | struct host_info *hi; | |
1402 | struct file_info *fi = NULL; | |
1403 | struct list_head *entry; | |
1404 | struct arm_addr *arm_addr = NULL; | |
1405 | struct arm_request *arm_req = NULL; | |
1406 | struct arm_response *arm_resp = NULL; | |
1407 | int found = 0, size = 0, rcode = -1; | |
1408 | octlet_t old, new; | |
1409 | struct arm_request_response *arm_req_resp = NULL; | |
1410 | ||
1411 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || | |
1412 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { | |
1413 | DBGMSG("arm_lock64 called by node: %X " | |
1414 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ", | |
1415 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1416 | (u32) (addr & 0xFFFFFFFF), | |
1417 | ext_tcode & 0xFF, | |
1418 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), | |
1419 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF)); | |
1420 | } else { | |
1421 | DBGMSG("arm_lock64 called by node: %X " | |
1422 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: " | |
1423 | "%8.8X %8.8X ", | |
1424 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1425 | (u32) (addr & 0xFFFFFFFF), | |
1426 | ext_tcode & 0xFF, | |
1427 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), | |
1428 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF), | |
1429 | (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF), | |
1430 | (u32) (be64_to_cpu(arg) & 0xFFFFFFFF)); | |
1431 | } | |
4a9949d7 | 1432 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1433 | hi = find_host_info(host); /* search addressentry in file_info's for host */ |
1434 | if (hi != NULL) { | |
1435 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1436 | entry = fi->addr_list.next; | |
1437 | while (entry != &(fi->addr_list)) { | |
1438 | arm_addr = | |
1439 | list_entry(entry, struct arm_addr, | |
1440 | addr_list); | |
1441 | if (((arm_addr->start) <= (addr)) | |
1442 | && ((arm_addr->end) >= | |
1443 | (addr + sizeof(*store)))) { | |
1444 | found = 1; | |
1445 | break; | |
1446 | } | |
1447 | entry = entry->next; | |
1448 | } | |
1449 | if (found) { | |
1450 | break; | |
1451 | } | |
1452 | } | |
1453 | } | |
1454 | rcode = -1; | |
1455 | if (!found) { | |
1456 | printk(KERN_ERR | |
1457 | "raw1394: arm_lock64 FAILED addr_entry not found" | |
1458 | " -> rcode_address_error\n"); | |
4a9949d7 | 1459 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1460 | return (RCODE_ADDRESS_ERROR); |
1461 | } else { | |
1462 | DBGMSG("arm_lock64 addr_entry FOUND"); | |
1463 | } | |
1464 | if (rcode == -1) { | |
1465 | if (arm_addr->access_rights & ARM_LOCK) { | |
1466 | if (!(arm_addr->client_transactions & ARM_LOCK)) { | |
1467 | memcpy(&old, | |
1468 | (arm_addr->addr_space_buffer) + (addr - | |
1469 | (arm_addr-> | |
1470 | start)), | |
1471 | sizeof(old)); | |
1472 | switch (ext_tcode) { | |
1473 | case (EXTCODE_MASK_SWAP): | |
1474 | new = data | (old & ~arg); | |
1475 | break; | |
1476 | case (EXTCODE_COMPARE_SWAP): | |
1477 | if (old == arg) { | |
1478 | new = data; | |
1479 | } else { | |
1480 | new = old; | |
1481 | } | |
1482 | break; | |
1483 | case (EXTCODE_FETCH_ADD): | |
1484 | new = | |
1485 | cpu_to_be64(be64_to_cpu(data) + | |
1486 | be64_to_cpu(old)); | |
1487 | break; | |
1488 | case (EXTCODE_LITTLE_ADD): | |
1489 | new = | |
1490 | cpu_to_le64(le64_to_cpu(data) + | |
1491 | le64_to_cpu(old)); | |
1492 | break; | |
1493 | case (EXTCODE_BOUNDED_ADD): | |
1494 | if (old != arg) { | |
1495 | new = | |
1496 | cpu_to_be64(be64_to_cpu | |
1497 | (data) + | |
1498 | be64_to_cpu | |
1499 | (old)); | |
1500 | } else { | |
1501 | new = old; | |
1502 | } | |
1503 | break; | |
1504 | case (EXTCODE_WRAP_ADD): | |
1505 | if (old != arg) { | |
1506 | new = | |
1507 | cpu_to_be64(be64_to_cpu | |
1508 | (data) + | |
1509 | be64_to_cpu | |
1510 | (old)); | |
1511 | } else { | |
1512 | new = data; | |
1513 | } | |
1514 | break; | |
1515 | default: | |
1516 | printk(KERN_ERR | |
1517 | "raw1394: arm_lock64 FAILED " | |
1518 | "ext_tcode not allowed -> rcode_type_error\n"); | |
1519 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1520 | break; | |
1521 | } /*switch */ | |
1522 | if (rcode == -1) { | |
1523 | DBGMSG | |
1524 | ("arm_lock64 -> (rcode_complete)"); | |
1525 | rcode = RCODE_COMPLETE; | |
1526 | memcpy(store, &old, sizeof(*store)); | |
1527 | memcpy((arm_addr->addr_space_buffer) + | |
1528 | (addr - (arm_addr->start)), | |
1529 | &new, sizeof(*store)); | |
1530 | } | |
1531 | } | |
1532 | } else { | |
1533 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1534 | DBGMSG | |
1535 | ("arm_lock64 -> rcode_type_error (access denied)"); | |
1536 | } | |
1537 | } | |
1538 | if (arm_addr->notification_options & ARM_LOCK) { | |
1539 | byte_t *buf1, *buf2; | |
1540 | DBGMSG("arm_lock64 -> entering notification-section"); | |
1541 | req = __alloc_pending_request(SLAB_ATOMIC); | |
1542 | if (!req) { | |
4a9949d7 | 1543 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1544 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
1545 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. | |
1546 | The request may be retried */ | |
1547 | } | |
1548 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ | |
1549 | req->data = kmalloc(size, SLAB_ATOMIC); | |
1550 | if (!(req->data)) { | |
1551 | free_pending_request(req); | |
4a9949d7 | 1552 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1553 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
1554 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. | |
1555 | The request may be retried */ | |
1556 | } | |
1557 | req->free_data = 1; | |
1558 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1559 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1560 | (sizeof | |
1561 | (struct | |
1562 | arm_request_response))); | |
1563 | arm_resp = | |
1564 | (struct arm_response *)((byte_t *) (arm_req) + | |
1565 | (sizeof(struct arm_request))); | |
1566 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); | |
1567 | buf2 = buf1 + 2 * sizeof(*store); | |
1568 | if ((ext_tcode == EXTCODE_FETCH_ADD) || | |
1569 | (ext_tcode == EXTCODE_LITTLE_ADD)) { | |
1570 | arm_req->buffer_length = sizeof(*store); | |
1571 | memcpy(buf1, &data, sizeof(*store)); | |
1572 | ||
1573 | } else { | |
1574 | arm_req->buffer_length = 2 * sizeof(*store); | |
1575 | memcpy(buf1, &arg, sizeof(*store)); | |
1576 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); | |
1577 | } | |
1578 | if (rcode == RCODE_COMPLETE) { | |
1579 | arm_resp->buffer_length = sizeof(*store); | |
1580 | memcpy(buf2, &old, sizeof(*store)); | |
1581 | } else { | |
1582 | arm_resp->buffer_length = 0; | |
1583 | } | |
1584 | req->file_info = fi; | |
1585 | req->req.type = RAW1394_REQ_ARM; | |
1586 | req->req.generation = get_hpsb_generation(host); | |
1587 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | | |
1588 | (ARM_LOCK & 0xFF)); | |
1589 | req->req.tag = arm_addr->arm_tag; | |
1590 | req->req.recvb = arm_addr->recvb; | |
1591 | req->req.length = size; | |
1592 | arm_req->generation = req->req.generation; | |
1593 | arm_req->extended_transaction_code = ext_tcode; | |
1594 | arm_req->destination_offset = addr; | |
1595 | arm_req->source_nodeid = nodeid; | |
1596 | arm_req->destination_nodeid = host->node_id; | |
1597 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1598 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1599 | arm_resp->response_code = rcode; | |
1600 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1601 | sizeof(struct | |
1602 | arm_request_response)); | |
1603 | arm_req_resp->response = | |
1604 | int2ptr((arm_addr->recvb) + | |
1605 | sizeof(struct arm_request_response) + | |
1606 | sizeof(struct arm_request)); | |
1607 | arm_req->buffer = | |
1608 | int2ptr((arm_addr->recvb) + | |
1609 | sizeof(struct arm_request_response) + | |
1610 | sizeof(struct arm_request) + | |
1611 | sizeof(struct arm_response)); | |
1612 | arm_resp->buffer = | |
1613 | int2ptr((arm_addr->recvb) + | |
1614 | sizeof(struct arm_request_response) + | |
1615 | sizeof(struct arm_request) + | |
1616 | sizeof(struct arm_response) + 2 * sizeof(*store)); | |
1617 | queue_complete_req(req); | |
1618 | } | |
4a9949d7 | 1619 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1620 | return (rcode); |
1621 | } | |
1622 | ||
1623 | static int arm_register(struct file_info *fi, struct pending_request *req) | |
1624 | { | |
1625 | int retval; | |
1626 | struct arm_addr *addr; | |
1627 | struct host_info *hi; | |
1628 | struct file_info *fi_hlp = NULL; | |
1629 | struct list_head *entry; | |
1630 | struct arm_addr *arm_addr = NULL; | |
1631 | int same_host, another_host; | |
1632 | unsigned long flags; | |
1633 | ||
1634 | DBGMSG("arm_register called " | |
1635 | "addr(Offset): %8.8x %8.8x length: %u " | |
1636 | "rights: %2.2X notify: %2.2X " | |
1637 | "max_blk_len: %4.4X", | |
1638 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1639 | (u32) (req->req.address & 0xFFFFFFFF), | |
1640 | req->req.length, ((req->req.misc >> 8) & 0xFF), | |
1641 | (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF)); | |
1642 | /* check addressrange */ | |
1643 | if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) || | |
1644 | (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) != | |
1645 | 0)) { | |
1646 | req->req.length = 0; | |
1647 | return (-EINVAL); | |
1648 | } | |
1649 | /* addr-list-entry for fileinfo */ | |
1650 | addr = (struct arm_addr *)kmalloc(sizeof(struct arm_addr), SLAB_KERNEL); | |
1651 | if (!addr) { | |
1652 | req->req.length = 0; | |
1653 | return (-ENOMEM); | |
1654 | } | |
1655 | /* allocation of addr_space_buffer */ | |
1656 | addr->addr_space_buffer = (u8 *) vmalloc(req->req.length); | |
1657 | if (!(addr->addr_space_buffer)) { | |
1658 | kfree(addr); | |
1659 | req->req.length = 0; | |
1660 | return (-ENOMEM); | |
1661 | } | |
1662 | /* initialization of addr_space_buffer */ | |
1663 | if ((req->req.sendb) == (unsigned long)NULL) { | |
1664 | /* init: set 0 */ | |
1665 | memset(addr->addr_space_buffer, 0, req->req.length); | |
1666 | } else { | |
1667 | /* init: user -> kernel */ | |
1668 | if (copy_from_user | |
1669 | (addr->addr_space_buffer, int2ptr(req->req.sendb), | |
1670 | req->req.length)) { | |
1671 | vfree(addr->addr_space_buffer); | |
1672 | kfree(addr); | |
1673 | return (-EFAULT); | |
1674 | } | |
1675 | } | |
1676 | INIT_LIST_HEAD(&addr->addr_list); | |
1677 | addr->arm_tag = req->req.tag; | |
1678 | addr->start = req->req.address; | |
1679 | addr->end = req->req.address + req->req.length; | |
1680 | addr->access_rights = (u8) (req->req.misc & 0x0F); | |
1681 | addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F); | |
1682 | addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F); | |
1683 | addr->access_rights |= addr->client_transactions; | |
1684 | addr->notification_options |= addr->client_transactions; | |
1685 | addr->recvb = req->req.recvb; | |
1686 | addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF); | |
1687 | spin_lock_irqsave(&host_info_lock, flags); | |
1688 | hi = find_host_info(fi->host); | |
1689 | same_host = 0; | |
1690 | another_host = 0; | |
1691 | /* same host with address-entry containing same addressrange ? */ | |
1692 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1693 | entry = fi_hlp->addr_list.next; | |
1694 | while (entry != &(fi_hlp->addr_list)) { | |
1695 | arm_addr = | |
1696 | list_entry(entry, struct arm_addr, addr_list); | |
1697 | if ((arm_addr->start == addr->start) | |
1698 | && (arm_addr->end == addr->end)) { | |
1699 | DBGMSG("same host ownes same " | |
1700 | "addressrange -> EALREADY"); | |
1701 | same_host = 1; | |
1702 | break; | |
1703 | } | |
1704 | entry = entry->next; | |
1705 | } | |
1706 | if (same_host) { | |
1707 | break; | |
1708 | } | |
1709 | } | |
1710 | if (same_host) { | |
1711 | /* addressrange occupied by same host */ | |
1712 | vfree(addr->addr_space_buffer); | |
1713 | kfree(addr); | |
1714 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1715 | return (-EALREADY); | |
1716 | } | |
1717 | /* another host with valid address-entry containing same addressrange */ | |
1718 | list_for_each_entry(hi, &host_info_list, list) { | |
1719 | if (hi->host != fi->host) { | |
1720 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1721 | entry = fi_hlp->addr_list.next; | |
1722 | while (entry != &(fi_hlp->addr_list)) { | |
1723 | arm_addr = | |
1724 | list_entry(entry, struct arm_addr, | |
1725 | addr_list); | |
1726 | if ((arm_addr->start == addr->start) | |
1727 | && (arm_addr->end == addr->end)) { | |
1728 | DBGMSG | |
1729 | ("another host ownes same " | |
1730 | "addressrange"); | |
1731 | another_host = 1; | |
1732 | break; | |
1733 | } | |
1734 | entry = entry->next; | |
1735 | } | |
1736 | if (another_host) { | |
1737 | break; | |
1738 | } | |
1739 | } | |
1740 | } | |
1741 | } | |
1742 | if (another_host) { | |
1743 | DBGMSG("another hosts entry is valid -> SUCCESS"); | |
1744 | if (copy_to_user(int2ptr(req->req.recvb), | |
1745 | &addr->start, sizeof(u64))) { | |
1746 | printk(KERN_ERR "raw1394: arm_register failed " | |
1747 | " address-range-entry is invalid -> EFAULT !!!\n"); | |
1748 | vfree(addr->addr_space_buffer); | |
1749 | kfree(addr); | |
1750 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1751 | return (-EFAULT); | |
1752 | } | |
1753 | free_pending_request(req); /* immediate success or fail */ | |
1754 | /* INSERT ENTRY */ | |
1755 | list_add_tail(&addr->addr_list, &fi->addr_list); | |
1756 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1757 | return sizeof(struct raw1394_request); | |
1758 | } | |
1759 | retval = | |
1760 | hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops, | |
1761 | req->req.address, | |
1762 | req->req.address + req->req.length); | |
1763 | if (retval) { | |
1764 | /* INSERT ENTRY */ | |
1765 | list_add_tail(&addr->addr_list, &fi->addr_list); | |
1766 | } else { | |
1767 | DBGMSG("arm_register failed errno: %d \n", retval); | |
1768 | vfree(addr->addr_space_buffer); | |
1769 | kfree(addr); | |
1770 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1771 | return (-EALREADY); | |
1772 | } | |
1773 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1774 | free_pending_request(req); /* immediate success or fail */ | |
1775 | return sizeof(struct raw1394_request); | |
1776 | } | |
1777 | ||
1778 | static int arm_unregister(struct file_info *fi, struct pending_request *req) | |
1779 | { | |
1780 | int found = 0; | |
1781 | int retval = 0; | |
1782 | struct list_head *entry; | |
1783 | struct arm_addr *addr = NULL; | |
1784 | struct host_info *hi; | |
1785 | struct file_info *fi_hlp = NULL; | |
1786 | struct arm_addr *arm_addr = NULL; | |
1787 | int another_host; | |
1788 | unsigned long flags; | |
1789 | ||
1790 | DBGMSG("arm_Unregister called addr(Offset): " | |
1791 | "%8.8x %8.8x", | |
1792 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1793 | (u32) (req->req.address & 0xFFFFFFFF)); | |
1794 | spin_lock_irqsave(&host_info_lock, flags); | |
1795 | /* get addr */ | |
1796 | entry = fi->addr_list.next; | |
1797 | while (entry != &(fi->addr_list)) { | |
1798 | addr = list_entry(entry, struct arm_addr, addr_list); | |
1799 | if (addr->start == req->req.address) { | |
1800 | found = 1; | |
1801 | break; | |
1802 | } | |
1803 | entry = entry->next; | |
1804 | } | |
1805 | if (!found) { | |
1806 | DBGMSG("arm_Unregister addr not found"); | |
1807 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1808 | return (-EINVAL); | |
1809 | } | |
1810 | DBGMSG("arm_Unregister addr found"); | |
1811 | another_host = 0; | |
1812 | /* another host with valid address-entry containing | |
1813 | same addressrange */ | |
1814 | list_for_each_entry(hi, &host_info_list, list) { | |
1815 | if (hi->host != fi->host) { | |
1816 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1817 | entry = fi_hlp->addr_list.next; | |
1818 | while (entry != &(fi_hlp->addr_list)) { | |
1819 | arm_addr = list_entry(entry, | |
1820 | struct arm_addr, | |
1821 | addr_list); | |
1822 | if (arm_addr->start == addr->start) { | |
1823 | DBGMSG("another host ownes " | |
1824 | "same addressrange"); | |
1825 | another_host = 1; | |
1826 | break; | |
1827 | } | |
1828 | entry = entry->next; | |
1829 | } | |
1830 | if (another_host) { | |
1831 | break; | |
1832 | } | |
1833 | } | |
1834 | } | |
1835 | } | |
1836 | if (another_host) { | |
1837 | DBGMSG("delete entry from list -> success"); | |
1838 | list_del(&addr->addr_list); | |
1839 | vfree(addr->addr_space_buffer); | |
1840 | kfree(addr); | |
1841 | free_pending_request(req); /* immediate success or fail */ | |
1842 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1843 | return sizeof(struct raw1394_request); | |
1844 | } | |
1845 | retval = | |
1846 | hpsb_unregister_addrspace(&raw1394_highlevel, fi->host, | |
1847 | addr->start); | |
1848 | if (!retval) { | |
1849 | printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n"); | |
1850 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1851 | return (-EINVAL); | |
1852 | } | |
1853 | DBGMSG("delete entry from list -> success"); | |
1854 | list_del(&addr->addr_list); | |
1855 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1856 | vfree(addr->addr_space_buffer); | |
1857 | kfree(addr); | |
1858 | free_pending_request(req); /* immediate success or fail */ | |
1859 | return sizeof(struct raw1394_request); | |
1860 | } | |
1861 | ||
1862 | /* Copy data from ARM buffer(s) to user buffer. */ | |
1863 | static int arm_get_buf(struct file_info *fi, struct pending_request *req) | |
1864 | { | |
1865 | struct arm_addr *arm_addr = NULL; | |
1866 | unsigned long flags; | |
1867 | unsigned long offset; | |
1868 | ||
1869 | struct list_head *entry; | |
1870 | ||
1871 | DBGMSG("arm_get_buf " | |
1872 | "addr(Offset): %04X %08X length: %u", | |
1873 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1874 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); | |
1875 | ||
1876 | spin_lock_irqsave(&host_info_lock, flags); | |
1877 | entry = fi->addr_list.next; | |
1878 | while (entry != &(fi->addr_list)) { | |
1879 | arm_addr = list_entry(entry, struct arm_addr, addr_list); | |
1880 | if ((arm_addr->start <= req->req.address) && | |
1881 | (arm_addr->end > req->req.address)) { | |
1882 | if (req->req.address + req->req.length <= arm_addr->end) { | |
1883 | offset = req->req.address - arm_addr->start; | |
1884 | ||
1885 | DBGMSG | |
1886 | ("arm_get_buf copy_to_user( %08X, %p, %u )", | |
1887 | (u32) req->req.recvb, | |
1888 | arm_addr->addr_space_buffer + offset, | |
1889 | (u32) req->req.length); | |
1890 | ||
1891 | if (copy_to_user | |
1892 | (int2ptr(req->req.recvb), | |
1893 | arm_addr->addr_space_buffer + offset, | |
1894 | req->req.length)) { | |
1895 | spin_unlock_irqrestore(&host_info_lock, | |
1896 | flags); | |
1897 | return (-EFAULT); | |
1898 | } | |
1899 | ||
1900 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1901 | /* We have to free the request, because we | |
1902 | * queue no response, and therefore nobody | |
1903 | * will free it. */ | |
1904 | free_pending_request(req); | |
1905 | return sizeof(struct raw1394_request); | |
1906 | } else { | |
1907 | DBGMSG("arm_get_buf request exceeded mapping"); | |
1908 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1909 | return (-EINVAL); | |
1910 | } | |
1911 | } | |
1912 | entry = entry->next; | |
1913 | } | |
1914 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1915 | return (-EINVAL); | |
1916 | } | |
1917 | ||
1918 | /* Copy data from user buffer to ARM buffer(s). */ | |
1919 | static int arm_set_buf(struct file_info *fi, struct pending_request *req) | |
1920 | { | |
1921 | struct arm_addr *arm_addr = NULL; | |
1922 | unsigned long flags; | |
1923 | unsigned long offset; | |
1924 | ||
1925 | struct list_head *entry; | |
1926 | ||
1927 | DBGMSG("arm_set_buf " | |
1928 | "addr(Offset): %04X %08X length: %u", | |
1929 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1930 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); | |
1931 | ||
1932 | spin_lock_irqsave(&host_info_lock, flags); | |
1933 | entry = fi->addr_list.next; | |
1934 | while (entry != &(fi->addr_list)) { | |
1935 | arm_addr = list_entry(entry, struct arm_addr, addr_list); | |
1936 | if ((arm_addr->start <= req->req.address) && | |
1937 | (arm_addr->end > req->req.address)) { | |
1938 | if (req->req.address + req->req.length <= arm_addr->end) { | |
1939 | offset = req->req.address - arm_addr->start; | |
1940 | ||
1941 | DBGMSG | |
1942 | ("arm_set_buf copy_from_user( %p, %08X, %u )", | |
1943 | arm_addr->addr_space_buffer + offset, | |
1944 | (u32) req->req.sendb, | |
1945 | (u32) req->req.length); | |
1946 | ||
1947 | if (copy_from_user | |
1948 | (arm_addr->addr_space_buffer + offset, | |
1949 | int2ptr(req->req.sendb), | |
1950 | req->req.length)) { | |
1951 | spin_unlock_irqrestore(&host_info_lock, | |
1952 | flags); | |
1953 | return (-EFAULT); | |
1954 | } | |
1955 | ||
1956 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1957 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
1958 | return sizeof(struct raw1394_request); | |
1959 | } else { | |
1960 | DBGMSG("arm_set_buf request exceeded mapping"); | |
1961 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1962 | return (-EINVAL); | |
1963 | } | |
1964 | } | |
1965 | entry = entry->next; | |
1966 | } | |
1967 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1968 | return (-EINVAL); | |
1969 | } | |
1970 | ||
1971 | static int reset_notification(struct file_info *fi, struct pending_request *req) | |
1972 | { | |
1973 | DBGMSG("reset_notification called - switch %s ", | |
1974 | (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON"); | |
1975 | if ((req->req.misc == RAW1394_NOTIFY_OFF) || | |
1976 | (req->req.misc == RAW1394_NOTIFY_ON)) { | |
1977 | fi->notification = (u8) req->req.misc; | |
1978 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
1979 | return sizeof(struct raw1394_request); | |
1980 | } | |
1981 | /* error EINVAL (22) invalid argument */ | |
1982 | return (-EINVAL); | |
1983 | } | |
1984 | ||
1985 | static int write_phypacket(struct file_info *fi, struct pending_request *req) | |
1986 | { | |
1987 | struct hpsb_packet *packet = NULL; | |
1988 | int retval = 0; | |
1989 | quadlet_t data; | |
4a9949d7 | 1990 | unsigned long flags; |
1da177e4 LT |
1991 | |
1992 | data = be32_to_cpu((u32) req->req.sendb); | |
1993 | DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data); | |
1994 | packet = hpsb_make_phypacket(fi->host, data); | |
1995 | if (!packet) | |
1996 | return -ENOMEM; | |
1997 | req->req.length = 0; | |
1998 | req->packet = packet; | |
1999 | hpsb_set_packet_complete_task(packet, | |
2000 | (void (*)(void *))queue_complete_cb, req); | |
4a9949d7 | 2001 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 2002 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 2003 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
2004 | packet->generation = req->req.generation; |
2005 | retval = hpsb_send_packet(packet); | |
2006 | DBGMSG("write_phypacket send_packet called => retval: %d ", retval); | |
2007 | if (retval < 0) { | |
2008 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
2009 | req->req.length = 0; | |
2010 | queue_complete_req(req); | |
2011 | } | |
2012 | return sizeof(struct raw1394_request); | |
2013 | } | |
2014 | ||
2015 | static int get_config_rom(struct file_info *fi, struct pending_request *req) | |
2016 | { | |
2017 | int ret = sizeof(struct raw1394_request); | |
2018 | quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL); | |
2019 | int status; | |
2020 | ||
2021 | if (!data) | |
2022 | return -ENOMEM; | |
2023 | ||
2024 | status = | |
2025 | csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET, | |
2026 | data, req->req.length); | |
2027 | if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length)) | |
2028 | ret = -EFAULT; | |
2029 | if (copy_to_user | |
2030 | (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len, | |
2031 | sizeof(fi->host->csr.rom->cache_head->len))) | |
2032 | ret = -EFAULT; | |
2033 | if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation, | |
2034 | sizeof(fi->host->csr.generation))) | |
2035 | ret = -EFAULT; | |
2036 | if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status))) | |
2037 | ret = -EFAULT; | |
2038 | kfree(data); | |
2039 | if (ret >= 0) { | |
2040 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2041 | } | |
2042 | return ret; | |
2043 | } | |
2044 | ||
2045 | static int update_config_rom(struct file_info *fi, struct pending_request *req) | |
2046 | { | |
2047 | int ret = sizeof(struct raw1394_request); | |
2048 | quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL); | |
2049 | if (!data) | |
2050 | return -ENOMEM; | |
2051 | if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) { | |
2052 | ret = -EFAULT; | |
2053 | } else { | |
2054 | int status = hpsb_update_config_rom(fi->host, | |
2055 | data, req->req.length, | |
2056 | (unsigned char)req->req. | |
2057 | misc); | |
2058 | if (copy_to_user | |
2059 | (int2ptr(req->req.recvb), &status, sizeof(status))) | |
2060 | ret = -ENOMEM; | |
2061 | } | |
2062 | kfree(data); | |
2063 | if (ret >= 0) { | |
2064 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2065 | fi->cfgrom_upd = 1; | |
2066 | } | |
2067 | return ret; | |
2068 | } | |
2069 | ||
2070 | static int modify_config_rom(struct file_info *fi, struct pending_request *req) | |
2071 | { | |
2072 | struct csr1212_keyval *kv; | |
2073 | struct csr1212_csr_rom_cache *cache; | |
2074 | struct csr1212_dentry *dentry; | |
2075 | u32 dr; | |
2076 | int ret = 0; | |
2077 | ||
2078 | if (req->req.misc == ~0) { | |
2079 | if (req->req.length == 0) | |
2080 | return -EINVAL; | |
2081 | ||
2082 | /* Find an unused slot */ | |
2083 | for (dr = 0; | |
2084 | dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr]; | |
2085 | dr++) ; | |
2086 | ||
2087 | if (dr == RAW1394_MAX_USER_CSR_DIRS) | |
2088 | return -ENOMEM; | |
2089 | ||
2090 | fi->csr1212_dirs[dr] = | |
2091 | csr1212_new_directory(CSR1212_KV_ID_VENDOR); | |
2092 | if (!fi->csr1212_dirs[dr]) | |
2093 | return -ENOMEM; | |
2094 | } else { | |
2095 | dr = req->req.misc; | |
2096 | if (!fi->csr1212_dirs[dr]) | |
2097 | return -EINVAL; | |
2098 | ||
2099 | /* Delete old stuff */ | |
2100 | for (dentry = | |
2101 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2102 | dentry; dentry = dentry->next) { | |
2103 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2104 | root_kv, | |
2105 | dentry->kv); | |
2106 | } | |
2107 | ||
2108 | if (req->req.length == 0) { | |
2109 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2110 | fi->csr1212_dirs[dr] = NULL; | |
2111 | ||
2112 | hpsb_update_config_rom_image(fi->host); | |
2113 | free_pending_request(req); | |
2114 | return sizeof(struct raw1394_request); | |
2115 | } | |
2116 | } | |
2117 | ||
2118 | cache = csr1212_rom_cache_malloc(0, req->req.length); | |
2119 | if (!cache) { | |
2120 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2121 | fi->csr1212_dirs[dr] = NULL; | |
2122 | return -ENOMEM; | |
2123 | } | |
2124 | ||
2125 | cache->filled_head = | |
2126 | kmalloc(sizeof(struct csr1212_cache_region), GFP_KERNEL); | |
2127 | if (!cache->filled_head) { | |
2128 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2129 | fi->csr1212_dirs[dr] = NULL; | |
2130 | CSR1212_FREE(cache); | |
2131 | return -ENOMEM; | |
2132 | } | |
2133 | cache->filled_tail = cache->filled_head; | |
2134 | ||
2135 | if (copy_from_user(cache->data, int2ptr(req->req.sendb), | |
2136 | req->req.length)) { | |
2137 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2138 | fi->csr1212_dirs[dr] = NULL; | |
2139 | CSR1212_FREE(cache); | |
2140 | ret = -EFAULT; | |
2141 | } else { | |
2142 | cache->len = req->req.length; | |
2143 | cache->filled_head->offset_start = 0; | |
2144 | cache->filled_head->offset_end = cache->size - 1; | |
2145 | ||
2146 | cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr]; | |
2147 | ||
2148 | ret = CSR1212_SUCCESS; | |
2149 | /* parse all the items */ | |
2150 | for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv; | |
2151 | kv = kv->next) { | |
2152 | ret = csr1212_parse_keyval(kv, cache); | |
2153 | } | |
2154 | ||
2155 | /* attach top level items to the root directory */ | |
2156 | for (dentry = | |
2157 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2158 | ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) { | |
2159 | ret = | |
2160 | csr1212_attach_keyval_to_directory(fi->host->csr. | |
2161 | rom->root_kv, | |
2162 | dentry->kv); | |
2163 | } | |
2164 | ||
2165 | if (ret == CSR1212_SUCCESS) { | |
2166 | ret = hpsb_update_config_rom_image(fi->host); | |
2167 | ||
2168 | if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb), | |
2169 | &dr, sizeof(dr))) { | |
2170 | ret = -ENOMEM; | |
2171 | } | |
2172 | } | |
2173 | } | |
2174 | kfree(cache->filled_head); | |
2175 | kfree(cache); | |
2176 | ||
2177 | if (ret >= 0) { | |
2178 | /* we have to free the request, because we queue no response, | |
2179 | * and therefore nobody will free it */ | |
2180 | free_pending_request(req); | |
2181 | return sizeof(struct raw1394_request); | |
2182 | } else { | |
2183 | for (dentry = | |
2184 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2185 | dentry; dentry = dentry->next) { | |
2186 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2187 | root_kv, | |
2188 | dentry->kv); | |
2189 | } | |
2190 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2191 | fi->csr1212_dirs[dr] = NULL; | |
2192 | return ret; | |
2193 | } | |
2194 | } | |
2195 | ||
2196 | static int state_connected(struct file_info *fi, struct pending_request *req) | |
2197 | { | |
2198 | int node = req->req.address >> 48; | |
2199 | ||
2200 | req->req.error = RAW1394_ERROR_NONE; | |
2201 | ||
2202 | switch (req->req.type) { | |
2203 | ||
2204 | case RAW1394_REQ_ECHO: | |
2205 | queue_complete_req(req); | |
2206 | return sizeof(struct raw1394_request); | |
2207 | ||
2208 | case RAW1394_REQ_ISO_SEND: | |
2209 | return handle_iso_send(fi, req, node); | |
2210 | ||
2211 | case RAW1394_REQ_ARM_REGISTER: | |
2212 | return arm_register(fi, req); | |
2213 | ||
2214 | case RAW1394_REQ_ARM_UNREGISTER: | |
2215 | return arm_unregister(fi, req); | |
2216 | ||
2217 | case RAW1394_REQ_ARM_SET_BUF: | |
2218 | return arm_set_buf(fi, req); | |
2219 | ||
2220 | case RAW1394_REQ_ARM_GET_BUF: | |
2221 | return arm_get_buf(fi, req); | |
2222 | ||
2223 | case RAW1394_REQ_RESET_NOTIFY: | |
2224 | return reset_notification(fi, req); | |
2225 | ||
2226 | case RAW1394_REQ_ISO_LISTEN: | |
2227 | handle_iso_listen(fi, req); | |
2228 | return sizeof(struct raw1394_request); | |
2229 | ||
2230 | case RAW1394_REQ_FCP_LISTEN: | |
2231 | handle_fcp_listen(fi, req); | |
2232 | return sizeof(struct raw1394_request); | |
2233 | ||
2234 | case RAW1394_REQ_RESET_BUS: | |
2235 | if (req->req.misc == RAW1394_LONG_RESET) { | |
2236 | DBGMSG("busreset called (type: LONG)"); | |
2237 | hpsb_reset_bus(fi->host, LONG_RESET); | |
2238 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2239 | return sizeof(struct raw1394_request); | |
2240 | } | |
2241 | if (req->req.misc == RAW1394_SHORT_RESET) { | |
2242 | DBGMSG("busreset called (type: SHORT)"); | |
2243 | hpsb_reset_bus(fi->host, SHORT_RESET); | |
2244 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2245 | return sizeof(struct raw1394_request); | |
2246 | } | |
2247 | /* error EINVAL (22) invalid argument */ | |
2248 | return (-EINVAL); | |
2249 | case RAW1394_REQ_GET_ROM: | |
2250 | return get_config_rom(fi, req); | |
2251 | ||
2252 | case RAW1394_REQ_UPDATE_ROM: | |
2253 | return update_config_rom(fi, req); | |
2254 | ||
2255 | case RAW1394_REQ_MODIFY_ROM: | |
2256 | return modify_config_rom(fi, req); | |
2257 | } | |
2258 | ||
2259 | if (req->req.generation != get_hpsb_generation(fi->host)) { | |
2260 | req->req.error = RAW1394_ERROR_GENERATION; | |
2261 | req->req.generation = get_hpsb_generation(fi->host); | |
2262 | req->req.length = 0; | |
2263 | queue_complete_req(req); | |
2264 | return sizeof(struct raw1394_request); | |
2265 | } | |
2266 | ||
2267 | switch (req->req.type) { | |
2268 | case RAW1394_REQ_PHYPACKET: | |
2269 | return write_phypacket(fi, req); | |
2270 | case RAW1394_REQ_ASYNC_SEND: | |
2271 | return handle_async_send(fi, req); | |
2272 | } | |
2273 | ||
2274 | if (req->req.length == 0) { | |
2275 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
2276 | queue_complete_req(req); | |
2277 | return sizeof(struct raw1394_request); | |
2278 | } | |
2279 | ||
2280 | return handle_async_request(fi, req, node); | |
2281 | } | |
2282 | ||
2283 | static ssize_t raw1394_write(struct file *file, const char __user * buffer, | |
2284 | size_t count, loff_t * offset_is_ignored) | |
2285 | { | |
2286 | struct file_info *fi = (struct file_info *)file->private_data; | |
2287 | struct pending_request *req; | |
2288 | ssize_t retval = 0; | |
2289 | ||
2290 | if (count != sizeof(struct raw1394_request)) { | |
2291 | return -EINVAL; | |
2292 | } | |
2293 | ||
2294 | req = alloc_pending_request(); | |
2295 | if (req == NULL) { | |
2296 | return -ENOMEM; | |
2297 | } | |
2298 | req->file_info = fi; | |
2299 | ||
2300 | if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) { | |
2301 | free_pending_request(req); | |
2302 | return -EFAULT; | |
2303 | } | |
2304 | ||
2305 | switch (fi->state) { | |
2306 | case opened: | |
2307 | retval = state_opened(fi, req); | |
2308 | break; | |
2309 | ||
2310 | case initialized: | |
2311 | retval = state_initialized(fi, req); | |
2312 | break; | |
2313 | ||
2314 | case connected: | |
2315 | retval = state_connected(fi, req); | |
2316 | break; | |
2317 | } | |
2318 | ||
2319 | if (retval < 0) { | |
2320 | free_pending_request(req); | |
2321 | } | |
2322 | ||
2323 | return retval; | |
2324 | } | |
2325 | ||
2326 | /* rawiso operations */ | |
2327 | ||
2328 | /* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the | |
2329 | * completion queue (reqlists_lock must be taken) */ | |
2330 | static inline int __rawiso_event_in_queue(struct file_info *fi) | |
2331 | { | |
2332 | struct pending_request *req; | |
2333 | ||
2334 | list_for_each_entry(req, &fi->req_complete, list) | |
2335 | if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY) | |
2336 | return 1; | |
2337 | ||
2338 | return 0; | |
2339 | } | |
2340 | ||
2341 | /* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */ | |
2342 | static void queue_rawiso_event(struct file_info *fi) | |
2343 | { | |
2344 | unsigned long flags; | |
2345 | ||
2346 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
2347 | ||
2348 | /* only one ISO activity event may be in the queue */ | |
2349 | if (!__rawiso_event_in_queue(fi)) { | |
2350 | struct pending_request *req = | |
2351 | __alloc_pending_request(SLAB_ATOMIC); | |
2352 | ||
2353 | if (req) { | |
2354 | req->file_info = fi; | |
2355 | req->req.type = RAW1394_REQ_RAWISO_ACTIVITY; | |
2356 | req->req.generation = get_hpsb_generation(fi->host); | |
2357 | __queue_complete_req(req); | |
2358 | } else { | |
2359 | /* on allocation failure, signal an overflow */ | |
2360 | if (fi->iso_handle) { | |
2361 | atomic_inc(&fi->iso_handle->overflows); | |
2362 | } | |
2363 | } | |
2364 | } | |
2365 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
2366 | } | |
2367 | ||
2368 | static void rawiso_activity_cb(struct hpsb_iso *iso) | |
2369 | { | |
2370 | unsigned long flags; | |
2371 | struct host_info *hi; | |
2372 | struct file_info *fi; | |
2373 | ||
2374 | spin_lock_irqsave(&host_info_lock, flags); | |
2375 | hi = find_host_info(iso->host); | |
2376 | ||
2377 | if (hi != NULL) { | |
2378 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
2379 | if (fi->iso_handle == iso) | |
2380 | queue_rawiso_event(fi); | |
2381 | } | |
2382 | } | |
2383 | ||
2384 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2385 | } | |
2386 | ||
2387 | /* helper function - gather all the kernel iso status bits for returning to user-space */ | |
2388 | static void raw1394_iso_fill_status(struct hpsb_iso *iso, | |
2389 | struct raw1394_iso_status *stat) | |
2390 | { | |
2391 | stat->config.data_buf_size = iso->buf_size; | |
2392 | stat->config.buf_packets = iso->buf_packets; | |
2393 | stat->config.channel = iso->channel; | |
2394 | stat->config.speed = iso->speed; | |
2395 | stat->config.irq_interval = iso->irq_interval; | |
2396 | stat->n_packets = hpsb_iso_n_ready(iso); | |
2397 | stat->overflows = atomic_read(&iso->overflows); | |
2398 | stat->xmit_cycle = iso->xmit_cycle; | |
2399 | } | |
2400 | ||
2401 | static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr) | |
2402 | { | |
2403 | struct raw1394_iso_status stat; | |
2404 | ||
2405 | if (!fi->host) | |
2406 | return -EINVAL; | |
2407 | ||
2408 | if (copy_from_user(&stat, uaddr, sizeof(stat))) | |
2409 | return -EFAULT; | |
2410 | ||
2411 | fi->iso_handle = hpsb_iso_xmit_init(fi->host, | |
2412 | stat.config.data_buf_size, | |
2413 | stat.config.buf_packets, | |
2414 | stat.config.channel, | |
2415 | stat.config.speed, | |
2416 | stat.config.irq_interval, | |
2417 | rawiso_activity_cb); | |
2418 | if (!fi->iso_handle) | |
2419 | return -ENOMEM; | |
2420 | ||
2421 | fi->iso_state = RAW1394_ISO_XMIT; | |
2422 | ||
2423 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2424 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2425 | return -EFAULT; | |
2426 | ||
2427 | /* queue an event to get things started */ | |
2428 | rawiso_activity_cb(fi->iso_handle); | |
2429 | ||
2430 | return 0; | |
2431 | } | |
2432 | ||
2433 | static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr) | |
2434 | { | |
2435 | struct raw1394_iso_status stat; | |
2436 | ||
2437 | if (!fi->host) | |
2438 | return -EINVAL; | |
2439 | ||
2440 | if (copy_from_user(&stat, uaddr, sizeof(stat))) | |
2441 | return -EFAULT; | |
2442 | ||
2443 | fi->iso_handle = hpsb_iso_recv_init(fi->host, | |
2444 | stat.config.data_buf_size, | |
2445 | stat.config.buf_packets, | |
2446 | stat.config.channel, | |
2447 | stat.config.dma_mode, | |
2448 | stat.config.irq_interval, | |
2449 | rawiso_activity_cb); | |
2450 | if (!fi->iso_handle) | |
2451 | return -ENOMEM; | |
2452 | ||
2453 | fi->iso_state = RAW1394_ISO_RECV; | |
2454 | ||
2455 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2456 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2457 | return -EFAULT; | |
2458 | return 0; | |
2459 | } | |
2460 | ||
2461 | static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr) | |
2462 | { | |
2463 | struct raw1394_iso_status stat; | |
2464 | struct hpsb_iso *iso = fi->iso_handle; | |
2465 | ||
2466 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2467 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2468 | return -EFAULT; | |
2469 | ||
2470 | /* reset overflow counter */ | |
2471 | atomic_set(&iso->overflows, 0); | |
2472 | ||
2473 | return 0; | |
2474 | } | |
2475 | ||
2476 | /* copy N packet_infos out of the ringbuffer into user-supplied array */ | |
2477 | static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr) | |
2478 | { | |
2479 | struct raw1394_iso_packets upackets; | |
2480 | unsigned int packet = fi->iso_handle->first_packet; | |
2481 | int i; | |
2482 | ||
2483 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) | |
2484 | return -EFAULT; | |
2485 | ||
2486 | if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle)) | |
2487 | return -EINVAL; | |
2488 | ||
2489 | /* ensure user-supplied buffer is accessible and big enough */ | |
2490 | if (!access_ok(VERIFY_WRITE, upackets.infos, | |
2491 | upackets.n_packets * | |
2492 | sizeof(struct raw1394_iso_packet_info))) | |
2493 | return -EFAULT; | |
2494 | ||
2495 | /* copy the packet_infos out */ | |
2496 | for (i = 0; i < upackets.n_packets; i++) { | |
2497 | if (__copy_to_user(&upackets.infos[i], | |
2498 | &fi->iso_handle->infos[packet], | |
2499 | sizeof(struct raw1394_iso_packet_info))) | |
2500 | return -EFAULT; | |
2501 | ||
2502 | packet = (packet + 1) % fi->iso_handle->buf_packets; | |
2503 | } | |
2504 | ||
2505 | return 0; | |
2506 | } | |
2507 | ||
2508 | /* copy N packet_infos from user to ringbuffer, and queue them for transmission */ | |
2509 | static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr) | |
2510 | { | |
2511 | struct raw1394_iso_packets upackets; | |
2512 | int i, rv; | |
2513 | ||
2514 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) | |
2515 | return -EFAULT; | |
2516 | ||
1934b8b6 | 2517 | if (upackets.n_packets >= fi->iso_handle->buf_packets) |
1da177e4 LT |
2518 | return -EINVAL; |
2519 | ||
1934b8b6 BC |
2520 | if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle)) |
2521 | return -EAGAIN; | |
2522 | ||
1da177e4 LT |
2523 | /* ensure user-supplied buffer is accessible and big enough */ |
2524 | if (!access_ok(VERIFY_READ, upackets.infos, | |
2525 | upackets.n_packets * | |
2526 | sizeof(struct raw1394_iso_packet_info))) | |
2527 | return -EFAULT; | |
2528 | ||
2529 | /* copy the infos structs in and queue the packets */ | |
2530 | for (i = 0; i < upackets.n_packets; i++) { | |
2531 | struct raw1394_iso_packet_info info; | |
2532 | ||
2533 | if (__copy_from_user(&info, &upackets.infos[i], | |
2534 | sizeof(struct raw1394_iso_packet_info))) | |
2535 | return -EFAULT; | |
2536 | ||
2537 | rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset, | |
2538 | info.len, info.tag, info.sy); | |
2539 | if (rv) | |
2540 | return rv; | |
2541 | } | |
2542 | ||
2543 | return 0; | |
2544 | } | |
2545 | ||
2546 | static void raw1394_iso_shutdown(struct file_info *fi) | |
2547 | { | |
2548 | if (fi->iso_handle) | |
2549 | hpsb_iso_shutdown(fi->iso_handle); | |
2550 | ||
2551 | fi->iso_handle = NULL; | |
2552 | fi->iso_state = RAW1394_ISO_INACTIVE; | |
2553 | } | |
2554 | ||
2555 | /* mmap the rawiso xmit/recv buffer */ | |
2556 | static int raw1394_mmap(struct file *file, struct vm_area_struct *vma) | |
2557 | { | |
2558 | struct file_info *fi = file->private_data; | |
2559 | ||
2560 | if (fi->iso_state == RAW1394_ISO_INACTIVE) | |
2561 | return -EINVAL; | |
2562 | ||
2563 | return dma_region_mmap(&fi->iso_handle->data_buf, file, vma); | |
2564 | } | |
2565 | ||
2566 | /* ioctl is only used for rawiso operations */ | |
2567 | static int raw1394_ioctl(struct inode *inode, struct file *file, | |
2568 | unsigned int cmd, unsigned long arg) | |
2569 | { | |
2570 | struct file_info *fi = file->private_data; | |
2571 | void __user *argp = (void __user *)arg; | |
2572 | ||
2573 | switch (fi->iso_state) { | |
2574 | case RAW1394_ISO_INACTIVE: | |
2575 | switch (cmd) { | |
2576 | case RAW1394_IOC_ISO_XMIT_INIT: | |
2577 | return raw1394_iso_xmit_init(fi, argp); | |
2578 | case RAW1394_IOC_ISO_RECV_INIT: | |
2579 | return raw1394_iso_recv_init(fi, argp); | |
2580 | default: | |
2581 | break; | |
2582 | } | |
2583 | break; | |
2584 | case RAW1394_ISO_RECV: | |
2585 | switch (cmd) { | |
2586 | case RAW1394_IOC_ISO_RECV_START:{ | |
2587 | /* copy args from user-space */ | |
2588 | int args[3]; | |
2589 | if (copy_from_user | |
2590 | (&args[0], argp, sizeof(args))) | |
2591 | return -EFAULT; | |
2592 | return hpsb_iso_recv_start(fi->iso_handle, | |
2593 | args[0], args[1], | |
2594 | args[2]); | |
2595 | } | |
2596 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2597 | hpsb_iso_stop(fi->iso_handle); | |
2598 | return 0; | |
2599 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: | |
2600 | return hpsb_iso_recv_listen_channel(fi->iso_handle, | |
2601 | arg); | |
2602 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: | |
2603 | return hpsb_iso_recv_unlisten_channel(fi->iso_handle, | |
2604 | arg); | |
2605 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{ | |
2606 | /* copy the u64 from user-space */ | |
2607 | u64 mask; | |
2608 | if (copy_from_user(&mask, argp, sizeof(mask))) | |
2609 | return -EFAULT; | |
2610 | return hpsb_iso_recv_set_channel_mask(fi-> | |
2611 | iso_handle, | |
2612 | mask); | |
2613 | } | |
2614 | case RAW1394_IOC_ISO_GET_STATUS: | |
2615 | return raw1394_iso_get_status(fi, argp); | |
2616 | case RAW1394_IOC_ISO_RECV_PACKETS: | |
2617 | return raw1394_iso_recv_packets(fi, argp); | |
2618 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: | |
2619 | return hpsb_iso_recv_release_packets(fi->iso_handle, | |
2620 | arg); | |
2621 | case RAW1394_IOC_ISO_RECV_FLUSH: | |
2622 | return hpsb_iso_recv_flush(fi->iso_handle); | |
2623 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2624 | raw1394_iso_shutdown(fi); | |
2625 | return 0; | |
2626 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
2627 | queue_rawiso_event(fi); | |
2628 | return 0; | |
2629 | } | |
2630 | break; | |
2631 | case RAW1394_ISO_XMIT: | |
2632 | switch (cmd) { | |
2633 | case RAW1394_IOC_ISO_XMIT_START:{ | |
2634 | /* copy two ints from user-space */ | |
2635 | int args[2]; | |
2636 | if (copy_from_user | |
2637 | (&args[0], argp, sizeof(args))) | |
2638 | return -EFAULT; | |
2639 | return hpsb_iso_xmit_start(fi->iso_handle, | |
2640 | args[0], args[1]); | |
2641 | } | |
2642 | case RAW1394_IOC_ISO_XMIT_SYNC: | |
2643 | return hpsb_iso_xmit_sync(fi->iso_handle); | |
2644 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2645 | hpsb_iso_stop(fi->iso_handle); | |
2646 | return 0; | |
2647 | case RAW1394_IOC_ISO_GET_STATUS: | |
2648 | return raw1394_iso_get_status(fi, argp); | |
2649 | case RAW1394_IOC_ISO_XMIT_PACKETS: | |
2650 | return raw1394_iso_send_packets(fi, argp); | |
2651 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2652 | raw1394_iso_shutdown(fi); | |
2653 | return 0; | |
2654 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
2655 | queue_rawiso_event(fi); | |
2656 | return 0; | |
2657 | } | |
2658 | break; | |
2659 | default: | |
2660 | break; | |
2661 | } | |
2662 | ||
2663 | return -EINVAL; | |
2664 | } | |
2665 | ||
2666 | static unsigned int raw1394_poll(struct file *file, poll_table * pt) | |
2667 | { | |
2668 | struct file_info *fi = file->private_data; | |
2669 | unsigned int mask = POLLOUT | POLLWRNORM; | |
4a9949d7 | 2670 | unsigned long flags; |
1da177e4 LT |
2671 | |
2672 | poll_wait(file, &fi->poll_wait_complete, pt); | |
2673 | ||
4a9949d7 | 2674 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 LT |
2675 | if (!list_empty(&fi->req_complete)) { |
2676 | mask |= POLLIN | POLLRDNORM; | |
2677 | } | |
4a9949d7 | 2678 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
2679 | |
2680 | return mask; | |
2681 | } | |
2682 | ||
2683 | static int raw1394_open(struct inode *inode, struct file *file) | |
2684 | { | |
2685 | struct file_info *fi; | |
2686 | ||
2687 | fi = kmalloc(sizeof(struct file_info), SLAB_KERNEL); | |
2688 | if (fi == NULL) | |
2689 | return -ENOMEM; | |
2690 | ||
2691 | memset(fi, 0, sizeof(struct file_info)); | |
2692 | fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */ | |
2693 | ||
2694 | INIT_LIST_HEAD(&fi->list); | |
2695 | fi->state = opened; | |
2696 | INIT_LIST_HEAD(&fi->req_pending); | |
2697 | INIT_LIST_HEAD(&fi->req_complete); | |
2698 | sema_init(&fi->complete_sem, 0); | |
2699 | spin_lock_init(&fi->reqlists_lock); | |
2700 | init_waitqueue_head(&fi->poll_wait_complete); | |
2701 | INIT_LIST_HEAD(&fi->addr_list); | |
2702 | ||
2703 | file->private_data = fi; | |
2704 | ||
2705 | return 0; | |
2706 | } | |
2707 | ||
2708 | static int raw1394_release(struct inode *inode, struct file *file) | |
2709 | { | |
2710 | struct file_info *fi = file->private_data; | |
2711 | struct list_head *lh; | |
2712 | struct pending_request *req; | |
2713 | int done = 0, i, fail = 0; | |
2714 | int retval = 0; | |
2715 | struct list_head *entry; | |
2716 | struct arm_addr *addr = NULL; | |
2717 | struct host_info *hi; | |
2718 | struct file_info *fi_hlp = NULL; | |
2719 | struct arm_addr *arm_addr = NULL; | |
2720 | int another_host; | |
2721 | int csr_mod = 0; | |
4a9949d7 | 2722 | unsigned long flags; |
1da177e4 LT |
2723 | |
2724 | if (fi->iso_state != RAW1394_ISO_INACTIVE) | |
2725 | raw1394_iso_shutdown(fi); | |
2726 | ||
2727 | for (i = 0; i < 64; i++) { | |
2728 | if (fi->listen_channels & (1ULL << i)) { | |
2729 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, i); | |
2730 | } | |
2731 | } | |
2732 | ||
4a9949d7 | 2733 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 2734 | fi->listen_channels = 0; |
1da177e4 LT |
2735 | |
2736 | fail = 0; | |
2737 | /* set address-entries invalid */ | |
1da177e4 LT |
2738 | |
2739 | while (!list_empty(&fi->addr_list)) { | |
2740 | another_host = 0; | |
2741 | lh = fi->addr_list.next; | |
2742 | addr = list_entry(lh, struct arm_addr, addr_list); | |
2743 | /* another host with valid address-entry containing | |
2744 | same addressrange? */ | |
2745 | list_for_each_entry(hi, &host_info_list, list) { | |
2746 | if (hi->host != fi->host) { | |
2747 | list_for_each_entry(fi_hlp, &hi->file_info_list, | |
2748 | list) { | |
2749 | entry = fi_hlp->addr_list.next; | |
2750 | while (entry != &(fi_hlp->addr_list)) { | |
2751 | arm_addr = list_entry(entry, | |
2752 | struct | |
2753 | arm_addr, | |
2754 | addr_list); | |
2755 | if (arm_addr->start == | |
2756 | addr->start) { | |
2757 | DBGMSG | |
2758 | ("raw1394_release: " | |
2759 | "another host ownes " | |
2760 | "same addressrange"); | |
2761 | another_host = 1; | |
2762 | break; | |
2763 | } | |
2764 | entry = entry->next; | |
2765 | } | |
2766 | if (another_host) { | |
2767 | break; | |
2768 | } | |
2769 | } | |
2770 | } | |
2771 | } | |
2772 | if (!another_host) { | |
2773 | DBGMSG("raw1394_release: call hpsb_arm_unregister"); | |
2774 | retval = | |
2775 | hpsb_unregister_addrspace(&raw1394_highlevel, | |
2776 | fi->host, addr->start); | |
2777 | if (!retval) { | |
2778 | ++fail; | |
2779 | printk(KERN_ERR | |
2780 | "raw1394_release arm_Unregister failed\n"); | |
2781 | } | |
2782 | } | |
2783 | DBGMSG("raw1394_release: delete addr_entry from list"); | |
2784 | list_del(&addr->addr_list); | |
2785 | vfree(addr->addr_space_buffer); | |
2786 | kfree(addr); | |
2787 | } /* while */ | |
4a9949d7 | 2788 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2789 | if (fail > 0) { |
2790 | printk(KERN_ERR "raw1394: during addr_list-release " | |
2791 | "error(s) occurred \n"); | |
2792 | } | |
2793 | ||
2794 | while (!done) { | |
4a9949d7 | 2795 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 LT |
2796 | |
2797 | while (!list_empty(&fi->req_complete)) { | |
2798 | lh = fi->req_complete.next; | |
2799 | list_del(lh); | |
2800 | ||
2801 | req = list_entry(lh, struct pending_request, list); | |
2802 | ||
2803 | free_pending_request(req); | |
2804 | } | |
2805 | ||
2806 | if (list_empty(&fi->req_pending)) | |
2807 | done = 1; | |
2808 | ||
4a9949d7 | 2809 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
2810 | |
2811 | if (!done) | |
2812 | down_interruptible(&fi->complete_sem); | |
2813 | } | |
2814 | ||
2815 | /* Remove any sub-trees left by user space programs */ | |
2816 | for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) { | |
2817 | struct csr1212_dentry *dentry; | |
2818 | if (!fi->csr1212_dirs[i]) | |
2819 | continue; | |
2820 | for (dentry = | |
2821 | fi->csr1212_dirs[i]->value.directory.dentries_head; dentry; | |
2822 | dentry = dentry->next) { | |
2823 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2824 | root_kv, | |
2825 | dentry->kv); | |
2826 | } | |
2827 | csr1212_release_keyval(fi->csr1212_dirs[i]); | |
2828 | fi->csr1212_dirs[i] = NULL; | |
2829 | csr_mod = 1; | |
2830 | } | |
2831 | ||
2832 | if ((csr_mod || fi->cfgrom_upd) | |
2833 | && hpsb_update_config_rom_image(fi->host) < 0) | |
2834 | HPSB_ERR | |
2835 | ("Failed to generate Configuration ROM image for host %d", | |
2836 | fi->host->id); | |
2837 | ||
2838 | if (fi->state == connected) { | |
4a9949d7 | 2839 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 2840 | list_del(&fi->list); |
4a9949d7 | 2841 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2842 | |
2843 | put_device(&fi->host->device); | |
2844 | } | |
2845 | ||
2846 | kfree(fi); | |
2847 | ||
2848 | return 0; | |
2849 | } | |
2850 | ||
2851 | /*** HOTPLUG STUFF **********************************************************/ | |
2852 | /* | |
2853 | * Export information about protocols/devices supported by this driver. | |
2854 | */ | |
2855 | static struct ieee1394_device_id raw1394_id_table[] = { | |
2856 | { | |
2857 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2858 | .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2859 | .version = AVC_SW_VERSION_ENTRY & 0xffffff}, | |
2860 | { | |
2861 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2862 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2863 | .version = CAMERA_SW_VERSION_ENTRY & 0xffffff}, | |
2864 | { | |
2865 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2866 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2867 | .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff}, | |
2868 | { | |
2869 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2870 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2871 | .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff}, | |
2872 | {} | |
2873 | }; | |
2874 | ||
2875 | MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table); | |
2876 | ||
2877 | static struct hpsb_protocol_driver raw1394_driver = { | |
2878 | .name = "raw1394 Driver", | |
2879 | .id_table = raw1394_id_table, | |
2880 | .driver = { | |
2881 | .name = "raw1394", | |
2882 | .bus = &ieee1394_bus_type, | |
2883 | }, | |
2884 | }; | |
2885 | ||
2886 | /******************************************************************************/ | |
2887 | ||
2888 | static struct hpsb_highlevel raw1394_highlevel = { | |
2889 | .name = RAW1394_DEVICE_NAME, | |
2890 | .add_host = add_host, | |
2891 | .remove_host = remove_host, | |
2892 | .host_reset = host_reset, | |
2893 | .iso_receive = iso_receive, | |
2894 | .fcp_request = fcp_request, | |
2895 | }; | |
2896 | ||
2897 | static struct cdev raw1394_cdev; | |
2898 | static struct file_operations raw1394_fops = { | |
2899 | .owner = THIS_MODULE, | |
2900 | .read = raw1394_read, | |
2901 | .write = raw1394_write, | |
2902 | .mmap = raw1394_mmap, | |
2903 | .ioctl = raw1394_ioctl, | |
2904 | .poll = raw1394_poll, | |
2905 | .open = raw1394_open, | |
2906 | .release = raw1394_release, | |
2907 | }; | |
2908 | ||
2909 | static int __init init_raw1394(void) | |
2910 | { | |
2911 | int ret = 0; | |
2912 | ||
2913 | hpsb_register_highlevel(&raw1394_highlevel); | |
2914 | ||
53f46542 | 2915 | if (IS_ERR(class_device_create(hpsb_protocol_class, NULL, MKDEV( |
1da177e4 LT |
2916 | IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16), |
2917 | NULL, RAW1394_DEVICE_NAME))) { | |
2918 | ret = -EFAULT; | |
2919 | goto out_unreg; | |
2920 | } | |
2921 | ||
2922 | devfs_mk_cdev(MKDEV( | |
2923 | IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16), | |
2924 | S_IFCHR | S_IRUSR | S_IWUSR, RAW1394_DEVICE_NAME); | |
2925 | ||
2926 | cdev_init(&raw1394_cdev, &raw1394_fops); | |
2927 | raw1394_cdev.owner = THIS_MODULE; | |
2928 | kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME); | |
2929 | ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1); | |
2930 | if (ret) { | |
2931 | HPSB_ERR("raw1394 failed to register minor device block"); | |
2932 | goto out_dev; | |
2933 | } | |
2934 | ||
2935 | HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME); | |
2936 | ||
2937 | ret = hpsb_register_protocol(&raw1394_driver); | |
2938 | if (ret) { | |
2939 | HPSB_ERR("raw1394: failed to register protocol"); | |
2940 | cdev_del(&raw1394_cdev); | |
2941 | goto out_dev; | |
2942 | } | |
2943 | ||
2944 | goto out; | |
2945 | ||
2946 | out_dev: | |
2947 | devfs_remove(RAW1394_DEVICE_NAME); | |
7e25ab91 GKH |
2948 | class_device_destroy(hpsb_protocol_class, |
2949 | MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16)); | |
1da177e4 LT |
2950 | out_unreg: |
2951 | hpsb_unregister_highlevel(&raw1394_highlevel); | |
2952 | out: | |
2953 | return ret; | |
2954 | } | |
2955 | ||
2956 | static void __exit cleanup_raw1394(void) | |
2957 | { | |
7e25ab91 GKH |
2958 | class_device_destroy(hpsb_protocol_class, |
2959 | MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16)); | |
1da177e4 LT |
2960 | cdev_del(&raw1394_cdev); |
2961 | devfs_remove(RAW1394_DEVICE_NAME); | |
2962 | hpsb_unregister_highlevel(&raw1394_highlevel); | |
2963 | hpsb_unregister_protocol(&raw1394_driver); | |
2964 | } | |
2965 | ||
2966 | module_init(init_raw1394); | |
2967 | module_exit(cleanup_raw1394); | |
2968 | MODULE_LICENSE("GPL"); |