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Commit | Line | Data |
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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> | |
4bc32c4d | 44 | #include <linux/compat.h> |
1da177e4 LT |
45 | |
46 | #include "csr1212.h" | |
de4394f1 SR |
47 | #include "highlevel.h" |
48 | #include "hosts.h" | |
1da177e4 | 49 | #include "ieee1394.h" |
1da177e4 | 50 | #include "ieee1394_core.h" |
de4394f1 | 51 | #include "ieee1394_hotplug.h" |
1da177e4 | 52 | #include "ieee1394_transactions.h" |
de4394f1 SR |
53 | #include "ieee1394_types.h" |
54 | #include "iso.h" | |
55 | #include "nodemgr.h" | |
1da177e4 LT |
56 | #include "raw1394.h" |
57 | #include "raw1394-private.h" | |
58 | ||
59 | #define int2ptr(x) ((void __user *)(unsigned long)x) | |
60 | #define ptr2int(x) ((u64)(unsigned long)(void __user *)x) | |
61 | ||
62 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG | |
63 | #define RAW1394_DEBUG | |
64 | #endif | |
65 | ||
66 | #ifdef RAW1394_DEBUG | |
67 | #define DBGMSG(fmt, args...) \ | |
68 | printk(KERN_INFO "raw1394:" fmt "\n" , ## args) | |
69 | #else | |
611aa19f | 70 | #define DBGMSG(fmt, args...) do {} while (0) |
1da177e4 LT |
71 | #endif |
72 | ||
73 | static LIST_HEAD(host_info_list); | |
74 | static int host_count; | |
75 | static DEFINE_SPINLOCK(host_info_lock); | |
76 | static atomic_t internal_generation = ATOMIC_INIT(0); | |
77 | ||
78 | static atomic_t iso_buffer_size; | |
79 | static const int iso_buffer_max = 4 * 1024 * 1024; /* 4 MB */ | |
80 | ||
81 | static struct hpsb_highlevel raw1394_highlevel; | |
82 | ||
83 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, | |
84 | u64 addr, size_t length, u16 flags); | |
85 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, | |
86 | quadlet_t * data, u64 addr, size_t length, u16 flags); | |
87 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, | |
88 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, | |
89 | u16 flags); | |
90 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, | |
91 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, | |
92 | u16 flags); | |
93 | static struct hpsb_address_ops arm_ops = { | |
94 | .read = arm_read, | |
95 | .write = arm_write, | |
96 | .lock = arm_lock, | |
97 | .lock64 = arm_lock64, | |
98 | }; | |
99 | ||
100 | static void queue_complete_cb(struct pending_request *req); | |
101 | ||
dd0fc66f | 102 | static struct pending_request *__alloc_pending_request(gfp_t flags) |
1da177e4 LT |
103 | { |
104 | struct pending_request *req; | |
105 | ||
8551158a SR |
106 | req = kzalloc(sizeof(*req), flags); |
107 | if (req) | |
1da177e4 | 108 | INIT_LIST_HEAD(&req->list); |
1da177e4 LT |
109 | |
110 | return req; | |
111 | } | |
112 | ||
113 | static inline struct pending_request *alloc_pending_request(void) | |
114 | { | |
115 | return __alloc_pending_request(SLAB_KERNEL); | |
116 | } | |
117 | ||
118 | static void free_pending_request(struct pending_request *req) | |
119 | { | |
120 | if (req->ibs) { | |
121 | if (atomic_dec_and_test(&req->ibs->refcount)) { | |
122 | atomic_sub(req->ibs->data_size, &iso_buffer_size); | |
123 | kfree(req->ibs); | |
124 | } | |
125 | } else if (req->free_data) { | |
126 | kfree(req->data); | |
127 | } | |
128 | hpsb_free_packet(req->packet); | |
129 | kfree(req); | |
130 | } | |
131 | ||
132 | /* fi->reqlists_lock must be taken */ | |
133 | static void __queue_complete_req(struct pending_request *req) | |
134 | { | |
135 | struct file_info *fi = req->file_info; | |
1da177e4 | 136 | |
45289bf6 SR |
137 | list_move_tail(&req->list, &fi->req_complete); |
138 | wake_up(&fi->wait_complete); | |
1da177e4 LT |
139 | } |
140 | ||
141 | static void queue_complete_req(struct pending_request *req) | |
142 | { | |
143 | unsigned long flags; | |
144 | struct file_info *fi = req->file_info; | |
145 | ||
146 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
147 | __queue_complete_req(req); | |
148 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
149 | } | |
150 | ||
151 | static void queue_complete_cb(struct pending_request *req) | |
152 | { | |
153 | struct hpsb_packet *packet = req->packet; | |
154 | int rcode = (packet->header[1] >> 12) & 0xf; | |
155 | ||
156 | switch (packet->ack_code) { | |
157 | case ACKX_NONE: | |
158 | case ACKX_SEND_ERROR: | |
159 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
160 | break; | |
161 | case ACKX_ABORTED: | |
162 | req->req.error = RAW1394_ERROR_ABORTED; | |
163 | break; | |
164 | case ACKX_TIMEOUT: | |
165 | req->req.error = RAW1394_ERROR_TIMEOUT; | |
166 | break; | |
167 | default: | |
168 | req->req.error = (packet->ack_code << 16) | rcode; | |
169 | break; | |
170 | } | |
171 | ||
172 | if (!((packet->ack_code == ACK_PENDING) && (rcode == RCODE_COMPLETE))) { | |
173 | req->req.length = 0; | |
174 | } | |
175 | ||
176 | if ((req->req.type == RAW1394_REQ_ASYNC_READ) || | |
177 | (req->req.type == RAW1394_REQ_ASYNC_WRITE) || | |
178 | (req->req.type == RAW1394_REQ_ASYNC_STREAM) || | |
179 | (req->req.type == RAW1394_REQ_LOCK) || | |
180 | (req->req.type == RAW1394_REQ_LOCK64)) | |
181 | hpsb_free_tlabel(packet); | |
182 | ||
183 | queue_complete_req(req); | |
184 | } | |
185 | ||
186 | static void add_host(struct hpsb_host *host) | |
187 | { | |
188 | struct host_info *hi; | |
189 | unsigned long flags; | |
190 | ||
8551158a | 191 | hi = kmalloc(sizeof(*hi), GFP_KERNEL); |
1da177e4 | 192 | |
8551158a | 193 | if (hi) { |
1da177e4 LT |
194 | INIT_LIST_HEAD(&hi->list); |
195 | hi->host = host; | |
196 | INIT_LIST_HEAD(&hi->file_info_list); | |
197 | ||
198 | spin_lock_irqsave(&host_info_lock, flags); | |
199 | list_add_tail(&hi->list, &host_info_list); | |
200 | host_count++; | |
201 | spin_unlock_irqrestore(&host_info_lock, flags); | |
202 | } | |
203 | ||
204 | atomic_inc(&internal_generation); | |
205 | } | |
206 | ||
207 | static struct host_info *find_host_info(struct hpsb_host *host) | |
208 | { | |
209 | struct host_info *hi; | |
210 | ||
211 | list_for_each_entry(hi, &host_info_list, list) | |
212 | if (hi->host == host) | |
213 | return hi; | |
214 | ||
215 | return NULL; | |
216 | } | |
217 | ||
218 | static void remove_host(struct hpsb_host *host) | |
219 | { | |
220 | struct host_info *hi; | |
221 | unsigned long flags; | |
222 | ||
223 | spin_lock_irqsave(&host_info_lock, flags); | |
224 | hi = find_host_info(host); | |
225 | ||
226 | if (hi != NULL) { | |
227 | list_del(&hi->list); | |
228 | host_count--; | |
229 | /* | |
230 | FIXME: address ranges should be removed | |
231 | and fileinfo states should be initialized | |
232 | (including setting generation to | |
233 | internal-generation ...) | |
234 | */ | |
235 | } | |
236 | spin_unlock_irqrestore(&host_info_lock, flags); | |
237 | ||
238 | if (hi == NULL) { | |
239 | printk(KERN_ERR "raw1394: attempt to remove unknown host " | |
240 | "0x%p\n", host); | |
241 | return; | |
242 | } | |
243 | ||
244 | kfree(hi); | |
245 | ||
246 | atomic_inc(&internal_generation); | |
247 | } | |
248 | ||
249 | static void host_reset(struct hpsb_host *host) | |
250 | { | |
251 | unsigned long flags; | |
252 | struct host_info *hi; | |
253 | struct file_info *fi; | |
254 | struct pending_request *req; | |
255 | ||
256 | spin_lock_irqsave(&host_info_lock, flags); | |
257 | hi = find_host_info(host); | |
258 | ||
259 | if (hi != NULL) { | |
260 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
261 | if (fi->notification == RAW1394_NOTIFY_ON) { | |
54e6ecb2 | 262 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
263 | |
264 | if (req != NULL) { | |
265 | req->file_info = fi; | |
266 | req->req.type = RAW1394_REQ_BUS_RESET; | |
267 | req->req.generation = | |
268 | get_hpsb_generation(host); | |
269 | req->req.misc = (host->node_id << 16) | |
270 | | host->node_count; | |
271 | if (fi->protocol_version > 3) { | |
272 | req->req.misc |= | |
273 | (NODEID_TO_NODE | |
274 | (host->irm_id) | |
275 | << 8); | |
276 | } | |
277 | ||
278 | queue_complete_req(req); | |
279 | } | |
280 | } | |
281 | } | |
282 | } | |
283 | spin_unlock_irqrestore(&host_info_lock, flags); | |
284 | } | |
285 | ||
286 | static void iso_receive(struct hpsb_host *host, int channel, quadlet_t * data, | |
287 | size_t length) | |
288 | { | |
289 | unsigned long flags; | |
290 | struct host_info *hi; | |
291 | struct file_info *fi; | |
292 | struct pending_request *req, *req_next; | |
293 | struct iso_block_store *ibs = NULL; | |
294 | LIST_HEAD(reqs); | |
295 | ||
296 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { | |
297 | HPSB_INFO("dropped iso packet"); | |
298 | return; | |
299 | } | |
300 | ||
301 | spin_lock_irqsave(&host_info_lock, flags); | |
302 | hi = find_host_info(host); | |
303 | ||
304 | if (hi != NULL) { | |
305 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
306 | if (!(fi->listen_channels & (1ULL << channel))) | |
307 | continue; | |
308 | ||
54e6ecb2 | 309 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
310 | if (!req) |
311 | break; | |
312 | ||
313 | if (!ibs) { | |
8551158a | 314 | ibs = kmalloc(sizeof(*ibs) + length, |
54e6ecb2 | 315 | GFP_ATOMIC); |
1da177e4 LT |
316 | if (!ibs) { |
317 | kfree(req); | |
318 | break; | |
319 | } | |
320 | ||
321 | atomic_add(length, &iso_buffer_size); | |
322 | atomic_set(&ibs->refcount, 0); | |
323 | ibs->data_size = length; | |
324 | memcpy(ibs->data, data, length); | |
325 | } | |
326 | ||
327 | atomic_inc(&ibs->refcount); | |
328 | ||
329 | req->file_info = fi; | |
330 | req->ibs = ibs; | |
331 | req->data = ibs->data; | |
332 | req->req.type = RAW1394_REQ_ISO_RECEIVE; | |
333 | req->req.generation = get_hpsb_generation(host); | |
334 | req->req.misc = 0; | |
335 | req->req.recvb = ptr2int(fi->iso_buffer); | |
336 | req->req.length = min(length, fi->iso_buffer_length); | |
337 | ||
338 | list_add_tail(&req->list, &reqs); | |
339 | } | |
340 | } | |
341 | spin_unlock_irqrestore(&host_info_lock, flags); | |
342 | ||
343 | list_for_each_entry_safe(req, req_next, &reqs, list) | |
344 | queue_complete_req(req); | |
345 | } | |
346 | ||
347 | static void fcp_request(struct hpsb_host *host, int nodeid, int direction, | |
348 | int cts, u8 * data, size_t length) | |
349 | { | |
350 | unsigned long flags; | |
351 | struct host_info *hi; | |
352 | struct file_info *fi; | |
353 | struct pending_request *req, *req_next; | |
354 | struct iso_block_store *ibs = NULL; | |
355 | LIST_HEAD(reqs); | |
356 | ||
357 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { | |
358 | HPSB_INFO("dropped fcp request"); | |
359 | return; | |
360 | } | |
361 | ||
362 | spin_lock_irqsave(&host_info_lock, flags); | |
363 | hi = find_host_info(host); | |
364 | ||
365 | if (hi != NULL) { | |
366 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
367 | if (!fi->fcp_buffer) | |
368 | continue; | |
369 | ||
54e6ecb2 | 370 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
371 | if (!req) |
372 | break; | |
373 | ||
374 | if (!ibs) { | |
8551158a | 375 | ibs = kmalloc(sizeof(*ibs) + length, |
54e6ecb2 | 376 | GFP_ATOMIC); |
1da177e4 LT |
377 | if (!ibs) { |
378 | kfree(req); | |
379 | break; | |
380 | } | |
381 | ||
382 | atomic_add(length, &iso_buffer_size); | |
383 | atomic_set(&ibs->refcount, 0); | |
384 | ibs->data_size = length; | |
385 | memcpy(ibs->data, data, length); | |
386 | } | |
387 | ||
388 | atomic_inc(&ibs->refcount); | |
389 | ||
390 | req->file_info = fi; | |
391 | req->ibs = ibs; | |
392 | req->data = ibs->data; | |
393 | req->req.type = RAW1394_REQ_FCP_REQUEST; | |
394 | req->req.generation = get_hpsb_generation(host); | |
395 | req->req.misc = nodeid | (direction << 16); | |
396 | req->req.recvb = ptr2int(fi->fcp_buffer); | |
397 | req->req.length = length; | |
398 | ||
399 | list_add_tail(&req->list, &reqs); | |
400 | } | |
401 | } | |
402 | spin_unlock_irqrestore(&host_info_lock, flags); | |
403 | ||
404 | list_for_each_entry_safe(req, req_next, &reqs, list) | |
405 | queue_complete_req(req); | |
406 | } | |
407 | ||
4bc32c4d AK |
408 | #ifdef CONFIG_COMPAT |
409 | struct compat_raw1394_req { | |
7597028a BC |
410 | __u32 type; |
411 | __s32 error; | |
412 | __u32 misc; | |
4bc32c4d | 413 | |
7597028a BC |
414 | __u32 generation; |
415 | __u32 length; | |
4bc32c4d | 416 | |
7597028a | 417 | __u64 address; |
4bc32c4d | 418 | |
7597028a | 419 | __u64 tag; |
4bc32c4d | 420 | |
7597028a BC |
421 | __u64 sendb; |
422 | __u64 recvb; | |
423 | } __attribute__((packed)); | |
4bc32c4d AK |
424 | |
425 | static const char __user *raw1394_compat_write(const char __user *buf) | |
426 | { | |
7597028a | 427 | struct compat_raw1394_req __user *cr = (typeof(cr)) buf; |
4bc32c4d AK |
428 | struct raw1394_request __user *r; |
429 | r = compat_alloc_user_space(sizeof(struct raw1394_request)); | |
430 | ||
431 | #define C(x) __copy_in_user(&r->x, &cr->x, sizeof(r->x)) | |
432 | ||
433 | if (copy_in_user(r, cr, sizeof(struct compat_raw1394_req)) || | |
7597028a BC |
434 | C(address) || |
435 | C(tag) || | |
436 | C(sendb) || | |
437 | C(recvb)) | |
4bc32c4d AK |
438 | return ERR_PTR(-EFAULT); |
439 | return (const char __user *)r; | |
440 | } | |
441 | #undef C | |
442 | ||
443 | #define P(x) __put_user(r->x, &cr->x) | |
444 | ||
7597028a | 445 | static int |
4bc32c4d AK |
446 | raw1394_compat_read(const char __user *buf, struct raw1394_request *r) |
447 | { | |
7597028a BC |
448 | struct compat_raw1394_req __user *cr = (typeof(cr)) r; |
449 | if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) || | |
4bc32c4d AK |
450 | P(type) || |
451 | P(error) || | |
452 | P(misc) || | |
453 | P(generation) || | |
454 | P(length) || | |
455 | P(address) || | |
456 | P(tag) || | |
457 | P(sendb) || | |
458 | P(recvb)) | |
459 | return -EFAULT; | |
460 | return sizeof(struct compat_raw1394_req); | |
461 | } | |
462 | #undef P | |
463 | ||
464 | #endif | |
465 | ||
45289bf6 SR |
466 | /* get next completed request (caller must hold fi->reqlists_lock) */ |
467 | static inline struct pending_request *__next_complete_req(struct file_info *fi) | |
468 | { | |
469 | struct list_head *lh; | |
470 | struct pending_request *req = NULL; | |
471 | ||
472 | if (!list_empty(&fi->req_complete)) { | |
473 | lh = fi->req_complete.next; | |
474 | list_del(lh); | |
475 | req = list_entry(lh, struct pending_request, list); | |
476 | } | |
477 | return req; | |
478 | } | |
479 | ||
480 | /* atomically get next completed request */ | |
481 | static struct pending_request *next_complete_req(struct file_info *fi) | |
482 | { | |
483 | unsigned long flags; | |
484 | struct pending_request *req; | |
485 | ||
486 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
487 | req = __next_complete_req(fi); | |
488 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
489 | return req; | |
490 | } | |
4bc32c4d | 491 | |
1da177e4 LT |
492 | static ssize_t raw1394_read(struct file *file, char __user * buffer, |
493 | size_t count, loff_t * offset_is_ignored) | |
494 | { | |
495 | struct file_info *fi = (struct file_info *)file->private_data; | |
1da177e4 LT |
496 | struct pending_request *req; |
497 | ssize_t ret; | |
498 | ||
4bc32c4d AK |
499 | #ifdef CONFIG_COMPAT |
500 | if (count == sizeof(struct compat_raw1394_req)) { | |
501 | /* ok */ | |
502 | } else | |
503 | #endif | |
1da177e4 LT |
504 | if (count != sizeof(struct raw1394_request)) { |
505 | return -EINVAL; | |
506 | } | |
507 | ||
508 | if (!access_ok(VERIFY_WRITE, buffer, count)) { | |
509 | return -EFAULT; | |
510 | } | |
511 | ||
512 | if (file->f_flags & O_NONBLOCK) { | |
45289bf6 | 513 | if (!(req = next_complete_req(fi))) |
1da177e4 | 514 | return -EAGAIN; |
1da177e4 | 515 | } else { |
45289bf6 SR |
516 | /* |
517 | * NB: We call the macro wait_event_interruptible() with a | |
518 | * condition argument with side effect. This is only possible | |
519 | * because the side effect does not occur until the condition | |
520 | * became true, and wait_event_interruptible() won't evaluate | |
521 | * the condition again after that. | |
522 | */ | |
523 | if (wait_event_interruptible(fi->wait_complete, | |
524 | (req = next_complete_req(fi)))) | |
1da177e4 | 525 | return -ERESTARTSYS; |
1da177e4 LT |
526 | } |
527 | ||
1da177e4 LT |
528 | if (req->req.length) { |
529 | if (copy_to_user(int2ptr(req->req.recvb), req->data, | |
530 | req->req.length)) { | |
531 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
532 | } | |
533 | } | |
1da177e4 | 534 | |
4bc32c4d | 535 | #ifdef CONFIG_COMPAT |
7597028a BC |
536 | if (count == sizeof(struct compat_raw1394_req) && |
537 | sizeof(struct compat_raw1394_req) != | |
538 | sizeof(struct raw1394_request)) { | |
4bc32c4d | 539 | ret = raw1394_compat_read(buffer, &req->req); |
7597028a | 540 | } else |
4bc32c4d AK |
541 | #endif |
542 | { | |
543 | if (copy_to_user(buffer, &req->req, sizeof(req->req))) { | |
544 | ret = -EFAULT; | |
545 | goto out; | |
7597028a | 546 | } |
4bc32c4d AK |
547 | ret = (ssize_t) sizeof(struct raw1394_request); |
548 | } | |
1da177e4 LT |
549 | out: |
550 | free_pending_request(req); | |
551 | return ret; | |
552 | } | |
553 | ||
554 | static int state_opened(struct file_info *fi, struct pending_request *req) | |
555 | { | |
556 | if (req->req.type == RAW1394_REQ_INITIALIZE) { | |
557 | switch (req->req.misc) { | |
558 | case RAW1394_KERNELAPI_VERSION: | |
559 | case 3: | |
560 | fi->state = initialized; | |
561 | fi->protocol_version = req->req.misc; | |
562 | req->req.error = RAW1394_ERROR_NONE; | |
563 | req->req.generation = atomic_read(&internal_generation); | |
564 | break; | |
565 | ||
566 | default: | |
567 | req->req.error = RAW1394_ERROR_COMPAT; | |
568 | req->req.misc = RAW1394_KERNELAPI_VERSION; | |
569 | } | |
570 | } else { | |
571 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
572 | } | |
573 | ||
574 | req->req.length = 0; | |
575 | queue_complete_req(req); | |
576 | return sizeof(struct raw1394_request); | |
577 | } | |
578 | ||
579 | static int state_initialized(struct file_info *fi, struct pending_request *req) | |
580 | { | |
4a9949d7 | 581 | unsigned long flags; |
1da177e4 LT |
582 | struct host_info *hi; |
583 | struct raw1394_khost_list *khl; | |
584 | ||
585 | if (req->req.generation != atomic_read(&internal_generation)) { | |
586 | req->req.error = RAW1394_ERROR_GENERATION; | |
587 | req->req.generation = atomic_read(&internal_generation); | |
588 | req->req.length = 0; | |
589 | queue_complete_req(req); | |
590 | return sizeof(struct raw1394_request); | |
591 | } | |
592 | ||
593 | switch (req->req.type) { | |
594 | case RAW1394_REQ_LIST_CARDS: | |
4a9949d7 | 595 | spin_lock_irqsave(&host_info_lock, flags); |
54e6ecb2 | 596 | khl = kmalloc(sizeof(*khl) * host_count, GFP_ATOMIC); |
1da177e4 | 597 | |
8551158a | 598 | if (khl) { |
1da177e4 LT |
599 | req->req.misc = host_count; |
600 | req->data = (quadlet_t *) khl; | |
601 | ||
602 | list_for_each_entry(hi, &host_info_list, list) { | |
603 | khl->nodes = hi->host->node_count; | |
604 | strcpy(khl->name, hi->host->driver->name); | |
605 | khl++; | |
606 | } | |
607 | } | |
4a9949d7 | 608 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 | 609 | |
8551158a | 610 | if (khl) { |
1da177e4 LT |
611 | req->req.error = RAW1394_ERROR_NONE; |
612 | req->req.length = min(req->req.length, | |
613 | (u32) (sizeof | |
614 | (struct raw1394_khost_list) | |
615 | * req->req.misc)); | |
616 | req->free_data = 1; | |
617 | } else { | |
618 | return -ENOMEM; | |
619 | } | |
620 | break; | |
621 | ||
622 | case RAW1394_REQ_SET_CARD: | |
4a9949d7 | 623 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 LT |
624 | if (req->req.misc < host_count) { |
625 | list_for_each_entry(hi, &host_info_list, list) { | |
626 | if (!req->req.misc--) | |
627 | break; | |
628 | } | |
629 | get_device(&hi->host->device); // XXX Need to handle failure case | |
630 | list_add_tail(&fi->list, &hi->file_info_list); | |
631 | fi->host = hi->host; | |
632 | fi->state = connected; | |
633 | ||
634 | req->req.error = RAW1394_ERROR_NONE; | |
635 | req->req.generation = get_hpsb_generation(fi->host); | |
636 | req->req.misc = (fi->host->node_id << 16) | |
637 | | fi->host->node_count; | |
638 | if (fi->protocol_version > 3) { | |
639 | req->req.misc |= | |
640 | NODEID_TO_NODE(fi->host->irm_id) << 8; | |
641 | } | |
642 | } else { | |
643 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
644 | } | |
4a9949d7 | 645 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
646 | |
647 | req->req.length = 0; | |
648 | break; | |
649 | ||
650 | default: | |
651 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
652 | req->req.length = 0; | |
653 | break; | |
654 | } | |
655 | ||
656 | queue_complete_req(req); | |
657 | return sizeof(struct raw1394_request); | |
658 | } | |
659 | ||
660 | static void handle_iso_listen(struct file_info *fi, struct pending_request *req) | |
661 | { | |
662 | int channel = req->req.misc; | |
663 | ||
1da177e4 LT |
664 | if ((channel > 63) || (channel < -64)) { |
665 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
666 | } else if (channel >= 0) { | |
667 | /* allocate channel req.misc */ | |
668 | if (fi->listen_channels & (1ULL << channel)) { | |
669 | req->req.error = RAW1394_ERROR_ALREADY; | |
670 | } else { | |
671 | if (hpsb_listen_channel | |
672 | (&raw1394_highlevel, fi->host, channel)) { | |
673 | req->req.error = RAW1394_ERROR_ALREADY; | |
674 | } else { | |
675 | fi->listen_channels |= 1ULL << channel; | |
676 | fi->iso_buffer = int2ptr(req->req.recvb); | |
677 | fi->iso_buffer_length = req->req.length; | |
678 | } | |
679 | } | |
680 | } else { | |
681 | /* deallocate channel (one's complement neg) req.misc */ | |
682 | channel = ~channel; | |
683 | ||
684 | if (fi->listen_channels & (1ULL << channel)) { | |
685 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, | |
686 | channel); | |
687 | fi->listen_channels &= ~(1ULL << channel); | |
688 | } else { | |
689 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
690 | } | |
691 | } | |
692 | ||
693 | req->req.length = 0; | |
694 | queue_complete_req(req); | |
1da177e4 LT |
695 | } |
696 | ||
697 | static void handle_fcp_listen(struct file_info *fi, struct pending_request *req) | |
698 | { | |
699 | if (req->req.misc) { | |
700 | if (fi->fcp_buffer) { | |
701 | req->req.error = RAW1394_ERROR_ALREADY; | |
702 | } else { | |
703 | fi->fcp_buffer = int2ptr(req->req.recvb); | |
704 | } | |
705 | } else { | |
706 | if (!fi->fcp_buffer) { | |
707 | req->req.error = RAW1394_ERROR_ALREADY; | |
708 | } else { | |
709 | fi->fcp_buffer = NULL; | |
710 | } | |
711 | } | |
712 | ||
713 | req->req.length = 0; | |
714 | queue_complete_req(req); | |
715 | } | |
716 | ||
717 | static int handle_async_request(struct file_info *fi, | |
718 | struct pending_request *req, int node) | |
719 | { | |
4a9949d7 | 720 | unsigned long flags; |
1da177e4 LT |
721 | struct hpsb_packet *packet = NULL; |
722 | u64 addr = req->req.address & 0xffffffffffffULL; | |
723 | ||
724 | switch (req->req.type) { | |
725 | case RAW1394_REQ_ASYNC_READ: | |
726 | DBGMSG("read_request called"); | |
727 | packet = | |
728 | hpsb_make_readpacket(fi->host, node, addr, req->req.length); | |
729 | ||
730 | if (!packet) | |
731 | return -ENOMEM; | |
732 | ||
733 | if (req->req.length == 4) | |
734 | req->data = &packet->header[3]; | |
735 | else | |
736 | req->data = packet->data; | |
737 | ||
738 | break; | |
739 | ||
740 | case RAW1394_REQ_ASYNC_WRITE: | |
741 | DBGMSG("write_request called"); | |
742 | ||
743 | packet = hpsb_make_writepacket(fi->host, node, addr, NULL, | |
744 | req->req.length); | |
745 | if (!packet) | |
746 | return -ENOMEM; | |
747 | ||
748 | if (req->req.length == 4) { | |
749 | if (copy_from_user | |
750 | (&packet->header[3], int2ptr(req->req.sendb), | |
751 | req->req.length)) | |
752 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
753 | } else { | |
754 | if (copy_from_user | |
755 | (packet->data, int2ptr(req->req.sendb), | |
756 | req->req.length)) | |
757 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
758 | } | |
759 | ||
760 | req->req.length = 0; | |
761 | break; | |
762 | ||
763 | case RAW1394_REQ_ASYNC_STREAM: | |
764 | DBGMSG("stream_request called"); | |
765 | ||
766 | packet = | |
767 | hpsb_make_streampacket(fi->host, NULL, req->req.length, | |
768 | node & 0x3f /*channel */ , | |
769 | (req->req.misc >> 16) & 0x3, | |
770 | req->req.misc & 0xf); | |
771 | if (!packet) | |
772 | return -ENOMEM; | |
773 | ||
774 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
775 | req->req.length)) | |
776 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
777 | ||
778 | req->req.length = 0; | |
779 | break; | |
780 | ||
781 | case RAW1394_REQ_LOCK: | |
782 | DBGMSG("lock_request called"); | |
783 | if ((req->req.misc == EXTCODE_FETCH_ADD) | |
784 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { | |
785 | if (req->req.length != 4) { | |
786 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
787 | break; | |
788 | } | |
789 | } else { | |
790 | if (req->req.length != 8) { | |
791 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
792 | break; | |
793 | } | |
794 | } | |
795 | ||
796 | packet = hpsb_make_lockpacket(fi->host, node, addr, | |
797 | req->req.misc, NULL, 0); | |
798 | if (!packet) | |
799 | return -ENOMEM; | |
800 | ||
801 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
802 | req->req.length)) { | |
803 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
804 | break; | |
805 | } | |
806 | ||
807 | req->data = packet->data; | |
808 | req->req.length = 4; | |
809 | break; | |
810 | ||
811 | case RAW1394_REQ_LOCK64: | |
812 | DBGMSG("lock64_request called"); | |
813 | if ((req->req.misc == EXTCODE_FETCH_ADD) | |
814 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { | |
815 | if (req->req.length != 8) { | |
816 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
817 | break; | |
818 | } | |
819 | } else { | |
820 | if (req->req.length != 16) { | |
821 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
822 | break; | |
823 | } | |
824 | } | |
825 | packet = hpsb_make_lock64packet(fi->host, node, addr, | |
826 | req->req.misc, NULL, 0); | |
827 | if (!packet) | |
828 | return -ENOMEM; | |
829 | ||
830 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
831 | req->req.length)) { | |
832 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
833 | break; | |
834 | } | |
835 | ||
836 | req->data = packet->data; | |
837 | req->req.length = 8; | |
838 | break; | |
839 | ||
840 | default: | |
841 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
842 | } | |
843 | ||
844 | req->packet = packet; | |
845 | ||
846 | if (req->req.error) { | |
847 | req->req.length = 0; | |
848 | queue_complete_req(req); | |
849 | return sizeof(struct raw1394_request); | |
850 | } | |
851 | ||
852 | hpsb_set_packet_complete_task(packet, | |
853 | (void (*)(void *))queue_complete_cb, req); | |
854 | ||
4a9949d7 | 855 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 856 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 857 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
858 | |
859 | packet->generation = req->req.generation; | |
860 | ||
861 | if (hpsb_send_packet(packet) < 0) { | |
862 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
863 | req->req.length = 0; | |
864 | hpsb_free_tlabel(packet); | |
865 | queue_complete_req(req); | |
866 | } | |
867 | return sizeof(struct raw1394_request); | |
868 | } | |
869 | ||
870 | static int handle_iso_send(struct file_info *fi, struct pending_request *req, | |
871 | int channel) | |
872 | { | |
4a9949d7 | 873 | unsigned long flags; |
1da177e4 LT |
874 | struct hpsb_packet *packet; |
875 | ||
876 | packet = hpsb_make_isopacket(fi->host, req->req.length, channel & 0x3f, | |
877 | (req->req.misc >> 16) & 0x3, | |
878 | req->req.misc & 0xf); | |
879 | if (!packet) | |
880 | return -ENOMEM; | |
881 | ||
882 | packet->speed_code = req->req.address & 0x3; | |
883 | ||
884 | req->packet = packet; | |
885 | ||
886 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
887 | req->req.length)) { | |
888 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
889 | req->req.length = 0; | |
890 | queue_complete_req(req); | |
891 | return sizeof(struct raw1394_request); | |
892 | } | |
893 | ||
894 | req->req.length = 0; | |
895 | hpsb_set_packet_complete_task(packet, | |
896 | (void (*)(void *))queue_complete_req, | |
897 | req); | |
898 | ||
4a9949d7 | 899 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 900 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 901 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
902 | |
903 | /* Update the generation of the packet just before sending. */ | |
904 | packet->generation = req->req.generation; | |
905 | ||
906 | if (hpsb_send_packet(packet) < 0) { | |
907 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
908 | queue_complete_req(req); | |
909 | } | |
910 | ||
911 | return sizeof(struct raw1394_request); | |
912 | } | |
913 | ||
914 | static int handle_async_send(struct file_info *fi, struct pending_request *req) | |
915 | { | |
4a9949d7 | 916 | unsigned long flags; |
1da177e4 LT |
917 | struct hpsb_packet *packet; |
918 | int header_length = req->req.misc & 0xffff; | |
919 | int expect_response = req->req.misc >> 16; | |
920 | ||
921 | if ((header_length > req->req.length) || (header_length < 12)) { | |
922 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
923 | req->req.length = 0; | |
924 | queue_complete_req(req); | |
925 | return sizeof(struct raw1394_request); | |
926 | } | |
927 | ||
928 | packet = hpsb_alloc_packet(req->req.length - header_length); | |
929 | req->packet = packet; | |
930 | if (!packet) | |
931 | return -ENOMEM; | |
932 | ||
933 | if (copy_from_user(packet->header, int2ptr(req->req.sendb), | |
934 | header_length)) { | |
935 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
936 | req->req.length = 0; | |
937 | queue_complete_req(req); | |
938 | return sizeof(struct raw1394_request); | |
939 | } | |
940 | ||
941 | if (copy_from_user | |
942 | (packet->data, int2ptr(req->req.sendb) + header_length, | |
943 | packet->data_size)) { | |
944 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
945 | req->req.length = 0; | |
946 | queue_complete_req(req); | |
947 | return sizeof(struct raw1394_request); | |
948 | } | |
949 | ||
950 | packet->type = hpsb_async; | |
951 | packet->node_id = packet->header[0] >> 16; | |
952 | packet->tcode = (packet->header[0] >> 4) & 0xf; | |
953 | packet->tlabel = (packet->header[0] >> 10) & 0x3f; | |
954 | packet->host = fi->host; | |
955 | packet->expect_response = expect_response; | |
956 | packet->header_size = header_length; | |
957 | packet->data_size = req->req.length - header_length; | |
958 | ||
959 | req->req.length = 0; | |
960 | hpsb_set_packet_complete_task(packet, | |
961 | (void (*)(void *))queue_complete_cb, req); | |
962 | ||
4a9949d7 | 963 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 964 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 965 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
966 | |
967 | /* Update the generation of the packet just before sending. */ | |
968 | packet->generation = req->req.generation; | |
969 | ||
970 | if (hpsb_send_packet(packet) < 0) { | |
971 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
972 | queue_complete_req(req); | |
973 | } | |
974 | ||
975 | return sizeof(struct raw1394_request); | |
976 | } | |
977 | ||
978 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, | |
979 | u64 addr, size_t length, u16 flags) | |
980 | { | |
4a9949d7 | 981 | unsigned long irqflags; |
1da177e4 LT |
982 | struct pending_request *req; |
983 | struct host_info *hi; | |
984 | struct file_info *fi = NULL; | |
985 | struct list_head *entry; | |
986 | struct arm_addr *arm_addr = NULL; | |
987 | struct arm_request *arm_req = NULL; | |
988 | struct arm_response *arm_resp = NULL; | |
989 | int found = 0, size = 0, rcode = -1; | |
990 | struct arm_request_response *arm_req_resp = NULL; | |
991 | ||
992 | DBGMSG("arm_read called by node: %X" | |
993 | "addr: %4.4x %8.8x length: %Zu", nodeid, | |
994 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), | |
995 | length); | |
4a9949d7 | 996 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
997 | hi = find_host_info(host); /* search address-entry */ |
998 | if (hi != NULL) { | |
999 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1000 | entry = fi->addr_list.next; | |
1001 | while (entry != &(fi->addr_list)) { | |
1002 | arm_addr = | |
1003 | list_entry(entry, struct arm_addr, | |
1004 | addr_list); | |
1005 | if (((arm_addr->start) <= (addr)) | |
1006 | && ((arm_addr->end) >= (addr + length))) { | |
1007 | found = 1; | |
1008 | break; | |
1009 | } | |
1010 | entry = entry->next; | |
1011 | } | |
1012 | if (found) { | |
1013 | break; | |
1014 | } | |
1015 | } | |
1016 | } | |
1017 | rcode = -1; | |
1018 | if (!found) { | |
1019 | printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found" | |
1020 | " -> rcode_address_error\n"); | |
4a9949d7 | 1021 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1022 | return (RCODE_ADDRESS_ERROR); |
1023 | } else { | |
1024 | DBGMSG("arm_read addr_entry FOUND"); | |
1025 | } | |
1026 | if (arm_addr->rec_length < length) { | |
1027 | DBGMSG("arm_read blocklength too big -> rcode_data_error"); | |
1028 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ | |
1029 | } | |
1030 | if (rcode == -1) { | |
1031 | if (arm_addr->access_rights & ARM_READ) { | |
1032 | if (!(arm_addr->client_transactions & ARM_READ)) { | |
1033 | memcpy(buffer, | |
1034 | (arm_addr->addr_space_buffer) + (addr - | |
1035 | (arm_addr-> | |
1036 | start)), | |
1037 | length); | |
1038 | DBGMSG("arm_read -> (rcode_complete)"); | |
1039 | rcode = RCODE_COMPLETE; | |
1040 | } | |
1041 | } else { | |
1042 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1043 | DBGMSG("arm_read -> rcode_type_error (access denied)"); | |
1044 | } | |
1045 | } | |
1046 | if (arm_addr->notification_options & ARM_READ) { | |
1047 | DBGMSG("arm_read -> entering notification-section"); | |
54e6ecb2 | 1048 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
1049 | if (!req) { |
1050 | DBGMSG("arm_read -> rcode_conflict_error"); | |
4a9949d7 | 1051 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1052 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1053 | The request may be retried */ | |
1054 | } | |
1055 | if (rcode == RCODE_COMPLETE) { | |
1056 | size = | |
1057 | sizeof(struct arm_request) + | |
1058 | sizeof(struct arm_response) + | |
1059 | length * sizeof(byte_t) + | |
1060 | sizeof(struct arm_request_response); | |
1061 | } else { | |
1062 | size = | |
1063 | sizeof(struct arm_request) + | |
1064 | sizeof(struct arm_response) + | |
1065 | sizeof(struct arm_request_response); | |
1066 | } | |
54e6ecb2 | 1067 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1068 | if (!(req->data)) { |
1069 | free_pending_request(req); | |
1070 | DBGMSG("arm_read -> rcode_conflict_error"); | |
4a9949d7 | 1071 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1072 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1073 | The request may be retried */ | |
1074 | } | |
1075 | req->free_data = 1; | |
1076 | req->file_info = fi; | |
1077 | req->req.type = RAW1394_REQ_ARM; | |
1078 | req->req.generation = get_hpsb_generation(host); | |
1079 | req->req.misc = | |
1080 | (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF)); | |
1081 | req->req.tag = arm_addr->arm_tag; | |
1082 | req->req.recvb = arm_addr->recvb; | |
1083 | req->req.length = size; | |
1084 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1085 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1086 | (sizeof | |
1087 | (struct | |
1088 | arm_request_response))); | |
1089 | arm_resp = | |
1090 | (struct arm_response *)((byte_t *) (arm_req) + | |
1091 | (sizeof(struct arm_request))); | |
1092 | arm_req->buffer = NULL; | |
1093 | arm_resp->buffer = NULL; | |
1094 | if (rcode == RCODE_COMPLETE) { | |
1095 | byte_t *buf = | |
1096 | (byte_t *) arm_resp + sizeof(struct arm_response); | |
1097 | memcpy(buf, | |
1098 | (arm_addr->addr_space_buffer) + (addr - | |
1099 | (arm_addr-> | |
1100 | start)), | |
1101 | length); | |
1102 | arm_resp->buffer = | |
1103 | int2ptr((arm_addr->recvb) + | |
1104 | sizeof(struct arm_request_response) + | |
1105 | sizeof(struct arm_request) + | |
1106 | sizeof(struct arm_response)); | |
1107 | } | |
1108 | arm_resp->buffer_length = | |
1109 | (rcode == RCODE_COMPLETE) ? length : 0; | |
1110 | arm_resp->response_code = rcode; | |
1111 | arm_req->buffer_length = 0; | |
1112 | arm_req->generation = req->req.generation; | |
1113 | arm_req->extended_transaction_code = 0; | |
1114 | arm_req->destination_offset = addr; | |
1115 | arm_req->source_nodeid = nodeid; | |
1116 | arm_req->destination_nodeid = host->node_id; | |
1117 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1118 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1119 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1120 | sizeof(struct | |
1121 | arm_request_response)); | |
1122 | arm_req_resp->response = | |
1123 | int2ptr((arm_addr->recvb) + | |
1124 | sizeof(struct arm_request_response) + | |
1125 | sizeof(struct arm_request)); | |
1126 | queue_complete_req(req); | |
1127 | } | |
4a9949d7 | 1128 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1129 | return (rcode); |
1130 | } | |
1131 | ||
1132 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, | |
1133 | quadlet_t * data, u64 addr, size_t length, u16 flags) | |
1134 | { | |
4a9949d7 | 1135 | unsigned long irqflags; |
1da177e4 LT |
1136 | struct pending_request *req; |
1137 | struct host_info *hi; | |
1138 | struct file_info *fi = NULL; | |
1139 | struct list_head *entry; | |
1140 | struct arm_addr *arm_addr = NULL; | |
1141 | struct arm_request *arm_req = NULL; | |
1142 | struct arm_response *arm_resp = NULL; | |
1143 | int found = 0, size = 0, rcode = -1, length_conflict = 0; | |
1144 | struct arm_request_response *arm_req_resp = NULL; | |
1145 | ||
1146 | DBGMSG("arm_write called by node: %X" | |
1147 | "addr: %4.4x %8.8x length: %Zu", nodeid, | |
1148 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), | |
1149 | length); | |
4a9949d7 | 1150 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1151 | hi = find_host_info(host); /* search address-entry */ |
1152 | if (hi != NULL) { | |
1153 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1154 | entry = fi->addr_list.next; | |
1155 | while (entry != &(fi->addr_list)) { | |
1156 | arm_addr = | |
1157 | list_entry(entry, struct arm_addr, | |
1158 | addr_list); | |
1159 | if (((arm_addr->start) <= (addr)) | |
1160 | && ((arm_addr->end) >= (addr + length))) { | |
1161 | found = 1; | |
1162 | break; | |
1163 | } | |
1164 | entry = entry->next; | |
1165 | } | |
1166 | if (found) { | |
1167 | break; | |
1168 | } | |
1169 | } | |
1170 | } | |
1171 | rcode = -1; | |
1172 | if (!found) { | |
1173 | printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found" | |
1174 | " -> rcode_address_error\n"); | |
4a9949d7 | 1175 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1176 | return (RCODE_ADDRESS_ERROR); |
1177 | } else { | |
1178 | DBGMSG("arm_write addr_entry FOUND"); | |
1179 | } | |
1180 | if (arm_addr->rec_length < length) { | |
1181 | DBGMSG("arm_write blocklength too big -> rcode_data_error"); | |
1182 | length_conflict = 1; | |
1183 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ | |
1184 | } | |
1185 | if (rcode == -1) { | |
1186 | if (arm_addr->access_rights & ARM_WRITE) { | |
1187 | if (!(arm_addr->client_transactions & ARM_WRITE)) { | |
1188 | memcpy((arm_addr->addr_space_buffer) + | |
1189 | (addr - (arm_addr->start)), data, | |
1190 | length); | |
1191 | DBGMSG("arm_write -> (rcode_complete)"); | |
1192 | rcode = RCODE_COMPLETE; | |
1193 | } | |
1194 | } else { | |
1195 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1196 | DBGMSG("arm_write -> rcode_type_error (access denied)"); | |
1197 | } | |
1198 | } | |
1199 | if (arm_addr->notification_options & ARM_WRITE) { | |
1200 | DBGMSG("arm_write -> entering notification-section"); | |
54e6ecb2 | 1201 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
1202 | if (!req) { |
1203 | DBGMSG("arm_write -> rcode_conflict_error"); | |
4a9949d7 | 1204 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1205 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1206 | The request my be retried */ | |
1207 | } | |
1208 | size = | |
1209 | sizeof(struct arm_request) + sizeof(struct arm_response) + | |
1210 | (length) * sizeof(byte_t) + | |
1211 | sizeof(struct arm_request_response); | |
54e6ecb2 | 1212 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1213 | if (!(req->data)) { |
1214 | free_pending_request(req); | |
1215 | DBGMSG("arm_write -> rcode_conflict_error"); | |
4a9949d7 | 1216 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1217 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1218 | The request may be retried */ | |
1219 | } | |
1220 | req->free_data = 1; | |
1221 | req->file_info = fi; | |
1222 | req->req.type = RAW1394_REQ_ARM; | |
1223 | req->req.generation = get_hpsb_generation(host); | |
1224 | req->req.misc = | |
1225 | (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF)); | |
1226 | req->req.tag = arm_addr->arm_tag; | |
1227 | req->req.recvb = arm_addr->recvb; | |
1228 | req->req.length = size; | |
1229 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1230 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1231 | (sizeof | |
1232 | (struct | |
1233 | arm_request_response))); | |
1234 | arm_resp = | |
1235 | (struct arm_response *)((byte_t *) (arm_req) + | |
1236 | (sizeof(struct arm_request))); | |
1237 | arm_resp->buffer = NULL; | |
1238 | memcpy((byte_t *) arm_resp + sizeof(struct arm_response), | |
1239 | data, length); | |
1240 | arm_req->buffer = int2ptr((arm_addr->recvb) + | |
1241 | sizeof(struct arm_request_response) + | |
1242 | sizeof(struct arm_request) + | |
1243 | sizeof(struct arm_response)); | |
1244 | arm_req->buffer_length = length; | |
1245 | arm_req->generation = req->req.generation; | |
1246 | arm_req->extended_transaction_code = 0; | |
1247 | arm_req->destination_offset = addr; | |
1248 | arm_req->source_nodeid = nodeid; | |
1249 | arm_req->destination_nodeid = destid; | |
1250 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1251 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1252 | arm_resp->buffer_length = 0; | |
1253 | arm_resp->response_code = rcode; | |
1254 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1255 | sizeof(struct | |
1256 | arm_request_response)); | |
1257 | arm_req_resp->response = | |
1258 | int2ptr((arm_addr->recvb) + | |
1259 | sizeof(struct arm_request_response) + | |
1260 | sizeof(struct arm_request)); | |
1261 | queue_complete_req(req); | |
1262 | } | |
4a9949d7 | 1263 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1264 | return (rcode); |
1265 | } | |
1266 | ||
1267 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, | |
1268 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, | |
1269 | u16 flags) | |
1270 | { | |
4a9949d7 | 1271 | unsigned long irqflags; |
1da177e4 LT |
1272 | struct pending_request *req; |
1273 | struct host_info *hi; | |
1274 | struct file_info *fi = NULL; | |
1275 | struct list_head *entry; | |
1276 | struct arm_addr *arm_addr = NULL; | |
1277 | struct arm_request *arm_req = NULL; | |
1278 | struct arm_response *arm_resp = NULL; | |
1279 | int found = 0, size = 0, rcode = -1; | |
1280 | quadlet_t old, new; | |
1281 | struct arm_request_response *arm_req_resp = NULL; | |
1282 | ||
1283 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || | |
1284 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { | |
1285 | DBGMSG("arm_lock called by node: %X " | |
1286 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X", | |
1287 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1288 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, | |
1289 | be32_to_cpu(data)); | |
1290 | } else { | |
1291 | DBGMSG("arm_lock called by node: %X " | |
1292 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X", | |
1293 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1294 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, | |
1295 | be32_to_cpu(data), be32_to_cpu(arg)); | |
1296 | } | |
4a9949d7 | 1297 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1298 | hi = find_host_info(host); /* search address-entry */ |
1299 | if (hi != NULL) { | |
1300 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1301 | entry = fi->addr_list.next; | |
1302 | while (entry != &(fi->addr_list)) { | |
1303 | arm_addr = | |
1304 | list_entry(entry, struct arm_addr, | |
1305 | addr_list); | |
1306 | if (((arm_addr->start) <= (addr)) | |
1307 | && ((arm_addr->end) >= | |
1308 | (addr + sizeof(*store)))) { | |
1309 | found = 1; | |
1310 | break; | |
1311 | } | |
1312 | entry = entry->next; | |
1313 | } | |
1314 | if (found) { | |
1315 | break; | |
1316 | } | |
1317 | } | |
1318 | } | |
1319 | rcode = -1; | |
1320 | if (!found) { | |
1321 | printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found" | |
1322 | " -> rcode_address_error\n"); | |
4a9949d7 | 1323 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1324 | return (RCODE_ADDRESS_ERROR); |
1325 | } else { | |
1326 | DBGMSG("arm_lock addr_entry FOUND"); | |
1327 | } | |
1328 | if (rcode == -1) { | |
1329 | if (arm_addr->access_rights & ARM_LOCK) { | |
1330 | if (!(arm_addr->client_transactions & ARM_LOCK)) { | |
1331 | memcpy(&old, | |
1332 | (arm_addr->addr_space_buffer) + (addr - | |
1333 | (arm_addr-> | |
1334 | start)), | |
1335 | sizeof(old)); | |
1336 | switch (ext_tcode) { | |
1337 | case (EXTCODE_MASK_SWAP): | |
1338 | new = data | (old & ~arg); | |
1339 | break; | |
1340 | case (EXTCODE_COMPARE_SWAP): | |
1341 | if (old == arg) { | |
1342 | new = data; | |
1343 | } else { | |
1344 | new = old; | |
1345 | } | |
1346 | break; | |
1347 | case (EXTCODE_FETCH_ADD): | |
1348 | new = | |
1349 | cpu_to_be32(be32_to_cpu(data) + | |
1350 | be32_to_cpu(old)); | |
1351 | break; | |
1352 | case (EXTCODE_LITTLE_ADD): | |
1353 | new = | |
1354 | cpu_to_le32(le32_to_cpu(data) + | |
1355 | le32_to_cpu(old)); | |
1356 | break; | |
1357 | case (EXTCODE_BOUNDED_ADD): | |
1358 | if (old != arg) { | |
1359 | new = | |
1360 | cpu_to_be32(be32_to_cpu | |
1361 | (data) + | |
1362 | be32_to_cpu | |
1363 | (old)); | |
1364 | } else { | |
1365 | new = old; | |
1366 | } | |
1367 | break; | |
1368 | case (EXTCODE_WRAP_ADD): | |
1369 | if (old != arg) { | |
1370 | new = | |
1371 | cpu_to_be32(be32_to_cpu | |
1372 | (data) + | |
1373 | be32_to_cpu | |
1374 | (old)); | |
1375 | } else { | |
1376 | new = data; | |
1377 | } | |
1378 | break; | |
1379 | default: | |
1380 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1381 | printk(KERN_ERR | |
1382 | "raw1394: arm_lock FAILED " | |
1383 | "ext_tcode not allowed -> rcode_type_error\n"); | |
1384 | break; | |
1385 | } /*switch */ | |
1386 | if (rcode == -1) { | |
1387 | DBGMSG("arm_lock -> (rcode_complete)"); | |
1388 | rcode = RCODE_COMPLETE; | |
1389 | memcpy(store, &old, sizeof(*store)); | |
1390 | memcpy((arm_addr->addr_space_buffer) + | |
1391 | (addr - (arm_addr->start)), | |
1392 | &new, sizeof(*store)); | |
1393 | } | |
1394 | } | |
1395 | } else { | |
1396 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1397 | DBGMSG("arm_lock -> rcode_type_error (access denied)"); | |
1398 | } | |
1399 | } | |
1400 | if (arm_addr->notification_options & ARM_LOCK) { | |
1401 | byte_t *buf1, *buf2; | |
1402 | DBGMSG("arm_lock -> entering notification-section"); | |
54e6ecb2 | 1403 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
1404 | if (!req) { |
1405 | DBGMSG("arm_lock -> rcode_conflict_error"); | |
4a9949d7 | 1406 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1407 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1408 | The request may be retried */ | |
1409 | } | |
1410 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ | |
54e6ecb2 | 1411 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1412 | if (!(req->data)) { |
1413 | free_pending_request(req); | |
1414 | DBGMSG("arm_lock -> rcode_conflict_error"); | |
4a9949d7 | 1415 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1416 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1417 | The request may be retried */ | |
1418 | } | |
1419 | req->free_data = 1; | |
1420 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1421 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1422 | (sizeof | |
1423 | (struct | |
1424 | arm_request_response))); | |
1425 | arm_resp = | |
1426 | (struct arm_response *)((byte_t *) (arm_req) + | |
1427 | (sizeof(struct arm_request))); | |
1428 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); | |
1429 | buf2 = buf1 + 2 * sizeof(*store); | |
1430 | if ((ext_tcode == EXTCODE_FETCH_ADD) || | |
1431 | (ext_tcode == EXTCODE_LITTLE_ADD)) { | |
1432 | arm_req->buffer_length = sizeof(*store); | |
1433 | memcpy(buf1, &data, sizeof(*store)); | |
1434 | ||
1435 | } else { | |
1436 | arm_req->buffer_length = 2 * sizeof(*store); | |
1437 | memcpy(buf1, &arg, sizeof(*store)); | |
1438 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); | |
1439 | } | |
1440 | if (rcode == RCODE_COMPLETE) { | |
1441 | arm_resp->buffer_length = sizeof(*store); | |
1442 | memcpy(buf2, &old, sizeof(*store)); | |
1443 | } else { | |
1444 | arm_resp->buffer_length = 0; | |
1445 | } | |
1446 | req->file_info = fi; | |
1447 | req->req.type = RAW1394_REQ_ARM; | |
1448 | req->req.generation = get_hpsb_generation(host); | |
1449 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | | |
1450 | (ARM_LOCK & 0xFF)); | |
1451 | req->req.tag = arm_addr->arm_tag; | |
1452 | req->req.recvb = arm_addr->recvb; | |
1453 | req->req.length = size; | |
1454 | arm_req->generation = req->req.generation; | |
1455 | arm_req->extended_transaction_code = ext_tcode; | |
1456 | arm_req->destination_offset = addr; | |
1457 | arm_req->source_nodeid = nodeid; | |
1458 | arm_req->destination_nodeid = host->node_id; | |
1459 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1460 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1461 | arm_resp->response_code = rcode; | |
1462 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1463 | sizeof(struct | |
1464 | arm_request_response)); | |
1465 | arm_req_resp->response = | |
1466 | int2ptr((arm_addr->recvb) + | |
1467 | sizeof(struct arm_request_response) + | |
1468 | sizeof(struct arm_request)); | |
1469 | arm_req->buffer = | |
1470 | int2ptr((arm_addr->recvb) + | |
1471 | sizeof(struct arm_request_response) + | |
1472 | sizeof(struct arm_request) + | |
1473 | sizeof(struct arm_response)); | |
1474 | arm_resp->buffer = | |
1475 | int2ptr((arm_addr->recvb) + | |
1476 | sizeof(struct arm_request_response) + | |
1477 | sizeof(struct arm_request) + | |
1478 | sizeof(struct arm_response) + 2 * sizeof(*store)); | |
1479 | queue_complete_req(req); | |
1480 | } | |
4a9949d7 | 1481 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1482 | return (rcode); |
1483 | } | |
1484 | ||
1485 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, | |
1486 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, | |
1487 | u16 flags) | |
1488 | { | |
4a9949d7 | 1489 | unsigned long irqflags; |
1da177e4 LT |
1490 | struct pending_request *req; |
1491 | struct host_info *hi; | |
1492 | struct file_info *fi = NULL; | |
1493 | struct list_head *entry; | |
1494 | struct arm_addr *arm_addr = NULL; | |
1495 | struct arm_request *arm_req = NULL; | |
1496 | struct arm_response *arm_resp = NULL; | |
1497 | int found = 0, size = 0, rcode = -1; | |
1498 | octlet_t old, new; | |
1499 | struct arm_request_response *arm_req_resp = NULL; | |
1500 | ||
1501 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || | |
1502 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { | |
1503 | DBGMSG("arm_lock64 called by node: %X " | |
1504 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ", | |
1505 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1506 | (u32) (addr & 0xFFFFFFFF), | |
1507 | ext_tcode & 0xFF, | |
1508 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), | |
1509 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF)); | |
1510 | } else { | |
1511 | DBGMSG("arm_lock64 called by node: %X " | |
1512 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: " | |
1513 | "%8.8X %8.8X ", | |
1514 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1515 | (u32) (addr & 0xFFFFFFFF), | |
1516 | ext_tcode & 0xFF, | |
1517 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), | |
1518 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF), | |
1519 | (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF), | |
1520 | (u32) (be64_to_cpu(arg) & 0xFFFFFFFF)); | |
1521 | } | |
4a9949d7 | 1522 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1523 | hi = find_host_info(host); /* search addressentry in file_info's for host */ |
1524 | if (hi != NULL) { | |
1525 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1526 | entry = fi->addr_list.next; | |
1527 | while (entry != &(fi->addr_list)) { | |
1528 | arm_addr = | |
1529 | list_entry(entry, struct arm_addr, | |
1530 | addr_list); | |
1531 | if (((arm_addr->start) <= (addr)) | |
1532 | && ((arm_addr->end) >= | |
1533 | (addr + sizeof(*store)))) { | |
1534 | found = 1; | |
1535 | break; | |
1536 | } | |
1537 | entry = entry->next; | |
1538 | } | |
1539 | if (found) { | |
1540 | break; | |
1541 | } | |
1542 | } | |
1543 | } | |
1544 | rcode = -1; | |
1545 | if (!found) { | |
1546 | printk(KERN_ERR | |
1547 | "raw1394: arm_lock64 FAILED addr_entry not found" | |
1548 | " -> rcode_address_error\n"); | |
4a9949d7 | 1549 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1550 | return (RCODE_ADDRESS_ERROR); |
1551 | } else { | |
1552 | DBGMSG("arm_lock64 addr_entry FOUND"); | |
1553 | } | |
1554 | if (rcode == -1) { | |
1555 | if (arm_addr->access_rights & ARM_LOCK) { | |
1556 | if (!(arm_addr->client_transactions & ARM_LOCK)) { | |
1557 | memcpy(&old, | |
1558 | (arm_addr->addr_space_buffer) + (addr - | |
1559 | (arm_addr-> | |
1560 | start)), | |
1561 | sizeof(old)); | |
1562 | switch (ext_tcode) { | |
1563 | case (EXTCODE_MASK_SWAP): | |
1564 | new = data | (old & ~arg); | |
1565 | break; | |
1566 | case (EXTCODE_COMPARE_SWAP): | |
1567 | if (old == arg) { | |
1568 | new = data; | |
1569 | } else { | |
1570 | new = old; | |
1571 | } | |
1572 | break; | |
1573 | case (EXTCODE_FETCH_ADD): | |
1574 | new = | |
1575 | cpu_to_be64(be64_to_cpu(data) + | |
1576 | be64_to_cpu(old)); | |
1577 | break; | |
1578 | case (EXTCODE_LITTLE_ADD): | |
1579 | new = | |
1580 | cpu_to_le64(le64_to_cpu(data) + | |
1581 | le64_to_cpu(old)); | |
1582 | break; | |
1583 | case (EXTCODE_BOUNDED_ADD): | |
1584 | if (old != arg) { | |
1585 | new = | |
1586 | cpu_to_be64(be64_to_cpu | |
1587 | (data) + | |
1588 | be64_to_cpu | |
1589 | (old)); | |
1590 | } else { | |
1591 | new = old; | |
1592 | } | |
1593 | break; | |
1594 | case (EXTCODE_WRAP_ADD): | |
1595 | if (old != arg) { | |
1596 | new = | |
1597 | cpu_to_be64(be64_to_cpu | |
1598 | (data) + | |
1599 | be64_to_cpu | |
1600 | (old)); | |
1601 | } else { | |
1602 | new = data; | |
1603 | } | |
1604 | break; | |
1605 | default: | |
1606 | printk(KERN_ERR | |
1607 | "raw1394: arm_lock64 FAILED " | |
1608 | "ext_tcode not allowed -> rcode_type_error\n"); | |
1609 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1610 | break; | |
1611 | } /*switch */ | |
1612 | if (rcode == -1) { | |
1613 | DBGMSG | |
1614 | ("arm_lock64 -> (rcode_complete)"); | |
1615 | rcode = RCODE_COMPLETE; | |
1616 | memcpy(store, &old, sizeof(*store)); | |
1617 | memcpy((arm_addr->addr_space_buffer) + | |
1618 | (addr - (arm_addr->start)), | |
1619 | &new, sizeof(*store)); | |
1620 | } | |
1621 | } | |
1622 | } else { | |
1623 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1624 | DBGMSG | |
1625 | ("arm_lock64 -> rcode_type_error (access denied)"); | |
1626 | } | |
1627 | } | |
1628 | if (arm_addr->notification_options & ARM_LOCK) { | |
1629 | byte_t *buf1, *buf2; | |
1630 | DBGMSG("arm_lock64 -> entering notification-section"); | |
54e6ecb2 | 1631 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 | 1632 | if (!req) { |
4a9949d7 | 1633 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1634 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
1635 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. | |
1636 | The request may be retried */ | |
1637 | } | |
1638 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ | |
54e6ecb2 | 1639 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1640 | if (!(req->data)) { |
1641 | free_pending_request(req); | |
4a9949d7 | 1642 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1643 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
1644 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. | |
1645 | The request may be retried */ | |
1646 | } | |
1647 | req->free_data = 1; | |
1648 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1649 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1650 | (sizeof | |
1651 | (struct | |
1652 | arm_request_response))); | |
1653 | arm_resp = | |
1654 | (struct arm_response *)((byte_t *) (arm_req) + | |
1655 | (sizeof(struct arm_request))); | |
1656 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); | |
1657 | buf2 = buf1 + 2 * sizeof(*store); | |
1658 | if ((ext_tcode == EXTCODE_FETCH_ADD) || | |
1659 | (ext_tcode == EXTCODE_LITTLE_ADD)) { | |
1660 | arm_req->buffer_length = sizeof(*store); | |
1661 | memcpy(buf1, &data, sizeof(*store)); | |
1662 | ||
1663 | } else { | |
1664 | arm_req->buffer_length = 2 * sizeof(*store); | |
1665 | memcpy(buf1, &arg, sizeof(*store)); | |
1666 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); | |
1667 | } | |
1668 | if (rcode == RCODE_COMPLETE) { | |
1669 | arm_resp->buffer_length = sizeof(*store); | |
1670 | memcpy(buf2, &old, sizeof(*store)); | |
1671 | } else { | |
1672 | arm_resp->buffer_length = 0; | |
1673 | } | |
1674 | req->file_info = fi; | |
1675 | req->req.type = RAW1394_REQ_ARM; | |
1676 | req->req.generation = get_hpsb_generation(host); | |
1677 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | | |
1678 | (ARM_LOCK & 0xFF)); | |
1679 | req->req.tag = arm_addr->arm_tag; | |
1680 | req->req.recvb = arm_addr->recvb; | |
1681 | req->req.length = size; | |
1682 | arm_req->generation = req->req.generation; | |
1683 | arm_req->extended_transaction_code = ext_tcode; | |
1684 | arm_req->destination_offset = addr; | |
1685 | arm_req->source_nodeid = nodeid; | |
1686 | arm_req->destination_nodeid = host->node_id; | |
1687 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1688 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1689 | arm_resp->response_code = rcode; | |
1690 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1691 | sizeof(struct | |
1692 | arm_request_response)); | |
1693 | arm_req_resp->response = | |
1694 | int2ptr((arm_addr->recvb) + | |
1695 | sizeof(struct arm_request_response) + | |
1696 | sizeof(struct arm_request)); | |
1697 | arm_req->buffer = | |
1698 | int2ptr((arm_addr->recvb) + | |
1699 | sizeof(struct arm_request_response) + | |
1700 | sizeof(struct arm_request) + | |
1701 | sizeof(struct arm_response)); | |
1702 | arm_resp->buffer = | |
1703 | int2ptr((arm_addr->recvb) + | |
1704 | sizeof(struct arm_request_response) + | |
1705 | sizeof(struct arm_request) + | |
1706 | sizeof(struct arm_response) + 2 * sizeof(*store)); | |
1707 | queue_complete_req(req); | |
1708 | } | |
4a9949d7 | 1709 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1710 | return (rcode); |
1711 | } | |
1712 | ||
1713 | static int arm_register(struct file_info *fi, struct pending_request *req) | |
1714 | { | |
1715 | int retval; | |
1716 | struct arm_addr *addr; | |
1717 | struct host_info *hi; | |
1718 | struct file_info *fi_hlp = NULL; | |
1719 | struct list_head *entry; | |
1720 | struct arm_addr *arm_addr = NULL; | |
1721 | int same_host, another_host; | |
1722 | unsigned long flags; | |
1723 | ||
1724 | DBGMSG("arm_register called " | |
1725 | "addr(Offset): %8.8x %8.8x length: %u " | |
1726 | "rights: %2.2X notify: %2.2X " | |
1727 | "max_blk_len: %4.4X", | |
1728 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1729 | (u32) (req->req.address & 0xFFFFFFFF), | |
1730 | req->req.length, ((req->req.misc >> 8) & 0xFF), | |
1731 | (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF)); | |
1732 | /* check addressrange */ | |
1733 | if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) || | |
1734 | (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) != | |
1735 | 0)) { | |
1736 | req->req.length = 0; | |
1737 | return (-EINVAL); | |
1738 | } | |
1739 | /* addr-list-entry for fileinfo */ | |
8551158a | 1740 | addr = kmalloc(sizeof(*addr), SLAB_KERNEL); |
1da177e4 LT |
1741 | if (!addr) { |
1742 | req->req.length = 0; | |
1743 | return (-ENOMEM); | |
1744 | } | |
1745 | /* allocation of addr_space_buffer */ | |
8551158a | 1746 | addr->addr_space_buffer = vmalloc(req->req.length); |
1da177e4 LT |
1747 | if (!(addr->addr_space_buffer)) { |
1748 | kfree(addr); | |
1749 | req->req.length = 0; | |
1750 | return (-ENOMEM); | |
1751 | } | |
1752 | /* initialization of addr_space_buffer */ | |
1753 | if ((req->req.sendb) == (unsigned long)NULL) { | |
1754 | /* init: set 0 */ | |
1755 | memset(addr->addr_space_buffer, 0, req->req.length); | |
1756 | } else { | |
1757 | /* init: user -> kernel */ | |
1758 | if (copy_from_user | |
1759 | (addr->addr_space_buffer, int2ptr(req->req.sendb), | |
1760 | req->req.length)) { | |
1761 | vfree(addr->addr_space_buffer); | |
1762 | kfree(addr); | |
1763 | return (-EFAULT); | |
1764 | } | |
1765 | } | |
1766 | INIT_LIST_HEAD(&addr->addr_list); | |
1767 | addr->arm_tag = req->req.tag; | |
1768 | addr->start = req->req.address; | |
1769 | addr->end = req->req.address + req->req.length; | |
1770 | addr->access_rights = (u8) (req->req.misc & 0x0F); | |
1771 | addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F); | |
1772 | addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F); | |
1773 | addr->access_rights |= addr->client_transactions; | |
1774 | addr->notification_options |= addr->client_transactions; | |
1775 | addr->recvb = req->req.recvb; | |
1776 | addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF); | |
3253b669 | 1777 | |
1da177e4 LT |
1778 | spin_lock_irqsave(&host_info_lock, flags); |
1779 | hi = find_host_info(fi->host); | |
1780 | same_host = 0; | |
1781 | another_host = 0; | |
1782 | /* same host with address-entry containing same addressrange ? */ | |
1783 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1784 | entry = fi_hlp->addr_list.next; | |
1785 | while (entry != &(fi_hlp->addr_list)) { | |
1786 | arm_addr = | |
1787 | list_entry(entry, struct arm_addr, addr_list); | |
1788 | if ((arm_addr->start == addr->start) | |
1789 | && (arm_addr->end == addr->end)) { | |
1790 | DBGMSG("same host ownes same " | |
1791 | "addressrange -> EALREADY"); | |
1792 | same_host = 1; | |
1793 | break; | |
1794 | } | |
1795 | entry = entry->next; | |
1796 | } | |
1797 | if (same_host) { | |
1798 | break; | |
1799 | } | |
1800 | } | |
1801 | if (same_host) { | |
1802 | /* addressrange occupied by same host */ | |
3253b669 | 1803 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1804 | vfree(addr->addr_space_buffer); |
1805 | kfree(addr); | |
1da177e4 LT |
1806 | return (-EALREADY); |
1807 | } | |
1808 | /* another host with valid address-entry containing same addressrange */ | |
1809 | list_for_each_entry(hi, &host_info_list, list) { | |
1810 | if (hi->host != fi->host) { | |
1811 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1812 | entry = fi_hlp->addr_list.next; | |
1813 | while (entry != &(fi_hlp->addr_list)) { | |
1814 | arm_addr = | |
1815 | list_entry(entry, struct arm_addr, | |
1816 | addr_list); | |
1817 | if ((arm_addr->start == addr->start) | |
1818 | && (arm_addr->end == addr->end)) { | |
1819 | DBGMSG | |
1820 | ("another host ownes same " | |
1821 | "addressrange"); | |
1822 | another_host = 1; | |
1823 | break; | |
1824 | } | |
1825 | entry = entry->next; | |
1826 | } | |
1827 | if (another_host) { | |
1828 | break; | |
1829 | } | |
1830 | } | |
1831 | } | |
1832 | } | |
3253b669 SR |
1833 | spin_unlock_irqrestore(&host_info_lock, flags); |
1834 | ||
1da177e4 LT |
1835 | if (another_host) { |
1836 | DBGMSG("another hosts entry is valid -> SUCCESS"); | |
1837 | if (copy_to_user(int2ptr(req->req.recvb), | |
1838 | &addr->start, sizeof(u64))) { | |
1839 | printk(KERN_ERR "raw1394: arm_register failed " | |
1840 | " address-range-entry is invalid -> EFAULT !!!\n"); | |
1841 | vfree(addr->addr_space_buffer); | |
1842 | kfree(addr); | |
1da177e4 LT |
1843 | return (-EFAULT); |
1844 | } | |
1845 | free_pending_request(req); /* immediate success or fail */ | |
1846 | /* INSERT ENTRY */ | |
3253b669 | 1847 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 LT |
1848 | list_add_tail(&addr->addr_list, &fi->addr_list); |
1849 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1850 | return sizeof(struct raw1394_request); | |
1851 | } | |
1852 | retval = | |
1853 | hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops, | |
1854 | req->req.address, | |
1855 | req->req.address + req->req.length); | |
1856 | if (retval) { | |
1857 | /* INSERT ENTRY */ | |
3253b669 | 1858 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 1859 | list_add_tail(&addr->addr_list, &fi->addr_list); |
3253b669 | 1860 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1861 | } else { |
1862 | DBGMSG("arm_register failed errno: %d \n", retval); | |
1863 | vfree(addr->addr_space_buffer); | |
1864 | kfree(addr); | |
1da177e4 LT |
1865 | return (-EALREADY); |
1866 | } | |
1da177e4 LT |
1867 | free_pending_request(req); /* immediate success or fail */ |
1868 | return sizeof(struct raw1394_request); | |
1869 | } | |
1870 | ||
1871 | static int arm_unregister(struct file_info *fi, struct pending_request *req) | |
1872 | { | |
1873 | int found = 0; | |
1874 | int retval = 0; | |
1875 | struct list_head *entry; | |
1876 | struct arm_addr *addr = NULL; | |
1877 | struct host_info *hi; | |
1878 | struct file_info *fi_hlp = NULL; | |
1879 | struct arm_addr *arm_addr = NULL; | |
1880 | int another_host; | |
1881 | unsigned long flags; | |
1882 | ||
1883 | DBGMSG("arm_Unregister called addr(Offset): " | |
1884 | "%8.8x %8.8x", | |
1885 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1886 | (u32) (req->req.address & 0xFFFFFFFF)); | |
1887 | spin_lock_irqsave(&host_info_lock, flags); | |
1888 | /* get addr */ | |
1889 | entry = fi->addr_list.next; | |
1890 | while (entry != &(fi->addr_list)) { | |
1891 | addr = list_entry(entry, struct arm_addr, addr_list); | |
1892 | if (addr->start == req->req.address) { | |
1893 | found = 1; | |
1894 | break; | |
1895 | } | |
1896 | entry = entry->next; | |
1897 | } | |
1898 | if (!found) { | |
1899 | DBGMSG("arm_Unregister addr not found"); | |
1900 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1901 | return (-EINVAL); | |
1902 | } | |
1903 | DBGMSG("arm_Unregister addr found"); | |
1904 | another_host = 0; | |
1905 | /* another host with valid address-entry containing | |
1906 | same addressrange */ | |
1907 | list_for_each_entry(hi, &host_info_list, list) { | |
1908 | if (hi->host != fi->host) { | |
1909 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1910 | entry = fi_hlp->addr_list.next; | |
1911 | while (entry != &(fi_hlp->addr_list)) { | |
1912 | arm_addr = list_entry(entry, | |
1913 | struct arm_addr, | |
1914 | addr_list); | |
1915 | if (arm_addr->start == addr->start) { | |
1916 | DBGMSG("another host ownes " | |
1917 | "same addressrange"); | |
1918 | another_host = 1; | |
1919 | break; | |
1920 | } | |
1921 | entry = entry->next; | |
1922 | } | |
1923 | if (another_host) { | |
1924 | break; | |
1925 | } | |
1926 | } | |
1927 | } | |
1928 | } | |
1929 | if (another_host) { | |
1930 | DBGMSG("delete entry from list -> success"); | |
1931 | list_del(&addr->addr_list); | |
3253b669 | 1932 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1933 | vfree(addr->addr_space_buffer); |
1934 | kfree(addr); | |
1935 | free_pending_request(req); /* immediate success or fail */ | |
1da177e4 LT |
1936 | return sizeof(struct raw1394_request); |
1937 | } | |
1938 | retval = | |
1939 | hpsb_unregister_addrspace(&raw1394_highlevel, fi->host, | |
1940 | addr->start); | |
1941 | if (!retval) { | |
1942 | printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n"); | |
1943 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1944 | return (-EINVAL); | |
1945 | } | |
1946 | DBGMSG("delete entry from list -> success"); | |
1947 | list_del(&addr->addr_list); | |
1948 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1949 | vfree(addr->addr_space_buffer); | |
1950 | kfree(addr); | |
1951 | free_pending_request(req); /* immediate success or fail */ | |
1952 | return sizeof(struct raw1394_request); | |
1953 | } | |
1954 | ||
1955 | /* Copy data from ARM buffer(s) to user buffer. */ | |
1956 | static int arm_get_buf(struct file_info *fi, struct pending_request *req) | |
1957 | { | |
1958 | struct arm_addr *arm_addr = NULL; | |
1959 | unsigned long flags; | |
1960 | unsigned long offset; | |
1961 | ||
1962 | struct list_head *entry; | |
1963 | ||
1964 | DBGMSG("arm_get_buf " | |
1965 | "addr(Offset): %04X %08X length: %u", | |
1966 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1967 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); | |
1968 | ||
1969 | spin_lock_irqsave(&host_info_lock, flags); | |
1970 | entry = fi->addr_list.next; | |
1971 | while (entry != &(fi->addr_list)) { | |
1972 | arm_addr = list_entry(entry, struct arm_addr, addr_list); | |
1973 | if ((arm_addr->start <= req->req.address) && | |
1974 | (arm_addr->end > req->req.address)) { | |
1975 | if (req->req.address + req->req.length <= arm_addr->end) { | |
1976 | offset = req->req.address - arm_addr->start; | |
3253b669 | 1977 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1978 | |
1979 | DBGMSG | |
1980 | ("arm_get_buf copy_to_user( %08X, %p, %u )", | |
1981 | (u32) req->req.recvb, | |
1982 | arm_addr->addr_space_buffer + offset, | |
1983 | (u32) req->req.length); | |
1da177e4 LT |
1984 | if (copy_to_user |
1985 | (int2ptr(req->req.recvb), | |
1986 | arm_addr->addr_space_buffer + offset, | |
3253b669 | 1987 | req->req.length)) |
1da177e4 | 1988 | return (-EFAULT); |
1da177e4 | 1989 | |
1da177e4 LT |
1990 | /* We have to free the request, because we |
1991 | * queue no response, and therefore nobody | |
1992 | * will free it. */ | |
1993 | free_pending_request(req); | |
1994 | return sizeof(struct raw1394_request); | |
1995 | } else { | |
1996 | DBGMSG("arm_get_buf request exceeded mapping"); | |
1997 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1998 | return (-EINVAL); | |
1999 | } | |
2000 | } | |
2001 | entry = entry->next; | |
2002 | } | |
2003 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2004 | return (-EINVAL); | |
2005 | } | |
2006 | ||
2007 | /* Copy data from user buffer to ARM buffer(s). */ | |
2008 | static int arm_set_buf(struct file_info *fi, struct pending_request *req) | |
2009 | { | |
2010 | struct arm_addr *arm_addr = NULL; | |
2011 | unsigned long flags; | |
2012 | unsigned long offset; | |
2013 | ||
2014 | struct list_head *entry; | |
2015 | ||
2016 | DBGMSG("arm_set_buf " | |
2017 | "addr(Offset): %04X %08X length: %u", | |
2018 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
2019 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); | |
2020 | ||
2021 | spin_lock_irqsave(&host_info_lock, flags); | |
2022 | entry = fi->addr_list.next; | |
2023 | while (entry != &(fi->addr_list)) { | |
2024 | arm_addr = list_entry(entry, struct arm_addr, addr_list); | |
2025 | if ((arm_addr->start <= req->req.address) && | |
2026 | (arm_addr->end > req->req.address)) { | |
2027 | if (req->req.address + req->req.length <= arm_addr->end) { | |
2028 | offset = req->req.address - arm_addr->start; | |
3253b669 | 2029 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2030 | |
2031 | DBGMSG | |
2032 | ("arm_set_buf copy_from_user( %p, %08X, %u )", | |
2033 | arm_addr->addr_space_buffer + offset, | |
2034 | (u32) req->req.sendb, | |
2035 | (u32) req->req.length); | |
1da177e4 LT |
2036 | if (copy_from_user |
2037 | (arm_addr->addr_space_buffer + offset, | |
2038 | int2ptr(req->req.sendb), | |
3253b669 | 2039 | req->req.length)) |
1da177e4 | 2040 | return (-EFAULT); |
1da177e4 | 2041 | |
3253b669 SR |
2042 | /* We have to free the request, because we |
2043 | * queue no response, and therefore nobody | |
2044 | * will free it. */ | |
2045 | free_pending_request(req); | |
1da177e4 LT |
2046 | return sizeof(struct raw1394_request); |
2047 | } else { | |
2048 | DBGMSG("arm_set_buf request exceeded mapping"); | |
2049 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2050 | return (-EINVAL); | |
2051 | } | |
2052 | } | |
2053 | entry = entry->next; | |
2054 | } | |
2055 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2056 | return (-EINVAL); | |
2057 | } | |
2058 | ||
2059 | static int reset_notification(struct file_info *fi, struct pending_request *req) | |
2060 | { | |
2061 | DBGMSG("reset_notification called - switch %s ", | |
2062 | (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON"); | |
2063 | if ((req->req.misc == RAW1394_NOTIFY_OFF) || | |
2064 | (req->req.misc == RAW1394_NOTIFY_ON)) { | |
2065 | fi->notification = (u8) req->req.misc; | |
2066 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2067 | return sizeof(struct raw1394_request); | |
2068 | } | |
2069 | /* error EINVAL (22) invalid argument */ | |
2070 | return (-EINVAL); | |
2071 | } | |
2072 | ||
2073 | static int write_phypacket(struct file_info *fi, struct pending_request *req) | |
2074 | { | |
2075 | struct hpsb_packet *packet = NULL; | |
2076 | int retval = 0; | |
2077 | quadlet_t data; | |
4a9949d7 | 2078 | unsigned long flags; |
1da177e4 LT |
2079 | |
2080 | data = be32_to_cpu((u32) req->req.sendb); | |
2081 | DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data); | |
2082 | packet = hpsb_make_phypacket(fi->host, data); | |
2083 | if (!packet) | |
2084 | return -ENOMEM; | |
2085 | req->req.length = 0; | |
2086 | req->packet = packet; | |
2087 | hpsb_set_packet_complete_task(packet, | |
2088 | (void (*)(void *))queue_complete_cb, req); | |
4a9949d7 | 2089 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 2090 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 2091 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
2092 | packet->generation = req->req.generation; |
2093 | retval = hpsb_send_packet(packet); | |
2094 | DBGMSG("write_phypacket send_packet called => retval: %d ", retval); | |
2095 | if (retval < 0) { | |
2096 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
2097 | req->req.length = 0; | |
2098 | queue_complete_req(req); | |
2099 | } | |
2100 | return sizeof(struct raw1394_request); | |
2101 | } | |
2102 | ||
2103 | static int get_config_rom(struct file_info *fi, struct pending_request *req) | |
2104 | { | |
2105 | int ret = sizeof(struct raw1394_request); | |
2106 | quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL); | |
2107 | int status; | |
2108 | ||
2109 | if (!data) | |
2110 | return -ENOMEM; | |
2111 | ||
2112 | status = | |
2113 | csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET, | |
2114 | data, req->req.length); | |
2115 | if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length)) | |
2116 | ret = -EFAULT; | |
2117 | if (copy_to_user | |
2118 | (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len, | |
2119 | sizeof(fi->host->csr.rom->cache_head->len))) | |
2120 | ret = -EFAULT; | |
2121 | if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation, | |
2122 | sizeof(fi->host->csr.generation))) | |
2123 | ret = -EFAULT; | |
2124 | if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status))) | |
2125 | ret = -EFAULT; | |
2126 | kfree(data); | |
2127 | if (ret >= 0) { | |
2128 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2129 | } | |
2130 | return ret; | |
2131 | } | |
2132 | ||
2133 | static int update_config_rom(struct file_info *fi, struct pending_request *req) | |
2134 | { | |
2135 | int ret = sizeof(struct raw1394_request); | |
2136 | quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL); | |
2137 | if (!data) | |
2138 | return -ENOMEM; | |
2139 | if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) { | |
2140 | ret = -EFAULT; | |
2141 | } else { | |
2142 | int status = hpsb_update_config_rom(fi->host, | |
2143 | data, req->req.length, | |
2144 | (unsigned char)req->req. | |
2145 | misc); | |
2146 | if (copy_to_user | |
2147 | (int2ptr(req->req.recvb), &status, sizeof(status))) | |
2148 | ret = -ENOMEM; | |
2149 | } | |
2150 | kfree(data); | |
2151 | if (ret >= 0) { | |
2152 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2153 | fi->cfgrom_upd = 1; | |
2154 | } | |
2155 | return ret; | |
2156 | } | |
2157 | ||
2158 | static int modify_config_rom(struct file_info *fi, struct pending_request *req) | |
2159 | { | |
2160 | struct csr1212_keyval *kv; | |
2161 | struct csr1212_csr_rom_cache *cache; | |
2162 | struct csr1212_dentry *dentry; | |
2163 | u32 dr; | |
2164 | int ret = 0; | |
2165 | ||
2166 | if (req->req.misc == ~0) { | |
2167 | if (req->req.length == 0) | |
2168 | return -EINVAL; | |
2169 | ||
2170 | /* Find an unused slot */ | |
2171 | for (dr = 0; | |
2172 | dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr]; | |
2173 | dr++) ; | |
2174 | ||
2175 | if (dr == RAW1394_MAX_USER_CSR_DIRS) | |
2176 | return -ENOMEM; | |
2177 | ||
2178 | fi->csr1212_dirs[dr] = | |
2179 | csr1212_new_directory(CSR1212_KV_ID_VENDOR); | |
2180 | if (!fi->csr1212_dirs[dr]) | |
2181 | return -ENOMEM; | |
2182 | } else { | |
2183 | dr = req->req.misc; | |
2184 | if (!fi->csr1212_dirs[dr]) | |
2185 | return -EINVAL; | |
2186 | ||
2187 | /* Delete old stuff */ | |
2188 | for (dentry = | |
2189 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2190 | dentry; dentry = dentry->next) { | |
2191 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2192 | root_kv, | |
2193 | dentry->kv); | |
2194 | } | |
2195 | ||
2196 | if (req->req.length == 0) { | |
2197 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2198 | fi->csr1212_dirs[dr] = NULL; | |
2199 | ||
2200 | hpsb_update_config_rom_image(fi->host); | |
2201 | free_pending_request(req); | |
2202 | return sizeof(struct raw1394_request); | |
2203 | } | |
2204 | } | |
2205 | ||
2206 | cache = csr1212_rom_cache_malloc(0, req->req.length); | |
2207 | if (!cache) { | |
2208 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2209 | fi->csr1212_dirs[dr] = NULL; | |
2210 | return -ENOMEM; | |
2211 | } | |
2212 | ||
8551158a | 2213 | cache->filled_head = kmalloc(sizeof(*cache->filled_head), GFP_KERNEL); |
1da177e4 LT |
2214 | if (!cache->filled_head) { |
2215 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2216 | fi->csr1212_dirs[dr] = NULL; | |
2217 | CSR1212_FREE(cache); | |
2218 | return -ENOMEM; | |
2219 | } | |
2220 | cache->filled_tail = cache->filled_head; | |
2221 | ||
2222 | if (copy_from_user(cache->data, int2ptr(req->req.sendb), | |
2223 | req->req.length)) { | |
2224 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2225 | fi->csr1212_dirs[dr] = NULL; | |
1da177e4 LT |
2226 | ret = -EFAULT; |
2227 | } else { | |
2228 | cache->len = req->req.length; | |
2229 | cache->filled_head->offset_start = 0; | |
2230 | cache->filled_head->offset_end = cache->size - 1; | |
2231 | ||
2232 | cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr]; | |
2233 | ||
2234 | ret = CSR1212_SUCCESS; | |
2235 | /* parse all the items */ | |
2236 | for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv; | |
2237 | kv = kv->next) { | |
2238 | ret = csr1212_parse_keyval(kv, cache); | |
2239 | } | |
2240 | ||
2241 | /* attach top level items to the root directory */ | |
2242 | for (dentry = | |
2243 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2244 | ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) { | |
2245 | ret = | |
2246 | csr1212_attach_keyval_to_directory(fi->host->csr. | |
2247 | rom->root_kv, | |
2248 | dentry->kv); | |
2249 | } | |
2250 | ||
2251 | if (ret == CSR1212_SUCCESS) { | |
2252 | ret = hpsb_update_config_rom_image(fi->host); | |
2253 | ||
2254 | if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb), | |
2255 | &dr, sizeof(dr))) { | |
2256 | ret = -ENOMEM; | |
2257 | } | |
2258 | } | |
2259 | } | |
2260 | kfree(cache->filled_head); | |
b12479dd | 2261 | CSR1212_FREE(cache); |
1da177e4 LT |
2262 | |
2263 | if (ret >= 0) { | |
2264 | /* we have to free the request, because we queue no response, | |
2265 | * and therefore nobody will free it */ | |
2266 | free_pending_request(req); | |
2267 | return sizeof(struct raw1394_request); | |
2268 | } else { | |
2269 | for (dentry = | |
2270 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2271 | dentry; dentry = dentry->next) { | |
2272 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2273 | root_kv, | |
2274 | dentry->kv); | |
2275 | } | |
2276 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2277 | fi->csr1212_dirs[dr] = NULL; | |
2278 | return ret; | |
2279 | } | |
2280 | } | |
2281 | ||
2282 | static int state_connected(struct file_info *fi, struct pending_request *req) | |
2283 | { | |
2284 | int node = req->req.address >> 48; | |
2285 | ||
2286 | req->req.error = RAW1394_ERROR_NONE; | |
2287 | ||
2288 | switch (req->req.type) { | |
2289 | ||
2290 | case RAW1394_REQ_ECHO: | |
2291 | queue_complete_req(req); | |
2292 | return sizeof(struct raw1394_request); | |
2293 | ||
2294 | case RAW1394_REQ_ISO_SEND: | |
2295 | return handle_iso_send(fi, req, node); | |
2296 | ||
2297 | case RAW1394_REQ_ARM_REGISTER: | |
2298 | return arm_register(fi, req); | |
2299 | ||
2300 | case RAW1394_REQ_ARM_UNREGISTER: | |
2301 | return arm_unregister(fi, req); | |
2302 | ||
2303 | case RAW1394_REQ_ARM_SET_BUF: | |
2304 | return arm_set_buf(fi, req); | |
2305 | ||
2306 | case RAW1394_REQ_ARM_GET_BUF: | |
2307 | return arm_get_buf(fi, req); | |
2308 | ||
2309 | case RAW1394_REQ_RESET_NOTIFY: | |
2310 | return reset_notification(fi, req); | |
2311 | ||
2312 | case RAW1394_REQ_ISO_LISTEN: | |
2313 | handle_iso_listen(fi, req); | |
2314 | return sizeof(struct raw1394_request); | |
2315 | ||
2316 | case RAW1394_REQ_FCP_LISTEN: | |
2317 | handle_fcp_listen(fi, req); | |
2318 | return sizeof(struct raw1394_request); | |
2319 | ||
2320 | case RAW1394_REQ_RESET_BUS: | |
2321 | if (req->req.misc == RAW1394_LONG_RESET) { | |
2322 | DBGMSG("busreset called (type: LONG)"); | |
2323 | hpsb_reset_bus(fi->host, LONG_RESET); | |
2324 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2325 | return sizeof(struct raw1394_request); | |
2326 | } | |
2327 | if (req->req.misc == RAW1394_SHORT_RESET) { | |
2328 | DBGMSG("busreset called (type: SHORT)"); | |
2329 | hpsb_reset_bus(fi->host, SHORT_RESET); | |
2330 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2331 | return sizeof(struct raw1394_request); | |
2332 | } | |
2333 | /* error EINVAL (22) invalid argument */ | |
2334 | return (-EINVAL); | |
2335 | case RAW1394_REQ_GET_ROM: | |
2336 | return get_config_rom(fi, req); | |
2337 | ||
2338 | case RAW1394_REQ_UPDATE_ROM: | |
2339 | return update_config_rom(fi, req); | |
2340 | ||
2341 | case RAW1394_REQ_MODIFY_ROM: | |
2342 | return modify_config_rom(fi, req); | |
2343 | } | |
2344 | ||
2345 | if (req->req.generation != get_hpsb_generation(fi->host)) { | |
2346 | req->req.error = RAW1394_ERROR_GENERATION; | |
2347 | req->req.generation = get_hpsb_generation(fi->host); | |
2348 | req->req.length = 0; | |
2349 | queue_complete_req(req); | |
2350 | return sizeof(struct raw1394_request); | |
2351 | } | |
2352 | ||
2353 | switch (req->req.type) { | |
2354 | case RAW1394_REQ_PHYPACKET: | |
2355 | return write_phypacket(fi, req); | |
2356 | case RAW1394_REQ_ASYNC_SEND: | |
2357 | return handle_async_send(fi, req); | |
2358 | } | |
2359 | ||
2360 | if (req->req.length == 0) { | |
2361 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
2362 | queue_complete_req(req); | |
2363 | return sizeof(struct raw1394_request); | |
2364 | } | |
2365 | ||
2366 | return handle_async_request(fi, req, node); | |
2367 | } | |
2368 | ||
2369 | static ssize_t raw1394_write(struct file *file, const char __user * buffer, | |
2370 | size_t count, loff_t * offset_is_ignored) | |
2371 | { | |
2372 | struct file_info *fi = (struct file_info *)file->private_data; | |
2373 | struct pending_request *req; | |
2374 | ssize_t retval = 0; | |
2375 | ||
4bc32c4d | 2376 | #ifdef CONFIG_COMPAT |
7597028a BC |
2377 | if (count == sizeof(struct compat_raw1394_req) && |
2378 | sizeof(struct compat_raw1394_req) != | |
2379 | sizeof(struct raw1394_request)) { | |
4bc32c4d AK |
2380 | buffer = raw1394_compat_write(buffer); |
2381 | if (IS_ERR(buffer)) | |
2382 | return PTR_ERR(buffer); | |
2383 | } else | |
2384 | #endif | |
1da177e4 LT |
2385 | if (count != sizeof(struct raw1394_request)) { |
2386 | return -EINVAL; | |
2387 | } | |
2388 | ||
2389 | req = alloc_pending_request(); | |
2390 | if (req == NULL) { | |
2391 | return -ENOMEM; | |
2392 | } | |
2393 | req->file_info = fi; | |
2394 | ||
2395 | if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) { | |
2396 | free_pending_request(req); | |
2397 | return -EFAULT; | |
2398 | } | |
2399 | ||
2400 | switch (fi->state) { | |
2401 | case opened: | |
2402 | retval = state_opened(fi, req); | |
2403 | break; | |
2404 | ||
2405 | case initialized: | |
2406 | retval = state_initialized(fi, req); | |
2407 | break; | |
2408 | ||
2409 | case connected: | |
2410 | retval = state_connected(fi, req); | |
2411 | break; | |
2412 | } | |
2413 | ||
2414 | if (retval < 0) { | |
2415 | free_pending_request(req); | |
2416 | } | |
2417 | ||
2418 | return retval; | |
2419 | } | |
2420 | ||
2421 | /* rawiso operations */ | |
2422 | ||
2423 | /* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the | |
2424 | * completion queue (reqlists_lock must be taken) */ | |
2425 | static inline int __rawiso_event_in_queue(struct file_info *fi) | |
2426 | { | |
2427 | struct pending_request *req; | |
2428 | ||
2429 | list_for_each_entry(req, &fi->req_complete, list) | |
2430 | if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY) | |
2431 | return 1; | |
2432 | ||
2433 | return 0; | |
2434 | } | |
2435 | ||
2436 | /* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */ | |
2437 | static void queue_rawiso_event(struct file_info *fi) | |
2438 | { | |
2439 | unsigned long flags; | |
2440 | ||
2441 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
2442 | ||
2443 | /* only one ISO activity event may be in the queue */ | |
2444 | if (!__rawiso_event_in_queue(fi)) { | |
2445 | struct pending_request *req = | |
54e6ecb2 | 2446 | __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
2447 | |
2448 | if (req) { | |
2449 | req->file_info = fi; | |
2450 | req->req.type = RAW1394_REQ_RAWISO_ACTIVITY; | |
2451 | req->req.generation = get_hpsb_generation(fi->host); | |
2452 | __queue_complete_req(req); | |
2453 | } else { | |
2454 | /* on allocation failure, signal an overflow */ | |
2455 | if (fi->iso_handle) { | |
2456 | atomic_inc(&fi->iso_handle->overflows); | |
2457 | } | |
2458 | } | |
2459 | } | |
2460 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
2461 | } | |
2462 | ||
2463 | static void rawiso_activity_cb(struct hpsb_iso *iso) | |
2464 | { | |
2465 | unsigned long flags; | |
2466 | struct host_info *hi; | |
2467 | struct file_info *fi; | |
2468 | ||
2469 | spin_lock_irqsave(&host_info_lock, flags); | |
2470 | hi = find_host_info(iso->host); | |
2471 | ||
2472 | if (hi != NULL) { | |
2473 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
2474 | if (fi->iso_handle == iso) | |
2475 | queue_rawiso_event(fi); | |
2476 | } | |
2477 | } | |
2478 | ||
2479 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2480 | } | |
2481 | ||
2482 | /* helper function - gather all the kernel iso status bits for returning to user-space */ | |
2483 | static void raw1394_iso_fill_status(struct hpsb_iso *iso, | |
2484 | struct raw1394_iso_status *stat) | |
2485 | { | |
2486 | stat->config.data_buf_size = iso->buf_size; | |
2487 | stat->config.buf_packets = iso->buf_packets; | |
2488 | stat->config.channel = iso->channel; | |
2489 | stat->config.speed = iso->speed; | |
2490 | stat->config.irq_interval = iso->irq_interval; | |
2491 | stat->n_packets = hpsb_iso_n_ready(iso); | |
2492 | stat->overflows = atomic_read(&iso->overflows); | |
2493 | stat->xmit_cycle = iso->xmit_cycle; | |
2494 | } | |
2495 | ||
2496 | static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr) | |
2497 | { | |
2498 | struct raw1394_iso_status stat; | |
2499 | ||
2500 | if (!fi->host) | |
2501 | return -EINVAL; | |
2502 | ||
2503 | if (copy_from_user(&stat, uaddr, sizeof(stat))) | |
2504 | return -EFAULT; | |
2505 | ||
2506 | fi->iso_handle = hpsb_iso_xmit_init(fi->host, | |
2507 | stat.config.data_buf_size, | |
2508 | stat.config.buf_packets, | |
2509 | stat.config.channel, | |
2510 | stat.config.speed, | |
2511 | stat.config.irq_interval, | |
2512 | rawiso_activity_cb); | |
2513 | if (!fi->iso_handle) | |
2514 | return -ENOMEM; | |
2515 | ||
2516 | fi->iso_state = RAW1394_ISO_XMIT; | |
2517 | ||
2518 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2519 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2520 | return -EFAULT; | |
2521 | ||
2522 | /* queue an event to get things started */ | |
2523 | rawiso_activity_cb(fi->iso_handle); | |
2524 | ||
2525 | return 0; | |
2526 | } | |
2527 | ||
2528 | static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr) | |
2529 | { | |
2530 | struct raw1394_iso_status stat; | |
2531 | ||
2532 | if (!fi->host) | |
2533 | return -EINVAL; | |
2534 | ||
2535 | if (copy_from_user(&stat, uaddr, sizeof(stat))) | |
2536 | return -EFAULT; | |
2537 | ||
2538 | fi->iso_handle = hpsb_iso_recv_init(fi->host, | |
2539 | stat.config.data_buf_size, | |
2540 | stat.config.buf_packets, | |
2541 | stat.config.channel, | |
2542 | stat.config.dma_mode, | |
2543 | stat.config.irq_interval, | |
2544 | rawiso_activity_cb); | |
2545 | if (!fi->iso_handle) | |
2546 | return -ENOMEM; | |
2547 | ||
2548 | fi->iso_state = RAW1394_ISO_RECV; | |
2549 | ||
2550 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2551 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2552 | return -EFAULT; | |
2553 | return 0; | |
2554 | } | |
2555 | ||
2556 | static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr) | |
2557 | { | |
2558 | struct raw1394_iso_status stat; | |
2559 | struct hpsb_iso *iso = fi->iso_handle; | |
2560 | ||
2561 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2562 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2563 | return -EFAULT; | |
2564 | ||
2565 | /* reset overflow counter */ | |
2566 | atomic_set(&iso->overflows, 0); | |
2567 | ||
2568 | return 0; | |
2569 | } | |
2570 | ||
2571 | /* copy N packet_infos out of the ringbuffer into user-supplied array */ | |
2572 | static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr) | |
2573 | { | |
2574 | struct raw1394_iso_packets upackets; | |
2575 | unsigned int packet = fi->iso_handle->first_packet; | |
2576 | int i; | |
2577 | ||
2578 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) | |
2579 | return -EFAULT; | |
2580 | ||
2581 | if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle)) | |
2582 | return -EINVAL; | |
2583 | ||
2584 | /* ensure user-supplied buffer is accessible and big enough */ | |
2585 | if (!access_ok(VERIFY_WRITE, upackets.infos, | |
c64d472a JMH |
2586 | upackets.n_packets * |
2587 | sizeof(struct raw1394_iso_packet_info))) | |
1da177e4 LT |
2588 | return -EFAULT; |
2589 | ||
2590 | /* copy the packet_infos out */ | |
2591 | for (i = 0; i < upackets.n_packets; i++) { | |
2592 | if (__copy_to_user(&upackets.infos[i], | |
2593 | &fi->iso_handle->infos[packet], | |
2594 | sizeof(struct raw1394_iso_packet_info))) | |
2595 | return -EFAULT; | |
2596 | ||
2597 | packet = (packet + 1) % fi->iso_handle->buf_packets; | |
2598 | } | |
2599 | ||
2600 | return 0; | |
2601 | } | |
2602 | ||
2603 | /* copy N packet_infos from user to ringbuffer, and queue them for transmission */ | |
2604 | static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr) | |
2605 | { | |
2606 | struct raw1394_iso_packets upackets; | |
2607 | int i, rv; | |
2608 | ||
2609 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) | |
2610 | return -EFAULT; | |
2611 | ||
1934b8b6 | 2612 | if (upackets.n_packets >= fi->iso_handle->buf_packets) |
1da177e4 LT |
2613 | return -EINVAL; |
2614 | ||
1934b8b6 BC |
2615 | if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle)) |
2616 | return -EAGAIN; | |
2617 | ||
1da177e4 LT |
2618 | /* ensure user-supplied buffer is accessible and big enough */ |
2619 | if (!access_ok(VERIFY_READ, upackets.infos, | |
c64d472a JMH |
2620 | upackets.n_packets * |
2621 | sizeof(struct raw1394_iso_packet_info))) | |
1da177e4 LT |
2622 | return -EFAULT; |
2623 | ||
2624 | /* copy the infos structs in and queue the packets */ | |
2625 | for (i = 0; i < upackets.n_packets; i++) { | |
2626 | struct raw1394_iso_packet_info info; | |
2627 | ||
2628 | if (__copy_from_user(&info, &upackets.infos[i], | |
2629 | sizeof(struct raw1394_iso_packet_info))) | |
2630 | return -EFAULT; | |
2631 | ||
2632 | rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset, | |
2633 | info.len, info.tag, info.sy); | |
2634 | if (rv) | |
2635 | return rv; | |
2636 | } | |
2637 | ||
2638 | return 0; | |
2639 | } | |
2640 | ||
2641 | static void raw1394_iso_shutdown(struct file_info *fi) | |
2642 | { | |
2643 | if (fi->iso_handle) | |
2644 | hpsb_iso_shutdown(fi->iso_handle); | |
2645 | ||
2646 | fi->iso_handle = NULL; | |
2647 | fi->iso_state = RAW1394_ISO_INACTIVE; | |
2648 | } | |
2649 | ||
2650 | /* mmap the rawiso xmit/recv buffer */ | |
2651 | static int raw1394_mmap(struct file *file, struct vm_area_struct *vma) | |
2652 | { | |
2653 | struct file_info *fi = file->private_data; | |
2654 | ||
2655 | if (fi->iso_state == RAW1394_ISO_INACTIVE) | |
2656 | return -EINVAL; | |
2657 | ||
2658 | return dma_region_mmap(&fi->iso_handle->data_buf, file, vma); | |
2659 | } | |
2660 | ||
2661 | /* ioctl is only used for rawiso operations */ | |
2662 | static int raw1394_ioctl(struct inode *inode, struct file *file, | |
2663 | unsigned int cmd, unsigned long arg) | |
2664 | { | |
2665 | struct file_info *fi = file->private_data; | |
2666 | void __user *argp = (void __user *)arg; | |
2667 | ||
2668 | switch (fi->iso_state) { | |
2669 | case RAW1394_ISO_INACTIVE: | |
2670 | switch (cmd) { | |
2671 | case RAW1394_IOC_ISO_XMIT_INIT: | |
2672 | return raw1394_iso_xmit_init(fi, argp); | |
2673 | case RAW1394_IOC_ISO_RECV_INIT: | |
2674 | return raw1394_iso_recv_init(fi, argp); | |
2675 | default: | |
2676 | break; | |
2677 | } | |
2678 | break; | |
2679 | case RAW1394_ISO_RECV: | |
2680 | switch (cmd) { | |
2681 | case RAW1394_IOC_ISO_RECV_START:{ | |
2682 | /* copy args from user-space */ | |
2683 | int args[3]; | |
2684 | if (copy_from_user | |
2685 | (&args[0], argp, sizeof(args))) | |
2686 | return -EFAULT; | |
2687 | return hpsb_iso_recv_start(fi->iso_handle, | |
2688 | args[0], args[1], | |
2689 | args[2]); | |
2690 | } | |
2691 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2692 | hpsb_iso_stop(fi->iso_handle); | |
2693 | return 0; | |
2694 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: | |
2695 | return hpsb_iso_recv_listen_channel(fi->iso_handle, | |
2696 | arg); | |
2697 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: | |
2698 | return hpsb_iso_recv_unlisten_channel(fi->iso_handle, | |
2699 | arg); | |
2700 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{ | |
2701 | /* copy the u64 from user-space */ | |
2702 | u64 mask; | |
2703 | if (copy_from_user(&mask, argp, sizeof(mask))) | |
2704 | return -EFAULT; | |
2705 | return hpsb_iso_recv_set_channel_mask(fi-> | |
2706 | iso_handle, | |
2707 | mask); | |
2708 | } | |
2709 | case RAW1394_IOC_ISO_GET_STATUS: | |
2710 | return raw1394_iso_get_status(fi, argp); | |
2711 | case RAW1394_IOC_ISO_RECV_PACKETS: | |
2712 | return raw1394_iso_recv_packets(fi, argp); | |
2713 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: | |
2714 | return hpsb_iso_recv_release_packets(fi->iso_handle, | |
2715 | arg); | |
2716 | case RAW1394_IOC_ISO_RECV_FLUSH: | |
2717 | return hpsb_iso_recv_flush(fi->iso_handle); | |
2718 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2719 | raw1394_iso_shutdown(fi); | |
2720 | return 0; | |
2721 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
2722 | queue_rawiso_event(fi); | |
2723 | return 0; | |
2724 | } | |
2725 | break; | |
2726 | case RAW1394_ISO_XMIT: | |
2727 | switch (cmd) { | |
2728 | case RAW1394_IOC_ISO_XMIT_START:{ | |
2729 | /* copy two ints from user-space */ | |
2730 | int args[2]; | |
2731 | if (copy_from_user | |
2732 | (&args[0], argp, sizeof(args))) | |
2733 | return -EFAULT; | |
2734 | return hpsb_iso_xmit_start(fi->iso_handle, | |
2735 | args[0], args[1]); | |
2736 | } | |
2737 | case RAW1394_IOC_ISO_XMIT_SYNC: | |
2738 | return hpsb_iso_xmit_sync(fi->iso_handle); | |
2739 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2740 | hpsb_iso_stop(fi->iso_handle); | |
2741 | return 0; | |
2742 | case RAW1394_IOC_ISO_GET_STATUS: | |
2743 | return raw1394_iso_get_status(fi, argp); | |
2744 | case RAW1394_IOC_ISO_XMIT_PACKETS: | |
2745 | return raw1394_iso_send_packets(fi, argp); | |
2746 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2747 | raw1394_iso_shutdown(fi); | |
2748 | return 0; | |
2749 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
2750 | queue_rawiso_event(fi); | |
2751 | return 0; | |
2752 | } | |
2753 | break; | |
2754 | default: | |
2755 | break; | |
2756 | } | |
2757 | ||
2758 | return -EINVAL; | |
2759 | } | |
2760 | ||
2761 | static unsigned int raw1394_poll(struct file *file, poll_table * pt) | |
2762 | { | |
2763 | struct file_info *fi = file->private_data; | |
2764 | unsigned int mask = POLLOUT | POLLWRNORM; | |
4a9949d7 | 2765 | unsigned long flags; |
1da177e4 | 2766 | |
45289bf6 | 2767 | poll_wait(file, &fi->wait_complete, pt); |
1da177e4 | 2768 | |
4a9949d7 | 2769 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 LT |
2770 | if (!list_empty(&fi->req_complete)) { |
2771 | mask |= POLLIN | POLLRDNORM; | |
2772 | } | |
4a9949d7 | 2773 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
2774 | |
2775 | return mask; | |
2776 | } | |
2777 | ||
2778 | static int raw1394_open(struct inode *inode, struct file *file) | |
2779 | { | |
2780 | struct file_info *fi; | |
2781 | ||
8551158a SR |
2782 | fi = kzalloc(sizeof(*fi), SLAB_KERNEL); |
2783 | if (!fi) | |
1da177e4 LT |
2784 | return -ENOMEM; |
2785 | ||
1da177e4 LT |
2786 | fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */ |
2787 | ||
2788 | INIT_LIST_HEAD(&fi->list); | |
2789 | fi->state = opened; | |
2790 | INIT_LIST_HEAD(&fi->req_pending); | |
2791 | INIT_LIST_HEAD(&fi->req_complete); | |
1da177e4 | 2792 | spin_lock_init(&fi->reqlists_lock); |
45289bf6 | 2793 | init_waitqueue_head(&fi->wait_complete); |
1da177e4 LT |
2794 | INIT_LIST_HEAD(&fi->addr_list); |
2795 | ||
2796 | file->private_data = fi; | |
2797 | ||
2798 | return 0; | |
2799 | } | |
2800 | ||
2801 | static int raw1394_release(struct inode *inode, struct file *file) | |
2802 | { | |
2803 | struct file_info *fi = file->private_data; | |
2804 | struct list_head *lh; | |
2805 | struct pending_request *req; | |
45289bf6 | 2806 | int i, fail; |
1da177e4 LT |
2807 | int retval = 0; |
2808 | struct list_head *entry; | |
2809 | struct arm_addr *addr = NULL; | |
2810 | struct host_info *hi; | |
2811 | struct file_info *fi_hlp = NULL; | |
2812 | struct arm_addr *arm_addr = NULL; | |
2813 | int another_host; | |
2814 | int csr_mod = 0; | |
4a9949d7 | 2815 | unsigned long flags; |
1da177e4 LT |
2816 | |
2817 | if (fi->iso_state != RAW1394_ISO_INACTIVE) | |
2818 | raw1394_iso_shutdown(fi); | |
2819 | ||
2820 | for (i = 0; i < 64; i++) { | |
2821 | if (fi->listen_channels & (1ULL << i)) { | |
2822 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, i); | |
2823 | } | |
2824 | } | |
2825 | ||
4a9949d7 | 2826 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 2827 | fi->listen_channels = 0; |
1da177e4 LT |
2828 | |
2829 | fail = 0; | |
2830 | /* set address-entries invalid */ | |
1da177e4 LT |
2831 | |
2832 | while (!list_empty(&fi->addr_list)) { | |
2833 | another_host = 0; | |
2834 | lh = fi->addr_list.next; | |
2835 | addr = list_entry(lh, struct arm_addr, addr_list); | |
2836 | /* another host with valid address-entry containing | |
2837 | same addressrange? */ | |
2838 | list_for_each_entry(hi, &host_info_list, list) { | |
2839 | if (hi->host != fi->host) { | |
2840 | list_for_each_entry(fi_hlp, &hi->file_info_list, | |
2841 | list) { | |
2842 | entry = fi_hlp->addr_list.next; | |
2843 | while (entry != &(fi_hlp->addr_list)) { | |
c64d472a | 2844 | arm_addr = list_entry(entry, struct |
1da177e4 LT |
2845 | arm_addr, |
2846 | addr_list); | |
2847 | if (arm_addr->start == | |
2848 | addr->start) { | |
2849 | DBGMSG | |
2850 | ("raw1394_release: " | |
2851 | "another host ownes " | |
2852 | "same addressrange"); | |
2853 | another_host = 1; | |
2854 | break; | |
2855 | } | |
2856 | entry = entry->next; | |
2857 | } | |
2858 | if (another_host) { | |
2859 | break; | |
2860 | } | |
2861 | } | |
2862 | } | |
2863 | } | |
2864 | if (!another_host) { | |
2865 | DBGMSG("raw1394_release: call hpsb_arm_unregister"); | |
2866 | retval = | |
2867 | hpsb_unregister_addrspace(&raw1394_highlevel, | |
2868 | fi->host, addr->start); | |
2869 | if (!retval) { | |
2870 | ++fail; | |
2871 | printk(KERN_ERR | |
2872 | "raw1394_release arm_Unregister failed\n"); | |
2873 | } | |
2874 | } | |
2875 | DBGMSG("raw1394_release: delete addr_entry from list"); | |
2876 | list_del(&addr->addr_list); | |
2877 | vfree(addr->addr_space_buffer); | |
2878 | kfree(addr); | |
2879 | } /* while */ | |
4a9949d7 | 2880 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2881 | if (fail > 0) { |
2882 | printk(KERN_ERR "raw1394: during addr_list-release " | |
2883 | "error(s) occurred \n"); | |
2884 | } | |
2885 | ||
45289bf6 SR |
2886 | for (;;) { |
2887 | /* This locked section guarantees that neither | |
2888 | * complete nor pending requests exist once i!=0 */ | |
4a9949d7 | 2889 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
45289bf6 | 2890 | while ((req = __next_complete_req(fi))) |
1da177e4 | 2891 | free_pending_request(req); |
1da177e4 | 2892 | |
45289bf6 | 2893 | i = list_empty(&fi->req_pending); |
4a9949d7 | 2894 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 | 2895 | |
45289bf6 SR |
2896 | if (i) |
2897 | break; | |
2898 | /* | |
2899 | * Sleep until more requests can be freed. | |
2900 | * | |
2901 | * NB: We call the macro wait_event() with a condition argument | |
2902 | * with side effect. This is only possible because the side | |
2903 | * effect does not occur until the condition became true, and | |
2904 | * wait_event() won't evaluate the condition again after that. | |
2905 | */ | |
2906 | wait_event(fi->wait_complete, (req = next_complete_req(fi))); | |
2907 | free_pending_request(req); | |
1da177e4 LT |
2908 | } |
2909 | ||
2910 | /* Remove any sub-trees left by user space programs */ | |
2911 | for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) { | |
2912 | struct csr1212_dentry *dentry; | |
2913 | if (!fi->csr1212_dirs[i]) | |
2914 | continue; | |
2915 | for (dentry = | |
2916 | fi->csr1212_dirs[i]->value.directory.dentries_head; dentry; | |
2917 | dentry = dentry->next) { | |
2918 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2919 | root_kv, | |
2920 | dentry->kv); | |
2921 | } | |
2922 | csr1212_release_keyval(fi->csr1212_dirs[i]); | |
2923 | fi->csr1212_dirs[i] = NULL; | |
2924 | csr_mod = 1; | |
2925 | } | |
2926 | ||
2927 | if ((csr_mod || fi->cfgrom_upd) | |
2928 | && hpsb_update_config_rom_image(fi->host) < 0) | |
2929 | HPSB_ERR | |
2930 | ("Failed to generate Configuration ROM image for host %d", | |
2931 | fi->host->id); | |
2932 | ||
2933 | if (fi->state == connected) { | |
4a9949d7 | 2934 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 2935 | list_del(&fi->list); |
4a9949d7 | 2936 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2937 | |
2938 | put_device(&fi->host->device); | |
2939 | } | |
2940 | ||
2941 | kfree(fi); | |
2942 | ||
2943 | return 0; | |
2944 | } | |
2945 | ||
2946 | /*** HOTPLUG STUFF **********************************************************/ | |
2947 | /* | |
2948 | * Export information about protocols/devices supported by this driver. | |
2949 | */ | |
2950 | static struct ieee1394_device_id raw1394_id_table[] = { | |
2951 | { | |
2952 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2953 | .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2954 | .version = AVC_SW_VERSION_ENTRY & 0xffffff}, | |
2955 | { | |
2956 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2957 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2958 | .version = CAMERA_SW_VERSION_ENTRY & 0xffffff}, | |
2959 | { | |
2960 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2961 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2962 | .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff}, | |
2963 | { | |
2964 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2965 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2966 | .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff}, | |
2967 | {} | |
2968 | }; | |
2969 | ||
2970 | MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table); | |
2971 | ||
2972 | static struct hpsb_protocol_driver raw1394_driver = { | |
2973 | .name = "raw1394 Driver", | |
2974 | .id_table = raw1394_id_table, | |
2975 | .driver = { | |
2976 | .name = "raw1394", | |
2977 | .bus = &ieee1394_bus_type, | |
2978 | }, | |
2979 | }; | |
2980 | ||
2981 | /******************************************************************************/ | |
2982 | ||
2983 | static struct hpsb_highlevel raw1394_highlevel = { | |
2984 | .name = RAW1394_DEVICE_NAME, | |
2985 | .add_host = add_host, | |
2986 | .remove_host = remove_host, | |
2987 | .host_reset = host_reset, | |
2988 | .iso_receive = iso_receive, | |
2989 | .fcp_request = fcp_request, | |
2990 | }; | |
2991 | ||
2992 | static struct cdev raw1394_cdev; | |
2993 | static struct file_operations raw1394_fops = { | |
2994 | .owner = THIS_MODULE, | |
2995 | .read = raw1394_read, | |
2996 | .write = raw1394_write, | |
2997 | .mmap = raw1394_mmap, | |
2998 | .ioctl = raw1394_ioctl, | |
4bc32c4d | 2999 | // .compat_ioctl = ... someone needs to do this |
1da177e4 LT |
3000 | .poll = raw1394_poll, |
3001 | .open = raw1394_open, | |
3002 | .release = raw1394_release, | |
3003 | }; | |
3004 | ||
3005 | static int __init init_raw1394(void) | |
3006 | { | |
3007 | int ret = 0; | |
3008 | ||
3009 | hpsb_register_highlevel(&raw1394_highlevel); | |
3010 | ||
c64d472a JMH |
3011 | if (IS_ERR |
3012 | (class_device_create | |
3013 | (hpsb_protocol_class, NULL, | |
3014 | MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16), NULL, | |
3015 | RAW1394_DEVICE_NAME))) { | |
1da177e4 LT |
3016 | ret = -EFAULT; |
3017 | goto out_unreg; | |
3018 | } | |
c64d472a | 3019 | |
1da177e4 LT |
3020 | cdev_init(&raw1394_cdev, &raw1394_fops); |
3021 | raw1394_cdev.owner = THIS_MODULE; | |
3022 | kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME); | |
3023 | ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1); | |
3024 | if (ret) { | |
3025 | HPSB_ERR("raw1394 failed to register minor device block"); | |
3026 | goto out_dev; | |
3027 | } | |
3028 | ||
3029 | HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME); | |
3030 | ||
3031 | ret = hpsb_register_protocol(&raw1394_driver); | |
3032 | if (ret) { | |
3033 | HPSB_ERR("raw1394: failed to register protocol"); | |
3034 | cdev_del(&raw1394_cdev); | |
3035 | goto out_dev; | |
3036 | } | |
3037 | ||
3038 | goto out; | |
3039 | ||
c64d472a | 3040 | out_dev: |
7e25ab91 | 3041 | class_device_destroy(hpsb_protocol_class, |
c64d472a JMH |
3042 | MKDEV(IEEE1394_MAJOR, |
3043 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); | |
3044 | out_unreg: | |
1da177e4 | 3045 | hpsb_unregister_highlevel(&raw1394_highlevel); |
c64d472a | 3046 | out: |
1da177e4 LT |
3047 | return ret; |
3048 | } | |
3049 | ||
3050 | static void __exit cleanup_raw1394(void) | |
3051 | { | |
7e25ab91 | 3052 | class_device_destroy(hpsb_protocol_class, |
c64d472a JMH |
3053 | MKDEV(IEEE1394_MAJOR, |
3054 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); | |
1da177e4 | 3055 | cdev_del(&raw1394_cdev); |
1da177e4 LT |
3056 | hpsb_unregister_highlevel(&raw1394_highlevel); |
3057 | hpsb_unregister_protocol(&raw1394_driver); | |
3058 | } | |
3059 | ||
3060 | module_init(init_raw1394); | |
3061 | module_exit(cleanup_raw1394); | |
3062 | MODULE_LICENSE("GPL"); |