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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> | |
1da177e4 LT |
38 | #include <linux/interrupt.h> |
39 | #include <linux/vmalloc.h> | |
40 | #include <linux/cdev.h> | |
41 | #include <asm/uaccess.h> | |
42 | #include <asm/atomic.h> | |
4bc32c4d | 43 | #include <linux/compat.h> |
1da177e4 LT |
44 | |
45 | #include "csr1212.h" | |
de4394f1 SR |
46 | #include "highlevel.h" |
47 | #include "hosts.h" | |
1da177e4 | 48 | #include "ieee1394.h" |
1da177e4 | 49 | #include "ieee1394_core.h" |
de4394f1 | 50 | #include "ieee1394_hotplug.h" |
1da177e4 | 51 | #include "ieee1394_transactions.h" |
de4394f1 SR |
52 | #include "ieee1394_types.h" |
53 | #include "iso.h" | |
54 | #include "nodemgr.h" | |
1da177e4 LT |
55 | #include "raw1394.h" |
56 | #include "raw1394-private.h" | |
57 | ||
58 | #define int2ptr(x) ((void __user *)(unsigned long)x) | |
59 | #define ptr2int(x) ((u64)(unsigned long)(void __user *)x) | |
60 | ||
61 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG | |
62 | #define RAW1394_DEBUG | |
63 | #endif | |
64 | ||
65 | #ifdef RAW1394_DEBUG | |
66 | #define DBGMSG(fmt, args...) \ | |
67 | printk(KERN_INFO "raw1394:" fmt "\n" , ## args) | |
68 | #else | |
611aa19f | 69 | #define DBGMSG(fmt, args...) do {} while (0) |
1da177e4 LT |
70 | #endif |
71 | ||
72 | static LIST_HEAD(host_info_list); | |
73 | static int host_count; | |
74 | static DEFINE_SPINLOCK(host_info_lock); | |
75 | static atomic_t internal_generation = ATOMIC_INIT(0); | |
76 | ||
77 | static atomic_t iso_buffer_size; | |
78 | static const int iso_buffer_max = 4 * 1024 * 1024; /* 4 MB */ | |
79 | ||
80 | static struct hpsb_highlevel raw1394_highlevel; | |
81 | ||
82 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, | |
83 | u64 addr, size_t length, u16 flags); | |
84 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, | |
85 | quadlet_t * data, u64 addr, size_t length, u16 flags); | |
86 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, | |
87 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, | |
88 | u16 flags); | |
89 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, | |
90 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, | |
91 | u16 flags); | |
92 | static struct hpsb_address_ops arm_ops = { | |
93 | .read = arm_read, | |
94 | .write = arm_write, | |
95 | .lock = arm_lock, | |
96 | .lock64 = arm_lock64, | |
97 | }; | |
98 | ||
99 | static void queue_complete_cb(struct pending_request *req); | |
100 | ||
9868e0ec SR |
101 | #include <asm/current.h> |
102 | static void print_old_iso_deprecation(void) | |
103 | { | |
104 | static pid_t p; | |
105 | ||
106 | if (p == current->pid) | |
107 | return; | |
108 | p = current->pid; | |
109 | printk(KERN_WARNING "raw1394: WARNING - Program \"%s\" uses unsupported" | |
110 | " isochronous request types which will be removed in a next" | |
111 | " kernel release\n", current->comm); | |
112 | printk(KERN_WARNING "raw1394: Update your software to use libraw1394's" | |
113 | " newer interface\n"); | |
114 | } | |
115 | ||
dd0fc66f | 116 | static struct pending_request *__alloc_pending_request(gfp_t flags) |
1da177e4 LT |
117 | { |
118 | struct pending_request *req; | |
119 | ||
8551158a SR |
120 | req = kzalloc(sizeof(*req), flags); |
121 | if (req) | |
1da177e4 | 122 | INIT_LIST_HEAD(&req->list); |
1da177e4 LT |
123 | |
124 | return req; | |
125 | } | |
126 | ||
127 | static inline struct pending_request *alloc_pending_request(void) | |
128 | { | |
e94b1766 | 129 | return __alloc_pending_request(GFP_KERNEL); |
1da177e4 LT |
130 | } |
131 | ||
132 | static void free_pending_request(struct pending_request *req) | |
133 | { | |
134 | if (req->ibs) { | |
135 | if (atomic_dec_and_test(&req->ibs->refcount)) { | |
136 | atomic_sub(req->ibs->data_size, &iso_buffer_size); | |
137 | kfree(req->ibs); | |
138 | } | |
139 | } else if (req->free_data) { | |
140 | kfree(req->data); | |
141 | } | |
142 | hpsb_free_packet(req->packet); | |
143 | kfree(req); | |
144 | } | |
145 | ||
146 | /* fi->reqlists_lock must be taken */ | |
147 | static void __queue_complete_req(struct pending_request *req) | |
148 | { | |
149 | struct file_info *fi = req->file_info; | |
1da177e4 | 150 | |
45289bf6 SR |
151 | list_move_tail(&req->list, &fi->req_complete); |
152 | wake_up(&fi->wait_complete); | |
1da177e4 LT |
153 | } |
154 | ||
155 | static void queue_complete_req(struct pending_request *req) | |
156 | { | |
157 | unsigned long flags; | |
158 | struct file_info *fi = req->file_info; | |
159 | ||
160 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
161 | __queue_complete_req(req); | |
162 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
163 | } | |
164 | ||
165 | static void queue_complete_cb(struct pending_request *req) | |
166 | { | |
167 | struct hpsb_packet *packet = req->packet; | |
168 | int rcode = (packet->header[1] >> 12) & 0xf; | |
169 | ||
170 | switch (packet->ack_code) { | |
171 | case ACKX_NONE: | |
172 | case ACKX_SEND_ERROR: | |
173 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
174 | break; | |
175 | case ACKX_ABORTED: | |
176 | req->req.error = RAW1394_ERROR_ABORTED; | |
177 | break; | |
178 | case ACKX_TIMEOUT: | |
179 | req->req.error = RAW1394_ERROR_TIMEOUT; | |
180 | break; | |
181 | default: | |
182 | req->req.error = (packet->ack_code << 16) | rcode; | |
183 | break; | |
184 | } | |
185 | ||
186 | if (!((packet->ack_code == ACK_PENDING) && (rcode == RCODE_COMPLETE))) { | |
187 | req->req.length = 0; | |
188 | } | |
189 | ||
190 | if ((req->req.type == RAW1394_REQ_ASYNC_READ) || | |
191 | (req->req.type == RAW1394_REQ_ASYNC_WRITE) || | |
192 | (req->req.type == RAW1394_REQ_ASYNC_STREAM) || | |
193 | (req->req.type == RAW1394_REQ_LOCK) || | |
194 | (req->req.type == RAW1394_REQ_LOCK64)) | |
195 | hpsb_free_tlabel(packet); | |
196 | ||
197 | queue_complete_req(req); | |
198 | } | |
199 | ||
200 | static void add_host(struct hpsb_host *host) | |
201 | { | |
202 | struct host_info *hi; | |
203 | unsigned long flags; | |
204 | ||
8551158a | 205 | hi = kmalloc(sizeof(*hi), GFP_KERNEL); |
1da177e4 | 206 | |
8551158a | 207 | if (hi) { |
1da177e4 LT |
208 | INIT_LIST_HEAD(&hi->list); |
209 | hi->host = host; | |
210 | INIT_LIST_HEAD(&hi->file_info_list); | |
211 | ||
212 | spin_lock_irqsave(&host_info_lock, flags); | |
213 | list_add_tail(&hi->list, &host_info_list); | |
214 | host_count++; | |
215 | spin_unlock_irqrestore(&host_info_lock, flags); | |
216 | } | |
217 | ||
218 | atomic_inc(&internal_generation); | |
219 | } | |
220 | ||
221 | static struct host_info *find_host_info(struct hpsb_host *host) | |
222 | { | |
223 | struct host_info *hi; | |
224 | ||
225 | list_for_each_entry(hi, &host_info_list, list) | |
226 | if (hi->host == host) | |
227 | return hi; | |
228 | ||
229 | return NULL; | |
230 | } | |
231 | ||
232 | static void remove_host(struct hpsb_host *host) | |
233 | { | |
234 | struct host_info *hi; | |
235 | unsigned long flags; | |
236 | ||
237 | spin_lock_irqsave(&host_info_lock, flags); | |
238 | hi = find_host_info(host); | |
239 | ||
240 | if (hi != NULL) { | |
241 | list_del(&hi->list); | |
242 | host_count--; | |
243 | /* | |
244 | FIXME: address ranges should be removed | |
245 | and fileinfo states should be initialized | |
246 | (including setting generation to | |
247 | internal-generation ...) | |
248 | */ | |
249 | } | |
250 | spin_unlock_irqrestore(&host_info_lock, flags); | |
251 | ||
252 | if (hi == NULL) { | |
253 | printk(KERN_ERR "raw1394: attempt to remove unknown host " | |
254 | "0x%p\n", host); | |
255 | return; | |
256 | } | |
257 | ||
258 | kfree(hi); | |
259 | ||
260 | atomic_inc(&internal_generation); | |
261 | } | |
262 | ||
263 | static void host_reset(struct hpsb_host *host) | |
264 | { | |
265 | unsigned long flags; | |
266 | struct host_info *hi; | |
267 | struct file_info *fi; | |
268 | struct pending_request *req; | |
269 | ||
270 | spin_lock_irqsave(&host_info_lock, flags); | |
271 | hi = find_host_info(host); | |
272 | ||
273 | if (hi != NULL) { | |
274 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
275 | if (fi->notification == RAW1394_NOTIFY_ON) { | |
54e6ecb2 | 276 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
277 | |
278 | if (req != NULL) { | |
279 | req->file_info = fi; | |
280 | req->req.type = RAW1394_REQ_BUS_RESET; | |
281 | req->req.generation = | |
282 | get_hpsb_generation(host); | |
283 | req->req.misc = (host->node_id << 16) | |
284 | | host->node_count; | |
285 | if (fi->protocol_version > 3) { | |
286 | req->req.misc |= | |
287 | (NODEID_TO_NODE | |
288 | (host->irm_id) | |
289 | << 8); | |
290 | } | |
291 | ||
292 | queue_complete_req(req); | |
293 | } | |
294 | } | |
295 | } | |
296 | } | |
297 | spin_unlock_irqrestore(&host_info_lock, flags); | |
298 | } | |
299 | ||
300 | static void iso_receive(struct hpsb_host *host, int channel, quadlet_t * data, | |
301 | size_t length) | |
302 | { | |
303 | unsigned long flags; | |
304 | struct host_info *hi; | |
305 | struct file_info *fi; | |
306 | struct pending_request *req, *req_next; | |
307 | struct iso_block_store *ibs = NULL; | |
308 | LIST_HEAD(reqs); | |
309 | ||
310 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { | |
311 | HPSB_INFO("dropped iso packet"); | |
312 | return; | |
313 | } | |
314 | ||
315 | spin_lock_irqsave(&host_info_lock, flags); | |
316 | hi = find_host_info(host); | |
317 | ||
318 | if (hi != NULL) { | |
319 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
320 | if (!(fi->listen_channels & (1ULL << channel))) | |
321 | continue; | |
322 | ||
54e6ecb2 | 323 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
324 | if (!req) |
325 | break; | |
326 | ||
327 | if (!ibs) { | |
8551158a | 328 | ibs = kmalloc(sizeof(*ibs) + length, |
54e6ecb2 | 329 | GFP_ATOMIC); |
1da177e4 LT |
330 | if (!ibs) { |
331 | kfree(req); | |
332 | break; | |
333 | } | |
334 | ||
335 | atomic_add(length, &iso_buffer_size); | |
336 | atomic_set(&ibs->refcount, 0); | |
337 | ibs->data_size = length; | |
338 | memcpy(ibs->data, data, length); | |
339 | } | |
340 | ||
341 | atomic_inc(&ibs->refcount); | |
342 | ||
343 | req->file_info = fi; | |
344 | req->ibs = ibs; | |
345 | req->data = ibs->data; | |
346 | req->req.type = RAW1394_REQ_ISO_RECEIVE; | |
347 | req->req.generation = get_hpsb_generation(host); | |
348 | req->req.misc = 0; | |
349 | req->req.recvb = ptr2int(fi->iso_buffer); | |
350 | req->req.length = min(length, fi->iso_buffer_length); | |
351 | ||
352 | list_add_tail(&req->list, &reqs); | |
353 | } | |
354 | } | |
355 | spin_unlock_irqrestore(&host_info_lock, flags); | |
356 | ||
357 | list_for_each_entry_safe(req, req_next, &reqs, list) | |
358 | queue_complete_req(req); | |
359 | } | |
360 | ||
361 | static void fcp_request(struct hpsb_host *host, int nodeid, int direction, | |
362 | int cts, u8 * data, size_t length) | |
363 | { | |
364 | unsigned long flags; | |
365 | struct host_info *hi; | |
366 | struct file_info *fi; | |
367 | struct pending_request *req, *req_next; | |
368 | struct iso_block_store *ibs = NULL; | |
369 | LIST_HEAD(reqs); | |
370 | ||
371 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { | |
372 | HPSB_INFO("dropped fcp request"); | |
373 | return; | |
374 | } | |
375 | ||
376 | spin_lock_irqsave(&host_info_lock, flags); | |
377 | hi = find_host_info(host); | |
378 | ||
379 | if (hi != NULL) { | |
380 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
381 | if (!fi->fcp_buffer) | |
382 | continue; | |
383 | ||
54e6ecb2 | 384 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
385 | if (!req) |
386 | break; | |
387 | ||
388 | if (!ibs) { | |
8551158a | 389 | ibs = kmalloc(sizeof(*ibs) + length, |
54e6ecb2 | 390 | GFP_ATOMIC); |
1da177e4 LT |
391 | if (!ibs) { |
392 | kfree(req); | |
393 | break; | |
394 | } | |
395 | ||
396 | atomic_add(length, &iso_buffer_size); | |
397 | atomic_set(&ibs->refcount, 0); | |
398 | ibs->data_size = length; | |
399 | memcpy(ibs->data, data, length); | |
400 | } | |
401 | ||
402 | atomic_inc(&ibs->refcount); | |
403 | ||
404 | req->file_info = fi; | |
405 | req->ibs = ibs; | |
406 | req->data = ibs->data; | |
407 | req->req.type = RAW1394_REQ_FCP_REQUEST; | |
408 | req->req.generation = get_hpsb_generation(host); | |
409 | req->req.misc = nodeid | (direction << 16); | |
410 | req->req.recvb = ptr2int(fi->fcp_buffer); | |
411 | req->req.length = length; | |
412 | ||
413 | list_add_tail(&req->list, &reqs); | |
414 | } | |
415 | } | |
416 | spin_unlock_irqrestore(&host_info_lock, flags); | |
417 | ||
418 | list_for_each_entry_safe(req, req_next, &reqs, list) | |
419 | queue_complete_req(req); | |
420 | } | |
421 | ||
4bc32c4d AK |
422 | #ifdef CONFIG_COMPAT |
423 | struct compat_raw1394_req { | |
7597028a BC |
424 | __u32 type; |
425 | __s32 error; | |
426 | __u32 misc; | |
4bc32c4d | 427 | |
7597028a BC |
428 | __u32 generation; |
429 | __u32 length; | |
4bc32c4d | 430 | |
7597028a | 431 | __u64 address; |
4bc32c4d | 432 | |
7597028a | 433 | __u64 tag; |
4bc32c4d | 434 | |
7597028a BC |
435 | __u64 sendb; |
436 | __u64 recvb; | |
437 | } __attribute__((packed)); | |
4bc32c4d AK |
438 | |
439 | static const char __user *raw1394_compat_write(const char __user *buf) | |
440 | { | |
7597028a | 441 | struct compat_raw1394_req __user *cr = (typeof(cr)) buf; |
4bc32c4d AK |
442 | struct raw1394_request __user *r; |
443 | r = compat_alloc_user_space(sizeof(struct raw1394_request)); | |
444 | ||
445 | #define C(x) __copy_in_user(&r->x, &cr->x, sizeof(r->x)) | |
446 | ||
447 | if (copy_in_user(r, cr, sizeof(struct compat_raw1394_req)) || | |
7597028a BC |
448 | C(address) || |
449 | C(tag) || | |
450 | C(sendb) || | |
451 | C(recvb)) | |
4bc32c4d AK |
452 | return ERR_PTR(-EFAULT); |
453 | return (const char __user *)r; | |
454 | } | |
455 | #undef C | |
456 | ||
457 | #define P(x) __put_user(r->x, &cr->x) | |
458 | ||
7597028a | 459 | static int |
4bc32c4d AK |
460 | raw1394_compat_read(const char __user *buf, struct raw1394_request *r) |
461 | { | |
7597028a BC |
462 | struct compat_raw1394_req __user *cr = (typeof(cr)) r; |
463 | if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) || | |
4bc32c4d AK |
464 | P(type) || |
465 | P(error) || | |
466 | P(misc) || | |
467 | P(generation) || | |
468 | P(length) || | |
469 | P(address) || | |
470 | P(tag) || | |
471 | P(sendb) || | |
472 | P(recvb)) | |
473 | return -EFAULT; | |
474 | return sizeof(struct compat_raw1394_req); | |
475 | } | |
476 | #undef P | |
477 | ||
478 | #endif | |
479 | ||
45289bf6 SR |
480 | /* get next completed request (caller must hold fi->reqlists_lock) */ |
481 | static inline struct pending_request *__next_complete_req(struct file_info *fi) | |
482 | { | |
483 | struct list_head *lh; | |
484 | struct pending_request *req = NULL; | |
485 | ||
486 | if (!list_empty(&fi->req_complete)) { | |
487 | lh = fi->req_complete.next; | |
488 | list_del(lh); | |
489 | req = list_entry(lh, struct pending_request, list); | |
490 | } | |
491 | return req; | |
492 | } | |
493 | ||
494 | /* atomically get next completed request */ | |
495 | static struct pending_request *next_complete_req(struct file_info *fi) | |
496 | { | |
497 | unsigned long flags; | |
498 | struct pending_request *req; | |
499 | ||
500 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
501 | req = __next_complete_req(fi); | |
502 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
503 | return req; | |
504 | } | |
4bc32c4d | 505 | |
1da177e4 LT |
506 | static ssize_t raw1394_read(struct file *file, char __user * buffer, |
507 | size_t count, loff_t * offset_is_ignored) | |
508 | { | |
509 | struct file_info *fi = (struct file_info *)file->private_data; | |
1da177e4 LT |
510 | struct pending_request *req; |
511 | ssize_t ret; | |
512 | ||
4bc32c4d AK |
513 | #ifdef CONFIG_COMPAT |
514 | if (count == sizeof(struct compat_raw1394_req)) { | |
515 | /* ok */ | |
516 | } else | |
517 | #endif | |
1da177e4 LT |
518 | if (count != sizeof(struct raw1394_request)) { |
519 | return -EINVAL; | |
520 | } | |
521 | ||
522 | if (!access_ok(VERIFY_WRITE, buffer, count)) { | |
523 | return -EFAULT; | |
524 | } | |
525 | ||
526 | if (file->f_flags & O_NONBLOCK) { | |
45289bf6 | 527 | if (!(req = next_complete_req(fi))) |
1da177e4 | 528 | return -EAGAIN; |
1da177e4 | 529 | } else { |
45289bf6 SR |
530 | /* |
531 | * NB: We call the macro wait_event_interruptible() with a | |
532 | * condition argument with side effect. This is only possible | |
533 | * because the side effect does not occur until the condition | |
534 | * became true, and wait_event_interruptible() won't evaluate | |
535 | * the condition again after that. | |
536 | */ | |
537 | if (wait_event_interruptible(fi->wait_complete, | |
538 | (req = next_complete_req(fi)))) | |
1da177e4 | 539 | return -ERESTARTSYS; |
1da177e4 LT |
540 | } |
541 | ||
1da177e4 LT |
542 | if (req->req.length) { |
543 | if (copy_to_user(int2ptr(req->req.recvb), req->data, | |
544 | req->req.length)) { | |
545 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
546 | } | |
547 | } | |
1da177e4 | 548 | |
4bc32c4d | 549 | #ifdef CONFIG_COMPAT |
7597028a BC |
550 | if (count == sizeof(struct compat_raw1394_req) && |
551 | sizeof(struct compat_raw1394_req) != | |
552 | sizeof(struct raw1394_request)) { | |
4bc32c4d | 553 | ret = raw1394_compat_read(buffer, &req->req); |
7597028a | 554 | } else |
4bc32c4d AK |
555 | #endif |
556 | { | |
557 | if (copy_to_user(buffer, &req->req, sizeof(req->req))) { | |
558 | ret = -EFAULT; | |
559 | goto out; | |
7597028a | 560 | } |
4bc32c4d AK |
561 | ret = (ssize_t) sizeof(struct raw1394_request); |
562 | } | |
1da177e4 LT |
563 | out: |
564 | free_pending_request(req); | |
565 | return ret; | |
566 | } | |
567 | ||
568 | static int state_opened(struct file_info *fi, struct pending_request *req) | |
569 | { | |
570 | if (req->req.type == RAW1394_REQ_INITIALIZE) { | |
571 | switch (req->req.misc) { | |
572 | case RAW1394_KERNELAPI_VERSION: | |
573 | case 3: | |
574 | fi->state = initialized; | |
575 | fi->protocol_version = req->req.misc; | |
576 | req->req.error = RAW1394_ERROR_NONE; | |
577 | req->req.generation = atomic_read(&internal_generation); | |
578 | break; | |
579 | ||
580 | default: | |
581 | req->req.error = RAW1394_ERROR_COMPAT; | |
582 | req->req.misc = RAW1394_KERNELAPI_VERSION; | |
583 | } | |
584 | } else { | |
585 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
586 | } | |
587 | ||
588 | req->req.length = 0; | |
589 | queue_complete_req(req); | |
590 | return sizeof(struct raw1394_request); | |
591 | } | |
592 | ||
593 | static int state_initialized(struct file_info *fi, struct pending_request *req) | |
594 | { | |
4a9949d7 | 595 | unsigned long flags; |
1da177e4 LT |
596 | struct host_info *hi; |
597 | struct raw1394_khost_list *khl; | |
598 | ||
599 | if (req->req.generation != atomic_read(&internal_generation)) { | |
600 | req->req.error = RAW1394_ERROR_GENERATION; | |
601 | req->req.generation = atomic_read(&internal_generation); | |
602 | req->req.length = 0; | |
603 | queue_complete_req(req); | |
604 | return sizeof(struct raw1394_request); | |
605 | } | |
606 | ||
607 | switch (req->req.type) { | |
608 | case RAW1394_REQ_LIST_CARDS: | |
4a9949d7 | 609 | spin_lock_irqsave(&host_info_lock, flags); |
54e6ecb2 | 610 | khl = kmalloc(sizeof(*khl) * host_count, GFP_ATOMIC); |
1da177e4 | 611 | |
8551158a | 612 | if (khl) { |
1da177e4 LT |
613 | req->req.misc = host_count; |
614 | req->data = (quadlet_t *) khl; | |
615 | ||
616 | list_for_each_entry(hi, &host_info_list, list) { | |
617 | khl->nodes = hi->host->node_count; | |
618 | strcpy(khl->name, hi->host->driver->name); | |
619 | khl++; | |
620 | } | |
621 | } | |
4a9949d7 | 622 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 | 623 | |
8551158a | 624 | if (khl) { |
1da177e4 LT |
625 | req->req.error = RAW1394_ERROR_NONE; |
626 | req->req.length = min(req->req.length, | |
627 | (u32) (sizeof | |
628 | (struct raw1394_khost_list) | |
629 | * req->req.misc)); | |
630 | req->free_data = 1; | |
631 | } else { | |
632 | return -ENOMEM; | |
633 | } | |
634 | break; | |
635 | ||
636 | case RAW1394_REQ_SET_CARD: | |
4a9949d7 | 637 | spin_lock_irqsave(&host_info_lock, flags); |
0fe4c6fc | 638 | if (req->req.misc >= host_count) { |
1da177e4 | 639 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
0fe4c6fc | 640 | goto out_set_card; |
1da177e4 | 641 | } |
0fe4c6fc SR |
642 | list_for_each_entry(hi, &host_info_list, list) |
643 | if (!req->req.misc--) | |
644 | break; | |
645 | get_device(&hi->host->device); /* FIXME handle failure case */ | |
646 | list_add_tail(&fi->list, &hi->file_info_list); | |
647 | ||
648 | /* prevent unloading of the host's low-level driver */ | |
649 | if (!try_module_get(hi->host->driver->owner)) { | |
650 | req->req.error = RAW1394_ERROR_ABORTED; | |
651 | goto out_set_card; | |
652 | } | |
653 | WARN_ON(fi->host); | |
654 | fi->host = hi->host; | |
655 | fi->state = connected; | |
656 | ||
657 | req->req.error = RAW1394_ERROR_NONE; | |
658 | req->req.generation = get_hpsb_generation(fi->host); | |
659 | req->req.misc = (fi->host->node_id << 16) | |
660 | | fi->host->node_count; | |
661 | if (fi->protocol_version > 3) | |
662 | req->req.misc |= NODEID_TO_NODE(fi->host->irm_id) << 8; | |
663 | out_set_card: | |
4a9949d7 | 664 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
665 | |
666 | req->req.length = 0; | |
667 | break; | |
668 | ||
669 | default: | |
670 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
671 | req->req.length = 0; | |
672 | break; | |
673 | } | |
674 | ||
675 | queue_complete_req(req); | |
676 | return sizeof(struct raw1394_request); | |
677 | } | |
678 | ||
679 | static void handle_iso_listen(struct file_info *fi, struct pending_request *req) | |
680 | { | |
681 | int channel = req->req.misc; | |
682 | ||
1da177e4 LT |
683 | if ((channel > 63) || (channel < -64)) { |
684 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
685 | } else if (channel >= 0) { | |
686 | /* allocate channel req.misc */ | |
687 | if (fi->listen_channels & (1ULL << channel)) { | |
688 | req->req.error = RAW1394_ERROR_ALREADY; | |
689 | } else { | |
690 | if (hpsb_listen_channel | |
691 | (&raw1394_highlevel, fi->host, channel)) { | |
692 | req->req.error = RAW1394_ERROR_ALREADY; | |
693 | } else { | |
694 | fi->listen_channels |= 1ULL << channel; | |
695 | fi->iso_buffer = int2ptr(req->req.recvb); | |
696 | fi->iso_buffer_length = req->req.length; | |
697 | } | |
698 | } | |
699 | } else { | |
700 | /* deallocate channel (one's complement neg) req.misc */ | |
701 | channel = ~channel; | |
702 | ||
703 | if (fi->listen_channels & (1ULL << channel)) { | |
704 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, | |
705 | channel); | |
706 | fi->listen_channels &= ~(1ULL << channel); | |
707 | } else { | |
708 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
709 | } | |
710 | } | |
711 | ||
712 | req->req.length = 0; | |
713 | queue_complete_req(req); | |
1da177e4 LT |
714 | } |
715 | ||
716 | static void handle_fcp_listen(struct file_info *fi, struct pending_request *req) | |
717 | { | |
718 | if (req->req.misc) { | |
719 | if (fi->fcp_buffer) { | |
720 | req->req.error = RAW1394_ERROR_ALREADY; | |
721 | } else { | |
722 | fi->fcp_buffer = int2ptr(req->req.recvb); | |
723 | } | |
724 | } else { | |
725 | if (!fi->fcp_buffer) { | |
726 | req->req.error = RAW1394_ERROR_ALREADY; | |
727 | } else { | |
728 | fi->fcp_buffer = NULL; | |
729 | } | |
730 | } | |
731 | ||
732 | req->req.length = 0; | |
733 | queue_complete_req(req); | |
734 | } | |
735 | ||
736 | static int handle_async_request(struct file_info *fi, | |
737 | struct pending_request *req, int node) | |
738 | { | |
4a9949d7 | 739 | unsigned long flags; |
1da177e4 LT |
740 | struct hpsb_packet *packet = NULL; |
741 | u64 addr = req->req.address & 0xffffffffffffULL; | |
742 | ||
743 | switch (req->req.type) { | |
744 | case RAW1394_REQ_ASYNC_READ: | |
745 | DBGMSG("read_request called"); | |
746 | packet = | |
747 | hpsb_make_readpacket(fi->host, node, addr, req->req.length); | |
748 | ||
749 | if (!packet) | |
750 | return -ENOMEM; | |
751 | ||
752 | if (req->req.length == 4) | |
753 | req->data = &packet->header[3]; | |
754 | else | |
755 | req->data = packet->data; | |
756 | ||
757 | break; | |
758 | ||
759 | case RAW1394_REQ_ASYNC_WRITE: | |
760 | DBGMSG("write_request called"); | |
761 | ||
762 | packet = hpsb_make_writepacket(fi->host, node, addr, NULL, | |
763 | req->req.length); | |
764 | if (!packet) | |
765 | return -ENOMEM; | |
766 | ||
767 | if (req->req.length == 4) { | |
768 | if (copy_from_user | |
769 | (&packet->header[3], int2ptr(req->req.sendb), | |
770 | req->req.length)) | |
771 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
772 | } else { | |
773 | if (copy_from_user | |
774 | (packet->data, int2ptr(req->req.sendb), | |
775 | req->req.length)) | |
776 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
777 | } | |
778 | ||
779 | req->req.length = 0; | |
780 | break; | |
781 | ||
782 | case RAW1394_REQ_ASYNC_STREAM: | |
783 | DBGMSG("stream_request called"); | |
784 | ||
785 | packet = | |
786 | hpsb_make_streampacket(fi->host, NULL, req->req.length, | |
787 | node & 0x3f /*channel */ , | |
788 | (req->req.misc >> 16) & 0x3, | |
789 | req->req.misc & 0xf); | |
790 | if (!packet) | |
791 | return -ENOMEM; | |
792 | ||
793 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
794 | req->req.length)) | |
795 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
796 | ||
797 | req->req.length = 0; | |
798 | break; | |
799 | ||
800 | case RAW1394_REQ_LOCK: | |
801 | DBGMSG("lock_request called"); | |
802 | if ((req->req.misc == EXTCODE_FETCH_ADD) | |
803 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { | |
804 | if (req->req.length != 4) { | |
805 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
806 | break; | |
807 | } | |
808 | } else { | |
809 | if (req->req.length != 8) { | |
810 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
811 | break; | |
812 | } | |
813 | } | |
814 | ||
815 | packet = hpsb_make_lockpacket(fi->host, node, addr, | |
816 | req->req.misc, NULL, 0); | |
817 | if (!packet) | |
818 | return -ENOMEM; | |
819 | ||
820 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
821 | req->req.length)) { | |
822 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
823 | break; | |
824 | } | |
825 | ||
826 | req->data = packet->data; | |
827 | req->req.length = 4; | |
828 | break; | |
829 | ||
830 | case RAW1394_REQ_LOCK64: | |
831 | DBGMSG("lock64_request called"); | |
832 | if ((req->req.misc == EXTCODE_FETCH_ADD) | |
833 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { | |
834 | if (req->req.length != 8) { | |
835 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
836 | break; | |
837 | } | |
838 | } else { | |
839 | if (req->req.length != 16) { | |
840 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
841 | break; | |
842 | } | |
843 | } | |
844 | packet = hpsb_make_lock64packet(fi->host, node, addr, | |
845 | req->req.misc, NULL, 0); | |
846 | if (!packet) | |
847 | return -ENOMEM; | |
848 | ||
849 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
850 | req->req.length)) { | |
851 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
852 | break; | |
853 | } | |
854 | ||
855 | req->data = packet->data; | |
856 | req->req.length = 8; | |
857 | break; | |
858 | ||
859 | default: | |
860 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
861 | } | |
862 | ||
863 | req->packet = packet; | |
864 | ||
865 | if (req->req.error) { | |
866 | req->req.length = 0; | |
867 | queue_complete_req(req); | |
868 | return sizeof(struct raw1394_request); | |
869 | } | |
870 | ||
871 | hpsb_set_packet_complete_task(packet, | |
872 | (void (*)(void *))queue_complete_cb, req); | |
873 | ||
4a9949d7 | 874 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 875 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 876 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
877 | |
878 | packet->generation = req->req.generation; | |
879 | ||
880 | if (hpsb_send_packet(packet) < 0) { | |
881 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
882 | req->req.length = 0; | |
883 | hpsb_free_tlabel(packet); | |
884 | queue_complete_req(req); | |
885 | } | |
886 | return sizeof(struct raw1394_request); | |
887 | } | |
888 | ||
889 | static int handle_iso_send(struct file_info *fi, struct pending_request *req, | |
890 | int channel) | |
891 | { | |
4a9949d7 | 892 | unsigned long flags; |
1da177e4 LT |
893 | struct hpsb_packet *packet; |
894 | ||
895 | packet = hpsb_make_isopacket(fi->host, req->req.length, channel & 0x3f, | |
896 | (req->req.misc >> 16) & 0x3, | |
897 | req->req.misc & 0xf); | |
898 | if (!packet) | |
899 | return -ENOMEM; | |
900 | ||
901 | packet->speed_code = req->req.address & 0x3; | |
902 | ||
903 | req->packet = packet; | |
904 | ||
905 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
906 | req->req.length)) { | |
907 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
908 | req->req.length = 0; | |
909 | queue_complete_req(req); | |
910 | return sizeof(struct raw1394_request); | |
911 | } | |
912 | ||
913 | req->req.length = 0; | |
914 | hpsb_set_packet_complete_task(packet, | |
915 | (void (*)(void *))queue_complete_req, | |
916 | req); | |
917 | ||
4a9949d7 | 918 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 919 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 920 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
921 | |
922 | /* Update the generation of the packet just before sending. */ | |
923 | packet->generation = req->req.generation; | |
924 | ||
925 | if (hpsb_send_packet(packet) < 0) { | |
926 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
927 | queue_complete_req(req); | |
928 | } | |
929 | ||
930 | return sizeof(struct raw1394_request); | |
931 | } | |
932 | ||
933 | static int handle_async_send(struct file_info *fi, struct pending_request *req) | |
934 | { | |
4a9949d7 | 935 | unsigned long flags; |
1da177e4 LT |
936 | struct hpsb_packet *packet; |
937 | int header_length = req->req.misc & 0xffff; | |
938 | int expect_response = req->req.misc >> 16; | |
976da96a | 939 | size_t data_size; |
1da177e4 | 940 | |
7542e0e6 SR |
941 | if (header_length > req->req.length || header_length < 12 || |
942 | header_length > FIELD_SIZEOF(struct hpsb_packet, header)) { | |
1da177e4 LT |
943 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
944 | req->req.length = 0; | |
945 | queue_complete_req(req); | |
946 | return sizeof(struct raw1394_request); | |
947 | } | |
948 | ||
976da96a PV |
949 | data_size = req->req.length - header_length; |
950 | packet = hpsb_alloc_packet(data_size); | |
1da177e4 LT |
951 | req->packet = packet; |
952 | if (!packet) | |
953 | return -ENOMEM; | |
954 | ||
955 | if (copy_from_user(packet->header, int2ptr(req->req.sendb), | |
956 | header_length)) { | |
957 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
958 | req->req.length = 0; | |
959 | queue_complete_req(req); | |
960 | return sizeof(struct raw1394_request); | |
961 | } | |
962 | ||
963 | if (copy_from_user | |
964 | (packet->data, int2ptr(req->req.sendb) + header_length, | |
976da96a | 965 | data_size)) { |
1da177e4 LT |
966 | req->req.error = RAW1394_ERROR_MEMFAULT; |
967 | req->req.length = 0; | |
968 | queue_complete_req(req); | |
969 | return sizeof(struct raw1394_request); | |
970 | } | |
971 | ||
972 | packet->type = hpsb_async; | |
973 | packet->node_id = packet->header[0] >> 16; | |
974 | packet->tcode = (packet->header[0] >> 4) & 0xf; | |
975 | packet->tlabel = (packet->header[0] >> 10) & 0x3f; | |
976 | packet->host = fi->host; | |
977 | packet->expect_response = expect_response; | |
978 | packet->header_size = header_length; | |
976da96a | 979 | packet->data_size = data_size; |
1da177e4 LT |
980 | |
981 | req->req.length = 0; | |
982 | hpsb_set_packet_complete_task(packet, | |
983 | (void (*)(void *))queue_complete_cb, req); | |
984 | ||
4a9949d7 | 985 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 986 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 987 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
988 | |
989 | /* Update the generation of the packet just before sending. */ | |
990 | packet->generation = req->req.generation; | |
991 | ||
992 | if (hpsb_send_packet(packet) < 0) { | |
993 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
994 | queue_complete_req(req); | |
995 | } | |
996 | ||
997 | return sizeof(struct raw1394_request); | |
998 | } | |
999 | ||
1000 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, | |
1001 | u64 addr, size_t length, u16 flags) | |
1002 | { | |
4a9949d7 | 1003 | unsigned long irqflags; |
1da177e4 LT |
1004 | struct pending_request *req; |
1005 | struct host_info *hi; | |
1006 | struct file_info *fi = NULL; | |
1007 | struct list_head *entry; | |
1008 | struct arm_addr *arm_addr = NULL; | |
1009 | struct arm_request *arm_req = NULL; | |
1010 | struct arm_response *arm_resp = NULL; | |
1011 | int found = 0, size = 0, rcode = -1; | |
1012 | struct arm_request_response *arm_req_resp = NULL; | |
1013 | ||
1014 | DBGMSG("arm_read called by node: %X" | |
1015 | "addr: %4.4x %8.8x length: %Zu", nodeid, | |
1016 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), | |
1017 | length); | |
4a9949d7 | 1018 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1019 | hi = find_host_info(host); /* search address-entry */ |
1020 | if (hi != NULL) { | |
1021 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1022 | entry = fi->addr_list.next; | |
1023 | while (entry != &(fi->addr_list)) { | |
1024 | arm_addr = | |
1025 | list_entry(entry, struct arm_addr, | |
1026 | addr_list); | |
1027 | if (((arm_addr->start) <= (addr)) | |
1028 | && ((arm_addr->end) >= (addr + length))) { | |
1029 | found = 1; | |
1030 | break; | |
1031 | } | |
1032 | entry = entry->next; | |
1033 | } | |
1034 | if (found) { | |
1035 | break; | |
1036 | } | |
1037 | } | |
1038 | } | |
1039 | rcode = -1; | |
1040 | if (!found) { | |
1041 | printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found" | |
1042 | " -> rcode_address_error\n"); | |
4a9949d7 | 1043 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1044 | return (RCODE_ADDRESS_ERROR); |
1045 | } else { | |
1046 | DBGMSG("arm_read addr_entry FOUND"); | |
1047 | } | |
1048 | if (arm_addr->rec_length < length) { | |
1049 | DBGMSG("arm_read blocklength too big -> rcode_data_error"); | |
1050 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ | |
1051 | } | |
1052 | if (rcode == -1) { | |
1053 | if (arm_addr->access_rights & ARM_READ) { | |
1054 | if (!(arm_addr->client_transactions & ARM_READ)) { | |
1055 | memcpy(buffer, | |
1056 | (arm_addr->addr_space_buffer) + (addr - | |
1057 | (arm_addr-> | |
1058 | start)), | |
1059 | length); | |
1060 | DBGMSG("arm_read -> (rcode_complete)"); | |
1061 | rcode = RCODE_COMPLETE; | |
1062 | } | |
1063 | } else { | |
1064 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1065 | DBGMSG("arm_read -> rcode_type_error (access denied)"); | |
1066 | } | |
1067 | } | |
1068 | if (arm_addr->notification_options & ARM_READ) { | |
1069 | DBGMSG("arm_read -> entering notification-section"); | |
54e6ecb2 | 1070 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
1071 | if (!req) { |
1072 | DBGMSG("arm_read -> rcode_conflict_error"); | |
4a9949d7 | 1073 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1074 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1075 | The request may be retried */ | |
1076 | } | |
1077 | if (rcode == RCODE_COMPLETE) { | |
1078 | size = | |
1079 | sizeof(struct arm_request) + | |
1080 | sizeof(struct arm_response) + | |
1081 | length * sizeof(byte_t) + | |
1082 | sizeof(struct arm_request_response); | |
1083 | } else { | |
1084 | size = | |
1085 | sizeof(struct arm_request) + | |
1086 | sizeof(struct arm_response) + | |
1087 | sizeof(struct arm_request_response); | |
1088 | } | |
54e6ecb2 | 1089 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1090 | if (!(req->data)) { |
1091 | free_pending_request(req); | |
1092 | DBGMSG("arm_read -> rcode_conflict_error"); | |
4a9949d7 | 1093 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1094 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1095 | The request may be retried */ | |
1096 | } | |
1097 | req->free_data = 1; | |
1098 | req->file_info = fi; | |
1099 | req->req.type = RAW1394_REQ_ARM; | |
1100 | req->req.generation = get_hpsb_generation(host); | |
1101 | req->req.misc = | |
1102 | (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF)); | |
1103 | req->req.tag = arm_addr->arm_tag; | |
1104 | req->req.recvb = arm_addr->recvb; | |
1105 | req->req.length = size; | |
1106 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1107 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1108 | (sizeof | |
1109 | (struct | |
1110 | arm_request_response))); | |
1111 | arm_resp = | |
1112 | (struct arm_response *)((byte_t *) (arm_req) + | |
1113 | (sizeof(struct arm_request))); | |
1114 | arm_req->buffer = NULL; | |
1115 | arm_resp->buffer = NULL; | |
1116 | if (rcode == RCODE_COMPLETE) { | |
1117 | byte_t *buf = | |
1118 | (byte_t *) arm_resp + sizeof(struct arm_response); | |
1119 | memcpy(buf, | |
1120 | (arm_addr->addr_space_buffer) + (addr - | |
1121 | (arm_addr-> | |
1122 | start)), | |
1123 | length); | |
1124 | arm_resp->buffer = | |
1125 | int2ptr((arm_addr->recvb) + | |
1126 | sizeof(struct arm_request_response) + | |
1127 | sizeof(struct arm_request) + | |
1128 | sizeof(struct arm_response)); | |
1129 | } | |
1130 | arm_resp->buffer_length = | |
1131 | (rcode == RCODE_COMPLETE) ? length : 0; | |
1132 | arm_resp->response_code = rcode; | |
1133 | arm_req->buffer_length = 0; | |
1134 | arm_req->generation = req->req.generation; | |
1135 | arm_req->extended_transaction_code = 0; | |
1136 | arm_req->destination_offset = addr; | |
1137 | arm_req->source_nodeid = nodeid; | |
1138 | arm_req->destination_nodeid = host->node_id; | |
1139 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1140 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1141 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1142 | sizeof(struct | |
1143 | arm_request_response)); | |
1144 | arm_req_resp->response = | |
1145 | int2ptr((arm_addr->recvb) + | |
1146 | sizeof(struct arm_request_response) + | |
1147 | sizeof(struct arm_request)); | |
1148 | queue_complete_req(req); | |
1149 | } | |
4a9949d7 | 1150 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1151 | return (rcode); |
1152 | } | |
1153 | ||
1154 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, | |
1155 | quadlet_t * data, u64 addr, size_t length, u16 flags) | |
1156 | { | |
4a9949d7 | 1157 | unsigned long irqflags; |
1da177e4 LT |
1158 | struct pending_request *req; |
1159 | struct host_info *hi; | |
1160 | struct file_info *fi = NULL; | |
1161 | struct list_head *entry; | |
1162 | struct arm_addr *arm_addr = NULL; | |
1163 | struct arm_request *arm_req = NULL; | |
1164 | struct arm_response *arm_resp = NULL; | |
1165 | int found = 0, size = 0, rcode = -1, length_conflict = 0; | |
1166 | struct arm_request_response *arm_req_resp = NULL; | |
1167 | ||
1168 | DBGMSG("arm_write called by node: %X" | |
1169 | "addr: %4.4x %8.8x length: %Zu", nodeid, | |
1170 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), | |
1171 | length); | |
4a9949d7 | 1172 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1173 | hi = find_host_info(host); /* search address-entry */ |
1174 | if (hi != NULL) { | |
1175 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1176 | entry = fi->addr_list.next; | |
1177 | while (entry != &(fi->addr_list)) { | |
1178 | arm_addr = | |
1179 | list_entry(entry, struct arm_addr, | |
1180 | addr_list); | |
1181 | if (((arm_addr->start) <= (addr)) | |
1182 | && ((arm_addr->end) >= (addr + length))) { | |
1183 | found = 1; | |
1184 | break; | |
1185 | } | |
1186 | entry = entry->next; | |
1187 | } | |
1188 | if (found) { | |
1189 | break; | |
1190 | } | |
1191 | } | |
1192 | } | |
1193 | rcode = -1; | |
1194 | if (!found) { | |
1195 | printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found" | |
1196 | " -> rcode_address_error\n"); | |
4a9949d7 | 1197 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1198 | return (RCODE_ADDRESS_ERROR); |
1199 | } else { | |
1200 | DBGMSG("arm_write addr_entry FOUND"); | |
1201 | } | |
1202 | if (arm_addr->rec_length < length) { | |
1203 | DBGMSG("arm_write blocklength too big -> rcode_data_error"); | |
1204 | length_conflict = 1; | |
1205 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ | |
1206 | } | |
1207 | if (rcode == -1) { | |
1208 | if (arm_addr->access_rights & ARM_WRITE) { | |
1209 | if (!(arm_addr->client_transactions & ARM_WRITE)) { | |
1210 | memcpy((arm_addr->addr_space_buffer) + | |
1211 | (addr - (arm_addr->start)), data, | |
1212 | length); | |
1213 | DBGMSG("arm_write -> (rcode_complete)"); | |
1214 | rcode = RCODE_COMPLETE; | |
1215 | } | |
1216 | } else { | |
1217 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1218 | DBGMSG("arm_write -> rcode_type_error (access denied)"); | |
1219 | } | |
1220 | } | |
1221 | if (arm_addr->notification_options & ARM_WRITE) { | |
1222 | DBGMSG("arm_write -> entering notification-section"); | |
54e6ecb2 | 1223 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
1224 | if (!req) { |
1225 | DBGMSG("arm_write -> rcode_conflict_error"); | |
4a9949d7 | 1226 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1227 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1228 | The request my be retried */ | |
1229 | } | |
1230 | size = | |
1231 | sizeof(struct arm_request) + sizeof(struct arm_response) + | |
1232 | (length) * sizeof(byte_t) + | |
1233 | sizeof(struct arm_request_response); | |
54e6ecb2 | 1234 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1235 | if (!(req->data)) { |
1236 | free_pending_request(req); | |
1237 | DBGMSG("arm_write -> rcode_conflict_error"); | |
4a9949d7 | 1238 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1239 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1240 | The request may be retried */ | |
1241 | } | |
1242 | req->free_data = 1; | |
1243 | req->file_info = fi; | |
1244 | req->req.type = RAW1394_REQ_ARM; | |
1245 | req->req.generation = get_hpsb_generation(host); | |
1246 | req->req.misc = | |
1247 | (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF)); | |
1248 | req->req.tag = arm_addr->arm_tag; | |
1249 | req->req.recvb = arm_addr->recvb; | |
1250 | req->req.length = size; | |
1251 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1252 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1253 | (sizeof | |
1254 | (struct | |
1255 | arm_request_response))); | |
1256 | arm_resp = | |
1257 | (struct arm_response *)((byte_t *) (arm_req) + | |
1258 | (sizeof(struct arm_request))); | |
1259 | arm_resp->buffer = NULL; | |
1260 | memcpy((byte_t *) arm_resp + sizeof(struct arm_response), | |
1261 | data, length); | |
1262 | arm_req->buffer = int2ptr((arm_addr->recvb) + | |
1263 | sizeof(struct arm_request_response) + | |
1264 | sizeof(struct arm_request) + | |
1265 | sizeof(struct arm_response)); | |
1266 | arm_req->buffer_length = length; | |
1267 | arm_req->generation = req->req.generation; | |
1268 | arm_req->extended_transaction_code = 0; | |
1269 | arm_req->destination_offset = addr; | |
1270 | arm_req->source_nodeid = nodeid; | |
1271 | arm_req->destination_nodeid = destid; | |
1272 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1273 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1274 | arm_resp->buffer_length = 0; | |
1275 | arm_resp->response_code = rcode; | |
1276 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1277 | sizeof(struct | |
1278 | arm_request_response)); | |
1279 | arm_req_resp->response = | |
1280 | int2ptr((arm_addr->recvb) + | |
1281 | sizeof(struct arm_request_response) + | |
1282 | sizeof(struct arm_request)); | |
1283 | queue_complete_req(req); | |
1284 | } | |
4a9949d7 | 1285 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1286 | return (rcode); |
1287 | } | |
1288 | ||
1289 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, | |
1290 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, | |
1291 | u16 flags) | |
1292 | { | |
4a9949d7 | 1293 | unsigned long irqflags; |
1da177e4 LT |
1294 | struct pending_request *req; |
1295 | struct host_info *hi; | |
1296 | struct file_info *fi = NULL; | |
1297 | struct list_head *entry; | |
1298 | struct arm_addr *arm_addr = NULL; | |
1299 | struct arm_request *arm_req = NULL; | |
1300 | struct arm_response *arm_resp = NULL; | |
1301 | int found = 0, size = 0, rcode = -1; | |
1302 | quadlet_t old, new; | |
1303 | struct arm_request_response *arm_req_resp = NULL; | |
1304 | ||
1305 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || | |
1306 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { | |
1307 | DBGMSG("arm_lock called by node: %X " | |
1308 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X", | |
1309 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1310 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, | |
1311 | be32_to_cpu(data)); | |
1312 | } else { | |
1313 | DBGMSG("arm_lock called by node: %X " | |
1314 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X", | |
1315 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1316 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, | |
1317 | be32_to_cpu(data), be32_to_cpu(arg)); | |
1318 | } | |
4a9949d7 | 1319 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1320 | hi = find_host_info(host); /* search address-entry */ |
1321 | if (hi != NULL) { | |
1322 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1323 | entry = fi->addr_list.next; | |
1324 | while (entry != &(fi->addr_list)) { | |
1325 | arm_addr = | |
1326 | list_entry(entry, struct arm_addr, | |
1327 | addr_list); | |
1328 | if (((arm_addr->start) <= (addr)) | |
1329 | && ((arm_addr->end) >= | |
1330 | (addr + sizeof(*store)))) { | |
1331 | found = 1; | |
1332 | break; | |
1333 | } | |
1334 | entry = entry->next; | |
1335 | } | |
1336 | if (found) { | |
1337 | break; | |
1338 | } | |
1339 | } | |
1340 | } | |
1341 | rcode = -1; | |
1342 | if (!found) { | |
1343 | printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found" | |
1344 | " -> rcode_address_error\n"); | |
4a9949d7 | 1345 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1346 | return (RCODE_ADDRESS_ERROR); |
1347 | } else { | |
1348 | DBGMSG("arm_lock addr_entry FOUND"); | |
1349 | } | |
1350 | if (rcode == -1) { | |
1351 | if (arm_addr->access_rights & ARM_LOCK) { | |
1352 | if (!(arm_addr->client_transactions & ARM_LOCK)) { | |
1353 | memcpy(&old, | |
1354 | (arm_addr->addr_space_buffer) + (addr - | |
1355 | (arm_addr-> | |
1356 | start)), | |
1357 | sizeof(old)); | |
1358 | switch (ext_tcode) { | |
1359 | case (EXTCODE_MASK_SWAP): | |
1360 | new = data | (old & ~arg); | |
1361 | break; | |
1362 | case (EXTCODE_COMPARE_SWAP): | |
1363 | if (old == arg) { | |
1364 | new = data; | |
1365 | } else { | |
1366 | new = old; | |
1367 | } | |
1368 | break; | |
1369 | case (EXTCODE_FETCH_ADD): | |
1370 | new = | |
1371 | cpu_to_be32(be32_to_cpu(data) + | |
1372 | be32_to_cpu(old)); | |
1373 | break; | |
1374 | case (EXTCODE_LITTLE_ADD): | |
1375 | new = | |
1376 | cpu_to_le32(le32_to_cpu(data) + | |
1377 | le32_to_cpu(old)); | |
1378 | break; | |
1379 | case (EXTCODE_BOUNDED_ADD): | |
1380 | if (old != arg) { | |
1381 | new = | |
1382 | cpu_to_be32(be32_to_cpu | |
1383 | (data) + | |
1384 | be32_to_cpu | |
1385 | (old)); | |
1386 | } else { | |
1387 | new = old; | |
1388 | } | |
1389 | break; | |
1390 | case (EXTCODE_WRAP_ADD): | |
1391 | if (old != arg) { | |
1392 | new = | |
1393 | cpu_to_be32(be32_to_cpu | |
1394 | (data) + | |
1395 | be32_to_cpu | |
1396 | (old)); | |
1397 | } else { | |
1398 | new = data; | |
1399 | } | |
1400 | break; | |
1401 | default: | |
1402 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1403 | printk(KERN_ERR | |
1404 | "raw1394: arm_lock FAILED " | |
1405 | "ext_tcode not allowed -> rcode_type_error\n"); | |
1406 | break; | |
1407 | } /*switch */ | |
1408 | if (rcode == -1) { | |
1409 | DBGMSG("arm_lock -> (rcode_complete)"); | |
1410 | rcode = RCODE_COMPLETE; | |
1411 | memcpy(store, &old, sizeof(*store)); | |
1412 | memcpy((arm_addr->addr_space_buffer) + | |
1413 | (addr - (arm_addr->start)), | |
1414 | &new, sizeof(*store)); | |
1415 | } | |
1416 | } | |
1417 | } else { | |
1418 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1419 | DBGMSG("arm_lock -> rcode_type_error (access denied)"); | |
1420 | } | |
1421 | } | |
1422 | if (arm_addr->notification_options & ARM_LOCK) { | |
1423 | byte_t *buf1, *buf2; | |
1424 | DBGMSG("arm_lock -> entering notification-section"); | |
54e6ecb2 | 1425 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
1426 | if (!req) { |
1427 | DBGMSG("arm_lock -> rcode_conflict_error"); | |
4a9949d7 | 1428 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1429 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1430 | The request may be retried */ | |
1431 | } | |
1432 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ | |
54e6ecb2 | 1433 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1434 | if (!(req->data)) { |
1435 | free_pending_request(req); | |
1436 | DBGMSG("arm_lock -> rcode_conflict_error"); | |
4a9949d7 | 1437 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1438 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1439 | The request may be retried */ | |
1440 | } | |
1441 | req->free_data = 1; | |
1442 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1443 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1444 | (sizeof | |
1445 | (struct | |
1446 | arm_request_response))); | |
1447 | arm_resp = | |
1448 | (struct arm_response *)((byte_t *) (arm_req) + | |
1449 | (sizeof(struct arm_request))); | |
1450 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); | |
1451 | buf2 = buf1 + 2 * sizeof(*store); | |
1452 | if ((ext_tcode == EXTCODE_FETCH_ADD) || | |
1453 | (ext_tcode == EXTCODE_LITTLE_ADD)) { | |
1454 | arm_req->buffer_length = sizeof(*store); | |
1455 | memcpy(buf1, &data, sizeof(*store)); | |
1456 | ||
1457 | } else { | |
1458 | arm_req->buffer_length = 2 * sizeof(*store); | |
1459 | memcpy(buf1, &arg, sizeof(*store)); | |
1460 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); | |
1461 | } | |
1462 | if (rcode == RCODE_COMPLETE) { | |
1463 | arm_resp->buffer_length = sizeof(*store); | |
1464 | memcpy(buf2, &old, sizeof(*store)); | |
1465 | } else { | |
1466 | arm_resp->buffer_length = 0; | |
1467 | } | |
1468 | req->file_info = fi; | |
1469 | req->req.type = RAW1394_REQ_ARM; | |
1470 | req->req.generation = get_hpsb_generation(host); | |
1471 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | | |
1472 | (ARM_LOCK & 0xFF)); | |
1473 | req->req.tag = arm_addr->arm_tag; | |
1474 | req->req.recvb = arm_addr->recvb; | |
1475 | req->req.length = size; | |
1476 | arm_req->generation = req->req.generation; | |
1477 | arm_req->extended_transaction_code = ext_tcode; | |
1478 | arm_req->destination_offset = addr; | |
1479 | arm_req->source_nodeid = nodeid; | |
1480 | arm_req->destination_nodeid = host->node_id; | |
1481 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1482 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1483 | arm_resp->response_code = rcode; | |
1484 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1485 | sizeof(struct | |
1486 | arm_request_response)); | |
1487 | arm_req_resp->response = | |
1488 | int2ptr((arm_addr->recvb) + | |
1489 | sizeof(struct arm_request_response) + | |
1490 | sizeof(struct arm_request)); | |
1491 | arm_req->buffer = | |
1492 | int2ptr((arm_addr->recvb) + | |
1493 | sizeof(struct arm_request_response) + | |
1494 | sizeof(struct arm_request) + | |
1495 | sizeof(struct arm_response)); | |
1496 | arm_resp->buffer = | |
1497 | int2ptr((arm_addr->recvb) + | |
1498 | sizeof(struct arm_request_response) + | |
1499 | sizeof(struct arm_request) + | |
1500 | sizeof(struct arm_response) + 2 * sizeof(*store)); | |
1501 | queue_complete_req(req); | |
1502 | } | |
4a9949d7 | 1503 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1504 | return (rcode); |
1505 | } | |
1506 | ||
1507 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, | |
1508 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, | |
1509 | u16 flags) | |
1510 | { | |
4a9949d7 | 1511 | unsigned long irqflags; |
1da177e4 LT |
1512 | struct pending_request *req; |
1513 | struct host_info *hi; | |
1514 | struct file_info *fi = NULL; | |
1515 | struct list_head *entry; | |
1516 | struct arm_addr *arm_addr = NULL; | |
1517 | struct arm_request *arm_req = NULL; | |
1518 | struct arm_response *arm_resp = NULL; | |
1519 | int found = 0, size = 0, rcode = -1; | |
1520 | octlet_t old, new; | |
1521 | struct arm_request_response *arm_req_resp = NULL; | |
1522 | ||
1523 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || | |
1524 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { | |
1525 | DBGMSG("arm_lock64 called by node: %X " | |
1526 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ", | |
1527 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1528 | (u32) (addr & 0xFFFFFFFF), | |
1529 | ext_tcode & 0xFF, | |
1530 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), | |
1531 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF)); | |
1532 | } else { | |
1533 | DBGMSG("arm_lock64 called by node: %X " | |
1534 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: " | |
1535 | "%8.8X %8.8X ", | |
1536 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1537 | (u32) (addr & 0xFFFFFFFF), | |
1538 | ext_tcode & 0xFF, | |
1539 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), | |
1540 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF), | |
1541 | (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF), | |
1542 | (u32) (be64_to_cpu(arg) & 0xFFFFFFFF)); | |
1543 | } | |
4a9949d7 | 1544 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1545 | hi = find_host_info(host); /* search addressentry in file_info's for host */ |
1546 | if (hi != NULL) { | |
1547 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1548 | entry = fi->addr_list.next; | |
1549 | while (entry != &(fi->addr_list)) { | |
1550 | arm_addr = | |
1551 | list_entry(entry, struct arm_addr, | |
1552 | addr_list); | |
1553 | if (((arm_addr->start) <= (addr)) | |
1554 | && ((arm_addr->end) >= | |
1555 | (addr + sizeof(*store)))) { | |
1556 | found = 1; | |
1557 | break; | |
1558 | } | |
1559 | entry = entry->next; | |
1560 | } | |
1561 | if (found) { | |
1562 | break; | |
1563 | } | |
1564 | } | |
1565 | } | |
1566 | rcode = -1; | |
1567 | if (!found) { | |
1568 | printk(KERN_ERR | |
1569 | "raw1394: arm_lock64 FAILED addr_entry not found" | |
1570 | " -> rcode_address_error\n"); | |
4a9949d7 | 1571 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1572 | return (RCODE_ADDRESS_ERROR); |
1573 | } else { | |
1574 | DBGMSG("arm_lock64 addr_entry FOUND"); | |
1575 | } | |
1576 | if (rcode == -1) { | |
1577 | if (arm_addr->access_rights & ARM_LOCK) { | |
1578 | if (!(arm_addr->client_transactions & ARM_LOCK)) { | |
1579 | memcpy(&old, | |
1580 | (arm_addr->addr_space_buffer) + (addr - | |
1581 | (arm_addr-> | |
1582 | start)), | |
1583 | sizeof(old)); | |
1584 | switch (ext_tcode) { | |
1585 | case (EXTCODE_MASK_SWAP): | |
1586 | new = data | (old & ~arg); | |
1587 | break; | |
1588 | case (EXTCODE_COMPARE_SWAP): | |
1589 | if (old == arg) { | |
1590 | new = data; | |
1591 | } else { | |
1592 | new = old; | |
1593 | } | |
1594 | break; | |
1595 | case (EXTCODE_FETCH_ADD): | |
1596 | new = | |
1597 | cpu_to_be64(be64_to_cpu(data) + | |
1598 | be64_to_cpu(old)); | |
1599 | break; | |
1600 | case (EXTCODE_LITTLE_ADD): | |
1601 | new = | |
1602 | cpu_to_le64(le64_to_cpu(data) + | |
1603 | le64_to_cpu(old)); | |
1604 | break; | |
1605 | case (EXTCODE_BOUNDED_ADD): | |
1606 | if (old != arg) { | |
1607 | new = | |
1608 | cpu_to_be64(be64_to_cpu | |
1609 | (data) + | |
1610 | be64_to_cpu | |
1611 | (old)); | |
1612 | } else { | |
1613 | new = old; | |
1614 | } | |
1615 | break; | |
1616 | case (EXTCODE_WRAP_ADD): | |
1617 | if (old != arg) { | |
1618 | new = | |
1619 | cpu_to_be64(be64_to_cpu | |
1620 | (data) + | |
1621 | be64_to_cpu | |
1622 | (old)); | |
1623 | } else { | |
1624 | new = data; | |
1625 | } | |
1626 | break; | |
1627 | default: | |
1628 | printk(KERN_ERR | |
1629 | "raw1394: arm_lock64 FAILED " | |
1630 | "ext_tcode not allowed -> rcode_type_error\n"); | |
1631 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1632 | break; | |
1633 | } /*switch */ | |
1634 | if (rcode == -1) { | |
1635 | DBGMSG | |
1636 | ("arm_lock64 -> (rcode_complete)"); | |
1637 | rcode = RCODE_COMPLETE; | |
1638 | memcpy(store, &old, sizeof(*store)); | |
1639 | memcpy((arm_addr->addr_space_buffer) + | |
1640 | (addr - (arm_addr->start)), | |
1641 | &new, sizeof(*store)); | |
1642 | } | |
1643 | } | |
1644 | } else { | |
1645 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1646 | DBGMSG | |
1647 | ("arm_lock64 -> rcode_type_error (access denied)"); | |
1648 | } | |
1649 | } | |
1650 | if (arm_addr->notification_options & ARM_LOCK) { | |
1651 | byte_t *buf1, *buf2; | |
1652 | DBGMSG("arm_lock64 -> entering notification-section"); | |
54e6ecb2 | 1653 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 | 1654 | if (!req) { |
4a9949d7 | 1655 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1656 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
1657 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. | |
1658 | The request may be retried */ | |
1659 | } | |
1660 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ | |
54e6ecb2 | 1661 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1662 | if (!(req->data)) { |
1663 | free_pending_request(req); | |
4a9949d7 | 1664 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1665 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
1666 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. | |
1667 | The request may be retried */ | |
1668 | } | |
1669 | req->free_data = 1; | |
1670 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1671 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1672 | (sizeof | |
1673 | (struct | |
1674 | arm_request_response))); | |
1675 | arm_resp = | |
1676 | (struct arm_response *)((byte_t *) (arm_req) + | |
1677 | (sizeof(struct arm_request))); | |
1678 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); | |
1679 | buf2 = buf1 + 2 * sizeof(*store); | |
1680 | if ((ext_tcode == EXTCODE_FETCH_ADD) || | |
1681 | (ext_tcode == EXTCODE_LITTLE_ADD)) { | |
1682 | arm_req->buffer_length = sizeof(*store); | |
1683 | memcpy(buf1, &data, sizeof(*store)); | |
1684 | ||
1685 | } else { | |
1686 | arm_req->buffer_length = 2 * sizeof(*store); | |
1687 | memcpy(buf1, &arg, sizeof(*store)); | |
1688 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); | |
1689 | } | |
1690 | if (rcode == RCODE_COMPLETE) { | |
1691 | arm_resp->buffer_length = sizeof(*store); | |
1692 | memcpy(buf2, &old, sizeof(*store)); | |
1693 | } else { | |
1694 | arm_resp->buffer_length = 0; | |
1695 | } | |
1696 | req->file_info = fi; | |
1697 | req->req.type = RAW1394_REQ_ARM; | |
1698 | req->req.generation = get_hpsb_generation(host); | |
1699 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | | |
1700 | (ARM_LOCK & 0xFF)); | |
1701 | req->req.tag = arm_addr->arm_tag; | |
1702 | req->req.recvb = arm_addr->recvb; | |
1703 | req->req.length = size; | |
1704 | arm_req->generation = req->req.generation; | |
1705 | arm_req->extended_transaction_code = ext_tcode; | |
1706 | arm_req->destination_offset = addr; | |
1707 | arm_req->source_nodeid = nodeid; | |
1708 | arm_req->destination_nodeid = host->node_id; | |
1709 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1710 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1711 | arm_resp->response_code = rcode; | |
1712 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1713 | sizeof(struct | |
1714 | arm_request_response)); | |
1715 | arm_req_resp->response = | |
1716 | int2ptr((arm_addr->recvb) + | |
1717 | sizeof(struct arm_request_response) + | |
1718 | sizeof(struct arm_request)); | |
1719 | arm_req->buffer = | |
1720 | int2ptr((arm_addr->recvb) + | |
1721 | sizeof(struct arm_request_response) + | |
1722 | sizeof(struct arm_request) + | |
1723 | sizeof(struct arm_response)); | |
1724 | arm_resp->buffer = | |
1725 | int2ptr((arm_addr->recvb) + | |
1726 | sizeof(struct arm_request_response) + | |
1727 | sizeof(struct arm_request) + | |
1728 | sizeof(struct arm_response) + 2 * sizeof(*store)); | |
1729 | queue_complete_req(req); | |
1730 | } | |
4a9949d7 | 1731 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1732 | return (rcode); |
1733 | } | |
1734 | ||
1735 | static int arm_register(struct file_info *fi, struct pending_request *req) | |
1736 | { | |
1737 | int retval; | |
1738 | struct arm_addr *addr; | |
1739 | struct host_info *hi; | |
1740 | struct file_info *fi_hlp = NULL; | |
1741 | struct list_head *entry; | |
1742 | struct arm_addr *arm_addr = NULL; | |
1743 | int same_host, another_host; | |
1744 | unsigned long flags; | |
1745 | ||
1746 | DBGMSG("arm_register called " | |
1747 | "addr(Offset): %8.8x %8.8x length: %u " | |
1748 | "rights: %2.2X notify: %2.2X " | |
1749 | "max_blk_len: %4.4X", | |
1750 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1751 | (u32) (req->req.address & 0xFFFFFFFF), | |
1752 | req->req.length, ((req->req.misc >> 8) & 0xFF), | |
1753 | (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF)); | |
1754 | /* check addressrange */ | |
1755 | if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) || | |
1756 | (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) != | |
1757 | 0)) { | |
1758 | req->req.length = 0; | |
1759 | return (-EINVAL); | |
1760 | } | |
1761 | /* addr-list-entry for fileinfo */ | |
e94b1766 | 1762 | addr = kmalloc(sizeof(*addr), GFP_KERNEL); |
1da177e4 LT |
1763 | if (!addr) { |
1764 | req->req.length = 0; | |
1765 | return (-ENOMEM); | |
1766 | } | |
1767 | /* allocation of addr_space_buffer */ | |
8551158a | 1768 | addr->addr_space_buffer = vmalloc(req->req.length); |
1da177e4 LT |
1769 | if (!(addr->addr_space_buffer)) { |
1770 | kfree(addr); | |
1771 | req->req.length = 0; | |
1772 | return (-ENOMEM); | |
1773 | } | |
1774 | /* initialization of addr_space_buffer */ | |
1775 | if ((req->req.sendb) == (unsigned long)NULL) { | |
1776 | /* init: set 0 */ | |
1777 | memset(addr->addr_space_buffer, 0, req->req.length); | |
1778 | } else { | |
1779 | /* init: user -> kernel */ | |
1780 | if (copy_from_user | |
1781 | (addr->addr_space_buffer, int2ptr(req->req.sendb), | |
1782 | req->req.length)) { | |
1783 | vfree(addr->addr_space_buffer); | |
1784 | kfree(addr); | |
1785 | return (-EFAULT); | |
1786 | } | |
1787 | } | |
1788 | INIT_LIST_HEAD(&addr->addr_list); | |
1789 | addr->arm_tag = req->req.tag; | |
1790 | addr->start = req->req.address; | |
1791 | addr->end = req->req.address + req->req.length; | |
1792 | addr->access_rights = (u8) (req->req.misc & 0x0F); | |
1793 | addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F); | |
1794 | addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F); | |
1795 | addr->access_rights |= addr->client_transactions; | |
1796 | addr->notification_options |= addr->client_transactions; | |
1797 | addr->recvb = req->req.recvb; | |
1798 | addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF); | |
3253b669 | 1799 | |
1da177e4 LT |
1800 | spin_lock_irqsave(&host_info_lock, flags); |
1801 | hi = find_host_info(fi->host); | |
1802 | same_host = 0; | |
1803 | another_host = 0; | |
1804 | /* same host with address-entry containing same addressrange ? */ | |
1805 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1806 | entry = fi_hlp->addr_list.next; | |
1807 | while (entry != &(fi_hlp->addr_list)) { | |
1808 | arm_addr = | |
1809 | list_entry(entry, struct arm_addr, addr_list); | |
1810 | if ((arm_addr->start == addr->start) | |
1811 | && (arm_addr->end == addr->end)) { | |
1812 | DBGMSG("same host ownes same " | |
1813 | "addressrange -> EALREADY"); | |
1814 | same_host = 1; | |
1815 | break; | |
1816 | } | |
1817 | entry = entry->next; | |
1818 | } | |
1819 | if (same_host) { | |
1820 | break; | |
1821 | } | |
1822 | } | |
1823 | if (same_host) { | |
1824 | /* addressrange occupied by same host */ | |
3253b669 | 1825 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1826 | vfree(addr->addr_space_buffer); |
1827 | kfree(addr); | |
1da177e4 LT |
1828 | return (-EALREADY); |
1829 | } | |
1830 | /* another host with valid address-entry containing same addressrange */ | |
1831 | list_for_each_entry(hi, &host_info_list, list) { | |
1832 | if (hi->host != fi->host) { | |
1833 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1834 | entry = fi_hlp->addr_list.next; | |
1835 | while (entry != &(fi_hlp->addr_list)) { | |
1836 | arm_addr = | |
1837 | list_entry(entry, struct arm_addr, | |
1838 | addr_list); | |
1839 | if ((arm_addr->start == addr->start) | |
1840 | && (arm_addr->end == addr->end)) { | |
1841 | DBGMSG | |
1842 | ("another host ownes same " | |
1843 | "addressrange"); | |
1844 | another_host = 1; | |
1845 | break; | |
1846 | } | |
1847 | entry = entry->next; | |
1848 | } | |
1849 | if (another_host) { | |
1850 | break; | |
1851 | } | |
1852 | } | |
1853 | } | |
1854 | } | |
3253b669 SR |
1855 | spin_unlock_irqrestore(&host_info_lock, flags); |
1856 | ||
1da177e4 LT |
1857 | if (another_host) { |
1858 | DBGMSG("another hosts entry is valid -> SUCCESS"); | |
1859 | if (copy_to_user(int2ptr(req->req.recvb), | |
1860 | &addr->start, sizeof(u64))) { | |
1861 | printk(KERN_ERR "raw1394: arm_register failed " | |
1862 | " address-range-entry is invalid -> EFAULT !!!\n"); | |
1863 | vfree(addr->addr_space_buffer); | |
1864 | kfree(addr); | |
1da177e4 LT |
1865 | return (-EFAULT); |
1866 | } | |
1867 | free_pending_request(req); /* immediate success or fail */ | |
1868 | /* INSERT ENTRY */ | |
3253b669 | 1869 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 LT |
1870 | list_add_tail(&addr->addr_list, &fi->addr_list); |
1871 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1872 | return sizeof(struct raw1394_request); | |
1873 | } | |
1874 | retval = | |
1875 | hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops, | |
1876 | req->req.address, | |
1877 | req->req.address + req->req.length); | |
1878 | if (retval) { | |
1879 | /* INSERT ENTRY */ | |
3253b669 | 1880 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 1881 | list_add_tail(&addr->addr_list, &fi->addr_list); |
3253b669 | 1882 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1883 | } else { |
1884 | DBGMSG("arm_register failed errno: %d \n", retval); | |
1885 | vfree(addr->addr_space_buffer); | |
1886 | kfree(addr); | |
1da177e4 LT |
1887 | return (-EALREADY); |
1888 | } | |
1da177e4 LT |
1889 | free_pending_request(req); /* immediate success or fail */ |
1890 | return sizeof(struct raw1394_request); | |
1891 | } | |
1892 | ||
1893 | static int arm_unregister(struct file_info *fi, struct pending_request *req) | |
1894 | { | |
1895 | int found = 0; | |
1896 | int retval = 0; | |
1897 | struct list_head *entry; | |
1898 | struct arm_addr *addr = NULL; | |
1899 | struct host_info *hi; | |
1900 | struct file_info *fi_hlp = NULL; | |
1901 | struct arm_addr *arm_addr = NULL; | |
1902 | int another_host; | |
1903 | unsigned long flags; | |
1904 | ||
1905 | DBGMSG("arm_Unregister called addr(Offset): " | |
1906 | "%8.8x %8.8x", | |
1907 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1908 | (u32) (req->req.address & 0xFFFFFFFF)); | |
1909 | spin_lock_irqsave(&host_info_lock, flags); | |
1910 | /* get addr */ | |
1911 | entry = fi->addr_list.next; | |
1912 | while (entry != &(fi->addr_list)) { | |
1913 | addr = list_entry(entry, struct arm_addr, addr_list); | |
1914 | if (addr->start == req->req.address) { | |
1915 | found = 1; | |
1916 | break; | |
1917 | } | |
1918 | entry = entry->next; | |
1919 | } | |
1920 | if (!found) { | |
1921 | DBGMSG("arm_Unregister addr not found"); | |
1922 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1923 | return (-EINVAL); | |
1924 | } | |
1925 | DBGMSG("arm_Unregister addr found"); | |
1926 | another_host = 0; | |
1927 | /* another host with valid address-entry containing | |
1928 | same addressrange */ | |
1929 | list_for_each_entry(hi, &host_info_list, list) { | |
1930 | if (hi->host != fi->host) { | |
1931 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1932 | entry = fi_hlp->addr_list.next; | |
1933 | while (entry != &(fi_hlp->addr_list)) { | |
1934 | arm_addr = list_entry(entry, | |
1935 | struct arm_addr, | |
1936 | addr_list); | |
1937 | if (arm_addr->start == addr->start) { | |
1938 | DBGMSG("another host ownes " | |
1939 | "same addressrange"); | |
1940 | another_host = 1; | |
1941 | break; | |
1942 | } | |
1943 | entry = entry->next; | |
1944 | } | |
1945 | if (another_host) { | |
1946 | break; | |
1947 | } | |
1948 | } | |
1949 | } | |
1950 | } | |
1951 | if (another_host) { | |
1952 | DBGMSG("delete entry from list -> success"); | |
1953 | list_del(&addr->addr_list); | |
3253b669 | 1954 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1955 | vfree(addr->addr_space_buffer); |
1956 | kfree(addr); | |
1957 | free_pending_request(req); /* immediate success or fail */ | |
1da177e4 LT |
1958 | return sizeof(struct raw1394_request); |
1959 | } | |
1960 | retval = | |
1961 | hpsb_unregister_addrspace(&raw1394_highlevel, fi->host, | |
1962 | addr->start); | |
1963 | if (!retval) { | |
1964 | printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n"); | |
1965 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1966 | return (-EINVAL); | |
1967 | } | |
1968 | DBGMSG("delete entry from list -> success"); | |
1969 | list_del(&addr->addr_list); | |
1970 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1971 | vfree(addr->addr_space_buffer); | |
1972 | kfree(addr); | |
1973 | free_pending_request(req); /* immediate success or fail */ | |
1974 | return sizeof(struct raw1394_request); | |
1975 | } | |
1976 | ||
1977 | /* Copy data from ARM buffer(s) to user buffer. */ | |
1978 | static int arm_get_buf(struct file_info *fi, struct pending_request *req) | |
1979 | { | |
1980 | struct arm_addr *arm_addr = NULL; | |
1981 | unsigned long flags; | |
1982 | unsigned long offset; | |
1983 | ||
1984 | struct list_head *entry; | |
1985 | ||
1986 | DBGMSG("arm_get_buf " | |
1987 | "addr(Offset): %04X %08X length: %u", | |
1988 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1989 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); | |
1990 | ||
1991 | spin_lock_irqsave(&host_info_lock, flags); | |
1992 | entry = fi->addr_list.next; | |
1993 | while (entry != &(fi->addr_list)) { | |
1994 | arm_addr = list_entry(entry, struct arm_addr, addr_list); | |
1995 | if ((arm_addr->start <= req->req.address) && | |
1996 | (arm_addr->end > req->req.address)) { | |
1997 | if (req->req.address + req->req.length <= arm_addr->end) { | |
1998 | offset = req->req.address - arm_addr->start; | |
3253b669 | 1999 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2000 | |
2001 | DBGMSG | |
2002 | ("arm_get_buf copy_to_user( %08X, %p, %u )", | |
2003 | (u32) req->req.recvb, | |
2004 | arm_addr->addr_space_buffer + offset, | |
2005 | (u32) req->req.length); | |
1da177e4 LT |
2006 | if (copy_to_user |
2007 | (int2ptr(req->req.recvb), | |
2008 | arm_addr->addr_space_buffer + offset, | |
3253b669 | 2009 | req->req.length)) |
1da177e4 | 2010 | return (-EFAULT); |
1da177e4 | 2011 | |
1da177e4 LT |
2012 | /* We have to free the request, because we |
2013 | * queue no response, and therefore nobody | |
2014 | * will free it. */ | |
2015 | free_pending_request(req); | |
2016 | return sizeof(struct raw1394_request); | |
2017 | } else { | |
2018 | DBGMSG("arm_get_buf request exceeded mapping"); | |
2019 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2020 | return (-EINVAL); | |
2021 | } | |
2022 | } | |
2023 | entry = entry->next; | |
2024 | } | |
2025 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2026 | return (-EINVAL); | |
2027 | } | |
2028 | ||
2029 | /* Copy data from user buffer to ARM buffer(s). */ | |
2030 | static int arm_set_buf(struct file_info *fi, struct pending_request *req) | |
2031 | { | |
2032 | struct arm_addr *arm_addr = NULL; | |
2033 | unsigned long flags; | |
2034 | unsigned long offset; | |
2035 | ||
2036 | struct list_head *entry; | |
2037 | ||
2038 | DBGMSG("arm_set_buf " | |
2039 | "addr(Offset): %04X %08X length: %u", | |
2040 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
2041 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); | |
2042 | ||
2043 | spin_lock_irqsave(&host_info_lock, flags); | |
2044 | entry = fi->addr_list.next; | |
2045 | while (entry != &(fi->addr_list)) { | |
2046 | arm_addr = list_entry(entry, struct arm_addr, addr_list); | |
2047 | if ((arm_addr->start <= req->req.address) && | |
2048 | (arm_addr->end > req->req.address)) { | |
2049 | if (req->req.address + req->req.length <= arm_addr->end) { | |
2050 | offset = req->req.address - arm_addr->start; | |
3253b669 | 2051 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2052 | |
2053 | DBGMSG | |
2054 | ("arm_set_buf copy_from_user( %p, %08X, %u )", | |
2055 | arm_addr->addr_space_buffer + offset, | |
2056 | (u32) req->req.sendb, | |
2057 | (u32) req->req.length); | |
1da177e4 LT |
2058 | if (copy_from_user |
2059 | (arm_addr->addr_space_buffer + offset, | |
2060 | int2ptr(req->req.sendb), | |
3253b669 | 2061 | req->req.length)) |
1da177e4 | 2062 | return (-EFAULT); |
1da177e4 | 2063 | |
3253b669 SR |
2064 | /* We have to free the request, because we |
2065 | * queue no response, and therefore nobody | |
2066 | * will free it. */ | |
2067 | free_pending_request(req); | |
1da177e4 LT |
2068 | return sizeof(struct raw1394_request); |
2069 | } else { | |
2070 | DBGMSG("arm_set_buf request exceeded mapping"); | |
2071 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2072 | return (-EINVAL); | |
2073 | } | |
2074 | } | |
2075 | entry = entry->next; | |
2076 | } | |
2077 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2078 | return (-EINVAL); | |
2079 | } | |
2080 | ||
2081 | static int reset_notification(struct file_info *fi, struct pending_request *req) | |
2082 | { | |
2083 | DBGMSG("reset_notification called - switch %s ", | |
2084 | (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON"); | |
2085 | if ((req->req.misc == RAW1394_NOTIFY_OFF) || | |
2086 | (req->req.misc == RAW1394_NOTIFY_ON)) { | |
2087 | fi->notification = (u8) req->req.misc; | |
2088 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2089 | return sizeof(struct raw1394_request); | |
2090 | } | |
2091 | /* error EINVAL (22) invalid argument */ | |
2092 | return (-EINVAL); | |
2093 | } | |
2094 | ||
2095 | static int write_phypacket(struct file_info *fi, struct pending_request *req) | |
2096 | { | |
2097 | struct hpsb_packet *packet = NULL; | |
2098 | int retval = 0; | |
2099 | quadlet_t data; | |
4a9949d7 | 2100 | unsigned long flags; |
1da177e4 LT |
2101 | |
2102 | data = be32_to_cpu((u32) req->req.sendb); | |
2103 | DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data); | |
2104 | packet = hpsb_make_phypacket(fi->host, data); | |
2105 | if (!packet) | |
2106 | return -ENOMEM; | |
2107 | req->req.length = 0; | |
2108 | req->packet = packet; | |
2109 | hpsb_set_packet_complete_task(packet, | |
2110 | (void (*)(void *))queue_complete_cb, req); | |
4a9949d7 | 2111 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 2112 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 2113 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
2114 | packet->generation = req->req.generation; |
2115 | retval = hpsb_send_packet(packet); | |
2116 | DBGMSG("write_phypacket send_packet called => retval: %d ", retval); | |
2117 | if (retval < 0) { | |
2118 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
2119 | req->req.length = 0; | |
2120 | queue_complete_req(req); | |
2121 | } | |
2122 | return sizeof(struct raw1394_request); | |
2123 | } | |
2124 | ||
2125 | static int get_config_rom(struct file_info *fi, struct pending_request *req) | |
2126 | { | |
2127 | int ret = sizeof(struct raw1394_request); | |
e94b1766 | 2128 | quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL); |
1da177e4 LT |
2129 | int status; |
2130 | ||
2131 | if (!data) | |
2132 | return -ENOMEM; | |
2133 | ||
2134 | status = | |
2135 | csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET, | |
2136 | data, req->req.length); | |
2137 | if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length)) | |
2138 | ret = -EFAULT; | |
2139 | if (copy_to_user | |
2140 | (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len, | |
2141 | sizeof(fi->host->csr.rom->cache_head->len))) | |
2142 | ret = -EFAULT; | |
2143 | if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation, | |
2144 | sizeof(fi->host->csr.generation))) | |
2145 | ret = -EFAULT; | |
2146 | if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status))) | |
2147 | ret = -EFAULT; | |
2148 | kfree(data); | |
2149 | if (ret >= 0) { | |
2150 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2151 | } | |
2152 | return ret; | |
2153 | } | |
2154 | ||
2155 | static int update_config_rom(struct file_info *fi, struct pending_request *req) | |
2156 | { | |
2157 | int ret = sizeof(struct raw1394_request); | |
e94b1766 | 2158 | quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL); |
1da177e4 LT |
2159 | if (!data) |
2160 | return -ENOMEM; | |
2161 | if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) { | |
2162 | ret = -EFAULT; | |
2163 | } else { | |
2164 | int status = hpsb_update_config_rom(fi->host, | |
2165 | data, req->req.length, | |
2166 | (unsigned char)req->req. | |
2167 | misc); | |
2168 | if (copy_to_user | |
2169 | (int2ptr(req->req.recvb), &status, sizeof(status))) | |
2170 | ret = -ENOMEM; | |
2171 | } | |
2172 | kfree(data); | |
2173 | if (ret >= 0) { | |
2174 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2175 | fi->cfgrom_upd = 1; | |
2176 | } | |
2177 | return ret; | |
2178 | } | |
2179 | ||
2180 | static int modify_config_rom(struct file_info *fi, struct pending_request *req) | |
2181 | { | |
2182 | struct csr1212_keyval *kv; | |
2183 | struct csr1212_csr_rom_cache *cache; | |
2184 | struct csr1212_dentry *dentry; | |
2185 | u32 dr; | |
2186 | int ret = 0; | |
2187 | ||
2188 | if (req->req.misc == ~0) { | |
2189 | if (req->req.length == 0) | |
2190 | return -EINVAL; | |
2191 | ||
2192 | /* Find an unused slot */ | |
2193 | for (dr = 0; | |
2194 | dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr]; | |
2195 | dr++) ; | |
2196 | ||
2197 | if (dr == RAW1394_MAX_USER_CSR_DIRS) | |
2198 | return -ENOMEM; | |
2199 | ||
2200 | fi->csr1212_dirs[dr] = | |
2201 | csr1212_new_directory(CSR1212_KV_ID_VENDOR); | |
2202 | if (!fi->csr1212_dirs[dr]) | |
2203 | return -ENOMEM; | |
2204 | } else { | |
2205 | dr = req->req.misc; | |
2206 | if (!fi->csr1212_dirs[dr]) | |
2207 | return -EINVAL; | |
2208 | ||
2209 | /* Delete old stuff */ | |
2210 | for (dentry = | |
2211 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2212 | dentry; dentry = dentry->next) { | |
2213 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2214 | root_kv, | |
2215 | dentry->kv); | |
2216 | } | |
2217 | ||
2218 | if (req->req.length == 0) { | |
2219 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2220 | fi->csr1212_dirs[dr] = NULL; | |
2221 | ||
2222 | hpsb_update_config_rom_image(fi->host); | |
2223 | free_pending_request(req); | |
2224 | return sizeof(struct raw1394_request); | |
2225 | } | |
2226 | } | |
2227 | ||
2228 | cache = csr1212_rom_cache_malloc(0, req->req.length); | |
2229 | if (!cache) { | |
2230 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2231 | fi->csr1212_dirs[dr] = NULL; | |
2232 | return -ENOMEM; | |
2233 | } | |
2234 | ||
8551158a | 2235 | cache->filled_head = kmalloc(sizeof(*cache->filled_head), GFP_KERNEL); |
1da177e4 LT |
2236 | if (!cache->filled_head) { |
2237 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2238 | fi->csr1212_dirs[dr] = NULL; | |
2239 | CSR1212_FREE(cache); | |
2240 | return -ENOMEM; | |
2241 | } | |
2242 | cache->filled_tail = cache->filled_head; | |
2243 | ||
2244 | if (copy_from_user(cache->data, int2ptr(req->req.sendb), | |
2245 | req->req.length)) { | |
2246 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2247 | fi->csr1212_dirs[dr] = NULL; | |
1da177e4 LT |
2248 | ret = -EFAULT; |
2249 | } else { | |
2250 | cache->len = req->req.length; | |
2251 | cache->filled_head->offset_start = 0; | |
2252 | cache->filled_head->offset_end = cache->size - 1; | |
2253 | ||
2254 | cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr]; | |
2255 | ||
2256 | ret = CSR1212_SUCCESS; | |
2257 | /* parse all the items */ | |
2258 | for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv; | |
2259 | kv = kv->next) { | |
2260 | ret = csr1212_parse_keyval(kv, cache); | |
2261 | } | |
2262 | ||
2263 | /* attach top level items to the root directory */ | |
2264 | for (dentry = | |
2265 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2266 | ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) { | |
2267 | ret = | |
2268 | csr1212_attach_keyval_to_directory(fi->host->csr. | |
2269 | rom->root_kv, | |
2270 | dentry->kv); | |
2271 | } | |
2272 | ||
2273 | if (ret == CSR1212_SUCCESS) { | |
2274 | ret = hpsb_update_config_rom_image(fi->host); | |
2275 | ||
2276 | if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb), | |
2277 | &dr, sizeof(dr))) { | |
2278 | ret = -ENOMEM; | |
2279 | } | |
2280 | } | |
2281 | } | |
2282 | kfree(cache->filled_head); | |
b12479dd | 2283 | CSR1212_FREE(cache); |
1da177e4 LT |
2284 | |
2285 | if (ret >= 0) { | |
2286 | /* we have to free the request, because we queue no response, | |
2287 | * and therefore nobody will free it */ | |
2288 | free_pending_request(req); | |
2289 | return sizeof(struct raw1394_request); | |
2290 | } else { | |
2291 | for (dentry = | |
2292 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2293 | dentry; dentry = dentry->next) { | |
2294 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2295 | root_kv, | |
2296 | dentry->kv); | |
2297 | } | |
2298 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2299 | fi->csr1212_dirs[dr] = NULL; | |
2300 | return ret; | |
2301 | } | |
2302 | } | |
2303 | ||
2304 | static int state_connected(struct file_info *fi, struct pending_request *req) | |
2305 | { | |
2306 | int node = req->req.address >> 48; | |
2307 | ||
2308 | req->req.error = RAW1394_ERROR_NONE; | |
2309 | ||
2310 | switch (req->req.type) { | |
2311 | ||
2312 | case RAW1394_REQ_ECHO: | |
2313 | queue_complete_req(req); | |
2314 | return sizeof(struct raw1394_request); | |
2315 | ||
2316 | case RAW1394_REQ_ISO_SEND: | |
9868e0ec | 2317 | print_old_iso_deprecation(); |
1da177e4 LT |
2318 | return handle_iso_send(fi, req, node); |
2319 | ||
2320 | case RAW1394_REQ_ARM_REGISTER: | |
2321 | return arm_register(fi, req); | |
2322 | ||
2323 | case RAW1394_REQ_ARM_UNREGISTER: | |
2324 | return arm_unregister(fi, req); | |
2325 | ||
2326 | case RAW1394_REQ_ARM_SET_BUF: | |
2327 | return arm_set_buf(fi, req); | |
2328 | ||
2329 | case RAW1394_REQ_ARM_GET_BUF: | |
2330 | return arm_get_buf(fi, req); | |
2331 | ||
2332 | case RAW1394_REQ_RESET_NOTIFY: | |
2333 | return reset_notification(fi, req); | |
2334 | ||
2335 | case RAW1394_REQ_ISO_LISTEN: | |
9868e0ec | 2336 | print_old_iso_deprecation(); |
1da177e4 LT |
2337 | handle_iso_listen(fi, req); |
2338 | return sizeof(struct raw1394_request); | |
2339 | ||
2340 | case RAW1394_REQ_FCP_LISTEN: | |
2341 | handle_fcp_listen(fi, req); | |
2342 | return sizeof(struct raw1394_request); | |
2343 | ||
2344 | case RAW1394_REQ_RESET_BUS: | |
2345 | if (req->req.misc == RAW1394_LONG_RESET) { | |
2346 | DBGMSG("busreset called (type: LONG)"); | |
2347 | hpsb_reset_bus(fi->host, LONG_RESET); | |
2348 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2349 | return sizeof(struct raw1394_request); | |
2350 | } | |
2351 | if (req->req.misc == RAW1394_SHORT_RESET) { | |
2352 | DBGMSG("busreset called (type: SHORT)"); | |
2353 | hpsb_reset_bus(fi->host, SHORT_RESET); | |
2354 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2355 | return sizeof(struct raw1394_request); | |
2356 | } | |
2357 | /* error EINVAL (22) invalid argument */ | |
2358 | return (-EINVAL); | |
2359 | case RAW1394_REQ_GET_ROM: | |
2360 | return get_config_rom(fi, req); | |
2361 | ||
2362 | case RAW1394_REQ_UPDATE_ROM: | |
2363 | return update_config_rom(fi, req); | |
2364 | ||
2365 | case RAW1394_REQ_MODIFY_ROM: | |
2366 | return modify_config_rom(fi, req); | |
2367 | } | |
2368 | ||
2369 | if (req->req.generation != get_hpsb_generation(fi->host)) { | |
2370 | req->req.error = RAW1394_ERROR_GENERATION; | |
2371 | req->req.generation = get_hpsb_generation(fi->host); | |
2372 | req->req.length = 0; | |
2373 | queue_complete_req(req); | |
2374 | return sizeof(struct raw1394_request); | |
2375 | } | |
2376 | ||
2377 | switch (req->req.type) { | |
2378 | case RAW1394_REQ_PHYPACKET: | |
2379 | return write_phypacket(fi, req); | |
2380 | case RAW1394_REQ_ASYNC_SEND: | |
2381 | return handle_async_send(fi, req); | |
2382 | } | |
2383 | ||
2384 | if (req->req.length == 0) { | |
2385 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
2386 | queue_complete_req(req); | |
2387 | return sizeof(struct raw1394_request); | |
2388 | } | |
2389 | ||
2390 | return handle_async_request(fi, req, node); | |
2391 | } | |
2392 | ||
2393 | static ssize_t raw1394_write(struct file *file, const char __user * buffer, | |
2394 | size_t count, loff_t * offset_is_ignored) | |
2395 | { | |
2396 | struct file_info *fi = (struct file_info *)file->private_data; | |
2397 | struct pending_request *req; | |
2398 | ssize_t retval = 0; | |
2399 | ||
4bc32c4d | 2400 | #ifdef CONFIG_COMPAT |
7597028a BC |
2401 | if (count == sizeof(struct compat_raw1394_req) && |
2402 | sizeof(struct compat_raw1394_req) != | |
2403 | sizeof(struct raw1394_request)) { | |
4bc32c4d AK |
2404 | buffer = raw1394_compat_write(buffer); |
2405 | if (IS_ERR(buffer)) | |
2406 | return PTR_ERR(buffer); | |
2407 | } else | |
2408 | #endif | |
1da177e4 LT |
2409 | if (count != sizeof(struct raw1394_request)) { |
2410 | return -EINVAL; | |
2411 | } | |
2412 | ||
2413 | req = alloc_pending_request(); | |
2414 | if (req == NULL) { | |
2415 | return -ENOMEM; | |
2416 | } | |
2417 | req->file_info = fi; | |
2418 | ||
2419 | if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) { | |
2420 | free_pending_request(req); | |
2421 | return -EFAULT; | |
2422 | } | |
2423 | ||
2424 | switch (fi->state) { | |
2425 | case opened: | |
2426 | retval = state_opened(fi, req); | |
2427 | break; | |
2428 | ||
2429 | case initialized: | |
2430 | retval = state_initialized(fi, req); | |
2431 | break; | |
2432 | ||
2433 | case connected: | |
2434 | retval = state_connected(fi, req); | |
2435 | break; | |
2436 | } | |
2437 | ||
2438 | if (retval < 0) { | |
2439 | free_pending_request(req); | |
2440 | } | |
2441 | ||
2442 | return retval; | |
2443 | } | |
2444 | ||
2445 | /* rawiso operations */ | |
2446 | ||
2447 | /* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the | |
2448 | * completion queue (reqlists_lock must be taken) */ | |
2449 | static inline int __rawiso_event_in_queue(struct file_info *fi) | |
2450 | { | |
2451 | struct pending_request *req; | |
2452 | ||
2453 | list_for_each_entry(req, &fi->req_complete, list) | |
2454 | if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY) | |
2455 | return 1; | |
2456 | ||
2457 | return 0; | |
2458 | } | |
2459 | ||
2460 | /* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */ | |
2461 | static void queue_rawiso_event(struct file_info *fi) | |
2462 | { | |
2463 | unsigned long flags; | |
2464 | ||
2465 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
2466 | ||
2467 | /* only one ISO activity event may be in the queue */ | |
2468 | if (!__rawiso_event_in_queue(fi)) { | |
2469 | struct pending_request *req = | |
54e6ecb2 | 2470 | __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
2471 | |
2472 | if (req) { | |
2473 | req->file_info = fi; | |
2474 | req->req.type = RAW1394_REQ_RAWISO_ACTIVITY; | |
2475 | req->req.generation = get_hpsb_generation(fi->host); | |
2476 | __queue_complete_req(req); | |
2477 | } else { | |
2478 | /* on allocation failure, signal an overflow */ | |
2479 | if (fi->iso_handle) { | |
2480 | atomic_inc(&fi->iso_handle->overflows); | |
2481 | } | |
2482 | } | |
2483 | } | |
2484 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
2485 | } | |
2486 | ||
2487 | static void rawiso_activity_cb(struct hpsb_iso *iso) | |
2488 | { | |
2489 | unsigned long flags; | |
2490 | struct host_info *hi; | |
2491 | struct file_info *fi; | |
2492 | ||
2493 | spin_lock_irqsave(&host_info_lock, flags); | |
2494 | hi = find_host_info(iso->host); | |
2495 | ||
2496 | if (hi != NULL) { | |
2497 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
2498 | if (fi->iso_handle == iso) | |
2499 | queue_rawiso_event(fi); | |
2500 | } | |
2501 | } | |
2502 | ||
2503 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2504 | } | |
2505 | ||
2506 | /* helper function - gather all the kernel iso status bits for returning to user-space */ | |
2507 | static void raw1394_iso_fill_status(struct hpsb_iso *iso, | |
2508 | struct raw1394_iso_status *stat) | |
2509 | { | |
2510 | stat->config.data_buf_size = iso->buf_size; | |
2511 | stat->config.buf_packets = iso->buf_packets; | |
2512 | stat->config.channel = iso->channel; | |
2513 | stat->config.speed = iso->speed; | |
2514 | stat->config.irq_interval = iso->irq_interval; | |
2515 | stat->n_packets = hpsb_iso_n_ready(iso); | |
2516 | stat->overflows = atomic_read(&iso->overflows); | |
2517 | stat->xmit_cycle = iso->xmit_cycle; | |
2518 | } | |
2519 | ||
2520 | static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr) | |
2521 | { | |
2522 | struct raw1394_iso_status stat; | |
2523 | ||
2524 | if (!fi->host) | |
2525 | return -EINVAL; | |
2526 | ||
2527 | if (copy_from_user(&stat, uaddr, sizeof(stat))) | |
2528 | return -EFAULT; | |
2529 | ||
2530 | fi->iso_handle = hpsb_iso_xmit_init(fi->host, | |
2531 | stat.config.data_buf_size, | |
2532 | stat.config.buf_packets, | |
2533 | stat.config.channel, | |
2534 | stat.config.speed, | |
2535 | stat.config.irq_interval, | |
2536 | rawiso_activity_cb); | |
2537 | if (!fi->iso_handle) | |
2538 | return -ENOMEM; | |
2539 | ||
2540 | fi->iso_state = RAW1394_ISO_XMIT; | |
2541 | ||
2542 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2543 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2544 | return -EFAULT; | |
2545 | ||
2546 | /* queue an event to get things started */ | |
2547 | rawiso_activity_cb(fi->iso_handle); | |
2548 | ||
2549 | return 0; | |
2550 | } | |
2551 | ||
2552 | static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr) | |
2553 | { | |
2554 | struct raw1394_iso_status stat; | |
2555 | ||
2556 | if (!fi->host) | |
2557 | return -EINVAL; | |
2558 | ||
2559 | if (copy_from_user(&stat, uaddr, sizeof(stat))) | |
2560 | return -EFAULT; | |
2561 | ||
2562 | fi->iso_handle = hpsb_iso_recv_init(fi->host, | |
2563 | stat.config.data_buf_size, | |
2564 | stat.config.buf_packets, | |
2565 | stat.config.channel, | |
2566 | stat.config.dma_mode, | |
2567 | stat.config.irq_interval, | |
2568 | rawiso_activity_cb); | |
2569 | if (!fi->iso_handle) | |
2570 | return -ENOMEM; | |
2571 | ||
2572 | fi->iso_state = RAW1394_ISO_RECV; | |
2573 | ||
2574 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2575 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2576 | return -EFAULT; | |
2577 | return 0; | |
2578 | } | |
2579 | ||
2580 | static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr) | |
2581 | { | |
2582 | struct raw1394_iso_status stat; | |
2583 | struct hpsb_iso *iso = fi->iso_handle; | |
2584 | ||
2585 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2586 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2587 | return -EFAULT; | |
2588 | ||
2589 | /* reset overflow counter */ | |
2590 | atomic_set(&iso->overflows, 0); | |
2591 | ||
2592 | return 0; | |
2593 | } | |
2594 | ||
2595 | /* copy N packet_infos out of the ringbuffer into user-supplied array */ | |
2596 | static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr) | |
2597 | { | |
2598 | struct raw1394_iso_packets upackets; | |
2599 | unsigned int packet = fi->iso_handle->first_packet; | |
2600 | int i; | |
2601 | ||
2602 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) | |
2603 | return -EFAULT; | |
2604 | ||
2605 | if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle)) | |
2606 | return -EINVAL; | |
2607 | ||
2608 | /* ensure user-supplied buffer is accessible and big enough */ | |
2609 | if (!access_ok(VERIFY_WRITE, upackets.infos, | |
c64d472a JMH |
2610 | upackets.n_packets * |
2611 | sizeof(struct raw1394_iso_packet_info))) | |
1da177e4 LT |
2612 | return -EFAULT; |
2613 | ||
2614 | /* copy the packet_infos out */ | |
2615 | for (i = 0; i < upackets.n_packets; i++) { | |
2616 | if (__copy_to_user(&upackets.infos[i], | |
2617 | &fi->iso_handle->infos[packet], | |
2618 | sizeof(struct raw1394_iso_packet_info))) | |
2619 | return -EFAULT; | |
2620 | ||
2621 | packet = (packet + 1) % fi->iso_handle->buf_packets; | |
2622 | } | |
2623 | ||
2624 | return 0; | |
2625 | } | |
2626 | ||
2627 | /* copy N packet_infos from user to ringbuffer, and queue them for transmission */ | |
2628 | static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr) | |
2629 | { | |
2630 | struct raw1394_iso_packets upackets; | |
2631 | int i, rv; | |
2632 | ||
2633 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) | |
2634 | return -EFAULT; | |
2635 | ||
1934b8b6 | 2636 | if (upackets.n_packets >= fi->iso_handle->buf_packets) |
1da177e4 LT |
2637 | return -EINVAL; |
2638 | ||
1934b8b6 BC |
2639 | if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle)) |
2640 | return -EAGAIN; | |
2641 | ||
1da177e4 LT |
2642 | /* ensure user-supplied buffer is accessible and big enough */ |
2643 | if (!access_ok(VERIFY_READ, upackets.infos, | |
c64d472a JMH |
2644 | upackets.n_packets * |
2645 | sizeof(struct raw1394_iso_packet_info))) | |
1da177e4 LT |
2646 | return -EFAULT; |
2647 | ||
2648 | /* copy the infos structs in and queue the packets */ | |
2649 | for (i = 0; i < upackets.n_packets; i++) { | |
2650 | struct raw1394_iso_packet_info info; | |
2651 | ||
2652 | if (__copy_from_user(&info, &upackets.infos[i], | |
2653 | sizeof(struct raw1394_iso_packet_info))) | |
2654 | return -EFAULT; | |
2655 | ||
2656 | rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset, | |
2657 | info.len, info.tag, info.sy); | |
2658 | if (rv) | |
2659 | return rv; | |
2660 | } | |
2661 | ||
2662 | return 0; | |
2663 | } | |
2664 | ||
2665 | static void raw1394_iso_shutdown(struct file_info *fi) | |
2666 | { | |
2667 | if (fi->iso_handle) | |
2668 | hpsb_iso_shutdown(fi->iso_handle); | |
2669 | ||
2670 | fi->iso_handle = NULL; | |
2671 | fi->iso_state = RAW1394_ISO_INACTIVE; | |
2672 | } | |
2673 | ||
3dc5ea9b PP |
2674 | static int raw1394_read_cycle_timer(struct file_info *fi, void __user * uaddr) |
2675 | { | |
2676 | struct raw1394_cycle_timer ct; | |
2677 | int err; | |
2678 | ||
2679 | err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time); | |
2680 | if (!err) | |
2681 | if (copy_to_user(uaddr, &ct, sizeof(ct))) | |
2682 | err = -EFAULT; | |
2683 | return err; | |
2684 | } | |
2685 | ||
1da177e4 LT |
2686 | /* mmap the rawiso xmit/recv buffer */ |
2687 | static int raw1394_mmap(struct file *file, struct vm_area_struct *vma) | |
2688 | { | |
2689 | struct file_info *fi = file->private_data; | |
2690 | ||
2691 | if (fi->iso_state == RAW1394_ISO_INACTIVE) | |
2692 | return -EINVAL; | |
2693 | ||
2694 | return dma_region_mmap(&fi->iso_handle->data_buf, file, vma); | |
2695 | } | |
2696 | ||
2697 | /* ioctl is only used for rawiso operations */ | |
2698 | static int raw1394_ioctl(struct inode *inode, struct file *file, | |
2699 | unsigned int cmd, unsigned long arg) | |
2700 | { | |
2701 | struct file_info *fi = file->private_data; | |
2702 | void __user *argp = (void __user *)arg; | |
2703 | ||
2704 | switch (fi->iso_state) { | |
2705 | case RAW1394_ISO_INACTIVE: | |
2706 | switch (cmd) { | |
2707 | case RAW1394_IOC_ISO_XMIT_INIT: | |
2708 | return raw1394_iso_xmit_init(fi, argp); | |
2709 | case RAW1394_IOC_ISO_RECV_INIT: | |
2710 | return raw1394_iso_recv_init(fi, argp); | |
2711 | default: | |
2712 | break; | |
2713 | } | |
2714 | break; | |
2715 | case RAW1394_ISO_RECV: | |
2716 | switch (cmd) { | |
2717 | case RAW1394_IOC_ISO_RECV_START:{ | |
2718 | /* copy args from user-space */ | |
2719 | int args[3]; | |
2720 | if (copy_from_user | |
2721 | (&args[0], argp, sizeof(args))) | |
2722 | return -EFAULT; | |
2723 | return hpsb_iso_recv_start(fi->iso_handle, | |
2724 | args[0], args[1], | |
2725 | args[2]); | |
2726 | } | |
2727 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2728 | hpsb_iso_stop(fi->iso_handle); | |
2729 | return 0; | |
2730 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: | |
2731 | return hpsb_iso_recv_listen_channel(fi->iso_handle, | |
2732 | arg); | |
2733 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: | |
2734 | return hpsb_iso_recv_unlisten_channel(fi->iso_handle, | |
2735 | arg); | |
2736 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{ | |
2737 | /* copy the u64 from user-space */ | |
2738 | u64 mask; | |
2739 | if (copy_from_user(&mask, argp, sizeof(mask))) | |
2740 | return -EFAULT; | |
2741 | return hpsb_iso_recv_set_channel_mask(fi-> | |
2742 | iso_handle, | |
2743 | mask); | |
2744 | } | |
2745 | case RAW1394_IOC_ISO_GET_STATUS: | |
2746 | return raw1394_iso_get_status(fi, argp); | |
2747 | case RAW1394_IOC_ISO_RECV_PACKETS: | |
2748 | return raw1394_iso_recv_packets(fi, argp); | |
2749 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: | |
2750 | return hpsb_iso_recv_release_packets(fi->iso_handle, | |
2751 | arg); | |
2752 | case RAW1394_IOC_ISO_RECV_FLUSH: | |
2753 | return hpsb_iso_recv_flush(fi->iso_handle); | |
2754 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2755 | raw1394_iso_shutdown(fi); | |
2756 | return 0; | |
2757 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
2758 | queue_rawiso_event(fi); | |
2759 | return 0; | |
2760 | } | |
2761 | break; | |
2762 | case RAW1394_ISO_XMIT: | |
2763 | switch (cmd) { | |
2764 | case RAW1394_IOC_ISO_XMIT_START:{ | |
2765 | /* copy two ints from user-space */ | |
2766 | int args[2]; | |
2767 | if (copy_from_user | |
2768 | (&args[0], argp, sizeof(args))) | |
2769 | return -EFAULT; | |
2770 | return hpsb_iso_xmit_start(fi->iso_handle, | |
2771 | args[0], args[1]); | |
2772 | } | |
2773 | case RAW1394_IOC_ISO_XMIT_SYNC: | |
2774 | return hpsb_iso_xmit_sync(fi->iso_handle); | |
2775 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2776 | hpsb_iso_stop(fi->iso_handle); | |
2777 | return 0; | |
2778 | case RAW1394_IOC_ISO_GET_STATUS: | |
2779 | return raw1394_iso_get_status(fi, argp); | |
2780 | case RAW1394_IOC_ISO_XMIT_PACKETS: | |
2781 | return raw1394_iso_send_packets(fi, argp); | |
2782 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2783 | raw1394_iso_shutdown(fi); | |
2784 | return 0; | |
2785 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
2786 | queue_rawiso_event(fi); | |
2787 | return 0; | |
2788 | } | |
2789 | break; | |
2790 | default: | |
2791 | break; | |
2792 | } | |
2793 | ||
3dc5ea9b PP |
2794 | /* state-independent commands */ |
2795 | switch(cmd) { | |
2796 | case RAW1394_IOC_GET_CYCLE_TIMER: | |
2797 | return raw1394_read_cycle_timer(fi, argp); | |
2798 | default: | |
2799 | break; | |
2800 | } | |
2801 | ||
1da177e4 LT |
2802 | return -EINVAL; |
2803 | } | |
2804 | ||
2805 | static unsigned int raw1394_poll(struct file *file, poll_table * pt) | |
2806 | { | |
2807 | struct file_info *fi = file->private_data; | |
2808 | unsigned int mask = POLLOUT | POLLWRNORM; | |
4a9949d7 | 2809 | unsigned long flags; |
1da177e4 | 2810 | |
45289bf6 | 2811 | poll_wait(file, &fi->wait_complete, pt); |
1da177e4 | 2812 | |
4a9949d7 | 2813 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 LT |
2814 | if (!list_empty(&fi->req_complete)) { |
2815 | mask |= POLLIN | POLLRDNORM; | |
2816 | } | |
4a9949d7 | 2817 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
2818 | |
2819 | return mask; | |
2820 | } | |
2821 | ||
2822 | static int raw1394_open(struct inode *inode, struct file *file) | |
2823 | { | |
2824 | struct file_info *fi; | |
2825 | ||
e94b1766 | 2826 | fi = kzalloc(sizeof(*fi), GFP_KERNEL); |
8551158a | 2827 | if (!fi) |
1da177e4 LT |
2828 | return -ENOMEM; |
2829 | ||
1da177e4 LT |
2830 | fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */ |
2831 | ||
2832 | INIT_LIST_HEAD(&fi->list); | |
2833 | fi->state = opened; | |
2834 | INIT_LIST_HEAD(&fi->req_pending); | |
2835 | INIT_LIST_HEAD(&fi->req_complete); | |
1da177e4 | 2836 | spin_lock_init(&fi->reqlists_lock); |
45289bf6 | 2837 | init_waitqueue_head(&fi->wait_complete); |
1da177e4 LT |
2838 | INIT_LIST_HEAD(&fi->addr_list); |
2839 | ||
2840 | file->private_data = fi; | |
2841 | ||
2842 | return 0; | |
2843 | } | |
2844 | ||
2845 | static int raw1394_release(struct inode *inode, struct file *file) | |
2846 | { | |
2847 | struct file_info *fi = file->private_data; | |
2848 | struct list_head *lh; | |
2849 | struct pending_request *req; | |
45289bf6 | 2850 | int i, fail; |
1da177e4 LT |
2851 | int retval = 0; |
2852 | struct list_head *entry; | |
2853 | struct arm_addr *addr = NULL; | |
2854 | struct host_info *hi; | |
2855 | struct file_info *fi_hlp = NULL; | |
2856 | struct arm_addr *arm_addr = NULL; | |
2857 | int another_host; | |
2858 | int csr_mod = 0; | |
4a9949d7 | 2859 | unsigned long flags; |
1da177e4 LT |
2860 | |
2861 | if (fi->iso_state != RAW1394_ISO_INACTIVE) | |
2862 | raw1394_iso_shutdown(fi); | |
2863 | ||
2864 | for (i = 0; i < 64; i++) { | |
2865 | if (fi->listen_channels & (1ULL << i)) { | |
2866 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, i); | |
2867 | } | |
2868 | } | |
2869 | ||
4a9949d7 | 2870 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 2871 | fi->listen_channels = 0; |
1da177e4 LT |
2872 | |
2873 | fail = 0; | |
2874 | /* set address-entries invalid */ | |
1da177e4 LT |
2875 | |
2876 | while (!list_empty(&fi->addr_list)) { | |
2877 | another_host = 0; | |
2878 | lh = fi->addr_list.next; | |
2879 | addr = list_entry(lh, struct arm_addr, addr_list); | |
2880 | /* another host with valid address-entry containing | |
2881 | same addressrange? */ | |
2882 | list_for_each_entry(hi, &host_info_list, list) { | |
2883 | if (hi->host != fi->host) { | |
2884 | list_for_each_entry(fi_hlp, &hi->file_info_list, | |
2885 | list) { | |
2886 | entry = fi_hlp->addr_list.next; | |
2887 | while (entry != &(fi_hlp->addr_list)) { | |
c64d472a | 2888 | arm_addr = list_entry(entry, struct |
1da177e4 LT |
2889 | arm_addr, |
2890 | addr_list); | |
2891 | if (arm_addr->start == | |
2892 | addr->start) { | |
2893 | DBGMSG | |
2894 | ("raw1394_release: " | |
2895 | "another host ownes " | |
2896 | "same addressrange"); | |
2897 | another_host = 1; | |
2898 | break; | |
2899 | } | |
2900 | entry = entry->next; | |
2901 | } | |
2902 | if (another_host) { | |
2903 | break; | |
2904 | } | |
2905 | } | |
2906 | } | |
2907 | } | |
2908 | if (!another_host) { | |
2909 | DBGMSG("raw1394_release: call hpsb_arm_unregister"); | |
2910 | retval = | |
2911 | hpsb_unregister_addrspace(&raw1394_highlevel, | |
2912 | fi->host, addr->start); | |
2913 | if (!retval) { | |
2914 | ++fail; | |
2915 | printk(KERN_ERR | |
2916 | "raw1394_release arm_Unregister failed\n"); | |
2917 | } | |
2918 | } | |
2919 | DBGMSG("raw1394_release: delete addr_entry from list"); | |
2920 | list_del(&addr->addr_list); | |
2921 | vfree(addr->addr_space_buffer); | |
2922 | kfree(addr); | |
2923 | } /* while */ | |
4a9949d7 | 2924 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2925 | if (fail > 0) { |
2926 | printk(KERN_ERR "raw1394: during addr_list-release " | |
2927 | "error(s) occurred \n"); | |
2928 | } | |
2929 | ||
45289bf6 SR |
2930 | for (;;) { |
2931 | /* This locked section guarantees that neither | |
2932 | * complete nor pending requests exist once i!=0 */ | |
4a9949d7 | 2933 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
45289bf6 | 2934 | while ((req = __next_complete_req(fi))) |
1da177e4 | 2935 | free_pending_request(req); |
1da177e4 | 2936 | |
45289bf6 | 2937 | i = list_empty(&fi->req_pending); |
4a9949d7 | 2938 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 | 2939 | |
45289bf6 SR |
2940 | if (i) |
2941 | break; | |
2942 | /* | |
2943 | * Sleep until more requests can be freed. | |
2944 | * | |
2945 | * NB: We call the macro wait_event() with a condition argument | |
2946 | * with side effect. This is only possible because the side | |
2947 | * effect does not occur until the condition became true, and | |
2948 | * wait_event() won't evaluate the condition again after that. | |
2949 | */ | |
2950 | wait_event(fi->wait_complete, (req = next_complete_req(fi))); | |
2951 | free_pending_request(req); | |
1da177e4 LT |
2952 | } |
2953 | ||
2954 | /* Remove any sub-trees left by user space programs */ | |
2955 | for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) { | |
2956 | struct csr1212_dentry *dentry; | |
2957 | if (!fi->csr1212_dirs[i]) | |
2958 | continue; | |
2959 | for (dentry = | |
2960 | fi->csr1212_dirs[i]->value.directory.dentries_head; dentry; | |
2961 | dentry = dentry->next) { | |
2962 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2963 | root_kv, | |
2964 | dentry->kv); | |
2965 | } | |
2966 | csr1212_release_keyval(fi->csr1212_dirs[i]); | |
2967 | fi->csr1212_dirs[i] = NULL; | |
2968 | csr_mod = 1; | |
2969 | } | |
2970 | ||
2971 | if ((csr_mod || fi->cfgrom_upd) | |
2972 | && hpsb_update_config_rom_image(fi->host) < 0) | |
2973 | HPSB_ERR | |
2974 | ("Failed to generate Configuration ROM image for host %d", | |
2975 | fi->host->id); | |
2976 | ||
2977 | if (fi->state == connected) { | |
4a9949d7 | 2978 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 2979 | list_del(&fi->list); |
4a9949d7 | 2980 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2981 | |
2982 | put_device(&fi->host->device); | |
2983 | } | |
2984 | ||
0fe4c6fc SR |
2985 | spin_lock_irqsave(&host_info_lock, flags); |
2986 | if (fi->host) | |
2987 | module_put(fi->host->driver->owner); | |
2988 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2989 | ||
1da177e4 LT |
2990 | kfree(fi); |
2991 | ||
2992 | return 0; | |
2993 | } | |
2994 | ||
2995 | /*** HOTPLUG STUFF **********************************************************/ | |
2996 | /* | |
2997 | * Export information about protocols/devices supported by this driver. | |
2998 | */ | |
2999 | static struct ieee1394_device_id raw1394_id_table[] = { | |
3000 | { | |
3001 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
3002 | .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
3003 | .version = AVC_SW_VERSION_ENTRY & 0xffffff}, | |
3004 | { | |
3005 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
3006 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
3007 | .version = CAMERA_SW_VERSION_ENTRY & 0xffffff}, | |
3008 | { | |
3009 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
3010 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
3011 | .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff}, | |
3012 | { | |
3013 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
3014 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
3015 | .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff}, | |
3016 | {} | |
3017 | }; | |
3018 | ||
3019 | MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table); | |
3020 | ||
3021 | static struct hpsb_protocol_driver raw1394_driver = { | |
ed30c26e | 3022 | .name = "raw1394", |
1da177e4 | 3023 | .id_table = raw1394_id_table, |
1da177e4 LT |
3024 | }; |
3025 | ||
3026 | /******************************************************************************/ | |
3027 | ||
3028 | static struct hpsb_highlevel raw1394_highlevel = { | |
3029 | .name = RAW1394_DEVICE_NAME, | |
3030 | .add_host = add_host, | |
3031 | .remove_host = remove_host, | |
3032 | .host_reset = host_reset, | |
3033 | .iso_receive = iso_receive, | |
3034 | .fcp_request = fcp_request, | |
3035 | }; | |
3036 | ||
3037 | static struct cdev raw1394_cdev; | |
2b8693c0 | 3038 | static const struct file_operations raw1394_fops = { |
1da177e4 LT |
3039 | .owner = THIS_MODULE, |
3040 | .read = raw1394_read, | |
3041 | .write = raw1394_write, | |
3042 | .mmap = raw1394_mmap, | |
3043 | .ioctl = raw1394_ioctl, | |
4bc32c4d | 3044 | // .compat_ioctl = ... someone needs to do this |
1da177e4 LT |
3045 | .poll = raw1394_poll, |
3046 | .open = raw1394_open, | |
3047 | .release = raw1394_release, | |
3048 | }; | |
3049 | ||
3050 | static int __init init_raw1394(void) | |
3051 | { | |
3052 | int ret = 0; | |
3053 | ||
3054 | hpsb_register_highlevel(&raw1394_highlevel); | |
3055 | ||
c64d472a JMH |
3056 | if (IS_ERR |
3057 | (class_device_create | |
3058 | (hpsb_protocol_class, NULL, | |
3059 | MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16), NULL, | |
3060 | RAW1394_DEVICE_NAME))) { | |
1da177e4 LT |
3061 | ret = -EFAULT; |
3062 | goto out_unreg; | |
3063 | } | |
c64d472a | 3064 | |
1da177e4 LT |
3065 | cdev_init(&raw1394_cdev, &raw1394_fops); |
3066 | raw1394_cdev.owner = THIS_MODULE; | |
3067 | kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME); | |
3068 | ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1); | |
3069 | if (ret) { | |
3070 | HPSB_ERR("raw1394 failed to register minor device block"); | |
3071 | goto out_dev; | |
3072 | } | |
3073 | ||
3074 | HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME); | |
3075 | ||
3076 | ret = hpsb_register_protocol(&raw1394_driver); | |
3077 | if (ret) { | |
3078 | HPSB_ERR("raw1394: failed to register protocol"); | |
3079 | cdev_del(&raw1394_cdev); | |
3080 | goto out_dev; | |
3081 | } | |
3082 | ||
3083 | goto out; | |
3084 | ||
c64d472a | 3085 | out_dev: |
7e25ab91 | 3086 | class_device_destroy(hpsb_protocol_class, |
c64d472a JMH |
3087 | MKDEV(IEEE1394_MAJOR, |
3088 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); | |
3089 | out_unreg: | |
1da177e4 | 3090 | hpsb_unregister_highlevel(&raw1394_highlevel); |
c64d472a | 3091 | out: |
1da177e4 LT |
3092 | return ret; |
3093 | } | |
3094 | ||
3095 | static void __exit cleanup_raw1394(void) | |
3096 | { | |
7e25ab91 | 3097 | class_device_destroy(hpsb_protocol_class, |
c64d472a JMH |
3098 | MKDEV(IEEE1394_MAJOR, |
3099 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); | |
1da177e4 | 3100 | cdev_del(&raw1394_cdev); |
1da177e4 LT |
3101 | hpsb_unregister_highlevel(&raw1394_highlevel); |
3102 | hpsb_unregister_protocol(&raw1394_driver); | |
3103 | } | |
3104 | ||
3105 | module_init(init_raw1394); | |
3106 | module_exit(cleanup_raw1394); | |
3107 | MODULE_LICENSE("GPL"); |