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 | ||
dd0fc66f | 101 | static struct pending_request *__alloc_pending_request(gfp_t flags) |
1da177e4 LT |
102 | { |
103 | struct pending_request *req; | |
104 | ||
8551158a SR |
105 | req = kzalloc(sizeof(*req), flags); |
106 | if (req) | |
1da177e4 | 107 | INIT_LIST_HEAD(&req->list); |
1da177e4 LT |
108 | |
109 | return req; | |
110 | } | |
111 | ||
112 | static inline struct pending_request *alloc_pending_request(void) | |
113 | { | |
e94b1766 | 114 | return __alloc_pending_request(GFP_KERNEL); |
1da177e4 LT |
115 | } |
116 | ||
117 | static void free_pending_request(struct pending_request *req) | |
118 | { | |
119 | if (req->ibs) { | |
120 | if (atomic_dec_and_test(&req->ibs->refcount)) { | |
121 | atomic_sub(req->ibs->data_size, &iso_buffer_size); | |
122 | kfree(req->ibs); | |
123 | } | |
124 | } else if (req->free_data) { | |
125 | kfree(req->data); | |
126 | } | |
127 | hpsb_free_packet(req->packet); | |
128 | kfree(req); | |
129 | } | |
130 | ||
131 | /* fi->reqlists_lock must be taken */ | |
132 | static void __queue_complete_req(struct pending_request *req) | |
133 | { | |
134 | struct file_info *fi = req->file_info; | |
1da177e4 | 135 | |
45289bf6 SR |
136 | list_move_tail(&req->list, &fi->req_complete); |
137 | wake_up(&fi->wait_complete); | |
1da177e4 LT |
138 | } |
139 | ||
140 | static void queue_complete_req(struct pending_request *req) | |
141 | { | |
142 | unsigned long flags; | |
143 | struct file_info *fi = req->file_info; | |
144 | ||
145 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
146 | __queue_complete_req(req); | |
147 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
148 | } | |
149 | ||
150 | static void queue_complete_cb(struct pending_request *req) | |
151 | { | |
152 | struct hpsb_packet *packet = req->packet; | |
153 | int rcode = (packet->header[1] >> 12) & 0xf; | |
154 | ||
155 | switch (packet->ack_code) { | |
156 | case ACKX_NONE: | |
157 | case ACKX_SEND_ERROR: | |
158 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
159 | break; | |
160 | case ACKX_ABORTED: | |
161 | req->req.error = RAW1394_ERROR_ABORTED; | |
162 | break; | |
163 | case ACKX_TIMEOUT: | |
164 | req->req.error = RAW1394_ERROR_TIMEOUT; | |
165 | break; | |
166 | default: | |
167 | req->req.error = (packet->ack_code << 16) | rcode; | |
168 | break; | |
169 | } | |
170 | ||
171 | if (!((packet->ack_code == ACK_PENDING) && (rcode == RCODE_COMPLETE))) { | |
172 | req->req.length = 0; | |
173 | } | |
174 | ||
175 | if ((req->req.type == RAW1394_REQ_ASYNC_READ) || | |
176 | (req->req.type == RAW1394_REQ_ASYNC_WRITE) || | |
177 | (req->req.type == RAW1394_REQ_ASYNC_STREAM) || | |
178 | (req->req.type == RAW1394_REQ_LOCK) || | |
179 | (req->req.type == RAW1394_REQ_LOCK64)) | |
180 | hpsb_free_tlabel(packet); | |
181 | ||
182 | queue_complete_req(req); | |
183 | } | |
184 | ||
185 | static void add_host(struct hpsb_host *host) | |
186 | { | |
187 | struct host_info *hi; | |
188 | unsigned long flags; | |
189 | ||
8551158a | 190 | hi = kmalloc(sizeof(*hi), GFP_KERNEL); |
1da177e4 | 191 | |
8551158a | 192 | if (hi) { |
1da177e4 LT |
193 | INIT_LIST_HEAD(&hi->list); |
194 | hi->host = host; | |
195 | INIT_LIST_HEAD(&hi->file_info_list); | |
196 | ||
197 | spin_lock_irqsave(&host_info_lock, flags); | |
198 | list_add_tail(&hi->list, &host_info_list); | |
199 | host_count++; | |
200 | spin_unlock_irqrestore(&host_info_lock, flags); | |
201 | } | |
202 | ||
203 | atomic_inc(&internal_generation); | |
204 | } | |
205 | ||
206 | static struct host_info *find_host_info(struct hpsb_host *host) | |
207 | { | |
208 | struct host_info *hi; | |
209 | ||
210 | list_for_each_entry(hi, &host_info_list, list) | |
211 | if (hi->host == host) | |
212 | return hi; | |
213 | ||
214 | return NULL; | |
215 | } | |
216 | ||
217 | static void remove_host(struct hpsb_host *host) | |
218 | { | |
219 | struct host_info *hi; | |
220 | unsigned long flags; | |
221 | ||
222 | spin_lock_irqsave(&host_info_lock, flags); | |
223 | hi = find_host_info(host); | |
224 | ||
225 | if (hi != NULL) { | |
226 | list_del(&hi->list); | |
227 | host_count--; | |
228 | /* | |
229 | FIXME: address ranges should be removed | |
230 | and fileinfo states should be initialized | |
231 | (including setting generation to | |
232 | internal-generation ...) | |
233 | */ | |
234 | } | |
235 | spin_unlock_irqrestore(&host_info_lock, flags); | |
236 | ||
237 | if (hi == NULL) { | |
238 | printk(KERN_ERR "raw1394: attempt to remove unknown host " | |
239 | "0x%p\n", host); | |
240 | return; | |
241 | } | |
242 | ||
243 | kfree(hi); | |
244 | ||
245 | atomic_inc(&internal_generation); | |
246 | } | |
247 | ||
248 | static void host_reset(struct hpsb_host *host) | |
249 | { | |
250 | unsigned long flags; | |
251 | struct host_info *hi; | |
252 | struct file_info *fi; | |
253 | struct pending_request *req; | |
254 | ||
255 | spin_lock_irqsave(&host_info_lock, flags); | |
256 | hi = find_host_info(host); | |
257 | ||
258 | if (hi != NULL) { | |
259 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
260 | if (fi->notification == RAW1394_NOTIFY_ON) { | |
54e6ecb2 | 261 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
262 | |
263 | if (req != NULL) { | |
264 | req->file_info = fi; | |
265 | req->req.type = RAW1394_REQ_BUS_RESET; | |
266 | req->req.generation = | |
267 | get_hpsb_generation(host); | |
268 | req->req.misc = (host->node_id << 16) | |
269 | | host->node_count; | |
270 | if (fi->protocol_version > 3) { | |
271 | req->req.misc |= | |
272 | (NODEID_TO_NODE | |
273 | (host->irm_id) | |
274 | << 8); | |
275 | } | |
276 | ||
277 | queue_complete_req(req); | |
278 | } | |
279 | } | |
280 | } | |
281 | } | |
282 | spin_unlock_irqrestore(&host_info_lock, flags); | |
283 | } | |
284 | ||
1da177e4 LT |
285 | static void fcp_request(struct hpsb_host *host, int nodeid, int direction, |
286 | int cts, u8 * data, size_t length) | |
287 | { | |
288 | unsigned long flags; | |
289 | struct host_info *hi; | |
290 | struct file_info *fi; | |
291 | struct pending_request *req, *req_next; | |
292 | struct iso_block_store *ibs = NULL; | |
293 | LIST_HEAD(reqs); | |
294 | ||
295 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { | |
296 | HPSB_INFO("dropped fcp request"); | |
297 | return; | |
298 | } | |
299 | ||
300 | spin_lock_irqsave(&host_info_lock, flags); | |
301 | hi = find_host_info(host); | |
302 | ||
303 | if (hi != NULL) { | |
304 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
305 | if (!fi->fcp_buffer) | |
306 | continue; | |
307 | ||
54e6ecb2 | 308 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
309 | if (!req) |
310 | break; | |
311 | ||
312 | if (!ibs) { | |
8551158a | 313 | ibs = kmalloc(sizeof(*ibs) + length, |
54e6ecb2 | 314 | GFP_ATOMIC); |
1da177e4 LT |
315 | if (!ibs) { |
316 | kfree(req); | |
317 | break; | |
318 | } | |
319 | ||
320 | atomic_add(length, &iso_buffer_size); | |
321 | atomic_set(&ibs->refcount, 0); | |
322 | ibs->data_size = length; | |
323 | memcpy(ibs->data, data, length); | |
324 | } | |
325 | ||
326 | atomic_inc(&ibs->refcount); | |
327 | ||
328 | req->file_info = fi; | |
329 | req->ibs = ibs; | |
330 | req->data = ibs->data; | |
331 | req->req.type = RAW1394_REQ_FCP_REQUEST; | |
332 | req->req.generation = get_hpsb_generation(host); | |
333 | req->req.misc = nodeid | (direction << 16); | |
334 | req->req.recvb = ptr2int(fi->fcp_buffer); | |
335 | req->req.length = length; | |
336 | ||
337 | list_add_tail(&req->list, &reqs); | |
338 | } | |
339 | } | |
340 | spin_unlock_irqrestore(&host_info_lock, flags); | |
341 | ||
342 | list_for_each_entry_safe(req, req_next, &reqs, list) | |
343 | queue_complete_req(req); | |
344 | } | |
345 | ||
4bc32c4d AK |
346 | #ifdef CONFIG_COMPAT |
347 | struct compat_raw1394_req { | |
7597028a BC |
348 | __u32 type; |
349 | __s32 error; | |
350 | __u32 misc; | |
4bc32c4d | 351 | |
7597028a BC |
352 | __u32 generation; |
353 | __u32 length; | |
4bc32c4d | 354 | |
7597028a | 355 | __u64 address; |
4bc32c4d | 356 | |
7597028a | 357 | __u64 tag; |
4bc32c4d | 358 | |
7597028a BC |
359 | __u64 sendb; |
360 | __u64 recvb; | |
59337087 SR |
361 | } |
362 | #if defined(CONFIG_X86_64) || defined(CONFIG_IA64) | |
363 | __attribute__((packed)) | |
364 | #endif | |
365 | ; | |
4bc32c4d AK |
366 | |
367 | static const char __user *raw1394_compat_write(const char __user *buf) | |
368 | { | |
7597028a | 369 | struct compat_raw1394_req __user *cr = (typeof(cr)) buf; |
4bc32c4d AK |
370 | struct raw1394_request __user *r; |
371 | r = compat_alloc_user_space(sizeof(struct raw1394_request)); | |
372 | ||
373 | #define C(x) __copy_in_user(&r->x, &cr->x, sizeof(r->x)) | |
374 | ||
375 | if (copy_in_user(r, cr, sizeof(struct compat_raw1394_req)) || | |
7597028a BC |
376 | C(address) || |
377 | C(tag) || | |
378 | C(sendb) || | |
379 | C(recvb)) | |
4bc32c4d AK |
380 | return ERR_PTR(-EFAULT); |
381 | return (const char __user *)r; | |
382 | } | |
383 | #undef C | |
384 | ||
385 | #define P(x) __put_user(r->x, &cr->x) | |
386 | ||
7597028a | 387 | static int |
4bc32c4d AK |
388 | raw1394_compat_read(const char __user *buf, struct raw1394_request *r) |
389 | { | |
ee9be425 | 390 | struct compat_raw1394_req __user *cr = (typeof(cr)) buf; |
7597028a | 391 | if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) || |
4bc32c4d AK |
392 | P(type) || |
393 | P(error) || | |
394 | P(misc) || | |
395 | P(generation) || | |
396 | P(length) || | |
397 | P(address) || | |
398 | P(tag) || | |
399 | P(sendb) || | |
400 | P(recvb)) | |
401 | return -EFAULT; | |
402 | return sizeof(struct compat_raw1394_req); | |
403 | } | |
404 | #undef P | |
405 | ||
406 | #endif | |
407 | ||
45289bf6 SR |
408 | /* get next completed request (caller must hold fi->reqlists_lock) */ |
409 | static inline struct pending_request *__next_complete_req(struct file_info *fi) | |
410 | { | |
411 | struct list_head *lh; | |
412 | struct pending_request *req = NULL; | |
413 | ||
414 | if (!list_empty(&fi->req_complete)) { | |
415 | lh = fi->req_complete.next; | |
416 | list_del(lh); | |
417 | req = list_entry(lh, struct pending_request, list); | |
418 | } | |
419 | return req; | |
420 | } | |
421 | ||
422 | /* atomically get next completed request */ | |
423 | static struct pending_request *next_complete_req(struct file_info *fi) | |
424 | { | |
425 | unsigned long flags; | |
426 | struct pending_request *req; | |
427 | ||
428 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
429 | req = __next_complete_req(fi); | |
430 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
431 | return req; | |
432 | } | |
4bc32c4d | 433 | |
1da177e4 LT |
434 | static ssize_t raw1394_read(struct file *file, char __user * buffer, |
435 | size_t count, loff_t * offset_is_ignored) | |
436 | { | |
437 | struct file_info *fi = (struct file_info *)file->private_data; | |
1da177e4 LT |
438 | struct pending_request *req; |
439 | ssize_t ret; | |
440 | ||
4bc32c4d AK |
441 | #ifdef CONFIG_COMPAT |
442 | if (count == sizeof(struct compat_raw1394_req)) { | |
443 | /* ok */ | |
444 | } else | |
445 | #endif | |
1da177e4 LT |
446 | if (count != sizeof(struct raw1394_request)) { |
447 | return -EINVAL; | |
448 | } | |
449 | ||
450 | if (!access_ok(VERIFY_WRITE, buffer, count)) { | |
451 | return -EFAULT; | |
452 | } | |
453 | ||
454 | if (file->f_flags & O_NONBLOCK) { | |
45289bf6 | 455 | if (!(req = next_complete_req(fi))) |
1da177e4 | 456 | return -EAGAIN; |
1da177e4 | 457 | } else { |
45289bf6 SR |
458 | /* |
459 | * NB: We call the macro wait_event_interruptible() with a | |
460 | * condition argument with side effect. This is only possible | |
461 | * because the side effect does not occur until the condition | |
462 | * became true, and wait_event_interruptible() won't evaluate | |
463 | * the condition again after that. | |
464 | */ | |
465 | if (wait_event_interruptible(fi->wait_complete, | |
466 | (req = next_complete_req(fi)))) | |
1da177e4 | 467 | return -ERESTARTSYS; |
1da177e4 LT |
468 | } |
469 | ||
1da177e4 LT |
470 | if (req->req.length) { |
471 | if (copy_to_user(int2ptr(req->req.recvb), req->data, | |
472 | req->req.length)) { | |
473 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
474 | } | |
475 | } | |
1da177e4 | 476 | |
4bc32c4d | 477 | #ifdef CONFIG_COMPAT |
7597028a BC |
478 | if (count == sizeof(struct compat_raw1394_req) && |
479 | sizeof(struct compat_raw1394_req) != | |
480 | sizeof(struct raw1394_request)) { | |
4bc32c4d | 481 | ret = raw1394_compat_read(buffer, &req->req); |
7597028a | 482 | } else |
4bc32c4d AK |
483 | #endif |
484 | { | |
485 | if (copy_to_user(buffer, &req->req, sizeof(req->req))) { | |
486 | ret = -EFAULT; | |
487 | goto out; | |
7597028a | 488 | } |
4bc32c4d AK |
489 | ret = (ssize_t) sizeof(struct raw1394_request); |
490 | } | |
1da177e4 LT |
491 | out: |
492 | free_pending_request(req); | |
493 | return ret; | |
494 | } | |
495 | ||
496 | static int state_opened(struct file_info *fi, struct pending_request *req) | |
497 | { | |
498 | if (req->req.type == RAW1394_REQ_INITIALIZE) { | |
499 | switch (req->req.misc) { | |
500 | case RAW1394_KERNELAPI_VERSION: | |
501 | case 3: | |
502 | fi->state = initialized; | |
503 | fi->protocol_version = req->req.misc; | |
504 | req->req.error = RAW1394_ERROR_NONE; | |
505 | req->req.generation = atomic_read(&internal_generation); | |
506 | break; | |
507 | ||
508 | default: | |
509 | req->req.error = RAW1394_ERROR_COMPAT; | |
510 | req->req.misc = RAW1394_KERNELAPI_VERSION; | |
511 | } | |
512 | } else { | |
513 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
514 | } | |
515 | ||
516 | req->req.length = 0; | |
517 | queue_complete_req(req); | |
883b97ea | 518 | return 0; |
1da177e4 LT |
519 | } |
520 | ||
521 | static int state_initialized(struct file_info *fi, struct pending_request *req) | |
522 | { | |
4a9949d7 | 523 | unsigned long flags; |
1da177e4 LT |
524 | struct host_info *hi; |
525 | struct raw1394_khost_list *khl; | |
526 | ||
527 | if (req->req.generation != atomic_read(&internal_generation)) { | |
528 | req->req.error = RAW1394_ERROR_GENERATION; | |
529 | req->req.generation = atomic_read(&internal_generation); | |
530 | req->req.length = 0; | |
531 | queue_complete_req(req); | |
883b97ea | 532 | return 0; |
1da177e4 LT |
533 | } |
534 | ||
535 | switch (req->req.type) { | |
536 | case RAW1394_REQ_LIST_CARDS: | |
4a9949d7 | 537 | spin_lock_irqsave(&host_info_lock, flags); |
54e6ecb2 | 538 | khl = kmalloc(sizeof(*khl) * host_count, GFP_ATOMIC); |
1da177e4 | 539 | |
8551158a | 540 | if (khl) { |
1da177e4 LT |
541 | req->req.misc = host_count; |
542 | req->data = (quadlet_t *) khl; | |
543 | ||
544 | list_for_each_entry(hi, &host_info_list, list) { | |
545 | khl->nodes = hi->host->node_count; | |
546 | strcpy(khl->name, hi->host->driver->name); | |
547 | khl++; | |
548 | } | |
549 | } | |
4a9949d7 | 550 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 | 551 | |
8551158a | 552 | if (khl) { |
1da177e4 LT |
553 | req->req.error = RAW1394_ERROR_NONE; |
554 | req->req.length = min(req->req.length, | |
555 | (u32) (sizeof | |
556 | (struct raw1394_khost_list) | |
557 | * req->req.misc)); | |
558 | req->free_data = 1; | |
559 | } else { | |
560 | return -ENOMEM; | |
561 | } | |
562 | break; | |
563 | ||
564 | case RAW1394_REQ_SET_CARD: | |
4a9949d7 | 565 | spin_lock_irqsave(&host_info_lock, flags); |
0fe4c6fc | 566 | if (req->req.misc >= host_count) { |
1da177e4 | 567 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
0fe4c6fc | 568 | goto out_set_card; |
1da177e4 | 569 | } |
0fe4c6fc SR |
570 | list_for_each_entry(hi, &host_info_list, list) |
571 | if (!req->req.misc--) | |
572 | break; | |
573 | get_device(&hi->host->device); /* FIXME handle failure case */ | |
574 | list_add_tail(&fi->list, &hi->file_info_list); | |
575 | ||
576 | /* prevent unloading of the host's low-level driver */ | |
577 | if (!try_module_get(hi->host->driver->owner)) { | |
578 | req->req.error = RAW1394_ERROR_ABORTED; | |
579 | goto out_set_card; | |
580 | } | |
581 | WARN_ON(fi->host); | |
582 | fi->host = hi->host; | |
583 | fi->state = connected; | |
584 | ||
585 | req->req.error = RAW1394_ERROR_NONE; | |
586 | req->req.generation = get_hpsb_generation(fi->host); | |
587 | req->req.misc = (fi->host->node_id << 16) | |
588 | | fi->host->node_count; | |
589 | if (fi->protocol_version > 3) | |
590 | req->req.misc |= NODEID_TO_NODE(fi->host->irm_id) << 8; | |
591 | out_set_card: | |
4a9949d7 | 592 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
593 | |
594 | req->req.length = 0; | |
595 | break; | |
596 | ||
597 | default: | |
598 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
599 | req->req.length = 0; | |
600 | break; | |
601 | } | |
602 | ||
603 | queue_complete_req(req); | |
883b97ea | 604 | return 0; |
1da177e4 LT |
605 | } |
606 | ||
1da177e4 LT |
607 | static void handle_fcp_listen(struct file_info *fi, struct pending_request *req) |
608 | { | |
609 | if (req->req.misc) { | |
610 | if (fi->fcp_buffer) { | |
611 | req->req.error = RAW1394_ERROR_ALREADY; | |
612 | } else { | |
613 | fi->fcp_buffer = int2ptr(req->req.recvb); | |
614 | } | |
615 | } else { | |
616 | if (!fi->fcp_buffer) { | |
617 | req->req.error = RAW1394_ERROR_ALREADY; | |
618 | } else { | |
619 | fi->fcp_buffer = NULL; | |
620 | } | |
621 | } | |
622 | ||
623 | req->req.length = 0; | |
624 | queue_complete_req(req); | |
625 | } | |
626 | ||
627 | static int handle_async_request(struct file_info *fi, | |
628 | struct pending_request *req, int node) | |
629 | { | |
4a9949d7 | 630 | unsigned long flags; |
1da177e4 LT |
631 | struct hpsb_packet *packet = NULL; |
632 | u64 addr = req->req.address & 0xffffffffffffULL; | |
633 | ||
634 | switch (req->req.type) { | |
635 | case RAW1394_REQ_ASYNC_READ: | |
636 | DBGMSG("read_request called"); | |
637 | packet = | |
638 | hpsb_make_readpacket(fi->host, node, addr, req->req.length); | |
639 | ||
640 | if (!packet) | |
641 | return -ENOMEM; | |
642 | ||
643 | if (req->req.length == 4) | |
644 | req->data = &packet->header[3]; | |
645 | else | |
646 | req->data = packet->data; | |
647 | ||
648 | break; | |
649 | ||
650 | case RAW1394_REQ_ASYNC_WRITE: | |
651 | DBGMSG("write_request called"); | |
652 | ||
653 | packet = hpsb_make_writepacket(fi->host, node, addr, NULL, | |
654 | req->req.length); | |
655 | if (!packet) | |
656 | return -ENOMEM; | |
657 | ||
658 | if (req->req.length == 4) { | |
659 | if (copy_from_user | |
660 | (&packet->header[3], int2ptr(req->req.sendb), | |
661 | req->req.length)) | |
662 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
663 | } else { | |
664 | if (copy_from_user | |
665 | (packet->data, int2ptr(req->req.sendb), | |
666 | req->req.length)) | |
667 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
668 | } | |
669 | ||
670 | req->req.length = 0; | |
671 | break; | |
672 | ||
673 | case RAW1394_REQ_ASYNC_STREAM: | |
674 | DBGMSG("stream_request called"); | |
675 | ||
676 | packet = | |
677 | hpsb_make_streampacket(fi->host, NULL, req->req.length, | |
678 | node & 0x3f /*channel */ , | |
679 | (req->req.misc >> 16) & 0x3, | |
680 | req->req.misc & 0xf); | |
681 | if (!packet) | |
682 | return -ENOMEM; | |
683 | ||
684 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
685 | req->req.length)) | |
686 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
687 | ||
688 | req->req.length = 0; | |
689 | break; | |
690 | ||
691 | case RAW1394_REQ_LOCK: | |
692 | DBGMSG("lock_request called"); | |
693 | if ((req->req.misc == EXTCODE_FETCH_ADD) | |
694 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { | |
695 | if (req->req.length != 4) { | |
696 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
697 | break; | |
698 | } | |
699 | } else { | |
700 | if (req->req.length != 8) { | |
701 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
702 | break; | |
703 | } | |
704 | } | |
705 | ||
706 | packet = hpsb_make_lockpacket(fi->host, node, addr, | |
707 | req->req.misc, NULL, 0); | |
708 | if (!packet) | |
709 | return -ENOMEM; | |
710 | ||
711 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
712 | req->req.length)) { | |
713 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
714 | break; | |
715 | } | |
716 | ||
717 | req->data = packet->data; | |
718 | req->req.length = 4; | |
719 | break; | |
720 | ||
721 | case RAW1394_REQ_LOCK64: | |
722 | DBGMSG("lock64_request called"); | |
723 | if ((req->req.misc == EXTCODE_FETCH_ADD) | |
724 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { | |
725 | if (req->req.length != 8) { | |
726 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
727 | break; | |
728 | } | |
729 | } else { | |
730 | if (req->req.length != 16) { | |
731 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
732 | break; | |
733 | } | |
734 | } | |
735 | packet = hpsb_make_lock64packet(fi->host, node, addr, | |
736 | req->req.misc, NULL, 0); | |
737 | if (!packet) | |
738 | return -ENOMEM; | |
739 | ||
740 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), | |
741 | req->req.length)) { | |
742 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
743 | break; | |
744 | } | |
745 | ||
746 | req->data = packet->data; | |
747 | req->req.length = 8; | |
748 | break; | |
749 | ||
750 | default: | |
751 | req->req.error = RAW1394_ERROR_STATE_ORDER; | |
752 | } | |
753 | ||
754 | req->packet = packet; | |
755 | ||
756 | if (req->req.error) { | |
757 | req->req.length = 0; | |
758 | queue_complete_req(req); | |
883b97ea | 759 | return 0; |
1da177e4 LT |
760 | } |
761 | ||
762 | hpsb_set_packet_complete_task(packet, | |
763 | (void (*)(void *))queue_complete_cb, req); | |
764 | ||
4a9949d7 | 765 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 766 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 767 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
768 | |
769 | packet->generation = req->req.generation; | |
770 | ||
771 | if (hpsb_send_packet(packet) < 0) { | |
772 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
773 | req->req.length = 0; | |
774 | hpsb_free_tlabel(packet); | |
775 | queue_complete_req(req); | |
776 | } | |
883b97ea | 777 | return 0; |
1da177e4 LT |
778 | } |
779 | ||
1da177e4 LT |
780 | static int handle_async_send(struct file_info *fi, struct pending_request *req) |
781 | { | |
4a9949d7 | 782 | unsigned long flags; |
1da177e4 LT |
783 | struct hpsb_packet *packet; |
784 | int header_length = req->req.misc & 0xffff; | |
785 | int expect_response = req->req.misc >> 16; | |
976da96a | 786 | size_t data_size; |
1da177e4 | 787 | |
7542e0e6 SR |
788 | if (header_length > req->req.length || header_length < 12 || |
789 | header_length > FIELD_SIZEOF(struct hpsb_packet, header)) { | |
1da177e4 LT |
790 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
791 | req->req.length = 0; | |
792 | queue_complete_req(req); | |
883b97ea | 793 | return 0; |
1da177e4 LT |
794 | } |
795 | ||
976da96a PV |
796 | data_size = req->req.length - header_length; |
797 | packet = hpsb_alloc_packet(data_size); | |
1da177e4 LT |
798 | req->packet = packet; |
799 | if (!packet) | |
800 | return -ENOMEM; | |
801 | ||
802 | if (copy_from_user(packet->header, int2ptr(req->req.sendb), | |
803 | header_length)) { | |
804 | req->req.error = RAW1394_ERROR_MEMFAULT; | |
805 | req->req.length = 0; | |
806 | queue_complete_req(req); | |
883b97ea | 807 | return 0; |
1da177e4 LT |
808 | } |
809 | ||
810 | if (copy_from_user | |
811 | (packet->data, int2ptr(req->req.sendb) + header_length, | |
976da96a | 812 | data_size)) { |
1da177e4 LT |
813 | req->req.error = RAW1394_ERROR_MEMFAULT; |
814 | req->req.length = 0; | |
815 | queue_complete_req(req); | |
883b97ea | 816 | return 0; |
1da177e4 LT |
817 | } |
818 | ||
819 | packet->type = hpsb_async; | |
820 | packet->node_id = packet->header[0] >> 16; | |
821 | packet->tcode = (packet->header[0] >> 4) & 0xf; | |
822 | packet->tlabel = (packet->header[0] >> 10) & 0x3f; | |
823 | packet->host = fi->host; | |
824 | packet->expect_response = expect_response; | |
825 | packet->header_size = header_length; | |
976da96a | 826 | packet->data_size = data_size; |
1da177e4 LT |
827 | |
828 | req->req.length = 0; | |
829 | hpsb_set_packet_complete_task(packet, | |
830 | (void (*)(void *))queue_complete_cb, req); | |
831 | ||
4a9949d7 | 832 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 833 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 834 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
835 | |
836 | /* Update the generation of the packet just before sending. */ | |
837 | packet->generation = req->req.generation; | |
838 | ||
839 | if (hpsb_send_packet(packet) < 0) { | |
840 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
841 | queue_complete_req(req); | |
842 | } | |
843 | ||
883b97ea | 844 | return 0; |
1da177e4 LT |
845 | } |
846 | ||
847 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, | |
848 | u64 addr, size_t length, u16 flags) | |
849 | { | |
4a9949d7 | 850 | unsigned long irqflags; |
1da177e4 LT |
851 | struct pending_request *req; |
852 | struct host_info *hi; | |
853 | struct file_info *fi = NULL; | |
854 | struct list_head *entry; | |
855 | struct arm_addr *arm_addr = NULL; | |
856 | struct arm_request *arm_req = NULL; | |
857 | struct arm_response *arm_resp = NULL; | |
858 | int found = 0, size = 0, rcode = -1; | |
859 | struct arm_request_response *arm_req_resp = NULL; | |
860 | ||
a5c52df8 | 861 | DBGMSG("arm_read called by node: %X " |
1da177e4 LT |
862 | "addr: %4.4x %8.8x length: %Zu", nodeid, |
863 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), | |
864 | length); | |
4a9949d7 | 865 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
866 | hi = find_host_info(host); /* search address-entry */ |
867 | if (hi != NULL) { | |
868 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
869 | entry = fi->addr_list.next; | |
870 | while (entry != &(fi->addr_list)) { | |
871 | arm_addr = | |
872 | list_entry(entry, struct arm_addr, | |
873 | addr_list); | |
874 | if (((arm_addr->start) <= (addr)) | |
875 | && ((arm_addr->end) >= (addr + length))) { | |
876 | found = 1; | |
877 | break; | |
878 | } | |
879 | entry = entry->next; | |
880 | } | |
881 | if (found) { | |
882 | break; | |
883 | } | |
884 | } | |
885 | } | |
886 | rcode = -1; | |
887 | if (!found) { | |
888 | printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found" | |
889 | " -> rcode_address_error\n"); | |
4a9949d7 | 890 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
891 | return (RCODE_ADDRESS_ERROR); |
892 | } else { | |
893 | DBGMSG("arm_read addr_entry FOUND"); | |
894 | } | |
895 | if (arm_addr->rec_length < length) { | |
896 | DBGMSG("arm_read blocklength too big -> rcode_data_error"); | |
897 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ | |
898 | } | |
899 | if (rcode == -1) { | |
900 | if (arm_addr->access_rights & ARM_READ) { | |
901 | if (!(arm_addr->client_transactions & ARM_READ)) { | |
902 | memcpy(buffer, | |
903 | (arm_addr->addr_space_buffer) + (addr - | |
904 | (arm_addr-> | |
905 | start)), | |
906 | length); | |
907 | DBGMSG("arm_read -> (rcode_complete)"); | |
908 | rcode = RCODE_COMPLETE; | |
909 | } | |
910 | } else { | |
911 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
912 | DBGMSG("arm_read -> rcode_type_error (access denied)"); | |
913 | } | |
914 | } | |
915 | if (arm_addr->notification_options & ARM_READ) { | |
916 | DBGMSG("arm_read -> entering notification-section"); | |
54e6ecb2 | 917 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
918 | if (!req) { |
919 | DBGMSG("arm_read -> rcode_conflict_error"); | |
4a9949d7 | 920 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
921 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
922 | The request may be retried */ | |
923 | } | |
924 | if (rcode == RCODE_COMPLETE) { | |
925 | size = | |
926 | sizeof(struct arm_request) + | |
927 | sizeof(struct arm_response) + | |
928 | length * sizeof(byte_t) + | |
929 | sizeof(struct arm_request_response); | |
930 | } else { | |
931 | size = | |
932 | sizeof(struct arm_request) + | |
933 | sizeof(struct arm_response) + | |
934 | sizeof(struct arm_request_response); | |
935 | } | |
54e6ecb2 | 936 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
937 | if (!(req->data)) { |
938 | free_pending_request(req); | |
939 | DBGMSG("arm_read -> rcode_conflict_error"); | |
4a9949d7 | 940 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
941 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
942 | The request may be retried */ | |
943 | } | |
944 | req->free_data = 1; | |
945 | req->file_info = fi; | |
946 | req->req.type = RAW1394_REQ_ARM; | |
947 | req->req.generation = get_hpsb_generation(host); | |
948 | req->req.misc = | |
949 | (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF)); | |
950 | req->req.tag = arm_addr->arm_tag; | |
951 | req->req.recvb = arm_addr->recvb; | |
952 | req->req.length = size; | |
953 | arm_req_resp = (struct arm_request_response *)(req->data); | |
954 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
955 | (sizeof | |
956 | (struct | |
957 | arm_request_response))); | |
958 | arm_resp = | |
959 | (struct arm_response *)((byte_t *) (arm_req) + | |
960 | (sizeof(struct arm_request))); | |
961 | arm_req->buffer = NULL; | |
962 | arm_resp->buffer = NULL; | |
963 | if (rcode == RCODE_COMPLETE) { | |
964 | byte_t *buf = | |
965 | (byte_t *) arm_resp + sizeof(struct arm_response); | |
966 | memcpy(buf, | |
967 | (arm_addr->addr_space_buffer) + (addr - | |
968 | (arm_addr-> | |
969 | start)), | |
970 | length); | |
971 | arm_resp->buffer = | |
972 | int2ptr((arm_addr->recvb) + | |
973 | sizeof(struct arm_request_response) + | |
974 | sizeof(struct arm_request) + | |
975 | sizeof(struct arm_response)); | |
976 | } | |
977 | arm_resp->buffer_length = | |
978 | (rcode == RCODE_COMPLETE) ? length : 0; | |
979 | arm_resp->response_code = rcode; | |
980 | arm_req->buffer_length = 0; | |
981 | arm_req->generation = req->req.generation; | |
982 | arm_req->extended_transaction_code = 0; | |
983 | arm_req->destination_offset = addr; | |
984 | arm_req->source_nodeid = nodeid; | |
985 | arm_req->destination_nodeid = host->node_id; | |
986 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
987 | arm_req->tcode = (flags >> 4) & 0x0f; | |
988 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
989 | sizeof(struct | |
990 | arm_request_response)); | |
991 | arm_req_resp->response = | |
992 | int2ptr((arm_addr->recvb) + | |
993 | sizeof(struct arm_request_response) + | |
994 | sizeof(struct arm_request)); | |
995 | queue_complete_req(req); | |
996 | } | |
4a9949d7 | 997 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
998 | return (rcode); |
999 | } | |
1000 | ||
1001 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, | |
1002 | quadlet_t * data, u64 addr, size_t length, u16 flags) | |
1003 | { | |
4a9949d7 | 1004 | unsigned long irqflags; |
1da177e4 LT |
1005 | struct pending_request *req; |
1006 | struct host_info *hi; | |
1007 | struct file_info *fi = NULL; | |
1008 | struct list_head *entry; | |
1009 | struct arm_addr *arm_addr = NULL; | |
1010 | struct arm_request *arm_req = NULL; | |
1011 | struct arm_response *arm_resp = NULL; | |
1012 | int found = 0, size = 0, rcode = -1, length_conflict = 0; | |
1013 | struct arm_request_response *arm_req_resp = NULL; | |
1014 | ||
a5c52df8 | 1015 | DBGMSG("arm_write called by node: %X " |
1da177e4 LT |
1016 | "addr: %4.4x %8.8x length: %Zu", nodeid, |
1017 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), | |
1018 | length); | |
4a9949d7 | 1019 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1020 | hi = find_host_info(host); /* search address-entry */ |
1021 | if (hi != NULL) { | |
1022 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1023 | entry = fi->addr_list.next; | |
1024 | while (entry != &(fi->addr_list)) { | |
1025 | arm_addr = | |
1026 | list_entry(entry, struct arm_addr, | |
1027 | addr_list); | |
1028 | if (((arm_addr->start) <= (addr)) | |
1029 | && ((arm_addr->end) >= (addr + length))) { | |
1030 | found = 1; | |
1031 | break; | |
1032 | } | |
1033 | entry = entry->next; | |
1034 | } | |
1035 | if (found) { | |
1036 | break; | |
1037 | } | |
1038 | } | |
1039 | } | |
1040 | rcode = -1; | |
1041 | if (!found) { | |
1042 | printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found" | |
1043 | " -> rcode_address_error\n"); | |
4a9949d7 | 1044 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1045 | return (RCODE_ADDRESS_ERROR); |
1046 | } else { | |
1047 | DBGMSG("arm_write addr_entry FOUND"); | |
1048 | } | |
1049 | if (arm_addr->rec_length < length) { | |
1050 | DBGMSG("arm_write blocklength too big -> rcode_data_error"); | |
1051 | length_conflict = 1; | |
1052 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ | |
1053 | } | |
1054 | if (rcode == -1) { | |
1055 | if (arm_addr->access_rights & ARM_WRITE) { | |
1056 | if (!(arm_addr->client_transactions & ARM_WRITE)) { | |
1057 | memcpy((arm_addr->addr_space_buffer) + | |
1058 | (addr - (arm_addr->start)), data, | |
1059 | length); | |
1060 | DBGMSG("arm_write -> (rcode_complete)"); | |
1061 | rcode = RCODE_COMPLETE; | |
1062 | } | |
1063 | } else { | |
1064 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1065 | DBGMSG("arm_write -> rcode_type_error (access denied)"); | |
1066 | } | |
1067 | } | |
1068 | if (arm_addr->notification_options & ARM_WRITE) { | |
1069 | DBGMSG("arm_write -> entering notification-section"); | |
54e6ecb2 | 1070 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
1071 | if (!req) { |
1072 | DBGMSG("arm_write -> 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 my be retried */ | |
1076 | } | |
1077 | size = | |
1078 | sizeof(struct arm_request) + sizeof(struct arm_response) + | |
1079 | (length) * sizeof(byte_t) + | |
1080 | sizeof(struct arm_request_response); | |
54e6ecb2 | 1081 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1082 | if (!(req->data)) { |
1083 | free_pending_request(req); | |
1084 | DBGMSG("arm_write -> rcode_conflict_error"); | |
4a9949d7 | 1085 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1086 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1087 | The request may be retried */ | |
1088 | } | |
1089 | req->free_data = 1; | |
1090 | req->file_info = fi; | |
1091 | req->req.type = RAW1394_REQ_ARM; | |
1092 | req->req.generation = get_hpsb_generation(host); | |
1093 | req->req.misc = | |
1094 | (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF)); | |
1095 | req->req.tag = arm_addr->arm_tag; | |
1096 | req->req.recvb = arm_addr->recvb; | |
1097 | req->req.length = size; | |
1098 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1099 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1100 | (sizeof | |
1101 | (struct | |
1102 | arm_request_response))); | |
1103 | arm_resp = | |
1104 | (struct arm_response *)((byte_t *) (arm_req) + | |
1105 | (sizeof(struct arm_request))); | |
1106 | arm_resp->buffer = NULL; | |
1107 | memcpy((byte_t *) arm_resp + sizeof(struct arm_response), | |
1108 | data, length); | |
1109 | arm_req->buffer = int2ptr((arm_addr->recvb) + | |
1110 | sizeof(struct arm_request_response) + | |
1111 | sizeof(struct arm_request) + | |
1112 | sizeof(struct arm_response)); | |
1113 | arm_req->buffer_length = length; | |
1114 | arm_req->generation = req->req.generation; | |
1115 | arm_req->extended_transaction_code = 0; | |
1116 | arm_req->destination_offset = addr; | |
1117 | arm_req->source_nodeid = nodeid; | |
1118 | arm_req->destination_nodeid = destid; | |
1119 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1120 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1121 | arm_resp->buffer_length = 0; | |
1122 | arm_resp->response_code = rcode; | |
1123 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1124 | sizeof(struct | |
1125 | arm_request_response)); | |
1126 | arm_req_resp->response = | |
1127 | int2ptr((arm_addr->recvb) + | |
1128 | sizeof(struct arm_request_response) + | |
1129 | sizeof(struct arm_request)); | |
1130 | queue_complete_req(req); | |
1131 | } | |
4a9949d7 | 1132 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1133 | return (rcode); |
1134 | } | |
1135 | ||
1136 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, | |
1137 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, | |
1138 | u16 flags) | |
1139 | { | |
4a9949d7 | 1140 | unsigned long irqflags; |
1da177e4 LT |
1141 | struct pending_request *req; |
1142 | struct host_info *hi; | |
1143 | struct file_info *fi = NULL; | |
1144 | struct list_head *entry; | |
1145 | struct arm_addr *arm_addr = NULL; | |
1146 | struct arm_request *arm_req = NULL; | |
1147 | struct arm_response *arm_resp = NULL; | |
1148 | int found = 0, size = 0, rcode = -1; | |
1149 | quadlet_t old, new; | |
1150 | struct arm_request_response *arm_req_resp = NULL; | |
1151 | ||
1152 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || | |
1153 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { | |
1154 | DBGMSG("arm_lock called by node: %X " | |
1155 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X", | |
1156 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1157 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, | |
1158 | be32_to_cpu(data)); | |
1159 | } else { | |
1160 | DBGMSG("arm_lock called by node: %X " | |
1161 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X", | |
1162 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1163 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, | |
1164 | be32_to_cpu(data), be32_to_cpu(arg)); | |
1165 | } | |
4a9949d7 | 1166 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1167 | hi = find_host_info(host); /* search address-entry */ |
1168 | if (hi != NULL) { | |
1169 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1170 | entry = fi->addr_list.next; | |
1171 | while (entry != &(fi->addr_list)) { | |
1172 | arm_addr = | |
1173 | list_entry(entry, struct arm_addr, | |
1174 | addr_list); | |
1175 | if (((arm_addr->start) <= (addr)) | |
1176 | && ((arm_addr->end) >= | |
1177 | (addr + sizeof(*store)))) { | |
1178 | found = 1; | |
1179 | break; | |
1180 | } | |
1181 | entry = entry->next; | |
1182 | } | |
1183 | if (found) { | |
1184 | break; | |
1185 | } | |
1186 | } | |
1187 | } | |
1188 | rcode = -1; | |
1189 | if (!found) { | |
1190 | printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found" | |
1191 | " -> rcode_address_error\n"); | |
4a9949d7 | 1192 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1193 | return (RCODE_ADDRESS_ERROR); |
1194 | } else { | |
1195 | DBGMSG("arm_lock addr_entry FOUND"); | |
1196 | } | |
1197 | if (rcode == -1) { | |
1198 | if (arm_addr->access_rights & ARM_LOCK) { | |
1199 | if (!(arm_addr->client_transactions & ARM_LOCK)) { | |
1200 | memcpy(&old, | |
1201 | (arm_addr->addr_space_buffer) + (addr - | |
1202 | (arm_addr-> | |
1203 | start)), | |
1204 | sizeof(old)); | |
1205 | switch (ext_tcode) { | |
1206 | case (EXTCODE_MASK_SWAP): | |
1207 | new = data | (old & ~arg); | |
1208 | break; | |
1209 | case (EXTCODE_COMPARE_SWAP): | |
1210 | if (old == arg) { | |
1211 | new = data; | |
1212 | } else { | |
1213 | new = old; | |
1214 | } | |
1215 | break; | |
1216 | case (EXTCODE_FETCH_ADD): | |
1217 | new = | |
1218 | cpu_to_be32(be32_to_cpu(data) + | |
1219 | be32_to_cpu(old)); | |
1220 | break; | |
1221 | case (EXTCODE_LITTLE_ADD): | |
1222 | new = | |
1223 | cpu_to_le32(le32_to_cpu(data) + | |
1224 | le32_to_cpu(old)); | |
1225 | break; | |
1226 | case (EXTCODE_BOUNDED_ADD): | |
1227 | if (old != arg) { | |
1228 | new = | |
1229 | cpu_to_be32(be32_to_cpu | |
1230 | (data) + | |
1231 | be32_to_cpu | |
1232 | (old)); | |
1233 | } else { | |
1234 | new = old; | |
1235 | } | |
1236 | break; | |
1237 | case (EXTCODE_WRAP_ADD): | |
1238 | if (old != arg) { | |
1239 | new = | |
1240 | cpu_to_be32(be32_to_cpu | |
1241 | (data) + | |
1242 | be32_to_cpu | |
1243 | (old)); | |
1244 | } else { | |
1245 | new = data; | |
1246 | } | |
1247 | break; | |
1248 | default: | |
1249 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1250 | printk(KERN_ERR | |
1251 | "raw1394: arm_lock FAILED " | |
1252 | "ext_tcode not allowed -> rcode_type_error\n"); | |
1253 | break; | |
1254 | } /*switch */ | |
1255 | if (rcode == -1) { | |
1256 | DBGMSG("arm_lock -> (rcode_complete)"); | |
1257 | rcode = RCODE_COMPLETE; | |
1258 | memcpy(store, &old, sizeof(*store)); | |
1259 | memcpy((arm_addr->addr_space_buffer) + | |
1260 | (addr - (arm_addr->start)), | |
1261 | &new, sizeof(*store)); | |
1262 | } | |
1263 | } | |
1264 | } else { | |
1265 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1266 | DBGMSG("arm_lock -> rcode_type_error (access denied)"); | |
1267 | } | |
1268 | } | |
1269 | if (arm_addr->notification_options & ARM_LOCK) { | |
1270 | byte_t *buf1, *buf2; | |
1271 | DBGMSG("arm_lock -> entering notification-section"); | |
54e6ecb2 | 1272 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
1273 | if (!req) { |
1274 | DBGMSG("arm_lock -> rcode_conflict_error"); | |
4a9949d7 | 1275 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1276 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1277 | The request may be retried */ | |
1278 | } | |
1279 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ | |
54e6ecb2 | 1280 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1281 | if (!(req->data)) { |
1282 | free_pending_request(req); | |
1283 | DBGMSG("arm_lock -> rcode_conflict_error"); | |
4a9949d7 | 1284 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1285 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
1286 | The request may be retried */ | |
1287 | } | |
1288 | req->free_data = 1; | |
1289 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1290 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1291 | (sizeof | |
1292 | (struct | |
1293 | arm_request_response))); | |
1294 | arm_resp = | |
1295 | (struct arm_response *)((byte_t *) (arm_req) + | |
1296 | (sizeof(struct arm_request))); | |
1297 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); | |
1298 | buf2 = buf1 + 2 * sizeof(*store); | |
1299 | if ((ext_tcode == EXTCODE_FETCH_ADD) || | |
1300 | (ext_tcode == EXTCODE_LITTLE_ADD)) { | |
1301 | arm_req->buffer_length = sizeof(*store); | |
1302 | memcpy(buf1, &data, sizeof(*store)); | |
1303 | ||
1304 | } else { | |
1305 | arm_req->buffer_length = 2 * sizeof(*store); | |
1306 | memcpy(buf1, &arg, sizeof(*store)); | |
1307 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); | |
1308 | } | |
1309 | if (rcode == RCODE_COMPLETE) { | |
1310 | arm_resp->buffer_length = sizeof(*store); | |
1311 | memcpy(buf2, &old, sizeof(*store)); | |
1312 | } else { | |
1313 | arm_resp->buffer_length = 0; | |
1314 | } | |
1315 | req->file_info = fi; | |
1316 | req->req.type = RAW1394_REQ_ARM; | |
1317 | req->req.generation = get_hpsb_generation(host); | |
1318 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | | |
1319 | (ARM_LOCK & 0xFF)); | |
1320 | req->req.tag = arm_addr->arm_tag; | |
1321 | req->req.recvb = arm_addr->recvb; | |
1322 | req->req.length = size; | |
1323 | arm_req->generation = req->req.generation; | |
1324 | arm_req->extended_transaction_code = ext_tcode; | |
1325 | arm_req->destination_offset = addr; | |
1326 | arm_req->source_nodeid = nodeid; | |
1327 | arm_req->destination_nodeid = host->node_id; | |
1328 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1329 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1330 | arm_resp->response_code = rcode; | |
1331 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1332 | sizeof(struct | |
1333 | arm_request_response)); | |
1334 | arm_req_resp->response = | |
1335 | int2ptr((arm_addr->recvb) + | |
1336 | sizeof(struct arm_request_response) + | |
1337 | sizeof(struct arm_request)); | |
1338 | arm_req->buffer = | |
1339 | int2ptr((arm_addr->recvb) + | |
1340 | sizeof(struct arm_request_response) + | |
1341 | sizeof(struct arm_request) + | |
1342 | sizeof(struct arm_response)); | |
1343 | arm_resp->buffer = | |
1344 | int2ptr((arm_addr->recvb) + | |
1345 | sizeof(struct arm_request_response) + | |
1346 | sizeof(struct arm_request) + | |
1347 | sizeof(struct arm_response) + 2 * sizeof(*store)); | |
1348 | queue_complete_req(req); | |
1349 | } | |
4a9949d7 | 1350 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1351 | return (rcode); |
1352 | } | |
1353 | ||
1354 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, | |
1355 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, | |
1356 | u16 flags) | |
1357 | { | |
4a9949d7 | 1358 | unsigned long irqflags; |
1da177e4 LT |
1359 | struct pending_request *req; |
1360 | struct host_info *hi; | |
1361 | struct file_info *fi = NULL; | |
1362 | struct list_head *entry; | |
1363 | struct arm_addr *arm_addr = NULL; | |
1364 | struct arm_request *arm_req = NULL; | |
1365 | struct arm_response *arm_resp = NULL; | |
1366 | int found = 0, size = 0, rcode = -1; | |
1367 | octlet_t old, new; | |
1368 | struct arm_request_response *arm_req_resp = NULL; | |
1369 | ||
1370 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || | |
1371 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { | |
1372 | DBGMSG("arm_lock64 called by node: %X " | |
1373 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ", | |
1374 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1375 | (u32) (addr & 0xFFFFFFFF), | |
1376 | ext_tcode & 0xFF, | |
1377 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), | |
1378 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF)); | |
1379 | } else { | |
1380 | DBGMSG("arm_lock64 called by node: %X " | |
1381 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: " | |
1382 | "%8.8X %8.8X ", | |
1383 | nodeid, (u16) ((addr >> 32) & 0xFFFF), | |
1384 | (u32) (addr & 0xFFFFFFFF), | |
1385 | ext_tcode & 0xFF, | |
1386 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), | |
1387 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF), | |
1388 | (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF), | |
1389 | (u32) (be64_to_cpu(arg) & 0xFFFFFFFF)); | |
1390 | } | |
4a9949d7 | 1391 | spin_lock_irqsave(&host_info_lock, irqflags); |
1da177e4 LT |
1392 | hi = find_host_info(host); /* search addressentry in file_info's for host */ |
1393 | if (hi != NULL) { | |
1394 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
1395 | entry = fi->addr_list.next; | |
1396 | while (entry != &(fi->addr_list)) { | |
1397 | arm_addr = | |
1398 | list_entry(entry, struct arm_addr, | |
1399 | addr_list); | |
1400 | if (((arm_addr->start) <= (addr)) | |
1401 | && ((arm_addr->end) >= | |
1402 | (addr + sizeof(*store)))) { | |
1403 | found = 1; | |
1404 | break; | |
1405 | } | |
1406 | entry = entry->next; | |
1407 | } | |
1408 | if (found) { | |
1409 | break; | |
1410 | } | |
1411 | } | |
1412 | } | |
1413 | rcode = -1; | |
1414 | if (!found) { | |
1415 | printk(KERN_ERR | |
1416 | "raw1394: arm_lock64 FAILED addr_entry not found" | |
1417 | " -> rcode_address_error\n"); | |
4a9949d7 | 1418 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1419 | return (RCODE_ADDRESS_ERROR); |
1420 | } else { | |
1421 | DBGMSG("arm_lock64 addr_entry FOUND"); | |
1422 | } | |
1423 | if (rcode == -1) { | |
1424 | if (arm_addr->access_rights & ARM_LOCK) { | |
1425 | if (!(arm_addr->client_transactions & ARM_LOCK)) { | |
1426 | memcpy(&old, | |
1427 | (arm_addr->addr_space_buffer) + (addr - | |
1428 | (arm_addr-> | |
1429 | start)), | |
1430 | sizeof(old)); | |
1431 | switch (ext_tcode) { | |
1432 | case (EXTCODE_MASK_SWAP): | |
1433 | new = data | (old & ~arg); | |
1434 | break; | |
1435 | case (EXTCODE_COMPARE_SWAP): | |
1436 | if (old == arg) { | |
1437 | new = data; | |
1438 | } else { | |
1439 | new = old; | |
1440 | } | |
1441 | break; | |
1442 | case (EXTCODE_FETCH_ADD): | |
1443 | new = | |
1444 | cpu_to_be64(be64_to_cpu(data) + | |
1445 | be64_to_cpu(old)); | |
1446 | break; | |
1447 | case (EXTCODE_LITTLE_ADD): | |
1448 | new = | |
1449 | cpu_to_le64(le64_to_cpu(data) + | |
1450 | le64_to_cpu(old)); | |
1451 | break; | |
1452 | case (EXTCODE_BOUNDED_ADD): | |
1453 | if (old != arg) { | |
1454 | new = | |
1455 | cpu_to_be64(be64_to_cpu | |
1456 | (data) + | |
1457 | be64_to_cpu | |
1458 | (old)); | |
1459 | } else { | |
1460 | new = old; | |
1461 | } | |
1462 | break; | |
1463 | case (EXTCODE_WRAP_ADD): | |
1464 | if (old != arg) { | |
1465 | new = | |
1466 | cpu_to_be64(be64_to_cpu | |
1467 | (data) + | |
1468 | be64_to_cpu | |
1469 | (old)); | |
1470 | } else { | |
1471 | new = data; | |
1472 | } | |
1473 | break; | |
1474 | default: | |
1475 | printk(KERN_ERR | |
1476 | "raw1394: arm_lock64 FAILED " | |
1477 | "ext_tcode not allowed -> rcode_type_error\n"); | |
1478 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1479 | break; | |
1480 | } /*switch */ | |
1481 | if (rcode == -1) { | |
1482 | DBGMSG | |
1483 | ("arm_lock64 -> (rcode_complete)"); | |
1484 | rcode = RCODE_COMPLETE; | |
1485 | memcpy(store, &old, sizeof(*store)); | |
1486 | memcpy((arm_addr->addr_space_buffer) + | |
1487 | (addr - (arm_addr->start)), | |
1488 | &new, sizeof(*store)); | |
1489 | } | |
1490 | } | |
1491 | } else { | |
1492 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ | |
1493 | DBGMSG | |
1494 | ("arm_lock64 -> rcode_type_error (access denied)"); | |
1495 | } | |
1496 | } | |
1497 | if (arm_addr->notification_options & ARM_LOCK) { | |
1498 | byte_t *buf1, *buf2; | |
1499 | DBGMSG("arm_lock64 -> entering notification-section"); | |
54e6ecb2 | 1500 | req = __alloc_pending_request(GFP_ATOMIC); |
1da177e4 | 1501 | if (!req) { |
4a9949d7 | 1502 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1503 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
1504 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. | |
1505 | The request may be retried */ | |
1506 | } | |
1507 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ | |
54e6ecb2 | 1508 | req->data = kmalloc(size, GFP_ATOMIC); |
1da177e4 LT |
1509 | if (!(req->data)) { |
1510 | free_pending_request(req); | |
4a9949d7 | 1511 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1512 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
1513 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. | |
1514 | The request may be retried */ | |
1515 | } | |
1516 | req->free_data = 1; | |
1517 | arm_req_resp = (struct arm_request_response *)(req->data); | |
1518 | arm_req = (struct arm_request *)((byte_t *) (req->data) + | |
1519 | (sizeof | |
1520 | (struct | |
1521 | arm_request_response))); | |
1522 | arm_resp = | |
1523 | (struct arm_response *)((byte_t *) (arm_req) + | |
1524 | (sizeof(struct arm_request))); | |
1525 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); | |
1526 | buf2 = buf1 + 2 * sizeof(*store); | |
1527 | if ((ext_tcode == EXTCODE_FETCH_ADD) || | |
1528 | (ext_tcode == EXTCODE_LITTLE_ADD)) { | |
1529 | arm_req->buffer_length = sizeof(*store); | |
1530 | memcpy(buf1, &data, sizeof(*store)); | |
1531 | ||
1532 | } else { | |
1533 | arm_req->buffer_length = 2 * sizeof(*store); | |
1534 | memcpy(buf1, &arg, sizeof(*store)); | |
1535 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); | |
1536 | } | |
1537 | if (rcode == RCODE_COMPLETE) { | |
1538 | arm_resp->buffer_length = sizeof(*store); | |
1539 | memcpy(buf2, &old, sizeof(*store)); | |
1540 | } else { | |
1541 | arm_resp->buffer_length = 0; | |
1542 | } | |
1543 | req->file_info = fi; | |
1544 | req->req.type = RAW1394_REQ_ARM; | |
1545 | req->req.generation = get_hpsb_generation(host); | |
1546 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | | |
1547 | (ARM_LOCK & 0xFF)); | |
1548 | req->req.tag = arm_addr->arm_tag; | |
1549 | req->req.recvb = arm_addr->recvb; | |
1550 | req->req.length = size; | |
1551 | arm_req->generation = req->req.generation; | |
1552 | arm_req->extended_transaction_code = ext_tcode; | |
1553 | arm_req->destination_offset = addr; | |
1554 | arm_req->source_nodeid = nodeid; | |
1555 | arm_req->destination_nodeid = host->node_id; | |
1556 | arm_req->tlabel = (flags >> 10) & 0x3f; | |
1557 | arm_req->tcode = (flags >> 4) & 0x0f; | |
1558 | arm_resp->response_code = rcode; | |
1559 | arm_req_resp->request = int2ptr((arm_addr->recvb) + | |
1560 | sizeof(struct | |
1561 | arm_request_response)); | |
1562 | arm_req_resp->response = | |
1563 | int2ptr((arm_addr->recvb) + | |
1564 | sizeof(struct arm_request_response) + | |
1565 | sizeof(struct arm_request)); | |
1566 | arm_req->buffer = | |
1567 | int2ptr((arm_addr->recvb) + | |
1568 | sizeof(struct arm_request_response) + | |
1569 | sizeof(struct arm_request) + | |
1570 | sizeof(struct arm_response)); | |
1571 | arm_resp->buffer = | |
1572 | int2ptr((arm_addr->recvb) + | |
1573 | sizeof(struct arm_request_response) + | |
1574 | sizeof(struct arm_request) + | |
1575 | sizeof(struct arm_response) + 2 * sizeof(*store)); | |
1576 | queue_complete_req(req); | |
1577 | } | |
4a9949d7 | 1578 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
1da177e4 LT |
1579 | return (rcode); |
1580 | } | |
1581 | ||
1582 | static int arm_register(struct file_info *fi, struct pending_request *req) | |
1583 | { | |
1584 | int retval; | |
1585 | struct arm_addr *addr; | |
1586 | struct host_info *hi; | |
1587 | struct file_info *fi_hlp = NULL; | |
1588 | struct list_head *entry; | |
1589 | struct arm_addr *arm_addr = NULL; | |
1590 | int same_host, another_host; | |
1591 | unsigned long flags; | |
1592 | ||
1593 | DBGMSG("arm_register called " | |
1594 | "addr(Offset): %8.8x %8.8x length: %u " | |
1595 | "rights: %2.2X notify: %2.2X " | |
1596 | "max_blk_len: %4.4X", | |
1597 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1598 | (u32) (req->req.address & 0xFFFFFFFF), | |
1599 | req->req.length, ((req->req.misc >> 8) & 0xFF), | |
1600 | (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF)); | |
1601 | /* check addressrange */ | |
1602 | if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) || | |
1603 | (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) != | |
1604 | 0)) { | |
1605 | req->req.length = 0; | |
1606 | return (-EINVAL); | |
1607 | } | |
1608 | /* addr-list-entry for fileinfo */ | |
e94b1766 | 1609 | addr = kmalloc(sizeof(*addr), GFP_KERNEL); |
1da177e4 LT |
1610 | if (!addr) { |
1611 | req->req.length = 0; | |
1612 | return (-ENOMEM); | |
1613 | } | |
1614 | /* allocation of addr_space_buffer */ | |
8551158a | 1615 | addr->addr_space_buffer = vmalloc(req->req.length); |
1da177e4 LT |
1616 | if (!(addr->addr_space_buffer)) { |
1617 | kfree(addr); | |
1618 | req->req.length = 0; | |
1619 | return (-ENOMEM); | |
1620 | } | |
1621 | /* initialization of addr_space_buffer */ | |
1622 | if ((req->req.sendb) == (unsigned long)NULL) { | |
1623 | /* init: set 0 */ | |
1624 | memset(addr->addr_space_buffer, 0, req->req.length); | |
1625 | } else { | |
1626 | /* init: user -> kernel */ | |
1627 | if (copy_from_user | |
1628 | (addr->addr_space_buffer, int2ptr(req->req.sendb), | |
1629 | req->req.length)) { | |
1630 | vfree(addr->addr_space_buffer); | |
1631 | kfree(addr); | |
1632 | return (-EFAULT); | |
1633 | } | |
1634 | } | |
1635 | INIT_LIST_HEAD(&addr->addr_list); | |
1636 | addr->arm_tag = req->req.tag; | |
1637 | addr->start = req->req.address; | |
1638 | addr->end = req->req.address + req->req.length; | |
1639 | addr->access_rights = (u8) (req->req.misc & 0x0F); | |
1640 | addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F); | |
1641 | addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F); | |
1642 | addr->access_rights |= addr->client_transactions; | |
1643 | addr->notification_options |= addr->client_transactions; | |
1644 | addr->recvb = req->req.recvb; | |
1645 | addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF); | |
3253b669 | 1646 | |
1da177e4 LT |
1647 | spin_lock_irqsave(&host_info_lock, flags); |
1648 | hi = find_host_info(fi->host); | |
1649 | same_host = 0; | |
1650 | another_host = 0; | |
1651 | /* same host with address-entry containing same addressrange ? */ | |
1652 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1653 | entry = fi_hlp->addr_list.next; | |
1654 | while (entry != &(fi_hlp->addr_list)) { | |
1655 | arm_addr = | |
1656 | list_entry(entry, struct arm_addr, addr_list); | |
1657 | if ((arm_addr->start == addr->start) | |
1658 | && (arm_addr->end == addr->end)) { | |
1659 | DBGMSG("same host ownes same " | |
1660 | "addressrange -> EALREADY"); | |
1661 | same_host = 1; | |
1662 | break; | |
1663 | } | |
1664 | entry = entry->next; | |
1665 | } | |
1666 | if (same_host) { | |
1667 | break; | |
1668 | } | |
1669 | } | |
1670 | if (same_host) { | |
1671 | /* addressrange occupied by same host */ | |
3253b669 | 1672 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1673 | vfree(addr->addr_space_buffer); |
1674 | kfree(addr); | |
1da177e4 LT |
1675 | return (-EALREADY); |
1676 | } | |
1677 | /* another host with valid address-entry containing same addressrange */ | |
1678 | list_for_each_entry(hi, &host_info_list, list) { | |
1679 | if (hi->host != fi->host) { | |
1680 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1681 | entry = fi_hlp->addr_list.next; | |
1682 | while (entry != &(fi_hlp->addr_list)) { | |
1683 | arm_addr = | |
1684 | list_entry(entry, struct arm_addr, | |
1685 | addr_list); | |
1686 | if ((arm_addr->start == addr->start) | |
1687 | && (arm_addr->end == addr->end)) { | |
1688 | DBGMSG | |
1689 | ("another host ownes same " | |
1690 | "addressrange"); | |
1691 | another_host = 1; | |
1692 | break; | |
1693 | } | |
1694 | entry = entry->next; | |
1695 | } | |
1696 | if (another_host) { | |
1697 | break; | |
1698 | } | |
1699 | } | |
1700 | } | |
1701 | } | |
3253b669 SR |
1702 | spin_unlock_irqrestore(&host_info_lock, flags); |
1703 | ||
1da177e4 LT |
1704 | if (another_host) { |
1705 | DBGMSG("another hosts entry is valid -> SUCCESS"); | |
1706 | if (copy_to_user(int2ptr(req->req.recvb), | |
1707 | &addr->start, sizeof(u64))) { | |
1708 | printk(KERN_ERR "raw1394: arm_register failed " | |
1709 | " address-range-entry is invalid -> EFAULT !!!\n"); | |
1710 | vfree(addr->addr_space_buffer); | |
1711 | kfree(addr); | |
1da177e4 LT |
1712 | return (-EFAULT); |
1713 | } | |
1714 | free_pending_request(req); /* immediate success or fail */ | |
1715 | /* INSERT ENTRY */ | |
3253b669 | 1716 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 LT |
1717 | list_add_tail(&addr->addr_list, &fi->addr_list); |
1718 | spin_unlock_irqrestore(&host_info_lock, flags); | |
883b97ea | 1719 | return 0; |
1da177e4 LT |
1720 | } |
1721 | retval = | |
1722 | hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops, | |
1723 | req->req.address, | |
1724 | req->req.address + req->req.length); | |
1725 | if (retval) { | |
1726 | /* INSERT ENTRY */ | |
3253b669 | 1727 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 1728 | list_add_tail(&addr->addr_list, &fi->addr_list); |
3253b669 | 1729 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1730 | } else { |
1731 | DBGMSG("arm_register failed errno: %d \n", retval); | |
1732 | vfree(addr->addr_space_buffer); | |
1733 | kfree(addr); | |
1da177e4 LT |
1734 | return (-EALREADY); |
1735 | } | |
1da177e4 | 1736 | free_pending_request(req); /* immediate success or fail */ |
883b97ea | 1737 | return 0; |
1da177e4 LT |
1738 | } |
1739 | ||
1740 | static int arm_unregister(struct file_info *fi, struct pending_request *req) | |
1741 | { | |
1742 | int found = 0; | |
1743 | int retval = 0; | |
1744 | struct list_head *entry; | |
1745 | struct arm_addr *addr = NULL; | |
1746 | struct host_info *hi; | |
1747 | struct file_info *fi_hlp = NULL; | |
1748 | struct arm_addr *arm_addr = NULL; | |
1749 | int another_host; | |
1750 | unsigned long flags; | |
1751 | ||
1752 | DBGMSG("arm_Unregister called addr(Offset): " | |
1753 | "%8.8x %8.8x", | |
1754 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1755 | (u32) (req->req.address & 0xFFFFFFFF)); | |
1756 | spin_lock_irqsave(&host_info_lock, flags); | |
1757 | /* get addr */ | |
1758 | entry = fi->addr_list.next; | |
1759 | while (entry != &(fi->addr_list)) { | |
1760 | addr = list_entry(entry, struct arm_addr, addr_list); | |
1761 | if (addr->start == req->req.address) { | |
1762 | found = 1; | |
1763 | break; | |
1764 | } | |
1765 | entry = entry->next; | |
1766 | } | |
1767 | if (!found) { | |
1768 | DBGMSG("arm_Unregister addr not found"); | |
1769 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1770 | return (-EINVAL); | |
1771 | } | |
1772 | DBGMSG("arm_Unregister addr found"); | |
1773 | another_host = 0; | |
1774 | /* another host with valid address-entry containing | |
1775 | same addressrange */ | |
1776 | list_for_each_entry(hi, &host_info_list, list) { | |
1777 | if (hi->host != fi->host) { | |
1778 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { | |
1779 | entry = fi_hlp->addr_list.next; | |
1780 | while (entry != &(fi_hlp->addr_list)) { | |
1781 | arm_addr = list_entry(entry, | |
1782 | struct arm_addr, | |
1783 | addr_list); | |
1784 | if (arm_addr->start == addr->start) { | |
1785 | DBGMSG("another host ownes " | |
1786 | "same addressrange"); | |
1787 | another_host = 1; | |
1788 | break; | |
1789 | } | |
1790 | entry = entry->next; | |
1791 | } | |
1792 | if (another_host) { | |
1793 | break; | |
1794 | } | |
1795 | } | |
1796 | } | |
1797 | } | |
1798 | if (another_host) { | |
1799 | DBGMSG("delete entry from list -> success"); | |
1800 | list_del(&addr->addr_list); | |
3253b669 | 1801 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1802 | vfree(addr->addr_space_buffer); |
1803 | kfree(addr); | |
1804 | free_pending_request(req); /* immediate success or fail */ | |
883b97ea | 1805 | return 0; |
1da177e4 LT |
1806 | } |
1807 | retval = | |
1808 | hpsb_unregister_addrspace(&raw1394_highlevel, fi->host, | |
1809 | addr->start); | |
1810 | if (!retval) { | |
1811 | printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n"); | |
1812 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1813 | return (-EINVAL); | |
1814 | } | |
1815 | DBGMSG("delete entry from list -> success"); | |
1816 | list_del(&addr->addr_list); | |
1817 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1818 | vfree(addr->addr_space_buffer); | |
1819 | kfree(addr); | |
1820 | free_pending_request(req); /* immediate success or fail */ | |
883b97ea | 1821 | return 0; |
1da177e4 LT |
1822 | } |
1823 | ||
1824 | /* Copy data from ARM buffer(s) to user buffer. */ | |
1825 | static int arm_get_buf(struct file_info *fi, struct pending_request *req) | |
1826 | { | |
1827 | struct arm_addr *arm_addr = NULL; | |
1828 | unsigned long flags; | |
1829 | unsigned long offset; | |
1830 | ||
1831 | struct list_head *entry; | |
1832 | ||
1833 | DBGMSG("arm_get_buf " | |
1834 | "addr(Offset): %04X %08X length: %u", | |
1835 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1836 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); | |
1837 | ||
1838 | spin_lock_irqsave(&host_info_lock, flags); | |
1839 | entry = fi->addr_list.next; | |
1840 | while (entry != &(fi->addr_list)) { | |
1841 | arm_addr = list_entry(entry, struct arm_addr, addr_list); | |
1842 | if ((arm_addr->start <= req->req.address) && | |
1843 | (arm_addr->end > req->req.address)) { | |
1844 | if (req->req.address + req->req.length <= arm_addr->end) { | |
1845 | offset = req->req.address - arm_addr->start; | |
3253b669 | 1846 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1847 | |
1848 | DBGMSG | |
1849 | ("arm_get_buf copy_to_user( %08X, %p, %u )", | |
1850 | (u32) req->req.recvb, | |
1851 | arm_addr->addr_space_buffer + offset, | |
1852 | (u32) req->req.length); | |
1da177e4 LT |
1853 | if (copy_to_user |
1854 | (int2ptr(req->req.recvb), | |
1855 | arm_addr->addr_space_buffer + offset, | |
3253b669 | 1856 | req->req.length)) |
1da177e4 | 1857 | return (-EFAULT); |
1da177e4 | 1858 | |
1da177e4 LT |
1859 | /* We have to free the request, because we |
1860 | * queue no response, and therefore nobody | |
1861 | * will free it. */ | |
1862 | free_pending_request(req); | |
883b97ea | 1863 | return 0; |
1da177e4 LT |
1864 | } else { |
1865 | DBGMSG("arm_get_buf request exceeded mapping"); | |
1866 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1867 | return (-EINVAL); | |
1868 | } | |
1869 | } | |
1870 | entry = entry->next; | |
1871 | } | |
1872 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1873 | return (-EINVAL); | |
1874 | } | |
1875 | ||
1876 | /* Copy data from user buffer to ARM buffer(s). */ | |
1877 | static int arm_set_buf(struct file_info *fi, struct pending_request *req) | |
1878 | { | |
1879 | struct arm_addr *arm_addr = NULL; | |
1880 | unsigned long flags; | |
1881 | unsigned long offset; | |
1882 | ||
1883 | struct list_head *entry; | |
1884 | ||
1885 | DBGMSG("arm_set_buf " | |
1886 | "addr(Offset): %04X %08X length: %u", | |
1887 | (u32) ((req->req.address >> 32) & 0xFFFF), | |
1888 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); | |
1889 | ||
1890 | spin_lock_irqsave(&host_info_lock, flags); | |
1891 | entry = fi->addr_list.next; | |
1892 | while (entry != &(fi->addr_list)) { | |
1893 | arm_addr = list_entry(entry, struct arm_addr, addr_list); | |
1894 | if ((arm_addr->start <= req->req.address) && | |
1895 | (arm_addr->end > req->req.address)) { | |
1896 | if (req->req.address + req->req.length <= arm_addr->end) { | |
1897 | offset = req->req.address - arm_addr->start; | |
3253b669 | 1898 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
1899 | |
1900 | DBGMSG | |
1901 | ("arm_set_buf copy_from_user( %p, %08X, %u )", | |
1902 | arm_addr->addr_space_buffer + offset, | |
1903 | (u32) req->req.sendb, | |
1904 | (u32) req->req.length); | |
1da177e4 LT |
1905 | if (copy_from_user |
1906 | (arm_addr->addr_space_buffer + offset, | |
1907 | int2ptr(req->req.sendb), | |
3253b669 | 1908 | req->req.length)) |
1da177e4 | 1909 | return (-EFAULT); |
1da177e4 | 1910 | |
3253b669 SR |
1911 | /* We have to free the request, because we |
1912 | * queue no response, and therefore nobody | |
1913 | * will free it. */ | |
1914 | free_pending_request(req); | |
883b97ea | 1915 | return 0; |
1da177e4 LT |
1916 | } else { |
1917 | DBGMSG("arm_set_buf request exceeded mapping"); | |
1918 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1919 | return (-EINVAL); | |
1920 | } | |
1921 | } | |
1922 | entry = entry->next; | |
1923 | } | |
1924 | spin_unlock_irqrestore(&host_info_lock, flags); | |
1925 | return (-EINVAL); | |
1926 | } | |
1927 | ||
1928 | static int reset_notification(struct file_info *fi, struct pending_request *req) | |
1929 | { | |
1930 | DBGMSG("reset_notification called - switch %s ", | |
1931 | (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON"); | |
1932 | if ((req->req.misc == RAW1394_NOTIFY_OFF) || | |
1933 | (req->req.misc == RAW1394_NOTIFY_ON)) { | |
1934 | fi->notification = (u8) req->req.misc; | |
1935 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
883b97ea | 1936 | return 0; |
1da177e4 LT |
1937 | } |
1938 | /* error EINVAL (22) invalid argument */ | |
1939 | return (-EINVAL); | |
1940 | } | |
1941 | ||
1942 | static int write_phypacket(struct file_info *fi, struct pending_request *req) | |
1943 | { | |
1944 | struct hpsb_packet *packet = NULL; | |
1945 | int retval = 0; | |
1946 | quadlet_t data; | |
4a9949d7 | 1947 | unsigned long flags; |
1da177e4 LT |
1948 | |
1949 | data = be32_to_cpu((u32) req->req.sendb); | |
1950 | DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data); | |
1951 | packet = hpsb_make_phypacket(fi->host, data); | |
1952 | if (!packet) | |
1953 | return -ENOMEM; | |
1954 | req->req.length = 0; | |
1955 | req->packet = packet; | |
1956 | hpsb_set_packet_complete_task(packet, | |
1957 | (void (*)(void *))queue_complete_cb, req); | |
4a9949d7 | 1958 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 | 1959 | list_add_tail(&req->list, &fi->req_pending); |
4a9949d7 | 1960 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
1961 | packet->generation = req->req.generation; |
1962 | retval = hpsb_send_packet(packet); | |
1963 | DBGMSG("write_phypacket send_packet called => retval: %d ", retval); | |
1964 | if (retval < 0) { | |
1965 | req->req.error = RAW1394_ERROR_SEND_ERROR; | |
1966 | req->req.length = 0; | |
1967 | queue_complete_req(req); | |
1968 | } | |
883b97ea | 1969 | return 0; |
1da177e4 LT |
1970 | } |
1971 | ||
1972 | static int get_config_rom(struct file_info *fi, struct pending_request *req) | |
1973 | { | |
883b97ea | 1974 | int ret = 0; |
e94b1766 | 1975 | quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL); |
1da177e4 LT |
1976 | int status; |
1977 | ||
1978 | if (!data) | |
1979 | return -ENOMEM; | |
1980 | ||
1981 | status = | |
1982 | csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET, | |
1983 | data, req->req.length); | |
1984 | if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length)) | |
1985 | ret = -EFAULT; | |
1986 | if (copy_to_user | |
1987 | (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len, | |
1988 | sizeof(fi->host->csr.rom->cache_head->len))) | |
1989 | ret = -EFAULT; | |
1990 | if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation, | |
1991 | sizeof(fi->host->csr.generation))) | |
1992 | ret = -EFAULT; | |
1993 | if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status))) | |
1994 | ret = -EFAULT; | |
1995 | kfree(data); | |
1996 | if (ret >= 0) { | |
1997 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
1998 | } | |
1999 | return ret; | |
2000 | } | |
2001 | ||
2002 | static int update_config_rom(struct file_info *fi, struct pending_request *req) | |
2003 | { | |
883b97ea | 2004 | int ret = 0; |
e94b1766 | 2005 | quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL); |
1da177e4 LT |
2006 | if (!data) |
2007 | return -ENOMEM; | |
2008 | if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) { | |
2009 | ret = -EFAULT; | |
2010 | } else { | |
2011 | int status = hpsb_update_config_rom(fi->host, | |
2012 | data, req->req.length, | |
2013 | (unsigned char)req->req. | |
2014 | misc); | |
2015 | if (copy_to_user | |
2016 | (int2ptr(req->req.recvb), &status, sizeof(status))) | |
2017 | ret = -ENOMEM; | |
2018 | } | |
2019 | kfree(data); | |
2020 | if (ret >= 0) { | |
2021 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
2022 | fi->cfgrom_upd = 1; | |
2023 | } | |
2024 | return ret; | |
2025 | } | |
2026 | ||
2027 | static int modify_config_rom(struct file_info *fi, struct pending_request *req) | |
2028 | { | |
2029 | struct csr1212_keyval *kv; | |
2030 | struct csr1212_csr_rom_cache *cache; | |
2031 | struct csr1212_dentry *dentry; | |
2032 | u32 dr; | |
2033 | int ret = 0; | |
2034 | ||
2035 | if (req->req.misc == ~0) { | |
2036 | if (req->req.length == 0) | |
2037 | return -EINVAL; | |
2038 | ||
2039 | /* Find an unused slot */ | |
2040 | for (dr = 0; | |
2041 | dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr]; | |
2042 | dr++) ; | |
2043 | ||
2044 | if (dr == RAW1394_MAX_USER_CSR_DIRS) | |
2045 | return -ENOMEM; | |
2046 | ||
2047 | fi->csr1212_dirs[dr] = | |
2048 | csr1212_new_directory(CSR1212_KV_ID_VENDOR); | |
2049 | if (!fi->csr1212_dirs[dr]) | |
2050 | return -ENOMEM; | |
2051 | } else { | |
2052 | dr = req->req.misc; | |
2053 | if (!fi->csr1212_dirs[dr]) | |
2054 | return -EINVAL; | |
2055 | ||
2056 | /* Delete old stuff */ | |
2057 | for (dentry = | |
2058 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2059 | dentry; dentry = dentry->next) { | |
2060 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2061 | root_kv, | |
2062 | dentry->kv); | |
2063 | } | |
2064 | ||
2065 | if (req->req.length == 0) { | |
2066 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2067 | fi->csr1212_dirs[dr] = NULL; | |
2068 | ||
2069 | hpsb_update_config_rom_image(fi->host); | |
2070 | free_pending_request(req); | |
883b97ea | 2071 | return 0; |
1da177e4 LT |
2072 | } |
2073 | } | |
2074 | ||
2075 | cache = csr1212_rom_cache_malloc(0, req->req.length); | |
2076 | if (!cache) { | |
2077 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2078 | fi->csr1212_dirs[dr] = NULL; | |
2079 | return -ENOMEM; | |
2080 | } | |
2081 | ||
8551158a | 2082 | cache->filled_head = kmalloc(sizeof(*cache->filled_head), GFP_KERNEL); |
1da177e4 LT |
2083 | if (!cache->filled_head) { |
2084 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2085 | fi->csr1212_dirs[dr] = NULL; | |
2086 | CSR1212_FREE(cache); | |
2087 | return -ENOMEM; | |
2088 | } | |
2089 | cache->filled_tail = cache->filled_head; | |
2090 | ||
2091 | if (copy_from_user(cache->data, int2ptr(req->req.sendb), | |
2092 | req->req.length)) { | |
2093 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2094 | fi->csr1212_dirs[dr] = NULL; | |
1da177e4 LT |
2095 | ret = -EFAULT; |
2096 | } else { | |
2097 | cache->len = req->req.length; | |
2098 | cache->filled_head->offset_start = 0; | |
2099 | cache->filled_head->offset_end = cache->size - 1; | |
2100 | ||
2101 | cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr]; | |
2102 | ||
2103 | ret = CSR1212_SUCCESS; | |
2104 | /* parse all the items */ | |
2105 | for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv; | |
2106 | kv = kv->next) { | |
2107 | ret = csr1212_parse_keyval(kv, cache); | |
2108 | } | |
2109 | ||
2110 | /* attach top level items to the root directory */ | |
2111 | for (dentry = | |
2112 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2113 | ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) { | |
2114 | ret = | |
2115 | csr1212_attach_keyval_to_directory(fi->host->csr. | |
2116 | rom->root_kv, | |
2117 | dentry->kv); | |
2118 | } | |
2119 | ||
2120 | if (ret == CSR1212_SUCCESS) { | |
2121 | ret = hpsb_update_config_rom_image(fi->host); | |
2122 | ||
2123 | if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb), | |
2124 | &dr, sizeof(dr))) { | |
2125 | ret = -ENOMEM; | |
2126 | } | |
2127 | } | |
2128 | } | |
2129 | kfree(cache->filled_head); | |
b12479dd | 2130 | CSR1212_FREE(cache); |
1da177e4 LT |
2131 | |
2132 | if (ret >= 0) { | |
2133 | /* we have to free the request, because we queue no response, | |
2134 | * and therefore nobody will free it */ | |
2135 | free_pending_request(req); | |
883b97ea | 2136 | return 0; |
1da177e4 LT |
2137 | } else { |
2138 | for (dentry = | |
2139 | fi->csr1212_dirs[dr]->value.directory.dentries_head; | |
2140 | dentry; dentry = dentry->next) { | |
2141 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2142 | root_kv, | |
2143 | dentry->kv); | |
2144 | } | |
2145 | csr1212_release_keyval(fi->csr1212_dirs[dr]); | |
2146 | fi->csr1212_dirs[dr] = NULL; | |
2147 | return ret; | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | static int state_connected(struct file_info *fi, struct pending_request *req) | |
2152 | { | |
2153 | int node = req->req.address >> 48; | |
2154 | ||
2155 | req->req.error = RAW1394_ERROR_NONE; | |
2156 | ||
2157 | switch (req->req.type) { | |
2158 | ||
2159 | case RAW1394_REQ_ECHO: | |
2160 | queue_complete_req(req); | |
883b97ea | 2161 | return 0; |
1da177e4 | 2162 | |
1da177e4 LT |
2163 | case RAW1394_REQ_ARM_REGISTER: |
2164 | return arm_register(fi, req); | |
2165 | ||
2166 | case RAW1394_REQ_ARM_UNREGISTER: | |
2167 | return arm_unregister(fi, req); | |
2168 | ||
2169 | case RAW1394_REQ_ARM_SET_BUF: | |
2170 | return arm_set_buf(fi, req); | |
2171 | ||
2172 | case RAW1394_REQ_ARM_GET_BUF: | |
2173 | return arm_get_buf(fi, req); | |
2174 | ||
2175 | case RAW1394_REQ_RESET_NOTIFY: | |
2176 | return reset_notification(fi, req); | |
2177 | ||
53c96b41 | 2178 | case RAW1394_REQ_ISO_SEND: |
1da177e4 | 2179 | case RAW1394_REQ_ISO_LISTEN: |
53c96b41 SR |
2180 | printk(KERN_DEBUG "raw1394: old iso ABI has been removed\n"); |
2181 | req->req.error = RAW1394_ERROR_COMPAT; | |
2182 | req->req.misc = RAW1394_KERNELAPI_VERSION; | |
2183 | queue_complete_req(req); | |
883b97ea | 2184 | return 0; |
1da177e4 LT |
2185 | |
2186 | case RAW1394_REQ_FCP_LISTEN: | |
2187 | handle_fcp_listen(fi, req); | |
883b97ea | 2188 | return 0; |
1da177e4 LT |
2189 | |
2190 | case RAW1394_REQ_RESET_BUS: | |
2191 | if (req->req.misc == RAW1394_LONG_RESET) { | |
2192 | DBGMSG("busreset called (type: LONG)"); | |
2193 | hpsb_reset_bus(fi->host, LONG_RESET); | |
2194 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
883b97ea | 2195 | return 0; |
1da177e4 LT |
2196 | } |
2197 | if (req->req.misc == RAW1394_SHORT_RESET) { | |
2198 | DBGMSG("busreset called (type: SHORT)"); | |
2199 | hpsb_reset_bus(fi->host, SHORT_RESET); | |
2200 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ | |
883b97ea | 2201 | return 0; |
1da177e4 LT |
2202 | } |
2203 | /* error EINVAL (22) invalid argument */ | |
2204 | return (-EINVAL); | |
2205 | case RAW1394_REQ_GET_ROM: | |
2206 | return get_config_rom(fi, req); | |
2207 | ||
2208 | case RAW1394_REQ_UPDATE_ROM: | |
2209 | return update_config_rom(fi, req); | |
2210 | ||
2211 | case RAW1394_REQ_MODIFY_ROM: | |
2212 | return modify_config_rom(fi, req); | |
2213 | } | |
2214 | ||
2215 | if (req->req.generation != get_hpsb_generation(fi->host)) { | |
2216 | req->req.error = RAW1394_ERROR_GENERATION; | |
2217 | req->req.generation = get_hpsb_generation(fi->host); | |
2218 | req->req.length = 0; | |
2219 | queue_complete_req(req); | |
883b97ea | 2220 | return 0; |
1da177e4 LT |
2221 | } |
2222 | ||
2223 | switch (req->req.type) { | |
2224 | case RAW1394_REQ_PHYPACKET: | |
2225 | return write_phypacket(fi, req); | |
2226 | case RAW1394_REQ_ASYNC_SEND: | |
2227 | return handle_async_send(fi, req); | |
2228 | } | |
2229 | ||
2230 | if (req->req.length == 0) { | |
2231 | req->req.error = RAW1394_ERROR_INVALID_ARG; | |
2232 | queue_complete_req(req); | |
883b97ea | 2233 | return 0; |
1da177e4 LT |
2234 | } |
2235 | ||
2236 | return handle_async_request(fi, req, node); | |
2237 | } | |
2238 | ||
2239 | static ssize_t raw1394_write(struct file *file, const char __user * buffer, | |
2240 | size_t count, loff_t * offset_is_ignored) | |
2241 | { | |
2242 | struct file_info *fi = (struct file_info *)file->private_data; | |
2243 | struct pending_request *req; | |
883b97ea | 2244 | ssize_t retval = -EBADFD; |
1da177e4 | 2245 | |
4bc32c4d | 2246 | #ifdef CONFIG_COMPAT |
7597028a BC |
2247 | if (count == sizeof(struct compat_raw1394_req) && |
2248 | sizeof(struct compat_raw1394_req) != | |
2249 | sizeof(struct raw1394_request)) { | |
4bc32c4d AK |
2250 | buffer = raw1394_compat_write(buffer); |
2251 | if (IS_ERR(buffer)) | |
2252 | return PTR_ERR(buffer); | |
2253 | } else | |
2254 | #endif | |
1da177e4 LT |
2255 | if (count != sizeof(struct raw1394_request)) { |
2256 | return -EINVAL; | |
2257 | } | |
2258 | ||
2259 | req = alloc_pending_request(); | |
2260 | if (req == NULL) { | |
2261 | return -ENOMEM; | |
2262 | } | |
2263 | req->file_info = fi; | |
2264 | ||
2265 | if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) { | |
2266 | free_pending_request(req); | |
2267 | return -EFAULT; | |
2268 | } | |
2269 | ||
2270 | switch (fi->state) { | |
2271 | case opened: | |
2272 | retval = state_opened(fi, req); | |
2273 | break; | |
2274 | ||
2275 | case initialized: | |
2276 | retval = state_initialized(fi, req); | |
2277 | break; | |
2278 | ||
2279 | case connected: | |
2280 | retval = state_connected(fi, req); | |
2281 | break; | |
2282 | } | |
2283 | ||
2284 | if (retval < 0) { | |
2285 | free_pending_request(req); | |
883b97ea PV |
2286 | } else { |
2287 | BUG_ON(retval); | |
2288 | retval = count; | |
1da177e4 LT |
2289 | } |
2290 | ||
2291 | return retval; | |
2292 | } | |
2293 | ||
2294 | /* rawiso operations */ | |
2295 | ||
2296 | /* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the | |
2297 | * completion queue (reqlists_lock must be taken) */ | |
2298 | static inline int __rawiso_event_in_queue(struct file_info *fi) | |
2299 | { | |
2300 | struct pending_request *req; | |
2301 | ||
2302 | list_for_each_entry(req, &fi->req_complete, list) | |
2303 | if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY) | |
2304 | return 1; | |
2305 | ||
2306 | return 0; | |
2307 | } | |
2308 | ||
2309 | /* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */ | |
2310 | static void queue_rawiso_event(struct file_info *fi) | |
2311 | { | |
2312 | unsigned long flags; | |
2313 | ||
2314 | spin_lock_irqsave(&fi->reqlists_lock, flags); | |
2315 | ||
2316 | /* only one ISO activity event may be in the queue */ | |
2317 | if (!__rawiso_event_in_queue(fi)) { | |
2318 | struct pending_request *req = | |
54e6ecb2 | 2319 | __alloc_pending_request(GFP_ATOMIC); |
1da177e4 LT |
2320 | |
2321 | if (req) { | |
2322 | req->file_info = fi; | |
2323 | req->req.type = RAW1394_REQ_RAWISO_ACTIVITY; | |
2324 | req->req.generation = get_hpsb_generation(fi->host); | |
2325 | __queue_complete_req(req); | |
2326 | } else { | |
2327 | /* on allocation failure, signal an overflow */ | |
2328 | if (fi->iso_handle) { | |
2329 | atomic_inc(&fi->iso_handle->overflows); | |
2330 | } | |
2331 | } | |
2332 | } | |
2333 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); | |
2334 | } | |
2335 | ||
2336 | static void rawiso_activity_cb(struct hpsb_iso *iso) | |
2337 | { | |
2338 | unsigned long flags; | |
2339 | struct host_info *hi; | |
2340 | struct file_info *fi; | |
2341 | ||
2342 | spin_lock_irqsave(&host_info_lock, flags); | |
2343 | hi = find_host_info(iso->host); | |
2344 | ||
2345 | if (hi != NULL) { | |
2346 | list_for_each_entry(fi, &hi->file_info_list, list) { | |
2347 | if (fi->iso_handle == iso) | |
2348 | queue_rawiso_event(fi); | |
2349 | } | |
2350 | } | |
2351 | ||
2352 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2353 | } | |
2354 | ||
2355 | /* helper function - gather all the kernel iso status bits for returning to user-space */ | |
2356 | static void raw1394_iso_fill_status(struct hpsb_iso *iso, | |
2357 | struct raw1394_iso_status *stat) | |
2358 | { | |
cc9429bc PP |
2359 | int overflows = atomic_read(&iso->overflows); |
2360 | int skips = atomic_read(&iso->skips); | |
2361 | ||
1da177e4 LT |
2362 | stat->config.data_buf_size = iso->buf_size; |
2363 | stat->config.buf_packets = iso->buf_packets; | |
2364 | stat->config.channel = iso->channel; | |
2365 | stat->config.speed = iso->speed; | |
2366 | stat->config.irq_interval = iso->irq_interval; | |
2367 | stat->n_packets = hpsb_iso_n_ready(iso); | |
cc9429bc | 2368 | stat->overflows = ((skips & 0xFFFF) << 16) | ((overflows & 0xFFFF)); |
1da177e4 LT |
2369 | stat->xmit_cycle = iso->xmit_cycle; |
2370 | } | |
2371 | ||
2372 | static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr) | |
2373 | { | |
2374 | struct raw1394_iso_status stat; | |
2375 | ||
2376 | if (!fi->host) | |
2377 | return -EINVAL; | |
2378 | ||
2379 | if (copy_from_user(&stat, uaddr, sizeof(stat))) | |
2380 | return -EFAULT; | |
2381 | ||
2382 | fi->iso_handle = hpsb_iso_xmit_init(fi->host, | |
2383 | stat.config.data_buf_size, | |
2384 | stat.config.buf_packets, | |
2385 | stat.config.channel, | |
2386 | stat.config.speed, | |
2387 | stat.config.irq_interval, | |
2388 | rawiso_activity_cb); | |
2389 | if (!fi->iso_handle) | |
2390 | return -ENOMEM; | |
2391 | ||
2392 | fi->iso_state = RAW1394_ISO_XMIT; | |
2393 | ||
2394 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2395 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2396 | return -EFAULT; | |
2397 | ||
2398 | /* queue an event to get things started */ | |
2399 | rawiso_activity_cb(fi->iso_handle); | |
2400 | ||
2401 | return 0; | |
2402 | } | |
2403 | ||
2404 | static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr) | |
2405 | { | |
2406 | struct raw1394_iso_status stat; | |
2407 | ||
2408 | if (!fi->host) | |
2409 | return -EINVAL; | |
2410 | ||
2411 | if (copy_from_user(&stat, uaddr, sizeof(stat))) | |
2412 | return -EFAULT; | |
2413 | ||
2414 | fi->iso_handle = hpsb_iso_recv_init(fi->host, | |
2415 | stat.config.data_buf_size, | |
2416 | stat.config.buf_packets, | |
2417 | stat.config.channel, | |
2418 | stat.config.dma_mode, | |
2419 | stat.config.irq_interval, | |
2420 | rawiso_activity_cb); | |
2421 | if (!fi->iso_handle) | |
2422 | return -ENOMEM; | |
2423 | ||
2424 | fi->iso_state = RAW1394_ISO_RECV; | |
2425 | ||
2426 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2427 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2428 | return -EFAULT; | |
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr) | |
2433 | { | |
2434 | struct raw1394_iso_status stat; | |
2435 | struct hpsb_iso *iso = fi->iso_handle; | |
2436 | ||
2437 | raw1394_iso_fill_status(fi->iso_handle, &stat); | |
2438 | if (copy_to_user(uaddr, &stat, sizeof(stat))) | |
2439 | return -EFAULT; | |
2440 | ||
2441 | /* reset overflow counter */ | |
2442 | atomic_set(&iso->overflows, 0); | |
cc9429bc PP |
2443 | /* reset skip counter */ |
2444 | atomic_set(&iso->skips, 0); | |
1da177e4 LT |
2445 | |
2446 | return 0; | |
2447 | } | |
2448 | ||
2449 | /* copy N packet_infos out of the ringbuffer into user-supplied array */ | |
2450 | static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr) | |
2451 | { | |
2452 | struct raw1394_iso_packets upackets; | |
2453 | unsigned int packet = fi->iso_handle->first_packet; | |
2454 | int i; | |
2455 | ||
2456 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) | |
2457 | return -EFAULT; | |
2458 | ||
2459 | if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle)) | |
2460 | return -EINVAL; | |
2461 | ||
2462 | /* ensure user-supplied buffer is accessible and big enough */ | |
2463 | if (!access_ok(VERIFY_WRITE, upackets.infos, | |
c64d472a JMH |
2464 | upackets.n_packets * |
2465 | sizeof(struct raw1394_iso_packet_info))) | |
1da177e4 LT |
2466 | return -EFAULT; |
2467 | ||
2468 | /* copy the packet_infos out */ | |
2469 | for (i = 0; i < upackets.n_packets; i++) { | |
2470 | if (__copy_to_user(&upackets.infos[i], | |
2471 | &fi->iso_handle->infos[packet], | |
2472 | sizeof(struct raw1394_iso_packet_info))) | |
2473 | return -EFAULT; | |
2474 | ||
2475 | packet = (packet + 1) % fi->iso_handle->buf_packets; | |
2476 | } | |
2477 | ||
2478 | return 0; | |
2479 | } | |
2480 | ||
2481 | /* copy N packet_infos from user to ringbuffer, and queue them for transmission */ | |
2482 | static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr) | |
2483 | { | |
2484 | struct raw1394_iso_packets upackets; | |
2485 | int i, rv; | |
2486 | ||
2487 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) | |
2488 | return -EFAULT; | |
2489 | ||
1934b8b6 | 2490 | if (upackets.n_packets >= fi->iso_handle->buf_packets) |
1da177e4 LT |
2491 | return -EINVAL; |
2492 | ||
1934b8b6 BC |
2493 | if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle)) |
2494 | return -EAGAIN; | |
2495 | ||
1da177e4 LT |
2496 | /* ensure user-supplied buffer is accessible and big enough */ |
2497 | if (!access_ok(VERIFY_READ, upackets.infos, | |
c64d472a JMH |
2498 | upackets.n_packets * |
2499 | sizeof(struct raw1394_iso_packet_info))) | |
1da177e4 LT |
2500 | return -EFAULT; |
2501 | ||
2502 | /* copy the infos structs in and queue the packets */ | |
2503 | for (i = 0; i < upackets.n_packets; i++) { | |
2504 | struct raw1394_iso_packet_info info; | |
2505 | ||
2506 | if (__copy_from_user(&info, &upackets.infos[i], | |
2507 | sizeof(struct raw1394_iso_packet_info))) | |
2508 | return -EFAULT; | |
2509 | ||
2510 | rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset, | |
2511 | info.len, info.tag, info.sy); | |
2512 | if (rv) | |
2513 | return rv; | |
2514 | } | |
2515 | ||
2516 | return 0; | |
2517 | } | |
2518 | ||
2519 | static void raw1394_iso_shutdown(struct file_info *fi) | |
2520 | { | |
2521 | if (fi->iso_handle) | |
2522 | hpsb_iso_shutdown(fi->iso_handle); | |
2523 | ||
2524 | fi->iso_handle = NULL; | |
2525 | fi->iso_state = RAW1394_ISO_INACTIVE; | |
2526 | } | |
2527 | ||
3dc5ea9b PP |
2528 | static int raw1394_read_cycle_timer(struct file_info *fi, void __user * uaddr) |
2529 | { | |
2530 | struct raw1394_cycle_timer ct; | |
2531 | int err; | |
2532 | ||
2533 | err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time); | |
2534 | if (!err) | |
2535 | if (copy_to_user(uaddr, &ct, sizeof(ct))) | |
2536 | err = -EFAULT; | |
2537 | return err; | |
2538 | } | |
2539 | ||
1da177e4 LT |
2540 | /* mmap the rawiso xmit/recv buffer */ |
2541 | static int raw1394_mmap(struct file *file, struct vm_area_struct *vma) | |
2542 | { | |
2543 | struct file_info *fi = file->private_data; | |
2544 | ||
2545 | if (fi->iso_state == RAW1394_ISO_INACTIVE) | |
2546 | return -EINVAL; | |
2547 | ||
2548 | return dma_region_mmap(&fi->iso_handle->data_buf, file, vma); | |
2549 | } | |
2550 | ||
2551 | /* ioctl is only used for rawiso operations */ | |
3aea50a3 AC |
2552 | static long do_raw1394_ioctl(struct file *file, unsigned int cmd, |
2553 | unsigned long arg) | |
1da177e4 LT |
2554 | { |
2555 | struct file_info *fi = file->private_data; | |
2556 | void __user *argp = (void __user *)arg; | |
2557 | ||
2558 | switch (fi->iso_state) { | |
2559 | case RAW1394_ISO_INACTIVE: | |
2560 | switch (cmd) { | |
2561 | case RAW1394_IOC_ISO_XMIT_INIT: | |
2562 | return raw1394_iso_xmit_init(fi, argp); | |
2563 | case RAW1394_IOC_ISO_RECV_INIT: | |
2564 | return raw1394_iso_recv_init(fi, argp); | |
2565 | default: | |
2566 | break; | |
2567 | } | |
2568 | break; | |
2569 | case RAW1394_ISO_RECV: | |
2570 | switch (cmd) { | |
2571 | case RAW1394_IOC_ISO_RECV_START:{ | |
2572 | /* copy args from user-space */ | |
2573 | int args[3]; | |
2574 | if (copy_from_user | |
2575 | (&args[0], argp, sizeof(args))) | |
2576 | return -EFAULT; | |
2577 | return hpsb_iso_recv_start(fi->iso_handle, | |
2578 | args[0], args[1], | |
2579 | args[2]); | |
2580 | } | |
2581 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2582 | hpsb_iso_stop(fi->iso_handle); | |
2583 | return 0; | |
2584 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: | |
2585 | return hpsb_iso_recv_listen_channel(fi->iso_handle, | |
2586 | arg); | |
2587 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: | |
2588 | return hpsb_iso_recv_unlisten_channel(fi->iso_handle, | |
2589 | arg); | |
2590 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{ | |
2591 | /* copy the u64 from user-space */ | |
2592 | u64 mask; | |
2593 | if (copy_from_user(&mask, argp, sizeof(mask))) | |
2594 | return -EFAULT; | |
2595 | return hpsb_iso_recv_set_channel_mask(fi-> | |
2596 | iso_handle, | |
2597 | mask); | |
2598 | } | |
2599 | case RAW1394_IOC_ISO_GET_STATUS: | |
2600 | return raw1394_iso_get_status(fi, argp); | |
2601 | case RAW1394_IOC_ISO_RECV_PACKETS: | |
2602 | return raw1394_iso_recv_packets(fi, argp); | |
2603 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: | |
2604 | return hpsb_iso_recv_release_packets(fi->iso_handle, | |
2605 | arg); | |
2606 | case RAW1394_IOC_ISO_RECV_FLUSH: | |
2607 | return hpsb_iso_recv_flush(fi->iso_handle); | |
2608 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2609 | raw1394_iso_shutdown(fi); | |
2610 | return 0; | |
2611 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
2612 | queue_rawiso_event(fi); | |
2613 | return 0; | |
2614 | } | |
2615 | break; | |
2616 | case RAW1394_ISO_XMIT: | |
2617 | switch (cmd) { | |
2618 | case RAW1394_IOC_ISO_XMIT_START:{ | |
2619 | /* copy two ints from user-space */ | |
2620 | int args[2]; | |
2621 | if (copy_from_user | |
2622 | (&args[0], argp, sizeof(args))) | |
2623 | return -EFAULT; | |
2624 | return hpsb_iso_xmit_start(fi->iso_handle, | |
2625 | args[0], args[1]); | |
2626 | } | |
2627 | case RAW1394_IOC_ISO_XMIT_SYNC: | |
2628 | return hpsb_iso_xmit_sync(fi->iso_handle); | |
2629 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2630 | hpsb_iso_stop(fi->iso_handle); | |
2631 | return 0; | |
2632 | case RAW1394_IOC_ISO_GET_STATUS: | |
2633 | return raw1394_iso_get_status(fi, argp); | |
2634 | case RAW1394_IOC_ISO_XMIT_PACKETS: | |
2635 | return raw1394_iso_send_packets(fi, argp); | |
2636 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2637 | raw1394_iso_shutdown(fi); | |
2638 | return 0; | |
2639 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
2640 | queue_rawiso_event(fi); | |
2641 | return 0; | |
2642 | } | |
2643 | break; | |
2644 | default: | |
2645 | break; | |
2646 | } | |
2647 | ||
3dc5ea9b PP |
2648 | /* state-independent commands */ |
2649 | switch(cmd) { | |
2650 | case RAW1394_IOC_GET_CYCLE_TIMER: | |
2651 | return raw1394_read_cycle_timer(fi, argp); | |
2652 | default: | |
2653 | break; | |
2654 | } | |
2655 | ||
1da177e4 LT |
2656 | return -EINVAL; |
2657 | } | |
2658 | ||
3aea50a3 AC |
2659 | static long raw1394_ioctl(struct file *file, unsigned int cmd, |
2660 | unsigned long arg) | |
2661 | { | |
2662 | long ret; | |
2663 | lock_kernel(); | |
2664 | ret = do_raw1394_ioctl(file, cmd, arg); | |
2665 | unlock_kernel(); | |
2666 | return ret; | |
2667 | } | |
2668 | ||
650c12c5 PV |
2669 | #ifdef CONFIG_COMPAT |
2670 | struct raw1394_iso_packets32 { | |
2671 | __u32 n_packets; | |
2672 | compat_uptr_t infos; | |
2673 | } __attribute__((packed)); | |
2674 | ||
2675 | struct raw1394_cycle_timer32 { | |
2676 | __u32 cycle_timer; | |
2677 | __u64 local_time; | |
19f00e66 SR |
2678 | } |
2679 | #if defined(CONFIG_X86_64) || defined(CONFIG_IA64) | |
2680 | __attribute__((packed)) | |
2681 | #endif | |
2682 | ; | |
650c12c5 PV |
2683 | |
2684 | #define RAW1394_IOC_ISO_RECV_PACKETS32 \ | |
2685 | _IOW ('#', 0x25, struct raw1394_iso_packets32) | |
2686 | #define RAW1394_IOC_ISO_XMIT_PACKETS32 \ | |
2687 | _IOW ('#', 0x27, struct raw1394_iso_packets32) | |
2688 | #define RAW1394_IOC_GET_CYCLE_TIMER32 \ | |
2689 | _IOR ('#', 0x30, struct raw1394_cycle_timer32) | |
2690 | ||
2691 | static long raw1394_iso_xmit_recv_packets32(struct file *file, unsigned int cmd, | |
2692 | struct raw1394_iso_packets32 __user *arg) | |
2693 | { | |
2694 | compat_uptr_t infos32; | |
5b26e64e | 2695 | void __user *infos; |
650c12c5 PV |
2696 | long err = -EFAULT; |
2697 | struct raw1394_iso_packets __user *dst = compat_alloc_user_space(sizeof(struct raw1394_iso_packets)); | |
2698 | ||
2699 | if (!copy_in_user(&dst->n_packets, &arg->n_packets, sizeof arg->n_packets) && | |
2700 | !copy_from_user(&infos32, &arg->infos, sizeof infos32)) { | |
2701 | infos = compat_ptr(infos32); | |
2702 | if (!copy_to_user(&dst->infos, &infos, sizeof infos)) | |
3aea50a3 | 2703 | err = do_raw1394_ioctl(file, cmd, (unsigned long)dst); |
650c12c5 PV |
2704 | } |
2705 | return err; | |
2706 | } | |
2707 | ||
2708 | static long raw1394_read_cycle_timer32(struct file_info *fi, void __user * uaddr) | |
2709 | { | |
2710 | struct raw1394_cycle_timer32 ct; | |
2711 | int err; | |
2712 | ||
2713 | err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time); | |
2714 | if (!err) | |
2715 | if (copy_to_user(uaddr, &ct, sizeof(ct))) | |
2716 | err = -EFAULT; | |
2717 | return err; | |
2718 | } | |
2719 | ||
2720 | static long raw1394_compat_ioctl(struct file *file, | |
2721 | unsigned int cmd, unsigned long arg) | |
2722 | { | |
2723 | struct file_info *fi = file->private_data; | |
2724 | void __user *argp = (void __user *)arg; | |
2725 | long err; | |
2726 | ||
2727 | lock_kernel(); | |
2728 | switch (cmd) { | |
2729 | /* These requests have same format as long as 'int' has same size. */ | |
2730 | case RAW1394_IOC_ISO_RECV_INIT: | |
2731 | case RAW1394_IOC_ISO_RECV_START: | |
2732 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: | |
2733 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: | |
2734 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK: | |
2735 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: | |
2736 | case RAW1394_IOC_ISO_RECV_FLUSH: | |
2737 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: | |
2738 | case RAW1394_IOC_ISO_XMIT_INIT: | |
2739 | case RAW1394_IOC_ISO_XMIT_START: | |
2740 | case RAW1394_IOC_ISO_XMIT_SYNC: | |
2741 | case RAW1394_IOC_ISO_GET_STATUS: | |
2742 | case RAW1394_IOC_ISO_SHUTDOWN: | |
2743 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: | |
3aea50a3 | 2744 | err = do_raw1394_ioctl(file, cmd, arg); |
650c12c5 PV |
2745 | break; |
2746 | /* These request have different format. */ | |
2747 | case RAW1394_IOC_ISO_RECV_PACKETS32: | |
2748 | err = raw1394_iso_xmit_recv_packets32(file, RAW1394_IOC_ISO_RECV_PACKETS, argp); | |
2749 | break; | |
2750 | case RAW1394_IOC_ISO_XMIT_PACKETS32: | |
2751 | err = raw1394_iso_xmit_recv_packets32(file, RAW1394_IOC_ISO_XMIT_PACKETS, argp); | |
2752 | break; | |
2753 | case RAW1394_IOC_GET_CYCLE_TIMER32: | |
2754 | err = raw1394_read_cycle_timer32(fi, argp); | |
2755 | break; | |
2756 | default: | |
2757 | err = -EINVAL; | |
2758 | break; | |
2759 | } | |
2760 | unlock_kernel(); | |
2761 | ||
2762 | return err; | |
2763 | } | |
2764 | #endif | |
2765 | ||
1da177e4 LT |
2766 | static unsigned int raw1394_poll(struct file *file, poll_table * pt) |
2767 | { | |
2768 | struct file_info *fi = file->private_data; | |
2769 | unsigned int mask = POLLOUT | POLLWRNORM; | |
4a9949d7 | 2770 | unsigned long flags; |
1da177e4 | 2771 | |
45289bf6 | 2772 | poll_wait(file, &fi->wait_complete, pt); |
1da177e4 | 2773 | |
4a9949d7 | 2774 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
1da177e4 LT |
2775 | if (!list_empty(&fi->req_complete)) { |
2776 | mask |= POLLIN | POLLRDNORM; | |
2777 | } | |
4a9949d7 | 2778 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 LT |
2779 | |
2780 | return mask; | |
2781 | } | |
2782 | ||
2783 | static int raw1394_open(struct inode *inode, struct file *file) | |
2784 | { | |
2785 | struct file_info *fi; | |
2786 | ||
e94b1766 | 2787 | fi = kzalloc(sizeof(*fi), GFP_KERNEL); |
8551158a | 2788 | if (!fi) |
1da177e4 LT |
2789 | return -ENOMEM; |
2790 | ||
1da177e4 LT |
2791 | fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */ |
2792 | ||
2793 | INIT_LIST_HEAD(&fi->list); | |
2794 | fi->state = opened; | |
2795 | INIT_LIST_HEAD(&fi->req_pending); | |
2796 | INIT_LIST_HEAD(&fi->req_complete); | |
1da177e4 | 2797 | spin_lock_init(&fi->reqlists_lock); |
45289bf6 | 2798 | init_waitqueue_head(&fi->wait_complete); |
1da177e4 LT |
2799 | INIT_LIST_HEAD(&fi->addr_list); |
2800 | ||
2801 | file->private_data = fi; | |
2802 | ||
2803 | return 0; | |
2804 | } | |
2805 | ||
2806 | static int raw1394_release(struct inode *inode, struct file *file) | |
2807 | { | |
2808 | struct file_info *fi = file->private_data; | |
2809 | struct list_head *lh; | |
2810 | struct pending_request *req; | |
45289bf6 | 2811 | int i, fail; |
1da177e4 LT |
2812 | int retval = 0; |
2813 | struct list_head *entry; | |
2814 | struct arm_addr *addr = NULL; | |
2815 | struct host_info *hi; | |
2816 | struct file_info *fi_hlp = NULL; | |
2817 | struct arm_addr *arm_addr = NULL; | |
2818 | int another_host; | |
2819 | int csr_mod = 0; | |
4a9949d7 | 2820 | unsigned long flags; |
1da177e4 LT |
2821 | |
2822 | if (fi->iso_state != RAW1394_ISO_INACTIVE) | |
2823 | raw1394_iso_shutdown(fi); | |
2824 | ||
4a9949d7 | 2825 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 LT |
2826 | |
2827 | fail = 0; | |
2828 | /* set address-entries invalid */ | |
1da177e4 LT |
2829 | |
2830 | while (!list_empty(&fi->addr_list)) { | |
2831 | another_host = 0; | |
2832 | lh = fi->addr_list.next; | |
2833 | addr = list_entry(lh, struct arm_addr, addr_list); | |
2834 | /* another host with valid address-entry containing | |
2835 | same addressrange? */ | |
2836 | list_for_each_entry(hi, &host_info_list, list) { | |
2837 | if (hi->host != fi->host) { | |
2838 | list_for_each_entry(fi_hlp, &hi->file_info_list, | |
2839 | list) { | |
2840 | entry = fi_hlp->addr_list.next; | |
2841 | while (entry != &(fi_hlp->addr_list)) { | |
c64d472a | 2842 | arm_addr = list_entry(entry, struct |
1da177e4 LT |
2843 | arm_addr, |
2844 | addr_list); | |
2845 | if (arm_addr->start == | |
2846 | addr->start) { | |
2847 | DBGMSG | |
2848 | ("raw1394_release: " | |
2849 | "another host ownes " | |
2850 | "same addressrange"); | |
2851 | another_host = 1; | |
2852 | break; | |
2853 | } | |
2854 | entry = entry->next; | |
2855 | } | |
2856 | if (another_host) { | |
2857 | break; | |
2858 | } | |
2859 | } | |
2860 | } | |
2861 | } | |
2862 | if (!another_host) { | |
2863 | DBGMSG("raw1394_release: call hpsb_arm_unregister"); | |
2864 | retval = | |
2865 | hpsb_unregister_addrspace(&raw1394_highlevel, | |
2866 | fi->host, addr->start); | |
2867 | if (!retval) { | |
2868 | ++fail; | |
2869 | printk(KERN_ERR | |
2870 | "raw1394_release arm_Unregister failed\n"); | |
2871 | } | |
2872 | } | |
2873 | DBGMSG("raw1394_release: delete addr_entry from list"); | |
2874 | list_del(&addr->addr_list); | |
2875 | vfree(addr->addr_space_buffer); | |
2876 | kfree(addr); | |
2877 | } /* while */ | |
4a9949d7 | 2878 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2879 | if (fail > 0) { |
2880 | printk(KERN_ERR "raw1394: during addr_list-release " | |
2881 | "error(s) occurred \n"); | |
2882 | } | |
2883 | ||
45289bf6 SR |
2884 | for (;;) { |
2885 | /* This locked section guarantees that neither | |
2886 | * complete nor pending requests exist once i!=0 */ | |
4a9949d7 | 2887 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
45289bf6 | 2888 | while ((req = __next_complete_req(fi))) |
1da177e4 | 2889 | free_pending_request(req); |
1da177e4 | 2890 | |
45289bf6 | 2891 | i = list_empty(&fi->req_pending); |
4a9949d7 | 2892 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
1da177e4 | 2893 | |
45289bf6 SR |
2894 | if (i) |
2895 | break; | |
2896 | /* | |
2897 | * Sleep until more requests can be freed. | |
2898 | * | |
2899 | * NB: We call the macro wait_event() with a condition argument | |
2900 | * with side effect. This is only possible because the side | |
2901 | * effect does not occur until the condition became true, and | |
2902 | * wait_event() won't evaluate the condition again after that. | |
2903 | */ | |
2904 | wait_event(fi->wait_complete, (req = next_complete_req(fi))); | |
2905 | free_pending_request(req); | |
1da177e4 LT |
2906 | } |
2907 | ||
2908 | /* Remove any sub-trees left by user space programs */ | |
2909 | for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) { | |
2910 | struct csr1212_dentry *dentry; | |
2911 | if (!fi->csr1212_dirs[i]) | |
2912 | continue; | |
2913 | for (dentry = | |
2914 | fi->csr1212_dirs[i]->value.directory.dentries_head; dentry; | |
2915 | dentry = dentry->next) { | |
2916 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> | |
2917 | root_kv, | |
2918 | dentry->kv); | |
2919 | } | |
2920 | csr1212_release_keyval(fi->csr1212_dirs[i]); | |
2921 | fi->csr1212_dirs[i] = NULL; | |
2922 | csr_mod = 1; | |
2923 | } | |
2924 | ||
2925 | if ((csr_mod || fi->cfgrom_upd) | |
2926 | && hpsb_update_config_rom_image(fi->host) < 0) | |
2927 | HPSB_ERR | |
2928 | ("Failed to generate Configuration ROM image for host %d", | |
2929 | fi->host->id); | |
2930 | ||
2931 | if (fi->state == connected) { | |
4a9949d7 | 2932 | spin_lock_irqsave(&host_info_lock, flags); |
1da177e4 | 2933 | list_del(&fi->list); |
4a9949d7 | 2934 | spin_unlock_irqrestore(&host_info_lock, flags); |
1da177e4 LT |
2935 | |
2936 | put_device(&fi->host->device); | |
2937 | } | |
2938 | ||
0fe4c6fc SR |
2939 | spin_lock_irqsave(&host_info_lock, flags); |
2940 | if (fi->host) | |
2941 | module_put(fi->host->driver->owner); | |
2942 | spin_unlock_irqrestore(&host_info_lock, flags); | |
2943 | ||
1da177e4 LT |
2944 | kfree(fi); |
2945 | ||
2946 | return 0; | |
2947 | } | |
2948 | ||
2949 | /*** HOTPLUG STUFF **********************************************************/ | |
2950 | /* | |
2951 | * Export information about protocols/devices supported by this driver. | |
2952 | */ | |
e3864970 | 2953 | #ifdef MODULE |
1da177e4 LT |
2954 | static struct ieee1394_device_id raw1394_id_table[] = { |
2955 | { | |
2956 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2957 | .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2958 | .version = AVC_SW_VERSION_ENTRY & 0xffffff}, | |
2959 | { | |
2960 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2961 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2962 | .version = CAMERA_SW_VERSION_ENTRY & 0xffffff}, | |
2963 | { | |
2964 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2965 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2966 | .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff}, | |
2967 | { | |
2968 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, | |
2969 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, | |
2970 | .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff}, | |
2971 | {} | |
2972 | }; | |
2973 | ||
2974 | MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table); | |
e3864970 | 2975 | #endif /* MODULE */ |
1da177e4 LT |
2976 | |
2977 | static struct hpsb_protocol_driver raw1394_driver = { | |
ed30c26e | 2978 | .name = "raw1394", |
1da177e4 LT |
2979 | }; |
2980 | ||
2981 | /******************************************************************************/ | |
2982 | ||
2983 | static struct hpsb_highlevel raw1394_highlevel = { | |
2984 | .name = RAW1394_DEVICE_NAME, | |
2985 | .add_host = add_host, | |
2986 | .remove_host = remove_host, | |
2987 | .host_reset = host_reset, | |
1da177e4 LT |
2988 | .fcp_request = fcp_request, |
2989 | }; | |
2990 | ||
2991 | static struct cdev raw1394_cdev; | |
2b8693c0 | 2992 | static const struct file_operations raw1394_fops = { |
1da177e4 LT |
2993 | .owner = THIS_MODULE, |
2994 | .read = raw1394_read, | |
2995 | .write = raw1394_write, | |
2996 | .mmap = raw1394_mmap, | |
3aea50a3 | 2997 | .unlocked_ioctl = raw1394_ioctl, |
650c12c5 PV |
2998 | #ifdef CONFIG_COMPAT |
2999 | .compat_ioctl = raw1394_compat_ioctl, | |
3000 | #endif | |
1da177e4 LT |
3001 | .poll = raw1394_poll, |
3002 | .open = raw1394_open, | |
3003 | .release = raw1394_release, | |
3004 | }; | |
3005 | ||
3006 | static int __init init_raw1394(void) | |
3007 | { | |
3008 | int ret = 0; | |
3009 | ||
3010 | hpsb_register_highlevel(&raw1394_highlevel); | |
3011 | ||
c64d472a | 3012 | if (IS_ERR |
dd7f2928 KS |
3013 | (device_create( |
3014 | hpsb_protocol_class, NULL, | |
3015 | MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16), | |
c64d472a | 3016 | RAW1394_DEVICE_NAME))) { |
1da177e4 LT |
3017 | ret = -EFAULT; |
3018 | goto out_unreg; | |
3019 | } | |
c64d472a | 3020 | |
1da177e4 LT |
3021 | cdev_init(&raw1394_cdev, &raw1394_fops); |
3022 | raw1394_cdev.owner = THIS_MODULE; | |
1da177e4 LT |
3023 | ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1); |
3024 | if (ret) { | |
3025 | HPSB_ERR("raw1394 failed to register minor device block"); | |
3026 | goto out_dev; | |
3027 | } | |
3028 | ||
3029 | HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME); | |
3030 | ||
3031 | ret = hpsb_register_protocol(&raw1394_driver); | |
3032 | if (ret) { | |
3033 | HPSB_ERR("raw1394: failed to register protocol"); | |
3034 | cdev_del(&raw1394_cdev); | |
3035 | goto out_dev; | |
3036 | } | |
3037 | ||
3038 | goto out; | |
3039 | ||
c64d472a | 3040 | out_dev: |
dd7f2928 KS |
3041 | device_destroy(hpsb_protocol_class, |
3042 | MKDEV(IEEE1394_MAJOR, | |
3043 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); | |
c64d472a | 3044 | out_unreg: |
1da177e4 | 3045 | hpsb_unregister_highlevel(&raw1394_highlevel); |
c64d472a | 3046 | out: |
1da177e4 LT |
3047 | return ret; |
3048 | } | |
3049 | ||
3050 | static void __exit cleanup_raw1394(void) | |
3051 | { | |
dd7f2928 KS |
3052 | device_destroy(hpsb_protocol_class, |
3053 | MKDEV(IEEE1394_MAJOR, | |
3054 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); | |
1da177e4 | 3055 | cdev_del(&raw1394_cdev); |
1da177e4 LT |
3056 | hpsb_unregister_highlevel(&raw1394_highlevel); |
3057 | hpsb_unregister_protocol(&raw1394_driver); | |
3058 | } | |
3059 | ||
3060 | module_init(init_raw1394); | |
3061 | module_exit(cleanup_raw1394); | |
3062 | MODULE_LICENSE("GPL"); |