1 | #include <machine/rtems-bsd-kernel-space.h> |
---|
2 | |
---|
3 | /*- |
---|
4 | * Copyright (c) 2005-2008, Sam Leffler <sam@errno.com> |
---|
5 | * All rights reserved. |
---|
6 | * |
---|
7 | * Redistribution and use in source and binary forms, with or without |
---|
8 | * modification, are permitted provided that the following conditions |
---|
9 | * are met: |
---|
10 | * 1. Redistributions of source code must retain the above copyright |
---|
11 | * notice unmodified, this list of conditions, and the following |
---|
12 | * disclaimer. |
---|
13 | * 2. Redistributions in binary form must reproduce the above copyright |
---|
14 | * notice, this list of conditions and the following disclaimer in the |
---|
15 | * documentation and/or other materials provided with the distribution. |
---|
16 | * |
---|
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
---|
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
---|
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
---|
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
---|
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
---|
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
---|
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
---|
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
---|
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
---|
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
---|
27 | */ |
---|
28 | |
---|
29 | #include <sys/cdefs.h> |
---|
30 | __FBSDID("$FreeBSD$"); |
---|
31 | |
---|
32 | #include <rtems/bsd/sys/param.h> |
---|
33 | #include <sys/kernel.h> |
---|
34 | #include <sys/malloc.h> |
---|
35 | #include <sys/queue.h> |
---|
36 | #include <sys/taskqueue.h> |
---|
37 | #include <sys/systm.h> |
---|
38 | #include <rtems/bsd/sys/lock.h> |
---|
39 | #include <sys/mutex.h> |
---|
40 | #include <rtems/bsd/sys/errno.h> |
---|
41 | #include <sys/linker.h> |
---|
42 | #include <sys/firmware.h> |
---|
43 | #include <sys/priv.h> |
---|
44 | #include <sys/proc.h> |
---|
45 | #include <sys/module.h> |
---|
46 | #include <sys/eventhandler.h> |
---|
47 | |
---|
48 | #include <sys/filedesc.h> |
---|
49 | #include <sys/vnode.h> |
---|
50 | |
---|
51 | /* |
---|
52 | * Loadable firmware support. See sys/sys/firmware.h and firmware(9) |
---|
53 | * form more details on the subsystem. |
---|
54 | * |
---|
55 | * 'struct firmware' is the user-visible part of the firmware table. |
---|
56 | * Additional internal information is stored in a 'struct priv_fw' |
---|
57 | * (currently a static array). A slot is in use if FW_INUSE is true: |
---|
58 | */ |
---|
59 | |
---|
60 | #define FW_INUSE(p) ((p)->file != NULL || (p)->fw.name != NULL) |
---|
61 | |
---|
62 | /* |
---|
63 | * fw.name != NULL when an image is registered; file != NULL for |
---|
64 | * autoloaded images whose handling has not been completed. |
---|
65 | * |
---|
66 | * The state of a slot evolves as follows: |
---|
67 | * firmware_register --> fw.name = image_name |
---|
68 | * (autoloaded image) --> file = module reference |
---|
69 | * firmware_unregister --> fw.name = NULL |
---|
70 | * (unloadentry complete) --> file = NULL |
---|
71 | * |
---|
72 | * In order for the above to work, the 'file' field must remain |
---|
73 | * unchanged in firmware_unregister(). |
---|
74 | * |
---|
75 | * Images residing in the same module are linked to each other |
---|
76 | * through the 'parent' argument of firmware_register(). |
---|
77 | * One image (typically, one with the same name as the module to let |
---|
78 | * the autoloading mechanism work) is considered the parent image for |
---|
79 | * all other images in the same module. Children affect the refcount |
---|
80 | * on the parent image preventing improper unloading of the image itself. |
---|
81 | */ |
---|
82 | |
---|
83 | struct priv_fw { |
---|
84 | int refcnt; /* reference count */ |
---|
85 | |
---|
86 | /* |
---|
87 | * parent entry, see above. Set on firmware_register(), |
---|
88 | * cleared on firmware_unregister(). |
---|
89 | */ |
---|
90 | struct priv_fw *parent; |
---|
91 | |
---|
92 | int flags; /* record FIRMWARE_UNLOAD requests */ |
---|
93 | #define FW_UNLOAD 0x100 |
---|
94 | |
---|
95 | /* |
---|
96 | * 'file' is private info managed by the autoload/unload code. |
---|
97 | * Set at the end of firmware_get(), cleared only in the |
---|
98 | * firmware_unload_task, so the latter can depend on its value even |
---|
99 | * while the lock is not held. |
---|
100 | */ |
---|
101 | linker_file_t file; /* module file, if autoloaded */ |
---|
102 | |
---|
103 | /* |
---|
104 | * 'fw' is the externally visible image information. |
---|
105 | * We do not make it the first field in priv_fw, to avoid the |
---|
106 | * temptation of casting pointers to each other. |
---|
107 | * Use PRIV_FW(fw) to get a pointer to the cointainer of fw. |
---|
108 | * Beware, PRIV_FW does not work for a NULL pointer. |
---|
109 | */ |
---|
110 | struct firmware fw; /* externally visible information */ |
---|
111 | }; |
---|
112 | |
---|
113 | /* |
---|
114 | * PRIV_FW returns the pointer to the container of struct firmware *x. |
---|
115 | * Cast to intptr_t to override the 'const' attribute of x |
---|
116 | */ |
---|
117 | #define PRIV_FW(x) ((struct priv_fw *) \ |
---|
118 | ((intptr_t)(x) - offsetof(struct priv_fw, fw)) ) |
---|
119 | |
---|
120 | /* |
---|
121 | * At the moment we use a static array as backing store for the registry. |
---|
122 | * Should we move to a dynamic structure, keep in mind that we cannot |
---|
123 | * reallocate the array because pointers are held externally. |
---|
124 | * A list may work, though. |
---|
125 | */ |
---|
126 | #define FIRMWARE_MAX 50 |
---|
127 | static struct priv_fw firmware_table[FIRMWARE_MAX]; |
---|
128 | |
---|
129 | /* |
---|
130 | * Firmware module operations are handled in a separate task as they |
---|
131 | * might sleep and they require directory context to do i/o. |
---|
132 | */ |
---|
133 | static struct taskqueue *firmware_tq; |
---|
134 | static struct task firmware_unload_task; |
---|
135 | |
---|
136 | /* |
---|
137 | * This mutex protects accesses to the firmware table. |
---|
138 | */ |
---|
139 | static struct mtx firmware_mtx; |
---|
140 | MTX_SYSINIT(firmware, &firmware_mtx, "firmware table", MTX_DEF); |
---|
141 | |
---|
142 | /* |
---|
143 | * Helper function to lookup a name. |
---|
144 | * As a side effect, it sets the pointer to a free slot, if any. |
---|
145 | * This way we can concentrate most of the registry scanning in |
---|
146 | * this function, which makes it easier to replace the registry |
---|
147 | * with some other data structure. |
---|
148 | */ |
---|
149 | static struct priv_fw * |
---|
150 | lookup(const char *name, struct priv_fw **empty_slot) |
---|
151 | { |
---|
152 | struct priv_fw *fp = NULL; |
---|
153 | struct priv_fw *dummy; |
---|
154 | int i; |
---|
155 | |
---|
156 | if (empty_slot == NULL) |
---|
157 | empty_slot = &dummy; |
---|
158 | *empty_slot = NULL; |
---|
159 | for (i = 0; i < FIRMWARE_MAX; i++) { |
---|
160 | fp = &firmware_table[i]; |
---|
161 | if (fp->fw.name != NULL && strcasecmp(name, fp->fw.name) == 0) |
---|
162 | break; |
---|
163 | else if (!FW_INUSE(fp)) |
---|
164 | *empty_slot = fp; |
---|
165 | } |
---|
166 | return (i < FIRMWARE_MAX ) ? fp : NULL; |
---|
167 | } |
---|
168 | |
---|
169 | /* |
---|
170 | * Register a firmware image with the specified name. The |
---|
171 | * image name must not already be registered. If this is a |
---|
172 | * subimage then parent refers to a previously registered |
---|
173 | * image that this should be associated with. |
---|
174 | */ |
---|
175 | const struct firmware * |
---|
176 | firmware_register(const char *imagename, const void *data, size_t datasize, |
---|
177 | unsigned int version, const struct firmware *parent) |
---|
178 | { |
---|
179 | struct priv_fw *match, *frp; |
---|
180 | char *str; |
---|
181 | |
---|
182 | str = strdup(imagename, M_TEMP); |
---|
183 | |
---|
184 | mtx_lock(&firmware_mtx); |
---|
185 | /* |
---|
186 | * Do a lookup to make sure the name is unique or find a free slot. |
---|
187 | */ |
---|
188 | match = lookup(imagename, &frp); |
---|
189 | if (match != NULL) { |
---|
190 | mtx_unlock(&firmware_mtx); |
---|
191 | printf("%s: image %s already registered!\n", |
---|
192 | __func__, imagename); |
---|
193 | free(str, M_TEMP); |
---|
194 | return NULL; |
---|
195 | } |
---|
196 | if (frp == NULL) { |
---|
197 | mtx_unlock(&firmware_mtx); |
---|
198 | printf("%s: cannot register image %s, firmware table full!\n", |
---|
199 | __func__, imagename); |
---|
200 | free(str, M_TEMP); |
---|
201 | return NULL; |
---|
202 | } |
---|
203 | bzero(frp, sizeof(*frp)); /* start from a clean record */ |
---|
204 | frp->fw.name = str; |
---|
205 | frp->fw.data = data; |
---|
206 | frp->fw.datasize = datasize; |
---|
207 | frp->fw.version = version; |
---|
208 | if (parent != NULL) |
---|
209 | frp->parent = PRIV_FW(parent); |
---|
210 | mtx_unlock(&firmware_mtx); |
---|
211 | if (bootverbose) |
---|
212 | printf("firmware: '%s' version %u: %zu bytes loaded at %p\n", |
---|
213 | imagename, version, datasize, data); |
---|
214 | return &frp->fw; |
---|
215 | } |
---|
216 | |
---|
217 | /* |
---|
218 | * Unregister/remove a firmware image. If there are outstanding |
---|
219 | * references an error is returned and the image is not removed |
---|
220 | * from the registry. |
---|
221 | */ |
---|
222 | int |
---|
223 | firmware_unregister(const char *imagename) |
---|
224 | { |
---|
225 | struct priv_fw *fp; |
---|
226 | int err; |
---|
227 | |
---|
228 | mtx_lock(&firmware_mtx); |
---|
229 | fp = lookup(imagename, NULL); |
---|
230 | if (fp == NULL) { |
---|
231 | /* |
---|
232 | * It is ok for the lookup to fail; this can happen |
---|
233 | * when a module is unloaded on last reference and the |
---|
234 | * module unload handler unregister's each of it's |
---|
235 | * firmware images. |
---|
236 | */ |
---|
237 | err = 0; |
---|
238 | } else if (fp->refcnt != 0) { /* cannot unregister */ |
---|
239 | err = EBUSY; |
---|
240 | } else { |
---|
241 | linker_file_t x = fp->file; /* save value */ |
---|
242 | |
---|
243 | /* |
---|
244 | * Clear the whole entry with bzero to make sure we |
---|
245 | * do not forget anything. Then restore 'file' which is |
---|
246 | * non-null for autoloaded images. |
---|
247 | */ |
---|
248 | free((void *) (uintptr_t) fp->fw.name, M_TEMP); |
---|
249 | bzero(fp, sizeof(struct priv_fw)); |
---|
250 | fp->file = x; |
---|
251 | err = 0; |
---|
252 | } |
---|
253 | mtx_unlock(&firmware_mtx); |
---|
254 | return err; |
---|
255 | } |
---|
256 | |
---|
257 | #ifndef __rtems__ |
---|
258 | static void |
---|
259 | loadimage(void *arg, int npending) |
---|
260 | { |
---|
261 | struct thread *td = curthread; |
---|
262 | char *imagename = arg; |
---|
263 | struct priv_fw *fp; |
---|
264 | linker_file_t result; |
---|
265 | int error; |
---|
266 | |
---|
267 | /* synchronize with the thread that dispatched us */ |
---|
268 | mtx_lock(&firmware_mtx); |
---|
269 | mtx_unlock(&firmware_mtx); |
---|
270 | |
---|
271 | if (td->td_proc->p_fd->fd_rdir == NULL) { |
---|
272 | printf("%s: root not mounted yet, no way to load image\n", |
---|
273 | imagename); |
---|
274 | goto done; |
---|
275 | } |
---|
276 | error = linker_reference_module(imagename, NULL, &result); |
---|
277 | if (error != 0) { |
---|
278 | printf("%s: could not load firmware image, error %d\n", |
---|
279 | imagename, error); |
---|
280 | goto done; |
---|
281 | } |
---|
282 | |
---|
283 | mtx_lock(&firmware_mtx); |
---|
284 | fp = lookup(imagename, NULL); |
---|
285 | if (fp == NULL || fp->file != NULL) { |
---|
286 | mtx_unlock(&firmware_mtx); |
---|
287 | if (fp == NULL) |
---|
288 | printf("%s: firmware image loaded, " |
---|
289 | "but did not register\n", imagename); |
---|
290 | (void) linker_release_module(imagename, NULL, NULL); |
---|
291 | goto done; |
---|
292 | } |
---|
293 | fp->file = result; /* record the module identity */ |
---|
294 | mtx_unlock(&firmware_mtx); |
---|
295 | done: |
---|
296 | wakeup_one(imagename); /* we're done */ |
---|
297 | } |
---|
298 | #endif /* __rtems__ */ |
---|
299 | |
---|
300 | /* |
---|
301 | * Lookup and potentially load the specified firmware image. |
---|
302 | * If the firmware is not found in the registry, try to load a kernel |
---|
303 | * module named as the image name. |
---|
304 | * If the firmware is located, a reference is returned. The caller must |
---|
305 | * release this reference for the image to be eligible for removal/unload. |
---|
306 | */ |
---|
307 | const struct firmware * |
---|
308 | firmware_get(const char *imagename) |
---|
309 | { |
---|
310 | #ifndef __rtems__ |
---|
311 | struct task fwload_task; |
---|
312 | struct thread *td; |
---|
313 | #endif /* __rtems__ */ |
---|
314 | struct priv_fw *fp; |
---|
315 | |
---|
316 | mtx_lock(&firmware_mtx); |
---|
317 | fp = lookup(imagename, NULL); |
---|
318 | if (fp != NULL) |
---|
319 | goto found; |
---|
320 | #ifndef __rtems__ |
---|
321 | /* |
---|
322 | * Image not present, try to load the module holding it. |
---|
323 | */ |
---|
324 | td = curthread; |
---|
325 | if (priv_check(td, PRIV_FIRMWARE_LOAD) != 0 || |
---|
326 | securelevel_gt(td->td_ucred, 0) != 0) { |
---|
327 | mtx_unlock(&firmware_mtx); |
---|
328 | printf("%s: insufficient privileges to " |
---|
329 | "load firmware image %s\n", __func__, imagename); |
---|
330 | return NULL; |
---|
331 | } |
---|
332 | /* |
---|
333 | * Defer load to a thread with known context. linker_reference_module |
---|
334 | * may do filesystem i/o which requires root & current dirs, etc. |
---|
335 | * Also we must not hold any mtx's over this call which is problematic. |
---|
336 | */ |
---|
337 | if (!cold) { |
---|
338 | TASK_INIT(&fwload_task, 0, loadimage, __DECONST(void *, |
---|
339 | imagename)); |
---|
340 | taskqueue_enqueue(firmware_tq, &fwload_task); |
---|
341 | msleep(__DECONST(void *, imagename), &firmware_mtx, 0, |
---|
342 | "fwload", 0); |
---|
343 | } |
---|
344 | /* |
---|
345 | * After attempting to load the module, see if the image is registered. |
---|
346 | */ |
---|
347 | fp = lookup(imagename, NULL); |
---|
348 | if (fp == NULL) { |
---|
349 | mtx_unlock(&firmware_mtx); |
---|
350 | return NULL; |
---|
351 | } |
---|
352 | #else /* __rtems__ */ |
---|
353 | return NULL; |
---|
354 | #endif /* __rtems__ */ |
---|
355 | found: /* common exit point on success */ |
---|
356 | if (fp->refcnt == 0 && fp->parent != NULL) |
---|
357 | fp->parent->refcnt++; |
---|
358 | fp->refcnt++; |
---|
359 | mtx_unlock(&firmware_mtx); |
---|
360 | return &fp->fw; |
---|
361 | } |
---|
362 | |
---|
363 | /* |
---|
364 | * Release a reference to a firmware image returned by firmware_get. |
---|
365 | * The caller may specify, with the FIRMWARE_UNLOAD flag, its desire |
---|
366 | * to release the resource, but the flag is only advisory. |
---|
367 | * |
---|
368 | * If this is the last reference to the firmware image, and this is an |
---|
369 | * autoloaded module, wake up the firmware_unload_task to figure out |
---|
370 | * what to do with the associated module. |
---|
371 | */ |
---|
372 | void |
---|
373 | firmware_put(const struct firmware *p, int flags) |
---|
374 | { |
---|
375 | struct priv_fw *fp = PRIV_FW(p); |
---|
376 | |
---|
377 | mtx_lock(&firmware_mtx); |
---|
378 | fp->refcnt--; |
---|
379 | if (fp->refcnt == 0) { |
---|
380 | if (fp->parent != NULL) |
---|
381 | fp->parent->refcnt--; |
---|
382 | if (flags & FIRMWARE_UNLOAD) |
---|
383 | fp->flags |= FW_UNLOAD; |
---|
384 | if (fp->file) |
---|
385 | taskqueue_enqueue(firmware_tq, &firmware_unload_task); |
---|
386 | } |
---|
387 | mtx_unlock(&firmware_mtx); |
---|
388 | } |
---|
389 | |
---|
390 | #ifndef __rtems__ |
---|
391 | /* |
---|
392 | * Setup directory state for the firmware_tq thread so we can do i/o. |
---|
393 | */ |
---|
394 | static void |
---|
395 | set_rootvnode(void *arg, int npending) |
---|
396 | { |
---|
397 | |
---|
398 | pwd_ensure_dirs(); |
---|
399 | |
---|
400 | free(arg, M_TEMP); |
---|
401 | } |
---|
402 | |
---|
403 | /* |
---|
404 | * Event handler called on mounting of /; bounce a task |
---|
405 | * into the task queue thread to setup it's directories. |
---|
406 | */ |
---|
407 | static void |
---|
408 | firmware_mountroot(void *arg) |
---|
409 | { |
---|
410 | struct task *setroot_task; |
---|
411 | |
---|
412 | setroot_task = malloc(sizeof(struct task), M_TEMP, M_NOWAIT); |
---|
413 | if (setroot_task != NULL) { |
---|
414 | TASK_INIT(setroot_task, 0, set_rootvnode, setroot_task); |
---|
415 | taskqueue_enqueue(firmware_tq, setroot_task); |
---|
416 | } else |
---|
417 | printf("%s: no memory for task!\n", __func__); |
---|
418 | } |
---|
419 | EVENTHANDLER_DEFINE(mountroot, firmware_mountroot, NULL, 0); |
---|
420 | |
---|
421 | /* |
---|
422 | * The body of the task in charge of unloading autoloaded modules |
---|
423 | * that are not needed anymore. |
---|
424 | * Images can be cross-linked so we may need to make multiple passes, |
---|
425 | * but the time we spend in the loop is bounded because we clear entries |
---|
426 | * as we touch them. |
---|
427 | */ |
---|
428 | static void |
---|
429 | unloadentry(void *unused1, int unused2) |
---|
430 | { |
---|
431 | int limit = FIRMWARE_MAX; |
---|
432 | int i; /* current cycle */ |
---|
433 | |
---|
434 | mtx_lock(&firmware_mtx); |
---|
435 | /* |
---|
436 | * Scan the table. limit is set to make sure we make another |
---|
437 | * full sweep after matching an entry that requires unloading. |
---|
438 | */ |
---|
439 | for (i = 0; i < limit; i++) { |
---|
440 | struct priv_fw *fp; |
---|
441 | int err; |
---|
442 | |
---|
443 | fp = &firmware_table[i % FIRMWARE_MAX]; |
---|
444 | if (fp->fw.name == NULL || fp->file == NULL || |
---|
445 | fp->refcnt != 0 || (fp->flags & FW_UNLOAD) == 0) |
---|
446 | continue; |
---|
447 | |
---|
448 | /* |
---|
449 | * Found an entry. Now: |
---|
450 | * 1. bump up limit to make sure we make another full round; |
---|
451 | * 2. clear FW_UNLOAD so we don't try this entry again. |
---|
452 | * 3. release the lock while trying to unload the module. |
---|
453 | * 'file' remains set so that the entry cannot be reused |
---|
454 | * in the meantime (it also means that fp->file will |
---|
455 | * not change while we release the lock). |
---|
456 | */ |
---|
457 | limit = i + FIRMWARE_MAX; /* make another full round */ |
---|
458 | fp->flags &= ~FW_UNLOAD; /* do not try again */ |
---|
459 | |
---|
460 | mtx_unlock(&firmware_mtx); |
---|
461 | err = linker_release_module(NULL, NULL, fp->file); |
---|
462 | mtx_lock(&firmware_mtx); |
---|
463 | |
---|
464 | /* |
---|
465 | * We rely on the module to call firmware_unregister() |
---|
466 | * on unload to actually release the entry. |
---|
467 | * If err = 0 we can drop our reference as the system |
---|
468 | * accepted it. Otherwise unloading failed (e.g. the |
---|
469 | * module itself gave an error) so our reference is |
---|
470 | * still valid. |
---|
471 | */ |
---|
472 | if (err == 0) |
---|
473 | fp->file = NULL; |
---|
474 | } |
---|
475 | mtx_unlock(&firmware_mtx); |
---|
476 | } |
---|
477 | |
---|
478 | /* |
---|
479 | * Module glue. |
---|
480 | */ |
---|
481 | static int |
---|
482 | firmware_modevent(module_t mod, int type, void *unused) |
---|
483 | { |
---|
484 | struct priv_fw *fp; |
---|
485 | int i, err; |
---|
486 | |
---|
487 | switch (type) { |
---|
488 | case MOD_LOAD: |
---|
489 | TASK_INIT(&firmware_unload_task, 0, unloadentry, NULL); |
---|
490 | firmware_tq = taskqueue_create("taskqueue_firmware", M_WAITOK, |
---|
491 | taskqueue_thread_enqueue, &firmware_tq); |
---|
492 | /* NB: use our own loop routine that sets up context */ |
---|
493 | (void) taskqueue_start_threads(&firmware_tq, 1, PWAIT, |
---|
494 | "firmware taskq"); |
---|
495 | if (rootvnode != NULL) { |
---|
496 | /* |
---|
497 | * Root is already mounted so we won't get an event; |
---|
498 | * simulate one here. |
---|
499 | */ |
---|
500 | firmware_mountroot(NULL); |
---|
501 | } |
---|
502 | return 0; |
---|
503 | |
---|
504 | case MOD_UNLOAD: |
---|
505 | /* request all autoloaded modules to be released */ |
---|
506 | mtx_lock(&firmware_mtx); |
---|
507 | for (i = 0; i < FIRMWARE_MAX; i++) { |
---|
508 | fp = &firmware_table[i]; |
---|
509 | fp->flags |= FW_UNLOAD; |
---|
510 | } |
---|
511 | mtx_unlock(&firmware_mtx); |
---|
512 | taskqueue_enqueue(firmware_tq, &firmware_unload_task); |
---|
513 | taskqueue_drain(firmware_tq, &firmware_unload_task); |
---|
514 | err = 0; |
---|
515 | for (i = 0; i < FIRMWARE_MAX; i++) { |
---|
516 | fp = &firmware_table[i]; |
---|
517 | if (fp->fw.name != NULL) { |
---|
518 | printf("%s: image %p ref %d still active slot %d\n", |
---|
519 | __func__, fp->fw.name, |
---|
520 | fp->refcnt, i); |
---|
521 | err = EINVAL; |
---|
522 | } |
---|
523 | } |
---|
524 | if (err == 0) |
---|
525 | taskqueue_free(firmware_tq); |
---|
526 | return err; |
---|
527 | } |
---|
528 | return EINVAL; |
---|
529 | } |
---|
530 | |
---|
531 | static moduledata_t firmware_mod = { |
---|
532 | "firmware", |
---|
533 | firmware_modevent, |
---|
534 | NULL |
---|
535 | }; |
---|
536 | DECLARE_MODULE(firmware, firmware_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); |
---|
537 | MODULE_VERSION(firmware, 1); |
---|
538 | #endif /* __rtems__ */ |
---|