Lines Matching +full:firmware +full:- +full:name
1 // SPDX-License-Identifier: GPL-2.0
3 * main.c - Multi purpose firmware loading support
7 * Please see Documentation/driver-api/firmware/ for more information.
26 #include <linux/firmware.h>
44 #include "firmware.h"
48 MODULE_DESCRIPTION("Multi purpose firmware loading support");
59 * Names of firmware images which have been cached successfully
61 * helper can trace which firmware images have been cached
75 const char *name; member
80 const char *name; member
99 struct fw_state *fw_st = &fw_priv->fw_st; in fw_state_init()
101 init_completion(&fw_st->completion); in fw_state_init()
102 fw_st->status = FW_STATUS_UNKNOWN; in fw_state_init()
133 fw_priv->fw_name = kstrdup_const(fw_name, GFP_ATOMIC); in __allocate_fw_priv()
134 if (!fw_priv->fw_name) { in __allocate_fw_priv()
139 kref_init(&fw_priv->ref); in __allocate_fw_priv()
140 fw_priv->fwc = fwc; in __allocate_fw_priv()
141 fw_priv->data = dbuf; in __allocate_fw_priv()
142 fw_priv->allocated_size = size; in __allocate_fw_priv()
143 fw_priv->offset = offset; in __allocate_fw_priv()
144 fw_priv->opt_flags = opt_flags; in __allocate_fw_priv()
147 INIT_LIST_HEAD(&fw_priv->pending_list); in __allocate_fw_priv()
150 pr_debug("%s: fw-%s fw_priv=%p\n", __func__, fw_name, fw_priv); in __allocate_fw_priv()
160 list_for_each_entry(tmp, &fwc->head, list) in __lookup_fw_priv()
161 if (!strcmp(tmp->fw_name, fw_name)) in __lookup_fw_priv()
166 /* Returns 1 for batching firmware requests with the same name */
173 spin_lock(&fwc->lock); in alloc_lookup_fw_priv()
175 * Do not merge requests that are marked to be non-cached or in alloc_lookup_fw_priv()
181 kref_get(&tmp->ref); in alloc_lookup_fw_priv()
182 spin_unlock(&fwc->lock); in alloc_lookup_fw_priv()
184 pr_debug("batched request - sharing the same struct fw_priv and lookup for multiple requests\n"); in alloc_lookup_fw_priv()
191 INIT_LIST_HEAD(&tmp->list); in alloc_lookup_fw_priv()
193 list_add(&tmp->list, &fwc->head); in alloc_lookup_fw_priv()
195 spin_unlock(&fwc->lock); in alloc_lookup_fw_priv()
199 return tmp ? 0 : -ENOMEM; in alloc_lookup_fw_priv()
203 __releases(&fwc->lock) in __free_fw_priv()
206 struct firmware_cache *fwc = fw_priv->fwc; in __free_fw_priv()
208 pr_debug("%s: fw-%s fw_priv=%p data=%p size=%u\n", in __free_fw_priv()
209 __func__, fw_priv->fw_name, fw_priv, fw_priv->data, in __free_fw_priv()
210 (unsigned int)fw_priv->size); in __free_fw_priv()
212 list_del(&fw_priv->list); in __free_fw_priv()
213 spin_unlock(&fwc->lock); in __free_fw_priv()
217 else if (!fw_priv->allocated_size) in __free_fw_priv()
218 vfree(fw_priv->data); in __free_fw_priv()
220 kfree_const(fw_priv->fw_name); in __free_fw_priv()
226 struct firmware_cache *fwc = fw_priv->fwc; in free_fw_priv()
227 spin_lock(&fwc->lock); in free_fw_priv()
228 if (!kref_put(&fw_priv->ref, __free_fw_priv)) in free_fw_priv()
229 spin_unlock(&fwc->lock); in free_fw_priv()
235 return fw_priv->is_paged_buf; in fw_is_paged_buf()
242 if (!fw_priv->pages) in fw_free_paged_buf()
245 vunmap(fw_priv->data); in fw_free_paged_buf()
247 for (i = 0; i < fw_priv->nr_pages; i++) in fw_free_paged_buf()
248 __free_page(fw_priv->pages[i]); in fw_free_paged_buf()
249 kvfree(fw_priv->pages); in fw_free_paged_buf()
250 fw_priv->pages = NULL; in fw_free_paged_buf()
251 fw_priv->page_array_size = 0; in fw_free_paged_buf()
252 fw_priv->nr_pages = 0; in fw_free_paged_buf()
253 fw_priv->data = NULL; in fw_free_paged_buf()
254 fw_priv->size = 0; in fw_free_paged_buf()
260 if (fw_priv->page_array_size < pages_needed) { in fw_grow_paged_buf()
262 fw_priv->page_array_size * 2); in fw_grow_paged_buf()
268 return -ENOMEM; in fw_grow_paged_buf()
269 memcpy(new_pages, fw_priv->pages, in fw_grow_paged_buf()
270 fw_priv->page_array_size * sizeof(void *)); in fw_grow_paged_buf()
271 memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) * in fw_grow_paged_buf()
272 (new_array_size - fw_priv->page_array_size)); in fw_grow_paged_buf()
273 kvfree(fw_priv->pages); in fw_grow_paged_buf()
274 fw_priv->pages = new_pages; in fw_grow_paged_buf()
275 fw_priv->page_array_size = new_array_size; in fw_grow_paged_buf()
278 while (fw_priv->nr_pages < pages_needed) { in fw_grow_paged_buf()
279 fw_priv->pages[fw_priv->nr_pages] = in fw_grow_paged_buf()
282 if (!fw_priv->pages[fw_priv->nr_pages]) in fw_grow_paged_buf()
283 return -ENOMEM; in fw_grow_paged_buf()
284 fw_priv->nr_pages++; in fw_grow_paged_buf()
293 if (!fw_priv->pages) in fw_map_paged_buf()
296 vunmap(fw_priv->data); in fw_map_paged_buf()
297 fw_priv->data = vmap(fw_priv->pages, fw_priv->nr_pages, 0, in fw_map_paged_buf()
299 if (!fw_priv->data) in fw_map_paged_buf()
300 return -ENOMEM; in fw_map_paged_buf()
307 * ZSTD-compressed firmware support
318 if (fw_priv->allocated_size) { in fw_decompress_zstd()
319 out_size = fw_priv->allocated_size; in fw_decompress_zstd()
320 out_buf = fw_priv->data; in fw_decompress_zstd()
327 return -EINVAL; in fw_decompress_zstd()
332 return -ENOMEM; in fw_decompress_zstd()
338 err = -ENOMEM; in fw_decompress_zstd()
345 err = -EINVAL; in fw_decompress_zstd()
353 err = -EINVAL; in fw_decompress_zstd()
357 if (!fw_priv->allocated_size) in fw_decompress_zstd()
358 fw_priv->data = out_buf; in fw_decompress_zstd()
359 fw_priv->size = len; in fw_decompress_zstd()
364 if (err && !fw_priv->allocated_size) in fw_decompress_zstd()
371 * XZ-compressed firmware support
379 return xz_ret == XZ_MEM_ERROR ? -ENOMEM : -EINVAL; in fw_decompress_xz_error()
384 /* single-shot decompression onto the pre-allocated buffer */
392 xz_dec = xz_dec_init(XZ_SINGLE, (u32)-1); in fw_decompress_xz_single()
394 return -ENOMEM; in fw_decompress_xz_single()
399 xz_buf.out_size = fw_priv->allocated_size; in fw_decompress_xz_single()
400 xz_buf.out = fw_priv->data; in fw_decompress_xz_single()
406 fw_priv->size = xz_buf.out_pos; in fw_decompress_xz_single()
420 xz_dec = xz_dec_init(XZ_DYNALLOC, (u32)-1); in fw_decompress_xz_pages()
422 return -ENOMEM; in fw_decompress_xz_pages()
428 fw_priv->is_paged_buf = true; in fw_decompress_xz_pages()
429 fw_priv->size = 0; in fw_decompress_xz_pages()
431 if (fw_grow_paged_buf(fw_priv, fw_priv->nr_pages + 1)) { in fw_decompress_xz_pages()
432 err = -ENOMEM; in fw_decompress_xz_pages()
437 page = fw_priv->pages[fw_priv->nr_pages - 1]; in fw_decompress_xz_pages()
443 fw_priv->size += xz_buf.out_pos; in fw_decompress_xz_pages()
461 /* if the buffer is pre-allocated, we can perform in single-shot mode */ in fw_decompress_xz()
462 if (fw_priv->data) in fw_decompress_xz()
469 /* direct firmware loading support */
473 "/lib/firmware/updates/" UTS_RELEASE,
474 "/lib/firmware/updates",
475 "/lib/firmware/" UTS_RELEASE,
476 "/lib/firmware"
485 MODULE_PARM_DESC(path, "customized firmware image search path with a higher priority than default p…
497 int rc = -ENOENT; in fw_get_filesystem_firmware()
503 if (!decompress && fw_priv->data) { in fw_get_filesystem_firmware()
504 buffer = fw_priv->data; in fw_get_filesystem_firmware()
505 msize = fw_priv->allocated_size; in fw_get_filesystem_firmware()
510 return -ENOMEM; in fw_get_filesystem_firmware()
526 maxlen = nt - fw_path[i]; in fw_get_filesystem_firmware()
531 fw_priv->fw_name, suffix); in fw_get_filesystem_firmware()
533 rc = -ENAMETOOLONG; in fw_get_filesystem_firmware()
537 fw_priv->size = 0; in fw_get_filesystem_firmware()
542 * firmware was not completely loaded. in fw_get_filesystem_firmware()
544 if ((fw_priv->opt_flags & FW_OPT_PARTIAL) && buffer) in fw_get_filesystem_firmware()
547 /* load firmware files from the mount namespace of init */ in fw_get_filesystem_firmware()
548 rc = kernel_read_file_from_path_initns(path, fw_priv->offset, in fw_get_filesystem_firmware()
553 if (rc != -ENOENT) in fw_get_filesystem_firmware()
564 dev_dbg(device, "Loading firmware from %s\n", path); in fw_get_filesystem_firmware()
567 fw_priv->fw_name); in fw_get_filesystem_firmware()
577 dev_dbg(device, "direct-loading %s\n", in fw_get_filesystem_firmware()
578 fw_priv->fw_name); in fw_get_filesystem_firmware()
579 if (!fw_priv->data) in fw_get_filesystem_firmware()
580 fw_priv->data = buffer; in fw_get_filesystem_firmware()
581 fw_priv->size = size; in fw_get_filesystem_firmware()
591 /* firmware holds the ownership of pages */
592 static void firmware_free_data(const struct firmware *fw) in firmware_free_data()
595 if (!fw->priv) { in firmware_free_data()
596 vfree(fw->data); in firmware_free_data()
599 free_fw_priv(fw->priv); in firmware_free_data()
602 /* store the pages buffer info firmware from buf */
603 static void fw_set_page_data(struct fw_priv *fw_priv, struct firmware *fw) in fw_set_page_data()
605 fw->priv = fw_priv; in fw_set_page_data()
606 fw->size = fw_priv->size; in fw_set_page_data()
607 fw->data = fw_priv->data; in fw_set_page_data()
609 pr_debug("%s: fw-%s fw_priv=%p data=%p size=%u\n", in fw_set_page_data()
610 __func__, fw_priv->fw_name, fw_priv, fw_priv->data, in fw_set_page_data()
611 (unsigned int)fw_priv->size); in fw_set_page_data()
619 if (fwn->magic == (unsigned long)&fw_cache) in fw_name_devm_release()
620 pr_debug("%s: fw_name-%s devm-%p released\n", in fw_name_devm_release()
621 __func__, fwn->name, res); in fw_name_devm_release()
622 kfree_const(fwn->name); in fw_name_devm_release()
630 return (fwn->magic == (unsigned long)&fw_cache) && in fw_devm_match()
631 !strcmp(fwn->name, match_data); in fw_devm_match()
635 const char *name) in fw_find_devm_name() argument
640 fw_devm_match, (void *)name); in fw_find_devm_name()
644 static bool fw_cache_is_setup(struct device *dev, const char *name) in fw_cache_is_setup() argument
648 fwn = fw_find_devm_name(dev, name); in fw_cache_is_setup()
655 /* add firmware name into devres list */
656 static int fw_add_devm_name(struct device *dev, const char *name) in fw_add_devm_name() argument
660 if (fw_cache_is_setup(dev, name)) in fw_add_devm_name()
666 return -ENOMEM; in fw_add_devm_name()
667 fwn->name = kstrdup_const(name, GFP_KERNEL); in fw_add_devm_name()
668 if (!fwn->name) { in fw_add_devm_name()
670 return -ENOMEM; in fw_add_devm_name()
673 fwn->magic = (unsigned long)&fw_cache; in fw_add_devm_name()
679 static bool fw_cache_is_setup(struct device *dev, const char *name) in fw_cache_is_setup() argument
684 static int fw_add_devm_name(struct device *dev, const char *name) in fw_add_devm_name() argument
690 int assign_fw(struct firmware *fw, struct device *device) in assign_fw()
692 struct fw_priv *fw_priv = fw->priv; in assign_fw()
696 if (!fw_priv->size || fw_state_is_aborted(fw_priv)) { in assign_fw()
698 return -ENOENT; in assign_fw()
702 * add firmware name into devres list so that we can auto cache in assign_fw()
703 * and uncache firmware for device. in assign_fw()
708 /* don't cache firmware handled without uevent */ in assign_fw()
709 if (device && (fw_priv->opt_flags & FW_OPT_UEVENT) && in assign_fw()
710 !(fw_priv->opt_flags & FW_OPT_NOCACHE)) { in assign_fw()
711 ret = fw_add_devm_name(device, fw_priv->fw_name); in assign_fw()
719 * After caching firmware image is started, let it piggyback in assign_fw()
720 * on request firmware. in assign_fw()
722 if (!(fw_priv->opt_flags & FW_OPT_NOCACHE) && in assign_fw()
723 fw_priv->fwc->state == FW_LOADER_START_CACHE) in assign_fw()
732 /* prepare firmware and firmware_buf structs;
733 * return 0 if a firmware is already assigned, 1 if need to load one,
737 _request_firmware_prepare(struct firmware **firmware_p, const char *name, in _request_firmware_prepare() argument
741 struct firmware *firmware; in _request_firmware_prepare() local
745 *firmware_p = firmware = kzalloc(sizeof(*firmware), GFP_KERNEL); in _request_firmware_prepare()
746 if (!firmware) { in _request_firmware_prepare()
747 dev_err(device, "%s: kmalloc(struct firmware) failed\n", in _request_firmware_prepare()
749 return -ENOMEM; in _request_firmware_prepare()
752 if (firmware_request_builtin_buf(firmware, name, dbuf, size)) { in _request_firmware_prepare()
753 dev_dbg(device, "using built-in %s\n", name); in _request_firmware_prepare()
757 ret = alloc_lookup_fw_priv(name, &fw_cache, &fw_priv, dbuf, size, in _request_firmware_prepare()
762 * of requesting firmware. in _request_firmware_prepare()
764 firmware->priv = fw_priv; in _request_firmware_prepare()
769 fw_set_page_data(fw_priv, firmware); in _request_firmware_prepare()
788 static void fw_abort_batch_reqs(struct firmware *fw) in fw_abort_batch_reqs()
793 if (!fw || !fw->priv) in fw_abort_batch_reqs()
796 fw_priv = fw->priv; in fw_abort_batch_reqs()
807 static void fw_log_firmware_info(const struct firmware *fw, const char *name, struct device *device) in fw_log_firmware_info() argument
824 shash->tfm = alg; in fw_log_firmware_info()
826 if (crypto_shash_digest(shash, fw->data, fw->size, sha256buf) < 0) in fw_log_firmware_info()
832 dev_dbg(device, "Loaded FW: %s, sha256: %s\n", name, outbuf); in fw_log_firmware_info()
841 static void fw_log_firmware_info(const struct firmware *fw, const char *name, in fw_log_firmware_info() argument
847 * Reject firmware file names with ".." path components.
848 * There are drivers that construct firmware file names from device-supplied
850 * be sent my firmware from ../../../etc/shadow, please".
854 * This intentionally only looks at the firmware name, not at the firmware base
857 static bool name_contains_dotdot(const char *name) in name_contains_dotdot() argument
859 size_t name_len = strlen(name); in name_contains_dotdot()
861 return strcmp(name, "..") == 0 || strncmp(name, "../", 3) == 0 || in name_contains_dotdot()
862 strstr(name, "/../") != NULL || in name_contains_dotdot()
863 (name_len >= 3 && strcmp(name+name_len-3, "/..") == 0); in name_contains_dotdot()
868 _request_firmware(const struct firmware **firmware_p, const char *name, in _request_firmware() argument
872 struct firmware *fw = NULL; in _request_firmware()
879 return -EINVAL; in _request_firmware()
881 if (!name || name[0] == '\0') { in _request_firmware()
882 ret = -EINVAL; in _request_firmware()
886 if (name_contains_dotdot(name)) { in _request_firmware()
888 "Firmware load for '%s' refused, path contains '..' component\n", in _request_firmware()
889 name); in _request_firmware()
890 ret = -EINVAL; in _request_firmware()
894 ret = _request_firmware_prepare(&fw, name, device, buf, size, in _request_firmware()
900 * We are about to try to access the firmware file. Because we may have been in _request_firmware()
906 ret = -ENOMEM; in _request_firmware()
911 ret = fw_get_filesystem_firmware(device, fw->priv, "", NULL); in _request_firmware()
918 if (ret == -ENOENT && nondirect) in _request_firmware()
919 ret = fw_get_filesystem_firmware(device, fw->priv, ".zst", in _request_firmware()
923 if (ret == -ENOENT && nondirect) in _request_firmware()
924 ret = fw_get_filesystem_firmware(device, fw->priv, ".xz", in _request_firmware()
927 if (ret == -ENOENT && nondirect) in _request_firmware()
928 ret = firmware_fallback_platform(fw->priv); in _request_firmware()
933 "Direct firmware load for %s failed with error %d\n", in _request_firmware()
934 name, ret); in _request_firmware()
936 ret = firmware_fallback_sysfs(fw, name, device, in _request_firmware()
950 fw_log_firmware_info(fw, name, device); in _request_firmware()
958 * request_firmware() - send firmware request and wait for it
959 * @firmware_p: pointer to firmware image
960 * @name: name of firmware file
961 * @device: device for which firmware is being loaded
963 * @firmware_p will be used to return a firmware image by the name
964 * of @name for device @device.
968 * @name will be used as $FIRMWARE in the uevent environment and
970 * firmware image for this or any other device.
971 * It must not contain any ".." path components - "foo/bar..bin" is
980 request_firmware(const struct firmware **firmware_p, const char *name, in request_firmware() argument
987 ret = _request_firmware(firmware_p, name, device, NULL, 0, 0, in request_firmware()
995 * firmware_request_nowarn() - request for an optional fw module
996 * @firmware: pointer to firmware image
997 * @name: name of firmware file
998 * @device: device for which firmware is being loaded
1003 * failures to find the firmware file with it are still suppressed. It is
1007 int firmware_request_nowarn(const struct firmware **firmware, const char *name, in firmware_request_nowarn() argument
1014 ret = _request_firmware(firmware, name, device, NULL, 0, 0, in firmware_request_nowarn()
1022 * request_firmware_direct() - load firmware directly without usermode helper
1023 * @firmware_p: pointer to firmware image
1024 * @name: name of firmware file
1025 * @device: device for which firmware is being loaded
1028 * fall back to usermode helper even if the firmware couldn't be loaded
1032 int request_firmware_direct(const struct firmware **firmware_p, in request_firmware_direct()
1033 const char *name, struct device *device) in request_firmware_direct() argument
1038 ret = _request_firmware(firmware_p, name, device, NULL, 0, 0, in request_firmware_direct()
1047 * firmware_request_platform() - request firmware with platform-fw fallback
1048 * @firmware: pointer to firmware image
1049 * @name: name of firmware file
1050 * @device: device for which firmware is being loaded
1054 * requested firmware embedded in the platform's main (e.g. UEFI) firmware.
1056 int firmware_request_platform(const struct firmware **firmware, in firmware_request_platform() argument
1057 const char *name, struct device *device) in firmware_request_platform() argument
1063 ret = _request_firmware(firmware, name, device, NULL, 0, 0, in firmware_request_platform()
1071 * firmware_request_cache() - cache firmware for suspend so resume can use it
1072 * @name: name of firmware file
1073 * @device: device for which firmware should be cached for
1076 * require loading firmware on system reboot. This optimization may still
1077 * require the firmware present on resume from suspend. This routine can be
1078 * used to ensure the firmware is present on resume from suspend in these
1082 int firmware_request_cache(struct device *device, const char *name) in firmware_request_cache() argument
1087 ret = fw_add_devm_name(device, name); in firmware_request_cache()
1095 * request_firmware_into_buf() - load firmware into a previously allocated buffer
1096 * @firmware_p: pointer to firmware image
1097 * @name: name of firmware file
1098 * @device: device for which firmware is being loaded and DMA region allocated
1099 * @buf: address of buffer to load firmware into
1103 * allocate a buffer to hold the firmware data. Instead, the firmware
1107 * This function doesn't cache firmware either.
1110 request_firmware_into_buf(const struct firmware **firmware_p, const char *name, in request_firmware_into_buf() argument
1115 if (fw_cache_is_setup(device, name)) in request_firmware_into_buf()
1116 return -EOPNOTSUPP; in request_firmware_into_buf()
1119 ret = _request_firmware(firmware_p, name, device, buf, size, 0, in request_firmware_into_buf()
1127 * request_partial_firmware_into_buf() - load partial firmware into a previously allocated buffer
1128 * @firmware_p: pointer to firmware image
1129 * @name: name of firmware file
1130 * @device: device for which firmware is being loaded and DMA region allocated
1131 * @buf: address of buffer to load firmware into
1139 request_partial_firmware_into_buf(const struct firmware **firmware_p, in request_partial_firmware_into_buf()
1140 const char *name, struct device *device, in request_partial_firmware_into_buf() argument
1145 if (fw_cache_is_setup(device, name)) in request_partial_firmware_into_buf()
1146 return -EOPNOTSUPP; in request_partial_firmware_into_buf()
1149 ret = _request_firmware(firmware_p, name, device, buf, size, offset, in request_partial_firmware_into_buf()
1158 * release_firmware() - release the resource associated with a firmware image
1159 * @fw: firmware resource to release
1161 void release_firmware(const struct firmware *fw) in release_firmware()
1175 const char *name; member
1178 void (*cont)(const struct firmware *fw, void *context);
1185 const struct firmware *fw; in request_firmware_work_func()
1189 _request_firmware(&fw, fw_work->name, fw_work->device, NULL, 0, 0, in request_firmware_work_func()
1190 fw_work->opt_flags); in request_firmware_work_func()
1191 fw_work->cont(fw, fw_work->context); in request_firmware_work_func()
1192 put_device(fw_work->device); /* taken in request_firmware_nowait() */ in request_firmware_work_func()
1194 module_put(fw_work->module); in request_firmware_work_func()
1195 kfree_const(fw_work->name); in request_firmware_work_func()
1200 * request_firmware_nowait() - asynchronous version of request_firmware
1201 * @module: module requesting the firmware
1202 * @uevent: sends uevent to copy the firmware image if this flag
1203 * is non-zero else the firmware copy must be done manually.
1204 * @name: name of firmware file
1205 * @device: device for which firmware is being loaded
1208 * @fw may be %NULL if firmware request fails.
1209 * @cont: function will be called asynchronously when the firmware
1215 * - sleep for as small periods as possible since it may
1216 * increase kernel boot time of built-in device drivers
1217 * requesting firmware in their ->probe() methods, if
1220 * - can't sleep at all if @gfp is GFP_ATOMIC.
1225 const char *name, struct device *device, gfp_t gfp, void *context, in request_firmware_nowait() argument
1226 void (*cont)(const struct firmware *fw, void *context)) in request_firmware_nowait()
1232 return -ENOMEM; in request_firmware_nowait()
1234 fw_work->module = module; in request_firmware_nowait()
1235 fw_work->name = kstrdup_const(name, gfp); in request_firmware_nowait()
1236 if (!fw_work->name) { in request_firmware_nowait()
1238 return -ENOMEM; in request_firmware_nowait()
1240 fw_work->device = device; in request_firmware_nowait()
1241 fw_work->context = context; in request_firmware_nowait()
1242 fw_work->cont = cont; in request_firmware_nowait()
1243 fw_work->opt_flags = FW_OPT_NOWAIT | in request_firmware_nowait()
1246 if (!uevent && fw_cache_is_setup(device, name)) { in request_firmware_nowait()
1247 kfree_const(fw_work->name); in request_firmware_nowait()
1249 return -EOPNOTSUPP; in request_firmware_nowait()
1253 kfree_const(fw_work->name); in request_firmware_nowait()
1255 return -EFAULT; in request_firmware_nowait()
1258 get_device(fw_work->device); in request_firmware_nowait()
1259 INIT_WORK(&fw_work->work, request_firmware_work_func); in request_firmware_nowait()
1260 schedule_work(&fw_work->work); in request_firmware_nowait()
1269 * cache_firmware() - cache one firmware image in kernel memory space
1270 * @fw_name: the firmware image name
1272 * Cache firmware in kernel memory so that drivers can use it when
1273 * system isn't ready for them to request firmware image from userspace.
1275 * nowait version to get the cached firmware without any interacting
1278 * Return 0 if the firmware image has been cached successfully
1285 const struct firmware *fw; in cache_firmware()
1303 spin_lock(&fwc->lock); in lookup_fw_priv()
1305 spin_unlock(&fwc->lock); in lookup_fw_priv()
1311 * uncache_firmware() - remove one cached firmware image
1312 * @fw_name: the firmware image name
1314 * Uncache one firmware image which has been cached successfully
1317 * Return 0 if the firmware cache has been removed successfully
1324 struct firmware fw; in uncache_firmware()
1337 return -EINVAL; in uncache_firmware()
1340 static struct fw_cache_entry *alloc_fw_cache_entry(const char *name) in alloc_fw_cache_entry() argument
1348 fce->name = kstrdup_const(name, GFP_ATOMIC); in alloc_fw_cache_entry()
1349 if (!fce->name) { in alloc_fw_cache_entry()
1358 static int __fw_entry_found(const char *name) in __fw_entry_found() argument
1363 list_for_each_entry(fce, &fwc->fw_names, list) { in __fw_entry_found()
1364 if (!strcmp(fce->name, name)) in __fw_entry_found()
1372 const char *name = fw_priv->fw_name; in fw_cache_piggyback_on_request() local
1373 struct firmware_cache *fwc = fw_priv->fwc; in fw_cache_piggyback_on_request()
1376 spin_lock(&fwc->name_lock); in fw_cache_piggyback_on_request()
1377 if (__fw_entry_found(name)) in fw_cache_piggyback_on_request()
1380 fce = alloc_fw_cache_entry(name); in fw_cache_piggyback_on_request()
1382 list_add(&fce->list, &fwc->fw_names); in fw_cache_piggyback_on_request()
1383 kref_get(&fw_priv->ref); in fw_cache_piggyback_on_request()
1384 pr_debug("%s: fw: %s\n", __func__, name); in fw_cache_piggyback_on_request()
1387 spin_unlock(&fwc->name_lock); in fw_cache_piggyback_on_request()
1392 kfree_const(fce->name); in free_fw_cache_entry()
1403 ret = cache_firmware(fce->name); in __async_dev_cache_fw_image()
1405 spin_lock(&fwc->name_lock); in __async_dev_cache_fw_image()
1406 list_del(&fce->list); in __async_dev_cache_fw_image()
1407 spin_unlock(&fwc->name_lock); in __async_dev_cache_fw_image()
1413 /* called with dev->devres_lock held */
1418 const char *fw_name = fwn->name; in dev_create_fw_entry()
1424 list_add(&fce->list, head); in dev_create_fw_entry()
1431 return (fwn->magic == (unsigned long)match_data); in devm_name_match()
1446 list_del(&fce->list); in dev_cache_fw_image()
1448 spin_lock(&fwc->name_lock); in dev_cache_fw_image()
1449 /* only one cache entry for one firmware */ in dev_cache_fw_image()
1450 if (!__fw_entry_found(fce->name)) { in dev_cache_fw_image()
1451 list_add(&fce->list, &fwc->fw_names); in dev_cache_fw_image()
1456 spin_unlock(&fwc->name_lock); in dev_cache_fw_image()
1470 spin_lock(&fwc->name_lock); in __device_uncache_fw_images()
1471 while (!list_empty(&fwc->fw_names)) { in __device_uncache_fw_images()
1472 fce = list_entry(fwc->fw_names.next, in __device_uncache_fw_images()
1474 list_del(&fce->list); in __device_uncache_fw_images()
1475 spin_unlock(&fwc->name_lock); in __device_uncache_fw_images()
1477 uncache_firmware(fce->name); in __device_uncache_fw_images()
1480 spin_lock(&fwc->name_lock); in __device_uncache_fw_images()
1482 spin_unlock(&fwc->name_lock); in __device_uncache_fw_images()
1486 * device_cache_fw_images() - cache devices' firmware
1489 * successfully before, the firmware names are recored into the
1493 * time when system is not ready to complete loading firmware.
1503 cancel_delayed_work_sync(&fwc->work); in device_cache_fw_images()
1508 fwc->state = FW_LOADER_START_CACHE; in device_cache_fw_images()
1512 /* wait for completion of caching firmware for all devices */ in device_cache_fw_images()
1519 * device_uncache_fw_images() - uncache devices' firmware
1536 * device_uncache_fw_images_delay() - uncache devices firmwares
1581 /* stop caching firmware once syscore_suspend is reached */