projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d73f821c LR |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __FIRMWARE_FALLBACK_H | |
| 3 | #define __FIRMWARE_FALLBACK_H | |
| 4 | ||
| 5 | #include <linux/firmware.h> | |
| 6 | #include <linux/device.h> | |
| 7 | ||
| eb33eb04 AR |
8 | #include "firmware.h" |
| 9 | ||
| d73f821c | 10 | /** |
| b93815d0 | 11 | * struct firmware_fallback_config - firmware fallback configuration settings |
| d73f821c LR |
12 | * |
| 13 | * Helps describe and fine tune the fallback mechanism. | |
| 14 | * | |
| 15 | * @force_sysfs_fallback: force the sysfs fallback mechanism to be used | |
| 16 | * as if one had enabled CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y. | |
| ceb18132 LR |
17 | * Useful to help debug a CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y |
| 18 | * functionality on a kernel where that config entry has been disabled. | |
| 2cd7a1c6 LR |
19 | * @ignore_sysfs_fallback: force to disable the sysfs fallback mechanism. |
| 20 | * This emulates the behaviour as if we had set the kernel | |
| 21 | * config CONFIG_FW_LOADER_USER_HELPER=n. | |
| d73f821c LR |
22 | * @old_timeout: for internal use |
| 23 | * @loading_timeout: the timeout to wait for the fallback mechanism before | |
| 24 | * giving up, in seconds. | |
| 25 | */ | |
| 26 | struct firmware_fallback_config { | |
| ceb18132 | 27 | unsigned int force_sysfs_fallback; |
| 2cd7a1c6 | 28 | unsigned int ignore_sysfs_fallback; |
| d73f821c LR |
29 | int old_timeout; |
| 30 | int loading_timeout; | |
| 31 | }; | |
| 32 | ||
| 33 | #ifdef CONFIG_FW_LOADER_USER_HELPER | |
| cf1cde7c AR |
34 | int firmware_fallback_sysfs(struct firmware *fw, const char *name, |
| 35 | struct device *device, | |
| 36 | enum fw_opt opt_flags, | |
| 37 | int ret); | |
| d73f821c LR |
38 | void kill_pending_fw_fallback_reqs(bool only_kill_custom); |
| 39 | ||
| 40 | void fw_fallback_set_cache_timeout(void); | |
| 41 | void fw_fallback_set_default_timeout(void); | |
| 42 | ||
| 43 | int register_sysfs_loader(void); | |
| 44 | void unregister_sysfs_loader(void); | |
| 45 | #else /* CONFIG_FW_LOADER_USER_HELPER */ | |
| cf1cde7c AR |
46 | static inline int firmware_fallback_sysfs(struct firmware *fw, const char *name, |
| 47 | struct device *device, | |
| 48 | enum fw_opt opt_flags, | |
| 49 | int ret) | |
| d73f821c LR |
50 | { |
| 51 | /* Keep carrying over the same error */ | |
| 52 | return ret; | |
| 53 | } | |
| 54 | ||
| 55 | static inline void kill_pending_fw_fallback_reqs(bool only_kill_custom) { } | |
| 56 | static inline void fw_fallback_set_cache_timeout(void) { } | |
| 57 | static inline void fw_fallback_set_default_timeout(void) { } | |
| 58 | ||
| 59 | static inline int register_sysfs_loader(void) | |
| 60 | { | |
| 61 | return 0; | |
| 62 | } | |
| 63 | ||
| 64 | static inline void unregister_sysfs_loader(void) | |
| 65 | { | |
| 66 | } | |
| 67 | #endif /* CONFIG_FW_LOADER_USER_HELPER */ | |
| 68 | ||
| e4c2c0ff HG |
69 | #ifdef CONFIG_EFI_EMBEDDED_FIRMWARE |
| 70 | int firmware_fallback_platform(struct fw_priv *fw_priv, enum fw_opt opt_flags); | |
| 71 | #else | |
| 72 | static inline int firmware_fallback_platform(struct fw_priv *fw_priv, | |
| 73 | enum fw_opt opt_flags) | |
| 74 | { | |
| 75 | return -ENOENT; | |
| 76 | } | |
| 77 | #endif | |
| 78 | ||
| d73f821c | 79 | #endif /* __FIRMWARE_FALLBACK_H */ |