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78 lines
2.2 KiB
78 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __FIRMWARE_FALLBACK_H |
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#define __FIRMWARE_FALLBACK_H |
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#include <linux/firmware.h> |
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#include <linux/device.h> |
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#include "firmware.h" |
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/** |
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* struct firmware_fallback_config - firmware fallback configuration settings |
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* |
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* Helps describe and fine tune the fallback mechanism. |
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* |
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* @force_sysfs_fallback: force the sysfs fallback mechanism to be used |
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* as if one had enabled CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y. |
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* Useful to help debug a CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y |
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* functionality on a kernel where that config entry has been disabled. |
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* @ignore_sysfs_fallback: force to disable the sysfs fallback mechanism. |
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* This emulates the behaviour as if we had set the kernel |
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* config CONFIG_FW_LOADER_USER_HELPER=n. |
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* @old_timeout: for internal use |
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* @loading_timeout: the timeout to wait for the fallback mechanism before |
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* giving up, in seconds. |
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*/ |
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struct firmware_fallback_config { |
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unsigned int force_sysfs_fallback; |
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unsigned int ignore_sysfs_fallback; |
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int old_timeout; |
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int loading_timeout; |
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}; |
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#ifdef CONFIG_FW_LOADER_USER_HELPER |
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int firmware_fallback_sysfs(struct firmware *fw, const char *name, |
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struct device *device, |
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u32 opt_flags, |
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int ret); |
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void kill_pending_fw_fallback_reqs(bool only_kill_custom); |
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void fw_fallback_set_cache_timeout(void); |
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void fw_fallback_set_default_timeout(void); |
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int register_sysfs_loader(void); |
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void unregister_sysfs_loader(void); |
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#else /* CONFIG_FW_LOADER_USER_HELPER */ |
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static inline int firmware_fallback_sysfs(struct firmware *fw, const char *name, |
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struct device *device, |
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u32 opt_flags, |
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int ret) |
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{ |
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/* Keep carrying over the same error */ |
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return ret; |
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} |
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static inline void kill_pending_fw_fallback_reqs(bool only_kill_custom) { } |
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static inline void fw_fallback_set_cache_timeout(void) { } |
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static inline void fw_fallback_set_default_timeout(void) { } |
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static inline int register_sysfs_loader(void) |
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{ |
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return 0; |
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} |
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static inline void unregister_sysfs_loader(void) |
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{ |
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} |
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#endif /* CONFIG_FW_LOADER_USER_HELPER */ |
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#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE |
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int firmware_fallback_platform(struct fw_priv *fw_priv); |
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#else |
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static inline int firmware_fallback_platform(struct fw_priv *fw_priv) |
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{ |
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return -ENOENT; |
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} |
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#endif |
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#endif /* __FIRMWARE_FALLBACK_H */
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