79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
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/* 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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