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122 lines
3.3 KiB
122 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __FIRMWARE_SYSFS_H |
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#define __FIRMWARE_SYSFS_H |
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#include <linux/device.h> |
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#include "firmware.h" |
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MODULE_IMPORT_NS(FIRMWARE_LOADER_PRIVATE); |
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extern struct firmware_fallback_config fw_fallback_config; |
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extern struct device_attribute dev_attr_loading; |
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#ifdef CONFIG_FW_LOADER_USER_HELPER |
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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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/* These getters are vetted to use int properly */ |
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static inline int __firmware_loading_timeout(void) |
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{ |
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return fw_fallback_config.loading_timeout; |
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} |
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/* These setters are vetted to use int properly */ |
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static inline void __fw_fallback_set_timeout(int timeout) |
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{ |
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fw_fallback_config.loading_timeout = timeout; |
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} |
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#endif |
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#ifdef CONFIG_FW_LOADER_SYSFS |
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int register_sysfs_loader(void); |
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void unregister_sysfs_loader(void); |
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#if defined(CONFIG_FW_LOADER_USER_HELPER) && defined(CONFIG_SYSCTL) |
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int register_firmware_config_sysctl(void); |
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void unregister_firmware_config_sysctl(void); |
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#else |
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static inline int register_firmware_config_sysctl(void) |
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{ |
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return 0; |
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} |
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static inline void unregister_firmware_config_sysctl(void) { } |
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#endif /* CONFIG_FW_LOADER_USER_HELPER && CONFIG_SYSCTL */ |
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#else /* CONFIG_FW_LOADER_SYSFS */ |
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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_SYSFS */ |
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struct fw_sysfs { |
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bool nowait; |
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struct device dev; |
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struct fw_priv *fw_priv; |
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struct firmware *fw; |
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void *fw_upload_priv; |
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}; |
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static inline struct fw_sysfs *to_fw_sysfs(struct device *dev) |
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{ |
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return container_of(dev, struct fw_sysfs, dev); |
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} |
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void __fw_load_abort(struct fw_priv *fw_priv); |
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static inline void fw_load_abort(struct fw_sysfs *fw_sysfs) |
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{ |
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struct fw_priv *fw_priv = fw_sysfs->fw_priv; |
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__fw_load_abort(fw_priv); |
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} |
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struct fw_sysfs * |
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fw_create_instance(struct firmware *firmware, const char *fw_name, |
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struct device *device, u32 opt_flags); |
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#ifdef CONFIG_FW_UPLOAD |
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extern struct device_attribute dev_attr_status; |
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extern struct device_attribute dev_attr_error; |
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extern struct device_attribute dev_attr_cancel; |
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extern struct device_attribute dev_attr_remaining_size; |
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int fw_upload_start(struct fw_sysfs *fw_sysfs); |
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void fw_upload_free(struct fw_sysfs *fw_sysfs); |
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umode_t fw_upload_is_visible(struct kobject *kobj, struct attribute *attr, int n); |
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#else |
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static inline int fw_upload_start(struct fw_sysfs *fw_sysfs) |
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{ |
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return 0; |
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} |
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static inline void fw_upload_free(struct fw_sysfs *fw_sysfs) |
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{ |
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} |
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#endif |
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#endif /* __FIRMWARE_SYSFS_H */
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