119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
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/* 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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#define to_fw_sysfs(__dev) container_of_const(__dev, struct fw_sysfs, dev)
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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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