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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __FIRMWARE_SYSFS_H
#define __FIRMWARE_SYSFS_H
#include <linux/device.h>
#include "firmware.h"
MODULE_IMPORT_NS(FIRMWARE_LOADER_PRIVATE);
extern struct firmware_fallback_config fw_fallback_config;
extern struct device_attribute dev_attr_loading;
#ifdef CONFIG_FW_LOADER_USER_HELPER
/**
* struct firmware_fallback_config - firmware fallback configuration settings
*
* Helps describe and fine tune the fallback mechanism.
*
* @force_sysfs_fallback: force the sysfs fallback mechanism to be used
* as if one had enabled CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y.
* Useful to help debug a CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
* functionality on a kernel where that config entry has been disabled.
* @ignore_sysfs_fallback: force to disable the sysfs fallback mechanism.
* This emulates the behaviour as if we had set the kernel
* config CONFIG_FW_LOADER_USER_HELPER=n.
* @old_timeout: for internal use
* @loading_timeout: the timeout to wait for the fallback mechanism before
* giving up, in seconds.
*/
struct firmware_fallback_config {
unsigned int force_sysfs_fallback;
unsigned int ignore_sysfs_fallback;
int old_timeout;
int loading_timeout;
};
/* These getters are vetted to use int properly */
static inline int __firmware_loading_timeout(void)
{
return fw_fallback_config.loading_timeout;
}
/* These setters are vetted to use int properly */
static inline void __fw_fallback_set_timeout(int timeout)
{
fw_fallback_config.loading_timeout = timeout;
}
int register_sysfs_loader(void);
void unregister_sysfs_loader(void);
#ifdef CONFIG_SYSCTL
int register_firmware_config_sysctl(void);
void unregister_firmware_config_sysctl(void);
#else
static inline int register_firmware_config_sysctl(void)
{
return 0;
}
static inline void unregister_firmware_config_sysctl(void) { }
#endif /* CONFIG_SYSCTL */
#else /* CONFIG_FW_LOADER_USER_HELPER */
static inline int register_sysfs_loader(void)
{
return 0;
}
static inline void unregister_sysfs_loader(void)
{
}
#endif /* CONFIG_FW_LOADER_USER_HELPER */
struct fw_sysfs {
bool nowait;
struct device dev;
struct fw_priv *fw_priv;
struct firmware *fw;
void *fw_upload_priv;
};
static inline struct fw_sysfs *to_fw_sysfs(struct device *dev)
{
return container_of(dev, struct fw_sysfs, dev);
}
void __fw_load_abort(struct fw_priv *fw_priv);
static inline void fw_load_abort(struct fw_sysfs *fw_sysfs)
{
struct fw_priv *fw_priv = fw_sysfs->fw_priv;
__fw_load_abort(fw_priv);
}
struct fw_sysfs *
fw_create_instance(struct firmware *firmware, const char *fw_name,
struct device *device, u32 opt_flags);
#endif /* __FIRMWARE_SYSFS_H */
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