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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_FIRMWARE_H
#define _LINUX_FIRMWARE_H
#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/gfp.h>
#define FW_ACTION_NOUEVENT 0
#define FW_ACTION_UEVENT 1
struct firmware {
size_t size;
const u8 *data;
/* firmware loader private fields */
void *priv;
};
struct module;
struct device;
/*
* Built-in firmware functionality is only available if FW_LOADER=y, but not
* FW_LOADER=m
*/
#ifdef CONFIG_FW_LOADER
struct builtin_fw {
char *name;
void *data;
unsigned long size;
};
bool firmware_request_builtin(struct firmware *fw, const char *name);
/* We have to play tricks here much like stringify() to get the
__COUNTER__ macro to be expanded as we want it */
#define __fw_concat1(x, y) x##y
#define __fw_concat(x, y) __fw_concat1(x, y)
#define DECLARE_BUILTIN_FIRMWARE(name, blob) \
DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob))
#define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \
static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \
__used __section(".builtin_fw") = { name, blob, size }
#else
static inline bool firmware_request_builtin(struct firmware *fw,
const char *name)
{
return false;
}
#endif
#if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE))
int request_firmware(const struct firmware **fw, const char *name,
struct device *device);
int firmware_request_nowarn(const struct firmware **fw, const char *name,
struct device *device);
int firmware_request_platform(const struct firmware **fw, const char *name,
struct device *device);
int request_firmware_nowait(
struct module *module, bool uevent,
const char *name, struct device *device, gfp_t gfp, void *context,
void (*cont)(const struct firmware *fw, void *context));
int request_firmware_direct(const struct firmware **fw, const char *name,
struct device *device);
int request_firmware_into_buf(const struct firmware **firmware_p,
const char *name, struct device *device, void *buf, size_t size);
int request_partial_firmware_into_buf(const struct firmware **firmware_p,
const char *name, struct device *device,
void *buf, size_t size, size_t offset);
void release_firmware(const struct firmware *fw);
#else
static inline int request_firmware(const struct firmware **fw,
const char *name,
struct device *device)
{
return -EINVAL;
}
static inline int firmware_request_nowarn(const struct firmware **fw,
const char *name,
struct device *device)
{
return -EINVAL;
}
static inline int firmware_request_platform(const struct firmware **fw,
const char *name,
struct device *device)
{
return -EINVAL;
}
static inline int request_firmware_nowait(
struct module *module, bool uevent,
const char *name, struct device *device, gfp_t gfp, void *context,
void (*cont)(const struct firmware *fw, void *context))
{
return -EINVAL;
}
static inline void release_firmware(const struct firmware *fw)
{
}
static inline int request_firmware_direct(const struct firmware **fw,
const char *name,
struct device *device)
{
return -EINVAL;
}
static inline int request_firmware_into_buf(const struct firmware **firmware_p,
const char *name, struct device *device, void *buf, size_t size)
{
return -EINVAL;
}
static inline int request_partial_firmware_into_buf
(const struct firmware **firmware_p,
const char *name,
struct device *device,
void *buf, size_t size, size_t offset)
{
return -EINVAL;
}
#endif
int firmware_request_cache(struct device *device, const char *name);
#endif
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