| 1 | #ifndef _LINUX_FIRMWARE_H |
| 2 | #define _LINUX_FIRMWARE_H |
| 3 | |
| 4 | #include <linux/types.h> |
| 5 | #include <linux/compiler.h> |
| 6 | #include <linux/gfp.h> |
| 7 | |
| 8 | #define FW_ACTION_NOHOTPLUG 0 |
| 9 | #define FW_ACTION_HOTPLUG 1 |
| 10 | |
| 11 | struct firmware { |
| 12 | size_t size; |
| 13 | const u8 *data; |
| 14 | struct page **pages; |
| 15 | |
| 16 | /* firmware loader private fields */ |
| 17 | void *priv; |
| 18 | }; |
| 19 | |
| 20 | struct module; |
| 21 | struct device; |
| 22 | |
| 23 | struct builtin_fw { |
| 24 | char *name; |
| 25 | void *data; |
| 26 | unsigned long size; |
| 27 | }; |
| 28 | |
| 29 | /* We have to play tricks here much like stringify() to get the |
| 30 | __COUNTER__ macro to be expanded as we want it */ |
| 31 | #define __fw_concat1(x, y) x##y |
| 32 | #define __fw_concat(x, y) __fw_concat1(x, y) |
| 33 | |
| 34 | #define DECLARE_BUILTIN_FIRMWARE(name, blob) \ |
| 35 | DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob)) |
| 36 | |
| 37 | #define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \ |
| 38 | static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \ |
| 39 | __used __section(.builtin_fw) = { name, blob, size } |
| 40 | |
| 41 | #if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE)) |
| 42 | int request_firmware(const struct firmware **fw, const char *name, |
| 43 | struct device *device); |
| 44 | int request_firmware_nowait( |
| 45 | struct module *module, bool uevent, |
| 46 | const char *name, struct device *device, gfp_t gfp, void *context, |
| 47 | void (*cont)(const struct firmware *fw, void *context)); |
| 48 | |
| 49 | void release_firmware(const struct firmware *fw); |
| 50 | int cache_firmware(const char *name); |
| 51 | int uncache_firmware(const char *name); |
| 52 | #else |
| 53 | static inline int request_firmware(const struct firmware **fw, |
| 54 | const char *name, |
| 55 | struct device *device) |
| 56 | { |
| 57 | return -EINVAL; |
| 58 | } |
| 59 | static inline int request_firmware_nowait( |
| 60 | struct module *module, bool uevent, |
| 61 | const char *name, struct device *device, gfp_t gfp, void *context, |
| 62 | void (*cont)(const struct firmware *fw, void *context)) |
| 63 | { |
| 64 | return -EINVAL; |
| 65 | } |
| 66 | |
| 67 | static inline void release_firmware(const struct firmware *fw) |
| 68 | { |
| 69 | } |
| 70 | |
| 71 | static inline int cache_firmware(const char *name) |
| 72 | { |
| 73 | return -ENOENT; |
| 74 | } |
| 75 | |
| 76 | static inline int uncache_firmware(const char *name) |
| 77 | { |
| 78 | return -EINVAL; |
| 79 | } |
| 80 | #endif |
| 81 | |
| 82 | #endif |