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TOMOYO Linux Cross Reference
Linux/include/linux/firmware.h

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  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 int request_firmware_direct(const struct firmware **fw, const char *name,
 49                             struct device *device);
 50 
 51 void release_firmware(const struct firmware *fw);
 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 request_firmware_direct(const struct firmware **fw,
 72                                           const char *name,
 73                                           struct device *device)
 74 {
 75         return -EINVAL;
 76 }
 77 
 78 #endif
 79 #endif
 80 

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