diff options
| -rw-r--r-- | drivers/base/firmware_class.c | 190 |
1 files changed, 95 insertions, 95 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 3a79231c2cf5..4041548d1a81 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -41,6 +41,101 @@ MODULE_AUTHOR("Manuel Estrada Sainz"); MODULE_DESCRIPTION("Multi purpose firmware loading support"); MODULE_LICENSE("GPL"); +enum fw_status { + FW_STATUS_UNKNOWN, + FW_STATUS_LOADING, + FW_STATUS_DONE, + FW_STATUS_ABORTED, +}; + +/* + * Concurrent request_firmware() for the same firmware need to be + * serialized. struct fw_state is simple state machine which hold the + * state of the firmware loading. + */ +struct fw_state { + struct completion completion; + enum fw_status status; +}; + +/* firmware behavior options */ +#define FW_OPT_UEVENT (1U << 0) +#define FW_OPT_NOWAIT (1U << 1) +#ifdef CONFIG_FW_LOADER_USER_HELPER +#define FW_OPT_USERHELPER (1U << 2) +#else +#define FW_OPT_USERHELPER 0 +#endif +#ifdef CONFIG_FW_LOADER_USER_HELPER_FALLBACK +#define FW_OPT_FALLBACK FW_OPT_USERHELPER +#else +#define FW_OPT_FALLBACK 0 +#endif +#define FW_OPT_NO_WARN (1U << 3) +#define FW_OPT_NOCACHE (1U << 4) + +struct firmware_cache { + /* firmware_buf instance will be added into the below list */ + spinlock_t lock; + struct list_head head; + int state; + +#ifdef CONFIG_PM_SLEEP + /* + * Names of firmware images which have been cached successfully + * will be added into the below list so that device uncache + * helper can trace which firmware images have been cached + * before. + */ + spinlock_t name_lock; + struct list_head fw_names; + + struct delayed_work work; + + struct notifier_block pm_notify; +#endif +}; + +struct fw_priv { + struct kref ref; + struct list_head list; + struct firmware_cache *fwc; + struct fw_state fw_st; + void *data; + size_t size; + size_t allocated_size; +#ifdef CONFIG_FW_LOADER_USER_HELPER + bool is_paged_buf; + bool need_uevent; + struct page **pages; + int nr_pages; + int page_array_size; + struct list_head pending_list; +#endif + const char *fw_name; +}; + +struct fw_cache_entry { + struct list_head list; + const char *name; +}; + +struct fw_name_devm { + unsigned long magic; + const char *name; +}; + +#define to_fw_priv(d) container_of(d, struct fw_priv, ref) + +#define FW_LOADER_NO_CACHE 0 +#define FW_LOADER_START_CACHE 1 + +/* fw_lock could be moved to 'struct fw_sysfs' but since it is just + * guarding for corner cases a global lock should be OK */ +static DEFINE_MUTEX(fw_lock); + +static struct firmware_cache fw_cache; + /* Builtin firmware support */ #ifdef CONFIG_FW_LOADER @@ -93,13 +188,6 @@ static inline bool fw_is_builtin_firmware(const struct firmware *fw) } #endif -enum fw_status { - FW_STATUS_UNKNOWN, - FW_STATUS_LOADING, - FW_STATUS_DONE, - FW_STATUS_ABORTED, -}; - static int loading_timeout = 60; /* In seconds */ static inline long firmware_loading_timeout(void) @@ -107,16 +195,6 @@ static inline long firmware_loading_timeout(void) return loading_timeout > 0 ? loading_timeout * HZ : MAX_JIFFY_OFFSET; } -/* - * Concurrent request_firmware() for the same firmware need to be - * serialized. struct fw_state is simple state machine which hold the - * state of the firmware loading. - */ -struct fw_state { - struct completion completion; - enum fw_status status; -}; - static void fw_state_init(struct fw_state *fw_st) { init_completion(&fw_st->completion); @@ -180,86 +258,8 @@ static int __fw_state_check(struct fw_state *fw_st, enum fw_status status) #endif /* CONFIG_FW_LOADER_USER_HELPER */ -/* firmware behavior options */ -#define FW_OPT_UEVENT (1U << 0) -#define FW_OPT_NOWAIT (1U << 1) -#ifdef CONFIG_FW_LOADER_USER_HELPER -#define FW_OPT_USERHELPER (1U << 2) -#else -#define FW_OPT_USERHELPER 0 -#endif -#ifdef CONFIG_FW_LOADER_USER_HELPER_FALLBACK -#define FW_OPT_FALLBACK FW_OPT_USERHELPER -#else -#define FW_OPT_FALLBACK 0 -#endif -#define FW_OPT_NO_WARN (1U << 3) -#define FW_OPT_NOCACHE (1U << 4) - -struct firmware_cache { - /* firmware_buf instance will be added into the below list */ - spinlock_t lock; - struct list_head head; - int state; - -#ifdef CONFIG_PM_SLEEP - /* - * Names of firmware images which have been cached successfully - * will be added into the below list so that device uncache - * helper can trace which firmware images have been cached - * before. - */ - spinlock_t name_lock; - struct list_head fw_names; - - struct delayed_work work; - - struct notifier_block pm_notify; -#endif -}; - -struct fw_priv { - struct kref ref; - struct list_head list; - struct firmware_cache *fwc; - struct fw_state fw_st; - void *data; - size_t size; - size_t allocated_size; -#ifdef CONFIG_FW_LOADER_USER_HELPER - bool is_paged_buf; - bool need_uevent; - struct page **pages; - int nr_pages; - int page_array_size; - struct list_head pending_list; -#endif - const char *fw_name; -}; - -struct fw_cache_entry { - struct list_head list; - const char *name; -}; - -struct fw_name_devm { - unsigned long magic; - const char *name; -}; - -#define to_fw_priv(d) container_of(d, struct fw_priv, ref) - -#define FW_LOADER_NO_CACHE 0 -#define FW_LOADER_START_CACHE 1 - static int fw_cache_piggyback_on_request(const char *name); -/* fw_lock could be moved to 'struct fw_sysfs' but since it is just - * guarding for corner cases a global lock should be OK */ -static DEFINE_MUTEX(fw_lock); - -static struct firmware_cache fw_cache; - static struct fw_priv *__allocate_fw_priv(const char *fw_name, struct firmware_cache *fwc, void *dbuf, size_t size) |