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
}
#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)
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);
#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)