File-copy from v4.4.100

This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Please refer to that tree for all history prior to this point.

Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/drivers/net/wireless/b43/debugfs.h b/drivers/net/wireless/b43/debugfs.h
new file mode 100644
index 0000000..d053777
--- /dev/null
+++ b/drivers/net/wireless/b43/debugfs.h
@@ -0,0 +1,111 @@
+#ifndef B43_DEBUGFS_H_
+#define B43_DEBUGFS_H_
+
+struct b43_wldev;
+struct b43_txstatus;
+
+enum b43_dyndbg {		/* Dynamic debugging features */
+	B43_DBG_XMITPOWER,
+	B43_DBG_DMAOVERFLOW,
+	B43_DBG_DMAVERBOSE,
+	B43_DBG_PWORK_FAST,
+	B43_DBG_PWORK_STOP,
+	B43_DBG_LO,
+	B43_DBG_FIRMWARE,
+	B43_DBG_KEYS,
+	B43_DBG_VERBOSESTATS,
+	__B43_NR_DYNDBG,
+};
+
+#ifdef CONFIG_B43_DEBUG
+
+struct dentry;
+
+#define B43_NR_LOGGED_TXSTATUS	100
+
+struct b43_txstatus_log {
+	/* This structure is protected by wl->mutex */
+
+	struct b43_txstatus *log;
+	int end;
+};
+
+struct b43_dfs_file {
+	struct dentry *dentry;
+	char *buffer;
+	size_t data_len;
+};
+
+struct b43_dfsentry {
+	struct b43_wldev *dev;
+	struct dentry *subdir;
+
+	struct b43_dfs_file file_shm16read;
+	struct b43_dfs_file file_shm16write;
+	struct b43_dfs_file file_shm32read;
+	struct b43_dfs_file file_shm32write;
+	struct b43_dfs_file file_mmio16read;
+	struct b43_dfs_file file_mmio16write;
+	struct b43_dfs_file file_mmio32read;
+	struct b43_dfs_file file_mmio32write;
+	struct b43_dfs_file file_txstat;
+	struct b43_dfs_file file_txpower_g;
+	struct b43_dfs_file file_restart;
+	struct b43_dfs_file file_loctls;
+
+	struct b43_txstatus_log txstatlog;
+
+	/* The cached address for the next mmio16read file read */
+	u16 mmio16read_next;
+	/* The cached address for the next mmio32read file read */
+	u16 mmio32read_next;
+
+	/* The cached address for the next shm16read file read */
+	u32 shm16read_routing_next;
+	u32 shm16read_addr_next;
+	/* The cached address for the next shm32read file read */
+	u32 shm32read_routing_next;
+	u32 shm32read_addr_next;
+
+	/* Enabled/Disabled list for the dynamic debugging features. */
+	bool dyn_debug[__B43_NR_DYNDBG];
+	/* Dentries for the dynamic debugging entries. */
+	struct dentry *dyn_debug_dentries[__B43_NR_DYNDBG];
+};
+
+bool b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature);
+
+void b43_debugfs_init(void);
+void b43_debugfs_exit(void);
+void b43_debugfs_add_device(struct b43_wldev *dev);
+void b43_debugfs_remove_device(struct b43_wldev *dev);
+void b43_debugfs_log_txstat(struct b43_wldev *dev,
+			    const struct b43_txstatus *status);
+
+#else /* CONFIG_B43_DEBUG */
+
+static inline bool b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature)
+{
+	return false;
+}
+
+static inline void b43_debugfs_init(void)
+{
+}
+static inline void b43_debugfs_exit(void)
+{
+}
+static inline void b43_debugfs_add_device(struct b43_wldev *dev)
+{
+}
+static inline void b43_debugfs_remove_device(struct b43_wldev *dev)
+{
+}
+static inline void b43_debugfs_log_txstat(struct b43_wldev *dev,
+					  const struct b43_txstatus *status)
+{
+}
+
+#endif /* CONFIG_B43_DEBUG */
+
+#endif /* B43_DEBUGFS_H_ */