1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-debugfs.h b/drivers/scsi/ufs/ufs-debugfs.h
new file mode 100644
index 000000000000..13848e8b72e0
--- /dev/null
+++ b/drivers/scsi/ufs/ufs-debugfs.h
@@ -0,0 +1,69 @@
+/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * UFS debugfs - add debugfs interface to the ufshcd.
+ * This is currently used for statistics collection and exporting from the
+ * UFS driver.
+ * This infrastructure can be used for debugging or direct tweaking
+ * of the driver from userspace.
+ *
+ */
+
+#ifndef _UFS_DEBUGFS_H
+#define _UFS_DEBUGFS_H
+
+#include <linux/debugfs.h>
+#include "ufshcd.h"
+
+enum ufsdbg_err_inject_scenario {
+	ERR_INJECT_INTR,
+	ERR_INJECT_PWR_CHANGE,
+	ERR_INJECT_UIC,
+	ERR_INJECT_DME_ATTR,
+	ERR_INJECT_QUERY,
+	ERR_INJECT_MAX_ERR_SCENARIOS,
+};
+
+#ifdef CONFIG_DEBUG_FS
+void ufsdbg_add_debugfs(struct ufs_hba *hba);
+void ufsdbg_remove_debugfs(struct ufs_hba *hba);
+void ufsdbg_pr_buf_to_std(struct ufs_hba *hba, int offset, int num_regs,
+				char *str, void *priv);
+void ufsdbg_set_err_state(struct ufs_hba *hba);
+#else
+static inline void ufsdbg_add_debugfs(struct ufs_hba *hba)
+{
+}
+static inline void ufsdbg_remove_debugfs(struct ufs_hba *hba)
+{
+}
+static inline void ufsdbg_pr_buf_to_std(struct ufs_hba *hba, int offset,
+	int num_regs, char *str, void *priv)
+{
+}
+void ufsdbg_set_err_state(struct ufs_hba *hba)
+{
+}
+#endif
+
+#ifdef CONFIG_UFS_FAULT_INJECTION
+void ufsdbg_error_inject_dispatcher(struct ufs_hba *hba,
+			enum ufsdbg_err_inject_scenario err_scenario,
+			int success_value, int *ret_value);
+#else
+static inline void ufsdbg_error_inject_dispatcher(struct ufs_hba *hba,
+			enum ufsdbg_err_inject_scenario err_scenario,
+			int success_value, int *ret_value)
+{
+}
+#endif
+
+#endif /* End of Header */