1 files changed, 135 insertions, 0 deletions
diff --git a/include/linux/enclosure.h b/include/linux/enclosure.h
new file mode 100644
index 000000000..1c630e2c2
--- /dev/null
+++ b/include/linux/enclosure.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Enclosure Services
+ *
+ * Copyright (C) 2008 James Bottomley <James.Bottomley@HansenPartnership.com>
+ *
+**-----------------------------------------------------------------------------
+**
+**
+**-----------------------------------------------------------------------------
+*/
+#ifndef _LINUX_ENCLOSURE_H_
+#define _LINUX_ENCLOSURE_H_
+
+#include <linux/device.h>
+#include <linux/list.h>
+
+/* A few generic types ... taken from ses-2 */
+enum enclosure_component_type {
+	ENCLOSURE_COMPONENT_DEVICE = 0x01,
+	ENCLOSURE_COMPONENT_CONTROLLER_ELECTRONICS = 0x07,
+	ENCLOSURE_COMPONENT_SCSI_TARGET_PORT = 0x14,
+	ENCLOSURE_COMPONENT_SCSI_INITIATOR_PORT = 0x15,
+	ENCLOSURE_COMPONENT_ARRAY_DEVICE = 0x17,
+	ENCLOSURE_COMPONENT_SAS_EXPANDER = 0x18,
+};
+
+/* ses-2 common element status */
+enum enclosure_status {
+	ENCLOSURE_STATUS_UNSUPPORTED = 0,
+	ENCLOSURE_STATUS_OK,
+	ENCLOSURE_STATUS_CRITICAL,
+	ENCLOSURE_STATUS_NON_CRITICAL,
+	ENCLOSURE_STATUS_UNRECOVERABLE,
+	ENCLOSURE_STATUS_NOT_INSTALLED,
+	ENCLOSURE_STATUS_UNKNOWN,
+	ENCLOSURE_STATUS_UNAVAILABLE,
+	/* last element for counting purposes */
+	ENCLOSURE_STATUS_MAX
+};
+
+/* SFF-8485 activity light settings */
+enum enclosure_component_setting {
+	ENCLOSURE_SETTING_DISABLED = 0,
+	ENCLOSURE_SETTING_ENABLED = 1,
+	ENCLOSURE_SETTING_BLINK_A_ON_OFF = 2,
+	ENCLOSURE_SETTING_BLINK_A_OFF_ON = 3,
+	ENCLOSURE_SETTING_BLINK_B_ON_OFF = 6,
+	ENCLOSURE_SETTING_BLINK_B_OFF_ON = 7,
+};
+
+struct enclosure_device;
+struct enclosure_component;
+struct enclosure_component_callbacks {
+	void (*get_status)(struct enclosure_device *,
+			     struct enclosure_component *);
+	int (*set_status)(struct enclosure_device *,
+			  struct enclosure_component *,
+			  enum enclosure_status);
+	void (*get_fault)(struct enclosure_device *,
+			  struct enclosure_component *);
+	int (*set_fault)(struct enclosure_device *,
+			 struct enclosure_component *,
+			 enum enclosure_component_setting);
+	void (*get_active)(struct enclosure_device *,
+			   struct enclosure_component *);
+	int (*set_active)(struct enclosure_device *,
+			  struct enclosure_component *,
+			  enum enclosure_component_setting);
+	void (*get_locate)(struct enclosure_device *,
+			   struct enclosure_component *);
+	int (*set_locate)(struct enclosure_device *,
+			  struct enclosure_component *,
+			  enum enclosure_component_setting);
+	void (*get_power_status)(struct enclosure_device *,
+				 struct enclosure_component *);
+	int (*set_power_status)(struct enclosure_device *,
+				struct enclosure_component *,
+				int);
+	int (*show_id)(struct enclosure_device *, char *buf);
+};
+
+
+struct enclosure_component {
+	void *scratch;
+	struct device cdev;
+	struct device *dev;
+	enum enclosure_component_type type;
+	int number;
+	int fault;
+	int active;
+	int locate;
+	int slot;
+	enum enclosure_status status;
+	int power_status;
+};
+
+struct enclosure_device {
+	void *scratch;
+	struct list_head node;
+	struct device edev;
+	struct enclosure_component_callbacks *cb;
+	int components;
+	struct enclosure_component component[];
+};
+
+static inline struct enclosure_device *
+to_enclosure_device(struct device *dev)
+{
+	return container_of(dev, struct enclosure_device, edev);
+}
+
+static inline struct enclosure_component *
+to_enclosure_component(struct device *dev)
+{
+	return container_of(dev, struct enclosure_component, cdev);
+}
+
+struct enclosure_device *
+enclosure_register(struct device *, const char *, int,
+		   struct enclosure_component_callbacks *);
+void enclosure_unregister(struct enclosure_device *);
+struct enclosure_component *
+enclosure_component_alloc(struct enclosure_device *, unsigned int,
+			  enum enclosure_component_type, const char *);
+int enclosure_component_register(struct enclosure_component *);
+int enclosure_add_device(struct enclosure_device *enclosure, int component,
+			 struct device *dev);
+int enclosure_remove_device(struct enclosure_device *, struct device *);
+struct enclosure_device *enclosure_find(struct device *dev,
+					struct enclosure_device *start);
+int enclosure_for_each_device(int (*fn)(struct enclosure_device *, void *),
+			      void *data);
+
+#endif /* _LINUX_ENCLOSURE_H_ */