1 files changed, 138 insertions, 0 deletions
diff --git a/include/linux/mcb.h b/include/linux/mcb.h
new file mode 100644
index 000000000..91ec9a831
--- /dev/null
+++ b/include/linux/mcb.h
@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * MEN Chameleon Bus.
+ *
+ * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
+ * Author: Johannes Thumshirn <johannes.thumshirn@men.de>
+ */
+#ifndef _LINUX_MCB_H
+#define _LINUX_MCB_H
+
+#include <linux/mod_devicetable.h>
+#include <linux/device.h>
+#include <linux/irqreturn.h>
+
+#define CHAMELEON_FILENAME_LEN 12
+
+struct mcb_driver;
+struct mcb_device;
+
+/**
+ * struct mcb_bus - MEN Chameleon Bus
+ *
+ * @dev: bus device
+ * @carrier: pointer to carrier device
+ * @bus_nr: mcb bus number
+ * @get_irq: callback to get IRQ number
+ * @revision: the FPGA's revision number
+ * @model: the FPGA's model number
+ * @filename: the FPGA's name
+ */
+struct mcb_bus {
+	struct device dev;
+	struct device *carrier;
+	int bus_nr;
+	u8 revision;
+	char model;
+	u8 minor;
+	char name[CHAMELEON_FILENAME_LEN + 1];
+	int (*get_irq)(struct mcb_device *dev);
+};
+
+static inline struct mcb_bus *to_mcb_bus(struct device *dev)
+{
+	return container_of(dev, struct mcb_bus, dev);
+}
+
+/**
+ * struct mcb_device - MEN Chameleon Bus device
+ *
+ * @dev: device in kernel representation
+ * @bus: mcb bus the device is plugged to
+ * @is_added: flag to check if device is added to bus
+ * @driver: associated mcb_driver
+ * @id: mcb device id
+ * @inst: instance in Chameleon table
+ * @group: group in Chameleon table
+ * @var: variant in Chameleon table
+ * @bar: BAR in Chameleon table
+ * @rev: revision in Chameleon table
+ * @irq: IRQ resource
+ * @memory: memory resource
+ */
+struct mcb_device {
+	struct device dev;
+	struct mcb_bus *bus;
+	struct mcb_driver *driver;
+	u16 id;
+	int inst;
+	int group;
+	int var;
+	int bar;
+	int rev;
+	struct resource irq;
+	struct resource mem;
+	struct device *dma_dev;
+};
+
+static inline struct mcb_device *to_mcb_device(struct device *dev)
+{
+	return container_of(dev, struct mcb_device, dev);
+}
+
+/**
+ * struct mcb_driver - MEN Chameleon Bus device driver
+ *
+ * @driver: device_driver
+ * @id_table: mcb id table
+ * @probe: probe callback
+ * @remove: remove callback
+ * @shutdown: shutdown callback
+ */
+struct mcb_driver {
+	struct device_driver driver;
+	const struct mcb_device_id *id_table;
+	int (*probe)(struct mcb_device *mdev, const struct mcb_device_id *id);
+	void (*remove)(struct mcb_device *mdev);
+	void (*shutdown)(struct mcb_device *mdev);
+};
+
+static inline struct mcb_driver *to_mcb_driver(struct device_driver *drv)
+{
+	return container_of(drv, struct mcb_driver, driver);
+}
+
+static inline void *mcb_get_drvdata(struct mcb_device *dev)
+{
+	return dev_get_drvdata(&dev->dev);
+}
+
+static inline void mcb_set_drvdata(struct mcb_device *dev, void *data)
+{
+	dev_set_drvdata(&dev->dev, data);
+}
+
+extern int __must_check __mcb_register_driver(struct mcb_driver *drv,
+					struct module *owner,
+					const char *mod_name);
+#define mcb_register_driver(driver)		\
+	__mcb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
+extern void mcb_unregister_driver(struct mcb_driver *driver);
+#define module_mcb_driver(__mcb_driver)		\
+	module_driver(__mcb_driver, mcb_register_driver, mcb_unregister_driver)
+extern void mcb_bus_add_devices(const struct mcb_bus *bus);
+extern int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev);
+extern struct mcb_bus *mcb_alloc_bus(struct device *carrier);
+extern struct mcb_bus *mcb_bus_get(struct mcb_bus *bus);
+extern void mcb_bus_put(struct mcb_bus *bus);
+extern struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus);
+extern void mcb_free_dev(struct mcb_device *dev);
+extern void mcb_release_bus(struct mcb_bus *bus);
+extern struct resource *mcb_request_mem(struct mcb_device *dev,
+					const char *name);
+extern void mcb_release_mem(struct resource *mem);
+extern int mcb_get_irq(struct mcb_device *dev);
+extern struct resource *mcb_get_resource(struct mcb_device *dev,
+					 unsigned int type);
+
+#endif /* _LINUX_MCB_H */