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Filename : fpga-region.h
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/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _FPGA_REGION_H
#define _FPGA_REGION_H

#include <linux/device.h>
#include <linux/fpga/fpga-mgr.h>
#include <linux/fpga/fpga-bridge.h>

struct fpga_region;

/**
 * struct fpga_region_info - collection of parameters an FPGA Region
 * @mgr: fpga region manager
 * @compat_id: FPGA region id for compatibility check.
 * @priv: fpga region private data
 * @get_bridges: optional function to get bridges to a list
 *
 * fpga_region_info contains parameters for the register_full function.
 * These are separated into an info structure because they some are optional
 * others could be added to in the future. The info structure facilitates
 * maintaining a stable API.
 */
struct fpga_region_info {
	struct fpga_manager *mgr;
	struct fpga_compat_id *compat_id;
	void *priv;
	int (*get_bridges)(struct fpga_region *region);
};

/**
 * struct fpga_region - FPGA Region structure
 * @dev: FPGA Region device
 * @mutex: enforces exclusive reference to region
 * @bridge_list: list of FPGA bridges specified in region
 * @mgr: FPGA manager
 * @info: FPGA image info
 * @compat_id: FPGA region id for compatibility check.
 * @ops_owner: module containing the get_bridges function
 * @priv: private data
 * @get_bridges: optional function to get bridges to a list
 */
struct fpga_region {
	struct device dev;
	struct mutex mutex; /* for exclusive reference to region */
	struct list_head bridge_list;
	struct fpga_manager *mgr;
	struct fpga_image_info *info;
	struct fpga_compat_id *compat_id;
	struct module *ops_owner;
	void *priv;
	int (*get_bridges)(struct fpga_region *region);
};

#define to_fpga_region(d) container_of(d, struct fpga_region, dev)

struct fpga_region *
fpga_region_class_find(struct device *start, const void *data,
		       int (*match)(struct device *, const void *));

int fpga_region_program_fpga(struct fpga_region *region);

#define fpga_region_register_full(parent, info) \
	__fpga_region_register_full(parent, info, THIS_MODULE)
struct fpga_region *
__fpga_region_register_full(struct device *parent, const struct fpga_region_info *info,
			    struct module *owner);

#define fpga_region_register(parent, mgr, get_bridges) \
	__fpga_region_register(parent, mgr, get_bridges, THIS_MODULE)
struct fpga_region *
__fpga_region_register(struct device *parent, struct fpga_manager *mgr,
		       int (*get_bridges)(struct fpga_region *), struct module *owner);
void fpga_region_unregister(struct fpga_region *region);

#endif /* _FPGA_REGION_H */