/*********************************************
 * Benjamin Krill <ben@codiert.org>
 *********************************************/
#ifndef FPGAFS_H
#define FPGAFS_H

#include <linux/kref.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/fs.h>

/* magic number the file system */
enum {
  FPGAFS_MAGIC = 0x4255AA42,
};

struct fpga_context {
	char *load_buf;
	int bla;
};

struct fpgafs_inode_info {
	struct fpga_context *i_ctx;
	struct inode vfs_inode;
};

extern struct tree_descr fpgafs_dir_contents[];

#define FPGAFS_I(inode) \
		container_of(inode, struct fpgafs_inode_info, vfs_inode)


/* command definitions */
#define BLA 0

/* low level driver */
struct fpgafs_lldrv {
	char name[5];

	int (*init) (void);
	int (*exit) (void);

	int (*send) (struct fpga_context *ctx, const char __user *buf, int len);
	int (*recv) (struct fpga_context *ctx, unsigned char *buf, int len);

	int (*read_load) (struct fpga_context *ctx, unsigned  char *buf, int len);
	int (*write_load) (struct fpga_context *ctx, const char __user *buf, int len);
};

int fpgafs_register_lldrv(struct fpgafs_lldrv *drv);
int fpgafs_unregister_lldrv(struct fpgafs_lldrv *drv);

ssize_t fpgafs_send_data(struct file *file, const char __user *buf,
                                size_t len, loff_t *pos);
ssize_t fpgafs_recv_data(struct file *file, char __user *buf,
                                size_t len, loff_t *pos);

ssize_t fpgafs_write_load(struct file *file, const char __user *buf,
                                size_t len, loff_t *pos);
ssize_t fpgafs_read_load(struct file *file, char __user *buf,
                                size_t len, loff_t *pos);

struct fpga_context* alloc_fpga_context(void);
void free_fpga_context(struct fpga_context *ctx);
#endif /* FPGAFS_H */