#ifndef __LINUX_SIM_OBD_H
#define __LINUX_SIM_OBD_H

#include <linux/fs.h>
#include <linux/ext2_fs.h>

#include <linux/obd_sim.h>
/* #include <linux/obd_fc.h> */

#define OBD_PSDEV_MAJOR 120
#define MAX_OBD_DEVICES 2

extern struct obd_device obd_dev[MAX_OBD_DEVICES];

struct obd_conn_info {
	unsigned int conn_id;     /* handle */
	unsigned long conn_ino;   /* root inode number */
	/* XXX do we really need this */
	unsigned long conn_blocksize; 
	unsigned char conn_blocksize_bits;
};

struct obd_type {
	struct list_head typ_chain;
	struct obd_ops *typ_ops;
	char *typ_name;
	int  typ_refcnt;
};

/* corresponds to one of the obdx */
struct obd_device {
	struct obd_type *obd_type;
	int obd_refcnt; 
	union {
		struct sim_obd sim;
		/* struct fc_obd fc; */
	} u;
};

#define OBD_FL_SETUP 0x1

struct obd_ops {
	int (*o_format)(void);
	int (*o_partition)(int partition, unsigned int size);
	int (*o_connect)(int minor, struct obd_conn_info *info);
	int (*o_disconnect)(unsigned int conn_id);
	int (*o_setup) (struct obd_device *dev, void *data);
	int (*o_cleanup)(struct obd_device *dev);
	int (*o_setattr)(unsigned int conn_id, unsigned long id, struct iattr *iattr);
	int (*o_getattr)(unsigned int conn_id, unsigned long id, struct iattr *iattr);
	int (*o_statfs)(unsigned int conn_id, struct statfs *statfs);
	int (*o_create)(struct obd_device *, int prealloc_ino, int *er);
	int (*o_destroy)(unsigned int conn_id, unsigned long ino);
	unsigned long (*o_read)(unsigned int conn_id, unsigned long ino, char *buf, unsigned long count, loff_t offset, int *err);
	unsigned long (*o_read2)(unsigned int conn_id, unsigned long ino, char *buf, unsigned long count, loff_t offset, int *err);
	unsigned long (*o_write)(unsigned int conn_id, unsigned long ino, char *buf, unsigned long count, loff_t offset, int *err);
	int (*o_brw)(int rw, int conn, int objectid, struct page *page);
	long (*o_preallocate)(unsigned int conn_id, int req, long inodes[32], int *err);
	void (*o_cleanup_device)(int dev);
};

int obd_register_type(struct obd_ops *ops, char *nm);


struct obd_client {
	struct list_head cli_chain;
	kdev_t minor;
	unsigned int cli_id;
	unsigned long cli_prealloc_quota;
	struct list_head cli_prealloc_inodes;
};

struct obd_prealloc_inode {
	struct list_head obd_prealloc_chain;
	unsigned long inode;
};

/*
 * ioctl commands
 */
struct oic_prealloc_s {
	unsigned long cli_id;
	unsigned long alloc; /* user sets it to the number of inodes requesting
		     * to be preallocated.  kernel sets it to the actual number
		     * of succesfully preallocated inodes */
	long inodes[32]; /* actual inode numbers */
};
struct oic_attr_s {
	unsigned int conn_id;
	unsigned long inode;

	struct iattr iattr;
};
struct oic_rw_s {
	unsigned int conn_id;
	unsigned long inode;
	char * buf;
	unsigned long count;
	loff_t offset;
};
struct oic_partition {
	int partition;
	unsigned int size;
};


#define OBD_IOC_CREATE                 _IOR ('f',  3, long)
#define OBD_IOC_SETUP_OBDDEV           _IOW ('f',  4, long)
#define OBD_IOC_CLEANUP_OBDDEV         _IO  ('f',  5      )
#define OBD_IOC_DESTROY                _IOW ('f',  6, long)
#define OBD_IOC_PREALLOCATE            _IOWR('f',  7, long)
#define OBD_IOC_DEC_USE_COUNT          _IO  ('f',  8      )
#define OBD_IOC_SETATTR                _IOW ('f',  9, long)
#define OBD_IOC_GETATTR                _IOR ('f', 10, long)
#define OBD_IOC_READ                   _IOWR('f', 11, long)
#define OBD_IOC_WRITE                  _IOWR('f', 12, long)
#define OBD_IOC_CONNECT                _IOR ('f', 13, long)
#define OBD_IOC_DISCONNECT             _IOW ('f', 14, long)
#define OBD_IOC_STATFS                 _IOWR('f', 15, long)
#define OBD_IOC_SYNC                   _IOR ('f',  16, long)
#define OBD_IOC_READ2                  _IOWR('f', 17, long)
#define OBD_IOC_FORMAT                 _IO('f', 17, long)
#define OBD_IOC_READ2                  _IOWR('f', 17, long)

#define OBD_IOC_DEC_FS_USE_COUNT       _IO  ('f', 32      )


/* sysctl.c */
extern void obd_sysctl_init (void);
extern void obd_sysctl_clean (void);


#endif /* __LINUX_SIM_OBD_H */