[linux-block.git] / include / asm-arm / arch-omap / mailbox.h

/* mailbox.h */

#ifndef MAILBOX_H
#define MAILBOX_H

#include <linux/wait.h>
#include <linux/workqueue.h>
#include <linux/blkdev.h>

typedef u32 mbox_msg_t;
typedef void (mbox_receiver_t)(mbox_msg_t msg);
struct omap_mbox;

typedef int __bitwise omap_mbox_irq_t;
#define IRQ_TX ((__force omap_mbox_irq_t) 1)
#define IRQ_RX ((__force omap_mbox_irq_t) 2)

typedef int __bitwise omap_mbox_type_t;
#define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1)
#define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2)

struct omap_mbox_ops {
	omap_mbox_type_t	type;
	int		(*startup)(struct omap_mbox *mbox);
	void		(*shutdown)(struct omap_mbox *mbox);
	/* fifo */
	mbox_msg_t	(*fifo_read)(struct omap_mbox *mbox);
	void		(*fifo_write)(struct omap_mbox *mbox, mbox_msg_t msg);
	int		(*fifo_empty)(struct omap_mbox *mbox);
	int		(*fifo_full)(struct omap_mbox *mbox);
	/* irq */
	void		(*enable_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
	void		(*disable_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
	void		(*ack_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
	int		(*is_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
};

struct omap_mbox_queue {
	spinlock_t		lock;
	struct request_queue	*queue;
	struct work_struct	work;
	int	(*callback)(void *);
	struct omap_mbox	*mbox;
};

struct omap_mbox {
	char			*name;
	unsigned int		irq;

	struct omap_mbox_queue	*txq, *rxq;

	struct omap_mbox_ops	*ops;

	mbox_msg_t		seq_snd, seq_rcv;

	struct device		dev;

	struct omap_mbox	*next;
	void			*priv;

	void			(*err_notify)(void);
};

int omap_mbox_msg_send(struct omap_mbox *, mbox_msg_t msg, void *);
void omap_mbox_init_seq(struct omap_mbox *);

struct omap_mbox *omap_mbox_get(const char *);
void omap_mbox_put(struct omap_mbox *);

int omap_mbox_register(struct omap_mbox *);
int omap_mbox_unregister(struct omap_mbox *);

#endif /* MAILBOX_H */
Commit	Line	Data
340a614a HD	1	/* mailbox.h */
	2
	3	#ifndef MAILBOX_H
	4	#define MAILBOX_H
	5
	6	#include <linux/wait.h>
	7	#include <linux/workqueue.h>
	8	#include <linux/blkdev.h>
	9
	10	typedef u32 mbox_msg_t;
	11	typedef void (mbox_receiver_t)(mbox_msg_t msg);
	12	struct omap_mbox;
	13
	14	typedef int __bitwise omap_mbox_irq_t;
	15	#define IRQ_TX ((__force omap_mbox_irq_t) 1)
	16	#define IRQ_RX ((__force omap_mbox_irq_t) 2)
	17
	18	typedef int __bitwise omap_mbox_type_t;
	19	#define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1)
	20	#define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2)
	21
	22	struct omap_mbox_ops {
	23	omap_mbox_type_t type;
	24	int (startup)(struct omap_mbox mbox);
	25	void (shutdown)(struct omap_mbox mbox);
	26	/* fifo */
	27	mbox_msg_t (fifo_read)(struct omap_mbox mbox);
	28	void (fifo_write)(struct omap_mbox mbox, mbox_msg_t msg);
	29	int (fifo_empty)(struct omap_mbox mbox);
	30	int (fifo_full)(struct omap_mbox mbox);
	31	/* irq */
	32	void (enable_irq)(struct omap_mbox mbox, omap_mbox_irq_t irq);
	33	void (disable_irq)(struct omap_mbox mbox, omap_mbox_irq_t irq);
	34	void (ack_irq)(struct omap_mbox mbox, omap_mbox_irq_t irq);
	35	int (is_irq)(struct omap_mbox mbox, omap_mbox_irq_t irq);
	36	};
	37
	38	struct omap_mbox_queue {
	39	spinlock_t lock;
165125e1	40	struct request_queue *queue;
340a614a HD	41	struct work_struct work;
	42	int (callback)(void );
	43	struct omap_mbox *mbox;
	44	};
	45
	46	struct omap_mbox {
	47	char *name;
	48	unsigned int irq;
	49
	50	struct omap_mbox_queue txq, rxq;
	51
	52	struct omap_mbox_ops *ops;
	53
	54	mbox_msg_t seq_snd, seq_rcv;
	55
	56	struct device dev;
	57
	58	struct omap_mbox *next;
	59	void *priv;
	60
	61	void (*err_notify)(void);
	62	};
	63
	64	int omap_mbox_msg_send(struct omap_mbox , mbox_msg_t msg, void );
	65	void omap_mbox_init_seq(struct omap_mbox *);
	66
	67	struct omap_mbox omap_mbox_get(const char );
	68	void omap_mbox_put(struct omap_mbox *);
	69
	70	int omap_mbox_register(struct omap_mbox *);
	71	int omap_mbox_unregister(struct omap_mbox *);
	72
	73	#endif /* MAILBOX_H */