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; 40 struct request_queue *queue; 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 */ 74