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picvar.h revision 1.1.2.2 
      1 #ifndef _ARM_PIC31_PICVAR_H_
      2 #define _ARM_PIC31_PICVAR_H_
      3 
      4 struct pic_softc;
      5 struct intrsource;
      6 
      7 int	pic_handle_intr(void *);
      8 void	pic_mark_pending(struct pic_softc *pic, int irq);
      9 void	pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is);
     10 void	*pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type,
     11 	    int (*func)(void *), void *arg);
     12 int	pic_alloc_irq(struct pic_softc *pic);
     13 void	pic_disestablish_source(struct intrsource *is);
     14 void	pic_do_pending_ints(register_t psw, int newipl);
     15 void	pic_dispatch(struct intrsource *is, void *frame);
     16 
     17 #ifdef _INTR_PRIVATE
     18 
     19 #ifndef PIC_MAXPICS
     20 #define PIC_MAXPICS	32
     21 #endif
     22 #ifndef PIC_MAXSOURCES
     23 #define	PIC_MAXSOURCES	64
     24 #endif
     25 
     26 struct intrsource {
     27 	int (*is_func)(void *);
     28 	void *is_arg;
     29 	struct pic_softc *is_pic;		/* owning PIC */
     30 	uint8_t is_type;			/* IST_xxx */
     31 	uint8_t is_ipl;				/* IPL_xxx */
     32 	uint8_t is_irq;				/* local to pic */
     33 	struct evcnt is_ev;
     34 	char is_source[16];
     35 };
     36 
     37 struct pic_softc {
     38 	const struct pic_ops *pic_ops;
     39 	struct intrsource **pic_sources;
     40 	uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32];
     41 	uint32_t pic_pending_ipls;
     42 	size_t pic_maxsources;
     43 	uint8_t pic_id;
     44 	uint16_t pic_irqbase;
     45 	char pic_name[14];
     46 };
     47 
     48 struct pic_ops {
     49 	void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t);
     50 	void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t);
     51 	int (*pic_find_pending_irqs)(struct pic_softc *);
     52 
     53 	void (*pic_establish_irq)(struct pic_softc *, int, int, int);
     54 	void (*pic_source_name)(struct pic_softc *, int, char *, size_t);
     55 };
     56 
     57 
     58 bool	pic_add(struct pic_softc *, int);
     59 void	pic_do_pending_int(void);
     60 
     61 extern struct pic_softc * pic_list[PIC_MAXPICS];
     62 extern volatile uint32_t pic_pending_pics[(PIC_MAXPICS + 31) / 32];
     63 extern volatile uint32_t pic_pending_ipls;
     64 extern int pic_pending_ipl_refcnt[NIPL];
     65 
     66 #endif /* _INTR_PRIVATE */
     67 
     68 #endif /* _ARM_PIC_PICVAR_H_ */
     69