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rmixl_intr.h revision 1.1.2.2 
      1 /*	$NetBSD: rmixl_intr.h,v 1.1.2.2 2010/04/12 22:40:55 cliff Exp $	*/
      2 
      3 #ifndef _MIPS_RMI_RMIXL_INTR_H_
      4 #define _MIPS_RMI_RMIXL_INTR_H_
      5 
      6 /*
      7  * An 'irq' is an EIRR bit numbers or 'vector' as used in the PRM
      8  * - PIC-based irqs are in the range 0..31 and index into the IRT
      9  * - IRT entry <n> always routes to vector <n>
     10  * - non-PIC-based irqs are in the range 32..63
     11  * - only 1 intrhand_t per irq/vector
     12  */
     13 #define	NINTRVECS	64	/* bit width of the EIRR */
     14 #define	NIRTS		32	/* #entries in the Interrupt Redirection Table */
     15 
     16 /*
     17  * reserved vectors >=32
     18  */
     19 #define RMIXL_INTRVEC_IPI	32
     20 #define RMIXL_INTRVEC_FMN	33
     21 
     22 typedef enum {
     23 	RMIXL_TRIG_NONE=0,
     24 	RMIXL_TRIG_EDGE,
     25 	RMIXL_TRIG_LEVEL,
     26 } rmixl_intr_trigger_t;
     27 
     28 typedef enum {
     29 	RMIXL_POLR_NONE=0,
     30 	RMIXL_POLR_RISING,
     31 	RMIXL_POLR_HIGH,
     32 	RMIXL_POLR_FALLING,
     33 	RMIXL_POLR_LOW,
     34 } rmixl_intr_polarity_t;
     35 
     36 
     37 /*
     38  * iv_list and ref count manage sharing of each vector
     39  */
     40 typedef struct rmixl_intrhand {
     41         int (*ih_func)(void *);
     42         void *ih_arg;
     43         int ih_mpsafe; 			/* true if does not need kernel lock */
     44         int ih_irq;			/* >=32 if not-PIC-based */
     45         int ih_ipl; 			/* interrupt priority */
     46         int ih_cpumask; 		/* CPUs which may handle this irpt */
     47 } rmixl_intrhand_t;
     48 
     49 /*
     50  * stuff exported from rmixl_spl.S
     51  */
     52 extern const struct splsw rmixl_splsw;
     53 extern uint64_t ipl_eimr_map[];
     54 
     55 extern void *rmixl_intr_establish(int, int, int,
     56 	rmixl_intr_trigger_t, rmixl_intr_polarity_t,
     57 	int (*)(void *), void *, bool);
     58 extern void  rmixl_intr_disestablish(void *);
     59 extern void *rmixl_vec_establish(int, int, int,
     60 	int (*)(void *), void *, bool);
     61 extern void  rmixl_vec_disestablish(void *);
     62 extern const char *rmixl_intr_string(int);
     63 extern void rmixl_intr_init_cpu(struct cpu_info *);
     64 extern void *rmixl_intr_init_clk(void);
     65 #ifdef MULTIPROCESSOR
     66 extern void *rmixl_intr_init_ipi(void);
     67 #endif
     68 
     69 #endif	/* _MIPS_RMI_RMIXL_INTR_H_ */
     70