sh_intc.h revision 44629f57accccbb8e6d443246fe6f51b42f7f781 
1#ifndef __SH_INTC_H
2#define __SH_INTC_H
3
4#include <linux/ioport.h>
5
6typedef unsigned char intc_enum;
7
8struct intc_vect {
9	intc_enum enum_id;
10	unsigned short vect;
11};
12
13#define INTC_VECT(enum_id, vect) { enum_id, vect }
14#define INTC_IRQ(enum_id, irq) INTC_VECT(enum_id, irq2evt(irq))
15
16struct intc_group {
17	intc_enum enum_id;
18	intc_enum enum_ids[32];
19};
20
21#define INTC_GROUP(enum_id, ids...) { enum_id, { ids } }
22
23struct intc_mask_reg {
24	unsigned long set_reg, clr_reg, reg_width;
25	intc_enum enum_ids[32];
26#ifdef CONFIG_INTC_BALANCING
27	unsigned long dist_reg;
28#endif
29#ifdef CONFIG_SMP
30	unsigned long smp;
31#endif
32};
33
34struct intc_prio_reg {
35	unsigned long set_reg, clr_reg, reg_width, field_width;
36	intc_enum enum_ids[16];
37#ifdef CONFIG_SMP
38	unsigned long smp;
39#endif
40};
41
42struct intc_sense_reg {
43	unsigned long reg, reg_width, field_width;
44	intc_enum enum_ids[16];
45};
46
47#ifdef CONFIG_INTC_BALANCING
48#define INTC_SMP_BALANCING(reg)	.dist_reg = (reg)
49#else
50#define INTC_SMP_BALANCING(reg)
51#endif
52
53#ifdef CONFIG_SMP
54#define INTC_SMP(stride, nr)	.smp = (stride) | ((nr) << 8)
55#else
56#define INTC_SMP(stride, nr)
57#endif
58
59struct intc_hw_desc {
60	struct intc_vect *vectors;
61	unsigned int nr_vectors;
62	struct intc_group *groups;
63	unsigned int nr_groups;
64	struct intc_mask_reg *mask_regs;
65	unsigned int nr_mask_regs;
66	struct intc_prio_reg *prio_regs;
67	unsigned int nr_prio_regs;
68	struct intc_sense_reg *sense_regs;
69	unsigned int nr_sense_regs;
70	struct intc_mask_reg *ack_regs;
71	unsigned int nr_ack_regs;
72};
73
74#define _INTC_ARRAY(a) a, sizeof(a)/sizeof(*a)
75#define INTC_HW_DESC(vectors, groups, mask_regs,	\
76		     prio_regs,	sense_regs, ack_regs)	\
77{							\
78	_INTC_ARRAY(vectors), _INTC_ARRAY(groups),	\
79	_INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs),	\
80	_INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs),	\
81}
82
83struct intc_desc {
84	char *name;
85	struct resource *resource;
86	unsigned int num_resources;
87	intc_enum force_enable;
88	intc_enum force_disable;
89	struct intc_hw_desc hw;
90};
91
92#define DECLARE_INTC_DESC(symbol, chipname, vectors, groups,		\
93	mask_regs, prio_regs, sense_regs)				\
94struct intc_desc symbol __initdata = {					\
95	.name = chipname,						\
96	.hw = INTC_HW_DESC(vectors, groups, mask_regs,			\
97			   prio_regs, sense_regs, NULL),		\
98}
99
100#define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups,	\
101	mask_regs, prio_regs, sense_regs, ack_regs)			\
102struct intc_desc symbol __initdata = {					\
103	.name = chipname,						\
104	.hw = INTC_HW_DESC(vectors, groups, mask_regs,			\
105			   prio_regs, sense_regs, ack_regs),		\
106}
107
108int __init register_intc_controller(struct intc_desc *desc);
109void reserve_intc_vectors(struct intc_vect *vectors, unsigned int nr_vecs);
110int intc_set_priority(unsigned int irq, unsigned int prio);
111unsigned int intc_irq_lookup(const char *chipname, intc_enum enum_id);
112
113#ifdef CONFIG_INTC_USERIMASK
114int register_intc_userimask(unsigned long addr);
115#else
116static inline int register_intc_userimask(unsigned long addr)
117{
118	return 0;
119}
120#endif
121
122int reserve_irq_vector(unsigned int irq);
123void reserve_irq_legacy(void);
124
125#endif /* __SH_INTC_H */
126