1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __SH_INTC_H |
3 | #define __SH_INTC_H |
4 | |
5 | #include <linux/ioport.h> |
6 | |
7 | #ifdef CONFIG_SUPERH |
8 | #define INTC_NR_IRQS 512 |
9 | #else |
10 | #define INTC_NR_IRQS 1024 |
11 | #endif |
12 | |
13 | /* |
14 | * Convert back and forth between INTEVT and IRQ values. |
15 | */ |
16 | #ifdef CONFIG_CPU_HAS_INTEVT /* Avoid IRQ0 (invalid for platform devices) */ |
17 | #define evt2irq(evt) ((evt) >> 5) |
18 | #define irq2evt(irq) ((irq) << 5) |
19 | #else |
20 | #define evt2irq(evt) (evt) |
21 | #define irq2evt(irq) (irq) |
22 | #endif |
23 | |
24 | typedef unsigned char intc_enum; |
25 | |
26 | struct intc_vect { |
27 | intc_enum enum_id; |
28 | unsigned short vect; |
29 | }; |
30 | |
31 | #define INTC_VECT(enum_id, vect) { enum_id, vect } |
32 | #define INTC_IRQ(enum_id, irq) INTC_VECT(enum_id, irq2evt(irq)) |
33 | |
34 | struct intc_group { |
35 | intc_enum enum_id; |
36 | intc_enum enum_ids[32]; |
37 | }; |
38 | |
39 | #define INTC_GROUP(enum_id, ids...) { enum_id, { ids } } |
40 | |
41 | struct intc_subgroup { |
42 | unsigned long reg, reg_width; |
43 | intc_enum parent_id; |
44 | intc_enum enum_ids[32]; |
45 | }; |
46 | |
47 | struct intc_mask_reg { |
48 | unsigned long set_reg, clr_reg, reg_width; |
49 | intc_enum enum_ids[32]; |
50 | #ifdef CONFIG_INTC_BALANCING |
51 | unsigned long dist_reg; |
52 | #endif |
53 | #ifdef CONFIG_SMP |
54 | unsigned long smp; |
55 | #endif |
56 | }; |
57 | |
58 | struct intc_prio_reg { |
59 | unsigned long set_reg, clr_reg, reg_width, field_width; |
60 | intc_enum enum_ids[16]; |
61 | #ifdef CONFIG_SMP |
62 | unsigned long smp; |
63 | #endif |
64 | }; |
65 | |
66 | struct intc_sense_reg { |
67 | unsigned long reg, reg_width, field_width; |
68 | intc_enum enum_ids[16]; |
69 | }; |
70 | |
71 | #ifdef CONFIG_INTC_BALANCING |
72 | #define INTC_SMP_BALANCING(reg) .dist_reg = (reg) |
73 | #else |
74 | #define INTC_SMP_BALANCING(reg) |
75 | #endif |
76 | |
77 | #ifdef CONFIG_SMP |
78 | #define INTC_SMP(stride, nr) .smp = (stride) | ((nr) << 8) |
79 | #else |
80 | #define INTC_SMP(stride, nr) |
81 | #endif |
82 | |
83 | struct intc_hw_desc { |
84 | struct intc_vect *vectors; |
85 | unsigned int nr_vectors; |
86 | struct intc_group *groups; |
87 | unsigned int nr_groups; |
88 | struct intc_mask_reg *mask_regs; |
89 | unsigned int nr_mask_regs; |
90 | struct intc_prio_reg *prio_regs; |
91 | unsigned int nr_prio_regs; |
92 | struct intc_sense_reg *sense_regs; |
93 | unsigned int nr_sense_regs; |
94 | struct intc_mask_reg *ack_regs; |
95 | unsigned int nr_ack_regs; |
96 | struct intc_subgroup *subgroups; |
97 | unsigned int nr_subgroups; |
98 | }; |
99 | |
100 | #define _INTC_SIZEOF_OR_ZERO(a) (_Generic(a, \ |
101 | typeof(NULL): 0, \ |
102 | default: sizeof(a))) |
103 | #define _INTC_ARRAY(a) a, _INTC_SIZEOF_OR_ZERO(a)/sizeof(*a) |
104 | |
105 | #define INTC_HW_DESC(vectors, groups, mask_regs, \ |
106 | prio_regs, sense_regs, ack_regs) \ |
107 | { \ |
108 | _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \ |
109 | _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \ |
110 | _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \ |
111 | } |
112 | |
113 | struct intc_desc { |
114 | char *name; |
115 | struct resource *resource; |
116 | unsigned int num_resources; |
117 | intc_enum force_enable; |
118 | intc_enum force_disable; |
119 | bool skip_syscore_suspend; |
120 | struct intc_hw_desc hw; |
121 | }; |
122 | |
123 | #define DECLARE_INTC_DESC(symbol, chipname, vectors, groups, \ |
124 | mask_regs, prio_regs, sense_regs) \ |
125 | struct intc_desc symbol __initdata = { \ |
126 | .name = chipname, \ |
127 | .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ |
128 | prio_regs, sense_regs, NULL), \ |
129 | } |
130 | |
131 | #define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups, \ |
132 | mask_regs, prio_regs, sense_regs, ack_regs) \ |
133 | struct intc_desc symbol __initdata = { \ |
134 | .name = chipname, \ |
135 | .hw = INTC_HW_DESC(vectors, groups, mask_regs, \ |
136 | prio_regs, sense_regs, ack_regs), \ |
137 | } |
138 | |
139 | int register_intc_controller(struct intc_desc *desc); |
140 | int intc_set_priority(unsigned int irq, unsigned int prio); |
141 | int intc_irq_lookup(const char *chipname, intc_enum enum_id); |
142 | void intc_finalize(void); |
143 | |
144 | #ifdef CONFIG_INTC_USERIMASK |
145 | int register_intc_userimask(unsigned long addr); |
146 | #else |
147 | static inline int register_intc_userimask(unsigned long addr) |
148 | { |
149 | return 0; |
150 | } |
151 | #endif |
152 | |
153 | #endif /* __SH_INTC_H */ |
154 | |