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