linux/include/linux/sh_intc.h
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   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
  23typedef unsigned char intc_enum;
  24
  25struct 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
  33struct 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
  40struct intc_subgroup {
  41        unsigned long reg, reg_width;
  42        intc_enum parent_id;
  43        intc_enum enum_ids[32];
  44};
  45
  46struct 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
  57struct 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
  65struct 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
  82struct 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
 109struct 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)                               \
 121struct 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)                     \
 129struct 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
 135int register_intc_controller(struct intc_desc *desc);
 136int intc_set_priority(unsigned int irq, unsigned int prio);
 137int intc_irq_lookup(const char *chipname, intc_enum enum_id);
 138void intc_finalize(void);
 139
 140#ifdef CONFIG_INTC_USERIMASK
 141int register_intc_userimask(unsigned long addr);
 142#else
 143static inline int register_intc_userimask(unsigned long addr)
 144{
 145        return 0;
 146}
 147#endif
 148
 149#endif /* __SH_INTC_H */
 150
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