include/linux/sh_intc.h

   1 #ifndef __SH_INTC_H
   2 #define __SH_INTC_H
   3
   4 #include <linux/ioport.h>
   5
   6 typedef unsigned char intc_enum;
   7
   8 struct 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
  16 struct 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
  23 struct intc_subgroup {
  24         unsigned long reg, reg_width;
  25         intc_enum parent_id;
  26         intc_enum enum_ids[32];
  27 };
  28
  29 struct intc_mask_reg {
  30         unsigned long set_reg, clr_reg, reg_width;
  31         intc_enum enum_ids[32];
  32 #ifdef CONFIG_INTC_BALANCING
  33         unsigned long dist_reg;
  34 #endif
  35 #ifdef CONFIG_SMP
  36         unsigned long smp;
  37 #endif
  38 };
  39
  40 struct intc_prio_reg {
  41         unsigned long set_reg, clr_reg, reg_width, field_width;
  42         intc_enum enum_ids[16];
  43 #ifdef CONFIG_SMP
  44         unsigned long smp;
  45 #endif
  46 };
  47
  48 struct intc_sense_reg {
  49         unsigned long reg, reg_width, field_width;
  50         intc_enum enum_ids[16];
  51 };
  52
  53 #ifdef CONFIG_INTC_BALANCING
  54 #define INTC_SMP_BALANCING(reg) .dist_reg = (reg)
  55 #else
  56 #define INTC_SMP_BALANCING(reg)
  57 #endif
  58
  59 #ifdef CONFIG_SMP
  60 #define INTC_SMP(stride, nr)    .smp = (stride) | ((nr) << 8)
  61 #else
  62 #define INTC_SMP(stride, nr)
  63 #endif
  64
  65 struct intc_hw_desc {
  66         struct intc_vect *vectors;
  67         unsigned int nr_vectors;
  68         struct intc_group *groups;
  69         unsigned int nr_groups;
  70         struct intc_mask_reg *mask_regs;
  71         unsigned int nr_mask_regs;
  72         struct intc_prio_reg *prio_regs;
  73         unsigned int nr_prio_regs;
  74         struct intc_sense_reg *sense_regs;
  75         unsigned int nr_sense_regs;
  76         struct intc_mask_reg *ack_regs;
  77         unsigned int nr_ack_regs;
  78         struct intc_subgroup *subgroups;
  79         unsigned int nr_subgroups;
  80 };
  81
  82 #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(*a)
  83
  84 #define INTC_HW_DESC(vectors, groups, mask_regs,        \
  85                      prio_regs, sense_regs, ack_regs)   \
  86 {                                                       \
  87         _INTC_ARRAY(vectors), _INTC_ARRAY(groups),      \
  88         _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
  89         _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \
  90 }
  91
  92 struct intc_desc {
  93         char *name;
  94         struct resource *resource;
  95         unsigned int num_resources;
  96         intc_enum force_enable;
  97         intc_enum force_disable;
  98         struct intc_hw_desc hw;
  99 };
 100
 101 #define DECLARE_INTC_DESC(symbol, chipname, vectors, groups,            \
 102         mask_regs, prio_regs, sense_regs)                               \
 103 struct intc_desc symbol __initdata = {                                  \
 104         .name = chipname,                                               \
 105         .hw = INTC_HW_DESC(vectors, groups, mask_regs,                  \
 106                            prio_regs, sense_regs, NULL),                \
 107 }
 108
 109 #define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups,        \
 110         mask_regs, prio_regs, sense_regs, ack_regs)                     \
 111 struct intc_desc symbol __initdata = {                                  \
 112         .name = chipname,                                               \
 113         .hw = INTC_HW_DESC(vectors, groups, mask_regs,                  \
 114                            prio_regs, sense_regs, ack_regs),            \
 115 }
 116
 117 int register_intc_controller(struct intc_desc *desc);
 118 void reserve_intc_vectors(struct intc_vect *vectors, unsigned int nr_vecs);
 119 int intc_set_priority(unsigned int irq, unsigned int prio);
 120 int intc_irq_lookup(const char *chipname, intc_enum enum_id);
 121 void intc_finalize(void);
 122
 123 #ifdef CONFIG_INTC_USERIMASK
 124 int register_intc_userimask(unsigned long addr);
 125 #else
 126 static inline int register_intc_userimask(unsigned long addr)
 127 {
 128         return 0;
 129 }
 130 #endif
 131
 132 #endif /* __SH_INTC_H */