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_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
  34 struct 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
  42 struct 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
  59 struct 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
  83 struct 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)                               \
  94 struct 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)                     \
 102 struct 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
 108 int __init register_intc_controller(struct intc_desc *desc);
 109 int intc_set_priority(unsigned int irq, unsigned int prio);
 110
 111 #ifdef CONFIG_INTC_USERIMASK
 112 int register_intc_userimask(unsigned long addr);
 113 #else
 114 static inline int register_intc_userimask(unsigned long addr)
 115 {
 116         return 0;
 117 }
 118 #endif
 119
 120 int reserve_irq_vector(unsigned int irq);
 121 void reserve_irq_legacy(void);
 122
 123 #endif /* __SH_INTC_H */