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_SMP
  27         unsigned long smp;
  28 #endif
  29 };
  30
  31 struct intc_prio_reg {
  32         unsigned long set_reg, clr_reg, reg_width, field_width;
  33         intc_enum enum_ids[16];
  34 #ifdef CONFIG_SMP
  35         unsigned long smp;
  36 #endif
  37 };
  38
  39 struct intc_sense_reg {
  40         unsigned long reg, reg_width, field_width;
  41         intc_enum enum_ids[16];
  42 };
  43
  44 #ifdef CONFIG_SMP
  45 #define INTC_SMP(stride, nr) .smp = (stride) | ((nr) << 8)
  46 #else
  47 #define INTC_SMP(stride, nr)
  48 #endif
  49
  50 struct intc_hw_desc {
  51         struct intc_vect *vectors;
  52         unsigned int nr_vectors;
  53         struct intc_group *groups;
  54         unsigned int nr_groups;
  55         struct intc_mask_reg *mask_regs;
  56         unsigned int nr_mask_regs;
  57         struct intc_prio_reg *prio_regs;
  58         unsigned int nr_prio_regs;
  59         struct intc_sense_reg *sense_regs;
  60         unsigned int nr_sense_regs;
  61         struct intc_mask_reg *ack_regs;
  62         unsigned int nr_ack_regs;
  63 };
  64
  65 #define _INTC_ARRAY(a) a, sizeof(a)/sizeof(*a)
  66 #define INTC_HW_DESC(vectors, groups, mask_regs,        \
  67                      prio_regs, sense_regs, ack_regs)   \
  68 {                                                       \
  69         _INTC_ARRAY(vectors), _INTC_ARRAY(groups),      \
  70         _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
  71         _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \
  72 }
  73
  74 struct intc_desc {
  75         char *name;
  76         struct resource *resource;
  77         unsigned int num_resources;
  78         intc_enum force_enable;
  79         intc_enum force_disable;
  80         struct intc_hw_desc hw;
  81 };
  82
  83 #define DECLARE_INTC_DESC(symbol, chipname, vectors, groups,            \
  84         mask_regs, prio_regs, sense_regs)                               \
  85 struct intc_desc symbol __initdata = {                                  \
  86         .name = chipname,                                               \
  87         .hw = INTC_HW_DESC(vectors, groups, mask_regs,                  \
  88                            prio_regs, sense_regs, NULL),                \
  89 }
  90
  91 #define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups,        \
  92         mask_regs, prio_regs, sense_regs, ack_regs)                     \
  93 struct intc_desc symbol __initdata = {                                  \
  94         .name = chipname,                                               \
  95         .hw = INTC_HW_DESC(vectors, groups, mask_regs,                  \
  96                            prio_regs, sense_regs, ack_regs),            \
  97 }
  98
  99 int __init register_intc_controller(struct intc_desc *desc);
 100 int intc_set_priority(unsigned int irq, unsigned int prio);
 101
 102 int reserve_irq_vector(unsigned int irq);
 103 void reserve_irq_legacy(void);
 104
 105 #endif /* __SH_INTC_H */