hw/sh_intc.h

   1 #ifndef __SH_INTC_H__
   2 #define __SH_INTC_H__
   3
   4 typedef unsigned char intc_enum;
   5
   6 struct intc_vect {
   7     intc_enum enum_id;
   8     unsigned short vect;
   9 };
  10
  11 #define INTC_VECT(enum_id, vect) { enum_id, vect }
  12
  13 struct intc_group {
  14     intc_enum enum_id;
  15     intc_enum enum_ids[32];
  16 };
  17
  18 #define INTC_GROUP(enum_id, ids...) { enum_id, { ids } }
  19
  20 struct intc_mask_reg {
  21     unsigned long set_reg, clr_reg, reg_width;
  22     intc_enum enum_ids[32];
  23     unsigned long value;
  24 };
  25
  26 struct intc_prio_reg {
  27     unsigned long set_reg, clr_reg, reg_width, field_width;
  28     intc_enum enum_ids[16];
  29     unsigned long value;
  30 };
  31
  32 #define _INTC_ARRAY(a) a, sizeof(a)/sizeof(*a)
  33
  34 struct intc_source {
  35     unsigned short vect;
  36     intc_enum next_enum_id;
  37
  38     int asserted; /* emulates the interrupt signal line from device to intc */
  39     int enable_count;
  40     int enable_max;
  41     int pending; /* emulates the result of signal and masking */
  42     struct intc_desc *parent;
  43 };
  44
  45 struct intc_desc {
  46     struct intc_source *sources;
  47     int nr_sources;
  48     struct intc_mask_reg *mask_regs;
  49     int nr_mask_regs;
  50     struct intc_prio_reg *prio_regs;
  51     int nr_prio_regs;
  52
  53     int iomemtype;
  54     int pending; /* number of interrupt sources that has pending set */
  55 };
  56
  57 int sh_intc_get_pending_vector(struct intc_desc *desc, int imask);
  58 struct intc_source *sh_intc_source(struct intc_desc *desc, intc_enum id);
  59 void sh_intc_toggle_source(struct intc_source *source,
  60                            int enable_adj, int assert_adj);
  61
  62 void sh_intc_register_sources(struct intc_desc *desc,
  63                               struct intc_vect *vectors,
  64                               int nr_vectors,
  65                               struct intc_group *groups,
  66                               int nr_groups);
  67
  68 int sh_intc_init(struct intc_desc *desc,
  69                  int nr_sources,
  70                  struct intc_mask_reg *mask_regs,
  71                  int nr_mask_regs,
  72                  struct intc_prio_reg *prio_regs,
  73                  int nr_prio_regs);
  74
  75 #endif /* __SH_INTC_H__ */