include/hw/sh4/sh_intc.h

   1 #ifndef SH_INTC_H
   2 #define SH_INTC_H
   3
   4 #include "exec/memory.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
  15 struct intc_group {
  16     intc_enum enum_id;
  17     intc_enum enum_ids[32];
  18 };
  19
  20 #define INTC_GROUP(enum_id, ...) { enum_id, {  __VA_ARGS__ } }
  21
  22 struct intc_mask_reg {
  23     unsigned long set_reg, clr_reg, reg_width;
  24     intc_enum enum_ids[32];
  25     unsigned long value;
  26 };
  27
  28 struct intc_prio_reg {
  29     unsigned long set_reg, clr_reg, reg_width, field_width;
  30     intc_enum enum_ids[16];
  31     unsigned long value;
  32 };
  33
  34 #define _INTC_ARRAY(a) a, ARRAY_SIZE(a)
  35
  36 struct intc_source {
  37     unsigned short vect;
  38     intc_enum next_enum_id;
  39
  40     int asserted; /* emulates the interrupt signal line from device to intc */
  41     int enable_count;
  42     int enable_max;
  43     int pending; /* emulates the result of signal and masking */
  44     struct intc_desc *parent;
  45 };
  46
  47 struct intc_desc {
  48     MemoryRegion iomem;
  49     MemoryRegion *iomem_aliases;
  50     qemu_irq *irqs;
  51     struct intc_source *sources;
  52     int nr_sources;
  53     struct intc_mask_reg *mask_regs;
  54     int nr_mask_regs;
  55     struct intc_prio_reg *prio_regs;
  56     int nr_prio_regs;
  57     int pending; /* number of interrupt sources that has pending set */
  58 };
  59
  60 int sh_intc_get_pending_vector(struct intc_desc *desc, int imask);
  61 struct intc_source *sh_intc_source(struct intc_desc *desc, intc_enum id);
  62 void sh_intc_toggle_source(struct intc_source *source,
  63                            int enable_adj, int assert_adj);
  64
  65 void sh_intc_register_sources(struct intc_desc *desc,
  66                               struct intc_vect *vectors,
  67                               int nr_vectors,
  68                               struct intc_group *groups,
  69                               int nr_groups);
  70
  71 int sh_intc_init(MemoryRegion *sysmem,
  72                  struct intc_desc *desc,
  73                  int nr_sources,
  74                  struct intc_mask_reg *mask_regs,
  75                  int nr_mask_regs,
  76                  struct intc_prio_reg *prio_regs,
  77                  int nr_prio_regs);
  78
  79 void sh_intc_set_irl(void *opaque, int n, int level);
  80
  81 #endif /* SH_INTC_H */