hw/sh_intc.h

   1 #ifndef __SH_INTC_H__
   2 #define __SH_INTC_H__
   3
   4 #include "qemu-common.h"
   5 #include "hw/irq.h"
   6 #include "exec/address-spaces.h"
   7
   8 typedef unsigned char intc_enum;
   9
  10 struct intc_vect {
  11     intc_enum enum_id;
  12     unsigned short vect;
  13 };
  14
  15 #define INTC_VECT(enum_id, vect) { enum_id, vect }
  16
  17 struct intc_group {
  18     intc_enum enum_id;
  19     intc_enum enum_ids[32];
  20 };
  21
  22 #define INTC_GROUP(enum_id, ...) { enum_id, {  __VA_ARGS__ } }
  23
  24 struct intc_mask_reg {
  25     unsigned long set_reg, clr_reg, reg_width;
  26     intc_enum enum_ids[32];
  27     unsigned long value;
  28 };
  29
  30 struct intc_prio_reg {
  31     unsigned long set_reg, clr_reg, reg_width, field_width;
  32     intc_enum enum_ids[16];
  33     unsigned long value;
  34 };
  35
  36 #define _INTC_ARRAY(a) a, ARRAY_SIZE(a)
  37
  38 struct intc_source {
  39     unsigned short vect;
  40     intc_enum next_enum_id;
  41
  42     int asserted; /* emulates the interrupt signal line from device to intc */
  43     int enable_count;
  44     int enable_max;
  45     int pending; /* emulates the result of signal and masking */
  46     struct intc_desc *parent;
  47 };
  48
  49 struct intc_desc {
  50     MemoryRegion iomem;
  51     MemoryRegion *iomem_aliases;
  52     qemu_irq *irqs;
  53     struct intc_source *sources;
  54     int nr_sources;
  55     struct intc_mask_reg *mask_regs;
  56     int nr_mask_regs;
  57     struct intc_prio_reg *prio_regs;
  58     int nr_prio_regs;
  59     int pending; /* number of interrupt sources that has pending set */
  60 };
  61
  62 int sh_intc_get_pending_vector(struct intc_desc *desc, int imask);
  63 struct intc_source *sh_intc_source(struct intc_desc *desc, intc_enum id);
  64 void sh_intc_toggle_source(struct intc_source *source,
  65                            int enable_adj, int assert_adj);
  66
  67 void sh_intc_register_sources(struct intc_desc *desc,
  68                               struct intc_vect *vectors,
  69                               int nr_vectors,
  70                               struct intc_group *groups,
  71                               int nr_groups);
  72
  73 int sh_intc_init(MemoryRegion *sysmem,
  74                  struct intc_desc *desc,
  75                  int nr_sources,
  76                  struct intc_mask_reg *mask_regs,
  77                  int nr_mask_regs,
  78                  struct intc_prio_reg *prio_regs,
  79                  int nr_prio_regs);
  80
  81 void sh_intc_set_irl(void *opaque, int n, int level);
  82
  83 #endif /* __SH_INTC_H__ */