include/hw/sh4/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
   7 typedef unsigned char intc_enum;
   8
   9 struct intc_vect {
  10     intc_enum enum_id;
  11     unsigned short vect;
  12 };
  13
  14 #define INTC_VECT(enum_id, vect) { enum_id, vect }
  15
  16 struct intc_group {
  17     intc_enum enum_id;
  18     intc_enum enum_ids[32];
  19 };
  20
  21 #define INTC_GROUP(enum_id, ...) { enum_id, {  __VA_ARGS__ } }
  22
  23 struct intc_mask_reg {
  24     unsigned long set_reg, clr_reg, reg_width;
  25     intc_enum enum_ids[32];
  26     unsigned long value;
  27 };
  28
  29 struct intc_prio_reg {
  30     unsigned long set_reg, clr_reg, reg_width, field_width;
  31     intc_enum enum_ids[16];
  32     unsigned long value;
  33 };
  34
  35 #define _INTC_ARRAY(a) a, ARRAY_SIZE(a)
  36
  37 struct intc_source {
  38     unsigned short vect;
  39     intc_enum next_enum_id;
  40
  41     int asserted; /* emulates the interrupt signal line from device to intc */
  42     int enable_count;
  43     int enable_max;
  44     int pending; /* emulates the result of signal and masking */
  45     struct intc_desc *parent;
  46 };
  47
  48 struct intc_desc {
  49     MemoryRegion iomem;
  50     MemoryRegion *iomem_aliases;
  51     qemu_irq *irqs;
  52     struct intc_source *sources;
  53     int nr_sources;
  54     struct intc_mask_reg *mask_regs;
  55     int nr_mask_regs;
  56     struct intc_prio_reg *prio_regs;
  57     int nr_prio_regs;
  58     int pending; /* number of interrupt sources that has pending set */
  59 };
  60
  61 int sh_intc_get_pending_vector(struct intc_desc *desc, int imask);
  62 struct intc_source *sh_intc_source(struct intc_desc *desc, intc_enum id);
  63 void sh_intc_toggle_source(struct intc_source *source,
  64                            int enable_adj, int assert_adj);
  65
  66 void sh_intc_register_sources(struct intc_desc *desc,
  67                               struct intc_vect *vectors,
  68                               int nr_vectors,
  69                               struct intc_group *groups,
  70                               int nr_groups);
  71
  72 int sh_intc_init(MemoryRegion *sysmem,
  73                  struct intc_desc *desc,
  74                  int nr_sources,
  75                  struct intc_mask_reg *mask_regs,
  76                  int nr_mask_regs,
  77                  struct intc_prio_reg *prio_regs,
  78                  int nr_prio_regs);
  79
  80 void sh_intc_set_irl(void *opaque, int n, int level);
  81
  82 #endif /* SH_INTC_H */