LXR qemu/hw/sh

   1#ifndef __SH_INTC_H__
   2#define __SH_INTC_H__
   3
   4#include "qemu-common.h"
   5#include "irq.h"
   6#include "exec-memory.h"
   7
   8typedef unsigned char intc_enum;
   9
  10struct intc_vect {
  11    intc_enum enum_id;
  12    unsigned short vect;
  13};
  14
  15#define INTC_VECT(enum_id, vect) { enum_id, vect }
  16
  17struct 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
  24struct intc_mask_reg {
  25    unsigned long set_reg, clr_reg, reg_width;
  26    intc_enum enum_ids[32];
  27    unsigned long value;
  28};
  29
  30struct 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
  38struct 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
  49struct 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
  62int sh_intc_get_pending_vector(struct intc_desc *desc, int imask);
  63struct intc_source *sh_intc_source(struct intc_desc *desc, intc_enum id);
  64void sh_intc_toggle_source(struct intc_source *source,
  65                           int enable_adj, int assert_adj);
  66
  67void 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
  73int 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
  81void sh_intc_set_irl(void *opaque, int n, int level);
  82
  83#endif /* __SH_INTC_H__ */
  84