LXR qemu/hw/realview

   1/*
   2 * ARM RealView Emulation Baseboard Interrupt Controller
   3 *
   4 * Copyright (c) 2006-2007 CodeSourcery.
   5 * Written by Paul Brook
   6 *
   7 * This code is licenced under the GPL.
   8 */
   9
  10#include "sysbus.h"
  11
  12#define GIC_NIRQ 96
  13#define NCPU 1
  14
  15/* Only a single "CPU" interface is present.  */
  16static inline int
  17gic_get_current_cpu(void)
  18{
  19  return 0;
  20}
  21
  22#include "arm_gic.c"
  23
  24typedef struct {
  25    gic_state gic;
  26    int iomemtype;
  27} RealViewGICState;
  28
  29static uint32_t realview_gic_cpu_read(void *opaque, target_phys_addr_t offset)
  30{
  31    gic_state *s = (gic_state *)opaque;
  32    return gic_cpu_read(s, gic_get_current_cpu(), offset);
  33}
  34
  35static void realview_gic_cpu_write(void *opaque, target_phys_addr_t offset,
  36                          uint32_t value)
  37{
  38    gic_state *s = (gic_state *)opaque;
  39    gic_cpu_write(s, gic_get_current_cpu(), offset, value);
  40}
  41
  42static CPUReadMemoryFunc * const realview_gic_cpu_readfn[] = {
  43   realview_gic_cpu_read,
  44   realview_gic_cpu_read,
  45   realview_gic_cpu_read
  46};
  47
  48static CPUWriteMemoryFunc * const realview_gic_cpu_writefn[] = {
  49   realview_gic_cpu_write,
  50   realview_gic_cpu_write,
  51   realview_gic_cpu_write
  52};
  53
  54static void realview_gic_map(SysBusDevice *dev, target_phys_addr_t base)
  55{
  56    RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev);
  57    cpu_register_physical_memory(base, 0x1000, s->iomemtype);
  58    cpu_register_physical_memory(base + 0x1000, 0x1000, s->gic.iomemtype);
  59}
  60
  61static int realview_gic_init(SysBusDevice *dev)
  62{
  63    RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev);
  64
  65    gic_init(&s->gic);
  66    s->iomemtype = cpu_register_io_memory(realview_gic_cpu_readfn,
  67                                          realview_gic_cpu_writefn, s);
  68    sysbus_init_mmio_cb(dev, 0x2000, realview_gic_map);
  69    return 0;
  70}
  71
  72static void realview_gic_register_devices(void)
  73{
  74    sysbus_register_dev("realview_gic", sizeof(RealViewGICState),
  75                        realview_gic_init);
  76}
  77
  78device_init(realview_gic_register_devices)
  79