LXR qemu/hw/ipack/ipack.c

   1/*
   2 * QEMU IndustryPack emulation
   3 *
   4 * Copyright (C) 2012 Igalia, S.L.
   5 * Author: Alberto Garcia <berto@igalia.com>
   6 *
   7 * This code is licensed under the GNU GPL v2 or (at your option) any
   8 * later version.
   9 */
  10
  11#include "qemu/osdep.h"
  12#include "qapi/error.h"
  13#include "hw/ipack/ipack.h"
  14
  15IPackDevice *ipack_device_find(IPackBus *bus, int32_t slot)
  16{
  17    BusChild *kid;
  18
  19    QTAILQ_FOREACH(kid, &BUS(bus)->children, sibling) {
  20        DeviceState *qdev = kid->child;
  21        IPackDevice *ip = IPACK_DEVICE(qdev);
  22        if (ip->slot == slot) {
  23            return ip;
  24        }
  25    }
  26    return NULL;
  27}
  28
  29void ipack_bus_new_inplace(IPackBus *bus, size_t bus_size,
  30                           DeviceState *parent,
  31                           const char *name, uint8_t n_slots,
  32                           qemu_irq_handler handler)
  33{
  34    qbus_create_inplace(bus, bus_size, TYPE_IPACK_BUS, parent, name);
  35    bus->n_slots = n_slots;
  36    bus->set_irq = handler;
  37}
  38
  39static void ipack_device_realize(DeviceState *dev, Error **errp)
  40{
  41    IPackDevice *idev = IPACK_DEVICE(dev);
  42    IPackBus *bus = IPACK_BUS(qdev_get_parent_bus(dev));
  43    IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev);
  44
  45    if (idev->slot < 0) {
  46        idev->slot = bus->free_slot;
  47    }
  48    if (idev->slot >= bus->n_slots) {
  49        error_setg(errp, "Only %" PRIu8 " slots available.", bus->n_slots);
  50        return;
  51    }
  52    bus->free_slot = idev->slot + 1;
  53
  54    idev->irq = qemu_allocate_irqs(bus->set_irq, idev, 2);
  55
  56    k->realize(dev, errp);
  57}
  58
  59static void ipack_device_unrealize(DeviceState *dev, Error **errp)
  60{
  61    IPackDevice *idev = IPACK_DEVICE(dev);
  62    IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev);
  63    Error *err = NULL;
  64
  65    if (k->unrealize) {
  66        k->unrealize(dev, &err);
  67        error_propagate(errp, err);
  68        return;
  69    }
  70
  71    qemu_free_irqs(idev->irq, 2);
  72}
  73
  74static Property ipack_device_props[] = {
  75    DEFINE_PROP_INT32("slot", IPackDevice, slot, -1),
  76    DEFINE_PROP_END_OF_LIST()
  77};
  78
  79static void ipack_device_class_init(ObjectClass *klass, void *data)
  80{
  81    DeviceClass *k = DEVICE_CLASS(klass);
  82
  83    set_bit(DEVICE_CATEGORY_INPUT, k->categories);
  84    k->bus_type = TYPE_IPACK_BUS;
  85    k->realize = ipack_device_realize;
  86    k->unrealize = ipack_device_unrealize;
  87    k->props = ipack_device_props;
  88}
  89
  90const VMStateDescription vmstate_ipack_device = {
  91    .name = "ipack_device",
  92    .version_id = 1,
  93    .minimum_version_id = 1,
  94    .fields = (VMStateField[]) {
  95        VMSTATE_INT32(slot, IPackDevice),
  96        VMSTATE_END_OF_LIST()
  97    }
  98};
  99
 100static const TypeInfo ipack_device_info = {
 101    .name          = TYPE_IPACK_DEVICE,
 102    .parent        = TYPE_DEVICE,
 103    .instance_size = sizeof(IPackDevice),
 104    .class_size    = sizeof(IPackDeviceClass),
 105    .class_init    = ipack_device_class_init,
 106    .abstract      = true,
 107};
 108
 109static const TypeInfo ipack_bus_info = {
 110    .name = TYPE_IPACK_BUS,
 111    .parent = TYPE_BUS,
 112    .instance_size = sizeof(IPackBus),
 113};
 114
 115static void ipack_register_types(void)
 116{
 117    type_register_static(&ipack_device_info);
 118    type_register_static(&ipack_bus_info);
 119}
 120
 121type_init(ipack_register_types)
 122