hw/char/ipack.c

   1 /*
   2  * QEMU IndustryPack emulation
   3  *
   4  * Copyright (C) 2012 Igalia, S.L.
   5  * Author: Alberto Garcia <agarcia@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 "ipack.h"
  12
  13 IPackDevice *ipack_device_find(IPackBus *bus, int32_t slot)
  14 {
  15     BusChild *kid;
  16
  17     QTAILQ_FOREACH(kid, &BUS(bus)->children, sibling) {
  18         DeviceState *qdev = kid->child;
  19         IPackDevice *ip = IPACK_DEVICE(qdev);
  20         if (ip->slot == slot) {
  21             return ip;
  22         }
  23     }
  24     return NULL;
  25 }
  26
  27 void ipack_bus_new_inplace(IPackBus *bus, size_t bus_size,
  28                            DeviceState *parent,
  29                            const char *name, uint8_t n_slots,
  30                            qemu_irq_handler handler)
  31 {
  32     qbus_create_inplace(bus, bus_size, TYPE_IPACK_BUS, parent, name);
  33     bus->n_slots = n_slots;
  34     bus->set_irq = handler;
  35 }
  36
  37 static int ipack_device_dev_init(DeviceState *qdev)
  38 {
  39     IPackBus *bus = IPACK_BUS(qdev_get_parent_bus(qdev));
  40     IPackDevice *dev = IPACK_DEVICE(qdev);
  41     IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev);
  42
  43     if (dev->slot < 0) {
  44         dev->slot = bus->free_slot;
  45     }
  46     if (dev->slot >= bus->n_slots) {
  47         return -1;
  48     }
  49     bus->free_slot = dev->slot + 1;
  50
  51     dev->irq = qemu_allocate_irqs(bus->set_irq, dev, 2);
  52
  53     return k->init(dev);
  54 }
  55
  56 static int ipack_device_dev_exit(DeviceState *qdev)
  57 {
  58     IPackDevice *dev = IPACK_DEVICE(qdev);
  59     IPackDeviceClass *k = IPACK_DEVICE_GET_CLASS(dev);
  60
  61     if (k->exit) {
  62         k->exit(dev);
  63     }
  64
  65     qemu_free_irqs(dev->irq);
  66
  67     return 0;
  68 }
  69
  70 static Property ipack_device_props[] = {
  71     DEFINE_PROP_INT32("slot", IPackDevice, slot, -1),
  72     DEFINE_PROP_END_OF_LIST()
  73 };
  74
  75 static void ipack_device_class_init(ObjectClass *klass, void *data)
  76 {
  77     DeviceClass *k = DEVICE_CLASS(klass);
  78     set_bit(DEVICE_CATEGORY_INPUT, k->categories);
  79     k->bus_type = TYPE_IPACK_BUS;
  80     k->init = ipack_device_dev_init;
  81     k->exit = ipack_device_dev_exit;
  82     k->props = ipack_device_props;
  83 }
  84
  85 const VMStateDescription vmstate_ipack_device = {
  86     .name = "ipack_device",
  87     .version_id = 1,
  88     .minimum_version_id = 1,
  89     .minimum_version_id_old = 1,
  90     .fields      = (VMStateField[]) {
  91         VMSTATE_INT32(slot, IPackDevice),
  92         VMSTATE_END_OF_LIST()
  93     }
  94 };
  95
  96 static const TypeInfo ipack_device_info = {
  97     .name          = TYPE_IPACK_DEVICE,
  98     .parent        = TYPE_DEVICE,
  99     .instance_size = sizeof(IPackDevice),
 100     .class_size    = sizeof(IPackDeviceClass),
 101     .class_init    = ipack_device_class_init,
 102     .abstract      = true,
 103 };
 104
 105 static const TypeInfo ipack_bus_info = {
 106     .name = TYPE_IPACK_BUS,
 107     .parent = TYPE_BUS,
 108     .instance_size = sizeof(IPackBus),
 109 };
 110
 111 static void ipack_register_types(void)
 112 {
 113     type_register_static(&ipack_device_info);
 114     type_register_static(&ipack_bus_info);
 115 }
 116
 117 type_init(ipack_register_types)