hw/nubus/mac-nubus-bridge.c

   1 /*
   2  * QEMU Macintosh Nubus
   3  *
   4  * Copyright (c) 2013-2018 Laurent Vivier <laurent@vivier.eu>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  *
   9  */
  10
  11 #include "qemu/osdep.h"
  12 #include "hw/sysbus.h"
  13 #include "hw/nubus/mac-nubus-bridge.h"
  14
  15
  16 static void mac_nubus_bridge_init(Object *obj)
  17 {
  18     MacNubusBridge *s = MAC_NUBUS_BRIDGE(obj);
  19     NubusBridge *nb = NUBUS_BRIDGE(obj);
  20     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
  21     NubusBus *bus = &nb->bus;
  22
  23     /* Macintosh only has slots 0x9 to 0xe available */
  24     bus->slot_available_mask = MAKE_64BIT_MASK(MAC_NUBUS_FIRST_SLOT,
  25                                                MAC_NUBUS_SLOT_NB);
  26
  27     /* Aliases for slots 0x9 to 0xe */
  28     memory_region_init_alias(&s->super_slot_alias, obj, "super-slot-alias",
  29                              &bus->nubus_mr,
  30                              MAC_NUBUS_FIRST_SLOT * NUBUS_SUPER_SLOT_SIZE,
  31                              MAC_NUBUS_SLOT_NB * NUBUS_SUPER_SLOT_SIZE);
  32
  33     memory_region_init_alias(&s->slot_alias, obj, "slot-alias",
  34                              &bus->nubus_mr,
  35                              NUBUS_SLOT_BASE +
  36                              MAC_NUBUS_FIRST_SLOT * NUBUS_SLOT_SIZE,
  37                              MAC_NUBUS_SLOT_NB * NUBUS_SLOT_SIZE);
  38
  39     sysbus_init_mmio(sbd, &s->super_slot_alias);
  40     sysbus_init_mmio(sbd, &s->slot_alias);
  41 }
  42
  43 static void mac_nubus_bridge_class_init(ObjectClass *klass, void *data)
  44 {
  45     DeviceClass *dc = DEVICE_CLASS(klass);
  46
  47     dc->desc = "Nubus bridge";
  48 }
  49
  50 static const TypeInfo mac_nubus_bridge_info = {
  51     .name          = TYPE_MAC_NUBUS_BRIDGE,
  52     .parent        = TYPE_NUBUS_BRIDGE,
  53     .instance_init = mac_nubus_bridge_init,
  54     .instance_size = sizeof(MacNubusBridge),
  55     .class_init    = mac_nubus_bridge_class_init,
  56 };
  57
  58 static void mac_nubus_bridge_register_types(void)
  59 {
  60     type_register_static(&mac_nubus_bridge_info);
  61 }
  62
  63 type_init(mac_nubus_bridge_register_types)