hw/ide/qdev.c

   1 /*
   2  * ide bus support for qdev.
   3  *
   4  * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #include <hw/hw.h>
  20 #include "sysemu.h"
  21 #include "dma.h"
  22
  23 #include <hw/ide/internal.h>
  24
  25 /* --------------------------------- */
  26
  27 static struct BusInfo ide_bus_info = {
  28     .name  = "IDE",
  29     .size  = sizeof(IDEBus),
  30 };
  31
  32 IDEBus *ide_bus_new(DeviceState *dev)
  33 {
  34     IDEBus *idebus;
  35
  36     idebus = FROM_QBUS(IDEBus, qbus_create(&ide_bus_info, dev, NULL));
  37     return idebus;
  38 }
  39
  40 static int ide_qdev_init(DeviceState *qdev, DeviceInfo *base)
  41 {
  42     IDEDevice *dev = DO_UPCAST(IDEDevice, qdev, qdev);
  43     IDEDeviceInfo *info = DO_UPCAST(IDEDeviceInfo, qdev, base);
  44     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  45
  46     if (!dev->dinfo) {
  47         fprintf(stderr, "%s: no drive specified\n", qdev->info->name);
  48         goto err;
  49     }
  50     if (dev->unit == -1) {
  51         dev->unit = bus->master ? 1 : 0;
  52     }
  53     switch (dev->unit) {
  54     case 0:
  55         if (bus->master) {
  56             fprintf(stderr, "ide: tried to assign master twice\n");
  57             goto err;
  58         }
  59         bus->master = dev;
  60         break;
  61     case 1:
  62         if (bus->slave) {
  63             fprintf(stderr, "ide: tried to assign slave twice\n");
  64             goto err;
  65         }
  66         bus->slave = dev;
  67         break;
  68     default:
  69         goto err;
  70     }
  71     return info->init(dev);
  72
  73 err:
  74     return -1;
  75 }
  76
  77 static void ide_qdev_register(IDEDeviceInfo *info)
  78 {
  79     info->qdev.init = ide_qdev_init;
  80     info->qdev.bus_info = &ide_bus_info;
  81     qdev_register(&info->qdev);
  82 }
  83
  84 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
  85 {
  86     DeviceState *dev;
  87
  88     dev = qdev_create(&bus->qbus, "ide-drive");
  89     qdev_prop_set_uint32(dev, "unit", unit);
  90     qdev_prop_set_drive(dev, "drive", drive);
  91     if (qdev_init(dev) != 0)
  92         return NULL;
  93     return DO_UPCAST(IDEDevice, qdev, dev);
  94 }
  95
  96 /* --------------------------------- */
  97
  98 typedef struct IDEDrive {
  99     IDEDevice dev;
 100 } IDEDrive;
 101
 102 static int ide_drive_initfn(IDEDevice *dev)
 103 {
 104     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 105     ide_init_drive(bus->ifs + dev->unit, dev->dinfo);
 106     return 0;
 107 }
 108
 109 static IDEDeviceInfo ide_drive_info = {
 110     .qdev.name  = "ide-drive",
 111     .qdev.size  = sizeof(IDEDrive),
 112     .init       = ide_drive_initfn,
 113     .qdev.props = (Property[]) {
 114         DEFINE_PROP_UINT32("unit", IDEDrive, dev.unit, -1),
 115         DEFINE_PROP_DRIVE("drive", IDEDrive, dev.dinfo),
 116         DEFINE_PROP_END_OF_LIST(),
 117     }
 118 };
 119
 120 static void ide_drive_register(void)
 121 {
 122     ide_qdev_register(&ide_drive_info);
 123 }
 124 device_init(ide_drive_register);