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 void ide_bus_new(IDEBus *idebus, DeviceState *dev)
  33 {
  34     qbus_create_inplace(&idebus->qbus, &ide_bus_info, dev, NULL);
  35 }
  36
  37 static int ide_qdev_init(DeviceState *qdev, DeviceInfo *base)
  38 {
  39     IDEDevice *dev = DO_UPCAST(IDEDevice, qdev, qdev);
  40     IDEDeviceInfo *info = DO_UPCAST(IDEDeviceInfo, qdev, base);
  41     IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
  42
  43     if (!dev->dinfo) {
  44         fprintf(stderr, "%s: no drive specified\n", qdev->info->name);
  45         goto err;
  46     }
  47     if (dev->unit == -1) {
  48         dev->unit = bus->master ? 1 : 0;
  49     }
  50     switch (dev->unit) {
  51     case 0:
  52         if (bus->master) {
  53             fprintf(stderr, "ide: tried to assign master twice\n");
  54             goto err;
  55         }
  56         bus->master = dev;
  57         break;
  58     case 1:
  59         if (bus->slave) {
  60             fprintf(stderr, "ide: tried to assign slave twice\n");
  61             goto err;
  62         }
  63         bus->slave = dev;
  64         break;
  65     default:
  66         goto err;
  67     }
  68     return info->init(dev);
  69
  70 err:
  71     return -1;
  72 }
  73
  74 static void ide_qdev_register(IDEDeviceInfo *info)
  75 {
  76     info->qdev.init = ide_qdev_init;
  77     info->qdev.bus_info = &ide_bus_info;
  78     qdev_register(&info->qdev);
  79 }
  80
  81 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
  82 {
  83     DeviceState *dev;
  84
  85     dev = qdev_create(&bus->qbus, "ide-drive");
  86     qdev_prop_set_uint32(dev, "unit", unit);
  87     qdev_prop_set_drive(dev, "drive", drive);
  88     if (qdev_init(dev) < 0)
  89         return NULL;
  90     return DO_UPCAST(IDEDevice, qdev, dev);
  91 }
  92
  93 /* --------------------------------- */
  94
  95 typedef struct IDEDrive {
  96     IDEDevice dev;
  97 } IDEDrive;
  98
  99 static int ide_drive_initfn(IDEDevice *dev)
 100 {
 101     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
 102     ide_init_drive(bus->ifs + dev->unit, dev->dinfo);
 103     return 0;
 104 }
 105
 106 static IDEDeviceInfo ide_drive_info = {
 107     .qdev.name  = "ide-drive",
 108     .qdev.size  = sizeof(IDEDrive),
 109     .init       = ide_drive_initfn,
 110     .qdev.props = (Property[]) {
 111         DEFINE_PROP_UINT32("unit", IDEDrive, dev.unit, -1),
 112         DEFINE_PROP_DRIVE("drive", IDEDrive, dev.dinfo),
 113         DEFINE_PROP_END_OF_LIST(),
 114     }
 115 };
 116
 117 static void ide_drive_register(void)
 118 {
 119     ide_qdev_register(&ide_drive_info);
 120 }
 121 device_init(ide_drive_register);