xref: /openbmc/qemu/hw/ide/ide-dev.c (revision 19f9c044)
1  /*
2   * IDE device functions
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 2.1 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  
20  #include "qemu/osdep.h"
21  #include "qapi/error.h"
22  #include "qapi/qapi-types-block.h"
23  #include "qemu/error-report.h"
24  #include "qemu/module.h"
25  #include "hw/ide/ide-dev.h"
26  #include "sysemu/block-backend.h"
27  #include "sysemu/blockdev.h"
28  #include "sysemu/sysemu.h"
29  #include "qapi/visitor.h"
30  #include "ide-internal.h"
31  
32  static Property ide_props[] = {
33      DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1),
34      DEFINE_PROP_BOOL("win2k-install-hack", IDEDevice, win2k_install_hack, false),
35      DEFINE_PROP_END_OF_LIST(),
36  };
37  
38  static void ide_qdev_realize(DeviceState *qdev, Error **errp)
39  {
40      IDEDevice *dev = IDE_DEVICE(qdev);
41      IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
42      IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
43  
44      if (dev->unit == -1) {
45          dev->unit = bus->master ? 1 : 0;
46      }
47  
48      if (dev->unit >= bus->max_units) {
49          error_setg(errp, "Can't create IDE unit %d, bus supports only %d units",
50                       dev->unit, bus->max_units);
51          return;
52      }
53  
54      switch (dev->unit) {
55      case 0:
56          if (bus->master) {
57              error_setg(errp, "IDE unit %d is in use", dev->unit);
58              return;
59          }
60          bus->master = dev;
61          break;
62      case 1:
63          if (bus->slave) {
64              error_setg(errp, "IDE unit %d is in use", dev->unit);
65              return;
66          }
67          bus->slave = dev;
68          break;
69      default:
70          error_setg(errp, "Invalid IDE unit %d", dev->unit);
71          return;
72      }
73      dc->realize(dev, errp);
74  }
75  
76  void ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind, Error **errp)
77  {
78      IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
79      IDEState *s = bus->ifs + dev->unit;
80      int ret;
81  
82      if (!dev->conf.blk) {
83          if (kind != IDE_CD) {
84              error_setg(errp, "No drive specified");
85              return;
86          } else {
87              /* Anonymous BlockBackend for an empty drive */
88              dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL);
89              ret = blk_attach_dev(dev->conf.blk, &dev->qdev);
90              assert(ret == 0);
91          }
92      }
93  
94      if (dev->conf.discard_granularity == -1) {
95          dev->conf.discard_granularity = 512;
96      } else if (dev->conf.discard_granularity &&
97                 dev->conf.discard_granularity != 512) {
98          error_setg(errp, "discard_granularity must be 512 for ide");
99          return;
100      }
101  
102      if (!blkconf_blocksizes(&dev->conf, errp)) {
103          return;
104      }
105  
106      if (dev->conf.logical_block_size != 512) {
107          error_setg(errp, "logical_block_size must be 512 for IDE");
108          return;
109      }
110  
111      if (kind != IDE_CD) {
112          if (!blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255,
113                                errp)) {
114              return;
115          }
116      }
117      if (!blkconf_apply_backend_options(&dev->conf, kind == IDE_CD,
118                                         kind != IDE_CD, errp)) {
119          return;
120      }
121  
122      if (ide_init_drive(s, dev, kind, errp) < 0) {
123          return;
124      }
125  
126      if (!dev->version) {
127          dev->version = g_strdup(s->version);
128      }
129      if (!dev->serial) {
130          dev->serial = g_strdup(s->drive_serial_str);
131      }
132  
133      add_boot_device_path(dev->conf.bootindex, &dev->qdev,
134                           dev->unit ? "/disk@1" : "/disk@0");
135  
136      add_boot_device_lchs(&dev->qdev, dev->unit ? "/disk@1" : "/disk@0",
137                           dev->conf.lcyls,
138                           dev->conf.lheads,
139                           dev->conf.lsecs);
140  }
141  
142  static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
143                                    void *opaque, Error **errp)
144  {
145      IDEDevice *d = IDE_DEVICE(obj);
146  
147      visit_type_int32(v, name, &d->conf.bootindex, errp);
148  }
149  
150  static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name,
151                                    void *opaque, Error **errp)
152  {
153      IDEDevice *d = IDE_DEVICE(obj);
154      int32_t boot_index;
155      Error *local_err = NULL;
156  
157      if (!visit_type_int32(v, name, &boot_index, errp)) {
158          return;
159      }
160      /* check whether bootindex is present in fw_boot_order list  */
161      check_boot_index(boot_index, &local_err);
162      if (local_err) {
163          goto out;
164      }
165      /* change bootindex to a new one */
166      d->conf.bootindex = boot_index;
167  
168      if (d->unit != -1) {
169          add_boot_device_path(d->conf.bootindex, &d->qdev,
170                               d->unit ? "/disk@1" : "/disk@0");
171      }
172  out:
173      error_propagate(errp, local_err);
174  }
175  
176  static void ide_dev_instance_init(Object *obj)
177  {
178      object_property_add(obj, "bootindex", "int32",
179                          ide_dev_get_bootindex,
180                          ide_dev_set_bootindex, NULL, NULL);
181      object_property_set_int(obj, "bootindex", -1, NULL);
182  }
183  
184  static void ide_hd_realize(IDEDevice *dev, Error **errp)
185  {
186      ide_dev_initfn(dev, IDE_HD, errp);
187  }
188  
189  static void ide_cd_realize(IDEDevice *dev, Error **errp)
190  {
191      ide_dev_initfn(dev, IDE_CD, errp);
192  }
193  
194  static Property ide_hd_properties[] = {
195      DEFINE_IDE_DEV_PROPERTIES(),
196      DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
197      DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
198                  IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
199      DEFINE_PROP_UINT16("rotation_rate", IDEDrive, dev.rotation_rate, 0),
200      DEFINE_PROP_END_OF_LIST(),
201  };
202  
203  static void ide_hd_class_init(ObjectClass *klass, void *data)
204  {
205      DeviceClass *dc = DEVICE_CLASS(klass);
206      IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
207  
208      k->realize  = ide_hd_realize;
209      dc->fw_name = "drive";
210      dc->desc    = "virtual IDE disk";
211      device_class_set_props(dc, ide_hd_properties);
212  }
213  
214  static const TypeInfo ide_hd_info = {
215      .name          = "ide-hd",
216      .parent        = TYPE_IDE_DEVICE,
217      .instance_size = sizeof(IDEDrive),
218      .class_init    = ide_hd_class_init,
219  };
220  
221  static Property ide_cd_properties[] = {
222      DEFINE_IDE_DEV_PROPERTIES(),
223      DEFINE_PROP_END_OF_LIST(),
224  };
225  
226  static void ide_cd_class_init(ObjectClass *klass, void *data)
227  {
228      DeviceClass *dc = DEVICE_CLASS(klass);
229      IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
230  
231      k->realize  = ide_cd_realize;
232      dc->fw_name = "drive";
233      dc->desc    = "virtual IDE CD-ROM";
234      device_class_set_props(dc, ide_cd_properties);
235  }
236  
237  static const TypeInfo ide_cd_info = {
238      .name          = "ide-cd",
239      .parent        = TYPE_IDE_DEVICE,
240      .instance_size = sizeof(IDEDrive),
241      .class_init    = ide_cd_class_init,
242  };
243  
244  static void ide_device_class_init(ObjectClass *klass, void *data)
245  {
246      DeviceClass *k = DEVICE_CLASS(klass);
247      k->realize = ide_qdev_realize;
248      set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
249      k->bus_type = TYPE_IDE_BUS;
250      device_class_set_props(k, ide_props);
251  }
252  
253  static const TypeInfo ide_device_type_info = {
254      .name = TYPE_IDE_DEVICE,
255      .parent = TYPE_DEVICE,
256      .instance_size = sizeof(IDEDevice),
257      .abstract = true,
258      .class_size = sizeof(IDEDeviceClass),
259      .class_init = ide_device_class_init,
260      .instance_init = ide_dev_instance_init,
261  };
262  
263  static void ide_register_types(void)
264  {
265      type_register_static(&ide_hd_info);
266      type_register_static(&ide_cd_info);
267      type_register_static(&ide_device_type_info);
268  }
269  
270  type_init(ide_register_types)
271