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 2.1 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 "qemu/error-report.h"
23 #include "qemu/module.h"
24 #include "sysemu/block-backend.h"
25 #include "sysemu/blockdev.h"
26 #include "sysemu/runstate.h"
27 #include "ide-internal.h"
28
29 static char *idebus_get_fw_dev_path(DeviceState *dev);
30 static void idebus_unrealize(BusState *qdev);
31
ide_bus_class_init(ObjectClass * klass,void * data)32 static void ide_bus_class_init(ObjectClass *klass, void *data)
33 {
34 BusClass *k = BUS_CLASS(klass);
35
36 k->get_fw_dev_path = idebus_get_fw_dev_path;
37 k->unrealize = idebus_unrealize;
38 }
39
idebus_unrealize(BusState * bus)40 static void idebus_unrealize(BusState *bus)
41 {
42 IDEBus *ibus = IDE_BUS(bus);
43
44 if (ibus->vmstate) {
45 qemu_del_vm_change_state_handler(ibus->vmstate);
46 }
47 }
48
49 static const TypeInfo ide_bus_info = {
50 .name = TYPE_IDE_BUS,
51 .parent = TYPE_BUS,
52 .instance_size = sizeof(IDEBus),
53 .class_init = ide_bus_class_init,
54 };
55
ide_bus_init(IDEBus * idebus,size_t idebus_size,DeviceState * dev,int bus_id,int max_units)56 void ide_bus_init(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
57 int bus_id, int max_units)
58 {
59 qbus_init(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL);
60 idebus->bus_id = bus_id;
61 idebus->max_units = max_units;
62 }
63
idebus_get_fw_dev_path(DeviceState * dev)64 static char *idebus_get_fw_dev_path(DeviceState *dev)
65 {
66 char path[30];
67
68 snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev),
69 ((IDEBus *)dev->parent_bus)->bus_id);
70
71 return g_strdup(path);
72 }
73
ide_bus_create_drive(IDEBus * bus,int unit,DriveInfo * drive)74 IDEDevice *ide_bus_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
75 {
76 DeviceState *dev;
77
78 dev = qdev_new(drive->media_cd ? "ide-cd" : "ide-hd");
79 qdev_prop_set_uint32(dev, "unit", unit);
80 qdev_prop_set_drive_err(dev, "drive", blk_by_legacy_dinfo(drive),
81 &error_fatal);
82 qdev_realize_and_unref(dev, &bus->qbus, &error_fatal);
83 return DO_UPCAST(IDEDevice, qdev, dev);
84 }
85
ide_get_geometry(BusState * bus,int unit,int16_t * cyls,int8_t * heads,int8_t * secs)86 int ide_get_geometry(BusState *bus, int unit,
87 int16_t *cyls, int8_t *heads, int8_t *secs)
88 {
89 IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
90
91 if (s->drive_kind != IDE_HD || !s->blk) {
92 return -1;
93 }
94
95 *cyls = s->cylinders;
96 *heads = s->heads;
97 *secs = s->sectors;
98 return 0;
99 }
100
ide_get_bios_chs_trans(BusState * bus,int unit)101 int ide_get_bios_chs_trans(BusState *bus, int unit)
102 {
103 return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
104 }
105
ide_bus_register_type(void)106 static void ide_bus_register_type(void)
107 {
108 type_register_static(&ide_bus_info);
109 }
110
111 type_init(ide_bus_register_type)
112