blockdev: Store -drive option media in DriveInfo
[qemu.git] / 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 "dma.h"
21 #include "qemu-error.h"
22 #include <hw/ide/internal.h>
23 #include "blockdev.h"
24 #include "sysemu.h"
25
26 /* --------------------------------- */
27
28 static char *idebus_get_fw_dev_path(DeviceState *dev);
29
30 static struct BusInfo ide_bus_info = {
31 .name = "IDE",
32 .size = sizeof(IDEBus),
33 .get_fw_dev_path = idebus_get_fw_dev_path,
34 };
35
36 void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id)
37 {
38 qbus_create_inplace(&idebus->qbus, &ide_bus_info, dev, NULL);
39 idebus->bus_id = bus_id;
40 }
41
42 static char *idebus_get_fw_dev_path(DeviceState *dev)
43 {
44 char path[30];
45
46 snprintf(path, sizeof(path), "%s@%d", qdev_fw_name(dev),
47 ((IDEBus*)dev->parent_bus)->bus_id);
48
49 return strdup(path);
50 }
51
52 static int ide_qdev_init(DeviceState *qdev, DeviceInfo *base)
53 {
54 IDEDevice *dev = DO_UPCAST(IDEDevice, qdev, qdev);
55 IDEDeviceInfo *info = DO_UPCAST(IDEDeviceInfo, qdev, base);
56 IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
57
58 if (!dev->conf.bs) {
59 error_report("No drive specified");
60 goto err;
61 }
62 if (dev->unit == -1) {
63 dev->unit = bus->master ? 1 : 0;
64 }
65 switch (dev->unit) {
66 case 0:
67 if (bus->master) {
68 error_report("IDE unit %d is in use", dev->unit);
69 goto err;
70 }
71 bus->master = dev;
72 break;
73 case 1:
74 if (bus->slave) {
75 error_report("IDE unit %d is in use", dev->unit);
76 goto err;
77 }
78 bus->slave = dev;
79 break;
80 default:
81 error_report("Invalid IDE unit %d", dev->unit);
82 goto err;
83 }
84 return info->init(dev);
85
86 err:
87 return -1;
88 }
89
90 static void ide_qdev_register(IDEDeviceInfo *info)
91 {
92 info->qdev.init = ide_qdev_init;
93 info->qdev.bus_info = &ide_bus_info;
94 qdev_register(&info->qdev);
95 }
96
97 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
98 {
99 DeviceState *dev;
100
101 dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd");
102 qdev_prop_set_uint32(dev, "unit", unit);
103 qdev_prop_set_drive_nofail(dev, "drive", drive->bdrv);
104 qdev_init_nofail(dev);
105 return DO_UPCAST(IDEDevice, qdev, dev);
106 }
107
108 void ide_get_bs(BlockDriverState *bs[], BusState *qbus)
109 {
110 IDEBus *bus = DO_UPCAST(IDEBus, qbus, qbus);
111 bs[0] = bus->master ? bus->master->conf.bs : NULL;
112 bs[1] = bus->slave ? bus->slave->conf.bs : NULL;
113 }
114
115 /* --------------------------------- */
116
117 typedef struct IDEDrive {
118 IDEDevice dev;
119 } IDEDrive;
120
121 static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
122 {
123 IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
124 IDEState *s = bus->ifs + dev->unit;
125 const char *serial;
126 DriveInfo *dinfo;
127
128 serial = dev->serial;
129 if (!serial) {
130 /* try to fall back to value set with legacy -drive serial=... */
131 dinfo = drive_get_by_blockdev(dev->conf.bs);
132 if (*dinfo->serial) {
133 serial = dinfo->serial;
134 }
135 }
136
137 if (ide_init_drive(s, dev->conf.bs, kind, dev->version, serial) < 0) {
138 return -1;
139 }
140
141 if (!dev->version) {
142 dev->version = qemu_strdup(s->version);
143 }
144 if (!dev->serial) {
145 dev->serial = qemu_strdup(s->drive_serial_str);
146 }
147
148 add_boot_device_path(dev->conf.bootindex, &dev->qdev,
149 dev->unit ? "/disk@1" : "/disk@0");
150
151 return 0;
152 }
153
154 static int ide_hd_initfn(IDEDevice *dev)
155 {
156 return ide_dev_initfn(dev, IDE_HD);
157 }
158
159 static int ide_cd_initfn(IDEDevice *dev)
160 {
161 return ide_dev_initfn(dev, IDE_CD);
162 }
163
164 static int ide_drive_initfn(IDEDevice *dev)
165 {
166 DriveInfo *dinfo = drive_get_by_blockdev(dev->conf.bs);
167
168 return ide_dev_initfn(dev, dinfo->media_cd ? IDE_CD : IDE_HD);
169 }
170
171 #define DEFINE_IDE_DEV_PROPERTIES() \
172 DEFINE_PROP_UINT32("unit", IDEDrive, dev.unit, -1), \
173 DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf), \
174 DEFINE_PROP_STRING("ver", IDEDrive, dev.version), \
175 DEFINE_PROP_STRING("serial", IDEDrive, dev.serial)
176
177 static IDEDeviceInfo ide_dev_info[] = {
178 {
179 .qdev.name = "ide-hd",
180 .qdev.fw_name = "drive",
181 .qdev.desc = "virtual IDE disk",
182 .qdev.size = sizeof(IDEDrive),
183 .init = ide_hd_initfn,
184 .qdev.props = (Property[]) {
185 DEFINE_IDE_DEV_PROPERTIES(),
186 DEFINE_PROP_END_OF_LIST(),
187 }
188 },{
189 .qdev.name = "ide-cd",
190 .qdev.fw_name = "drive",
191 .qdev.desc = "virtual IDE CD-ROM",
192 .qdev.size = sizeof(IDEDrive),
193 .init = ide_cd_initfn,
194 .qdev.props = (Property[]) {
195 DEFINE_IDE_DEV_PROPERTIES(),
196 DEFINE_PROP_END_OF_LIST(),
197 }
198 },{
199 .qdev.name = "ide-drive", /* legacy -device ide-drive */
200 .qdev.fw_name = "drive",
201 .qdev.desc = "virtual IDE disk or CD-ROM (legacy)",
202 .qdev.size = sizeof(IDEDrive),
203 .init = ide_drive_initfn,
204 .qdev.props = (Property[]) {
205 DEFINE_IDE_DEV_PROPERTIES(),
206 DEFINE_PROP_END_OF_LIST(),
207 }
208 }
209 };
210
211 static void ide_dev_register(void)
212 {
213 int i;
214
215 for (i = 0; i < ARRAY_SIZE(ide_dev_info); i++) {
216 ide_qdev_register(&ide_dev_info[i]);
217 }
218 }
219 device_init(ide_dev_register);