xref: /illumos-kvm-cmd/hw/ide/qdev.c (revision 68396ea9)
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 
ide_bus_new(IDEBus * idebus,DeviceState * dev,int bus_id)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 
idebus_get_fw_dev_path(DeviceState * dev)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 
ide_qdev_init(DeviceState * qdev,DeviceInfo * base)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 
ide_qdev_register(IDEDeviceInfo * info)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 
ide_create_drive(IDEBus * bus,int unit,DriveInfo * drive)97 IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
98 {
99     DeviceState *dev;
100 
101     dev = qdev_create(&bus->qbus, "ide-drive");
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 
ide_get_bs(BlockDriverState * bs[],BusState * qbus)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 
ide_drive_initfn(IDEDevice * dev)121 static int ide_drive_initfn(IDEDevice *dev)
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, 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 IDEDeviceInfo ide_drive_info = {
155     .qdev.name  = "ide-drive",
156     .qdev.fw_name  = "drive",
157     .qdev.size  = sizeof(IDEDrive),
158     .init       = ide_drive_initfn,
159     .qdev.props = (Property[]) {
160         DEFINE_PROP_UINT32("unit", IDEDrive, dev.unit, -1),
161         DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),
162         DEFINE_PROP_STRING("ver",  IDEDrive, dev.version),
163         DEFINE_PROP_STRING("serial",  IDEDrive, dev.serial),
164         DEFINE_PROP_END_OF_LIST(),
165     }
166 };
167 
ide_drive_register(void)168 static void ide_drive_register(void)
169 {
170     ide_qdev_register(&ide_drive_info);
171 }
172 device_init(ide_drive_register);
173