]>
Commit | Line | Data |
---|---|---|
1 | #include "hw.h" | |
2 | #include "sysemu.h" | |
3 | #include "scsi-disk.h" | |
4 | #include "block.h" | |
5 | #include "qdev.h" | |
6 | ||
7 | static struct BusInfo scsi_bus_info = { | |
8 | .name = "SCSI", | |
9 | .size = sizeof(SCSIBus), | |
10 | .props = (Property[]) { | |
11 | DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), | |
12 | DEFINE_PROP_END_OF_LIST(), | |
13 | }, | |
14 | }; | |
15 | static int next_scsi_bus; | |
16 | ||
17 | /* Create a scsi bus, and attach devices to it. */ | |
18 | void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev, | |
19 | scsi_completionfn complete) | |
20 | { | |
21 | qbus_create_inplace(&bus->qbus, &scsi_bus_info, host, NULL); | |
22 | bus->busnr = next_scsi_bus++; | |
23 | bus->tcq = tcq; | |
24 | bus->ndev = ndev; | |
25 | bus->complete = complete; | |
26 | bus->qbus.allow_hotplug = 1; | |
27 | } | |
28 | ||
29 | static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base) | |
30 | { | |
31 | SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); | |
32 | SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base); | |
33 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
34 | int rc = -1; | |
35 | ||
36 | if (dev->id == -1) { | |
37 | for (dev->id = 0; dev->id < bus->ndev; dev->id++) { | |
38 | if (bus->devs[dev->id] == NULL) | |
39 | break; | |
40 | } | |
41 | } | |
42 | if (dev->id >= bus->ndev) { | |
43 | qemu_error("bad scsi device id: %d\n", dev->id); | |
44 | goto err; | |
45 | } | |
46 | ||
47 | if (bus->devs[dev->id]) { | |
48 | qdev_free(&bus->devs[dev->id]->qdev); | |
49 | } | |
50 | bus->devs[dev->id] = dev; | |
51 | ||
52 | dev->info = info; | |
53 | rc = dev->info->init(dev); | |
54 | if (rc != 0) { | |
55 | bus->devs[dev->id] = NULL; | |
56 | } | |
57 | ||
58 | err: | |
59 | return rc; | |
60 | } | |
61 | ||
62 | static int scsi_qdev_exit(DeviceState *qdev) | |
63 | { | |
64 | SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); | |
65 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
66 | ||
67 | assert(bus->devs[dev->id] != NULL); | |
68 | if (bus->devs[dev->id]->info->destroy) { | |
69 | bus->devs[dev->id]->info->destroy(bus->devs[dev->id]); | |
70 | } | |
71 | bus->devs[dev->id] = NULL; | |
72 | return 0; | |
73 | } | |
74 | ||
75 | void scsi_qdev_register(SCSIDeviceInfo *info) | |
76 | { | |
77 | info->qdev.bus_info = &scsi_bus_info; | |
78 | info->qdev.init = scsi_qdev_init; | |
79 | info->qdev.unplug = qdev_simple_unplug_cb; | |
80 | info->qdev.exit = scsi_qdev_exit; | |
81 | qdev_register(&info->qdev); | |
82 | } | |
83 | ||
84 | /* handle legacy '-drive if=scsi,...' cmd line args */ | |
85 | /* FIXME callers should check for failure, but don't */ | |
86 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit) | |
87 | { | |
88 | const char *driver; | |
89 | DeviceState *dev; | |
90 | ||
91 | driver = bdrv_is_sg(dinfo->bdrv) ? "scsi-generic" : "scsi-disk"; | |
92 | dev = qdev_create(&bus->qbus, driver); | |
93 | qdev_prop_set_uint32(dev, "scsi-id", unit); | |
94 | qdev_prop_set_drive(dev, "drive", dinfo); | |
95 | if (qdev_init(dev) < 0) | |
96 | return NULL; | |
97 | return DO_UPCAST(SCSIDevice, qdev, dev); | |
98 | } | |
99 | ||
100 | void scsi_bus_legacy_handle_cmdline(SCSIBus *bus) | |
101 | { | |
102 | DriveInfo *dinfo; | |
103 | int unit; | |
104 | ||
105 | for (unit = 0; unit < MAX_SCSI_DEVS; unit++) { | |
106 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); | |
107 | if (dinfo == NULL) { | |
108 | continue; | |
109 | } | |
110 | scsi_bus_legacy_add_drive(bus, dinfo, unit); | |
111 | } | |
112 | } |