]>
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 | } | |
27 | ||
28 | static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base) | |
29 | { | |
30 | SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); | |
31 | SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base); | |
32 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
33 | int rc = -1; | |
34 | ||
35 | if (dev->id == -1) { | |
36 | for (dev->id = 0; dev->id < bus->ndev; dev->id++) { | |
37 | if (bus->devs[dev->id] == NULL) | |
38 | break; | |
39 | } | |
40 | } | |
41 | if (dev->id >= bus->ndev) { | |
42 | qemu_error("bad scsi device id: %d\n", dev->id); | |
43 | goto err; | |
44 | } | |
45 | ||
46 | if (bus->devs[dev->id]) { | |
47 | qdev_free(&bus->devs[dev->id]->qdev); | |
48 | } | |
49 | bus->devs[dev->id] = dev; | |
50 | ||
51 | dev->info = info; | |
52 | rc = dev->info->init(dev); | |
53 | if (rc != 0) { | |
54 | bus->devs[dev->id] = NULL; | |
55 | } | |
56 | ||
57 | err: | |
58 | return rc; | |
59 | } | |
60 | ||
61 | static int scsi_qdev_exit(DeviceState *qdev) | |
62 | { | |
63 | SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); | |
64 | SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); | |
65 | ||
66 | assert(bus->devs[dev->id] != NULL); | |
67 | if (bus->devs[dev->id]->info->destroy) { | |
68 | bus->devs[dev->id]->info->destroy(bus->devs[dev->id]); | |
69 | } | |
70 | bus->devs[dev->id] = NULL; | |
71 | return 0; | |
72 | } | |
73 | ||
74 | void scsi_qdev_register(SCSIDeviceInfo *info) | |
75 | { | |
76 | info->qdev.bus_info = &scsi_bus_info; | |
77 | info->qdev.init = scsi_qdev_init; | |
78 | info->qdev.exit = scsi_qdev_exit; | |
79 | qdev_register(&info->qdev); | |
80 | } | |
81 | ||
82 | /* handle legacy '-drive if=scsi,...' cmd line args */ | |
83 | SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit) | |
84 | { | |
85 | const char *driver; | |
86 | DeviceState *dev; | |
87 | ||
88 | driver = bdrv_is_sg(dinfo->bdrv) ? "scsi-generic" : "scsi-disk"; | |
89 | dev = qdev_create(&bus->qbus, driver); | |
90 | qdev_prop_set_uint32(dev, "scsi-id", unit); | |
91 | qdev_prop_set_drive(dev, "drive", dinfo); | |
92 | qdev_init(dev); | |
93 | return DO_UPCAST(SCSIDevice, qdev, dev); | |
94 | } | |
95 | ||
96 | void scsi_bus_legacy_handle_cmdline(SCSIBus *bus) | |
97 | { | |
98 | DriveInfo *dinfo; | |
99 | int unit; | |
100 | ||
101 | for (unit = 0; unit < MAX_SCSI_DEVS; unit++) { | |
102 | dinfo = drive_get(IF_SCSI, bus->busnr, unit); | |
103 | if (dinfo == NULL) { | |
104 | continue; | |
105 | } | |
106 | scsi_bus_legacy_add_drive(bus, dinfo, unit); | |
107 | } | |
108 | } |