kvm_arch_get_registers() shouldn't be called directly
[qemu.git] / hw / scsi-bus.c
blob16afa0532a8b8b2ddb924f7a7253dce22a066695
1 #include "hw.h"
2 #include "sysemu.h"
3 #include "scsi-disk.h"
4 #include "block.h"
5 #include "qdev.h"
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(),
15 static int next_scsi_bus;
17 /* Create a scsi bus, and attach devices to it. */
18 SCSIBus *scsi_bus_new(DeviceState *host, int tcq, int ndev,
19 scsi_completionfn complete)
21 SCSIBus *bus;
23 bus = FROM_QBUS(SCSIBus, qbus_create(&scsi_bus_info, host, NULL));
24 bus->busnr = next_scsi_bus++;
25 bus->tcq = tcq;
26 bus->ndev = ndev;
27 bus->complete = complete;
28 return bus;
31 static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
33 SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
34 SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base);
35 SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
37 if (dev->id == -1) {
38 for (dev->id = 0; dev->id < bus->ndev; dev->id++) {
39 if (bus->devs[dev->id] == NULL)
40 break;
43 if (dev->id >= bus->ndev) {
44 qemu_error("bad scsi device id: %d\n", dev->id);
45 goto err;
48 if (bus->devs[dev->id]) {
49 bus->devs[dev->id]->info->destroy(bus->devs[dev->id]);
51 bus->devs[dev->id] = dev;
53 dev->info = info;
54 return dev->info->init(dev);
56 err:
57 return -1;
60 void scsi_qdev_register(SCSIDeviceInfo *info)
62 info->qdev.bus_info = &scsi_bus_info;
63 info->qdev.init = scsi_qdev_init;
64 qdev_register(&info->qdev);
67 /* handle legacy '-drive if=scsi,...' cmd line args */
68 SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit)
70 const char *driver;
71 DeviceState *dev;
73 driver = bdrv_is_sg(dinfo->bdrv) ? "scsi-generic" : "scsi-disk";
74 dev = qdev_create(&bus->qbus, driver);
75 qdev_prop_set_uint32(dev, "scsi-id", unit);
76 qdev_prop_set_drive(dev, "drive", dinfo);
77 qdev_init(dev);
78 return DO_UPCAST(SCSIDevice, qdev, dev);
81 void scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
83 DriveInfo *dinfo;
84 int unit;
86 for (unit = 0; unit < MAX_SCSI_DEVS; unit++) {
87 dinfo = drive_get(IF_SCSI, bus->busnr, unit);
88 if (dinfo == NULL) {
89 continue;
91 scsi_bus_legacy_add_drive(bus, dinfo, unit);