d52affa7f6
* Add SCSIBus. * Add SCSIDeviceInfo, move device callbacks here. * add qdev/scsi helper functions. * convert drivers. Adding scsi disks via -device works now, i.e. you can do: -drive id=sda,if=none,... -device lsi -device scsi-disk,drive=sda legacy command lines (-drive if=scsi,...) continue to work. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
#include "hw.h"
|
|
#include "sysemu.h"
|
|
#include "scsi-disk.h"
|
|
#include "block.h"
|
|
#include "qdev.h"
|
|
|
|
static struct BusInfo scsi_bus_info = {
|
|
.name = "SCSI",
|
|
.size = sizeof(SCSIBus),
|
|
.props = (Property[]) {
|
|
DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
},
|
|
};
|
|
static int next_scsi_bus;
|
|
|
|
/* Create a scsi bus, and attach devices to it. */
|
|
SCSIBus *scsi_bus_new(DeviceState *host, int tcq, int ndev,
|
|
scsi_completionfn complete)
|
|
{
|
|
SCSIBus *bus;
|
|
|
|
bus = FROM_QBUS(SCSIBus, qbus_create(&scsi_bus_info, host, NULL));
|
|
bus->busnr = next_scsi_bus++;
|
|
bus->tcq = tcq;
|
|
bus->ndev = ndev;
|
|
bus->complete = complete;
|
|
return bus;
|
|
}
|
|
|
|
static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
|
|
{
|
|
SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
|
|
SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base);
|
|
SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
|
|
|
|
if (dev->id == -1) {
|
|
for (dev->id = 0; dev->id < bus->ndev; dev->id++) {
|
|
if (bus->devs[dev->id] == NULL)
|
|
break;
|
|
}
|
|
}
|
|
if (dev->id >= bus->ndev) {
|
|
qemu_error("bad scsi device id: %d\n", dev->id);
|
|
goto err;
|
|
}
|
|
|
|
if (bus->devs[dev->id]) {
|
|
bus->devs[dev->id]->info->destroy(bus->devs[dev->id]);
|
|
}
|
|
bus->devs[dev->id] = dev;
|
|
|
|
dev->info = info;
|
|
return dev->info->init(dev);
|
|
|
|
err:
|
|
return -1;
|
|
}
|
|
|
|
void scsi_qdev_register(SCSIDeviceInfo *info)
|
|
{
|
|
info->qdev.bus_info = &scsi_bus_info;
|
|
info->qdev.init = scsi_qdev_init;
|
|
qdev_register(&info->qdev);
|
|
}
|
|
|
|
/* handle legacy '-drive if=scsi,...' cmd line args */
|
|
SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit)
|
|
{
|
|
const char *driver;
|
|
DeviceState *dev;
|
|
|
|
driver = bdrv_is_sg(dinfo->bdrv) ? "scsi-generic" : "scsi-disk";
|
|
dev = qdev_create(&bus->qbus, driver);
|
|
qdev_prop_set_uint32(dev, "scsi-id", unit);
|
|
qdev_prop_set_drive(dev, "drive", dinfo);
|
|
qdev_init(dev);
|
|
return DO_UPCAST(SCSIDevice, qdev, dev);
|
|
}
|
|
|
|
void scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
|
|
{
|
|
DriveInfo *dinfo;
|
|
int unit;
|
|
|
|
for (unit = 0; unit < MAX_SCSI_DEVS; unit++) {
|
|
dinfo = drive_get(IF_SCSI, bus->busnr, unit);
|
|
if (dinfo == NULL) {
|
|
continue;
|
|
}
|
|
scsi_bus_legacy_add_drive(bus, dinfo, unit);
|
|
}
|
|
}
|