root / hw / scsi-bus.c @ 3f66aa9c
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#include "hw.h" |
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#include "sysemu.h" |
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#include "scsi-disk.h" |
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#include "block.h" |
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#include "qdev.h" |
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|
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static struct BusInfo scsi_bus_info = { |
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.name = "SCSI",
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.size = sizeof(SCSIBus),
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.props = (Property[]) { |
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DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), |
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DEFINE_PROP_END_OF_LIST(), |
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}, |
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}; |
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static int next_scsi_bus; |
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|
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/* Create a scsi bus, and attach devices to it. */
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void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev, |
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scsi_completionfn complete) |
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{ |
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qbus_create_inplace(&bus->qbus, &scsi_bus_info, host, NULL);
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bus->busnr = next_scsi_bus++; |
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bus->tcq = tcq; |
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bus->ndev = ndev; |
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bus->complete = complete; |
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bus->qbus.allow_hotplug = 1;
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} |
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|
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static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base) |
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{ |
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SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); |
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SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base); |
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SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
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int rc = -1; |
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|
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if (dev->id == -1) { |
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for (dev->id = 0; dev->id < bus->ndev; dev->id++) { |
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if (bus->devs[dev->id] == NULL) |
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break;
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} |
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} |
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if (dev->id >= bus->ndev) {
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qemu_error("bad scsi device id: %d\n", dev->id);
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goto err;
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} |
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|
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if (bus->devs[dev->id]) {
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qdev_free(&bus->devs[dev->id]->qdev); |
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} |
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bus->devs[dev->id] = dev; |
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|
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dev->info = info; |
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rc = dev->info->init(dev); |
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if (rc != 0) { |
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bus->devs[dev->id] = NULL;
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} |
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|
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err:
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return rc;
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} |
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|
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static int scsi_qdev_exit(DeviceState *qdev) |
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{ |
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SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); |
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SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
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|
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assert(bus->devs[dev->id] != NULL);
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if (bus->devs[dev->id]->info->destroy) {
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bus->devs[dev->id]->info->destroy(bus->devs[dev->id]); |
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} |
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bus->devs[dev->id] = NULL;
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return 0; |
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} |
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|
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void scsi_qdev_register(SCSIDeviceInfo *info)
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{ |
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info->qdev.bus_info = &scsi_bus_info; |
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info->qdev.init = scsi_qdev_init; |
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info->qdev.unplug = qdev_simple_unplug_cb; |
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info->qdev.exit = scsi_qdev_exit; |
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qdev_register(&info->qdev); |
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} |
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|
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/* handle legacy '-drive if=scsi,...' cmd line args */
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/* FIXME callers should check for failure, but don't */
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SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, DriveInfo *dinfo, int unit)
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{ |
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const char *driver; |
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DeviceState *dev; |
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|
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driver = bdrv_is_sg(dinfo->bdrv) ? "scsi-generic" : "scsi-disk"; |
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dev = qdev_create(&bus->qbus, driver); |
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qdev_prop_set_uint32(dev, "scsi-id", unit);
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qdev_prop_set_drive(dev, "drive", dinfo);
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if (qdev_init(dev) < 0) |
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return NULL; |
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return DO_UPCAST(SCSIDevice, qdev, dev);
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} |
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|
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void scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
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{ |
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DriveInfo *dinfo; |
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int unit;
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|
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for (unit = 0; unit < MAX_SCSI_DEVS; unit++) { |
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dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
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if (dinfo == NULL) { |
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continue;
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} |
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scsi_bus_legacy_add_drive(bus, dinfo, unit); |
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} |
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} |