mirror of https://gitee.com/openkylin/qemu.git
scsi-bus: Convert DeviceClass init to realize
Replace "init/destroy" with "realize/unrealize" in SCSIDeviceClass, which has errp as a parameter. So all the implementations now use error_setg instead of error_report for reporting error. Also in scsi_bus_legacy_handle_cmdline, report the error when initializing the if=scsi devices, before returning it, because in the callee, error_report is changed to error_setg. And the callers don't have the right locations (e.g. "-drive if=scsi"). Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng
Paolo Bonzini
parent
5ff5efb46c
commit
a818a4b69d
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@ -19,6 +19,7 @@
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#include "hw/pci/pci.h"
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#include "hw/scsi/scsi.h"
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#include "sysemu/dma.h"
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#include "qemu/error-report.h"
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//#define DEBUG_LSI
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//#define DEBUG_LSI_REG
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@ -36,20 +36,19 @@ static const TypeInfo scsi_bus_info = {
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};
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static int next_scsi_bus;
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static int scsi_device_init(SCSIDevice *s)
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static void scsi_device_realize(SCSIDevice *s, Error **errp)
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{
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SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
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if (sc->init) {
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return sc->init(s);
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if (sc->realize) {
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sc->realize(s, errp);
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}
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return 0;
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}
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static void scsi_device_destroy(SCSIDevice *s)
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static void scsi_device_unrealize(SCSIDevice *s, Error **errp)
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{
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SCSIDeviceClass *sc = SCSI_DEVICE_GET_CLASS(s);
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if (sc->destroy) {
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sc->destroy(s);
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if (sc->unrealize) {
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sc->unrealize(s, errp);
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}
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}
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@ -143,24 +142,24 @@ static void scsi_dma_restart_cb(void *opaque, int running, RunState state)
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}
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}
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static int scsi_qdev_init(DeviceState *qdev)
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static void scsi_qdev_realize(DeviceState *qdev, Error **errp)
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{
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SCSIDevice *dev = SCSI_DEVICE(qdev);
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SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
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SCSIDevice *d;
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int rc = -1;
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Error *local_err = NULL;
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if (dev->channel > bus->info->max_channel) {
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error_report("bad scsi channel id: %d", dev->channel);
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goto err;
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error_setg(errp, "bad scsi channel id: %d", dev->channel);
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return;
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}
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if (dev->id != -1 && dev->id > bus->info->max_target) {
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error_report("bad scsi device id: %d", dev->id);
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goto err;
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error_setg(errp, "bad scsi device id: %d", dev->id);
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return;
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}
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if (dev->lun != -1 && dev->lun > bus->info->max_lun) {
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error_report("bad scsi device lun: %d", dev->lun);
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goto err;
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error_setg(errp, "bad scsi device lun: %d", dev->lun);
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return;
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}
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if (dev->id == -1) {
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@ -172,8 +171,8 @@ static int scsi_qdev_init(DeviceState *qdev)
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d = scsi_device_find(bus, dev->channel, ++id, dev->lun);
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} while (d && d->lun == dev->lun && id < bus->info->max_target);
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if (d && d->lun == dev->lun) {
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error_report("no free target");
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goto err;
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error_setg(errp, "no free target");
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return;
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}
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dev->id = id;
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} else if (dev->lun == -1) {
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@ -182,43 +181,41 @@ static int scsi_qdev_init(DeviceState *qdev)
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d = scsi_device_find(bus, dev->channel, dev->id, ++lun);
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} while (d && d->lun == lun && lun < bus->info->max_lun);
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if (d && d->lun == lun) {
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error_report("no free lun");
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goto err;
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error_setg(errp, "no free lun");
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return;
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}
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dev->lun = lun;
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} else {
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d = scsi_device_find(bus, dev->channel, dev->id, dev->lun);
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assert(d);
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if (d->lun == dev->lun && dev != d) {
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error_report("lun already used by '%s'", d->qdev.id);
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goto err;
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error_setg(errp, "lun already used by '%s'", d->qdev.id);
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return;
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}
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}
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QTAILQ_INIT(&dev->requests);
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rc = scsi_device_init(dev);
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if (rc == 0) {
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dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb,
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dev);
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scsi_device_realize(dev, &local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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dev->vmsentry = qemu_add_vm_change_state_handler(scsi_dma_restart_cb,
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dev);
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if (bus->info->hotplug) {
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bus->info->hotplug(bus, dev);
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}
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err:
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return rc;
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}
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static int scsi_qdev_exit(DeviceState *qdev)
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static void scsi_qdev_unrealize(DeviceState *qdev, Error **errp)
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{
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SCSIDevice *dev = SCSI_DEVICE(qdev);
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if (dev->vmsentry) {
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qemu_del_vm_change_state_handler(dev->vmsentry);
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}
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scsi_device_destroy(dev);
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return 0;
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scsi_device_unrealize(dev, errp);
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}
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/* handle legacy '-drive if=scsi,...' cmd line args */
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@ -273,6 +270,7 @@ void scsi_bus_legacy_handle_cmdline(SCSIBus *bus, Error **errp)
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scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit, false, -1, NULL,
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&err);
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if (err != NULL) {
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error_report("%s", error_get_pretty(err));
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error_propagate(errp, err);
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break;
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}
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@ -1992,11 +1990,11 @@ static void scsi_device_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *k = DEVICE_CLASS(klass);
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set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
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k->bus_type = TYPE_SCSI_BUS;
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k->init = scsi_qdev_init;
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k->unplug = scsi_qdev_unplug;
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k->exit = scsi_qdev_exit;
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k->props = scsi_props;
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k->bus_type = TYPE_SCSI_BUS;
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k->realize = scsi_qdev_realize;
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k->unplug = scsi_qdev_unplug;
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k->unrealize = scsi_qdev_unrealize;
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k->props = scsi_props;
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}
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static const TypeInfo scsi_device_type_info = {
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@ -2151,7 +2151,7 @@ static void scsi_disk_reset(DeviceState *dev)
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s->tray_open = 0;
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}
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static void scsi_destroy(SCSIDevice *dev)
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static void scsi_unrealize(SCSIDevice *dev, Error **errp)
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{
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
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@ -2234,29 +2234,28 @@ static void scsi_disk_unit_attention_reported(SCSIDevice *dev)
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}
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}
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static int scsi_initfn(SCSIDevice *dev)
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static void scsi_realize(SCSIDevice *dev, Error **errp)
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{
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
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Error *err = NULL;
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if (!s->qdev.conf.bs) {
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error_report("drive property not set");
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return -1;
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error_setg(errp, "drive property not set");
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return;
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}
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if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
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!bdrv_is_inserted(s->qdev.conf.bs)) {
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error_report("Device needs media, but drive is empty");
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return -1;
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error_setg(errp, "Device needs media, but drive is empty");
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return;
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}
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blkconf_serial(&s->qdev.conf, &s->serial);
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if (dev->type == TYPE_DISK) {
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blkconf_geometry(&dev->conf, NULL, 65535, 255, 255, &err);
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if (err) {
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error_report("%s", error_get_pretty(err));
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error_free(err);
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return -1;
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error_propagate(errp, err);
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return;
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}
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}
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@ -2273,8 +2272,8 @@ static int scsi_initfn(SCSIDevice *dev)
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}
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if (bdrv_is_sg(s->qdev.conf.bs)) {
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error_report("unwanted /dev/sg*");
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return -1;
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error_setg(errp, "unwanted /dev/sg*");
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return;
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}
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if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
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@ -2287,10 +2286,9 @@ static int scsi_initfn(SCSIDevice *dev)
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bdrv_iostatus_enable(s->qdev.conf.bs);
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add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, NULL);
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return 0;
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}
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static int scsi_hd_initfn(SCSIDevice *dev)
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static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
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{
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
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s->qdev.blocksize = s->qdev.conf.logical_block_size;
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@ -2298,10 +2296,10 @@ static int scsi_hd_initfn(SCSIDevice *dev)
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if (!s->product) {
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s->product = g_strdup("QEMU HARDDISK");
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}
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return scsi_initfn(&s->qdev);
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scsi_realize(&s->qdev, errp);
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}
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static int scsi_cd_initfn(SCSIDevice *dev)
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static void scsi_cd_realize(SCSIDevice *dev, Error **errp)
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{
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
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s->qdev.blocksize = 2048;
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@ -2310,22 +2308,26 @@ static int scsi_cd_initfn(SCSIDevice *dev)
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if (!s->product) {
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s->product = g_strdup("QEMU CD-ROM");
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}
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return scsi_initfn(&s->qdev);
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scsi_realize(&s->qdev, errp);
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}
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static int scsi_disk_initfn(SCSIDevice *dev)
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static void scsi_disk_realize(SCSIDevice *dev, Error **errp)
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{
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DriveInfo *dinfo;
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Error *local_err = NULL;
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if (!dev->conf.bs) {
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return scsi_initfn(dev); /* ... and die there */
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scsi_realize(dev, &local_err);
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assert(local_err);
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error_propagate(errp, local_err);
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return;
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}
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dinfo = drive_get_by_blockdev(dev->conf.bs);
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if (dinfo->media_cd) {
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return scsi_cd_initfn(dev);
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scsi_cd_realize(dev, errp);
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} else {
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return scsi_hd_initfn(dev);
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scsi_hd_realize(dev, errp);
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}
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}
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@ -2457,35 +2459,35 @@ static int get_device_type(SCSIDiskState *s)
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return 0;
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}
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static int scsi_block_initfn(SCSIDevice *dev)
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static void scsi_block_realize(SCSIDevice *dev, Error **errp)
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{
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
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int sg_version;
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int rc;
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if (!s->qdev.conf.bs) {
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error_report("drive property not set");
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return -1;
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error_setg(errp, "drive property not set");
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return;
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}
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/* check we are using a driver managing SG_IO (version 3 and after) */
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rc = bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version);
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if (rc < 0) {
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error_report("cannot get SG_IO version number: %s. "
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error_setg(errp, "cannot get SG_IO version number: %s. "
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"Is this a SCSI device?",
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strerror(-rc));
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return -1;
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return;
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}
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if (sg_version < 30000) {
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error_report("scsi generic interface too old");
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return -1;
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error_setg(errp, "scsi generic interface too old");
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return;
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}
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/* get device type from INQUIRY data */
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rc = get_device_type(s);
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if (rc < 0) {
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error_report("INQUIRY failed");
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return -1;
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error_setg(errp, "INQUIRY failed");
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return;
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}
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/* Make a guess for the block size, we'll fix it when the guest sends.
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@ -2503,7 +2505,7 @@ static int scsi_block_initfn(SCSIDevice *dev)
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*/
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s->features |= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS);
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return scsi_initfn(&s->qdev);
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scsi_realize(&s->qdev, errp);
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}
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static bool scsi_block_is_passthrough(SCSIDiskState *s, uint8_t *buf)
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@ -2626,8 +2628,8 @@ static void scsi_hd_class_initfn(ObjectClass *klass, void *data)
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DeviceClass *dc = DEVICE_CLASS(klass);
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SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
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sc->init = scsi_hd_initfn;
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sc->destroy = scsi_destroy;
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sc->realize = scsi_hd_realize;
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sc->unrealize = scsi_unrealize;
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sc->alloc_req = scsi_new_request;
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sc->unit_attention_reported = scsi_disk_unit_attention_reported;
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dc->fw_name = "disk";
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@ -2657,8 +2659,8 @@ static void scsi_cd_class_initfn(ObjectClass *klass, void *data)
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DeviceClass *dc = DEVICE_CLASS(klass);
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SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
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sc->init = scsi_cd_initfn;
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sc->destroy = scsi_destroy;
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sc->realize = scsi_cd_realize;
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sc->unrealize = scsi_unrealize;
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sc->alloc_req = scsi_new_request;
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sc->unit_attention_reported = scsi_disk_unit_attention_reported;
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dc->fw_name = "disk";
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@ -2687,8 +2689,8 @@ static void scsi_block_class_initfn(ObjectClass *klass, void *data)
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DeviceClass *dc = DEVICE_CLASS(klass);
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SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
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sc->init = scsi_block_initfn;
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sc->destroy = scsi_destroy;
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sc->realize = scsi_block_realize;
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sc->unrealize = scsi_unrealize;
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sc->alloc_req = scsi_block_new_request;
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sc->parse_cdb = scsi_block_parse_cdb;
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dc->fw_name = "disk";
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@ -2725,8 +2727,8 @@ static void scsi_disk_class_initfn(ObjectClass *klass, void *data)
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DeviceClass *dc = DEVICE_CLASS(klass);
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SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
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sc->init = scsi_disk_initfn;
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sc->destroy = scsi_destroy;
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sc->realize = scsi_disk_realize;
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sc->unrealize = scsi_unrealize;
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sc->alloc_req = scsi_new_request;
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sc->unit_attention_reported = scsi_disk_unit_attention_reported;
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dc->fw_name = "disk";
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@ -386,49 +386,49 @@ static void scsi_generic_reset(DeviceState *dev)
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scsi_device_purge_requests(s, SENSE_CODE(RESET));
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}
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static void scsi_destroy(SCSIDevice *s)
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static void scsi_unrealize(SCSIDevice *s, Error **errp)
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{
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scsi_device_purge_requests(s, SENSE_CODE(NO_SENSE));
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blockdev_mark_auto_del(s->conf.bs);
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}
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static int scsi_generic_initfn(SCSIDevice *s)
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static void scsi_generic_realize(SCSIDevice *s, Error **errp)
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{
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int rc;
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int sg_version;
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struct sg_scsi_id scsiid;
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if (!s->conf.bs) {
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error_report("drive property not set");
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return -1;
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error_setg(errp, "drive property not set");
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return;
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}
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if (bdrv_get_on_error(s->conf.bs, 0) != BLOCKDEV_ON_ERROR_ENOSPC) {
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error_report("Device doesn't support drive option werror");
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return -1;
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error_setg(errp, "Device doesn't support drive option werror");
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return;
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}
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if (bdrv_get_on_error(s->conf.bs, 1) != BLOCKDEV_ON_ERROR_REPORT) {
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error_report("Device doesn't support drive option rerror");
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return -1;
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error_setg(errp, "Device doesn't support drive option rerror");
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return;
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}
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/* check we are using a driver managing SG_IO (version 3 and after */
|
||||
rc = bdrv_ioctl(s->conf.bs, SG_GET_VERSION_NUM, &sg_version);
|
||||
if (rc < 0) {
|
||||
error_report("cannot get SG_IO version number: %s. "
|
||||
"Is this a SCSI device?",
|
||||
strerror(-rc));
|
||||
return -1;
|
||||
error_setg(errp, "cannot get SG_IO version number: %s. "
|
||||
"Is this a SCSI device?",
|
||||
strerror(-rc));
|
||||
return;
|
||||
}
|
||||
if (sg_version < 30000) {
|
||||
error_report("scsi generic interface too old");
|
||||
return -1;
|
||||
error_setg(errp, "scsi generic interface too old");
|
||||
return;
|
||||
}
|
||||
|
||||
/* get LUN of the /dev/sg? */
|
||||
if (bdrv_ioctl(s->conf.bs, SG_GET_SCSI_ID, &scsiid)) {
|
||||
error_report("SG_GET_SCSI_ID ioctl failed");
|
||||
return -1;
|
||||
error_setg(errp, "SG_GET_SCSI_ID ioctl failed");
|
||||
return;
|
||||
}
|
||||
|
||||
/* define device state */
|
||||
|
|
@ -460,7 +460,6 @@ static int scsi_generic_initfn(SCSIDevice *s)
|
|||
}
|
||||
|
||||
DPRINTF("block size %d\n", s->blocksize);
|
||||
return 0;
|
||||
}
|
||||
|
||||
const SCSIReqOps scsi_generic_req_ops = {
|
||||
|
|
@ -501,8 +500,8 @@ static void scsi_generic_class_initfn(ObjectClass *klass, void *data)
|
|||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
|
||||
|
||||
sc->init = scsi_generic_initfn;
|
||||
sc->destroy = scsi_destroy;
|
||||
sc->realize = scsi_generic_realize;
|
||||
sc->unrealize = scsi_unrealize;
|
||||
sc->alloc_req = scsi_new_request;
|
||||
sc->parse_cdb = scsi_generic_parse_cdb;
|
||||
dc->fw_name = "disk";
|
||||
|
|
|
|||
|
|
@ -74,8 +74,8 @@ struct SCSIRequest {
|
|||
|
||||
typedef struct SCSIDeviceClass {
|
||||
DeviceClass parent_class;
|
||||
int (*init)(SCSIDevice *dev);
|
||||
void (*destroy)(SCSIDevice *s);
|
||||
void (*realize)(SCSIDevice *dev, Error **errp);
|
||||
void (*unrealize)(SCSIDevice *dev, Error **errp);
|
||||
int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
|
||||
void *hba_private);
|
||||
SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun,
|
||||
|
|
|
|||
|
|
@ -149,13 +149,11 @@ QEMU_PROG: -device ide-hd,drive=disk: Device 'ide-hd' could not be initialized
|
|||
Testing: -drive if=none,id=disk -device lsi53c895a -device scsi-disk,drive=disk
|
||||
QEMU X.Y.Z monitor - type 'help' for more information
|
||||
(qemu) QEMU_PROG: -device scsi-disk,drive=disk: Device needs media, but drive is empty
|
||||
QEMU_PROG: -device scsi-disk,drive=disk: Device initialization failed.
|
||||
QEMU_PROG: -device scsi-disk,drive=disk: Device 'scsi-disk' could not be initialized
|
||||
|
||||
Testing: -drive if=none,id=disk -device lsi53c895a -device scsi-hd,drive=disk
|
||||
QEMU X.Y.Z monitor - type 'help' for more information
|
||||
(qemu) QEMU_PROG: -device scsi-hd,drive=disk: Device needs media, but drive is empty
|
||||
QEMU_PROG: -device scsi-hd,drive=disk: Device initialization failed.
|
||||
QEMU_PROG: -device scsi-hd,drive=disk: Device 'scsi-hd' could not be initialized
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue