diff options
| author | Jing Liu <liujbjl@linux.vnet.ibm.com> | 2016-02-26 06:46:12 +0100 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2016-07-11 09:48:05 +0200 |
| commit | b804e8a62a25b82637b19aea68ab7d5a7a1ce0fb (patch) | |
| tree | 78ef1b18e392672c49478f47480edae0513a16a7 /hw/s390x/ipl.c | |
| parent | dd70bd0d4cf2e10b0437fc75da50423612871101 (diff) | |
s390x/css: Unplug handler of virtual css bridge
The previous patch moved virtual css bridge and bus out from
virtio-ccw, but kept the direct reference of virtio-ccw specific
unplug function inside css-bridge.c.
To make the virtual css bus and bridge useful for non-virtio devices,
this introduces a common unplug function pointer "unplug" to call
specific virtio-ccw unplug parts. Thus, the tight coupling to
virtio-ccw can be removed.
This unplug pointer is a member of CCWDeviceClass, which is introduced
as an abstract device layer called "ccw-device". This layer is between
DeviceState and specific devices which are plugged in virtual css bus,
like virtio-ccw device. The specific unplug handlers should be assigned
to "unplug" during initialization.
Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com>
Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reviewed-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'hw/s390x/ipl.c')
| -rw-r--r-- | hw/s390x/ipl.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c index a54284c74a..2e2664f22e 100644 --- a/hw/s390x/ipl.c +++ b/hw/s390x/ipl.c @@ -221,12 +221,14 @@ static bool s390_gen_initial_iplb(S390IPLState *ipl) dev_st = get_boot_device(0); if (dev_st) { - VirtioCcwDevice *ccw_dev = (VirtioCcwDevice *) object_dynamic_cast( - OBJECT(qdev_get_parent_bus(dev_st)->parent), + VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) + object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), TYPE_VIRTIO_CCW_DEVICE); SCSIDevice *sd = (SCSIDevice *) object_dynamic_cast(OBJECT(dev_st), TYPE_SCSI_DEVICE); - if (ccw_dev) { + if (virtio_ccw_dev) { + CcwDevice *ccw_dev = CCW_DEVICE(virtio_ccw_dev); + ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); ipl->iplb.blk0_len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); @@ -238,7 +240,7 @@ static bool s390_gen_initial_iplb(S390IPLState *ipl) SCSIBus *bus = scsi_bus_from_device(sd); VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, vdev); - VirtioCcwDevice *ccw = &scsi_ccw->parent_obj; + CcwDevice *ccw_dev = CCW_DEVICE(scsi_ccw); ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); ipl->iplb.blk0_len = @@ -247,8 +249,8 @@ static bool s390_gen_initial_iplb(S390IPLState *ipl) ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); ipl->iplb.scsi.target = cpu_to_be16(sd->id); ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); - ipl->iplb.scsi.devno = cpu_to_be16(ccw->sch->devno); - ipl->iplb.scsi.ssid = ccw->sch->ssid & 3; + ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); + ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; return true; } } |