diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2011-09-13 16:26:06 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-10-28 19:25:50 +0200 |
| commit | 8a9c16f69e3ecbcc6e6bc068012986b87412c876 (patch) | |
| tree | 0bed1484dc690d5fa8d0ccf6bde5a704b9404ae1 /hw/scsi-disk.c | |
| parent | 3653d8c40e04d78eb6b5b069522daf7cc72d4f06 (diff) | |
scsi-disk: report media changed via unit attention sense codes
Building on the previous patch, this one adds a media change callback
to scsi-disk.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw/scsi-disk.c')
| -rw-r--r-- | hw/scsi-disk.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index a6ef06005..880cb22eb 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -71,6 +71,7 @@ struct SCSIDiskState int cluster_size; uint32_t removable; uint64_t max_lba; + bool media_changed; QEMUBH *bh; char *version; char *serial; @@ -1198,7 +1199,21 @@ static void scsi_destroy(SCSIDevice *dev) static void scsi_cd_change_media_cb(void *opaque, bool load) { - ((SCSIDiskState *)opaque)->tray_open = !load; + SCSIDiskState *s = opaque; + + /* + * When a CD gets changed, we have to report an ejected state and + * then a loaded state to guests so that they detect tray + * open/close and media change events. Guests that do not use + * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close + * states rely on this behavior. + * + * media_changed governs the state machine used for unit attention + * report. media_event is used by GET EVENT STATUS NOTIFICATION. + */ + s->media_changed = load; + s->tray_open = !load; + s->qdev.unit_attention = SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM); } static bool scsi_cd_is_tray_open(void *opaque) @@ -1217,6 +1232,15 @@ static const BlockDevOps scsi_cd_block_ops = { .is_medium_locked = scsi_cd_is_medium_locked, }; +static void scsi_disk_unit_attention_reported(SCSIDevice *dev) +{ + SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); + if (s->media_changed) { + s->media_changed = false; + s->qdev.unit_attention = SENSE_CODE(MEDIUM_CHANGED); + } +} + static int scsi_initfn(SCSIDevice *dev, uint8_t scsi_type) { SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); @@ -1329,6 +1353,7 @@ static SCSIDeviceInfo scsi_disk_info[] = { .init = scsi_hd_initfn, .destroy = scsi_destroy, .alloc_req = scsi_new_request, + .unit_attention_reported = scsi_disk_unit_attention_reported, .qdev.props = (Property[]) { DEFINE_SCSI_DISK_PROPERTIES(), DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false), @@ -1343,6 +1368,7 @@ static SCSIDeviceInfo scsi_disk_info[] = { .init = scsi_cd_initfn, .destroy = scsi_destroy, .alloc_req = scsi_new_request, + .unit_attention_reported = scsi_disk_unit_attention_reported, .qdev.props = (Property[]) { DEFINE_SCSI_DISK_PROPERTIES(), DEFINE_PROP_END_OF_LIST(), @@ -1356,6 +1382,7 @@ static SCSIDeviceInfo scsi_disk_info[] = { .init = scsi_disk_initfn, .destroy = scsi_destroy, .alloc_req = scsi_new_request, + .unit_attention_reported = scsi_disk_unit_attention_reported, .qdev.props = (Property[]) { DEFINE_SCSI_DISK_PROPERTIES(), DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false), |