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-rw-r--r--hw/scsi-disk.c29
1 files changed, 28 insertions, 1 deletions
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index a6ef06005e..880cb22eb9 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),