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authorPaolo Bonzini <pbonzini@redhat.com>2012-08-20 15:23:28 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2012-08-20 15:58:47 +0200
commit07a5298c3067ed63f7d82d8c1a6f479146447289 (patch)
tree42f67b4779c437bc2f5e72d0bdfa064fa3922fb4 /hw
parent1bd075f29ea6d11853475c7c42734595720c3ac6 (diff)
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virtio-scsi: add backwards-compatibility properties for 1.1 and earlier machines
Hotplug and parameter change are new in 1.2, disable them via compat properties for pc-1.1 and earlier. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/pc_piix.c8
-rw-r--r--hw/virtio-scsi.c7
-rw-r--r--hw/virtio-scsi.h9
3 files changed, 16 insertions, 8 deletions
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 0c0096f..a960710 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -360,6 +360,14 @@ static QEMUMachine pc_machine_v1_2 = {
#define PC_COMPAT_1_1 \
{\
+ .driver = "virtio-scsi-pci",\
+ .property = "hotplug",\
+ .value = "off",\
+ },{\
+ .driver = "virtio-scsi-pci",\
+ .property = "param_change",\
+ .value = "off",\
+ },{\
.driver = "VGA",\
.property = "vgamem_mb",\
.value = stringify(8),\
diff --git a/hw/virtio-scsi.c b/hw/virtio-scsi.c
index 5f737ac..c1b47a8 100644
--- a/hw/virtio-scsi.c
+++ b/hw/virtio-scsi.c
@@ -24,11 +24,6 @@
#define VIRTIO_SCSI_MAX_TARGET 255
#define VIRTIO_SCSI_MAX_LUN 16383
-/* Feature Bits */
-#define VIRTIO_SCSI_F_INOUT 0
-#define VIRTIO_SCSI_F_HOTPLUG 1
-#define VIRTIO_SCSI_F_CHANGE 2
-
/* Response codes */
#define VIRTIO_SCSI_S_OK 0
#define VIRTIO_SCSI_S_OVERRUN 1
@@ -561,8 +556,6 @@ static void virtio_scsi_set_config(VirtIODevice *vdev,
static uint32_t virtio_scsi_get_features(VirtIODevice *vdev,
uint32_t requested_features)
{
- requested_features |= (1UL << VIRTIO_SCSI_F_HOTPLUG);
- requested_features |= (1UL << VIRTIO_SCSI_F_CHANGE);
return requested_features;
}
diff --git a/hw/virtio-scsi.h b/hw/virtio-scsi.h
index 4bc889d..91924f6 100644
--- a/hw/virtio-scsi.h
+++ b/hw/virtio-scsi.h
@@ -21,6 +21,11 @@
/* The ID for virtio_scsi */
#define VIRTIO_ID_SCSI 8
+/* Feature Bits */
+#define VIRTIO_SCSI_F_INOUT 0
+#define VIRTIO_SCSI_F_HOTPLUG 1
+#define VIRTIO_SCSI_F_CHANGE 2
+
struct VirtIOSCSIConf {
uint32_t num_queues;
uint32_t max_sectors;
@@ -31,6 +36,8 @@ struct VirtIOSCSIConf {
DEFINE_VIRTIO_COMMON_FEATURES(_state, _features_field), \
DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \
DEFINE_PROP_UINT32("max_sectors", _state, _conf_field.max_sectors, 0xFFFF), \
- DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128)
+ DEFINE_PROP_UINT32("cmd_per_lun", _state, _conf_field.cmd_per_lun, 128), \
+ DEFINE_PROP_BIT("hotplug", _state, _features_field, VIRTIO_SCSI_F_HOTPLUG, true), \
+ DEFINE_PROP_BIT("param_change", _state, _features_field, VIRTIO_SCSI_F_CHANGE, true)
#endif /* _QEMU_VIRTIO_SCSI_H */