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-rw-r--r--target-arm/monitor.c58
1 files changed, 57 insertions, 1 deletions
diff --git a/target-arm/monitor.c b/target-arm/monitor.c
index 4c9bef3186..1ee59a2e45 100644
--- a/target-arm/monitor.c
+++ b/target-arm/monitor.c
@@ -21,8 +21,64 @@
*/
#include "qemu/osdep.h"
#include "qmp-commands.h"
+#include "hw/boards.h"
+#include "kvm_arm.h"
+
+static GICCapability *gic_cap_new(int version)
+{
+ GICCapability *cap = g_new0(GICCapability, 1);
+ cap->version = version;
+ /* by default, support none */
+ cap->emulated = false;
+ cap->kernel = false;
+ return cap;
+}
+
+static GICCapabilityList *gic_cap_list_add(GICCapabilityList *head,
+ GICCapability *cap)
+{
+ GICCapabilityList *item = g_new0(GICCapabilityList, 1);
+ item->value = cap;
+ item->next = head;
+ return item;
+}
+
+static inline void gic_cap_kvm_probe(GICCapability *v2, GICCapability *v3)
+{
+#ifdef CONFIG_KVM
+ int fdarray[3];
+
+ if (!kvm_arm_create_scratch_host_vcpu(NULL, fdarray, NULL)) {
+ return;
+ }
+
+ /* Test KVM GICv2 */
+ if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V2)) {
+ v2->kernel = true;
+ }
+
+ /* Test KVM GICv3 */
+ if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V3)) {
+ v3->kernel = true;
+ }
+
+ kvm_arm_destroy_scratch_host_vcpu(fdarray);
+#endif
+}
GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
{
- return NULL;
+ GICCapabilityList *head = NULL;
+ GICCapability *v2 = gic_cap_new(2), *v3 = gic_cap_new(3);
+
+ v2->emulated = true;
+ /* TODO: we'd change to true after we get emulated GICv3. */
+ v3->emulated = false;
+
+ gic_cap_kvm_probe(v2, v3);
+
+ head = gic_cap_list_add(head, v2);
+ head = gic_cap_list_add(head, v3);
+
+ return head;
}