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23#include "qemu/osdep.h"
24#include "hw/boards.h"
25#include "kvm_arm.h"
26#include "qapi/qapi-commands-misc.h"
27
28static GICCapability *gic_cap_new(int version)
29{
30 GICCapability *cap = g_new0(GICCapability, 1);
31 cap->version = version;
32
33 cap->emulated = false;
34 cap->kernel = false;
35 return cap;
36}
37
38static GICCapabilityList *gic_cap_list_add(GICCapabilityList *head,
39 GICCapability *cap)
40{
41 GICCapabilityList *item = g_new0(GICCapabilityList, 1);
42 item->value = cap;
43 item->next = head;
44 return item;
45}
46
47static inline void gic_cap_kvm_probe(GICCapability *v2, GICCapability *v3)
48{
49#ifdef CONFIG_KVM
50 int fdarray[3];
51
52 if (!kvm_arm_create_scratch_host_vcpu(NULL, fdarray, NULL)) {
53 return;
54 }
55
56
57 if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V2)) {
58 v2->kernel = true;
59 }
60
61
62 if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V3)) {
63 v3->kernel = true;
64 }
65
66 kvm_arm_destroy_scratch_host_vcpu(fdarray);
67#endif
68}
69
70GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
71{
72 GICCapabilityList *head = NULL;
73 GICCapability *v2 = gic_cap_new(2), *v3 = gic_cap_new(3);
74
75 v2->emulated = true;
76 v3->emulated = true;
77
78 gic_cap_kvm_probe(v2, v3);
79
80 head = gic_cap_list_add(head, v2);
81 head = gic_cap_list_add(head, v3);
82
83 return head;
84}
85