virtio-scsi: suppress virtqueue kick during processing
[qemu.git] / target / arm / monitor.c
1 /*
2 * QEMU monitor.c for ARM.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 * THE SOFTWARE.
21 */
22 #include "qemu/osdep.h"
23 #include "qmp-commands.h"
24 #include "hw/boards.h"
25 #include "kvm_arm.h"
26
27 static GICCapability *gic_cap_new(int version)
28 {
29 GICCapability *cap = g_new0(GICCapability, 1);
30 cap->version = version;
31 /* by default, support none */
32 cap->emulated = false;
33 cap->kernel = false;
34 return cap;
35 }
36
37 static GICCapabilityList *gic_cap_list_add(GICCapabilityList *head,
38 GICCapability *cap)
39 {
40 GICCapabilityList *item = g_new0(GICCapabilityList, 1);
41 item->value = cap;
42 item->next = head;
43 return item;
44 }
45
46 static inline void gic_cap_kvm_probe(GICCapability *v2, GICCapability *v3)
47 {
48 #ifdef CONFIG_KVM
49 int fdarray[3];
50
51 if (!kvm_arm_create_scratch_host_vcpu(NULL, fdarray, NULL)) {
52 return;
53 }
54
55 /* Test KVM GICv2 */
56 if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V2)) {
57 v2->kernel = true;
58 }
59
60 /* Test KVM GICv3 */
61 if (kvm_device_supported(fdarray[1], KVM_DEV_TYPE_ARM_VGIC_V3)) {
62 v3->kernel = true;
63 }
64
65 kvm_arm_destroy_scratch_host_vcpu(fdarray);
66 #endif
67 }
68
69 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
70 {
71 GICCapabilityList *head = NULL;
72 GICCapability *v2 = gic_cap_new(2), *v3 = gic_cap_new(3);
73
74 v2->emulated = true;
75 v3->emulated = true;
76
77 gic_cap_kvm_probe(v2, v3);
78
79 head = gic_cap_list_add(head, v2);
80 head = gic_cap_list_add(head, v3);
81
82 return head;
83 }