1 /*
2 * QEMU ARM Xen PVH Machine
3 *
4 * SPDX-License-Identifier: MIT
5 */
6
7 #include "qemu/osdep.h"
8 #include "qemu/error-report.h"
9 #include "qapi/qapi-commands-migration.h"
10 #include "hw/boards.h"
11 #include "sysemu/sysemu.h"
12 #include "hw/xen/xen-pvh-common.h"
13 #include "hw/xen/arch_hvm.h"
14
15 #define TYPE_XEN_ARM MACHINE_TYPE_NAME("xenpvh")
16
17 /*
18 * VIRTIO_MMIO_DEV_SIZE is imported from tools/libs/light/libxl_arm.c under Xen
19 * repository.
20 *
21 * Origin: git://xenbits.xen.org/xen.git 2128143c114c
22 */
23 #define VIRTIO_MMIO_DEV_SIZE 0x200
24
25 #define NR_VIRTIO_MMIO_DEVICES \
26 (GUEST_VIRTIO_MMIO_SPI_LAST - GUEST_VIRTIO_MMIO_SPI_FIRST)
27
xen_arm_instance_init(Object * obj)28 static void xen_arm_instance_init(Object *obj)
29 {
30 XenPVHMachineState *s = XEN_PVH_MACHINE(obj);
31
32 /* Default values. */
33 s->cfg.ram_low = (MemMapEntry) { GUEST_RAM0_BASE, GUEST_RAM0_SIZE };
34 s->cfg.ram_high = (MemMapEntry) { GUEST_RAM1_BASE, GUEST_RAM1_SIZE };
35
36 s->cfg.virtio_mmio_num = NR_VIRTIO_MMIO_DEVICES;
37 s->cfg.virtio_mmio_irq_base = GUEST_VIRTIO_MMIO_SPI_FIRST;
38 s->cfg.virtio_mmio = (MemMapEntry) { GUEST_VIRTIO_MMIO_BASE,
39 VIRTIO_MMIO_DEV_SIZE };
40 }
41
xen_pvh_set_pci_intx_irq(void * opaque,int intx_irq,int level)42 static void xen_pvh_set_pci_intx_irq(void *opaque, int intx_irq, int level)
43 {
44 XenPVHMachineState *s = XEN_PVH_MACHINE(opaque);
45 int irq = s->cfg.pci_intx_irq_base + intx_irq;
46
47 if (xendevicemodel_set_irq_level(xen_dmod, xen_domid, irq, level)) {
48 error_report("xendevicemodel_set_pci_intx_level failed");
49 }
50 }
51
xen_arm_machine_class_init(ObjectClass * oc,void * data)52 static void xen_arm_machine_class_init(ObjectClass *oc, void *data)
53 {
54 XenPVHMachineClass *xpc = XEN_PVH_MACHINE_CLASS(oc);
55 MachineClass *mc = MACHINE_CLASS(oc);
56
57 mc->desc = "Xen PVH ARM machine";
58
59 /*
60 * mc->max_cpus holds the MAX value allowed in the -smp command-line opts.
61 *
62 * 1. If users don't pass any -smp option:
63 * ms->smp.cpus will default to 1.
64 * ms->smp.max_cpus will default to 1.
65 *
66 * 2. If users pass -smp X:
67 * ms->smp.cpus will be set to X.
68 * ms->smp.max_cpus will also be set to X.
69 *
70 * 3. If users pass -smp X,maxcpus=Y:
71 * ms->smp.cpus will be set to X.
72 * ms->smp.max_cpus will be set to Y.
73 *
74 * In scenarios 2 and 3, if X or Y are set to something larger than
75 * mc->max_cpus, QEMU will bail out with an error message.
76 */
77 mc->max_cpus = GUEST_MAX_VCPUS;
78
79 /* Xen/ARM does not use buffered IOREQs. */
80 xpc->handle_bufioreq = HVM_IOREQSRV_BUFIOREQ_OFF;
81
82 /* PCI INTX delivery. */
83 xpc->set_pci_intx_irq = xen_pvh_set_pci_intx_irq;
84
85 /* List of supported features known to work on PVH ARM. */
86 xpc->has_pci = true;
87 xpc->has_tpm = true;
88 xpc->has_virtio_mmio = true;
89
90 xen_pvh_class_setup_common_props(xpc);
91 }
92
93 static const TypeInfo xen_arm_machine_type = {
94 .name = TYPE_XEN_ARM,
95 .parent = TYPE_XEN_PVH_MACHINE,
96 .class_init = xen_arm_machine_class_init,
97 .instance_size = sizeof(XenPVHMachineState),
98 .instance_init = xen_arm_instance_init,
99 };
100
xen_arm_machine_register_types(void)101 static void xen_arm_machine_register_types(void)
102 {
103 type_register_static(&xen_arm_machine_type);
104 }
105
106 type_init(xen_arm_machine_register_types)
107