2 * KVM in-kernel IOPIC support
4 * Copyright (c) 2011 Siemens AG
7 * Jan Kiszka <jan.kiszka@siemens.com>
9 * This work is licensed under the terms of the GNU GPL version 2.
10 * See the COPYING file in the top-level directory.
14 #include "hw/ioapic_internal.h"
15 #include "hw/apic_internal.h"
18 typedef struct KVMIOAPICState KVMIOAPICState
;
20 struct KVMIOAPICState
{
21 IOAPICCommonState ioapic
;
22 uint32_t kvm_gsi_base
;
25 static void kvm_ioapic_get(IOAPICCommonState
*s
)
27 struct kvm_irqchip chip
;
28 struct kvm_ioapic_state
*kioapic
;
31 chip
.chip_id
= KVM_IRQCHIP_IOAPIC
;
32 ret
= kvm_vm_ioctl(kvm_state
, KVM_GET_IRQCHIP
, &chip
);
34 fprintf(stderr
, "KVM_GET_IRQCHIP failed: %s\n", strerror(ret
));
38 kioapic
= &chip
.chip
.ioapic
;
41 s
->ioregsel
= kioapic
->ioregsel
;
42 s
->irr
= kioapic
->irr
;
43 for (i
= 0; i
< IOAPIC_NUM_PINS
; i
++) {
44 s
->ioredtbl
[i
] = kioapic
->redirtbl
[i
].bits
;
48 static void kvm_ioapic_put(IOAPICCommonState
*s
)
50 struct kvm_irqchip chip
;
51 struct kvm_ioapic_state
*kioapic
;
54 chip
.chip_id
= KVM_IRQCHIP_IOAPIC
;
55 kioapic
= &chip
.chip
.ioapic
;
58 kioapic
->ioregsel
= s
->ioregsel
;
59 kioapic
->base_address
= s
->busdev
.mmio
[0].addr
;
60 kioapic
->irr
= s
->irr
;
61 for (i
= 0; i
< IOAPIC_NUM_PINS
; i
++) {
62 kioapic
->redirtbl
[i
].bits
= s
->ioredtbl
[i
];
65 ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_IRQCHIP
, &chip
);
67 fprintf(stderr
, "KVM_GET_IRQCHIP failed: %s\n", strerror(ret
));
72 static void kvm_ioapic_reset(DeviceState
*dev
)
74 IOAPICCommonState
*s
= DO_UPCAST(IOAPICCommonState
, busdev
.qdev
, dev
);
76 ioapic_reset_common(dev
);
80 static void kvm_ioapic_set_irq(void *opaque
, int irq
, int level
)
82 KVMIOAPICState
*s
= opaque
;
85 delivered
= kvm_set_irq(kvm_state
, s
->kvm_gsi_base
+ irq
, level
);
86 apic_report_irq_delivered(delivered
);
89 static void kvm_ioapic_init(IOAPICCommonState
*s
, int instance_no
)
91 memory_region_init_reservation(&s
->io_memory
, "kvm-ioapic", 0x1000);
93 qdev_init_gpio_in(&s
->busdev
.qdev
, kvm_ioapic_set_irq
, IOAPIC_NUM_PINS
);
96 static Property kvm_ioapic_properties
[] = {
97 DEFINE_PROP_UINT32("gsi_base", KVMIOAPICState
, kvm_gsi_base
, 0),
98 DEFINE_PROP_END_OF_LIST()
101 static void kvm_ioapic_class_init(ObjectClass
*klass
, void *data
)
103 IOAPICCommonClass
*k
= IOAPIC_COMMON_CLASS(klass
);
104 DeviceClass
*dc
= DEVICE_CLASS(klass
);
106 k
->init
= kvm_ioapic_init
;
107 k
->pre_save
= kvm_ioapic_get
;
108 k
->post_load
= kvm_ioapic_put
;
109 dc
->reset
= kvm_ioapic_reset
;
110 dc
->props
= kvm_ioapic_properties
;
113 static TypeInfo kvm_ioapic_info
= {
114 .name
= "kvm-ioapic",
115 .parent
= TYPE_IOAPIC_COMMON
,
116 .instance_size
= sizeof(KVMIOAPICState
),
117 .class_init
= kvm_ioapic_class_init
,
120 static void kvm_ioapic_register_types(void)
122 type_register_static(&kvm_ioapic_info
);
125 type_init(kvm_ioapic_register_types
)