2 * ARM Generic Interrupt Controller using KVM in-kernel support
4 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
5 * Written by Pavel Fedin
6 * Based on vGICv2 code by Peter Maydell
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, see <http://www.gnu.org/licenses/>.
22 #include "hw/intc/arm_gicv3_common.h"
23 #include "hw/sysbus.h"
24 #include "sysemu/kvm.h"
26 #include "vgic_common.h"
28 #ifdef DEBUG_GICV3_KVM
29 #define DPRINTF(fmt, ...) \
30 do { fprintf(stderr, "kvm_gicv3: " fmt, ## __VA_ARGS__); } while (0)
32 #define DPRINTF(fmt, ...) \
36 #define TYPE_KVM_ARM_GICV3 "kvm-arm-gicv3"
37 #define KVM_ARM_GICV3(obj) \
38 OBJECT_CHECK(GICv3State, (obj), TYPE_KVM_ARM_GICV3)
39 #define KVM_ARM_GICV3_CLASS(klass) \
40 OBJECT_CLASS_CHECK(KVMARMGICv3Class, (klass), TYPE_KVM_ARM_GICV3)
41 #define KVM_ARM_GICV3_GET_CLASS(obj) \
42 OBJECT_GET_CLASS(KVMARMGICv3Class, (obj), TYPE_KVM_ARM_GICV3)
44 typedef struct KVMARMGICv3Class
{
45 ARMGICv3CommonClass parent_class
;
46 DeviceRealize parent_realize
;
47 void (*parent_reset
)(DeviceState
*dev
);
50 static void kvm_arm_gicv3_set_irq(void *opaque
, int irq
, int level
)
52 GICv3State
*s
= (GICv3State
*)opaque
;
54 kvm_arm_gic_set_irq(s
->num_irq
, irq
, level
);
57 static void kvm_arm_gicv3_put(GICv3State
*s
)
60 DPRINTF("Cannot put kernel gic state, no kernel interface\n");
63 static void kvm_arm_gicv3_get(GICv3State
*s
)
66 DPRINTF("Cannot get kernel gic state, no kernel interface\n");
69 static void kvm_arm_gicv3_reset(DeviceState
*dev
)
71 GICv3State
*s
= ARM_GICV3_COMMON(dev
);
72 KVMARMGICv3Class
*kgc
= KVM_ARM_GICV3_GET_CLASS(s
);
76 kgc
->parent_reset(dev
);
80 static void kvm_arm_gicv3_realize(DeviceState
*dev
, Error
**errp
)
82 GICv3State
*s
= KVM_ARM_GICV3(dev
);
83 KVMARMGICv3Class
*kgc
= KVM_ARM_GICV3_GET_CLASS(s
);
84 Error
*local_err
= NULL
;
86 DPRINTF("kvm_arm_gicv3_realize\n");
88 kgc
->parent_realize(dev
, &local_err
);
90 error_propagate(errp
, local_err
);
94 if (s
->security_extn
) {
95 error_setg(errp
, "the in-kernel VGICv3 does not implement the "
96 "security extensions");
100 gicv3_init_irqs_and_mmio(s
, kvm_arm_gicv3_set_irq
, NULL
);
102 /* Try to create the device via the device control API */
103 s
->dev_fd
= kvm_create_device(kvm_state
, KVM_DEV_TYPE_ARM_VGIC_V3
, false);
105 error_setg_errno(errp
, -s
->dev_fd
, "error creating in-kernel VGIC");
109 kvm_device_access(s
->dev_fd
, KVM_DEV_ARM_VGIC_GRP_NR_IRQS
,
110 0, &s
->num_irq
, true);
112 /* Tell the kernel to complete VGIC initialization now */
113 kvm_device_access(s
->dev_fd
, KVM_DEV_ARM_VGIC_GRP_CTRL
,
114 KVM_DEV_ARM_VGIC_CTRL_INIT
, NULL
, true);
116 kvm_arm_register_device(&s
->iomem_dist
, -1, KVM_DEV_ARM_VGIC_GRP_ADDR
,
117 KVM_VGIC_V3_ADDR_TYPE_DIST
, s
->dev_fd
);
118 kvm_arm_register_device(&s
->iomem_redist
, -1, KVM_DEV_ARM_VGIC_GRP_ADDR
,
119 KVM_VGIC_V3_ADDR_TYPE_REDIST
, s
->dev_fd
);
122 static void kvm_arm_gicv3_class_init(ObjectClass
*klass
, void *data
)
124 DeviceClass
*dc
= DEVICE_CLASS(klass
);
125 ARMGICv3CommonClass
*agcc
= ARM_GICV3_COMMON_CLASS(klass
);
126 KVMARMGICv3Class
*kgc
= KVM_ARM_GICV3_CLASS(klass
);
128 agcc
->pre_save
= kvm_arm_gicv3_get
;
129 agcc
->post_load
= kvm_arm_gicv3_put
;
130 kgc
->parent_realize
= dc
->realize
;
131 kgc
->parent_reset
= dc
->reset
;
132 dc
->realize
= kvm_arm_gicv3_realize
;
133 dc
->reset
= kvm_arm_gicv3_reset
;
136 static const TypeInfo kvm_arm_gicv3_info
= {
137 .name
= TYPE_KVM_ARM_GICV3
,
138 .parent
= TYPE_ARM_GICV3_COMMON
,
139 .instance_size
= sizeof(GICv3State
),
140 .class_init
= kvm_arm_gicv3_class_init
,
141 .class_size
= sizeof(KVMARMGICv3Class
),
144 static void kvm_arm_gicv3_register_types(void)
146 type_register_static(&kvm_arm_gicv3_info
);
149 type_init(kvm_arm_gicv3_register_types
)