2 * Copyright (C) 2012-2014 ARM Ltd.
3 * Author: Marc Zyngier <marc.zyngier@arm.com>
5 * Derived from virt/kvm/arm/vgic.c
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #ifndef __KVM_VGIC_H__
21 #define __KVM_VGIC_H__
23 #define VGIC_ADDR_UNDEF (-1)
24 #define IS_VGIC_ADDR_UNDEF(_x) ((_x) == VGIC_ADDR_UNDEF)
26 #define PRODUCT_ID_KVM 0x4b /* ASCII code K */
27 #define IMPLEMENTER_ARM 0x43b
29 #define ACCESS_READ_VALUE (1 << 0)
30 #define ACCESS_READ_RAZ (0 << 0)
31 #define ACCESS_READ_MASK(x) ((x) & (1 << 0))
32 #define ACCESS_WRITE_IGNORED (0 << 1)
33 #define ACCESS_WRITE_SETBIT (1 << 1)
34 #define ACCESS_WRITE_CLEARBIT (2 << 1)
35 #define ACCESS_WRITE_VALUE (3 << 1)
36 #define ACCESS_WRITE_MASK(x) ((x) & (3 << 1))
38 #define VCPU_NOT_ALLOCATED ((u8)-1)
40 unsigned long *vgic_bitmap_get_shared_map(struct vgic_bitmap *x);
42 void vgic_update_state(struct kvm *kvm);
43 int vgic_init_common_maps(struct kvm *kvm);
45 u32 *vgic_bitmap_get_reg(struct vgic_bitmap *x, int cpuid, u32 offset);
46 u32 *vgic_bytemap_get_reg(struct vgic_bytemap *x, int cpuid, u32 offset);
48 void vgic_dist_irq_set_pending(struct kvm_vcpu *vcpu, int irq);
49 void vgic_dist_irq_clear_pending(struct kvm_vcpu *vcpu, int irq);
50 void vgic_cpu_irq_clear(struct kvm_vcpu *vcpu, int irq);
51 void vgic_bitmap_set_irq_val(struct vgic_bitmap *x, int cpuid,
54 void vgic_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
55 void vgic_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
57 bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq);
58 void vgic_unqueue_irqs(struct kvm_vcpu *vcpu);
60 void vgic_reg_access(struct kvm_exit_mmio *mmio, u32 *reg,
61 phys_addr_t offset, int mode);
62 bool handle_mmio_raz_wi(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio,
66 u32 mmio_data_read(struct kvm_exit_mmio *mmio, u32 mask)
68 return le32_to_cpu(*((u32 *)mmio->data)) & mask;
72 void mmio_data_write(struct kvm_exit_mmio *mmio, u32 mask, u32 value)
74 *((u32 *)mmio->data) = cpu_to_le32(value) & mask;
77 struct kvm_mmio_range {
81 bool (*handle_mmio)(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio,
85 static inline bool is_in_range(phys_addr_t addr, unsigned long len,
86 phys_addr_t baseaddr, unsigned long size)
88 return (addr >= baseaddr) && (addr + len <= baseaddr + size);
92 struct kvm_mmio_range *vgic_find_range(const struct kvm_mmio_range *ranges,
93 struct kvm_exit_mmio *mmio,
96 bool vgic_handle_mmio_range(struct kvm_vcpu *vcpu, struct kvm_run *run,
97 struct kvm_exit_mmio *mmio,
98 const struct kvm_mmio_range *ranges,
99 unsigned long mmio_base);
101 bool vgic_handle_enable_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
102 phys_addr_t offset, int vcpu_id, int access);
104 bool vgic_handle_set_pending_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
105 phys_addr_t offset, int vcpu_id);
107 bool vgic_handle_clear_pending_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
108 phys_addr_t offset, int vcpu_id);
110 bool vgic_handle_cfg_reg(u32 *reg, struct kvm_exit_mmio *mmio,
113 void vgic_kick_vcpus(struct kvm *kvm);
115 int vgic_has_attr_regs(const struct kvm_mmio_range *ranges, phys_addr_t offset);
116 int vgic_set_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr);
117 int vgic_get_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr);
119 int vgic_init(struct kvm *kvm);
120 void vgic_v2_init_emulation(struct kvm *kvm);
121 void vgic_v3_init_emulation(struct kvm *kvm);