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- /*
- * Copyright (C) 2012-2014 ARM Ltd.
- * Author: Marc Zyngier <marc.zyngier@arm.com>
- *
- * Derived from virt/kvm/arm/vgic.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
- #ifndef __KVM_VGIC_H__
- #define __KVM_VGIC_H__
- #include <kvm/iodev.h>
- #define VGIC_ADDR_UNDEF (-1)
- #define IS_VGIC_ADDR_UNDEF(_x) ((_x) == VGIC_ADDR_UNDEF)
- #define PRODUCT_ID_KVM 0x4b /* ASCII code K */
- #define IMPLEMENTER_ARM 0x43b
- #define ACCESS_READ_VALUE (1 << 0)
- #define ACCESS_READ_RAZ (0 << 0)
- #define ACCESS_READ_MASK(x) ((x) & (1 << 0))
- #define ACCESS_WRITE_IGNORED (0 << 1)
- #define ACCESS_WRITE_SETBIT (1 << 1)
- #define ACCESS_WRITE_CLEARBIT (2 << 1)
- #define ACCESS_WRITE_VALUE (3 << 1)
- #define ACCESS_WRITE_MASK(x) ((x) & (3 << 1))
- #define VCPU_NOT_ALLOCATED ((u8)-1)
- unsigned long *vgic_bitmap_get_shared_map(struct vgic_bitmap *x);
- void vgic_update_state(struct kvm *kvm);
- int vgic_init_common_maps(struct kvm *kvm);
- u32 *vgic_bitmap_get_reg(struct vgic_bitmap *x, int cpuid, u32 offset);
- u32 *vgic_bytemap_get_reg(struct vgic_bytemap *x, int cpuid, u32 offset);
- void vgic_dist_irq_set_pending(struct kvm_vcpu *vcpu, int irq);
- void vgic_dist_irq_clear_pending(struct kvm_vcpu *vcpu, int irq);
- void vgic_cpu_irq_clear(struct kvm_vcpu *vcpu, int irq);
- void vgic_bitmap_set_irq_val(struct vgic_bitmap *x, int cpuid,
- int irq, int val);
- void vgic_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
- void vgic_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
- bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq);
- void vgic_unqueue_irqs(struct kvm_vcpu *vcpu);
- struct kvm_exit_mmio {
- phys_addr_t phys_addr;
- void *data;
- u32 len;
- bool is_write;
- void *private;
- };
- void vgic_reg_access(struct kvm_exit_mmio *mmio, u32 *reg,
- phys_addr_t offset, int mode);
- bool handle_mmio_raz_wi(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio,
- phys_addr_t offset);
- static inline
- u32 mmio_data_read(struct kvm_exit_mmio *mmio, u32 mask)
- {
- return le32_to_cpu(*((u32 *)mmio->data)) & mask;
- }
- static inline
- void mmio_data_write(struct kvm_exit_mmio *mmio, u32 mask, u32 value)
- {
- *((u32 *)mmio->data) = cpu_to_le32(value) & mask;
- }
- struct vgic_io_range {
- phys_addr_t base;
- unsigned long len;
- int bits_per_irq;
- bool (*handle_mmio)(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio,
- phys_addr_t offset);
- };
- int vgic_register_kvm_io_dev(struct kvm *kvm, gpa_t base, int len,
- const struct vgic_io_range *ranges,
- int redist_id,
- struct vgic_io_device *iodev);
- static inline bool is_in_range(phys_addr_t addr, unsigned long len,
- phys_addr_t baseaddr, unsigned long size)
- {
- return (addr >= baseaddr) && (addr + len <= baseaddr + size);
- }
- const
- struct vgic_io_range *vgic_find_range(const struct vgic_io_range *ranges,
- int len, gpa_t offset);
- bool vgic_handle_enable_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
- phys_addr_t offset, int vcpu_id, int access);
- bool vgic_handle_set_pending_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
- phys_addr_t offset, int vcpu_id);
- bool vgic_handle_clear_pending_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
- phys_addr_t offset, int vcpu_id);
- bool vgic_handle_set_active_reg(struct kvm *kvm,
- struct kvm_exit_mmio *mmio,
- phys_addr_t offset, int vcpu_id);
- bool vgic_handle_clear_active_reg(struct kvm *kvm,
- struct kvm_exit_mmio *mmio,
- phys_addr_t offset, int vcpu_id);
- bool vgic_handle_cfg_reg(u32 *reg, struct kvm_exit_mmio *mmio,
- phys_addr_t offset);
- void vgic_kick_vcpus(struct kvm *kvm);
- int vgic_has_attr_regs(const struct vgic_io_range *ranges, phys_addr_t offset);
- int vgic_set_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr);
- int vgic_get_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr);
- int vgic_init(struct kvm *kvm);
- void vgic_v2_init_emulation(struct kvm *kvm);
- void vgic_v3_init_emulation(struct kvm *kvm);
- #endif
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