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- /*
- * Copyright (C) 2012 - Virtual Open Systems and Columbia University
- * Author: Christoffer Dall <c.dall@virtualopensystems.com>
- *
- * 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, write to the Free Software
- * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- #ifndef __ARM_KVM_HOST_H__
- #define __ARM_KVM_HOST_H__
- #include <asm/kvm.h>
- #include <asm/kvm_asm.h>
- #include <asm/kvm_mmio.h>
- #include <asm/fpstate.h>
- #include <asm/kvm_arch_timer.h>
- #define KVM_MAX_VCPUS CONFIG_KVM_ARM_MAX_VCPUS
- #define KVM_USER_MEM_SLOTS 32
- #define KVM_PRIVATE_MEM_SLOTS 4
- #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
- #define KVM_HAVE_ONE_REG
- #define KVM_VCPU_MAX_FEATURES 1
- /* We don't currently support large pages. */
- #define KVM_HPAGE_GFN_SHIFT(x) 0
- #define KVM_NR_PAGE_SIZES 1
- #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
- #include <asm/kvm_vgic.h>
- struct kvm_vcpu;
- u32 *kvm_vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num, u32 mode);
- int kvm_target_cpu(void);
- int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
- void kvm_reset_coprocs(struct kvm_vcpu *vcpu);
- struct kvm_arch {
- /* VTTBR value associated with below pgd and vmid */
- u64 vttbr;
- /* Timer */
- struct arch_timer_kvm timer;
- /*
- * Anything that is not used directly from assembly code goes
- * here.
- */
- /* The VMID generation used for the virt. memory system */
- u64 vmid_gen;
- u32 vmid;
- /* Stage-2 page table */
- pgd_t *pgd;
- /* Interrupt controller */
- struct vgic_dist vgic;
- };
- #define KVM_NR_MEM_OBJS 40
- /*
- * We don't want allocation failures within the mmu code, so we preallocate
- * enough memory for a single page fault in a cache.
- */
- struct kvm_mmu_memory_cache {
- int nobjs;
- void *objects[KVM_NR_MEM_OBJS];
- };
- struct kvm_vcpu_arch {
- struct kvm_regs regs;
- int target; /* Processor target */
- DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES);
- /* System control coprocessor (cp15) */
- u32 cp15[NR_CP15_REGS];
- /* The CPU type we expose to the VM */
- u32 midr;
- /* Exception Information */
- u32 hsr; /* Hyp Syndrome Register */
- u32 hxfar; /* Hyp Data/Inst Fault Address Register */
- u32 hpfar; /* Hyp IPA Fault Address Register */
- /* Floating point registers (VFP and Advanced SIMD/NEON) */
- struct vfp_hard_struct vfp_guest;
- struct vfp_hard_struct *vfp_host;
- /* VGIC state */
- struct vgic_cpu vgic_cpu;
- struct arch_timer_cpu timer_cpu;
- /*
- * Anything that is not used directly from assembly code goes
- * here.
- */
- /* dcache set/way operation pending */
- int last_pcpu;
- cpumask_t require_dcache_flush;
- /* Don't run the guest on this vcpu */
- bool pause;
- /* IO related fields */
- struct kvm_decode mmio_decode;
- /* Interrupt related fields */
- u32 irq_lines; /* IRQ and FIQ levels */
- /* Hyp exception information */
- u32 hyp_pc; /* PC when exception was taken from Hyp mode */
- /* Cache some mmu pages needed inside spinlock regions */
- struct kvm_mmu_memory_cache mmu_page_cache;
- /* Detect first run of a vcpu */
- bool has_run_once;
- };
- struct kvm_vm_stat {
- u32 remote_tlb_flush;
- };
- struct kvm_vcpu_stat {
- u32 halt_wakeup;
- };
- struct kvm_vcpu_init;
- int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
- const struct kvm_vcpu_init *init);
- unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
- int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
- struct kvm_one_reg;
- int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
- int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
- u64 kvm_call_hyp(void *hypfn, ...);
- void force_vm_exit(const cpumask_t *mask);
- #define KVM_ARCH_WANT_MMU_NOTIFIER
- struct kvm;
- int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
- int kvm_unmap_hva_range(struct kvm *kvm,
- unsigned long start, unsigned long end);
- void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
- unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
- int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
- /* We do not have shadow page tables, hence the empty hooks */
- static inline int kvm_age_hva(struct kvm *kvm, unsigned long hva)
- {
- return 0;
- }
- static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
- {
- return 0;
- }
- struct kvm_vcpu *kvm_arm_get_running_vcpu(void);
- struct kvm_vcpu __percpu **kvm_get_running_vcpus(void);
- int kvm_arm_copy_coproc_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
- unsigned long kvm_arm_num_coproc_regs(struct kvm_vcpu *vcpu);
- struct kvm_one_reg;
- int kvm_arm_coproc_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *);
- int kvm_arm_coproc_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *);
- #endif /* __ARM_KVM_HOST_H__ */
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