| /* |
| * 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 <kvm/arm_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 <kvm/arm_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_fault_info { |
| u32 hsr; /* Hyp Syndrome Register */ |
| u32 hxfar; /* Hyp Data/Inst. Fault Address Register */ |
| u32 hpfar; /* Hyp IPA Fault Address Register */ |
| u32 hyp_pc; /* PC when exception was taken from Hyp mode */ |
| }; |
| |
| typedef struct vfp_hard_struct kvm_cpu_context_t; |
| |
| 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 */ |
| struct kvm_vcpu_fault_info fault; |
| |
| /* Floating point registers (VFP and Advanced SIMD/NEON) */ |
| struct vfp_hard_struct vfp_guest; |
| |
| /* Host FP context */ |
| kvm_cpu_context_t *host_cpu_context; |
| |
| /* 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 */ |
| |
| /* 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 *); |
| |
| int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, |
| int exception_index); |
| |
| static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr, |
| phys_addr_t pgd_ptr, |
| unsigned long hyp_stack_ptr, |
| unsigned long vector_ptr) |
| { |
| /* |
| * Call initialization code, and switch to the full blown HYP |
| * code. The init code doesn't need to preserve these |
| * registers as r0-r3 are already callee saved according to |
| * the AAPCS. |
| * Note that we slightly misuse the prototype by casing the |
| * stack pointer to a void *. |
| * |
| * We don't have enough registers to perform the full init in |
| * one go. Install the boot PGD first, and then install the |
| * runtime PGD, stack pointer and vectors. The PGDs are always |
| * passed as the third argument, in order to be passed into |
| * r2-r3 to the init code (yes, this is compliant with the |
| * PCS!). |
| */ |
| |
| kvm_call_hyp(NULL, 0, boot_pgd_ptr); |
| |
| kvm_call_hyp((void*)hyp_stack_ptr, vector_ptr, pgd_ptr); |
| } |
| |
| static inline int kvm_arch_dev_ioctl_check_extension(long ext) |
| { |
| return 0; |
| } |
| |
| int kvm_perf_init(void); |
| int kvm_perf_teardown(void); |
| |
| #endif /* __ARM_KVM_HOST_H__ */ |