diff options
Diffstat (limited to 'arch/powerpc/include/asm/kvm_ppc.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_ppc.h | 462 |
1 files changed, 449 insertions, 13 deletions
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index ecb3bc74c34..9c89cdd067a 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -28,11 +28,15 @@ #include <linux/types.h> #include <linux/kvm_types.h> #include <linux/kvm_host.h> +#include <linux/bug.h> #ifdef CONFIG_PPC_BOOK3S #include <asm/kvm_book3s.h> #else #include <asm/kvm_booke.h> #endif +#ifdef CONFIG_KVM_BOOK3S_64_HANDLER +#include <asm/paca.h> +#endif enum emulation_result { EMULATE_DONE, /* no further processing */ @@ -40,27 +44,33 @@ enum emulation_result { EMULATE_DO_DCR, /* kvm_run filled with DCR request */ EMULATE_FAIL, /* can't emulate this instruction */ EMULATE_AGAIN, /* something went wrong. go again */ + EMULATE_EXIT_USER, /* emulation requires exit to user-space */ }; +extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); -extern char kvmppc_handlers_start[]; -extern unsigned long kvmppc_handler_len; extern void kvmppc_handler_highmem(void); extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int rt, unsigned int bytes, - int is_bigendian); + int is_default_endian); extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int rt, unsigned int bytes, - int is_bigendian); + int is_default_endian); extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, - u64 val, unsigned int bytes, int is_bigendian); + u64 val, unsigned int bytes, + int is_default_endian); extern int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu); extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); +extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); +extern void kvmppc_decrementer_func(unsigned long data); +extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); +extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); +extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); /* Core-specific hooks */ @@ -88,26 +98,146 @@ extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); -extern void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu); +extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); -extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu, - struct kvm_interrupt *irq); - -extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, - unsigned int op, int *advance); -extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs); -extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt); +extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); +extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); +extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); extern int kvmppc_booke_init(void); extern void kvmppc_booke_exit(void); extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); +extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); + +extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); +extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); +extern void kvmppc_free_hpt(struct kvm *kvm); +extern long kvmppc_prepare_vrma(struct kvm *kvm, + struct kvm_userspace_memory_region *mem); +extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, + struct kvm_memory_slot *memslot, unsigned long porder); +extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); + +extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, + struct kvm_create_spapr_tce *args); +extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, + unsigned long ioba, unsigned long tce); +extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, + unsigned long ioba); +extern struct kvm_rma_info *kvm_alloc_rma(void); +extern void kvm_release_rma(struct kvm_rma_info *ri); +extern struct page *kvm_alloc_hpt(unsigned long nr_pages); +extern void kvm_release_hpt(struct page *page, unsigned long nr_pages); +extern int kvmppc_core_init_vm(struct kvm *kvm); +extern void kvmppc_core_destroy_vm(struct kvm *kvm); +extern void kvmppc_core_free_memslot(struct kvm *kvm, + struct kvm_memory_slot *free, + struct kvm_memory_slot *dont); +extern int kvmppc_core_create_memslot(struct kvm *kvm, + struct kvm_memory_slot *slot, + unsigned long npages); +extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, + struct kvm_memory_slot *memslot, + struct kvm_userspace_memory_region *mem); +extern void kvmppc_core_commit_memory_region(struct kvm *kvm, + struct kvm_userspace_memory_region *mem, + const struct kvm_memory_slot *old); +extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, + struct kvm_ppc_smmu_info *info); +extern void kvmppc_core_flush_memslot(struct kvm *kvm, + struct kvm_memory_slot *memslot); + +extern int kvmppc_bookehv_init(void); +extern void kvmppc_bookehv_exit(void); + +extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); + +extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); + +int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); + +extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); +extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); +extern void kvmppc_rtas_tokens_free(struct kvm *kvm); +extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, + u32 priority); +extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, + u32 *priority); +extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); +extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); + +union kvmppc_one_reg { + u32 wval; + u64 dval; + vector128 vval; + u64 vsxval[2]; + struct { + u64 addr; + u64 length; + } vpaval; +}; + +struct kvmppc_ops { + struct module *owner; + int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); + int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); + int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, + union kvmppc_one_reg *val); + int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, + union kvmppc_one_reg *val); + void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); + void (*vcpu_put)(struct kvm_vcpu *vcpu); + void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); + int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); + struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); + void (*vcpu_free)(struct kvm_vcpu *vcpu); + int (*check_requests)(struct kvm_vcpu *vcpu); + int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); + void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); + int (*prepare_memory_region)(struct kvm *kvm, + struct kvm_memory_slot *memslot, + struct kvm_userspace_memory_region *mem); + void (*commit_memory_region)(struct kvm *kvm, + struct kvm_userspace_memory_region *mem, + const struct kvm_memory_slot *old); + int (*unmap_hva)(struct kvm *kvm, unsigned long hva); + int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, + unsigned long end); + int (*age_hva)(struct kvm *kvm, unsigned long hva); + int (*test_age_hva)(struct kvm *kvm, unsigned long hva); + void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); + void (*mmu_destroy)(struct kvm_vcpu *vcpu); + void (*free_memslot)(struct kvm_memory_slot *free, + struct kvm_memory_slot *dont); + int (*create_memslot)(struct kvm_memory_slot *slot, + unsigned long npages); + int (*init_vm)(struct kvm *kvm); + void (*destroy_vm)(struct kvm *kvm); + int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); + int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, + unsigned int inst, int *advance); + int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); + int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); + void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); + long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, + unsigned long arg); + +}; + +extern struct kvmppc_ops *kvmppc_hv_ops; +extern struct kvmppc_ops *kvmppc_pr_ops; + +static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) +{ + return kvm->arch.kvm_ops == kvmppc_hv_ops; +} /* * Cuts out inst bits with ordering according to spec. @@ -142,4 +272,310 @@ static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) return r; } +#define one_reg_size(id) \ + (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) + +#define get_reg_val(id, reg) ({ \ + union kvmppc_one_reg __u; \ + switch (one_reg_size(id)) { \ + case 4: __u.wval = (reg); break; \ + case 8: __u.dval = (reg); break; \ + default: BUG(); \ + } \ + __u; \ +}) + + +#define set_reg_val(id, val) ({ \ + u64 __v; \ + switch (one_reg_size(id)) { \ + case 4: __v = (val).wval; break; \ + case 8: __v = (val).dval; break; \ + default: BUG(); \ + } \ + __v; \ +}) + +int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); +int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); + +int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); +int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); + +int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); +int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); +int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); +int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); + +void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); + +struct openpic; + +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE +extern void kvm_cma_reserve(void) __init; +static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) +{ + paca[cpu].kvm_hstate.xics_phys = addr; +} + +static inline u32 kvmppc_get_xics_latch(void) +{ + u32 xirr; + + xirr = get_paca()->kvm_hstate.saved_xirr; + get_paca()->kvm_hstate.saved_xirr = 0; + return xirr; +} + +static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) +{ + paca[cpu].kvm_hstate.host_ipi = host_ipi; +} + +static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) +{ + vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); +} + +extern void kvm_hv_vm_activated(void); +extern void kvm_hv_vm_deactivated(void); +extern bool kvm_hv_mode_active(void); + +#else +static inline void __init kvm_cma_reserve(void) +{} + +static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) +{} + +static inline u32 kvmppc_get_xics_latch(void) +{ + return 0; +} + +static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) +{} + +static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) +{ + kvm_vcpu_kick(vcpu); +} + +static inline bool kvm_hv_mode_active(void) { return false; } + +#endif + +#ifdef CONFIG_KVM_XICS +static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) +{ + return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; +} +extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); +extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); +extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); +extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); +extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); +extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); +extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, + struct kvm_vcpu *vcpu, u32 cpu); +#else +static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) + { return 0; } +static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } +static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, + unsigned long server) + { return -EINVAL; } +static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, + struct kvm_irq_level *args) + { return -ENOTTY; } +static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) + { return 0; } +#endif + +static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) +{ +#ifdef CONFIG_KVM_BOOKE_HV + mtspr(SPRN_GEPR, epr); +#elif defined(CONFIG_BOOKE) + vcpu->arch.epr = epr; +#endif +} + +#ifdef CONFIG_KVM_MPIC + +void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); +int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, + u32 cpu); +void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); + +#else + +static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) +{ +} + +static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, + struct kvm_vcpu *vcpu, u32 cpu) +{ + return -EINVAL; +} + +static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, + struct kvm_vcpu *vcpu) +{ +} + +#endif /* CONFIG_KVM_MPIC */ + +int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, + struct kvm_config_tlb *cfg); +int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, + struct kvm_dirty_tlb *cfg); + +long kvmppc_alloc_lpid(void); +void kvmppc_claim_lpid(long lpid); +void kvmppc_free_lpid(long lpid); +void kvmppc_init_lpid(unsigned long nr_lpids); + +static inline void kvmppc_mmu_flush_icache(pfn_t pfn) +{ + struct page *page; + /* + * We can only access pages that the kernel maps + * as memory. Bail out for unmapped ones. + */ + if (!pfn_valid(pfn)) + return; + + /* Clear i-cache for new pages */ + page = pfn_to_page(pfn); + if (!test_bit(PG_arch_1, &page->flags)) { + flush_dcache_icache_page(page); + set_bit(PG_arch_1, &page->flags); + } +} + +/* + * Shared struct helpers. The shared struct can be little or big endian, + * depending on the guest endianness. So expose helpers to all of them. + */ +static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) +{ +#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) + /* Only Book3S_64 PR supports bi-endian for now */ + return vcpu->arch.shared_big_endian; +#elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) + /* Book3s_64 HV on little endian is always little endian */ + return false; +#else + return true; +#endif +} + +#define SHARED_WRAPPER_GET(reg, size) \ +static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ +{ \ + if (kvmppc_shared_big_endian(vcpu)) \ + return be##size##_to_cpu(vcpu->arch.shared->reg); \ + else \ + return le##size##_to_cpu(vcpu->arch.shared->reg); \ +} \ + +#define SHARED_WRAPPER_SET(reg, size) \ +static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ +{ \ + if (kvmppc_shared_big_endian(vcpu)) \ + vcpu->arch.shared->reg = cpu_to_be##size(val); \ + else \ + vcpu->arch.shared->reg = cpu_to_le##size(val); \ +} \ + +#define SHARED_WRAPPER(reg, size) \ + SHARED_WRAPPER_GET(reg, size) \ + SHARED_WRAPPER_SET(reg, size) \ + +SHARED_WRAPPER(critical, 64) +SHARED_WRAPPER(sprg0, 64) +SHARED_WRAPPER(sprg1, 64) +SHARED_WRAPPER(sprg2, 64) +SHARED_WRAPPER(sprg3, 64) +SHARED_WRAPPER(srr0, 64) +SHARED_WRAPPER(srr1, 64) +SHARED_WRAPPER(dar, 64) +SHARED_WRAPPER_GET(msr, 64) +static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) +{ + if (kvmppc_shared_big_endian(vcpu)) + vcpu->arch.shared->msr = cpu_to_be64(val); + else + vcpu->arch.shared->msr = cpu_to_le64(val); +} +SHARED_WRAPPER(dsisr, 32) +SHARED_WRAPPER(int_pending, 32) +SHARED_WRAPPER(sprg4, 64) +SHARED_WRAPPER(sprg5, 64) +SHARED_WRAPPER(sprg6, 64) +SHARED_WRAPPER(sprg7, 64) + +static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) +{ + if (kvmppc_shared_big_endian(vcpu)) + return be32_to_cpu(vcpu->arch.shared->sr[nr]); + else + return le32_to_cpu(vcpu->arch.shared->sr[nr]); +} + +static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) +{ + if (kvmppc_shared_big_endian(vcpu)) + vcpu->arch.shared->sr[nr] = cpu_to_be32(val); + else + vcpu->arch.shared->sr[nr] = cpu_to_le32(val); +} + +/* + * Please call after prepare_to_enter. This function puts the lazy ee and irq + * disabled tracking state back to normal mode, without actually enabling + * interrupts. + */ +static inline void kvmppc_fix_ee_before_entry(void) +{ + trace_hardirqs_on(); + +#ifdef CONFIG_PPC64 + /* + * To avoid races, the caller must have gone directly from having + * interrupts fully-enabled to hard-disabled. + */ + WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); + + /* Only need to enable IRQs by hard enabling them after this */ + local_paca->irq_happened = 0; + local_paca->soft_enabled = 1; +#endif +} + +static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) +{ + ulong ea; + ulong msr_64bit = 0; + + ea = kvmppc_get_gpr(vcpu, rb); + if (ra) + ea += kvmppc_get_gpr(vcpu, ra); + +#if defined(CONFIG_PPC_BOOK3E_64) + msr_64bit = MSR_CM; +#elif defined(CONFIG_PPC_BOOK3S_64) + msr_64bit = MSR_SF; +#endif + + if (!(kvmppc_get_msr(vcpu) & msr_64bit)) + ea = (uint32_t)ea; + + return ea; +} + +extern void xics_wake_cpu(int cpu); + #endif /* __POWERPC_KVM_PPC_H__ */ |