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0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  *
0004  * Copyright IBM Corp. 2008
0005  *
0006  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
0007  */
0008 
0009 #ifndef __POWERPC_KVM_PPC_H__
0010 #define __POWERPC_KVM_PPC_H__
0011 
0012 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header
0013  * dependencies. */
0014 
0015 #include <linux/mutex.h>
0016 #include <linux/timer.h>
0017 #include <linux/types.h>
0018 #include <linux/kvm_types.h>
0019 #include <linux/kvm_host.h>
0020 #include <linux/bug.h>
0021 #ifdef CONFIG_PPC_BOOK3S
0022 #include <asm/kvm_book3s.h>
0023 #else
0024 #include <asm/kvm_booke.h>
0025 #endif
0026 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
0027 #include <asm/paca.h>
0028 #include <asm/xive.h>
0029 #include <asm/cpu_has_feature.h>
0030 #endif
0031 
0032 /*
0033  * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
0034  * for supporting software breakpoint.
0035  */
0036 #define KVMPPC_INST_SW_BREAKPOINT   0x00dddd00
0037 
0038 enum emulation_result {
0039     EMULATE_DONE,         /* no further processing */
0040     EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
0041     EMULATE_FAIL,         /* can't emulate this instruction */
0042     EMULATE_AGAIN,        /* something went wrong. go again */
0043     EMULATE_EXIT_USER,    /* emulation requires exit to user-space */
0044 };
0045 
0046 enum instruction_fetch_type {
0047     INST_GENERIC,
0048     INST_SC,        /* system call */
0049 };
0050 
0051 enum xlate_instdata {
0052     XLATE_INST,     /* translate instruction address */
0053     XLATE_DATA      /* translate data address */
0054 };
0055 
0056 enum xlate_readwrite {
0057     XLATE_READ,     /* check for read permissions */
0058     XLATE_WRITE     /* check for write permissions */
0059 };
0060 
0061 extern int kvmppc_vcpu_run(struct kvm_vcpu *vcpu);
0062 extern int __kvmppc_vcpu_run(struct kvm_vcpu *vcpu);
0063 extern void kvmppc_handler_highmem(void);
0064 
0065 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
0066 extern int kvmppc_handle_load(struct kvm_vcpu *vcpu,
0067                               unsigned int rt, unsigned int bytes,
0068                   int is_default_endian);
0069 extern int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
0070                                unsigned int rt, unsigned int bytes,
0071                    int is_default_endian);
0072 extern int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
0073                 unsigned int rt, unsigned int bytes,
0074             int is_default_endian, int mmio_sign_extend);
0075 extern int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
0076         unsigned int rt, unsigned int bytes, int is_default_endian);
0077 extern int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
0078         unsigned int rs, unsigned int bytes, int is_default_endian);
0079 extern int kvmppc_handle_store(struct kvm_vcpu *vcpu,
0080                    u64 val, unsigned int bytes,
0081                    int is_default_endian);
0082 extern int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
0083                 int rs, unsigned int bytes,
0084                 int is_default_endian);
0085 
0086 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
0087                  enum instruction_fetch_type type, u32 *inst);
0088 
0089 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
0090              bool data);
0091 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
0092              bool data);
0093 extern int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu);
0094 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
0095 extern int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu);
0096 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
0097 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
0098 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
0099 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
0100 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
0101 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
0102 
0103 /* Core-specific hooks */
0104 
0105 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
0106                            unsigned int gtlb_idx);
0107 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
0108 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
0109 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
0110 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
0111 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
0112                               gva_t eaddr);
0113 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
0114 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
0115 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
0116             enum xlate_instdata xlid, enum xlate_readwrite xlrw,
0117             struct kvmppc_pte *pte);
0118 
0119 extern int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu);
0120 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
0121 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
0122 extern int kvmppc_core_check_processor_compat(void);
0123 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
0124                                       struct kvm_translation *tr);
0125 
0126 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
0127 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
0128 
0129 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
0130 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
0131 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags);
0132 extern void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu);
0133 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
0134 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
0135 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
0136 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
0137 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
0138 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
0139 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
0140                                        struct kvm_interrupt *irq);
0141 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
0142 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
0143                     ulong esr_flags);
0144 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
0145                        ulong dear_flags,
0146                        ulong esr_flags);
0147 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
0148 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
0149                        ulong esr_flags);
0150 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
0151 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
0152 
0153 extern int kvmppc_booke_init(void);
0154 extern void kvmppc_booke_exit(void);
0155 
0156 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
0157 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
0158 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
0159 
0160 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
0161 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
0162 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
0163 extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
0164 extern void kvmppc_rmap_reset(struct kvm *kvm);
0165 extern long kvmppc_prepare_vrma(struct kvm *kvm,
0166                 struct kvm_userspace_memory_region *mem);
0167 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
0168             struct kvm_memory_slot *memslot, unsigned long porder);
0169 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
0170 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
0171         struct iommu_group *grp);
0172 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
0173         struct iommu_group *grp);
0174 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
0175 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
0176 extern void kvmppc_setup_partition_table(struct kvm *kvm);
0177 
0178 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
0179                 struct kvm_create_spapr_tce_64 *args);
0180 #define kvmppc_ioba_validate(stt, ioba, npages)                         \
0181         (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \
0182                 (stt)->size, (ioba), (npages)) ?        \
0183                 H_PARAMETER : H_SUCCESS)
0184 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
0185                  unsigned long ioba, unsigned long tce);
0186 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
0187         unsigned long liobn, unsigned long ioba,
0188         unsigned long tce_list, unsigned long npages);
0189 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
0190         unsigned long liobn, unsigned long ioba,
0191         unsigned long tce_value, unsigned long npages);
0192 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
0193                  unsigned long ioba);
0194 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
0195 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
0196 extern int kvmppc_core_init_vm(struct kvm *kvm);
0197 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
0198 extern void kvmppc_core_free_memslot(struct kvm *kvm,
0199                      struct kvm_memory_slot *slot);
0200 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
0201                 const struct kvm_memory_slot *old,
0202                 struct kvm_memory_slot *new,
0203                 enum kvm_mr_change change);
0204 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
0205                 struct kvm_memory_slot *old,
0206                 const struct kvm_memory_slot *new,
0207                 enum kvm_mr_change change);
0208 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
0209                       struct kvm_ppc_smmu_info *info);
0210 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
0211                       struct kvm_memory_slot *memslot);
0212 
0213 extern int kvmppc_bookehv_init(void);
0214 extern void kvmppc_bookehv_exit(void);
0215 
0216 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
0217 
0218 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
0219 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
0220                         struct kvm_ppc_resize_hpt *rhpt);
0221 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
0222                        struct kvm_ppc_resize_hpt *rhpt);
0223 
0224 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
0225 
0226 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
0227 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
0228 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
0229 
0230 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
0231                 u32 priority);
0232 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
0233                 u32 *priority);
0234 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
0235 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
0236 
0237 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
0238 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
0239 
0240 union kvmppc_one_reg {
0241     u32 wval;
0242     u64 dval;
0243     vector128 vval;
0244     u64 vsxval[2];
0245     u32 vsx32val[4];
0246     u16 vsx16val[8];
0247     u8  vsx8val[16];
0248     struct {
0249         u64 addr;
0250         u64 length;
0251     }   vpaval;
0252     u64 xive_timaval[2];
0253 };
0254 
0255 struct kvmppc_ops {
0256     struct module *owner;
0257     int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
0258     int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
0259     int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
0260                union kvmppc_one_reg *val);
0261     int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
0262                union kvmppc_one_reg *val);
0263     void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
0264     void (*vcpu_put)(struct kvm_vcpu *vcpu);
0265     void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags);
0266     void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
0267     int (*vcpu_run)(struct kvm_vcpu *vcpu);
0268     int (*vcpu_create)(struct kvm_vcpu *vcpu);
0269     void (*vcpu_free)(struct kvm_vcpu *vcpu);
0270     int (*check_requests)(struct kvm_vcpu *vcpu);
0271     int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
0272     void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
0273     int (*prepare_memory_region)(struct kvm *kvm,
0274                      const struct kvm_memory_slot *old,
0275                      struct kvm_memory_slot *new,
0276                      enum kvm_mr_change change);
0277     void (*commit_memory_region)(struct kvm *kvm,
0278                      struct kvm_memory_slot *old,
0279                      const struct kvm_memory_slot *new,
0280                      enum kvm_mr_change change);
0281     bool (*unmap_gfn_range)(struct kvm *kvm, struct kvm_gfn_range *range);
0282     bool (*age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
0283     bool (*test_age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
0284     bool (*set_spte_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
0285     void (*free_memslot)(struct kvm_memory_slot *slot);
0286     int (*init_vm)(struct kvm *kvm);
0287     void (*destroy_vm)(struct kvm *kvm);
0288     int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
0289     int (*emulate_op)(struct kvm_vcpu *vcpu,
0290               unsigned int inst, int *advance);
0291     int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
0292     int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
0293     void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
0294     long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
0295                   unsigned long arg);
0296     int (*hcall_implemented)(unsigned long hcall);
0297     int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
0298                        struct irq_bypass_producer *);
0299     void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
0300                     struct irq_bypass_producer *);
0301     int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
0302     int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
0303     int (*set_smt_mode)(struct kvm *kvm, unsigned long mode,
0304                 unsigned long flags);
0305     void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr);
0306     int (*enable_nested)(struct kvm *kvm);
0307     int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
0308                    int size);
0309     int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
0310                   int size);
0311     int (*enable_svm)(struct kvm *kvm);
0312     int (*svm_off)(struct kvm *kvm);
0313     int (*enable_dawr1)(struct kvm *kvm);
0314     bool (*hash_v3_possible)(void);
0315     int (*create_vm_debugfs)(struct kvm *kvm);
0316     int (*create_vcpu_debugfs)(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry);
0317 };
0318 
0319 extern struct kvmppc_ops *kvmppc_hv_ops;
0320 extern struct kvmppc_ops *kvmppc_pr_ops;
0321 
0322 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
0323                 enum instruction_fetch_type type, u32 *inst)
0324 {
0325     int ret = EMULATE_DONE;
0326     u32 fetched_inst;
0327 
0328     /* Load the instruction manually if it failed to do so in the
0329      * exit path */
0330     if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
0331         ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
0332 
0333     /*  Write fetch_failed unswapped if the fetch failed */
0334     if (ret == EMULATE_DONE)
0335         fetched_inst = kvmppc_need_byteswap(vcpu) ?
0336                 swab32(vcpu->arch.last_inst) :
0337                 vcpu->arch.last_inst;
0338     else
0339         fetched_inst = vcpu->arch.last_inst;
0340 
0341     *inst = fetched_inst;
0342     return ret;
0343 }
0344 
0345 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
0346 {
0347     return kvm->arch.kvm_ops == kvmppc_hv_ops;
0348 }
0349 
0350 extern int kvmppc_hwrng_present(void);
0351 
0352 /*
0353  * Cuts out inst bits with ordering according to spec.
0354  * That means the leftmost bit is zero. All given bits are included.
0355  */
0356 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
0357 {
0358     u32 r;
0359     u32 mask;
0360 
0361     BUG_ON(msb > lsb);
0362 
0363     mask = (1 << (lsb - msb + 1)) - 1;
0364     r = (inst >> (63 - lsb)) & mask;
0365 
0366     return r;
0367 }
0368 
0369 /*
0370  * Replaces inst bits with ordering according to spec.
0371  */
0372 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
0373 {
0374     u32 r;
0375     u32 mask;
0376 
0377     BUG_ON(msb > lsb);
0378 
0379     mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
0380     r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
0381 
0382     return r;
0383 }
0384 
0385 #define one_reg_size(id)    \
0386     (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
0387 
0388 #define get_reg_val(id, reg)    ({      \
0389     union kvmppc_one_reg __u;       \
0390     switch (one_reg_size(id)) {     \
0391     case 4: __u.wval = (reg); break;    \
0392     case 8: __u.dval = (reg); break;    \
0393     default: BUG();             \
0394     }                   \
0395     __u;                    \
0396 })
0397 
0398 
0399 #define set_reg_val(id, val)    ({      \
0400     u64 __v;                \
0401     switch (one_reg_size(id)) {     \
0402     case 4: __v = (val).wval; break;    \
0403     case 8: __v = (val).dval; break;    \
0404     default: BUG();             \
0405     }                   \
0406     __v;                    \
0407 })
0408 
0409 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
0410 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
0411 
0412 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
0413 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
0414 
0415 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
0416 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
0417 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
0418 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
0419 
0420 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
0421 
0422 struct openpic;
0423 
0424 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
0425 extern void kvm_cma_reserve(void) __init;
0426 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
0427 {
0428     paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr;
0429 }
0430 
0431 static inline void kvmppc_set_xive_tima(int cpu,
0432                     unsigned long phys_addr,
0433                     void __iomem *virt_addr)
0434 {
0435     paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
0436     paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr;
0437 }
0438 
0439 static inline u32 kvmppc_get_xics_latch(void)
0440 {
0441     u32 xirr;
0442 
0443     xirr = get_paca()->kvm_hstate.saved_xirr;
0444     get_paca()->kvm_hstate.saved_xirr = 0;
0445     return xirr;
0446 }
0447 
0448 /*
0449  * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to
0450  * a CPU thread that's running/napping inside of a guest is by default regarded
0451  * as a request to wake the CPU (if needed) and continue execution within the
0452  * guest, potentially to process new state like externally-generated
0453  * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI).
0454  *
0455  * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called
0456  * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the
0457  * target CPU's PACA. To avoid unnecessary exits to the host, this flag should
0458  * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on
0459  * the receiving side prior to processing the IPI work.
0460  *
0461  * NOTE:
0462  *
0463  * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi().
0464  * This is to guard against sequences such as the following:
0465  *
0466  *      CPU
0467  *        X: smp_muxed_ipi_set_message():
0468  *        X:   smp_mb()
0469  *        X:   message[RESCHEDULE] = 1
0470  *        X: doorbell_global_ipi(42):
0471  *        X:   kvmppc_set_host_ipi(42)
0472  *        X:   ppc_msgsnd_sync()/smp_mb()
0473  *        X:   ppc_msgsnd() -> 42
0474  *       42: doorbell_exception(): // from CPU X
0475  *       42:   ppc_msgsync()
0476  *      105: smp_muxed_ipi_set_message():
0477  *      105:   smb_mb()
0478  *           // STORE DEFERRED DUE TO RE-ORDERING
0479  *    --105:   message[CALL_FUNCTION] = 1
0480  *    | 105: doorbell_global_ipi(42):
0481  *    | 105:   kvmppc_set_host_ipi(42)
0482  *    |  42:   kvmppc_clear_host_ipi(42)
0483  *    |  42: smp_ipi_demux_relaxed()
0484  *    |  42: // returns to executing guest
0485  *    |      // RE-ORDERED STORE COMPLETES
0486  *    ->105:   message[CALL_FUNCTION] = 1
0487  *      105:   ppc_msgsnd_sync()/smp_mb()
0488  *      105:   ppc_msgsnd() -> 42
0489  *       42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored
0490  *      105: // hangs waiting on 42 to process messages/call_single_queue
0491  *
0492  * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is
0493  * to guard against sequences such as the following (as well as to create
0494  * a read-side pairing with the barrier in kvmppc_set_host_ipi()):
0495  *
0496  *      CPU
0497  *        X: smp_muxed_ipi_set_message():
0498  *        X:   smp_mb()
0499  *        X:   message[RESCHEDULE] = 1
0500  *        X: doorbell_global_ipi(42):
0501  *        X:   kvmppc_set_host_ipi(42)
0502  *        X:   ppc_msgsnd_sync()/smp_mb()
0503  *        X:   ppc_msgsnd() -> 42
0504  *       42: doorbell_exception(): // from CPU X
0505  *       42:   ppc_msgsync()
0506  *           // STORE DEFERRED DUE TO RE-ORDERING
0507  *    -- 42:   kvmppc_clear_host_ipi(42)
0508  *    |  42: smp_ipi_demux_relaxed()
0509  *    | 105: smp_muxed_ipi_set_message():
0510  *    | 105:   smb_mb()
0511  *    | 105:   message[CALL_FUNCTION] = 1
0512  *    | 105: doorbell_global_ipi(42):
0513  *    | 105:   kvmppc_set_host_ipi(42)
0514  *    |      // RE-ORDERED STORE COMPLETES
0515  *    -> 42:   kvmppc_clear_host_ipi(42)
0516  *       42: // returns to executing guest
0517  *      105:   ppc_msgsnd_sync()/smp_mb()
0518  *      105:   ppc_msgsnd() -> 42
0519  *       42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored
0520  *      105: // hangs waiting on 42 to process messages/call_single_queue
0521  */
0522 static inline void kvmppc_set_host_ipi(int cpu)
0523 {
0524     /*
0525      * order stores of IPI messages vs. setting of host_ipi flag
0526      *
0527      * pairs with the barrier in kvmppc_clear_host_ipi()
0528      */
0529     smp_mb();
0530     paca_ptrs[cpu]->kvm_hstate.host_ipi = 1;
0531 }
0532 
0533 static inline void kvmppc_clear_host_ipi(int cpu)
0534 {
0535     paca_ptrs[cpu]->kvm_hstate.host_ipi = 0;
0536     /*
0537      * order clearing of host_ipi flag vs. processing of IPI messages
0538      *
0539      * pairs with the barrier in kvmppc_set_host_ipi()
0540      */
0541     smp_mb();
0542 }
0543 
0544 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
0545 {
0546     vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
0547 }
0548 
0549 extern void kvm_hv_vm_activated(void);
0550 extern void kvm_hv_vm_deactivated(void);
0551 extern bool kvm_hv_mode_active(void);
0552 
0553 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu);
0554 
0555 #else
0556 static inline void __init kvm_cma_reserve(void)
0557 {}
0558 
0559 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
0560 {}
0561 
0562 static inline void kvmppc_set_xive_tima(int cpu,
0563                     unsigned long phys_addr,
0564                     void __iomem *virt_addr)
0565 {}
0566 
0567 static inline u32 kvmppc_get_xics_latch(void)
0568 {
0569     return 0;
0570 }
0571 
0572 static inline void kvmppc_set_host_ipi(int cpu)
0573 {}
0574 
0575 static inline void kvmppc_clear_host_ipi(int cpu)
0576 {}
0577 
0578 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
0579 {
0580     kvm_vcpu_kick(vcpu);
0581 }
0582 
0583 static inline bool kvm_hv_mode_active(void)     { return false; }
0584 
0585 #endif
0586 
0587 #ifdef CONFIG_PPC_PSERIES
0588 static inline bool kvmhv_on_pseries(void)
0589 {
0590     return !cpu_has_feature(CPU_FTR_HVMODE);
0591 }
0592 #else
0593 static inline bool kvmhv_on_pseries(void)
0594 {
0595     return false;
0596 }
0597 #endif
0598 
0599 #ifdef CONFIG_KVM_XICS
0600 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
0601 {
0602     return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
0603 }
0604 
0605 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
0606                 struct kvm *kvm)
0607 {
0608     if (kvm && kvm_irq_bypass)
0609         return kvm->arch.pimap;
0610     return NULL;
0611 }
0612 
0613 extern void kvmppc_alloc_host_rm_ops(void);
0614 extern void kvmppc_free_host_rm_ops(void);
0615 extern void kvmppc_free_pimap(struct kvm *kvm);
0616 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
0617 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
0618 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
0619 extern int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req);
0620 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
0621 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
0622 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
0623             struct kvm_vcpu *vcpu, u32 cpu);
0624 extern void kvmppc_xics_ipi_action(void);
0625 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
0626                    unsigned long host_irq);
0627 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
0628                    unsigned long host_irq);
0629 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
0630                     struct kvmppc_irq_map *irq_map,
0631                     struct kvmppc_passthru_irqmap *pimap,
0632                     bool *again);
0633 
0634 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
0635                    int level, bool line_status);
0636 
0637 extern int h_ipi_redirect;
0638 #else
0639 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
0640                 struct kvm *kvm)
0641     { return NULL; }
0642 static inline void kvmppc_alloc_host_rm_ops(void) {}
0643 static inline void kvmppc_free_host_rm_ops(void) {}
0644 static inline void kvmppc_free_pimap(struct kvm *kvm) {}
0645 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
0646     { return 0; }
0647 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
0648     { return 0; }
0649 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
0650 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
0651     { return 0; }
0652 static inline int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req)
0653     { return 0; }
0654 #endif
0655 
0656 #ifdef CONFIG_KVM_XIVE
0657 /*
0658  * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
0659  * ie. P9 new interrupt controller, while the second "xive" is the legacy
0660  * "eXternal Interrupt Vector Entry" which is the configuration of an
0661  * interrupt on the "xics" interrupt controller on P8 and earlier. Those
0662  * two function consume or produce a legacy "XIVE" state from the
0663  * new "XIVE" interrupt controller.
0664  */
0665 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
0666                 u32 priority);
0667 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
0668                 u32 *priority);
0669 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
0670 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
0671 
0672 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
0673                     struct kvm_vcpu *vcpu, u32 cpu);
0674 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
0675 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
0676                   unsigned long host_irq);
0677 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
0678                   unsigned long host_irq);
0679 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
0680 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
0681 
0682 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
0683                    int level, bool line_status);
0684 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu);
0685 extern void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu);
0686 extern bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu);
0687 
0688 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
0689 {
0690     return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE;
0691 }
0692 
0693 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
0694                        struct kvm_vcpu *vcpu, u32 cpu);
0695 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu);
0696 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
0697                      union kvmppc_one_reg *val);
0698 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
0699                      union kvmppc_one_reg *val);
0700 extern bool kvmppc_xive_native_supported(void);
0701 
0702 #else
0703 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
0704                        u32 priority) { return -1; }
0705 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
0706                        u32 *priority) { return -1; }
0707 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
0708 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
0709 
0710 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
0711                        struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
0712 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
0713 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
0714                      struct irq_desc *host_desc) { return -ENODEV; }
0715 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
0716                      struct irq_desc *host_desc) { return -ENODEV; }
0717 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
0718 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
0719 
0720 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
0721                       int level, bool line_status) { return -ENODEV; }
0722 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { }
0723 static inline void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu) { }
0724 static inline bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu) { return true; }
0725 
0726 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
0727     { return 0; }
0728 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
0729               struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
0730 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
0731 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
0732                         union kvmppc_one_reg *val)
0733 { return 0; }
0734 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
0735                         union kvmppc_one_reg *val)
0736 { return -ENOENT; }
0737 
0738 #endif /* CONFIG_KVM_XIVE */
0739 
0740 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER)
0741 static inline bool xics_on_xive(void)
0742 {
0743     return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE);
0744 }
0745 #else
0746 static inline bool xics_on_xive(void)
0747 {
0748     return false;
0749 }
0750 #endif
0751 
0752 /*
0753  * Prototypes for functions called only from assembler code.
0754  * Having prototypes reduces sparse errors.
0755  */
0756 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
0757              unsigned long ioba, unsigned long tce);
0758 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
0759                   unsigned long liobn, unsigned long ioba,
0760                   unsigned long tce_list, unsigned long npages);
0761 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
0762                unsigned long liobn, unsigned long ioba,
0763                unsigned long tce_value, unsigned long npages);
0764 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
0765                             unsigned int yield_count);
0766 long kvmppc_rm_h_random(struct kvm_vcpu *vcpu);
0767 void kvmhv_commence_exit(int trap);
0768 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
0769 void kvmppc_subcore_enter_guest(void);
0770 void kvmppc_subcore_exit_guest(void);
0771 long kvmppc_realmode_hmi_handler(void);
0772 long kvmppc_p9_realmode_hmi_handler(struct kvm_vcpu *vcpu);
0773 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
0774                     long pte_index, unsigned long pteh, unsigned long ptel);
0775 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
0776                      unsigned long pte_index, unsigned long avpn);
0777 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
0778 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
0779                       unsigned long pte_index, unsigned long avpn);
0780 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
0781                    unsigned long pte_index);
0782 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
0783                         unsigned long pte_index);
0784 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
0785                         unsigned long pte_index);
0786 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags,
0787                unsigned long dest, unsigned long src);
0788 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
0789                           unsigned long slb_v, unsigned int status, bool data);
0790 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu);
0791 
0792 /*
0793  * Host-side operations we want to set up while running in real
0794  * mode in the guest operating on the xics.
0795  * Currently only VCPU wakeup is supported.
0796  */
0797 
0798 union kvmppc_rm_state {
0799     unsigned long raw;
0800     struct {
0801         u32 in_host;
0802         u32 rm_action;
0803     };
0804 };
0805 
0806 struct kvmppc_host_rm_core {
0807     union kvmppc_rm_state rm_state;
0808     void *rm_data;
0809     char pad[112];
0810 };
0811 
0812 struct kvmppc_host_rm_ops {
0813     struct kvmppc_host_rm_core  *rm_core;
0814     void        (*vcpu_kick)(struct kvm_vcpu *vcpu);
0815 };
0816 
0817 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
0818 
0819 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
0820 {
0821 #ifdef CONFIG_KVM_BOOKE_HV
0822     return mfspr(SPRN_GEPR);
0823 #elif defined(CONFIG_BOOKE)
0824     return vcpu->arch.epr;
0825 #else
0826     return 0;
0827 #endif
0828 }
0829 
0830 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
0831 {
0832 #ifdef CONFIG_KVM_BOOKE_HV
0833     mtspr(SPRN_GEPR, epr);
0834 #elif defined(CONFIG_BOOKE)
0835     vcpu->arch.epr = epr;
0836 #endif
0837 }
0838 
0839 #ifdef CONFIG_KVM_MPIC
0840 
0841 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
0842 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
0843                  u32 cpu);
0844 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
0845 
0846 #else
0847 
0848 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
0849 {
0850 }
0851 
0852 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
0853         struct kvm_vcpu *vcpu, u32 cpu)
0854 {
0855     return -EINVAL;
0856 }
0857 
0858 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
0859         struct kvm_vcpu *vcpu)
0860 {
0861 }
0862 
0863 #endif /* CONFIG_KVM_MPIC */
0864 
0865 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
0866                   struct kvm_config_tlb *cfg);
0867 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
0868                  struct kvm_dirty_tlb *cfg);
0869 
0870 long kvmppc_alloc_lpid(void);
0871 void kvmppc_free_lpid(long lpid);
0872 void kvmppc_init_lpid(unsigned long nr_lpids);
0873 
0874 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
0875 {
0876     struct page *page;
0877     /*
0878      * We can only access pages that the kernel maps
0879      * as memory. Bail out for unmapped ones.
0880      */
0881     if (!pfn_valid(pfn))
0882         return;
0883 
0884     /* Clear i-cache for new pages */
0885     page = pfn_to_page(pfn);
0886     if (!test_bit(PG_dcache_clean, &page->flags)) {
0887         flush_dcache_icache_page(page);
0888         set_bit(PG_dcache_clean, &page->flags);
0889     }
0890 }
0891 
0892 /*
0893  * Shared struct helpers. The shared struct can be little or big endian,
0894  * depending on the guest endianness. So expose helpers to all of them.
0895  */
0896 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
0897 {
0898 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
0899     /* Only Book3S_64 PR supports bi-endian for now */
0900     return vcpu->arch.shared_big_endian;
0901 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
0902     /* Book3s_64 HV on little endian is always little endian */
0903     return false;
0904 #else
0905     return true;
0906 #endif
0907 }
0908 
0909 #define SPRNG_WRAPPER_GET(reg, bookehv_spr)             \
0910 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu)     \
0911 {                                   \
0912     return mfspr(bookehv_spr);                  \
0913 }                                   \
0914 
0915 #define SPRNG_WRAPPER_SET(reg, bookehv_spr)             \
0916 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val)   \
0917 {                                   \
0918     mtspr(bookehv_spr, val);                        \
0919 }                                   \
0920 
0921 #define SHARED_WRAPPER_GET(reg, size)                   \
0922 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu)       \
0923 {                                   \
0924     if (kvmppc_shared_big_endian(vcpu))             \
0925            return be##size##_to_cpu(vcpu->arch.shared->reg);    \
0926     else                                \
0927            return le##size##_to_cpu(vcpu->arch.shared->reg);    \
0928 }                                   \
0929 
0930 #define SHARED_WRAPPER_SET(reg, size)                   \
0931 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
0932 {                                   \
0933     if (kvmppc_shared_big_endian(vcpu))             \
0934            vcpu->arch.shared->reg = cpu_to_be##size(val);       \
0935     else                                \
0936            vcpu->arch.shared->reg = cpu_to_le##size(val);       \
0937 }                                   \
0938 
0939 #define SHARED_WRAPPER(reg, size)                   \
0940     SHARED_WRAPPER_GET(reg, size)                   \
0941     SHARED_WRAPPER_SET(reg, size)                   \
0942 
0943 #define SPRNG_WRAPPER(reg, bookehv_spr)                 \
0944     SPRNG_WRAPPER_GET(reg, bookehv_spr)             \
0945     SPRNG_WRAPPER_SET(reg, bookehv_spr)             \
0946 
0947 #ifdef CONFIG_KVM_BOOKE_HV
0948 
0949 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)            \
0950     SPRNG_WRAPPER(reg, bookehv_spr)                 \
0951 
0952 #else
0953 
0954 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)            \
0955     SHARED_WRAPPER(reg, size)                   \
0956 
0957 #endif
0958 
0959 SHARED_WRAPPER(critical, 64)
0960 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
0961 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
0962 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
0963 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
0964 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
0965 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
0966 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
0967 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
0968 SHARED_WRAPPER_GET(msr, 64)
0969 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
0970 {
0971     if (kvmppc_shared_big_endian(vcpu))
0972            vcpu->arch.shared->msr = cpu_to_be64(val);
0973     else
0974            vcpu->arch.shared->msr = cpu_to_le64(val);
0975 }
0976 SHARED_WRAPPER(dsisr, 32)
0977 SHARED_WRAPPER(int_pending, 32)
0978 SHARED_WRAPPER(sprg4, 64)
0979 SHARED_WRAPPER(sprg5, 64)
0980 SHARED_WRAPPER(sprg6, 64)
0981 SHARED_WRAPPER(sprg7, 64)
0982 
0983 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
0984 {
0985     if (kvmppc_shared_big_endian(vcpu))
0986            return be32_to_cpu(vcpu->arch.shared->sr[nr]);
0987     else
0988            return le32_to_cpu(vcpu->arch.shared->sr[nr]);
0989 }
0990 
0991 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
0992 {
0993     if (kvmppc_shared_big_endian(vcpu))
0994            vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
0995     else
0996            vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
0997 }
0998 
0999 /*
1000  * Please call after prepare_to_enter. This function puts the lazy ee and irq
1001  * disabled tracking state back to normal mode, without actually enabling
1002  * interrupts.
1003  */
1004 static inline void kvmppc_fix_ee_before_entry(void)
1005 {
1006     trace_hardirqs_on();
1007 
1008 #ifdef CONFIG_PPC64
1009     /*
1010      * To avoid races, the caller must have gone directly from having
1011      * interrupts fully-enabled to hard-disabled.
1012      */
1013     WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
1014 
1015     /* Only need to enable IRQs by hard enabling them after this */
1016     local_paca->irq_happened = 0;
1017     irq_soft_mask_set(IRQS_ENABLED);
1018 #endif
1019 }
1020 
1021 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
1022 {
1023     ulong ea;
1024     ulong msr_64bit = 0;
1025 
1026     ea = kvmppc_get_gpr(vcpu, rb);
1027     if (ra)
1028         ea += kvmppc_get_gpr(vcpu, ra);
1029 
1030 #if defined(CONFIG_PPC_BOOK3E_64)
1031     msr_64bit = MSR_CM;
1032 #elif defined(CONFIG_PPC_BOOK3S_64)
1033     msr_64bit = MSR_SF;
1034 #endif
1035 
1036     if (!(kvmppc_get_msr(vcpu) & msr_64bit))
1037         ea = (uint32_t)ea;
1038 
1039     return ea;
1040 }
1041 
1042 extern void xics_wake_cpu(int cpu);
1043 
1044 #endif /* __POWERPC_KVM_PPC_H__ */
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