arch/powerpc/include/asm/kvm

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This source file includes following definitions.
kvmppc_get_last_inst
is_kvmppc_hv_enabled
kvmppc_get_field
kvmppc_set_field
kvm_cma_reserve
kvmppc_set_xive_tima
kvmppc_get_xics_latch
kvmppc_set_host_ipi
kvmppc_clear_host_ipi
kvmppc_fast_vcpu_kick
kvm_cma_reserve
kvmppc_set_xics_phys
kvmppc_set_xive_tima
kvmppc_get_xics_latch
kvmppc_set_host_ipi
kvmppc_clear_host_ipi
kvmppc_fast_vcpu_kick
kvm_hv_mode_active
kvmppc_xics_enabled
kvmppc_get_passthru_irqmap
kvmppc_get_passthru_irqmap
kvmppc_alloc_host_rm_ops
kvmppc_free_host_rm_ops
kvmppc_free_pimap
kvmppc_xics_rm_complete
kvmppc_xics_enabled
kvmppc_xics_free_icp
kvmppc_xics_hcall
kvmppc_xive_enabled
kvmppc_xive_set_xive
kvmppc_xive_get_xive
kvmppc_xive_int_on
kvmppc_xive_int_off
kvmppc_xive_init_module
kvmppc_xive_exit_module
kvmppc_xive_connect_vcpu
kvmppc_xive_cleanup_vcpu
kvmppc_xive_set_mapped
kvmppc_xive_clr_mapped
kvmppc_xive_get_icp
kvmppc_xive_set_icp
kvmppc_xive_set_irq
kvmppc_xive_push_vcpu
kvmppc_xive_enabled
kvmppc_xive_native_connect_vcpu
kvmppc_xive_native_cleanup_vcpu
kvmppc_xive_native_init_module
kvmppc_xive_native_exit_module
kvmppc_xive_native_get_vp
kvmppc_xive_native_set_vp
xics_on_xive
xics_on_xive
kvmppc_get_epr
kvmppc_set_epr
kvmppc_mpic_set_epr
kvmppc_mpic_connect_vcpu
kvmppc_mpic_disconnect_vcpu
kvmppc_mmu_flush_icache
kvmppc_shared_big_endian
SHARED_WRAPPER
SHARED_WRAPPER
kvmppc_set_sr
kvmppc_fix_ee_before_entry
kvmppc_get_ea_indexed
   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *
   4  * Copyright IBM Corp. 2008
   5  *
   6  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
   7  */
   8 
   9 #ifndef __POWERPC_KVM_PPC_H__
  10 #define __POWERPC_KVM_PPC_H__
  11 
  12 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header
  13  * dependencies. */
  14 
  15 #include <linux/mutex.h>
  16 #include <linux/timer.h>
  17 #include <linux/types.h>
  18 #include <linux/kvm_types.h>
  19 #include <linux/kvm_host.h>
  20 #include <linux/bug.h>
  21 #ifdef CONFIG_PPC_BOOK3S
  22 #include <asm/kvm_book3s.h>
  23 #else
  24 #include <asm/kvm_booke.h>
  25 #endif
  26 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
  27 #include <asm/paca.h>
  28 #include <asm/xive.h>
  29 #include <asm/cpu_has_feature.h>
  30 #endif
  31 
  32 /*
  33  * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
  34  * for supporting software breakpoint.
  35  */
  36 #define KVMPPC_INST_SW_BREAKPOINT       0x00dddd00
  37 
  38 enum emulation_result {
  39         EMULATE_DONE,         /* no further processing */
  40         EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
  41         EMULATE_FAIL,         /* can't emulate this instruction */
  42         EMULATE_AGAIN,        /* something went wrong. go again */
  43         EMULATE_EXIT_USER,    /* emulation requires exit to user-space */
  44 };
  45 
  46 enum instruction_fetch_type {
  47         INST_GENERIC,
  48         INST_SC,                /* system call */
  49 };
  50 
  51 enum xlate_instdata {
  52         XLATE_INST,             /* translate instruction address */
  53         XLATE_DATA              /* translate data address */
  54 };
  55 
  56 enum xlate_readwrite {
  57         XLATE_READ,             /* check for read permissions */
  58         XLATE_WRITE             /* check for write permissions */
  59 };
  60 
  61 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  62 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  63 extern void kvmppc_handler_highmem(void);
  64 
  65 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
  66 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
  67                               unsigned int rt, unsigned int bytes,
  68                               int is_default_endian);
  69 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
  70                                unsigned int rt, unsigned int bytes,
  71                                int is_default_endian);
  72 extern int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
  73                                 unsigned int rt, unsigned int bytes,
  74                         int is_default_endian, int mmio_sign_extend);
  75 extern int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
  76                 unsigned int rt, unsigned int bytes, int is_default_endian);
  77 extern int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
  78                 unsigned int rs, unsigned int bytes, int is_default_endian);
  79 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
  80                                u64 val, unsigned int bytes,
  81                                int is_default_endian);
  82 extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
  83                                 int rs, unsigned int bytes,
  84                                 int is_default_endian);
  85 
  86 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
  87                                  enum instruction_fetch_type type, u32 *inst);
  88 
  89 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
  90                      bool data);
  91 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
  92                      bool data);
  93 extern int kvmppc_emulate_instruction(struct kvm_run *run,
  94                                       struct kvm_vcpu *vcpu);
  95 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
  96 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
  97 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
  98 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
  99 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
 100 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
 101 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
 102 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
 103 
 104 /* Core-specific hooks */
 105 
 106 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
 107                            unsigned int gtlb_idx);
 108 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
 109 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
 110 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
 111 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
 112 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 113 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 114 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
 115                               gva_t eaddr);
 116 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
 117 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
 118 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
 119                         enum xlate_instdata xlid, enum xlate_readwrite xlrw,
 120                         struct kvmppc_pte *pte);
 121 
 122 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
 123                                                 unsigned int id);
 124 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
 125 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
 126 extern int kvmppc_core_check_processor_compat(void);
 127 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
 128                                       struct kvm_translation *tr);
 129 
 130 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 131 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
 132 
 133 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
 134 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
 135 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags);
 136 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
 137 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
 138 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
 139 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
 140 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
 141 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
 142 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 143                                        struct kvm_interrupt *irq);
 144 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
 145 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
 146                                         ulong esr_flags);
 147 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
 148                                            ulong dear_flags,
 149                                            ulong esr_flags);
 150 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
 151 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
 152                                            ulong esr_flags);
 153 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
 154 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
 155 
 156 extern int kvmppc_booke_init(void);
 157 extern void kvmppc_booke_exit(void);
 158 
 159 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
 160 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
 161 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
 162 
 163 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
 164 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
 165 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
 166 extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
 167 extern void kvmppc_rmap_reset(struct kvm *kvm);
 168 extern long kvmppc_prepare_vrma(struct kvm *kvm,
 169                                 struct kvm_userspace_memory_region *mem);
 170 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
 171                         struct kvm_memory_slot *memslot, unsigned long porder);
 172 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
 173 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
 174                 struct iommu_group *grp);
 175 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
 176                 struct iommu_group *grp);
 177 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
 178 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
 179 extern void kvmppc_setup_partition_table(struct kvm *kvm);
 180 
 181 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 182                                 struct kvm_create_spapr_tce_64 *args);
 183 extern struct kvmppc_spapr_tce_table *kvmppc_find_table(
 184                 struct kvm *kvm, unsigned long liobn);
 185 #define kvmppc_ioba_validate(stt, ioba, npages)                         \
 186                 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \
 187                                 (stt)->size, (ioba), (npages)) ?        \
 188                                 H_PARAMETER : H_SUCCESS)
 189 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 190                              unsigned long ioba, unsigned long tce);
 191 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 192                 unsigned long liobn, unsigned long ioba,
 193                 unsigned long tce_list, unsigned long npages);
 194 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
 195                 unsigned long liobn, unsigned long ioba,
 196                 unsigned long tce_value, unsigned long npages);
 197 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 198                              unsigned long ioba);
 199 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
 200 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
 201 extern int kvmppc_core_init_vm(struct kvm *kvm);
 202 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
 203 extern void kvmppc_core_free_memslot(struct kvm *kvm,
 204                                      struct kvm_memory_slot *free,
 205                                      struct kvm_memory_slot *dont);
 206 extern int kvmppc_core_create_memslot(struct kvm *kvm,
 207                                       struct kvm_memory_slot *slot,
 208                                       unsigned long npages);
 209 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 210                                 struct kvm_memory_slot *memslot,
 211                                 const struct kvm_userspace_memory_region *mem);
 212 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
 213                                 const struct kvm_userspace_memory_region *mem,
 214                                 const struct kvm_memory_slot *old,
 215                                 const struct kvm_memory_slot *new,
 216                                 enum kvm_mr_change change);
 217 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
 218                                       struct kvm_ppc_smmu_info *info);
 219 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
 220                                       struct kvm_memory_slot *memslot);
 221 
 222 extern int kvmppc_bookehv_init(void);
 223 extern void kvmppc_bookehv_exit(void);
 224 
 225 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
 226 
 227 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
 228 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
 229                                             struct kvm_ppc_resize_hpt *rhpt);
 230 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
 231                                            struct kvm_ppc_resize_hpt *rhpt);
 232 
 233 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
 234 
 235 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
 236 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
 237 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
 238 
 239 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
 240                                 u32 priority);
 241 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
 242                                 u32 *priority);
 243 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
 244 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
 245 
 246 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
 247 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
 248 
 249 union kvmppc_one_reg {
 250         u32     wval;
 251         u64     dval;
 252         vector128 vval;
 253         u64     vsxval[2];
 254         u32     vsx32val[4];
 255         u16     vsx16val[8];
 256         u8      vsx8val[16];
 257         struct {
 258                 u64     addr;
 259                 u64     length;
 260         }       vpaval;
 261         u64     xive_timaval[2];
 262 };
 263 
 264 struct kvmppc_ops {
 265         struct module *owner;
 266         int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 267         int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 268         int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
 269                            union kvmppc_one_reg *val);
 270         int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
 271                            union kvmppc_one_reg *val);
 272         void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
 273         void (*vcpu_put)(struct kvm_vcpu *vcpu);
 274         void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
 275         int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
 276         struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
 277         void (*vcpu_free)(struct kvm_vcpu *vcpu);
 278         int (*check_requests)(struct kvm_vcpu *vcpu);
 279         int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
 280         void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
 281         int (*prepare_memory_region)(struct kvm *kvm,
 282                                      struct kvm_memory_slot *memslot,
 283                                      const struct kvm_userspace_memory_region *mem);
 284         void (*commit_memory_region)(struct kvm *kvm,
 285                                      const struct kvm_userspace_memory_region *mem,
 286                                      const struct kvm_memory_slot *old,
 287                                      const struct kvm_memory_slot *new,
 288                                      enum kvm_mr_change change);
 289         int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
 290                            unsigned long end);
 291         int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
 292         int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
 293         void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
 294         void (*mmu_destroy)(struct kvm_vcpu *vcpu);
 295         void (*free_memslot)(struct kvm_memory_slot *free,
 296                              struct kvm_memory_slot *dont);
 297         int (*create_memslot)(struct kvm_memory_slot *slot,
 298                               unsigned long npages);
 299         int (*init_vm)(struct kvm *kvm);
 300         void (*destroy_vm)(struct kvm *kvm);
 301         int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
 302         int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
 303                           unsigned int inst, int *advance);
 304         int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
 305         int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
 306         void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
 307         long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
 308                               unsigned long arg);
 309         int (*hcall_implemented)(unsigned long hcall);
 310         int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
 311                                        struct irq_bypass_producer *);
 312         void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
 313                                         struct irq_bypass_producer *);
 314         int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
 315         int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
 316         int (*set_smt_mode)(struct kvm *kvm, unsigned long mode,
 317                             unsigned long flags);
 318         void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr);
 319         int (*enable_nested)(struct kvm *kvm);
 320         int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
 321                                int size);
 322         int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
 323                               int size);
 324 };
 325 
 326 extern struct kvmppc_ops *kvmppc_hv_ops;
 327 extern struct kvmppc_ops *kvmppc_pr_ops;
 328 
 329 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
 330                                 enum instruction_fetch_type type, u32 *inst)
 331 {
 332         int ret = EMULATE_DONE;
 333         u32 fetched_inst;
 334 
 335         /* Load the instruction manually if it failed to do so in the
 336          * exit path */
 337         if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
 338                 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
 339 
 340         /*  Write fetch_failed unswapped if the fetch failed */
 341         if (ret == EMULATE_DONE)
 342                 fetched_inst = kvmppc_need_byteswap(vcpu) ?
 343                                 swab32(vcpu->arch.last_inst) :
 344                                 vcpu->arch.last_inst;
 345         else
 346                 fetched_inst = vcpu->arch.last_inst;
 347 
 348         *inst = fetched_inst;
 349         return ret;
 350 }
 351 
 352 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
 353 {
 354         return kvm->arch.kvm_ops == kvmppc_hv_ops;
 355 }
 356 
 357 extern int kvmppc_hwrng_present(void);
 358 
 359 /*
 360  * Cuts out inst bits with ordering according to spec.
 361  * That means the leftmost bit is zero. All given bits are included.
 362  */
 363 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
 364 {
 365         u32 r;
 366         u32 mask;
 367 
 368         BUG_ON(msb > lsb);
 369 
 370         mask = (1 << (lsb - msb + 1)) - 1;
 371         r = (inst >> (63 - lsb)) & mask;
 372 
 373         return r;
 374 }
 375 
 376 /*
 377  * Replaces inst bits with ordering according to spec.
 378  */
 379 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
 380 {
 381         u32 r;
 382         u32 mask;
 383 
 384         BUG_ON(msb > lsb);
 385 
 386         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
 387         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
 388 
 389         return r;
 390 }
 391 
 392 #define one_reg_size(id)        \
 393         (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
 394 
 395 #define get_reg_val(id, reg)    ({              \
 396         union kvmppc_one_reg __u;               \
 397         switch (one_reg_size(id)) {             \
 398         case 4: __u.wval = (reg); break;        \
 399         case 8: __u.dval = (reg); break;        \
 400         default: BUG();                         \
 401         }                                       \
 402         __u;                                    \
 403 })
 404 
 405 
 406 #define set_reg_val(id, val)    ({              \
 407         u64 __v;                                \
 408         switch (one_reg_size(id)) {             \
 409         case 4: __v = (val).wval; break;        \
 410         case 8: __v = (val).dval; break;        \
 411         default: BUG();                         \
 412         }                                       \
 413         __v;                                    \
 414 })
 415 
 416 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 417 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 418 
 419 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 420 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 421 
 422 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 423 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 424 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
 425 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
 426 
 427 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
 428 
 429 struct openpic;
 430 
 431 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 432 extern void kvm_cma_reserve(void) __init;
 433 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 434 {
 435         paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr;
 436 }
 437 
 438 static inline void kvmppc_set_xive_tima(int cpu,
 439                                         unsigned long phys_addr,
 440                                         void __iomem *virt_addr)
 441 {
 442         paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
 443         paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr;
 444 }
 445 
 446 static inline u32 kvmppc_get_xics_latch(void)
 447 {
 448         u32 xirr;
 449 
 450         xirr = get_paca()->kvm_hstate.saved_xirr;
 451         get_paca()->kvm_hstate.saved_xirr = 0;
 452         return xirr;
 453 }
 454 
 455 /*
 456  * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to
 457  * a CPU thread that's running/napping inside of a guest is by default regarded
 458  * as a request to wake the CPU (if needed) and continue execution within the
 459  * guest, potentially to process new state like externally-generated
 460  * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI).
 461  *
 462  * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called
 463  * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the
 464  * target CPU's PACA. To avoid unnecessary exits to the host, this flag should
 465  * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on
 466  * the receiving side prior to processing the IPI work.
 467  *
 468  * NOTE:
 469  *
 470  * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi().
 471  * This is to guard against sequences such as the following:
 472  *
 473  *      CPU
 474  *        X: smp_muxed_ipi_set_message():
 475  *        X:   smp_mb()
 476  *        X:   message[RESCHEDULE] = 1
 477  *        X: doorbell_global_ipi(42):
 478  *        X:   kvmppc_set_host_ipi(42)
 479  *        X:   ppc_msgsnd_sync()/smp_mb()
 480  *        X:   ppc_msgsnd() -> 42
 481  *       42: doorbell_exception(): // from CPU X
 482  *       42:   ppc_msgsync()
 483  *      105: smp_muxed_ipi_set_message():
 484  *      105:   smb_mb()
 485  *           // STORE DEFERRED DUE TO RE-ORDERING
 486  *    --105:   message[CALL_FUNCTION] = 1
 487  *    | 105: doorbell_global_ipi(42):
 488  *    | 105:   kvmppc_set_host_ipi(42)
 489  *    |  42:   kvmppc_clear_host_ipi(42)
 490  *    |  42: smp_ipi_demux_relaxed()
 491  *    |  42: // returns to executing guest
 492  *    |      // RE-ORDERED STORE COMPLETES
 493  *    ->105:   message[CALL_FUNCTION] = 1
 494  *      105:   ppc_msgsnd_sync()/smp_mb()
 495  *      105:   ppc_msgsnd() -> 42
 496  *       42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored
 497  *      105: // hangs waiting on 42 to process messages/call_single_queue
 498  *
 499  * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is
 500  * to guard against sequences such as the following (as well as to create
 501  * a read-side pairing with the barrier in kvmppc_set_host_ipi()):
 502  *
 503  *      CPU
 504  *        X: smp_muxed_ipi_set_message():
 505  *        X:   smp_mb()
 506  *        X:   message[RESCHEDULE] = 1
 507  *        X: doorbell_global_ipi(42):
 508  *        X:   kvmppc_set_host_ipi(42)
 509  *        X:   ppc_msgsnd_sync()/smp_mb()
 510  *        X:   ppc_msgsnd() -> 42
 511  *       42: doorbell_exception(): // from CPU X
 512  *       42:   ppc_msgsync()
 513  *           // STORE DEFERRED DUE TO RE-ORDERING
 514  *    -- 42:   kvmppc_clear_host_ipi(42)
 515  *    |  42: smp_ipi_demux_relaxed()
 516  *    | 105: smp_muxed_ipi_set_message():
 517  *    | 105:   smb_mb()
 518  *    | 105:   message[CALL_FUNCTION] = 1
 519  *    | 105: doorbell_global_ipi(42):
 520  *    | 105:   kvmppc_set_host_ipi(42)
 521  *    |      // RE-ORDERED STORE COMPLETES
 522  *    -> 42:   kvmppc_clear_host_ipi(42)
 523  *       42: // returns to executing guest
 524  *      105:   ppc_msgsnd_sync()/smp_mb()
 525  *      105:   ppc_msgsnd() -> 42
 526  *       42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored
 527  *      105: // hangs waiting on 42 to process messages/call_single_queue
 528  */
 529 static inline void kvmppc_set_host_ipi(int cpu)
 530 {
 531         /*
 532          * order stores of IPI messages vs. setting of host_ipi flag
 533          *
 534          * pairs with the barrier in kvmppc_clear_host_ipi()
 535          */
 536         smp_mb();
 537         paca_ptrs[cpu]->kvm_hstate.host_ipi = 1;
 538 }
 539 
 540 static inline void kvmppc_clear_host_ipi(int cpu)
 541 {
 542         paca_ptrs[cpu]->kvm_hstate.host_ipi = 0;
 543         /*
 544          * order clearing of host_ipi flag vs. processing of IPI messages
 545          *
 546          * pairs with the barrier in kvmppc_set_host_ipi()
 547          */
 548         smp_mb();
 549 }
 550 
 551 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
 552 {
 553         vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
 554 }
 555 
 556 extern void kvm_hv_vm_activated(void);
 557 extern void kvm_hv_vm_deactivated(void);
 558 extern bool kvm_hv_mode_active(void);
 559 
 560 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu,
 561                                         struct kvm_nested_guest *nested);
 562 
 563 #else
 564 static inline void __init kvm_cma_reserve(void)
 565 {}
 566 
 567 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 568 {}
 569 
 570 static inline void kvmppc_set_xive_tima(int cpu,
 571                                         unsigned long phys_addr,
 572                                         void __iomem *virt_addr)
 573 {}
 574 
 575 static inline u32 kvmppc_get_xics_latch(void)
 576 {
 577         return 0;
 578 }
 579 
 580 static inline void kvmppc_set_host_ipi(int cpu)
 581 {}
 582 
 583 static inline void kvmppc_clear_host_ipi(int cpu)
 584 {}
 585 
 586 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
 587 {
 588         kvm_vcpu_kick(vcpu);
 589 }
 590 
 591 static inline bool kvm_hv_mode_active(void)             { return false; }
 592 
 593 #endif
 594 
 595 #ifdef CONFIG_KVM_XICS
 596 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
 597 {
 598         return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
 599 }
 600 
 601 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
 602                                 struct kvm *kvm)
 603 {
 604         if (kvm && kvm_irq_bypass)
 605                 return kvm->arch.pimap;
 606         return NULL;
 607 }
 608 
 609 extern void kvmppc_alloc_host_rm_ops(void);
 610 extern void kvmppc_free_host_rm_ops(void);
 611 extern void kvmppc_free_pimap(struct kvm *kvm);
 612 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
 613 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
 614 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
 615 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
 616 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
 617 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
 618                         struct kvm_vcpu *vcpu, u32 cpu);
 619 extern void kvmppc_xics_ipi_action(void);
 620 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
 621                                    unsigned long host_irq);
 622 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
 623                                    unsigned long host_irq);
 624 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
 625                                         struct kvmppc_irq_map *irq_map,
 626                                         struct kvmppc_passthru_irqmap *pimap,
 627                                         bool *again);
 628 
 629 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
 630                                int level, bool line_status);
 631 
 632 extern int h_ipi_redirect;
 633 #else
 634 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
 635                                 struct kvm *kvm)
 636         { return NULL; }
 637 static inline void kvmppc_alloc_host_rm_ops(void) {};
 638 static inline void kvmppc_free_host_rm_ops(void) {};
 639 static inline void kvmppc_free_pimap(struct kvm *kvm) {};
 640 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
 641         { return 0; }
 642 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
 643         { return 0; }
 644 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
 645 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
 646         { return 0; }
 647 #endif
 648 
 649 #ifdef CONFIG_KVM_XIVE
 650 /*
 651  * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
 652  * ie. P9 new interrupt controller, while the second "xive" is the legacy
 653  * "eXternal Interrupt Vector Entry" which is the configuration of an
 654  * interrupt on the "xics" interrupt controller on P8 and earlier. Those
 655  * two function consume or produce a legacy "XIVE" state from the
 656  * new "XIVE" interrupt controller.
 657  */
 658 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
 659                                 u32 priority);
 660 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
 661                                 u32 *priority);
 662 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
 663 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
 664 extern void kvmppc_xive_init_module(void);
 665 extern void kvmppc_xive_exit_module(void);
 666 
 667 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
 668                                     struct kvm_vcpu *vcpu, u32 cpu);
 669 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
 670 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
 671                                   struct irq_desc *host_desc);
 672 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
 673                                   struct irq_desc *host_desc);
 674 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
 675 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
 676 
 677 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
 678                                int level, bool line_status);
 679 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu);
 680 
 681 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
 682 {
 683         return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE;
 684 }
 685 
 686 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
 687                                            struct kvm_vcpu *vcpu, u32 cpu);
 688 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu);
 689 extern void kvmppc_xive_native_init_module(void);
 690 extern void kvmppc_xive_native_exit_module(void);
 691 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
 692                                      union kvmppc_one_reg *val);
 693 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
 694                                      union kvmppc_one_reg *val);
 695 extern bool kvmppc_xive_native_supported(void);
 696 
 697 #else
 698 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
 699                                        u32 priority) { return -1; }
 700 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
 701                                        u32 *priority) { return -1; }
 702 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
 703 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
 704 static inline void kvmppc_xive_init_module(void) { }
 705 static inline void kvmppc_xive_exit_module(void) { }
 706 
 707 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
 708                                            struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
 709 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
 710 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
 711                                          struct irq_desc *host_desc) { return -ENODEV; }
 712 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
 713                                          struct irq_desc *host_desc) { return -ENODEV; }
 714 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
 715 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
 716 
 717 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
 718                                       int level, bool line_status) { return -ENODEV; }
 719 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { }
 720 
 721 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
 722         { return 0; }
 723 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
 724                           struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
 725 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
 726 static inline void kvmppc_xive_native_init_module(void) { }
 727 static inline void kvmppc_xive_native_exit_module(void) { }
 728 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
 729                                             union kvmppc_one_reg *val)
 730 { return 0; }
 731 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
 732                                             union kvmppc_one_reg *val)
 733 { return -ENOENT; }
 734 
 735 #endif /* CONFIG_KVM_XIVE */
 736 
 737 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER)
 738 static inline bool xics_on_xive(void)
 739 {
 740         return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE);
 741 }
 742 #else
 743 static inline bool xics_on_xive(void)
 744 {
 745         return false;
 746 }
 747 #endif
 748 
 749 /*
 750  * Prototypes for functions called only from assembler code.
 751  * Having prototypes reduces sparse errors.
 752  */
 753 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 754                          unsigned long ioba, unsigned long tce);
 755 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 756                                   unsigned long liobn, unsigned long ioba,
 757                                   unsigned long tce_list, unsigned long npages);
 758 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
 759                            unsigned long liobn, unsigned long ioba,
 760                            unsigned long tce_value, unsigned long npages);
 761 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
 762                             unsigned int yield_count);
 763 long kvmppc_h_random(struct kvm_vcpu *vcpu);
 764 void kvmhv_commence_exit(int trap);
 765 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
 766 void kvmppc_subcore_enter_guest(void);
 767 void kvmppc_subcore_exit_guest(void);
 768 long kvmppc_realmode_hmi_handler(void);
 769 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
 770                     long pte_index, unsigned long pteh, unsigned long ptel);
 771 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
 772                      unsigned long pte_index, unsigned long avpn);
 773 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
 774 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
 775                       unsigned long pte_index, unsigned long avpn,
 776                       unsigned long va);
 777 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
 778                    unsigned long pte_index);
 779 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
 780                         unsigned long pte_index);
 781 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
 782                         unsigned long pte_index);
 783 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags,
 784                            unsigned long dest, unsigned long src);
 785 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
 786                           unsigned long slb_v, unsigned int status, bool data);
 787 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
 788 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu);
 789 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server);
 790 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
 791                     unsigned long mfrr);
 792 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
 793 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
 794 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu);
 795 
 796 /*
 797  * Host-side operations we want to set up while running in real
 798  * mode in the guest operating on the xics.
 799  * Currently only VCPU wakeup is supported.
 800  */
 801 
 802 union kvmppc_rm_state {
 803         unsigned long raw;
 804         struct {
 805                 u32 in_host;
 806                 u32 rm_action;
 807         };
 808 };
 809 
 810 struct kvmppc_host_rm_core {
 811         union kvmppc_rm_state rm_state;
 812         void *rm_data;
 813         char pad[112];
 814 };
 815 
 816 struct kvmppc_host_rm_ops {
 817         struct kvmppc_host_rm_core      *rm_core;
 818         void            (*vcpu_kick)(struct kvm_vcpu *vcpu);
 819 };
 820 
 821 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
 822 
 823 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
 824 {
 825 #ifdef CONFIG_KVM_BOOKE_HV
 826         return mfspr(SPRN_GEPR);
 827 #elif defined(CONFIG_BOOKE)
 828         return vcpu->arch.epr;
 829 #else
 830         return 0;
 831 #endif
 832 }
 833 
 834 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
 835 {
 836 #ifdef CONFIG_KVM_BOOKE_HV
 837         mtspr(SPRN_GEPR, epr);
 838 #elif defined(CONFIG_BOOKE)
 839         vcpu->arch.epr = epr;
 840 #endif
 841 }
 842 
 843 #ifdef CONFIG_KVM_MPIC
 844 
 845 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
 846 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
 847                              u32 cpu);
 848 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
 849 
 850 #else
 851 
 852 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
 853 {
 854 }
 855 
 856 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
 857                 struct kvm_vcpu *vcpu, u32 cpu)
 858 {
 859         return -EINVAL;
 860 }
 861 
 862 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
 863                 struct kvm_vcpu *vcpu)
 864 {
 865 }
 866 
 867 #endif /* CONFIG_KVM_MPIC */
 868 
 869 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
 870                               struct kvm_config_tlb *cfg);
 871 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
 872                              struct kvm_dirty_tlb *cfg);
 873 
 874 long kvmppc_alloc_lpid(void);
 875 void kvmppc_claim_lpid(long lpid);
 876 void kvmppc_free_lpid(long lpid);
 877 void kvmppc_init_lpid(unsigned long nr_lpids);
 878 
 879 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
 880 {
 881         struct page *page;
 882         /*
 883          * We can only access pages that the kernel maps
 884          * as memory. Bail out for unmapped ones.
 885          */
 886         if (!pfn_valid(pfn))
 887                 return;
 888 
 889         /* Clear i-cache for new pages */
 890         page = pfn_to_page(pfn);
 891         if (!test_bit(PG_arch_1, &page->flags)) {
 892                 flush_dcache_icache_page(page);
 893                 set_bit(PG_arch_1, &page->flags);
 894         }
 895 }
 896 
 897 /*
 898  * Shared struct helpers. The shared struct can be little or big endian,
 899  * depending on the guest endianness. So expose helpers to all of them.
 900  */
 901 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
 902 {
 903 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
 904         /* Only Book3S_64 PR supports bi-endian for now */
 905         return vcpu->arch.shared_big_endian;
 906 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
 907         /* Book3s_64 HV on little endian is always little endian */
 908         return false;
 909 #else
 910         return true;
 911 #endif
 912 }
 913 
 914 #define SPRNG_WRAPPER_GET(reg, bookehv_spr)                             \
 915 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu)             \
 916 {                                                                       \
 917         return mfspr(bookehv_spr);                                      \
 918 }                                                                       \
 919 
 920 #define SPRNG_WRAPPER_SET(reg, bookehv_spr)                             \
 921 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val)   \
 922 {                                                                       \
 923         mtspr(bookehv_spr, val);                                                \
 924 }                                                                       \
 925 
 926 #define SHARED_WRAPPER_GET(reg, size)                                   \
 927 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu)           \
 928 {                                                                       \
 929         if (kvmppc_shared_big_endian(vcpu))                             \
 930                return be##size##_to_cpu(vcpu->arch.shared->reg);        \
 931         else                                                            \
 932                return le##size##_to_cpu(vcpu->arch.shared->reg);        \
 933 }                                                                       \
 934 
 935 #define SHARED_WRAPPER_SET(reg, size)                                   \
 936 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
 937 {                                                                       \
 938         if (kvmppc_shared_big_endian(vcpu))                             \
 939                vcpu->arch.shared->reg = cpu_to_be##size(val);           \
 940         else                                                            \
 941                vcpu->arch.shared->reg = cpu_to_le##size(val);           \
 942 }                                                                       \
 943 
 944 #define SHARED_WRAPPER(reg, size)                                       \
 945         SHARED_WRAPPER_GET(reg, size)                                   \
 946         SHARED_WRAPPER_SET(reg, size)                                   \
 947 
 948 #define SPRNG_WRAPPER(reg, bookehv_spr)                                 \
 949         SPRNG_WRAPPER_GET(reg, bookehv_spr)                             \
 950         SPRNG_WRAPPER_SET(reg, bookehv_spr)                             \
 951 
 952 #ifdef CONFIG_KVM_BOOKE_HV
 953 
 954 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)                    \
 955         SPRNG_WRAPPER(reg, bookehv_spr)                                 \
 956 
 957 #else
 958 
 959 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)                    \
 960         SHARED_WRAPPER(reg, size)                                       \
 961 
 962 #endif
 963 
 964 SHARED_WRAPPER(critical, 64)
 965 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
 966 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
 967 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
 968 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
 969 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
 970 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
 971 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
 972 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
 973 SHARED_WRAPPER_GET(msr, 64)
 974 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
 975 {
 976         if (kvmppc_shared_big_endian(vcpu))
 977                vcpu->arch.shared->msr = cpu_to_be64(val);
 978         else
 979                vcpu->arch.shared->msr = cpu_to_le64(val);
 980 }
 981 SHARED_WRAPPER(dsisr, 32)
 982 SHARED_WRAPPER(int_pending, 32)
 983 SHARED_WRAPPER(sprg4, 64)
 984 SHARED_WRAPPER(sprg5, 64)
 985 SHARED_WRAPPER(sprg6, 64)
 986 SHARED_WRAPPER(sprg7, 64)
 987 
 988 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
 989 {
 990         if (kvmppc_shared_big_endian(vcpu))
 991                return be32_to_cpu(vcpu->arch.shared->sr[nr]);
 992         else
 993                return le32_to_cpu(vcpu->arch.shared->sr[nr]);
 994 }
 995 
 996 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
 997 {
 998         if (kvmppc_shared_big_endian(vcpu))
 999                vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
1000         else
1001                vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
1002 }
1003 
1004 /*
1005  * Please call after prepare_to_enter. This function puts the lazy ee and irq
1006  * disabled tracking state back to normal mode, without actually enabling
1007  * interrupts.
1008  */
1009 static inline void kvmppc_fix_ee_before_entry(void)
1010 {
1011         trace_hardirqs_on();
1012 
1013 #ifdef CONFIG_PPC64
1014         /*
1015          * To avoid races, the caller must have gone directly from having
1016          * interrupts fully-enabled to hard-disabled.
1017          */
1018         WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
1019 
1020         /* Only need to enable IRQs by hard enabling them after this */
1021         local_paca->irq_happened = 0;
1022         irq_soft_mask_set(IRQS_ENABLED);
1023 #endif
1024 }
1025 
1026 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
1027 {
1028         ulong ea;
1029         ulong msr_64bit = 0;
1030 
1031         ea = kvmppc_get_gpr(vcpu, rb);
1032         if (ra)
1033                 ea += kvmppc_get_gpr(vcpu, ra);
1034 
1035 #if defined(CONFIG_PPC_BOOK3E_64)
1036         msr_64bit = MSR_CM;
1037 #elif defined(CONFIG_PPC_BOOK3S_64)
1038         msr_64bit = MSR_SF;
1039 #endif
1040 
1041         if (!(kvmppc_get_msr(vcpu) & msr_64bit))
1042                 ea = (uint32_t)ea;
1043 
1044         return ea;
1045 }
1046 
1047 extern void xics_wake_cpu(int cpu);
1048 
1049 #endif /* __POWERPC_KVM_PPC_H__ */
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root/arch/powerpc/include/asm/kvm_ppc.h

INCLUDED FROM

DEFINITIONS
