1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * 4 * Copyright SUSE Linux Products GmbH 2009 5 * 6 * Authors: Alexander Graf <agraf@suse.de> 7 */ 8 9 #ifndef __ASM_KVM_BOOK3S_H__ 10 #define __ASM_KVM_BOOK3S_H__ 11 12 #include <linux/types.h> 13 #include <linux/kvm_host.h> 14 #include <asm/kvm_book3s_asm.h> 15 #include <asm/guest-state-buffer.h> 16 17 struct kvmppc_bat { 18 u64 raw; 19 u32 bepi; 20 u32 bepi_mask; 21 u32 brpn; 22 u8 wimg; 23 u8 pp; 24 bool vs : 1; 25 bool vp : 1; 26 }; 27 28 struct kvmppc_sid_map { 29 u64 guest_vsid; 30 u64 guest_esid; 31 u64 host_vsid; 32 bool valid : 1; 33 }; 34 35 #define SID_MAP_BITS 9 36 #define SID_MAP_NUM (1 << SID_MAP_BITS) 37 #define SID_MAP_MASK (SID_MAP_NUM - 1) 38 39 #ifdef CONFIG_PPC_BOOK3S_64 40 #define SID_CONTEXTS 1 41 #else 42 #define SID_CONTEXTS 128 43 #define VSID_POOL_SIZE (SID_CONTEXTS * 16) 44 #endif 45 46 struct hpte_cache { 47 struct hlist_node list_pte; 48 struct hlist_node list_pte_long; 49 struct hlist_node list_vpte; 50 struct hlist_node list_vpte_long; 51 #ifdef CONFIG_PPC_BOOK3S_64 52 struct hlist_node list_vpte_64k; 53 #endif 54 struct rcu_head rcu_head; 55 u64 host_vpn; 56 u64 pfn; 57 ulong slot; 58 struct kvmppc_pte pte; 59 int pagesize; 60 }; 61 62 /* 63 * Struct for a virtual core. 64 * Note: entry_exit_map combines a bitmap of threads that have entered 65 * in the bottom 8 bits and a bitmap of threads that have exited in the 66 * next 8 bits. This is so that we can atomically set the entry bit 67 * iff the exit map is 0 without taking a lock. 68 */ 69 struct kvmppc_vcore { 70 int n_runnable; 71 int num_threads; 72 int entry_exit_map; 73 int napping_threads; 74 int first_vcpuid; 75 u16 pcpu; 76 u16 last_cpu; 77 u8 vcore_state; 78 u8 in_guest; 79 struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS]; 80 struct list_head preempt_list; 81 spinlock_t lock; 82 struct rcuwait wait; 83 spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */ 84 u64 stolen_tb; 85 u64 preempt_tb; 86 struct kvm_vcpu *runner; 87 struct kvm *kvm; 88 u64 tb_offset; /* guest timebase - host timebase */ 89 u64 tb_offset_applied; /* timebase offset currently in force */ 90 ulong lpcr; 91 u32 arch_compat; 92 ulong pcr; 93 ulong dpdes; /* doorbell state (POWER8) */ 94 ulong vtb; /* virtual timebase */ 95 ulong conferring_threads; 96 unsigned int halt_poll_ns; 97 atomic_t online_count; 98 }; 99 100 struct kvmppc_vcpu_book3s { 101 struct kvmppc_sid_map sid_map[SID_MAP_NUM]; 102 struct { 103 u64 esid; 104 u64 vsid; 105 } slb_shadow[64]; 106 u8 slb_shadow_max; 107 struct kvmppc_bat ibat[8]; 108 struct kvmppc_bat dbat[8]; 109 u64 hid[6]; 110 u64 gqr[8]; 111 u64 sdr1; 112 u64 hior; 113 u64 msr_mask; 114 u64 vtb; 115 #ifdef CONFIG_PPC_BOOK3S_32 116 u32 vsid_pool[VSID_POOL_SIZE]; 117 u32 vsid_next; 118 #else 119 u64 proto_vsid_first; 120 u64 proto_vsid_max; 121 u64 proto_vsid_next; 122 #endif 123 int context_id[SID_CONTEXTS]; 124 125 bool hior_explicit; /* HIOR is set by ioctl, not PVR */ 126 127 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE]; 128 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG]; 129 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE]; 130 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG]; 131 #ifdef CONFIG_PPC_BOOK3S_64 132 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K]; 133 #endif 134 int hpte_cache_count; 135 spinlock_t mmu_lock; 136 }; 137 138 #define VSID_REAL 0x07ffffffffc00000ULL 139 #define VSID_BAT 0x07ffffffffb00000ULL 140 #define VSID_64K 0x0800000000000000ULL 141 #define VSID_1T 0x1000000000000000ULL 142 #define VSID_REAL_DR 0x2000000000000000ULL 143 #define VSID_REAL_IR 0x4000000000000000ULL 144 #define VSID_PR 0x8000000000000000ULL 145 146 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask); 147 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask); 148 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end); 149 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr); 150 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu); 151 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu); 152 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu); 153 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte, 154 bool iswrite); 155 extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte); 156 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr); 157 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size); 158 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu); 159 extern int kvmppc_book3s_hv_page_fault(struct kvm_vcpu *vcpu, 160 unsigned long addr, unsigned long status); 161 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, 162 unsigned long slb_v, unsigned long valid); 163 extern int kvmppc_hv_emulate_mmio(struct kvm_vcpu *vcpu, 164 unsigned long gpa, gva_t ea, int is_store); 165 166 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 167 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu); 168 extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte); 169 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu); 170 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu); 171 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 172 extern int kvmppc_mmu_hpte_sysinit(void); 173 extern void kvmppc_mmu_hpte_sysexit(void); 174 extern int kvmppc_mmu_hv_init(void); 175 extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc); 176 177 extern int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu, 178 unsigned long ea, unsigned long dsisr); 179 extern unsigned long __kvmhv_copy_tofrom_guest_radix(int lpid, int pid, 180 gva_t eaddr, void *to, void *from, 181 unsigned long n); 182 extern long kvmhv_copy_from_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr, 183 void *to, unsigned long n); 184 extern long kvmhv_copy_to_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr, 185 void *from, unsigned long n); 186 extern int kvmppc_mmu_walk_radix_tree(struct kvm_vcpu *vcpu, gva_t eaddr, 187 struct kvmppc_pte *gpte, u64 root, 188 u64 *pte_ret_p); 189 extern int kvmppc_mmu_radix_translate_table(struct kvm_vcpu *vcpu, gva_t eaddr, 190 struct kvmppc_pte *gpte, u64 table, 191 int table_index, u64 *pte_ret_p); 192 extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, 193 struct kvmppc_pte *gpte, bool data, bool iswrite); 194 extern void kvmppc_radix_tlbie_page(struct kvm *kvm, unsigned long addr, 195 unsigned int pshift, u64 lpid); 196 extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa, 197 unsigned int shift, 198 const struct kvm_memory_slot *memslot, 199 u64 lpid); 200 extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested, 201 bool writing, unsigned long gpa, 202 u64 lpid); 203 extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu, 204 unsigned long gpa, 205 struct kvm_memory_slot *memslot, 206 bool writing, bool kvm_ro, 207 pte_t *inserted_pte, unsigned int *levelp); 208 extern int kvmppc_init_vm_radix(struct kvm *kvm); 209 extern void kvmppc_free_radix(struct kvm *kvm); 210 extern void kvmppc_free_pgtable_radix(struct kvm *kvm, pgd_t *pgd, 211 u64 lpid); 212 extern int kvmppc_radix_init(void); 213 extern void kvmppc_radix_exit(void); 214 extern void kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, 215 unsigned long gfn); 216 extern bool kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, 217 unsigned long gfn); 218 extern bool kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, 219 unsigned long gfn); 220 extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm, 221 struct kvm_memory_slot *memslot, unsigned long *map); 222 extern void kvmppc_radix_flush_memslot(struct kvm *kvm, 223 const struct kvm_memory_slot *memslot); 224 extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 225 226 /* XXX remove this export when load_last_inst() is generic */ 227 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 228 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec); 229 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, 230 unsigned int vec); 231 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags); 232 extern void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac); 233 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, 234 bool upper, u32 val); 235 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr); 236 extern int kvmppc_emulate_paired_single(struct kvm_vcpu *vcpu); 237 extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, 238 bool writing, bool *writable); 239 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev, 240 unsigned long *rmap, long pte_index, int realmode); 241 extern void kvmppc_update_dirty_map(const struct kvm_memory_slot *memslot, 242 unsigned long gfn, unsigned long psize); 243 extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep, 244 unsigned long pte_index); 245 void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep, 246 unsigned long pte_index); 247 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr, 248 unsigned long *nb_ret); 249 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr, 250 unsigned long gpa, bool dirty); 251 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, 252 long pte_index, unsigned long pteh, unsigned long ptel, 253 pgd_t *pgdir, bool realmode, unsigned long *idx_ret); 254 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, 255 unsigned long pte_index, unsigned long avpn, 256 unsigned long *hpret); 257 extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm, 258 struct kvm_memory_slot *memslot, unsigned long *map); 259 extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa, 260 struct kvm_memory_slot *memslot, 261 unsigned long *map); 262 extern unsigned long kvmppc_filter_lpcr_hv(struct kvm *kvm, 263 unsigned long lpcr); 264 extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr, 265 unsigned long mask); 266 extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr); 267 268 extern int kvmhv_p9_tm_emulation_early(struct kvm_vcpu *vcpu); 269 extern int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu); 270 extern void kvmhv_emulate_tm_rollback(struct kvm_vcpu *vcpu); 271 272 extern void kvmppc_entry_trampoline(void); 273 extern void kvmppc_hv_entry_trampoline(void); 274 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst); 275 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst); 276 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd); 277 extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm); 278 extern int kvmppc_hcall_impl_pr(unsigned long cmd); 279 extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd); 280 extern void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu); 281 extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu); 282 283 long kvmppc_read_intr(void); 284 void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr); 285 void kvmppc_inject_interrupt_hv(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags); 286 287 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM 288 void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu); 289 void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu); 290 void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu); 291 void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu); 292 #else 293 static inline void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu) {} 294 static inline void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu) {} 295 static inline void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu) {} 296 static inline void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu) {} 297 #endif 298 299 extern unsigned long nested_capabilities; 300 long kvmhv_nested_init(void); 301 void kvmhv_nested_exit(void); 302 void kvmhv_vm_nested_init(struct kvm *kvm); 303 long kvmhv_set_partition_table(struct kvm_vcpu *vcpu); 304 long kvmhv_copy_tofrom_guest_nested(struct kvm_vcpu *vcpu); 305 void kvmhv_flush_lpid(u64 lpid); 306 void kvmhv_set_ptbl_entry(u64 lpid, u64 dw0, u64 dw1); 307 void kvmhv_release_all_nested(struct kvm *kvm); 308 long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu); 309 long kvmhv_do_nested_tlbie(struct kvm_vcpu *vcpu); 310 long do_h_rpt_invalidate_pat(struct kvm_vcpu *vcpu, unsigned long lpid, 311 unsigned long type, unsigned long pg_sizes, 312 unsigned long start, unsigned long end); 313 int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu, 314 u64 time_limit, unsigned long lpcr); 315 void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr); 316 void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu, 317 struct hv_guest_state *hr); 318 long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu); 319 320 void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac); 321 322 323 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 324 325 extern struct static_key_false __kvmhv_is_nestedv2; 326 327 static inline bool kvmhv_is_nestedv2(void) 328 { 329 return static_branch_unlikely(&__kvmhv_is_nestedv2); 330 } 331 332 static inline bool kvmhv_is_nestedv1(void) 333 { 334 return !static_branch_likely(&__kvmhv_is_nestedv2); 335 } 336 337 #else 338 339 static inline bool kvmhv_is_nestedv2(void) 340 { 341 return false; 342 } 343 344 static inline bool kvmhv_is_nestedv1(void) 345 { 346 return false; 347 } 348 349 #endif 350 351 int __kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs); 352 int __kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs); 353 int __kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden); 354 int __kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden); 355 356 static inline int kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, 357 struct pt_regs *regs) 358 { 359 if (kvmhv_is_nestedv2()) 360 return __kvmhv_nestedv2_reload_ptregs(vcpu, regs); 361 return 0; 362 } 363 static inline int kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu, 364 struct pt_regs *regs) 365 { 366 if (kvmhv_is_nestedv2()) 367 return __kvmhv_nestedv2_mark_dirty_ptregs(vcpu, regs); 368 return 0; 369 } 370 371 static inline int kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden) 372 { 373 if (kvmhv_is_nestedv2()) 374 return __kvmhv_nestedv2_mark_dirty(vcpu, iden); 375 return 0; 376 } 377 378 static inline int kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden) 379 { 380 if (kvmhv_is_nestedv2()) 381 return __kvmhv_nestedv2_cached_reload(vcpu, iden); 382 return 0; 383 } 384 385 extern int kvm_irq_bypass; 386 387 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) 388 { 389 return vcpu->arch.book3s; 390 } 391 392 /* Also add subarch specific defines */ 393 394 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 395 #include <asm/kvm_book3s_32.h> 396 #endif 397 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 398 #include <asm/kvm_book3s_64.h> 399 #endif 400 401 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 402 { 403 vcpu->arch.regs.gpr[num] = val; 404 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_GPR(num)); 405 } 406 407 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 408 { 409 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_GPR(num)) < 0); 410 return vcpu->arch.regs.gpr[num]; 411 } 412 413 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 414 { 415 vcpu->arch.regs.ccr = val; 416 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CR); 417 } 418 419 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 420 { 421 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_CR) < 0); 422 return vcpu->arch.regs.ccr; 423 } 424 425 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val) 426 { 427 vcpu->arch.regs.xer = val; 428 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_XER); 429 } 430 431 static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu) 432 { 433 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_XER) < 0); 434 return vcpu->arch.regs.xer; 435 } 436 437 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 438 { 439 vcpu->arch.regs.ctr = val; 440 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CTR); 441 } 442 443 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 444 { 445 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_CTR) < 0); 446 return vcpu->arch.regs.ctr; 447 } 448 449 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 450 { 451 vcpu->arch.regs.link = val; 452 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_LR); 453 } 454 455 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 456 { 457 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_LR) < 0); 458 return vcpu->arch.regs.link; 459 } 460 461 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 462 { 463 vcpu->arch.regs.nip = val; 464 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_NIA); 465 } 466 467 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 468 { 469 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_NIA) < 0); 470 return vcpu->arch.regs.nip; 471 } 472 473 static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu); 474 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu) 475 { 476 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE); 477 } 478 479 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 480 { 481 return vcpu->arch.fault_dar; 482 } 483 484 static inline u64 kvmppc_get_fpr(struct kvm_vcpu *vcpu, int i) 485 { 486 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(i)) < 0); 487 return vcpu->arch.fp.fpr[i][TS_FPROFFSET]; 488 } 489 490 static inline void kvmppc_set_fpr(struct kvm_vcpu *vcpu, int i, u64 val) 491 { 492 vcpu->arch.fp.fpr[i][TS_FPROFFSET] = val; 493 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(i)); 494 } 495 496 static inline u64 kvmppc_get_fpscr(struct kvm_vcpu *vcpu) 497 { 498 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_FPSCR) < 0); 499 return vcpu->arch.fp.fpscr; 500 } 501 502 static inline void kvmppc_set_fpscr(struct kvm_vcpu *vcpu, u64 val) 503 { 504 vcpu->arch.fp.fpscr = val; 505 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_FPSCR); 506 } 507 508 509 static inline u64 kvmppc_get_vsx_fpr(struct kvm_vcpu *vcpu, int i, int j) 510 { 511 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(i)) < 0); 512 return vcpu->arch.fp.fpr[i][j]; 513 } 514 515 static inline void kvmppc_set_vsx_fpr(struct kvm_vcpu *vcpu, int i, int j, 516 u64 val) 517 { 518 vcpu->arch.fp.fpr[i][j] = val; 519 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(i)); 520 } 521 522 #ifdef CONFIG_ALTIVEC 523 static inline void kvmppc_get_vsx_vr(struct kvm_vcpu *vcpu, int i, vector128 *v) 524 { 525 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(32 + i)) < 0); 526 *v = vcpu->arch.vr.vr[i]; 527 } 528 529 static inline void kvmppc_set_vsx_vr(struct kvm_vcpu *vcpu, int i, 530 vector128 *val) 531 { 532 vcpu->arch.vr.vr[i] = *val; 533 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(32 + i)); 534 } 535 536 static inline u32 kvmppc_get_vscr(struct kvm_vcpu *vcpu) 537 { 538 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSCR) < 0); 539 return vcpu->arch.vr.vscr.u[3]; 540 } 541 542 static inline void kvmppc_set_vscr(struct kvm_vcpu *vcpu, u32 val) 543 { 544 vcpu->arch.vr.vscr.u[3] = val; 545 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSCR); 546 } 547 #endif 548 549 #define KVMPPC_BOOK3S_VCPU_ACCESSOR_SET(reg, size, iden) \ 550 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 551 { \ 552 \ 553 vcpu->arch.reg = val; \ 554 kvmhv_nestedv2_mark_dirty(vcpu, iden); \ 555 } 556 557 #define KVMPPC_BOOK3S_VCPU_ACCESSOR_GET(reg, size, iden) \ 558 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 559 { \ 560 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \ 561 return vcpu->arch.reg; \ 562 } 563 564 #define KVMPPC_BOOK3S_VCPU_ACCESSOR(reg, size, iden) \ 565 KVMPPC_BOOK3S_VCPU_ACCESSOR_SET(reg, size, iden) \ 566 KVMPPC_BOOK3S_VCPU_ACCESSOR_GET(reg, size, iden) \ 567 568 KVMPPC_BOOK3S_VCPU_ACCESSOR(pid, 32, KVMPPC_GSID_PIDR) 569 KVMPPC_BOOK3S_VCPU_ACCESSOR(tar, 64, KVMPPC_GSID_TAR) 570 KVMPPC_BOOK3S_VCPU_ACCESSOR(ebbhr, 64, KVMPPC_GSID_EBBHR) 571 KVMPPC_BOOK3S_VCPU_ACCESSOR(ebbrr, 64, KVMPPC_GSID_EBBRR) 572 KVMPPC_BOOK3S_VCPU_ACCESSOR(bescr, 64, KVMPPC_GSID_BESCR) 573 KVMPPC_BOOK3S_VCPU_ACCESSOR(ic, 64, KVMPPC_GSID_IC) 574 KVMPPC_BOOK3S_VCPU_ACCESSOR(vrsave, 64, KVMPPC_GSID_VRSAVE) 575 576 577 #define KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(reg, size, iden) \ 578 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 579 { \ 580 vcpu->arch.vcore->reg = val; \ 581 kvmhv_nestedv2_mark_dirty(vcpu, iden); \ 582 } 583 584 #define KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(reg, size, iden) \ 585 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 586 { \ 587 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \ 588 return vcpu->arch.vcore->reg; \ 589 } 590 591 #define KVMPPC_BOOK3S_VCORE_ACCESSOR(reg, size, iden) \ 592 KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(reg, size, iden) \ 593 KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(reg, size, iden) \ 594 595 596 KVMPPC_BOOK3S_VCORE_ACCESSOR(vtb, 64, KVMPPC_GSID_VTB) 597 KVMPPC_BOOK3S_VCORE_ACCESSOR(dpdes, 64, KVMPPC_GSID_DPDES) 598 KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(arch_compat, 32, KVMPPC_GSID_LOGICAL_PVR) 599 KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(lpcr, 64, KVMPPC_GSID_LPCR) 600 KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(tb_offset, 64, KVMPPC_GSID_TB_OFFSET) 601 602 static inline u64 kvmppc_get_tb_offset(struct kvm_vcpu *vcpu) 603 { 604 return vcpu->arch.vcore->tb_offset; 605 } 606 607 static inline u64 kvmppc_get_dec_expires(struct kvm_vcpu *vcpu) 608 { 609 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_DEC_EXPIRY_TB) < 0); 610 return vcpu->arch.dec_expires; 611 } 612 613 static inline void kvmppc_set_dec_expires(struct kvm_vcpu *vcpu, u64 val) 614 { 615 vcpu->arch.dec_expires = val; 616 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_DEC_EXPIRY_TB); 617 } 618 619 /* Expiry time of vcpu DEC relative to host TB */ 620 static inline u64 kvmppc_dec_expires_host_tb(struct kvm_vcpu *vcpu) 621 { 622 return kvmppc_get_dec_expires(vcpu) - kvmppc_get_tb_offset(vcpu); 623 } 624 625 static inline bool is_kvmppc_resume_guest(int r) 626 { 627 return (r == RESUME_GUEST || r == RESUME_GUEST_NV); 628 } 629 630 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm); 631 static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu) 632 { 633 /* Only PR KVM supports the magic page */ 634 return !is_kvmppc_hv_enabled(vcpu->kvm); 635 } 636 637 extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu); 638 extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu); 639 640 /* Magic register values loaded into r3 and r4 before the 'sc' assembly 641 * instruction for the OSI hypercalls */ 642 #define OSI_SC_MAGIC_R3 0x113724FA 643 #define OSI_SC_MAGIC_R4 0x77810F9B 644 645 #define INS_DCBZ 0x7c0007ec 646 /* TO = 31 for unconditional trap */ 647 #define INS_TW 0x7fe00008 648 649 #define SPLIT_HACK_MASK 0xff000000 650 #define SPLIT_HACK_OFFS 0xfb000000 651 652 /* 653 * This packs a VCPU ID from the [0..KVM_MAX_VCPU_IDS) space down to the 654 * [0..KVM_MAX_VCPUS) space, using knowledge of the guest's core stride 655 * (but not its actual threading mode, which is not available) to avoid 656 * collisions. 657 * 658 * The implementation leaves VCPU IDs from the range [0..KVM_MAX_VCPUS) (block 659 * 0) unchanged: if the guest is filling each VCORE completely then it will be 660 * using consecutive IDs and it will fill the space without any packing. 661 * 662 * For higher VCPU IDs, the packed ID is based on the VCPU ID modulo 663 * KVM_MAX_VCPUS (effectively masking off the top bits) and then an offset is 664 * added to avoid collisions. 665 * 666 * VCPU IDs in the range [KVM_MAX_VCPUS..(KVM_MAX_VCPUS*2)) (block 1) are only 667 * possible if the guest is leaving at least 1/2 of each VCORE empty, so IDs 668 * can be safely packed into the second half of each VCORE by adding an offset 669 * of (stride / 2). 670 * 671 * Similarly, if VCPU IDs in the range [(KVM_MAX_VCPUS*2)..(KVM_MAX_VCPUS*4)) 672 * (blocks 2 and 3) are seen, the guest must be leaving at least 3/4 of each 673 * VCORE empty so packed IDs can be offset by (stride / 4) and (stride * 3 / 4). 674 * 675 * Finally, VCPU IDs from blocks 5..7 will only be seen if the guest is using a 676 * stride of 8 and 1 thread per core so the remaining offsets of 1, 5, 3 and 7 677 * must be free to use. 678 * 679 * (The offsets for each block are stored in block_offsets[], indexed by the 680 * block number if the stride is 8. For cases where the guest's stride is less 681 * than 8, we can re-use the block_offsets array by multiplying the block 682 * number by (MAX_SMT_THREADS / stride) to reach the correct entry.) 683 */ 684 static inline u32 kvmppc_pack_vcpu_id(struct kvm *kvm, u32 id) 685 { 686 const int block_offsets[MAX_SMT_THREADS] = {0, 4, 2, 6, 1, 5, 3, 7}; 687 int stride = kvm->arch.emul_smt_mode; 688 int block = (id / KVM_MAX_VCPUS) * (MAX_SMT_THREADS / stride); 689 u32 packed_id; 690 691 if (WARN_ONCE(block >= MAX_SMT_THREADS, "VCPU ID too large to pack")) 692 return 0; 693 packed_id = (id % KVM_MAX_VCPUS) + block_offsets[block]; 694 if (WARN_ONCE(packed_id >= KVM_MAX_VCPUS, "VCPU ID packing failed")) 695 return 0; 696 return packed_id; 697 } 698 699 #endif /* __ASM_KVM_BOOK3S_H__ */ 700