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 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 456 { 457 paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi; 458 } 459 460 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 461 { 462 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 463 } 464 465 extern void kvm_hv_vm_activated(void); 466 extern void kvm_hv_vm_deactivated(void); 467 extern bool kvm_hv_mode_active(void); 468 469 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu, 470 struct kvm_nested_guest *nested); 471 472 #else 473 static inline void __init kvm_cma_reserve(void) 474 {} 475 476 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 477 {} 478 479 static inline void kvmppc_set_xive_tima(int cpu, 480 unsigned long phys_addr, 481 void __iomem *virt_addr) 482 {} 483 484 static inline u32 kvmppc_get_xics_latch(void) 485 { 486 return 0; 487 } 488 489 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 490 {} 491 492 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 493 { 494 kvm_vcpu_kick(vcpu); 495 } 496 497 static inline bool kvm_hv_mode_active(void) { return false; } 498 499 #endif 500 501 #ifdef CONFIG_KVM_XICS 502 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 503 { 504 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 505 } 506 507 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 508 struct kvm *kvm) 509 { 510 if (kvm && kvm_irq_bypass) 511 return kvm->arch.pimap; 512 return NULL; 513 } 514 515 extern void kvmppc_alloc_host_rm_ops(void); 516 extern void kvmppc_free_host_rm_ops(void); 517 extern void kvmppc_free_pimap(struct kvm *kvm); 518 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 519 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 520 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 521 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 522 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 523 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 524 struct kvm_vcpu *vcpu, u32 cpu); 525 extern void kvmppc_xics_ipi_action(void); 526 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 527 unsigned long host_irq); 528 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 529 unsigned long host_irq); 530 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 531 struct kvmppc_irq_map *irq_map, 532 struct kvmppc_passthru_irqmap *pimap, 533 bool *again); 534 535 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 536 int level, bool line_status); 537 538 extern int h_ipi_redirect; 539 #else 540 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 541 struct kvm *kvm) 542 { return NULL; } 543 static inline void kvmppc_alloc_host_rm_ops(void) {}; 544 static inline void kvmppc_free_host_rm_ops(void) {}; 545 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 546 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 547 { return 0; } 548 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 549 { return 0; } 550 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 551 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 552 { return 0; } 553 #endif 554 555 #ifdef CONFIG_KVM_XIVE 556 /* 557 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 558 * ie. P9 new interrupt controller, while the second "xive" is the legacy 559 * "eXternal Interrupt Vector Entry" which is the configuration of an 560 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 561 * two function consume or produce a legacy "XIVE" state from the 562 * new "XIVE" interrupt controller. 563 */ 564 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 565 u32 priority); 566 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 567 u32 *priority); 568 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 569 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 570 extern void kvmppc_xive_init_module(void); 571 extern void kvmppc_xive_exit_module(void); 572 573 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 574 struct kvm_vcpu *vcpu, u32 cpu); 575 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 576 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 577 struct irq_desc *host_desc); 578 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 579 struct irq_desc *host_desc); 580 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 581 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 582 583 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 584 int level, bool line_status); 585 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 586 587 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 588 { 589 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE; 590 } 591 592 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 593 struct kvm_vcpu *vcpu, u32 cpu); 594 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu); 595 extern void kvmppc_xive_native_init_module(void); 596 extern void kvmppc_xive_native_exit_module(void); 597 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 598 union kvmppc_one_reg *val); 599 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 600 union kvmppc_one_reg *val); 601 extern bool kvmppc_xive_native_supported(void); 602 603 #else 604 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 605 u32 priority) { return -1; } 606 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 607 u32 *priority) { return -1; } 608 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 609 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 610 static inline void kvmppc_xive_init_module(void) { } 611 static inline void kvmppc_xive_exit_module(void) { } 612 613 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 614 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 615 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 616 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 617 struct irq_desc *host_desc) { return -ENODEV; } 618 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 619 struct irq_desc *host_desc) { return -ENODEV; } 620 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 621 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 622 623 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 624 int level, bool line_status) { return -ENODEV; } 625 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } 626 627 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 628 { return 0; } 629 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 630 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 631 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 632 static inline void kvmppc_xive_native_init_module(void) { } 633 static inline void kvmppc_xive_native_exit_module(void) { } 634 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 635 union kvmppc_one_reg *val) 636 { return 0; } 637 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 638 union kvmppc_one_reg *val) 639 { return -ENOENT; } 640 641 #endif /* CONFIG_KVM_XIVE */ 642 643 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER) 644 static inline bool xics_on_xive(void) 645 { 646 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE); 647 } 648 #else 649 static inline bool xics_on_xive(void) 650 { 651 return false; 652 } 653 #endif 654 655 /* 656 * Prototypes for functions called only from assembler code. 657 * Having prototypes reduces sparse errors. 658 */ 659 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 660 unsigned long ioba, unsigned long tce); 661 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 662 unsigned long liobn, unsigned long ioba, 663 unsigned long tce_list, unsigned long npages); 664 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 665 unsigned long liobn, unsigned long ioba, 666 unsigned long tce_value, unsigned long npages); 667 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 668 unsigned int yield_count); 669 long kvmppc_h_random(struct kvm_vcpu *vcpu); 670 void kvmhv_commence_exit(int trap); 671 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 672 void kvmppc_subcore_enter_guest(void); 673 void kvmppc_subcore_exit_guest(void); 674 long kvmppc_realmode_hmi_handler(void); 675 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 676 long pte_index, unsigned long pteh, unsigned long ptel); 677 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 678 unsigned long pte_index, unsigned long avpn); 679 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 680 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 681 unsigned long pte_index, unsigned long avpn, 682 unsigned long va); 683 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 684 unsigned long pte_index); 685 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 686 unsigned long pte_index); 687 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 688 unsigned long pte_index); 689 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags, 690 unsigned long dest, unsigned long src); 691 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 692 unsigned long slb_v, unsigned int status, bool data); 693 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 694 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 695 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 696 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 697 unsigned long mfrr); 698 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 699 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 700 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 701 702 /* 703 * Host-side operations we want to set up while running in real 704 * mode in the guest operating on the xics. 705 * Currently only VCPU wakeup is supported. 706 */ 707 708 union kvmppc_rm_state { 709 unsigned long raw; 710 struct { 711 u32 in_host; 712 u32 rm_action; 713 }; 714 }; 715 716 struct kvmppc_host_rm_core { 717 union kvmppc_rm_state rm_state; 718 void *rm_data; 719 char pad[112]; 720 }; 721 722 struct kvmppc_host_rm_ops { 723 struct kvmppc_host_rm_core *rm_core; 724 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 725 }; 726 727 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 728 729 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 730 { 731 #ifdef CONFIG_KVM_BOOKE_HV 732 return mfspr(SPRN_GEPR); 733 #elif defined(CONFIG_BOOKE) 734 return vcpu->arch.epr; 735 #else 736 return 0; 737 #endif 738 } 739 740 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 741 { 742 #ifdef CONFIG_KVM_BOOKE_HV 743 mtspr(SPRN_GEPR, epr); 744 #elif defined(CONFIG_BOOKE) 745 vcpu->arch.epr = epr; 746 #endif 747 } 748 749 #ifdef CONFIG_KVM_MPIC 750 751 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 752 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 753 u32 cpu); 754 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 755 756 #else 757 758 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 759 { 760 } 761 762 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 763 struct kvm_vcpu *vcpu, u32 cpu) 764 { 765 return -EINVAL; 766 } 767 768 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 769 struct kvm_vcpu *vcpu) 770 { 771 } 772 773 #endif /* CONFIG_KVM_MPIC */ 774 775 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 776 struct kvm_config_tlb *cfg); 777 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 778 struct kvm_dirty_tlb *cfg); 779 780 long kvmppc_alloc_lpid(void); 781 void kvmppc_claim_lpid(long lpid); 782 void kvmppc_free_lpid(long lpid); 783 void kvmppc_init_lpid(unsigned long nr_lpids); 784 785 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 786 { 787 struct page *page; 788 /* 789 * We can only access pages that the kernel maps 790 * as memory. Bail out for unmapped ones. 791 */ 792 if (!pfn_valid(pfn)) 793 return; 794 795 /* Clear i-cache for new pages */ 796 page = pfn_to_page(pfn); 797 if (!test_bit(PG_arch_1, &page->flags)) { 798 flush_dcache_icache_page(page); 799 set_bit(PG_arch_1, &page->flags); 800 } 801 } 802 803 /* 804 * Shared struct helpers. The shared struct can be little or big endian, 805 * depending on the guest endianness. So expose helpers to all of them. 806 */ 807 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 808 { 809 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 810 /* Only Book3S_64 PR supports bi-endian for now */ 811 return vcpu->arch.shared_big_endian; 812 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 813 /* Book3s_64 HV on little endian is always little endian */ 814 return false; 815 #else 816 return true; 817 #endif 818 } 819 820 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 821 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 822 { \ 823 return mfspr(bookehv_spr); \ 824 } \ 825 826 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 827 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 828 { \ 829 mtspr(bookehv_spr, val); \ 830 } \ 831 832 #define SHARED_WRAPPER_GET(reg, size) \ 833 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 834 { \ 835 if (kvmppc_shared_big_endian(vcpu)) \ 836 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 837 else \ 838 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 839 } \ 840 841 #define SHARED_WRAPPER_SET(reg, size) \ 842 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 843 { \ 844 if (kvmppc_shared_big_endian(vcpu)) \ 845 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 846 else \ 847 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 848 } \ 849 850 #define SHARED_WRAPPER(reg, size) \ 851 SHARED_WRAPPER_GET(reg, size) \ 852 SHARED_WRAPPER_SET(reg, size) \ 853 854 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 855 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 856 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 857 858 #ifdef CONFIG_KVM_BOOKE_HV 859 860 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 861 SPRNG_WRAPPER(reg, bookehv_spr) \ 862 863 #else 864 865 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 866 SHARED_WRAPPER(reg, size) \ 867 868 #endif 869 870 SHARED_WRAPPER(critical, 64) 871 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 872 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 873 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 874 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 875 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 876 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 877 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 878 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 879 SHARED_WRAPPER_GET(msr, 64) 880 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 881 { 882 if (kvmppc_shared_big_endian(vcpu)) 883 vcpu->arch.shared->msr = cpu_to_be64(val); 884 else 885 vcpu->arch.shared->msr = cpu_to_le64(val); 886 } 887 SHARED_WRAPPER(dsisr, 32) 888 SHARED_WRAPPER(int_pending, 32) 889 SHARED_WRAPPER(sprg4, 64) 890 SHARED_WRAPPER(sprg5, 64) 891 SHARED_WRAPPER(sprg6, 64) 892 SHARED_WRAPPER(sprg7, 64) 893 894 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 895 { 896 if (kvmppc_shared_big_endian(vcpu)) 897 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 898 else 899 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 900 } 901 902 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 903 { 904 if (kvmppc_shared_big_endian(vcpu)) 905 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 906 else 907 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 908 } 909 910 /* 911 * Please call after prepare_to_enter. This function puts the lazy ee and irq 912 * disabled tracking state back to normal mode, without actually enabling 913 * interrupts. 914 */ 915 static inline void kvmppc_fix_ee_before_entry(void) 916 { 917 trace_hardirqs_on(); 918 919 #ifdef CONFIG_PPC64 920 /* 921 * To avoid races, the caller must have gone directly from having 922 * interrupts fully-enabled to hard-disabled. 923 */ 924 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 925 926 /* Only need to enable IRQs by hard enabling them after this */ 927 local_paca->irq_happened = 0; 928 irq_soft_mask_set(IRQS_ENABLED); 929 #endif 930 } 931 932 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 933 { 934 ulong ea; 935 ulong msr_64bit = 0; 936 937 ea = kvmppc_get_gpr(vcpu, rb); 938 if (ra) 939 ea += kvmppc_get_gpr(vcpu, ra); 940 941 #if defined(CONFIG_PPC_BOOK3E_64) 942 msr_64bit = MSR_CM; 943 #elif defined(CONFIG_PPC_BOOK3S_64) 944 msr_64bit = MSR_SF; 945 #endif 946 947 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 948 ea = (uint32_t)ea; 949 950 return ea; 951 } 952 953 extern void xics_wake_cpu(int cpu); 954 955 #endif /* __POWERPC_KVM_PPC_H__ */ 956