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_vcpu *vcpu); 62 extern int __kvmppc_vcpu_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_vcpu *vcpu, 67 unsigned int rt, unsigned int bytes, 68 int is_default_endian); 69 extern int kvmppc_handle_loads(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_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_vcpu *vcpu, 76 unsigned int rt, unsigned int bytes, int is_default_endian); 77 extern int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu, 78 unsigned int rs, unsigned int bytes, int is_default_endian); 79 extern int kvmppc_handle_store(struct kvm_vcpu *vcpu, 80 u64 val, unsigned int bytes, 81 int is_default_endian); 82 extern int kvmppc_handle_vsx_store(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_vcpu *vcpu); 94 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 95 extern int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu); 96 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 97 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 98 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); 99 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 100 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 101 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 102 103 /* Core-specific hooks */ 104 105 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 106 unsigned int gtlb_idx); 107 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 108 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 109 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 110 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 111 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 112 gva_t eaddr); 113 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 114 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 115 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 116 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 117 struct kvmppc_pte *pte); 118 119 extern int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu); 120 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 121 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 122 extern int kvmppc_core_check_processor_compat(void); 123 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 124 struct kvm_translation *tr); 125 126 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 127 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 128 129 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 130 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 131 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags); 132 extern void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu); 133 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 134 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu); 135 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu); 136 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu); 137 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 138 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 139 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 140 struct kvm_interrupt *irq); 141 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 142 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 143 ulong esr_flags); 144 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 145 ulong dear_flags, 146 ulong esr_flags); 147 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 148 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 149 ulong esr_flags); 150 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 151 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 152 153 extern int kvmppc_booke_init(void); 154 extern void kvmppc_booke_exit(void); 155 156 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 157 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 158 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 159 160 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); 161 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); 162 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); 163 extern void kvmppc_free_hpt(struct kvm_hpt_info *info); 164 extern void kvmppc_rmap_reset(struct kvm *kvm); 165 extern long kvmppc_prepare_vrma(struct kvm *kvm, 166 struct kvm_userspace_memory_region *mem); 167 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 168 struct kvm_memory_slot *memslot, unsigned long porder); 169 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 170 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd, 171 struct iommu_group *grp); 172 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm, 173 struct iommu_group *grp); 174 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm); 175 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm); 176 extern void kvmppc_setup_partition_table(struct kvm *kvm); 177 178 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 179 struct kvm_create_spapr_tce_64 *args); 180 extern struct kvmppc_spapr_tce_table *kvmppc_find_table( 181 struct kvm *kvm, unsigned long liobn); 182 #define kvmppc_ioba_validate(stt, ioba, npages) \ 183 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \ 184 (stt)->size, (ioba), (npages)) ? \ 185 H_PARAMETER : H_SUCCESS) 186 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 187 unsigned long ioba, unsigned long tce); 188 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 189 unsigned long liobn, unsigned long ioba, 190 unsigned long tce_list, unsigned long npages); 191 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 192 unsigned long liobn, unsigned long ioba, 193 unsigned long tce_value, unsigned long npages); 194 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 195 unsigned long ioba); 196 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 197 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 198 extern int kvmppc_core_init_vm(struct kvm *kvm); 199 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 200 extern void kvmppc_core_free_memslot(struct kvm *kvm, 201 struct kvm_memory_slot *slot); 202 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 203 struct kvm_memory_slot *memslot, 204 const struct kvm_userspace_memory_region *mem, 205 enum kvm_mr_change change); 206 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 207 const struct kvm_userspace_memory_region *mem, 208 const struct kvm_memory_slot *old, 209 const struct kvm_memory_slot *new, 210 enum kvm_mr_change change); 211 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 212 struct kvm_ppc_smmu_info *info); 213 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 214 struct kvm_memory_slot *memslot); 215 216 extern int kvmppc_bookehv_init(void); 217 extern void kvmppc_bookehv_exit(void); 218 219 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 220 221 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 222 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, 223 struct kvm_ppc_resize_hpt *rhpt); 224 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, 225 struct kvm_ppc_resize_hpt *rhpt); 226 227 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 228 229 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 230 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 231 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 232 233 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 234 u32 priority); 235 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 236 u32 *priority); 237 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 238 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 239 240 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 241 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 242 243 union kvmppc_one_reg { 244 u32 wval; 245 u64 dval; 246 vector128 vval; 247 u64 vsxval[2]; 248 u32 vsx32val[4]; 249 u16 vsx16val[8]; 250 u8 vsx8val[16]; 251 struct { 252 u64 addr; 253 u64 length; 254 } vpaval; 255 u64 xive_timaval[2]; 256 }; 257 258 struct kvmppc_ops { 259 struct module *owner; 260 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 261 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 262 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 263 union kvmppc_one_reg *val); 264 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 265 union kvmppc_one_reg *val); 266 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 267 void (*vcpu_put)(struct kvm_vcpu *vcpu); 268 void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags); 269 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 270 int (*vcpu_run)(struct kvm_vcpu *vcpu); 271 int (*vcpu_create)(struct kvm_vcpu *vcpu); 272 void (*vcpu_free)(struct kvm_vcpu *vcpu); 273 int (*check_requests)(struct kvm_vcpu *vcpu); 274 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 275 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 276 int (*prepare_memory_region)(struct kvm *kvm, 277 struct kvm_memory_slot *memslot, 278 const struct kvm_userspace_memory_region *mem, 279 enum kvm_mr_change change); 280 void (*commit_memory_region)(struct kvm *kvm, 281 const struct kvm_userspace_memory_region *mem, 282 const struct kvm_memory_slot *old, 283 const struct kvm_memory_slot *new, 284 enum kvm_mr_change change); 285 bool (*unmap_gfn_range)(struct kvm *kvm, struct kvm_gfn_range *range); 286 bool (*age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 287 bool (*test_age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 288 bool (*set_spte_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 289 void (*free_memslot)(struct kvm_memory_slot *slot); 290 int (*init_vm)(struct kvm *kvm); 291 void (*destroy_vm)(struct kvm *kvm); 292 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 293 int (*emulate_op)(struct kvm_vcpu *vcpu, 294 unsigned int inst, int *advance); 295 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 296 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 297 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 298 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 299 unsigned long arg); 300 int (*hcall_implemented)(unsigned long hcall); 301 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 302 struct irq_bypass_producer *); 303 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 304 struct irq_bypass_producer *); 305 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 306 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 307 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode, 308 unsigned long flags); 309 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr); 310 int (*enable_nested)(struct kvm *kvm); 311 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 312 int size); 313 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 314 int size); 315 int (*enable_svm)(struct kvm *kvm); 316 int (*svm_off)(struct kvm *kvm); 317 int (*enable_dawr1)(struct kvm *kvm); 318 bool (*hash_v3_possible)(void); 319 }; 320 321 extern struct kvmppc_ops *kvmppc_hv_ops; 322 extern struct kvmppc_ops *kvmppc_pr_ops; 323 324 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 325 enum instruction_fetch_type type, u32 *inst) 326 { 327 int ret = EMULATE_DONE; 328 u32 fetched_inst; 329 330 /* Load the instruction manually if it failed to do so in the 331 * exit path */ 332 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 333 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 334 335 /* Write fetch_failed unswapped if the fetch failed */ 336 if (ret == EMULATE_DONE) 337 fetched_inst = kvmppc_need_byteswap(vcpu) ? 338 swab32(vcpu->arch.last_inst) : 339 vcpu->arch.last_inst; 340 else 341 fetched_inst = vcpu->arch.last_inst; 342 343 *inst = fetched_inst; 344 return ret; 345 } 346 347 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 348 { 349 return kvm->arch.kvm_ops == kvmppc_hv_ops; 350 } 351 352 extern int kvmppc_hwrng_present(void); 353 354 /* 355 * Cuts out inst bits with ordering according to spec. 356 * That means the leftmost bit is zero. All given bits are included. 357 */ 358 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 359 { 360 u32 r; 361 u32 mask; 362 363 BUG_ON(msb > lsb); 364 365 mask = (1 << (lsb - msb + 1)) - 1; 366 r = (inst >> (63 - lsb)) & mask; 367 368 return r; 369 } 370 371 /* 372 * Replaces inst bits with ordering according to spec. 373 */ 374 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 375 { 376 u32 r; 377 u32 mask; 378 379 BUG_ON(msb > lsb); 380 381 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 382 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 383 384 return r; 385 } 386 387 #define one_reg_size(id) \ 388 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 389 390 #define get_reg_val(id, reg) ({ \ 391 union kvmppc_one_reg __u; \ 392 switch (one_reg_size(id)) { \ 393 case 4: __u.wval = (reg); break; \ 394 case 8: __u.dval = (reg); break; \ 395 default: BUG(); \ 396 } \ 397 __u; \ 398 }) 399 400 401 #define set_reg_val(id, val) ({ \ 402 u64 __v; \ 403 switch (one_reg_size(id)) { \ 404 case 4: __v = (val).wval; break; \ 405 case 8: __v = (val).dval; break; \ 406 default: BUG(); \ 407 } \ 408 __v; \ 409 }) 410 411 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 412 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 413 414 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 415 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 416 417 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 418 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 419 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 420 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 421 422 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 423 424 struct openpic; 425 426 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 427 extern void kvm_cma_reserve(void) __init; 428 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 429 { 430 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr; 431 } 432 433 static inline void kvmppc_set_xive_tima(int cpu, 434 unsigned long phys_addr, 435 void __iomem *virt_addr) 436 { 437 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 438 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr; 439 } 440 441 static inline u32 kvmppc_get_xics_latch(void) 442 { 443 u32 xirr; 444 445 xirr = get_paca()->kvm_hstate.saved_xirr; 446 get_paca()->kvm_hstate.saved_xirr = 0; 447 return xirr; 448 } 449 450 /* 451 * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to 452 * a CPU thread that's running/napping inside of a guest is by default regarded 453 * as a request to wake the CPU (if needed) and continue execution within the 454 * guest, potentially to process new state like externally-generated 455 * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI). 456 * 457 * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called 458 * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the 459 * target CPU's PACA. To avoid unnecessary exits to the host, this flag should 460 * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on 461 * the receiving side prior to processing the IPI work. 462 * 463 * NOTE: 464 * 465 * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi(). 466 * This is to guard against sequences such as the following: 467 * 468 * CPU 469 * X: smp_muxed_ipi_set_message(): 470 * X: smp_mb() 471 * X: message[RESCHEDULE] = 1 472 * X: doorbell_global_ipi(42): 473 * X: kvmppc_set_host_ipi(42) 474 * X: ppc_msgsnd_sync()/smp_mb() 475 * X: ppc_msgsnd() -> 42 476 * 42: doorbell_exception(): // from CPU X 477 * 42: ppc_msgsync() 478 * 105: smp_muxed_ipi_set_message(): 479 * 105: smb_mb() 480 * // STORE DEFERRED DUE TO RE-ORDERING 481 * --105: message[CALL_FUNCTION] = 1 482 * | 105: doorbell_global_ipi(42): 483 * | 105: kvmppc_set_host_ipi(42) 484 * | 42: kvmppc_clear_host_ipi(42) 485 * | 42: smp_ipi_demux_relaxed() 486 * | 42: // returns to executing guest 487 * | // RE-ORDERED STORE COMPLETES 488 * ->105: message[CALL_FUNCTION] = 1 489 * 105: ppc_msgsnd_sync()/smp_mb() 490 * 105: ppc_msgsnd() -> 42 491 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored 492 * 105: // hangs waiting on 42 to process messages/call_single_queue 493 * 494 * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is 495 * to guard against sequences such as the following (as well as to create 496 * a read-side pairing with the barrier in kvmppc_set_host_ipi()): 497 * 498 * CPU 499 * X: smp_muxed_ipi_set_message(): 500 * X: smp_mb() 501 * X: message[RESCHEDULE] = 1 502 * X: doorbell_global_ipi(42): 503 * X: kvmppc_set_host_ipi(42) 504 * X: ppc_msgsnd_sync()/smp_mb() 505 * X: ppc_msgsnd() -> 42 506 * 42: doorbell_exception(): // from CPU X 507 * 42: ppc_msgsync() 508 * // STORE DEFERRED DUE TO RE-ORDERING 509 * -- 42: kvmppc_clear_host_ipi(42) 510 * | 42: smp_ipi_demux_relaxed() 511 * | 105: smp_muxed_ipi_set_message(): 512 * | 105: smb_mb() 513 * | 105: message[CALL_FUNCTION] = 1 514 * | 105: doorbell_global_ipi(42): 515 * | 105: kvmppc_set_host_ipi(42) 516 * | // RE-ORDERED STORE COMPLETES 517 * -> 42: kvmppc_clear_host_ipi(42) 518 * 42: // returns to executing guest 519 * 105: ppc_msgsnd_sync()/smp_mb() 520 * 105: ppc_msgsnd() -> 42 521 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored 522 * 105: // hangs waiting on 42 to process messages/call_single_queue 523 */ 524 static inline void kvmppc_set_host_ipi(int cpu) 525 { 526 /* 527 * order stores of IPI messages vs. setting of host_ipi flag 528 * 529 * pairs with the barrier in kvmppc_clear_host_ipi() 530 */ 531 smp_mb(); 532 paca_ptrs[cpu]->kvm_hstate.host_ipi = 1; 533 } 534 535 static inline void kvmppc_clear_host_ipi(int cpu) 536 { 537 paca_ptrs[cpu]->kvm_hstate.host_ipi = 0; 538 /* 539 * order clearing of host_ipi flag vs. processing of IPI messages 540 * 541 * pairs with the barrier in kvmppc_set_host_ipi() 542 */ 543 smp_mb(); 544 } 545 546 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 547 { 548 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 549 } 550 551 extern void kvm_hv_vm_activated(void); 552 extern void kvm_hv_vm_deactivated(void); 553 extern bool kvm_hv_mode_active(void); 554 555 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu, 556 struct kvm_nested_guest *nested); 557 558 #else 559 static inline void __init kvm_cma_reserve(void) 560 {} 561 562 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 563 {} 564 565 static inline void kvmppc_set_xive_tima(int cpu, 566 unsigned long phys_addr, 567 void __iomem *virt_addr) 568 {} 569 570 static inline u32 kvmppc_get_xics_latch(void) 571 { 572 return 0; 573 } 574 575 static inline void kvmppc_set_host_ipi(int cpu) 576 {} 577 578 static inline void kvmppc_clear_host_ipi(int cpu) 579 {} 580 581 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 582 { 583 kvm_vcpu_kick(vcpu); 584 } 585 586 static inline bool kvm_hv_mode_active(void) { return false; } 587 588 #endif 589 590 #ifdef CONFIG_KVM_XICS 591 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 592 { 593 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 594 } 595 596 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 597 struct kvm *kvm) 598 { 599 if (kvm && kvm_irq_bypass) 600 return kvm->arch.pimap; 601 return NULL; 602 } 603 604 extern void kvmppc_alloc_host_rm_ops(void); 605 extern void kvmppc_free_host_rm_ops(void); 606 extern void kvmppc_free_pimap(struct kvm *kvm); 607 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 608 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 609 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 610 extern int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req); 611 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 612 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 613 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 614 struct kvm_vcpu *vcpu, u32 cpu); 615 extern void kvmppc_xics_ipi_action(void); 616 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 617 unsigned long host_irq); 618 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 619 unsigned long host_irq); 620 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 621 struct kvmppc_irq_map *irq_map, 622 struct kvmppc_passthru_irqmap *pimap, 623 bool *again); 624 625 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 626 int level, bool line_status); 627 628 extern int h_ipi_redirect; 629 #else 630 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 631 struct kvm *kvm) 632 { return NULL; } 633 static inline void kvmppc_alloc_host_rm_ops(void) {} 634 static inline void kvmppc_free_host_rm_ops(void) {} 635 static inline void kvmppc_free_pimap(struct kvm *kvm) {} 636 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 637 { return 0; } 638 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 639 { return 0; } 640 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 641 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 642 { return 0; } 643 static inline int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req) 644 { return 0; } 645 #endif 646 647 #ifdef CONFIG_KVM_XIVE 648 /* 649 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 650 * ie. P9 new interrupt controller, while the second "xive" is the legacy 651 * "eXternal Interrupt Vector Entry" which is the configuration of an 652 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 653 * two function consume or produce a legacy "XIVE" state from the 654 * new "XIVE" interrupt controller. 655 */ 656 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 657 u32 priority); 658 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 659 u32 *priority); 660 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 661 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 662 663 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 664 struct kvm_vcpu *vcpu, u32 cpu); 665 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 666 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 667 struct irq_desc *host_desc); 668 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 669 struct irq_desc *host_desc); 670 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 671 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 672 673 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 674 int level, bool line_status); 675 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 676 extern void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu); 677 extern void kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu); 678 679 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 680 { 681 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE; 682 } 683 684 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 685 struct kvm_vcpu *vcpu, u32 cpu); 686 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu); 687 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 688 union kvmppc_one_reg *val); 689 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 690 union kvmppc_one_reg *val); 691 extern bool kvmppc_xive_native_supported(void); 692 693 #else 694 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 695 u32 priority) { return -1; } 696 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 697 u32 *priority) { return -1; } 698 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 699 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 700 701 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 702 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 703 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 704 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 705 struct irq_desc *host_desc) { return -ENODEV; } 706 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 707 struct irq_desc *host_desc) { return -ENODEV; } 708 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 709 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 710 711 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 712 int level, bool line_status) { return -ENODEV; } 713 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } 714 static inline void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu) { } 715 static inline void kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu) { } 716 717 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 718 { return 0; } 719 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 720 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 721 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 722 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 723 union kvmppc_one_reg *val) 724 { return 0; } 725 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 726 union kvmppc_one_reg *val) 727 { return -ENOENT; } 728 729 #endif /* CONFIG_KVM_XIVE */ 730 731 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER) 732 static inline bool xics_on_xive(void) 733 { 734 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE); 735 } 736 #else 737 static inline bool xics_on_xive(void) 738 { 739 return false; 740 } 741 #endif 742 743 /* 744 * Prototypes for functions called only from assembler code. 745 * Having prototypes reduces sparse errors. 746 */ 747 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 748 unsigned long ioba, unsigned long tce); 749 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 750 unsigned long liobn, unsigned long ioba, 751 unsigned long tce_list, unsigned long npages); 752 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 753 unsigned long liobn, unsigned long ioba, 754 unsigned long tce_value, unsigned long npages); 755 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 756 unsigned int yield_count); 757 long kvmppc_rm_h_random(struct kvm_vcpu *vcpu); 758 void kvmhv_commence_exit(int trap); 759 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 760 void kvmppc_subcore_enter_guest(void); 761 void kvmppc_subcore_exit_guest(void); 762 long kvmppc_realmode_hmi_handler(void); 763 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 764 long pte_index, unsigned long pteh, unsigned long ptel); 765 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 766 unsigned long pte_index, unsigned long avpn); 767 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 768 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 769 unsigned long pte_index, unsigned long avpn); 770 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 771 unsigned long pte_index); 772 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 773 unsigned long pte_index); 774 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 775 unsigned long pte_index); 776 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags, 777 unsigned long dest, unsigned long src); 778 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 779 unsigned long slb_v, unsigned int status, bool data); 780 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 781 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 782 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 783 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 784 unsigned long mfrr); 785 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 786 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 787 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 788 789 /* 790 * Host-side operations we want to set up while running in real 791 * mode in the guest operating on the xics. 792 * Currently only VCPU wakeup is supported. 793 */ 794 795 union kvmppc_rm_state { 796 unsigned long raw; 797 struct { 798 u32 in_host; 799 u32 rm_action; 800 }; 801 }; 802 803 struct kvmppc_host_rm_core { 804 union kvmppc_rm_state rm_state; 805 void *rm_data; 806 char pad[112]; 807 }; 808 809 struct kvmppc_host_rm_ops { 810 struct kvmppc_host_rm_core *rm_core; 811 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 812 }; 813 814 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 815 816 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 817 { 818 #ifdef CONFIG_KVM_BOOKE_HV 819 return mfspr(SPRN_GEPR); 820 #elif defined(CONFIG_BOOKE) 821 return vcpu->arch.epr; 822 #else 823 return 0; 824 #endif 825 } 826 827 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 828 { 829 #ifdef CONFIG_KVM_BOOKE_HV 830 mtspr(SPRN_GEPR, epr); 831 #elif defined(CONFIG_BOOKE) 832 vcpu->arch.epr = epr; 833 #endif 834 } 835 836 #ifdef CONFIG_KVM_MPIC 837 838 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 839 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 840 u32 cpu); 841 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 842 843 #else 844 845 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 846 { 847 } 848 849 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 850 struct kvm_vcpu *vcpu, u32 cpu) 851 { 852 return -EINVAL; 853 } 854 855 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 856 struct kvm_vcpu *vcpu) 857 { 858 } 859 860 #endif /* CONFIG_KVM_MPIC */ 861 862 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 863 struct kvm_config_tlb *cfg); 864 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 865 struct kvm_dirty_tlb *cfg); 866 867 long kvmppc_alloc_lpid(void); 868 void kvmppc_claim_lpid(long lpid); 869 void kvmppc_free_lpid(long lpid); 870 void kvmppc_init_lpid(unsigned long nr_lpids); 871 872 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 873 { 874 struct page *page; 875 /* 876 * We can only access pages that the kernel maps 877 * as memory. Bail out for unmapped ones. 878 */ 879 if (!pfn_valid(pfn)) 880 return; 881 882 /* Clear i-cache for new pages */ 883 page = pfn_to_page(pfn); 884 if (!test_bit(PG_dcache_clean, &page->flags)) { 885 flush_dcache_icache_page(page); 886 set_bit(PG_dcache_clean, &page->flags); 887 } 888 } 889 890 /* 891 * Shared struct helpers. The shared struct can be little or big endian, 892 * depending on the guest endianness. So expose helpers to all of them. 893 */ 894 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 895 { 896 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 897 /* Only Book3S_64 PR supports bi-endian for now */ 898 return vcpu->arch.shared_big_endian; 899 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 900 /* Book3s_64 HV on little endian is always little endian */ 901 return false; 902 #else 903 return true; 904 #endif 905 } 906 907 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 908 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 909 { \ 910 return mfspr(bookehv_spr); \ 911 } \ 912 913 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 914 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 915 { \ 916 mtspr(bookehv_spr, val); \ 917 } \ 918 919 #define SHARED_WRAPPER_GET(reg, size) \ 920 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 921 { \ 922 if (kvmppc_shared_big_endian(vcpu)) \ 923 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 924 else \ 925 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 926 } \ 927 928 #define SHARED_WRAPPER_SET(reg, size) \ 929 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 930 { \ 931 if (kvmppc_shared_big_endian(vcpu)) \ 932 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 933 else \ 934 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 935 } \ 936 937 #define SHARED_WRAPPER(reg, size) \ 938 SHARED_WRAPPER_GET(reg, size) \ 939 SHARED_WRAPPER_SET(reg, size) \ 940 941 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 942 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 943 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 944 945 #ifdef CONFIG_KVM_BOOKE_HV 946 947 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 948 SPRNG_WRAPPER(reg, bookehv_spr) \ 949 950 #else 951 952 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 953 SHARED_WRAPPER(reg, size) \ 954 955 #endif 956 957 SHARED_WRAPPER(critical, 64) 958 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 959 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 960 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 961 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 962 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 963 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 964 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 965 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 966 SHARED_WRAPPER_GET(msr, 64) 967 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 968 { 969 if (kvmppc_shared_big_endian(vcpu)) 970 vcpu->arch.shared->msr = cpu_to_be64(val); 971 else 972 vcpu->arch.shared->msr = cpu_to_le64(val); 973 } 974 SHARED_WRAPPER(dsisr, 32) 975 SHARED_WRAPPER(int_pending, 32) 976 SHARED_WRAPPER(sprg4, 64) 977 SHARED_WRAPPER(sprg5, 64) 978 SHARED_WRAPPER(sprg6, 64) 979 SHARED_WRAPPER(sprg7, 64) 980 981 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 982 { 983 if (kvmppc_shared_big_endian(vcpu)) 984 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 985 else 986 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 987 } 988 989 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 990 { 991 if (kvmppc_shared_big_endian(vcpu)) 992 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 993 else 994 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 995 } 996 997 /* 998 * Please call after prepare_to_enter. This function puts the lazy ee and irq 999 * disabled tracking state back to normal mode, without actually enabling 1000 * interrupts. 1001 */ 1002 static inline void kvmppc_fix_ee_before_entry(void) 1003 { 1004 trace_hardirqs_on(); 1005 1006 #ifdef CONFIG_PPC64 1007 /* 1008 * To avoid races, the caller must have gone directly from having 1009 * interrupts fully-enabled to hard-disabled. 1010 */ 1011 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 1012 1013 /* Only need to enable IRQs by hard enabling them after this */ 1014 local_paca->irq_happened = 0; 1015 irq_soft_mask_set(IRQS_ENABLED); 1016 #endif 1017 } 1018 1019 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 1020 { 1021 ulong ea; 1022 ulong msr_64bit = 0; 1023 1024 ea = kvmppc_get_gpr(vcpu, rb); 1025 if (ra) 1026 ea += kvmppc_get_gpr(vcpu, ra); 1027 1028 #if defined(CONFIG_PPC_BOOK3E_64) 1029 msr_64bit = MSR_CM; 1030 #elif defined(CONFIG_PPC_BOOK3S_64) 1031 msr_64bit = MSR_SF; 1032 #endif 1033 1034 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 1035 ea = (uint32_t)ea; 1036 1037 return ea; 1038 } 1039 1040 extern void xics_wake_cpu(int cpu); 1041 1042 #endif /* __POWERPC_KVM_PPC_H__ */ 1043