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 #include <asm/inst.h> 32 33 /* 34 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction 35 * for supporting software breakpoint. 36 */ 37 #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00 38 39 enum emulation_result { 40 EMULATE_DONE, /* no further processing */ 41 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 42 EMULATE_FAIL, /* can't emulate this instruction */ 43 EMULATE_AGAIN, /* something went wrong. go again */ 44 EMULATE_EXIT_USER, /* emulation requires exit to user-space */ 45 }; 46 47 enum instruction_fetch_type { 48 INST_GENERIC, 49 INST_SC, /* system call */ 50 }; 51 52 enum xlate_instdata { 53 XLATE_INST, /* translate instruction address */ 54 XLATE_DATA /* translate data address */ 55 }; 56 57 enum xlate_readwrite { 58 XLATE_READ, /* check for read permissions */ 59 XLATE_WRITE /* check for write permissions */ 60 }; 61 62 extern int kvmppc_vcpu_run(struct kvm_vcpu *vcpu); 63 extern int __kvmppc_vcpu_run(struct kvm_vcpu *vcpu); 64 extern void kvmppc_handler_highmem(void); 65 66 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 67 extern int kvmppc_handle_load(struct kvm_vcpu *vcpu, 68 unsigned int rt, unsigned int bytes, 69 int is_default_endian); 70 extern int kvmppc_handle_loads(struct kvm_vcpu *vcpu, 71 unsigned int rt, unsigned int bytes, 72 int is_default_endian); 73 extern int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu, 74 unsigned int rt, unsigned int bytes, 75 int is_default_endian, int mmio_sign_extend); 76 extern int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu, 77 unsigned int rt, unsigned int bytes, int is_default_endian); 78 extern int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu, 79 unsigned int rs, unsigned int bytes, int is_default_endian); 80 extern int kvmppc_handle_store(struct kvm_vcpu *vcpu, 81 u64 val, unsigned int bytes, 82 int is_default_endian); 83 extern int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu, 84 int rs, unsigned int bytes, 85 int is_default_endian); 86 87 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, 88 enum instruction_fetch_type type, 89 unsigned long *inst); 90 91 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 92 bool data); 93 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 94 bool data); 95 extern int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu); 96 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 97 extern int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu); 98 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 99 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 100 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); 101 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 102 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 103 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 104 105 /* Core-specific hooks */ 106 107 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 108 unsigned int gtlb_idx); 109 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 110 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 111 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 112 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 113 gva_t eaddr); 114 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 115 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 116 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 117 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 118 struct kvmppc_pte *pte); 119 120 extern int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu); 121 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 122 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 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); 131 132 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, 133 ulong srr1_flags); 134 extern void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu); 135 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, 136 ulong srr1_flags); 137 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu, 138 ulong srr1_flags); 139 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu, 140 ulong srr1_flags); 141 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu, 142 ulong srr1_flags); 143 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 144 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 145 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 146 struct kvm_interrupt *irq); 147 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 148 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, 149 ulong dear_flags, 150 ulong esr_flags); 151 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 152 ulong srr1_flags, 153 ulong dar, 154 ulong dsisr); 155 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 156 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 157 ulong srr1_flags); 158 159 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 160 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 161 162 extern int kvmppc_booke_init(void); 163 extern void kvmppc_booke_exit(void); 164 165 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 166 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 167 168 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); 169 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); 170 extern int kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); 171 extern void kvmppc_free_hpt(struct kvm_hpt_info *info); 172 extern void kvmppc_rmap_reset(struct kvm *kvm); 173 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 174 struct kvm_memory_slot *memslot, unsigned long porder); 175 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 176 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd, 177 struct iommu_group *grp); 178 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm, 179 struct iommu_group *grp); 180 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm); 181 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm); 182 extern void kvmppc_setup_partition_table(struct kvm *kvm); 183 184 extern int kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 185 struct kvm_create_spapr_tce_64 *args); 186 #define kvmppc_ioba_validate(stt, ioba, npages) \ 187 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \ 188 (stt)->size, (ioba), (npages)) ? \ 189 H_PARAMETER : H_SUCCESS) 190 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 191 unsigned long ioba, unsigned long tce); 192 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 193 unsigned long liobn, unsigned long ioba, 194 unsigned long tce_list, unsigned long npages); 195 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 196 unsigned long liobn, unsigned long ioba, 197 unsigned long tce_value, unsigned long npages); 198 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 199 unsigned long ioba); 200 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 201 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 202 extern int kvmppc_core_init_vm(struct kvm *kvm); 203 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 204 extern void kvmppc_core_free_memslot(struct kvm *kvm, 205 struct kvm_memory_slot *slot); 206 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 207 const struct kvm_memory_slot *old, 208 struct kvm_memory_slot *new, 209 enum kvm_mr_change change); 210 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 211 struct kvm_memory_slot *old, 212 const struct kvm_memory_slot *new, 213 enum kvm_mr_change change); 214 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 215 struct kvm_ppc_smmu_info *info); 216 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 217 struct kvm_memory_slot *memslot); 218 219 extern int kvmppc_bookehv_init(void); 220 extern void kvmppc_bookehv_exit(void); 221 222 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 223 224 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 225 extern int kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, 226 struct kvm_ppc_resize_hpt *rhpt); 227 extern int kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, 228 struct kvm_ppc_resize_hpt *rhpt); 229 230 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 231 232 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 233 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 234 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 235 236 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 237 u32 priority); 238 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 239 u32 *priority); 240 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 241 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 242 243 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 244 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 245 246 union kvmppc_one_reg { 247 u32 wval; 248 u64 dval; 249 vector128 vval; 250 u64 vsxval[2]; 251 u32 vsx32val[4]; 252 u16 vsx16val[8]; 253 u8 vsx8val[16]; 254 struct { 255 u64 addr; 256 u64 length; 257 } vpaval; 258 u64 xive_timaval[2]; 259 }; 260 261 struct kvmppc_ops { 262 struct module *owner; 263 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 264 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 265 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 266 union kvmppc_one_reg *val); 267 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 268 union kvmppc_one_reg *val); 269 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 270 void (*vcpu_put)(struct kvm_vcpu *vcpu); 271 void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags); 272 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 273 int (*vcpu_run)(struct kvm_vcpu *vcpu); 274 int (*vcpu_create)(struct kvm_vcpu *vcpu); 275 void (*vcpu_free)(struct kvm_vcpu *vcpu); 276 int (*check_requests)(struct kvm_vcpu *vcpu); 277 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 278 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 279 int (*prepare_memory_region)(struct kvm *kvm, 280 const struct kvm_memory_slot *old, 281 struct kvm_memory_slot *new, 282 enum kvm_mr_change change); 283 void (*commit_memory_region)(struct kvm *kvm, 284 struct kvm_memory_slot *old, 285 const struct kvm_memory_slot *new, 286 enum kvm_mr_change change); 287 bool (*unmap_gfn_range)(struct kvm *kvm, struct kvm_gfn_range *range); 288 bool (*age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 289 bool (*test_age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 290 bool (*set_spte_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); 291 void (*free_memslot)(struct kvm_memory_slot *slot); 292 int (*init_vm)(struct kvm *kvm); 293 void (*destroy_vm)(struct kvm *kvm); 294 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 295 int (*emulate_op)(struct kvm_vcpu *vcpu, 296 unsigned int inst, int *advance); 297 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 298 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 299 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 300 int (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 301 unsigned long arg); 302 int (*hcall_implemented)(unsigned long hcall); 303 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 304 struct irq_bypass_producer *); 305 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 306 struct irq_bypass_producer *); 307 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 308 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 309 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode, 310 unsigned long flags); 311 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr); 312 int (*enable_nested)(struct kvm *kvm); 313 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 314 int size); 315 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 316 int size); 317 int (*enable_svm)(struct kvm *kvm); 318 int (*svm_off)(struct kvm *kvm); 319 int (*enable_dawr1)(struct kvm *kvm); 320 bool (*hash_v3_possible)(void); 321 int (*create_vm_debugfs)(struct kvm *kvm); 322 int (*create_vcpu_debugfs)(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry); 323 }; 324 325 extern struct kvmppc_ops *kvmppc_hv_ops; 326 extern struct kvmppc_ops *kvmppc_pr_ops; 327 328 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 329 enum instruction_fetch_type type, ppc_inst_t *inst) 330 { 331 int ret = EMULATE_DONE; 332 u32 fetched_inst; 333 334 /* Load the instruction manually if it failed to do so in the 335 * exit path */ 336 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 337 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 338 339 /* Write fetch_failed unswapped if the fetch failed */ 340 if (ret != EMULATE_DONE) { 341 *inst = ppc_inst(KVM_INST_FETCH_FAILED); 342 return ret; 343 } 344 345 #ifdef CONFIG_PPC64 346 /* Is this a prefixed instruction? */ 347 if ((vcpu->arch.last_inst >> 32) != 0) { 348 u32 prefix = vcpu->arch.last_inst >> 32; 349 u32 suffix = vcpu->arch.last_inst; 350 if (kvmppc_need_byteswap(vcpu)) { 351 prefix = swab32(prefix); 352 suffix = swab32(suffix); 353 } 354 *inst = ppc_inst_prefix(prefix, suffix); 355 return EMULATE_DONE; 356 } 357 #endif 358 359 fetched_inst = kvmppc_need_byteswap(vcpu) ? 360 swab32(vcpu->arch.last_inst) : 361 vcpu->arch.last_inst; 362 *inst = ppc_inst(fetched_inst); 363 return EMULATE_DONE; 364 } 365 366 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 367 { 368 return kvm->arch.kvm_ops == kvmppc_hv_ops; 369 } 370 371 extern int kvmppc_hwrng_present(void); 372 373 /* 374 * Cuts out inst bits with ordering according to spec. 375 * That means the leftmost bit is zero. All given bits are included. 376 */ 377 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 378 { 379 u32 r; 380 u32 mask; 381 382 BUG_ON(msb > lsb); 383 384 mask = (1 << (lsb - msb + 1)) - 1; 385 r = (inst >> (63 - lsb)) & mask; 386 387 return r; 388 } 389 390 /* 391 * Replaces inst bits with ordering according to spec. 392 */ 393 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 394 { 395 u32 r; 396 u32 mask; 397 398 BUG_ON(msb > lsb); 399 400 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 401 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 402 403 return r; 404 } 405 406 #define one_reg_size(id) \ 407 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 408 409 #define get_reg_val(id, reg) ({ \ 410 union kvmppc_one_reg __u; \ 411 switch (one_reg_size(id)) { \ 412 case 4: __u.wval = (reg); break; \ 413 case 8: __u.dval = (reg); break; \ 414 default: BUG(); \ 415 } \ 416 __u; \ 417 }) 418 419 420 #define set_reg_val(id, val) ({ \ 421 u64 __v; \ 422 switch (one_reg_size(id)) { \ 423 case 4: __v = (val).wval; break; \ 424 case 8: __v = (val).dval; break; \ 425 default: BUG(); \ 426 } \ 427 __v; \ 428 }) 429 430 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 431 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 432 433 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 434 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 435 436 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 437 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 438 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 439 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 440 441 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 442 443 struct openpic; 444 445 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 446 extern void kvm_cma_reserve(void) __init; 447 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 448 { 449 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr; 450 } 451 452 static inline void kvmppc_set_xive_tima(int cpu, 453 unsigned long phys_addr, 454 void __iomem *virt_addr) 455 { 456 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 457 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr; 458 } 459 460 static inline u32 kvmppc_get_xics_latch(void) 461 { 462 u32 xirr; 463 464 xirr = get_paca()->kvm_hstate.saved_xirr; 465 get_paca()->kvm_hstate.saved_xirr = 0; 466 return xirr; 467 } 468 469 /* 470 * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to 471 * a CPU thread that's running/napping inside of a guest is by default regarded 472 * as a request to wake the CPU (if needed) and continue execution within the 473 * guest, potentially to process new state like externally-generated 474 * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI). 475 * 476 * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called 477 * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the 478 * target CPU's PACA. To avoid unnecessary exits to the host, this flag should 479 * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on 480 * the receiving side prior to processing the IPI work. 481 * 482 * NOTE: 483 * 484 * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi(). 485 * This is to guard against sequences such as the following: 486 * 487 * CPU 488 * X: smp_muxed_ipi_set_message(): 489 * X: smp_mb() 490 * X: message[RESCHEDULE] = 1 491 * X: doorbell_global_ipi(42): 492 * X: kvmppc_set_host_ipi(42) 493 * X: ppc_msgsnd_sync()/smp_mb() 494 * X: ppc_msgsnd() -> 42 495 * 42: doorbell_exception(): // from CPU X 496 * 42: ppc_msgsync() 497 * 105: smp_muxed_ipi_set_message(): 498 * 105: smb_mb() 499 * // STORE DEFERRED DUE TO RE-ORDERING 500 * --105: message[CALL_FUNCTION] = 1 501 * | 105: doorbell_global_ipi(42): 502 * | 105: kvmppc_set_host_ipi(42) 503 * | 42: kvmppc_clear_host_ipi(42) 504 * | 42: smp_ipi_demux_relaxed() 505 * | 42: // returns to executing guest 506 * | // RE-ORDERED STORE COMPLETES 507 * ->105: message[CALL_FUNCTION] = 1 508 * 105: ppc_msgsnd_sync()/smp_mb() 509 * 105: ppc_msgsnd() -> 42 510 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored 511 * 105: // hangs waiting on 42 to process messages/call_single_queue 512 * 513 * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is 514 * to guard against sequences such as the following (as well as to create 515 * a read-side pairing with the barrier in kvmppc_set_host_ipi()): 516 * 517 * CPU 518 * X: smp_muxed_ipi_set_message(): 519 * X: smp_mb() 520 * X: message[RESCHEDULE] = 1 521 * X: doorbell_global_ipi(42): 522 * X: kvmppc_set_host_ipi(42) 523 * X: ppc_msgsnd_sync()/smp_mb() 524 * X: ppc_msgsnd() -> 42 525 * 42: doorbell_exception(): // from CPU X 526 * 42: ppc_msgsync() 527 * // STORE DEFERRED DUE TO RE-ORDERING 528 * -- 42: kvmppc_clear_host_ipi(42) 529 * | 42: smp_ipi_demux_relaxed() 530 * | 105: smp_muxed_ipi_set_message(): 531 * | 105: smb_mb() 532 * | 105: message[CALL_FUNCTION] = 1 533 * | 105: doorbell_global_ipi(42): 534 * | 105: kvmppc_set_host_ipi(42) 535 * | // RE-ORDERED STORE COMPLETES 536 * -> 42: kvmppc_clear_host_ipi(42) 537 * 42: // returns to executing guest 538 * 105: ppc_msgsnd_sync()/smp_mb() 539 * 105: ppc_msgsnd() -> 42 540 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored 541 * 105: // hangs waiting on 42 to process messages/call_single_queue 542 */ 543 static inline void kvmppc_set_host_ipi(int cpu) 544 { 545 /* 546 * order stores of IPI messages vs. setting of host_ipi flag 547 * 548 * pairs with the barrier in kvmppc_clear_host_ipi() 549 */ 550 smp_mb(); 551 WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 1); 552 } 553 554 static inline void kvmppc_clear_host_ipi(int cpu) 555 { 556 WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 0); 557 /* 558 * order clearing of host_ipi flag vs. processing of IPI messages 559 * 560 * pairs with the barrier in kvmppc_set_host_ipi() 561 */ 562 smp_mb(); 563 } 564 565 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 566 { 567 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 568 } 569 570 extern void kvm_hv_vm_activated(void); 571 extern void kvm_hv_vm_deactivated(void); 572 extern bool kvm_hv_mode_active(void); 573 574 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu); 575 576 #else 577 static inline void __init kvm_cma_reserve(void) 578 {} 579 580 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 581 {} 582 583 static inline void kvmppc_set_xive_tima(int cpu, 584 unsigned long phys_addr, 585 void __iomem *virt_addr) 586 {} 587 588 static inline u32 kvmppc_get_xics_latch(void) 589 { 590 return 0; 591 } 592 593 static inline void kvmppc_set_host_ipi(int cpu) 594 {} 595 596 static inline void kvmppc_clear_host_ipi(int cpu) 597 {} 598 599 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 600 { 601 kvm_vcpu_kick(vcpu); 602 } 603 604 static inline bool kvm_hv_mode_active(void) { return false; } 605 606 #endif 607 608 #ifdef CONFIG_PPC_PSERIES 609 static inline bool kvmhv_on_pseries(void) 610 { 611 return !cpu_has_feature(CPU_FTR_HVMODE); 612 } 613 #else 614 static inline bool kvmhv_on_pseries(void) 615 { 616 return false; 617 } 618 #endif 619 620 #ifdef CONFIG_KVM_XICS 621 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 622 { 623 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 624 } 625 626 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 627 struct kvm *kvm) 628 { 629 if (kvm && kvm_irq_bypass) 630 return kvm->arch.pimap; 631 return NULL; 632 } 633 634 extern void kvmppc_alloc_host_rm_ops(void); 635 extern void kvmppc_free_host_rm_ops(void); 636 extern void kvmppc_free_pimap(struct kvm *kvm); 637 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 638 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 639 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 640 extern int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req); 641 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 642 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 643 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 644 struct kvm_vcpu *vcpu, u32 cpu); 645 extern void kvmppc_xics_ipi_action(void); 646 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 647 unsigned long host_irq); 648 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 649 unsigned long host_irq); 650 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 651 struct kvmppc_irq_map *irq_map, 652 struct kvmppc_passthru_irqmap *pimap, 653 bool *again); 654 655 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 656 int level, bool line_status); 657 658 extern int h_ipi_redirect; 659 #else 660 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 661 struct kvm *kvm) 662 { return NULL; } 663 static inline void kvmppc_alloc_host_rm_ops(void) {} 664 static inline void kvmppc_free_host_rm_ops(void) {} 665 static inline void kvmppc_free_pimap(struct kvm *kvm) {} 666 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 667 { return 0; } 668 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 669 { return 0; } 670 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 671 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 672 { return 0; } 673 static inline int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req) 674 { return 0; } 675 #endif 676 677 #ifdef CONFIG_KVM_XIVE 678 /* 679 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 680 * ie. P9 new interrupt controller, while the second "xive" is the legacy 681 * "eXternal Interrupt Vector Entry" which is the configuration of an 682 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 683 * two function consume or produce a legacy "XIVE" state from the 684 * new "XIVE" interrupt controller. 685 */ 686 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 687 u32 priority); 688 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 689 u32 *priority); 690 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 691 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 692 693 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 694 struct kvm_vcpu *vcpu, u32 cpu); 695 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 696 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 697 unsigned long host_irq); 698 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 699 unsigned long host_irq); 700 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 701 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 702 703 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 704 int level, bool line_status); 705 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 706 extern void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu); 707 extern bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu); 708 709 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 710 { 711 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE; 712 } 713 714 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 715 struct kvm_vcpu *vcpu, u32 cpu); 716 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu); 717 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 718 union kvmppc_one_reg *val); 719 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 720 union kvmppc_one_reg *val); 721 extern bool kvmppc_xive_native_supported(void); 722 723 #else 724 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 725 u32 priority) { return -1; } 726 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 727 u32 *priority) { return -1; } 728 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 729 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 730 731 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 732 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 733 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 734 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 735 struct irq_desc *host_desc) { return -ENODEV; } 736 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 737 struct irq_desc *host_desc) { return -ENODEV; } 738 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 739 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 740 741 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 742 int level, bool line_status) { return -ENODEV; } 743 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } 744 static inline void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu) { } 745 static inline bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu) { return true; } 746 747 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 748 { return 0; } 749 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 750 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 751 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 752 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 753 union kvmppc_one_reg *val) 754 { return 0; } 755 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 756 union kvmppc_one_reg *val) 757 { return -ENOENT; } 758 759 #endif /* CONFIG_KVM_XIVE */ 760 761 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER) 762 static inline bool xics_on_xive(void) 763 { 764 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE); 765 } 766 #else 767 static inline bool xics_on_xive(void) 768 { 769 return false; 770 } 771 #endif 772 773 /* 774 * Prototypes for functions called only from assembler code. 775 * Having prototypes reduces sparse errors. 776 */ 777 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 778 unsigned long ioba, unsigned long tce); 779 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 780 unsigned long liobn, unsigned long ioba, 781 unsigned long tce_list, unsigned long npages); 782 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 783 unsigned long liobn, unsigned long ioba, 784 unsigned long tce_value, unsigned long npages); 785 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 786 unsigned int yield_count); 787 long kvmppc_rm_h_random(struct kvm_vcpu *vcpu); 788 void kvmhv_commence_exit(int trap); 789 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 790 void kvmppc_subcore_enter_guest(void); 791 void kvmppc_subcore_exit_guest(void); 792 long kvmppc_realmode_hmi_handler(void); 793 long kvmppc_p9_realmode_hmi_handler(struct kvm_vcpu *vcpu); 794 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 795 long pte_index, unsigned long pteh, unsigned long ptel); 796 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 797 unsigned long pte_index, unsigned long avpn); 798 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 799 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 800 unsigned long pte_index, unsigned long avpn); 801 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 802 unsigned long pte_index); 803 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 804 unsigned long pte_index); 805 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 806 unsigned long pte_index); 807 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags, 808 unsigned long dest, unsigned long src); 809 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 810 unsigned long slb_v, unsigned int status, bool data); 811 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 812 813 /* 814 * Host-side operations we want to set up while running in real 815 * mode in the guest operating on the xics. 816 * Currently only VCPU wakeup is supported. 817 */ 818 819 union kvmppc_rm_state { 820 unsigned long raw; 821 struct { 822 u32 in_host; 823 u32 rm_action; 824 }; 825 }; 826 827 struct kvmppc_host_rm_core { 828 union kvmppc_rm_state rm_state; 829 void *rm_data; 830 char pad[112]; 831 }; 832 833 struct kvmppc_host_rm_ops { 834 struct kvmppc_host_rm_core *rm_core; 835 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 836 }; 837 838 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 839 840 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 841 { 842 #ifdef CONFIG_KVM_BOOKE_HV 843 return mfspr(SPRN_GEPR); 844 #elif defined(CONFIG_BOOKE) 845 return vcpu->arch.epr; 846 #else 847 return 0; 848 #endif 849 } 850 851 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 852 { 853 #ifdef CONFIG_KVM_BOOKE_HV 854 mtspr(SPRN_GEPR, epr); 855 #elif defined(CONFIG_BOOKE) 856 vcpu->arch.epr = epr; 857 #endif 858 } 859 860 #ifdef CONFIG_KVM_MPIC 861 862 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 863 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 864 u32 cpu); 865 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 866 867 #else 868 869 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 870 { 871 } 872 873 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 874 struct kvm_vcpu *vcpu, u32 cpu) 875 { 876 return -EINVAL; 877 } 878 879 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 880 struct kvm_vcpu *vcpu) 881 { 882 } 883 884 #endif /* CONFIG_KVM_MPIC */ 885 886 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 887 struct kvm_config_tlb *cfg); 888 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 889 struct kvm_dirty_tlb *cfg); 890 891 long kvmppc_alloc_lpid(void); 892 void kvmppc_free_lpid(long lpid); 893 void kvmppc_init_lpid(unsigned long nr_lpids); 894 895 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 896 { 897 struct folio *folio; 898 /* 899 * We can only access pages that the kernel maps 900 * as memory. Bail out for unmapped ones. 901 */ 902 if (!pfn_valid(pfn)) 903 return; 904 905 /* Clear i-cache for new pages */ 906 folio = page_folio(pfn_to_page(pfn)); 907 if (!test_bit(PG_dcache_clean, &folio->flags)) { 908 flush_dcache_icache_folio(folio); 909 set_bit(PG_dcache_clean, &folio->flags); 910 } 911 } 912 913 /* 914 * Shared struct helpers. The shared struct can be little or big endian, 915 * depending on the guest endianness. So expose helpers to all of them. 916 */ 917 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 918 { 919 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 920 /* Only Book3S_64 PR supports bi-endian for now */ 921 return vcpu->arch.shared_big_endian; 922 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 923 /* Book3s_64 HV on little endian is always little endian */ 924 return false; 925 #else 926 return true; 927 #endif 928 } 929 930 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 931 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 932 { \ 933 return mfspr(bookehv_spr); \ 934 } \ 935 936 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 937 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 938 { \ 939 mtspr(bookehv_spr, val); \ 940 } \ 941 942 #define SHARED_WRAPPER_GET(reg, size) \ 943 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 944 { \ 945 if (kvmppc_shared_big_endian(vcpu)) \ 946 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 947 else \ 948 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 949 } \ 950 951 #define SHARED_WRAPPER_SET(reg, size) \ 952 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 953 { \ 954 if (kvmppc_shared_big_endian(vcpu)) \ 955 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 956 else \ 957 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 958 } \ 959 960 #define SHARED_WRAPPER(reg, size) \ 961 SHARED_WRAPPER_GET(reg, size) \ 962 SHARED_WRAPPER_SET(reg, size) \ 963 964 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 965 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 966 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 967 968 #ifdef CONFIG_KVM_BOOKE_HV 969 970 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 971 SPRNG_WRAPPER(reg, bookehv_spr) \ 972 973 #else 974 975 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 976 SHARED_WRAPPER(reg, size) \ 977 978 #endif 979 980 SHARED_WRAPPER(critical, 64) 981 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 982 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 983 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 984 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 985 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 986 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 987 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 988 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 989 SHARED_WRAPPER_GET(msr, 64) 990 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 991 { 992 if (kvmppc_shared_big_endian(vcpu)) 993 vcpu->arch.shared->msr = cpu_to_be64(val); 994 else 995 vcpu->arch.shared->msr = cpu_to_le64(val); 996 } 997 SHARED_WRAPPER(dsisr, 32) 998 SHARED_WRAPPER(int_pending, 32) 999 SHARED_WRAPPER(sprg4, 64) 1000 SHARED_WRAPPER(sprg5, 64) 1001 SHARED_WRAPPER(sprg6, 64) 1002 SHARED_WRAPPER(sprg7, 64) 1003 1004 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 1005 { 1006 if (kvmppc_shared_big_endian(vcpu)) 1007 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 1008 else 1009 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 1010 } 1011 1012 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 1013 { 1014 if (kvmppc_shared_big_endian(vcpu)) 1015 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 1016 else 1017 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 1018 } 1019 1020 /* 1021 * Please call after prepare_to_enter. This function puts the lazy ee and irq 1022 * disabled tracking state back to normal mode, without actually enabling 1023 * interrupts. 1024 */ 1025 static inline void kvmppc_fix_ee_before_entry(void) 1026 { 1027 trace_hardirqs_on(); 1028 1029 #ifdef CONFIG_PPC64 1030 /* 1031 * To avoid races, the caller must have gone directly from having 1032 * interrupts fully-enabled to hard-disabled. 1033 */ 1034 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 1035 1036 /* Only need to enable IRQs by hard enabling them after this */ 1037 local_paca->irq_happened = 0; 1038 irq_soft_mask_set(IRQS_ENABLED); 1039 #endif 1040 } 1041 1042 static inline void kvmppc_fix_ee_after_exit(void) 1043 { 1044 #ifdef CONFIG_PPC64 1045 /* Only need to enable IRQs by hard enabling them after this */ 1046 local_paca->irq_happened = PACA_IRQ_HARD_DIS; 1047 irq_soft_mask_set(IRQS_ALL_DISABLED); 1048 #endif 1049 1050 trace_hardirqs_off(); 1051 } 1052 1053 1054 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 1055 { 1056 ulong ea; 1057 ulong msr_64bit = 0; 1058 1059 ea = kvmppc_get_gpr(vcpu, rb); 1060 if (ra) 1061 ea += kvmppc_get_gpr(vcpu, ra); 1062 1063 #if defined(CONFIG_PPC_BOOK3E_64) 1064 msr_64bit = MSR_CM; 1065 #elif defined(CONFIG_PPC_BOOK3S_64) 1066 msr_64bit = MSR_SF; 1067 #endif 1068 1069 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 1070 ea = (uint32_t)ea; 1071 1072 return ea; 1073 } 1074 1075 extern void xics_wake_cpu(int cpu); 1076 1077 #endif /* __POWERPC_KVM_PPC_H__ */ 1078