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