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 void (*free_memslot)(struct kvm_memory_slot *slot); 291 int (*init_vm)(struct kvm *kvm); 292 void (*destroy_vm)(struct kvm *kvm); 293 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 294 int (*emulate_op)(struct kvm_vcpu *vcpu, 295 unsigned int inst, int *advance); 296 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 297 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 298 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 299 int (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 300 unsigned long arg); 301 int (*hcall_implemented)(unsigned long hcall); 302 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 303 struct irq_bypass_producer *); 304 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 305 struct irq_bypass_producer *); 306 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 307 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 308 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode, 309 unsigned long flags); 310 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr); 311 int (*enable_nested)(struct kvm *kvm); 312 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 313 int size); 314 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 315 int size); 316 int (*enable_svm)(struct kvm *kvm); 317 int (*svm_off)(struct kvm *kvm); 318 int (*enable_dawr1)(struct kvm *kvm); 319 bool (*hash_v3_possible)(void); 320 int (*create_vm_debugfs)(struct kvm *kvm); 321 int (*create_vcpu_debugfs)(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry); 322 }; 323 324 extern struct kvmppc_ops *kvmppc_hv_ops; 325 extern struct kvmppc_ops *kvmppc_pr_ops; 326 kvmppc_get_last_inst(struct kvm_vcpu * vcpu,enum instruction_fetch_type type,ppc_inst_t * inst)327 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 328 enum instruction_fetch_type type, ppc_inst_t *inst) 329 { 330 int ret = EMULATE_DONE; 331 u32 fetched_inst; 332 333 /* Load the instruction manually if it failed to do so in the 334 * exit path */ 335 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 336 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 337 338 /* Write fetch_failed unswapped if the fetch failed */ 339 if (ret != EMULATE_DONE) { 340 *inst = ppc_inst(KVM_INST_FETCH_FAILED); 341 return ret; 342 } 343 344 #ifdef CONFIG_PPC64 345 /* Is this a prefixed instruction? */ 346 if ((vcpu->arch.last_inst >> 32) != 0) { 347 u32 prefix = vcpu->arch.last_inst >> 32; 348 u32 suffix = vcpu->arch.last_inst; 349 if (kvmppc_need_byteswap(vcpu)) { 350 prefix = swab32(prefix); 351 suffix = swab32(suffix); 352 } 353 *inst = ppc_inst_prefix(prefix, suffix); 354 return EMULATE_DONE; 355 } 356 #endif 357 358 fetched_inst = kvmppc_need_byteswap(vcpu) ? 359 swab32(vcpu->arch.last_inst) : 360 vcpu->arch.last_inst; 361 *inst = ppc_inst(fetched_inst); 362 return EMULATE_DONE; 363 } 364 is_kvmppc_hv_enabled(struct kvm * kvm)365 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 366 { 367 return kvm->arch.kvm_ops == kvmppc_hv_ops; 368 } 369 370 extern int kvmppc_hwrng_present(void); 371 372 /* 373 * Cuts out inst bits with ordering according to spec. 374 * That means the leftmost bit is zero. All given bits are included. 375 */ kvmppc_get_field(u64 inst,int msb,int lsb)376 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 377 { 378 u32 r; 379 u32 mask; 380 381 BUG_ON(msb > lsb); 382 383 mask = (1 << (lsb - msb + 1)) - 1; 384 r = (inst >> (63 - lsb)) & mask; 385 386 return r; 387 } 388 389 /* 390 * Replaces inst bits with ordering according to spec. 391 */ kvmppc_set_field(u64 inst,int msb,int lsb,int value)392 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 393 { 394 u32 r; 395 u32 mask; 396 397 BUG_ON(msb > lsb); 398 399 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 400 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 401 402 return r; 403 } 404 405 #define one_reg_size(id) \ 406 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 407 408 #define get_reg_val(id, reg) ({ \ 409 union kvmppc_one_reg __u; \ 410 switch (one_reg_size(id)) { \ 411 case 4: __u.wval = (reg); break; \ 412 case 8: __u.dval = (reg); break; \ 413 default: BUG(); \ 414 } \ 415 __u; \ 416 }) 417 418 419 #define set_reg_val(id, val) ({ \ 420 u64 __v; \ 421 switch (one_reg_size(id)) { \ 422 case 4: __v = (val).wval; break; \ 423 case 8: __v = (val).dval; break; \ 424 default: BUG(); \ 425 } \ 426 __v; \ 427 }) 428 429 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 430 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 431 432 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 433 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 434 435 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 436 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 437 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 438 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 439 440 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 441 442 struct openpic; 443 444 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 445 extern void kvm_cma_reserve(void) __init; kvmppc_set_xics_phys(int cpu,unsigned long addr)446 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 447 { 448 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr; 449 } 450 kvmppc_set_xive_tima(int cpu,unsigned long phys_addr,void __iomem * virt_addr)451 static inline void kvmppc_set_xive_tima(int cpu, 452 unsigned long phys_addr, 453 void __iomem *virt_addr) 454 { 455 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 456 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr; 457 } 458 kvmppc_get_xics_latch(void)459 static inline u32 kvmppc_get_xics_latch(void) 460 { 461 u32 xirr; 462 463 xirr = get_paca()->kvm_hstate.saved_xirr; 464 get_paca()->kvm_hstate.saved_xirr = 0; 465 return xirr; 466 } 467 468 /* 469 * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to 470 * a CPU thread that's running/napping inside of a guest is by default regarded 471 * as a request to wake the CPU (if needed) and continue execution within the 472 * guest, potentially to process new state like externally-generated 473 * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI). 474 * 475 * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called 476 * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the 477 * target CPU's PACA. To avoid unnecessary exits to the host, this flag should 478 * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on 479 * the receiving side prior to processing the IPI work. 480 * 481 * NOTE: 482 * 483 * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi(). 484 * This is to guard against sequences such as the following: 485 * 486 * CPU 487 * X: smp_muxed_ipi_set_message(): 488 * X: smp_mb() 489 * X: message[RESCHEDULE] = 1 490 * X: doorbell_global_ipi(42): 491 * X: kvmppc_set_host_ipi(42) 492 * X: ppc_msgsnd_sync()/smp_mb() 493 * X: ppc_msgsnd() -> 42 494 * 42: doorbell_exception(): // from CPU X 495 * 42: ppc_msgsync() 496 * 105: smp_muxed_ipi_set_message(): 497 * 105: smb_mb() 498 * // STORE DEFERRED DUE TO RE-ORDERING 499 * --105: message[CALL_FUNCTION] = 1 500 * | 105: doorbell_global_ipi(42): 501 * | 105: kvmppc_set_host_ipi(42) 502 * | 42: kvmppc_clear_host_ipi(42) 503 * | 42: smp_ipi_demux_relaxed() 504 * | 42: // returns to executing guest 505 * | // RE-ORDERED STORE COMPLETES 506 * ->105: message[CALL_FUNCTION] = 1 507 * 105: ppc_msgsnd_sync()/smp_mb() 508 * 105: ppc_msgsnd() -> 42 509 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored 510 * 105: // hangs waiting on 42 to process messages/call_single_queue 511 * 512 * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is 513 * to guard against sequences such as the following (as well as to create 514 * a read-side pairing with the barrier in kvmppc_set_host_ipi()): 515 * 516 * CPU 517 * X: smp_muxed_ipi_set_message(): 518 * X: smp_mb() 519 * X: message[RESCHEDULE] = 1 520 * X: doorbell_global_ipi(42): 521 * X: kvmppc_set_host_ipi(42) 522 * X: ppc_msgsnd_sync()/smp_mb() 523 * X: ppc_msgsnd() -> 42 524 * 42: doorbell_exception(): // from CPU X 525 * 42: ppc_msgsync() 526 * // STORE DEFERRED DUE TO RE-ORDERING 527 * -- 42: kvmppc_clear_host_ipi(42) 528 * | 42: smp_ipi_demux_relaxed() 529 * | 105: smp_muxed_ipi_set_message(): 530 * | 105: smb_mb() 531 * | 105: message[CALL_FUNCTION] = 1 532 * | 105: doorbell_global_ipi(42): 533 * | 105: kvmppc_set_host_ipi(42) 534 * | // RE-ORDERED STORE COMPLETES 535 * -> 42: kvmppc_clear_host_ipi(42) 536 * 42: // returns to executing guest 537 * 105: ppc_msgsnd_sync()/smp_mb() 538 * 105: ppc_msgsnd() -> 42 539 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored 540 * 105: // hangs waiting on 42 to process messages/call_single_queue 541 */ kvmppc_set_host_ipi(int cpu)542 static inline void kvmppc_set_host_ipi(int cpu) 543 { 544 /* 545 * order stores of IPI messages vs. setting of host_ipi flag 546 * 547 * pairs with the barrier in kvmppc_clear_host_ipi() 548 */ 549 smp_mb(); 550 WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 1); 551 } 552 kvmppc_clear_host_ipi(int cpu)553 static inline void kvmppc_clear_host_ipi(int cpu) 554 { 555 WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 0); 556 /* 557 * order clearing of host_ipi flag vs. processing of IPI messages 558 * 559 * pairs with the barrier in kvmppc_set_host_ipi() 560 */ 561 smp_mb(); 562 } 563 kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)564 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 565 { 566 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 567 } 568 569 extern void kvm_hv_vm_activated(void); 570 extern void kvm_hv_vm_deactivated(void); 571 extern bool kvm_hv_mode_active(void); 572 573 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu); 574 575 #else kvm_cma_reserve(void)576 static inline void __init kvm_cma_reserve(void) 577 {} 578 kvmppc_set_xics_phys(int cpu,unsigned long addr)579 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 580 {} 581 kvmppc_set_xive_tima(int cpu,unsigned long phys_addr,void __iomem * virt_addr)582 static inline void kvmppc_set_xive_tima(int cpu, 583 unsigned long phys_addr, 584 void __iomem *virt_addr) 585 {} 586 kvmppc_get_xics_latch(void)587 static inline u32 kvmppc_get_xics_latch(void) 588 { 589 return 0; 590 } 591 kvmppc_set_host_ipi(int cpu)592 static inline void kvmppc_set_host_ipi(int cpu) 593 {} 594 kvmppc_clear_host_ipi(int cpu)595 static inline void kvmppc_clear_host_ipi(int cpu) 596 {} 597 kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)598 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 599 { 600 kvm_vcpu_kick(vcpu); 601 } 602 kvm_hv_mode_active(void)603 static inline bool kvm_hv_mode_active(void) { return false; } 604 605 #endif 606 607 #ifdef CONFIG_PPC_PSERIES kvmhv_on_pseries(void)608 static inline bool kvmhv_on_pseries(void) 609 { 610 return !cpu_has_feature(CPU_FTR_HVMODE); 611 } 612 #else kvmhv_on_pseries(void)613 static inline bool kvmhv_on_pseries(void) 614 { 615 return false; 616 } 617 618 #endif 619 620 #ifndef CONFIG_PPC_BOOK3S 621 kvmhv_is_nestedv2(void)622 static inline bool kvmhv_is_nestedv2(void) 623 { 624 return false; 625 } 626 kvmhv_is_nestedv1(void)627 static inline bool kvmhv_is_nestedv1(void) 628 { 629 return false; 630 } 631 kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu * vcpu,struct pt_regs * regs)632 static inline int kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, 633 struct pt_regs *regs) 634 { 635 return 0; 636 } kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu * vcpu,struct pt_regs * regs)637 static inline int kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu, 638 struct pt_regs *regs) 639 { 640 return 0; 641 } 642 kvmhv_nestedv2_mark_dirty(struct kvm_vcpu * vcpu,u16 iden)643 static inline int kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden) 644 { 645 return 0; 646 } 647 kvmhv_nestedv2_cached_reload(struct kvm_vcpu * vcpu,u16 iden)648 static inline int kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden) 649 { 650 return 0; 651 } 652 653 #endif 654 655 #ifdef CONFIG_KVM_XICS kvmppc_xics_enabled(struct kvm_vcpu * vcpu)656 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 657 { 658 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 659 } 660 kvmppc_get_passthru_irqmap(struct kvm * kvm)661 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 662 struct kvm *kvm) 663 { 664 if (kvm && kvm_irq_bypass) 665 return kvm->arch.pimap; 666 return NULL; 667 } 668 669 extern void kvmppc_alloc_host_rm_ops(void); 670 extern void kvmppc_free_host_rm_ops(void); 671 extern void kvmppc_free_pimap(struct kvm *kvm); 672 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 673 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 674 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 675 extern int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req); 676 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 677 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 678 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 679 struct kvm_vcpu *vcpu, u32 cpu); 680 extern void kvmppc_xics_ipi_action(void); 681 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 682 unsigned long host_irq); 683 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 684 unsigned long host_irq); 685 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 686 struct kvmppc_irq_map *irq_map, 687 struct kvmppc_passthru_irqmap *pimap, 688 bool *again); 689 690 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 691 int level, bool line_status); 692 693 extern int h_ipi_redirect; 694 #else kvmppc_get_passthru_irqmap(struct kvm * kvm)695 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 696 struct kvm *kvm) 697 { return NULL; } kvmppc_alloc_host_rm_ops(void)698 static inline void kvmppc_alloc_host_rm_ops(void) {} kvmppc_free_host_rm_ops(void)699 static inline void kvmppc_free_host_rm_ops(void) {} kvmppc_free_pimap(struct kvm * kvm)700 static inline void kvmppc_free_pimap(struct kvm *kvm) {} kvmppc_xics_rm_complete(struct kvm_vcpu * vcpu,u32 hcall)701 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 702 { return 0; } kvmppc_xics_enabled(struct kvm_vcpu * vcpu)703 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 704 { return 0; } kvmppc_xics_free_icp(struct kvm_vcpu * vcpu)705 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } kvmppc_xics_hcall(struct kvm_vcpu * vcpu,u32 cmd)706 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 707 { return 0; } kvmppc_xive_xics_hcall(struct kvm_vcpu * vcpu,u32 req)708 static inline int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req) 709 { return 0; } 710 #endif 711 712 #ifdef CONFIG_KVM_XIVE 713 /* 714 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 715 * ie. P9 new interrupt controller, while the second "xive" is the legacy 716 * "eXternal Interrupt Vector Entry" which is the configuration of an 717 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 718 * two function consume or produce a legacy "XIVE" state from the 719 * new "XIVE" interrupt controller. 720 */ 721 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 722 u32 priority); 723 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 724 u32 *priority); 725 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 726 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 727 728 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 729 struct kvm_vcpu *vcpu, u32 cpu); 730 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 731 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 732 unsigned long host_irq); 733 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 734 unsigned long host_irq); 735 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 736 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 737 738 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 739 int level, bool line_status); 740 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 741 extern void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu); 742 extern bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu); 743 kvmppc_xive_enabled(struct kvm_vcpu * vcpu)744 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 745 { 746 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE; 747 } 748 749 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 750 struct kvm_vcpu *vcpu, u32 cpu); 751 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu); 752 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 753 union kvmppc_one_reg *val); 754 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 755 union kvmppc_one_reg *val); 756 extern bool kvmppc_xive_native_supported(void); 757 758 #else kvmppc_xive_set_xive(struct kvm * kvm,u32 irq,u32 server,u32 priority)759 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 760 u32 priority) { return -1; } kvmppc_xive_get_xive(struct kvm * kvm,u32 irq,u32 * server,u32 * priority)761 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 762 u32 *priority) { return -1; } kvmppc_xive_int_on(struct kvm * kvm,u32 irq)763 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } kvmppc_xive_int_off(struct kvm * kvm,u32 irq)764 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 765 kvmppc_xive_connect_vcpu(struct kvm_device * dev,struct kvm_vcpu * vcpu,u32 cpu)766 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 767 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } kvmppc_xive_cleanup_vcpu(struct kvm_vcpu * vcpu)768 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } kvmppc_xive_set_mapped(struct kvm * kvm,unsigned long guest_irq,struct irq_desc * host_desc)769 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 770 struct irq_desc *host_desc) { return -ENODEV; } kvmppc_xive_clr_mapped(struct kvm * kvm,unsigned long guest_irq,struct irq_desc * host_desc)771 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 772 struct irq_desc *host_desc) { return -ENODEV; } kvmppc_xive_get_icp(struct kvm_vcpu * vcpu)773 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } kvmppc_xive_set_icp(struct kvm_vcpu * vcpu,u64 icpval)774 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 775 kvmppc_xive_set_irq(struct kvm * kvm,int irq_source_id,u32 irq,int level,bool line_status)776 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 777 int level, bool line_status) { return -ENODEV; } kvmppc_xive_push_vcpu(struct kvm_vcpu * vcpu)778 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } kvmppc_xive_pull_vcpu(struct kvm_vcpu * vcpu)779 static inline void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu) { } kvmppc_xive_rearm_escalation(struct kvm_vcpu * vcpu)780 static inline bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu) { return true; } 781 kvmppc_xive_enabled(struct kvm_vcpu * vcpu)782 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 783 { return 0; } kvmppc_xive_native_connect_vcpu(struct kvm_device * dev,struct kvm_vcpu * vcpu,u32 cpu)784 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 785 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu * vcpu)786 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { } kvmppc_xive_native_get_vp(struct kvm_vcpu * vcpu,union kvmppc_one_reg * val)787 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 788 union kvmppc_one_reg *val) 789 { return 0; } kvmppc_xive_native_set_vp(struct kvm_vcpu * vcpu,union kvmppc_one_reg * val)790 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 791 union kvmppc_one_reg *val) 792 { return -ENOENT; } 793 794 #endif /* CONFIG_KVM_XIVE */ 795 796 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER) xics_on_xive(void)797 static inline bool xics_on_xive(void) 798 { 799 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE); 800 } 801 #else xics_on_xive(void)802 static inline bool xics_on_xive(void) 803 { 804 return false; 805 } 806 #endif 807 808 /* 809 * Prototypes for functions called only from assembler code. 810 * Having prototypes reduces sparse errors. 811 */ 812 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 813 unsigned long ioba, unsigned long tce); 814 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 815 unsigned long liobn, unsigned long ioba, 816 unsigned long tce_list, unsigned long npages); 817 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 818 unsigned long liobn, unsigned long ioba, 819 unsigned long tce_value, unsigned long npages); 820 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 821 unsigned int yield_count); 822 long kvmppc_rm_h_random(struct kvm_vcpu *vcpu); 823 void kvmhv_commence_exit(int trap); 824 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 825 void kvmppc_subcore_enter_guest(void); 826 void kvmppc_subcore_exit_guest(void); 827 long kvmppc_realmode_hmi_handler(void); 828 long kvmppc_p9_realmode_hmi_handler(struct kvm_vcpu *vcpu); 829 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 830 long pte_index, unsigned long pteh, unsigned long ptel); 831 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 832 unsigned long pte_index, unsigned long avpn); 833 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 834 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 835 unsigned long pte_index, unsigned long avpn); 836 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 837 unsigned long pte_index); 838 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 839 unsigned long pte_index); 840 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 841 unsigned long pte_index); 842 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags, 843 unsigned long dest, unsigned long src); 844 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 845 unsigned long slb_v, unsigned int status, bool data); 846 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 847 848 /* 849 * Host-side operations we want to set up while running in real 850 * mode in the guest operating on the xics. 851 * Currently only VCPU wakeup is supported. 852 */ 853 854 union kvmppc_rm_state { 855 unsigned long raw; 856 struct { 857 u32 in_host; 858 u32 rm_action; 859 }; 860 }; 861 862 struct kvmppc_host_rm_core { 863 union kvmppc_rm_state rm_state; 864 void *rm_data; 865 char pad[112]; 866 }; 867 868 struct kvmppc_host_rm_ops { 869 struct kvmppc_host_rm_core *rm_core; 870 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 871 }; 872 873 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 874 kvmppc_get_epr(struct kvm_vcpu * vcpu)875 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 876 { 877 #ifdef CONFIG_KVM_BOOKE_HV 878 return mfspr(SPRN_GEPR); 879 #elif defined(CONFIG_BOOKE) 880 return vcpu->arch.epr; 881 #else 882 return 0; 883 #endif 884 } 885 kvmppc_set_epr(struct kvm_vcpu * vcpu,u32 epr)886 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 887 { 888 #ifdef CONFIG_KVM_BOOKE_HV 889 mtspr(SPRN_GEPR, epr); 890 #elif defined(CONFIG_BOOKE) 891 vcpu->arch.epr = epr; 892 #endif 893 } 894 895 #ifdef CONFIG_KVM_MPIC 896 897 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 898 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 899 u32 cpu); 900 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 901 902 #else 903 kvmppc_mpic_set_epr(struct kvm_vcpu * vcpu)904 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 905 { 906 } 907 kvmppc_mpic_connect_vcpu(struct kvm_device * dev,struct kvm_vcpu * vcpu,u32 cpu)908 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 909 struct kvm_vcpu *vcpu, u32 cpu) 910 { 911 return -EINVAL; 912 } 913 kvmppc_mpic_disconnect_vcpu(struct openpic * opp,struct kvm_vcpu * vcpu)914 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 915 struct kvm_vcpu *vcpu) 916 { 917 } 918 919 #endif /* CONFIG_KVM_MPIC */ 920 921 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 922 struct kvm_config_tlb *cfg); 923 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 924 struct kvm_dirty_tlb *cfg); 925 926 long kvmppc_alloc_lpid(void); 927 void kvmppc_free_lpid(long lpid); 928 void kvmppc_init_lpid(unsigned long nr_lpids); 929 kvmppc_mmu_flush_icache(kvm_pfn_t pfn)930 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 931 { 932 struct folio *folio; 933 /* 934 * We can only access pages that the kernel maps 935 * as memory. Bail out for unmapped ones. 936 */ 937 if (!pfn_valid(pfn)) 938 return; 939 940 /* Clear i-cache for new pages */ 941 folio = page_folio(pfn_to_page(pfn)); 942 if (!test_bit(PG_dcache_clean, &folio->flags)) { 943 flush_dcache_icache_folio(folio); 944 set_bit(PG_dcache_clean, &folio->flags); 945 } 946 } 947 948 /* 949 * Shared struct helpers. The shared struct can be little or big endian, 950 * depending on the guest endianness. So expose helpers to all of them. 951 */ kvmppc_shared_big_endian(struct kvm_vcpu * vcpu)952 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 953 { 954 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 955 /* Only Book3S_64 PR supports bi-endian for now */ 956 return vcpu->arch.shared_big_endian; 957 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 958 /* Book3s_64 HV on little endian is always little endian */ 959 return false; 960 #else 961 return true; 962 #endif 963 } 964 965 #define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_GET(reg, bookehv_spr) \ 966 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 967 { \ 968 return mfspr(bookehv_spr); \ 969 } \ 970 971 #define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_SET(reg, bookehv_spr) \ 972 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 973 { \ 974 mtspr(bookehv_spr, val); \ 975 } \ 976 977 #define KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(reg, size, iden) \ 978 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 979 { \ 980 if (iden) \ 981 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \ 982 if (kvmppc_shared_big_endian(vcpu)) \ 983 return be##size##_to_cpu((__be##size __force)vcpu->arch.shared->reg); \ 984 else \ 985 return le##size##_to_cpu((__le##size __force)vcpu->arch.shared->reg); \ 986 } \ 987 988 #define KVMPPC_VCPU_SHARED_REGS_ACCESSOR_SET(reg, size, iden) \ 989 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 990 { \ 991 if (kvmppc_shared_big_endian(vcpu)) \ 992 vcpu->arch.shared->reg = (u##size __force)cpu_to_be##size(val); \ 993 else \ 994 vcpu->arch.shared->reg = (u##size __force)cpu_to_le##size(val); \ 995 \ 996 if (iden) \ 997 kvmhv_nestedv2_mark_dirty(vcpu, iden); \ 998 } \ 999 1000 #define KVMPPC_VCPU_SHARED_REGS_ACCESSOR(reg, size, iden) \ 1001 KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(reg, size, iden) \ 1002 KVMPPC_VCPU_SHARED_REGS_ACCESSOR_SET(reg, size, iden) \ 1003 1004 #define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR(reg, bookehv_spr) \ 1005 KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_GET(reg, bookehv_spr) \ 1006 KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_SET(reg, bookehv_spr) \ 1007 1008 #ifdef CONFIG_KVM_BOOKE_HV 1009 1010 #define KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(reg, size, bookehv_spr, iden) \ 1011 KVMPPC_BOOKE_HV_SPRNG_ACCESSOR(reg, bookehv_spr) \ 1012 1013 #else 1014 1015 #define KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(reg, size, bookehv_spr, iden) \ 1016 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(reg, size, iden) \ 1017 1018 #endif 1019 1020 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(critical, 64, 0) 1021 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg0, 64, SPRN_GSPRG0, KVMPPC_GSID_SPRG0) 1022 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg1, 64, SPRN_GSPRG1, KVMPPC_GSID_SPRG1) 1023 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg2, 64, SPRN_GSPRG2, KVMPPC_GSID_SPRG2) 1024 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg3, 64, SPRN_GSPRG3, KVMPPC_GSID_SPRG3) 1025 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(srr0, 64, SPRN_GSRR0, KVMPPC_GSID_SRR0) 1026 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(srr1, 64, SPRN_GSRR1, KVMPPC_GSID_SRR1) 1027 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(dar, 64, SPRN_GDEAR, KVMPPC_GSID_DAR) 1028 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(esr, 64, SPRN_GESR, 0) 1029 KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(msr, 64, KVMPPC_GSID_MSR) kvmppc_set_msr_fast(struct kvm_vcpu * vcpu,u64 val)1030 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 1031 { 1032 if (kvmppc_shared_big_endian(vcpu)) 1033 vcpu->arch.shared->msr = cpu_to_be64(val); 1034 else 1035 vcpu->arch.shared->msr = cpu_to_le64(val); 1036 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_MSR); 1037 } 1038 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(dsisr, 32, KVMPPC_GSID_DSISR) 1039 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(int_pending, 32, 0) 1040 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg4, 64, 0) 1041 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg5, 64, 0) 1042 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg6, 64, 0) 1043 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg7, 64, 0) 1044 kvmppc_get_sr(struct kvm_vcpu * vcpu,int nr)1045 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 1046 { 1047 if (kvmppc_shared_big_endian(vcpu)) 1048 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 1049 else 1050 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 1051 } 1052 kvmppc_set_sr(struct kvm_vcpu * vcpu,int nr,u32 val)1053 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 1054 { 1055 if (kvmppc_shared_big_endian(vcpu)) 1056 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 1057 else 1058 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 1059 } 1060 1061 /* 1062 * Please call after prepare_to_enter. This function puts the lazy ee and irq 1063 * disabled tracking state back to normal mode, without actually enabling 1064 * interrupts. 1065 */ kvmppc_fix_ee_before_entry(void)1066 static inline void kvmppc_fix_ee_before_entry(void) 1067 { 1068 trace_hardirqs_on(); 1069 1070 #ifdef CONFIG_PPC64 1071 /* 1072 * To avoid races, the caller must have gone directly from having 1073 * interrupts fully-enabled to hard-disabled. 1074 */ 1075 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 1076 1077 /* Only need to enable IRQs by hard enabling them after this */ 1078 local_paca->irq_happened = 0; 1079 irq_soft_mask_set(IRQS_ENABLED); 1080 #endif 1081 } 1082 kvmppc_fix_ee_after_exit(void)1083 static inline void kvmppc_fix_ee_after_exit(void) 1084 { 1085 #ifdef CONFIG_PPC64 1086 /* Only need to enable IRQs by hard enabling them after this */ 1087 local_paca->irq_happened = PACA_IRQ_HARD_DIS; 1088 irq_soft_mask_set(IRQS_ALL_DISABLED); 1089 #endif 1090 1091 trace_hardirqs_off(); 1092 } 1093 1094 kvmppc_get_ea_indexed(struct kvm_vcpu * vcpu,int ra,int rb)1095 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 1096 { 1097 ulong ea; 1098 ulong msr_64bit = 0; 1099 1100 ea = kvmppc_get_gpr(vcpu, rb); 1101 if (ra) 1102 ea += kvmppc_get_gpr(vcpu, ra); 1103 1104 #if defined(CONFIG_PPC_BOOK3E_64) 1105 msr_64bit = MSR_CM; 1106 #elif defined(CONFIG_PPC_BOOK3S_64) 1107 msr_64bit = MSR_SF; 1108 #endif 1109 1110 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 1111 ea = (uint32_t)ea; 1112 1113 return ea; 1114 } 1115 1116 extern void xics_wake_cpu(int cpu); 1117 1118 #endif /* __POWERPC_KVM_PPC_H__ */ 1119