1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License, version 2, as 4 * published by the Free Software Foundation. 5 * 6 * This program is distributed in the hope that it will be useful, 7 * but WITHOUT ANY WARRANTY; without even the implied warranty of 8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9 * GNU General Public License for more details. 10 * 11 * You should have received a copy of the GNU General Public License 12 * along with this program; if not, write to the Free Software 13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 14 * 15 * Copyright IBM Corp. 2008 16 * 17 * Authors: Hollis Blanchard <hollisb@us.ibm.com> 18 */ 19 20 #ifndef __POWERPC_KVM_PPC_H__ 21 #define __POWERPC_KVM_PPC_H__ 22 23 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header 24 * dependencies. */ 25 26 #include <linux/mutex.h> 27 #include <linux/timer.h> 28 #include <linux/types.h> 29 #include <linux/kvm_types.h> 30 #include <linux/kvm_host.h> 31 #include <linux/bug.h> 32 #ifdef CONFIG_PPC_BOOK3S 33 #include <asm/kvm_book3s.h> 34 #else 35 #include <asm/kvm_booke.h> 36 #endif 37 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 38 #include <asm/paca.h> 39 #endif 40 41 enum emulation_result { 42 EMULATE_DONE, /* no further processing */ 43 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 44 EMULATE_FAIL, /* can't emulate this instruction */ 45 EMULATE_AGAIN, /* something went wrong. go again */ 46 EMULATE_EXIT_USER, /* emulation requires exit to user-space */ 47 }; 48 49 enum instruction_type { 50 INST_GENERIC, 51 INST_SC, /* system call */ 52 }; 53 54 enum xlate_instdata { 55 XLATE_INST, /* translate instruction address */ 56 XLATE_DATA /* translate data address */ 57 }; 58 59 enum xlate_readwrite { 60 XLATE_READ, /* check for read permissions */ 61 XLATE_WRITE /* check for write permissions */ 62 }; 63 64 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 65 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 66 extern void kvmppc_handler_highmem(void); 67 68 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 69 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 70 unsigned int rt, unsigned int bytes, 71 int is_default_endian); 72 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 73 unsigned int rt, unsigned int bytes, 74 int is_default_endian); 75 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 76 u64 val, unsigned int bytes, 77 int is_default_endian); 78 79 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, 80 enum instruction_type type, u32 *inst); 81 82 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 83 bool data); 84 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 85 bool data); 86 extern int kvmppc_emulate_instruction(struct kvm_run *run, 87 struct kvm_vcpu *vcpu); 88 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 89 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 90 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 91 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 92 extern void kvmppc_decrementer_func(unsigned long data); 93 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 94 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 95 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 96 97 /* Core-specific hooks */ 98 99 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 100 unsigned int gtlb_idx); 101 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 102 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 103 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 104 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 105 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 106 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 107 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 108 gva_t eaddr); 109 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 110 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 111 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 112 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 113 struct kvmppc_pte *pte); 114 115 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 116 unsigned int id); 117 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 118 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 119 extern int kvmppc_core_check_processor_compat(void); 120 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 121 struct kvm_translation *tr); 122 123 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 124 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 125 126 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 127 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 128 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 129 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 130 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 131 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 132 struct kvm_interrupt *irq); 133 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 134 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 135 ulong esr_flags); 136 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 137 ulong dear_flags, 138 ulong esr_flags); 139 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 140 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 141 ulong esr_flags); 142 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 143 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 144 145 extern int kvmppc_booke_init(void); 146 extern void kvmppc_booke_exit(void); 147 148 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 149 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 150 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 151 152 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); 153 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); 154 extern void kvmppc_free_hpt(struct kvm *kvm); 155 extern long kvmppc_prepare_vrma(struct kvm *kvm, 156 struct kvm_userspace_memory_region *mem); 157 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 158 struct kvm_memory_slot *memslot, unsigned long porder); 159 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 160 161 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 162 struct kvm_create_spapr_tce *args); 163 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 164 unsigned long ioba, unsigned long tce); 165 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 166 unsigned long ioba); 167 extern struct kvm_rma_info *kvm_alloc_rma(void); 168 extern void kvm_release_rma(struct kvm_rma_info *ri); 169 extern struct page *kvm_alloc_hpt(unsigned long nr_pages); 170 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages); 171 extern int kvmppc_core_init_vm(struct kvm *kvm); 172 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 173 extern void kvmppc_core_free_memslot(struct kvm *kvm, 174 struct kvm_memory_slot *free, 175 struct kvm_memory_slot *dont); 176 extern int kvmppc_core_create_memslot(struct kvm *kvm, 177 struct kvm_memory_slot *slot, 178 unsigned long npages); 179 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 180 struct kvm_memory_slot *memslot, 181 struct kvm_userspace_memory_region *mem); 182 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 183 struct kvm_userspace_memory_region *mem, 184 const struct kvm_memory_slot *old); 185 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 186 struct kvm_ppc_smmu_info *info); 187 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 188 struct kvm_memory_slot *memslot); 189 190 extern int kvmppc_bookehv_init(void); 191 extern void kvmppc_bookehv_exit(void); 192 193 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 194 195 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 196 197 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 198 199 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 200 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 201 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 202 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 203 u32 priority); 204 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 205 u32 *priority); 206 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 207 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 208 209 union kvmppc_one_reg { 210 u32 wval; 211 u64 dval; 212 vector128 vval; 213 u64 vsxval[2]; 214 struct { 215 u64 addr; 216 u64 length; 217 } vpaval; 218 }; 219 220 struct kvmppc_ops { 221 struct module *owner; 222 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 223 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 224 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 225 union kvmppc_one_reg *val); 226 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 227 union kvmppc_one_reg *val); 228 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 229 void (*vcpu_put)(struct kvm_vcpu *vcpu); 230 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 231 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 232 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 233 void (*vcpu_free)(struct kvm_vcpu *vcpu); 234 int (*check_requests)(struct kvm_vcpu *vcpu); 235 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 236 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 237 int (*prepare_memory_region)(struct kvm *kvm, 238 struct kvm_memory_slot *memslot, 239 struct kvm_userspace_memory_region *mem); 240 void (*commit_memory_region)(struct kvm *kvm, 241 struct kvm_userspace_memory_region *mem, 242 const struct kvm_memory_slot *old); 243 int (*unmap_hva)(struct kvm *kvm, unsigned long hva); 244 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 245 unsigned long end); 246 int (*age_hva)(struct kvm *kvm, unsigned long hva); 247 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 248 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 249 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 250 void (*free_memslot)(struct kvm_memory_slot *free, 251 struct kvm_memory_slot *dont); 252 int (*create_memslot)(struct kvm_memory_slot *slot, 253 unsigned long npages); 254 int (*init_vm)(struct kvm *kvm); 255 void (*destroy_vm)(struct kvm *kvm); 256 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 257 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 258 unsigned int inst, int *advance); 259 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 260 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 261 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 262 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 263 unsigned long arg); 264 int (*hcall_implemented)(unsigned long hcall); 265 }; 266 267 extern struct kvmppc_ops *kvmppc_hv_ops; 268 extern struct kvmppc_ops *kvmppc_pr_ops; 269 270 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 271 enum instruction_type type, u32 *inst) 272 { 273 int ret = EMULATE_DONE; 274 u32 fetched_inst; 275 276 /* Load the instruction manually if it failed to do so in the 277 * exit path */ 278 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 279 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 280 281 /* Write fetch_failed unswapped if the fetch failed */ 282 if (ret == EMULATE_DONE) 283 fetched_inst = kvmppc_need_byteswap(vcpu) ? 284 swab32(vcpu->arch.last_inst) : 285 vcpu->arch.last_inst; 286 else 287 fetched_inst = vcpu->arch.last_inst; 288 289 *inst = fetched_inst; 290 return ret; 291 } 292 293 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 294 { 295 return kvm->arch.kvm_ops == kvmppc_hv_ops; 296 } 297 298 /* 299 * Cuts out inst bits with ordering according to spec. 300 * That means the leftmost bit is zero. All given bits are included. 301 */ 302 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 303 { 304 u32 r; 305 u32 mask; 306 307 BUG_ON(msb > lsb); 308 309 mask = (1 << (lsb - msb + 1)) - 1; 310 r = (inst >> (63 - lsb)) & mask; 311 312 return r; 313 } 314 315 /* 316 * Replaces inst bits with ordering according to spec. 317 */ 318 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 319 { 320 u32 r; 321 u32 mask; 322 323 BUG_ON(msb > lsb); 324 325 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 326 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 327 328 return r; 329 } 330 331 #define one_reg_size(id) \ 332 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 333 334 #define get_reg_val(id, reg) ({ \ 335 union kvmppc_one_reg __u; \ 336 switch (one_reg_size(id)) { \ 337 case 4: __u.wval = (reg); break; \ 338 case 8: __u.dval = (reg); break; \ 339 default: BUG(); \ 340 } \ 341 __u; \ 342 }) 343 344 345 #define set_reg_val(id, val) ({ \ 346 u64 __v; \ 347 switch (one_reg_size(id)) { \ 348 case 4: __v = (val).wval; break; \ 349 case 8: __v = (val).dval; break; \ 350 default: BUG(); \ 351 } \ 352 __v; \ 353 }) 354 355 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 356 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 357 358 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 359 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 360 361 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 362 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 363 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 364 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 365 366 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 367 368 struct openpic; 369 370 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 371 extern void kvm_cma_reserve(void) __init; 372 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 373 { 374 paca[cpu].kvm_hstate.xics_phys = addr; 375 } 376 377 static inline u32 kvmppc_get_xics_latch(void) 378 { 379 u32 xirr; 380 381 xirr = get_paca()->kvm_hstate.saved_xirr; 382 get_paca()->kvm_hstate.saved_xirr = 0; 383 return xirr; 384 } 385 386 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 387 { 388 paca[cpu].kvm_hstate.host_ipi = host_ipi; 389 } 390 391 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 392 { 393 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 394 } 395 396 extern void kvm_hv_vm_activated(void); 397 extern void kvm_hv_vm_deactivated(void); 398 extern bool kvm_hv_mode_active(void); 399 400 #else 401 static inline void __init kvm_cma_reserve(void) 402 {} 403 404 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 405 {} 406 407 static inline u32 kvmppc_get_xics_latch(void) 408 { 409 return 0; 410 } 411 412 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 413 {} 414 415 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 416 { 417 kvm_vcpu_kick(vcpu); 418 } 419 420 static inline bool kvm_hv_mode_active(void) { return false; } 421 422 #endif 423 424 #ifdef CONFIG_KVM_XICS 425 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 426 { 427 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 428 } 429 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 430 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 431 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 432 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 433 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 434 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 435 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 436 struct kvm_vcpu *vcpu, u32 cpu); 437 #else 438 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 439 { return 0; } 440 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 441 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 442 unsigned long server) 443 { return -EINVAL; } 444 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 445 struct kvm_irq_level *args) 446 { return -ENOTTY; } 447 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 448 { return 0; } 449 #endif 450 451 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 452 { 453 #ifdef CONFIG_KVM_BOOKE_HV 454 return mfspr(SPRN_GEPR); 455 #elif defined(CONFIG_BOOKE) 456 return vcpu->arch.epr; 457 #else 458 return 0; 459 #endif 460 } 461 462 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 463 { 464 #ifdef CONFIG_KVM_BOOKE_HV 465 mtspr(SPRN_GEPR, epr); 466 #elif defined(CONFIG_BOOKE) 467 vcpu->arch.epr = epr; 468 #endif 469 } 470 471 #ifdef CONFIG_KVM_MPIC 472 473 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 474 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 475 u32 cpu); 476 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 477 478 #else 479 480 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 481 { 482 } 483 484 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 485 struct kvm_vcpu *vcpu, u32 cpu) 486 { 487 return -EINVAL; 488 } 489 490 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 491 struct kvm_vcpu *vcpu) 492 { 493 } 494 495 #endif /* CONFIG_KVM_MPIC */ 496 497 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 498 struct kvm_config_tlb *cfg); 499 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 500 struct kvm_dirty_tlb *cfg); 501 502 long kvmppc_alloc_lpid(void); 503 void kvmppc_claim_lpid(long lpid); 504 void kvmppc_free_lpid(long lpid); 505 void kvmppc_init_lpid(unsigned long nr_lpids); 506 507 static inline void kvmppc_mmu_flush_icache(pfn_t pfn) 508 { 509 struct page *page; 510 /* 511 * We can only access pages that the kernel maps 512 * as memory. Bail out for unmapped ones. 513 */ 514 if (!pfn_valid(pfn)) 515 return; 516 517 /* Clear i-cache for new pages */ 518 page = pfn_to_page(pfn); 519 if (!test_bit(PG_arch_1, &page->flags)) { 520 flush_dcache_icache_page(page); 521 set_bit(PG_arch_1, &page->flags); 522 } 523 } 524 525 /* 526 * Shared struct helpers. The shared struct can be little or big endian, 527 * depending on the guest endianness. So expose helpers to all of them. 528 */ 529 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 530 { 531 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 532 /* Only Book3S_64 PR supports bi-endian for now */ 533 return vcpu->arch.shared_big_endian; 534 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 535 /* Book3s_64 HV on little endian is always little endian */ 536 return false; 537 #else 538 return true; 539 #endif 540 } 541 542 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 543 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 544 { \ 545 return mfspr(bookehv_spr); \ 546 } \ 547 548 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 549 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 550 { \ 551 mtspr(bookehv_spr, val); \ 552 } \ 553 554 #define SHARED_WRAPPER_GET(reg, size) \ 555 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 556 { \ 557 if (kvmppc_shared_big_endian(vcpu)) \ 558 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 559 else \ 560 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 561 } \ 562 563 #define SHARED_WRAPPER_SET(reg, size) \ 564 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 565 { \ 566 if (kvmppc_shared_big_endian(vcpu)) \ 567 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 568 else \ 569 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 570 } \ 571 572 #define SHARED_WRAPPER(reg, size) \ 573 SHARED_WRAPPER_GET(reg, size) \ 574 SHARED_WRAPPER_SET(reg, size) \ 575 576 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 577 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 578 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 579 580 #ifdef CONFIG_KVM_BOOKE_HV 581 582 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 583 SPRNG_WRAPPER(reg, bookehv_spr) \ 584 585 #else 586 587 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 588 SHARED_WRAPPER(reg, size) \ 589 590 #endif 591 592 SHARED_WRAPPER(critical, 64) 593 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 594 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 595 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 596 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 597 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 598 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 599 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 600 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 601 SHARED_WRAPPER_GET(msr, 64) 602 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 603 { 604 if (kvmppc_shared_big_endian(vcpu)) 605 vcpu->arch.shared->msr = cpu_to_be64(val); 606 else 607 vcpu->arch.shared->msr = cpu_to_le64(val); 608 } 609 SHARED_WRAPPER(dsisr, 32) 610 SHARED_WRAPPER(int_pending, 32) 611 SHARED_WRAPPER(sprg4, 64) 612 SHARED_WRAPPER(sprg5, 64) 613 SHARED_WRAPPER(sprg6, 64) 614 SHARED_WRAPPER(sprg7, 64) 615 616 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 617 { 618 if (kvmppc_shared_big_endian(vcpu)) 619 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 620 else 621 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 622 } 623 624 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 625 { 626 if (kvmppc_shared_big_endian(vcpu)) 627 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 628 else 629 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 630 } 631 632 /* 633 * Please call after prepare_to_enter. This function puts the lazy ee and irq 634 * disabled tracking state back to normal mode, without actually enabling 635 * interrupts. 636 */ 637 static inline void kvmppc_fix_ee_before_entry(void) 638 { 639 trace_hardirqs_on(); 640 641 #ifdef CONFIG_PPC64 642 /* 643 * To avoid races, the caller must have gone directly from having 644 * interrupts fully-enabled to hard-disabled. 645 */ 646 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 647 648 /* Only need to enable IRQs by hard enabling them after this */ 649 local_paca->irq_happened = 0; 650 local_paca->soft_enabled = 1; 651 #endif 652 } 653 654 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 655 { 656 ulong ea; 657 ulong msr_64bit = 0; 658 659 ea = kvmppc_get_gpr(vcpu, rb); 660 if (ra) 661 ea += kvmppc_get_gpr(vcpu, ra); 662 663 #if defined(CONFIG_PPC_BOOK3E_64) 664 msr_64bit = MSR_CM; 665 #elif defined(CONFIG_PPC_BOOK3S_64) 666 msr_64bit = MSR_SF; 667 #endif 668 669 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 670 ea = (uint32_t)ea; 671 672 return ea; 673 } 674 675 extern void xics_wake_cpu(int cpu); 676 677 #endif /* __POWERPC_KVM_PPC_H__ */ 678