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 /* 42 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction 43 * for supporting software breakpoint. 44 */ 45 #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00 46 47 enum emulation_result { 48 EMULATE_DONE, /* no further processing */ 49 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 50 EMULATE_FAIL, /* can't emulate this instruction */ 51 EMULATE_AGAIN, /* something went wrong. go again */ 52 EMULATE_EXIT_USER, /* emulation requires exit to user-space */ 53 }; 54 55 enum instruction_type { 56 INST_GENERIC, 57 INST_SC, /* system call */ 58 }; 59 60 enum xlate_instdata { 61 XLATE_INST, /* translate instruction address */ 62 XLATE_DATA /* translate data address */ 63 }; 64 65 enum xlate_readwrite { 66 XLATE_READ, /* check for read permissions */ 67 XLATE_WRITE /* check for write permissions */ 68 }; 69 70 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 71 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 72 extern void kvmppc_handler_highmem(void); 73 74 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 75 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 76 unsigned int rt, unsigned int bytes, 77 int is_default_endian); 78 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 79 unsigned int rt, unsigned int bytes, 80 int is_default_endian); 81 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 82 u64 val, unsigned int bytes, 83 int is_default_endian); 84 85 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, 86 enum instruction_type type, u32 *inst); 87 88 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 89 bool data); 90 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 91 bool data); 92 extern int kvmppc_emulate_instruction(struct kvm_run *run, 93 struct kvm_vcpu *vcpu); 94 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 95 extern int kvmppc_emulate_mmio(struct kvm_run *run, 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 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 110 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 111 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 112 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 113 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 114 gva_t eaddr); 115 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 116 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 117 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 118 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 119 struct kvmppc_pte *pte); 120 121 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 122 unsigned int id); 123 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 124 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 125 extern int kvmppc_core_check_processor_compat(void); 126 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 127 struct kvm_translation *tr); 128 129 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 130 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 131 132 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 133 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 134 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 135 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 136 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 137 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 138 struct kvm_interrupt *irq); 139 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 140 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 141 ulong esr_flags); 142 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 143 ulong dear_flags, 144 ulong esr_flags); 145 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 146 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 147 ulong esr_flags); 148 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 149 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 150 151 extern int kvmppc_booke_init(void); 152 extern void kvmppc_booke_exit(void); 153 154 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 155 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 156 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 157 158 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); 159 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); 160 extern void kvmppc_free_hpt(struct kvm *kvm); 161 extern long kvmppc_prepare_vrma(struct kvm *kvm, 162 struct kvm_userspace_memory_region *mem); 163 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 164 struct kvm_memory_slot *memslot, unsigned long porder); 165 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 166 167 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 168 struct kvm_create_spapr_tce *args); 169 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 170 unsigned long ioba, unsigned long tce); 171 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 172 unsigned long ioba); 173 extern struct page *kvm_alloc_hpt(unsigned long nr_pages); 174 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages); 175 extern int kvmppc_core_init_vm(struct kvm *kvm); 176 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 177 extern void kvmppc_core_free_memslot(struct kvm *kvm, 178 struct kvm_memory_slot *free, 179 struct kvm_memory_slot *dont); 180 extern int kvmppc_core_create_memslot(struct kvm *kvm, 181 struct kvm_memory_slot *slot, 182 unsigned long npages); 183 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 184 struct kvm_memory_slot *memslot, 185 struct kvm_userspace_memory_region *mem); 186 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 187 struct kvm_userspace_memory_region *mem, 188 const struct kvm_memory_slot *old); 189 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 190 struct kvm_ppc_smmu_info *info); 191 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 192 struct kvm_memory_slot *memslot); 193 194 extern int kvmppc_bookehv_init(void); 195 extern void kvmppc_bookehv_exit(void); 196 197 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 198 199 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 200 201 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 202 203 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 204 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 205 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 206 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 207 u32 priority); 208 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 209 u32 *priority); 210 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 211 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 212 213 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 214 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 215 216 union kvmppc_one_reg { 217 u32 wval; 218 u64 dval; 219 vector128 vval; 220 u64 vsxval[2]; 221 struct { 222 u64 addr; 223 u64 length; 224 } vpaval; 225 }; 226 227 struct kvmppc_ops { 228 struct module *owner; 229 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 230 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 231 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 232 union kvmppc_one_reg *val); 233 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 234 union kvmppc_one_reg *val); 235 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 236 void (*vcpu_put)(struct kvm_vcpu *vcpu); 237 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 238 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 239 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 240 void (*vcpu_free)(struct kvm_vcpu *vcpu); 241 int (*check_requests)(struct kvm_vcpu *vcpu); 242 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 243 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 244 int (*prepare_memory_region)(struct kvm *kvm, 245 struct kvm_memory_slot *memslot, 246 struct kvm_userspace_memory_region *mem); 247 void (*commit_memory_region)(struct kvm *kvm, 248 struct kvm_userspace_memory_region *mem, 249 const struct kvm_memory_slot *old); 250 int (*unmap_hva)(struct kvm *kvm, unsigned long hva); 251 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 252 unsigned long end); 253 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 254 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 255 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 256 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 257 void (*free_memslot)(struct kvm_memory_slot *free, 258 struct kvm_memory_slot *dont); 259 int (*create_memslot)(struct kvm_memory_slot *slot, 260 unsigned long npages); 261 int (*init_vm)(struct kvm *kvm); 262 void (*destroy_vm)(struct kvm *kvm); 263 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 264 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 265 unsigned int inst, int *advance); 266 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 267 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 268 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 269 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 270 unsigned long arg); 271 int (*hcall_implemented)(unsigned long hcall); 272 }; 273 274 extern struct kvmppc_ops *kvmppc_hv_ops; 275 extern struct kvmppc_ops *kvmppc_pr_ops; 276 277 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 278 enum instruction_type type, u32 *inst) 279 { 280 int ret = EMULATE_DONE; 281 u32 fetched_inst; 282 283 /* Load the instruction manually if it failed to do so in the 284 * exit path */ 285 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 286 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 287 288 /* Write fetch_failed unswapped if the fetch failed */ 289 if (ret == EMULATE_DONE) 290 fetched_inst = kvmppc_need_byteswap(vcpu) ? 291 swab32(vcpu->arch.last_inst) : 292 vcpu->arch.last_inst; 293 else 294 fetched_inst = vcpu->arch.last_inst; 295 296 *inst = fetched_inst; 297 return ret; 298 } 299 300 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 301 { 302 return kvm->arch.kvm_ops == kvmppc_hv_ops; 303 } 304 305 /* 306 * Cuts out inst bits with ordering according to spec. 307 * That means the leftmost bit is zero. All given bits are included. 308 */ 309 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 310 { 311 u32 r; 312 u32 mask; 313 314 BUG_ON(msb > lsb); 315 316 mask = (1 << (lsb - msb + 1)) - 1; 317 r = (inst >> (63 - lsb)) & mask; 318 319 return r; 320 } 321 322 /* 323 * Replaces inst bits with ordering according to spec. 324 */ 325 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 326 { 327 u32 r; 328 u32 mask; 329 330 BUG_ON(msb > lsb); 331 332 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 333 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 334 335 return r; 336 } 337 338 #define one_reg_size(id) \ 339 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 340 341 #define get_reg_val(id, reg) ({ \ 342 union kvmppc_one_reg __u; \ 343 switch (one_reg_size(id)) { \ 344 case 4: __u.wval = (reg); break; \ 345 case 8: __u.dval = (reg); break; \ 346 default: BUG(); \ 347 } \ 348 __u; \ 349 }) 350 351 352 #define set_reg_val(id, val) ({ \ 353 u64 __v; \ 354 switch (one_reg_size(id)) { \ 355 case 4: __v = (val).wval; break; \ 356 case 8: __v = (val).dval; break; \ 357 default: BUG(); \ 358 } \ 359 __v; \ 360 }) 361 362 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 363 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 364 365 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 366 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 367 368 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 369 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 370 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 371 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 372 373 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 374 375 struct openpic; 376 377 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 378 extern void kvm_cma_reserve(void) __init; 379 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 380 { 381 paca[cpu].kvm_hstate.xics_phys = addr; 382 } 383 384 static inline u32 kvmppc_get_xics_latch(void) 385 { 386 u32 xirr; 387 388 xirr = get_paca()->kvm_hstate.saved_xirr; 389 get_paca()->kvm_hstate.saved_xirr = 0; 390 return xirr; 391 } 392 393 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 394 { 395 paca[cpu].kvm_hstate.host_ipi = host_ipi; 396 } 397 398 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 399 { 400 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 401 } 402 403 extern void kvm_hv_vm_activated(void); 404 extern void kvm_hv_vm_deactivated(void); 405 extern bool kvm_hv_mode_active(void); 406 407 #else 408 static inline void __init kvm_cma_reserve(void) 409 {} 410 411 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 412 {} 413 414 static inline u32 kvmppc_get_xics_latch(void) 415 { 416 return 0; 417 } 418 419 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 420 {} 421 422 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 423 { 424 kvm_vcpu_kick(vcpu); 425 } 426 427 static inline bool kvm_hv_mode_active(void) { return false; } 428 429 #endif 430 431 #ifdef CONFIG_KVM_XICS 432 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 433 { 434 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 435 } 436 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 437 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 438 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 439 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 440 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 441 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 442 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 443 struct kvm_vcpu *vcpu, u32 cpu); 444 #else 445 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 446 { return 0; } 447 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 448 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 449 unsigned long server) 450 { return -EINVAL; } 451 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 452 struct kvm_irq_level *args) 453 { return -ENOTTY; } 454 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 455 { return 0; } 456 #endif 457 458 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 459 { 460 #ifdef CONFIG_KVM_BOOKE_HV 461 return mfspr(SPRN_GEPR); 462 #elif defined(CONFIG_BOOKE) 463 return vcpu->arch.epr; 464 #else 465 return 0; 466 #endif 467 } 468 469 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 470 { 471 #ifdef CONFIG_KVM_BOOKE_HV 472 mtspr(SPRN_GEPR, epr); 473 #elif defined(CONFIG_BOOKE) 474 vcpu->arch.epr = epr; 475 #endif 476 } 477 478 #ifdef CONFIG_KVM_MPIC 479 480 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 481 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 482 u32 cpu); 483 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 484 485 #else 486 487 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 488 { 489 } 490 491 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 492 struct kvm_vcpu *vcpu, u32 cpu) 493 { 494 return -EINVAL; 495 } 496 497 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 498 struct kvm_vcpu *vcpu) 499 { 500 } 501 502 #endif /* CONFIG_KVM_MPIC */ 503 504 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 505 struct kvm_config_tlb *cfg); 506 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 507 struct kvm_dirty_tlb *cfg); 508 509 long kvmppc_alloc_lpid(void); 510 void kvmppc_claim_lpid(long lpid); 511 void kvmppc_free_lpid(long lpid); 512 void kvmppc_init_lpid(unsigned long nr_lpids); 513 514 static inline void kvmppc_mmu_flush_icache(pfn_t pfn) 515 { 516 struct page *page; 517 /* 518 * We can only access pages that the kernel maps 519 * as memory. Bail out for unmapped ones. 520 */ 521 if (!pfn_valid(pfn)) 522 return; 523 524 /* Clear i-cache for new pages */ 525 page = pfn_to_page(pfn); 526 if (!test_bit(PG_arch_1, &page->flags)) { 527 flush_dcache_icache_page(page); 528 set_bit(PG_arch_1, &page->flags); 529 } 530 } 531 532 /* 533 * Shared struct helpers. The shared struct can be little or big endian, 534 * depending on the guest endianness. So expose helpers to all of them. 535 */ 536 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 537 { 538 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 539 /* Only Book3S_64 PR supports bi-endian for now */ 540 return vcpu->arch.shared_big_endian; 541 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 542 /* Book3s_64 HV on little endian is always little endian */ 543 return false; 544 #else 545 return true; 546 #endif 547 } 548 549 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 550 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 551 { \ 552 return mfspr(bookehv_spr); \ 553 } \ 554 555 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 556 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 557 { \ 558 mtspr(bookehv_spr, val); \ 559 } \ 560 561 #define SHARED_WRAPPER_GET(reg, size) \ 562 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 563 { \ 564 if (kvmppc_shared_big_endian(vcpu)) \ 565 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 566 else \ 567 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 568 } \ 569 570 #define SHARED_WRAPPER_SET(reg, size) \ 571 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 572 { \ 573 if (kvmppc_shared_big_endian(vcpu)) \ 574 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 575 else \ 576 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 577 } \ 578 579 #define SHARED_WRAPPER(reg, size) \ 580 SHARED_WRAPPER_GET(reg, size) \ 581 SHARED_WRAPPER_SET(reg, size) \ 582 583 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 584 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 585 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 586 587 #ifdef CONFIG_KVM_BOOKE_HV 588 589 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 590 SPRNG_WRAPPER(reg, bookehv_spr) \ 591 592 #else 593 594 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 595 SHARED_WRAPPER(reg, size) \ 596 597 #endif 598 599 SHARED_WRAPPER(critical, 64) 600 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 601 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 602 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 603 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 604 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 605 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 606 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 607 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 608 SHARED_WRAPPER_GET(msr, 64) 609 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 610 { 611 if (kvmppc_shared_big_endian(vcpu)) 612 vcpu->arch.shared->msr = cpu_to_be64(val); 613 else 614 vcpu->arch.shared->msr = cpu_to_le64(val); 615 } 616 SHARED_WRAPPER(dsisr, 32) 617 SHARED_WRAPPER(int_pending, 32) 618 SHARED_WRAPPER(sprg4, 64) 619 SHARED_WRAPPER(sprg5, 64) 620 SHARED_WRAPPER(sprg6, 64) 621 SHARED_WRAPPER(sprg7, 64) 622 623 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 624 { 625 if (kvmppc_shared_big_endian(vcpu)) 626 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 627 else 628 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 629 } 630 631 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 632 { 633 if (kvmppc_shared_big_endian(vcpu)) 634 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 635 else 636 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 637 } 638 639 /* 640 * Please call after prepare_to_enter. This function puts the lazy ee and irq 641 * disabled tracking state back to normal mode, without actually enabling 642 * interrupts. 643 */ 644 static inline void kvmppc_fix_ee_before_entry(void) 645 { 646 trace_hardirqs_on(); 647 648 #ifdef CONFIG_PPC64 649 /* 650 * To avoid races, the caller must have gone directly from having 651 * interrupts fully-enabled to hard-disabled. 652 */ 653 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 654 655 /* Only need to enable IRQs by hard enabling them after this */ 656 local_paca->irq_happened = 0; 657 local_paca->soft_enabled = 1; 658 #endif 659 } 660 661 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 662 { 663 ulong ea; 664 ulong msr_64bit = 0; 665 666 ea = kvmppc_get_gpr(vcpu, rb); 667 if (ra) 668 ea += kvmppc_get_gpr(vcpu, ra); 669 670 #if defined(CONFIG_PPC_BOOK3E_64) 671 msr_64bit = MSR_CM; 672 #elif defined(CONFIG_PPC_BOOK3S_64) 673 msr_64bit = MSR_SF; 674 #endif 675 676 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 677 ea = (uint32_t)ea; 678 679 return ea; 680 } 681 682 extern void xics_wake_cpu(int cpu); 683 684 #endif /* __POWERPC_KVM_PPC_H__ */ 685