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 const struct kvm_userspace_memory_region *mem); 186 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 187 const struct kvm_userspace_memory_region *mem, 188 const struct kvm_memory_slot *old, 189 const struct kvm_memory_slot *new); 190 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 191 struct kvm_ppc_smmu_info *info); 192 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 193 struct kvm_memory_slot *memslot); 194 195 extern int kvmppc_bookehv_init(void); 196 extern void kvmppc_bookehv_exit(void); 197 198 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 199 200 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 201 202 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 203 204 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 205 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 206 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 207 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 208 u32 priority); 209 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 210 u32 *priority); 211 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 212 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 213 214 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 215 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 216 217 union kvmppc_one_reg { 218 u32 wval; 219 u64 dval; 220 vector128 vval; 221 u64 vsxval[2]; 222 struct { 223 u64 addr; 224 u64 length; 225 } vpaval; 226 }; 227 228 struct kvmppc_ops { 229 struct module *owner; 230 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 231 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 232 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 233 union kvmppc_one_reg *val); 234 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 235 union kvmppc_one_reg *val); 236 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 237 void (*vcpu_put)(struct kvm_vcpu *vcpu); 238 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 239 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 240 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 241 void (*vcpu_free)(struct kvm_vcpu *vcpu); 242 int (*check_requests)(struct kvm_vcpu *vcpu); 243 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 244 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 245 int (*prepare_memory_region)(struct kvm *kvm, 246 struct kvm_memory_slot *memslot, 247 const struct kvm_userspace_memory_region *mem); 248 void (*commit_memory_region)(struct kvm *kvm, 249 const struct kvm_userspace_memory_region *mem, 250 const struct kvm_memory_slot *old, 251 const struct kvm_memory_slot *new); 252 int (*unmap_hva)(struct kvm *kvm, unsigned long hva); 253 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 254 unsigned long end); 255 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 256 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 257 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 258 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 259 void (*free_memslot)(struct kvm_memory_slot *free, 260 struct kvm_memory_slot *dont); 261 int (*create_memslot)(struct kvm_memory_slot *slot, 262 unsigned long npages); 263 int (*init_vm)(struct kvm *kvm); 264 void (*destroy_vm)(struct kvm *kvm); 265 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 266 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 267 unsigned int inst, int *advance); 268 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 269 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 270 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 271 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 272 unsigned long arg); 273 int (*hcall_implemented)(unsigned long hcall); 274 }; 275 276 extern struct kvmppc_ops *kvmppc_hv_ops; 277 extern struct kvmppc_ops *kvmppc_pr_ops; 278 279 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 280 enum instruction_type type, u32 *inst) 281 { 282 int ret = EMULATE_DONE; 283 u32 fetched_inst; 284 285 /* Load the instruction manually if it failed to do so in the 286 * exit path */ 287 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 288 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 289 290 /* Write fetch_failed unswapped if the fetch failed */ 291 if (ret == EMULATE_DONE) 292 fetched_inst = kvmppc_need_byteswap(vcpu) ? 293 swab32(vcpu->arch.last_inst) : 294 vcpu->arch.last_inst; 295 else 296 fetched_inst = vcpu->arch.last_inst; 297 298 *inst = fetched_inst; 299 return ret; 300 } 301 302 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 303 { 304 return kvm->arch.kvm_ops == kvmppc_hv_ops; 305 } 306 307 extern int kvmppc_hwrng_present(void); 308 309 /* 310 * Cuts out inst bits with ordering according to spec. 311 * That means the leftmost bit is zero. All given bits are included. 312 */ 313 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 314 { 315 u32 r; 316 u32 mask; 317 318 BUG_ON(msb > lsb); 319 320 mask = (1 << (lsb - msb + 1)) - 1; 321 r = (inst >> (63 - lsb)) & mask; 322 323 return r; 324 } 325 326 /* 327 * Replaces inst bits with ordering according to spec. 328 */ 329 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 330 { 331 u32 r; 332 u32 mask; 333 334 BUG_ON(msb > lsb); 335 336 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 337 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 338 339 return r; 340 } 341 342 #define one_reg_size(id) \ 343 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 344 345 #define get_reg_val(id, reg) ({ \ 346 union kvmppc_one_reg __u; \ 347 switch (one_reg_size(id)) { \ 348 case 4: __u.wval = (reg); break; \ 349 case 8: __u.dval = (reg); break; \ 350 default: BUG(); \ 351 } \ 352 __u; \ 353 }) 354 355 356 #define set_reg_val(id, val) ({ \ 357 u64 __v; \ 358 switch (one_reg_size(id)) { \ 359 case 4: __v = (val).wval; break; \ 360 case 8: __v = (val).dval; break; \ 361 default: BUG(); \ 362 } \ 363 __v; \ 364 }) 365 366 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 367 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 368 369 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 370 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 371 372 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 373 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 374 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 375 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 376 377 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 378 379 struct openpic; 380 381 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 382 extern void kvm_cma_reserve(void) __init; 383 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 384 { 385 paca[cpu].kvm_hstate.xics_phys = addr; 386 } 387 388 static inline u32 kvmppc_get_xics_latch(void) 389 { 390 u32 xirr; 391 392 xirr = get_paca()->kvm_hstate.saved_xirr; 393 get_paca()->kvm_hstate.saved_xirr = 0; 394 return xirr; 395 } 396 397 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 398 { 399 paca[cpu].kvm_hstate.host_ipi = host_ipi; 400 } 401 402 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 403 { 404 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 405 } 406 407 extern void kvm_hv_vm_activated(void); 408 extern void kvm_hv_vm_deactivated(void); 409 extern bool kvm_hv_mode_active(void); 410 411 #else 412 static inline void __init kvm_cma_reserve(void) 413 {} 414 415 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 416 {} 417 418 static inline u32 kvmppc_get_xics_latch(void) 419 { 420 return 0; 421 } 422 423 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 424 {} 425 426 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 427 { 428 kvm_vcpu_kick(vcpu); 429 } 430 431 static inline bool kvm_hv_mode_active(void) { return false; } 432 433 #endif 434 435 #ifdef CONFIG_KVM_XICS 436 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 437 { 438 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 439 } 440 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 441 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 442 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 443 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 444 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 445 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 446 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 447 struct kvm_vcpu *vcpu, u32 cpu); 448 #else 449 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 450 { return 0; } 451 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 452 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 453 unsigned long server) 454 { return -EINVAL; } 455 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 456 struct kvm_irq_level *args) 457 { return -ENOTTY; } 458 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 459 { return 0; } 460 #endif 461 462 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 463 { 464 #ifdef CONFIG_KVM_BOOKE_HV 465 return mfspr(SPRN_GEPR); 466 #elif defined(CONFIG_BOOKE) 467 return vcpu->arch.epr; 468 #else 469 return 0; 470 #endif 471 } 472 473 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 474 { 475 #ifdef CONFIG_KVM_BOOKE_HV 476 mtspr(SPRN_GEPR, epr); 477 #elif defined(CONFIG_BOOKE) 478 vcpu->arch.epr = epr; 479 #endif 480 } 481 482 #ifdef CONFIG_KVM_MPIC 483 484 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 485 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 486 u32 cpu); 487 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 488 489 #else 490 491 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 492 { 493 } 494 495 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 496 struct kvm_vcpu *vcpu, u32 cpu) 497 { 498 return -EINVAL; 499 } 500 501 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 502 struct kvm_vcpu *vcpu) 503 { 504 } 505 506 #endif /* CONFIG_KVM_MPIC */ 507 508 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 509 struct kvm_config_tlb *cfg); 510 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 511 struct kvm_dirty_tlb *cfg); 512 513 long kvmppc_alloc_lpid(void); 514 void kvmppc_claim_lpid(long lpid); 515 void kvmppc_free_lpid(long lpid); 516 void kvmppc_init_lpid(unsigned long nr_lpids); 517 518 static inline void kvmppc_mmu_flush_icache(pfn_t pfn) 519 { 520 struct page *page; 521 /* 522 * We can only access pages that the kernel maps 523 * as memory. Bail out for unmapped ones. 524 */ 525 if (!pfn_valid(pfn)) 526 return; 527 528 /* Clear i-cache for new pages */ 529 page = pfn_to_page(pfn); 530 if (!test_bit(PG_arch_1, &page->flags)) { 531 flush_dcache_icache_page(page); 532 set_bit(PG_arch_1, &page->flags); 533 } 534 } 535 536 /* 537 * Shared struct helpers. The shared struct can be little or big endian, 538 * depending on the guest endianness. So expose helpers to all of them. 539 */ 540 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 541 { 542 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 543 /* Only Book3S_64 PR supports bi-endian for now */ 544 return vcpu->arch.shared_big_endian; 545 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 546 /* Book3s_64 HV on little endian is always little endian */ 547 return false; 548 #else 549 return true; 550 #endif 551 } 552 553 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 554 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 555 { \ 556 return mfspr(bookehv_spr); \ 557 } \ 558 559 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 560 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 561 { \ 562 mtspr(bookehv_spr, val); \ 563 } \ 564 565 #define SHARED_WRAPPER_GET(reg, size) \ 566 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 567 { \ 568 if (kvmppc_shared_big_endian(vcpu)) \ 569 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 570 else \ 571 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 572 } \ 573 574 #define SHARED_WRAPPER_SET(reg, size) \ 575 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 576 { \ 577 if (kvmppc_shared_big_endian(vcpu)) \ 578 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 579 else \ 580 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 581 } \ 582 583 #define SHARED_WRAPPER(reg, size) \ 584 SHARED_WRAPPER_GET(reg, size) \ 585 SHARED_WRAPPER_SET(reg, size) \ 586 587 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 588 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 589 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 590 591 #ifdef CONFIG_KVM_BOOKE_HV 592 593 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 594 SPRNG_WRAPPER(reg, bookehv_spr) \ 595 596 #else 597 598 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 599 SHARED_WRAPPER(reg, size) \ 600 601 #endif 602 603 SHARED_WRAPPER(critical, 64) 604 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 605 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 606 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 607 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 608 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 609 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 610 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 611 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 612 SHARED_WRAPPER_GET(msr, 64) 613 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 614 { 615 if (kvmppc_shared_big_endian(vcpu)) 616 vcpu->arch.shared->msr = cpu_to_be64(val); 617 else 618 vcpu->arch.shared->msr = cpu_to_le64(val); 619 } 620 SHARED_WRAPPER(dsisr, 32) 621 SHARED_WRAPPER(int_pending, 32) 622 SHARED_WRAPPER(sprg4, 64) 623 SHARED_WRAPPER(sprg5, 64) 624 SHARED_WRAPPER(sprg6, 64) 625 SHARED_WRAPPER(sprg7, 64) 626 627 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 628 { 629 if (kvmppc_shared_big_endian(vcpu)) 630 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 631 else 632 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 633 } 634 635 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 636 { 637 if (kvmppc_shared_big_endian(vcpu)) 638 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 639 else 640 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 641 } 642 643 /* 644 * Please call after prepare_to_enter. This function puts the lazy ee and irq 645 * disabled tracking state back to normal mode, without actually enabling 646 * interrupts. 647 */ 648 static inline void kvmppc_fix_ee_before_entry(void) 649 { 650 trace_hardirqs_on(); 651 652 #ifdef CONFIG_PPC64 653 /* 654 * To avoid races, the caller must have gone directly from having 655 * interrupts fully-enabled to hard-disabled. 656 */ 657 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 658 659 /* Only need to enable IRQs by hard enabling them after this */ 660 local_paca->irq_happened = 0; 661 local_paca->soft_enabled = 1; 662 #endif 663 } 664 665 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 666 { 667 ulong ea; 668 ulong msr_64bit = 0; 669 670 ea = kvmppc_get_gpr(vcpu, rb); 671 if (ra) 672 ea += kvmppc_get_gpr(vcpu, ra); 673 674 #if defined(CONFIG_PPC_BOOK3E_64) 675 msr_64bit = MSR_CM; 676 #elif defined(CONFIG_PPC_BOOK3S_64) 677 msr_64bit = MSR_SF; 678 #endif 679 680 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 681 ea = (uint32_t)ea; 682 683 return ea; 684 } 685 686 extern void xics_wake_cpu(int cpu); 687 688 #endif /* __POWERPC_KVM_PPC_H__ */ 689