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 47enum 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 55enum instruction_type { 56 INST_GENERIC, 57 INST_SC, /* system call */ 58}; 59 60enum xlate_instdata { 61 XLATE_INST, /* translate instruction address */ 62 XLATE_DATA /* translate data address */ 63}; 64 65enum xlate_readwrite { 66 XLATE_READ, /* check for read permissions */ 67 XLATE_WRITE /* check for write permissions */ 68}; 69 70extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 71extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 72extern void kvmppc_handler_highmem(void); 73 74extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 75extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 76 unsigned int rt, unsigned int bytes, 77 int is_default_endian); 78extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 79 unsigned int rt, unsigned int bytes, 80 int is_default_endian); 81extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 82 u64 val, unsigned int bytes, 83 int is_default_endian); 84 85extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, 86 enum instruction_type type, u32 *inst); 87 88extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 89 bool data); 90extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 91 bool data); 92extern int kvmppc_emulate_instruction(struct kvm_run *run, 93 struct kvm_vcpu *vcpu); 94extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 95extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 96extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 97extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 98extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); 99extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 100extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 101extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 102 103/* Core-specific hooks */ 104 105extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 106 unsigned int gtlb_idx); 107extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 108extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 109extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 110extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 111extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 112extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 113extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 114 gva_t eaddr); 115extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 116extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 117extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 118 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 119 struct kvmppc_pte *pte); 120 121extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 122 unsigned int id); 123extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 124extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 125extern int kvmppc_core_check_processor_compat(void); 126extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 127 struct kvm_translation *tr); 128 129extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 130extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 131 132extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 133extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 134extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 135extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 136extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 137extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 138 struct kvm_interrupt *irq); 139extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 140extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 141 ulong esr_flags); 142extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 143 ulong dear_flags, 144 ulong esr_flags); 145extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 146extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 147 ulong esr_flags); 148extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 149extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 150 151extern int kvmppc_booke_init(void); 152extern void kvmppc_booke_exit(void); 153 154extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 155extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 156extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 157 158extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); 159extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); 160extern void kvmppc_free_hpt(struct kvm *kvm); 161extern long kvmppc_prepare_vrma(struct kvm *kvm, 162 struct kvm_userspace_memory_region *mem); 163extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 164 struct kvm_memory_slot *memslot, unsigned long porder); 165extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 166 167extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 168 struct kvm_create_spapr_tce *args); 169extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 170 unsigned long ioba, unsigned long tce); 171extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 172 unsigned long ioba); 173extern struct page *kvm_alloc_hpt(unsigned long nr_pages); 174extern void kvm_release_hpt(struct page *page, unsigned long nr_pages); 175extern int kvmppc_core_init_vm(struct kvm *kvm); 176extern void kvmppc_core_destroy_vm(struct kvm *kvm); 177extern void kvmppc_core_free_memslot(struct kvm *kvm, 178 struct kvm_memory_slot *free, 179 struct kvm_memory_slot *dont); 180extern int kvmppc_core_create_memslot(struct kvm *kvm, 181 struct kvm_memory_slot *slot, 182 unsigned long npages); 183extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 184 struct kvm_memory_slot *memslot, 185 struct kvm_userspace_memory_region *mem); 186extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 187 struct kvm_userspace_memory_region *mem, 188 const struct kvm_memory_slot *old); 189extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 190 struct kvm_ppc_smmu_info *info); 191extern void kvmppc_core_flush_memslot(struct kvm *kvm, 192 struct kvm_memory_slot *memslot); 193 194extern int kvmppc_bookehv_init(void); 195extern void kvmppc_bookehv_exit(void); 196 197extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 198 199extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 200 201int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 202 203extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 204extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 205extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 206extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 207 u32 priority); 208extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 209 u32 *priority); 210extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 211extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 212 213void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 214void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 215 216union 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 227struct 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 274extern struct kvmppc_ops *kvmppc_hv_ops; 275extern struct kvmppc_ops *kvmppc_pr_ops; 276 277static 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 300static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 301{ 302 return kvm->arch.kvm_ops == kvmppc_hv_ops; 303} 304 305extern int kvmppc_hwrng_present(void); 306 307/* 308 * Cuts out inst bits with ordering according to spec. 309 * That means the leftmost bit is zero. All given bits are included. 310 */ 311static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 312{ 313 u32 r; 314 u32 mask; 315 316 BUG_ON(msb > lsb); 317 318 mask = (1 << (lsb - msb + 1)) - 1; 319 r = (inst >> (63 - lsb)) & mask; 320 321 return r; 322} 323 324/* 325 * Replaces inst bits with ordering according to spec. 326 */ 327static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 328{ 329 u32 r; 330 u32 mask; 331 332 BUG_ON(msb > lsb); 333 334 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 335 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 336 337 return r; 338} 339 340#define one_reg_size(id) \ 341 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 342 343#define get_reg_val(id, reg) ({ \ 344 union kvmppc_one_reg __u; \ 345 switch (one_reg_size(id)) { \ 346 case 4: __u.wval = (reg); break; \ 347 case 8: __u.dval = (reg); break; \ 348 default: BUG(); \ 349 } \ 350 __u; \ 351}) 352 353 354#define set_reg_val(id, val) ({ \ 355 u64 __v; \ 356 switch (one_reg_size(id)) { \ 357 case 4: __v = (val).wval; break; \ 358 case 8: __v = (val).dval; break; \ 359 default: BUG(); \ 360 } \ 361 __v; \ 362}) 363 364int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 365int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 366 367int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 368int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 369 370int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 371int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 372int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 373int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 374 375void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 376 377struct openpic; 378 379#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 380extern void kvm_cma_reserve(void) __init; 381static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 382{ 383 paca[cpu].kvm_hstate.xics_phys = addr; 384} 385 386static inline u32 kvmppc_get_xics_latch(void) 387{ 388 u32 xirr; 389 390 xirr = get_paca()->kvm_hstate.saved_xirr; 391 get_paca()->kvm_hstate.saved_xirr = 0; 392 return xirr; 393} 394 395static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 396{ 397 paca[cpu].kvm_hstate.host_ipi = host_ipi; 398} 399 400static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 401{ 402 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 403} 404 405extern void kvm_hv_vm_activated(void); 406extern void kvm_hv_vm_deactivated(void); 407extern bool kvm_hv_mode_active(void); 408 409#else 410static inline void __init kvm_cma_reserve(void) 411{} 412 413static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 414{} 415 416static inline u32 kvmppc_get_xics_latch(void) 417{ 418 return 0; 419} 420 421static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 422{} 423 424static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 425{ 426 kvm_vcpu_kick(vcpu); 427} 428 429static inline bool kvm_hv_mode_active(void) { return false; } 430 431#endif 432 433#ifdef CONFIG_KVM_XICS 434static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 435{ 436 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 437} 438extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 439extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 440extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 441extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 442extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 443extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 444extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 445 struct kvm_vcpu *vcpu, u32 cpu); 446#else 447static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 448 { return 0; } 449static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 450static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 451 unsigned long server) 452 { return -EINVAL; } 453static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 454 struct kvm_irq_level *args) 455 { return -ENOTTY; } 456static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 457 { return 0; } 458#endif 459 460static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 461{ 462#ifdef CONFIG_KVM_BOOKE_HV 463 return mfspr(SPRN_GEPR); 464#elif defined(CONFIG_BOOKE) 465 return vcpu->arch.epr; 466#else 467 return 0; 468#endif 469} 470 471static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 472{ 473#ifdef CONFIG_KVM_BOOKE_HV 474 mtspr(SPRN_GEPR, epr); 475#elif defined(CONFIG_BOOKE) 476 vcpu->arch.epr = epr; 477#endif 478} 479 480#ifdef CONFIG_KVM_MPIC 481 482void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 483int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 484 u32 cpu); 485void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 486 487#else 488 489static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 490{ 491} 492 493static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 494 struct kvm_vcpu *vcpu, u32 cpu) 495{ 496 return -EINVAL; 497} 498 499static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 500 struct kvm_vcpu *vcpu) 501{ 502} 503 504#endif /* CONFIG_KVM_MPIC */ 505 506int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 507 struct kvm_config_tlb *cfg); 508int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 509 struct kvm_dirty_tlb *cfg); 510 511long kvmppc_alloc_lpid(void); 512void kvmppc_claim_lpid(long lpid); 513void kvmppc_free_lpid(long lpid); 514void kvmppc_init_lpid(unsigned long nr_lpids); 515 516static inline void kvmppc_mmu_flush_icache(pfn_t pfn) 517{ 518 struct page *page; 519 /* 520 * We can only access pages that the kernel maps 521 * as memory. Bail out for unmapped ones. 522 */ 523 if (!pfn_valid(pfn)) 524 return; 525 526 /* Clear i-cache for new pages */ 527 page = pfn_to_page(pfn); 528 if (!test_bit(PG_arch_1, &page->flags)) { 529 flush_dcache_icache_page(page); 530 set_bit(PG_arch_1, &page->flags); 531 } 532} 533 534/* 535 * Shared struct helpers. The shared struct can be little or big endian, 536 * depending on the guest endianness. So expose helpers to all of them. 537 */ 538static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 539{ 540#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 541 /* Only Book3S_64 PR supports bi-endian for now */ 542 return vcpu->arch.shared_big_endian; 543#elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 544 /* Book3s_64 HV on little endian is always little endian */ 545 return false; 546#else 547 return true; 548#endif 549} 550 551#define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 552static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 553{ \ 554 return mfspr(bookehv_spr); \ 555} \ 556 557#define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 558static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 559{ \ 560 mtspr(bookehv_spr, val); \ 561} \ 562 563#define SHARED_WRAPPER_GET(reg, size) \ 564static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 565{ \ 566 if (kvmppc_shared_big_endian(vcpu)) \ 567 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 568 else \ 569 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 570} \ 571 572#define SHARED_WRAPPER_SET(reg, size) \ 573static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 574{ \ 575 if (kvmppc_shared_big_endian(vcpu)) \ 576 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 577 else \ 578 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 579} \ 580 581#define SHARED_WRAPPER(reg, size) \ 582 SHARED_WRAPPER_GET(reg, size) \ 583 SHARED_WRAPPER_SET(reg, size) \ 584 585#define SPRNG_WRAPPER(reg, bookehv_spr) \ 586 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 587 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 588 589#ifdef CONFIG_KVM_BOOKE_HV 590 591#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 592 SPRNG_WRAPPER(reg, bookehv_spr) \ 593 594#else 595 596#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 597 SHARED_WRAPPER(reg, size) \ 598 599#endif 600 601SHARED_WRAPPER(critical, 64) 602SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 603SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 604SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 605SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 606SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 607SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 608SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 609SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 610SHARED_WRAPPER_GET(msr, 64) 611static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 612{ 613 if (kvmppc_shared_big_endian(vcpu)) 614 vcpu->arch.shared->msr = cpu_to_be64(val); 615 else 616 vcpu->arch.shared->msr = cpu_to_le64(val); 617} 618SHARED_WRAPPER(dsisr, 32) 619SHARED_WRAPPER(int_pending, 32) 620SHARED_WRAPPER(sprg4, 64) 621SHARED_WRAPPER(sprg5, 64) 622SHARED_WRAPPER(sprg6, 64) 623SHARED_WRAPPER(sprg7, 64) 624 625static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 626{ 627 if (kvmppc_shared_big_endian(vcpu)) 628 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 629 else 630 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 631} 632 633static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 634{ 635 if (kvmppc_shared_big_endian(vcpu)) 636 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 637 else 638 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 639} 640 641/* 642 * Please call after prepare_to_enter. This function puts the lazy ee and irq 643 * disabled tracking state back to normal mode, without actually enabling 644 * interrupts. 645 */ 646static inline void kvmppc_fix_ee_before_entry(void) 647{ 648 trace_hardirqs_on(); 649 650#ifdef CONFIG_PPC64 651 /* 652 * To avoid races, the caller must have gone directly from having 653 * interrupts fully-enabled to hard-disabled. 654 */ 655 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 656 657 /* Only need to enable IRQs by hard enabling them after this */ 658 local_paca->irq_happened = 0; 659 local_paca->soft_enabled = 1; 660#endif 661} 662 663static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 664{ 665 ulong ea; 666 ulong msr_64bit = 0; 667 668 ea = kvmppc_get_gpr(vcpu, rb); 669 if (ra) 670 ea += kvmppc_get_gpr(vcpu, ra); 671 672#if defined(CONFIG_PPC_BOOK3E_64) 673 msr_64bit = MSR_CM; 674#elif defined(CONFIG_PPC_BOOK3S_64) 675 msr_64bit = MSR_SF; 676#endif 677 678 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 679 ea = (uint32_t)ea; 680 681 return ea; 682} 683 684extern void xics_wake_cpu(int cpu); 685 686#endif /* __POWERPC_KVM_PPC_H__ */ 687