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_64 *args); 169 extern struct kvmppc_spapr_tce_table *kvmppc_find_table( 170 struct kvm_vcpu *vcpu, unsigned long liobn); 171 extern long kvmppc_ioba_validate(struct kvmppc_spapr_tce_table *stt, 172 unsigned long ioba, unsigned long npages); 173 extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt, 174 unsigned long tce); 175 extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa, 176 unsigned long *ua, unsigned long **prmap); 177 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt, 178 unsigned long idx, unsigned long tce); 179 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 180 unsigned long ioba, unsigned long tce); 181 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 182 unsigned long liobn, unsigned long ioba, 183 unsigned long tce_list, unsigned long npages); 184 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 185 unsigned long liobn, unsigned long ioba, 186 unsigned long tce_value, unsigned long npages); 187 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 188 unsigned long ioba); 189 extern struct page *kvm_alloc_hpt(unsigned long nr_pages); 190 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages); 191 extern int kvmppc_core_init_vm(struct kvm *kvm); 192 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 193 extern void kvmppc_core_free_memslot(struct kvm *kvm, 194 struct kvm_memory_slot *free, 195 struct kvm_memory_slot *dont); 196 extern int kvmppc_core_create_memslot(struct kvm *kvm, 197 struct kvm_memory_slot *slot, 198 unsigned long npages); 199 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 200 struct kvm_memory_slot *memslot, 201 const struct kvm_userspace_memory_region *mem); 202 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 203 const struct kvm_userspace_memory_region *mem, 204 const struct kvm_memory_slot *old, 205 const struct kvm_memory_slot *new); 206 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 207 struct kvm_ppc_smmu_info *info); 208 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 209 struct kvm_memory_slot *memslot); 210 211 extern int kvmppc_bookehv_init(void); 212 extern void kvmppc_bookehv_exit(void); 213 214 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 215 216 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 217 218 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 219 220 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 221 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 222 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 223 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 224 u32 priority); 225 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 226 u32 *priority); 227 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 228 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 229 230 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 231 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 232 233 union kvmppc_one_reg { 234 u32 wval; 235 u64 dval; 236 vector128 vval; 237 u64 vsxval[2]; 238 struct { 239 u64 addr; 240 u64 length; 241 } vpaval; 242 }; 243 244 struct kvmppc_ops { 245 struct module *owner; 246 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 247 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 248 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 249 union kvmppc_one_reg *val); 250 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 251 union kvmppc_one_reg *val); 252 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 253 void (*vcpu_put)(struct kvm_vcpu *vcpu); 254 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 255 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 256 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 257 void (*vcpu_free)(struct kvm_vcpu *vcpu); 258 int (*check_requests)(struct kvm_vcpu *vcpu); 259 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 260 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 261 int (*prepare_memory_region)(struct kvm *kvm, 262 struct kvm_memory_slot *memslot, 263 const struct kvm_userspace_memory_region *mem); 264 void (*commit_memory_region)(struct kvm *kvm, 265 const struct kvm_userspace_memory_region *mem, 266 const struct kvm_memory_slot *old, 267 const struct kvm_memory_slot *new); 268 int (*unmap_hva)(struct kvm *kvm, unsigned long hva); 269 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 270 unsigned long end); 271 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 272 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 273 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 274 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 275 void (*free_memslot)(struct kvm_memory_slot *free, 276 struct kvm_memory_slot *dont); 277 int (*create_memslot)(struct kvm_memory_slot *slot, 278 unsigned long npages); 279 int (*init_vm)(struct kvm *kvm); 280 void (*destroy_vm)(struct kvm *kvm); 281 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 282 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 283 unsigned int inst, int *advance); 284 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 285 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 286 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 287 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 288 unsigned long arg); 289 int (*hcall_implemented)(unsigned long hcall); 290 }; 291 292 extern struct kvmppc_ops *kvmppc_hv_ops; 293 extern struct kvmppc_ops *kvmppc_pr_ops; 294 295 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 296 enum instruction_type type, u32 *inst) 297 { 298 int ret = EMULATE_DONE; 299 u32 fetched_inst; 300 301 /* Load the instruction manually if it failed to do so in the 302 * exit path */ 303 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 304 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 305 306 /* Write fetch_failed unswapped if the fetch failed */ 307 if (ret == EMULATE_DONE) 308 fetched_inst = kvmppc_need_byteswap(vcpu) ? 309 swab32(vcpu->arch.last_inst) : 310 vcpu->arch.last_inst; 311 else 312 fetched_inst = vcpu->arch.last_inst; 313 314 *inst = fetched_inst; 315 return ret; 316 } 317 318 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 319 { 320 return kvm->arch.kvm_ops == kvmppc_hv_ops; 321 } 322 323 extern int kvmppc_hwrng_present(void); 324 325 /* 326 * Cuts out inst bits with ordering according to spec. 327 * That means the leftmost bit is zero. All given bits are included. 328 */ 329 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 330 { 331 u32 r; 332 u32 mask; 333 334 BUG_ON(msb > lsb); 335 336 mask = (1 << (lsb - msb + 1)) - 1; 337 r = (inst >> (63 - lsb)) & mask; 338 339 return r; 340 } 341 342 /* 343 * Replaces inst bits with ordering according to spec. 344 */ 345 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 346 { 347 u32 r; 348 u32 mask; 349 350 BUG_ON(msb > lsb); 351 352 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 353 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 354 355 return r; 356 } 357 358 #define one_reg_size(id) \ 359 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 360 361 #define get_reg_val(id, reg) ({ \ 362 union kvmppc_one_reg __u; \ 363 switch (one_reg_size(id)) { \ 364 case 4: __u.wval = (reg); break; \ 365 case 8: __u.dval = (reg); break; \ 366 default: BUG(); \ 367 } \ 368 __u; \ 369 }) 370 371 372 #define set_reg_val(id, val) ({ \ 373 u64 __v; \ 374 switch (one_reg_size(id)) { \ 375 case 4: __v = (val).wval; break; \ 376 case 8: __v = (val).dval; break; \ 377 default: BUG(); \ 378 } \ 379 __v; \ 380 }) 381 382 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 383 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 384 385 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 386 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 387 388 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 389 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 390 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 391 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 392 393 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 394 395 struct openpic; 396 397 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 398 extern void kvm_cma_reserve(void) __init; 399 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 400 { 401 paca[cpu].kvm_hstate.xics_phys = addr; 402 } 403 404 static inline u32 kvmppc_get_xics_latch(void) 405 { 406 u32 xirr; 407 408 xirr = get_paca()->kvm_hstate.saved_xirr; 409 get_paca()->kvm_hstate.saved_xirr = 0; 410 return xirr; 411 } 412 413 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 414 { 415 paca[cpu].kvm_hstate.host_ipi = host_ipi; 416 } 417 418 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 419 { 420 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 421 } 422 423 extern void kvm_hv_vm_activated(void); 424 extern void kvm_hv_vm_deactivated(void); 425 extern bool kvm_hv_mode_active(void); 426 427 #else 428 static inline void __init kvm_cma_reserve(void) 429 {} 430 431 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 432 {} 433 434 static inline u32 kvmppc_get_xics_latch(void) 435 { 436 return 0; 437 } 438 439 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 440 {} 441 442 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 443 { 444 kvm_vcpu_kick(vcpu); 445 } 446 447 static inline bool kvm_hv_mode_active(void) { return false; } 448 449 #endif 450 451 #ifdef CONFIG_KVM_XICS 452 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 453 { 454 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 455 } 456 extern void kvmppc_alloc_host_rm_ops(void); 457 extern void kvmppc_free_host_rm_ops(void); 458 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 459 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 460 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 461 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 462 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 463 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 464 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 465 struct kvm_vcpu *vcpu, u32 cpu); 466 extern void kvmppc_xics_ipi_action(void); 467 extern int h_ipi_redirect; 468 #else 469 static inline void kvmppc_alloc_host_rm_ops(void) {}; 470 static inline void kvmppc_free_host_rm_ops(void) {}; 471 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 472 { return 0; } 473 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 474 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 475 unsigned long server) 476 { return -EINVAL; } 477 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 478 struct kvm_irq_level *args) 479 { return -ENOTTY; } 480 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 481 { return 0; } 482 #endif 483 484 /* 485 * Host-side operations we want to set up while running in real 486 * mode in the guest operating on the xics. 487 * Currently only VCPU wakeup is supported. 488 */ 489 490 union kvmppc_rm_state { 491 unsigned long raw; 492 struct { 493 u32 in_host; 494 u32 rm_action; 495 }; 496 }; 497 498 struct kvmppc_host_rm_core { 499 union kvmppc_rm_state rm_state; 500 void *rm_data; 501 char pad[112]; 502 }; 503 504 struct kvmppc_host_rm_ops { 505 struct kvmppc_host_rm_core *rm_core; 506 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 507 }; 508 509 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 510 511 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 512 { 513 #ifdef CONFIG_KVM_BOOKE_HV 514 return mfspr(SPRN_GEPR); 515 #elif defined(CONFIG_BOOKE) 516 return vcpu->arch.epr; 517 #else 518 return 0; 519 #endif 520 } 521 522 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 523 { 524 #ifdef CONFIG_KVM_BOOKE_HV 525 mtspr(SPRN_GEPR, epr); 526 #elif defined(CONFIG_BOOKE) 527 vcpu->arch.epr = epr; 528 #endif 529 } 530 531 #ifdef CONFIG_KVM_MPIC 532 533 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 534 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 535 u32 cpu); 536 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 537 538 #else 539 540 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 541 { 542 } 543 544 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 545 struct kvm_vcpu *vcpu, u32 cpu) 546 { 547 return -EINVAL; 548 } 549 550 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 551 struct kvm_vcpu *vcpu) 552 { 553 } 554 555 #endif /* CONFIG_KVM_MPIC */ 556 557 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 558 struct kvm_config_tlb *cfg); 559 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 560 struct kvm_dirty_tlb *cfg); 561 562 long kvmppc_alloc_lpid(void); 563 void kvmppc_claim_lpid(long lpid); 564 void kvmppc_free_lpid(long lpid); 565 void kvmppc_init_lpid(unsigned long nr_lpids); 566 567 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 568 { 569 struct page *page; 570 /* 571 * We can only access pages that the kernel maps 572 * as memory. Bail out for unmapped ones. 573 */ 574 if (!pfn_valid(pfn)) 575 return; 576 577 /* Clear i-cache for new pages */ 578 page = pfn_to_page(pfn); 579 if (!test_bit(PG_arch_1, &page->flags)) { 580 flush_dcache_icache_page(page); 581 set_bit(PG_arch_1, &page->flags); 582 } 583 } 584 585 /* 586 * Shared struct helpers. The shared struct can be little or big endian, 587 * depending on the guest endianness. So expose helpers to all of them. 588 */ 589 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 590 { 591 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 592 /* Only Book3S_64 PR supports bi-endian for now */ 593 return vcpu->arch.shared_big_endian; 594 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 595 /* Book3s_64 HV on little endian is always little endian */ 596 return false; 597 #else 598 return true; 599 #endif 600 } 601 602 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 603 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 604 { \ 605 return mfspr(bookehv_spr); \ 606 } \ 607 608 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 609 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 610 { \ 611 mtspr(bookehv_spr, val); \ 612 } \ 613 614 #define SHARED_WRAPPER_GET(reg, size) \ 615 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 616 { \ 617 if (kvmppc_shared_big_endian(vcpu)) \ 618 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 619 else \ 620 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 621 } \ 622 623 #define SHARED_WRAPPER_SET(reg, size) \ 624 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 625 { \ 626 if (kvmppc_shared_big_endian(vcpu)) \ 627 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 628 else \ 629 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 630 } \ 631 632 #define SHARED_WRAPPER(reg, size) \ 633 SHARED_WRAPPER_GET(reg, size) \ 634 SHARED_WRAPPER_SET(reg, size) \ 635 636 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 637 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 638 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 639 640 #ifdef CONFIG_KVM_BOOKE_HV 641 642 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 643 SPRNG_WRAPPER(reg, bookehv_spr) \ 644 645 #else 646 647 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 648 SHARED_WRAPPER(reg, size) \ 649 650 #endif 651 652 SHARED_WRAPPER(critical, 64) 653 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 654 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 655 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 656 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 657 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 658 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 659 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 660 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 661 SHARED_WRAPPER_GET(msr, 64) 662 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 663 { 664 if (kvmppc_shared_big_endian(vcpu)) 665 vcpu->arch.shared->msr = cpu_to_be64(val); 666 else 667 vcpu->arch.shared->msr = cpu_to_le64(val); 668 } 669 SHARED_WRAPPER(dsisr, 32) 670 SHARED_WRAPPER(int_pending, 32) 671 SHARED_WRAPPER(sprg4, 64) 672 SHARED_WRAPPER(sprg5, 64) 673 SHARED_WRAPPER(sprg6, 64) 674 SHARED_WRAPPER(sprg7, 64) 675 676 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 677 { 678 if (kvmppc_shared_big_endian(vcpu)) 679 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 680 else 681 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 682 } 683 684 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 685 { 686 if (kvmppc_shared_big_endian(vcpu)) 687 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 688 else 689 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 690 } 691 692 /* 693 * Please call after prepare_to_enter. This function puts the lazy ee and irq 694 * disabled tracking state back to normal mode, without actually enabling 695 * interrupts. 696 */ 697 static inline void kvmppc_fix_ee_before_entry(void) 698 { 699 trace_hardirqs_on(); 700 701 #ifdef CONFIG_PPC64 702 /* 703 * To avoid races, the caller must have gone directly from having 704 * interrupts fully-enabled to hard-disabled. 705 */ 706 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 707 708 /* Only need to enable IRQs by hard enabling them after this */ 709 local_paca->irq_happened = 0; 710 local_paca->soft_enabled = 1; 711 #endif 712 } 713 714 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 715 { 716 ulong ea; 717 ulong msr_64bit = 0; 718 719 ea = kvmppc_get_gpr(vcpu, rb); 720 if (ra) 721 ea += kvmppc_get_gpr(vcpu, ra); 722 723 #if defined(CONFIG_PPC_BOOK3E_64) 724 msr_64bit = MSR_CM; 725 #elif defined(CONFIG_PPC_BOOK3S_64) 726 msr_64bit = MSR_SF; 727 #endif 728 729 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 730 ea = (uint32_t)ea; 731 732 return ea; 733 } 734 735 extern void xics_wake_cpu(int cpu); 736 737 #endif /* __POWERPC_KVM_PPC_H__ */ 738