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 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 291 struct irq_bypass_producer *); 292 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 293 struct irq_bypass_producer *); 294 }; 295 296 extern struct kvmppc_ops *kvmppc_hv_ops; 297 extern struct kvmppc_ops *kvmppc_pr_ops; 298 299 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 300 enum instruction_type type, u32 *inst) 301 { 302 int ret = EMULATE_DONE; 303 u32 fetched_inst; 304 305 /* Load the instruction manually if it failed to do so in the 306 * exit path */ 307 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 308 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 309 310 /* Write fetch_failed unswapped if the fetch failed */ 311 if (ret == EMULATE_DONE) 312 fetched_inst = kvmppc_need_byteswap(vcpu) ? 313 swab32(vcpu->arch.last_inst) : 314 vcpu->arch.last_inst; 315 else 316 fetched_inst = vcpu->arch.last_inst; 317 318 *inst = fetched_inst; 319 return ret; 320 } 321 322 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 323 { 324 return kvm->arch.kvm_ops == kvmppc_hv_ops; 325 } 326 327 extern int kvmppc_hwrng_present(void); 328 329 /* 330 * Cuts out inst bits with ordering according to spec. 331 * That means the leftmost bit is zero. All given bits are included. 332 */ 333 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 334 { 335 u32 r; 336 u32 mask; 337 338 BUG_ON(msb > lsb); 339 340 mask = (1 << (lsb - msb + 1)) - 1; 341 r = (inst >> (63 - lsb)) & mask; 342 343 return r; 344 } 345 346 /* 347 * Replaces inst bits with ordering according to spec. 348 */ 349 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 350 { 351 u32 r; 352 u32 mask; 353 354 BUG_ON(msb > lsb); 355 356 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 357 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 358 359 return r; 360 } 361 362 #define one_reg_size(id) \ 363 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 364 365 #define get_reg_val(id, reg) ({ \ 366 union kvmppc_one_reg __u; \ 367 switch (one_reg_size(id)) { \ 368 case 4: __u.wval = (reg); break; \ 369 case 8: __u.dval = (reg); break; \ 370 default: BUG(); \ 371 } \ 372 __u; \ 373 }) 374 375 376 #define set_reg_val(id, val) ({ \ 377 u64 __v; \ 378 switch (one_reg_size(id)) { \ 379 case 4: __v = (val).wval; break; \ 380 case 8: __v = (val).dval; break; \ 381 default: BUG(); \ 382 } \ 383 __v; \ 384 }) 385 386 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 387 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 388 389 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 390 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 391 392 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 393 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 394 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 395 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 396 397 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 398 399 struct openpic; 400 401 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 402 extern void kvm_cma_reserve(void) __init; 403 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 404 { 405 paca[cpu].kvm_hstate.xics_phys = addr; 406 } 407 408 static inline u32 kvmppc_get_xics_latch(void) 409 { 410 u32 xirr; 411 412 xirr = get_paca()->kvm_hstate.saved_xirr; 413 get_paca()->kvm_hstate.saved_xirr = 0; 414 return xirr; 415 } 416 417 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 418 { 419 paca[cpu].kvm_hstate.host_ipi = host_ipi; 420 } 421 422 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 423 { 424 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 425 } 426 427 extern void kvm_hv_vm_activated(void); 428 extern void kvm_hv_vm_deactivated(void); 429 extern bool kvm_hv_mode_active(void); 430 431 #else 432 static inline void __init kvm_cma_reserve(void) 433 {} 434 435 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 436 {} 437 438 static inline u32 kvmppc_get_xics_latch(void) 439 { 440 return 0; 441 } 442 443 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 444 {} 445 446 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 447 { 448 kvm_vcpu_kick(vcpu); 449 } 450 451 static inline bool kvm_hv_mode_active(void) { return false; } 452 453 #endif 454 455 #ifdef CONFIG_KVM_XICS 456 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 457 { 458 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 459 } 460 461 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 462 struct kvm *kvm) 463 { 464 if (kvm && kvm_irq_bypass) 465 return kvm->arch.pimap; 466 return NULL; 467 } 468 469 extern void kvmppc_alloc_host_rm_ops(void); 470 extern void kvmppc_free_host_rm_ops(void); 471 extern void kvmppc_free_pimap(struct kvm *kvm); 472 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 473 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 474 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 475 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 476 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 477 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 478 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 479 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 480 struct kvm_vcpu *vcpu, u32 cpu); 481 extern void kvmppc_xics_ipi_action(void); 482 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 483 unsigned long host_irq); 484 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 485 unsigned long host_irq); 486 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 487 struct kvmppc_irq_map *irq_map, 488 struct kvmppc_passthru_irqmap *pimap, 489 bool *again); 490 extern int h_ipi_redirect; 491 #else 492 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 493 struct kvm *kvm) 494 { return NULL; } 495 static inline void kvmppc_alloc_host_rm_ops(void) {}; 496 static inline void kvmppc_free_host_rm_ops(void) {}; 497 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 498 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 499 { return 0; } 500 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 501 { return 0; } 502 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 503 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 504 unsigned long server) 505 { return -EINVAL; } 506 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 507 struct kvm_irq_level *args) 508 { return -ENOTTY; } 509 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 510 { return 0; } 511 #endif 512 513 /* 514 * Prototypes for functions called only from assembler code. 515 * Having prototypes reduces sparse errors. 516 */ 517 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 518 unsigned long ioba, unsigned long tce); 519 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 520 unsigned long liobn, unsigned long ioba, 521 unsigned long tce_list, unsigned long npages); 522 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 523 unsigned long liobn, unsigned long ioba, 524 unsigned long tce_value, unsigned long npages); 525 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 526 unsigned int yield_count); 527 long kvmppc_h_random(struct kvm_vcpu *vcpu); 528 void kvmhv_commence_exit(int trap); 529 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 530 void kvmppc_subcore_enter_guest(void); 531 void kvmppc_subcore_exit_guest(void); 532 long kvmppc_realmode_hmi_handler(void); 533 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 534 long pte_index, unsigned long pteh, unsigned long ptel); 535 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 536 unsigned long pte_index, unsigned long avpn); 537 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 538 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 539 unsigned long pte_index, unsigned long avpn, 540 unsigned long va); 541 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 542 unsigned long pte_index); 543 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 544 unsigned long pte_index); 545 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 546 unsigned long pte_index); 547 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 548 unsigned long slb_v, unsigned int status, bool data); 549 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 550 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 551 unsigned long mfrr); 552 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 553 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 554 555 /* 556 * Host-side operations we want to set up while running in real 557 * mode in the guest operating on the xics. 558 * Currently only VCPU wakeup is supported. 559 */ 560 561 union kvmppc_rm_state { 562 unsigned long raw; 563 struct { 564 u32 in_host; 565 u32 rm_action; 566 }; 567 }; 568 569 struct kvmppc_host_rm_core { 570 union kvmppc_rm_state rm_state; 571 void *rm_data; 572 char pad[112]; 573 }; 574 575 struct kvmppc_host_rm_ops { 576 struct kvmppc_host_rm_core *rm_core; 577 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 578 }; 579 580 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 581 582 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 583 { 584 #ifdef CONFIG_KVM_BOOKE_HV 585 return mfspr(SPRN_GEPR); 586 #elif defined(CONFIG_BOOKE) 587 return vcpu->arch.epr; 588 #else 589 return 0; 590 #endif 591 } 592 593 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 594 { 595 #ifdef CONFIG_KVM_BOOKE_HV 596 mtspr(SPRN_GEPR, epr); 597 #elif defined(CONFIG_BOOKE) 598 vcpu->arch.epr = epr; 599 #endif 600 } 601 602 #ifdef CONFIG_KVM_MPIC 603 604 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 605 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 606 u32 cpu); 607 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 608 609 #else 610 611 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 612 { 613 } 614 615 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 616 struct kvm_vcpu *vcpu, u32 cpu) 617 { 618 return -EINVAL; 619 } 620 621 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 622 struct kvm_vcpu *vcpu) 623 { 624 } 625 626 #endif /* CONFIG_KVM_MPIC */ 627 628 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 629 struct kvm_config_tlb *cfg); 630 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 631 struct kvm_dirty_tlb *cfg); 632 633 long kvmppc_alloc_lpid(void); 634 void kvmppc_claim_lpid(long lpid); 635 void kvmppc_free_lpid(long lpid); 636 void kvmppc_init_lpid(unsigned long nr_lpids); 637 638 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 639 { 640 struct page *page; 641 /* 642 * We can only access pages that the kernel maps 643 * as memory. Bail out for unmapped ones. 644 */ 645 if (!pfn_valid(pfn)) 646 return; 647 648 /* Clear i-cache for new pages */ 649 page = pfn_to_page(pfn); 650 if (!test_bit(PG_arch_1, &page->flags)) { 651 flush_dcache_icache_page(page); 652 set_bit(PG_arch_1, &page->flags); 653 } 654 } 655 656 /* 657 * Shared struct helpers. The shared struct can be little or big endian, 658 * depending on the guest endianness. So expose helpers to all of them. 659 */ 660 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 661 { 662 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 663 /* Only Book3S_64 PR supports bi-endian for now */ 664 return vcpu->arch.shared_big_endian; 665 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 666 /* Book3s_64 HV on little endian is always little endian */ 667 return false; 668 #else 669 return true; 670 #endif 671 } 672 673 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 674 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 675 { \ 676 return mfspr(bookehv_spr); \ 677 } \ 678 679 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 680 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 681 { \ 682 mtspr(bookehv_spr, val); \ 683 } \ 684 685 #define SHARED_WRAPPER_GET(reg, size) \ 686 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 687 { \ 688 if (kvmppc_shared_big_endian(vcpu)) \ 689 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 690 else \ 691 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 692 } \ 693 694 #define SHARED_WRAPPER_SET(reg, size) \ 695 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 696 { \ 697 if (kvmppc_shared_big_endian(vcpu)) \ 698 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 699 else \ 700 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 701 } \ 702 703 #define SHARED_WRAPPER(reg, size) \ 704 SHARED_WRAPPER_GET(reg, size) \ 705 SHARED_WRAPPER_SET(reg, size) \ 706 707 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 708 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 709 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 710 711 #ifdef CONFIG_KVM_BOOKE_HV 712 713 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 714 SPRNG_WRAPPER(reg, bookehv_spr) \ 715 716 #else 717 718 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 719 SHARED_WRAPPER(reg, size) \ 720 721 #endif 722 723 SHARED_WRAPPER(critical, 64) 724 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 725 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 726 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 727 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 728 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 729 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 730 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 731 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 732 SHARED_WRAPPER_GET(msr, 64) 733 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 734 { 735 if (kvmppc_shared_big_endian(vcpu)) 736 vcpu->arch.shared->msr = cpu_to_be64(val); 737 else 738 vcpu->arch.shared->msr = cpu_to_le64(val); 739 } 740 SHARED_WRAPPER(dsisr, 32) 741 SHARED_WRAPPER(int_pending, 32) 742 SHARED_WRAPPER(sprg4, 64) 743 SHARED_WRAPPER(sprg5, 64) 744 SHARED_WRAPPER(sprg6, 64) 745 SHARED_WRAPPER(sprg7, 64) 746 747 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 748 { 749 if (kvmppc_shared_big_endian(vcpu)) 750 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 751 else 752 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 753 } 754 755 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 756 { 757 if (kvmppc_shared_big_endian(vcpu)) 758 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 759 else 760 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 761 } 762 763 /* 764 * Please call after prepare_to_enter. This function puts the lazy ee and irq 765 * disabled tracking state back to normal mode, without actually enabling 766 * interrupts. 767 */ 768 static inline void kvmppc_fix_ee_before_entry(void) 769 { 770 trace_hardirqs_on(); 771 772 #ifdef CONFIG_PPC64 773 /* 774 * To avoid races, the caller must have gone directly from having 775 * interrupts fully-enabled to hard-disabled. 776 */ 777 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 778 779 /* Only need to enable IRQs by hard enabling them after this */ 780 local_paca->irq_happened = 0; 781 local_paca->soft_enabled = 1; 782 #endif 783 } 784 785 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 786 { 787 ulong ea; 788 ulong msr_64bit = 0; 789 790 ea = kvmppc_get_gpr(vcpu, rb); 791 if (ra) 792 ea += kvmppc_get_gpr(vcpu, ra); 793 794 #if defined(CONFIG_PPC_BOOK3E_64) 795 msr_64bit = MSR_CM; 796 #elif defined(CONFIG_PPC_BOOK3S_64) 797 msr_64bit = MSR_SF; 798 #endif 799 800 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 801 ea = (uint32_t)ea; 802 803 return ea; 804 } 805 806 extern void xics_wake_cpu(int cpu); 807 808 #endif /* __POWERPC_KVM_PPC_H__ */ 809