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 int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); 159 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); 160 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); 161 extern void kvmppc_free_hpt(struct kvm_hpt_info *info); 162 extern long kvmppc_prepare_vrma(struct kvm *kvm, 163 struct kvm_userspace_memory_region *mem); 164 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 165 struct kvm_memory_slot *memslot, unsigned long porder); 166 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 167 168 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 169 struct kvm_create_spapr_tce_64 *args); 170 extern struct kvmppc_spapr_tce_table *kvmppc_find_table( 171 struct kvm_vcpu *vcpu, unsigned long liobn); 172 extern long kvmppc_ioba_validate(struct kvmppc_spapr_tce_table *stt, 173 unsigned long ioba, unsigned long npages); 174 extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt, 175 unsigned long tce); 176 extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa, 177 unsigned long *ua, unsigned long **prmap); 178 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt, 179 unsigned long idx, unsigned long tce); 180 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 181 unsigned long ioba, unsigned long tce); 182 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 183 unsigned long liobn, unsigned long ioba, 184 unsigned long tce_list, unsigned long npages); 185 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 186 unsigned long liobn, unsigned long ioba, 187 unsigned long tce_value, unsigned long npages); 188 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 189 unsigned long ioba); 190 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 191 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 192 extern int kvmppc_core_init_vm(struct kvm *kvm); 193 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 194 extern void kvmppc_core_free_memslot(struct kvm *kvm, 195 struct kvm_memory_slot *free, 196 struct kvm_memory_slot *dont); 197 extern int kvmppc_core_create_memslot(struct kvm *kvm, 198 struct kvm_memory_slot *slot, 199 unsigned long npages); 200 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 201 struct kvm_memory_slot *memslot, 202 const struct kvm_userspace_memory_region *mem); 203 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 204 const struct kvm_userspace_memory_region *mem, 205 const struct kvm_memory_slot *old, 206 const struct kvm_memory_slot *new); 207 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 208 struct kvm_ppc_smmu_info *info); 209 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 210 struct kvm_memory_slot *memslot); 211 212 extern int kvmppc_bookehv_init(void); 213 extern void kvmppc_bookehv_exit(void); 214 215 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 216 217 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 218 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, 219 struct kvm_ppc_resize_hpt *rhpt); 220 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, 221 struct kvm_ppc_resize_hpt *rhpt); 222 223 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 224 225 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 226 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 227 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 228 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 229 u32 priority); 230 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 231 u32 *priority); 232 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 233 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 234 235 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 236 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 237 238 union kvmppc_one_reg { 239 u32 wval; 240 u64 dval; 241 vector128 vval; 242 u64 vsxval[2]; 243 struct { 244 u64 addr; 245 u64 length; 246 } vpaval; 247 }; 248 249 struct kvmppc_ops { 250 struct module *owner; 251 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 252 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 253 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 254 union kvmppc_one_reg *val); 255 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 256 union kvmppc_one_reg *val); 257 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 258 void (*vcpu_put)(struct kvm_vcpu *vcpu); 259 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 260 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 261 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 262 void (*vcpu_free)(struct kvm_vcpu *vcpu); 263 int (*check_requests)(struct kvm_vcpu *vcpu); 264 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 265 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 266 int (*prepare_memory_region)(struct kvm *kvm, 267 struct kvm_memory_slot *memslot, 268 const struct kvm_userspace_memory_region *mem); 269 void (*commit_memory_region)(struct kvm *kvm, 270 const struct kvm_userspace_memory_region *mem, 271 const struct kvm_memory_slot *old, 272 const struct kvm_memory_slot *new); 273 int (*unmap_hva)(struct kvm *kvm, unsigned long hva); 274 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 275 unsigned long end); 276 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 277 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 278 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 279 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 280 void (*free_memslot)(struct kvm_memory_slot *free, 281 struct kvm_memory_slot *dont); 282 int (*create_memslot)(struct kvm_memory_slot *slot, 283 unsigned long npages); 284 int (*init_vm)(struct kvm *kvm); 285 void (*destroy_vm)(struct kvm *kvm); 286 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 287 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 288 unsigned int inst, int *advance); 289 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 290 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 291 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 292 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 293 unsigned long arg); 294 int (*hcall_implemented)(unsigned long hcall); 295 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 296 struct irq_bypass_producer *); 297 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 298 struct irq_bypass_producer *); 299 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 300 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 301 }; 302 303 extern struct kvmppc_ops *kvmppc_hv_ops; 304 extern struct kvmppc_ops *kvmppc_pr_ops; 305 306 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 307 enum instruction_type type, u32 *inst) 308 { 309 int ret = EMULATE_DONE; 310 u32 fetched_inst; 311 312 /* Load the instruction manually if it failed to do so in the 313 * exit path */ 314 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 315 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 316 317 /* Write fetch_failed unswapped if the fetch failed */ 318 if (ret == EMULATE_DONE) 319 fetched_inst = kvmppc_need_byteswap(vcpu) ? 320 swab32(vcpu->arch.last_inst) : 321 vcpu->arch.last_inst; 322 else 323 fetched_inst = vcpu->arch.last_inst; 324 325 *inst = fetched_inst; 326 return ret; 327 } 328 329 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 330 { 331 return kvm->arch.kvm_ops == kvmppc_hv_ops; 332 } 333 334 extern int kvmppc_hwrng_present(void); 335 336 /* 337 * Cuts out inst bits with ordering according to spec. 338 * That means the leftmost bit is zero. All given bits are included. 339 */ 340 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 341 { 342 u32 r; 343 u32 mask; 344 345 BUG_ON(msb > lsb); 346 347 mask = (1 << (lsb - msb + 1)) - 1; 348 r = (inst >> (63 - lsb)) & mask; 349 350 return r; 351 } 352 353 /* 354 * Replaces inst bits with ordering according to spec. 355 */ 356 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 357 { 358 u32 r; 359 u32 mask; 360 361 BUG_ON(msb > lsb); 362 363 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 364 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 365 366 return r; 367 } 368 369 #define one_reg_size(id) \ 370 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 371 372 #define get_reg_val(id, reg) ({ \ 373 union kvmppc_one_reg __u; \ 374 switch (one_reg_size(id)) { \ 375 case 4: __u.wval = (reg); break; \ 376 case 8: __u.dval = (reg); break; \ 377 default: BUG(); \ 378 } \ 379 __u; \ 380 }) 381 382 383 #define set_reg_val(id, val) ({ \ 384 u64 __v; \ 385 switch (one_reg_size(id)) { \ 386 case 4: __v = (val).wval; break; \ 387 case 8: __v = (val).dval; break; \ 388 default: BUG(); \ 389 } \ 390 __v; \ 391 }) 392 393 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 394 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 395 396 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 397 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 398 399 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 400 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 401 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 402 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 403 404 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 405 406 struct openpic; 407 408 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 409 extern void kvm_cma_reserve(void) __init; 410 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 411 { 412 paca[cpu].kvm_hstate.xics_phys = addr; 413 } 414 415 static inline u32 kvmppc_get_xics_latch(void) 416 { 417 u32 xirr; 418 419 xirr = get_paca()->kvm_hstate.saved_xirr; 420 get_paca()->kvm_hstate.saved_xirr = 0; 421 return xirr; 422 } 423 424 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 425 { 426 paca[cpu].kvm_hstate.host_ipi = host_ipi; 427 } 428 429 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 430 { 431 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 432 } 433 434 extern void kvm_hv_vm_activated(void); 435 extern void kvm_hv_vm_deactivated(void); 436 extern bool kvm_hv_mode_active(void); 437 438 #else 439 static inline void __init kvm_cma_reserve(void) 440 {} 441 442 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 443 {} 444 445 static inline u32 kvmppc_get_xics_latch(void) 446 { 447 return 0; 448 } 449 450 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 451 {} 452 453 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 454 { 455 kvm_vcpu_kick(vcpu); 456 } 457 458 static inline bool kvm_hv_mode_active(void) { return false; } 459 460 #endif 461 462 #ifdef CONFIG_KVM_XICS 463 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 464 { 465 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 466 } 467 468 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 469 struct kvm *kvm) 470 { 471 if (kvm && kvm_irq_bypass) 472 return kvm->arch.pimap; 473 return NULL; 474 } 475 476 extern void kvmppc_alloc_host_rm_ops(void); 477 extern void kvmppc_free_host_rm_ops(void); 478 extern void kvmppc_free_pimap(struct kvm *kvm); 479 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 480 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 481 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 482 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 483 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 484 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 485 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 486 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 487 struct kvm_vcpu *vcpu, u32 cpu); 488 extern void kvmppc_xics_ipi_action(void); 489 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 490 unsigned long host_irq); 491 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 492 unsigned long host_irq); 493 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 494 struct kvmppc_irq_map *irq_map, 495 struct kvmppc_passthru_irqmap *pimap, 496 bool *again); 497 extern int h_ipi_redirect; 498 #else 499 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 500 struct kvm *kvm) 501 { return NULL; } 502 static inline void kvmppc_alloc_host_rm_ops(void) {}; 503 static inline void kvmppc_free_host_rm_ops(void) {}; 504 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 505 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 506 { return 0; } 507 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 508 { return 0; } 509 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 510 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 511 unsigned long server) 512 { return -EINVAL; } 513 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 514 struct kvm_irq_level *args) 515 { return -ENOTTY; } 516 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 517 { return 0; } 518 #endif 519 520 /* 521 * Prototypes for functions called only from assembler code. 522 * Having prototypes reduces sparse errors. 523 */ 524 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 525 unsigned long ioba, unsigned long tce); 526 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 527 unsigned long liobn, unsigned long ioba, 528 unsigned long tce_list, unsigned long npages); 529 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 530 unsigned long liobn, unsigned long ioba, 531 unsigned long tce_value, unsigned long npages); 532 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 533 unsigned int yield_count); 534 long kvmppc_h_random(struct kvm_vcpu *vcpu); 535 void kvmhv_commence_exit(int trap); 536 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 537 void kvmppc_subcore_enter_guest(void); 538 void kvmppc_subcore_exit_guest(void); 539 long kvmppc_realmode_hmi_handler(void); 540 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 541 long pte_index, unsigned long pteh, unsigned long ptel); 542 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 543 unsigned long pte_index, unsigned long avpn); 544 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 545 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 546 unsigned long pte_index, unsigned long avpn, 547 unsigned long va); 548 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 549 unsigned long pte_index); 550 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 551 unsigned long pte_index); 552 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 553 unsigned long pte_index); 554 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 555 unsigned long slb_v, unsigned int status, bool data); 556 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 557 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 558 unsigned long mfrr); 559 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 560 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 561 562 /* 563 * Host-side operations we want to set up while running in real 564 * mode in the guest operating on the xics. 565 * Currently only VCPU wakeup is supported. 566 */ 567 568 union kvmppc_rm_state { 569 unsigned long raw; 570 struct { 571 u32 in_host; 572 u32 rm_action; 573 }; 574 }; 575 576 struct kvmppc_host_rm_core { 577 union kvmppc_rm_state rm_state; 578 void *rm_data; 579 char pad[112]; 580 }; 581 582 struct kvmppc_host_rm_ops { 583 struct kvmppc_host_rm_core *rm_core; 584 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 585 }; 586 587 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 588 589 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 590 { 591 #ifdef CONFIG_KVM_BOOKE_HV 592 return mfspr(SPRN_GEPR); 593 #elif defined(CONFIG_BOOKE) 594 return vcpu->arch.epr; 595 #else 596 return 0; 597 #endif 598 } 599 600 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 601 { 602 #ifdef CONFIG_KVM_BOOKE_HV 603 mtspr(SPRN_GEPR, epr); 604 #elif defined(CONFIG_BOOKE) 605 vcpu->arch.epr = epr; 606 #endif 607 } 608 609 #ifdef CONFIG_KVM_MPIC 610 611 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 612 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 613 u32 cpu); 614 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 615 616 #else 617 618 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 619 { 620 } 621 622 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 623 struct kvm_vcpu *vcpu, u32 cpu) 624 { 625 return -EINVAL; 626 } 627 628 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 629 struct kvm_vcpu *vcpu) 630 { 631 } 632 633 #endif /* CONFIG_KVM_MPIC */ 634 635 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 636 struct kvm_config_tlb *cfg); 637 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 638 struct kvm_dirty_tlb *cfg); 639 640 long kvmppc_alloc_lpid(void); 641 void kvmppc_claim_lpid(long lpid); 642 void kvmppc_free_lpid(long lpid); 643 void kvmppc_init_lpid(unsigned long nr_lpids); 644 645 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 646 { 647 struct page *page; 648 /* 649 * We can only access pages that the kernel maps 650 * as memory. Bail out for unmapped ones. 651 */ 652 if (!pfn_valid(pfn)) 653 return; 654 655 /* Clear i-cache for new pages */ 656 page = pfn_to_page(pfn); 657 if (!test_bit(PG_arch_1, &page->flags)) { 658 flush_dcache_icache_page(page); 659 set_bit(PG_arch_1, &page->flags); 660 } 661 } 662 663 /* 664 * Shared struct helpers. The shared struct can be little or big endian, 665 * depending on the guest endianness. So expose helpers to all of them. 666 */ 667 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 668 { 669 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 670 /* Only Book3S_64 PR supports bi-endian for now */ 671 return vcpu->arch.shared_big_endian; 672 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 673 /* Book3s_64 HV on little endian is always little endian */ 674 return false; 675 #else 676 return true; 677 #endif 678 } 679 680 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 681 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 682 { \ 683 return mfspr(bookehv_spr); \ 684 } \ 685 686 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 687 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 688 { \ 689 mtspr(bookehv_spr, val); \ 690 } \ 691 692 #define SHARED_WRAPPER_GET(reg, size) \ 693 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 694 { \ 695 if (kvmppc_shared_big_endian(vcpu)) \ 696 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 697 else \ 698 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 699 } \ 700 701 #define SHARED_WRAPPER_SET(reg, size) \ 702 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 703 { \ 704 if (kvmppc_shared_big_endian(vcpu)) \ 705 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 706 else \ 707 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 708 } \ 709 710 #define SHARED_WRAPPER(reg, size) \ 711 SHARED_WRAPPER_GET(reg, size) \ 712 SHARED_WRAPPER_SET(reg, size) \ 713 714 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 715 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 716 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 717 718 #ifdef CONFIG_KVM_BOOKE_HV 719 720 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 721 SPRNG_WRAPPER(reg, bookehv_spr) \ 722 723 #else 724 725 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 726 SHARED_WRAPPER(reg, size) \ 727 728 #endif 729 730 SHARED_WRAPPER(critical, 64) 731 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 732 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 733 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 734 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 735 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 736 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 737 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 738 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 739 SHARED_WRAPPER_GET(msr, 64) 740 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 741 { 742 if (kvmppc_shared_big_endian(vcpu)) 743 vcpu->arch.shared->msr = cpu_to_be64(val); 744 else 745 vcpu->arch.shared->msr = cpu_to_le64(val); 746 } 747 SHARED_WRAPPER(dsisr, 32) 748 SHARED_WRAPPER(int_pending, 32) 749 SHARED_WRAPPER(sprg4, 64) 750 SHARED_WRAPPER(sprg5, 64) 751 SHARED_WRAPPER(sprg6, 64) 752 SHARED_WRAPPER(sprg7, 64) 753 754 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 755 { 756 if (kvmppc_shared_big_endian(vcpu)) 757 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 758 else 759 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 760 } 761 762 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 763 { 764 if (kvmppc_shared_big_endian(vcpu)) 765 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 766 else 767 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 768 } 769 770 /* 771 * Please call after prepare_to_enter. This function puts the lazy ee and irq 772 * disabled tracking state back to normal mode, without actually enabling 773 * interrupts. 774 */ 775 static inline void kvmppc_fix_ee_before_entry(void) 776 { 777 trace_hardirqs_on(); 778 779 #ifdef CONFIG_PPC64 780 /* 781 * To avoid races, the caller must have gone directly from having 782 * interrupts fully-enabled to hard-disabled. 783 */ 784 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 785 786 /* Only need to enable IRQs by hard enabling them after this */ 787 local_paca->irq_happened = 0; 788 local_paca->soft_enabled = 1; 789 #endif 790 } 791 792 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 793 { 794 ulong ea; 795 ulong msr_64bit = 0; 796 797 ea = kvmppc_get_gpr(vcpu, rb); 798 if (ra) 799 ea += kvmppc_get_gpr(vcpu, ra); 800 801 #if defined(CONFIG_PPC_BOOK3E_64) 802 msr_64bit = MSR_CM; 803 #elif defined(CONFIG_PPC_BOOK3S_64) 804 msr_64bit = MSR_SF; 805 #endif 806 807 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 808 ea = (uint32_t)ea; 809 810 return ea; 811 } 812 813 extern void xics_wake_cpu(int cpu); 814 815 #endif /* __POWERPC_KVM_PPC_H__ */ 816