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 #include <asm/xive.h> 40 #include <asm/cpu_has_feature.h> 41 #endif 42 43 /* 44 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction 45 * for supporting software breakpoint. 46 */ 47 #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00 48 49 enum emulation_result { 50 EMULATE_DONE, /* no further processing */ 51 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 52 EMULATE_FAIL, /* can't emulate this instruction */ 53 EMULATE_AGAIN, /* something went wrong. go again */ 54 EMULATE_EXIT_USER, /* emulation requires exit to user-space */ 55 }; 56 57 enum instruction_fetch_type { 58 INST_GENERIC, 59 INST_SC, /* system call */ 60 }; 61 62 enum xlate_instdata { 63 XLATE_INST, /* translate instruction address */ 64 XLATE_DATA /* translate data address */ 65 }; 66 67 enum xlate_readwrite { 68 XLATE_READ, /* check for read permissions */ 69 XLATE_WRITE /* check for write permissions */ 70 }; 71 72 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 73 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 74 extern void kvmppc_handler_highmem(void); 75 76 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 77 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 78 unsigned int rt, unsigned int bytes, 79 int is_default_endian); 80 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 81 unsigned int rt, unsigned int bytes, 82 int is_default_endian); 83 extern int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 84 unsigned int rt, unsigned int bytes, 85 int is_default_endian, int mmio_sign_extend); 86 extern int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 87 unsigned int rt, unsigned int bytes, int is_default_endian); 88 extern int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 89 unsigned int rs, unsigned int bytes, int is_default_endian); 90 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 91 u64 val, unsigned int bytes, 92 int is_default_endian); 93 extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 94 int rs, unsigned int bytes, 95 int is_default_endian); 96 97 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, 98 enum instruction_fetch_type type, u32 *inst); 99 100 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 101 bool data); 102 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 103 bool data); 104 extern int kvmppc_emulate_instruction(struct kvm_run *run, 105 struct kvm_vcpu *vcpu); 106 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 107 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 108 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 109 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 110 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); 111 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 112 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 113 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 114 115 /* Core-specific hooks */ 116 117 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 118 unsigned int gtlb_idx); 119 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 120 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 121 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 122 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 123 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 124 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 125 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 126 gva_t eaddr); 127 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 128 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 129 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 130 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 131 struct kvmppc_pte *pte); 132 133 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 134 unsigned int id); 135 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 136 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 137 extern int kvmppc_core_check_processor_compat(void); 138 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 139 struct kvm_translation *tr); 140 141 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 142 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 143 144 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 145 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 146 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags); 147 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 148 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu); 149 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu); 150 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu); 151 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 152 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 153 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 154 struct kvm_interrupt *irq); 155 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 156 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 157 ulong esr_flags); 158 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 159 ulong dear_flags, 160 ulong esr_flags); 161 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 162 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 163 ulong esr_flags); 164 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 165 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 166 167 extern int kvmppc_booke_init(void); 168 extern void kvmppc_booke_exit(void); 169 170 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 171 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 172 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 173 174 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); 175 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); 176 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); 177 extern void kvmppc_free_hpt(struct kvm_hpt_info *info); 178 extern void kvmppc_rmap_reset(struct kvm *kvm); 179 extern long kvmppc_prepare_vrma(struct kvm *kvm, 180 struct kvm_userspace_memory_region *mem); 181 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 182 struct kvm_memory_slot *memslot, unsigned long porder); 183 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 184 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd, 185 struct iommu_group *grp); 186 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm, 187 struct iommu_group *grp); 188 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm); 189 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm); 190 extern void kvmppc_setup_partition_table(struct kvm *kvm); 191 192 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 193 struct kvm_create_spapr_tce_64 *args); 194 extern struct kvmppc_spapr_tce_table *kvmppc_find_table( 195 struct kvm *kvm, unsigned long liobn); 196 #define kvmppc_ioba_validate(stt, ioba, npages) \ 197 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \ 198 (stt)->size, (ioba), (npages)) ? \ 199 H_PARAMETER : H_SUCCESS) 200 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 201 unsigned long ioba, unsigned long tce); 202 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 203 unsigned long liobn, unsigned long ioba, 204 unsigned long tce_list, unsigned long npages); 205 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 206 unsigned long liobn, unsigned long ioba, 207 unsigned long tce_value, unsigned long npages); 208 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 209 unsigned long ioba); 210 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 211 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 212 extern int kvmppc_core_init_vm(struct kvm *kvm); 213 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 214 extern void kvmppc_core_free_memslot(struct kvm *kvm, 215 struct kvm_memory_slot *free, 216 struct kvm_memory_slot *dont); 217 extern int kvmppc_core_create_memslot(struct kvm *kvm, 218 struct kvm_memory_slot *slot, 219 unsigned long npages); 220 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 221 struct kvm_memory_slot *memslot, 222 const struct kvm_userspace_memory_region *mem); 223 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 224 const struct kvm_userspace_memory_region *mem, 225 const struct kvm_memory_slot *old, 226 const struct kvm_memory_slot *new, 227 enum kvm_mr_change change); 228 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 229 struct kvm_ppc_smmu_info *info); 230 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 231 struct kvm_memory_slot *memslot); 232 233 extern int kvmppc_bookehv_init(void); 234 extern void kvmppc_bookehv_exit(void); 235 236 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 237 238 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 239 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, 240 struct kvm_ppc_resize_hpt *rhpt); 241 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, 242 struct kvm_ppc_resize_hpt *rhpt); 243 244 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 245 246 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 247 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 248 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 249 250 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 251 u32 priority); 252 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 253 u32 *priority); 254 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 255 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 256 257 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 258 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 259 260 union kvmppc_one_reg { 261 u32 wval; 262 u64 dval; 263 vector128 vval; 264 u64 vsxval[2]; 265 u32 vsx32val[4]; 266 u16 vsx16val[8]; 267 u8 vsx8val[16]; 268 struct { 269 u64 addr; 270 u64 length; 271 } vpaval; 272 u64 xive_timaval[2]; 273 }; 274 275 struct kvmppc_ops { 276 struct module *owner; 277 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 278 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 279 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 280 union kvmppc_one_reg *val); 281 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 282 union kvmppc_one_reg *val); 283 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 284 void (*vcpu_put)(struct kvm_vcpu *vcpu); 285 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 286 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 287 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 288 void (*vcpu_free)(struct kvm_vcpu *vcpu); 289 int (*check_requests)(struct kvm_vcpu *vcpu); 290 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 291 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 292 int (*prepare_memory_region)(struct kvm *kvm, 293 struct kvm_memory_slot *memslot, 294 const struct kvm_userspace_memory_region *mem); 295 void (*commit_memory_region)(struct kvm *kvm, 296 const struct kvm_userspace_memory_region *mem, 297 const struct kvm_memory_slot *old, 298 const struct kvm_memory_slot *new, 299 enum kvm_mr_change change); 300 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 301 unsigned long end); 302 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 303 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 304 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 305 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 306 void (*free_memslot)(struct kvm_memory_slot *free, 307 struct kvm_memory_slot *dont); 308 int (*create_memslot)(struct kvm_memory_slot *slot, 309 unsigned long npages); 310 int (*init_vm)(struct kvm *kvm); 311 void (*destroy_vm)(struct kvm *kvm); 312 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 313 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 314 unsigned int inst, int *advance); 315 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 316 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 317 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 318 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 319 unsigned long arg); 320 int (*hcall_implemented)(unsigned long hcall); 321 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 322 struct irq_bypass_producer *); 323 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 324 struct irq_bypass_producer *); 325 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 326 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 327 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode, 328 unsigned long flags); 329 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr); 330 int (*enable_nested)(struct kvm *kvm); 331 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 332 int size); 333 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 334 int size); 335 }; 336 337 extern struct kvmppc_ops *kvmppc_hv_ops; 338 extern struct kvmppc_ops *kvmppc_pr_ops; 339 340 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 341 enum instruction_fetch_type type, u32 *inst) 342 { 343 int ret = EMULATE_DONE; 344 u32 fetched_inst; 345 346 /* Load the instruction manually if it failed to do so in the 347 * exit path */ 348 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 349 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 350 351 /* Write fetch_failed unswapped if the fetch failed */ 352 if (ret == EMULATE_DONE) 353 fetched_inst = kvmppc_need_byteswap(vcpu) ? 354 swab32(vcpu->arch.last_inst) : 355 vcpu->arch.last_inst; 356 else 357 fetched_inst = vcpu->arch.last_inst; 358 359 *inst = fetched_inst; 360 return ret; 361 } 362 363 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 364 { 365 return kvm->arch.kvm_ops == kvmppc_hv_ops; 366 } 367 368 extern int kvmppc_hwrng_present(void); 369 370 /* 371 * Cuts out inst bits with ordering according to spec. 372 * That means the leftmost bit is zero. All given bits are included. 373 */ 374 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 375 { 376 u32 r; 377 u32 mask; 378 379 BUG_ON(msb > lsb); 380 381 mask = (1 << (lsb - msb + 1)) - 1; 382 r = (inst >> (63 - lsb)) & mask; 383 384 return r; 385 } 386 387 /* 388 * Replaces inst bits with ordering according to spec. 389 */ 390 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 391 { 392 u32 r; 393 u32 mask; 394 395 BUG_ON(msb > lsb); 396 397 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 398 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 399 400 return r; 401 } 402 403 #define one_reg_size(id) \ 404 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 405 406 #define get_reg_val(id, reg) ({ \ 407 union kvmppc_one_reg __u; \ 408 switch (one_reg_size(id)) { \ 409 case 4: __u.wval = (reg); break; \ 410 case 8: __u.dval = (reg); break; \ 411 default: BUG(); \ 412 } \ 413 __u; \ 414 }) 415 416 417 #define set_reg_val(id, val) ({ \ 418 u64 __v; \ 419 switch (one_reg_size(id)) { \ 420 case 4: __v = (val).wval; break; \ 421 case 8: __v = (val).dval; break; \ 422 default: BUG(); \ 423 } \ 424 __v; \ 425 }) 426 427 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 428 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 429 430 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 431 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 432 433 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 434 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 435 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 436 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 437 438 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 439 440 struct openpic; 441 442 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 443 extern void kvm_cma_reserve(void) __init; 444 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 445 { 446 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr; 447 } 448 449 static inline void kvmppc_set_xive_tima(int cpu, 450 unsigned long phys_addr, 451 void __iomem *virt_addr) 452 { 453 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 454 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr; 455 } 456 457 static inline u32 kvmppc_get_xics_latch(void) 458 { 459 u32 xirr; 460 461 xirr = get_paca()->kvm_hstate.saved_xirr; 462 get_paca()->kvm_hstate.saved_xirr = 0; 463 return xirr; 464 } 465 466 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 467 { 468 paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi; 469 } 470 471 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 472 { 473 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 474 } 475 476 extern void kvm_hv_vm_activated(void); 477 extern void kvm_hv_vm_deactivated(void); 478 extern bool kvm_hv_mode_active(void); 479 480 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu, 481 struct kvm_nested_guest *nested); 482 483 #else 484 static inline void __init kvm_cma_reserve(void) 485 {} 486 487 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 488 {} 489 490 static inline void kvmppc_set_xive_tima(int cpu, 491 unsigned long phys_addr, 492 void __iomem *virt_addr) 493 {} 494 495 static inline u32 kvmppc_get_xics_latch(void) 496 { 497 return 0; 498 } 499 500 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 501 {} 502 503 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 504 { 505 kvm_vcpu_kick(vcpu); 506 } 507 508 static inline bool kvm_hv_mode_active(void) { return false; } 509 510 #endif 511 512 #ifdef CONFIG_KVM_XICS 513 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 514 { 515 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 516 } 517 518 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 519 struct kvm *kvm) 520 { 521 if (kvm && kvm_irq_bypass) 522 return kvm->arch.pimap; 523 return NULL; 524 } 525 526 extern void kvmppc_alloc_host_rm_ops(void); 527 extern void kvmppc_free_host_rm_ops(void); 528 extern void kvmppc_free_pimap(struct kvm *kvm); 529 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 530 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 531 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 532 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 533 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 534 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 535 struct kvm_vcpu *vcpu, u32 cpu); 536 extern void kvmppc_xics_ipi_action(void); 537 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 538 unsigned long host_irq); 539 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 540 unsigned long host_irq); 541 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 542 struct kvmppc_irq_map *irq_map, 543 struct kvmppc_passthru_irqmap *pimap, 544 bool *again); 545 546 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 547 int level, bool line_status); 548 549 extern int h_ipi_redirect; 550 #else 551 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 552 struct kvm *kvm) 553 { return NULL; } 554 static inline void kvmppc_alloc_host_rm_ops(void) {}; 555 static inline void kvmppc_free_host_rm_ops(void) {}; 556 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 557 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 558 { return 0; } 559 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 560 { return 0; } 561 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 562 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 563 { return 0; } 564 #endif 565 566 #ifdef CONFIG_KVM_XIVE 567 /* 568 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 569 * ie. P9 new interrupt controller, while the second "xive" is the legacy 570 * "eXternal Interrupt Vector Entry" which is the configuration of an 571 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 572 * two function consume or produce a legacy "XIVE" state from the 573 * new "XIVE" interrupt controller. 574 */ 575 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 576 u32 priority); 577 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 578 u32 *priority); 579 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 580 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 581 extern void kvmppc_xive_init_module(void); 582 extern void kvmppc_xive_exit_module(void); 583 584 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 585 struct kvm_vcpu *vcpu, u32 cpu); 586 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 587 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 588 struct irq_desc *host_desc); 589 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 590 struct irq_desc *host_desc); 591 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 592 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 593 594 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 595 int level, bool line_status); 596 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 597 598 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 599 { 600 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE; 601 } 602 603 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 604 struct kvm_vcpu *vcpu, u32 cpu); 605 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu); 606 extern void kvmppc_xive_native_init_module(void); 607 extern void kvmppc_xive_native_exit_module(void); 608 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 609 union kvmppc_one_reg *val); 610 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 611 union kvmppc_one_reg *val); 612 613 #else 614 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 615 u32 priority) { return -1; } 616 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 617 u32 *priority) { return -1; } 618 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 619 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 620 static inline void kvmppc_xive_init_module(void) { } 621 static inline void kvmppc_xive_exit_module(void) { } 622 623 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 624 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 625 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 626 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 627 struct irq_desc *host_desc) { return -ENODEV; } 628 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 629 struct irq_desc *host_desc) { return -ENODEV; } 630 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 631 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 632 633 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 634 int level, bool line_status) { return -ENODEV; } 635 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } 636 637 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) 638 { return 0; } 639 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, 640 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 641 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 642 static inline void kvmppc_xive_native_init_module(void) { } 643 static inline void kvmppc_xive_native_exit_module(void) { } 644 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, 645 union kvmppc_one_reg *val) 646 { return 0; } 647 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, 648 union kvmppc_one_reg *val) 649 { return -ENOENT; } 650 651 #endif /* CONFIG_KVM_XIVE */ 652 653 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER) 654 static inline bool xics_on_xive(void) 655 { 656 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE); 657 } 658 #else 659 static inline bool xics_on_xive(void) 660 { 661 return false; 662 } 663 #endif 664 665 /* 666 * Prototypes for functions called only from assembler code. 667 * Having prototypes reduces sparse errors. 668 */ 669 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 670 unsigned long ioba, unsigned long tce); 671 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 672 unsigned long liobn, unsigned long ioba, 673 unsigned long tce_list, unsigned long npages); 674 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 675 unsigned long liobn, unsigned long ioba, 676 unsigned long tce_value, unsigned long npages); 677 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 678 unsigned int yield_count); 679 long kvmppc_h_random(struct kvm_vcpu *vcpu); 680 void kvmhv_commence_exit(int trap); 681 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 682 void kvmppc_subcore_enter_guest(void); 683 void kvmppc_subcore_exit_guest(void); 684 long kvmppc_realmode_hmi_handler(void); 685 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 686 long pte_index, unsigned long pteh, unsigned long ptel); 687 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 688 unsigned long pte_index, unsigned long avpn); 689 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 690 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 691 unsigned long pte_index, unsigned long avpn, 692 unsigned long va); 693 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 694 unsigned long pte_index); 695 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 696 unsigned long pte_index); 697 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 698 unsigned long pte_index); 699 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags, 700 unsigned long dest, unsigned long src); 701 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 702 unsigned long slb_v, unsigned int status, bool data); 703 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 704 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 705 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 706 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 707 unsigned long mfrr); 708 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 709 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 710 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 711 712 /* 713 * Host-side operations we want to set up while running in real 714 * mode in the guest operating on the xics. 715 * Currently only VCPU wakeup is supported. 716 */ 717 718 union kvmppc_rm_state { 719 unsigned long raw; 720 struct { 721 u32 in_host; 722 u32 rm_action; 723 }; 724 }; 725 726 struct kvmppc_host_rm_core { 727 union kvmppc_rm_state rm_state; 728 void *rm_data; 729 char pad[112]; 730 }; 731 732 struct kvmppc_host_rm_ops { 733 struct kvmppc_host_rm_core *rm_core; 734 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 735 }; 736 737 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 738 739 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 740 { 741 #ifdef CONFIG_KVM_BOOKE_HV 742 return mfspr(SPRN_GEPR); 743 #elif defined(CONFIG_BOOKE) 744 return vcpu->arch.epr; 745 #else 746 return 0; 747 #endif 748 } 749 750 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 751 { 752 #ifdef CONFIG_KVM_BOOKE_HV 753 mtspr(SPRN_GEPR, epr); 754 #elif defined(CONFIG_BOOKE) 755 vcpu->arch.epr = epr; 756 #endif 757 } 758 759 #ifdef CONFIG_KVM_MPIC 760 761 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 762 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 763 u32 cpu); 764 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 765 766 #else 767 768 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 769 { 770 } 771 772 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 773 struct kvm_vcpu *vcpu, u32 cpu) 774 { 775 return -EINVAL; 776 } 777 778 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 779 struct kvm_vcpu *vcpu) 780 { 781 } 782 783 #endif /* CONFIG_KVM_MPIC */ 784 785 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 786 struct kvm_config_tlb *cfg); 787 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 788 struct kvm_dirty_tlb *cfg); 789 790 long kvmppc_alloc_lpid(void); 791 void kvmppc_claim_lpid(long lpid); 792 void kvmppc_free_lpid(long lpid); 793 void kvmppc_init_lpid(unsigned long nr_lpids); 794 795 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 796 { 797 struct page *page; 798 /* 799 * We can only access pages that the kernel maps 800 * as memory. Bail out for unmapped ones. 801 */ 802 if (!pfn_valid(pfn)) 803 return; 804 805 /* Clear i-cache for new pages */ 806 page = pfn_to_page(pfn); 807 if (!test_bit(PG_arch_1, &page->flags)) { 808 flush_dcache_icache_page(page); 809 set_bit(PG_arch_1, &page->flags); 810 } 811 } 812 813 /* 814 * Shared struct helpers. The shared struct can be little or big endian, 815 * depending on the guest endianness. So expose helpers to all of them. 816 */ 817 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 818 { 819 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 820 /* Only Book3S_64 PR supports bi-endian for now */ 821 return vcpu->arch.shared_big_endian; 822 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 823 /* Book3s_64 HV on little endian is always little endian */ 824 return false; 825 #else 826 return true; 827 #endif 828 } 829 830 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 831 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 832 { \ 833 return mfspr(bookehv_spr); \ 834 } \ 835 836 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 837 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 838 { \ 839 mtspr(bookehv_spr, val); \ 840 } \ 841 842 #define SHARED_WRAPPER_GET(reg, size) \ 843 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 844 { \ 845 if (kvmppc_shared_big_endian(vcpu)) \ 846 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 847 else \ 848 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 849 } \ 850 851 #define SHARED_WRAPPER_SET(reg, size) \ 852 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 853 { \ 854 if (kvmppc_shared_big_endian(vcpu)) \ 855 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 856 else \ 857 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 858 } \ 859 860 #define SHARED_WRAPPER(reg, size) \ 861 SHARED_WRAPPER_GET(reg, size) \ 862 SHARED_WRAPPER_SET(reg, size) \ 863 864 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 865 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 866 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 867 868 #ifdef CONFIG_KVM_BOOKE_HV 869 870 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 871 SPRNG_WRAPPER(reg, bookehv_spr) \ 872 873 #else 874 875 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 876 SHARED_WRAPPER(reg, size) \ 877 878 #endif 879 880 SHARED_WRAPPER(critical, 64) 881 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 882 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 883 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 884 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 885 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 886 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 887 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 888 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 889 SHARED_WRAPPER_GET(msr, 64) 890 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 891 { 892 if (kvmppc_shared_big_endian(vcpu)) 893 vcpu->arch.shared->msr = cpu_to_be64(val); 894 else 895 vcpu->arch.shared->msr = cpu_to_le64(val); 896 } 897 SHARED_WRAPPER(dsisr, 32) 898 SHARED_WRAPPER(int_pending, 32) 899 SHARED_WRAPPER(sprg4, 64) 900 SHARED_WRAPPER(sprg5, 64) 901 SHARED_WRAPPER(sprg6, 64) 902 SHARED_WRAPPER(sprg7, 64) 903 904 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 905 { 906 if (kvmppc_shared_big_endian(vcpu)) 907 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 908 else 909 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 910 } 911 912 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 913 { 914 if (kvmppc_shared_big_endian(vcpu)) 915 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 916 else 917 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 918 } 919 920 /* 921 * Please call after prepare_to_enter. This function puts the lazy ee and irq 922 * disabled tracking state back to normal mode, without actually enabling 923 * interrupts. 924 */ 925 static inline void kvmppc_fix_ee_before_entry(void) 926 { 927 trace_hardirqs_on(); 928 929 #ifdef CONFIG_PPC64 930 /* 931 * To avoid races, the caller must have gone directly from having 932 * interrupts fully-enabled to hard-disabled. 933 */ 934 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 935 936 /* Only need to enable IRQs by hard enabling them after this */ 937 local_paca->irq_happened = 0; 938 irq_soft_mask_set(IRQS_ENABLED); 939 #endif 940 } 941 942 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 943 { 944 ulong ea; 945 ulong msr_64bit = 0; 946 947 ea = kvmppc_get_gpr(vcpu, rb); 948 if (ra) 949 ea += kvmppc_get_gpr(vcpu, ra); 950 951 #if defined(CONFIG_PPC_BOOK3E_64) 952 msr_64bit = MSR_CM; 953 #elif defined(CONFIG_PPC_BOOK3S_64) 954 msr_64bit = MSR_SF; 955 #endif 956 957 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 958 ea = (uint32_t)ea; 959 960 return ea; 961 } 962 963 extern void xics_wake_cpu(int cpu); 964 965 #endif /* __POWERPC_KVM_PPC_H__ */ 966