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_fetch_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_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 82 unsigned int rt, unsigned int bytes, 83 int is_default_endian, int mmio_sign_extend); 84 extern int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 85 unsigned int rt, unsigned int bytes, int is_default_endian); 86 extern int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 87 unsigned int rs, unsigned int bytes, int is_default_endian); 88 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 89 u64 val, unsigned int bytes, 90 int is_default_endian); 91 extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 92 int rs, unsigned int bytes, 93 int is_default_endian); 94 95 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, 96 enum instruction_fetch_type type, u32 *inst); 97 98 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 99 bool data); 100 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 101 bool data); 102 extern int kvmppc_emulate_instruction(struct kvm_run *run, 103 struct kvm_vcpu *vcpu); 104 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 105 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 106 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 107 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 108 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); 109 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 110 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 111 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 112 113 /* Core-specific hooks */ 114 115 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 116 unsigned int gtlb_idx); 117 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 118 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 119 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 120 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 121 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 122 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 123 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 124 gva_t eaddr); 125 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 126 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 127 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 128 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 129 struct kvmppc_pte *pte); 130 131 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 132 unsigned int id); 133 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 134 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 135 extern int kvmppc_core_check_processor_compat(void); 136 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 137 struct kvm_translation *tr); 138 139 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 140 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 141 142 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 143 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 144 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 145 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu); 146 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu); 147 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu); 148 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 149 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 150 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 151 struct kvm_interrupt *irq); 152 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 153 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 154 ulong esr_flags); 155 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 156 ulong dear_flags, 157 ulong esr_flags); 158 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 159 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 160 ulong esr_flags); 161 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 162 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 163 164 extern int kvmppc_booke_init(void); 165 extern void kvmppc_booke_exit(void); 166 167 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 168 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 169 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 170 171 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); 172 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); 173 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); 174 extern void kvmppc_free_hpt(struct kvm_hpt_info *info); 175 extern void kvmppc_rmap_reset(struct kvm *kvm); 176 extern long kvmppc_prepare_vrma(struct kvm *kvm, 177 struct kvm_userspace_memory_region *mem); 178 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 179 struct kvm_memory_slot *memslot, unsigned long porder); 180 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 181 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd, 182 struct iommu_group *grp); 183 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm, 184 struct iommu_group *grp); 185 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm); 186 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm); 187 extern void kvmppc_setup_partition_table(struct kvm *kvm); 188 189 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 190 struct kvm_create_spapr_tce_64 *args); 191 extern struct kvmppc_spapr_tce_table *kvmppc_find_table( 192 struct kvm *kvm, unsigned long liobn); 193 #define kvmppc_ioba_validate(stt, ioba, npages) \ 194 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \ 195 (stt)->size, (ioba), (npages)) ? \ 196 H_PARAMETER : H_SUCCESS) 197 extern long kvmppc_tce_to_ua(struct kvm *kvm, unsigned long tce, 198 unsigned long *ua, unsigned long **prmap); 199 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt, 200 unsigned long idx, unsigned long tce); 201 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 202 unsigned long ioba, unsigned long tce); 203 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 204 unsigned long liobn, unsigned long ioba, 205 unsigned long tce_list, unsigned long npages); 206 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 207 unsigned long liobn, unsigned long ioba, 208 unsigned long tce_value, unsigned long npages); 209 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 210 unsigned long ioba); 211 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 212 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 213 extern int kvmppc_core_init_vm(struct kvm *kvm); 214 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 215 extern void kvmppc_core_free_memslot(struct kvm *kvm, 216 struct kvm_memory_slot *free, 217 struct kvm_memory_slot *dont); 218 extern int kvmppc_core_create_memslot(struct kvm *kvm, 219 struct kvm_memory_slot *slot, 220 unsigned long npages); 221 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 222 struct kvm_memory_slot *memslot, 223 const struct kvm_userspace_memory_region *mem); 224 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 225 const struct kvm_userspace_memory_region *mem, 226 const struct kvm_memory_slot *old, 227 const struct kvm_memory_slot *new, 228 enum kvm_mr_change change); 229 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 230 struct kvm_ppc_smmu_info *info); 231 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 232 struct kvm_memory_slot *memslot); 233 234 extern int kvmppc_bookehv_init(void); 235 extern void kvmppc_bookehv_exit(void); 236 237 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 238 239 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 240 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, 241 struct kvm_ppc_resize_hpt *rhpt); 242 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, 243 struct kvm_ppc_resize_hpt *rhpt); 244 245 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 246 247 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 248 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 249 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 250 251 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 252 u32 priority); 253 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 254 u32 *priority); 255 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 256 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 257 258 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 259 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 260 261 union kvmppc_one_reg { 262 u32 wval; 263 u64 dval; 264 vector128 vval; 265 u64 vsxval[2]; 266 u32 vsx32val[4]; 267 u16 vsx16val[8]; 268 u8 vsx8val[16]; 269 struct { 270 u64 addr; 271 u64 length; 272 } vpaval; 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 #else 481 static inline void __init kvm_cma_reserve(void) 482 {} 483 484 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 485 {} 486 487 static inline void kvmppc_set_xive_tima(int cpu, 488 unsigned long phys_addr, 489 void __iomem *virt_addr) 490 {} 491 492 static inline u32 kvmppc_get_xics_latch(void) 493 { 494 return 0; 495 } 496 497 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 498 {} 499 500 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 501 { 502 kvm_vcpu_kick(vcpu); 503 } 504 505 static inline bool kvm_hv_mode_active(void) { return false; } 506 507 #endif 508 509 #ifdef CONFIG_KVM_XICS 510 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 511 { 512 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 513 } 514 515 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 516 struct kvm *kvm) 517 { 518 if (kvm && kvm_irq_bypass) 519 return kvm->arch.pimap; 520 return NULL; 521 } 522 523 extern void kvmppc_alloc_host_rm_ops(void); 524 extern void kvmppc_free_host_rm_ops(void); 525 extern void kvmppc_free_pimap(struct kvm *kvm); 526 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 527 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 528 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 529 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 530 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 531 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 532 struct kvm_vcpu *vcpu, u32 cpu); 533 extern void kvmppc_xics_ipi_action(void); 534 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 535 unsigned long host_irq); 536 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 537 unsigned long host_irq); 538 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 539 struct kvmppc_irq_map *irq_map, 540 struct kvmppc_passthru_irqmap *pimap, 541 bool *again); 542 543 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 544 int level, bool line_status); 545 546 extern int h_ipi_redirect; 547 #else 548 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 549 struct kvm *kvm) 550 { return NULL; } 551 static inline void kvmppc_alloc_host_rm_ops(void) {}; 552 static inline void kvmppc_free_host_rm_ops(void) {}; 553 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 554 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 555 { return 0; } 556 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 557 { return 0; } 558 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 559 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 560 { return 0; } 561 #endif 562 563 #ifdef CONFIG_KVM_XIVE 564 /* 565 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 566 * ie. P9 new interrupt controller, while the second "xive" is the legacy 567 * "eXternal Interrupt Vector Entry" which is the configuration of an 568 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 569 * two function consume or produce a legacy "XIVE" state from the 570 * new "XIVE" interrupt controller. 571 */ 572 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 573 u32 priority); 574 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 575 u32 *priority); 576 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 577 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 578 extern void kvmppc_xive_init_module(void); 579 extern void kvmppc_xive_exit_module(void); 580 581 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 582 struct kvm_vcpu *vcpu, u32 cpu); 583 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 584 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 585 struct irq_desc *host_desc); 586 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 587 struct irq_desc *host_desc); 588 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 589 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 590 591 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 592 int level, bool line_status); 593 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 594 #else 595 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 596 u32 priority) { return -1; } 597 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 598 u32 *priority) { return -1; } 599 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 600 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 601 static inline void kvmppc_xive_init_module(void) { } 602 static inline void kvmppc_xive_exit_module(void) { } 603 604 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 605 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 606 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 607 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 608 struct irq_desc *host_desc) { return -ENODEV; } 609 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 610 struct irq_desc *host_desc) { return -ENODEV; } 611 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 612 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 613 614 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 615 int level, bool line_status) { return -ENODEV; } 616 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } 617 #endif /* CONFIG_KVM_XIVE */ 618 619 /* 620 * Prototypes for functions called only from assembler code. 621 * Having prototypes reduces sparse errors. 622 */ 623 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 624 unsigned long ioba, unsigned long tce); 625 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 626 unsigned long liobn, unsigned long ioba, 627 unsigned long tce_list, unsigned long npages); 628 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 629 unsigned long liobn, unsigned long ioba, 630 unsigned long tce_value, unsigned long npages); 631 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 632 unsigned int yield_count); 633 long kvmppc_h_random(struct kvm_vcpu *vcpu); 634 void kvmhv_commence_exit(int trap); 635 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 636 void kvmppc_subcore_enter_guest(void); 637 void kvmppc_subcore_exit_guest(void); 638 long kvmppc_realmode_hmi_handler(void); 639 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 640 long pte_index, unsigned long pteh, unsigned long ptel); 641 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 642 unsigned long pte_index, unsigned long avpn); 643 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 644 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 645 unsigned long pte_index, unsigned long avpn, 646 unsigned long va); 647 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 648 unsigned long pte_index); 649 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 650 unsigned long pte_index); 651 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 652 unsigned long pte_index); 653 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 654 unsigned long slb_v, unsigned int status, bool data); 655 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 656 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 657 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 658 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 659 unsigned long mfrr); 660 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 661 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 662 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 663 664 /* 665 * Host-side operations we want to set up while running in real 666 * mode in the guest operating on the xics. 667 * Currently only VCPU wakeup is supported. 668 */ 669 670 union kvmppc_rm_state { 671 unsigned long raw; 672 struct { 673 u32 in_host; 674 u32 rm_action; 675 }; 676 }; 677 678 struct kvmppc_host_rm_core { 679 union kvmppc_rm_state rm_state; 680 void *rm_data; 681 char pad[112]; 682 }; 683 684 struct kvmppc_host_rm_ops { 685 struct kvmppc_host_rm_core *rm_core; 686 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 687 }; 688 689 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 690 691 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 692 { 693 #ifdef CONFIG_KVM_BOOKE_HV 694 return mfspr(SPRN_GEPR); 695 #elif defined(CONFIG_BOOKE) 696 return vcpu->arch.epr; 697 #else 698 return 0; 699 #endif 700 } 701 702 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 703 { 704 #ifdef CONFIG_KVM_BOOKE_HV 705 mtspr(SPRN_GEPR, epr); 706 #elif defined(CONFIG_BOOKE) 707 vcpu->arch.epr = epr; 708 #endif 709 } 710 711 #ifdef CONFIG_KVM_MPIC 712 713 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 714 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 715 u32 cpu); 716 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 717 718 #else 719 720 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 721 { 722 } 723 724 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 725 struct kvm_vcpu *vcpu, u32 cpu) 726 { 727 return -EINVAL; 728 } 729 730 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 731 struct kvm_vcpu *vcpu) 732 { 733 } 734 735 #endif /* CONFIG_KVM_MPIC */ 736 737 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 738 struct kvm_config_tlb *cfg); 739 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 740 struct kvm_dirty_tlb *cfg); 741 742 long kvmppc_alloc_lpid(void); 743 void kvmppc_claim_lpid(long lpid); 744 void kvmppc_free_lpid(long lpid); 745 void kvmppc_init_lpid(unsigned long nr_lpids); 746 747 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 748 { 749 struct page *page; 750 /* 751 * We can only access pages that the kernel maps 752 * as memory. Bail out for unmapped ones. 753 */ 754 if (!pfn_valid(pfn)) 755 return; 756 757 /* Clear i-cache for new pages */ 758 page = pfn_to_page(pfn); 759 if (!test_bit(PG_arch_1, &page->flags)) { 760 flush_dcache_icache_page(page); 761 set_bit(PG_arch_1, &page->flags); 762 } 763 } 764 765 /* 766 * Shared struct helpers. The shared struct can be little or big endian, 767 * depending on the guest endianness. So expose helpers to all of them. 768 */ 769 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 770 { 771 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 772 /* Only Book3S_64 PR supports bi-endian for now */ 773 return vcpu->arch.shared_big_endian; 774 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 775 /* Book3s_64 HV on little endian is always little endian */ 776 return false; 777 #else 778 return true; 779 #endif 780 } 781 782 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 783 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 784 { \ 785 return mfspr(bookehv_spr); \ 786 } \ 787 788 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 789 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 790 { \ 791 mtspr(bookehv_spr, val); \ 792 } \ 793 794 #define SHARED_WRAPPER_GET(reg, size) \ 795 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 796 { \ 797 if (kvmppc_shared_big_endian(vcpu)) \ 798 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 799 else \ 800 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 801 } \ 802 803 #define SHARED_WRAPPER_SET(reg, size) \ 804 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 805 { \ 806 if (kvmppc_shared_big_endian(vcpu)) \ 807 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 808 else \ 809 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 810 } \ 811 812 #define SHARED_WRAPPER(reg, size) \ 813 SHARED_WRAPPER_GET(reg, size) \ 814 SHARED_WRAPPER_SET(reg, size) \ 815 816 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 817 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 818 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 819 820 #ifdef CONFIG_KVM_BOOKE_HV 821 822 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 823 SPRNG_WRAPPER(reg, bookehv_spr) \ 824 825 #else 826 827 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 828 SHARED_WRAPPER(reg, size) \ 829 830 #endif 831 832 SHARED_WRAPPER(critical, 64) 833 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 834 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 835 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 836 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 837 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 838 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 839 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 840 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 841 SHARED_WRAPPER_GET(msr, 64) 842 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 843 { 844 if (kvmppc_shared_big_endian(vcpu)) 845 vcpu->arch.shared->msr = cpu_to_be64(val); 846 else 847 vcpu->arch.shared->msr = cpu_to_le64(val); 848 } 849 SHARED_WRAPPER(dsisr, 32) 850 SHARED_WRAPPER(int_pending, 32) 851 SHARED_WRAPPER(sprg4, 64) 852 SHARED_WRAPPER(sprg5, 64) 853 SHARED_WRAPPER(sprg6, 64) 854 SHARED_WRAPPER(sprg7, 64) 855 856 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 857 { 858 if (kvmppc_shared_big_endian(vcpu)) 859 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 860 else 861 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 862 } 863 864 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 865 { 866 if (kvmppc_shared_big_endian(vcpu)) 867 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 868 else 869 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 870 } 871 872 /* 873 * Please call after prepare_to_enter. This function puts the lazy ee and irq 874 * disabled tracking state back to normal mode, without actually enabling 875 * interrupts. 876 */ 877 static inline void kvmppc_fix_ee_before_entry(void) 878 { 879 trace_hardirqs_on(); 880 881 #ifdef CONFIG_PPC64 882 /* 883 * To avoid races, the caller must have gone directly from having 884 * interrupts fully-enabled to hard-disabled. 885 */ 886 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 887 888 /* Only need to enable IRQs by hard enabling them after this */ 889 local_paca->irq_happened = 0; 890 irq_soft_mask_set(IRQS_ENABLED); 891 #endif 892 } 893 894 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 895 { 896 ulong ea; 897 ulong msr_64bit = 0; 898 899 ea = kvmppc_get_gpr(vcpu, rb); 900 if (ra) 901 ea += kvmppc_get_gpr(vcpu, ra); 902 903 #if defined(CONFIG_PPC_BOOK3E_64) 904 msr_64bit = MSR_CM; 905 #elif defined(CONFIG_PPC_BOOK3S_64) 906 msr_64bit = MSR_SF; 907 #endif 908 909 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 910 ea = (uint32_t)ea; 911 912 return ea; 913 } 914 915 extern void xics_wake_cpu(int cpu); 916 917 #endif /* __POWERPC_KVM_PPC_H__ */ 918