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_validate(struct kvmppc_spapr_tce_table *tt, 198 unsigned long tce); 199 extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa, 200 unsigned long *ua, unsigned long **prmap); 201 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt, 202 unsigned long idx, unsigned long tce); 203 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 204 unsigned long ioba, unsigned long tce); 205 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 206 unsigned long liobn, unsigned long ioba, 207 unsigned long tce_list, unsigned long npages); 208 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 209 unsigned long liobn, unsigned long ioba, 210 unsigned long tce_value, unsigned long npages); 211 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 212 unsigned long ioba); 213 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 214 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 215 extern int kvmppc_core_init_vm(struct kvm *kvm); 216 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 217 extern void kvmppc_core_free_memslot(struct kvm *kvm, 218 struct kvm_memory_slot *free, 219 struct kvm_memory_slot *dont); 220 extern int kvmppc_core_create_memslot(struct kvm *kvm, 221 struct kvm_memory_slot *slot, 222 unsigned long npages); 223 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 224 struct kvm_memory_slot *memslot, 225 const struct kvm_userspace_memory_region *mem); 226 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 227 const struct kvm_userspace_memory_region *mem, 228 const struct kvm_memory_slot *old, 229 const struct kvm_memory_slot *new); 230 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 231 struct kvm_ppc_smmu_info *info); 232 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 233 struct kvm_memory_slot *memslot); 234 235 extern int kvmppc_bookehv_init(void); 236 extern void kvmppc_bookehv_exit(void); 237 238 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 239 240 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 241 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, 242 struct kvm_ppc_resize_hpt *rhpt); 243 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, 244 struct kvm_ppc_resize_hpt *rhpt); 245 246 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 247 248 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 249 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 250 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 251 252 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 253 u32 priority); 254 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 255 u32 *priority); 256 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 257 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 258 259 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 260 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 261 262 union kvmppc_one_reg { 263 u32 wval; 264 u64 dval; 265 vector128 vval; 266 u64 vsxval[2]; 267 u32 vsx32val[4]; 268 u16 vsx16val[8]; 269 u8 vsx8val[16]; 270 struct { 271 u64 addr; 272 u64 length; 273 } vpaval; 274 }; 275 276 struct kvmppc_ops { 277 struct module *owner; 278 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 279 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 280 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 281 union kvmppc_one_reg *val); 282 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 283 union kvmppc_one_reg *val); 284 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 285 void (*vcpu_put)(struct kvm_vcpu *vcpu); 286 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 287 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 288 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 289 void (*vcpu_free)(struct kvm_vcpu *vcpu); 290 int (*check_requests)(struct kvm_vcpu *vcpu); 291 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 292 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 293 int (*prepare_memory_region)(struct kvm *kvm, 294 struct kvm_memory_slot *memslot, 295 const struct kvm_userspace_memory_region *mem); 296 void (*commit_memory_region)(struct kvm *kvm, 297 const struct kvm_userspace_memory_region *mem, 298 const struct kvm_memory_slot *old, 299 const struct kvm_memory_slot *new); 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 }; 331 332 extern struct kvmppc_ops *kvmppc_hv_ops; 333 extern struct kvmppc_ops *kvmppc_pr_ops; 334 335 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 336 enum instruction_fetch_type type, u32 *inst) 337 { 338 int ret = EMULATE_DONE; 339 u32 fetched_inst; 340 341 /* Load the instruction manually if it failed to do so in the 342 * exit path */ 343 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 344 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 345 346 /* Write fetch_failed unswapped if the fetch failed */ 347 if (ret == EMULATE_DONE) 348 fetched_inst = kvmppc_need_byteswap(vcpu) ? 349 swab32(vcpu->arch.last_inst) : 350 vcpu->arch.last_inst; 351 else 352 fetched_inst = vcpu->arch.last_inst; 353 354 *inst = fetched_inst; 355 return ret; 356 } 357 358 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 359 { 360 return kvm->arch.kvm_ops == kvmppc_hv_ops; 361 } 362 363 extern int kvmppc_hwrng_present(void); 364 365 /* 366 * Cuts out inst bits with ordering according to spec. 367 * That means the leftmost bit is zero. All given bits are included. 368 */ 369 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 370 { 371 u32 r; 372 u32 mask; 373 374 BUG_ON(msb > lsb); 375 376 mask = (1 << (lsb - msb + 1)) - 1; 377 r = (inst >> (63 - lsb)) & mask; 378 379 return r; 380 } 381 382 /* 383 * Replaces inst bits with ordering according to spec. 384 */ 385 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 386 { 387 u32 r; 388 u32 mask; 389 390 BUG_ON(msb > lsb); 391 392 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 393 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 394 395 return r; 396 } 397 398 #define one_reg_size(id) \ 399 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 400 401 #define get_reg_val(id, reg) ({ \ 402 union kvmppc_one_reg __u; \ 403 switch (one_reg_size(id)) { \ 404 case 4: __u.wval = (reg); break; \ 405 case 8: __u.dval = (reg); break; \ 406 default: BUG(); \ 407 } \ 408 __u; \ 409 }) 410 411 412 #define set_reg_val(id, val) ({ \ 413 u64 __v; \ 414 switch (one_reg_size(id)) { \ 415 case 4: __v = (val).wval; break; \ 416 case 8: __v = (val).dval; break; \ 417 default: BUG(); \ 418 } \ 419 __v; \ 420 }) 421 422 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 423 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 424 425 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 426 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 427 428 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 429 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 430 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 431 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 432 433 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 434 435 struct openpic; 436 437 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 438 extern void kvm_cma_reserve(void) __init; 439 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 440 { 441 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr; 442 } 443 444 static inline void kvmppc_set_xive_tima(int cpu, 445 unsigned long phys_addr, 446 void __iomem *virt_addr) 447 { 448 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 449 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr; 450 } 451 452 static inline u32 kvmppc_get_xics_latch(void) 453 { 454 u32 xirr; 455 456 xirr = get_paca()->kvm_hstate.saved_xirr; 457 get_paca()->kvm_hstate.saved_xirr = 0; 458 return xirr; 459 } 460 461 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 462 { 463 paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi; 464 } 465 466 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 467 { 468 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 469 } 470 471 extern void kvm_hv_vm_activated(void); 472 extern void kvm_hv_vm_deactivated(void); 473 extern bool kvm_hv_mode_active(void); 474 475 #else 476 static inline void __init kvm_cma_reserve(void) 477 {} 478 479 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 480 {} 481 482 static inline void kvmppc_set_xive_tima(int cpu, 483 unsigned long phys_addr, 484 void __iomem *virt_addr) 485 {} 486 487 static inline u32 kvmppc_get_xics_latch(void) 488 { 489 return 0; 490 } 491 492 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 493 {} 494 495 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 496 { 497 kvm_vcpu_kick(vcpu); 498 } 499 500 static inline bool kvm_hv_mode_active(void) { return false; } 501 502 #endif 503 504 #ifdef CONFIG_KVM_XICS 505 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 506 { 507 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 508 } 509 510 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 511 struct kvm *kvm) 512 { 513 if (kvm && kvm_irq_bypass) 514 return kvm->arch.pimap; 515 return NULL; 516 } 517 518 extern void kvmppc_alloc_host_rm_ops(void); 519 extern void kvmppc_free_host_rm_ops(void); 520 extern void kvmppc_free_pimap(struct kvm *kvm); 521 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 522 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 523 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 524 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 525 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 526 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 527 struct kvm_vcpu *vcpu, u32 cpu); 528 extern void kvmppc_xics_ipi_action(void); 529 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 530 unsigned long host_irq); 531 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 532 unsigned long host_irq); 533 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 534 struct kvmppc_irq_map *irq_map, 535 struct kvmppc_passthru_irqmap *pimap, 536 bool *again); 537 538 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 539 int level, bool line_status); 540 541 extern int h_ipi_redirect; 542 #else 543 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 544 struct kvm *kvm) 545 { return NULL; } 546 static inline void kvmppc_alloc_host_rm_ops(void) {}; 547 static inline void kvmppc_free_host_rm_ops(void) {}; 548 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 549 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 550 { return 0; } 551 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 552 { return 0; } 553 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 554 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 555 { return 0; } 556 #endif 557 558 #ifdef CONFIG_KVM_XIVE 559 /* 560 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 561 * ie. P9 new interrupt controller, while the second "xive" is the legacy 562 * "eXternal Interrupt Vector Entry" which is the configuration of an 563 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 564 * two function consume or produce a legacy "XIVE" state from the 565 * new "XIVE" interrupt controller. 566 */ 567 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 568 u32 priority); 569 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 570 u32 *priority); 571 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 572 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 573 extern void kvmppc_xive_init_module(void); 574 extern void kvmppc_xive_exit_module(void); 575 576 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 577 struct kvm_vcpu *vcpu, u32 cpu); 578 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 579 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 580 struct irq_desc *host_desc); 581 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 582 struct irq_desc *host_desc); 583 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 584 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 585 586 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 587 int level, bool line_status); 588 #else 589 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 590 u32 priority) { return -1; } 591 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 592 u32 *priority) { return -1; } 593 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 594 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 595 static inline void kvmppc_xive_init_module(void) { } 596 static inline void kvmppc_xive_exit_module(void) { } 597 598 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 599 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 600 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 601 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 602 struct irq_desc *host_desc) { return -ENODEV; } 603 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 604 struct irq_desc *host_desc) { return -ENODEV; } 605 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 606 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 607 608 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 609 int level, bool line_status) { return -ENODEV; } 610 #endif /* CONFIG_KVM_XIVE */ 611 612 /* 613 * Prototypes for functions called only from assembler code. 614 * Having prototypes reduces sparse errors. 615 */ 616 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 617 unsigned long ioba, unsigned long tce); 618 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 619 unsigned long liobn, unsigned long ioba, 620 unsigned long tce_list, unsigned long npages); 621 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 622 unsigned long liobn, unsigned long ioba, 623 unsigned long tce_value, unsigned long npages); 624 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 625 unsigned int yield_count); 626 long kvmppc_h_random(struct kvm_vcpu *vcpu); 627 void kvmhv_commence_exit(int trap); 628 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 629 void kvmppc_subcore_enter_guest(void); 630 void kvmppc_subcore_exit_guest(void); 631 long kvmppc_realmode_hmi_handler(void); 632 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 633 long pte_index, unsigned long pteh, unsigned long ptel); 634 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 635 unsigned long pte_index, unsigned long avpn); 636 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 637 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 638 unsigned long pte_index, unsigned long avpn, 639 unsigned long va); 640 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 641 unsigned long pte_index); 642 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 643 unsigned long pte_index); 644 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 645 unsigned long pte_index); 646 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 647 unsigned long slb_v, unsigned int status, bool data); 648 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 649 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 650 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 651 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 652 unsigned long mfrr); 653 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 654 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 655 656 /* 657 * Host-side operations we want to set up while running in real 658 * mode in the guest operating on the xics. 659 * Currently only VCPU wakeup is supported. 660 */ 661 662 union kvmppc_rm_state { 663 unsigned long raw; 664 struct { 665 u32 in_host; 666 u32 rm_action; 667 }; 668 }; 669 670 struct kvmppc_host_rm_core { 671 union kvmppc_rm_state rm_state; 672 void *rm_data; 673 char pad[112]; 674 }; 675 676 struct kvmppc_host_rm_ops { 677 struct kvmppc_host_rm_core *rm_core; 678 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 679 }; 680 681 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 682 683 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 684 { 685 #ifdef CONFIG_KVM_BOOKE_HV 686 return mfspr(SPRN_GEPR); 687 #elif defined(CONFIG_BOOKE) 688 return vcpu->arch.epr; 689 #else 690 return 0; 691 #endif 692 } 693 694 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 695 { 696 #ifdef CONFIG_KVM_BOOKE_HV 697 mtspr(SPRN_GEPR, epr); 698 #elif defined(CONFIG_BOOKE) 699 vcpu->arch.epr = epr; 700 #endif 701 } 702 703 #ifdef CONFIG_KVM_MPIC 704 705 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 706 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 707 u32 cpu); 708 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 709 710 #else 711 712 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 713 { 714 } 715 716 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 717 struct kvm_vcpu *vcpu, u32 cpu) 718 { 719 return -EINVAL; 720 } 721 722 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 723 struct kvm_vcpu *vcpu) 724 { 725 } 726 727 #endif /* CONFIG_KVM_MPIC */ 728 729 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 730 struct kvm_config_tlb *cfg); 731 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 732 struct kvm_dirty_tlb *cfg); 733 734 long kvmppc_alloc_lpid(void); 735 void kvmppc_claim_lpid(long lpid); 736 void kvmppc_free_lpid(long lpid); 737 void kvmppc_init_lpid(unsigned long nr_lpids); 738 739 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 740 { 741 struct page *page; 742 /* 743 * We can only access pages that the kernel maps 744 * as memory. Bail out for unmapped ones. 745 */ 746 if (!pfn_valid(pfn)) 747 return; 748 749 /* Clear i-cache for new pages */ 750 page = pfn_to_page(pfn); 751 if (!test_bit(PG_arch_1, &page->flags)) { 752 flush_dcache_icache_page(page); 753 set_bit(PG_arch_1, &page->flags); 754 } 755 } 756 757 /* 758 * Shared struct helpers. The shared struct can be little or big endian, 759 * depending on the guest endianness. So expose helpers to all of them. 760 */ 761 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 762 { 763 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 764 /* Only Book3S_64 PR supports bi-endian for now */ 765 return vcpu->arch.shared_big_endian; 766 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 767 /* Book3s_64 HV on little endian is always little endian */ 768 return false; 769 #else 770 return true; 771 #endif 772 } 773 774 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 775 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 776 { \ 777 return mfspr(bookehv_spr); \ 778 } \ 779 780 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 781 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 782 { \ 783 mtspr(bookehv_spr, val); \ 784 } \ 785 786 #define SHARED_WRAPPER_GET(reg, size) \ 787 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 788 { \ 789 if (kvmppc_shared_big_endian(vcpu)) \ 790 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 791 else \ 792 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 793 } \ 794 795 #define SHARED_WRAPPER_SET(reg, size) \ 796 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 797 { \ 798 if (kvmppc_shared_big_endian(vcpu)) \ 799 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 800 else \ 801 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 802 } \ 803 804 #define SHARED_WRAPPER(reg, size) \ 805 SHARED_WRAPPER_GET(reg, size) \ 806 SHARED_WRAPPER_SET(reg, size) \ 807 808 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 809 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 810 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 811 812 #ifdef CONFIG_KVM_BOOKE_HV 813 814 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 815 SPRNG_WRAPPER(reg, bookehv_spr) \ 816 817 #else 818 819 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 820 SHARED_WRAPPER(reg, size) \ 821 822 #endif 823 824 SHARED_WRAPPER(critical, 64) 825 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 826 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 827 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 828 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 829 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 830 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 831 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 832 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 833 SHARED_WRAPPER_GET(msr, 64) 834 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 835 { 836 if (kvmppc_shared_big_endian(vcpu)) 837 vcpu->arch.shared->msr = cpu_to_be64(val); 838 else 839 vcpu->arch.shared->msr = cpu_to_le64(val); 840 } 841 SHARED_WRAPPER(dsisr, 32) 842 SHARED_WRAPPER(int_pending, 32) 843 SHARED_WRAPPER(sprg4, 64) 844 SHARED_WRAPPER(sprg5, 64) 845 SHARED_WRAPPER(sprg6, 64) 846 SHARED_WRAPPER(sprg7, 64) 847 848 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 849 { 850 if (kvmppc_shared_big_endian(vcpu)) 851 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 852 else 853 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 854 } 855 856 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 857 { 858 if (kvmppc_shared_big_endian(vcpu)) 859 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 860 else 861 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 862 } 863 864 /* 865 * Please call after prepare_to_enter. This function puts the lazy ee and irq 866 * disabled tracking state back to normal mode, without actually enabling 867 * interrupts. 868 */ 869 static inline void kvmppc_fix_ee_before_entry(void) 870 { 871 trace_hardirqs_on(); 872 873 #ifdef CONFIG_PPC64 874 /* 875 * To avoid races, the caller must have gone directly from having 876 * interrupts fully-enabled to hard-disabled. 877 */ 878 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 879 880 /* Only need to enable IRQs by hard enabling them after this */ 881 local_paca->irq_happened = 0; 882 irq_soft_mask_set(IRQS_ENABLED); 883 #endif 884 } 885 886 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 887 { 888 ulong ea; 889 ulong msr_64bit = 0; 890 891 ea = kvmppc_get_gpr(vcpu, rb); 892 if (ra) 893 ea += kvmppc_get_gpr(vcpu, ra); 894 895 #if defined(CONFIG_PPC_BOOK3E_64) 896 msr_64bit = MSR_CM; 897 #elif defined(CONFIG_PPC_BOOK3S_64) 898 msr_64bit = MSR_SF; 899 #endif 900 901 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 902 ea = (uint32_t)ea; 903 904 return ea; 905 } 906 907 extern void xics_wake_cpu(int cpu); 908 909 #endif /* __POWERPC_KVM_PPC_H__ */ 910