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 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 }; 273 274 struct kvmppc_ops { 275 struct module *owner; 276 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 277 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 278 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 279 union kvmppc_one_reg *val); 280 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 281 union kvmppc_one_reg *val); 282 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 283 void (*vcpu_put)(struct kvm_vcpu *vcpu); 284 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 285 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 286 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 287 void (*vcpu_free)(struct kvm_vcpu *vcpu); 288 int (*check_requests)(struct kvm_vcpu *vcpu); 289 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 290 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 291 int (*prepare_memory_region)(struct kvm *kvm, 292 struct kvm_memory_slot *memslot, 293 const struct kvm_userspace_memory_region *mem); 294 void (*commit_memory_region)(struct kvm *kvm, 295 const struct kvm_userspace_memory_region *mem, 296 const struct kvm_memory_slot *old, 297 const struct kvm_memory_slot *new); 298 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 299 unsigned long end); 300 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 301 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 302 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 303 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 304 void (*free_memslot)(struct kvm_memory_slot *free, 305 struct kvm_memory_slot *dont); 306 int (*create_memslot)(struct kvm_memory_slot *slot, 307 unsigned long npages); 308 int (*init_vm)(struct kvm *kvm); 309 void (*destroy_vm)(struct kvm *kvm); 310 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 311 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 312 unsigned int inst, int *advance); 313 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 314 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 315 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 316 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 317 unsigned long arg); 318 int (*hcall_implemented)(unsigned long hcall); 319 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 320 struct irq_bypass_producer *); 321 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 322 struct irq_bypass_producer *); 323 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 324 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 325 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode, 326 unsigned long flags); 327 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr); 328 int (*enable_nested)(struct kvm *kvm); 329 }; 330 331 extern struct kvmppc_ops *kvmppc_hv_ops; 332 extern struct kvmppc_ops *kvmppc_pr_ops; 333 334 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 335 enum instruction_fetch_type type, u32 *inst) 336 { 337 int ret = EMULATE_DONE; 338 u32 fetched_inst; 339 340 /* Load the instruction manually if it failed to do so in the 341 * exit path */ 342 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 343 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 344 345 /* Write fetch_failed unswapped if the fetch failed */ 346 if (ret == EMULATE_DONE) 347 fetched_inst = kvmppc_need_byteswap(vcpu) ? 348 swab32(vcpu->arch.last_inst) : 349 vcpu->arch.last_inst; 350 else 351 fetched_inst = vcpu->arch.last_inst; 352 353 *inst = fetched_inst; 354 return ret; 355 } 356 357 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 358 { 359 return kvm->arch.kvm_ops == kvmppc_hv_ops; 360 } 361 362 extern int kvmppc_hwrng_present(void); 363 364 /* 365 * Cuts out inst bits with ordering according to spec. 366 * That means the leftmost bit is zero. All given bits are included. 367 */ 368 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 369 { 370 u32 r; 371 u32 mask; 372 373 BUG_ON(msb > lsb); 374 375 mask = (1 << (lsb - msb + 1)) - 1; 376 r = (inst >> (63 - lsb)) & mask; 377 378 return r; 379 } 380 381 /* 382 * Replaces inst bits with ordering according to spec. 383 */ 384 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 385 { 386 u32 r; 387 u32 mask; 388 389 BUG_ON(msb > lsb); 390 391 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 392 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 393 394 return r; 395 } 396 397 #define one_reg_size(id) \ 398 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 399 400 #define get_reg_val(id, reg) ({ \ 401 union kvmppc_one_reg __u; \ 402 switch (one_reg_size(id)) { \ 403 case 4: __u.wval = (reg); break; \ 404 case 8: __u.dval = (reg); break; \ 405 default: BUG(); \ 406 } \ 407 __u; \ 408 }) 409 410 411 #define set_reg_val(id, val) ({ \ 412 u64 __v; \ 413 switch (one_reg_size(id)) { \ 414 case 4: __v = (val).wval; break; \ 415 case 8: __v = (val).dval; break; \ 416 default: BUG(); \ 417 } \ 418 __v; \ 419 }) 420 421 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 422 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 423 424 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 425 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 426 427 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 428 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 429 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 430 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 431 432 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 433 434 struct openpic; 435 436 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 437 extern void kvm_cma_reserve(void) __init; 438 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 439 { 440 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr; 441 } 442 443 static inline void kvmppc_set_xive_tima(int cpu, 444 unsigned long phys_addr, 445 void __iomem *virt_addr) 446 { 447 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 448 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr; 449 } 450 451 static inline u32 kvmppc_get_xics_latch(void) 452 { 453 u32 xirr; 454 455 xirr = get_paca()->kvm_hstate.saved_xirr; 456 get_paca()->kvm_hstate.saved_xirr = 0; 457 return xirr; 458 } 459 460 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 461 { 462 paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi; 463 } 464 465 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 466 { 467 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 468 } 469 470 extern void kvm_hv_vm_activated(void); 471 extern void kvm_hv_vm_deactivated(void); 472 extern bool kvm_hv_mode_active(void); 473 474 #else 475 static inline void __init kvm_cma_reserve(void) 476 {} 477 478 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 479 {} 480 481 static inline void kvmppc_set_xive_tima(int cpu, 482 unsigned long phys_addr, 483 void __iomem *virt_addr) 484 {} 485 486 static inline u32 kvmppc_get_xics_latch(void) 487 { 488 return 0; 489 } 490 491 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 492 {} 493 494 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 495 { 496 kvm_vcpu_kick(vcpu); 497 } 498 499 static inline bool kvm_hv_mode_active(void) { return false; } 500 501 #endif 502 503 #ifdef CONFIG_KVM_XICS 504 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 505 { 506 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 507 } 508 509 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 510 struct kvm *kvm) 511 { 512 if (kvm && kvm_irq_bypass) 513 return kvm->arch.pimap; 514 return NULL; 515 } 516 517 extern void kvmppc_alloc_host_rm_ops(void); 518 extern void kvmppc_free_host_rm_ops(void); 519 extern void kvmppc_free_pimap(struct kvm *kvm); 520 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 521 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 522 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 523 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 524 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 525 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 526 struct kvm_vcpu *vcpu, u32 cpu); 527 extern void kvmppc_xics_ipi_action(void); 528 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 529 unsigned long host_irq); 530 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 531 unsigned long host_irq); 532 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 533 struct kvmppc_irq_map *irq_map, 534 struct kvmppc_passthru_irqmap *pimap, 535 bool *again); 536 537 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 538 int level, bool line_status); 539 540 extern int h_ipi_redirect; 541 #else 542 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 543 struct kvm *kvm) 544 { return NULL; } 545 static inline void kvmppc_alloc_host_rm_ops(void) {}; 546 static inline void kvmppc_free_host_rm_ops(void) {}; 547 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 548 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 549 { return 0; } 550 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 551 { return 0; } 552 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 553 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 554 { return 0; } 555 #endif 556 557 #ifdef CONFIG_KVM_XIVE 558 /* 559 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 560 * ie. P9 new interrupt controller, while the second "xive" is the legacy 561 * "eXternal Interrupt Vector Entry" which is the configuration of an 562 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 563 * two function consume or produce a legacy "XIVE" state from the 564 * new "XIVE" interrupt controller. 565 */ 566 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 567 u32 priority); 568 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 569 u32 *priority); 570 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 571 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 572 extern void kvmppc_xive_init_module(void); 573 extern void kvmppc_xive_exit_module(void); 574 575 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 576 struct kvm_vcpu *vcpu, u32 cpu); 577 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 578 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 579 struct irq_desc *host_desc); 580 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 581 struct irq_desc *host_desc); 582 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 583 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 584 585 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 586 int level, bool line_status); 587 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 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 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } 611 #endif /* CONFIG_KVM_XIVE */ 612 613 /* 614 * Prototypes for functions called only from assembler code. 615 * Having prototypes reduces sparse errors. 616 */ 617 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 618 unsigned long ioba, unsigned long tce); 619 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 620 unsigned long liobn, unsigned long ioba, 621 unsigned long tce_list, unsigned long npages); 622 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 623 unsigned long liobn, unsigned long ioba, 624 unsigned long tce_value, unsigned long npages); 625 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 626 unsigned int yield_count); 627 long kvmppc_h_random(struct kvm_vcpu *vcpu); 628 void kvmhv_commence_exit(int trap); 629 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 630 void kvmppc_subcore_enter_guest(void); 631 void kvmppc_subcore_exit_guest(void); 632 long kvmppc_realmode_hmi_handler(void); 633 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 634 long pte_index, unsigned long pteh, unsigned long ptel); 635 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 636 unsigned long pte_index, unsigned long avpn); 637 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 638 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 639 unsigned long pte_index, unsigned long avpn, 640 unsigned long va); 641 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 642 unsigned long pte_index); 643 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 644 unsigned long pte_index); 645 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 646 unsigned long pte_index); 647 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 648 unsigned long slb_v, unsigned int status, bool data); 649 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 650 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 651 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 652 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 653 unsigned long mfrr); 654 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 655 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 656 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 657 658 /* 659 * Host-side operations we want to set up while running in real 660 * mode in the guest operating on the xics. 661 * Currently only VCPU wakeup is supported. 662 */ 663 664 union kvmppc_rm_state { 665 unsigned long raw; 666 struct { 667 u32 in_host; 668 u32 rm_action; 669 }; 670 }; 671 672 struct kvmppc_host_rm_core { 673 union kvmppc_rm_state rm_state; 674 void *rm_data; 675 char pad[112]; 676 }; 677 678 struct kvmppc_host_rm_ops { 679 struct kvmppc_host_rm_core *rm_core; 680 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 681 }; 682 683 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 684 685 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 686 { 687 #ifdef CONFIG_KVM_BOOKE_HV 688 return mfspr(SPRN_GEPR); 689 #elif defined(CONFIG_BOOKE) 690 return vcpu->arch.epr; 691 #else 692 return 0; 693 #endif 694 } 695 696 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 697 { 698 #ifdef CONFIG_KVM_BOOKE_HV 699 mtspr(SPRN_GEPR, epr); 700 #elif defined(CONFIG_BOOKE) 701 vcpu->arch.epr = epr; 702 #endif 703 } 704 705 #ifdef CONFIG_KVM_MPIC 706 707 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 708 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 709 u32 cpu); 710 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 711 712 #else 713 714 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 715 { 716 } 717 718 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 719 struct kvm_vcpu *vcpu, u32 cpu) 720 { 721 return -EINVAL; 722 } 723 724 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 725 struct kvm_vcpu *vcpu) 726 { 727 } 728 729 #endif /* CONFIG_KVM_MPIC */ 730 731 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 732 struct kvm_config_tlb *cfg); 733 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 734 struct kvm_dirty_tlb *cfg); 735 736 long kvmppc_alloc_lpid(void); 737 void kvmppc_claim_lpid(long lpid); 738 void kvmppc_free_lpid(long lpid); 739 void kvmppc_init_lpid(unsigned long nr_lpids); 740 741 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 742 { 743 struct page *page; 744 /* 745 * We can only access pages that the kernel maps 746 * as memory. Bail out for unmapped ones. 747 */ 748 if (!pfn_valid(pfn)) 749 return; 750 751 /* Clear i-cache for new pages */ 752 page = pfn_to_page(pfn); 753 if (!test_bit(PG_arch_1, &page->flags)) { 754 flush_dcache_icache_page(page); 755 set_bit(PG_arch_1, &page->flags); 756 } 757 } 758 759 /* 760 * Shared struct helpers. The shared struct can be little or big endian, 761 * depending on the guest endianness. So expose helpers to all of them. 762 */ 763 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 764 { 765 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 766 /* Only Book3S_64 PR supports bi-endian for now */ 767 return vcpu->arch.shared_big_endian; 768 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 769 /* Book3s_64 HV on little endian is always little endian */ 770 return false; 771 #else 772 return true; 773 #endif 774 } 775 776 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 777 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 778 { \ 779 return mfspr(bookehv_spr); \ 780 } \ 781 782 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 783 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 784 { \ 785 mtspr(bookehv_spr, val); \ 786 } \ 787 788 #define SHARED_WRAPPER_GET(reg, size) \ 789 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 790 { \ 791 if (kvmppc_shared_big_endian(vcpu)) \ 792 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 793 else \ 794 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 795 } \ 796 797 #define SHARED_WRAPPER_SET(reg, size) \ 798 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 799 { \ 800 if (kvmppc_shared_big_endian(vcpu)) \ 801 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 802 else \ 803 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 804 } \ 805 806 #define SHARED_WRAPPER(reg, size) \ 807 SHARED_WRAPPER_GET(reg, size) \ 808 SHARED_WRAPPER_SET(reg, size) \ 809 810 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 811 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 812 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 813 814 #ifdef CONFIG_KVM_BOOKE_HV 815 816 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 817 SPRNG_WRAPPER(reg, bookehv_spr) \ 818 819 #else 820 821 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 822 SHARED_WRAPPER(reg, size) \ 823 824 #endif 825 826 SHARED_WRAPPER(critical, 64) 827 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 828 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 829 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 830 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 831 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 832 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 833 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 834 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 835 SHARED_WRAPPER_GET(msr, 64) 836 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 837 { 838 if (kvmppc_shared_big_endian(vcpu)) 839 vcpu->arch.shared->msr = cpu_to_be64(val); 840 else 841 vcpu->arch.shared->msr = cpu_to_le64(val); 842 } 843 SHARED_WRAPPER(dsisr, 32) 844 SHARED_WRAPPER(int_pending, 32) 845 SHARED_WRAPPER(sprg4, 64) 846 SHARED_WRAPPER(sprg5, 64) 847 SHARED_WRAPPER(sprg6, 64) 848 SHARED_WRAPPER(sprg7, 64) 849 850 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 851 { 852 if (kvmppc_shared_big_endian(vcpu)) 853 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 854 else 855 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 856 } 857 858 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 859 { 860 if (kvmppc_shared_big_endian(vcpu)) 861 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 862 else 863 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 864 } 865 866 /* 867 * Please call after prepare_to_enter. This function puts the lazy ee and irq 868 * disabled tracking state back to normal mode, without actually enabling 869 * interrupts. 870 */ 871 static inline void kvmppc_fix_ee_before_entry(void) 872 { 873 trace_hardirqs_on(); 874 875 #ifdef CONFIG_PPC64 876 /* 877 * To avoid races, the caller must have gone directly from having 878 * interrupts fully-enabled to hard-disabled. 879 */ 880 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 881 882 /* Only need to enable IRQs by hard enabling them after this */ 883 local_paca->irq_happened = 0; 884 irq_soft_mask_set(IRQS_ENABLED); 885 #endif 886 } 887 888 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 889 { 890 ulong ea; 891 ulong msr_64bit = 0; 892 893 ea = kvmppc_get_gpr(vcpu, rb); 894 if (ra) 895 ea += kvmppc_get_gpr(vcpu, ra); 896 897 #if defined(CONFIG_PPC_BOOK3E_64) 898 msr_64bit = MSR_CM; 899 #elif defined(CONFIG_PPC_BOOK3S_64) 900 msr_64bit = MSR_SF; 901 #endif 902 903 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 904 ea = (uint32_t)ea; 905 906 return ea; 907 } 908 909 extern void xics_wake_cpu(int cpu); 910 911 #endif /* __POWERPC_KVM_PPC_H__ */ 912