1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License, version 2, as 4 * published by the Free Software Foundation. 5 * 6 * This program is distributed in the hope that it will be useful, 7 * but WITHOUT ANY WARRANTY; without even the implied warranty of 8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9 * GNU General Public License for more details. 10 * 11 * You should have received a copy of the GNU General Public License 12 * along with this program; if not, write to the Free Software 13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 14 * 15 * Copyright IBM Corp. 2008 16 * 17 * Authors: Hollis Blanchard <hollisb@us.ibm.com> 18 */ 19 20 #ifndef __POWERPC_KVM_PPC_H__ 21 #define __POWERPC_KVM_PPC_H__ 22 23 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header 24 * dependencies. */ 25 26 #include <linux/mutex.h> 27 #include <linux/timer.h> 28 #include <linux/types.h> 29 #include <linux/kvm_types.h> 30 #include <linux/kvm_host.h> 31 #include <linux/bug.h> 32 #ifdef CONFIG_PPC_BOOK3S 33 #include <asm/kvm_book3s.h> 34 #else 35 #include <asm/kvm_booke.h> 36 #endif 37 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 38 #include <asm/paca.h> 39 #endif 40 41 /* 42 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction 43 * for supporting software breakpoint. 44 */ 45 #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00 46 47 enum emulation_result { 48 EMULATE_DONE, /* no further processing */ 49 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 50 EMULATE_FAIL, /* can't emulate this instruction */ 51 EMULATE_AGAIN, /* something went wrong. go again */ 52 EMULATE_EXIT_USER, /* emulation requires exit to user-space */ 53 }; 54 55 enum instruction_type { 56 INST_GENERIC, 57 INST_SC, /* system call */ 58 }; 59 60 enum xlate_instdata { 61 XLATE_INST, /* translate instruction address */ 62 XLATE_DATA /* translate data address */ 63 }; 64 65 enum xlate_readwrite { 66 XLATE_READ, /* check for read permissions */ 67 XLATE_WRITE /* check for write permissions */ 68 }; 69 70 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 71 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 72 extern void kvmppc_handler_highmem(void); 73 74 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 75 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 76 unsigned int rt, unsigned int bytes, 77 int is_default_endian); 78 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 79 unsigned int rt, unsigned int bytes, 80 int is_default_endian); 81 extern int kvmppc_handle_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_load128_by2x64(struct kvm_run *run, 85 struct kvm_vcpu *vcpu, unsigned int rt, int is_default_endian); 86 extern int kvmppc_handle_store128_by2x64(struct kvm_run *run, 87 struct kvm_vcpu *vcpu, unsigned int rs, 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_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 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)(struct kvm *kvm, unsigned long hva); 299 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 300 unsigned long end); 301 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 302 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 303 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 304 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 305 void (*free_memslot)(struct kvm_memory_slot *free, 306 struct kvm_memory_slot *dont); 307 int (*create_memslot)(struct kvm_memory_slot *slot, 308 unsigned long npages); 309 int (*init_vm)(struct kvm *kvm); 310 void (*destroy_vm)(struct kvm *kvm); 311 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 312 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 313 unsigned int inst, int *advance); 314 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 315 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 316 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 317 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 318 unsigned long arg); 319 int (*hcall_implemented)(unsigned long hcall); 320 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 321 struct irq_bypass_producer *); 322 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 323 struct irq_bypass_producer *); 324 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 325 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 326 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode, 327 unsigned long flags); 328 }; 329 330 extern struct kvmppc_ops *kvmppc_hv_ops; 331 extern struct kvmppc_ops *kvmppc_pr_ops; 332 333 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 334 enum instruction_type type, u32 *inst) 335 { 336 int ret = EMULATE_DONE; 337 u32 fetched_inst; 338 339 /* Load the instruction manually if it failed to do so in the 340 * exit path */ 341 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 342 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 343 344 /* Write fetch_failed unswapped if the fetch failed */ 345 if (ret == EMULATE_DONE) 346 fetched_inst = kvmppc_need_byteswap(vcpu) ? 347 swab32(vcpu->arch.last_inst) : 348 vcpu->arch.last_inst; 349 else 350 fetched_inst = vcpu->arch.last_inst; 351 352 *inst = fetched_inst; 353 return ret; 354 } 355 356 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 357 { 358 return kvm->arch.kvm_ops == kvmppc_hv_ops; 359 } 360 361 extern int kvmppc_hwrng_present(void); 362 363 /* 364 * Cuts out inst bits with ordering according to spec. 365 * That means the leftmost bit is zero. All given bits are included. 366 */ 367 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 368 { 369 u32 r; 370 u32 mask; 371 372 BUG_ON(msb > lsb); 373 374 mask = (1 << (lsb - msb + 1)) - 1; 375 r = (inst >> (63 - lsb)) & mask; 376 377 return r; 378 } 379 380 /* 381 * Replaces inst bits with ordering according to spec. 382 */ 383 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 384 { 385 u32 r; 386 u32 mask; 387 388 BUG_ON(msb > lsb); 389 390 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 391 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 392 393 return r; 394 } 395 396 #define one_reg_size(id) \ 397 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 398 399 #define get_reg_val(id, reg) ({ \ 400 union kvmppc_one_reg __u; \ 401 switch (one_reg_size(id)) { \ 402 case 4: __u.wval = (reg); break; \ 403 case 8: __u.dval = (reg); break; \ 404 default: BUG(); \ 405 } \ 406 __u; \ 407 }) 408 409 410 #define set_reg_val(id, val) ({ \ 411 u64 __v; \ 412 switch (one_reg_size(id)) { \ 413 case 4: __v = (val).wval; break; \ 414 case 8: __v = (val).dval; break; \ 415 default: BUG(); \ 416 } \ 417 __v; \ 418 }) 419 420 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 421 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 422 423 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 424 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 425 426 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 427 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 428 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 429 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 430 431 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 432 433 struct openpic; 434 435 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 436 extern void kvm_cma_reserve(void) __init; 437 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 438 { 439 paca[cpu].kvm_hstate.xics_phys = (void __iomem *)addr; 440 } 441 442 static inline void kvmppc_set_xive_tima(int cpu, 443 unsigned long phys_addr, 444 void __iomem *virt_addr) 445 { 446 paca[cpu].kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 447 paca[cpu].kvm_hstate.xive_tima_virt = virt_addr; 448 } 449 450 static inline u32 kvmppc_get_xics_latch(void) 451 { 452 u32 xirr; 453 454 xirr = get_paca()->kvm_hstate.saved_xirr; 455 get_paca()->kvm_hstate.saved_xirr = 0; 456 return xirr; 457 } 458 459 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 460 { 461 paca[cpu].kvm_hstate.host_ipi = host_ipi; 462 } 463 464 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 465 { 466 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 467 } 468 469 extern void kvm_hv_vm_activated(void); 470 extern void kvm_hv_vm_deactivated(void); 471 extern bool kvm_hv_mode_active(void); 472 473 #else 474 static inline void __init kvm_cma_reserve(void) 475 {} 476 477 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 478 {} 479 480 static inline void kvmppc_set_xive_tima(int cpu, 481 unsigned long phys_addr, 482 void __iomem *virt_addr) 483 {} 484 485 static inline u32 kvmppc_get_xics_latch(void) 486 { 487 return 0; 488 } 489 490 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 491 {} 492 493 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 494 { 495 kvm_vcpu_kick(vcpu); 496 } 497 498 static inline bool kvm_hv_mode_active(void) { return false; } 499 500 #endif 501 502 #ifdef CONFIG_KVM_XICS 503 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 504 { 505 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 506 } 507 508 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 509 struct kvm *kvm) 510 { 511 if (kvm && kvm_irq_bypass) 512 return kvm->arch.pimap; 513 return NULL; 514 } 515 516 extern void kvmppc_alloc_host_rm_ops(void); 517 extern void kvmppc_free_host_rm_ops(void); 518 extern void kvmppc_free_pimap(struct kvm *kvm); 519 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 520 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 521 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 522 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 523 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 524 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 525 struct kvm_vcpu *vcpu, u32 cpu); 526 extern void kvmppc_xics_ipi_action(void); 527 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 528 unsigned long host_irq); 529 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 530 unsigned long host_irq); 531 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 532 struct kvmppc_irq_map *irq_map, 533 struct kvmppc_passthru_irqmap *pimap, 534 bool *again); 535 536 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 537 int level, bool line_status); 538 539 extern int h_ipi_redirect; 540 #else 541 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 542 struct kvm *kvm) 543 { return NULL; } 544 static inline void kvmppc_alloc_host_rm_ops(void) {}; 545 static inline void kvmppc_free_host_rm_ops(void) {}; 546 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 547 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 548 { return 0; } 549 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 550 { return 0; } 551 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 552 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 553 { return 0; } 554 #endif 555 556 #ifdef CONFIG_KVM_XIVE 557 /* 558 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 559 * ie. P9 new interrupt controller, while the second "xive" is the legacy 560 * "eXternal Interrupt Vector Entry" which is the configuration of an 561 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 562 * two function consume or produce a legacy "XIVE" state from the 563 * new "XIVE" interrupt controller. 564 */ 565 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 566 u32 priority); 567 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 568 u32 *priority); 569 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 570 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 571 extern void kvmppc_xive_init_module(void); 572 extern void kvmppc_xive_exit_module(void); 573 574 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 575 struct kvm_vcpu *vcpu, u32 cpu); 576 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 577 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 578 struct irq_desc *host_desc); 579 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 580 struct irq_desc *host_desc); 581 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 582 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 583 584 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 585 int level, bool line_status); 586 #else 587 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 588 u32 priority) { return -1; } 589 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 590 u32 *priority) { return -1; } 591 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 592 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 593 static inline void kvmppc_xive_init_module(void) { } 594 static inline void kvmppc_xive_exit_module(void) { } 595 596 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 597 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 598 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 599 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 600 struct irq_desc *host_desc) { return -ENODEV; } 601 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 602 struct irq_desc *host_desc) { return -ENODEV; } 603 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 604 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 605 606 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 607 int level, bool line_status) { return -ENODEV; } 608 #endif /* CONFIG_KVM_XIVE */ 609 610 /* 611 * Prototypes for functions called only from assembler code. 612 * Having prototypes reduces sparse errors. 613 */ 614 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 615 unsigned long ioba, unsigned long tce); 616 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 617 unsigned long liobn, unsigned long ioba, 618 unsigned long tce_list, unsigned long npages); 619 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 620 unsigned long liobn, unsigned long ioba, 621 unsigned long tce_value, unsigned long npages); 622 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 623 unsigned int yield_count); 624 long kvmppc_h_random(struct kvm_vcpu *vcpu); 625 void kvmhv_commence_exit(int trap); 626 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 627 void kvmppc_subcore_enter_guest(void); 628 void kvmppc_subcore_exit_guest(void); 629 long kvmppc_realmode_hmi_handler(void); 630 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 631 long pte_index, unsigned long pteh, unsigned long ptel); 632 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 633 unsigned long pte_index, unsigned long avpn); 634 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 635 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 636 unsigned long pte_index, unsigned long avpn, 637 unsigned long va); 638 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 639 unsigned long pte_index); 640 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 641 unsigned long pte_index); 642 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 643 unsigned long pte_index); 644 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 645 unsigned long slb_v, unsigned int status, bool data); 646 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 647 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 648 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 649 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 650 unsigned long mfrr); 651 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 652 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 653 654 /* 655 * Host-side operations we want to set up while running in real 656 * mode in the guest operating on the xics. 657 * Currently only VCPU wakeup is supported. 658 */ 659 660 union kvmppc_rm_state { 661 unsigned long raw; 662 struct { 663 u32 in_host; 664 u32 rm_action; 665 }; 666 }; 667 668 struct kvmppc_host_rm_core { 669 union kvmppc_rm_state rm_state; 670 void *rm_data; 671 char pad[112]; 672 }; 673 674 struct kvmppc_host_rm_ops { 675 struct kvmppc_host_rm_core *rm_core; 676 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 677 }; 678 679 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 680 681 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 682 { 683 #ifdef CONFIG_KVM_BOOKE_HV 684 return mfspr(SPRN_GEPR); 685 #elif defined(CONFIG_BOOKE) 686 return vcpu->arch.epr; 687 #else 688 return 0; 689 #endif 690 } 691 692 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 693 { 694 #ifdef CONFIG_KVM_BOOKE_HV 695 mtspr(SPRN_GEPR, epr); 696 #elif defined(CONFIG_BOOKE) 697 vcpu->arch.epr = epr; 698 #endif 699 } 700 701 #ifdef CONFIG_KVM_MPIC 702 703 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 704 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 705 u32 cpu); 706 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 707 708 #else 709 710 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 711 { 712 } 713 714 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 715 struct kvm_vcpu *vcpu, u32 cpu) 716 { 717 return -EINVAL; 718 } 719 720 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 721 struct kvm_vcpu *vcpu) 722 { 723 } 724 725 #endif /* CONFIG_KVM_MPIC */ 726 727 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 728 struct kvm_config_tlb *cfg); 729 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 730 struct kvm_dirty_tlb *cfg); 731 732 long kvmppc_alloc_lpid(void); 733 void kvmppc_claim_lpid(long lpid); 734 void kvmppc_free_lpid(long lpid); 735 void kvmppc_init_lpid(unsigned long nr_lpids); 736 737 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 738 { 739 struct page *page; 740 /* 741 * We can only access pages that the kernel maps 742 * as memory. Bail out for unmapped ones. 743 */ 744 if (!pfn_valid(pfn)) 745 return; 746 747 /* Clear i-cache for new pages */ 748 page = pfn_to_page(pfn); 749 if (!test_bit(PG_arch_1, &page->flags)) { 750 flush_dcache_icache_page(page); 751 set_bit(PG_arch_1, &page->flags); 752 } 753 } 754 755 /* 756 * Shared struct helpers. The shared struct can be little or big endian, 757 * depending on the guest endianness. So expose helpers to all of them. 758 */ 759 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 760 { 761 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 762 /* Only Book3S_64 PR supports bi-endian for now */ 763 return vcpu->arch.shared_big_endian; 764 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 765 /* Book3s_64 HV on little endian is always little endian */ 766 return false; 767 #else 768 return true; 769 #endif 770 } 771 772 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 773 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 774 { \ 775 return mfspr(bookehv_spr); \ 776 } \ 777 778 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 779 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 780 { \ 781 mtspr(bookehv_spr, val); \ 782 } \ 783 784 #define SHARED_WRAPPER_GET(reg, size) \ 785 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 786 { \ 787 if (kvmppc_shared_big_endian(vcpu)) \ 788 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 789 else \ 790 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 791 } \ 792 793 #define SHARED_WRAPPER_SET(reg, size) \ 794 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 795 { \ 796 if (kvmppc_shared_big_endian(vcpu)) \ 797 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 798 else \ 799 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 800 } \ 801 802 #define SHARED_WRAPPER(reg, size) \ 803 SHARED_WRAPPER_GET(reg, size) \ 804 SHARED_WRAPPER_SET(reg, size) \ 805 806 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 807 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 808 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 809 810 #ifdef CONFIG_KVM_BOOKE_HV 811 812 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 813 SPRNG_WRAPPER(reg, bookehv_spr) \ 814 815 #else 816 817 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 818 SHARED_WRAPPER(reg, size) \ 819 820 #endif 821 822 SHARED_WRAPPER(critical, 64) 823 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 824 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 825 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 826 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 827 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 828 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 829 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 830 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 831 SHARED_WRAPPER_GET(msr, 64) 832 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 833 { 834 if (kvmppc_shared_big_endian(vcpu)) 835 vcpu->arch.shared->msr = cpu_to_be64(val); 836 else 837 vcpu->arch.shared->msr = cpu_to_le64(val); 838 } 839 SHARED_WRAPPER(dsisr, 32) 840 SHARED_WRAPPER(int_pending, 32) 841 SHARED_WRAPPER(sprg4, 64) 842 SHARED_WRAPPER(sprg5, 64) 843 SHARED_WRAPPER(sprg6, 64) 844 SHARED_WRAPPER(sprg7, 64) 845 846 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 847 { 848 if (kvmppc_shared_big_endian(vcpu)) 849 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 850 else 851 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 852 } 853 854 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 855 { 856 if (kvmppc_shared_big_endian(vcpu)) 857 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 858 else 859 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 860 } 861 862 /* 863 * Please call after prepare_to_enter. This function puts the lazy ee and irq 864 * disabled tracking state back to normal mode, without actually enabling 865 * interrupts. 866 */ 867 static inline void kvmppc_fix_ee_before_entry(void) 868 { 869 trace_hardirqs_on(); 870 871 #ifdef CONFIG_PPC64 872 /* 873 * To avoid races, the caller must have gone directly from having 874 * interrupts fully-enabled to hard-disabled. 875 */ 876 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 877 878 /* Only need to enable IRQs by hard enabling them after this */ 879 local_paca->irq_happened = 0; 880 irq_soft_mask_set(IRQS_ENABLED); 881 #endif 882 } 883 884 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 885 { 886 ulong ea; 887 ulong msr_64bit = 0; 888 889 ea = kvmppc_get_gpr(vcpu, rb); 890 if (ra) 891 ea += kvmppc_get_gpr(vcpu, ra); 892 893 #if defined(CONFIG_PPC_BOOK3E_64) 894 msr_64bit = MSR_CM; 895 #elif defined(CONFIG_PPC_BOOK3S_64) 896 msr_64bit = MSR_SF; 897 #endif 898 899 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 900 ea = (uint32_t)ea; 901 902 return ea; 903 } 904 905 extern void xics_wake_cpu(int cpu); 906 907 #endif /* __POWERPC_KVM_PPC_H__ */ 908