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_machine_check(struct kvm_vcpu *vcpu, ulong flags); 145 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 146 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu); 147 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu); 148 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu); 149 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 150 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 151 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 152 struct kvm_interrupt *irq); 153 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 154 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 155 ulong esr_flags); 156 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 157 ulong dear_flags, 158 ulong esr_flags); 159 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 160 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 161 ulong esr_flags); 162 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 163 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 164 165 extern int kvmppc_booke_init(void); 166 extern void kvmppc_booke_exit(void); 167 168 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 169 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 170 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 171 172 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); 173 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); 174 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); 175 extern void kvmppc_free_hpt(struct kvm_hpt_info *info); 176 extern void kvmppc_rmap_reset(struct kvm *kvm); 177 extern long kvmppc_prepare_vrma(struct kvm *kvm, 178 struct kvm_userspace_memory_region *mem); 179 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 180 struct kvm_memory_slot *memslot, unsigned long porder); 181 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 182 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd, 183 struct iommu_group *grp); 184 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm, 185 struct iommu_group *grp); 186 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm); 187 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm); 188 extern void kvmppc_setup_partition_table(struct kvm *kvm); 189 190 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 191 struct kvm_create_spapr_tce_64 *args); 192 extern struct kvmppc_spapr_tce_table *kvmppc_find_table( 193 struct kvm *kvm, unsigned long liobn); 194 #define kvmppc_ioba_validate(stt, ioba, npages) \ 195 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \ 196 (stt)->size, (ioba), (npages)) ? \ 197 H_PARAMETER : H_SUCCESS) 198 extern long kvmppc_tce_to_ua(struct kvm *kvm, unsigned long tce, 199 unsigned long *ua, unsigned long **prmap); 200 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt, 201 unsigned long idx, unsigned long tce); 202 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 203 unsigned long ioba, unsigned long tce); 204 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 205 unsigned long liobn, unsigned long ioba, 206 unsigned long tce_list, unsigned long npages); 207 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 208 unsigned long liobn, unsigned long ioba, 209 unsigned long tce_value, unsigned long npages); 210 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 211 unsigned long ioba); 212 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 213 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 214 extern int kvmppc_core_init_vm(struct kvm *kvm); 215 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 216 extern void kvmppc_core_free_memslot(struct kvm *kvm, 217 struct kvm_memory_slot *free, 218 struct kvm_memory_slot *dont); 219 extern int kvmppc_core_create_memslot(struct kvm *kvm, 220 struct kvm_memory_slot *slot, 221 unsigned long npages); 222 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 223 struct kvm_memory_slot *memslot, 224 const struct kvm_userspace_memory_region *mem); 225 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 226 const struct kvm_userspace_memory_region *mem, 227 const struct kvm_memory_slot *old, 228 const struct kvm_memory_slot *new, 229 enum kvm_mr_change change); 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 enum kvm_mr_change change); 301 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 302 unsigned long end); 303 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 304 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 305 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 306 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 307 void (*free_memslot)(struct kvm_memory_slot *free, 308 struct kvm_memory_slot *dont); 309 int (*create_memslot)(struct kvm_memory_slot *slot, 310 unsigned long npages); 311 int (*init_vm)(struct kvm *kvm); 312 void (*destroy_vm)(struct kvm *kvm); 313 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 314 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 315 unsigned int inst, int *advance); 316 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 317 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 318 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 319 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 320 unsigned long arg); 321 int (*hcall_implemented)(unsigned long hcall); 322 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 323 struct irq_bypass_producer *); 324 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 325 struct irq_bypass_producer *); 326 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 327 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 328 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode, 329 unsigned long flags); 330 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr); 331 int (*enable_nested)(struct kvm *kvm); 332 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 333 int size); 334 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, 335 int size); 336 }; 337 338 extern struct kvmppc_ops *kvmppc_hv_ops; 339 extern struct kvmppc_ops *kvmppc_pr_ops; 340 341 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 342 enum instruction_fetch_type type, u32 *inst) 343 { 344 int ret = EMULATE_DONE; 345 u32 fetched_inst; 346 347 /* Load the instruction manually if it failed to do so in the 348 * exit path */ 349 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 350 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 351 352 /* Write fetch_failed unswapped if the fetch failed */ 353 if (ret == EMULATE_DONE) 354 fetched_inst = kvmppc_need_byteswap(vcpu) ? 355 swab32(vcpu->arch.last_inst) : 356 vcpu->arch.last_inst; 357 else 358 fetched_inst = vcpu->arch.last_inst; 359 360 *inst = fetched_inst; 361 return ret; 362 } 363 364 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 365 { 366 return kvm->arch.kvm_ops == kvmppc_hv_ops; 367 } 368 369 extern int kvmppc_hwrng_present(void); 370 371 /* 372 * Cuts out inst bits with ordering according to spec. 373 * That means the leftmost bit is zero. All given bits are included. 374 */ 375 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 376 { 377 u32 r; 378 u32 mask; 379 380 BUG_ON(msb > lsb); 381 382 mask = (1 << (lsb - msb + 1)) - 1; 383 r = (inst >> (63 - lsb)) & mask; 384 385 return r; 386 } 387 388 /* 389 * Replaces inst bits with ordering according to spec. 390 */ 391 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 392 { 393 u32 r; 394 u32 mask; 395 396 BUG_ON(msb > lsb); 397 398 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 399 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 400 401 return r; 402 } 403 404 #define one_reg_size(id) \ 405 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 406 407 #define get_reg_val(id, reg) ({ \ 408 union kvmppc_one_reg __u; \ 409 switch (one_reg_size(id)) { \ 410 case 4: __u.wval = (reg); break; \ 411 case 8: __u.dval = (reg); break; \ 412 default: BUG(); \ 413 } \ 414 __u; \ 415 }) 416 417 418 #define set_reg_val(id, val) ({ \ 419 u64 __v; \ 420 switch (one_reg_size(id)) { \ 421 case 4: __v = (val).wval; break; \ 422 case 8: __v = (val).dval; break; \ 423 default: BUG(); \ 424 } \ 425 __v; \ 426 }) 427 428 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 429 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 430 431 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 432 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 433 434 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 435 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 436 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 437 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 438 439 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 440 441 struct openpic; 442 443 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 444 extern void kvm_cma_reserve(void) __init; 445 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 446 { 447 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr; 448 } 449 450 static inline void kvmppc_set_xive_tima(int cpu, 451 unsigned long phys_addr, 452 void __iomem *virt_addr) 453 { 454 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 455 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr; 456 } 457 458 static inline u32 kvmppc_get_xics_latch(void) 459 { 460 u32 xirr; 461 462 xirr = get_paca()->kvm_hstate.saved_xirr; 463 get_paca()->kvm_hstate.saved_xirr = 0; 464 return xirr; 465 } 466 467 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 468 { 469 paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi; 470 } 471 472 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 473 { 474 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 475 } 476 477 extern void kvm_hv_vm_activated(void); 478 extern void kvm_hv_vm_deactivated(void); 479 extern bool kvm_hv_mode_active(void); 480 481 #else 482 static inline void __init kvm_cma_reserve(void) 483 {} 484 485 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 486 {} 487 488 static inline void kvmppc_set_xive_tima(int cpu, 489 unsigned long phys_addr, 490 void __iomem *virt_addr) 491 {} 492 493 static inline u32 kvmppc_get_xics_latch(void) 494 { 495 return 0; 496 } 497 498 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 499 {} 500 501 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 502 { 503 kvm_vcpu_kick(vcpu); 504 } 505 506 static inline bool kvm_hv_mode_active(void) { return false; } 507 508 #endif 509 510 #ifdef CONFIG_KVM_XICS 511 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 512 { 513 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 514 } 515 516 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 517 struct kvm *kvm) 518 { 519 if (kvm && kvm_irq_bypass) 520 return kvm->arch.pimap; 521 return NULL; 522 } 523 524 extern void kvmppc_alloc_host_rm_ops(void); 525 extern void kvmppc_free_host_rm_ops(void); 526 extern void kvmppc_free_pimap(struct kvm *kvm); 527 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 528 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 529 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 530 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 531 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 532 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 533 struct kvm_vcpu *vcpu, u32 cpu); 534 extern void kvmppc_xics_ipi_action(void); 535 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 536 unsigned long host_irq); 537 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 538 unsigned long host_irq); 539 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 540 struct kvmppc_irq_map *irq_map, 541 struct kvmppc_passthru_irqmap *pimap, 542 bool *again); 543 544 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 545 int level, bool line_status); 546 547 extern int h_ipi_redirect; 548 #else 549 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 550 struct kvm *kvm) 551 { return NULL; } 552 static inline void kvmppc_alloc_host_rm_ops(void) {}; 553 static inline void kvmppc_free_host_rm_ops(void) {}; 554 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 555 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 556 { return 0; } 557 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 558 { return 0; } 559 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 560 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 561 { return 0; } 562 #endif 563 564 #ifdef CONFIG_KVM_XIVE 565 /* 566 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 567 * ie. P9 new interrupt controller, while the second "xive" is the legacy 568 * "eXternal Interrupt Vector Entry" which is the configuration of an 569 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 570 * two function consume or produce a legacy "XIVE" state from the 571 * new "XIVE" interrupt controller. 572 */ 573 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 574 u32 priority); 575 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 576 u32 *priority); 577 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 578 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 579 extern void kvmppc_xive_init_module(void); 580 extern void kvmppc_xive_exit_module(void); 581 582 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 583 struct kvm_vcpu *vcpu, u32 cpu); 584 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 585 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 586 struct irq_desc *host_desc); 587 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 588 struct irq_desc *host_desc); 589 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 590 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 591 592 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 593 int level, bool line_status); 594 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); 595 #else 596 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 597 u32 priority) { return -1; } 598 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 599 u32 *priority) { return -1; } 600 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 601 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 602 static inline void kvmppc_xive_init_module(void) { } 603 static inline void kvmppc_xive_exit_module(void) { } 604 605 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 606 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 607 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 608 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 609 struct irq_desc *host_desc) { return -ENODEV; } 610 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 611 struct irq_desc *host_desc) { return -ENODEV; } 612 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 613 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 614 615 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 616 int level, bool line_status) { return -ENODEV; } 617 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } 618 #endif /* CONFIG_KVM_XIVE */ 619 620 /* 621 * Prototypes for functions called only from assembler code. 622 * Having prototypes reduces sparse errors. 623 */ 624 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 625 unsigned long ioba, unsigned long tce); 626 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 627 unsigned long liobn, unsigned long ioba, 628 unsigned long tce_list, unsigned long npages); 629 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 630 unsigned long liobn, unsigned long ioba, 631 unsigned long tce_value, unsigned long npages); 632 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 633 unsigned int yield_count); 634 long kvmppc_h_random(struct kvm_vcpu *vcpu); 635 void kvmhv_commence_exit(int trap); 636 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 637 void kvmppc_subcore_enter_guest(void); 638 void kvmppc_subcore_exit_guest(void); 639 long kvmppc_realmode_hmi_handler(void); 640 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 641 long pte_index, unsigned long pteh, unsigned long ptel); 642 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 643 unsigned long pte_index, unsigned long avpn); 644 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 645 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 646 unsigned long pte_index, unsigned long avpn, 647 unsigned long va); 648 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 649 unsigned long pte_index); 650 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 651 unsigned long pte_index); 652 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 653 unsigned long pte_index); 654 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 655 unsigned long slb_v, unsigned int status, bool data); 656 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 657 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 658 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 659 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 660 unsigned long mfrr); 661 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 662 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 663 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); 664 665 /* 666 * Host-side operations we want to set up while running in real 667 * mode in the guest operating on the xics. 668 * Currently only VCPU wakeup is supported. 669 */ 670 671 union kvmppc_rm_state { 672 unsigned long raw; 673 struct { 674 u32 in_host; 675 u32 rm_action; 676 }; 677 }; 678 679 struct kvmppc_host_rm_core { 680 union kvmppc_rm_state rm_state; 681 void *rm_data; 682 char pad[112]; 683 }; 684 685 struct kvmppc_host_rm_ops { 686 struct kvmppc_host_rm_core *rm_core; 687 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 688 }; 689 690 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 691 692 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 693 { 694 #ifdef CONFIG_KVM_BOOKE_HV 695 return mfspr(SPRN_GEPR); 696 #elif defined(CONFIG_BOOKE) 697 return vcpu->arch.epr; 698 #else 699 return 0; 700 #endif 701 } 702 703 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 704 { 705 #ifdef CONFIG_KVM_BOOKE_HV 706 mtspr(SPRN_GEPR, epr); 707 #elif defined(CONFIG_BOOKE) 708 vcpu->arch.epr = epr; 709 #endif 710 } 711 712 #ifdef CONFIG_KVM_MPIC 713 714 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 715 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 716 u32 cpu); 717 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 718 719 #else 720 721 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 722 { 723 } 724 725 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 726 struct kvm_vcpu *vcpu, u32 cpu) 727 { 728 return -EINVAL; 729 } 730 731 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 732 struct kvm_vcpu *vcpu) 733 { 734 } 735 736 #endif /* CONFIG_KVM_MPIC */ 737 738 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 739 struct kvm_config_tlb *cfg); 740 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 741 struct kvm_dirty_tlb *cfg); 742 743 long kvmppc_alloc_lpid(void); 744 void kvmppc_claim_lpid(long lpid); 745 void kvmppc_free_lpid(long lpid); 746 void kvmppc_init_lpid(unsigned long nr_lpids); 747 748 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 749 { 750 struct page *page; 751 /* 752 * We can only access pages that the kernel maps 753 * as memory. Bail out for unmapped ones. 754 */ 755 if (!pfn_valid(pfn)) 756 return; 757 758 /* Clear i-cache for new pages */ 759 page = pfn_to_page(pfn); 760 if (!test_bit(PG_arch_1, &page->flags)) { 761 flush_dcache_icache_page(page); 762 set_bit(PG_arch_1, &page->flags); 763 } 764 } 765 766 /* 767 * Shared struct helpers. The shared struct can be little or big endian, 768 * depending on the guest endianness. So expose helpers to all of them. 769 */ 770 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 771 { 772 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 773 /* Only Book3S_64 PR supports bi-endian for now */ 774 return vcpu->arch.shared_big_endian; 775 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 776 /* Book3s_64 HV on little endian is always little endian */ 777 return false; 778 #else 779 return true; 780 #endif 781 } 782 783 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 784 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 785 { \ 786 return mfspr(bookehv_spr); \ 787 } \ 788 789 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 790 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 791 { \ 792 mtspr(bookehv_spr, val); \ 793 } \ 794 795 #define SHARED_WRAPPER_GET(reg, size) \ 796 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 797 { \ 798 if (kvmppc_shared_big_endian(vcpu)) \ 799 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 800 else \ 801 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 802 } \ 803 804 #define SHARED_WRAPPER_SET(reg, size) \ 805 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 806 { \ 807 if (kvmppc_shared_big_endian(vcpu)) \ 808 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 809 else \ 810 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 811 } \ 812 813 #define SHARED_WRAPPER(reg, size) \ 814 SHARED_WRAPPER_GET(reg, size) \ 815 SHARED_WRAPPER_SET(reg, size) \ 816 817 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 818 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 819 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 820 821 #ifdef CONFIG_KVM_BOOKE_HV 822 823 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 824 SPRNG_WRAPPER(reg, bookehv_spr) \ 825 826 #else 827 828 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 829 SHARED_WRAPPER(reg, size) \ 830 831 #endif 832 833 SHARED_WRAPPER(critical, 64) 834 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 835 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 836 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 837 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 838 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 839 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 840 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 841 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 842 SHARED_WRAPPER_GET(msr, 64) 843 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 844 { 845 if (kvmppc_shared_big_endian(vcpu)) 846 vcpu->arch.shared->msr = cpu_to_be64(val); 847 else 848 vcpu->arch.shared->msr = cpu_to_le64(val); 849 } 850 SHARED_WRAPPER(dsisr, 32) 851 SHARED_WRAPPER(int_pending, 32) 852 SHARED_WRAPPER(sprg4, 64) 853 SHARED_WRAPPER(sprg5, 64) 854 SHARED_WRAPPER(sprg6, 64) 855 SHARED_WRAPPER(sprg7, 64) 856 857 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 858 { 859 if (kvmppc_shared_big_endian(vcpu)) 860 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 861 else 862 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 863 } 864 865 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 866 { 867 if (kvmppc_shared_big_endian(vcpu)) 868 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 869 else 870 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 871 } 872 873 /* 874 * Please call after prepare_to_enter. This function puts the lazy ee and irq 875 * disabled tracking state back to normal mode, without actually enabling 876 * interrupts. 877 */ 878 static inline void kvmppc_fix_ee_before_entry(void) 879 { 880 trace_hardirqs_on(); 881 882 #ifdef CONFIG_PPC64 883 /* 884 * To avoid races, the caller must have gone directly from having 885 * interrupts fully-enabled to hard-disabled. 886 */ 887 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 888 889 /* Only need to enable IRQs by hard enabling them after this */ 890 local_paca->irq_happened = 0; 891 irq_soft_mask_set(IRQS_ENABLED); 892 #endif 893 } 894 895 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 896 { 897 ulong ea; 898 ulong msr_64bit = 0; 899 900 ea = kvmppc_get_gpr(vcpu, rb); 901 if (ra) 902 ea += kvmppc_get_gpr(vcpu, ra); 903 904 #if defined(CONFIG_PPC_BOOK3E_64) 905 msr_64bit = MSR_CM; 906 #elif defined(CONFIG_PPC_BOOK3S_64) 907 msr_64bit = MSR_SF; 908 #endif 909 910 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 911 ea = (uint32_t)ea; 912 913 return ea; 914 } 915 916 extern void xics_wake_cpu(int cpu); 917 918 #endif /* __POWERPC_KVM_PPC_H__ */ 919