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_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 85 u64 val, unsigned int bytes, 86 int is_default_endian); 87 extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 88 int rs, unsigned int bytes, 89 int is_default_endian); 90 91 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, 92 enum instruction_type type, u32 *inst); 93 94 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 95 bool data); 96 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 97 bool data); 98 extern int kvmppc_emulate_instruction(struct kvm_run *run, 99 struct kvm_vcpu *vcpu); 100 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); 101 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 102 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 103 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 104 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); 105 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 106 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 107 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 108 109 /* Core-specific hooks */ 110 111 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 112 unsigned int gtlb_idx); 113 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 114 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 115 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 116 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 117 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 118 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 119 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 120 gva_t eaddr); 121 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 122 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 123 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, 124 enum xlate_instdata xlid, enum xlate_readwrite xlrw, 125 struct kvmppc_pte *pte); 126 127 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 128 unsigned int id); 129 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 130 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 131 extern int kvmppc_core_check_processor_compat(void); 132 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 133 struct kvm_translation *tr); 134 135 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 136 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 137 138 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 139 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 140 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 141 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu); 142 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu); 143 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu); 144 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 145 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 146 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 147 struct kvm_interrupt *irq); 148 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 149 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, 150 ulong esr_flags); 151 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, 152 ulong dear_flags, 153 ulong esr_flags); 154 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); 155 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, 156 ulong esr_flags); 157 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 158 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 159 160 extern int kvmppc_booke_init(void); 161 extern void kvmppc_booke_exit(void); 162 163 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 164 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 165 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 166 167 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); 168 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); 169 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); 170 extern void kvmppc_free_hpt(struct kvm_hpt_info *info); 171 extern long kvmppc_prepare_vrma(struct kvm *kvm, 172 struct kvm_userspace_memory_region *mem); 173 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 174 struct kvm_memory_slot *memslot, unsigned long porder); 175 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 176 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd, 177 struct iommu_group *grp); 178 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm, 179 struct iommu_group *grp); 180 181 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 182 struct kvm_create_spapr_tce_64 *args); 183 extern struct kvmppc_spapr_tce_table *kvmppc_find_table( 184 struct kvm *kvm, unsigned long liobn); 185 #define kvmppc_ioba_validate(stt, ioba, npages) \ 186 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \ 187 (stt)->size, (ioba), (npages)) ? \ 188 H_PARAMETER : H_SUCCESS) 189 extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt, 190 unsigned long tce); 191 extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa, 192 unsigned long *ua, unsigned long **prmap); 193 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt, 194 unsigned long idx, unsigned long tce); 195 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 196 unsigned long ioba, unsigned long tce); 197 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, 198 unsigned long liobn, unsigned long ioba, 199 unsigned long tce_list, unsigned long npages); 200 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, 201 unsigned long liobn, unsigned long ioba, 202 unsigned long tce_value, unsigned long npages); 203 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 204 unsigned long ioba); 205 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); 206 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); 207 extern int kvmppc_core_init_vm(struct kvm *kvm); 208 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 209 extern void kvmppc_core_free_memslot(struct kvm *kvm, 210 struct kvm_memory_slot *free, 211 struct kvm_memory_slot *dont); 212 extern int kvmppc_core_create_memslot(struct kvm *kvm, 213 struct kvm_memory_slot *slot, 214 unsigned long npages); 215 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 216 struct kvm_memory_slot *memslot, 217 const struct kvm_userspace_memory_region *mem); 218 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 219 const struct kvm_userspace_memory_region *mem, 220 const struct kvm_memory_slot *old, 221 const struct kvm_memory_slot *new); 222 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 223 struct kvm_ppc_smmu_info *info); 224 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 225 struct kvm_memory_slot *memslot); 226 227 extern int kvmppc_bookehv_init(void); 228 extern void kvmppc_bookehv_exit(void); 229 230 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 231 232 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 233 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, 234 struct kvm_ppc_resize_hpt *rhpt); 235 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, 236 struct kvm_ppc_resize_hpt *rhpt); 237 238 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 239 240 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 241 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 242 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 243 244 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 245 u32 priority); 246 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 247 u32 *priority); 248 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 249 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 250 251 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); 252 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); 253 254 union kvmppc_one_reg { 255 u32 wval; 256 u64 dval; 257 vector128 vval; 258 u64 vsxval[2]; 259 u32 vsx32val[4]; 260 struct { 261 u64 addr; 262 u64 length; 263 } vpaval; 264 }; 265 266 struct kvmppc_ops { 267 struct module *owner; 268 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 269 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 270 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 271 union kvmppc_one_reg *val); 272 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 273 union kvmppc_one_reg *val); 274 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 275 void (*vcpu_put)(struct kvm_vcpu *vcpu); 276 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 277 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 278 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 279 void (*vcpu_free)(struct kvm_vcpu *vcpu); 280 int (*check_requests)(struct kvm_vcpu *vcpu); 281 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 282 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 283 int (*prepare_memory_region)(struct kvm *kvm, 284 struct kvm_memory_slot *memslot, 285 const struct kvm_userspace_memory_region *mem); 286 void (*commit_memory_region)(struct kvm *kvm, 287 const struct kvm_userspace_memory_region *mem, 288 const struct kvm_memory_slot *old, 289 const struct kvm_memory_slot *new); 290 int (*unmap_hva)(struct kvm *kvm, unsigned long hva); 291 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 292 unsigned long end); 293 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); 294 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 295 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 296 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 297 void (*free_memslot)(struct kvm_memory_slot *free, 298 struct kvm_memory_slot *dont); 299 int (*create_memslot)(struct kvm_memory_slot *slot, 300 unsigned long npages); 301 int (*init_vm)(struct kvm *kvm); 302 void (*destroy_vm)(struct kvm *kvm); 303 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 304 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 305 unsigned int inst, int *advance); 306 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 307 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 308 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 309 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 310 unsigned long arg); 311 int (*hcall_implemented)(unsigned long hcall); 312 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, 313 struct irq_bypass_producer *); 314 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, 315 struct irq_bypass_producer *); 316 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); 317 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); 318 }; 319 320 extern struct kvmppc_ops *kvmppc_hv_ops; 321 extern struct kvmppc_ops *kvmppc_pr_ops; 322 323 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, 324 enum instruction_type type, u32 *inst) 325 { 326 int ret = EMULATE_DONE; 327 u32 fetched_inst; 328 329 /* Load the instruction manually if it failed to do so in the 330 * exit path */ 331 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 332 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); 333 334 /* Write fetch_failed unswapped if the fetch failed */ 335 if (ret == EMULATE_DONE) 336 fetched_inst = kvmppc_need_byteswap(vcpu) ? 337 swab32(vcpu->arch.last_inst) : 338 vcpu->arch.last_inst; 339 else 340 fetched_inst = vcpu->arch.last_inst; 341 342 *inst = fetched_inst; 343 return ret; 344 } 345 346 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 347 { 348 return kvm->arch.kvm_ops == kvmppc_hv_ops; 349 } 350 351 extern int kvmppc_hwrng_present(void); 352 353 /* 354 * Cuts out inst bits with ordering according to spec. 355 * That means the leftmost bit is zero. All given bits are included. 356 */ 357 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 358 { 359 u32 r; 360 u32 mask; 361 362 BUG_ON(msb > lsb); 363 364 mask = (1 << (lsb - msb + 1)) - 1; 365 r = (inst >> (63 - lsb)) & mask; 366 367 return r; 368 } 369 370 /* 371 * Replaces inst bits with ordering according to spec. 372 */ 373 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 374 { 375 u32 r; 376 u32 mask; 377 378 BUG_ON(msb > lsb); 379 380 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 381 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 382 383 return r; 384 } 385 386 #define one_reg_size(id) \ 387 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 388 389 #define get_reg_val(id, reg) ({ \ 390 union kvmppc_one_reg __u; \ 391 switch (one_reg_size(id)) { \ 392 case 4: __u.wval = (reg); break; \ 393 case 8: __u.dval = (reg); break; \ 394 default: BUG(); \ 395 } \ 396 __u; \ 397 }) 398 399 400 #define set_reg_val(id, val) ({ \ 401 u64 __v; \ 402 switch (one_reg_size(id)) { \ 403 case 4: __v = (val).wval; break; \ 404 case 8: __v = (val).dval; break; \ 405 default: BUG(); \ 406 } \ 407 __v; \ 408 }) 409 410 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 411 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 412 413 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 414 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 415 416 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 417 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 418 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 419 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 420 421 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 422 423 struct openpic; 424 425 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 426 extern void kvm_cma_reserve(void) __init; 427 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 428 { 429 paca[cpu].kvm_hstate.xics_phys = (void __iomem *)addr; 430 } 431 432 static inline void kvmppc_set_xive_tima(int cpu, 433 unsigned long phys_addr, 434 void __iomem *virt_addr) 435 { 436 paca[cpu].kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr; 437 paca[cpu].kvm_hstate.xive_tima_virt = virt_addr; 438 } 439 440 static inline u32 kvmppc_get_xics_latch(void) 441 { 442 u32 xirr; 443 444 xirr = get_paca()->kvm_hstate.saved_xirr; 445 get_paca()->kvm_hstate.saved_xirr = 0; 446 return xirr; 447 } 448 449 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 450 { 451 paca[cpu].kvm_hstate.host_ipi = host_ipi; 452 } 453 454 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 455 { 456 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 457 } 458 459 extern void kvm_hv_vm_activated(void); 460 extern void kvm_hv_vm_deactivated(void); 461 extern bool kvm_hv_mode_active(void); 462 463 #else 464 static inline void __init kvm_cma_reserve(void) 465 {} 466 467 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 468 {} 469 470 static inline void kvmppc_set_xive_tima(int cpu, 471 unsigned long phys_addr, 472 void __iomem *virt_addr) 473 {} 474 475 static inline u32 kvmppc_get_xics_latch(void) 476 { 477 return 0; 478 } 479 480 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 481 {} 482 483 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 484 { 485 kvm_vcpu_kick(vcpu); 486 } 487 488 static inline bool kvm_hv_mode_active(void) { return false; } 489 490 #endif 491 492 #ifdef CONFIG_KVM_XICS 493 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 494 { 495 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 496 } 497 498 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 499 struct kvm *kvm) 500 { 501 if (kvm && kvm_irq_bypass) 502 return kvm->arch.pimap; 503 return NULL; 504 } 505 506 extern void kvmppc_alloc_host_rm_ops(void); 507 extern void kvmppc_free_host_rm_ops(void); 508 extern void kvmppc_free_pimap(struct kvm *kvm); 509 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); 510 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 511 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 512 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 513 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 514 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 515 struct kvm_vcpu *vcpu, u32 cpu); 516 extern void kvmppc_xics_ipi_action(void); 517 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, 518 unsigned long host_irq); 519 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 520 unsigned long host_irq); 521 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, 522 struct kvmppc_irq_map *irq_map, 523 struct kvmppc_passthru_irqmap *pimap, 524 bool *again); 525 526 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 527 int level, bool line_status); 528 529 extern int h_ipi_redirect; 530 #else 531 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( 532 struct kvm *kvm) 533 { return NULL; } 534 static inline void kvmppc_alloc_host_rm_ops(void) {}; 535 static inline void kvmppc_free_host_rm_ops(void) {}; 536 static inline void kvmppc_free_pimap(struct kvm *kvm) {}; 537 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) 538 { return 0; } 539 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 540 { return 0; } 541 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 542 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 543 { return 0; } 544 #endif 545 546 #ifdef CONFIG_KVM_XIVE 547 /* 548 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine" 549 * ie. P9 new interrupt controller, while the second "xive" is the legacy 550 * "eXternal Interrupt Vector Entry" which is the configuration of an 551 * interrupt on the "xics" interrupt controller on P8 and earlier. Those 552 * two function consume or produce a legacy "XIVE" state from the 553 * new "XIVE" interrupt controller. 554 */ 555 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 556 u32 priority); 557 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 558 u32 *priority); 559 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); 560 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); 561 extern void kvmppc_xive_init_module(void); 562 extern void kvmppc_xive_exit_module(void); 563 564 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 565 struct kvm_vcpu *vcpu, u32 cpu); 566 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); 567 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 568 struct irq_desc *host_desc); 569 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 570 struct irq_desc *host_desc); 571 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); 572 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 573 574 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 575 int level, bool line_status); 576 #else 577 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, 578 u32 priority) { return -1; } 579 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, 580 u32 *priority) { return -1; } 581 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } 582 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } 583 static inline void kvmppc_xive_init_module(void) { } 584 static inline void kvmppc_xive_exit_module(void) { } 585 586 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, 587 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } 588 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { } 589 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, 590 struct irq_desc *host_desc) { return -ENODEV; } 591 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, 592 struct irq_desc *host_desc) { return -ENODEV; } 593 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; } 594 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; } 595 596 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, 597 int level, bool line_status) { return -ENODEV; } 598 #endif /* CONFIG_KVM_XIVE */ 599 600 /* 601 * Prototypes for functions called only from assembler code. 602 * Having prototypes reduces sparse errors. 603 */ 604 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 605 unsigned long ioba, unsigned long tce); 606 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, 607 unsigned long liobn, unsigned long ioba, 608 unsigned long tce_list, unsigned long npages); 609 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, 610 unsigned long liobn, unsigned long ioba, 611 unsigned long tce_value, unsigned long npages); 612 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, 613 unsigned int yield_count); 614 long kvmppc_h_random(struct kvm_vcpu *vcpu); 615 void kvmhv_commence_exit(int trap); 616 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); 617 void kvmppc_subcore_enter_guest(void); 618 void kvmppc_subcore_exit_guest(void); 619 long kvmppc_realmode_hmi_handler(void); 620 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 621 long pte_index, unsigned long pteh, unsigned long ptel); 622 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, 623 unsigned long pte_index, unsigned long avpn); 624 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); 625 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, 626 unsigned long pte_index, unsigned long avpn, 627 unsigned long va); 628 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, 629 unsigned long pte_index); 630 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, 631 unsigned long pte_index); 632 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, 633 unsigned long pte_index); 634 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, 635 unsigned long slb_v, unsigned int status, bool data); 636 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); 637 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); 638 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); 639 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, 640 unsigned long mfrr); 641 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); 642 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); 643 644 /* 645 * Host-side operations we want to set up while running in real 646 * mode in the guest operating on the xics. 647 * Currently only VCPU wakeup is supported. 648 */ 649 650 union kvmppc_rm_state { 651 unsigned long raw; 652 struct { 653 u32 in_host; 654 u32 rm_action; 655 }; 656 }; 657 658 struct kvmppc_host_rm_core { 659 union kvmppc_rm_state rm_state; 660 void *rm_data; 661 char pad[112]; 662 }; 663 664 struct kvmppc_host_rm_ops { 665 struct kvmppc_host_rm_core *rm_core; 666 void (*vcpu_kick)(struct kvm_vcpu *vcpu); 667 }; 668 669 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; 670 671 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) 672 { 673 #ifdef CONFIG_KVM_BOOKE_HV 674 return mfspr(SPRN_GEPR); 675 #elif defined(CONFIG_BOOKE) 676 return vcpu->arch.epr; 677 #else 678 return 0; 679 #endif 680 } 681 682 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 683 { 684 #ifdef CONFIG_KVM_BOOKE_HV 685 mtspr(SPRN_GEPR, epr); 686 #elif defined(CONFIG_BOOKE) 687 vcpu->arch.epr = epr; 688 #endif 689 } 690 691 #ifdef CONFIG_KVM_MPIC 692 693 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 694 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 695 u32 cpu); 696 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 697 698 #else 699 700 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 701 { 702 } 703 704 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 705 struct kvm_vcpu *vcpu, u32 cpu) 706 { 707 return -EINVAL; 708 } 709 710 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 711 struct kvm_vcpu *vcpu) 712 { 713 } 714 715 #endif /* CONFIG_KVM_MPIC */ 716 717 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 718 struct kvm_config_tlb *cfg); 719 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 720 struct kvm_dirty_tlb *cfg); 721 722 long kvmppc_alloc_lpid(void); 723 void kvmppc_claim_lpid(long lpid); 724 void kvmppc_free_lpid(long lpid); 725 void kvmppc_init_lpid(unsigned long nr_lpids); 726 727 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) 728 { 729 struct page *page; 730 /* 731 * We can only access pages that the kernel maps 732 * as memory. Bail out for unmapped ones. 733 */ 734 if (!pfn_valid(pfn)) 735 return; 736 737 /* Clear i-cache for new pages */ 738 page = pfn_to_page(pfn); 739 if (!test_bit(PG_arch_1, &page->flags)) { 740 flush_dcache_icache_page(page); 741 set_bit(PG_arch_1, &page->flags); 742 } 743 } 744 745 /* 746 * Shared struct helpers. The shared struct can be little or big endian, 747 * depending on the guest endianness. So expose helpers to all of them. 748 */ 749 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) 750 { 751 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) 752 /* Only Book3S_64 PR supports bi-endian for now */ 753 return vcpu->arch.shared_big_endian; 754 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) 755 /* Book3s_64 HV on little endian is always little endian */ 756 return false; 757 #else 758 return true; 759 #endif 760 } 761 762 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 763 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 764 { \ 765 return mfspr(bookehv_spr); \ 766 } \ 767 768 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 769 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ 770 { \ 771 mtspr(bookehv_spr, val); \ 772 } \ 773 774 #define SHARED_WRAPPER_GET(reg, size) \ 775 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ 776 { \ 777 if (kvmppc_shared_big_endian(vcpu)) \ 778 return be##size##_to_cpu(vcpu->arch.shared->reg); \ 779 else \ 780 return le##size##_to_cpu(vcpu->arch.shared->reg); \ 781 } \ 782 783 #define SHARED_WRAPPER_SET(reg, size) \ 784 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ 785 { \ 786 if (kvmppc_shared_big_endian(vcpu)) \ 787 vcpu->arch.shared->reg = cpu_to_be##size(val); \ 788 else \ 789 vcpu->arch.shared->reg = cpu_to_le##size(val); \ 790 } \ 791 792 #define SHARED_WRAPPER(reg, size) \ 793 SHARED_WRAPPER_GET(reg, size) \ 794 SHARED_WRAPPER_SET(reg, size) \ 795 796 #define SPRNG_WRAPPER(reg, bookehv_spr) \ 797 SPRNG_WRAPPER_GET(reg, bookehv_spr) \ 798 SPRNG_WRAPPER_SET(reg, bookehv_spr) \ 799 800 #ifdef CONFIG_KVM_BOOKE_HV 801 802 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 803 SPRNG_WRAPPER(reg, bookehv_spr) \ 804 805 #else 806 807 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ 808 SHARED_WRAPPER(reg, size) \ 809 810 #endif 811 812 SHARED_WRAPPER(critical, 64) 813 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) 814 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) 815 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) 816 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) 817 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) 818 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) 819 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) 820 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) 821 SHARED_WRAPPER_GET(msr, 64) 822 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) 823 { 824 if (kvmppc_shared_big_endian(vcpu)) 825 vcpu->arch.shared->msr = cpu_to_be64(val); 826 else 827 vcpu->arch.shared->msr = cpu_to_le64(val); 828 } 829 SHARED_WRAPPER(dsisr, 32) 830 SHARED_WRAPPER(int_pending, 32) 831 SHARED_WRAPPER(sprg4, 64) 832 SHARED_WRAPPER(sprg5, 64) 833 SHARED_WRAPPER(sprg6, 64) 834 SHARED_WRAPPER(sprg7, 64) 835 836 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) 837 { 838 if (kvmppc_shared_big_endian(vcpu)) 839 return be32_to_cpu(vcpu->arch.shared->sr[nr]); 840 else 841 return le32_to_cpu(vcpu->arch.shared->sr[nr]); 842 } 843 844 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) 845 { 846 if (kvmppc_shared_big_endian(vcpu)) 847 vcpu->arch.shared->sr[nr] = cpu_to_be32(val); 848 else 849 vcpu->arch.shared->sr[nr] = cpu_to_le32(val); 850 } 851 852 /* 853 * Please call after prepare_to_enter. This function puts the lazy ee and irq 854 * disabled tracking state back to normal mode, without actually enabling 855 * interrupts. 856 */ 857 static inline void kvmppc_fix_ee_before_entry(void) 858 { 859 trace_hardirqs_on(); 860 861 #ifdef CONFIG_PPC64 862 /* 863 * To avoid races, the caller must have gone directly from having 864 * interrupts fully-enabled to hard-disabled. 865 */ 866 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 867 868 /* Only need to enable IRQs by hard enabling them after this */ 869 local_paca->irq_happened = 0; 870 local_paca->soft_enabled = 1; 871 #endif 872 } 873 874 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 875 { 876 ulong ea; 877 ulong msr_64bit = 0; 878 879 ea = kvmppc_get_gpr(vcpu, rb); 880 if (ra) 881 ea += kvmppc_get_gpr(vcpu, ra); 882 883 #if defined(CONFIG_PPC_BOOK3E_64) 884 msr_64bit = MSR_CM; 885 #elif defined(CONFIG_PPC_BOOK3S_64) 886 msr_64bit = MSR_SF; 887 #endif 888 889 if (!(kvmppc_get_msr(vcpu) & msr_64bit)) 890 ea = (uint32_t)ea; 891 892 return ea; 893 } 894 895 extern void xics_wake_cpu(int cpu); 896 897 #endif /* __POWERPC_KVM_PPC_H__ */ 898