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 enum emulation_result { 42 EMULATE_DONE, /* no further processing */ 43 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 44 EMULATE_DO_DCR, /* kvm_run filled with DCR request */ 45 EMULATE_FAIL, /* can't emulate this instruction */ 46 EMULATE_AGAIN, /* something went wrong. go again */ 47 EMULATE_EXIT_USER, /* emulation requires exit to user-space */ 48 }; 49 50 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 51 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 52 extern void kvmppc_handler_highmem(void); 53 54 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 55 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 56 unsigned int rt, unsigned int bytes, 57 int is_default_endian); 58 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 59 unsigned int rt, unsigned int bytes, 60 int is_default_endian); 61 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 62 u64 val, unsigned int bytes, 63 int is_default_endian); 64 65 extern int kvmppc_emulate_instruction(struct kvm_run *run, 66 struct kvm_vcpu *vcpu); 67 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 68 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 69 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 70 extern void kvmppc_decrementer_func(unsigned long data); 71 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 72 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 73 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 74 75 /* Core-specific hooks */ 76 77 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 78 unsigned int gtlb_idx); 79 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 80 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 81 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 82 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 83 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 84 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 85 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 86 gva_t eaddr); 87 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 88 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 89 90 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 91 unsigned int id); 92 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 93 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 94 extern int kvmppc_core_check_processor_compat(void); 95 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 96 struct kvm_translation *tr); 97 98 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 99 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 100 101 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 102 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 103 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 104 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 105 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 106 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 107 struct kvm_interrupt *irq); 108 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 109 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 110 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 111 112 extern int kvmppc_booke_init(void); 113 extern void kvmppc_booke_exit(void); 114 115 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 116 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 117 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 118 119 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); 120 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); 121 extern void kvmppc_free_hpt(struct kvm *kvm); 122 extern long kvmppc_prepare_vrma(struct kvm *kvm, 123 struct kvm_userspace_memory_region *mem); 124 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 125 struct kvm_memory_slot *memslot, unsigned long porder); 126 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 127 128 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 129 struct kvm_create_spapr_tce *args); 130 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 131 unsigned long ioba, unsigned long tce); 132 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 133 unsigned long ioba); 134 extern struct kvm_rma_info *kvm_alloc_rma(void); 135 extern void kvm_release_rma(struct kvm_rma_info *ri); 136 extern struct page *kvm_alloc_hpt(unsigned long nr_pages); 137 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages); 138 extern int kvmppc_core_init_vm(struct kvm *kvm); 139 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 140 extern void kvmppc_core_free_memslot(struct kvm *kvm, 141 struct kvm_memory_slot *free, 142 struct kvm_memory_slot *dont); 143 extern int kvmppc_core_create_memslot(struct kvm *kvm, 144 struct kvm_memory_slot *slot, 145 unsigned long npages); 146 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 147 struct kvm_memory_slot *memslot, 148 struct kvm_userspace_memory_region *mem); 149 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 150 struct kvm_userspace_memory_region *mem, 151 const struct kvm_memory_slot *old); 152 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 153 struct kvm_ppc_smmu_info *info); 154 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 155 struct kvm_memory_slot *memslot); 156 157 extern int kvmppc_bookehv_init(void); 158 extern void kvmppc_bookehv_exit(void); 159 160 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 161 162 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 163 164 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 165 166 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 167 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 168 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 169 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 170 u32 priority); 171 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 172 u32 *priority); 173 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 174 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 175 176 union kvmppc_one_reg { 177 u32 wval; 178 u64 dval; 179 vector128 vval; 180 u64 vsxval[2]; 181 struct { 182 u64 addr; 183 u64 length; 184 } vpaval; 185 }; 186 187 struct kvmppc_ops { 188 struct module *owner; 189 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 190 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 191 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 192 union kvmppc_one_reg *val); 193 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 194 union kvmppc_one_reg *val); 195 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 196 void (*vcpu_put)(struct kvm_vcpu *vcpu); 197 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 198 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 199 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 200 void (*vcpu_free)(struct kvm_vcpu *vcpu); 201 int (*check_requests)(struct kvm_vcpu *vcpu); 202 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 203 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 204 int (*prepare_memory_region)(struct kvm *kvm, 205 struct kvm_memory_slot *memslot, 206 struct kvm_userspace_memory_region *mem); 207 void (*commit_memory_region)(struct kvm *kvm, 208 struct kvm_userspace_memory_region *mem, 209 const struct kvm_memory_slot *old); 210 int (*unmap_hva)(struct kvm *kvm, unsigned long hva); 211 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 212 unsigned long end); 213 int (*age_hva)(struct kvm *kvm, unsigned long hva); 214 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 215 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 216 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 217 void (*free_memslot)(struct kvm_memory_slot *free, 218 struct kvm_memory_slot *dont); 219 int (*create_memslot)(struct kvm_memory_slot *slot, 220 unsigned long npages); 221 int (*init_vm)(struct kvm *kvm); 222 void (*destroy_vm)(struct kvm *kvm); 223 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 224 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 225 unsigned int inst, int *advance); 226 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 227 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 228 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 229 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 230 unsigned long arg); 231 232 }; 233 234 extern struct kvmppc_ops *kvmppc_hv_ops; 235 extern struct kvmppc_ops *kvmppc_pr_ops; 236 237 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 238 { 239 return kvm->arch.kvm_ops == kvmppc_hv_ops; 240 } 241 242 /* 243 * Cuts out inst bits with ordering according to spec. 244 * That means the leftmost bit is zero. All given bits are included. 245 */ 246 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 247 { 248 u32 r; 249 u32 mask; 250 251 BUG_ON(msb > lsb); 252 253 mask = (1 << (lsb - msb + 1)) - 1; 254 r = (inst >> (63 - lsb)) & mask; 255 256 return r; 257 } 258 259 /* 260 * Replaces inst bits with ordering according to spec. 261 */ 262 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 263 { 264 u32 r; 265 u32 mask; 266 267 BUG_ON(msb > lsb); 268 269 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 270 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 271 272 return r; 273 } 274 275 #define one_reg_size(id) \ 276 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 277 278 #define get_reg_val(id, reg) ({ \ 279 union kvmppc_one_reg __u; \ 280 switch (one_reg_size(id)) { \ 281 case 4: __u.wval = (reg); break; \ 282 case 8: __u.dval = (reg); break; \ 283 default: BUG(); \ 284 } \ 285 __u; \ 286 }) 287 288 289 #define set_reg_val(id, val) ({ \ 290 u64 __v; \ 291 switch (one_reg_size(id)) { \ 292 case 4: __v = (val).wval; break; \ 293 case 8: __v = (val).dval; break; \ 294 default: BUG(); \ 295 } \ 296 __v; \ 297 }) 298 299 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 300 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 301 302 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 303 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 304 305 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 306 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 307 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 308 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 309 310 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 311 312 struct openpic; 313 314 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 315 extern void kvm_cma_reserve(void) __init; 316 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 317 { 318 paca[cpu].kvm_hstate.xics_phys = addr; 319 } 320 321 static inline u32 kvmppc_get_xics_latch(void) 322 { 323 u32 xirr; 324 325 xirr = get_paca()->kvm_hstate.saved_xirr; 326 get_paca()->kvm_hstate.saved_xirr = 0; 327 return xirr; 328 } 329 330 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 331 { 332 paca[cpu].kvm_hstate.host_ipi = host_ipi; 333 } 334 335 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 336 { 337 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 338 } 339 340 #else 341 static inline void __init kvm_cma_reserve(void) 342 {} 343 344 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 345 {} 346 347 static inline u32 kvmppc_get_xics_latch(void) 348 { 349 return 0; 350 } 351 352 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 353 {} 354 355 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 356 { 357 kvm_vcpu_kick(vcpu); 358 } 359 #endif 360 361 #ifdef CONFIG_KVM_XICS 362 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 363 { 364 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 365 } 366 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 367 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 368 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 369 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 370 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 371 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 372 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 373 struct kvm_vcpu *vcpu, u32 cpu); 374 #else 375 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 376 { return 0; } 377 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 378 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 379 unsigned long server) 380 { return -EINVAL; } 381 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 382 struct kvm_irq_level *args) 383 { return -ENOTTY; } 384 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 385 { return 0; } 386 #endif 387 388 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 389 { 390 #ifdef CONFIG_KVM_BOOKE_HV 391 mtspr(SPRN_GEPR, epr); 392 #elif defined(CONFIG_BOOKE) 393 vcpu->arch.epr = epr; 394 #endif 395 } 396 397 #ifdef CONFIG_KVM_MPIC 398 399 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 400 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 401 u32 cpu); 402 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 403 404 #else 405 406 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 407 { 408 } 409 410 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 411 struct kvm_vcpu *vcpu, u32 cpu) 412 { 413 return -EINVAL; 414 } 415 416 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 417 struct kvm_vcpu *vcpu) 418 { 419 } 420 421 #endif /* CONFIG_KVM_MPIC */ 422 423 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 424 struct kvm_config_tlb *cfg); 425 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 426 struct kvm_dirty_tlb *cfg); 427 428 long kvmppc_alloc_lpid(void); 429 void kvmppc_claim_lpid(long lpid); 430 void kvmppc_free_lpid(long lpid); 431 void kvmppc_init_lpid(unsigned long nr_lpids); 432 433 static inline void kvmppc_mmu_flush_icache(pfn_t pfn) 434 { 435 struct page *page; 436 /* 437 * We can only access pages that the kernel maps 438 * as memory. Bail out for unmapped ones. 439 */ 440 if (!pfn_valid(pfn)) 441 return; 442 443 /* Clear i-cache for new pages */ 444 page = pfn_to_page(pfn); 445 if (!test_bit(PG_arch_1, &page->flags)) { 446 flush_dcache_icache_page(page); 447 set_bit(PG_arch_1, &page->flags); 448 } 449 } 450 451 /* 452 * Please call after prepare_to_enter. This function puts the lazy ee and irq 453 * disabled tracking state back to normal mode, without actually enabling 454 * interrupts. 455 */ 456 static inline void kvmppc_fix_ee_before_entry(void) 457 { 458 trace_hardirqs_on(); 459 460 #ifdef CONFIG_PPC64 461 /* 462 * To avoid races, the caller must have gone directly from having 463 * interrupts fully-enabled to hard-disabled. 464 */ 465 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 466 467 /* Only need to enable IRQs by hard enabling them after this */ 468 local_paca->irq_happened = 0; 469 local_paca->soft_enabled = 1; 470 #endif 471 } 472 473 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 474 { 475 ulong ea; 476 ulong msr_64bit = 0; 477 478 ea = kvmppc_get_gpr(vcpu, rb); 479 if (ra) 480 ea += kvmppc_get_gpr(vcpu, ra); 481 482 #if defined(CONFIG_PPC_BOOK3E_64) 483 msr_64bit = MSR_CM; 484 #elif defined(CONFIG_PPC_BOOK3S_64) 485 msr_64bit = MSR_SF; 486 #endif 487 488 if (!(vcpu->arch.shared->msr & msr_64bit)) 489 ea = (uint32_t)ea; 490 491 return ea; 492 } 493 494 extern void xics_wake_cpu(int cpu); 495 496 #endif /* __POWERPC_KVM_PPC_H__ */ 497