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 SUSE Linux Products GmbH 2009 16 * 17 * Authors: Alexander Graf <agraf@suse.de> 18 */ 19 20 #ifndef __ASM_KVM_BOOK3S_H__ 21 #define __ASM_KVM_BOOK3S_H__ 22 23 #include <linux/types.h> 24 #include <linux/kvm_host.h> 25 #include <asm/kvm_book3s_asm.h> 26 27 struct kvmppc_bat { 28 u64 raw; 29 u32 bepi; 30 u32 bepi_mask; 31 u32 brpn; 32 u8 wimg; 33 u8 pp; 34 bool vs : 1; 35 bool vp : 1; 36 }; 37 38 struct kvmppc_sid_map { 39 u64 guest_vsid; 40 u64 guest_esid; 41 u64 host_vsid; 42 bool valid : 1; 43 }; 44 45 #define SID_MAP_BITS 9 46 #define SID_MAP_NUM (1 << SID_MAP_BITS) 47 #define SID_MAP_MASK (SID_MAP_NUM - 1) 48 49 #ifdef CONFIG_PPC_BOOK3S_64 50 #define SID_CONTEXTS 1 51 #else 52 #define SID_CONTEXTS 128 53 #define VSID_POOL_SIZE (SID_CONTEXTS * 16) 54 #endif 55 56 struct hpte_cache { 57 struct hlist_node list_pte; 58 struct hlist_node list_pte_long; 59 struct hlist_node list_vpte; 60 struct hlist_node list_vpte_long; 61 struct rcu_head rcu_head; 62 u64 host_vpn; 63 u64 pfn; 64 ulong slot; 65 struct kvmppc_pte pte; 66 }; 67 68 struct kvmppc_vcpu_book3s { 69 struct kvm_vcpu vcpu; 70 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu; 71 struct kvmppc_sid_map sid_map[SID_MAP_NUM]; 72 struct { 73 u64 esid; 74 u64 vsid; 75 } slb_shadow[64]; 76 u8 slb_shadow_max; 77 struct kvmppc_bat ibat[8]; 78 struct kvmppc_bat dbat[8]; 79 u64 hid[6]; 80 u64 gqr[8]; 81 u64 sdr1; 82 u64 hior; 83 u64 msr_mask; 84 u64 purr_offset; 85 u64 spurr_offset; 86 #ifdef CONFIG_PPC_BOOK3S_32 87 u32 vsid_pool[VSID_POOL_SIZE]; 88 u32 vsid_next; 89 #else 90 u64 proto_vsid_first; 91 u64 proto_vsid_max; 92 u64 proto_vsid_next; 93 #endif 94 int context_id[SID_CONTEXTS]; 95 96 bool hior_explicit; /* HIOR is set by ioctl, not PVR */ 97 98 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE]; 99 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG]; 100 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE]; 101 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG]; 102 int hpte_cache_count; 103 spinlock_t mmu_lock; 104 }; 105 106 #define CONTEXT_HOST 0 107 #define CONTEXT_GUEST 1 108 #define CONTEXT_GUEST_END 2 109 110 #define VSID_REAL 0x1fffffffffc00000ULL 111 #define VSID_BAT 0x1fffffffffb00000ULL 112 #define VSID_REAL_DR 0x2000000000000000ULL 113 #define VSID_REAL_IR 0x4000000000000000ULL 114 #define VSID_PR 0x8000000000000000ULL 115 116 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask); 117 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask); 118 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end); 119 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr); 120 extern void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr); 121 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu); 122 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu); 123 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu); 124 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte); 125 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr); 126 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu); 127 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run, 128 struct kvm_vcpu *vcpu, unsigned long addr, 129 unsigned long status); 130 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, 131 unsigned long slb_v, unsigned long valid); 132 133 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 134 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu); 135 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu); 136 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu); 137 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 138 extern int kvmppc_mmu_hpte_sysinit(void); 139 extern void kvmppc_mmu_hpte_sysexit(void); 140 extern int kvmppc_mmu_hv_init(void); 141 142 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 143 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 144 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec); 145 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, 146 unsigned int vec); 147 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags); 148 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, 149 bool upper, u32 val); 150 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr); 151 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu); 152 extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); 153 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev, 154 unsigned long *rmap, long pte_index, int realmode); 155 extern void kvmppc_invalidate_hpte(struct kvm *kvm, unsigned long *hptep, 156 unsigned long pte_index); 157 void kvmppc_clear_ref_hpte(struct kvm *kvm, unsigned long *hptep, 158 unsigned long pte_index); 159 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr, 160 unsigned long *nb_ret); 161 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr, 162 unsigned long gpa, bool dirty); 163 extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 164 long pte_index, unsigned long pteh, unsigned long ptel); 165 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, 166 long pte_index, unsigned long pteh, unsigned long ptel, 167 pgd_t *pgdir, bool realmode, unsigned long *idx_ret); 168 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, 169 unsigned long pte_index, unsigned long avpn, 170 unsigned long *hpret); 171 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm, 172 struct kvm_memory_slot *memslot, unsigned long *map); 173 174 extern void kvmppc_entry_trampoline(void); 175 extern void kvmppc_hv_entry_trampoline(void); 176 extern void kvmppc_load_up_fpu(void); 177 extern void kvmppc_load_up_altivec(void); 178 extern void kvmppc_load_up_vsx(void); 179 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst); 180 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst); 181 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd); 182 183 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) 184 { 185 return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu); 186 } 187 188 extern void kvm_return_point(void); 189 190 /* Also add subarch specific defines */ 191 192 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 193 #include <asm/kvm_book3s_32.h> 194 #endif 195 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 196 #include <asm/kvm_book3s_64.h> 197 #endif 198 199 #ifdef CONFIG_KVM_BOOK3S_PR 200 201 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 202 { 203 return to_book3s(vcpu)->hior; 204 } 205 206 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 207 unsigned long pending_now, unsigned long old_pending) 208 { 209 if (pending_now) 210 vcpu->arch.shared->int_pending = 1; 211 else if (old_pending) 212 vcpu->arch.shared->int_pending = 0; 213 } 214 215 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 216 { 217 if ( num < 14 ) { 218 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 219 svcpu->gpr[num] = val; 220 svcpu_put(svcpu); 221 to_book3s(vcpu)->shadow_vcpu->gpr[num] = val; 222 } else 223 vcpu->arch.gpr[num] = val; 224 } 225 226 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 227 { 228 if ( num < 14 ) { 229 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 230 ulong r = svcpu->gpr[num]; 231 svcpu_put(svcpu); 232 return r; 233 } else 234 return vcpu->arch.gpr[num]; 235 } 236 237 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 238 { 239 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 240 svcpu->cr = val; 241 svcpu_put(svcpu); 242 to_book3s(vcpu)->shadow_vcpu->cr = val; 243 } 244 245 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 246 { 247 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 248 u32 r; 249 r = svcpu->cr; 250 svcpu_put(svcpu); 251 return r; 252 } 253 254 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 255 { 256 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 257 svcpu->xer = val; 258 to_book3s(vcpu)->shadow_vcpu->xer = val; 259 svcpu_put(svcpu); 260 } 261 262 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 263 { 264 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 265 u32 r; 266 r = svcpu->xer; 267 svcpu_put(svcpu); 268 return r; 269 } 270 271 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 272 { 273 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 274 svcpu->ctr = val; 275 svcpu_put(svcpu); 276 } 277 278 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 279 { 280 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 281 ulong r; 282 r = svcpu->ctr; 283 svcpu_put(svcpu); 284 return r; 285 } 286 287 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 288 { 289 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 290 svcpu->lr = val; 291 svcpu_put(svcpu); 292 } 293 294 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 295 { 296 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 297 ulong r; 298 r = svcpu->lr; 299 svcpu_put(svcpu); 300 return r; 301 } 302 303 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 304 { 305 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 306 svcpu->pc = val; 307 svcpu_put(svcpu); 308 } 309 310 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 311 { 312 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 313 ulong r; 314 r = svcpu->pc; 315 svcpu_put(svcpu); 316 return r; 317 } 318 319 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 320 { 321 ulong pc = kvmppc_get_pc(vcpu); 322 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 323 u32 r; 324 325 /* Load the instruction manually if it failed to do so in the 326 * exit path */ 327 if (svcpu->last_inst == KVM_INST_FETCH_FAILED) 328 kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false); 329 330 r = svcpu->last_inst; 331 svcpu_put(svcpu); 332 return r; 333 } 334 335 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 336 { 337 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 338 ulong r; 339 r = svcpu->fault_dar; 340 svcpu_put(svcpu); 341 return r; 342 } 343 344 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 345 { 346 ulong crit_raw = vcpu->arch.shared->critical; 347 ulong crit_r1 = kvmppc_get_gpr(vcpu, 1); 348 bool crit; 349 350 /* Truncate crit indicators in 32 bit mode */ 351 if (!(vcpu->arch.shared->msr & MSR_SF)) { 352 crit_raw &= 0xffffffff; 353 crit_r1 &= 0xffffffff; 354 } 355 356 /* Critical section when crit == r1 */ 357 crit = (crit_raw == crit_r1); 358 /* ... and we're in supervisor mode */ 359 crit = crit && !(vcpu->arch.shared->msr & MSR_PR); 360 361 return crit; 362 } 363 #else /* CONFIG_KVM_BOOK3S_PR */ 364 365 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 366 { 367 return 0; 368 } 369 370 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 371 unsigned long pending_now, unsigned long old_pending) 372 { 373 } 374 375 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 376 { 377 vcpu->arch.gpr[num] = val; 378 } 379 380 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 381 { 382 return vcpu->arch.gpr[num]; 383 } 384 385 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 386 { 387 vcpu->arch.cr = val; 388 } 389 390 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 391 { 392 return vcpu->arch.cr; 393 } 394 395 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 396 { 397 vcpu->arch.xer = val; 398 } 399 400 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 401 { 402 return vcpu->arch.xer; 403 } 404 405 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 406 { 407 vcpu->arch.ctr = val; 408 } 409 410 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 411 { 412 return vcpu->arch.ctr; 413 } 414 415 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 416 { 417 vcpu->arch.lr = val; 418 } 419 420 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 421 { 422 return vcpu->arch.lr; 423 } 424 425 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 426 { 427 vcpu->arch.pc = val; 428 } 429 430 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 431 { 432 return vcpu->arch.pc; 433 } 434 435 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 436 { 437 ulong pc = kvmppc_get_pc(vcpu); 438 439 /* Load the instruction manually if it failed to do so in the 440 * exit path */ 441 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 442 kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false); 443 444 return vcpu->arch.last_inst; 445 } 446 447 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 448 { 449 return vcpu->arch.fault_dar; 450 } 451 452 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 453 { 454 return false; 455 } 456 #endif 457 458 /* Magic register values loaded into r3 and r4 before the 'sc' assembly 459 * instruction for the OSI hypercalls */ 460 #define OSI_SC_MAGIC_R3 0x113724FA 461 #define OSI_SC_MAGIC_R4 0x77810F9B 462 463 #define INS_DCBZ 0x7c0007ec 464 /* TO = 31 for unconditional trap */ 465 #define INS_TW 0x7fe00008 466 467 /* LPIDs we support with this build -- runtime limit may be lower */ 468 #define KVMPPC_NR_LPIDS (LPID_RSVD + 1) 469 470 #endif /* __ASM_KVM_BOOK3S_H__ */ 471