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 0x0fffffffffc00000ULL 111 #define VSID_BAT 0x0fffffffffb00000ULL 112 #define VSID_1T 0x1000000000000000ULL 113 #define VSID_REAL_DR 0x2000000000000000ULL 114 #define VSID_REAL_IR 0x4000000000000000ULL 115 #define VSID_PR 0x8000000000000000ULL 116 117 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask); 118 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask); 119 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end); 120 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr); 121 extern void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr); 122 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu); 123 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu); 124 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu); 125 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte); 126 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr); 127 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size); 128 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu); 129 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run, 130 struct kvm_vcpu *vcpu, unsigned long addr, 131 unsigned long status); 132 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, 133 unsigned long slb_v, unsigned long valid); 134 135 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 136 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu); 137 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu); 138 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu); 139 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 140 extern int kvmppc_mmu_hpte_sysinit(void); 141 extern void kvmppc_mmu_hpte_sysexit(void); 142 extern int kvmppc_mmu_hv_init(void); 143 144 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 145 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 146 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec); 147 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, 148 unsigned int vec); 149 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags); 150 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, 151 bool upper, u32 val); 152 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr); 153 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu); 154 extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); 155 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev, 156 unsigned long *rmap, long pte_index, int realmode); 157 extern void kvmppc_invalidate_hpte(struct kvm *kvm, unsigned long *hptep, 158 unsigned long pte_index); 159 void kvmppc_clear_ref_hpte(struct kvm *kvm, unsigned long *hptep, 160 unsigned long pte_index); 161 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr, 162 unsigned long *nb_ret); 163 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr, 164 unsigned long gpa, bool dirty); 165 extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 166 long pte_index, unsigned long pteh, unsigned long ptel); 167 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, 168 long pte_index, unsigned long pteh, unsigned long ptel, 169 pgd_t *pgdir, bool realmode, unsigned long *idx_ret); 170 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, 171 unsigned long pte_index, unsigned long avpn, 172 unsigned long *hpret); 173 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm, 174 struct kvm_memory_slot *memslot, unsigned long *map); 175 176 extern void kvmppc_entry_trampoline(void); 177 extern void kvmppc_hv_entry_trampoline(void); 178 extern void kvmppc_load_up_fpu(void); 179 extern void kvmppc_load_up_altivec(void); 180 extern void kvmppc_load_up_vsx(void); 181 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst); 182 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst); 183 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd); 184 185 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) 186 { 187 return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu); 188 } 189 190 extern void kvm_return_point(void); 191 192 /* Also add subarch specific defines */ 193 194 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 195 #include <asm/kvm_book3s_32.h> 196 #endif 197 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 198 #include <asm/kvm_book3s_64.h> 199 #endif 200 201 #ifdef CONFIG_KVM_BOOK3S_PR 202 203 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 204 { 205 return to_book3s(vcpu)->hior; 206 } 207 208 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 209 unsigned long pending_now, unsigned long old_pending) 210 { 211 if (pending_now) 212 vcpu->arch.shared->int_pending = 1; 213 else if (old_pending) 214 vcpu->arch.shared->int_pending = 0; 215 } 216 217 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 218 { 219 if ( num < 14 ) { 220 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 221 svcpu->gpr[num] = val; 222 svcpu_put(svcpu); 223 to_book3s(vcpu)->shadow_vcpu->gpr[num] = val; 224 } else 225 vcpu->arch.gpr[num] = val; 226 } 227 228 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 229 { 230 if ( num < 14 ) { 231 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 232 ulong r = svcpu->gpr[num]; 233 svcpu_put(svcpu); 234 return r; 235 } else 236 return vcpu->arch.gpr[num]; 237 } 238 239 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 240 { 241 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 242 svcpu->cr = val; 243 svcpu_put(svcpu); 244 to_book3s(vcpu)->shadow_vcpu->cr = val; 245 } 246 247 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 248 { 249 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 250 u32 r; 251 r = svcpu->cr; 252 svcpu_put(svcpu); 253 return r; 254 } 255 256 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 257 { 258 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 259 svcpu->xer = val; 260 to_book3s(vcpu)->shadow_vcpu->xer = val; 261 svcpu_put(svcpu); 262 } 263 264 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 265 { 266 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 267 u32 r; 268 r = svcpu->xer; 269 svcpu_put(svcpu); 270 return r; 271 } 272 273 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 274 { 275 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 276 svcpu->ctr = val; 277 svcpu_put(svcpu); 278 } 279 280 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 281 { 282 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 283 ulong r; 284 r = svcpu->ctr; 285 svcpu_put(svcpu); 286 return r; 287 } 288 289 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 290 { 291 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 292 svcpu->lr = val; 293 svcpu_put(svcpu); 294 } 295 296 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 297 { 298 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 299 ulong r; 300 r = svcpu->lr; 301 svcpu_put(svcpu); 302 return r; 303 } 304 305 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 306 { 307 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 308 svcpu->pc = val; 309 svcpu_put(svcpu); 310 } 311 312 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 313 { 314 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 315 ulong r; 316 r = svcpu->pc; 317 svcpu_put(svcpu); 318 return r; 319 } 320 321 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 322 { 323 ulong pc = kvmppc_get_pc(vcpu); 324 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 325 u32 r; 326 327 /* Load the instruction manually if it failed to do so in the 328 * exit path */ 329 if (svcpu->last_inst == KVM_INST_FETCH_FAILED) 330 kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false); 331 332 r = svcpu->last_inst; 333 svcpu_put(svcpu); 334 return r; 335 } 336 337 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 338 { 339 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); 340 ulong r; 341 r = svcpu->fault_dar; 342 svcpu_put(svcpu); 343 return r; 344 } 345 346 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 347 { 348 ulong crit_raw = vcpu->arch.shared->critical; 349 ulong crit_r1 = kvmppc_get_gpr(vcpu, 1); 350 bool crit; 351 352 /* Truncate crit indicators in 32 bit mode */ 353 if (!(vcpu->arch.shared->msr & MSR_SF)) { 354 crit_raw &= 0xffffffff; 355 crit_r1 &= 0xffffffff; 356 } 357 358 /* Critical section when crit == r1 */ 359 crit = (crit_raw == crit_r1); 360 /* ... and we're in supervisor mode */ 361 crit = crit && !(vcpu->arch.shared->msr & MSR_PR); 362 363 return crit; 364 } 365 #else /* CONFIG_KVM_BOOK3S_PR */ 366 367 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 368 { 369 return 0; 370 } 371 372 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 373 unsigned long pending_now, unsigned long old_pending) 374 { 375 } 376 377 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 378 { 379 vcpu->arch.gpr[num] = val; 380 } 381 382 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 383 { 384 return vcpu->arch.gpr[num]; 385 } 386 387 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 388 { 389 vcpu->arch.cr = val; 390 } 391 392 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 393 { 394 return vcpu->arch.cr; 395 } 396 397 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 398 { 399 vcpu->arch.xer = val; 400 } 401 402 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 403 { 404 return vcpu->arch.xer; 405 } 406 407 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 408 { 409 vcpu->arch.ctr = val; 410 } 411 412 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 413 { 414 return vcpu->arch.ctr; 415 } 416 417 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 418 { 419 vcpu->arch.lr = val; 420 } 421 422 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 423 { 424 return vcpu->arch.lr; 425 } 426 427 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 428 { 429 vcpu->arch.pc = val; 430 } 431 432 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 433 { 434 return vcpu->arch.pc; 435 } 436 437 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 438 { 439 ulong pc = kvmppc_get_pc(vcpu); 440 441 /* Load the instruction manually if it failed to do so in the 442 * exit path */ 443 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 444 kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false); 445 446 return vcpu->arch.last_inst; 447 } 448 449 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 450 { 451 return vcpu->arch.fault_dar; 452 } 453 454 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 455 { 456 return false; 457 } 458 #endif 459 460 /* Magic register values loaded into r3 and r4 before the 'sc' assembly 461 * instruction for the OSI hypercalls */ 462 #define OSI_SC_MAGIC_R3 0x113724FA 463 #define OSI_SC_MAGIC_R4 0x77810F9B 464 465 #define INS_DCBZ 0x7c0007ec 466 /* TO = 31 for unconditional trap */ 467 #define INS_TW 0x7fe00008 468 469 /* LPIDs we support with this build -- runtime limit may be lower */ 470 #define KVMPPC_NR_LPIDS (LPID_RSVD + 1) 471 472 #endif /* __ASM_KVM_BOOK3S_H__ */ 473