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