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