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_sregs; /* HIOR is set by SREGS, 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); 124 125 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 126 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu); 127 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu); 128 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu); 129 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 130 extern int kvmppc_mmu_hpte_sysinit(void); 131 extern void kvmppc_mmu_hpte_sysexit(void); 132 extern int kvmppc_mmu_hv_init(void); 133 134 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 135 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 136 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec); 137 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags); 138 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, 139 bool upper, u32 val); 140 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr); 141 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu); 142 extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); 143 144 extern void kvmppc_entry_trampoline(void); 145 extern void kvmppc_hv_entry_trampoline(void); 146 extern void kvmppc_load_up_fpu(void); 147 extern void kvmppc_load_up_altivec(void); 148 extern void kvmppc_load_up_vsx(void); 149 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst); 150 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst); 151 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd); 152 153 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) 154 { 155 return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu); 156 } 157 158 extern void kvm_return_point(void); 159 160 /* Also add subarch specific defines */ 161 162 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 163 #include <asm/kvm_book3s_32.h> 164 #endif 165 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 166 #include <asm/kvm_book3s_64.h> 167 #endif 168 169 #ifdef CONFIG_KVM_BOOK3S_PR 170 171 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 172 { 173 return to_book3s(vcpu)->hior; 174 } 175 176 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 177 unsigned long pending_now, unsigned long old_pending) 178 { 179 if (pending_now) 180 vcpu->arch.shared->int_pending = 1; 181 else if (old_pending) 182 vcpu->arch.shared->int_pending = 0; 183 } 184 185 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 186 { 187 if ( num < 14 ) { 188 to_svcpu(vcpu)->gpr[num] = val; 189 to_book3s(vcpu)->shadow_vcpu->gpr[num] = val; 190 } else 191 vcpu->arch.gpr[num] = val; 192 } 193 194 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 195 { 196 if ( num < 14 ) 197 return to_svcpu(vcpu)->gpr[num]; 198 else 199 return vcpu->arch.gpr[num]; 200 } 201 202 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 203 { 204 to_svcpu(vcpu)->cr = val; 205 to_book3s(vcpu)->shadow_vcpu->cr = val; 206 } 207 208 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 209 { 210 return to_svcpu(vcpu)->cr; 211 } 212 213 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 214 { 215 to_svcpu(vcpu)->xer = val; 216 to_book3s(vcpu)->shadow_vcpu->xer = val; 217 } 218 219 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 220 { 221 return to_svcpu(vcpu)->xer; 222 } 223 224 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 225 { 226 to_svcpu(vcpu)->ctr = val; 227 } 228 229 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 230 { 231 return to_svcpu(vcpu)->ctr; 232 } 233 234 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 235 { 236 to_svcpu(vcpu)->lr = val; 237 } 238 239 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 240 { 241 return to_svcpu(vcpu)->lr; 242 } 243 244 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 245 { 246 to_svcpu(vcpu)->pc = val; 247 } 248 249 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 250 { 251 return to_svcpu(vcpu)->pc; 252 } 253 254 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 255 { 256 ulong pc = kvmppc_get_pc(vcpu); 257 struct kvmppc_book3s_shadow_vcpu *svcpu = to_svcpu(vcpu); 258 259 /* Load the instruction manually if it failed to do so in the 260 * exit path */ 261 if (svcpu->last_inst == KVM_INST_FETCH_FAILED) 262 kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false); 263 264 return svcpu->last_inst; 265 } 266 267 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 268 { 269 return to_svcpu(vcpu)->fault_dar; 270 } 271 272 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 273 { 274 ulong crit_raw = vcpu->arch.shared->critical; 275 ulong crit_r1 = kvmppc_get_gpr(vcpu, 1); 276 bool crit; 277 278 /* Truncate crit indicators in 32 bit mode */ 279 if (!(vcpu->arch.shared->msr & MSR_SF)) { 280 crit_raw &= 0xffffffff; 281 crit_r1 &= 0xffffffff; 282 } 283 284 /* Critical section when crit == r1 */ 285 crit = (crit_raw == crit_r1); 286 /* ... and we're in supervisor mode */ 287 crit = crit && !(vcpu->arch.shared->msr & MSR_PR); 288 289 return crit; 290 } 291 #else /* CONFIG_KVM_BOOK3S_PR */ 292 293 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 294 { 295 return 0; 296 } 297 298 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 299 unsigned long pending_now, unsigned long old_pending) 300 { 301 } 302 303 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 304 { 305 vcpu->arch.gpr[num] = val; 306 } 307 308 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 309 { 310 return vcpu->arch.gpr[num]; 311 } 312 313 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 314 { 315 vcpu->arch.cr = val; 316 } 317 318 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 319 { 320 return vcpu->arch.cr; 321 } 322 323 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 324 { 325 vcpu->arch.xer = val; 326 } 327 328 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 329 { 330 return vcpu->arch.xer; 331 } 332 333 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 334 { 335 vcpu->arch.ctr = val; 336 } 337 338 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 339 { 340 return vcpu->arch.ctr; 341 } 342 343 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 344 { 345 vcpu->arch.lr = val; 346 } 347 348 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 349 { 350 return vcpu->arch.lr; 351 } 352 353 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 354 { 355 vcpu->arch.pc = val; 356 } 357 358 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 359 { 360 return vcpu->arch.pc; 361 } 362 363 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 364 { 365 ulong pc = kvmppc_get_pc(vcpu); 366 367 /* Load the instruction manually if it failed to do so in the 368 * exit path */ 369 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 370 kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false); 371 372 return vcpu->arch.last_inst; 373 } 374 375 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 376 { 377 return vcpu->arch.fault_dar; 378 } 379 380 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 381 { 382 return false; 383 } 384 #endif 385 386 static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r, 387 unsigned long pte_index) 388 { 389 unsigned long rb, va_low; 390 391 rb = (v & ~0x7fUL) << 16; /* AVA field */ 392 va_low = pte_index >> 3; 393 if (v & HPTE_V_SECONDARY) 394 va_low = ~va_low; 395 /* xor vsid from AVA */ 396 if (!(v & HPTE_V_1TB_SEG)) 397 va_low ^= v >> 12; 398 else 399 va_low ^= v >> 24; 400 va_low &= 0x7ff; 401 if (v & HPTE_V_LARGE) { 402 rb |= 1; /* L field */ 403 if (cpu_has_feature(CPU_FTR_ARCH_206) && 404 (r & 0xff000)) { 405 /* non-16MB large page, must be 64k */ 406 /* (masks depend on page size) */ 407 rb |= 0x1000; /* page encoding in LP field */ 408 rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */ 409 rb |= (va_low & 0xfe); /* AVAL field (P7 doesn't seem to care) */ 410 } 411 } else { 412 /* 4kB page */ 413 rb |= (va_low & 0x7ff) << 12; /* remaining 11b of VA */ 414 } 415 rb |= (v >> 54) & 0x300; /* B field */ 416 return rb; 417 } 418 419 /* Magic register values loaded into r3 and r4 before the 'sc' assembly 420 * instruction for the OSI hypercalls */ 421 #define OSI_SC_MAGIC_R3 0x113724FA 422 #define OSI_SC_MAGIC_R4 0x77810F9B 423 424 #define INS_DCBZ 0x7c0007ec 425 426 #endif /* __ASM_KVM_BOOK3S_H__ */ 427