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 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE]; 94 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG]; 95 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE]; 96 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG]; 97 int hpte_cache_count; 98 spinlock_t mmu_lock; 99 }; 100 101 #define CONTEXT_HOST 0 102 #define CONTEXT_GUEST 1 103 #define CONTEXT_GUEST_END 2 104 105 #define VSID_REAL 0x1fffffffffc00000ULL 106 #define VSID_BAT 0x1fffffffffb00000ULL 107 #define VSID_REAL_DR 0x2000000000000000ULL 108 #define VSID_REAL_IR 0x4000000000000000ULL 109 #define VSID_PR 0x8000000000000000ULL 110 111 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask); 112 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask); 113 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end); 114 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr); 115 extern void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr); 116 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu); 117 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu); 118 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu); 119 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte); 120 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr); 121 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu); 122 123 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 124 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu); 125 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu); 126 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu); 127 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 128 extern int kvmppc_mmu_hpte_sysinit(void); 129 extern void kvmppc_mmu_hpte_sysexit(void); 130 extern int kvmppc_mmu_hv_init(void); 131 132 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 133 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 134 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec); 135 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags); 136 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, 137 bool upper, u32 val); 138 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr); 139 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu); 140 extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); 141 142 extern void kvmppc_handler_lowmem_trampoline(void); 143 extern void kvmppc_handler_trampoline_enter(void); 144 extern void kvmppc_rmcall(ulong srr0, ulong srr1); 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); 151 152 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) 153 { 154 return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu); 155 } 156 157 extern void kvm_return_point(void); 158 159 /* Also add subarch specific defines */ 160 161 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 162 #include <asm/kvm_book3s_32.h> 163 #endif 164 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 165 #include <asm/kvm_book3s_64.h> 166 #endif 167 168 #ifdef CONFIG_KVM_BOOK3S_PR 169 170 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 171 { 172 return to_book3s(vcpu)->hior; 173 } 174 175 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 176 unsigned long pending_now, unsigned long old_pending) 177 { 178 if (pending_now) 179 vcpu->arch.shared->int_pending = 1; 180 else if (old_pending) 181 vcpu->arch.shared->int_pending = 0; 182 } 183 184 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 185 { 186 if ( num < 14 ) { 187 to_svcpu(vcpu)->gpr[num] = val; 188 to_book3s(vcpu)->shadow_vcpu->gpr[num] = val; 189 } else 190 vcpu->arch.gpr[num] = val; 191 } 192 193 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 194 { 195 if ( num < 14 ) 196 return to_svcpu(vcpu)->gpr[num]; 197 else 198 return vcpu->arch.gpr[num]; 199 } 200 201 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 202 { 203 to_svcpu(vcpu)->cr = val; 204 to_book3s(vcpu)->shadow_vcpu->cr = val; 205 } 206 207 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 208 { 209 return to_svcpu(vcpu)->cr; 210 } 211 212 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 213 { 214 to_svcpu(vcpu)->xer = val; 215 to_book3s(vcpu)->shadow_vcpu->xer = val; 216 } 217 218 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 219 { 220 return to_svcpu(vcpu)->xer; 221 } 222 223 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 224 { 225 to_svcpu(vcpu)->ctr = val; 226 } 227 228 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 229 { 230 return to_svcpu(vcpu)->ctr; 231 } 232 233 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 234 { 235 to_svcpu(vcpu)->lr = val; 236 } 237 238 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 239 { 240 return to_svcpu(vcpu)->lr; 241 } 242 243 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 244 { 245 to_svcpu(vcpu)->pc = val; 246 } 247 248 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 249 { 250 return to_svcpu(vcpu)->pc; 251 } 252 253 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 254 { 255 ulong pc = kvmppc_get_pc(vcpu); 256 struct kvmppc_book3s_shadow_vcpu *svcpu = to_svcpu(vcpu); 257 258 /* Load the instruction manually if it failed to do so in the 259 * exit path */ 260 if (svcpu->last_inst == KVM_INST_FETCH_FAILED) 261 kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false); 262 263 return svcpu->last_inst; 264 } 265 266 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 267 { 268 return to_svcpu(vcpu)->fault_dar; 269 } 270 271 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 272 { 273 ulong crit_raw = vcpu->arch.shared->critical; 274 ulong crit_r1 = kvmppc_get_gpr(vcpu, 1); 275 bool crit; 276 277 /* Truncate crit indicators in 32 bit mode */ 278 if (!(vcpu->arch.shared->msr & MSR_SF)) { 279 crit_raw &= 0xffffffff; 280 crit_r1 &= 0xffffffff; 281 } 282 283 /* Critical section when crit == r1 */ 284 crit = (crit_raw == crit_r1); 285 /* ... and we're in supervisor mode */ 286 crit = crit && !(vcpu->arch.shared->msr & MSR_PR); 287 288 return crit; 289 } 290 #else /* CONFIG_KVM_BOOK3S_PR */ 291 292 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 293 { 294 return 0; 295 } 296 297 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 298 unsigned long pending_now, unsigned long old_pending) 299 { 300 } 301 302 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 303 { 304 vcpu->arch.gpr[num] = val; 305 } 306 307 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 308 { 309 return vcpu->arch.gpr[num]; 310 } 311 312 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 313 { 314 vcpu->arch.cr = val; 315 } 316 317 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 318 { 319 return vcpu->arch.cr; 320 } 321 322 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 323 { 324 vcpu->arch.xer = val; 325 } 326 327 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 328 { 329 return vcpu->arch.xer; 330 } 331 332 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 333 { 334 vcpu->arch.ctr = val; 335 } 336 337 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 338 { 339 return vcpu->arch.ctr; 340 } 341 342 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 343 { 344 vcpu->arch.lr = val; 345 } 346 347 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 348 { 349 return vcpu->arch.lr; 350 } 351 352 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 353 { 354 vcpu->arch.pc = val; 355 } 356 357 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 358 { 359 return vcpu->arch.pc; 360 } 361 362 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 363 { 364 ulong pc = kvmppc_get_pc(vcpu); 365 366 /* Load the instruction manually if it failed to do so in the 367 * exit path */ 368 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 369 kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false); 370 371 return vcpu->arch.last_inst; 372 } 373 374 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 375 { 376 return vcpu->arch.fault_dar; 377 } 378 379 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 380 { 381 return false; 382 } 383 #endif 384 385 /* Magic register values loaded into r3 and r4 before the 'sc' assembly 386 * instruction for the OSI hypercalls */ 387 #define OSI_SC_MAGIC_R3 0x113724FA 388 #define OSI_SC_MAGIC_R4 0x77810F9B 389 390 #define INS_DCBZ 0x7c0007ec 391 392 #endif /* __ASM_KVM_BOOK3S_H__ */ 393