arch/powerpc/include/asm/kvm_book3s.h

   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       0x1fffffffffc00000ULL
 111 #define VSID_BAT        0x1fffffffffb00000ULL
 112 #define VSID_REAL_DR    0x2000000000000000ULL
 113 #define VSID_REAL_IR    0x4000000000000000ULL
 114 #define VSID_PR         0x8000000000000000ULL
 115
 116 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
 117 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
 118 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
 119 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
 120 extern void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr);
 121 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
 122 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
 123 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
 124 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
 125 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
 126 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
 127 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
 128                         struct kvm_vcpu *vcpu, unsigned long addr,
 129                         unsigned long status);
 130 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
 131                         unsigned long slb_v, unsigned long valid);
 132
 133 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
 134 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
 135 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
 136 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
 137 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
 138 extern int kvmppc_mmu_hpte_sysinit(void);
 139 extern void kvmppc_mmu_hpte_sysexit(void);
 140 extern int kvmppc_mmu_hv_init(void);
 141
 142 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
 143 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
 144 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
 145 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
 146 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
 147                            bool upper, u32 val);
 148 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
 149 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
 150 extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn);
 151 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
 152                         unsigned long *rmap, long pte_index, int realmode);
 153 extern void kvmppc_invalidate_hpte(struct kvm *kvm, unsigned long *hptep,
 154                         unsigned long pte_index);
 155 void kvmppc_clear_ref_hpte(struct kvm *kvm, unsigned long *hptep,
 156                         unsigned long pte_index);
 157 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
 158                         unsigned long *nb_ret);
 159 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr);
 160 extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
 161                         long pte_index, unsigned long pteh, unsigned long ptel);
 162 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
 163                         long pte_index, unsigned long pteh, unsigned long ptel,
 164                         pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
 165 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
 166                         unsigned long pte_index, unsigned long avpn,
 167                         unsigned long *hpret);
 168 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
 169                         struct kvm_memory_slot *memslot, unsigned long *map);
 170
 171 extern void kvmppc_entry_trampoline(void);
 172 extern void kvmppc_hv_entry_trampoline(void);
 173 extern void kvmppc_load_up_fpu(void);
 174 extern void kvmppc_load_up_altivec(void);
 175 extern void kvmppc_load_up_vsx(void);
 176 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
 177 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
 178 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
 179
 180 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
 181 {
 182         return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
 183 }
 184
 185 extern void kvm_return_point(void);
 186
 187 /* Also add subarch specific defines */
 188
 189 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 190 #include <asm/kvm_book3s_32.h>
 191 #endif
 192 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
 193 #include <asm/kvm_book3s_64.h>
 194 #endif
 195
 196 #ifdef CONFIG_KVM_BOOK3S_PR
 197
 198 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
 199 {
 200         return to_book3s(vcpu)->hior;
 201 }
 202
 203 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
 204                         unsigned long pending_now, unsigned long old_pending)
 205 {
 206         if (pending_now)
 207                 vcpu->arch.shared->int_pending = 1;
 208         else if (old_pending)
 209                 vcpu->arch.shared->int_pending = 0;
 210 }
 211
 212 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
 213 {
 214         if ( num < 14 ) {
 215                 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 216                 svcpu->gpr[num] = val;
 217                 svcpu_put(svcpu);
 218                 to_book3s(vcpu)->shadow_vcpu->gpr[num] = val;
 219         } else
 220                 vcpu->arch.gpr[num] = val;
 221 }
 222
 223 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
 224 {
 225         if ( num < 14 ) {
 226                 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 227                 ulong r = svcpu->gpr[num];
 228                 svcpu_put(svcpu);
 229                 return r;
 230         } else
 231                 return vcpu->arch.gpr[num];
 232 }
 233
 234 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
 235 {
 236         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 237         svcpu->cr = val;
 238         svcpu_put(svcpu);
 239         to_book3s(vcpu)->shadow_vcpu->cr = val;
 240 }
 241
 242 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
 243 {
 244         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 245         u32 r;
 246         r = svcpu->cr;
 247         svcpu_put(svcpu);
 248         return r;
 249 }
 250
 251 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
 252 {
 253         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 254         svcpu->xer = val;
 255         to_book3s(vcpu)->shadow_vcpu->xer = val;
 256         svcpu_put(svcpu);
 257 }
 258
 259 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
 260 {
 261         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 262         u32 r;
 263         r = svcpu->xer;
 264         svcpu_put(svcpu);
 265         return r;
 266 }
 267
 268 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
 269 {
 270         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 271         svcpu->ctr = val;
 272         svcpu_put(svcpu);
 273 }
 274
 275 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
 276 {
 277         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 278         ulong r;
 279         r = svcpu->ctr;
 280         svcpu_put(svcpu);
 281         return r;
 282 }
 283
 284 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
 285 {
 286         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 287         svcpu->lr = val;
 288         svcpu_put(svcpu);
 289 }
 290
 291 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
 292 {
 293         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 294         ulong r;
 295         r = svcpu->lr;
 296         svcpu_put(svcpu);
 297         return r;
 298 }
 299
 300 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
 301 {
 302         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 303         svcpu->pc = val;
 304         svcpu_put(svcpu);
 305 }
 306
 307 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
 308 {
 309         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 310         ulong r;
 311         r = svcpu->pc;
 312         svcpu_put(svcpu);
 313         return r;
 314 }
 315
 316 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
 317 {
 318         ulong pc = kvmppc_get_pc(vcpu);
 319         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 320         u32 r;
 321
 322         /* Load the instruction manually if it failed to do so in the
 323          * exit path */
 324         if (svcpu->last_inst == KVM_INST_FETCH_FAILED)
 325                 kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false);
 326
 327         r = svcpu->last_inst;
 328         svcpu_put(svcpu);
 329         return r;
 330 }
 331
 332 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
 333 {
 334         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 335         ulong r;
 336         r = svcpu->fault_dar;
 337         svcpu_put(svcpu);
 338         return r;
 339 }
 340
 341 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
 342 {
 343         ulong crit_raw = vcpu->arch.shared->critical;
 344         ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
 345         bool crit;
 346
 347         /* Truncate crit indicators in 32 bit mode */
 348         if (!(vcpu->arch.shared->msr & MSR_SF)) {
 349                 crit_raw &= 0xffffffff;
 350                 crit_r1 &= 0xffffffff;
 351         }
 352
 353         /* Critical section when crit == r1 */
 354         crit = (crit_raw == crit_r1);
 355         /* ... and we're in supervisor mode */
 356         crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
 357
 358         return crit;
 359 }
 360 #else /* CONFIG_KVM_BOOK3S_PR */
 361
 362 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
 363 {
 364         return 0;
 365 }
 366
 367 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
 368                         unsigned long pending_now, unsigned long old_pending)
 369 {
 370 }
 371
 372 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
 373 {
 374         vcpu->arch.gpr[num] = val;
 375 }
 376
 377 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
 378 {
 379         return vcpu->arch.gpr[num];
 380 }
 381
 382 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
 383 {
 384         vcpu->arch.cr = val;
 385 }
 386
 387 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
 388 {
 389         return vcpu->arch.cr;
 390 }
 391
 392 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
 393 {
 394         vcpu->arch.xer = val;
 395 }
 396
 397 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
 398 {
 399         return vcpu->arch.xer;
 400 }
 401
 402 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
 403 {
 404         vcpu->arch.ctr = val;
 405 }
 406
 407 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
 408 {
 409         return vcpu->arch.ctr;
 410 }
 411
 412 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
 413 {
 414         vcpu->arch.lr = val;
 415 }
 416
 417 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
 418 {
 419         return vcpu->arch.lr;
 420 }
 421
 422 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
 423 {
 424         vcpu->arch.pc = val;
 425 }
 426
 427 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
 428 {
 429         return vcpu->arch.pc;
 430 }
 431
 432 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
 433 {
 434         ulong pc = kvmppc_get_pc(vcpu);
 435
 436         /* Load the instruction manually if it failed to do so in the
 437          * exit path */
 438         if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
 439                 kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false);
 440
 441         return vcpu->arch.last_inst;
 442 }
 443
 444 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
 445 {
 446         return vcpu->arch.fault_dar;
 447 }
 448
 449 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
 450 {
 451         return false;
 452 }
 453 #endif
 454
 455 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
 456  * instruction for the OSI hypercalls */
 457 #define OSI_SC_MAGIC_R3                 0x113724FA
 458 #define OSI_SC_MAGIC_R4                 0x77810F9B
 459
 460 #define INS_DCBZ                        0x7c0007ec
 461
 462 /* LPIDs we support with this build -- runtime limit may be lower */
 463 #define KVMPPC_NR_LPIDS                 (LPID_RSVD + 1)
 464
 465 #endif /* __ASM_KVM_BOOK3S_H__ */