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 #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, unsigned long *map);
 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__ */