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_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 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
 142                         unsigned long *nb_ret);
 143 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr);
 144
 145 extern void kvmppc_entry_trampoline(void);
 146 extern void kvmppc_hv_entry_trampoline(void);
 147 extern void kvmppc_load_up_fpu(void);
 148 extern void kvmppc_load_up_altivec(void);
 149 extern void kvmppc_load_up_vsx(void);
 150 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
 151 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
 152 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
 153
 154 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
 155 {
 156         return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
 157 }
 158
 159 extern void kvm_return_point(void);
 160
 161 /* Also add subarch specific defines */
 162
 163 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 164 #include <asm/kvm_book3s_32.h>
 165 #endif
 166 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
 167 #include <asm/kvm_book3s_64.h>
 168 #endif
 169
 170 #ifdef CONFIG_KVM_BOOK3S_PR
 171
 172 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
 173 {
 174         return to_book3s(vcpu)->hior;
 175 }
 176
 177 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
 178                         unsigned long pending_now, unsigned long old_pending)
 179 {
 180         if (pending_now)
 181                 vcpu->arch.shared->int_pending = 1;
 182         else if (old_pending)
 183                 vcpu->arch.shared->int_pending = 0;
 184 }
 185
 186 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
 187 {
 188         if ( num < 14 ) {
 189                 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 190                 svcpu->gpr[num] = val;
 191                 svcpu_put(svcpu);
 192                 to_book3s(vcpu)->shadow_vcpu->gpr[num] = val;
 193         } else
 194                 vcpu->arch.gpr[num] = val;
 195 }
 196
 197 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
 198 {
 199         if ( num < 14 ) {
 200                 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 201                 ulong r = svcpu->gpr[num];
 202                 svcpu_put(svcpu);
 203                 return r;
 204         } else
 205                 return vcpu->arch.gpr[num];
 206 }
 207
 208 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
 209 {
 210         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 211         svcpu->cr = val;
 212         svcpu_put(svcpu);
 213         to_book3s(vcpu)->shadow_vcpu->cr = val;
 214 }
 215
 216 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
 217 {
 218         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 219         u32 r;
 220         r = svcpu->cr;
 221         svcpu_put(svcpu);
 222         return r;
 223 }
 224
 225 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
 226 {
 227         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 228         svcpu->xer = val;
 229         to_book3s(vcpu)->shadow_vcpu->xer = val;
 230         svcpu_put(svcpu);
 231 }
 232
 233 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
 234 {
 235         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 236         u32 r;
 237         r = svcpu->xer;
 238         svcpu_put(svcpu);
 239         return r;
 240 }
 241
 242 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
 243 {
 244         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 245         svcpu->ctr = val;
 246         svcpu_put(svcpu);
 247 }
 248
 249 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
 250 {
 251         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 252         ulong r;
 253         r = svcpu->ctr;
 254         svcpu_put(svcpu);
 255         return r;
 256 }
 257
 258 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
 259 {
 260         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 261         svcpu->lr = val;
 262         svcpu_put(svcpu);
 263 }
 264
 265 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
 266 {
 267         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 268         ulong r;
 269         r = svcpu->lr;
 270         svcpu_put(svcpu);
 271         return r;
 272 }
 273
 274 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
 275 {
 276         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 277         svcpu->pc = val;
 278         svcpu_put(svcpu);
 279 }
 280
 281 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
 282 {
 283         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 284         ulong r;
 285         r = svcpu->pc;
 286         svcpu_put(svcpu);
 287         return r;
 288 }
 289
 290 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
 291 {
 292         ulong pc = kvmppc_get_pc(vcpu);
 293         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 294         u32 r;
 295
 296         /* Load the instruction manually if it failed to do so in the
 297          * exit path */
 298         if (svcpu->last_inst == KVM_INST_FETCH_FAILED)
 299                 kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false);
 300
 301         r = svcpu->last_inst;
 302         svcpu_put(svcpu);
 303         return r;
 304 }
 305
 306 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
 307 {
 308         struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
 309         ulong r;
 310         r = svcpu->fault_dar;
 311         svcpu_put(svcpu);
 312         return r;
 313 }
 314
 315 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
 316 {
 317         ulong crit_raw = vcpu->arch.shared->critical;
 318         ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
 319         bool crit;
 320
 321         /* Truncate crit indicators in 32 bit mode */
 322         if (!(vcpu->arch.shared->msr & MSR_SF)) {
 323                 crit_raw &= 0xffffffff;
 324                 crit_r1 &= 0xffffffff;
 325         }
 326
 327         /* Critical section when crit == r1 */
 328         crit = (crit_raw == crit_r1);
 329         /* ... and we're in supervisor mode */
 330         crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
 331
 332         return crit;
 333 }
 334 #else /* CONFIG_KVM_BOOK3S_PR */
 335
 336 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
 337 {
 338         return 0;
 339 }
 340
 341 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
 342                         unsigned long pending_now, unsigned long old_pending)
 343 {
 344 }
 345
 346 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
 347 {
 348         vcpu->arch.gpr[num] = val;
 349 }
 350
 351 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
 352 {
 353         return vcpu->arch.gpr[num];
 354 }
 355
 356 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
 357 {
 358         vcpu->arch.cr = val;
 359 }
 360
 361 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
 362 {
 363         return vcpu->arch.cr;
 364 }
 365
 366 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
 367 {
 368         vcpu->arch.xer = val;
 369 }
 370
 371 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
 372 {
 373         return vcpu->arch.xer;
 374 }
 375
 376 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
 377 {
 378         vcpu->arch.ctr = val;
 379 }
 380
 381 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
 382 {
 383         return vcpu->arch.ctr;
 384 }
 385
 386 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
 387 {
 388         vcpu->arch.lr = val;
 389 }
 390
 391 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
 392 {
 393         return vcpu->arch.lr;
 394 }
 395
 396 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
 397 {
 398         vcpu->arch.pc = val;
 399 }
 400
 401 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
 402 {
 403         return vcpu->arch.pc;
 404 }
 405
 406 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
 407 {
 408         ulong pc = kvmppc_get_pc(vcpu);
 409
 410         /* Load the instruction manually if it failed to do so in the
 411          * exit path */
 412         if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
 413                 kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false);
 414
 415         return vcpu->arch.last_inst;
 416 }
 417
 418 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
 419 {
 420         return vcpu->arch.fault_dar;
 421 }
 422
 423 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
 424 {
 425         return false;
 426 }
 427 #endif
 428
 429 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
 430  * instruction for the OSI hypercalls */
 431 #define OSI_SC_MAGIC_R3                 0x113724FA
 432 #define OSI_SC_MAGIC_R4                 0x77810F9B
 433
 434 #define INS_DCBZ                        0x7c0007ec
 435
 436 #endif /* __ASM_KVM_BOOK3S_H__ */