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