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_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__ */