arch/powerpc/include/asm/kvm_ppc.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 IBM Corp. 2008
  16  *
  17  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
  18  */
  19
  20 #ifndef __POWERPC_KVM_PPC_H__
  21 #define __POWERPC_KVM_PPC_H__
  22
  23 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header
  24  * dependencies. */
  25
  26 #include <linux/mutex.h>
  27 #include <linux/timer.h>
  28 #include <linux/types.h>
  29 #include <linux/kvm_types.h>
  30 #include <linux/kvm_host.h>
  31 #include <linux/bug.h>
  32 #ifdef CONFIG_PPC_BOOK3S
  33 #include <asm/kvm_book3s.h>
  34 #else
  35 #include <asm/kvm_booke.h>
  36 #endif
  37 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
  38 #include <asm/paca.h>
  39 #endif
  40
  41 enum emulation_result {
  42         EMULATE_DONE,         /* no further processing */
  43         EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
  44         EMULATE_DO_DCR,       /* kvm_run filled with DCR request */
  45         EMULATE_FAIL,         /* can't emulate this instruction */
  46         EMULATE_AGAIN,        /* something went wrong. go again */
  47         EMULATE_EXIT_USER,    /* emulation requires exit to user-space */
  48 };
  49
  50 enum instruction_type {
  51         INST_GENERIC,
  52         INST_SC,                /* system call */
  53 };
  54
  55 enum xlate_instdata {
  56         XLATE_INST,             /* translate instruction address */
  57         XLATE_DATA              /* translate data address */
  58 };
  59
  60 enum xlate_readwrite {
  61         XLATE_READ,             /* check for read permissions */
  62         XLATE_WRITE             /* check for write permissions */
  63 };
  64
  65 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  66 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  67 extern void kvmppc_handler_highmem(void);
  68
  69 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
  70 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
  71                               unsigned int rt, unsigned int bytes,
  72                               int is_default_endian);
  73 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
  74                                unsigned int rt, unsigned int bytes,
  75                                int is_default_endian);
  76 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
  77                                u64 val, unsigned int bytes,
  78                                int is_default_endian);
  79
  80 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
  81                                  enum instruction_type type, u32 *inst);
  82
  83 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
  84                      bool data);
  85 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
  86                      bool data);
  87 extern int kvmppc_emulate_instruction(struct kvm_run *run,
  88                                       struct kvm_vcpu *vcpu);
  89 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
  90 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
  91 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
  92 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
  93 extern void kvmppc_decrementer_func(unsigned long data);
  94 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
  95 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
  96 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
  97
  98 /* Core-specific hooks */
  99
 100 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
 101                            unsigned int gtlb_idx);
 102 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
 103 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
 104 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
 105 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
 106 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 107 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 108 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
 109                               gva_t eaddr);
 110 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
 111 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
 112 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
 113                         enum xlate_instdata xlid, enum xlate_readwrite xlrw,
 114                         struct kvmppc_pte *pte);
 115
 116 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
 117                                                 unsigned int id);
 118 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
 119 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
 120 extern int kvmppc_core_check_processor_compat(void);
 121 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
 122                                       struct kvm_translation *tr);
 123
 124 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 125 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
 126
 127 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
 128 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
 129 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
 130 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
 131 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
 132 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 133                                        struct kvm_interrupt *irq);
 134 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
 135 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
 136 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
 137
 138 extern int kvmppc_booke_init(void);
 139 extern void kvmppc_booke_exit(void);
 140
 141 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
 142 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
 143 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
 144
 145 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp);
 146 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp);
 147 extern void kvmppc_free_hpt(struct kvm *kvm);
 148 extern long kvmppc_prepare_vrma(struct kvm *kvm,
 149                                 struct kvm_userspace_memory_region *mem);
 150 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
 151                         struct kvm_memory_slot *memslot, unsigned long porder);
 152 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
 153
 154 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 155                                 struct kvm_create_spapr_tce *args);
 156 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 157                              unsigned long ioba, unsigned long tce);
 158 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 159                              unsigned long ioba);
 160 extern struct kvm_rma_info *kvm_alloc_rma(void);
 161 extern void kvm_release_rma(struct kvm_rma_info *ri);
 162 extern struct page *kvm_alloc_hpt(unsigned long nr_pages);
 163 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages);
 164 extern int kvmppc_core_init_vm(struct kvm *kvm);
 165 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
 166 extern void kvmppc_core_free_memslot(struct kvm *kvm,
 167                                      struct kvm_memory_slot *free,
 168                                      struct kvm_memory_slot *dont);
 169 extern int kvmppc_core_create_memslot(struct kvm *kvm,
 170                                       struct kvm_memory_slot *slot,
 171                                       unsigned long npages);
 172 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 173                                 struct kvm_memory_slot *memslot,
 174                                 struct kvm_userspace_memory_region *mem);
 175 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
 176                                 struct kvm_userspace_memory_region *mem,
 177                                 const struct kvm_memory_slot *old);
 178 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
 179                                       struct kvm_ppc_smmu_info *info);
 180 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
 181                                       struct kvm_memory_slot *memslot);
 182
 183 extern int kvmppc_bookehv_init(void);
 184 extern void kvmppc_bookehv_exit(void);
 185
 186 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
 187
 188 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
 189
 190 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
 191
 192 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
 193 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
 194 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
 195 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
 196                                 u32 priority);
 197 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
 198                                 u32 *priority);
 199 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
 200 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
 201
 202 union kvmppc_one_reg {
 203         u32     wval;
 204         u64     dval;
 205         vector128 vval;
 206         u64     vsxval[2];
 207         struct {
 208                 u64     addr;
 209                 u64     length;
 210         }       vpaval;
 211 };
 212
 213 struct kvmppc_ops {
 214         struct module *owner;
 215         int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 216         int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 217         int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
 218                            union kvmppc_one_reg *val);
 219         int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
 220                            union kvmppc_one_reg *val);
 221         void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
 222         void (*vcpu_put)(struct kvm_vcpu *vcpu);
 223         void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
 224         int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
 225         struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
 226         void (*vcpu_free)(struct kvm_vcpu *vcpu);
 227         int (*check_requests)(struct kvm_vcpu *vcpu);
 228         int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
 229         void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
 230         int (*prepare_memory_region)(struct kvm *kvm,
 231                                      struct kvm_memory_slot *memslot,
 232                                      struct kvm_userspace_memory_region *mem);
 233         void (*commit_memory_region)(struct kvm *kvm,
 234                                      struct kvm_userspace_memory_region *mem,
 235                                      const struct kvm_memory_slot *old);
 236         int (*unmap_hva)(struct kvm *kvm, unsigned long hva);
 237         int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
 238                            unsigned long end);
 239         int (*age_hva)(struct kvm *kvm, unsigned long hva);
 240         int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
 241         void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
 242         void (*mmu_destroy)(struct kvm_vcpu *vcpu);
 243         void (*free_memslot)(struct kvm_memory_slot *free,
 244                              struct kvm_memory_slot *dont);
 245         int (*create_memslot)(struct kvm_memory_slot *slot,
 246                               unsigned long npages);
 247         int (*init_vm)(struct kvm *kvm);
 248         void (*destroy_vm)(struct kvm *kvm);
 249         int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
 250         int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
 251                           unsigned int inst, int *advance);
 252         int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
 253         int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
 254         void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
 255         long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
 256                               unsigned long arg);
 257         int (*hcall_implemented)(unsigned long hcall);
 258 };
 259
 260 extern struct kvmppc_ops *kvmppc_hv_ops;
 261 extern struct kvmppc_ops *kvmppc_pr_ops;
 262
 263 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
 264                                         enum instruction_type type, u32 *inst)
 265 {
 266         int ret = EMULATE_DONE;
 267         u32 fetched_inst;
 268
 269         /* Load the instruction manually if it failed to do so in the
 270          * exit path */
 271         if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
 272                 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
 273
 274         /*  Write fetch_failed unswapped if the fetch failed */
 275         if (ret == EMULATE_DONE)
 276                 fetched_inst = kvmppc_need_byteswap(vcpu) ?
 277                                 swab32(vcpu->arch.last_inst) :
 278                                 vcpu->arch.last_inst;
 279         else
 280                 fetched_inst = vcpu->arch.last_inst;
 281
 282         *inst = fetched_inst;
 283         return ret;
 284 }
 285
 286 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
 287 {
 288         return kvm->arch.kvm_ops == kvmppc_hv_ops;
 289 }
 290
 291 /*
 292  * Cuts out inst bits with ordering according to spec.
 293  * That means the leftmost bit is zero. All given bits are included.
 294  */
 295 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
 296 {
 297         u32 r;
 298         u32 mask;
 299
 300         BUG_ON(msb > lsb);
 301
 302         mask = (1 << (lsb - msb + 1)) - 1;
 303         r = (inst >> (63 - lsb)) & mask;
 304
 305         return r;
 306 }
 307
 308 /*
 309  * Replaces inst bits with ordering according to spec.
 310  */
 311 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
 312 {
 313         u32 r;
 314         u32 mask;
 315
 316         BUG_ON(msb > lsb);
 317
 318         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
 319         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
 320
 321         return r;
 322 }
 323
 324 #define one_reg_size(id)        \
 325         (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
 326
 327 #define get_reg_val(id, reg)    ({              \
 328         union kvmppc_one_reg __u;               \
 329         switch (one_reg_size(id)) {             \
 330         case 4: __u.wval = (reg); break;        \
 331         case 8: __u.dval = (reg); break;        \
 332         default: BUG();                         \
 333         }                                       \
 334         __u;                                    \
 335 })
 336
 337
 338 #define set_reg_val(id, val)    ({              \
 339         u64 __v;                                \
 340         switch (one_reg_size(id)) {             \
 341         case 4: __v = (val).wval; break;        \
 342         case 8: __v = (val).dval; break;        \
 343         default: BUG();                         \
 344         }                                       \
 345         __v;                                    \
 346 })
 347
 348 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 349 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 350
 351 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 352 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 353
 354 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 355 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 356 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
 357 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
 358
 359 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
 360
 361 struct openpic;
 362
 363 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 364 extern void kvm_cma_reserve(void) __init;
 365 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 366 {
 367         paca[cpu].kvm_hstate.xics_phys = addr;
 368 }
 369
 370 static inline u32 kvmppc_get_xics_latch(void)
 371 {
 372         u32 xirr;
 373
 374         xirr = get_paca()->kvm_hstate.saved_xirr;
 375         get_paca()->kvm_hstate.saved_xirr = 0;
 376         return xirr;
 377 }
 378
 379 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
 380 {
 381         paca[cpu].kvm_hstate.host_ipi = host_ipi;
 382 }
 383
 384 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
 385 {
 386         vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
 387 }
 388
 389 extern void kvm_hv_vm_activated(void);
 390 extern void kvm_hv_vm_deactivated(void);
 391 extern bool kvm_hv_mode_active(void);
 392
 393 #else
 394 static inline void __init kvm_cma_reserve(void)
 395 {}
 396
 397 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 398 {}
 399
 400 static inline u32 kvmppc_get_xics_latch(void)
 401 {
 402         return 0;
 403 }
 404
 405 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
 406 {}
 407
 408 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
 409 {
 410         kvm_vcpu_kick(vcpu);
 411 }
 412
 413 static inline bool kvm_hv_mode_active(void)             { return false; }
 414
 415 #endif
 416
 417 #ifdef CONFIG_KVM_XICS
 418 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
 419 {
 420         return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
 421 }
 422 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
 423 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server);
 424 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args);
 425 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
 426 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
 427 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
 428 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
 429                         struct kvm_vcpu *vcpu, u32 cpu);
 430 #else
 431 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
 432         { return 0; }
 433 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
 434 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu,
 435                                          unsigned long server)
 436         { return -EINVAL; }
 437 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm,
 438                                         struct kvm_irq_level *args)
 439         { return -ENOTTY; }
 440 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
 441         { return 0; }
 442 #endif
 443
 444 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
 445 {
 446 #ifdef CONFIG_KVM_BOOKE_HV
 447         return mfspr(SPRN_GEPR);
 448 #elif defined(CONFIG_BOOKE)
 449         return vcpu->arch.epr;
 450 #else
 451         return 0;
 452 #endif
 453 }
 454
 455 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
 456 {
 457 #ifdef CONFIG_KVM_BOOKE_HV
 458         mtspr(SPRN_GEPR, epr);
 459 #elif defined(CONFIG_BOOKE)
 460         vcpu->arch.epr = epr;
 461 #endif
 462 }
 463
 464 #ifdef CONFIG_KVM_MPIC
 465
 466 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
 467 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
 468                              u32 cpu);
 469 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
 470
 471 #else
 472
 473 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
 474 {
 475 }
 476
 477 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
 478                 struct kvm_vcpu *vcpu, u32 cpu)
 479 {
 480         return -EINVAL;
 481 }
 482
 483 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
 484                 struct kvm_vcpu *vcpu)
 485 {
 486 }
 487
 488 #endif /* CONFIG_KVM_MPIC */
 489
 490 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
 491                               struct kvm_config_tlb *cfg);
 492 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
 493                              struct kvm_dirty_tlb *cfg);
 494
 495 long kvmppc_alloc_lpid(void);
 496 void kvmppc_claim_lpid(long lpid);
 497 void kvmppc_free_lpid(long lpid);
 498 void kvmppc_init_lpid(unsigned long nr_lpids);
 499
 500 static inline void kvmppc_mmu_flush_icache(pfn_t pfn)
 501 {
 502         struct page *page;
 503         /*
 504          * We can only access pages that the kernel maps
 505          * as memory. Bail out for unmapped ones.
 506          */
 507         if (!pfn_valid(pfn))
 508                 return;
 509
 510         /* Clear i-cache for new pages */
 511         page = pfn_to_page(pfn);
 512         if (!test_bit(PG_arch_1, &page->flags)) {
 513                 flush_dcache_icache_page(page);
 514                 set_bit(PG_arch_1, &page->flags);
 515         }
 516 }
 517
 518 /*
 519  * Shared struct helpers. The shared struct can be little or big endian,
 520  * depending on the guest endianness. So expose helpers to all of them.
 521  */
 522 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
 523 {
 524 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
 525         /* Only Book3S_64 PR supports bi-endian for now */
 526         return vcpu->arch.shared_big_endian;
 527 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
 528         /* Book3s_64 HV on little endian is always little endian */
 529         return false;
 530 #else
 531         return true;
 532 #endif
 533 }
 534
 535 #define SPRNG_WRAPPER_GET(reg, e500hv_spr)                              \
 536 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu)             \
 537 {                                                                       \
 538         return mfspr(e500hv_spr);                                       \
 539 }                                                                       \
 540
 541 #define SPRNG_WRAPPER_SET(reg, e500hv_spr)                              \
 542 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val)   \
 543 {                                                                       \
 544         mtspr(e500hv_spr, val);                                         \
 545 }                                                                       \
 546
 547 #define SHARED_WRAPPER_GET(reg, size)                                   \
 548 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu)           \
 549 {                                                                       \
 550         if (kvmppc_shared_big_endian(vcpu))                             \
 551                return be##size##_to_cpu(vcpu->arch.shared->reg);        \
 552         else                                                            \
 553                return le##size##_to_cpu(vcpu->arch.shared->reg);        \
 554 }                                                                       \
 555
 556 #define SHARED_WRAPPER_SET(reg, size)                                   \
 557 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
 558 {                                                                       \
 559         if (kvmppc_shared_big_endian(vcpu))                             \
 560                vcpu->arch.shared->reg = cpu_to_be##size(val);           \
 561         else                                                            \
 562                vcpu->arch.shared->reg = cpu_to_le##size(val);           \
 563 }                                                                       \
 564
 565 #define SHARED_WRAPPER(reg, size)                                       \
 566         SHARED_WRAPPER_GET(reg, size)                                   \
 567         SHARED_WRAPPER_SET(reg, size)                                   \
 568
 569 #define SPRNG_WRAPPER(reg, e500hv_spr)                                  \
 570         SPRNG_WRAPPER_GET(reg, e500hv_spr)                              \
 571         SPRNG_WRAPPER_SET(reg, e500hv_spr)                              \
 572
 573 #ifdef CONFIG_KVM_BOOKE_HV
 574
 575 #define SHARED_SPRNG_WRAPPER(reg, size, e500hv_spr)                     \
 576         SPRNG_WRAPPER(reg, e500hv_spr)                                  \
 577
 578 #else
 579
 580 #define SHARED_SPRNG_WRAPPER(reg, size, e500hv_spr)                     \
 581         SHARED_WRAPPER(reg, size)                                       \
 582
 583 #endif
 584
 585 SHARED_WRAPPER(critical, 64)
 586 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
 587 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
 588 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
 589 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
 590 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
 591 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
 592 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
 593 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
 594 SHARED_WRAPPER_GET(msr, 64)
 595 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
 596 {
 597         if (kvmppc_shared_big_endian(vcpu))
 598                vcpu->arch.shared->msr = cpu_to_be64(val);
 599         else
 600                vcpu->arch.shared->msr = cpu_to_le64(val);
 601 }
 602 SHARED_WRAPPER(dsisr, 32)
 603 SHARED_WRAPPER(int_pending, 32)
 604 SHARED_WRAPPER(sprg4, 64)
 605 SHARED_WRAPPER(sprg5, 64)
 606 SHARED_WRAPPER(sprg6, 64)
 607 SHARED_WRAPPER(sprg7, 64)
 608
 609 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
 610 {
 611         if (kvmppc_shared_big_endian(vcpu))
 612                return be32_to_cpu(vcpu->arch.shared->sr[nr]);
 613         else
 614                return le32_to_cpu(vcpu->arch.shared->sr[nr]);
 615 }
 616
 617 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
 618 {
 619         if (kvmppc_shared_big_endian(vcpu))
 620                vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
 621         else
 622                vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
 623 }
 624
 625 /*
 626  * Please call after prepare_to_enter. This function puts the lazy ee and irq
 627  * disabled tracking state back to normal mode, without actually enabling
 628  * interrupts.
 629  */
 630 static inline void kvmppc_fix_ee_before_entry(void)
 631 {
 632         trace_hardirqs_on();
 633
 634 #ifdef CONFIG_PPC64
 635         /*
 636          * To avoid races, the caller must have gone directly from having
 637          * interrupts fully-enabled to hard-disabled.
 638          */
 639         WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
 640
 641         /* Only need to enable IRQs by hard enabling them after this */
 642         local_paca->irq_happened = 0;
 643         local_paca->soft_enabled = 1;
 644 #endif
 645 }
 646
 647 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
 648 {
 649         ulong ea;
 650         ulong msr_64bit = 0;
 651
 652         ea = kvmppc_get_gpr(vcpu, rb);
 653         if (ra)
 654                 ea += kvmppc_get_gpr(vcpu, ra);
 655
 656 #if defined(CONFIG_PPC_BOOK3E_64)
 657         msr_64bit = MSR_CM;
 658 #elif defined(CONFIG_PPC_BOOK3S_64)
 659         msr_64bit = MSR_SF;
 660 #endif
 661
 662         if (!(kvmppc_get_msr(vcpu) & msr_64bit))
 663                 ea = (uint32_t)ea;
 664
 665         return ea;
 666 }
 667
 668 extern void xics_wake_cpu(int cpu);
 669
 670 #endif /* __POWERPC_KVM_PPC_H__ */