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 /*
  42  * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
  43  * for supporting software breakpoint.
  44  */
  45 #define KVMPPC_INST_SW_BREAKPOINT       0x00dddd00
  46
  47 enum emulation_result {
  48         EMULATE_DONE,         /* no further processing */
  49         EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
  50         EMULATE_FAIL,         /* can't emulate this instruction */
  51         EMULATE_AGAIN,        /* something went wrong. go again */
  52         EMULATE_EXIT_USER,    /* emulation requires exit to user-space */
  53 };
  54
  55 enum instruction_type {
  56         INST_GENERIC,
  57         INST_SC,                /* system call */
  58 };
  59
  60 enum xlate_instdata {
  61         XLATE_INST,             /* translate instruction address */
  62         XLATE_DATA              /* translate data address */
  63 };
  64
  65 enum xlate_readwrite {
  66         XLATE_READ,             /* check for read permissions */
  67         XLATE_WRITE             /* check for write permissions */
  68 };
  69
  70 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  71 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  72 extern void kvmppc_handler_highmem(void);
  73
  74 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
  75 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
  76                               unsigned int rt, unsigned int bytes,
  77                               int is_default_endian);
  78 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
  79                                unsigned int rt, unsigned int bytes,
  80                                int is_default_endian);
  81 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
  82                                u64 val, unsigned int bytes,
  83                                int is_default_endian);
  84
  85 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
  86                                  enum instruction_type type, u32 *inst);
  87
  88 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
  89                      bool data);
  90 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
  91                      bool data);
  92 extern int kvmppc_emulate_instruction(struct kvm_run *run,
  93                                       struct kvm_vcpu *vcpu);
  94 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
  95 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
  96 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
  97 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
  98 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
  99 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
 100 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
 101 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
 102
 103 /* Core-specific hooks */
 104
 105 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
 106                            unsigned int gtlb_idx);
 107 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
 108 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
 109 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
 110 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
 111 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 112 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 113 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
 114                               gva_t eaddr);
 115 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
 116 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
 117 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
 118                         enum xlate_instdata xlid, enum xlate_readwrite xlrw,
 119                         struct kvmppc_pte *pte);
 120
 121 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
 122                                                 unsigned int id);
 123 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
 124 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
 125 extern int kvmppc_core_check_processor_compat(void);
 126 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
 127                                       struct kvm_translation *tr);
 128
 129 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 130 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
 131
 132 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
 133 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
 134 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
 135 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
 136 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
 137 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 138                                        struct kvm_interrupt *irq);
 139 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
 140 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
 141                                         ulong esr_flags);
 142 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
 143                                            ulong dear_flags,
 144                                            ulong esr_flags);
 145 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
 146 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
 147                                            ulong esr_flags);
 148 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
 149 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
 150
 151 extern int kvmppc_booke_init(void);
 152 extern void kvmppc_booke_exit(void);
 153
 154 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
 155 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
 156 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
 157
 158 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
 159 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
 160 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
 161 extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
 162 extern long kvmppc_prepare_vrma(struct kvm *kvm,
 163                                 struct kvm_userspace_memory_region *mem);
 164 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
 165                         struct kvm_memory_slot *memslot, unsigned long porder);
 166 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
 167
 168 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 169                                 struct kvm_create_spapr_tce_64 *args);
 170 extern struct kvmppc_spapr_tce_table *kvmppc_find_table(
 171                 struct kvm_vcpu *vcpu, unsigned long liobn);
 172 extern long kvmppc_ioba_validate(struct kvmppc_spapr_tce_table *stt,
 173                 unsigned long ioba, unsigned long npages);
 174 extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt,
 175                 unsigned long tce);
 176 extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa,
 177                 unsigned long *ua, unsigned long **prmap);
 178 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt,
 179                 unsigned long idx, unsigned long tce);
 180 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 181                              unsigned long ioba, unsigned long tce);
 182 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 183                 unsigned long liobn, unsigned long ioba,
 184                 unsigned long tce_list, unsigned long npages);
 185 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
 186                 unsigned long liobn, unsigned long ioba,
 187                 unsigned long tce_value, unsigned long npages);
 188 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 189                              unsigned long ioba);
 190 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
 191 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
 192 extern int kvmppc_core_init_vm(struct kvm *kvm);
 193 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
 194 extern void kvmppc_core_free_memslot(struct kvm *kvm,
 195                                      struct kvm_memory_slot *free,
 196                                      struct kvm_memory_slot *dont);
 197 extern int kvmppc_core_create_memslot(struct kvm *kvm,
 198                                       struct kvm_memory_slot *slot,
 199                                       unsigned long npages);
 200 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 201                                 struct kvm_memory_slot *memslot,
 202                                 const struct kvm_userspace_memory_region *mem);
 203 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
 204                                 const struct kvm_userspace_memory_region *mem,
 205                                 const struct kvm_memory_slot *old,
 206                                 const struct kvm_memory_slot *new);
 207 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
 208                                       struct kvm_ppc_smmu_info *info);
 209 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
 210                                       struct kvm_memory_slot *memslot);
 211
 212 extern int kvmppc_bookehv_init(void);
 213 extern void kvmppc_bookehv_exit(void);
 214
 215 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
 216
 217 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
 218 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
 219                                             struct kvm_ppc_resize_hpt *rhpt);
 220 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
 221                                            struct kvm_ppc_resize_hpt *rhpt);
 222
 223 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
 224
 225 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
 226 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
 227 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
 228 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
 229                                 u32 priority);
 230 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
 231                                 u32 *priority);
 232 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
 233 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
 234
 235 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
 236 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
 237
 238 union kvmppc_one_reg {
 239         u32     wval;
 240         u64     dval;
 241         vector128 vval;
 242         u64     vsxval[2];
 243         struct {
 244                 u64     addr;
 245                 u64     length;
 246         }       vpaval;
 247 };
 248
 249 struct kvmppc_ops {
 250         struct module *owner;
 251         int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 252         int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 253         int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
 254                            union kvmppc_one_reg *val);
 255         int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
 256                            union kvmppc_one_reg *val);
 257         void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
 258         void (*vcpu_put)(struct kvm_vcpu *vcpu);
 259         void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
 260         int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
 261         struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
 262         void (*vcpu_free)(struct kvm_vcpu *vcpu);
 263         int (*check_requests)(struct kvm_vcpu *vcpu);
 264         int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
 265         void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
 266         int (*prepare_memory_region)(struct kvm *kvm,
 267                                      struct kvm_memory_slot *memslot,
 268                                      const struct kvm_userspace_memory_region *mem);
 269         void (*commit_memory_region)(struct kvm *kvm,
 270                                      const struct kvm_userspace_memory_region *mem,
 271                                      const struct kvm_memory_slot *old,
 272                                      const struct kvm_memory_slot *new);
 273         int (*unmap_hva)(struct kvm *kvm, unsigned long hva);
 274         int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
 275                            unsigned long end);
 276         int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
 277         int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
 278         void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
 279         void (*mmu_destroy)(struct kvm_vcpu *vcpu);
 280         void (*free_memslot)(struct kvm_memory_slot *free,
 281                              struct kvm_memory_slot *dont);
 282         int (*create_memslot)(struct kvm_memory_slot *slot,
 283                               unsigned long npages);
 284         int (*init_vm)(struct kvm *kvm);
 285         void (*destroy_vm)(struct kvm *kvm);
 286         int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
 287         int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
 288                           unsigned int inst, int *advance);
 289         int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
 290         int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
 291         void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
 292         long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
 293                               unsigned long arg);
 294         int (*hcall_implemented)(unsigned long hcall);
 295         int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
 296                                        struct irq_bypass_producer *);
 297         void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
 298                                         struct irq_bypass_producer *);
 299         int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
 300         int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
 301 };
 302
 303 extern struct kvmppc_ops *kvmppc_hv_ops;
 304 extern struct kvmppc_ops *kvmppc_pr_ops;
 305
 306 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
 307                                         enum instruction_type type, u32 *inst)
 308 {
 309         int ret = EMULATE_DONE;
 310         u32 fetched_inst;
 311
 312         /* Load the instruction manually if it failed to do so in the
 313          * exit path */
 314         if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
 315                 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
 316
 317         /*  Write fetch_failed unswapped if the fetch failed */
 318         if (ret == EMULATE_DONE)
 319                 fetched_inst = kvmppc_need_byteswap(vcpu) ?
 320                                 swab32(vcpu->arch.last_inst) :
 321                                 vcpu->arch.last_inst;
 322         else
 323                 fetched_inst = vcpu->arch.last_inst;
 324
 325         *inst = fetched_inst;
 326         return ret;
 327 }
 328
 329 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
 330 {
 331         return kvm->arch.kvm_ops == kvmppc_hv_ops;
 332 }
 333
 334 extern int kvmppc_hwrng_present(void);
 335
 336 /*
 337  * Cuts out inst bits with ordering according to spec.
 338  * That means the leftmost bit is zero. All given bits are included.
 339  */
 340 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
 341 {
 342         u32 r;
 343         u32 mask;
 344
 345         BUG_ON(msb > lsb);
 346
 347         mask = (1 << (lsb - msb + 1)) - 1;
 348         r = (inst >> (63 - lsb)) & mask;
 349
 350         return r;
 351 }
 352
 353 /*
 354  * Replaces inst bits with ordering according to spec.
 355  */
 356 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
 357 {
 358         u32 r;
 359         u32 mask;
 360
 361         BUG_ON(msb > lsb);
 362
 363         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
 364         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
 365
 366         return r;
 367 }
 368
 369 #define one_reg_size(id)        \
 370         (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
 371
 372 #define get_reg_val(id, reg)    ({              \
 373         union kvmppc_one_reg __u;               \
 374         switch (one_reg_size(id)) {             \
 375         case 4: __u.wval = (reg); break;        \
 376         case 8: __u.dval = (reg); break;        \
 377         default: BUG();                         \
 378         }                                       \
 379         __u;                                    \
 380 })
 381
 382
 383 #define set_reg_val(id, val)    ({              \
 384         u64 __v;                                \
 385         switch (one_reg_size(id)) {             \
 386         case 4: __v = (val).wval; break;        \
 387         case 8: __v = (val).dval; break;        \
 388         default: BUG();                         \
 389         }                                       \
 390         __v;                                    \
 391 })
 392
 393 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 394 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 395
 396 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 397 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 398
 399 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 400 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 401 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
 402 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
 403
 404 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
 405
 406 struct openpic;
 407
 408 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 409 extern void kvm_cma_reserve(void) __init;
 410 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 411 {
 412         paca[cpu].kvm_hstate.xics_phys = addr;
 413 }
 414
 415 static inline u32 kvmppc_get_xics_latch(void)
 416 {
 417         u32 xirr;
 418
 419         xirr = get_paca()->kvm_hstate.saved_xirr;
 420         get_paca()->kvm_hstate.saved_xirr = 0;
 421         return xirr;
 422 }
 423
 424 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
 425 {
 426         paca[cpu].kvm_hstate.host_ipi = host_ipi;
 427 }
 428
 429 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
 430 {
 431         vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
 432 }
 433
 434 extern void kvm_hv_vm_activated(void);
 435 extern void kvm_hv_vm_deactivated(void);
 436 extern bool kvm_hv_mode_active(void);
 437
 438 #else
 439 static inline void __init kvm_cma_reserve(void)
 440 {}
 441
 442 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 443 {}
 444
 445 static inline u32 kvmppc_get_xics_latch(void)
 446 {
 447         return 0;
 448 }
 449
 450 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
 451 {}
 452
 453 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
 454 {
 455         kvm_vcpu_kick(vcpu);
 456 }
 457
 458 static inline bool kvm_hv_mode_active(void)             { return false; }
 459
 460 #endif
 461
 462 #ifdef CONFIG_KVM_XICS
 463 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
 464 {
 465         return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
 466 }
 467
 468 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
 469                                 struct kvm *kvm)
 470 {
 471         if (kvm && kvm_irq_bypass)
 472                 return kvm->arch.pimap;
 473         return NULL;
 474 }
 475
 476 extern void kvmppc_alloc_host_rm_ops(void);
 477 extern void kvmppc_free_host_rm_ops(void);
 478 extern void kvmppc_free_pimap(struct kvm *kvm);
 479 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
 480 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
 481 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server);
 482 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args);
 483 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
 484 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
 485 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
 486 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
 487                         struct kvm_vcpu *vcpu, u32 cpu);
 488 extern void kvmppc_xics_ipi_action(void);
 489 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
 490                                    unsigned long host_irq);
 491 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
 492                                    unsigned long host_irq);
 493 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
 494                                         struct kvmppc_irq_map *irq_map,
 495                                         struct kvmppc_passthru_irqmap *pimap,
 496                                         bool *again);
 497 extern int h_ipi_redirect;
 498 #else
 499 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
 500                                 struct kvm *kvm)
 501         { return NULL; }
 502 static inline void kvmppc_alloc_host_rm_ops(void) {};
 503 static inline void kvmppc_free_host_rm_ops(void) {};
 504 static inline void kvmppc_free_pimap(struct kvm *kvm) {};
 505 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
 506         { return 0; }
 507 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
 508         { return 0; }
 509 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
 510 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu,
 511                                          unsigned long server)
 512         { return -EINVAL; }
 513 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm,
 514                                         struct kvm_irq_level *args)
 515         { return -ENOTTY; }
 516 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
 517         { return 0; }
 518 #endif
 519
 520 /*
 521  * Prototypes for functions called only from assembler code.
 522  * Having prototypes reduces sparse errors.
 523  */
 524 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 525                          unsigned long ioba, unsigned long tce);
 526 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 527                                   unsigned long liobn, unsigned long ioba,
 528                                   unsigned long tce_list, unsigned long npages);
 529 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
 530                            unsigned long liobn, unsigned long ioba,
 531                            unsigned long tce_value, unsigned long npages);
 532 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
 533                             unsigned int yield_count);
 534 long kvmppc_h_random(struct kvm_vcpu *vcpu);
 535 void kvmhv_commence_exit(int trap);
 536 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
 537 void kvmppc_subcore_enter_guest(void);
 538 void kvmppc_subcore_exit_guest(void);
 539 long kvmppc_realmode_hmi_handler(void);
 540 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
 541                     long pte_index, unsigned long pteh, unsigned long ptel);
 542 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
 543                      unsigned long pte_index, unsigned long avpn);
 544 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
 545 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
 546                       unsigned long pte_index, unsigned long avpn,
 547                       unsigned long va);
 548 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
 549                    unsigned long pte_index);
 550 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
 551                         unsigned long pte_index);
 552 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
 553                         unsigned long pte_index);
 554 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
 555                           unsigned long slb_v, unsigned int status, bool data);
 556 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
 557 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
 558                     unsigned long mfrr);
 559 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
 560 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
 561
 562 /*
 563  * Host-side operations we want to set up while running in real
 564  * mode in the guest operating on the xics.
 565  * Currently only VCPU wakeup is supported.
 566  */
 567
 568 union kvmppc_rm_state {
 569         unsigned long raw;
 570         struct {
 571                 u32 in_host;
 572                 u32 rm_action;
 573         };
 574 };
 575
 576 struct kvmppc_host_rm_core {
 577         union kvmppc_rm_state rm_state;
 578         void *rm_data;
 579         char pad[112];
 580 };
 581
 582 struct kvmppc_host_rm_ops {
 583         struct kvmppc_host_rm_core      *rm_core;
 584         void            (*vcpu_kick)(struct kvm_vcpu *vcpu);
 585 };
 586
 587 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
 588
 589 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
 590 {
 591 #ifdef CONFIG_KVM_BOOKE_HV
 592         return mfspr(SPRN_GEPR);
 593 #elif defined(CONFIG_BOOKE)
 594         return vcpu->arch.epr;
 595 #else
 596         return 0;
 597 #endif
 598 }
 599
 600 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
 601 {
 602 #ifdef CONFIG_KVM_BOOKE_HV
 603         mtspr(SPRN_GEPR, epr);
 604 #elif defined(CONFIG_BOOKE)
 605         vcpu->arch.epr = epr;
 606 #endif
 607 }
 608
 609 #ifdef CONFIG_KVM_MPIC
 610
 611 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
 612 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
 613                              u32 cpu);
 614 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
 615
 616 #else
 617
 618 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
 619 {
 620 }
 621
 622 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
 623                 struct kvm_vcpu *vcpu, u32 cpu)
 624 {
 625         return -EINVAL;
 626 }
 627
 628 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
 629                 struct kvm_vcpu *vcpu)
 630 {
 631 }
 632
 633 #endif /* CONFIG_KVM_MPIC */
 634
 635 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
 636                               struct kvm_config_tlb *cfg);
 637 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
 638                              struct kvm_dirty_tlb *cfg);
 639
 640 long kvmppc_alloc_lpid(void);
 641 void kvmppc_claim_lpid(long lpid);
 642 void kvmppc_free_lpid(long lpid);
 643 void kvmppc_init_lpid(unsigned long nr_lpids);
 644
 645 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
 646 {
 647         struct page *page;
 648         /*
 649          * We can only access pages that the kernel maps
 650          * as memory. Bail out for unmapped ones.
 651          */
 652         if (!pfn_valid(pfn))
 653                 return;
 654
 655         /* Clear i-cache for new pages */
 656         page = pfn_to_page(pfn);
 657         if (!test_bit(PG_arch_1, &page->flags)) {
 658                 flush_dcache_icache_page(page);
 659                 set_bit(PG_arch_1, &page->flags);
 660         }
 661 }
 662
 663 /*
 664  * Shared struct helpers. The shared struct can be little or big endian,
 665  * depending on the guest endianness. So expose helpers to all of them.
 666  */
 667 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
 668 {
 669 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
 670         /* Only Book3S_64 PR supports bi-endian for now */
 671         return vcpu->arch.shared_big_endian;
 672 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
 673         /* Book3s_64 HV on little endian is always little endian */
 674         return false;
 675 #else
 676         return true;
 677 #endif
 678 }
 679
 680 #define SPRNG_WRAPPER_GET(reg, bookehv_spr)                             \
 681 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu)             \
 682 {                                                                       \
 683         return mfspr(bookehv_spr);                                      \
 684 }                                                                       \
 685
 686 #define SPRNG_WRAPPER_SET(reg, bookehv_spr)                             \
 687 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val)   \
 688 {                                                                       \
 689         mtspr(bookehv_spr, val);                                                \
 690 }                                                                       \
 691
 692 #define SHARED_WRAPPER_GET(reg, size)                                   \
 693 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu)           \
 694 {                                                                       \
 695         if (kvmppc_shared_big_endian(vcpu))                             \
 696                return be##size##_to_cpu(vcpu->arch.shared->reg);        \
 697         else                                                            \
 698                return le##size##_to_cpu(vcpu->arch.shared->reg);        \
 699 }                                                                       \
 700
 701 #define SHARED_WRAPPER_SET(reg, size)                                   \
 702 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
 703 {                                                                       \
 704         if (kvmppc_shared_big_endian(vcpu))                             \
 705                vcpu->arch.shared->reg = cpu_to_be##size(val);           \
 706         else                                                            \
 707                vcpu->arch.shared->reg = cpu_to_le##size(val);           \
 708 }                                                                       \
 709
 710 #define SHARED_WRAPPER(reg, size)                                       \
 711         SHARED_WRAPPER_GET(reg, size)                                   \
 712         SHARED_WRAPPER_SET(reg, size)                                   \
 713
 714 #define SPRNG_WRAPPER(reg, bookehv_spr)                                 \
 715         SPRNG_WRAPPER_GET(reg, bookehv_spr)                             \
 716         SPRNG_WRAPPER_SET(reg, bookehv_spr)                             \
 717
 718 #ifdef CONFIG_KVM_BOOKE_HV
 719
 720 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)                    \
 721         SPRNG_WRAPPER(reg, bookehv_spr)                                 \
 722
 723 #else
 724
 725 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)                    \
 726         SHARED_WRAPPER(reg, size)                                       \
 727
 728 #endif
 729
 730 SHARED_WRAPPER(critical, 64)
 731 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
 732 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
 733 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
 734 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
 735 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
 736 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
 737 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
 738 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
 739 SHARED_WRAPPER_GET(msr, 64)
 740 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
 741 {
 742         if (kvmppc_shared_big_endian(vcpu))
 743                vcpu->arch.shared->msr = cpu_to_be64(val);
 744         else
 745                vcpu->arch.shared->msr = cpu_to_le64(val);
 746 }
 747 SHARED_WRAPPER(dsisr, 32)
 748 SHARED_WRAPPER(int_pending, 32)
 749 SHARED_WRAPPER(sprg4, 64)
 750 SHARED_WRAPPER(sprg5, 64)
 751 SHARED_WRAPPER(sprg6, 64)
 752 SHARED_WRAPPER(sprg7, 64)
 753
 754 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
 755 {
 756         if (kvmppc_shared_big_endian(vcpu))
 757                return be32_to_cpu(vcpu->arch.shared->sr[nr]);
 758         else
 759                return le32_to_cpu(vcpu->arch.shared->sr[nr]);
 760 }
 761
 762 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
 763 {
 764         if (kvmppc_shared_big_endian(vcpu))
 765                vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
 766         else
 767                vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
 768 }
 769
 770 /*
 771  * Please call after prepare_to_enter. This function puts the lazy ee and irq
 772  * disabled tracking state back to normal mode, without actually enabling
 773  * interrupts.
 774  */
 775 static inline void kvmppc_fix_ee_before_entry(void)
 776 {
 777         trace_hardirqs_on();
 778
 779 #ifdef CONFIG_PPC64
 780         /*
 781          * To avoid races, the caller must have gone directly from having
 782          * interrupts fully-enabled to hard-disabled.
 783          */
 784         WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
 785
 786         /* Only need to enable IRQs by hard enabling them after this */
 787         local_paca->irq_happened = 0;
 788         local_paca->soft_enabled = 1;
 789 #endif
 790 }
 791
 792 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
 793 {
 794         ulong ea;
 795         ulong msr_64bit = 0;
 796
 797         ea = kvmppc_get_gpr(vcpu, rb);
 798         if (ra)
 799                 ea += kvmppc_get_gpr(vcpu, ra);
 800
 801 #if defined(CONFIG_PPC_BOOK3E_64)
 802         msr_64bit = MSR_CM;
 803 #elif defined(CONFIG_PPC_BOOK3S_64)
 804         msr_64bit = MSR_SF;
 805 #endif
 806
 807         if (!(kvmppc_get_msr(vcpu) & msr_64bit))
 808                 ea = (uint32_t)ea;
 809
 810         return ea;
 811 }
 812
 813 extern void xics_wake_cpu(int cpu);
 814
 815 #endif /* __POWERPC_KVM_PPC_H__ */