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