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_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
  82                                 unsigned int rt, unsigned int bytes,
  83                         int is_default_endian, int mmio_sign_extend);
  84 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
  85                                u64 val, unsigned int bytes,
  86                                int is_default_endian);
  87 extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
  88                                 int rs, unsigned int bytes,
  89                                 int is_default_endian);
  90
  91 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
  92                                  enum instruction_type type, u32 *inst);
  93
  94 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
  95                      bool data);
  96 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
  97                      bool data);
  98 extern int kvmppc_emulate_instruction(struct kvm_run *run,
  99                                       struct kvm_vcpu *vcpu);
 100 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
 101 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
 102 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
 103 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
 104 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
 105 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
 106 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
 107 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
 108
 109 /* Core-specific hooks */
 110
 111 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
 112                            unsigned int gtlb_idx);
 113 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
 114 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
 115 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
 116 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
 117 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 118 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 119 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
 120                               gva_t eaddr);
 121 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
 122 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
 123 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
 124                         enum xlate_instdata xlid, enum xlate_readwrite xlrw,
 125                         struct kvmppc_pte *pte);
 126
 127 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
 128                                                 unsigned int id);
 129 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
 130 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
 131 extern int kvmppc_core_check_processor_compat(void);
 132 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
 133                                       struct kvm_translation *tr);
 134
 135 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 136 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
 137
 138 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
 139 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
 140 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
 141 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
 142 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
 143 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
 144 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
 145 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
 146 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 147                                        struct kvm_interrupt *irq);
 148 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
 149 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
 150                                         ulong esr_flags);
 151 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
 152                                            ulong dear_flags,
 153                                            ulong esr_flags);
 154 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
 155 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
 156                                            ulong esr_flags);
 157 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
 158 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
 159
 160 extern int kvmppc_booke_init(void);
 161 extern void kvmppc_booke_exit(void);
 162
 163 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
 164 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
 165 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
 166
 167 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
 168 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
 169 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
 170 extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
 171 extern void kvmppc_rmap_reset(struct kvm *kvm);
 172 extern long kvmppc_prepare_vrma(struct kvm *kvm,
 173                                 struct kvm_userspace_memory_region *mem);
 174 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
 175                         struct kvm_memory_slot *memslot, unsigned long porder);
 176 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
 177 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
 178                 struct iommu_group *grp);
 179 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
 180                 struct iommu_group *grp);
 181 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
 182 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
 183
 184 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 185                                 struct kvm_create_spapr_tce_64 *args);
 186 extern struct kvmppc_spapr_tce_table *kvmppc_find_table(
 187                 struct kvm *kvm, unsigned long liobn);
 188 #define kvmppc_ioba_validate(stt, ioba, npages)                         \
 189                 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \
 190                                 (stt)->size, (ioba), (npages)) ?        \
 191                                 H_PARAMETER : H_SUCCESS)
 192 extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt,
 193                 unsigned long tce);
 194 extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa,
 195                 unsigned long *ua, unsigned long **prmap);
 196 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt,
 197                 unsigned long idx, unsigned long tce);
 198 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 199                              unsigned long ioba, unsigned long tce);
 200 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 201                 unsigned long liobn, unsigned long ioba,
 202                 unsigned long tce_list, unsigned long npages);
 203 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
 204                 unsigned long liobn, unsigned long ioba,
 205                 unsigned long tce_value, unsigned long npages);
 206 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 207                              unsigned long ioba);
 208 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
 209 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
 210 extern int kvmppc_core_init_vm(struct kvm *kvm);
 211 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
 212 extern void kvmppc_core_free_memslot(struct kvm *kvm,
 213                                      struct kvm_memory_slot *free,
 214                                      struct kvm_memory_slot *dont);
 215 extern int kvmppc_core_create_memslot(struct kvm *kvm,
 216                                       struct kvm_memory_slot *slot,
 217                                       unsigned long npages);
 218 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 219                                 struct kvm_memory_slot *memslot,
 220                                 const struct kvm_userspace_memory_region *mem);
 221 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
 222                                 const struct kvm_userspace_memory_region *mem,
 223                                 const struct kvm_memory_slot *old,
 224                                 const struct kvm_memory_slot *new);
 225 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
 226                                       struct kvm_ppc_smmu_info *info);
 227 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
 228                                       struct kvm_memory_slot *memslot);
 229
 230 extern int kvmppc_bookehv_init(void);
 231 extern void kvmppc_bookehv_exit(void);
 232
 233 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
 234
 235 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
 236 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
 237                                             struct kvm_ppc_resize_hpt *rhpt);
 238 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
 239                                            struct kvm_ppc_resize_hpt *rhpt);
 240
 241 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
 242
 243 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
 244 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
 245 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
 246
 247 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
 248                                 u32 priority);
 249 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
 250                                 u32 *priority);
 251 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
 252 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
 253
 254 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
 255 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
 256
 257 union kvmppc_one_reg {
 258         u32     wval;
 259         u64     dval;
 260         vector128 vval;
 261         u64     vsxval[2];
 262         u32     vsx32val[4];
 263         struct {
 264                 u64     addr;
 265                 u64     length;
 266         }       vpaval;
 267 };
 268
 269 struct kvmppc_ops {
 270         struct module *owner;
 271         int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 272         int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 273         int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
 274                            union kvmppc_one_reg *val);
 275         int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
 276                            union kvmppc_one_reg *val);
 277         void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
 278         void (*vcpu_put)(struct kvm_vcpu *vcpu);
 279         void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
 280         int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
 281         struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
 282         void (*vcpu_free)(struct kvm_vcpu *vcpu);
 283         int (*check_requests)(struct kvm_vcpu *vcpu);
 284         int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
 285         void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
 286         int (*prepare_memory_region)(struct kvm *kvm,
 287                                      struct kvm_memory_slot *memslot,
 288                                      const struct kvm_userspace_memory_region *mem);
 289         void (*commit_memory_region)(struct kvm *kvm,
 290                                      const struct kvm_userspace_memory_region *mem,
 291                                      const struct kvm_memory_slot *old,
 292                                      const struct kvm_memory_slot *new);
 293         int (*unmap_hva)(struct kvm *kvm, unsigned long hva);
 294         int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
 295                            unsigned long end);
 296         int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
 297         int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
 298         void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
 299         void (*mmu_destroy)(struct kvm_vcpu *vcpu);
 300         void (*free_memslot)(struct kvm_memory_slot *free,
 301                              struct kvm_memory_slot *dont);
 302         int (*create_memslot)(struct kvm_memory_slot *slot,
 303                               unsigned long npages);
 304         int (*init_vm)(struct kvm *kvm);
 305         void (*destroy_vm)(struct kvm *kvm);
 306         int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
 307         int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
 308                           unsigned int inst, int *advance);
 309         int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
 310         int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
 311         void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
 312         long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
 313                               unsigned long arg);
 314         int (*hcall_implemented)(unsigned long hcall);
 315         int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
 316                                        struct irq_bypass_producer *);
 317         void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
 318                                         struct irq_bypass_producer *);
 319         int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
 320         int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
 321         int (*set_smt_mode)(struct kvm *kvm, unsigned long mode,
 322                             unsigned long flags);
 323 };
 324
 325 extern struct kvmppc_ops *kvmppc_hv_ops;
 326 extern struct kvmppc_ops *kvmppc_pr_ops;
 327
 328 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
 329                                         enum instruction_type type, u32 *inst)
 330 {
 331         int ret = EMULATE_DONE;
 332         u32 fetched_inst;
 333
 334         /* Load the instruction manually if it failed to do so in the
 335          * exit path */
 336         if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
 337                 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
 338
 339         /*  Write fetch_failed unswapped if the fetch failed */
 340         if (ret == EMULATE_DONE)
 341                 fetched_inst = kvmppc_need_byteswap(vcpu) ?
 342                                 swab32(vcpu->arch.last_inst) :
 343                                 vcpu->arch.last_inst;
 344         else
 345                 fetched_inst = vcpu->arch.last_inst;
 346
 347         *inst = fetched_inst;
 348         return ret;
 349 }
 350
 351 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
 352 {
 353         return kvm->arch.kvm_ops == kvmppc_hv_ops;
 354 }
 355
 356 extern int kvmppc_hwrng_present(void);
 357
 358 /*
 359  * Cuts out inst bits with ordering according to spec.
 360  * That means the leftmost bit is zero. All given bits are included.
 361  */
 362 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
 363 {
 364         u32 r;
 365         u32 mask;
 366
 367         BUG_ON(msb > lsb);
 368
 369         mask = (1 << (lsb - msb + 1)) - 1;
 370         r = (inst >> (63 - lsb)) & mask;
 371
 372         return r;
 373 }
 374
 375 /*
 376  * Replaces inst bits with ordering according to spec.
 377  */
 378 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
 379 {
 380         u32 r;
 381         u32 mask;
 382
 383         BUG_ON(msb > lsb);
 384
 385         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
 386         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
 387
 388         return r;
 389 }
 390
 391 #define one_reg_size(id)        \
 392         (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
 393
 394 #define get_reg_val(id, reg)    ({              \
 395         union kvmppc_one_reg __u;               \
 396         switch (one_reg_size(id)) {             \
 397         case 4: __u.wval = (reg); break;        \
 398         case 8: __u.dval = (reg); break;        \
 399         default: BUG();                         \
 400         }                                       \
 401         __u;                                    \
 402 })
 403
 404
 405 #define set_reg_val(id, val)    ({              \
 406         u64 __v;                                \
 407         switch (one_reg_size(id)) {             \
 408         case 4: __v = (val).wval; break;        \
 409         case 8: __v = (val).dval; break;        \
 410         default: BUG();                         \
 411         }                                       \
 412         __v;                                    \
 413 })
 414
 415 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 416 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 417
 418 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 419 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 420
 421 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 422 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 423 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
 424 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
 425
 426 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
 427
 428 struct openpic;
 429
 430 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
 431 extern void kvm_cma_reserve(void) __init;
 432 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 433 {
 434         paca[cpu].kvm_hstate.xics_phys = (void __iomem *)addr;
 435 }
 436
 437 static inline void kvmppc_set_xive_tima(int cpu,
 438                                         unsigned long phys_addr,
 439                                         void __iomem *virt_addr)
 440 {
 441         paca[cpu].kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
 442         paca[cpu].kvm_hstate.xive_tima_virt = virt_addr;
 443 }
 444
 445 static inline u32 kvmppc_get_xics_latch(void)
 446 {
 447         u32 xirr;
 448
 449         xirr = get_paca()->kvm_hstate.saved_xirr;
 450         get_paca()->kvm_hstate.saved_xirr = 0;
 451         return xirr;
 452 }
 453
 454 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
 455 {
 456         paca[cpu].kvm_hstate.host_ipi = host_ipi;
 457 }
 458
 459 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
 460 {
 461         vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
 462 }
 463
 464 extern void kvm_hv_vm_activated(void);
 465 extern void kvm_hv_vm_deactivated(void);
 466 extern bool kvm_hv_mode_active(void);
 467
 468 #else
 469 static inline void __init kvm_cma_reserve(void)
 470 {}
 471
 472 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 473 {}
 474
 475 static inline void kvmppc_set_xive_tima(int cpu,
 476                                         unsigned long phys_addr,
 477                                         void __iomem *virt_addr)
 478 {}
 479
 480 static inline u32 kvmppc_get_xics_latch(void)
 481 {
 482         return 0;
 483 }
 484
 485 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
 486 {}
 487
 488 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
 489 {
 490         kvm_vcpu_kick(vcpu);
 491 }
 492
 493 static inline bool kvm_hv_mode_active(void)             { return false; }
 494
 495 #endif
 496
 497 #ifdef CONFIG_KVM_XICS
 498 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
 499 {
 500         return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
 501 }
 502
 503 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
 504                                 struct kvm *kvm)
 505 {
 506         if (kvm && kvm_irq_bypass)
 507                 return kvm->arch.pimap;
 508         return NULL;
 509 }
 510
 511 extern void kvmppc_alloc_host_rm_ops(void);
 512 extern void kvmppc_free_host_rm_ops(void);
 513 extern void kvmppc_free_pimap(struct kvm *kvm);
 514 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
 515 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
 516 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
 517 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
 518 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
 519 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
 520                         struct kvm_vcpu *vcpu, u32 cpu);
 521 extern void kvmppc_xics_ipi_action(void);
 522 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
 523                                    unsigned long host_irq);
 524 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
 525                                    unsigned long host_irq);
 526 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
 527                                         struct kvmppc_irq_map *irq_map,
 528                                         struct kvmppc_passthru_irqmap *pimap,
 529                                         bool *again);
 530
 531 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
 532                                int level, bool line_status);
 533
 534 extern int h_ipi_redirect;
 535 #else
 536 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
 537                                 struct kvm *kvm)
 538         { return NULL; }
 539 static inline void kvmppc_alloc_host_rm_ops(void) {};
 540 static inline void kvmppc_free_host_rm_ops(void) {};
 541 static inline void kvmppc_free_pimap(struct kvm *kvm) {};
 542 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
 543         { return 0; }
 544 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
 545         { return 0; }
 546 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
 547 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
 548         { return 0; }
 549 #endif
 550
 551 #ifdef CONFIG_KVM_XIVE
 552 /*
 553  * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
 554  * ie. P9 new interrupt controller, while the second "xive" is the legacy
 555  * "eXternal Interrupt Vector Entry" which is the configuration of an
 556  * interrupt on the "xics" interrupt controller on P8 and earlier. Those
 557  * two function consume or produce a legacy "XIVE" state from the
 558  * new "XIVE" interrupt controller.
 559  */
 560 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
 561                                 u32 priority);
 562 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
 563                                 u32 *priority);
 564 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
 565 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
 566 extern void kvmppc_xive_init_module(void);
 567 extern void kvmppc_xive_exit_module(void);
 568
 569 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
 570                                     struct kvm_vcpu *vcpu, u32 cpu);
 571 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
 572 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
 573                                   struct irq_desc *host_desc);
 574 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
 575                                   struct irq_desc *host_desc);
 576 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
 577 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
 578
 579 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
 580                                int level, bool line_status);
 581 #else
 582 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
 583                                        u32 priority) { return -1; }
 584 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
 585                                        u32 *priority) { return -1; }
 586 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
 587 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
 588 static inline void kvmppc_xive_init_module(void) { }
 589 static inline void kvmppc_xive_exit_module(void) { }
 590
 591 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
 592                                            struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
 593 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
 594 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
 595                                          struct irq_desc *host_desc) { return -ENODEV; }
 596 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
 597                                          struct irq_desc *host_desc) { return -ENODEV; }
 598 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
 599 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
 600
 601 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
 602                                       int level, bool line_status) { return -ENODEV; }
 603 #endif /* CONFIG_KVM_XIVE */
 604
 605 /*
 606  * Prototypes for functions called only from assembler code.
 607  * Having prototypes reduces sparse errors.
 608  */
 609 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 610                          unsigned long ioba, unsigned long tce);
 611 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
 612                                   unsigned long liobn, unsigned long ioba,
 613                                   unsigned long tce_list, unsigned long npages);
 614 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
 615                            unsigned long liobn, unsigned long ioba,
 616                            unsigned long tce_value, unsigned long npages);
 617 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
 618                             unsigned int yield_count);
 619 long kvmppc_h_random(struct kvm_vcpu *vcpu);
 620 void kvmhv_commence_exit(int trap);
 621 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
 622 void kvmppc_subcore_enter_guest(void);
 623 void kvmppc_subcore_exit_guest(void);
 624 long kvmppc_realmode_hmi_handler(void);
 625 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
 626                     long pte_index, unsigned long pteh, unsigned long ptel);
 627 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
 628                      unsigned long pte_index, unsigned long avpn);
 629 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
 630 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
 631                       unsigned long pte_index, unsigned long avpn,
 632                       unsigned long va);
 633 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
 634                    unsigned long pte_index);
 635 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
 636                         unsigned long pte_index);
 637 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
 638                         unsigned long pte_index);
 639 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
 640                           unsigned long slb_v, unsigned int status, bool data);
 641 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
 642 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu);
 643 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server);
 644 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
 645                     unsigned long mfrr);
 646 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
 647 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
 648
 649 /*
 650  * Host-side operations we want to set up while running in real
 651  * mode in the guest operating on the xics.
 652  * Currently only VCPU wakeup is supported.
 653  */
 654
 655 union kvmppc_rm_state {
 656         unsigned long raw;
 657         struct {
 658                 u32 in_host;
 659                 u32 rm_action;
 660         };
 661 };
 662
 663 struct kvmppc_host_rm_core {
 664         union kvmppc_rm_state rm_state;
 665         void *rm_data;
 666         char pad[112];
 667 };
 668
 669 struct kvmppc_host_rm_ops {
 670         struct kvmppc_host_rm_core      *rm_core;
 671         void            (*vcpu_kick)(struct kvm_vcpu *vcpu);
 672 };
 673
 674 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
 675
 676 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
 677 {
 678 #ifdef CONFIG_KVM_BOOKE_HV
 679         return mfspr(SPRN_GEPR);
 680 #elif defined(CONFIG_BOOKE)
 681         return vcpu->arch.epr;
 682 #else
 683         return 0;
 684 #endif
 685 }
 686
 687 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
 688 {
 689 #ifdef CONFIG_KVM_BOOKE_HV
 690         mtspr(SPRN_GEPR, epr);
 691 #elif defined(CONFIG_BOOKE)
 692         vcpu->arch.epr = epr;
 693 #endif
 694 }
 695
 696 #ifdef CONFIG_KVM_MPIC
 697
 698 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
 699 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
 700                              u32 cpu);
 701 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
 702
 703 #else
 704
 705 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
 706 {
 707 }
 708
 709 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
 710                 struct kvm_vcpu *vcpu, u32 cpu)
 711 {
 712         return -EINVAL;
 713 }
 714
 715 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
 716                 struct kvm_vcpu *vcpu)
 717 {
 718 }
 719
 720 #endif /* CONFIG_KVM_MPIC */
 721
 722 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
 723                               struct kvm_config_tlb *cfg);
 724 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
 725                              struct kvm_dirty_tlb *cfg);
 726
 727 long kvmppc_alloc_lpid(void);
 728 void kvmppc_claim_lpid(long lpid);
 729 void kvmppc_free_lpid(long lpid);
 730 void kvmppc_init_lpid(unsigned long nr_lpids);
 731
 732 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
 733 {
 734         struct page *page;
 735         /*
 736          * We can only access pages that the kernel maps
 737          * as memory. Bail out for unmapped ones.
 738          */
 739         if (!pfn_valid(pfn))
 740                 return;
 741
 742         /* Clear i-cache for new pages */
 743         page = pfn_to_page(pfn);
 744         if (!test_bit(PG_arch_1, &page->flags)) {
 745                 flush_dcache_icache_page(page);
 746                 set_bit(PG_arch_1, &page->flags);
 747         }
 748 }
 749
 750 /*
 751  * Shared struct helpers. The shared struct can be little or big endian,
 752  * depending on the guest endianness. So expose helpers to all of them.
 753  */
 754 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
 755 {
 756 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
 757         /* Only Book3S_64 PR supports bi-endian for now */
 758         return vcpu->arch.shared_big_endian;
 759 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
 760         /* Book3s_64 HV on little endian is always little endian */
 761         return false;
 762 #else
 763         return true;
 764 #endif
 765 }
 766
 767 #define SPRNG_WRAPPER_GET(reg, bookehv_spr)                             \
 768 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu)             \
 769 {                                                                       \
 770         return mfspr(bookehv_spr);                                      \
 771 }                                                                       \
 772
 773 #define SPRNG_WRAPPER_SET(reg, bookehv_spr)                             \
 774 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val)   \
 775 {                                                                       \
 776         mtspr(bookehv_spr, val);                                                \
 777 }                                                                       \
 778
 779 #define SHARED_WRAPPER_GET(reg, size)                                   \
 780 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu)           \
 781 {                                                                       \
 782         if (kvmppc_shared_big_endian(vcpu))                             \
 783                return be##size##_to_cpu(vcpu->arch.shared->reg);        \
 784         else                                                            \
 785                return le##size##_to_cpu(vcpu->arch.shared->reg);        \
 786 }                                                                       \
 787
 788 #define SHARED_WRAPPER_SET(reg, size)                                   \
 789 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
 790 {                                                                       \
 791         if (kvmppc_shared_big_endian(vcpu))                             \
 792                vcpu->arch.shared->reg = cpu_to_be##size(val);           \
 793         else                                                            \
 794                vcpu->arch.shared->reg = cpu_to_le##size(val);           \
 795 }                                                                       \
 796
 797 #define SHARED_WRAPPER(reg, size)                                       \
 798         SHARED_WRAPPER_GET(reg, size)                                   \
 799         SHARED_WRAPPER_SET(reg, size)                                   \
 800
 801 #define SPRNG_WRAPPER(reg, bookehv_spr)                                 \
 802         SPRNG_WRAPPER_GET(reg, bookehv_spr)                             \
 803         SPRNG_WRAPPER_SET(reg, bookehv_spr)                             \
 804
 805 #ifdef CONFIG_KVM_BOOKE_HV
 806
 807 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)                    \
 808         SPRNG_WRAPPER(reg, bookehv_spr)                                 \
 809
 810 #else
 811
 812 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)                    \
 813         SHARED_WRAPPER(reg, size)                                       \
 814
 815 #endif
 816
 817 SHARED_WRAPPER(critical, 64)
 818 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
 819 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
 820 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
 821 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
 822 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
 823 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
 824 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
 825 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
 826 SHARED_WRAPPER_GET(msr, 64)
 827 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
 828 {
 829         if (kvmppc_shared_big_endian(vcpu))
 830                vcpu->arch.shared->msr = cpu_to_be64(val);
 831         else
 832                vcpu->arch.shared->msr = cpu_to_le64(val);
 833 }
 834 SHARED_WRAPPER(dsisr, 32)
 835 SHARED_WRAPPER(int_pending, 32)
 836 SHARED_WRAPPER(sprg4, 64)
 837 SHARED_WRAPPER(sprg5, 64)
 838 SHARED_WRAPPER(sprg6, 64)
 839 SHARED_WRAPPER(sprg7, 64)
 840
 841 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
 842 {
 843         if (kvmppc_shared_big_endian(vcpu))
 844                return be32_to_cpu(vcpu->arch.shared->sr[nr]);
 845         else
 846                return le32_to_cpu(vcpu->arch.shared->sr[nr]);
 847 }
 848
 849 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
 850 {
 851         if (kvmppc_shared_big_endian(vcpu))
 852                vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
 853         else
 854                vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
 855 }
 856
 857 /*
 858  * Please call after prepare_to_enter. This function puts the lazy ee and irq
 859  * disabled tracking state back to normal mode, without actually enabling
 860  * interrupts.
 861  */
 862 static inline void kvmppc_fix_ee_before_entry(void)
 863 {
 864         trace_hardirqs_on();
 865
 866 #ifdef CONFIG_PPC64
 867         /*
 868          * To avoid races, the caller must have gone directly from having
 869          * interrupts fully-enabled to hard-disabled.
 870          */
 871         WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
 872
 873         /* Only need to enable IRQs by hard enabling them after this */
 874         local_paca->irq_happened = 0;
 875         local_paca->soft_enabled = 1;
 876 #endif
 877 }
 878
 879 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
 880 {
 881         ulong ea;
 882         ulong msr_64bit = 0;
 883
 884         ea = kvmppc_get_gpr(vcpu, rb);
 885         if (ra)
 886                 ea += kvmppc_get_gpr(vcpu, ra);
 887
 888 #if defined(CONFIG_PPC_BOOK3E_64)
 889         msr_64bit = MSR_CM;
 890 #elif defined(CONFIG_PPC_BOOK3S_64)
 891         msr_64bit = MSR_SF;
 892 #endif
 893
 894         if (!(kvmppc_get_msr(vcpu) & msr_64bit))
 895                 ea = (uint32_t)ea;
 896
 897         return ea;
 898 }
 899
 900 extern void xics_wake_cpu(int cpu);
 901
 902 #endif /* __POWERPC_KVM_PPC_H__ */