arch/powerpc/kvm/book3s.c

   1 /*
   2  * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
   3  *
   4  * Authors:
   5  *    Alexander Graf <agraf@suse.de>
   6  *    Kevin Wolf <mail@kevin-wolf.de>
   7  *
   8  * Description:
   9  * This file is derived from arch/powerpc/kvm/44x.c,
  10  * by Hollis Blanchard <hollisb@us.ibm.com>.
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License, version 2, as
  14  * published by the Free Software Foundation.
  15  */
  16
  17 #include <linux/kvm_host.h>
  18 #include <linux/err.h>
  19 #include <linux/export.h>
  20 #include <linux/slab.h>
  21 #include <linux/module.h>
  22 #include <linux/miscdevice.h>
  23
  24 #include <asm/reg.h>
  25 #include <asm/cputable.h>
  26 #include <asm/cacheflush.h>
  27 #include <asm/tlbflush.h>
  28 #include <asm/uaccess.h>
  29 #include <asm/io.h>
  30 #include <asm/kvm_ppc.h>
  31 #include <asm/kvm_book3s.h>
  32 #include <asm/mmu_context.h>
  33 #include <asm/page.h>
  34 #include <linux/gfp.h>
  35 #include <linux/sched.h>
  36 #include <linux/vmalloc.h>
  37 #include <linux/highmem.h>
  38
  39 #include "book3s.h"
  40 #include "trace.h"
  41
  42 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
  43
  44 /* #define EXIT_DEBUG */
  45
  46 struct kvm_stats_debugfs_item debugfs_entries[] = {
  47         { "exits",       VCPU_STAT(sum_exits) },
  48         { "mmio",        VCPU_STAT(mmio_exits) },
  49         { "sig",         VCPU_STAT(signal_exits) },
  50         { "sysc",        VCPU_STAT(syscall_exits) },
  51         { "inst_emu",    VCPU_STAT(emulated_inst_exits) },
  52         { "dec",         VCPU_STAT(dec_exits) },
  53         { "ext_intr",    VCPU_STAT(ext_intr_exits) },
  54         { "queue_intr",  VCPU_STAT(queue_intr) },
  55         { "halt_successful_poll", VCPU_STAT(halt_successful_poll), },
  56         { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), },
  57         { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
  58         { "halt_wakeup", VCPU_STAT(halt_wakeup) },
  59         { "pf_storage",  VCPU_STAT(pf_storage) },
  60         { "sp_storage",  VCPU_STAT(sp_storage) },
  61         { "pf_instruc",  VCPU_STAT(pf_instruc) },
  62         { "sp_instruc",  VCPU_STAT(sp_instruc) },
  63         { "ld",          VCPU_STAT(ld) },
  64         { "ld_slow",     VCPU_STAT(ld_slow) },
  65         { "st",          VCPU_STAT(st) },
  66         { "st_slow",     VCPU_STAT(st_slow) },
  67         { NULL }
  68 };
  69
  70 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
  71 {
  72         if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
  73                 ulong pc = kvmppc_get_pc(vcpu);
  74                 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
  75                         kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
  76                 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
  77         }
  78 }
  79 EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
  80
  81 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
  82 {
  83         if (!is_kvmppc_hv_enabled(vcpu->kvm))
  84                 return to_book3s(vcpu)->hior;
  85         return 0;
  86 }
  87
  88 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
  89                         unsigned long pending_now, unsigned long old_pending)
  90 {
  91         if (is_kvmppc_hv_enabled(vcpu->kvm))
  92                 return;
  93         if (pending_now)
  94                 kvmppc_set_int_pending(vcpu, 1);
  95         else if (old_pending)
  96                 kvmppc_set_int_pending(vcpu, 0);
  97 }
  98
  99 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
 100 {
 101         ulong crit_raw;
 102         ulong crit_r1;
 103         bool crit;
 104
 105         if (is_kvmppc_hv_enabled(vcpu->kvm))
 106                 return false;
 107
 108         crit_raw = kvmppc_get_critical(vcpu);
 109         crit_r1 = kvmppc_get_gpr(vcpu, 1);
 110
 111         /* Truncate crit indicators in 32 bit mode */
 112         if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
 113                 crit_raw &= 0xffffffff;
 114                 crit_r1 &= 0xffffffff;
 115         }
 116
 117         /* Critical section when crit == r1 */
 118         crit = (crit_raw == crit_r1);
 119         /* ... and we're in supervisor mode */
 120         crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
 121
 122         return crit;
 123 }
 124
 125 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
 126 {
 127         kvmppc_unfixup_split_real(vcpu);
 128         kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
 129         kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
 130         kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
 131         vcpu->arch.mmu.reset_msr(vcpu);
 132 }
 133
 134 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
 135 {
 136         unsigned int prio;
 137
 138         switch (vec) {
 139         case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET;         break;
 140         case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK;        break;
 141         case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE;         break;
 142         case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT;         break;
 143         case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE;         break;
 144         case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT;         break;
 145         case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL;             break;
 146         case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL;       break;
 147         case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT;            break;
 148         case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM;              break;
 149         case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL;           break;
 150         case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER;          break;
 151         case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL;              break;
 152         case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG;                break;
 153         case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC;              break;
 154         case 0xf40: prio = BOOK3S_IRQPRIO_VSX;                  break;
 155         case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL;          break;
 156         default:    prio = BOOK3S_IRQPRIO_MAX;                  break;
 157         }
 158
 159         return prio;
 160 }
 161
 162 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
 163                                           unsigned int vec)
 164 {
 165         unsigned long old_pending = vcpu->arch.pending_exceptions;
 166
 167         clear_bit(kvmppc_book3s_vec2irqprio(vec),
 168                   &vcpu->arch.pending_exceptions);
 169
 170         kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
 171                                   old_pending);
 172 }
 173
 174 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
 175 {
 176         vcpu->stat.queue_intr++;
 177
 178         set_bit(kvmppc_book3s_vec2irqprio(vec),
 179                 &vcpu->arch.pending_exceptions);
 180 #ifdef EXIT_DEBUG
 181         printk(KERN_INFO "Queueing interrupt %x\n", vec);
 182 #endif
 183 }
 184 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
 185
 186 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
 187 {
 188         /* might as well deliver this straight away */
 189         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
 190 }
 191 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
 192
 193 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
 194 {
 195         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
 196 }
 197 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
 198
 199 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
 200 {
 201         return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
 202 }
 203 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
 204
 205 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
 206 {
 207         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
 208 }
 209 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
 210
 211 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 212                                 struct kvm_interrupt *irq)
 213 {
 214         unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
 215
 216         if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
 217                 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
 218
 219         kvmppc_book3s_queue_irqprio(vcpu, vec);
 220 }
 221
 222 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
 223 {
 224         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
 225         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
 226 }
 227
 228 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
 229                                     ulong flags)
 230 {
 231         kvmppc_set_dar(vcpu, dar);
 232         kvmppc_set_dsisr(vcpu, flags);
 233         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
 234 }
 235
 236 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
 237 {
 238         u64 msr = kvmppc_get_msr(vcpu);
 239         msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
 240         msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
 241         kvmppc_set_msr_fast(vcpu, msr);
 242         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
 243 }
 244
 245 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
 246                                          unsigned int priority)
 247 {
 248         int deliver = 1;
 249         int vec = 0;
 250         bool crit = kvmppc_critical_section(vcpu);
 251
 252         switch (priority) {
 253         case BOOK3S_IRQPRIO_DECREMENTER:
 254                 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
 255                 vec = BOOK3S_INTERRUPT_DECREMENTER;
 256                 break;
 257         case BOOK3S_IRQPRIO_EXTERNAL:
 258         case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
 259                 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
 260                 vec = BOOK3S_INTERRUPT_EXTERNAL;
 261                 break;
 262         case BOOK3S_IRQPRIO_SYSTEM_RESET:
 263                 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
 264                 break;
 265         case BOOK3S_IRQPRIO_MACHINE_CHECK:
 266                 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
 267                 break;
 268         case BOOK3S_IRQPRIO_DATA_STORAGE:
 269                 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
 270                 break;
 271         case BOOK3S_IRQPRIO_INST_STORAGE:
 272                 vec = BOOK3S_INTERRUPT_INST_STORAGE;
 273                 break;
 274         case BOOK3S_IRQPRIO_DATA_SEGMENT:
 275                 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
 276                 break;
 277         case BOOK3S_IRQPRIO_INST_SEGMENT:
 278                 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
 279                 break;
 280         case BOOK3S_IRQPRIO_ALIGNMENT:
 281                 vec = BOOK3S_INTERRUPT_ALIGNMENT;
 282                 break;
 283         case BOOK3S_IRQPRIO_PROGRAM:
 284                 vec = BOOK3S_INTERRUPT_PROGRAM;
 285                 break;
 286         case BOOK3S_IRQPRIO_VSX:
 287                 vec = BOOK3S_INTERRUPT_VSX;
 288                 break;
 289         case BOOK3S_IRQPRIO_ALTIVEC:
 290                 vec = BOOK3S_INTERRUPT_ALTIVEC;
 291                 break;
 292         case BOOK3S_IRQPRIO_FP_UNAVAIL:
 293                 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
 294                 break;
 295         case BOOK3S_IRQPRIO_SYSCALL:
 296                 vec = BOOK3S_INTERRUPT_SYSCALL;
 297                 break;
 298         case BOOK3S_IRQPRIO_DEBUG:
 299                 vec = BOOK3S_INTERRUPT_TRACE;
 300                 break;
 301         case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
 302                 vec = BOOK3S_INTERRUPT_PERFMON;
 303                 break;
 304         case BOOK3S_IRQPRIO_FAC_UNAVAIL:
 305                 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
 306                 break;
 307         default:
 308                 deliver = 0;
 309                 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
 310                 break;
 311         }
 312
 313 #if 0
 314         printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
 315 #endif
 316
 317         if (deliver)
 318                 kvmppc_inject_interrupt(vcpu, vec, 0);
 319
 320         return deliver;
 321 }
 322
 323 /*
 324  * This function determines if an irqprio should be cleared once issued.
 325  */
 326 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
 327 {
 328         switch (priority) {
 329                 case BOOK3S_IRQPRIO_DECREMENTER:
 330                         /* DEC interrupts get cleared by mtdec */
 331                         return false;
 332                 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
 333                         /* External interrupts get cleared by userspace */
 334                         return false;
 335         }
 336
 337         return true;
 338 }
 339
 340 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
 341 {
 342         unsigned long *pending = &vcpu->arch.pending_exceptions;
 343         unsigned long old_pending = vcpu->arch.pending_exceptions;
 344         unsigned int priority;
 345
 346 #ifdef EXIT_DEBUG
 347         if (vcpu->arch.pending_exceptions)
 348                 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
 349 #endif
 350         priority = __ffs(*pending);
 351         while (priority < BOOK3S_IRQPRIO_MAX) {
 352                 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
 353                     clear_irqprio(vcpu, priority)) {
 354                         clear_bit(priority, &vcpu->arch.pending_exceptions);
 355                         break;
 356                 }
 357
 358                 priority = find_next_bit(pending,
 359                                          BITS_PER_BYTE * sizeof(*pending),
 360                                          priority + 1);
 361         }
 362
 363         /* Tell the guest about our interrupt status */
 364         kvmppc_update_int_pending(vcpu, *pending, old_pending);
 365
 366         return 0;
 367 }
 368 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
 369
 370 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
 371                         bool *writable)
 372 {
 373         ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
 374         gfn_t gfn = gpa >> PAGE_SHIFT;
 375
 376         if (!(kvmppc_get_msr(vcpu) & MSR_SF))
 377                 mp_pa = (uint32_t)mp_pa;
 378
 379         /* Magic page override */
 380         gpa &= ~0xFFFULL;
 381         if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
 382                 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
 383                 kvm_pfn_t pfn;
 384
 385                 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
 386                 get_page(pfn_to_page(pfn));
 387                 if (writable)
 388                         *writable = true;
 389                 return pfn;
 390         }
 391
 392         return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
 393 }
 394 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
 395
 396 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
 397                  enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
 398 {
 399         bool data = (xlid == XLATE_DATA);
 400         bool iswrite = (xlrw == XLATE_WRITE);
 401         int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
 402         int r;
 403
 404         if (relocated) {
 405                 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
 406         } else {
 407                 pte->eaddr = eaddr;
 408                 pte->raddr = eaddr & KVM_PAM;
 409                 pte->vpage = VSID_REAL | eaddr >> 12;
 410                 pte->may_read = true;
 411                 pte->may_write = true;
 412                 pte->may_execute = true;
 413                 r = 0;
 414
 415                 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
 416                     !data) {
 417                         if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
 418                             ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
 419                         pte->raddr &= ~SPLIT_HACK_MASK;
 420                 }
 421         }
 422
 423         return r;
 424 }
 425
 426 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
 427                                          u32 *inst)
 428 {
 429         ulong pc = kvmppc_get_pc(vcpu);
 430         int r;
 431
 432         if (type == INST_SC)
 433                 pc -= 4;
 434
 435         r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
 436         if (r == EMULATE_DONE)
 437                 return r;
 438         else
 439                 return EMULATE_AGAIN;
 440 }
 441 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
 442
 443 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 444 {
 445         return 0;
 446 }
 447
 448 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
 449 {
 450         return 0;
 451 }
 452
 453 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
 454 {
 455 }
 456
 457 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
 458                                   struct kvm_sregs *sregs)
 459 {
 460         return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
 461 }
 462
 463 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
 464                                   struct kvm_sregs *sregs)
 465 {
 466         return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
 467 }
 468
 469 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 470 {
 471         int i;
 472
 473         regs->pc = kvmppc_get_pc(vcpu);
 474         regs->cr = kvmppc_get_cr(vcpu);
 475         regs->ctr = kvmppc_get_ctr(vcpu);
 476         regs->lr = kvmppc_get_lr(vcpu);
 477         regs->xer = kvmppc_get_xer(vcpu);
 478         regs->msr = kvmppc_get_msr(vcpu);
 479         regs->srr0 = kvmppc_get_srr0(vcpu);
 480         regs->srr1 = kvmppc_get_srr1(vcpu);
 481         regs->pid = vcpu->arch.pid;
 482         regs->sprg0 = kvmppc_get_sprg0(vcpu);
 483         regs->sprg1 = kvmppc_get_sprg1(vcpu);
 484         regs->sprg2 = kvmppc_get_sprg2(vcpu);
 485         regs->sprg3 = kvmppc_get_sprg3(vcpu);
 486         regs->sprg4 = kvmppc_get_sprg4(vcpu);
 487         regs->sprg5 = kvmppc_get_sprg5(vcpu);
 488         regs->sprg6 = kvmppc_get_sprg6(vcpu);
 489         regs->sprg7 = kvmppc_get_sprg7(vcpu);
 490
 491         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 492                 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
 493
 494         return 0;
 495 }
 496
 497 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 498 {
 499         int i;
 500
 501         kvmppc_set_pc(vcpu, regs->pc);
 502         kvmppc_set_cr(vcpu, regs->cr);
 503         kvmppc_set_ctr(vcpu, regs->ctr);
 504         kvmppc_set_lr(vcpu, regs->lr);
 505         kvmppc_set_xer(vcpu, regs->xer);
 506         kvmppc_set_msr(vcpu, regs->msr);
 507         kvmppc_set_srr0(vcpu, regs->srr0);
 508         kvmppc_set_srr1(vcpu, regs->srr1);
 509         kvmppc_set_sprg0(vcpu, regs->sprg0);
 510         kvmppc_set_sprg1(vcpu, regs->sprg1);
 511         kvmppc_set_sprg2(vcpu, regs->sprg2);
 512         kvmppc_set_sprg3(vcpu, regs->sprg3);
 513         kvmppc_set_sprg4(vcpu, regs->sprg4);
 514         kvmppc_set_sprg5(vcpu, regs->sprg5);
 515         kvmppc_set_sprg6(vcpu, regs->sprg6);
 516         kvmppc_set_sprg7(vcpu, regs->sprg7);
 517
 518         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 519                 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
 520
 521         return 0;
 522 }
 523
 524 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 525 {
 526         return -ENOTSUPP;
 527 }
 528
 529 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 530 {
 531         return -ENOTSUPP;
 532 }
 533
 534 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
 535                         union kvmppc_one_reg *val)
 536 {
 537         int r = 0;
 538         long int i;
 539
 540         r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
 541         if (r == -EINVAL) {
 542                 r = 0;
 543                 switch (id) {
 544                 case KVM_REG_PPC_DAR:
 545                         *val = get_reg_val(id, kvmppc_get_dar(vcpu));
 546                         break;
 547                 case KVM_REG_PPC_DSISR:
 548                         *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
 549                         break;
 550                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
 551                         i = id - KVM_REG_PPC_FPR0;
 552                         *val = get_reg_val(id, VCPU_FPR(vcpu, i));
 553                         break;
 554                 case KVM_REG_PPC_FPSCR:
 555                         *val = get_reg_val(id, vcpu->arch.fp.fpscr);
 556                         break;
 557 #ifdef CONFIG_VSX
 558                 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
 559                         if (cpu_has_feature(CPU_FTR_VSX)) {
 560                                 i = id - KVM_REG_PPC_VSR0;
 561                                 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
 562                                 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
 563                         } else {
 564                                 r = -ENXIO;
 565                         }
 566                         break;
 567 #endif /* CONFIG_VSX */
 568                 case KVM_REG_PPC_DEBUG_INST:
 569                         *val = get_reg_val(id, INS_TW);
 570                         break;
 571 #ifdef CONFIG_KVM_XICS
 572                 case KVM_REG_PPC_ICP_STATE:
 573                         if (!vcpu->arch.icp) {
 574                                 r = -ENXIO;
 575                                 break;
 576                         }
 577                         *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
 578                         break;
 579 #endif /* CONFIG_KVM_XICS */
 580                 case KVM_REG_PPC_FSCR:
 581                         *val = get_reg_val(id, vcpu->arch.fscr);
 582                         break;
 583                 case KVM_REG_PPC_TAR:
 584                         *val = get_reg_val(id, vcpu->arch.tar);
 585                         break;
 586                 case KVM_REG_PPC_EBBHR:
 587                         *val = get_reg_val(id, vcpu->arch.ebbhr);
 588                         break;
 589                 case KVM_REG_PPC_EBBRR:
 590                         *val = get_reg_val(id, vcpu->arch.ebbrr);
 591                         break;
 592                 case KVM_REG_PPC_BESCR:
 593                         *val = get_reg_val(id, vcpu->arch.bescr);
 594                         break;
 595                 case KVM_REG_PPC_VTB:
 596                         *val = get_reg_val(id, vcpu->arch.vtb);
 597                         break;
 598                 case KVM_REG_PPC_IC:
 599                         *val = get_reg_val(id, vcpu->arch.ic);
 600                         break;
 601                 default:
 602                         r = -EINVAL;
 603                         break;
 604                 }
 605         }
 606
 607         return r;
 608 }
 609
 610 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
 611                         union kvmppc_one_reg *val)
 612 {
 613         int r = 0;
 614         long int i;
 615
 616         r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
 617         if (r == -EINVAL) {
 618                 r = 0;
 619                 switch (id) {
 620                 case KVM_REG_PPC_DAR:
 621                         kvmppc_set_dar(vcpu, set_reg_val(id, *val));
 622                         break;
 623                 case KVM_REG_PPC_DSISR:
 624                         kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
 625                         break;
 626                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
 627                         i = id - KVM_REG_PPC_FPR0;
 628                         VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
 629                         break;
 630                 case KVM_REG_PPC_FPSCR:
 631                         vcpu->arch.fp.fpscr = set_reg_val(id, *val);
 632                         break;
 633 #ifdef CONFIG_VSX
 634                 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
 635                         if (cpu_has_feature(CPU_FTR_VSX)) {
 636                                 i = id - KVM_REG_PPC_VSR0;
 637                                 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
 638                                 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
 639                         } else {
 640                                 r = -ENXIO;
 641                         }
 642                         break;
 643 #endif /* CONFIG_VSX */
 644 #ifdef CONFIG_KVM_XICS
 645                 case KVM_REG_PPC_ICP_STATE:
 646                         if (!vcpu->arch.icp) {
 647                                 r = -ENXIO;
 648                                 break;
 649                         }
 650                         r = kvmppc_xics_set_icp(vcpu,
 651                                                 set_reg_val(id, *val));
 652                         break;
 653 #endif /* CONFIG_KVM_XICS */
 654                 case KVM_REG_PPC_FSCR:
 655                         vcpu->arch.fscr = set_reg_val(id, *val);
 656                         break;
 657                 case KVM_REG_PPC_TAR:
 658                         vcpu->arch.tar = set_reg_val(id, *val);
 659                         break;
 660                 case KVM_REG_PPC_EBBHR:
 661                         vcpu->arch.ebbhr = set_reg_val(id, *val);
 662                         break;
 663                 case KVM_REG_PPC_EBBRR:
 664                         vcpu->arch.ebbrr = set_reg_val(id, *val);
 665                         break;
 666                 case KVM_REG_PPC_BESCR:
 667                         vcpu->arch.bescr = set_reg_val(id, *val);
 668                         break;
 669                 case KVM_REG_PPC_VTB:
 670                         vcpu->arch.vtb = set_reg_val(id, *val);
 671                         break;
 672                 case KVM_REG_PPC_IC:
 673                         vcpu->arch.ic = set_reg_val(id, *val);
 674                         break;
 675                 default:
 676                         r = -EINVAL;
 677                         break;
 678                 }
 679         }
 680
 681         return r;
 682 }
 683
 684 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 685 {
 686         vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
 687 }
 688
 689 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
 690 {
 691         vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
 692 }
 693
 694 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
 695 {
 696         vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
 697 }
 698 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
 699
 700 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 701 {
 702         return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
 703 }
 704
 705 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
 706                                   struct kvm_translation *tr)
 707 {
 708         return 0;
 709 }
 710
 711 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 712                                         struct kvm_guest_debug *dbg)
 713 {
 714         vcpu->guest_debug = dbg->control;
 715         return 0;
 716 }
 717
 718 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
 719 {
 720         kvmppc_core_queue_dec(vcpu);
 721         kvm_vcpu_kick(vcpu);
 722 }
 723
 724 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
 725 {
 726         return kvm->arch.kvm_ops->vcpu_create(kvm, id);
 727 }
 728
 729 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
 730 {
 731         vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
 732 }
 733
 734 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
 735 {
 736         return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
 737 }
 738
 739 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
 740 {
 741         return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
 742 }
 743
 744 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
 745                               struct kvm_memory_slot *dont)
 746 {
 747         kvm->arch.kvm_ops->free_memslot(free, dont);
 748 }
 749
 750 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
 751                                unsigned long npages)
 752 {
 753         return kvm->arch.kvm_ops->create_memslot(slot, npages);
 754 }
 755
 756 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
 757 {
 758         kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
 759 }
 760
 761 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 762                                 struct kvm_memory_slot *memslot,
 763                                 const struct kvm_userspace_memory_region *mem)
 764 {
 765         return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
 766 }
 767
 768 void kvmppc_core_commit_memory_region(struct kvm *kvm,
 769                                 const struct kvm_userspace_memory_region *mem,
 770                                 const struct kvm_memory_slot *old,
 771                                 const struct kvm_memory_slot *new)
 772 {
 773         kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
 774 }
 775
 776 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
 777 {
 778         return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
 779 }
 780 EXPORT_SYMBOL_GPL(kvm_unmap_hva);
 781
 782 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
 783 {
 784         return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
 785 }
 786
 787 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
 788 {
 789         return kvm->arch.kvm_ops->age_hva(kvm, start, end);
 790 }
 791
 792 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
 793 {
 794         return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
 795 }
 796
 797 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
 798 {
 799         kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
 800 }
 801
 802 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
 803 {
 804         vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
 805 }
 806
 807 int kvmppc_core_init_vm(struct kvm *kvm)
 808 {
 809
 810 #ifdef CONFIG_PPC64
 811         INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
 812         INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
 813 #endif
 814
 815         return kvm->arch.kvm_ops->init_vm(kvm);
 816 }
 817
 818 void kvmppc_core_destroy_vm(struct kvm *kvm)
 819 {
 820         kvm->arch.kvm_ops->destroy_vm(kvm);
 821
 822 #ifdef CONFIG_PPC64
 823         kvmppc_rtas_tokens_free(kvm);
 824         WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
 825 #endif
 826 }
 827
 828 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
 829 {
 830         unsigned long size = kvmppc_get_gpr(vcpu, 4);
 831         unsigned long addr = kvmppc_get_gpr(vcpu, 5);
 832         u64 buf;
 833         int srcu_idx;
 834         int ret;
 835
 836         if (!is_power_of_2(size) || (size > sizeof(buf)))
 837                 return H_TOO_HARD;
 838
 839         srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
 840         ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
 841         srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
 842         if (ret != 0)
 843                 return H_TOO_HARD;
 844
 845         switch (size) {
 846         case 1:
 847                 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
 848                 break;
 849
 850         case 2:
 851                 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
 852                 break;
 853
 854         case 4:
 855                 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
 856                 break;
 857
 858         case 8:
 859                 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
 860                 break;
 861
 862         default:
 863                 BUG();
 864         }
 865
 866         return H_SUCCESS;
 867 }
 868 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
 869
 870 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
 871 {
 872         unsigned long size = kvmppc_get_gpr(vcpu, 4);
 873         unsigned long addr = kvmppc_get_gpr(vcpu, 5);
 874         unsigned long val = kvmppc_get_gpr(vcpu, 6);
 875         u64 buf;
 876         int srcu_idx;
 877         int ret;
 878
 879         switch (size) {
 880         case 1:
 881                 *(u8 *)&buf = val;
 882                 break;
 883
 884         case 2:
 885                 *(__be16 *)&buf = cpu_to_be16(val);
 886                 break;
 887
 888         case 4:
 889                 *(__be32 *)&buf = cpu_to_be32(val);
 890                 break;
 891
 892         case 8:
 893                 *(__be64 *)&buf = cpu_to_be64(val);
 894                 break;
 895
 896         default:
 897                 return H_TOO_HARD;
 898         }
 899
 900         srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
 901         ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
 902         srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
 903         if (ret != 0)
 904                 return H_TOO_HARD;
 905
 906         return H_SUCCESS;
 907 }
 908 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
 909
 910 int kvmppc_core_check_processor_compat(void)
 911 {
 912         /*
 913          * We always return 0 for book3s. We check
 914          * for compatibility while loading the HV
 915          * or PR module
 916          */
 917         return 0;
 918 }
 919
 920 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
 921 {
 922         return kvm->arch.kvm_ops->hcall_implemented(hcall);
 923 }
 924
 925 static int kvmppc_book3s_init(void)
 926 {
 927         int r;
 928
 929         r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
 930         if (r)
 931                 return r;
 932 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 933         r = kvmppc_book3s_init_pr();
 934 #endif
 935         return r;
 936
 937 }
 938
 939 static void kvmppc_book3s_exit(void)
 940 {
 941 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 942         kvmppc_book3s_exit_pr();
 943 #endif
 944         kvm_exit();
 945 }
 946
 947 module_init(kvmppc_book3s_init);
 948 module_exit(kvmppc_book3s_exit);
 949
 950 /* On 32bit this is our one and only kernel module */
 951 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 952 MODULE_ALIAS_MISCDEV(KVM_MINOR);
 953 MODULE_ALIAS("devname:kvm");
 954 #endif