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