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_wakeup", VCPU_STAT(halt_wakeup) },
  56         { "pf_storage",  VCPU_STAT(pf_storage) },
  57         { "sp_storage",  VCPU_STAT(sp_storage) },
  58         { "pf_instruc",  VCPU_STAT(pf_instruc) },
  59         { "sp_instruc",  VCPU_STAT(sp_instruc) },
  60         { "ld",          VCPU_STAT(ld) },
  61         { "ld_slow",     VCPU_STAT(ld_slow) },
  62         { "st",          VCPU_STAT(st) },
  63         { "st_slow",     VCPU_STAT(st_slow) },
  64         { NULL }
  65 };
  66
  67 void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
  68 {
  69 }
  70
  71 void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
  72 {
  73 }
  74
  75 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
  76 {
  77         if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
  78                 ulong pc = kvmppc_get_pc(vcpu);
  79                 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
  80                         kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
  81                 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
  82         }
  83 }
  84 EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
  85
  86 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
  87 {
  88         if (!is_kvmppc_hv_enabled(vcpu->kvm))
  89                 return to_book3s(vcpu)->hior;
  90         return 0;
  91 }
  92
  93 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
  94                         unsigned long pending_now, unsigned long old_pending)
  95 {
  96         if (is_kvmppc_hv_enabled(vcpu->kvm))
  97                 return;
  98         if (pending_now)
  99                 kvmppc_set_int_pending(vcpu, 1);
 100         else if (old_pending)
 101                 kvmppc_set_int_pending(vcpu, 0);
 102 }
 103
 104 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
 105 {
 106         ulong crit_raw;
 107         ulong crit_r1;
 108         bool crit;
 109
 110         if (is_kvmppc_hv_enabled(vcpu->kvm))
 111                 return false;
 112
 113         crit_raw = kvmppc_get_critical(vcpu);
 114         crit_r1 = kvmppc_get_gpr(vcpu, 1);
 115
 116         /* Truncate crit indicators in 32 bit mode */
 117         if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
 118                 crit_raw &= 0xffffffff;
 119                 crit_r1 &= 0xffffffff;
 120         }
 121
 122         /* Critical section when crit == r1 */
 123         crit = (crit_raw == crit_r1);
 124         /* ... and we're in supervisor mode */
 125         crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
 126
 127         return crit;
 128 }
 129
 130 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
 131 {
 132         kvmppc_unfixup_split_real(vcpu);
 133         kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
 134         kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
 135         kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
 136         vcpu->arch.mmu.reset_msr(vcpu);
 137 }
 138
 139 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
 140 {
 141         unsigned int prio;
 142
 143         switch (vec) {
 144         case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET;         break;
 145         case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK;        break;
 146         case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE;         break;
 147         case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT;         break;
 148         case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE;         break;
 149         case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT;         break;
 150         case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL;             break;
 151         case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL;       break;
 152         case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT;            break;
 153         case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM;              break;
 154         case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL;           break;
 155         case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER;          break;
 156         case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL;              break;
 157         case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG;                break;
 158         case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC;              break;
 159         case 0xf40: prio = BOOK3S_IRQPRIO_VSX;                  break;
 160         case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL;          break;
 161         default:    prio = BOOK3S_IRQPRIO_MAX;                  break;
 162         }
 163
 164         return prio;
 165 }
 166
 167 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
 168                                           unsigned int vec)
 169 {
 170         unsigned long old_pending = vcpu->arch.pending_exceptions;
 171
 172         clear_bit(kvmppc_book3s_vec2irqprio(vec),
 173                   &vcpu->arch.pending_exceptions);
 174
 175         kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
 176                                   old_pending);
 177 }
 178
 179 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
 180 {
 181         vcpu->stat.queue_intr++;
 182
 183         set_bit(kvmppc_book3s_vec2irqprio(vec),
 184                 &vcpu->arch.pending_exceptions);
 185 #ifdef EXIT_DEBUG
 186         printk(KERN_INFO "Queueing interrupt %x\n", vec);
 187 #endif
 188 }
 189 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
 190
 191 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
 192 {
 193         /* might as well deliver this straight away */
 194         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
 195 }
 196 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
 197
 198 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
 199 {
 200         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
 201 }
 202 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
 203
 204 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
 205 {
 206         return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
 207 }
 208 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
 209
 210 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
 211 {
 212         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
 213 }
 214 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
 215
 216 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 217                                 struct kvm_interrupt *irq)
 218 {
 219         unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
 220
 221         if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
 222                 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
 223
 224         kvmppc_book3s_queue_irqprio(vcpu, vec);
 225 }
 226
 227 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
 228 {
 229         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
 230         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
 231 }
 232
 233 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
 234                                     ulong flags)
 235 {
 236         kvmppc_set_dar(vcpu, dar);
 237         kvmppc_set_dsisr(vcpu, flags);
 238         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
 239 }
 240
 241 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
 242 {
 243         u64 msr = kvmppc_get_msr(vcpu);
 244         msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
 245         msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
 246         kvmppc_set_msr_fast(vcpu, msr);
 247         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
 248 }
 249
 250 int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
 251 {
 252         int deliver = 1;
 253         int vec = 0;
 254         bool crit = kvmppc_critical_section(vcpu);
 255
 256         switch (priority) {
 257         case BOOK3S_IRQPRIO_DECREMENTER:
 258                 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
 259                 vec = BOOK3S_INTERRUPT_DECREMENTER;
 260                 break;
 261         case BOOK3S_IRQPRIO_EXTERNAL:
 262         case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
 263                 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
 264                 vec = BOOK3S_INTERRUPT_EXTERNAL;
 265                 break;
 266         case BOOK3S_IRQPRIO_SYSTEM_RESET:
 267                 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
 268                 break;
 269         case BOOK3S_IRQPRIO_MACHINE_CHECK:
 270                 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
 271                 break;
 272         case BOOK3S_IRQPRIO_DATA_STORAGE:
 273                 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
 274                 break;
 275         case BOOK3S_IRQPRIO_INST_STORAGE:
 276                 vec = BOOK3S_INTERRUPT_INST_STORAGE;
 277                 break;
 278         case BOOK3S_IRQPRIO_DATA_SEGMENT:
 279                 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
 280                 break;
 281         case BOOK3S_IRQPRIO_INST_SEGMENT:
 282                 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
 283                 break;
 284         case BOOK3S_IRQPRIO_ALIGNMENT:
 285                 vec = BOOK3S_INTERRUPT_ALIGNMENT;
 286                 break;
 287         case BOOK3S_IRQPRIO_PROGRAM:
 288                 vec = BOOK3S_INTERRUPT_PROGRAM;
 289                 break;
 290         case BOOK3S_IRQPRIO_VSX:
 291                 vec = BOOK3S_INTERRUPT_VSX;
 292                 break;
 293         case BOOK3S_IRQPRIO_ALTIVEC:
 294                 vec = BOOK3S_INTERRUPT_ALTIVEC;
 295                 break;
 296         case BOOK3S_IRQPRIO_FP_UNAVAIL:
 297                 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
 298                 break;
 299         case BOOK3S_IRQPRIO_SYSCALL:
 300                 vec = BOOK3S_INTERRUPT_SYSCALL;
 301                 break;
 302         case BOOK3S_IRQPRIO_DEBUG:
 303                 vec = BOOK3S_INTERRUPT_TRACE;
 304                 break;
 305         case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
 306                 vec = BOOK3S_INTERRUPT_PERFMON;
 307                 break;
 308         case BOOK3S_IRQPRIO_FAC_UNAVAIL:
 309                 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
 310                 break;
 311         default:
 312                 deliver = 0;
 313                 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
 314                 break;
 315         }
 316
 317 #if 0
 318         printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
 319 #endif
 320
 321         if (deliver)
 322                 kvmppc_inject_interrupt(vcpu, vec, 0);
 323
 324         return deliver;
 325 }
 326
 327 /*
 328  * This function determines if an irqprio should be cleared once issued.
 329  */
 330 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
 331 {
 332         switch (priority) {
 333                 case BOOK3S_IRQPRIO_DECREMENTER:
 334                         /* DEC interrupts get cleared by mtdec */
 335                         return false;
 336                 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
 337                         /* External interrupts get cleared by userspace */
 338                         return false;
 339         }
 340
 341         return true;
 342 }
 343
 344 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
 345 {
 346         unsigned long *pending = &vcpu->arch.pending_exceptions;
 347         unsigned long old_pending = vcpu->arch.pending_exceptions;
 348         unsigned int priority;
 349
 350 #ifdef EXIT_DEBUG
 351         if (vcpu->arch.pending_exceptions)
 352                 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
 353 #endif
 354         priority = __ffs(*pending);
 355         while (priority < BOOK3S_IRQPRIO_MAX) {
 356                 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
 357                     clear_irqprio(vcpu, priority)) {
 358                         clear_bit(priority, &vcpu->arch.pending_exceptions);
 359                         break;
 360                 }
 361
 362                 priority = find_next_bit(pending,
 363                                          BITS_PER_BYTE * sizeof(*pending),
 364                                          priority + 1);
 365         }
 366
 367         /* Tell the guest about our interrupt status */
 368         kvmppc_update_int_pending(vcpu, *pending, old_pending);
 369
 370         return 0;
 371 }
 372 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
 373
 374 pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
 375                         bool *writable)
 376 {
 377         ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
 378         gfn_t gfn = gpa >> PAGE_SHIFT;
 379
 380         if (!(kvmppc_get_msr(vcpu) & MSR_SF))
 381                 mp_pa = (uint32_t)mp_pa;
 382
 383         /* Magic page override */
 384         gpa &= ~0xFFFULL;
 385         if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
 386                 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
 387                 pfn_t pfn;
 388
 389                 pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
 390                 get_page(pfn_to_page(pfn));
 391                 if (writable)
 392                         *writable = true;
 393                 return pfn;
 394         }
 395
 396         return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
 397 }
 398 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
 399
 400 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
 401                  enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
 402 {
 403         bool data = (xlid == XLATE_DATA);
 404         bool iswrite = (xlrw == XLATE_WRITE);
 405         int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
 406         int r;
 407
 408         if (relocated) {
 409                 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
 410         } else {
 411                 pte->eaddr = eaddr;
 412                 pte->raddr = eaddr & KVM_PAM;
 413                 pte->vpage = VSID_REAL | eaddr >> 12;
 414                 pte->may_read = true;
 415                 pte->may_write = true;
 416                 pte->may_execute = true;
 417                 r = 0;
 418
 419                 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
 420                     !data) {
 421                         if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
 422                             ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
 423                         pte->raddr &= ~SPLIT_HACK_MASK;
 424                 }
 425         }
 426
 427         return r;
 428 }
 429
 430 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
 431                                          u32 *inst)
 432 {
 433         ulong pc = kvmppc_get_pc(vcpu);
 434         int r;
 435
 436         if (type == INST_SC)
 437                 pc -= 4;
 438
 439         r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
 440         if (r == EMULATE_DONE)
 441                 return r;
 442         else
 443                 return EMULATE_AGAIN;
 444 }
 445 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
 446
 447 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 448 {
 449         return 0;
 450 }
 451
 452 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
 453 {
 454         return 0;
 455 }
 456
 457 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
 458 {
 459 }
 460
 461 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
 462                                   struct kvm_sregs *sregs)
 463 {
 464         return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
 465 }
 466
 467 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
 468                                   struct kvm_sregs *sregs)
 469 {
 470         return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
 471 }
 472
 473 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 474 {
 475         int i;
 476
 477         regs->pc = kvmppc_get_pc(vcpu);
 478         regs->cr = kvmppc_get_cr(vcpu);
 479         regs->ctr = kvmppc_get_ctr(vcpu);
 480         regs->lr = kvmppc_get_lr(vcpu);
 481         regs->xer = kvmppc_get_xer(vcpu);
 482         regs->msr = kvmppc_get_msr(vcpu);
 483         regs->srr0 = kvmppc_get_srr0(vcpu);
 484         regs->srr1 = kvmppc_get_srr1(vcpu);
 485         regs->pid = vcpu->arch.pid;
 486         regs->sprg0 = kvmppc_get_sprg0(vcpu);
 487         regs->sprg1 = kvmppc_get_sprg1(vcpu);
 488         regs->sprg2 = kvmppc_get_sprg2(vcpu);
 489         regs->sprg3 = kvmppc_get_sprg3(vcpu);
 490         regs->sprg4 = kvmppc_get_sprg4(vcpu);
 491         regs->sprg5 = kvmppc_get_sprg5(vcpu);
 492         regs->sprg6 = kvmppc_get_sprg6(vcpu);
 493         regs->sprg7 = kvmppc_get_sprg7(vcpu);
 494
 495         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 496                 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
 497
 498         return 0;
 499 }
 500
 501 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 502 {
 503         int i;
 504
 505         kvmppc_set_pc(vcpu, regs->pc);
 506         kvmppc_set_cr(vcpu, regs->cr);
 507         kvmppc_set_ctr(vcpu, regs->ctr);
 508         kvmppc_set_lr(vcpu, regs->lr);
 509         kvmppc_set_xer(vcpu, regs->xer);
 510         kvmppc_set_msr(vcpu, regs->msr);
 511         kvmppc_set_srr0(vcpu, regs->srr0);
 512         kvmppc_set_srr1(vcpu, regs->srr1);
 513         kvmppc_set_sprg0(vcpu, regs->sprg0);
 514         kvmppc_set_sprg1(vcpu, regs->sprg1);
 515         kvmppc_set_sprg2(vcpu, regs->sprg2);
 516         kvmppc_set_sprg3(vcpu, regs->sprg3);
 517         kvmppc_set_sprg4(vcpu, regs->sprg4);
 518         kvmppc_set_sprg5(vcpu, regs->sprg5);
 519         kvmppc_set_sprg6(vcpu, regs->sprg6);
 520         kvmppc_set_sprg7(vcpu, regs->sprg7);
 521
 522         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 523                 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
 524
 525         return 0;
 526 }
 527
 528 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 529 {
 530         return -ENOTSUPP;
 531 }
 532
 533 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 534 {
 535         return -ENOTSUPP;
 536 }
 537
 538 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 539 {
 540         int r;
 541         union kvmppc_one_reg val;
 542         int size;
 543         long int i;
 544
 545         size = one_reg_size(reg->id);
 546         if (size > sizeof(val))
 547                 return -EINVAL;
 548
 549         r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, reg->id, &val);
 550         if (r == -EINVAL) {
 551                 r = 0;
 552                 switch (reg->id) {
 553                 case KVM_REG_PPC_DAR:
 554                         val = get_reg_val(reg->id, kvmppc_get_dar(vcpu));
 555                         break;
 556                 case KVM_REG_PPC_DSISR:
 557                         val = get_reg_val(reg->id, kvmppc_get_dsisr(vcpu));
 558                         break;
 559                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
 560                         i = reg->id - KVM_REG_PPC_FPR0;
 561                         val = get_reg_val(reg->id, VCPU_FPR(vcpu, i));
 562                         break;
 563                 case KVM_REG_PPC_FPSCR:
 564                         val = get_reg_val(reg->id, vcpu->arch.fp.fpscr);
 565                         break;
 566 #ifdef CONFIG_ALTIVEC
 567                 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
 568                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 569                                 r = -ENXIO;
 570                                 break;
 571                         }
 572                         val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
 573                         break;
 574                 case KVM_REG_PPC_VSCR:
 575                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 576                                 r = -ENXIO;
 577                                 break;
 578                         }
 579                         val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
 580                         break;
 581                 case KVM_REG_PPC_VRSAVE:
 582                         val = get_reg_val(reg->id, vcpu->arch.vrsave);
 583                         break;
 584 #endif /* CONFIG_ALTIVEC */
 585 #ifdef CONFIG_VSX
 586                 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
 587                         if (cpu_has_feature(CPU_FTR_VSX)) {
 588                                 long int i = reg->id - KVM_REG_PPC_VSR0;
 589                                 val.vsxval[0] = vcpu->arch.fp.fpr[i][0];
 590                                 val.vsxval[1] = vcpu->arch.fp.fpr[i][1];
 591                         } else {
 592                                 r = -ENXIO;
 593                         }
 594                         break;
 595 #endif /* CONFIG_VSX */
 596                 case KVM_REG_PPC_DEBUG_INST: {
 597                         u32 opcode = INS_TW;
 598                         r = copy_to_user((u32 __user *)(long)reg->addr,
 599                                          &opcode, sizeof(u32));
 600                         break;
 601                 }
 602 #ifdef CONFIG_KVM_XICS
 603                 case KVM_REG_PPC_ICP_STATE:
 604                         if (!vcpu->arch.icp) {
 605                                 r = -ENXIO;
 606                                 break;
 607                         }
 608                         val = get_reg_val(reg->id, kvmppc_xics_get_icp(vcpu));
 609                         break;
 610 #endif /* CONFIG_KVM_XICS */
 611                 case KVM_REG_PPC_FSCR:
 612                         val = get_reg_val(reg->id, vcpu->arch.fscr);
 613                         break;
 614                 case KVM_REG_PPC_TAR:
 615                         val = get_reg_val(reg->id, vcpu->arch.tar);
 616                         break;
 617                 case KVM_REG_PPC_EBBHR:
 618                         val = get_reg_val(reg->id, vcpu->arch.ebbhr);
 619                         break;
 620                 case KVM_REG_PPC_EBBRR:
 621                         val = get_reg_val(reg->id, vcpu->arch.ebbrr);
 622                         break;
 623                 case KVM_REG_PPC_BESCR:
 624                         val = get_reg_val(reg->id, vcpu->arch.bescr);
 625                         break;
 626                 case KVM_REG_PPC_VTB:
 627                         val = get_reg_val(reg->id, vcpu->arch.vtb);
 628                         break;
 629                 case KVM_REG_PPC_IC:
 630                         val = get_reg_val(reg->id, vcpu->arch.ic);
 631                         break;
 632                 default:
 633                         r = -EINVAL;
 634                         break;
 635                 }
 636         }
 637         if (r)
 638                 return r;
 639
 640         if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
 641                 r = -EFAULT;
 642
 643         return r;
 644 }
 645
 646 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 647 {
 648         int r;
 649         union kvmppc_one_reg val;
 650         int size;
 651         long int i;
 652
 653         size = one_reg_size(reg->id);
 654         if (size > sizeof(val))
 655                 return -EINVAL;
 656
 657         if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
 658                 return -EFAULT;
 659
 660         r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, reg->id, &val);
 661         if (r == -EINVAL) {
 662                 r = 0;
 663                 switch (reg->id) {
 664                 case KVM_REG_PPC_DAR:
 665                         kvmppc_set_dar(vcpu, set_reg_val(reg->id, val));
 666                         break;
 667                 case KVM_REG_PPC_DSISR:
 668                         kvmppc_set_dsisr(vcpu, set_reg_val(reg->id, val));
 669                         break;
 670                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
 671                         i = reg->id - KVM_REG_PPC_FPR0;
 672                         VCPU_FPR(vcpu, i) = set_reg_val(reg->id, val);
 673                         break;
 674                 case KVM_REG_PPC_FPSCR:
 675                         vcpu->arch.fp.fpscr = set_reg_val(reg->id, val);
 676                         break;
 677 #ifdef CONFIG_ALTIVEC
 678                 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
 679                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 680                                 r = -ENXIO;
 681                                 break;
 682                         }
 683                         vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
 684                         break;
 685                 case KVM_REG_PPC_VSCR:
 686                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 687                                 r = -ENXIO;
 688                                 break;
 689                         }
 690                         vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
 691                         break;
 692                 case KVM_REG_PPC_VRSAVE:
 693                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 694                                 r = -ENXIO;
 695                                 break;
 696                         }
 697                         vcpu->arch.vrsave = set_reg_val(reg->id, val);
 698                         break;
 699 #endif /* CONFIG_ALTIVEC */
 700 #ifdef CONFIG_VSX
 701                 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
 702                         if (cpu_has_feature(CPU_FTR_VSX)) {
 703                                 long int i = reg->id - KVM_REG_PPC_VSR0;
 704                                 vcpu->arch.fp.fpr[i][0] = val.vsxval[0];
 705                                 vcpu->arch.fp.fpr[i][1] = val.vsxval[1];
 706                         } else {
 707                                 r = -ENXIO;
 708                         }
 709                         break;
 710 #endif /* CONFIG_VSX */
 711 #ifdef CONFIG_KVM_XICS
 712                 case KVM_REG_PPC_ICP_STATE:
 713                         if (!vcpu->arch.icp) {
 714                                 r = -ENXIO;
 715                                 break;
 716                         }
 717                         r = kvmppc_xics_set_icp(vcpu,
 718                                                 set_reg_val(reg->id, val));
 719                         break;
 720 #endif /* CONFIG_KVM_XICS */
 721                 case KVM_REG_PPC_FSCR:
 722                         vcpu->arch.fscr = set_reg_val(reg->id, val);
 723                         break;
 724                 case KVM_REG_PPC_TAR:
 725                         vcpu->arch.tar = set_reg_val(reg->id, val);
 726                         break;
 727                 case KVM_REG_PPC_EBBHR:
 728                         vcpu->arch.ebbhr = set_reg_val(reg->id, val);
 729                         break;
 730                 case KVM_REG_PPC_EBBRR:
 731                         vcpu->arch.ebbrr = set_reg_val(reg->id, val);
 732                         break;
 733                 case KVM_REG_PPC_BESCR:
 734                         vcpu->arch.bescr = set_reg_val(reg->id, val);
 735                         break;
 736                 case KVM_REG_PPC_VTB:
 737                         vcpu->arch.vtb = set_reg_val(reg->id, val);
 738                         break;
 739                 case KVM_REG_PPC_IC:
 740                         vcpu->arch.ic = set_reg_val(reg->id, val);
 741                         break;
 742                 default:
 743                         r = -EINVAL;
 744                         break;
 745                 }
 746         }
 747
 748         return r;
 749 }
 750
 751 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 752 {
 753         vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
 754 }
 755
 756 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
 757 {
 758         vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
 759 }
 760
 761 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
 762 {
 763         vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
 764 }
 765 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
 766
 767 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 768 {
 769         return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
 770 }
 771
 772 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
 773                                   struct kvm_translation *tr)
 774 {
 775         return 0;
 776 }
 777
 778 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 779                                         struct kvm_guest_debug *dbg)
 780 {
 781         return -EINVAL;
 782 }
 783
 784 void kvmppc_decrementer_func(unsigned long data)
 785 {
 786         struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
 787
 788         kvmppc_core_queue_dec(vcpu);
 789         kvm_vcpu_kick(vcpu);
 790 }
 791
 792 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
 793 {
 794         return kvm->arch.kvm_ops->vcpu_create(kvm, id);
 795 }
 796
 797 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
 798 {
 799         vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
 800 }
 801
 802 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
 803 {
 804         return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
 805 }
 806
 807 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
 808 {
 809         return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
 810 }
 811
 812 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
 813                               struct kvm_memory_slot *dont)
 814 {
 815         kvm->arch.kvm_ops->free_memslot(free, dont);
 816 }
 817
 818 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
 819                                unsigned long npages)
 820 {
 821         return kvm->arch.kvm_ops->create_memslot(slot, npages);
 822 }
 823
 824 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
 825 {
 826         kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
 827 }
 828
 829 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 830                                 struct kvm_memory_slot *memslot,
 831                                 struct kvm_userspace_memory_region *mem)
 832 {
 833         return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
 834 }
 835
 836 void kvmppc_core_commit_memory_region(struct kvm *kvm,
 837                                 struct kvm_userspace_memory_region *mem,
 838                                 const struct kvm_memory_slot *old)
 839 {
 840         kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old);
 841 }
 842
 843 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
 844 {
 845         return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
 846 }
 847 EXPORT_SYMBOL_GPL(kvm_unmap_hva);
 848
 849 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
 850 {
 851         return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
 852 }
 853
 854 int kvm_age_hva(struct kvm *kvm, unsigned long hva)
 855 {
 856         return kvm->arch.kvm_ops->age_hva(kvm, hva);
 857 }
 858
 859 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
 860 {
 861         return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
 862 }
 863
 864 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
 865 {
 866         kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
 867 }
 868
 869 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
 870 {
 871         vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
 872 }
 873
 874 int kvmppc_core_init_vm(struct kvm *kvm)
 875 {
 876
 877 #ifdef CONFIG_PPC64
 878         INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables);
 879         INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
 880 #endif
 881
 882         return kvm->arch.kvm_ops->init_vm(kvm);
 883 }
 884
 885 void kvmppc_core_destroy_vm(struct kvm *kvm)
 886 {
 887         kvm->arch.kvm_ops->destroy_vm(kvm);
 888
 889 #ifdef CONFIG_PPC64
 890         kvmppc_rtas_tokens_free(kvm);
 891         WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
 892 #endif
 893 }
 894
 895 int kvmppc_core_check_processor_compat(void)
 896 {
 897         /*
 898          * We always return 0 for book3s. We check
 899          * for compatability while loading the HV
 900          * or PR module
 901          */
 902         return 0;
 903 }
 904
 905 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
 906 {
 907         return kvm->arch.kvm_ops->hcall_implemented(hcall);
 908 }
 909
 910 static int kvmppc_book3s_init(void)
 911 {
 912         int r;
 913
 914         r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
 915         if (r)
 916                 return r;
 917 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 918         r = kvmppc_book3s_init_pr();
 919 #endif
 920         return r;
 921
 922 }
 923
 924 static void kvmppc_book3s_exit(void)
 925 {
 926 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 927         kvmppc_book3s_exit_pr();
 928 #endif
 929         kvm_exit();
 930 }
 931
 932 module_init(kvmppc_book3s_init);
 933 module_exit(kvmppc_book3s_exit);
 934
 935 /* On 32bit this is our one and only kernel module */
 936 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 937 MODULE_ALIAS_MISCDEV(KVM_MINOR);
 938 MODULE_ALIAS("devname:kvm");
 939 #endif