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