Pileus Git - ~andy/linux/blob - 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
  22 #include <asm/reg.h>
  23 #include <asm/cputable.h>
  24 #include <asm/cacheflush.h>
  25 #include <asm/tlbflush.h>
  26 #include <asm/uaccess.h>
  27 #include <asm/io.h>
  28 #include <asm/kvm_ppc.h>
  29 #include <asm/kvm_book3s.h>
  30 #include <asm/mmu_context.h>
  31 #include <asm/page.h>
  32 #include <linux/gfp.h>
  33 #include <linux/sched.h>
  34 #include <linux/vmalloc.h>
  35 #include <linux/highmem.h>
  36
  37 #include "book3s.h"
  38 #include "trace.h"
  39
  40 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
  41
  42 /* #define EXIT_DEBUG */
  43
  44 struct kvm_stats_debugfs_item debugfs_entries[] = {
  45         { "exits",       VCPU_STAT(sum_exits) },
  46         { "mmio",        VCPU_STAT(mmio_exits) },
  47         { "sig",         VCPU_STAT(signal_exits) },
  48         { "sysc",        VCPU_STAT(syscall_exits) },
  49         { "inst_emu",    VCPU_STAT(emulated_inst_exits) },
  50         { "dec",         VCPU_STAT(dec_exits) },
  51         { "ext_intr",    VCPU_STAT(ext_intr_exits) },
  52         { "queue_intr",  VCPU_STAT(queue_intr) },
  53         { "halt_wakeup", VCPU_STAT(halt_wakeup) },
  54         { "pf_storage",  VCPU_STAT(pf_storage) },
  55         { "sp_storage",  VCPU_STAT(sp_storage) },
  56         { "pf_instruc",  VCPU_STAT(pf_instruc) },
  57         { "sp_instruc",  VCPU_STAT(sp_instruc) },
  58         { "ld",          VCPU_STAT(ld) },
  59         { "ld_slow",     VCPU_STAT(ld_slow) },
  60         { "st",          VCPU_STAT(st) },
  61         { "st_slow",     VCPU_STAT(st_slow) },
  62         { NULL }
  63 };
  64
  65 void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
  66 {
  67 }
  68
  69 void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
  70 {
  71 }
  72
  73 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
  74 {
  75         if (!is_kvmppc_hv_enabled(vcpu->kvm))
  76                 return to_book3s(vcpu)->hior;
  77         return 0;
  78 }
  79
  80 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
  81                         unsigned long pending_now, unsigned long old_pending)
  82 {
  83         if (is_kvmppc_hv_enabled(vcpu->kvm))
  84                 return;
  85         if (pending_now)
  86                 vcpu->arch.shared->int_pending = 1;
  87         else if (old_pending)
  88                 vcpu->arch.shared->int_pending = 0;
  89 }
  90
  91 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
  92 {
  93         ulong crit_raw;
  94         ulong crit_r1;
  95         bool crit;
  96
  97         if (is_kvmppc_hv_enabled(vcpu->kvm))
  98                 return false;
  99
 100         crit_raw = vcpu->arch.shared->critical;
 101         crit_r1 = kvmppc_get_gpr(vcpu, 1);
 102
 103         /* Truncate crit indicators in 32 bit mode */
 104         if (!(vcpu->arch.shared->msr & MSR_SF)) {
 105                 crit_raw &= 0xffffffff;
 106                 crit_r1 &= 0xffffffff;
 107         }
 108
 109         /* Critical section when crit == r1 */
 110         crit = (crit_raw == crit_r1);
 111         /* ... and we're in supervisor mode */
 112         crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
 113
 114         return crit;
 115 }
 116
 117 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
 118 {
 119         vcpu->arch.shared->srr0 = kvmppc_get_pc(vcpu);
 120         vcpu->arch.shared->srr1 = vcpu->arch.shared->msr | flags;
 121         kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
 122         vcpu->arch.mmu.reset_msr(vcpu);
 123 }
 124
 125 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
 126 {
 127         unsigned int prio;
 128
 129         switch (vec) {
 130         case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET;         break;
 131         case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK;        break;
 132         case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE;         break;
 133         case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT;         break;
 134         case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE;         break;
 135         case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT;         break;
 136         case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL;             break;
 137         case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL;       break;
 138         case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT;            break;
 139         case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM;              break;
 140         case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL;           break;
 141         case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER;          break;
 142         case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL;              break;
 143         case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG;                break;
 144         case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC;              break;
 145         case 0xf40: prio = BOOK3S_IRQPRIO_VSX;                  break;
 146         default:    prio = BOOK3S_IRQPRIO_MAX;                  break;
 147         }
 148
 149         return prio;
 150 }
 151
 152 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
 153                                           unsigned int vec)
 154 {
 155         unsigned long old_pending = vcpu->arch.pending_exceptions;
 156
 157         clear_bit(kvmppc_book3s_vec2irqprio(vec),
 158                   &vcpu->arch.pending_exceptions);
 159
 160         kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
 161                                   old_pending);
 162 }
 163
 164 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
 165 {
 166         vcpu->stat.queue_intr++;
 167
 168         set_bit(kvmppc_book3s_vec2irqprio(vec),
 169                 &vcpu->arch.pending_exceptions);
 170 #ifdef EXIT_DEBUG
 171         printk(KERN_INFO "Queueing interrupt %x\n", vec);
 172 #endif
 173 }
 174 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
 175
 176 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
 177 {
 178         /* might as well deliver this straight away */
 179         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
 180 }
 181 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
 182
 183 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
 184 {
 185         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
 186 }
 187 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
 188
 189 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
 190 {
 191         return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
 192 }
 193 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
 194
 195 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
 196 {
 197         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
 198 }
 199 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
 200
 201 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 202                                 struct kvm_interrupt *irq)
 203 {
 204         unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
 205
 206         if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
 207                 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
 208
 209         kvmppc_book3s_queue_irqprio(vcpu, vec);
 210 }
 211
 212 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
 213 {
 214         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
 215         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
 216 }
 217
 218 int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
 219 {
 220         int deliver = 1;
 221         int vec = 0;
 222         bool crit = kvmppc_critical_section(vcpu);
 223
 224         switch (priority) {
 225         case BOOK3S_IRQPRIO_DECREMENTER:
 226                 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit;
 227                 vec = BOOK3S_INTERRUPT_DECREMENTER;
 228                 break;
 229         case BOOK3S_IRQPRIO_EXTERNAL:
 230         case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
 231                 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit;
 232                 vec = BOOK3S_INTERRUPT_EXTERNAL;
 233                 break;
 234         case BOOK3S_IRQPRIO_SYSTEM_RESET:
 235                 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
 236                 break;
 237         case BOOK3S_IRQPRIO_MACHINE_CHECK:
 238                 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
 239                 break;
 240         case BOOK3S_IRQPRIO_DATA_STORAGE:
 241                 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
 242                 break;
 243         case BOOK3S_IRQPRIO_INST_STORAGE:
 244                 vec = BOOK3S_INTERRUPT_INST_STORAGE;
 245                 break;
 246         case BOOK3S_IRQPRIO_DATA_SEGMENT:
 247                 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
 248                 break;
 249         case BOOK3S_IRQPRIO_INST_SEGMENT:
 250                 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
 251                 break;
 252         case BOOK3S_IRQPRIO_ALIGNMENT:
 253                 vec = BOOK3S_INTERRUPT_ALIGNMENT;
 254                 break;
 255         case BOOK3S_IRQPRIO_PROGRAM:
 256                 vec = BOOK3S_INTERRUPT_PROGRAM;
 257                 break;
 258         case BOOK3S_IRQPRIO_VSX:
 259                 vec = BOOK3S_INTERRUPT_VSX;
 260                 break;
 261         case BOOK3S_IRQPRIO_ALTIVEC:
 262                 vec = BOOK3S_INTERRUPT_ALTIVEC;
 263                 break;
 264         case BOOK3S_IRQPRIO_FP_UNAVAIL:
 265                 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
 266                 break;
 267         case BOOK3S_IRQPRIO_SYSCALL:
 268                 vec = BOOK3S_INTERRUPT_SYSCALL;
 269                 break;
 270         case BOOK3S_IRQPRIO_DEBUG:
 271                 vec = BOOK3S_INTERRUPT_TRACE;
 272                 break;
 273         case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
 274                 vec = BOOK3S_INTERRUPT_PERFMON;
 275                 break;
 276         default:
 277                 deliver = 0;
 278                 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
 279                 break;
 280         }
 281
 282 #if 0
 283         printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
 284 #endif
 285
 286         if (deliver)
 287                 kvmppc_inject_interrupt(vcpu, vec, 0);
 288
 289         return deliver;
 290 }
 291
 292 /*
 293  * This function determines if an irqprio should be cleared once issued.
 294  */
 295 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
 296 {
 297         switch (priority) {
 298                 case BOOK3S_IRQPRIO_DECREMENTER:
 299                         /* DEC interrupts get cleared by mtdec */
 300                         return false;
 301                 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
 302                         /* External interrupts get cleared by userspace */
 303                         return false;
 304         }
 305
 306         return true;
 307 }
 308
 309 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
 310 {
 311         unsigned long *pending = &vcpu->arch.pending_exceptions;
 312         unsigned long old_pending = vcpu->arch.pending_exceptions;
 313         unsigned int priority;
 314
 315 #ifdef EXIT_DEBUG
 316         if (vcpu->arch.pending_exceptions)
 317                 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
 318 #endif
 319         priority = __ffs(*pending);
 320         while (priority < BOOK3S_IRQPRIO_MAX) {
 321                 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
 322                     clear_irqprio(vcpu, priority)) {
 323                         clear_bit(priority, &vcpu->arch.pending_exceptions);
 324                         break;
 325                 }
 326
 327                 priority = find_next_bit(pending,
 328                                          BITS_PER_BYTE * sizeof(*pending),
 329                                          priority + 1);
 330         }
 331
 332         /* Tell the guest about our interrupt status */
 333         kvmppc_update_int_pending(vcpu, *pending, old_pending);
 334
 335         return 0;
 336 }
 337 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
 338
 339 pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing,
 340                         bool *writable)
 341 {
 342         ulong mp_pa = vcpu->arch.magic_page_pa;
 343
 344         if (!(vcpu->arch.shared->msr & MSR_SF))
 345                 mp_pa = (uint32_t)mp_pa;
 346
 347         /* Magic page override */
 348         if (unlikely(mp_pa) &&
 349             unlikely(((gfn << PAGE_SHIFT) & KVM_PAM) ==
 350                      ((mp_pa & PAGE_MASK) & KVM_PAM))) {
 351                 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
 352                 pfn_t pfn;
 353
 354                 pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
 355                 get_page(pfn_to_page(pfn));
 356                 if (writable)
 357                         *writable = true;
 358                 return pfn;
 359         }
 360
 361         return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
 362 }
 363 EXPORT_SYMBOL_GPL(kvmppc_gfn_to_pfn);
 364
 365 static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
 366                         bool iswrite, struct kvmppc_pte *pte)
 367 {
 368         int relocated = (vcpu->arch.shared->msr & (data ? MSR_DR : MSR_IR));
 369         int r;
 370
 371         if (relocated) {
 372                 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
 373         } else {
 374                 pte->eaddr = eaddr;
 375                 pte->raddr = eaddr & KVM_PAM;
 376                 pte->vpage = VSID_REAL | eaddr >> 12;
 377                 pte->may_read = true;
 378                 pte->may_write = true;
 379                 pte->may_execute = true;
 380                 r = 0;
 381         }
 382
 383         return r;
 384 }
 385
 386 static hva_t kvmppc_bad_hva(void)
 387 {
 388         return PAGE_OFFSET;
 389 }
 390
 391 static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
 392                                bool read)
 393 {
 394         hva_t hpage;
 395
 396         if (read && !pte->may_read)
 397                 goto err;
 398
 399         if (!read && !pte->may_write)
 400                 goto err;
 401
 402         hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
 403         if (kvm_is_error_hva(hpage))
 404                 goto err;
 405
 406         return hpage | (pte->raddr & ~PAGE_MASK);
 407 err:
 408         return kvmppc_bad_hva();
 409 }
 410
 411 int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
 412               bool data)
 413 {
 414         struct kvmppc_pte pte;
 415
 416         vcpu->stat.st++;
 417
 418         if (kvmppc_xlate(vcpu, *eaddr, data, true, &pte))
 419                 return -ENOENT;
 420
 421         *eaddr = pte.raddr;
 422
 423         if (!pte.may_write)
 424                 return -EPERM;
 425
 426         if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
 427                 return EMULATE_DO_MMIO;
 428
 429         return EMULATE_DONE;
 430 }
 431 EXPORT_SYMBOL_GPL(kvmppc_st);
 432
 433 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
 434                       bool data)
 435 {
 436         struct kvmppc_pte pte;
 437         hva_t hva = *eaddr;
 438
 439         vcpu->stat.ld++;
 440
 441         if (kvmppc_xlate(vcpu, *eaddr, data, false, &pte))
 442                 goto nopte;
 443
 444         *eaddr = pte.raddr;
 445
 446         hva = kvmppc_pte_to_hva(vcpu, &pte, true);
 447         if (kvm_is_error_hva(hva))
 448                 goto mmio;
 449
 450         if (copy_from_user(ptr, (void __user *)hva, size)) {
 451                 printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva);
 452                 goto mmio;
 453         }
 454
 455         return EMULATE_DONE;
 456
 457 nopte:
 458         return -ENOENT;
 459 mmio:
 460         return EMULATE_DO_MMIO;
 461 }
 462 EXPORT_SYMBOL_GPL(kvmppc_ld);
 463
 464 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 465 {
 466         return 0;
 467 }
 468
 469 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
 470 {
 471         return 0;
 472 }
 473
 474 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
 475 {
 476 }
 477
 478 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
 479                                   struct kvm_sregs *sregs)
 480 {
 481         return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
 482 }
 483
 484 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
 485                                   struct kvm_sregs *sregs)
 486 {
 487         return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
 488 }
 489
 490 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 491 {
 492         int i;
 493
 494         regs->pc = kvmppc_get_pc(vcpu);
 495         regs->cr = kvmppc_get_cr(vcpu);
 496         regs->ctr = kvmppc_get_ctr(vcpu);
 497         regs->lr = kvmppc_get_lr(vcpu);
 498         regs->xer = kvmppc_get_xer(vcpu);
 499         regs->msr = vcpu->arch.shared->msr;
 500         regs->srr0 = vcpu->arch.shared->srr0;
 501         regs->srr1 = vcpu->arch.shared->srr1;
 502         regs->pid = vcpu->arch.pid;
 503         regs->sprg0 = vcpu->arch.shared->sprg0;
 504         regs->sprg1 = vcpu->arch.shared->sprg1;
 505         regs->sprg2 = vcpu->arch.shared->sprg2;
 506         regs->sprg3 = vcpu->arch.shared->sprg3;
 507         regs->sprg4 = vcpu->arch.shared->sprg4;
 508         regs->sprg5 = vcpu->arch.shared->sprg5;
 509         regs->sprg6 = vcpu->arch.shared->sprg6;
 510         regs->sprg7 = vcpu->arch.shared->sprg7;
 511
 512         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 513                 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
 514
 515         return 0;
 516 }
 517
 518 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 519 {
 520         int i;
 521
 522         kvmppc_set_pc(vcpu, regs->pc);
 523         kvmppc_set_cr(vcpu, regs->cr);
 524         kvmppc_set_ctr(vcpu, regs->ctr);
 525         kvmppc_set_lr(vcpu, regs->lr);
 526         kvmppc_set_xer(vcpu, regs->xer);
 527         kvmppc_set_msr(vcpu, regs->msr);
 528         vcpu->arch.shared->srr0 = regs->srr0;
 529         vcpu->arch.shared->srr1 = regs->srr1;
 530         vcpu->arch.shared->sprg0 = regs->sprg0;
 531         vcpu->arch.shared->sprg1 = regs->sprg1;
 532         vcpu->arch.shared->sprg2 = regs->sprg2;
 533         vcpu->arch.shared->sprg3 = regs->sprg3;
 534         vcpu->arch.shared->sprg4 = regs->sprg4;
 535         vcpu->arch.shared->sprg5 = regs->sprg5;
 536         vcpu->arch.shared->sprg6 = regs->sprg6;
 537         vcpu->arch.shared->sprg7 = regs->sprg7;
 538
 539         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 540                 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
 541
 542         return 0;
 543 }
 544
 545 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 546 {
 547         return -ENOTSUPP;
 548 }
 549
 550 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
 551 {
 552         return -ENOTSUPP;
 553 }
 554
 555 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 556 {
 557         int r;
 558         union kvmppc_one_reg val;
 559         int size;
 560         long int i;
 561
 562         size = one_reg_size(reg->id);
 563         if (size > sizeof(val))
 564                 return -EINVAL;
 565
 566         r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, reg->id, &val);
 567         if (r == -EINVAL) {
 568                 r = 0;
 569                 switch (reg->id) {
 570                 case KVM_REG_PPC_DAR:
 571                         val = get_reg_val(reg->id, vcpu->arch.shared->dar);
 572                         break;
 573                 case KVM_REG_PPC_DSISR:
 574                         val = get_reg_val(reg->id, vcpu->arch.shared->dsisr);
 575                         break;
 576                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
 577                         i = reg->id - KVM_REG_PPC_FPR0;
 578                         val = get_reg_val(reg->id, vcpu->arch.fpr[i]);
 579                         break;
 580                 case KVM_REG_PPC_FPSCR:
 581                         val = get_reg_val(reg->id, vcpu->arch.fpscr);
 582                         break;
 583 #ifdef CONFIG_ALTIVEC
 584                 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
 585                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 586                                 r = -ENXIO;
 587                                 break;
 588                         }
 589                         val.vval = vcpu->arch.vr[reg->id - KVM_REG_PPC_VR0];
 590                         break;
 591                 case KVM_REG_PPC_VSCR:
 592                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 593                                 r = -ENXIO;
 594                                 break;
 595                         }
 596                         val = get_reg_val(reg->id, vcpu->arch.vscr.u[3]);
 597                         break;
 598                 case KVM_REG_PPC_VRSAVE:
 599                         val = get_reg_val(reg->id, vcpu->arch.vrsave);
 600                         break;
 601 #endif /* CONFIG_ALTIVEC */
 602                 case KVM_REG_PPC_DEBUG_INST: {
 603                         u32 opcode = INS_TW;
 604                         r = copy_to_user((u32 __user *)(long)reg->addr,
 605                                          &opcode, sizeof(u32));
 606                         break;
 607                 }
 608 #ifdef CONFIG_KVM_XICS
 609                 case KVM_REG_PPC_ICP_STATE:
 610                         if (!vcpu->arch.icp) {
 611                                 r = -ENXIO;
 612                                 break;
 613                         }
 614                         val = get_reg_val(reg->id, kvmppc_xics_get_icp(vcpu));
 615                         break;
 616 #endif /* CONFIG_KVM_XICS */
 617                 default:
 618                         r = -EINVAL;
 619                         break;
 620                 }
 621         }
 622         if (r)
 623                 return r;
 624
 625         if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
 626                 r = -EFAULT;
 627
 628         return r;
 629 }
 630
 631 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 632 {
 633         int r;
 634         union kvmppc_one_reg val;
 635         int size;
 636         long int i;
 637
 638         size = one_reg_size(reg->id);
 639         if (size > sizeof(val))
 640                 return -EINVAL;
 641
 642         if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
 643                 return -EFAULT;
 644
 645         r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, reg->id, &val);
 646         if (r == -EINVAL) {
 647                 r = 0;
 648                 switch (reg->id) {
 649                 case KVM_REG_PPC_DAR:
 650                         vcpu->arch.shared->dar = set_reg_val(reg->id, val);
 651                         break;
 652                 case KVM_REG_PPC_DSISR:
 653                         vcpu->arch.shared->dsisr = set_reg_val(reg->id, val);
 654                         break;
 655                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
 656                         i = reg->id - KVM_REG_PPC_FPR0;
 657                         vcpu->arch.fpr[i] = set_reg_val(reg->id, val);
 658                         break;
 659                 case KVM_REG_PPC_FPSCR:
 660                         vcpu->arch.fpscr = set_reg_val(reg->id, val);
 661                         break;
 662 #ifdef CONFIG_ALTIVEC
 663                 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
 664                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 665                                 r = -ENXIO;
 666                                 break;
 667                         }
 668                         vcpu->arch.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
 669                         break;
 670                 case KVM_REG_PPC_VSCR:
 671                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 672                                 r = -ENXIO;
 673                                 break;
 674                         }
 675                         vcpu->arch.vscr.u[3] = set_reg_val(reg->id, val);
 676                         break;
 677                 case KVM_REG_PPC_VRSAVE:
 678                         if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
 679                                 r = -ENXIO;
 680                                 break;
 681                         }
 682                         vcpu->arch.vrsave = set_reg_val(reg->id, val);
 683                         break;
 684 #endif /* CONFIG_ALTIVEC */
 685 #ifdef CONFIG_KVM_XICS
 686                 case KVM_REG_PPC_ICP_STATE:
 687                         if (!vcpu->arch.icp) {
 688                                 r = -ENXIO;
 689                                 break;
 690                         }
 691                         r = kvmppc_xics_set_icp(vcpu,
 692                                                 set_reg_val(reg->id, val));
 693                         break;
 694 #endif /* CONFIG_KVM_XICS */
 695                 default:
 696                         r = -EINVAL;
 697                         break;
 698                 }
 699         }
 700
 701         return r;
 702 }
 703
 704 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 705 {
 706         vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
 707 }
 708
 709 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
 710 {
 711         vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
 712 }
 713
 714 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
 715 {
 716         vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
 717 }
 718 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
 719
 720 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 721 {
 722         return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
 723 }
 724
 725 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
 726                                   struct kvm_translation *tr)
 727 {
 728         return 0;
 729 }
 730
 731 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 732                                         struct kvm_guest_debug *dbg)
 733 {
 734         return -EINVAL;
 735 }
 736
 737 void kvmppc_decrementer_func(unsigned long data)
 738 {
 739         struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
 740
 741         kvmppc_core_queue_dec(vcpu);
 742         kvm_vcpu_kick(vcpu);
 743 }
 744
 745 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
 746 {
 747         return kvm->arch.kvm_ops->vcpu_create(kvm, id);
 748 }
 749
 750 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
 751 {
 752         vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
 753 }
 754
 755 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
 756 {
 757         return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
 758 }
 759
 760 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
 761 {
 762         return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
 763 }
 764
 765 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
 766                               struct kvm_memory_slot *dont)
 767 {
 768         kvm->arch.kvm_ops->free_memslot(free, dont);
 769 }
 770
 771 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
 772                                unsigned long npages)
 773 {
 774         return kvm->arch.kvm_ops->create_memslot(slot, npages);
 775 }
 776
 777 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
 778 {
 779         kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
 780 }
 781
 782 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 783                                 struct kvm_memory_slot *memslot,
 784                                 struct kvm_userspace_memory_region *mem)
 785 {
 786         return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
 787 }
 788
 789 void kvmppc_core_commit_memory_region(struct kvm *kvm,
 790                                 struct kvm_userspace_memory_region *mem,
 791                                 const struct kvm_memory_slot *old)
 792 {
 793         kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old);
 794 }
 795
 796 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
 797 {
 798         return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
 799 }
 800 EXPORT_SYMBOL_GPL(kvm_unmap_hva);
 801
 802 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
 803 {
 804         return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
 805 }
 806
 807 int kvm_age_hva(struct kvm *kvm, unsigned long hva)
 808 {
 809         return kvm->arch.kvm_ops->age_hva(kvm, hva);
 810 }
 811
 812 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
 813 {
 814         return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
 815 }
 816
 817 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
 818 {
 819         kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
 820 }
 821
 822 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
 823 {
 824         vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
 825 }
 826
 827 int kvmppc_core_init_vm(struct kvm *kvm)
 828 {
 829
 830 #ifdef CONFIG_PPC64
 831         INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables);
 832         INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
 833 #endif
 834
 835         return kvm->arch.kvm_ops->init_vm(kvm);
 836 }
 837
 838 void kvmppc_core_destroy_vm(struct kvm *kvm)
 839 {
 840         kvm->arch.kvm_ops->destroy_vm(kvm);
 841
 842 #ifdef CONFIG_PPC64
 843         kvmppc_rtas_tokens_free(kvm);
 844         WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
 845 #endif
 846 }
 847
 848 int kvmppc_core_check_processor_compat(void)
 849 {
 850         /*
 851          * We always return 0 for book3s. We check
 852          * for compatability while loading the HV
 853          * or PR module
 854          */
 855         return 0;
 856 }
 857
 858 static int kvmppc_book3s_init(void)
 859 {
 860         int r;
 861
 862         r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
 863         if (r)
 864                 return r;
 865 #ifdef CONFIG_KVM_BOOK3S_32
 866         r = kvmppc_book3s_init_pr();
 867 #endif
 868         return r;
 869
 870 }
 871
 872 static void kvmppc_book3s_exit(void)
 873 {
 874 #ifdef CONFIG_KVM_BOOK3S_32
 875         kvmppc_book3s_exit_pr();
 876 #endif
 877         kvm_exit();
 878 }
 879
 880 module_init(kvmppc_book3s_init);
 881 module_exit(kvmppc_book3s_exit);