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 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 76 { 77 if (!is_kvmppc_hv_enabled(vcpu->kvm)) 78 return to_book3s(vcpu)->hior; 79 return 0; 80 } 81 82 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 83 unsigned long pending_now, unsigned long old_pending) 84 { 85 if (is_kvmppc_hv_enabled(vcpu->kvm)) 86 return; 87 if (pending_now) 88 vcpu->arch.shared->int_pending = 1; 89 else if (old_pending) 90 vcpu->arch.shared->int_pending = 0; 91 } 92 93 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 94 { 95 ulong crit_raw; 96 ulong crit_r1; 97 bool crit; 98 99 if (is_kvmppc_hv_enabled(vcpu->kvm)) 100 return false; 101 102 crit_raw = vcpu->arch.shared->critical; 103 crit_r1 = kvmppc_get_gpr(vcpu, 1); 104 105 /* Truncate crit indicators in 32 bit mode */ 106 if (!(vcpu->arch.shared->msr & MSR_SF)) { 107 crit_raw &= 0xffffffff; 108 crit_r1 &= 0xffffffff; 109 } 110 111 /* Critical section when crit == r1 */ 112 crit = (crit_raw == crit_r1); 113 /* ... and we're in supervisor mode */ 114 crit = crit && !(vcpu->arch.shared->msr & MSR_PR); 115 116 return crit; 117 } 118 119 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags) 120 { 121 vcpu->arch.shared->srr0 = kvmppc_get_pc(vcpu); 122 vcpu->arch.shared->srr1 = vcpu->arch.shared->msr | flags; 123 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec); 124 vcpu->arch.mmu.reset_msr(vcpu); 125 } 126 127 static int kvmppc_book3s_vec2irqprio(unsigned int vec) 128 { 129 unsigned int prio; 130 131 switch (vec) { 132 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break; 133 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break; 134 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break; 135 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break; 136 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break; 137 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break; 138 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break; 139 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break; 140 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break; 141 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break; 142 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break; 143 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break; 144 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break; 145 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break; 146 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break; 147 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break; 148 default: prio = BOOK3S_IRQPRIO_MAX; break; 149 } 150 151 return prio; 152 } 153 154 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, 155 unsigned int vec) 156 { 157 unsigned long old_pending = vcpu->arch.pending_exceptions; 158 159 clear_bit(kvmppc_book3s_vec2irqprio(vec), 160 &vcpu->arch.pending_exceptions); 161 162 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions, 163 old_pending); 164 } 165 166 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec) 167 { 168 vcpu->stat.queue_intr++; 169 170 set_bit(kvmppc_book3s_vec2irqprio(vec), 171 &vcpu->arch.pending_exceptions); 172 #ifdef EXIT_DEBUG 173 printk(KERN_INFO "Queueing interrupt %x\n", vec); 174 #endif 175 } 176 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio); 177 178 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags) 179 { 180 /* might as well deliver this straight away */ 181 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags); 182 } 183 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program); 184 185 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu) 186 { 187 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); 188 } 189 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec); 190 191 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) 192 { 193 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); 194 } 195 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec); 196 197 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) 198 { 199 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); 200 } 201 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec); 202 203 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 204 struct kvm_interrupt *irq) 205 { 206 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL; 207 208 if (irq->irq == KVM_INTERRUPT_SET_LEVEL) 209 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL; 210 211 kvmppc_book3s_queue_irqprio(vcpu, vec); 212 } 213 214 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu) 215 { 216 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); 217 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL); 218 } 219 220 int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) 221 { 222 int deliver = 1; 223 int vec = 0; 224 bool crit = kvmppc_critical_section(vcpu); 225 226 switch (priority) { 227 case BOOK3S_IRQPRIO_DECREMENTER: 228 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit; 229 vec = BOOK3S_INTERRUPT_DECREMENTER; 230 break; 231 case BOOK3S_IRQPRIO_EXTERNAL: 232 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: 233 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit; 234 vec = BOOK3S_INTERRUPT_EXTERNAL; 235 break; 236 case BOOK3S_IRQPRIO_SYSTEM_RESET: 237 vec = BOOK3S_INTERRUPT_SYSTEM_RESET; 238 break; 239 case BOOK3S_IRQPRIO_MACHINE_CHECK: 240 vec = BOOK3S_INTERRUPT_MACHINE_CHECK; 241 break; 242 case BOOK3S_IRQPRIO_DATA_STORAGE: 243 vec = BOOK3S_INTERRUPT_DATA_STORAGE; 244 break; 245 case BOOK3S_IRQPRIO_INST_STORAGE: 246 vec = BOOK3S_INTERRUPT_INST_STORAGE; 247 break; 248 case BOOK3S_IRQPRIO_DATA_SEGMENT: 249 vec = BOOK3S_INTERRUPT_DATA_SEGMENT; 250 break; 251 case BOOK3S_IRQPRIO_INST_SEGMENT: 252 vec = BOOK3S_INTERRUPT_INST_SEGMENT; 253 break; 254 case BOOK3S_IRQPRIO_ALIGNMENT: 255 vec = BOOK3S_INTERRUPT_ALIGNMENT; 256 break; 257 case BOOK3S_IRQPRIO_PROGRAM: 258 vec = BOOK3S_INTERRUPT_PROGRAM; 259 break; 260 case BOOK3S_IRQPRIO_VSX: 261 vec = BOOK3S_INTERRUPT_VSX; 262 break; 263 case BOOK3S_IRQPRIO_ALTIVEC: 264 vec = BOOK3S_INTERRUPT_ALTIVEC; 265 break; 266 case BOOK3S_IRQPRIO_FP_UNAVAIL: 267 vec = BOOK3S_INTERRUPT_FP_UNAVAIL; 268 break; 269 case BOOK3S_IRQPRIO_SYSCALL: 270 vec = BOOK3S_INTERRUPT_SYSCALL; 271 break; 272 case BOOK3S_IRQPRIO_DEBUG: 273 vec = BOOK3S_INTERRUPT_TRACE; 274 break; 275 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR: 276 vec = BOOK3S_INTERRUPT_PERFMON; 277 break; 278 default: 279 deliver = 0; 280 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority); 281 break; 282 } 283 284 #if 0 285 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver); 286 #endif 287 288 if (deliver) 289 kvmppc_inject_interrupt(vcpu, vec, 0); 290 291 return deliver; 292 } 293 294 /* 295 * This function determines if an irqprio should be cleared once issued. 296 */ 297 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority) 298 { 299 switch (priority) { 300 case BOOK3S_IRQPRIO_DECREMENTER: 301 /* DEC interrupts get cleared by mtdec */ 302 return false; 303 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: 304 /* External interrupts get cleared by userspace */ 305 return false; 306 } 307 308 return true; 309 } 310 311 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu) 312 { 313 unsigned long *pending = &vcpu->arch.pending_exceptions; 314 unsigned long old_pending = vcpu->arch.pending_exceptions; 315 unsigned int priority; 316 317 #ifdef EXIT_DEBUG 318 if (vcpu->arch.pending_exceptions) 319 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions); 320 #endif 321 priority = __ffs(*pending); 322 while (priority < BOOK3S_IRQPRIO_MAX) { 323 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && 324 clear_irqprio(vcpu, priority)) { 325 clear_bit(priority, &vcpu->arch.pending_exceptions); 326 break; 327 } 328 329 priority = find_next_bit(pending, 330 BITS_PER_BYTE * sizeof(*pending), 331 priority + 1); 332 } 333 334 /* Tell the guest about our interrupt status */ 335 kvmppc_update_int_pending(vcpu, *pending, old_pending); 336 337 return 0; 338 } 339 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter); 340 341 pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing, 342 bool *writable) 343 { 344 ulong mp_pa = vcpu->arch.magic_page_pa; 345 346 if (!(vcpu->arch.shared->msr & MSR_SF)) 347 mp_pa = (uint32_t)mp_pa; 348 349 /* Magic page override */ 350 if (unlikely(mp_pa) && 351 unlikely(((gfn << PAGE_SHIFT) & KVM_PAM) == 352 ((mp_pa & PAGE_MASK) & KVM_PAM))) { 353 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; 354 pfn_t pfn; 355 356 pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT; 357 get_page(pfn_to_page(pfn)); 358 if (writable) 359 *writable = true; 360 return pfn; 361 } 362 363 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable); 364 } 365 EXPORT_SYMBOL_GPL(kvmppc_gfn_to_pfn); 366 367 static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data, 368 bool iswrite, struct kvmppc_pte *pte) 369 { 370 int relocated = (vcpu->arch.shared->msr & (data ? MSR_DR : MSR_IR)); 371 int r; 372 373 if (relocated) { 374 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite); 375 } else { 376 pte->eaddr = eaddr; 377 pte->raddr = eaddr & KVM_PAM; 378 pte->vpage = VSID_REAL | eaddr >> 12; 379 pte->may_read = true; 380 pte->may_write = true; 381 pte->may_execute = true; 382 r = 0; 383 } 384 385 return r; 386 } 387 388 static hva_t kvmppc_bad_hva(void) 389 { 390 return PAGE_OFFSET; 391 } 392 393 static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte, 394 bool read) 395 { 396 hva_t hpage; 397 398 if (read && !pte->may_read) 399 goto err; 400 401 if (!read && !pte->may_write) 402 goto err; 403 404 hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT); 405 if (kvm_is_error_hva(hpage)) 406 goto err; 407 408 return hpage | (pte->raddr & ~PAGE_MASK); 409 err: 410 return kvmppc_bad_hva(); 411 } 412 413 int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 414 bool data) 415 { 416 struct kvmppc_pte pte; 417 418 vcpu->stat.st++; 419 420 if (kvmppc_xlate(vcpu, *eaddr, data, true, &pte)) 421 return -ENOENT; 422 423 *eaddr = pte.raddr; 424 425 if (!pte.may_write) 426 return -EPERM; 427 428 if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size)) 429 return EMULATE_DO_MMIO; 430 431 return EMULATE_DONE; 432 } 433 EXPORT_SYMBOL_GPL(kvmppc_st); 434 435 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, 436 bool data) 437 { 438 struct kvmppc_pte pte; 439 hva_t hva = *eaddr; 440 441 vcpu->stat.ld++; 442 443 if (kvmppc_xlate(vcpu, *eaddr, data, false, &pte)) 444 goto nopte; 445 446 *eaddr = pte.raddr; 447 448 hva = kvmppc_pte_to_hva(vcpu, &pte, true); 449 if (kvm_is_error_hva(hva)) 450 goto mmio; 451 452 if (copy_from_user(ptr, (void __user *)hva, size)) { 453 printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva); 454 goto mmio; 455 } 456 457 return EMULATE_DONE; 458 459 nopte: 460 return -ENOENT; 461 mmio: 462 return EMULATE_DO_MMIO; 463 } 464 EXPORT_SYMBOL_GPL(kvmppc_ld); 465 466 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) 467 { 468 return 0; 469 } 470 471 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu) 472 { 473 return 0; 474 } 475 476 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu) 477 { 478 } 479 480 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 481 struct kvm_sregs *sregs) 482 { 483 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); 484 } 485 486 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 487 struct kvm_sregs *sregs) 488 { 489 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); 490 } 491 492 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 493 { 494 int i; 495 496 regs->pc = kvmppc_get_pc(vcpu); 497 regs->cr = kvmppc_get_cr(vcpu); 498 regs->ctr = kvmppc_get_ctr(vcpu); 499 regs->lr = kvmppc_get_lr(vcpu); 500 regs->xer = kvmppc_get_xer(vcpu); 501 regs->msr = vcpu->arch.shared->msr; 502 regs->srr0 = vcpu->arch.shared->srr0; 503 regs->srr1 = vcpu->arch.shared->srr1; 504 regs->pid = vcpu->arch.pid; 505 regs->sprg0 = vcpu->arch.shared->sprg0; 506 regs->sprg1 = vcpu->arch.shared->sprg1; 507 regs->sprg2 = vcpu->arch.shared->sprg2; 508 regs->sprg3 = vcpu->arch.shared->sprg3; 509 regs->sprg4 = vcpu->arch.shared->sprg4; 510 regs->sprg5 = vcpu->arch.shared->sprg5; 511 regs->sprg6 = vcpu->arch.shared->sprg6; 512 regs->sprg7 = vcpu->arch.shared->sprg7; 513 514 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) 515 regs->gpr[i] = kvmppc_get_gpr(vcpu, i); 516 517 return 0; 518 } 519 520 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 521 { 522 int i; 523 524 kvmppc_set_pc(vcpu, regs->pc); 525 kvmppc_set_cr(vcpu, regs->cr); 526 kvmppc_set_ctr(vcpu, regs->ctr); 527 kvmppc_set_lr(vcpu, regs->lr); 528 kvmppc_set_xer(vcpu, regs->xer); 529 kvmppc_set_msr(vcpu, regs->msr); 530 vcpu->arch.shared->srr0 = regs->srr0; 531 vcpu->arch.shared->srr1 = regs->srr1; 532 vcpu->arch.shared->sprg0 = regs->sprg0; 533 vcpu->arch.shared->sprg1 = regs->sprg1; 534 vcpu->arch.shared->sprg2 = regs->sprg2; 535 vcpu->arch.shared->sprg3 = regs->sprg3; 536 vcpu->arch.shared->sprg4 = regs->sprg4; 537 vcpu->arch.shared->sprg5 = regs->sprg5; 538 vcpu->arch.shared->sprg6 = regs->sprg6; 539 vcpu->arch.shared->sprg7 = regs->sprg7; 540 541 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) 542 kvmppc_set_gpr(vcpu, i, regs->gpr[i]); 543 544 return 0; 545 } 546 547 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 548 { 549 return -ENOTSUPP; 550 } 551 552 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 553 { 554 return -ENOTSUPP; 555 } 556 557 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) 558 { 559 int r; 560 union kvmppc_one_reg val; 561 int size; 562 long int i; 563 564 size = one_reg_size(reg->id); 565 if (size > sizeof(val)) 566 return -EINVAL; 567 568 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, reg->id, &val); 569 if (r == -EINVAL) { 570 r = 0; 571 switch (reg->id) { 572 case KVM_REG_PPC_DAR: 573 val = get_reg_val(reg->id, vcpu->arch.shared->dar); 574 break; 575 case KVM_REG_PPC_DSISR: 576 val = get_reg_val(reg->id, vcpu->arch.shared->dsisr); 577 break; 578 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: 579 i = reg->id - KVM_REG_PPC_FPR0; 580 val = get_reg_val(reg->id, VCPU_FPR(vcpu, i)); 581 break; 582 case KVM_REG_PPC_FPSCR: 583 val = get_reg_val(reg->id, vcpu->arch.fp.fpscr); 584 break; 585 #ifdef CONFIG_ALTIVEC 586 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31: 587 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { 588 r = -ENXIO; 589 break; 590 } 591 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0]; 592 break; 593 case KVM_REG_PPC_VSCR: 594 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { 595 r = -ENXIO; 596 break; 597 } 598 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]); 599 break; 600 case KVM_REG_PPC_VRSAVE: 601 val = get_reg_val(reg->id, vcpu->arch.vrsave); 602 break; 603 #endif /* CONFIG_ALTIVEC */ 604 #ifdef CONFIG_VSX 605 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: 606 if (cpu_has_feature(CPU_FTR_VSX)) { 607 long int i = reg->id - KVM_REG_PPC_VSR0; 608 val.vsxval[0] = vcpu->arch.fp.fpr[i][0]; 609 val.vsxval[1] = vcpu->arch.fp.fpr[i][1]; 610 } else { 611 r = -ENXIO; 612 } 613 break; 614 #endif /* CONFIG_VSX */ 615 case KVM_REG_PPC_DEBUG_INST: { 616 u32 opcode = INS_TW; 617 r = copy_to_user((u32 __user *)(long)reg->addr, 618 &opcode, sizeof(u32)); 619 break; 620 } 621 #ifdef CONFIG_KVM_XICS 622 case KVM_REG_PPC_ICP_STATE: 623 if (!vcpu->arch.icp) { 624 r = -ENXIO; 625 break; 626 } 627 val = get_reg_val(reg->id, kvmppc_xics_get_icp(vcpu)); 628 break; 629 #endif /* CONFIG_KVM_XICS */ 630 default: 631 r = -EINVAL; 632 break; 633 } 634 } 635 if (r) 636 return r; 637 638 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size)) 639 r = -EFAULT; 640 641 return r; 642 } 643 644 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) 645 { 646 int r; 647 union kvmppc_one_reg val; 648 int size; 649 long int i; 650 651 size = one_reg_size(reg->id); 652 if (size > sizeof(val)) 653 return -EINVAL; 654 655 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size)) 656 return -EFAULT; 657 658 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, reg->id, &val); 659 if (r == -EINVAL) { 660 r = 0; 661 switch (reg->id) { 662 case KVM_REG_PPC_DAR: 663 vcpu->arch.shared->dar = set_reg_val(reg->id, val); 664 break; 665 case KVM_REG_PPC_DSISR: 666 vcpu->arch.shared->dsisr = set_reg_val(reg->id, val); 667 break; 668 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: 669 i = reg->id - KVM_REG_PPC_FPR0; 670 VCPU_FPR(vcpu, i) = set_reg_val(reg->id, val); 671 break; 672 case KVM_REG_PPC_FPSCR: 673 vcpu->arch.fp.fpscr = set_reg_val(reg->id, val); 674 break; 675 #ifdef CONFIG_ALTIVEC 676 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31: 677 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { 678 r = -ENXIO; 679 break; 680 } 681 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval; 682 break; 683 case KVM_REG_PPC_VSCR: 684 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { 685 r = -ENXIO; 686 break; 687 } 688 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val); 689 break; 690 case KVM_REG_PPC_VRSAVE: 691 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { 692 r = -ENXIO; 693 break; 694 } 695 vcpu->arch.vrsave = set_reg_val(reg->id, val); 696 break; 697 #endif /* CONFIG_ALTIVEC */ 698 #ifdef CONFIG_VSX 699 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: 700 if (cpu_has_feature(CPU_FTR_VSX)) { 701 long int i = reg->id - KVM_REG_PPC_VSR0; 702 vcpu->arch.fp.fpr[i][0] = val.vsxval[0]; 703 vcpu->arch.fp.fpr[i][1] = val.vsxval[1]; 704 } else { 705 r = -ENXIO; 706 } 707 break; 708 #endif /* CONFIG_VSX */ 709 #ifdef CONFIG_KVM_XICS 710 case KVM_REG_PPC_ICP_STATE: 711 if (!vcpu->arch.icp) { 712 r = -ENXIO; 713 break; 714 } 715 r = kvmppc_xics_set_icp(vcpu, 716 set_reg_val(reg->id, val)); 717 break; 718 #endif /* CONFIG_KVM_XICS */ 719 default: 720 r = -EINVAL; 721 break; 722 } 723 } 724 725 return r; 726 } 727 728 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 729 { 730 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu); 731 } 732 733 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) 734 { 735 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu); 736 } 737 738 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) 739 { 740 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr); 741 } 742 EXPORT_SYMBOL_GPL(kvmppc_set_msr); 743 744 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 745 { 746 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu); 747 } 748 749 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 750 struct kvm_translation *tr) 751 { 752 return 0; 753 } 754 755 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 756 struct kvm_guest_debug *dbg) 757 { 758 return -EINVAL; 759 } 760 761 void kvmppc_decrementer_func(unsigned long data) 762 { 763 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; 764 765 kvmppc_core_queue_dec(vcpu); 766 kvm_vcpu_kick(vcpu); 767 } 768 769 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) 770 { 771 return kvm->arch.kvm_ops->vcpu_create(kvm, id); 772 } 773 774 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) 775 { 776 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu); 777 } 778 779 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu) 780 { 781 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu); 782 } 783 784 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) 785 { 786 return kvm->arch.kvm_ops->get_dirty_log(kvm, log); 787 } 788 789 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, 790 struct kvm_memory_slot *dont) 791 { 792 kvm->arch.kvm_ops->free_memslot(free, dont); 793 } 794 795 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, 796 unsigned long npages) 797 { 798 return kvm->arch.kvm_ops->create_memslot(slot, npages); 799 } 800 801 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) 802 { 803 kvm->arch.kvm_ops->flush_memslot(kvm, memslot); 804 } 805 806 int kvmppc_core_prepare_memory_region(struct kvm *kvm, 807 struct kvm_memory_slot *memslot, 808 struct kvm_userspace_memory_region *mem) 809 { 810 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem); 811 } 812 813 void kvmppc_core_commit_memory_region(struct kvm *kvm, 814 struct kvm_userspace_memory_region *mem, 815 const struct kvm_memory_slot *old) 816 { 817 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old); 818 } 819 820 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) 821 { 822 return kvm->arch.kvm_ops->unmap_hva(kvm, hva); 823 } 824 EXPORT_SYMBOL_GPL(kvm_unmap_hva); 825 826 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end) 827 { 828 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end); 829 } 830 831 int kvm_age_hva(struct kvm *kvm, unsigned long hva) 832 { 833 return kvm->arch.kvm_ops->age_hva(kvm, hva); 834 } 835 836 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) 837 { 838 return kvm->arch.kvm_ops->test_age_hva(kvm, hva); 839 } 840 841 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) 842 { 843 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte); 844 } 845 846 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) 847 { 848 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu); 849 } 850 851 int kvmppc_core_init_vm(struct kvm *kvm) 852 { 853 854 #ifdef CONFIG_PPC64 855 INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables); 856 INIT_LIST_HEAD(&kvm->arch.rtas_tokens); 857 #endif 858 859 return kvm->arch.kvm_ops->init_vm(kvm); 860 } 861 862 void kvmppc_core_destroy_vm(struct kvm *kvm) 863 { 864 kvm->arch.kvm_ops->destroy_vm(kvm); 865 866 #ifdef CONFIG_PPC64 867 kvmppc_rtas_tokens_free(kvm); 868 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); 869 #endif 870 } 871 872 int kvmppc_core_check_processor_compat(void) 873 { 874 /* 875 * We always return 0 for book3s. We check 876 * for compatability while loading the HV 877 * or PR module 878 */ 879 return 0; 880 } 881 882 static int kvmppc_book3s_init(void) 883 { 884 int r; 885 886 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); 887 if (r) 888 return r; 889 #ifdef CONFIG_KVM_BOOK3S_32 890 r = kvmppc_book3s_init_pr(); 891 #endif 892 return r; 893 894 } 895 896 static void kvmppc_book3s_exit(void) 897 { 898 #ifdef CONFIG_KVM_BOOK3S_32 899 kvmppc_book3s_exit_pr(); 900 #endif 901 kvm_exit(); 902 } 903 904 module_init(kvmppc_book3s_init); 905 module_exit(kvmppc_book3s_exit); 906 907 /* On 32bit this is our one and only kernel module */ 908 #ifdef CONFIG_KVM_BOOK3S_32 909 MODULE_ALIAS_MISCDEV(KVM_MINOR); 910 MODULE_ALIAS("devname:kvm"); 911 #endif 912