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); 882