1 /*- 2 * Copyright (c) 2011 NetApp, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/sysctl.h> 34 #include <sys/ioctl.h> 35 #include <sys/mman.h> 36 #include <sys/_iovec.h> 37 #include <sys/cpuset.h> 38 39 #include <x86/segments.h> 40 #include <machine/specialreg.h> 41 #include <machine/param.h> 42 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <assert.h> 46 #include <string.h> 47 #include <fcntl.h> 48 #include <unistd.h> 49 50 #include <libutil.h> 51 52 #include <machine/vmm.h> 53 #include <machine/vmm_dev.h> 54 55 #include "vmmapi.h" 56 57 #define MB (1024 * 1024UL) 58 #define GB (1024 * 1024 * 1024UL) 59 60 struct vmctx { 61 int fd; 62 uint32_t lowmem_limit; 63 enum vm_mmap_style vms; 64 int memflags; 65 size_t lowmem; 66 char *lowmem_addr; 67 size_t highmem; 68 char *highmem_addr; 69 char *name; 70 }; 71 72 #define CREATE(x) sysctlbyname("hw.vmm.create", NULL, NULL, (x), strlen((x))) 73 #define DESTROY(x) sysctlbyname("hw.vmm.destroy", NULL, NULL, (x), strlen((x))) 74 75 static int 76 vm_device_open(const char *name) 77 { 78 int fd, len; 79 char *vmfile; 80 81 len = strlen("/dev/vmm/") + strlen(name) + 1; 82 vmfile = malloc(len); 83 assert(vmfile != NULL); 84 snprintf(vmfile, len, "/dev/vmm/%s", name); 85 86 /* Open the device file */ 87 fd = open(vmfile, O_RDWR, 0); 88 89 free(vmfile); 90 return (fd); 91 } 92 93 int 94 vm_create(const char *name) 95 { 96 97 return (CREATE((char *)name)); 98 } 99 100 struct vmctx * 101 vm_open(const char *name) 102 { 103 struct vmctx *vm; 104 105 vm = malloc(sizeof(struct vmctx) + strlen(name) + 1); 106 assert(vm != NULL); 107 108 vm->fd = -1; 109 vm->memflags = 0; 110 vm->lowmem_limit = 3 * GB; 111 vm->name = (char *)(vm + 1); 112 strcpy(vm->name, name); 113 114 if ((vm->fd = vm_device_open(vm->name)) < 0) 115 goto err; 116 117 return (vm); 118 err: 119 vm_destroy(vm); 120 return (NULL); 121 } 122 123 void 124 vm_destroy(struct vmctx *vm) 125 { 126 assert(vm != NULL); 127 128 if (vm->fd >= 0) 129 close(vm->fd); 130 DESTROY(vm->name); 131 132 free(vm); 133 } 134 135 int 136 vm_parse_memsize(const char *optarg, size_t *ret_memsize) 137 { 138 char *endptr; 139 size_t optval; 140 int error; 141 142 optval = strtoul(optarg, &endptr, 0); 143 if (*optarg != '\0' && *endptr == '\0') { 144 /* 145 * For the sake of backward compatibility if the memory size 146 * specified on the command line is less than a megabyte then 147 * it is interpreted as being in units of MB. 148 */ 149 if (optval < MB) 150 optval *= MB; 151 *ret_memsize = optval; 152 error = 0; 153 } else 154 error = expand_number(optarg, ret_memsize); 155 156 return (error); 157 } 158 159 int 160 vm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa, size_t *ret_len, 161 int *wired) 162 { 163 int error; 164 struct vm_memory_segment seg; 165 166 bzero(&seg, sizeof(seg)); 167 seg.gpa = gpa; 168 error = ioctl(ctx->fd, VM_GET_MEMORY_SEG, &seg); 169 *ret_len = seg.len; 170 if (wired != NULL) 171 *wired = seg.wired; 172 return (error); 173 } 174 175 uint32_t 176 vm_get_lowmem_limit(struct vmctx *ctx) 177 { 178 179 return (ctx->lowmem_limit); 180 } 181 182 void 183 vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit) 184 { 185 186 ctx->lowmem_limit = limit; 187 } 188 189 void 190 vm_set_memflags(struct vmctx *ctx, int flags) 191 { 192 193 ctx->memflags = flags; 194 } 195 196 static int 197 setup_memory_segment(struct vmctx *ctx, vm_paddr_t gpa, size_t len, char **addr) 198 { 199 int error, mmap_flags; 200 struct vm_memory_segment seg; 201 202 /* 203 * Create and optionally map 'len' bytes of memory at guest 204 * physical address 'gpa' 205 */ 206 bzero(&seg, sizeof(seg)); 207 seg.gpa = gpa; 208 seg.len = len; 209 error = ioctl(ctx->fd, VM_MAP_MEMORY, &seg); 210 if (error == 0 && addr != NULL) { 211 mmap_flags = MAP_SHARED; 212 if ((ctx->memflags & VM_MEM_F_INCORE) == 0) 213 mmap_flags |= MAP_NOCORE; 214 *addr = mmap(NULL, len, PROT_READ | PROT_WRITE, mmap_flags, 215 ctx->fd, gpa); 216 } 217 return (error); 218 } 219 220 int 221 vm_setup_memory(struct vmctx *ctx, size_t memsize, enum vm_mmap_style vms) 222 { 223 char **addr; 224 int error; 225 226 /* XXX VM_MMAP_SPARSE not implemented yet */ 227 assert(vms == VM_MMAP_NONE || vms == VM_MMAP_ALL); 228 ctx->vms = vms; 229 230 /* 231 * If 'memsize' cannot fit entirely in the 'lowmem' segment then 232 * create another 'highmem' segment above 4GB for the remainder. 233 */ 234 if (memsize > ctx->lowmem_limit) { 235 ctx->lowmem = ctx->lowmem_limit; 236 ctx->highmem = memsize - ctx->lowmem; 237 } else { 238 ctx->lowmem = memsize; 239 ctx->highmem = 0; 240 } 241 242 if (ctx->lowmem > 0) { 243 addr = (vms == VM_MMAP_ALL) ? &ctx->lowmem_addr : NULL; 244 error = setup_memory_segment(ctx, 0, ctx->lowmem, addr); 245 if (error) 246 return (error); 247 } 248 249 if (ctx->highmem > 0) { 250 addr = (vms == VM_MMAP_ALL) ? &ctx->highmem_addr : NULL; 251 error = setup_memory_segment(ctx, 4*GB, ctx->highmem, addr); 252 if (error) 253 return (error); 254 } 255 256 return (0); 257 } 258 259 void * 260 vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len) 261 { 262 263 /* XXX VM_MMAP_SPARSE not implemented yet */ 264 assert(ctx->vms == VM_MMAP_ALL); 265 266 if (gaddr < ctx->lowmem && gaddr + len <= ctx->lowmem) 267 return ((void *)(ctx->lowmem_addr + gaddr)); 268 269 if (gaddr >= 4*GB) { 270 gaddr -= 4*GB; 271 if (gaddr < ctx->highmem && gaddr + len <= ctx->highmem) 272 return ((void *)(ctx->highmem_addr + gaddr)); 273 } 274 275 return (NULL); 276 } 277 278 size_t 279 vm_get_lowmem_size(struct vmctx *ctx) 280 { 281 282 return (ctx->lowmem); 283 } 284 285 size_t 286 vm_get_highmem_size(struct vmctx *ctx) 287 { 288 289 return (ctx->highmem); 290 } 291 292 int 293 vm_set_desc(struct vmctx *ctx, int vcpu, int reg, 294 uint64_t base, uint32_t limit, uint32_t access) 295 { 296 int error; 297 struct vm_seg_desc vmsegdesc; 298 299 bzero(&vmsegdesc, sizeof(vmsegdesc)); 300 vmsegdesc.cpuid = vcpu; 301 vmsegdesc.regnum = reg; 302 vmsegdesc.desc.base = base; 303 vmsegdesc.desc.limit = limit; 304 vmsegdesc.desc.access = access; 305 306 error = ioctl(ctx->fd, VM_SET_SEGMENT_DESCRIPTOR, &vmsegdesc); 307 return (error); 308 } 309 310 int 311 vm_get_desc(struct vmctx *ctx, int vcpu, int reg, 312 uint64_t *base, uint32_t *limit, uint32_t *access) 313 { 314 int error; 315 struct vm_seg_desc vmsegdesc; 316 317 bzero(&vmsegdesc, sizeof(vmsegdesc)); 318 vmsegdesc.cpuid = vcpu; 319 vmsegdesc.regnum = reg; 320 321 error = ioctl(ctx->fd, VM_GET_SEGMENT_DESCRIPTOR, &vmsegdesc); 322 if (error == 0) { 323 *base = vmsegdesc.desc.base; 324 *limit = vmsegdesc.desc.limit; 325 *access = vmsegdesc.desc.access; 326 } 327 return (error); 328 } 329 330 int 331 vm_get_seg_desc(struct vmctx *ctx, int vcpu, int reg, struct seg_desc *seg_desc) 332 { 333 int error; 334 335 error = vm_get_desc(ctx, vcpu, reg, &seg_desc->base, &seg_desc->limit, 336 &seg_desc->access); 337 return (error); 338 } 339 340 int 341 vm_set_register(struct vmctx *ctx, int vcpu, int reg, uint64_t val) 342 { 343 int error; 344 struct vm_register vmreg; 345 346 bzero(&vmreg, sizeof(vmreg)); 347 vmreg.cpuid = vcpu; 348 vmreg.regnum = reg; 349 vmreg.regval = val; 350 351 error = ioctl(ctx->fd, VM_SET_REGISTER, &vmreg); 352 return (error); 353 } 354 355 int 356 vm_get_register(struct vmctx *ctx, int vcpu, int reg, uint64_t *ret_val) 357 { 358 int error; 359 struct vm_register vmreg; 360 361 bzero(&vmreg, sizeof(vmreg)); 362 vmreg.cpuid = vcpu; 363 vmreg.regnum = reg; 364 365 error = ioctl(ctx->fd, VM_GET_REGISTER, &vmreg); 366 *ret_val = vmreg.regval; 367 return (error); 368 } 369 370 int 371 vm_run(struct vmctx *ctx, int vcpu, uint64_t rip, struct vm_exit *vmexit) 372 { 373 int error; 374 struct vm_run vmrun; 375 376 bzero(&vmrun, sizeof(vmrun)); 377 vmrun.cpuid = vcpu; 378 vmrun.rip = rip; 379 380 error = ioctl(ctx->fd, VM_RUN, &vmrun); 381 bcopy(&vmrun.vm_exit, vmexit, sizeof(struct vm_exit)); 382 return (error); 383 } 384 385 int 386 vm_suspend(struct vmctx *ctx, enum vm_suspend_how how) 387 { 388 struct vm_suspend vmsuspend; 389 390 bzero(&vmsuspend, sizeof(vmsuspend)); 391 vmsuspend.how = how; 392 return (ioctl(ctx->fd, VM_SUSPEND, &vmsuspend)); 393 } 394 395 int 396 vm_reinit(struct vmctx *ctx) 397 { 398 399 return (ioctl(ctx->fd, VM_REINIT, 0)); 400 } 401 402 static int 403 vm_inject_exception_real(struct vmctx *ctx, int vcpu, int vector, 404 int error_code, int error_code_valid) 405 { 406 struct vm_exception exc; 407 408 bzero(&exc, sizeof(exc)); 409 exc.cpuid = vcpu; 410 exc.vector = vector; 411 exc.error_code = error_code; 412 exc.error_code_valid = error_code_valid; 413 414 return (ioctl(ctx->fd, VM_INJECT_EXCEPTION, &exc)); 415 } 416 417 int 418 vm_inject_exception(struct vmctx *ctx, int vcpu, int vector) 419 { 420 421 return (vm_inject_exception_real(ctx, vcpu, vector, 0, 0)); 422 } 423 424 int 425 vm_inject_exception2(struct vmctx *ctx, int vcpu, int vector, int errcode) 426 { 427 428 return (vm_inject_exception_real(ctx, vcpu, vector, errcode, 1)); 429 } 430 431 int 432 vm_apicid2vcpu(struct vmctx *ctx, int apicid) 433 { 434 /* 435 * The apic id associated with the 'vcpu' has the same numerical value 436 * as the 'vcpu' itself. 437 */ 438 return (apicid); 439 } 440 441 int 442 vm_lapic_irq(struct vmctx *ctx, int vcpu, int vector) 443 { 444 struct vm_lapic_irq vmirq; 445 446 bzero(&vmirq, sizeof(vmirq)); 447 vmirq.cpuid = vcpu; 448 vmirq.vector = vector; 449 450 return (ioctl(ctx->fd, VM_LAPIC_IRQ, &vmirq)); 451 } 452 453 int 454 vm_lapic_local_irq(struct vmctx *ctx, int vcpu, int vector) 455 { 456 struct vm_lapic_irq vmirq; 457 458 bzero(&vmirq, sizeof(vmirq)); 459 vmirq.cpuid = vcpu; 460 vmirq.vector = vector; 461 462 return (ioctl(ctx->fd, VM_LAPIC_LOCAL_IRQ, &vmirq)); 463 } 464 465 int 466 vm_lapic_msi(struct vmctx *ctx, uint64_t addr, uint64_t msg) 467 { 468 struct vm_lapic_msi vmmsi; 469 470 bzero(&vmmsi, sizeof(vmmsi)); 471 vmmsi.addr = addr; 472 vmmsi.msg = msg; 473 474 return (ioctl(ctx->fd, VM_LAPIC_MSI, &vmmsi)); 475 } 476 477 int 478 vm_ioapic_assert_irq(struct vmctx *ctx, int irq) 479 { 480 struct vm_ioapic_irq ioapic_irq; 481 482 bzero(&ioapic_irq, sizeof(struct vm_ioapic_irq)); 483 ioapic_irq.irq = irq; 484 485 return (ioctl(ctx->fd, VM_IOAPIC_ASSERT_IRQ, &ioapic_irq)); 486 } 487 488 int 489 vm_ioapic_deassert_irq(struct vmctx *ctx, int irq) 490 { 491 struct vm_ioapic_irq ioapic_irq; 492 493 bzero(&ioapic_irq, sizeof(struct vm_ioapic_irq)); 494 ioapic_irq.irq = irq; 495 496 return (ioctl(ctx->fd, VM_IOAPIC_DEASSERT_IRQ, &ioapic_irq)); 497 } 498 499 int 500 vm_ioapic_pulse_irq(struct vmctx *ctx, int irq) 501 { 502 struct vm_ioapic_irq ioapic_irq; 503 504 bzero(&ioapic_irq, sizeof(struct vm_ioapic_irq)); 505 ioapic_irq.irq = irq; 506 507 return (ioctl(ctx->fd, VM_IOAPIC_PULSE_IRQ, &ioapic_irq)); 508 } 509 510 int 511 vm_ioapic_pincount(struct vmctx *ctx, int *pincount) 512 { 513 514 return (ioctl(ctx->fd, VM_IOAPIC_PINCOUNT, pincount)); 515 } 516 517 int 518 vm_isa_assert_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq) 519 { 520 struct vm_isa_irq isa_irq; 521 522 bzero(&isa_irq, sizeof(struct vm_isa_irq)); 523 isa_irq.atpic_irq = atpic_irq; 524 isa_irq.ioapic_irq = ioapic_irq; 525 526 return (ioctl(ctx->fd, VM_ISA_ASSERT_IRQ, &isa_irq)); 527 } 528 529 int 530 vm_isa_deassert_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq) 531 { 532 struct vm_isa_irq isa_irq; 533 534 bzero(&isa_irq, sizeof(struct vm_isa_irq)); 535 isa_irq.atpic_irq = atpic_irq; 536 isa_irq.ioapic_irq = ioapic_irq; 537 538 return (ioctl(ctx->fd, VM_ISA_DEASSERT_IRQ, &isa_irq)); 539 } 540 541 int 542 vm_isa_pulse_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq) 543 { 544 struct vm_isa_irq isa_irq; 545 546 bzero(&isa_irq, sizeof(struct vm_isa_irq)); 547 isa_irq.atpic_irq = atpic_irq; 548 isa_irq.ioapic_irq = ioapic_irq; 549 550 return (ioctl(ctx->fd, VM_ISA_PULSE_IRQ, &isa_irq)); 551 } 552 553 int 554 vm_isa_set_irq_trigger(struct vmctx *ctx, int atpic_irq, 555 enum vm_intr_trigger trigger) 556 { 557 struct vm_isa_irq_trigger isa_irq_trigger; 558 559 bzero(&isa_irq_trigger, sizeof(struct vm_isa_irq_trigger)); 560 isa_irq_trigger.atpic_irq = atpic_irq; 561 isa_irq_trigger.trigger = trigger; 562 563 return (ioctl(ctx->fd, VM_ISA_SET_IRQ_TRIGGER, &isa_irq_trigger)); 564 } 565 566 int 567 vm_inject_nmi(struct vmctx *ctx, int vcpu) 568 { 569 struct vm_nmi vmnmi; 570 571 bzero(&vmnmi, sizeof(vmnmi)); 572 vmnmi.cpuid = vcpu; 573 574 return (ioctl(ctx->fd, VM_INJECT_NMI, &vmnmi)); 575 } 576 577 static struct { 578 const char *name; 579 int type; 580 } capstrmap[] = { 581 { "hlt_exit", VM_CAP_HALT_EXIT }, 582 { "mtrap_exit", VM_CAP_MTRAP_EXIT }, 583 { "pause_exit", VM_CAP_PAUSE_EXIT }, 584 { "unrestricted_guest", VM_CAP_UNRESTRICTED_GUEST }, 585 { "enable_invpcid", VM_CAP_ENABLE_INVPCID }, 586 { 0 } 587 }; 588 589 int 590 vm_capability_name2type(const char *capname) 591 { 592 int i; 593 594 for (i = 0; capstrmap[i].name != NULL && capname != NULL; i++) { 595 if (strcmp(capstrmap[i].name, capname) == 0) 596 return (capstrmap[i].type); 597 } 598 599 return (-1); 600 } 601 602 const char * 603 vm_capability_type2name(int type) 604 { 605 int i; 606 607 for (i = 0; capstrmap[i].name != NULL; i++) { 608 if (capstrmap[i].type == type) 609 return (capstrmap[i].name); 610 } 611 612 return (NULL); 613 } 614 615 int 616 vm_get_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, 617 int *retval) 618 { 619 int error; 620 struct vm_capability vmcap; 621 622 bzero(&vmcap, sizeof(vmcap)); 623 vmcap.cpuid = vcpu; 624 vmcap.captype = cap; 625 626 error = ioctl(ctx->fd, VM_GET_CAPABILITY, &vmcap); 627 *retval = vmcap.capval; 628 return (error); 629 } 630 631 int 632 vm_set_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, int val) 633 { 634 struct vm_capability vmcap; 635 636 bzero(&vmcap, sizeof(vmcap)); 637 vmcap.cpuid = vcpu; 638 vmcap.captype = cap; 639 vmcap.capval = val; 640 641 return (ioctl(ctx->fd, VM_SET_CAPABILITY, &vmcap)); 642 } 643 644 int 645 vm_assign_pptdev(struct vmctx *ctx, int bus, int slot, int func) 646 { 647 struct vm_pptdev pptdev; 648 649 bzero(&pptdev, sizeof(pptdev)); 650 pptdev.bus = bus; 651 pptdev.slot = slot; 652 pptdev.func = func; 653 654 return (ioctl(ctx->fd, VM_BIND_PPTDEV, &pptdev)); 655 } 656 657 int 658 vm_unassign_pptdev(struct vmctx *ctx, int bus, int slot, int func) 659 { 660 struct vm_pptdev pptdev; 661 662 bzero(&pptdev, sizeof(pptdev)); 663 pptdev.bus = bus; 664 pptdev.slot = slot; 665 pptdev.func = func; 666 667 return (ioctl(ctx->fd, VM_UNBIND_PPTDEV, &pptdev)); 668 } 669 670 int 671 vm_map_pptdev_mmio(struct vmctx *ctx, int bus, int slot, int func, 672 vm_paddr_t gpa, size_t len, vm_paddr_t hpa) 673 { 674 struct vm_pptdev_mmio pptmmio; 675 676 bzero(&pptmmio, sizeof(pptmmio)); 677 pptmmio.bus = bus; 678 pptmmio.slot = slot; 679 pptmmio.func = func; 680 pptmmio.gpa = gpa; 681 pptmmio.len = len; 682 pptmmio.hpa = hpa; 683 684 return (ioctl(ctx->fd, VM_MAP_PPTDEV_MMIO, &pptmmio)); 685 } 686 687 int 688 vm_setup_pptdev_msi(struct vmctx *ctx, int vcpu, int bus, int slot, int func, 689 uint64_t addr, uint64_t msg, int numvec) 690 { 691 struct vm_pptdev_msi pptmsi; 692 693 bzero(&pptmsi, sizeof(pptmsi)); 694 pptmsi.vcpu = vcpu; 695 pptmsi.bus = bus; 696 pptmsi.slot = slot; 697 pptmsi.func = func; 698 pptmsi.msg = msg; 699 pptmsi.addr = addr; 700 pptmsi.numvec = numvec; 701 702 return (ioctl(ctx->fd, VM_PPTDEV_MSI, &pptmsi)); 703 } 704 705 int 706 vm_setup_pptdev_msix(struct vmctx *ctx, int vcpu, int bus, int slot, int func, 707 int idx, uint64_t addr, uint64_t msg, uint32_t vector_control) 708 { 709 struct vm_pptdev_msix pptmsix; 710 711 bzero(&pptmsix, sizeof(pptmsix)); 712 pptmsix.vcpu = vcpu; 713 pptmsix.bus = bus; 714 pptmsix.slot = slot; 715 pptmsix.func = func; 716 pptmsix.idx = idx; 717 pptmsix.msg = msg; 718 pptmsix.addr = addr; 719 pptmsix.vector_control = vector_control; 720 721 return ioctl(ctx->fd, VM_PPTDEV_MSIX, &pptmsix); 722 } 723 724 uint64_t * 725 vm_get_stats(struct vmctx *ctx, int vcpu, struct timeval *ret_tv, 726 int *ret_entries) 727 { 728 int error; 729 730 static struct vm_stats vmstats; 731 732 vmstats.cpuid = vcpu; 733 734 error = ioctl(ctx->fd, VM_STATS, &vmstats); 735 if (error == 0) { 736 if (ret_entries) 737 *ret_entries = vmstats.num_entries; 738 if (ret_tv) 739 *ret_tv = vmstats.tv; 740 return (vmstats.statbuf); 741 } else 742 return (NULL); 743 } 744 745 const char * 746 vm_get_stat_desc(struct vmctx *ctx, int index) 747 { 748 static struct vm_stat_desc statdesc; 749 750 statdesc.index = index; 751 if (ioctl(ctx->fd, VM_STAT_DESC, &statdesc) == 0) 752 return (statdesc.desc); 753 else 754 return (NULL); 755 } 756 757 int 758 vm_get_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state *state) 759 { 760 int error; 761 struct vm_x2apic x2apic; 762 763 bzero(&x2apic, sizeof(x2apic)); 764 x2apic.cpuid = vcpu; 765 766 error = ioctl(ctx->fd, VM_GET_X2APIC_STATE, &x2apic); 767 *state = x2apic.state; 768 return (error); 769 } 770 771 int 772 vm_set_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state state) 773 { 774 int error; 775 struct vm_x2apic x2apic; 776 777 bzero(&x2apic, sizeof(x2apic)); 778 x2apic.cpuid = vcpu; 779 x2apic.state = state; 780 781 error = ioctl(ctx->fd, VM_SET_X2APIC_STATE, &x2apic); 782 783 return (error); 784 } 785 786 /* 787 * From Intel Vol 3a: 788 * Table 9-1. IA-32 Processor States Following Power-up, Reset or INIT 789 */ 790 int 791 vcpu_reset(struct vmctx *vmctx, int vcpu) 792 { 793 int error; 794 uint64_t rflags, rip, cr0, cr4, zero, desc_base, rdx; 795 uint32_t desc_access, desc_limit; 796 uint16_t sel; 797 798 zero = 0; 799 800 rflags = 0x2; 801 error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RFLAGS, rflags); 802 if (error) 803 goto done; 804 805 rip = 0xfff0; 806 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RIP, rip)) != 0) 807 goto done; 808 809 cr0 = CR0_NE; 810 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR0, cr0)) != 0) 811 goto done; 812 813 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR3, zero)) != 0) 814 goto done; 815 816 cr4 = 0; 817 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR4, cr4)) != 0) 818 goto done; 819 820 /* 821 * CS: present, r/w, accessed, 16-bit, byte granularity, usable 822 */ 823 desc_base = 0xffff0000; 824 desc_limit = 0xffff; 825 desc_access = 0x0093; 826 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_CS, 827 desc_base, desc_limit, desc_access); 828 if (error) 829 goto done; 830 831 sel = 0xf000; 832 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CS, sel)) != 0) 833 goto done; 834 835 /* 836 * SS,DS,ES,FS,GS: present, r/w, accessed, 16-bit, byte granularity 837 */ 838 desc_base = 0; 839 desc_limit = 0xffff; 840 desc_access = 0x0093; 841 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_SS, 842 desc_base, desc_limit, desc_access); 843 if (error) 844 goto done; 845 846 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_DS, 847 desc_base, desc_limit, desc_access); 848 if (error) 849 goto done; 850 851 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_ES, 852 desc_base, desc_limit, desc_access); 853 if (error) 854 goto done; 855 856 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_FS, 857 desc_base, desc_limit, desc_access); 858 if (error) 859 goto done; 860 861 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GS, 862 desc_base, desc_limit, desc_access); 863 if (error) 864 goto done; 865 866 sel = 0; 867 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_SS, sel)) != 0) 868 goto done; 869 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_DS, sel)) != 0) 870 goto done; 871 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_ES, sel)) != 0) 872 goto done; 873 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_FS, sel)) != 0) 874 goto done; 875 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_GS, sel)) != 0) 876 goto done; 877 878 /* General purpose registers */ 879 rdx = 0xf00; 880 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RAX, zero)) != 0) 881 goto done; 882 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBX, zero)) != 0) 883 goto done; 884 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RCX, zero)) != 0) 885 goto done; 886 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDX, rdx)) != 0) 887 goto done; 888 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSI, zero)) != 0) 889 goto done; 890 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDI, zero)) != 0) 891 goto done; 892 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBP, zero)) != 0) 893 goto done; 894 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSP, zero)) != 0) 895 goto done; 896 897 /* GDTR, IDTR */ 898 desc_base = 0; 899 desc_limit = 0xffff; 900 desc_access = 0; 901 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GDTR, 902 desc_base, desc_limit, desc_access); 903 if (error != 0) 904 goto done; 905 906 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_IDTR, 907 desc_base, desc_limit, desc_access); 908 if (error != 0) 909 goto done; 910 911 /* TR */ 912 desc_base = 0; 913 desc_limit = 0xffff; 914 desc_access = 0x0000008b; 915 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_TR, 0, 0, desc_access); 916 if (error) 917 goto done; 918 919 sel = 0; 920 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_TR, sel)) != 0) 921 goto done; 922 923 /* LDTR */ 924 desc_base = 0; 925 desc_limit = 0xffff; 926 desc_access = 0x00000082; 927 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_LDTR, desc_base, 928 desc_limit, desc_access); 929 if (error) 930 goto done; 931 932 sel = 0; 933 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_LDTR, 0)) != 0) 934 goto done; 935 936 /* XXX cr2, debug registers */ 937 938 error = 0; 939 done: 940 return (error); 941 } 942 943 int 944 vm_get_gpa_pmap(struct vmctx *ctx, uint64_t gpa, uint64_t *pte, int *num) 945 { 946 int error, i; 947 struct vm_gpa_pte gpapte; 948 949 bzero(&gpapte, sizeof(gpapte)); 950 gpapte.gpa = gpa; 951 952 error = ioctl(ctx->fd, VM_GET_GPA_PMAP, &gpapte); 953 954 if (error == 0) { 955 *num = gpapte.ptenum; 956 for (i = 0; i < gpapte.ptenum; i++) 957 pte[i] = gpapte.pte[i]; 958 } 959 960 return (error); 961 } 962 963 int 964 vm_get_hpet_capabilities(struct vmctx *ctx, uint32_t *capabilities) 965 { 966 int error; 967 struct vm_hpet_cap cap; 968 969 bzero(&cap, sizeof(struct vm_hpet_cap)); 970 error = ioctl(ctx->fd, VM_GET_HPET_CAPABILITIES, &cap); 971 if (capabilities != NULL) 972 *capabilities = cap.capabilities; 973 return (error); 974 } 975 976 static int 977 gla2gpa(struct vmctx *ctx, int vcpu, struct vm_guest_paging *paging, 978 uint64_t gla, int prot, int *fault, uint64_t *gpa) 979 { 980 struct vm_gla2gpa gg; 981 int error; 982 983 bzero(&gg, sizeof(struct vm_gla2gpa)); 984 gg.vcpuid = vcpu; 985 gg.prot = prot; 986 gg.gla = gla; 987 gg.paging = *paging; 988 989 error = ioctl(ctx->fd, VM_GLA2GPA, &gg); 990 if (error == 0) { 991 *fault = gg.fault; 992 *gpa = gg.gpa; 993 } 994 return (error); 995 } 996 997 #ifndef min 998 #define min(a,b) (((a) < (b)) ? (a) : (b)) 999 #endif 1000 1001 int 1002 vm_copy_setup(struct vmctx *ctx, int vcpu, struct vm_guest_paging *paging, 1003 uint64_t gla, size_t len, int prot, struct iovec *iov, int iovcnt) 1004 { 1005 uint64_t gpa; 1006 int error, fault, i, n, off; 1007 1008 for (i = 0; i < iovcnt; i++) { 1009 iov[i].iov_base = 0; 1010 iov[i].iov_len = 0; 1011 } 1012 1013 while (len) { 1014 assert(iovcnt > 0); 1015 error = gla2gpa(ctx, vcpu, paging, gla, prot, &fault, &gpa); 1016 if (error) 1017 return (-1); 1018 if (fault) 1019 return (1); 1020 1021 off = gpa & PAGE_MASK; 1022 n = min(len, PAGE_SIZE - off); 1023 1024 iov->iov_base = (void *)gpa; 1025 iov->iov_len = n; 1026 iov++; 1027 iovcnt--; 1028 1029 gla += n; 1030 len -= n; 1031 } 1032 return (0); 1033 } 1034 1035 void 1036 vm_copyin(struct vmctx *ctx, int vcpu, struct iovec *iov, void *vp, size_t len) 1037 { 1038 const char *src; 1039 char *dst; 1040 uint64_t gpa; 1041 size_t n; 1042 1043 dst = vp; 1044 while (len) { 1045 assert(iov->iov_len); 1046 gpa = (uint64_t)iov->iov_base; 1047 n = min(len, iov->iov_len); 1048 src = vm_map_gpa(ctx, gpa, n); 1049 bcopy(src, dst, n); 1050 1051 iov++; 1052 dst += n; 1053 len -= n; 1054 } 1055 } 1056 1057 void 1058 vm_copyout(struct vmctx *ctx, int vcpu, const void *vp, struct iovec *iov, 1059 size_t len) 1060 { 1061 const char *src; 1062 char *dst; 1063 uint64_t gpa; 1064 size_t n; 1065 1066 src = vp; 1067 while (len) { 1068 assert(iov->iov_len); 1069 gpa = (uint64_t)iov->iov_base; 1070 n = min(len, iov->iov_len); 1071 dst = vm_map_gpa(ctx, gpa, n); 1072 bcopy(src, dst, n); 1073 1074 iov++; 1075 src += n; 1076 len -= n; 1077 } 1078 } 1079 1080 static int 1081 vm_get_cpus(struct vmctx *ctx, int which, cpuset_t *cpus) 1082 { 1083 struct vm_cpuset vm_cpuset; 1084 int error; 1085 1086 bzero(&vm_cpuset, sizeof(struct vm_cpuset)); 1087 vm_cpuset.which = which; 1088 vm_cpuset.cpusetsize = sizeof(cpuset_t); 1089 vm_cpuset.cpus = cpus; 1090 1091 error = ioctl(ctx->fd, VM_GET_CPUS, &vm_cpuset); 1092 return (error); 1093 } 1094 1095 int 1096 vm_active_cpus(struct vmctx *ctx, cpuset_t *cpus) 1097 { 1098 1099 return (vm_get_cpus(ctx, VM_ACTIVE_CPUS, cpus)); 1100 } 1101 1102 int 1103 vm_suspended_cpus(struct vmctx *ctx, cpuset_t *cpus) 1104 { 1105 1106 return (vm_get_cpus(ctx, VM_SUSPENDED_CPUS, cpus)); 1107 } 1108 1109 int 1110 vm_activate_cpu(struct vmctx *ctx, int vcpu) 1111 { 1112 struct vm_activate_cpu ac; 1113 int error; 1114 1115 bzero(&ac, sizeof(struct vm_activate_cpu)); 1116 ac.vcpuid = vcpu; 1117 error = ioctl(ctx->fd, VM_ACTIVATE_CPU, &ac); 1118 return (error); 1119 } 1120 1121 int 1122 vm_get_intinfo(struct vmctx *ctx, int vcpu, uint64_t *info1, uint64_t *info2) 1123 { 1124 struct vm_intinfo vmii; 1125 int error; 1126 1127 bzero(&vmii, sizeof(struct vm_intinfo)); 1128 vmii.vcpuid = vcpu; 1129 error = ioctl(ctx->fd, VM_GET_INTINFO, &vmii); 1130 if (error == 0) { 1131 *info1 = vmii.info1; 1132 *info2 = vmii.info2; 1133 } 1134 return (error); 1135 } 1136 1137 int 1138 vm_set_intinfo(struct vmctx *ctx, int vcpu, uint64_t info1) 1139 { 1140 struct vm_intinfo vmii; 1141 int error; 1142 1143 bzero(&vmii, sizeof(struct vm_intinfo)); 1144 vmii.vcpuid = vcpu; 1145 vmii.info1 = info1; 1146 error = ioctl(ctx->fd, VM_SET_INTINFO, &vmii); 1147 return (error); 1148 } 1149