vmmapi.c revision 239025
1221828Sgrehan/*- 2221828Sgrehan * Copyright (c) 2011 NetApp, Inc. 3221828Sgrehan * All rights reserved. 4221828Sgrehan * 5221828Sgrehan * Redistribution and use in source and binary forms, with or without 6221828Sgrehan * modification, are permitted provided that the following conditions 7221828Sgrehan * are met: 8221828Sgrehan * 1. Redistributions of source code must retain the above copyright 9221828Sgrehan * notice, this list of conditions and the following disclaimer. 10221828Sgrehan * 2. Redistributions in binary form must reproduce the above copyright 11221828Sgrehan * notice, this list of conditions and the following disclaimer in the 12221828Sgrehan * documentation and/or other materials provided with the distribution. 13221828Sgrehan * 14221828Sgrehan * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15221828Sgrehan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16221828Sgrehan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17221828Sgrehan * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18221828Sgrehan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19221828Sgrehan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20221828Sgrehan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21221828Sgrehan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22221828Sgrehan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23221828Sgrehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24221828Sgrehan * SUCH DAMAGE. 25221828Sgrehan * 26221828Sgrehan * $FreeBSD$ 27221828Sgrehan */ 28221828Sgrehan 29221828Sgrehan#include <sys/cdefs.h> 30221828Sgrehan__FBSDID("$FreeBSD$"); 31221828Sgrehan 32221828Sgrehan#include <sys/types.h> 33221828Sgrehan#include <sys/sysctl.h> 34221828Sgrehan#include <sys/ioctl.h> 35221828Sgrehan#include <sys/mman.h> 36221828Sgrehan 37221828Sgrehan#include <machine/specialreg.h> 38221828Sgrehan 39221828Sgrehan#include <stdio.h> 40221828Sgrehan#include <stdlib.h> 41221828Sgrehan#include <assert.h> 42221828Sgrehan#include <string.h> 43221828Sgrehan#include <fcntl.h> 44221828Sgrehan#include <unistd.h> 45221828Sgrehan 46221828Sgrehan#include <machine/vmm.h> 47221828Sgrehan#include <machine/vmm_dev.h> 48221828Sgrehan 49221828Sgrehan#include "vmmapi.h" 50221828Sgrehan#include "mptable.h" 51221828Sgrehan 52221828Sgrehan#define BIOS_ROM_BASE (0xf0000) 53221828Sgrehan#define BIOS_ROM_SIZE (0x10000) 54221828Sgrehan 55221828Sgrehanstruct vmctx { 56221828Sgrehan int fd; 57221828Sgrehan char *name; 58221828Sgrehan}; 59221828Sgrehan 60221828Sgrehan#define CREATE(x) sysctlbyname("hw.vmm.create", NULL, NULL, (x), strlen((x))) 61221828Sgrehan#define DESTROY(x) sysctlbyname("hw.vmm.destroy", NULL, NULL, (x), strlen((x))) 62221828Sgrehan 63221828Sgrehanstatic int 64221828Sgrehanvm_device_open(const char *name) 65221828Sgrehan{ 66221828Sgrehan int fd, len; 67221828Sgrehan char *vmfile; 68221828Sgrehan 69221828Sgrehan len = strlen("/dev/vmm/") + strlen(name) + 1; 70221828Sgrehan vmfile = malloc(len); 71221828Sgrehan assert(vmfile != NULL); 72221828Sgrehan snprintf(vmfile, len, "/dev/vmm/%s", name); 73221828Sgrehan 74221828Sgrehan /* Open the device file */ 75221828Sgrehan fd = open(vmfile, O_RDWR, 0); 76221828Sgrehan 77221828Sgrehan free(vmfile); 78221828Sgrehan return (fd); 79221828Sgrehan} 80221828Sgrehan 81221828Sgrehanint 82221828Sgrehanvm_create(const char *name) 83221828Sgrehan{ 84221828Sgrehan 85221828Sgrehan return (CREATE((char *)name)); 86221828Sgrehan} 87221828Sgrehan 88221828Sgrehanstruct vmctx * 89221828Sgrehanvm_open(const char *name) 90221828Sgrehan{ 91221828Sgrehan struct vmctx *vm; 92221828Sgrehan 93221828Sgrehan vm = malloc(sizeof(struct vmctx) + strlen(name) + 1); 94221828Sgrehan assert(vm != NULL); 95221828Sgrehan 96221828Sgrehan vm->fd = -1; 97221828Sgrehan vm->name = (char *)(vm + 1); 98221828Sgrehan strcpy(vm->name, name); 99221828Sgrehan 100221828Sgrehan if ((vm->fd = vm_device_open(vm->name)) < 0) 101221828Sgrehan goto err; 102221828Sgrehan 103221828Sgrehan return (vm); 104221828Sgrehanerr: 105221828Sgrehan vm_destroy(vm); 106221828Sgrehan return (NULL); 107221828Sgrehan} 108221828Sgrehan 109221828Sgrehanvoid 110221828Sgrehanvm_destroy(struct vmctx *vm) 111221828Sgrehan{ 112221828Sgrehan assert(vm != NULL); 113221828Sgrehan 114221828Sgrehan DESTROY(vm->name); 115221828Sgrehan if (vm->fd >= 0) 116221828Sgrehan close(vm->fd); 117221828Sgrehan free(vm); 118221828Sgrehan} 119221828Sgrehan 120221828Sgrehanint 121221828Sgrehanvm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa, 122221828Sgrehan vm_paddr_t *ret_hpa, size_t *ret_len) 123221828Sgrehan{ 124221828Sgrehan int error; 125221828Sgrehan struct vm_memory_segment seg; 126221828Sgrehan 127221828Sgrehan bzero(&seg, sizeof(seg)); 128221828Sgrehan seg.gpa = gpa; 129221828Sgrehan error = ioctl(ctx->fd, VM_GET_MEMORY_SEG, &seg); 130221828Sgrehan *ret_hpa = seg.hpa; 131221828Sgrehan *ret_len = seg.len; 132221828Sgrehan return (error); 133221828Sgrehan} 134221828Sgrehan 135221828Sgrehanint 136221828Sgrehanvm_setup_memory(struct vmctx *ctx, vm_paddr_t gpa, size_t len, char **mapaddr) 137221828Sgrehan{ 138221828Sgrehan int error; 139221828Sgrehan struct vm_memory_segment seg; 140221828Sgrehan 141221828Sgrehan /* 142221828Sgrehan * Create and optionally map 'len' bytes of memory at guest 143221828Sgrehan * physical address 'gpa' 144221828Sgrehan */ 145221828Sgrehan bzero(&seg, sizeof(seg)); 146221828Sgrehan seg.gpa = gpa; 147221828Sgrehan seg.len = len; 148221828Sgrehan error = ioctl(ctx->fd, VM_MAP_MEMORY, &seg); 149221828Sgrehan if (error == 0 && mapaddr != NULL) { 150221828Sgrehan *mapaddr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, 151221828Sgrehan ctx->fd, gpa); 152221828Sgrehan } 153221828Sgrehan return (error); 154221828Sgrehan} 155221828Sgrehan 156221828Sgrehanchar * 157221828Sgrehanvm_map_memory(struct vmctx *ctx, vm_paddr_t gpa, size_t len) 158221828Sgrehan{ 159221828Sgrehan 160221828Sgrehan /* Map 'len' bytes of memory at guest physical address 'gpa' */ 161221828Sgrehan return ((char *)mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, 162221828Sgrehan ctx->fd, gpa)); 163221828Sgrehan} 164221828Sgrehan 165221828Sgrehanint 166221828Sgrehanvm_set_desc(struct vmctx *ctx, int vcpu, int reg, 167221828Sgrehan uint64_t base, uint32_t limit, uint32_t access) 168221828Sgrehan{ 169221828Sgrehan int error; 170221828Sgrehan struct vm_seg_desc vmsegdesc; 171221828Sgrehan 172221828Sgrehan bzero(&vmsegdesc, sizeof(vmsegdesc)); 173221828Sgrehan vmsegdesc.cpuid = vcpu; 174221828Sgrehan vmsegdesc.regnum = reg; 175221828Sgrehan vmsegdesc.desc.base = base; 176221828Sgrehan vmsegdesc.desc.limit = limit; 177221828Sgrehan vmsegdesc.desc.access = access; 178221828Sgrehan 179221828Sgrehan error = ioctl(ctx->fd, VM_SET_SEGMENT_DESCRIPTOR, &vmsegdesc); 180221828Sgrehan return (error); 181221828Sgrehan} 182221828Sgrehan 183221828Sgrehanint 184221828Sgrehanvm_get_desc(struct vmctx *ctx, int vcpu, int reg, 185221828Sgrehan uint64_t *base, uint32_t *limit, uint32_t *access) 186221828Sgrehan{ 187221828Sgrehan int error; 188221828Sgrehan struct vm_seg_desc vmsegdesc; 189221828Sgrehan 190221828Sgrehan bzero(&vmsegdesc, sizeof(vmsegdesc)); 191221828Sgrehan vmsegdesc.cpuid = vcpu; 192221828Sgrehan vmsegdesc.regnum = reg; 193221828Sgrehan 194221828Sgrehan error = ioctl(ctx->fd, VM_GET_SEGMENT_DESCRIPTOR, &vmsegdesc); 195221828Sgrehan if (error == 0) { 196221828Sgrehan *base = vmsegdesc.desc.base; 197221828Sgrehan *limit = vmsegdesc.desc.limit; 198221828Sgrehan *access = vmsegdesc.desc.access; 199221828Sgrehan } 200221828Sgrehan return (error); 201221828Sgrehan} 202221828Sgrehan 203221828Sgrehanint 204221828Sgrehanvm_set_register(struct vmctx *ctx, int vcpu, int reg, uint64_t val) 205221828Sgrehan{ 206221828Sgrehan int error; 207221828Sgrehan struct vm_register vmreg; 208221828Sgrehan 209221828Sgrehan bzero(&vmreg, sizeof(vmreg)); 210221828Sgrehan vmreg.cpuid = vcpu; 211221828Sgrehan vmreg.regnum = reg; 212221828Sgrehan vmreg.regval = val; 213221828Sgrehan 214221828Sgrehan error = ioctl(ctx->fd, VM_SET_REGISTER, &vmreg); 215221828Sgrehan return (error); 216221828Sgrehan} 217221828Sgrehan 218221828Sgrehanint 219221828Sgrehanvm_get_register(struct vmctx *ctx, int vcpu, int reg, uint64_t *ret_val) 220221828Sgrehan{ 221221828Sgrehan int error; 222221828Sgrehan struct vm_register vmreg; 223221828Sgrehan 224221828Sgrehan bzero(&vmreg, sizeof(vmreg)); 225221828Sgrehan vmreg.cpuid = vcpu; 226221828Sgrehan vmreg.regnum = reg; 227221828Sgrehan 228221828Sgrehan error = ioctl(ctx->fd, VM_GET_REGISTER, &vmreg); 229221828Sgrehan *ret_val = vmreg.regval; 230221828Sgrehan return (error); 231221828Sgrehan} 232221828Sgrehan 233221828Sgrehanint 234221828Sgrehanvm_get_pinning(struct vmctx *ctx, int vcpu, int *host_cpuid) 235221828Sgrehan{ 236221828Sgrehan int error; 237221828Sgrehan struct vm_pin vmpin; 238221828Sgrehan 239221828Sgrehan bzero(&vmpin, sizeof(vmpin)); 240221828Sgrehan vmpin.vm_cpuid = vcpu; 241221828Sgrehan 242221828Sgrehan error = ioctl(ctx->fd, VM_GET_PINNING, &vmpin); 243221828Sgrehan *host_cpuid = vmpin.host_cpuid; 244221828Sgrehan return (error); 245221828Sgrehan} 246221828Sgrehan 247221828Sgrehanint 248221828Sgrehanvm_set_pinning(struct vmctx *ctx, int vcpu, int host_cpuid) 249221828Sgrehan{ 250221828Sgrehan int error; 251221828Sgrehan struct vm_pin vmpin; 252221828Sgrehan 253221828Sgrehan bzero(&vmpin, sizeof(vmpin)); 254221828Sgrehan vmpin.vm_cpuid = vcpu; 255221828Sgrehan vmpin.host_cpuid = host_cpuid; 256221828Sgrehan 257221828Sgrehan error = ioctl(ctx->fd, VM_SET_PINNING, &vmpin); 258221828Sgrehan return (error); 259221828Sgrehan} 260221828Sgrehan 261221828Sgrehanint 262221828Sgrehanvm_run(struct vmctx *ctx, int vcpu, uint64_t rip, struct vm_exit *vmexit) 263221828Sgrehan{ 264221828Sgrehan int error; 265221828Sgrehan struct vm_run vmrun; 266221828Sgrehan 267221828Sgrehan bzero(&vmrun, sizeof(vmrun)); 268221828Sgrehan vmrun.cpuid = vcpu; 269221828Sgrehan vmrun.rip = rip; 270221828Sgrehan 271221828Sgrehan error = ioctl(ctx->fd, VM_RUN, &vmrun); 272221828Sgrehan bcopy(&vmrun.vm_exit, vmexit, sizeof(struct vm_exit)); 273221828Sgrehan return (error); 274221828Sgrehan} 275221828Sgrehan 276221828Sgrehanstatic int 277221828Sgrehanvm_inject_event_real(struct vmctx *ctx, int vcpu, enum vm_event_type type, 278221828Sgrehan int vector, int error_code, int error_code_valid) 279221828Sgrehan{ 280221828Sgrehan struct vm_event ev; 281221828Sgrehan 282221828Sgrehan bzero(&ev, sizeof(ev)); 283221828Sgrehan ev.cpuid = vcpu; 284221828Sgrehan ev.type = type; 285221828Sgrehan ev.vector = vector; 286221828Sgrehan ev.error_code = error_code; 287221828Sgrehan ev.error_code_valid = error_code_valid; 288221828Sgrehan 289221828Sgrehan return (ioctl(ctx->fd, VM_INJECT_EVENT, &ev)); 290221828Sgrehan} 291221828Sgrehan 292221828Sgrehanint 293221828Sgrehanvm_inject_event(struct vmctx *ctx, int vcpu, enum vm_event_type type, 294221828Sgrehan int vector) 295221828Sgrehan{ 296221828Sgrehan 297221828Sgrehan return (vm_inject_event_real(ctx, vcpu, type, vector, 0, 0)); 298221828Sgrehan} 299221828Sgrehan 300221828Sgrehanint 301221828Sgrehanvm_inject_event2(struct vmctx *ctx, int vcpu, enum vm_event_type type, 302221828Sgrehan int vector, int error_code) 303221828Sgrehan{ 304221828Sgrehan 305221828Sgrehan return (vm_inject_event_real(ctx, vcpu, type, vector, error_code, 1)); 306221828Sgrehan} 307221828Sgrehan 308221828Sgrehanint 309221828Sgrehanvm_build_tables(struct vmctx *ctxt, int ncpu, void *oemtbl, int oemtblsz) 310221828Sgrehan{ 311221828Sgrehan 312221828Sgrehan return (vm_build_mptable(ctxt, BIOS_ROM_BASE, BIOS_ROM_SIZE, ncpu, 313221828Sgrehan oemtbl, oemtblsz)); 314221828Sgrehan} 315221828Sgrehan 316221828Sgrehanint 317221828Sgrehanvm_lapic_irq(struct vmctx *ctx, int vcpu, int vector) 318221828Sgrehan{ 319221828Sgrehan struct vm_lapic_irq vmirq; 320221828Sgrehan 321221828Sgrehan bzero(&vmirq, sizeof(vmirq)); 322221828Sgrehan vmirq.cpuid = vcpu; 323221828Sgrehan vmirq.vector = vector; 324221828Sgrehan 325221828Sgrehan return (ioctl(ctx->fd, VM_LAPIC_IRQ, &vmirq)); 326221828Sgrehan} 327221828Sgrehan 328221828Sgrehanint 329221828Sgrehanvm_inject_nmi(struct vmctx *ctx, int vcpu) 330221828Sgrehan{ 331221828Sgrehan struct vm_nmi vmnmi; 332221828Sgrehan 333221828Sgrehan bzero(&vmnmi, sizeof(vmnmi)); 334221828Sgrehan vmnmi.cpuid = vcpu; 335221828Sgrehan 336221828Sgrehan return (ioctl(ctx->fd, VM_INJECT_NMI, &vmnmi)); 337221828Sgrehan} 338221828Sgrehan 339221828Sgrehanint 340221828Sgrehanvm_capability_name2type(const char *capname) 341221828Sgrehan{ 342221828Sgrehan int i; 343221828Sgrehan 344221828Sgrehan static struct { 345221828Sgrehan const char *name; 346221828Sgrehan int type; 347221828Sgrehan } capstrmap[] = { 348221828Sgrehan { "hlt_exit", VM_CAP_HALT_EXIT }, 349221828Sgrehan { "mtrap_exit", VM_CAP_MTRAP_EXIT }, 350221828Sgrehan { "pause_exit", VM_CAP_PAUSE_EXIT }, 351221828Sgrehan { "unrestricted_guest", VM_CAP_UNRESTRICTED_GUEST }, 352221828Sgrehan { 0 } 353221828Sgrehan }; 354221828Sgrehan 355221828Sgrehan for (i = 0; capstrmap[i].name != NULL && capname != NULL; i++) { 356221828Sgrehan if (strcmp(capstrmap[i].name, capname) == 0) 357221828Sgrehan return (capstrmap[i].type); 358221828Sgrehan } 359221828Sgrehan 360221828Sgrehan return (-1); 361221828Sgrehan} 362221828Sgrehan 363221828Sgrehanint 364221828Sgrehanvm_get_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, 365221828Sgrehan int *retval) 366221828Sgrehan{ 367221828Sgrehan int error; 368221828Sgrehan struct vm_capability vmcap; 369221828Sgrehan 370221828Sgrehan bzero(&vmcap, sizeof(vmcap)); 371221828Sgrehan vmcap.cpuid = vcpu; 372221828Sgrehan vmcap.captype = cap; 373221828Sgrehan 374221828Sgrehan error = ioctl(ctx->fd, VM_GET_CAPABILITY, &vmcap); 375221828Sgrehan *retval = vmcap.capval; 376221828Sgrehan return (error); 377221828Sgrehan} 378221828Sgrehan 379221828Sgrehanint 380221828Sgrehanvm_set_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, int val) 381221828Sgrehan{ 382221828Sgrehan struct vm_capability vmcap; 383221828Sgrehan 384221828Sgrehan bzero(&vmcap, sizeof(vmcap)); 385221828Sgrehan vmcap.cpuid = vcpu; 386221828Sgrehan vmcap.captype = cap; 387221828Sgrehan vmcap.capval = val; 388221828Sgrehan 389221828Sgrehan return (ioctl(ctx->fd, VM_SET_CAPABILITY, &vmcap)); 390221828Sgrehan} 391221828Sgrehan 392221828Sgrehanint 393221828Sgrehanvm_assign_pptdev(struct vmctx *ctx, int bus, int slot, int func) 394221828Sgrehan{ 395221828Sgrehan struct vm_pptdev pptdev; 396221828Sgrehan 397221828Sgrehan bzero(&pptdev, sizeof(pptdev)); 398221828Sgrehan pptdev.bus = bus; 399221828Sgrehan pptdev.slot = slot; 400221828Sgrehan pptdev.func = func; 401221828Sgrehan 402221828Sgrehan return (ioctl(ctx->fd, VM_BIND_PPTDEV, &pptdev)); 403221828Sgrehan} 404221828Sgrehan 405221828Sgrehanint 406221828Sgrehanvm_unassign_pptdev(struct vmctx *ctx, int bus, int slot, int func) 407221828Sgrehan{ 408221828Sgrehan struct vm_pptdev pptdev; 409221828Sgrehan 410221828Sgrehan bzero(&pptdev, sizeof(pptdev)); 411221828Sgrehan pptdev.bus = bus; 412221828Sgrehan pptdev.slot = slot; 413221828Sgrehan pptdev.func = func; 414221828Sgrehan 415221828Sgrehan return (ioctl(ctx->fd, VM_UNBIND_PPTDEV, &pptdev)); 416221828Sgrehan} 417221828Sgrehan 418221828Sgrehanint 419221828Sgrehanvm_map_pptdev_mmio(struct vmctx *ctx, int bus, int slot, int func, 420221828Sgrehan vm_paddr_t gpa, size_t len, vm_paddr_t hpa) 421221828Sgrehan{ 422221828Sgrehan struct vm_pptdev_mmio pptmmio; 423221828Sgrehan 424221828Sgrehan bzero(&pptmmio, sizeof(pptmmio)); 425221828Sgrehan pptmmio.bus = bus; 426221828Sgrehan pptmmio.slot = slot; 427221828Sgrehan pptmmio.func = func; 428221828Sgrehan pptmmio.gpa = gpa; 429221828Sgrehan pptmmio.len = len; 430221828Sgrehan pptmmio.hpa = hpa; 431221828Sgrehan 432221828Sgrehan return (ioctl(ctx->fd, VM_MAP_PPTDEV_MMIO, &pptmmio)); 433221828Sgrehan} 434221828Sgrehan 435221828Sgrehanint 436221828Sgrehanvm_setup_msi(struct vmctx *ctx, int vcpu, int bus, int slot, int func, 437221828Sgrehan int destcpu, int vector, int numvec) 438221828Sgrehan{ 439221828Sgrehan struct vm_pptdev_msi pptmsi; 440221828Sgrehan 441221828Sgrehan bzero(&pptmsi, sizeof(pptmsi)); 442221828Sgrehan pptmsi.vcpu = vcpu; 443221828Sgrehan pptmsi.bus = bus; 444221828Sgrehan pptmsi.slot = slot; 445221828Sgrehan pptmsi.func = func; 446221828Sgrehan pptmsi.destcpu = destcpu; 447221828Sgrehan pptmsi.vector = vector; 448221828Sgrehan pptmsi.numvec = numvec; 449221828Sgrehan 450221828Sgrehan return (ioctl(ctx->fd, VM_PPTDEV_MSI, &pptmsi)); 451221828Sgrehan} 452221828Sgrehan 453234761Sgrehanint 454234761Sgrehanvm_setup_msix(struct vmctx *ctx, int vcpu, int bus, int slot, int func, 455234761Sgrehan int idx, uint32_t msg, uint32_t vector_control, uint64_t addr) 456234761Sgrehan{ 457234761Sgrehan struct vm_pptdev_msix pptmsix; 458234761Sgrehan 459234761Sgrehan bzero(&pptmsix, sizeof(pptmsix)); 460234761Sgrehan pptmsix.vcpu = vcpu; 461234761Sgrehan pptmsix.bus = bus; 462234761Sgrehan pptmsix.slot = slot; 463234761Sgrehan pptmsix.func = func; 464234761Sgrehan pptmsix.idx = idx; 465234761Sgrehan pptmsix.msg = msg; 466234761Sgrehan pptmsix.addr = addr; 467234761Sgrehan pptmsix.vector_control = vector_control; 468234761Sgrehan 469234761Sgrehan return ioctl(ctx->fd, VM_PPTDEV_MSIX, &pptmsix); 470234761Sgrehan} 471234761Sgrehan 472221828Sgrehanuint64_t * 473221828Sgrehanvm_get_stats(struct vmctx *ctx, int vcpu, struct timeval *ret_tv, 474221828Sgrehan int *ret_entries) 475221828Sgrehan{ 476221828Sgrehan int error; 477221828Sgrehan 478221828Sgrehan static struct vm_stats vmstats; 479221828Sgrehan 480221828Sgrehan vmstats.cpuid = vcpu; 481221828Sgrehan 482221828Sgrehan error = ioctl(ctx->fd, VM_STATS, &vmstats); 483221828Sgrehan if (error == 0) { 484221828Sgrehan if (ret_entries) 485221828Sgrehan *ret_entries = vmstats.num_entries; 486221828Sgrehan if (ret_tv) 487221828Sgrehan *ret_tv = vmstats.tv; 488221828Sgrehan return (vmstats.statbuf); 489221828Sgrehan } else 490221828Sgrehan return (NULL); 491221828Sgrehan} 492221828Sgrehan 493221828Sgrehanconst char * 494221828Sgrehanvm_get_stat_desc(struct vmctx *ctx, int index) 495221828Sgrehan{ 496221828Sgrehan static struct vm_stat_desc statdesc; 497221828Sgrehan 498221828Sgrehan statdesc.index = index; 499221828Sgrehan if (ioctl(ctx->fd, VM_STAT_DESC, &statdesc) == 0) 500221828Sgrehan return (statdesc.desc); 501221828Sgrehan else 502221828Sgrehan return (NULL); 503221828Sgrehan} 504221828Sgrehan 505221828Sgrehan/* 506221828Sgrehan * From Intel Vol 3a: 507221828Sgrehan * Table 9-1. IA-32 Processor States Following Power-up, Reset or INIT 508221828Sgrehan */ 509221828Sgrehanint 510221828Sgrehanvcpu_reset(struct vmctx *vmctx, int vcpu) 511221828Sgrehan{ 512221828Sgrehan int error; 513221828Sgrehan uint64_t rflags, rip, cr0, cr4, zero, desc_base, rdx; 514221828Sgrehan uint32_t desc_access, desc_limit; 515221828Sgrehan uint16_t sel; 516221828Sgrehan 517221828Sgrehan zero = 0; 518221828Sgrehan 519221828Sgrehan rflags = 0x2; 520221828Sgrehan error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RFLAGS, rflags); 521221828Sgrehan if (error) 522221828Sgrehan goto done; 523221828Sgrehan 524221828Sgrehan rip = 0xfff0; 525221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RIP, rip)) != 0) 526221828Sgrehan goto done; 527221828Sgrehan 528221828Sgrehan cr0 = CR0_NE; 529221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR0, cr0)) != 0) 530221828Sgrehan goto done; 531221828Sgrehan 532221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR3, zero)) != 0) 533221828Sgrehan goto done; 534221828Sgrehan 535239025Sneel cr4 = 0; 536221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR4, cr4)) != 0) 537221828Sgrehan goto done; 538221828Sgrehan 539221828Sgrehan /* 540221828Sgrehan * CS: present, r/w, accessed, 16-bit, byte granularity, usable 541221828Sgrehan */ 542221828Sgrehan desc_base = 0xffff0000; 543221828Sgrehan desc_limit = 0xffff; 544221828Sgrehan desc_access = 0x0093; 545221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_CS, 546221828Sgrehan desc_base, desc_limit, desc_access); 547221828Sgrehan if (error) 548221828Sgrehan goto done; 549221828Sgrehan 550221828Sgrehan sel = 0xf000; 551221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CS, sel)) != 0) 552221828Sgrehan goto done; 553221828Sgrehan 554221828Sgrehan /* 555221828Sgrehan * SS,DS,ES,FS,GS: present, r/w, accessed, 16-bit, byte granularity 556221828Sgrehan */ 557221828Sgrehan desc_base = 0; 558221828Sgrehan desc_limit = 0xffff; 559221828Sgrehan desc_access = 0x0093; 560221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_SS, 561221828Sgrehan desc_base, desc_limit, desc_access); 562221828Sgrehan if (error) 563221828Sgrehan goto done; 564221828Sgrehan 565221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_DS, 566221828Sgrehan desc_base, desc_limit, desc_access); 567221828Sgrehan if (error) 568221828Sgrehan goto done; 569221828Sgrehan 570221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_ES, 571221828Sgrehan desc_base, desc_limit, desc_access); 572221828Sgrehan if (error) 573221828Sgrehan goto done; 574221828Sgrehan 575221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_FS, 576221828Sgrehan desc_base, desc_limit, desc_access); 577221828Sgrehan if (error) 578221828Sgrehan goto done; 579221828Sgrehan 580221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GS, 581221828Sgrehan desc_base, desc_limit, desc_access); 582221828Sgrehan if (error) 583221828Sgrehan goto done; 584221828Sgrehan 585221828Sgrehan sel = 0; 586221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_SS, sel)) != 0) 587221828Sgrehan goto done; 588221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_DS, sel)) != 0) 589221828Sgrehan goto done; 590221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_ES, sel)) != 0) 591221828Sgrehan goto done; 592221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_FS, sel)) != 0) 593221828Sgrehan goto done; 594221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_GS, sel)) != 0) 595221828Sgrehan goto done; 596221828Sgrehan 597221828Sgrehan /* General purpose registers */ 598221828Sgrehan rdx = 0xf00; 599221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RAX, zero)) != 0) 600221828Sgrehan goto done; 601221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBX, zero)) != 0) 602221828Sgrehan goto done; 603221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RCX, zero)) != 0) 604221828Sgrehan goto done; 605221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDX, rdx)) != 0) 606221828Sgrehan goto done; 607221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSI, zero)) != 0) 608221828Sgrehan goto done; 609221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDI, zero)) != 0) 610221828Sgrehan goto done; 611221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBP, zero)) != 0) 612221828Sgrehan goto done; 613221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSP, zero)) != 0) 614221828Sgrehan goto done; 615221828Sgrehan 616221828Sgrehan /* GDTR, IDTR */ 617221828Sgrehan desc_base = 0; 618221828Sgrehan desc_limit = 0xffff; 619221828Sgrehan desc_access = 0; 620221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GDTR, 621221828Sgrehan desc_base, desc_limit, desc_access); 622221828Sgrehan if (error != 0) 623221828Sgrehan goto done; 624221828Sgrehan 625221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_IDTR, 626221828Sgrehan desc_base, desc_limit, desc_access); 627221828Sgrehan if (error != 0) 628221828Sgrehan goto done; 629221828Sgrehan 630221828Sgrehan /* TR */ 631221828Sgrehan desc_base = 0; 632221828Sgrehan desc_limit = 0xffff; 633221828Sgrehan desc_access = 0x0000008b; 634221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_TR, 0, 0, desc_access); 635221828Sgrehan if (error) 636221828Sgrehan goto done; 637221828Sgrehan 638221828Sgrehan sel = 0; 639221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_TR, sel)) != 0) 640221828Sgrehan goto done; 641221828Sgrehan 642221828Sgrehan /* LDTR */ 643221828Sgrehan desc_base = 0; 644221828Sgrehan desc_limit = 0xffff; 645221828Sgrehan desc_access = 0x00000082; 646221828Sgrehan error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_LDTR, desc_base, 647221828Sgrehan desc_limit, desc_access); 648221828Sgrehan if (error) 649221828Sgrehan goto done; 650221828Sgrehan 651221828Sgrehan sel = 0; 652221828Sgrehan if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_LDTR, 0)) != 0) 653221828Sgrehan goto done; 654221828Sgrehan 655221828Sgrehan /* XXX cr2, debug registers */ 656221828Sgrehan 657221828Sgrehan error = 0; 658221828Sgrehandone: 659221828Sgrehan return (error); 660221828Sgrehan} 661