target/i386/hax-windows.c

   1 /*
   2  * QEMU HAXM support
   3  *
   4  * Copyright (c) 2011 Intel Corporation
   5  *  Written by:
   6  *  Jiang Yunhong<[email protected]>
   7  *
   8  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   9  * See the COPYING file in the top-level directory.
  10  *
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "cpu.h"
  15 #include "exec/exec-all.h"
  16 #include "hax-i386.h"
  17
  18 /*
  19  * return 0 when success, -1 when driver not loaded,
  20  * other negative value for other failure
  21  */
  22 static int hax_open_device(hax_fd *fd)
  23 {
  24     uint32_t errNum = 0;
  25     HANDLE hDevice;
  26
  27     if (!fd) {
  28         return -2;
  29     }
  30
  31     hDevice = CreateFile("\\\\.\\HAX",
  32                          GENERIC_READ | GENERIC_WRITE,
  33                          0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
  34
  35     if (hDevice == INVALID_HANDLE_VALUE) {
  36         fprintf(stderr, "Failed to open the HAX device!\n");
  37         errNum = GetLastError();
  38         if (errNum == ERROR_FILE_NOT_FOUND) {
  39             return -1;
  40         }
  41         return -2;
  42     }
  43     *fd = hDevice;
  44     return 0;
  45 }
  46
  47 /* hax_fd hax_mod_open */
  48  hax_fd hax_mod_open(void)
  49 {
  50     int ret;
  51     hax_fd fd = NULL;
  52
  53     ret = hax_open_device(&fd);
  54     if (ret != 0) {
  55         fprintf(stderr, "Open HAX device failed\n");
  56     }
  57
  58     return fd;
  59 }
  60
  61 int hax_populate_ram(uint64_t va, uint32_t size)
  62 {
  63     int ret;
  64     struct hax_alloc_ram_info info;
  65     HANDLE hDeviceVM;
  66     DWORD dSize = 0;
  67
  68     if (!hax_global.vm || !hax_global.vm->fd) {
  69         fprintf(stderr, "Allocate memory before vm create?\n");
  70         return -EINVAL;
  71     }
  72
  73     info.size = size;
  74     info.va = va;
  75
  76     hDeviceVM = hax_global.vm->fd;
  77
  78     ret = DeviceIoControl(hDeviceVM,
  79                           HAX_VM_IOCTL_ALLOC_RAM,
  80                           &info, sizeof(info), NULL, 0, &dSize,
  81                           (LPOVERLAPPED) NULL);
  82
  83     if (!ret) {
  84         fprintf(stderr, "Failed to allocate %x memory\n", size);
  85         return ret;
  86     }
  87
  88     return 0;
  89 }
  90
  91 int hax_set_ram(uint64_t start_pa, uint32_t size, uint64_t host_va, int flags)
  92 {
  93     struct hax_set_ram_info info;
  94     HANDLE hDeviceVM = hax_global.vm->fd;
  95     DWORD dSize = 0;
  96     int ret;
  97
  98     info.pa_start = start_pa;
  99     info.size = size;
 100     info.va = host_va;
 101     info.flags = (uint8_t) flags;
 102
 103     ret = DeviceIoControl(hDeviceVM, HAX_VM_IOCTL_SET_RAM,
 104                           &info, sizeof(info), NULL, 0, &dSize,
 105                           (LPOVERLAPPED) NULL);
 106
 107     if (!ret) {
 108         return -EFAULT;
 109     } else {
 110         return 0;
 111     }
 112 }
 113
 114 int hax_capability(struct hax_state *hax, struct hax_capabilityinfo *cap)
 115 {
 116     int ret;
 117     HANDLE hDevice = hax->fd;        /* handle to hax module */
 118     DWORD dSize = 0;
 119     DWORD err = 0;
 120
 121     if (hax_invalid_fd(hDevice)) {
 122         fprintf(stderr, "Invalid fd for hax device!\n");
 123         return -ENODEV;
 124     }
 125
 126     ret = DeviceIoControl(hDevice, HAX_IOCTL_CAPABILITY, NULL, 0, cap,
 127                           sizeof(*cap), &dSize, (LPOVERLAPPED) NULL);
 128
 129     if (!ret) {
 130         err = GetLastError();
 131         if (err == ERROR_INSUFFICIENT_BUFFER || err == ERROR_MORE_DATA) {
 132             fprintf(stderr, "hax capability is too long to hold.\n");
 133         }
 134         fprintf(stderr, "Failed to get Hax capability:%luu\n", err);
 135         return -EFAULT;
 136     } else {
 137         return 0;
 138     }
 139 }
 140
 141 int hax_mod_version(struct hax_state *hax, struct hax_module_version *version)
 142 {
 143     int ret;
 144     HANDLE hDevice = hax->fd; /* handle to hax module */
 145     DWORD dSize = 0;
 146     DWORD err = 0;
 147
 148     if (hax_invalid_fd(hDevice)) {
 149         fprintf(stderr, "Invalid fd for hax device!\n");
 150         return -ENODEV;
 151     }
 152
 153     ret = DeviceIoControl(hDevice,
 154                           HAX_IOCTL_VERSION,
 155                           NULL, 0,
 156                           version, sizeof(*version), &dSize,
 157                           (LPOVERLAPPED) NULL);
 158
 159     if (!ret) {
 160         err = GetLastError();
 161         if (err == ERROR_INSUFFICIENT_BUFFER || err == ERROR_MORE_DATA) {
 162             fprintf(stderr, "hax module verion is too long to hold.\n");
 163         }
 164         fprintf(stderr, "Failed to get Hax module version:%lu\n", err);
 165         return -EFAULT;
 166     } else {
 167         return 0;
 168     }
 169 }
 170
 171 static char *hax_vm_devfs_string(int vm_id)
 172 {
 173     char *name;
 174
 175     if (vm_id > MAX_VM_ID) {
 176         fprintf(stderr, "Too big VM id\n");
 177         return NULL;
 178     }
 179
 180 #define HAX_VM_DEVFS "\\\\.\\hax_vmxx"
 181     name = g_strdup(HAX_VM_DEVFS);
 182     if (!name) {
 183         return NULL;
 184     }
 185
 186     snprintf(name, sizeof HAX_VM_DEVFS, "\\\\.\\hax_vm%02d", vm_id);
 187     return name;
 188 }
 189
 190 static char *hax_vcpu_devfs_string(int vm_id, int vcpu_id)
 191 {
 192     char *name;
 193
 194     if (vm_id > MAX_VM_ID || vcpu_id > MAX_VCPU_ID) {
 195         fprintf(stderr, "Too big vm id %x or vcpu id %x\n", vm_id, vcpu_id);
 196         return NULL;
 197     }
 198
 199 #define HAX_VCPU_DEVFS "\\\\.\\hax_vmxx_vcpuxx"
 200     name = g_strdup(HAX_VCPU_DEVFS);
 201     if (!name) {
 202         return NULL;
 203     }
 204
 205     snprintf(name, sizeof HAX_VCPU_DEVFS, "\\\\.\\hax_vm%02d_vcpu%02d",
 206              vm_id, vcpu_id);
 207     return name;
 208 }
 209
 210 int hax_host_create_vm(struct hax_state *hax, int *vmid)
 211 {
 212     int ret;
 213     int vm_id = 0;
 214     DWORD dSize = 0;
 215
 216     if (hax_invalid_fd(hax->fd)) {
 217         return -EINVAL;
 218     }
 219
 220     if (hax->vm) {
 221         return 0;
 222     }
 223
 224     ret = DeviceIoControl(hax->fd,
 225                           HAX_IOCTL_CREATE_VM,
 226                           NULL, 0, &vm_id, sizeof(vm_id), &dSize,
 227                           (LPOVERLAPPED) NULL);
 228     if (!ret) {
 229         fprintf(stderr, "Failed to create VM. Error code: %lu\n",
 230                 GetLastError());
 231         return -1;
 232     }
 233     *vmid = vm_id;
 234     return 0;
 235 }
 236
 237 hax_fd hax_host_open_vm(struct hax_state *hax, int vm_id)
 238 {
 239     char *vm_name = NULL;
 240     hax_fd hDeviceVM;
 241
 242     vm_name = hax_vm_devfs_string(vm_id);
 243     if (!vm_name) {
 244         fprintf(stderr, "Failed to open VM. VM name is null\n");
 245         return INVALID_HANDLE_VALUE;
 246     }
 247
 248     hDeviceVM = CreateFile(vm_name,
 249                            GENERIC_READ | GENERIC_WRITE,
 250                            0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
 251     if (hDeviceVM == INVALID_HANDLE_VALUE) {
 252         fprintf(stderr, "Open the vm device error:%s, ec:%lu\n",
 253                 vm_name, GetLastError());
 254     }
 255
 256     g_free(vm_name);
 257     return hDeviceVM;
 258 }
 259
 260 int hax_notify_qemu_version(hax_fd vm_fd, struct hax_qemu_version *qversion)
 261 {
 262     int ret;
 263     DWORD dSize = 0;
 264     if (hax_invalid_fd(vm_fd)) {
 265         return -EINVAL;
 266     }
 267     ret = DeviceIoControl(vm_fd,
 268                           HAX_VM_IOCTL_NOTIFY_QEMU_VERSION,
 269                           qversion, sizeof(struct hax_qemu_version),
 270                           NULL, 0, &dSize, (LPOVERLAPPED) NULL);
 271     if (!ret) {
 272         fprintf(stderr, "Failed to notify qemu API version\n");
 273         return -1;
 274     }
 275     return 0;
 276 }
 277
 278 int hax_host_create_vcpu(hax_fd vm_fd, int vcpuid)
 279 {
 280     int ret;
 281     DWORD dSize = 0;
 282
 283     ret = DeviceIoControl(vm_fd,
 284                           HAX_VM_IOCTL_VCPU_CREATE,
 285                           &vcpuid, sizeof(vcpuid), NULL, 0, &dSize,
 286                           (LPOVERLAPPED) NULL);
 287     if (!ret) {
 288         fprintf(stderr, "Failed to create vcpu %x\n", vcpuid);
 289         return -1;
 290     }
 291
 292     return 0;
 293 }
 294
 295 hax_fd hax_host_open_vcpu(int vmid, int vcpuid)
 296 {
 297     char *devfs_path = NULL;
 298     hax_fd hDeviceVCPU;
 299
 300     devfs_path = hax_vcpu_devfs_string(vmid, vcpuid);
 301     if (!devfs_path) {
 302         fprintf(stderr, "Failed to get the devfs\n");
 303         return INVALID_HANDLE_VALUE;
 304     }
 305
 306     hDeviceVCPU = CreateFile(devfs_path,
 307                              GENERIC_READ | GENERIC_WRITE,
 308                              0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
 309                              NULL);
 310
 311     if (hDeviceVCPU == INVALID_HANDLE_VALUE) {
 312         fprintf(stderr, "Failed to open the vcpu devfs\n");
 313     }
 314     g_free(devfs_path);
 315     return hDeviceVCPU;
 316 }
 317
 318 int hax_host_setup_vcpu_channel(struct hax_vcpu_state *vcpu)
 319 {
 320     hax_fd hDeviceVCPU = vcpu->fd;
 321     int ret;
 322     struct hax_tunnel_info info;
 323     DWORD dSize = 0;
 324
 325     ret = DeviceIoControl(hDeviceVCPU,
 326                           HAX_VCPU_IOCTL_SETUP_TUNNEL,
 327                           NULL, 0, &info, sizeof(info), &dSize,
 328                           (LPOVERLAPPED) NULL);
 329     if (!ret) {
 330         fprintf(stderr, "Failed to setup the hax tunnel\n");
 331         return -1;
 332     }
 333
 334     if (!valid_hax_tunnel_size(info.size)) {
 335         fprintf(stderr, "Invalid hax tunnel size %x\n", info.size);
 336         ret = -EINVAL;
 337         return ret;
 338     }
 339     vcpu->tunnel = (struct hax_tunnel *) (intptr_t) (info.va);
 340     vcpu->iobuf = (unsigned char *) (intptr_t) (info.io_va);
 341     return 0;
 342 }
 343
 344 int hax_vcpu_run(struct hax_vcpu_state *vcpu)
 345 {
 346     int ret;
 347     HANDLE hDeviceVCPU = vcpu->fd;
 348     DWORD dSize = 0;
 349
 350     ret = DeviceIoControl(hDeviceVCPU,
 351                           HAX_VCPU_IOCTL_RUN,
 352                           NULL, 0, NULL, 0, &dSize, (LPOVERLAPPED) NULL);
 353     if (!ret) {
 354         return -EFAULT;
 355     } else {
 356         return 0;
 357     }
 358 }
 359
 360 int hax_sync_fpu(CPUArchState *env, struct fx_layout *fl, int set)
 361 {
 362     int ret;
 363     hax_fd fd;
 364     HANDLE hDeviceVCPU;
 365     DWORD dSize = 0;
 366
 367     fd = hax_vcpu_get_fd(env);
 368     if (hax_invalid_fd(fd)) {
 369         return -1;
 370     }
 371
 372     hDeviceVCPU = fd;
 373
 374     if (set) {
 375         ret = DeviceIoControl(hDeviceVCPU,
 376                               HAX_VCPU_IOCTL_SET_FPU,
 377                               fl, sizeof(*fl), NULL, 0, &dSize,
 378                               (LPOVERLAPPED) NULL);
 379     } else {
 380         ret = DeviceIoControl(hDeviceVCPU,
 381                               HAX_VCPU_IOCTL_GET_FPU,
 382                               NULL, 0, fl, sizeof(*fl), &dSize,
 383                               (LPOVERLAPPED) NULL);
 384     }
 385     if (!ret) {
 386         return -EFAULT;
 387     } else {
 388         return 0;
 389     }
 390 }
 391
 392 int hax_sync_msr(CPUArchState *env, struct hax_msr_data *msrs, int set)
 393 {
 394     int ret;
 395     hax_fd fd;
 396     HANDLE hDeviceVCPU;
 397     DWORD dSize = 0;
 398
 399     fd = hax_vcpu_get_fd(env);
 400     if (hax_invalid_fd(fd)) {
 401         return -1;
 402     }
 403     hDeviceVCPU = fd;
 404
 405     if (set) {
 406         ret = DeviceIoControl(hDeviceVCPU,
 407                               HAX_VCPU_IOCTL_SET_MSRS,
 408                               msrs, sizeof(*msrs),
 409                               msrs, sizeof(*msrs), &dSize, (LPOVERLAPPED) NULL);
 410     } else {
 411         ret = DeviceIoControl(hDeviceVCPU,
 412                               HAX_VCPU_IOCTL_GET_MSRS,
 413                               msrs, sizeof(*msrs),
 414                               msrs, sizeof(*msrs), &dSize, (LPOVERLAPPED) NULL);
 415     }
 416     if (!ret) {
 417         return -EFAULT;
 418     } else {
 419         return 0;
 420     }
 421 }
 422
 423 int hax_sync_vcpu_state(CPUArchState *env, struct vcpu_state_t *state, int set)
 424 {
 425     int ret;
 426     hax_fd fd;
 427     HANDLE hDeviceVCPU;
 428     DWORD dSize;
 429
 430     fd = hax_vcpu_get_fd(env);
 431     if (hax_invalid_fd(fd)) {
 432         return -1;
 433     }
 434
 435     hDeviceVCPU = fd;
 436
 437     if (set) {
 438         ret = DeviceIoControl(hDeviceVCPU,
 439                               HAX_VCPU_SET_REGS,
 440                               state, sizeof(*state),
 441                               NULL, 0, &dSize, (LPOVERLAPPED) NULL);
 442     } else {
 443         ret = DeviceIoControl(hDeviceVCPU,
 444                               HAX_VCPU_GET_REGS,
 445                               NULL, 0,
 446                               state, sizeof(*state), &dSize,
 447                               (LPOVERLAPPED) NULL);
 448     }
 449     if (!ret) {
 450         return -EFAULT;
 451     } else {
 452         return 0;
 453     }
 454 }
 455
 456 int hax_inject_interrupt(CPUArchState *env, int vector)
 457 {
 458     int ret;
 459     hax_fd fd;
 460     HANDLE hDeviceVCPU;
 461     DWORD dSize;
 462
 463     fd = hax_vcpu_get_fd(env);
 464     if (hax_invalid_fd(fd)) {
 465         return -1;
 466     }
 467
 468     hDeviceVCPU = fd;
 469
 470     ret = DeviceIoControl(hDeviceVCPU,
 471                           HAX_VCPU_IOCTL_INTERRUPT,
 472                           &vector, sizeof(vector), NULL, 0, &dSize,
 473                           (LPOVERLAPPED) NULL);
 474     if (!ret) {
 475         return -EFAULT;
 476     } else {
 477         return 0;
 478     }
 479 }