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47c1c8c1 VP |
1 | /* |
2 | * QEMU HAXM support | |
3 | * | |
4 | * Copyright (c) 2011 Intel Corporation | |
5 | * Written by: | |
6 | * Jiang Yunhong<yunhong.jiang@intel.com> | |
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" | |
47c1c8c1 VP |
15 | #include "hax-i386.h" |
16 | ||
17 | /* | |
18 | * return 0 when success, -1 when driver not loaded, | |
19 | * other negative value for other failure | |
20 | */ | |
21 | static int hax_open_device(hax_fd *fd) | |
22 | { | |
23 | uint32_t errNum = 0; | |
24 | HANDLE hDevice; | |
25 | ||
26 | if (!fd) { | |
27 | return -2; | |
28 | } | |
29 | ||
30 | hDevice = CreateFile("\\\\.\\HAX", | |
31 | GENERIC_READ | GENERIC_WRITE, | |
32 | 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); | |
33 | ||
34 | if (hDevice == INVALID_HANDLE_VALUE) { | |
35 | fprintf(stderr, "Failed to open the HAX device!\n"); | |
36 | errNum = GetLastError(); | |
37 | if (errNum == ERROR_FILE_NOT_FOUND) { | |
38 | return -1; | |
39 | } | |
40 | return -2; | |
41 | } | |
42 | *fd = hDevice; | |
43 | return 0; | |
44 | } | |
45 | ||
46 | /* hax_fd hax_mod_open */ | |
47 | hax_fd hax_mod_open(void) | |
48 | { | |
49 | int ret; | |
50 | hax_fd fd = NULL; | |
51 | ||
52 | ret = hax_open_device(&fd); | |
53 | if (ret != 0) { | |
54 | fprintf(stderr, "Open HAX device failed\n"); | |
55 | } | |
56 | ||
57 | return fd; | |
58 | } | |
59 | ||
7a5235c9 | 60 | int hax_populate_ram(uint64_t va, uint64_t size) |
47c1c8c1 VP |
61 | { |
62 | int ret; | |
47c1c8c1 VP |
63 | HANDLE hDeviceVM; |
64 | DWORD dSize = 0; | |
65 | ||
66 | if (!hax_global.vm || !hax_global.vm->fd) { | |
67 | fprintf(stderr, "Allocate memory before vm create?\n"); | |
68 | return -EINVAL; | |
69 | } | |
70 | ||
47c1c8c1 | 71 | hDeviceVM = hax_global.vm->fd; |
7a5235c9 YN |
72 | if (hax_global.supports_64bit_ramblock) { |
73 | struct hax_ramblock_info ramblock = { | |
74 | .start_va = va, | |
75 | .size = size, | |
76 | .reserved = 0 | |
77 | }; | |
78 | ||
79 | ret = DeviceIoControl(hDeviceVM, | |
80 | HAX_VM_IOCTL_ADD_RAMBLOCK, | |
81 | &ramblock, sizeof(ramblock), NULL, 0, &dSize, | |
82 | (LPOVERLAPPED) NULL); | |
83 | } else { | |
84 | struct hax_alloc_ram_info info = { | |
85 | .size = (uint32_t) size, | |
86 | .pad = 0, | |
87 | .va = va | |
88 | }; | |
89 | ||
90 | ret = DeviceIoControl(hDeviceVM, | |
91 | HAX_VM_IOCTL_ALLOC_RAM, | |
92 | &info, sizeof(info), NULL, 0, &dSize, | |
93 | (LPOVERLAPPED) NULL); | |
94 | } | |
47c1c8c1 VP |
95 | |
96 | if (!ret) { | |
7a5235c9 YN |
97 | fprintf(stderr, "Failed to register RAM block: va=0x%" PRIx64 |
98 | ", size=0x%" PRIx64 ", method=%s\n", va, size, | |
99 | hax_global.supports_64bit_ramblock ? "new" : "legacy"); | |
47c1c8c1 VP |
100 | return ret; |
101 | } | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
106 | int hax_set_ram(uint64_t start_pa, uint32_t size, uint64_t host_va, int flags) | |
107 | { | |
108 | struct hax_set_ram_info info; | |
109 | HANDLE hDeviceVM = hax_global.vm->fd; | |
110 | DWORD dSize = 0; | |
111 | int ret; | |
112 | ||
113 | info.pa_start = start_pa; | |
114 | info.size = size; | |
115 | info.va = host_va; | |
116 | info.flags = (uint8_t) flags; | |
117 | ||
118 | ret = DeviceIoControl(hDeviceVM, HAX_VM_IOCTL_SET_RAM, | |
119 | &info, sizeof(info), NULL, 0, &dSize, | |
120 | (LPOVERLAPPED) NULL); | |
121 | ||
122 | if (!ret) { | |
123 | return -EFAULT; | |
124 | } else { | |
125 | return 0; | |
126 | } | |
127 | } | |
128 | ||
129 | int hax_capability(struct hax_state *hax, struct hax_capabilityinfo *cap) | |
130 | { | |
131 | int ret; | |
132 | HANDLE hDevice = hax->fd; /* handle to hax module */ | |
133 | DWORD dSize = 0; | |
134 | DWORD err = 0; | |
135 | ||
136 | if (hax_invalid_fd(hDevice)) { | |
137 | fprintf(stderr, "Invalid fd for hax device!\n"); | |
138 | return -ENODEV; | |
139 | } | |
140 | ||
141 | ret = DeviceIoControl(hDevice, HAX_IOCTL_CAPABILITY, NULL, 0, cap, | |
142 | sizeof(*cap), &dSize, (LPOVERLAPPED) NULL); | |
143 | ||
144 | if (!ret) { | |
145 | err = GetLastError(); | |
146 | if (err == ERROR_INSUFFICIENT_BUFFER || err == ERROR_MORE_DATA) { | |
147 | fprintf(stderr, "hax capability is too long to hold.\n"); | |
148 | } | |
149 | fprintf(stderr, "Failed to get Hax capability:%luu\n", err); | |
150 | return -EFAULT; | |
151 | } else { | |
152 | return 0; | |
153 | } | |
154 | } | |
155 | ||
156 | int hax_mod_version(struct hax_state *hax, struct hax_module_version *version) | |
157 | { | |
158 | int ret; | |
159 | HANDLE hDevice = hax->fd; /* handle to hax module */ | |
160 | DWORD dSize = 0; | |
161 | DWORD err = 0; | |
162 | ||
163 | if (hax_invalid_fd(hDevice)) { | |
164 | fprintf(stderr, "Invalid fd for hax device!\n"); | |
165 | return -ENODEV; | |
166 | } | |
167 | ||
168 | ret = DeviceIoControl(hDevice, | |
169 | HAX_IOCTL_VERSION, | |
170 | NULL, 0, | |
171 | version, sizeof(*version), &dSize, | |
172 | (LPOVERLAPPED) NULL); | |
173 | ||
174 | if (!ret) { | |
175 | err = GetLastError(); | |
176 | if (err == ERROR_INSUFFICIENT_BUFFER || err == ERROR_MORE_DATA) { | |
177 | fprintf(stderr, "hax module verion is too long to hold.\n"); | |
178 | } | |
179 | fprintf(stderr, "Failed to get Hax module version:%lu\n", err); | |
180 | return -EFAULT; | |
181 | } else { | |
182 | return 0; | |
183 | } | |
184 | } | |
185 | ||
186 | static char *hax_vm_devfs_string(int vm_id) | |
187 | { | |
188 | char *name; | |
189 | ||
190 | if (vm_id > MAX_VM_ID) { | |
191 | fprintf(stderr, "Too big VM id\n"); | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | #define HAX_VM_DEVFS "\\\\.\\hax_vmxx" | |
196 | name = g_strdup(HAX_VM_DEVFS); | |
197 | if (!name) { | |
198 | return NULL; | |
199 | } | |
200 | ||
201 | snprintf(name, sizeof HAX_VM_DEVFS, "\\\\.\\hax_vm%02d", vm_id); | |
202 | return name; | |
203 | } | |
204 | ||
205 | static char *hax_vcpu_devfs_string(int vm_id, int vcpu_id) | |
206 | { | |
207 | char *name; | |
208 | ||
209 | if (vm_id > MAX_VM_ID || vcpu_id > MAX_VCPU_ID) { | |
210 | fprintf(stderr, "Too big vm id %x or vcpu id %x\n", vm_id, vcpu_id); | |
211 | return NULL; | |
212 | } | |
213 | ||
214 | #define HAX_VCPU_DEVFS "\\\\.\\hax_vmxx_vcpuxx" | |
215 | name = g_strdup(HAX_VCPU_DEVFS); | |
216 | if (!name) { | |
217 | return NULL; | |
218 | } | |
219 | ||
220 | snprintf(name, sizeof HAX_VCPU_DEVFS, "\\\\.\\hax_vm%02d_vcpu%02d", | |
221 | vm_id, vcpu_id); | |
222 | return name; | |
223 | } | |
224 | ||
225 | int hax_host_create_vm(struct hax_state *hax, int *vmid) | |
226 | { | |
227 | int ret; | |
228 | int vm_id = 0; | |
229 | DWORD dSize = 0; | |
230 | ||
231 | if (hax_invalid_fd(hax->fd)) { | |
232 | return -EINVAL; | |
233 | } | |
234 | ||
235 | if (hax->vm) { | |
236 | return 0; | |
237 | } | |
238 | ||
239 | ret = DeviceIoControl(hax->fd, | |
240 | HAX_IOCTL_CREATE_VM, | |
241 | NULL, 0, &vm_id, sizeof(vm_id), &dSize, | |
242 | (LPOVERLAPPED) NULL); | |
243 | if (!ret) { | |
244 | fprintf(stderr, "Failed to create VM. Error code: %lu\n", | |
245 | GetLastError()); | |
246 | return -1; | |
247 | } | |
248 | *vmid = vm_id; | |
249 | return 0; | |
250 | } | |
251 | ||
252 | hax_fd hax_host_open_vm(struct hax_state *hax, int vm_id) | |
253 | { | |
254 | char *vm_name = NULL; | |
255 | hax_fd hDeviceVM; | |
256 | ||
257 | vm_name = hax_vm_devfs_string(vm_id); | |
258 | if (!vm_name) { | |
259 | fprintf(stderr, "Failed to open VM. VM name is null\n"); | |
260 | return INVALID_HANDLE_VALUE; | |
261 | } | |
262 | ||
263 | hDeviceVM = CreateFile(vm_name, | |
264 | GENERIC_READ | GENERIC_WRITE, | |
265 | 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); | |
266 | if (hDeviceVM == INVALID_HANDLE_VALUE) { | |
267 | fprintf(stderr, "Open the vm device error:%s, ec:%lu\n", | |
268 | vm_name, GetLastError()); | |
269 | } | |
270 | ||
271 | g_free(vm_name); | |
272 | return hDeviceVM; | |
273 | } | |
274 | ||
275 | int hax_notify_qemu_version(hax_fd vm_fd, struct hax_qemu_version *qversion) | |
276 | { | |
277 | int ret; | |
278 | DWORD dSize = 0; | |
279 | if (hax_invalid_fd(vm_fd)) { | |
280 | return -EINVAL; | |
281 | } | |
282 | ret = DeviceIoControl(vm_fd, | |
283 | HAX_VM_IOCTL_NOTIFY_QEMU_VERSION, | |
284 | qversion, sizeof(struct hax_qemu_version), | |
285 | NULL, 0, &dSize, (LPOVERLAPPED) NULL); | |
286 | if (!ret) { | |
287 | fprintf(stderr, "Failed to notify qemu API version\n"); | |
288 | return -1; | |
289 | } | |
290 | return 0; | |
291 | } | |
292 | ||
293 | int hax_host_create_vcpu(hax_fd vm_fd, int vcpuid) | |
294 | { | |
295 | int ret; | |
296 | DWORD dSize = 0; | |
297 | ||
298 | ret = DeviceIoControl(vm_fd, | |
299 | HAX_VM_IOCTL_VCPU_CREATE, | |
300 | &vcpuid, sizeof(vcpuid), NULL, 0, &dSize, | |
301 | (LPOVERLAPPED) NULL); | |
302 | if (!ret) { | |
303 | fprintf(stderr, "Failed to create vcpu %x\n", vcpuid); | |
304 | return -1; | |
305 | } | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
310 | hax_fd hax_host_open_vcpu(int vmid, int vcpuid) | |
311 | { | |
312 | char *devfs_path = NULL; | |
313 | hax_fd hDeviceVCPU; | |
314 | ||
315 | devfs_path = hax_vcpu_devfs_string(vmid, vcpuid); | |
316 | if (!devfs_path) { | |
317 | fprintf(stderr, "Failed to get the devfs\n"); | |
318 | return INVALID_HANDLE_VALUE; | |
319 | } | |
320 | ||
321 | hDeviceVCPU = CreateFile(devfs_path, | |
322 | GENERIC_READ | GENERIC_WRITE, | |
323 | 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, | |
324 | NULL); | |
325 | ||
326 | if (hDeviceVCPU == INVALID_HANDLE_VALUE) { | |
327 | fprintf(stderr, "Failed to open the vcpu devfs\n"); | |
328 | } | |
329 | g_free(devfs_path); | |
330 | return hDeviceVCPU; | |
331 | } | |
332 | ||
333 | int hax_host_setup_vcpu_channel(struct hax_vcpu_state *vcpu) | |
334 | { | |
335 | hax_fd hDeviceVCPU = vcpu->fd; | |
336 | int ret; | |
337 | struct hax_tunnel_info info; | |
338 | DWORD dSize = 0; | |
339 | ||
340 | ret = DeviceIoControl(hDeviceVCPU, | |
341 | HAX_VCPU_IOCTL_SETUP_TUNNEL, | |
342 | NULL, 0, &info, sizeof(info), &dSize, | |
343 | (LPOVERLAPPED) NULL); | |
344 | if (!ret) { | |
345 | fprintf(stderr, "Failed to setup the hax tunnel\n"); | |
346 | return -1; | |
347 | } | |
348 | ||
349 | if (!valid_hax_tunnel_size(info.size)) { | |
350 | fprintf(stderr, "Invalid hax tunnel size %x\n", info.size); | |
351 | ret = -EINVAL; | |
352 | return ret; | |
353 | } | |
354 | vcpu->tunnel = (struct hax_tunnel *) (intptr_t) (info.va); | |
355 | vcpu->iobuf = (unsigned char *) (intptr_t) (info.io_va); | |
356 | return 0; | |
357 | } | |
358 | ||
359 | int hax_vcpu_run(struct hax_vcpu_state *vcpu) | |
360 | { | |
361 | int ret; | |
362 | HANDLE hDeviceVCPU = vcpu->fd; | |
363 | DWORD dSize = 0; | |
364 | ||
365 | ret = DeviceIoControl(hDeviceVCPU, | |
366 | HAX_VCPU_IOCTL_RUN, | |
367 | NULL, 0, NULL, 0, &dSize, (LPOVERLAPPED) NULL); | |
368 | if (!ret) { | |
369 | return -EFAULT; | |
370 | } else { | |
371 | return 0; | |
372 | } | |
373 | } | |
374 | ||
375 | int hax_sync_fpu(CPUArchState *env, struct fx_layout *fl, int set) | |
376 | { | |
377 | int ret; | |
378 | hax_fd fd; | |
379 | HANDLE hDeviceVCPU; | |
380 | DWORD dSize = 0; | |
381 | ||
382 | fd = hax_vcpu_get_fd(env); | |
383 | if (hax_invalid_fd(fd)) { | |
384 | return -1; | |
385 | } | |
386 | ||
387 | hDeviceVCPU = fd; | |
388 | ||
389 | if (set) { | |
390 | ret = DeviceIoControl(hDeviceVCPU, | |
391 | HAX_VCPU_IOCTL_SET_FPU, | |
392 | fl, sizeof(*fl), NULL, 0, &dSize, | |
393 | (LPOVERLAPPED) NULL); | |
394 | } else { | |
395 | ret = DeviceIoControl(hDeviceVCPU, | |
396 | HAX_VCPU_IOCTL_GET_FPU, | |
397 | NULL, 0, fl, sizeof(*fl), &dSize, | |
398 | (LPOVERLAPPED) NULL); | |
399 | } | |
400 | if (!ret) { | |
401 | return -EFAULT; | |
402 | } else { | |
403 | return 0; | |
404 | } | |
405 | } | |
406 | ||
407 | int hax_sync_msr(CPUArchState *env, struct hax_msr_data *msrs, int set) | |
408 | { | |
409 | int ret; | |
410 | hax_fd fd; | |
411 | HANDLE hDeviceVCPU; | |
412 | DWORD dSize = 0; | |
413 | ||
414 | fd = hax_vcpu_get_fd(env); | |
415 | if (hax_invalid_fd(fd)) { | |
416 | return -1; | |
417 | } | |
418 | hDeviceVCPU = fd; | |
419 | ||
420 | if (set) { | |
421 | ret = DeviceIoControl(hDeviceVCPU, | |
422 | HAX_VCPU_IOCTL_SET_MSRS, | |
423 | msrs, sizeof(*msrs), | |
424 | msrs, sizeof(*msrs), &dSize, (LPOVERLAPPED) NULL); | |
425 | } else { | |
426 | ret = DeviceIoControl(hDeviceVCPU, | |
427 | HAX_VCPU_IOCTL_GET_MSRS, | |
428 | msrs, sizeof(*msrs), | |
429 | msrs, sizeof(*msrs), &dSize, (LPOVERLAPPED) NULL); | |
430 | } | |
431 | if (!ret) { | |
432 | return -EFAULT; | |
433 | } else { | |
434 | return 0; | |
435 | } | |
436 | } | |
437 | ||
438 | int hax_sync_vcpu_state(CPUArchState *env, struct vcpu_state_t *state, int set) | |
439 | { | |
440 | int ret; | |
441 | hax_fd fd; | |
442 | HANDLE hDeviceVCPU; | |
443 | DWORD dSize; | |
444 | ||
445 | fd = hax_vcpu_get_fd(env); | |
446 | if (hax_invalid_fd(fd)) { | |
447 | return -1; | |
448 | } | |
449 | ||
450 | hDeviceVCPU = fd; | |
451 | ||
452 | if (set) { | |
453 | ret = DeviceIoControl(hDeviceVCPU, | |
454 | HAX_VCPU_SET_REGS, | |
455 | state, sizeof(*state), | |
456 | NULL, 0, &dSize, (LPOVERLAPPED) NULL); | |
457 | } else { | |
458 | ret = DeviceIoControl(hDeviceVCPU, | |
459 | HAX_VCPU_GET_REGS, | |
460 | NULL, 0, | |
461 | state, sizeof(*state), &dSize, | |
462 | (LPOVERLAPPED) NULL); | |
463 | } | |
464 | if (!ret) { | |
465 | return -EFAULT; | |
466 | } else { | |
467 | return 0; | |
468 | } | |
469 | } | |
470 | ||
471 | int hax_inject_interrupt(CPUArchState *env, int vector) | |
472 | { | |
473 | int ret; | |
474 | hax_fd fd; | |
475 | HANDLE hDeviceVCPU; | |
476 | DWORD dSize; | |
477 | ||
478 | fd = hax_vcpu_get_fd(env); | |
479 | if (hax_invalid_fd(fd)) { | |
480 | return -1; | |
481 | } | |
482 | ||
483 | hDeviceVCPU = fd; | |
484 | ||
485 | ret = DeviceIoControl(hDeviceVCPU, | |
486 | HAX_VCPU_IOCTL_INTERRUPT, | |
487 | &vector, sizeof(vector), NULL, 0, &dSize, | |
488 | (LPOVERLAPPED) NULL); | |
489 | if (!ret) { | |
490 | return -EFAULT; | |
491 | } else { | |
492 | return 0; | |
493 | } | |
494 | } |