1 /* $NetBSD: hypercalls.h,v 1.2 2020/04/25 15:26:16 bouyer Exp $ */
2 /******************************************************************************
3 * hypercall.h
4 *
5 * Linux-specific hypervisor handling.
6 *
7 * Copyright (c) 2002-2004, K A Fraser
8 *
9 * 64-bit updates:
10 * Benjamin Liu <benjamin.liu@intel.com>
11 * Jun Nakajima <jun.nakajima@intel.com>
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License version 2
15 * as published by the Free Software Foundation; or, when distributed
16 * separately from the Linux kernel or incorporated into other
17 * software packages, subject to the following license:
18 *
19 * Permission is hereby granted, free of charge, to any person obtaining a copy
20 * of this source file (the "Software"), to deal in the Software without
21 * restriction, including without limitation the rights to use, copy, modify,
22 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
23 * and to permit persons to whom the Software is furnished to do so, subject to
24 * the following conditions:
25 *
26 * The above copyright notice and this permission notice shall be included in
27 * all copies or substantial portions of the Software.
28 *
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
30 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
31 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
32 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
33 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
34 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
35 * IN THE SOFTWARE.
36 */
37
38 #ifndef __HYPERCALL_H__
39 #define __HYPERCALL_H__
40
41 #define __STR(x) #x
42 #define STR(x) __STR(x)
43
44 #define HYPERCALL_STR(name) \
45 "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"
46
47 #define _hypercall0(type, name) \
48 ({ \
49 long __res; \
50 asm volatile ( \
51 HYPERCALL_STR(name) \
52 : "=a" (__res) \
53 : \
54 : "memory" ); \
55 (type)__res; \
56 })
57
58 #define _hypercall1(type, name, a1) \
59 ({ \
60 long __res, __ign1; \
61 asm volatile ( \
62 HYPERCALL_STR(name) \
63 : "=a" (__res), "=D" (__ign1) \
64 : "1" ((long)(a1)) \
65 : "memory" ); \
66 (type)__res; \
67 })
68
69 #define _hypercall2(type, name, a1, a2) \
70 ({ \
71 long __res, __ign1, __ign2; \
72 asm volatile ( \
73 HYPERCALL_STR(name) \
74 : "=a" (__res), "=D" (__ign1), "=S" (__ign2) \
75 : "1" ((long)(a1)), "2" ((long)(a2)) \
76 : "memory" ); \
77 (type)__res; \
78 })
79
80 #define _hypercall3(type, name, a1, a2, a3) \
81 ({ \
82 long __res, __ign1, __ign2, __ign3; \
83 asm volatile ( \
84 HYPERCALL_STR(name) \
85 : "=a" (__res), "=D" (__ign1), "=S" (__ign2), \
86 "=d" (__ign3) \
87 : "1" ((long)(a1)), "2" ((long)(a2)), \
88 "3" ((long)(a3)) \
89 : "memory" ); \
90 (type)__res; \
91 })
92
93 #define _hypercall4(type, name, a1, a2, a3, a4) \
94 ({ \
95 long __res, __ign1, __ign2, __ign3; \
96 asm volatile ( \
97 "movq %7,%%r10; " \
98 HYPERCALL_STR(name) \
99 : "=a" (__res), "=D" (__ign1), "=S" (__ign2), \
100 "=d" (__ign3) \
101 : "1" ((long)(a1)), "2" ((long)(a2)), \
102 "3" ((long)(a3)), "g" ((long)(a4)) \
103 : "memory", "r10" ); \
104 (type)__res; \
105 })
106
107 #define _hypercall5(type, name, a1, a2, a3, a4, a5) \
108 ({ \
109 long __res, __ign1, __ign2, __ign3; \
110 asm volatile ( \
111 "movq %7,%%r10; movq %8,%%r8; " \
112 HYPERCALL_STR(name) \
113 : "=a" (__res), "=D" (__ign1), "=S" (__ign2), \
114 "=d" (__ign3) \
115 : "1" ((long)(a1)), "2" ((long)(a2)), \
116 "3" ((long)(a3)), "g" ((long)(a4)), \
117 "g" ((long)(a5)) \
118 : "memory", "r10", "r8" ); \
119 (type)__res; \
120 })
121
122 static inline int
HYPERVISOR_set_trap_table(trap_info_t * table)123 HYPERVISOR_set_trap_table(
124 trap_info_t *table)
125 {
126 return _hypercall1(int, set_trap_table, table);
127 }
128
129 static inline int
HYPERVISOR_mmu_update(mmu_update_t * req,int count,int * success_count,domid_t domid)130 HYPERVISOR_mmu_update(
131 mmu_update_t *req, int count, int *success_count, domid_t domid)
132 {
133 return _hypercall4(int, mmu_update, req, count, success_count, domid);
134 }
135
136 static inline int
HYPERVISOR_mmuext_op(struct mmuext_op * op,int count,int * success_count,domid_t domid)137 HYPERVISOR_mmuext_op(
138 struct mmuext_op *op, int count, int *success_count, domid_t domid)
139 {
140 return _hypercall4(int, mmuext_op, op, count, success_count, domid);
141 }
142
143 static inline int
HYPERVISOR_set_gdt(unsigned long * frame_list,int entries)144 HYPERVISOR_set_gdt(
145 unsigned long *frame_list, int entries)
146 {
147 return _hypercall2(int, set_gdt, frame_list, entries);
148 }
149
150 static inline int
HYPERVISOR_stack_switch(unsigned long ss,unsigned long esp)151 HYPERVISOR_stack_switch(
152 unsigned long ss, unsigned long esp)
153 {
154 return _hypercall2(int, stack_switch, ss, esp);
155 }
156
157 static inline int
HYPERVISOR_set_callbacks(unsigned long event_address,unsigned long failsafe_address,unsigned long syscall_address)158 HYPERVISOR_set_callbacks(
159 unsigned long event_address, unsigned long failsafe_address,
160 unsigned long syscall_address)
161 {
162 return _hypercall3(int, set_callbacks,
163 event_address, failsafe_address, syscall_address);
164 }
165
166 static inline int
HYPERVISOR_fpu_taskswitch(int set)167 HYPERVISOR_fpu_taskswitch(
168 int set)
169 {
170 return _hypercall1(int, fpu_taskswitch, set);
171 }
172
173 static inline int
HYPERVISOR_sched_op_compat(int cmd,unsigned long arg)174 HYPERVISOR_sched_op_compat(
175 int cmd, unsigned long arg)
176 {
177 return _hypercall2(int, sched_op_compat, cmd, arg);
178 }
179
180 static inline int
HYPERVISOR_sched_op(int cmd,void * arg)181 HYPERVISOR_sched_op(
182 int cmd, void *arg)
183 {
184 return _hypercall2(int, sched_op, cmd, arg);
185 }
186
187 static inline long
HYPERVISOR_set_timer_op(u64 timeout)188 HYPERVISOR_set_timer_op(
189 u64 timeout)
190 {
191 return _hypercall1(long, set_timer_op, timeout);
192 }
193
194 static inline int
HYPERVISOR_platform_op(struct xen_platform_op * platform_op)195 HYPERVISOR_platform_op(
196 struct xen_platform_op *platform_op)
197 {
198 platform_op->interface_version = XENPF_INTERFACE_VERSION;
199 return _hypercall1(int, platform_op, platform_op);
200 }
201
202 static inline int
HYPERVISOR_set_debugreg(int reg,unsigned long value)203 HYPERVISOR_set_debugreg(
204 int reg, unsigned long value)
205 {
206 return _hypercall2(int, set_debugreg, reg, value);
207 }
208
209 static inline unsigned long
HYPERVISOR_get_debugreg(int reg)210 HYPERVISOR_get_debugreg(
211 int reg)
212 {
213 return _hypercall1(unsigned long, get_debugreg, reg);
214 }
215
216 static inline int
HYPERVISOR_update_descriptor(unsigned long ma,unsigned long word)217 HYPERVISOR_update_descriptor(
218 unsigned long ma, unsigned long word)
219 {
220 return _hypercall2(int, update_descriptor, ma, word);
221 }
222
223 static inline int
HYPERVISOR_memory_op(unsigned int cmd,void * arg)224 HYPERVISOR_memory_op(
225 unsigned int cmd, void *arg)
226 {
227 return _hypercall2(int, memory_op, cmd, arg);
228 }
229
230 static inline int
HYPERVISOR_multicall(multicall_entry_t * call_list,int nr_calls)231 HYPERVISOR_multicall(
232 multicall_entry_t *call_list, int nr_calls)
233 {
234 return _hypercall2(int, multicall, call_list, nr_calls);
235 }
236
237 static inline int
HYPERVISOR_update_va_mapping(unsigned long va,unsigned long new_val,unsigned long flags)238 HYPERVISOR_update_va_mapping(
239 unsigned long va, unsigned long new_val, unsigned long flags)
240 {
241 return _hypercall3(int, update_va_mapping, va, new_val, flags);
242 }
243
244 static inline int
HYPERVISOR_event_channel_op(evtchn_op_t * op)245 HYPERVISOR_event_channel_op(evtchn_op_t *op)
246 {
247 KASSERT(op != NULL);
248 #if __XEN_INTERFACE_VERSION__ < 0x00030202
249 return _hypercall1(int, event_channel_op, op);
250 #else
251 return _hypercall2(int, event_channel_op, op->cmd, &op->u);
252 #endif
253 }
254
255 static inline int
HYPERVISOR_acm_op(int cmd,void * arg)256 HYPERVISOR_acm_op(
257 int cmd, void *arg)
258 {
259 return _hypercall2(int, acm_op, cmd, arg);
260 }
261
262 static inline int
HYPERVISOR_xen_version(int cmd,void * arg)263 HYPERVISOR_xen_version(
264 int cmd, void *arg)
265 {
266 return _hypercall2(int, xen_version, cmd, arg);
267 }
268
269 static inline int
HYPERVISOR_console_io(int cmd,int count,char * str)270 HYPERVISOR_console_io(
271 int cmd, int count, char *str)
272 {
273 return _hypercall3(int, console_io, cmd, count, str);
274 }
275
276 static inline int
HYPERVISOR_physdev_op(int cmd,void * op)277 HYPERVISOR_physdev_op(int cmd, void *op)
278 {
279 return _hypercall2(int, physdev_op, cmd, op);
280 }
281
282 static inline int
HYPERVISOR_grant_table_op(unsigned int cmd,void * uop,unsigned int count)283 HYPERVISOR_grant_table_op(
284 unsigned int cmd, void *uop, unsigned int count)
285 {
286 return _hypercall3(int, grant_table_op, cmd, uop, count);
287 }
288
289 static inline int
HYPERVISOR_update_va_mapping_otherdomain(unsigned long va,unsigned long new_val,unsigned long flags,domid_t domid)290 HYPERVISOR_update_va_mapping_otherdomain(
291 unsigned long va, unsigned long new_val, unsigned long flags,
292 domid_t domid)
293 {
294 return _hypercall4(int, update_va_mapping_otherdomain, va,
295 new_val, flags, domid);
296 }
297
298 static inline int
HYPERVISOR_vm_assist(unsigned int cmd,unsigned int type)299 HYPERVISOR_vm_assist(
300 unsigned int cmd, unsigned int type)
301 {
302 return _hypercall2(int, vm_assist, cmd, type);
303 }
304
305 static inline int
HYPERVISOR_vcpu_op(int cmd,int vcpuid,void * extra_args)306 HYPERVISOR_vcpu_op(
307 int cmd, int vcpuid, void *extra_args)
308 {
309 return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
310 }
311
312 static inline int
HYPERVISOR_set_segment_base(int reg,unsigned long value)313 HYPERVISOR_set_segment_base(
314 int reg, unsigned long value)
315 {
316 return _hypercall2(int, set_segment_base, reg, value);
317 }
318
319 static inline int
HYPERVISOR_suspend(unsigned long srec)320 HYPERVISOR_suspend(
321 unsigned long srec)
322 {
323 #if __XEN_INTERFACE_VERSION__ >= 0x00030201
324
325 struct sched_shutdown shutdown_reason = {
326 .reason = SHUTDOWN_suspend,
327 };
328
329 return _hypercall3(int, sched_op, SCHEDOP_shutdown,
330 &shutdown_reason, srec);
331 #else
332 return _hypercall3(int, sched_op, SCHEDOP_shutdown,
333 SHUTDOWN_suspend, srec);
334 #endif
335 }
336
337 static inline long
HYPERVISOR_yield(void)338 HYPERVISOR_yield(
339 void)
340 {
341 return _hypercall2(int, sched_op, SCHEDOP_yield, 0);
342 }
343
344 static inline long
HYPERVISOR_block(void)345 HYPERVISOR_block(
346 void)
347 {
348 return _hypercall2(int, sched_op, SCHEDOP_block, 0);
349 }
350
351 static inline long
HYPERVISOR_shutdown(void)352 HYPERVISOR_shutdown(
353 void)
354 {
355 #if __XEN_INTERFACE_VERSION__ >= 0x00030201
356
357 struct sched_shutdown shutdown_reason = {
358 .reason = SHUTDOWN_poweroff,
359 };
360
361 return _hypercall2(int, sched_op, SCHEDOP_shutdown,
362 &shutdown_reason);
363 #else
364 - return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_poweroff);
365 #endif
366 }
367
368 static inline long
HYPERVISOR_crash(void)369 HYPERVISOR_crash(
370 void)
371 {
372 #if __XEN_INTERFACE_VERSION__ >= 0x00030201
373
374 struct sched_shutdown shutdown_reason = {
375 .reason = SHUTDOWN_crash,
376 };
377
378 return _hypercall2(int, sched_op, SCHEDOP_shutdown,
379 &shutdown_reason);
380 #else
381 return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_crash);
382 #endif
383 }
384
385 static inline long
HYPERVISOR_reboot(void)386 HYPERVISOR_reboot(
387 void)
388 {
389 #if __XEN_INTERFACE_VERSION__ >= 0x00030201
390
391 struct sched_shutdown shutdown_reason = {
392 .reason = SHUTDOWN_reboot,
393 };
394
395 return _hypercall2(int, sched_op, SCHEDOP_shutdown,
396 &shutdown_reason);
397 #else
398 return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_reboot);
399 #endif
400 }
401
402 static inline int
HYPERVISOR_nmi_op(unsigned long op,void * arg)403 HYPERVISOR_nmi_op(
404 unsigned long op, void *arg)
405 {
406 return _hypercall2(int, nmi_op, op, arg);
407 }
408
409 static inline long
HYPERVISOR_hvm_op(int op,void * arg)410 HYPERVISOR_hvm_op(
411 int op, void *arg)
412 {
413 return _hypercall2(long, hvm_op, op, arg);
414 }
415
416 static inline int
HYPERVISOR_callback_op(int cmd,void * arg)417 HYPERVISOR_callback_op(
418 int cmd, void *arg)
419 {
420 return _hypercall2(int, callback_op, cmd, arg);
421 }
422
423 static inline int
HYPERVISOR_xenoprof_op(int op,void * arg)424 HYPERVISOR_xenoprof_op(
425 int op, void *arg)
426 {
427 return _hypercall2(int, xenoprof_op, op, arg);
428 }
429
430 static inline int
HYPERVISOR_kexec_op(unsigned long op,void * args)431 HYPERVISOR_kexec_op(
432 unsigned long op, void *args)
433 {
434 return _hypercall2(int, kexec_op, op, args);
435 }
436
437 #if __XEN_INTERFACE_VERSION__ < 0x00030204
438 static inline int
HYPERVISOR_dom0_op(dom0_op_t * dom0_op)439 HYPERVISOR_dom0_op(
440 dom0_op_t *dom0_op)
441 {
442 dom0_op->interface_version = DOM0_INTERFACE_VERSION;
443 return _hypercall1(int, dom0_op, dom0_op);
444 }
445 #endif /* __XEN_INTERFACE_VERSION__ */
446
447 #include <xen/include/public/arch-x86/xen-mca.h>
448
449 static inline int
HYPERVISOR_machine_check(struct xen_mc * mc)450 HYPERVISOR_machine_check(struct xen_mc *mc)
451 {
452 mc->interface_version = XEN_MCA_INTERFACE_VERSION;
453 return _hypercall1(int, mca, mc);
454 }
455
456 static inline int
HYPERVISOR_sysctl(void * sysctl)457 HYPERVISOR_sysctl(void *sysctl)
458 {
459 return _hypercall1(int, sysctl, sysctl);
460 }
461
462 #endif /* __HYPERCALL_H__ */
463