1/* $NetBSD: hypercalls.h,v 1.7 2011/12/07 15:47:42 cegger 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
122static inline int
123HYPERVISOR_set_trap_table(
124	trap_info_t *table)
125{
126	return _hypercall1(int, set_trap_table, table);
127}
128
129static inline int
130HYPERVISOR_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
136static inline int
137HYPERVISOR_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
143static inline int
144HYPERVISOR_set_gdt(
145	unsigned long *frame_list, int entries)
146{
147	return _hypercall2(int, set_gdt, frame_list, entries);
148}
149
150static inline int
151HYPERVISOR_stack_switch(
152	unsigned long ss, unsigned long esp)
153{
154	return _hypercall2(int, stack_switch, ss, esp);
155}
156
157static inline int
158HYPERVISOR_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
166static inline int
167HYPERVISOR_fpu_taskswitch(
168	int set)
169{
170	return _hypercall1(int, fpu_taskswitch, set);
171}
172
173static inline int
174HYPERVISOR_sched_op_compat(
175	int cmd, unsigned long arg)
176{
177	return _hypercall2(int, sched_op_compat, cmd, arg);
178}
179
180static inline int
181HYPERVISOR_sched_op(
182	int cmd, void *arg)
183{
184	return _hypercall2(int, sched_op, cmd, arg);
185}
186
187static inline long
188HYPERVISOR_set_timer_op(
189	u64 timeout)
190{
191	return _hypercall1(long, set_timer_op, timeout);
192}
193
194static inline int
195HYPERVISOR_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
202static inline int
203HYPERVISOR_set_debugreg(
204	int reg, unsigned long value)
205{
206	return _hypercall2(int, set_debugreg, reg, value);
207}
208
209static inline unsigned long
210HYPERVISOR_get_debugreg(
211	int reg)
212{
213	return _hypercall1(unsigned long, get_debugreg, reg);
214}
215
216static inline int
217HYPERVISOR_update_descriptor(
218	unsigned long ma, unsigned long word)
219{
220	return _hypercall2(int, update_descriptor, ma, word);
221}
222
223static inline int
224HYPERVISOR_memory_op(
225	unsigned int cmd, void *arg)
226{
227	return _hypercall2(int, memory_op, cmd, arg);
228}
229
230static inline int
231HYPERVISOR_multicall(
232	multicall_entry_t *call_list, int nr_calls)
233{
234	return _hypercall2(int, multicall, call_list, nr_calls);
235}
236
237static inline int
238HYPERVISOR_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
244static inline int
245HYPERVISOR_event_channel_op(void *op)
246{
247	return _hypercall1(int, event_channel_op, op);
248}
249
250static inline int
251HYPERVISOR_acm_op(
252	int cmd, void *arg)
253{
254	return _hypercall2(int, acm_op, cmd, arg);
255}
256
257static inline int
258HYPERVISOR_xen_version(
259	int cmd, void *arg)
260{
261	return _hypercall2(int, xen_version, cmd, arg);
262}
263
264static inline int
265HYPERVISOR_console_io(
266	int cmd, int count, char *str)
267{
268	return _hypercall3(int, console_io, cmd, count, str);
269}
270
271static inline int
272HYPERVISOR_physdev_op(void *op)
273{
274	return _hypercall1(int, physdev_op_compat, op);
275}
276
277static inline int
278HYPERVISOR_grant_table_op(
279	unsigned int cmd, void *uop, unsigned int count)
280{
281	return _hypercall3(int, grant_table_op, cmd, uop, count);
282}
283
284static inline int
285HYPERVISOR_update_va_mapping_otherdomain(
286	unsigned long va, unsigned long new_val, unsigned long flags,
287	domid_t domid)
288{
289	return _hypercall4(int, update_va_mapping_otherdomain, va,
290			   new_val, flags, domid);
291}
292
293static inline int
294HYPERVISOR_vm_assist(
295	unsigned int cmd, unsigned int type)
296{
297	return _hypercall2(int, vm_assist, cmd, type);
298}
299
300static inline int
301HYPERVISOR_vcpu_op(
302	int cmd, int vcpuid, void *extra_args)
303{
304	return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
305}
306
307static inline int
308HYPERVISOR_set_segment_base(
309	int reg, unsigned long value)
310{
311	return _hypercall2(int, set_segment_base, reg, value);
312}
313
314static inline int
315HYPERVISOR_suspend(
316	unsigned long srec)
317{
318	return _hypercall3(int, sched_op, SCHEDOP_shutdown,
319				 SHUTDOWN_suspend, srec);
320}
321
322static inline long
323HYPERVISOR_yield(
324	void)
325{
326	return _hypercall2(int, sched_op, SCHEDOP_yield, 0);
327}
328
329static inline long
330HYPERVISOR_block(
331	void)
332{
333	return _hypercall2(int, sched_op, SCHEDOP_block, 0);
334}
335
336static inline long
337HYPERVISOR_shutdown(
338	void)
339{
340	return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_poweroff);
341}
342
343static inline long
344HYPERVISOR_crash(
345	void)
346{
347	return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_crash);
348}
349
350static inline long
351HYPERVISOR_reboot(
352	void)
353{
354	return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_reboot);
355}
356
357static inline int
358HYPERVISOR_nmi_op(
359	unsigned long op, void *arg)
360{
361	return _hypercall2(int, nmi_op, op, arg);
362}
363
364static inline unsigned long
365HYPERVISOR_hvm_op(
366    int op, void *arg)
367{
368    return _hypercall2(unsigned long, hvm_op, op, arg);
369}
370
371static inline int
372HYPERVISOR_callback_op(
373	int cmd, void *arg)
374{
375	return _hypercall2(int, callback_op, cmd, arg);
376}
377
378static inline int
379HYPERVISOR_xenoprof_op(
380	int op, void *arg)
381{
382	return _hypercall2(int, xenoprof_op, op, arg);
383}
384
385static inline int
386HYPERVISOR_kexec_op(
387	unsigned long op, void *args)
388{
389	return _hypercall2(int, kexec_op, op, args);
390}
391
392#if __XEN_INTERFACE_VERSION__ < 0x00030204
393static inline int
394HYPERVISOR_dom0_op(
395	dom0_op_t *dom0_op)
396{
397	dom0_op->interface_version = DOM0_INTERFACE_VERSION;
398	return _hypercall1(int, dom0_op, dom0_op);
399}
400#endif	/* __XEN_INTERFACE_VERSION__ */
401
402#include <xen/xen-public/arch-x86/xen-mca.h>
403
404static inline int
405HYPERVISOR_machine_check(struct xen_mc *mc)
406{
407	mc->interface_version = XEN_MCA_INTERFACE_VERSION;
408	return _hypercall1(int, mca, mc);
409}
410
411static inline int
412HYPERVISOR_sysctl(void *sysctl)
413{
414	return _hypercall1(int, sysctl, sysctl);
415}
416
417#endif /* __HYPERCALL_H__ */
418