ia64/xen-unstable

view linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/hypercall.h @ 11100:905ff6e616cc

[HVM] Add stubs to Linux for the new hvm_op hypercall.
Signed-off-by: Steven Smith <ssmith@xensource.com>
author kfraser@localhost.localdomain
date Mon Aug 14 11:33:50 2006 +0100 (2006-08-14)
parents e913081f20f3
children 2b78726766d1
line source
1 /******************************************************************************
2 * hypercall.h
3 *
4 * Linux-specific hypervisor handling.
5 *
6 * Copyright (c) 2002-2004, K A Fraser
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation; or, when distributed
11 * separately from the Linux kernel or incorporated into other
12 * software packages, subject to the following license:
13 *
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this source file (the "Software"), to deal in the Software without
16 * restriction, including without limitation the rights to use, copy, modify,
17 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
18 * and to permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
30 * IN THE SOFTWARE.
31 */
33 #ifndef __HYPERCALL_H__
34 #define __HYPERCALL_H__
36 #include <linux/string.h> /* memcpy() */
38 #ifndef __HYPERVISOR_H__
39 # error "please don't include this file directly"
40 #endif
42 #define __STR(x) #x
43 #define STR(x) __STR(x)
45 #define _hypercall0(type, name) \
46 ({ \
47 long __res; \
48 asm volatile ( \
49 "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"\
50 : "=a" (__res) \
51 : \
52 : "memory" ); \
53 (type)__res; \
54 })
56 #define _hypercall1(type, name, a1) \
57 ({ \
58 long __res, __ign1; \
59 asm volatile ( \
60 "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"\
61 : "=a" (__res), "=b" (__ign1) \
62 : "1" ((long)(a1)) \
63 : "memory" ); \
64 (type)__res; \
65 })
67 #define _hypercall2(type, name, a1, a2) \
68 ({ \
69 long __res, __ign1, __ign2; \
70 asm volatile ( \
71 "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"\
72 : "=a" (__res), "=b" (__ign1), "=c" (__ign2) \
73 : "1" ((long)(a1)), "2" ((long)(a2)) \
74 : "memory" ); \
75 (type)__res; \
76 })
78 #define _hypercall3(type, name, a1, a2, a3) \
79 ({ \
80 long __res, __ign1, __ign2, __ign3; \
81 asm volatile ( \
82 "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"\
83 : "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
84 "=d" (__ign3) \
85 : "1" ((long)(a1)), "2" ((long)(a2)), \
86 "3" ((long)(a3)) \
87 : "memory" ); \
88 (type)__res; \
89 })
91 #define _hypercall4(type, name, a1, a2, a3, a4) \
92 ({ \
93 long __res, __ign1, __ign2, __ign3, __ign4; \
94 asm volatile ( \
95 "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"\
96 : "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
97 "=d" (__ign3), "=S" (__ign4) \
98 : "1" ((long)(a1)), "2" ((long)(a2)), \
99 "3" ((long)(a3)), "4" ((long)(a4)) \
100 : "memory" ); \
101 (type)__res; \
102 })
104 #define _hypercall5(type, name, a1, a2, a3, a4, a5) \
105 ({ \
106 long __res, __ign1, __ign2, __ign3, __ign4, __ign5; \
107 asm volatile ( \
108 "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"\
109 : "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
110 "=d" (__ign3), "=S" (__ign4), "=D" (__ign5) \
111 : "1" ((long)(a1)), "2" ((long)(a2)), \
112 "3" ((long)(a3)), "4" ((long)(a4)), \
113 "5" ((long)(a5)) \
114 : "memory" ); \
115 (type)__res; \
116 })
118 static inline int
119 HYPERVISOR_set_trap_table(
120 trap_info_t *table)
121 {
122 return _hypercall1(int, set_trap_table, table);
123 }
125 static inline int
126 HYPERVISOR_mmu_update(
127 mmu_update_t *req, int count, int *success_count, domid_t domid)
128 {
129 return _hypercall4(int, mmu_update, req, count, success_count, domid);
130 }
132 static inline int
133 HYPERVISOR_mmuext_op(
134 struct mmuext_op *op, int count, int *success_count, domid_t domid)
135 {
136 return _hypercall4(int, mmuext_op, op, count, success_count, domid);
137 }
139 static inline int
140 HYPERVISOR_set_gdt(
141 unsigned long *frame_list, int entries)
142 {
143 return _hypercall2(int, set_gdt, frame_list, entries);
144 }
146 static inline int
147 HYPERVISOR_stack_switch(
148 unsigned long ss, unsigned long esp)
149 {
150 return _hypercall2(int, stack_switch, ss, esp);
151 }
153 static inline int
154 HYPERVISOR_set_callbacks(
155 unsigned long event_selector, unsigned long event_address,
156 unsigned long failsafe_selector, unsigned long failsafe_address)
157 {
158 return _hypercall4(int, set_callbacks,
159 event_selector, event_address,
160 failsafe_selector, failsafe_address);
161 }
163 static inline int
164 HYPERVISOR_fpu_taskswitch(
165 int set)
166 {
167 return _hypercall1(int, fpu_taskswitch, set);
168 }
170 static inline int
171 HYPERVISOR_sched_op_compat(
172 int cmd, unsigned long arg)
173 {
174 return _hypercall2(int, sched_op_compat, cmd, arg);
175 }
177 static inline int
178 HYPERVISOR_sched_op(
179 int cmd, void *arg)
180 {
181 return _hypercall2(int, sched_op, cmd, arg);
182 }
184 static inline long
185 HYPERVISOR_set_timer_op(
186 u64 timeout)
187 {
188 unsigned long timeout_hi = (unsigned long)(timeout>>32);
189 unsigned long timeout_lo = (unsigned long)timeout;
190 return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
191 }
193 static inline int
194 HYPERVISOR_dom0_op(
195 dom0_op_t *dom0_op)
196 {
197 dom0_op->interface_version = DOM0_INTERFACE_VERSION;
198 return _hypercall1(int, dom0_op, dom0_op);
199 }
201 static inline int
202 HYPERVISOR_set_debugreg(
203 int reg, unsigned long value)
204 {
205 return _hypercall2(int, set_debugreg, reg, value);
206 }
208 static inline unsigned long
209 HYPERVISOR_get_debugreg(
210 int reg)
211 {
212 return _hypercall1(unsigned long, get_debugreg, reg);
213 }
215 static inline int
216 HYPERVISOR_update_descriptor(
217 u64 ma, u64 desc)
218 {
219 return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32);
220 }
222 static inline int
223 HYPERVISOR_memory_op(
224 unsigned int cmd, void *arg)
225 {
226 return _hypercall2(int, memory_op, cmd, arg);
227 }
229 static inline int
230 HYPERVISOR_multicall(
231 void *call_list, int nr_calls)
232 {
233 return _hypercall2(int, multicall, call_list, nr_calls);
234 }
236 static inline int
237 HYPERVISOR_update_va_mapping(
238 unsigned long va, pte_t new_val, unsigned long flags)
239 {
240 unsigned long pte_hi = 0;
241 #ifdef CONFIG_X86_PAE
242 pte_hi = new_val.pte_high;
243 #endif
244 return _hypercall4(int, update_va_mapping, va,
245 new_val.pte_low, pte_hi, flags);
246 }
248 static inline int
249 HYPERVISOR_event_channel_op(
250 int cmd, void *arg)
251 {
252 int rc = _hypercall2(int, event_channel_op, cmd, arg);
253 if (unlikely(rc == -ENOSYS)) {
254 struct evtchn_op op;
255 op.cmd = cmd;
256 memcpy(&op.u, arg, sizeof(op.u));
257 rc = _hypercall1(int, event_channel_op_compat, &op);
258 memcpy(arg, &op.u, sizeof(op.u));
259 }
260 return rc;
261 }
263 static inline int
264 HYPERVISOR_acm_op(
265 int cmd, void *arg)
266 {
267 return _hypercall2(int, acm_op, cmd, arg);
268 }
270 static inline int
271 HYPERVISOR_xen_version(
272 int cmd, void *arg)
273 {
274 return _hypercall2(int, xen_version, cmd, arg);
275 }
277 static inline int
278 HYPERVISOR_console_io(
279 int cmd, int count, char *str)
280 {
281 return _hypercall3(int, console_io, cmd, count, str);
282 }
284 static inline int
285 HYPERVISOR_physdev_op(
286 int cmd, void *arg)
287 {
288 int rc = _hypercall2(int, physdev_op, cmd, arg);
289 if (unlikely(rc == -ENOSYS)) {
290 struct physdev_op op;
291 op.cmd = cmd;
292 memcpy(&op.u, arg, sizeof(op.u));
293 rc = _hypercall1(int, physdev_op_compat, &op);
294 memcpy(arg, &op.u, sizeof(op.u));
295 }
296 return rc;
297 }
299 static inline int
300 HYPERVISOR_grant_table_op(
301 unsigned int cmd, void *uop, unsigned int count)
302 {
303 return _hypercall3(int, grant_table_op, cmd, uop, count);
304 }
306 static inline int
307 HYPERVISOR_update_va_mapping_otherdomain(
308 unsigned long va, pte_t new_val, unsigned long flags, domid_t domid)
309 {
310 unsigned long pte_hi = 0;
311 #ifdef CONFIG_X86_PAE
312 pte_hi = new_val.pte_high;
313 #endif
314 return _hypercall5(int, update_va_mapping_otherdomain, va,
315 new_val.pte_low, pte_hi, flags, domid);
316 }
318 static inline int
319 HYPERVISOR_vm_assist(
320 unsigned int cmd, unsigned int type)
321 {
322 return _hypercall2(int, vm_assist, cmd, type);
323 }
325 static inline int
326 HYPERVISOR_vcpu_op(
327 int cmd, int vcpuid, void *extra_args)
328 {
329 return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
330 }
332 static inline int
333 HYPERVISOR_suspend(
334 unsigned long srec)
335 {
336 struct sched_shutdown sched_shutdown = {
337 .reason = SHUTDOWN_suspend
338 };
340 int rc = _hypercall3(int, sched_op, SCHEDOP_shutdown,
341 &sched_shutdown, srec);
343 if (rc == -ENOSYS)
344 rc = _hypercall3(int, sched_op_compat, SCHEDOP_shutdown,
345 SHUTDOWN_suspend, srec);
347 return rc;
348 }
350 static inline int
351 HYPERVISOR_nmi_op(
352 unsigned long op, void *arg)
353 {
354 return _hypercall2(int, nmi_op, op, arg);
355 }
357 static inline unsigned long
358 HYPERVISOR_hvm_op(
359 int op, void *arg)
360 {
361 return _hypercall2(unsigned long, hvm_op, op, arg);
362 }
364 static inline int
365 HYPERVISOR_callback_op(
366 int cmd, void *arg)
367 {
368 return _hypercall2(int, callback_op, cmd, arg);
369 }
371 static inline int
372 HYPERVISOR_xenoprof_op(
373 int op, void *arg)
374 {
375 return _hypercall2(int, xenoprof_op, op, arg);
376 }
379 #endif /* __HYPERCALL_H__ */