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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 */
32
33#ifndef _ASM_IA64_XEN_HYPERCALL_H
34#define _ASM_IA64_XEN_HYPERCALL_H
35
36#include <xen/interface/xen.h>
37#include <xen/interface/physdev.h>
38#include <xen/interface/sched.h>
39#include <asm/xen/xcom_hcall.h>
40struct xencomm_handle;
41extern unsigned long __hypercall(unsigned long a1, unsigned long a2,
42 unsigned long a3, unsigned long a4,
43 unsigned long a5, unsigned long cmd);
44
45/*
46 * Assembler stubs for hyper-calls.
47 */
48
49#define _hypercall0(type, name) \
50({ \
51 long __res; \
52 __res = __hypercall(0, 0, 0, 0, 0, __HYPERVISOR_##name);\
53 (type)__res; \
54})
55
56#define _hypercall1(type, name, a1) \
57({ \
58 long __res; \
59 __res = __hypercall((unsigned long)a1, \
60 0, 0, 0, 0, __HYPERVISOR_##name); \
61 (type)__res; \
62})
63
64#define _hypercall2(type, name, a1, a2) \
65({ \
66 long __res; \
67 __res = __hypercall((unsigned long)a1, \
68 (unsigned long)a2, \
69 0, 0, 0, __HYPERVISOR_##name); \
70 (type)__res; \
71})
72
73#define _hypercall3(type, name, a1, a2, a3) \
74({ \
75 long __res; \
76 __res = __hypercall((unsigned long)a1, \
77 (unsigned long)a2, \
78 (unsigned long)a3, \
79 0, 0, __HYPERVISOR_##name); \
80 (type)__res; \
81})
82
83#define _hypercall4(type, name, a1, a2, a3, a4) \
84({ \
85 long __res; \
86 __res = __hypercall((unsigned long)a1, \
87 (unsigned long)a2, \
88 (unsigned long)a3, \
89 (unsigned long)a4, \
90 0, __HYPERVISOR_##name); \
91 (type)__res; \
92})
93
94#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
95({ \
96 long __res; \
97 __res = __hypercall((unsigned long)a1, \
98 (unsigned long)a2, \
99 (unsigned long)a3, \
100 (unsigned long)a4, \
101 (unsigned long)a5, \
102 __HYPERVISOR_##name); \
103 (type)__res; \
104})
105
106
107static inline int
108xencomm_arch_hypercall_sched_op(int cmd, struct xencomm_handle *arg)
109{
110 return _hypercall2(int, sched_op, cmd, arg);
111}
112
113static inline long
114HYPERVISOR_set_timer_op(u64 timeout)
115{
116 unsigned long timeout_hi = (unsigned long)(timeout >> 32);
117 unsigned long timeout_lo = (unsigned long)timeout;
118 return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
119}
120
121static inline int
122xencomm_arch_hypercall_multicall(struct xencomm_handle *call_list,
123 int nr_calls)
124{
125 return _hypercall2(int, multicall, call_list, nr_calls);
126}
127
128static inline int
129xencomm_arch_hypercall_memory_op(unsigned int cmd, struct xencomm_handle *arg)
130{
131 return _hypercall2(int, memory_op, cmd, arg);
132}
133
134static inline int
135xencomm_arch_hypercall_event_channel_op(int cmd, struct xencomm_handle *arg)
136{
137 return _hypercall2(int, event_channel_op, cmd, arg);
138}
139
140static inline int
141xencomm_arch_hypercall_xen_version(int cmd, struct xencomm_handle *arg)
142{
143 return _hypercall2(int, xen_version, cmd, arg);
144}
145
146static inline int
147xencomm_arch_hypercall_console_io(int cmd, int count,
148 struct xencomm_handle *str)
149{
150 return _hypercall3(int, console_io, cmd, count, str);
151}
152
153static inline int
154xencomm_arch_hypercall_physdev_op(int cmd, struct xencomm_handle *arg)
155{
156 return _hypercall2(int, physdev_op, cmd, arg);
157}
158
159static inline int
160xencomm_arch_hypercall_grant_table_op(unsigned int cmd,
161 struct xencomm_handle *uop,
162 unsigned int count)
163{
164 return _hypercall3(int, grant_table_op, cmd, uop, count);
165}
166
167int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
168
169extern int xencomm_arch_hypercall_suspend(struct xencomm_handle *arg);
170
171static inline int
172xencomm_arch_hypercall_callback_op(int cmd, struct xencomm_handle *arg)
173{
174 return _hypercall2(int, callback_op, cmd, arg);
175}
176
177static inline long
178xencomm_arch_hypercall_vcpu_op(int cmd, int cpu, void *arg)
179{
180 return _hypercall3(long, vcpu_op, cmd, cpu, arg);
181}
182
183static inline int
184HYPERVISOR_physdev_op(int cmd, void *arg)
185{
186 switch (cmd) {
187 case PHYSDEVOP_eoi:
188 return _hypercall1(int, ia64_fast_eoi,
189 ((struct physdev_eoi *)arg)->irq);
190 default:
191 return xencomm_hypercall_physdev_op(cmd, arg);
192 }
193}
194
195static inline long
196xencomm_arch_hypercall_opt_feature(struct xencomm_handle *arg)
197{
198 return _hypercall1(long, opt_feature, arg);
199}
200
201/* for balloon driver */
202#define HYPERVISOR_update_va_mapping(va, new_val, flags) (0)
203
204/* Use xencomm to do hypercalls. */
205#define HYPERVISOR_sched_op xencomm_hypercall_sched_op
206#define HYPERVISOR_event_channel_op xencomm_hypercall_event_channel_op
207#define HYPERVISOR_callback_op xencomm_hypercall_callback_op
208#define HYPERVISOR_multicall xencomm_hypercall_multicall
209#define HYPERVISOR_xen_version xencomm_hypercall_xen_version
210#define HYPERVISOR_console_io xencomm_hypercall_console_io
211#define HYPERVISOR_memory_op xencomm_hypercall_memory_op
212#define HYPERVISOR_suspend xencomm_hypercall_suspend
213#define HYPERVISOR_vcpu_op xencomm_hypercall_vcpu_op
214#define HYPERVISOR_opt_feature xencomm_hypercall_opt_feature
215
216/* to compile gnttab_copy_grant_page() in drivers/xen/core/gnttab.c */
217#define HYPERVISOR_mmu_update(req, count, success_count, domid) ({ BUG(); 0; })
218
219static inline int
220HYPERVISOR_shutdown(
221 unsigned int reason)
222{
223 struct sched_shutdown sched_shutdown = {
224 .reason = reason
225 };
226
227 int rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
228
229 return rc;
230}
231
232/* for netfront.c, netback.c */
233#define MULTI_UVMFLAGS_INDEX 0 /* XXX any value */
234
235static inline void
236MULTI_update_va_mapping(
237 struct multicall_entry *mcl, unsigned long va,
238 pte_t new_val, unsigned long flags)
239{
240 mcl->op = __HYPERVISOR_update_va_mapping;
241 mcl->result = 0;
242}
243
244static inline void
245MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
246 void *uop, unsigned int count)
247{
248 mcl->op = __HYPERVISOR_grant_table_op;
249 mcl->args[0] = cmd;
250 mcl->args[1] = (unsigned long)uop;
251 mcl->args[2] = count;
252}
253
254static inline void
255MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
256 int count, int *success_count, domid_t domid)
257{
258 mcl->op = __HYPERVISOR_mmu_update;
259 mcl->args[0] = (unsigned long)req;
260 mcl->args[1] = count;
261 mcl->args[2] = (unsigned long)success_count;
262 mcl->args[3] = domid;
263}
264
265#endif /* _ASM_IA64_XEN_HYPERCALL_H */