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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> | |
40 | struct xencomm_handle; | |
41 | extern 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 | ||
107 | static inline int | |
108 | xencomm_arch_hypercall_sched_op(int cmd, struct xencomm_handle *arg) | |
109 | { | |
44e69767 | 110 | return _hypercall2(int, sched_op, cmd, arg); |
ed50bd60 IY |
111 | } |
112 | ||
113 | static inline long | |
114 | HYPERVISOR_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 | ||
121 | static inline int | |
122 | xencomm_arch_hypercall_multicall(struct xencomm_handle *call_list, | |
123 | int nr_calls) | |
124 | { | |
125 | return _hypercall2(int, multicall, call_list, nr_calls); | |
126 | } | |
127 | ||
128 | static inline int | |
129 | xencomm_arch_hypercall_memory_op(unsigned int cmd, struct xencomm_handle *arg) | |
130 | { | |
131 | return _hypercall2(int, memory_op, cmd, arg); | |
132 | } | |
133 | ||
134 | static inline int | |
135 | xencomm_arch_hypercall_event_channel_op(int cmd, struct xencomm_handle *arg) | |
136 | { | |
137 | return _hypercall2(int, event_channel_op, cmd, arg); | |
138 | } | |
139 | ||
140 | static inline int | |
141 | xencomm_arch_hypercall_xen_version(int cmd, struct xencomm_handle *arg) | |
142 | { | |
143 | return _hypercall2(int, xen_version, cmd, arg); | |
144 | } | |
145 | ||
146 | static inline int | |
147 | xencomm_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 | ||
153 | static inline int | |
154 | xencomm_arch_hypercall_physdev_op(int cmd, struct xencomm_handle *arg) | |
155 | { | |
156 | return _hypercall2(int, physdev_op, cmd, arg); | |
157 | } | |
158 | ||
159 | static inline int | |
160 | xencomm_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 | ||
167 | int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count); | |
168 | ||
169 | extern int xencomm_arch_hypercall_suspend(struct xencomm_handle *arg); | |
170 | ||
171 | static inline int | |
172 | xencomm_arch_hypercall_callback_op(int cmd, struct xencomm_handle *arg) | |
173 | { | |
174 | return _hypercall2(int, callback_op, cmd, arg); | |
175 | } | |
176 | ||
177 | static inline long | |
178 | xencomm_arch_hypercall_vcpu_op(int cmd, int cpu, void *arg) | |
179 | { | |
180 | return _hypercall3(long, vcpu_op, cmd, cpu, arg); | |
181 | } | |
182 | ||
183 | static inline int | |
184 | HYPERVISOR_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 | ||
195 | static inline long | |
196 | xencomm_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 | ||
219 | static inline int | |
220 | HYPERVISOR_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 | ||
235 | static inline void | |
236 | MULTI_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 | ||
244 | static inline void | |
245 | MULTI_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 | ||
254 | static inline void | |
255 | MULTI_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 */ |