ia64/xen-unstable

view xen/include/public/callback.h @ 12938:b58670602d35

[POWERPC][XEN] Builtin cmdline dependency rule
Rebuild cmdline.o when the user changes the CMDLINE=X argument passed to
the make invocation. I couldn't find an example of another project that
handles this case properly, so I came up with this.
Signed-off-by: Amos Waterland <apw@us.ibm.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
author Hollis Blanchard <hollisb@us.ibm.com>
date Thu Oct 05 15:48:26 2006 -0500 (2006-10-05)
parents 8d0e06c38c0c
children aeebd173c3fa
line source
1 /******************************************************************************
2 * callback.h
3 *
4 * Register guest OS callbacks with Xen.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Copyright (c) 2006, Ian Campbell
25 */
27 #ifndef __XEN_PUBLIC_CALLBACK_H__
28 #define __XEN_PUBLIC_CALLBACK_H__
30 #include "xen.h"
32 /*
33 * Prototype for this hypercall is:
34 * long callback_op(int cmd, void *extra_args)
35 * @cmd == CALLBACKOP_??? (callback operation).
36 * @extra_args == Operation-specific extra arguments (NULL if none).
37 */
39 #define CALLBACKTYPE_event 0
40 #define CALLBACKTYPE_failsafe 1
41 #define CALLBACKTYPE_syscall 2 /* x86_64 only */
42 /*
43 * sysenter is only available on x86_32 with the
44 * supervisor_mode_kernel option enabled.
45 */
46 #define CALLBACKTYPE_sysenter 3
47 #define CALLBACKTYPE_nmi 4
49 /*
50 * Disable event deliver during callback? This flag is ignored for event and
51 * NMI callbacks: event delivery is unconditionally disabled.
52 */
53 #define _CALLBACKF_mask_events 0
54 #define CALLBACKF_mask_events (1U << _CALLBACKF_mask_events)
56 /*
57 * Register a callback.
58 */
59 #define CALLBACKOP_register 0
60 struct callback_register {
61 uint16_t type;
62 uint16_t flags;
63 xen_callback_t address;
64 };
65 typedef struct callback_register callback_register_t;
66 DEFINE_XEN_GUEST_HANDLE(callback_register_t);
68 /*
69 * Unregister a callback.
70 *
71 * Not all callbacks can be unregistered. -EINVAL will be returned if
72 * you attempt to unregister such a callback.
73 */
74 #define CALLBACKOP_unregister 1
75 struct callback_unregister {
76 uint16_t type;
77 uint16_t _unused;
78 };
79 typedef struct callback_unregister callback_unregister_t;
80 DEFINE_XEN_GUEST_HANDLE(callback_unregister_t);
82 #endif /* __XEN_PUBLIC_CALLBACK_H__ */
84 /*
85 * Local variables:
86 * mode: C
87 * c-set-style: "BSD"
88 * c-basic-offset: 4
89 * tab-width: 4
90 * indent-tabs-mode: nil
91 * End:
92 */