Merge branch 'for-rmk/samsung6' of git://git.fluff.org/bjdooks/linux into devel-stable
[linux-2.6.git] / drivers / staging / hv / Hv.h
1 /*
2  *
3  * Copyright (c) 2009, Microsoft Corporation.
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms and conditions of the GNU General Public License,
7  * version 2, as published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12  * more details.
13  *
14  * You should have received a copy of the GNU General Public License along with
15  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16  * Place - Suite 330, Boston, MA 02111-1307 USA.
17  *
18  * Authors:
19  *   Haiyang Zhang <haiyangz@microsoft.com>
20  *   Hank Janssen  <hjanssen@microsoft.com>
21  *
22  */
23
24
25 #ifndef __HV_H__
26 #define __HV_H__
27
28 #include "hv_api.h"
29
30 enum {
31         VMBUS_MESSAGE_CONNECTION_ID     = 1,
32         VMBUS_MESSAGE_PORT_ID           = 1,
33         VMBUS_EVENT_CONNECTION_ID       = 2,
34         VMBUS_EVENT_PORT_ID             = 2,
35         VMBUS_MONITOR_CONNECTION_ID     = 3,
36         VMBUS_MONITOR_PORT_ID           = 3,
37         VMBUS_MESSAGE_SINT              = 2,
38 };
39
40 /* #defines */
41
42 #define HV_PRESENT_BIT                  0x80000000
43
44 #define HV_XENLINUX_GUEST_ID_LO         0x00000000
45 #define HV_XENLINUX_GUEST_ID_HI         0x0B00B135
46 #define HV_XENLINUX_GUEST_ID            (((u64)HV_XENLINUX_GUEST_ID_HI << 32) \
47                                           | HV_XENLINUX_GUEST_ID_LO)
48
49 #define HV_LINUX_GUEST_ID_LO            0x00000000
50 #define HV_LINUX_GUEST_ID_HI            0xB16B00B5
51 #define HV_LINUX_GUEST_ID               (((u64)HV_LINUX_GUEST_ID_HI << 32) | \
52                                            HV_LINUX_GUEST_ID_LO)
53
54 #define HV_CPU_POWER_MANAGEMENT         (1 << 0)
55 #define HV_RECOMMENDATIONS_MAX          4
56
57 #define HV_X64_MAX                      5
58 #define HV_CAPS_MAX                     8
59
60
61 #define HV_HYPERCALL_PARAM_ALIGN        sizeof(u64)
62
63
64 /* Service definitions */
65
66 #define HV_SERVICE_PARENT_PORT                          (0)
67 #define HV_SERVICE_PARENT_CONNECTION                    (0)
68
69 #define HV_SERVICE_CONNECT_RESPONSE_SUCCESS             (0)
70 #define HV_SERVICE_CONNECT_RESPONSE_INVALID_PARAMETER   (1)
71 #define HV_SERVICE_CONNECT_RESPONSE_UNKNOWN_SERVICE     (2)
72 #define HV_SERVICE_CONNECT_RESPONSE_CONNECTION_REJECTED (3)
73
74 #define HV_SERVICE_CONNECT_REQUEST_MESSAGE_ID           (1)
75 #define HV_SERVICE_CONNECT_RESPONSE_MESSAGE_ID          (2)
76 #define HV_SERVICE_DISCONNECT_REQUEST_MESSAGE_ID        (3)
77 #define HV_SERVICE_DISCONNECT_RESPONSE_MESSAGE_ID       (4)
78 #define HV_SERVICE_MAX_MESSAGE_ID                               (4)
79
80 #define HV_SERVICE_PROTOCOL_VERSION (0x0010)
81 #define HV_CONNECT_PAYLOAD_BYTE_COUNT 64
82
83 /* #define VMBUS_REVISION_NUMBER        6 */
84
85 /* Our local vmbus's port and connection id. Anything >0 is fine */
86 /* #define VMBUS_PORT_ID                11 */
87
88 /* 628180B8-308D-4c5e-B7DB-1BEB62E62EF4 */
89 static const struct hv_guid VMBUS_SERVICE_ID = {
90         .data = {
91                 0xb8, 0x80, 0x81, 0x62, 0x8d, 0x30, 0x5e, 0x4c,
92                 0xb7, 0xdb, 0x1b, 0xeb, 0x62, 0xe6, 0x2e, 0xf4
93         },
94 };
95
96 #define MAX_NUM_CPUS    32
97
98
99 struct hv_input_signal_event_buffer {
100         u64 Align8;
101         struct hv_input_signal_event Event;
102 };
103
104 struct hv_context {
105         /* XenLinux or native Linux. If XenLinux, the hypercall and synic pages
106          * has already been initialized */
107         u64 GuestId;
108
109         void *HypercallPage;
110
111         bool SynICInitialized;
112
113         /*
114          * This is used as an input param to HvCallSignalEvent hypercall. The
115          * input param is immutable in our usage and must be dynamic mem (vs
116          * stack or global). */
117         struct hv_input_signal_event_buffer *SignalEventBuffer;
118         /* 8-bytes aligned of the buffer above */
119         struct hv_input_signal_event *SignalEventParam;
120
121         void *synICMessagePage[MAX_NUM_CPUS];
122         void *synICEventPage[MAX_NUM_CPUS];
123 };
124
125 extern struct hv_context gHvContext;
126
127
128 /* Hv Interface */
129
130 extern int HvInit(void);
131
132 extern void HvCleanup(void);
133
134 extern u16 HvPostMessage(union hv_connection_id connectionId,
135                          enum hv_message_type messageType,
136                          void *payload, size_t payloadSize);
137
138 extern u16 HvSignalEvent(void);
139
140 extern void HvSynicInit(void *irqarg);
141
142 extern void HvSynicCleanup(void *arg);
143
144 #endif /* __HV_H__ */