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 30enum { 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_LINUX_GUEST_ID_LO 0x00000000 45#define HV_LINUX_GUEST_ID_HI 0xB16B00B5 46#define HV_LINUX_GUEST_ID (((u64)HV_LINUX_GUEST_ID_HI << 32) | \ 47 HV_LINUX_GUEST_ID_LO) 48 49#define HV_CPU_POWER_MANAGEMENT (1 << 0) 50#define HV_RECOMMENDATIONS_MAX 4 51 52#define HV_X64_MAX 5 53#define HV_CAPS_MAX 8 54 55 56#define HV_HYPERCALL_PARAM_ALIGN sizeof(u64) 57 58 59/* Service definitions */ 60 61#define HV_SERVICE_PARENT_PORT (0) 62#define HV_SERVICE_PARENT_CONNECTION (0) 63 64#define HV_SERVICE_CONNECT_RESPONSE_SUCCESS (0) 65#define HV_SERVICE_CONNECT_RESPONSE_INVALID_PARAMETER (1) 66#define HV_SERVICE_CONNECT_RESPONSE_UNKNOWN_SERVICE (2) 67#define HV_SERVICE_CONNECT_RESPONSE_CONNECTION_REJECTED (3) 68 69#define HV_SERVICE_CONNECT_REQUEST_MESSAGE_ID (1) 70#define HV_SERVICE_CONNECT_RESPONSE_MESSAGE_ID (2) 71#define HV_SERVICE_DISCONNECT_REQUEST_MESSAGE_ID (3) 72#define HV_SERVICE_DISCONNECT_RESPONSE_MESSAGE_ID (4) 73#define HV_SERVICE_MAX_MESSAGE_ID (4) 74 75#define HV_SERVICE_PROTOCOL_VERSION (0x0010) 76#define HV_CONNECT_PAYLOAD_BYTE_COUNT 64 77 78/* #define VMBUS_REVISION_NUMBER 6 */ 79 80/* Our local vmbus's port and connection id. Anything >0 is fine */ 81/* #define VMBUS_PORT_ID 11 */ 82 83/* 628180B8-308D-4c5e-B7DB-1BEB62E62EF4 */ 84static const struct hv_guid VMBUS_SERVICE_ID = { 85 .data = { 86 0xb8, 0x80, 0x81, 0x62, 0x8d, 0x30, 0x5e, 0x4c, 87 0xb7, 0xdb, 0x1b, 0xeb, 0x62, 0xe6, 0x2e, 0xf4 88 }, 89}; 90 91#define MAX_NUM_CPUS 32 92 93 94struct hv_input_signal_event_buffer { 95 u64 Align8; 96 struct hv_input_signal_event Event; 97}; 98 99struct hv_context { 100 /* We only support running on top of Hyper-V 101 * So at this point this really can only contain the Hyper-V ID 102 */ 103 u64 GuestId; 104 105 void *HypercallPage; 106 107 bool SynICInitialized; 108 109 /* 110 * This is used as an input param to HvCallSignalEvent hypercall. The 111 * input param is immutable in our usage and must be dynamic mem (vs 112 * stack or global). */ 113 struct hv_input_signal_event_buffer *SignalEventBuffer; 114 /* 8-bytes aligned of the buffer above */ 115 struct hv_input_signal_event *SignalEventParam; 116 117 void *synICMessagePage[MAX_NUM_CPUS]; 118 void *synICEventPage[MAX_NUM_CPUS]; 119}; 120 121extern struct hv_context gHvContext; 122 123 124/* Hv Interface */ 125 126extern int HvInit(void); 127 128extern void HvCleanup(void); 129 130extern u16 HvPostMessage(union hv_connection_id connectionId, 131 enum hv_message_type messageType, 132 void *payload, size_t payloadSize); 133 134extern u16 HvSignalEvent(void); 135 136extern void HvSynicInit(void *irqarg); 137 138extern void HvSynicCleanup(void *arg); 139 140#endif /* __HV_H__ */ 141