/*
*
* Copyright (c) 2009, Microsoft Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*
* Authors:
* Haiyang Zhang <haiyangz@microsoft.com>
* Hank Janssen <hjanssen@microsoft.com>
*
*/
#ifndef __HV_H__
#define __HV_H__
#include "hv_api.h"
enum {
VMBUS_MESSAGE_CONNECTION_ID = 1,
VMBUS_MESSAGE_PORT_ID = 1,
VMBUS_EVENT_CONNECTION_ID = 2,
VMBUS_EVENT_PORT_ID = 2,
VMBUS_MONITOR_CONNECTION_ID = 3,
VMBUS_MONITOR_PORT_ID = 3,
VMBUS_MESSAGE_SINT = 2,
};
/* #defines */
#define HV_PRESENT_BIT 0x80000000
#define HV_LINUX_GUEST_ID_LO 0x00000000
#define HV_LINUX_GUEST_ID_HI 0xB16B00B5
#define HV_LINUX_GUEST_ID (((u64)HV_LINUX_GUEST_ID_HI << 32) | \
HV_LINUX_GUEST_ID_LO)
#define HV_CPU_POWER_MANAGEMENT (1 << 0)
#define HV_RECOMMENDATIONS_MAX 4
#define HV_X64_MAX 5
#define HV_CAPS_MAX 8
#define HV_HYPERCALL_PARAM_ALIGN sizeof(u64)
/* Service definitions */
#define HV_SERVICE_PARENT_PORT (0)
#define HV_SERVICE_PARENT_CONNECTION (0)
#define HV_SERVICE_CONNECT_RESPONSE_SUCCESS (0)
#define HV_SERVICE_CONNECT_RESPONSE_INVALID_PARAMETER (1)
#define HV_SERVICE_CONNECT_RESPONSE_UNKNOWN_SERVICE (2)
#define HV_SERVICE_CONNECT_RESPONSE_CONNECTION_REJECTED (3)
#define HV_SERVICE_CONNECT_REQUEST_MESSAGE_ID (1)
#define HV_SERVICE_CONNECT_RESPONSE_MESSAGE_ID (2)
#define HV_SERVICE_DISCONNECT_REQUEST_MESSAGE_ID (3)
#define HV_SERVICE_DISCONNECT_RESPONSE_MESSAGE_ID (4)
#define HV_SERVICE_MAX_MESSAGE_ID (4)
#define HV_SERVICE_PROTOCOL_VERSION (0x0010)
#define HV_CONNECT_PAYLOAD_BYTE_COUNT 64
/* #define VMBUS_REVISION_NUMBER 6 */
/* Our local vmbus's port and connection id. Anything >0 is fine */
/* #define VMBUS_PORT_ID 11 */
/* 628180B8-308D-4c5e-B7DB-1BEB62E62EF4 */
static const struct hv_guid VMBUS_SERVICE_ID = {
.data = {
0xb8, 0x80, 0x81, 0x62, 0x8d, 0x30, 0x5e, 0x4c,
0xb7, 0xdb, 0x1b, 0xeb, 0x62, 0xe6, 0x2e, 0xf4
},
};
#define MAX_NUM_CPUS 32
struct hv_input_signal_event_buffer {
u64 align8;
struct hv_input_signal_event event;
};
struct hv_context {
/* We only support running on top of Hyper-V
* So at this point this really can only contain the Hyper-V ID
*/
u64 guestid;
void *hypercall_page;
bool synic_initialized;
/*
* This is used as an input param to HvCallSignalEvent hypercall. The
* input param is immutable in our usage and must be dynamic mem (vs
* stack or global). */
struct hv_input_signal_event_buffer *signal_event_buffer;
/* 8-bytes aligned of the buffer above */
struct hv_input_signal_event *signal_event_param;
void *synic_message_page[MAX_NUM_CPUS];
void *synic_event_page[MAX_NUM_CPUS];
};
extern struct hv_context hv_context;
/* Hv Interface */
extern int hv_init(void);
extern void hv_cleanup(void);
extern u16 hv_post_message(union hv_connection_id connection_id,
enum hv_message_type message_type,
void *payload, size_t payload_size);
extern u16 hv_signal_event(void);
extern void hv_synic_init(void *irqarg);
extern void hv_synic_cleanup(void *arg);
#endif /* __HV_H__ */
