| /* |
| * |
| * Copyright (c) 2011, 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> |
| * K. Y. Srinivasan <kys@microsoft.com> |
| * |
| */ |
| |
| #ifndef _HYPERV_H |
| #define _HYPERV_H |
| |
| #include <linux/types.h> |
| |
| /* |
| * Framework version for util services. |
| */ |
| |
| #define UTIL_FW_MAJOR 3 |
| #define UTIL_FW_MINOR 0 |
| #define UTIL_FW_MAJOR_MINOR (UTIL_FW_MAJOR << 16 | UTIL_FW_MINOR) |
| |
| |
| /* |
| * Implementation of host controlled snapshot of the guest. |
| */ |
| |
| #define VSS_OP_REGISTER 128 |
| |
| enum hv_vss_op { |
| VSS_OP_CREATE = 0, |
| VSS_OP_DELETE, |
| VSS_OP_HOT_BACKUP, |
| VSS_OP_GET_DM_INFO, |
| VSS_OP_BU_COMPLETE, |
| /* |
| * Following operations are only supported with IC version >= 5.0 |
| */ |
| VSS_OP_FREEZE, /* Freeze the file systems in the VM */ |
| VSS_OP_THAW, /* Unfreeze the file systems */ |
| VSS_OP_AUTO_RECOVER, |
| VSS_OP_COUNT /* Number of operations, must be last */ |
| }; |
| |
| |
| /* |
| * Header for all VSS messages. |
| */ |
| struct hv_vss_hdr { |
| __u8 operation; |
| __u8 reserved[7]; |
| } __attribute__((packed)); |
| |
| |
| /* |
| * Flag values for the hv_vss_check_feature. Linux supports only |
| * one value. |
| */ |
| #define VSS_HBU_NO_AUTO_RECOVERY 0x00000005 |
| |
| struct hv_vss_check_feature { |
| __u32 flags; |
| } __attribute__((packed)); |
| |
| struct hv_vss_check_dm_info { |
| __u32 flags; |
| } __attribute__((packed)); |
| |
| struct hv_vss_msg { |
| union { |
| struct hv_vss_hdr vss_hdr; |
| int error; |
| }; |
| union { |
| struct hv_vss_check_feature vss_cf; |
| struct hv_vss_check_dm_info dm_info; |
| }; |
| } __attribute__((packed)); |
| |
| /* |
| * An implementation of HyperV key value pair (KVP) functionality for Linux. |
| * |
| * |
| * Copyright (C) 2010, Novell, Inc. |
| * Author : K. Y. Srinivasan <ksrinivasan@novell.com> |
| * |
| */ |
| |
| /* |
| * Maximum value size - used for both key names and value data, and includes |
| * any applicable NULL terminators. |
| * |
| * Note: This limit is somewhat arbitrary, but falls easily within what is |
| * supported for all native guests (back to Win 2000) and what is reasonable |
| * for the IC KVP exchange functionality. Note that Windows Me/98/95 are |
| * limited to 255 character key names. |
| * |
| * MSDN recommends not storing data values larger than 2048 bytes in the |
| * registry. |
| * |
| * Note: This value is used in defining the KVP exchange message - this value |
| * cannot be modified without affecting the message size and compatibility. |
| */ |
| |
| /* |
| * bytes, including any null terminators |
| */ |
| #define HV_KVP_EXCHANGE_MAX_VALUE_SIZE (2048) |
| |
| |
| /* |
| * Maximum key size - the registry limit for the length of an entry name |
| * is 256 characters, including the null terminator |
| */ |
| |
| #define HV_KVP_EXCHANGE_MAX_KEY_SIZE (512) |
| |
| /* |
| * In Linux, we implement the KVP functionality in two components: |
| * 1) The kernel component which is packaged as part of the hv_utils driver |
| * is responsible for communicating with the host and responsible for |
| * implementing the host/guest protocol. 2) A user level daemon that is |
| * responsible for data gathering. |
| * |
| * Host/Guest Protocol: The host iterates over an index and expects the guest |
| * to assign a key name to the index and also return the value corresponding to |
| * the key. The host will have atmost one KVP transaction outstanding at any |
| * given point in time. The host side iteration stops when the guest returns |
| * an error. Microsoft has specified the following mapping of key names to |
| * host specified index: |
| * |
| * Index Key Name |
| * 0 FullyQualifiedDomainName |
| * 1 IntegrationServicesVersion |
| * 2 NetworkAddressIPv4 |
| * 3 NetworkAddressIPv6 |
| * 4 OSBuildNumber |
| * 5 OSName |
| * 6 OSMajorVersion |
| * 7 OSMinorVersion |
| * 8 OSVersion |
| * 9 ProcessorArchitecture |
| * |
| * The Windows host expects the Key Name and Key Value to be encoded in utf16. |
| * |
| * Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the |
| * data gathering functionality in a user mode daemon. The user level daemon |
| * is also responsible for binding the key name to the index as well. The |
| * kernel and user-level daemon communicate using a connector channel. |
| * |
| * The user mode component first registers with the |
| * the kernel component. Subsequently, the kernel component requests, data |
| * for the specified keys. In response to this message the user mode component |
| * fills in the value corresponding to the specified key. We overload the |
| * sequence field in the cn_msg header to define our KVP message types. |
| * |
| * |
| * The kernel component simply acts as a conduit for communication between the |
| * Windows host and the user-level daemon. The kernel component passes up the |
| * index received from the Host to the user-level daemon. If the index is |
| * valid (supported), the corresponding key as well as its |
| * value (both are strings) is returned. If the index is invalid |
| * (not supported), a NULL key string is returned. |
| */ |
| |
| |
| /* |
| * Registry value types. |
| */ |
| |
| #define REG_SZ 1 |
| #define REG_U32 4 |
| #define REG_U64 8 |
| |
| /* |
| * As we look at expanding the KVP functionality to include |
| * IP injection functionality, we need to maintain binary |
| * compatibility with older daemons. |
| * |
| * The KVP opcodes are defined by the host and it was unfortunate |
| * that I chose to treat the registration operation as part of the |
| * KVP operations defined by the host. |
| * Here is the level of compatibility |
| * (between the user level daemon and the kernel KVP driver) that we |
| * will implement: |
| * |
| * An older daemon will always be supported on a newer driver. |
| * A given user level daemon will require a minimal version of the |
| * kernel driver. |
| * If we cannot handle the version differences, we will fail gracefully |
| * (this can happen when we have a user level daemon that is more |
| * advanced than the KVP driver. |
| * |
| * We will use values used in this handshake for determining if we have |
| * workable user level daemon and the kernel driver. We begin by taking the |
| * registration opcode out of the KVP opcode namespace. We will however, |
| * maintain compatibility with the existing user-level daemon code. |
| */ |
| |
| /* |
| * Daemon code not supporting IP injection (legacy daemon). |
| */ |
| |
| #define KVP_OP_REGISTER 4 |
| |
| /* |
| * Daemon code supporting IP injection. |
| * The KVP opcode field is used to communicate the |
| * registration information; so define a namespace that |
| * will be distinct from the host defined KVP opcode. |
| */ |
| |
| #define KVP_OP_REGISTER1 100 |
| |
| enum hv_kvp_exchg_op { |
| KVP_OP_GET = 0, |
| KVP_OP_SET, |
| KVP_OP_DELETE, |
| KVP_OP_ENUMERATE, |
| KVP_OP_GET_IP_INFO, |
| KVP_OP_SET_IP_INFO, |
| KVP_OP_COUNT /* Number of operations, must be last. */ |
| }; |
| |
| enum hv_kvp_exchg_pool { |
| KVP_POOL_EXTERNAL = 0, |
| KVP_POOL_GUEST, |
| KVP_POOL_AUTO, |
| KVP_POOL_AUTO_EXTERNAL, |
| KVP_POOL_AUTO_INTERNAL, |
| KVP_POOL_COUNT /* Number of pools, must be last. */ |
| }; |
| |
| /* |
| * Some Hyper-V status codes. |
| */ |
| |
| #define HV_S_OK 0x00000000 |
| #define HV_E_FAIL 0x80004005 |
| #define HV_S_CONT 0x80070103 |
| #define HV_ERROR_NOT_SUPPORTED 0x80070032 |
| #define HV_ERROR_MACHINE_LOCKED 0x800704F7 |
| #define HV_ERROR_DEVICE_NOT_CONNECTED 0x8007048F |
| #define HV_INVALIDARG 0x80070057 |
| #define HV_GUID_NOTFOUND 0x80041002 |
| |
| #define ADDR_FAMILY_NONE 0x00 |
| #define ADDR_FAMILY_IPV4 0x01 |
| #define ADDR_FAMILY_IPV6 0x02 |
| |
| #define MAX_ADAPTER_ID_SIZE 128 |
| #define MAX_IP_ADDR_SIZE 1024 |
| #define MAX_GATEWAY_SIZE 512 |
| |
| |
| struct hv_kvp_ipaddr_value { |
| __u16 adapter_id[MAX_ADAPTER_ID_SIZE]; |
| __u8 addr_family; |
| __u8 dhcp_enabled; |
| __u16 ip_addr[MAX_IP_ADDR_SIZE]; |
| __u16 sub_net[MAX_IP_ADDR_SIZE]; |
| __u16 gate_way[MAX_GATEWAY_SIZE]; |
| __u16 dns_addr[MAX_IP_ADDR_SIZE]; |
| } __attribute__((packed)); |
| |
| |
| struct hv_kvp_hdr { |
| __u8 operation; |
| __u8 pool; |
| __u16 pad; |
| } __attribute__((packed)); |
| |
| struct hv_kvp_exchg_msg_value { |
| __u32 value_type; |
| __u32 key_size; |
| __u32 value_size; |
| __u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; |
| union { |
| __u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; |
| __u32 value_u32; |
| __u64 value_u64; |
| }; |
| } __attribute__((packed)); |
| |
| struct hv_kvp_msg_enumerate { |
| __u32 index; |
| struct hv_kvp_exchg_msg_value data; |
| } __attribute__((packed)); |
| |
| struct hv_kvp_msg_get { |
| struct hv_kvp_exchg_msg_value data; |
| }; |
| |
| struct hv_kvp_msg_set { |
| struct hv_kvp_exchg_msg_value data; |
| }; |
| |
| struct hv_kvp_msg_delete { |
| __u32 key_size; |
| __u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; |
| }; |
| |
| struct hv_kvp_register { |
| __u8 version[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; |
| }; |
| |
| struct hv_kvp_msg { |
| union { |
| struct hv_kvp_hdr kvp_hdr; |
| int error; |
| }; |
| union { |
| struct hv_kvp_msg_get kvp_get; |
| struct hv_kvp_msg_set kvp_set; |
| struct hv_kvp_msg_delete kvp_delete; |
| struct hv_kvp_msg_enumerate kvp_enum_data; |
| struct hv_kvp_ipaddr_value kvp_ip_val; |
| struct hv_kvp_register kvp_register; |
| } body; |
| } __attribute__((packed)); |
| |
| struct hv_kvp_ip_msg { |
| __u8 operation; |
| __u8 pool; |
| struct hv_kvp_ipaddr_value kvp_ip_val; |
| } __attribute__((packed)); |
| |
| #ifdef __KERNEL__ |
| #include <linux/scatterlist.h> |
| #include <linux/list.h> |
| #include <linux/uuid.h> |
| #include <linux/timer.h> |
| #include <linux/workqueue.h> |
| #include <linux/completion.h> |
| #include <linux/device.h> |
| #include <linux/mod_devicetable.h> |
| |
| |
| #define MAX_PAGE_BUFFER_COUNT 19 |
| #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ |
| |
| #pragma pack(push, 1) |
| |
| /* Single-page buffer */ |
| struct hv_page_buffer { |
| u32 len; |
| u32 offset; |
| u64 pfn; |
| }; |
| |
| /* Multiple-page buffer */ |
| struct hv_multipage_buffer { |
| /* Length and Offset determines the # of pfns in the array */ |
| u32 len; |
| u32 offset; |
| u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT]; |
| }; |
| |
| /* 0x18 includes the proprietary packet header */ |
| #define MAX_PAGE_BUFFER_PACKET (0x18 + \ |
| (sizeof(struct hv_page_buffer) * \ |
| MAX_PAGE_BUFFER_COUNT)) |
| #define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \ |
| sizeof(struct hv_multipage_buffer)) |
| |
| |
| #pragma pack(pop) |
| |
| struct hv_ring_buffer { |
| /* Offset in bytes from the start of ring data below */ |
| u32 write_index; |
| |
| /* Offset in bytes from the start of ring data below */ |
| u32 read_index; |
| |
| u32 interrupt_mask; |
| |
| /* |
| * Win8 uses some of the reserved bits to implement |
| * interrupt driven flow management. On the send side |
| * we can request that the receiver interrupt the sender |
| * when the ring transitions from being full to being able |
| * to handle a message of size "pending_send_sz". |
| * |
| * Add necessary state for this enhancement. |
| */ |
| u32 pending_send_sz; |
| |
| u32 reserved1[12]; |
| |
| union { |
| struct { |
| u32 feat_pending_send_sz:1; |
| }; |
| u32 value; |
| } feature_bits; |
| |
| /* Pad it to PAGE_SIZE so that data starts on page boundary */ |
| u8 reserved2[4028]; |
| |
| /* |
| * Ring data starts here + RingDataStartOffset |
| * !!! DO NOT place any fields below this !!! |
| */ |
| u8 buffer[0]; |
| } __packed; |
| |
| struct hv_ring_buffer_info { |
| struct hv_ring_buffer *ring_buffer; |
| u32 ring_size; /* Include the shared header */ |
| spinlock_t ring_lock; |
| |
| u32 ring_datasize; /* < ring_size */ |
| u32 ring_data_startoffset; |
| }; |
| |
| /* |
| * |
| * hv_get_ringbuffer_availbytes() |
| * |
| * Get number of bytes available to read and to write to |
| * for the specified ring buffer |
| */ |
| static inline void |
| hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, |
| u32 *read, u32 *write) |
| { |
| u32 read_loc, write_loc, dsize; |
| |
| smp_read_barrier_depends(); |
| |
| /* Capture the read/write indices before they changed */ |
| read_loc = rbi->ring_buffer->read_index; |
| write_loc = rbi->ring_buffer->write_index; |
| dsize = rbi->ring_datasize; |
| |
| *write = write_loc >= read_loc ? dsize - (write_loc - read_loc) : |
| read_loc - write_loc; |
| *read = dsize - *write; |
| } |
| |
| /* |
| * VMBUS version is 32 bit entity broken up into |
| * two 16 bit quantities: major_number. minor_number. |
| * |
| * 0 . 13 (Windows Server 2008) |
| * 1 . 1 (Windows 7) |
| * 2 . 4 (Windows 8) |
| */ |
| |
| #define VERSION_WS2008 ((0 << 16) | (13)) |
| #define VERSION_WIN7 ((1 << 16) | (1)) |
| #define VERSION_WIN8 ((2 << 16) | (4)) |
| |
| #define VERSION_INVAL -1 |
| |
| #define VERSION_CURRENT VERSION_WIN8 |
| |
| /* Make maximum size of pipe payload of 16K */ |
| #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) |
| |
| /* Define PipeMode values. */ |
| #define VMBUS_PIPE_TYPE_BYTE 0x00000000 |
| #define VMBUS_PIPE_TYPE_MESSAGE 0x00000004 |
| |
| /* The size of the user defined data buffer for non-pipe offers. */ |
| #define MAX_USER_DEFINED_BYTES 120 |
| |
| /* The size of the user defined data buffer for pipe offers. */ |
| #define MAX_PIPE_USER_DEFINED_BYTES 116 |
| |
| /* |
| * At the center of the Channel Management library is the Channel Offer. This |
| * struct contains the fundamental information about an offer. |
| */ |
| struct vmbus_channel_offer { |
| uuid_le if_type; |
| uuid_le if_instance; |
| |
| /* |
| * These two fields are not currently used. |
| */ |
| u64 reserved1; |
| u64 reserved2; |
| |
| u16 chn_flags; |
| u16 mmio_megabytes; /* in bytes * 1024 * 1024 */ |
| |
| union { |
| /* Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes. */ |
| struct { |
| unsigned char user_def[MAX_USER_DEFINED_BYTES]; |
| } std; |
| |
| /* |
| * Pipes: |
| * The following sructure is an integrated pipe protocol, which |
| * is implemented on top of standard user-defined data. Pipe |
| * clients have MAX_PIPE_USER_DEFINED_BYTES left for their own |
| * use. |
| */ |
| struct { |
| u32 pipe_mode; |
| unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES]; |
| } pipe; |
| } u; |
| /* |
| * The sub_channel_index is defined in win8. |
| */ |
| u16 sub_channel_index; |
| u16 reserved3; |
| } __packed; |
| |
| /* Server Flags */ |
| #define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1 |
| #define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2 |
| #define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4 |
| #define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10 |
| #define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100 |
| #define VMBUS_CHANNEL_PARENT_OFFER 0x200 |
| #define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400 |
| |
| struct vmpacket_descriptor { |
| u16 type; |
| u16 offset8; |
| u16 len8; |
| u16 flags; |
| u64 trans_id; |
| } __packed; |
| |
| struct vmpacket_header { |
| u32 prev_pkt_start_offset; |
| struct vmpacket_descriptor descriptor; |
| } __packed; |
| |
| struct vmtransfer_page_range { |
| u32 byte_count; |
| u32 byte_offset; |
| } __packed; |
| |
| struct vmtransfer_page_packet_header { |
| struct vmpacket_descriptor d; |
| u16 xfer_pageset_id; |
| u8 sender_owns_set; |
| u8 reserved; |
| u32 range_cnt; |
| struct vmtransfer_page_range ranges[1]; |
| } __packed; |
| |
| struct vmgpadl_packet_header { |
| struct vmpacket_descriptor d; |
| u32 gpadl; |
| u32 reserved; |
| } __packed; |
| |
| struct vmadd_remove_transfer_page_set { |
| struct vmpacket_descriptor d; |
| u32 gpadl; |
| u16 xfer_pageset_id; |
| u16 reserved; |
| } __packed; |
| |
| /* |
| * This structure defines a range in guest physical space that can be made to |
| * look virtually contiguous. |
| */ |
| struct gpa_range { |
| u32 byte_count; |
| u32 byte_offset; |
| u64 pfn_array[0]; |
| }; |
| |
| /* |
| * This is the format for an Establish Gpadl packet, which contains a handle by |
| * which this GPADL will be known and a set of GPA ranges associated with it. |
| * This can be converted to a MDL by the guest OS. If there are multiple GPA |
| * ranges, then the resulting MDL will be "chained," representing multiple VA |
| * ranges. |
| */ |
| struct vmestablish_gpadl { |
| struct vmpacket_descriptor d; |
| u32 gpadl; |
| u32 range_cnt; |
| struct gpa_range range[1]; |
| } __packed; |
| |
| /* |
| * This is the format for a Teardown Gpadl packet, which indicates that the |
| * GPADL handle in the Establish Gpadl packet will never be referenced again. |
| */ |
| struct vmteardown_gpadl { |
| struct vmpacket_descriptor d; |
| u32 gpadl; |
| u32 reserved; /* for alignment to a 8-byte boundary */ |
| } __packed; |
| |
| /* |
| * This is the format for a GPA-Direct packet, which contains a set of GPA |
| * ranges, in addition to commands and/or data. |
| */ |
| struct vmdata_gpa_direct { |
| struct vmpacket_descriptor d; |
| u32 reserved; |
| u32 range_cnt; |
| struct gpa_range range[1]; |
| } __packed; |
| |
| /* This is the format for a Additional Data Packet. */ |
| struct vmadditional_data { |
| struct vmpacket_descriptor d; |
| u64 total_bytes; |
| u32 offset; |
| u32 byte_cnt; |
| unsigned char data[1]; |
| } __packed; |
| |
| union vmpacket_largest_possible_header { |
| struct vmpacket_descriptor simple_hdr; |
| struct vmtransfer_page_packet_header xfer_page_hdr; |
| struct vmgpadl_packet_header gpadl_hdr; |
| struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr; |
| struct vmestablish_gpadl establish_gpadl_hdr; |
| struct vmteardown_gpadl teardown_gpadl_hdr; |
| struct vmdata_gpa_direct data_gpa_direct_hdr; |
| }; |
| |
| #define VMPACKET_DATA_START_ADDRESS(__packet) \ |
| (void *)(((unsigned char *)__packet) + \ |
| ((struct vmpacket_descriptor)__packet)->offset8 * 8) |
| |
| #define VMPACKET_DATA_LENGTH(__packet) \ |
| ((((struct vmpacket_descriptor)__packet)->len8 - \ |
| ((struct vmpacket_descriptor)__packet)->offset8) * 8) |
| |
| #define VMPACKET_TRANSFER_MODE(__packet) \ |
| (((struct IMPACT)__packet)->type) |
| |
| enum vmbus_packet_type { |
| VM_PKT_INVALID = 0x0, |
| VM_PKT_SYNCH = 0x1, |
| VM_PKT_ADD_XFER_PAGESET = 0x2, |
| VM_PKT_RM_XFER_PAGESET = 0x3, |
| VM_PKT_ESTABLISH_GPADL = 0x4, |
| VM_PKT_TEARDOWN_GPADL = 0x5, |
| VM_PKT_DATA_INBAND = 0x6, |
| VM_PKT_DATA_USING_XFER_PAGES = 0x7, |
| VM_PKT_DATA_USING_GPADL = 0x8, |
| VM_PKT_DATA_USING_GPA_DIRECT = 0x9, |
| VM_PKT_CANCEL_REQUEST = 0xa, |
| VM_PKT_COMP = 0xb, |
| VM_PKT_DATA_USING_ADDITIONAL_PKT = 0xc, |
| VM_PKT_ADDITIONAL_DATA = 0xd |
| }; |
| |
| #define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1 |
| |
| |
| /* Version 1 messages */ |
| enum vmbus_channel_message_type { |
| CHANNELMSG_INVALID = 0, |
| CHANNELMSG_OFFERCHANNEL = 1, |
| CHANNELMSG_RESCIND_CHANNELOFFER = 2, |
| CHANNELMSG_REQUESTOFFERS = 3, |
| CHANNELMSG_ALLOFFERS_DELIVERED = 4, |
| CHANNELMSG_OPENCHANNEL = 5, |
| CHANNELMSG_OPENCHANNEL_RESULT = 6, |
| CHANNELMSG_CLOSECHANNEL = 7, |
| CHANNELMSG_GPADL_HEADER = 8, |
| CHANNELMSG_GPADL_BODY = 9, |
| CHANNELMSG_GPADL_CREATED = 10, |
| CHANNELMSG_GPADL_TEARDOWN = 11, |
| CHANNELMSG_GPADL_TORNDOWN = 12, |
| CHANNELMSG_RELID_RELEASED = 13, |
| CHANNELMSG_INITIATE_CONTACT = 14, |
| CHANNELMSG_VERSION_RESPONSE = 15, |
| CHANNELMSG_UNLOAD = 16, |
| #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD |
| CHANNELMSG_VIEWRANGE_ADD = 17, |
| CHANNELMSG_VIEWRANGE_REMOVE = 18, |
| #endif |
| CHANNELMSG_COUNT |
| }; |
| |
| struct vmbus_channel_message_header { |
| enum vmbus_channel_message_type msgtype; |
| u32 padding; |
| } __packed; |
| |
| /* Query VMBus Version parameters */ |
| struct vmbus_channel_query_vmbus_version { |
| struct vmbus_channel_message_header header; |
| u32 version; |
| } __packed; |
| |
| /* VMBus Version Supported parameters */ |
| struct vmbus_channel_version_supported { |
| struct vmbus_channel_message_header header; |
| u8 version_supported; |
| } __packed; |
| |
| /* Offer Channel parameters */ |
| struct vmbus_channel_offer_channel { |
| struct vmbus_channel_message_header header; |
| struct vmbus_channel_offer offer; |
| u32 child_relid; |
| u8 monitorid; |
| /* |
| * win7 and beyond splits this field into a bit field. |
| */ |
| u8 monitor_allocated:1; |
| u8 reserved:7; |
| /* |
| * These are new fields added in win7 and later. |
| * Do not access these fields without checking the |
| * negotiated protocol. |
| * |
| * If "is_dedicated_interrupt" is set, we must not set the |
| * associated bit in the channel bitmap while sending the |
| * interrupt to the host. |
| * |
| * connection_id is to be used in signaling the host. |
| */ |
| u16 is_dedicated_interrupt:1; |
| u16 reserved1:15; |
| u32 connection_id; |
| } __packed; |
| |
| /* Rescind Offer parameters */ |
| struct vmbus_channel_rescind_offer { |
| struct vmbus_channel_message_header header; |
| u32 child_relid; |
| } __packed; |
| |
| /* |
| * Request Offer -- no parameters, SynIC message contains the partition ID |
| * Set Snoop -- no parameters, SynIC message contains the partition ID |
| * Clear Snoop -- no parameters, SynIC message contains the partition ID |
| * All Offers Delivered -- no parameters, SynIC message contains the partition |
| * ID |
| * Flush Client -- no parameters, SynIC message contains the partition ID |
| */ |
| |
| /* Open Channel parameters */ |
| struct vmbus_channel_open_channel { |
| struct vmbus_channel_message_header header; |
| |
| /* Identifies the specific VMBus channel that is being opened. */ |
| u32 child_relid; |
| |
| /* ID making a particular open request at a channel offer unique. */ |
| u32 openid; |
| |
| /* GPADL for the channel's ring buffer. */ |
| u32 ringbuffer_gpadlhandle; |
| |
| /* |
| * Starting with win8, this field will be used to specify |
| * the target virtual processor on which to deliver the interrupt for |
| * the host to guest communication. |
| * Prior to win8, incoming channel interrupts would only |
| * be delivered on cpu 0. Setting this value to 0 would |
| * preserve the earlier behavior. |
| */ |
| u32 target_vp; |
| |
| /* |
| * The upstream ring buffer begins at offset zero in the memory |
| * described by RingBufferGpadlHandle. The downstream ring buffer |
| * follows it at this offset (in pages). |
| */ |
| u32 downstream_ringbuffer_pageoffset; |
| |
| /* User-specific data to be passed along to the server endpoint. */ |
| unsigned char userdata[MAX_USER_DEFINED_BYTES]; |
| } __packed; |
| |
| /* Open Channel Result parameters */ |
| struct vmbus_channel_open_result { |
| struct vmbus_channel_message_header header; |
| u32 child_relid; |
| u32 openid; |
| u32 status; |
| } __packed; |
| |
| /* Close channel parameters; */ |
| struct vmbus_channel_close_channel { |
| struct vmbus_channel_message_header header; |
| u32 child_relid; |
| } __packed; |
| |
| /* Channel Message GPADL */ |
| #define GPADL_TYPE_RING_BUFFER 1 |
| #define GPADL_TYPE_SERVER_SAVE_AREA 2 |
| #define GPADL_TYPE_TRANSACTION 8 |
| |
| /* |
| * The number of PFNs in a GPADL message is defined by the number of |
| * pages that would be spanned by ByteCount and ByteOffset. If the |
| * implied number of PFNs won't fit in this packet, there will be a |
| * follow-up packet that contains more. |
| */ |
| struct vmbus_channel_gpadl_header { |
| struct vmbus_channel_message_header header; |
| u32 child_relid; |
| u32 gpadl; |
| u16 range_buflen; |
| u16 rangecount; |
| struct gpa_range range[0]; |
| } __packed; |
| |
| /* This is the followup packet that contains more PFNs. */ |
| struct vmbus_channel_gpadl_body { |
| struct vmbus_channel_message_header header; |
| u32 msgnumber; |
| u32 gpadl; |
| u64 pfn[0]; |
| } __packed; |
| |
| struct vmbus_channel_gpadl_created { |
| struct vmbus_channel_message_header header; |
| u32 child_relid; |
| u32 gpadl; |
| u32 creation_status; |
| } __packed; |
| |
| struct vmbus_channel_gpadl_teardown { |
| struct vmbus_channel_message_header header; |
| u32 child_relid; |
| u32 gpadl; |
| } __packed; |
| |
| struct vmbus_channel_gpadl_torndown { |
| struct vmbus_channel_message_header header; |
| u32 gpadl; |
| } __packed; |
| |
| #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD |
| struct vmbus_channel_view_range_add { |
| struct vmbus_channel_message_header header; |
| PHYSICAL_ADDRESS viewrange_base; |
| u64 viewrange_length; |
| u32 child_relid; |
| } __packed; |
| |
| struct vmbus_channel_view_range_remove { |
| struct vmbus_channel_message_header header; |
| PHYSICAL_ADDRESS viewrange_base; |
| u32 child_relid; |
| } __packed; |
| #endif |
| |
| struct vmbus_channel_relid_released { |
| struct vmbus_channel_message_header header; |
| u32 child_relid; |
| } __packed; |
| |
| struct vmbus_channel_initiate_contact { |
| struct vmbus_channel_message_header header; |
| u32 vmbus_version_requested; |
| u32 padding2; |
| u64 interrupt_page; |
| u64 monitor_page1; |
| u64 monitor_page2; |
| } __packed; |
| |
| struct vmbus_channel_version_response { |
| struct vmbus_channel_message_header header; |
| u8 version_supported; |
| } __packed; |
| |
| enum vmbus_channel_state { |
| CHANNEL_OFFER_STATE, |
| CHANNEL_OPENING_STATE, |
| CHANNEL_OPEN_STATE, |
| CHANNEL_OPENED_STATE, |
| }; |
| |
| /* |
| * Represents each channel msg on the vmbus connection This is a |
| * variable-size data structure depending on the msg type itself |
| */ |
| struct vmbus_channel_msginfo { |
| /* Bookkeeping stuff */ |
| struct list_head msglistentry; |
| |
| /* So far, this is only used to handle gpadl body message */ |
| struct list_head submsglist; |
| |
| /* Synchronize the request/response if needed */ |
| struct completion waitevent; |
| union { |
| struct vmbus_channel_version_supported version_supported; |
| struct vmbus_channel_open_result open_result; |
| struct vmbus_channel_gpadl_torndown gpadl_torndown; |
| struct vmbus_channel_gpadl_created gpadl_created; |
| struct vmbus_channel_version_response version_response; |
| } response; |
| |
| u32 msgsize; |
| /* |
| * The channel message that goes out on the "wire". |
| * It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header |
| */ |
| unsigned char msg[0]; |
| }; |
| |
| struct vmbus_close_msg { |
| struct vmbus_channel_msginfo info; |
| struct vmbus_channel_close_channel msg; |
| }; |
| |
| /* Define connection identifier type. */ |
| union hv_connection_id { |
| u32 asu32; |
| struct { |
| u32 id:24; |
| u32 reserved:8; |
| } u; |
| }; |
| |
| /* Definition of the hv_signal_event hypercall input structure. */ |
| struct hv_input_signal_event { |
| union hv_connection_id connectionid; |
| u16 flag_number; |
| u16 rsvdz; |
| }; |
| |
| struct hv_input_signal_event_buffer { |
| u64 align8; |
| struct hv_input_signal_event event; |
| }; |
| |
| struct vmbus_channel { |
| struct list_head listentry; |
| |
| struct hv_device *device_obj; |
| |
| struct work_struct work; |
| |
| enum vmbus_channel_state state; |
| |
| struct vmbus_channel_offer_channel offermsg; |
| /* |
| * These are based on the OfferMsg.MonitorId. |
| * Save it here for easy access. |
| */ |
| u8 monitor_grp; |
| u8 monitor_bit; |
| |
| u32 ringbuffer_gpadlhandle; |
| |
| /* Allocated memory for ring buffer */ |
| void *ringbuffer_pages; |
| u32 ringbuffer_pagecount; |
| struct hv_ring_buffer_info outbound; /* send to parent */ |
| struct hv_ring_buffer_info inbound; /* receive from parent */ |
| spinlock_t inbound_lock; |
| struct workqueue_struct *controlwq; |
| |
| struct vmbus_close_msg close_msg; |
| |
| /* Channel callback are invoked in this workqueue context */ |
| /* HANDLE dataWorkQueue; */ |
| |
| void (*onchannel_callback)(void *context); |
| void *channel_callback_context; |
| |
| /* |
| * A channel can be marked for efficient (batched) |
| * reading: |
| * If batched_reading is set to "true", we read until the |
| * channel is empty and hold off interrupts from the host |
| * during the entire read process. |
| * If batched_reading is set to "false", the client is not |
| * going to perform batched reading. |
| * |
| * By default we will enable batched reading; specific |
| * drivers that don't want this behavior can turn it off. |
| */ |
| |
| bool batched_reading; |
| |
| bool is_dedicated_interrupt; |
| struct hv_input_signal_event_buffer sig_buf; |
| struct hv_input_signal_event *sig_event; |
| |
| /* |
| * Starting with win8, this field will be used to specify |
| * the target virtual processor on which to deliver the interrupt for |
| * the host to guest communication. |
| * Prior to win8, incoming channel interrupts would only |
| * be delivered on cpu 0. Setting this value to 0 would |
| * preserve the earlier behavior. |
| */ |
| u32 target_vp; |
| /* |
| * Support for sub-channels. For high performance devices, |
| * it will be useful to have multiple sub-channels to support |
| * a scalable communication infrastructure with the host. |
| * The support for sub-channels is implemented as an extention |
| * to the current infrastructure. |
| * The initial offer is considered the primary channel and this |
| * offer message will indicate if the host supports sub-channels. |
| * The guest is free to ask for sub-channels to be offerred and can |
| * open these sub-channels as a normal "primary" channel. However, |
| * all sub-channels will have the same type and instance guids as the |
| * primary channel. Requests sent on a given channel will result in a |
| * response on the same channel. |
| */ |
| |
| /* |
| * Sub-channel creation callback. This callback will be called in |
| * process context when a sub-channel offer is received from the host. |
| * The guest can open the sub-channel in the context of this callback. |
| */ |
| void (*sc_creation_callback)(struct vmbus_channel *new_sc); |
| |
| spinlock_t sc_lock; |
| /* |
| * All Sub-channels of a primary channel are linked here. |
| */ |
| struct list_head sc_list; |
| /* |
| * The primary channel this sub-channel belongs to. |
| * This will be NULL for the primary channel. |
| */ |
| struct vmbus_channel *primary_channel; |
| }; |
| |
| static inline void set_channel_read_state(struct vmbus_channel *c, bool state) |
| { |
| c->batched_reading = state; |
| } |
| |
| void vmbus_onmessage(void *context); |
| |
| int vmbus_request_offers(void); |
| |
| /* |
| * APIs for managing sub-channels. |
| */ |
| |
| void vmbus_set_sc_create_callback(struct vmbus_channel *primary_channel, |
| void (*sc_cr_cb)(struct vmbus_channel *new_sc)); |
| |
| /* |
| * Retrieve the (sub) channel on which to send an outgoing request. |
| * When a primary channel has multiple sub-channels, we choose a |
| * channel whose VCPU binding is closest to the VCPU on which |
| * this call is being made. |
| */ |
| struct vmbus_channel *vmbus_get_outgoing_channel(struct vmbus_channel *primary); |
| |
| /* |
| * Check if sub-channels have already been offerred. This API will be useful |
| * when the driver is unloaded after establishing sub-channels. In this case, |
| * when the driver is re-loaded, the driver would have to check if the |
| * subchannels have already been established before attempting to request |
| * the creation of sub-channels. |
| * This function returns TRUE to indicate that subchannels have already been |
| * created. |
| * This function should be invoked after setting the callback function for |
| * sub-channel creation. |
| */ |
| bool vmbus_are_subchannels_present(struct vmbus_channel *primary); |
| |
| /* The format must be the same as struct vmdata_gpa_direct */ |
| struct vmbus_channel_packet_page_buffer { |
| u16 type; |
| u16 dataoffset8; |
| u16 length8; |
| u16 flags; |
| u64 transactionid; |
| u32 reserved; |
| u32 rangecount; |
| struct hv_page_buffer range[MAX_PAGE_BUFFER_COUNT]; |
| } __packed; |
| |
| /* The format must be the same as struct vmdata_gpa_direct */ |
| struct vmbus_channel_packet_multipage_buffer { |
| u16 type; |
| u16 dataoffset8; |
| u16 length8; |
| u16 flags; |
| u64 transactionid; |
| u32 reserved; |
| u32 rangecount; /* Always 1 in this case */ |
| struct hv_multipage_buffer range; |
| } __packed; |
| |
| |
| extern int vmbus_open(struct vmbus_channel *channel, |
| u32 send_ringbuffersize, |
| u32 recv_ringbuffersize, |
| void *userdata, |
| u32 userdatalen, |
| void(*onchannel_callback)(void *context), |
| void *context); |
| |
| extern void vmbus_close(struct vmbus_channel *channel); |
| |
| extern int vmbus_sendpacket(struct vmbus_channel *channel, |
| const void *buffer, |
| u32 bufferLen, |
| u64 requestid, |
| enum vmbus_packet_type type, |
| u32 flags); |
| |
| extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, |
| struct hv_page_buffer pagebuffers[], |
| u32 pagecount, |
| void *buffer, |
| u32 bufferlen, |
| u64 requestid); |
| |
| extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, |
| struct hv_multipage_buffer *mpb, |
| void *buffer, |
| u32 bufferlen, |
| u64 requestid); |
| |
| extern int vmbus_establish_gpadl(struct vmbus_channel *channel, |
| void *kbuffer, |
| u32 size, |
| u32 *gpadl_handle); |
| |
| extern int vmbus_teardown_gpadl(struct vmbus_channel *channel, |
| u32 gpadl_handle); |
| |
| extern int vmbus_recvpacket(struct vmbus_channel *channel, |
| void *buffer, |
| u32 bufferlen, |
| u32 *buffer_actual_len, |
| u64 *requestid); |
| |
| extern int vmbus_recvpacket_raw(struct vmbus_channel *channel, |
| void *buffer, |
| u32 bufferlen, |
| u32 *buffer_actual_len, |
| u64 *requestid); |
| |
| |
| extern void vmbus_ontimer(unsigned long data); |
| |
| /* Base driver object */ |
| struct hv_driver { |
| const char *name; |
| |
| /* the device type supported by this driver */ |
| uuid_le dev_type; |
| const struct hv_vmbus_device_id *id_table; |
| |
| struct device_driver driver; |
| |
| int (*probe)(struct hv_device *, const struct hv_vmbus_device_id *); |
| int (*remove)(struct hv_device *); |
| void (*shutdown)(struct hv_device *); |
| |
| }; |
| |
| /* Base device object */ |
| struct hv_device { |
| /* the device type id of this device */ |
| uuid_le dev_type; |
| |
| /* the device instance id of this device */ |
| uuid_le dev_instance; |
| |
| struct device device; |
| |
| struct vmbus_channel *channel; |
| }; |
| |
| |
| static inline struct hv_device *device_to_hv_device(struct device *d) |
| { |
| return container_of(d, struct hv_device, device); |
| } |
| |
| static inline struct hv_driver *drv_to_hv_drv(struct device_driver *d) |
| { |
| return container_of(d, struct hv_driver, driver); |
| } |
| |
| static inline void hv_set_drvdata(struct hv_device *dev, void *data) |
| { |
| dev_set_drvdata(&dev->device, data); |
| } |
| |
| static inline void *hv_get_drvdata(struct hv_device *dev) |
| { |
| return dev_get_drvdata(&dev->device); |
| } |
| |
| /* Vmbus interface */ |
| #define vmbus_driver_register(driver) \ |
| __vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) |
| int __must_check __vmbus_driver_register(struct hv_driver *hv_driver, |
| struct module *owner, |
| const char *mod_name); |
| void vmbus_driver_unregister(struct hv_driver *hv_driver); |
| |
| /** |
| * VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device |
| * |
| * This macro is used to create a struct hv_vmbus_device_id that matches a |
| * specific device. |
| */ |
| #define VMBUS_DEVICE(g0, g1, g2, g3, g4, g5, g6, g7, \ |
| g8, g9, ga, gb, gc, gd, ge, gf) \ |
| .guid = { g0, g1, g2, g3, g4, g5, g6, g7, \ |
| g8, g9, ga, gb, gc, gd, ge, gf }, |
| |
| /* |
| * GUID definitions of various offer types - services offered to the guest. |
| */ |
| |
| /* |
| * Network GUID |
| * {f8615163-df3e-46c5-913f-f2d2f965ed0e} |
| */ |
| #define HV_NIC_GUID \ |
| .guid = { \ |
| 0x63, 0x51, 0x61, 0xf8, 0x3e, 0xdf, 0xc5, 0x46, \ |
| 0x91, 0x3f, 0xf2, 0xd2, 0xf9, 0x65, 0xed, 0x0e \ |
| } |
| |
| /* |
| * IDE GUID |
| * {32412632-86cb-44a2-9b5c-50d1417354f5} |
| */ |
| #define HV_IDE_GUID \ |
| .guid = { \ |
| 0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, \ |
| 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5 \ |
| } |
| |
| /* |
| * SCSI GUID |
| * {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} |
| */ |
| #define HV_SCSI_GUID \ |
| .guid = { \ |
| 0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, \ |
| 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f \ |
| } |
| |
| /* |
| * Shutdown GUID |
| * {0e0b6031-5213-4934-818b-38d90ced39db} |
| */ |
| #define HV_SHUTDOWN_GUID \ |
| .guid = { \ |
| 0x31, 0x60, 0x0b, 0x0e, 0x13, 0x52, 0x34, 0x49, \ |
| 0x81, 0x8b, 0x38, 0xd9, 0x0c, 0xed, 0x39, 0xdb \ |
| } |
| |
| /* |
| * Time Synch GUID |
| * {9527E630-D0AE-497b-ADCE-E80AB0175CAF} |
| */ |
| #define HV_TS_GUID \ |
| .guid = { \ |
| 0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49, \ |
| 0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf \ |
| } |
| |
| /* |
| * Heartbeat GUID |
| * {57164f39-9115-4e78-ab55-382f3bd5422d} |
| */ |
| #define HV_HEART_BEAT_GUID \ |
| .guid = { \ |
| 0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e, \ |
| 0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d \ |
| } |
| |
| /* |
| * KVP GUID |
| * {a9a0f4e7-5a45-4d96-b827-8a841e8c03e6} |
| */ |
| #define HV_KVP_GUID \ |
| .guid = { \ |
| 0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d, \ |
| 0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6 \ |
| } |
| |
| /* |
| * Dynamic memory GUID |
| * {525074dc-8985-46e2-8057-a307dc18a502} |
| */ |
| #define HV_DM_GUID \ |
| .guid = { \ |
| 0xdc, 0x74, 0x50, 0X52, 0x85, 0x89, 0xe2, 0x46, \ |
| 0x80, 0x57, 0xa3, 0x07, 0xdc, 0x18, 0xa5, 0x02 \ |
| } |
| |
| /* |
| * Mouse GUID |
| * {cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a} |
| */ |
| #define HV_MOUSE_GUID \ |
| .guid = { \ |
| 0x9e, 0xb6, 0xa8, 0xcf, 0x4a, 0x5b, 0xc0, 0x4c, \ |
| 0xb9, 0x8b, 0x8b, 0xa1, 0xa1, 0xf3, 0xf9, 0x5a \ |
| } |
| |
| /* |
| * VSS (Backup/Restore) GUID |
| */ |
| #define HV_VSS_GUID \ |
| .guid = { \ |
| 0x29, 0x2e, 0xfa, 0x35, 0x23, 0xea, 0x36, 0x42, \ |
| 0x96, 0xae, 0x3a, 0x6e, 0xba, 0xcb, 0xa4, 0x40 \ |
| } |
| /* |
| * Synthetic Video GUID |
| * {DA0A7802-E377-4aac-8E77-0558EB1073F8} |
| */ |
| #define HV_SYNTHVID_GUID \ |
| .guid = { \ |
| 0x02, 0x78, 0x0a, 0xda, 0x77, 0xe3, 0xac, 0x4a, \ |
| 0x8e, 0x77, 0x05, 0x58, 0xeb, 0x10, 0x73, 0xf8 \ |
| } |
| |
| /* |
| * Synthetic FC GUID |
| * {2f9bcc4a-0069-4af3-b76b-6fd0be528cda} |
| */ |
| #define HV_SYNTHFC_GUID \ |
| .guid = { \ |
| 0x4A, 0xCC, 0x9B, 0x2F, 0x69, 0x00, 0xF3, 0x4A, \ |
| 0xB7, 0x6B, 0x6F, 0xD0, 0xBE, 0x52, 0x8C, 0xDA \ |
| } |
| |
| /* |
| * Common header for Hyper-V ICs |
| */ |
| |
| #define ICMSGTYPE_NEGOTIATE 0 |
| #define ICMSGTYPE_HEARTBEAT 1 |
| #define ICMSGTYPE_KVPEXCHANGE 2 |
| #define ICMSGTYPE_SHUTDOWN 3 |
| #define ICMSGTYPE_TIMESYNC 4 |
| #define ICMSGTYPE_VSS 5 |
| |
| #define ICMSGHDRFLAG_TRANSACTION 1 |
| #define ICMSGHDRFLAG_REQUEST 2 |
| #define ICMSGHDRFLAG_RESPONSE 4 |
| |
| |
| /* |
| * While we want to handle util services as regular devices, |
| * there is only one instance of each of these services; so |
| * we statically allocate the service specific state. |
| */ |
| |
| struct hv_util_service { |
| u8 *recv_buffer; |
| void (*util_cb)(void *); |
| int (*util_init)(struct hv_util_service *); |
| void (*util_deinit)(void); |
| }; |
| |
| struct vmbuspipe_hdr { |
| u32 flags; |
| u32 msgsize; |
| } __packed; |
| |
| struct ic_version { |
| u16 major; |
| u16 minor; |
| } __packed; |
| |
| struct icmsg_hdr { |
| struct ic_version icverframe; |
| u16 icmsgtype; |
| struct ic_version icvermsg; |
| u16 icmsgsize; |
| u32 status; |
| u8 ictransaction_id; |
| u8 icflags; |
| u8 reserved[2]; |
| } __packed; |
| |
| struct icmsg_negotiate { |
| u16 icframe_vercnt; |
| u16 icmsg_vercnt; |
| u32 reserved; |
| struct ic_version icversion_data[1]; /* any size array */ |
| } __packed; |
| |
| struct shutdown_msg_data { |
| u32 reason_code; |
| u32 timeout_seconds; |
| u32 flags; |
| u8 display_message[2048]; |
| } __packed; |
| |
| struct heartbeat_msg_data { |
| u64 seq_num; |
| u32 reserved[8]; |
| } __packed; |
| |
| /* Time Sync IC defs */ |
| #define ICTIMESYNCFLAG_PROBE 0 |
| #define ICTIMESYNCFLAG_SYNC 1 |
| #define ICTIMESYNCFLAG_SAMPLE 2 |
| |
| #ifdef __x86_64__ |
| #define WLTIMEDELTA 116444736000000000L /* in 100ns unit */ |
| #else |
| #define WLTIMEDELTA 116444736000000000LL |
| #endif |
| |
| struct ictimesync_data { |
| u64 parenttime; |
| u64 childtime; |
| u64 roundtriptime; |
| u8 flags; |
| } __packed; |
| |
| struct hyperv_service_callback { |
| u8 msg_type; |
| char *log_msg; |
| uuid_le data; |
| struct vmbus_channel *channel; |
| void (*callback) (void *context); |
| }; |
| |
| #define MAX_SRV_VER 0x7ffffff |
| extern bool vmbus_prep_negotiate_resp(struct icmsg_hdr *, |
| struct icmsg_negotiate *, u8 *, int, |
| int); |
| |
| int hv_kvp_init(struct hv_util_service *); |
| void hv_kvp_deinit(void); |
| void hv_kvp_onchannelcallback(void *); |
| |
| int hv_vss_init(struct hv_util_service *); |
| void hv_vss_deinit(void); |
| void hv_vss_onchannelcallback(void *); |
| |
| /* |
| * Negotiated version with the Host. |
| */ |
| |
| extern __u32 vmbus_proto_version; |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _HYPERV_H */ |