| /* |
| * |
| * 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/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> |
| |
| |
| #include <asm/hyperv.h> |
| |
| |
| #define MAX_PAGE_BUFFER_COUNT 16 |
| #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; |
| |
| /* Pad it to PAGE_SIZE so that data starts on page boundary */ |
| u8 reserved[4084]; |
| |
| /* NOTE: |
| * The interrupt_mask field is used only for channels but since our |
| * vmbus connection also uses this data structure and its data starts |
| * here, we commented out this field. |
| */ |
| |
| /* |
| * 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; |
| }; |
| |
| struct hv_ring_buffer_debug_info { |
| u32 current_interrupt_mask; |
| u32 current_read_index; |
| u32 current_write_index; |
| u32 bytes_avail_toread; |
| u32 bytes_avail_towrite; |
| }; |
| |
| /* |
| * We use the same version numbering for all Hyper-V modules. |
| * |
| * Definition of versioning is as follows; |
| * |
| * Major Number Changes for these scenarios; |
| * 1. When a new version of Windows Hyper-V |
| * is released. |
| * 2. A Major change has occurred in the |
| * Linux IC's. |
| * (For example the merge for the first time |
| * into the kernel) Every time the Major Number |
| * changes, the Revision number is reset to 0. |
| * Minor Number Changes when new functionality is added |
| * to the Linux IC's that is not a bug fix. |
| * |
| * 3.1 - Added completed hv_utils driver. Shutdown/Heartbeat/Timesync |
| */ |
| #define HV_DRV_VERSION "3.1" |
| |
| |
| /* |
| * A revision number of vmbus that is used for ensuring both ends on a |
| * partition are using compatible versions. |
| */ |
| #define VMBUS_REVISION_NUMBER 13 |
| |
| /* 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; |
| u64 int_latency; /* in 100ns units */ |
| u32 if_revision; |
| u32 server_ctx_size; /* in bytes */ |
| 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; |
| u32 padding; |
| } __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; |
| bool 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; |
| bool 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; |
| bool monitor_allocated; |
| } __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; |
| |
| /* GPADL for the channel's server context save area. */ |
| u32 server_contextarea_gpadlhandle; |
| |
| /* |
| * 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; |
| bool version_supported; |
| } __packed; |
| |
| enum vmbus_channel_state { |
| CHANNEL_OFFER_STATE, |
| CHANNEL_OPENING_STATE, |
| CHANNEL_OPEN_STATE, |
| }; |
| |
| struct vmbus_channel_debug_info { |
| u32 relid; |
| enum vmbus_channel_state state; |
| uuid_le interfacetype; |
| uuid_le interface_instance; |
| u32 monitorid; |
| u32 servermonitor_pending; |
| u32 servermonitor_latency; |
| u32 servermonitor_connectionid; |
| u32 clientmonitor_pending; |
| u32 clientmonitor_latency; |
| u32 clientmonitor_connectionid; |
| |
| struct hv_ring_buffer_debug_info inbound; |
| struct hv_ring_buffer_debug_info outbound; |
| }; |
| |
| /* |
| * 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; |
| }; |
| |
| struct vmbus_channel { |
| struct list_head listentry; |
| |
| struct hv_device *device_obj; |
| |
| struct work_struct work; |
| |
| enum vmbus_channel_state state; |
| /* |
| * For util channels, stash the |
| * the service index for easy access. |
| */ |
| s8 util_index; |
| |
| 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; |
| }; |
| |
| void free_channel(struct vmbus_channel *channel); |
| |
| void vmbus_onmessage(void *context); |
| |
| int vmbus_request_offers(void); |
| |
| /* 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_get_debug_info(struct vmbus_channel *channel, |
| struct vmbus_channel_debug_info *debug); |
| |
| extern void vmbus_ontimer(unsigned long data); |
| |
| |
| #define LOWORD(dw) ((unsigned short)(dw)) |
| #define HIWORD(dw) ((unsigned short)(((unsigned int) (dw) >> 16) & 0xFFFF)) |
| |
| |
| #define VMBUS 0x0001 |
| #define STORVSC 0x0002 |
| #define NETVSC 0x0004 |
| #define INPUTVSC 0x0008 |
| #define BLKVSC 0x0010 |
| #define VMBUS_DRV 0x0100 |
| #define STORVSC_DRV 0x0200 |
| #define NETVSC_DRV 0x0400 |
| #define INPUTVSC_DRV 0x0800 |
| #define BLKVSC_DRV 0x1000 |
| |
| #define ALL_MODULES (VMBUS |\ |
| STORVSC |\ |
| NETVSC |\ |
| INPUTVSC |\ |
| BLKVSC |\ |
| VMBUS_DRV |\ |
| STORVSC_DRV |\ |
| NETVSC_DRV |\ |
| INPUTVSC_DRV|\ |
| BLKVSC_DRV) |
| |
| /* Logging Level */ |
| #define ERROR_LVL 3 |
| #define WARNING_LVL 4 |
| #define INFO_LVL 6 |
| #define DEBUG_LVL 7 |
| #define DEBUG_LVL_ENTEREXIT 8 |
| #define DEBUG_RING_LVL 9 |
| |
| extern unsigned int vmbus_loglevel; |
| |
| #define DPRINT(mod, lvl, fmt, args...) do {\ |
| if ((mod & (HIWORD(vmbus_loglevel))) && \ |
| (lvl <= LOWORD(vmbus_loglevel))) \ |
| printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ |
| } while (0) |
| |
| #define DPRINT_DBG(mod, fmt, args...) do {\ |
| if ((mod & (HIWORD(vmbus_loglevel))) && \ |
| (DEBUG_LVL <= LOWORD(vmbus_loglevel))) \ |
| printk(KERN_DEBUG #mod": %s() " fmt "\n", __func__, ## args);\ |
| } while (0) |
| |
| #define DPRINT_INFO(mod, fmt, args...) do {\ |
| if ((mod & (HIWORD(vmbus_loglevel))) && \ |
| (INFO_LVL <= LOWORD(vmbus_loglevel))) \ |
| printk(KERN_INFO #mod": " fmt "\n", ## args);\ |
| } while (0) |
| |
| #define DPRINT_WARN(mod, fmt, args...) do {\ |
| if ((mod & (HIWORD(vmbus_loglevel))) && \ |
| (WARNING_LVL <= LOWORD(vmbus_loglevel))) \ |
| printk(KERN_WARNING #mod": WARNING! " fmt "\n", ## args);\ |
| } while (0) |
| |
| #define DPRINT_ERR(mod, fmt, args...) do {\ |
| if ((mod & (HIWORD(vmbus_loglevel))) && \ |
| (ERROR_LVL <= LOWORD(vmbus_loglevel))) \ |
| printk(KERN_ERR #mod": %s() ERROR!! " fmt "\n", \ |
| __func__, ## args);\ |
| } while (0) |
| |
| |
| |
| struct hv_driver; |
| struct hv_device; |
| |
| struct hv_dev_port_info { |
| u32 int_mask; |
| u32 read_idx; |
| u32 write_idx; |
| u32 bytes_avail_toread; |
| u32 bytes_avail_towrite; |
| }; |
| |
| struct hv_device_info { |
| u32 chn_id; |
| u32 chn_state; |
| uuid_le chn_type; |
| uuid_le chn_instance; |
| |
| u32 monitor_id; |
| u32 server_monitor_pending; |
| u32 server_monitor_latency; |
| u32 server_monitor_conn_id; |
| u32 client_monitor_pending; |
| u32 client_monitor_latency; |
| u32 client_monitor_conn_id; |
| |
| struct hv_dev_port_info inbound; |
| struct hv_dev_port_info outbound; |
| }; |
| |
| /* 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 *); |
| 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; |
| |
| /* Device extension; */ |
| void *ext; |
| }; |
| |
| |
| 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); |
| } |
| |
| |
| /* 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 }, |
| |
| /* |
| * 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 |
| |
| #define HV_S_OK 0x00000000 |
| #define HV_E_FAIL 0x80004005 |
| #define HV_ERROR_NOT_SUPPORTED 0x80070032 |
| #define HV_ERROR_MACHINE_LOCKED 0x800704F7 |
| |
| 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; |
| |
| /* Index for each IC struct in array hv_cb_utils[] */ |
| #define HV_SHUTDOWN_MSG 0 |
| #define HV_TIMESYNC_MSG 1 |
| #define HV_HEARTBEAT_MSG 2 |
| #define HV_KVP_MSG 3 |
| |
| struct hyperv_service_callback { |
| u8 msg_type; |
| char *log_msg; |
| uuid_le data; |
| struct vmbus_channel *channel; |
| void (*callback) (void *context); |
| }; |
| |
| extern void prep_negotiate_resp(struct icmsg_hdr *, |
| struct icmsg_negotiate *, u8 *); |
| extern void chn_cb_negotiate(void *); |
| extern struct hyperv_service_callback hv_cb_utils[]; |
| |
| #endif /* _HYPERV_H */ |