3 * Copyright (c) 2011, Microsoft Corporation.
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.
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
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.
19 * Haiyang Zhang <haiyangz@microsoft.com>
20 * Hank Janssen <hjanssen@microsoft.com>
21 * K. Y. Srinivasan <kys@microsoft.com>
28 #include <uapi/linux/hyperv.h>
30 #include <linux/types.h>
31 #include <linux/scatterlist.h>
32 #include <linux/list.h>
33 #include <linux/uuid.h>
34 #include <linux/timer.h>
35 #include <linux/workqueue.h>
36 #include <linux/completion.h>
37 #include <linux/device.h>
38 #include <linux/mod_devicetable.h>
41 #define MAX_PAGE_BUFFER_COUNT 19
42 #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
46 /* Single-page buffer */
47 struct hv_page_buffer {
53 /* Multiple-page buffer */
54 struct hv_multipage_buffer {
55 /* Length and Offset determines the # of pfns in the array */
58 u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT];
61 /* 0x18 includes the proprietary packet header */
62 #define MAX_PAGE_BUFFER_PACKET (0x18 + \
63 (sizeof(struct hv_page_buffer) * \
64 MAX_PAGE_BUFFER_COUNT))
65 #define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \
66 sizeof(struct hv_multipage_buffer))
71 struct hv_ring_buffer {
72 /* Offset in bytes from the start of ring data below */
75 /* Offset in bytes from the start of ring data below */
81 * Win8 uses some of the reserved bits to implement
82 * interrupt driven flow management. On the send side
83 * we can request that the receiver interrupt the sender
84 * when the ring transitions from being full to being able
85 * to handle a message of size "pending_send_sz".
87 * Add necessary state for this enhancement.
95 u32 feat_pending_send_sz:1;
100 /* Pad it to PAGE_SIZE so that data starts on page boundary */
104 * Ring data starts here + RingDataStartOffset
105 * !!! DO NOT place any fields below this !!!
110 struct hv_ring_buffer_info {
111 struct hv_ring_buffer *ring_buffer;
112 u32 ring_size; /* Include the shared header */
113 spinlock_t ring_lock;
115 u32 ring_datasize; /* < ring_size */
116 u32 ring_data_startoffset;
121 * hv_get_ringbuffer_availbytes()
123 * Get number of bytes available to read and to write to
124 * for the specified ring buffer
127 hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi,
128 u32 *read, u32 *write)
130 u32 read_loc, write_loc, dsize;
132 smp_read_barrier_depends();
134 /* Capture the read/write indices before they changed */
135 read_loc = rbi->ring_buffer->read_index;
136 write_loc = rbi->ring_buffer->write_index;
137 dsize = rbi->ring_datasize;
139 *write = write_loc >= read_loc ? dsize - (write_loc - read_loc) :
140 read_loc - write_loc;
141 *read = dsize - *write;
145 * VMBUS version is 32 bit entity broken up into
146 * two 16 bit quantities: major_number. minor_number.
148 * 0 . 13 (Windows Server 2008)
153 #define VERSION_WS2008 ((0 << 16) | (13))
154 #define VERSION_WIN7 ((1 << 16) | (1))
155 #define VERSION_WIN8 ((2 << 16) | (4))
157 #define VERSION_INVAL -1
159 #define VERSION_CURRENT VERSION_WIN8
161 /* Make maximum size of pipe payload of 16K */
162 #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384)
164 /* Define PipeMode values. */
165 #define VMBUS_PIPE_TYPE_BYTE 0x00000000
166 #define VMBUS_PIPE_TYPE_MESSAGE 0x00000004
168 /* The size of the user defined data buffer for non-pipe offers. */
169 #define MAX_USER_DEFINED_BYTES 120
171 /* The size of the user defined data buffer for pipe offers. */
172 #define MAX_PIPE_USER_DEFINED_BYTES 116
175 * At the center of the Channel Management library is the Channel Offer. This
176 * struct contains the fundamental information about an offer.
178 struct vmbus_channel_offer {
183 * These two fields are not currently used.
189 u16 mmio_megabytes; /* in bytes * 1024 * 1024 */
192 /* Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes. */
194 unsigned char user_def[MAX_USER_DEFINED_BYTES];
199 * The following sructure is an integrated pipe protocol, which
200 * is implemented on top of standard user-defined data. Pipe
201 * clients have MAX_PIPE_USER_DEFINED_BYTES left for their own
206 unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES];
210 * The sub_channel_index is defined in win8.
212 u16 sub_channel_index;
217 #define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1
218 #define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2
219 #define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4
220 #define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10
221 #define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100
222 #define VMBUS_CHANNEL_PARENT_OFFER 0x200
223 #define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400
225 struct vmpacket_descriptor {
233 struct vmpacket_header {
234 u32 prev_pkt_start_offset;
235 struct vmpacket_descriptor descriptor;
238 struct vmtransfer_page_range {
243 struct vmtransfer_page_packet_header {
244 struct vmpacket_descriptor d;
249 struct vmtransfer_page_range ranges[1];
252 struct vmgpadl_packet_header {
253 struct vmpacket_descriptor d;
258 struct vmadd_remove_transfer_page_set {
259 struct vmpacket_descriptor d;
266 * This structure defines a range in guest physical space that can be made to
267 * look virtually contiguous.
276 * This is the format for an Establish Gpadl packet, which contains a handle by
277 * which this GPADL will be known and a set of GPA ranges associated with it.
278 * This can be converted to a MDL by the guest OS. If there are multiple GPA
279 * ranges, then the resulting MDL will be "chained," representing multiple VA
282 struct vmestablish_gpadl {
283 struct vmpacket_descriptor d;
286 struct gpa_range range[1];
290 * This is the format for a Teardown Gpadl packet, which indicates that the
291 * GPADL handle in the Establish Gpadl packet will never be referenced again.
293 struct vmteardown_gpadl {
294 struct vmpacket_descriptor d;
296 u32 reserved; /* for alignment to a 8-byte boundary */
300 * This is the format for a GPA-Direct packet, which contains a set of GPA
301 * ranges, in addition to commands and/or data.
303 struct vmdata_gpa_direct {
304 struct vmpacket_descriptor d;
307 struct gpa_range range[1];
310 /* This is the format for a Additional Data Packet. */
311 struct vmadditional_data {
312 struct vmpacket_descriptor d;
316 unsigned char data[1];
319 union vmpacket_largest_possible_header {
320 struct vmpacket_descriptor simple_hdr;
321 struct vmtransfer_page_packet_header xfer_page_hdr;
322 struct vmgpadl_packet_header gpadl_hdr;
323 struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr;
324 struct vmestablish_gpadl establish_gpadl_hdr;
325 struct vmteardown_gpadl teardown_gpadl_hdr;
326 struct vmdata_gpa_direct data_gpa_direct_hdr;
329 #define VMPACKET_DATA_START_ADDRESS(__packet) \
330 (void *)(((unsigned char *)__packet) + \
331 ((struct vmpacket_descriptor)__packet)->offset8 * 8)
333 #define VMPACKET_DATA_LENGTH(__packet) \
334 ((((struct vmpacket_descriptor)__packet)->len8 - \
335 ((struct vmpacket_descriptor)__packet)->offset8) * 8)
337 #define VMPACKET_TRANSFER_MODE(__packet) \
338 (((struct IMPACT)__packet)->type)
340 enum vmbus_packet_type {
341 VM_PKT_INVALID = 0x0,
343 VM_PKT_ADD_XFER_PAGESET = 0x2,
344 VM_PKT_RM_XFER_PAGESET = 0x3,
345 VM_PKT_ESTABLISH_GPADL = 0x4,
346 VM_PKT_TEARDOWN_GPADL = 0x5,
347 VM_PKT_DATA_INBAND = 0x6,
348 VM_PKT_DATA_USING_XFER_PAGES = 0x7,
349 VM_PKT_DATA_USING_GPADL = 0x8,
350 VM_PKT_DATA_USING_GPA_DIRECT = 0x9,
351 VM_PKT_CANCEL_REQUEST = 0xa,
353 VM_PKT_DATA_USING_ADDITIONAL_PKT = 0xc,
354 VM_PKT_ADDITIONAL_DATA = 0xd
357 #define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1
360 /* Version 1 messages */
361 enum vmbus_channel_message_type {
362 CHANNELMSG_INVALID = 0,
363 CHANNELMSG_OFFERCHANNEL = 1,
364 CHANNELMSG_RESCIND_CHANNELOFFER = 2,
365 CHANNELMSG_REQUESTOFFERS = 3,
366 CHANNELMSG_ALLOFFERS_DELIVERED = 4,
367 CHANNELMSG_OPENCHANNEL = 5,
368 CHANNELMSG_OPENCHANNEL_RESULT = 6,
369 CHANNELMSG_CLOSECHANNEL = 7,
370 CHANNELMSG_GPADL_HEADER = 8,
371 CHANNELMSG_GPADL_BODY = 9,
372 CHANNELMSG_GPADL_CREATED = 10,
373 CHANNELMSG_GPADL_TEARDOWN = 11,
374 CHANNELMSG_GPADL_TORNDOWN = 12,
375 CHANNELMSG_RELID_RELEASED = 13,
376 CHANNELMSG_INITIATE_CONTACT = 14,
377 CHANNELMSG_VERSION_RESPONSE = 15,
378 CHANNELMSG_UNLOAD = 16,
379 #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
380 CHANNELMSG_VIEWRANGE_ADD = 17,
381 CHANNELMSG_VIEWRANGE_REMOVE = 18,
386 struct vmbus_channel_message_header {
387 enum vmbus_channel_message_type msgtype;
391 /* Query VMBus Version parameters */
392 struct vmbus_channel_query_vmbus_version {
393 struct vmbus_channel_message_header header;
397 /* VMBus Version Supported parameters */
398 struct vmbus_channel_version_supported {
399 struct vmbus_channel_message_header header;
400 u8 version_supported;
403 /* Offer Channel parameters */
404 struct vmbus_channel_offer_channel {
405 struct vmbus_channel_message_header header;
406 struct vmbus_channel_offer offer;
410 * win7 and beyond splits this field into a bit field.
412 u8 monitor_allocated:1;
415 * These are new fields added in win7 and later.
416 * Do not access these fields without checking the
417 * negotiated protocol.
419 * If "is_dedicated_interrupt" is set, we must not set the
420 * associated bit in the channel bitmap while sending the
421 * interrupt to the host.
423 * connection_id is to be used in signaling the host.
425 u16 is_dedicated_interrupt:1;
430 /* Rescind Offer parameters */
431 struct vmbus_channel_rescind_offer {
432 struct vmbus_channel_message_header header;
437 * Request Offer -- no parameters, SynIC message contains the partition ID
438 * Set Snoop -- no parameters, SynIC message contains the partition ID
439 * Clear Snoop -- no parameters, SynIC message contains the partition ID
440 * All Offers Delivered -- no parameters, SynIC message contains the partition
442 * Flush Client -- no parameters, SynIC message contains the partition ID
445 /* Open Channel parameters */
446 struct vmbus_channel_open_channel {
447 struct vmbus_channel_message_header header;
449 /* Identifies the specific VMBus channel that is being opened. */
452 /* ID making a particular open request at a channel offer unique. */
455 /* GPADL for the channel's ring buffer. */
456 u32 ringbuffer_gpadlhandle;
459 * Starting with win8, this field will be used to specify
460 * the target virtual processor on which to deliver the interrupt for
461 * the host to guest communication.
462 * Prior to win8, incoming channel interrupts would only
463 * be delivered on cpu 0. Setting this value to 0 would
464 * preserve the earlier behavior.
469 * The upstream ring buffer begins at offset zero in the memory
470 * described by RingBufferGpadlHandle. The downstream ring buffer
471 * follows it at this offset (in pages).
473 u32 downstream_ringbuffer_pageoffset;
475 /* User-specific data to be passed along to the server endpoint. */
476 unsigned char userdata[MAX_USER_DEFINED_BYTES];
479 /* Open Channel Result parameters */
480 struct vmbus_channel_open_result {
481 struct vmbus_channel_message_header header;
487 /* Close channel parameters; */
488 struct vmbus_channel_close_channel {
489 struct vmbus_channel_message_header header;
493 /* Channel Message GPADL */
494 #define GPADL_TYPE_RING_BUFFER 1
495 #define GPADL_TYPE_SERVER_SAVE_AREA 2
496 #define GPADL_TYPE_TRANSACTION 8
499 * The number of PFNs in a GPADL message is defined by the number of
500 * pages that would be spanned by ByteCount and ByteOffset. If the
501 * implied number of PFNs won't fit in this packet, there will be a
502 * follow-up packet that contains more.
504 struct vmbus_channel_gpadl_header {
505 struct vmbus_channel_message_header header;
510 struct gpa_range range[0];
513 /* This is the followup packet that contains more PFNs. */
514 struct vmbus_channel_gpadl_body {
515 struct vmbus_channel_message_header header;
521 struct vmbus_channel_gpadl_created {
522 struct vmbus_channel_message_header header;
528 struct vmbus_channel_gpadl_teardown {
529 struct vmbus_channel_message_header header;
534 struct vmbus_channel_gpadl_torndown {
535 struct vmbus_channel_message_header header;
539 #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
540 struct vmbus_channel_view_range_add {
541 struct vmbus_channel_message_header header;
542 PHYSICAL_ADDRESS viewrange_base;
543 u64 viewrange_length;
547 struct vmbus_channel_view_range_remove {
548 struct vmbus_channel_message_header header;
549 PHYSICAL_ADDRESS viewrange_base;
554 struct vmbus_channel_relid_released {
555 struct vmbus_channel_message_header header;
559 struct vmbus_channel_initiate_contact {
560 struct vmbus_channel_message_header header;
561 u32 vmbus_version_requested;
568 struct vmbus_channel_version_response {
569 struct vmbus_channel_message_header header;
570 u8 version_supported;
573 enum vmbus_channel_state {
575 CHANNEL_OPENING_STATE,
577 CHANNEL_OPENED_STATE,
581 * Represents each channel msg on the vmbus connection This is a
582 * variable-size data structure depending on the msg type itself
584 struct vmbus_channel_msginfo {
585 /* Bookkeeping stuff */
586 struct list_head msglistentry;
588 /* So far, this is only used to handle gpadl body message */
589 struct list_head submsglist;
591 /* Synchronize the request/response if needed */
592 struct completion waitevent;
594 struct vmbus_channel_version_supported version_supported;
595 struct vmbus_channel_open_result open_result;
596 struct vmbus_channel_gpadl_torndown gpadl_torndown;
597 struct vmbus_channel_gpadl_created gpadl_created;
598 struct vmbus_channel_version_response version_response;
603 * The channel message that goes out on the "wire".
604 * It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header
606 unsigned char msg[0];
609 struct vmbus_close_msg {
610 struct vmbus_channel_msginfo info;
611 struct vmbus_channel_close_channel msg;
614 /* Define connection identifier type. */
615 union hv_connection_id {
623 /* Definition of the hv_signal_event hypercall input structure. */
624 struct hv_input_signal_event {
625 union hv_connection_id connectionid;
630 struct hv_input_signal_event_buffer {
632 struct hv_input_signal_event event;
635 struct vmbus_channel {
636 struct list_head listentry;
638 struct hv_device *device_obj;
640 struct work_struct work;
642 enum vmbus_channel_state state;
644 struct vmbus_channel_offer_channel offermsg;
646 * These are based on the OfferMsg.MonitorId.
647 * Save it here for easy access.
652 u32 ringbuffer_gpadlhandle;
654 /* Allocated memory for ring buffer */
655 void *ringbuffer_pages;
656 u32 ringbuffer_pagecount;
657 struct hv_ring_buffer_info outbound; /* send to parent */
658 struct hv_ring_buffer_info inbound; /* receive from parent */
659 spinlock_t inbound_lock;
660 struct workqueue_struct *controlwq;
662 struct vmbus_close_msg close_msg;
664 /* Channel callback are invoked in this workqueue context */
665 /* HANDLE dataWorkQueue; */
667 void (*onchannel_callback)(void *context);
668 void *channel_callback_context;
671 * A channel can be marked for efficient (batched)
673 * If batched_reading is set to "true", we read until the
674 * channel is empty and hold off interrupts from the host
675 * during the entire read process.
676 * If batched_reading is set to "false", the client is not
677 * going to perform batched reading.
679 * By default we will enable batched reading; specific
680 * drivers that don't want this behavior can turn it off.
683 bool batched_reading;
685 bool is_dedicated_interrupt;
686 struct hv_input_signal_event_buffer sig_buf;
687 struct hv_input_signal_event *sig_event;
690 * Starting with win8, this field will be used to specify
691 * the target virtual processor on which to deliver the interrupt for
692 * the host to guest communication.
693 * Prior to win8, incoming channel interrupts would only
694 * be delivered on cpu 0. Setting this value to 0 would
695 * preserve the earlier behavior.
699 * Support for sub-channels. For high performance devices,
700 * it will be useful to have multiple sub-channels to support
701 * a scalable communication infrastructure with the host.
702 * The support for sub-channels is implemented as an extention
703 * to the current infrastructure.
704 * The initial offer is considered the primary channel and this
705 * offer message will indicate if the host supports sub-channels.
706 * The guest is free to ask for sub-channels to be offerred and can
707 * open these sub-channels as a normal "primary" channel. However,
708 * all sub-channels will have the same type and instance guids as the
709 * primary channel. Requests sent on a given channel will result in a
710 * response on the same channel.
714 * Sub-channel creation callback. This callback will be called in
715 * process context when a sub-channel offer is received from the host.
716 * The guest can open the sub-channel in the context of this callback.
718 void (*sc_creation_callback)(struct vmbus_channel *new_sc);
722 * All Sub-channels of a primary channel are linked here.
724 struct list_head sc_list;
726 * The primary channel this sub-channel belongs to.
727 * This will be NULL for the primary channel.
729 struct vmbus_channel *primary_channel;
732 static inline void set_channel_read_state(struct vmbus_channel *c, bool state)
734 c->batched_reading = state;
737 void vmbus_onmessage(void *context);
739 int vmbus_request_offers(void);
742 * APIs for managing sub-channels.
745 void vmbus_set_sc_create_callback(struct vmbus_channel *primary_channel,
746 void (*sc_cr_cb)(struct vmbus_channel *new_sc));
749 * Retrieve the (sub) channel on which to send an outgoing request.
750 * When a primary channel has multiple sub-channels, we choose a
751 * channel whose VCPU binding is closest to the VCPU on which
752 * this call is being made.
754 struct vmbus_channel *vmbus_get_outgoing_channel(struct vmbus_channel *primary);
757 * Check if sub-channels have already been offerred. This API will be useful
758 * when the driver is unloaded after establishing sub-channels. In this case,
759 * when the driver is re-loaded, the driver would have to check if the
760 * subchannels have already been established before attempting to request
761 * the creation of sub-channels.
762 * This function returns TRUE to indicate that subchannels have already been
764 * This function should be invoked after setting the callback function for
765 * sub-channel creation.
767 bool vmbus_are_subchannels_present(struct vmbus_channel *primary);
769 /* The format must be the same as struct vmdata_gpa_direct */
770 struct vmbus_channel_packet_page_buffer {
778 struct hv_page_buffer range[MAX_PAGE_BUFFER_COUNT];
781 /* The format must be the same as struct vmdata_gpa_direct */
782 struct vmbus_channel_packet_multipage_buffer {
789 u32 rangecount; /* Always 1 in this case */
790 struct hv_multipage_buffer range;
794 extern int vmbus_open(struct vmbus_channel *channel,
795 u32 send_ringbuffersize,
796 u32 recv_ringbuffersize,
799 void(*onchannel_callback)(void *context),
802 extern void vmbus_close(struct vmbus_channel *channel);
804 extern int vmbus_sendpacket(struct vmbus_channel *channel,
808 enum vmbus_packet_type type,
811 extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
812 struct hv_page_buffer pagebuffers[],
818 extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,
819 struct hv_multipage_buffer *mpb,
824 extern int vmbus_establish_gpadl(struct vmbus_channel *channel,
829 extern int vmbus_teardown_gpadl(struct vmbus_channel *channel,
832 extern int vmbus_recvpacket(struct vmbus_channel *channel,
835 u32 *buffer_actual_len,
838 extern int vmbus_recvpacket_raw(struct vmbus_channel *channel,
841 u32 *buffer_actual_len,
845 extern void vmbus_ontimer(unsigned long data);
847 /* Base driver object */
851 /* the device type supported by this driver */
853 const struct hv_vmbus_device_id *id_table;
855 struct device_driver driver;
857 int (*probe)(struct hv_device *, const struct hv_vmbus_device_id *);
858 int (*remove)(struct hv_device *);
859 void (*shutdown)(struct hv_device *);
863 /* Base device object */
865 /* the device type id of this device */
868 /* the device instance id of this device */
869 uuid_le dev_instance;
871 struct device device;
873 struct vmbus_channel *channel;
877 static inline struct hv_device *device_to_hv_device(struct device *d)
879 return container_of(d, struct hv_device, device);
882 static inline struct hv_driver *drv_to_hv_drv(struct device_driver *d)
884 return container_of(d, struct hv_driver, driver);
887 static inline void hv_set_drvdata(struct hv_device *dev, void *data)
889 dev_set_drvdata(&dev->device, data);
892 static inline void *hv_get_drvdata(struct hv_device *dev)
894 return dev_get_drvdata(&dev->device);
897 /* Vmbus interface */
898 #define vmbus_driver_register(driver) \
899 __vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
900 int __must_check __vmbus_driver_register(struct hv_driver *hv_driver,
901 struct module *owner,
902 const char *mod_name);
903 void vmbus_driver_unregister(struct hv_driver *hv_driver);
906 * VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device
908 * This macro is used to create a struct hv_vmbus_device_id that matches a
911 #define VMBUS_DEVICE(g0, g1, g2, g3, g4, g5, g6, g7, \
912 g8, g9, ga, gb, gc, gd, ge, gf) \
913 .guid = { g0, g1, g2, g3, g4, g5, g6, g7, \
914 g8, g9, ga, gb, gc, gd, ge, gf },
917 * GUID definitions of various offer types - services offered to the guest.
922 * {f8615163-df3e-46c5-913f-f2d2f965ed0e}
924 #define HV_NIC_GUID \
926 0x63, 0x51, 0x61, 0xf8, 0x3e, 0xdf, 0xc5, 0x46, \
927 0x91, 0x3f, 0xf2, 0xd2, 0xf9, 0x65, 0xed, 0x0e \
932 * {32412632-86cb-44a2-9b5c-50d1417354f5}
934 #define HV_IDE_GUID \
936 0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, \
937 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5 \
942 * {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f}
944 #define HV_SCSI_GUID \
946 0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, \
947 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f \
952 * {0e0b6031-5213-4934-818b-38d90ced39db}
954 #define HV_SHUTDOWN_GUID \
956 0x31, 0x60, 0x0b, 0x0e, 0x13, 0x52, 0x34, 0x49, \
957 0x81, 0x8b, 0x38, 0xd9, 0x0c, 0xed, 0x39, 0xdb \
962 * {9527E630-D0AE-497b-ADCE-E80AB0175CAF}
966 0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49, \
967 0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf \
972 * {57164f39-9115-4e78-ab55-382f3bd5422d}
974 #define HV_HEART_BEAT_GUID \
976 0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e, \
977 0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d \
982 * {a9a0f4e7-5a45-4d96-b827-8a841e8c03e6}
984 #define HV_KVP_GUID \
986 0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d, \
987 0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6 \
991 * Dynamic memory GUID
992 * {525074dc-8985-46e2-8057-a307dc18a502}
996 0xdc, 0x74, 0x50, 0X52, 0x85, 0x89, 0xe2, 0x46, \
997 0x80, 0x57, 0xa3, 0x07, 0xdc, 0x18, 0xa5, 0x02 \
1002 * {cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a}
1004 #define HV_MOUSE_GUID \
1006 0x9e, 0xb6, 0xa8, 0xcf, 0x4a, 0x5b, 0xc0, 0x4c, \
1007 0xb9, 0x8b, 0x8b, 0xa1, 0xa1, 0xf3, 0xf9, 0x5a \
1011 * VSS (Backup/Restore) GUID
1013 #define HV_VSS_GUID \
1015 0x29, 0x2e, 0xfa, 0x35, 0x23, 0xea, 0x36, 0x42, \
1016 0x96, 0xae, 0x3a, 0x6e, 0xba, 0xcb, 0xa4, 0x40 \
1019 * Synthetic Video GUID
1020 * {DA0A7802-E377-4aac-8E77-0558EB1073F8}
1022 #define HV_SYNTHVID_GUID \
1024 0x02, 0x78, 0x0a, 0xda, 0x77, 0xe3, 0xac, 0x4a, \
1025 0x8e, 0x77, 0x05, 0x58, 0xeb, 0x10, 0x73, 0xf8 \
1030 * {2f9bcc4a-0069-4af3-b76b-6fd0be528cda}
1032 #define HV_SYNTHFC_GUID \
1034 0x4A, 0xCC, 0x9B, 0x2F, 0x69, 0x00, 0xF3, 0x4A, \
1035 0xB7, 0x6B, 0x6F, 0xD0, 0xBE, 0x52, 0x8C, 0xDA \
1039 * Common header for Hyper-V ICs
1042 #define ICMSGTYPE_NEGOTIATE 0
1043 #define ICMSGTYPE_HEARTBEAT 1
1044 #define ICMSGTYPE_KVPEXCHANGE 2
1045 #define ICMSGTYPE_SHUTDOWN 3
1046 #define ICMSGTYPE_TIMESYNC 4
1047 #define ICMSGTYPE_VSS 5
1049 #define ICMSGHDRFLAG_TRANSACTION 1
1050 #define ICMSGHDRFLAG_REQUEST 2
1051 #define ICMSGHDRFLAG_RESPONSE 4
1055 * While we want to handle util services as regular devices,
1056 * there is only one instance of each of these services; so
1057 * we statically allocate the service specific state.
1060 struct hv_util_service {
1062 void (*util_cb)(void *);
1063 int (*util_init)(struct hv_util_service *);
1064 void (*util_deinit)(void);
1067 struct vmbuspipe_hdr {
1078 struct ic_version icverframe;
1080 struct ic_version icvermsg;
1083 u8 ictransaction_id;
1088 struct icmsg_negotiate {
1092 struct ic_version icversion_data[1]; /* any size array */
1095 struct shutdown_msg_data {
1097 u32 timeout_seconds;
1099 u8 display_message[2048];
1102 struct heartbeat_msg_data {
1107 /* Time Sync IC defs */
1108 #define ICTIMESYNCFLAG_PROBE 0
1109 #define ICTIMESYNCFLAG_SYNC 1
1110 #define ICTIMESYNCFLAG_SAMPLE 2
1113 #define WLTIMEDELTA 116444736000000000L /* in 100ns unit */
1115 #define WLTIMEDELTA 116444736000000000LL
1118 struct ictimesync_data {
1125 struct hyperv_service_callback {
1129 struct vmbus_channel *channel;
1130 void (*callback) (void *context);
1133 #define MAX_SRV_VER 0x7ffffff
1134 extern bool vmbus_prep_negotiate_resp(struct icmsg_hdr *,
1135 struct icmsg_negotiate *, u8 *, int,
1138 int hv_kvp_init(struct hv_util_service *);
1139 void hv_kvp_deinit(void);
1140 void hv_kvp_onchannelcallback(void *);
1142 int hv_vss_init(struct hv_util_service *);
1143 void hv_vss_deinit(void);
1144 void hv_vss_onchannelcallback(void *);
1146 extern u64 hyperv_mmio_start;
1147 extern u64 hyperv_mmio_size;
1150 * Negotiated version with the Host.
1153 extern __u32 vmbus_proto_version;
1155 #endif /* _HYPERV_H */