1/*- 2 * Copyright (c) 2009-2012 Microsoft Corp. 3 * Copyright (c) 2012 NetApp Inc. 4 * Copyright (c) 2012 Citrix Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31#ifndef __HYPERV_PRIV_H__ 32#define __HYPERV_PRIV_H__ 33 34#include <sys/param.h> 35#include <sys/lock.h> 36#include <sys/mutex.h> 37#include <sys/sema.h> 38 39#include <dev/hyperv/include/hyperv.h> 40 41 42/* 43 * Status codes for hypervisor operations. 44 */ 45 46typedef uint16_t hv_vmbus_status; 47 48#define HV_MESSAGE_SIZE (256) 49#define HV_MESSAGE_PAYLOAD_BYTE_COUNT (240) 50#define HV_MESSAGE_PAYLOAD_QWORD_COUNT (30) 51#define HV_ANY_VP (0xFFFFFFFF) 52 53/* 54 * Synthetic interrupt controller flag constants. 55 */ 56 57#define HV_EVENT_FLAGS_COUNT (256 * 8) 58#define HV_EVENT_FLAGS_BYTE_COUNT (256) 59#define HV_EVENT_FLAGS_DWORD_COUNT (256 / sizeof(uint32_t)) 60 61/* 62 * MessageId: HV_STATUS_INSUFFICIENT_BUFFERS 63 * MessageText: 64 * You did not supply enough message buffers to send a message. 65 */ 66 67#define HV_STATUS_INSUFFICIENT_BUFFERS ((uint16_t)0x0013) 68 69typedef void (*hv_vmbus_channel_callback)(void *context); 70 71typedef struct { 72 void* data; 73 uint32_t length; 74} hv_vmbus_sg_buffer_list; 75 76typedef struct { 77 uint32_t current_interrupt_mask; 78 uint32_t current_read_index; 79 uint32_t current_write_index; 80 uint32_t bytes_avail_to_read; 81 uint32_t bytes_avail_to_write; 82} hv_vmbus_ring_buffer_debug_info; 83 84typedef struct { 85 uint32_t rel_id; 86 hv_vmbus_channel_state state; 87 hv_guid interface_type; 88 hv_guid interface_instance; 89 uint32_t monitor_id; 90 uint32_t server_monitor_pending; 91 uint32_t server_monitor_latency; 92 uint32_t server_monitor_connection_id; 93 uint32_t client_monitor_pending; 94 uint32_t client_monitor_latency; 95 uint32_t client_monitor_connection_id; 96 hv_vmbus_ring_buffer_debug_info inbound; 97 hv_vmbus_ring_buffer_debug_info outbound; 98} hv_vmbus_channel_debug_info; 99 100typedef union { 101 hv_vmbus_channel_version_supported version_supported; 102 hv_vmbus_channel_open_result open_result; 103 hv_vmbus_channel_gpadl_torndown gpadl_torndown; 104 hv_vmbus_channel_gpadl_created gpadl_created; 105 hv_vmbus_channel_version_response version_response; 106} hv_vmbus_channel_msg_response; 107 108/* 109 * Represents each channel msg on the vmbus connection 110 * This is a variable-size data structure depending on 111 * the msg type itself 112 */ 113typedef struct hv_vmbus_channel_msg_info { 114 /* 115 * Bookkeeping stuff 116 */ 117 TAILQ_ENTRY(hv_vmbus_channel_msg_info) msg_list_entry; 118 /* 119 * So far, this is only used to handle 120 * gpadl body message 121 */ 122 TAILQ_HEAD(, hv_vmbus_channel_msg_info) sub_msg_list_anchor; 123 /* 124 * Synchronize the request/response if 125 * needed. 126 * KYS: Use a semaphore for now. 127 * Not perf critical. 128 */ 129 struct sema wait_sema; 130 hv_vmbus_channel_msg_response response; 131 uint32_t message_size; 132 /** 133 * The channel message that goes out on 134 * the "wire". It will contain at 135 * minimum the 136 * hv_vmbus_channel_msg_header 137 * header. 138 */ 139 unsigned char msg[0]; 140} hv_vmbus_channel_msg_info; 141 142/* 143 * The format must be the same as hv_vm_data_gpa_direct 144 */ 145typedef struct hv_vmbus_channel_packet_page_buffer { 146 uint16_t type; 147 uint16_t data_offset8; 148 uint16_t length8; 149 uint16_t flags; 150 uint64_t transaction_id; 151 uint32_t reserved; 152 uint32_t range_count; 153 hv_vmbus_page_buffer range[HV_MAX_PAGE_BUFFER_COUNT]; 154} __packed hv_vmbus_channel_packet_page_buffer; 155 156/* 157 * The format must be the same as hv_vm_data_gpa_direct 158 */ 159typedef struct hv_vmbus_channel_packet_multipage_buffer { 160 uint16_t type; 161 uint16_t data_offset8; 162 uint16_t length8; 163 uint16_t flags; 164 uint64_t transaction_id; 165 uint32_t reserved; 166 uint32_t range_count; /* Always 1 in this case */ 167 hv_vmbus_multipage_buffer range; 168} __packed hv_vmbus_channel_packet_multipage_buffer; 169 170enum { 171 HV_VMBUS_MESSAGE_CONNECTION_ID = 1, 172 HV_VMBUS_MESSAGE_PORT_ID = 1, 173 HV_VMBUS_EVENT_CONNECTION_ID = 2, 174 HV_VMBUS_EVENT_PORT_ID = 2, 175 HV_VMBUS_MONITOR_CONNECTION_ID = 3, 176 HV_VMBUS_MONITOR_PORT_ID = 3, 177 HV_VMBUS_MESSAGE_SINT = 2 178}; 179 180#define HV_PRESENT_BIT 0x80000000 181 182#define HV_HYPERCALL_PARAM_ALIGN sizeof(uint64_t) 183 184/* 185 * Connection identifier type 186 */ 187typedef union { 188 uint32_t as_uint32_t; 189 struct { 190 uint32_t id:24; 191 uint32_t reserved:8; 192 } u; 193 194} __packed hv_vmbus_connection_id; 195 196/* 197 * Definition of the hv_vmbus_signal_event hypercall input structure 198 */ 199typedef struct { 200 hv_vmbus_connection_id connection_id; 201 uint16_t flag_number; 202 uint16_t rsvd_z; 203} __packed hv_vmbus_input_signal_event; 204 205typedef struct { 206 uint64_t align8; 207 hv_vmbus_input_signal_event event; 208} __packed hv_vmbus_input_signal_event_buffer; 209 210typedef struct { 211 uint64_t guest_id; 212 void* hypercall_page; 213 hv_bool_uint8_t syn_ic_initialized; 214 /* 215 * This is used as an input param to HV_CALL_SIGNAL_EVENT hypercall. 216 * The input param is immutable in our usage and 217 * must be dynamic mem (vs stack or global). 218 */ 219 hv_vmbus_input_signal_event_buffer *signal_event_buffer; 220 /* 221 * 8-bytes aligned of the buffer above 222 */ 223 hv_vmbus_input_signal_event *signal_event_param; 224 225 hv_vmbus_handle syn_ic_msg_page[MAXCPU]; 226 hv_vmbus_handle syn_ic_event_page[MAXCPU]; 227} hv_vmbus_context; 228 229/* 230 * Define hypervisor message types 231 */ 232typedef enum { 233 234 HV_MESSAGE_TYPE_NONE = 0x00000000, 235 236 /* 237 * Memory access messages 238 */ 239 HV_MESSAGE_TYPE_UNMAPPED_GPA = 0x80000000, 240 HV_MESSAGE_TYPE_GPA_INTERCEPT = 0x80000001, 241 242 /* 243 * Timer notification messages 244 */ 245 HV_MESSAGE_TIMER_EXPIRED = 0x80000010, 246 247 /* 248 * Error messages 249 */ 250 HV_MESSAGE_TYPE_INVALID_VP_REGISTER_VALUE = 0x80000020, 251 HV_MESSAGE_TYPE_UNRECOVERABLE_EXCEPTION = 0x80000021, 252 HV_MESSAGE_TYPE_UNSUPPORTED_FEATURE = 0x80000022, 253 254 /* 255 * Trace buffer complete messages 256 */ 257 HV_MESSAGE_TYPE_EVENT_LOG_BUFFER_COMPLETE = 0x80000040, 258 259 /* 260 * Platform-specific processor intercept messages 261 */ 262 HV_MESSAGE_TYPE_X64_IO_PORT_INTERCEPT = 0x80010000, 263 HV_MESSAGE_TYPE_X64_MSR_INTERCEPT = 0x80010001, 264 HV_MESSAGE_TYPE_X64_CPU_INTERCEPT = 0x80010002, 265 HV_MESSAGE_TYPE_X64_EXCEPTION_INTERCEPT = 0x80010003, 266 HV_MESSAGE_TYPE_X64_APIC_EOI = 0x80010004, 267 HV_MESSAGE_TYPE_X64_LEGACY_FP_ERROR = 0x80010005 268 269} hv_vmbus_msg_type; 270 271/* 272 * Define port identifier type 273 */ 274typedef union _hv_vmbus_port_id { 275 uint32_t as_uint32_t; 276 struct { 277 uint32_t id:24; 278 uint32_t reserved:8; 279 } u ; 280} hv_vmbus_port_id; 281 282/* 283 * Define synthetic interrupt controller message flag 284 */ 285typedef union { 286 uint8_t as_uint8_t; 287 struct { 288 uint8_t message_pending:1; 289 uint8_t reserved:7; 290 } u; 291} hv_vmbus_msg_flags; 292 293typedef uint64_t hv_vmbus_partition_id; 294 295/* 296 * Define synthetic interrupt controller message header 297 */ 298typedef struct { 299 hv_vmbus_msg_type message_type; 300 uint8_t payload_size; 301 hv_vmbus_msg_flags message_flags; 302 uint8_t reserved[2]; 303 union { 304 hv_vmbus_partition_id sender; 305 hv_vmbus_port_id port; 306 } u; 307} hv_vmbus_msg_header; 308 309/* 310 * Define synthetic interrupt controller message format 311 */ 312typedef struct { 313 hv_vmbus_msg_header header; 314 union { 315 uint64_t payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; 316 } u ; 317} hv_vmbus_message; 318 319/* 320 * Maximum channels is determined by the size of the interrupt 321 * page which is PAGE_SIZE. 1/2 of PAGE_SIZE is for 322 * send endpoint interrupt and the other is receive 323 * endpoint interrupt. 324 * 325 * Note: (PAGE_SIZE >> 1) << 3 allocates 16348 channels 326 */ 327#define HV_MAX_NUM_CHANNELS (PAGE_SIZE >> 1) << 3 328 329/* 330 * (The value here must be in multiple of 32) 331 */ 332#define HV_MAX_NUM_CHANNELS_SUPPORTED 256 333 334/* 335 * VM Bus connection states 336 */ 337typedef enum { 338 HV_DISCONNECTED, 339 HV_CONNECTING, 340 HV_CONNECTED, 341 HV_DISCONNECTING 342} hv_vmbus_connect_state; 343 344#define HV_MAX_SIZE_CHANNEL_MESSAGE HV_MESSAGE_PAYLOAD_BYTE_COUNT 345 346 347typedef struct { 348 hv_vmbus_connect_state connect_state; 349 uint32_t next_gpadl_handle; 350 /** 351 * Represents channel interrupts. Each bit position 352 * represents a channel. 353 * When a channel sends an interrupt via VMBUS, it 354 * finds its bit in the send_interrupt_page, set it and 355 * calls Hv to generate a port event. The other end 356 * receives the port event and parse the 357 * recv_interrupt_page to see which bit is set 358 */ 359 void *interrupt_page; 360 void *send_interrupt_page; 361 void *recv_interrupt_page; 362 /* 363 * 2 pages - 1st page for parent->child 364 * notification and 2nd is child->parent 365 * notification 366 */ 367 void *monitor_pages; 368 TAILQ_HEAD(, hv_vmbus_channel_msg_info) channel_msg_anchor; 369 struct mtx channel_msg_lock; 370 /** 371 * List of channels 372 */ 373 TAILQ_HEAD(, hv_vmbus_channel) channel_anchor; 374 struct mtx channel_lock; 375 376 hv_vmbus_handle work_queue; 377 struct sema control_sema; 378} hv_vmbus_connection; 379 380/* 381 * Declare the MSR used to identify the guest OS 382 */ 383#define HV_X64_MSR_GUEST_OS_ID 0x40000000 384 385typedef union { 386 uint64_t as_uint64_t; 387 struct { 388 uint64_t build_number : 16; 389 uint64_t service_version : 8; /* Service Pack, etc. */ 390 uint64_t minor_version : 8; 391 uint64_t major_version : 8; 392 /* 393 * HV_GUEST_OS_MICROSOFT_IDS (If Vendor=MS) 394 * HV_GUEST_OS_VENDOR 395 */ 396 uint64_t os_id : 8; 397 uint64_t vendor_id : 16; 398 } u; 399} hv_vmbus_x64_msr_guest_os_id_contents; 400 401/* 402 * Declare the MSR used to setup pages used to communicate with the hypervisor 403 */ 404#define HV_X64_MSR_HYPERCALL 0x40000001 405 406typedef union { 407 uint64_t as_uint64_t; 408 struct { 409 uint64_t enable :1; 410 uint64_t reserved :11; 411 uint64_t guest_physical_address :52; 412 } u; 413} hv_vmbus_x64_msr_hypercall_contents; 414 415typedef union { 416 uint32_t as_uint32_t; 417 struct { 418 uint32_t group_enable :4; 419 uint32_t rsvd_z :28; 420 } u; 421} hv_vmbus_monitor_trigger_state; 422 423typedef union { 424 uint64_t as_uint64_t; 425 struct { 426 uint32_t pending; 427 uint32_t armed; 428 } u; 429} hv_vmbus_monitor_trigger_group; 430 431typedef struct { 432 hv_vmbus_connection_id connection_id; 433 uint16_t flag_number; 434 uint16_t rsvd_z; 435} hv_vmbus_monitor_parameter; 436 437/* 438 * hv_vmbus_monitor_page Layout 439 * ------------------------------------------------------ 440 * | 0 | trigger_state (4 bytes) | Rsvd1 (4 bytes) | 441 * | 8 | trigger_group[0] | 442 * | 10 | trigger_group[1] | 443 * | 18 | trigger_group[2] | 444 * | 20 | trigger_group[3] | 445 * | 28 | Rsvd2[0] | 446 * | 30 | Rsvd2[1] | 447 * | 38 | Rsvd2[2] | 448 * | 40 | next_check_time[0][0] | next_check_time[0][1] | 449 * | ... | 450 * | 240 | latency[0][0..3] | 451 * | 340 | Rsvz3[0] | 452 * | 440 | parameter[0][0] | 453 * | 448 | parameter[0][1] | 454 * | ... | 455 * | 840 | Rsvd4[0] | 456 * ------------------------------------------------------ 457 */ 458 459typedef struct { 460 hv_vmbus_monitor_trigger_state trigger_state; 461 uint32_t rsvd_z1; 462 463 hv_vmbus_monitor_trigger_group trigger_group[4]; 464 uint64_t rsvd_z2[3]; 465 466 int32_t next_check_time[4][32]; 467 468 uint16_t latency[4][32]; 469 uint64_t rsvd_z3[32]; 470 471 hv_vmbus_monitor_parameter parameter[4][32]; 472 473 uint8_t rsvd_z4[1984]; 474} hv_vmbus_monitor_page; 475 476/* 477 * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent 478 * is set by CPUID(HV_CPU_ID_FUNCTION_VERSION_AND_FEATURES). 479 */ 480typedef enum { 481 HV_CPU_ID_FUNCTION_VERSION_AND_FEATURES = 0x00000001, 482 HV_CPU_ID_FUNCTION_HV_VENDOR_AND_MAX_FUNCTION = 0x40000000, 483 HV_CPU_ID_FUNCTION_HV_INTERFACE = 0x40000001, 484 /* 485 * The remaining functions depend on the value 486 * of hv_cpu_id_function_interface 487 */ 488 HV_CPU_ID_FUNCTION_MS_HV_VERSION = 0x40000002, 489 HV_CPU_ID_FUNCTION_MS_HV_FEATURES = 0x40000003, 490 HV_CPU_ID_FUNCTION_MS_HV_ENLIGHTENMENT_INFORMATION = 0x40000004, 491 HV_CPU_ID_FUNCTION_MS_HV_IMPLEMENTATION_LIMITS = 0x40000005 492 493} hv_vmbus_cpuid_function; 494 495/* 496 * Define the format of the SIMP register 497 */ 498typedef union { 499 uint64_t as_uint64_t; 500 struct { 501 uint64_t simp_enabled : 1; 502 uint64_t preserved : 11; 503 uint64_t base_simp_gpa : 52; 504 } u; 505} hv_vmbus_synic_simp; 506 507/* 508 * Define the format of the SIEFP register 509 */ 510typedef union { 511 uint64_t as_uint64_t; 512 struct { 513 uint64_t siefp_enabled : 1; 514 uint64_t preserved : 11; 515 uint64_t base_siefp_gpa : 52; 516 } u; 517} hv_vmbus_synic_siefp; 518 519/* 520 * Define synthetic interrupt source 521 */ 522typedef union { 523 uint64_t as_uint64_t; 524 struct { 525 uint64_t vector : 8; 526 uint64_t reserved1 : 8; 527 uint64_t masked : 1; 528 uint64_t auto_eoi : 1; 529 uint64_t reserved2 : 46; 530 } u; 531} hv_vmbus_synic_sint; 532 533/* 534 * Define syn_ic control register 535 */ 536typedef union _hv_vmbus_synic_scontrol { 537 uint64_t as_uint64_t; 538 struct { 539 uint64_t enable : 1; 540 uint64_t reserved : 63; 541 } u; 542} hv_vmbus_synic_scontrol; 543 544/* 545 * Define the hv_vmbus_post_message hypercall input structure 546 */ 547typedef struct { 548 hv_vmbus_connection_id connection_id; 549 uint32_t reserved; 550 hv_vmbus_msg_type message_type; 551 uint32_t payload_size; 552 uint64_t payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; 553} hv_vmbus_input_post_message; 554 555/* 556 * Define the synthetic interrupt controller event flags format 557 */ 558typedef union { 559 uint8_t flags8[HV_EVENT_FLAGS_BYTE_COUNT]; 560 uint32_t flags32[HV_EVENT_FLAGS_DWORD_COUNT]; 561} hv_vmbus_synic_event_flags; 562 563 564/* 565 * Define synthetic interrupt controller model specific registers 566 */ 567#define HV_X64_MSR_SCONTROL (0x40000080) 568#define HV_X64_MSR_SVERSION (0x40000081) 569#define HV_X64_MSR_SIEFP (0x40000082) 570#define HV_X64_MSR_SIMP (0x40000083) 571#define HV_X64_MSR_EOM (0x40000084) 572 573#define HV_X64_MSR_SINT0 (0x40000090) 574#define HV_X64_MSR_SINT1 (0x40000091) 575#define HV_X64_MSR_SINT2 (0x40000092) 576#define HV_X64_MSR_SINT3 (0x40000093) 577#define HV_X64_MSR_SINT4 (0x40000094) 578#define HV_X64_MSR_SINT5 (0x40000095) 579#define HV_X64_MSR_SINT6 (0x40000096) 580#define HV_X64_MSR_SINT7 (0x40000097) 581#define HV_X64_MSR_SINT8 (0x40000098) 582#define HV_X64_MSR_SINT9 (0x40000099) 583#define HV_X64_MSR_SINT10 (0x4000009A) 584#define HV_X64_MSR_SINT11 (0x4000009B) 585#define HV_X64_MSR_SINT12 (0x4000009C) 586#define HV_X64_MSR_SINT13 (0x4000009D) 587#define HV_X64_MSR_SINT14 (0x4000009E) 588#define HV_X64_MSR_SINT15 (0x4000009F) 589 590/* 591 * Declare the various hypercall operations 592 */ 593typedef enum { 594 HV_CALL_POST_MESSAGE = 0x005c, 595 HV_CALL_SIGNAL_EVENT = 0x005d, 596} hv_vmbus_call_code; 597 598/** 599 * Global variables 600 */ 601 602extern hv_vmbus_context hv_vmbus_g_context; 603extern hv_vmbus_connection hv_vmbus_g_connection; 604 605 606/* 607 * Private, VM Bus functions 608 */ 609 610int hv_vmbus_ring_buffer_init( 611 hv_vmbus_ring_buffer_info *ring_info, 612 void *buffer, 613 uint32_t buffer_len); 614 615void hv_ring_buffer_cleanup( 616 hv_vmbus_ring_buffer_info *ring_info); 617 618int hv_ring_buffer_write( 619 hv_vmbus_ring_buffer_info *ring_info, 620 hv_vmbus_sg_buffer_list sg_buffers[], 621 uint32_t sg_buff_count); 622 623int hv_ring_buffer_peek( 624 hv_vmbus_ring_buffer_info *ring_info, 625 void *buffer, 626 uint32_t buffer_len); 627 628int hv_ring_buffer_read( 629 hv_vmbus_ring_buffer_info *ring_info, 630 void *buffer, 631 uint32_t buffer_len, 632 uint32_t offset); 633 634uint32_t hv_vmbus_get_ring_buffer_interrupt_mask( 635 hv_vmbus_ring_buffer_info *ring_info); 636 637void hv_vmbus_dump_ring_info( 638 hv_vmbus_ring_buffer_info *ring_info, 639 char *prefix); 640 641hv_vmbus_channel* hv_vmbus_allocate_channel(void); 642void hv_vmbus_free_vmbus_channel(hv_vmbus_channel *channel); 643void hv_vmbus_on_channel_message(void *context); 644int hv_vmbus_request_channel_offers(void); 645void hv_vmbus_release_unattached_channels(void); 646int hv_vmbus_init(void); 647void hv_vmbus_cleanup(void); 648 649uint16_t hv_vmbus_post_msg_via_msg_ipc( 650 hv_vmbus_connection_id connection_id, 651 hv_vmbus_msg_type message_type, 652 void *payload, 653 size_t payload_size); 654 655uint16_t hv_vmbus_signal_event(void); 656void hv_vmbus_synic_init(void *irq_arg); 657void hv_vmbus_synic_cleanup(void *arg); 658int hv_vmbus_query_hypervisor_presence(void); 659 660struct hv_device* hv_vmbus_child_device_create( 661 hv_guid device_type, 662 hv_guid device_instance, 663 hv_vmbus_channel *channel); 664 665int hv_vmbus_child_device_register( 666 struct hv_device *child_dev); 667int hv_vmbus_child_device_unregister( 668 struct hv_device *child_dev); 669hv_vmbus_channel* hv_vmbus_get_channel_from_rel_id(uint32_t rel_id); 670 671/** 672 * Connection interfaces 673 */ 674int hv_vmbus_connect(void); 675int hv_vmbus_disconnect(void); 676int hv_vmbus_post_message(void *buffer, size_t buf_size); 677int hv_vmbus_set_event(uint32_t child_rel_id); 678void hv_vmbus_on_events(void *); 679 680 681/* 682 * The guest OS needs to register the guest ID with the hypervisor. 683 * The guest ID is a 64 bit entity and the structure of this ID is 684 * specified in the Hyper-V specification: 685 * 686 * http://msdn.microsoft.com/en-us/library/windows/ 687 * hardware/ff542653%28v=vs.85%29.aspx 688 * 689 * While the current guideline does not specify how FreeBSD guest ID(s) 690 * need to be generated, our plan is to publish the guidelines for 691 * FreeBSD and other guest operating systems that currently are hosted 692 * on Hyper-V. The implementation here conforms to this yet 693 * unpublished guidelines. 694 * 695 * Bit(s) 696 * 63 - Indicates if the OS is Open Source or not; 1 is Open Source 697 * 62:56 - Os Type; Linux is 0x100, FreeBSD is 0x200 698 * 55:48 - Distro specific identification 699 * 47:16 - FreeBSD kernel version number 700 * 15:0 - Distro specific identification 701 * 702 */ 703 704#define HV_FREEBSD_VENDOR_ID 0x8200 705#define HV_FREEBSD_GUEST_ID hv_generate_guest_id(0,0) 706 707static inline uint64_t hv_generate_guest_id( 708 uint8_t distro_id_part1, 709 uint16_t distro_id_part2) 710{ 711 uint64_t guest_id; 712 guest_id = (((uint64_t)HV_FREEBSD_VENDOR_ID) << 48); 713 guest_id |= (((uint64_t)(distro_id_part1)) << 48); 714 guest_id |= (((uint64_t)(__FreeBSD_version)) << 16); /* in param.h */ 715 guest_id |= ((uint64_t)(distro_id_part2)); 716 return guest_id; 717} 718 719typedef struct { 720 unsigned int vector; 721 void *page_buffers[2]; 722} hv_setup_args; 723 724#endif /* __HYPERV_PRIV_H__ */ 725