Commit | Line | Data |
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5c473400 S |
1 | /* |
2 | * | |
3 | * Copyright (c) 2011, Microsoft Corporation. | |
4 | * | |
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. | |
8 | * | |
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 | |
12 | * more details. | |
13 | * | |
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. | |
17 | * | |
18 | * Authors: | |
19 | * Haiyang Zhang <haiyangz@microsoft.com> | |
20 | * Hank Janssen <hjanssen@microsoft.com> | |
21 | * K. Y. Srinivasan <kys@microsoft.com> | |
22 | * | |
23 | */ | |
3f335ea2 S |
24 | |
25 | #ifndef _HYPERV_H | |
26 | #define _HYPERV_H | |
27 | ||
2939437c S |
28 | #include <linux/types.h> |
29 | ||
6741335b S |
30 | /* |
31 | * Framework version for util services. | |
32 | */ | |
3a491605 S |
33 | #define UTIL_FW_MINOR 0 |
34 | ||
35 | #define UTIL_WS2K8_FW_MAJOR 1 | |
36 | #define UTIL_WS2K8_FW_VERSION (UTIL_WS2K8_FW_MAJOR << 16 | UTIL_FW_MINOR) | |
6741335b S |
37 | |
38 | #define UTIL_FW_MAJOR 3 | |
3a491605 | 39 | #define UTIL_FW_VERSION (UTIL_FW_MAJOR << 16 | UTIL_FW_MINOR) |
6741335b | 40 | |
96dd86fa S |
41 | |
42 | /* | |
43 | * Implementation of host controlled snapshot of the guest. | |
44 | */ | |
45 | ||
46 | #define VSS_OP_REGISTER 128 | |
47 | ||
48 | enum hv_vss_op { | |
49 | VSS_OP_CREATE = 0, | |
50 | VSS_OP_DELETE, | |
51 | VSS_OP_HOT_BACKUP, | |
52 | VSS_OP_GET_DM_INFO, | |
53 | VSS_OP_BU_COMPLETE, | |
54 | /* | |
55 | * Following operations are only supported with IC version >= 5.0 | |
56 | */ | |
57 | VSS_OP_FREEZE, /* Freeze the file systems in the VM */ | |
58 | VSS_OP_THAW, /* Unfreeze the file systems */ | |
59 | VSS_OP_AUTO_RECOVER, | |
60 | VSS_OP_COUNT /* Number of operations, must be last */ | |
61 | }; | |
62 | ||
63 | ||
64 | /* | |
65 | * Header for all VSS messages. | |
66 | */ | |
67 | struct hv_vss_hdr { | |
68 | __u8 operation; | |
69 | __u8 reserved[7]; | |
70 | } __attribute__((packed)); | |
71 | ||
72 | ||
73 | /* | |
74 | * Flag values for the hv_vss_check_feature. Linux supports only | |
75 | * one value. | |
76 | */ | |
77 | #define VSS_HBU_NO_AUTO_RECOVERY 0x00000005 | |
78 | ||
79 | struct hv_vss_check_feature { | |
80 | __u32 flags; | |
81 | } __attribute__((packed)); | |
82 | ||
83 | struct hv_vss_check_dm_info { | |
84 | __u32 flags; | |
85 | } __attribute__((packed)); | |
86 | ||
87 | struct hv_vss_msg { | |
88 | union { | |
89 | struct hv_vss_hdr vss_hdr; | |
90 | int error; | |
91 | }; | |
92 | union { | |
93 | struct hv_vss_check_feature vss_cf; | |
94 | struct hv_vss_check_dm_info dm_info; | |
95 | }; | |
96 | } __attribute__((packed)); | |
97 | ||
2939437c S |
98 | /* |
99 | * An implementation of HyperV key value pair (KVP) functionality for Linux. | |
100 | * | |
101 | * | |
102 | * Copyright (C) 2010, Novell, Inc. | |
103 | * Author : K. Y. Srinivasan <ksrinivasan@novell.com> | |
104 | * | |
105 | */ | |
106 | ||
107 | /* | |
108 | * Maximum value size - used for both key names and value data, and includes | |
109 | * any applicable NULL terminators. | |
110 | * | |
111 | * Note: This limit is somewhat arbitrary, but falls easily within what is | |
112 | * supported for all native guests (back to Win 2000) and what is reasonable | |
113 | * for the IC KVP exchange functionality. Note that Windows Me/98/95 are | |
114 | * limited to 255 character key names. | |
115 | * | |
116 | * MSDN recommends not storing data values larger than 2048 bytes in the | |
117 | * registry. | |
118 | * | |
119 | * Note: This value is used in defining the KVP exchange message - this value | |
120 | * cannot be modified without affecting the message size and compatibility. | |
121 | */ | |
122 | ||
123 | /* | |
124 | * bytes, including any null terminators | |
125 | */ | |
126 | #define HV_KVP_EXCHANGE_MAX_VALUE_SIZE (2048) | |
127 | ||
128 | ||
129 | /* | |
130 | * Maximum key size - the registry limit for the length of an entry name | |
131 | * is 256 characters, including the null terminator | |
132 | */ | |
133 | ||
134 | #define HV_KVP_EXCHANGE_MAX_KEY_SIZE (512) | |
135 | ||
136 | /* | |
137 | * In Linux, we implement the KVP functionality in two components: | |
138 | * 1) The kernel component which is packaged as part of the hv_utils driver | |
139 | * is responsible for communicating with the host and responsible for | |
140 | * implementing the host/guest protocol. 2) A user level daemon that is | |
141 | * responsible for data gathering. | |
142 | * | |
143 | * Host/Guest Protocol: The host iterates over an index and expects the guest | |
144 | * to assign a key name to the index and also return the value corresponding to | |
145 | * the key. The host will have atmost one KVP transaction outstanding at any | |
146 | * given point in time. The host side iteration stops when the guest returns | |
147 | * an error. Microsoft has specified the following mapping of key names to | |
148 | * host specified index: | |
149 | * | |
150 | * Index Key Name | |
151 | * 0 FullyQualifiedDomainName | |
152 | * 1 IntegrationServicesVersion | |
153 | * 2 NetworkAddressIPv4 | |
154 | * 3 NetworkAddressIPv6 | |
155 | * 4 OSBuildNumber | |
156 | * 5 OSName | |
157 | * 6 OSMajorVersion | |
158 | * 7 OSMinorVersion | |
159 | * 8 OSVersion | |
160 | * 9 ProcessorArchitecture | |
161 | * | |
162 | * The Windows host expects the Key Name and Key Value to be encoded in utf16. | |
163 | * | |
164 | * Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the | |
165 | * data gathering functionality in a user mode daemon. The user level daemon | |
166 | * is also responsible for binding the key name to the index as well. The | |
167 | * kernel and user-level daemon communicate using a connector channel. | |
168 | * | |
169 | * The user mode component first registers with the | |
170 | * the kernel component. Subsequently, the kernel component requests, data | |
171 | * for the specified keys. In response to this message the user mode component | |
172 | * fills in the value corresponding to the specified key. We overload the | |
173 | * sequence field in the cn_msg header to define our KVP message types. | |
174 | * | |
175 | * | |
176 | * The kernel component simply acts as a conduit for communication between the | |
177 | * Windows host and the user-level daemon. The kernel component passes up the | |
178 | * index received from the Host to the user-level daemon. If the index is | |
179 | * valid (supported), the corresponding key as well as its | |
180 | * value (both are strings) is returned. If the index is invalid | |
181 | * (not supported), a NULL key string is returned. | |
182 | */ | |
183 | ||
2939437c S |
184 | |
185 | /* | |
186 | * Registry value types. | |
187 | */ | |
188 | ||
189 | #define REG_SZ 1 | |
fa3d5b85 S |
190 | #define REG_U32 4 |
191 | #define REG_U64 8 | |
2939437c | 192 | |
9b595780 S |
193 | /* |
194 | * As we look at expanding the KVP functionality to include | |
195 | * IP injection functionality, we need to maintain binary | |
196 | * compatibility with older daemons. | |
197 | * | |
198 | * The KVP opcodes are defined by the host and it was unfortunate | |
199 | * that I chose to treat the registration operation as part of the | |
200 | * KVP operations defined by the host. | |
201 | * Here is the level of compatibility | |
202 | * (between the user level daemon and the kernel KVP driver) that we | |
203 | * will implement: | |
204 | * | |
205 | * An older daemon will always be supported on a newer driver. | |
206 | * A given user level daemon will require a minimal version of the | |
207 | * kernel driver. | |
208 | * If we cannot handle the version differences, we will fail gracefully | |
209 | * (this can happen when we have a user level daemon that is more | |
210 | * advanced than the KVP driver. | |
211 | * | |
212 | * We will use values used in this handshake for determining if we have | |
213 | * workable user level daemon and the kernel driver. We begin by taking the | |
214 | * registration opcode out of the KVP opcode namespace. We will however, | |
215 | * maintain compatibility with the existing user-level daemon code. | |
216 | */ | |
217 | ||
218 | /* | |
219 | * Daemon code not supporting IP injection (legacy daemon). | |
220 | */ | |
221 | ||
222 | #define KVP_OP_REGISTER 4 | |
223 | ||
224 | /* | |
225 | * Daemon code supporting IP injection. | |
226 | * The KVP opcode field is used to communicate the | |
227 | * registration information; so define a namespace that | |
228 | * will be distinct from the host defined KVP opcode. | |
229 | */ | |
230 | ||
231 | #define KVP_OP_REGISTER1 100 | |
232 | ||
2939437c S |
233 | enum hv_kvp_exchg_op { |
234 | KVP_OP_GET = 0, | |
235 | KVP_OP_SET, | |
236 | KVP_OP_DELETE, | |
237 | KVP_OP_ENUMERATE, | |
9b595780 S |
238 | KVP_OP_GET_IP_INFO, |
239 | KVP_OP_SET_IP_INFO, | |
2939437c S |
240 | KVP_OP_COUNT /* Number of operations, must be last. */ |
241 | }; | |
242 | ||
243 | enum hv_kvp_exchg_pool { | |
244 | KVP_POOL_EXTERNAL = 0, | |
245 | KVP_POOL_GUEST, | |
246 | KVP_POOL_AUTO, | |
247 | KVP_POOL_AUTO_EXTERNAL, | |
248 | KVP_POOL_AUTO_INTERNAL, | |
249 | KVP_POOL_COUNT /* Number of pools, must be last. */ | |
250 | }; | |
251 | ||
b47a81dc S |
252 | /* |
253 | * Some Hyper-V status codes. | |
254 | */ | |
255 | ||
256 | #define HV_S_OK 0x00000000 | |
257 | #define HV_E_FAIL 0x80004005 | |
258 | #define HV_S_CONT 0x80070103 | |
259 | #define HV_ERROR_NOT_SUPPORTED 0x80070032 | |
260 | #define HV_ERROR_MACHINE_LOCKED 0x800704F7 | |
261 | #define HV_ERROR_DEVICE_NOT_CONNECTED 0x8007048F | |
32061b4d S |
262 | #define HV_INVALIDARG 0x80070057 |
263 | #define HV_GUID_NOTFOUND 0x80041002 | |
b47a81dc | 264 | |
9b595780 S |
265 | #define ADDR_FAMILY_NONE 0x00 |
266 | #define ADDR_FAMILY_IPV4 0x01 | |
267 | #define ADDR_FAMILY_IPV6 0x02 | |
268 | ||
269 | #define MAX_ADAPTER_ID_SIZE 128 | |
270 | #define MAX_IP_ADDR_SIZE 1024 | |
271 | #define MAX_GATEWAY_SIZE 512 | |
272 | ||
273 | ||
274 | struct hv_kvp_ipaddr_value { | |
275 | __u16 adapter_id[MAX_ADAPTER_ID_SIZE]; | |
276 | __u8 addr_family; | |
277 | __u8 dhcp_enabled; | |
278 | __u16 ip_addr[MAX_IP_ADDR_SIZE]; | |
279 | __u16 sub_net[MAX_IP_ADDR_SIZE]; | |
280 | __u16 gate_way[MAX_GATEWAY_SIZE]; | |
281 | __u16 dns_addr[MAX_IP_ADDR_SIZE]; | |
282 | } __attribute__((packed)); | |
283 | ||
284 | ||
2939437c | 285 | struct hv_kvp_hdr { |
59a084a7 S |
286 | __u8 operation; |
287 | __u8 pool; | |
288 | __u16 pad; | |
289 | } __attribute__((packed)); | |
2939437c S |
290 | |
291 | struct hv_kvp_exchg_msg_value { | |
59a084a7 S |
292 | __u32 value_type; |
293 | __u32 key_size; | |
294 | __u32 value_size; | |
295 | __u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; | |
e485ceac S |
296 | union { |
297 | __u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; | |
298 | __u32 value_u32; | |
299 | __u64 value_u64; | |
300 | }; | |
59a084a7 | 301 | } __attribute__((packed)); |
2939437c S |
302 | |
303 | struct hv_kvp_msg_enumerate { | |
59a084a7 | 304 | __u32 index; |
2939437c | 305 | struct hv_kvp_exchg_msg_value data; |
59a084a7 | 306 | } __attribute__((packed)); |
2939437c | 307 | |
e485ceac S |
308 | struct hv_kvp_msg_get { |
309 | struct hv_kvp_exchg_msg_value data; | |
310 | }; | |
311 | ||
312 | struct hv_kvp_msg_set { | |
313 | struct hv_kvp_exchg_msg_value data; | |
314 | }; | |
315 | ||
316 | struct hv_kvp_msg_delete { | |
317 | __u32 key_size; | |
318 | __u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; | |
319 | }; | |
320 | ||
321 | struct hv_kvp_register { | |
322 | __u8 version[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; | |
323 | }; | |
324 | ||
2939437c | 325 | struct hv_kvp_msg { |
9b595780 S |
326 | union { |
327 | struct hv_kvp_hdr kvp_hdr; | |
328 | int error; | |
329 | }; | |
26403354 | 330 | union { |
e485ceac S |
331 | struct hv_kvp_msg_get kvp_get; |
332 | struct hv_kvp_msg_set kvp_set; | |
333 | struct hv_kvp_msg_delete kvp_delete; | |
334 | struct hv_kvp_msg_enumerate kvp_enum_data; | |
9b595780 | 335 | struct hv_kvp_ipaddr_value kvp_ip_val; |
e485ceac | 336 | struct hv_kvp_register kvp_register; |
26403354 | 337 | } body; |
59a084a7 | 338 | } __attribute__((packed)); |
2939437c | 339 | |
9b595780 S |
340 | struct hv_kvp_ip_msg { |
341 | __u8 operation; | |
342 | __u8 pool; | |
343 | struct hv_kvp_ipaddr_value kvp_ip_val; | |
344 | } __attribute__((packed)); | |
345 | ||
59a084a7 | 346 | #ifdef __KERNEL__ |
8ff3e6fc S |
347 | #include <linux/scatterlist.h> |
348 | #include <linux/list.h> | |
358d2ee2 | 349 | #include <linux/uuid.h> |
8ff3e6fc S |
350 | #include <linux/timer.h> |
351 | #include <linux/workqueue.h> | |
352 | #include <linux/completion.h> | |
353 | #include <linux/device.h> | |
2e2c1d17 | 354 | #include <linux/mod_devicetable.h> |
8ff3e6fc S |
355 | |
356 | ||
c31c151b | 357 | #define MAX_PAGE_BUFFER_COUNT 19 |
a363bf7b S |
358 | #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ |
359 | ||
360 | #pragma pack(push, 1) | |
361 | ||
362 | /* Single-page buffer */ | |
363 | struct hv_page_buffer { | |
364 | u32 len; | |
365 | u32 offset; | |
366 | u64 pfn; | |
367 | }; | |
368 | ||
369 | /* Multiple-page buffer */ | |
370 | struct hv_multipage_buffer { | |
371 | /* Length and Offset determines the # of pfns in the array */ | |
372 | u32 len; | |
373 | u32 offset; | |
374 | u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT]; | |
375 | }; | |
376 | ||
377 | /* 0x18 includes the proprietary packet header */ | |
378 | #define MAX_PAGE_BUFFER_PACKET (0x18 + \ | |
379 | (sizeof(struct hv_page_buffer) * \ | |
380 | MAX_PAGE_BUFFER_COUNT)) | |
381 | #define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \ | |
382 | sizeof(struct hv_multipage_buffer)) | |
383 | ||
384 | ||
385 | #pragma pack(pop) | |
386 | ||
7effffb7 S |
387 | struct hv_ring_buffer { |
388 | /* Offset in bytes from the start of ring data below */ | |
389 | u32 write_index; | |
390 | ||
391 | /* Offset in bytes from the start of ring data below */ | |
392 | u32 read_index; | |
393 | ||
394 | u32 interrupt_mask; | |
395 | ||
2416603e S |
396 | /* |
397 | * Win8 uses some of the reserved bits to implement | |
398 | * interrupt driven flow management. On the send side | |
399 | * we can request that the receiver interrupt the sender | |
400 | * when the ring transitions from being full to being able | |
401 | * to handle a message of size "pending_send_sz". | |
402 | * | |
403 | * Add necessary state for this enhancement. | |
7effffb7 | 404 | */ |
2416603e S |
405 | u32 pending_send_sz; |
406 | ||
407 | u32 reserved1[12]; | |
408 | ||
409 | union { | |
410 | struct { | |
411 | u32 feat_pending_send_sz:1; | |
412 | }; | |
413 | u32 value; | |
414 | } feature_bits; | |
415 | ||
416 | /* Pad it to PAGE_SIZE so that data starts on page boundary */ | |
417 | u8 reserved2[4028]; | |
7effffb7 S |
418 | |
419 | /* | |
420 | * Ring data starts here + RingDataStartOffset | |
421 | * !!! DO NOT place any fields below this !!! | |
422 | */ | |
423 | u8 buffer[0]; | |
424 | } __packed; | |
425 | ||
426 | struct hv_ring_buffer_info { | |
427 | struct hv_ring_buffer *ring_buffer; | |
428 | u32 ring_size; /* Include the shared header */ | |
429 | spinlock_t ring_lock; | |
430 | ||
431 | u32 ring_datasize; /* < ring_size */ | |
432 | u32 ring_data_startoffset; | |
433 | }; | |
434 | ||
33be96e4 HZ |
435 | /* |
436 | * | |
437 | * hv_get_ringbuffer_availbytes() | |
438 | * | |
439 | * Get number of bytes available to read and to write to | |
440 | * for the specified ring buffer | |
441 | */ | |
442 | static inline void | |
443 | hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, | |
444 | u32 *read, u32 *write) | |
445 | { | |
446 | u32 read_loc, write_loc, dsize; | |
447 | ||
448 | smp_read_barrier_depends(); | |
449 | ||
450 | /* Capture the read/write indices before they changed */ | |
451 | read_loc = rbi->ring_buffer->read_index; | |
452 | write_loc = rbi->ring_buffer->write_index; | |
453 | dsize = rbi->ring_datasize; | |
454 | ||
455 | *write = write_loc >= read_loc ? dsize - (write_loc - read_loc) : | |
456 | read_loc - write_loc; | |
457 | *read = dsize - *write; | |
458 | } | |
459 | ||
eafa7072 S |
460 | /* |
461 | * VMBUS version is 32 bit entity broken up into | |
462 | * two 16 bit quantities: major_number. minor_number. | |
463 | * | |
464 | * 0 . 13 (Windows Server 2008) | |
465 | * 1 . 1 (Windows 7) | |
466 | * 2 . 4 (Windows 8) | |
467 | */ | |
468 | ||
469 | #define VERSION_WS2008 ((0 << 16) | (13)) | |
470 | #define VERSION_WIN7 ((1 << 16) | (1)) | |
471 | #define VERSION_WIN8 ((2 << 16) | (4)) | |
472 | ||
473 | #define VERSION_INVAL -1 | |
474 | ||
2a5c43a8 | 475 | #define VERSION_CURRENT VERSION_WIN8 |
f7c6dfda | 476 | |
517d8dc6 S |
477 | /* Make maximum size of pipe payload of 16K */ |
478 | #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) | |
479 | ||
480 | /* Define PipeMode values. */ | |
481 | #define VMBUS_PIPE_TYPE_BYTE 0x00000000 | |
482 | #define VMBUS_PIPE_TYPE_MESSAGE 0x00000004 | |
483 | ||
484 | /* The size of the user defined data buffer for non-pipe offers. */ | |
485 | #define MAX_USER_DEFINED_BYTES 120 | |
486 | ||
487 | /* The size of the user defined data buffer for pipe offers. */ | |
488 | #define MAX_PIPE_USER_DEFINED_BYTES 116 | |
489 | ||
490 | /* | |
491 | * At the center of the Channel Management library is the Channel Offer. This | |
492 | * struct contains the fundamental information about an offer. | |
493 | */ | |
494 | struct vmbus_channel_offer { | |
358d2ee2 S |
495 | uuid_le if_type; |
496 | uuid_le if_instance; | |
29423b7e S |
497 | |
498 | /* | |
499 | * These two fields are not currently used. | |
500 | */ | |
501 | u64 reserved1; | |
502 | u64 reserved2; | |
503 | ||
517d8dc6 S |
504 | u16 chn_flags; |
505 | u16 mmio_megabytes; /* in bytes * 1024 * 1024 */ | |
506 | ||
507 | union { | |
508 | /* Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes. */ | |
509 | struct { | |
510 | unsigned char user_def[MAX_USER_DEFINED_BYTES]; | |
511 | } std; | |
512 | ||
513 | /* | |
514 | * Pipes: | |
515 | * The following sructure is an integrated pipe protocol, which | |
516 | * is implemented on top of standard user-defined data. Pipe | |
517 | * clients have MAX_PIPE_USER_DEFINED_BYTES left for their own | |
518 | * use. | |
519 | */ | |
520 | struct { | |
521 | u32 pipe_mode; | |
522 | unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES]; | |
523 | } pipe; | |
524 | } u; | |
29423b7e S |
525 | /* |
526 | * The sub_channel_index is defined in win8. | |
527 | */ | |
528 | u16 sub_channel_index; | |
529 | u16 reserved3; | |
517d8dc6 S |
530 | } __packed; |
531 | ||
532 | /* Server Flags */ | |
533 | #define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1 | |
534 | #define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2 | |
535 | #define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4 | |
536 | #define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10 | |
537 | #define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100 | |
538 | #define VMBUS_CHANNEL_PARENT_OFFER 0x200 | |
539 | #define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400 | |
540 | ||
50ed40e0 S |
541 | struct vmpacket_descriptor { |
542 | u16 type; | |
543 | u16 offset8; | |
544 | u16 len8; | |
545 | u16 flags; | |
546 | u64 trans_id; | |
547 | } __packed; | |
548 | ||
549 | struct vmpacket_header { | |
550 | u32 prev_pkt_start_offset; | |
551 | struct vmpacket_descriptor descriptor; | |
552 | } __packed; | |
553 | ||
554 | struct vmtransfer_page_range { | |
555 | u32 byte_count; | |
556 | u32 byte_offset; | |
557 | } __packed; | |
558 | ||
559 | struct vmtransfer_page_packet_header { | |
560 | struct vmpacket_descriptor d; | |
561 | u16 xfer_pageset_id; | |
1508d811 | 562 | u8 sender_owns_set; |
50ed40e0 S |
563 | u8 reserved; |
564 | u32 range_cnt; | |
565 | struct vmtransfer_page_range ranges[1]; | |
566 | } __packed; | |
567 | ||
568 | struct vmgpadl_packet_header { | |
569 | struct vmpacket_descriptor d; | |
570 | u32 gpadl; | |
571 | u32 reserved; | |
572 | } __packed; | |
573 | ||
574 | struct vmadd_remove_transfer_page_set { | |
575 | struct vmpacket_descriptor d; | |
576 | u32 gpadl; | |
577 | u16 xfer_pageset_id; | |
578 | u16 reserved; | |
579 | } __packed; | |
580 | ||
581 | /* | |
582 | * This structure defines a range in guest physical space that can be made to | |
583 | * look virtually contiguous. | |
584 | */ | |
585 | struct gpa_range { | |
586 | u32 byte_count; | |
587 | u32 byte_offset; | |
588 | u64 pfn_array[0]; | |
589 | }; | |
590 | ||
591 | /* | |
592 | * This is the format for an Establish Gpadl packet, which contains a handle by | |
593 | * which this GPADL will be known and a set of GPA ranges associated with it. | |
594 | * This can be converted to a MDL by the guest OS. If there are multiple GPA | |
595 | * ranges, then the resulting MDL will be "chained," representing multiple VA | |
596 | * ranges. | |
597 | */ | |
598 | struct vmestablish_gpadl { | |
599 | struct vmpacket_descriptor d; | |
600 | u32 gpadl; | |
601 | u32 range_cnt; | |
602 | struct gpa_range range[1]; | |
603 | } __packed; | |
604 | ||
605 | /* | |
606 | * This is the format for a Teardown Gpadl packet, which indicates that the | |
607 | * GPADL handle in the Establish Gpadl packet will never be referenced again. | |
608 | */ | |
609 | struct vmteardown_gpadl { | |
610 | struct vmpacket_descriptor d; | |
611 | u32 gpadl; | |
612 | u32 reserved; /* for alignment to a 8-byte boundary */ | |
613 | } __packed; | |
614 | ||
615 | /* | |
616 | * This is the format for a GPA-Direct packet, which contains a set of GPA | |
617 | * ranges, in addition to commands and/or data. | |
618 | */ | |
619 | struct vmdata_gpa_direct { | |
620 | struct vmpacket_descriptor d; | |
621 | u32 reserved; | |
622 | u32 range_cnt; | |
623 | struct gpa_range range[1]; | |
624 | } __packed; | |
625 | ||
626 | /* This is the format for a Additional Data Packet. */ | |
627 | struct vmadditional_data { | |
628 | struct vmpacket_descriptor d; | |
629 | u64 total_bytes; | |
630 | u32 offset; | |
631 | u32 byte_cnt; | |
632 | unsigned char data[1]; | |
633 | } __packed; | |
634 | ||
635 | union vmpacket_largest_possible_header { | |
636 | struct vmpacket_descriptor simple_hdr; | |
637 | struct vmtransfer_page_packet_header xfer_page_hdr; | |
638 | struct vmgpadl_packet_header gpadl_hdr; | |
639 | struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr; | |
640 | struct vmestablish_gpadl establish_gpadl_hdr; | |
641 | struct vmteardown_gpadl teardown_gpadl_hdr; | |
642 | struct vmdata_gpa_direct data_gpa_direct_hdr; | |
643 | }; | |
644 | ||
645 | #define VMPACKET_DATA_START_ADDRESS(__packet) \ | |
646 | (void *)(((unsigned char *)__packet) + \ | |
647 | ((struct vmpacket_descriptor)__packet)->offset8 * 8) | |
648 | ||
649 | #define VMPACKET_DATA_LENGTH(__packet) \ | |
650 | ((((struct vmpacket_descriptor)__packet)->len8 - \ | |
651 | ((struct vmpacket_descriptor)__packet)->offset8) * 8) | |
652 | ||
653 | #define VMPACKET_TRANSFER_MODE(__packet) \ | |
654 | (((struct IMPACT)__packet)->type) | |
655 | ||
656 | enum vmbus_packet_type { | |
657 | VM_PKT_INVALID = 0x0, | |
658 | VM_PKT_SYNCH = 0x1, | |
659 | VM_PKT_ADD_XFER_PAGESET = 0x2, | |
660 | VM_PKT_RM_XFER_PAGESET = 0x3, | |
661 | VM_PKT_ESTABLISH_GPADL = 0x4, | |
662 | VM_PKT_TEARDOWN_GPADL = 0x5, | |
663 | VM_PKT_DATA_INBAND = 0x6, | |
664 | VM_PKT_DATA_USING_XFER_PAGES = 0x7, | |
665 | VM_PKT_DATA_USING_GPADL = 0x8, | |
666 | VM_PKT_DATA_USING_GPA_DIRECT = 0x9, | |
667 | VM_PKT_CANCEL_REQUEST = 0xa, | |
668 | VM_PKT_COMP = 0xb, | |
669 | VM_PKT_DATA_USING_ADDITIONAL_PKT = 0xc, | |
670 | VM_PKT_ADDITIONAL_DATA = 0xd | |
671 | }; | |
672 | ||
673 | #define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1 | |
517d8dc6 | 674 | |
b56dda06 | 675 | |
b56dda06 S |
676 | /* Version 1 messages */ |
677 | enum vmbus_channel_message_type { | |
678 | CHANNELMSG_INVALID = 0, | |
679 | CHANNELMSG_OFFERCHANNEL = 1, | |
680 | CHANNELMSG_RESCIND_CHANNELOFFER = 2, | |
681 | CHANNELMSG_REQUESTOFFERS = 3, | |
682 | CHANNELMSG_ALLOFFERS_DELIVERED = 4, | |
683 | CHANNELMSG_OPENCHANNEL = 5, | |
684 | CHANNELMSG_OPENCHANNEL_RESULT = 6, | |
685 | CHANNELMSG_CLOSECHANNEL = 7, | |
686 | CHANNELMSG_GPADL_HEADER = 8, | |
687 | CHANNELMSG_GPADL_BODY = 9, | |
688 | CHANNELMSG_GPADL_CREATED = 10, | |
689 | CHANNELMSG_GPADL_TEARDOWN = 11, | |
690 | CHANNELMSG_GPADL_TORNDOWN = 12, | |
691 | CHANNELMSG_RELID_RELEASED = 13, | |
692 | CHANNELMSG_INITIATE_CONTACT = 14, | |
693 | CHANNELMSG_VERSION_RESPONSE = 15, | |
694 | CHANNELMSG_UNLOAD = 16, | |
695 | #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD | |
696 | CHANNELMSG_VIEWRANGE_ADD = 17, | |
697 | CHANNELMSG_VIEWRANGE_REMOVE = 18, | |
698 | #endif | |
699 | CHANNELMSG_COUNT | |
700 | }; | |
701 | ||
702 | struct vmbus_channel_message_header { | |
703 | enum vmbus_channel_message_type msgtype; | |
704 | u32 padding; | |
705 | } __packed; | |
706 | ||
707 | /* Query VMBus Version parameters */ | |
708 | struct vmbus_channel_query_vmbus_version { | |
709 | struct vmbus_channel_message_header header; | |
710 | u32 version; | |
711 | } __packed; | |
712 | ||
713 | /* VMBus Version Supported parameters */ | |
714 | struct vmbus_channel_version_supported { | |
715 | struct vmbus_channel_message_header header; | |
1508d811 | 716 | u8 version_supported; |
b56dda06 S |
717 | } __packed; |
718 | ||
719 | /* Offer Channel parameters */ | |
720 | struct vmbus_channel_offer_channel { | |
721 | struct vmbus_channel_message_header header; | |
722 | struct vmbus_channel_offer offer; | |
723 | u32 child_relid; | |
724 | u8 monitorid; | |
29423b7e S |
725 | /* |
726 | * win7 and beyond splits this field into a bit field. | |
727 | */ | |
728 | u8 monitor_allocated:1; | |
729 | u8 reserved:7; | |
730 | /* | |
731 | * These are new fields added in win7 and later. | |
732 | * Do not access these fields without checking the | |
733 | * negotiated protocol. | |
734 | * | |
735 | * If "is_dedicated_interrupt" is set, we must not set the | |
736 | * associated bit in the channel bitmap while sending the | |
737 | * interrupt to the host. | |
738 | * | |
739 | * connection_id is to be used in signaling the host. | |
740 | */ | |
741 | u16 is_dedicated_interrupt:1; | |
742 | u16 reserved1:15; | |
743 | u32 connection_id; | |
b56dda06 S |
744 | } __packed; |
745 | ||
746 | /* Rescind Offer parameters */ | |
747 | struct vmbus_channel_rescind_offer { | |
748 | struct vmbus_channel_message_header header; | |
749 | u32 child_relid; | |
750 | } __packed; | |
751 | ||
752 | /* | |
753 | * Request Offer -- no parameters, SynIC message contains the partition ID | |
754 | * Set Snoop -- no parameters, SynIC message contains the partition ID | |
755 | * Clear Snoop -- no parameters, SynIC message contains the partition ID | |
756 | * All Offers Delivered -- no parameters, SynIC message contains the partition | |
757 | * ID | |
758 | * Flush Client -- no parameters, SynIC message contains the partition ID | |
759 | */ | |
760 | ||
761 | /* Open Channel parameters */ | |
762 | struct vmbus_channel_open_channel { | |
763 | struct vmbus_channel_message_header header; | |
764 | ||
765 | /* Identifies the specific VMBus channel that is being opened. */ | |
766 | u32 child_relid; | |
767 | ||
768 | /* ID making a particular open request at a channel offer unique. */ | |
769 | u32 openid; | |
770 | ||
771 | /* GPADL for the channel's ring buffer. */ | |
772 | u32 ringbuffer_gpadlhandle; | |
773 | ||
abbf3b2a S |
774 | /* |
775 | * Starting with win8, this field will be used to specify | |
776 | * the target virtual processor on which to deliver the interrupt for | |
777 | * the host to guest communication. | |
778 | * Prior to win8, incoming channel interrupts would only | |
779 | * be delivered on cpu 0. Setting this value to 0 would | |
780 | * preserve the earlier behavior. | |
781 | */ | |
782 | u32 target_vp; | |
b56dda06 S |
783 | |
784 | /* | |
785 | * The upstream ring buffer begins at offset zero in the memory | |
786 | * described by RingBufferGpadlHandle. The downstream ring buffer | |
787 | * follows it at this offset (in pages). | |
788 | */ | |
789 | u32 downstream_ringbuffer_pageoffset; | |
790 | ||
791 | /* User-specific data to be passed along to the server endpoint. */ | |
792 | unsigned char userdata[MAX_USER_DEFINED_BYTES]; | |
793 | } __packed; | |
794 | ||
795 | /* Open Channel Result parameters */ | |
796 | struct vmbus_channel_open_result { | |
797 | struct vmbus_channel_message_header header; | |
798 | u32 child_relid; | |
799 | u32 openid; | |
800 | u32 status; | |
801 | } __packed; | |
802 | ||
803 | /* Close channel parameters; */ | |
804 | struct vmbus_channel_close_channel { | |
805 | struct vmbus_channel_message_header header; | |
806 | u32 child_relid; | |
807 | } __packed; | |
808 | ||
809 | /* Channel Message GPADL */ | |
810 | #define GPADL_TYPE_RING_BUFFER 1 | |
811 | #define GPADL_TYPE_SERVER_SAVE_AREA 2 | |
812 | #define GPADL_TYPE_TRANSACTION 8 | |
813 | ||
814 | /* | |
815 | * The number of PFNs in a GPADL message is defined by the number of | |
816 | * pages that would be spanned by ByteCount and ByteOffset. If the | |
817 | * implied number of PFNs won't fit in this packet, there will be a | |
818 | * follow-up packet that contains more. | |
819 | */ | |
820 | struct vmbus_channel_gpadl_header { | |
821 | struct vmbus_channel_message_header header; | |
822 | u32 child_relid; | |
823 | u32 gpadl; | |
824 | u16 range_buflen; | |
825 | u16 rangecount; | |
826 | struct gpa_range range[0]; | |
827 | } __packed; | |
828 | ||
829 | /* This is the followup packet that contains more PFNs. */ | |
830 | struct vmbus_channel_gpadl_body { | |
831 | struct vmbus_channel_message_header header; | |
832 | u32 msgnumber; | |
833 | u32 gpadl; | |
834 | u64 pfn[0]; | |
835 | } __packed; | |
836 | ||
837 | struct vmbus_channel_gpadl_created { | |
838 | struct vmbus_channel_message_header header; | |
839 | u32 child_relid; | |
840 | u32 gpadl; | |
841 | u32 creation_status; | |
842 | } __packed; | |
843 | ||
844 | struct vmbus_channel_gpadl_teardown { | |
845 | struct vmbus_channel_message_header header; | |
846 | u32 child_relid; | |
847 | u32 gpadl; | |
848 | } __packed; | |
849 | ||
850 | struct vmbus_channel_gpadl_torndown { | |
851 | struct vmbus_channel_message_header header; | |
852 | u32 gpadl; | |
853 | } __packed; | |
854 | ||
855 | #ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD | |
856 | struct vmbus_channel_view_range_add { | |
857 | struct vmbus_channel_message_header header; | |
858 | PHYSICAL_ADDRESS viewrange_base; | |
859 | u64 viewrange_length; | |
860 | u32 child_relid; | |
861 | } __packed; | |
862 | ||
863 | struct vmbus_channel_view_range_remove { | |
864 | struct vmbus_channel_message_header header; | |
865 | PHYSICAL_ADDRESS viewrange_base; | |
866 | u32 child_relid; | |
867 | } __packed; | |
868 | #endif | |
869 | ||
870 | struct vmbus_channel_relid_released { | |
871 | struct vmbus_channel_message_header header; | |
872 | u32 child_relid; | |
873 | } __packed; | |
874 | ||
875 | struct vmbus_channel_initiate_contact { | |
876 | struct vmbus_channel_message_header header; | |
877 | u32 vmbus_version_requested; | |
878 | u32 padding2; | |
879 | u64 interrupt_page; | |
880 | u64 monitor_page1; | |
881 | u64 monitor_page2; | |
882 | } __packed; | |
883 | ||
884 | struct vmbus_channel_version_response { | |
885 | struct vmbus_channel_message_header header; | |
1508d811 | 886 | u8 version_supported; |
b56dda06 S |
887 | } __packed; |
888 | ||
889 | enum vmbus_channel_state { | |
890 | CHANNEL_OFFER_STATE, | |
891 | CHANNEL_OPENING_STATE, | |
892 | CHANNEL_OPEN_STATE, | |
e68d2971 | 893 | CHANNEL_OPENED_STATE, |
b56dda06 S |
894 | }; |
895 | ||
b56dda06 S |
896 | /* |
897 | * Represents each channel msg on the vmbus connection This is a | |
898 | * variable-size data structure depending on the msg type itself | |
899 | */ | |
900 | struct vmbus_channel_msginfo { | |
901 | /* Bookkeeping stuff */ | |
902 | struct list_head msglistentry; | |
903 | ||
904 | /* So far, this is only used to handle gpadl body message */ | |
905 | struct list_head submsglist; | |
906 | ||
907 | /* Synchronize the request/response if needed */ | |
908 | struct completion waitevent; | |
909 | union { | |
910 | struct vmbus_channel_version_supported version_supported; | |
911 | struct vmbus_channel_open_result open_result; | |
912 | struct vmbus_channel_gpadl_torndown gpadl_torndown; | |
913 | struct vmbus_channel_gpadl_created gpadl_created; | |
914 | struct vmbus_channel_version_response version_response; | |
915 | } response; | |
916 | ||
917 | u32 msgsize; | |
918 | /* | |
919 | * The channel message that goes out on the "wire". | |
920 | * It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header | |
921 | */ | |
922 | unsigned char msg[0]; | |
923 | }; | |
924 | ||
f9f1db83 S |
925 | struct vmbus_close_msg { |
926 | struct vmbus_channel_msginfo info; | |
927 | struct vmbus_channel_close_channel msg; | |
928 | }; | |
929 | ||
b3bf60c7 S |
930 | /* Define connection identifier type. */ |
931 | union hv_connection_id { | |
932 | u32 asu32; | |
933 | struct { | |
934 | u32 id:24; | |
935 | u32 reserved:8; | |
936 | } u; | |
937 | }; | |
938 | ||
939 | /* Definition of the hv_signal_event hypercall input structure. */ | |
940 | struct hv_input_signal_event { | |
941 | union hv_connection_id connectionid; | |
942 | u16 flag_number; | |
943 | u16 rsvdz; | |
944 | }; | |
945 | ||
946 | struct hv_input_signal_event_buffer { | |
947 | u64 align8; | |
948 | struct hv_input_signal_event event; | |
949 | }; | |
950 | ||
7d7c75cd S |
951 | struct vmbus_channel { |
952 | struct list_head listentry; | |
953 | ||
954 | struct hv_device *device_obj; | |
955 | ||
956 | struct work_struct work; | |
957 | ||
958 | enum vmbus_channel_state state; | |
7d7c75cd S |
959 | |
960 | struct vmbus_channel_offer_channel offermsg; | |
961 | /* | |
962 | * These are based on the OfferMsg.MonitorId. | |
963 | * Save it here for easy access. | |
964 | */ | |
965 | u8 monitor_grp; | |
966 | u8 monitor_bit; | |
967 | ||
968 | u32 ringbuffer_gpadlhandle; | |
969 | ||
970 | /* Allocated memory for ring buffer */ | |
971 | void *ringbuffer_pages; | |
972 | u32 ringbuffer_pagecount; | |
973 | struct hv_ring_buffer_info outbound; /* send to parent */ | |
974 | struct hv_ring_buffer_info inbound; /* receive from parent */ | |
975 | spinlock_t inbound_lock; | |
976 | struct workqueue_struct *controlwq; | |
977 | ||
f9f1db83 S |
978 | struct vmbus_close_msg close_msg; |
979 | ||
7d7c75cd S |
980 | /* Channel callback are invoked in this workqueue context */ |
981 | /* HANDLE dataWorkQueue; */ | |
982 | ||
983 | void (*onchannel_callback)(void *context); | |
984 | void *channel_callback_context; | |
132368bd S |
985 | |
986 | /* | |
987 | * A channel can be marked for efficient (batched) | |
988 | * reading: | |
989 | * If batched_reading is set to "true", we read until the | |
990 | * channel is empty and hold off interrupts from the host | |
991 | * during the entire read process. | |
992 | * If batched_reading is set to "false", the client is not | |
993 | * going to perform batched reading. | |
994 | * | |
995 | * By default we will enable batched reading; specific | |
996 | * drivers that don't want this behavior can turn it off. | |
997 | */ | |
998 | ||
999 | bool batched_reading; | |
b3bf60c7 S |
1000 | |
1001 | bool is_dedicated_interrupt; | |
1002 | struct hv_input_signal_event_buffer sig_buf; | |
1003 | struct hv_input_signal_event *sig_event; | |
abbf3b2a S |
1004 | |
1005 | /* | |
1006 | * Starting with win8, this field will be used to specify | |
1007 | * the target virtual processor on which to deliver the interrupt for | |
1008 | * the host to guest communication. | |
1009 | * Prior to win8, incoming channel interrupts would only | |
1010 | * be delivered on cpu 0. Setting this value to 0 would | |
1011 | * preserve the earlier behavior. | |
1012 | */ | |
1013 | u32 target_vp; | |
e68d2971 S |
1014 | /* |
1015 | * Support for sub-channels. For high performance devices, | |
1016 | * it will be useful to have multiple sub-channels to support | |
1017 | * a scalable communication infrastructure with the host. | |
1018 | * The support for sub-channels is implemented as an extention | |
1019 | * to the current infrastructure. | |
1020 | * The initial offer is considered the primary channel and this | |
1021 | * offer message will indicate if the host supports sub-channels. | |
1022 | * The guest is free to ask for sub-channels to be offerred and can | |
1023 | * open these sub-channels as a normal "primary" channel. However, | |
1024 | * all sub-channels will have the same type and instance guids as the | |
1025 | * primary channel. Requests sent on a given channel will result in a | |
1026 | * response on the same channel. | |
1027 | */ | |
1028 | ||
1029 | /* | |
1030 | * Sub-channel creation callback. This callback will be called in | |
1031 | * process context when a sub-channel offer is received from the host. | |
1032 | * The guest can open the sub-channel in the context of this callback. | |
1033 | */ | |
1034 | void (*sc_creation_callback)(struct vmbus_channel *new_sc); | |
1035 | ||
1036 | spinlock_t sc_lock; | |
1037 | /* | |
1038 | * All Sub-channels of a primary channel are linked here. | |
1039 | */ | |
1040 | struct list_head sc_list; | |
1041 | /* | |
1042 | * The primary channel this sub-channel belongs to. | |
1043 | * This will be NULL for the primary channel. | |
1044 | */ | |
1045 | struct vmbus_channel *primary_channel; | |
7d7c75cd | 1046 | }; |
b56dda06 | 1047 | |
132368bd S |
1048 | static inline void set_channel_read_state(struct vmbus_channel *c, bool state) |
1049 | { | |
1050 | c->batched_reading = state; | |
1051 | } | |
1052 | ||
b56dda06 S |
1053 | void vmbus_onmessage(void *context); |
1054 | ||
1055 | int vmbus_request_offers(void); | |
1056 | ||
e68d2971 S |
1057 | /* |
1058 | * APIs for managing sub-channels. | |
1059 | */ | |
1060 | ||
1061 | void vmbus_set_sc_create_callback(struct vmbus_channel *primary_channel, | |
1062 | void (*sc_cr_cb)(struct vmbus_channel *new_sc)); | |
1063 | ||
1064 | /* | |
1065 | * Retrieve the (sub) channel on which to send an outgoing request. | |
1066 | * When a primary channel has multiple sub-channels, we choose a | |
1067 | * channel whose VCPU binding is closest to the VCPU on which | |
1068 | * this call is being made. | |
1069 | */ | |
1070 | struct vmbus_channel *vmbus_get_outgoing_channel(struct vmbus_channel *primary); | |
1071 | ||
1072 | /* | |
1073 | * Check if sub-channels have already been offerred. This API will be useful | |
1074 | * when the driver is unloaded after establishing sub-channels. In this case, | |
1075 | * when the driver is re-loaded, the driver would have to check if the | |
1076 | * subchannels have already been established before attempting to request | |
1077 | * the creation of sub-channels. | |
1078 | * This function returns TRUE to indicate that subchannels have already been | |
1079 | * created. | |
1080 | * This function should be invoked after setting the callback function for | |
1081 | * sub-channel creation. | |
1082 | */ | |
1083 | bool vmbus_are_subchannels_present(struct vmbus_channel *primary); | |
1084 | ||
c35470b2 S |
1085 | /* The format must be the same as struct vmdata_gpa_direct */ |
1086 | struct vmbus_channel_packet_page_buffer { | |
1087 | u16 type; | |
1088 | u16 dataoffset8; | |
1089 | u16 length8; | |
1090 | u16 flags; | |
1091 | u64 transactionid; | |
1092 | u32 reserved; | |
1093 | u32 rangecount; | |
1094 | struct hv_page_buffer range[MAX_PAGE_BUFFER_COUNT]; | |
1095 | } __packed; | |
1096 | ||
1097 | /* The format must be the same as struct vmdata_gpa_direct */ | |
1098 | struct vmbus_channel_packet_multipage_buffer { | |
1099 | u16 type; | |
1100 | u16 dataoffset8; | |
1101 | u16 length8; | |
1102 | u16 flags; | |
1103 | u64 transactionid; | |
1104 | u32 reserved; | |
1105 | u32 rangecount; /* Always 1 in this case */ | |
1106 | struct hv_multipage_buffer range; | |
1107 | } __packed; | |
1108 | ||
1109 | ||
1110 | extern int vmbus_open(struct vmbus_channel *channel, | |
1111 | u32 send_ringbuffersize, | |
1112 | u32 recv_ringbuffersize, | |
1113 | void *userdata, | |
1114 | u32 userdatalen, | |
1115 | void(*onchannel_callback)(void *context), | |
1116 | void *context); | |
1117 | ||
1118 | extern void vmbus_close(struct vmbus_channel *channel); | |
1119 | ||
1120 | extern int vmbus_sendpacket(struct vmbus_channel *channel, | |
1121 | const void *buffer, | |
1122 | u32 bufferLen, | |
1123 | u64 requestid, | |
1124 | enum vmbus_packet_type type, | |
1125 | u32 flags); | |
1126 | ||
1127 | extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, | |
1128 | struct hv_page_buffer pagebuffers[], | |
1129 | u32 pagecount, | |
1130 | void *buffer, | |
1131 | u32 bufferlen, | |
1132 | u64 requestid); | |
1133 | ||
1134 | extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, | |
1135 | struct hv_multipage_buffer *mpb, | |
1136 | void *buffer, | |
1137 | u32 bufferlen, | |
1138 | u64 requestid); | |
1139 | ||
1140 | extern int vmbus_establish_gpadl(struct vmbus_channel *channel, | |
1141 | void *kbuffer, | |
1142 | u32 size, | |
1143 | u32 *gpadl_handle); | |
1144 | ||
1145 | extern int vmbus_teardown_gpadl(struct vmbus_channel *channel, | |
1146 | u32 gpadl_handle); | |
1147 | ||
1148 | extern int vmbus_recvpacket(struct vmbus_channel *channel, | |
1149 | void *buffer, | |
1150 | u32 bufferlen, | |
1151 | u32 *buffer_actual_len, | |
1152 | u64 *requestid); | |
1153 | ||
1154 | extern int vmbus_recvpacket_raw(struct vmbus_channel *channel, | |
1155 | void *buffer, | |
1156 | u32 bufferlen, | |
1157 | u32 *buffer_actual_len, | |
1158 | u64 *requestid); | |
1159 | ||
c35470b2 | 1160 | |
c35470b2 S |
1161 | extern void vmbus_ontimer(unsigned long data); |
1162 | ||
35ea09c3 S |
1163 | /* Base driver object */ |
1164 | struct hv_driver { | |
1165 | const char *name; | |
1166 | ||
1167 | /* the device type supported by this driver */ | |
358d2ee2 | 1168 | uuid_le dev_type; |
2e2c1d17 | 1169 | const struct hv_vmbus_device_id *id_table; |
35ea09c3 S |
1170 | |
1171 | struct device_driver driver; | |
1172 | ||
84946899 | 1173 | int (*probe)(struct hv_device *, const struct hv_vmbus_device_id *); |
35ea09c3 S |
1174 | int (*remove)(struct hv_device *); |
1175 | void (*shutdown)(struct hv_device *); | |
1176 | ||
1177 | }; | |
1178 | ||
1179 | /* Base device object */ | |
1180 | struct hv_device { | |
1181 | /* the device type id of this device */ | |
358d2ee2 | 1182 | uuid_le dev_type; |
35ea09c3 S |
1183 | |
1184 | /* the device instance id of this device */ | |
358d2ee2 | 1185 | uuid_le dev_instance; |
35ea09c3 S |
1186 | |
1187 | struct device device; | |
1188 | ||
1189 | struct vmbus_channel *channel; | |
35ea09c3 S |
1190 | }; |
1191 | ||
27b5b3ca S |
1192 | |
1193 | static inline struct hv_device *device_to_hv_device(struct device *d) | |
1194 | { | |
1195 | return container_of(d, struct hv_device, device); | |
1196 | } | |
1197 | ||
1198 | static inline struct hv_driver *drv_to_hv_drv(struct device_driver *d) | |
1199 | { | |
1200 | return container_of(d, struct hv_driver, driver); | |
1201 | } | |
1202 | ||
ab101e86 S |
1203 | static inline void hv_set_drvdata(struct hv_device *dev, void *data) |
1204 | { | |
1205 | dev_set_drvdata(&dev->device, data); | |
1206 | } | |
1207 | ||
1208 | static inline void *hv_get_drvdata(struct hv_device *dev) | |
1209 | { | |
1210 | return dev_get_drvdata(&dev->device); | |
1211 | } | |
27b5b3ca S |
1212 | |
1213 | /* Vmbus interface */ | |
768fa219 GKH |
1214 | #define vmbus_driver_register(driver) \ |
1215 | __vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) | |
1216 | int __must_check __vmbus_driver_register(struct hv_driver *hv_driver, | |
1217 | struct module *owner, | |
1218 | const char *mod_name); | |
1219 | void vmbus_driver_unregister(struct hv_driver *hv_driver); | |
27b5b3ca | 1220 | |
c45cf2d4 GKH |
1221 | /** |
1222 | * VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device | |
1223 | * | |
1224 | * This macro is used to create a struct hv_vmbus_device_id that matches a | |
1225 | * specific device. | |
1226 | */ | |
1227 | #define VMBUS_DEVICE(g0, g1, g2, g3, g4, g5, g6, g7, \ | |
1228 | g8, g9, ga, gb, gc, gd, ge, gf) \ | |
1229 | .guid = { g0, g1, g2, g3, g4, g5, g6, g7, \ | |
1230 | g8, g9, ga, gb, gc, gd, ge, gf }, | |
1231 | ||
7fb96565 S |
1232 | /* |
1233 | * GUID definitions of various offer types - services offered to the guest. | |
1234 | */ | |
1235 | ||
1236 | /* | |
1237 | * Network GUID | |
1238 | * {f8615163-df3e-46c5-913f-f2d2f965ed0e} | |
1239 | */ | |
1240 | #define HV_NIC_GUID \ | |
1241 | .guid = { \ | |
1242 | 0x63, 0x51, 0x61, 0xf8, 0x3e, 0xdf, 0xc5, 0x46, \ | |
1243 | 0x91, 0x3f, 0xf2, 0xd2, 0xf9, 0x65, 0xed, 0x0e \ | |
1244 | } | |
1245 | ||
1246 | /* | |
1247 | * IDE GUID | |
1248 | * {32412632-86cb-44a2-9b5c-50d1417354f5} | |
1249 | */ | |
1250 | #define HV_IDE_GUID \ | |
1251 | .guid = { \ | |
1252 | 0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, \ | |
1253 | 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5 \ | |
1254 | } | |
1255 | ||
1256 | /* | |
1257 | * SCSI GUID | |
1258 | * {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} | |
1259 | */ | |
1260 | #define HV_SCSI_GUID \ | |
1261 | .guid = { \ | |
1262 | 0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, \ | |
1263 | 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f \ | |
1264 | } | |
1265 | ||
1266 | /* | |
1267 | * Shutdown GUID | |
1268 | * {0e0b6031-5213-4934-818b-38d90ced39db} | |
1269 | */ | |
1270 | #define HV_SHUTDOWN_GUID \ | |
1271 | .guid = { \ | |
1272 | 0x31, 0x60, 0x0b, 0x0e, 0x13, 0x52, 0x34, 0x49, \ | |
1273 | 0x81, 0x8b, 0x38, 0xd9, 0x0c, 0xed, 0x39, 0xdb \ | |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * Time Synch GUID | |
1278 | * {9527E630-D0AE-497b-ADCE-E80AB0175CAF} | |
1279 | */ | |
1280 | #define HV_TS_GUID \ | |
1281 | .guid = { \ | |
1282 | 0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49, \ | |
1283 | 0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf \ | |
1284 | } | |
1285 | ||
1286 | /* | |
1287 | * Heartbeat GUID | |
1288 | * {57164f39-9115-4e78-ab55-382f3bd5422d} | |
1289 | */ | |
1290 | #define HV_HEART_BEAT_GUID \ | |
1291 | .guid = { \ | |
1292 | 0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e, \ | |
1293 | 0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d \ | |
1294 | } | |
1295 | ||
1296 | /* | |
1297 | * KVP GUID | |
1298 | * {a9a0f4e7-5a45-4d96-b827-8a841e8c03e6} | |
1299 | */ | |
1300 | #define HV_KVP_GUID \ | |
1301 | .guid = { \ | |
1302 | 0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d, \ | |
1303 | 0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6 \ | |
1304 | } | |
1305 | ||
1306 | /* | |
1307 | * Dynamic memory GUID | |
1308 | * {525074dc-8985-46e2-8057-a307dc18a502} | |
1309 | */ | |
1310 | #define HV_DM_GUID \ | |
1311 | .guid = { \ | |
1312 | 0xdc, 0x74, 0x50, 0X52, 0x85, 0x89, 0xe2, 0x46, \ | |
1313 | 0x80, 0x57, 0xa3, 0x07, 0xdc, 0x18, 0xa5, 0x02 \ | |
1314 | } | |
1315 | ||
1316 | /* | |
1317 | * Mouse GUID | |
1318 | * {cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a} | |
1319 | */ | |
1320 | #define HV_MOUSE_GUID \ | |
1321 | .guid = { \ | |
1322 | 0x9e, 0xb6, 0xa8, 0xcf, 0x4a, 0x5b, 0xc0, 0x4c, \ | |
1323 | 0xb9, 0x8b, 0x8b, 0xa1, 0xa1, 0xf3, 0xf9, 0x5a \ | |
1324 | } | |
1325 | ||
96dd86fa S |
1326 | /* |
1327 | * VSS (Backup/Restore) GUID | |
1328 | */ | |
1329 | #define HV_VSS_GUID \ | |
1330 | .guid = { \ | |
1331 | 0x29, 0x2e, 0xfa, 0x35, 0x23, 0xea, 0x36, 0x42, \ | |
1332 | 0x96, 0xae, 0x3a, 0x6e, 0xba, 0xcb, 0xa4, 0x40 \ | |
1333 | } | |
68a2d20b HZ |
1334 | /* |
1335 | * Synthetic Video GUID | |
1336 | * {DA0A7802-E377-4aac-8E77-0558EB1073F8} | |
1337 | */ | |
1338 | #define HV_SYNTHVID_GUID \ | |
1339 | .guid = { \ | |
1340 | 0x02, 0x78, 0x0a, 0xda, 0x77, 0xe3, 0xac, 0x4a, \ | |
1341 | 0x8e, 0x77, 0x05, 0x58, 0xeb, 0x10, 0x73, 0xf8 \ | |
1342 | } | |
1343 | ||
98b80d89 S |
1344 | /* |
1345 | * Synthetic FC GUID | |
1346 | * {2f9bcc4a-0069-4af3-b76b-6fd0be528cda} | |
1347 | */ | |
1348 | #define HV_SYNTHFC_GUID \ | |
1349 | .guid = { \ | |
1350 | 0x4A, 0xCC, 0x9B, 0x2F, 0x69, 0x00, 0xF3, 0x4A, \ | |
1351 | 0xB7, 0x6B, 0x6F, 0xD0, 0xBE, 0x52, 0x8C, 0xDA \ | |
1352 | } | |
1353 | ||
b189702d S |
1354 | /* |
1355 | * Common header for Hyper-V ICs | |
1356 | */ | |
1357 | ||
1358 | #define ICMSGTYPE_NEGOTIATE 0 | |
1359 | #define ICMSGTYPE_HEARTBEAT 1 | |
1360 | #define ICMSGTYPE_KVPEXCHANGE 2 | |
1361 | #define ICMSGTYPE_SHUTDOWN 3 | |
1362 | #define ICMSGTYPE_TIMESYNC 4 | |
1363 | #define ICMSGTYPE_VSS 5 | |
1364 | ||
1365 | #define ICMSGHDRFLAG_TRANSACTION 1 | |
1366 | #define ICMSGHDRFLAG_REQUEST 2 | |
1367 | #define ICMSGHDRFLAG_RESPONSE 4 | |
1368 | ||
b189702d | 1369 | |
a29b643c S |
1370 | /* |
1371 | * While we want to handle util services as regular devices, | |
1372 | * there is only one instance of each of these services; so | |
1373 | * we statically allocate the service specific state. | |
1374 | */ | |
1375 | ||
1376 | struct hv_util_service { | |
1377 | u8 *recv_buffer; | |
1378 | void (*util_cb)(void *); | |
1379 | int (*util_init)(struct hv_util_service *); | |
1380 | void (*util_deinit)(void); | |
1381 | }; | |
1382 | ||
b189702d S |
1383 | struct vmbuspipe_hdr { |
1384 | u32 flags; | |
1385 | u32 msgsize; | |
1386 | } __packed; | |
1387 | ||
1388 | struct ic_version { | |
1389 | u16 major; | |
1390 | u16 minor; | |
1391 | } __packed; | |
1392 | ||
1393 | struct icmsg_hdr { | |
1394 | struct ic_version icverframe; | |
1395 | u16 icmsgtype; | |
1396 | struct ic_version icvermsg; | |
1397 | u16 icmsgsize; | |
1398 | u32 status; | |
1399 | u8 ictransaction_id; | |
1400 | u8 icflags; | |
1401 | u8 reserved[2]; | |
1402 | } __packed; | |
1403 | ||
1404 | struct icmsg_negotiate { | |
1405 | u16 icframe_vercnt; | |
1406 | u16 icmsg_vercnt; | |
1407 | u32 reserved; | |
1408 | struct ic_version icversion_data[1]; /* any size array */ | |
1409 | } __packed; | |
1410 | ||
1411 | struct shutdown_msg_data { | |
1412 | u32 reason_code; | |
1413 | u32 timeout_seconds; | |
1414 | u32 flags; | |
1415 | u8 display_message[2048]; | |
1416 | } __packed; | |
1417 | ||
1418 | struct heartbeat_msg_data { | |
1419 | u64 seq_num; | |
1420 | u32 reserved[8]; | |
1421 | } __packed; | |
1422 | ||
1423 | /* Time Sync IC defs */ | |
1424 | #define ICTIMESYNCFLAG_PROBE 0 | |
1425 | #define ICTIMESYNCFLAG_SYNC 1 | |
1426 | #define ICTIMESYNCFLAG_SAMPLE 2 | |
1427 | ||
1428 | #ifdef __x86_64__ | |
1429 | #define WLTIMEDELTA 116444736000000000L /* in 100ns unit */ | |
1430 | #else | |
1431 | #define WLTIMEDELTA 116444736000000000LL | |
1432 | #endif | |
1433 | ||
1434 | struct ictimesync_data { | |
1435 | u64 parenttime; | |
1436 | u64 childtime; | |
1437 | u64 roundtriptime; | |
1438 | u8 flags; | |
1439 | } __packed; | |
1440 | ||
b189702d S |
1441 | struct hyperv_service_callback { |
1442 | u8 msg_type; | |
1443 | char *log_msg; | |
358d2ee2 | 1444 | uuid_le data; |
b189702d S |
1445 | struct vmbus_channel *channel; |
1446 | void (*callback) (void *context); | |
1447 | }; | |
1448 | ||
c836d0ab | 1449 | #define MAX_SRV_VER 0x7ffffff |
6741335b | 1450 | extern bool vmbus_prep_negotiate_resp(struct icmsg_hdr *, |
c836d0ab S |
1451 | struct icmsg_negotiate *, u8 *, int, |
1452 | int); | |
b189702d | 1453 | |
2939437c S |
1454 | int hv_kvp_init(struct hv_util_service *); |
1455 | void hv_kvp_deinit(void); | |
1456 | void hv_kvp_onchannelcallback(void *); | |
1457 | ||
96dd86fa S |
1458 | int hv_vss_init(struct hv_util_service *); |
1459 | void hv_vss_deinit(void); | |
1460 | void hv_vss_onchannelcallback(void *); | |
1461 | ||
37f7278b S |
1462 | /* |
1463 | * Negotiated version with the Host. | |
1464 | */ | |
1465 | ||
1466 | extern __u32 vmbus_proto_version; | |
1467 | ||
2939437c | 1468 | #endif /* __KERNEL__ */ |
3f335ea2 | 1469 | #endif /* _HYPERV_H */ |