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1/*
2 * Thunderbolt control channel messages
3 *
4 * Copyright (C) 2014 Andreas Noever <andreas.noever@gmail.com>
5 * Copyright (C) 2017, Intel Corporation
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#ifndef _TB_MSGS
13#define _TB_MSGS
14
15#include <linux/types.h>
f67cf491 16#include <linux/uuid.h>
32af9434 17
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18enum tb_cfg_space {
19 TB_CFG_HOPS = 0,
20 TB_CFG_PORT = 1,
21 TB_CFG_SWITCH = 2,
22 TB_CFG_COUNTERS = 3,
23};
24
25enum tb_cfg_error {
26 TB_CFG_ERROR_PORT_NOT_CONNECTED = 0,
27 TB_CFG_ERROR_LINK_ERROR = 1,
28 TB_CFG_ERROR_INVALID_CONFIG_SPACE = 2,
29 TB_CFG_ERROR_NO_SUCH_PORT = 4,
30 TB_CFG_ERROR_ACK_PLUG_EVENT = 7, /* send as reply to TB_CFG_PKG_EVENT */
31 TB_CFG_ERROR_LOOP = 8,
32 TB_CFG_ERROR_HEC_ERROR_DETECTED = 12,
33 TB_CFG_ERROR_FLOW_CONTROL_ERROR = 13,
34};
35
36/* common header */
37struct tb_cfg_header {
38 u32 route_hi:22;
39 u32 unknown:10; /* highest order bit is set on replies */
40 u32 route_lo;
41} __packed;
42
43/* additional header for read/write packets */
44struct tb_cfg_address {
45 u32 offset:13; /* in dwords */
46 u32 length:6; /* in dwords */
47 u32 port:6;
48 enum tb_cfg_space space:2;
49 u32 seq:2; /* sequence number */
50 u32 zero:3;
51} __packed;
52
53/* TB_CFG_PKG_READ, response for TB_CFG_PKG_WRITE */
54struct cfg_read_pkg {
55 struct tb_cfg_header header;
56 struct tb_cfg_address addr;
57} __packed;
58
59/* TB_CFG_PKG_WRITE, response for TB_CFG_PKG_READ */
60struct cfg_write_pkg {
61 struct tb_cfg_header header;
62 struct tb_cfg_address addr;
63 u32 data[64]; /* maximum size, tb_cfg_address.length has 6 bits */
64} __packed;
65
66/* TB_CFG_PKG_ERROR */
67struct cfg_error_pkg {
68 struct tb_cfg_header header;
69 enum tb_cfg_error error:4;
70 u32 zero1:4;
71 u32 port:6;
72 u32 zero2:2; /* Both should be zero, still they are different fields. */
73 u32 zero3:16;
74} __packed;
75
76/* TB_CFG_PKG_EVENT */
77struct cfg_event_pkg {
78 struct tb_cfg_header header;
79 u32 port:6;
80 u32 zero:25;
81 bool unplug:1;
82} __packed;
83
84/* TB_CFG_PKG_RESET */
85struct cfg_reset_pkg {
86 struct tb_cfg_header header;
87} __packed;
88
89/* TB_CFG_PKG_PREPARE_TO_SLEEP */
90struct cfg_pts_pkg {
91 struct tb_cfg_header header;
92 u32 data;
93} __packed;
94
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95/* ICM messages */
96
97enum icm_pkg_code {
98 ICM_GET_TOPOLOGY = 0x1,
99 ICM_DRIVER_READY = 0x3,
100 ICM_APPROVE_DEVICE = 0x4,
101 ICM_CHALLENGE_DEVICE = 0x5,
102 ICM_ADD_DEVICE_KEY = 0x6,
103 ICM_GET_ROUTE = 0xa,
d1ff7024 104 ICM_APPROVE_XDOMAIN = 0x10,
d1d8b263 105 ICM_DISCONNECT_XDOMAIN = 0x11,
afa11ff5 106 ICM_PREBOOT_ACL = 0x18,
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107};
108
109enum icm_event_code {
110 ICM_EVENT_DEVICE_CONNECTED = 3,
111 ICM_EVENT_DEVICE_DISCONNECTED = 4,
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112 ICM_EVENT_XDOMAIN_CONNECTED = 6,
113 ICM_EVENT_XDOMAIN_DISCONNECTED = 7,
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114};
115
116struct icm_pkg_header {
117 u8 code;
118 u8 flags;
119 u8 packet_id;
120 u8 total_packets;
80671708 121};
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122
123#define ICM_FLAGS_ERROR BIT(0)
124#define ICM_FLAGS_NO_KEY BIT(1)
125#define ICM_FLAGS_SLEVEL_SHIFT 3
126#define ICM_FLAGS_SLEVEL_MASK GENMASK(4, 3)
afa11ff5 127#define ICM_FLAGS_WRITE BIT(7)
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128
129struct icm_pkg_driver_ready {
130 struct icm_pkg_header hdr;
80671708 131};
f67cf491 132
afa11ff5 133/* Falcon Ridge only messages */
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134
135struct icm_fr_pkg_driver_ready_response {
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136 struct icm_pkg_header hdr;
137 u8 romver;
138 u8 ramver;
139 u16 security_level;
80671708 140};
f67cf491 141
c1c79d65 142#define ICM_FR_SLEVEL_MASK 0xf
f67cf491 143
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144/* Falcon Ridge & Alpine Ridge common messages */
145
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146struct icm_fr_pkg_get_topology {
147 struct icm_pkg_header hdr;
80671708 148};
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149
150#define ICM_GET_TOPOLOGY_PACKETS 14
151
152struct icm_fr_pkg_get_topology_response {
153 struct icm_pkg_header hdr;
154 u32 route_lo;
155 u32 route_hi;
156 u8 first_data;
157 u8 second_data;
158 u8 drom_i2c_address_index;
159 u8 switch_index;
160 u32 reserved[2];
161 u32 ports[16];
162 u32 port_hop_info[16];
80671708 163};
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164
165#define ICM_SWITCH_USED BIT(0)
166#define ICM_SWITCH_UPSTREAM_PORT_MASK GENMASK(7, 1)
167#define ICM_SWITCH_UPSTREAM_PORT_SHIFT 1
168
169#define ICM_PORT_TYPE_MASK GENMASK(23, 0)
170#define ICM_PORT_INDEX_SHIFT 24
171#define ICM_PORT_INDEX_MASK GENMASK(31, 24)
172
173struct icm_fr_event_device_connected {
174 struct icm_pkg_header hdr;
7c39ffe7 175 uuid_t ep_uuid;
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176 u8 connection_key;
177 u8 connection_id;
178 u16 link_info;
179 u32 ep_name[55];
80671708 180};
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181
182#define ICM_LINK_INFO_LINK_MASK 0x7
183#define ICM_LINK_INFO_DEPTH_SHIFT 4
184#define ICM_LINK_INFO_DEPTH_MASK GENMASK(7, 4)
185#define ICM_LINK_INFO_APPROVED BIT(8)
38604142 186#define ICM_LINK_INFO_REJECTED BIT(9)
269f6def 187#define ICM_LINK_INFO_BOOT BIT(10)
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188
189struct icm_fr_pkg_approve_device {
190 struct icm_pkg_header hdr;
7c39ffe7 191 uuid_t ep_uuid;
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192 u8 connection_key;
193 u8 connection_id;
194 u16 reserved;
80671708 195};
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196
197struct icm_fr_event_device_disconnected {
198 struct icm_pkg_header hdr;
199 u16 reserved;
200 u16 link_info;
80671708 201};
f67cf491 202
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203struct icm_fr_event_xdomain_connected {
204 struct icm_pkg_header hdr;
205 u16 reserved;
206 u16 link_info;
207 uuid_t remote_uuid;
208 uuid_t local_uuid;
209 u32 local_route_hi;
210 u32 local_route_lo;
211 u32 remote_route_hi;
212 u32 remote_route_lo;
213};
214
215struct icm_fr_event_xdomain_disconnected {
216 struct icm_pkg_header hdr;
217 u16 reserved;
218 u16 link_info;
219 uuid_t remote_uuid;
220};
221
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222struct icm_fr_pkg_add_device_key {
223 struct icm_pkg_header hdr;
7c39ffe7 224 uuid_t ep_uuid;
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225 u8 connection_key;
226 u8 connection_id;
227 u16 reserved;
228 u32 key[8];
80671708 229};
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230
231struct icm_fr_pkg_add_device_key_response {
232 struct icm_pkg_header hdr;
7c39ffe7 233 uuid_t ep_uuid;
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234 u8 connection_key;
235 u8 connection_id;
236 u16 reserved;
80671708 237};
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238
239struct icm_fr_pkg_challenge_device {
240 struct icm_pkg_header hdr;
7c39ffe7 241 uuid_t ep_uuid;
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242 u8 connection_key;
243 u8 connection_id;
244 u16 reserved;
245 u32 challenge[8];
80671708 246};
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247
248struct icm_fr_pkg_challenge_device_response {
249 struct icm_pkg_header hdr;
7c39ffe7 250 uuid_t ep_uuid;
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251 u8 connection_key;
252 u8 connection_id;
253 u16 reserved;
254 u32 challenge[8];
255 u32 response[8];
80671708 256};
f67cf491 257
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258struct icm_fr_pkg_approve_xdomain {
259 struct icm_pkg_header hdr;
260 u16 reserved;
261 u16 link_info;
262 uuid_t remote_uuid;
263 u16 transmit_path;
264 u16 transmit_ring;
265 u16 receive_path;
266 u16 receive_ring;
267};
268
269struct icm_fr_pkg_approve_xdomain_response {
270 struct icm_pkg_header hdr;
271 u16 reserved;
272 u16 link_info;
273 uuid_t remote_uuid;
274 u16 transmit_path;
275 u16 transmit_ring;
276 u16 receive_path;
277 u16 receive_ring;
278};
279
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280/* Alpine Ridge only messages */
281
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282struct icm_ar_pkg_driver_ready_response {
283 struct icm_pkg_header hdr;
284 u8 romver;
285 u8 ramver;
286 u16 info;
287};
288
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289#define ICM_AR_FLAGS_RTD3 BIT(6)
290
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291#define ICM_AR_INFO_SLEVEL_MASK GENMASK(3, 0)
292#define ICM_AR_INFO_BOOT_ACL_SHIFT 7
293#define ICM_AR_INFO_BOOT_ACL_MASK GENMASK(11, 7)
294#define ICM_AR_INFO_BOOT_ACL_SUPPORTED BIT(13)
295
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296struct icm_ar_pkg_get_route {
297 struct icm_pkg_header hdr;
298 u16 reserved;
299 u16 link_info;
80671708 300};
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301
302struct icm_ar_pkg_get_route_response {
303 struct icm_pkg_header hdr;
304 u16 reserved;
305 u16 link_info;
306 u32 route_hi;
307 u32 route_lo;
80671708 308};
f67cf491 309
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310struct icm_ar_boot_acl_entry {
311 u32 uuid_lo;
312 u32 uuid_hi;
313};
314
315#define ICM_AR_PREBOOT_ACL_ENTRIES 16
316
317struct icm_ar_pkg_preboot_acl {
318 struct icm_pkg_header hdr;
319 struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
320};
321
322struct icm_ar_pkg_preboot_acl_response {
323 struct icm_pkg_header hdr;
324 struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
325};
326
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327/* Titan Ridge messages */
328
329struct icm_tr_pkg_driver_ready_response {
330 struct icm_pkg_header hdr;
331 u16 reserved1;
332 u16 info;
333 u32 nvm_version;
334 u16 device_id;
335 u16 reserved2;
336};
337
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338#define ICM_TR_FLAGS_RTD3 BIT(6)
339
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340#define ICM_TR_INFO_SLEVEL_MASK GENMASK(2, 0)
341#define ICM_TR_INFO_BOOT_ACL_SHIFT 7
342#define ICM_TR_INFO_BOOT_ACL_MASK GENMASK(12, 7)
343
344struct icm_tr_event_device_connected {
345 struct icm_pkg_header hdr;
346 uuid_t ep_uuid;
347 u32 route_hi;
348 u32 route_lo;
349 u8 connection_id;
350 u8 reserved;
351 u16 link_info;
352 u32 ep_name[55];
353};
354
355struct icm_tr_event_device_disconnected {
356 struct icm_pkg_header hdr;
357 u32 route_hi;
358 u32 route_lo;
359};
360
361struct icm_tr_event_xdomain_connected {
362 struct icm_pkg_header hdr;
363 u16 reserved;
364 u16 link_info;
365 uuid_t remote_uuid;
366 uuid_t local_uuid;
367 u32 local_route_hi;
368 u32 local_route_lo;
369 u32 remote_route_hi;
370 u32 remote_route_lo;
371};
372
373struct icm_tr_event_xdomain_disconnected {
374 struct icm_pkg_header hdr;
375 u32 route_hi;
376 u32 route_lo;
377 uuid_t remote_uuid;
378};
379
380struct icm_tr_pkg_approve_device {
381 struct icm_pkg_header hdr;
382 uuid_t ep_uuid;
383 u32 route_hi;
384 u32 route_lo;
385 u8 connection_id;
386 u8 reserved1[3];
387};
388
389struct icm_tr_pkg_add_device_key {
390 struct icm_pkg_header hdr;
391 uuid_t ep_uuid;
392 u32 route_hi;
393 u32 route_lo;
394 u8 connection_id;
395 u8 reserved[3];
396 u32 key[8];
397};
398
399struct icm_tr_pkg_challenge_device {
400 struct icm_pkg_header hdr;
401 uuid_t ep_uuid;
402 u32 route_hi;
403 u32 route_lo;
404 u8 connection_id;
405 u8 reserved[3];
406 u32 challenge[8];
407};
408
409struct icm_tr_pkg_approve_xdomain {
410 struct icm_pkg_header hdr;
411 u32 route_hi;
412 u32 route_lo;
413 uuid_t remote_uuid;
414 u16 transmit_path;
415 u16 transmit_ring;
416 u16 receive_path;
417 u16 receive_ring;
418};
419
420struct icm_tr_pkg_disconnect_xdomain {
421 struct icm_pkg_header hdr;
422 u8 stage;
423 u8 reserved[3];
424 u32 route_hi;
425 u32 route_lo;
426 uuid_t remote_uuid;
427};
428
429struct icm_tr_pkg_challenge_device_response {
430 struct icm_pkg_header hdr;
431 uuid_t ep_uuid;
432 u32 route_hi;
433 u32 route_lo;
434 u8 connection_id;
435 u8 reserved[3];
436 u32 challenge[8];
437 u32 response[8];
438};
439
440struct icm_tr_pkg_add_device_key_response {
441 struct icm_pkg_header hdr;
442 uuid_t ep_uuid;
443 u32 route_hi;
444 u32 route_lo;
445 u8 connection_id;
446 u8 reserved[3];
447};
448
449struct icm_tr_pkg_approve_xdomain_response {
450 struct icm_pkg_header hdr;
451 u32 route_hi;
452 u32 route_lo;
453 uuid_t remote_uuid;
454 u16 transmit_path;
455 u16 transmit_ring;
456 u16 receive_path;
457 u16 receive_ring;
458};
459
460struct icm_tr_pkg_disconnect_xdomain_response {
461 struct icm_pkg_header hdr;
462 u8 stage;
463 u8 reserved[3];
464 u32 route_hi;
465 u32 route_lo;
466 uuid_t remote_uuid;
467};
468
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469/* XDomain messages */
470
471struct tb_xdomain_header {
472 u32 route_hi;
473 u32 route_lo;
474 u32 length_sn;
475};
476
477#define TB_XDOMAIN_LENGTH_MASK GENMASK(5, 0)
478#define TB_XDOMAIN_SN_MASK GENMASK(28, 27)
479#define TB_XDOMAIN_SN_SHIFT 27
480
481enum tb_xdp_type {
482 UUID_REQUEST_OLD = 1,
483 UUID_RESPONSE = 2,
484 PROPERTIES_REQUEST,
485 PROPERTIES_RESPONSE,
486 PROPERTIES_CHANGED_REQUEST,
487 PROPERTIES_CHANGED_RESPONSE,
488 ERROR_RESPONSE,
489 UUID_REQUEST = 12,
490};
491
492struct tb_xdp_header {
493 struct tb_xdomain_header xd_hdr;
494 uuid_t uuid;
495 u32 type;
496};
497
498struct tb_xdp_properties {
499 struct tb_xdp_header hdr;
500 uuid_t src_uuid;
501 uuid_t dst_uuid;
502 u16 offset;
503 u16 reserved;
504};
505
506struct tb_xdp_properties_response {
507 struct tb_xdp_header hdr;
508 uuid_t src_uuid;
509 uuid_t dst_uuid;
510 u16 offset;
511 u16 data_length;
512 u32 generation;
513 u32 data[0];
514};
515
516/*
517 * Max length of data array single XDomain property response is allowed
518 * to carry.
519 */
520#define TB_XDP_PROPERTIES_MAX_DATA_LENGTH \
521 (((256 - 4 - sizeof(struct tb_xdp_properties_response))) / 4)
522
523/* Maximum size of the total property block in dwords we allow */
524#define TB_XDP_PROPERTIES_MAX_LENGTH 500
525
526struct tb_xdp_properties_changed {
527 struct tb_xdp_header hdr;
528 uuid_t src_uuid;
529};
530
531struct tb_xdp_properties_changed_response {
532 struct tb_xdp_header hdr;
533};
534
535enum tb_xdp_error {
536 ERROR_SUCCESS,
537 ERROR_UNKNOWN_PACKET,
538 ERROR_UNKNOWN_DOMAIN,
539 ERROR_NOT_SUPPORTED,
540 ERROR_NOT_READY,
541};
542
543struct tb_xdp_error_response {
544 struct tb_xdp_header hdr;
545 u32 error;
546};
547
32af9434 548#endif