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f67cf491 MW |
1 | /* |
2 | * Internal Thunderbolt Connection Manager. This is a firmware running on | |
3 | * the Thunderbolt host controller performing most of the low-level | |
4 | * handling. | |
5 | * | |
6 | * Copyright (C) 2017, Intel Corporation | |
7 | * Authors: Michael Jamet <michael.jamet@intel.com> | |
8 | * Mika Westerberg <mika.westerberg@linux.intel.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | ||
15 | #include <linux/delay.h> | |
f67cf491 MW |
16 | #include <linux/mutex.h> |
17 | #include <linux/pci.h> | |
630b3aff | 18 | #include <linux/platform_data/x86/apple.h> |
f67cf491 MW |
19 | #include <linux/sizes.h> |
20 | #include <linux/slab.h> | |
21 | #include <linux/workqueue.h> | |
22 | ||
23 | #include "ctl.h" | |
24 | #include "nhi_regs.h" | |
25 | #include "tb.h" | |
26 | ||
27 | #define PCIE2CIO_CMD 0x30 | |
28 | #define PCIE2CIO_CMD_TIMEOUT BIT(31) | |
29 | #define PCIE2CIO_CMD_START BIT(30) | |
30 | #define PCIE2CIO_CMD_WRITE BIT(21) | |
31 | #define PCIE2CIO_CMD_CS_MASK GENMASK(20, 19) | |
32 | #define PCIE2CIO_CMD_CS_SHIFT 19 | |
33 | #define PCIE2CIO_CMD_PORT_MASK GENMASK(18, 13) | |
34 | #define PCIE2CIO_CMD_PORT_SHIFT 13 | |
35 | ||
36 | #define PCIE2CIO_WRDATA 0x34 | |
37 | #define PCIE2CIO_RDDATA 0x38 | |
38 | ||
39 | #define PHY_PORT_CS1 0x37 | |
40 | #define PHY_PORT_CS1_LINK_DISABLE BIT(14) | |
41 | #define PHY_PORT_CS1_LINK_STATE_MASK GENMASK(29, 26) | |
42 | #define PHY_PORT_CS1_LINK_STATE_SHIFT 26 | |
43 | ||
b2b6c2eb MW |
44 | #define ICM_TIMEOUT 5000 /* ms */ |
45 | #define ICM_APPROVE_TIMEOUT 10000 /* ms */ | |
f67cf491 MW |
46 | #define ICM_MAX_LINK 4 |
47 | #define ICM_MAX_DEPTH 6 | |
48 | ||
49 | /** | |
50 | * struct icm - Internal connection manager private data | |
51 | * @request_lock: Makes sure only one message is send to ICM at time | |
52 | * @rescan_work: Work used to rescan the surviving switches after resume | |
53 | * @upstream_port: Pointer to the PCIe upstream port this host | |
54 | * controller is connected. This is only set for systems | |
55 | * where ICM needs to be started manually | |
56 | * @vnd_cap: Vendor defined capability where PCIe2CIO mailbox resides | |
57 | * (only set when @upstream_port is not %NULL) | |
e6b245cc | 58 | * @safe_mode: ICM is in safe mode |
afa11ff5 | 59 | * @max_boot_acl: Maximum number of preboot ACL entries (%0 if not supported) |
f67cf491 MW |
60 | * @is_supported: Checks if we can support ICM on this controller |
61 | * @get_mode: Read and return the ICM firmware mode (optional) | |
62 | * @get_route: Find a route string for given switch | |
c1c79d65 | 63 | * @driver_ready: Send driver ready message to ICM |
f67cf491 MW |
64 | * @device_connected: Handle device connected ICM message |
65 | * @device_disconnected: Handle device disconnected ICM message | |
d1ff7024 MW |
66 | * @xdomain_connected - Handle XDomain connected ICM message |
67 | * @xdomain_disconnected - Handle XDomain disconnected ICM message | |
f67cf491 MW |
68 | */ |
69 | struct icm { | |
70 | struct mutex request_lock; | |
71 | struct delayed_work rescan_work; | |
72 | struct pci_dev *upstream_port; | |
afa11ff5 | 73 | size_t max_boot_acl; |
f67cf491 | 74 | int vnd_cap; |
e6b245cc | 75 | bool safe_mode; |
f67cf491 MW |
76 | bool (*is_supported)(struct tb *tb); |
77 | int (*get_mode)(struct tb *tb); | |
78 | int (*get_route)(struct tb *tb, u8 link, u8 depth, u64 *route); | |
c1c79d65 | 79 | int (*driver_ready)(struct tb *tb, |
afa11ff5 MW |
80 | enum tb_security_level *security_level, |
81 | size_t *nboot_acl); | |
f67cf491 MW |
82 | void (*device_connected)(struct tb *tb, |
83 | const struct icm_pkg_header *hdr); | |
84 | void (*device_disconnected)(struct tb *tb, | |
85 | const struct icm_pkg_header *hdr); | |
d1ff7024 MW |
86 | void (*xdomain_connected)(struct tb *tb, |
87 | const struct icm_pkg_header *hdr); | |
88 | void (*xdomain_disconnected)(struct tb *tb, | |
89 | const struct icm_pkg_header *hdr); | |
f67cf491 MW |
90 | }; |
91 | ||
92 | struct icm_notification { | |
93 | struct work_struct work; | |
94 | struct icm_pkg_header *pkg; | |
95 | struct tb *tb; | |
96 | }; | |
97 | ||
98 | static inline struct tb *icm_to_tb(struct icm *icm) | |
99 | { | |
100 | return ((void *)icm - sizeof(struct tb)); | |
101 | } | |
102 | ||
103 | static inline u8 phy_port_from_route(u64 route, u8 depth) | |
104 | { | |
d1ff7024 MW |
105 | u8 link; |
106 | ||
107 | link = depth ? route >> ((depth - 1) * 8) : route; | |
108 | return tb_phy_port_from_link(link); | |
f67cf491 MW |
109 | } |
110 | ||
111 | static inline u8 dual_link_from_link(u8 link) | |
112 | { | |
113 | return link ? ((link - 1) ^ 0x01) + 1 : 0; | |
114 | } | |
115 | ||
116 | static inline u64 get_route(u32 route_hi, u32 route_lo) | |
117 | { | |
118 | return (u64)route_hi << 32 | route_lo; | |
119 | } | |
120 | ||
d1d8b263 RM |
121 | static inline u64 get_parent_route(u64 route) |
122 | { | |
123 | int depth = tb_route_length(route); | |
124 | return depth ? route & ~(0xffULL << (depth - 1) * TB_ROUTE_SHIFT) : 0; | |
125 | } | |
126 | ||
f67cf491 MW |
127 | static bool icm_match(const struct tb_cfg_request *req, |
128 | const struct ctl_pkg *pkg) | |
129 | { | |
130 | const struct icm_pkg_header *res_hdr = pkg->buffer; | |
131 | const struct icm_pkg_header *req_hdr = req->request; | |
132 | ||
133 | if (pkg->frame.eof != req->response_type) | |
134 | return false; | |
135 | if (res_hdr->code != req_hdr->code) | |
136 | return false; | |
137 | ||
138 | return true; | |
139 | } | |
140 | ||
141 | static bool icm_copy(struct tb_cfg_request *req, const struct ctl_pkg *pkg) | |
142 | { | |
143 | const struct icm_pkg_header *hdr = pkg->buffer; | |
144 | ||
145 | if (hdr->packet_id < req->npackets) { | |
146 | size_t offset = hdr->packet_id * req->response_size; | |
147 | ||
148 | memcpy(req->response + offset, pkg->buffer, req->response_size); | |
149 | } | |
150 | ||
151 | return hdr->packet_id == hdr->total_packets - 1; | |
152 | } | |
153 | ||
154 | static int icm_request(struct tb *tb, const void *request, size_t request_size, | |
155 | void *response, size_t response_size, size_t npackets, | |
156 | unsigned int timeout_msec) | |
157 | { | |
158 | struct icm *icm = tb_priv(tb); | |
159 | int retries = 3; | |
160 | ||
161 | do { | |
162 | struct tb_cfg_request *req; | |
163 | struct tb_cfg_result res; | |
164 | ||
165 | req = tb_cfg_request_alloc(); | |
166 | if (!req) | |
167 | return -ENOMEM; | |
168 | ||
169 | req->match = icm_match; | |
170 | req->copy = icm_copy; | |
171 | req->request = request; | |
172 | req->request_size = request_size; | |
173 | req->request_type = TB_CFG_PKG_ICM_CMD; | |
174 | req->response = response; | |
175 | req->npackets = npackets; | |
176 | req->response_size = response_size; | |
177 | req->response_type = TB_CFG_PKG_ICM_RESP; | |
178 | ||
179 | mutex_lock(&icm->request_lock); | |
180 | res = tb_cfg_request_sync(tb->ctl, req, timeout_msec); | |
181 | mutex_unlock(&icm->request_lock); | |
182 | ||
183 | tb_cfg_request_put(req); | |
184 | ||
185 | if (res.err != -ETIMEDOUT) | |
186 | return res.err == 1 ? -EIO : res.err; | |
187 | ||
188 | usleep_range(20, 50); | |
189 | } while (retries--); | |
190 | ||
191 | return -ETIMEDOUT; | |
192 | } | |
193 | ||
194 | static bool icm_fr_is_supported(struct tb *tb) | |
195 | { | |
630b3aff | 196 | return !x86_apple_machine; |
f67cf491 MW |
197 | } |
198 | ||
199 | static inline int icm_fr_get_switch_index(u32 port) | |
200 | { | |
201 | int index; | |
202 | ||
203 | if ((port & ICM_PORT_TYPE_MASK) != TB_TYPE_PORT) | |
204 | return 0; | |
205 | ||
206 | index = port >> ICM_PORT_INDEX_SHIFT; | |
207 | return index != 0xff ? index : 0; | |
208 | } | |
209 | ||
210 | static int icm_fr_get_route(struct tb *tb, u8 link, u8 depth, u64 *route) | |
211 | { | |
212 | struct icm_fr_pkg_get_topology_response *switches, *sw; | |
213 | struct icm_fr_pkg_get_topology request = { | |
214 | .hdr = { .code = ICM_GET_TOPOLOGY }, | |
215 | }; | |
216 | size_t npackets = ICM_GET_TOPOLOGY_PACKETS; | |
217 | int ret, index; | |
218 | u8 i; | |
219 | ||
220 | switches = kcalloc(npackets, sizeof(*switches), GFP_KERNEL); | |
221 | if (!switches) | |
222 | return -ENOMEM; | |
223 | ||
224 | ret = icm_request(tb, &request, sizeof(request), switches, | |
225 | sizeof(*switches), npackets, ICM_TIMEOUT); | |
226 | if (ret) | |
227 | goto err_free; | |
228 | ||
229 | sw = &switches[0]; | |
230 | index = icm_fr_get_switch_index(sw->ports[link]); | |
231 | if (!index) { | |
232 | ret = -ENODEV; | |
233 | goto err_free; | |
234 | } | |
235 | ||
236 | sw = &switches[index]; | |
237 | for (i = 1; i < depth; i++) { | |
238 | unsigned int j; | |
239 | ||
240 | if (!(sw->first_data & ICM_SWITCH_USED)) { | |
241 | ret = -ENODEV; | |
242 | goto err_free; | |
243 | } | |
244 | ||
245 | for (j = 0; j < ARRAY_SIZE(sw->ports); j++) { | |
246 | index = icm_fr_get_switch_index(sw->ports[j]); | |
247 | if (index > sw->switch_index) { | |
248 | sw = &switches[index]; | |
249 | break; | |
250 | } | |
251 | } | |
252 | } | |
253 | ||
254 | *route = get_route(sw->route_hi, sw->route_lo); | |
255 | ||
256 | err_free: | |
257 | kfree(switches); | |
258 | return ret; | |
259 | } | |
260 | ||
c1c79d65 | 261 | static int |
afa11ff5 MW |
262 | icm_fr_driver_ready(struct tb *tb, enum tb_security_level *security_level, |
263 | size_t *nboot_acl) | |
c1c79d65 MW |
264 | { |
265 | struct icm_fr_pkg_driver_ready_response reply; | |
266 | struct icm_pkg_driver_ready request = { | |
267 | .hdr.code = ICM_DRIVER_READY, | |
268 | }; | |
269 | int ret; | |
270 | ||
271 | memset(&reply, 0, sizeof(reply)); | |
272 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
273 | 1, ICM_TIMEOUT); | |
274 | if (ret) | |
275 | return ret; | |
276 | ||
277 | if (security_level) | |
278 | *security_level = reply.security_level & ICM_FR_SLEVEL_MASK; | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
f67cf491 MW |
283 | static int icm_fr_approve_switch(struct tb *tb, struct tb_switch *sw) |
284 | { | |
285 | struct icm_fr_pkg_approve_device request; | |
286 | struct icm_fr_pkg_approve_device reply; | |
287 | int ret; | |
288 | ||
289 | memset(&request, 0, sizeof(request)); | |
290 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
291 | request.hdr.code = ICM_APPROVE_DEVICE; | |
292 | request.connection_id = sw->connection_id; | |
293 | request.connection_key = sw->connection_key; | |
294 | ||
295 | memset(&reply, 0, sizeof(reply)); | |
296 | /* Use larger timeout as establishing tunnels can take some time */ | |
297 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
b2b6c2eb | 298 | 1, ICM_APPROVE_TIMEOUT); |
f67cf491 MW |
299 | if (ret) |
300 | return ret; | |
301 | ||
302 | if (reply.hdr.flags & ICM_FLAGS_ERROR) { | |
303 | tb_warn(tb, "PCIe tunnel creation failed\n"); | |
304 | return -EIO; | |
305 | } | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
310 | static int icm_fr_add_switch_key(struct tb *tb, struct tb_switch *sw) | |
311 | { | |
312 | struct icm_fr_pkg_add_device_key request; | |
313 | struct icm_fr_pkg_add_device_key_response reply; | |
314 | int ret; | |
315 | ||
316 | memset(&request, 0, sizeof(request)); | |
317 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
318 | request.hdr.code = ICM_ADD_DEVICE_KEY; | |
319 | request.connection_id = sw->connection_id; | |
320 | request.connection_key = sw->connection_key; | |
321 | memcpy(request.key, sw->key, TB_SWITCH_KEY_SIZE); | |
322 | ||
323 | memset(&reply, 0, sizeof(reply)); | |
324 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
325 | 1, ICM_TIMEOUT); | |
326 | if (ret) | |
327 | return ret; | |
328 | ||
329 | if (reply.hdr.flags & ICM_FLAGS_ERROR) { | |
330 | tb_warn(tb, "Adding key to switch failed\n"); | |
331 | return -EIO; | |
332 | } | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | static int icm_fr_challenge_switch_key(struct tb *tb, struct tb_switch *sw, | |
338 | const u8 *challenge, u8 *response) | |
339 | { | |
340 | struct icm_fr_pkg_challenge_device request; | |
341 | struct icm_fr_pkg_challenge_device_response reply; | |
342 | int ret; | |
343 | ||
344 | memset(&request, 0, sizeof(request)); | |
345 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
346 | request.hdr.code = ICM_CHALLENGE_DEVICE; | |
347 | request.connection_id = sw->connection_id; | |
348 | request.connection_key = sw->connection_key; | |
349 | memcpy(request.challenge, challenge, TB_SWITCH_KEY_SIZE); | |
350 | ||
351 | memset(&reply, 0, sizeof(reply)); | |
352 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
353 | 1, ICM_TIMEOUT); | |
354 | if (ret) | |
355 | return ret; | |
356 | ||
357 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
358 | return -EKEYREJECTED; | |
359 | if (reply.hdr.flags & ICM_FLAGS_NO_KEY) | |
360 | return -ENOKEY; | |
361 | ||
362 | memcpy(response, reply.response, TB_SWITCH_KEY_SIZE); | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
d1ff7024 MW |
367 | static int icm_fr_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd) |
368 | { | |
369 | struct icm_fr_pkg_approve_xdomain_response reply; | |
370 | struct icm_fr_pkg_approve_xdomain request; | |
371 | int ret; | |
372 | ||
373 | memset(&request, 0, sizeof(request)); | |
374 | request.hdr.code = ICM_APPROVE_XDOMAIN; | |
375 | request.link_info = xd->depth << ICM_LINK_INFO_DEPTH_SHIFT | xd->link; | |
376 | memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid)); | |
377 | ||
378 | request.transmit_path = xd->transmit_path; | |
379 | request.transmit_ring = xd->transmit_ring; | |
380 | request.receive_path = xd->receive_path; | |
381 | request.receive_ring = xd->receive_ring; | |
382 | ||
383 | memset(&reply, 0, sizeof(reply)); | |
384 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
385 | 1, ICM_TIMEOUT); | |
386 | if (ret) | |
387 | return ret; | |
388 | ||
389 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
390 | return -EIO; | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | static int icm_fr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd) | |
396 | { | |
397 | u8 phy_port; | |
398 | u8 cmd; | |
399 | ||
400 | phy_port = tb_phy_port_from_link(xd->link); | |
401 | if (phy_port == 0) | |
402 | cmd = NHI_MAILBOX_DISCONNECT_PA; | |
403 | else | |
404 | cmd = NHI_MAILBOX_DISCONNECT_PB; | |
405 | ||
406 | nhi_mailbox_cmd(tb->nhi, cmd, 1); | |
407 | usleep_range(10, 50); | |
408 | nhi_mailbox_cmd(tb->nhi, cmd, 2); | |
409 | return 0; | |
410 | } | |
411 | ||
210f2eb5 MW |
412 | static void add_switch(struct tb_switch *parent_sw, u64 route, |
413 | const uuid_t *uuid, u8 connection_id, u8 connection_key, | |
414 | u8 link, u8 depth, enum tb_security_level security_level, | |
269f6def | 415 | bool authorized, bool boot) |
210f2eb5 MW |
416 | { |
417 | struct tb_switch *sw; | |
418 | ||
419 | sw = tb_switch_alloc(parent_sw->tb, &parent_sw->dev, route); | |
420 | if (!sw) | |
421 | return; | |
422 | ||
423 | sw->uuid = kmemdup(uuid, sizeof(*uuid), GFP_KERNEL); | |
424 | sw->connection_id = connection_id; | |
425 | sw->connection_key = connection_key; | |
426 | sw->link = link; | |
427 | sw->depth = depth; | |
428 | sw->authorized = authorized; | |
429 | sw->security_level = security_level; | |
269f6def | 430 | sw->boot = boot; |
210f2eb5 MW |
431 | |
432 | /* Link the two switches now */ | |
433 | tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw); | |
434 | tb_upstream_port(sw)->remote = tb_port_at(route, parent_sw); | |
435 | ||
436 | if (tb_switch_add(sw)) { | |
437 | tb_port_at(tb_route(sw), parent_sw)->remote = NULL; | |
438 | tb_switch_put(sw); | |
439 | return; | |
440 | } | |
441 | } | |
442 | ||
443 | static void update_switch(struct tb_switch *parent_sw, struct tb_switch *sw, | |
444 | u64 route, u8 connection_id, u8 connection_key, | |
269f6def | 445 | u8 link, u8 depth, bool boot) |
210f2eb5 MW |
446 | { |
447 | /* Disconnect from parent */ | |
448 | tb_port_at(tb_route(sw), parent_sw)->remote = NULL; | |
449 | /* Re-connect via updated port*/ | |
450 | tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw); | |
451 | ||
452 | /* Update with the new addressing information */ | |
453 | sw->config.route_hi = upper_32_bits(route); | |
454 | sw->config.route_lo = lower_32_bits(route); | |
455 | sw->connection_id = connection_id; | |
456 | sw->connection_key = connection_key; | |
457 | sw->link = link; | |
458 | sw->depth = depth; | |
269f6def | 459 | sw->boot = boot; |
210f2eb5 MW |
460 | |
461 | /* This switch still exists */ | |
462 | sw->is_unplugged = false; | |
463 | } | |
464 | ||
f67cf491 MW |
465 | static void remove_switch(struct tb_switch *sw) |
466 | { | |
467 | struct tb_switch *parent_sw; | |
468 | ||
469 | parent_sw = tb_to_switch(sw->dev.parent); | |
470 | tb_port_at(tb_route(sw), parent_sw)->remote = NULL; | |
471 | tb_switch_remove(sw); | |
472 | } | |
473 | ||
210f2eb5 MW |
474 | static void add_xdomain(struct tb_switch *sw, u64 route, |
475 | const uuid_t *local_uuid, const uuid_t *remote_uuid, | |
476 | u8 link, u8 depth) | |
477 | { | |
478 | struct tb_xdomain *xd; | |
479 | ||
480 | xd = tb_xdomain_alloc(sw->tb, &sw->dev, route, local_uuid, remote_uuid); | |
481 | if (!xd) | |
482 | return; | |
483 | ||
484 | xd->link = link; | |
485 | xd->depth = depth; | |
486 | ||
487 | tb_port_at(route, sw)->xdomain = xd; | |
488 | ||
489 | tb_xdomain_add(xd); | |
490 | } | |
491 | ||
492 | static void update_xdomain(struct tb_xdomain *xd, u64 route, u8 link) | |
493 | { | |
494 | xd->link = link; | |
495 | xd->route = route; | |
496 | xd->is_unplugged = false; | |
497 | } | |
498 | ||
9f3125ba MW |
499 | static void remove_xdomain(struct tb_xdomain *xd) |
500 | { | |
501 | struct tb_switch *sw; | |
502 | ||
503 | sw = tb_to_switch(xd->dev.parent); | |
504 | tb_port_at(xd->route, sw)->xdomain = NULL; | |
505 | tb_xdomain_remove(xd); | |
506 | } | |
507 | ||
f67cf491 MW |
508 | static void |
509 | icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
510 | { | |
511 | const struct icm_fr_event_device_connected *pkg = | |
512 | (const struct icm_fr_event_device_connected *)hdr; | |
210f2eb5 | 513 | enum tb_security_level security_level; |
f67cf491 MW |
514 | struct tb_switch *sw, *parent_sw; |
515 | struct icm *icm = tb_priv(tb); | |
516 | bool authorized = false; | |
9f3125ba | 517 | struct tb_xdomain *xd; |
f67cf491 | 518 | u8 link, depth; |
269f6def | 519 | bool boot; |
f67cf491 MW |
520 | u64 route; |
521 | int ret; | |
522 | ||
523 | link = pkg->link_info & ICM_LINK_INFO_LINK_MASK; | |
524 | depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >> | |
525 | ICM_LINK_INFO_DEPTH_SHIFT; | |
526 | authorized = pkg->link_info & ICM_LINK_INFO_APPROVED; | |
210f2eb5 MW |
527 | security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >> |
528 | ICM_FLAGS_SLEVEL_SHIFT; | |
269f6def | 529 | boot = pkg->link_info & ICM_LINK_INFO_BOOT; |
f67cf491 | 530 | |
38604142 MW |
531 | if (pkg->link_info & ICM_LINK_INFO_REJECTED) { |
532 | tb_info(tb, "switch at %u.%u was rejected by ICM firmware because topology limit exceeded\n", | |
533 | link, depth); | |
534 | return; | |
535 | } | |
536 | ||
f67cf491 MW |
537 | ret = icm->get_route(tb, link, depth, &route); |
538 | if (ret) { | |
539 | tb_err(tb, "failed to find route string for switch at %u.%u\n", | |
540 | link, depth); | |
541 | return; | |
542 | } | |
543 | ||
544 | sw = tb_switch_find_by_uuid(tb, &pkg->ep_uuid); | |
545 | if (sw) { | |
546 | u8 phy_port, sw_phy_port; | |
547 | ||
548 | parent_sw = tb_to_switch(sw->dev.parent); | |
549 | sw_phy_port = phy_port_from_route(tb_route(sw), sw->depth); | |
550 | phy_port = phy_port_from_route(route, depth); | |
551 | ||
552 | /* | |
553 | * On resume ICM will send us connected events for the | |
554 | * devices that still are present. However, that | |
555 | * information might have changed for example by the | |
556 | * fact that a switch on a dual-link connection might | |
557 | * have been enumerated using the other link now. Make | |
558 | * sure our book keeping matches that. | |
559 | */ | |
560 | if (sw->depth == depth && sw_phy_port == phy_port && | |
561 | !!sw->authorized == authorized) { | |
210f2eb5 | 562 | update_switch(parent_sw, sw, route, pkg->connection_id, |
269f6def | 563 | pkg->connection_key, link, depth, boot); |
f67cf491 MW |
564 | tb_switch_put(sw); |
565 | return; | |
566 | } | |
567 | ||
568 | /* | |
569 | * User connected the same switch to another physical | |
570 | * port or to another part of the topology. Remove the | |
571 | * existing switch now before adding the new one. | |
572 | */ | |
573 | remove_switch(sw); | |
574 | tb_switch_put(sw); | |
575 | } | |
576 | ||
577 | /* | |
578 | * If the switch was not found by UUID, look for a switch on | |
579 | * same physical port (taking possible link aggregation into | |
580 | * account) and depth. If we found one it is definitely a stale | |
581 | * one so remove it first. | |
582 | */ | |
583 | sw = tb_switch_find_by_link_depth(tb, link, depth); | |
584 | if (!sw) { | |
585 | u8 dual_link; | |
586 | ||
587 | dual_link = dual_link_from_link(link); | |
588 | if (dual_link) | |
589 | sw = tb_switch_find_by_link_depth(tb, dual_link, depth); | |
590 | } | |
591 | if (sw) { | |
592 | remove_switch(sw); | |
593 | tb_switch_put(sw); | |
594 | } | |
595 | ||
9f3125ba MW |
596 | /* Remove existing XDomain connection if found */ |
597 | xd = tb_xdomain_find_by_link_depth(tb, link, depth); | |
598 | if (xd) { | |
599 | remove_xdomain(xd); | |
600 | tb_xdomain_put(xd); | |
601 | } | |
602 | ||
f67cf491 MW |
603 | parent_sw = tb_switch_find_by_link_depth(tb, link, depth - 1); |
604 | if (!parent_sw) { | |
605 | tb_err(tb, "failed to find parent switch for %u.%u\n", | |
606 | link, depth); | |
607 | return; | |
608 | } | |
609 | ||
210f2eb5 MW |
610 | add_switch(parent_sw, route, &pkg->ep_uuid, pkg->connection_id, |
611 | pkg->connection_key, link, depth, security_level, | |
269f6def | 612 | authorized, boot); |
f67cf491 | 613 | |
f67cf491 MW |
614 | tb_switch_put(parent_sw); |
615 | } | |
616 | ||
617 | static void | |
618 | icm_fr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr) | |
619 | { | |
620 | const struct icm_fr_event_device_disconnected *pkg = | |
621 | (const struct icm_fr_event_device_disconnected *)hdr; | |
622 | struct tb_switch *sw; | |
623 | u8 link, depth; | |
624 | ||
625 | link = pkg->link_info & ICM_LINK_INFO_LINK_MASK; | |
626 | depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >> | |
627 | ICM_LINK_INFO_DEPTH_SHIFT; | |
628 | ||
629 | if (link > ICM_MAX_LINK || depth > ICM_MAX_DEPTH) { | |
630 | tb_warn(tb, "invalid topology %u.%u, ignoring\n", link, depth); | |
631 | return; | |
632 | } | |
633 | ||
634 | sw = tb_switch_find_by_link_depth(tb, link, depth); | |
635 | if (!sw) { | |
636 | tb_warn(tb, "no switch exists at %u.%u, ignoring\n", link, | |
637 | depth); | |
638 | return; | |
639 | } | |
640 | ||
641 | remove_switch(sw); | |
642 | tb_switch_put(sw); | |
643 | } | |
644 | ||
d1ff7024 MW |
645 | static void |
646 | icm_fr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
647 | { | |
648 | const struct icm_fr_event_xdomain_connected *pkg = | |
649 | (const struct icm_fr_event_xdomain_connected *)hdr; | |
650 | struct tb_xdomain *xd; | |
651 | struct tb_switch *sw; | |
652 | u8 link, depth; | |
653 | bool approved; | |
654 | u64 route; | |
655 | ||
656 | /* | |
657 | * After NVM upgrade adding root switch device fails because we | |
658 | * initiated reset. During that time ICM might still send | |
659 | * XDomain connected message which we ignore here. | |
660 | */ | |
661 | if (!tb->root_switch) | |
662 | return; | |
663 | ||
664 | link = pkg->link_info & ICM_LINK_INFO_LINK_MASK; | |
665 | depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >> | |
666 | ICM_LINK_INFO_DEPTH_SHIFT; | |
667 | approved = pkg->link_info & ICM_LINK_INFO_APPROVED; | |
668 | ||
669 | if (link > ICM_MAX_LINK || depth > ICM_MAX_DEPTH) { | |
670 | tb_warn(tb, "invalid topology %u.%u, ignoring\n", link, depth); | |
671 | return; | |
672 | } | |
673 | ||
674 | route = get_route(pkg->local_route_hi, pkg->local_route_lo); | |
675 | ||
676 | xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid); | |
677 | if (xd) { | |
678 | u8 xd_phy_port, phy_port; | |
679 | ||
680 | xd_phy_port = phy_port_from_route(xd->route, xd->depth); | |
681 | phy_port = phy_port_from_route(route, depth); | |
682 | ||
683 | if (xd->depth == depth && xd_phy_port == phy_port) { | |
210f2eb5 | 684 | update_xdomain(xd, route, link); |
d1ff7024 MW |
685 | tb_xdomain_put(xd); |
686 | return; | |
687 | } | |
688 | ||
689 | /* | |
690 | * If we find an existing XDomain connection remove it | |
691 | * now. We need to go through login handshake and | |
692 | * everything anyway to be able to re-establish the | |
693 | * connection. | |
694 | */ | |
695 | remove_xdomain(xd); | |
696 | tb_xdomain_put(xd); | |
697 | } | |
698 | ||
699 | /* | |
700 | * Look if there already exists an XDomain in the same place | |
701 | * than the new one and in that case remove it because it is | |
702 | * most likely another host that got disconnected. | |
703 | */ | |
704 | xd = tb_xdomain_find_by_link_depth(tb, link, depth); | |
705 | if (!xd) { | |
706 | u8 dual_link; | |
707 | ||
708 | dual_link = dual_link_from_link(link); | |
709 | if (dual_link) | |
710 | xd = tb_xdomain_find_by_link_depth(tb, dual_link, | |
711 | depth); | |
712 | } | |
713 | if (xd) { | |
714 | remove_xdomain(xd); | |
715 | tb_xdomain_put(xd); | |
716 | } | |
717 | ||
718 | /* | |
719 | * If the user disconnected a switch during suspend and | |
720 | * connected another host to the same port, remove the switch | |
721 | * first. | |
722 | */ | |
723 | sw = get_switch_at_route(tb->root_switch, route); | |
724 | if (sw) | |
725 | remove_switch(sw); | |
726 | ||
727 | sw = tb_switch_find_by_link_depth(tb, link, depth); | |
728 | if (!sw) { | |
729 | tb_warn(tb, "no switch exists at %u.%u, ignoring\n", link, | |
730 | depth); | |
731 | return; | |
732 | } | |
733 | ||
210f2eb5 MW |
734 | add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, link, |
735 | depth); | |
d1ff7024 MW |
736 | tb_switch_put(sw); |
737 | } | |
738 | ||
739 | static void | |
740 | icm_fr_xdomain_disconnected(struct tb *tb, const struct icm_pkg_header *hdr) | |
741 | { | |
742 | const struct icm_fr_event_xdomain_disconnected *pkg = | |
743 | (const struct icm_fr_event_xdomain_disconnected *)hdr; | |
744 | struct tb_xdomain *xd; | |
745 | ||
746 | /* | |
747 | * If the connection is through one or multiple devices, the | |
748 | * XDomain device is removed along with them so it is fine if we | |
749 | * cannot find it here. | |
750 | */ | |
751 | xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid); | |
752 | if (xd) { | |
753 | remove_xdomain(xd); | |
754 | tb_xdomain_put(xd); | |
755 | } | |
756 | } | |
757 | ||
d1d8b263 RM |
758 | static int |
759 | icm_tr_driver_ready(struct tb *tb, enum tb_security_level *security_level, | |
760 | size_t *nboot_acl) | |
761 | { | |
762 | struct icm_tr_pkg_driver_ready_response reply; | |
763 | struct icm_pkg_driver_ready request = { | |
764 | .hdr.code = ICM_DRIVER_READY, | |
765 | }; | |
766 | int ret; | |
767 | ||
768 | memset(&reply, 0, sizeof(reply)); | |
769 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
770 | 1, 20000); | |
771 | if (ret) | |
772 | return ret; | |
773 | ||
774 | if (security_level) | |
775 | *security_level = reply.info & ICM_TR_INFO_SLEVEL_MASK; | |
776 | if (nboot_acl) | |
777 | *nboot_acl = (reply.info & ICM_TR_INFO_BOOT_ACL_MASK) >> | |
778 | ICM_TR_INFO_BOOT_ACL_SHIFT; | |
779 | return 0; | |
780 | } | |
781 | ||
782 | static int icm_tr_approve_switch(struct tb *tb, struct tb_switch *sw) | |
783 | { | |
784 | struct icm_tr_pkg_approve_device request; | |
785 | struct icm_tr_pkg_approve_device reply; | |
786 | int ret; | |
787 | ||
788 | memset(&request, 0, sizeof(request)); | |
789 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
790 | request.hdr.code = ICM_APPROVE_DEVICE; | |
791 | request.route_lo = sw->config.route_lo; | |
792 | request.route_hi = sw->config.route_hi; | |
793 | request.connection_id = sw->connection_id; | |
794 | ||
795 | memset(&reply, 0, sizeof(reply)); | |
796 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
797 | 1, ICM_APPROVE_TIMEOUT); | |
798 | if (ret) | |
799 | return ret; | |
800 | ||
801 | if (reply.hdr.flags & ICM_FLAGS_ERROR) { | |
802 | tb_warn(tb, "PCIe tunnel creation failed\n"); | |
803 | return -EIO; | |
804 | } | |
805 | ||
806 | return 0; | |
807 | } | |
808 | ||
809 | static int icm_tr_add_switch_key(struct tb *tb, struct tb_switch *sw) | |
810 | { | |
811 | struct icm_tr_pkg_add_device_key_response reply; | |
812 | struct icm_tr_pkg_add_device_key request; | |
813 | int ret; | |
814 | ||
815 | memset(&request, 0, sizeof(request)); | |
816 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
817 | request.hdr.code = ICM_ADD_DEVICE_KEY; | |
818 | request.route_lo = sw->config.route_lo; | |
819 | request.route_hi = sw->config.route_hi; | |
820 | request.connection_id = sw->connection_id; | |
821 | memcpy(request.key, sw->key, TB_SWITCH_KEY_SIZE); | |
822 | ||
823 | memset(&reply, 0, sizeof(reply)); | |
824 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
825 | 1, ICM_TIMEOUT); | |
826 | if (ret) | |
827 | return ret; | |
828 | ||
829 | if (reply.hdr.flags & ICM_FLAGS_ERROR) { | |
830 | tb_warn(tb, "Adding key to switch failed\n"); | |
831 | return -EIO; | |
832 | } | |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
837 | static int icm_tr_challenge_switch_key(struct tb *tb, struct tb_switch *sw, | |
838 | const u8 *challenge, u8 *response) | |
839 | { | |
840 | struct icm_tr_pkg_challenge_device_response reply; | |
841 | struct icm_tr_pkg_challenge_device request; | |
842 | int ret; | |
843 | ||
844 | memset(&request, 0, sizeof(request)); | |
845 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
846 | request.hdr.code = ICM_CHALLENGE_DEVICE; | |
847 | request.route_lo = sw->config.route_lo; | |
848 | request.route_hi = sw->config.route_hi; | |
849 | request.connection_id = sw->connection_id; | |
850 | memcpy(request.challenge, challenge, TB_SWITCH_KEY_SIZE); | |
851 | ||
852 | memset(&reply, 0, sizeof(reply)); | |
853 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
854 | 1, ICM_TIMEOUT); | |
855 | if (ret) | |
856 | return ret; | |
857 | ||
858 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
859 | return -EKEYREJECTED; | |
860 | if (reply.hdr.flags & ICM_FLAGS_NO_KEY) | |
861 | return -ENOKEY; | |
862 | ||
863 | memcpy(response, reply.response, TB_SWITCH_KEY_SIZE); | |
864 | ||
865 | return 0; | |
866 | } | |
867 | ||
868 | static int icm_tr_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd) | |
869 | { | |
870 | struct icm_tr_pkg_approve_xdomain_response reply; | |
871 | struct icm_tr_pkg_approve_xdomain request; | |
872 | int ret; | |
873 | ||
874 | memset(&request, 0, sizeof(request)); | |
875 | request.hdr.code = ICM_APPROVE_XDOMAIN; | |
876 | request.route_hi = upper_32_bits(xd->route); | |
877 | request.route_lo = lower_32_bits(xd->route); | |
878 | request.transmit_path = xd->transmit_path; | |
879 | request.transmit_ring = xd->transmit_ring; | |
880 | request.receive_path = xd->receive_path; | |
881 | request.receive_ring = xd->receive_ring; | |
882 | memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid)); | |
883 | ||
884 | memset(&reply, 0, sizeof(reply)); | |
885 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
886 | 1, ICM_TIMEOUT); | |
887 | if (ret) | |
888 | return ret; | |
889 | ||
890 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
891 | return -EIO; | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | static int icm_tr_xdomain_tear_down(struct tb *tb, struct tb_xdomain *xd, | |
897 | int stage) | |
898 | { | |
899 | struct icm_tr_pkg_disconnect_xdomain_response reply; | |
900 | struct icm_tr_pkg_disconnect_xdomain request; | |
901 | int ret; | |
902 | ||
903 | memset(&request, 0, sizeof(request)); | |
904 | request.hdr.code = ICM_DISCONNECT_XDOMAIN; | |
905 | request.stage = stage; | |
906 | request.route_hi = upper_32_bits(xd->route); | |
907 | request.route_lo = lower_32_bits(xd->route); | |
908 | memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid)); | |
909 | ||
910 | memset(&reply, 0, sizeof(reply)); | |
911 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
912 | 1, ICM_TIMEOUT); | |
913 | if (ret) | |
914 | return ret; | |
915 | ||
916 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
917 | return -EIO; | |
918 | ||
919 | return 0; | |
920 | } | |
921 | ||
922 | static int icm_tr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd) | |
923 | { | |
924 | int ret; | |
925 | ||
926 | ret = icm_tr_xdomain_tear_down(tb, xd, 1); | |
927 | if (ret) | |
928 | return ret; | |
929 | ||
930 | usleep_range(10, 50); | |
931 | return icm_tr_xdomain_tear_down(tb, xd, 2); | |
932 | } | |
933 | ||
934 | static void | |
935 | icm_tr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
936 | { | |
937 | const struct icm_tr_event_device_connected *pkg = | |
938 | (const struct icm_tr_event_device_connected *)hdr; | |
939 | enum tb_security_level security_level; | |
940 | struct tb_switch *sw, *parent_sw; | |
941 | struct tb_xdomain *xd; | |
942 | bool authorized, boot; | |
943 | u64 route; | |
944 | ||
945 | /* | |
946 | * Currently we don't use the QoS information coming with the | |
947 | * device connected message so simply just ignore that extra | |
948 | * packet for now. | |
949 | */ | |
950 | if (pkg->hdr.packet_id) | |
951 | return; | |
952 | ||
953 | /* | |
954 | * After NVM upgrade adding root switch device fails because we | |
955 | * initiated reset. During that time ICM might still send device | |
956 | * connected message which we ignore here. | |
957 | */ | |
958 | if (!tb->root_switch) | |
959 | return; | |
960 | ||
961 | route = get_route(pkg->route_hi, pkg->route_lo); | |
962 | authorized = pkg->link_info & ICM_LINK_INFO_APPROVED; | |
963 | security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >> | |
964 | ICM_FLAGS_SLEVEL_SHIFT; | |
965 | boot = pkg->link_info & ICM_LINK_INFO_BOOT; | |
966 | ||
967 | if (pkg->link_info & ICM_LINK_INFO_REJECTED) { | |
968 | tb_info(tb, "switch at %llx was rejected by ICM firmware because topology limit exceeded\n", | |
969 | route); | |
970 | return; | |
971 | } | |
972 | ||
973 | sw = tb_switch_find_by_uuid(tb, &pkg->ep_uuid); | |
974 | if (sw) { | |
975 | /* Update the switch if it is still in the same place */ | |
976 | if (tb_route(sw) == route && !!sw->authorized == authorized) { | |
977 | parent_sw = tb_to_switch(sw->dev.parent); | |
978 | update_switch(parent_sw, sw, route, pkg->connection_id, | |
979 | 0, 0, 0, boot); | |
980 | tb_switch_put(sw); | |
981 | return; | |
982 | } | |
983 | ||
984 | remove_switch(sw); | |
985 | tb_switch_put(sw); | |
986 | } | |
987 | ||
988 | /* Another switch with the same address */ | |
989 | sw = tb_switch_find_by_route(tb, route); | |
990 | if (sw) { | |
991 | remove_switch(sw); | |
992 | tb_switch_put(sw); | |
993 | } | |
994 | ||
995 | /* XDomain connection with the same address */ | |
996 | xd = tb_xdomain_find_by_route(tb, route); | |
997 | if (xd) { | |
998 | remove_xdomain(xd); | |
999 | tb_xdomain_put(xd); | |
1000 | } | |
1001 | ||
1002 | parent_sw = tb_switch_find_by_route(tb, get_parent_route(route)); | |
1003 | if (!parent_sw) { | |
1004 | tb_err(tb, "failed to find parent switch for %llx\n", route); | |
1005 | return; | |
1006 | } | |
1007 | ||
1008 | add_switch(parent_sw, route, &pkg->ep_uuid, pkg->connection_id, | |
1009 | 0, 0, 0, security_level, authorized, boot); | |
1010 | ||
1011 | tb_switch_put(parent_sw); | |
1012 | } | |
1013 | ||
1014 | static void | |
1015 | icm_tr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr) | |
1016 | { | |
1017 | const struct icm_tr_event_device_disconnected *pkg = | |
1018 | (const struct icm_tr_event_device_disconnected *)hdr; | |
1019 | struct tb_switch *sw; | |
1020 | u64 route; | |
1021 | ||
1022 | route = get_route(pkg->route_hi, pkg->route_lo); | |
1023 | ||
1024 | sw = tb_switch_find_by_route(tb, route); | |
1025 | if (!sw) { | |
1026 | tb_warn(tb, "no switch exists at %llx, ignoring\n", route); | |
1027 | return; | |
1028 | } | |
1029 | ||
1030 | remove_switch(sw); | |
1031 | tb_switch_put(sw); | |
1032 | } | |
1033 | ||
1034 | static void | |
1035 | icm_tr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
1036 | { | |
1037 | const struct icm_tr_event_xdomain_connected *pkg = | |
1038 | (const struct icm_tr_event_xdomain_connected *)hdr; | |
1039 | struct tb_xdomain *xd; | |
1040 | struct tb_switch *sw; | |
1041 | u64 route; | |
1042 | ||
1043 | if (!tb->root_switch) | |
1044 | return; | |
1045 | ||
1046 | route = get_route(pkg->local_route_hi, pkg->local_route_lo); | |
1047 | ||
1048 | xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid); | |
1049 | if (xd) { | |
1050 | if (xd->route == route) { | |
1051 | update_xdomain(xd, route, 0); | |
1052 | tb_xdomain_put(xd); | |
1053 | return; | |
1054 | } | |
1055 | ||
1056 | remove_xdomain(xd); | |
1057 | tb_xdomain_put(xd); | |
1058 | } | |
1059 | ||
1060 | /* An existing xdomain with the same address */ | |
1061 | xd = tb_xdomain_find_by_route(tb, route); | |
1062 | if (xd) { | |
1063 | remove_xdomain(xd); | |
1064 | tb_xdomain_put(xd); | |
1065 | } | |
1066 | ||
1067 | /* | |
1068 | * If the user disconnected a switch during suspend and | |
1069 | * connected another host to the same port, remove the switch | |
1070 | * first. | |
1071 | */ | |
1072 | sw = get_switch_at_route(tb->root_switch, route); | |
1073 | if (sw) | |
1074 | remove_switch(sw); | |
1075 | ||
1076 | sw = tb_switch_find_by_route(tb, get_parent_route(route)); | |
1077 | if (!sw) { | |
1078 | tb_warn(tb, "no switch exists at %llx, ignoring\n", route); | |
1079 | return; | |
1080 | } | |
1081 | ||
1082 | add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, 0, 0); | |
1083 | tb_switch_put(sw); | |
1084 | } | |
1085 | ||
1086 | static void | |
1087 | icm_tr_xdomain_disconnected(struct tb *tb, const struct icm_pkg_header *hdr) | |
1088 | { | |
1089 | const struct icm_tr_event_xdomain_disconnected *pkg = | |
1090 | (const struct icm_tr_event_xdomain_disconnected *)hdr; | |
1091 | struct tb_xdomain *xd; | |
1092 | u64 route; | |
1093 | ||
1094 | route = get_route(pkg->route_hi, pkg->route_lo); | |
1095 | ||
1096 | xd = tb_xdomain_find_by_route(tb, route); | |
1097 | if (xd) { | |
1098 | remove_xdomain(xd); | |
1099 | tb_xdomain_put(xd); | |
1100 | } | |
1101 | } | |
1102 | ||
f67cf491 MW |
1103 | static struct pci_dev *get_upstream_port(struct pci_dev *pdev) |
1104 | { | |
1105 | struct pci_dev *parent; | |
1106 | ||
1107 | parent = pci_upstream_bridge(pdev); | |
1108 | while (parent) { | |
1109 | if (!pci_is_pcie(parent)) | |
1110 | return NULL; | |
1111 | if (pci_pcie_type(parent) == PCI_EXP_TYPE_UPSTREAM) | |
1112 | break; | |
1113 | parent = pci_upstream_bridge(parent); | |
1114 | } | |
1115 | ||
1116 | if (!parent) | |
1117 | return NULL; | |
1118 | ||
1119 | switch (parent->device) { | |
1120 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE: | |
1121 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_BRIDGE: | |
1122 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE: | |
1123 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE: | |
1124 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE: | |
1125 | return parent; | |
1126 | } | |
1127 | ||
1128 | return NULL; | |
1129 | } | |
1130 | ||
1131 | static bool icm_ar_is_supported(struct tb *tb) | |
1132 | { | |
1133 | struct pci_dev *upstream_port; | |
1134 | struct icm *icm = tb_priv(tb); | |
1135 | ||
1136 | /* | |
1137 | * Starting from Alpine Ridge we can use ICM on Apple machines | |
1138 | * as well. We just need to reset and re-enable it first. | |
1139 | */ | |
630b3aff | 1140 | if (!x86_apple_machine) |
f67cf491 MW |
1141 | return true; |
1142 | ||
1143 | /* | |
1144 | * Find the upstream PCIe port in case we need to do reset | |
1145 | * through its vendor specific registers. | |
1146 | */ | |
1147 | upstream_port = get_upstream_port(tb->nhi->pdev); | |
1148 | if (upstream_port) { | |
1149 | int cap; | |
1150 | ||
1151 | cap = pci_find_ext_capability(upstream_port, | |
1152 | PCI_EXT_CAP_ID_VNDR); | |
1153 | if (cap > 0) { | |
1154 | icm->upstream_port = upstream_port; | |
1155 | icm->vnd_cap = cap; | |
1156 | ||
1157 | return true; | |
1158 | } | |
1159 | } | |
1160 | ||
1161 | return false; | |
1162 | } | |
1163 | ||
1164 | static int icm_ar_get_mode(struct tb *tb) | |
1165 | { | |
1166 | struct tb_nhi *nhi = tb->nhi; | |
3e315e54 | 1167 | int retries = 60; |
f67cf491 MW |
1168 | u32 val; |
1169 | ||
1170 | do { | |
1171 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1172 | if (val & REG_FW_STS_NVM_AUTH_DONE) | |
1173 | break; | |
3e315e54 | 1174 | msleep(50); |
f67cf491 MW |
1175 | } while (--retries); |
1176 | ||
1177 | if (!retries) { | |
1178 | dev_err(&nhi->pdev->dev, "ICM firmware not authenticated\n"); | |
1179 | return -ENODEV; | |
1180 | } | |
1181 | ||
1182 | return nhi_mailbox_mode(nhi); | |
1183 | } | |
1184 | ||
afa11ff5 MW |
1185 | static int |
1186 | icm_ar_driver_ready(struct tb *tb, enum tb_security_level *security_level, | |
1187 | size_t *nboot_acl) | |
1188 | { | |
1189 | struct icm_ar_pkg_driver_ready_response reply; | |
1190 | struct icm_pkg_driver_ready request = { | |
1191 | .hdr.code = ICM_DRIVER_READY, | |
1192 | }; | |
1193 | int ret; | |
1194 | ||
1195 | memset(&reply, 0, sizeof(reply)); | |
1196 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1197 | 1, ICM_TIMEOUT); | |
1198 | if (ret) | |
1199 | return ret; | |
1200 | ||
1201 | if (security_level) | |
1202 | *security_level = reply.info & ICM_AR_INFO_SLEVEL_MASK; | |
1203 | if (nboot_acl && (reply.info & ICM_AR_INFO_BOOT_ACL_SUPPORTED)) | |
1204 | *nboot_acl = (reply.info & ICM_AR_INFO_BOOT_ACL_MASK) >> | |
1205 | ICM_AR_INFO_BOOT_ACL_SHIFT; | |
1206 | return 0; | |
1207 | } | |
1208 | ||
f67cf491 MW |
1209 | static int icm_ar_get_route(struct tb *tb, u8 link, u8 depth, u64 *route) |
1210 | { | |
1211 | struct icm_ar_pkg_get_route_response reply; | |
1212 | struct icm_ar_pkg_get_route request = { | |
1213 | .hdr = { .code = ICM_GET_ROUTE }, | |
1214 | .link_info = depth << ICM_LINK_INFO_DEPTH_SHIFT | link, | |
1215 | }; | |
1216 | int ret; | |
1217 | ||
1218 | memset(&reply, 0, sizeof(reply)); | |
1219 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1220 | 1, ICM_TIMEOUT); | |
1221 | if (ret) | |
1222 | return ret; | |
1223 | ||
1224 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1225 | return -EIO; | |
1226 | ||
1227 | *route = get_route(reply.route_hi, reply.route_lo); | |
1228 | return 0; | |
1229 | } | |
1230 | ||
afa11ff5 MW |
1231 | static int icm_ar_get_boot_acl(struct tb *tb, uuid_t *uuids, size_t nuuids) |
1232 | { | |
1233 | struct icm_ar_pkg_preboot_acl_response reply; | |
1234 | struct icm_ar_pkg_preboot_acl request = { | |
1235 | .hdr = { .code = ICM_PREBOOT_ACL }, | |
1236 | }; | |
1237 | int ret, i; | |
1238 | ||
1239 | memset(&reply, 0, sizeof(reply)); | |
1240 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1241 | 1, ICM_TIMEOUT); | |
1242 | if (ret) | |
1243 | return ret; | |
1244 | ||
1245 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1246 | return -EIO; | |
1247 | ||
1248 | for (i = 0; i < nuuids; i++) { | |
1249 | u32 *uuid = (u32 *)&uuids[i]; | |
1250 | ||
1251 | uuid[0] = reply.acl[i].uuid_lo; | |
1252 | uuid[1] = reply.acl[i].uuid_hi; | |
1253 | ||
1254 | if (uuid[0] == 0xffffffff && uuid[1] == 0xffffffff) { | |
1255 | /* Map empty entries to null UUID */ | |
1256 | uuid[0] = 0; | |
1257 | uuid[1] = 0; | |
a78af936 | 1258 | } else if (uuid[0] != 0 || uuid[1] != 0) { |
afa11ff5 MW |
1259 | /* Upper two DWs are always one's */ |
1260 | uuid[2] = 0xffffffff; | |
1261 | uuid[3] = 0xffffffff; | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | return ret; | |
1266 | } | |
1267 | ||
1268 | static int icm_ar_set_boot_acl(struct tb *tb, const uuid_t *uuids, | |
1269 | size_t nuuids) | |
1270 | { | |
1271 | struct icm_ar_pkg_preboot_acl_response reply; | |
1272 | struct icm_ar_pkg_preboot_acl request = { | |
1273 | .hdr = { | |
1274 | .code = ICM_PREBOOT_ACL, | |
1275 | .flags = ICM_FLAGS_WRITE, | |
1276 | }, | |
1277 | }; | |
1278 | int ret, i; | |
1279 | ||
1280 | for (i = 0; i < nuuids; i++) { | |
1281 | const u32 *uuid = (const u32 *)&uuids[i]; | |
1282 | ||
1283 | if (uuid_is_null(&uuids[i])) { | |
1284 | /* | |
1285 | * Map null UUID to the empty (all one) entries | |
1286 | * for ICM. | |
1287 | */ | |
1288 | request.acl[i].uuid_lo = 0xffffffff; | |
1289 | request.acl[i].uuid_hi = 0xffffffff; | |
1290 | } else { | |
1291 | /* Two high DWs need to be set to all one */ | |
1292 | if (uuid[2] != 0xffffffff || uuid[3] != 0xffffffff) | |
1293 | return -EINVAL; | |
1294 | ||
1295 | request.acl[i].uuid_lo = uuid[0]; | |
1296 | request.acl[i].uuid_hi = uuid[1]; | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | memset(&reply, 0, sizeof(reply)); | |
1301 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1302 | 1, ICM_TIMEOUT); | |
1303 | if (ret) | |
1304 | return ret; | |
1305 | ||
1306 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1307 | return -EIO; | |
1308 | ||
1309 | return 0; | |
1310 | } | |
1311 | ||
f67cf491 MW |
1312 | static void icm_handle_notification(struct work_struct *work) |
1313 | { | |
1314 | struct icm_notification *n = container_of(work, typeof(*n), work); | |
1315 | struct tb *tb = n->tb; | |
1316 | struct icm *icm = tb_priv(tb); | |
1317 | ||
1318 | mutex_lock(&tb->lock); | |
1319 | ||
1320 | switch (n->pkg->code) { | |
1321 | case ICM_EVENT_DEVICE_CONNECTED: | |
1322 | icm->device_connected(tb, n->pkg); | |
1323 | break; | |
1324 | case ICM_EVENT_DEVICE_DISCONNECTED: | |
1325 | icm->device_disconnected(tb, n->pkg); | |
1326 | break; | |
d1ff7024 MW |
1327 | case ICM_EVENT_XDOMAIN_CONNECTED: |
1328 | icm->xdomain_connected(tb, n->pkg); | |
1329 | break; | |
1330 | case ICM_EVENT_XDOMAIN_DISCONNECTED: | |
1331 | icm->xdomain_disconnected(tb, n->pkg); | |
1332 | break; | |
f67cf491 MW |
1333 | } |
1334 | ||
1335 | mutex_unlock(&tb->lock); | |
1336 | ||
1337 | kfree(n->pkg); | |
1338 | kfree(n); | |
1339 | } | |
1340 | ||
1341 | static void icm_handle_event(struct tb *tb, enum tb_cfg_pkg_type type, | |
1342 | const void *buf, size_t size) | |
1343 | { | |
1344 | struct icm_notification *n; | |
1345 | ||
1346 | n = kmalloc(sizeof(*n), GFP_KERNEL); | |
1347 | if (!n) | |
1348 | return; | |
1349 | ||
1350 | INIT_WORK(&n->work, icm_handle_notification); | |
1351 | n->pkg = kmemdup(buf, size, GFP_KERNEL); | |
1352 | n->tb = tb; | |
1353 | ||
1354 | queue_work(tb->wq, &n->work); | |
1355 | } | |
1356 | ||
1357 | static int | |
afa11ff5 MW |
1358 | __icm_driver_ready(struct tb *tb, enum tb_security_level *security_level, |
1359 | size_t *nboot_acl) | |
f67cf491 | 1360 | { |
c1c79d65 | 1361 | struct icm *icm = tb_priv(tb); |
289b62e3 | 1362 | unsigned int retries = 50; |
f67cf491 MW |
1363 | int ret; |
1364 | ||
afa11ff5 | 1365 | ret = icm->driver_ready(tb, security_level, nboot_acl); |
c1c79d65 MW |
1366 | if (ret) { |
1367 | tb_err(tb, "failed to send driver ready to ICM\n"); | |
f67cf491 | 1368 | return ret; |
c1c79d65 | 1369 | } |
f67cf491 MW |
1370 | |
1371 | /* | |
1372 | * Hold on here until the switch config space is accessible so | |
1373 | * that we can read root switch config successfully. | |
1374 | */ | |
1375 | do { | |
1376 | struct tb_cfg_result res; | |
1377 | u32 tmp; | |
1378 | ||
1379 | res = tb_cfg_read_raw(tb->ctl, &tmp, 0, 0, TB_CFG_SWITCH, | |
1380 | 0, 1, 100); | |
1381 | if (!res.err) | |
1382 | return 0; | |
1383 | ||
1384 | msleep(50); | |
1385 | } while (--retries); | |
1386 | ||
289b62e3 | 1387 | tb_err(tb, "failed to read root switch config space, giving up\n"); |
f67cf491 MW |
1388 | return -ETIMEDOUT; |
1389 | } | |
1390 | ||
1391 | static int pci2cio_wait_completion(struct icm *icm, unsigned long timeout_msec) | |
1392 | { | |
1393 | unsigned long end = jiffies + msecs_to_jiffies(timeout_msec); | |
1394 | u32 cmd; | |
1395 | ||
1396 | do { | |
1397 | pci_read_config_dword(icm->upstream_port, | |
1398 | icm->vnd_cap + PCIE2CIO_CMD, &cmd); | |
1399 | if (!(cmd & PCIE2CIO_CMD_START)) { | |
1400 | if (cmd & PCIE2CIO_CMD_TIMEOUT) | |
1401 | break; | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | msleep(50); | |
1406 | } while (time_before(jiffies, end)); | |
1407 | ||
1408 | return -ETIMEDOUT; | |
1409 | } | |
1410 | ||
1411 | static int pcie2cio_read(struct icm *icm, enum tb_cfg_space cs, | |
1412 | unsigned int port, unsigned int index, u32 *data) | |
1413 | { | |
1414 | struct pci_dev *pdev = icm->upstream_port; | |
1415 | int ret, vnd_cap = icm->vnd_cap; | |
1416 | u32 cmd; | |
1417 | ||
1418 | cmd = index; | |
1419 | cmd |= (port << PCIE2CIO_CMD_PORT_SHIFT) & PCIE2CIO_CMD_PORT_MASK; | |
1420 | cmd |= (cs << PCIE2CIO_CMD_CS_SHIFT) & PCIE2CIO_CMD_CS_MASK; | |
1421 | cmd |= PCIE2CIO_CMD_START; | |
1422 | pci_write_config_dword(pdev, vnd_cap + PCIE2CIO_CMD, cmd); | |
1423 | ||
1424 | ret = pci2cio_wait_completion(icm, 5000); | |
1425 | if (ret) | |
1426 | return ret; | |
1427 | ||
1428 | pci_read_config_dword(pdev, vnd_cap + PCIE2CIO_RDDATA, data); | |
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | static int pcie2cio_write(struct icm *icm, enum tb_cfg_space cs, | |
1433 | unsigned int port, unsigned int index, u32 data) | |
1434 | { | |
1435 | struct pci_dev *pdev = icm->upstream_port; | |
1436 | int vnd_cap = icm->vnd_cap; | |
1437 | u32 cmd; | |
1438 | ||
1439 | pci_write_config_dword(pdev, vnd_cap + PCIE2CIO_WRDATA, data); | |
1440 | ||
1441 | cmd = index; | |
1442 | cmd |= (port << PCIE2CIO_CMD_PORT_SHIFT) & PCIE2CIO_CMD_PORT_MASK; | |
1443 | cmd |= (cs << PCIE2CIO_CMD_CS_SHIFT) & PCIE2CIO_CMD_CS_MASK; | |
1444 | cmd |= PCIE2CIO_CMD_WRITE | PCIE2CIO_CMD_START; | |
1445 | pci_write_config_dword(pdev, vnd_cap + PCIE2CIO_CMD, cmd); | |
1446 | ||
1447 | return pci2cio_wait_completion(icm, 5000); | |
1448 | } | |
1449 | ||
1450 | static int icm_firmware_reset(struct tb *tb, struct tb_nhi *nhi) | |
1451 | { | |
1452 | struct icm *icm = tb_priv(tb); | |
1453 | u32 val; | |
1454 | ||
77b386f3 MW |
1455 | if (!icm->upstream_port) |
1456 | return -ENODEV; | |
1457 | ||
f67cf491 MW |
1458 | /* Put ARC to wait for CIO reset event to happen */ |
1459 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1460 | val |= REG_FW_STS_CIO_RESET_REQ; | |
1461 | iowrite32(val, nhi->iobase + REG_FW_STS); | |
1462 | ||
1463 | /* Re-start ARC */ | |
1464 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1465 | val |= REG_FW_STS_ICM_EN_INVERT; | |
1466 | val |= REG_FW_STS_ICM_EN_CPU; | |
1467 | iowrite32(val, nhi->iobase + REG_FW_STS); | |
1468 | ||
1469 | /* Trigger CIO reset now */ | |
1470 | return pcie2cio_write(icm, TB_CFG_SWITCH, 0, 0x50, BIT(9)); | |
1471 | } | |
1472 | ||
1473 | static int icm_firmware_start(struct tb *tb, struct tb_nhi *nhi) | |
1474 | { | |
1475 | unsigned int retries = 10; | |
1476 | int ret; | |
1477 | u32 val; | |
1478 | ||
1479 | /* Check if the ICM firmware is already running */ | |
1480 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1481 | if (val & REG_FW_STS_ICM_EN) | |
1482 | return 0; | |
1483 | ||
1484 | dev_info(&nhi->pdev->dev, "starting ICM firmware\n"); | |
1485 | ||
1486 | ret = icm_firmware_reset(tb, nhi); | |
1487 | if (ret) | |
1488 | return ret; | |
1489 | ||
1490 | /* Wait until the ICM firmware tells us it is up and running */ | |
1491 | do { | |
1492 | /* Check that the ICM firmware is running */ | |
1493 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1494 | if (val & REG_FW_STS_NVM_AUTH_DONE) | |
1495 | return 0; | |
1496 | ||
1497 | msleep(300); | |
1498 | } while (--retries); | |
1499 | ||
1500 | return -ETIMEDOUT; | |
1501 | } | |
1502 | ||
1503 | static int icm_reset_phy_port(struct tb *tb, int phy_port) | |
1504 | { | |
1505 | struct icm *icm = tb_priv(tb); | |
1506 | u32 state0, state1; | |
1507 | int port0, port1; | |
1508 | u32 val0, val1; | |
1509 | int ret; | |
1510 | ||
1511 | if (!icm->upstream_port) | |
1512 | return 0; | |
1513 | ||
1514 | if (phy_port) { | |
1515 | port0 = 3; | |
1516 | port1 = 4; | |
1517 | } else { | |
1518 | port0 = 1; | |
1519 | port1 = 2; | |
1520 | } | |
1521 | ||
1522 | /* | |
1523 | * Read link status of both null ports belonging to a single | |
1524 | * physical port. | |
1525 | */ | |
1526 | ret = pcie2cio_read(icm, TB_CFG_PORT, port0, PHY_PORT_CS1, &val0); | |
1527 | if (ret) | |
1528 | return ret; | |
1529 | ret = pcie2cio_read(icm, TB_CFG_PORT, port1, PHY_PORT_CS1, &val1); | |
1530 | if (ret) | |
1531 | return ret; | |
1532 | ||
1533 | state0 = val0 & PHY_PORT_CS1_LINK_STATE_MASK; | |
1534 | state0 >>= PHY_PORT_CS1_LINK_STATE_SHIFT; | |
1535 | state1 = val1 & PHY_PORT_CS1_LINK_STATE_MASK; | |
1536 | state1 >>= PHY_PORT_CS1_LINK_STATE_SHIFT; | |
1537 | ||
1538 | /* If they are both up we need to reset them now */ | |
1539 | if (state0 != TB_PORT_UP || state1 != TB_PORT_UP) | |
1540 | return 0; | |
1541 | ||
1542 | val0 |= PHY_PORT_CS1_LINK_DISABLE; | |
1543 | ret = pcie2cio_write(icm, TB_CFG_PORT, port0, PHY_PORT_CS1, val0); | |
1544 | if (ret) | |
1545 | return ret; | |
1546 | ||
1547 | val1 |= PHY_PORT_CS1_LINK_DISABLE; | |
1548 | ret = pcie2cio_write(icm, TB_CFG_PORT, port1, PHY_PORT_CS1, val1); | |
1549 | if (ret) | |
1550 | return ret; | |
1551 | ||
1552 | /* Wait a bit and then re-enable both ports */ | |
1553 | usleep_range(10, 100); | |
1554 | ||
1555 | ret = pcie2cio_read(icm, TB_CFG_PORT, port0, PHY_PORT_CS1, &val0); | |
1556 | if (ret) | |
1557 | return ret; | |
1558 | ret = pcie2cio_read(icm, TB_CFG_PORT, port1, PHY_PORT_CS1, &val1); | |
1559 | if (ret) | |
1560 | return ret; | |
1561 | ||
1562 | val0 &= ~PHY_PORT_CS1_LINK_DISABLE; | |
1563 | ret = pcie2cio_write(icm, TB_CFG_PORT, port0, PHY_PORT_CS1, val0); | |
1564 | if (ret) | |
1565 | return ret; | |
1566 | ||
1567 | val1 &= ~PHY_PORT_CS1_LINK_DISABLE; | |
1568 | return pcie2cio_write(icm, TB_CFG_PORT, port1, PHY_PORT_CS1, val1); | |
1569 | } | |
1570 | ||
1571 | static int icm_firmware_init(struct tb *tb) | |
1572 | { | |
1573 | struct icm *icm = tb_priv(tb); | |
1574 | struct tb_nhi *nhi = tb->nhi; | |
1575 | int ret; | |
1576 | ||
1577 | ret = icm_firmware_start(tb, nhi); | |
1578 | if (ret) { | |
1579 | dev_err(&nhi->pdev->dev, "could not start ICM firmware\n"); | |
1580 | return ret; | |
1581 | } | |
1582 | ||
1583 | if (icm->get_mode) { | |
1584 | ret = icm->get_mode(tb); | |
1585 | ||
1586 | switch (ret) { | |
e6b245cc MW |
1587 | case NHI_FW_SAFE_MODE: |
1588 | icm->safe_mode = true; | |
1589 | break; | |
1590 | ||
f67cf491 MW |
1591 | case NHI_FW_CM_MODE: |
1592 | /* Ask ICM to accept all Thunderbolt devices */ | |
1593 | nhi_mailbox_cmd(nhi, NHI_MAILBOX_ALLOW_ALL_DEVS, 0); | |
1594 | break; | |
1595 | ||
1596 | default: | |
3e315e54 MW |
1597 | if (ret < 0) |
1598 | return ret; | |
1599 | ||
f67cf491 MW |
1600 | tb_err(tb, "ICM firmware is in wrong mode: %u\n", ret); |
1601 | return -ENODEV; | |
1602 | } | |
1603 | } | |
1604 | ||
1605 | /* | |
1606 | * Reset both physical ports if there is anything connected to | |
1607 | * them already. | |
1608 | */ | |
1609 | ret = icm_reset_phy_port(tb, 0); | |
1610 | if (ret) | |
1611 | dev_warn(&nhi->pdev->dev, "failed to reset links on port0\n"); | |
1612 | ret = icm_reset_phy_port(tb, 1); | |
1613 | if (ret) | |
1614 | dev_warn(&nhi->pdev->dev, "failed to reset links on port1\n"); | |
1615 | ||
1616 | return 0; | |
1617 | } | |
1618 | ||
1619 | static int icm_driver_ready(struct tb *tb) | |
1620 | { | |
e6b245cc | 1621 | struct icm *icm = tb_priv(tb); |
f67cf491 MW |
1622 | int ret; |
1623 | ||
1624 | ret = icm_firmware_init(tb); | |
1625 | if (ret) | |
1626 | return ret; | |
1627 | ||
e6b245cc MW |
1628 | if (icm->safe_mode) { |
1629 | tb_info(tb, "Thunderbolt host controller is in safe mode.\n"); | |
1630 | tb_info(tb, "You need to update NVM firmware of the controller before it can be used.\n"); | |
1631 | tb_info(tb, "For latest updates check https://thunderbolttechnology.net/updates.\n"); | |
1632 | return 0; | |
1633 | } | |
1634 | ||
afa11ff5 MW |
1635 | ret = __icm_driver_ready(tb, &tb->security_level, &tb->nboot_acl); |
1636 | if (ret) | |
1637 | return ret; | |
1638 | ||
1639 | /* | |
1640 | * Make sure the number of supported preboot ACL matches what we | |
1641 | * expect or disable the whole feature. | |
1642 | */ | |
1643 | if (tb->nboot_acl > icm->max_boot_acl) | |
1644 | tb->nboot_acl = 0; | |
1645 | ||
1646 | return 0; | |
f67cf491 MW |
1647 | } |
1648 | ||
1649 | static int icm_suspend(struct tb *tb) | |
1650 | { | |
a684c5b1 RW |
1651 | int ret; |
1652 | ||
1653 | ret = nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_SAVE_DEVS, 0); | |
1654 | if (ret) | |
1655 | tb_info(tb, "Ignoring mailbox command error (%d) in %s\n", | |
1656 | ret, __func__); | |
1657 | ||
1658 | return 0; | |
f67cf491 MW |
1659 | } |
1660 | ||
1661 | /* | |
1662 | * Mark all switches (except root switch) below this one unplugged. ICM | |
1663 | * firmware will send us an updated list of switches after we have send | |
1664 | * it driver ready command. If a switch is not in that list it will be | |
1665 | * removed when we perform rescan. | |
1666 | */ | |
1667 | static void icm_unplug_children(struct tb_switch *sw) | |
1668 | { | |
1669 | unsigned int i; | |
1670 | ||
1671 | if (tb_route(sw)) | |
1672 | sw->is_unplugged = true; | |
1673 | ||
1674 | for (i = 1; i <= sw->config.max_port_number; i++) { | |
1675 | struct tb_port *port = &sw->ports[i]; | |
1676 | ||
1677 | if (tb_is_upstream_port(port)) | |
1678 | continue; | |
d1ff7024 MW |
1679 | if (port->xdomain) { |
1680 | port->xdomain->is_unplugged = true; | |
1681 | continue; | |
1682 | } | |
f67cf491 MW |
1683 | if (!port->remote) |
1684 | continue; | |
1685 | ||
1686 | icm_unplug_children(port->remote->sw); | |
1687 | } | |
1688 | } | |
1689 | ||
1690 | static void icm_free_unplugged_children(struct tb_switch *sw) | |
1691 | { | |
1692 | unsigned int i; | |
1693 | ||
1694 | for (i = 1; i <= sw->config.max_port_number; i++) { | |
1695 | struct tb_port *port = &sw->ports[i]; | |
1696 | ||
1697 | if (tb_is_upstream_port(port)) | |
1698 | continue; | |
d1ff7024 MW |
1699 | |
1700 | if (port->xdomain && port->xdomain->is_unplugged) { | |
1701 | tb_xdomain_remove(port->xdomain); | |
1702 | port->xdomain = NULL; | |
1703 | continue; | |
1704 | } | |
1705 | ||
f67cf491 MW |
1706 | if (!port->remote) |
1707 | continue; | |
1708 | ||
1709 | if (port->remote->sw->is_unplugged) { | |
1710 | tb_switch_remove(port->remote->sw); | |
1711 | port->remote = NULL; | |
1712 | } else { | |
1713 | icm_free_unplugged_children(port->remote->sw); | |
1714 | } | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | static void icm_rescan_work(struct work_struct *work) | |
1719 | { | |
1720 | struct icm *icm = container_of(work, struct icm, rescan_work.work); | |
1721 | struct tb *tb = icm_to_tb(icm); | |
1722 | ||
1723 | mutex_lock(&tb->lock); | |
1724 | if (tb->root_switch) | |
1725 | icm_free_unplugged_children(tb->root_switch); | |
1726 | mutex_unlock(&tb->lock); | |
1727 | } | |
1728 | ||
1729 | static void icm_complete(struct tb *tb) | |
1730 | { | |
1731 | struct icm *icm = tb_priv(tb); | |
1732 | ||
1733 | if (tb->nhi->going_away) | |
1734 | return; | |
1735 | ||
1736 | icm_unplug_children(tb->root_switch); | |
1737 | ||
1738 | /* | |
1739 | * Now all existing children should be resumed, start events | |
1740 | * from ICM to get updated status. | |
1741 | */ | |
afa11ff5 | 1742 | __icm_driver_ready(tb, NULL, NULL); |
f67cf491 MW |
1743 | |
1744 | /* | |
1745 | * We do not get notifications of devices that have been | |
1746 | * unplugged during suspend so schedule rescan to clean them up | |
1747 | * if any. | |
1748 | */ | |
1749 | queue_delayed_work(tb->wq, &icm->rescan_work, msecs_to_jiffies(500)); | |
1750 | } | |
1751 | ||
1752 | static int icm_start(struct tb *tb) | |
1753 | { | |
e6b245cc | 1754 | struct icm *icm = tb_priv(tb); |
f67cf491 MW |
1755 | int ret; |
1756 | ||
e6b245cc MW |
1757 | if (icm->safe_mode) |
1758 | tb->root_switch = tb_switch_alloc_safe_mode(tb, &tb->dev, 0); | |
1759 | else | |
1760 | tb->root_switch = tb_switch_alloc(tb, &tb->dev, 0); | |
f67cf491 MW |
1761 | if (!tb->root_switch) |
1762 | return -ENODEV; | |
1763 | ||
e6b245cc MW |
1764 | /* |
1765 | * NVM upgrade has not been tested on Apple systems and they | |
1766 | * don't provide images publicly either. To be on the safe side | |
1767 | * prevent root switch NVM upgrade on Macs for now. | |
1768 | */ | |
630b3aff | 1769 | tb->root_switch->no_nvm_upgrade = x86_apple_machine; |
e6b245cc | 1770 | |
f67cf491 | 1771 | ret = tb_switch_add(tb->root_switch); |
d1ff7024 | 1772 | if (ret) { |
f67cf491 | 1773 | tb_switch_put(tb->root_switch); |
d1ff7024 MW |
1774 | tb->root_switch = NULL; |
1775 | } | |
f67cf491 MW |
1776 | |
1777 | return ret; | |
1778 | } | |
1779 | ||
1780 | static void icm_stop(struct tb *tb) | |
1781 | { | |
1782 | struct icm *icm = tb_priv(tb); | |
1783 | ||
1784 | cancel_delayed_work(&icm->rescan_work); | |
1785 | tb_switch_remove(tb->root_switch); | |
1786 | tb->root_switch = NULL; | |
1787 | nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DRV_UNLOADS, 0); | |
1788 | } | |
1789 | ||
e6b245cc MW |
1790 | static int icm_disconnect_pcie_paths(struct tb *tb) |
1791 | { | |
1792 | return nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DISCONNECT_PCIE_PATHS, 0); | |
1793 | } | |
1794 | ||
afa11ff5 | 1795 | /* Falcon Ridge */ |
f67cf491 MW |
1796 | static const struct tb_cm_ops icm_fr_ops = { |
1797 | .driver_ready = icm_driver_ready, | |
1798 | .start = icm_start, | |
1799 | .stop = icm_stop, | |
1800 | .suspend = icm_suspend, | |
1801 | .complete = icm_complete, | |
1802 | .handle_event = icm_handle_event, | |
1803 | .approve_switch = icm_fr_approve_switch, | |
1804 | .add_switch_key = icm_fr_add_switch_key, | |
1805 | .challenge_switch_key = icm_fr_challenge_switch_key, | |
e6b245cc | 1806 | .disconnect_pcie_paths = icm_disconnect_pcie_paths, |
d1ff7024 MW |
1807 | .approve_xdomain_paths = icm_fr_approve_xdomain_paths, |
1808 | .disconnect_xdomain_paths = icm_fr_disconnect_xdomain_paths, | |
f67cf491 MW |
1809 | }; |
1810 | ||
afa11ff5 MW |
1811 | /* Alpine Ridge */ |
1812 | static const struct tb_cm_ops icm_ar_ops = { | |
1813 | .driver_ready = icm_driver_ready, | |
1814 | .start = icm_start, | |
1815 | .stop = icm_stop, | |
1816 | .suspend = icm_suspend, | |
1817 | .complete = icm_complete, | |
1818 | .handle_event = icm_handle_event, | |
1819 | .get_boot_acl = icm_ar_get_boot_acl, | |
1820 | .set_boot_acl = icm_ar_set_boot_acl, | |
1821 | .approve_switch = icm_fr_approve_switch, | |
1822 | .add_switch_key = icm_fr_add_switch_key, | |
1823 | .challenge_switch_key = icm_fr_challenge_switch_key, | |
1824 | .disconnect_pcie_paths = icm_disconnect_pcie_paths, | |
1825 | .approve_xdomain_paths = icm_fr_approve_xdomain_paths, | |
1826 | .disconnect_xdomain_paths = icm_fr_disconnect_xdomain_paths, | |
1827 | }; | |
1828 | ||
d1d8b263 RM |
1829 | /* Titan Ridge */ |
1830 | static const struct tb_cm_ops icm_tr_ops = { | |
1831 | .driver_ready = icm_driver_ready, | |
1832 | .start = icm_start, | |
1833 | .stop = icm_stop, | |
1834 | .suspend = icm_suspend, | |
1835 | .complete = icm_complete, | |
1836 | .handle_event = icm_handle_event, | |
1837 | .get_boot_acl = icm_ar_get_boot_acl, | |
1838 | .set_boot_acl = icm_ar_set_boot_acl, | |
1839 | .approve_switch = icm_tr_approve_switch, | |
1840 | .add_switch_key = icm_tr_add_switch_key, | |
1841 | .challenge_switch_key = icm_tr_challenge_switch_key, | |
1842 | .disconnect_pcie_paths = icm_disconnect_pcie_paths, | |
1843 | .approve_xdomain_paths = icm_tr_approve_xdomain_paths, | |
1844 | .disconnect_xdomain_paths = icm_tr_disconnect_xdomain_paths, | |
1845 | }; | |
1846 | ||
f67cf491 MW |
1847 | struct tb *icm_probe(struct tb_nhi *nhi) |
1848 | { | |
1849 | struct icm *icm; | |
1850 | struct tb *tb; | |
1851 | ||
1852 | tb = tb_domain_alloc(nhi, sizeof(struct icm)); | |
1853 | if (!tb) | |
1854 | return NULL; | |
1855 | ||
1856 | icm = tb_priv(tb); | |
1857 | INIT_DELAYED_WORK(&icm->rescan_work, icm_rescan_work); | |
1858 | mutex_init(&icm->request_lock); | |
1859 | ||
1860 | switch (nhi->pdev->device) { | |
1861 | case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI: | |
1862 | case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI: | |
1863 | icm->is_supported = icm_fr_is_supported; | |
1864 | icm->get_route = icm_fr_get_route; | |
c1c79d65 | 1865 | icm->driver_ready = icm_fr_driver_ready; |
f67cf491 MW |
1866 | icm->device_connected = icm_fr_device_connected; |
1867 | icm->device_disconnected = icm_fr_device_disconnected; | |
d1ff7024 MW |
1868 | icm->xdomain_connected = icm_fr_xdomain_connected; |
1869 | icm->xdomain_disconnected = icm_fr_xdomain_disconnected; | |
f67cf491 MW |
1870 | tb->cm_ops = &icm_fr_ops; |
1871 | break; | |
1872 | ||
1873 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_NHI: | |
1874 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_NHI: | |
1875 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_NHI: | |
1876 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_NHI: | |
1877 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_NHI: | |
afa11ff5 | 1878 | icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES; |
f67cf491 MW |
1879 | icm->is_supported = icm_ar_is_supported; |
1880 | icm->get_mode = icm_ar_get_mode; | |
1881 | icm->get_route = icm_ar_get_route; | |
afa11ff5 | 1882 | icm->driver_ready = icm_ar_driver_ready; |
f67cf491 MW |
1883 | icm->device_connected = icm_fr_device_connected; |
1884 | icm->device_disconnected = icm_fr_device_disconnected; | |
d1ff7024 MW |
1885 | icm->xdomain_connected = icm_fr_xdomain_connected; |
1886 | icm->xdomain_disconnected = icm_fr_xdomain_disconnected; | |
afa11ff5 | 1887 | tb->cm_ops = &icm_ar_ops; |
f67cf491 | 1888 | break; |
d1d8b263 RM |
1889 | |
1890 | case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_NHI: | |
1891 | case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_NHI: | |
1892 | icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES; | |
1893 | icm->is_supported = icm_ar_is_supported; | |
1894 | icm->get_mode = icm_ar_get_mode; | |
1895 | icm->driver_ready = icm_tr_driver_ready; | |
1896 | icm->device_connected = icm_tr_device_connected; | |
1897 | icm->device_disconnected = icm_tr_device_disconnected; | |
1898 | icm->xdomain_connected = icm_tr_xdomain_connected; | |
1899 | icm->xdomain_disconnected = icm_tr_xdomain_disconnected; | |
1900 | tb->cm_ops = &icm_tr_ops; | |
1901 | break; | |
f67cf491 MW |
1902 | } |
1903 | ||
1904 | if (!icm->is_supported || !icm->is_supported(tb)) { | |
1905 | dev_dbg(&nhi->pdev->dev, "ICM not supported on this controller\n"); | |
1906 | tb_domain_put(tb); | |
1907 | return NULL; | |
1908 | } | |
1909 | ||
1910 | return tb; | |
1911 | } |