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fd3b339c | 1 | // SPDX-License-Identifier: GPL-2.0 |
f67cf491 MW |
2 | /* |
3 | * Internal Thunderbolt Connection Manager. This is a firmware running on | |
4 | * the Thunderbolt host controller performing most of the low-level | |
5 | * handling. | |
6 | * | |
7 | * Copyright (C) 2017, Intel Corporation | |
8 | * Authors: Michael Jamet <michael.jamet@intel.com> | |
9 | * Mika Westerberg <mika.westerberg@linux.intel.com> | |
f67cf491 MW |
10 | */ |
11 | ||
12 | #include <linux/delay.h> | |
f67cf491 | 13 | #include <linux/mutex.h> |
354a7a77 | 14 | #include <linux/moduleparam.h> |
f67cf491 | 15 | #include <linux/pci.h> |
2d8ff0b5 | 16 | #include <linux/pm_runtime.h> |
630b3aff | 17 | #include <linux/platform_data/x86/apple.h> |
f67cf491 MW |
18 | #include <linux/sizes.h> |
19 | #include <linux/slab.h> | |
20 | #include <linux/workqueue.h> | |
21 | ||
22 | #include "ctl.h" | |
23 | #include "nhi_regs.h" | |
24 | #include "tb.h" | |
25 | ||
26 | #define PCIE2CIO_CMD 0x30 | |
27 | #define PCIE2CIO_CMD_TIMEOUT BIT(31) | |
28 | #define PCIE2CIO_CMD_START BIT(30) | |
29 | #define PCIE2CIO_CMD_WRITE BIT(21) | |
30 | #define PCIE2CIO_CMD_CS_MASK GENMASK(20, 19) | |
31 | #define PCIE2CIO_CMD_CS_SHIFT 19 | |
32 | #define PCIE2CIO_CMD_PORT_MASK GENMASK(18, 13) | |
33 | #define PCIE2CIO_CMD_PORT_SHIFT 13 | |
34 | ||
35 | #define PCIE2CIO_WRDATA 0x34 | |
36 | #define PCIE2CIO_RDDATA 0x38 | |
37 | ||
38 | #define PHY_PORT_CS1 0x37 | |
39 | #define PHY_PORT_CS1_LINK_DISABLE BIT(14) | |
40 | #define PHY_PORT_CS1_LINK_STATE_MASK GENMASK(29, 26) | |
41 | #define PHY_PORT_CS1_LINK_STATE_SHIFT 26 | |
42 | ||
0b0a0bd0 MW |
43 | #define ICM_TIMEOUT 5000 /* ms */ |
44 | #define ICM_APPROVE_TIMEOUT 10000 /* ms */ | |
f67cf491 | 45 | #define ICM_MAX_LINK 4 |
f67cf491 | 46 | |
354a7a77 MW |
47 | static bool start_icm; |
48 | module_param(start_icm, bool, 0444); | |
49 | MODULE_PARM_DESC(start_icm, "start ICM firmware if it is not running (default: false)"); | |
50 | ||
9039387e MW |
51 | /** |
52 | * struct usb4_switch_nvm_auth - Holds USB4 NVM_AUTH status | |
53 | * @reply: Reply from ICM firmware is placed here | |
54 | * @request: Request that is sent to ICM firmware | |
55 | * @icm: Pointer to ICM private data | |
56 | */ | |
57 | struct usb4_switch_nvm_auth { | |
58 | struct icm_usb4_switch_op_response reply; | |
59 | struct icm_usb4_switch_op request; | |
60 | struct icm *icm; | |
61 | }; | |
62 | ||
f67cf491 MW |
63 | /** |
64 | * struct icm - Internal connection manager private data | |
65 | * @request_lock: Makes sure only one message is send to ICM at time | |
66 | * @rescan_work: Work used to rescan the surviving switches after resume | |
67 | * @upstream_port: Pointer to the PCIe upstream port this host | |
68 | * controller is connected. This is only set for systems | |
69 | * where ICM needs to be started manually | |
70 | * @vnd_cap: Vendor defined capability where PCIe2CIO mailbox resides | |
71 | * (only set when @upstream_port is not %NULL) | |
e6b245cc | 72 | * @safe_mode: ICM is in safe mode |
9aaa3b8b | 73 | * @max_boot_acl: Maximum number of preboot ACL entries (%0 if not supported) |
2d8ff0b5 | 74 | * @rpm: Does the controller support runtime PM (RTD3) |
f437c24b | 75 | * @can_upgrade_nvm: Can the NVM firmware be upgrade on this controller |
9039387e MW |
76 | * @proto_version: Firmware protocol version |
77 | * @last_nvm_auth: Last USB4 router NVM_AUTH result (or %NULL if not set) | |
3cdb9446 | 78 | * @veto: Is RTD3 veto in effect |
f67cf491 | 79 | * @is_supported: Checks if we can support ICM on this controller |
0d53827d | 80 | * @cio_reset: Trigger CIO reset |
f67cf491 MW |
81 | * @get_mode: Read and return the ICM firmware mode (optional) |
82 | * @get_route: Find a route string for given switch | |
d04522fa | 83 | * @save_devices: Ask ICM to save devices to ACL when suspending (optional) |
3080e197 | 84 | * @driver_ready: Send driver ready message to ICM |
3cdb9446 | 85 | * @set_uuid: Set UUID for the root switch (optional) |
f67cf491 MW |
86 | * @device_connected: Handle device connected ICM message |
87 | * @device_disconnected: Handle device disconnected ICM message | |
af6bd59e LJ |
88 | * @xdomain_connected: Handle XDomain connected ICM message |
89 | * @xdomain_disconnected: Handle XDomain disconnected ICM message | |
3cdb9446 | 90 | * @rtd3_veto: Handle RTD3 veto notification ICM message |
f67cf491 MW |
91 | */ |
92 | struct icm { | |
93 | struct mutex request_lock; | |
94 | struct delayed_work rescan_work; | |
95 | struct pci_dev *upstream_port; | |
96 | int vnd_cap; | |
e6b245cc | 97 | bool safe_mode; |
45ef561a | 98 | size_t max_boot_acl; |
2d8ff0b5 | 99 | bool rpm; |
f437c24b | 100 | bool can_upgrade_nvm; |
9039387e MW |
101 | u8 proto_version; |
102 | struct usb4_switch_nvm_auth *last_nvm_auth; | |
3cdb9446 | 103 | bool veto; |
f67cf491 | 104 | bool (*is_supported)(struct tb *tb); |
0d53827d | 105 | int (*cio_reset)(struct tb *tb); |
f67cf491 MW |
106 | int (*get_mode)(struct tb *tb); |
107 | int (*get_route)(struct tb *tb, u8 link, u8 depth, u64 *route); | |
d04522fa | 108 | void (*save_devices)(struct tb *tb); |
3080e197 | 109 | int (*driver_ready)(struct tb *tb, |
9aaa3b8b | 110 | enum tb_security_level *security_level, |
9039387e | 111 | u8 *proto_version, size_t *nboot_acl, bool *rpm); |
3cdb9446 | 112 | void (*set_uuid)(struct tb *tb); |
f67cf491 MW |
113 | void (*device_connected)(struct tb *tb, |
114 | const struct icm_pkg_header *hdr); | |
115 | void (*device_disconnected)(struct tb *tb, | |
116 | const struct icm_pkg_header *hdr); | |
d1ff7024 MW |
117 | void (*xdomain_connected)(struct tb *tb, |
118 | const struct icm_pkg_header *hdr); | |
119 | void (*xdomain_disconnected)(struct tb *tb, | |
120 | const struct icm_pkg_header *hdr); | |
3cdb9446 | 121 | void (*rtd3_veto)(struct tb *tb, const struct icm_pkg_header *hdr); |
f67cf491 MW |
122 | }; |
123 | ||
124 | struct icm_notification { | |
125 | struct work_struct work; | |
126 | struct icm_pkg_header *pkg; | |
127 | struct tb *tb; | |
128 | }; | |
129 | ||
2d8ff0b5 MW |
130 | struct ep_name_entry { |
131 | u8 len; | |
132 | u8 type; | |
3084ea9e | 133 | u8 data[]; |
2d8ff0b5 MW |
134 | }; |
135 | ||
136 | #define EP_NAME_INTEL_VSS 0x10 | |
137 | ||
138 | /* Intel Vendor specific structure */ | |
139 | struct intel_vss { | |
140 | u16 vendor; | |
141 | u16 model; | |
142 | u8 mc; | |
143 | u8 flags; | |
144 | u16 pci_devid; | |
145 | u32 nvm_version; | |
146 | }; | |
147 | ||
148 | #define INTEL_VSS_FLAGS_RTD3 BIT(0) | |
149 | ||
150 | static const struct intel_vss *parse_intel_vss(const void *ep_name, size_t size) | |
151 | { | |
152 | const void *end = ep_name + size; | |
153 | ||
154 | while (ep_name < end) { | |
155 | const struct ep_name_entry *ep = ep_name; | |
156 | ||
157 | if (!ep->len) | |
158 | break; | |
159 | if (ep_name + ep->len > end) | |
160 | break; | |
161 | ||
162 | if (ep->type == EP_NAME_INTEL_VSS) | |
163 | return (const struct intel_vss *)ep->data; | |
164 | ||
165 | ep_name += ep->len; | |
166 | } | |
167 | ||
168 | return NULL; | |
169 | } | |
170 | ||
b5db76db MW |
171 | static bool intel_vss_is_rtd3(const void *ep_name, size_t size) |
172 | { | |
173 | const struct intel_vss *vss; | |
174 | ||
175 | vss = parse_intel_vss(ep_name, size); | |
176 | if (vss) | |
177 | return !!(vss->flags & INTEL_VSS_FLAGS_RTD3); | |
178 | ||
179 | return false; | |
180 | } | |
181 | ||
f67cf491 MW |
182 | static inline struct tb *icm_to_tb(struct icm *icm) |
183 | { | |
184 | return ((void *)icm - sizeof(struct tb)); | |
185 | } | |
186 | ||
187 | static inline u8 phy_port_from_route(u64 route, u8 depth) | |
188 | { | |
d1ff7024 MW |
189 | u8 link; |
190 | ||
191 | link = depth ? route >> ((depth - 1) * 8) : route; | |
192 | return tb_phy_port_from_link(link); | |
f67cf491 MW |
193 | } |
194 | ||
195 | static inline u8 dual_link_from_link(u8 link) | |
196 | { | |
197 | return link ? ((link - 1) ^ 0x01) + 1 : 0; | |
198 | } | |
199 | ||
200 | static inline u64 get_route(u32 route_hi, u32 route_lo) | |
201 | { | |
202 | return (u64)route_hi << 32 | route_lo; | |
203 | } | |
204 | ||
4bac471d RM |
205 | static inline u64 get_parent_route(u64 route) |
206 | { | |
207 | int depth = tb_route_length(route); | |
208 | return depth ? route & ~(0xffULL << (depth - 1) * TB_ROUTE_SHIFT) : 0; | |
209 | } | |
210 | ||
0d53827d MW |
211 | static int pci2cio_wait_completion(struct icm *icm, unsigned long timeout_msec) |
212 | { | |
213 | unsigned long end = jiffies + msecs_to_jiffies(timeout_msec); | |
214 | u32 cmd; | |
215 | ||
216 | do { | |
217 | pci_read_config_dword(icm->upstream_port, | |
218 | icm->vnd_cap + PCIE2CIO_CMD, &cmd); | |
219 | if (!(cmd & PCIE2CIO_CMD_START)) { | |
220 | if (cmd & PCIE2CIO_CMD_TIMEOUT) | |
221 | break; | |
222 | return 0; | |
223 | } | |
224 | ||
225 | msleep(50); | |
226 | } while (time_before(jiffies, end)); | |
227 | ||
228 | return -ETIMEDOUT; | |
229 | } | |
230 | ||
231 | static int pcie2cio_read(struct icm *icm, enum tb_cfg_space cs, | |
232 | unsigned int port, unsigned int index, u32 *data) | |
233 | { | |
234 | struct pci_dev *pdev = icm->upstream_port; | |
235 | int ret, vnd_cap = icm->vnd_cap; | |
236 | u32 cmd; | |
237 | ||
238 | cmd = index; | |
239 | cmd |= (port << PCIE2CIO_CMD_PORT_SHIFT) & PCIE2CIO_CMD_PORT_MASK; | |
240 | cmd |= (cs << PCIE2CIO_CMD_CS_SHIFT) & PCIE2CIO_CMD_CS_MASK; | |
241 | cmd |= PCIE2CIO_CMD_START; | |
242 | pci_write_config_dword(pdev, vnd_cap + PCIE2CIO_CMD, cmd); | |
243 | ||
244 | ret = pci2cio_wait_completion(icm, 5000); | |
245 | if (ret) | |
246 | return ret; | |
247 | ||
248 | pci_read_config_dword(pdev, vnd_cap + PCIE2CIO_RDDATA, data); | |
249 | return 0; | |
250 | } | |
251 | ||
252 | static int pcie2cio_write(struct icm *icm, enum tb_cfg_space cs, | |
253 | unsigned int port, unsigned int index, u32 data) | |
254 | { | |
255 | struct pci_dev *pdev = icm->upstream_port; | |
256 | int vnd_cap = icm->vnd_cap; | |
257 | u32 cmd; | |
258 | ||
259 | pci_write_config_dword(pdev, vnd_cap + PCIE2CIO_WRDATA, data); | |
260 | ||
261 | cmd = index; | |
262 | cmd |= (port << PCIE2CIO_CMD_PORT_SHIFT) & PCIE2CIO_CMD_PORT_MASK; | |
263 | cmd |= (cs << PCIE2CIO_CMD_CS_SHIFT) & PCIE2CIO_CMD_CS_MASK; | |
264 | cmd |= PCIE2CIO_CMD_WRITE | PCIE2CIO_CMD_START; | |
265 | pci_write_config_dword(pdev, vnd_cap + PCIE2CIO_CMD, cmd); | |
266 | ||
267 | return pci2cio_wait_completion(icm, 5000); | |
268 | } | |
269 | ||
f67cf491 MW |
270 | static bool icm_match(const struct tb_cfg_request *req, |
271 | const struct ctl_pkg *pkg) | |
272 | { | |
273 | const struct icm_pkg_header *res_hdr = pkg->buffer; | |
274 | const struct icm_pkg_header *req_hdr = req->request; | |
275 | ||
276 | if (pkg->frame.eof != req->response_type) | |
277 | return false; | |
278 | if (res_hdr->code != req_hdr->code) | |
279 | return false; | |
280 | ||
281 | return true; | |
282 | } | |
283 | ||
284 | static bool icm_copy(struct tb_cfg_request *req, const struct ctl_pkg *pkg) | |
285 | { | |
286 | const struct icm_pkg_header *hdr = pkg->buffer; | |
287 | ||
288 | if (hdr->packet_id < req->npackets) { | |
289 | size_t offset = hdr->packet_id * req->response_size; | |
290 | ||
291 | memcpy(req->response + offset, pkg->buffer, req->response_size); | |
292 | } | |
293 | ||
294 | return hdr->packet_id == hdr->total_packets - 1; | |
295 | } | |
296 | ||
297 | static int icm_request(struct tb *tb, const void *request, size_t request_size, | |
298 | void *response, size_t response_size, size_t npackets, | |
299 | unsigned int timeout_msec) | |
300 | { | |
301 | struct icm *icm = tb_priv(tb); | |
302 | int retries = 3; | |
303 | ||
304 | do { | |
305 | struct tb_cfg_request *req; | |
306 | struct tb_cfg_result res; | |
307 | ||
308 | req = tb_cfg_request_alloc(); | |
309 | if (!req) | |
310 | return -ENOMEM; | |
311 | ||
312 | req->match = icm_match; | |
313 | req->copy = icm_copy; | |
314 | req->request = request; | |
315 | req->request_size = request_size; | |
316 | req->request_type = TB_CFG_PKG_ICM_CMD; | |
317 | req->response = response; | |
318 | req->npackets = npackets; | |
319 | req->response_size = response_size; | |
320 | req->response_type = TB_CFG_PKG_ICM_RESP; | |
321 | ||
322 | mutex_lock(&icm->request_lock); | |
323 | res = tb_cfg_request_sync(tb->ctl, req, timeout_msec); | |
324 | mutex_unlock(&icm->request_lock); | |
325 | ||
326 | tb_cfg_request_put(req); | |
327 | ||
328 | if (res.err != -ETIMEDOUT) | |
329 | return res.err == 1 ? -EIO : res.err; | |
330 | ||
331 | usleep_range(20, 50); | |
332 | } while (retries--); | |
333 | ||
334 | return -ETIMEDOUT; | |
335 | } | |
336 | ||
3cdb9446 MW |
337 | /* |
338 | * If rescan is queued to run (we are resuming), postpone it to give the | |
339 | * firmware some more time to send device connected notifications for next | |
340 | * devices in the chain. | |
341 | */ | |
342 | static void icm_postpone_rescan(struct tb *tb) | |
343 | { | |
344 | struct icm *icm = tb_priv(tb); | |
345 | ||
346 | if (delayed_work_pending(&icm->rescan_work)) | |
347 | mod_delayed_work(tb->wq, &icm->rescan_work, | |
348 | msecs_to_jiffies(500)); | |
349 | } | |
350 | ||
351 | static void icm_veto_begin(struct tb *tb) | |
352 | { | |
353 | struct icm *icm = tb_priv(tb); | |
354 | ||
355 | if (!icm->veto) { | |
356 | icm->veto = true; | |
357 | /* Keep the domain powered while veto is in effect */ | |
358 | pm_runtime_get(&tb->dev); | |
359 | } | |
360 | } | |
361 | ||
362 | static void icm_veto_end(struct tb *tb) | |
363 | { | |
364 | struct icm *icm = tb_priv(tb); | |
365 | ||
366 | if (icm->veto) { | |
367 | icm->veto = false; | |
368 | /* Allow the domain suspend now */ | |
369 | pm_runtime_mark_last_busy(&tb->dev); | |
370 | pm_runtime_put_autosuspend(&tb->dev); | |
371 | } | |
372 | } | |
373 | ||
354a7a77 MW |
374 | static bool icm_firmware_running(const struct tb_nhi *nhi) |
375 | { | |
376 | u32 val; | |
377 | ||
378 | val = ioread32(nhi->iobase + REG_FW_STS); | |
379 | return !!(val & REG_FW_STS_ICM_EN); | |
380 | } | |
381 | ||
f67cf491 MW |
382 | static bool icm_fr_is_supported(struct tb *tb) |
383 | { | |
630b3aff | 384 | return !x86_apple_machine; |
f67cf491 MW |
385 | } |
386 | ||
387 | static inline int icm_fr_get_switch_index(u32 port) | |
388 | { | |
389 | int index; | |
390 | ||
391 | if ((port & ICM_PORT_TYPE_MASK) != TB_TYPE_PORT) | |
392 | return 0; | |
393 | ||
394 | index = port >> ICM_PORT_INDEX_SHIFT; | |
395 | return index != 0xff ? index : 0; | |
396 | } | |
397 | ||
398 | static int icm_fr_get_route(struct tb *tb, u8 link, u8 depth, u64 *route) | |
399 | { | |
400 | struct icm_fr_pkg_get_topology_response *switches, *sw; | |
401 | struct icm_fr_pkg_get_topology request = { | |
402 | .hdr = { .code = ICM_GET_TOPOLOGY }, | |
403 | }; | |
404 | size_t npackets = ICM_GET_TOPOLOGY_PACKETS; | |
405 | int ret, index; | |
406 | u8 i; | |
407 | ||
408 | switches = kcalloc(npackets, sizeof(*switches), GFP_KERNEL); | |
409 | if (!switches) | |
410 | return -ENOMEM; | |
411 | ||
412 | ret = icm_request(tb, &request, sizeof(request), switches, | |
413 | sizeof(*switches), npackets, ICM_TIMEOUT); | |
414 | if (ret) | |
415 | goto err_free; | |
416 | ||
417 | sw = &switches[0]; | |
418 | index = icm_fr_get_switch_index(sw->ports[link]); | |
419 | if (!index) { | |
420 | ret = -ENODEV; | |
421 | goto err_free; | |
422 | } | |
423 | ||
424 | sw = &switches[index]; | |
425 | for (i = 1; i < depth; i++) { | |
426 | unsigned int j; | |
427 | ||
428 | if (!(sw->first_data & ICM_SWITCH_USED)) { | |
429 | ret = -ENODEV; | |
430 | goto err_free; | |
431 | } | |
432 | ||
433 | for (j = 0; j < ARRAY_SIZE(sw->ports); j++) { | |
434 | index = icm_fr_get_switch_index(sw->ports[j]); | |
435 | if (index > sw->switch_index) { | |
436 | sw = &switches[index]; | |
437 | break; | |
438 | } | |
439 | } | |
440 | } | |
441 | ||
442 | *route = get_route(sw->route_hi, sw->route_lo); | |
443 | ||
444 | err_free: | |
445 | kfree(switches); | |
446 | return ret; | |
447 | } | |
448 | ||
d04522fa MW |
449 | static void icm_fr_save_devices(struct tb *tb) |
450 | { | |
451 | nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_SAVE_DEVS, 0); | |
452 | } | |
453 | ||
3080e197 | 454 | static int |
9aaa3b8b | 455 | icm_fr_driver_ready(struct tb *tb, enum tb_security_level *security_level, |
9039387e | 456 | u8 *proto_version, size_t *nboot_acl, bool *rpm) |
3080e197 MW |
457 | { |
458 | struct icm_fr_pkg_driver_ready_response reply; | |
459 | struct icm_pkg_driver_ready request = { | |
460 | .hdr.code = ICM_DRIVER_READY, | |
461 | }; | |
462 | int ret; | |
463 | ||
464 | memset(&reply, 0, sizeof(reply)); | |
465 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
466 | 1, ICM_TIMEOUT); | |
467 | if (ret) | |
468 | return ret; | |
469 | ||
470 | if (security_level) | |
471 | *security_level = reply.security_level & ICM_FR_SLEVEL_MASK; | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
f67cf491 MW |
476 | static int icm_fr_approve_switch(struct tb *tb, struct tb_switch *sw) |
477 | { | |
478 | struct icm_fr_pkg_approve_device request; | |
479 | struct icm_fr_pkg_approve_device reply; | |
480 | int ret; | |
481 | ||
482 | memset(&request, 0, sizeof(request)); | |
483 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
484 | request.hdr.code = ICM_APPROVE_DEVICE; | |
485 | request.connection_id = sw->connection_id; | |
486 | request.connection_key = sw->connection_key; | |
487 | ||
488 | memset(&reply, 0, sizeof(reply)); | |
489 | /* Use larger timeout as establishing tunnels can take some time */ | |
490 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
0b0a0bd0 | 491 | 1, ICM_APPROVE_TIMEOUT); |
f67cf491 MW |
492 | if (ret) |
493 | return ret; | |
494 | ||
495 | if (reply.hdr.flags & ICM_FLAGS_ERROR) { | |
496 | tb_warn(tb, "PCIe tunnel creation failed\n"); | |
497 | return -EIO; | |
498 | } | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | static int icm_fr_add_switch_key(struct tb *tb, struct tb_switch *sw) | |
504 | { | |
505 | struct icm_fr_pkg_add_device_key request; | |
506 | struct icm_fr_pkg_add_device_key_response reply; | |
507 | int ret; | |
508 | ||
509 | memset(&request, 0, sizeof(request)); | |
510 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
511 | request.hdr.code = ICM_ADD_DEVICE_KEY; | |
512 | request.connection_id = sw->connection_id; | |
513 | request.connection_key = sw->connection_key; | |
514 | memcpy(request.key, sw->key, TB_SWITCH_KEY_SIZE); | |
515 | ||
516 | memset(&reply, 0, sizeof(reply)); | |
517 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
518 | 1, ICM_TIMEOUT); | |
519 | if (ret) | |
520 | return ret; | |
521 | ||
522 | if (reply.hdr.flags & ICM_FLAGS_ERROR) { | |
523 | tb_warn(tb, "Adding key to switch failed\n"); | |
524 | return -EIO; | |
525 | } | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
530 | static int icm_fr_challenge_switch_key(struct tb *tb, struct tb_switch *sw, | |
531 | const u8 *challenge, u8 *response) | |
532 | { | |
533 | struct icm_fr_pkg_challenge_device request; | |
534 | struct icm_fr_pkg_challenge_device_response reply; | |
535 | int ret; | |
536 | ||
537 | memset(&request, 0, sizeof(request)); | |
538 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
539 | request.hdr.code = ICM_CHALLENGE_DEVICE; | |
540 | request.connection_id = sw->connection_id; | |
541 | request.connection_key = sw->connection_key; | |
542 | memcpy(request.challenge, challenge, TB_SWITCH_KEY_SIZE); | |
543 | ||
544 | memset(&reply, 0, sizeof(reply)); | |
545 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
546 | 1, ICM_TIMEOUT); | |
547 | if (ret) | |
548 | return ret; | |
549 | ||
550 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
551 | return -EKEYREJECTED; | |
552 | if (reply.hdr.flags & ICM_FLAGS_NO_KEY) | |
553 | return -ENOKEY; | |
554 | ||
555 | memcpy(response, reply.response, TB_SWITCH_KEY_SIZE); | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
180b0689 MW |
560 | static int icm_fr_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd, |
561 | int transmit_path, int transmit_ring, | |
562 | int receive_path, int receive_ring) | |
d1ff7024 MW |
563 | { |
564 | struct icm_fr_pkg_approve_xdomain_response reply; | |
565 | struct icm_fr_pkg_approve_xdomain request; | |
566 | int ret; | |
567 | ||
568 | memset(&request, 0, sizeof(request)); | |
569 | request.hdr.code = ICM_APPROVE_XDOMAIN; | |
570 | request.link_info = xd->depth << ICM_LINK_INFO_DEPTH_SHIFT | xd->link; | |
571 | memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid)); | |
572 | ||
180b0689 MW |
573 | request.transmit_path = transmit_path; |
574 | request.transmit_ring = transmit_ring; | |
575 | request.receive_path = receive_path; | |
576 | request.receive_ring = receive_ring; | |
d1ff7024 MW |
577 | |
578 | memset(&reply, 0, sizeof(reply)); | |
579 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
580 | 1, ICM_TIMEOUT); | |
581 | if (ret) | |
582 | return ret; | |
583 | ||
584 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
585 | return -EIO; | |
586 | ||
587 | return 0; | |
588 | } | |
589 | ||
180b0689 MW |
590 | static int icm_fr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd, |
591 | int transmit_path, int transmit_ring, | |
592 | int receive_path, int receive_ring) | |
d1ff7024 MW |
593 | { |
594 | u8 phy_port; | |
595 | u8 cmd; | |
596 | ||
597 | phy_port = tb_phy_port_from_link(xd->link); | |
598 | if (phy_port == 0) | |
599 | cmd = NHI_MAILBOX_DISCONNECT_PA; | |
600 | else | |
601 | cmd = NHI_MAILBOX_DISCONNECT_PB; | |
602 | ||
603 | nhi_mailbox_cmd(tb->nhi, cmd, 1); | |
604 | usleep_range(10, 50); | |
605 | nhi_mailbox_cmd(tb->nhi, cmd, 2); | |
606 | return 0; | |
607 | } | |
608 | ||
b5db76db MW |
609 | static struct tb_switch *alloc_switch(struct tb_switch *parent_sw, u64 route, |
610 | const uuid_t *uuid) | |
ee487dd2 | 611 | { |
b5db76db | 612 | struct tb *tb = parent_sw->tb; |
ee487dd2 | 613 | struct tb_switch *sw; |
2d8ff0b5 | 614 | |
b5db76db MW |
615 | sw = tb_switch_alloc(tb, &parent_sw->dev, route); |
616 | if (IS_ERR(sw)) { | |
617 | tb_warn(tb, "failed to allocate switch at %llx\n", route); | |
618 | return sw; | |
619 | } | |
ee487dd2 MW |
620 | |
621 | sw->uuid = kmemdup(uuid, sizeof(*uuid), GFP_KERNEL); | |
fd21b79e | 622 | if (!sw->uuid) { |
fd21b79e | 623 | tb_switch_put(sw); |
b5db76db | 624 | return ERR_PTR(-ENOMEM); |
fd21b79e | 625 | } |
b5db76db | 626 | |
4f7c2e0d | 627 | init_completion(&sw->rpm_complete); |
b5db76db MW |
628 | return sw; |
629 | } | |
ee487dd2 | 630 | |
b5db76db MW |
631 | static int add_switch(struct tb_switch *parent_sw, struct tb_switch *sw) |
632 | { | |
633 | u64 route = tb_route(sw); | |
634 | int ret; | |
2d8ff0b5 | 635 | |
ee487dd2 MW |
636 | /* Link the two switches now */ |
637 | tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw); | |
638 | tb_upstream_port(sw)->remote = tb_port_at(route, parent_sw); | |
639 | ||
3cdb9446 | 640 | ret = tb_switch_add(sw); |
b5db76db | 641 | if (ret) |
ee487dd2 | 642 | tb_port_at(tb_route(sw), parent_sw)->remote = NULL; |
3cdb9446 | 643 | |
b5db76db | 644 | return ret; |
ee487dd2 MW |
645 | } |
646 | ||
647 | static void update_switch(struct tb_switch *parent_sw, struct tb_switch *sw, | |
648 | u64 route, u8 connection_id, u8 connection_key, | |
14862ee3 | 649 | u8 link, u8 depth, bool boot) |
ee487dd2 MW |
650 | { |
651 | /* Disconnect from parent */ | |
652 | tb_port_at(tb_route(sw), parent_sw)->remote = NULL; | |
653 | /* Re-connect via updated port*/ | |
654 | tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw); | |
655 | ||
656 | /* Update with the new addressing information */ | |
657 | sw->config.route_hi = upper_32_bits(route); | |
658 | sw->config.route_lo = lower_32_bits(route); | |
659 | sw->connection_id = connection_id; | |
660 | sw->connection_key = connection_key; | |
661 | sw->link = link; | |
662 | sw->depth = depth; | |
14862ee3 | 663 | sw->boot = boot; |
ee487dd2 MW |
664 | |
665 | /* This switch still exists */ | |
666 | sw->is_unplugged = false; | |
4f7c2e0d MW |
667 | |
668 | /* Runtime resume is now complete */ | |
669 | complete(&sw->rpm_complete); | |
ee487dd2 MW |
670 | } |
671 | ||
f67cf491 MW |
672 | static void remove_switch(struct tb_switch *sw) |
673 | { | |
674 | struct tb_switch *parent_sw; | |
675 | ||
676 | parent_sw = tb_to_switch(sw->dev.parent); | |
677 | tb_port_at(tb_route(sw), parent_sw)->remote = NULL; | |
678 | tb_switch_remove(sw); | |
679 | } | |
680 | ||
ee487dd2 MW |
681 | static void add_xdomain(struct tb_switch *sw, u64 route, |
682 | const uuid_t *local_uuid, const uuid_t *remote_uuid, | |
683 | u8 link, u8 depth) | |
684 | { | |
685 | struct tb_xdomain *xd; | |
686 | ||
2d8ff0b5 MW |
687 | pm_runtime_get_sync(&sw->dev); |
688 | ||
ee487dd2 MW |
689 | xd = tb_xdomain_alloc(sw->tb, &sw->dev, route, local_uuid, remote_uuid); |
690 | if (!xd) | |
2d8ff0b5 | 691 | goto out; |
ee487dd2 MW |
692 | |
693 | xd->link = link; | |
694 | xd->depth = depth; | |
695 | ||
696 | tb_port_at(route, sw)->xdomain = xd; | |
697 | ||
698 | tb_xdomain_add(xd); | |
2d8ff0b5 MW |
699 | |
700 | out: | |
701 | pm_runtime_mark_last_busy(&sw->dev); | |
702 | pm_runtime_put_autosuspend(&sw->dev); | |
ee487dd2 MW |
703 | } |
704 | ||
705 | static void update_xdomain(struct tb_xdomain *xd, u64 route, u8 link) | |
706 | { | |
707 | xd->link = link; | |
708 | xd->route = route; | |
709 | xd->is_unplugged = false; | |
710 | } | |
711 | ||
79fae987 MW |
712 | static void remove_xdomain(struct tb_xdomain *xd) |
713 | { | |
714 | struct tb_switch *sw; | |
715 | ||
716 | sw = tb_to_switch(xd->dev.parent); | |
717 | tb_port_at(xd->route, sw)->xdomain = NULL; | |
718 | tb_xdomain_remove(xd); | |
719 | } | |
720 | ||
f67cf491 MW |
721 | static void |
722 | icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
723 | { | |
724 | const struct icm_fr_event_device_connected *pkg = | |
725 | (const struct icm_fr_event_device_connected *)hdr; | |
ee487dd2 | 726 | enum tb_security_level security_level; |
f67cf491 | 727 | struct tb_switch *sw, *parent_sw; |
91c0c120 | 728 | bool boot, dual_lane, speed_gen3; |
f67cf491 MW |
729 | struct icm *icm = tb_priv(tb); |
730 | bool authorized = false; | |
79fae987 | 731 | struct tb_xdomain *xd; |
f67cf491 MW |
732 | u8 link, depth; |
733 | u64 route; | |
734 | int ret; | |
735 | ||
3cdb9446 MW |
736 | icm_postpone_rescan(tb); |
737 | ||
f67cf491 MW |
738 | link = pkg->link_info & ICM_LINK_INFO_LINK_MASK; |
739 | depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >> | |
740 | ICM_LINK_INFO_DEPTH_SHIFT; | |
741 | authorized = pkg->link_info & ICM_LINK_INFO_APPROVED; | |
ee487dd2 MW |
742 | security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >> |
743 | ICM_FLAGS_SLEVEL_SHIFT; | |
14862ee3 | 744 | boot = pkg->link_info & ICM_LINK_INFO_BOOT; |
91c0c120 MW |
745 | dual_lane = pkg->hdr.flags & ICM_FLAGS_DUAL_LANE; |
746 | speed_gen3 = pkg->hdr.flags & ICM_FLAGS_SPEED_GEN3; | |
f67cf491 | 747 | |
cb653eec MW |
748 | if (pkg->link_info & ICM_LINK_INFO_REJECTED) { |
749 | tb_info(tb, "switch at %u.%u was rejected by ICM firmware because topology limit exceeded\n", | |
750 | link, depth); | |
751 | return; | |
752 | } | |
753 | ||
f67cf491 MW |
754 | sw = tb_switch_find_by_uuid(tb, &pkg->ep_uuid); |
755 | if (sw) { | |
756 | u8 phy_port, sw_phy_port; | |
757 | ||
758 | parent_sw = tb_to_switch(sw->dev.parent); | |
fdd92e89 MW |
759 | sw_phy_port = tb_phy_port_from_link(sw->link); |
760 | phy_port = tb_phy_port_from_link(link); | |
f67cf491 MW |
761 | |
762 | /* | |
763 | * On resume ICM will send us connected events for the | |
764 | * devices that still are present. However, that | |
765 | * information might have changed for example by the | |
766 | * fact that a switch on a dual-link connection might | |
767 | * have been enumerated using the other link now. Make | |
768 | * sure our book keeping matches that. | |
769 | */ | |
770 | if (sw->depth == depth && sw_phy_port == phy_port && | |
771 | !!sw->authorized == authorized) { | |
fdd92e89 MW |
772 | /* |
773 | * It was enumerated through another link so update | |
774 | * route string accordingly. | |
775 | */ | |
776 | if (sw->link != link) { | |
777 | ret = icm->get_route(tb, link, depth, &route); | |
778 | if (ret) { | |
779 | tb_err(tb, "failed to update route string for switch at %u.%u\n", | |
780 | link, depth); | |
781 | tb_switch_put(sw); | |
782 | return; | |
783 | } | |
784 | } else { | |
785 | route = tb_route(sw); | |
786 | } | |
787 | ||
ee487dd2 | 788 | update_switch(parent_sw, sw, route, pkg->connection_id, |
14862ee3 | 789 | pkg->connection_key, link, depth, boot); |
f67cf491 MW |
790 | tb_switch_put(sw); |
791 | return; | |
792 | } | |
793 | ||
794 | /* | |
795 | * User connected the same switch to another physical | |
796 | * port or to another part of the topology. Remove the | |
797 | * existing switch now before adding the new one. | |
798 | */ | |
799 | remove_switch(sw); | |
800 | tb_switch_put(sw); | |
801 | } | |
802 | ||
803 | /* | |
804 | * If the switch was not found by UUID, look for a switch on | |
805 | * same physical port (taking possible link aggregation into | |
806 | * account) and depth. If we found one it is definitely a stale | |
807 | * one so remove it first. | |
808 | */ | |
809 | sw = tb_switch_find_by_link_depth(tb, link, depth); | |
810 | if (!sw) { | |
811 | u8 dual_link; | |
812 | ||
813 | dual_link = dual_link_from_link(link); | |
814 | if (dual_link) | |
815 | sw = tb_switch_find_by_link_depth(tb, dual_link, depth); | |
816 | } | |
817 | if (sw) { | |
818 | remove_switch(sw); | |
819 | tb_switch_put(sw); | |
820 | } | |
821 | ||
79fae987 MW |
822 | /* Remove existing XDomain connection if found */ |
823 | xd = tb_xdomain_find_by_link_depth(tb, link, depth); | |
824 | if (xd) { | |
825 | remove_xdomain(xd); | |
826 | tb_xdomain_put(xd); | |
827 | } | |
828 | ||
f67cf491 MW |
829 | parent_sw = tb_switch_find_by_link_depth(tb, link, depth - 1); |
830 | if (!parent_sw) { | |
831 | tb_err(tb, "failed to find parent switch for %u.%u\n", | |
832 | link, depth); | |
833 | return; | |
834 | } | |
835 | ||
fdd92e89 MW |
836 | ret = icm->get_route(tb, link, depth, &route); |
837 | if (ret) { | |
838 | tb_err(tb, "failed to find route string for switch at %u.%u\n", | |
839 | link, depth); | |
840 | tb_switch_put(parent_sw); | |
841 | return; | |
842 | } | |
843 | ||
b5db76db MW |
844 | pm_runtime_get_sync(&parent_sw->dev); |
845 | ||
846 | sw = alloc_switch(parent_sw, route, &pkg->ep_uuid); | |
847 | if (!IS_ERR(sw)) { | |
848 | sw->connection_id = pkg->connection_id; | |
849 | sw->connection_key = pkg->connection_key; | |
850 | sw->link = link; | |
851 | sw->depth = depth; | |
852 | sw->authorized = authorized; | |
853 | sw->security_level = security_level; | |
854 | sw->boot = boot; | |
91c0c120 MW |
855 | sw->link_speed = speed_gen3 ? 20 : 10; |
856 | sw->link_width = dual_lane ? 2 : 1; | |
b5db76db MW |
857 | sw->rpm = intel_vss_is_rtd3(pkg->ep_name, sizeof(pkg->ep_name)); |
858 | ||
859 | if (add_switch(parent_sw, sw)) | |
860 | tb_switch_put(sw); | |
861 | } | |
862 | ||
863 | pm_runtime_mark_last_busy(&parent_sw->dev); | |
864 | pm_runtime_put_autosuspend(&parent_sw->dev); | |
f67cf491 | 865 | |
f67cf491 MW |
866 | tb_switch_put(parent_sw); |
867 | } | |
868 | ||
869 | static void | |
870 | icm_fr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr) | |
871 | { | |
872 | const struct icm_fr_event_device_disconnected *pkg = | |
873 | (const struct icm_fr_event_device_disconnected *)hdr; | |
874 | struct tb_switch *sw; | |
875 | u8 link, depth; | |
876 | ||
877 | link = pkg->link_info & ICM_LINK_INFO_LINK_MASK; | |
878 | depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >> | |
879 | ICM_LINK_INFO_DEPTH_SHIFT; | |
880 | ||
f0342e75 | 881 | if (link > ICM_MAX_LINK || depth > TB_SWITCH_MAX_DEPTH) { |
f67cf491 MW |
882 | tb_warn(tb, "invalid topology %u.%u, ignoring\n", link, depth); |
883 | return; | |
884 | } | |
885 | ||
886 | sw = tb_switch_find_by_link_depth(tb, link, depth); | |
887 | if (!sw) { | |
888 | tb_warn(tb, "no switch exists at %u.%u, ignoring\n", link, | |
889 | depth); | |
890 | return; | |
891 | } | |
892 | ||
b658eb9d MW |
893 | pm_runtime_get_sync(sw->dev.parent); |
894 | ||
f67cf491 | 895 | remove_switch(sw); |
b658eb9d MW |
896 | |
897 | pm_runtime_mark_last_busy(sw->dev.parent); | |
898 | pm_runtime_put_autosuspend(sw->dev.parent); | |
899 | ||
f67cf491 MW |
900 | tb_switch_put(sw); |
901 | } | |
902 | ||
d1ff7024 MW |
903 | static void |
904 | icm_fr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
905 | { | |
906 | const struct icm_fr_event_xdomain_connected *pkg = | |
907 | (const struct icm_fr_event_xdomain_connected *)hdr; | |
908 | struct tb_xdomain *xd; | |
909 | struct tb_switch *sw; | |
910 | u8 link, depth; | |
d1ff7024 MW |
911 | u64 route; |
912 | ||
d1ff7024 MW |
913 | link = pkg->link_info & ICM_LINK_INFO_LINK_MASK; |
914 | depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >> | |
915 | ICM_LINK_INFO_DEPTH_SHIFT; | |
d1ff7024 | 916 | |
f0342e75 | 917 | if (link > ICM_MAX_LINK || depth > TB_SWITCH_MAX_DEPTH) { |
d1ff7024 MW |
918 | tb_warn(tb, "invalid topology %u.%u, ignoring\n", link, depth); |
919 | return; | |
920 | } | |
921 | ||
922 | route = get_route(pkg->local_route_hi, pkg->local_route_lo); | |
923 | ||
924 | xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid); | |
925 | if (xd) { | |
926 | u8 xd_phy_port, phy_port; | |
927 | ||
928 | xd_phy_port = phy_port_from_route(xd->route, xd->depth); | |
929 | phy_port = phy_port_from_route(route, depth); | |
930 | ||
931 | if (xd->depth == depth && xd_phy_port == phy_port) { | |
ee487dd2 | 932 | update_xdomain(xd, route, link); |
d1ff7024 MW |
933 | tb_xdomain_put(xd); |
934 | return; | |
935 | } | |
936 | ||
937 | /* | |
938 | * If we find an existing XDomain connection remove it | |
939 | * now. We need to go through login handshake and | |
940 | * everything anyway to be able to re-establish the | |
941 | * connection. | |
942 | */ | |
943 | remove_xdomain(xd); | |
944 | tb_xdomain_put(xd); | |
945 | } | |
946 | ||
947 | /* | |
948 | * Look if there already exists an XDomain in the same place | |
949 | * than the new one and in that case remove it because it is | |
950 | * most likely another host that got disconnected. | |
951 | */ | |
952 | xd = tb_xdomain_find_by_link_depth(tb, link, depth); | |
953 | if (!xd) { | |
954 | u8 dual_link; | |
955 | ||
956 | dual_link = dual_link_from_link(link); | |
957 | if (dual_link) | |
958 | xd = tb_xdomain_find_by_link_depth(tb, dual_link, | |
959 | depth); | |
960 | } | |
961 | if (xd) { | |
962 | remove_xdomain(xd); | |
963 | tb_xdomain_put(xd); | |
964 | } | |
965 | ||
966 | /* | |
967 | * If the user disconnected a switch during suspend and | |
968 | * connected another host to the same port, remove the switch | |
969 | * first. | |
970 | */ | |
8f965efd MW |
971 | sw = tb_switch_find_by_route(tb, route); |
972 | if (sw) { | |
d1ff7024 | 973 | remove_switch(sw); |
8f965efd MW |
974 | tb_switch_put(sw); |
975 | } | |
d1ff7024 MW |
976 | |
977 | sw = tb_switch_find_by_link_depth(tb, link, depth); | |
978 | if (!sw) { | |
979 | tb_warn(tb, "no switch exists at %u.%u, ignoring\n", link, | |
980 | depth); | |
981 | return; | |
982 | } | |
983 | ||
ee487dd2 MW |
984 | add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, link, |
985 | depth); | |
d1ff7024 MW |
986 | tb_switch_put(sw); |
987 | } | |
988 | ||
989 | static void | |
990 | icm_fr_xdomain_disconnected(struct tb *tb, const struct icm_pkg_header *hdr) | |
991 | { | |
992 | const struct icm_fr_event_xdomain_disconnected *pkg = | |
993 | (const struct icm_fr_event_xdomain_disconnected *)hdr; | |
994 | struct tb_xdomain *xd; | |
995 | ||
996 | /* | |
997 | * If the connection is through one or multiple devices, the | |
998 | * XDomain device is removed along with them so it is fine if we | |
999 | * cannot find it here. | |
1000 | */ | |
1001 | xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid); | |
1002 | if (xd) { | |
1003 | remove_xdomain(xd); | |
1004 | tb_xdomain_put(xd); | |
1005 | } | |
1006 | } | |
1007 | ||
0d53827d MW |
1008 | static int icm_tr_cio_reset(struct tb *tb) |
1009 | { | |
1010 | return pcie2cio_write(tb_priv(tb), TB_CFG_SWITCH, 0, 0x777, BIT(1)); | |
1011 | } | |
1012 | ||
4bac471d RM |
1013 | static int |
1014 | icm_tr_driver_ready(struct tb *tb, enum tb_security_level *security_level, | |
9039387e | 1015 | u8 *proto_version, size_t *nboot_acl, bool *rpm) |
4bac471d RM |
1016 | { |
1017 | struct icm_tr_pkg_driver_ready_response reply; | |
1018 | struct icm_pkg_driver_ready request = { | |
1019 | .hdr.code = ICM_DRIVER_READY, | |
1020 | }; | |
1021 | int ret; | |
1022 | ||
1023 | memset(&reply, 0, sizeof(reply)); | |
1024 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1025 | 1, 20000); | |
1026 | if (ret) | |
1027 | return ret; | |
1028 | ||
1029 | if (security_level) | |
1030 | *security_level = reply.info & ICM_TR_INFO_SLEVEL_MASK; | |
9039387e MW |
1031 | if (proto_version) |
1032 | *proto_version = (reply.info & ICM_TR_INFO_PROTO_VERSION_MASK) >> | |
1033 | ICM_TR_INFO_PROTO_VERSION_SHIFT; | |
4bac471d RM |
1034 | if (nboot_acl) |
1035 | *nboot_acl = (reply.info & ICM_TR_INFO_BOOT_ACL_MASK) >> | |
1036 | ICM_TR_INFO_BOOT_ACL_SHIFT; | |
2d8ff0b5 MW |
1037 | if (rpm) |
1038 | *rpm = !!(reply.hdr.flags & ICM_TR_FLAGS_RTD3); | |
1039 | ||
4bac471d RM |
1040 | return 0; |
1041 | } | |
1042 | ||
1043 | static int icm_tr_approve_switch(struct tb *tb, struct tb_switch *sw) | |
1044 | { | |
1045 | struct icm_tr_pkg_approve_device request; | |
1046 | struct icm_tr_pkg_approve_device reply; | |
1047 | int ret; | |
1048 | ||
1049 | memset(&request, 0, sizeof(request)); | |
1050 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
1051 | request.hdr.code = ICM_APPROVE_DEVICE; | |
1052 | request.route_lo = sw->config.route_lo; | |
1053 | request.route_hi = sw->config.route_hi; | |
1054 | request.connection_id = sw->connection_id; | |
1055 | ||
1056 | memset(&reply, 0, sizeof(reply)); | |
1057 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1058 | 1, ICM_APPROVE_TIMEOUT); | |
1059 | if (ret) | |
1060 | return ret; | |
1061 | ||
1062 | if (reply.hdr.flags & ICM_FLAGS_ERROR) { | |
1063 | tb_warn(tb, "PCIe tunnel creation failed\n"); | |
1064 | return -EIO; | |
1065 | } | |
1066 | ||
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | static int icm_tr_add_switch_key(struct tb *tb, struct tb_switch *sw) | |
1071 | { | |
1072 | struct icm_tr_pkg_add_device_key_response reply; | |
1073 | struct icm_tr_pkg_add_device_key request; | |
1074 | int ret; | |
1075 | ||
1076 | memset(&request, 0, sizeof(request)); | |
1077 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
1078 | request.hdr.code = ICM_ADD_DEVICE_KEY; | |
1079 | request.route_lo = sw->config.route_lo; | |
1080 | request.route_hi = sw->config.route_hi; | |
1081 | request.connection_id = sw->connection_id; | |
1082 | memcpy(request.key, sw->key, TB_SWITCH_KEY_SIZE); | |
1083 | ||
1084 | memset(&reply, 0, sizeof(reply)); | |
1085 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1086 | 1, ICM_TIMEOUT); | |
1087 | if (ret) | |
1088 | return ret; | |
1089 | ||
1090 | if (reply.hdr.flags & ICM_FLAGS_ERROR) { | |
1091 | tb_warn(tb, "Adding key to switch failed\n"); | |
1092 | return -EIO; | |
1093 | } | |
1094 | ||
1095 | return 0; | |
1096 | } | |
1097 | ||
1098 | static int icm_tr_challenge_switch_key(struct tb *tb, struct tb_switch *sw, | |
1099 | const u8 *challenge, u8 *response) | |
1100 | { | |
1101 | struct icm_tr_pkg_challenge_device_response reply; | |
1102 | struct icm_tr_pkg_challenge_device request; | |
1103 | int ret; | |
1104 | ||
1105 | memset(&request, 0, sizeof(request)); | |
1106 | memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid)); | |
1107 | request.hdr.code = ICM_CHALLENGE_DEVICE; | |
1108 | request.route_lo = sw->config.route_lo; | |
1109 | request.route_hi = sw->config.route_hi; | |
1110 | request.connection_id = sw->connection_id; | |
1111 | memcpy(request.challenge, challenge, TB_SWITCH_KEY_SIZE); | |
1112 | ||
1113 | memset(&reply, 0, sizeof(reply)); | |
1114 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1115 | 1, ICM_TIMEOUT); | |
1116 | if (ret) | |
1117 | return ret; | |
1118 | ||
1119 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1120 | return -EKEYREJECTED; | |
1121 | if (reply.hdr.flags & ICM_FLAGS_NO_KEY) | |
1122 | return -ENOKEY; | |
1123 | ||
1124 | memcpy(response, reply.response, TB_SWITCH_KEY_SIZE); | |
1125 | ||
1126 | return 0; | |
1127 | } | |
1128 | ||
180b0689 MW |
1129 | static int icm_tr_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd, |
1130 | int transmit_path, int transmit_ring, | |
1131 | int receive_path, int receive_ring) | |
4bac471d RM |
1132 | { |
1133 | struct icm_tr_pkg_approve_xdomain_response reply; | |
1134 | struct icm_tr_pkg_approve_xdomain request; | |
1135 | int ret; | |
1136 | ||
1137 | memset(&request, 0, sizeof(request)); | |
1138 | request.hdr.code = ICM_APPROVE_XDOMAIN; | |
1139 | request.route_hi = upper_32_bits(xd->route); | |
1140 | request.route_lo = lower_32_bits(xd->route); | |
180b0689 MW |
1141 | request.transmit_path = transmit_path; |
1142 | request.transmit_ring = transmit_ring; | |
1143 | request.receive_path = receive_path; | |
1144 | request.receive_ring = receive_ring; | |
4bac471d RM |
1145 | memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid)); |
1146 | ||
1147 | memset(&reply, 0, sizeof(reply)); | |
1148 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1149 | 1, ICM_TIMEOUT); | |
1150 | if (ret) | |
1151 | return ret; | |
1152 | ||
1153 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1154 | return -EIO; | |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | ||
1159 | static int icm_tr_xdomain_tear_down(struct tb *tb, struct tb_xdomain *xd, | |
1160 | int stage) | |
1161 | { | |
1162 | struct icm_tr_pkg_disconnect_xdomain_response reply; | |
1163 | struct icm_tr_pkg_disconnect_xdomain request; | |
1164 | int ret; | |
1165 | ||
1166 | memset(&request, 0, sizeof(request)); | |
1167 | request.hdr.code = ICM_DISCONNECT_XDOMAIN; | |
1168 | request.stage = stage; | |
1169 | request.route_hi = upper_32_bits(xd->route); | |
1170 | request.route_lo = lower_32_bits(xd->route); | |
1171 | memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid)); | |
1172 | ||
1173 | memset(&reply, 0, sizeof(reply)); | |
1174 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1175 | 1, ICM_TIMEOUT); | |
1176 | if (ret) | |
1177 | return ret; | |
1178 | ||
1179 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1180 | return -EIO; | |
1181 | ||
1182 | return 0; | |
1183 | } | |
1184 | ||
180b0689 MW |
1185 | static int icm_tr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd, |
1186 | int transmit_path, int transmit_ring, | |
1187 | int receive_path, int receive_ring) | |
4bac471d RM |
1188 | { |
1189 | int ret; | |
1190 | ||
1191 | ret = icm_tr_xdomain_tear_down(tb, xd, 1); | |
1192 | if (ret) | |
1193 | return ret; | |
1194 | ||
1195 | usleep_range(10, 50); | |
1196 | return icm_tr_xdomain_tear_down(tb, xd, 2); | |
1197 | } | |
1198 | ||
1199 | static void | |
3cdb9446 MW |
1200 | __icm_tr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr, |
1201 | bool force_rtd3) | |
4bac471d RM |
1202 | { |
1203 | const struct icm_tr_event_device_connected *pkg = | |
1204 | (const struct icm_tr_event_device_connected *)hdr; | |
91c0c120 | 1205 | bool authorized, boot, dual_lane, speed_gen3; |
4bac471d RM |
1206 | enum tb_security_level security_level; |
1207 | struct tb_switch *sw, *parent_sw; | |
1208 | struct tb_xdomain *xd; | |
4bac471d RM |
1209 | u64 route; |
1210 | ||
3cdb9446 MW |
1211 | icm_postpone_rescan(tb); |
1212 | ||
4bac471d RM |
1213 | /* |
1214 | * Currently we don't use the QoS information coming with the | |
1215 | * device connected message so simply just ignore that extra | |
1216 | * packet for now. | |
1217 | */ | |
1218 | if (pkg->hdr.packet_id) | |
1219 | return; | |
1220 | ||
4bac471d RM |
1221 | route = get_route(pkg->route_hi, pkg->route_lo); |
1222 | authorized = pkg->link_info & ICM_LINK_INFO_APPROVED; | |
1223 | security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >> | |
1224 | ICM_FLAGS_SLEVEL_SHIFT; | |
1225 | boot = pkg->link_info & ICM_LINK_INFO_BOOT; | |
91c0c120 MW |
1226 | dual_lane = pkg->hdr.flags & ICM_FLAGS_DUAL_LANE; |
1227 | speed_gen3 = pkg->hdr.flags & ICM_FLAGS_SPEED_GEN3; | |
4bac471d RM |
1228 | |
1229 | if (pkg->link_info & ICM_LINK_INFO_REJECTED) { | |
1230 | tb_info(tb, "switch at %llx was rejected by ICM firmware because topology limit exceeded\n", | |
1231 | route); | |
1232 | return; | |
1233 | } | |
1234 | ||
1235 | sw = tb_switch_find_by_uuid(tb, &pkg->ep_uuid); | |
1236 | if (sw) { | |
1237 | /* Update the switch if it is still in the same place */ | |
1238 | if (tb_route(sw) == route && !!sw->authorized == authorized) { | |
1239 | parent_sw = tb_to_switch(sw->dev.parent); | |
1240 | update_switch(parent_sw, sw, route, pkg->connection_id, | |
1241 | 0, 0, 0, boot); | |
1242 | tb_switch_put(sw); | |
1243 | return; | |
1244 | } | |
1245 | ||
1246 | remove_switch(sw); | |
1247 | tb_switch_put(sw); | |
1248 | } | |
1249 | ||
1250 | /* Another switch with the same address */ | |
1251 | sw = tb_switch_find_by_route(tb, route); | |
1252 | if (sw) { | |
1253 | remove_switch(sw); | |
1254 | tb_switch_put(sw); | |
1255 | } | |
1256 | ||
1257 | /* XDomain connection with the same address */ | |
1258 | xd = tb_xdomain_find_by_route(tb, route); | |
1259 | if (xd) { | |
1260 | remove_xdomain(xd); | |
1261 | tb_xdomain_put(xd); | |
1262 | } | |
1263 | ||
1264 | parent_sw = tb_switch_find_by_route(tb, get_parent_route(route)); | |
1265 | if (!parent_sw) { | |
1266 | tb_err(tb, "failed to find parent switch for %llx\n", route); | |
1267 | return; | |
1268 | } | |
1269 | ||
b5db76db MW |
1270 | pm_runtime_get_sync(&parent_sw->dev); |
1271 | ||
1272 | sw = alloc_switch(parent_sw, route, &pkg->ep_uuid); | |
1273 | if (!IS_ERR(sw)) { | |
1274 | sw->connection_id = pkg->connection_id; | |
1275 | sw->authorized = authorized; | |
1276 | sw->security_level = security_level; | |
1277 | sw->boot = boot; | |
91c0c120 MW |
1278 | sw->link_speed = speed_gen3 ? 20 : 10; |
1279 | sw->link_width = dual_lane ? 2 : 1; | |
b5db76db MW |
1280 | sw->rpm = force_rtd3; |
1281 | if (!sw->rpm) | |
1282 | sw->rpm = intel_vss_is_rtd3(pkg->ep_name, | |
1283 | sizeof(pkg->ep_name)); | |
1284 | ||
1285 | if (add_switch(parent_sw, sw)) | |
1286 | tb_switch_put(sw); | |
1287 | } | |
1288 | ||
1289 | pm_runtime_mark_last_busy(&parent_sw->dev); | |
1290 | pm_runtime_put_autosuspend(&parent_sw->dev); | |
4bac471d RM |
1291 | |
1292 | tb_switch_put(parent_sw); | |
1293 | } | |
1294 | ||
3cdb9446 MW |
1295 | static void |
1296 | icm_tr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
1297 | { | |
1298 | __icm_tr_device_connected(tb, hdr, false); | |
1299 | } | |
1300 | ||
4bac471d RM |
1301 | static void |
1302 | icm_tr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr) | |
1303 | { | |
1304 | const struct icm_tr_event_device_disconnected *pkg = | |
1305 | (const struct icm_tr_event_device_disconnected *)hdr; | |
1306 | struct tb_switch *sw; | |
1307 | u64 route; | |
1308 | ||
1309 | route = get_route(pkg->route_hi, pkg->route_lo); | |
1310 | ||
1311 | sw = tb_switch_find_by_route(tb, route); | |
1312 | if (!sw) { | |
1313 | tb_warn(tb, "no switch exists at %llx, ignoring\n", route); | |
1314 | return; | |
1315 | } | |
b658eb9d | 1316 | pm_runtime_get_sync(sw->dev.parent); |
4bac471d RM |
1317 | |
1318 | remove_switch(sw); | |
b658eb9d MW |
1319 | |
1320 | pm_runtime_mark_last_busy(sw->dev.parent); | |
1321 | pm_runtime_put_autosuspend(sw->dev.parent); | |
1322 | ||
4bac471d RM |
1323 | tb_switch_put(sw); |
1324 | } | |
1325 | ||
1326 | static void | |
1327 | icm_tr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
1328 | { | |
1329 | const struct icm_tr_event_xdomain_connected *pkg = | |
1330 | (const struct icm_tr_event_xdomain_connected *)hdr; | |
1331 | struct tb_xdomain *xd; | |
1332 | struct tb_switch *sw; | |
1333 | u64 route; | |
1334 | ||
1335 | if (!tb->root_switch) | |
1336 | return; | |
1337 | ||
1338 | route = get_route(pkg->local_route_hi, pkg->local_route_lo); | |
1339 | ||
1340 | xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid); | |
1341 | if (xd) { | |
1342 | if (xd->route == route) { | |
1343 | update_xdomain(xd, route, 0); | |
1344 | tb_xdomain_put(xd); | |
1345 | return; | |
1346 | } | |
1347 | ||
1348 | remove_xdomain(xd); | |
1349 | tb_xdomain_put(xd); | |
1350 | } | |
1351 | ||
1352 | /* An existing xdomain with the same address */ | |
1353 | xd = tb_xdomain_find_by_route(tb, route); | |
1354 | if (xd) { | |
1355 | remove_xdomain(xd); | |
1356 | tb_xdomain_put(xd); | |
1357 | } | |
1358 | ||
1359 | /* | |
1360 | * If the user disconnected a switch during suspend and | |
1361 | * connected another host to the same port, remove the switch | |
1362 | * first. | |
1363 | */ | |
8f965efd MW |
1364 | sw = tb_switch_find_by_route(tb, route); |
1365 | if (sw) { | |
4bac471d | 1366 | remove_switch(sw); |
8f965efd MW |
1367 | tb_switch_put(sw); |
1368 | } | |
4bac471d RM |
1369 | |
1370 | sw = tb_switch_find_by_route(tb, get_parent_route(route)); | |
1371 | if (!sw) { | |
1372 | tb_warn(tb, "no switch exists at %llx, ignoring\n", route); | |
1373 | return; | |
1374 | } | |
1375 | ||
1376 | add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, 0, 0); | |
1377 | tb_switch_put(sw); | |
1378 | } | |
1379 | ||
1380 | static void | |
1381 | icm_tr_xdomain_disconnected(struct tb *tb, const struct icm_pkg_header *hdr) | |
1382 | { | |
1383 | const struct icm_tr_event_xdomain_disconnected *pkg = | |
1384 | (const struct icm_tr_event_xdomain_disconnected *)hdr; | |
1385 | struct tb_xdomain *xd; | |
1386 | u64 route; | |
1387 | ||
1388 | route = get_route(pkg->route_hi, pkg->route_lo); | |
1389 | ||
1390 | xd = tb_xdomain_find_by_route(tb, route); | |
1391 | if (xd) { | |
1392 | remove_xdomain(xd); | |
1393 | tb_xdomain_put(xd); | |
1394 | } | |
1395 | } | |
1396 | ||
f67cf491 MW |
1397 | static struct pci_dev *get_upstream_port(struct pci_dev *pdev) |
1398 | { | |
1399 | struct pci_dev *parent; | |
1400 | ||
1401 | parent = pci_upstream_bridge(pdev); | |
1402 | while (parent) { | |
1403 | if (!pci_is_pcie(parent)) | |
1404 | return NULL; | |
1405 | if (pci_pcie_type(parent) == PCI_EXP_TYPE_UPSTREAM) | |
1406 | break; | |
1407 | parent = pci_upstream_bridge(parent); | |
1408 | } | |
1409 | ||
1410 | if (!parent) | |
1411 | return NULL; | |
1412 | ||
1413 | switch (parent->device) { | |
1414 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_BRIDGE: | |
1415 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_BRIDGE: | |
1416 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE: | |
1417 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE: | |
1418 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE: | |
c4630d6a MW |
1419 | case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE: |
1420 | case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE: | |
f67cf491 MW |
1421 | return parent; |
1422 | } | |
1423 | ||
1424 | return NULL; | |
1425 | } | |
1426 | ||
1427 | static bool icm_ar_is_supported(struct tb *tb) | |
1428 | { | |
1429 | struct pci_dev *upstream_port; | |
1430 | struct icm *icm = tb_priv(tb); | |
1431 | ||
1432 | /* | |
1433 | * Starting from Alpine Ridge we can use ICM on Apple machines | |
1434 | * as well. We just need to reset and re-enable it first. | |
354a7a77 | 1435 | * However, only start it if explicitly asked by the user. |
f67cf491 | 1436 | */ |
354a7a77 | 1437 | if (icm_firmware_running(tb->nhi)) |
f67cf491 | 1438 | return true; |
354a7a77 MW |
1439 | if (!start_icm) |
1440 | return false; | |
f67cf491 MW |
1441 | |
1442 | /* | |
1443 | * Find the upstream PCIe port in case we need to do reset | |
1444 | * through its vendor specific registers. | |
1445 | */ | |
1446 | upstream_port = get_upstream_port(tb->nhi->pdev); | |
1447 | if (upstream_port) { | |
1448 | int cap; | |
1449 | ||
1450 | cap = pci_find_ext_capability(upstream_port, | |
1451 | PCI_EXT_CAP_ID_VNDR); | |
1452 | if (cap > 0) { | |
1453 | icm->upstream_port = upstream_port; | |
1454 | icm->vnd_cap = cap; | |
1455 | ||
1456 | return true; | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | return false; | |
1461 | } | |
1462 | ||
0d53827d MW |
1463 | static int icm_ar_cio_reset(struct tb *tb) |
1464 | { | |
1465 | return pcie2cio_write(tb_priv(tb), TB_CFG_SWITCH, 0, 0x50, BIT(9)); | |
1466 | } | |
1467 | ||
f67cf491 MW |
1468 | static int icm_ar_get_mode(struct tb *tb) |
1469 | { | |
1470 | struct tb_nhi *nhi = tb->nhi; | |
e4be8c9b | 1471 | int retries = 60; |
f67cf491 MW |
1472 | u32 val; |
1473 | ||
1474 | do { | |
1475 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1476 | if (val & REG_FW_STS_NVM_AUTH_DONE) | |
1477 | break; | |
e4be8c9b | 1478 | msleep(50); |
f67cf491 MW |
1479 | } while (--retries); |
1480 | ||
1481 | if (!retries) { | |
1482 | dev_err(&nhi->pdev->dev, "ICM firmware not authenticated\n"); | |
1483 | return -ENODEV; | |
1484 | } | |
1485 | ||
1486 | return nhi_mailbox_mode(nhi); | |
1487 | } | |
1488 | ||
9aaa3b8b MW |
1489 | static int |
1490 | icm_ar_driver_ready(struct tb *tb, enum tb_security_level *security_level, | |
9039387e | 1491 | u8 *proto_version, size_t *nboot_acl, bool *rpm) |
9aaa3b8b MW |
1492 | { |
1493 | struct icm_ar_pkg_driver_ready_response reply; | |
1494 | struct icm_pkg_driver_ready request = { | |
1495 | .hdr.code = ICM_DRIVER_READY, | |
1496 | }; | |
1497 | int ret; | |
1498 | ||
1499 | memset(&reply, 0, sizeof(reply)); | |
1500 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1501 | 1, ICM_TIMEOUT); | |
1502 | if (ret) | |
1503 | return ret; | |
1504 | ||
1505 | if (security_level) | |
1506 | *security_level = reply.info & ICM_AR_INFO_SLEVEL_MASK; | |
1507 | if (nboot_acl && (reply.info & ICM_AR_INFO_BOOT_ACL_SUPPORTED)) | |
1508 | *nboot_acl = (reply.info & ICM_AR_INFO_BOOT_ACL_MASK) >> | |
1509 | ICM_AR_INFO_BOOT_ACL_SHIFT; | |
2d8ff0b5 MW |
1510 | if (rpm) |
1511 | *rpm = !!(reply.hdr.flags & ICM_AR_FLAGS_RTD3); | |
1512 | ||
9aaa3b8b MW |
1513 | return 0; |
1514 | } | |
1515 | ||
f67cf491 MW |
1516 | static int icm_ar_get_route(struct tb *tb, u8 link, u8 depth, u64 *route) |
1517 | { | |
1518 | struct icm_ar_pkg_get_route_response reply; | |
1519 | struct icm_ar_pkg_get_route request = { | |
1520 | .hdr = { .code = ICM_GET_ROUTE }, | |
1521 | .link_info = depth << ICM_LINK_INFO_DEPTH_SHIFT | link, | |
1522 | }; | |
1523 | int ret; | |
1524 | ||
1525 | memset(&reply, 0, sizeof(reply)); | |
1526 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1527 | 1, ICM_TIMEOUT); | |
1528 | if (ret) | |
1529 | return ret; | |
1530 | ||
1531 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1532 | return -EIO; | |
1533 | ||
1534 | *route = get_route(reply.route_hi, reply.route_lo); | |
1535 | return 0; | |
1536 | } | |
1537 | ||
9aaa3b8b MW |
1538 | static int icm_ar_get_boot_acl(struct tb *tb, uuid_t *uuids, size_t nuuids) |
1539 | { | |
1540 | struct icm_ar_pkg_preboot_acl_response reply; | |
1541 | struct icm_ar_pkg_preboot_acl request = { | |
1542 | .hdr = { .code = ICM_PREBOOT_ACL }, | |
1543 | }; | |
1544 | int ret, i; | |
1545 | ||
1546 | memset(&reply, 0, sizeof(reply)); | |
1547 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1548 | 1, ICM_TIMEOUT); | |
1549 | if (ret) | |
1550 | return ret; | |
1551 | ||
1552 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1553 | return -EIO; | |
1554 | ||
1555 | for (i = 0; i < nuuids; i++) { | |
1556 | u32 *uuid = (u32 *)&uuids[i]; | |
1557 | ||
1558 | uuid[0] = reply.acl[i].uuid_lo; | |
1559 | uuid[1] = reply.acl[i].uuid_hi; | |
1560 | ||
1561 | if (uuid[0] == 0xffffffff && uuid[1] == 0xffffffff) { | |
1562 | /* Map empty entries to null UUID */ | |
1563 | uuid[0] = 0; | |
1564 | uuid[1] = 0; | |
dd010bd7 | 1565 | } else if (uuid[0] != 0 || uuid[1] != 0) { |
9aaa3b8b MW |
1566 | /* Upper two DWs are always one's */ |
1567 | uuid[2] = 0xffffffff; | |
1568 | uuid[3] = 0xffffffff; | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | return ret; | |
1573 | } | |
1574 | ||
1575 | static int icm_ar_set_boot_acl(struct tb *tb, const uuid_t *uuids, | |
1576 | size_t nuuids) | |
1577 | { | |
1578 | struct icm_ar_pkg_preboot_acl_response reply; | |
1579 | struct icm_ar_pkg_preboot_acl request = { | |
1580 | .hdr = { | |
1581 | .code = ICM_PREBOOT_ACL, | |
1582 | .flags = ICM_FLAGS_WRITE, | |
1583 | }, | |
1584 | }; | |
1585 | int ret, i; | |
1586 | ||
1587 | for (i = 0; i < nuuids; i++) { | |
1588 | const u32 *uuid = (const u32 *)&uuids[i]; | |
1589 | ||
1590 | if (uuid_is_null(&uuids[i])) { | |
1591 | /* | |
1592 | * Map null UUID to the empty (all one) entries | |
1593 | * for ICM. | |
1594 | */ | |
1595 | request.acl[i].uuid_lo = 0xffffffff; | |
1596 | request.acl[i].uuid_hi = 0xffffffff; | |
1597 | } else { | |
1598 | /* Two high DWs need to be set to all one */ | |
1599 | if (uuid[2] != 0xffffffff || uuid[3] != 0xffffffff) | |
1600 | return -EINVAL; | |
1601 | ||
1602 | request.acl[i].uuid_lo = uuid[0]; | |
1603 | request.acl[i].uuid_hi = uuid[1]; | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | memset(&reply, 0, sizeof(reply)); | |
1608 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1609 | 1, ICM_TIMEOUT); | |
1610 | if (ret) | |
1611 | return ret; | |
1612 | ||
1613 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
1614 | return -EIO; | |
1615 | ||
1616 | return 0; | |
1617 | } | |
1618 | ||
3cdb9446 MW |
1619 | static int |
1620 | icm_icl_driver_ready(struct tb *tb, enum tb_security_level *security_level, | |
9039387e | 1621 | u8 *proto_version, size_t *nboot_acl, bool *rpm) |
3cdb9446 MW |
1622 | { |
1623 | struct icm_tr_pkg_driver_ready_response reply; | |
1624 | struct icm_pkg_driver_ready request = { | |
1625 | .hdr.code = ICM_DRIVER_READY, | |
1626 | }; | |
1627 | int ret; | |
1628 | ||
1629 | memset(&reply, 0, sizeof(reply)); | |
1630 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
1631 | 1, 20000); | |
1632 | if (ret) | |
1633 | return ret; | |
1634 | ||
9039387e MW |
1635 | if (proto_version) |
1636 | *proto_version = (reply.info & ICM_TR_INFO_PROTO_VERSION_MASK) >> | |
1637 | ICM_TR_INFO_PROTO_VERSION_SHIFT; | |
1638 | ||
3cdb9446 MW |
1639 | /* Ice Lake always supports RTD3 */ |
1640 | if (rpm) | |
1641 | *rpm = true; | |
1642 | ||
1643 | return 0; | |
1644 | } | |
1645 | ||
1646 | static void icm_icl_set_uuid(struct tb *tb) | |
1647 | { | |
1648 | struct tb_nhi *nhi = tb->nhi; | |
1649 | u32 uuid[4]; | |
1650 | ||
1651 | pci_read_config_dword(nhi->pdev, VS_CAP_10, &uuid[0]); | |
1652 | pci_read_config_dword(nhi->pdev, VS_CAP_11, &uuid[1]); | |
1653 | uuid[2] = 0xffffffff; | |
1654 | uuid[3] = 0xffffffff; | |
1655 | ||
1656 | tb->root_switch->uuid = kmemdup(uuid, sizeof(uuid), GFP_KERNEL); | |
1657 | } | |
1658 | ||
1659 | static void | |
1660 | icm_icl_device_connected(struct tb *tb, const struct icm_pkg_header *hdr) | |
1661 | { | |
1662 | __icm_tr_device_connected(tb, hdr, true); | |
1663 | } | |
1664 | ||
1665 | static void icm_icl_rtd3_veto(struct tb *tb, const struct icm_pkg_header *hdr) | |
1666 | { | |
1667 | const struct icm_icl_event_rtd3_veto *pkg = | |
1668 | (const struct icm_icl_event_rtd3_veto *)hdr; | |
1669 | ||
1670 | tb_dbg(tb, "ICM rtd3 veto=0x%08x\n", pkg->veto_reason); | |
1671 | ||
1672 | if (pkg->veto_reason) | |
1673 | icm_veto_begin(tb); | |
1674 | else | |
1675 | icm_veto_end(tb); | |
1676 | } | |
1677 | ||
57d8df68 MW |
1678 | static bool icm_tgl_is_supported(struct tb *tb) |
1679 | { | |
0172e411 | 1680 | unsigned long end = jiffies + msecs_to_jiffies(10); |
49f2a7f4 | 1681 | |
0172e411 GF |
1682 | do { |
1683 | u32 val; | |
1684 | ||
1685 | val = ioread32(tb->nhi->iobase + REG_FW_STS); | |
1686 | if (val & REG_FW_STS_NVM_AUTH_DONE) | |
1687 | return true; | |
1688 | usleep_range(100, 500); | |
1689 | } while (time_before(jiffies, end)); | |
1690 | ||
1691 | return false; | |
57d8df68 MW |
1692 | } |
1693 | ||
f67cf491 MW |
1694 | static void icm_handle_notification(struct work_struct *work) |
1695 | { | |
1696 | struct icm_notification *n = container_of(work, typeof(*n), work); | |
1697 | struct tb *tb = n->tb; | |
1698 | struct icm *icm = tb_priv(tb); | |
1699 | ||
1700 | mutex_lock(&tb->lock); | |
1701 | ||
86da809d MW |
1702 | /* |
1703 | * When the domain is stopped we flush its workqueue but before | |
1704 | * that the root switch is removed. In that case we should treat | |
1705 | * the queued events as being canceled. | |
1706 | */ | |
1707 | if (tb->root_switch) { | |
1708 | switch (n->pkg->code) { | |
1709 | case ICM_EVENT_DEVICE_CONNECTED: | |
1710 | icm->device_connected(tb, n->pkg); | |
1711 | break; | |
1712 | case ICM_EVENT_DEVICE_DISCONNECTED: | |
1713 | icm->device_disconnected(tb, n->pkg); | |
1714 | break; | |
1715 | case ICM_EVENT_XDOMAIN_CONNECTED: | |
5ca67688 MW |
1716 | if (tb_is_xdomain_enabled()) |
1717 | icm->xdomain_connected(tb, n->pkg); | |
86da809d MW |
1718 | break; |
1719 | case ICM_EVENT_XDOMAIN_DISCONNECTED: | |
5ca67688 MW |
1720 | if (tb_is_xdomain_enabled()) |
1721 | icm->xdomain_disconnected(tb, n->pkg); | |
86da809d | 1722 | break; |
3cdb9446 MW |
1723 | case ICM_EVENT_RTD3_VETO: |
1724 | icm->rtd3_veto(tb, n->pkg); | |
1725 | break; | |
86da809d | 1726 | } |
f67cf491 MW |
1727 | } |
1728 | ||
1729 | mutex_unlock(&tb->lock); | |
1730 | ||
1731 | kfree(n->pkg); | |
1732 | kfree(n); | |
1733 | } | |
1734 | ||
1735 | static void icm_handle_event(struct tb *tb, enum tb_cfg_pkg_type type, | |
1736 | const void *buf, size_t size) | |
1737 | { | |
1738 | struct icm_notification *n; | |
1739 | ||
1740 | n = kmalloc(sizeof(*n), GFP_KERNEL); | |
1741 | if (!n) | |
1742 | return; | |
1743 | ||
1744 | INIT_WORK(&n->work, icm_handle_notification); | |
1745 | n->pkg = kmemdup(buf, size, GFP_KERNEL); | |
1746 | n->tb = tb; | |
1747 | ||
1748 | queue_work(tb->wq, &n->work); | |
1749 | } | |
1750 | ||
1751 | static int | |
9aaa3b8b | 1752 | __icm_driver_ready(struct tb *tb, enum tb_security_level *security_level, |
9039387e | 1753 | u8 *proto_version, size_t *nboot_acl, bool *rpm) |
f67cf491 | 1754 | { |
3080e197 | 1755 | struct icm *icm = tb_priv(tb); |
44b51bbb | 1756 | unsigned int retries = 50; |
f67cf491 MW |
1757 | int ret; |
1758 | ||
9039387e MW |
1759 | ret = icm->driver_ready(tb, security_level, proto_version, nboot_acl, |
1760 | rpm); | |
3080e197 MW |
1761 | if (ret) { |
1762 | tb_err(tb, "failed to send driver ready to ICM\n"); | |
f67cf491 | 1763 | return ret; |
3080e197 | 1764 | } |
f67cf491 MW |
1765 | |
1766 | /* | |
1767 | * Hold on here until the switch config space is accessible so | |
1768 | * that we can read root switch config successfully. | |
1769 | */ | |
1770 | do { | |
1771 | struct tb_cfg_result res; | |
1772 | u32 tmp; | |
1773 | ||
1774 | res = tb_cfg_read_raw(tb->ctl, &tmp, 0, 0, TB_CFG_SWITCH, | |
1775 | 0, 1, 100); | |
1776 | if (!res.err) | |
1777 | return 0; | |
1778 | ||
1779 | msleep(50); | |
1780 | } while (--retries); | |
1781 | ||
44b51bbb | 1782 | tb_err(tb, "failed to read root switch config space, giving up\n"); |
f67cf491 MW |
1783 | return -ETIMEDOUT; |
1784 | } | |
1785 | ||
f67cf491 MW |
1786 | static int icm_firmware_reset(struct tb *tb, struct tb_nhi *nhi) |
1787 | { | |
1788 | struct icm *icm = tb_priv(tb); | |
1789 | u32 val; | |
1790 | ||
ea9d7bb7 MW |
1791 | if (!icm->upstream_port) |
1792 | return -ENODEV; | |
1793 | ||
f67cf491 MW |
1794 | /* Put ARC to wait for CIO reset event to happen */ |
1795 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1796 | val |= REG_FW_STS_CIO_RESET_REQ; | |
1797 | iowrite32(val, nhi->iobase + REG_FW_STS); | |
1798 | ||
1799 | /* Re-start ARC */ | |
1800 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1801 | val |= REG_FW_STS_ICM_EN_INVERT; | |
1802 | val |= REG_FW_STS_ICM_EN_CPU; | |
1803 | iowrite32(val, nhi->iobase + REG_FW_STS); | |
1804 | ||
1805 | /* Trigger CIO reset now */ | |
0d53827d | 1806 | return icm->cio_reset(tb); |
f67cf491 MW |
1807 | } |
1808 | ||
1809 | static int icm_firmware_start(struct tb *tb, struct tb_nhi *nhi) | |
1810 | { | |
1811 | unsigned int retries = 10; | |
1812 | int ret; | |
1813 | u32 val; | |
1814 | ||
1815 | /* Check if the ICM firmware is already running */ | |
354a7a77 | 1816 | if (icm_firmware_running(nhi)) |
f67cf491 MW |
1817 | return 0; |
1818 | ||
62efe699 | 1819 | dev_dbg(&nhi->pdev->dev, "starting ICM firmware\n"); |
f67cf491 MW |
1820 | |
1821 | ret = icm_firmware_reset(tb, nhi); | |
1822 | if (ret) | |
1823 | return ret; | |
1824 | ||
1825 | /* Wait until the ICM firmware tells us it is up and running */ | |
1826 | do { | |
1827 | /* Check that the ICM firmware is running */ | |
1828 | val = ioread32(nhi->iobase + REG_FW_STS); | |
1829 | if (val & REG_FW_STS_NVM_AUTH_DONE) | |
1830 | return 0; | |
1831 | ||
1832 | msleep(300); | |
1833 | } while (--retries); | |
1834 | ||
1835 | return -ETIMEDOUT; | |
1836 | } | |
1837 | ||
1838 | static int icm_reset_phy_port(struct tb *tb, int phy_port) | |
1839 | { | |
1840 | struct icm *icm = tb_priv(tb); | |
1841 | u32 state0, state1; | |
1842 | int port0, port1; | |
1843 | u32 val0, val1; | |
1844 | int ret; | |
1845 | ||
1846 | if (!icm->upstream_port) | |
1847 | return 0; | |
1848 | ||
1849 | if (phy_port) { | |
1850 | port0 = 3; | |
1851 | port1 = 4; | |
1852 | } else { | |
1853 | port0 = 1; | |
1854 | port1 = 2; | |
1855 | } | |
1856 | ||
1857 | /* | |
1858 | * Read link status of both null ports belonging to a single | |
1859 | * physical port. | |
1860 | */ | |
1861 | ret = pcie2cio_read(icm, TB_CFG_PORT, port0, PHY_PORT_CS1, &val0); | |
1862 | if (ret) | |
1863 | return ret; | |
1864 | ret = pcie2cio_read(icm, TB_CFG_PORT, port1, PHY_PORT_CS1, &val1); | |
1865 | if (ret) | |
1866 | return ret; | |
1867 | ||
1868 | state0 = val0 & PHY_PORT_CS1_LINK_STATE_MASK; | |
1869 | state0 >>= PHY_PORT_CS1_LINK_STATE_SHIFT; | |
1870 | state1 = val1 & PHY_PORT_CS1_LINK_STATE_MASK; | |
1871 | state1 >>= PHY_PORT_CS1_LINK_STATE_SHIFT; | |
1872 | ||
1873 | /* If they are both up we need to reset them now */ | |
1874 | if (state0 != TB_PORT_UP || state1 != TB_PORT_UP) | |
1875 | return 0; | |
1876 | ||
1877 | val0 |= PHY_PORT_CS1_LINK_DISABLE; | |
1878 | ret = pcie2cio_write(icm, TB_CFG_PORT, port0, PHY_PORT_CS1, val0); | |
1879 | if (ret) | |
1880 | return ret; | |
1881 | ||
1882 | val1 |= PHY_PORT_CS1_LINK_DISABLE; | |
1883 | ret = pcie2cio_write(icm, TB_CFG_PORT, port1, PHY_PORT_CS1, val1); | |
1884 | if (ret) | |
1885 | return ret; | |
1886 | ||
1887 | /* Wait a bit and then re-enable both ports */ | |
1888 | usleep_range(10, 100); | |
1889 | ||
1890 | ret = pcie2cio_read(icm, TB_CFG_PORT, port0, PHY_PORT_CS1, &val0); | |
1891 | if (ret) | |
1892 | return ret; | |
1893 | ret = pcie2cio_read(icm, TB_CFG_PORT, port1, PHY_PORT_CS1, &val1); | |
1894 | if (ret) | |
1895 | return ret; | |
1896 | ||
1897 | val0 &= ~PHY_PORT_CS1_LINK_DISABLE; | |
1898 | ret = pcie2cio_write(icm, TB_CFG_PORT, port0, PHY_PORT_CS1, val0); | |
1899 | if (ret) | |
1900 | return ret; | |
1901 | ||
1902 | val1 &= ~PHY_PORT_CS1_LINK_DISABLE; | |
1903 | return pcie2cio_write(icm, TB_CFG_PORT, port1, PHY_PORT_CS1, val1); | |
1904 | } | |
1905 | ||
1906 | static int icm_firmware_init(struct tb *tb) | |
1907 | { | |
1908 | struct icm *icm = tb_priv(tb); | |
1909 | struct tb_nhi *nhi = tb->nhi; | |
1910 | int ret; | |
1911 | ||
1912 | ret = icm_firmware_start(tb, nhi); | |
1913 | if (ret) { | |
1914 | dev_err(&nhi->pdev->dev, "could not start ICM firmware\n"); | |
1915 | return ret; | |
1916 | } | |
1917 | ||
1918 | if (icm->get_mode) { | |
1919 | ret = icm->get_mode(tb); | |
1920 | ||
1921 | switch (ret) { | |
e6b245cc MW |
1922 | case NHI_FW_SAFE_MODE: |
1923 | icm->safe_mode = true; | |
1924 | break; | |
1925 | ||
f67cf491 MW |
1926 | case NHI_FW_CM_MODE: |
1927 | /* Ask ICM to accept all Thunderbolt devices */ | |
1928 | nhi_mailbox_cmd(nhi, NHI_MAILBOX_ALLOW_ALL_DEVS, 0); | |
1929 | break; | |
1930 | ||
1931 | default: | |
e4be8c9b MW |
1932 | if (ret < 0) |
1933 | return ret; | |
1934 | ||
f67cf491 MW |
1935 | tb_err(tb, "ICM firmware is in wrong mode: %u\n", ret); |
1936 | return -ENODEV; | |
1937 | } | |
1938 | } | |
1939 | ||
1940 | /* | |
1941 | * Reset both physical ports if there is anything connected to | |
1942 | * them already. | |
1943 | */ | |
1944 | ret = icm_reset_phy_port(tb, 0); | |
1945 | if (ret) | |
1946 | dev_warn(&nhi->pdev->dev, "failed to reset links on port0\n"); | |
1947 | ret = icm_reset_phy_port(tb, 1); | |
1948 | if (ret) | |
1949 | dev_warn(&nhi->pdev->dev, "failed to reset links on port1\n"); | |
1950 | ||
1951 | return 0; | |
1952 | } | |
1953 | ||
1954 | static int icm_driver_ready(struct tb *tb) | |
1955 | { | |
e6b245cc | 1956 | struct icm *icm = tb_priv(tb); |
f67cf491 MW |
1957 | int ret; |
1958 | ||
1959 | ret = icm_firmware_init(tb); | |
1960 | if (ret) | |
1961 | return ret; | |
1962 | ||
e6b245cc MW |
1963 | if (icm->safe_mode) { |
1964 | tb_info(tb, "Thunderbolt host controller is in safe mode.\n"); | |
1965 | tb_info(tb, "You need to update NVM firmware of the controller before it can be used.\n"); | |
1966 | tb_info(tb, "For latest updates check https://thunderbolttechnology.net/updates.\n"); | |
1967 | return 0; | |
1968 | } | |
1969 | ||
9039387e MW |
1970 | ret = __icm_driver_ready(tb, &tb->security_level, &icm->proto_version, |
1971 | &tb->nboot_acl, &icm->rpm); | |
9aaa3b8b MW |
1972 | if (ret) |
1973 | return ret; | |
1974 | ||
1975 | /* | |
1976 | * Make sure the number of supported preboot ACL matches what we | |
1977 | * expect or disable the whole feature. | |
1978 | */ | |
1979 | if (tb->nboot_acl > icm->max_boot_acl) | |
1980 | tb->nboot_acl = 0; | |
1981 | ||
9039387e MW |
1982 | if (icm->proto_version >= 3) |
1983 | tb_dbg(tb, "USB4 proxy operations supported\n"); | |
1984 | ||
9aaa3b8b | 1985 | return 0; |
f67cf491 MW |
1986 | } |
1987 | ||
1988 | static int icm_suspend(struct tb *tb) | |
1989 | { | |
d04522fa | 1990 | struct icm *icm = tb_priv(tb); |
a684c5b1 | 1991 | |
d04522fa MW |
1992 | if (icm->save_devices) |
1993 | icm->save_devices(tb); | |
a684c5b1 | 1994 | |
d04522fa | 1995 | nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DRV_UNLOADS, 0); |
a684c5b1 | 1996 | return 0; |
f67cf491 MW |
1997 | } |
1998 | ||
1999 | /* | |
2000 | * Mark all switches (except root switch) below this one unplugged. ICM | |
2001 | * firmware will send us an updated list of switches after we have send | |
2002 | * it driver ready command. If a switch is not in that list it will be | |
2003 | * removed when we perform rescan. | |
2004 | */ | |
2005 | static void icm_unplug_children(struct tb_switch *sw) | |
2006 | { | |
b433d010 | 2007 | struct tb_port *port; |
f67cf491 MW |
2008 | |
2009 | if (tb_route(sw)) | |
2010 | sw->is_unplugged = true; | |
2011 | ||
b433d010 | 2012 | tb_switch_for_each_port(sw, port) { |
dfe40ca4 | 2013 | if (port->xdomain) |
d1ff7024 | 2014 | port->xdomain->is_unplugged = true; |
dfe40ca4 MW |
2015 | else if (tb_port_has_remote(port)) |
2016 | icm_unplug_children(port->remote->sw); | |
f67cf491 MW |
2017 | } |
2018 | } | |
2019 | ||
4f7c2e0d MW |
2020 | static int complete_rpm(struct device *dev, void *data) |
2021 | { | |
2022 | struct tb_switch *sw = tb_to_switch(dev); | |
2023 | ||
2024 | if (sw) | |
2025 | complete(&sw->rpm_complete); | |
2026 | return 0; | |
2027 | } | |
2028 | ||
2029 | static void remove_unplugged_switch(struct tb_switch *sw) | |
2030 | { | |
600c0849 MW |
2031 | struct device *parent = get_device(sw->dev.parent); |
2032 | ||
2033 | pm_runtime_get_sync(parent); | |
4f7c2e0d MW |
2034 | |
2035 | /* | |
2036 | * Signal this and switches below for rpm_complete because | |
2037 | * tb_switch_remove() calls pm_runtime_get_sync() that then waits | |
2038 | * for it. | |
2039 | */ | |
2040 | complete_rpm(&sw->dev, NULL); | |
2041 | bus_for_each_dev(&tb_bus_type, &sw->dev, NULL, complete_rpm); | |
2042 | tb_switch_remove(sw); | |
2043 | ||
600c0849 MW |
2044 | pm_runtime_mark_last_busy(parent); |
2045 | pm_runtime_put_autosuspend(parent); | |
2046 | ||
2047 | put_device(parent); | |
4f7c2e0d MW |
2048 | } |
2049 | ||
f67cf491 MW |
2050 | static void icm_free_unplugged_children(struct tb_switch *sw) |
2051 | { | |
b433d010 | 2052 | struct tb_port *port; |
f67cf491 | 2053 | |
b433d010 | 2054 | tb_switch_for_each_port(sw, port) { |
d1ff7024 MW |
2055 | if (port->xdomain && port->xdomain->is_unplugged) { |
2056 | tb_xdomain_remove(port->xdomain); | |
2057 | port->xdomain = NULL; | |
dfe40ca4 MW |
2058 | } else if (tb_port_has_remote(port)) { |
2059 | if (port->remote->sw->is_unplugged) { | |
4f7c2e0d | 2060 | remove_unplugged_switch(port->remote->sw); |
dfe40ca4 MW |
2061 | port->remote = NULL; |
2062 | } else { | |
2063 | icm_free_unplugged_children(port->remote->sw); | |
2064 | } | |
f67cf491 MW |
2065 | } |
2066 | } | |
2067 | } | |
2068 | ||
2069 | static void icm_rescan_work(struct work_struct *work) | |
2070 | { | |
2071 | struct icm *icm = container_of(work, struct icm, rescan_work.work); | |
2072 | struct tb *tb = icm_to_tb(icm); | |
2073 | ||
2074 | mutex_lock(&tb->lock); | |
2075 | if (tb->root_switch) | |
2076 | icm_free_unplugged_children(tb->root_switch); | |
2077 | mutex_unlock(&tb->lock); | |
2078 | } | |
2079 | ||
2080 | static void icm_complete(struct tb *tb) | |
2081 | { | |
2082 | struct icm *icm = tb_priv(tb); | |
2083 | ||
2084 | if (tb->nhi->going_away) | |
2085 | return; | |
2086 | ||
3cdb9446 MW |
2087 | /* |
2088 | * If RTD3 was vetoed before we entered system suspend allow it | |
2089 | * again now before driver ready is sent. Firmware sends a new RTD3 | |
2090 | * veto if it is still the case after we have sent it driver ready | |
2091 | * command. | |
2092 | */ | |
2093 | icm_veto_end(tb); | |
f67cf491 MW |
2094 | icm_unplug_children(tb->root_switch); |
2095 | ||
2096 | /* | |
2097 | * Now all existing children should be resumed, start events | |
2098 | * from ICM to get updated status. | |
2099 | */ | |
9039387e | 2100 | __icm_driver_ready(tb, NULL, NULL, NULL, NULL); |
f67cf491 MW |
2101 | |
2102 | /* | |
2103 | * We do not get notifications of devices that have been | |
2104 | * unplugged during suspend so schedule rescan to clean them up | |
2105 | * if any. | |
2106 | */ | |
2107 | queue_delayed_work(tb->wq, &icm->rescan_work, msecs_to_jiffies(500)); | |
2108 | } | |
2109 | ||
2d8ff0b5 MW |
2110 | static int icm_runtime_suspend(struct tb *tb) |
2111 | { | |
2112 | nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DRV_UNLOADS, 0); | |
2113 | return 0; | |
2114 | } | |
2115 | ||
4f7c2e0d MW |
2116 | static int icm_runtime_suspend_switch(struct tb_switch *sw) |
2117 | { | |
2118 | if (tb_route(sw)) | |
2119 | reinit_completion(&sw->rpm_complete); | |
2120 | return 0; | |
2121 | } | |
2122 | ||
2123 | static int icm_runtime_resume_switch(struct tb_switch *sw) | |
2124 | { | |
2125 | if (tb_route(sw)) { | |
2126 | if (!wait_for_completion_timeout(&sw->rpm_complete, | |
2127 | msecs_to_jiffies(500))) { | |
2128 | dev_dbg(&sw->dev, "runtime resuming timed out\n"); | |
2129 | } | |
2130 | } | |
2131 | return 0; | |
2132 | } | |
2133 | ||
2d8ff0b5 MW |
2134 | static int icm_runtime_resume(struct tb *tb) |
2135 | { | |
2136 | /* | |
2137 | * We can reuse the same resume functionality than with system | |
2138 | * suspend. | |
2139 | */ | |
2140 | icm_complete(tb); | |
2141 | return 0; | |
2142 | } | |
2143 | ||
f67cf491 MW |
2144 | static int icm_start(struct tb *tb) |
2145 | { | |
e6b245cc | 2146 | struct icm *icm = tb_priv(tb); |
f67cf491 MW |
2147 | int ret; |
2148 | ||
e6b245cc MW |
2149 | if (icm->safe_mode) |
2150 | tb->root_switch = tb_switch_alloc_safe_mode(tb, &tb->dev, 0); | |
2151 | else | |
2152 | tb->root_switch = tb_switch_alloc(tb, &tb->dev, 0); | |
444ac384 MW |
2153 | if (IS_ERR(tb->root_switch)) |
2154 | return PTR_ERR(tb->root_switch); | |
f67cf491 | 2155 | |
f437c24b | 2156 | tb->root_switch->no_nvm_upgrade = !icm->can_upgrade_nvm; |
2d8ff0b5 | 2157 | tb->root_switch->rpm = icm->rpm; |
e6b245cc | 2158 | |
3cdb9446 MW |
2159 | if (icm->set_uuid) |
2160 | icm->set_uuid(tb); | |
2161 | ||
f67cf491 | 2162 | ret = tb_switch_add(tb->root_switch); |
d1ff7024 | 2163 | if (ret) { |
f67cf491 | 2164 | tb_switch_put(tb->root_switch); |
d1ff7024 MW |
2165 | tb->root_switch = NULL; |
2166 | } | |
f67cf491 MW |
2167 | |
2168 | return ret; | |
2169 | } | |
2170 | ||
2171 | static void icm_stop(struct tb *tb) | |
2172 | { | |
2173 | struct icm *icm = tb_priv(tb); | |
2174 | ||
2175 | cancel_delayed_work(&icm->rescan_work); | |
2176 | tb_switch_remove(tb->root_switch); | |
2177 | tb->root_switch = NULL; | |
2178 | nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DRV_UNLOADS, 0); | |
9039387e MW |
2179 | kfree(icm->last_nvm_auth); |
2180 | icm->last_nvm_auth = NULL; | |
f67cf491 MW |
2181 | } |
2182 | ||
e6b245cc MW |
2183 | static int icm_disconnect_pcie_paths(struct tb *tb) |
2184 | { | |
2185 | return nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DISCONNECT_PCIE_PATHS, 0); | |
2186 | } | |
2187 | ||
9039387e MW |
2188 | static void icm_usb4_switch_nvm_auth_complete(void *data) |
2189 | { | |
2190 | struct usb4_switch_nvm_auth *auth = data; | |
2191 | struct icm *icm = auth->icm; | |
2192 | struct tb *tb = icm_to_tb(icm); | |
2193 | ||
2194 | tb_dbg(tb, "NVM_AUTH response for %llx flags %#x status %#x\n", | |
2195 | get_route(auth->reply.route_hi, auth->reply.route_lo), | |
2196 | auth->reply.hdr.flags, auth->reply.status); | |
2197 | ||
2198 | mutex_lock(&tb->lock); | |
2199 | if (WARN_ON(icm->last_nvm_auth)) | |
2200 | kfree(icm->last_nvm_auth); | |
2201 | icm->last_nvm_auth = auth; | |
2202 | mutex_unlock(&tb->lock); | |
2203 | } | |
2204 | ||
2205 | static int icm_usb4_switch_nvm_authenticate(struct tb *tb, u64 route) | |
2206 | { | |
2207 | struct usb4_switch_nvm_auth *auth; | |
2208 | struct icm *icm = tb_priv(tb); | |
2209 | struct tb_cfg_request *req; | |
2210 | int ret; | |
2211 | ||
2212 | auth = kzalloc(sizeof(*auth), GFP_KERNEL); | |
2213 | if (!auth) | |
2214 | return -ENOMEM; | |
2215 | ||
2216 | auth->icm = icm; | |
2217 | auth->request.hdr.code = ICM_USB4_SWITCH_OP; | |
2218 | auth->request.route_hi = upper_32_bits(route); | |
2219 | auth->request.route_lo = lower_32_bits(route); | |
2220 | auth->request.opcode = USB4_SWITCH_OP_NVM_AUTH; | |
2221 | ||
2222 | req = tb_cfg_request_alloc(); | |
2223 | if (!req) { | |
2224 | ret = -ENOMEM; | |
2225 | goto err_free_auth; | |
2226 | } | |
2227 | ||
2228 | req->match = icm_match; | |
2229 | req->copy = icm_copy; | |
2230 | req->request = &auth->request; | |
2231 | req->request_size = sizeof(auth->request); | |
2232 | req->request_type = TB_CFG_PKG_ICM_CMD; | |
2233 | req->response = &auth->reply; | |
2234 | req->npackets = 1; | |
2235 | req->response_size = sizeof(auth->reply); | |
2236 | req->response_type = TB_CFG_PKG_ICM_RESP; | |
2237 | ||
2238 | tb_dbg(tb, "NVM_AUTH request for %llx\n", route); | |
2239 | ||
2240 | mutex_lock(&icm->request_lock); | |
2241 | ret = tb_cfg_request(tb->ctl, req, icm_usb4_switch_nvm_auth_complete, | |
2242 | auth); | |
2243 | mutex_unlock(&icm->request_lock); | |
2244 | ||
2245 | tb_cfg_request_put(req); | |
2246 | if (ret) | |
2247 | goto err_free_auth; | |
2248 | return 0; | |
2249 | ||
2250 | err_free_auth: | |
2251 | kfree(auth); | |
2252 | return ret; | |
2253 | } | |
2254 | ||
2255 | static int icm_usb4_switch_op(struct tb_switch *sw, u16 opcode, u32 *metadata, | |
2256 | u8 *status, const void *tx_data, size_t tx_data_len, | |
2257 | void *rx_data, size_t rx_data_len) | |
2258 | { | |
2259 | struct icm_usb4_switch_op_response reply; | |
2260 | struct icm_usb4_switch_op request; | |
2261 | struct tb *tb = sw->tb; | |
2262 | struct icm *icm = tb_priv(tb); | |
2263 | u64 route = tb_route(sw); | |
2264 | int ret; | |
2265 | ||
2266 | /* | |
2267 | * USB4 router operation proxy is supported in firmware if the | |
2268 | * protocol version is 3 or higher. | |
2269 | */ | |
2270 | if (icm->proto_version < 3) | |
2271 | return -EOPNOTSUPP; | |
2272 | ||
2273 | /* | |
2274 | * NVM_AUTH is a special USB4 proxy operation that does not | |
2275 | * return immediately so handle it separately. | |
2276 | */ | |
2277 | if (opcode == USB4_SWITCH_OP_NVM_AUTH) | |
2278 | return icm_usb4_switch_nvm_authenticate(tb, route); | |
2279 | ||
2280 | memset(&request, 0, sizeof(request)); | |
2281 | request.hdr.code = ICM_USB4_SWITCH_OP; | |
2282 | request.route_hi = upper_32_bits(route); | |
2283 | request.route_lo = lower_32_bits(route); | |
2284 | request.opcode = opcode; | |
2285 | if (metadata) | |
2286 | request.metadata = *metadata; | |
2287 | ||
2288 | if (tx_data_len) { | |
2289 | request.data_len_valid |= ICM_USB4_SWITCH_DATA_VALID; | |
2290 | if (tx_data_len < ARRAY_SIZE(request.data)) | |
2291 | request.data_len_valid = | |
2292 | tx_data_len & ICM_USB4_SWITCH_DATA_LEN_MASK; | |
2293 | memcpy(request.data, tx_data, tx_data_len * sizeof(u32)); | |
2294 | } | |
2295 | ||
2296 | memset(&reply, 0, sizeof(reply)); | |
2297 | ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply), | |
2298 | 1, ICM_TIMEOUT); | |
2299 | if (ret) | |
2300 | return ret; | |
2301 | ||
2302 | if (reply.hdr.flags & ICM_FLAGS_ERROR) | |
2303 | return -EIO; | |
2304 | ||
2305 | if (status) | |
2306 | *status = reply.status; | |
2307 | ||
2308 | if (metadata) | |
2309 | *metadata = reply.metadata; | |
2310 | ||
2311 | if (rx_data_len) | |
2312 | memcpy(rx_data, reply.data, rx_data_len * sizeof(u32)); | |
2313 | ||
2314 | return 0; | |
2315 | } | |
2316 | ||
2317 | static int icm_usb4_switch_nvm_authenticate_status(struct tb_switch *sw, | |
2318 | u32 *status) | |
2319 | { | |
2320 | struct usb4_switch_nvm_auth *auth; | |
2321 | struct tb *tb = sw->tb; | |
2322 | struct icm *icm = tb_priv(tb); | |
2323 | int ret = 0; | |
2324 | ||
2325 | if (icm->proto_version < 3) | |
2326 | return -EOPNOTSUPP; | |
2327 | ||
2328 | auth = icm->last_nvm_auth; | |
2329 | icm->last_nvm_auth = NULL; | |
2330 | ||
2331 | if (auth && auth->reply.route_hi == sw->config.route_hi && | |
2332 | auth->reply.route_lo == sw->config.route_lo) { | |
c14556fc | 2333 | tb_dbg(tb, "NVM_AUTH found for %llx flags %#x status %#x\n", |
9039387e MW |
2334 | tb_route(sw), auth->reply.hdr.flags, auth->reply.status); |
2335 | if (auth->reply.hdr.flags & ICM_FLAGS_ERROR) | |
2336 | ret = -EIO; | |
2337 | else | |
2338 | *status = auth->reply.status; | |
2339 | } else { | |
2340 | *status = 0; | |
2341 | } | |
2342 | ||
2343 | kfree(auth); | |
2344 | return ret; | |
2345 | } | |
2346 | ||
9aaa3b8b | 2347 | /* Falcon Ridge */ |
f67cf491 MW |
2348 | static const struct tb_cm_ops icm_fr_ops = { |
2349 | .driver_ready = icm_driver_ready, | |
2350 | .start = icm_start, | |
2351 | .stop = icm_stop, | |
2352 | .suspend = icm_suspend, | |
2353 | .complete = icm_complete, | |
2354 | .handle_event = icm_handle_event, | |
2355 | .approve_switch = icm_fr_approve_switch, | |
2356 | .add_switch_key = icm_fr_add_switch_key, | |
2357 | .challenge_switch_key = icm_fr_challenge_switch_key, | |
e6b245cc | 2358 | .disconnect_pcie_paths = icm_disconnect_pcie_paths, |
d1ff7024 MW |
2359 | .approve_xdomain_paths = icm_fr_approve_xdomain_paths, |
2360 | .disconnect_xdomain_paths = icm_fr_disconnect_xdomain_paths, | |
f67cf491 MW |
2361 | }; |
2362 | ||
9aaa3b8b MW |
2363 | /* Alpine Ridge */ |
2364 | static const struct tb_cm_ops icm_ar_ops = { | |
2365 | .driver_ready = icm_driver_ready, | |
2366 | .start = icm_start, | |
2367 | .stop = icm_stop, | |
2368 | .suspend = icm_suspend, | |
2369 | .complete = icm_complete, | |
2d8ff0b5 MW |
2370 | .runtime_suspend = icm_runtime_suspend, |
2371 | .runtime_resume = icm_runtime_resume, | |
4f7c2e0d MW |
2372 | .runtime_suspend_switch = icm_runtime_suspend_switch, |
2373 | .runtime_resume_switch = icm_runtime_resume_switch, | |
9aaa3b8b MW |
2374 | .handle_event = icm_handle_event, |
2375 | .get_boot_acl = icm_ar_get_boot_acl, | |
2376 | .set_boot_acl = icm_ar_set_boot_acl, | |
2377 | .approve_switch = icm_fr_approve_switch, | |
2378 | .add_switch_key = icm_fr_add_switch_key, | |
2379 | .challenge_switch_key = icm_fr_challenge_switch_key, | |
2380 | .disconnect_pcie_paths = icm_disconnect_pcie_paths, | |
2381 | .approve_xdomain_paths = icm_fr_approve_xdomain_paths, | |
2382 | .disconnect_xdomain_paths = icm_fr_disconnect_xdomain_paths, | |
2383 | }; | |
2384 | ||
4bac471d RM |
2385 | /* Titan Ridge */ |
2386 | static const struct tb_cm_ops icm_tr_ops = { | |
2387 | .driver_ready = icm_driver_ready, | |
2388 | .start = icm_start, | |
2389 | .stop = icm_stop, | |
2390 | .suspend = icm_suspend, | |
2391 | .complete = icm_complete, | |
2d8ff0b5 MW |
2392 | .runtime_suspend = icm_runtime_suspend, |
2393 | .runtime_resume = icm_runtime_resume, | |
4f7c2e0d MW |
2394 | .runtime_suspend_switch = icm_runtime_suspend_switch, |
2395 | .runtime_resume_switch = icm_runtime_resume_switch, | |
4bac471d RM |
2396 | .handle_event = icm_handle_event, |
2397 | .get_boot_acl = icm_ar_get_boot_acl, | |
2398 | .set_boot_acl = icm_ar_set_boot_acl, | |
2399 | .approve_switch = icm_tr_approve_switch, | |
2400 | .add_switch_key = icm_tr_add_switch_key, | |
2401 | .challenge_switch_key = icm_tr_challenge_switch_key, | |
2402 | .disconnect_pcie_paths = icm_disconnect_pcie_paths, | |
2403 | .approve_xdomain_paths = icm_tr_approve_xdomain_paths, | |
2404 | .disconnect_xdomain_paths = icm_tr_disconnect_xdomain_paths, | |
9039387e MW |
2405 | .usb4_switch_op = icm_usb4_switch_op, |
2406 | .usb4_switch_nvm_authenticate_status = | |
2407 | icm_usb4_switch_nvm_authenticate_status, | |
4bac471d RM |
2408 | }; |
2409 | ||
3cdb9446 MW |
2410 | /* Ice Lake */ |
2411 | static const struct tb_cm_ops icm_icl_ops = { | |
2412 | .driver_ready = icm_driver_ready, | |
2413 | .start = icm_start, | |
2414 | .stop = icm_stop, | |
2415 | .complete = icm_complete, | |
2416 | .runtime_suspend = icm_runtime_suspend, | |
2417 | .runtime_resume = icm_runtime_resume, | |
2418 | .handle_event = icm_handle_event, | |
2419 | .approve_xdomain_paths = icm_tr_approve_xdomain_paths, | |
2420 | .disconnect_xdomain_paths = icm_tr_disconnect_xdomain_paths, | |
9039387e MW |
2421 | .usb4_switch_op = icm_usb4_switch_op, |
2422 | .usb4_switch_nvm_authenticate_status = | |
2423 | icm_usb4_switch_nvm_authenticate_status, | |
3cdb9446 MW |
2424 | }; |
2425 | ||
f67cf491 MW |
2426 | struct tb *icm_probe(struct tb_nhi *nhi) |
2427 | { | |
2428 | struct icm *icm; | |
2429 | struct tb *tb; | |
2430 | ||
7f0a34d7 | 2431 | tb = tb_domain_alloc(nhi, ICM_TIMEOUT, sizeof(struct icm)); |
f67cf491 MW |
2432 | if (!tb) |
2433 | return NULL; | |
2434 | ||
2435 | icm = tb_priv(tb); | |
2436 | INIT_DELAYED_WORK(&icm->rescan_work, icm_rescan_work); | |
2437 | mutex_init(&icm->request_lock); | |
2438 | ||
2439 | switch (nhi->pdev->device) { | |
2440 | case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_2C_NHI: | |
2441 | case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI: | |
f437c24b | 2442 | icm->can_upgrade_nvm = true; |
f67cf491 MW |
2443 | icm->is_supported = icm_fr_is_supported; |
2444 | icm->get_route = icm_fr_get_route; | |
d04522fa | 2445 | icm->save_devices = icm_fr_save_devices; |
3080e197 | 2446 | icm->driver_ready = icm_fr_driver_ready; |
f67cf491 MW |
2447 | icm->device_connected = icm_fr_device_connected; |
2448 | icm->device_disconnected = icm_fr_device_disconnected; | |
d1ff7024 MW |
2449 | icm->xdomain_connected = icm_fr_xdomain_connected; |
2450 | icm->xdomain_disconnected = icm_fr_xdomain_disconnected; | |
f67cf491 MW |
2451 | tb->cm_ops = &icm_fr_ops; |
2452 | break; | |
2453 | ||
2454 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_NHI: | |
2455 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_NHI: | |
2456 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_NHI: | |
2457 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_NHI: | |
2458 | case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_NHI: | |
9aaa3b8b | 2459 | icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES; |
f437c24b MW |
2460 | /* |
2461 | * NVM upgrade has not been tested on Apple systems and | |
2462 | * they don't provide images publicly either. To be on | |
2463 | * the safe side prevent root switch NVM upgrade on Macs | |
2464 | * for now. | |
2465 | */ | |
2466 | icm->can_upgrade_nvm = !x86_apple_machine; | |
f67cf491 | 2467 | icm->is_supported = icm_ar_is_supported; |
0d53827d | 2468 | icm->cio_reset = icm_ar_cio_reset; |
f67cf491 MW |
2469 | icm->get_mode = icm_ar_get_mode; |
2470 | icm->get_route = icm_ar_get_route; | |
d04522fa | 2471 | icm->save_devices = icm_fr_save_devices; |
9aaa3b8b | 2472 | icm->driver_ready = icm_ar_driver_ready; |
f67cf491 MW |
2473 | icm->device_connected = icm_fr_device_connected; |
2474 | icm->device_disconnected = icm_fr_device_disconnected; | |
d1ff7024 MW |
2475 | icm->xdomain_connected = icm_fr_xdomain_connected; |
2476 | icm->xdomain_disconnected = icm_fr_xdomain_disconnected; | |
9aaa3b8b | 2477 | tb->cm_ops = &icm_ar_ops; |
f67cf491 | 2478 | break; |
4bac471d RM |
2479 | |
2480 | case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_NHI: | |
2481 | case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_NHI: | |
2482 | icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES; | |
f437c24b | 2483 | icm->can_upgrade_nvm = !x86_apple_machine; |
4bac471d | 2484 | icm->is_supported = icm_ar_is_supported; |
0d53827d | 2485 | icm->cio_reset = icm_tr_cio_reset; |
4bac471d RM |
2486 | icm->get_mode = icm_ar_get_mode; |
2487 | icm->driver_ready = icm_tr_driver_ready; | |
2488 | icm->device_connected = icm_tr_device_connected; | |
2489 | icm->device_disconnected = icm_tr_device_disconnected; | |
2490 | icm->xdomain_connected = icm_tr_xdomain_connected; | |
2491 | icm->xdomain_disconnected = icm_tr_xdomain_disconnected; | |
2492 | tb->cm_ops = &icm_tr_ops; | |
2493 | break; | |
3cdb9446 MW |
2494 | |
2495 | case PCI_DEVICE_ID_INTEL_ICL_NHI0: | |
2496 | case PCI_DEVICE_ID_INTEL_ICL_NHI1: | |
354a7a77 | 2497 | icm->is_supported = icm_fr_is_supported; |
3cdb9446 MW |
2498 | icm->driver_ready = icm_icl_driver_ready; |
2499 | icm->set_uuid = icm_icl_set_uuid; | |
2500 | icm->device_connected = icm_icl_device_connected; | |
2501 | icm->device_disconnected = icm_tr_device_disconnected; | |
2502 | icm->xdomain_connected = icm_tr_xdomain_connected; | |
2503 | icm->xdomain_disconnected = icm_tr_xdomain_disconnected; | |
2504 | icm->rtd3_veto = icm_icl_rtd3_veto; | |
2505 | tb->cm_ops = &icm_icl_ops; | |
2506 | break; | |
57d8df68 MW |
2507 | |
2508 | case PCI_DEVICE_ID_INTEL_TGL_NHI0: | |
2509 | case PCI_DEVICE_ID_INTEL_TGL_NHI1: | |
f6439c53 MW |
2510 | case PCI_DEVICE_ID_INTEL_TGL_H_NHI0: |
2511 | case PCI_DEVICE_ID_INTEL_TGL_H_NHI1: | |
13579486 AS |
2512 | case PCI_DEVICE_ID_INTEL_ADL_NHI0: |
2513 | case PCI_DEVICE_ID_INTEL_ADL_NHI1: | |
57d8df68 MW |
2514 | icm->is_supported = icm_tgl_is_supported; |
2515 | icm->driver_ready = icm_icl_driver_ready; | |
2516 | icm->set_uuid = icm_icl_set_uuid; | |
2517 | icm->device_connected = icm_icl_device_connected; | |
2518 | icm->device_disconnected = icm_tr_device_disconnected; | |
2519 | icm->xdomain_connected = icm_tr_xdomain_connected; | |
2520 | icm->xdomain_disconnected = icm_tr_xdomain_disconnected; | |
2521 | icm->rtd3_veto = icm_icl_rtd3_veto; | |
2522 | tb->cm_ops = &icm_icl_ops; | |
2523 | break; | |
db0746e3 MW |
2524 | |
2525 | case PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_4C_NHI: | |
2526 | icm->is_supported = icm_tgl_is_supported; | |
2527 | icm->get_mode = icm_ar_get_mode; | |
2528 | icm->driver_ready = icm_tr_driver_ready; | |
2529 | icm->device_connected = icm_tr_device_connected; | |
2530 | icm->device_disconnected = icm_tr_device_disconnected; | |
2531 | icm->xdomain_connected = icm_tr_xdomain_connected; | |
2532 | icm->xdomain_disconnected = icm_tr_xdomain_disconnected; | |
2533 | tb->cm_ops = &icm_tr_ops; | |
2534 | break; | |
f67cf491 MW |
2535 | } |
2536 | ||
2537 | if (!icm->is_supported || !icm->is_supported(tb)) { | |
2538 | dev_dbg(&nhi->pdev->dev, "ICM not supported on this controller\n"); | |
2539 | tb_domain_put(tb); | |
2540 | return NULL; | |
2541 | } | |
2542 | ||
e0258805 MW |
2543 | tb_dbg(tb, "using firmware connection manager\n"); |
2544 | ||
f67cf491 MW |
2545 | return tb; |
2546 | } |