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