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bb1b0133 TW |
1 | /* |
2 | * | |
3 | * Intel Management Engine Interface (Intel MEI) Linux driver | |
4 | * Copyright (c) 2003-2012, Intel Corporation. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <linux/pci.h> | |
18 | #include <linux/sched.h> | |
19 | #include <linux/wait.h> | |
20 | #include <linux/mei.h> | |
21 | ||
22 | #include "mei_dev.h" | |
0edb23fc | 23 | #include "hbm.h" |
bb1b0133 TW |
24 | #include "interface.h" |
25 | ||
cd51ed64 TW |
26 | /** |
27 | * mei_hbm_cl_hdr - construct client hbm header | |
28 | * @cl: - client | |
29 | * @hbm_cmd: host bus message command | |
30 | * @buf: buffer for cl header | |
31 | * @len: buffer length | |
32 | */ | |
33 | static inline | |
34 | void mei_hbm_cl_hdr(struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len) | |
35 | { | |
36 | struct mei_hbm_cl_cmd *cmd = buf; | |
37 | ||
38 | memset(cmd, 0, len); | |
39 | ||
40 | cmd->hbm_cmd = hbm_cmd; | |
41 | cmd->host_addr = cl->host_client_id; | |
42 | cmd->me_addr = cl->me_client_id; | |
43 | } | |
44 | ||
45 | /** | |
46 | * same_disconn_addr - tells if they have the same address | |
47 | * | |
48 | * @file: private data of the file object. | |
49 | * @disconn: disconnection request. | |
50 | * | |
51 | * returns true if addres are same | |
52 | */ | |
53 | static inline | |
54 | bool mei_hbm_cl_addr_equal(struct mei_cl *cl, void *buf) | |
55 | { | |
56 | struct mei_hbm_cl_cmd *cmd = buf; | |
57 | return cl->host_client_id == cmd->host_addr && | |
58 | cl->me_client_id == cmd->me_addr; | |
59 | } | |
60 | ||
61 | ||
6bbda15f TW |
62 | /** |
63 | * is_treat_specially_client - checks if the message belongs | |
64 | * to the file private data. | |
65 | * | |
66 | * @cl: private data of the file object | |
67 | * @rs: connect response bus message | |
68 | * | |
69 | */ | |
70 | static bool is_treat_specially_client(struct mei_cl *cl, | |
71 | struct hbm_client_connect_response *rs) | |
72 | { | |
73 | if (mei_hbm_cl_addr_equal(cl, rs)) { | |
74 | if (!rs->status) { | |
75 | cl->state = MEI_FILE_CONNECTED; | |
76 | cl->status = 0; | |
77 | ||
78 | } else { | |
79 | cl->state = MEI_FILE_DISCONNECTED; | |
80 | cl->status = -ENODEV; | |
81 | } | |
82 | cl->timer_count = 0; | |
83 | ||
84 | return true; | |
85 | } | |
86 | return false; | |
87 | } | |
88 | ||
bb1b0133 | 89 | /** |
8120e720 | 90 | * mei_hbm_start_req - sends start request message. |
bb1b0133 TW |
91 | * |
92 | * @dev: the device structure | |
bb1b0133 | 93 | */ |
8120e720 | 94 | void mei_hbm_start_req(struct mei_device *dev) |
bb1b0133 | 95 | { |
e46f1874 | 96 | struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr; |
bb1b0133 TW |
97 | struct hbm_host_version_request *start_req; |
98 | const size_t len = sizeof(struct hbm_host_version_request); | |
99 | ||
e46f1874 | 100 | mei_hbm_hdr(mei_hdr, len); |
bb1b0133 TW |
101 | |
102 | /* host start message */ | |
e46f1874 | 103 | start_req = (struct hbm_host_version_request *)dev->wr_msg.data; |
bb1b0133 TW |
104 | memset(start_req, 0, len); |
105 | start_req->hbm_cmd = HOST_START_REQ_CMD; | |
106 | start_req->host_version.major_version = HBM_MAJOR_VERSION; | |
107 | start_req->host_version.minor_version = HBM_MINOR_VERSION; | |
108 | ||
109 | dev->recvd_msg = false; | |
e46f1874 | 110 | if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) { |
bb1b0133 TW |
111 | dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n"); |
112 | dev->dev_state = MEI_DEV_RESETING; | |
113 | mei_reset(dev, 1); | |
114 | } | |
115 | dev->init_clients_state = MEI_START_MESSAGE; | |
116 | dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; | |
117 | return ; | |
118 | } | |
119 | ||
120 | /** | |
8120e720 | 121 | * mei_hbm_enum_clients_req - sends enumeration client request message. |
bb1b0133 TW |
122 | * |
123 | * @dev: the device structure | |
124 | * | |
125 | * returns none. | |
126 | */ | |
8120e720 | 127 | static void mei_hbm_enum_clients_req(struct mei_device *dev) |
bb1b0133 | 128 | { |
e46f1874 | 129 | struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr; |
bb1b0133 TW |
130 | struct hbm_host_enum_request *enum_req; |
131 | const size_t len = sizeof(struct hbm_host_enum_request); | |
132 | /* enumerate clients */ | |
e46f1874 | 133 | mei_hbm_hdr(mei_hdr, len); |
bb1b0133 | 134 | |
e46f1874 TW |
135 | enum_req = (struct hbm_host_enum_request *)dev->wr_msg.data; |
136 | memset(enum_req, 0, len); | |
bb1b0133 TW |
137 | enum_req->hbm_cmd = HOST_ENUM_REQ_CMD; |
138 | ||
e46f1874 | 139 | if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) { |
bb1b0133 TW |
140 | dev->dev_state = MEI_DEV_RESETING; |
141 | dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n"); | |
142 | mei_reset(dev, 1); | |
143 | } | |
144 | dev->init_clients_state = MEI_ENUM_CLIENTS_MESSAGE; | |
145 | dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; | |
146 | return; | |
147 | } | |
148 | ||
8120e720 TW |
149 | /** |
150 | * mei_hbm_prop_requsest - request property for a single client | |
151 | * | |
152 | * @dev: the device structure | |
153 | * | |
154 | * returns none. | |
155 | */ | |
bb1b0133 | 156 | |
8120e720 | 157 | static int mei_hbm_prop_req(struct mei_device *dev) |
bb1b0133 TW |
158 | { |
159 | ||
e46f1874 | 160 | struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr; |
bb1b0133 TW |
161 | struct hbm_props_request *prop_req; |
162 | const size_t len = sizeof(struct hbm_props_request); | |
163 | unsigned long next_client_index; | |
164 | u8 client_num; | |
165 | ||
166 | ||
167 | client_num = dev->me_client_presentation_num; | |
168 | ||
169 | next_client_index = find_next_bit(dev->me_clients_map, MEI_CLIENTS_MAX, | |
170 | dev->me_client_index); | |
171 | ||
172 | /* We got all client properties */ | |
173 | if (next_client_index == MEI_CLIENTS_MAX) { | |
174 | schedule_work(&dev->init_work); | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | dev->me_clients[client_num].client_id = next_client_index; | |
180 | dev->me_clients[client_num].mei_flow_ctrl_creds = 0; | |
181 | ||
e46f1874 TW |
182 | mei_hbm_hdr(mei_hdr, len); |
183 | prop_req = (struct hbm_props_request *)dev->wr_msg.data; | |
bb1b0133 TW |
184 | |
185 | memset(prop_req, 0, sizeof(struct hbm_props_request)); | |
186 | ||
187 | ||
188 | prop_req->hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD; | |
189 | prop_req->address = next_client_index; | |
190 | ||
e46f1874 | 191 | if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) { |
bb1b0133 TW |
192 | dev->dev_state = MEI_DEV_RESETING; |
193 | dev_err(&dev->pdev->dev, "Properties request command failed\n"); | |
194 | mei_reset(dev, 1); | |
195 | ||
196 | return -EIO; | |
197 | } | |
198 | ||
199 | dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; | |
200 | dev->me_client_index = next_client_index; | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
e46f1874 TW |
205 | /** |
206 | * mei_hbm_stop_req_prepare - perpare stop request message | |
207 | * | |
208 | * @dev - mei device | |
209 | * @mei_hdr - mei message header | |
210 | * @data - hbm message body buffer | |
211 | */ | |
212 | static void mei_hbm_stop_req_prepare(struct mei_device *dev, | |
213 | struct mei_msg_hdr *mei_hdr, unsigned char *data) | |
214 | { | |
215 | struct hbm_host_stop_request *req = | |
216 | (struct hbm_host_stop_request *)data; | |
217 | const size_t len = sizeof(struct hbm_host_stop_request); | |
218 | ||
219 | mei_hbm_hdr(mei_hdr, len); | |
220 | ||
221 | memset(req, 0, len); | |
222 | req->hbm_cmd = HOST_STOP_REQ_CMD; | |
223 | req->reason = DRIVER_STOP_REQUEST; | |
224 | } | |
225 | ||
bb1b0133 | 226 | /** |
8120e720 | 227 | * mei_hbm_cl_flow_control_req - sends flow control requst. |
bb1b0133 TW |
228 | * |
229 | * @dev: the device structure | |
8120e720 | 230 | * @cl: client info |
bb1b0133 TW |
231 | * |
232 | * This function returns -EIO on write failure | |
233 | */ | |
8120e720 | 234 | int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl) |
bb1b0133 | 235 | { |
e46f1874 | 236 | struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr; |
bb1b0133 TW |
237 | const size_t len = sizeof(struct hbm_flow_control); |
238 | ||
e46f1874 TW |
239 | mei_hbm_hdr(mei_hdr, len); |
240 | mei_hbm_cl_hdr(cl, MEI_FLOW_CONTROL_CMD, dev->wr_msg.data, len); | |
bb1b0133 | 241 | |
bb1b0133 TW |
242 | dev_dbg(&dev->pdev->dev, "sending flow control host client = %d, ME client = %d\n", |
243 | cl->host_client_id, cl->me_client_id); | |
244 | ||
e46f1874 | 245 | return mei_write_message(dev, mei_hdr, dev->wr_msg.data); |
bb1b0133 TW |
246 | } |
247 | ||
6bbda15f TW |
248 | /** |
249 | * add_single_flow_creds - adds single buffer credentials. | |
250 | * | |
251 | * @file: private data ot the file object. | |
252 | * @flow: flow control. | |
253 | */ | |
254 | static void mei_hbm_add_single_flow_creds(struct mei_device *dev, | |
255 | struct hbm_flow_control *flow) | |
256 | { | |
257 | struct mei_me_client *client; | |
258 | int i; | |
259 | ||
260 | for (i = 0; i < dev->me_clients_num; i++) { | |
261 | client = &dev->me_clients[i]; | |
262 | if (client && flow->me_addr == client->client_id) { | |
263 | if (client->props.single_recv_buf) { | |
264 | client->mei_flow_ctrl_creds++; | |
265 | dev_dbg(&dev->pdev->dev, "recv flow ctrl msg ME %d (single).\n", | |
266 | flow->me_addr); | |
267 | dev_dbg(&dev->pdev->dev, "flow control credentials =%d.\n", | |
268 | client->mei_flow_ctrl_creds); | |
269 | } else { | |
270 | BUG(); /* error in flow control */ | |
271 | } | |
272 | } | |
273 | } | |
274 | } | |
275 | ||
276 | /** | |
277 | * mei_hbm_cl_flow_control_res - flow control response from me | |
278 | * | |
279 | * @dev: the device structure | |
280 | * @flow_control: flow control response bus message | |
281 | */ | |
282 | static void mei_hbm_cl_flow_control_res(struct mei_device *dev, | |
283 | struct hbm_flow_control *flow_control) | |
284 | { | |
285 | struct mei_cl *cl = NULL; | |
286 | struct mei_cl *next = NULL; | |
287 | ||
288 | if (!flow_control->host_addr) { | |
289 | /* single receive buffer */ | |
290 | mei_hbm_add_single_flow_creds(dev, flow_control); | |
291 | return; | |
292 | } | |
293 | ||
294 | /* normal connection */ | |
295 | list_for_each_entry_safe(cl, next, &dev->file_list, link) { | |
296 | if (mei_hbm_cl_addr_equal(cl, flow_control)) { | |
297 | cl->mei_flow_ctrl_creds++; | |
298 | dev_dbg(&dev->pdev->dev, "flow ctrl msg for host %d ME %d.\n", | |
299 | flow_control->host_addr, flow_control->me_addr); | |
300 | dev_dbg(&dev->pdev->dev, "flow control credentials = %d.\n", | |
301 | cl->mei_flow_ctrl_creds); | |
302 | break; | |
303 | } | |
304 | } | |
305 | } | |
306 | ||
307 | ||
bb1b0133 | 308 | /** |
8120e720 | 309 | * mei_hbm_cl_disconnect_req - sends disconnect message to fw. |
bb1b0133 TW |
310 | * |
311 | * @dev: the device structure | |
8120e720 | 312 | * @cl: a client to disconnect from |
bb1b0133 TW |
313 | * |
314 | * This function returns -EIO on write failure | |
315 | */ | |
8120e720 | 316 | int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl) |
bb1b0133 | 317 | { |
e46f1874 | 318 | struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr; |
bb1b0133 TW |
319 | const size_t len = sizeof(struct hbm_client_connect_request); |
320 | ||
e46f1874 TW |
321 | mei_hbm_hdr(mei_hdr, len); |
322 | mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_REQ_CMD, dev->wr_msg.data, len); | |
bb1b0133 | 323 | |
e46f1874 | 324 | return mei_write_message(dev, mei_hdr, dev->wr_msg.data); |
bb1b0133 TW |
325 | } |
326 | ||
6bbda15f TW |
327 | /** |
328 | * mei_hbm_cl_disconnect_res - disconnect response from ME | |
329 | * | |
330 | * @dev: the device structure | |
331 | * @rs: disconnect response bus message | |
332 | */ | |
333 | static void mei_hbm_cl_disconnect_res(struct mei_device *dev, | |
334 | struct hbm_client_connect_response *rs) | |
335 | { | |
336 | struct mei_cl *cl; | |
337 | struct mei_cl_cb *pos = NULL, *next = NULL; | |
338 | ||
339 | dev_dbg(&dev->pdev->dev, | |
340 | "disconnect_response:\n" | |
341 | "ME Client = %d\n" | |
342 | "Host Client = %d\n" | |
343 | "Status = %d\n", | |
344 | rs->me_addr, | |
345 | rs->host_addr, | |
346 | rs->status); | |
347 | ||
348 | list_for_each_entry_safe(pos, next, &dev->ctrl_rd_list.list, list) { | |
349 | cl = pos->cl; | |
350 | ||
351 | if (!cl) { | |
352 | list_del(&pos->list); | |
353 | return; | |
354 | } | |
355 | ||
356 | dev_dbg(&dev->pdev->dev, "list_for_each_entry_safe in ctrl_rd_list.\n"); | |
357 | if (mei_hbm_cl_addr_equal(cl, rs)) { | |
358 | list_del(&pos->list); | |
359 | if (!rs->status) | |
360 | cl->state = MEI_FILE_DISCONNECTED; | |
361 | ||
362 | cl->status = 0; | |
363 | cl->timer_count = 0; | |
364 | break; | |
365 | } | |
366 | } | |
367 | } | |
368 | ||
bb1b0133 | 369 | /** |
8120e720 | 370 | * mei_hbm_cl_connect_req - send connection request to specific me client |
bb1b0133 TW |
371 | * |
372 | * @dev: the device structure | |
8120e720 | 373 | * @cl: a client to connect to |
bb1b0133 | 374 | * |
8120e720 | 375 | * returns -EIO on write failure |
bb1b0133 | 376 | */ |
8120e720 | 377 | int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl) |
bb1b0133 | 378 | { |
e46f1874 | 379 | struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr; |
bb1b0133 TW |
380 | const size_t len = sizeof(struct hbm_client_connect_request); |
381 | ||
e46f1874 TW |
382 | mei_hbm_hdr(mei_hdr, len); |
383 | mei_hbm_cl_hdr(cl, CLIENT_CONNECT_REQ_CMD, dev->wr_msg.data, len); | |
bb1b0133 | 384 | |
e46f1874 | 385 | return mei_write_message(dev, mei_hdr, dev->wr_msg.data); |
bb1b0133 TW |
386 | } |
387 | ||
6bbda15f TW |
388 | /** |
389 | * mei_hbm_cl_connect_res - connect resposne from the ME | |
390 | * | |
391 | * @dev: the device structure | |
392 | * @rs: connect response bus message | |
393 | */ | |
394 | static void mei_hbm_cl_connect_res(struct mei_device *dev, | |
395 | struct hbm_client_connect_response *rs) | |
396 | { | |
397 | ||
398 | struct mei_cl *cl; | |
399 | struct mei_cl_cb *pos = NULL, *next = NULL; | |
400 | ||
401 | dev_dbg(&dev->pdev->dev, | |
402 | "connect_response:\n" | |
403 | "ME Client = %d\n" | |
404 | "Host Client = %d\n" | |
405 | "Status = %d\n", | |
406 | rs->me_addr, | |
407 | rs->host_addr, | |
408 | rs->status); | |
409 | ||
410 | /* if WD or iamthif client treat specially */ | |
411 | ||
412 | if (is_treat_specially_client(&dev->wd_cl, rs)) { | |
413 | dev_dbg(&dev->pdev->dev, "successfully connected to WD client.\n"); | |
414 | mei_watchdog_register(dev); | |
415 | ||
416 | return; | |
417 | } | |
418 | ||
419 | if (is_treat_specially_client(&dev->iamthif_cl, rs)) { | |
420 | dev->iamthif_state = MEI_IAMTHIF_IDLE; | |
421 | return; | |
422 | } | |
423 | list_for_each_entry_safe(pos, next, &dev->ctrl_rd_list.list, list) { | |
424 | ||
425 | cl = pos->cl; | |
426 | if (!cl) { | |
427 | list_del(&pos->list); | |
428 | return; | |
429 | } | |
430 | if (pos->fop_type == MEI_FOP_IOCTL) { | |
431 | if (is_treat_specially_client(cl, rs)) { | |
432 | list_del(&pos->list); | |
433 | cl->status = 0; | |
434 | cl->timer_count = 0; | |
435 | break; | |
436 | } | |
437 | } | |
438 | } | |
439 | } | |
440 | ||
441 | ||
bb1b0133 | 442 | /** |
8120e720 TW |
443 | * mei_client_disconnect_request - disconnect request initiated by me |
444 | * host sends disoconnect response | |
bb1b0133 TW |
445 | * |
446 | * @dev: the device structure. | |
8120e720 | 447 | * @disconnect_req: disconnect request bus message from the me |
bb1b0133 | 448 | */ |
8120e720 | 449 | static void mei_hbm_fw_disconnect_req(struct mei_device *dev, |
bb1b0133 TW |
450 | struct hbm_client_connect_request *disconnect_req) |
451 | { | |
cd51ed64 | 452 | struct mei_cl *cl, *next; |
bb1b0133 TW |
453 | const size_t len = sizeof(struct hbm_client_connect_response); |
454 | ||
cd51ed64 TW |
455 | list_for_each_entry_safe(cl, next, &dev->file_list, link) { |
456 | if (mei_hbm_cl_addr_equal(cl, disconnect_req)) { | |
bb1b0133 TW |
457 | dev_dbg(&dev->pdev->dev, "disconnect request host client %d ME client %d.\n", |
458 | disconnect_req->host_addr, | |
459 | disconnect_req->me_addr); | |
cd51ed64 TW |
460 | cl->state = MEI_FILE_DISCONNECTED; |
461 | cl->timer_count = 0; | |
462 | if (cl == &dev->wd_cl) | |
bb1b0133 | 463 | dev->wd_pending = false; |
cd51ed64 | 464 | else if (cl == &dev->iamthif_cl) |
bb1b0133 TW |
465 | dev->iamthif_timer = 0; |
466 | ||
467 | /* prepare disconnect response */ | |
e46f1874 | 468 | mei_hbm_hdr(&dev->wr_ext_msg.hdr, len); |
cd51ed64 | 469 | mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_RES_CMD, |
e46f1874 | 470 | dev->wr_ext_msg.data, len); |
bb1b0133 TW |
471 | break; |
472 | } | |
473 | } | |
474 | } | |
475 | ||
476 | ||
477 | /** | |
478 | * mei_hbm_dispatch - bottom half read routine after ISR to | |
479 | * handle the read bus message cmd processing. | |
480 | * | |
481 | * @dev: the device structure | |
482 | * @mei_hdr: header of bus message | |
483 | */ | |
484 | void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) | |
485 | { | |
486 | struct mei_bus_message *mei_msg; | |
487 | struct mei_me_client *me_client; | |
488 | struct hbm_host_version_response *version_res; | |
489 | struct hbm_client_connect_response *connect_res; | |
490 | struct hbm_client_connect_response *disconnect_res; | |
491 | struct hbm_client_connect_request *disconnect_req; | |
492 | struct hbm_flow_control *flow_control; | |
493 | struct hbm_props_response *props_res; | |
494 | struct hbm_host_enum_response *enum_res; | |
bb1b0133 TW |
495 | |
496 | /* read the message to our buffer */ | |
497 | BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf)); | |
498 | mei_read_slots(dev, dev->rd_msg_buf, hdr->length); | |
499 | mei_msg = (struct mei_bus_message *)dev->rd_msg_buf; | |
500 | ||
501 | switch (mei_msg->hbm_cmd) { | |
502 | case HOST_START_RES_CMD: | |
503 | version_res = (struct hbm_host_version_response *)mei_msg; | |
e46f1874 | 504 | if (!version_res->host_version_supported) { |
bb1b0133 | 505 | dev->version = version_res->me_max_version; |
e46f1874 | 506 | dev_dbg(&dev->pdev->dev, "version mismatch.\n"); |
bb1b0133 | 507 | |
e46f1874 TW |
508 | mei_hbm_stop_req_prepare(dev, &dev->wr_msg.hdr, |
509 | dev->wr_msg.data); | |
510 | mei_write_message(dev, &dev->wr_msg.hdr, | |
511 | dev->wr_msg.data); | |
512 | return; | |
513 | } | |
bb1b0133 | 514 | |
e46f1874 TW |
515 | dev->version.major_version = HBM_MAJOR_VERSION; |
516 | dev->version.minor_version = HBM_MINOR_VERSION; | |
517 | if (dev->dev_state == MEI_DEV_INIT_CLIENTS && | |
518 | dev->init_clients_state == MEI_START_MESSAGE) { | |
519 | dev->init_clients_timer = 0; | |
8120e720 | 520 | mei_hbm_enum_clients_req(dev); |
e46f1874 TW |
521 | } else { |
522 | dev->recvd_msg = false; | |
523 | dev_dbg(&dev->pdev->dev, "reset due to received hbm: host start\n"); | |
524 | mei_reset(dev, 1); | |
bb1b0133 TW |
525 | return; |
526 | } | |
527 | ||
528 | dev->recvd_msg = true; | |
529 | dev_dbg(&dev->pdev->dev, "host start response message received.\n"); | |
530 | break; | |
531 | ||
532 | case CLIENT_CONNECT_RES_CMD: | |
533 | connect_res = (struct hbm_client_connect_response *) mei_msg; | |
6bbda15f | 534 | mei_hbm_cl_connect_res(dev, connect_res); |
bb1b0133 TW |
535 | dev_dbg(&dev->pdev->dev, "client connect response message received.\n"); |
536 | wake_up(&dev->wait_recvd_msg); | |
537 | break; | |
538 | ||
539 | case CLIENT_DISCONNECT_RES_CMD: | |
540 | disconnect_res = (struct hbm_client_connect_response *) mei_msg; | |
6bbda15f | 541 | mei_hbm_cl_disconnect_res(dev, disconnect_res); |
bb1b0133 TW |
542 | dev_dbg(&dev->pdev->dev, "client disconnect response message received.\n"); |
543 | wake_up(&dev->wait_recvd_msg); | |
544 | break; | |
545 | ||
546 | case MEI_FLOW_CONTROL_CMD: | |
547 | flow_control = (struct hbm_flow_control *) mei_msg; | |
6bbda15f | 548 | mei_hbm_cl_flow_control_res(dev, flow_control); |
bb1b0133 TW |
549 | dev_dbg(&dev->pdev->dev, "client flow control response message received.\n"); |
550 | break; | |
551 | ||
552 | case HOST_CLIENT_PROPERTIES_RES_CMD: | |
553 | props_res = (struct hbm_props_response *)mei_msg; | |
554 | me_client = &dev->me_clients[dev->me_client_presentation_num]; | |
555 | ||
556 | if (props_res->status || !dev->me_clients) { | |
557 | dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message wrong status.\n"); | |
558 | mei_reset(dev, 1); | |
559 | return; | |
560 | } | |
561 | ||
562 | if (me_client->client_id != props_res->address) { | |
563 | dev_err(&dev->pdev->dev, | |
564 | "Host client properties reply mismatch\n"); | |
565 | mei_reset(dev, 1); | |
566 | ||
567 | return; | |
568 | } | |
569 | ||
570 | if (dev->dev_state != MEI_DEV_INIT_CLIENTS || | |
571 | dev->init_clients_state != MEI_CLIENT_PROPERTIES_MESSAGE) { | |
572 | dev_err(&dev->pdev->dev, | |
573 | "Unexpected client properties reply\n"); | |
574 | mei_reset(dev, 1); | |
575 | ||
576 | return; | |
577 | } | |
578 | ||
579 | me_client->props = props_res->client_properties; | |
580 | dev->me_client_index++; | |
581 | dev->me_client_presentation_num++; | |
582 | ||
8120e720 TW |
583 | /* request property for the next client */ |
584 | mei_hbm_prop_req(dev); | |
bb1b0133 TW |
585 | |
586 | break; | |
587 | ||
588 | case HOST_ENUM_RES_CMD: | |
589 | enum_res = (struct hbm_host_enum_response *) mei_msg; | |
590 | memcpy(dev->me_clients_map, enum_res->valid_addresses, 32); | |
591 | if (dev->dev_state == MEI_DEV_INIT_CLIENTS && | |
592 | dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) { | |
593 | dev->init_clients_timer = 0; | |
594 | dev->me_client_presentation_num = 0; | |
595 | dev->me_client_index = 0; | |
596 | mei_allocate_me_clients_storage(dev); | |
597 | dev->init_clients_state = | |
598 | MEI_CLIENT_PROPERTIES_MESSAGE; | |
599 | ||
8120e720 TW |
600 | /* first property reqeust */ |
601 | mei_hbm_prop_req(dev); | |
bb1b0133 TW |
602 | } else { |
603 | dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n"); | |
604 | mei_reset(dev, 1); | |
605 | return; | |
606 | } | |
607 | break; | |
608 | ||
609 | case HOST_STOP_RES_CMD: | |
610 | dev->dev_state = MEI_DEV_DISABLED; | |
611 | dev_dbg(&dev->pdev->dev, "resetting because of FW stop response.\n"); | |
612 | mei_reset(dev, 1); | |
613 | break; | |
614 | ||
615 | case CLIENT_DISCONNECT_REQ_CMD: | |
616 | /* search for client */ | |
617 | disconnect_req = (struct hbm_client_connect_request *)mei_msg; | |
8120e720 | 618 | mei_hbm_fw_disconnect_req(dev, disconnect_req); |
bb1b0133 TW |
619 | break; |
620 | ||
621 | case ME_STOP_REQ_CMD: | |
bb1b0133 | 622 | |
e46f1874 TW |
623 | mei_hbm_stop_req_prepare(dev, &dev->wr_ext_msg.hdr, |
624 | dev->wr_ext_msg.data); | |
bb1b0133 | 625 | break; |
bb1b0133 TW |
626 | default: |
627 | BUG(); | |
628 | break; | |
629 | ||
630 | } | |
631 | } | |
632 |