Commit | Line | Data |
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9fff0425 | 1 | // SPDX-License-Identifier: GPL-2.0 |
bb1b0133 | 2 | /* |
df4b37bc | 3 | * Copyright (c) 2003-2020, Intel Corporation. All rights reserved. |
bb1b0133 | 4 | * Intel Management Engine Interface (Intel MEI) Linux driver |
bb1b0133 | 5 | */ |
4fcbc99b | 6 | #include <linux/export.h> |
bb1b0133 TW |
7 | #include <linux/sched.h> |
8 | #include <linux/wait.h> | |
180ea05b | 9 | #include <linux/pm_runtime.h> |
1f180359 TW |
10 | #include <linux/slab.h> |
11 | ||
12 | #include <linux/mei.h> | |
bb1b0133 TW |
13 | |
14 | #include "mei_dev.h" | |
0edb23fc | 15 | #include "hbm.h" |
12d00665 | 16 | #include "client.h" |
bb1b0133 | 17 | |
89778d6e TW |
18 | static const char *mei_hbm_status_str(enum mei_hbm_status status) |
19 | { | |
20 | #define MEI_HBM_STATUS(status) case MEI_HBMS_##status: return #status | |
21 | switch (status) { | |
22 | MEI_HBM_STATUS(SUCCESS); | |
23 | MEI_HBM_STATUS(CLIENT_NOT_FOUND); | |
24 | MEI_HBM_STATUS(ALREADY_EXISTS); | |
25 | MEI_HBM_STATUS(REJECTED); | |
26 | MEI_HBM_STATUS(INVALID_PARAMETER); | |
27 | MEI_HBM_STATUS(NOT_ALLOWED); | |
28 | MEI_HBM_STATUS(ALREADY_STARTED); | |
29 | MEI_HBM_STATUS(NOT_STARTED); | |
30 | default: return "unknown"; | |
31 | } | |
32 | #undef MEI_HBM_STATUS | |
33 | }; | |
34 | ||
285e2996 AU |
35 | static const char *mei_cl_conn_status_str(enum mei_cl_connect_status status) |
36 | { | |
37 | #define MEI_CL_CS(status) case MEI_CL_CONN_##status: return #status | |
38 | switch (status) { | |
39 | MEI_CL_CS(SUCCESS); | |
40 | MEI_CL_CS(NOT_FOUND); | |
41 | MEI_CL_CS(ALREADY_STARTED); | |
42 | MEI_CL_CS(OUT_OF_RESOURCES); | |
43 | MEI_CL_CS(MESSAGE_SMALL); | |
71e117f2 | 44 | MEI_CL_CS(NOT_ALLOWED); |
285e2996 AU |
45 | default: return "unknown"; |
46 | } | |
47 | #undef MEI_CL_CCS | |
48 | } | |
49 | ||
1beeb4b9 AU |
50 | const char *mei_hbm_state_str(enum mei_hbm_state state) |
51 | { | |
52 | #define MEI_HBM_STATE(state) case MEI_HBM_##state: return #state | |
53 | switch (state) { | |
54 | MEI_HBM_STATE(IDLE); | |
55 | MEI_HBM_STATE(STARTING); | |
56 | MEI_HBM_STATE(STARTED); | |
c55bf542 | 57 | MEI_HBM_STATE(DR_SETUP); |
1beeb4b9 AU |
58 | MEI_HBM_STATE(ENUM_CLIENTS); |
59 | MEI_HBM_STATE(CLIENT_PROPERTIES); | |
60 | MEI_HBM_STATE(STOPPED); | |
61 | default: | |
62 | return "unknown"; | |
63 | } | |
64 | #undef MEI_HBM_STATE | |
65 | } | |
66 | ||
285e2996 AU |
67 | /** |
68 | * mei_cl_conn_status_to_errno - convert client connect response | |
69 | * status to error code | |
70 | * | |
71 | * @status: client connect response status | |
72 | * | |
a8605ea2 | 73 | * Return: corresponding error code |
285e2996 AU |
74 | */ |
75 | static int mei_cl_conn_status_to_errno(enum mei_cl_connect_status status) | |
76 | { | |
77 | switch (status) { | |
78 | case MEI_CL_CONN_SUCCESS: return 0; | |
79 | case MEI_CL_CONN_NOT_FOUND: return -ENOTTY; | |
80 | case MEI_CL_CONN_ALREADY_STARTED: return -EBUSY; | |
81 | case MEI_CL_CONN_OUT_OF_RESOURCES: return -EBUSY; | |
82 | case MEI_CL_CONN_MESSAGE_SMALL: return -EINVAL; | |
71e117f2 | 83 | case MEI_CL_CONN_NOT_ALLOWED: return -EBUSY; |
285e2996 AU |
84 | default: return -EINVAL; |
85 | } | |
86 | } | |
87 | ||
98e70866 TW |
88 | /** |
89 | * mei_hbm_write_message - wrapper for sending hbm messages. | |
90 | * | |
91 | * @dev: mei device | |
92 | * @hdr: mei header | |
93 | * @data: payload | |
94 | */ | |
95 | static inline int mei_hbm_write_message(struct mei_device *dev, | |
96 | struct mei_msg_hdr *hdr, | |
97 | const void *data) | |
98 | { | |
99 | return mei_write_message(dev, hdr, sizeof(*hdr), data, hdr->length); | |
100 | } | |
101 | ||
84b3294a TW |
102 | /** |
103 | * mei_hbm_idle - set hbm to idle state | |
104 | * | |
105 | * @dev: the device structure | |
106 | */ | |
107 | void mei_hbm_idle(struct mei_device *dev) | |
108 | { | |
109 | dev->init_clients_timer = 0; | |
110 | dev->hbm_state = MEI_HBM_IDLE; | |
111 | } | |
112 | ||
25ca6472 TW |
113 | /** |
114 | * mei_hbm_reset - reset hbm counters and book keeping data structurs | |
115 | * | |
116 | * @dev: the device structure | |
117 | */ | |
118 | void mei_hbm_reset(struct mei_device *dev) | |
119 | { | |
79563db9 | 120 | mei_me_cl_rm_all(dev); |
84b3294a TW |
121 | |
122 | mei_hbm_idle(dev); | |
123 | } | |
124 | ||
2190fe2a TW |
125 | /** |
126 | * mei_hbm_hdr - construct hbm header | |
127 | * | |
0cd7c01a | 128 | * @mei_hdr: hbm header |
2190fe2a TW |
129 | * @length: payload length |
130 | */ | |
131 | ||
0cd7c01a | 132 | static inline void mei_hbm_hdr(struct mei_msg_hdr *mei_hdr, size_t length) |
2190fe2a | 133 | { |
0cd7c01a TW |
134 | memset(mei_hdr, 0, sizeof(*mei_hdr)); |
135 | mei_hdr->length = length; | |
136 | mei_hdr->msg_complete = 1; | |
2190fe2a TW |
137 | } |
138 | ||
cd51ed64 TW |
139 | /** |
140 | * mei_hbm_cl_hdr - construct client hbm header | |
393b148f | 141 | * |
68d1aa65 | 142 | * @cl: client |
cd51ed64 TW |
143 | * @hbm_cmd: host bus message command |
144 | * @buf: buffer for cl header | |
145 | * @len: buffer length | |
146 | */ | |
147 | static inline | |
148 | void mei_hbm_cl_hdr(struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len) | |
149 | { | |
150 | struct mei_hbm_cl_cmd *cmd = buf; | |
151 | ||
152 | memset(cmd, 0, len); | |
153 | ||
154 | cmd->hbm_cmd = hbm_cmd; | |
1df629ef | 155 | cmd->host_addr = mei_cl_host_addr(cl); |
d49ed64a | 156 | cmd->me_addr = mei_cl_me_id(cl); |
cd51ed64 TW |
157 | } |
158 | ||
68d1aa65 TW |
159 | /** |
160 | * mei_hbm_cl_write - write simple hbm client message | |
161 | * | |
162 | * @dev: the device structure | |
163 | * @cl: client | |
164 | * @hbm_cmd: host bus message command | |
041330d9 | 165 | * @buf: message buffer |
68d1aa65 | 166 | * @len: buffer length |
ce23139c AU |
167 | * |
168 | * Return: 0 on success, <0 on failure. | |
68d1aa65 | 169 | */ |
3fcbab6c TW |
170 | static inline int mei_hbm_cl_write(struct mei_device *dev, struct mei_cl *cl, |
171 | u8 hbm_cmd, void *buf, size_t len) | |
68d1aa65 | 172 | { |
c0ff9019 | 173 | struct mei_msg_hdr mei_hdr; |
68d1aa65 | 174 | |
c0ff9019 AU |
175 | mei_hbm_hdr(&mei_hdr, len); |
176 | mei_hbm_cl_hdr(cl, hbm_cmd, buf, len); | |
68d1aa65 | 177 | |
98e70866 | 178 | return mei_hbm_write_message(dev, &mei_hdr, buf); |
68d1aa65 TW |
179 | } |
180 | ||
cd51ed64 | 181 | /** |
2af89db1 TW |
182 | * mei_hbm_cl_addr_equal - check if the client's and |
183 | * the message address match | |
cd51ed64 | 184 | * |
2af89db1 TW |
185 | * @cl: client |
186 | * @cmd: hbm client message | |
cd51ed64 | 187 | * |
a8605ea2 | 188 | * Return: true if addresses are the same |
cd51ed64 TW |
189 | */ |
190 | static inline | |
2af89db1 | 191 | bool mei_hbm_cl_addr_equal(struct mei_cl *cl, struct mei_hbm_cl_cmd *cmd) |
cd51ed64 | 192 | { |
1df629ef | 193 | return mei_cl_host_addr(cl) == cmd->host_addr && |
d49ed64a | 194 | mei_cl_me_id(cl) == cmd->me_addr; |
cd51ed64 TW |
195 | } |
196 | ||
2af89db1 TW |
197 | /** |
198 | * mei_hbm_cl_find_by_cmd - find recipient client | |
199 | * | |
200 | * @dev: the device structure | |
201 | * @buf: a buffer with hbm cl command | |
202 | * | |
a8605ea2 | 203 | * Return: the recipient client or NULL if not found |
2af89db1 TW |
204 | */ |
205 | static inline | |
206 | struct mei_cl *mei_hbm_cl_find_by_cmd(struct mei_device *dev, void *buf) | |
207 | { | |
208 | struct mei_hbm_cl_cmd *cmd = (struct mei_hbm_cl_cmd *)buf; | |
209 | struct mei_cl *cl; | |
210 | ||
211 | list_for_each_entry(cl, &dev->file_list, link) | |
212 | if (mei_hbm_cl_addr_equal(cl, cmd)) | |
213 | return cl; | |
214 | return NULL; | |
215 | } | |
216 | ||
217 | ||
cb02efc3 AU |
218 | /** |
219 | * mei_hbm_start_wait - wait for start response message. | |
220 | * | |
221 | * @dev: the device structure | |
222 | * | |
a8605ea2 | 223 | * Return: 0 on success and < 0 on failure |
cb02efc3 | 224 | */ |
9b0d5efc TW |
225 | int mei_hbm_start_wait(struct mei_device *dev) |
226 | { | |
227 | int ret; | |
cb02efc3 AU |
228 | |
229 | if (dev->hbm_state > MEI_HBM_STARTING) | |
9b0d5efc TW |
230 | return 0; |
231 | ||
232 | mutex_unlock(&dev->device_lock); | |
cb02efc3 AU |
233 | ret = wait_event_timeout(dev->wait_hbm_start, |
234 | dev->hbm_state != MEI_HBM_STARTING, | |
7d93e58d | 235 | mei_secs_to_jiffies(MEI_HBM_TIMEOUT)); |
9b0d5efc TW |
236 | mutex_lock(&dev->device_lock); |
237 | ||
cb02efc3 | 238 | if (ret == 0 && (dev->hbm_state <= MEI_HBM_STARTING)) { |
9b0d5efc | 239 | dev->hbm_state = MEI_HBM_IDLE; |
2bf94cab | 240 | dev_err(dev->dev, "waiting for mei start failed\n"); |
7ca96aa2 | 241 | return -ETIME; |
9b0d5efc TW |
242 | } |
243 | return 0; | |
244 | } | |
245 | ||
bb1b0133 | 246 | /** |
8120e720 | 247 | * mei_hbm_start_req - sends start request message. |
bb1b0133 TW |
248 | * |
249 | * @dev: the device structure | |
544f9460 | 250 | * |
a8605ea2 | 251 | * Return: 0 on success and < 0 on failure |
bb1b0133 | 252 | */ |
9b0d5efc | 253 | int mei_hbm_start_req(struct mei_device *dev) |
bb1b0133 | 254 | { |
c0ff9019 | 255 | struct mei_msg_hdr mei_hdr; |
df4b37bc | 256 | struct hbm_host_version_request req; |
544f9460 | 257 | int ret; |
bb1b0133 | 258 | |
5ca2d388 TW |
259 | mei_hbm_reset(dev); |
260 | ||
df4b37bc | 261 | mei_hbm_hdr(&mei_hdr, sizeof(req)); |
bb1b0133 TW |
262 | |
263 | /* host start message */ | |
df4b37bc TW |
264 | memset(&req, 0, sizeof(req)); |
265 | req.hbm_cmd = HOST_START_REQ_CMD; | |
266 | req.host_version.major_version = HBM_MAJOR_VERSION; | |
267 | req.host_version.minor_version = HBM_MINOR_VERSION; | |
bb1b0133 | 268 | |
9b0d5efc | 269 | dev->hbm_state = MEI_HBM_IDLE; |
df4b37bc | 270 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); |
544f9460 | 271 | if (ret) { |
2bf94cab | 272 | dev_err(dev->dev, "version message write failed: ret = %d\n", |
544f9460 TW |
273 | ret); |
274 | return ret; | |
bb1b0133 | 275 | } |
544f9460 | 276 | |
cb02efc3 | 277 | dev->hbm_state = MEI_HBM_STARTING; |
bb1b0133 | 278 | dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; |
1892fc2e | 279 | mei_schedule_stall_timer(dev); |
9b0d5efc | 280 | return 0; |
bb1b0133 TW |
281 | } |
282 | ||
c55bf542 TW |
283 | /** |
284 | * mei_hbm_dma_setup_req() - setup DMA request | |
285 | * @dev: the device structure | |
286 | * | |
287 | * Return: 0 on success and < 0 on failure | |
288 | */ | |
289 | static int mei_hbm_dma_setup_req(struct mei_device *dev) | |
290 | { | |
291 | struct mei_msg_hdr mei_hdr; | |
292 | struct hbm_dma_setup_request req; | |
c55bf542 TW |
293 | unsigned int i; |
294 | int ret; | |
295 | ||
df4b37bc | 296 | mei_hbm_hdr(&mei_hdr, sizeof(req)); |
c55bf542 | 297 | |
df4b37bc | 298 | memset(&req, 0, sizeof(req)); |
c55bf542 TW |
299 | req.hbm_cmd = MEI_HBM_DMA_SETUP_REQ_CMD; |
300 | for (i = 0; i < DMA_DSCR_NUM; i++) { | |
301 | phys_addr_t paddr; | |
302 | ||
303 | paddr = dev->dr_dscr[i].daddr; | |
304 | req.dma_dscr[i].addr_hi = upper_32_bits(paddr); | |
305 | req.dma_dscr[i].addr_lo = lower_32_bits(paddr); | |
306 | req.dma_dscr[i].size = dev->dr_dscr[i].size; | |
307 | } | |
308 | ||
2513eb0d TW |
309 | mei_dma_ring_reset(dev); |
310 | ||
c55bf542 TW |
311 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); |
312 | if (ret) { | |
313 | dev_err(dev->dev, "dma setup request write failed: ret = %d.\n", | |
314 | ret); | |
315 | return ret; | |
316 | } | |
317 | ||
318 | dev->hbm_state = MEI_HBM_DR_SETUP; | |
319 | dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; | |
320 | mei_schedule_stall_timer(dev); | |
321 | return 0; | |
322 | } | |
323 | ||
e5cab1f9 AU |
324 | /** |
325 | * mei_hbm_capabilities_req - request capabilities | |
326 | * | |
327 | * @dev: the device structure | |
328 | * | |
329 | * Return: 0 on success and < 0 on failure | |
330 | */ | |
331 | static int mei_hbm_capabilities_req(struct mei_device *dev) | |
332 | { | |
333 | struct mei_msg_hdr mei_hdr; | |
334 | struct hbm_capability_request req; | |
335 | int ret; | |
336 | ||
337 | mei_hbm_hdr(&mei_hdr, sizeof(req)); | |
338 | ||
339 | memset(&req, 0, sizeof(req)); | |
340 | req.hbm_cmd = MEI_HBM_CAPABILITIES_REQ_CMD; | |
beb4e1e5 | 341 | if (dev->hbm_f_vt_supported) |
b7a48041 AU |
342 | req.capability_requested[0] |= HBM_CAP_VT; |
343 | if (dev->hbm_f_cd_supported) | |
344 | req.capability_requested[0] |= HBM_CAP_CD; | |
e5cab1f9 AU |
345 | |
346 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); | |
347 | if (ret) { | |
348 | dev_err(dev->dev, | |
349 | "capabilities request write failed: ret = %d.\n", ret); | |
350 | return ret; | |
351 | } | |
352 | ||
353 | dev->hbm_state = MEI_HBM_CAP_SETUP; | |
354 | dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; | |
355 | mei_schedule_stall_timer(dev); | |
356 | return 0; | |
357 | } | |
358 | ||
99c2658f | 359 | /** |
8120e720 | 360 | * mei_hbm_enum_clients_req - sends enumeration client request message. |
bb1b0133 TW |
361 | * |
362 | * @dev: the device structure | |
363 | * | |
a8605ea2 | 364 | * Return: 0 on success and < 0 on failure |
bb1b0133 | 365 | */ |
544f9460 | 366 | static int mei_hbm_enum_clients_req(struct mei_device *dev) |
bb1b0133 | 367 | { |
c0ff9019 | 368 | struct mei_msg_hdr mei_hdr; |
df4b37bc | 369 | struct hbm_host_enum_request req; |
544f9460 TW |
370 | int ret; |
371 | ||
bb1b0133 | 372 | /* enumerate clients */ |
df4b37bc | 373 | mei_hbm_hdr(&mei_hdr, sizeof(req)); |
bb1b0133 | 374 | |
df4b37bc TW |
375 | memset(&req, 0, sizeof(req)); |
376 | req.hbm_cmd = HOST_ENUM_REQ_CMD; | |
377 | req.flags |= dev->hbm_f_dc_supported ? MEI_HBM_ENUM_F_ALLOW_ADD : 0; | |
378 | req.flags |= dev->hbm_f_ie_supported ? | |
c0ff9019 | 379 | MEI_HBM_ENUM_F_IMMEDIATE_ENUM : 0; |
bb1b0133 | 380 | |
df4b37bc | 381 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); |
544f9460 | 382 | if (ret) { |
2bf94cab | 383 | dev_err(dev->dev, "enumeration request write failed: ret = %d.\n", |
544f9460 TW |
384 | ret); |
385 | return ret; | |
bb1b0133 | 386 | } |
9b0d5efc | 387 | dev->hbm_state = MEI_HBM_ENUM_CLIENTS; |
bb1b0133 | 388 | dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; |
1892fc2e | 389 | mei_schedule_stall_timer(dev); |
544f9460 | 390 | return 0; |
bb1b0133 TW |
391 | } |
392 | ||
99c2658f | 393 | /** |
5ca2d388 TW |
394 | * mei_hbm_me_cl_add - add new me client to the list |
395 | * | |
396 | * @dev: the device structure | |
397 | * @res: hbm property response | |
398 | * | |
a8605ea2 | 399 | * Return: 0 on success and -ENOMEM on allocation failure |
5ca2d388 TW |
400 | */ |
401 | ||
402 | static int mei_hbm_me_cl_add(struct mei_device *dev, | |
403 | struct hbm_props_response *res) | |
404 | { | |
405 | struct mei_me_client *me_cl; | |
79563db9 TW |
406 | const uuid_le *uuid = &res->client_properties.protocol_name; |
407 | ||
408 | mei_me_cl_rm_by_uuid(dev, uuid); | |
5ca2d388 | 409 | |
df4b37bc | 410 | me_cl = kzalloc(sizeof(*me_cl), GFP_KERNEL); |
5ca2d388 TW |
411 | if (!me_cl) |
412 | return -ENOMEM; | |
413 | ||
79563db9 TW |
414 | mei_me_cl_init(me_cl); |
415 | ||
5ca2d388 TW |
416 | me_cl->props = res->client_properties; |
417 | me_cl->client_id = res->me_addr; | |
4034b81b | 418 | me_cl->tx_flow_ctrl_creds = 0; |
5ca2d388 | 419 | |
b7d88514 TW |
420 | mei_me_cl_add(dev, me_cl); |
421 | ||
5ca2d388 TW |
422 | return 0; |
423 | } | |
424 | ||
70ef835c TW |
425 | /** |
426 | * mei_hbm_add_cl_resp - send response to fw on client add request | |
427 | * | |
428 | * @dev: the device structure | |
429 | * @addr: me address | |
430 | * @status: response status | |
431 | * | |
432 | * Return: 0 on success and < 0 on failure | |
433 | */ | |
434 | static int mei_hbm_add_cl_resp(struct mei_device *dev, u8 addr, u8 status) | |
435 | { | |
c0ff9019 AU |
436 | struct mei_msg_hdr mei_hdr; |
437 | struct hbm_add_client_response resp; | |
70ef835c TW |
438 | int ret; |
439 | ||
440 | dev_dbg(dev->dev, "adding client response\n"); | |
441 | ||
df4b37bc | 442 | mei_hbm_hdr(&mei_hdr, sizeof(resp)); |
70ef835c | 443 | |
df4b37bc | 444 | memset(&resp, 0, sizeof(resp)); |
c0ff9019 AU |
445 | resp.hbm_cmd = MEI_HBM_ADD_CLIENT_RES_CMD; |
446 | resp.me_addr = addr; | |
447 | resp.status = status; | |
70ef835c | 448 | |
98e70866 | 449 | ret = mei_hbm_write_message(dev, &mei_hdr, &resp); |
70ef835c TW |
450 | if (ret) |
451 | dev_err(dev->dev, "add client response write failed: ret = %d\n", | |
452 | ret); | |
453 | return ret; | |
454 | } | |
455 | ||
456 | /** | |
457 | * mei_hbm_fw_add_cl_req - request from the fw to add a client | |
458 | * | |
459 | * @dev: the device structure | |
460 | * @req: add client request | |
461 | * | |
462 | * Return: 0 on success and < 0 on failure | |
463 | */ | |
464 | static int mei_hbm_fw_add_cl_req(struct mei_device *dev, | |
465 | struct hbm_add_client_request *req) | |
466 | { | |
467 | int ret; | |
468 | u8 status = MEI_HBMS_SUCCESS; | |
469 | ||
470 | BUILD_BUG_ON(sizeof(struct hbm_add_client_request) != | |
471 | sizeof(struct hbm_props_response)); | |
472 | ||
473 | ret = mei_hbm_me_cl_add(dev, (struct hbm_props_response *)req); | |
474 | if (ret) | |
475 | status = !MEI_HBMS_SUCCESS; | |
476 | ||
a816a00e AU |
477 | if (dev->dev_state == MEI_DEV_ENABLED) |
478 | schedule_work(&dev->bus_rescan_work); | |
479 | ||
70ef835c TW |
480 | return mei_hbm_add_cl_resp(dev, req->me_addr, status); |
481 | } | |
482 | ||
965ae37a TW |
483 | /** |
484 | * mei_hbm_cl_notify_req - send notification request | |
485 | * | |
486 | * @dev: the device structure | |
487 | * @cl: a client to disconnect from | |
488 | * @start: true for start false for stop | |
489 | * | |
490 | * Return: 0 on success and -EIO on write failure | |
491 | */ | |
492 | int mei_hbm_cl_notify_req(struct mei_device *dev, | |
493 | struct mei_cl *cl, u8 start) | |
494 | { | |
495 | ||
c0ff9019 AU |
496 | struct mei_msg_hdr mei_hdr; |
497 | struct hbm_notification_request req; | |
965ae37a TW |
498 | int ret; |
499 | ||
df4b37bc TW |
500 | mei_hbm_hdr(&mei_hdr, sizeof(req)); |
501 | mei_hbm_cl_hdr(cl, MEI_HBM_NOTIFY_REQ_CMD, &req, sizeof(req)); | |
965ae37a | 502 | |
c0ff9019 | 503 | req.start = start; |
965ae37a | 504 | |
98e70866 | 505 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); |
965ae37a TW |
506 | if (ret) |
507 | dev_err(dev->dev, "notify request failed: ret = %d\n", ret); | |
508 | ||
509 | return ret; | |
510 | } | |
511 | ||
512 | /** | |
513 | * notify_res_to_fop - convert notification response to the proper | |
514 | * notification FOP | |
515 | * | |
516 | * @cmd: client notification start response command | |
517 | * | |
518 | * Return: MEI_FOP_NOTIFY_START or MEI_FOP_NOTIFY_STOP; | |
519 | */ | |
520 | static inline enum mei_cb_file_ops notify_res_to_fop(struct mei_hbm_cl_cmd *cmd) | |
521 | { | |
522 | struct hbm_notification_response *rs = | |
523 | (struct hbm_notification_response *)cmd; | |
524 | ||
51678ccb | 525 | return mei_cl_notify_req2fop(rs->start); |
965ae37a TW |
526 | } |
527 | ||
528 | /** | |
529 | * mei_hbm_cl_notify_start_res - update the client state according | |
530 | * notify start response | |
531 | * | |
532 | * @dev: the device structure | |
533 | * @cl: mei host client | |
534 | * @cmd: client notification start response command | |
535 | */ | |
536 | static void mei_hbm_cl_notify_start_res(struct mei_device *dev, | |
537 | struct mei_cl *cl, | |
538 | struct mei_hbm_cl_cmd *cmd) | |
539 | { | |
540 | struct hbm_notification_response *rs = | |
541 | (struct hbm_notification_response *)cmd; | |
542 | ||
543 | cl_dbg(dev, cl, "hbm: notify start response status=%d\n", rs->status); | |
544 | ||
545 | if (rs->status == MEI_HBMS_SUCCESS || | |
546 | rs->status == MEI_HBMS_ALREADY_STARTED) { | |
547 | cl->notify_en = true; | |
548 | cl->status = 0; | |
549 | } else { | |
550 | cl->status = -EINVAL; | |
551 | } | |
552 | } | |
553 | ||
554 | /** | |
555 | * mei_hbm_cl_notify_stop_res - update the client state according | |
556 | * notify stop response | |
557 | * | |
558 | * @dev: the device structure | |
559 | * @cl: mei host client | |
560 | * @cmd: client notification stop response command | |
561 | */ | |
562 | static void mei_hbm_cl_notify_stop_res(struct mei_device *dev, | |
563 | struct mei_cl *cl, | |
564 | struct mei_hbm_cl_cmd *cmd) | |
565 | { | |
566 | struct hbm_notification_response *rs = | |
567 | (struct hbm_notification_response *)cmd; | |
568 | ||
569 | cl_dbg(dev, cl, "hbm: notify stop response status=%d\n", rs->status); | |
570 | ||
571 | if (rs->status == MEI_HBMS_SUCCESS || | |
572 | rs->status == MEI_HBMS_NOT_STARTED) { | |
573 | cl->notify_en = false; | |
574 | cl->status = 0; | |
575 | } else { | |
576 | /* TODO: spec is not clear yet about other possible issues */ | |
577 | cl->status = -EINVAL; | |
578 | } | |
579 | } | |
580 | ||
581 | /** | |
582 | * mei_hbm_cl_notify - signal notification event | |
583 | * | |
584 | * @dev: the device structure | |
585 | * @cmd: notification client message | |
586 | */ | |
587 | static void mei_hbm_cl_notify(struct mei_device *dev, | |
588 | struct mei_hbm_cl_cmd *cmd) | |
589 | { | |
590 | struct mei_cl *cl; | |
591 | ||
592 | cl = mei_hbm_cl_find_by_cmd(dev, cmd); | |
237092bf TW |
593 | if (cl) |
594 | mei_cl_notify(cl); | |
965ae37a TW |
595 | } |
596 | ||
369aea84 AU |
597 | /** |
598 | * mei_hbm_cl_dma_map_req - send client dma map request | |
599 | * | |
600 | * @dev: the device structure | |
601 | * @cl: mei host client | |
602 | * | |
603 | * Return: 0 on success and -EIO on write failure | |
604 | */ | |
605 | int mei_hbm_cl_dma_map_req(struct mei_device *dev, struct mei_cl *cl) | |
606 | { | |
607 | struct mei_msg_hdr mei_hdr; | |
608 | struct hbm_client_dma_map_request req; | |
609 | int ret; | |
610 | ||
611 | mei_hbm_hdr(&mei_hdr, sizeof(req)); | |
612 | ||
613 | memset(&req, 0, sizeof(req)); | |
614 | ||
615 | req.hbm_cmd = MEI_HBM_CLIENT_DMA_MAP_REQ_CMD; | |
616 | req.client_buffer_id = cl->dma.buffer_id; | |
617 | req.address_lsb = lower_32_bits(cl->dma.daddr); | |
618 | req.address_msb = upper_32_bits(cl->dma.daddr); | |
619 | req.size = cl->dma.size; | |
620 | ||
621 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); | |
622 | if (ret) | |
623 | dev_err(dev->dev, "dma map request failed: ret = %d\n", ret); | |
624 | ||
625 | return ret; | |
626 | } | |
627 | ||
628 | /** | |
629 | * mei_hbm_cl_dma_unmap_req - send client dma unmap request | |
630 | * | |
631 | * @dev: the device structure | |
632 | * @cl: mei host client | |
633 | * | |
634 | * Return: 0 on success and -EIO on write failure | |
635 | */ | |
636 | int mei_hbm_cl_dma_unmap_req(struct mei_device *dev, struct mei_cl *cl) | |
637 | { | |
638 | struct mei_msg_hdr mei_hdr; | |
639 | struct hbm_client_dma_unmap_request req; | |
640 | int ret; | |
641 | ||
642 | mei_hbm_hdr(&mei_hdr, sizeof(req)); | |
643 | ||
644 | memset(&req, 0, sizeof(req)); | |
645 | ||
646 | req.hbm_cmd = MEI_HBM_CLIENT_DMA_UNMAP_REQ_CMD; | |
647 | req.client_buffer_id = cl->dma.buffer_id; | |
648 | ||
649 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); | |
650 | if (ret) | |
651 | dev_err(dev->dev, "dma unmap request failed: ret = %d\n", ret); | |
652 | ||
653 | return ret; | |
654 | } | |
655 | ||
656 | static void mei_hbm_cl_dma_map_res(struct mei_device *dev, | |
657 | struct hbm_client_dma_response *res) | |
658 | { | |
659 | struct mei_cl *cl; | |
660 | struct mei_cl_cb *cb, *next; | |
661 | ||
662 | cl = NULL; | |
663 | list_for_each_entry_safe(cb, next, &dev->ctrl_rd_list, list) { | |
664 | if (cb->fop_type != MEI_FOP_DMA_MAP) | |
665 | continue; | |
666 | if (!cb->cl->dma.buffer_id || cb->cl->dma_mapped) | |
667 | continue; | |
668 | ||
669 | cl = cb->cl; | |
670 | break; | |
671 | } | |
672 | if (!cl) | |
673 | return; | |
674 | ||
675 | dev_dbg(dev->dev, "cl dma map result = %d\n", res->status); | |
676 | cl->status = res->status; | |
677 | if (!cl->status) | |
678 | cl->dma_mapped = 1; | |
679 | wake_up(&cl->wait); | |
680 | } | |
681 | ||
682 | static void mei_hbm_cl_dma_unmap_res(struct mei_device *dev, | |
683 | struct hbm_client_dma_response *res) | |
684 | { | |
685 | struct mei_cl *cl; | |
686 | struct mei_cl_cb *cb, *next; | |
687 | ||
688 | cl = NULL; | |
689 | list_for_each_entry_safe(cb, next, &dev->ctrl_rd_list, list) { | |
690 | if (cb->fop_type != MEI_FOP_DMA_UNMAP) | |
691 | continue; | |
692 | if (!cb->cl->dma.buffer_id || !cb->cl->dma_mapped) | |
693 | continue; | |
694 | ||
695 | cl = cb->cl; | |
696 | break; | |
697 | } | |
698 | if (!cl) | |
699 | return; | |
700 | ||
701 | dev_dbg(dev->dev, "cl dma unmap result = %d\n", res->status); | |
702 | cl->status = res->status; | |
703 | if (!cl->status) | |
704 | cl->dma_mapped = 0; | |
705 | wake_up(&cl->wait); | |
706 | } | |
707 | ||
8120e720 | 708 | /** |
393b148f | 709 | * mei_hbm_prop_req - request property for a single client |
8120e720 TW |
710 | * |
711 | * @dev: the device structure | |
cc25aa94 | 712 | * @start_idx: client index to start search |
8120e720 | 713 | * |
a8605ea2 | 714 | * Return: 0 on success and < 0 on failure |
8120e720 | 715 | */ |
cc25aa94 | 716 | static int mei_hbm_prop_req(struct mei_device *dev, unsigned long start_idx) |
bb1b0133 | 717 | { |
c0ff9019 | 718 | struct mei_msg_hdr mei_hdr; |
df4b37bc | 719 | struct hbm_props_request req; |
cc25aa94 | 720 | unsigned long addr; |
544f9460 | 721 | int ret; |
bb1b0133 | 722 | |
cc25aa94 | 723 | addr = find_next_bit(dev->me_clients_map, MEI_CLIENTS_MAX, start_idx); |
bb1b0133 TW |
724 | |
725 | /* We got all client properties */ | |
cc25aa94 | 726 | if (addr == MEI_CLIENTS_MAX) { |
9b0d5efc | 727 | dev->hbm_state = MEI_HBM_STARTED; |
025fb792 | 728 | mei_host_client_init(dev); |
bb1b0133 TW |
729 | return 0; |
730 | } | |
731 | ||
df4b37bc | 732 | mei_hbm_hdr(&mei_hdr, sizeof(req)); |
bb1b0133 | 733 | |
df4b37bc | 734 | memset(&req, 0, sizeof(req)); |
bb1b0133 | 735 | |
df4b37bc TW |
736 | req.hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD; |
737 | req.me_addr = addr; | |
bb1b0133 | 738 | |
df4b37bc | 739 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); |
544f9460 | 740 | if (ret) { |
2bf94cab | 741 | dev_err(dev->dev, "properties request write failed: ret = %d\n", |
544f9460 TW |
742 | ret); |
743 | return ret; | |
bb1b0133 TW |
744 | } |
745 | ||
746 | dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT; | |
1892fc2e | 747 | mei_schedule_stall_timer(dev); |
bb1b0133 TW |
748 | |
749 | return 0; | |
750 | } | |
751 | ||
99c2658f | 752 | /** |
4fcbc99b TW |
753 | * mei_hbm_pg - sends pg command |
754 | * | |
755 | * @dev: the device structure | |
756 | * @pg_cmd: the pg command code | |
757 | * | |
a8605ea2 | 758 | * Return: -EIO on write failure |
bae1cc7d | 759 | * -EOPNOTSUPP if the operation is not supported by the protocol |
4fcbc99b TW |
760 | */ |
761 | int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd) | |
762 | { | |
c0ff9019 AU |
763 | struct mei_msg_hdr mei_hdr; |
764 | struct hbm_power_gate req; | |
4fcbc99b TW |
765 | int ret; |
766 | ||
bae1cc7d TW |
767 | if (!dev->hbm_f_pg_supported) |
768 | return -EOPNOTSUPP; | |
769 | ||
df4b37bc | 770 | mei_hbm_hdr(&mei_hdr, sizeof(req)); |
4fcbc99b | 771 | |
df4b37bc | 772 | memset(&req, 0, sizeof(req)); |
c0ff9019 | 773 | req.hbm_cmd = pg_cmd; |
4fcbc99b | 774 | |
98e70866 | 775 | ret = mei_hbm_write_message(dev, &mei_hdr, &req); |
4fcbc99b | 776 | if (ret) |
2bf94cab | 777 | dev_err(dev->dev, "power gate command write failed.\n"); |
4fcbc99b TW |
778 | return ret; |
779 | } | |
780 | EXPORT_SYMBOL_GPL(mei_hbm_pg); | |
781 | ||
e46f1874 | 782 | /** |
6bb948c9 | 783 | * mei_hbm_stop_req - send stop request message |
e46f1874 | 784 | * |
a8605ea2 | 785 | * @dev: mei device |
6bb948c9 | 786 | * |
a8605ea2 | 787 | * Return: -EIO on write failure |
e46f1874 | 788 | */ |
6bb948c9 | 789 | static int mei_hbm_stop_req(struct mei_device *dev) |
e46f1874 | 790 | { |
c0ff9019 AU |
791 | struct mei_msg_hdr mei_hdr; |
792 | struct hbm_host_stop_request req; | |
e46f1874 | 793 | |
df4b37bc | 794 | mei_hbm_hdr(&mei_hdr, sizeof(req)); |
e46f1874 | 795 | |
df4b37bc | 796 | memset(&req, 0, sizeof(req)); |
c0ff9019 AU |
797 | req.hbm_cmd = HOST_STOP_REQ_CMD; |
798 | req.reason = DRIVER_STOP_REQUEST; | |
6bb948c9 | 799 | |
98e70866 | 800 | return mei_hbm_write_message(dev, &mei_hdr, &req); |
e46f1874 TW |
801 | } |
802 | ||
bb1b0133 | 803 | /** |
83ce0741 | 804 | * mei_hbm_cl_flow_control_req - sends flow control request. |
bb1b0133 TW |
805 | * |
806 | * @dev: the device structure | |
8120e720 | 807 | * @cl: client info |
bb1b0133 | 808 | * |
a8605ea2 | 809 | * Return: -EIO on write failure |
bb1b0133 | 810 | */ |
8120e720 | 811 | int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl) |
bb1b0133 | 812 | { |
3fcbab6c | 813 | struct hbm_flow_control req; |
92db1555 | 814 | |
46922186 | 815 | cl_dbg(dev, cl, "sending flow control\n"); |
3fcbab6c TW |
816 | return mei_hbm_cl_write(dev, cl, MEI_FLOW_CONTROL_CMD, |
817 | &req, sizeof(req)); | |
bb1b0133 TW |
818 | } |
819 | ||
6bbda15f | 820 | /** |
4034b81b | 821 | * mei_hbm_add_single_tx_flow_ctrl_creds - adds single buffer credentials. |
6bbda15f | 822 | * |
393b148f | 823 | * @dev: the device structure |
4034b81b | 824 | * @fctrl: flow control response bus message |
12d00665 | 825 | * |
a8605ea2 | 826 | * Return: 0 on success, < 0 otherwise |
6bbda15f | 827 | */ |
4034b81b TW |
828 | static int mei_hbm_add_single_tx_flow_ctrl_creds(struct mei_device *dev, |
829 | struct hbm_flow_control *fctrl) | |
6bbda15f | 830 | { |
12d00665 | 831 | struct mei_me_client *me_cl; |
79563db9 | 832 | int rets; |
12d00665 | 833 | |
4034b81b | 834 | me_cl = mei_me_cl_by_id(dev, fctrl->me_addr); |
d320832f | 835 | if (!me_cl) { |
4034b81b | 836 | dev_err(dev->dev, "no such me client %d\n", fctrl->me_addr); |
d320832f | 837 | return -ENOENT; |
12d00665 AU |
838 | } |
839 | ||
79563db9 TW |
840 | if (WARN_ON(me_cl->props.single_recv_buf == 0)) { |
841 | rets = -EINVAL; | |
842 | goto out; | |
843 | } | |
d320832f | 844 | |
4034b81b | 845 | me_cl->tx_flow_ctrl_creds++; |
2bf94cab | 846 | dev_dbg(dev->dev, "recv flow ctrl msg ME %d (single) creds = %d.\n", |
4034b81b | 847 | fctrl->me_addr, me_cl->tx_flow_ctrl_creds); |
12d00665 | 848 | |
79563db9 TW |
849 | rets = 0; |
850 | out: | |
851 | mei_me_cl_put(me_cl); | |
852 | return rets; | |
6bbda15f TW |
853 | } |
854 | ||
855 | /** | |
09f8c33a | 856 | * mei_hbm_cl_tx_flow_ctrl_creds_res - flow control response from me |
6bbda15f TW |
857 | * |
858 | * @dev: the device structure | |
4034b81b | 859 | * @fctrl: flow control response bus message |
6bbda15f | 860 | */ |
4034b81b TW |
861 | static void mei_hbm_cl_tx_flow_ctrl_creds_res(struct mei_device *dev, |
862 | struct hbm_flow_control *fctrl) | |
6bbda15f | 863 | { |
31f88f57 | 864 | struct mei_cl *cl; |
6bbda15f | 865 | |
4034b81b | 866 | if (!fctrl->host_addr) { |
6bbda15f | 867 | /* single receive buffer */ |
4034b81b | 868 | mei_hbm_add_single_tx_flow_ctrl_creds(dev, fctrl); |
6bbda15f TW |
869 | return; |
870 | } | |
871 | ||
4034b81b | 872 | cl = mei_hbm_cl_find_by_cmd(dev, fctrl); |
2af89db1 | 873 | if (cl) { |
4034b81b | 874 | cl->tx_flow_ctrl_creds++; |
2af89db1 | 875 | cl_dbg(dev, cl, "flow control creds = %d.\n", |
4034b81b | 876 | cl->tx_flow_ctrl_creds); |
6bbda15f TW |
877 | } |
878 | } | |
879 | ||
880 | ||
bb1b0133 | 881 | /** |
8120e720 | 882 | * mei_hbm_cl_disconnect_req - sends disconnect message to fw. |
bb1b0133 TW |
883 | * |
884 | * @dev: the device structure | |
8120e720 | 885 | * @cl: a client to disconnect from |
bb1b0133 | 886 | * |
a8605ea2 | 887 | * Return: -EIO on write failure |
bb1b0133 | 888 | */ |
8120e720 | 889 | int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl) |
bb1b0133 | 890 | { |
3fcbab6c | 891 | struct hbm_client_connect_request req; |
92db1555 | 892 | |
3fcbab6c TW |
893 | return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_REQ_CMD, |
894 | &req, sizeof(req)); | |
bb1b0133 TW |
895 | } |
896 | ||
6bb948c9 TW |
897 | /** |
898 | * mei_hbm_cl_disconnect_rsp - sends disconnect respose to the FW | |
899 | * | |
900 | * @dev: the device structure | |
901 | * @cl: a client to disconnect from | |
902 | * | |
a8605ea2 | 903 | * Return: -EIO on write failure |
6bb948c9 TW |
904 | */ |
905 | int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl) | |
906 | { | |
3fcbab6c | 907 | struct hbm_client_connect_response resp; |
92db1555 | 908 | |
3fcbab6c TW |
909 | return mei_hbm_cl_write(dev, cl, CLIENT_DISCONNECT_RES_CMD, |
910 | &resp, sizeof(resp)); | |
6bb948c9 TW |
911 | } |
912 | ||
6bbda15f | 913 | /** |
12f45ed4 TW |
914 | * mei_hbm_cl_disconnect_res - update the client state according |
915 | * disconnect response | |
6bbda15f | 916 | * |
d512c209 | 917 | * @dev: the device structure |
12f45ed4 TW |
918 | * @cl: mei host client |
919 | * @cmd: disconnect client response host bus message | |
6bbda15f | 920 | */ |
d512c209 | 921 | static void mei_hbm_cl_disconnect_res(struct mei_device *dev, struct mei_cl *cl, |
12f45ed4 | 922 | struct mei_hbm_cl_cmd *cmd) |
6bbda15f | 923 | { |
12f45ed4 TW |
924 | struct hbm_client_connect_response *rs = |
925 | (struct hbm_client_connect_response *)cmd; | |
6bbda15f | 926 | |
d512c209 | 927 | cl_dbg(dev, cl, "hbm: disconnect response status=%d\n", rs->status); |
6bbda15f | 928 | |
12f45ed4 | 929 | if (rs->status == MEI_CL_DISCONN_SUCCESS) |
3c666182 | 930 | cl->state = MEI_FILE_DISCONNECT_REPLY; |
12f45ed4 | 931 | cl->status = 0; |
6bbda15f TW |
932 | } |
933 | ||
bb1b0133 | 934 | /** |
8120e720 | 935 | * mei_hbm_cl_connect_req - send connection request to specific me client |
bb1b0133 TW |
936 | * |
937 | * @dev: the device structure | |
8120e720 | 938 | * @cl: a client to connect to |
bb1b0133 | 939 | * |
a8605ea2 | 940 | * Return: -EIO on write failure |
bb1b0133 | 941 | */ |
8120e720 | 942 | int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl) |
bb1b0133 | 943 | { |
3fcbab6c | 944 | struct hbm_client_connect_request req; |
92db1555 | 945 | |
3fcbab6c TW |
946 | return mei_hbm_cl_write(dev, cl, CLIENT_CONNECT_REQ_CMD, |
947 | &req, sizeof(req)); | |
bb1b0133 TW |
948 | } |
949 | ||
6bbda15f | 950 | /** |
12f45ed4 TW |
951 | * mei_hbm_cl_connect_res - update the client state according |
952 | * connection response | |
6bbda15f | 953 | * |
d512c209 | 954 | * @dev: the device structure |
12f45ed4 TW |
955 | * @cl: mei host client |
956 | * @cmd: connect client response host bus message | |
6bbda15f | 957 | */ |
d512c209 | 958 | static void mei_hbm_cl_connect_res(struct mei_device *dev, struct mei_cl *cl, |
12f45ed4 | 959 | struct mei_hbm_cl_cmd *cmd) |
6bbda15f | 960 | { |
12f45ed4 TW |
961 | struct hbm_client_connect_response *rs = |
962 | (struct hbm_client_connect_response *)cmd; | |
6bbda15f | 963 | |
d512c209 | 964 | cl_dbg(dev, cl, "hbm: connect response status=%s\n", |
285e2996 | 965 | mei_cl_conn_status_str(rs->status)); |
6bbda15f | 966 | |
12f45ed4 TW |
967 | if (rs->status == MEI_CL_CONN_SUCCESS) |
968 | cl->state = MEI_FILE_CONNECTED; | |
70ef835c | 969 | else { |
3c666182 | 970 | cl->state = MEI_FILE_DISCONNECT_REPLY; |
a816a00e | 971 | if (rs->status == MEI_CL_CONN_NOT_FOUND) { |
70ef835c | 972 | mei_me_cl_del(dev, cl->me_cl); |
a816a00e AU |
973 | if (dev->dev_state == MEI_DEV_ENABLED) |
974 | schedule_work(&dev->bus_rescan_work); | |
975 | } | |
70ef835c | 976 | } |
12f45ed4 TW |
977 | cl->status = mei_cl_conn_status_to_errno(rs->status); |
978 | } | |
979 | ||
980 | /** | |
981 | * mei_hbm_cl_res - process hbm response received on behalf | |
982 | * an client | |
983 | * | |
984 | * @dev: the device structure | |
985 | * @rs: hbm client message | |
986 | * @fop_type: file operation type | |
987 | */ | |
988 | static void mei_hbm_cl_res(struct mei_device *dev, | |
989 | struct mei_hbm_cl_cmd *rs, | |
990 | enum mei_cb_file_ops fop_type) | |
991 | { | |
992 | struct mei_cl *cl; | |
993 | struct mei_cl_cb *cb, *next; | |
6bbda15f | 994 | |
12f45ed4 | 995 | cl = NULL; |
962ff7bc | 996 | list_for_each_entry_safe(cb, next, &dev->ctrl_rd_list, list) { |
6bbda15f | 997 | |
64092858 | 998 | cl = cb->cl; |
6bbda15f | 999 | |
12f45ed4 | 1000 | if (cb->fop_type != fop_type) |
64092858 | 1001 | continue; |
6bbda15f | 1002 | |
64092858 | 1003 | if (mei_hbm_cl_addr_equal(cl, rs)) { |
928fa666 | 1004 | list_del_init(&cb->list); |
64092858 | 1005 | break; |
6bbda15f TW |
1006 | } |
1007 | } | |
64092858 TW |
1008 | |
1009 | if (!cl) | |
1010 | return; | |
1011 | ||
12f45ed4 TW |
1012 | switch (fop_type) { |
1013 | case MEI_FOP_CONNECT: | |
d512c209 | 1014 | mei_hbm_cl_connect_res(dev, cl, rs); |
12f45ed4 TW |
1015 | break; |
1016 | case MEI_FOP_DISCONNECT: | |
d512c209 | 1017 | mei_hbm_cl_disconnect_res(dev, cl, rs); |
12f45ed4 | 1018 | break; |
965ae37a TW |
1019 | case MEI_FOP_NOTIFY_START: |
1020 | mei_hbm_cl_notify_start_res(dev, cl, rs); | |
1021 | break; | |
1022 | case MEI_FOP_NOTIFY_STOP: | |
1023 | mei_hbm_cl_notify_stop_res(dev, cl, rs); | |
1024 | break; | |
12f45ed4 TW |
1025 | default: |
1026 | return; | |
1027 | } | |
1028 | ||
64092858 | 1029 | cl->timer_count = 0; |
12f45ed4 | 1030 | wake_up(&cl->wait); |
6bbda15f TW |
1031 | } |
1032 | ||
1033 | ||
bb1b0133 | 1034 | /** |
83ce0741 AU |
1035 | * mei_hbm_fw_disconnect_req - disconnect request initiated by ME firmware |
1036 | * host sends disconnect response | |
bb1b0133 TW |
1037 | * |
1038 | * @dev: the device structure. | |
8120e720 | 1039 | * @disconnect_req: disconnect request bus message from the me |
6bb948c9 | 1040 | * |
a8605ea2 | 1041 | * Return: -ENOMEM on allocation failure |
bb1b0133 | 1042 | */ |
6bb948c9 | 1043 | static int mei_hbm_fw_disconnect_req(struct mei_device *dev, |
bb1b0133 TW |
1044 | struct hbm_client_connect_request *disconnect_req) |
1045 | { | |
31f88f57 | 1046 | struct mei_cl *cl; |
6bb948c9 | 1047 | struct mei_cl_cb *cb; |
bb1b0133 | 1048 | |
2af89db1 TW |
1049 | cl = mei_hbm_cl_find_by_cmd(dev, disconnect_req); |
1050 | if (cl) { | |
6938c192 | 1051 | cl_warn(dev, cl, "fw disconnect request received\n"); |
3c666182 | 1052 | cl->state = MEI_FILE_DISCONNECTING; |
2af89db1 TW |
1053 | cl->timer_count = 0; |
1054 | ||
3030dc05 TW |
1055 | cb = mei_cl_enqueue_ctrl_wr_cb(cl, 0, MEI_FOP_DISCONNECT_RSP, |
1056 | NULL); | |
2af89db1 TW |
1057 | if (!cb) |
1058 | return -ENOMEM; | |
bb1b0133 | 1059 | } |
6bb948c9 | 1060 | return 0; |
bb1b0133 TW |
1061 | } |
1062 | ||
63f75232 AU |
1063 | /** |
1064 | * mei_hbm_pg_enter_res - PG enter response received | |
1065 | * | |
1066 | * @dev: the device structure. | |
1067 | * | |
1068 | * Return: 0 on success, -EPROTO on state mismatch | |
1069 | */ | |
1070 | static int mei_hbm_pg_enter_res(struct mei_device *dev) | |
1071 | { | |
1072 | if (mei_pg_state(dev) != MEI_PG_OFF || | |
1073 | dev->pg_event != MEI_PG_EVENT_WAIT) { | |
1074 | dev_err(dev->dev, "hbm: pg entry response: state mismatch [%s, %d]\n", | |
1075 | mei_pg_state_str(mei_pg_state(dev)), dev->pg_event); | |
1076 | return -EPROTO; | |
1077 | } | |
1078 | ||
1079 | dev->pg_event = MEI_PG_EVENT_RECEIVED; | |
1080 | wake_up(&dev->wait_pg); | |
1081 | ||
1082 | return 0; | |
1083 | } | |
1084 | ||
859ef2ff AU |
1085 | /** |
1086 | * mei_hbm_pg_resume - process with PG resume | |
1087 | * | |
1088 | * @dev: the device structure. | |
1089 | */ | |
1090 | void mei_hbm_pg_resume(struct mei_device *dev) | |
1091 | { | |
1092 | pm_request_resume(dev->dev); | |
1093 | } | |
1094 | EXPORT_SYMBOL_GPL(mei_hbm_pg_resume); | |
1095 | ||
63f75232 AU |
1096 | /** |
1097 | * mei_hbm_pg_exit_res - PG exit response received | |
1098 | * | |
1099 | * @dev: the device structure. | |
1100 | * | |
1101 | * Return: 0 on success, -EPROTO on state mismatch | |
1102 | */ | |
1103 | static int mei_hbm_pg_exit_res(struct mei_device *dev) | |
1104 | { | |
1105 | if (mei_pg_state(dev) != MEI_PG_ON || | |
1106 | (dev->pg_event != MEI_PG_EVENT_WAIT && | |
1107 | dev->pg_event != MEI_PG_EVENT_IDLE)) { | |
1108 | dev_err(dev->dev, "hbm: pg exit response: state mismatch [%s, %d]\n", | |
1109 | mei_pg_state_str(mei_pg_state(dev)), dev->pg_event); | |
1110 | return -EPROTO; | |
1111 | } | |
1112 | ||
1113 | switch (dev->pg_event) { | |
1114 | case MEI_PG_EVENT_WAIT: | |
1115 | dev->pg_event = MEI_PG_EVENT_RECEIVED; | |
1116 | wake_up(&dev->wait_pg); | |
1117 | break; | |
1118 | case MEI_PG_EVENT_IDLE: | |
1119 | /* | |
1120 | * If the driver is not waiting on this then | |
1121 | * this is HW initiated exit from PG. | |
1122 | * Start runtime pm resume sequence to exit from PG. | |
1123 | */ | |
1124 | dev->pg_event = MEI_PG_EVENT_RECEIVED; | |
859ef2ff | 1125 | mei_hbm_pg_resume(dev); |
63f75232 AU |
1126 | break; |
1127 | default: | |
1128 | WARN(1, "hbm: pg exit response: unexpected pg event = %d\n", | |
1129 | dev->pg_event); | |
1130 | return -EPROTO; | |
1131 | } | |
1132 | ||
1133 | return 0; | |
1134 | } | |
1135 | ||
bae1cc7d | 1136 | /** |
a8605ea2 | 1137 | * mei_hbm_config_features - check what hbm features and commands |
bae1cc7d TW |
1138 | * are supported by the fw |
1139 | * | |
1140 | * @dev: the device structure | |
1141 | */ | |
1142 | static void mei_hbm_config_features(struct mei_device *dev) | |
1143 | { | |
1144 | /* Power Gating Isolation Support */ | |
1145 | dev->hbm_f_pg_supported = 0; | |
1146 | if (dev->version.major_version > HBM_MAJOR_VERSION_PGI) | |
1147 | dev->hbm_f_pg_supported = 1; | |
1148 | ||
1149 | if (dev->version.major_version == HBM_MAJOR_VERSION_PGI && | |
1150 | dev->version.minor_version >= HBM_MINOR_VERSION_PGI) | |
1151 | dev->hbm_f_pg_supported = 1; | |
70ef835c | 1152 | |
37fd0b62 | 1153 | dev->hbm_f_dc_supported = 0; |
70ef835c TW |
1154 | if (dev->version.major_version >= HBM_MAJOR_VERSION_DC) |
1155 | dev->hbm_f_dc_supported = 1; | |
18901357 | 1156 | |
37fd0b62 | 1157 | dev->hbm_f_ie_supported = 0; |
27f476ea AU |
1158 | if (dev->version.major_version >= HBM_MAJOR_VERSION_IE) |
1159 | dev->hbm_f_ie_supported = 1; | |
1160 | ||
18901357 | 1161 | /* disconnect on connect timeout instead of link reset */ |
37fd0b62 | 1162 | dev->hbm_f_dot_supported = 0; |
18901357 AU |
1163 | if (dev->version.major_version >= HBM_MAJOR_VERSION_DOT) |
1164 | dev->hbm_f_dot_supported = 1; | |
4d99877d TW |
1165 | |
1166 | /* Notification Event Support */ | |
37fd0b62 | 1167 | dev->hbm_f_ev_supported = 0; |
4d99877d TW |
1168 | if (dev->version.major_version >= HBM_MAJOR_VERSION_EV) |
1169 | dev->hbm_f_ev_supported = 1; | |
f4e06246 AU |
1170 | |
1171 | /* Fixed Address Client Support */ | |
37fd0b62 | 1172 | dev->hbm_f_fa_supported = 0; |
f4e06246 AU |
1173 | if (dev->version.major_version >= HBM_MAJOR_VERSION_FA) |
1174 | dev->hbm_f_fa_supported = 1; | |
7ee7f45a AU |
1175 | |
1176 | /* OS ver message Support */ | |
37fd0b62 | 1177 | dev->hbm_f_os_supported = 0; |
7ee7f45a AU |
1178 | if (dev->version.major_version >= HBM_MAJOR_VERSION_OS) |
1179 | dev->hbm_f_os_supported = 1; | |
c2bd9fc1 TW |
1180 | |
1181 | /* DMA Ring Support */ | |
37fd0b62 | 1182 | dev->hbm_f_dr_supported = 0; |
c2bd9fc1 TW |
1183 | if (dev->version.major_version > HBM_MAJOR_VERSION_DR || |
1184 | (dev->version.major_version == HBM_MAJOR_VERSION_DR && | |
1185 | dev->version.minor_version >= HBM_MINOR_VERSION_DR)) | |
1186 | dev->hbm_f_dr_supported = 1; | |
e5cab1f9 | 1187 | |
beb4e1e5 AU |
1188 | /* VTag Support */ |
1189 | dev->hbm_f_vt_supported = 0; | |
1190 | if (dev->version.major_version > HBM_MAJOR_VERSION_VT || | |
1191 | (dev->version.major_version == HBM_MAJOR_VERSION_VT && | |
1192 | dev->version.minor_version >= HBM_MINOR_VERSION_VT)) | |
1193 | dev->hbm_f_vt_supported = 1; | |
1194 | ||
1195 | /* Capability message Support */ | |
e5cab1f9 AU |
1196 | dev->hbm_f_cap_supported = 0; |
1197 | if (dev->version.major_version > HBM_MAJOR_VERSION_CAP || | |
1198 | (dev->version.major_version == HBM_MAJOR_VERSION_CAP && | |
1199 | dev->version.minor_version >= HBM_MINOR_VERSION_CAP)) | |
1200 | dev->hbm_f_cap_supported = 1; | |
b7a48041 AU |
1201 | |
1202 | /* Client DMA Support */ | |
1203 | dev->hbm_f_cd_supported = 0; | |
1204 | if (dev->version.major_version > HBM_MAJOR_VERSION_CD || | |
1205 | (dev->version.major_version == HBM_MAJOR_VERSION_CD && | |
1206 | dev->version.minor_version >= HBM_MINOR_VERSION_CD)) | |
1207 | dev->hbm_f_cd_supported = 1; | |
bae1cc7d | 1208 | } |
bb1b0133 | 1209 | |
2c9b48ac TW |
1210 | /** |
1211 | * mei_hbm_version_is_supported - checks whether the driver can | |
1212 | * support the hbm version of the device | |
1213 | * | |
1214 | * @dev: the device structure | |
a8605ea2 | 1215 | * Return: true if driver can support hbm version of the device |
2c9b48ac TW |
1216 | */ |
1217 | bool mei_hbm_version_is_supported(struct mei_device *dev) | |
1218 | { | |
1219 | return (dev->version.major_version < HBM_MAJOR_VERSION) || | |
1220 | (dev->version.major_version == HBM_MAJOR_VERSION && | |
1221 | dev->version.minor_version <= HBM_MINOR_VERSION); | |
1222 | } | |
1223 | ||
bb1b0133 TW |
1224 | /** |
1225 | * mei_hbm_dispatch - bottom half read routine after ISR to | |
1226 | * handle the read bus message cmd processing. | |
1227 | * | |
1228 | * @dev: the device structure | |
a8605ea2 | 1229 | * @hdr: header of bus message |
544f9460 | 1230 | * |
a8605ea2 | 1231 | * Return: 0 on success and < 0 on failure |
bb1b0133 | 1232 | */ |
544f9460 | 1233 | int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) |
bb1b0133 TW |
1234 | { |
1235 | struct mei_bus_message *mei_msg; | |
bb1b0133 | 1236 | struct hbm_host_version_response *version_res; |
bb1b0133 TW |
1237 | struct hbm_props_response *props_res; |
1238 | struct hbm_host_enum_response *enum_res; | |
c55bf542 | 1239 | struct hbm_dma_setup_response *dma_setup_res; |
70ef835c | 1240 | struct hbm_add_client_request *add_cl_req; |
beb4e1e5 | 1241 | struct hbm_capability_response *capability_res; |
70ef835c | 1242 | int ret; |
bb1b0133 | 1243 | |
12f45ed4 TW |
1244 | struct mei_hbm_cl_cmd *cl_cmd; |
1245 | struct hbm_client_connect_request *disconnect_req; | |
4034b81b | 1246 | struct hbm_flow_control *fctrl; |
369aea84 | 1247 | struct hbm_client_dma_response *client_dma_res; |
12f45ed4 | 1248 | |
bb1b0133 TW |
1249 | /* read the message to our buffer */ |
1250 | BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf)); | |
1251 | mei_read_slots(dev, dev->rd_msg_buf, hdr->length); | |
1252 | mei_msg = (struct mei_bus_message *)dev->rd_msg_buf; | |
12f45ed4 | 1253 | cl_cmd = (struct mei_hbm_cl_cmd *)mei_msg; |
bb1b0133 | 1254 | |
66ae460b TW |
1255 | /* ignore spurious message and prevent reset nesting |
1256 | * hbm is put to idle during system reset | |
1257 | */ | |
1258 | if (dev->hbm_state == MEI_HBM_IDLE) { | |
2bf94cab | 1259 | dev_dbg(dev->dev, "hbm: state is idle ignore spurious messages\n"); |
66ae460b TW |
1260 | return 0; |
1261 | } | |
1262 | ||
bb1b0133 TW |
1263 | switch (mei_msg->hbm_cmd) { |
1264 | case HOST_START_RES_CMD: | |
2bf94cab | 1265 | dev_dbg(dev->dev, "hbm: start: response message received.\n"); |
544f9460 TW |
1266 | |
1267 | dev->init_clients_timer = 0; | |
1268 | ||
bb1b0133 | 1269 | version_res = (struct hbm_host_version_response *)mei_msg; |
2c9b48ac | 1270 | |
2bf94cab | 1271 | dev_dbg(dev->dev, "HBM VERSION: DRIVER=%02d:%02d DEVICE=%02d:%02d\n", |
2c9b48ac TW |
1272 | HBM_MAJOR_VERSION, HBM_MINOR_VERSION, |
1273 | version_res->me_max_version.major_version, | |
1274 | version_res->me_max_version.minor_version); | |
1275 | ||
1276 | if (version_res->host_version_supported) { | |
1277 | dev->version.major_version = HBM_MAJOR_VERSION; | |
1278 | dev->version.minor_version = HBM_MINOR_VERSION; | |
1279 | } else { | |
1280 | dev->version.major_version = | |
1281 | version_res->me_max_version.major_version; | |
1282 | dev->version.minor_version = | |
1283 | version_res->me_max_version.minor_version; | |
1284 | } | |
1285 | ||
1286 | if (!mei_hbm_version_is_supported(dev)) { | |
2bf94cab | 1287 | dev_warn(dev->dev, "hbm: start: version mismatch - stopping the driver.\n"); |
bb1b0133 | 1288 | |
544f9460 | 1289 | dev->hbm_state = MEI_HBM_STOPPED; |
6bb948c9 | 1290 | if (mei_hbm_stop_req(dev)) { |
2bf94cab | 1291 | dev_err(dev->dev, "hbm: start: failed to send stop request\n"); |
544f9460 TW |
1292 | return -EIO; |
1293 | } | |
1294 | break; | |
1295 | } | |
9b0d5efc | 1296 | |
bae1cc7d TW |
1297 | mei_hbm_config_features(dev); |
1298 | ||
544f9460 | 1299 | if (dev->dev_state != MEI_DEV_INIT_CLIENTS || |
cb02efc3 | 1300 | dev->hbm_state != MEI_HBM_STARTING) { |
da3eb47c AU |
1301 | if (dev->dev_state == MEI_DEV_POWER_DOWN) { |
1302 | dev_dbg(dev->dev, "hbm: start: on shutdown, ignoring\n"); | |
1303 | return 0; | |
1304 | } | |
2bf94cab | 1305 | dev_err(dev->dev, "hbm: start: state mismatch, [%d, %d]\n", |
544f9460 TW |
1306 | dev->dev_state, dev->hbm_state); |
1307 | return -EPROTO; | |
e46f1874 | 1308 | } |
bb1b0133 | 1309 | |
e5cab1f9 AU |
1310 | if (dev->hbm_f_cap_supported) { |
1311 | if (mei_hbm_capabilities_req(dev)) | |
1312 | return -EIO; | |
1313 | wake_up(&dev->wait_hbm_start); | |
1314 | break; | |
1315 | } | |
1316 | ||
c55bf542 TW |
1317 | if (dev->hbm_f_dr_supported) { |
1318 | if (mei_dmam_ring_alloc(dev)) | |
1319 | dev_info(dev->dev, "running w/o dma ring\n"); | |
1320 | if (mei_dma_ring_is_allocated(dev)) { | |
1321 | if (mei_hbm_dma_setup_req(dev)) | |
1322 | return -EIO; | |
1323 | ||
1324 | wake_up(&dev->wait_hbm_start); | |
1325 | break; | |
1326 | } | |
bb1b0133 TW |
1327 | } |
1328 | ||
c55bf542 TW |
1329 | dev->hbm_f_dr_supported = 0; |
1330 | mei_dmam_ring_free(dev); | |
1331 | ||
1332 | if (mei_hbm_enum_clients_req(dev)) | |
1333 | return -EIO; | |
1334 | ||
cb02efc3 | 1335 | wake_up(&dev->wait_hbm_start); |
bb1b0133 TW |
1336 | break; |
1337 | ||
e5cab1f9 AU |
1338 | case MEI_HBM_CAPABILITIES_RES_CMD: |
1339 | dev_dbg(dev->dev, "hbm: capabilities response: message received.\n"); | |
1340 | ||
1341 | dev->init_clients_timer = 0; | |
1342 | ||
da3eb47c AU |
1343 | if (dev->dev_state != MEI_DEV_INIT_CLIENTS || |
1344 | dev->hbm_state != MEI_HBM_CAP_SETUP) { | |
1345 | if (dev->dev_state == MEI_DEV_POWER_DOWN) { | |
1346 | dev_dbg(dev->dev, "hbm: capabilities response: on shutdown, ignoring\n"); | |
1347 | return 0; | |
1348 | } | |
e5cab1f9 AU |
1349 | dev_err(dev->dev, "hbm: capabilities response: state mismatch, [%d, %d]\n", |
1350 | dev->dev_state, dev->hbm_state); | |
1351 | return -EPROTO; | |
1352 | } | |
1353 | ||
beb4e1e5 AU |
1354 | capability_res = (struct hbm_capability_response *)mei_msg; |
1355 | if (!(capability_res->capability_granted[0] & HBM_CAP_VT)) | |
1356 | dev->hbm_f_vt_supported = 0; | |
b7a48041 AU |
1357 | if (!(capability_res->capability_granted[0] & HBM_CAP_CD)) |
1358 | dev->hbm_f_cd_supported = 0; | |
beb4e1e5 | 1359 | |
e5cab1f9 AU |
1360 | if (dev->hbm_f_dr_supported) { |
1361 | if (mei_dmam_ring_alloc(dev)) | |
1362 | dev_info(dev->dev, "running w/o dma ring\n"); | |
1363 | if (mei_dma_ring_is_allocated(dev)) { | |
1364 | if (mei_hbm_dma_setup_req(dev)) | |
1365 | return -EIO; | |
1366 | break; | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | dev->hbm_f_dr_supported = 0; | |
1371 | mei_dmam_ring_free(dev); | |
1372 | ||
1373 | if (mei_hbm_enum_clients_req(dev)) | |
1374 | return -EIO; | |
1375 | break; | |
1376 | ||
c55bf542 TW |
1377 | case MEI_HBM_DMA_SETUP_RES_CMD: |
1378 | dev_dbg(dev->dev, "hbm: dma setup response: message received.\n"); | |
1379 | ||
1380 | dev->init_clients_timer = 0; | |
1381 | ||
da3eb47c AU |
1382 | if (dev->dev_state != MEI_DEV_INIT_CLIENTS || |
1383 | dev->hbm_state != MEI_HBM_DR_SETUP) { | |
1384 | if (dev->dev_state == MEI_DEV_POWER_DOWN) { | |
1385 | dev_dbg(dev->dev, "hbm: dma setup response: on shutdown, ignoring\n"); | |
1386 | return 0; | |
1387 | } | |
c55bf542 TW |
1388 | dev_err(dev->dev, "hbm: dma setup response: state mismatch, [%d, %d]\n", |
1389 | dev->dev_state, dev->hbm_state); | |
1390 | return -EPROTO; | |
1391 | } | |
1392 | ||
1393 | dma_setup_res = (struct hbm_dma_setup_response *)mei_msg; | |
1394 | ||
1395 | if (dma_setup_res->status) { | |
82e59cbe TW |
1396 | u8 status = dma_setup_res->status; |
1397 | ||
1398 | if (status == MEI_HBMS_NOT_ALLOWED) { | |
1399 | dev_dbg(dev->dev, "hbm: dma setup not allowed\n"); | |
1400 | } else { | |
1401 | dev_info(dev->dev, "hbm: dma setup response: failure = %d %s\n", | |
1402 | status, | |
1403 | mei_hbm_status_str(status)); | |
1404 | } | |
c55bf542 TW |
1405 | dev->hbm_f_dr_supported = 0; |
1406 | mei_dmam_ring_free(dev); | |
1407 | } | |
1408 | ||
1409 | if (mei_hbm_enum_clients_req(dev)) | |
1410 | return -EIO; | |
1411 | break; | |
1412 | ||
bb1b0133 | 1413 | case CLIENT_CONNECT_RES_CMD: |
2bf94cab | 1414 | dev_dbg(dev->dev, "hbm: client connect response: message received.\n"); |
12f45ed4 | 1415 | mei_hbm_cl_res(dev, cl_cmd, MEI_FOP_CONNECT); |
bb1b0133 TW |
1416 | break; |
1417 | ||
1418 | case CLIENT_DISCONNECT_RES_CMD: | |
2bf94cab | 1419 | dev_dbg(dev->dev, "hbm: client disconnect response: message received.\n"); |
12f45ed4 | 1420 | mei_hbm_cl_res(dev, cl_cmd, MEI_FOP_DISCONNECT); |
bb1b0133 TW |
1421 | break; |
1422 | ||
1423 | case MEI_FLOW_CONTROL_CMD: | |
2bf94cab | 1424 | dev_dbg(dev->dev, "hbm: client flow control response: message received.\n"); |
544f9460 | 1425 | |
4034b81b TW |
1426 | fctrl = (struct hbm_flow_control *)mei_msg; |
1427 | mei_hbm_cl_tx_flow_ctrl_creds_res(dev, fctrl); | |
bb1b0133 TW |
1428 | break; |
1429 | ||
4fcbc99b | 1430 | case MEI_PG_ISOLATION_ENTRY_RES_CMD: |
63f75232 AU |
1431 | dev_dbg(dev->dev, "hbm: power gate isolation entry response received\n"); |
1432 | ret = mei_hbm_pg_enter_res(dev); | |
1433 | if (ret) | |
1434 | return ret; | |
4fcbc99b TW |
1435 | break; |
1436 | ||
1437 | case MEI_PG_ISOLATION_EXIT_REQ_CMD: | |
63f75232 AU |
1438 | dev_dbg(dev->dev, "hbm: power gate isolation exit request received\n"); |
1439 | ret = mei_hbm_pg_exit_res(dev); | |
1440 | if (ret) | |
1441 | return ret; | |
4fcbc99b TW |
1442 | break; |
1443 | ||
bb1b0133 | 1444 | case HOST_CLIENT_PROPERTIES_RES_CMD: |
2bf94cab | 1445 | dev_dbg(dev->dev, "hbm: properties response: message received.\n"); |
544f9460 TW |
1446 | |
1447 | dev->init_clients_timer = 0; | |
1448 | ||
5ca2d388 TW |
1449 | if (dev->dev_state != MEI_DEV_INIT_CLIENTS || |
1450 | dev->hbm_state != MEI_HBM_CLIENT_PROPERTIES) { | |
da3eb47c AU |
1451 | if (dev->dev_state == MEI_DEV_POWER_DOWN) { |
1452 | dev_dbg(dev->dev, "hbm: properties response: on shutdown, ignoring\n"); | |
1453 | return 0; | |
1454 | } | |
2bf94cab | 1455 | dev_err(dev->dev, "hbm: properties response: state mismatch, [%d, %d]\n", |
5ca2d388 | 1456 | dev->dev_state, dev->hbm_state); |
544f9460 TW |
1457 | return -EPROTO; |
1458 | } | |
1459 | ||
bb1b0133 | 1460 | props_res = (struct hbm_props_response *)mei_msg; |
bb1b0133 | 1461 | |
8d2d8935 AU |
1462 | if (props_res->status == MEI_HBMS_CLIENT_NOT_FOUND) { |
1463 | dev_dbg(dev->dev, "hbm: properties response: %d CLIENT_NOT_FOUND\n", | |
1464 | props_res->me_addr); | |
1465 | } else if (props_res->status) { | |
2bf94cab | 1466 | dev_err(dev->dev, "hbm: properties response: wrong status = %d %s\n", |
89778d6e TW |
1467 | props_res->status, |
1468 | mei_hbm_status_str(props_res->status)); | |
544f9460 | 1469 | return -EPROTO; |
8d2d8935 AU |
1470 | } else { |
1471 | mei_hbm_me_cl_add(dev, props_res); | |
bb1b0133 TW |
1472 | } |
1473 | ||
8120e720 | 1474 | /* request property for the next client */ |
cc25aa94 | 1475 | if (mei_hbm_prop_req(dev, props_res->me_addr + 1)) |
544f9460 | 1476 | return -EIO; |
bb1b0133 TW |
1477 | |
1478 | break; | |
1479 | ||
1480 | case HOST_ENUM_RES_CMD: | |
2bf94cab | 1481 | dev_dbg(dev->dev, "hbm: enumeration response: message received\n"); |
544f9460 TW |
1482 | |
1483 | dev->init_clients_timer = 0; | |
1484 | ||
bb1b0133 | 1485 | enum_res = (struct hbm_host_enum_response *) mei_msg; |
23f5a322 TW |
1486 | BUILD_BUG_ON(sizeof(dev->me_clients_map) |
1487 | < sizeof(enum_res->valid_addresses)); | |
1488 | memcpy(dev->me_clients_map, enum_res->valid_addresses, | |
5ca2d388 | 1489 | sizeof(enum_res->valid_addresses)); |
544f9460 TW |
1490 | |
1491 | if (dev->dev_state != MEI_DEV_INIT_CLIENTS || | |
1492 | dev->hbm_state != MEI_HBM_ENUM_CLIENTS) { | |
da3eb47c AU |
1493 | if (dev->dev_state == MEI_DEV_POWER_DOWN) { |
1494 | dev_dbg(dev->dev, "hbm: enumeration response: on shutdown, ignoring\n"); | |
1495 | return 0; | |
1496 | } | |
2bf94cab | 1497 | dev_err(dev->dev, "hbm: enumeration response: state mismatch, [%d, %d]\n", |
544f9460 TW |
1498 | dev->dev_state, dev->hbm_state); |
1499 | return -EPROTO; | |
bb1b0133 | 1500 | } |
544f9460 | 1501 | |
544f9460 TW |
1502 | dev->hbm_state = MEI_HBM_CLIENT_PROPERTIES; |
1503 | ||
1504 | /* first property request */ | |
cc25aa94 | 1505 | if (mei_hbm_prop_req(dev, 0)) |
544f9460 TW |
1506 | return -EIO; |
1507 | ||
bb1b0133 TW |
1508 | break; |
1509 | ||
1510 | case HOST_STOP_RES_CMD: | |
2bf94cab | 1511 | dev_dbg(dev->dev, "hbm: stop response: message received\n"); |
544f9460 TW |
1512 | |
1513 | dev->init_clients_timer = 0; | |
1514 | ||
1515 | if (dev->hbm_state != MEI_HBM_STOPPED) { | |
2bf94cab | 1516 | dev_err(dev->dev, "hbm: stop response: state mismatch, [%d, %d]\n", |
544f9460 TW |
1517 | dev->dev_state, dev->hbm_state); |
1518 | return -EPROTO; | |
1519 | } | |
9b0d5efc | 1520 | |
3a77df62 | 1521 | mei_set_devstate(dev, MEI_DEV_POWER_DOWN); |
2bf94cab | 1522 | dev_info(dev->dev, "hbm: stop response: resetting.\n"); |
544f9460 TW |
1523 | /* force the reset */ |
1524 | return -EPROTO; | |
bb1b0133 TW |
1525 | |
1526 | case CLIENT_DISCONNECT_REQ_CMD: | |
2bf94cab | 1527 | dev_dbg(dev->dev, "hbm: disconnect request: message received\n"); |
544f9460 | 1528 | |
bb1b0133 | 1529 | disconnect_req = (struct hbm_client_connect_request *)mei_msg; |
8120e720 | 1530 | mei_hbm_fw_disconnect_req(dev, disconnect_req); |
bb1b0133 TW |
1531 | break; |
1532 | ||
1533 | case ME_STOP_REQ_CMD: | |
2bf94cab | 1534 | dev_dbg(dev->dev, "hbm: stop request: message received\n"); |
544f9460 | 1535 | dev->hbm_state = MEI_HBM_STOPPED; |
6bb948c9 | 1536 | if (mei_hbm_stop_req(dev)) { |
2bf94cab | 1537 | dev_err(dev->dev, "hbm: stop request: failed to send stop request\n"); |
6bb948c9 TW |
1538 | return -EIO; |
1539 | } | |
bb1b0133 | 1540 | break; |
70ef835c TW |
1541 | |
1542 | case MEI_HBM_ADD_CLIENT_REQ_CMD: | |
1543 | dev_dbg(dev->dev, "hbm: add client request received\n"); | |
1544 | /* | |
1545 | * after the host receives the enum_resp | |
1546 | * message clients may be added or removed | |
1547 | */ | |
84dfe03a | 1548 | if (dev->hbm_state <= MEI_HBM_ENUM_CLIENTS || |
70ef835c TW |
1549 | dev->hbm_state >= MEI_HBM_STOPPED) { |
1550 | dev_err(dev->dev, "hbm: add client: state mismatch, [%d, %d]\n", | |
1551 | dev->dev_state, dev->hbm_state); | |
1552 | return -EPROTO; | |
1553 | } | |
1554 | add_cl_req = (struct hbm_add_client_request *)mei_msg; | |
1555 | ret = mei_hbm_fw_add_cl_req(dev, add_cl_req); | |
1556 | if (ret) { | |
1557 | dev_err(dev->dev, "hbm: add client: failed to send response %d\n", | |
1558 | ret); | |
1559 | return -EIO; | |
1560 | } | |
1561 | dev_dbg(dev->dev, "hbm: add client request processed\n"); | |
1562 | break; | |
1563 | ||
965ae37a TW |
1564 | case MEI_HBM_NOTIFY_RES_CMD: |
1565 | dev_dbg(dev->dev, "hbm: notify response received\n"); | |
1566 | mei_hbm_cl_res(dev, cl_cmd, notify_res_to_fop(cl_cmd)); | |
1567 | break; | |
1568 | ||
1569 | case MEI_HBM_NOTIFICATION_CMD: | |
1570 | dev_dbg(dev->dev, "hbm: notification\n"); | |
1571 | mei_hbm_cl_notify(dev, cl_cmd); | |
1572 | break; | |
1573 | ||
369aea84 AU |
1574 | case MEI_HBM_CLIENT_DMA_MAP_RES_CMD: |
1575 | dev_dbg(dev->dev, "hbm: client dma map response: message received.\n"); | |
1576 | client_dma_res = (struct hbm_client_dma_response *)mei_msg; | |
1577 | mei_hbm_cl_dma_map_res(dev, client_dma_res); | |
1578 | break; | |
1579 | ||
1580 | case MEI_HBM_CLIENT_DMA_UNMAP_RES_CMD: | |
1581 | dev_dbg(dev->dev, "hbm: client dma unmap response: message received.\n"); | |
1582 | client_dma_res = (struct hbm_client_dma_response *)mei_msg; | |
1583 | mei_hbm_cl_dma_unmap_res(dev, client_dma_res); | |
1584 | break; | |
1585 | ||
bb1b0133 | 1586 | default: |
40a66973 TW |
1587 | WARN(1, "hbm: wrong command %d\n", mei_msg->hbm_cmd); |
1588 | return -EPROTO; | |
bb1b0133 TW |
1589 | |
1590 | } | |
544f9460 | 1591 | return 0; |
bb1b0133 TW |
1592 | } |
1593 |