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Commit | Line | Data |
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ab841160 OW |
1 | /* |
2 | * | |
3 | * Intel Management Engine Interface (Intel MEI) Linux driver | |
733ba91c | 4 | * Copyright (c) 2003-2012, Intel Corporation. |
ab841160 OW |
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 | #ifndef _MEI_DEV_H_ | |
18 | #define _MEI_DEV_H_ | |
19 | ||
20 | #include <linux/types.h> | |
9ce178e5 | 21 | #include <linux/watchdog.h> |
744f0f2f | 22 | #include <linux/poll.h> |
4f3afe1d | 23 | #include <linux/mei.h> |
e5354107 | 24 | #include <linux/mei_cl_bus.h> |
66ef5ea9 | 25 | |
ab841160 | 26 | #include "hw.h" |
9dc64d6a | 27 | #include "hw-me-regs.h" |
ab841160 | 28 | |
ab841160 OW |
29 | /* |
30 | * watch dog definition | |
31 | */ | |
248ffdf7 TW |
32 | #define MEI_WD_HDR_SIZE 4 |
33 | #define MEI_WD_STOP_MSG_SIZE MEI_WD_HDR_SIZE | |
34 | #define MEI_WD_START_MSG_SIZE (MEI_WD_HDR_SIZE + 16) | |
35 | ||
36 | #define MEI_WD_DEFAULT_TIMEOUT 120 /* seconds */ | |
37 | #define MEI_WD_MIN_TIMEOUT 120 /* seconds */ | |
38 | #define MEI_WD_MAX_TIMEOUT 65535 /* seconds */ | |
39 | ||
c216fdeb TW |
40 | #define MEI_WD_STOP_TIMEOUT 10 /* msecs */ |
41 | ||
ab841160 OW |
42 | #define MEI_WD_STATE_INDEPENDENCE_MSG_SENT (1 << 0) |
43 | ||
edf1eed4 TW |
44 | #define MEI_RD_MSG_BUF_SIZE (128 * sizeof(u32)) |
45 | ||
9ce178e5 | 46 | |
ab841160 OW |
47 | /* |
48 | * AMTHI Client UUID | |
49 | */ | |
1a1aca42 | 50 | extern const uuid_le mei_amthif_guid; |
ab841160 OW |
51 | |
52 | /* | |
53 | * Watchdog Client UUID | |
54 | */ | |
55 | extern const uuid_le mei_wd_guid; | |
56 | ||
57 | /* | |
58 | * Watchdog independence state message | |
59 | */ | |
60 | extern const u8 mei_wd_state_independence_msg[3][4]; | |
61 | ||
1e2776c3 TW |
62 | /* |
63 | * Number of Maximum MEI Clients | |
64 | */ | |
65 | #define MEI_CLIENTS_MAX 256 | |
66 | ||
ab841160 OW |
67 | /* |
68 | * Number of File descriptors/handles | |
69 | * that can be opened to the driver. | |
70 | * | |
781d0d89 | 71 | * Limit to 255: 256 Total Clients |
1e2776c3 | 72 | * minus internal client for MEI Bus Messags |
ab841160 | 73 | */ |
781d0d89 | 74 | #define MEI_MAX_OPEN_HANDLE_COUNT (MEI_CLIENTS_MAX - 1) |
ab841160 | 75 | |
1d3f3da3 TW |
76 | /* |
77 | * Internal Clients Number | |
78 | */ | |
781d0d89 TW |
79 | #define MEI_HOST_CLIENT_ID_ANY (-1) |
80 | #define MEI_HBM_HOST_CLIENT_ID 0 /* not used, just for documentation */ | |
1d3f3da3 TW |
81 | #define MEI_WD_HOST_CLIENT_ID 1 |
82 | #define MEI_IAMTHIF_HOST_CLIENT_ID 2 | |
83 | ||
ab841160 OW |
84 | |
85 | /* File state */ | |
86 | enum file_state { | |
87 | MEI_FILE_INITIALIZING = 0, | |
88 | MEI_FILE_CONNECTING, | |
89 | MEI_FILE_CONNECTED, | |
90 | MEI_FILE_DISCONNECTING, | |
91 | MEI_FILE_DISCONNECTED | |
92 | }; | |
93 | ||
94 | /* MEI device states */ | |
b210d750 TW |
95 | enum mei_dev_state { |
96 | MEI_DEV_INITIALIZING = 0, | |
97 | MEI_DEV_INIT_CLIENTS, | |
98 | MEI_DEV_ENABLED, | |
99 | MEI_DEV_RESETING, | |
100 | MEI_DEV_DISABLED, | |
b210d750 TW |
101 | MEI_DEV_POWER_DOWN, |
102 | MEI_DEV_POWER_UP | |
ab841160 OW |
103 | }; |
104 | ||
b210d750 TW |
105 | const char *mei_dev_state_str(int state); |
106 | ||
5f9092f3 | 107 | /* init clients states*/ |
ab841160 OW |
108 | enum mei_init_clients_states { |
109 | MEI_START_MESSAGE = 0, | |
110 | MEI_ENUM_CLIENTS_MESSAGE, | |
111 | MEI_CLIENT_PROPERTIES_MESSAGE | |
112 | }; | |
113 | ||
114 | enum iamthif_states { | |
115 | MEI_IAMTHIF_IDLE, | |
116 | MEI_IAMTHIF_WRITING, | |
117 | MEI_IAMTHIF_FLOW_CONTROL, | |
118 | MEI_IAMTHIF_READING, | |
119 | MEI_IAMTHIF_READ_COMPLETE | |
120 | }; | |
121 | ||
122 | enum mei_file_transaction_states { | |
123 | MEI_IDLE, | |
124 | MEI_WRITING, | |
125 | MEI_WRITE_COMPLETE, | |
126 | MEI_FLOW_CONTROL, | |
127 | MEI_READING, | |
128 | MEI_READ_COMPLETE | |
129 | }; | |
130 | ||
c216fdeb TW |
131 | enum mei_wd_states { |
132 | MEI_WD_IDLE, | |
133 | MEI_WD_RUNNING, | |
134 | MEI_WD_STOPPING, | |
135 | }; | |
136 | ||
4b8960b4 TW |
137 | /** |
138 | * enum mei_cb_file_ops - file operation associated with the callback | |
139 | * @MEI_FOP_READ - read | |
140 | * @MEI_FOP_WRITE - write | |
141 | * @MEI_FOP_IOCTL - ioctl | |
142 | * @MEI_FOP_OPEN - open | |
143 | * @MEI_FOP_CLOSE - close | |
144 | */ | |
145 | enum mei_cb_file_ops { | |
146 | MEI_FOP_READ = 0, | |
147 | MEI_FOP_WRITE, | |
148 | MEI_FOP_IOCTL, | |
149 | MEI_FOP_OPEN, | |
150 | MEI_FOP_CLOSE | |
ab841160 OW |
151 | }; |
152 | ||
153 | /* | |
154 | * Intel MEI message data struct | |
155 | */ | |
156 | struct mei_message_data { | |
157 | u32 size; | |
edf1eed4 | 158 | unsigned char *data; |
f060939d | 159 | }; |
ab841160 | 160 | |
db7da79d TW |
161 | /** |
162 | * struct mei_me_client - representation of me (fw) client | |
163 | * | |
164 | * @props - client properties | |
165 | * @client_id - me client id | |
166 | * @mei_flow_ctrl_creds - flow control credits | |
167 | */ | |
168 | struct mei_me_client { | |
169 | struct mei_client_properties props; | |
170 | u8 client_id; | |
171 | u8 mei_flow_ctrl_creds; | |
172 | }; | |
173 | ||
ab841160 | 174 | |
db3ed431 TW |
175 | struct mei_cl; |
176 | ||
4b8960b4 | 177 | /** |
db3ed431 TW |
178 | * struct mei_cl_cb - file operation callback structure |
179 | * | |
180 | * @cl - file client who is running this operation | |
4b8960b4 | 181 | * @fop_type - file operation type |
db3ed431 | 182 | */ |
ab841160 | 183 | struct mei_cl_cb { |
fb601adb | 184 | struct list_head list; |
db3ed431 | 185 | struct mei_cl *cl; |
4b8960b4 | 186 | enum mei_cb_file_ops fop_type; |
ab841160 OW |
187 | struct mei_message_data request_buffer; |
188 | struct mei_message_data response_buffer; | |
ebb108ef | 189 | unsigned long buf_idx; |
ab841160 OW |
190 | unsigned long read_time; |
191 | struct file *file_object; | |
192 | }; | |
193 | ||
194 | /* MEI client instance carried as file->pirvate_data*/ | |
195 | struct mei_cl { | |
196 | struct list_head link; | |
197 | struct mei_device *dev; | |
198 | enum file_state state; | |
199 | wait_queue_head_t tx_wait; | |
200 | wait_queue_head_t rx_wait; | |
201 | wait_queue_head_t wait; | |
ab841160 OW |
202 | int status; |
203 | /* ID of client connected */ | |
204 | u8 host_client_id; | |
205 | u8 me_client_id; | |
206 | u8 mei_flow_ctrl_creds; | |
207 | u8 timer_count; | |
208 | enum mei_file_transaction_states reading_state; | |
209 | enum mei_file_transaction_states writing_state; | |
210 | int sm_state; | |
211 | struct mei_cl_cb *read_cb; | |
a7b71bc0 SO |
212 | |
213 | /* MEI CL bus data */ | |
214 | struct mei_cl_device *device; | |
215 | struct list_head device_link; | |
216 | uuid_le device_uuid; | |
ab841160 OW |
217 | }; |
218 | ||
827eef51 TW |
219 | /** struct mei_hw_ops |
220 | * | |
827eef51 TW |
221 | * @host_is_ready - query for host readiness |
222 | ||
223 | * @hw_is_ready - query if hw is ready | |
224 | * @hw_reset - reset hw | |
aafae7ec | 225 | * @hw_start - start hw after reset |
827eef51 TW |
226 | * @hw_config - configure hw |
227 | ||
228 | * @intr_clear - clear pending interrupts | |
229 | * @intr_enable - enable interrupts | |
230 | * @intr_disable - disable interrupts | |
231 | ||
232 | * @hbuf_free_slots - query for write buffer empty slots | |
233 | * @hbuf_is_ready - query if write buffer is empty | |
234 | * @hbuf_max_len - query for write buffer max len | |
235 | ||
236 | * @write - write a message to FW | |
237 | ||
238 | * @rdbuf_full_slots - query how many slots are filled | |
239 | ||
240 | * @read_hdr - get first 4 bytes (header) | |
241 | * @read - read a buffer from the FW | |
242 | */ | |
243 | struct mei_hw_ops { | |
244 | ||
827eef51 TW |
245 | bool (*host_is_ready) (struct mei_device *dev); |
246 | ||
247 | bool (*hw_is_ready) (struct mei_device *dev); | |
248 | void (*hw_reset) (struct mei_device *dev, bool enable); | |
aafae7ec | 249 | int (*hw_start) (struct mei_device *dev); |
827eef51 TW |
250 | void (*hw_config) (struct mei_device *dev); |
251 | ||
252 | void (*intr_clear) (struct mei_device *dev); | |
253 | void (*intr_enable) (struct mei_device *dev); | |
254 | void (*intr_disable) (struct mei_device *dev); | |
255 | ||
256 | int (*hbuf_free_slots) (struct mei_device *dev); | |
257 | bool (*hbuf_is_ready) (struct mei_device *dev); | |
258 | size_t (*hbuf_max_len) (const struct mei_device *dev); | |
259 | ||
260 | int (*write)(struct mei_device *dev, | |
261 | struct mei_msg_hdr *hdr, | |
262 | unsigned char *buf); | |
263 | ||
264 | int (*rdbuf_full_slots)(struct mei_device *dev); | |
265 | ||
266 | u32 (*read_hdr)(const struct mei_device *dev); | |
267 | int (*read) (struct mei_device *dev, | |
268 | unsigned char *buf, unsigned long len); | |
269 | }; | |
270 | ||
e5354107 SO |
271 | /* MEI bus API*/ |
272 | struct mei_cl_device *mei_cl_add_device(struct mei_device *dev, | |
273 | uuid_le uuid, char *name); | |
274 | void mei_cl_remove_device(struct mei_cl_device *device); | |
275 | ||
44d88d91 | 276 | int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length); |
3e833295 SO |
277 | int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length); |
278 | int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length); | |
279 | ||
280 | /** | |
281 | * struct mei_cl_transport_ops - MEI CL device transport ops | |
282 | * This structure allows ME host clients to implement technology | |
283 | * specific transport layers. | |
284 | * | |
285 | * @send: Tx hook for the device. This allows ME host clients to trap | |
286 | * the device driver buffers before actually physically | |
287 | * pushing it to the ME. | |
288 | * @recv: Rx hook for the device. This allows ME host clients to trap the | |
289 | * ME buffers before forwarding them to the device driver. | |
290 | */ | |
291 | struct mei_cl_transport_ops { | |
292 | int (*send)(struct mei_cl_device *device, u8 *buf, size_t length); | |
293 | int (*recv)(struct mei_cl_device *device, u8 *buf, size_t length); | |
294 | }; | |
295 | ||
cf3baefb SO |
296 | void mei_cl_bus_rx_event(struct mei_cl *cl); |
297 | int mei_cl_bus_init(void); | |
298 | void mei_cl_bus_exit(void); | |
299 | ||
300 | ||
e5354107 SO |
301 | /** |
302 | * struct mei_cl_device - MEI device handle | |
303 | * An mei_cl_device pointer is returned from mei_add_device() | |
304 | * and links MEI bus clients to their actual ME host client pointer. | |
305 | * Drivers for MEI devices will get an mei_cl_device pointer | |
306 | * when being probed and shall use it for doing ME bus I/O. | |
307 | * | |
308 | * @dev: linux driver model device pointer | |
309 | * @uuid: me client uuid | |
310 | * @cl: mei client | |
3e833295 SO |
311 | * @ops: ME transport ops |
312 | * @event_cb: Drivers register this callback to get asynchronous ME | |
313 | * events (e.g. Rx buffer pending) notifications. | |
314 | * @events: Events bitmask sent to the driver. | |
e5354107 SO |
315 | * @priv_data: client private data |
316 | */ | |
317 | struct mei_cl_device { | |
318 | struct device dev; | |
319 | ||
320 | struct mei_cl *cl; | |
321 | ||
3e833295 SO |
322 | const struct mei_cl_transport_ops *ops; |
323 | ||
324 | struct work_struct event_work; | |
325 | mei_cl_event_cb_t event_cb; | |
326 | void *event_context; | |
327 | unsigned long events; | |
328 | ||
e5354107 SO |
329 | void *priv_data; |
330 | }; | |
331 | ||
24aadc80 | 332 | /** |
5fb54fb4 | 333 | * struct mei_device - MEI private device struct |
330dd7da | 334 | |
fecb0d58 | 335 | * @mem_addr - mem mapped base register address |
330dd7da TW |
336 | |
337 | * @hbuf_depth - depth of hardware host/write buffer is slots | |
338 | * @hbuf_is_ready - query if the host host/write buffer is ready | |
339 | * @wr_msg - the buffer for hbm control messages | |
340 | * @wr_ext_msg - the buffer for hbm control responses (set in read cycle) | |
24aadc80 | 341 | */ |
ab841160 OW |
342 | struct mei_device { |
343 | struct pci_dev *pdev; /* pointer to pci device struct */ | |
344 | /* | |
345 | * lists of queues | |
346 | */ | |
e773efc4 | 347 | /* array of pointers to aio lists */ |
fb601adb TW |
348 | struct mei_cl_cb read_list; /* driver read queue */ |
349 | struct mei_cl_cb write_list; /* driver write queue */ | |
350 | struct mei_cl_cb write_waiting_list; /* write waiting queue */ | |
351 | struct mei_cl_cb ctrl_wr_list; /* managed write IOCTL list */ | |
352 | struct mei_cl_cb ctrl_rd_list; /* managed read IOCTL list */ | |
ab841160 | 353 | |
ab841160 OW |
354 | /* |
355 | * list of files | |
356 | */ | |
357 | struct list_head file_list; | |
eb9af0ac | 358 | long open_handle_count; |
fecb0d58 | 359 | |
ab841160 OW |
360 | /* |
361 | * lock for the device | |
362 | */ | |
363 | struct mutex device_lock; /* device lock */ | |
a61c6530 | 364 | struct delayed_work timer_work; /* MEI timer delayed work (timeouts) */ |
aafae7ec TW |
365 | |
366 | bool recvd_hw_ready; | |
eb9af0ac | 367 | bool recvd_msg; |
52c34561 | 368 | |
ab841160 OW |
369 | /* |
370 | * waiting queue for receive message from FW | |
371 | */ | |
aafae7ec | 372 | wait_queue_head_t wait_hw_ready; |
ab841160 OW |
373 | wait_queue_head_t wait_recvd_msg; |
374 | wait_queue_head_t wait_stop_wd; | |
375 | ||
376 | /* | |
377 | * mei device states | |
378 | */ | |
b210d750 | 379 | enum mei_dev_state dev_state; |
ab841160 OW |
380 | enum mei_init_clients_states init_clients_state; |
381 | u16 init_clients_timer; | |
ab841160 | 382 | |
edf1eed4 | 383 | unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */ |
ab841160 | 384 | u32 rd_msg_hdr; |
e46f1874 | 385 | |
330dd7da TW |
386 | /* write buffer */ |
387 | u8 hbuf_depth; | |
388 | bool hbuf_is_ready; | |
389 | ||
e46f1874 TW |
390 | /* used for control messages */ |
391 | struct { | |
392 | struct mei_msg_hdr hdr; | |
393 | unsigned char data[128]; | |
394 | } wr_msg; | |
395 | ||
5fb54fb4 TW |
396 | struct { |
397 | struct mei_msg_hdr hdr; | |
398 | unsigned char data[4]; /* All HBM messages are 4 bytes */ | |
399 | } wr_ext_msg; /* for control responses */ | |
ab841160 OW |
400 | |
401 | struct hbm_version version; | |
402 | ||
ab841160 OW |
403 | struct mei_me_client *me_clients; /* Note: memory has to be allocated */ |
404 | DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX); | |
405 | DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX); | |
cf9673da | 406 | u8 me_clients_num; |
ab841160 OW |
407 | u8 me_client_presentation_num; |
408 | u8 me_client_index; | |
409 | ||
eb9af0ac | 410 | struct mei_cl wd_cl; |
c216fdeb | 411 | enum mei_wd_states wd_state; |
eb9af0ac | 412 | bool wd_pending; |
c216fdeb | 413 | u16 wd_timeout; |
248ffdf7 | 414 | unsigned char wd_data[MEI_WD_START_MSG_SIZE]; |
ab841160 OW |
415 | |
416 | ||
e773efc4 TW |
417 | /* amthif list for cmd waiting */ |
418 | struct mei_cl_cb amthif_cmd_list; | |
419 | /* driver managed amthif list for reading completed amthif cmd data */ | |
420 | struct mei_cl_cb amthif_rd_complete_list; | |
ab841160 OW |
421 | struct file *iamthif_file_object; |
422 | struct mei_cl iamthif_cl; | |
eb9af0ac | 423 | struct mei_cl_cb *iamthif_current_cb; |
ab841160 OW |
424 | int iamthif_mtu; |
425 | unsigned long iamthif_timer; | |
426 | u32 iamthif_stall_timer; | |
427 | unsigned char *iamthif_msg_buf; /* Note: memory has to be allocated */ | |
428 | u32 iamthif_msg_buf_size; | |
429 | u32 iamthif_msg_buf_index; | |
ab841160 | 430 | enum iamthif_states iamthif_state; |
eb9af0ac TW |
431 | bool iamthif_flow_control_pending; |
432 | bool iamthif_ioctl; | |
433 | bool iamthif_canceled; | |
c1174c0e SO |
434 | |
435 | struct work_struct init_work; | |
827eef51 | 436 | |
a7b71bc0 SO |
437 | /* List of bus devices */ |
438 | struct list_head device_list; | |
439 | ||
827eef51 | 440 | const struct mei_hw_ops *ops; |
52c34561 | 441 | char hw[0] __aligned(sizeof(void *)); |
ab841160 OW |
442 | }; |
443 | ||
3870c320 TW |
444 | static inline unsigned long mei_secs_to_jiffies(unsigned long sec) |
445 | { | |
446 | return msecs_to_jiffies(sec * MSEC_PER_SEC); | |
447 | } | |
448 | ||
c8c8d080 TW |
449 | /** |
450 | * mei_data2slots - get slots - number of (dwords) from a message length | |
451 | * + size of the mei header | |
452 | * @length - size of the messages in bytes | |
453 | * returns - number of slots | |
454 | */ | |
455 | static inline u32 mei_data2slots(size_t length) | |
456 | { | |
457 | return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4); | |
458 | } | |
459 | ||
ab841160 OW |
460 | /* |
461 | * mei init function prototypes | |
462 | */ | |
52c34561 | 463 | void mei_device_init(struct mei_device *dev); |
ab841160 | 464 | void mei_reset(struct mei_device *dev, int interrupts); |
c4d589be | 465 | int mei_start(struct mei_device *dev); |
7cb035d9 | 466 | void mei_stop(struct mei_device *dev); |
c95efb74 | 467 | |
c95efb74 TW |
468 | /* |
469 | * MEI interrupt functions prototype | |
ab841160 | 470 | */ |
06ecd645 | 471 | |
a61c6530 | 472 | void mei_timer(struct work_struct *work); |
06ecd645 TW |
473 | int mei_irq_read_handler(struct mei_device *dev, |
474 | struct mei_cl_cb *cmpl_list, s32 *slots); | |
475 | ||
476 | int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); | |
4c6e22b8 | 477 | void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); |
ab841160 | 478 | |
19838fb8 TW |
479 | /* |
480 | * AMTHIF - AMT Host Interface Functions | |
481 | */ | |
482 | void mei_amthif_reset_params(struct mei_device *dev); | |
483 | ||
781d0d89 | 484 | int mei_amthif_host_init(struct mei_device *dev); |
19838fb8 TW |
485 | |
486 | int mei_amthif_write(struct mei_device *dev, struct mei_cl_cb *priv_cb); | |
487 | ||
488 | int mei_amthif_read(struct mei_device *dev, struct file *file, | |
744f0f2f TW |
489 | char __user *ubuf, size_t length, loff_t *offset); |
490 | ||
491 | unsigned int mei_amthif_poll(struct mei_device *dev, | |
492 | struct file *file, poll_table *wait); | |
ab841160 | 493 | |
a562d5c2 TW |
494 | int mei_amthif_release(struct mei_device *dev, struct file *file); |
495 | ||
19838fb8 | 496 | struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev, |
ab841160 OW |
497 | struct file *file); |
498 | ||
19838fb8 TW |
499 | void mei_amthif_run_next_cmd(struct mei_device *dev); |
500 | ||
501 | ||
24c656e5 TW |
502 | int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots, |
503 | struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list); | |
ab841160 | 504 | |
19838fb8 TW |
505 | void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb); |
506 | int mei_amthif_irq_read_message(struct mei_cl_cb *complete_list, | |
507 | struct mei_device *dev, struct mei_msg_hdr *mei_hdr); | |
508 | int mei_amthif_irq_read(struct mei_device *dev, s32 *slots); | |
ab841160 | 509 | |
37e7d6e7 TW |
510 | |
511 | int mei_wd_send(struct mei_device *dev); | |
512 | int mei_wd_stop(struct mei_device *dev); | |
513 | int mei_wd_host_init(struct mei_device *dev); | |
514 | /* | |
515 | * mei_watchdog_register - Registering watchdog interface | |
516 | * once we got connection to the WD Client | |
517 | * @dev - mei device | |
518 | */ | |
519 | void mei_watchdog_register(struct mei_device *dev); | |
520 | /* | |
521 | * mei_watchdog_unregister - Unregistering watchdog interface | |
522 | * @dev - mei device | |
523 | */ | |
524 | void mei_watchdog_unregister(struct mei_device *dev); | |
525 | ||
ab841160 OW |
526 | /* |
527 | * Register Access Function | |
528 | */ | |
529 | ||
827eef51 TW |
530 | static inline void mei_hw_config(struct mei_device *dev) |
531 | { | |
532 | dev->ops->hw_config(dev); | |
533 | } | |
534 | static inline void mei_hw_reset(struct mei_device *dev, bool enable) | |
535 | { | |
536 | dev->ops->hw_reset(dev, enable); | |
537 | } | |
538 | ||
aafae7ec TW |
539 | static inline void mei_hw_start(struct mei_device *dev) |
540 | { | |
541 | dev->ops->hw_start(dev); | |
542 | } | |
543 | ||
827eef51 TW |
544 | static inline void mei_clear_interrupts(struct mei_device *dev) |
545 | { | |
546 | dev->ops->intr_clear(dev); | |
547 | } | |
548 | ||
549 | static inline void mei_enable_interrupts(struct mei_device *dev) | |
550 | { | |
551 | dev->ops->intr_enable(dev); | |
552 | } | |
ab841160 | 553 | |
827eef51 TW |
554 | static inline void mei_disable_interrupts(struct mei_device *dev) |
555 | { | |
556 | dev->ops->intr_disable(dev); | |
557 | } | |
ab841160 | 558 | |
827eef51 TW |
559 | static inline bool mei_host_is_ready(struct mei_device *dev) |
560 | { | |
561 | return dev->ops->host_is_ready(dev); | |
562 | } | |
563 | static inline bool mei_hw_is_ready(struct mei_device *dev) | |
564 | { | |
565 | return dev->ops->hw_is_ready(dev); | |
566 | } | |
e7e0c231 | 567 | |
827eef51 TW |
568 | static inline bool mei_hbuf_is_ready(struct mei_device *dev) |
569 | { | |
570 | return dev->ops->hbuf_is_ready(dev); | |
571 | } | |
ab841160 | 572 | |
827eef51 TW |
573 | static inline int mei_hbuf_empty_slots(struct mei_device *dev) |
574 | { | |
575 | return dev->ops->hbuf_free_slots(dev); | |
576 | } | |
115ba28c | 577 | |
827eef51 TW |
578 | static inline size_t mei_hbuf_max_len(const struct mei_device *dev) |
579 | { | |
580 | return dev->ops->hbuf_max_len(dev); | |
581 | } | |
3a65dd4e | 582 | |
827eef51 TW |
583 | static inline int mei_write_message(struct mei_device *dev, |
584 | struct mei_msg_hdr *hdr, | |
585 | unsigned char *buf) | |
586 | { | |
587 | return dev->ops->write(dev, hdr, buf); | |
588 | } | |
589 | ||
590 | static inline u32 mei_read_hdr(const struct mei_device *dev) | |
591 | { | |
592 | return dev->ops->read_hdr(dev); | |
593 | } | |
594 | ||
595 | static inline void mei_read_slots(struct mei_device *dev, | |
596 | unsigned char *buf, unsigned long len) | |
597 | { | |
598 | dev->ops->read(dev, buf, len); | |
599 | } | |
600 | ||
601 | static inline int mei_count_full_read_slots(struct mei_device *dev) | |
602 | { | |
603 | return dev->ops->rdbuf_full_slots(dev); | |
604 | } | |
5bd64714 | 605 | |
2703d4b2 TW |
606 | int mei_register(struct device *dev); |
607 | void mei_deregister(void); | |
608 | ||
15d4acc5 TW |
609 | #define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d comp=%1d" |
610 | #define MEI_HDR_PRM(hdr) \ | |
611 | (hdr)->host_addr, (hdr)->me_addr, \ | |
612 | (hdr)->length, (hdr)->msg_complete | |
613 | ||
ab841160 | 614 | #endif |