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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" |
9b0d5efc | 28 | #include "hbm.h" |
ab841160 | 29 | |
ab841160 OW |
30 | /* |
31 | * watch dog definition | |
32 | */ | |
248ffdf7 TW |
33 | #define MEI_WD_HDR_SIZE 4 |
34 | #define MEI_WD_STOP_MSG_SIZE MEI_WD_HDR_SIZE | |
35 | #define MEI_WD_START_MSG_SIZE (MEI_WD_HDR_SIZE + 16) | |
36 | ||
37 | #define MEI_WD_DEFAULT_TIMEOUT 120 /* seconds */ | |
38 | #define MEI_WD_MIN_TIMEOUT 120 /* seconds */ | |
39 | #define MEI_WD_MAX_TIMEOUT 65535 /* seconds */ | |
40 | ||
c216fdeb TW |
41 | #define MEI_WD_STOP_TIMEOUT 10 /* msecs */ |
42 | ||
ab841160 OW |
43 | #define MEI_WD_STATE_INDEPENDENCE_MSG_SENT (1 << 0) |
44 | ||
edf1eed4 TW |
45 | #define MEI_RD_MSG_BUF_SIZE (128 * sizeof(u32)) |
46 | ||
9ce178e5 | 47 | |
ab841160 OW |
48 | /* |
49 | * AMTHI Client UUID | |
50 | */ | |
1a1aca42 | 51 | extern const uuid_le mei_amthif_guid; |
ab841160 OW |
52 | |
53 | /* | |
54 | * Watchdog Client UUID | |
55 | */ | |
56 | extern const uuid_le mei_wd_guid; | |
57 | ||
1e2776c3 TW |
58 | /* |
59 | * Number of Maximum MEI Clients | |
60 | */ | |
61 | #define MEI_CLIENTS_MAX 256 | |
62 | ||
ab841160 OW |
63 | /* |
64 | * Number of File descriptors/handles | |
65 | * that can be opened to the driver. | |
66 | * | |
781d0d89 | 67 | * Limit to 255: 256 Total Clients |
1e2776c3 | 68 | * minus internal client for MEI Bus Messags |
ab841160 | 69 | */ |
781d0d89 | 70 | #define MEI_MAX_OPEN_HANDLE_COUNT (MEI_CLIENTS_MAX - 1) |
ab841160 | 71 | |
1d3f3da3 TW |
72 | /* |
73 | * Internal Clients Number | |
74 | */ | |
781d0d89 TW |
75 | #define MEI_HOST_CLIENT_ID_ANY (-1) |
76 | #define MEI_HBM_HOST_CLIENT_ID 0 /* not used, just for documentation */ | |
1d3f3da3 TW |
77 | #define MEI_WD_HOST_CLIENT_ID 1 |
78 | #define MEI_IAMTHIF_HOST_CLIENT_ID 2 | |
79 | ||
ab841160 OW |
80 | |
81 | /* File state */ | |
82 | enum file_state { | |
83 | MEI_FILE_INITIALIZING = 0, | |
84 | MEI_FILE_CONNECTING, | |
85 | MEI_FILE_CONNECTED, | |
86 | MEI_FILE_DISCONNECTING, | |
87 | MEI_FILE_DISCONNECTED | |
88 | }; | |
89 | ||
90 | /* MEI device states */ | |
b210d750 TW |
91 | enum mei_dev_state { |
92 | MEI_DEV_INITIALIZING = 0, | |
93 | MEI_DEV_INIT_CLIENTS, | |
94 | MEI_DEV_ENABLED, | |
0cfee51c | 95 | MEI_DEV_RESETTING, |
b210d750 | 96 | MEI_DEV_DISABLED, |
b210d750 TW |
97 | MEI_DEV_POWER_DOWN, |
98 | MEI_DEV_POWER_UP | |
ab841160 OW |
99 | }; |
100 | ||
b210d750 TW |
101 | const char *mei_dev_state_str(int state); |
102 | ||
ab841160 OW |
103 | enum iamthif_states { |
104 | MEI_IAMTHIF_IDLE, | |
105 | MEI_IAMTHIF_WRITING, | |
106 | MEI_IAMTHIF_FLOW_CONTROL, | |
107 | MEI_IAMTHIF_READING, | |
108 | MEI_IAMTHIF_READ_COMPLETE | |
109 | }; | |
110 | ||
111 | enum mei_file_transaction_states { | |
112 | MEI_IDLE, | |
113 | MEI_WRITING, | |
114 | MEI_WRITE_COMPLETE, | |
115 | MEI_FLOW_CONTROL, | |
116 | MEI_READING, | |
117 | MEI_READ_COMPLETE | |
118 | }; | |
119 | ||
c216fdeb TW |
120 | enum mei_wd_states { |
121 | MEI_WD_IDLE, | |
122 | MEI_WD_RUNNING, | |
123 | MEI_WD_STOPPING, | |
124 | }; | |
125 | ||
4b8960b4 TW |
126 | /** |
127 | * enum mei_cb_file_ops - file operation associated with the callback | |
128 | * @MEI_FOP_READ - read | |
129 | * @MEI_FOP_WRITE - write | |
130 | * @MEI_FOP_IOCTL - ioctl | |
131 | * @MEI_FOP_OPEN - open | |
132 | * @MEI_FOP_CLOSE - close | |
133 | */ | |
134 | enum mei_cb_file_ops { | |
135 | MEI_FOP_READ = 0, | |
136 | MEI_FOP_WRITE, | |
137 | MEI_FOP_IOCTL, | |
138 | MEI_FOP_OPEN, | |
139 | MEI_FOP_CLOSE | |
ab841160 OW |
140 | }; |
141 | ||
142 | /* | |
143 | * Intel MEI message data struct | |
144 | */ | |
4234a6de | 145 | struct mei_msg_data { |
ab841160 | 146 | u32 size; |
edf1eed4 | 147 | unsigned char *data; |
f060939d | 148 | }; |
ab841160 | 149 | |
db7da79d TW |
150 | /** |
151 | * struct mei_me_client - representation of me (fw) client | |
152 | * | |
153 | * @props - client properties | |
154 | * @client_id - me client id | |
155 | * @mei_flow_ctrl_creds - flow control credits | |
156 | */ | |
157 | struct mei_me_client { | |
158 | struct mei_client_properties props; | |
159 | u8 client_id; | |
160 | u8 mei_flow_ctrl_creds; | |
161 | }; | |
162 | ||
ab841160 | 163 | |
db3ed431 TW |
164 | struct mei_cl; |
165 | ||
4b8960b4 | 166 | /** |
db3ed431 TW |
167 | * struct mei_cl_cb - file operation callback structure |
168 | * | |
169 | * @cl - file client who is running this operation | |
4b8960b4 | 170 | * @fop_type - file operation type |
db3ed431 | 171 | */ |
ab841160 | 172 | struct mei_cl_cb { |
fb601adb | 173 | struct list_head list; |
db3ed431 | 174 | struct mei_cl *cl; |
4b8960b4 | 175 | enum mei_cb_file_ops fop_type; |
4234a6de TW |
176 | struct mei_msg_data request_buffer; |
177 | struct mei_msg_data response_buffer; | |
ebb108ef | 178 | unsigned long buf_idx; |
ab841160 OW |
179 | unsigned long read_time; |
180 | struct file *file_object; | |
181 | }; | |
182 | ||
183 | /* MEI client instance carried as file->pirvate_data*/ | |
184 | struct mei_cl { | |
185 | struct list_head link; | |
186 | struct mei_device *dev; | |
187 | enum file_state state; | |
188 | wait_queue_head_t tx_wait; | |
189 | wait_queue_head_t rx_wait; | |
190 | wait_queue_head_t wait; | |
ab841160 OW |
191 | int status; |
192 | /* ID of client connected */ | |
193 | u8 host_client_id; | |
194 | u8 me_client_id; | |
195 | u8 mei_flow_ctrl_creds; | |
196 | u8 timer_count; | |
197 | enum mei_file_transaction_states reading_state; | |
198 | enum mei_file_transaction_states writing_state; | |
ab841160 | 199 | struct mei_cl_cb *read_cb; |
a7b71bc0 SO |
200 | |
201 | /* MEI CL bus data */ | |
202 | struct mei_cl_device *device; | |
203 | struct list_head device_link; | |
204 | uuid_le device_uuid; | |
ab841160 OW |
205 | }; |
206 | ||
827eef51 TW |
207 | /** struct mei_hw_ops |
208 | * | |
827eef51 TW |
209 | * @host_is_ready - query for host readiness |
210 | ||
211 | * @hw_is_ready - query if hw is ready | |
212 | * @hw_reset - reset hw | |
aafae7ec | 213 | * @hw_start - start hw after reset |
827eef51 TW |
214 | * @hw_config - configure hw |
215 | ||
216 | * @intr_clear - clear pending interrupts | |
217 | * @intr_enable - enable interrupts | |
218 | * @intr_disable - disable interrupts | |
219 | ||
220 | * @hbuf_free_slots - query for write buffer empty slots | |
221 | * @hbuf_is_ready - query if write buffer is empty | |
222 | * @hbuf_max_len - query for write buffer max len | |
223 | ||
224 | * @write - write a message to FW | |
225 | ||
226 | * @rdbuf_full_slots - query how many slots are filled | |
227 | ||
228 | * @read_hdr - get first 4 bytes (header) | |
229 | * @read - read a buffer from the FW | |
230 | */ | |
231 | struct mei_hw_ops { | |
232 | ||
827eef51 TW |
233 | bool (*host_is_ready) (struct mei_device *dev); |
234 | ||
235 | bool (*hw_is_ready) (struct mei_device *dev); | |
236 | void (*hw_reset) (struct mei_device *dev, bool enable); | |
aafae7ec | 237 | int (*hw_start) (struct mei_device *dev); |
827eef51 TW |
238 | void (*hw_config) (struct mei_device *dev); |
239 | ||
240 | void (*intr_clear) (struct mei_device *dev); | |
241 | void (*intr_enable) (struct mei_device *dev); | |
242 | void (*intr_disable) (struct mei_device *dev); | |
243 | ||
244 | int (*hbuf_free_slots) (struct mei_device *dev); | |
245 | bool (*hbuf_is_ready) (struct mei_device *dev); | |
246 | size_t (*hbuf_max_len) (const struct mei_device *dev); | |
247 | ||
248 | int (*write)(struct mei_device *dev, | |
249 | struct mei_msg_hdr *hdr, | |
250 | unsigned char *buf); | |
251 | ||
252 | int (*rdbuf_full_slots)(struct mei_device *dev); | |
253 | ||
254 | u32 (*read_hdr)(const struct mei_device *dev); | |
255 | int (*read) (struct mei_device *dev, | |
256 | unsigned char *buf, unsigned long len); | |
257 | }; | |
258 | ||
e5354107 | 259 | /* MEI bus API*/ |
3e833295 SO |
260 | |
261 | /** | |
e46980a1 | 262 | * struct mei_cl_ops - MEI CL device ops |
3e833295 | 263 | * This structure allows ME host clients to implement technology |
e46980a1 | 264 | * specific operations. |
3e833295 | 265 | * |
e46980a1 SO |
266 | * @enable: Enable an MEI CL device. Some devices require specific |
267 | * HECI commands to initialize completely. | |
268 | * @disable: Disable an MEI CL device. | |
3e833295 SO |
269 | * @send: Tx hook for the device. This allows ME host clients to trap |
270 | * the device driver buffers before actually physically | |
271 | * pushing it to the ME. | |
272 | * @recv: Rx hook for the device. This allows ME host clients to trap the | |
273 | * ME buffers before forwarding them to the device driver. | |
274 | */ | |
e46980a1 SO |
275 | struct mei_cl_ops { |
276 | int (*enable)(struct mei_cl_device *device); | |
277 | int (*disable)(struct mei_cl_device *device); | |
3e833295 SO |
278 | int (*send)(struct mei_cl_device *device, u8 *buf, size_t length); |
279 | int (*recv)(struct mei_cl_device *device, u8 *buf, size_t length); | |
280 | }; | |
281 | ||
e46980a1 SO |
282 | struct mei_cl_device *mei_cl_add_device(struct mei_device *dev, |
283 | uuid_le uuid, char *name, | |
284 | struct mei_cl_ops *ops); | |
285 | void mei_cl_remove_device(struct mei_cl_device *device); | |
286 | ||
287 | int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length); | |
288 | int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length); | |
289 | int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length); | |
cf3baefb SO |
290 | void mei_cl_bus_rx_event(struct mei_cl *cl); |
291 | int mei_cl_bus_init(void); | |
292 | void mei_cl_bus_exit(void); | |
293 | ||
294 | ||
e5354107 SO |
295 | /** |
296 | * struct mei_cl_device - MEI device handle | |
297 | * An mei_cl_device pointer is returned from mei_add_device() | |
298 | * and links MEI bus clients to their actual ME host client pointer. | |
299 | * Drivers for MEI devices will get an mei_cl_device pointer | |
300 | * when being probed and shall use it for doing ME bus I/O. | |
301 | * | |
302 | * @dev: linux driver model device pointer | |
303 | * @uuid: me client uuid | |
304 | * @cl: mei client | |
3e833295 SO |
305 | * @ops: ME transport ops |
306 | * @event_cb: Drivers register this callback to get asynchronous ME | |
307 | * events (e.g. Rx buffer pending) notifications. | |
308 | * @events: Events bitmask sent to the driver. | |
e5354107 SO |
309 | * @priv_data: client private data |
310 | */ | |
311 | struct mei_cl_device { | |
312 | struct device dev; | |
313 | ||
314 | struct mei_cl *cl; | |
315 | ||
e46980a1 | 316 | const struct mei_cl_ops *ops; |
3e833295 SO |
317 | |
318 | struct work_struct event_work; | |
319 | mei_cl_event_cb_t event_cb; | |
320 | void *event_context; | |
321 | unsigned long events; | |
322 | ||
e5354107 SO |
323 | void *priv_data; |
324 | }; | |
325 | ||
24aadc80 | 326 | /** |
5fb54fb4 | 327 | * struct mei_device - MEI private device struct |
330dd7da | 328 | |
9b0d5efc | 329 | * @hbm_state - state of host bus message protocol |
fecb0d58 | 330 | * @mem_addr - mem mapped base register address |
330dd7da TW |
331 | |
332 | * @hbuf_depth - depth of hardware host/write buffer is slots | |
333 | * @hbuf_is_ready - query if the host host/write buffer is ready | |
334 | * @wr_msg - the buffer for hbm control messages | |
335 | * @wr_ext_msg - the buffer for hbm control responses (set in read cycle) | |
24aadc80 | 336 | */ |
ab841160 OW |
337 | struct mei_device { |
338 | struct pci_dev *pdev; /* pointer to pci device struct */ | |
339 | /* | |
340 | * lists of queues | |
341 | */ | |
e773efc4 | 342 | /* array of pointers to aio lists */ |
fb601adb TW |
343 | struct mei_cl_cb read_list; /* driver read queue */ |
344 | struct mei_cl_cb write_list; /* driver write queue */ | |
345 | struct mei_cl_cb write_waiting_list; /* write waiting queue */ | |
346 | struct mei_cl_cb ctrl_wr_list; /* managed write IOCTL list */ | |
347 | struct mei_cl_cb ctrl_rd_list; /* managed read IOCTL list */ | |
ab841160 | 348 | |
ab841160 OW |
349 | /* |
350 | * list of files | |
351 | */ | |
352 | struct list_head file_list; | |
eb9af0ac | 353 | long open_handle_count; |
fecb0d58 | 354 | |
ab841160 OW |
355 | /* |
356 | * lock for the device | |
357 | */ | |
358 | struct mutex device_lock; /* device lock */ | |
a61c6530 | 359 | struct delayed_work timer_work; /* MEI timer delayed work (timeouts) */ |
aafae7ec TW |
360 | |
361 | bool recvd_hw_ready; | |
ab841160 OW |
362 | /* |
363 | * waiting queue for receive message from FW | |
364 | */ | |
aafae7ec | 365 | wait_queue_head_t wait_hw_ready; |
ab841160 OW |
366 | wait_queue_head_t wait_recvd_msg; |
367 | wait_queue_head_t wait_stop_wd; | |
368 | ||
369 | /* | |
370 | * mei device states | |
371 | */ | |
b210d750 | 372 | enum mei_dev_state dev_state; |
9b0d5efc | 373 | enum mei_hbm_state hbm_state; |
ab841160 | 374 | u16 init_clients_timer; |
ab841160 | 375 | |
edf1eed4 | 376 | unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */ |
ab841160 | 377 | u32 rd_msg_hdr; |
e46f1874 | 378 | |
330dd7da TW |
379 | /* write buffer */ |
380 | u8 hbuf_depth; | |
381 | bool hbuf_is_ready; | |
382 | ||
e46f1874 TW |
383 | /* used for control messages */ |
384 | struct { | |
385 | struct mei_msg_hdr hdr; | |
386 | unsigned char data[128]; | |
387 | } wr_msg; | |
388 | ||
5fb54fb4 TW |
389 | struct { |
390 | struct mei_msg_hdr hdr; | |
391 | unsigned char data[4]; /* All HBM messages are 4 bytes */ | |
392 | } wr_ext_msg; /* for control responses */ | |
ab841160 OW |
393 | |
394 | struct hbm_version version; | |
395 | ||
ab841160 OW |
396 | struct mei_me_client *me_clients; /* Note: memory has to be allocated */ |
397 | DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX); | |
398 | DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX); | |
cf9673da | 399 | u8 me_clients_num; |
ab841160 OW |
400 | u8 me_client_presentation_num; |
401 | u8 me_client_index; | |
402 | ||
eb9af0ac | 403 | struct mei_cl wd_cl; |
c216fdeb | 404 | enum mei_wd_states wd_state; |
eb9af0ac | 405 | bool wd_pending; |
c216fdeb | 406 | u16 wd_timeout; |
248ffdf7 | 407 | unsigned char wd_data[MEI_WD_START_MSG_SIZE]; |
ab841160 OW |
408 | |
409 | ||
e773efc4 TW |
410 | /* amthif list for cmd waiting */ |
411 | struct mei_cl_cb amthif_cmd_list; | |
412 | /* driver managed amthif list for reading completed amthif cmd data */ | |
413 | struct mei_cl_cb amthif_rd_complete_list; | |
ab841160 OW |
414 | struct file *iamthif_file_object; |
415 | struct mei_cl iamthif_cl; | |
eb9af0ac | 416 | struct mei_cl_cb *iamthif_current_cb; |
ab841160 OW |
417 | int iamthif_mtu; |
418 | unsigned long iamthif_timer; | |
419 | u32 iamthif_stall_timer; | |
420 | unsigned char *iamthif_msg_buf; /* Note: memory has to be allocated */ | |
421 | u32 iamthif_msg_buf_size; | |
422 | u32 iamthif_msg_buf_index; | |
ab841160 | 423 | enum iamthif_states iamthif_state; |
eb9af0ac TW |
424 | bool iamthif_flow_control_pending; |
425 | bool iamthif_ioctl; | |
426 | bool iamthif_canceled; | |
c1174c0e SO |
427 | |
428 | struct work_struct init_work; | |
827eef51 | 429 | |
a7b71bc0 SO |
430 | /* List of bus devices */ |
431 | struct list_head device_list; | |
432 | ||
30e53bb8 TW |
433 | #if IS_ENABLED(CONFIG_DEBUG_FS) |
434 | struct dentry *dbgfs_dir; | |
435 | #endif /* CONFIG_DEBUG_FS */ | |
436 | ||
437 | ||
827eef51 | 438 | const struct mei_hw_ops *ops; |
52c34561 | 439 | char hw[0] __aligned(sizeof(void *)); |
ab841160 OW |
440 | }; |
441 | ||
3870c320 TW |
442 | static inline unsigned long mei_secs_to_jiffies(unsigned long sec) |
443 | { | |
444 | return msecs_to_jiffies(sec * MSEC_PER_SEC); | |
445 | } | |
446 | ||
c8c8d080 TW |
447 | /** |
448 | * mei_data2slots - get slots - number of (dwords) from a message length | |
449 | * + size of the mei header | |
450 | * @length - size of the messages in bytes | |
451 | * returns - number of slots | |
452 | */ | |
453 | static inline u32 mei_data2slots(size_t length) | |
454 | { | |
455 | return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4); | |
456 | } | |
457 | ||
ab841160 OW |
458 | /* |
459 | * mei init function prototypes | |
460 | */ | |
52c34561 | 461 | void mei_device_init(struct mei_device *dev); |
ab841160 | 462 | void mei_reset(struct mei_device *dev, int interrupts); |
c4d589be | 463 | int mei_start(struct mei_device *dev); |
7cb035d9 | 464 | void mei_stop(struct mei_device *dev); |
c95efb74 | 465 | |
c95efb74 TW |
466 | /* |
467 | * MEI interrupt functions prototype | |
ab841160 | 468 | */ |
06ecd645 | 469 | |
a61c6530 | 470 | void mei_timer(struct work_struct *work); |
06ecd645 TW |
471 | int mei_irq_read_handler(struct mei_device *dev, |
472 | struct mei_cl_cb *cmpl_list, s32 *slots); | |
473 | ||
474 | int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); | |
4c6e22b8 | 475 | void mei_irq_compl_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list); |
ab841160 | 476 | |
19838fb8 TW |
477 | /* |
478 | * AMTHIF - AMT Host Interface Functions | |
479 | */ | |
480 | void mei_amthif_reset_params(struct mei_device *dev); | |
481 | ||
781d0d89 | 482 | int mei_amthif_host_init(struct mei_device *dev); |
19838fb8 TW |
483 | |
484 | int mei_amthif_write(struct mei_device *dev, struct mei_cl_cb *priv_cb); | |
485 | ||
486 | int mei_amthif_read(struct mei_device *dev, struct file *file, | |
744f0f2f TW |
487 | char __user *ubuf, size_t length, loff_t *offset); |
488 | ||
489 | unsigned int mei_amthif_poll(struct mei_device *dev, | |
490 | struct file *file, poll_table *wait); | |
ab841160 | 491 | |
a562d5c2 TW |
492 | int mei_amthif_release(struct mei_device *dev, struct file *file); |
493 | ||
19838fb8 | 494 | struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev, |
ab841160 OW |
495 | struct file *file); |
496 | ||
19838fb8 TW |
497 | void mei_amthif_run_next_cmd(struct mei_device *dev); |
498 | ||
6220d6a0 TW |
499 | int mei_amthif_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb, |
500 | s32 *slots, struct mei_cl_cb *cmpl_list); | |
5ceb46e2 TW |
501 | |
502 | void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb); | |
503 | int mei_amthif_irq_read_msg(struct mei_device *dev, | |
504 | struct mei_msg_hdr *mei_hdr, | |
505 | struct mei_cl_cb *complete_list); | |
506 | int mei_amthif_irq_read(struct mei_device *dev, s32 *slots); | |
507 | ||
59fcd7c6 SO |
508 | /* |
509 | * NFC functions | |
510 | */ | |
511 | int mei_nfc_host_init(struct mei_device *dev); | |
512 | void mei_nfc_host_exit(void); | |
513 | ||
514 | /* | |
515 | * NFC Client UUID | |
516 | */ | |
517 | extern const uuid_le mei_nfc_guid; | |
19838fb8 | 518 | |
37e7d6e7 TW |
519 | int mei_wd_send(struct mei_device *dev); |
520 | int mei_wd_stop(struct mei_device *dev); | |
521 | int mei_wd_host_init(struct mei_device *dev); | |
522 | /* | |
523 | * mei_watchdog_register - Registering watchdog interface | |
524 | * once we got connection to the WD Client | |
525 | * @dev - mei device | |
526 | */ | |
527 | void mei_watchdog_register(struct mei_device *dev); | |
528 | /* | |
529 | * mei_watchdog_unregister - Unregistering watchdog interface | |
530 | * @dev - mei device | |
531 | */ | |
532 | void mei_watchdog_unregister(struct mei_device *dev); | |
533 | ||
ab841160 OW |
534 | /* |
535 | * Register Access Function | |
536 | */ | |
537 | ||
827eef51 TW |
538 | static inline void mei_hw_config(struct mei_device *dev) |
539 | { | |
540 | dev->ops->hw_config(dev); | |
541 | } | |
542 | static inline void mei_hw_reset(struct mei_device *dev, bool enable) | |
543 | { | |
544 | dev->ops->hw_reset(dev, enable); | |
545 | } | |
546 | ||
aafae7ec TW |
547 | static inline void mei_hw_start(struct mei_device *dev) |
548 | { | |
549 | dev->ops->hw_start(dev); | |
550 | } | |
551 | ||
827eef51 TW |
552 | static inline void mei_clear_interrupts(struct mei_device *dev) |
553 | { | |
554 | dev->ops->intr_clear(dev); | |
555 | } | |
556 | ||
557 | static inline void mei_enable_interrupts(struct mei_device *dev) | |
558 | { | |
559 | dev->ops->intr_enable(dev); | |
560 | } | |
ab841160 | 561 | |
827eef51 TW |
562 | static inline void mei_disable_interrupts(struct mei_device *dev) |
563 | { | |
564 | dev->ops->intr_disable(dev); | |
565 | } | |
ab841160 | 566 | |
827eef51 TW |
567 | static inline bool mei_host_is_ready(struct mei_device *dev) |
568 | { | |
569 | return dev->ops->host_is_ready(dev); | |
570 | } | |
571 | static inline bool mei_hw_is_ready(struct mei_device *dev) | |
572 | { | |
573 | return dev->ops->hw_is_ready(dev); | |
574 | } | |
e7e0c231 | 575 | |
827eef51 TW |
576 | static inline bool mei_hbuf_is_ready(struct mei_device *dev) |
577 | { | |
578 | return dev->ops->hbuf_is_ready(dev); | |
579 | } | |
ab841160 | 580 | |
827eef51 TW |
581 | static inline int mei_hbuf_empty_slots(struct mei_device *dev) |
582 | { | |
583 | return dev->ops->hbuf_free_slots(dev); | |
584 | } | |
115ba28c | 585 | |
827eef51 TW |
586 | static inline size_t mei_hbuf_max_len(const struct mei_device *dev) |
587 | { | |
588 | return dev->ops->hbuf_max_len(dev); | |
589 | } | |
3a65dd4e | 590 | |
827eef51 TW |
591 | static inline int mei_write_message(struct mei_device *dev, |
592 | struct mei_msg_hdr *hdr, | |
593 | unsigned char *buf) | |
594 | { | |
595 | return dev->ops->write(dev, hdr, buf); | |
596 | } | |
597 | ||
598 | static inline u32 mei_read_hdr(const struct mei_device *dev) | |
599 | { | |
600 | return dev->ops->read_hdr(dev); | |
601 | } | |
602 | ||
603 | static inline void mei_read_slots(struct mei_device *dev, | |
604 | unsigned char *buf, unsigned long len) | |
605 | { | |
606 | dev->ops->read(dev, buf, len); | |
607 | } | |
608 | ||
609 | static inline int mei_count_full_read_slots(struct mei_device *dev) | |
610 | { | |
611 | return dev->ops->rdbuf_full_slots(dev); | |
612 | } | |
5bd64714 | 613 | |
30e53bb8 TW |
614 | #if IS_ENABLED(CONFIG_DEBUG_FS) |
615 | int mei_dbgfs_register(struct mei_device *dev, const char *name); | |
616 | void mei_dbgfs_deregister(struct mei_device *dev); | |
617 | #else | |
618 | static inline int mei_dbgfs_register(struct mei_device *dev, const char *name) | |
619 | { | |
620 | return 0; | |
621 | } | |
622 | static inline void mei_dbgfs_deregister(struct mei_device *dev) {} | |
623 | #endif /* CONFIG_DEBUG_FS */ | |
624 | ||
625 | int mei_register(struct mei_device *dev); | |
626 | void mei_deregister(struct mei_device *dev); | |
2703d4b2 | 627 | |
15d4acc5 TW |
628 | #define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d comp=%1d" |
629 | #define MEI_HDR_PRM(hdr) \ | |
630 | (hdr)->host_addr, (hdr)->me_addr, \ | |
631 | (hdr)->length, (hdr)->msg_complete | |
632 | ||
ab841160 | 633 | #endif |