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1 | /* |
2 | * Copyright 2010-2017 Intel Corporation. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License, version 2, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * Disclaimer: The codes contained in these modules may be specific to | |
14 | * the Intel Software Development Platform codenamed Knights Ferry, | |
15 | * and the Intel product codenamed Knights Corner, and are not backward | |
16 | * compatible with other Intel products. Additionally, Intel will NOT | |
17 | * support the codes or instruction set in future products. | |
18 | * | |
19 | * Intel offers no warranty of any kind regarding the code. This code is | |
20 | * licensed on an "AS IS" basis and Intel is not obligated to provide | |
21 | * any support, assistance, installation, training, or other services | |
22 | * of any kind. Intel is also not obligated to provide any updates, | |
23 | * enhancements or extensions. Intel specifically disclaims any warranty | |
24 | * of merchantability, non-infringement, fitness for any particular | |
25 | * purpose, and any other warranty. | |
26 | * | |
27 | * Further, Intel disclaims all liability of any kind, including but | |
28 | * not limited to liability for infringement of any proprietary rights, | |
29 | * relating to the use of the code, even if Intel is notified of the | |
30 | * possibility of such liability. Except as expressly stated in an Intel | |
31 | * license agreement provided with this code and agreed upon with Intel, | |
32 | * no license, express or implied, by estoppel or otherwise, to any | |
33 | * intellectual property rights is granted herein. | |
34 | */ | |
35 | ||
36 | /* contains code to handle MIC IO control codes */ | |
37 | ||
38 | ||
39 | #include "mic_common.h" | |
40 | #include <linux/module.h> | |
41 | ||
42 | /* helper methods for debugging/unit testing /*/ | |
43 | static int check_test_msg(mic_ctx_t *mic_ctx, void *buf, uint32_t len); | |
44 | ||
45 | ||
46 | ||
47 | #define PM_MMIO_REGVALUE_GET(_name, _offset) \ | |
48 | int get_##_name(void *data, uint64_t *value) \ | |
49 | { \ | |
50 | uint64_t bid; \ | |
51 | mic_ctx_t *mic_ctx; \ | |
52 | \ | |
53 | bid = (uint64_t)data; \ | |
54 | if (bid >= mic_data.dd_numdevs) { \ | |
55 | return -EINVAL; \ | |
56 | } \ | |
57 | mic_ctx = get_per_dev_ctx(bid); \ | |
58 | if (!mic_ctx) { \ | |
59 | printk("DD"); \ | |
60 | return -EINVAL; \ | |
61 | } \ | |
62 | \ | |
63 | *value = pm_reg_read(mic_ctx, _offset); \ | |
64 | return 0; \ | |
65 | } \ | |
66 | DEFINE_SIMPLE_ATTRIBUTE(fops_##_name, get_##_name, NULL, "%llu"); \ | |
67 | ||
68 | static PM_MMIO_REGVALUE_GET(svidctrl, SBOX_SVID_CONTROL); | |
69 | static PM_MMIO_REGVALUE_GET(pcuctrl, SBOX_PCU_CONTROL); | |
70 | static PM_MMIO_REGVALUE_GET(hoststate,SBOX_HOST_PMSTATE); | |
71 | static PM_MMIO_REGVALUE_GET(cardstate, SBOX_UOS_PMSTATE); | |
72 | static PM_MMIO_REGVALUE_GET(wtimer, SBOX_C3WAKEUP_TIMER); | |
73 | static PM_MMIO_REGVALUE_GET(gpmctrl, GBOX_PM_CTRL); | |
74 | static PM_MMIO_REGVALUE_GET(core_volt, SBOX_COREVOLT); | |
75 | static PM_MMIO_REGVALUE_GET(uos_pcuctrl, SBOX_UOS_PCUCONTROL); | |
76 | ||
77 | static int depgraph_j2i_show(struct seq_file *s, void *pos) | |
78 | { | |
79 | uint64_t bid = (uint64_t)s->private; | |
80 | mic_ctx_t *mic_ctx; | |
81 | int i, j; | |
82 | ||
83 | mic_ctx = get_per_dev_ctx(bid); | |
84 | if (!mic_ctx) { | |
85 | return -EINVAL; | |
86 | } | |
87 | ||
88 | seq_printf(s,"=================================================================\n"); | |
89 | seq_printf(s,"%-10s |%-25s\n", "Scif Node" , "dependent nodes"); | |
90 | seq_printf(s,"=================================================================\n"); | |
91 | ||
92 | for ( i = 0; i <= ms_info.mi_maxid; i++) { | |
93 | seq_printf(s, "%-10d |", i); | |
94 | for (j = 0; j <= ms_info.mi_maxid; j++) { | |
95 | switch(ms_info.mi_depmtrx[j][i]) { | |
96 | case DEP_STATE_DEPENDENT: | |
97 | { | |
98 | /* (A) - active dependency on node i */ | |
99 | seq_printf(s, "%d(A),", j); | |
100 | break; | |
101 | } | |
102 | case DEP_STATE_DISCONNECT_READY: | |
103 | { | |
104 | /* (R) - node j has sent PC6 ready message to the host | |
105 | * dependency is not active so node i can go idle | |
106 | */ | |
107 | seq_printf(s, "%d(R),", j); | |
108 | break; | |
109 | } | |
110 | case DEP_STATE_DISCONNECTED: | |
111 | { | |
112 | /* (D) - node j is in idle state. | |
113 | * dependency is not active so node i can go idle | |
114 | */ | |
115 | seq_printf(s, "%d(D),", j); | |
116 | break; | |
117 | } | |
118 | } | |
119 | } | |
120 | seq_printf(s,"\n=================================================================\n"); | |
121 | } | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | static int depgraph_j2i_open(struct inode *inode, struct file *file) | |
127 | { | |
128 | return single_open(file, depgraph_j2i_show, inode->i_private); | |
129 | } | |
130 | ||
131 | static struct file_operations depgraph_j2i_file_ops = { | |
132 | .owner = THIS_MODULE, | |
133 | .open = depgraph_j2i_open, | |
134 | .read = seq_read, | |
135 | .llseek = seq_lseek, | |
136 | .release = single_release | |
137 | }; | |
138 | ||
139 | static int depgraph_i2j_show(struct seq_file *s, void *pos) | |
140 | { | |
141 | uint64_t bid = (uint64_t)s->private; | |
142 | mic_ctx_t *mic_ctx; | |
143 | int i, j; | |
144 | ||
145 | mic_ctx = get_per_dev_ctx(bid); | |
146 | if (!mic_ctx) { | |
147 | return -EINVAL; | |
148 | } | |
149 | ||
150 | seq_printf(s,"=================================================================\n"); | |
151 | seq_printf(s,"%-10s |%-25s\n", "Scif Node" , "is dependent on Nodes"); | |
152 | seq_printf(s,"=================================================================\n"); | |
153 | ||
154 | for ( i = 0; i <= ms_info.mi_maxid; i++) { | |
155 | seq_printf(s, "%-10d |", i); | |
156 | for (j = 0; j <= ms_info.mi_maxid; j++) { | |
157 | switch(ms_info.mi_depmtrx[i][j]) { | |
158 | case DEP_STATE_DEPENDENT: | |
159 | { | |
160 | /* (A) - active dependency on node j */ | |
161 | seq_printf(s, "%d(A),", j); | |
162 | break; | |
163 | } | |
164 | case DEP_STATE_DISCONNECT_READY: | |
165 | { | |
166 | /* (R) - node j has sent PC6 ready message to the host */ | |
167 | seq_printf(s, "%d(R),", j); | |
168 | break; | |
169 | } | |
170 | case DEP_STATE_DISCONNECTED: | |
171 | { | |
172 | /* (D) - node j is in idle state. | |
173 | * This should not happen unless node i itself is in idle state | |
174 | */ | |
175 | seq_printf(s, "%d(D),", j); | |
176 | break; | |
177 | } | |
178 | } | |
179 | } | |
180 | seq_printf(s,"\n=================================================================\n"); | |
181 | } | |
182 | ||
183 | return 0; | |
184 | } | |
185 | ||
186 | static int depgraph_i2j_open(struct inode *inode, struct file *file) | |
187 | { | |
188 | return single_open(file, depgraph_i2j_show, inode->i_private); | |
189 | } | |
190 | ||
191 | static struct file_operations depgraph_i2j_file_ops = { | |
192 | .owner = THIS_MODULE, | |
193 | .open = depgraph_i2j_open, | |
194 | .read = seq_read, | |
195 | .llseek = seq_lseek, | |
196 | .release = single_release | |
197 | }; | |
198 | ||
199 | static int connection_info_show(struct seq_file *s, void *pos) { | |
200 | ||
201 | uint64_t bid = (uint64_t)s->private; | |
202 | mic_ctx_t *mic_ctx; | |
203 | int count = 0; | |
204 | struct list_head *position, *tmpq; | |
205 | ||
206 | mic_ctx = get_per_dev_ctx(bid); | |
207 | if (!mic_ctx) { | |
208 | return -EINVAL; | |
209 | } | |
210 | ||
211 | seq_printf(s,"=========================================================================\n"); | |
212 | if(mic_ctx->micpm_ctx.pm_epd != NULL) { | |
213 | seq_printf(s, "%-35s | %35d\n", "Local Node", mic_ctx->micpm_ctx.pm_epd->port.node); | |
214 | seq_printf(s, "%-35s | %35d\n", "Local Port", mic_ctx->micpm_ctx.pm_epd->port.port); | |
215 | seq_printf(s, "%-35s | %35d\n", "Remote Node", mic_ctx->micpm_ctx.pm_epd->peer.node); | |
216 | seq_printf(s, "%-35s | %35d\n", "Remote Port", mic_ctx->micpm_ctx.pm_epd->peer.port); | |
217 | seq_printf(s, "%-35s | %35d\n", "Connection state", mic_ctx->micpm_ctx.pm_epd->state); | |
218 | if(!list_empty(&mic_ctx->micpm_ctx.msg_list)) { | |
219 | list_for_each_safe(position, tmpq, &mic_ctx->micpm_ctx.msg_list) { | |
220 | count++; | |
221 | } | |
222 | } else { | |
223 | count = 0; | |
224 | } | |
225 | seq_printf(s, "%-35s | %35d\n", "Messages in queue", count); | |
226 | } else { | |
227 | seq_printf(s, "%s\n", "No PM connection found"); | |
228 | } | |
229 | seq_printf(s,"=========================================================================\n"); | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | static int connection_info_open(struct inode *inode, struct file *file) | |
235 | { | |
236 | return single_open(file, connection_info_show, inode->i_private); | |
237 | } | |
238 | ||
239 | static struct file_operations connection_info_file_ops = { | |
240 | .owner = THIS_MODULE, | |
241 | .open = connection_info_open, | |
242 | .read = seq_read, | |
243 | .llseek = seq_lseek, | |
244 | .release = single_release | |
245 | }; | |
246 | ||
247 | static int active_set_show(struct seq_file *s, void *pos) { | |
248 | ||
249 | uint64_t bid = (uint64_t)s->private; | |
250 | mic_ctx_t *mic_ctx; | |
251 | int i, j = 0; | |
252 | uint8_t *nodemask; | |
253 | uint8_t *temp_buf_ptr; | |
254 | ||
255 | mic_ctx = get_per_dev_ctx(bid); | |
256 | if (!mic_ctx) { | |
257 | return -EINVAL; | |
258 | } | |
259 | ||
260 | nodemask = (uint8_t*) kzalloc(mic_ctx->micpm_ctx.nodemask.len, GFP_KERNEL); | |
261 | if (!nodemask) { | |
262 | seq_printf(s, "%s\n", "Cannot allocate buffer"); | |
263 | return 0; | |
264 | } | |
265 | ||
266 | if ((micscif_get_activeset(mic_ctx->bi_id + 1, nodemask))) { | |
267 | seq_printf(s, "%s\n", "Cannot calculate activation set"); | |
268 | kfree(nodemask); | |
269 | return 0; | |
270 | } | |
271 | ||
272 | seq_printf(s, "%s\n", "Nodes in activation set:"); | |
273 | temp_buf_ptr = nodemask; | |
274 | for ( i = 0; i < mic_ctx->micpm_ctx.nodemask.len; i++) { | |
275 | temp_buf_ptr = nodemask + i; | |
276 | for (j = 0; j < 8; j++) { | |
277 | if (*temp_buf_ptr & (1ULL << j)) | |
278 | seq_printf(s, "%d ", j + (i * 8)); | |
279 | } | |
280 | } | |
281 | seq_printf(s, "\n"); | |
282 | kfree(nodemask); | |
283 | return 0; | |
284 | } | |
285 | ||
286 | static int active_set_open(struct inode *inode, struct file *file) | |
287 | { | |
288 | return single_open(file, active_set_show, inode->i_private); | |
289 | } | |
290 | ||
291 | static struct file_operations activation_set_file_ops = { | |
292 | .owner = THIS_MODULE, | |
293 | .open = active_set_open, | |
294 | .read = seq_read, | |
295 | .llseek = seq_lseek, | |
296 | .release = single_release | |
297 | }; | |
298 | ||
299 | static int deactive_set_show(struct seq_file *s, void *pos) { | |
300 | ||
301 | uint64_t bid = (uint64_t)s->private; | |
302 | mic_ctx_t *mic_ctx; | |
303 | int i, j; | |
304 | uint8_t *nodemask; | |
305 | uint8_t *temp_buf_ptr; | |
306 | ||
307 | mic_ctx = get_per_dev_ctx(bid); | |
308 | if (!mic_ctx) { | |
309 | return -EINVAL; | |
310 | } | |
311 | ||
312 | nodemask = (uint8_t*) kzalloc(mic_ctx->micpm_ctx.nodemask.len, GFP_KERNEL); | |
313 | if (!nodemask) { | |
314 | seq_printf(s, "%s\n", "Cannot allocate buffer"); | |
315 | return 0; | |
316 | } | |
317 | ||
318 | if ((micscif_get_deactiveset(mic_ctx->bi_id +1, nodemask, 1))) { | |
319 | seq_printf(s, "%s\n", "Cannot calculate activation set"); | |
320 | kfree(nodemask); | |
321 | return 0; | |
322 | } | |
323 | ||
324 | seq_printf(s, "%s\n", "Nodes in deactivation set:"); | |
325 | temp_buf_ptr = nodemask; | |
326 | for ( i = 0; i < mic_ctx->micpm_ctx.nodemask.len; i++) { | |
327 | temp_buf_ptr = nodemask + i; | |
328 | for (j = 0; j < 8; j++) { | |
329 | if (*temp_buf_ptr & (1ULL << j)) | |
330 | seq_printf(s, "%d ", j + (i * 8)); | |
331 | } | |
332 | } | |
333 | seq_printf(s, "\n"); | |
334 | kfree(nodemask); | |
335 | return 0; | |
336 | } | |
337 | ||
338 | static int deactive_set_open(struct inode *inode, struct file *file) | |
339 | { | |
340 | return single_open(file, deactive_set_show, inode->i_private); | |
341 | } | |
342 | ||
343 | static struct file_operations deactivation_set_file_ops = { | |
344 | .owner = THIS_MODULE, | |
345 | .open = deactive_set_open, | |
346 | .read = seq_read, | |
347 | .llseek = seq_lseek, | |
348 | .release = single_release | |
349 | }; | |
350 | ||
351 | static int ospm_restart_show(struct seq_file *s, void *pos) { | |
352 | ||
353 | uint64_t bid = (uint64_t)s->private; | |
354 | mic_ctx_t *mic_ctx; | |
355 | int err; | |
356 | ||
357 | mic_ctx = get_per_dev_ctx(bid); | |
358 | if (!mic_ctx) { | |
359 | return -EINVAL; | |
360 | } | |
361 | ||
362 | err = pm_stop_device(mic_ctx); | |
363 | if(err) { | |
364 | seq_printf(s, "%s:%d\n", "Error calling pm_stop_device.", err); | |
365 | return err; | |
366 | } | |
367 | ||
368 | err = pm_start_device(mic_ctx); | |
369 | if(err) { | |
370 | seq_printf(s, "%s:%d\n", "Error calling pm_start_device.", err); | |
371 | return err; | |
372 | } | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | static int ospm_restart_open(struct inode *inode, struct file *file) | |
378 | { | |
379 | return single_open(file, ospm_restart_show, inode->i_private); | |
380 | } | |
381 | ||
382 | static struct file_operations ospm_restart_file_ops = { | |
383 | .owner = THIS_MODULE, | |
384 | .open = ospm_restart_open, | |
385 | .read = seq_read, | |
386 | .llseek = seq_lseek, | |
387 | .release = single_release | |
388 | }; | |
389 | ||
390 | static int testmsg_set(void *data, uint64_t value) | |
391 | { | |
392 | uint64_t bid; | |
393 | mic_ctx_t *mic_ctx; | |
394 | int err; | |
395 | ||
396 | bid = (uint64_t)data; | |
397 | if (bid >= mic_data.dd_numdevs) { | |
398 | return -EINVAL; | |
399 | } | |
400 | ||
401 | mic_ctx = get_per_dev_ctx(bid); | |
402 | if (!mic_ctx) { | |
403 | return -EINVAL; | |
404 | } | |
405 | ||
406 | if (value == 0) { | |
407 | return -EINVAL; | |
408 | } | |
409 | ||
410 | err = mic_pm_send_msg(mic_ctx ,PM_MESSAGE_TEST, PM_TEST_MSG_BODY, sizeof(PM_TEST_MSG_BODY)); | |
411 | return err; | |
412 | } | |
413 | ||
414 | static int testmsg_get(void *data, uint64_t *value) | |
415 | { | |
416 | uint64_t bid; | |
417 | mic_ctx_t *mic_ctx; | |
418 | int err; | |
419 | ||
420 | bid = (uint64_t)data; | |
421 | if (bid >= mic_data.dd_numdevs) { | |
422 | return -EINVAL; | |
423 | } | |
424 | ||
425 | mic_ctx = get_per_dev_ctx(bid); | |
426 | if (!mic_ctx) { | |
427 | return -EINVAL; | |
428 | } | |
429 | ||
430 | err = check_test_msg(mic_ctx,PM_TEST_MSG_BODY, sizeof(PM_TEST_MSG_BODY)); | |
431 | *value = err; | |
432 | ||
433 | return err; | |
434 | } | |
435 | DEFINE_SIMPLE_ATTRIBUTE(testmsg_fops, testmsg_get, testmsg_set, "%llu"); | |
436 | ||
437 | int | |
438 | micpm_dbg_init(mic_ctx_t *mic_ctx) | |
439 | { | |
440 | /* directory name will be in format micpmXXXXX | |
441 | * so assuming the name string wont excceed 12 characters */ | |
442 | const uint32_t DBG_DIRNAME_LENGTH = 12; | |
443 | char pmdbg_dir_name[DBG_DIRNAME_LENGTH]; | |
444 | micpm_ctx_t *micpm_ctx = &mic_ctx->micpm_ctx; | |
445 | struct dentry *mmiodir; | |
446 | uint64_t id = mic_ctx->bi_id; | |
447 | ||
448 | ||
449 | if(!mic_data.dd_pm.pmdbgparent_dir) { | |
450 | printk(KERN_ERR "%s: %d Parent debugfs directory does not exist.\n" | |
451 | "debugfs may not be supported in kernel", __func__, __LINE__); | |
452 | return -EOPNOTSUPP; | |
453 | } | |
454 | ||
455 | snprintf(pmdbg_dir_name, sizeof(pmdbg_dir_name), "micpm%d", mic_ctx->bi_id); | |
456 | micpm_ctx->pmdbg_dir = debugfs_create_dir | |
457 | (pmdbg_dir_name, mic_data.dd_pm.pmdbgparent_dir); | |
458 | if (!micpm_ctx->pmdbg_dir) { | |
459 | printk(KERN_ERR "%s: %d Failed in creating debugfs directory\n" | |
460 | "debugfs may noe be supported in kernel", __func__, __LINE__); | |
461 | return -EOPNOTSUPP; | |
462 | } | |
463 | ||
464 | /* Create debugfs entry to get/set idle state of the card known by host*/ | |
465 | debugfs_create_u32("idle_state", S_IRUGO | S_IWUSR, micpm_ctx->pmdbg_dir, &micpm_ctx->idle_state); | |
466 | ||
467 | /* | |
468 | * Create debugfs entry for sending PM_TEST_MESSAGE for testing communication to card | |
469 | * set value = PM_MESSAGE_TEST to send the message to card | |
470 | * get value to verfy that message was successfully sent, looped back by card and received.(0 = success) | |
471 | */ | |
472 | debugfs_create_file("testmsg", S_IRUGO | S_IWUSR, micpm_ctx->pmdbg_dir, (void*)id, &testmsg_fops); | |
473 | ||
474 | /* Create debugfs entry for showing for each node 'i' , all nodes 'j' i is dependent on */ | |
475 | debugfs_create_file("depgraph_i2j", | |
476 | S_IRUGO, | |
477 | micpm_ctx->pmdbg_dir, | |
478 | (void*)id, | |
479 | &depgraph_i2j_file_ops); | |
480 | ||
481 | /* Create debugfs entry for showing for each node 'i', all nodes 'j' which are dependent on 'i' */ | |
482 | debugfs_create_file("depgraph_j2i", | |
483 | S_IRUGO, | |
484 | micpm_ctx->pmdbg_dir, | |
485 | (void*)id, | |
486 | &depgraph_j2i_file_ops); | |
487 | ||
488 | /* Create debugfs entry for showing connection info for a node */ | |
489 | debugfs_create_file("connection_info", | |
490 | S_IRUGO, | |
491 | micpm_ctx->pmdbg_dir, | |
492 | (void*)id, | |
493 | &connection_info_file_ops); | |
494 | ||
495 | /* Create debugfs entry to initiate OSPM restart for a node */ | |
496 | debugfs_create_file("ospm_restart", | |
497 | S_IRUGO, | |
498 | micpm_ctx->pmdbg_dir, | |
499 | (void*)id, | |
500 | &ospm_restart_file_ops); | |
501 | ||
502 | /* Create debugfs entry to display activation set for a node */ | |
503 | debugfs_create_file("activation_set", | |
504 | S_IRUGO, | |
505 | micpm_ctx->pmdbg_dir, | |
506 | (void*)id, | |
507 | &activation_set_file_ops); | |
508 | ||
509 | /* Create debugfs entry to display de-activation set for a node */ | |
510 | debugfs_create_file("deactivation_set", | |
511 | S_IRUGO, | |
512 | micpm_ctx->pmdbg_dir, | |
513 | (void*)id, | |
514 | &deactivation_set_file_ops); | |
515 | ||
516 | /* Create debugfs entries for reading power management status/control register value in MMIO region */ | |
517 | mmiodir = debugfs_create_dir("mmio", micpm_ctx->pmdbg_dir); | |
518 | if (!mmiodir) { | |
519 | printk(KERN_ERR "%s: %d Failed in creating debugfs directory\n" | |
520 | "debugfs may noe be supported in kernel", __func__, __LINE__); | |
521 | return -EOPNOTSUPP; | |
522 | } | |
523 | debugfs_create_file("svidctrl", S_IRUGO, mmiodir,(void*)id, &fops_svidctrl); | |
524 | debugfs_create_file("pcuctrl", S_IRUGO, mmiodir,(void*)id, &fops_pcuctrl); | |
525 | debugfs_create_file("hoststate", S_IRUGO, mmiodir,(void*)id, &fops_hoststate); | |
526 | debugfs_create_file("cardstate", S_IRUGO, mmiodir,(void*)id, &fops_cardstate); | |
527 | debugfs_create_file("wtimer", S_IRUGO, mmiodir,(void*)id, &fops_wtimer); | |
528 | debugfs_create_file("gpmctrl", S_IRUGO, mmiodir,(void*)id, &fops_gpmctrl); | |
529 | debugfs_create_file("core_volt", S_IRUGO, mmiodir,(void*)id, &fops_core_volt); | |
530 | debugfs_create_file("uos_pcuctrl", S_IRUGO, mmiodir,(void*)id, &fops_uos_pcuctrl); | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | void micpm_dbg_parent_init(void) { | |
536 | mic_data.dd_pm.pmdbgparent_dir = debugfs_create_dir("micpm", NULL); | |
537 | if (!mic_data.dd_pm.pmdbgparent_dir) { | |
538 | PM_DEBUG("%s: %d Failed in creating debugfs directory\n" | |
539 | "debugfs may not be supported in kernel", __func__, __LINE__); | |
540 | } | |
541 | ||
542 | debugfs_create_u32("enable_pm_logging", S_IRUGO | S_IWUSR, | |
543 | mic_data.dd_pm.pmdbgparent_dir, &mic_data.dd_pm.enable_pm_logging); | |
544 | ||
545 | return; | |
546 | } | |
547 | ||
548 | ||
549 | /* | |
550 | * Test message is looped back to driver and lives in the message list. | |
551 | * This function retrieves the message and send it to user space which | |
552 | * can check if its the same message as that was sent. | |
553 | */ | |
554 | static int | |
555 | check_test_msg(mic_ctx_t *mic_ctx, void *buf, uint32_t len) | |
556 | { | |
557 | int err = -EINVAL; | |
558 | pm_recv_msg_t *recv_msg = NULL; | |
559 | struct list_head *pos = NULL, *tmpq = NULL; | |
560 | bool msg_found = false; | |
561 | ||
562 | if(len != sizeof(pm_msg_unit_test)) { | |
563 | pr_debug("Invalid Args: Size of buffer\n"); | |
564 | return -EINVAL; | |
565 | } | |
566 | ||
567 | mutex_lock(&mic_ctx->micpm_ctx.msg_mutex); | |
568 | if(!list_empty_careful(&mic_ctx->micpm_ctx.msg_list)) { | |
569 | list_for_each_safe(pos, tmpq, &mic_ctx->micpm_ctx.msg_list) { | |
570 | recv_msg = list_entry(pos, pm_recv_msg_t, msg); | |
571 | /*Do not touch the message if its not a test message */ | |
572 | if (recv_msg->msg_header.opcode == PM_MESSAGE_TEST) { | |
573 | list_del(&recv_msg->msg); | |
574 | msg_found = true; | |
575 | break; | |
576 | } | |
577 | } | |
578 | } else { | |
579 | pr_debug("empty message list \n"); | |
580 | goto no_msg; | |
581 | } | |
582 | ||
583 | if (msg_found == false) { | |
584 | pr_debug("Test msg not found \n"); | |
585 | goto no_msg; | |
586 | } | |
587 | ||
588 | if(recv_msg->msg_body == NULL) { | |
589 | pr_debug("Invalid source buffer\n"); | |
590 | goto list_free; | |
591 | } | |
592 | ||
593 | err = strncmp((char*)recv_msg->msg_body, (char*)buf, len); | |
594 | kfree(recv_msg->msg_body); | |
595 | ||
596 | list_free: | |
597 | kfree(recv_msg); | |
598 | ||
599 | no_msg: | |
600 | mutex_unlock(&mic_ctx->micpm_ctx.msg_mutex); | |
601 | return err; | |
602 | ||
603 | } |