1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * uncore-frquency-tpmi: Uncore frequency scaling using TPMI
4 *
5 * Copyright (c) 2023, Intel Corporation.
6 * All Rights Reserved.
7 *
8 * The hardware interface to read/write is basically substitution of
9 * MSR 0x620 and 0x621.
10 * There are specific MMIO offset and bits to get/set minimum and
11 * maximum uncore ratio, similar to MSRs.
12 * The scope of the uncore MSRs was package scope. But TPMI allows
13 * new gen CPUs to have multiple uncore controls at uncore-cluster
14 * level. Each package can have multiple power domains which further
15 * can have multiple clusters.
16 * Here number of power domains = number of resources in this aux
17 * device. There are offsets and bits to discover number of clusters
18 * and offset for each cluster level controls.
19 *
20 */
21
22 #include <linux/auxiliary_bus.h>
23 #include <linux/bitfield.h>
24 #include <linux/bits.h>
25 #include <linux/io.h>
26 #include <linux/module.h>
27 #include <linux/intel_tpmi.h>
28
29 #include "uncore-frequency-common.h"
30
31 #define UNCORE_MAJOR_VERSION 0
32 #define UNCORE_MINOR_VERSION 2
33 #define UNCORE_ELC_SUPPORTED_VERSION 2
34 #define UNCORE_HEADER_INDEX 0
35 #define UNCORE_FABRIC_CLUSTER_OFFSET 8
36
37 /* status + control + adv_ctl1 + adv_ctl2 */
38 #define UNCORE_FABRIC_CLUSTER_SIZE (4 * 8)
39
40 #define UNCORE_STATUS_INDEX 0
41 #define UNCORE_CONTROL_INDEX 8
42
43 #define UNCORE_FREQ_KHZ_MULTIPLIER 100000
44
45 struct tpmi_uncore_struct;
46
47 /* Information for each cluster */
48 struct tpmi_uncore_cluster_info {
49 bool root_domain;
50 bool elc_supported;
51 u8 __iomem *cluster_base;
52 struct uncore_data uncore_data;
53 struct tpmi_uncore_struct *uncore_root;
54 };
55
56 /* Information for each power domain */
57 struct tpmi_uncore_power_domain_info {
58 u8 __iomem *uncore_base;
59 int ufs_header_ver;
60 int cluster_count;
61 struct tpmi_uncore_cluster_info *cluster_infos;
62 };
63
64 /* Information for all power domains in a package */
65 struct tpmi_uncore_struct {
66 int power_domain_count;
67 int max_ratio;
68 int min_ratio;
69 struct tpmi_uncore_power_domain_info *pd_info;
70 struct tpmi_uncore_cluster_info root_cluster;
71 bool write_blocked;
72 };
73
74 /* Bit definitions for STATUS register */
75 #define UNCORE_CURRENT_RATIO_MASK GENMASK_ULL(6, 0)
76
77 /* Bit definitions for CONTROL register */
78 #define UNCORE_MAX_RATIO_MASK GENMASK_ULL(14, 8)
79 #define UNCORE_MIN_RATIO_MASK GENMASK_ULL(21, 15)
80 #define UNCORE_EFF_LAT_CTRL_RATIO_MASK GENMASK_ULL(28, 22)
81 #define UNCORE_EFF_LAT_CTRL_LOW_THRESHOLD_MASK GENMASK_ULL(38, 32)
82 #define UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE BIT(39)
83 #define UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_MASK GENMASK_ULL(46, 40)
84
85 /* Helper function to read MMIO offset for max/min control frequency */
read_control_freq(struct tpmi_uncore_cluster_info * cluster_info,unsigned int * value,enum uncore_index index)86 static void read_control_freq(struct tpmi_uncore_cluster_info *cluster_info,
87 unsigned int *value, enum uncore_index index)
88 {
89 u64 control;
90
91 control = readq(cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
92 if (index == UNCORE_INDEX_MAX_FREQ)
93 *value = FIELD_GET(UNCORE_MAX_RATIO_MASK, control) * UNCORE_FREQ_KHZ_MULTIPLIER;
94 else
95 *value = FIELD_GET(UNCORE_MIN_RATIO_MASK, control) * UNCORE_FREQ_KHZ_MULTIPLIER;
96 }
97
98 /* Helper function to read efficiency latency control values over MMIO */
read_eff_lat_ctrl(struct uncore_data * data,unsigned int * val,enum uncore_index index)99 static int read_eff_lat_ctrl(struct uncore_data *data, unsigned int *val, enum uncore_index index)
100 {
101 struct tpmi_uncore_cluster_info *cluster_info;
102 u64 ctrl;
103
104 cluster_info = container_of(data, struct tpmi_uncore_cluster_info, uncore_data);
105 if (cluster_info->root_domain)
106 return -ENODATA;
107
108 if (!cluster_info->elc_supported)
109 return -EOPNOTSUPP;
110
111 ctrl = readq(cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
112
113 switch (index) {
114 case UNCORE_INDEX_EFF_LAT_CTRL_LOW_THRESHOLD:
115 *val = FIELD_GET(UNCORE_EFF_LAT_CTRL_LOW_THRESHOLD_MASK, ctrl);
116 *val *= 100;
117 *val = DIV_ROUND_UP(*val, FIELD_MAX(UNCORE_EFF_LAT_CTRL_LOW_THRESHOLD_MASK));
118 break;
119
120 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD:
121 *val = FIELD_GET(UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_MASK, ctrl);
122 *val *= 100;
123 *val = DIV_ROUND_UP(*val, FIELD_MAX(UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_MASK));
124 break;
125
126 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE:
127 *val = FIELD_GET(UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE, ctrl);
128 break;
129 case UNCORE_INDEX_EFF_LAT_CTRL_FREQ:
130 *val = FIELD_GET(UNCORE_EFF_LAT_CTRL_RATIO_MASK, ctrl) * UNCORE_FREQ_KHZ_MULTIPLIER;
131 break;
132
133 default:
134 return -EOPNOTSUPP;
135 }
136
137 return 0;
138 }
139
140 #define UNCORE_MAX_RATIO FIELD_MAX(UNCORE_MAX_RATIO_MASK)
141
142 /* Helper for sysfs read for max/min frequencies. Called under mutex locks */
uncore_read_control_freq(struct uncore_data * data,unsigned int * value,enum uncore_index index)143 static int uncore_read_control_freq(struct uncore_data *data, unsigned int *value,
144 enum uncore_index index)
145 {
146 struct tpmi_uncore_cluster_info *cluster_info;
147
148 cluster_info = container_of(data, struct tpmi_uncore_cluster_info, uncore_data);
149
150 if (cluster_info->root_domain) {
151 struct tpmi_uncore_struct *uncore_root = cluster_info->uncore_root;
152 unsigned int min, max, v;
153 int i;
154
155 min = UNCORE_MAX_RATIO * UNCORE_FREQ_KHZ_MULTIPLIER;
156 max = 0;
157
158 /*
159 * Get the max/min by looking at each cluster. Get the lowest
160 * min and highest max.
161 */
162 for (i = 0; i < uncore_root->power_domain_count; ++i) {
163 int j;
164
165 for (j = 0; j < uncore_root->pd_info[i].cluster_count; ++j) {
166 read_control_freq(&uncore_root->pd_info[i].cluster_infos[j],
167 &v, index);
168 if (v < min)
169 min = v;
170 if (v > max)
171 max = v;
172 }
173 }
174
175 if (index == UNCORE_INDEX_MIN_FREQ)
176 *value = min;
177 else
178 *value = max;
179
180 return 0;
181 }
182
183 read_control_freq(cluster_info, value, index);
184
185 return 0;
186 }
187
188 /* Helper function for writing efficiency latency control values over MMIO */
write_eff_lat_ctrl(struct uncore_data * data,unsigned int val,enum uncore_index index)189 static int write_eff_lat_ctrl(struct uncore_data *data, unsigned int val, enum uncore_index index)
190 {
191 struct tpmi_uncore_cluster_info *cluster_info;
192 u64 control;
193
194 cluster_info = container_of(data, struct tpmi_uncore_cluster_info, uncore_data);
195
196 if (cluster_info->root_domain)
197 return -ENODATA;
198
199 if (!cluster_info->elc_supported)
200 return -EOPNOTSUPP;
201
202 switch (index) {
203 case UNCORE_INDEX_EFF_LAT_CTRL_LOW_THRESHOLD:
204 if (val > 100)
205 return -EINVAL;
206 break;
207
208 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD:
209 if (val > 100)
210 return -EINVAL;
211 break;
212
213 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE:
214 if (val > 1)
215 return -EINVAL;
216 break;
217
218 case UNCORE_INDEX_EFF_LAT_CTRL_FREQ:
219 val /= UNCORE_FREQ_KHZ_MULTIPLIER;
220 if (val > FIELD_MAX(UNCORE_EFF_LAT_CTRL_RATIO_MASK))
221 return -EINVAL;
222 break;
223
224 default:
225 return -EOPNOTSUPP;
226 }
227
228 control = readq(cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
229
230 switch (index) {
231 case UNCORE_INDEX_EFF_LAT_CTRL_LOW_THRESHOLD:
232 val *= FIELD_MAX(UNCORE_EFF_LAT_CTRL_LOW_THRESHOLD_MASK);
233 val /= 100;
234 control &= ~UNCORE_EFF_LAT_CTRL_LOW_THRESHOLD_MASK;
235 control |= FIELD_PREP(UNCORE_EFF_LAT_CTRL_LOW_THRESHOLD_MASK, val);
236 break;
237
238 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD:
239 val *= FIELD_MAX(UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_MASK);
240 val /= 100;
241 control &= ~UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_MASK;
242 control |= FIELD_PREP(UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_MASK, val);
243 break;
244
245 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE:
246 control &= ~UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE;
247 control |= FIELD_PREP(UNCORE_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE, val);
248 break;
249
250 case UNCORE_INDEX_EFF_LAT_CTRL_FREQ:
251 control &= ~UNCORE_EFF_LAT_CTRL_RATIO_MASK;
252 control |= FIELD_PREP(UNCORE_EFF_LAT_CTRL_RATIO_MASK, val);
253 break;
254
255 default:
256 break;
257 }
258
259 writeq(control, cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
260
261 return 0;
262 }
263
264 /* Helper function to write MMIO offset for max/min control frequency */
write_control_freq(struct tpmi_uncore_cluster_info * cluster_info,unsigned int input,unsigned int index)265 static void write_control_freq(struct tpmi_uncore_cluster_info *cluster_info, unsigned int input,
266 unsigned int index)
267 {
268 u64 control;
269
270 control = readq(cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
271
272 if (index == UNCORE_INDEX_MAX_FREQ) {
273 control &= ~UNCORE_MAX_RATIO_MASK;
274 control |= FIELD_PREP(UNCORE_MAX_RATIO_MASK, input);
275 } else {
276 control &= ~UNCORE_MIN_RATIO_MASK;
277 control |= FIELD_PREP(UNCORE_MIN_RATIO_MASK, input);
278 }
279
280 writeq(control, (cluster_info->cluster_base + UNCORE_CONTROL_INDEX));
281 }
282
283 /* Helper for sysfs write for max/min frequencies. Called under mutex locks */
uncore_write_control_freq(struct uncore_data * data,unsigned int input,enum uncore_index index)284 static int uncore_write_control_freq(struct uncore_data *data, unsigned int input,
285 enum uncore_index index)
286 {
287 struct tpmi_uncore_cluster_info *cluster_info;
288 struct tpmi_uncore_struct *uncore_root;
289
290 input /= UNCORE_FREQ_KHZ_MULTIPLIER;
291 if (!input || input > UNCORE_MAX_RATIO)
292 return -EINVAL;
293
294 cluster_info = container_of(data, struct tpmi_uncore_cluster_info, uncore_data);
295 uncore_root = cluster_info->uncore_root;
296
297 if (uncore_root->write_blocked)
298 return -EPERM;
299
300 /* Update each cluster in a package */
301 if (cluster_info->root_domain) {
302 struct tpmi_uncore_struct *uncore_root = cluster_info->uncore_root;
303 int i;
304
305 for (i = 0; i < uncore_root->power_domain_count; ++i) {
306 int j;
307
308 for (j = 0; j < uncore_root->pd_info[i].cluster_count; ++j)
309 write_control_freq(&uncore_root->pd_info[i].cluster_infos[j],
310 input, index);
311 }
312
313 if (index == UNCORE_INDEX_MAX_FREQ)
314 uncore_root->max_ratio = input;
315 else
316 uncore_root->min_ratio = input;
317
318 return 0;
319 }
320
321 if (index == UNCORE_INDEX_MAX_FREQ && uncore_root->max_ratio &&
322 uncore_root->max_ratio < input)
323 return -EINVAL;
324
325 if (index == UNCORE_INDEX_MIN_FREQ && uncore_root->min_ratio &&
326 uncore_root->min_ratio > input)
327 return -EINVAL;
328
329 write_control_freq(cluster_info, input, index);
330
331 return 0;
332 }
333
334 /* Helper for sysfs read for the current uncore frequency. Called under mutex locks */
uncore_read_freq(struct uncore_data * data,unsigned int * freq)335 static int uncore_read_freq(struct uncore_data *data, unsigned int *freq)
336 {
337 struct tpmi_uncore_cluster_info *cluster_info;
338 u64 status;
339
340 cluster_info = container_of(data, struct tpmi_uncore_cluster_info, uncore_data);
341 if (cluster_info->root_domain)
342 return -ENODATA;
343
344 status = readq((u8 __iomem *)cluster_info->cluster_base + UNCORE_STATUS_INDEX);
345 *freq = FIELD_GET(UNCORE_CURRENT_RATIO_MASK, status) * UNCORE_FREQ_KHZ_MULTIPLIER;
346
347 return 0;
348 }
349
350 /* Callback for sysfs read for TPMI uncore values. Called under mutex locks. */
uncore_read(struct uncore_data * data,unsigned int * value,enum uncore_index index)351 static int uncore_read(struct uncore_data *data, unsigned int *value, enum uncore_index index)
352 {
353 switch (index) {
354 case UNCORE_INDEX_MIN_FREQ:
355 case UNCORE_INDEX_MAX_FREQ:
356 return uncore_read_control_freq(data, value, index);
357
358 case UNCORE_INDEX_CURRENT_FREQ:
359 return uncore_read_freq(data, value);
360
361 case UNCORE_INDEX_EFF_LAT_CTRL_LOW_THRESHOLD:
362 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD:
363 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE:
364 case UNCORE_INDEX_EFF_LAT_CTRL_FREQ:
365 return read_eff_lat_ctrl(data, value, index);
366
367 default:
368 break;
369 }
370
371 return -EOPNOTSUPP;
372 }
373
374 /* Callback for sysfs write for TPMI uncore data. Called under mutex locks. */
uncore_write(struct uncore_data * data,unsigned int value,enum uncore_index index)375 static int uncore_write(struct uncore_data *data, unsigned int value, enum uncore_index index)
376 {
377 switch (index) {
378 case UNCORE_INDEX_EFF_LAT_CTRL_LOW_THRESHOLD:
379 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD:
380 case UNCORE_INDEX_EFF_LAT_CTRL_HIGH_THRESHOLD_ENABLE:
381 case UNCORE_INDEX_EFF_LAT_CTRL_FREQ:
382 return write_eff_lat_ctrl(data, value, index);
383
384 case UNCORE_INDEX_MIN_FREQ:
385 case UNCORE_INDEX_MAX_FREQ:
386 return uncore_write_control_freq(data, value, index);
387
388 default:
389 break;
390 }
391
392 return -EOPNOTSUPP;
393 }
394
remove_cluster_entries(struct tpmi_uncore_struct * tpmi_uncore)395 static void remove_cluster_entries(struct tpmi_uncore_struct *tpmi_uncore)
396 {
397 int i;
398
399 for (i = 0; i < tpmi_uncore->power_domain_count; ++i) {
400 struct tpmi_uncore_power_domain_info *pd_info;
401 int j;
402
403 pd_info = &tpmi_uncore->pd_info[i];
404 if (!pd_info->uncore_base)
405 continue;
406
407 for (j = 0; j < pd_info->cluster_count; ++j) {
408 struct tpmi_uncore_cluster_info *cluster_info;
409
410 cluster_info = &pd_info->cluster_infos[j];
411 uncore_freq_remove_die_entry(&cluster_info->uncore_data);
412 }
413 }
414 }
415
416 #define UNCORE_VERSION_MASK GENMASK_ULL(7, 0)
417 #define UNCORE_LOCAL_FABRIC_CLUSTER_ID_MASK GENMASK_ULL(15, 8)
418 #define UNCORE_CLUSTER_OFF_MASK GENMASK_ULL(7, 0)
419 #define UNCORE_MAX_CLUSTER_PER_DOMAIN 8
420
uncore_probe(struct auxiliary_device * auxdev,const struct auxiliary_device_id * id)421 static int uncore_probe(struct auxiliary_device *auxdev, const struct auxiliary_device_id *id)
422 {
423 bool read_blocked = 0, write_blocked = 0;
424 struct intel_tpmi_plat_info *plat_info;
425 struct tpmi_uncore_struct *tpmi_uncore;
426 bool uncore_sysfs_added = false;
427 int ret, i, pkg = 0;
428 int num_resources;
429
430 ret = tpmi_get_feature_status(auxdev, TPMI_ID_UNCORE, &read_blocked, &write_blocked);
431 if (ret)
432 dev_info(&auxdev->dev, "Can't read feature status: ignoring blocked status\n");
433
434 if (read_blocked) {
435 dev_info(&auxdev->dev, "Firmware has blocked reads, exiting\n");
436 return -ENODEV;
437 }
438
439 /* Get number of power domains, which is equal to number of resources */
440 num_resources = tpmi_get_resource_count(auxdev);
441 if (!num_resources)
442 return -EINVAL;
443
444 /* Register callbacks to uncore core */
445 ret = uncore_freq_common_init(uncore_read, uncore_write);
446 if (ret)
447 return ret;
448
449 /* Allocate uncore instance per package */
450 tpmi_uncore = devm_kzalloc(&auxdev->dev, sizeof(*tpmi_uncore), GFP_KERNEL);
451 if (!tpmi_uncore) {
452 ret = -ENOMEM;
453 goto err_rem_common;
454 }
455
456 /* Allocate memory for all power domains in a package */
457 tpmi_uncore->pd_info = devm_kcalloc(&auxdev->dev, num_resources,
458 sizeof(*tpmi_uncore->pd_info),
459 GFP_KERNEL);
460 if (!tpmi_uncore->pd_info) {
461 ret = -ENOMEM;
462 goto err_rem_common;
463 }
464
465 tpmi_uncore->power_domain_count = num_resources;
466 tpmi_uncore->write_blocked = write_blocked;
467
468 /* Get the package ID from the TPMI core */
469 plat_info = tpmi_get_platform_data(auxdev);
470 if (plat_info)
471 pkg = plat_info->package_id;
472 else
473 dev_info(&auxdev->dev, "Platform information is NULL\n");
474
475 for (i = 0; i < num_resources; ++i) {
476 struct tpmi_uncore_power_domain_info *pd_info;
477 struct resource *res;
478 u64 cluster_offset;
479 u8 cluster_mask;
480 int mask, j;
481 u64 header;
482
483 res = tpmi_get_resource_at_index(auxdev, i);
484 if (!res)
485 continue;
486
487 pd_info = &tpmi_uncore->pd_info[i];
488
489 pd_info->uncore_base = devm_ioremap_resource(&auxdev->dev, res);
490 if (IS_ERR(pd_info->uncore_base)) {
491 ret = PTR_ERR(pd_info->uncore_base);
492 /*
493 * Set to NULL so that clean up can still remove other
494 * entries already created if any by
495 * remove_cluster_entries()
496 */
497 pd_info->uncore_base = NULL;
498 goto remove_clusters;
499 }
500
501 /* Check for version and skip this resource if there is mismatch */
502 header = readq(pd_info->uncore_base);
503 pd_info->ufs_header_ver = header & UNCORE_VERSION_MASK;
504
505 if (pd_info->ufs_header_ver == TPMI_VERSION_INVALID)
506 continue;
507
508 if (TPMI_MAJOR_VERSION(pd_info->ufs_header_ver) != UNCORE_MAJOR_VERSION) {
509 dev_err(&auxdev->dev, "Uncore: Unsupported major version:%lx\n",
510 TPMI_MAJOR_VERSION(pd_info->ufs_header_ver));
511 ret = -ENODEV;
512 goto remove_clusters;
513 }
514
515 if (TPMI_MINOR_VERSION(pd_info->ufs_header_ver) > UNCORE_MINOR_VERSION)
516 dev_info(&auxdev->dev, "Uncore: Ignore: Unsupported minor version:%lx\n",
517 TPMI_MINOR_VERSION(pd_info->ufs_header_ver));
518
519 /* Get Cluster ID Mask */
520 cluster_mask = FIELD_GET(UNCORE_LOCAL_FABRIC_CLUSTER_ID_MASK, header);
521 if (!cluster_mask) {
522 dev_info(&auxdev->dev, "Uncore: Invalid cluster mask:%x\n", cluster_mask);
523 continue;
524 }
525
526 /* Find out number of clusters in this resource */
527 pd_info->cluster_count = hweight8(cluster_mask);
528
529 pd_info->cluster_infos = devm_kcalloc(&auxdev->dev, pd_info->cluster_count,
530 sizeof(struct tpmi_uncore_cluster_info),
531 GFP_KERNEL);
532 if (!pd_info->cluster_infos) {
533 ret = -ENOMEM;
534 goto remove_clusters;
535 }
536 /*
537 * Each byte in the register point to status and control
538 * registers belonging to cluster id 0-8.
539 */
540 cluster_offset = readq(pd_info->uncore_base +
541 UNCORE_FABRIC_CLUSTER_OFFSET);
542
543 for (j = 0; j < pd_info->cluster_count; ++j) {
544 struct tpmi_uncore_cluster_info *cluster_info;
545
546 /* Get the offset for this cluster */
547 mask = (cluster_offset & UNCORE_CLUSTER_OFF_MASK);
548 /* Offset in QWORD, so change to bytes */
549 mask <<= 3;
550
551 cluster_info = &pd_info->cluster_infos[j];
552
553 cluster_info->cluster_base = pd_info->uncore_base + mask;
554
555 cluster_info->uncore_data.package_id = pkg;
556 /* There are no dies like Cascade Lake */
557 cluster_info->uncore_data.die_id = 0;
558 cluster_info->uncore_data.domain_id = i;
559 cluster_info->uncore_data.cluster_id = j;
560
561 cluster_info->uncore_root = tpmi_uncore;
562
563 if (TPMI_MINOR_VERSION(pd_info->ufs_header_ver) >= UNCORE_ELC_SUPPORTED_VERSION)
564 cluster_info->elc_supported = true;
565
566 ret = uncore_freq_add_entry(&cluster_info->uncore_data, 0);
567 if (ret) {
568 cluster_info->cluster_base = NULL;
569 goto remove_clusters;
570 }
571 /* Point to next cluster offset */
572 cluster_offset >>= UNCORE_MAX_CLUSTER_PER_DOMAIN;
573 uncore_sysfs_added = true;
574 }
575 }
576
577 if (!uncore_sysfs_added) {
578 ret = -ENODEV;
579 goto remove_clusters;
580 }
581
582 auxiliary_set_drvdata(auxdev, tpmi_uncore);
583
584 if (topology_max_dies_per_package() > 1)
585 return 0;
586
587 tpmi_uncore->root_cluster.root_domain = true;
588 tpmi_uncore->root_cluster.uncore_root = tpmi_uncore;
589
590 tpmi_uncore->root_cluster.uncore_data.package_id = pkg;
591 tpmi_uncore->root_cluster.uncore_data.domain_id = UNCORE_DOMAIN_ID_INVALID;
592 ret = uncore_freq_add_entry(&tpmi_uncore->root_cluster.uncore_data, 0);
593 if (ret)
594 goto remove_clusters;
595
596 return 0;
597
598 remove_clusters:
599 remove_cluster_entries(tpmi_uncore);
600 err_rem_common:
601 uncore_freq_common_exit();
602
603 return ret;
604 }
605
uncore_remove(struct auxiliary_device * auxdev)606 static void uncore_remove(struct auxiliary_device *auxdev)
607 {
608 struct tpmi_uncore_struct *tpmi_uncore = auxiliary_get_drvdata(auxdev);
609
610 if (tpmi_uncore->root_cluster.root_domain)
611 uncore_freq_remove_die_entry(&tpmi_uncore->root_cluster.uncore_data);
612
613 remove_cluster_entries(tpmi_uncore);
614
615 uncore_freq_common_exit();
616 }
617
618 static const struct auxiliary_device_id intel_uncore_id_table[] = {
619 { .name = "intel_vsec.tpmi-uncore" },
620 {}
621 };
622 MODULE_DEVICE_TABLE(auxiliary, intel_uncore_id_table);
623
624 static struct auxiliary_driver intel_uncore_aux_driver = {
625 .id_table = intel_uncore_id_table,
626 .remove = uncore_remove,
627 .probe = uncore_probe,
628 };
629
630 module_auxiliary_driver(intel_uncore_aux_driver);
631
632 MODULE_IMPORT_NS("INTEL_TPMI");
633 MODULE_IMPORT_NS("INTEL_UNCORE_FREQUENCY");
634 MODULE_DESCRIPTION("Intel TPMI UFS Driver");
635 MODULE_LICENSE("GPL");
636