1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * AMD Platform Management Framework Driver - TEE Interface
4 *
5 * Copyright (c) 2023, Advanced Micro Devices, Inc.
6 * All Rights Reserved.
7 *
8 * Author: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
9 */
10
11 #include <linux/debugfs.h>
12 #include <linux/tee_drv.h>
13 #include <linux/uuid.h>
14 #include "pmf.h"
15
16 #define MAX_TEE_PARAM 4
17
18 /* Policy binary actions sampling frequency (in ms) */
19 static int pb_actions_ms = MSEC_PER_SEC;
20 /* Sideload policy binaries to debug policy failures */
21 static bool pb_side_load;
22
23 #ifdef CONFIG_AMD_PMF_DEBUG
24 module_param(pb_actions_ms, int, 0644);
25 MODULE_PARM_DESC(pb_actions_ms, "Policy binary actions sampling frequency (default = 1000ms)");
26 module_param(pb_side_load, bool, 0444);
27 MODULE_PARM_DESC(pb_side_load, "Sideload policy binaries debug policy failures");
28 #endif
29
30 static const uuid_t amd_pmf_ta_uuid[] = { UUID_INIT(0xd9b39bf2, 0x66bd, 0x4154, 0xaf, 0xb8, 0x8a,
31 0xcc, 0x2b, 0x2b, 0x60, 0xd6),
32 UUID_INIT(0x6fd93b77, 0x3fb8, 0x524d, 0xb1, 0x2d, 0xc5,
33 0x29, 0xb1, 0x3d, 0x85, 0x43),
34 };
35
amd_pmf_uevent_as_str(unsigned int state)36 static const char *amd_pmf_uevent_as_str(unsigned int state)
37 {
38 switch (state) {
39 case SYSTEM_STATE_S0i3:
40 return "S0i3";
41 case SYSTEM_STATE_S4:
42 return "S4";
43 case SYSTEM_STATE_SCREEN_LOCK:
44 return "SCREEN_LOCK";
45 default:
46 return "Unknown Smart PC event";
47 }
48 }
49
amd_pmf_prepare_args(struct amd_pmf_dev * dev,int cmd,struct tee_ioctl_invoke_arg * arg,struct tee_param * param)50 static void amd_pmf_prepare_args(struct amd_pmf_dev *dev, int cmd,
51 struct tee_ioctl_invoke_arg *arg,
52 struct tee_param *param)
53 {
54 memset(arg, 0, sizeof(*arg));
55 memset(param, 0, MAX_TEE_PARAM * sizeof(*param));
56
57 arg->func = cmd;
58 arg->session = dev->session_id;
59 arg->num_params = MAX_TEE_PARAM;
60
61 /* Fill invoke cmd params */
62 param[0].u.memref.size = sizeof(struct ta_pmf_shared_memory);
63 param[0].attr = TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT;
64 param[0].u.memref.shm = dev->fw_shm_pool;
65 param[0].u.memref.shm_offs = 0;
66 }
67
amd_pmf_update_uevents(struct amd_pmf_dev * dev,u16 event)68 static void amd_pmf_update_uevents(struct amd_pmf_dev *dev, u16 event)
69 {
70 input_report_key(dev->pmf_idev, event, 1); /* key press */
71 input_sync(dev->pmf_idev);
72 input_report_key(dev->pmf_idev, event, 0); /* key release */
73 input_sync(dev->pmf_idev);
74 }
75
amd_pmf_apply_policies(struct amd_pmf_dev * dev,struct ta_pmf_enact_result * out)76 static void amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_result *out)
77 {
78 u32 val;
79 int idx;
80
81 for (idx = 0; idx < out->actions_count; idx++) {
82 val = out->actions_list[idx].value;
83 switch (out->actions_list[idx].action_index) {
84 case PMF_POLICY_SPL:
85 if (dev->prev_data->spl != val) {
86 amd_pmf_send_cmd(dev, SET_SPL, false, val, NULL);
87 dev_dbg(dev->dev, "update SPL: %u\n", val);
88 dev->prev_data->spl = val;
89 }
90 break;
91
92 case PMF_POLICY_SPPT:
93 if (dev->prev_data->sppt != val) {
94 amd_pmf_send_cmd(dev, SET_SPPT, false, val, NULL);
95 dev_dbg(dev->dev, "update SPPT: %u\n", val);
96 dev->prev_data->sppt = val;
97 }
98 break;
99
100 case PMF_POLICY_FPPT:
101 if (dev->prev_data->fppt != val) {
102 amd_pmf_send_cmd(dev, SET_FPPT, false, val, NULL);
103 dev_dbg(dev->dev, "update FPPT: %u\n", val);
104 dev->prev_data->fppt = val;
105 }
106 break;
107
108 case PMF_POLICY_SPPT_APU_ONLY:
109 if (dev->prev_data->sppt_apuonly != val) {
110 amd_pmf_send_cmd(dev, SET_SPPT_APU_ONLY, false, val, NULL);
111 dev_dbg(dev->dev, "update SPPT_APU_ONLY: %u\n", val);
112 dev->prev_data->sppt_apuonly = val;
113 }
114 break;
115
116 case PMF_POLICY_STT_MIN:
117 if (dev->prev_data->stt_minlimit != val) {
118 amd_pmf_send_cmd(dev, SET_STT_MIN_LIMIT, false, val, NULL);
119 dev_dbg(dev->dev, "update STT_MIN: %u\n", val);
120 dev->prev_data->stt_minlimit = val;
121 }
122 break;
123
124 case PMF_POLICY_STT_SKINTEMP_APU:
125 if (dev->prev_data->stt_skintemp_apu != val) {
126 amd_pmf_send_cmd(dev, SET_STT_LIMIT_APU, false,
127 fixp_q88_fromint(val), NULL);
128 dev_dbg(dev->dev, "update STT_SKINTEMP_APU: %u\n", val);
129 dev->prev_data->stt_skintemp_apu = val;
130 }
131 break;
132
133 case PMF_POLICY_STT_SKINTEMP_HS2:
134 if (dev->prev_data->stt_skintemp_hs2 != val) {
135 amd_pmf_send_cmd(dev, SET_STT_LIMIT_HS2, false,
136 fixp_q88_fromint(val), NULL);
137 dev_dbg(dev->dev, "update STT_SKINTEMP_HS2: %u\n", val);
138 dev->prev_data->stt_skintemp_hs2 = val;
139 }
140 break;
141
142 case PMF_POLICY_P3T:
143 if (dev->prev_data->p3t_limit != val) {
144 amd_pmf_send_cmd(dev, SET_P3T, false, val, NULL);
145 dev_dbg(dev->dev, "update P3T: %u\n", val);
146 dev->prev_data->p3t_limit = val;
147 }
148 break;
149
150 case PMF_POLICY_SYSTEM_STATE:
151 switch (val) {
152 case 0:
153 amd_pmf_update_uevents(dev, KEY_SLEEP);
154 break;
155 case 1:
156 amd_pmf_update_uevents(dev, KEY_SUSPEND);
157 break;
158 case 2:
159 amd_pmf_update_uevents(dev, KEY_SCREENLOCK);
160 break;
161 default:
162 dev_err(dev->dev, "Invalid PMF policy system state: %d\n", val);
163 }
164
165 dev_dbg(dev->dev, "update SYSTEM_STATE: %s\n",
166 amd_pmf_uevent_as_str(val));
167 break;
168
169 case PMF_POLICY_BIOS_OUTPUT_1:
170 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(0), 0);
171 break;
172
173 case PMF_POLICY_BIOS_OUTPUT_2:
174 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(1), 1);
175 break;
176
177 case PMF_POLICY_BIOS_OUTPUT_3:
178 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(2), 2);
179 break;
180
181 case PMF_POLICY_BIOS_OUTPUT_4:
182 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(3), 3);
183 break;
184
185 case PMF_POLICY_BIOS_OUTPUT_5:
186 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(4), 4);
187 break;
188
189 case PMF_POLICY_BIOS_OUTPUT_6:
190 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(5), 5);
191 break;
192
193 case PMF_POLICY_BIOS_OUTPUT_7:
194 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(6), 6);
195 break;
196
197 case PMF_POLICY_BIOS_OUTPUT_8:
198 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(7), 7);
199 break;
200
201 case PMF_POLICY_BIOS_OUTPUT_9:
202 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(8), 8);
203 break;
204
205 case PMF_POLICY_BIOS_OUTPUT_10:
206 amd_pmf_smartpc_apply_bios_output(dev, val, BIT(9), 9);
207 break;
208 }
209 }
210 }
211
amd_pmf_invoke_cmd_enact(struct amd_pmf_dev * dev)212 static int amd_pmf_invoke_cmd_enact(struct amd_pmf_dev *dev)
213 {
214 struct ta_pmf_shared_memory *ta_sm = NULL;
215 struct ta_pmf_enact_result *out = NULL;
216 struct ta_pmf_enact_table *in = NULL;
217 struct tee_param param[MAX_TEE_PARAM];
218 struct tee_ioctl_invoke_arg arg;
219 int ret = 0;
220
221 if (!dev->tee_ctx)
222 return -ENODEV;
223
224 memset(dev->shbuf, 0, dev->policy_sz);
225 ta_sm = dev->shbuf;
226 out = &ta_sm->pmf_output.policy_apply_table;
227 in = &ta_sm->pmf_input.enact_table;
228
229 memset(ta_sm, 0, sizeof(*ta_sm));
230 ta_sm->command_id = TA_PMF_COMMAND_POLICY_BUILDER_ENACT_POLICIES;
231 ta_sm->if_version = PMF_TA_IF_VERSION_MAJOR;
232
233 amd_pmf_populate_ta_inputs(dev, in);
234 amd_pmf_prepare_args(dev, TA_PMF_COMMAND_POLICY_BUILDER_ENACT_POLICIES, &arg, param);
235
236 ret = tee_client_invoke_func(dev->tee_ctx, &arg, param);
237 if (ret < 0 || arg.ret != 0) {
238 dev_err(dev->dev, "TEE enact cmd failed. err: %x, ret:%d\n", arg.ret, ret);
239 return ret;
240 }
241
242 if (ta_sm->pmf_result == TA_PMF_TYPE_SUCCESS && out->actions_count) {
243 amd_pmf_dump_ta_inputs(dev, in);
244 dev_dbg(dev->dev, "action count:%u result:%x\n", out->actions_count,
245 ta_sm->pmf_result);
246 amd_pmf_apply_policies(dev, out);
247 }
248
249 return 0;
250 }
251
amd_pmf_invoke_cmd_init(struct amd_pmf_dev * dev)252 static int amd_pmf_invoke_cmd_init(struct amd_pmf_dev *dev)
253 {
254 struct ta_pmf_shared_memory *ta_sm = NULL;
255 struct tee_param param[MAX_TEE_PARAM];
256 struct ta_pmf_init_table *in = NULL;
257 struct tee_ioctl_invoke_arg arg;
258 int ret = 0;
259
260 if (!dev->tee_ctx) {
261 dev_err(dev->dev, "Failed to get TEE context\n");
262 return -ENODEV;
263 }
264
265 dev_dbg(dev->dev, "Policy Binary size: %llu bytes\n", (unsigned long long)dev->policy_sz);
266 memset(dev->shbuf, 0, dev->policy_sz);
267 ta_sm = dev->shbuf;
268 in = &ta_sm->pmf_input.init_table;
269
270 ta_sm->command_id = TA_PMF_COMMAND_POLICY_BUILDER_INITIALIZE;
271 ta_sm->if_version = PMF_TA_IF_VERSION_MAJOR;
272
273 in->metadata_macrocheck = false;
274 in->sku_check = false;
275 in->validate = true;
276 in->frequency = pb_actions_ms;
277 in->policies_table.table_size = dev->policy_sz;
278
279 memcpy(in->policies_table.table, dev->policy_buf, dev->policy_sz);
280 amd_pmf_prepare_args(dev, TA_PMF_COMMAND_POLICY_BUILDER_INITIALIZE, &arg, param);
281
282 ret = tee_client_invoke_func(dev->tee_ctx, &arg, param);
283 if (ret < 0 || arg.ret != 0) {
284 dev_err(dev->dev, "Failed to invoke TEE init cmd. err: %x, ret:%d\n", arg.ret, ret);
285 return ret;
286 }
287
288 return ta_sm->pmf_result;
289 }
290
amd_pmf_invoke_cmd(struct work_struct * work)291 static void amd_pmf_invoke_cmd(struct work_struct *work)
292 {
293 struct amd_pmf_dev *dev = container_of(work, struct amd_pmf_dev, pb_work.work);
294
295 amd_pmf_invoke_cmd_enact(dev);
296 schedule_delayed_work(&dev->pb_work, msecs_to_jiffies(pb_actions_ms));
297 }
298
amd_pmf_start_policy_engine(struct amd_pmf_dev * dev)299 static int amd_pmf_start_policy_engine(struct amd_pmf_dev *dev)
300 {
301 struct cookie_header *header;
302 int res;
303
304 if (dev->policy_sz < POLICY_COOKIE_OFFSET + sizeof(*header))
305 return -EINVAL;
306
307 header = (struct cookie_header *)(dev->policy_buf + POLICY_COOKIE_OFFSET);
308
309 if (header->sign != POLICY_SIGN_COOKIE || !header->length) {
310 dev_dbg(dev->dev, "cookie doesn't match\n");
311 return -EINVAL;
312 }
313
314 if (dev->policy_sz < header->length + 512)
315 return -EINVAL;
316
317 /* Update the actual length */
318 dev->policy_sz = header->length + 512;
319 res = amd_pmf_invoke_cmd_init(dev);
320 if (res == TA_PMF_TYPE_SUCCESS) {
321 /* Now its safe to announce that smart pc is enabled */
322 dev->smart_pc_enabled = true;
323 /*
324 * Start collecting the data from TA FW after a small delay
325 * or else, we might end up getting stale values.
326 */
327 schedule_delayed_work(&dev->pb_work, msecs_to_jiffies(pb_actions_ms * 3));
328 } else {
329 dev_dbg(dev->dev, "ta invoke cmd init failed err: %x\n", res);
330 dev->smart_pc_enabled = false;
331 return res;
332 }
333
334 return 0;
335 }
336
amd_pmf_pb_valid(struct amd_pmf_dev * dev)337 static inline bool amd_pmf_pb_valid(struct amd_pmf_dev *dev)
338 {
339 return memchr_inv(dev->policy_buf, 0xff, dev->policy_sz);
340 }
341
342 #ifdef CONFIG_AMD_PMF_DEBUG
amd_pmf_hex_dump_pb(struct amd_pmf_dev * dev)343 static void amd_pmf_hex_dump_pb(struct amd_pmf_dev *dev)
344 {
345 print_hex_dump_debug("(pb): ", DUMP_PREFIX_OFFSET, 16, 1, dev->policy_buf,
346 dev->policy_sz, false);
347 }
348
amd_pmf_get_pb_data(struct file * filp,const char __user * buf,size_t length,loff_t * pos)349 static ssize_t amd_pmf_get_pb_data(struct file *filp, const char __user *buf,
350 size_t length, loff_t *pos)
351 {
352 struct amd_pmf_dev *dev = filp->private_data;
353 unsigned char *new_policy_buf;
354 int ret;
355
356 /* Policy binary size cannot exceed POLICY_BUF_MAX_SZ */
357 if (length > POLICY_BUF_MAX_SZ || length == 0)
358 return -EINVAL;
359
360 /* re-alloc to the new buffer length of the policy binary */
361 new_policy_buf = memdup_user(buf, length);
362 if (IS_ERR(new_policy_buf))
363 return PTR_ERR(new_policy_buf);
364
365 kfree(dev->policy_buf);
366 dev->policy_buf = new_policy_buf;
367 dev->policy_sz = length;
368
369 if (!amd_pmf_pb_valid(dev)) {
370 ret = -EINVAL;
371 goto cleanup;
372 }
373
374 amd_pmf_hex_dump_pb(dev);
375 ret = amd_pmf_start_policy_engine(dev);
376 if (ret < 0)
377 goto cleanup;
378
379 return length;
380
381 cleanup:
382 kfree(dev->policy_buf);
383 dev->policy_buf = NULL;
384 return ret;
385 }
386
387 static const struct file_operations pb_fops = {
388 .write = amd_pmf_get_pb_data,
389 .open = simple_open,
390 };
391
amd_pmf_open_pb(struct amd_pmf_dev * dev,struct dentry * debugfs_root)392 static void amd_pmf_open_pb(struct amd_pmf_dev *dev, struct dentry *debugfs_root)
393 {
394 dev->esbin = debugfs_create_dir("pb", debugfs_root);
395 debugfs_create_file("update_policy", 0644, dev->esbin, dev, &pb_fops);
396 }
397
amd_pmf_remove_pb(struct amd_pmf_dev * dev)398 static void amd_pmf_remove_pb(struct amd_pmf_dev *dev)
399 {
400 debugfs_remove_recursive(dev->esbin);
401 }
402 #else
amd_pmf_open_pb(struct amd_pmf_dev * dev,struct dentry * debugfs_root)403 static void amd_pmf_open_pb(struct amd_pmf_dev *dev, struct dentry *debugfs_root) {}
amd_pmf_remove_pb(struct amd_pmf_dev * dev)404 static void amd_pmf_remove_pb(struct amd_pmf_dev *dev) {}
amd_pmf_hex_dump_pb(struct amd_pmf_dev * dev)405 static void amd_pmf_hex_dump_pb(struct amd_pmf_dev *dev) {}
406 #endif
407
amd_pmf_amdtee_ta_match(struct tee_ioctl_version_data * ver,const void * data)408 static int amd_pmf_amdtee_ta_match(struct tee_ioctl_version_data *ver, const void *data)
409 {
410 return ver->impl_id == TEE_IMPL_ID_AMDTEE;
411 }
412
amd_pmf_ta_open_session(struct tee_context * ctx,u32 * id,const uuid_t * uuid)413 static int amd_pmf_ta_open_session(struct tee_context *ctx, u32 *id, const uuid_t *uuid)
414 {
415 struct tee_ioctl_open_session_arg sess_arg = {};
416 int rc;
417
418 export_uuid(sess_arg.uuid, uuid);
419 sess_arg.clnt_login = TEE_IOCTL_LOGIN_PUBLIC;
420 sess_arg.num_params = 0;
421
422 rc = tee_client_open_session(ctx, &sess_arg, NULL);
423 if (rc < 0 || sess_arg.ret != 0) {
424 pr_err("Failed to open TEE session err:%#x, rc:%d\n", sess_arg.ret, rc);
425 return rc;
426 }
427
428 *id = sess_arg.session;
429
430 return rc;
431 }
432
amd_pmf_register_input_device(struct amd_pmf_dev * dev)433 static int amd_pmf_register_input_device(struct amd_pmf_dev *dev)
434 {
435 int err;
436
437 dev->pmf_idev = devm_input_allocate_device(dev->dev);
438 if (!dev->pmf_idev)
439 return -ENOMEM;
440
441 dev->pmf_idev->name = "PMF-TA output events";
442 dev->pmf_idev->phys = "amd-pmf/input0";
443
444 input_set_capability(dev->pmf_idev, EV_KEY, KEY_SLEEP);
445 input_set_capability(dev->pmf_idev, EV_KEY, KEY_SCREENLOCK);
446 input_set_capability(dev->pmf_idev, EV_KEY, KEY_SUSPEND);
447
448 err = input_register_device(dev->pmf_idev);
449 if (err) {
450 dev_err(dev->dev, "Failed to register input device: %d\n", err);
451 return err;
452 }
453
454 return 0;
455 }
456
amd_pmf_tee_init(struct amd_pmf_dev * dev,const uuid_t * uuid)457 static int amd_pmf_tee_init(struct amd_pmf_dev *dev, const uuid_t *uuid)
458 {
459 u32 size;
460 int ret;
461
462 dev->tee_ctx = tee_client_open_context(NULL, amd_pmf_amdtee_ta_match, NULL, NULL);
463 if (IS_ERR(dev->tee_ctx)) {
464 dev_err(dev->dev, "Failed to open TEE context\n");
465 return PTR_ERR(dev->tee_ctx);
466 }
467
468 ret = amd_pmf_ta_open_session(dev->tee_ctx, &dev->session_id, uuid);
469 if (ret) {
470 dev_err(dev->dev, "Failed to open TA session (%d)\n", ret);
471 ret = -EINVAL;
472 goto out_ctx;
473 }
474
475 size = sizeof(struct ta_pmf_shared_memory) + dev->policy_sz;
476 dev->fw_shm_pool = tee_shm_alloc_kernel_buf(dev->tee_ctx, size);
477 if (IS_ERR(dev->fw_shm_pool)) {
478 dev_err(dev->dev, "Failed to alloc TEE shared memory\n");
479 ret = PTR_ERR(dev->fw_shm_pool);
480 goto out_sess;
481 }
482
483 dev->shbuf = tee_shm_get_va(dev->fw_shm_pool, 0);
484 if (IS_ERR(dev->shbuf)) {
485 dev_err(dev->dev, "Failed to get TEE virtual address\n");
486 ret = PTR_ERR(dev->shbuf);
487 goto out_shm;
488 }
489 dev_dbg(dev->dev, "TEE init done\n");
490
491 return 0;
492
493 out_shm:
494 tee_shm_free(dev->fw_shm_pool);
495 out_sess:
496 tee_client_close_session(dev->tee_ctx, dev->session_id);
497 out_ctx:
498 tee_client_close_context(dev->tee_ctx);
499
500 return ret;
501 }
502
amd_pmf_tee_deinit(struct amd_pmf_dev * dev)503 static void amd_pmf_tee_deinit(struct amd_pmf_dev *dev)
504 {
505 tee_shm_free(dev->fw_shm_pool);
506 tee_client_close_session(dev->tee_ctx, dev->session_id);
507 tee_client_close_context(dev->tee_ctx);
508 }
509
amd_pmf_init_smart_pc(struct amd_pmf_dev * dev)510 int amd_pmf_init_smart_pc(struct amd_pmf_dev *dev)
511 {
512 bool status;
513 int ret, i;
514
515 ret = apmf_check_smart_pc(dev);
516 if (ret) {
517 /*
518 * Lets not return from here if Smart PC bit is not advertised in
519 * the BIOS. This way, there will be some amount of power savings
520 * to the user with static slider (if enabled).
521 */
522 dev_info(dev->dev, "PMF Smart PC not advertised in BIOS!:%d\n", ret);
523 return -ENODEV;
524 }
525
526 INIT_DELAYED_WORK(&dev->pb_work, amd_pmf_invoke_cmd);
527
528 ret = amd_pmf_set_dram_addr(dev, true);
529 if (ret)
530 goto err_cancel_work;
531
532 dev->policy_base = devm_ioremap_resource(dev->dev, dev->res);
533 if (IS_ERR(dev->policy_base)) {
534 ret = PTR_ERR(dev->policy_base);
535 goto err_free_dram_buf;
536 }
537
538 dev->policy_buf = kzalloc(dev->policy_sz, GFP_KERNEL);
539 if (!dev->policy_buf) {
540 ret = -ENOMEM;
541 goto err_free_dram_buf;
542 }
543
544 memcpy_fromio(dev->policy_buf, dev->policy_base, dev->policy_sz);
545
546 if (!amd_pmf_pb_valid(dev)) {
547 dev_info(dev->dev, "No Smart PC policy present\n");
548 ret = -EINVAL;
549 goto err_free_policy;
550 }
551
552 amd_pmf_hex_dump_pb(dev);
553
554 dev->prev_data = kzalloc(sizeof(*dev->prev_data), GFP_KERNEL);
555 if (!dev->prev_data) {
556 ret = -ENOMEM;
557 goto err_free_policy;
558 }
559
560 for (i = 0; i < ARRAY_SIZE(amd_pmf_ta_uuid); i++) {
561 ret = amd_pmf_tee_init(dev, &amd_pmf_ta_uuid[i]);
562 if (ret)
563 goto err_free_prev_data;
564
565 ret = amd_pmf_start_policy_engine(dev);
566 switch (ret) {
567 case TA_PMF_TYPE_SUCCESS:
568 status = true;
569 break;
570 case TA_ERROR_CRYPTO_INVALID_PARAM:
571 case TA_ERROR_CRYPTO_BIN_TOO_LARGE:
572 amd_pmf_tee_deinit(dev);
573 status = false;
574 break;
575 default:
576 ret = -EINVAL;
577 amd_pmf_tee_deinit(dev);
578 goto err_free_prev_data;
579 }
580
581 if (status)
582 break;
583 }
584
585 if (!status && !pb_side_load) {
586 ret = -EINVAL;
587 goto err_free_prev_data;
588 }
589
590 if (pb_side_load)
591 amd_pmf_open_pb(dev, dev->dbgfs_dir);
592
593 ret = amd_pmf_register_input_device(dev);
594 if (ret)
595 goto err_pmf_remove_pb;
596
597 return 0;
598
599 err_pmf_remove_pb:
600 if (pb_side_load && dev->esbin)
601 amd_pmf_remove_pb(dev);
602 amd_pmf_tee_deinit(dev);
603 err_free_prev_data:
604 kfree(dev->prev_data);
605 err_free_policy:
606 kfree(dev->policy_buf);
607 err_free_dram_buf:
608 kfree(dev->buf);
609 err_cancel_work:
610 cancel_delayed_work_sync(&dev->pb_work);
611
612 return ret;
613 }
614
amd_pmf_deinit_smart_pc(struct amd_pmf_dev * dev)615 void amd_pmf_deinit_smart_pc(struct amd_pmf_dev *dev)
616 {
617 if (dev->pmf_idev)
618 input_unregister_device(dev->pmf_idev);
619
620 if (pb_side_load && dev->esbin)
621 amd_pmf_remove_pb(dev);
622
623 cancel_delayed_work_sync(&dev->pb_work);
624 kfree(dev->prev_data);
625 dev->prev_data = NULL;
626 kfree(dev->policy_buf);
627 dev->policy_buf = NULL;
628 kfree(dev->buf);
629 dev->buf = NULL;
630 amd_pmf_tee_deinit(dev);
631 }
632