summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ath/ath10k/testmode.c
blob: 1bffe3fbea3f3e2b805764852e028e540839b9ad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
// SPDX-License-Identifier: ISC
/*
 * Copyright (c) 2014-2017 Qualcomm Atheros, Inc.
 */

#include "testmode.h"

#include <net/netlink.h>
#include <linux/firmware.h>

#include "debug.h"
#include "wmi.h"
#include "hif.h"
#include "hw.h"
#include "core.h"

#include "testmode_i.h"

static const struct nla_policy ath10k_tm_policy[ATH10K_TM_ATTR_MAX + 1] = {
	[ATH10K_TM_ATTR_CMD]		= { .type = NLA_U32 },
	[ATH10K_TM_ATTR_DATA]		= { .type = NLA_BINARY,
					    .len = ATH10K_TM_DATA_MAX_LEN },
	[ATH10K_TM_ATTR_WMI_CMDID]	= { .type = NLA_U32 },
	[ATH10K_TM_ATTR_VERSION_MAJOR]	= { .type = NLA_U32 },
	[ATH10K_TM_ATTR_VERSION_MINOR]	= { .type = NLA_U32 },
};

/* Returns true if callee consumes the skb and the skb should be discarded.
 * Returns false if skb is not used. Does not sleep.
 */
bool ath10k_tm_event_wmi(struct ath10k *ar, u32 cmd_id, struct sk_buff *skb)
{
	struct sk_buff *nl_skb;
	bool consumed;
	int ret;

	ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
		   "testmode event wmi cmd_id %d skb %pK skb->len %d\n",
		   cmd_id, skb, skb->len);

	ath10k_dbg_dump(ar, ATH10K_DBG_TESTMODE, NULL, "", skb->data, skb->len);

	spin_lock_bh(&ar->data_lock);

	if (!ar->testmode.utf_monitor) {
		consumed = false;
		goto out;
	}

	/* Only testmode.c should be handling events from utf firmware,
	 * otherwise all sort of problems will arise as mac80211 operations
	 * are not initialised.
	 */
	consumed = true;

	nl_skb = cfg80211_testmode_alloc_event_skb(ar->hw->wiphy,
						   2 * sizeof(u32) + skb->len,
						   GFP_ATOMIC);
	if (!nl_skb) {
		ath10k_warn(ar,
			    "failed to allocate skb for testmode wmi event\n");
		goto out;
	}

	ret = nla_put_u32(nl_skb, ATH10K_TM_ATTR_CMD, ATH10K_TM_CMD_WMI);
	if (ret) {
		ath10k_warn(ar,
			    "failed to to put testmode wmi event cmd attribute: %d\n",
			    ret);
		kfree_skb(nl_skb);
		goto out;
	}

	ret = nla_put_u32(nl_skb, ATH10K_TM_ATTR_WMI_CMDID, cmd_id);
	if (ret) {
		ath10k_warn(ar,
			    "failed to to put testmode wmi even cmd_id: %d\n",
			    ret);
		kfree_skb(nl_skb);
		goto out;
	}

	ret = nla_put(nl_skb, ATH10K_TM_ATTR_DATA, skb->len, skb->data);
	if (ret) {
		ath10k_warn(ar,
			    "failed to copy skb to testmode wmi event: %d\n",
			    ret);
		kfree_skb(nl_skb);
		goto out;
	}

	cfg80211_testmode_event(nl_skb, GFP_ATOMIC);

out:
	spin_unlock_bh(&ar->data_lock);

	return consumed;
}

static int ath10k_tm_cmd_get_version(struct ath10k *ar, struct nlattr *tb[])
{
	struct sk_buff *skb;
	int ret;

	ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
		   "testmode cmd get version_major %d version_minor %d\n",
		   ATH10K_TESTMODE_VERSION_MAJOR,
		   ATH10K_TESTMODE_VERSION_MINOR);

	skb = cfg80211_testmode_alloc_reply_skb(ar->hw->wiphy,
						nla_total_size(sizeof(u32)));
	if (!skb)
		return -ENOMEM;

	ret = nla_put_u32(skb, ATH10K_TM_ATTR_VERSION_MAJOR,
			  ATH10K_TESTMODE_VERSION_MAJOR);
	if (ret) {
		kfree_skb(skb);
		return ret;
	}

	ret = nla_put_u32(skb, ATH10K_TM_ATTR_VERSION_MINOR,
			  ATH10K_TESTMODE_VERSION_MINOR);
	if (ret) {
		kfree_skb(skb);
		return ret;
	}

	ret = nla_put_u32(skb, ATH10K_TM_ATTR_WMI_OP_VERSION,
			  ar->normal_mode_fw.fw_file.wmi_op_version);
	if (ret) {
		kfree_skb(skb);
		return ret;
	}

	return cfg80211_testmode_reply(skb);
}

static int ath10k_tm_fetch_utf_firmware_api_1(struct ath10k *ar,
					      struct ath10k_fw_file *fw_file)
{
	char filename[100];
	int ret;

	snprintf(filename, sizeof(filename), "%s/%s",
		 ar->hw_params.fw.dir, ATH10K_FW_UTF_FILE);

	/* load utf firmware image */
	ret = firmware_request_nowarn(&fw_file->firmware, filename, ar->dev);
	ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode fw request '%s': %d\n",
		   filename, ret);

	if (ret) {
		ath10k_warn(ar, "failed to retrieve utf firmware '%s': %d\n",
			    filename, ret);
		return ret;
	}

	/* We didn't find FW UTF API 1 ("utf.bin") does not advertise
	 * firmware features. Do an ugly hack where we force the firmware
	 * features to match with 10.1 branch so that wmi.c will use the
	 * correct WMI interface.
	 */

	fw_file->wmi_op_version = ATH10K_FW_WMI_OP_VERSION_10_1;
	fw_file->htt_op_version = ATH10K_FW_HTT_OP_VERSION_10_1;
	fw_file->firmware_data = fw_file->firmware->data;
	fw_file->firmware_len = fw_file->firmware->size;

	return 0;
}

static int ath10k_tm_fetch_firmware(struct ath10k *ar)
{
	struct ath10k_fw_components *utf_mode_fw;
	int ret;
	char fw_name[100];
	int fw_api2 = 2;

	switch (ar->hif.bus) {
	case ATH10K_BUS_SDIO:
	case ATH10K_BUS_USB:
		scnprintf(fw_name, sizeof(fw_name), "%s-%s-%d.bin",
			  ATH10K_FW_UTF_FILE_BASE, ath10k_bus_str(ar->hif.bus),
			  fw_api2);
		break;
	default:
		scnprintf(fw_name, sizeof(fw_name), "%s-%d.bin",
			  ATH10K_FW_UTF_FILE_BASE, fw_api2);
		break;
	}

	ret = ath10k_core_fetch_firmware_api_n(ar, fw_name,
					       &ar->testmode.utf_mode_fw.fw_file);
	if (ret == 0) {
		ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using fw utf api 2");
		goto out;
	}

	ret = ath10k_tm_fetch_utf_firmware_api_1(ar, &ar->testmode.utf_mode_fw.fw_file);
	if (ret) {
		ath10k_err(ar, "failed to fetch utf firmware binary: %d", ret);
		return ret;
	}

	ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using utf api 1");

out:
	utf_mode_fw = &ar->testmode.utf_mode_fw;

	/* Use the same board data file as the normal firmware uses (but
	 * it's still "owned" by normal_mode_fw so we shouldn't free it.
	 */
	utf_mode_fw->board_data = ar->normal_mode_fw.board_data;
	utf_mode_fw->board_len = ar->normal_mode_fw.board_len;

	if (!utf_mode_fw->fw_file.otp_data) {
		ath10k_info(ar, "utf.bin didn't contain otp binary, taking it from the normal mode firmware");
		utf_mode_fw->fw_file.otp_data = ar->normal_mode_fw.fw_file.otp_data;
		utf_mode_fw->fw_file.otp_len = ar->normal_mode_fw.fw_file.otp_len;
	}

	return 0;
}

static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[])
{
	const char *ver;
	int ret;

	ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf start\n");

	mutex_lock(&ar->conf_mutex);

	if (ar->state == ATH10K_STATE_UTF) {
		ret = -EALREADY;
		goto err;
	}

	/* start utf only when the driver is not in use  */
	if (ar->state != ATH10K_STATE_OFF) {
		ret = -EBUSY;
		goto err;
	}

	if (WARN_ON(ar->testmode.utf_mode_fw.fw_file.firmware != NULL)) {
		/* utf image is already downloaded, it shouldn't be */
		ret = -EEXIST;
		goto err;
	}

	ret = ath10k_tm_fetch_firmware(ar);
	if (ret) {
		ath10k_err(ar, "failed to fetch UTF firmware: %d", ret);
		goto err;
	}

	if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
	    ar->testmode.utf_mode_fw.fw_file.codeswap_len) {
		ret = ath10k_swap_code_seg_init(ar,
						&ar->testmode.utf_mode_fw.fw_file);
		if (ret) {
			ath10k_warn(ar,
				    "failed to init utf code swap segment: %d\n",
				    ret);
			goto err_release_utf_mode_fw;
		}
	}

	spin_lock_bh(&ar->data_lock);
	ar->testmode.utf_monitor = true;
	spin_unlock_bh(&ar->data_lock);

	ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode wmi version %d\n",
		   ar->testmode.utf_mode_fw.fw_file.wmi_op_version);

	ret = ath10k_hif_power_up(ar, ATH10K_FIRMWARE_MODE_UTF);
	if (ret) {
		ath10k_err(ar, "failed to power up hif (testmode): %d\n", ret);
		ar->state = ATH10K_STATE_OFF;
		goto err_release_utf_mode_fw;
	}

	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_UTF,
				&ar->testmode.utf_mode_fw);
	if (ret) {
		ath10k_err(ar, "failed to start core (testmode): %d\n", ret);
		ar->state = ATH10K_STATE_OFF;
		goto err_power_down;
	}

	ar->state = ATH10K_STATE_UTF;

	if (strlen(ar->testmode.utf_mode_fw.fw_file.fw_version) > 0)
		ver = ar->testmode.utf_mode_fw.fw_file.fw_version;
	else
		ver = "API 1";

	ath10k_info(ar, "UTF firmware %s started\n", ver);

	mutex_unlock(&ar->conf_mutex);

	return 0;

err_power_down:
	ath10k_hif_power_down(ar);

err_release_utf_mode_fw:
	if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
	    ar->testmode.utf_mode_fw.fw_file.codeswap_len)
		ath10k_swap_code_seg_release(ar,
					     &ar->testmode.utf_mode_fw.fw_file);

	release_firmware(ar->testmode.utf_mode_fw.fw_file.firmware);
	ar->testmode.utf_mode_fw.fw_file.firmware = NULL;

err:
	mutex_unlock(&ar->conf_mutex);

	return ret;
}

static void __ath10k_tm_cmd_utf_stop(struct ath10k *ar)
{
	lockdep_assert_held(&ar->conf_mutex);

	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);

	ar->testmode.utf_monitor = false;

	spin_unlock_bh(&ar->data_lock);

	if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
	    ar->testmode.utf_mode_fw.fw_file.codeswap_len)
		ath10k_swap_code_seg_release(ar,
					     &ar->testmode.utf_mode_fw.fw_file);

	release_firmware(ar->testmode.utf_mode_fw.fw_file.firmware);
	ar->testmode.utf_mode_fw.fw_file.firmware = NULL;

	ar->state = ATH10K_STATE_OFF;
}

static int ath10k_tm_cmd_utf_stop(struct ath10k *ar, struct nlattr *tb[])
{
	int ret;

	ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf stop\n");

	mutex_lock(&ar->conf_mutex);

	if (ar->state != ATH10K_STATE_UTF) {
		ret = -ENETDOWN;
		goto out;
	}

	__ath10k_tm_cmd_utf_stop(ar);

	ret = 0;

	ath10k_info(ar, "UTF firmware stopped\n");

out:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_tm_cmd_wmi(struct ath10k *ar, struct nlattr *tb[])
{
	struct sk_buff *skb;
	int ret, buf_len;
	u32 cmd_id;
	void *buf;

	mutex_lock(&ar->conf_mutex);

	if (ar->state != ATH10K_STATE_UTF) {
		ret = -ENETDOWN;
		goto out;
	}

	if (!tb[ATH10K_TM_ATTR_DATA]) {
		ret = -EINVAL;
		goto out;
	}

	if (!tb[ATH10K_TM_ATTR_WMI_CMDID]) {
		ret = -EINVAL;
		goto out;
	}

	buf = nla_data(tb[ATH10K_TM_ATTR_DATA]);
	buf_len = nla_len(tb[ATH10K_TM_ATTR_DATA]);
	cmd_id = nla_get_u32(tb[ATH10K_TM_ATTR_WMI_CMDID]);

	ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
		   "testmode cmd wmi cmd_id %d buf %pK buf_len %d\n",
		   cmd_id, buf, buf_len);

	ath10k_dbg_dump(ar, ATH10K_DBG_TESTMODE, NULL, "", buf, buf_len);

	skb = ath10k_wmi_alloc_skb(ar, buf_len);
	if (!skb) {
		ret = -ENOMEM;
		goto out;
	}

	memcpy(skb->data, buf, buf_len);

	ret = ath10k_wmi_cmd_send(ar, skb, cmd_id);
	if (ret) {
		ath10k_warn(ar, "failed to transmit wmi command (testmode): %d\n",
			    ret);
		goto out;
	}

	ret = 0;

out:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

int ath10k_tm_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
		  void *data, int len)
{
	struct ath10k *ar = hw->priv;
	struct nlattr *tb[ATH10K_TM_ATTR_MAX + 1];
	int ret;

	ret = nla_parse_deprecated(tb, ATH10K_TM_ATTR_MAX, data, len,
				   ath10k_tm_policy, NULL);
	if (ret)
		return ret;

	if (!tb[ATH10K_TM_ATTR_CMD])
		return -EINVAL;

	switch (nla_get_u32(tb[ATH10K_TM_ATTR_CMD])) {
	case ATH10K_TM_CMD_GET_VERSION:
		return ath10k_tm_cmd_get_version(ar, tb);
	case ATH10K_TM_CMD_UTF_START:
		return ath10k_tm_cmd_utf_start(ar, tb);
	case ATH10K_TM_CMD_UTF_STOP:
		return ath10k_tm_cmd_utf_stop(ar, tb);
	case ATH10K_TM_CMD_WMI:
		return ath10k_tm_cmd_wmi(ar, tb);
	default:
		return -EOPNOTSUPP;
	}
}

void ath10k_testmode_destroy(struct ath10k *ar)
{
	mutex_lock(&ar->conf_mutex);

	if (ar->state != ATH10K_STATE_UTF) {
		/* utf firmware is not running, nothing to do */
		goto out;
	}

	__ath10k_tm_cmd_utf_stop(ar);

out:
	mutex_unlock(&ar->conf_mutex);
}