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1/*
2 * Copyright (c) 2014 Qualcomm Atheros, Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include "testmode.h"
18
19#include <net/netlink.h>
20#include <linux/firmware.h>
21
22#include "debug.h"
23#include "wmi.h"
24#include "hif.h"
25#include "hw.h"
26#include "core.h"
27
28#include "testmode_i.h"
29
30static const struct nla_policy ath10k_tm_policy[ATH10K_TM_ATTR_MAX + 1] = {
31 [ATH10K_TM_ATTR_CMD] = { .type = NLA_U32 },
32 [ATH10K_TM_ATTR_DATA] = { .type = NLA_BINARY,
33 .len = ATH10K_TM_DATA_MAX_LEN },
34 [ATH10K_TM_ATTR_WMI_CMDID] = { .type = NLA_U32 },
35 [ATH10K_TM_ATTR_VERSION_MAJOR] = { .type = NLA_U32 },
36 [ATH10K_TM_ATTR_VERSION_MINOR] = { .type = NLA_U32 },
37};
38
39/* Returns true if callee consumes the skb and the skb should be discarded.
40 * Returns false if skb is not used. Does not sleep.
41 */
42bool ath10k_tm_event_wmi(struct ath10k *ar, u32 cmd_id, struct sk_buff *skb)
43{
44 struct sk_buff *nl_skb;
45 bool consumed;
46 int ret;
47
48 ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
49 "testmode event wmi cmd_id %d skb %pK skb->len %d\n",
50 cmd_id, skb, skb->len);
51
52 ath10k_dbg_dump(ar, ATH10K_DBG_TESTMODE, NULL, "", skb->data, skb->len);
53
54 spin_lock_bh(&ar->data_lock);
55
56 if (!ar->testmode.utf_monitor) {
57 consumed = false;
58 goto out;
59 }
60
61 /* Only testmode.c should be handling events from utf firmware,
62 * otherwise all sort of problems will arise as mac80211 operations
63 * are not initialised.
64 */
65 consumed = true;
66
67 nl_skb = cfg80211_testmode_alloc_event_skb(ar->hw->wiphy,
68 2 * sizeof(u32) + skb->len,
69 GFP_ATOMIC);
70 if (!nl_skb) {
71 ath10k_warn(ar,
72 "failed to allocate skb for testmode wmi event\n");
73 goto out;
74 }
75
76 ret = nla_put_u32(nl_skb, ATH10K_TM_ATTR_CMD, ATH10K_TM_CMD_WMI);
77 if (ret) {
78 ath10k_warn(ar,
79 "failed to to put testmode wmi event cmd attribute: %d\n",
80 ret);
81 kfree_skb(nl_skb);
82 goto out;
83 }
84
85 ret = nla_put_u32(nl_skb, ATH10K_TM_ATTR_WMI_CMDID, cmd_id);
86 if (ret) {
87 ath10k_warn(ar,
88 "failed to to put testmode wmi even cmd_id: %d\n",
89 ret);
90 kfree_skb(nl_skb);
91 goto out;
92 }
93
94 ret = nla_put(nl_skb, ATH10K_TM_ATTR_DATA, skb->len, skb->data);
95 if (ret) {
96 ath10k_warn(ar,
97 "failed to copy skb to testmode wmi event: %d\n",
98 ret);
99 kfree_skb(nl_skb);
100 goto out;
101 }
102
103 cfg80211_testmode_event(nl_skb, GFP_ATOMIC);
104
105out:
106 spin_unlock_bh(&ar->data_lock);
107
108 return consumed;
109}
110
111static int ath10k_tm_cmd_get_version(struct ath10k *ar, struct nlattr *tb[])
112{
113 struct sk_buff *skb;
114 int ret;
115
116 ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
117 "testmode cmd get version_major %d version_minor %d\n",
118 ATH10K_TESTMODE_VERSION_MAJOR,
119 ATH10K_TESTMODE_VERSION_MINOR);
120
121 skb = cfg80211_testmode_alloc_reply_skb(ar->hw->wiphy,
122 nla_total_size(sizeof(u32)));
123 if (!skb)
124 return -ENOMEM;
125
126 ret = nla_put_u32(skb, ATH10K_TM_ATTR_VERSION_MAJOR,
127 ATH10K_TESTMODE_VERSION_MAJOR);
128 if (ret) {
129 kfree_skb(skb);
130 return ret;
131 }
132
133 ret = nla_put_u32(skb, ATH10K_TM_ATTR_VERSION_MINOR,
134 ATH10K_TESTMODE_VERSION_MINOR);
135 if (ret) {
136 kfree_skb(skb);
137 return ret;
138 }
139
140 return cfg80211_testmode_reply(skb);
141}
142
143static int ath10k_tm_fetch_utf_firmware_api_1(struct ath10k *ar,
144 struct ath10k_fw_file *fw_file)
145{
146 char filename[100];
147 int ret;
148
149 snprintf(filename, sizeof(filename), "%s/%s",
150 ar->hw_params.fw.dir, ATH10K_FW_UTF_FILE);
151
152 /* load utf firmware image */
153 ret = request_firmware(&fw_file->firmware, filename, ar->dev);
154 if (ret) {
155 ath10k_warn(ar, "failed to retrieve utf firmware '%s': %d\n",
156 filename, ret);
157 return ret;
158 }
159
160 /* We didn't find FW UTF API 1 ("utf.bin") does not advertise
161 * firmware features. Do an ugly hack where we force the firmware
162 * features to match with 10.1 branch so that wmi.c will use the
163 * correct WMI interface.
164 */
165
166 fw_file->wmi_op_version = ATH10K_FW_WMI_OP_VERSION_10_1;
167 fw_file->htt_op_version = ATH10K_FW_HTT_OP_VERSION_10_1;
168 fw_file->firmware_data = fw_file->firmware->data;
169 fw_file->firmware_len = fw_file->firmware->size;
170
171 return 0;
172}
173
174static int ath10k_tm_fetch_firmware(struct ath10k *ar)
175{
176 struct ath10k_fw_components *utf_mode_fw;
177 int ret;
178
179 ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_UTF_API2_FILE,
180 &ar->testmode.utf_mode_fw.fw_file);
181 if (ret == 0) {
182 ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using fw utf api 2");
183 goto out;
184 }
185
186 ret = ath10k_tm_fetch_utf_firmware_api_1(ar, &ar->testmode.utf_mode_fw.fw_file);
187 if (ret) {
188 ath10k_err(ar, "failed to fetch utf firmware binary: %d", ret);
189 return ret;
190 }
191
192 ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using utf api 1");
193
194out:
195 utf_mode_fw = &ar->testmode.utf_mode_fw;
196
197 /* Use the same board data file as the normal firmware uses (but
198 * it's still "owned" by normal_mode_fw so we shouldn't free it.
199 */
200 utf_mode_fw->board_data = ar->normal_mode_fw.board_data;
201 utf_mode_fw->board_len = ar->normal_mode_fw.board_len;
202
203 if (!utf_mode_fw->fw_file.otp_data) {
204 ath10k_info(ar, "utf.bin didn't contain otp binary, taking it from the normal mode firmware");
205 utf_mode_fw->fw_file.otp_data = ar->normal_mode_fw.fw_file.otp_data;
206 utf_mode_fw->fw_file.otp_len = ar->normal_mode_fw.fw_file.otp_len;
207 }
208
209 return 0;
210}
211
212static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[])
213{
214 const char *ver;
215 int ret;
216
217 ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf start\n");
218
219 mutex_lock(&ar->conf_mutex);
220
221 if (ar->state == ATH10K_STATE_UTF) {
222 ret = -EALREADY;
223 goto err;
224 }
225
226 /* start utf only when the driver is not in use */
227 if (ar->state != ATH10K_STATE_OFF) {
228 ret = -EBUSY;
229 goto err;
230 }
231
232 if (WARN_ON(ar->testmode.utf_mode_fw.fw_file.firmware != NULL)) {
233 /* utf image is already downloaded, it shouldn't be */
234 ret = -EEXIST;
235 goto err;
236 }
237
238 ret = ath10k_tm_fetch_firmware(ar);
239 if (ret) {
240 ath10k_err(ar, "failed to fetch UTF firmware: %d", ret);
241 goto err;
242 }
243
244 if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
245 ar->testmode.utf_mode_fw.fw_file.codeswap_len) {
246 ret = ath10k_swap_code_seg_init(ar,
247 &ar->testmode.utf_mode_fw.fw_file);
248 if (ret) {
249 ath10k_warn(ar,
250 "failed to init utf code swap segment: %d\n",
251 ret);
252 goto err_release_utf_mode_fw;
253 }
254 }
255
256 spin_lock_bh(&ar->data_lock);
257 ar->testmode.utf_monitor = true;
258 spin_unlock_bh(&ar->data_lock);
259
260 ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode wmi version %d\n",
261 ar->testmode.utf_mode_fw.fw_file.wmi_op_version);
262
263 ret = ath10k_hif_power_up(ar);
264 if (ret) {
265 ath10k_err(ar, "failed to power up hif (testmode): %d\n", ret);
266 ar->state = ATH10K_STATE_OFF;
267 goto err_release_utf_mode_fw;
268 }
269
270 ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_UTF,
271 &ar->testmode.utf_mode_fw);
272 if (ret) {
273 ath10k_err(ar, "failed to start core (testmode): %d\n", ret);
274 ar->state = ATH10K_STATE_OFF;
275 goto err_power_down;
276 }
277
278 ar->state = ATH10K_STATE_UTF;
279
280 if (strlen(ar->testmode.utf_mode_fw.fw_file.fw_version) > 0)
281 ver = ar->testmode.utf_mode_fw.fw_file.fw_version;
282 else
283 ver = "API 1";
284
285 ath10k_info(ar, "UTF firmware %s started\n", ver);
286
287 mutex_unlock(&ar->conf_mutex);
288
289 return 0;
290
291err_power_down:
292 ath10k_hif_power_down(ar);
293
294err_release_utf_mode_fw:
295 if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
296 ar->testmode.utf_mode_fw.fw_file.codeswap_len)
297 ath10k_swap_code_seg_release(ar,
298 &ar->testmode.utf_mode_fw.fw_file);
299
300 release_firmware(ar->testmode.utf_mode_fw.fw_file.firmware);
301 ar->testmode.utf_mode_fw.fw_file.firmware = NULL;
302
303err:
304 mutex_unlock(&ar->conf_mutex);
305
306 return ret;
307}
308
309static void __ath10k_tm_cmd_utf_stop(struct ath10k *ar)
310{
311 lockdep_assert_held(&ar->conf_mutex);
312
313 ath10k_core_stop(ar);
314 ath10k_hif_power_down(ar);
315
316 spin_lock_bh(&ar->data_lock);
317
318 ar->testmode.utf_monitor = false;
319
320 spin_unlock_bh(&ar->data_lock);
321
322 if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
323 ar->testmode.utf_mode_fw.fw_file.codeswap_len)
324 ath10k_swap_code_seg_release(ar,
325 &ar->testmode.utf_mode_fw.fw_file);
326
327 release_firmware(ar->testmode.utf_mode_fw.fw_file.firmware);
328 ar->testmode.utf_mode_fw.fw_file.firmware = NULL;
329
330 ar->state = ATH10K_STATE_OFF;
331}
332
333static int ath10k_tm_cmd_utf_stop(struct ath10k *ar, struct nlattr *tb[])
334{
335 int ret;
336
337 ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf stop\n");
338
339 mutex_lock(&ar->conf_mutex);
340
341 if (ar->state != ATH10K_STATE_UTF) {
342 ret = -ENETDOWN;
343 goto out;
344 }
345
346 __ath10k_tm_cmd_utf_stop(ar);
347
348 ret = 0;
349
350 ath10k_info(ar, "UTF firmware stopped\n");
351
352out:
353 mutex_unlock(&ar->conf_mutex);
354 return ret;
355}
356
357static int ath10k_tm_cmd_wmi(struct ath10k *ar, struct nlattr *tb[])
358{
359 struct sk_buff *skb;
360 int ret, buf_len;
361 u32 cmd_id;
362 void *buf;
363
364 mutex_lock(&ar->conf_mutex);
365
366 if (ar->state != ATH10K_STATE_UTF) {
367 ret = -ENETDOWN;
368 goto out;
369 }
370
371 if (!tb[ATH10K_TM_ATTR_DATA]) {
372 ret = -EINVAL;
373 goto out;
374 }
375
376 if (!tb[ATH10K_TM_ATTR_WMI_CMDID]) {
377 ret = -EINVAL;
378 goto out;
379 }
380
381 buf = nla_data(tb[ATH10K_TM_ATTR_DATA]);
382 buf_len = nla_len(tb[ATH10K_TM_ATTR_DATA]);
383 cmd_id = nla_get_u32(tb[ATH10K_TM_ATTR_WMI_CMDID]);
384
385 ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
386 "testmode cmd wmi cmd_id %d buf %pK buf_len %d\n",
387 cmd_id, buf, buf_len);
388
389 ath10k_dbg_dump(ar, ATH10K_DBG_TESTMODE, NULL, "", buf, buf_len);
390
391 skb = ath10k_wmi_alloc_skb(ar, buf_len);
392 if (!skb) {
393 ret = -ENOMEM;
394 goto out;
395 }
396
397 memcpy(skb->data, buf, buf_len);
398
399 ret = ath10k_wmi_cmd_send(ar, skb, cmd_id);
400 if (ret) {
401 ath10k_warn(ar, "failed to transmit wmi command (testmode): %d\n",
402 ret);
403 goto out;
404 }
405
406 ret = 0;
407
408out:
409 mutex_unlock(&ar->conf_mutex);
410 return ret;
411}
412
413int ath10k_tm_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
414 void *data, int len)
415{
416 struct ath10k *ar = hw->priv;
417 struct nlattr *tb[ATH10K_TM_ATTR_MAX + 1];
418 int ret;
419
420 ret = nla_parse(tb, ATH10K_TM_ATTR_MAX, data, len,
421 ath10k_tm_policy);
422 if (ret)
423 return ret;
424
425 if (!tb[ATH10K_TM_ATTR_CMD])
426 return -EINVAL;
427
428 switch (nla_get_u32(tb[ATH10K_TM_ATTR_CMD])) {
429 case ATH10K_TM_CMD_GET_VERSION:
430 return ath10k_tm_cmd_get_version(ar, tb);
431 case ATH10K_TM_CMD_UTF_START:
432 return ath10k_tm_cmd_utf_start(ar, tb);
433 case ATH10K_TM_CMD_UTF_STOP:
434 return ath10k_tm_cmd_utf_stop(ar, tb);
435 case ATH10K_TM_CMD_WMI:
436 return ath10k_tm_cmd_wmi(ar, tb);
437 default:
438 return -EOPNOTSUPP;
439 }
440}
441
442void ath10k_testmode_destroy(struct ath10k *ar)
443{
444 mutex_lock(&ar->conf_mutex);
445
446 if (ar->state != ATH10K_STATE_UTF) {
447 /* utf firmware is not running, nothing to do */
448 goto out;
449 }
450
451 __ath10k_tm_cmd_utf_stop(ar);
452
453out:
454 mutex_unlock(&ar->conf_mutex);
455}