Commit | Line | Data |
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f65c0825 SM |
1 | /* |
2 | * Copyright (c) 2013 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 <linux/relay.h> | |
2aa56cca | 18 | #include <linux/random.h> |
f65c0825 SM |
19 | #include "ath9k.h" |
20 | ||
21 | static s8 fix_rssi_inv_only(u8 rssi_val) | |
22 | { | |
23 | if (rssi_val == 128) | |
24 | rssi_val = 0; | |
25 | return (s8) rssi_val; | |
26 | } | |
27 | ||
1111d426 | 28 | static void ath_debug_send_fft_sample(struct ath_spec_scan_priv *spec_priv, |
f65c0825 SM |
29 | struct fft_sample_tlv *fft_sample_tlv) |
30 | { | |
31 | int length; | |
1111d426 | 32 | if (!spec_priv->rfs_chan_spec_scan) |
f65c0825 SM |
33 | return; |
34 | ||
35 | length = __be16_to_cpu(fft_sample_tlv->length) + | |
36 | sizeof(*fft_sample_tlv); | |
1111d426 | 37 | relay_write(spec_priv->rfs_chan_spec_scan, fft_sample_tlv, length); |
f65c0825 SM |
38 | } |
39 | ||
72dd2cda NK |
40 | typedef int (ath_cmn_fft_idx_validator) (u8 *sample_end, int bytes_read); |
41 | ||
42 | static int | |
43 | ath_cmn_max_idx_verify_ht20_fft(u8 *sample_end, int bytes_read) | |
44 | { | |
45 | struct ath_ht20_mag_info *mag_info; | |
46 | u8 *sample; | |
47 | u16 max_magnitude; | |
48 | u8 max_index; | |
49 | u8 max_exp; | |
50 | ||
51 | /* Sanity check so that we don't read outside the read | |
52 | * buffer | |
53 | */ | |
54 | if (bytes_read < SPECTRAL_HT20_SAMPLE_LEN - 1) | |
55 | return -1; | |
56 | ||
57 | mag_info = (struct ath_ht20_mag_info *) (sample_end - | |
58 | sizeof(struct ath_ht20_mag_info) + 1); | |
59 | ||
60 | sample = sample_end - SPECTRAL_HT20_SAMPLE_LEN + 1; | |
61 | ||
2f85786b | 62 | max_index = spectral_max_index_ht20(mag_info->all_bins); |
72dd2cda NK |
63 | max_magnitude = spectral_max_magnitude(mag_info->all_bins); |
64 | ||
65 | max_exp = mag_info->max_exp & 0xf; | |
66 | ||
67 | /* Don't try to read something outside the read buffer | |
68 | * in case of a missing byte (so bins[0] will be outside | |
69 | * the read buffer) | |
70 | */ | |
71 | if (bytes_read < SPECTRAL_HT20_SAMPLE_LEN && max_index < 1) | |
72 | return -1; | |
73 | ||
4e7a3fa5 | 74 | if ((sample[max_index] & 0xf8) != ((max_magnitude >> max_exp) & 0xf8)) |
72dd2cda NK |
75 | return -1; |
76 | else | |
77 | return 0; | |
78 | } | |
79 | ||
80 | static int | |
81 | ath_cmn_max_idx_verify_ht20_40_fft(u8 *sample_end, int bytes_read) | |
82 | { | |
83 | struct ath_ht20_40_mag_info *mag_info; | |
84 | u8 *sample; | |
85 | u16 lower_mag, upper_mag; | |
86 | u8 lower_max_index, upper_max_index; | |
87 | u8 max_exp; | |
88 | int dc_pos = SPECTRAL_HT20_40_NUM_BINS / 2; | |
89 | ||
90 | /* Sanity check so that we don't read outside the read | |
91 | * buffer | |
92 | */ | |
93 | if (bytes_read < SPECTRAL_HT20_40_SAMPLE_LEN - 1) | |
94 | return -1; | |
95 | ||
96 | mag_info = (struct ath_ht20_40_mag_info *) (sample_end - | |
97 | sizeof(struct ath_ht20_40_mag_info) + 1); | |
98 | ||
99 | sample = sample_end - SPECTRAL_HT20_40_SAMPLE_LEN + 1; | |
100 | ||
101 | lower_mag = spectral_max_magnitude(mag_info->lower_bins); | |
2f85786b | 102 | lower_max_index = spectral_max_index_ht40(mag_info->lower_bins); |
72dd2cda NK |
103 | |
104 | upper_mag = spectral_max_magnitude(mag_info->upper_bins); | |
2f85786b | 105 | upper_max_index = spectral_max_index_ht40(mag_info->upper_bins); |
72dd2cda NK |
106 | |
107 | max_exp = mag_info->max_exp & 0xf; | |
108 | ||
109 | /* Don't try to read something outside the read buffer | |
110 | * in case of a missing byte (so bins[0] will be outside | |
111 | * the read buffer) | |
112 | */ | |
113 | if (bytes_read < SPECTRAL_HT20_40_SAMPLE_LEN && | |
114 | ((upper_max_index < 1) || (lower_max_index < 1))) | |
115 | return -1; | |
116 | ||
4e7a3fa5 SW |
117 | if (((sample[upper_max_index + dc_pos] & 0xf8) != |
118 | ((upper_mag >> max_exp) & 0xf8)) || | |
119 | ((sample[lower_max_index] & 0xf8) != | |
120 | ((lower_mag >> max_exp) & 0xf8))) | |
72dd2cda NK |
121 | return -1; |
122 | else | |
123 | return 0; | |
124 | } | |
125 | ||
58b5e4c7 NK |
126 | typedef int (ath_cmn_fft_sample_handler) (struct ath_rx_status *rs, |
127 | struct ath_spec_scan_priv *spec_priv, | |
128 | u8 *sample_buf, u64 tsf, u16 freq, int chan_type); | |
129 | ||
130 | static int | |
131 | ath_cmn_process_ht20_fft(struct ath_rx_status *rs, | |
132 | struct ath_spec_scan_priv *spec_priv, | |
133 | u8 *sample_buf, | |
134 | u64 tsf, u16 freq, int chan_type) | |
135 | { | |
136 | struct fft_sample_ht20 fft_sample_20; | |
7fa580c1 | 137 | struct ath_common *common = ath9k_hw_common(spec_priv->ah); |
58b5e4c7 NK |
138 | struct ath_hw *ah = spec_priv->ah; |
139 | struct ath_ht20_mag_info *mag_info; | |
140 | struct fft_sample_tlv *tlv; | |
7fa580c1 NK |
141 | int i = 0; |
142 | int ret = 0; | |
58b5e4c7 | 143 | int dc_pos = SPECTRAL_HT20_NUM_BINS / 2; |
7fa580c1 NK |
144 | u16 magnitude, tmp_mag, length; |
145 | u8 max_index, bitmap_w, max_exp; | |
58b5e4c7 NK |
146 | |
147 | length = sizeof(fft_sample_20) - sizeof(struct fft_sample_tlv); | |
148 | fft_sample_20.tlv.type = ATH_FFT_SAMPLE_HT20; | |
149 | fft_sample_20.tlv.length = __cpu_to_be16(length); | |
150 | fft_sample_20.freq = __cpu_to_be16(freq); | |
151 | fft_sample_20.rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]); | |
152 | fft_sample_20.noise = ah->noise; | |
153 | ||
154 | mag_info = (struct ath_ht20_mag_info *) (sample_buf + | |
155 | SPECTRAL_HT20_NUM_BINS); | |
156 | ||
157 | magnitude = spectral_max_magnitude(mag_info->all_bins); | |
158 | fft_sample_20.max_magnitude = __cpu_to_be16(magnitude); | |
159 | ||
2f85786b | 160 | max_index = spectral_max_index_ht20(mag_info->all_bins); |
58b5e4c7 NK |
161 | fft_sample_20.max_index = max_index; |
162 | ||
163 | bitmap_w = spectral_bitmap_weight(mag_info->all_bins); | |
164 | fft_sample_20.bitmap_weight = bitmap_w; | |
165 | ||
7fa580c1 NK |
166 | max_exp = mag_info->max_exp & 0xf; |
167 | fft_sample_20.max_exp = max_exp; | |
58b5e4c7 NK |
168 | |
169 | fft_sample_20.tsf = __cpu_to_be64(tsf); | |
170 | ||
171 | memcpy(fft_sample_20.data, sample_buf, SPECTRAL_HT20_NUM_BINS); | |
172 | ||
7fa580c1 NK |
173 | ath_dbg(common, SPECTRAL_SCAN, "FFT HT20 frame: max mag 0x%X," |
174 | "max_mag_idx %i\n", | |
175 | magnitude >> max_exp, | |
176 | max_index); | |
177 | ||
4e7a3fa5 SW |
178 | if ((fft_sample_20.data[max_index] & 0xf8) != |
179 | ((magnitude >> max_exp) & 0xf8)) { | |
7fa580c1 NK |
180 | ath_dbg(common, SPECTRAL_SCAN, "Magnitude mismatch !\n"); |
181 | ret = -1; | |
182 | } | |
183 | ||
58b5e4c7 NK |
184 | /* DC value (value in the middle) is the blind spot of the spectral |
185 | * sample and invalid, interpolate it. | |
186 | */ | |
187 | fft_sample_20.data[dc_pos] = (fft_sample_20.data[dc_pos + 1] + | |
188 | fft_sample_20.data[dc_pos - 1]) / 2; | |
189 | ||
7fa580c1 NK |
190 | /* Check if the maximum magnitude is indeed maximum, |
191 | * also if the maximum value was at dc_pos, calculate | |
192 | * a new one (since value at dc_pos is invalid). | |
193 | */ | |
194 | if (max_index == dc_pos) { | |
195 | tmp_mag = 0; | |
196 | for (i = 0; i < dc_pos; i++) { | |
197 | if (fft_sample_20.data[i] > tmp_mag) { | |
198 | tmp_mag = fft_sample_20.data[i]; | |
199 | fft_sample_20.max_index = i; | |
200 | } | |
201 | } | |
202 | ||
203 | magnitude = tmp_mag << max_exp; | |
204 | fft_sample_20.max_magnitude = __cpu_to_be16(magnitude); | |
205 | ||
206 | ath_dbg(common, SPECTRAL_SCAN, | |
207 | "Calculated new lower max 0x%X at %i\n", | |
208 | tmp_mag, fft_sample_20.max_index); | |
209 | } else | |
210 | for (i = 0; i < SPECTRAL_HT20_NUM_BINS; i++) { | |
211 | if (fft_sample_20.data[i] == (magnitude >> max_exp)) | |
212 | ath_dbg(common, SPECTRAL_SCAN, | |
213 | "Got max: 0x%X at index %i\n", | |
214 | fft_sample_20.data[i], i); | |
215 | ||
216 | if (fft_sample_20.data[i] > (magnitude >> max_exp)) { | |
217 | ath_dbg(common, SPECTRAL_SCAN, | |
218 | "Got bin %i greater than max: 0x%X\n", | |
219 | i, fft_sample_20.data[i]); | |
220 | ret = -1; | |
221 | } | |
222 | } | |
223 | ||
224 | if (ret < 0) | |
225 | return ret; | |
226 | ||
58b5e4c7 NK |
227 | tlv = (struct fft_sample_tlv *)&fft_sample_20; |
228 | ||
229 | ath_debug_send_fft_sample(spec_priv, tlv); | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | static int | |
235 | ath_cmn_process_ht20_40_fft(struct ath_rx_status *rs, | |
236 | struct ath_spec_scan_priv *spec_priv, | |
237 | u8 *sample_buf, | |
238 | u64 tsf, u16 freq, int chan_type) | |
239 | { | |
240 | struct fft_sample_ht20_40 fft_sample_40; | |
7fa580c1 | 241 | struct ath_common *common = ath9k_hw_common(spec_priv->ah); |
58b5e4c7 NK |
242 | struct ath_hw *ah = spec_priv->ah; |
243 | struct ath9k_hw_cal_data *caldata = ah->caldata; | |
244 | struct ath_ht20_40_mag_info *mag_info; | |
245 | struct fft_sample_tlv *tlv; | |
246 | int dc_pos = SPECTRAL_HT20_40_NUM_BINS / 2; | |
7fa580c1 NK |
247 | int i = 0; |
248 | int ret = 0; | |
58b5e4c7 | 249 | s16 ext_nf; |
7fa580c1 | 250 | u16 lower_mag, upper_mag, tmp_mag, length; |
58b5e4c7 NK |
251 | s8 lower_rssi, upper_rssi; |
252 | u8 lower_max_index, upper_max_index; | |
7fa580c1 | 253 | u8 lower_bitmap_w, upper_bitmap_w, max_exp; |
58b5e4c7 NK |
254 | |
255 | if (caldata) | |
256 | ext_nf = ath9k_hw_getchan_noise(ah, ah->curchan, | |
257 | caldata->nfCalHist[3].privNF); | |
258 | else | |
259 | ext_nf = ATH_DEFAULT_NOISE_FLOOR; | |
260 | ||
261 | length = sizeof(fft_sample_40) - sizeof(struct fft_sample_tlv); | |
262 | fft_sample_40.tlv.type = ATH_FFT_SAMPLE_HT20_40; | |
263 | fft_sample_40.tlv.length = __cpu_to_be16(length); | |
264 | fft_sample_40.freq = __cpu_to_be16(freq); | |
265 | fft_sample_40.channel_type = chan_type; | |
266 | ||
267 | if (chan_type == NL80211_CHAN_HT40PLUS) { | |
268 | lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]); | |
269 | upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ext[0]); | |
270 | ||
271 | fft_sample_40.lower_noise = ah->noise; | |
272 | fft_sample_40.upper_noise = ext_nf; | |
273 | } else { | |
274 | lower_rssi = fix_rssi_inv_only(rs->rs_rssi_ext[0]); | |
275 | upper_rssi = fix_rssi_inv_only(rs->rs_rssi_ctl[0]); | |
276 | ||
277 | fft_sample_40.lower_noise = ext_nf; | |
278 | fft_sample_40.upper_noise = ah->noise; | |
279 | } | |
280 | ||
281 | fft_sample_40.lower_rssi = lower_rssi; | |
282 | fft_sample_40.upper_rssi = upper_rssi; | |
283 | ||
284 | mag_info = (struct ath_ht20_40_mag_info *) (sample_buf + | |
285 | SPECTRAL_HT20_40_NUM_BINS); | |
286 | ||
287 | lower_mag = spectral_max_magnitude(mag_info->lower_bins); | |
288 | fft_sample_40.lower_max_magnitude = __cpu_to_be16(lower_mag); | |
289 | ||
290 | upper_mag = spectral_max_magnitude(mag_info->upper_bins); | |
291 | fft_sample_40.upper_max_magnitude = __cpu_to_be16(upper_mag); | |
292 | ||
2f85786b | 293 | lower_max_index = spectral_max_index_ht40(mag_info->lower_bins); |
58b5e4c7 NK |
294 | fft_sample_40.lower_max_index = lower_max_index; |
295 | ||
2f85786b | 296 | upper_max_index = spectral_max_index_ht40(mag_info->upper_bins); |
58b5e4c7 NK |
297 | fft_sample_40.upper_max_index = upper_max_index; |
298 | ||
299 | lower_bitmap_w = spectral_bitmap_weight(mag_info->lower_bins); | |
300 | fft_sample_40.lower_bitmap_weight = lower_bitmap_w; | |
301 | ||
302 | upper_bitmap_w = spectral_bitmap_weight(mag_info->upper_bins); | |
303 | fft_sample_40.upper_bitmap_weight = upper_bitmap_w; | |
304 | ||
7fa580c1 NK |
305 | max_exp = mag_info->max_exp & 0xf; |
306 | fft_sample_40.max_exp = max_exp; | |
58b5e4c7 NK |
307 | |
308 | fft_sample_40.tsf = __cpu_to_be64(tsf); | |
309 | ||
310 | memcpy(fft_sample_40.data, sample_buf, SPECTRAL_HT20_40_NUM_BINS); | |
311 | ||
7fa580c1 NK |
312 | ath_dbg(common, SPECTRAL_SCAN, "FFT HT20/40 frame: lower mag 0x%X," |
313 | "lower_mag_idx %i, upper mag 0x%X," | |
314 | "upper_mag_idx %i\n", | |
315 | lower_mag >> max_exp, | |
316 | lower_max_index, | |
317 | upper_mag >> max_exp, | |
318 | upper_max_index); | |
319 | ||
7fa580c1 NK |
320 | /* Check if we got the expected magnitude values at |
321 | * the expected bins | |
322 | */ | |
4e7a3fa5 SW |
323 | if (((fft_sample_40.data[upper_max_index + dc_pos] & 0xf8) |
324 | != ((upper_mag >> max_exp) & 0xf8)) || | |
325 | ((fft_sample_40.data[lower_max_index] & 0xf8) | |
326 | != ((lower_mag >> max_exp) & 0xf8))) { | |
7fa580c1 NK |
327 | ath_dbg(common, SPECTRAL_SCAN, "Magnitude mismatch !\n"); |
328 | ret = -1; | |
329 | } | |
330 | ||
58b5e4c7 NK |
331 | /* DC value (value in the middle) is the blind spot of the spectral |
332 | * sample and invalid, interpolate it. | |
333 | */ | |
334 | fft_sample_40.data[dc_pos] = (fft_sample_40.data[dc_pos + 1] + | |
335 | fft_sample_40.data[dc_pos - 1]) / 2; | |
336 | ||
7fa580c1 NK |
337 | /* Check if the maximum magnitudes are indeed maximum, |
338 | * also if the maximum value was at dc_pos, calculate | |
339 | * a new one (since value at dc_pos is invalid). | |
340 | */ | |
341 | if (lower_max_index == dc_pos) { | |
342 | tmp_mag = 0; | |
343 | for (i = 0; i < dc_pos; i++) { | |
344 | if (fft_sample_40.data[i] > tmp_mag) { | |
345 | tmp_mag = fft_sample_40.data[i]; | |
346 | fft_sample_40.lower_max_index = i; | |
347 | } | |
348 | } | |
349 | ||
350 | lower_mag = tmp_mag << max_exp; | |
351 | fft_sample_40.lower_max_magnitude = __cpu_to_be16(lower_mag); | |
352 | ||
353 | ath_dbg(common, SPECTRAL_SCAN, | |
354 | "Calculated new lower max 0x%X at %i\n", | |
355 | tmp_mag, fft_sample_40.lower_max_index); | |
356 | } else | |
357 | for (i = 0; i < dc_pos; i++) { | |
358 | if (fft_sample_40.data[i] == (lower_mag >> max_exp)) | |
359 | ath_dbg(common, SPECTRAL_SCAN, | |
360 | "Got lower mag: 0x%X at index %i\n", | |
361 | fft_sample_40.data[i], i); | |
362 | ||
363 | if (fft_sample_40.data[i] > (lower_mag >> max_exp)) { | |
364 | ath_dbg(common, SPECTRAL_SCAN, | |
365 | "Got lower bin %i higher than max: 0x%X\n", | |
366 | i, fft_sample_40.data[i]); | |
367 | ret = -1; | |
368 | } | |
369 | } | |
370 | ||
371 | if (upper_max_index == dc_pos) { | |
372 | tmp_mag = 0; | |
373 | for (i = dc_pos; i < SPECTRAL_HT20_40_NUM_BINS; i++) { | |
374 | if (fft_sample_40.data[i] > tmp_mag) { | |
375 | tmp_mag = fft_sample_40.data[i]; | |
376 | fft_sample_40.upper_max_index = i; | |
377 | } | |
378 | } | |
379 | upper_mag = tmp_mag << max_exp; | |
380 | fft_sample_40.upper_max_magnitude = __cpu_to_be16(upper_mag); | |
381 | ||
382 | ath_dbg(common, SPECTRAL_SCAN, | |
383 | "Calculated new upper max 0x%X at %i\n", | |
4fb5837a | 384 | tmp_mag, fft_sample_40.upper_max_index); |
7fa580c1 NK |
385 | } else |
386 | for (i = dc_pos; i < SPECTRAL_HT20_40_NUM_BINS; i++) { | |
387 | if (fft_sample_40.data[i] == (upper_mag >> max_exp)) | |
388 | ath_dbg(common, SPECTRAL_SCAN, | |
389 | "Got upper mag: 0x%X at index %i\n", | |
390 | fft_sample_40.data[i], i); | |
391 | ||
392 | if (fft_sample_40.data[i] > (upper_mag >> max_exp)) { | |
393 | ath_dbg(common, SPECTRAL_SCAN, | |
394 | "Got upper bin %i higher than max: 0x%X\n", | |
395 | i, fft_sample_40.data[i]); | |
396 | ||
397 | ret = -1; | |
398 | } | |
399 | } | |
400 | ||
401 | if (ret < 0) | |
402 | return ret; | |
403 | ||
58b5e4c7 NK |
404 | tlv = (struct fft_sample_tlv *)&fft_sample_40; |
405 | ||
406 | ath_debug_send_fft_sample(spec_priv, tlv); | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
0f2c75de NK |
411 | static inline void |
412 | ath_cmn_copy_fft_frame(u8 *in, u8 *out, int sample_len, int sample_bytes) | |
413 | { | |
414 | switch (sample_bytes - sample_len) { | |
415 | case -1: | |
416 | /* First byte missing */ | |
417 | memcpy(&out[1], in, | |
418 | sample_len - 1); | |
419 | break; | |
420 | case 0: | |
421 | /* Length correct, nothing to do. */ | |
422 | memcpy(out, in, sample_len); | |
423 | break; | |
424 | case 1: | |
425 | /* MAC added 2 extra bytes AND first byte | |
426 | * is missing. | |
427 | */ | |
428 | memcpy(&out[1], in, 30); | |
429 | out[31] = in[31]; | |
430 | memcpy(&out[32], &in[33], | |
431 | sample_len - 32); | |
432 | break; | |
433 | case 2: | |
434 | /* MAC added 2 extra bytes at bin 30 and 32, | |
435 | * remove them. | |
436 | */ | |
437 | memcpy(out, in, 30); | |
438 | out[30] = in[31]; | |
439 | memcpy(&out[31], &in[33], | |
440 | sample_len - 31); | |
441 | break; | |
442 | default: | |
443 | break; | |
444 | } | |
445 | } | |
446 | ||
6b8f85a9 NK |
447 | static int |
448 | ath_cmn_is_fft_buf_full(struct ath_spec_scan_priv *spec_priv) | |
449 | { | |
450 | int i = 0; | |
451 | int ret = 0; | |
221b6ec6 | 452 | struct rchan_buf *buf; |
6b8f85a9 NK |
453 | struct rchan *rc = spec_priv->rfs_chan_spec_scan; |
454 | ||
221b6ec6 SG |
455 | for_each_possible_cpu(i) { |
456 | if ((buf = *per_cpu_ptr(rc->buf, i))) { | |
457 | ret += relay_buf_full(buf); | |
458 | } | |
459 | } | |
6b8f85a9 | 460 | |
221b6ec6 | 461 | if (ret) |
6b8f85a9 NK |
462 | return 1; |
463 | else | |
464 | return 0; | |
465 | } | |
466 | ||
f65c0825 | 467 | /* returns 1 if this was a spectral frame, even if not handled. */ |
67dc74f1 | 468 | int ath_cmn_process_fft(struct ath_spec_scan_priv *spec_priv, struct ieee80211_hdr *hdr, |
f65c0825 SM |
469 | struct ath_rx_status *rs, u64 tsf) |
470 | { | |
58b5e4c7 | 471 | u8 sample_buf[SPECTRAL_SAMPLE_MAX_LEN] = {0}; |
1111d426 OR |
472 | struct ath_hw *ah = spec_priv->ah; |
473 | struct ath_common *common = ath9k_hw_common(spec_priv->ah); | |
d6e71dd1 | 474 | struct ath_softc *sc = common->priv; |
58b5e4c7 | 475 | u8 num_bins, *vdata = (u8 *)hdr; |
f65c0825 SM |
476 | struct ath_radar_info *radar_info; |
477 | int len = rs->rs_datalen; | |
72dd2cda NK |
478 | int i; |
479 | int got_slen = 0; | |
480 | u8 *sample_start; | |
481 | int sample_bytes = 0; | |
482 | int ret = 0; | |
58b5e4c7 | 483 | u16 fft_len, sample_len, freq = ah->curchan->chan->center_freq; |
f65c0825 | 484 | enum nl80211_channel_type chan_type; |
72dd2cda | 485 | ath_cmn_fft_idx_validator *fft_idx_validator; |
58b5e4c7 | 486 | ath_cmn_fft_sample_handler *fft_handler; |
f65c0825 SM |
487 | |
488 | /* AR9280 and before report via ATH9K_PHYERR_RADAR, AR93xx and newer | |
489 | * via ATH9K_PHYERR_SPECTRAL. Haven't seen ATH9K_PHYERR_FALSE_RADAR_EXT | |
490 | * yet, but this is supposed to be possible as well. | |
491 | */ | |
492 | if (rs->rs_phyerr != ATH9K_PHYERR_RADAR && | |
493 | rs->rs_phyerr != ATH9K_PHYERR_FALSE_RADAR_EXT && | |
494 | rs->rs_phyerr != ATH9K_PHYERR_SPECTRAL) | |
495 | return 0; | |
496 | ||
497 | /* check if spectral scan bit is set. This does not have to be checked | |
498 | * if received through a SPECTRAL phy error, but shouldn't hurt. | |
499 | */ | |
500 | radar_info = ((struct ath_radar_info *)&vdata[len]) - 1; | |
501 | if (!(radar_info->pulse_bw_info & SPECTRAL_SCAN_BITMASK)) | |
502 | return 0; | |
503 | ||
40bea976 MP |
504 | if (!spec_priv->rfs_chan_spec_scan) |
505 | return 1; | |
506 | ||
6b8f85a9 NK |
507 | /* Output buffers are full, no need to process anything |
508 | * since there is no space to put the result anyway | |
509 | */ | |
510 | ret = ath_cmn_is_fft_buf_full(spec_priv); | |
511 | if (ret == 1) { | |
512 | ath_dbg(common, SPECTRAL_SCAN, "FFT report ignored, no space " | |
513 | "left on output buffers\n"); | |
514 | return 1; | |
515 | } | |
516 | ||
1111d426 | 517 | chan_type = cfg80211_get_chandef_type(&common->hw->conf.chandef); |
f65c0825 SM |
518 | if ((chan_type == NL80211_CHAN_HT40MINUS) || |
519 | (chan_type == NL80211_CHAN_HT40PLUS)) { | |
520 | fft_len = SPECTRAL_HT20_40_TOTAL_DATA_LEN; | |
58b5e4c7 | 521 | sample_len = SPECTRAL_HT20_40_SAMPLE_LEN; |
f65c0825 | 522 | num_bins = SPECTRAL_HT20_40_NUM_BINS; |
72dd2cda | 523 | fft_idx_validator = &ath_cmn_max_idx_verify_ht20_40_fft; |
58b5e4c7 | 524 | fft_handler = &ath_cmn_process_ht20_40_fft; |
f65c0825 SM |
525 | } else { |
526 | fft_len = SPECTRAL_HT20_TOTAL_DATA_LEN; | |
58b5e4c7 | 527 | sample_len = SPECTRAL_HT20_SAMPLE_LEN; |
f65c0825 | 528 | num_bins = SPECTRAL_HT20_NUM_BINS; |
72dd2cda | 529 | fft_idx_validator = ath_cmn_max_idx_verify_ht20_fft; |
58b5e4c7 | 530 | fft_handler = &ath_cmn_process_ht20_fft; |
f65c0825 SM |
531 | } |
532 | ||
72dd2cda NK |
533 | ath_dbg(common, SPECTRAL_SCAN, "Got radar dump bw_info: 0x%X," |
534 | "len: %i fft_len: %i\n", | |
535 | radar_info->pulse_bw_info, | |
536 | len, | |
537 | fft_len); | |
538 | sample_start = vdata; | |
539 | for (i = 0; i < len - 2; i++) { | |
540 | sample_bytes++; | |
541 | ||
542 | /* Only a single sample received, no need to look | |
543 | * for the sample's end, do the correction based | |
544 | * on the packet's length instead. Note that hw | |
545 | * will always put the radar_info structure on | |
546 | * the end. | |
547 | */ | |
548 | if (len <= fft_len + 2) { | |
549 | sample_bytes = len - sizeof(struct ath_radar_info); | |
550 | got_slen = 1; | |
551 | } | |
f65c0825 | 552 | |
72dd2cda NK |
553 | /* Search for the end of the FFT frame between |
554 | * sample_len - 1 and sample_len + 2. exp_max is 3 | |
555 | * bits long and it's the only value on the last | |
556 | * byte of the frame so since it'll be smaller than | |
557 | * the next byte (the first bin of the next sample) | |
558 | * 90% of the time, we can use it as a separator. | |
559 | */ | |
560 | if (vdata[i] <= 0x7 && sample_bytes >= sample_len - 1) { | |
561 | ||
562 | /* Got a frame length within boundaries, there are | |
563 | * four scenarios here: | |
564 | * | |
565 | * a) sample_len -> We got the correct length | |
566 | * b) sample_len + 2 -> 2 bytes added around bin[31] | |
567 | * c) sample_len - 1 -> The first byte is missing | |
568 | * d) sample_len + 1 -> b + c at the same time | |
569 | * | |
570 | * When MAC adds 2 extra bytes, bin[31] and bin[32] | |
571 | * have the same value, so we can use that for further | |
572 | * verification in cases b and d. | |
573 | */ | |
574 | ||
575 | /* Did we go too far ? If so we couldn't determine | |
576 | * this sample's boundaries, discard any further | |
577 | * data | |
578 | */ | |
579 | if ((sample_bytes > sample_len + 2) || | |
580 | ((sample_bytes > sample_len) && | |
581 | (sample_start[31] != sample_start[32]))) | |
582 | break; | |
583 | ||
584 | /* See if we got a valid frame by checking the | |
585 | * consistency of mag_info fields. This is to | |
586 | * prevent from "fixing" a correct frame. | |
587 | * Failure is non-fatal, later frames may | |
588 | * be valid. | |
589 | */ | |
590 | if (!fft_idx_validator(&vdata[i], i)) { | |
591 | ath_dbg(common, SPECTRAL_SCAN, | |
592 | "Found valid fft frame at %i\n", i); | |
593 | got_slen = 1; | |
594 | } | |
595 | ||
596 | /* We expect 1 - 2 more bytes */ | |
597 | else if ((sample_start[31] == sample_start[32]) && | |
598 | (sample_bytes >= sample_len) && | |
599 | (sample_bytes < sample_len + 2) && | |
600 | (vdata[i + 1] <= 0x7)) | |
601 | continue; | |
f65c0825 | 602 | |
72dd2cda NK |
603 | /* Try to distinguish cases a and c */ |
604 | else if ((sample_bytes == sample_len - 1) && | |
605 | (vdata[i + 1] <= 0x7)) | |
606 | continue; | |
607 | ||
608 | got_slen = 1; | |
609 | } | |
610 | ||
611 | if (got_slen) { | |
612 | ath_dbg(common, SPECTRAL_SCAN, "FFT frame len: %i\n", | |
613 | sample_bytes); | |
0f2c75de NK |
614 | |
615 | /* Only try to fix a frame if it's the only one | |
616 | * on the report, else just skip it. | |
617 | */ | |
618 | if (sample_bytes != sample_len && len <= fft_len + 2) { | |
619 | ath_cmn_copy_fft_frame(sample_start, | |
620 | sample_buf, sample_len, | |
621 | sample_bytes); | |
622 | ||
03224678 SW |
623 | ret = fft_handler(rs, spec_priv, sample_buf, |
624 | tsf, freq, chan_type); | |
625 | ||
626 | if (ret == 0) | |
72569b7b | 627 | RX_STAT_INC(sc, rx_spectral_sample_good); |
03224678 | 628 | else |
72569b7b | 629 | RX_STAT_INC(sc, rx_spectral_sample_err); |
3ea2ce3f NK |
630 | |
631 | memset(sample_buf, 0, SPECTRAL_SAMPLE_MAX_LEN); | |
2aa56cca NK |
632 | |
633 | /* Mix the received bins to the /dev/random | |
634 | * pool | |
635 | */ | |
636 | add_device_randomness(sample_buf, num_bins); | |
0f2c75de NK |
637 | } |
638 | ||
639 | /* Process a normal frame */ | |
2aa56cca | 640 | if (sample_bytes == sample_len) { |
9acc98b9 | 641 | ret = fft_handler(rs, spec_priv, sample_start, |
0f2c75de | 642 | tsf, freq, chan_type); |
72dd2cda | 643 | |
03224678 | 644 | if (ret == 0) |
72569b7b | 645 | RX_STAT_INC(sc, rx_spectral_sample_good); |
03224678 | 646 | else |
72569b7b | 647 | RX_STAT_INC(sc, rx_spectral_sample_err); |
03224678 | 648 | |
2aa56cca NK |
649 | /* Mix the received bins to the /dev/random |
650 | * pool | |
651 | */ | |
652 | add_device_randomness(sample_start, num_bins); | |
653 | } | |
654 | ||
0f2c75de NK |
655 | /* Short report processed, break out of the |
656 | * loop. | |
657 | */ | |
658 | if (len <= fft_len + 2) | |
b796a6c0 | 659 | return 1; |
0f2c75de | 660 | |
72dd2cda | 661 | sample_start = &vdata[i + 1]; |
0f2c75de | 662 | |
72dd2cda NK |
663 | /* -1 to grab sample_len -1, -2 since |
664 | * they 'll get increased by one. In case | |
665 | * of failure try to recover by going byte | |
0f2c75de NK |
666 | * by byte instead. |
667 | */ | |
72dd2cda NK |
668 | if (ret == 0) { |
669 | i += num_bins - 2; | |
670 | sample_bytes = num_bins - 2; | |
671 | } | |
672 | got_slen = 0; | |
673 | } | |
674 | } | |
f65c0825 | 675 | |
72dd2cda NK |
676 | i -= num_bins - 2; |
677 | if (len - i != sizeof(struct ath_radar_info)) | |
678 | ath_dbg(common, SPECTRAL_SCAN, "FFT report truncated" | |
679 | "(bytes left: %i)\n", | |
680 | len - i); | |
f65c0825 SM |
681 | return 1; |
682 | } | |
67dc74f1 | 683 | EXPORT_SYMBOL(ath_cmn_process_fft); |
f65c0825 SM |
684 | |
685 | /*********************/ | |
686 | /* spectral_scan_ctl */ | |
687 | /*********************/ | |
688 | ||
689 | static ssize_t read_file_spec_scan_ctl(struct file *file, char __user *user_buf, | |
690 | size_t count, loff_t *ppos) | |
691 | { | |
1111d426 | 692 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 SM |
693 | char *mode = ""; |
694 | unsigned int len; | |
695 | ||
1111d426 | 696 | switch (spec_priv->spectral_mode) { |
f65c0825 SM |
697 | case SPECTRAL_DISABLED: |
698 | mode = "disable"; | |
699 | break; | |
700 | case SPECTRAL_BACKGROUND: | |
701 | mode = "background"; | |
702 | break; | |
703 | case SPECTRAL_CHANSCAN: | |
704 | mode = "chanscan"; | |
705 | break; | |
706 | case SPECTRAL_MANUAL: | |
707 | mode = "manual"; | |
708 | break; | |
709 | } | |
710 | len = strlen(mode); | |
711 | return simple_read_from_buffer(user_buf, count, ppos, mode, len); | |
712 | } | |
713 | ||
67dc74f1 | 714 | void ath9k_cmn_spectral_scan_trigger(struct ath_common *common, |
f00a422c OR |
715 | struct ath_spec_scan_priv *spec_priv) |
716 | { | |
717 | struct ath_hw *ah = spec_priv->ah; | |
718 | u32 rxfilter; | |
719 | ||
97f2645f | 720 | if (IS_ENABLED(CONFIG_ATH9K_TX99)) |
f00a422c OR |
721 | return; |
722 | ||
723 | if (!ath9k_hw_ops(ah)->spectral_scan_trigger) { | |
724 | ath_err(common, "spectrum analyzer not implemented on this hardware\n"); | |
725 | return; | |
726 | } | |
727 | ||
45c3d550 ZK |
728 | if (!spec_priv->spec_config.enabled) |
729 | return; | |
730 | ||
f00a422c OR |
731 | ath_ps_ops(common)->wakeup(common); |
732 | rxfilter = ath9k_hw_getrxfilter(ah); | |
733 | ath9k_hw_setrxfilter(ah, rxfilter | | |
734 | ATH9K_RX_FILTER_PHYRADAR | | |
735 | ATH9K_RX_FILTER_PHYERR); | |
736 | ||
737 | /* TODO: usually this should not be neccesary, but for some reason | |
738 | * (or in some mode?) the trigger must be called after the | |
739 | * configuration, otherwise the register will have its values reset | |
740 | * (on my ar9220 to value 0x01002310) | |
741 | */ | |
67dc74f1 | 742 | ath9k_cmn_spectral_scan_config(common, spec_priv, spec_priv->spectral_mode); |
f00a422c OR |
743 | ath9k_hw_ops(ah)->spectral_scan_trigger(ah); |
744 | ath_ps_ops(common)->restore(common); | |
745 | } | |
67dc74f1 | 746 | EXPORT_SYMBOL(ath9k_cmn_spectral_scan_trigger); |
f00a422c | 747 | |
67dc74f1 | 748 | int ath9k_cmn_spectral_scan_config(struct ath_common *common, |
f00a422c OR |
749 | struct ath_spec_scan_priv *spec_priv, |
750 | enum spectral_mode spectral_mode) | |
751 | { | |
752 | struct ath_hw *ah = spec_priv->ah; | |
753 | ||
754 | if (!ath9k_hw_ops(ah)->spectral_scan_trigger) { | |
755 | ath_err(common, "spectrum analyzer not implemented on this hardware\n"); | |
756 | return -1; | |
757 | } | |
758 | ||
759 | switch (spectral_mode) { | |
760 | case SPECTRAL_DISABLED: | |
761 | spec_priv->spec_config.enabled = 0; | |
762 | break; | |
763 | case SPECTRAL_BACKGROUND: | |
764 | /* send endless samples. | |
765 | * TODO: is this really useful for "background"? | |
766 | */ | |
767 | spec_priv->spec_config.endless = 1; | |
768 | spec_priv->spec_config.enabled = 1; | |
769 | break; | |
770 | case SPECTRAL_CHANSCAN: | |
771 | case SPECTRAL_MANUAL: | |
772 | spec_priv->spec_config.endless = 0; | |
773 | spec_priv->spec_config.enabled = 1; | |
774 | break; | |
775 | default: | |
776 | return -1; | |
777 | } | |
778 | ||
779 | ath_ps_ops(common)->wakeup(common); | |
780 | ath9k_hw_ops(ah)->spectral_scan_config(ah, &spec_priv->spec_config); | |
781 | ath_ps_ops(common)->restore(common); | |
782 | ||
783 | spec_priv->spectral_mode = spectral_mode; | |
784 | ||
785 | return 0; | |
786 | } | |
67dc74f1 | 787 | EXPORT_SYMBOL(ath9k_cmn_spectral_scan_config); |
f00a422c | 788 | |
f65c0825 SM |
789 | static ssize_t write_file_spec_scan_ctl(struct file *file, |
790 | const char __user *user_buf, | |
791 | size_t count, loff_t *ppos) | |
792 | { | |
1111d426 OR |
793 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
794 | struct ath_common *common = ath9k_hw_common(spec_priv->ah); | |
f65c0825 SM |
795 | char buf[32]; |
796 | ssize_t len; | |
797 | ||
97f2645f | 798 | if (IS_ENABLED(CONFIG_ATH9K_TX99)) |
f65c0825 SM |
799 | return -EOPNOTSUPP; |
800 | ||
801 | len = min(count, sizeof(buf) - 1); | |
802 | if (copy_from_user(buf, user_buf, len)) | |
803 | return -EFAULT; | |
804 | ||
805 | buf[len] = '\0'; | |
806 | ||
807 | if (strncmp("trigger", buf, 7) == 0) { | |
67dc74f1 | 808 | ath9k_cmn_spectral_scan_trigger(common, spec_priv); |
ded3fb4c | 809 | } else if (strncmp("background", buf, 10) == 0) { |
67dc74f1 | 810 | ath9k_cmn_spectral_scan_config(common, spec_priv, SPECTRAL_BACKGROUND); |
f65c0825 SM |
811 | ath_dbg(common, CONFIG, "spectral scan: background mode enabled\n"); |
812 | } else if (strncmp("chanscan", buf, 8) == 0) { | |
67dc74f1 | 813 | ath9k_cmn_spectral_scan_config(common, spec_priv, SPECTRAL_CHANSCAN); |
f65c0825 SM |
814 | ath_dbg(common, CONFIG, "spectral scan: channel scan mode enabled\n"); |
815 | } else if (strncmp("manual", buf, 6) == 0) { | |
67dc74f1 | 816 | ath9k_cmn_spectral_scan_config(common, spec_priv, SPECTRAL_MANUAL); |
f65c0825 SM |
817 | ath_dbg(common, CONFIG, "spectral scan: manual mode enabled\n"); |
818 | } else if (strncmp("disable", buf, 7) == 0) { | |
67dc74f1 | 819 | ath9k_cmn_spectral_scan_config(common, spec_priv, SPECTRAL_DISABLED); |
f65c0825 SM |
820 | ath_dbg(common, CONFIG, "spectral scan: disabled\n"); |
821 | } else { | |
822 | return -EINVAL; | |
823 | } | |
824 | ||
825 | return count; | |
826 | } | |
827 | ||
828 | static const struct file_operations fops_spec_scan_ctl = { | |
829 | .read = read_file_spec_scan_ctl, | |
830 | .write = write_file_spec_scan_ctl, | |
831 | .open = simple_open, | |
832 | .owner = THIS_MODULE, | |
833 | .llseek = default_llseek, | |
834 | }; | |
835 | ||
836 | /*************************/ | |
837 | /* spectral_short_repeat */ | |
838 | /*************************/ | |
839 | ||
840 | static ssize_t read_file_spectral_short_repeat(struct file *file, | |
841 | char __user *user_buf, | |
842 | size_t count, loff_t *ppos) | |
843 | { | |
1111d426 | 844 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 SM |
845 | char buf[32]; |
846 | unsigned int len; | |
847 | ||
1111d426 | 848 | len = sprintf(buf, "%d\n", spec_priv->spec_config.short_repeat); |
f65c0825 SM |
849 | return simple_read_from_buffer(user_buf, count, ppos, buf, len); |
850 | } | |
851 | ||
852 | static ssize_t write_file_spectral_short_repeat(struct file *file, | |
853 | const char __user *user_buf, | |
854 | size_t count, loff_t *ppos) | |
855 | { | |
1111d426 | 856 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 | 857 | unsigned long val; |
8b804643 | 858 | ssize_t ret; |
f65c0825 | 859 | |
8b804643 DA |
860 | ret = kstrtoul_from_user(user_buf, count, 0, &val); |
861 | if (ret) | |
862 | return ret; | |
f65c0825 | 863 | |
3f557202 | 864 | if (val > 1) |
f65c0825 SM |
865 | return -EINVAL; |
866 | ||
1111d426 | 867 | spec_priv->spec_config.short_repeat = val; |
f65c0825 SM |
868 | return count; |
869 | } | |
870 | ||
871 | static const struct file_operations fops_spectral_short_repeat = { | |
872 | .read = read_file_spectral_short_repeat, | |
873 | .write = write_file_spectral_short_repeat, | |
874 | .open = simple_open, | |
875 | .owner = THIS_MODULE, | |
876 | .llseek = default_llseek, | |
877 | }; | |
878 | ||
879 | /******************/ | |
880 | /* spectral_count */ | |
881 | /******************/ | |
882 | ||
883 | static ssize_t read_file_spectral_count(struct file *file, | |
884 | char __user *user_buf, | |
885 | size_t count, loff_t *ppos) | |
886 | { | |
1111d426 | 887 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 SM |
888 | char buf[32]; |
889 | unsigned int len; | |
890 | ||
1111d426 | 891 | len = sprintf(buf, "%d\n", spec_priv->spec_config.count); |
f65c0825 SM |
892 | return simple_read_from_buffer(user_buf, count, ppos, buf, len); |
893 | } | |
894 | ||
895 | static ssize_t write_file_spectral_count(struct file *file, | |
896 | const char __user *user_buf, | |
897 | size_t count, loff_t *ppos) | |
898 | { | |
1111d426 | 899 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 | 900 | unsigned long val; |
8b804643 | 901 | ssize_t ret; |
f65c0825 | 902 | |
8b804643 DA |
903 | ret = kstrtoul_from_user(user_buf, count, 0, &val); |
904 | if (ret) | |
905 | return ret; | |
3f557202 | 906 | if (val > 255) |
f65c0825 SM |
907 | return -EINVAL; |
908 | ||
1111d426 | 909 | spec_priv->spec_config.count = val; |
f65c0825 SM |
910 | return count; |
911 | } | |
912 | ||
913 | static const struct file_operations fops_spectral_count = { | |
914 | .read = read_file_spectral_count, | |
915 | .write = write_file_spectral_count, | |
916 | .open = simple_open, | |
917 | .owner = THIS_MODULE, | |
918 | .llseek = default_llseek, | |
919 | }; | |
920 | ||
921 | /*******************/ | |
922 | /* spectral_period */ | |
923 | /*******************/ | |
924 | ||
925 | static ssize_t read_file_spectral_period(struct file *file, | |
926 | char __user *user_buf, | |
927 | size_t count, loff_t *ppos) | |
928 | { | |
1111d426 | 929 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 SM |
930 | char buf[32]; |
931 | unsigned int len; | |
932 | ||
1111d426 | 933 | len = sprintf(buf, "%d\n", spec_priv->spec_config.period); |
f65c0825 SM |
934 | return simple_read_from_buffer(user_buf, count, ppos, buf, len); |
935 | } | |
936 | ||
937 | static ssize_t write_file_spectral_period(struct file *file, | |
938 | const char __user *user_buf, | |
939 | size_t count, loff_t *ppos) | |
940 | { | |
1111d426 | 941 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 | 942 | unsigned long val; |
8b804643 | 943 | ssize_t ret; |
f65c0825 | 944 | |
8b804643 DA |
945 | ret = kstrtoul_from_user(user_buf, count, 0, &val); |
946 | if (ret) | |
947 | return ret; | |
f65c0825 | 948 | |
3f557202 | 949 | if (val > 255) |
f65c0825 SM |
950 | return -EINVAL; |
951 | ||
1111d426 | 952 | spec_priv->spec_config.period = val; |
f65c0825 SM |
953 | return count; |
954 | } | |
955 | ||
956 | static const struct file_operations fops_spectral_period = { | |
957 | .read = read_file_spectral_period, | |
958 | .write = write_file_spectral_period, | |
959 | .open = simple_open, | |
960 | .owner = THIS_MODULE, | |
961 | .llseek = default_llseek, | |
962 | }; | |
963 | ||
964 | /***********************/ | |
965 | /* spectral_fft_period */ | |
966 | /***********************/ | |
967 | ||
968 | static ssize_t read_file_spectral_fft_period(struct file *file, | |
969 | char __user *user_buf, | |
970 | size_t count, loff_t *ppos) | |
971 | { | |
1111d426 | 972 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 SM |
973 | char buf[32]; |
974 | unsigned int len; | |
975 | ||
1111d426 | 976 | len = sprintf(buf, "%d\n", spec_priv->spec_config.fft_period); |
f65c0825 SM |
977 | return simple_read_from_buffer(user_buf, count, ppos, buf, len); |
978 | } | |
979 | ||
980 | static ssize_t write_file_spectral_fft_period(struct file *file, | |
981 | const char __user *user_buf, | |
982 | size_t count, loff_t *ppos) | |
983 | { | |
1111d426 | 984 | struct ath_spec_scan_priv *spec_priv = file->private_data; |
f65c0825 | 985 | unsigned long val; |
8b804643 | 986 | ssize_t ret; |
f65c0825 | 987 | |
8b804643 DA |
988 | ret = kstrtoul_from_user(user_buf, count, 0, &val); |
989 | if (ret) | |
990 | return ret; | |
f65c0825 | 991 | |
3f557202 | 992 | if (val > 15) |
f65c0825 SM |
993 | return -EINVAL; |
994 | ||
1111d426 | 995 | spec_priv->spec_config.fft_period = val; |
f65c0825 SM |
996 | return count; |
997 | } | |
998 | ||
999 | static const struct file_operations fops_spectral_fft_period = { | |
1000 | .read = read_file_spectral_fft_period, | |
1001 | .write = write_file_spectral_fft_period, | |
1002 | .open = simple_open, | |
1003 | .owner = THIS_MODULE, | |
1004 | .llseek = default_llseek, | |
1005 | }; | |
1006 | ||
1007 | /*******************/ | |
1008 | /* Relay interface */ | |
1009 | /*******************/ | |
1010 | ||
1011 | static struct dentry *create_buf_file_handler(const char *filename, | |
1012 | struct dentry *parent, | |
1013 | umode_t mode, | |
1014 | struct rchan_buf *buf, | |
1015 | int *is_global) | |
1016 | { | |
1017 | struct dentry *buf_file; | |
1018 | ||
1019 | buf_file = debugfs_create_file(filename, mode, parent, buf, | |
1020 | &relay_file_operations); | |
cd98625b GKH |
1021 | if (IS_ERR(buf_file)) |
1022 | return NULL; | |
1023 | ||
f65c0825 SM |
1024 | *is_global = 1; |
1025 | return buf_file; | |
1026 | } | |
1027 | ||
1028 | static int remove_buf_file_handler(struct dentry *dentry) | |
1029 | { | |
1030 | debugfs_remove(dentry); | |
1031 | ||
1032 | return 0; | |
1033 | } | |
1034 | ||
1bf9c2e8 | 1035 | static const struct rchan_callbacks rfs_spec_scan_cb = { |
f65c0825 SM |
1036 | .create_buf_file = create_buf_file_handler, |
1037 | .remove_buf_file = remove_buf_file_handler, | |
1038 | }; | |
1039 | ||
1040 | /*********************/ | |
1041 | /* Debug Init/Deinit */ | |
1042 | /*********************/ | |
1043 | ||
67dc74f1 | 1044 | void ath9k_cmn_spectral_deinit_debug(struct ath_spec_scan_priv *spec_priv) |
f65c0825 | 1045 | { |
1077ec47 | 1046 | if (spec_priv->rfs_chan_spec_scan) { |
1111d426 OR |
1047 | relay_close(spec_priv->rfs_chan_spec_scan); |
1048 | spec_priv->rfs_chan_spec_scan = NULL; | |
f65c0825 SM |
1049 | } |
1050 | } | |
67dc74f1 | 1051 | EXPORT_SYMBOL(ath9k_cmn_spectral_deinit_debug); |
f65c0825 | 1052 | |
67dc74f1 OR |
1053 | void ath9k_cmn_spectral_init_debug(struct ath_spec_scan_priv *spec_priv, |
1054 | struct dentry *debugfs_phy) | |
f65c0825 | 1055 | { |
1111d426 | 1056 | spec_priv->rfs_chan_spec_scan = relay_open("spectral_scan", |
c10b75af | 1057 | debugfs_phy, |
f65c0825 SM |
1058 | 1024, 256, &rfs_spec_scan_cb, |
1059 | NULL); | |
40bea976 MP |
1060 | if (!spec_priv->rfs_chan_spec_scan) |
1061 | return; | |
1062 | ||
f65c0825 | 1063 | debugfs_create_file("spectral_scan_ctl", |
2ef00c53 | 1064 | 0600, |
1111d426 | 1065 | debugfs_phy, spec_priv, |
f65c0825 SM |
1066 | &fops_spec_scan_ctl); |
1067 | debugfs_create_file("spectral_short_repeat", | |
2ef00c53 | 1068 | 0600, |
1111d426 | 1069 | debugfs_phy, spec_priv, |
f65c0825 SM |
1070 | &fops_spectral_short_repeat); |
1071 | debugfs_create_file("spectral_count", | |
2ef00c53 | 1072 | 0600, |
1111d426 | 1073 | debugfs_phy, spec_priv, |
f65c0825 SM |
1074 | &fops_spectral_count); |
1075 | debugfs_create_file("spectral_period", | |
2ef00c53 | 1076 | 0600, |
1111d426 | 1077 | debugfs_phy, spec_priv, |
f65c0825 SM |
1078 | &fops_spectral_period); |
1079 | debugfs_create_file("spectral_fft_period", | |
2ef00c53 | 1080 | 0600, |
1111d426 | 1081 | debugfs_phy, spec_priv, |
f65c0825 SM |
1082 | &fops_spectral_fft_period); |
1083 | } | |
67dc74f1 | 1084 | EXPORT_SYMBOL(ath9k_cmn_spectral_init_debug); |