Commit | Line | Data |
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55624204 S |
1 | /* |
2 | * Copyright (c) 2008-2009 Atheros Communications 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 | ||
5a0e3ad6 TH |
17 | #include <linux/slab.h> |
18 | ||
55624204 S |
19 | #include "ath9k.h" |
20 | ||
21 | static char *dev_info = "ath9k"; | |
22 | ||
23 | MODULE_AUTHOR("Atheros Communications"); | |
24 | MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); | |
25 | MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); | |
26 | MODULE_LICENSE("Dual BSD/GPL"); | |
27 | ||
28 | static unsigned int ath9k_debug = ATH_DBG_DEFAULT; | |
29 | module_param_named(debug, ath9k_debug, uint, 0); | |
30 | MODULE_PARM_DESC(debug, "Debugging mask"); | |
31 | ||
32 | int modparam_nohwcrypt; | |
33 | module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444); | |
34 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); | |
35 | ||
93dbbcc4 | 36 | int led_blink; |
9a75c2ff VN |
37 | module_param_named(blink, led_blink, int, 0444); |
38 | MODULE_PARM_DESC(blink, "Enable LED blink on activity"); | |
39 | ||
55624204 S |
40 | /* We use the hw_value as an index into our private channel structure */ |
41 | ||
42 | #define CHAN2G(_freq, _idx) { \ | |
43 | .center_freq = (_freq), \ | |
44 | .hw_value = (_idx), \ | |
45 | .max_power = 20, \ | |
46 | } | |
47 | ||
48 | #define CHAN5G(_freq, _idx) { \ | |
49 | .band = IEEE80211_BAND_5GHZ, \ | |
50 | .center_freq = (_freq), \ | |
51 | .hw_value = (_idx), \ | |
52 | .max_power = 20, \ | |
53 | } | |
54 | ||
55 | /* Some 2 GHz radios are actually tunable on 2312-2732 | |
56 | * on 5 MHz steps, we support the channels which we know | |
57 | * we have calibration data for all cards though to make | |
58 | * this static */ | |
f209f529 | 59 | static const struct ieee80211_channel ath9k_2ghz_chantable[] = { |
55624204 S |
60 | CHAN2G(2412, 0), /* Channel 1 */ |
61 | CHAN2G(2417, 1), /* Channel 2 */ | |
62 | CHAN2G(2422, 2), /* Channel 3 */ | |
63 | CHAN2G(2427, 3), /* Channel 4 */ | |
64 | CHAN2G(2432, 4), /* Channel 5 */ | |
65 | CHAN2G(2437, 5), /* Channel 6 */ | |
66 | CHAN2G(2442, 6), /* Channel 7 */ | |
67 | CHAN2G(2447, 7), /* Channel 8 */ | |
68 | CHAN2G(2452, 8), /* Channel 9 */ | |
69 | CHAN2G(2457, 9), /* Channel 10 */ | |
70 | CHAN2G(2462, 10), /* Channel 11 */ | |
71 | CHAN2G(2467, 11), /* Channel 12 */ | |
72 | CHAN2G(2472, 12), /* Channel 13 */ | |
73 | CHAN2G(2484, 13), /* Channel 14 */ | |
74 | }; | |
75 | ||
76 | /* Some 5 GHz radios are actually tunable on XXXX-YYYY | |
77 | * on 5 MHz steps, we support the channels which we know | |
78 | * we have calibration data for all cards though to make | |
79 | * this static */ | |
f209f529 | 80 | static const struct ieee80211_channel ath9k_5ghz_chantable[] = { |
55624204 S |
81 | /* _We_ call this UNII 1 */ |
82 | CHAN5G(5180, 14), /* Channel 36 */ | |
83 | CHAN5G(5200, 15), /* Channel 40 */ | |
84 | CHAN5G(5220, 16), /* Channel 44 */ | |
85 | CHAN5G(5240, 17), /* Channel 48 */ | |
86 | /* _We_ call this UNII 2 */ | |
87 | CHAN5G(5260, 18), /* Channel 52 */ | |
88 | CHAN5G(5280, 19), /* Channel 56 */ | |
89 | CHAN5G(5300, 20), /* Channel 60 */ | |
90 | CHAN5G(5320, 21), /* Channel 64 */ | |
91 | /* _We_ call this "Middle band" */ | |
92 | CHAN5G(5500, 22), /* Channel 100 */ | |
93 | CHAN5G(5520, 23), /* Channel 104 */ | |
94 | CHAN5G(5540, 24), /* Channel 108 */ | |
95 | CHAN5G(5560, 25), /* Channel 112 */ | |
96 | CHAN5G(5580, 26), /* Channel 116 */ | |
97 | CHAN5G(5600, 27), /* Channel 120 */ | |
98 | CHAN5G(5620, 28), /* Channel 124 */ | |
99 | CHAN5G(5640, 29), /* Channel 128 */ | |
100 | CHAN5G(5660, 30), /* Channel 132 */ | |
101 | CHAN5G(5680, 31), /* Channel 136 */ | |
102 | CHAN5G(5700, 32), /* Channel 140 */ | |
103 | /* _We_ call this UNII 3 */ | |
104 | CHAN5G(5745, 33), /* Channel 149 */ | |
105 | CHAN5G(5765, 34), /* Channel 153 */ | |
106 | CHAN5G(5785, 35), /* Channel 157 */ | |
107 | CHAN5G(5805, 36), /* Channel 161 */ | |
108 | CHAN5G(5825, 37), /* Channel 165 */ | |
109 | }; | |
110 | ||
111 | /* Atheros hardware rate code addition for short premble */ | |
112 | #define SHPCHECK(__hw_rate, __flags) \ | |
113 | ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0) | |
114 | ||
115 | #define RATE(_bitrate, _hw_rate, _flags) { \ | |
116 | .bitrate = (_bitrate), \ | |
117 | .flags = (_flags), \ | |
118 | .hw_value = (_hw_rate), \ | |
119 | .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \ | |
120 | } | |
121 | ||
122 | static struct ieee80211_rate ath9k_legacy_rates[] = { | |
123 | RATE(10, 0x1b, 0), | |
124 | RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), | |
125 | RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), | |
126 | RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), | |
127 | RATE(60, 0x0b, 0), | |
128 | RATE(90, 0x0f, 0), | |
129 | RATE(120, 0x0a, 0), | |
130 | RATE(180, 0x0e, 0), | |
131 | RATE(240, 0x09, 0), | |
132 | RATE(360, 0x0d, 0), | |
133 | RATE(480, 0x08, 0), | |
134 | RATE(540, 0x0c, 0), | |
135 | }; | |
136 | ||
285f2dda | 137 | static void ath9k_deinit_softc(struct ath_softc *sc); |
55624204 S |
138 | |
139 | /* | |
140 | * Read and write, they both share the same lock. We do this to serialize | |
141 | * reads and writes on Atheros 802.11n PCI devices only. This is required | |
142 | * as the FIFO on these devices can only accept sanely 2 requests. | |
143 | */ | |
144 | ||
145 | static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) | |
146 | { | |
147 | struct ath_hw *ah = (struct ath_hw *) hw_priv; | |
148 | struct ath_common *common = ath9k_hw_common(ah); | |
149 | struct ath_softc *sc = (struct ath_softc *) common->priv; | |
150 | ||
151 | if (ah->config.serialize_regmode == SER_REG_MODE_ON) { | |
152 | unsigned long flags; | |
153 | spin_lock_irqsave(&sc->sc_serial_rw, flags); | |
154 | iowrite32(val, sc->mem + reg_offset); | |
155 | spin_unlock_irqrestore(&sc->sc_serial_rw, flags); | |
156 | } else | |
157 | iowrite32(val, sc->mem + reg_offset); | |
158 | } | |
159 | ||
160 | static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset) | |
161 | { | |
162 | struct ath_hw *ah = (struct ath_hw *) hw_priv; | |
163 | struct ath_common *common = ath9k_hw_common(ah); | |
164 | struct ath_softc *sc = (struct ath_softc *) common->priv; | |
165 | u32 val; | |
166 | ||
167 | if (ah->config.serialize_regmode == SER_REG_MODE_ON) { | |
168 | unsigned long flags; | |
169 | spin_lock_irqsave(&sc->sc_serial_rw, flags); | |
170 | val = ioread32(sc->mem + reg_offset); | |
171 | spin_unlock_irqrestore(&sc->sc_serial_rw, flags); | |
172 | } else | |
173 | val = ioread32(sc->mem + reg_offset); | |
174 | return val; | |
175 | } | |
176 | ||
177 | static const struct ath_ops ath9k_common_ops = { | |
178 | .read = ath9k_ioread32, | |
179 | .write = ath9k_iowrite32, | |
180 | }; | |
181 | ||
182 | /**************************/ | |
183 | /* Initialization */ | |
184 | /**************************/ | |
185 | ||
186 | static void setup_ht_cap(struct ath_softc *sc, | |
187 | struct ieee80211_sta_ht_cap *ht_info) | |
188 | { | |
3bb065a7 FF |
189 | struct ath_hw *ah = sc->sc_ah; |
190 | struct ath_common *common = ath9k_hw_common(ah); | |
55624204 | 191 | u8 tx_streams, rx_streams; |
3bb065a7 | 192 | int i, max_streams; |
55624204 S |
193 | |
194 | ht_info->ht_supported = true; | |
195 | ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
196 | IEEE80211_HT_CAP_SM_PS | | |
197 | IEEE80211_HT_CAP_SGI_40 | | |
198 | IEEE80211_HT_CAP_DSSSCCK40; | |
199 | ||
b0a33448 LR |
200 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_LDPC) |
201 | ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING; | |
202 | ||
6473d24d VT |
203 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20) |
204 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; | |
205 | ||
55624204 S |
206 | ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; |
207 | ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; | |
208 | ||
3bb065a7 FF |
209 | if (AR_SREV_9300_20_OR_LATER(ah)) |
210 | max_streams = 3; | |
211 | else | |
212 | max_streams = 2; | |
213 | ||
7a37081e | 214 | if (AR_SREV_9280_20_OR_LATER(ah)) { |
074a8c0d FF |
215 | if (max_streams >= 2) |
216 | ht_info->cap |= IEEE80211_HT_CAP_TX_STBC; | |
217 | ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); | |
218 | } | |
219 | ||
55624204 S |
220 | /* set up supported mcs set */ |
221 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); | |
61389f3e S |
222 | tx_streams = ath9k_cmn_count_streams(common->tx_chainmask, max_streams); |
223 | rx_streams = ath9k_cmn_count_streams(common->rx_chainmask, max_streams); | |
3bb065a7 FF |
224 | |
225 | ath_print(common, ATH_DBG_CONFIG, | |
226 | "TX streams %d, RX streams: %d\n", | |
227 | tx_streams, rx_streams); | |
55624204 S |
228 | |
229 | if (tx_streams != rx_streams) { | |
55624204 S |
230 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
231 | ht_info->mcs.tx_params |= ((tx_streams - 1) << | |
232 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); | |
233 | } | |
234 | ||
3bb065a7 FF |
235 | for (i = 0; i < rx_streams; i++) |
236 | ht_info->mcs.rx_mask[i] = 0xff; | |
55624204 S |
237 | |
238 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; | |
239 | } | |
240 | ||
241 | static int ath9k_reg_notifier(struct wiphy *wiphy, | |
242 | struct regulatory_request *request) | |
243 | { | |
244 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
245 | struct ath_wiphy *aphy = hw->priv; | |
246 | struct ath_softc *sc = aphy->sc; | |
247 | struct ath_regulatory *reg = ath9k_hw_regulatory(sc->sc_ah); | |
248 | ||
249 | return ath_reg_notifier_apply(wiphy, request, reg); | |
250 | } | |
251 | ||
252 | /* | |
253 | * This function will allocate both the DMA descriptor structure, and the | |
254 | * buffers it contains. These are used to contain the descriptors used | |
255 | * by the system. | |
256 | */ | |
257 | int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, | |
258 | struct list_head *head, const char *name, | |
4adfcded | 259 | int nbuf, int ndesc, bool is_tx) |
55624204 S |
260 | { |
261 | #define DS2PHYS(_dd, _ds) \ | |
262 | ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) | |
263 | #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0) | |
264 | #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096) | |
265 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
4adfcded | 266 | u8 *ds; |
55624204 | 267 | struct ath_buf *bf; |
4adfcded | 268 | int i, bsize, error, desc_len; |
55624204 S |
269 | |
270 | ath_print(common, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n", | |
271 | name, nbuf, ndesc); | |
272 | ||
273 | INIT_LIST_HEAD(head); | |
4adfcded VT |
274 | |
275 | if (is_tx) | |
276 | desc_len = sc->sc_ah->caps.tx_desc_len; | |
277 | else | |
278 | desc_len = sizeof(struct ath_desc); | |
279 | ||
55624204 | 280 | /* ath_desc must be a multiple of DWORDs */ |
4adfcded | 281 | if ((desc_len % 4) != 0) { |
55624204 S |
282 | ath_print(common, ATH_DBG_FATAL, |
283 | "ath_desc not DWORD aligned\n"); | |
4adfcded | 284 | BUG_ON((desc_len % 4) != 0); |
55624204 S |
285 | error = -ENOMEM; |
286 | goto fail; | |
287 | } | |
288 | ||
4adfcded | 289 | dd->dd_desc_len = desc_len * nbuf * ndesc; |
55624204 S |
290 | |
291 | /* | |
292 | * Need additional DMA memory because we can't use | |
293 | * descriptors that cross the 4K page boundary. Assume | |
294 | * one skipped descriptor per 4K page. | |
295 | */ | |
296 | if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { | |
297 | u32 ndesc_skipped = | |
298 | ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); | |
299 | u32 dma_len; | |
300 | ||
301 | while (ndesc_skipped) { | |
4adfcded | 302 | dma_len = ndesc_skipped * desc_len; |
55624204 S |
303 | dd->dd_desc_len += dma_len; |
304 | ||
305 | ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); | |
ee289b64 | 306 | } |
55624204 S |
307 | } |
308 | ||
309 | /* allocate descriptors */ | |
310 | dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len, | |
311 | &dd->dd_desc_paddr, GFP_KERNEL); | |
312 | if (dd->dd_desc == NULL) { | |
313 | error = -ENOMEM; | |
314 | goto fail; | |
315 | } | |
4adfcded | 316 | ds = (u8 *) dd->dd_desc; |
55624204 S |
317 | ath_print(common, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", |
318 | name, ds, (u32) dd->dd_desc_len, | |
319 | ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); | |
320 | ||
321 | /* allocate buffers */ | |
322 | bsize = sizeof(struct ath_buf) * nbuf; | |
323 | bf = kzalloc(bsize, GFP_KERNEL); | |
324 | if (bf == NULL) { | |
325 | error = -ENOMEM; | |
326 | goto fail2; | |
327 | } | |
328 | dd->dd_bufptr = bf; | |
329 | ||
4adfcded | 330 | for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { |
55624204 S |
331 | bf->bf_desc = ds; |
332 | bf->bf_daddr = DS2PHYS(dd, ds); | |
333 | ||
334 | if (!(sc->sc_ah->caps.hw_caps & | |
335 | ATH9K_HW_CAP_4KB_SPLITTRANS)) { | |
336 | /* | |
337 | * Skip descriptor addresses which can cause 4KB | |
338 | * boundary crossing (addr + length) with a 32 dword | |
339 | * descriptor fetch. | |
340 | */ | |
341 | while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { | |
342 | BUG_ON((caddr_t) bf->bf_desc >= | |
343 | ((caddr_t) dd->dd_desc + | |
344 | dd->dd_desc_len)); | |
345 | ||
4adfcded | 346 | ds += (desc_len * ndesc); |
55624204 S |
347 | bf->bf_desc = ds; |
348 | bf->bf_daddr = DS2PHYS(dd, ds); | |
349 | } | |
350 | } | |
351 | list_add_tail(&bf->list, head); | |
352 | } | |
353 | return 0; | |
354 | fail2: | |
355 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, | |
356 | dd->dd_desc_paddr); | |
357 | fail: | |
358 | memset(dd, 0, sizeof(*dd)); | |
359 | return error; | |
360 | #undef ATH_DESC_4KB_BOUND_CHECK | |
361 | #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED | |
362 | #undef DS2PHYS | |
363 | } | |
364 | ||
285f2dda | 365 | static void ath9k_init_crypto(struct ath_softc *sc) |
55624204 | 366 | { |
285f2dda S |
367 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
368 | int i = 0; | |
55624204 S |
369 | |
370 | /* Get the hardware key cache size. */ | |
285f2dda | 371 | common->keymax = sc->sc_ah->caps.keycache_size; |
55624204 S |
372 | if (common->keymax > ATH_KEYMAX) { |
373 | ath_print(common, ATH_DBG_ANY, | |
374 | "Warning, using only %u entries in %u key cache\n", | |
375 | ATH_KEYMAX, common->keymax); | |
376 | common->keymax = ATH_KEYMAX; | |
377 | } | |
378 | ||
379 | /* | |
380 | * Reset the key cache since some parts do not | |
381 | * reset the contents on initial power up. | |
382 | */ | |
383 | for (i = 0; i < common->keymax; i++) | |
040e539e | 384 | ath_hw_keyreset(common, (u16) i); |
55624204 | 385 | |
55624204 | 386 | /* |
285f2dda S |
387 | * Check whether the separate key cache entries |
388 | * are required to handle both tx+rx MIC keys. | |
389 | * With split mic keys the number of stations is limited | |
390 | * to 27 otherwise 59. | |
55624204 | 391 | */ |
117675d0 BR |
392 | if (sc->sc_ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA) |
393 | common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED; | |
285f2dda S |
394 | } |
395 | ||
396 | static int ath9k_init_btcoex(struct ath_softc *sc) | |
397 | { | |
398 | int r, qnum; | |
399 | ||
400 | switch (sc->sc_ah->btcoex_hw.scheme) { | |
401 | case ATH_BTCOEX_CFG_NONE: | |
402 | break; | |
403 | case ATH_BTCOEX_CFG_2WIRE: | |
404 | ath9k_hw_btcoex_init_2wire(sc->sc_ah); | |
405 | break; | |
406 | case ATH_BTCOEX_CFG_3WIRE: | |
407 | ath9k_hw_btcoex_init_3wire(sc->sc_ah); | |
408 | r = ath_init_btcoex_timer(sc); | |
409 | if (r) | |
410 | return -1; | |
1d2231e2 | 411 | qnum = sc->tx.hwq_map[WME_AC_BE]; |
285f2dda S |
412 | ath9k_hw_init_btcoex_hw(sc->sc_ah, qnum); |
413 | sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; | |
414 | break; | |
415 | default: | |
416 | WARN_ON(1); | |
417 | break; | |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | static int ath9k_init_queues(struct ath_softc *sc) | |
424 | { | |
425 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
426 | int i = 0; | |
427 | ||
428 | for (i = 0; i < ARRAY_SIZE(sc->tx.hwq_map); i++) | |
429 | sc->tx.hwq_map[i] = -1; | |
430 | ||
431 | sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah); | |
55624204 S |
432 | if (sc->beacon.beaconq == -1) { |
433 | ath_print(common, ATH_DBG_FATAL, | |
434 | "Unable to setup a beacon xmit queue\n"); | |
285f2dda | 435 | goto err; |
55624204 | 436 | } |
285f2dda | 437 | |
55624204 S |
438 | sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); |
439 | if (sc->beacon.cabq == NULL) { | |
440 | ath_print(common, ATH_DBG_FATAL, | |
441 | "Unable to setup CAB xmit queue\n"); | |
285f2dda | 442 | goto err; |
55624204 S |
443 | } |
444 | ||
445 | sc->config.cabqReadytime = ATH_CABQ_READY_TIME; | |
446 | ath_cabq_update(sc); | |
447 | ||
1d2231e2 | 448 | if (!ath_tx_setup(sc, WME_AC_BK)) { |
55624204 S |
449 | ath_print(common, ATH_DBG_FATAL, |
450 | "Unable to setup xmit queue for BK traffic\n"); | |
285f2dda | 451 | goto err; |
55624204 S |
452 | } |
453 | ||
1d2231e2 | 454 | if (!ath_tx_setup(sc, WME_AC_BE)) { |
55624204 S |
455 | ath_print(common, ATH_DBG_FATAL, |
456 | "Unable to setup xmit queue for BE traffic\n"); | |
285f2dda | 457 | goto err; |
55624204 | 458 | } |
1d2231e2 | 459 | if (!ath_tx_setup(sc, WME_AC_VI)) { |
55624204 S |
460 | ath_print(common, ATH_DBG_FATAL, |
461 | "Unable to setup xmit queue for VI traffic\n"); | |
285f2dda | 462 | goto err; |
55624204 | 463 | } |
1d2231e2 | 464 | if (!ath_tx_setup(sc, WME_AC_VO)) { |
55624204 S |
465 | ath_print(common, ATH_DBG_FATAL, |
466 | "Unable to setup xmit queue for VO traffic\n"); | |
285f2dda | 467 | goto err; |
55624204 S |
468 | } |
469 | ||
285f2dda | 470 | return 0; |
55624204 | 471 | |
285f2dda S |
472 | err: |
473 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) | |
474 | if (ATH_TXQ_SETUP(sc, i)) | |
475 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
55624204 | 476 | |
285f2dda S |
477 | return -EIO; |
478 | } | |
479 | ||
f209f529 | 480 | static int ath9k_init_channels_rates(struct ath_softc *sc) |
285f2dda | 481 | { |
f209f529 FF |
482 | void *channels; |
483 | ||
cac4220b FF |
484 | BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) + |
485 | ARRAY_SIZE(ath9k_5ghz_chantable) != | |
486 | ATH9K_NUM_CHANNELS); | |
487 | ||
d4659912 | 488 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) { |
f209f529 FF |
489 | channels = kmemdup(ath9k_2ghz_chantable, |
490 | sizeof(ath9k_2ghz_chantable), GFP_KERNEL); | |
491 | if (!channels) | |
492 | return -ENOMEM; | |
493 | ||
494 | sc->sbands[IEEE80211_BAND_2GHZ].channels = channels; | |
285f2dda S |
495 | sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; |
496 | sc->sbands[IEEE80211_BAND_2GHZ].n_channels = | |
497 | ARRAY_SIZE(ath9k_2ghz_chantable); | |
498 | sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates; | |
499 | sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates = | |
500 | ARRAY_SIZE(ath9k_legacy_rates); | |
55624204 S |
501 | } |
502 | ||
d4659912 | 503 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) { |
f209f529 FF |
504 | channels = kmemdup(ath9k_5ghz_chantable, |
505 | sizeof(ath9k_5ghz_chantable), GFP_KERNEL); | |
506 | if (!channels) { | |
507 | if (sc->sbands[IEEE80211_BAND_2GHZ].channels) | |
508 | kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels); | |
509 | return -ENOMEM; | |
510 | } | |
511 | ||
512 | sc->sbands[IEEE80211_BAND_5GHZ].channels = channels; | |
285f2dda S |
513 | sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; |
514 | sc->sbands[IEEE80211_BAND_5GHZ].n_channels = | |
515 | ARRAY_SIZE(ath9k_5ghz_chantable); | |
516 | sc->sbands[IEEE80211_BAND_5GHZ].bitrates = | |
517 | ath9k_legacy_rates + 4; | |
518 | sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates = | |
519 | ARRAY_SIZE(ath9k_legacy_rates) - 4; | |
520 | } | |
f209f529 | 521 | return 0; |
285f2dda | 522 | } |
55624204 | 523 | |
285f2dda S |
524 | static void ath9k_init_misc(struct ath_softc *sc) |
525 | { | |
526 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
527 | int i = 0; | |
528 | ||
285f2dda | 529 | setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc); |
55624204 S |
530 | |
531 | sc->config.txpowlimit = ATH_TXPOWER_MAX; | |
532 | ||
285f2dda | 533 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { |
55624204 S |
534 | sc->sc_flags |= SC_OP_TXAGGR; |
535 | sc->sc_flags |= SC_OP_RXAGGR; | |
536 | } | |
537 | ||
285f2dda S |
538 | common->tx_chainmask = sc->sc_ah->caps.tx_chainmask; |
539 | common->rx_chainmask = sc->sc_ah->caps.rx_chainmask; | |
55624204 | 540 | |
8fe65368 | 541 | ath9k_hw_set_diversity(sc->sc_ah, true); |
285f2dda | 542 | sc->rx.defant = ath9k_hw_getdefantenna(sc->sc_ah); |
55624204 | 543 | |
364734fa | 544 | memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN); |
55624204 | 545 | |
285f2dda | 546 | sc->beacon.slottime = ATH9K_SLOT_TIME_9; |
55624204 | 547 | |
55624204 S |
548 | for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) { |
549 | sc->beacon.bslot[i] = NULL; | |
550 | sc->beacon.bslot_aphy[i] = NULL; | |
551 | } | |
102885a5 VT |
552 | |
553 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) | |
554 | sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT; | |
285f2dda | 555 | } |
55624204 | 556 | |
285f2dda S |
557 | static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid, |
558 | const struct ath_bus_ops *bus_ops) | |
559 | { | |
560 | struct ath_hw *ah = NULL; | |
561 | struct ath_common *common; | |
562 | int ret = 0, i; | |
563 | int csz = 0; | |
55624204 | 564 | |
285f2dda S |
565 | ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL); |
566 | if (!ah) | |
567 | return -ENOMEM; | |
568 | ||
569 | ah->hw_version.devid = devid; | |
570 | ah->hw_version.subsysid = subsysid; | |
571 | sc->sc_ah = ah; | |
572 | ||
573 | common = ath9k_hw_common(ah); | |
574 | common->ops = &ath9k_common_ops; | |
575 | common->bus_ops = bus_ops; | |
576 | common->ah = ah; | |
577 | common->hw = sc->hw; | |
578 | common->priv = sc; | |
579 | common->debug_mask = ath9k_debug; | |
20b25744 | 580 | spin_lock_init(&common->cc_lock); |
285f2dda S |
581 | |
582 | spin_lock_init(&sc->wiphy_lock); | |
285f2dda S |
583 | spin_lock_init(&sc->sc_serial_rw); |
584 | spin_lock_init(&sc->sc_pm_lock); | |
585 | mutex_init(&sc->mutex); | |
586 | tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); | |
587 | tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet, | |
588 | (unsigned long)sc); | |
589 | ||
590 | /* | |
591 | * Cache line size is used to size and align various | |
592 | * structures used to communicate with the hardware. | |
593 | */ | |
594 | ath_read_cachesize(common, &csz); | |
595 | common->cachelsz = csz << 2; /* convert to bytes */ | |
596 | ||
d70357d5 | 597 | /* Initializes the hardware for all supported chipsets */ |
285f2dda | 598 | ret = ath9k_hw_init(ah); |
d70357d5 | 599 | if (ret) |
285f2dda | 600 | goto err_hw; |
55624204 | 601 | |
285f2dda S |
602 | ret = ath9k_init_debug(ah); |
603 | if (ret) { | |
604 | ath_print(common, ATH_DBG_FATAL, | |
605 | "Unable to create debugfs files\n"); | |
606 | goto err_debug; | |
55624204 S |
607 | } |
608 | ||
285f2dda S |
609 | ret = ath9k_init_queues(sc); |
610 | if (ret) | |
611 | goto err_queues; | |
612 | ||
613 | ret = ath9k_init_btcoex(sc); | |
614 | if (ret) | |
615 | goto err_btcoex; | |
616 | ||
f209f529 FF |
617 | ret = ath9k_init_channels_rates(sc); |
618 | if (ret) | |
619 | goto err_btcoex; | |
620 | ||
285f2dda | 621 | ath9k_init_crypto(sc); |
285f2dda S |
622 | ath9k_init_misc(sc); |
623 | ||
55624204 | 624 | return 0; |
285f2dda S |
625 | |
626 | err_btcoex: | |
55624204 S |
627 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) |
628 | if (ATH_TXQ_SETUP(sc, i)) | |
629 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
285f2dda S |
630 | err_queues: |
631 | ath9k_exit_debug(ah); | |
632 | err_debug: | |
633 | ath9k_hw_deinit(ah); | |
634 | err_hw: | |
635 | tasklet_kill(&sc->intr_tq); | |
636 | tasklet_kill(&sc->bcon_tasklet); | |
55624204 | 637 | |
285f2dda S |
638 | kfree(ah); |
639 | sc->sc_ah = NULL; | |
640 | ||
641 | return ret; | |
55624204 S |
642 | } |
643 | ||
babcbc29 FF |
644 | static void ath9k_init_band_txpower(struct ath_softc *sc, int band) |
645 | { | |
646 | struct ieee80211_supported_band *sband; | |
647 | struct ieee80211_channel *chan; | |
648 | struct ath_hw *ah = sc->sc_ah; | |
649 | struct ath_regulatory *reg = ath9k_hw_regulatory(ah); | |
650 | int i; | |
651 | ||
652 | sband = &sc->sbands[band]; | |
653 | for (i = 0; i < sband->n_channels; i++) { | |
654 | chan = &sband->channels[i]; | |
655 | ah->curchan = &ah->channels[chan->hw_value]; | |
656 | ath9k_cmn_update_ichannel(ah->curchan, chan, NL80211_CHAN_HT20); | |
657 | ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true); | |
658 | chan->max_power = reg->max_power_level / 2; | |
659 | } | |
660 | } | |
661 | ||
662 | static void ath9k_init_txpower_limits(struct ath_softc *sc) | |
663 | { | |
664 | struct ath_hw *ah = sc->sc_ah; | |
665 | struct ath9k_channel *curchan = ah->curchan; | |
666 | ||
667 | if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) | |
668 | ath9k_init_band_txpower(sc, IEEE80211_BAND_2GHZ); | |
669 | if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) | |
670 | ath9k_init_band_txpower(sc, IEEE80211_BAND_5GHZ); | |
671 | ||
672 | ah->curchan = curchan; | |
673 | } | |
674 | ||
285f2dda | 675 | void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) |
55624204 | 676 | { |
285f2dda S |
677 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
678 | ||
55624204 S |
679 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
680 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | | |
681 | IEEE80211_HW_SIGNAL_DBM | | |
55624204 S |
682 | IEEE80211_HW_SUPPORTS_PS | |
683 | IEEE80211_HW_PS_NULLFUNC_STACK | | |
05df4986 VN |
684 | IEEE80211_HW_SPECTRUM_MGMT | |
685 | IEEE80211_HW_REPORTS_TX_ACK_STATUS; | |
55624204 | 686 | |
5ffaf8a3 LR |
687 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) |
688 | hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; | |
689 | ||
55624204 S |
690 | if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || modparam_nohwcrypt) |
691 | hw->flags |= IEEE80211_HW_MFP_CAPABLE; | |
692 | ||
693 | hw->wiphy->interface_modes = | |
694 | BIT(NL80211_IFTYPE_AP) | | |
e51f3eff | 695 | BIT(NL80211_IFTYPE_WDS) | |
55624204 S |
696 | BIT(NL80211_IFTYPE_STATION) | |
697 | BIT(NL80211_IFTYPE_ADHOC) | | |
698 | BIT(NL80211_IFTYPE_MESH_POINT); | |
699 | ||
008443de LR |
700 | if (AR_SREV_5416(sc->sc_ah)) |
701 | hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
55624204 S |
702 | |
703 | hw->queues = 4; | |
704 | hw->max_rates = 4; | |
705 | hw->channel_change_time = 5000; | |
706 | hw->max_listen_interval = 10; | |
65896510 | 707 | hw->max_rate_tries = 10; |
55624204 S |
708 | hw->sta_data_size = sizeof(struct ath_node); |
709 | hw->vif_data_size = sizeof(struct ath_vif); | |
710 | ||
6e5c2b4e | 711 | #ifdef CONFIG_ATH9K_RATE_CONTROL |
55624204 | 712 | hw->rate_control_algorithm = "ath9k_rate_control"; |
6e5c2b4e | 713 | #endif |
55624204 | 714 | |
d4659912 | 715 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) |
55624204 S |
716 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
717 | &sc->sbands[IEEE80211_BAND_2GHZ]; | |
d4659912 | 718 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) |
55624204 S |
719 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
720 | &sc->sbands[IEEE80211_BAND_5GHZ]; | |
285f2dda S |
721 | |
722 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { | |
d4659912 | 723 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) |
285f2dda | 724 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap); |
d4659912 | 725 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) |
285f2dda S |
726 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap); |
727 | } | |
728 | ||
729 | SET_IEEE80211_PERM_ADDR(hw, common->macaddr); | |
55624204 S |
730 | } |
731 | ||
285f2dda | 732 | int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid, |
55624204 S |
733 | const struct ath_bus_ops *bus_ops) |
734 | { | |
735 | struct ieee80211_hw *hw = sc->hw; | |
9fa23e17 | 736 | struct ath_wiphy *aphy = hw->priv; |
55624204 S |
737 | struct ath_common *common; |
738 | struct ath_hw *ah; | |
285f2dda | 739 | int error = 0; |
55624204 S |
740 | struct ath_regulatory *reg; |
741 | ||
285f2dda S |
742 | /* Bring up device */ |
743 | error = ath9k_init_softc(devid, sc, subsysid, bus_ops); | |
55624204 | 744 | if (error != 0) |
285f2dda | 745 | goto error_init; |
55624204 S |
746 | |
747 | ah = sc->sc_ah; | |
748 | common = ath9k_hw_common(ah); | |
285f2dda | 749 | ath9k_set_hw_capab(sc, hw); |
55624204 | 750 | |
285f2dda | 751 | /* Initialize regulatory */ |
55624204 S |
752 | error = ath_regd_init(&common->regulatory, sc->hw->wiphy, |
753 | ath9k_reg_notifier); | |
754 | if (error) | |
285f2dda | 755 | goto error_regd; |
55624204 S |
756 | |
757 | reg = &common->regulatory; | |
758 | ||
285f2dda | 759 | /* Setup TX DMA */ |
55624204 S |
760 | error = ath_tx_init(sc, ATH_TXBUF); |
761 | if (error != 0) | |
285f2dda | 762 | goto error_tx; |
55624204 | 763 | |
285f2dda | 764 | /* Setup RX DMA */ |
55624204 S |
765 | error = ath_rx_init(sc, ATH_RXBUF); |
766 | if (error != 0) | |
285f2dda | 767 | goto error_rx; |
55624204 | 768 | |
babcbc29 FF |
769 | ath9k_init_txpower_limits(sc); |
770 | ||
285f2dda | 771 | /* Register with mac80211 */ |
55624204 | 772 | error = ieee80211_register_hw(hw); |
285f2dda S |
773 | if (error) |
774 | goto error_register; | |
55624204 | 775 | |
285f2dda | 776 | /* Handle world regulatory */ |
55624204 S |
777 | if (!ath_is_world_regd(reg)) { |
778 | error = regulatory_hint(hw->wiphy, reg->alpha2); | |
779 | if (error) | |
285f2dda | 780 | goto error_world; |
55624204 S |
781 | } |
782 | ||
347809fc | 783 | INIT_WORK(&sc->hw_check_work, ath_hw_check); |
9f42c2b6 | 784 | INIT_WORK(&sc->paprd_work, ath_paprd_calibrate); |
285f2dda S |
785 | INIT_WORK(&sc->chan_work, ath9k_wiphy_chan_work); |
786 | INIT_DELAYED_WORK(&sc->wiphy_work, ath9k_wiphy_work); | |
787 | sc->wiphy_scheduler_int = msecs_to_jiffies(500); | |
9fa23e17 | 788 | aphy->last_rssi = ATH_RSSI_DUMMY_MARKER; |
55624204 | 789 | |
285f2dda | 790 | ath_init_leds(sc); |
55624204 S |
791 | ath_start_rfkill_poll(sc); |
792 | ||
793 | return 0; | |
794 | ||
285f2dda S |
795 | error_world: |
796 | ieee80211_unregister_hw(hw); | |
797 | error_register: | |
798 | ath_rx_cleanup(sc); | |
799 | error_rx: | |
800 | ath_tx_cleanup(sc); | |
801 | error_tx: | |
802 | /* Nothing */ | |
803 | error_regd: | |
804 | ath9k_deinit_softc(sc); | |
805 | error_init: | |
55624204 S |
806 | return error; |
807 | } | |
808 | ||
809 | /*****************************/ | |
810 | /* De-Initialization */ | |
811 | /*****************************/ | |
812 | ||
285f2dda | 813 | static void ath9k_deinit_softc(struct ath_softc *sc) |
55624204 | 814 | { |
285f2dda | 815 | int i = 0; |
55624204 | 816 | |
f209f529 FF |
817 | if (sc->sbands[IEEE80211_BAND_2GHZ].channels) |
818 | kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels); | |
819 | ||
820 | if (sc->sbands[IEEE80211_BAND_5GHZ].channels) | |
821 | kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels); | |
822 | ||
285f2dda S |
823 | if ((sc->btcoex.no_stomp_timer) && |
824 | sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) | |
825 | ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer); | |
55624204 | 826 | |
285f2dda S |
827 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) |
828 | if (ATH_TXQ_SETUP(sc, i)) | |
829 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
830 | ||
831 | ath9k_exit_debug(sc->sc_ah); | |
832 | ath9k_hw_deinit(sc->sc_ah); | |
833 | ||
834 | tasklet_kill(&sc->intr_tq); | |
835 | tasklet_kill(&sc->bcon_tasklet); | |
736b3a27 S |
836 | |
837 | kfree(sc->sc_ah); | |
838 | sc->sc_ah = NULL; | |
55624204 S |
839 | } |
840 | ||
285f2dda | 841 | void ath9k_deinit_device(struct ath_softc *sc) |
55624204 S |
842 | { |
843 | struct ieee80211_hw *hw = sc->hw; | |
55624204 S |
844 | int i = 0; |
845 | ||
846 | ath9k_ps_wakeup(sc); | |
847 | ||
55624204 | 848 | wiphy_rfkill_stop_polling(sc->hw->wiphy); |
285f2dda | 849 | ath_deinit_leds(sc); |
55624204 S |
850 | |
851 | for (i = 0; i < sc->num_sec_wiphy; i++) { | |
852 | struct ath_wiphy *aphy = sc->sec_wiphy[i]; | |
853 | if (aphy == NULL) | |
854 | continue; | |
855 | sc->sec_wiphy[i] = NULL; | |
856 | ieee80211_unregister_hw(aphy->hw); | |
857 | ieee80211_free_hw(aphy->hw); | |
858 | } | |
285f2dda | 859 | |
55624204 S |
860 | ieee80211_unregister_hw(hw); |
861 | ath_rx_cleanup(sc); | |
862 | ath_tx_cleanup(sc); | |
285f2dda | 863 | ath9k_deinit_softc(sc); |
447a42c2 | 864 | kfree(sc->sec_wiphy); |
55624204 S |
865 | } |
866 | ||
867 | void ath_descdma_cleanup(struct ath_softc *sc, | |
868 | struct ath_descdma *dd, | |
869 | struct list_head *head) | |
870 | { | |
871 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, | |
872 | dd->dd_desc_paddr); | |
873 | ||
874 | INIT_LIST_HEAD(head); | |
875 | kfree(dd->dd_bufptr); | |
876 | memset(dd, 0, sizeof(*dd)); | |
877 | } | |
878 | ||
55624204 S |
879 | /************************/ |
880 | /* Module Hooks */ | |
881 | /************************/ | |
882 | ||
883 | static int __init ath9k_init(void) | |
884 | { | |
885 | int error; | |
886 | ||
887 | /* Register rate control algorithm */ | |
888 | error = ath_rate_control_register(); | |
889 | if (error != 0) { | |
890 | printk(KERN_ERR | |
891 | "ath9k: Unable to register rate control " | |
892 | "algorithm: %d\n", | |
893 | error); | |
894 | goto err_out; | |
895 | } | |
896 | ||
897 | error = ath9k_debug_create_root(); | |
898 | if (error) { | |
899 | printk(KERN_ERR | |
900 | "ath9k: Unable to create debugfs root: %d\n", | |
901 | error); | |
902 | goto err_rate_unregister; | |
903 | } | |
904 | ||
905 | error = ath_pci_init(); | |
906 | if (error < 0) { | |
907 | printk(KERN_ERR | |
908 | "ath9k: No PCI devices found, driver not installed.\n"); | |
909 | error = -ENODEV; | |
910 | goto err_remove_root; | |
911 | } | |
912 | ||
913 | error = ath_ahb_init(); | |
914 | if (error < 0) { | |
915 | error = -ENODEV; | |
916 | goto err_pci_exit; | |
917 | } | |
918 | ||
919 | return 0; | |
920 | ||
921 | err_pci_exit: | |
922 | ath_pci_exit(); | |
923 | ||
924 | err_remove_root: | |
925 | ath9k_debug_remove_root(); | |
926 | err_rate_unregister: | |
927 | ath_rate_control_unregister(); | |
928 | err_out: | |
929 | return error; | |
930 | } | |
931 | module_init(ath9k_init); | |
932 | ||
933 | static void __exit ath9k_exit(void) | |
934 | { | |
935 | ath_ahb_exit(); | |
936 | ath_pci_exit(); | |
937 | ath9k_debug_remove_root(); | |
938 | ath_rate_control_unregister(); | |
939 | printk(KERN_INFO "%s: Driver unloaded\n", dev_info); | |
940 | } | |
941 | module_exit(ath9k_exit); |