Commit | Line | Data |
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55624204 | 1 | /* |
5b68138e | 2 | * Copyright (c) 2008-2011 Atheros Communications Inc. |
55624204 S |
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 | ||
516304b0 JP |
17 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
18 | ||
b7f080cf | 19 | #include <linux/dma-mapping.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
6fb1b1e1 | 21 | #include <linux/ath9k_platform.h> |
9d9779e7 | 22 | #include <linux/module.h> |
5a0e3ad6 | 23 | |
55624204 S |
24 | #include "ath9k.h" |
25 | ||
26 | static char *dev_info = "ath9k"; | |
27 | ||
28 | MODULE_AUTHOR("Atheros Communications"); | |
29 | MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); | |
30 | MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); | |
31 | MODULE_LICENSE("Dual BSD/GPL"); | |
32 | ||
33 | static unsigned int ath9k_debug = ATH_DBG_DEFAULT; | |
34 | module_param_named(debug, ath9k_debug, uint, 0); | |
35 | MODULE_PARM_DESC(debug, "Debugging mask"); | |
36 | ||
3e6109c5 JL |
37 | int ath9k_modparam_nohwcrypt; |
38 | module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444); | |
55624204 S |
39 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); |
40 | ||
93dbbcc4 | 41 | int led_blink; |
9a75c2ff VN |
42 | module_param_named(blink, led_blink, int, 0444); |
43 | MODULE_PARM_DESC(blink, "Enable LED blink on activity"); | |
44 | ||
8f5dcb1c VT |
45 | static int ath9k_btcoex_enable; |
46 | module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444); | |
47 | MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence"); | |
48 | ||
d584747b | 49 | bool is_ath9k_unloaded; |
55624204 S |
50 | /* We use the hw_value as an index into our private channel structure */ |
51 | ||
52 | #define CHAN2G(_freq, _idx) { \ | |
b1c1d000 | 53 | .band = IEEE80211_BAND_2GHZ, \ |
55624204 S |
54 | .center_freq = (_freq), \ |
55 | .hw_value = (_idx), \ | |
56 | .max_power = 20, \ | |
57 | } | |
58 | ||
59 | #define CHAN5G(_freq, _idx) { \ | |
60 | .band = IEEE80211_BAND_5GHZ, \ | |
61 | .center_freq = (_freq), \ | |
62 | .hw_value = (_idx), \ | |
63 | .max_power = 20, \ | |
64 | } | |
65 | ||
66 | /* Some 2 GHz radios are actually tunable on 2312-2732 | |
67 | * on 5 MHz steps, we support the channels which we know | |
68 | * we have calibration data for all cards though to make | |
69 | * this static */ | |
f209f529 | 70 | static const struct ieee80211_channel ath9k_2ghz_chantable[] = { |
55624204 S |
71 | CHAN2G(2412, 0), /* Channel 1 */ |
72 | CHAN2G(2417, 1), /* Channel 2 */ | |
73 | CHAN2G(2422, 2), /* Channel 3 */ | |
74 | CHAN2G(2427, 3), /* Channel 4 */ | |
75 | CHAN2G(2432, 4), /* Channel 5 */ | |
76 | CHAN2G(2437, 5), /* Channel 6 */ | |
77 | CHAN2G(2442, 6), /* Channel 7 */ | |
78 | CHAN2G(2447, 7), /* Channel 8 */ | |
79 | CHAN2G(2452, 8), /* Channel 9 */ | |
80 | CHAN2G(2457, 9), /* Channel 10 */ | |
81 | CHAN2G(2462, 10), /* Channel 11 */ | |
82 | CHAN2G(2467, 11), /* Channel 12 */ | |
83 | CHAN2G(2472, 12), /* Channel 13 */ | |
84 | CHAN2G(2484, 13), /* Channel 14 */ | |
85 | }; | |
86 | ||
87 | /* Some 5 GHz radios are actually tunable on XXXX-YYYY | |
88 | * on 5 MHz steps, we support the channels which we know | |
89 | * we have calibration data for all cards though to make | |
90 | * this static */ | |
f209f529 | 91 | static const struct ieee80211_channel ath9k_5ghz_chantable[] = { |
55624204 S |
92 | /* _We_ call this UNII 1 */ |
93 | CHAN5G(5180, 14), /* Channel 36 */ | |
94 | CHAN5G(5200, 15), /* Channel 40 */ | |
95 | CHAN5G(5220, 16), /* Channel 44 */ | |
96 | CHAN5G(5240, 17), /* Channel 48 */ | |
97 | /* _We_ call this UNII 2 */ | |
98 | CHAN5G(5260, 18), /* Channel 52 */ | |
99 | CHAN5G(5280, 19), /* Channel 56 */ | |
100 | CHAN5G(5300, 20), /* Channel 60 */ | |
101 | CHAN5G(5320, 21), /* Channel 64 */ | |
102 | /* _We_ call this "Middle band" */ | |
103 | CHAN5G(5500, 22), /* Channel 100 */ | |
104 | CHAN5G(5520, 23), /* Channel 104 */ | |
105 | CHAN5G(5540, 24), /* Channel 108 */ | |
106 | CHAN5G(5560, 25), /* Channel 112 */ | |
107 | CHAN5G(5580, 26), /* Channel 116 */ | |
108 | CHAN5G(5600, 27), /* Channel 120 */ | |
109 | CHAN5G(5620, 28), /* Channel 124 */ | |
110 | CHAN5G(5640, 29), /* Channel 128 */ | |
111 | CHAN5G(5660, 30), /* Channel 132 */ | |
112 | CHAN5G(5680, 31), /* Channel 136 */ | |
113 | CHAN5G(5700, 32), /* Channel 140 */ | |
114 | /* _We_ call this UNII 3 */ | |
115 | CHAN5G(5745, 33), /* Channel 149 */ | |
116 | CHAN5G(5765, 34), /* Channel 153 */ | |
117 | CHAN5G(5785, 35), /* Channel 157 */ | |
118 | CHAN5G(5805, 36), /* Channel 161 */ | |
119 | CHAN5G(5825, 37), /* Channel 165 */ | |
120 | }; | |
121 | ||
122 | /* Atheros hardware rate code addition for short premble */ | |
123 | #define SHPCHECK(__hw_rate, __flags) \ | |
124 | ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0) | |
125 | ||
126 | #define RATE(_bitrate, _hw_rate, _flags) { \ | |
127 | .bitrate = (_bitrate), \ | |
128 | .flags = (_flags), \ | |
129 | .hw_value = (_hw_rate), \ | |
130 | .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \ | |
131 | } | |
132 | ||
133 | static struct ieee80211_rate ath9k_legacy_rates[] = { | |
134 | RATE(10, 0x1b, 0), | |
135 | RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), | |
136 | RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), | |
137 | RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), | |
138 | RATE(60, 0x0b, 0), | |
139 | RATE(90, 0x0f, 0), | |
140 | RATE(120, 0x0a, 0), | |
141 | RATE(180, 0x0e, 0), | |
142 | RATE(240, 0x09, 0), | |
143 | RATE(360, 0x0d, 0), | |
144 | RATE(480, 0x08, 0), | |
145 | RATE(540, 0x0c, 0), | |
146 | }; | |
147 | ||
0cf55c21 FF |
148 | #ifdef CONFIG_MAC80211_LEDS |
149 | static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = { | |
150 | { .throughput = 0 * 1024, .blink_time = 334 }, | |
151 | { .throughput = 1 * 1024, .blink_time = 260 }, | |
152 | { .throughput = 5 * 1024, .blink_time = 220 }, | |
153 | { .throughput = 10 * 1024, .blink_time = 190 }, | |
154 | { .throughput = 20 * 1024, .blink_time = 170 }, | |
155 | { .throughput = 50 * 1024, .blink_time = 150 }, | |
156 | { .throughput = 70 * 1024, .blink_time = 130 }, | |
157 | { .throughput = 100 * 1024, .blink_time = 110 }, | |
158 | { .throughput = 200 * 1024, .blink_time = 80 }, | |
159 | { .throughput = 300 * 1024, .blink_time = 50 }, | |
160 | }; | |
161 | #endif | |
162 | ||
285f2dda | 163 | static void ath9k_deinit_softc(struct ath_softc *sc); |
55624204 S |
164 | |
165 | /* | |
166 | * Read and write, they both share the same lock. We do this to serialize | |
167 | * reads and writes on Atheros 802.11n PCI devices only. This is required | |
168 | * as the FIFO on these devices can only accept sanely 2 requests. | |
169 | */ | |
170 | ||
171 | static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) | |
172 | { | |
173 | struct ath_hw *ah = (struct ath_hw *) hw_priv; | |
174 | struct ath_common *common = ath9k_hw_common(ah); | |
175 | struct ath_softc *sc = (struct ath_softc *) common->priv; | |
176 | ||
f3eef645 | 177 | if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { |
55624204 S |
178 | unsigned long flags; |
179 | spin_lock_irqsave(&sc->sc_serial_rw, flags); | |
180 | iowrite32(val, sc->mem + reg_offset); | |
181 | spin_unlock_irqrestore(&sc->sc_serial_rw, flags); | |
182 | } else | |
183 | iowrite32(val, sc->mem + reg_offset); | |
184 | } | |
185 | ||
186 | static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset) | |
187 | { | |
188 | struct ath_hw *ah = (struct ath_hw *) hw_priv; | |
189 | struct ath_common *common = ath9k_hw_common(ah); | |
190 | struct ath_softc *sc = (struct ath_softc *) common->priv; | |
191 | u32 val; | |
192 | ||
f3eef645 | 193 | if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { |
55624204 S |
194 | unsigned long flags; |
195 | spin_lock_irqsave(&sc->sc_serial_rw, flags); | |
196 | val = ioread32(sc->mem + reg_offset); | |
197 | spin_unlock_irqrestore(&sc->sc_serial_rw, flags); | |
198 | } else | |
199 | val = ioread32(sc->mem + reg_offset); | |
200 | return val; | |
201 | } | |
202 | ||
5479de6e RM |
203 | static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset, |
204 | u32 set, u32 clr) | |
205 | { | |
206 | u32 val; | |
207 | ||
208 | val = ioread32(sc->mem + reg_offset); | |
209 | val &= ~clr; | |
210 | val |= set; | |
211 | iowrite32(val, sc->mem + reg_offset); | |
212 | ||
213 | return val; | |
214 | } | |
215 | ||
845e03c9 FF |
216 | static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr) |
217 | { | |
218 | struct ath_hw *ah = (struct ath_hw *) hw_priv; | |
219 | struct ath_common *common = ath9k_hw_common(ah); | |
220 | struct ath_softc *sc = (struct ath_softc *) common->priv; | |
221 | unsigned long uninitialized_var(flags); | |
222 | u32 val; | |
223 | ||
f3eef645 | 224 | if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { |
845e03c9 | 225 | spin_lock_irqsave(&sc->sc_serial_rw, flags); |
5479de6e | 226 | val = __ath9k_reg_rmw(sc, reg_offset, set, clr); |
845e03c9 | 227 | spin_unlock_irqrestore(&sc->sc_serial_rw, flags); |
5479de6e RM |
228 | } else |
229 | val = __ath9k_reg_rmw(sc, reg_offset, set, clr); | |
845e03c9 FF |
230 | |
231 | return val; | |
232 | } | |
233 | ||
55624204 S |
234 | /**************************/ |
235 | /* Initialization */ | |
236 | /**************************/ | |
237 | ||
238 | static void setup_ht_cap(struct ath_softc *sc, | |
239 | struct ieee80211_sta_ht_cap *ht_info) | |
240 | { | |
3bb065a7 FF |
241 | struct ath_hw *ah = sc->sc_ah; |
242 | struct ath_common *common = ath9k_hw_common(ah); | |
55624204 | 243 | u8 tx_streams, rx_streams; |
3bb065a7 | 244 | int i, max_streams; |
55624204 S |
245 | |
246 | ht_info->ht_supported = true; | |
247 | ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
248 | IEEE80211_HT_CAP_SM_PS | | |
249 | IEEE80211_HT_CAP_SGI_40 | | |
250 | IEEE80211_HT_CAP_DSSSCCK40; | |
251 | ||
b0a33448 LR |
252 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_LDPC) |
253 | ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING; | |
254 | ||
6473d24d VT |
255 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20) |
256 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; | |
257 | ||
55624204 S |
258 | ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; |
259 | ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; | |
260 | ||
7216198d | 261 | if (AR_SREV_9330(ah) || AR_SREV_9485(ah)) |
7f1c7a6a | 262 | max_streams = 1; |
e7104195 MSS |
263 | else if (AR_SREV_9462(ah)) |
264 | max_streams = 2; | |
7f1c7a6a | 265 | else if (AR_SREV_9300_20_OR_LATER(ah)) |
3bb065a7 FF |
266 | max_streams = 3; |
267 | else | |
268 | max_streams = 2; | |
269 | ||
7a37081e | 270 | if (AR_SREV_9280_20_OR_LATER(ah)) { |
074a8c0d FF |
271 | if (max_streams >= 2) |
272 | ht_info->cap |= IEEE80211_HT_CAP_TX_STBC; | |
273 | ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); | |
274 | } | |
275 | ||
55624204 S |
276 | /* set up supported mcs set */ |
277 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); | |
82b2d334 FF |
278 | tx_streams = ath9k_cmn_count_streams(ah->txchainmask, max_streams); |
279 | rx_streams = ath9k_cmn_count_streams(ah->rxchainmask, max_streams); | |
3bb065a7 | 280 | |
d2182b69 | 281 | ath_dbg(common, CONFIG, "TX streams %d, RX streams: %d\n", |
226afe68 | 282 | tx_streams, rx_streams); |
55624204 S |
283 | |
284 | if (tx_streams != rx_streams) { | |
55624204 S |
285 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
286 | ht_info->mcs.tx_params |= ((tx_streams - 1) << | |
287 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); | |
288 | } | |
289 | ||
3bb065a7 FF |
290 | for (i = 0; i < rx_streams; i++) |
291 | ht_info->mcs.rx_mask[i] = 0xff; | |
55624204 S |
292 | |
293 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; | |
294 | } | |
295 | ||
296 | static int ath9k_reg_notifier(struct wiphy *wiphy, | |
297 | struct regulatory_request *request) | |
298 | { | |
299 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
9ac58615 | 300 | struct ath_softc *sc = hw->priv; |
687f545e RM |
301 | struct ath_hw *ah = sc->sc_ah; |
302 | struct ath_regulatory *reg = ath9k_hw_regulatory(ah); | |
303 | int ret; | |
304 | ||
305 | ret = ath_reg_notifier_apply(wiphy, request, reg); | |
306 | ||
307 | /* Set tx power */ | |
308 | if (ah->curchan) { | |
309 | sc->config.txpowlimit = 2 * ah->curchan->chan->max_power; | |
310 | ath9k_ps_wakeup(sc); | |
311 | ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false); | |
312 | sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit; | |
313 | ath9k_ps_restore(sc); | |
314 | } | |
55624204 | 315 | |
687f545e | 316 | return ret; |
55624204 S |
317 | } |
318 | ||
319 | /* | |
320 | * This function will allocate both the DMA descriptor structure, and the | |
321 | * buffers it contains. These are used to contain the descriptors used | |
322 | * by the system. | |
323 | */ | |
324 | int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, | |
325 | struct list_head *head, const char *name, | |
4adfcded | 326 | int nbuf, int ndesc, bool is_tx) |
55624204 | 327 | { |
55624204 | 328 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
4adfcded | 329 | u8 *ds; |
55624204 | 330 | struct ath_buf *bf; |
4adfcded | 331 | int i, bsize, error, desc_len; |
55624204 | 332 | |
d2182b69 | 333 | ath_dbg(common, CONFIG, "%s DMA: %u buffers %u desc/buf\n", |
226afe68 | 334 | name, nbuf, ndesc); |
55624204 S |
335 | |
336 | INIT_LIST_HEAD(head); | |
4adfcded VT |
337 | |
338 | if (is_tx) | |
339 | desc_len = sc->sc_ah->caps.tx_desc_len; | |
340 | else | |
341 | desc_len = sizeof(struct ath_desc); | |
342 | ||
55624204 | 343 | /* ath_desc must be a multiple of DWORDs */ |
4adfcded | 344 | if ((desc_len % 4) != 0) { |
3800276a | 345 | ath_err(common, "ath_desc not DWORD aligned\n"); |
4adfcded | 346 | BUG_ON((desc_len % 4) != 0); |
55624204 S |
347 | error = -ENOMEM; |
348 | goto fail; | |
349 | } | |
350 | ||
4adfcded | 351 | dd->dd_desc_len = desc_len * nbuf * ndesc; |
55624204 S |
352 | |
353 | /* | |
354 | * Need additional DMA memory because we can't use | |
355 | * descriptors that cross the 4K page boundary. Assume | |
356 | * one skipped descriptor per 4K page. | |
357 | */ | |
358 | if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { | |
359 | u32 ndesc_skipped = | |
360 | ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); | |
361 | u32 dma_len; | |
362 | ||
363 | while (ndesc_skipped) { | |
4adfcded | 364 | dma_len = ndesc_skipped * desc_len; |
55624204 S |
365 | dd->dd_desc_len += dma_len; |
366 | ||
367 | ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); | |
ee289b64 | 368 | } |
55624204 S |
369 | } |
370 | ||
371 | /* allocate descriptors */ | |
372 | dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len, | |
373 | &dd->dd_desc_paddr, GFP_KERNEL); | |
374 | if (dd->dd_desc == NULL) { | |
375 | error = -ENOMEM; | |
376 | goto fail; | |
377 | } | |
4adfcded | 378 | ds = (u8 *) dd->dd_desc; |
d2182b69 | 379 | ath_dbg(common, CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", |
226afe68 JP |
380 | name, ds, (u32) dd->dd_desc_len, |
381 | ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); | |
55624204 S |
382 | |
383 | /* allocate buffers */ | |
384 | bsize = sizeof(struct ath_buf) * nbuf; | |
385 | bf = kzalloc(bsize, GFP_KERNEL); | |
386 | if (bf == NULL) { | |
387 | error = -ENOMEM; | |
388 | goto fail2; | |
389 | } | |
390 | dd->dd_bufptr = bf; | |
391 | ||
4adfcded | 392 | for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { |
55624204 S |
393 | bf->bf_desc = ds; |
394 | bf->bf_daddr = DS2PHYS(dd, ds); | |
395 | ||
396 | if (!(sc->sc_ah->caps.hw_caps & | |
397 | ATH9K_HW_CAP_4KB_SPLITTRANS)) { | |
398 | /* | |
399 | * Skip descriptor addresses which can cause 4KB | |
400 | * boundary crossing (addr + length) with a 32 dword | |
401 | * descriptor fetch. | |
402 | */ | |
403 | while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { | |
404 | BUG_ON((caddr_t) bf->bf_desc >= | |
405 | ((caddr_t) dd->dd_desc + | |
406 | dd->dd_desc_len)); | |
407 | ||
4adfcded | 408 | ds += (desc_len * ndesc); |
55624204 S |
409 | bf->bf_desc = ds; |
410 | bf->bf_daddr = DS2PHYS(dd, ds); | |
411 | } | |
412 | } | |
413 | list_add_tail(&bf->list, head); | |
414 | } | |
415 | return 0; | |
416 | fail2: | |
417 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, | |
418 | dd->dd_desc_paddr); | |
419 | fail: | |
420 | memset(dd, 0, sizeof(*dd)); | |
421 | return error; | |
55624204 S |
422 | } |
423 | ||
285f2dda S |
424 | static int ath9k_init_queues(struct ath_softc *sc) |
425 | { | |
285f2dda S |
426 | int i = 0; |
427 | ||
285f2dda | 428 | sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah); |
55624204 | 429 | sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); |
55624204 S |
430 | |
431 | sc->config.cabqReadytime = ATH_CABQ_READY_TIME; | |
432 | ath_cabq_update(sc); | |
433 | ||
60f2d1d5 | 434 | for (i = 0; i < WME_NUM_AC; i++) { |
066dae93 | 435 | sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i); |
60f2d1d5 BG |
436 | sc->tx.txq_map[i]->mac80211_qnum = i; |
437 | } | |
285f2dda | 438 | return 0; |
285f2dda S |
439 | } |
440 | ||
f209f529 | 441 | static int ath9k_init_channels_rates(struct ath_softc *sc) |
285f2dda | 442 | { |
f209f529 FF |
443 | void *channels; |
444 | ||
cac4220b FF |
445 | BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) + |
446 | ARRAY_SIZE(ath9k_5ghz_chantable) != | |
447 | ATH9K_NUM_CHANNELS); | |
448 | ||
d4659912 | 449 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) { |
f209f529 FF |
450 | channels = kmemdup(ath9k_2ghz_chantable, |
451 | sizeof(ath9k_2ghz_chantable), GFP_KERNEL); | |
452 | if (!channels) | |
453 | return -ENOMEM; | |
454 | ||
455 | sc->sbands[IEEE80211_BAND_2GHZ].channels = channels; | |
285f2dda S |
456 | sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; |
457 | sc->sbands[IEEE80211_BAND_2GHZ].n_channels = | |
458 | ARRAY_SIZE(ath9k_2ghz_chantable); | |
459 | sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates; | |
460 | sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates = | |
461 | ARRAY_SIZE(ath9k_legacy_rates); | |
55624204 S |
462 | } |
463 | ||
d4659912 | 464 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) { |
f209f529 FF |
465 | channels = kmemdup(ath9k_5ghz_chantable, |
466 | sizeof(ath9k_5ghz_chantable), GFP_KERNEL); | |
467 | if (!channels) { | |
468 | if (sc->sbands[IEEE80211_BAND_2GHZ].channels) | |
469 | kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels); | |
470 | return -ENOMEM; | |
471 | } | |
472 | ||
473 | sc->sbands[IEEE80211_BAND_5GHZ].channels = channels; | |
285f2dda S |
474 | sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; |
475 | sc->sbands[IEEE80211_BAND_5GHZ].n_channels = | |
476 | ARRAY_SIZE(ath9k_5ghz_chantable); | |
477 | sc->sbands[IEEE80211_BAND_5GHZ].bitrates = | |
478 | ath9k_legacy_rates + 4; | |
479 | sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates = | |
480 | ARRAY_SIZE(ath9k_legacy_rates) - 4; | |
481 | } | |
f209f529 | 482 | return 0; |
285f2dda | 483 | } |
55624204 | 484 | |
285f2dda S |
485 | static void ath9k_init_misc(struct ath_softc *sc) |
486 | { | |
487 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
488 | int i = 0; | |
3d4e20f2 | 489 | |
285f2dda | 490 | setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc); |
55624204 S |
491 | |
492 | sc->config.txpowlimit = ATH_TXPOWER_MAX; | |
364734fa | 493 | memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN); |
285f2dda | 494 | sc->beacon.slottime = ATH9K_SLOT_TIME_9; |
55624204 | 495 | |
7545daf4 | 496 | for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) |
55624204 | 497 | sc->beacon.bslot[i] = NULL; |
102885a5 VT |
498 | |
499 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) | |
500 | sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT; | |
285f2dda | 501 | } |
55624204 | 502 | |
eb93e891 | 503 | static int ath9k_init_softc(u16 devid, struct ath_softc *sc, |
285f2dda S |
504 | const struct ath_bus_ops *bus_ops) |
505 | { | |
6fb1b1e1 | 506 | struct ath9k_platform_data *pdata = sc->dev->platform_data; |
285f2dda S |
507 | struct ath_hw *ah = NULL; |
508 | struct ath_common *common; | |
509 | int ret = 0, i; | |
510 | int csz = 0; | |
55624204 | 511 | |
285f2dda S |
512 | ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL); |
513 | if (!ah) | |
514 | return -ENOMEM; | |
515 | ||
233536e1 | 516 | ah->hw = sc->hw; |
285f2dda | 517 | ah->hw_version.devid = devid; |
f9f84e96 FF |
518 | ah->reg_ops.read = ath9k_ioread32; |
519 | ah->reg_ops.write = ath9k_iowrite32; | |
845e03c9 | 520 | ah->reg_ops.rmw = ath9k_reg_rmw; |
e8fe7336 | 521 | atomic_set(&ah->intr_ref_cnt, -1); |
285f2dda S |
522 | sc->sc_ah = ah; |
523 | ||
6de66dd9 | 524 | if (!pdata) { |
a05b5d45 | 525 | ah->ah_flags |= AH_USE_EEPROM; |
6de66dd9 FF |
526 | sc->sc_ah->led_pin = -1; |
527 | } else { | |
528 | sc->sc_ah->gpio_mask = pdata->gpio_mask; | |
529 | sc->sc_ah->gpio_val = pdata->gpio_val; | |
530 | sc->sc_ah->led_pin = pdata->led_pin; | |
f2f5f2a1 | 531 | ah->is_clk_25mhz = pdata->is_clk_25mhz; |
3762561a | 532 | ah->get_mac_revision = pdata->get_mac_revision; |
7d95847c | 533 | ah->external_reset = pdata->external_reset; |
6de66dd9 | 534 | } |
a05b5d45 | 535 | |
285f2dda | 536 | common = ath9k_hw_common(ah); |
f9f84e96 | 537 | common->ops = &ah->reg_ops; |
285f2dda S |
538 | common->bus_ops = bus_ops; |
539 | common->ah = ah; | |
540 | common->hw = sc->hw; | |
541 | common->priv = sc; | |
542 | common->debug_mask = ath9k_debug; | |
8f5dcb1c | 543 | common->btcoex_enabled = ath9k_btcoex_enable == 1; |
05c0be2f | 544 | common->disable_ani = false; |
20b25744 | 545 | spin_lock_init(&common->cc_lock); |
285f2dda | 546 | |
285f2dda S |
547 | spin_lock_init(&sc->sc_serial_rw); |
548 | spin_lock_init(&sc->sc_pm_lock); | |
549 | mutex_init(&sc->mutex); | |
7f010c93 BG |
550 | #ifdef CONFIG_ATH9K_DEBUGFS |
551 | spin_lock_init(&sc->nodes_lock); | |
552 | INIT_LIST_HEAD(&sc->nodes); | |
5baec742 FF |
553 | #endif |
554 | #ifdef CONFIG_ATH9K_MAC_DEBUG | |
555 | spin_lock_init(&sc->debug.samp_lock); | |
7f010c93 | 556 | #endif |
285f2dda S |
557 | tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); |
558 | tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet, | |
559 | (unsigned long)sc); | |
560 | ||
561 | /* | |
562 | * Cache line size is used to size and align various | |
563 | * structures used to communicate with the hardware. | |
564 | */ | |
565 | ath_read_cachesize(common, &csz); | |
566 | common->cachelsz = csz << 2; /* convert to bytes */ | |
567 | ||
d70357d5 | 568 | /* Initializes the hardware for all supported chipsets */ |
285f2dda | 569 | ret = ath9k_hw_init(ah); |
d70357d5 | 570 | if (ret) |
285f2dda | 571 | goto err_hw; |
55624204 | 572 | |
6fb1b1e1 FF |
573 | if (pdata && pdata->macaddr) |
574 | memcpy(common->macaddr, pdata->macaddr, ETH_ALEN); | |
575 | ||
285f2dda S |
576 | ret = ath9k_init_queues(sc); |
577 | if (ret) | |
578 | goto err_queues; | |
579 | ||
580 | ret = ath9k_init_btcoex(sc); | |
581 | if (ret) | |
582 | goto err_btcoex; | |
583 | ||
f209f529 FF |
584 | ret = ath9k_init_channels_rates(sc); |
585 | if (ret) | |
586 | goto err_btcoex; | |
587 | ||
f82b4bde | 588 | ath9k_cmn_init_crypto(sc->sc_ah); |
285f2dda S |
589 | ath9k_init_misc(sc); |
590 | ||
55624204 | 591 | return 0; |
285f2dda S |
592 | |
593 | err_btcoex: | |
55624204 S |
594 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) |
595 | if (ATH_TXQ_SETUP(sc, i)) | |
596 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
285f2dda | 597 | err_queues: |
285f2dda S |
598 | ath9k_hw_deinit(ah); |
599 | err_hw: | |
55624204 | 600 | |
285f2dda S |
601 | kfree(ah); |
602 | sc->sc_ah = NULL; | |
603 | ||
604 | return ret; | |
55624204 S |
605 | } |
606 | ||
babcbc29 FF |
607 | static void ath9k_init_band_txpower(struct ath_softc *sc, int band) |
608 | { | |
609 | struct ieee80211_supported_band *sband; | |
610 | struct ieee80211_channel *chan; | |
611 | struct ath_hw *ah = sc->sc_ah; | |
babcbc29 FF |
612 | int i; |
613 | ||
614 | sband = &sc->sbands[band]; | |
615 | for (i = 0; i < sband->n_channels; i++) { | |
616 | chan = &sband->channels[i]; | |
617 | ah->curchan = &ah->channels[chan->hw_value]; | |
618 | ath9k_cmn_update_ichannel(ah->curchan, chan, NL80211_CHAN_HT20); | |
619 | ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true); | |
babcbc29 FF |
620 | } |
621 | } | |
622 | ||
623 | static void ath9k_init_txpower_limits(struct ath_softc *sc) | |
624 | { | |
625 | struct ath_hw *ah = sc->sc_ah; | |
626 | struct ath9k_channel *curchan = ah->curchan; | |
627 | ||
628 | if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) | |
629 | ath9k_init_band_txpower(sc, IEEE80211_BAND_2GHZ); | |
630 | if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) | |
631 | ath9k_init_band_txpower(sc, IEEE80211_BAND_5GHZ); | |
632 | ||
633 | ah->curchan = curchan; | |
634 | } | |
635 | ||
43c35284 FF |
636 | void ath9k_reload_chainmask_settings(struct ath_softc *sc) |
637 | { | |
638 | if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)) | |
639 | return; | |
640 | ||
641 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) | |
642 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap); | |
643 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) | |
644 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap); | |
645 | } | |
646 | ||
647 | ||
285f2dda | 648 | void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) |
55624204 | 649 | { |
43c35284 FF |
650 | struct ath_hw *ah = sc->sc_ah; |
651 | struct ath_common *common = ath9k_hw_common(ah); | |
285f2dda | 652 | |
55624204 S |
653 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
654 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | | |
655 | IEEE80211_HW_SIGNAL_DBM | | |
55624204 S |
656 | IEEE80211_HW_SUPPORTS_PS | |
657 | IEEE80211_HW_PS_NULLFUNC_STACK | | |
05df4986 | 658 | IEEE80211_HW_SPECTRUM_MGMT | |
bd8027a7 | 659 | IEEE80211_HW_REPORTS_TX_ACK_STATUS; |
55624204 | 660 | |
5ffaf8a3 LR |
661 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) |
662 | hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; | |
663 | ||
3e6109c5 | 664 | if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt) |
55624204 S |
665 | hw->flags |= IEEE80211_HW_MFP_CAPABLE; |
666 | ||
667 | hw->wiphy->interface_modes = | |
c426ee24 JB |
668 | BIT(NL80211_IFTYPE_P2P_GO) | |
669 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
55624204 | 670 | BIT(NL80211_IFTYPE_AP) | |
e51f3eff | 671 | BIT(NL80211_IFTYPE_WDS) | |
55624204 S |
672 | BIT(NL80211_IFTYPE_STATION) | |
673 | BIT(NL80211_IFTYPE_ADHOC) | | |
674 | BIT(NL80211_IFTYPE_MESH_POINT); | |
675 | ||
008443de LR |
676 | if (AR_SREV_5416(sc->sc_ah)) |
677 | hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
55624204 | 678 | |
cfdc9a8b | 679 | hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; |
fd656234 | 680 | hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; |
81ddbb5c | 681 | hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; |
cfdc9a8b | 682 | |
55624204 S |
683 | hw->queues = 4; |
684 | hw->max_rates = 4; | |
685 | hw->channel_change_time = 5000; | |
195ca3b1 | 686 | hw->max_listen_interval = 1; |
65896510 | 687 | hw->max_rate_tries = 10; |
55624204 S |
688 | hw->sta_data_size = sizeof(struct ath_node); |
689 | hw->vif_data_size = sizeof(struct ath_vif); | |
690 | ||
43c35284 FF |
691 | hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1; |
692 | hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1; | |
693 | ||
694 | /* single chain devices with rx diversity */ | |
695 | if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) | |
696 | hw->wiphy->available_antennas_rx = BIT(0) | BIT(1); | |
697 | ||
698 | sc->ant_rx = hw->wiphy->available_antennas_rx; | |
699 | sc->ant_tx = hw->wiphy->available_antennas_tx; | |
700 | ||
6e5c2b4e | 701 | #ifdef CONFIG_ATH9K_RATE_CONTROL |
55624204 | 702 | hw->rate_control_algorithm = "ath9k_rate_control"; |
6e5c2b4e | 703 | #endif |
55624204 | 704 | |
d4659912 | 705 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) |
55624204 S |
706 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
707 | &sc->sbands[IEEE80211_BAND_2GHZ]; | |
d4659912 | 708 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) |
55624204 S |
709 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
710 | &sc->sbands[IEEE80211_BAND_5GHZ]; | |
285f2dda | 711 | |
43c35284 | 712 | ath9k_reload_chainmask_settings(sc); |
285f2dda S |
713 | |
714 | SET_IEEE80211_PERM_ADDR(hw, common->macaddr); | |
55624204 S |
715 | } |
716 | ||
eb93e891 | 717 | int ath9k_init_device(u16 devid, struct ath_softc *sc, |
55624204 S |
718 | const struct ath_bus_ops *bus_ops) |
719 | { | |
720 | struct ieee80211_hw *hw = sc->hw; | |
721 | struct ath_common *common; | |
722 | struct ath_hw *ah; | |
285f2dda | 723 | int error = 0; |
55624204 S |
724 | struct ath_regulatory *reg; |
725 | ||
285f2dda | 726 | /* Bring up device */ |
eb93e891 | 727 | error = ath9k_init_softc(devid, sc, bus_ops); |
55624204 | 728 | if (error != 0) |
285f2dda | 729 | goto error_init; |
55624204 S |
730 | |
731 | ah = sc->sc_ah; | |
732 | common = ath9k_hw_common(ah); | |
285f2dda | 733 | ath9k_set_hw_capab(sc, hw); |
55624204 | 734 | |
285f2dda | 735 | /* Initialize regulatory */ |
55624204 S |
736 | error = ath_regd_init(&common->regulatory, sc->hw->wiphy, |
737 | ath9k_reg_notifier); | |
738 | if (error) | |
285f2dda | 739 | goto error_regd; |
55624204 S |
740 | |
741 | reg = &common->regulatory; | |
742 | ||
285f2dda | 743 | /* Setup TX DMA */ |
55624204 S |
744 | error = ath_tx_init(sc, ATH_TXBUF); |
745 | if (error != 0) | |
285f2dda | 746 | goto error_tx; |
55624204 | 747 | |
285f2dda | 748 | /* Setup RX DMA */ |
55624204 S |
749 | error = ath_rx_init(sc, ATH_RXBUF); |
750 | if (error != 0) | |
285f2dda | 751 | goto error_rx; |
55624204 | 752 | |
babcbc29 FF |
753 | ath9k_init_txpower_limits(sc); |
754 | ||
0cf55c21 FF |
755 | #ifdef CONFIG_MAC80211_LEDS |
756 | /* must be initialized before ieee80211_register_hw */ | |
757 | sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw, | |
758 | IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink, | |
759 | ARRAY_SIZE(ath9k_tpt_blink)); | |
760 | #endif | |
761 | ||
07445f68 MSS |
762 | INIT_WORK(&sc->hw_reset_work, ath_reset_work); |
763 | INIT_WORK(&sc->hw_check_work, ath_hw_check); | |
764 | INIT_WORK(&sc->paprd_work, ath_paprd_calibrate); | |
765 | INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work); | |
766 | ||
285f2dda | 767 | /* Register with mac80211 */ |
55624204 | 768 | error = ieee80211_register_hw(hw); |
285f2dda S |
769 | if (error) |
770 | goto error_register; | |
55624204 | 771 | |
eb272441 BG |
772 | error = ath9k_init_debug(ah); |
773 | if (error) { | |
3800276a | 774 | ath_err(common, "Unable to create debugfs files\n"); |
eb272441 BG |
775 | goto error_world; |
776 | } | |
777 | ||
285f2dda | 778 | /* Handle world regulatory */ |
55624204 S |
779 | if (!ath_is_world_regd(reg)) { |
780 | error = regulatory_hint(hw->wiphy, reg->alpha2); | |
781 | if (error) | |
285f2dda | 782 | goto error_world; |
55624204 S |
783 | } |
784 | ||
01e18918 | 785 | setup_timer(&sc->rx_poll_timer, ath_rx_poll, (unsigned long)sc); |
9ac58615 | 786 | sc->last_rssi = ATH_RSSI_DUMMY_MARKER; |
55624204 | 787 | |
285f2dda | 788 | ath_init_leds(sc); |
55624204 S |
789 | ath_start_rfkill_poll(sc); |
790 | ||
791 | return 0; | |
792 | ||
285f2dda S |
793 | error_world: |
794 | ieee80211_unregister_hw(hw); | |
795 | error_register: | |
796 | ath_rx_cleanup(sc); | |
797 | error_rx: | |
798 | ath_tx_cleanup(sc); | |
799 | error_tx: | |
800 | /* Nothing */ | |
801 | error_regd: | |
802 | ath9k_deinit_softc(sc); | |
803 | error_init: | |
55624204 S |
804 | return error; |
805 | } | |
806 | ||
807 | /*****************************/ | |
808 | /* De-Initialization */ | |
809 | /*****************************/ | |
810 | ||
285f2dda | 811 | static void ath9k_deinit_softc(struct ath_softc *sc) |
55624204 | 812 | { |
285f2dda | 813 | int i = 0; |
55624204 | 814 | |
f209f529 FF |
815 | if (sc->sbands[IEEE80211_BAND_2GHZ].channels) |
816 | kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels); | |
817 | ||
818 | if (sc->sbands[IEEE80211_BAND_5GHZ].channels) | |
819 | kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels); | |
820 | ||
5908120f | 821 | ath9k_deinit_btcoex(sc); |
19686ddf | 822 | |
285f2dda S |
823 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) |
824 | if (ATH_TXQ_SETUP(sc, i)) | |
825 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
826 | ||
285f2dda S |
827 | ath9k_hw_deinit(sc->sc_ah); |
828 | ||
736b3a27 S |
829 | kfree(sc->sc_ah); |
830 | sc->sc_ah = NULL; | |
55624204 S |
831 | } |
832 | ||
285f2dda | 833 | void ath9k_deinit_device(struct ath_softc *sc) |
55624204 S |
834 | { |
835 | struct ieee80211_hw *hw = sc->hw; | |
55624204 S |
836 | |
837 | ath9k_ps_wakeup(sc); | |
838 | ||
55624204 | 839 | wiphy_rfkill_stop_polling(sc->hw->wiphy); |
285f2dda | 840 | ath_deinit_leds(sc); |
55624204 | 841 | |
c7c18060 RM |
842 | ath9k_ps_restore(sc); |
843 | ||
55624204 S |
844 | ieee80211_unregister_hw(hw); |
845 | ath_rx_cleanup(sc); | |
846 | ath_tx_cleanup(sc); | |
285f2dda | 847 | ath9k_deinit_softc(sc); |
55624204 S |
848 | } |
849 | ||
850 | void ath_descdma_cleanup(struct ath_softc *sc, | |
851 | struct ath_descdma *dd, | |
852 | struct list_head *head) | |
853 | { | |
854 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, | |
855 | dd->dd_desc_paddr); | |
856 | ||
857 | INIT_LIST_HEAD(head); | |
858 | kfree(dd->dd_bufptr); | |
859 | memset(dd, 0, sizeof(*dd)); | |
860 | } | |
861 | ||
55624204 S |
862 | /************************/ |
863 | /* Module Hooks */ | |
864 | /************************/ | |
865 | ||
866 | static int __init ath9k_init(void) | |
867 | { | |
868 | int error; | |
869 | ||
870 | /* Register rate control algorithm */ | |
871 | error = ath_rate_control_register(); | |
872 | if (error != 0) { | |
516304b0 JP |
873 | pr_err("Unable to register rate control algorithm: %d\n", |
874 | error); | |
55624204 S |
875 | goto err_out; |
876 | } | |
877 | ||
55624204 S |
878 | error = ath_pci_init(); |
879 | if (error < 0) { | |
516304b0 | 880 | pr_err("No PCI devices found, driver not installed\n"); |
55624204 | 881 | error = -ENODEV; |
eb272441 | 882 | goto err_rate_unregister; |
55624204 S |
883 | } |
884 | ||
885 | error = ath_ahb_init(); | |
886 | if (error < 0) { | |
887 | error = -ENODEV; | |
888 | goto err_pci_exit; | |
889 | } | |
890 | ||
891 | return 0; | |
892 | ||
893 | err_pci_exit: | |
894 | ath_pci_exit(); | |
895 | ||
55624204 S |
896 | err_rate_unregister: |
897 | ath_rate_control_unregister(); | |
898 | err_out: | |
899 | return error; | |
900 | } | |
901 | module_init(ath9k_init); | |
902 | ||
903 | static void __exit ath9k_exit(void) | |
904 | { | |
d584747b | 905 | is_ath9k_unloaded = true; |
55624204 S |
906 | ath_ahb_exit(); |
907 | ath_pci_exit(); | |
55624204 | 908 | ath_rate_control_unregister(); |
516304b0 | 909 | pr_info("%s: Driver unloaded\n", dev_info); |
55624204 S |
910 | } |
911 | module_exit(ath9k_exit); |