Commit | Line | Data |
---|---|---|
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 | 17 | #include <linux/slab.h> |
6fb1b1e1 | 18 | #include <linux/ath9k_platform.h> |
5a0e3ad6 | 19 | |
55624204 S |
20 | #include "ath9k.h" |
21 | ||
22 | static char *dev_info = "ath9k"; | |
23 | ||
24 | MODULE_AUTHOR("Atheros Communications"); | |
25 | MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); | |
26 | MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); | |
27 | MODULE_LICENSE("Dual BSD/GPL"); | |
28 | ||
29 | static unsigned int ath9k_debug = ATH_DBG_DEFAULT; | |
30 | module_param_named(debug, ath9k_debug, uint, 0); | |
31 | MODULE_PARM_DESC(debug, "Debugging mask"); | |
32 | ||
3e6109c5 JL |
33 | int ath9k_modparam_nohwcrypt; |
34 | module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444); | |
55624204 S |
35 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); |
36 | ||
93dbbcc4 | 37 | int led_blink; |
9a75c2ff VN |
38 | module_param_named(blink, led_blink, int, 0444); |
39 | MODULE_PARM_DESC(blink, "Enable LED blink on activity"); | |
40 | ||
8f5dcb1c VT |
41 | static int ath9k_btcoex_enable; |
42 | module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444); | |
43 | MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence"); | |
44 | ||
d584747b | 45 | bool is_ath9k_unloaded; |
55624204 S |
46 | /* We use the hw_value as an index into our private channel structure */ |
47 | ||
48 | #define CHAN2G(_freq, _idx) { \ | |
b1c1d000 | 49 | .band = IEEE80211_BAND_2GHZ, \ |
55624204 S |
50 | .center_freq = (_freq), \ |
51 | .hw_value = (_idx), \ | |
52 | .max_power = 20, \ | |
53 | } | |
54 | ||
55 | #define CHAN5G(_freq, _idx) { \ | |
56 | .band = IEEE80211_BAND_5GHZ, \ | |
57 | .center_freq = (_freq), \ | |
58 | .hw_value = (_idx), \ | |
59 | .max_power = 20, \ | |
60 | } | |
61 | ||
62 | /* Some 2 GHz radios are actually tunable on 2312-2732 | |
63 | * on 5 MHz steps, we support the channels which we know | |
64 | * we have calibration data for all cards though to make | |
65 | * this static */ | |
f209f529 | 66 | static const struct ieee80211_channel ath9k_2ghz_chantable[] = { |
55624204 S |
67 | CHAN2G(2412, 0), /* Channel 1 */ |
68 | CHAN2G(2417, 1), /* Channel 2 */ | |
69 | CHAN2G(2422, 2), /* Channel 3 */ | |
70 | CHAN2G(2427, 3), /* Channel 4 */ | |
71 | CHAN2G(2432, 4), /* Channel 5 */ | |
72 | CHAN2G(2437, 5), /* Channel 6 */ | |
73 | CHAN2G(2442, 6), /* Channel 7 */ | |
74 | CHAN2G(2447, 7), /* Channel 8 */ | |
75 | CHAN2G(2452, 8), /* Channel 9 */ | |
76 | CHAN2G(2457, 9), /* Channel 10 */ | |
77 | CHAN2G(2462, 10), /* Channel 11 */ | |
78 | CHAN2G(2467, 11), /* Channel 12 */ | |
79 | CHAN2G(2472, 12), /* Channel 13 */ | |
80 | CHAN2G(2484, 13), /* Channel 14 */ | |
81 | }; | |
82 | ||
83 | /* Some 5 GHz radios are actually tunable on XXXX-YYYY | |
84 | * on 5 MHz steps, we support the channels which we know | |
85 | * we have calibration data for all cards though to make | |
86 | * this static */ | |
f209f529 | 87 | static const struct ieee80211_channel ath9k_5ghz_chantable[] = { |
55624204 S |
88 | /* _We_ call this UNII 1 */ |
89 | CHAN5G(5180, 14), /* Channel 36 */ | |
90 | CHAN5G(5200, 15), /* Channel 40 */ | |
91 | CHAN5G(5220, 16), /* Channel 44 */ | |
92 | CHAN5G(5240, 17), /* Channel 48 */ | |
93 | /* _We_ call this UNII 2 */ | |
94 | CHAN5G(5260, 18), /* Channel 52 */ | |
95 | CHAN5G(5280, 19), /* Channel 56 */ | |
96 | CHAN5G(5300, 20), /* Channel 60 */ | |
97 | CHAN5G(5320, 21), /* Channel 64 */ | |
98 | /* _We_ call this "Middle band" */ | |
99 | CHAN5G(5500, 22), /* Channel 100 */ | |
100 | CHAN5G(5520, 23), /* Channel 104 */ | |
101 | CHAN5G(5540, 24), /* Channel 108 */ | |
102 | CHAN5G(5560, 25), /* Channel 112 */ | |
103 | CHAN5G(5580, 26), /* Channel 116 */ | |
104 | CHAN5G(5600, 27), /* Channel 120 */ | |
105 | CHAN5G(5620, 28), /* Channel 124 */ | |
106 | CHAN5G(5640, 29), /* Channel 128 */ | |
107 | CHAN5G(5660, 30), /* Channel 132 */ | |
108 | CHAN5G(5680, 31), /* Channel 136 */ | |
109 | CHAN5G(5700, 32), /* Channel 140 */ | |
110 | /* _We_ call this UNII 3 */ | |
111 | CHAN5G(5745, 33), /* Channel 149 */ | |
112 | CHAN5G(5765, 34), /* Channel 153 */ | |
113 | CHAN5G(5785, 35), /* Channel 157 */ | |
114 | CHAN5G(5805, 36), /* Channel 161 */ | |
115 | CHAN5G(5825, 37), /* Channel 165 */ | |
116 | }; | |
117 | ||
118 | /* Atheros hardware rate code addition for short premble */ | |
119 | #define SHPCHECK(__hw_rate, __flags) \ | |
120 | ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0) | |
121 | ||
122 | #define RATE(_bitrate, _hw_rate, _flags) { \ | |
123 | .bitrate = (_bitrate), \ | |
124 | .flags = (_flags), \ | |
125 | .hw_value = (_hw_rate), \ | |
126 | .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \ | |
127 | } | |
128 | ||
129 | static struct ieee80211_rate ath9k_legacy_rates[] = { | |
130 | RATE(10, 0x1b, 0), | |
131 | RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), | |
132 | RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), | |
133 | RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), | |
134 | RATE(60, 0x0b, 0), | |
135 | RATE(90, 0x0f, 0), | |
136 | RATE(120, 0x0a, 0), | |
137 | RATE(180, 0x0e, 0), | |
138 | RATE(240, 0x09, 0), | |
139 | RATE(360, 0x0d, 0), | |
140 | RATE(480, 0x08, 0), | |
141 | RATE(540, 0x0c, 0), | |
142 | }; | |
143 | ||
0cf55c21 FF |
144 | #ifdef CONFIG_MAC80211_LEDS |
145 | static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = { | |
146 | { .throughput = 0 * 1024, .blink_time = 334 }, | |
147 | { .throughput = 1 * 1024, .blink_time = 260 }, | |
148 | { .throughput = 5 * 1024, .blink_time = 220 }, | |
149 | { .throughput = 10 * 1024, .blink_time = 190 }, | |
150 | { .throughput = 20 * 1024, .blink_time = 170 }, | |
151 | { .throughput = 50 * 1024, .blink_time = 150 }, | |
152 | { .throughput = 70 * 1024, .blink_time = 130 }, | |
153 | { .throughput = 100 * 1024, .blink_time = 110 }, | |
154 | { .throughput = 200 * 1024, .blink_time = 80 }, | |
155 | { .throughput = 300 * 1024, .blink_time = 50 }, | |
156 | }; | |
157 | #endif | |
158 | ||
285f2dda | 159 | static void ath9k_deinit_softc(struct ath_softc *sc); |
55624204 S |
160 | |
161 | /* | |
162 | * Read and write, they both share the same lock. We do this to serialize | |
163 | * reads and writes on Atheros 802.11n PCI devices only. This is required | |
164 | * as the FIFO on these devices can only accept sanely 2 requests. | |
165 | */ | |
166 | ||
167 | static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) | |
168 | { | |
169 | struct ath_hw *ah = (struct ath_hw *) hw_priv; | |
170 | struct ath_common *common = ath9k_hw_common(ah); | |
171 | struct ath_softc *sc = (struct ath_softc *) common->priv; | |
172 | ||
173 | if (ah->config.serialize_regmode == SER_REG_MODE_ON) { | |
174 | unsigned long flags; | |
175 | spin_lock_irqsave(&sc->sc_serial_rw, flags); | |
176 | iowrite32(val, sc->mem + reg_offset); | |
177 | spin_unlock_irqrestore(&sc->sc_serial_rw, flags); | |
178 | } else | |
179 | iowrite32(val, sc->mem + reg_offset); | |
180 | } | |
181 | ||
182 | static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset) | |
183 | { | |
184 | struct ath_hw *ah = (struct ath_hw *) hw_priv; | |
185 | struct ath_common *common = ath9k_hw_common(ah); | |
186 | struct ath_softc *sc = (struct ath_softc *) common->priv; | |
187 | u32 val; | |
188 | ||
189 | if (ah->config.serialize_regmode == SER_REG_MODE_ON) { | |
190 | unsigned long flags; | |
191 | spin_lock_irqsave(&sc->sc_serial_rw, flags); | |
192 | val = ioread32(sc->mem + reg_offset); | |
193 | spin_unlock_irqrestore(&sc->sc_serial_rw, flags); | |
194 | } else | |
195 | val = ioread32(sc->mem + reg_offset); | |
196 | return val; | |
197 | } | |
198 | ||
845e03c9 FF |
199 | static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr) |
200 | { | |
201 | struct ath_hw *ah = (struct ath_hw *) hw_priv; | |
202 | struct ath_common *common = ath9k_hw_common(ah); | |
203 | struct ath_softc *sc = (struct ath_softc *) common->priv; | |
204 | unsigned long uninitialized_var(flags); | |
205 | u32 val; | |
206 | ||
207 | if (ah->config.serialize_regmode == SER_REG_MODE_ON) | |
208 | spin_lock_irqsave(&sc->sc_serial_rw, flags); | |
209 | ||
210 | val = ioread32(sc->mem + reg_offset); | |
211 | val &= ~clr; | |
212 | val |= set; | |
213 | iowrite32(val, sc->mem + reg_offset); | |
214 | ||
215 | if (ah->config.serialize_regmode == SER_REG_MODE_ON) | |
216 | spin_unlock_irqrestore(&sc->sc_serial_rw, flags); | |
217 | ||
218 | return val; | |
219 | } | |
220 | ||
55624204 S |
221 | /**************************/ |
222 | /* Initialization */ | |
223 | /**************************/ | |
224 | ||
225 | static void setup_ht_cap(struct ath_softc *sc, | |
226 | struct ieee80211_sta_ht_cap *ht_info) | |
227 | { | |
3bb065a7 FF |
228 | struct ath_hw *ah = sc->sc_ah; |
229 | struct ath_common *common = ath9k_hw_common(ah); | |
55624204 | 230 | u8 tx_streams, rx_streams; |
3bb065a7 | 231 | int i, max_streams; |
55624204 S |
232 | |
233 | ht_info->ht_supported = true; | |
234 | ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
235 | IEEE80211_HT_CAP_SM_PS | | |
236 | IEEE80211_HT_CAP_SGI_40 | | |
237 | IEEE80211_HT_CAP_DSSSCCK40; | |
238 | ||
b0a33448 LR |
239 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_LDPC) |
240 | ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING; | |
241 | ||
6473d24d VT |
242 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20) |
243 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; | |
244 | ||
55624204 S |
245 | ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; |
246 | ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; | |
247 | ||
7f1c7a6a VT |
248 | if (AR_SREV_9485(ah)) |
249 | max_streams = 1; | |
250 | else if (AR_SREV_9300_20_OR_LATER(ah)) | |
3bb065a7 FF |
251 | max_streams = 3; |
252 | else | |
253 | max_streams = 2; | |
254 | ||
7a37081e | 255 | if (AR_SREV_9280_20_OR_LATER(ah)) { |
074a8c0d FF |
256 | if (max_streams >= 2) |
257 | ht_info->cap |= IEEE80211_HT_CAP_TX_STBC; | |
258 | ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); | |
259 | } | |
260 | ||
55624204 S |
261 | /* set up supported mcs set */ |
262 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); | |
61389f3e S |
263 | tx_streams = ath9k_cmn_count_streams(common->tx_chainmask, max_streams); |
264 | rx_streams = ath9k_cmn_count_streams(common->rx_chainmask, max_streams); | |
3bb065a7 | 265 | |
226afe68 JP |
266 | ath_dbg(common, ATH_DBG_CONFIG, |
267 | "TX streams %d, RX streams: %d\n", | |
268 | tx_streams, rx_streams); | |
55624204 S |
269 | |
270 | if (tx_streams != rx_streams) { | |
55624204 S |
271 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
272 | ht_info->mcs.tx_params |= ((tx_streams - 1) << | |
273 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); | |
274 | } | |
275 | ||
3bb065a7 FF |
276 | for (i = 0; i < rx_streams; i++) |
277 | ht_info->mcs.rx_mask[i] = 0xff; | |
55624204 S |
278 | |
279 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; | |
280 | } | |
281 | ||
282 | static int ath9k_reg_notifier(struct wiphy *wiphy, | |
283 | struct regulatory_request *request) | |
284 | { | |
285 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
9ac58615 | 286 | struct ath_softc *sc = hw->priv; |
55624204 S |
287 | struct ath_regulatory *reg = ath9k_hw_regulatory(sc->sc_ah); |
288 | ||
289 | return ath_reg_notifier_apply(wiphy, request, reg); | |
290 | } | |
291 | ||
292 | /* | |
293 | * This function will allocate both the DMA descriptor structure, and the | |
294 | * buffers it contains. These are used to contain the descriptors used | |
295 | * by the system. | |
296 | */ | |
297 | int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, | |
298 | struct list_head *head, const char *name, | |
4adfcded | 299 | int nbuf, int ndesc, bool is_tx) |
55624204 S |
300 | { |
301 | #define DS2PHYS(_dd, _ds) \ | |
302 | ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) | |
303 | #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0) | |
304 | #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096) | |
305 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
4adfcded | 306 | u8 *ds; |
55624204 | 307 | struct ath_buf *bf; |
4adfcded | 308 | int i, bsize, error, desc_len; |
55624204 | 309 | |
226afe68 JP |
310 | ath_dbg(common, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n", |
311 | name, nbuf, ndesc); | |
55624204 S |
312 | |
313 | INIT_LIST_HEAD(head); | |
4adfcded VT |
314 | |
315 | if (is_tx) | |
316 | desc_len = sc->sc_ah->caps.tx_desc_len; | |
317 | else | |
318 | desc_len = sizeof(struct ath_desc); | |
319 | ||
55624204 | 320 | /* ath_desc must be a multiple of DWORDs */ |
4adfcded | 321 | if ((desc_len % 4) != 0) { |
3800276a | 322 | ath_err(common, "ath_desc not DWORD aligned\n"); |
4adfcded | 323 | BUG_ON((desc_len % 4) != 0); |
55624204 S |
324 | error = -ENOMEM; |
325 | goto fail; | |
326 | } | |
327 | ||
4adfcded | 328 | dd->dd_desc_len = desc_len * nbuf * ndesc; |
55624204 S |
329 | |
330 | /* | |
331 | * Need additional DMA memory because we can't use | |
332 | * descriptors that cross the 4K page boundary. Assume | |
333 | * one skipped descriptor per 4K page. | |
334 | */ | |
335 | if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { | |
336 | u32 ndesc_skipped = | |
337 | ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); | |
338 | u32 dma_len; | |
339 | ||
340 | while (ndesc_skipped) { | |
4adfcded | 341 | dma_len = ndesc_skipped * desc_len; |
55624204 S |
342 | dd->dd_desc_len += dma_len; |
343 | ||
344 | ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); | |
ee289b64 | 345 | } |
55624204 S |
346 | } |
347 | ||
348 | /* allocate descriptors */ | |
349 | dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len, | |
350 | &dd->dd_desc_paddr, GFP_KERNEL); | |
351 | if (dd->dd_desc == NULL) { | |
352 | error = -ENOMEM; | |
353 | goto fail; | |
354 | } | |
4adfcded | 355 | ds = (u8 *) dd->dd_desc; |
226afe68 JP |
356 | ath_dbg(common, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", |
357 | name, ds, (u32) dd->dd_desc_len, | |
358 | ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); | |
55624204 S |
359 | |
360 | /* allocate buffers */ | |
361 | bsize = sizeof(struct ath_buf) * nbuf; | |
362 | bf = kzalloc(bsize, GFP_KERNEL); | |
363 | if (bf == NULL) { | |
364 | error = -ENOMEM; | |
365 | goto fail2; | |
366 | } | |
367 | dd->dd_bufptr = bf; | |
368 | ||
4adfcded | 369 | for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { |
55624204 S |
370 | bf->bf_desc = ds; |
371 | bf->bf_daddr = DS2PHYS(dd, ds); | |
372 | ||
373 | if (!(sc->sc_ah->caps.hw_caps & | |
374 | ATH9K_HW_CAP_4KB_SPLITTRANS)) { | |
375 | /* | |
376 | * Skip descriptor addresses which can cause 4KB | |
377 | * boundary crossing (addr + length) with a 32 dword | |
378 | * descriptor fetch. | |
379 | */ | |
380 | while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { | |
381 | BUG_ON((caddr_t) bf->bf_desc >= | |
382 | ((caddr_t) dd->dd_desc + | |
383 | dd->dd_desc_len)); | |
384 | ||
4adfcded | 385 | ds += (desc_len * ndesc); |
55624204 S |
386 | bf->bf_desc = ds; |
387 | bf->bf_daddr = DS2PHYS(dd, ds); | |
388 | } | |
389 | } | |
390 | list_add_tail(&bf->list, head); | |
391 | } | |
392 | return 0; | |
393 | fail2: | |
394 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, | |
395 | dd->dd_desc_paddr); | |
396 | fail: | |
397 | memset(dd, 0, sizeof(*dd)); | |
398 | return error; | |
399 | #undef ATH_DESC_4KB_BOUND_CHECK | |
400 | #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED | |
401 | #undef DS2PHYS | |
402 | } | |
403 | ||
db7ec38d | 404 | void ath9k_init_crypto(struct ath_softc *sc) |
55624204 | 405 | { |
285f2dda S |
406 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
407 | int i = 0; | |
55624204 S |
408 | |
409 | /* Get the hardware key cache size. */ | |
6de12a1b | 410 | common->keymax = AR_KEYTABLE_SIZE; |
55624204 S |
411 | |
412 | /* | |
413 | * Reset the key cache since some parts do not | |
414 | * reset the contents on initial power up. | |
415 | */ | |
416 | for (i = 0; i < common->keymax; i++) | |
040e539e | 417 | ath_hw_keyreset(common, (u16) i); |
55624204 | 418 | |
55624204 | 419 | /* |
285f2dda S |
420 | * Check whether the separate key cache entries |
421 | * are required to handle both tx+rx MIC keys. | |
422 | * With split mic keys the number of stations is limited | |
423 | * to 27 otherwise 59. | |
55624204 | 424 | */ |
117675d0 BR |
425 | if (sc->sc_ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA) |
426 | common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED; | |
285f2dda S |
427 | } |
428 | ||
429 | static int ath9k_init_btcoex(struct ath_softc *sc) | |
430 | { | |
066dae93 FF |
431 | struct ath_txq *txq; |
432 | int r; | |
285f2dda S |
433 | |
434 | switch (sc->sc_ah->btcoex_hw.scheme) { | |
435 | case ATH_BTCOEX_CFG_NONE: | |
436 | break; | |
437 | case ATH_BTCOEX_CFG_2WIRE: | |
438 | ath9k_hw_btcoex_init_2wire(sc->sc_ah); | |
439 | break; | |
440 | case ATH_BTCOEX_CFG_3WIRE: | |
441 | ath9k_hw_btcoex_init_3wire(sc->sc_ah); | |
442 | r = ath_init_btcoex_timer(sc); | |
443 | if (r) | |
444 | return -1; | |
066dae93 FF |
445 | txq = sc->tx.txq_map[WME_AC_BE]; |
446 | ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum); | |
285f2dda S |
447 | sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; |
448 | break; | |
449 | default: | |
450 | WARN_ON(1); | |
451 | break; | |
452 | } | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | static int ath9k_init_queues(struct ath_softc *sc) | |
458 | { | |
285f2dda S |
459 | int i = 0; |
460 | ||
285f2dda | 461 | sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah); |
55624204 | 462 | sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); |
55624204 S |
463 | |
464 | sc->config.cabqReadytime = ATH_CABQ_READY_TIME; | |
465 | ath_cabq_update(sc); | |
466 | ||
60f2d1d5 | 467 | for (i = 0; i < WME_NUM_AC; i++) { |
066dae93 | 468 | sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i); |
60f2d1d5 BG |
469 | sc->tx.txq_map[i]->mac80211_qnum = i; |
470 | } | |
285f2dda | 471 | return 0; |
285f2dda S |
472 | } |
473 | ||
f209f529 | 474 | static int ath9k_init_channels_rates(struct ath_softc *sc) |
285f2dda | 475 | { |
f209f529 FF |
476 | void *channels; |
477 | ||
cac4220b FF |
478 | BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) + |
479 | ARRAY_SIZE(ath9k_5ghz_chantable) != | |
480 | ATH9K_NUM_CHANNELS); | |
481 | ||
d4659912 | 482 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) { |
f209f529 FF |
483 | channels = kmemdup(ath9k_2ghz_chantable, |
484 | sizeof(ath9k_2ghz_chantable), GFP_KERNEL); | |
485 | if (!channels) | |
486 | return -ENOMEM; | |
487 | ||
488 | sc->sbands[IEEE80211_BAND_2GHZ].channels = channels; | |
285f2dda S |
489 | sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; |
490 | sc->sbands[IEEE80211_BAND_2GHZ].n_channels = | |
491 | ARRAY_SIZE(ath9k_2ghz_chantable); | |
492 | sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates; | |
493 | sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates = | |
494 | ARRAY_SIZE(ath9k_legacy_rates); | |
55624204 S |
495 | } |
496 | ||
d4659912 | 497 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) { |
f209f529 FF |
498 | channels = kmemdup(ath9k_5ghz_chantable, |
499 | sizeof(ath9k_5ghz_chantable), GFP_KERNEL); | |
500 | if (!channels) { | |
501 | if (sc->sbands[IEEE80211_BAND_2GHZ].channels) | |
502 | kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels); | |
503 | return -ENOMEM; | |
504 | } | |
505 | ||
506 | sc->sbands[IEEE80211_BAND_5GHZ].channels = channels; | |
285f2dda S |
507 | sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; |
508 | sc->sbands[IEEE80211_BAND_5GHZ].n_channels = | |
509 | ARRAY_SIZE(ath9k_5ghz_chantable); | |
510 | sc->sbands[IEEE80211_BAND_5GHZ].bitrates = | |
511 | ath9k_legacy_rates + 4; | |
512 | sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates = | |
513 | ARRAY_SIZE(ath9k_legacy_rates) - 4; | |
514 | } | |
f209f529 | 515 | return 0; |
285f2dda | 516 | } |
55624204 | 517 | |
285f2dda S |
518 | static void ath9k_init_misc(struct ath_softc *sc) |
519 | { | |
520 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
521 | int i = 0; | |
522 | ||
285f2dda | 523 | setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc); |
55624204 S |
524 | |
525 | sc->config.txpowlimit = ATH_TXPOWER_MAX; | |
526 | ||
285f2dda | 527 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { |
55624204 S |
528 | sc->sc_flags |= SC_OP_TXAGGR; |
529 | sc->sc_flags |= SC_OP_RXAGGR; | |
530 | } | |
531 | ||
285f2dda S |
532 | common->tx_chainmask = sc->sc_ah->caps.tx_chainmask; |
533 | common->rx_chainmask = sc->sc_ah->caps.rx_chainmask; | |
55624204 | 534 | |
8fe65368 | 535 | ath9k_hw_set_diversity(sc->sc_ah, true); |
285f2dda | 536 | sc->rx.defant = ath9k_hw_getdefantenna(sc->sc_ah); |
55624204 | 537 | |
364734fa | 538 | memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN); |
55624204 | 539 | |
285f2dda | 540 | sc->beacon.slottime = ATH9K_SLOT_TIME_9; |
55624204 | 541 | |
7545daf4 | 542 | for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) |
55624204 | 543 | sc->beacon.bslot[i] = NULL; |
102885a5 VT |
544 | |
545 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) | |
546 | sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT; | |
285f2dda | 547 | } |
55624204 | 548 | |
285f2dda S |
549 | static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid, |
550 | const struct ath_bus_ops *bus_ops) | |
551 | { | |
6fb1b1e1 | 552 | struct ath9k_platform_data *pdata = sc->dev->platform_data; |
285f2dda S |
553 | struct ath_hw *ah = NULL; |
554 | struct ath_common *common; | |
555 | int ret = 0, i; | |
556 | int csz = 0; | |
55624204 | 557 | |
285f2dda S |
558 | ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL); |
559 | if (!ah) | |
560 | return -ENOMEM; | |
561 | ||
233536e1 | 562 | ah->hw = sc->hw; |
285f2dda S |
563 | ah->hw_version.devid = devid; |
564 | ah->hw_version.subsysid = subsysid; | |
f9f84e96 FF |
565 | ah->reg_ops.read = ath9k_ioread32; |
566 | ah->reg_ops.write = ath9k_iowrite32; | |
845e03c9 | 567 | ah->reg_ops.rmw = ath9k_reg_rmw; |
285f2dda S |
568 | sc->sc_ah = ah; |
569 | ||
6de66dd9 | 570 | if (!pdata) { |
a05b5d45 | 571 | ah->ah_flags |= AH_USE_EEPROM; |
6de66dd9 FF |
572 | sc->sc_ah->led_pin = -1; |
573 | } else { | |
574 | sc->sc_ah->gpio_mask = pdata->gpio_mask; | |
575 | sc->sc_ah->gpio_val = pdata->gpio_val; | |
576 | sc->sc_ah->led_pin = pdata->led_pin; | |
577 | } | |
a05b5d45 | 578 | |
285f2dda | 579 | common = ath9k_hw_common(ah); |
f9f84e96 | 580 | common->ops = &ah->reg_ops; |
285f2dda S |
581 | common->bus_ops = bus_ops; |
582 | common->ah = ah; | |
583 | common->hw = sc->hw; | |
584 | common->priv = sc; | |
585 | common->debug_mask = ath9k_debug; | |
8f5dcb1c | 586 | common->btcoex_enabled = ath9k_btcoex_enable == 1; |
20b25744 | 587 | spin_lock_init(&common->cc_lock); |
285f2dda | 588 | |
285f2dda S |
589 | spin_lock_init(&sc->sc_serial_rw); |
590 | spin_lock_init(&sc->sc_pm_lock); | |
591 | mutex_init(&sc->mutex); | |
7f010c93 BG |
592 | #ifdef CONFIG_ATH9K_DEBUGFS |
593 | spin_lock_init(&sc->nodes_lock); | |
594 | INIT_LIST_HEAD(&sc->nodes); | |
595 | #endif | |
285f2dda S |
596 | tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); |
597 | tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet, | |
598 | (unsigned long)sc); | |
599 | ||
600 | /* | |
601 | * Cache line size is used to size and align various | |
602 | * structures used to communicate with the hardware. | |
603 | */ | |
604 | ath_read_cachesize(common, &csz); | |
605 | common->cachelsz = csz << 2; /* convert to bytes */ | |
606 | ||
d70357d5 | 607 | /* Initializes the hardware for all supported chipsets */ |
285f2dda | 608 | ret = ath9k_hw_init(ah); |
d70357d5 | 609 | if (ret) |
285f2dda | 610 | goto err_hw; |
55624204 | 611 | |
6fb1b1e1 FF |
612 | if (pdata && pdata->macaddr) |
613 | memcpy(common->macaddr, pdata->macaddr, ETH_ALEN); | |
614 | ||
285f2dda S |
615 | ret = ath9k_init_queues(sc); |
616 | if (ret) | |
617 | goto err_queues; | |
618 | ||
619 | ret = ath9k_init_btcoex(sc); | |
620 | if (ret) | |
621 | goto err_btcoex; | |
622 | ||
f209f529 FF |
623 | ret = ath9k_init_channels_rates(sc); |
624 | if (ret) | |
625 | goto err_btcoex; | |
626 | ||
285f2dda | 627 | ath9k_init_crypto(sc); |
285f2dda S |
628 | ath9k_init_misc(sc); |
629 | ||
55624204 | 630 | return 0; |
285f2dda S |
631 | |
632 | err_btcoex: | |
55624204 S |
633 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) |
634 | if (ATH_TXQ_SETUP(sc, i)) | |
635 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
285f2dda | 636 | err_queues: |
285f2dda S |
637 | ath9k_hw_deinit(ah); |
638 | err_hw: | |
55624204 | 639 | |
285f2dda S |
640 | kfree(ah); |
641 | sc->sc_ah = NULL; | |
642 | ||
643 | return ret; | |
55624204 S |
644 | } |
645 | ||
babcbc29 FF |
646 | static void ath9k_init_band_txpower(struct ath_softc *sc, int band) |
647 | { | |
648 | struct ieee80211_supported_band *sband; | |
649 | struct ieee80211_channel *chan; | |
650 | struct ath_hw *ah = sc->sc_ah; | |
651 | struct ath_regulatory *reg = ath9k_hw_regulatory(ah); | |
652 | int i; | |
653 | ||
654 | sband = &sc->sbands[band]; | |
655 | for (i = 0; i < sband->n_channels; i++) { | |
656 | chan = &sband->channels[i]; | |
657 | ah->curchan = &ah->channels[chan->hw_value]; | |
658 | ath9k_cmn_update_ichannel(ah->curchan, chan, NL80211_CHAN_HT20); | |
659 | ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true); | |
660 | chan->max_power = reg->max_power_level / 2; | |
661 | } | |
662 | } | |
663 | ||
664 | static void ath9k_init_txpower_limits(struct ath_softc *sc) | |
665 | { | |
666 | struct ath_hw *ah = sc->sc_ah; | |
667 | struct ath9k_channel *curchan = ah->curchan; | |
668 | ||
669 | if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) | |
670 | ath9k_init_band_txpower(sc, IEEE80211_BAND_2GHZ); | |
671 | if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) | |
672 | ath9k_init_band_txpower(sc, IEEE80211_BAND_5GHZ); | |
673 | ||
674 | ah->curchan = curchan; | |
675 | } | |
676 | ||
285f2dda | 677 | void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) |
55624204 | 678 | { |
285f2dda S |
679 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
680 | ||
55624204 S |
681 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
682 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | | |
683 | IEEE80211_HW_SIGNAL_DBM | | |
55624204 S |
684 | IEEE80211_HW_SUPPORTS_PS | |
685 | IEEE80211_HW_PS_NULLFUNC_STACK | | |
05df4986 | 686 | IEEE80211_HW_SPECTRUM_MGMT | |
bd8027a7 | 687 | IEEE80211_HW_REPORTS_TX_ACK_STATUS; |
55624204 | 688 | |
5ffaf8a3 LR |
689 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) |
690 | hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; | |
691 | ||
3e6109c5 | 692 | if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt) |
55624204 S |
693 | hw->flags |= IEEE80211_HW_MFP_CAPABLE; |
694 | ||
695 | hw->wiphy->interface_modes = | |
c426ee24 JB |
696 | BIT(NL80211_IFTYPE_P2P_GO) | |
697 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
55624204 | 698 | BIT(NL80211_IFTYPE_AP) | |
e51f3eff | 699 | BIT(NL80211_IFTYPE_WDS) | |
55624204 S |
700 | BIT(NL80211_IFTYPE_STATION) | |
701 | BIT(NL80211_IFTYPE_ADHOC) | | |
702 | BIT(NL80211_IFTYPE_MESH_POINT); | |
703 | ||
008443de LR |
704 | if (AR_SREV_5416(sc->sc_ah)) |
705 | hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
55624204 | 706 | |
cfdc9a8b JM |
707 | hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; |
708 | ||
55624204 S |
709 | hw->queues = 4; |
710 | hw->max_rates = 4; | |
711 | hw->channel_change_time = 5000; | |
712 | hw->max_listen_interval = 10; | |
65896510 | 713 | hw->max_rate_tries = 10; |
55624204 S |
714 | hw->sta_data_size = sizeof(struct ath_node); |
715 | hw->vif_data_size = sizeof(struct ath_vif); | |
716 | ||
6e5c2b4e | 717 | #ifdef CONFIG_ATH9K_RATE_CONTROL |
55624204 | 718 | hw->rate_control_algorithm = "ath9k_rate_control"; |
6e5c2b4e | 719 | #endif |
55624204 | 720 | |
d4659912 | 721 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) |
55624204 S |
722 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
723 | &sc->sbands[IEEE80211_BAND_2GHZ]; | |
d4659912 | 724 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) |
55624204 S |
725 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
726 | &sc->sbands[IEEE80211_BAND_5GHZ]; | |
285f2dda S |
727 | |
728 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { | |
d4659912 | 729 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) |
285f2dda | 730 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap); |
d4659912 | 731 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) |
285f2dda S |
732 | setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap); |
733 | } | |
734 | ||
735 | SET_IEEE80211_PERM_ADDR(hw, common->macaddr); | |
55624204 S |
736 | } |
737 | ||
285f2dda | 738 | int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid, |
55624204 S |
739 | const struct ath_bus_ops *bus_ops) |
740 | { | |
741 | struct ieee80211_hw *hw = sc->hw; | |
742 | struct ath_common *common; | |
743 | struct ath_hw *ah; | |
285f2dda | 744 | int error = 0; |
55624204 S |
745 | struct ath_regulatory *reg; |
746 | ||
285f2dda S |
747 | /* Bring up device */ |
748 | error = ath9k_init_softc(devid, sc, subsysid, bus_ops); | |
55624204 | 749 | if (error != 0) |
285f2dda | 750 | goto error_init; |
55624204 S |
751 | |
752 | ah = sc->sc_ah; | |
753 | common = ath9k_hw_common(ah); | |
285f2dda | 754 | ath9k_set_hw_capab(sc, hw); |
55624204 | 755 | |
285f2dda | 756 | /* Initialize regulatory */ |
55624204 S |
757 | error = ath_regd_init(&common->regulatory, sc->hw->wiphy, |
758 | ath9k_reg_notifier); | |
759 | if (error) | |
285f2dda | 760 | goto error_regd; |
55624204 S |
761 | |
762 | reg = &common->regulatory; | |
763 | ||
285f2dda | 764 | /* Setup TX DMA */ |
55624204 S |
765 | error = ath_tx_init(sc, ATH_TXBUF); |
766 | if (error != 0) | |
285f2dda | 767 | goto error_tx; |
55624204 | 768 | |
285f2dda | 769 | /* Setup RX DMA */ |
55624204 S |
770 | error = ath_rx_init(sc, ATH_RXBUF); |
771 | if (error != 0) | |
285f2dda | 772 | goto error_rx; |
55624204 | 773 | |
babcbc29 FF |
774 | ath9k_init_txpower_limits(sc); |
775 | ||
0cf55c21 FF |
776 | #ifdef CONFIG_MAC80211_LEDS |
777 | /* must be initialized before ieee80211_register_hw */ | |
778 | sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw, | |
779 | IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink, | |
780 | ARRAY_SIZE(ath9k_tpt_blink)); | |
781 | #endif | |
782 | ||
285f2dda | 783 | /* Register with mac80211 */ |
55624204 | 784 | error = ieee80211_register_hw(hw); |
285f2dda S |
785 | if (error) |
786 | goto error_register; | |
55624204 | 787 | |
eb272441 BG |
788 | error = ath9k_init_debug(ah); |
789 | if (error) { | |
3800276a | 790 | ath_err(common, "Unable to create debugfs files\n"); |
eb272441 BG |
791 | goto error_world; |
792 | } | |
793 | ||
285f2dda | 794 | /* Handle world regulatory */ |
55624204 S |
795 | if (!ath_is_world_regd(reg)) { |
796 | error = regulatory_hint(hw->wiphy, reg->alpha2); | |
797 | if (error) | |
285f2dda | 798 | goto error_world; |
55624204 S |
799 | } |
800 | ||
347809fc | 801 | INIT_WORK(&sc->hw_check_work, ath_hw_check); |
9f42c2b6 | 802 | INIT_WORK(&sc->paprd_work, ath_paprd_calibrate); |
9ac58615 | 803 | sc->last_rssi = ATH_RSSI_DUMMY_MARKER; |
55624204 | 804 | |
285f2dda | 805 | ath_init_leds(sc); |
55624204 S |
806 | ath_start_rfkill_poll(sc); |
807 | ||
808 | return 0; | |
809 | ||
285f2dda S |
810 | error_world: |
811 | ieee80211_unregister_hw(hw); | |
812 | error_register: | |
813 | ath_rx_cleanup(sc); | |
814 | error_rx: | |
815 | ath_tx_cleanup(sc); | |
816 | error_tx: | |
817 | /* Nothing */ | |
818 | error_regd: | |
819 | ath9k_deinit_softc(sc); | |
820 | error_init: | |
55624204 S |
821 | return error; |
822 | } | |
823 | ||
824 | /*****************************/ | |
825 | /* De-Initialization */ | |
826 | /*****************************/ | |
827 | ||
285f2dda | 828 | static void ath9k_deinit_softc(struct ath_softc *sc) |
55624204 | 829 | { |
285f2dda | 830 | int i = 0; |
55624204 | 831 | |
f209f529 FF |
832 | if (sc->sbands[IEEE80211_BAND_2GHZ].channels) |
833 | kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels); | |
834 | ||
835 | if (sc->sbands[IEEE80211_BAND_5GHZ].channels) | |
836 | kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels); | |
837 | ||
285f2dda S |
838 | if ((sc->btcoex.no_stomp_timer) && |
839 | sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) | |
840 | ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer); | |
55624204 | 841 | |
285f2dda S |
842 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) |
843 | if (ATH_TXQ_SETUP(sc, i)) | |
844 | ath_tx_cleanupq(sc, &sc->tx.txq[i]); | |
845 | ||
285f2dda S |
846 | ath9k_hw_deinit(sc->sc_ah); |
847 | ||
736b3a27 S |
848 | kfree(sc->sc_ah); |
849 | sc->sc_ah = NULL; | |
55624204 S |
850 | } |
851 | ||
285f2dda | 852 | void ath9k_deinit_device(struct ath_softc *sc) |
55624204 S |
853 | { |
854 | struct ieee80211_hw *hw = sc->hw; | |
55624204 S |
855 | |
856 | ath9k_ps_wakeup(sc); | |
857 | ||
55624204 | 858 | wiphy_rfkill_stop_polling(sc->hw->wiphy); |
285f2dda | 859 | ath_deinit_leds(sc); |
55624204 | 860 | |
c7c18060 RM |
861 | ath9k_ps_restore(sc); |
862 | ||
55624204 S |
863 | ieee80211_unregister_hw(hw); |
864 | ath_rx_cleanup(sc); | |
865 | ath_tx_cleanup(sc); | |
285f2dda | 866 | ath9k_deinit_softc(sc); |
55624204 S |
867 | } |
868 | ||
869 | void ath_descdma_cleanup(struct ath_softc *sc, | |
870 | struct ath_descdma *dd, | |
871 | struct list_head *head) | |
872 | { | |
873 | dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, | |
874 | dd->dd_desc_paddr); | |
875 | ||
876 | INIT_LIST_HEAD(head); | |
877 | kfree(dd->dd_bufptr); | |
878 | memset(dd, 0, sizeof(*dd)); | |
879 | } | |
880 | ||
55624204 S |
881 | /************************/ |
882 | /* Module Hooks */ | |
883 | /************************/ | |
884 | ||
885 | static int __init ath9k_init(void) | |
886 | { | |
887 | int error; | |
888 | ||
889 | /* Register rate control algorithm */ | |
890 | error = ath_rate_control_register(); | |
891 | if (error != 0) { | |
892 | printk(KERN_ERR | |
893 | "ath9k: Unable to register rate control " | |
894 | "algorithm: %d\n", | |
895 | error); | |
896 | goto err_out; | |
897 | } | |
898 | ||
55624204 S |
899 | error = ath_pci_init(); |
900 | if (error < 0) { | |
901 | printk(KERN_ERR | |
902 | "ath9k: No PCI devices found, driver not installed.\n"); | |
903 | error = -ENODEV; | |
eb272441 | 904 | goto err_rate_unregister; |
55624204 S |
905 | } |
906 | ||
907 | error = ath_ahb_init(); | |
908 | if (error < 0) { | |
909 | error = -ENODEV; | |
910 | goto err_pci_exit; | |
911 | } | |
912 | ||
913 | return 0; | |
914 | ||
915 | err_pci_exit: | |
916 | ath_pci_exit(); | |
917 | ||
55624204 S |
918 | err_rate_unregister: |
919 | ath_rate_control_unregister(); | |
920 | err_out: | |
921 | return error; | |
922 | } | |
923 | module_init(ath9k_init); | |
924 | ||
925 | static void __exit ath9k_exit(void) | |
926 | { | |
d584747b | 927 | is_ath9k_unloaded = true; |
55624204 S |
928 | ath_ahb_exit(); |
929 | ath_pci_exit(); | |
55624204 S |
930 | ath_rate_control_unregister(); |
931 | printk(KERN_INFO "%s: Driver unloaded\n", dev_info); | |
932 | } | |
933 | module_exit(ath9k_exit); |