1 /*
2 * Copyright (c) 2008-2011 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
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/dma-mapping.h>
20 #include <linux/slab.h>
21 #include <linux/ath9k_platform.h>
22 #include <linux/module.h>
23 #include <linux/of.h>
24 #include <linux/of_net.h>
25 #include <linux/relay.h>
26 #include <linux/dmi.h>
27 #include <net/ieee80211_radiotap.h>
28
29 #include "ath9k.h"
30
31 struct ath9k_eeprom_ctx {
32 struct completion complete;
33 struct ath_hw *ah;
34 };
35
36 static char *dev_info = "ath9k";
37
38 MODULE_AUTHOR("Atheros Communications");
39 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
40 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
41 MODULE_LICENSE("Dual BSD/GPL");
42
43 static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
44 module_param_named(debug, ath9k_debug, uint, 0);
45 MODULE_PARM_DESC(debug, "Debugging mask");
46
47 int ath9k_modparam_nohwcrypt;
48 module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444);
49 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
50
51 int ath9k_led_blink;
52 module_param_named(blink, ath9k_led_blink, int, 0444);
53 MODULE_PARM_DESC(blink, "Enable LED blink on activity");
54
55 static int ath9k_led_active_high = -1;
56 module_param_named(led_active_high, ath9k_led_active_high, int, 0444);
57 MODULE_PARM_DESC(led_active_high, "Invert LED polarity");
58
59 static int ath9k_btcoex_enable;
60 module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444);
61 MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");
62
63 static int ath9k_bt_ant_diversity;
64 module_param_named(bt_ant_diversity, ath9k_bt_ant_diversity, int, 0444);
65 MODULE_PARM_DESC(bt_ant_diversity, "Enable WLAN/BT RX antenna diversity");
66
67 static int ath9k_ps_enable;
68 module_param_named(ps_enable, ath9k_ps_enable, int, 0444);
69 MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave");
70
71 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
72
73 int ath9k_use_chanctx;
74 module_param_named(use_chanctx, ath9k_use_chanctx, int, 0444);
75 MODULE_PARM_DESC(use_chanctx, "Enable channel context for concurrency");
76
77 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
78
79 int ath9k_use_msi;
80 module_param_named(use_msi, ath9k_use_msi, int, 0444);
81 MODULE_PARM_DESC(use_msi, "Use MSI instead of INTx if possible");
82
83 bool is_ath9k_unloaded;
84
85 #ifdef CONFIG_MAC80211_LEDS
86 static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = {
87 { .throughput = 0 * 1024, .blink_time = 334 },
88 { .throughput = 1 * 1024, .blink_time = 260 },
89 { .throughput = 5 * 1024, .blink_time = 220 },
90 { .throughput = 10 * 1024, .blink_time = 190 },
91 { .throughput = 20 * 1024, .blink_time = 170 },
92 { .throughput = 50 * 1024, .blink_time = 150 },
93 { .throughput = 70 * 1024, .blink_time = 130 },
94 { .throughput = 100 * 1024, .blink_time = 110 },
95 { .throughput = 200 * 1024, .blink_time = 80 },
96 { .throughput = 300 * 1024, .blink_time = 50 },
97 };
98 #endif
99
set_use_msi(const struct dmi_system_id * dmi)100 static int __init set_use_msi(const struct dmi_system_id *dmi)
101 {
102 ath9k_use_msi = 1;
103 return 1;
104 }
105
106 static const struct dmi_system_id ath9k_quirks[] __initconst = {
107 {
108 .callback = set_use_msi,
109 .ident = "Dell Inspiron 24-3460",
110 .matches = {
111 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
112 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 24-3460"),
113 },
114 },
115 {
116 .callback = set_use_msi,
117 .ident = "Dell Vostro 3262",
118 .matches = {
119 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
120 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3262"),
121 },
122 },
123 {
124 .callback = set_use_msi,
125 .ident = "Dell Inspiron 3472",
126 .matches = {
127 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
128 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3472"),
129 },
130 },
131 {
132 .callback = set_use_msi,
133 .ident = "Dell Vostro 15-3572",
134 .matches = {
135 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
136 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15-3572"),
137 },
138 },
139 {
140 .callback = set_use_msi,
141 .ident = "Dell Inspiron 14-3473",
142 .matches = {
143 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
144 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 14-3473"),
145 },
146 },
147 {}
148 };
149
150 static void ath9k_deinit_softc(struct ath_softc *sc);
151
ath9k_op_ps_wakeup(struct ath_common * common)152 static void ath9k_op_ps_wakeup(struct ath_common *common)
153 {
154 ath9k_ps_wakeup((struct ath_softc *) common->priv);
155 }
156
ath9k_op_ps_restore(struct ath_common * common)157 static void ath9k_op_ps_restore(struct ath_common *common)
158 {
159 ath9k_ps_restore((struct ath_softc *) common->priv);
160 }
161
162 static const struct ath_ps_ops ath9k_ps_ops = {
163 .wakeup = ath9k_op_ps_wakeup,
164 .restore = ath9k_op_ps_restore,
165 };
166
167 /*
168 * Read and write, they both share the same lock. We do this to serialize
169 * reads and writes on Atheros 802.11n PCI devices only. This is required
170 * as the FIFO on these devices can only accept sanely 2 requests.
171 */
172
ath9k_iowrite32(void * hw_priv,u32 val,u32 reg_offset)173 static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset)
174 {
175 struct ath_hw *ah = hw_priv;
176 struct ath_common *common = ath9k_hw_common(ah);
177 struct ath_softc *sc = (struct ath_softc *) common->priv;
178
179 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
180 unsigned long flags;
181 spin_lock_irqsave(&sc->sc_serial_rw, flags);
182 iowrite32(val, sc->mem + reg_offset);
183 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
184 } else
185 iowrite32(val, sc->mem + reg_offset);
186 }
187
ath9k_ioread32(void * hw_priv,u32 reg_offset)188 static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset)
189 {
190 struct ath_hw *ah = hw_priv;
191 struct ath_common *common = ath9k_hw_common(ah);
192 struct ath_softc *sc = (struct ath_softc *) common->priv;
193 u32 val;
194
195 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
196 unsigned long flags;
197 spin_lock_irqsave(&sc->sc_serial_rw, flags);
198 val = ioread32(sc->mem + reg_offset);
199 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
200 } else
201 val = ioread32(sc->mem + reg_offset);
202 return val;
203 }
204
ath9k_multi_ioread32(void * hw_priv,u32 * addr,u32 * val,u16 count)205 static void ath9k_multi_ioread32(void *hw_priv, u32 *addr,
206 u32 *val, u16 count)
207 {
208 int i;
209
210 for (i = 0; i < count; i++)
211 val[i] = ath9k_ioread32(hw_priv, addr[i]);
212 }
213
214
__ath9k_reg_rmw(struct ath_softc * sc,u32 reg_offset,u32 set,u32 clr)215 static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset,
216 u32 set, u32 clr)
217 {
218 u32 val;
219
220 val = ioread32(sc->mem + reg_offset);
221 val &= ~clr;
222 val |= set;
223 iowrite32(val, sc->mem + reg_offset);
224
225 return val;
226 }
227
ath9k_reg_rmw(void * hw_priv,u32 reg_offset,u32 set,u32 clr)228 static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
229 {
230 struct ath_hw *ah = hw_priv;
231 struct ath_common *common = ath9k_hw_common(ah);
232 struct ath_softc *sc = (struct ath_softc *) common->priv;
233 unsigned long flags;
234 u32 val;
235
236 if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
237 spin_lock_irqsave(&sc->sc_serial_rw, flags);
238 val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
239 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
240 } else
241 val = __ath9k_reg_rmw(sc, reg_offset, set, clr);
242
243 return val;
244 }
245
246 /**************************/
247 /* Initialization */
248 /**************************/
249
ath9k_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)250 static void ath9k_reg_notifier(struct wiphy *wiphy,
251 struct regulatory_request *request)
252 {
253 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
254 struct ath_softc *sc = hw->priv;
255 struct ath_hw *ah = sc->sc_ah;
256 struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
257
258 ath_reg_notifier_apply(wiphy, request, reg);
259
260 /* synchronize DFS detector if regulatory domain changed */
261 if (sc->dfs_detector != NULL)
262 sc->dfs_detector->set_dfs_domain(sc->dfs_detector,
263 request->dfs_region);
264
265 /* Set tx power */
266 if (!ah->curchan)
267 return;
268
269 sc->cur_chan->txpower = 2 * ah->curchan->chan->max_power;
270 ath9k_ps_wakeup(sc);
271 ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);
272 ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower,
273 sc->cur_chan->txpower,
274 &sc->cur_chan->cur_txpower);
275 ath9k_ps_restore(sc);
276 }
277
278 /*
279 * This function will allocate both the DMA descriptor structure, and the
280 * buffers it contains. These are used to contain the descriptors used
281 * by the system.
282 */
ath_descdma_setup(struct ath_softc * sc,struct ath_descdma * dd,struct list_head * head,const char * name,int nbuf,int ndesc,bool is_tx)283 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
284 struct list_head *head, const char *name,
285 int nbuf, int ndesc, bool is_tx)
286 {
287 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
288 u8 *ds;
289 int i, bsize, desc_len;
290
291 ath_dbg(common, CONFIG, "%s DMA: %u buffers %u desc/buf\n",
292 name, nbuf, ndesc);
293
294 INIT_LIST_HEAD(head);
295
296 if (is_tx)
297 desc_len = sc->sc_ah->caps.tx_desc_len;
298 else
299 desc_len = sizeof(struct ath_desc);
300
301 /* ath_desc must be a multiple of DWORDs */
302 if ((desc_len % 4) != 0) {
303 ath_err(common, "ath_desc not DWORD aligned\n");
304 BUG_ON((desc_len % 4) != 0);
305 return -ENOMEM;
306 }
307
308 dd->dd_desc_len = desc_len * nbuf * ndesc;
309
310 /*
311 * Need additional DMA memory because we can't use
312 * descriptors that cross the 4K page boundary. Assume
313 * one skipped descriptor per 4K page.
314 */
315 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
316 u32 ndesc_skipped =
317 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
318 u32 dma_len;
319
320 while (ndesc_skipped) {
321 dma_len = ndesc_skipped * desc_len;
322 dd->dd_desc_len += dma_len;
323
324 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
325 }
326 }
327
328 /* allocate descriptors */
329 dd->dd_desc = dmam_alloc_coherent(sc->dev, dd->dd_desc_len,
330 &dd->dd_desc_paddr, GFP_KERNEL);
331 if (!dd->dd_desc)
332 return -ENOMEM;
333
334 ds = dd->dd_desc;
335 ath_dbg(common, CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
336 name, ds, (u32) dd->dd_desc_len,
337 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
338
339 /* allocate buffers */
340 if (is_tx) {
341 struct ath_buf *bf;
342
343 bsize = sizeof(struct ath_buf) * nbuf;
344 bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL);
345 if (!bf)
346 return -ENOMEM;
347
348 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
349 bf->bf_desc = ds;
350 bf->bf_daddr = DS2PHYS(dd, ds);
351
352 if (!(sc->sc_ah->caps.hw_caps &
353 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
354 /*
355 * Skip descriptor addresses which can cause 4KB
356 * boundary crossing (addr + length) with a 32 dword
357 * descriptor fetch.
358 */
359 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
360 BUG_ON((caddr_t) bf->bf_desc >=
361 ((caddr_t) dd->dd_desc +
362 dd->dd_desc_len));
363
364 ds += (desc_len * ndesc);
365 bf->bf_desc = ds;
366 bf->bf_daddr = DS2PHYS(dd, ds);
367 }
368 }
369 list_add_tail(&bf->list, head);
370 }
371 } else {
372 struct ath_rxbuf *bf;
373
374 bsize = sizeof(struct ath_rxbuf) * nbuf;
375 bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL);
376 if (!bf)
377 return -ENOMEM;
378
379 for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
380 bf->bf_desc = ds;
381 bf->bf_daddr = DS2PHYS(dd, ds);
382
383 if (!(sc->sc_ah->caps.hw_caps &
384 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
385 /*
386 * Skip descriptor addresses which can cause 4KB
387 * boundary crossing (addr + length) with a 32 dword
388 * descriptor fetch.
389 */
390 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
391 BUG_ON((caddr_t) bf->bf_desc >=
392 ((caddr_t) dd->dd_desc +
393 dd->dd_desc_len));
394
395 ds += (desc_len * ndesc);
396 bf->bf_desc = ds;
397 bf->bf_daddr = DS2PHYS(dd, ds);
398 }
399 }
400 list_add_tail(&bf->list, head);
401 }
402 }
403 return 0;
404 }
405
ath9k_init_queues(struct ath_softc * sc)406 static int ath9k_init_queues(struct ath_softc *sc)
407 {
408 int i = 0;
409
410 sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah);
411 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
412 ath_cabq_update(sc);
413
414 sc->tx.uapsdq = ath_txq_setup(sc, ATH9K_TX_QUEUE_UAPSD, 0);
415
416 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
417 sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i);
418 sc->tx.txq_map[i]->mac80211_qnum = i;
419 }
420 return 0;
421 }
422
ath9k_init_misc(struct ath_softc * sc)423 static void ath9k_init_misc(struct ath_softc *sc)
424 {
425 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
426 int i = 0;
427
428 timer_setup(&common->ani.timer, ath_ani_calibrate, 0);
429
430 common->last_rssi = ATH_RSSI_DUMMY_MARKER;
431 eth_broadcast_addr(common->bssidmask);
432 sc->beacon.slottime = 9;
433
434 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++)
435 sc->beacon.bslot[i] = NULL;
436
437 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
438 sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT;
439
440 sc->spec_priv.ah = sc->sc_ah;
441 sc->spec_priv.spec_config.enabled = 0;
442 sc->spec_priv.spec_config.short_repeat = true;
443 sc->spec_priv.spec_config.count = 8;
444 sc->spec_priv.spec_config.endless = false;
445 sc->spec_priv.spec_config.period = 0xFF;
446 sc->spec_priv.spec_config.fft_period = 0xF;
447 }
448
ath9k_init_pcoem_platform(struct ath_softc * sc)449 static void ath9k_init_pcoem_platform(struct ath_softc *sc)
450 {
451 struct ath_hw *ah = sc->sc_ah;
452 struct ath9k_hw_capabilities *pCap = &ah->caps;
453 struct ath_common *common = ath9k_hw_common(ah);
454
455 if (!IS_ENABLED(CONFIG_ATH9K_PCOEM))
456 return;
457
458 if (common->bus_ops->ath_bus_type != ATH_PCI)
459 return;
460
461 if (sc->driver_data & (ATH9K_PCI_CUS198 |
462 ATH9K_PCI_CUS230)) {
463 ah->config.xlna_gpio = 9;
464 ah->config.xatten_margin_cfg = true;
465 ah->config.alt_mingainidx = true;
466 ah->config.ant_ctrl_comm2g_switch_enable = 0x000BBB88;
467 sc->ant_comb.low_rssi_thresh = 20;
468 sc->ant_comb.fast_div_bias = 3;
469
470 ath_info(common, "Set parameters for %s\n",
471 (sc->driver_data & ATH9K_PCI_CUS198) ?
472 "CUS198" : "CUS230");
473 }
474
475 if (sc->driver_data & ATH9K_PCI_CUS217)
476 ath_info(common, "CUS217 card detected\n");
477
478 if (sc->driver_data & ATH9K_PCI_CUS252)
479 ath_info(common, "CUS252 card detected\n");
480
481 if (sc->driver_data & ATH9K_PCI_AR9565_1ANT)
482 ath_info(common, "WB335 1-ANT card detected\n");
483
484 if (sc->driver_data & ATH9K_PCI_AR9565_2ANT)
485 ath_info(common, "WB335 2-ANT card detected\n");
486
487 if (sc->driver_data & ATH9K_PCI_KILLER)
488 ath_info(common, "Killer Wireless card detected\n");
489
490 /*
491 * Some WB335 cards do not support antenna diversity. Since
492 * we use a hardcoded value for AR9565 instead of using the
493 * EEPROM/OTP data, remove the combining feature from
494 * the HW capabilities bitmap.
495 */
496 if (sc->driver_data & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) {
497 if (!(sc->driver_data & ATH9K_PCI_BT_ANT_DIV))
498 pCap->hw_caps &= ~ATH9K_HW_CAP_ANT_DIV_COMB;
499 }
500
501 if (sc->driver_data & ATH9K_PCI_BT_ANT_DIV) {
502 pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV;
503 ath_info(common, "Set BT/WLAN RX diversity capability\n");
504 }
505
506 if (sc->driver_data & ATH9K_PCI_D3_L1_WAR) {
507 ah->config.pcie_waen = 0x0040473b;
508 ath_info(common, "Enable WAR for ASPM D3/L1\n");
509 }
510
511 /*
512 * The default value of pll_pwrsave is 1.
513 * For certain AR9485 cards, it is set to 0.
514 * For AR9462, AR9565 it's set to 7.
515 */
516 ah->config.pll_pwrsave = 1;
517
518 if (sc->driver_data & ATH9K_PCI_NO_PLL_PWRSAVE) {
519 ah->config.pll_pwrsave = 0;
520 ath_info(common, "Disable PLL PowerSave\n");
521 }
522
523 if (sc->driver_data & ATH9K_PCI_LED_ACT_HI)
524 ah->config.led_active_high = true;
525 }
526
ath9k_eeprom_request_cb(const struct firmware * eeprom_blob,void * ctx)527 static void ath9k_eeprom_request_cb(const struct firmware *eeprom_blob,
528 void *ctx)
529 {
530 struct ath9k_eeprom_ctx *ec = ctx;
531
532 if (eeprom_blob)
533 ec->ah->eeprom_blob = eeprom_blob;
534
535 complete(&ec->complete);
536 }
537
ath9k_eeprom_request(struct ath_softc * sc,const char * name)538 static int ath9k_eeprom_request(struct ath_softc *sc, const char *name)
539 {
540 struct ath9k_eeprom_ctx ec;
541 struct ath_hw *ah = sc->sc_ah;
542 int err;
543
544 /* try to load the EEPROM content asynchronously */
545 init_completion(&ec.complete);
546 ec.ah = sc->sc_ah;
547
548 err = request_firmware_nowait(THIS_MODULE, 1, name, sc->dev, GFP_KERNEL,
549 &ec, ath9k_eeprom_request_cb);
550 if (err < 0) {
551 ath_err(ath9k_hw_common(ah),
552 "EEPROM request failed\n");
553 return err;
554 }
555
556 wait_for_completion(&ec.complete);
557
558 if (!ah->eeprom_blob) {
559 ath_err(ath9k_hw_common(ah),
560 "Unable to load EEPROM file %s\n", name);
561 return -EINVAL;
562 }
563
564 return 0;
565 }
566
ath9k_eeprom_release(struct ath_softc * sc)567 static void ath9k_eeprom_release(struct ath_softc *sc)
568 {
569 release_firmware(sc->sc_ah->eeprom_blob);
570 }
571
ath9k_init_platform(struct ath_softc * sc)572 static int ath9k_init_platform(struct ath_softc *sc)
573 {
574 struct ath9k_platform_data *pdata = sc->dev->platform_data;
575 struct ath_hw *ah = sc->sc_ah;
576 struct ath_common *common = ath9k_hw_common(ah);
577 int ret;
578
579 if (!pdata)
580 return 0;
581
582 if (!pdata->use_eeprom) {
583 ah->ah_flags &= ~AH_USE_EEPROM;
584 ah->gpio_mask = pdata->gpio_mask;
585 ah->gpio_val = pdata->gpio_val;
586 ah->led_pin = pdata->led_pin;
587 ah->is_clk_25mhz = pdata->is_clk_25mhz;
588 ah->get_mac_revision = pdata->get_mac_revision;
589 ah->external_reset = pdata->external_reset;
590 ah->disable_2ghz = pdata->disable_2ghz;
591 ah->disable_5ghz = pdata->disable_5ghz;
592
593 if (!pdata->endian_check)
594 ah->ah_flags |= AH_NO_EEP_SWAP;
595 }
596
597 if (pdata->eeprom_name) {
598 ret = ath9k_eeprom_request(sc, pdata->eeprom_name);
599 if (ret)
600 return ret;
601 }
602
603 if (pdata->led_active_high)
604 ah->config.led_active_high = true;
605
606 if (pdata->tx_gain_buffalo)
607 ah->config.tx_gain_buffalo = true;
608
609 if (pdata->macaddr)
610 ether_addr_copy(common->macaddr, pdata->macaddr);
611
612 return 0;
613 }
614
ath9k_of_init(struct ath_softc * sc)615 static int ath9k_of_init(struct ath_softc *sc)
616 {
617 struct device_node *np = sc->dev->of_node;
618 struct ath_hw *ah = sc->sc_ah;
619 struct ath_common *common = ath9k_hw_common(ah);
620 enum ath_bus_type bus_type = common->bus_ops->ath_bus_type;
621 const char *mac;
622 char eeprom_name[100];
623 int ret;
624
625 if (!of_device_is_available(np))
626 return 0;
627
628 ath_dbg(common, CONFIG, "parsing configuration from OF node\n");
629
630 if (of_property_read_bool(np, "qca,no-eeprom")) {
631 /* ath9k-eeprom-<bus>-<id>.bin */
632 scnprintf(eeprom_name, sizeof(eeprom_name),
633 "ath9k-eeprom-%s-%s.bin",
634 ath_bus_type_to_string(bus_type), dev_name(ah->dev));
635
636 ret = ath9k_eeprom_request(sc, eeprom_name);
637 if (ret)
638 return ret;
639
640 ah->ah_flags &= ~AH_USE_EEPROM;
641 ah->ah_flags |= AH_NO_EEP_SWAP;
642 }
643
644 mac = of_get_mac_address(np);
645 if (!IS_ERR(mac))
646 ether_addr_copy(common->macaddr, mac);
647
648 return 0;
649 }
650
ath9k_init_softc(u16 devid,struct ath_softc * sc,const struct ath_bus_ops * bus_ops)651 static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
652 const struct ath_bus_ops *bus_ops)
653 {
654 struct ath_hw *ah = NULL;
655 struct ath9k_hw_capabilities *pCap;
656 struct ath_common *common;
657 int ret = 0, i;
658 int csz = 0;
659
660 ah = devm_kzalloc(sc->dev, sizeof(struct ath_hw), GFP_KERNEL);
661 if (!ah)
662 return -ENOMEM;
663
664 ah->dev = sc->dev;
665 ah->hw = sc->hw;
666 ah->hw_version.devid = devid;
667 ah->ah_flags |= AH_USE_EEPROM;
668 ah->led_pin = -1;
669 ah->reg_ops.read = ath9k_ioread32;
670 ah->reg_ops.multi_read = ath9k_multi_ioread32;
671 ah->reg_ops.write = ath9k_iowrite32;
672 ah->reg_ops.rmw = ath9k_reg_rmw;
673 pCap = &ah->caps;
674
675 common = ath9k_hw_common(ah);
676
677 /* Will be cleared in ath9k_start() */
678 set_bit(ATH_OP_INVALID, &common->op_flags);
679
680 sc->sc_ah = ah;
681 sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET);
682 sc->tx99_power = MAX_RATE_POWER + 1;
683 init_waitqueue_head(&sc->tx_wait);
684 sc->cur_chan = &sc->chanctx[0];
685 if (!ath9k_is_chanctx_enabled())
686 sc->cur_chan->hw_queue_base = 0;
687
688 common->ops = &ah->reg_ops;
689 common->bus_ops = bus_ops;
690 common->ps_ops = &ath9k_ps_ops;
691 common->ah = ah;
692 common->hw = sc->hw;
693 common->priv = sc;
694 common->debug_mask = ath9k_debug;
695 common->btcoex_enabled = ath9k_btcoex_enable == 1;
696 common->disable_ani = false;
697
698 /*
699 * Platform quirks.
700 */
701 ath9k_init_pcoem_platform(sc);
702
703 ret = ath9k_init_platform(sc);
704 if (ret)
705 return ret;
706
707 ret = ath9k_of_init(sc);
708 if (ret)
709 return ret;
710
711 if (ath9k_led_active_high != -1)
712 ah->config.led_active_high = ath9k_led_active_high == 1;
713
714 /*
715 * Enable WLAN/BT RX Antenna diversity only when:
716 *
717 * - BTCOEX is disabled.
718 * - the user manually requests the feature.
719 * - the HW cap is set using the platform data.
720 */
721 if (!common->btcoex_enabled && ath9k_bt_ant_diversity &&
722 (pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV))
723 common->bt_ant_diversity = 1;
724
725 spin_lock_init(&common->cc_lock);
726 spin_lock_init(&sc->intr_lock);
727 spin_lock_init(&sc->sc_serial_rw);
728 spin_lock_init(&sc->sc_pm_lock);
729 spin_lock_init(&sc->chan_lock);
730 mutex_init(&sc->mutex);
731 tasklet_setup(&sc->intr_tq, ath9k_tasklet);
732 tasklet_setup(&sc->bcon_tasklet, ath9k_beacon_tasklet);
733
734 timer_setup(&sc->sleep_timer, ath_ps_full_sleep, 0);
735 INIT_WORK(&sc->hw_reset_work, ath_reset_work);
736 INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
737 INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
738 INIT_DELAYED_WORK(&sc->hw_check_work, ath_hw_check_work);
739
740 ath9k_init_channel_context(sc);
741
742 /*
743 * Cache line size is used to size and align various
744 * structures used to communicate with the hardware.
745 */
746 ath_read_cachesize(common, &csz);
747 common->cachelsz = csz << 2; /* convert to bytes */
748
749 /* Initializes the hardware for all supported chipsets */
750 ret = ath9k_hw_init(ah);
751 if (ret)
752 goto err_hw;
753
754 ret = ath9k_init_queues(sc);
755 if (ret)
756 goto err_queues;
757
758 ret = ath9k_init_btcoex(sc);
759 if (ret)
760 goto err_btcoex;
761
762 ret = ath9k_cmn_init_channels_rates(common);
763 if (ret)
764 goto err_btcoex;
765
766 ret = ath9k_init_p2p(sc);
767 if (ret)
768 goto err_btcoex;
769
770 ath9k_cmn_init_crypto(sc->sc_ah);
771 ath9k_init_misc(sc);
772 ath_chanctx_init(sc);
773 ath9k_offchannel_init(sc);
774
775 if (common->bus_ops->aspm_init)
776 common->bus_ops->aspm_init(common);
777
778 return 0;
779
780 err_btcoex:
781 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
782 if (ATH_TXQ_SETUP(sc, i))
783 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
784 err_queues:
785 ath9k_hw_deinit(ah);
786 err_hw:
787 ath9k_eeprom_release(sc);
788 dev_kfree_skb_any(sc->tx99_skb);
789 return ret;
790 }
791
ath9k_init_band_txpower(struct ath_softc * sc,int band)792 static void ath9k_init_band_txpower(struct ath_softc *sc, int band)
793 {
794 struct ieee80211_supported_band *sband;
795 struct ieee80211_channel *chan;
796 struct ath_hw *ah = sc->sc_ah;
797 struct ath_common *common = ath9k_hw_common(ah);
798 struct cfg80211_chan_def chandef;
799 int i;
800
801 sband = &common->sbands[band];
802 for (i = 0; i < sband->n_channels; i++) {
803 chan = &sband->channels[i];
804 ah->curchan = &ah->channels[chan->hw_value];
805 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_HT20);
806 ath9k_cmn_get_channel(sc->hw, ah, &chandef);
807 ath9k_hw_set_txpowerlimit(ah, MAX_COMBINED_POWER, true);
808 }
809 }
810
ath9k_init_txpower_limits(struct ath_softc * sc)811 static void ath9k_init_txpower_limits(struct ath_softc *sc)
812 {
813 struct ath_hw *ah = sc->sc_ah;
814 struct ath9k_channel *curchan = ah->curchan;
815
816 if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
817 ath9k_init_band_txpower(sc, NL80211_BAND_2GHZ);
818 if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
819 ath9k_init_band_txpower(sc, NL80211_BAND_5GHZ);
820
821 ah->curchan = curchan;
822 }
823
824 static const struct ieee80211_iface_limit if_limits[] = {
825 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) },
826 { .max = 8, .types =
827 #ifdef CONFIG_MAC80211_MESH
828 BIT(NL80211_IFTYPE_MESH_POINT) |
829 #endif
830 BIT(NL80211_IFTYPE_AP) },
831 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
832 BIT(NL80211_IFTYPE_P2P_GO) },
833 };
834
835 #ifdef CONFIG_WIRELESS_WDS
836 static const struct ieee80211_iface_limit wds_limits[] = {
837 { .max = 2048, .types = BIT(NL80211_IFTYPE_WDS) },
838 };
839 #endif
840
841 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
842
843 static const struct ieee80211_iface_limit if_limits_multi[] = {
844 { .max = 2, .types = BIT(NL80211_IFTYPE_STATION) |
845 BIT(NL80211_IFTYPE_AP) |
846 BIT(NL80211_IFTYPE_P2P_CLIENT) |
847 BIT(NL80211_IFTYPE_P2P_GO) },
848 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
849 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
850 };
851
852 static const struct ieee80211_iface_combination if_comb_multi[] = {
853 {
854 .limits = if_limits_multi,
855 .n_limits = ARRAY_SIZE(if_limits_multi),
856 .max_interfaces = 3,
857 .num_different_channels = 2,
858 .beacon_int_infra_match = true,
859 },
860 };
861
862 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
863
864 static const struct ieee80211_iface_combination if_comb[] = {
865 {
866 .limits = if_limits,
867 .n_limits = ARRAY_SIZE(if_limits),
868 .max_interfaces = 2048,
869 .num_different_channels = 1,
870 .beacon_int_infra_match = true,
871 #ifdef CONFIG_ATH9K_DFS_CERTIFIED
872 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
873 BIT(NL80211_CHAN_WIDTH_20) |
874 BIT(NL80211_CHAN_WIDTH_40),
875 #endif
876 },
877 #ifdef CONFIG_WIRELESS_WDS
878 {
879 .limits = wds_limits,
880 .n_limits = ARRAY_SIZE(wds_limits),
881 .max_interfaces = 2048,
882 .num_different_channels = 1,
883 .beacon_int_infra_match = true,
884 },
885 #endif
886 };
887
888 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
ath9k_set_mcc_capab(struct ath_softc * sc,struct ieee80211_hw * hw)889 static void ath9k_set_mcc_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
890 {
891 struct ath_hw *ah = sc->sc_ah;
892 struct ath_common *common = ath9k_hw_common(ah);
893
894 if (!ath9k_is_chanctx_enabled())
895 return;
896
897 ieee80211_hw_set(hw, QUEUE_CONTROL);
898 hw->queues = ATH9K_NUM_TX_QUEUES;
899 hw->offchannel_tx_hw_queue = hw->queues - 1;
900 hw->wiphy->interface_modes &= ~ BIT(NL80211_IFTYPE_WDS);
901 hw->wiphy->iface_combinations = if_comb_multi;
902 hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_multi);
903 hw->wiphy->max_scan_ssids = 255;
904 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
905 hw->wiphy->max_remain_on_channel_duration = 10000;
906 hw->chanctx_data_size = sizeof(void *);
907 hw->extra_beacon_tailroom =
908 sizeof(struct ieee80211_p2p_noa_attr) + 9;
909
910 ath_dbg(common, CHAN_CTX, "Use channel contexts\n");
911 }
912 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
913
ath9k_set_hw_capab(struct ath_softc * sc,struct ieee80211_hw * hw)914 static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
915 {
916 struct ath_hw *ah = sc->sc_ah;
917 struct ath_common *common = ath9k_hw_common(ah);
918
919 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
920 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
921 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
922 ieee80211_hw_set(hw, SPECTRUM_MGMT);
923 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
924 ieee80211_hw_set(hw, SIGNAL_DBM);
925 ieee80211_hw_set(hw, RX_INCLUDES_FCS);
926 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
927 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
928 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
929
930 if (ath9k_ps_enable)
931 ieee80211_hw_set(hw, SUPPORTS_PS);
932
933 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
934 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
935
936 if (AR_SREV_9280_20_OR_LATER(ah))
937 hw->radiotap_mcs_details |=
938 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
939 }
940
941 if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt)
942 ieee80211_hw_set(hw, MFP_CAPABLE);
943
944 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
945 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
946 NL80211_FEATURE_P2P_GO_CTWIN;
947
948 if (!IS_ENABLED(CONFIG_ATH9K_TX99)) {
949 hw->wiphy->interface_modes =
950 BIT(NL80211_IFTYPE_P2P_GO) |
951 BIT(NL80211_IFTYPE_P2P_CLIENT) |
952 BIT(NL80211_IFTYPE_AP) |
953 BIT(NL80211_IFTYPE_STATION) |
954 BIT(NL80211_IFTYPE_ADHOC) |
955 BIT(NL80211_IFTYPE_MESH_POINT) |
956 #ifdef CONFIG_WIRELESS_WDS
957 BIT(NL80211_IFTYPE_WDS) |
958 #endif
959 BIT(NL80211_IFTYPE_OCB);
960
961 if (ath9k_is_chanctx_enabled())
962 hw->wiphy->interface_modes |=
963 BIT(NL80211_IFTYPE_P2P_DEVICE);
964
965 hw->wiphy->iface_combinations = if_comb;
966 hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
967 }
968
969 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
970
971 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
972 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
973 hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
974 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_5_10_MHZ;
975 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
976 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
977
978 hw->queues = 4;
979 hw->max_rates = 4;
980 hw->max_listen_interval = 10;
981 hw->max_rate_tries = 10;
982 hw->sta_data_size = sizeof(struct ath_node);
983 hw->vif_data_size = sizeof(struct ath_vif);
984 hw->txq_data_size = sizeof(struct ath_atx_tid);
985 hw->extra_tx_headroom = 4;
986
987 hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1;
988 hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1;
989
990 /* single chain devices with rx diversity */
991 if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)
992 hw->wiphy->available_antennas_rx = BIT(0) | BIT(1);
993
994 sc->ant_rx = hw->wiphy->available_antennas_rx;
995 sc->ant_tx = hw->wiphy->available_antennas_tx;
996
997 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
998 hw->wiphy->bands[NL80211_BAND_2GHZ] =
999 &common->sbands[NL80211_BAND_2GHZ];
1000 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
1001 hw->wiphy->bands[NL80211_BAND_5GHZ] =
1002 &common->sbands[NL80211_BAND_5GHZ];
1003
1004 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
1005 ath9k_set_mcc_capab(sc, hw);
1006 #endif
1007 ath9k_init_wow(hw);
1008 ath9k_cmn_reload_chainmask(ah);
1009
1010 SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
1011
1012 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1013 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_AIRTIME_FAIRNESS);
1014 wiphy_ext_feature_set(hw->wiphy,
1015 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
1016 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
1017 }
1018
ath9k_init_device(u16 devid,struct ath_softc * sc,const struct ath_bus_ops * bus_ops)1019 int ath9k_init_device(u16 devid, struct ath_softc *sc,
1020 const struct ath_bus_ops *bus_ops)
1021 {
1022 struct ieee80211_hw *hw = sc->hw;
1023 struct ath_common *common;
1024 struct ath_hw *ah;
1025 int error = 0;
1026 struct ath_regulatory *reg;
1027
1028 /* Bring up device */
1029 error = ath9k_init_softc(devid, sc, bus_ops);
1030 if (error)
1031 return error;
1032
1033 ah = sc->sc_ah;
1034 common = ath9k_hw_common(ah);
1035 ath9k_set_hw_capab(sc, hw);
1036
1037 /* Initialize regulatory */
1038 error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
1039 ath9k_reg_notifier);
1040 if (error)
1041 goto deinit;
1042
1043 reg = &common->regulatory;
1044
1045 /* Setup TX DMA */
1046 error = ath_tx_init(sc, ATH_TXBUF);
1047 if (error != 0)
1048 goto deinit;
1049
1050 /* Setup RX DMA */
1051 error = ath_rx_init(sc, ATH_RXBUF);
1052 if (error != 0)
1053 goto deinit;
1054
1055 ath9k_init_txpower_limits(sc);
1056
1057 #ifdef CONFIG_MAC80211_LEDS
1058 /* must be initialized before ieee80211_register_hw */
1059 sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
1060 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
1061 ARRAY_SIZE(ath9k_tpt_blink));
1062 #endif
1063
1064 /* Register with mac80211 */
1065 error = ieee80211_register_hw(hw);
1066 if (error)
1067 goto rx_cleanup;
1068
1069 error = ath9k_init_debug(ah);
1070 if (error) {
1071 ath_err(common, "Unable to create debugfs files\n");
1072 goto unregister;
1073 }
1074
1075 /* Handle world regulatory */
1076 if (!ath_is_world_regd(reg)) {
1077 error = regulatory_hint(hw->wiphy, reg->alpha2);
1078 if (error)
1079 goto debug_cleanup;
1080 }
1081
1082 ath_init_leds(sc);
1083 ath_start_rfkill_poll(sc);
1084
1085 return 0;
1086
1087 debug_cleanup:
1088 ath9k_deinit_debug(sc);
1089 unregister:
1090 ieee80211_unregister_hw(hw);
1091 rx_cleanup:
1092 ath_rx_cleanup(sc);
1093 deinit:
1094 ath9k_deinit_softc(sc);
1095 return error;
1096 }
1097
1098 /*****************************/
1099 /* De-Initialization */
1100 /*****************************/
1101
ath9k_deinit_softc(struct ath_softc * sc)1102 static void ath9k_deinit_softc(struct ath_softc *sc)
1103 {
1104 int i = 0;
1105
1106 ath9k_deinit_p2p(sc);
1107 ath9k_deinit_btcoex(sc);
1108
1109 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1110 if (ATH_TXQ_SETUP(sc, i))
1111 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
1112
1113 del_timer_sync(&sc->sleep_timer);
1114 ath9k_hw_deinit(sc->sc_ah);
1115 if (sc->dfs_detector != NULL)
1116 sc->dfs_detector->exit(sc->dfs_detector);
1117
1118 ath9k_eeprom_release(sc);
1119 }
1120
ath9k_deinit_device(struct ath_softc * sc)1121 void ath9k_deinit_device(struct ath_softc *sc)
1122 {
1123 struct ieee80211_hw *hw = sc->hw;
1124
1125 ath9k_ps_wakeup(sc);
1126
1127 wiphy_rfkill_stop_polling(sc->hw->wiphy);
1128 ath_deinit_leds(sc);
1129
1130 ath9k_ps_restore(sc);
1131
1132 ath9k_deinit_debug(sc);
1133 ath9k_deinit_wow(hw);
1134 ieee80211_unregister_hw(hw);
1135 ath_rx_cleanup(sc);
1136 ath9k_deinit_softc(sc);
1137 }
1138
1139 /************************/
1140 /* Module Hooks */
1141 /************************/
1142
ath9k_init(void)1143 static int __init ath9k_init(void)
1144 {
1145 int error;
1146
1147 error = ath_pci_init();
1148 if (error < 0) {
1149 pr_err("No PCI devices found, driver not installed\n");
1150 error = -ENODEV;
1151 goto err_out;
1152 }
1153
1154 error = ath_ahb_init();
1155 if (error < 0) {
1156 error = -ENODEV;
1157 goto err_pci_exit;
1158 }
1159
1160 dmi_check_system(ath9k_quirks);
1161
1162 return 0;
1163
1164 err_pci_exit:
1165 ath_pci_exit();
1166 err_out:
1167 return error;
1168 }
1169 module_init(ath9k_init);
1170
ath9k_exit(void)1171 static void __exit ath9k_exit(void)
1172 {
1173 is_ath9k_unloaded = true;
1174 ath_ahb_exit();
1175 ath_pci_exit();
1176 pr_info("%s: Driver unloaded\n", dev_info);
1177 }
1178 module_exit(ath9k_exit);
1179
