1 /*
2 * Copyright (c) 2010-2011 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 "htc.h"
20
21 MODULE_AUTHOR("Atheros Communications");
22 MODULE_LICENSE("Dual BSD/GPL");
23 MODULE_DESCRIPTION("Atheros driver 802.11n HTC based wireless devices");
24
25 static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
26 module_param_named(debug, ath9k_debug, uint, 0);
27 MODULE_PARM_DESC(debug, "Debugging mask");
28
29 int htc_modparam_nohwcrypt;
30 module_param_named(nohwcrypt, htc_modparam_nohwcrypt, int, 0444);
31 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
32
33 static int ath9k_htc_btcoex_enable;
34 module_param_named(btcoex_enable, ath9k_htc_btcoex_enable, int, 0444);
35 MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");
36
37 static int ath9k_ps_enable;
38 module_param_named(ps_enable, ath9k_ps_enable, int, 0444);
39 MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave");
40
41 int htc_use_dev_fw = 0;
42 module_param_named(use_dev_fw, htc_use_dev_fw, int, 0444);
43 MODULE_PARM_DESC(use_dev_fw, "Use development FW version");
44
45 #ifdef CONFIG_MAC80211_LEDS
46 int ath9k_htc_led_blink = 1;
47 module_param_named(blink, ath9k_htc_led_blink, int, 0444);
48 MODULE_PARM_DESC(blink, "Enable LED blink on activity");
49
50 static const struct ieee80211_tpt_blink ath9k_htc_tpt_blink[] = {
51 { .throughput = 0 * 1024, .blink_time = 334 },
52 { .throughput = 1 * 1024, .blink_time = 260 },
53 { .throughput = 5 * 1024, .blink_time = 220 },
54 { .throughput = 10 * 1024, .blink_time = 190 },
55 { .throughput = 20 * 1024, .blink_time = 170 },
56 { .throughput = 50 * 1024, .blink_time = 150 },
57 { .throughput = 70 * 1024, .blink_time = 130 },
58 { .throughput = 100 * 1024, .blink_time = 110 },
59 { .throughput = 200 * 1024, .blink_time = 80 },
60 { .throughput = 300 * 1024, .blink_time = 50 },
61 };
62 #endif
63
ath9k_htc_op_ps_wakeup(struct ath_common * common)64 static void ath9k_htc_op_ps_wakeup(struct ath_common *common)
65 {
66 ath9k_htc_ps_wakeup((struct ath9k_htc_priv *) common->priv);
67 }
68
ath9k_htc_op_ps_restore(struct ath_common * common)69 static void ath9k_htc_op_ps_restore(struct ath_common *common)
70 {
71 ath9k_htc_ps_restore((struct ath9k_htc_priv *) common->priv);
72 }
73
74 static const struct ath_ps_ops ath9k_htc_ps_ops = {
75 .wakeup = ath9k_htc_op_ps_wakeup,
76 .restore = ath9k_htc_op_ps_restore,
77 };
78
ath9k_htc_wait_for_target(struct ath9k_htc_priv * priv)79 static int ath9k_htc_wait_for_target(struct ath9k_htc_priv *priv)
80 {
81 unsigned long time_left;
82
83 if (atomic_read(&priv->htc->tgt_ready) > 0) {
84 atomic_dec(&priv->htc->tgt_ready);
85 return 0;
86 }
87
88 /* Firmware can take up to 50ms to get ready, to be safe use 1 second */
89 time_left = wait_for_completion_timeout(&priv->htc->target_wait, HZ);
90 if (!time_left) {
91 dev_err(priv->dev, "ath9k_htc: Target is unresponsive\n");
92 return -ETIMEDOUT;
93 }
94
95 atomic_dec(&priv->htc->tgt_ready);
96
97 return 0;
98 }
99
ath9k_deinit_priv(struct ath9k_htc_priv * priv)100 static void ath9k_deinit_priv(struct ath9k_htc_priv *priv)
101 {
102 ath9k_hw_deinit(priv->ah);
103 kfree(priv->ah);
104 priv->ah = NULL;
105 }
106
ath9k_deinit_device(struct ath9k_htc_priv * priv)107 static void ath9k_deinit_device(struct ath9k_htc_priv *priv)
108 {
109 struct ieee80211_hw *hw = priv->hw;
110
111 wiphy_rfkill_stop_polling(hw->wiphy);
112 ath9k_deinit_leds(priv);
113 ath9k_htc_deinit_debug(priv);
114 ieee80211_unregister_hw(hw);
115 ath9k_rx_cleanup(priv);
116 ath9k_tx_cleanup(priv);
117 ath9k_deinit_priv(priv);
118 }
119
ath9k_htc_connect_svc(struct ath9k_htc_priv * priv,u16 service_id,void (* tx)(void *,struct sk_buff *,enum htc_endpoint_id,bool txok),enum htc_endpoint_id * ep_id)120 static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv,
121 u16 service_id,
122 void (*tx) (void *,
123 struct sk_buff *,
124 enum htc_endpoint_id,
125 bool txok),
126 enum htc_endpoint_id *ep_id)
127 {
128 struct htc_service_connreq req;
129
130 memset(&req, 0, sizeof(struct htc_service_connreq));
131
132 req.service_id = service_id;
133 req.ep_callbacks.priv = priv;
134 req.ep_callbacks.rx = ath9k_htc_rxep;
135 req.ep_callbacks.tx = tx;
136
137 return htc_connect_service(priv->htc, &req, ep_id);
138 }
139
ath9k_init_htc_services(struct ath9k_htc_priv * priv,u16 devid,u32 drv_info)140 static int ath9k_init_htc_services(struct ath9k_htc_priv *priv, u16 devid,
141 u32 drv_info)
142 {
143 int ret;
144
145 /* WMI CMD*/
146 ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep);
147 if (ret)
148 goto err;
149
150 /* Beacon */
151 ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep,
152 &priv->beacon_ep);
153 if (ret)
154 goto err;
155
156 /* CAB */
157 ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep,
158 &priv->cab_ep);
159 if (ret)
160 goto err;
161
162
163 /* UAPSD */
164 ret = ath9k_htc_connect_svc(priv, WMI_UAPSD_SVC, ath9k_htc_txep,
165 &priv->uapsd_ep);
166 if (ret)
167 goto err;
168
169 /* MGMT */
170 ret = ath9k_htc_connect_svc(priv, WMI_MGMT_SVC, ath9k_htc_txep,
171 &priv->mgmt_ep);
172 if (ret)
173 goto err;
174
175 /* DATA BE */
176 ret = ath9k_htc_connect_svc(priv, WMI_DATA_BE_SVC, ath9k_htc_txep,
177 &priv->data_be_ep);
178 if (ret)
179 goto err;
180
181 /* DATA BK */
182 ret = ath9k_htc_connect_svc(priv, WMI_DATA_BK_SVC, ath9k_htc_txep,
183 &priv->data_bk_ep);
184 if (ret)
185 goto err;
186
187 /* DATA VI */
188 ret = ath9k_htc_connect_svc(priv, WMI_DATA_VI_SVC, ath9k_htc_txep,
189 &priv->data_vi_ep);
190 if (ret)
191 goto err;
192
193 /* DATA VO */
194 ret = ath9k_htc_connect_svc(priv, WMI_DATA_VO_SVC, ath9k_htc_txep,
195 &priv->data_vo_ep);
196 if (ret)
197 goto err;
198
199 /*
200 * Setup required credits before initializing HTC.
201 * This is a bit hacky, but, since queuing is done in
202 * the HIF layer, shouldn't matter much.
203 */
204
205 if (IS_AR7010_DEVICE(drv_info))
206 priv->htc->credits = 45;
207 else
208 priv->htc->credits = 33;
209
210 ret = htc_init(priv->htc);
211 if (ret)
212 goto err;
213
214 dev_info(priv->dev, "ath9k_htc: HTC initialized with %d credits\n",
215 priv->htc->credits);
216
217 return 0;
218
219 err:
220 dev_err(priv->dev, "ath9k_htc: Unable to initialize HTC services\n");
221 return ret;
222 }
223
ath9k_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)224 static void ath9k_reg_notifier(struct wiphy *wiphy,
225 struct regulatory_request *request)
226 {
227 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
228 struct ath9k_htc_priv *priv = hw->priv;
229
230 ath_reg_notifier_apply(wiphy, request,
231 ath9k_hw_regulatory(priv->ah));
232 }
233
ath9k_regread(void * hw_priv,u32 reg_offset)234 static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset)
235 {
236 struct ath_hw *ah = hw_priv;
237 struct ath_common *common = ath9k_hw_common(ah);
238 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
239 __be32 val, reg = cpu_to_be32(reg_offset);
240 int r;
241
242 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
243 (u8 *) ®, sizeof(reg),
244 (u8 *) &val, sizeof(val),
245 100);
246 if (unlikely(r)) {
247 ath_dbg(common, WMI, "REGISTER READ FAILED: (0x%04x, %d)\n",
248 reg_offset, r);
249 return -1;
250 }
251
252 return be32_to_cpu(val);
253 }
254
ath9k_multi_regread(void * hw_priv,u32 * addr,u32 * val,u16 count)255 static void ath9k_multi_regread(void *hw_priv, u32 *addr,
256 u32 *val, u16 count)
257 {
258 struct ath_hw *ah = hw_priv;
259 struct ath_common *common = ath9k_hw_common(ah);
260 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
261 __be32 tmpaddr[8];
262 __be32 tmpval[8];
263 int i, ret;
264
265 for (i = 0; i < count; i++) {
266 tmpaddr[i] = cpu_to_be32(addr[i]);
267 }
268
269 ret = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
270 (u8 *)tmpaddr , sizeof(u32) * count,
271 (u8 *)tmpval, sizeof(u32) * count,
272 100);
273 if (unlikely(ret)) {
274 ath_dbg(common, WMI,
275 "Multiple REGISTER READ FAILED (count: %d)\n", count);
276 }
277
278 for (i = 0; i < count; i++) {
279 val[i] = be32_to_cpu(tmpval[i]);
280 }
281 }
282
ath9k_regwrite_multi(struct ath_common * common)283 static void ath9k_regwrite_multi(struct ath_common *common)
284 {
285 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
286 u32 rsp_status;
287 int r;
288
289 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
290 (u8 *) &priv->wmi->multi_write,
291 sizeof(struct register_write) * priv->wmi->multi_write_idx,
292 (u8 *) &rsp_status, sizeof(rsp_status),
293 100);
294 if (unlikely(r)) {
295 ath_dbg(common, WMI,
296 "REGISTER WRITE FAILED, multi len: %d\n",
297 priv->wmi->multi_write_idx);
298 }
299 priv->wmi->multi_write_idx = 0;
300 }
301
ath9k_regwrite_single(void * hw_priv,u32 val,u32 reg_offset)302 static void ath9k_regwrite_single(void *hw_priv, u32 val, u32 reg_offset)
303 {
304 struct ath_hw *ah = hw_priv;
305 struct ath_common *common = ath9k_hw_common(ah);
306 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
307 const __be32 buf[2] = {
308 cpu_to_be32(reg_offset),
309 cpu_to_be32(val),
310 };
311 int r;
312
313 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
314 (u8 *) &buf, sizeof(buf),
315 (u8 *) &val, sizeof(val),
316 100);
317 if (unlikely(r)) {
318 ath_dbg(common, WMI, "REGISTER WRITE FAILED:(0x%04x, %d)\n",
319 reg_offset, r);
320 }
321 }
322
ath9k_regwrite_buffer(void * hw_priv,u32 val,u32 reg_offset)323 static void ath9k_regwrite_buffer(void *hw_priv, u32 val, u32 reg_offset)
324 {
325 struct ath_hw *ah = hw_priv;
326 struct ath_common *common = ath9k_hw_common(ah);
327 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
328
329 mutex_lock(&priv->wmi->multi_write_mutex);
330
331 /* Store the register/value */
332 priv->wmi->multi_write[priv->wmi->multi_write_idx].reg =
333 cpu_to_be32(reg_offset);
334 priv->wmi->multi_write[priv->wmi->multi_write_idx].val =
335 cpu_to_be32(val);
336
337 priv->wmi->multi_write_idx++;
338
339 /* If the buffer is full, send it out. */
340 if (priv->wmi->multi_write_idx == MAX_CMD_NUMBER)
341 ath9k_regwrite_multi(common);
342
343 mutex_unlock(&priv->wmi->multi_write_mutex);
344 }
345
ath9k_regwrite(void * hw_priv,u32 val,u32 reg_offset)346 static void ath9k_regwrite(void *hw_priv, u32 val, u32 reg_offset)
347 {
348 struct ath_hw *ah = hw_priv;
349 struct ath_common *common = ath9k_hw_common(ah);
350 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
351
352 if (atomic_read(&priv->wmi->mwrite_cnt))
353 ath9k_regwrite_buffer(hw_priv, val, reg_offset);
354 else
355 ath9k_regwrite_single(hw_priv, val, reg_offset);
356 }
357
ath9k_enable_regwrite_buffer(void * hw_priv)358 static void ath9k_enable_regwrite_buffer(void *hw_priv)
359 {
360 struct ath_hw *ah = hw_priv;
361 struct ath_common *common = ath9k_hw_common(ah);
362 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
363
364 atomic_inc(&priv->wmi->mwrite_cnt);
365 }
366
ath9k_regwrite_flush(void * hw_priv)367 static void ath9k_regwrite_flush(void *hw_priv)
368 {
369 struct ath_hw *ah = hw_priv;
370 struct ath_common *common = ath9k_hw_common(ah);
371 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
372
373 atomic_dec(&priv->wmi->mwrite_cnt);
374
375 mutex_lock(&priv->wmi->multi_write_mutex);
376
377 if (priv->wmi->multi_write_idx)
378 ath9k_regwrite_multi(common);
379
380 mutex_unlock(&priv->wmi->multi_write_mutex);
381 }
382
ath9k_reg_rmw_buffer(void * hw_priv,u32 reg_offset,u32 set,u32 clr)383 static void ath9k_reg_rmw_buffer(void *hw_priv,
384 u32 reg_offset, u32 set, u32 clr)
385 {
386 struct ath_hw *ah = hw_priv;
387 struct ath_common *common = ath9k_hw_common(ah);
388 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
389 u32 rsp_status;
390 int r;
391
392 mutex_lock(&priv->wmi->multi_rmw_mutex);
393
394 /* Store the register/value */
395 priv->wmi->multi_rmw[priv->wmi->multi_rmw_idx].reg =
396 cpu_to_be32(reg_offset);
397 priv->wmi->multi_rmw[priv->wmi->multi_rmw_idx].set =
398 cpu_to_be32(set);
399 priv->wmi->multi_rmw[priv->wmi->multi_rmw_idx].clr =
400 cpu_to_be32(clr);
401
402 priv->wmi->multi_rmw_idx++;
403
404 /* If the buffer is full, send it out. */
405 if (priv->wmi->multi_rmw_idx == MAX_RMW_CMD_NUMBER) {
406 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_RMW_CMDID,
407 (u8 *) &priv->wmi->multi_rmw,
408 sizeof(struct register_write) * priv->wmi->multi_rmw_idx,
409 (u8 *) &rsp_status, sizeof(rsp_status),
410 100);
411 if (unlikely(r)) {
412 ath_dbg(common, WMI,
413 "REGISTER RMW FAILED, multi len: %d\n",
414 priv->wmi->multi_rmw_idx);
415 }
416 priv->wmi->multi_rmw_idx = 0;
417 }
418
419 mutex_unlock(&priv->wmi->multi_rmw_mutex);
420 }
421
ath9k_reg_rmw_flush(void * hw_priv)422 static void ath9k_reg_rmw_flush(void *hw_priv)
423 {
424 struct ath_hw *ah = hw_priv;
425 struct ath_common *common = ath9k_hw_common(ah);
426 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
427 u32 rsp_status;
428 int r;
429
430 if (test_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags))
431 return;
432
433 atomic_dec(&priv->wmi->m_rmw_cnt);
434
435 mutex_lock(&priv->wmi->multi_rmw_mutex);
436
437 if (priv->wmi->multi_rmw_idx) {
438 r = ath9k_wmi_cmd(priv->wmi, WMI_REG_RMW_CMDID,
439 (u8 *) &priv->wmi->multi_rmw,
440 sizeof(struct register_rmw) * priv->wmi->multi_rmw_idx,
441 (u8 *) &rsp_status, sizeof(rsp_status),
442 100);
443 if (unlikely(r)) {
444 ath_dbg(common, WMI,
445 "REGISTER RMW FAILED, multi len: %d\n",
446 priv->wmi->multi_rmw_idx);
447 }
448 priv->wmi->multi_rmw_idx = 0;
449 }
450
451 mutex_unlock(&priv->wmi->multi_rmw_mutex);
452 }
453
ath9k_enable_rmw_buffer(void * hw_priv)454 static void ath9k_enable_rmw_buffer(void *hw_priv)
455 {
456 struct ath_hw *ah = hw_priv;
457 struct ath_common *common = ath9k_hw_common(ah);
458 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
459
460 if (test_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags))
461 return;
462
463 atomic_inc(&priv->wmi->m_rmw_cnt);
464 }
465
ath9k_reg_rmw_single(void * hw_priv,u32 reg_offset,u32 set,u32 clr)466 static void ath9k_reg_rmw_single(void *hw_priv,
467 u32 reg_offset, u32 set, u32 clr)
468 {
469 struct ath_hw *ah = hw_priv;
470 struct ath_common *common = ath9k_hw_common(ah);
471 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
472 struct register_rmw buf, buf_ret;
473 int ret;
474
475 buf.reg = cpu_to_be32(reg_offset);
476 buf.set = cpu_to_be32(set);
477 buf.clr = cpu_to_be32(clr);
478
479 ret = ath9k_wmi_cmd(priv->wmi, WMI_REG_RMW_CMDID,
480 (u8 *) &buf, sizeof(buf),
481 (u8 *) &buf_ret, sizeof(buf_ret),
482 100);
483 if (unlikely(ret)) {
484 ath_dbg(common, WMI, "REGISTER RMW FAILED:(0x%04x, %d)\n",
485 reg_offset, ret);
486 }
487 }
488
ath9k_reg_rmw(void * hw_priv,u32 reg_offset,u32 set,u32 clr)489 static u32 ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
490 {
491 struct ath_hw *ah = hw_priv;
492 struct ath_common *common = ath9k_hw_common(ah);
493 struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
494
495 if (test_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags)) {
496 u32 val;
497
498 val = REG_READ(ah, reg_offset);
499 val &= ~clr;
500 val |= set;
501 REG_WRITE(ah, reg_offset, val);
502
503 return 0;
504 }
505
506 if (atomic_read(&priv->wmi->m_rmw_cnt))
507 ath9k_reg_rmw_buffer(hw_priv, reg_offset, set, clr);
508 else
509 ath9k_reg_rmw_single(hw_priv, reg_offset, set, clr);
510
511 return 0;
512 }
513
ath_usb_read_cachesize(struct ath_common * common,int * csz)514 static void ath_usb_read_cachesize(struct ath_common *common, int *csz)
515 {
516 *csz = L1_CACHE_BYTES >> 2;
517 }
518
ath_usb_eeprom_read(struct ath_common * common,u32 off,u16 * data)519 static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
520 {
521 struct ath_hw *ah = (struct ath_hw *) common->ah;
522
523 (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
524
525 if (!ath9k_hw_wait(ah,
526 AR_EEPROM_STATUS_DATA,
527 AR_EEPROM_STATUS_DATA_BUSY |
528 AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
529 AH_WAIT_TIMEOUT))
530 return false;
531
532 *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
533 AR_EEPROM_STATUS_DATA_VAL);
534
535 return true;
536 }
537
538 static const struct ath_bus_ops ath9k_usb_bus_ops = {
539 .ath_bus_type = ATH_USB,
540 .read_cachesize = ath_usb_read_cachesize,
541 .eeprom_read = ath_usb_eeprom_read,
542 };
543
ath9k_init_queues(struct ath9k_htc_priv * priv)544 static int ath9k_init_queues(struct ath9k_htc_priv *priv)
545 {
546 struct ath_common *common = ath9k_hw_common(priv->ah);
547 int i;
548
549 for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++)
550 priv->hwq_map[i] = -1;
551
552 priv->beacon.beaconq = ath9k_hw_beaconq_setup(priv->ah);
553 if (priv->beacon.beaconq == -1) {
554 ath_err(common, "Unable to setup BEACON xmit queue\n");
555 goto err;
556 }
557
558 priv->cabq = ath9k_htc_cabq_setup(priv);
559 if (priv->cabq == -1) {
560 ath_err(common, "Unable to setup CAB xmit queue\n");
561 goto err;
562 }
563
564 if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_BE)) {
565 ath_err(common, "Unable to setup xmit queue for BE traffic\n");
566 goto err;
567 }
568
569 if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_BK)) {
570 ath_err(common, "Unable to setup xmit queue for BK traffic\n");
571 goto err;
572 }
573 if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_VI)) {
574 ath_err(common, "Unable to setup xmit queue for VI traffic\n");
575 goto err;
576 }
577 if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_VO)) {
578 ath_err(common, "Unable to setup xmit queue for VO traffic\n");
579 goto err;
580 }
581
582 return 0;
583
584 err:
585 return -EINVAL;
586 }
587
ath9k_init_misc(struct ath9k_htc_priv * priv)588 static void ath9k_init_misc(struct ath9k_htc_priv *priv)
589 {
590 struct ath_common *common = ath9k_hw_common(priv->ah);
591
592 eth_broadcast_addr(common->bssidmask);
593
594 common->last_rssi = ATH_RSSI_DUMMY_MARKER;
595 priv->ah->opmode = NL80211_IFTYPE_STATION;
596
597 priv->spec_priv.ah = priv->ah;
598 priv->spec_priv.spec_config.enabled = 0;
599 priv->spec_priv.spec_config.short_repeat = true;
600 priv->spec_priv.spec_config.count = 8;
601 priv->spec_priv.spec_config.endless = false;
602 priv->spec_priv.spec_config.period = 0x12;
603 priv->spec_priv.spec_config.fft_period = 0x02;
604 }
605
ath9k_init_priv(struct ath9k_htc_priv * priv,u16 devid,char * product,u32 drv_info)606 static int ath9k_init_priv(struct ath9k_htc_priv *priv,
607 u16 devid, char *product,
608 u32 drv_info)
609 {
610 struct ath_hw *ah = NULL;
611 struct ath_common *common;
612 int i, ret = 0, csz = 0;
613
614 ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
615 if (!ah)
616 return -ENOMEM;
617
618 ah->dev = priv->dev;
619 ah->hw = priv->hw;
620 ah->hw_version.devid = devid;
621 ah->hw_version.usbdev = drv_info;
622 ah->ah_flags |= AH_USE_EEPROM;
623 ah->reg_ops.read = ath9k_regread;
624 ah->reg_ops.multi_read = ath9k_multi_regread;
625 ah->reg_ops.write = ath9k_regwrite;
626 ah->reg_ops.enable_write_buffer = ath9k_enable_regwrite_buffer;
627 ah->reg_ops.write_flush = ath9k_regwrite_flush;
628 ah->reg_ops.enable_rmw_buffer = ath9k_enable_rmw_buffer;
629 ah->reg_ops.rmw_flush = ath9k_reg_rmw_flush;
630 ah->reg_ops.rmw = ath9k_reg_rmw;
631 priv->ah = ah;
632
633 common = ath9k_hw_common(ah);
634 common->ops = &ah->reg_ops;
635 common->ps_ops = &ath9k_htc_ps_ops;
636 common->bus_ops = &ath9k_usb_bus_ops;
637 common->ah = ah;
638 common->hw = priv->hw;
639 common->priv = priv;
640 common->debug_mask = ath9k_debug;
641 common->btcoex_enabled = ath9k_htc_btcoex_enable == 1;
642 set_bit(ATH_OP_INVALID, &common->op_flags);
643
644 spin_lock_init(&priv->beacon_lock);
645 spin_lock_init(&priv->tx.tx_lock);
646 mutex_init(&priv->mutex);
647 mutex_init(&priv->htc_pm_lock);
648 tasklet_setup(&priv->rx_tasklet, ath9k_rx_tasklet);
649 tasklet_setup(&priv->tx_failed_tasklet, ath9k_tx_failed_tasklet);
650 INIT_DELAYED_WORK(&priv->ani_work, ath9k_htc_ani_work);
651 INIT_WORK(&priv->ps_work, ath9k_ps_work);
652 INIT_WORK(&priv->fatal_work, ath9k_fatal_work);
653 timer_setup(&priv->tx.cleanup_timer, ath9k_htc_tx_cleanup_timer, 0);
654
655 /*
656 * Cache line size is used to size and align various
657 * structures used to communicate with the hardware.
658 */
659 ath_read_cachesize(common, &csz);
660 common->cachelsz = csz << 2; /* convert to bytes */
661
662 ret = ath9k_hw_init(ah);
663 if (ret) {
664 ath_err(common,
665 "Unable to initialize hardware; initialization status: %d\n",
666 ret);
667 goto err_hw;
668 }
669
670 ret = ath9k_init_queues(priv);
671 if (ret)
672 goto err_queues;
673
674 for (i = 0; i < ATH9K_HTC_MAX_BCN_VIF; i++)
675 priv->beacon.bslot[i] = NULL;
676 priv->beacon.slottime = 9;
677
678 ath9k_cmn_init_channels_rates(common);
679 ath9k_cmn_init_crypto(ah);
680 ath9k_init_misc(priv);
681 ath9k_htc_init_btcoex(priv, product);
682
683 return 0;
684
685 err_queues:
686 ath9k_hw_deinit(ah);
687 err_hw:
688
689 kfree(ah);
690 priv->ah = NULL;
691
692 return ret;
693 }
694
695 static const struct ieee80211_iface_limit if_limits[] = {
696 { .max = 2, .types = BIT(NL80211_IFTYPE_STATION) |
697 BIT(NL80211_IFTYPE_P2P_CLIENT) },
698 { .max = 2, .types = BIT(NL80211_IFTYPE_AP) |
699 #ifdef CONFIG_MAC80211_MESH
700 BIT(NL80211_IFTYPE_MESH_POINT) |
701 #endif
702 BIT(NL80211_IFTYPE_P2P_GO) },
703 };
704
705 static const struct ieee80211_iface_combination if_comb = {
706 .limits = if_limits,
707 .n_limits = ARRAY_SIZE(if_limits),
708 .max_interfaces = 2,
709 .num_different_channels = 1,
710 };
711
ath9k_set_hw_capab(struct ath9k_htc_priv * priv,struct ieee80211_hw * hw)712 static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
713 struct ieee80211_hw *hw)
714 {
715 struct ath_hw *ah = priv->ah;
716 struct ath_common *common = ath9k_hw_common(priv->ah);
717 struct base_eep_header *pBase;
718
719 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
720 ieee80211_hw_set(hw, MFP_CAPABLE);
721 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
722 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
723 ieee80211_hw_set(hw, RX_INCLUDES_FCS);
724 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
725 ieee80211_hw_set(hw, SPECTRUM_MGMT);
726 ieee80211_hw_set(hw, SIGNAL_DBM);
727 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
728 ieee80211_hw_set(hw, DOESNT_SUPPORT_QOS_NDP);
729
730 if (ath9k_ps_enable)
731 ieee80211_hw_set(hw, SUPPORTS_PS);
732
733 hw->wiphy->interface_modes =
734 BIT(NL80211_IFTYPE_STATION) |
735 BIT(NL80211_IFTYPE_ADHOC) |
736 BIT(NL80211_IFTYPE_AP) |
737 BIT(NL80211_IFTYPE_P2P_GO) |
738 BIT(NL80211_IFTYPE_P2P_CLIENT) |
739 BIT(NL80211_IFTYPE_MESH_POINT) |
740 BIT(NL80211_IFTYPE_OCB);
741
742 hw->wiphy->iface_combinations = &if_comb;
743 hw->wiphy->n_iface_combinations = 1;
744
745 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
746
747 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN |
748 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
749 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
750
751 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
752
753 hw->queues = 4;
754 hw->max_listen_interval = 1;
755
756 hw->vif_data_size = sizeof(struct ath9k_htc_vif);
757 hw->sta_data_size = sizeof(struct ath9k_htc_sta);
758
759 /* tx_frame_hdr is larger than tx_mgmt_hdr anyway */
760 hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) +
761 sizeof(struct htc_frame_hdr) + 4;
762
763 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
764 hw->wiphy->bands[NL80211_BAND_2GHZ] =
765 &common->sbands[NL80211_BAND_2GHZ];
766 if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
767 hw->wiphy->bands[NL80211_BAND_5GHZ] =
768 &common->sbands[NL80211_BAND_5GHZ];
769
770 ath9k_cmn_reload_chainmask(ah);
771
772 pBase = ath9k_htc_get_eeprom_base(priv);
773 if (pBase) {
774 hw->wiphy->available_antennas_rx = pBase->rxMask;
775 hw->wiphy->available_antennas_tx = pBase->txMask;
776 }
777
778 SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
779
780 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
781 wiphy_ext_feature_set(hw->wiphy,
782 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
783 }
784
ath9k_init_firmware_version(struct ath9k_htc_priv * priv)785 static int ath9k_init_firmware_version(struct ath9k_htc_priv *priv)
786 {
787 struct ieee80211_hw *hw = priv->hw;
788 struct wmi_fw_version cmd_rsp;
789 int ret;
790
791 memset(&cmd_rsp, 0, sizeof(cmd_rsp));
792
793 WMI_CMD(WMI_GET_FW_VERSION);
794 if (ret)
795 return -EINVAL;
796
797 priv->fw_version_major = be16_to_cpu(cmd_rsp.major);
798 priv->fw_version_minor = be16_to_cpu(cmd_rsp.minor);
799
800 snprintf(hw->wiphy->fw_version, sizeof(hw->wiphy->fw_version), "%d.%d",
801 priv->fw_version_major,
802 priv->fw_version_minor);
803
804 dev_info(priv->dev, "ath9k_htc: FW Version: %d.%d\n",
805 priv->fw_version_major,
806 priv->fw_version_minor);
807
808 /*
809 * Check if the available FW matches the driver's
810 * required version.
811 */
812 if (priv->fw_version_major != MAJOR_VERSION_REQ ||
813 priv->fw_version_minor < MINOR_VERSION_REQ) {
814 dev_err(priv->dev, "ath9k_htc: Please upgrade to FW version %d.%d\n",
815 MAJOR_VERSION_REQ, MINOR_VERSION_REQ);
816 return -EINVAL;
817 }
818
819 if (priv->fw_version_major == 1 && priv->fw_version_minor < 4)
820 set_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags);
821
822 dev_info(priv->dev, "FW RMW support: %s\n",
823 test_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags) ? "Off" : "On");
824
825 return 0;
826 }
827
ath9k_init_device(struct ath9k_htc_priv * priv,u16 devid,char * product,u32 drv_info)828 static int ath9k_init_device(struct ath9k_htc_priv *priv,
829 u16 devid, char *product, u32 drv_info)
830 {
831 struct ieee80211_hw *hw = priv->hw;
832 struct ath_common *common;
833 struct ath_hw *ah;
834 int error = 0;
835 struct ath_regulatory *reg;
836 char hw_name[64];
837
838 /* Bring up device */
839 error = ath9k_init_priv(priv, devid, product, drv_info);
840 if (error != 0)
841 goto err_init;
842
843 ah = priv->ah;
844 common = ath9k_hw_common(ah);
845 ath9k_set_hw_capab(priv, hw);
846
847 error = ath9k_init_firmware_version(priv);
848 if (error != 0)
849 goto err_fw;
850
851 /* Initialize regulatory */
852 error = ath_regd_init(&common->regulatory, priv->hw->wiphy,
853 ath9k_reg_notifier);
854 if (error)
855 goto err_regd;
856
857 reg = &common->regulatory;
858
859 /* Setup TX */
860 error = ath9k_tx_init(priv);
861 if (error != 0)
862 goto err_tx;
863
864 /* Setup RX */
865 error = ath9k_rx_init(priv);
866 if (error != 0)
867 goto err_rx;
868
869 ath9k_hw_disable(priv->ah);
870 #ifdef CONFIG_MAC80211_LEDS
871 /* must be initialized before ieee80211_register_hw */
872 priv->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(priv->hw,
873 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_htc_tpt_blink,
874 ARRAY_SIZE(ath9k_htc_tpt_blink));
875 #endif
876
877 /* Register with mac80211 */
878 error = ieee80211_register_hw(hw);
879 if (error)
880 goto err_register;
881
882 /* Handle world regulatory */
883 if (!ath_is_world_regd(reg)) {
884 error = regulatory_hint(hw->wiphy, reg->alpha2);
885 if (error)
886 goto err_world;
887 }
888
889 error = ath9k_htc_init_debug(priv->ah);
890 if (error) {
891 ath_err(common, "Unable to create debugfs files\n");
892 goto err_world;
893 }
894
895 ath_dbg(common, CONFIG,
896 "WMI:%d, BCN:%d, CAB:%d, UAPSD:%d, MGMT:%d, BE:%d, BK:%d, VI:%d, VO:%d\n",
897 priv->wmi_cmd_ep,
898 priv->beacon_ep,
899 priv->cab_ep,
900 priv->uapsd_ep,
901 priv->mgmt_ep,
902 priv->data_be_ep,
903 priv->data_bk_ep,
904 priv->data_vi_ep,
905 priv->data_vo_ep);
906
907 ath9k_hw_name(priv->ah, hw_name, sizeof(hw_name));
908 wiphy_info(hw->wiphy, "%s\n", hw_name);
909
910 ath9k_init_leds(priv);
911 ath9k_start_rfkill_poll(priv);
912
913 return 0;
914
915 err_world:
916 ieee80211_unregister_hw(hw);
917 err_register:
918 ath9k_rx_cleanup(priv);
919 err_rx:
920 ath9k_tx_cleanup(priv);
921 err_tx:
922 /* Nothing */
923 err_regd:
924 /* Nothing */
925 err_fw:
926 ath9k_deinit_priv(priv);
927 err_init:
928 return error;
929 }
930
ath9k_htc_probe_device(struct htc_target * htc_handle,struct device * dev,u16 devid,char * product,u32 drv_info)931 int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
932 u16 devid, char *product, u32 drv_info)
933 {
934 struct hif_device_usb *hif_dev;
935 struct ath9k_htc_priv *priv;
936 struct ieee80211_hw *hw;
937 int ret;
938
939 hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops);
940 if (!hw)
941 return -ENOMEM;
942
943 priv = hw->priv;
944 priv->hw = hw;
945 priv->htc = htc_handle;
946 priv->dev = dev;
947 htc_handle->drv_priv = priv;
948 SET_IEEE80211_DEV(hw, priv->dev);
949
950 ret = ath9k_htc_wait_for_target(priv);
951 if (ret)
952 goto err_free;
953
954 priv->wmi = ath9k_init_wmi(priv);
955 if (!priv->wmi) {
956 ret = -EINVAL;
957 goto err_free;
958 }
959
960 ret = ath9k_init_htc_services(priv, devid, drv_info);
961 if (ret)
962 goto err_init;
963
964 ret = ath9k_init_device(priv, devid, product, drv_info);
965 if (ret)
966 goto err_init;
967
968 return 0;
969
970 err_init:
971 ath9k_stop_wmi(priv);
972 hif_dev = (struct hif_device_usb *)htc_handle->hif_dev;
973 ath9k_hif_usb_dealloc_urbs(hif_dev);
974 ath9k_destroy_wmi(priv);
975 err_free:
976 ieee80211_free_hw(hw);
977 return ret;
978 }
979
ath9k_htc_disconnect_device(struct htc_target * htc_handle,bool hotunplug)980 void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
981 {
982 if (htc_handle->drv_priv) {
983
984 /* Check if the device has been yanked out. */
985 if (hotunplug)
986 htc_handle->drv_priv->ah->ah_flags |= AH_UNPLUGGED;
987
988 ath9k_deinit_device(htc_handle->drv_priv);
989 ath9k_stop_wmi(htc_handle->drv_priv);
990 ieee80211_free_hw(htc_handle->drv_priv->hw);
991 }
992 }
993
994 #ifdef CONFIG_PM
995
ath9k_htc_suspend(struct htc_target * htc_handle)996 void ath9k_htc_suspend(struct htc_target *htc_handle)
997 {
998 ath9k_htc_setpower(htc_handle->drv_priv, ATH9K_PM_FULL_SLEEP);
999 }
1000
ath9k_htc_resume(struct htc_target * htc_handle)1001 int ath9k_htc_resume(struct htc_target *htc_handle)
1002 {
1003 struct ath9k_htc_priv *priv = htc_handle->drv_priv;
1004 int ret;
1005
1006 ret = ath9k_htc_wait_for_target(priv);
1007 if (ret)
1008 return ret;
1009
1010 ret = ath9k_init_htc_services(priv, priv->ah->hw_version.devid,
1011 priv->ah->hw_version.usbdev);
1012 ath9k_configure_leds(priv);
1013
1014 return ret;
1015 }
1016 #endif
1017
ath9k_htc_init(void)1018 static int __init ath9k_htc_init(void)
1019 {
1020 if (ath9k_hif_usb_init() < 0) {
1021 pr_err("No USB devices found, driver not installed\n");
1022 return -ENODEV;
1023 }
1024
1025 return 0;
1026 }
1027 module_init(ath9k_htc_init);
1028
ath9k_htc_exit(void)1029 static void __exit ath9k_htc_exit(void)
1030 {
1031 ath9k_hif_usb_exit();
1032 pr_info("Driver unloaded\n");
1033 }
1034 module_exit(ath9k_htc_exit);
1035
