1 /*-
2 * SPDX-License-Identifier: ISC
3 *
4 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2005 Atheros Communications, Inc.
6 * Copyright (c) 2008-2010, Atheros Communications Inc.
7 *
8 * Permission to use, copy, modify, and/or distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 */
20
21 #include "opt_ah.h"
22
23 #include "ah.h"
24 #include "ah_internal.h"
25 #include "ah_devid.h"
26 #ifdef AH_DEBUG
27 #include "ah_desc.h" /* NB: for HAL_PHYERR* */
28 #endif
29
30 #include "ar5416/ar5416.h"
31 #include "ar5416/ar5416reg.h"
32 #include "ar5416/ar5416phy.h"
33 #include "ar5416/ar5416desc.h" /* AR5416_CONTTXMODE */
34 #include "ar5416/ar5416_btcoex.h"
35
36 void
ar5416SetBTCoexInfo(struct ath_hal * ah,HAL_BT_COEX_INFO * btinfo)37 ar5416SetBTCoexInfo(struct ath_hal *ah, HAL_BT_COEX_INFO *btinfo)
38 {
39 struct ath_hal_5416 *ahp = AH5416(ah);
40
41 ahp->ah_btModule = btinfo->bt_module;
42 ahp->ah_btCoexConfigType = btinfo->bt_coex_config;
43 ahp->ah_btActiveGpioSelect = btinfo->bt_gpio_bt_active;
44 ahp->ah_btPriorityGpioSelect = btinfo->bt_gpio_bt_priority;
45 ahp->ah_wlanActiveGpioSelect = btinfo->bt_gpio_wlan_active;
46 ahp->ah_btActivePolarity = btinfo->bt_active_polarity;
47 ahp->ah_btCoexSingleAnt = btinfo->bt_single_ant;
48 ahp->ah_btWlanIsolation = btinfo->bt_isolation;
49 }
50
51 void
ar5416BTCoexConfig(struct ath_hal * ah,HAL_BT_COEX_CONFIG * btconf)52 ar5416BTCoexConfig(struct ath_hal *ah, HAL_BT_COEX_CONFIG *btconf)
53 {
54 struct ath_hal_5416 *ahp = AH5416(ah);
55 HAL_BOOL rxClearPolarity = btconf->bt_rxclear_polarity;
56
57 /*
58 * For Kiwi and Osprey, the polarity of rx_clear is active high.
59 * The bt_rxclear_polarity flag from ath(4) needs to be inverted.
60 */
61 if (AR_SREV_KIWI(ah)) {
62 rxClearPolarity = !btconf->bt_rxclear_polarity;
63 }
64
65 ahp->ah_btCoexMode = (ahp->ah_btCoexMode & AR_BT_QCU_THRESH) |
66 SM(btconf->bt_time_extend, AR_BT_TIME_EXTEND) |
67 SM(btconf->bt_txstate_extend, AR_BT_TXSTATE_EXTEND) |
68 SM(btconf->bt_txframe_extend, AR_BT_TX_FRAME_EXTEND) |
69 SM(btconf->bt_mode, AR_BT_MODE) |
70 SM(btconf->bt_quiet_collision, AR_BT_QUIET) |
71 SM(rxClearPolarity, AR_BT_RX_CLEAR_POLARITY) |
72 SM(btconf->bt_priority_time, AR_BT_PRIORITY_TIME) |
73 SM(btconf->bt_first_slot_time, AR_BT_FIRST_SLOT_TIME);
74
75 ahp->ah_btCoexMode2 |= SM(btconf->bt_hold_rxclear,
76 AR_BT_HOLD_RX_CLEAR);
77
78 if (ahp->ah_btCoexSingleAnt == AH_FALSE) {
79 /* Enable ACK to go out even though BT has higher priority. */
80 ahp->ah_btCoexMode2 |= AR_BT_DISABLE_BT_ANT;
81 }
82 }
83
84 void
ar5416BTCoexSetQcuThresh(struct ath_hal * ah,int qnum)85 ar5416BTCoexSetQcuThresh(struct ath_hal *ah, int qnum)
86 {
87 struct ath_hal_5416 *ahp = AH5416(ah);
88
89 ahp->ah_btCoexMode |= SM(qnum, AR_BT_QCU_THRESH);
90 }
91
92 void
ar5416BTCoexSetWeights(struct ath_hal * ah,u_int32_t stompType)93 ar5416BTCoexSetWeights(struct ath_hal *ah, u_int32_t stompType)
94 {
95 struct ath_hal_5416 *ahp = AH5416(ah);
96
97 if (AR_SREV_KIWI_10_OR_LATER(ah)) {
98 /* TODO: TX RX separate is not enabled. */
99 switch (stompType) {
100 case HAL_BT_COEX_STOMP_AUDIO:
101 /* XXX TODO */
102 case HAL_BT_COEX_STOMP_ALL:
103 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
104 ahp->ah_btCoexWLANWeight = AR5416_STOMP_ALL_WLAN_WGHT;
105 break;
106 case HAL_BT_COEX_STOMP_LOW:
107 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
108 ahp->ah_btCoexWLANWeight = AR5416_STOMP_LOW_WLAN_WGHT;
109 break;
110 case HAL_BT_COEX_STOMP_ALL_FORCE:
111 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
112 ahp->ah_btCoexWLANWeight =
113 AR5416_STOMP_ALL_FORCE_WLAN_WGHT;
114 break;
115 case HAL_BT_COEX_STOMP_LOW_FORCE:
116 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
117 ahp->ah_btCoexWLANWeight =
118 AR5416_STOMP_LOW_FORCE_WLAN_WGHT;
119 break;
120 case HAL_BT_COEX_STOMP_NONE:
121 case HAL_BT_COEX_NO_STOMP:
122 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
123 ahp->ah_btCoexWLANWeight = AR5416_STOMP_NONE_WLAN_WGHT;
124 break;
125 default:
126 /* There is a forceWeight from registry */
127 ahp->ah_btCoexBTWeight = stompType & 0xffff;
128 ahp->ah_btCoexWLANWeight = stompType >> 16;
129 break;
130 }
131 } else {
132 switch (stompType) {
133 case HAL_BT_COEX_STOMP_AUDIO:
134 /* XXX TODO */
135 case HAL_BT_COEX_STOMP_ALL:
136 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
137 ahp->ah_btCoexWLANWeight = AR5416_STOMP_ALL_WLAN_WGHT;
138 break;
139 case HAL_BT_COEX_STOMP_LOW:
140 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
141 ahp->ah_btCoexWLANWeight = AR5416_STOMP_LOW_WLAN_WGHT;
142 break;
143 case HAL_BT_COEX_STOMP_ALL_FORCE:
144 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
145 ahp->ah_btCoexWLANWeight =
146 AR5416_STOMP_ALL_FORCE_WLAN_WGHT;
147 break;
148 case HAL_BT_COEX_STOMP_LOW_FORCE:
149 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
150 ahp->ah_btCoexWLANWeight =
151 AR5416_STOMP_LOW_FORCE_WLAN_WGHT;
152 break;
153 case HAL_BT_COEX_STOMP_NONE:
154 case HAL_BT_COEX_NO_STOMP:
155 ahp->ah_btCoexBTWeight = AR5416_BT_WGHT;
156 ahp->ah_btCoexWLANWeight = AR5416_STOMP_NONE_WLAN_WGHT;
157 break;
158 default:
159 /* There is a forceWeight from registry */
160 ahp->ah_btCoexBTWeight = stompType & 0xffff;
161 ahp->ah_btCoexWLANWeight = stompType >> 16;
162 break;
163 }
164 }
165 }
166
167 void
ar5416BTCoexSetupBmissThresh(struct ath_hal * ah,u_int32_t thresh)168 ar5416BTCoexSetupBmissThresh(struct ath_hal *ah, u_int32_t thresh)
169 {
170 struct ath_hal_5416 *ahp = AH5416(ah);
171
172 ahp->ah_btCoexMode2 |= SM(thresh, AR_BT_BCN_MISS_THRESH);
173 }
174
175 /*
176 * There is no antenna diversity for Owl, Kiwi, etc.
177 *
178 * Kite will override this particular method.
179 */
180 void
ar5416BTCoexAntennaDiversity(struct ath_hal * ah)181 ar5416BTCoexAntennaDiversity(struct ath_hal *ah)
182 {
183 }
184
185 void
ar5416BTCoexSetParameter(struct ath_hal * ah,u_int32_t type,u_int32_t value)186 ar5416BTCoexSetParameter(struct ath_hal *ah, u_int32_t type, u_int32_t value)
187 {
188 struct ath_hal_5416 *ahp = AH5416(ah);
189
190 switch (type) {
191 case HAL_BT_COEX_SET_ACK_PWR:
192 if (value) {
193 ahp->ah_btCoexFlag |= HAL_BT_COEX_FLAG_LOW_ACK_PWR;
194 OS_REG_WRITE(ah, AR_TPC, HAL_BT_COEX_LOW_ACK_POWER);
195 } else {
196 ahp->ah_btCoexFlag &= ~HAL_BT_COEX_FLAG_LOW_ACK_PWR;
197 OS_REG_WRITE(ah, AR_TPC, HAL_BT_COEX_HIGH_ACK_POWER);
198 }
199 break;
200 case HAL_BT_COEX_ANTENNA_DIVERSITY:
201 /* This is overridden for Kite */
202 break;
203 #if 0
204 case HAL_BT_COEX_LOWER_TX_PWR:
205 if (value) {
206 if ((ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_LOWER_TX_PWR) == 0) {
207 ahp->ah_btCoexFlag |= HAL_BT_COEX_FLAG_LOWER_TX_PWR;
208 AH_PRIVATE(ah)->ah_config.ath_hal_desc_tpc = 1;
209 ar5416SetTxPowerLimit(ah, AH_PRIVATE(ah)->ah_power_limit, AH_PRIVATE(ah)->ah_extra_txpow, 0);
210 }
211 }
212 else {
213 if (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_LOWER_TX_PWR) {
214 ahp->ah_btCoexFlag &= ~HAL_BT_COEX_FLAG_LOWER_TX_PWR;
215 AH_PRIVATE(ah)->ah_config.ath_hal_desc_tpc = 0;
216 ar5416SetTxPowerLimit(ah, AH_PRIVATE(ah)->ah_power_limit, AH_PRIVATE(ah)->ah_extra_txpow, 0);
217 }
218 }
219 break;
220 #endif
221 default:
222 break;
223 }
224 }
225
226 void
ar5416BTCoexDisable(struct ath_hal * ah)227 ar5416BTCoexDisable(struct ath_hal *ah)
228 {
229 struct ath_hal_5416 *ahp = AH5416(ah);
230
231 /* Always drive rx_clear_external output as 0 */
232 ar5416GpioSet(ah, ahp->ah_wlanActiveGpioSelect, 0);
233 ar5416GpioCfgOutput(ah, ahp->ah_wlanActiveGpioSelect,
234 HAL_GPIO_OUTPUT_MUX_AS_OUTPUT);
235
236 if (AR_SREV_9271(ah)) {
237 /*
238 * Set wlanActiveGpio to input when disabling BT-COEX to
239 * reduce power consumption
240 */
241 ar5416GpioCfgInput(ah, ahp->ah_wlanActiveGpioSelect);
242 }
243
244 if (ahp->ah_btCoexSingleAnt == AH_TRUE) {
245 OS_REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE,
246 1);
247 OS_REG_RMW_FIELD(ah, AR_MISC_MODE, AR_PCU_BT_ANT_PREVENT_RX,
248 0);
249 }
250
251 OS_REG_WRITE(ah, AR_BT_COEX_MODE, AR_BT_QUIET | AR_BT_MODE);
252 OS_REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0);
253 if (AR_SREV_KIWI_10_OR_LATER(ah))
254 OS_REG_WRITE(ah, AR_BT_COEX_WEIGHT2, 0);
255 OS_REG_WRITE(ah, AR_BT_COEX_MODE2, 0);
256
257 ahp->ah_btCoexEnabled = AH_FALSE;
258 }
259
260 int
ar5416BTCoexEnable(struct ath_hal * ah)261 ar5416BTCoexEnable(struct ath_hal *ah)
262 {
263 struct ath_hal_5416 *ahp = AH5416(ah);
264
265 /* Program coex mode and weight registers to actually enable coex */
266 OS_REG_WRITE(ah, AR_BT_COEX_MODE, ahp->ah_btCoexMode);
267 OS_REG_WRITE(ah, AR_BT_COEX_WEIGHT,
268 SM(ahp->ah_btCoexWLANWeight & 0xFFFF, AR_BT_WL_WGHT) |
269 SM(ahp->ah_btCoexBTWeight & 0xFFFF, AR_BT_BT_WGHT));
270 if (AR_SREV_KIWI_10_OR_LATER(ah)) {
271 OS_REG_WRITE(ah, AR_BT_COEX_WEIGHT2,
272 SM(ahp->ah_btCoexWLANWeight >> 16, AR_BT_WL_WGHT));
273 }
274 OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
275
276 /* Added Select GPIO5~8 instaed SPI */
277 if (AR_SREV_9271(ah)) {
278 uint32_t val;
279
280 val = OS_REG_READ(ah, AR9271_CLOCK_CONTROL);
281 val &= 0xFFFFFEFF;
282 OS_REG_WRITE(ah, AR9271_CLOCK_CONTROL, val);
283 }
284
285 if (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_LOW_ACK_PWR)
286 OS_REG_WRITE(ah, AR_TPC, HAL_BT_COEX_LOW_ACK_POWER);
287 else
288 OS_REG_WRITE(ah, AR_TPC, HAL_BT_COEX_HIGH_ACK_POWER);
289
290 if (ahp->ah_btCoexSingleAnt == AH_TRUE) {
291 OS_REG_RMW_FIELD(ah, AR_QUIET1,
292 AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
293 /* XXX should update miscMode? */
294 OS_REG_RMW_FIELD(ah, AR_MISC_MODE,
295 AR_PCU_BT_ANT_PREVENT_RX, 1);
296 } else {
297 OS_REG_RMW_FIELD(ah, AR_QUIET1,
298 AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
299 /* XXX should update miscMode? */
300 OS_REG_RMW_FIELD(ah, AR_MISC_MODE,
301 AR_PCU_BT_ANT_PREVENT_RX, 0);
302 }
303
304 if (ahp->ah_btCoexConfigType == HAL_BT_COEX_CFG_3WIRE) {
305 /* For 3-wire, configure the desired GPIO port for rx_clear */
306 ar5416GpioCfgOutput(ah, ahp->ah_wlanActiveGpioSelect,
307 HAL_GPIO_OUTPUT_MUX_AS_WLAN_ACTIVE);
308 } else {
309 /*
310 * For 2-wire, configure the desired GPIO port
311 * for TX_FRAME output
312 */
313 ar5416GpioCfgOutput(ah, ahp->ah_wlanActiveGpioSelect,
314 HAL_GPIO_OUTPUT_MUX_AS_TX_FRAME);
315 }
316
317 /*
318 * Enable a weak pull down on BT_ACTIVE.
319 * When BT device is disabled, BT_ACTIVE might be floating.
320 */
321 OS_REG_RMW(ah, AR_GPIO_PDPU,
322 (0x2 << (ahp->ah_btActiveGpioSelect * 2)),
323 (0x3 << (ahp->ah_btActiveGpioSelect * 2)));
324
325 ahp->ah_btCoexEnabled = AH_TRUE;
326
327 return (0);
328 }
329
330 void
ar5416InitBTCoex(struct ath_hal * ah)331 ar5416InitBTCoex(struct ath_hal *ah)
332 {
333 struct ath_hal_5416 *ahp = AH5416(ah);
334
335 HALDEBUG(ah, HAL_DEBUG_BT_COEX,
336 "%s: called; configType=%d\n",
337 __func__,
338 ahp->ah_btCoexConfigType);
339
340 if (ahp->ah_btCoexConfigType == HAL_BT_COEX_CFG_3WIRE) {
341 OS_REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
342 (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB |
343 AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB));
344
345 /*
346 * Set input mux for bt_prority_async and
347 * bt_active_async to GPIO pins
348 */
349 OS_REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
350 AR_GPIO_INPUT_MUX1_BT_ACTIVE,
351 ahp->ah_btActiveGpioSelect);
352 OS_REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
353 AR_GPIO_INPUT_MUX1_BT_PRIORITY,
354 ahp->ah_btPriorityGpioSelect);
355
356 /*
357 * Configure the desired GPIO ports for input
358 */
359 ar5416GpioCfgInput(ah, ahp->ah_btActiveGpioSelect);
360 ar5416GpioCfgInput(ah, ahp->ah_btPriorityGpioSelect);
361
362 /*
363 * Configure the antenna diversity setup.
364 * It's a no-op for AR9287; AR9285 overrides this
365 * as required.
366 */
367 AH5416(ah)->ah_btCoexSetDiversity(ah);
368
369 if (ahp->ah_btCoexEnabled)
370 ar5416BTCoexEnable(ah);
371 else
372 ar5416BTCoexDisable(ah);
373 } else if (ahp->ah_btCoexConfigType != HAL_BT_COEX_CFG_NONE) {
374 /* 2-wire */
375 if (ahp->ah_btCoexEnabled) {
376 /* Connect bt_active_async to baseband */
377 OS_REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL,
378 (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF |
379 AR_GPIO_INPUT_EN_VAL_BT_FREQUENCY_DEF));
380 OS_REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
381 AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB);
382
383 /*
384 * Set input mux for bt_prority_async and
385 * bt_active_async to GPIO pins
386 */
387 OS_REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
388 AR_GPIO_INPUT_MUX1_BT_ACTIVE,
389 ahp->ah_btActiveGpioSelect);
390
391 /* Configure the desired GPIO ports for input */
392 ar5416GpioCfgInput(ah, ahp->ah_btActiveGpioSelect);
393
394 /* Enable coexistence on initialization */
395 ar5416BTCoexEnable(ah);
396 }
397 }
398 }
399