Commit | Line | Data |
---|---|---|
7dc181c2 RM |
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 | ||
9e25365f MSS |
17 | #include <linux/dma-mapping.h> |
18 | #include <linux/slab.h> | |
19 | ||
7dc181c2 RM |
20 | #include "ath9k.h" |
21 | #include "mci.h" | |
22 | ||
a197b76c | 23 | static const u8 ath_mci_duty_cycle[] = { 55, 50, 60, 70, 80, 85, 90, 95, 98 }; |
7dc181c2 RM |
24 | |
25 | static struct ath_mci_profile_info* | |
26 | ath_mci_find_profile(struct ath_mci_profile *mci, | |
27 | struct ath_mci_profile_info *info) | |
28 | { | |
29 | struct ath_mci_profile_info *entry; | |
30 | ||
9e2e0c84 RM |
31 | if (list_empty(&mci->info)) |
32 | return NULL; | |
33 | ||
7dc181c2 RM |
34 | list_for_each_entry(entry, &mci->info, list) { |
35 | if (entry->conn_handle == info->conn_handle) | |
9e2e0c84 | 36 | return entry; |
7dc181c2 | 37 | } |
9e2e0c84 | 38 | return NULL; |
7dc181c2 RM |
39 | } |
40 | ||
41 | static bool ath_mci_add_profile(struct ath_common *common, | |
42 | struct ath_mci_profile *mci, | |
43 | struct ath_mci_profile_info *info) | |
44 | { | |
45 | struct ath_mci_profile_info *entry; | |
46 | ||
47 | if ((mci->num_sco == ATH_MCI_MAX_SCO_PROFILE) && | |
682dd04b | 48 | (info->type == MCI_GPM_COEX_PROFILE_VOICE)) |
7dc181c2 | 49 | return false; |
7dc181c2 RM |
50 | |
51 | if (((NUM_PROF(mci) - mci->num_sco) == ATH_MCI_MAX_ACL_PROFILE) && | |
682dd04b | 52 | (info->type != MCI_GPM_COEX_PROFILE_VOICE)) |
7dc181c2 | 53 | return false; |
7dc181c2 | 54 | |
3c7992e3 | 55 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
9e2e0c84 RM |
56 | if (!entry) |
57 | return false; | |
7dc181c2 | 58 | |
9e2e0c84 RM |
59 | memcpy(entry, info, 10); |
60 | INC_PROF(mci, info); | |
61 | list_add_tail(&entry->list, &mci->info); | |
682dd04b | 62 | |
7dc181c2 RM |
63 | return true; |
64 | } | |
65 | ||
66 | static void ath_mci_del_profile(struct ath_common *common, | |
67 | struct ath_mci_profile *mci, | |
9e2e0c84 | 68 | struct ath_mci_profile_info *entry) |
7dc181c2 | 69 | { |
682dd04b | 70 | if (!entry) |
7dc181c2 | 71 | return; |
682dd04b | 72 | |
7dc181c2 RM |
73 | DEC_PROF(mci, entry); |
74 | list_del(&entry->list); | |
75 | kfree(entry); | |
76 | } | |
77 | ||
78 | void ath_mci_flush_profile(struct ath_mci_profile *mci) | |
79 | { | |
80 | struct ath_mci_profile_info *info, *tinfo; | |
81 | ||
9e2e0c84 | 82 | mci->aggr_limit = 0; |
d92bb98f | 83 | mci->num_mgmt = 0; |
9e2e0c84 RM |
84 | |
85 | if (list_empty(&mci->info)) | |
86 | return; | |
87 | ||
7dc181c2 RM |
88 | list_for_each_entry_safe(info, tinfo, &mci->info, list) { |
89 | list_del(&info->list); | |
90 | DEC_PROF(mci, info); | |
91 | kfree(info); | |
92 | } | |
7dc181c2 RM |
93 | } |
94 | ||
95 | static void ath_mci_adjust_aggr_limit(struct ath_btcoex *btcoex) | |
96 | { | |
97 | struct ath_mci_profile *mci = &btcoex->mci; | |
98 | u32 wlan_airtime = btcoex->btcoex_period * | |
99 | (100 - btcoex->duty_cycle) / 100; | |
100 | ||
101 | /* | |
102 | * Scale: wlan_airtime is in ms, aggr_limit is in 0.25 ms. | |
103 | * When wlan_airtime is less than 4ms, aggregation limit has to be | |
104 | * adjusted half of wlan_airtime to ensure that the aggregation can fit | |
105 | * without collision with BT traffic. | |
106 | */ | |
107 | if ((wlan_airtime <= 4) && | |
108 | (!mci->aggr_limit || (mci->aggr_limit > (2 * wlan_airtime)))) | |
109 | mci->aggr_limit = 2 * wlan_airtime; | |
110 | } | |
111 | ||
112 | static void ath_mci_update_scheme(struct ath_softc *sc) | |
113 | { | |
114 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
115 | struct ath_btcoex *btcoex = &sc->btcoex; | |
116 | struct ath_mci_profile *mci = &btcoex->mci; | |
0603143e | 117 | struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci; |
7dc181c2 RM |
118 | struct ath_mci_profile_info *info; |
119 | u32 num_profile = NUM_PROF(mci); | |
120 | ||
0603143e RM |
121 | if (mci_hw->config & ATH_MCI_CONFIG_DISABLE_TUNING) |
122 | goto skip_tuning; | |
123 | ||
9e62817b | 124 | mci->aggr_limit = 0; |
a197b76c | 125 | btcoex->duty_cycle = ath_mci_duty_cycle[num_profile]; |
9e62817b RM |
126 | btcoex->btcoex_period = ATH_MCI_DEF_BT_PERIOD; |
127 | if (NUM_PROF(mci)) | |
128 | btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW; | |
129 | else | |
130 | btcoex->bt_stomp_type = mci->num_mgmt ? ATH_BTCOEX_STOMP_ALL : | |
131 | ATH_BTCOEX_STOMP_LOW; | |
a197b76c | 132 | |
7dc181c2 RM |
133 | if (num_profile == 1) { |
134 | info = list_first_entry(&mci->info, | |
135 | struct ath_mci_profile_info, | |
136 | list); | |
0603143e RM |
137 | if (mci->num_sco) { |
138 | if (info->T == 12) | |
139 | mci->aggr_limit = 8; | |
140 | else if (info->T == 6) { | |
141 | mci->aggr_limit = 6; | |
142 | btcoex->duty_cycle = 30; | |
9e62817b RM |
143 | } else |
144 | mci->aggr_limit = 6; | |
d2182b69 | 145 | ath_dbg(common, MCI, |
0603143e RM |
146 | "Single SCO, aggregation limit %d 1/4 ms\n", |
147 | mci->aggr_limit); | |
148 | } else if (mci->num_pan || mci->num_other_acl) { | |
149 | /* | |
150 | * For single PAN/FTP profile, allocate 35% for BT | |
151 | * to improve WLAN throughput. | |
152 | */ | |
153 | btcoex->duty_cycle = 35; | |
154 | btcoex->btcoex_period = 53; | |
d2182b69 | 155 | ath_dbg(common, MCI, |
0603143e RM |
156 | "Single PAN/FTP bt period %d ms dutycycle %d\n", |
157 | btcoex->duty_cycle, btcoex->btcoex_period); | |
158 | } else if (mci->num_hid) { | |
7dc181c2 | 159 | btcoex->duty_cycle = 30; |
0603143e | 160 | mci->aggr_limit = 6; |
d2182b69 | 161 | ath_dbg(common, MCI, |
7dc181c2 | 162 | "Multiple attempt/timeout single HID " |
0603143e | 163 | "aggregation limit 1.5 ms dutycycle 30%%\n"); |
7dc181c2 | 164 | } |
0603143e RM |
165 | } else if (num_profile == 2) { |
166 | if (mci->num_hid == 2) | |
167 | btcoex->duty_cycle = 30; | |
7dc181c2 | 168 | mci->aggr_limit = 6; |
d2182b69 | 169 | ath_dbg(common, MCI, |
0603143e RM |
170 | "Two BT profiles aggr limit 1.5 ms dutycycle %d%%\n", |
171 | btcoex->duty_cycle); | |
172 | } else if (num_profile >= 3) { | |
173 | mci->aggr_limit = 4; | |
174 | ath_dbg(common, MCI, | |
175 | "Three or more profiles aggregation limit 1 ms\n"); | |
7dc181c2 RM |
176 | } |
177 | ||
0603143e | 178 | skip_tuning: |
7dc181c2 RM |
179 | if (IS_CHAN_2GHZ(sc->sc_ah->curchan)) { |
180 | if (IS_CHAN_HT(sc->sc_ah->curchan)) | |
181 | ath_mci_adjust_aggr_limit(btcoex); | |
182 | else | |
183 | btcoex->btcoex_period >>= 1; | |
184 | } | |
185 | ||
7dc181c2 | 186 | ath9k_btcoex_timer_pause(sc); |
c32cdbd8 | 187 | ath9k_hw_btcoex_disable(sc->sc_ah); |
7dc181c2 RM |
188 | |
189 | if (IS_CHAN_5GHZ(sc->sc_ah->curchan)) | |
190 | return; | |
191 | ||
a197b76c | 192 | btcoex->duty_cycle += (mci->num_bdr ? ATH_MCI_BDR_DUTY_CYCLE : 0); |
7dc181c2 RM |
193 | if (btcoex->duty_cycle > ATH_MCI_MAX_DUTY_CYCLE) |
194 | btcoex->duty_cycle = ATH_MCI_MAX_DUTY_CYCLE; | |
195 | ||
dfd0587a | 196 | btcoex->btcoex_no_stomp = btcoex->btcoex_period * 1000 * |
682dd04b | 197 | (100 - btcoex->duty_cycle) / 100; |
7dc181c2 RM |
198 | |
199 | ath9k_hw_btcoex_enable(sc->sc_ah); | |
200 | ath9k_btcoex_timer_resume(sc); | |
201 | } | |
202 | ||
83ad49a9 RM |
203 | static void ath_mci_wait_btcal_done(struct ath_softc *sc) |
204 | { | |
205 | struct ath_hw *ah = sc->sc_ah; | |
206 | ||
207 | /* Stop tx & rx */ | |
208 | ieee80211_stop_queues(sc->hw); | |
209 | ath_stoprecv(sc); | |
210 | ath_drain_all_txq(sc, false); | |
211 | ||
212 | /* Wait for cal done */ | |
213 | ar9003_mci_start_reset(ah, ah->curchan); | |
214 | ||
215 | /* Resume tx & rx */ | |
216 | ath_startrecv(sc); | |
217 | ieee80211_wake_queues(sc->hw); | |
218 | } | |
219 | ||
19686ddf MSS |
220 | static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload) |
221 | { | |
222 | struct ath_hw *ah = sc->sc_ah; | |
223 | struct ath_common *common = ath9k_hw_common(ah); | |
6d97be48 | 224 | struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci; |
19686ddf MSS |
225 | u32 payload[4] = {0, 0, 0, 0}; |
226 | ||
227 | switch (opcode) { | |
228 | case MCI_GPM_BT_CAL_REQ: | |
6d97be48 | 229 | if (mci_hw->bt_state == MCI_BT_AWAKE) { |
4653356f | 230 | mci_hw->bt_state = MCI_BT_CAL_START; |
83ad49a9 | 231 | ath_mci_wait_btcal_done(sc); |
682dd04b | 232 | } |
6d97be48 | 233 | ath_dbg(common, MCI, "MCI State : %d\n", mci_hw->bt_state); |
19686ddf | 234 | break; |
19686ddf | 235 | case MCI_GPM_BT_CAL_GRANT: |
19686ddf MSS |
236 | MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_DONE); |
237 | ar9003_mci_send_message(sc->sc_ah, MCI_GPM, 0, payload, | |
238 | 16, false, true); | |
239 | break; | |
19686ddf | 240 | default: |
682dd04b | 241 | ath_dbg(common, MCI, "Unknown GPM CAL message\n"); |
19686ddf MSS |
242 | break; |
243 | } | |
244 | } | |
245 | ||
3c7992e3 RM |
246 | static void ath9k_mci_work(struct work_struct *work) |
247 | { | |
248 | struct ath_softc *sc = container_of(work, struct ath_softc, mci_work); | |
249 | ||
250 | ath_mci_update_scheme(sc); | |
251 | } | |
252 | ||
e5f0a276 FF |
253 | static void ath_mci_process_profile(struct ath_softc *sc, |
254 | struct ath_mci_profile_info *info) | |
7dc181c2 RM |
255 | { |
256 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
257 | struct ath_btcoex *btcoex = &sc->btcoex; | |
258 | struct ath_mci_profile *mci = &btcoex->mci; | |
9e2e0c84 RM |
259 | struct ath_mci_profile_info *entry = NULL; |
260 | ||
261 | entry = ath_mci_find_profile(mci, info); | |
305dd09f BS |
262 | if (entry) { |
263 | /* | |
264 | * Two MCI interrupts are generated while connecting to | |
265 | * headset and A2DP profile, but only one MCI interrupt | |
266 | * is generated with last added profile type while disconnecting | |
267 | * both profiles. | |
268 | * So while adding second profile type decrement | |
269 | * the first one. | |
270 | */ | |
271 | if (entry->type != info->type) { | |
272 | DEC_PROF(mci, entry); | |
273 | INC_PROF(mci, info); | |
274 | } | |
9e2e0c84 | 275 | memcpy(entry, info, 10); |
305dd09f | 276 | } |
7dc181c2 RM |
277 | |
278 | if (info->start) { | |
9e2e0c84 | 279 | if (!entry && !ath_mci_add_profile(common, mci, info)) |
7dc181c2 RM |
280 | return; |
281 | } else | |
9e2e0c84 | 282 | ath_mci_del_profile(common, mci, entry); |
7dc181c2 | 283 | |
3c7992e3 | 284 | ieee80211_queue_work(sc->hw, &sc->mci_work); |
7dc181c2 RM |
285 | } |
286 | ||
e5f0a276 FF |
287 | static void ath_mci_process_status(struct ath_softc *sc, |
288 | struct ath_mci_profile_status *status) | |
7dc181c2 | 289 | { |
7dc181c2 RM |
290 | struct ath_btcoex *btcoex = &sc->btcoex; |
291 | struct ath_mci_profile *mci = &btcoex->mci; | |
292 | struct ath_mci_profile_info info; | |
293 | int i = 0, old_num_mgmt = mci->num_mgmt; | |
294 | ||
295 | /* Link status type are not handled */ | |
682dd04b | 296 | if (status->is_link) |
7dc181c2 | 297 | return; |
7dc181c2 | 298 | |
7dc181c2 | 299 | info.conn_handle = status->conn_handle; |
682dd04b | 300 | if (ath_mci_find_profile(mci, &info)) |
7dc181c2 | 301 | return; |
682dd04b SM |
302 | |
303 | if (status->conn_handle >= ATH_MCI_MAX_PROFILE) | |
7dc181c2 | 304 | return; |
682dd04b | 305 | |
7dc181c2 RM |
306 | if (status->is_critical) |
307 | __set_bit(status->conn_handle, mci->status); | |
308 | else | |
309 | __clear_bit(status->conn_handle, mci->status); | |
310 | ||
311 | mci->num_mgmt = 0; | |
312 | do { | |
313 | if (test_bit(i, mci->status)) | |
314 | mci->num_mgmt++; | |
315 | } while (++i < ATH_MCI_MAX_PROFILE); | |
316 | ||
317 | if (old_num_mgmt != mci->num_mgmt) | |
3c7992e3 | 318 | ieee80211_queue_work(sc->hw, &sc->mci_work); |
7dc181c2 | 319 | } |
9e25365f | 320 | |
19686ddf MSS |
321 | static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload) |
322 | { | |
323 | struct ath_hw *ah = sc->sc_ah; | |
324 | struct ath_mci_profile_info profile_info; | |
325 | struct ath_mci_profile_status profile_status; | |
326 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
e1763d3f | 327 | u8 major, minor; |
19686ddf MSS |
328 | u32 seq_num; |
329 | ||
d92bb98f RM |
330 | if (ar9003_mci_state(ah, MCI_STATE_NEED_FLUSH_BT_INFO) && |
331 | ar9003_mci_state(ah, MCI_STATE_ENABLE)) { | |
332 | ath_dbg(common, MCI, "(MCI) Need to flush BT profiles\n"); | |
333 | ath_mci_flush_profile(&sc->btcoex.mci); | |
334 | ar9003_mci_state(ah, MCI_STATE_SEND_STATUS_QUERY); | |
335 | } | |
336 | ||
19686ddf | 337 | switch (opcode) { |
19686ddf | 338 | case MCI_GPM_COEX_VERSION_QUERY: |
b98ccec0 | 339 | ar9003_mci_state(ah, MCI_STATE_SEND_WLAN_COEX_VERSION); |
19686ddf | 340 | break; |
19686ddf | 341 | case MCI_GPM_COEX_VERSION_RESPONSE: |
19686ddf MSS |
342 | major = *(rx_payload + MCI_GPM_COEX_B_MAJOR_VERSION); |
343 | minor = *(rx_payload + MCI_GPM_COEX_B_MINOR_VERSION); | |
e1763d3f | 344 | ar9003_mci_set_bt_version(ah, major, minor); |
19686ddf | 345 | break; |
19686ddf | 346 | case MCI_GPM_COEX_STATUS_QUERY: |
2d340ac8 | 347 | ar9003_mci_send_wlan_channels(ah); |
19686ddf | 348 | break; |
19686ddf | 349 | case MCI_GPM_COEX_BT_PROFILE_INFO: |
19686ddf MSS |
350 | memcpy(&profile_info, |
351 | (rx_payload + MCI_GPM_COEX_B_PROFILE_TYPE), 10); | |
352 | ||
682dd04b SM |
353 | if ((profile_info.type == MCI_GPM_COEX_PROFILE_UNKNOWN) || |
354 | (profile_info.type >= MCI_GPM_COEX_PROFILE_MAX)) { | |
d2182b69 | 355 | ath_dbg(common, MCI, |
682dd04b | 356 | "Illegal profile type = %d, state = %d\n", |
d2182b69 | 357 | profile_info.type, |
19686ddf MSS |
358 | profile_info.start); |
359 | break; | |
360 | } | |
361 | ||
362 | ath_mci_process_profile(sc, &profile_info); | |
363 | break; | |
19686ddf MSS |
364 | case MCI_GPM_COEX_BT_STATUS_UPDATE: |
365 | profile_status.is_link = *(rx_payload + | |
366 | MCI_GPM_COEX_B_STATUS_TYPE); | |
367 | profile_status.conn_handle = *(rx_payload + | |
368 | MCI_GPM_COEX_B_STATUS_LINKID); | |
369 | profile_status.is_critical = *(rx_payload + | |
370 | MCI_GPM_COEX_B_STATUS_STATE); | |
371 | ||
372 | seq_num = *((u32 *)(rx_payload + 12)); | |
d2182b69 | 373 | ath_dbg(common, MCI, |
d8fffb4a | 374 | "BT_Status_Update: is_link=%d, linkId=%d, state=%d, SEQ=%u\n", |
19686ddf MSS |
375 | profile_status.is_link, profile_status.conn_handle, |
376 | profile_status.is_critical, seq_num); | |
377 | ||
378 | ath_mci_process_status(sc, &profile_status); | |
379 | break; | |
19686ddf | 380 | default: |
682dd04b | 381 | ath_dbg(common, MCI, "Unknown GPM COEX message = 0x%02x\n", opcode); |
19686ddf MSS |
382 | break; |
383 | } | |
384 | } | |
9e25365f | 385 | |
9e25365f MSS |
386 | int ath_mci_setup(struct ath_softc *sc) |
387 | { | |
388 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
389 | struct ath_mci_coex *mci = &sc->mci_coex; | |
ea510e4b | 390 | struct ath_mci_buf *buf = &mci->sched_buf; |
9e25365f | 391 | |
ea510e4b SM |
392 | buf->bf_addr = dma_alloc_coherent(sc->dev, |
393 | ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE, | |
394 | &buf->bf_paddr, GFP_KERNEL); | |
9e25365f | 395 | |
ea510e4b | 396 | if (buf->bf_addr == NULL) { |
d2182b69 | 397 | ath_dbg(common, FATAL, "MCI buffer alloc failed\n"); |
ea510e4b | 398 | return -ENOMEM; |
9e25365f MSS |
399 | } |
400 | ||
ea510e4b SM |
401 | memset(buf->bf_addr, MCI_GPM_RSVD_PATTERN, |
402 | ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE); | |
9e25365f | 403 | |
ea510e4b | 404 | mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE; |
9e25365f MSS |
405 | |
406 | mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE; | |
ea510e4b | 407 | mci->gpm_buf.bf_addr = (u8 *)mci->sched_buf.bf_addr + mci->sched_buf.bf_len; |
9e25365f MSS |
408 | mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len; |
409 | ||
9e25365f MSS |
410 | ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr, |
411 | mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4), | |
412 | mci->sched_buf.bf_paddr); | |
ea510e4b | 413 | |
3c7992e3 | 414 | INIT_WORK(&sc->mci_work, ath9k_mci_work); |
ea510e4b SM |
415 | ath_dbg(common, MCI, "MCI Initialized\n"); |
416 | ||
417 | return 0; | |
9e25365f MSS |
418 | } |
419 | ||
420 | void ath_mci_cleanup(struct ath_softc *sc) | |
421 | { | |
ea510e4b | 422 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
9e25365f MSS |
423 | struct ath_hw *ah = sc->sc_ah; |
424 | struct ath_mci_coex *mci = &sc->mci_coex; | |
ea510e4b | 425 | struct ath_mci_buf *buf = &mci->sched_buf; |
9e25365f | 426 | |
ea510e4b SM |
427 | if (buf->bf_addr) |
428 | dma_free_coherent(sc->dev, | |
429 | ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE, | |
430 | buf->bf_addr, buf->bf_paddr); | |
431 | ||
9e25365f | 432 | ar9003_mci_cleanup(ah); |
ea510e4b SM |
433 | |
434 | ath_dbg(common, MCI, "MCI De-Initialized\n"); | |
9e25365f | 435 | } |
19686ddf MSS |
436 | |
437 | void ath_mci_intr(struct ath_softc *sc) | |
438 | { | |
439 | struct ath_mci_coex *mci = &sc->mci_coex; | |
440 | struct ath_hw *ah = sc->sc_ah; | |
441 | struct ath_common *common = ath9k_hw_common(ah); | |
6d97be48 | 442 | struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci; |
19686ddf MSS |
443 | u32 mci_int, mci_int_rxmsg; |
444 | u32 offset, subtype, opcode; | |
445 | u32 *pgpm; | |
446 | u32 more_data = MCI_GPM_MORE; | |
447 | bool skip_gpm = false; | |
448 | ||
449 | ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg); | |
450 | ||
b98ccec0 | 451 | if (ar9003_mci_state(ah, MCI_STATE_ENABLE) == 0) { |
506847ad | 452 | ar9003_mci_get_next_gpm_offset(ah, true, NULL); |
19686ddf MSS |
453 | return; |
454 | } | |
455 | ||
456 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE) { | |
457 | u32 payload[4] = { 0xffffffff, 0xffffffff, | |
458 | 0xffffffff, 0xffffff00}; | |
459 | ||
460 | /* | |
461 | * The following REMOTE_RESET and SYS_WAKING used to sent | |
462 | * only when BT wake up. Now they are always sent, as a | |
463 | * recovery method to reset BT MCI's RX alignment. | |
464 | */ | |
19686ddf MSS |
465 | ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0, |
466 | payload, 16, true, false); | |
19686ddf MSS |
467 | ar9003_mci_send_message(ah, MCI_SYS_WAKING, 0, |
468 | NULL, 0, true, false); | |
469 | ||
470 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE; | |
b98ccec0 | 471 | ar9003_mci_state(ah, MCI_STATE_RESET_REQ_WAKE); |
19686ddf MSS |
472 | |
473 | /* | |
474 | * always do this for recovery and 2G/5G toggling and LNA_TRANS | |
475 | */ | |
b98ccec0 | 476 | ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE); |
19686ddf MSS |
477 | } |
478 | ||
19686ddf MSS |
479 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING) { |
480 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING; | |
481 | ||
6d97be48 | 482 | if ((mci_hw->bt_state == MCI_BT_SLEEP) && |
b98ccec0 RM |
483 | (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) != |
484 | MCI_BT_SLEEP)) | |
485 | ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE); | |
19686ddf MSS |
486 | } |
487 | ||
488 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) { | |
19686ddf MSS |
489 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING; |
490 | ||
6d97be48 | 491 | if ((mci_hw->bt_state == MCI_BT_AWAKE) && |
b98ccec0 RM |
492 | (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) != |
493 | MCI_BT_AWAKE)) | |
9330969b | 494 | mci_hw->bt_state = MCI_BT_SLEEP; |
19686ddf MSS |
495 | } |
496 | ||
497 | if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) || | |
498 | (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) { | |
b98ccec0 | 499 | ar9003_mci_state(ah, MCI_STATE_RECOVER_RX); |
19686ddf MSS |
500 | skip_gpm = true; |
501 | } | |
502 | ||
503 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO) { | |
19686ddf | 504 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO; |
b98ccec0 | 505 | offset = ar9003_mci_state(ah, MCI_STATE_LAST_SCHD_MSG_OFFSET); |
19686ddf MSS |
506 | } |
507 | ||
508 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_GPM) { | |
19686ddf MSS |
509 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_GPM; |
510 | ||
511 | while (more_data == MCI_GPM_MORE) { | |
512 | ||
513 | pgpm = mci->gpm_buf.bf_addr; | |
506847ad RM |
514 | offset = ar9003_mci_get_next_gpm_offset(ah, false, |
515 | &more_data); | |
19686ddf MSS |
516 | |
517 | if (offset == MCI_GPM_INVALID) | |
518 | break; | |
519 | ||
520 | pgpm += (offset >> 2); | |
521 | ||
522 | /* | |
523 | * The first dword is timer. | |
524 | * The real data starts from 2nd dword. | |
525 | */ | |
19686ddf MSS |
526 | subtype = MCI_GPM_TYPE(pgpm); |
527 | opcode = MCI_GPM_OPCODE(pgpm); | |
528 | ||
682dd04b SM |
529 | if (skip_gpm) |
530 | goto recycle; | |
531 | ||
532 | if (MCI_GPM_IS_CAL_TYPE(subtype)) { | |
533 | ath_mci_cal_msg(sc, subtype, (u8 *)pgpm); | |
534 | } else { | |
535 | switch (subtype) { | |
536 | case MCI_GPM_COEX_AGENT: | |
537 | ath_mci_msg(sc, opcode, (u8 *)pgpm); | |
538 | break; | |
539 | default: | |
540 | break; | |
19686ddf MSS |
541 | } |
542 | } | |
682dd04b | 543 | recycle: |
19686ddf MSS |
544 | MCI_GPM_RECYCLE(pgpm); |
545 | } | |
546 | } | |
547 | ||
548 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_HW_MSG_MASK) { | |
19686ddf MSS |
549 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL) |
550 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL; | |
551 | ||
682dd04b | 552 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_INFO) |
19686ddf | 553 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_INFO; |
19686ddf MSS |
554 | |
555 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO) { | |
26e942b7 RM |
556 | int value_dbm = MS(mci_hw->cont_status, |
557 | AR_MCI_CONT_RSSI_POWER); | |
19686ddf MSS |
558 | |
559 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_INFO; | |
560 | ||
26e942b7 RM |
561 | ath_dbg(common, MCI, |
562 | "MCI CONT_INFO: (%s) pri = %d pwr = %d dBm\n", | |
563 | MS(mci_hw->cont_status, AR_MCI_CONT_TXRX) ? | |
564 | "tx" : "rx", | |
565 | MS(mci_hw->cont_status, AR_MCI_CONT_PRIORITY), | |
566 | value_dbm); | |
19686ddf MSS |
567 | } |
568 | ||
682dd04b | 569 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_NACK) |
19686ddf | 570 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_NACK; |
19686ddf | 571 | |
682dd04b | 572 | if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_RST) |
19686ddf | 573 | mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_RST; |
19686ddf MSS |
574 | } |
575 | ||
576 | if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) || | |
d92bb98f | 577 | (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) { |
19686ddf MSS |
578 | mci_int &= ~(AR_MCI_INTERRUPT_RX_INVALID_HDR | |
579 | AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT); | |
d92bb98f RM |
580 | ath_mci_msg(sc, MCI_GPM_COEX_NOOP, NULL); |
581 | } | |
19686ddf | 582 | } |
e270e776 SM |
583 | |
584 | void ath_mci_enable(struct ath_softc *sc) | |
585 | { | |
586 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); | |
587 | ||
588 | if (!common->btcoex_enabled) | |
589 | return; | |
590 | ||
591 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) | |
592 | sc->sc_ah->imask |= ATH9K_INT_MCI; | |
593 | } |