2 * Copyright (c) 2008-2011 Atheros Communications Inc.
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.
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.
17 #include <linux/export.h>
20 #include "ar9003_phy.h"
21 #include "ar9003_mci.h"
23 static void ar9003_mci_reset_req_wakeup(struct ath_hw *ah)
25 REG_RMW_FIELD(ah, AR_MCI_COMMAND2,
26 AR_MCI_COMMAND2_RESET_REQ_WAKEUP, 1);
28 REG_RMW_FIELD(ah, AR_MCI_COMMAND2,
29 AR_MCI_COMMAND2_RESET_REQ_WAKEUP, 0);
32 static int ar9003_mci_wait_for_interrupt(struct ath_hw *ah, u32 address,
33 u32 bit_position, int time_out)
35 struct ath_common *common = ath9k_hw_common(ah);
38 if (!(REG_READ(ah, address) & bit_position)) {
47 REG_WRITE(ah, address, bit_position);
49 if (address != AR_MCI_INTERRUPT_RX_MSG_RAW)
52 if (bit_position & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE)
53 ar9003_mci_reset_req_wakeup(ah);
55 if (bit_position & (AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING |
56 AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING))
57 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
58 AR_MCI_INTERRUPT_REMOTE_SLEEP_UPDATE);
60 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW, AR_MCI_INTERRUPT_RX_MSG);
66 "MCI Wait for Reg 0x%08x = 0x%08x timeout\n",
67 address, bit_position);
69 "MCI INT_RAW = 0x%08x, RX_MSG_RAW = 0x%08x\n",
70 REG_READ(ah, AR_MCI_INTERRUPT_RAW),
71 REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW));
78 static void ar9003_mci_remote_reset(struct ath_hw *ah, bool wait_done)
80 u32 payload[4] = { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffff00};
82 ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0, payload, 16,
87 static void ar9003_mci_send_lna_transfer(struct ath_hw *ah, bool wait_done)
89 u32 payload = 0x00000000;
91 ar9003_mci_send_message(ah, MCI_LNA_TRANS, 0, &payload, 1,
95 static void ar9003_mci_send_req_wake(struct ath_hw *ah, bool wait_done)
97 ar9003_mci_send_message(ah, MCI_REQ_WAKE, MCI_FLAG_DISABLE_TIMESTAMP,
98 NULL, 0, wait_done, false);
102 static void ar9003_mci_send_sys_waking(struct ath_hw *ah, bool wait_done)
104 ar9003_mci_send_message(ah, MCI_SYS_WAKING, MCI_FLAG_DISABLE_TIMESTAMP,
105 NULL, 0, wait_done, false);
108 static void ar9003_mci_send_lna_take(struct ath_hw *ah, bool wait_done)
110 u32 payload = 0x70000000;
112 ar9003_mci_send_message(ah, MCI_LNA_TAKE, 0, &payload, 1,
116 static void ar9003_mci_send_sys_sleeping(struct ath_hw *ah, bool wait_done)
118 ar9003_mci_send_message(ah, MCI_SYS_SLEEPING,
119 MCI_FLAG_DISABLE_TIMESTAMP,
120 NULL, 0, wait_done, false);
123 static void ar9003_mci_send_coex_version_query(struct ath_hw *ah,
126 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
127 u32 payload[4] = {0, 0, 0, 0};
129 if (mci->bt_version_known ||
130 (mci->bt_state == MCI_BT_SLEEP))
133 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
134 MCI_GPM_COEX_VERSION_QUERY);
135 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
138 static void ar9003_mci_send_coex_version_response(struct ath_hw *ah,
141 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
142 u32 payload[4] = {0, 0, 0, 0};
144 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
145 MCI_GPM_COEX_VERSION_RESPONSE);
146 *(((u8 *)payload) + MCI_GPM_COEX_B_MAJOR_VERSION) =
148 *(((u8 *)payload) + MCI_GPM_COEX_B_MINOR_VERSION) =
150 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
153 static void ar9003_mci_send_coex_wlan_channels(struct ath_hw *ah,
156 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
157 u32 *payload = &mci->wlan_channels[0];
159 if (!mci->wlan_channels_update ||
160 (mci->bt_state == MCI_BT_SLEEP))
163 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
164 MCI_GPM_COEX_WLAN_CHANNELS);
165 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
166 MCI_GPM_SET_TYPE_OPCODE(payload, 0xff, 0xff);
169 static void ar9003_mci_send_coex_bt_status_query(struct ath_hw *ah,
170 bool wait_done, u8 query_type)
172 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
173 u32 payload[4] = {0, 0, 0, 0};
176 if (mci->bt_state == MCI_BT_SLEEP)
179 query_btinfo = !!(query_type & (MCI_GPM_COEX_QUERY_BT_ALL_INFO |
180 MCI_GPM_COEX_QUERY_BT_TOPOLOGY));
181 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
182 MCI_GPM_COEX_STATUS_QUERY);
184 *(((u8 *)payload) + MCI_GPM_COEX_B_BT_BITMAP) = query_type;
187 * If bt_status_query message is not sent successfully,
188 * then need_flush_btinfo should be set again.
190 if (!ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
193 mci->need_flush_btinfo = true;
197 mci->query_bt = false;
200 static void ar9003_mci_send_coex_halt_bt_gpm(struct ath_hw *ah, bool halt,
203 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
204 u32 payload[4] = {0, 0, 0, 0};
206 MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
207 MCI_GPM_COEX_HALT_BT_GPM);
210 mci->query_bt = true;
211 /* Send next unhalt no matter halt sent or not */
212 mci->unhalt_bt_gpm = true;
213 mci->need_flush_btinfo = true;
214 *(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) =
215 MCI_GPM_COEX_BT_GPM_HALT;
217 *(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) =
218 MCI_GPM_COEX_BT_GPM_UNHALT;
220 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
223 static void ar9003_mci_prep_interface(struct ath_hw *ah)
225 struct ath_common *common = ath9k_hw_common(ah);
226 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
227 u32 saved_mci_int_en;
228 u32 mci_timeout = 150;
230 mci->bt_state = MCI_BT_SLEEP;
231 saved_mci_int_en = REG_READ(ah, AR_MCI_INTERRUPT_EN);
233 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
234 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
235 REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW));
236 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
237 REG_READ(ah, AR_MCI_INTERRUPT_RAW));
239 ar9003_mci_remote_reset(ah, true);
240 ar9003_mci_send_req_wake(ah, true);
242 if (!ar9003_mci_wait_for_interrupt(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
243 AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING, 500))
246 mci->bt_state = MCI_BT_AWAKE;
249 * we don't need to send more remote_reset at this moment.
250 * If BT receive first remote_reset, then BT HW will
251 * be cleaned up and will be able to receive req_wake
252 * and BT HW will respond sys_waking.
253 * In this case, WLAN will receive BT's HW sys_waking.
254 * Otherwise, if BT SW missed initial remote_reset,
255 * that remote_reset will still clean up BT MCI RX,
256 * and the req_wake will wake BT up,
257 * and BT SW will respond this req_wake with a remote_reset and
258 * sys_waking. In this case, WLAN will receive BT's SW
259 * sys_waking. In either case, BT's RX is cleaned up. So we
260 * don't need to reply BT's remote_reset now, if any.
261 * Similarly, if in any case, WLAN can receive BT's sys_waking,
262 * that means WLAN's RX is also fine.
264 ar9003_mci_send_sys_waking(ah, true);
268 * Set BT priority interrupt value to be 0xff to
269 * avoid having too many BT PRIORITY interrupts.
271 REG_WRITE(ah, AR_MCI_BT_PRI0, 0xFFFFFFFF);
272 REG_WRITE(ah, AR_MCI_BT_PRI1, 0xFFFFFFFF);
273 REG_WRITE(ah, AR_MCI_BT_PRI2, 0xFFFFFFFF);
274 REG_WRITE(ah, AR_MCI_BT_PRI3, 0xFFFFFFFF);
275 REG_WRITE(ah, AR_MCI_BT_PRI, 0X000000FF);
278 * A contention reset will be received after send out
279 * sys_waking. Also BT priority interrupt bits will be set.
280 * Clear those bits before the next step.
283 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
284 AR_MCI_INTERRUPT_RX_MSG_CONT_RST);
285 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW, AR_MCI_INTERRUPT_BT_PRI);
288 ar9003_mci_send_lna_transfer(ah, true);
292 if ((mci->is_2g && !mci->update_2g5g)) {
293 if (ar9003_mci_wait_for_interrupt(ah,
294 AR_MCI_INTERRUPT_RX_MSG_RAW,
295 AR_MCI_INTERRUPT_RX_MSG_LNA_INFO,
298 "MCI WLAN has control over the LNA & BT obeys it\n");
301 "MCI BT didn't respond to LNA_TRANS\n");
305 /* Clear the extra redundant SYS_WAKING from BT */
306 if ((mci->bt_state == MCI_BT_AWAKE) &&
307 (REG_READ_FIELD(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
308 AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING)) &&
309 (REG_READ_FIELD(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
310 AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) == 0)) {
311 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
312 AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING);
313 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
314 AR_MCI_INTERRUPT_REMOTE_SLEEP_UPDATE);
317 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, saved_mci_int_en);
320 void ar9003_mci_set_full_sleep(struct ath_hw *ah)
322 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
324 if (ar9003_mci_state(ah, MCI_STATE_ENABLE) &&
325 (mci->bt_state != MCI_BT_SLEEP) &&
326 !mci->halted_bt_gpm) {
327 ar9003_mci_send_coex_halt_bt_gpm(ah, true, true);
333 static void ar9003_mci_disable_interrupt(struct ath_hw *ah)
335 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
336 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN, 0);
339 static void ar9003_mci_enable_interrupt(struct ath_hw *ah)
341 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, AR_MCI_INTERRUPT_DEFAULT);
342 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_EN,
343 AR_MCI_INTERRUPT_RX_MSG_DEFAULT);
346 static bool ar9003_mci_check_int(struct ath_hw *ah, u32 ints)
350 intr = REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW);
351 return ((intr & ints) == ints);
354 void ar9003_mci_get_interrupt(struct ath_hw *ah, u32 *raw_intr,
357 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
359 *raw_intr = mci->raw_intr;
360 *rx_msg_intr = mci->rx_msg_intr;
362 /* Clean int bits after the values are read. */
364 mci->rx_msg_intr = 0;
366 EXPORT_SYMBOL(ar9003_mci_get_interrupt);
368 void ar9003_mci_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
370 struct ath_common *common = ath9k_hw_common(ah);
371 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
372 u32 raw_intr, rx_msg_intr;
374 rx_msg_intr = REG_READ(ah, AR_MCI_INTERRUPT_RX_MSG_RAW);
375 raw_intr = REG_READ(ah, AR_MCI_INTERRUPT_RAW);
377 if ((raw_intr == 0xdeadbeef) || (rx_msg_intr == 0xdeadbeef)) {
379 "MCI gets 0xdeadbeef during int processing\n");
381 mci->rx_msg_intr |= rx_msg_intr;
382 mci->raw_intr |= raw_intr;
383 *masked |= ATH9K_INT_MCI;
385 if (rx_msg_intr & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO)
386 mci->cont_status = REG_READ(ah, AR_MCI_CONT_STATUS);
388 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW, rx_msg_intr);
389 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW, raw_intr);
393 static void ar9003_mci_2g5g_changed(struct ath_hw *ah, bool is_2g)
395 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
397 if (!mci->update_2g5g &&
398 (mci->is_2g != is_2g))
399 mci->update_2g5g = true;
404 static bool ar9003_mci_is_gpm_valid(struct ath_hw *ah, u32 msg_index)
406 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
408 u32 recv_type, offset;
410 if (msg_index == MCI_GPM_INVALID)
413 offset = msg_index << 4;
415 payload = (u32 *)(mci->gpm_buf + offset);
416 recv_type = MCI_GPM_TYPE(payload);
418 if (recv_type == MCI_GPM_RSVD_PATTERN)
424 static void ar9003_mci_observation_set_up(struct ath_hw *ah)
426 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
428 if (mci->config & ATH_MCI_CONFIG_MCI_OBS_MCI) {
429 ath9k_hw_cfg_output(ah, 3, AR_GPIO_OUTPUT_MUX_AS_MCI_WLAN_DATA);
430 ath9k_hw_cfg_output(ah, 2, AR_GPIO_OUTPUT_MUX_AS_MCI_WLAN_CLK);
431 ath9k_hw_cfg_output(ah, 1, AR_GPIO_OUTPUT_MUX_AS_MCI_BT_DATA);
432 ath9k_hw_cfg_output(ah, 0, AR_GPIO_OUTPUT_MUX_AS_MCI_BT_CLK);
433 } else if (mci->config & ATH_MCI_CONFIG_MCI_OBS_TXRX) {
434 ath9k_hw_cfg_output(ah, 3, AR_GPIO_OUTPUT_MUX_AS_WL_IN_TX);
435 ath9k_hw_cfg_output(ah, 2, AR_GPIO_OUTPUT_MUX_AS_WL_IN_RX);
436 ath9k_hw_cfg_output(ah, 1, AR_GPIO_OUTPUT_MUX_AS_BT_IN_TX);
437 ath9k_hw_cfg_output(ah, 0, AR_GPIO_OUTPUT_MUX_AS_BT_IN_RX);
438 ath9k_hw_cfg_output(ah, 5, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
439 } else if (mci->config & ATH_MCI_CONFIG_MCI_OBS_BT) {
440 ath9k_hw_cfg_output(ah, 3, AR_GPIO_OUTPUT_MUX_AS_BT_IN_TX);
441 ath9k_hw_cfg_output(ah, 2, AR_GPIO_OUTPUT_MUX_AS_BT_IN_RX);
442 ath9k_hw_cfg_output(ah, 1, AR_GPIO_OUTPUT_MUX_AS_MCI_BT_DATA);
443 ath9k_hw_cfg_output(ah, 0, AR_GPIO_OUTPUT_MUX_AS_MCI_BT_CLK);
447 REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL, AR_GPIO_JTAG_DISABLE);
449 REG_RMW_FIELD(ah, AR_PHY_GLB_CONTROL, AR_GLB_DS_JTAG_DISABLE, 1);
450 REG_RMW_FIELD(ah, AR_PHY_GLB_CONTROL, AR_GLB_WLAN_UART_INTF_EN, 0);
451 REG_SET_BIT(ah, AR_GLB_GPIO_CONTROL, ATH_MCI_CONFIG_MCI_OBS_GPIO);
453 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_GPIO_OBS_SEL, 0);
454 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_MAC_BB_OBS_SEL, 1);
455 REG_WRITE(ah, AR_OBS, 0x4b);
456 REG_RMW_FIELD(ah, AR_DIAG_SW, AR_DIAG_OBS_PT_SEL1, 0x03);
457 REG_RMW_FIELD(ah, AR_DIAG_SW, AR_DIAG_OBS_PT_SEL2, 0x01);
458 REG_RMW_FIELD(ah, AR_MACMISC, AR_MACMISC_MISC_OBS_BUS_LSB, 0x02);
459 REG_RMW_FIELD(ah, AR_MACMISC, AR_MACMISC_MISC_OBS_BUS_MSB, 0x03);
460 REG_RMW_FIELD(ah, AR_PHY_TEST_CTL_STATUS,
461 AR_PHY_TEST_CTL_DEBUGPORT_SEL, 0x07);
464 static bool ar9003_mci_send_coex_bt_flags(struct ath_hw *ah, bool wait_done,
465 u8 opcode, u32 bt_flags)
467 u32 pld[4] = {0, 0, 0, 0};
469 MCI_GPM_SET_TYPE_OPCODE(pld, MCI_GPM_COEX_AGENT,
470 MCI_GPM_COEX_BT_UPDATE_FLAGS);
472 *(((u8 *)pld) + MCI_GPM_COEX_B_BT_FLAGS_OP) = opcode;
473 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 0) = bt_flags & 0xFF;
474 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 1) = (bt_flags >> 8) & 0xFF;
475 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 2) = (bt_flags >> 16) & 0xFF;
476 *(((u8 *)pld) + MCI_GPM_COEX_W_BT_FLAGS + 3) = (bt_flags >> 24) & 0xFF;
478 return ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16,
482 static void ar9003_mci_sync_bt_state(struct ath_hw *ah)
484 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
487 cur_bt_state = ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP);
489 if (mci->bt_state != cur_bt_state)
490 mci->bt_state = cur_bt_state;
492 if (mci->bt_state != MCI_BT_SLEEP) {
494 ar9003_mci_send_coex_version_query(ah, true);
495 ar9003_mci_send_coex_wlan_channels(ah, true);
497 if (mci->unhalt_bt_gpm == true)
498 ar9003_mci_send_coex_halt_bt_gpm(ah, false, true);
502 void ar9003_mci_check_bt(struct ath_hw *ah)
504 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
510 * check BT state again to make
511 * sure it's not changed.
513 ar9003_mci_sync_bt_state(ah);
514 ar9003_mci_2g5g_switch(ah, true);
516 if ((mci_hw->bt_state == MCI_BT_AWAKE) &&
517 (mci_hw->query_bt == true)) {
518 mci_hw->need_flush_btinfo = true;
522 static void ar9003_mci_process_gpm_extra(struct ath_hw *ah, u8 gpm_type,
523 u8 gpm_opcode, u32 *p_gpm)
525 struct ath_common *common = ath9k_hw_common(ah);
526 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
527 u8 *p_data = (u8 *) p_gpm;
529 if (gpm_type != MCI_GPM_COEX_AGENT)
532 switch (gpm_opcode) {
533 case MCI_GPM_COEX_VERSION_QUERY:
534 ath_dbg(common, MCI, "MCI Recv GPM COEX Version Query\n");
535 ar9003_mci_send_coex_version_response(ah, true);
537 case MCI_GPM_COEX_VERSION_RESPONSE:
538 ath_dbg(common, MCI, "MCI Recv GPM COEX Version Response\n");
540 *(p_data + MCI_GPM_COEX_B_MAJOR_VERSION);
542 *(p_data + MCI_GPM_COEX_B_MINOR_VERSION);
543 mci->bt_version_known = true;
544 ath_dbg(common, MCI, "MCI BT Coex version: %d.%d\n",
545 mci->bt_ver_major, mci->bt_ver_minor);
547 case MCI_GPM_COEX_STATUS_QUERY:
549 "MCI Recv GPM COEX Status Query = 0x%02X\n",
550 *(p_data + MCI_GPM_COEX_B_WLAN_BITMAP));
551 mci->wlan_channels_update = true;
552 ar9003_mci_send_coex_wlan_channels(ah, true);
554 case MCI_GPM_COEX_BT_PROFILE_INFO:
555 mci->query_bt = true;
556 ath_dbg(common, MCI, "MCI Recv GPM COEX BT_Profile_Info\n");
558 case MCI_GPM_COEX_BT_STATUS_UPDATE:
559 mci->query_bt = true;
561 "MCI Recv GPM COEX BT_Status_Update SEQ=%d (drop&query)\n",
569 static u32 ar9003_mci_wait_for_gpm(struct ath_hw *ah, u8 gpm_type,
570 u8 gpm_opcode, int time_out)
572 struct ath_common *common = ath9k_hw_common(ah);
573 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
574 u32 *p_gpm = NULL, mismatch = 0, more_data;
576 u8 recv_type = 0, recv_opcode = 0;
577 bool b_is_bt_cal_done = (gpm_type == MCI_GPM_BT_CAL_DONE);
579 more_data = time_out ? MCI_GPM_NOMORE : MCI_GPM_MORE;
581 while (time_out > 0) {
583 MCI_GPM_RECYCLE(p_gpm);
587 if (more_data != MCI_GPM_MORE)
588 time_out = ar9003_mci_wait_for_interrupt(ah,
589 AR_MCI_INTERRUPT_RX_MSG_RAW,
590 AR_MCI_INTERRUPT_RX_MSG_GPM,
596 offset = ar9003_mci_get_next_gpm_offset(ah, false, &more_data);
598 if (offset == MCI_GPM_INVALID)
601 p_gpm = (u32 *) (mci->gpm_buf + offset);
602 recv_type = MCI_GPM_TYPE(p_gpm);
603 recv_opcode = MCI_GPM_OPCODE(p_gpm);
605 if (MCI_GPM_IS_CAL_TYPE(recv_type)) {
606 if (recv_type == gpm_type) {
607 if ((gpm_type == MCI_GPM_BT_CAL_DONE) &&
609 gpm_type = MCI_GPM_BT_CAL_GRANT;
614 } else if ((recv_type == gpm_type) &&
615 (recv_opcode == gpm_opcode))
619 * check if it's cal_grant
621 * When we're waiting for cal_grant in reset routine,
622 * it's possible that BT sends out cal_request at the
623 * same time. Since BT's calibration doesn't happen
624 * that often, we'll let BT completes calibration then
625 * we continue to wait for cal_grant from BT.
626 * Orginal: Wait BT_CAL_GRANT.
627 * New: Receive BT_CAL_REQ -> send WLAN_CAL_GRANT->wait
628 * BT_CAL_DONE -> Wait BT_CAL_GRANT.
631 if ((gpm_type == MCI_GPM_BT_CAL_GRANT) &&
632 (recv_type == MCI_GPM_BT_CAL_REQ)) {
634 u32 payload[4] = {0, 0, 0, 0};
636 gpm_type = MCI_GPM_BT_CAL_DONE;
637 MCI_GPM_SET_CAL_TYPE(payload,
638 MCI_GPM_WLAN_CAL_GRANT);
639 ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
643 ath_dbg(common, MCI, "MCI GPM subtype not match 0x%x\n",
646 ar9003_mci_process_gpm_extra(ah, recv_type,
652 MCI_GPM_RECYCLE(p_gpm);
659 while (more_data == MCI_GPM_MORE) {
660 offset = ar9003_mci_get_next_gpm_offset(ah, false, &more_data);
661 if (offset == MCI_GPM_INVALID)
664 p_gpm = (u32 *) (mci->gpm_buf + offset);
665 recv_type = MCI_GPM_TYPE(p_gpm);
666 recv_opcode = MCI_GPM_OPCODE(p_gpm);
668 if (!MCI_GPM_IS_CAL_TYPE(recv_type))
669 ar9003_mci_process_gpm_extra(ah, recv_type,
672 MCI_GPM_RECYCLE(p_gpm);
678 bool ar9003_mci_start_reset(struct ath_hw *ah, struct ath9k_channel *chan)
680 struct ath_common *common = ath9k_hw_common(ah);
681 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
682 u32 payload[4] = {0, 0, 0, 0};
684 ar9003_mci_2g5g_changed(ah, IS_CHAN_2GHZ(chan));
686 if (mci_hw->bt_state != MCI_BT_CAL_START)
689 mci_hw->bt_state = MCI_BT_CAL;
692 * MCI FIX: disable mci interrupt here. This is to avoid
693 * SW_MSG_DONE or RX_MSG bits to trigger MCI_INT and
694 * lead to mci_intr reentry.
696 ar9003_mci_disable_interrupt(ah);
698 MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_GRANT);
699 ar9003_mci_send_message(ah, MCI_GPM, 0, payload,
702 /* Wait BT calibration to be completed for 25ms */
704 if (ar9003_mci_wait_for_gpm(ah, MCI_GPM_BT_CAL_DONE,
706 ath_dbg(common, MCI, "MCI BT_CAL_DONE received\n");
709 "MCI BT_CAL_DONE not received\n");
711 mci_hw->bt_state = MCI_BT_AWAKE;
712 /* MCI FIX: enable mci interrupt here */
713 ar9003_mci_enable_interrupt(ah);
718 int ar9003_mci_end_reset(struct ath_hw *ah, struct ath9k_channel *chan,
719 struct ath9k_hw_cal_data *caldata)
721 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
726 if (!IS_CHAN_2GHZ(chan) || (mci_hw->bt_state != MCI_BT_SLEEP))
729 if (!ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET) &&
730 !ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE))
734 * BT is sleeping. Check if BT wakes up during
735 * WLAN calibration. If BT wakes up during
736 * WLAN calibration, need to go through all
737 * message exchanges again and recal.
739 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
740 (AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET |
741 AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE));
743 ar9003_mci_remote_reset(ah, true);
744 ar9003_mci_send_sys_waking(ah, true);
747 if (IS_CHAN_2GHZ(chan))
748 ar9003_mci_send_lna_transfer(ah, true);
750 mci_hw->bt_state = MCI_BT_AWAKE;
753 caldata->done_txiqcal_once = false;
754 caldata->done_txclcal_once = false;
755 caldata->rtt_done = false;
758 if (!ath9k_hw_init_cal(ah, chan))
762 ar9003_mci_enable_interrupt(ah);
766 static void ar9003_mci_mute_bt(struct ath_hw *ah)
768 /* disable all MCI messages */
769 REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE, 0xffff0000);
770 REG_SET_BIT(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
772 /* wait pending HW messages to flush out */
776 * Send LNA_TAKE and SYS_SLEEPING when
777 * 1. reset not after resuming from full sleep
778 * 2. before reset MCI RX, to quiet BT and avoid MCI RX misalignment
780 ar9003_mci_send_lna_take(ah, true);
784 ar9003_mci_send_sys_sleeping(ah, true);
787 static void ar9003_mci_osla_setup(struct ath_hw *ah, bool enable)
789 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
793 REG_CLR_BIT(ah, AR_BTCOEX_CTRL,
794 AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
797 REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2, AR_MCI_SCHD_TABLE_2_HW_BASED, 1);
798 REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2,
799 AR_MCI_SCHD_TABLE_2_MEM_BASED, 1);
801 if (!(mci->config & ATH_MCI_CONFIG_DISABLE_AGGR_THRESH)) {
802 thresh = MS(mci->config, ATH_MCI_CONFIG_AGGR_THRESH);
803 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
804 AR_BTCOEX_CTRL_AGGR_THRESH, thresh);
805 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
806 AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 1);
808 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
809 AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 0);
811 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
812 AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN, 1);
815 void ar9003_mci_reset(struct ath_hw *ah, bool en_int, bool is_2g,
818 struct ath_common *common = ath9k_hw_common(ah);
819 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
822 ath_dbg(common, MCI, "MCI Reset (full_sleep = %d, is_2g = %d)\n",
823 is_full_sleep, is_2g);
825 if (!mci->gpm_addr && !mci->sched_addr) {
827 "MCI GPM and schedule buffers are not allocated\n");
831 if (REG_READ(ah, AR_BTCOEX_CTRL) == 0xdeadbeef) {
832 ath_dbg(common, MCI, "BTCOEX control register is dead\n");
836 /* Program MCI DMA related registers */
837 REG_WRITE(ah, AR_MCI_GPM_0, mci->gpm_addr);
838 REG_WRITE(ah, AR_MCI_GPM_1, mci->gpm_len);
839 REG_WRITE(ah, AR_MCI_SCHD_TABLE_0, mci->sched_addr);
842 * To avoid MCI state machine be affected by incoming remote MCI msgs,
843 * MCI mode will be enabled later, right before reset the MCI TX and RX.
846 regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
847 SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
848 SM(1, AR_BTCOEX_CTRL_PA_SHARED) |
849 SM(1, AR_BTCOEX_CTRL_LNA_SHARED) |
850 SM(2, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
851 SM(3, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
852 SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
853 SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
854 SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
856 REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
858 if (is_2g && !(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
859 ar9003_mci_osla_setup(ah, true);
861 ar9003_mci_osla_setup(ah, false);
863 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
864 AR_BTCOEX_CTRL_SPDT_ENABLE);
865 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL3,
866 AR_BTCOEX_CTRL3_CONT_INFO_TIMEOUT, 20);
868 REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2, AR_BTCOEX_CTRL2_RX_DEWEIGHT, 1);
869 REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0);
871 regval = MS(mci->config, ATH_MCI_CONFIG_CLK_DIV);
872 REG_RMW_FIELD(ah, AR_MCI_TX_CTRL, AR_MCI_TX_CTRL_CLK_DIV, regval);
873 REG_SET_BIT(ah, AR_BTCOEX_CTRL, AR_BTCOEX_CTRL_MCI_MODE_EN);
875 /* Resetting the Rx and Tx paths of MCI */
876 regval = REG_READ(ah, AR_MCI_COMMAND2);
877 regval |= SM(1, AR_MCI_COMMAND2_RESET_TX);
878 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
882 regval &= ~SM(1, AR_MCI_COMMAND2_RESET_TX);
883 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
886 ar9003_mci_mute_bt(ah);
890 /* Check pending GPM msg before MCI Reset Rx */
891 ar9003_mci_check_gpm_offset(ah);
893 regval |= SM(1, AR_MCI_COMMAND2_RESET_RX);
894 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
896 regval &= ~SM(1, AR_MCI_COMMAND2_RESET_RX);
897 REG_WRITE(ah, AR_MCI_COMMAND2, regval);
899 ar9003_mci_get_next_gpm_offset(ah, true, NULL);
901 REG_WRITE(ah, AR_MCI_MSG_ATTRIBUTES_TABLE,
902 (SM(0xe801, AR_MCI_MSG_ATTRIBUTES_TABLE_INVALID_HDR) |
903 SM(0x0000, AR_MCI_MSG_ATTRIBUTES_TABLE_CHECKSUM)));
905 REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
906 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
908 ar9003_mci_observation_set_up(ah);
911 ar9003_mci_prep_interface(ah);
914 ar9003_mci_enable_interrupt(ah);
917 void ar9003_mci_stop_bt(struct ath_hw *ah, bool save_fullsleep)
919 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
921 ar9003_mci_disable_interrupt(ah);
923 if (mci_hw->ready && !save_fullsleep) {
924 ar9003_mci_mute_bt(ah);
926 REG_WRITE(ah, AR_BTCOEX_CTRL, 0);
929 mci_hw->bt_state = MCI_BT_SLEEP;
930 mci_hw->ready = false;
933 static void ar9003_mci_send_2g5g_status(struct ath_hw *ah, bool wait_done)
935 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
936 u32 new_flags, to_set, to_clear;
938 if (!mci->update_2g5g || (mci->bt_state == MCI_BT_SLEEP))
942 new_flags = MCI_2G_FLAGS;
943 to_clear = MCI_2G_FLAGS_CLEAR_MASK;
944 to_set = MCI_2G_FLAGS_SET_MASK;
946 new_flags = MCI_5G_FLAGS;
947 to_clear = MCI_5G_FLAGS_CLEAR_MASK;
948 to_set = MCI_5G_FLAGS_SET_MASK;
952 ar9003_mci_send_coex_bt_flags(ah, wait_done,
953 MCI_GPM_COEX_BT_FLAGS_CLEAR,
956 ar9003_mci_send_coex_bt_flags(ah, wait_done,
957 MCI_GPM_COEX_BT_FLAGS_SET,
961 static void ar9003_mci_queue_unsent_gpm(struct ath_hw *ah, u8 header,
962 u32 *payload, bool queue)
964 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
967 /* check if the message is to be queued */
968 if (header != MCI_GPM)
971 type = MCI_GPM_TYPE(payload);
972 opcode = MCI_GPM_OPCODE(payload);
974 if (type != MCI_GPM_COEX_AGENT)
978 case MCI_GPM_COEX_BT_UPDATE_FLAGS:
979 if (*(((u8 *)payload) + MCI_GPM_COEX_B_BT_FLAGS_OP) ==
980 MCI_GPM_COEX_BT_FLAGS_READ)
983 mci->update_2g5g = queue;
986 case MCI_GPM_COEX_WLAN_CHANNELS:
987 mci->wlan_channels_update = queue;
989 case MCI_GPM_COEX_HALT_BT_GPM:
990 if (*(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) ==
991 MCI_GPM_COEX_BT_GPM_UNHALT) {
992 mci->unhalt_bt_gpm = queue;
995 mci->halted_bt_gpm = false;
998 if (*(((u8 *)payload) + MCI_GPM_COEX_B_HALT_STATE) ==
999 MCI_GPM_COEX_BT_GPM_HALT) {
1001 mci->halted_bt_gpm = !queue;
1010 void ar9003_mci_2g5g_switch(struct ath_hw *ah, bool force)
1012 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1014 if (!mci->update_2g5g && !force)
1018 ar9003_mci_send_2g5g_status(ah, true);
1019 ar9003_mci_send_lna_transfer(ah, true);
1022 REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
1023 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1024 REG_CLR_BIT(ah, AR_PHY_GLB_CONTROL,
1025 AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1027 if (!(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
1028 ar9003_mci_osla_setup(ah, true);
1030 ar9003_mci_send_lna_take(ah, true);
1033 REG_SET_BIT(ah, AR_MCI_TX_CTRL,
1034 AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
1035 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
1036 AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1038 ar9003_mci_osla_setup(ah, false);
1039 ar9003_mci_send_2g5g_status(ah, true);
1043 bool ar9003_mci_send_message(struct ath_hw *ah, u8 header, u32 flag,
1044 u32 *payload, u8 len, bool wait_done,
1047 struct ath_common *common = ath9k_hw_common(ah);
1048 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1049 bool msg_sent = false;
1051 u32 saved_mci_int_en;
1054 saved_mci_int_en = REG_READ(ah, AR_MCI_INTERRUPT_EN);
1055 regval = REG_READ(ah, AR_BTCOEX_CTRL);
1057 if ((regval == 0xdeadbeef) || !(regval & AR_BTCOEX_CTRL_MCI_MODE_EN)) {
1058 ath_dbg(common, MCI,
1059 "MCI Not sending 0x%x. MCI is not enabled. full_sleep = %d\n",
1060 header, (ah->power_mode == ATH9K_PM_FULL_SLEEP) ? 1 : 0);
1061 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1063 } else if (check_bt && (mci->bt_state == MCI_BT_SLEEP)) {
1064 ath_dbg(common, MCI,
1065 "MCI Don't send message 0x%x. BT is in sleep state\n",
1067 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1072 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, 0);
1074 /* Need to clear SW_MSG_DONE raw bit before wait */
1076 REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
1077 (AR_MCI_INTERRUPT_SW_MSG_DONE |
1078 AR_MCI_INTERRUPT_MSG_FAIL_MASK));
1081 for (i = 0; (i * 4) < len; i++)
1082 REG_WRITE(ah, (AR_MCI_TX_PAYLOAD0 + i * 4),
1086 REG_WRITE(ah, AR_MCI_COMMAND0,
1087 (SM((flag & MCI_FLAG_DISABLE_TIMESTAMP),
1088 AR_MCI_COMMAND0_DISABLE_TIMESTAMP) |
1089 SM(len, AR_MCI_COMMAND0_LEN) |
1090 SM(header, AR_MCI_COMMAND0_HEADER)));
1093 !(ar9003_mci_wait_for_interrupt(ah, AR_MCI_INTERRUPT_RAW,
1094 AR_MCI_INTERRUPT_SW_MSG_DONE, 500)))
1095 ar9003_mci_queue_unsent_gpm(ah, header, payload, true);
1097 ar9003_mci_queue_unsent_gpm(ah, header, payload, false);
1102 REG_WRITE(ah, AR_MCI_INTERRUPT_EN, saved_mci_int_en);
1106 EXPORT_SYMBOL(ar9003_mci_send_message);
1108 void ar9003_mci_init_cal_req(struct ath_hw *ah, bool *is_reusable)
1110 struct ath_common *common = ath9k_hw_common(ah);
1111 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
1112 u32 pld[4] = {0, 0, 0, 0};
1114 if ((mci_hw->bt_state != MCI_BT_AWAKE) ||
1115 (mci_hw->config & ATH_MCI_CONFIG_DISABLE_MCI_CAL))
1118 MCI_GPM_SET_CAL_TYPE(pld, MCI_GPM_WLAN_CAL_REQ);
1119 pld[MCI_GPM_WLAN_CAL_W_SEQUENCE] = mci_hw->wlan_cal_seq++;
1121 ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16, true, false);
1123 if (ar9003_mci_wait_for_gpm(ah, MCI_GPM_BT_CAL_GRANT, 0, 50000)) {
1124 ath_dbg(common, MCI, "MCI BT_CAL_GRANT received\n");
1126 *is_reusable = false;
1127 ath_dbg(common, MCI, "MCI BT_CAL_GRANT not received\n");
1131 void ar9003_mci_init_cal_done(struct ath_hw *ah)
1133 struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
1134 u32 pld[4] = {0, 0, 0, 0};
1136 if ((mci_hw->bt_state != MCI_BT_AWAKE) ||
1137 (mci_hw->config & ATH_MCI_CONFIG_DISABLE_MCI_CAL))
1140 MCI_GPM_SET_CAL_TYPE(pld, MCI_GPM_WLAN_CAL_DONE);
1141 pld[MCI_GPM_WLAN_CAL_W_SEQUENCE] = mci_hw->wlan_cal_done++;
1142 ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16, true, false);
1145 void ar9003_mci_setup(struct ath_hw *ah, u32 gpm_addr, void *gpm_buf,
1146 u16 len, u32 sched_addr)
1148 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1150 mci->gpm_addr = gpm_addr;
1151 mci->gpm_buf = gpm_buf;
1153 mci->sched_addr = sched_addr;
1155 ar9003_mci_reset(ah, true, true, true);
1157 EXPORT_SYMBOL(ar9003_mci_setup);
1159 void ar9003_mci_cleanup(struct ath_hw *ah)
1161 /* Turn off MCI and Jupiter mode. */
1162 REG_WRITE(ah, AR_BTCOEX_CTRL, 0x00);
1163 ar9003_mci_disable_interrupt(ah);
1165 EXPORT_SYMBOL(ar9003_mci_cleanup);
1167 u32 ar9003_mci_state(struct ath_hw *ah, u32 state_type)
1169 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1173 switch (state_type) {
1174 case MCI_STATE_ENABLE:
1176 value = REG_READ(ah, AR_BTCOEX_CTRL);
1178 if ((value == 0xdeadbeef) || (value == 0xffffffff))
1181 value &= AR_BTCOEX_CTRL_MCI_MODE_EN;
1183 case MCI_STATE_LAST_SCHD_MSG_OFFSET:
1184 value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
1185 AR_MCI_RX_LAST_SCHD_MSG_INDEX);
1186 /* Make it in bytes */
1189 case MCI_STATE_REMOTE_SLEEP:
1190 value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
1191 AR_MCI_RX_REMOTE_SLEEP) ?
1192 MCI_BT_SLEEP : MCI_BT_AWAKE;
1194 case MCI_STATE_SET_BT_AWAKE:
1195 mci->bt_state = MCI_BT_AWAKE;
1196 ar9003_mci_send_coex_version_query(ah, true);
1197 ar9003_mci_send_coex_wlan_channels(ah, true);
1199 if (mci->unhalt_bt_gpm)
1200 ar9003_mci_send_coex_halt_bt_gpm(ah, false, true);
1202 ar9003_mci_2g5g_switch(ah, false);
1204 case MCI_STATE_RESET_REQ_WAKE:
1205 ar9003_mci_reset_req_wakeup(ah);
1206 mci->update_2g5g = true;
1208 if (mci->config & ATH_MCI_CONFIG_MCI_OBS_MASK) {
1209 /* Check if we still have control of the GPIOs */
1210 if ((REG_READ(ah, AR_GLB_GPIO_CONTROL) &
1211 ATH_MCI_CONFIG_MCI_OBS_GPIO) !=
1212 ATH_MCI_CONFIG_MCI_OBS_GPIO) {
1213 ar9003_mci_observation_set_up(ah);
1217 case MCI_STATE_SEND_WLAN_COEX_VERSION:
1218 ar9003_mci_send_coex_version_response(ah, true);
1220 case MCI_STATE_SEND_VERSION_QUERY:
1221 ar9003_mci_send_coex_version_query(ah, true);
1223 case MCI_STATE_SEND_STATUS_QUERY:
1224 query_type = MCI_GPM_COEX_QUERY_BT_TOPOLOGY;
1225 ar9003_mci_send_coex_bt_status_query(ah, true, query_type);
1227 case MCI_STATE_RECOVER_RX:
1228 ar9003_mci_prep_interface(ah);
1229 mci->query_bt = true;
1230 mci->need_flush_btinfo = true;
1231 ar9003_mci_send_coex_wlan_channels(ah, true);
1232 ar9003_mci_2g5g_switch(ah, false);
1234 case MCI_STATE_NEED_FTP_STOMP:
1235 value = !(mci->config & ATH_MCI_CONFIG_DISABLE_FTP_STOMP);
1243 EXPORT_SYMBOL(ar9003_mci_state);
1245 void ar9003_mci_bt_gain_ctrl(struct ath_hw *ah)
1247 struct ath_common *common = ath9k_hw_common(ah);
1248 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1250 ath_dbg(common, MCI, "Give LNA and SPDT control to BT\n");
1252 ar9003_mci_send_lna_take(ah, true);
1255 REG_SET_BIT(ah, AR_PHY_GLB_CONTROL, AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
1257 mci->update_2g5g = true;
1258 ar9003_mci_send_2g5g_status(ah, true);
1260 /* Force another 2g5g update at next scanning */
1261 mci->update_2g5g = true;
1264 void ar9003_mci_set_power_awake(struct ath_hw *ah)
1266 u32 btcoex_ctrl2, diag_sw;
1268 u8 lna_ctrl, bt_sleep;
1270 for (i = 0; i < AH_WAIT_TIMEOUT; i++) {
1271 btcoex_ctrl2 = REG_READ(ah, AR_BTCOEX_CTRL2);
1272 if (btcoex_ctrl2 != 0xdeadbeef)
1274 udelay(AH_TIME_QUANTUM);
1276 REG_WRITE(ah, AR_BTCOEX_CTRL2, (btcoex_ctrl2 | BIT(23)));
1278 for (i = 0; i < AH_WAIT_TIMEOUT; i++) {
1279 diag_sw = REG_READ(ah, AR_DIAG_SW);
1280 if (diag_sw != 0xdeadbeef)
1282 udelay(AH_TIME_QUANTUM);
1284 REG_WRITE(ah, AR_DIAG_SW, (diag_sw | BIT(27) | BIT(19) | BIT(18)));
1285 lna_ctrl = REG_READ(ah, AR_OBS_BUS_CTRL) & 0x3;
1286 bt_sleep = REG_READ(ah, AR_MCI_RX_STATUS) & AR_MCI_RX_REMOTE_SLEEP;
1288 REG_WRITE(ah, AR_BTCOEX_CTRL2, btcoex_ctrl2);
1289 REG_WRITE(ah, AR_DIAG_SW, diag_sw);
1291 if (bt_sleep && (lna_ctrl == 2)) {
1292 REG_SET_BIT(ah, AR_BTCOEX_RC, 0x1);
1293 REG_CLR_BIT(ah, AR_BTCOEX_RC, 0x1);
1298 void ar9003_mci_check_gpm_offset(struct ath_hw *ah)
1300 struct ath_common *common = ath9k_hw_common(ah);
1301 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1305 * This should only be called before "MAC Warm Reset" or "MCI Reset Rx".
1307 offset = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1308 if (mci->gpm_idx == offset)
1310 ath_dbg(common, MCI, "GPM cached write pointer mismatch %d %d\n",
1311 mci->gpm_idx, offset);
1312 mci->query_bt = true;
1313 mci->need_flush_btinfo = true;
1317 u32 ar9003_mci_get_next_gpm_offset(struct ath_hw *ah, bool first, u32 *more)
1319 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1320 u32 offset, more_gpm = 0, gpm_ptr;
1323 gpm_ptr = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1325 if (gpm_ptr >= mci->gpm_len)
1328 mci->gpm_idx = gpm_ptr;
1333 * This could be useful to avoid new GPM message interrupt which
1334 * may lead to spurious interrupt after power sleep, or multiple
1335 * entry of ath_mci_intr().
1336 * Adding empty GPM check by returning HAL_MCI_GPM_INVALID can
1337 * alleviate this effect, but clearing GPM RX interrupt bit is
1338 * safe, because whether this is called from hw or driver code
1339 * there must be an interrupt bit set/triggered initially
1341 REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
1342 AR_MCI_INTERRUPT_RX_MSG_GPM);
1344 gpm_ptr = MS(REG_READ(ah, AR_MCI_GPM_1), AR_MCI_GPM_WRITE_PTR);
1348 offset = mci->gpm_len - 1;
1349 else if (offset >= mci->gpm_len) {
1350 if (offset != 0xFFFF)
1356 if ((offset == 0xFFFF) || (gpm_ptr == mci->gpm_idx)) {
1357 offset = MCI_GPM_INVALID;
1358 more_gpm = MCI_GPM_NOMORE;
1364 /* skip reserved GPM if any */
1366 if (offset != mci->gpm_idx)
1367 more_gpm = MCI_GPM_MORE;
1369 more_gpm = MCI_GPM_NOMORE;
1371 temp_index = mci->gpm_idx;
1373 if (temp_index >= mci->gpm_len)
1378 if (mci->gpm_idx >= mci->gpm_len)
1381 if (ar9003_mci_is_gpm_valid(ah, temp_index)) {
1382 offset = temp_index;
1386 if (more_gpm == MCI_GPM_NOMORE) {
1387 offset = MCI_GPM_INVALID;
1392 if (offset != MCI_GPM_INVALID)
1400 EXPORT_SYMBOL(ar9003_mci_get_next_gpm_offset);
1402 void ar9003_mci_set_bt_version(struct ath_hw *ah, u8 major, u8 minor)
1404 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1406 mci->bt_ver_major = major;
1407 mci->bt_ver_minor = minor;
1408 mci->bt_version_known = true;
1409 ath_dbg(ath9k_hw_common(ah), MCI, "MCI BT version set: %d.%d\n",
1410 mci->bt_ver_major, mci->bt_ver_minor);
1412 EXPORT_SYMBOL(ar9003_mci_set_bt_version);
1414 void ar9003_mci_send_wlan_channels(struct ath_hw *ah)
1416 struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
1418 mci->wlan_channels_update = true;
1419 ar9003_mci_send_coex_wlan_channels(ah, true);
1421 EXPORT_SYMBOL(ar9003_mci_send_wlan_channels);