--- /dev/null
+/*
+ * Copyright (c) 2010-2011 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+
+#include "ath9k.h"
+#include "mci.h"
+
+static const u8 ath_mci_duty_cycle[] = { 55, 50, 60, 70, 80, 85, 90, 95, 98 };
+
+static struct ath_mci_profile_info*
+ath_mci_find_profile(struct ath_mci_profile *mci,
+ struct ath_mci_profile_info *info)
+{
+ struct ath_mci_profile_info *entry;
+
+ if (list_empty(&mci->info))
+ return NULL;
+
+ list_for_each_entry(entry, &mci->info, list) {
+ if (entry->conn_handle == info->conn_handle)
+ return entry;
+ }
+ return NULL;
+}
+
+static bool ath_mci_add_profile(struct ath_common *common,
+ struct ath_mci_profile *mci,
+ struct ath_mci_profile_info *info)
+{
+ struct ath_mci_profile_info *entry;
+ u8 voice_priority[] = { 110, 110, 110, 112, 110, 110, 114, 116, 118 };
+
+ if ((mci->num_sco == ATH_MCI_MAX_SCO_PROFILE) &&
+ (info->type == MCI_GPM_COEX_PROFILE_VOICE))
+ return false;
+
+ if (((NUM_PROF(mci) - mci->num_sco) == ATH_MCI_MAX_ACL_PROFILE) &&
+ (info->type != MCI_GPM_COEX_PROFILE_VOICE))
+ return false;
+
+ entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
+ if (!entry)
+ return false;
+
+ memcpy(entry, info, 10);
+ INC_PROF(mci, info);
+ list_add_tail(&entry->list, &mci->info);
+ if (info->type == MCI_GPM_COEX_PROFILE_VOICE) {
+ if (info->voice_type < sizeof(voice_priority))
+ mci->voice_priority = voice_priority[info->voice_type];
+ else
+ mci->voice_priority = 110;
+ }
+
+ return true;
+}
+
+static void ath_mci_del_profile(struct ath_common *common,
+ struct ath_mci_profile *mci,
+ struct ath_mci_profile_info *entry)
+{
+ if (!entry)
+ return;
+
+ DEC_PROF(mci, entry);
+ list_del(&entry->list);
+ kfree(entry);
+}
+
+void ath_mci_flush_profile(struct ath_mci_profile *mci)
+{
+ struct ath_mci_profile_info *info, *tinfo;
+
+ mci->aggr_limit = 0;
+ mci->num_mgmt = 0;
+
+ if (list_empty(&mci->info))
+ return;
+
+ list_for_each_entry_safe(info, tinfo, &mci->info, list) {
+ list_del(&info->list);
+ DEC_PROF(mci, info);
+ kfree(info);
+ }
+}
+
+static void ath_mci_adjust_aggr_limit(struct ath_btcoex *btcoex)
+{
+ struct ath_mci_profile *mci = &btcoex->mci;
+ u32 wlan_airtime = btcoex->btcoex_period *
+ (100 - btcoex->duty_cycle) / 100;
+
+ /*
+ * Scale: wlan_airtime is in ms, aggr_limit is in 0.25 ms.
+ * When wlan_airtime is less than 4ms, aggregation limit has to be
+ * adjusted half of wlan_airtime to ensure that the aggregation can fit
+ * without collision with BT traffic.
+ */
+ if ((wlan_airtime <= 4) &&
+ (!mci->aggr_limit || (mci->aggr_limit > (2 * wlan_airtime))))
+ mci->aggr_limit = 2 * wlan_airtime;
+}
+
+static void ath_mci_update_scheme(struct ath_softc *sc)
+{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_btcoex *btcoex = &sc->btcoex;
+ struct ath_mci_profile *mci = &btcoex->mci;
+ struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;
+ struct ath_mci_profile_info *info;
+ u32 num_profile = NUM_PROF(mci);
+
+ if (mci_hw->config & ATH_MCI_CONFIG_DISABLE_TUNING)
+ goto skip_tuning;
+
+ mci->aggr_limit = 0;
+ btcoex->duty_cycle = ath_mci_duty_cycle[num_profile];
+ btcoex->btcoex_period = ATH_MCI_DEF_BT_PERIOD;
+ if (NUM_PROF(mci))
+ btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
+ else
+ btcoex->bt_stomp_type = mci->num_mgmt ? ATH_BTCOEX_STOMP_ALL :
+ ATH_BTCOEX_STOMP_LOW;
+
+ if (num_profile == 1) {
+ info = list_first_entry(&mci->info,
+ struct ath_mci_profile_info,
+ list);
+ if (mci->num_sco) {
+ if (info->T == 12)
+ mci->aggr_limit = 8;
+ else if (info->T == 6) {
+ mci->aggr_limit = 6;
+ btcoex->duty_cycle = 30;
+ } else
+ mci->aggr_limit = 6;
+ ath_dbg(common, MCI,
+ "Single SCO, aggregation limit %d 1/4 ms\n",
+ mci->aggr_limit);
+ } else if (mci->num_pan || mci->num_other_acl) {
+ /*
+ * For single PAN/FTP profile, allocate 35% for BT
+ * to improve WLAN throughput.
+ */
+ btcoex->duty_cycle = AR_SREV_9565(sc->sc_ah) ? 40 : 35;
+ btcoex->btcoex_period = 53;
+ ath_dbg(common, MCI,
+ "Single PAN/FTP bt period %d ms dutycycle %d\n",
+ btcoex->duty_cycle, btcoex->btcoex_period);
+ } else if (mci->num_hid) {
+ btcoex->duty_cycle = 30;
+ mci->aggr_limit = 6;
+ ath_dbg(common, MCI,
+ "Multiple attempt/timeout single HID "
+ "aggregation limit 1.5 ms dutycycle 30%%\n");
+ }
+ } else if (num_profile == 2) {
+ if (mci->num_hid == 2)
+ btcoex->duty_cycle = 30;
+ mci->aggr_limit = 6;
+ ath_dbg(common, MCI,
+ "Two BT profiles aggr limit 1.5 ms dutycycle %d%%\n",
+ btcoex->duty_cycle);
+ } else if (num_profile >= 3) {
+ mci->aggr_limit = 4;
+ ath_dbg(common, MCI,
+ "Three or more profiles aggregation limit 1 ms\n");
+ }
+
+skip_tuning:
+ if (IS_CHAN_2GHZ(sc->sc_ah->curchan)) {
+ if (IS_CHAN_HT(sc->sc_ah->curchan))
+ ath_mci_adjust_aggr_limit(btcoex);
+ else
+ btcoex->btcoex_period >>= 1;
+ }
+
+ ath9k_btcoex_timer_pause(sc);
+ ath9k_hw_btcoex_disable(sc->sc_ah);
+
+ if (IS_CHAN_5GHZ(sc->sc_ah->curchan))
+ return;
+
+ btcoex->duty_cycle += (mci->num_bdr ? ATH_MCI_BDR_DUTY_CYCLE : 0);
+ if (btcoex->duty_cycle > ATH_MCI_MAX_DUTY_CYCLE)
+ btcoex->duty_cycle = ATH_MCI_MAX_DUTY_CYCLE;
+
+ btcoex->btcoex_no_stomp = btcoex->btcoex_period *
+ (100 - btcoex->duty_cycle) / 100;
+
+ ath9k_hw_btcoex_enable(sc->sc_ah);
+ ath9k_btcoex_timer_resume(sc);
+}
+
+static void ath_mci_cal_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
+ u32 payload[4] = {0, 0, 0, 0};
+
+ switch (opcode) {
+ case MCI_GPM_BT_CAL_REQ:
+ if (mci_hw->bt_state == MCI_BT_AWAKE) {
+ mci_hw->bt_state = MCI_BT_CAL_START;
+ ath9k_queue_reset(sc, RESET_TYPE_MCI);
+ }
+ ath_dbg(common, MCI, "MCI State : %d\n", mci_hw->bt_state);
+ break;
+ case MCI_GPM_BT_CAL_GRANT:
+ MCI_GPM_SET_CAL_TYPE(payload, MCI_GPM_WLAN_CAL_DONE);
+ ar9003_mci_send_message(sc->sc_ah, MCI_GPM, 0, payload,
+ 16, false, true);
+ break;
+ default:
+ ath_dbg(common, MCI, "Unknown GPM CAL message\n");
+ break;
+ }
+}
+
+static void ath9k_mci_work(struct work_struct *work)
+{
+ struct ath_softc *sc = container_of(work, struct ath_softc, mci_work);
+
+ ath_mci_update_scheme(sc);
+}
+
+static void ath_mci_update_stomp_txprio(u8 cur_txprio, u8 *stomp_prio)
+{
+ if (cur_txprio < stomp_prio[ATH_BTCOEX_STOMP_NONE])
+ stomp_prio[ATH_BTCOEX_STOMP_NONE] = cur_txprio;
+
+ if (cur_txprio > stomp_prio[ATH_BTCOEX_STOMP_ALL])
+ stomp_prio[ATH_BTCOEX_STOMP_ALL] = cur_txprio;
+
+ if ((cur_txprio > ATH_MCI_HI_PRIO) &&
+ (cur_txprio < stomp_prio[ATH_BTCOEX_STOMP_LOW]))
+ stomp_prio[ATH_BTCOEX_STOMP_LOW] = cur_txprio;
+}
+
+static void ath_mci_set_concur_txprio(struct ath_softc *sc)
+{
+ struct ath_btcoex *btcoex = &sc->btcoex;
+ struct ath_mci_profile *mci = &btcoex->mci;
+ u8 stomp_txprio[ATH_BTCOEX_STOMP_MAX];
+
+ memset(stomp_txprio, 0, sizeof(stomp_txprio));
+ if (mci->num_mgmt) {
+ stomp_txprio[ATH_BTCOEX_STOMP_ALL] = ATH_MCI_INQUIRY_PRIO;
+ if (!mci->num_pan && !mci->num_other_acl)
+ stomp_txprio[ATH_BTCOEX_STOMP_NONE] =
+ ATH_MCI_INQUIRY_PRIO;
+ } else {
+ u8 prof_prio[] = { 50, 90, 94, 52 };/* RFCOMM, A2DP, HID, PAN */
+
+ stomp_txprio[ATH_BTCOEX_STOMP_LOW] =
+ stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 0xff;
+
+ if (mci->num_sco)
+ ath_mci_update_stomp_txprio(mci->voice_priority,
+ stomp_txprio);
+ if (mci->num_other_acl)
+ ath_mci_update_stomp_txprio(prof_prio[0], stomp_txprio);
+ if (mci->num_a2dp)
+ ath_mci_update_stomp_txprio(prof_prio[1], stomp_txprio);
+ if (mci->num_hid)
+ ath_mci_update_stomp_txprio(prof_prio[2], stomp_txprio);
+ if (mci->num_pan)
+ ath_mci_update_stomp_txprio(prof_prio[3], stomp_txprio);
+
+ if (stomp_txprio[ATH_BTCOEX_STOMP_NONE] == 0xff)
+ stomp_txprio[ATH_BTCOEX_STOMP_NONE] = 0;
+
+ if (stomp_txprio[ATH_BTCOEX_STOMP_LOW] == 0xff)
+ stomp_txprio[ATH_BTCOEX_STOMP_LOW] = 0;
+ }
+ ath9k_hw_btcoex_set_concur_txprio(sc->sc_ah, stomp_txprio);
+}
+
+static u8 ath_mci_process_profile(struct ath_softc *sc,
+ struct ath_mci_profile_info *info)
+{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_btcoex *btcoex = &sc->btcoex;
+ struct ath_mci_profile *mci = &btcoex->mci;
+ struct ath_mci_profile_info *entry = NULL;
+
+ entry = ath_mci_find_profile(mci, info);
+ if (entry) {
+ /*
+ * Two MCI interrupts are generated while connecting to
+ * headset and A2DP profile, but only one MCI interrupt
+ * is generated with last added profile type while disconnecting
+ * both profiles.
+ * So while adding second profile type decrement
+ * the first one.
+ */
+ if (entry->type != info->type) {
+ DEC_PROF(mci, entry);
+ INC_PROF(mci, info);
+ }
+ memcpy(entry, info, 10);
+ }
+
+ if (info->start) {
+ if (!entry && !ath_mci_add_profile(common, mci, info))
+ return 0;
+ } else
+ ath_mci_del_profile(common, mci, entry);
+
+ ath_mci_set_concur_txprio(sc);
+ return 1;
+}
+
+static u8 ath_mci_process_status(struct ath_softc *sc,
+ struct ath_mci_profile_status *status)
+{
+ struct ath_btcoex *btcoex = &sc->btcoex;
+ struct ath_mci_profile *mci = &btcoex->mci;
+ struct ath_mci_profile_info info;
+ int i = 0, old_num_mgmt = mci->num_mgmt;
+
+ /* Link status type are not handled */
+ if (status->is_link)
+ return 0;
+
+ info.conn_handle = status->conn_handle;
+ if (ath_mci_find_profile(mci, &info))
+ return 0;
+
+ if (status->conn_handle >= ATH_MCI_MAX_PROFILE)
+ return 0;
+
+ if (status->is_critical)
+ __set_bit(status->conn_handle, mci->status);
+ else
+ __clear_bit(status->conn_handle, mci->status);
+
+ mci->num_mgmt = 0;
+ do {
+ if (test_bit(i, mci->status))
+ mci->num_mgmt++;
+ } while (++i < ATH_MCI_MAX_PROFILE);
+
+ ath_mci_set_concur_txprio(sc);
+ if (old_num_mgmt != mci->num_mgmt)
+ return 1;
+
+ return 0;
+}
+
+static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_mci_profile_info profile_info;
+ struct ath_mci_profile_status profile_status;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ u8 major, minor, update_scheme = 0;
+ u32 seq_num;
+
+ if (ar9003_mci_state(ah, MCI_STATE_NEED_FLUSH_BT_INFO) &&
+ ar9003_mci_state(ah, MCI_STATE_ENABLE)) {
+ ath_dbg(common, MCI, "(MCI) Need to flush BT profiles\n");
+ ath_mci_flush_profile(&sc->btcoex.mci);
+ ar9003_mci_state(ah, MCI_STATE_SEND_STATUS_QUERY);
+ }
+
+ switch (opcode) {
+ case MCI_GPM_COEX_VERSION_QUERY:
+ ar9003_mci_state(ah, MCI_STATE_SEND_WLAN_COEX_VERSION);
+ break;
+ case MCI_GPM_COEX_VERSION_RESPONSE:
+ major = *(rx_payload + MCI_GPM_COEX_B_MAJOR_VERSION);
+ minor = *(rx_payload + MCI_GPM_COEX_B_MINOR_VERSION);
+ ar9003_mci_set_bt_version(ah, major, minor);
+ break;
+ case MCI_GPM_COEX_STATUS_QUERY:
+ ar9003_mci_send_wlan_channels(ah);
+ break;
+ case MCI_GPM_COEX_BT_PROFILE_INFO:
+ memcpy(&profile_info,
+ (rx_payload + MCI_GPM_COEX_B_PROFILE_TYPE), 10);
+
+ if ((profile_info.type == MCI_GPM_COEX_PROFILE_UNKNOWN) ||
+ (profile_info.type >= MCI_GPM_COEX_PROFILE_MAX)) {
+ ath_dbg(common, MCI,
+ "Illegal profile type = %d, state = %d\n",
+ profile_info.type,
+ profile_info.start);
+ break;
+ }
+
+ update_scheme += ath_mci_process_profile(sc, &profile_info);
+ break;
+ case MCI_GPM_COEX_BT_STATUS_UPDATE:
+ profile_status.is_link = *(rx_payload +
+ MCI_GPM_COEX_B_STATUS_TYPE);
+ profile_status.conn_handle = *(rx_payload +
+ MCI_GPM_COEX_B_STATUS_LINKID);
+ profile_status.is_critical = *(rx_payload +
+ MCI_GPM_COEX_B_STATUS_STATE);
+
+ seq_num = *((u32 *)(rx_payload + 12));
+ ath_dbg(common, MCI,
+ "BT_Status_Update: is_link=%d, linkId=%d, state=%d, SEQ=%u\n",
+ profile_status.is_link, profile_status.conn_handle,
+ profile_status.is_critical, seq_num);
+
+ update_scheme += ath_mci_process_status(sc, &profile_status);
+ break;
+ default:
+ ath_dbg(common, MCI, "Unknown GPM COEX message = 0x%02x\n", opcode);
+ break;
+ }
+ if (update_scheme)
+ ieee80211_queue_work(sc->hw, &sc->mci_work);
+}
+
+int ath_mci_setup(struct ath_softc *sc)
+{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_mci_coex *mci = &sc->mci_coex;
+ struct ath_mci_buf *buf = &mci->sched_buf;
+ int ret;
+
+ buf->bf_addr = dmam_alloc_coherent(sc->dev,
+ ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE,
+ &buf->bf_paddr, GFP_KERNEL);
+
+ if (buf->bf_addr == NULL) {
+ ath_dbg(common, FATAL, "MCI buffer alloc failed\n");
+ return -ENOMEM;
+ }
+
+ memset(buf->bf_addr, MCI_GPM_RSVD_PATTERN,
+ ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE);
+
+ mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE;
+
+ mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE;
+ mci->gpm_buf.bf_addr = (u8 *)mci->sched_buf.bf_addr + mci->sched_buf.bf_len;
+ mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len;
+
+ ret = ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr,
+ mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4),
+ mci->sched_buf.bf_paddr);
+ if (ret) {
+ ath_err(common, "Failed to initialize MCI\n");
+ return ret;
+ }
+
+ INIT_WORK(&sc->mci_work, ath9k_mci_work);
+ ath_dbg(common, MCI, "MCI Initialized\n");
+
+ return 0;
+}
+
+void ath_mci_cleanup(struct ath_softc *sc)
+{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_hw *ah = sc->sc_ah;
+
+ ar9003_mci_cleanup(ah);
+
+ ath_dbg(common, MCI, "MCI De-Initialized\n");
+}
+
+void ath_mci_intr(struct ath_softc *sc)
+{
+ struct ath_mci_coex *mci = &sc->mci_coex;
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
+ u32 mci_int, mci_int_rxmsg;
+ u32 offset, subtype, opcode;
+ u32 *pgpm;
+ u32 more_data = MCI_GPM_MORE;
+ bool skip_gpm = false;
+
+ ar9003_mci_get_interrupt(sc->sc_ah, &mci_int, &mci_int_rxmsg);
+
+ if (ar9003_mci_state(ah, MCI_STATE_ENABLE) == 0) {
+ ar9003_mci_state(ah, MCI_STATE_INIT_GPM_OFFSET);
+ return;
+ }
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE) {
+ u32 payload[4] = { 0xffffffff, 0xffffffff,
+ 0xffffffff, 0xffffff00};
+
+ /*
+ * The following REMOTE_RESET and SYS_WAKING used to sent
+ * only when BT wake up. Now they are always sent, as a
+ * recovery method to reset BT MCI's RX alignment.
+ */
+ ar9003_mci_send_message(ah, MCI_REMOTE_RESET, 0,
+ payload, 16, true, false);
+ ar9003_mci_send_message(ah, MCI_SYS_WAKING, 0,
+ NULL, 0, true, false);
+
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE;
+ ar9003_mci_state(ah, MCI_STATE_RESET_REQ_WAKE);
+
+ /*
+ * always do this for recovery and 2G/5G toggling and LNA_TRANS
+ */
+ ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE);
+ }
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING) {
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING;
+
+ if ((mci_hw->bt_state == MCI_BT_SLEEP) &&
+ (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) !=
+ MCI_BT_SLEEP))
+ ar9003_mci_state(ah, MCI_STATE_SET_BT_AWAKE);
+ }
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) {
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING;
+
+ if ((mci_hw->bt_state == MCI_BT_AWAKE) &&
+ (ar9003_mci_state(ah, MCI_STATE_REMOTE_SLEEP) !=
+ MCI_BT_AWAKE))
+ mci_hw->bt_state = MCI_BT_SLEEP;
+ }
+
+ if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) ||
+ (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) {
+ ar9003_mci_state(ah, MCI_STATE_RECOVER_RX);
+ skip_gpm = true;
+ }
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO) {
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_SCHD_INFO;
+ offset = ar9003_mci_state(ah, MCI_STATE_LAST_SCHD_MSG_OFFSET);
+ }
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_GPM) {
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_GPM;
+
+ while (more_data == MCI_GPM_MORE) {
+ if (test_bit(ATH_OP_HW_RESET, &common->op_flags))
+ return;
+
+ pgpm = mci->gpm_buf.bf_addr;
+ offset = ar9003_mci_get_next_gpm_offset(ah, &more_data);
+
+ if (offset == MCI_GPM_INVALID)
+ break;
+
+ pgpm += (offset >> 2);
+
+ /*
+ * The first dword is timer.
+ * The real data starts from 2nd dword.
+ */
+ subtype = MCI_GPM_TYPE(pgpm);
+ opcode = MCI_GPM_OPCODE(pgpm);
+
+ if (skip_gpm)
+ goto recycle;
+
+ if (MCI_GPM_IS_CAL_TYPE(subtype)) {
+ ath_mci_cal_msg(sc, subtype, (u8 *)pgpm);
+ } else {
+ switch (subtype) {
+ case MCI_GPM_COEX_AGENT:
+ ath_mci_msg(sc, opcode, (u8 *)pgpm);
+ break;
+ default:
+ break;
+ }
+ }
+ recycle:
+ MCI_GPM_RECYCLE(pgpm);
+ }
+ }
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_HW_MSG_MASK) {
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL)
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_CONTROL;
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_LNA_INFO)
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_LNA_INFO;
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_INFO) {
+ int value_dbm = MS(mci_hw->cont_status,
+ AR_MCI_CONT_RSSI_POWER);
+
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_INFO;
+
+ ath_dbg(common, MCI,
+ "MCI CONT_INFO: (%s) pri = %d pwr = %d dBm\n",
+ MS(mci_hw->cont_status, AR_MCI_CONT_TXRX) ?
+ "tx" : "rx",
+ MS(mci_hw->cont_status, AR_MCI_CONT_PRIORITY),
+ value_dbm);
+ }
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_NACK)
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_NACK;
+
+ if (mci_int_rxmsg & AR_MCI_INTERRUPT_RX_MSG_CONT_RST)
+ mci_int_rxmsg &= ~AR_MCI_INTERRUPT_RX_MSG_CONT_RST;
+ }
+
+ if ((mci_int & AR_MCI_INTERRUPT_RX_INVALID_HDR) ||
+ (mci_int & AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT)) {
+ mci_int &= ~(AR_MCI_INTERRUPT_RX_INVALID_HDR |
+ AR_MCI_INTERRUPT_CONT_INFO_TIMEOUT);
+ ath_mci_msg(sc, MCI_GPM_COEX_NOOP, NULL);
+ }
+}
+
+void ath_mci_enable(struct ath_softc *sc)
+{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+
+ if (!common->btcoex_enabled)
+ return;
+
+ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
+ sc->sc_ah->imask |= ATH9K_INT_MCI;
+}
+
+void ath9k_mci_update_wlan_channels(struct ath_softc *sc, bool allow_all)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
+ struct ath9k_channel *chan = ah->curchan;
+ u32 channelmap[] = {0x00000000, 0xffff0000, 0xffffffff, 0x7fffffff};
+ int i;
+ s16 chan_start, chan_end;
+ u16 wlan_chan;
+
+ if (!chan || !IS_CHAN_2GHZ(chan))
+ return;
+
+ if (allow_all)
+ goto send_wlan_chan;
+
+ wlan_chan = chan->channel - 2402;
+
+ chan_start = wlan_chan - 10;
+ chan_end = wlan_chan + 10;
+
+ if (IS_CHAN_HT40PLUS(chan))
+ chan_end += 20;
+ else if (IS_CHAN_HT40MINUS(chan))
+ chan_start -= 20;
+
+ /* adjust side band */
+ chan_start -= 7;
+ chan_end += 7;
+
+ if (chan_start <= 0)
+ chan_start = 0;
+ if (chan_end >= ATH_MCI_NUM_BT_CHANNELS)
+ chan_end = ATH_MCI_NUM_BT_CHANNELS - 1;
+
+ ath_dbg(ath9k_hw_common(ah), MCI,
+ "WLAN current channel %d mask BT channel %d - %d\n",
+ wlan_chan, chan_start, chan_end);
+
+ for (i = chan_start; i < chan_end; i++)
+ MCI_GPM_CLR_CHANNEL_BIT(&channelmap, i);
+
+send_wlan_chan:
+ /* update and send wlan channels info to BT */
+ for (i = 0; i < 4; i++)
+ mci->wlan_channels[i] = channelmap[i];
+ ar9003_mci_send_wlan_channels(ah);
+ ar9003_mci_state(ah, MCI_STATE_SEND_VERSION_QUERY);
+}
+
+void ath9k_mci_set_txpower(struct ath_softc *sc, bool setchannel,
+ bool concur_tx)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;
+ bool old_concur_tx = mci_hw->concur_tx;
+
+ if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX)) {
+ mci_hw->concur_tx = false;
+ return;
+ }
+
+ if (!IS_CHAN_2GHZ(ah->curchan))
+ return;
+
+ if (setchannel) {
+ struct ath9k_hw_cal_data *caldata = &sc->cur_chan->caldata;
+ if (IS_CHAN_HT40PLUS(ah->curchan) &&
+ (ah->curchan->channel > caldata->channel) &&
+ (ah->curchan->channel <= caldata->channel + 20))
+ return;
+ if (IS_CHAN_HT40MINUS(ah->curchan) &&
+ (ah->curchan->channel < caldata->channel) &&
+ (ah->curchan->channel >= caldata->channel - 20))
+ return;
+ mci_hw->concur_tx = false;
+ } else
+ mci_hw->concur_tx = concur_tx;
+
+ if (old_concur_tx != mci_hw->concur_tx)
+ ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);
+}
+
+static void ath9k_mci_stomp_audio(struct ath_softc *sc)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_btcoex *btcoex = &sc->btcoex;
+ struct ath_mci_profile *mci = &btcoex->mci;
+
+ if (!mci->num_sco && !mci->num_a2dp)
+ return;
+
+ if (ah->stats.avgbrssi > 25) {
+ btcoex->stomp_audio = 0;
+ return;
+ }
+
+ btcoex->stomp_audio++;
+}
+void ath9k_mci_update_rssi(struct ath_softc *sc)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_btcoex *btcoex = &sc->btcoex;
+ struct ath9k_hw_mci *mci_hw = &sc->sc_ah->btcoex_hw.mci;
+
+ ath9k_mci_stomp_audio(sc);
+
+ if (!(mci_hw->config & ATH_MCI_CONFIG_CONCUR_TX))
+ return;
+
+ if (ah->stats.avgbrssi >= 40) {
+ if (btcoex->rssi_count < 0)
+ btcoex->rssi_count = 0;
+ if (++btcoex->rssi_count >= ATH_MCI_CONCUR_TX_SWITCH) {
+ btcoex->rssi_count = 0;
+ ath9k_mci_set_txpower(sc, false, true);
+ }
+ } else {
+ if (btcoex->rssi_count > 0)
+ btcoex->rssi_count = 0;
+ if (--btcoex->rssi_count <= -ATH_MCI_CONCUR_TX_SWITCH) {
+ btcoex->rssi_count = 0;
+ ath9k_mci_set_txpower(sc, false, false);
+ }
+ }
+}
Code Review / kvmfornfv.git / blobdiff