diff options
Diffstat (limited to 'drivers/net/wireless/rsi/rsi_91x_coex.c')
| -rw-r--r-- | drivers/net/wireless/rsi/rsi_91x_coex.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/net/wireless/rsi/rsi_91x_coex.c b/drivers/net/wireless/rsi/rsi_91x_coex.c new file mode 100644 index 000000000000..d055099dadf1 --- /dev/null +++ b/drivers/net/wireless/rsi/rsi_91x_coex.c @@ -0,0 +1,179 @@ +/** + * Copyright (c) 2018 Redpine Signals 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 "rsi_main.h" +#include "rsi_coex.h" +#include "rsi_mgmt.h" +#include "rsi_hal.h" + +static enum rsi_coex_queues rsi_coex_determine_coex_q + (struct rsi_coex_ctrl_block *coex_cb) +{ + enum rsi_coex_queues q_num = RSI_COEX_Q_INVALID; + + if (skb_queue_len(&coex_cb->coex_tx_qs[RSI_COEX_Q_COMMON]) > 0) + q_num = RSI_COEX_Q_COMMON; + if (skb_queue_len(&coex_cb->coex_tx_qs[RSI_COEX_Q_BT]) > 0) + q_num = RSI_COEX_Q_BT; + if (skb_queue_len(&coex_cb->coex_tx_qs[RSI_COEX_Q_WLAN]) > 0) + q_num = RSI_COEX_Q_WLAN; + + return q_num; +} + +static void rsi_coex_sched_tx_pkts(struct rsi_coex_ctrl_block *coex_cb) +{ + enum rsi_coex_queues coex_q = RSI_COEX_Q_INVALID; + struct sk_buff *skb; + + do { + coex_q = rsi_coex_determine_coex_q(coex_cb); + rsi_dbg(INFO_ZONE, "queue = %d\n", coex_q); + + if (coex_q == RSI_COEX_Q_BT) { + skb = skb_dequeue(&coex_cb->coex_tx_qs[RSI_COEX_Q_BT]); + rsi_send_bt_pkt(coex_cb->priv, skb); + } + } while (coex_q != RSI_COEX_Q_INVALID); +} + +static void rsi_coex_scheduler_thread(struct rsi_common *common) +{ + struct rsi_coex_ctrl_block *coex_cb = + (struct rsi_coex_ctrl_block *)common->coex_cb; + u32 timeout = EVENT_WAIT_FOREVER; + + do { + rsi_wait_event(&coex_cb->coex_tx_thread.event, timeout); + rsi_reset_event(&coex_cb->coex_tx_thread.event); + + rsi_coex_sched_tx_pkts(coex_cb); + } while (atomic_read(&coex_cb->coex_tx_thread.thread_done) == 0); + + complete_and_exit(&coex_cb->coex_tx_thread.completion, 0); +} + +int rsi_coex_recv_pkt(struct rsi_common *common, u8 *msg) +{ + u8 msg_type = msg[RSI_RX_DESC_MSG_TYPE_OFFSET]; + + switch (msg_type) { + case COMMON_CARD_READY_IND: + rsi_dbg(INFO_ZONE, "common card ready received\n"); + rsi_handle_card_ready(common, msg); + break; + case SLEEP_NOTIFY_IND: + rsi_dbg(INFO_ZONE, "sleep notify received\n"); + rsi_mgmt_pkt_recv(common, msg); + break; + } + + return 0; +} + +static inline int rsi_map_coex_q(u8 hal_queue) +{ + switch (hal_queue) { + case RSI_COEX_Q: + return RSI_COEX_Q_COMMON; + case RSI_WLAN_Q: + return RSI_COEX_Q_WLAN; + case RSI_BT_Q: + return RSI_COEX_Q_BT; + } + return RSI_COEX_Q_INVALID; +} + +int rsi_coex_send_pkt(void *priv, struct sk_buff *skb, u8 hal_queue) +{ + struct rsi_common *common = (struct rsi_common *)priv; + struct rsi_coex_ctrl_block *coex_cb = + (struct rsi_coex_ctrl_block *)common->coex_cb; + struct skb_info *tx_params = NULL; + enum rsi_coex_queues coex_q; + int status; + + coex_q = rsi_map_coex_q(hal_queue); + if (coex_q == RSI_COEX_Q_INVALID) { + rsi_dbg(ERR_ZONE, "Invalid coex queue\n"); + return -EINVAL; + } + if (coex_q != RSI_COEX_Q_COMMON && + coex_q != RSI_COEX_Q_WLAN) { + skb_queue_tail(&coex_cb->coex_tx_qs[coex_q], skb); + rsi_set_event(&coex_cb->coex_tx_thread.event); + return 0; + } + if (common->iface_down) { + tx_params = + (struct skb_info *)&IEEE80211_SKB_CB(skb)->driver_data; + + if (!(tx_params->flags & INTERNAL_MGMT_PKT)) { + rsi_indicate_tx_status(common->priv, skb, -EINVAL); + return 0; + } + } + + /* Send packet to hal */ + if (skb->priority == MGMT_SOFT_Q) + status = rsi_send_mgmt_pkt(common, skb); + else + status = rsi_send_data_pkt(common, skb); + + return status; +} + +int rsi_coex_attach(struct rsi_common *common) +{ + struct rsi_coex_ctrl_block *coex_cb; + int cnt; + + coex_cb = kzalloc(sizeof(*coex_cb), GFP_KERNEL); + if (!coex_cb) + return -ENOMEM; + + common->coex_cb = (void *)coex_cb; + coex_cb->priv = common; + + /* Initialize co-ex queues */ + for (cnt = 0; cnt < NUM_COEX_TX_QUEUES; cnt++) + skb_queue_head_init(&coex_cb->coex_tx_qs[cnt]); + rsi_init_event(&coex_cb->coex_tx_thread.event); + + /* Initialize co-ex thread */ + if (rsi_create_kthread(common, + &coex_cb->coex_tx_thread, + rsi_coex_scheduler_thread, + "Coex-Tx-Thread")) { + rsi_dbg(ERR_ZONE, "%s: Unable to init tx thrd\n", __func__); + return -EINVAL; + } + return 0; +} + +void rsi_coex_detach(struct rsi_common *common) +{ + struct rsi_coex_ctrl_block *coex_cb = + (struct rsi_coex_ctrl_block *)common->coex_cb; + int cnt; + + rsi_kill_thread(&coex_cb->coex_tx_thread); + + for (cnt = 0; cnt < NUM_COEX_TX_QUEUES; cnt++) + skb_queue_purge(&coex_cb->coex_tx_qs[cnt]); + + kfree(coex_cb); +} |