2 * Copyright (c) 2018 Redpine Signals 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.
22 static enum rsi_coex_queues rsi_coex_determine_coex_q
23 (struct rsi_coex_ctrl_block *coex_cb)
25 enum rsi_coex_queues q_num = RSI_COEX_Q_INVALID;
27 if (skb_queue_len(&coex_cb->coex_tx_qs[RSI_COEX_Q_COMMON]) > 0)
28 q_num = RSI_COEX_Q_COMMON;
29 if (skb_queue_len(&coex_cb->coex_tx_qs[RSI_COEX_Q_BT]) > 0)
30 q_num = RSI_COEX_Q_BT;
31 if (skb_queue_len(&coex_cb->coex_tx_qs[RSI_COEX_Q_WLAN]) > 0)
32 q_num = RSI_COEX_Q_WLAN;
37 static void rsi_coex_sched_tx_pkts(struct rsi_coex_ctrl_block *coex_cb)
39 enum rsi_coex_queues coex_q = RSI_COEX_Q_INVALID;
43 coex_q = rsi_coex_determine_coex_q(coex_cb);
44 rsi_dbg(INFO_ZONE, "queue = %d\n", coex_q);
46 if (coex_q == RSI_COEX_Q_BT) {
47 skb = skb_dequeue(&coex_cb->coex_tx_qs[RSI_COEX_Q_BT]);
48 rsi_send_bt_pkt(coex_cb->priv, skb);
50 } while (coex_q != RSI_COEX_Q_INVALID);
53 static void rsi_coex_scheduler_thread(struct rsi_common *common)
55 struct rsi_coex_ctrl_block *coex_cb = common->coex_cb;
56 u32 timeout = EVENT_WAIT_FOREVER;
59 rsi_wait_event(&coex_cb->coex_tx_thread.event, timeout);
60 rsi_reset_event(&coex_cb->coex_tx_thread.event);
62 rsi_coex_sched_tx_pkts(coex_cb);
63 } while (atomic_read(&coex_cb->coex_tx_thread.thread_done) == 0);
65 kthread_complete_and_exit(&coex_cb->coex_tx_thread.completion, 0);
68 int rsi_coex_recv_pkt(struct rsi_common *common, u8 *msg)
70 u8 msg_type = msg[RSI_RX_DESC_MSG_TYPE_OFFSET];
73 case COMMON_CARD_READY_IND:
74 rsi_dbg(INFO_ZONE, "common card ready received\n");
75 common->hibernate_resume = false;
76 rsi_handle_card_ready(common, msg);
78 case SLEEP_NOTIFY_IND:
79 rsi_dbg(INFO_ZONE, "sleep notify received\n");
80 rsi_mgmt_pkt_recv(common, msg);
87 static inline int rsi_map_coex_q(u8 hal_queue)
91 return RSI_COEX_Q_COMMON;
93 return RSI_COEX_Q_WLAN;
97 return RSI_COEX_Q_INVALID;
100 int rsi_coex_send_pkt(void *priv, struct sk_buff *skb, u8 hal_queue)
102 struct rsi_common *common = priv;
103 struct rsi_coex_ctrl_block *coex_cb = common->coex_cb;
104 struct skb_info *tx_params = NULL;
105 enum rsi_coex_queues coex_q;
108 coex_q = rsi_map_coex_q(hal_queue);
109 if (coex_q == RSI_COEX_Q_INVALID) {
110 rsi_dbg(ERR_ZONE, "Invalid coex queue\n");
113 if (coex_q != RSI_COEX_Q_COMMON &&
114 coex_q != RSI_COEX_Q_WLAN) {
115 skb_queue_tail(&coex_cb->coex_tx_qs[coex_q], skb);
116 rsi_set_event(&coex_cb->coex_tx_thread.event);
119 if (common->iface_down) {
121 (struct skb_info *)&IEEE80211_SKB_CB(skb)->driver_data;
123 if (!(tx_params->flags & INTERNAL_MGMT_PKT)) {
124 rsi_indicate_tx_status(common->priv, skb, -EINVAL);
129 /* Send packet to hal */
130 if (skb->priority == MGMT_SOFT_Q)
131 status = rsi_send_mgmt_pkt(common, skb);
133 status = rsi_send_data_pkt(common, skb);
138 int rsi_coex_attach(struct rsi_common *common)
140 struct rsi_coex_ctrl_block *coex_cb;
143 coex_cb = kzalloc(sizeof(*coex_cb), GFP_KERNEL);
147 common->coex_cb = (void *)coex_cb;
148 coex_cb->priv = common;
150 /* Initialize co-ex queues */
151 for (cnt = 0; cnt < NUM_COEX_TX_QUEUES; cnt++)
152 skb_queue_head_init(&coex_cb->coex_tx_qs[cnt]);
153 rsi_init_event(&coex_cb->coex_tx_thread.event);
155 /* Initialize co-ex thread */
156 if (rsi_create_kthread(common,
157 &coex_cb->coex_tx_thread,
158 rsi_coex_scheduler_thread,
160 rsi_dbg(ERR_ZONE, "%s: Unable to init tx thrd\n", __func__);
167 void rsi_coex_detach(struct rsi_common *common)
169 struct rsi_coex_ctrl_block *coex_cb = common->coex_cb;
172 rsi_kill_thread(&coex_cb->coex_tx_thread);
174 for (cnt = 0; cnt < NUM_COEX_TX_QUEUES; cnt++)
175 skb_queue_purge(&coex_cb->coex_tx_qs[cnt]);