drivers/net/wireless/rsi/rsi_91x_coex.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/rsi/rsi_91x_coex.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/rsi/rsi_91x_coex.c
Extension
.c
Size
4786 bytes
Lines
179
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

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 = 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);

	kthread_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");
		common->hibernate_resume = false;
		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 = priv;
	struct rsi_coex_ctrl_block *coex_cb = 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;

Annotation

Implementation Notes