10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
24  * rsi_sdio_master_access_msword() - This function sets the AHB master access
25  *				     MS word in the SDIO slave registers.
29  * Return: status: 0 on success, -1 on failure.
50 		return -1;  in rsi_sdio_master_access_msword()
65 	struct rsi_hw *adapter = common->priv;  in rsi_sdio_rx_thread()
66 	struct rsi_91x_sdiodev *sdev = adapter->rsi_dev;  in rsi_sdio_rx_thread()
71 		rsi_wait_event(&sdev->rx_thread.event, EVENT_WAIT_FOREVER);  in rsi_sdio_rx_thread()
72 		rsi_reset_event(&sdev->rx_thread.event);  in rsi_sdio_rx_thread()
75 			if (atomic_read(&sdev->rx_thread.thread_done))  in rsi_sdio_rx_thread()
78 			skb = skb_dequeue(&sdev->rx_q.head);  in rsi_sdio_rx_thread()
81 			if (sdev->rx_q.num_rx_pkts > 0)  in rsi_sdio_rx_thread()
82 				sdev->rx_q.num_rx_pkts--;  in rsi_sdio_rx_thread()
83 			status = rsi_read_pkt(common, skb->data, skb->len);  in rsi_sdio_rx_thread()
94 	rsi_dbg(INFO_ZONE, "%s: Terminated SDIO RX thread\n", __func__);  in rsi_sdio_rx_thread()
95 	skb_queue_purge(&sdev->rx_q.head);  in rsi_sdio_rx_thread()
96 	atomic_inc(&sdev->rx_thread.thread_done);  in rsi_sdio_rx_thread()
97 	complete_and_exit(&sdev->rx_thread.completion, 0);  in rsi_sdio_rx_thread()
101  * rsi_process_pkt() - This Function reads rx_blocks register and figures out
105  * Return: 0 on success, -1 on failure.
109 	struct rsi_hw *adapter = common->priv;  in rsi_process_pkt()
111 		(struct rsi_91x_sdiodev *)adapter->rsi_dev;  in rsi_process_pkt()
118 	if (dev->rx_q.num_rx_pkts >= RSI_MAX_RX_PKTS)  in rsi_process_pkt()
121 	num_blks = ((adapter->interrupt_status & 1) |  in rsi_process_pkt()
122 			((adapter->interrupt_status >> RECV_NUM_BLOCKS) << 1));  in rsi_process_pkt()
137 	if (dev->write_fail == 2)  in rsi_process_pkt()
138 		rsi_sdio_ack_intr(common->priv, (1 << MSDU_PKT_PENDING));  in rsi_process_pkt()
141 		dev->write_fail = 2;  in rsi_process_pkt()
142 		return -1;  in rsi_process_pkt()
149 		return -ENOMEM;  in rsi_process_pkt()
151 	status = rsi_sdio_host_intf_read_pkt(adapter, skb->data, rcv_pkt_len);  in rsi_process_pkt()
159 	skb_queue_tail(&dev->rx_q.head, skb);  in rsi_process_pkt()
160 	dev->rx_q.num_rx_pkts++;  in rsi_process_pkt()
162 	rsi_set_event(&dev->rx_thread.event);  in rsi_process_pkt()
168  * rsi_init_sdio_slave_regs() - This function does the actual initialization
172  * Return: status: 0 on success, -1 on failure.
177 		(struct rsi_91x_sdiodev *)adapter->rsi_dev;  in rsi_init_sdio_slave_regs()
182 	if (dev->next_read_delay) {  in rsi_init_sdio_slave_regs()
183 		byte = dev->next_read_delay;  in rsi_init_sdio_slave_regs()
192 			return -1;  in rsi_init_sdio_slave_regs()
196 	if (dev->sdio_high_speed_enable) {  in rsi_init_sdio_slave_regs()
197 		rsi_dbg(INIT_ZONE, "%s: Enabling SDIO High speed\n", __func__);  in rsi_init_sdio_slave_regs()
206 				"%s: Failed to enable SDIO high speed\n",  in rsi_init_sdio_slave_regs()
208 			return -1;  in rsi_init_sdio_slave_regs()
212 	/* This tells SDIO FIFO when to start read to host */  in rsi_init_sdio_slave_regs()
213 	rsi_dbg(INIT_ZONE, "%s: Initializing SDIO read start level\n", __func__);  in rsi_init_sdio_slave_regs()
223 		return -1;  in rsi_init_sdio_slave_regs()
227 	byte = (128 - 32);  in rsi_init_sdio_slave_regs()
236 		return -1;  in rsi_init_sdio_slave_regs()
247 		return -1;  in rsi_init_sdio_slave_regs()
254  * rsi_interrupt_handler() - This function read and process SDIO interrupts.
261 	struct rsi_common *common = adapter->priv;  in rsi_interrupt_handler()
263 		(struct rsi_91x_sdiodev *)adapter->rsi_dev;  in rsi_interrupt_handler()
269 	dev->rx_info.sdio_int_counter++;  in rsi_interrupt_handler()
272 		mutex_lock(&common->rx_lock);  in rsi_interrupt_handler()
273 		status = rsi_sdio_read_register(common->priv,  in rsi_interrupt_handler()
280 			mutex_unlock(&common->rx_lock);  in rsi_interrupt_handler()
283 		adapter->interrupt_status = isr_status;  in rsi_interrupt_handler()
286 			rsi_set_event(&common->tx_thread.event);  in rsi_interrupt_handler()
287 			dev->rx_info.sdio_intr_status_zero++;  in rsi_interrupt_handler()
288 			mutex_unlock(&common->rx_lock);  in rsi_interrupt_handler()
307 				rsi_sdio_ack_intr(common->priv,  in rsi_interrupt_handler()
309 				rsi_set_event(&common->tx_thread.event);  in rsi_interrupt_handler()
314 				dev->buff_status_updated = true;  in rsi_interrupt_handler()
321 				status = rsi_sdio_read_register(common->priv,  in rsi_interrupt_handler()
332 					rsi_sdio_ack_intr(common->priv,  in rsi_interrupt_handler()
336 				common->fsm_state = FSM_CARD_NOT_READY;  in rsi_interrupt_handler()
341 				dev->rx_info.total_sdio_msdu_pending_intr++;  in rsi_interrupt_handler()
348 					mutex_unlock(&common->rx_lock);  in rsi_interrupt_handler()
353 				rsi_sdio_ack_intr(common->priv, isr_status);  in rsi_interrupt_handler()
354 				dev->rx_info.total_sdio_unknown_intr++;  in rsi_interrupt_handler()
361 			isr_status ^= BIT(isr_type - 1);  in rsi_interrupt_handler()
363 		mutex_unlock(&common->rx_lock);  in rsi_interrupt_handler()
372 	struct rsi_common *common = adapter->priv;  in rsi_sdio_check_buffer_status()
374 		(struct rsi_91x_sdiodev *)adapter->rsi_dev;  in rsi_sdio_check_buffer_status()
379 	if (!dev->buff_status_updated && counter) {  in rsi_sdio_check_buffer_status()
380 		counter--;  in rsi_sdio_check_buffer_status()
384 	dev->buff_status_updated = false;  in rsi_sdio_check_buffer_status()
385 	status = rsi_sdio_read_register(common->priv,  in rsi_sdio_check_buffer_status()
392 		return -1;  in rsi_sdio_check_buffer_status()
396 		if (!dev->rx_info.mgmt_buffer_full)  in rsi_sdio_check_buffer_status()
397 			dev->rx_info.mgmt_buf_full_counter++;  in rsi_sdio_check_buffer_status()
398 		dev->rx_info.mgmt_buffer_full = true;  in rsi_sdio_check_buffer_status()
400 		dev->rx_info.mgmt_buffer_full = false;  in rsi_sdio_check_buffer_status()
404 		if (!dev->rx_info.buffer_full)  in rsi_sdio_check_buffer_status()
405 			dev->rx_info.buf_full_counter++;  in rsi_sdio_check_buffer_status()
406 		dev->rx_info.buffer_full = true;  in rsi_sdio_check_buffer_status()
408 		dev->rx_info.buffer_full = false;  in rsi_sdio_check_buffer_status()
412 		if (!dev->rx_info.semi_buffer_full)  in rsi_sdio_check_buffer_status()
413 			dev->rx_info.buf_semi_full_counter++;  in rsi_sdio_check_buffer_status()
414 		dev->rx_info.semi_buffer_full = true;  in rsi_sdio_check_buffer_status()
416 		dev->rx_info.semi_buffer_full = false;  in rsi_sdio_check_buffer_status()
419 	if (dev->rx_info.mgmt_buffer_full || dev->rx_info.buf_full_counter)  in rsi_sdio_check_buffer_status()
425 	if ((q_num == MGMT_SOFT_Q) && (dev->rx_info.mgmt_buffer_full))  in rsi_sdio_check_buffer_status()
428 	if ((q_num < MGMT_SOFT_Q) && (dev->rx_info.buffer_full))  in rsi_sdio_check_buffer_status()
435  * rsi_sdio_determine_event_timeout() - This Function determines the event
444 		(struct rsi_91x_sdiodev *)adapter->rsi_dev;  in rsi_sdio_determine_event_timeout()
447 	if (dev->rx_info.buffer_full)  in rsi_sdio_determine_event_timeout()