xref: /linux/drivers/net/wireless/rsi/rsi_common.h (revision 00a6d7b6762c27d441e9ac8faff36384bc0fc180)
1 /**
2  * Copyright (c) 2014 Redpine Signals Inc.
3  *
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.
7  *
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.
15  */
16 
17 #ifndef __RSI_COMMON_H__
18 #define __RSI_COMMON_H__
19 
20 #include <linux/kthread.h>
21 
22 #define EVENT_WAIT_FOREVER              0
23 #define TA_LOAD_ADDRESS                 0x00
24 #define FIRMWARE_RSI9113                "rsi_91x.fw"
25 #define QUEUE_NOT_FULL                  1
26 #define QUEUE_FULL                      0
27 
28 static inline int rsi_init_event(struct rsi_event *pevent)
29 {
30 	atomic_set(&pevent->event_condition, 1);
31 	init_waitqueue_head(&pevent->event_queue);
32 	return 0;
33 }
34 
35 static inline int rsi_wait_event(struct rsi_event *event, u32 timeout)
36 {
37 	int status = 0;
38 
39 	if (!timeout)
40 		status = wait_event_interruptible(event->event_queue,
41 				(atomic_read(&event->event_condition) == 0));
42 	else
43 		status = wait_event_interruptible_timeout(event->event_queue,
44 				(atomic_read(&event->event_condition) == 0),
45 				timeout);
46 	return status;
47 }
48 
49 static inline void rsi_set_event(struct rsi_event *event)
50 {
51 	atomic_set(&event->event_condition, 0);
52 	wake_up_interruptible(&event->event_queue);
53 }
54 
55 static inline void rsi_reset_event(struct rsi_event *event)
56 {
57 	atomic_set(&event->event_condition, 1);
58 }
59 
60 static inline int rsi_create_kthread(struct rsi_common *common,
61 				     struct rsi_thread *thread,
62 				     void *func_ptr,
63 				     u8 *name)
64 {
65 	init_completion(&thread->completion);
66 	thread->task = kthread_run(func_ptr, common, name);
67 	if (IS_ERR(thread->task))
68 		return (int)PTR_ERR(thread->task);
69 
70 	return 0;
71 }
72 
73 static inline int rsi_kill_thread(struct rsi_thread *handle)
74 {
75 	atomic_inc(&handle->thread_done);
76 	rsi_set_event(&handle->event);
77 
78 	wait_for_completion(&handle->completion);
79 	return kthread_stop(handle->task);
80 }
81 
82 void rsi_mac80211_detach(struct rsi_hw *hw);
83 u16 rsi_get_connected_channel(struct rsi_hw *adapter);
84 struct rsi_hw *rsi_91x_init(void);
85 void rsi_91x_deinit(struct rsi_hw *adapter);
86 int rsi_read_pkt(struct rsi_common *common, s32 rcv_pkt_len);
87 #endif
88